parse.y revision 1.666 
1/*	$OpenBSD: parse.y,v 1.666 2017/11/25 22:26:25 sashan 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 - 2013 Henning Brauer <henning@openbsd.org>
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/ip.h>
36#include <netinet/ip_icmp.h>
37#include <netinet/icmp6.h>
38#include <net/pfvar.h>
39#include <arpa/inet.h>
40
41#include <stdio.h>
42#include <unistd.h>
43#include <stdlib.h>
44#include <netdb.h>
45#include <stdarg.h>
46#include <errno.h>
47#include <string.h>
48#include <ctype.h>
49#include <math.h>
50#include <err.h>
51#include <limits.h>
52#include <pwd.h>
53#include <grp.h>
54#include <md5.h>
55
56#include "pfctl_parser.h"
57#include "pfctl.h"
58
59static struct pfctl	*pf = NULL;
60static int		 debug = 0;
61static u_int16_t	 returnicmpdefault =
62			    (ICMP_UNREACH << 8) | ICMP_UNREACH_PORT;
63static u_int16_t	 returnicmp6default =
64			    (ICMP6_DST_UNREACH << 8) | ICMP6_DST_UNREACH_NOPORT;
65static int		 blockpolicy = PFRULE_DROP;
66static int		 default_statelock;
67
68TAILQ_HEAD(files, file)		 files = TAILQ_HEAD_INITIALIZER(files);
69static struct file {
70	TAILQ_ENTRY(file)	 entry;
71	FILE			*stream;
72	char			*name;
73	int			 lineno;
74	int			 errors;
75} *file;
76struct file	*pushfile(const char *, int);
77int		 popfile(void);
78int		 check_file_secrecy(int, const char *);
79int		 yyparse(void);
80int		 yylex(void);
81int		 yyerror(const char *, ...);
82int		 kw_cmp(const void *, const void *);
83int		 lookup(char *);
84int		 lgetc(int);
85int		 lungetc(int);
86int		 findeol(void);
87
88TAILQ_HEAD(symhead, sym)	 symhead = TAILQ_HEAD_INITIALIZER(symhead);
89struct sym {
90	TAILQ_ENTRY(sym)	 entry;
91	int			 used;
92	int			 persist;
93	char			*nam;
94	char			*val;
95};
96int		 symset(const char *, const char *, int);
97char		*symget(const char *);
98
99int		 atoul(char *, u_long *);
100
101struct node_proto {
102	u_int8_t		 proto;
103	struct node_proto	*next;
104	struct node_proto	*tail;
105};
106
107struct node_port {
108	u_int16_t		 port[2];
109	u_int8_t		 op;
110	struct node_port	*next;
111	struct node_port	*tail;
112};
113
114struct node_uid {
115	uid_t			 uid[2];
116	u_int8_t		 op;
117	struct node_uid		*next;
118	struct node_uid		*tail;
119};
120
121struct node_gid {
122	gid_t			 gid[2];
123	u_int8_t		 op;
124	struct node_gid		*next;
125	struct node_gid		*tail;
126};
127
128struct node_icmp {
129	u_int8_t		 code;
130	u_int8_t		 type;
131	u_int8_t		 proto;
132	struct node_icmp	*next;
133	struct node_icmp	*tail;
134};
135
136enum	{ PF_STATE_OPT_MAX, PF_STATE_OPT_NOSYNC, PF_STATE_OPT_SRCTRACK,
137	    PF_STATE_OPT_MAX_SRC_STATES, PF_STATE_OPT_MAX_SRC_CONN,
138	    PF_STATE_OPT_MAX_SRC_CONN_RATE, PF_STATE_OPT_MAX_SRC_NODES,
139	    PF_STATE_OPT_OVERLOAD, PF_STATE_OPT_STATELOCK,
140	    PF_STATE_OPT_TIMEOUT, PF_STATE_OPT_SLOPPY,
141	    PF_STATE_OPT_PFLOW };
142
143enum	{ PF_SRCTRACK_NONE, PF_SRCTRACK, PF_SRCTRACK_GLOBAL, PF_SRCTRACK_RULE };
144
145struct node_state_opt {
146	int			 type;
147	union {
148		u_int32_t	 max_states;
149		u_int32_t	 max_src_states;
150		u_int32_t	 max_src_conn;
151		struct {
152			u_int32_t	limit;
153			u_int32_t	seconds;
154		}		 max_src_conn_rate;
155		struct {
156			u_int8_t	flush;
157			char		tblname[PF_TABLE_NAME_SIZE];
158		}		 overload;
159		u_int32_t	 max_src_nodes;
160		u_int8_t	 src_track;
161		u_int32_t	 statelock;
162		struct {
163			int		number;
164			u_int32_t	seconds;
165		}		 timeout;
166	}			 data;
167	struct node_state_opt	*next;
168	struct node_state_opt	*tail;
169};
170
171struct peer {
172	struct node_host	*host;
173	struct node_port	*port;
174};
175
176struct node_queue {
177	char			 queue[PF_QNAME_SIZE];
178	char			 parent[PF_QNAME_SIZE];
179	char			 ifname[IFNAMSIZ];
180	int			 scheduler;
181	struct node_queue	*next;
182	struct node_queue	*tail;
183};
184
185struct node_qassign {
186	char		*qname;
187	char		*pqname;
188};
189
190struct range {
191	int		 a;
192	int		 b;
193	int		 t;
194};
195struct redirection {
196	struct node_host	*host;
197	struct range		 rport;
198};
199
200struct pool_opts {
201	int			 marker;
202#define POM_TYPE		0x01
203#define POM_STICKYADDRESS	0x02
204	u_int8_t		 opts;
205	int			 type;
206	int			 staticport;
207	struct pf_poolhashkey	*key;
208
209} pool_opts;
210
211struct divertspec {
212	struct node_host	*addr;
213	u_int16_t		 port;
214};
215
216struct redirspec {
217	struct redirection      *rdr;
218	struct pool_opts         pool_opts;
219	int			 binat;
220	int			 af;
221};
222
223struct filter_opts {
224	int			 marker;
225#define FOM_FLAGS	0x0001
226#define FOM_ICMP	0x0002
227#define FOM_TOS		0x0004
228#define FOM_KEEP	0x0008
229#define FOM_SRCTRACK	0x0010
230#define FOM_MINTTL	0x0020
231#define FOM_MAXMSS	0x0040
232#define FOM_AFTO	0x0080
233#define FOM_SETTOS	0x0100
234#define FOM_SCRUB_TCP	0x0200
235#define FOM_SETPRIO	0x0400
236#define FOM_ONCE	0x1000
237#define FOM_PRIO	0x2000
238	struct node_uid		*uid;
239	struct node_gid		*gid;
240	struct node_if		*rcv;
241	struct {
242		u_int8_t	 b1;
243		u_int8_t	 b2;
244		u_int16_t	 w;
245		u_int16_t	 w2;
246	} flags;
247	struct node_icmp	*icmpspec;
248	u_int32_t		 tos;
249	u_int32_t		 prob;
250	struct {
251		int			 action;
252		struct node_state_opt	*options;
253	} keep;
254	int			 fragment;
255	int			 allowopts;
256	char			*label;
257	struct node_qassign	 queues;
258	char			*tag;
259	char			*match_tag;
260	u_int8_t		 match_tag_not;
261	u_int			 rtableid;
262	u_int8_t		 prio;
263	u_int8_t		 set_prio[2];
264	struct divertspec	 divert;
265	struct divertspec	 divert_packet;
266	struct redirspec	 nat;
267	struct redirspec	 rdr;
268	struct redirspec	 rroute;
269
270	/* scrub opts */
271	int			 nodf;
272	int			 minttl;
273	int			 settos;
274	int			 randomid;
275	int			 max_mss;
276
277	/* route opts */
278	struct {
279		struct node_host	*host;
280		u_int8_t		 rt;
281		u_int8_t		 pool_opts;
282		sa_family_t		 af;
283		struct pf_poolhashkey	*key;
284	}			 route;
285
286	struct {
287		u_int32_t	limit;
288		u_int32_t	seconds;
289	}			 pktrate;
290} filter_opts;
291
292struct antispoof_opts {
293	char			*label;
294	u_int			 rtableid;
295} antispoof_opts;
296
297struct scrub_opts {
298	int			marker;
299	int			nodf;
300	int			minttl;
301	int			maxmss;
302	int			settos;
303	int			randomid;
304	int			reassemble_tcp;
305} scrub_opts;
306
307struct node_sc {
308	struct node_queue_bw	m1;
309	u_int			d;
310	struct node_queue_bw	m2;
311};
312
313struct node_fq {
314	u_int			flows;
315	u_int			quantum;
316	u_int			target;
317	u_int			interval;
318};
319
320struct queue_opts {
321	int		 marker;
322#define	QOM_BWSPEC	0x01
323#define	QOM_PARENT	0x02
324#define	QOM_DEFAULT	0x04
325#define	QOM_QLIMIT	0x08
326#define	QOM_FLOWS	0x10
327#define	QOM_QUANTUM	0x20
328	struct node_sc	 realtime;
329	struct node_sc	 linkshare;
330	struct node_sc	 upperlimit;
331	struct node_fq	 flowqueue;
332	char		*parent;
333	int		 flags;
334	u_int		 qlimit;
335} queue_opts;
336
337struct table_opts {
338	int			flags;
339	int			init_addr;
340	struct node_tinithead	init_nodes;
341} table_opts;
342
343struct node_hfsc_opts	 hfsc_opts;
344struct node_state_opt	*keep_state_defaults = NULL;
345
346int		 disallow_table(struct node_host *, const char *);
347int		 disallow_urpf_failed(struct node_host *, const char *);
348int		 disallow_alias(struct node_host *, const char *);
349int		 rule_consistent(struct pf_rule *, int);
350int		 process_tabledef(char *, struct table_opts *, int);
351void		 expand_label_str(char *, size_t, const char *, const char *);
352void		 expand_label_if(const char *, char *, size_t, const char *);
353void		 expand_label_addr(const char *, char *, size_t, u_int8_t,
354		    struct node_host *);
355void		 expand_label_port(const char *, char *, size_t,
356		    struct node_port *);
357void		 expand_label_proto(const char *, char *, size_t, u_int8_t);
358void		 expand_label_nr(const char *, char *, size_t);
359void		 expand_label(char *, size_t, const char *, u_int8_t,
360		    struct node_host *, struct node_port *, struct node_host *,
361		    struct node_port *, u_int8_t);
362int		 expand_divertspec(struct pf_rule *, struct divertspec *);
363int		 collapse_redirspec(struct pf_pool *, struct pf_rule *,
364		    struct redirspec *rs, u_int8_t);
365int		 apply_redirspec(struct pf_pool *, struct pf_rule *,
366		    struct redirspec *, int, struct node_port *);
367void		 expand_rule(struct pf_rule *, int, struct node_if *,
368		    struct redirspec *, struct redirspec *, struct redirspec *,
369		    struct node_proto *,
370		    struct node_os *, struct node_host *, struct node_port *,
371		    struct node_host *, struct node_port *, struct node_uid *,
372		    struct node_gid *, struct node_if *, struct node_icmp *,
373		    const char *);
374int		 expand_queue(char *, struct node_if *, struct queue_opts *);
375int		 expand_skip_interface(struct node_if *);
376
377int	 getservice(char *);
378int	 rule_label(struct pf_rule *, char *);
379
380void	 mv_rules(struct pf_ruleset *, struct pf_ruleset *);
381void	 decide_address_family(struct node_host *, sa_family_t *);
382int	 invalid_redirect(struct node_host *, sa_family_t);
383u_int16_t parseicmpspec(char *, sa_family_t);
384int	 kw_casecmp(const void *, const void *);
385int	 map_tos(char *string, int *);
386
387TAILQ_HEAD(loadanchorshead, loadanchors)
388    loadanchorshead = TAILQ_HEAD_INITIALIZER(loadanchorshead);
389
390struct loadanchors {
391	TAILQ_ENTRY(loadanchors)	 entries;
392	char				*anchorname;
393	char				*filename;
394};
395
396typedef struct {
397	union {
398		int64_t			 number;
399		double			 probability;
400		int			 i;
401		char			*string;
402		u_int			 rtableid;
403		u_int16_t		 weight;
404		struct {
405			u_int8_t	 b1;
406			u_int8_t	 b2;
407			u_int16_t	 w;
408			u_int16_t	 w2;
409		}			 b;
410		struct range		 range;
411		struct node_if		*interface;
412		struct node_proto	*proto;
413		struct node_icmp	*icmp;
414		struct node_host	*host;
415		struct node_os		*os;
416		struct node_port	*port;
417		struct node_uid		*uid;
418		struct node_gid		*gid;
419		struct node_state_opt	*state_opt;
420		struct peer		 peer;
421		struct {
422			struct peer	 src, dst;
423			struct node_os	*src_os;
424		}			 fromto;
425		struct redirection	*redirection;
426		struct {
427			int			 action;
428			struct node_state_opt	*options;
429		}			 keep_state;
430		struct {
431			u_int8_t	 log;
432			u_int8_t	 logif;
433			u_int8_t	 quick;
434		}			 logquick;
435		struct {
436			int		 neg;
437			char		*name;
438		}			 tagged;
439		struct pf_poolhashkey	*hashkey;
440		struct node_queue	*queue;
441		struct node_queue_opt	 queue_options;
442		struct node_queue_bw	 queue_bwspec;
443		struct node_qassign	 qassign;
444		struct node_sc		 sc;
445		struct filter_opts	 filter_opts;
446		struct antispoof_opts	 antispoof_opts;
447		struct queue_opts	 queue_opts;
448		struct scrub_opts	 scrub_opts;
449		struct table_opts	 table_opts;
450		struct pool_opts	 pool_opts;
451		struct node_hfsc_opts	 hfsc_opts;
452	} v;
453	int lineno;
454} YYSTYPE;
455
456#define PPORT_RANGE	1
457#define PPORT_STAR	2
458int	parseport(char *, struct range *r, int);
459
460#define DYNIF_MULTIADDR(addr) ((addr).type == PF_ADDR_DYNIFTL && \
461	(!((addr).iflags & PFI_AFLAG_NOALIAS) ||		 \
462	!isdigit((unsigned char)(addr).v.ifname[strlen((addr).v.ifname)-1])))
463
464%}
465
466%token	PASS BLOCK MATCH SCRUB RETURN IN OS OUT LOG QUICK ON FROM TO FLAGS
467%token	RETURNRST RETURNICMP RETURNICMP6 PROTO INET INET6 ALL ANY ICMPTYPE
468%token	ICMP6TYPE CODE KEEP MODULATE STATE PORT BINATTO NODF
469%token	MINTTL ERROR ALLOWOPTS FILENAME ROUTETO DUPTO REPLYTO NO LABEL
470%token	NOROUTE URPFFAILED FRAGMENT USER GROUP MAXMSS MAXIMUM TTL TOS DROP TABLE
471%token	REASSEMBLE ANCHOR
472%token	SET OPTIMIZATION TIMEOUT LIMIT LOGINTERFACE BLOCKPOLICY RANDOMID
473%token	SYNPROXY FINGERPRINTS NOSYNC DEBUG SKIP HOSTID
474%token	ANTISPOOF FOR INCLUDE MATCHES
475%token	BITMASK RANDOM SOURCEHASH ROUNDROBIN LEASTSTATES STATICPORT PROBABILITY
476%token	WEIGHT BANDWIDTH FLOWS QUANTUM
477%token	QUEUE PRIORITY QLIMIT RTABLE RDOMAIN MINIMUM BURST PARENT
478%token	LOAD RULESET_OPTIMIZATION RTABLE RDOMAIN PRIO ONCE DEFAULT
479%token	STICKYADDRESS MAXSRCSTATES MAXSRCNODES SOURCETRACK GLOBAL RULE
480%token	MAXSRCCONN MAXSRCCONNRATE OVERLOAD FLUSH SLOPPY PFLOW MAXPKTRATE
481%token	TAGGED TAG IFBOUND FLOATING STATEPOLICY STATEDEFAULTS ROUTE
482%token	DIVERTTO DIVERTREPLY DIVERTPACKET NATTO AFTO RDRTO RECEIVEDON NE LE GE
483%token	<v.string>		STRING
484%token	<v.number>		NUMBER
485%token	<v.i>			PORTBINARY
486%type	<v.interface>		interface if_list if_item_not if_item
487%type	<v.number>		number icmptype icmp6type uid gid
488%type	<v.number>		tos not yesno optnodf
489%type	<v.probability>		probability
490%type	<v.weight>		optweight
491%type	<v.i>			dir af optimizer
492%type	<v.i>			sourcetrack flush unaryop statelock
493%type	<v.b>			action
494%type	<v.b>			flags flag blockspec prio
495%type	<v.range>		portplain portstar portrange
496%type	<v.hashkey>		hashkey
497%type	<v.proto>		proto proto_list proto_item
498%type	<v.number>		protoval
499%type	<v.icmp>		icmpspec
500%type	<v.icmp>		icmp_list icmp_item
501%type	<v.icmp>		icmp6_list icmp6_item
502%type	<v.number>		reticmpspec reticmp6spec
503%type	<v.fromto>		fromto
504%type	<v.peer>		ipportspec from to
505%type	<v.host>		ipspec xhost host dynaddr host_list
506%type	<v.host>		table_host_list tablespec
507%type	<v.host>		redir_host_list redirspec
508%type	<v.host>		route_host route_host_list routespec
509%type	<v.os>			os xos os_list
510%type	<v.port>		portspec port_list port_item
511%type	<v.uid>			uids uid_list uid_item
512%type	<v.gid>			gids gid_list gid_item
513%type	<v.redirection>		redirpool
514%type	<v.string>		label stringall anchorname
515%type	<v.string>		string varstring numberstring
516%type	<v.keep_state>		keep
517%type	<v.state_opt>		state_opt_spec state_opt_list state_opt_item
518%type	<v.logquick>		logquick quick log logopts logopt
519%type	<v.interface>		antispoof_ifspc antispoof_iflst antispoof_if
520%type	<v.qassign>		qname
521%type	<v.queue_bwspec>	bandwidth
522%type	<v.filter_opts>		filter_opts filter_opt filter_opts_l
523%type	<v.filter_opts>		filter_sets filter_set filter_sets_l
524%type	<v.antispoof_opts>	antispoof_opts antispoof_opt antispoof_opts_l
525%type	<v.queue_opts>		queue_opts queue_opt queue_opts_l optscs
526%type	<v.sc>			scspec
527%type	<v.scrub_opts>		scrub_opts scrub_opt scrub_opts_l
528%type	<v.table_opts>		table_opts table_opt table_opts_l
529%type	<v.pool_opts>		pool_opts pool_opt pool_opts_l
530%%
531
532ruleset		: /* empty */
533		| ruleset include '\n'
534		| ruleset '\n'
535		| ruleset option '\n'
536		| ruleset pfrule '\n'
537		| ruleset anchorrule '\n'
538		| ruleset loadrule '\n'
539		| ruleset queuespec '\n'
540		| ruleset varset '\n'
541		| ruleset antispoof '\n'
542		| ruleset tabledef '\n'
543		| '{' fakeanchor '}' '\n';
544		| ruleset error '\n'		{ file->errors++; }
545		;
546
547include		: INCLUDE STRING		{
548			struct file	*nfile;
549
550			if ((nfile = pushfile($2, 0)) == NULL) {
551				yyerror("failed to include file %s", $2);
552				free($2);
553				YYERROR;
554			}
555			free($2);
556
557			file = nfile;
558			lungetc('\n');
559		}
560		;
561
562/*
563 * apply to previously specified rule: must be careful to note
564 * what that is: pf or nat or binat or rdr
565 */
566fakeanchor	: fakeanchor '\n'
567		| fakeanchor anchorrule '\n'
568		| fakeanchor pfrule '\n'
569		| fakeanchor error '\n'
570		;
571
572optimizer	: string	{
573			if (!strcmp($1, "none"))
574				$$ = 0;
575			else if (!strcmp($1, "basic"))
576				$$ = PF_OPTIMIZE_BASIC;
577			else if (!strcmp($1, "profile"))
578				$$ = PF_OPTIMIZE_BASIC | PF_OPTIMIZE_PROFILE;
579			else {
580				yyerror("unknown ruleset-optimization %s", $1);
581				YYERROR;
582			}
583		}
584		;
585
586optnodf		: /* empty */	{ $$ = 0; }
587		| NODF		{ $$ = 1; }
588		;
589
590option		: SET REASSEMBLE yesno optnodf		{
591			pfctl_set_reassembly(pf, $3, $4);
592		}
593		| SET OPTIMIZATION STRING		{
594			if (pfctl_set_optimization(pf, $3) != 0) {
595				yyerror("unknown optimization %s", $3);
596				free($3);
597				YYERROR;
598			}
599			free($3);
600		}
601		| SET RULESET_OPTIMIZATION optimizer {
602			if (!(pf->opts & PF_OPT_OPTIMIZE)) {
603				pf->opts |= PF_OPT_OPTIMIZE;
604				pf->optimize = $3;
605			}
606		}
607		| SET TIMEOUT timeout_spec
608		| SET TIMEOUT '{' optnl timeout_list '}'
609		| SET LIMIT limit_spec
610		| SET LIMIT '{' optnl limit_list '}'
611		| SET LOGINTERFACE stringall		{
612			if (pfctl_set_logif(pf, $3) != 0) {
613				yyerror("error setting loginterface %s", $3);
614				free($3);
615				YYERROR;
616			}
617			free($3);
618		}
619		| SET HOSTID number {
620			if ($3 == 0 || $3 > UINT_MAX) {
621				yyerror("hostid must be non-zero");
622				YYERROR;
623			}
624			pfctl_set_hostid(pf, $3);
625		}
626		| SET BLOCKPOLICY DROP	{
627			if (pf->opts & PF_OPT_VERBOSE)
628				printf("set block-policy drop\n");
629			blockpolicy = PFRULE_DROP;
630		}
631		| SET BLOCKPOLICY RETURN {
632			if (pf->opts & PF_OPT_VERBOSE)
633				printf("set block-policy return\n");
634			blockpolicy = PFRULE_RETURN;
635		}
636		| SET FINGERPRINTS STRING {
637			if (pf->opts & PF_OPT_VERBOSE)
638				printf("set fingerprints \"%s\"\n", $3);
639			if (!pf->anchor->name[0]) {
640				if (pfctl_file_fingerprints(pf->dev,
641				    pf->opts, $3)) {
642					yyerror("error loading "
643					    "fingerprints %s", $3);
644					free($3);
645					YYERROR;
646				}
647			}
648			free($3);
649		}
650		| SET STATEPOLICY statelock {
651			if (pf->opts & PF_OPT_VERBOSE)
652				switch ($3) {
653				case 0:
654					printf("set state-policy floating\n");
655					break;
656				case PFRULE_IFBOUND:
657					printf("set state-policy if-bound\n");
658					break;
659				}
660			default_statelock = $3;
661		}
662		| SET DEBUG STRING {
663			if (pfctl_set_debug(pf, $3) != 0) {
664				yyerror("error setting debuglevel %s", $3);
665				free($3);
666				YYERROR;
667			}
668			free($3);
669		}
670		| SET DEBUG DEBUG {
671			if (pfctl_set_debug(pf, "debug") != 0) {
672				yyerror("error setting debuglevel %s", "debug");
673				YYERROR;
674			}
675		}
676		| SET SKIP interface {
677			if (expand_skip_interface($3) != 0) {
678				yyerror("error setting skip interface(s)");
679				YYERROR;
680			}
681		}
682		| SET STATEDEFAULTS state_opt_list {
683			if (keep_state_defaults != NULL) {
684				yyerror("cannot redefine state-defaults");
685				YYERROR;
686			}
687			keep_state_defaults = $3;
688		}
689		;
690
691stringall	: STRING	{ $$ = $1; }
692		| ALL		{
693			if (($$ = strdup("all")) == NULL) {
694				err(1, "stringall: strdup");
695			}
696		}
697		;
698
699string		: STRING string				{
700			if (asprintf(&$$, "%s %s", $1, $2) == -1)
701				err(1, "string: asprintf");
702			free($1);
703			free($2);
704		}
705		| STRING
706		;
707
708varstring	: numberstring varstring 		{
709			if (asprintf(&$$, "%s %s", $1, $2) == -1)
710				err(1, "string: asprintf");
711			free($1);
712			free($2);
713		}
714		| numberstring
715		;
716
717numberstring	: NUMBER				{
718			char	*s;
719			if (asprintf(&s, "%lld", $1) == -1) {
720				yyerror("string: asprintf");
721				YYERROR;
722			}
723			$$ = s;
724		}
725		| STRING
726		;
727
728varset		: STRING '=' varstring	{
729			char *s = $1;
730			if (pf->opts & PF_OPT_VERBOSE)
731				printf("%s = \"%s\"\n", $1, $3);
732			while (*s++) {
733				if (isspace((unsigned char)*s)) {
734					yyerror("macro name cannot contain "
735					    "whitespace");
736					YYERROR;
737				}
738			}
739			if (symset($1, $3, 0) == -1)
740				err(1, "cannot store variable %s", $1);
741			free($1);
742			free($3);
743		}
744		;
745
746anchorname	: STRING			{ $$ = $1; }
747		| /* empty */			{ $$ = NULL; }
748		;
749
750pfa_anchorlist	: /* empty */
751		| pfa_anchorlist '\n'
752		| pfa_anchorlist pfrule '\n'
753		| pfa_anchorlist anchorrule '\n'
754		| pfa_anchorlist include '\n'
755		;
756
757pfa_anchor	: '{'
758		{
759			char ta[PF_ANCHOR_NAME_SIZE];
760			struct pf_ruleset *rs;
761
762			/* steping into a brace anchor */
763			pf->asd++;
764			pf->bn++;
765			pf->brace = 1;
766
767			/*
768			 * Anchor contents are parsed before the anchor rule
769			 * production completes, so we don't know the real
770			 * location yet. Create a holding ruleset in the root;
771			 * contents will be moved afterwards.
772			 */
773			snprintf(ta, PF_ANCHOR_NAME_SIZE, "_%d", pf->bn);
774			rs = pf_find_or_create_ruleset(ta);
775			if (rs == NULL)
776				err(1, "pfa_anchor: pf_find_or_create_ruleset");
777			pf->astack[pf->asd] = rs->anchor;
778			pf->anchor = rs->anchor;
779		} '\n' pfa_anchorlist '}'
780		{
781			pf->alast = pf->anchor;
782			pf->asd--;
783			pf->anchor = pf->astack[pf->asd];
784		}
785		| /* empty */
786		;
787
788anchorrule	: ANCHOR anchorname dir quick interface af proto fromto
789		    filter_opts pfa_anchor
790		{
791			struct pf_rule	r;
792			struct node_proto	*proto;
793
794			if ($2 && ($2[0] == '_' || strstr($2, "/_") != NULL)) {
795				free($2);
796				yyerror("anchor names beginning with '_' "
797				    "are reserved for internal use");
798				YYERROR;
799			}
800
801			memset(&r, 0, sizeof(r));
802			if (pf->astack[pf->asd + 1]) {
803				if ($2 && strchr($2, '/') != NULL) {
804					free($2);
805					yyerror("anchor paths containing '/' "
806				    	    "cannot be used for inline anchors.");
807					YYERROR;
808				}
809
810				/* Move inline rules into relative location. */
811				pf_anchor_setup(&r,
812				    &pf->astack[pf->asd]->ruleset,
813				    $2 ? $2 : pf->alast->name);
814
815				if (r.anchor == NULL)
816					err(1, "anchorrule: unable to "
817					    "create ruleset");
818
819				if (pf->alast != r.anchor) {
820					if (r.anchor->match) {
821						yyerror("inline anchor '%s' "
822						    "already exists",
823						    r.anchor->name);
824						YYERROR;
825					}
826					mv_rules(&pf->alast->ruleset,
827					    &r.anchor->ruleset);
828				}
829				pf_remove_if_empty_ruleset(&pf->alast->ruleset);
830				pf->alast = r.anchor;
831			} else {
832				if (!$2) {
833					yyerror("anchors without explicit "
834					    "rules must specify a name");
835					YYERROR;
836				}
837			}
838			r.direction = $3;
839			r.quick = $4.quick;
840			r.af = $6;
841			r.prob = $9.prob;
842			r.rtableid = $9.rtableid;
843			r.pktrate.limit = $9.pktrate.limit;
844			r.pktrate.seconds = $9.pktrate.seconds;
845
846			if ($9.tag)
847				if (strlcpy(r.tagname, $9.tag,
848				    PF_TAG_NAME_SIZE) >= PF_TAG_NAME_SIZE) {
849					yyerror("tag too long, max %u chars",
850					    PF_TAG_NAME_SIZE - 1);
851					YYERROR;
852				}
853			if ($9.match_tag)
854				if (strlcpy(r.match_tagname, $9.match_tag,
855				    PF_TAG_NAME_SIZE) >= PF_TAG_NAME_SIZE) {
856					yyerror("tag too long, max %u chars",
857					    PF_TAG_NAME_SIZE - 1);
858					YYERROR;
859				}
860			r.match_tag_not = $9.match_tag_not;
861			if (rule_label(&r, $9.label))
862				YYERROR;
863			free($9.label);
864			r.flags = $9.flags.b1;
865			r.flagset = $9.flags.b2;
866			if (($9.flags.b1 & $9.flags.b2) != $9.flags.b1) {
867				yyerror("flags always false");
868				YYERROR;
869			}
870			if ($9.flags.b1 || $9.flags.b2 || $8.src_os) {
871				for (proto = $7; proto != NULL &&
872				    proto->proto != IPPROTO_TCP;
873				    proto = proto->next)
874					;	/* nothing */
875				if (proto == NULL && $7 != NULL) {
876					if ($9.flags.b1 || $9.flags.b2)
877						yyerror(
878						    "flags only apply to tcp");
879					if ($8.src_os)
880						yyerror(
881						    "OS fingerprinting only "
882						    "applies to tcp");
883					YYERROR;
884				}
885			}
886
887			r.tos = $9.tos;
888
889			if ($9.keep.action) {
890				yyerror("cannot specify state handling "
891				    "on anchors");
892				YYERROR;
893			}
894
895			if ($9.route.rt) {
896				yyerror("cannot specify route handling "
897				    "on anchors");
898				YYERROR;
899			}
900
901			if ($9.marker & FOM_ONCE) {
902				yyerror("cannot specify 'once' "
903				    "on anchors");
904				YYERROR;
905			}
906
907			if ($9.match_tag)
908				if (strlcpy(r.match_tagname, $9.match_tag,
909				    PF_TAG_NAME_SIZE) >= PF_TAG_NAME_SIZE) {
910					yyerror("tag too long, max %u chars",
911					    PF_TAG_NAME_SIZE - 1);
912					YYERROR;
913				}
914			r.match_tag_not = $9.match_tag_not;
915			if ($9.marker & FOM_PRIO) {
916				if ($9.prio == 0)
917					r.prio = PF_PRIO_ZERO;
918				else
919					r.prio = $9.prio;
920			}
921			if ($9.marker & FOM_SETPRIO) {
922				r.set_prio[0] = $9.set_prio[0];
923				r.set_prio[1] = $9.set_prio[1];
924				r.scrub_flags |= PFSTATE_SETPRIO;
925			}
926
927			decide_address_family($8.src.host, &r.af);
928			decide_address_family($8.dst.host, &r.af);
929
930			expand_rule(&r, 0, $5, NULL, NULL, NULL, $7, $8.src_os,
931			    $8.src.host, $8.src.port, $8.dst.host, $8.dst.port,
932			    $9.uid, $9.gid, $9.rcv, $9.icmpspec,
933			    pf->astack[pf->asd + 1] ? pf->alast->name : $2);
934			free($2);
935			pf->astack[pf->asd + 1] = NULL;
936		}
937		;
938
939loadrule	: LOAD ANCHOR string FROM string	{
940			struct loadanchors	*loadanchor;
941
942			if (strlen(pf->anchor->path) + 1 +
943			    strlen($3) >= PATH_MAX) {
944				yyerror("anchorname %s too long, max %u\n",
945				    $3, PATH_MAX - 1);
946				free($3);
947				YYERROR;
948			}
949			loadanchor = calloc(1, sizeof(struct loadanchors));
950			if (loadanchor == NULL)
951				err(1, "loadrule: calloc");
952			if ((loadanchor->anchorname = malloc(PATH_MAX)) ==
953			    NULL)
954				err(1, "loadrule: malloc");
955			if (pf->anchor->name[0])
956				snprintf(loadanchor->anchorname, PATH_MAX,
957				    "%s/%s", pf->anchor->path, $3);
958			else
959				strlcpy(loadanchor->anchorname, $3, PATH_MAX);
960			if ((loadanchor->filename = strdup($5)) == NULL)
961				err(1, "loadrule: strdup");
962
963			TAILQ_INSERT_TAIL(&loadanchorshead, loadanchor,
964			    entries);
965
966			free($3);
967			free($5);
968		};
969
970scrub_opts	:	{
971				bzero(&scrub_opts, sizeof scrub_opts);
972			}
973		    scrub_opts_l
974			{ $$ = scrub_opts; }
975		;
976
977scrub_opts_l	: scrub_opts_l comma scrub_opt
978		| scrub_opt
979		;
980
981scrub_opt	: NODF	{
982			if (scrub_opts.nodf) {
983				yyerror("no-df cannot be respecified");
984				YYERROR;
985			}
986			scrub_opts.nodf = 1;
987		}
988		| MINTTL NUMBER {
989			if (scrub_opts.marker & FOM_MINTTL) {
990				yyerror("min-ttl cannot be respecified");
991				YYERROR;
992			}
993			if ($2 < 0 || $2 > 255) {
994				yyerror("illegal min-ttl value %d", $2);
995				YYERROR;
996			}
997			scrub_opts.marker |= FOM_MINTTL;
998			scrub_opts.minttl = $2;
999		}
1000		| MAXMSS NUMBER {
1001			if (scrub_opts.marker & FOM_MAXMSS) {
1002				yyerror("max-mss cannot be respecified");
1003				YYERROR;
1004			}
1005			if ($2 < 0 || $2 > 65535) {
1006				yyerror("illegal max-mss value %d", $2);
1007				YYERROR;
1008			}
1009			scrub_opts.marker |= FOM_MAXMSS;
1010			scrub_opts.maxmss = $2;
1011		}
1012		| REASSEMBLE STRING {
1013			if (strcasecmp($2, "tcp") != 0) {
1014				yyerror("scrub reassemble supports only tcp, "
1015				    "not '%s'", $2);
1016				free($2);
1017				YYERROR;
1018			}
1019			free($2);
1020			if (scrub_opts.reassemble_tcp) {
1021				yyerror("reassemble tcp cannot be respecified");
1022				YYERROR;
1023			}
1024			scrub_opts.reassemble_tcp = 1;
1025		}
1026		| RANDOMID {
1027			if (scrub_opts.randomid) {
1028				yyerror("random-id cannot be respecified");
1029				YYERROR;
1030			}
1031			scrub_opts.randomid = 1;
1032		}
1033		;
1034
1035antispoof	: ANTISPOOF logquick antispoof_ifspc af antispoof_opts {
1036			struct pf_rule		 r;
1037			struct node_host	*h = NULL, *hh;
1038			struct node_if		*i, *j;
1039
1040			for (i = $3; i; i = i->next) {
1041				bzero(&r, sizeof(r));
1042
1043				r.action = PF_DROP;
1044				r.direction = PF_IN;
1045				r.log = $2.log;
1046				r.logif = $2.logif;
1047				r.quick = $2.quick;
1048				r.af = $4;
1049				if (rule_label(&r, $5.label))
1050					YYERROR;
1051				r.rtableid = $5.rtableid;
1052				j = calloc(1, sizeof(struct node_if));
1053				if (j == NULL)
1054					err(1, "antispoof: calloc");
1055				if (strlcpy(j->ifname, i->ifname,
1056				    sizeof(j->ifname)) >= sizeof(j->ifname)) {
1057					free(j);
1058					yyerror("interface name too long");
1059					YYERROR;
1060				}
1061				j->not = 1;
1062				if (i->dynamic) {
1063					h = calloc(1, sizeof(*h));
1064					if (h == NULL)
1065						err(1, "address: calloc");
1066					h->addr.type = PF_ADDR_DYNIFTL;
1067					set_ipmask(h, 128);
1068					if (strlcpy(h->addr.v.ifname, i->ifname,
1069					    sizeof(h->addr.v.ifname)) >=
1070					    sizeof(h->addr.v.ifname)) {
1071						free(h);
1072						yyerror(
1073						    "interface name too long");
1074						YYERROR;
1075					}
1076					hh = malloc(sizeof(*hh));
1077					if (hh == NULL)
1078						 err(1, "address: malloc");
1079					bcopy(h, hh, sizeof(*hh));
1080					h->addr.iflags = PFI_AFLAG_NETWORK;
1081				} else {
1082					h = ifa_lookup(j->ifname,
1083					    PFI_AFLAG_NETWORK);
1084					hh = NULL;
1085				}
1086
1087				if (h != NULL)
1088					expand_rule(&r, 0, j, NULL, NULL, NULL,
1089					    NULL, NULL, h, NULL, NULL, NULL,
1090					    NULL, NULL, NULL, NULL, "");
1091
1092				if ((i->ifa_flags & IFF_LOOPBACK) == 0) {
1093					bzero(&r, sizeof(r));
1094
1095					r.action = PF_DROP;
1096					r.direction = PF_IN;
1097					r.log = $2.log;
1098					r.logif = $2.logif;
1099					r.quick = $2.quick;
1100					r.af = $4;
1101					if (rule_label(&r, $5.label))
1102						YYERROR;
1103					r.rtableid = $5.rtableid;
1104					if (hh != NULL)
1105						h = hh;
1106					else
1107						h = ifa_lookup(i->ifname, 0);
1108					if (h != NULL)
1109						expand_rule(&r, 0, NULL, NULL,
1110						    NULL, NULL, NULL, NULL, h,
1111						    NULL, NULL, NULL, NULL,
1112						    NULL, NULL, NULL, "");
1113				} else
1114					free(hh);
1115			}
1116			free($5.label);
1117		}
1118		;
1119
1120antispoof_ifspc	: FOR antispoof_if			{ $$ = $2; }
1121		| FOR '{' optnl antispoof_iflst '}'	{ $$ = $4; }
1122		;
1123
1124antispoof_iflst	: antispoof_if optnl			{ $$ = $1; }
1125		| antispoof_iflst comma antispoof_if optnl {
1126			$1->tail->next = $3;
1127			$1->tail = $3;
1128			$$ = $1;
1129		}
1130		;
1131
1132antispoof_if	: if_item				{ $$ = $1; }
1133		| '(' if_item ')'			{
1134			$2->dynamic = 1;
1135			$$ = $2;
1136		}
1137		;
1138
1139antispoof_opts	:	{
1140				bzero(&antispoof_opts, sizeof antispoof_opts);
1141				antispoof_opts.rtableid = -1;
1142			}
1143		    antispoof_opts_l
1144			{ $$ = antispoof_opts; }
1145		| /* empty */	{
1146			bzero(&antispoof_opts, sizeof antispoof_opts);
1147			antispoof_opts.rtableid = -1;
1148			$$ = antispoof_opts;
1149		}
1150		;
1151
1152antispoof_opts_l	: antispoof_opts_l antispoof_opt
1153			| antispoof_opt
1154			;
1155
1156antispoof_opt	: LABEL label	{
1157			if (antispoof_opts.label) {
1158				yyerror("label cannot be redefined");
1159				YYERROR;
1160			}
1161			antispoof_opts.label = $2;
1162		}
1163		| RTABLE NUMBER				{
1164			if ($2 < 0 || $2 > RT_TABLEID_MAX) {
1165				yyerror("invalid rtable id");
1166				YYERROR;
1167			}
1168			antispoof_opts.rtableid = $2;
1169		}
1170		;
1171
1172not		: '!'		{ $$ = 1; }
1173		| /* empty */	{ $$ = 0; }
1174		;
1175
1176tabledef	: TABLE '<' STRING '>' table_opts {
1177			struct node_host	 *h, *nh;
1178			struct node_tinit	 *ti, *nti;
1179
1180			if (strlen($3) >= PF_TABLE_NAME_SIZE) {
1181				yyerror("table name too long, max %d chars",
1182				    PF_TABLE_NAME_SIZE - 1);
1183				free($3);
1184				YYERROR;
1185			}
1186			if (process_tabledef($3, &$5, pf->opts)) {
1187				free($3);
1188				YYERROR;
1189			}
1190			free($3);
1191			for (ti = SIMPLEQ_FIRST(&$5.init_nodes); ti != NULL;
1192			    ti = nti) {
1193				if (ti->file)
1194					free(ti->file);
1195				for (h = ti->host; h != NULL; h = nh) {
1196					nh = h->next;
1197					free(h);
1198				}
1199				nti = SIMPLEQ_NEXT(ti, entries);
1200				free(ti);
1201			}
1202		}
1203		;
1204
1205table_opts	:	{
1206			bzero(&table_opts, sizeof table_opts);
1207			SIMPLEQ_INIT(&table_opts.init_nodes);
1208		}
1209		    table_opts_l
1210			{ $$ = table_opts; }
1211		| /* empty */
1212			{
1213			bzero(&table_opts, sizeof table_opts);
1214			SIMPLEQ_INIT(&table_opts.init_nodes);
1215			$$ = table_opts;
1216		}
1217		;
1218
1219table_opts_l	: table_opts_l table_opt
1220		| table_opt
1221		;
1222
1223table_opt	: STRING		{
1224			if (!strcmp($1, "const"))
1225				table_opts.flags |= PFR_TFLAG_CONST;
1226			else if (!strcmp($1, "persist"))
1227				table_opts.flags |= PFR_TFLAG_PERSIST;
1228			else if (!strcmp($1, "counters"))
1229				table_opts.flags |= PFR_TFLAG_COUNTERS;
1230			else {
1231				yyerror("invalid table option '%s'", $1);
1232				free($1);
1233				YYERROR;
1234			}
1235			free($1);
1236		}
1237		| '{' optnl '}'		{ table_opts.init_addr = 1; }
1238		| '{' optnl table_host_list '}'	{
1239			struct node_host	*n;
1240			struct node_tinit	*ti;
1241
1242			for (n = $3; n != NULL; n = n->next) {
1243				switch (n->addr.type) {
1244				case PF_ADDR_ADDRMASK:
1245					continue; /* ok */
1246				case PF_ADDR_RANGE:
1247					yyerror("address ranges are not "
1248					    "permitted inside tables");
1249					break;
1250				case PF_ADDR_DYNIFTL:
1251					yyerror("dynamic addresses are not "
1252					    "permitted inside tables");
1253					break;
1254				case PF_ADDR_TABLE:
1255					yyerror("tables cannot contain tables");
1256					break;
1257				case PF_ADDR_NOROUTE:
1258					yyerror("\"no-route\" is not permitted "
1259					    "inside tables");
1260					break;
1261				case PF_ADDR_URPFFAILED:
1262					yyerror("\"urpf-failed\" is not "
1263					    "permitted inside tables");
1264					break;
1265				default:
1266					yyerror("unknown address type %d",
1267					    n->addr.type);
1268				}
1269				YYERROR;
1270			}
1271			if (!(ti = calloc(1, sizeof(*ti))))
1272				err(1, "table_opt: calloc");
1273			ti->host = $3;
1274			SIMPLEQ_INSERT_TAIL(&table_opts.init_nodes, ti,
1275			    entries);
1276			table_opts.init_addr = 1;
1277		}
1278		| FILENAME STRING	{
1279			struct node_tinit	*ti;
1280
1281			if (!(ti = calloc(1, sizeof(*ti))))
1282				err(1, "table_opt: calloc");
1283			ti->file = $2;
1284			SIMPLEQ_INSERT_TAIL(&table_opts.init_nodes, ti,
1285			    entries);
1286			table_opts.init_addr = 1;
1287		}
1288		;
1289
1290tablespec	: xhost	optweight		{
1291			if ($2 > 0) {
1292				struct node_host	*n;
1293				for (n = $1; n != NULL; n = n->next)
1294					n->weight = $2;
1295			}
1296			$$ = $1;
1297		}
1298		| '{' optnl table_host_list '}'	{ $$ = $3; }
1299		;
1300
1301table_host_list	: tablespec optnl			{ $$ = $1; }
1302		| table_host_list comma tablespec optnl {
1303			$1->tail->next = $3;
1304			$1->tail = $3->tail;
1305			$$ = $1;
1306		}
1307		;
1308
1309queuespec	: QUEUE STRING interface queue_opts		{
1310			if ($3 == NULL && $4.parent == NULL) {
1311				yyerror("root queue without interface");
1312				YYERROR;
1313			}
1314			expand_queue($2, $3, &$4);
1315		}
1316		;
1317
1318queue_opts	:	{
1319			bzero(&queue_opts, sizeof queue_opts);
1320		}
1321		    queue_opts_l
1322			{ $$ = queue_opts; }
1323		;
1324
1325queue_opts_l	: queue_opts_l queue_opt
1326		| queue_opt
1327		;
1328
1329queue_opt	: BANDWIDTH scspec optscs			{
1330			if (queue_opts.marker & QOM_BWSPEC) {
1331				yyerror("bandwidth cannot be respecified");
1332				YYERROR;
1333			}
1334			queue_opts.marker |= QOM_BWSPEC;
1335			queue_opts.linkshare = $2;
1336			queue_opts.realtime= $3.realtime;
1337			queue_opts.upperlimit = $3.upperlimit;
1338		}
1339		| PARENT STRING					{
1340			if (queue_opts.marker & QOM_PARENT) {
1341				yyerror("parent cannot be respecified");
1342				YYERROR;
1343			}
1344			queue_opts.marker |= QOM_PARENT;
1345			queue_opts.parent = $2;
1346		}
1347		| DEFAULT					{
1348			if (queue_opts.marker & QOM_DEFAULT) {
1349				yyerror("default cannot be respecified");
1350				YYERROR;
1351			}
1352			queue_opts.marker |= QOM_DEFAULT;
1353			queue_opts.flags |= PFQS_DEFAULT;
1354		}
1355		| QLIMIT NUMBER					{
1356			if (queue_opts.marker & QOM_QLIMIT) {
1357				yyerror("qlimit cannot be respecified");
1358				YYERROR;
1359			}
1360			if ($2 < 0 || $2 > 65535) {
1361				yyerror("qlimit out of range: max 65535");
1362				YYERROR;
1363			}
1364			queue_opts.marker |= QOM_QLIMIT;
1365			queue_opts.qlimit = $2;
1366		}
1367		| FLOWS NUMBER					{
1368			if (queue_opts.marker & QOM_FLOWS) {
1369				yyerror("number of flows cannot be respecified");
1370				YYERROR;
1371			}
1372			if ($2 < 1 || $2 > 32767) {
1373				yyerror("number of flows out of range: "
1374				    "max 32767");
1375				YYERROR;
1376			}
1377			queue_opts.marker |= QOM_FLOWS;
1378			queue_opts.flags |= PFQS_FLOWQUEUE;
1379			queue_opts.flowqueue.flows = $2;
1380		}
1381		| QUANTUM NUMBER				{
1382			if (queue_opts.marker & QOM_QUANTUM) {
1383				yyerror("quantum cannot be respecified");
1384				YYERROR;
1385			}
1386			if ($2 < 1 || $2 > 65535) {
1387				yyerror("quantum out of range: max 65535");
1388				YYERROR;
1389			}
1390			queue_opts.marker |= QOM_QUANTUM;
1391			queue_opts.flowqueue.quantum = $2;
1392		}
1393		;
1394
1395optscs		: /* nada */					{
1396
1397		}
1398		| comma MINIMUM scspec				{
1399			$$.realtime = $3;
1400		}
1401		| comma MAXIMUM scspec				{
1402			$$.upperlimit = $3;
1403		}
1404		| comma MINIMUM scspec comma MAXIMUM scspec	{
1405			$$.realtime = $3;
1406			$$.upperlimit = $6;
1407		}
1408		| comma MAXIMUM scspec comma MINIMUM scspec	{
1409			$$.realtime = $6;
1410			$$.upperlimit = $3;
1411		}
1412		;
1413
1414scspec		: bandwidth					{
1415			$$.m2 = $1;
1416			$$.d = 0;
1417			if ($$.m2.bw_percent) {
1418				yyerror("no bandwidth in %% yet");
1419				YYERROR;
1420			}
1421		}
1422		| bandwidth BURST bandwidth FOR STRING	{
1423			u_long	 ul;
1424			char	*cp;
1425
1426			ul = strtoul($5, &cp, 10);
1427			if (cp == NULL || strcmp(cp, "ms")) {
1428				yyerror("time in scspec must be in ms");
1429				YYERROR;
1430			}
1431
1432			$$.m1 = $3;
1433			$$.d = ul;
1434			$$.m2 = $1;
1435
1436			if ($$.m1.bw_percent || $$.m2.bw_percent) {
1437				yyerror("no bandwidth in %% yet");
1438				YYERROR;
1439			}
1440		}
1441		;
1442
1443bandwidth	: STRING {
1444			double	 bps;
1445			char	*cp;
1446
1447			$$.bw_percent = 0;
1448
1449			bps = strtod($1, &cp);
1450			if (cp != NULL) {
1451				if (strlen(cp) > 1) {
1452					char *cu = cp + 1;
1453					if (!strcmp(cu, "Bit") ||
1454					    !strcmp(cu, "B") ||
1455					    !strcmp(cu, "bit") ||
1456					    !strcmp(cu, "b")) {
1457						*cu = 0;
1458					}
1459				}
1460				if (!strcmp(cp, "b"))
1461					; /* nothing */
1462				else if (!strcmp(cp, "K"))
1463					bps *= 1000;
1464				else if (!strcmp(cp, "M"))
1465					bps *= 1000 * 1000;
1466				else if (!strcmp(cp, "G"))
1467					bps *= 1000 * 1000 * 1000;
1468				else if (!strcmp(cp, "%")) {
1469					if (bps < 0 || bps > 100) {
1470						yyerror("bandwidth spec "
1471						    "out of range");
1472						free($1);
1473						YYERROR;
1474					}
1475					$$.bw_percent = bps;
1476					bps = 0;
1477				} else {
1478					yyerror("unknown unit \"%s\"", cp);
1479					free($1);
1480					YYERROR;
1481				}
1482			}
1483			free($1);
1484			$$.bw_absolute = (u_int32_t)bps;
1485		}
1486		| NUMBER {
1487			if ($1 < 0 || $1 > UINT_MAX) {
1488				yyerror("bandwidth number too big");
1489				YYERROR;
1490			}
1491			$$.bw_percent = 0;
1492			$$.bw_absolute = $1;
1493		}
1494		;
1495
1496pfrule		: action dir logquick interface af proto fromto
1497		    filter_opts
1498		{
1499			struct pf_rule		 r;
1500			struct node_state_opt	*o;
1501			struct node_proto	*proto;
1502			int			 srctrack = 0;
1503			int			 statelock = 0;
1504			int			 adaptive = 0;
1505			int			 defaults = 0;
1506
1507			memset(&r, 0, sizeof(r));
1508			r.action = $1.b1;
1509			switch ($1.b2) {
1510			case PFRULE_RETURNRST:
1511				r.rule_flag |= PFRULE_RETURNRST;
1512				r.return_ttl = $1.w;
1513				break;
1514			case PFRULE_RETURNICMP:
1515				r.rule_flag |= PFRULE_RETURNICMP;
1516				r.return_icmp = $1.w;
1517				r.return_icmp6 = $1.w2;
1518				break;
1519			case PFRULE_RETURN:
1520				r.rule_flag |= PFRULE_RETURN;
1521				r.return_icmp = $1.w;
1522				r.return_icmp6 = $1.w2;
1523				break;
1524			}
1525			r.direction = $2;
1526			r.log = $3.log;
1527			r.logif = $3.logif;
1528			r.quick = $3.quick;
1529			r.prob = $8.prob;
1530			r.rtableid = $8.rtableid;
1531
1532			if ($8.nodf)
1533				r.scrub_flags |= PFSTATE_NODF;
1534			if ($8.randomid)
1535				r.scrub_flags |= PFSTATE_RANDOMID;
1536			if ($8.minttl)
1537				r.min_ttl = $8.minttl;
1538			if ($8.max_mss)
1539				r.max_mss = $8.max_mss;
1540			if ($8.marker & FOM_SETTOS) {
1541				r.scrub_flags |= PFSTATE_SETTOS;
1542				r.set_tos = $8.settos;
1543			}
1544			if ($8.marker & FOM_SCRUB_TCP)
1545				r.scrub_flags |= PFSTATE_SCRUB_TCP;
1546			if ($8.marker & FOM_PRIO) {
1547				if ($8.prio == 0)
1548					r.prio = PF_PRIO_ZERO;
1549				else
1550					r.prio = $8.prio;
1551			}
1552			if ($8.marker & FOM_SETPRIO) {
1553				r.set_prio[0] = $8.set_prio[0];
1554				r.set_prio[1] = $8.set_prio[1];
1555				r.scrub_flags |= PFSTATE_SETPRIO;
1556			}
1557			if ($8.marker & FOM_ONCE) {
1558				if (r.action == PF_MATCH) {
1559					yyerror("can't specify once for "
1560					    "match rules");
1561					YYERROR;
1562				}
1563				r.rule_flag |= PFRULE_ONCE;
1564			}
1565			if ($8.marker & FOM_AFTO)
1566				r.rule_flag |= PFRULE_AFTO;
1567			if (($8.marker & FOM_AFTO) && r.direction != PF_IN) {
1568				yyerror("af-to can only be used with direction in");
1569				YYERROR;
1570			}
1571			if (($8.marker & FOM_AFTO) && $8.route.rt) {
1572				yyerror("af-to cannot be used together with "
1573				    "route-to, reply-to, dup-to");
1574				YYERROR;
1575			}
1576			r.af = $5;
1577
1578			if ($8.tag)
1579				if (strlcpy(r.tagname, $8.tag,
1580				    PF_TAG_NAME_SIZE) >= PF_TAG_NAME_SIZE) {
1581					yyerror("tag too long, max %u chars",
1582					    PF_TAG_NAME_SIZE - 1);
1583					YYERROR;
1584				}
1585			if ($8.match_tag)
1586				if (strlcpy(r.match_tagname, $8.match_tag,
1587				    PF_TAG_NAME_SIZE) >= PF_TAG_NAME_SIZE) {
1588					yyerror("tag too long, max %u chars",
1589					    PF_TAG_NAME_SIZE - 1);
1590					YYERROR;
1591				}
1592			r.match_tag_not = $8.match_tag_not;
1593			if (rule_label(&r, $8.label))
1594				YYERROR;
1595			free($8.label);
1596			r.flags = $8.flags.b1;
1597			r.flagset = $8.flags.b2;
1598			if (($8.flags.b1 & $8.flags.b2) != $8.flags.b1) {
1599				yyerror("flags always false");
1600				YYERROR;
1601			}
1602			if ($8.flags.b1 || $8.flags.b2 || $7.src_os) {
1603				for (proto = $6; proto != NULL &&
1604				    proto->proto != IPPROTO_TCP;
1605				    proto = proto->next)
1606					;	/* nothing */
1607				if (proto == NULL && $6 != NULL) {
1608					if ($8.flags.b1 || $8.flags.b2)
1609						yyerror(
1610						    "flags only apply to tcp");
1611					if ($7.src_os)
1612						yyerror(
1613						    "OS fingerprinting only "
1614						    "apply to tcp");
1615					YYERROR;
1616				}
1617#if 0
1618				if (($8.flags.b1 & parse_flags("S")) == 0 &&
1619				    $7.src_os) {
1620					yyerror("OS fingerprinting requires "
1621					    "the SYN TCP flag (flags S/SA)");
1622					YYERROR;
1623				}
1624#endif
1625			}
1626
1627			r.tos = $8.tos;
1628			r.pktrate.limit = $8.pktrate.limit;
1629			r.pktrate.seconds = $8.pktrate.seconds;
1630			r.keep_state = $8.keep.action;
1631			o = $8.keep.options;
1632
1633			/* 'keep state' by default on pass rules. */
1634			if (!r.keep_state && !r.action &&
1635			    !($8.marker & FOM_KEEP)) {
1636				r.keep_state = PF_STATE_NORMAL;
1637				o = keep_state_defaults;
1638				defaults = 1;
1639			}
1640
1641			while (o) {
1642				struct node_state_opt	*p = o;
1643
1644				switch (o->type) {
1645				case PF_STATE_OPT_MAX:
1646					if (r.max_states) {
1647						yyerror("state option 'max' "
1648						    "multiple definitions");
1649						YYERROR;
1650					}
1651					r.max_states = o->data.max_states;
1652					break;
1653				case PF_STATE_OPT_NOSYNC:
1654					if (r.rule_flag & PFRULE_NOSYNC) {
1655						yyerror("state option 'sync' "
1656						    "multiple definitions");
1657						YYERROR;
1658					}
1659					r.rule_flag |= PFRULE_NOSYNC;
1660					break;
1661				case PF_STATE_OPT_SRCTRACK:
1662					if (srctrack) {
1663						yyerror("state option "
1664						    "'source-track' "
1665						    "multiple definitions");
1666						YYERROR;
1667					}
1668					srctrack =  o->data.src_track;
1669					r.rule_flag |= PFRULE_SRCTRACK;
1670					break;
1671				case PF_STATE_OPT_MAX_SRC_STATES:
1672					if (r.max_src_states) {
1673						yyerror("state option "
1674						    "'max-src-states' "
1675						    "multiple definitions");
1676						YYERROR;
1677					}
1678					if (o->data.max_src_states == 0) {
1679						yyerror("'max-src-states' must "
1680						    "be > 0");
1681						YYERROR;
1682					}
1683					r.max_src_states =
1684					    o->data.max_src_states;
1685					r.rule_flag |= PFRULE_SRCTRACK;
1686					break;
1687				case PF_STATE_OPT_OVERLOAD:
1688					if (r.overload_tblname[0]) {
1689						yyerror("multiple 'overload' "
1690						    "table definitions");
1691						YYERROR;
1692					}
1693					if (strlcpy(r.overload_tblname,
1694					    o->data.overload.tblname,
1695					    PF_TABLE_NAME_SIZE) >=
1696					    PF_TABLE_NAME_SIZE) {
1697						yyerror("state option: "
1698						    "strlcpy");
1699						YYERROR;
1700					}
1701					r.flush = o->data.overload.flush;
1702					break;
1703				case PF_STATE_OPT_MAX_SRC_CONN:
1704					if (r.max_src_conn) {
1705						yyerror("state option "
1706						    "'max-src-conn' "
1707						    "multiple definitions");
1708						YYERROR;
1709					}
1710					if (o->data.max_src_conn == 0) {
1711						yyerror("'max-src-conn' "
1712						    "must be > 0");
1713						YYERROR;
1714					}
1715					r.max_src_conn =
1716					    o->data.max_src_conn;
1717					r.rule_flag |= PFRULE_SRCTRACK |
1718					    PFRULE_RULESRCTRACK;
1719					break;
1720				case PF_STATE_OPT_MAX_SRC_CONN_RATE:
1721					if (r.max_src_conn_rate.limit) {
1722						yyerror("state option "
1723						    "'max-src-conn-rate' "
1724						    "multiple definitions");
1725						YYERROR;
1726					}
1727					if (!o->data.max_src_conn_rate.limit ||
1728					    !o->data.max_src_conn_rate.seconds) {
1729						yyerror("'max-src-conn-rate' "
1730						    "values must be > 0");
1731						YYERROR;
1732					}
1733					if (o->data.max_src_conn_rate.limit >
1734					    PF_THRESHOLD_MAX) {
1735						yyerror("'max-src-conn-rate' "
1736						    "maximum rate must be < %u",
1737						    PF_THRESHOLD_MAX);
1738						YYERROR;
1739					}
1740					r.max_src_conn_rate.limit =
1741					    o->data.max_src_conn_rate.limit;
1742					r.max_src_conn_rate.seconds =
1743					    o->data.max_src_conn_rate.seconds;
1744					r.rule_flag |= PFRULE_SRCTRACK |
1745					    PFRULE_RULESRCTRACK;
1746					break;
1747				case PF_STATE_OPT_MAX_SRC_NODES:
1748					if (r.max_src_nodes) {
1749						yyerror("state option "
1750						    "'max-src-nodes' "
1751						    "multiple definitions");
1752						YYERROR;
1753					}
1754					if (o->data.max_src_nodes == 0) {
1755						yyerror("'max-src-nodes' must "
1756						    "be > 0");
1757						YYERROR;
1758					}
1759					r.max_src_nodes =
1760					    o->data.max_src_nodes;
1761					r.rule_flag |= PFRULE_SRCTRACK |
1762					    PFRULE_RULESRCTRACK;
1763					break;
1764				case PF_STATE_OPT_STATELOCK:
1765					if (statelock) {
1766						yyerror("state locking option: "
1767						    "multiple definitions");
1768						YYERROR;
1769					}
1770					statelock = 1;
1771					r.rule_flag |= o->data.statelock;
1772					break;
1773				case PF_STATE_OPT_SLOPPY:
1774					if (r.rule_flag & PFRULE_STATESLOPPY) {
1775						yyerror("state sloppy option: "
1776						    "multiple definitions");
1777						YYERROR;
1778					}
1779					r.rule_flag |= PFRULE_STATESLOPPY;
1780					break;
1781				case PF_STATE_OPT_PFLOW:
1782					if (r.rule_flag & PFRULE_PFLOW) {
1783						yyerror("state pflow "
1784						    "option: multiple "
1785						    "definitions");
1786						YYERROR;
1787					}
1788					r.rule_flag |= PFRULE_PFLOW;
1789					break;
1790				case PF_STATE_OPT_TIMEOUT:
1791					if (o->data.timeout.number ==
1792					    PFTM_ADAPTIVE_START ||
1793					    o->data.timeout.number ==
1794					    PFTM_ADAPTIVE_END)
1795						adaptive = 1;
1796					if (r.timeout[o->data.timeout.number]) {
1797						yyerror("state timeout %s "
1798						    "multiple definitions",
1799						    pf_timeouts[o->data.
1800						    timeout.number].name);
1801						YYERROR;
1802					}
1803					r.timeout[o->data.timeout.number] =
1804					    o->data.timeout.seconds;
1805				}
1806				o = o->next;
1807				if (!defaults)
1808					free(p);
1809			}
1810
1811			/* 'flags S/SA' by default on stateful rules */
1812			if (!r.action && !r.flags && !r.flagset &&
1813			    !$8.fragment && !($8.marker & FOM_FLAGS) &&
1814			    r.keep_state) {
1815				r.flags = parse_flags("S");
1816				r.flagset =  parse_flags("SA");
1817			}
1818			if (!adaptive && r.max_states) {
1819				r.timeout[PFTM_ADAPTIVE_START] =
1820				    (r.max_states / 10) * 6;
1821				r.timeout[PFTM_ADAPTIVE_END] =
1822				    (r.max_states / 10) * 12;
1823			}
1824			if (r.rule_flag & PFRULE_SRCTRACK) {
1825				if (srctrack == PF_SRCTRACK_GLOBAL &&
1826				    r.max_src_nodes) {
1827					yyerror("'max-src-nodes' is "
1828					    "incompatible with "
1829					    "'source-track global'");
1830					YYERROR;
1831				}
1832				if (srctrack == PF_SRCTRACK_GLOBAL &&
1833				    r.max_src_conn) {
1834					yyerror("'max-src-conn' is "
1835					    "incompatible with "
1836					    "'source-track global'");
1837					YYERROR;
1838				}
1839				if (srctrack == PF_SRCTRACK_GLOBAL &&
1840				    r.max_src_conn_rate.seconds) {
1841					yyerror("'max-src-conn-rate' is "
1842					    "incompatible with "
1843					    "'source-track global'");
1844					YYERROR;
1845				}
1846				if (r.timeout[PFTM_SRC_NODE] <
1847				    r.max_src_conn_rate.seconds)
1848					r.timeout[PFTM_SRC_NODE] =
1849					    r.max_src_conn_rate.seconds;
1850				r.rule_flag |= PFRULE_SRCTRACK;
1851				if (srctrack == PF_SRCTRACK_RULE)
1852					r.rule_flag |= PFRULE_RULESRCTRACK;
1853			}
1854			if (r.keep_state && !statelock)
1855				r.rule_flag |= default_statelock;
1856
1857			if ($8.fragment)
1858				r.rule_flag |= PFRULE_FRAGMENT;
1859			r.allow_opts = $8.allowopts;
1860
1861			decide_address_family($7.src.host, &r.af);
1862			decide_address_family($7.dst.host, &r.af);
1863
1864			if ($8.route.rt) {
1865				if (!r.direction) {
1866					yyerror("direction must be explicit "
1867					    "with rules that specify routing");
1868					YYERROR;
1869				}
1870				r.rt = $8.route.rt;
1871				r.route.opts = $8.route.pool_opts;
1872				if ($8.route.key != NULL)
1873					memcpy(&r.route.key, $8.route.key,
1874					    sizeof(struct pf_poolhashkey));
1875			}
1876			if (r.rt) {
1877				decide_address_family($8.route.host, &r.af);
1878				if ((r.route.opts & PF_POOL_TYPEMASK) ==
1879				    PF_POOL_NONE && ($8.route.host->next != NULL ||
1880				    $8.route.host->addr.type == PF_ADDR_TABLE ||
1881				    DYNIF_MULTIADDR($8.route.host->addr)))
1882					r.route.opts |= PF_POOL_ROUNDROBIN;
1883				if ($8.route.host->next != NULL) {
1884					if (!PF_POOL_DYNTYPE(r.route.opts)) {
1885						yyerror("address pool option "
1886						    "not supported by type");
1887						YYERROR;
1888					}
1889				}
1890				/* fake redirspec */
1891				if (($8.rroute.rdr = calloc(1,
1892				    sizeof(*$8.rroute.rdr))) == NULL)
1893					err(1, "$8.rroute.rdr");
1894				$8.rroute.rdr->host = $8.route.host;
1895			}
1896			if ($8.queues.qname != NULL) {
1897				if (strlcpy(r.qname, $8.queues.qname,
1898				    sizeof(r.qname)) >= sizeof(r.qname)) {
1899					yyerror("rule qname too long (max "
1900					    "%d chars)", sizeof(r.qname)-1);
1901					YYERROR;
1902				}
1903				free($8.queues.qname);
1904			}
1905			if ($8.queues.pqname != NULL) {
1906				if (strlcpy(r.pqname, $8.queues.pqname,
1907				    sizeof(r.pqname)) >= sizeof(r.pqname)) {
1908					yyerror("rule pqname too long (max "
1909					    "%d chars)", sizeof(r.pqname)-1);
1910					YYERROR;
1911				}
1912				free($8.queues.pqname);
1913			}
1914			if (expand_divertspec(&r, &$8.divert))
1915				YYERROR;
1916			r.divert_packet.port = $8.divert_packet.port;
1917
1918			expand_rule(&r, 0, $4, &$8.nat, &$8.rdr, &$8.rroute, $6,
1919			    $7.src_os,
1920			    $7.src.host, $7.src.port, $7.dst.host, $7.dst.port,
1921			    $8.uid, $8.gid, $8.rcv, $8.icmpspec, "");
1922		}
1923		;
1924
1925filter_opts	:	{
1926				bzero(&filter_opts, sizeof filter_opts);
1927				filter_opts.rtableid = -1;
1928			}
1929		    filter_opts_l
1930			{ $$ = filter_opts; }
1931		| /* empty */	{
1932			bzero(&filter_opts, sizeof filter_opts);
1933			filter_opts.rtableid = -1;
1934			$$ = filter_opts;
1935		}
1936		;
1937
1938filter_opts_l	: filter_opts_l filter_opt
1939		| filter_opt
1940		;
1941
1942filter_opt	: USER uids {
1943			if (filter_opts.uid)
1944				$2->tail->next = filter_opts.uid;
1945			filter_opts.uid = $2;
1946		}
1947		| GROUP gids {
1948			if (filter_opts.gid)
1949				$2->tail->next = filter_opts.gid;
1950			filter_opts.gid = $2;
1951		}
1952		| flags {
1953			if (filter_opts.marker & FOM_FLAGS) {
1954				yyerror("flags cannot be redefined");
1955				YYERROR;
1956			}
1957			filter_opts.marker |= FOM_FLAGS;
1958			filter_opts.flags.b1 |= $1.b1;
1959			filter_opts.flags.b2 |= $1.b2;
1960			filter_opts.flags.w |= $1.w;
1961			filter_opts.flags.w2 |= $1.w2;
1962		}
1963		| icmpspec {
1964			if (filter_opts.marker & FOM_ICMP) {
1965				yyerror("icmp-type cannot be redefined");
1966				YYERROR;
1967			}
1968			filter_opts.marker |= FOM_ICMP;
1969			filter_opts.icmpspec = $1;
1970		}
1971		| PRIO NUMBER {
1972			if (filter_opts.marker & FOM_PRIO) {
1973				yyerror("prio cannot be redefined");
1974				YYERROR;
1975			}
1976			if ($2 < 0 || $2 > IFQ_MAXPRIO) {
1977				yyerror("prio must be 0 - %u", IFQ_MAXPRIO);
1978				YYERROR;
1979			}
1980			filter_opts.marker |= FOM_PRIO;
1981			filter_opts.prio = $2;
1982		}
1983		| TOS tos {
1984			if (filter_opts.marker & FOM_TOS) {
1985				yyerror("tos cannot be redefined");
1986				YYERROR;
1987			}
1988			filter_opts.marker |= FOM_TOS;
1989			filter_opts.tos = $2;
1990		}
1991		| keep {
1992			if (filter_opts.marker & FOM_KEEP) {
1993				yyerror("modulate or keep cannot be redefined");
1994				YYERROR;
1995			}
1996			filter_opts.marker |= FOM_KEEP;
1997			filter_opts.keep.action = $1.action;
1998			filter_opts.keep.options = $1.options;
1999		}
2000		| FRAGMENT {
2001			filter_opts.fragment = 1;
2002		}
2003		| ALLOWOPTS {
2004			filter_opts.allowopts = 1;
2005		}
2006		| LABEL label	{
2007			if (filter_opts.label) {
2008				yyerror("label cannot be redefined");
2009				YYERROR;
2010			}
2011			filter_opts.label = $2;
2012		}
2013		| QUEUE qname	{
2014			if (filter_opts.queues.qname) {
2015				yyerror("queue cannot be redefined");
2016				YYERROR;
2017			}
2018			filter_opts.queues = $2;
2019		}
2020		| TAG string				{
2021			filter_opts.tag = $2;
2022		}
2023		| not TAGGED string			{
2024			filter_opts.match_tag = $3;
2025			filter_opts.match_tag_not = $1;
2026		}
2027		| PROBABILITY probability		{
2028			double	p;
2029
2030			p = floor($2 * UINT_MAX + 0.5);
2031			if (p < 0.0 || p > UINT_MAX) {
2032				yyerror("invalid probability: %g%%", $2 * 100);
2033				YYERROR;
2034			}
2035			filter_opts.prob = (u_int32_t)p;
2036			if (filter_opts.prob == 0)
2037				filter_opts.prob = 1;
2038		}
2039		| RTABLE NUMBER				{
2040			if ($2 < 0 || $2 > RT_TABLEID_MAX) {
2041				yyerror("invalid rtable id");
2042				YYERROR;
2043			}
2044			filter_opts.rtableid = $2;
2045		}
2046		| DIVERTTO STRING PORT portplain {
2047			if ((filter_opts.divert.addr = host($2, pf->opts)) == NULL) {
2048				yyerror("could not parse divert address: %s",
2049				    $2);
2050				free($2);
2051				YYERROR;
2052			}
2053			free($2);
2054			filter_opts.divert.port = $4.a;
2055			if (!filter_opts.divert.port) {
2056				yyerror("invalid divert port: %u", ntohs($4.a));
2057				YYERROR;
2058			}
2059		}
2060		| DIVERTREPLY {
2061			filter_opts.divert.port = 1;	/* some random value */
2062		}
2063		| DIVERTPACKET PORT number {
2064			/*
2065			 * If IP reassembly was not turned off, also
2066			 * forcibly enable TCP reassembly by default.
2067			 */
2068			if (pf->reassemble & PF_REASS_ENABLED)
2069				filter_opts.marker |= FOM_SCRUB_TCP;
2070
2071			if ($3 < 1 || $3 > 65535) {
2072				yyerror("invalid divert port");
2073				YYERROR;
2074			}
2075
2076			filter_opts.divert_packet.port = htons($3);
2077		}
2078		| SCRUB '(' scrub_opts ')' {
2079			filter_opts.nodf = $3.nodf;
2080			filter_opts.minttl = $3.minttl;
2081			filter_opts.randomid = $3.randomid;
2082			filter_opts.max_mss = $3.maxmss;
2083			if ($3.reassemble_tcp)
2084				filter_opts.marker |= FOM_SCRUB_TCP;
2085			filter_opts.marker |= $3.marker;
2086		}
2087		| NATTO redirpool pool_opts {
2088			if (filter_opts.nat.rdr) {
2089				yyerror("cannot respecify nat-to/binat-to");
2090				YYERROR;
2091			}
2092			filter_opts.nat.rdr = $2;
2093			memcpy(&filter_opts.nat.pool_opts, &$3,
2094			    sizeof(filter_opts.nat.pool_opts));
2095		}
2096		| AFTO af FROM redirpool pool_opts {
2097			if (filter_opts.nat.rdr) {
2098				yyerror("cannot respecify af-to");
2099				YYERROR;
2100			}
2101			if ($2 == 0) {
2102				yyerror("no target address family specified");
2103				YYERROR;
2104			}
2105			filter_opts.nat.af = $2;
2106			filter_opts.nat.rdr = $4;
2107			memcpy(&filter_opts.nat.pool_opts, &$5,
2108			    sizeof(filter_opts.nat.pool_opts));
2109			filter_opts.rdr.rdr =
2110			    calloc(1, sizeof(struct redirection));
2111			bzero(&filter_opts.rdr.pool_opts,
2112			    sizeof(filter_opts.rdr.pool_opts));
2113			filter_opts.marker |= FOM_AFTO;
2114		}
2115		| AFTO af FROM redirpool pool_opts TO redirpool pool_opts {
2116			if (filter_opts.nat.rdr) {
2117				yyerror("cannot respecify af-to");
2118				YYERROR;
2119			}
2120			if ($2 == 0) {
2121				yyerror("no address family specified");
2122				YYERROR;
2123			}
2124			if (($4->host->af && $4->host->af != $2) ||
2125			    ($7->host->af && $7->host->af != $2)) {
2126				yyerror("af-to addresses must be in the "
2127				    "target address family");
2128				YYERROR;
2129			}
2130			filter_opts.nat.af = $2;
2131			filter_opts.nat.rdr = $4;
2132			memcpy(&filter_opts.nat.pool_opts, &$5,
2133			    sizeof(filter_opts.nat.pool_opts));
2134			filter_opts.rdr.af = $2;
2135			filter_opts.rdr.rdr = $7;
2136			memcpy(&filter_opts.nat.pool_opts, &$8,
2137			    sizeof(filter_opts.nat.pool_opts));
2138			filter_opts.marker |= FOM_AFTO;
2139		}
2140		| RDRTO redirpool pool_opts {
2141			if (filter_opts.rdr.rdr) {
2142				yyerror("cannot respecify rdr-to");
2143				YYERROR;
2144			}
2145			filter_opts.rdr.rdr = $2;
2146			memcpy(&filter_opts.rdr.pool_opts, &$3,
2147			    sizeof(filter_opts.rdr.pool_opts));
2148		}
2149		| BINATTO redirpool pool_opts {
2150			if (filter_opts.nat.rdr) {
2151				yyerror("cannot respecify nat-to/binat-to");
2152				YYERROR;
2153			}
2154			filter_opts.nat.rdr = $2;
2155			filter_opts.nat.binat = 1;
2156			memcpy(&filter_opts.nat.pool_opts, &$3,
2157			    sizeof(filter_opts.nat.pool_opts));
2158			filter_opts.nat.pool_opts.staticport = 1;
2159		}
2160		| ROUTETO routespec pool_opts {
2161			filter_opts.route.host = $2;
2162			filter_opts.route.rt = PF_ROUTETO;
2163			filter_opts.route.pool_opts = $3.type | $3.opts;
2164			memcpy(&filter_opts.rroute.pool_opts, &$3,
2165			    sizeof(filter_opts.rroute.pool_opts));
2166			if ($3.key != NULL)
2167				filter_opts.route.key = $3.key;
2168		}
2169		| REPLYTO routespec pool_opts {
2170			filter_opts.route.host = $2;
2171			filter_opts.route.rt = PF_REPLYTO;
2172			filter_opts.route.pool_opts = $3.type | $3.opts;
2173			if ($3.key != NULL)
2174				filter_opts.route.key = $3.key;
2175		}
2176		| DUPTO routespec pool_opts {
2177			filter_opts.route.host = $2;
2178			filter_opts.route.rt = PF_DUPTO;
2179			filter_opts.route.pool_opts = $3.type | $3.opts;
2180			memcpy(&filter_opts.rroute.pool_opts, &$3,
2181			    sizeof(filter_opts.rroute.pool_opts));
2182			if ($3.key != NULL)
2183				filter_opts.route.key = $3.key;
2184		}
2185		| not RECEIVEDON if_item {
2186			if (filter_opts.rcv) {
2187				yyerror("cannot respecify received-on");
2188				YYERROR;
2189			}
2190			filter_opts.rcv = $3;
2191			filter_opts.rcv->not = $1;
2192		}
2193		| ONCE {
2194			filter_opts.marker |= FOM_ONCE;
2195		}
2196		| MAXPKTRATE NUMBER '/' NUMBER {
2197			if ($2 < 0 || $2 > UINT_MAX ||
2198			    $4 < 0 || $4 > UINT_MAX) {
2199				yyerror("only positive values permitted");
2200				YYERROR;
2201			}
2202			if (filter_opts.pktrate.limit) {
2203				yyerror("cannot respecify max-pkt-rate");
2204				YYERROR;
2205			}
2206			filter_opts.pktrate.limit = $2;
2207			filter_opts.pktrate.seconds = $4;
2208		}
2209		| filter_sets
2210		;
2211
2212filter_sets	: SET '(' filter_sets_l ')'	{ $$ = filter_opts; }
2213		| SET filter_set		{ $$ = filter_opts; }
2214		;
2215
2216filter_sets_l	: filter_sets_l comma filter_set
2217		| filter_set
2218		;
2219
2220filter_set	: prio {
2221			if (filter_opts.marker & FOM_SETPRIO) {
2222				yyerror("prio cannot be redefined");
2223				YYERROR;
2224			}
2225			filter_opts.marker |= FOM_SETPRIO;
2226			filter_opts.set_prio[0] = $1.b1;
2227			filter_opts.set_prio[1] = $1.b2;
2228		}
2229		| QUEUE qname	{
2230			if (filter_opts.queues.qname) {
2231				yyerror("queue cannot be redefined");
2232				YYERROR;
2233			}
2234			filter_opts.queues = $2;
2235		}
2236		| TOS tos {
2237			if (filter_opts.marker & FOM_SETTOS) {
2238				yyerror("tos cannot be respecified");
2239				YYERROR;
2240			}
2241			filter_opts.marker |= FOM_SETTOS;
2242			filter_opts.settos = $2;
2243		}
2244		;
2245
2246prio		: PRIO NUMBER {
2247			if ($2 < 0 || $2 > IFQ_MAXPRIO) {
2248				yyerror("prio must be 0 - %u", IFQ_MAXPRIO);
2249				YYERROR;
2250			}
2251			$$.b1 = $$.b2 = $2;
2252		}
2253		| PRIO '(' NUMBER comma NUMBER ')' {
2254			if ($3 < 0 || $3 > IFQ_MAXPRIO ||
2255			    $5 < 0 || $5 > IFQ_MAXPRIO) {
2256				yyerror("prio must be 0 - %u", IFQ_MAXPRIO);
2257				YYERROR;
2258			}
2259			$$.b1 = $3;
2260			$$.b2 = $5;
2261		}
2262		;
2263
2264probability	: STRING				{
2265			char	*e;
2266			double	 p = strtod($1, &e);
2267
2268			if (*e == '%') {
2269				p *= 0.01;
2270				e++;
2271			}
2272			if (*e) {
2273				yyerror("invalid probability: %s", $1);
2274				free($1);
2275				YYERROR;
2276			}
2277			free($1);
2278			$$ = p;
2279		}
2280		| NUMBER				{
2281			$$ = (double)$1;
2282		}
2283		;
2284
2285
2286action		: PASS			{ $$.b1 = PF_PASS; $$.b2 = $$.w = 0; }
2287		| MATCH			{ $$.b1 = PF_MATCH; $$.b2 = $$.w = 0; }
2288		| BLOCK blockspec	{ $$ = $2; $$.b1 = PF_DROP; }
2289		;
2290
2291blockspec	: /* empty */		{
2292			$$.b2 = blockpolicy;
2293			$$.w = returnicmpdefault;
2294			$$.w2 = returnicmp6default;
2295		}
2296		| DROP			{
2297			$$.b2 = PFRULE_DROP;
2298			$$.w = 0;
2299			$$.w2 = 0;
2300		}
2301		| RETURNRST		{
2302			$$.b2 = PFRULE_RETURNRST;
2303			$$.w = 0;
2304			$$.w2 = 0;
2305		}
2306		| RETURNRST '(' TTL NUMBER ')'	{
2307			if ($4 < 0 || $4 > 255) {
2308				yyerror("illegal ttl value %d", $4);
2309				YYERROR;
2310			}
2311			$$.b2 = PFRULE_RETURNRST;
2312			$$.w = $4;
2313			$$.w2 = 0;
2314		}
2315		| RETURNICMP		{
2316			$$.b2 = PFRULE_RETURNICMP;
2317			$$.w = returnicmpdefault;
2318			$$.w2 = returnicmp6default;
2319		}
2320		| RETURNICMP6		{
2321			$$.b2 = PFRULE_RETURNICMP;
2322			$$.w = returnicmpdefault;
2323			$$.w2 = returnicmp6default;
2324		}
2325		| RETURNICMP '(' reticmpspec ')'	{
2326			$$.b2 = PFRULE_RETURNICMP;
2327			$$.w = $3;
2328			$$.w2 = returnicmpdefault;
2329		}
2330		| RETURNICMP6 '(' reticmp6spec ')'	{
2331			$$.b2 = PFRULE_RETURNICMP;
2332			$$.w = returnicmpdefault;
2333			$$.w2 = $3;
2334		}
2335		| RETURNICMP '(' reticmpspec comma reticmp6spec ')' {
2336			$$.b2 = PFRULE_RETURNICMP;
2337			$$.w = $3;
2338			$$.w2 = $5;
2339		}
2340		| RETURN {
2341			$$.b2 = PFRULE_RETURN;
2342			$$.w = returnicmpdefault;
2343			$$.w2 = returnicmp6default;
2344		}
2345		;
2346
2347reticmpspec	: STRING			{
2348			if (!($$ = parseicmpspec($1, AF_INET))) {
2349				free($1);
2350				YYERROR;
2351			}
2352			free($1);
2353		}
2354		| NUMBER			{
2355			u_int8_t		icmptype;
2356
2357			if ($1 < 0 || $1 > 255) {
2358				yyerror("invalid icmp code %lu", $1);
2359				YYERROR;
2360			}
2361			icmptype = returnicmpdefault >> 8;
2362			$$ = (icmptype << 8 | $1);
2363		}
2364		;
2365
2366reticmp6spec	: STRING			{
2367			if (!($$ = parseicmpspec($1, AF_INET6))) {
2368				free($1);
2369				YYERROR;
2370			}
2371			free($1);
2372		}
2373		| NUMBER			{
2374			u_int8_t		icmptype;
2375
2376			if ($1 < 0 || $1 > 255) {
2377				yyerror("invalid icmp code %lu", $1);
2378				YYERROR;
2379			}
2380			icmptype = returnicmp6default >> 8;
2381			$$ = (icmptype << 8 | $1);
2382		}
2383		;
2384
2385dir		: /* empty */			{ $$ = PF_INOUT; }
2386		| IN				{ $$ = PF_IN; }
2387		| OUT				{ $$ = PF_OUT; }
2388		;
2389
2390quick		: /* empty */			{ $$.quick = 0; }
2391		| QUICK				{ $$.quick = 1; }
2392		;
2393
2394logquick	: /* empty */	{ $$.log = 0; $$.quick = 0; $$.logif = 0; }
2395		| log		{ $$ = $1; $$.quick = 0; }
2396		| QUICK		{ $$.quick = 1; $$.log = 0; $$.logif = 0; }
2397		| log QUICK	{ $$ = $1; $$.quick = 1; }
2398		| QUICK log	{ $$ = $2; $$.quick = 1; }
2399		;
2400
2401log		: LOG			{ $$.log = PF_LOG; $$.logif = 0; }
2402		| LOG '(' logopts ')'	{
2403			$$.log = PF_LOG | $3.log;
2404			$$.logif = $3.logif;
2405		}
2406		;
2407
2408logopts		: logopt			{ $$ = $1; }
2409		| logopts comma logopt		{
2410			$$.log = $1.log | $3.log;
2411			$$.logif = $3.logif;
2412			if ($$.logif == 0)
2413				$$.logif = $1.logif;
2414		}
2415		;
2416
2417logopt		: ALL		{ $$.log = PF_LOG_ALL; $$.logif = 0; }
2418		| MATCHES	{ $$.log = PF_LOG_MATCHES; $$.logif = 0; }
2419		| USER		{ $$.log = PF_LOG_SOCKET_LOOKUP; $$.logif = 0; }
2420		| GROUP		{ $$.log = PF_LOG_SOCKET_LOOKUP; $$.logif = 0; }
2421		| TO string	{
2422			const char	*errstr;
2423			u_int		 i;
2424
2425			$$.log = 0;
2426			if (strncmp($2, "pflog", 5)) {
2427				yyerror("%s: should be a pflog interface", $2);
2428				free($2);
2429				YYERROR;
2430			}
2431			i = strtonum($2 + 5, 0, 255, &errstr);
2432			if (errstr) {
2433				yyerror("%s: %s", $2, errstr);
2434				free($2);
2435				YYERROR;
2436			}
2437			free($2);
2438			$$.logif = i;
2439		}
2440		;
2441
2442interface	: /* empty */			{ $$ = NULL; }
2443		| ON if_item_not		{ $$ = $2; }
2444		| ON '{' optnl if_list '}'	{ $$ = $4; }
2445		;
2446
2447if_list		: if_item_not optnl		{ $$ = $1; }
2448		| if_list comma if_item_not optnl	{
2449			$1->tail->next = $3;
2450			$1->tail = $3;
2451			$$ = $1;
2452		}
2453		;
2454
2455if_item_not	: not if_item			{ $$ = $2; $$->not = $1; }
2456		;
2457
2458if_item		: STRING			{
2459			struct node_host	*n;
2460
2461			$$ = calloc(1, sizeof(struct node_if));
2462			if ($$ == NULL)
2463				err(1, "if_item: calloc");
2464			if (strlcpy($$->ifname, $1, sizeof($$->ifname)) >=
2465			    sizeof($$->ifname)) {
2466				free($1);
2467				free($$);
2468				yyerror("interface name too long");
2469				YYERROR;
2470			}
2471
2472			if ((n = ifa_exists($1)) != NULL)
2473				$$->ifa_flags = n->ifa_flags;
2474
2475			free($1);
2476			$$->not = 0;
2477			$$->next = NULL;
2478			$$->tail = $$;
2479		}
2480		| ANY				{
2481			$$ = calloc(1, sizeof(struct node_if));
2482			if ($$ == NULL)
2483				err(1, "if_item: calloc");
2484			strlcpy($$->ifname, "any", sizeof($$->ifname));
2485			$$->not = 0;
2486			$$->next = NULL;
2487			$$->tail = $$;
2488		}
2489		| RDOMAIN NUMBER		{
2490			if ($2 < 0 || $2 > RT_TABLEID_MAX) {
2491				yyerror("rdomain outside range");
2492				YYERROR;
2493			}
2494			$$ = calloc(1, sizeof(struct node_if));
2495			if ($$ == NULL)
2496				err(1, "if_item: calloc");
2497			$$->not = 0;
2498			$$->use_rdomain = 1;
2499			$$->rdomain = $2;
2500			$$->next = NULL;
2501			$$->tail = $$;
2502		}
2503		;
2504
2505af		: /* empty */			{ $$ = 0; }
2506		| INET				{ $$ = AF_INET; }
2507		| INET6				{ $$ = AF_INET6; }
2508		;
2509
2510proto		: /* empty */				{ $$ = NULL; }
2511		| PROTO proto_item			{ $$ = $2; }
2512		| PROTO '{' optnl proto_list '}'	{ $$ = $4; }
2513		;
2514
2515proto_list	: proto_item optnl		{ $$ = $1; }
2516		| proto_list comma proto_item optnl	{
2517			$1->tail->next = $3;
2518			$1->tail = $3;
2519			$$ = $1;
2520		}
2521		;
2522
2523proto_item	: protoval			{
2524			u_int8_t	pr;
2525
2526			pr = (u_int8_t)$1;
2527			if (pr == 0) {
2528				yyerror("proto 0 cannot be used");
2529				YYERROR;
2530			}
2531			$$ = calloc(1, sizeof(struct node_proto));
2532			if ($$ == NULL)
2533				err(1, "proto_item: calloc");
2534			$$->proto = pr;
2535			$$->next = NULL;
2536			$$->tail = $$;
2537		}
2538		;
2539
2540protoval	: STRING			{
2541			struct protoent	*p;
2542
2543			p = getprotobyname($1);
2544			if (p == NULL) {
2545				yyerror("unknown protocol %s", $1);
2546				free($1);
2547				YYERROR;
2548			}
2549			$$ = p->p_proto;
2550			free($1);
2551		}
2552		| NUMBER			{
2553			if ($1 < 0 || $1 > 255) {
2554				yyerror("protocol outside range");
2555				YYERROR;
2556			}
2557		}
2558		;
2559
2560fromto		: ALL				{
2561			$$.src.host = NULL;
2562			$$.src.port = NULL;
2563			$$.dst.host = NULL;
2564			$$.dst.port = NULL;
2565			$$.src_os = NULL;
2566		}
2567		| from os to			{
2568			$$.src = $1;
2569			$$.src_os = $2;
2570			$$.dst = $3;
2571		}
2572		;
2573
2574os		: /* empty */			{ $$ = NULL; }
2575		| OS xos			{ $$ = $2; }
2576		| OS '{' optnl os_list '}'	{ $$ = $4; }
2577		;
2578
2579xos		: STRING {
2580			$$ = calloc(1, sizeof(struct node_os));
2581			if ($$ == NULL)
2582				err(1, "os: calloc");
2583			$$->os = $1;
2584			$$->tail = $$;
2585		}
2586		;
2587
2588os_list		: xos optnl 			{ $$ = $1; }
2589		| os_list comma xos optnl	{
2590			$1->tail->next = $3;
2591			$1->tail = $3;
2592			$$ = $1;
2593		}
2594		;
2595
2596from		: /* empty */			{
2597			$$.host = NULL;
2598			$$.port = NULL;
2599		}
2600		| FROM ipportspec		{
2601			$$ = $2;
2602		}
2603		;
2604
2605to		: /* empty */			{
2606			$$.host = NULL;
2607			$$.port = NULL;
2608		}
2609		| TO ipportspec		{
2610			if (disallow_urpf_failed($2.host, "\"urpf-failed\" is "
2611			    "not permitted in a destination address"))
2612				YYERROR;
2613			$$ = $2;
2614		}
2615		;
2616
2617ipportspec	: ipspec			{
2618			$$.host = $1;
2619			$$.port = NULL;
2620		}
2621		| ipspec PORT portspec		{
2622			$$.host = $1;
2623			$$.port = $3;
2624		}
2625		| PORT portspec			{
2626			$$.host = NULL;
2627			$$.port = $2;
2628		}
2629		;
2630
2631optnl		: '\n' optnl
2632		| /* empty */
2633		;
2634
2635ipspec		: ANY				{ $$ = NULL; }
2636		| xhost				{ $$ = $1; }
2637		| '{' optnl host_list '}'	{ $$ = $3; }
2638		;
2639
2640
2641host_list	: ipspec optnl			{ $$ = $1; }
2642		| host_list comma ipspec optnl	{
2643			if ($1 == NULL) {
2644				freehostlist($3);
2645				$$ = $1;
2646			} else if ($3 == NULL) {
2647				freehostlist($1);
2648				$$ = $3;
2649			} else {
2650				$1->tail->next = $3;
2651				$1->tail = $3->tail;
2652				$$ = $1;
2653			}
2654		}
2655		;
2656
2657xhost		: not host			{
2658			struct node_host	*n;
2659
2660			for (n = $2; n != NULL; n = n->next)
2661				n->not = $1;
2662			$$ = $2;
2663		}
2664		| not NOROUTE			{
2665			$$ = calloc(1, sizeof(struct node_host));
2666			if ($$ == NULL)
2667				err(1, "xhost: calloc");
2668			$$->addr.type = PF_ADDR_NOROUTE;
2669			$$->next = NULL;
2670			$$->not = $1;
2671			$$->tail = $$;
2672		}
2673		| not URPFFAILED		{
2674			$$ = calloc(1, sizeof(struct node_host));
2675			if ($$ == NULL)
2676				err(1, "xhost: calloc");
2677			$$->addr.type = PF_ADDR_URPFFAILED;
2678			$$->next = NULL;
2679			$$->not = $1;
2680			$$->tail = $$;
2681		}
2682		;
2683
2684optweight	: WEIGHT NUMBER			{
2685			if ($2 < 1 || $2 > USHRT_MAX) {
2686				yyerror("weight out of range");
2687				YYERROR;
2688			}
2689			$$ = $2;
2690		}
2691		| /* empty */ { $$ = 0; }
2692		;
2693
2694host		: STRING			{
2695			if (($$ = host($1, pf->opts)) == NULL)	{
2696				/* error. "any" is handled elsewhere */
2697				free($1);
2698				yyerror("could not parse host specification");
2699				YYERROR;
2700			}
2701			free($1);
2702
2703		}
2704		| STRING '-' STRING		{
2705			struct node_host *b, *e;
2706
2707			if ((b = host($1, pf->opts)) == NULL ||
2708			    (e = host($3, pf->opts)) == NULL) {
2709				free($1);
2710				free($3);
2711				yyerror("could not parse host specification");
2712				YYERROR;
2713			}
2714			if (b->af != e->af ||
2715			    b->addr.type != PF_ADDR_ADDRMASK ||
2716			    e->addr.type != PF_ADDR_ADDRMASK ||
2717			    unmask(&b->addr.v.a.mask, b->af) !=
2718			    (b->af == AF_INET ? 32 : 128) ||
2719			    unmask(&e->addr.v.a.mask, e->af) !=
2720			    (e->af == AF_INET ? 32 : 128) ||
2721			    b->next != NULL || b->not ||
2722			    e->next != NULL || e->not) {
2723				free(b);
2724				free(e);
2725				free($1);
2726				free($3);
2727				yyerror("invalid address range");
2728				YYERROR;
2729			}
2730			memcpy(&b->addr.v.a.mask, &e->addr.v.a.addr,
2731			    sizeof(b->addr.v.a.mask));
2732			b->addr.type = PF_ADDR_RANGE;
2733			$$ = b;
2734			free(e);
2735			free($1);
2736			free($3);
2737		}
2738		| STRING '/' NUMBER		{
2739			char	*buf;
2740
2741			if (asprintf(&buf, "%s/%lld", $1, $3) == -1)
2742				err(1, "host: asprintf");
2743			free($1);
2744			if (($$ = host(buf, pf->opts)) == NULL)	{
2745				/* error. "any" is handled elsewhere */
2746				free(buf);
2747				yyerror("could not parse host specification");
2748				YYERROR;
2749			}
2750			free(buf);
2751		}
2752		| NUMBER '/' NUMBER		{
2753			char	*buf;
2754
2755			/* ie. for 10/8 parsing */
2756			if (asprintf(&buf, "%lld/%lld", $1, $3) == -1)
2757				err(1, "host: asprintf");
2758			if (($$ = host(buf, pf->opts)) == 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		| dynaddr
2767		| dynaddr '/' NUMBER		{
2768			struct node_host	*n;
2769
2770			if ($3 < 0 || $3 > 128) {
2771				yyerror("bit number too big");
2772				YYERROR;
2773			}
2774			$$ = $1;
2775			for (n = $1; n != NULL; n = n->next)
2776				set_ipmask(n, $3);
2777		}
2778		| '<' STRING '>'	{
2779			if (strlen($2) >= PF_TABLE_NAME_SIZE) {
2780				yyerror("table name '%s' too long", $2);
2781				free($2);
2782				YYERROR;
2783			}
2784			$$ = calloc(1, sizeof(struct node_host));
2785			if ($$ == NULL)
2786				err(1, "host: calloc");
2787			$$->addr.type = PF_ADDR_TABLE;
2788			if (strlcpy($$->addr.v.tblname, $2,
2789			    sizeof($$->addr.v.tblname)) >=
2790			    sizeof($$->addr.v.tblname))
2791				errx(1, "host: strlcpy");
2792			free($2);
2793			$$->next = NULL;
2794			$$->tail = $$;
2795		}
2796		| ROUTE	STRING		{
2797			$$ = calloc(1, sizeof(struct node_host));
2798			if ($$ == NULL) {
2799				free($2);
2800				err(1, "host: calloc");
2801			}
2802			$$->addr.type = PF_ADDR_RTLABEL;
2803			if (strlcpy($$->addr.v.rtlabelname, $2,
2804			    sizeof($$->addr.v.rtlabelname)) >=
2805			    sizeof($$->addr.v.rtlabelname)) {
2806				yyerror("route label too long, max %u chars",
2807				    sizeof($$->addr.v.rtlabelname) - 1);
2808				free($2);
2809				free($$);
2810				YYERROR;
2811			}
2812			$$->next = NULL;
2813			$$->tail = $$;
2814			free($2);
2815		}
2816		;
2817
2818number		: NUMBER
2819		| STRING		{
2820			u_long	ulval;
2821
2822			if (atoul($1, &ulval) == -1) {
2823				yyerror("%s is not a number", $1);
2824				free($1);
2825				YYERROR;
2826			} else
2827				$$ = ulval;
2828			free($1);
2829		}
2830		;
2831
2832dynaddr		: '(' STRING ')'		{
2833			int	 flags = 0;
2834			char	*p, *op;
2835
2836			op = $2;
2837			if (!isalpha((unsigned char)op[0])) {
2838				yyerror("invalid interface name '%s'", op);
2839				free(op);
2840				YYERROR;
2841			}
2842			while ((p = strrchr($2, ':')) != NULL) {
2843				if (!strcmp(p+1, "network"))
2844					flags |= PFI_AFLAG_NETWORK;
2845				else if (!strcmp(p+1, "broadcast"))
2846					flags |= PFI_AFLAG_BROADCAST;
2847				else if (!strcmp(p+1, "peer"))
2848					flags |= PFI_AFLAG_PEER;
2849				else if (!strcmp(p+1, "0"))
2850					flags |= PFI_AFLAG_NOALIAS;
2851				else {
2852					yyerror("interface %s has bad modifier",
2853					    $2);
2854					free(op);
2855					YYERROR;
2856				}
2857				*p = '\0';
2858			}
2859			if (flags & (flags - 1) & PFI_AFLAG_MODEMASK) {
2860				free(op);
2861				yyerror("illegal combination of "
2862				    "interface modifiers");
2863				YYERROR;
2864			}
2865			$$ = calloc(1, sizeof(struct node_host));
2866			if ($$ == NULL)
2867				err(1, "address: calloc");
2868			$$->af = 0;
2869			set_ipmask($$, 128);
2870			$$->addr.type = PF_ADDR_DYNIFTL;
2871			$$->addr.iflags = flags;
2872			if (strlcpy($$->addr.v.ifname, $2,
2873			    sizeof($$->addr.v.ifname)) >=
2874			    sizeof($$->addr.v.ifname)) {
2875				free(op);
2876				free($$);
2877				yyerror("interface name too long");
2878				YYERROR;
2879			}
2880			free(op);
2881			$$->next = NULL;
2882			$$->tail = $$;
2883		}
2884		;
2885
2886portspec	: port_item			{ $$ = $1; }
2887		| '{' optnl port_list '}'	{ $$ = $3; }
2888		;
2889
2890port_list	: port_item optnl		{ $$ = $1; }
2891		| port_list comma port_item optnl	{
2892			$1->tail->next = $3;
2893			$1->tail = $3;
2894			$$ = $1;
2895		}
2896		;
2897
2898port_item	: portrange			{
2899			$$ = calloc(1, sizeof(struct node_port));
2900			if ($$ == NULL)
2901				err(1, "port_item: calloc");
2902			$$->port[0] = $1.a;
2903			$$->port[1] = $1.b;
2904			if ($1.t)
2905				$$->op = PF_OP_RRG;
2906			else
2907				$$->op = PF_OP_EQ;
2908			$$->next = NULL;
2909			$$->tail = $$;
2910		}
2911		| unaryop portrange	{
2912			if ($2.t) {
2913				yyerror("':' cannot be used with an other "
2914				    "port operator");
2915				YYERROR;
2916			}
2917			$$ = calloc(1, sizeof(struct node_port));
2918			if ($$ == NULL)
2919				err(1, "port_item: calloc");
2920			$$->port[0] = $2.a;
2921			$$->port[1] = $2.b;
2922			$$->op = $1;
2923			$$->next = NULL;
2924			$$->tail = $$;
2925		}
2926		| portrange PORTBINARY portrange	{
2927			if ($1.t || $3.t) {
2928				yyerror("':' cannot be used with an other "
2929				    "port operator");
2930				YYERROR;
2931			}
2932			$$ = calloc(1, sizeof(struct node_port));
2933			if ($$ == NULL)
2934				err(1, "port_item: calloc");
2935			$$->port[0] = $1.a;
2936			$$->port[1] = $3.a;
2937			$$->op = $2;
2938			$$->next = NULL;
2939			$$->tail = $$;
2940		}
2941		;
2942
2943portplain	: numberstring			{
2944			if (parseport($1, &$$, 0) == -1) {
2945				free($1);
2946				YYERROR;
2947			}
2948			free($1);
2949		}
2950		;
2951
2952portrange	: numberstring			{
2953			if (parseport($1, &$$, PPORT_RANGE) == -1) {
2954				free($1);
2955				YYERROR;
2956			}
2957			free($1);
2958		}
2959		;
2960
2961uids		: uid_item			{ $$ = $1; }
2962		| '{' optnl uid_list '}'	{ $$ = $3; }
2963		;
2964
2965uid_list	: uid_item optnl		{ $$ = $1; }
2966		| uid_list comma uid_item optnl	{
2967			$1->tail->next = $3;
2968			$1->tail = $3;
2969			$$ = $1;
2970		}
2971		;
2972
2973uid_item	: uid				{
2974			$$ = calloc(1, sizeof(struct node_uid));
2975			if ($$ == NULL)
2976				err(1, "uid_item: calloc");
2977			$$->uid[0] = $1;
2978			$$->uid[1] = $1;
2979			$$->op = PF_OP_EQ;
2980			$$->next = NULL;
2981			$$->tail = $$;
2982		}
2983		| unaryop uid			{
2984			if ($2 == UID_MAX && $1 != PF_OP_EQ && $1 != PF_OP_NE) {
2985				yyerror("user unknown requires operator = or "
2986				    "!=");
2987				YYERROR;
2988			}
2989			$$ = calloc(1, sizeof(struct node_uid));
2990			if ($$ == NULL)
2991				err(1, "uid_item: calloc");
2992			$$->uid[0] = $2;
2993			$$->uid[1] = $2;
2994			$$->op = $1;
2995			$$->next = NULL;
2996			$$->tail = $$;
2997		}
2998		| uid PORTBINARY uid		{
2999			if ($1 == UID_MAX || $3 == UID_MAX) {
3000				yyerror("user unknown requires operator = or "
3001				    "!=");
3002				YYERROR;
3003			}
3004			$$ = calloc(1, sizeof(struct node_uid));
3005			if ($$ == NULL)
3006				err(1, "uid_item: calloc");
3007			$$->uid[0] = $1;
3008			$$->uid[1] = $3;
3009			$$->op = $2;
3010			$$->next = NULL;
3011			$$->tail = $$;
3012		}
3013		;
3014
3015uid		: STRING			{
3016			if (!strcmp($1, "unknown"))
3017				$$ = UID_MAX;
3018			else {
3019				struct passwd	*pw;
3020
3021				if ((pw = getpwnam($1)) == NULL) {
3022					yyerror("unknown user %s", $1);
3023					free($1);
3024					YYERROR;
3025				}
3026				$$ = pw->pw_uid;
3027			}
3028			free($1);
3029		}
3030		| NUMBER			{
3031			if ($1 < 0 || $1 >= UID_MAX) {
3032				yyerror("illegal uid value %lu", $1);
3033				YYERROR;
3034			}
3035			$$ = $1;
3036		}
3037		;
3038
3039gids		: gid_item			{ $$ = $1; }
3040		| '{' optnl gid_list '}'	{ $$ = $3; }
3041		;
3042
3043gid_list	: gid_item optnl		{ $$ = $1; }
3044		| gid_list comma gid_item optnl	{
3045			$1->tail->next = $3;
3046			$1->tail = $3;
3047			$$ = $1;
3048		}
3049		;
3050
3051gid_item	: gid				{
3052			$$ = calloc(1, sizeof(struct node_gid));
3053			if ($$ == NULL)
3054				err(1, "gid_item: calloc");
3055			$$->gid[0] = $1;
3056			$$->gid[1] = $1;
3057			$$->op = PF_OP_EQ;
3058			$$->next = NULL;
3059			$$->tail = $$;
3060		}
3061		| unaryop gid			{
3062			if ($2 == GID_MAX && $1 != PF_OP_EQ && $1 != PF_OP_NE) {
3063				yyerror("group unknown requires operator = or "
3064				    "!=");
3065				YYERROR;
3066			}
3067			$$ = calloc(1, sizeof(struct node_gid));
3068			if ($$ == NULL)
3069				err(1, "gid_item: calloc");
3070			$$->gid[0] = $2;
3071			$$->gid[1] = $2;
3072			$$->op = $1;
3073			$$->next = NULL;
3074			$$->tail = $$;
3075		}
3076		| gid PORTBINARY gid		{
3077			if ($1 == GID_MAX || $3 == GID_MAX) {
3078				yyerror("group unknown requires operator = or "
3079				    "!=");
3080				YYERROR;
3081			}
3082			$$ = calloc(1, sizeof(struct node_gid));
3083			if ($$ == NULL)
3084				err(1, "gid_item: calloc");
3085			$$->gid[0] = $1;
3086			$$->gid[1] = $3;
3087			$$->op = $2;
3088			$$->next = NULL;
3089			$$->tail = $$;
3090		}
3091		;
3092
3093gid		: STRING			{
3094			if (!strcmp($1, "unknown"))
3095				$$ = GID_MAX;
3096			else {
3097				struct group	*grp;
3098
3099				if ((grp = getgrnam($1)) == NULL) {
3100					yyerror("unknown group %s", $1);
3101					free($1);
3102					YYERROR;
3103				}
3104				$$ = grp->gr_gid;
3105			}
3106			free($1);
3107		}
3108		| NUMBER			{
3109			if ($1 < 0 || $1 >= GID_MAX) {
3110				yyerror("illegal gid value %lu", $1);
3111				YYERROR;
3112			}
3113			$$ = $1;
3114		}
3115		;
3116
3117flag		: STRING			{
3118			int	f;
3119
3120			if ((f = parse_flags($1)) < 0) {
3121				yyerror("bad flags %s", $1);
3122				free($1);
3123				YYERROR;
3124			}
3125			free($1);
3126			$$.b1 = f;
3127		}
3128		;
3129
3130flags		: FLAGS flag '/' flag	{ $$.b1 = $2.b1; $$.b2 = $4.b1; }
3131		| FLAGS '/' flag	{ $$.b1 = 0; $$.b2 = $3.b1; }
3132		| FLAGS ANY		{ $$.b1 = 0; $$.b2 = 0; }
3133		;
3134
3135icmpspec	: ICMPTYPE icmp_item			{ $$ = $2; }
3136		| ICMPTYPE '{' optnl icmp_list '}'	{ $$ = $4; }
3137		| ICMP6TYPE icmp6_item			{ $$ = $2; }
3138		| ICMP6TYPE '{' optnl icmp6_list '}'	{ $$ = $4; }
3139		;
3140
3141icmp_list	: icmp_item optnl		{ $$ = $1; }
3142		| icmp_list comma icmp_item optnl {
3143			$1->tail->next = $3;
3144			$1->tail = $3;
3145			$$ = $1;
3146		}
3147		;
3148
3149icmp6_list	: icmp6_item optnl		{ $$ = $1; }
3150		| icmp6_list comma icmp6_item optnl {
3151			$1->tail->next = $3;
3152			$1->tail = $3;
3153			$$ = $1;
3154		}
3155		;
3156
3157icmp_item	: icmptype		{
3158			$$ = calloc(1, sizeof(struct node_icmp));
3159			if ($$ == NULL)
3160				err(1, "icmp_item: calloc");
3161			$$->type = $1;
3162			$$->code = 0;
3163			$$->proto = IPPROTO_ICMP;
3164			$$->next = NULL;
3165			$$->tail = $$;
3166		}
3167		| icmptype CODE STRING	{
3168			const struct icmpcodeent	*p;
3169
3170			if ((p = geticmpcodebyname($1-1, $3, AF_INET)) == NULL) {
3171				yyerror("unknown icmp-code %s", $3);
3172				free($3);
3173				YYERROR;
3174			}
3175
3176			free($3);
3177			$$ = calloc(1, sizeof(struct node_icmp));
3178			if ($$ == NULL)
3179				err(1, "icmp_item: calloc");
3180			$$->type = $1;
3181			$$->code = p->code + 1;
3182			$$->proto = IPPROTO_ICMP;
3183			$$->next = NULL;
3184			$$->tail = $$;
3185		}
3186		| icmptype CODE NUMBER	{
3187			if ($3 < 0 || $3 > 255) {
3188				yyerror("illegal icmp-code %lu", $3);
3189				YYERROR;
3190			}
3191			$$ = calloc(1, sizeof(struct node_icmp));
3192			if ($$ == NULL)
3193				err(1, "icmp_item: calloc");
3194			$$->type = $1;
3195			$$->code = $3 + 1;
3196			$$->proto = IPPROTO_ICMP;
3197			$$->next = NULL;
3198			$$->tail = $$;
3199		}
3200		;
3201
3202icmp6_item	: icmp6type		{
3203			$$ = calloc(1, sizeof(struct node_icmp));
3204			if ($$ == NULL)
3205				err(1, "icmp_item: calloc");
3206			$$->type = $1;
3207			$$->code = 0;
3208			$$->proto = IPPROTO_ICMPV6;
3209			$$->next = NULL;
3210			$$->tail = $$;
3211		}
3212		| icmp6type CODE STRING	{
3213			const struct icmpcodeent	*p;
3214
3215			if ((p = geticmpcodebyname($1-1, $3, AF_INET6)) == NULL) {
3216				yyerror("unknown icmp6-code %s", $3);
3217				free($3);
3218				YYERROR;
3219			}
3220			free($3);
3221
3222			$$ = calloc(1, sizeof(struct node_icmp));
3223			if ($$ == NULL)
3224				err(1, "icmp_item: calloc");
3225			$$->type = $1;
3226			$$->code = p->code + 1;
3227			$$->proto = IPPROTO_ICMPV6;
3228			$$->next = NULL;
3229			$$->tail = $$;
3230		}
3231		| icmp6type CODE NUMBER	{
3232			if ($3 < 0 || $3 > 255) {
3233				yyerror("illegal icmp-code %lu", $3);
3234				YYERROR;
3235			}
3236			$$ = calloc(1, sizeof(struct node_icmp));
3237			if ($$ == NULL)
3238				err(1, "icmp_item: calloc");
3239			$$->type = $1;
3240			$$->code = $3 + 1;
3241			$$->proto = IPPROTO_ICMPV6;
3242			$$->next = NULL;
3243			$$->tail = $$;
3244		}
3245		;
3246
3247icmptype	: STRING			{
3248			const struct icmptypeent	*p;
3249
3250			if ((p = geticmptypebyname($1, AF_INET)) == NULL) {
3251				yyerror("unknown icmp-type %s", $1);
3252				free($1);
3253				YYERROR;
3254			}
3255			$$ = p->type + 1;
3256			free($1);
3257		}
3258		| NUMBER			{
3259			if ($1 < 0 || $1 > 255) {
3260				yyerror("illegal icmp-type %lu", $1);
3261				YYERROR;
3262			}
3263			$$ = $1 + 1;
3264		}
3265		;
3266
3267icmp6type	: STRING			{
3268			const struct icmptypeent	*p;
3269
3270			if ((p = geticmptypebyname($1, AF_INET6)) ==
3271			    NULL) {
3272				yyerror("unknown icmp6-type %s", $1);
3273				free($1);
3274				YYERROR;
3275			}
3276			$$ = p->type + 1;
3277			free($1);
3278		}
3279		| NUMBER			{
3280			if ($1 < 0 || $1 > 255) {
3281				yyerror("illegal icmp6-type %lu", $1);
3282				YYERROR;
3283			}
3284			$$ = $1 + 1;
3285		}
3286		;
3287
3288tos	: STRING			{
3289			int val;
3290			char *end;
3291
3292			if (map_tos($1, &val))
3293				$$ = val;
3294			else if ($1[0] == '0' && $1[1] == 'x') {
3295				errno = 0;
3296				$$ = strtoul($1, &end, 16);
3297				if (errno || *end != '\0')
3298					$$ = 256;
3299			} else
3300				$$ = 256;		/* flag bad argument */
3301			if ($$ < 0 || $$ > 255) {
3302				yyerror("illegal tos value %s", $1);
3303				free($1);
3304				YYERROR;
3305			}
3306			free($1);
3307		}
3308		| NUMBER			{
3309			$$ = $1;
3310			if ($$ < 0 || $$ > 255) {
3311				yyerror("illegal tos value %lld", $1);
3312				YYERROR;
3313			}
3314		}
3315		;
3316
3317sourcetrack	: /* empty */		{ $$ = PF_SRCTRACK; }
3318		| GLOBAL		{ $$ = PF_SRCTRACK_GLOBAL; }
3319		| RULE			{ $$ = PF_SRCTRACK_RULE; }
3320		;
3321
3322statelock	: IFBOUND {
3323			$$ = PFRULE_IFBOUND;
3324		}
3325		| FLOATING {
3326			$$ = 0;
3327		}
3328		;
3329
3330keep		: NO STATE			{
3331			$$.action = 0;
3332			$$.options = NULL;
3333		}
3334		| KEEP STATE state_opt_spec	{
3335			$$.action = PF_STATE_NORMAL;
3336			$$.options = $3;
3337		}
3338		| MODULATE STATE state_opt_spec {
3339			$$.action = PF_STATE_MODULATE;
3340			$$.options = $3;
3341		}
3342		| SYNPROXY STATE state_opt_spec {
3343			$$.action = PF_STATE_SYNPROXY;
3344			$$.options = $3;
3345		}
3346		;
3347
3348flush		: /* empty */			{ $$ = 0; }
3349		| FLUSH				{ $$ = PF_FLUSH; }
3350		| FLUSH GLOBAL			{
3351			$$ = PF_FLUSH | PF_FLUSH_GLOBAL;
3352		}
3353		;
3354
3355state_opt_spec	: '(' state_opt_list ')'	{ $$ = $2; }
3356		| /* empty */			{ $$ = NULL; }
3357		;
3358
3359state_opt_list	: state_opt_item		{ $$ = $1; }
3360		| state_opt_list comma state_opt_item {
3361			$1->tail->next = $3;
3362			$1->tail = $3;
3363			$$ = $1;
3364		}
3365		;
3366
3367state_opt_item	: MAXIMUM NUMBER		{
3368			if ($2 < 0 || $2 > UINT_MAX) {
3369				yyerror("only positive values permitted");
3370				YYERROR;
3371			}
3372			$$ = calloc(1, sizeof(struct node_state_opt));
3373			if ($$ == NULL)
3374				err(1, "state_opt_item: calloc");
3375			$$->type = PF_STATE_OPT_MAX;
3376			$$->data.max_states = $2;
3377			$$->next = NULL;
3378			$$->tail = $$;
3379		}
3380		| NOSYNC				{
3381			$$ = calloc(1, sizeof(struct node_state_opt));
3382			if ($$ == NULL)
3383				err(1, "state_opt_item: calloc");
3384			$$->type = PF_STATE_OPT_NOSYNC;
3385			$$->next = NULL;
3386			$$->tail = $$;
3387		}
3388		| MAXSRCSTATES NUMBER			{
3389			if ($2 < 0 || $2 > UINT_MAX) {
3390				yyerror("only positive values permitted");
3391				YYERROR;
3392			}
3393			$$ = calloc(1, sizeof(struct node_state_opt));
3394			if ($$ == NULL)
3395				err(1, "state_opt_item: calloc");
3396			$$->type = PF_STATE_OPT_MAX_SRC_STATES;
3397			$$->data.max_src_states = $2;
3398			$$->next = NULL;
3399			$$->tail = $$;
3400		}
3401		| MAXSRCCONN NUMBER			{
3402			if ($2 < 0 || $2 > UINT_MAX) {
3403				yyerror("only positive values permitted");
3404				YYERROR;
3405			}
3406			$$ = calloc(1, sizeof(struct node_state_opt));
3407			if ($$ == NULL)
3408				err(1, "state_opt_item: calloc");
3409			$$->type = PF_STATE_OPT_MAX_SRC_CONN;
3410			$$->data.max_src_conn = $2;
3411			$$->next = NULL;
3412			$$->tail = $$;
3413		}
3414		| MAXSRCCONNRATE NUMBER '/' NUMBER	{
3415			if ($2 < 0 || $2 > UINT_MAX ||
3416			    $4 < 0 || $4 > UINT_MAX) {
3417				yyerror("only positive values permitted");
3418				YYERROR;
3419			}
3420			$$ = calloc(1, sizeof(struct node_state_opt));
3421			if ($$ == NULL)
3422				err(1, "state_opt_item: calloc");
3423			$$->type = PF_STATE_OPT_MAX_SRC_CONN_RATE;
3424			$$->data.max_src_conn_rate.limit = $2;
3425			$$->data.max_src_conn_rate.seconds = $4;
3426			$$->next = NULL;
3427			$$->tail = $$;
3428		}
3429		| OVERLOAD '<' STRING '>' flush		{
3430			if (strlen($3) >= PF_TABLE_NAME_SIZE) {
3431				yyerror("table name '%s' too long", $3);
3432				free($3);
3433				YYERROR;
3434			}
3435			$$ = calloc(1, sizeof(struct node_state_opt));
3436			if ($$ == NULL)
3437				err(1, "state_opt_item: calloc");
3438			if (strlcpy($$->data.overload.tblname, $3,
3439			    PF_TABLE_NAME_SIZE) >= PF_TABLE_NAME_SIZE)
3440				errx(1, "state_opt_item: strlcpy");
3441			free($3);
3442			$$->type = PF_STATE_OPT_OVERLOAD;
3443			$$->data.overload.flush = $5;
3444			$$->next = NULL;
3445			$$->tail = $$;
3446		}
3447		| MAXSRCNODES NUMBER			{
3448			if ($2 < 0 || $2 > UINT_MAX) {
3449				yyerror("only positive values permitted");
3450				YYERROR;
3451			}
3452			$$ = calloc(1, sizeof(struct node_state_opt));
3453			if ($$ == NULL)
3454				err(1, "state_opt_item: calloc");
3455			$$->type = PF_STATE_OPT_MAX_SRC_NODES;
3456			$$->data.max_src_nodes = $2;
3457			$$->next = NULL;
3458			$$->tail = $$;
3459		}
3460		| SOURCETRACK sourcetrack {
3461			$$ = calloc(1, sizeof(struct node_state_opt));
3462			if ($$ == NULL)
3463				err(1, "state_opt_item: calloc");
3464			$$->type = PF_STATE_OPT_SRCTRACK;
3465			$$->data.src_track = $2;
3466			$$->next = NULL;
3467			$$->tail = $$;
3468		}
3469		| statelock {
3470			$$ = calloc(1, sizeof(struct node_state_opt));
3471			if ($$ == NULL)
3472				err(1, "state_opt_item: calloc");
3473			$$->type = PF_STATE_OPT_STATELOCK;
3474			$$->data.statelock = $1;
3475			$$->next = NULL;
3476			$$->tail = $$;
3477		}
3478		| SLOPPY {
3479			$$ = calloc(1, sizeof(struct node_state_opt));
3480			if ($$ == NULL)
3481				err(1, "state_opt_item: calloc");
3482			$$->type = PF_STATE_OPT_SLOPPY;
3483			$$->next = NULL;
3484			$$->tail = $$;
3485		}
3486		| PFLOW {
3487			$$ = calloc(1, sizeof(struct node_state_opt));
3488			if ($$ == NULL)
3489				err(1, "state_opt_item: calloc");
3490			$$->type = PF_STATE_OPT_PFLOW;
3491			$$->next = NULL;
3492			$$->tail = $$;
3493		}
3494		| STRING NUMBER			{
3495			int	i;
3496
3497			if ($2 < 0 || $2 > UINT_MAX) {
3498				yyerror("only positive values permitted");
3499				YYERROR;
3500			}
3501			for (i = 0; pf_timeouts[i].name &&
3502			    strcmp(pf_timeouts[i].name, $1); ++i)
3503				;	/* nothing */
3504			if (!pf_timeouts[i].name) {
3505				yyerror("illegal timeout name %s", $1);
3506				free($1);
3507				YYERROR;
3508			}
3509			if (strchr(pf_timeouts[i].name, '.') == NULL) {
3510				yyerror("illegal state timeout %s", $1);
3511				free($1);
3512				YYERROR;
3513			}
3514			free($1);
3515			$$ = calloc(1, sizeof(struct node_state_opt));
3516			if ($$ == NULL)
3517				err(1, "state_opt_item: calloc");
3518			$$->type = PF_STATE_OPT_TIMEOUT;
3519			$$->data.timeout.number = pf_timeouts[i].timeout;
3520			$$->data.timeout.seconds = $2;
3521			$$->next = NULL;
3522			$$->tail = $$;
3523		}
3524		;
3525
3526label		: STRING			{
3527			$$ = $1;
3528		}
3529		;
3530
3531qname		: STRING				{
3532			struct pfctl_qsitem *qsi;
3533
3534			if ((qsi = pfctl_find_queue($1, &qspecs)) == NULL) {
3535				yyerror("queue %s is not defined", $1);
3536				YYERROR;
3537			}
3538			$$.qname = $1;
3539			$$.pqname = NULL;
3540		}
3541		| '(' STRING ')'			{
3542			struct pfctl_qsitem *qsi;
3543
3544			if ((qsi = pfctl_find_queue($2, &qspecs)) == NULL) {
3545				yyerror("queue %s is not defined", $2);
3546				YYERROR;
3547			}
3548			$$.qname = $2;
3549			$$.pqname = NULL;
3550		}
3551		| '(' STRING comma STRING ')'	{
3552			struct pfctl_qsitem *qsi, *pqsi;
3553
3554			if ((qsi = pfctl_find_queue($2, &qspecs)) == NULL) {
3555				yyerror("queue %s is not defined", $2);
3556				YYERROR;
3557			}
3558			if ((pqsi = pfctl_find_queue($4, &qspecs)) == NULL) {
3559				yyerror("queue %s is not defined", $4);
3560				YYERROR;
3561			}
3562			$$.qname = $2;
3563			$$.pqname = $4;
3564		}
3565		;
3566
3567portstar	: numberstring			{
3568			if (parseport($1, &$$, PPORT_RANGE|PPORT_STAR) == -1) {
3569				free($1);
3570				YYERROR;
3571			}
3572			free($1);
3573		}
3574		;
3575
3576redirspec	: host optweight		{
3577			if ($2 > 0) {
3578				struct node_host	*n;
3579				for (n = $1; n != NULL; n = n->next)
3580					n->weight = $2;
3581			}
3582			$$ = $1;
3583		}
3584		| '{' optnl redir_host_list '}'	{ $$ = $3; }
3585		;
3586
3587redir_host_list	: host optweight optnl			{
3588			if ($1->addr.type != PF_ADDR_ADDRMASK) {
3589				free($1);
3590				yyerror("only addresses can be listed for "
3591				    "redirection pools ");
3592				YYERROR;
3593			}
3594			if ($2 > 0) {
3595				struct node_host	*n;
3596				for (n = $1; n != NULL; n = n->next)
3597					n->weight = $2;
3598			}
3599			$$ = $1;
3600		}
3601		| redir_host_list comma host optweight optnl {
3602			$1->tail->next = $3;
3603			$1->tail = $3->tail;
3604			if ($4 > 0) {
3605				struct node_host	*n;
3606				for (n = $3; n != NULL; n = n->next)
3607					n->weight = $4;
3608			}
3609			$$ = $1;
3610		}
3611		;
3612
3613redirpool	: redirspec		{
3614			$$ = calloc(1, sizeof(struct redirection));
3615			if ($$ == NULL)
3616				err(1, "redirection: calloc");
3617			$$->host = $1;
3618			$$->rport.a = $$->rport.b = $$->rport.t = 0;
3619		}
3620		| redirspec PORT portstar	{
3621			$$ = calloc(1, sizeof(struct redirection));
3622			if ($$ == NULL)
3623				err(1, "redirection: calloc");
3624			$$->host = $1;
3625			$$->rport = $3;
3626		}
3627		;
3628
3629hashkey		: /* empty */
3630		{
3631			$$ = calloc(1, sizeof(struct pf_poolhashkey));
3632			if ($$ == NULL)
3633				err(1, "hashkey: calloc");
3634			$$->key32[0] = arc4random();
3635			$$->key32[1] = arc4random();
3636			$$->key32[2] = arc4random();
3637			$$->key32[3] = arc4random();
3638		}
3639		| string
3640		{
3641			if (!strncmp($1, "0x", 2)) {
3642				if (strlen($1) != 34) {
3643					free($1);
3644					yyerror("hex key must be 128 bits "
3645						"(32 hex digits) long");
3646					YYERROR;
3647				}
3648				$$ = calloc(1, sizeof(struct pf_poolhashkey));
3649				if ($$ == NULL)
3650					err(1, "hashkey: calloc");
3651
3652				if (sscanf($1, "0x%8x%8x%8x%8x",
3653				    &$$->key32[0], &$$->key32[1],
3654				    &$$->key32[2], &$$->key32[3]) != 4) {
3655					free($$);
3656					free($1);
3657					yyerror("invalid hex key");
3658					YYERROR;
3659				}
3660			} else {
3661				MD5_CTX	context;
3662
3663				$$ = calloc(1, sizeof(struct pf_poolhashkey));
3664				if ($$ == NULL)
3665					err(1, "hashkey: calloc");
3666				MD5Init(&context);
3667				MD5Update(&context, (unsigned char *)$1,
3668				    strlen($1));
3669				MD5Final((unsigned char *)$$, &context);
3670				HTONL($$->key32[0]);
3671				HTONL($$->key32[1]);
3672				HTONL($$->key32[2]);
3673				HTONL($$->key32[3]);
3674			}
3675			free($1);
3676		}
3677		;
3678
3679pool_opts	:	{ bzero(&pool_opts, sizeof pool_opts); }
3680		    pool_opts_l
3681			{ $$ = pool_opts; }
3682		| /* empty */	{
3683			bzero(&pool_opts, sizeof pool_opts);
3684			$$ = pool_opts;
3685		}
3686		;
3687
3688pool_opts_l	: pool_opts_l pool_opt
3689		| pool_opt
3690		;
3691
3692pool_opt	: BITMASK	{
3693			if (pool_opts.type) {
3694				yyerror("pool type cannot be redefined");
3695				YYERROR;
3696			}
3697			pool_opts.type =  PF_POOL_BITMASK;
3698		}
3699		| RANDOM	{
3700			if (pool_opts.type) {
3701				yyerror("pool type cannot be redefined");
3702				YYERROR;
3703			}
3704			pool_opts.type = PF_POOL_RANDOM;
3705		}
3706		| SOURCEHASH hashkey {
3707			if (pool_opts.type) {
3708				yyerror("pool type cannot be redefined");
3709				YYERROR;
3710			}
3711			pool_opts.type = PF_POOL_SRCHASH;
3712			pool_opts.key = $2;
3713		}
3714		| ROUNDROBIN	{
3715			if (pool_opts.type) {
3716				yyerror("pool type cannot be redefined");
3717				YYERROR;
3718			}
3719			pool_opts.type = PF_POOL_ROUNDROBIN;
3720		}
3721		| LEASTSTATES	{
3722			if (pool_opts.type) {
3723				yyerror("pool type cannot be redefined");
3724				YYERROR;
3725			}
3726			pool_opts.type = PF_POOL_LEASTSTATES;
3727		}
3728		| STATICPORT	{
3729			if (pool_opts.staticport) {
3730				yyerror("static-port cannot be redefined");
3731				YYERROR;
3732			}
3733			pool_opts.staticport = 1;
3734		}
3735		| STICKYADDRESS	{
3736			if (filter_opts.marker & POM_STICKYADDRESS) {
3737				yyerror("sticky-address cannot be redefined");
3738				YYERROR;
3739			}
3740			pool_opts.marker |= POM_STICKYADDRESS;
3741			pool_opts.opts |= PF_POOL_STICKYADDR;
3742		}
3743		;
3744
3745route_host	: STRING			{
3746			/* try to find @if0 address specs */
3747			if (strrchr($1, '@') != NULL) {
3748				if (($$ = host($1, pf->opts)) == NULL)	{
3749					yyerror("invalid host for route spec");
3750					YYERROR;
3751				}
3752				free($1);
3753			} else {
3754				$$ = calloc(1, sizeof(struct node_host));
3755				if ($$ == NULL)
3756					err(1, "route_host: calloc");
3757				$$->ifname = $1;
3758				$$->addr.type = PF_ADDR_NONE;
3759				set_ipmask($$, 128);
3760				$$->next = NULL;
3761				$$->tail = $$;
3762			}
3763		}
3764		| STRING '/' STRING 		{
3765			char	*buf;
3766
3767			if (asprintf(&buf, "%s/%s", $1, $3) == -1)
3768				err(1, "host: asprintf");
3769			free($1);
3770			if (($$ = host(buf, pf->opts)) == NULL)	{
3771				/* error. "any" is handled elsewhere */
3772				free(buf);
3773				yyerror("could not parse host specification");
3774				YYERROR;
3775			}
3776			free(buf);
3777		}
3778		| '<' STRING '>'	{
3779			if (strlen($2) >= PF_TABLE_NAME_SIZE) {
3780				yyerror("table name '%s' too long", $2);
3781				free($2);
3782				YYERROR;
3783			}
3784			$$ = calloc(1, sizeof(struct node_host));
3785			if ($$ == NULL)
3786				err(1, "host: calloc");
3787			$$->addr.type = PF_ADDR_TABLE;
3788			if (strlcpy($$->addr.v.tblname, $2,
3789			    sizeof($$->addr.v.tblname)) >=
3790			    sizeof($$->addr.v.tblname))
3791				errx(1, "host: strlcpy");
3792			free($2);
3793			$$->next = NULL;
3794			$$->tail = $$;
3795		}
3796		| dynaddr '/' NUMBER		{
3797			struct node_host	*n;
3798
3799			if ($3 < 0 || $3 > 128) {
3800				yyerror("bit number too big");
3801				YYERROR;
3802			}
3803			$$ = $1;
3804			for (n = $1; n != NULL; n = n->next)
3805				set_ipmask(n, $3);
3806		}
3807		| '(' STRING host ')'		{
3808			struct node_host	*n;
3809
3810			$$ = $3;
3811			/* XXX check masks, only full mask should be allowed */
3812			for (n = $3; n != NULL; n = n->next) {
3813				if ($$->ifname) {
3814					yyerror("cannot specify interface twice "
3815					    "in route spec");
3816					YYERROR;
3817				}
3818				if (($$->ifname = strdup($2)) == NULL)
3819					errx(1, "host: strdup");
3820			}
3821			free($2);
3822		}
3823		;
3824
3825route_host_list	: route_host optweight optnl		{
3826			if ($2 > 0) {
3827				struct node_host	*n;
3828				for (n = $1; n != NULL; n = n->next)
3829					n->weight = $2;
3830			}
3831			$$ = $1;
3832		}
3833		| route_host_list comma route_host optweight optnl {
3834			if ($1->af == 0)
3835				$1->af = $3->af;
3836			if ($1->af != $3->af) {
3837				yyerror("all pool addresses must be in the "
3838				    "same address family");
3839				YYERROR;
3840			}
3841			$1->tail->next = $3;
3842			$1->tail = $3->tail;
3843			if ($4 > 0) {
3844				struct node_host	*n;
3845				for (n = $3; n != NULL; n = n->next)
3846					n->weight = $4;
3847			}
3848			$$ = $1;
3849		}
3850		;
3851
3852routespec	: route_host optweight			{
3853			if ($2 > 0) {
3854				struct node_host	*n;
3855				for (n = $1; n != NULL; n = n->next)
3856					n->weight = $2;
3857			}
3858			$$ = $1;
3859		}
3860		| '{' optnl route_host_list '}'	{ $$ = $3; }
3861		;
3862
3863timeout_spec	: STRING NUMBER
3864		{
3865			if ($2 < 0 || $2 > UINT_MAX) {
3866				yyerror("only positive values permitted");
3867				YYERROR;
3868			}
3869			if (pfctl_set_timeout(pf, $1, $2, 0) != 0) {
3870				yyerror("unknown timeout %s", $1);
3871				free($1);
3872				YYERROR;
3873			}
3874			free($1);
3875		}
3876		;
3877
3878timeout_list	: timeout_list comma timeout_spec optnl
3879		| timeout_spec optnl
3880		;
3881
3882limit_spec	: STRING NUMBER
3883		{
3884			if ($2 < 0 || $2 > UINT_MAX) {
3885				yyerror("only positive values permitted");
3886				YYERROR;
3887			}
3888			if (pfctl_set_limit(pf, $1, $2) != 0) {
3889				yyerror("unable to set limit %s %u", $1, $2);
3890				free($1);
3891				YYERROR;
3892			}
3893			free($1);
3894		}
3895		;
3896
3897limit_list	: limit_list comma limit_spec optnl
3898		| limit_spec optnl
3899		;
3900
3901comma		: ','
3902		| /* empty */
3903		;
3904
3905yesno		: NO			{ $$ = 0; }
3906		| STRING		{
3907			if (!strcmp($1, "yes"))
3908				$$ = 1;
3909			else {
3910				yyerror("invalid value '%s', expected 'yes' "
3911				    "or 'no'", $1);
3912				free($1);
3913				YYERROR;
3914			}
3915			free($1);
3916		}
3917		;
3918
3919unaryop		: '='		{ $$ = PF_OP_EQ; }
3920		| NE		{ $$ = PF_OP_NE; }
3921		| LE		{ $$ = PF_OP_LE; }
3922		| '<'		{ $$ = PF_OP_LT; }
3923		| GE		{ $$ = PF_OP_GE; }
3924		| '>'		{ $$ = PF_OP_GT; }
3925		;
3926
3927%%
3928
3929int
3930yyerror(const char *fmt, ...)
3931{
3932	va_list		 ap;
3933
3934	file->errors++;
3935	va_start(ap, fmt);
3936	fprintf(stderr, "%s:%d: ", file->name, yylval.lineno);
3937	vfprintf(stderr, fmt, ap);
3938	fprintf(stderr, "\n");
3939	va_end(ap);
3940	return (0);
3941}
3942
3943int
3944disallow_table(struct node_host *h, const char *fmt)
3945{
3946	for (; h != NULL; h = h->next)
3947		if (h->addr.type == PF_ADDR_TABLE) {
3948			yyerror(fmt, h->addr.v.tblname);
3949			return (1);
3950		}
3951	return (0);
3952}
3953
3954int
3955disallow_urpf_failed(struct node_host *h, const char *fmt)
3956{
3957	for (; h != NULL; h = h->next)
3958		if (h->addr.type == PF_ADDR_URPFFAILED) {
3959			yyerror(fmt);
3960			return (1);
3961		}
3962	return (0);
3963}
3964
3965int
3966disallow_alias(struct node_host *h, const char *fmt)
3967{
3968	for (; h != NULL; h = h->next)
3969		if (DYNIF_MULTIADDR(h->addr)) {
3970			yyerror(fmt, h->addr.v.tblname);
3971			return (1);
3972		}
3973	return (0);
3974}
3975
3976int
3977rule_consistent(struct pf_rule *r, int anchor_call)
3978{
3979	int	problems = 0;
3980
3981	if (r->proto != IPPROTO_TCP && r->os_fingerprint != PF_OSFP_ANY) {
3982		yyerror("os only applies to tcp");
3983		problems++;
3984	}
3985	if (r->proto != IPPROTO_TCP && r->proto != IPPROTO_UDP &&
3986	    (r->src.port_op || r->dst.port_op)) {
3987		yyerror("port only applies to tcp/udp");
3988		problems++;
3989	}
3990	if (r->proto != IPPROTO_TCP && r->proto != IPPROTO_UDP &&
3991	    r->uid.op) {
3992		yyerror("user only applies to tcp/udp");
3993		problems++;
3994	}
3995	if (r->proto != IPPROTO_TCP && r->proto != IPPROTO_UDP &&
3996	    r->gid.op) {
3997		yyerror("group only applies to tcp/udp");
3998		problems++;
3999	}
4000	if (r->proto != IPPROTO_ICMP && r->proto != IPPROTO_ICMPV6 &&
4001	    (r->type || r->code)) {
4002		yyerror("icmp-type/code only applies to icmp");
4003		problems++;
4004	}
4005	if (!r->af && (r->type || r->code)) {
4006		yyerror("must indicate address family with icmp-type/code");
4007		problems++;
4008	}
4009	if (r->rule_flag & PFRULE_AFTO && r->af == r->naf) {
4010		yyerror("must indicate different address family with af-to");
4011		problems++;
4012	}
4013	if (r->overload_tblname[0] &&
4014	    r->max_src_conn == 0 && r->max_src_conn_rate.seconds == 0) {
4015		yyerror("'overload' requires 'max-src-conn' "
4016		    "or 'max-src-conn-rate'");
4017		problems++;
4018	}
4019	if ((r->proto == IPPROTO_ICMP && r->af == AF_INET6) ||
4020	    (r->proto == IPPROTO_ICMPV6 && r->af == AF_INET)) {
4021		yyerror("proto %s doesn't match address family %s",
4022		    r->proto == IPPROTO_ICMP ? "icmp" : "icmp6",
4023		    r->af == AF_INET ? "inet" : "inet6");
4024		problems++;
4025	}
4026	if (r->allow_opts && r->action != PF_PASS) {
4027		yyerror("allow-opts can only be specified for pass rules");
4028		problems++;
4029	}
4030	if (r->rule_flag & PFRULE_FRAGMENT && (r->src.port_op ||
4031	    r->dst.port_op || r->flagset || r->type || r->code)) {
4032		yyerror("fragments can be filtered only on IP header fields");
4033		problems++;
4034	}
4035	if (r->rule_flag & PFRULE_RETURNRST && r->proto != IPPROTO_TCP) {
4036		yyerror("return-rst can only be applied to TCP rules");
4037		problems++;
4038	}
4039	if (r->max_src_nodes && !(r->rule_flag & PFRULE_RULESRCTRACK)) {
4040		yyerror("max-src-nodes requires 'source-track rule'");
4041		problems++;
4042	}
4043	if (r->action != PF_PASS && r->keep_state) {
4044		yyerror("keep state is great, but only for pass rules");
4045		problems++;
4046	}
4047	if (r->rule_flag & PFRULE_STATESLOPPY &&
4048	    (r->keep_state == PF_STATE_MODULATE ||
4049	    r->keep_state == PF_STATE_SYNPROXY)) {
4050		yyerror("sloppy state matching cannot be used with "
4051		    "synproxy state or modulate state");
4052		problems++;
4053	}
4054	if ((r->nat.addr.type != PF_ADDR_NONE ||
4055	    r->rdr.addr.type != PF_ADDR_NONE) &&
4056	    r->action != PF_MATCH && !r->keep_state) {
4057		yyerror("nat-to and rdr-to require keep state");
4058		problems++;
4059	}
4060	if (r->direction == PF_INOUT && (r->nat.addr.type != PF_ADDR_NONE ||
4061	    r->rdr.addr.type != PF_ADDR_NONE)) {
4062		yyerror("nat-to and rdr-to require a direction");
4063		problems++;
4064	}
4065	if (r->af == AF_INET6 && (r->scrub_flags &
4066	    (PFSTATE_NODF|PFSTATE_RANDOMID))) {
4067		yyerror("address family inet6 does not support scrub options "
4068		    "no-df, random-id");
4069		problems++;
4070	}
4071
4072	/* Basic rule sanity check. */
4073	switch (r->action) {
4074	case PF_MATCH:
4075		if (r->divert.port) {
4076			yyerror("divert is not supported on match rules");
4077			problems++;
4078		}
4079		if (r->divert_packet.port) {
4080			yyerror("divert is not supported on match rules");
4081			problems++;
4082		}
4083		if (r->rt) {
4084			yyerror("route-to, reply-to and dup-to "
4085			   "are not supported on match rules");
4086			problems++;
4087		}
4088		if (r->rule_flag & PFRULE_AFTO) {
4089			yyerror("af-to is not supported on match rules");
4090			problems++;
4091		}
4092		break;
4093	case PF_DROP:
4094		if (r->rt) {
4095			yyerror("route-to, reply-to and dup-to "
4096			   "are not supported on block rules");
4097			problems++;
4098		}
4099		break;
4100	default:;
4101	}
4102	return (-problems);
4103}
4104
4105int
4106process_tabledef(char *name, struct table_opts *opts, int popts)
4107{
4108	struct pfr_buffer	 ab;
4109	struct node_tinit	*ti;
4110
4111	bzero(&ab, sizeof(ab));
4112	ab.pfrb_type = PFRB_ADDRS;
4113	SIMPLEQ_FOREACH(ti, &opts->init_nodes, entries) {
4114		if (ti->file)
4115			if (pfr_buf_load(&ab, ti->file, 0, popts)) {
4116				if (errno)
4117					yyerror("cannot load \"%s\": %s",
4118					    ti->file, strerror(errno));
4119				else
4120					yyerror("file \"%s\" contains bad data",
4121					    ti->file);
4122				goto _error;
4123			}
4124		if (ti->host)
4125			if (append_addr_host(&ab, ti->host, 0, 0)) {
4126				yyerror("cannot create address buffer: %s",
4127				    strerror(errno));
4128				goto _error;
4129			}
4130	}
4131	if (pf->opts & PF_OPT_VERBOSE)
4132		print_tabledef(name, opts->flags, opts->init_addr,
4133		    &opts->init_nodes);
4134	if (!(pf->opts & PF_OPT_NOACTION) &&
4135	    pfctl_define_table(name, opts->flags, opts->init_addr,
4136	    pf->anchor->path, &ab, pf->anchor->ruleset.tticket)) {
4137		yyerror("cannot define table %s: %s", name,
4138		    pfr_strerror(errno));
4139		goto _error;
4140	}
4141	pf->tdirty = 1;
4142	pfr_buf_clear(&ab);
4143	return (0);
4144_error:
4145	pfr_buf_clear(&ab);
4146	return (-1);
4147}
4148
4149struct keywords {
4150	const char	*k_name;
4151	int		 k_val;
4152};
4153
4154/* macro gore, but you should've seen the prior indentation nightmare... */
4155
4156#define FREE_LIST(T,r) \
4157	do { \
4158		T *p, *node = r; \
4159		while (node != NULL) { \
4160			p = node; \
4161			node = node->next; \
4162			free(p); \
4163		} \
4164	} while (0)
4165
4166#define LOOP_THROUGH(T,n,r,C) \
4167	do { \
4168		T *n; \
4169		if (r == NULL) { \
4170			r = calloc(1, sizeof(T)); \
4171			if (r == NULL) \
4172				err(1, "LOOP: calloc"); \
4173			r->next = NULL; \
4174		} \
4175		n = r; \
4176		while (n != NULL) { \
4177			do { \
4178				C; \
4179			} while (0); \
4180			n = n->next; \
4181		} \
4182	} while (0)
4183
4184void
4185expand_label_str(char *label, size_t len, const char *srch, const char *repl)
4186{
4187	char *tmp;
4188	char *p, *q;
4189
4190	if ((tmp = calloc(1, len)) == NULL)
4191		err(1, "expand_label_str: calloc");
4192	p = q = label;
4193	while ((q = strstr(p, srch)) != NULL) {
4194		*q = '\0';
4195		if ((strlcat(tmp, p, len) >= len) ||
4196		    (strlcat(tmp, repl, len) >= len))
4197			errx(1, "expand_label: label too long");
4198		q += strlen(srch);
4199		p = q;
4200	}
4201	if (strlcat(tmp, p, len) >= len)
4202		errx(1, "expand_label: label too long");
4203	strlcpy(label, tmp, len);	/* always fits */
4204	free(tmp);
4205}
4206
4207void
4208expand_label_if(const char *name, char *label, size_t len, const char *ifname)
4209{
4210	if (strstr(label, name) != NULL) {
4211		if (!*ifname)
4212			expand_label_str(label, len, name, "any");
4213		else
4214			expand_label_str(label, len, name, ifname);
4215	}
4216}
4217
4218void
4219expand_label_addr(const char *name, char *label, size_t len, sa_family_t af,
4220    struct node_host *h)
4221{
4222	char tmp[64], tmp_not[66];
4223
4224	if (strstr(label, name) != NULL) {
4225		switch (h->addr.type) {
4226		case PF_ADDR_DYNIFTL:
4227			snprintf(tmp, sizeof(tmp), "(%s)", h->addr.v.ifname);
4228			break;
4229		case PF_ADDR_TABLE:
4230			snprintf(tmp, sizeof(tmp), "<%s>", h->addr.v.tblname);
4231			break;
4232		case PF_ADDR_NOROUTE:
4233			snprintf(tmp, sizeof(tmp), "no-route");
4234			break;
4235		case PF_ADDR_URPFFAILED:
4236			snprintf(tmp, sizeof(tmp), "urpf-failed");
4237			break;
4238		case PF_ADDR_ADDRMASK:
4239			if (!af || (PF_AZERO(&h->addr.v.a.addr, af) &&
4240			    PF_AZERO(&h->addr.v.a.mask, af)))
4241				snprintf(tmp, sizeof(tmp), "any");
4242			else {
4243				char	a[48];
4244				int	bits;
4245
4246				if (inet_ntop(af, &h->addr.v.a.addr, a,
4247				    sizeof(a)) == NULL)
4248					snprintf(tmp, sizeof(tmp), "?");
4249				else {
4250					bits = unmask(&h->addr.v.a.mask, af);
4251					if ((af == AF_INET && bits < 32) ||
4252					    (af == AF_INET6 && bits < 128))
4253						snprintf(tmp, sizeof(tmp),
4254						    "%s/%d", a, bits);
4255					else
4256						snprintf(tmp, sizeof(tmp),
4257						    "%s", a);
4258				}
4259			}
4260			break;
4261		default:
4262			snprintf(tmp, sizeof(tmp), "?");
4263			break;
4264		}
4265
4266		if (h->not) {
4267			snprintf(tmp_not, sizeof(tmp_not), "! %s", tmp);
4268			expand_label_str(label, len, name, tmp_not);
4269		} else
4270			expand_label_str(label, len, name, tmp);
4271	}
4272}
4273
4274void
4275expand_label_port(const char *name, char *label, size_t len,
4276    struct node_port *port)
4277{
4278	char	 a1[6], a2[6], op[13] = "";
4279
4280	if (strstr(label, name) != NULL) {
4281		snprintf(a1, sizeof(a1), "%u", ntohs(port->port[0]));
4282		snprintf(a2, sizeof(a2), "%u", ntohs(port->port[1]));
4283		if (!port->op)
4284			;
4285		else if (port->op == PF_OP_IRG)
4286			snprintf(op, sizeof(op), "%s><%s", a1, a2);
4287		else if (port->op == PF_OP_XRG)
4288			snprintf(op, sizeof(op), "%s<>%s", a1, a2);
4289		else if (port->op == PF_OP_EQ)
4290			snprintf(op, sizeof(op), "%s", a1);
4291		else if (port->op == PF_OP_NE)
4292			snprintf(op, sizeof(op), "!=%s", a1);
4293		else if (port->op == PF_OP_LT)
4294			snprintf(op, sizeof(op), "<%s", a1);
4295		else if (port->op == PF_OP_LE)
4296			snprintf(op, sizeof(op), "<=%s", a1);
4297		else if (port->op == PF_OP_GT)
4298			snprintf(op, sizeof(op), ">%s", a1);
4299		else if (port->op == PF_OP_GE)
4300			snprintf(op, sizeof(op), ">=%s", a1);
4301		expand_label_str(label, len, name, op);
4302	}
4303}
4304
4305void
4306expand_label_proto(const char *name, char *label, size_t len, u_int8_t proto)
4307{
4308	struct protoent *pe;
4309	char n[4];
4310
4311	if (strstr(label, name) != NULL) {
4312		pe = getprotobynumber(proto);
4313		if (pe != NULL)
4314			expand_label_str(label, len, name, pe->p_name);
4315		else {
4316			snprintf(n, sizeof(n), "%u", proto);
4317			expand_label_str(label, len, name, n);
4318		}
4319	}
4320}
4321
4322void
4323expand_label_nr(const char *name, char *label, size_t len)
4324{
4325	char n[11];
4326
4327	if (strstr(label, name) != NULL) {
4328		snprintf(n, sizeof(n), "%u", pf->anchor->match);
4329		expand_label_str(label, len, name, n);
4330	}
4331}
4332
4333void
4334expand_label(char *label, size_t len, const char *ifname, sa_family_t af,
4335    struct node_host *src_host, struct node_port *src_port,
4336    struct node_host *dst_host, struct node_port *dst_port,
4337    u_int8_t proto)
4338{
4339	expand_label_if("$if", label, len, ifname);
4340	expand_label_addr("$srcaddr", label, len, af, src_host);
4341	expand_label_addr("$dstaddr", label, len, af, dst_host);
4342	expand_label_port("$srcport", label, len, src_port);
4343	expand_label_port("$dstport", label, len, dst_port);
4344	expand_label_proto("$proto", label, len, proto);
4345	expand_label_nr("$nr", label, len);
4346}
4347
4348int
4349expand_queue(char *qname, struct node_if *interfaces, struct queue_opts *opts)
4350{
4351	struct pf_queuespec	qspec;
4352
4353	LOOP_THROUGH(struct node_if, interface, interfaces,
4354		bzero(&qspec, sizeof(qspec));
4355		if (!opts->parent && (opts->marker & QOM_BWSPEC))
4356			opts->flags |= PFQS_ROOTCLASS;
4357		if (!(opts->marker & QOM_BWSPEC) &&
4358		    !(opts->marker & QOM_FLOWS)) {
4359			yyerror("no bandwidth or flow specification");
4360			return (1);
4361		}
4362		if (strlcpy(qspec.qname, qname, sizeof(qspec.qname)) >=
4363		    sizeof(qspec.qname)) {
4364			yyerror("queuename too long");
4365			return (1);
4366		}
4367		if (opts->parent && strlcpy(qspec.parent, opts->parent,
4368		    sizeof(qspec.parent)) >= sizeof(qspec.parent)) {
4369			yyerror("parent too long");
4370			return (1);
4371		}
4372		if (strlcpy(qspec.ifname, interface->ifname,
4373		    sizeof(qspec.ifname)) >= sizeof(qspec.ifname)) {
4374			yyerror("interface too long");
4375			return (1);
4376		}
4377		qspec.realtime.m1.absolute = opts->realtime.m1.bw_absolute;
4378		qspec.realtime.m1.percent = opts->realtime.m1.bw_percent;
4379		qspec.realtime.m2.absolute = opts->realtime.m2.bw_absolute;
4380		qspec.realtime.m2.percent = opts->realtime.m2.bw_percent;
4381		qspec.realtime.d = opts->realtime.d;
4382
4383		qspec.linkshare.m1.absolute = opts->linkshare.m1.bw_absolute;
4384		qspec.linkshare.m1.percent = opts->linkshare.m1.bw_percent;
4385		qspec.linkshare.m2.absolute = opts->linkshare.m2.bw_absolute;
4386		qspec.linkshare.m2.percent = opts->linkshare.m2.bw_percent;
4387		qspec.linkshare.d = opts->linkshare.d;
4388
4389		qspec.upperlimit.m1.absolute = opts->upperlimit.m1.bw_absolute;
4390		qspec.upperlimit.m1.percent = opts->upperlimit.m1.bw_percent;
4391		qspec.upperlimit.m2.absolute = opts->upperlimit.m2.bw_absolute;
4392		qspec.upperlimit.m2.percent = opts->upperlimit.m2.bw_percent;
4393		qspec.upperlimit.d = opts->upperlimit.d;
4394
4395		qspec.flowqueue.flows = opts->flowqueue.flows;
4396		qspec.flowqueue.quantum = opts->flowqueue.quantum;
4397		qspec.flowqueue.interval = opts->flowqueue.interval;
4398		qspec.flowqueue.target = opts->flowqueue.target;
4399
4400		qspec.flags = opts->flags;
4401		qspec.qlimit = opts->qlimit;
4402
4403		if (pfctl_add_queue(pf, &qspec)) {
4404			yyerror("cannot add queue");
4405			return (1);
4406		}
4407	);
4408
4409	FREE_LIST(struct node_if, interfaces);
4410	return (0);
4411}
4412
4413int
4414expand_divertspec(struct pf_rule *r, struct divertspec *ds)
4415{
4416	struct node_host *n;
4417
4418	if (ds->port == 0)
4419		return (0);
4420
4421	r->divert.port = ds->port;
4422
4423	if (r->direction == PF_OUT) {
4424		if (ds->addr) {
4425			yyerror("address specified for outgoing divert");
4426			return (1);
4427		}
4428		bzero(&r->divert.addr, sizeof(r->divert.addr));
4429		return (0);
4430	}
4431
4432	if (!ds->addr) {
4433		yyerror("no address specified for incoming divert");
4434		return (1);
4435	}
4436	if (r->af) {
4437		for (n = ds->addr; n != NULL; n = n->next)
4438			if (n->af == r->af)
4439				break;
4440		if (n == NULL) {
4441			yyerror("address family mismatch for divert");
4442			return (1);
4443		}
4444		r->divert.addr = n->addr.v.a.addr;
4445	} else {
4446		r->af = ds->addr->af;
4447		r->divert.addr = ds->addr->addr.v.a.addr;
4448	}
4449	return (0);
4450}
4451
4452int
4453collapse_redirspec(struct pf_pool *rpool, struct pf_rule *r,
4454    struct redirspec *rs, u_int8_t allow_if)
4455{
4456	struct pf_opt_tbl *tbl = NULL;
4457	struct node_host *h, *hprev = NULL;
4458	struct pf_rule_addr ra;
4459	int af = 0, naddr = 0;
4460
4461	if (!rs || !rs->rdr || rs->rdr->host == NULL) {
4462		rpool->addr.type = PF_ADDR_NONE;
4463		return (0);
4464	}
4465
4466	if (r->rule_flag & PFRULE_AFTO)
4467		r->naf = rs->af;
4468
4469	for (h = rs->rdr->host; h != NULL; h = h->next) {
4470		/* set rule address family if redirect spec has one */
4471		if (rs->af && !r->af && !af) {
4472			/* swap address families for af-to */
4473			if (r->naf == AF_INET6)
4474				af = AF_INET;
4475			else if (r->naf == AF_INET)
4476				af = AF_INET6;
4477			else
4478				af = rs->af;
4479		}
4480		if (h->af && !r->naf) {	/* nat-to/rdr-to case */
4481			/* skip if the rule af doesn't match redirect af */
4482			if (r->af && r->af != h->af)
4483				continue;
4484			/*
4485			 * fail if the chosen af is not universal for
4486			 * all addresses in the redirect address pool
4487			 */
4488			if (!r->af && af && af != h->af) {
4489				yyerror("%s spec contains addresses with "
4490				    "different address families",
4491				    allow_if ? "routing" : "translation");
4492				return (1);
4493			}
4494		} else if (h->af) {	/* af-to case */
4495			/*
4496			 * fail if the redirect spec af is not universal
4497			 * for all addresses in the redirect address pool
4498			 */
4499			if (rs->af && rs->af != h->af) {
4500				yyerror("%s spec contains addresses that "
4501				    "don't match target address family",
4502				    allow_if ? "routing" : "translation");
4503				return (1);
4504			}
4505		}
4506		/* else if (!h->af):
4507		 * we silently allow any not af-specific host specs,
4508		 * e.g. (em0) and let the kernel deal with them
4509		 */
4510
4511		/* if we haven't selected the rule af yet, now it's time */
4512		if (!r->af && !af)
4513			af = h->af;
4514
4515		if (naddr == 0) {	/* the first host */
4516			rpool->addr = h->addr;
4517			if (!allow_if && h->ifname) {
4518				yyerror("@if not permitted for translation");
4519				return (1);
4520			}
4521			if (h->ifname && strlcpy(rpool->ifname, h->ifname,
4522			    sizeof(rpool->ifname)) >= sizeof(rpool->ifname))
4523				errx(1, "collapse_redirspec: strlcpy");
4524			hprev = h; /* in case we need to conver to a table */
4525		} else {		/* multiple hosts */
4526			if (rs->pool_opts.type &&
4527			    !PF_POOL_DYNTYPE(rs->pool_opts.type)) {
4528				yyerror("pool type is not valid for multiple "
4529				    "translation or routing addresses");
4530				return (1);
4531			}
4532			if ((hprev && hprev->addr.type != PF_ADDR_ADDRMASK) &&
4533			    (hprev && hprev->addr.type != PF_ADDR_NONE) &&
4534			    h->addr.type != PF_ADDR_ADDRMASK &&
4535			    h->addr.type != PF_ADDR_NONE) {
4536				yyerror("multiple tables or dynamic interfaces "
4537				    "not supported for translation or routing");
4538				return (1);
4539			}
4540			if (!allow_if && h->ifname) {
4541				yyerror("@if not permitted for translation");
4542				return (1);
4543			}
4544			if (hprev) {
4545				/*
4546				 * undo some damage and convert the single
4547				 * host pool to the table
4548				 */
4549				memset(&ra, 0, sizeof(ra));
4550				memset(rpool->ifname, 0, sizeof(rpool->ifname));
4551				ra.addr = hprev->addr;
4552				ra.weight = hprev->weight;
4553				if (add_opt_table(pf, &tbl,
4554				    hprev->af, &ra, hprev->ifname))
4555					return (1);
4556				hprev = NULL;
4557			}
4558			memset(&ra, 0, sizeof(ra));
4559			ra.addr = h->addr;
4560			ra.weight = h->weight;
4561			if (add_opt_table(pf, &tbl,
4562			    h->af, &ra, h->ifname))
4563				return (1);
4564		}
4565		naddr++;
4566	}
4567	/* set rule af to the one chosen above */
4568	if (!r->af && af)
4569		r->af = af;
4570	if (!naddr) {
4571		yyerror("af mismatch in %s spec",
4572		    allow_if ? "routing" : "translation");
4573		return (1);
4574	}
4575	if (tbl) {
4576		if ((pf->opts & PF_OPT_NOACTION) == 0 &&
4577		     pf_opt_create_table(pf, tbl))
4578				return (1);
4579
4580		pf->tdirty = 1;
4581
4582		if (pf->opts & PF_OPT_VERBOSE)
4583			print_tabledef(tbl->pt_name,
4584			    PFR_TFLAG_CONST | tbl->pt_flags,
4585			    1, &tbl->pt_nodes);
4586
4587		memset(&rpool->addr, 0, sizeof(rpool->addr));
4588		rpool->addr.type = PF_ADDR_TABLE;
4589		strlcpy(rpool->addr.v.tblname, tbl->pt_name,
4590		    sizeof(rpool->addr.v.tblname));
4591
4592		pfr_buf_clear(tbl->pt_buf);
4593		free(tbl->pt_buf);
4594		tbl->pt_buf = NULL;
4595		free(tbl);
4596	}
4597	return (0);
4598}
4599
4600
4601int
4602apply_redirspec(struct pf_pool *rpool, struct pf_rule *r, struct redirspec *rs,
4603    int isrdr, struct node_port *np)
4604{
4605	if (!rs || !rs->rdr)
4606		return (0);
4607
4608	rpool->proxy_port[0] = ntohs(rs->rdr->rport.a);
4609
4610	if (isrdr) {
4611		if (!rs->rdr->rport.b && rs->rdr->rport.t) {
4612			rpool->proxy_port[1] = ntohs(rs->rdr->rport.a) +
4613			    (ntohs(np->port[1]) - ntohs(np->port[0]));
4614		} else
4615			rpool->proxy_port[1] = ntohs(rs->rdr->rport.b);
4616	} else {
4617		rpool->proxy_port[1] = ntohs(rs->rdr->rport.b);
4618		if (!rpool->proxy_port[0] && !rpool->proxy_port[1]) {
4619			rpool->proxy_port[0] = PF_NAT_PROXY_PORT_LOW;
4620			rpool->proxy_port[1] = PF_NAT_PROXY_PORT_HIGH;
4621		} else if (!rpool->proxy_port[1])
4622			rpool->proxy_port[1] = rpool->proxy_port[0];
4623	}
4624
4625	rpool->opts = rs->pool_opts.type;
4626	if ((rpool->opts & PF_POOL_TYPEMASK) == PF_POOL_NONE &&
4627	    (rpool->addr.type == PF_ADDR_TABLE ||
4628	    DYNIF_MULTIADDR(rpool->addr)))
4629		rpool->opts |= PF_POOL_ROUNDROBIN;
4630
4631	if (!PF_POOL_DYNTYPE(rpool->opts) &&
4632	    (disallow_table(rs->rdr->host,
4633	    "tables are not supported by pool type") ||
4634	    disallow_alias(rs->rdr->host,
4635	    "interface (%s) is not supported by pool type")))
4636		return (1);
4637
4638	if (rs->pool_opts.key != NULL)
4639		memcpy(&rpool->key, rs->pool_opts.key,
4640		    sizeof(struct pf_poolhashkey));
4641
4642	if (rs->pool_opts.opts)
4643		rpool->opts |= rs->pool_opts.opts;
4644
4645	if (rs->pool_opts.staticport) {
4646		if (isrdr) {
4647			yyerror("the 'static-port' option is only valid with "
4648			    "nat rules");
4649			return (1);
4650		}
4651		if (rpool->proxy_port[0] != PF_NAT_PROXY_PORT_LOW &&
4652		    rpool->proxy_port[1] != PF_NAT_PROXY_PORT_HIGH) {
4653			yyerror("the 'static-port' option can't be used when "
4654			    "specifying a port range");
4655			return (1);
4656		}
4657		rpool->proxy_port[0] = 0;
4658		rpool->proxy_port[1] = 0;
4659	}
4660
4661	return (0);
4662}
4663
4664
4665void
4666expand_rule(struct pf_rule *r, int keeprule, struct node_if *interfaces,
4667    struct redirspec *nat, struct redirspec *rdr, struct redirspec *rroute,
4668    struct node_proto *protos, struct node_os *src_oses,
4669    struct node_host *src_hosts, struct node_port *src_ports,
4670    struct node_host *dst_hosts, struct node_port *dst_ports,
4671    struct node_uid *uids, struct node_gid *gids, struct node_if *rcv,
4672    struct node_icmp *icmp_types, const char *anchor_call)
4673{
4674	sa_family_t		 af = r->af;
4675	int			 added = 0, error = 0;
4676	char			 ifname[IF_NAMESIZE];
4677	char			 label[PF_RULE_LABEL_SIZE];
4678	char			 tagname[PF_TAG_NAME_SIZE];
4679	char			 match_tagname[PF_TAG_NAME_SIZE];
4680	u_int8_t		 flags, flagset, keep_state;
4681	struct node_host	*srch, *dsth, *osrch, *odsth;
4682	struct redirspec	 binat;
4683	struct pf_rule		 rb;
4684	int			 dir = r->direction;
4685
4686	if (strlcpy(label, r->label, sizeof(label)) >= sizeof(label))
4687		errx(1, "expand_rule: strlcpy");
4688	if (strlcpy(tagname, r->tagname, sizeof(tagname)) >= sizeof(tagname))
4689		errx(1, "expand_rule: strlcpy");
4690	if (strlcpy(match_tagname, r->match_tagname, sizeof(match_tagname)) >=
4691	    sizeof(match_tagname))
4692		errx(1, "expand_rule: strlcpy");
4693	flags = r->flags;
4694	flagset = r->flagset;
4695	keep_state = r->keep_state;
4696
4697	r->src.addr.type = r->dst.addr.type = PF_ADDR_ADDRMASK;
4698
4699	LOOP_THROUGH(struct node_if, interface, interfaces,
4700	LOOP_THROUGH(struct node_proto, proto, protos,
4701	LOOP_THROUGH(struct node_icmp, icmp_type, icmp_types,
4702	LOOP_THROUGH(struct node_host, src_host, src_hosts,
4703	LOOP_THROUGH(struct node_host, dst_host, dst_hosts,
4704	LOOP_THROUGH(struct node_port, src_port, src_ports,
4705	LOOP_THROUGH(struct node_port, dst_port, dst_ports,
4706	LOOP_THROUGH(struct node_os, src_os, src_oses,
4707	LOOP_THROUGH(struct node_uid, uid, uids,
4708	LOOP_THROUGH(struct node_gid, gid, gids,
4709
4710		r->af = af;
4711
4712		error += collapse_redirspec(&r->rdr, r, rdr, 0);
4713		error += collapse_redirspec(&r->nat, r, nat, 0);
4714		error += collapse_redirspec(&r->route, r, rroute, 1);
4715
4716		/* disallow @if in from or to for the time being */
4717		if ((src_host->addr.type == PF_ADDR_ADDRMASK &&
4718		    src_host->ifname) ||
4719		    (dst_host->addr.type == PF_ADDR_ADDRMASK &&
4720		    dst_host->ifname)) {
4721			yyerror("@if syntax not permitted in from or to");
4722			error++;
4723		}
4724		/* for link-local IPv6 address, interface must match up */
4725		if ((r->af && src_host->af && r->af != src_host->af) ||
4726		    (r->af && dst_host->af && r->af != dst_host->af) ||
4727		    (src_host->af && dst_host->af &&
4728		    src_host->af != dst_host->af) ||
4729		    (src_host->ifindex && dst_host->ifindex &&
4730		    src_host->ifindex != dst_host->ifindex) ||
4731		    (src_host->ifindex && *interface->ifname &&
4732		    src_host->ifindex != ifa_nametoindex(interface->ifname)) ||
4733		    (dst_host->ifindex && *interface->ifname &&
4734		    dst_host->ifindex != ifa_nametoindex(interface->ifname)))
4735			continue;
4736		if (!r->af && src_host->af)
4737			r->af = src_host->af;
4738		else if (!r->af && dst_host->af)
4739			r->af = dst_host->af;
4740
4741		if (*interface->ifname)
4742			strlcpy(r->ifname, interface->ifname,
4743			    sizeof(r->ifname));
4744		else if (ifa_indextoname(src_host->ifindex, ifname))
4745			strlcpy(r->ifname, ifname, sizeof(r->ifname));
4746		else if (ifa_indextoname(dst_host->ifindex, ifname))
4747			strlcpy(r->ifname, ifname, sizeof(r->ifname));
4748		else
4749			memset(r->ifname, '\0', sizeof(r->ifname));
4750
4751		if (interface->use_rdomain)
4752			r->onrdomain = interface->rdomain;
4753		else
4754			r->onrdomain = -1;
4755		if (strlcpy(r->label, label, sizeof(r->label)) >=
4756		    sizeof(r->label))
4757			errx(1, "expand_rule: strlcpy");
4758		if (strlcpy(r->tagname, tagname, sizeof(r->tagname)) >=
4759		    sizeof(r->tagname))
4760			errx(1, "expand_rule: strlcpy");
4761		if (strlcpy(r->match_tagname, match_tagname,
4762		    sizeof(r->match_tagname)) >= sizeof(r->match_tagname))
4763			errx(1, "expand_rule: strlcpy");
4764		expand_label(r->label, PF_RULE_LABEL_SIZE, r->ifname, r->af,
4765		    src_host, src_port, dst_host, dst_port, proto->proto);
4766		expand_label(r->tagname, PF_TAG_NAME_SIZE, r->ifname, r->af,
4767		    src_host, src_port, dst_host, dst_port, proto->proto);
4768		expand_label(r->match_tagname, PF_TAG_NAME_SIZE, r->ifname,
4769		    r->af, src_host, src_port, dst_host, dst_port,
4770		    proto->proto);
4771
4772		osrch = odsth = NULL;
4773		if (src_host->addr.type == PF_ADDR_DYNIFTL) {
4774			osrch = src_host;
4775			if ((src_host = gen_dynnode(src_host, r->af)) == NULL)
4776				err(1, "expand_rule: calloc");
4777		}
4778		if (dst_host->addr.type == PF_ADDR_DYNIFTL) {
4779			odsth = dst_host;
4780			if ((dst_host = gen_dynnode(dst_host, r->af)) == NULL)
4781				err(1, "expand_rule: calloc");
4782		}
4783
4784		error += check_netmask(src_host, r->af);
4785		error += check_netmask(dst_host, r->af);
4786
4787		r->ifnot = interface->not;
4788		r->proto = proto->proto;
4789		r->src.addr = src_host->addr;
4790		r->src.neg = src_host->not;
4791		r->src.port[0] = src_port->port[0];
4792		r->src.port[1] = src_port->port[1];
4793		r->src.port_op = src_port->op;
4794		r->dst.addr = dst_host->addr;
4795		r->dst.neg = dst_host->not;
4796		r->dst.port[0] = dst_port->port[0];
4797		r->dst.port[1] = dst_port->port[1];
4798		r->dst.port_op = dst_port->op;
4799		r->uid.op = uid->op;
4800		r->uid.uid[0] = uid->uid[0];
4801		r->uid.uid[1] = uid->uid[1];
4802		r->gid.op = gid->op;
4803		r->gid.gid[0] = gid->gid[0];
4804		r->gid.gid[1] = gid->gid[1];
4805		if (rcv) {
4806			strlcpy(r->rcv_ifname, rcv->ifname,
4807			    sizeof(r->rcv_ifname));
4808			r->rcvifnot = rcv->not;
4809		}
4810		r->type = icmp_type->type;
4811		r->code = icmp_type->code;
4812
4813		if ((keep_state == PF_STATE_MODULATE ||
4814		    keep_state == PF_STATE_SYNPROXY) &&
4815		    r->proto && r->proto != IPPROTO_TCP)
4816			r->keep_state = PF_STATE_NORMAL;
4817		else
4818			r->keep_state = keep_state;
4819
4820		if (r->proto && r->proto != IPPROTO_TCP) {
4821			r->flags = 0;
4822			r->flagset = 0;
4823		} else {
4824			r->flags = flags;
4825			r->flagset = flagset;
4826		}
4827		if (icmp_type->proto && r->proto != icmp_type->proto) {
4828			yyerror("icmp-type mismatch");
4829			error++;
4830		}
4831
4832		if (src_os && src_os->os) {
4833			r->os_fingerprint = pfctl_get_fingerprint(src_os->os);
4834			if ((pf->opts & PF_OPT_VERBOSE2) &&
4835			    r->os_fingerprint == PF_OSFP_NOMATCH)
4836				fprintf(stderr,
4837				    "warning: unknown '%s' OS fingerprint\n",
4838				    src_os->os);
4839		} else {
4840			r->os_fingerprint = PF_OSFP_ANY;
4841		}
4842
4843		if (nat && nat->rdr && nat->binat) {
4844			if (disallow_table(src_host, "invalid use of table "
4845			    "<%s> as the source address of a binat-to rule") ||
4846			    disallow_alias(src_host, "invalid use of interface "
4847			    "(%s) as the source address of a binat-to rule")) {
4848				error++;
4849			} else if ((r->src.addr.type != PF_ADDR_ADDRMASK &&
4850			    r->src.addr.type != PF_ADDR_DYNIFTL) ||
4851			    (r->nat.addr.type != PF_ADDR_ADDRMASK &&
4852			    r->nat.addr.type != PF_ADDR_DYNIFTL)) {
4853				yyerror("binat-to requires a specified "
4854				    "source and redirect address");
4855				error++;
4856			}
4857			if (DYNIF_MULTIADDR(r->src.addr) ||
4858			    DYNIF_MULTIADDR(r->nat.addr)) {
4859				yyerror ("dynamic interfaces must be used with "
4860				    ":0 in a binat-to rule");
4861				error++;
4862			}
4863			if (PF_AZERO(&r->src.addr.v.a.mask, af) ||
4864			    PF_AZERO(&r->nat.addr.v.a.mask, af)) {
4865				yyerror ("source and redir addresess must have "
4866				    "a matching network mask in binat-rule");
4867				error++;
4868			}
4869			if (r->nat.addr.type == PF_ADDR_TABLE) {
4870				yyerror ("tables cannot be used as the redirect "
4871				    "address of a binat-to rule");
4872				error++;
4873			}
4874			if (r->direction != PF_INOUT) {
4875				yyerror("binat-to cannot be specified "
4876				    "with a direction");
4877				error++;
4878			}
4879
4880			/* first specify outbound NAT rule */
4881			r->direction = PF_OUT;
4882		}
4883
4884		error += apply_redirspec(&r->nat, r, nat, 0, dst_port);
4885		error += apply_redirspec(&r->rdr, r, rdr, 1, dst_port);
4886		error += apply_redirspec(&r->route, r, rroute, 2, dst_port);
4887
4888		if (rule_consistent(r, anchor_call[0]) < 0 || error)
4889			yyerror("skipping rule due to errors");
4890		else {
4891			r->nr = pf->astack[pf->asd]->match++;
4892			pfctl_add_rule(pf, r, anchor_call);
4893			added++;
4894		}
4895		r->direction = dir;
4896
4897		/* Generate binat's matching inbound rule */
4898		if (!error && nat && nat->rdr && nat->binat) {
4899			bcopy(r, &rb, sizeof(rb));
4900
4901			/* now specify inbound rdr rule */
4902			rb.direction = PF_IN;
4903
4904			if ((srch = calloc(1, sizeof(*srch))) == NULL)
4905				err(1, "expand_rule: calloc");
4906			bcopy(src_host, srch, sizeof(*srch));
4907			srch->ifname = NULL;
4908			srch->next = NULL;
4909			srch->tail = NULL;
4910
4911			if ((dsth = calloc(1, sizeof(*dsth))) == NULL)
4912				err(1, "expand_rule: calloc");
4913			bcopy(&rb.nat.addr, &dsth->addr, sizeof(dsth->addr));
4914			dsth->ifname = NULL;
4915			dsth->next = NULL;
4916			dsth->tail = NULL;
4917
4918			bzero(&binat, sizeof(binat));
4919			if ((binat.rdr =
4920			    calloc(1, sizeof(*binat.rdr))) == NULL)
4921				err(1, "expand_rule: calloc");
4922			bcopy(nat->rdr, binat.rdr, sizeof(*binat.rdr));
4923			bcopy(&nat->pool_opts, &binat.pool_opts,
4924			    sizeof(binat.pool_opts));
4925			binat.pool_opts.staticport = 0;
4926			binat.rdr->host = srch;
4927
4928			expand_rule(&rb, 1, interface, NULL, &binat, NULL,
4929			    proto,
4930			    src_os, dst_host, dst_port, dsth, src_port,
4931			    uid, gid, rcv, icmp_type, anchor_call);
4932		}
4933
4934		if (osrch && src_host->addr.type == PF_ADDR_DYNIFTL) {
4935			free(src_host);
4936			src_host = osrch;
4937		}
4938		if (odsth && dst_host->addr.type == PF_ADDR_DYNIFTL) {
4939			free(dst_host);
4940			dst_host = odsth;
4941		}
4942	))))))))));
4943
4944	if (!keeprule) {
4945		FREE_LIST(struct node_if, interfaces);
4946		FREE_LIST(struct node_proto, protos);
4947		FREE_LIST(struct node_host, src_hosts);
4948		FREE_LIST(struct node_port, src_ports);
4949		FREE_LIST(struct node_os, src_oses);
4950		FREE_LIST(struct node_host, dst_hosts);
4951		FREE_LIST(struct node_port, dst_ports);
4952		FREE_LIST(struct node_uid, uids);
4953		FREE_LIST(struct node_gid, gids);
4954		FREE_LIST(struct node_icmp, icmp_types);
4955		if (nat && nat->rdr)
4956			FREE_LIST(struct node_host, nat->rdr->host);
4957		if (rdr && rdr->rdr)
4958			FREE_LIST(struct node_host, rdr->rdr->host);
4959
4960	}
4961
4962	if (!added)
4963		yyerror("rule expands to no valid combination");
4964}
4965
4966int
4967expand_skip_interface(struct node_if *interfaces)
4968{
4969	int	errs = 0;
4970
4971	if (!interfaces || (!interfaces->next && !interfaces->not &&
4972	    !strcmp(interfaces->ifname, "none"))) {
4973		if (pf->opts & PF_OPT_VERBOSE)
4974			printf("set skip on none\n");
4975		errs = pfctl_set_interface_flags(pf, "", PFI_IFLAG_SKIP, 0);
4976		return (errs);
4977	}
4978
4979	if (pf->opts & PF_OPT_VERBOSE)
4980		printf("set skip on {");
4981	LOOP_THROUGH(struct node_if, interface, interfaces,
4982		if (pf->opts & PF_OPT_VERBOSE)
4983			printf(" %s", interface->ifname);
4984		if (interface->not) {
4985			yyerror("skip on ! <interface> is not supported");
4986			errs++;
4987		} else if (interface->use_rdomain) {
4988			yyerror("skip on rdomain <num> is not supported");
4989			errs++;
4990		} else
4991			errs += pfctl_set_interface_flags(pf,
4992			    interface->ifname, PFI_IFLAG_SKIP, 1);
4993	);
4994	if (pf->opts & PF_OPT_VERBOSE)
4995		printf(" }\n");
4996
4997	FREE_LIST(struct node_if, interfaces);
4998
4999	if (errs)
5000		return (1);
5001	else
5002		return (0);
5003}
5004
5005void
5006freehostlist(struct node_host *h)
5007{
5008	struct node_host *n;
5009
5010	for (n = h; n != NULL; n = n->next)
5011		if (n->ifname)
5012			free(n->ifname);
5013	FREE_LIST(struct node_host, h);
5014}
5015
5016#undef FREE_LIST
5017#undef LOOP_THROUGH
5018
5019int
5020kw_cmp(const void *k, const void *e)
5021{
5022	return (strcmp(k, ((const struct keywords *)e)->k_name));
5023}
5024
5025int
5026lookup(char *s)
5027{
5028	/* this has to be sorted always */
5029	static const struct keywords keywords[] = {
5030		{ "af-to",		AFTO},
5031		{ "all",		ALL},
5032		{ "allow-opts",		ALLOWOPTS},
5033		{ "anchor",		ANCHOR},
5034		{ "antispoof",		ANTISPOOF},
5035		{ "any",		ANY},
5036		{ "bandwidth",		BANDWIDTH},
5037		{ "binat-to",		BINATTO},
5038		{ "bitmask",		BITMASK},
5039		{ "block",		BLOCK},
5040		{ "block-policy",	BLOCKPOLICY},
5041		{ "burst",		BURST},
5042		{ "code",		CODE},
5043		{ "debug",		DEBUG},
5044		{ "default",		DEFAULT},
5045		{ "divert-packet",	DIVERTPACKET},
5046		{ "divert-reply",	DIVERTREPLY},
5047		{ "divert-to",		DIVERTTO},
5048		{ "drop",		DROP},
5049		{ "dup-to",		DUPTO},
5050		{ "file",		FILENAME},
5051		{ "fingerprints",	FINGERPRINTS},
5052		{ "flags",		FLAGS},
5053		{ "floating",		FLOATING},
5054		{ "flows",		FLOWS},
5055		{ "flush",		FLUSH},
5056		{ "for",		FOR},
5057		{ "fragment",		FRAGMENT},
5058		{ "from",		FROM},
5059		{ "global",		GLOBAL},
5060		{ "group",		GROUP},
5061		{ "hostid",		HOSTID},
5062		{ "icmp-type",		ICMPTYPE},
5063		{ "icmp6-type",		ICMP6TYPE},
5064		{ "if-bound",		IFBOUND},
5065		{ "in",			IN},
5066		{ "include",		INCLUDE},
5067		{ "inet",		INET},
5068		{ "inet6",		INET6},
5069		{ "keep",		KEEP},
5070		{ "label",		LABEL},
5071		{ "least-states",	LEASTSTATES},
5072		{ "limit",		LIMIT},
5073		{ "load",		LOAD},
5074		{ "log",		LOG},
5075		{ "loginterface",	LOGINTERFACE},
5076		{ "match",		MATCH},
5077		{ "matches",		MATCHES},
5078		{ "max",		MAXIMUM},
5079		{ "max-mss",		MAXMSS},
5080		{ "max-pkt-rate",	MAXPKTRATE},
5081		{ "max-src-conn",	MAXSRCCONN},
5082		{ "max-src-conn-rate",	MAXSRCCONNRATE},
5083		{ "max-src-nodes",	MAXSRCNODES},
5084		{ "max-src-states",	MAXSRCSTATES},
5085		{ "min",		MINIMUM},
5086		{ "min-ttl",		MINTTL},
5087		{ "modulate",		MODULATE},
5088		{ "nat-to",		NATTO},
5089		{ "no",			NO},
5090		{ "no-df",		NODF},
5091		{ "no-route",		NOROUTE},
5092		{ "no-sync",		NOSYNC},
5093		{ "on",			ON},
5094		{ "once",		ONCE},
5095		{ "optimization",	OPTIMIZATION},
5096		{ "os",			OS},
5097		{ "out",		OUT},
5098		{ "overload",		OVERLOAD},
5099		{ "parent",		PARENT},
5100		{ "pass",		PASS},
5101		{ "pflow",		PFLOW},
5102		{ "port",		PORT},
5103		{ "prio",		PRIO},
5104		{ "probability",	PROBABILITY},
5105		{ "proto",		PROTO},
5106		{ "qlimit",		QLIMIT},
5107		{ "quantum",		QUANTUM},
5108		{ "queue",		QUEUE},
5109		{ "quick",		QUICK},
5110		{ "random",		RANDOM},
5111		{ "random-id",		RANDOMID},
5112		{ "rdomain",		RDOMAIN},
5113		{ "rdr-to",		RDRTO},
5114		{ "reassemble",		REASSEMBLE},
5115		{ "received-on",	RECEIVEDON},
5116		{ "reply-to",		REPLYTO},
5117		{ "return",		RETURN},
5118		{ "return-icmp",	RETURNICMP},
5119		{ "return-icmp6",	RETURNICMP6},
5120		{ "return-rst",		RETURNRST},
5121		{ "round-robin",	ROUNDROBIN},
5122		{ "route",		ROUTE},
5123		{ "route-to",		ROUTETO},
5124		{ "rtable",		RTABLE},
5125		{ "rule",		RULE},
5126		{ "ruleset-optimization",	RULESET_OPTIMIZATION},
5127		{ "scrub",		SCRUB},
5128		{ "set",		SET},
5129		{ "skip",		SKIP},
5130		{ "sloppy",		SLOPPY},
5131		{ "source-hash",	SOURCEHASH},
5132		{ "source-track",	SOURCETRACK},
5133		{ "state",		STATE},
5134		{ "state-defaults",	STATEDEFAULTS},
5135		{ "state-policy",	STATEPOLICY},
5136		{ "static-port",	STATICPORT},
5137		{ "sticky-address",	STICKYADDRESS},
5138		{ "synproxy",		SYNPROXY},
5139		{ "table",		TABLE},
5140		{ "tag",		TAG},
5141		{ "tagged",		TAGGED},
5142		{ "timeout",		TIMEOUT},
5143		{ "to",			TO},
5144		{ "tos",		TOS},
5145		{ "ttl",		TTL},
5146		{ "urpf-failed",	URPFFAILED},
5147		{ "user",		USER},
5148		{ "weight",		WEIGHT},
5149	};
5150	const struct keywords	*p;
5151
5152	p = bsearch(s, keywords, sizeof(keywords)/sizeof(keywords[0]),
5153	    sizeof(keywords[0]), kw_cmp);
5154
5155	if (p) {
5156		if (debug > 1)
5157			fprintf(stderr, "%s: %d\n", s, p->k_val);
5158		return (p->k_val);
5159	} else {
5160		if (debug > 1)
5161			fprintf(stderr, "string: %s\n", s);
5162		return (STRING);
5163	}
5164}
5165
5166#define MAXPUSHBACK	128
5167
5168u_char	*parsebuf;
5169int	 parseindex;
5170u_char	 pushback_buffer[MAXPUSHBACK];
5171int	 pushback_index = 0;
5172
5173int
5174lgetc(int quotec)
5175{
5176	int		c, next;
5177
5178	if (parsebuf) {
5179		/* Read character from the parsebuffer instead of input. */
5180		if (parseindex >= 0) {
5181			c = parsebuf[parseindex++];
5182			if (c != '\0')
5183				return (c);
5184			parsebuf = NULL;
5185		} else
5186			parseindex++;
5187	}
5188
5189	if (pushback_index)
5190		return (pushback_buffer[--pushback_index]);
5191
5192	if (quotec) {
5193		if ((c = getc(file->stream)) == EOF) {
5194			yyerror("reached end of file while parsing quoted string");
5195			if (popfile() == EOF)
5196				return (EOF);
5197			return (quotec);
5198		}
5199		return (c);
5200	}
5201
5202	while ((c = getc(file->stream)) == '\\') {
5203		next = getc(file->stream);
5204		if (next != '\n') {
5205			c = next;
5206			break;
5207		}
5208		yylval.lineno = file->lineno;
5209		file->lineno++;
5210	}
5211
5212	while (c == EOF) {
5213		if (popfile() == EOF)
5214			return (EOF);
5215		c = getc(file->stream);
5216	}
5217	return (c);
5218}
5219
5220int
5221lungetc(int c)
5222{
5223	if (c == EOF)
5224		return (EOF);
5225	if (parsebuf) {
5226		parseindex--;
5227		if (parseindex >= 0)
5228			return (c);
5229	}
5230	if (pushback_index < MAXPUSHBACK-1)
5231		return (pushback_buffer[pushback_index++] = c);
5232	else
5233		return (EOF);
5234}
5235
5236int
5237findeol(void)
5238{
5239	int	c;
5240
5241	parsebuf = NULL;
5242
5243	/* skip to either EOF or the first real EOL */
5244	while (1) {
5245		if (pushback_index)
5246			c = pushback_buffer[--pushback_index];
5247		else
5248			c = lgetc(0);
5249		if (c == '\n') {
5250			file->lineno++;
5251			break;
5252		}
5253		if (c == EOF)
5254			break;
5255	}
5256	return (ERROR);
5257}
5258
5259int
5260yylex(void)
5261{
5262	u_char	 buf[8096];
5263	u_char	*p, *val;
5264	int	 quotec, next, c;
5265	int	 token;
5266
5267top:
5268	p = buf;
5269	while ((c = lgetc(0)) == ' ' || c == '\t')
5270		; /* nothing */
5271
5272	yylval.lineno = file->lineno;
5273	if (c == '#')
5274		while ((c = lgetc(0)) != '\n' && c != EOF)
5275			; /* nothing */
5276	if (c == '$' && parsebuf == NULL) {
5277		while (1) {
5278			if ((c = lgetc(0)) == EOF)
5279				return (0);
5280
5281			if (p + 1 >= buf + sizeof(buf) - 1) {
5282				yyerror("string too long");
5283				return (findeol());
5284			}
5285			if (isalnum(c) || c == '_') {
5286				*p++ = c;
5287				continue;
5288			}
5289			*p = '\0';
5290			lungetc(c);
5291			break;
5292		}
5293		val = symget(buf);
5294		if (val == NULL) {
5295			yyerror("macro '%s' not defined", buf);
5296			return (findeol());
5297		}
5298		parsebuf = val;
5299		parseindex = 0;
5300		goto top;
5301	}
5302
5303	switch (c) {
5304	case '\'':
5305	case '"':
5306		quotec = c;
5307		while (1) {
5308			if ((c = lgetc(quotec)) == EOF)
5309				return (0);
5310			if (c == '\n') {
5311				file->lineno++;
5312				continue;
5313			} else if (c == '\\') {
5314				if ((next = lgetc(quotec)) == EOF)
5315					return (0);
5316				if (next == quotec || c == ' ' || c == '\t')
5317					c = next;
5318				else if (next == '\n') {
5319					file->lineno++;
5320					continue;
5321				} else
5322					lungetc(next);
5323			} else if (c == quotec) {
5324				*p = '\0';
5325				break;
5326			} else if (c == '\0') {
5327				yyerror("syntax error");
5328				return (findeol());
5329			}
5330			if (p + 1 >= buf + sizeof(buf) - 1) {
5331				yyerror("string too long");
5332				return (findeol());
5333			}
5334			*p++ = c;
5335		}
5336		yylval.v.string = strdup(buf);
5337		if (yylval.v.string == NULL)
5338			err(1, "yylex: strdup");
5339		return (STRING);
5340	case '!':
5341		next = lgetc(0);
5342		if (next == '=')
5343			return (NE);
5344		lungetc(next);
5345		break;
5346	case '<':
5347		next = lgetc(0);
5348		if (next == '>') {
5349			yylval.v.i = PF_OP_XRG;
5350			return (PORTBINARY);
5351		} else if (next == '=')
5352			return (LE);
5353		lungetc(next);
5354		break;
5355	case '>':
5356		next = lgetc(0);
5357		if (next == '<') {
5358			yylval.v.i = PF_OP_IRG;
5359			return (PORTBINARY);
5360		} else if (next == '=')
5361			return (GE);
5362		lungetc(next);
5363		break;
5364	}
5365
5366#define allowed_to_end_number(x) \
5367	(isspace(x) || x == ')' || x ==',' || x == '/' || x == '}' || x == '=')
5368
5369	if (c == '-' || isdigit(c)) {
5370		do {
5371			*p++ = c;
5372			if ((unsigned)(p-buf) >= sizeof(buf)) {
5373				yyerror("string too long");
5374				return (findeol());
5375			}
5376		} while ((c = lgetc(0)) != EOF && isdigit(c));
5377		lungetc(c);
5378		if (p == buf + 1 && buf[0] == '-')
5379			goto nodigits;
5380		if (c == EOF || allowed_to_end_number(c)) {
5381			const char *errstr = NULL;
5382
5383			*p = '\0';
5384			yylval.v.number = strtonum(buf, LLONG_MIN,
5385			    LLONG_MAX, &errstr);
5386			if (errstr) {
5387				yyerror("\"%s\" invalid number: %s",
5388				    buf, errstr);
5389				return (findeol());
5390			}
5391			return (NUMBER);
5392		} else {
5393nodigits:
5394			while (p > buf + 1)
5395				lungetc(*--p);
5396			c = *--p;
5397			if (c == '-')
5398				return (c);
5399		}
5400	}
5401
5402#define allowed_in_string(x) \
5403	(isalnum(x) || (ispunct(x) && x != '(' && x != ')' && \
5404	x != '{' && x != '}' && x != '<' && x != '>' && \
5405	x != '!' && x != '=' && x != '/' && x != '#' && \
5406	x != ','))
5407
5408	if (isalnum(c) || c == ':' || c == '_') {
5409		do {
5410			*p++ = c;
5411			if ((unsigned)(p-buf) >= sizeof(buf)) {
5412				yyerror("string too long");
5413				return (findeol());
5414			}
5415		} while ((c = lgetc(0)) != EOF && (allowed_in_string(c)));
5416		lungetc(c);
5417		*p = '\0';
5418		if ((token = lookup(buf)) == STRING)
5419			if ((yylval.v.string = strdup(buf)) == NULL)
5420				err(1, "yylex: strdup");
5421		return (token);
5422	}
5423	if (c == '\n') {
5424		yylval.lineno = file->lineno;
5425		file->lineno++;
5426	}
5427	if (c == EOF)
5428		return (0);
5429	return (c);
5430}
5431
5432int
5433check_file_secrecy(int fd, const char *fname)
5434{
5435	struct stat	st;
5436
5437	if (fstat(fd, &st)) {
5438		warn("cannot stat %s", fname);
5439		return (-1);
5440	}
5441	if (st.st_uid != 0 && st.st_uid != getuid()) {
5442		warnx("%s: owner not root or current user", fname);
5443		return (-1);
5444	}
5445	if (st.st_mode & (S_IWGRP | S_IXGRP | S_IRWXO)) {
5446		warnx("%s: group writable or world read/writable", fname);
5447		return (-1);
5448	}
5449	return (0);
5450}
5451
5452struct file *
5453pushfile(const char *name, int secret)
5454{
5455	struct file	*nfile;
5456
5457	if ((nfile = calloc(1, sizeof(struct file))) == NULL ||
5458	    (nfile->name = strdup(name)) == NULL) {
5459		if (nfile)
5460			free(nfile);
5461		warn("malloc");
5462		return (NULL);
5463	}
5464	if (TAILQ_FIRST(&files) == NULL && strcmp(nfile->name, "-") == 0) {
5465		nfile->stream = stdin;
5466		free(nfile->name);
5467		if ((nfile->name = strdup("stdin")) == NULL) {
5468			warn("strdup");
5469			free(nfile);
5470			return (NULL);
5471		}
5472	} else if ((nfile->stream = fopen(nfile->name, "r")) == NULL) {
5473		warn("%s", nfile->name);
5474		free(nfile->name);
5475		free(nfile);
5476		return (NULL);
5477	} else if (secret &&
5478	    check_file_secrecy(fileno(nfile->stream), nfile->name)) {
5479		fclose(nfile->stream);
5480		free(nfile->name);
5481		free(nfile);
5482		return (NULL);
5483	}
5484	nfile->lineno = 1;
5485	TAILQ_INSERT_TAIL(&files, nfile, entry);
5486	return (nfile);
5487}
5488
5489int
5490popfile(void)
5491{
5492	struct file	*prev;
5493
5494	if ((prev = TAILQ_PREV(file, files, entry)) != NULL) {
5495		prev->errors += file->errors;
5496		TAILQ_REMOVE(&files, file, entry);
5497		fclose(file->stream);
5498		free(file->name);
5499		free(file);
5500		file = prev;
5501		return (0);
5502	}
5503	return (EOF);
5504}
5505
5506int
5507parse_config(char *filename, struct pfctl *xpf)
5508{
5509	int		 errors = 0;
5510	struct sym	*sym;
5511
5512	pf = xpf;
5513	returnicmpdefault = (ICMP_UNREACH << 8) | ICMP_UNREACH_PORT;
5514	returnicmp6default =
5515	    (ICMP6_DST_UNREACH << 8) | ICMP6_DST_UNREACH_NOPORT;
5516	blockpolicy = PFRULE_DROP;
5517
5518	if ((file = pushfile(filename, 0)) == NULL) {
5519		warn("cannot open the main config file!");
5520		return (-1);
5521	}
5522
5523	yyparse();
5524	errors = file->errors;
5525	popfile();
5526
5527	/* Free macros and check which have not been used. */
5528	while ((sym = TAILQ_FIRST(&symhead))) {
5529		if ((pf->opts & PF_OPT_VERBOSE2) && !sym->used)
5530			fprintf(stderr, "warning: macro '%s' not "
5531			    "used\n", sym->nam);
5532		free(sym->nam);
5533		free(sym->val);
5534		TAILQ_REMOVE(&symhead, sym, entry);
5535		free(sym);
5536	}
5537
5538	return (errors ? -1 : 0);
5539}
5540
5541int
5542symset(const char *nam, const char *val, int persist)
5543{
5544	struct sym	*sym;
5545
5546	TAILQ_FOREACH(sym, &symhead, entry) {
5547		if (strcmp(nam, sym->nam) == 0)
5548			break;
5549	}
5550
5551	if (sym != NULL) {
5552		if (sym->persist == 1)
5553			return (0);
5554		else {
5555			free(sym->nam);
5556			free(sym->val);
5557			TAILQ_REMOVE(&symhead, sym, entry);
5558			free(sym);
5559		}
5560	}
5561	if ((sym = calloc(1, sizeof(*sym))) == NULL)
5562		return (-1);
5563
5564	sym->nam = strdup(nam);
5565	if (sym->nam == NULL) {
5566		free(sym);
5567		return (-1);
5568	}
5569	sym->val = strdup(val);
5570	if (sym->val == NULL) {
5571		free(sym->nam);
5572		free(sym);
5573		return (-1);
5574	}
5575	sym->used = 0;
5576	sym->persist = persist;
5577	TAILQ_INSERT_TAIL(&symhead, sym, entry);
5578	return (0);
5579}
5580
5581int
5582pfctl_cmdline_symset(char *s)
5583{
5584	char	*sym, *val;
5585	int	 ret;
5586
5587	if ((val = strrchr(s, '=')) == NULL)
5588		return (-1);
5589
5590	if ((sym = malloc(strlen(s) - strlen(val) + 1)) == NULL)
5591		err(1, "pfctl_cmdline_symset: malloc");
5592
5593	strlcpy(sym, s, strlen(s) - strlen(val) + 1);
5594
5595	ret = symset(sym, val + 1, 1);
5596	free(sym);
5597
5598	return (ret);
5599}
5600
5601char *
5602symget(const char *nam)
5603{
5604	struct sym	*sym;
5605
5606	TAILQ_FOREACH(sym, &symhead, entry) {
5607		if (strcmp(nam, sym->nam) == 0) {
5608			sym->used = 1;
5609			return (sym->val);
5610		}
5611	}
5612	return (NULL);
5613}
5614
5615void
5616mv_rules(struct pf_ruleset *src, struct pf_ruleset *dst)
5617{
5618	struct pf_rule *r;
5619
5620	while ((r = TAILQ_FIRST(src->rules.active.ptr)) != NULL) {
5621		TAILQ_REMOVE(src->rules.active.ptr, r, entries);
5622		TAILQ_INSERT_TAIL(dst->rules.active.ptr, r, entries);
5623		dst->anchor->match++;
5624	}
5625	src->anchor->match = 0;
5626	while ((r = TAILQ_FIRST(src->rules.inactive.ptr)) != NULL) {
5627		TAILQ_REMOVE(src->rules.inactive.ptr, r, entries);
5628		TAILQ_INSERT_TAIL(dst->rules.inactive.ptr, r, entries);
5629	}
5630}
5631
5632void
5633decide_address_family(struct node_host *n, sa_family_t *af)
5634{
5635	if (*af != 0 || n == NULL)
5636		return;
5637	*af = n->af;
5638	while ((n = n->next) != NULL) {
5639		if (n->af != *af) {
5640			*af = 0;
5641			return;
5642		}
5643	}
5644}
5645
5646int
5647invalid_redirect(struct node_host *nh, sa_family_t af)
5648{
5649	if (!af) {
5650		struct node_host *n;
5651
5652		/* tables and dyniftl are ok without an address family */
5653		for (n = nh; n != NULL; n = n->next) {
5654			if (n->addr.type != PF_ADDR_TABLE &&
5655			    n->addr.type != PF_ADDR_DYNIFTL) {
5656				yyerror("address family not given and "
5657				    "translation address expands to multiple "
5658				    "address families");
5659				return (1);
5660			}
5661		}
5662	}
5663	if (nh == NULL) {
5664		yyerror("no translation address with matching address family "
5665		    "found.");
5666		return (1);
5667	}
5668	return (0);
5669}
5670
5671int
5672atoul(char *s, u_long *ulvalp)
5673{
5674	u_long	 ulval;
5675	char	*ep;
5676
5677	errno = 0;
5678	ulval = strtoul(s, &ep, 0);
5679	if (s[0] == '\0' || *ep != '\0')
5680		return (-1);
5681	if (errno == ERANGE && ulval == ULONG_MAX)
5682		return (-1);
5683	*ulvalp = ulval;
5684	return (0);
5685}
5686
5687int
5688getservice(char *n)
5689{
5690	struct servent	*s;
5691	u_long		 ulval;
5692
5693	if (atoul(n, &ulval) == 0) {
5694		if (ulval > 65535) {
5695			yyerror("illegal port value %lu", ulval);
5696			return (-1);
5697		}
5698		return (htons(ulval));
5699	} else {
5700		s = getservbyname(n, "tcp");
5701		if (s == NULL)
5702			s = getservbyname(n, "udp");
5703		if (s == NULL) {
5704			yyerror("unknown port %s", n);
5705			return (-1);
5706		}
5707		return (s->s_port);
5708	}
5709}
5710
5711int
5712rule_label(struct pf_rule *r, char *s)
5713{
5714	if (s) {
5715		if (strlcpy(r->label, s, sizeof(r->label)) >=
5716		    sizeof(r->label)) {
5717			yyerror("rule label too long (max %d chars)",
5718			    sizeof(r->label)-1);
5719			return (-1);
5720		}
5721	}
5722	return (0);
5723}
5724
5725u_int16_t
5726parseicmpspec(char *w, sa_family_t af)
5727{
5728	const struct icmpcodeent	*p;
5729	u_long				 ulval;
5730	u_int8_t			 icmptype;
5731
5732	if (af == AF_INET)
5733		icmptype = returnicmpdefault >> 8;
5734	else
5735		icmptype = returnicmp6default >> 8;
5736
5737	if (atoul(w, &ulval) == -1) {
5738		if ((p = geticmpcodebyname(icmptype, w, af)) == NULL) {
5739			yyerror("unknown icmp code %s", w);
5740			return (0);
5741		}
5742		ulval = p->code;
5743	}
5744	if (ulval > 255) {
5745		yyerror("invalid icmp code %lu", ulval);
5746		return (0);
5747	}
5748	return (icmptype << 8 | ulval);
5749}
5750
5751int
5752parseport(char *port, struct range *r, int extensions)
5753{
5754	char	*p = strchr(port, ':');
5755
5756	if (p == NULL) {
5757		if ((r->a = getservice(port)) == -1)
5758			return (-1);
5759		r->b = 0;
5760		r->t = PF_OP_NONE;
5761		return (0);
5762	}
5763	if ((extensions & PPORT_STAR) && !strcmp(p+1, "*")) {
5764		*p = 0;
5765		if ((r->a = getservice(port)) == -1)
5766			return (-1);
5767		r->b = 0;
5768		r->t = PF_OP_IRG;
5769		return (0);
5770	}
5771	if ((extensions & PPORT_RANGE)) {
5772		*p++ = 0;
5773		if ((r->a = getservice(port)) == -1 ||
5774		    (r->b = getservice(p)) == -1)
5775			return (-1);
5776		if (r->a == r->b) {
5777			r->b = 0;
5778			r->t = PF_OP_NONE;
5779		} else
5780			r->t = PF_OP_RRG;
5781		return (0);
5782	}
5783	return (-1);
5784}
5785
5786int
5787pfctl_load_anchors(int dev, struct pfctl *pf, struct pfr_buffer *trans)
5788{
5789	struct loadanchors	*la;
5790
5791	TAILQ_FOREACH(la, &loadanchorshead, entries) {
5792		if (pf->opts & PF_OPT_VERBOSE)
5793			fprintf(stderr, "\nLoading anchor %s from %s\n",
5794			    la->anchorname, la->filename);
5795		if (pfctl_rules(dev, la->filename, pf->opts, pf->optimize,
5796		    la->anchorname, trans) == -1)
5797			return (-1);
5798	}
5799
5800	return (0);
5801}
5802
5803int
5804kw_casecmp(const void *k, const void *e)
5805{
5806	return (strcasecmp(k, ((const struct keywords *)e)->k_name));
5807}
5808
5809int
5810map_tos(char *s, int *val)
5811{
5812	/* DiffServ Codepoints and other TOS mappings */
5813	const struct keywords	 toswords[] = {
5814		{ "af11",		IPTOS_DSCP_AF11 },
5815		{ "af12",		IPTOS_DSCP_AF12 },
5816		{ "af13",		IPTOS_DSCP_AF13 },
5817		{ "af21",		IPTOS_DSCP_AF21 },
5818		{ "af22",		IPTOS_DSCP_AF22 },
5819		{ "af23",		IPTOS_DSCP_AF23 },
5820		{ "af31",		IPTOS_DSCP_AF31 },
5821		{ "af32",		IPTOS_DSCP_AF32 },
5822		{ "af33",		IPTOS_DSCP_AF33 },
5823		{ "af41",		IPTOS_DSCP_AF41 },
5824		{ "af42",		IPTOS_DSCP_AF42 },
5825		{ "af43",		IPTOS_DSCP_AF43 },
5826		{ "critical",		IPTOS_PREC_CRITIC_ECP },
5827		{ "cs0",		IPTOS_DSCP_CS0 },
5828		{ "cs1",		IPTOS_DSCP_CS1 },
5829		{ "cs2",		IPTOS_DSCP_CS2 },
5830		{ "cs3",		IPTOS_DSCP_CS3 },
5831		{ "cs4",		IPTOS_DSCP_CS4 },
5832		{ "cs5",		IPTOS_DSCP_CS5 },
5833		{ "cs6",		IPTOS_DSCP_CS6 },
5834		{ "cs7",		IPTOS_DSCP_CS7 },
5835		{ "ef",			IPTOS_DSCP_EF },
5836		{ "inetcontrol",	IPTOS_PREC_INTERNETCONTROL },
5837		{ "lowdelay",		IPTOS_LOWDELAY },
5838		{ "netcontrol",		IPTOS_PREC_NETCONTROL },
5839		{ "reliability",	IPTOS_RELIABILITY },
5840		{ "throughput",		IPTOS_THROUGHPUT }
5841	};
5842	const struct keywords	*p;
5843
5844	p = bsearch(s, toswords, sizeof(toswords)/sizeof(toswords[0]),
5845	    sizeof(toswords[0]), kw_casecmp);
5846
5847	if (p) {
5848		*val = p->k_val;
5849		return (1);
5850	}
5851	return (0);
5852}
5853