parse.y revision 1.659 
1/*	$OpenBSD: parse.y,v 1.659 2017/05/15 11:23:25 mikeb 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} filter_opts;
286
287struct antispoof_opts {
288	char			*label;
289	u_int			 rtableid;
290} antispoof_opts;
291
292struct scrub_opts {
293	int			marker;
294	int			nodf;
295	int			minttl;
296	int			maxmss;
297	int			settos;
298	int			randomid;
299	int			reassemble_tcp;
300} scrub_opts;
301
302struct node_sc {
303	struct node_queue_bw	m1;
304	u_int			d;
305	struct node_queue_bw	m2;
306};
307
308struct node_fq {
309	u_int			flows;
310	u_int			quantum;
311	u_int			target;
312	u_int			interval;
313};
314
315struct queue_opts {
316	int		 marker;
317#define	QOM_BWSPEC	0x01
318#define	QOM_PARENT	0x02
319#define	QOM_DEFAULT	0x04
320#define	QOM_QLIMIT	0x08
321#define	QOM_FLOWS	0x10
322#define	QOM_QUANTUM	0x20
323	struct node_sc	 realtime;
324	struct node_sc	 linkshare;
325	struct node_sc	 upperlimit;
326	struct node_fq	 flowqueue;
327	char		*parent;
328	int		 flags;
329	u_int		 qlimit;
330} queue_opts;
331
332struct table_opts {
333	int			flags;
334	int			init_addr;
335	struct node_tinithead	init_nodes;
336} table_opts;
337
338struct node_hfsc_opts	 hfsc_opts;
339struct node_state_opt	*keep_state_defaults = NULL;
340
341int		 disallow_table(struct node_host *, const char *);
342int		 disallow_urpf_failed(struct node_host *, const char *);
343int		 disallow_alias(struct node_host *, const char *);
344int		 rule_consistent(struct pf_rule *, int);
345int		 process_tabledef(char *, struct table_opts *);
346void		 expand_label_str(char *, size_t, const char *, const char *);
347void		 expand_label_if(const char *, char *, size_t, const char *);
348void		 expand_label_addr(const char *, char *, size_t, u_int8_t,
349		    struct node_host *);
350void		 expand_label_port(const char *, char *, size_t,
351		    struct node_port *);
352void		 expand_label_proto(const char *, char *, size_t, u_int8_t);
353void		 expand_label_nr(const char *, char *, size_t);
354void		 expand_label(char *, size_t, const char *, u_int8_t,
355		    struct node_host *, struct node_port *, struct node_host *,
356		    struct node_port *, u_int8_t);
357int		 expand_divertspec(struct pf_rule *, struct divertspec *);
358int		 collapse_redirspec(struct pf_pool *, struct pf_rule *,
359		    struct redirspec *rs, u_int8_t);
360int		 apply_redirspec(struct pf_pool *, struct pf_rule *,
361		    struct redirspec *, int, struct node_port *);
362void		 expand_rule(struct pf_rule *, int, struct node_if *,
363		    struct redirspec *, struct redirspec *, struct redirspec *,
364		    struct node_proto *,
365		    struct node_os *, struct node_host *, struct node_port *,
366		    struct node_host *, struct node_port *, struct node_uid *,
367		    struct node_gid *, struct node_if *, struct node_icmp *,
368		    const char *);
369int		 expand_queue(char *, struct node_if *, struct queue_opts *);
370int		 expand_skip_interface(struct node_if *);
371
372int	 getservice(char *);
373int	 rule_label(struct pf_rule *, char *);
374
375void	 mv_rules(struct pf_ruleset *, struct pf_ruleset *);
376void	 decide_address_family(struct node_host *, sa_family_t *);
377int	 invalid_redirect(struct node_host *, sa_family_t);
378u_int16_t parseicmpspec(char *, sa_family_t);
379int	 kw_casecmp(const void *, const void *);
380int	 map_tos(char *string, int *);
381
382TAILQ_HEAD(loadanchorshead, loadanchors)
383    loadanchorshead = TAILQ_HEAD_INITIALIZER(loadanchorshead);
384
385struct loadanchors {
386	TAILQ_ENTRY(loadanchors)	 entries;
387	char				*anchorname;
388	char				*filename;
389};
390
391typedef struct {
392	union {
393		int64_t			 number;
394		double			 probability;
395		int			 i;
396		char			*string;
397		u_int			 rtableid;
398		u_int16_t		 weight;
399		struct {
400			u_int8_t	 b1;
401			u_int8_t	 b2;
402			u_int16_t	 w;
403			u_int16_t	 w2;
404		}			 b;
405		struct range		 range;
406		struct node_if		*interface;
407		struct node_proto	*proto;
408		struct node_icmp	*icmp;
409		struct node_host	*host;
410		struct node_os		*os;
411		struct node_port	*port;
412		struct node_uid		*uid;
413		struct node_gid		*gid;
414		struct node_state_opt	*state_opt;
415		struct peer		 peer;
416		struct {
417			struct peer	 src, dst;
418			struct node_os	*src_os;
419		}			 fromto;
420		struct redirection	*redirection;
421		struct {
422			int			 action;
423			struct node_state_opt	*options;
424		}			 keep_state;
425		struct {
426			u_int8_t	 log;
427			u_int8_t	 logif;
428			u_int8_t	 quick;
429		}			 logquick;
430		struct {
431			int		 neg;
432			char		*name;
433		}			 tagged;
434		struct pf_poolhashkey	*hashkey;
435		struct node_queue	*queue;
436		struct node_queue_opt	 queue_options;
437		struct node_queue_bw	 queue_bwspec;
438		struct node_qassign	 qassign;
439		struct node_sc		 sc;
440		struct filter_opts	 filter_opts;
441		struct antispoof_opts	 antispoof_opts;
442		struct queue_opts	 queue_opts;
443		struct scrub_opts	 scrub_opts;
444		struct table_opts	 table_opts;
445		struct pool_opts	 pool_opts;
446		struct node_hfsc_opts	 hfsc_opts;
447	} v;
448	int lineno;
449} YYSTYPE;
450
451#define PPORT_RANGE	1
452#define PPORT_STAR	2
453int	parseport(char *, struct range *r, int);
454
455#define DYNIF_MULTIADDR(addr) ((addr).type == PF_ADDR_DYNIFTL && \
456	(!((addr).iflags & PFI_AFLAG_NOALIAS) ||		 \
457	!isdigit((unsigned char)(addr).v.ifname[strlen((addr).v.ifname)-1])))
458
459%}
460
461%token	PASS BLOCK MATCH SCRUB RETURN IN OS OUT LOG QUICK ON FROM TO FLAGS
462%token	RETURNRST RETURNICMP RETURNICMP6 PROTO INET INET6 ALL ANY ICMPTYPE
463%token	ICMP6TYPE CODE KEEP MODULATE STATE PORT BINATTO NODF
464%token	MINTTL ERROR ALLOWOPTS FILENAME ROUTETO DUPTO REPLYTO NO LABEL
465%token	NOROUTE URPFFAILED FRAGMENT USER GROUP MAXMSS MAXIMUM TTL TOS DROP TABLE
466%token	REASSEMBLE ANCHOR
467%token	SET OPTIMIZATION TIMEOUT LIMIT LOGINTERFACE BLOCKPOLICY RANDOMID
468%token	SYNPROXY FINGERPRINTS NOSYNC DEBUG SKIP HOSTID
469%token	ANTISPOOF FOR INCLUDE MATCHES
470%token	BITMASK RANDOM SOURCEHASH ROUNDROBIN LEASTSTATES STATICPORT PROBABILITY
471%token	WEIGHT BANDWIDTH FLOWS QUANTUM
472%token	QUEUE PRIORITY QLIMIT RTABLE RDOMAIN MINIMUM BURST PARENT
473%token	LOAD RULESET_OPTIMIZATION RTABLE RDOMAIN PRIO ONCE DEFAULT
474%token	STICKYADDRESS MAXSRCSTATES MAXSRCNODES SOURCETRACK GLOBAL RULE
475%token	MAXSRCCONN MAXSRCCONNRATE OVERLOAD FLUSH SLOPPY PFLOW
476%token	TAGGED TAG IFBOUND FLOATING STATEPOLICY STATEDEFAULTS ROUTE
477%token	DIVERTTO DIVERTREPLY DIVERTPACKET NATTO AFTO RDRTO RECEIVEDON NE LE GE
478%token	<v.string>		STRING
479%token	<v.number>		NUMBER
480%token	<v.i>			PORTBINARY
481%type	<v.interface>		interface if_list if_item_not if_item
482%type	<v.number>		number icmptype icmp6type uid gid
483%type	<v.number>		tos not yesno optnodf
484%type	<v.probability>		probability
485%type	<v.weight>		optweight
486%type	<v.i>			dir af optimizer
487%type	<v.i>			sourcetrack flush unaryop statelock
488%type	<v.b>			action
489%type	<v.b>			flags flag blockspec prio
490%type	<v.range>		portplain portstar portrange
491%type	<v.hashkey>		hashkey
492%type	<v.proto>		proto proto_list proto_item
493%type	<v.number>		protoval
494%type	<v.icmp>		icmpspec
495%type	<v.icmp>		icmp_list icmp_item
496%type	<v.icmp>		icmp6_list icmp6_item
497%type	<v.number>		reticmpspec reticmp6spec
498%type	<v.fromto>		fromto
499%type	<v.peer>		ipportspec from to
500%type	<v.host>		ipspec xhost host dynaddr host_list
501%type	<v.host>		table_host_list tablespec
502%type	<v.host>		redir_host_list redirspec
503%type	<v.host>		route_host route_host_list routespec
504%type	<v.os>			os xos os_list
505%type	<v.port>		portspec port_list port_item
506%type	<v.uid>			uids uid_list uid_item
507%type	<v.gid>			gids gid_list gid_item
508%type	<v.redirection>		redirpool
509%type	<v.string>		label stringall anchorname
510%type	<v.string>		string varstring numberstring
511%type	<v.keep_state>		keep
512%type	<v.state_opt>		state_opt_spec state_opt_list state_opt_item
513%type	<v.logquick>		logquick quick log logopts logopt
514%type	<v.interface>		antispoof_ifspc antispoof_iflst antispoof_if
515%type	<v.qassign>		qname
516%type	<v.queue_bwspec>	bandwidth
517%type	<v.filter_opts>		filter_opts filter_opt filter_opts_l
518%type	<v.filter_opts>		filter_sets filter_set filter_sets_l
519%type	<v.antispoof_opts>	antispoof_opts antispoof_opt antispoof_opts_l
520%type	<v.queue_opts>		queue_opts queue_opt queue_opts_l optscs
521%type	<v.sc>			scspec
522%type	<v.scrub_opts>		scrub_opts scrub_opt scrub_opts_l
523%type	<v.table_opts>		table_opts table_opt table_opts_l
524%type	<v.pool_opts>		pool_opts pool_opt pool_opts_l
525%%
526
527ruleset		: /* empty */
528		| ruleset include '\n'
529		| ruleset '\n'
530		| ruleset option '\n'
531		| ruleset pfrule '\n'
532		| ruleset anchorrule '\n'
533		| ruleset loadrule '\n'
534		| ruleset queuespec '\n'
535		| ruleset varset '\n'
536		| ruleset antispoof '\n'
537		| ruleset tabledef '\n'
538		| '{' fakeanchor '}' '\n';
539		| ruleset error '\n'		{ file->errors++; }
540		;
541
542include		: INCLUDE STRING		{
543			struct file	*nfile;
544
545			if ((nfile = pushfile($2, 0)) == NULL) {
546				yyerror("failed to include file %s", $2);
547				free($2);
548				YYERROR;
549			}
550			free($2);
551
552			file = nfile;
553			lungetc('\n');
554		}
555		;
556
557/*
558 * apply to previously specified rule: must be careful to note
559 * what that is: pf or nat or binat or rdr
560 */
561fakeanchor	: fakeanchor '\n'
562		| fakeanchor anchorrule '\n'
563		| fakeanchor pfrule '\n'
564		| fakeanchor error '\n'
565		;
566
567optimizer	: string	{
568			if (!strcmp($1, "none"))
569				$$ = 0;
570			else if (!strcmp($1, "basic"))
571				$$ = PF_OPTIMIZE_BASIC;
572			else if (!strcmp($1, "profile"))
573				$$ = PF_OPTIMIZE_BASIC | PF_OPTIMIZE_PROFILE;
574			else {
575				yyerror("unknown ruleset-optimization %s", $1);
576				YYERROR;
577			}
578		}
579		;
580
581optnodf		: /* empty */	{ $$ = 0; }
582		| NODF		{ $$ = 1; }
583		;
584
585option		: SET REASSEMBLE yesno optnodf		{
586			pfctl_set_reassembly(pf, $3, $4);
587		}
588		| SET OPTIMIZATION STRING		{
589			if (pfctl_set_optimization(pf, $3) != 0) {
590				yyerror("unknown optimization %s", $3);
591				free($3);
592				YYERROR;
593			}
594			free($3);
595		}
596		| SET RULESET_OPTIMIZATION optimizer {
597			if (!(pf->opts & PF_OPT_OPTIMIZE)) {
598				pf->opts |= PF_OPT_OPTIMIZE;
599				pf->optimize = $3;
600			}
601		}
602		| SET TIMEOUT timeout_spec
603		| SET TIMEOUT '{' optnl timeout_list '}'
604		| SET LIMIT limit_spec
605		| SET LIMIT '{' optnl limit_list '}'
606		| SET LOGINTERFACE stringall		{
607			if (pfctl_set_logif(pf, $3) != 0) {
608				yyerror("error setting loginterface %s", $3);
609				free($3);
610				YYERROR;
611			}
612			free($3);
613		}
614		| SET HOSTID number {
615			if ($3 == 0 || $3 > UINT_MAX) {
616				yyerror("hostid must be non-zero");
617				YYERROR;
618			}
619			pfctl_set_hostid(pf, $3);
620		}
621		| SET BLOCKPOLICY DROP	{
622			if (pf->opts & PF_OPT_VERBOSE)
623				printf("set block-policy drop\n");
624			blockpolicy = PFRULE_DROP;
625		}
626		| SET BLOCKPOLICY RETURN {
627			if (pf->opts & PF_OPT_VERBOSE)
628				printf("set block-policy return\n");
629			blockpolicy = PFRULE_RETURN;
630		}
631		| SET FINGERPRINTS STRING {
632			if (pf->opts & PF_OPT_VERBOSE)
633				printf("set fingerprints \"%s\"\n", $3);
634			if (!pf->anchor->name[0]) {
635				if (pfctl_file_fingerprints(pf->dev,
636				    pf->opts, $3)) {
637					yyerror("error loading "
638					    "fingerprints %s", $3);
639					free($3);
640					YYERROR;
641				}
642			}
643			free($3);
644		}
645		| SET STATEPOLICY statelock {
646			if (pf->opts & PF_OPT_VERBOSE)
647				switch ($3) {
648				case 0:
649					printf("set state-policy floating\n");
650					break;
651				case PFRULE_IFBOUND:
652					printf("set state-policy if-bound\n");
653					break;
654				}
655			default_statelock = $3;
656		}
657		| SET DEBUG STRING {
658			if (pfctl_set_debug(pf, $3) != 0) {
659				yyerror("error setting debuglevel %s", $3);
660				free($3);
661				YYERROR;
662			}
663			free($3);
664		}
665		| SET DEBUG DEBUG {
666			if (pfctl_set_debug(pf, "debug") != 0) {
667				yyerror("error setting debuglevel %s", "debug");
668				YYERROR;
669			}
670		}
671		| SET SKIP interface {
672			if (expand_skip_interface($3) != 0) {
673				yyerror("error setting skip interface(s)");
674				YYERROR;
675			}
676		}
677		| SET STATEDEFAULTS state_opt_list {
678			if (keep_state_defaults != NULL) {
679				yyerror("cannot redefine state-defaults");
680				YYERROR;
681			}
682			keep_state_defaults = $3;
683		}
684		;
685
686stringall	: STRING	{ $$ = $1; }
687		| ALL		{
688			if (($$ = strdup("all")) == NULL) {
689				err(1, "stringall: strdup");
690			}
691		}
692		;
693
694string		: STRING string				{
695			if (asprintf(&$$, "%s %s", $1, $2) == -1)
696				err(1, "string: asprintf");
697			free($1);
698			free($2);
699		}
700		| STRING
701		;
702
703varstring	: numberstring varstring 		{
704			if (asprintf(&$$, "%s %s", $1, $2) == -1)
705				err(1, "string: asprintf");
706			free($1);
707			free($2);
708		}
709		| numberstring
710		;
711
712numberstring	: NUMBER				{
713			char	*s;
714			if (asprintf(&s, "%lld", $1) == -1) {
715				yyerror("string: asprintf");
716				YYERROR;
717			}
718			$$ = s;
719		}
720		| STRING
721		;
722
723varset		: STRING '=' varstring	{
724			char *s = $1;
725			if (pf->opts & PF_OPT_VERBOSE)
726				printf("%s = \"%s\"\n", $1, $3);
727			while (*s++) {
728				if (isspace((unsigned char)*s)) {
729					yyerror("macro name cannot contain "
730					    "whitespace");
731					YYERROR;
732				}
733			}
734			if (symset($1, $3, 0) == -1)
735				err(1, "cannot store variable %s", $1);
736			free($1);
737			free($3);
738		}
739		;
740
741anchorname	: STRING			{ $$ = $1; }
742		| /* empty */			{ $$ = NULL; }
743		;
744
745pfa_anchorlist	: /* empty */
746		| pfa_anchorlist '\n'
747		| pfa_anchorlist pfrule '\n'
748		| pfa_anchorlist anchorrule '\n'
749		| pfa_anchorlist include '\n'
750		;
751
752pfa_anchor	: '{'
753		{
754			char ta[PF_ANCHOR_NAME_SIZE];
755			struct pf_ruleset *rs;
756
757			/* steping into a brace anchor */
758			pf->asd++;
759			pf->bn++;
760			pf->brace = 1;
761
762			/*
763			 * Anchor contents are parsed before the anchor rule
764			 * production completes, so we don't know the real
765			 * location yet. Create a holding ruleset in the root;
766			 * contents will be moved afterwards.
767			 */
768			snprintf(ta, PF_ANCHOR_NAME_SIZE, "_%d", pf->bn);
769			rs = pf_find_or_create_ruleset(ta);
770			if (rs == NULL)
771				err(1, "pfa_anchor: pf_find_or_create_ruleset");
772			pf->astack[pf->asd] = rs->anchor;
773			pf->anchor = rs->anchor;
774		} '\n' pfa_anchorlist '}'
775		{
776			pf->alast = pf->anchor;
777			pf->asd--;
778			pf->anchor = pf->astack[pf->asd];
779		}
780		| /* empty */
781		;
782
783anchorrule	: ANCHOR anchorname dir quick interface af proto fromto
784		    filter_opts pfa_anchor
785		{
786			struct pf_rule	r;
787			struct node_proto	*proto;
788
789			if ($2 && ($2[0] == '_' || strstr($2, "/_") != NULL)) {
790				free($2);
791				yyerror("anchor names beginning with '_' "
792				    "are reserved for internal use");
793				YYERROR;
794			}
795
796			memset(&r, 0, sizeof(r));
797			if (pf->astack[pf->asd + 1]) {
798				if ($2 && strchr($2, '/') != NULL) {
799					free($2);
800					yyerror("anchor paths containing '/' "
801				    	    "cannot be used for inline anchors.");
802					YYERROR;
803				}
804
805				/* Move inline rules into relative location. */
806				pf_anchor_setup(&r,
807				    &pf->astack[pf->asd]->ruleset,
808				    $2 ? $2 : pf->alast->name);
809
810				if (r.anchor == NULL)
811					err(1, "anchorrule: unable to "
812					    "create ruleset");
813
814				if (pf->alast != r.anchor) {
815					if (r.anchor->match) {
816						yyerror("inline anchor '%s' "
817						    "already exists",
818						    r.anchor->name);
819						YYERROR;
820					}
821					mv_rules(&pf->alast->ruleset,
822					    &r.anchor->ruleset);
823				}
824				pf_remove_if_empty_ruleset(&pf->alast->ruleset);
825				pf->alast = r.anchor;
826			} else {
827				if (!$2) {
828					yyerror("anchors without explicit "
829					    "rules must specify a name");
830					YYERROR;
831				}
832			}
833			r.direction = $3;
834			r.quick = $4.quick;
835			r.af = $6;
836			r.prob = $9.prob;
837			r.rtableid = $9.rtableid;
838
839			if ($9.tag)
840				if (strlcpy(r.tagname, $9.tag,
841				    PF_TAG_NAME_SIZE) >= PF_TAG_NAME_SIZE) {
842					yyerror("tag too long, max %u chars",
843					    PF_TAG_NAME_SIZE - 1);
844					YYERROR;
845				}
846			if ($9.match_tag)
847				if (strlcpy(r.match_tagname, $9.match_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			r.match_tag_not = $9.match_tag_not;
854			if (rule_label(&r, $9.label))
855				YYERROR;
856			free($9.label);
857			r.flags = $9.flags.b1;
858			r.flagset = $9.flags.b2;
859			if (($9.flags.b1 & $9.flags.b2) != $9.flags.b1) {
860				yyerror("flags always false");
861				YYERROR;
862			}
863			if ($9.flags.b1 || $9.flags.b2 || $8.src_os) {
864				for (proto = $7; proto != NULL &&
865				    proto->proto != IPPROTO_TCP;
866				    proto = proto->next)
867					;	/* nothing */
868				if (proto == NULL && $7 != NULL) {
869					if ($9.flags.b1 || $9.flags.b2)
870						yyerror(
871						    "flags only apply to tcp");
872					if ($8.src_os)
873						yyerror(
874						    "OS fingerprinting only "
875						    "applies to tcp");
876					YYERROR;
877				}
878			}
879
880			r.tos = $9.tos;
881
882			if ($9.keep.action) {
883				yyerror("cannot specify state handling "
884				    "on anchors");
885				YYERROR;
886			}
887
888			if ($9.route.rt) {
889				yyerror("cannot specify route handling "
890				    "on anchors");
891				YYERROR;
892			}
893
894			if ($9.marker & FOM_ONCE) {
895				yyerror("cannot specify 'once' "
896				    "on anchors");
897				YYERROR;
898			}
899
900			if ($9.match_tag)
901				if (strlcpy(r.match_tagname, $9.match_tag,
902				    PF_TAG_NAME_SIZE) >= PF_TAG_NAME_SIZE) {
903					yyerror("tag too long, max %u chars",
904					    PF_TAG_NAME_SIZE - 1);
905					YYERROR;
906				}
907			r.match_tag_not = $9.match_tag_not;
908			if ($9.marker & FOM_PRIO) {
909				if ($9.prio == 0)
910					r.prio = PF_PRIO_ZERO;
911				else
912					r.prio = $9.prio;
913			}
914			if ($9.marker & FOM_SETPRIO) {
915				r.set_prio[0] = $9.set_prio[0];
916				r.set_prio[1] = $9.set_prio[1];
917				r.scrub_flags |= PFSTATE_SETPRIO;
918			}
919
920			decide_address_family($8.src.host, &r.af);
921			decide_address_family($8.dst.host, &r.af);
922
923			expand_rule(&r, 0, $5, NULL, NULL, NULL, $7, $8.src_os,
924			    $8.src.host, $8.src.port, $8.dst.host, $8.dst.port,
925			    $9.uid, $9.gid, $9.rcv, $9.icmpspec,
926			    pf->astack[pf->asd + 1] ? pf->alast->name : $2);
927			free($2);
928			pf->astack[pf->asd + 1] = NULL;
929		}
930		;
931
932loadrule	: LOAD ANCHOR string FROM string	{
933			struct loadanchors	*loadanchor;
934
935			if (strlen(pf->anchor->name) + 1 +
936			    strlen($3) >= PATH_MAX) {
937				yyerror("anchorname %s too long, max %u\n",
938				    $3, PATH_MAX - 1);
939				free($3);
940				YYERROR;
941			}
942			loadanchor = calloc(1, sizeof(struct loadanchors));
943			if (loadanchor == NULL)
944				err(1, "loadrule: calloc");
945			if ((loadanchor->anchorname = malloc(PATH_MAX)) ==
946			    NULL)
947				err(1, "loadrule: malloc");
948			if (pf->anchor->name[0])
949				snprintf(loadanchor->anchorname, PATH_MAX,
950				    "%s/%s", pf->anchor->name, $3);
951			else
952				strlcpy(loadanchor->anchorname, $3, PATH_MAX);
953			if ((loadanchor->filename = strdup($5)) == NULL)
954				err(1, "loadrule: strdup");
955
956			TAILQ_INSERT_TAIL(&loadanchorshead, loadanchor,
957			    entries);
958
959			free($3);
960			free($5);
961		};
962
963scrub_opts	:	{
964				bzero(&scrub_opts, sizeof scrub_opts);
965			}
966		    scrub_opts_l
967			{ $$ = scrub_opts; }
968		;
969
970scrub_opts_l	: scrub_opts_l comma scrub_opt
971		| scrub_opt
972		;
973
974scrub_opt	: NODF	{
975			if (scrub_opts.nodf) {
976				yyerror("no-df cannot be respecified");
977				YYERROR;
978			}
979			scrub_opts.nodf = 1;
980		}
981		| MINTTL NUMBER {
982			if (scrub_opts.marker & FOM_MINTTL) {
983				yyerror("min-ttl cannot be respecified");
984				YYERROR;
985			}
986			if ($2 < 0 || $2 > 255) {
987				yyerror("illegal min-ttl value %d", $2);
988				YYERROR;
989			}
990			scrub_opts.marker |= FOM_MINTTL;
991			scrub_opts.minttl = $2;
992		}
993		| MAXMSS NUMBER {
994			if (scrub_opts.marker & FOM_MAXMSS) {
995				yyerror("max-mss cannot be respecified");
996				YYERROR;
997			}
998			if ($2 < 0 || $2 > 65535) {
999				yyerror("illegal max-mss value %d", $2);
1000				YYERROR;
1001			}
1002			scrub_opts.marker |= FOM_MAXMSS;
1003			scrub_opts.maxmss = $2;
1004		}
1005		| REASSEMBLE STRING {
1006			if (strcasecmp($2, "tcp") != 0) {
1007				yyerror("scrub reassemble supports only tcp, "
1008				    "not '%s'", $2);
1009				free($2);
1010				YYERROR;
1011			}
1012			free($2);
1013			if (scrub_opts.reassemble_tcp) {
1014				yyerror("reassemble tcp cannot be respecified");
1015				YYERROR;
1016			}
1017			scrub_opts.reassemble_tcp = 1;
1018		}
1019		| RANDOMID {
1020			if (scrub_opts.randomid) {
1021				yyerror("random-id cannot be respecified");
1022				YYERROR;
1023			}
1024			scrub_opts.randomid = 1;
1025		}
1026		;
1027
1028antispoof	: ANTISPOOF logquick antispoof_ifspc af antispoof_opts {
1029			struct pf_rule		 r;
1030			struct node_host	*h = NULL, *hh;
1031			struct node_if		*i, *j;
1032
1033			for (i = $3; i; i = i->next) {
1034				bzero(&r, sizeof(r));
1035
1036				r.action = PF_DROP;
1037				r.direction = PF_IN;
1038				r.log = $2.log;
1039				r.logif = $2.logif;
1040				r.quick = $2.quick;
1041				r.af = $4;
1042				if (rule_label(&r, $5.label))
1043					YYERROR;
1044				r.rtableid = $5.rtableid;
1045				j = calloc(1, sizeof(struct node_if));
1046				if (j == NULL)
1047					err(1, "antispoof: calloc");
1048				if (strlcpy(j->ifname, i->ifname,
1049				    sizeof(j->ifname)) >= sizeof(j->ifname)) {
1050					free(j);
1051					yyerror("interface name too long");
1052					YYERROR;
1053				}
1054				j->not = 1;
1055				if (i->dynamic) {
1056					h = calloc(1, sizeof(*h));
1057					if (h == NULL)
1058						err(1, "address: calloc");
1059					h->addr.type = PF_ADDR_DYNIFTL;
1060					set_ipmask(h, 128);
1061					if (strlcpy(h->addr.v.ifname, i->ifname,
1062					    sizeof(h->addr.v.ifname)) >=
1063					    sizeof(h->addr.v.ifname)) {
1064						free(h);
1065						yyerror(
1066						    "interface name too long");
1067						YYERROR;
1068					}
1069					hh = malloc(sizeof(*hh));
1070					if (hh == NULL)
1071						 err(1, "address: malloc");
1072					bcopy(h, hh, sizeof(*hh));
1073					h->addr.iflags = PFI_AFLAG_NETWORK;
1074				} else {
1075					h = ifa_lookup(j->ifname,
1076					    PFI_AFLAG_NETWORK);
1077					hh = NULL;
1078				}
1079
1080				if (h != NULL)
1081					expand_rule(&r, 0, j, NULL, NULL, NULL,
1082					    NULL, NULL, h, NULL, NULL, NULL,
1083					    NULL, NULL, NULL, NULL, "");
1084
1085				if ((i->ifa_flags & IFF_LOOPBACK) == 0) {
1086					bzero(&r, sizeof(r));
1087
1088					r.action = PF_DROP;
1089					r.direction = PF_IN;
1090					r.log = $2.log;
1091					r.logif = $2.logif;
1092					r.quick = $2.quick;
1093					r.af = $4;
1094					if (rule_label(&r, $5.label))
1095						YYERROR;
1096					r.rtableid = $5.rtableid;
1097					if (hh != NULL)
1098						h = hh;
1099					else
1100						h = ifa_lookup(i->ifname, 0);
1101					if (h != NULL)
1102						expand_rule(&r, 0, NULL, NULL,
1103						    NULL, NULL, NULL, NULL, h,
1104						    NULL, NULL, NULL, NULL,
1105						    NULL, NULL, NULL, "");
1106				} else
1107					free(hh);
1108			}
1109			free($5.label);
1110		}
1111		;
1112
1113antispoof_ifspc	: FOR antispoof_if			{ $$ = $2; }
1114		| FOR '{' optnl antispoof_iflst '}'	{ $$ = $4; }
1115		;
1116
1117antispoof_iflst	: antispoof_if optnl			{ $$ = $1; }
1118		| antispoof_iflst comma antispoof_if optnl {
1119			$1->tail->next = $3;
1120			$1->tail = $3;
1121			$$ = $1;
1122		}
1123		;
1124
1125antispoof_if	: if_item				{ $$ = $1; }
1126		| '(' if_item ')'			{
1127			$2->dynamic = 1;
1128			$$ = $2;
1129		}
1130		;
1131
1132antispoof_opts	:	{
1133				bzero(&antispoof_opts, sizeof antispoof_opts);
1134				antispoof_opts.rtableid = -1;
1135			}
1136		    antispoof_opts_l
1137			{ $$ = antispoof_opts; }
1138		| /* empty */	{
1139			bzero(&antispoof_opts, sizeof antispoof_opts);
1140			antispoof_opts.rtableid = -1;
1141			$$ = antispoof_opts;
1142		}
1143		;
1144
1145antispoof_opts_l	: antispoof_opts_l antispoof_opt
1146			| antispoof_opt
1147			;
1148
1149antispoof_opt	: LABEL label	{
1150			if (antispoof_opts.label) {
1151				yyerror("label cannot be redefined");
1152				YYERROR;
1153			}
1154			antispoof_opts.label = $2;
1155		}
1156		| RTABLE NUMBER				{
1157			if ($2 < 0 || $2 > RT_TABLEID_MAX) {
1158				yyerror("invalid rtable id");
1159				YYERROR;
1160			}
1161			antispoof_opts.rtableid = $2;
1162		}
1163		;
1164
1165not		: '!'		{ $$ = 1; }
1166		| /* empty */	{ $$ = 0; }
1167		;
1168
1169tabledef	: TABLE '<' STRING '>' table_opts {
1170			struct node_host	 *h, *nh;
1171			struct node_tinit	 *ti, *nti;
1172
1173			if (strlen($3) >= PF_TABLE_NAME_SIZE) {
1174				yyerror("table name too long, max %d chars",
1175				    PF_TABLE_NAME_SIZE - 1);
1176				free($3);
1177				YYERROR;
1178			}
1179			if (process_tabledef($3, &$5)) {
1180				free($3);
1181				YYERROR;
1182			}
1183			free($3);
1184			for (ti = SIMPLEQ_FIRST(&$5.init_nodes); ti != NULL;
1185			    ti = nti) {
1186				if (ti->file)
1187					free(ti->file);
1188				for (h = ti->host; h != NULL; h = nh) {
1189					nh = h->next;
1190					free(h);
1191				}
1192				nti = SIMPLEQ_NEXT(ti, entries);
1193				free(ti);
1194			}
1195		}
1196		;
1197
1198table_opts	:	{
1199			bzero(&table_opts, sizeof table_opts);
1200			SIMPLEQ_INIT(&table_opts.init_nodes);
1201		}
1202		    table_opts_l
1203			{ $$ = table_opts; }
1204		| /* empty */
1205			{
1206			bzero(&table_opts, sizeof table_opts);
1207			SIMPLEQ_INIT(&table_opts.init_nodes);
1208			$$ = table_opts;
1209		}
1210		;
1211
1212table_opts_l	: table_opts_l table_opt
1213		| table_opt
1214		;
1215
1216table_opt	: STRING		{
1217			if (!strcmp($1, "const"))
1218				table_opts.flags |= PFR_TFLAG_CONST;
1219			else if (!strcmp($1, "persist"))
1220				table_opts.flags |= PFR_TFLAG_PERSIST;
1221			else if (!strcmp($1, "counters"))
1222				table_opts.flags |= PFR_TFLAG_COUNTERS;
1223			else {
1224				yyerror("invalid table option '%s'", $1);
1225				free($1);
1226				YYERROR;
1227			}
1228			free($1);
1229		}
1230		| '{' optnl '}'		{ table_opts.init_addr = 1; }
1231		| '{' optnl table_host_list '}'	{
1232			struct node_host	*n;
1233			struct node_tinit	*ti;
1234
1235			for (n = $3; n != NULL; n = n->next) {
1236				switch (n->addr.type) {
1237				case PF_ADDR_ADDRMASK:
1238					continue; /* ok */
1239				case PF_ADDR_RANGE:
1240					yyerror("address ranges are not "
1241					    "permitted inside tables");
1242					break;
1243				case PF_ADDR_DYNIFTL:
1244					yyerror("dynamic addresses are not "
1245					    "permitted inside tables");
1246					break;
1247				case PF_ADDR_TABLE:
1248					yyerror("tables cannot contain tables");
1249					break;
1250				case PF_ADDR_NOROUTE:
1251					yyerror("\"no-route\" is not permitted "
1252					    "inside tables");
1253					break;
1254				case PF_ADDR_URPFFAILED:
1255					yyerror("\"urpf-failed\" is not "
1256					    "permitted inside tables");
1257					break;
1258				default:
1259					yyerror("unknown address type %d",
1260					    n->addr.type);
1261				}
1262				YYERROR;
1263			}
1264			if (!(ti = calloc(1, sizeof(*ti))))
1265				err(1, "table_opt: calloc");
1266			ti->host = $3;
1267			SIMPLEQ_INSERT_TAIL(&table_opts.init_nodes, ti,
1268			    entries);
1269			table_opts.init_addr = 1;
1270		}
1271		| FILENAME STRING	{
1272			struct node_tinit	*ti;
1273
1274			if (!(ti = calloc(1, sizeof(*ti))))
1275				err(1, "table_opt: calloc");
1276			ti->file = $2;
1277			SIMPLEQ_INSERT_TAIL(&table_opts.init_nodes, ti,
1278			    entries);
1279			table_opts.init_addr = 1;
1280		}
1281		;
1282
1283tablespec	: xhost	optweight		{
1284			if ($2 > 0) {
1285				struct node_host	*n;
1286				for (n = $1; n != NULL; n = n->next)
1287					n->weight = $2;
1288			}
1289			$$ = $1;
1290		}
1291		| '{' optnl table_host_list '}'	{ $$ = $3; }
1292		;
1293
1294table_host_list	: tablespec optnl			{ $$ = $1; }
1295		| table_host_list comma tablespec optnl {
1296			$1->tail->next = $3;
1297			$1->tail = $3->tail;
1298			$$ = $1;
1299		}
1300		;
1301
1302queuespec	: QUEUE STRING interface queue_opts		{
1303			if ($3 == NULL && $4.parent == NULL) {
1304				yyerror("root queue without interface");
1305				YYERROR;
1306			}
1307			if ($2[0] == '_') {
1308				yyerror("queue names must not start with _");
1309				YYERROR;
1310			}
1311			expand_queue($2, $3, &$4);
1312		}
1313		;
1314
1315queue_opts	:	{
1316			bzero(&queue_opts, sizeof queue_opts);
1317		}
1318		    queue_opts_l
1319			{ $$ = queue_opts; }
1320		;
1321
1322queue_opts_l	: queue_opts_l queue_opt
1323		| queue_opt
1324		;
1325
1326queue_opt	: BANDWIDTH scspec optscs			{
1327			if (queue_opts.marker & QOM_BWSPEC) {
1328				yyerror("bandwidth cannot be respecified");
1329				YYERROR;
1330			}
1331			if (queue_opts.marker & QOM_FLOWS) {
1332				yyerror("bandwidth cannot be specified for "
1333				    "a flow queue");
1334				YYERROR;
1335			}
1336			queue_opts.marker |= QOM_BWSPEC;
1337			queue_opts.linkshare = $2;
1338			queue_opts.realtime= $3.realtime;
1339			queue_opts.upperlimit = $3.upperlimit;
1340		}
1341		| PARENT STRING					{
1342			if (queue_opts.marker & QOM_PARENT) {
1343				yyerror("parent cannot be respecified");
1344				YYERROR;
1345			}
1346			queue_opts.marker |= QOM_PARENT;
1347			queue_opts.parent = $2;
1348		}
1349		| DEFAULT					{
1350			if (queue_opts.marker & QOM_DEFAULT) {
1351				yyerror("default cannot be respecified");
1352				YYERROR;
1353			}
1354			queue_opts.marker |= QOM_DEFAULT;
1355			queue_opts.flags |= PFQS_DEFAULT;
1356		}
1357		| QLIMIT NUMBER					{
1358			if (queue_opts.marker & QOM_QLIMIT) {
1359				yyerror("qlimit cannot be respecified");
1360				YYERROR;
1361			}
1362			if ($2 < 0 || $2 > 65535) {
1363				yyerror("qlimit out of range: max 65535");
1364				YYERROR;
1365			}
1366			queue_opts.marker |= QOM_QLIMIT;
1367			queue_opts.qlimit = $2;
1368		}
1369		| FLOWS NUMBER					{
1370			if (queue_opts.marker & QOM_FLOWS) {
1371				yyerror("number of flows cannot be respecified");
1372				YYERROR;
1373			}
1374			if (queue_opts.marker & QOM_BWSPEC) {
1375				yyerror("bandwidth cannot be specified for "
1376				    "a flow queue");
1377				YYERROR;
1378			}
1379			if ($2 < 1 || $2 > 32767) {
1380				yyerror("number of flows out of range: "
1381				    "max 32767");
1382				YYERROR;
1383			}
1384			queue_opts.marker |= QOM_FLOWS;
1385			queue_opts.flags |= PFQS_FLOWQUEUE;
1386			queue_opts.flowqueue.flows = $2;
1387		}
1388		| QUANTUM NUMBER				{
1389			if (queue_opts.marker & QOM_QUANTUM) {
1390				yyerror("quantum cannot be respecified");
1391				YYERROR;
1392			}
1393			if ($2 < 1 || $2 > 65535) {
1394				yyerror("quantum out of range: max 65535");
1395				YYERROR;
1396			}
1397			queue_opts.marker |= QOM_QUANTUM;
1398			queue_opts.flowqueue.quantum = $2;
1399		}
1400		;
1401
1402optscs		: /* nada */					{
1403
1404		}
1405		| comma MINIMUM scspec				{
1406			$$.realtime = $3;
1407		}
1408		| comma MAXIMUM scspec				{
1409			$$.upperlimit = $3;
1410		}
1411		| comma MINIMUM scspec comma MAXIMUM scspec	{
1412			$$.realtime = $3;
1413			$$.upperlimit = $6;
1414		}
1415		| comma MAXIMUM scspec comma MINIMUM scspec	{
1416			$$.realtime = $6;
1417			$$.upperlimit = $3;
1418		}
1419		;
1420
1421scspec		: bandwidth					{
1422			$$.m2 = $1;
1423			$$.d = 0;
1424			if ($$.m2.bw_percent) {
1425				yyerror("no bandwidth in %% yet");
1426				YYERROR;
1427			}
1428		}
1429		| bandwidth BURST bandwidth FOR STRING	{
1430			u_long	 ul;
1431			char	*cp;
1432
1433			ul = strtoul($5, &cp, 10);
1434			if (cp == NULL || strcmp(cp, "ms")) {
1435				yyerror("time in scspec must be in ms");
1436				YYERROR;
1437			}
1438
1439			$$.m1 = $3;
1440			$$.d = ul;
1441			$$.m2 = $1;
1442
1443			if ($$.m1.bw_percent || $$.m2.bw_percent) {
1444				yyerror("no bandwidth in %% yet");
1445				YYERROR;
1446			}
1447		}
1448		;
1449
1450bandwidth	: STRING {
1451			double	 bps;
1452			char	*cp;
1453
1454			$$.bw_percent = 0;
1455
1456			bps = strtod($1, &cp);
1457			if (cp != NULL) {
1458				if (strlen(cp) > 1) {
1459					char *cu = cp + 1;
1460					if (!strcmp(cu, "Bit") ||
1461					    !strcmp(cu, "B") ||
1462					    !strcmp(cu, "bit") ||
1463					    !strcmp(cu, "b")) {
1464						*cu = 0;
1465					}
1466				}
1467				if (!strcmp(cp, "b"))
1468					; /* nothing */
1469				else if (!strcmp(cp, "K"))
1470					bps *= 1000;
1471				else if (!strcmp(cp, "M"))
1472					bps *= 1000 * 1000;
1473				else if (!strcmp(cp, "G"))
1474					bps *= 1000 * 1000 * 1000;
1475				else if (!strcmp(cp, "%")) {
1476					if (bps < 0 || bps > 100) {
1477						yyerror("bandwidth spec "
1478						    "out of range");
1479						free($1);
1480						YYERROR;
1481					}
1482					$$.bw_percent = bps;
1483					bps = 0;
1484				} else {
1485					yyerror("unknown unit \"%s\"", cp);
1486					free($1);
1487					YYERROR;
1488				}
1489			}
1490			free($1);
1491			$$.bw_absolute = (u_int32_t)bps;
1492		}
1493		| NUMBER {
1494			if ($1 < 0 || $1 > UINT_MAX) {
1495				yyerror("bandwidth number too big");
1496				YYERROR;
1497			}
1498			$$.bw_percent = 0;
1499			$$.bw_absolute = $1;
1500		}
1501		;
1502
1503pfrule		: action dir logquick interface af proto fromto
1504		    filter_opts
1505		{
1506			struct pf_rule		 r;
1507			struct node_state_opt	*o;
1508			struct node_proto	*proto;
1509			int			 srctrack = 0;
1510			int			 statelock = 0;
1511			int			 adaptive = 0;
1512			int			 defaults = 0;
1513
1514			memset(&r, 0, sizeof(r));
1515			r.action = $1.b1;
1516			switch ($1.b2) {
1517			case PFRULE_RETURNRST:
1518				r.rule_flag |= PFRULE_RETURNRST;
1519				r.return_ttl = $1.w;
1520				break;
1521			case PFRULE_RETURNICMP:
1522				r.rule_flag |= PFRULE_RETURNICMP;
1523				r.return_icmp = $1.w;
1524				r.return_icmp6 = $1.w2;
1525				break;
1526			case PFRULE_RETURN:
1527				r.rule_flag |= PFRULE_RETURN;
1528				r.return_icmp = $1.w;
1529				r.return_icmp6 = $1.w2;
1530				break;
1531			}
1532			r.direction = $2;
1533			r.log = $3.log;
1534			r.logif = $3.logif;
1535			r.quick = $3.quick;
1536			r.prob = $8.prob;
1537			r.rtableid = $8.rtableid;
1538
1539			if ($8.nodf)
1540				r.scrub_flags |= PFSTATE_NODF;
1541			if ($8.randomid)
1542				r.scrub_flags |= PFSTATE_RANDOMID;
1543			if ($8.minttl)
1544				r.min_ttl = $8.minttl;
1545			if ($8.max_mss)
1546				r.max_mss = $8.max_mss;
1547			if ($8.marker & FOM_SETTOS) {
1548				r.scrub_flags |= PFSTATE_SETTOS;
1549				r.set_tos = $8.settos;
1550			}
1551			if ($8.marker & FOM_SCRUB_TCP)
1552				r.scrub_flags |= PFSTATE_SCRUB_TCP;
1553			if ($8.marker & FOM_PRIO) {
1554				if ($8.prio == 0)
1555					r.prio = PF_PRIO_ZERO;
1556				else
1557					r.prio = $8.prio;
1558			}
1559			if ($8.marker & FOM_SETPRIO) {
1560				r.set_prio[0] = $8.set_prio[0];
1561				r.set_prio[1] = $8.set_prio[1];
1562				r.scrub_flags |= PFSTATE_SETPRIO;
1563			}
1564			if ($8.marker & FOM_ONCE) {
1565				if (r.action == PF_MATCH) {
1566					yyerror("can't specify once for "
1567					    "match rules");
1568					YYERROR;
1569				}
1570				r.rule_flag |= PFRULE_ONCE;
1571			}
1572			if ($8.marker & FOM_AFTO)
1573				r.rule_flag |= PFRULE_AFTO;
1574			if (($8.marker & FOM_AFTO) && r.direction != PF_IN) {
1575				yyerror("af-to can only be used with direction in");
1576				YYERROR;
1577			}
1578			if (($8.marker & FOM_AFTO) && $8.route.rt) {
1579				yyerror("af-to cannot be used together with "
1580				    "route-to, reply-to, dup-to");
1581				YYERROR;
1582			}
1583			r.af = $5;
1584
1585			if ($8.tag)
1586				if (strlcpy(r.tagname, $8.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			if ($8.match_tag)
1593				if (strlcpy(r.match_tagname, $8.match_tag,
1594				    PF_TAG_NAME_SIZE) >= PF_TAG_NAME_SIZE) {
1595					yyerror("tag too long, max %u chars",
1596					    PF_TAG_NAME_SIZE - 1);
1597					YYERROR;
1598				}
1599			r.match_tag_not = $8.match_tag_not;
1600			if (rule_label(&r, $8.label))
1601				YYERROR;
1602			free($8.label);
1603			r.flags = $8.flags.b1;
1604			r.flagset = $8.flags.b2;
1605			if (($8.flags.b1 & $8.flags.b2) != $8.flags.b1) {
1606				yyerror("flags always false");
1607				YYERROR;
1608			}
1609			if ($8.flags.b1 || $8.flags.b2 || $7.src_os) {
1610				for (proto = $6; proto != NULL &&
1611				    proto->proto != IPPROTO_TCP;
1612				    proto = proto->next)
1613					;	/* nothing */
1614				if (proto == NULL && $6 != NULL) {
1615					if ($8.flags.b1 || $8.flags.b2)
1616						yyerror(
1617						    "flags only apply to tcp");
1618					if ($7.src_os)
1619						yyerror(
1620						    "OS fingerprinting only "
1621						    "apply to tcp");
1622					YYERROR;
1623				}
1624#if 0
1625				if (($8.flags.b1 & parse_flags("S")) == 0 &&
1626				    $7.src_os) {
1627					yyerror("OS fingerprinting requires "
1628					    "the SYN TCP flag (flags S/SA)");
1629					YYERROR;
1630				}
1631#endif
1632			}
1633
1634			r.tos = $8.tos;
1635			r.keep_state = $8.keep.action;
1636			o = $8.keep.options;
1637
1638			/* 'keep state' by default on pass rules. */
1639			if (!r.keep_state && !r.action &&
1640			    !($8.marker & FOM_KEEP)) {
1641				r.keep_state = PF_STATE_NORMAL;
1642				o = keep_state_defaults;
1643				defaults = 1;
1644			}
1645
1646			while (o) {
1647				struct node_state_opt	*p = o;
1648
1649				switch (o->type) {
1650				case PF_STATE_OPT_MAX:
1651					if (r.max_states) {
1652						yyerror("state option 'max' "
1653						    "multiple definitions");
1654						YYERROR;
1655					}
1656					r.max_states = o->data.max_states;
1657					break;
1658				case PF_STATE_OPT_NOSYNC:
1659					if (r.rule_flag & PFRULE_NOSYNC) {
1660						yyerror("state option 'sync' "
1661						    "multiple definitions");
1662						YYERROR;
1663					}
1664					r.rule_flag |= PFRULE_NOSYNC;
1665					break;
1666				case PF_STATE_OPT_SRCTRACK:
1667					if (srctrack) {
1668						yyerror("state option "
1669						    "'source-track' "
1670						    "multiple definitions");
1671						YYERROR;
1672					}
1673					srctrack =  o->data.src_track;
1674					r.rule_flag |= PFRULE_SRCTRACK;
1675					break;
1676				case PF_STATE_OPT_MAX_SRC_STATES:
1677					if (r.max_src_states) {
1678						yyerror("state option "
1679						    "'max-src-states' "
1680						    "multiple definitions");
1681						YYERROR;
1682					}
1683					if (o->data.max_src_states == 0) {
1684						yyerror("'max-src-states' must "
1685						    "be > 0");
1686						YYERROR;
1687					}
1688					r.max_src_states =
1689					    o->data.max_src_states;
1690					r.rule_flag |= PFRULE_SRCTRACK;
1691					break;
1692				case PF_STATE_OPT_OVERLOAD:
1693					if (r.overload_tblname[0]) {
1694						yyerror("multiple 'overload' "
1695						    "table definitions");
1696						YYERROR;
1697					}
1698					if (strlcpy(r.overload_tblname,
1699					    o->data.overload.tblname,
1700					    PF_TABLE_NAME_SIZE) >=
1701					    PF_TABLE_NAME_SIZE) {
1702						yyerror("state option: "
1703						    "strlcpy");
1704						YYERROR;
1705					}
1706					r.flush = o->data.overload.flush;
1707					break;
1708				case PF_STATE_OPT_MAX_SRC_CONN:
1709					if (r.max_src_conn) {
1710						yyerror("state option "
1711						    "'max-src-conn' "
1712						    "multiple definitions");
1713						YYERROR;
1714					}
1715					if (o->data.max_src_conn == 0) {
1716						yyerror("'max-src-conn' "
1717						    "must be > 0");
1718						YYERROR;
1719					}
1720					r.max_src_conn =
1721					    o->data.max_src_conn;
1722					r.rule_flag |= PFRULE_SRCTRACK |
1723					    PFRULE_RULESRCTRACK;
1724					break;
1725				case PF_STATE_OPT_MAX_SRC_CONN_RATE:
1726					if (r.max_src_conn_rate.limit) {
1727						yyerror("state option "
1728						    "'max-src-conn-rate' "
1729						    "multiple definitions");
1730						YYERROR;
1731					}
1732					if (!o->data.max_src_conn_rate.limit ||
1733					    !o->data.max_src_conn_rate.seconds) {
1734						yyerror("'max-src-conn-rate' "
1735						    "values must be > 0");
1736						YYERROR;
1737					}
1738					if (o->data.max_src_conn_rate.limit >
1739					    PF_THRESHOLD_MAX) {
1740						yyerror("'max-src-conn-rate' "
1741						    "maximum rate must be < %u",
1742						    PF_THRESHOLD_MAX);
1743						YYERROR;
1744					}
1745					r.max_src_conn_rate.limit =
1746					    o->data.max_src_conn_rate.limit;
1747					r.max_src_conn_rate.seconds =
1748					    o->data.max_src_conn_rate.seconds;
1749					r.rule_flag |= PFRULE_SRCTRACK |
1750					    PFRULE_RULESRCTRACK;
1751					break;
1752				case PF_STATE_OPT_MAX_SRC_NODES:
1753					if (r.max_src_nodes) {
1754						yyerror("state option "
1755						    "'max-src-nodes' "
1756						    "multiple definitions");
1757						YYERROR;
1758					}
1759					if (o->data.max_src_nodes == 0) {
1760						yyerror("'max-src-nodes' must "
1761						    "be > 0");
1762						YYERROR;
1763					}
1764					r.max_src_nodes =
1765					    o->data.max_src_nodes;
1766					r.rule_flag |= PFRULE_SRCTRACK |
1767					    PFRULE_RULESRCTRACK;
1768					break;
1769				case PF_STATE_OPT_STATELOCK:
1770					if (statelock) {
1771						yyerror("state locking option: "
1772						    "multiple definitions");
1773						YYERROR;
1774					}
1775					statelock = 1;
1776					r.rule_flag |= o->data.statelock;
1777					break;
1778				case PF_STATE_OPT_SLOPPY:
1779					if (r.rule_flag & PFRULE_STATESLOPPY) {
1780						yyerror("state sloppy option: "
1781						    "multiple definitions");
1782						YYERROR;
1783					}
1784					r.rule_flag |= PFRULE_STATESLOPPY;
1785					break;
1786				case PF_STATE_OPT_PFLOW:
1787					if (r.rule_flag & PFRULE_PFLOW) {
1788						yyerror("state pflow "
1789						    "option: multiple "
1790						    "definitions");
1791						YYERROR;
1792					}
1793					r.rule_flag |= PFRULE_PFLOW;
1794					break;
1795				case PF_STATE_OPT_TIMEOUT:
1796					if (o->data.timeout.number ==
1797					    PFTM_ADAPTIVE_START ||
1798					    o->data.timeout.number ==
1799					    PFTM_ADAPTIVE_END)
1800						adaptive = 1;
1801					if (r.timeout[o->data.timeout.number]) {
1802						yyerror("state timeout %s "
1803						    "multiple definitions",
1804						    pf_timeouts[o->data.
1805						    timeout.number].name);
1806						YYERROR;
1807					}
1808					r.timeout[o->data.timeout.number] =
1809					    o->data.timeout.seconds;
1810				}
1811				o = o->next;
1812				if (!defaults)
1813					free(p);
1814			}
1815
1816			/* 'flags S/SA' by default on stateful rules */
1817			if (!r.action && !r.flags && !r.flagset &&
1818			    !$8.fragment && !($8.marker & FOM_FLAGS) &&
1819			    r.keep_state) {
1820				r.flags = parse_flags("S");
1821				r.flagset =  parse_flags("SA");
1822			}
1823			if (!adaptive && r.max_states) {
1824				r.timeout[PFTM_ADAPTIVE_START] =
1825				    (r.max_states / 10) * 6;
1826				r.timeout[PFTM_ADAPTIVE_END] =
1827				    (r.max_states / 10) * 12;
1828			}
1829			if (r.rule_flag & PFRULE_SRCTRACK) {
1830				if (srctrack == PF_SRCTRACK_GLOBAL &&
1831				    r.max_src_nodes) {
1832					yyerror("'max-src-nodes' is "
1833					    "incompatible with "
1834					    "'source-track global'");
1835					YYERROR;
1836				}
1837				if (srctrack == PF_SRCTRACK_GLOBAL &&
1838				    r.max_src_conn) {
1839					yyerror("'max-src-conn' is "
1840					    "incompatible with "
1841					    "'source-track global'");
1842					YYERROR;
1843				}
1844				if (srctrack == PF_SRCTRACK_GLOBAL &&
1845				    r.max_src_conn_rate.seconds) {
1846					yyerror("'max-src-conn-rate' is "
1847					    "incompatible with "
1848					    "'source-track global'");
1849					YYERROR;
1850				}
1851				if (r.timeout[PFTM_SRC_NODE] <
1852				    r.max_src_conn_rate.seconds)
1853					r.timeout[PFTM_SRC_NODE] =
1854					    r.max_src_conn_rate.seconds;
1855				r.rule_flag |= PFRULE_SRCTRACK;
1856				if (srctrack == PF_SRCTRACK_RULE)
1857					r.rule_flag |= PFRULE_RULESRCTRACK;
1858			}
1859			if (r.keep_state && !statelock)
1860				r.rule_flag |= default_statelock;
1861
1862			if ($8.fragment)
1863				r.rule_flag |= PFRULE_FRAGMENT;
1864			r.allow_opts = $8.allowopts;
1865
1866			decide_address_family($7.src.host, &r.af);
1867			decide_address_family($7.dst.host, &r.af);
1868
1869			if ($8.route.rt) {
1870				if (!r.direction) {
1871					yyerror("direction must be explicit "
1872					    "with rules that specify routing");
1873					YYERROR;
1874				}
1875				r.rt = $8.route.rt;
1876				r.route.opts = $8.route.pool_opts;
1877				if ($8.route.key != NULL)
1878					memcpy(&r.route.key, $8.route.key,
1879					    sizeof(struct pf_poolhashkey));
1880			}
1881			if (r.rt) {
1882				decide_address_family($8.route.host, &r.af);
1883				if ((r.route.opts & PF_POOL_TYPEMASK) ==
1884				    PF_POOL_NONE && ($8.route.host->next != NULL ||
1885				    $8.route.host->addr.type == PF_ADDR_TABLE ||
1886				    DYNIF_MULTIADDR($8.route.host->addr)))
1887					r.route.opts |= PF_POOL_ROUNDROBIN;
1888				if ($8.route.host->next != NULL) {
1889					if (!PF_POOL_DYNTYPE(r.route.opts)) {
1890						yyerror("address pool option "
1891						    "not supported by type");
1892						YYERROR;
1893					}
1894				}
1895				/* fake redirspec */
1896				if (($8.rroute.rdr = calloc(1,
1897				    sizeof(*$8.rroute.rdr))) == NULL)
1898					err(1, "$8.rroute.rdr");
1899				$8.rroute.rdr->host = $8.route.host;
1900			}
1901			if ($8.queues.qname != NULL) {
1902				if (strlcpy(r.qname, $8.queues.qname,
1903				    sizeof(r.qname)) >= sizeof(r.qname)) {
1904					yyerror("rule qname too long (max "
1905					    "%d chars)", sizeof(r.qname)-1);
1906					YYERROR;
1907				}
1908				free($8.queues.qname);
1909			}
1910			if ($8.queues.pqname != NULL) {
1911				if (strlcpy(r.pqname, $8.queues.pqname,
1912				    sizeof(r.pqname)) >= sizeof(r.pqname)) {
1913					yyerror("rule pqname too long (max "
1914					    "%d chars)", sizeof(r.pqname)-1);
1915					YYERROR;
1916				}
1917				free($8.queues.pqname);
1918			}
1919			if (expand_divertspec(&r, &$8.divert))
1920				YYERROR;
1921			r.divert_packet.port = $8.divert_packet.port;
1922
1923			expand_rule(&r, 0, $4, &$8.nat, &$8.rdr, &$8.rroute, $6,
1924			    $7.src_os,
1925			    $7.src.host, $7.src.port, $7.dst.host, $7.dst.port,
1926			    $8.uid, $8.gid, $8.rcv, $8.icmpspec, "");
1927		}
1928		;
1929
1930filter_opts	:	{
1931				bzero(&filter_opts, sizeof filter_opts);
1932				filter_opts.rtableid = -1;
1933			}
1934		    filter_opts_l
1935			{ $$ = filter_opts; }
1936		| /* empty */	{
1937			bzero(&filter_opts, sizeof filter_opts);
1938			filter_opts.rtableid = -1;
1939			$$ = filter_opts;
1940		}
1941		;
1942
1943filter_opts_l	: filter_opts_l filter_opt
1944		| filter_opt
1945		;
1946
1947filter_opt	: USER uids {
1948			if (filter_opts.uid)
1949				$2->tail->next = filter_opts.uid;
1950			filter_opts.uid = $2;
1951		}
1952		| GROUP gids {
1953			if (filter_opts.gid)
1954				$2->tail->next = filter_opts.gid;
1955			filter_opts.gid = $2;
1956		}
1957		| flags {
1958			if (filter_opts.marker & FOM_FLAGS) {
1959				yyerror("flags cannot be redefined");
1960				YYERROR;
1961			}
1962			filter_opts.marker |= FOM_FLAGS;
1963			filter_opts.flags.b1 |= $1.b1;
1964			filter_opts.flags.b2 |= $1.b2;
1965			filter_opts.flags.w |= $1.w;
1966			filter_opts.flags.w2 |= $1.w2;
1967		}
1968		| icmpspec {
1969			if (filter_opts.marker & FOM_ICMP) {
1970				yyerror("icmp-type cannot be redefined");
1971				YYERROR;
1972			}
1973			filter_opts.marker |= FOM_ICMP;
1974			filter_opts.icmpspec = $1;
1975		}
1976		| PRIO NUMBER {
1977			if (filter_opts.marker & FOM_PRIO) {
1978				yyerror("prio cannot be redefined");
1979				YYERROR;
1980			}
1981			if ($2 < 0 || $2 > IFQ_MAXPRIO) {
1982				yyerror("prio must be 0 - %u", IFQ_MAXPRIO);
1983				YYERROR;
1984			}
1985			filter_opts.marker |= FOM_PRIO;
1986			filter_opts.prio = $2;
1987		}
1988		| TOS tos {
1989			if (filter_opts.marker & FOM_TOS) {
1990				yyerror("tos cannot be redefined");
1991				YYERROR;
1992			}
1993			filter_opts.marker |= FOM_TOS;
1994			filter_opts.tos = $2;
1995		}
1996		| keep {
1997			if (filter_opts.marker & FOM_KEEP) {
1998				yyerror("modulate or keep cannot be redefined");
1999				YYERROR;
2000			}
2001			filter_opts.marker |= FOM_KEEP;
2002			filter_opts.keep.action = $1.action;
2003			filter_opts.keep.options = $1.options;
2004		}
2005		| FRAGMENT {
2006			filter_opts.fragment = 1;
2007		}
2008		| ALLOWOPTS {
2009			filter_opts.allowopts = 1;
2010		}
2011		| LABEL label	{
2012			if (filter_opts.label) {
2013				yyerror("label cannot be redefined");
2014				YYERROR;
2015			}
2016			filter_opts.label = $2;
2017		}
2018		| QUEUE qname	{
2019			if (filter_opts.queues.qname) {
2020				yyerror("queue cannot be redefined");
2021				YYERROR;
2022			}
2023			filter_opts.queues = $2;
2024		}
2025		| TAG string				{
2026			filter_opts.tag = $2;
2027		}
2028		| not TAGGED string			{
2029			filter_opts.match_tag = $3;
2030			filter_opts.match_tag_not = $1;
2031		}
2032		| PROBABILITY probability		{
2033			double	p;
2034
2035			p = floor($2 * UINT_MAX + 0.5);
2036			if (p < 0.0 || p > UINT_MAX) {
2037				yyerror("invalid probability: %g%%", $2 * 100);
2038				YYERROR;
2039			}
2040			filter_opts.prob = (u_int32_t)p;
2041			if (filter_opts.prob == 0)
2042				filter_opts.prob = 1;
2043		}
2044		| RTABLE NUMBER				{
2045			if ($2 < 0 || $2 > RT_TABLEID_MAX) {
2046				yyerror("invalid rtable id");
2047				YYERROR;
2048			}
2049			filter_opts.rtableid = $2;
2050		}
2051		| DIVERTTO STRING PORT portplain {
2052			if ((filter_opts.divert.addr = host($2)) == NULL) {
2053				yyerror("could not parse divert address: %s",
2054				    $2);
2055				free($2);
2056				YYERROR;
2057			}
2058			free($2);
2059			filter_opts.divert.port = $4.a;
2060			if (!filter_opts.divert.port) {
2061				yyerror("invalid divert port: %u", ntohs($4.a));
2062				YYERROR;
2063			}
2064		}
2065		| DIVERTREPLY {
2066			filter_opts.divert.port = 1;	/* some random value */
2067		}
2068		| DIVERTPACKET PORT number {
2069			/*
2070			 * If IP reassembly was not turned off, also
2071			 * forcibly enable TCP reassembly by default.
2072			 */
2073			if (pf->reassemble & PF_REASS_ENABLED)
2074				filter_opts.marker |= FOM_SCRUB_TCP;
2075
2076			if ($3 < 1 || $3 > 65535) {
2077				yyerror("invalid divert port");
2078				YYERROR;
2079			}
2080
2081			filter_opts.divert_packet.port = htons($3);
2082		}
2083		| SCRUB '(' scrub_opts ')' {
2084			filter_opts.nodf = $3.nodf;
2085			filter_opts.minttl = $3.minttl;
2086			filter_opts.randomid = $3.randomid;
2087			filter_opts.max_mss = $3.maxmss;
2088			if ($3.reassemble_tcp)
2089				filter_opts.marker |= FOM_SCRUB_TCP;
2090			filter_opts.marker |= $3.marker;
2091		}
2092		| NATTO redirpool pool_opts {
2093			if (filter_opts.nat.rdr) {
2094				yyerror("cannot respecify nat-to/binat-to");
2095				YYERROR;
2096			}
2097			filter_opts.nat.rdr = $2;
2098			memcpy(&filter_opts.nat.pool_opts, &$3,
2099			    sizeof(filter_opts.nat.pool_opts));
2100		}
2101		| AFTO af FROM redirpool pool_opts {
2102			if (filter_opts.nat.rdr) {
2103				yyerror("cannot respecify af-to");
2104				YYERROR;
2105			}
2106			if ($2 == 0) {
2107				yyerror("no target address family specified");
2108				YYERROR;
2109			}
2110			filter_opts.nat.af = $2;
2111			filter_opts.nat.rdr = $4;
2112			memcpy(&filter_opts.nat.pool_opts, &$5,
2113			    sizeof(filter_opts.nat.pool_opts));
2114			filter_opts.rdr.rdr =
2115			    calloc(1, sizeof(struct redirection));
2116			bzero(&filter_opts.rdr.pool_opts,
2117			    sizeof(filter_opts.rdr.pool_opts));
2118			filter_opts.marker |= FOM_AFTO;
2119		}
2120		| AFTO af FROM redirpool pool_opts TO redirpool pool_opts {
2121			if (filter_opts.nat.rdr) {
2122				yyerror("cannot respecify af-to");
2123				YYERROR;
2124			}
2125			if ($2 == 0) {
2126				yyerror("no address family specified");
2127				YYERROR;
2128			}
2129			if (($4->host->af && $4->host->af != $2) ||
2130			    ($7->host->af && $7->host->af != $2)) {
2131				yyerror("af-to addresses must be in the "
2132				    "target address family");
2133				YYERROR;
2134			}
2135			filter_opts.nat.af = $2;
2136			filter_opts.nat.rdr = $4;
2137			memcpy(&filter_opts.nat.pool_opts, &$5,
2138			    sizeof(filter_opts.nat.pool_opts));
2139			filter_opts.rdr.af = $2;
2140			filter_opts.rdr.rdr = $7;
2141			memcpy(&filter_opts.nat.pool_opts, &$8,
2142			    sizeof(filter_opts.nat.pool_opts));
2143			filter_opts.marker |= FOM_AFTO;
2144		}
2145		| RDRTO redirpool pool_opts {
2146			if (filter_opts.rdr.rdr) {
2147				yyerror("cannot respecify rdr-to");
2148				YYERROR;
2149			}
2150			filter_opts.rdr.rdr = $2;
2151			memcpy(&filter_opts.rdr.pool_opts, &$3,
2152			    sizeof(filter_opts.rdr.pool_opts));
2153		}
2154		| BINATTO redirpool pool_opts {
2155			if (filter_opts.nat.rdr) {
2156				yyerror("cannot respecify nat-to/binat-to");
2157				YYERROR;
2158			}
2159			filter_opts.nat.rdr = $2;
2160			filter_opts.nat.binat = 1;
2161			memcpy(&filter_opts.nat.pool_opts, &$3,
2162			    sizeof(filter_opts.nat.pool_opts));
2163			filter_opts.nat.pool_opts.staticport = 1;
2164		}
2165		| ROUTETO routespec pool_opts {
2166			filter_opts.route.host = $2;
2167			filter_opts.route.rt = PF_ROUTETO;
2168			filter_opts.route.pool_opts = $3.type | $3.opts;
2169			memcpy(&filter_opts.rroute.pool_opts, &$3,
2170			    sizeof(filter_opts.rroute.pool_opts));
2171			if ($3.key != NULL)
2172				filter_opts.route.key = $3.key;
2173		}
2174		| REPLYTO routespec pool_opts {
2175			filter_opts.route.host = $2;
2176			filter_opts.route.rt = PF_REPLYTO;
2177			filter_opts.route.pool_opts = $3.type | $3.opts;
2178			if ($3.key != NULL)
2179				filter_opts.route.key = $3.key;
2180		}
2181		| DUPTO routespec pool_opts {
2182			filter_opts.route.host = $2;
2183			filter_opts.route.rt = PF_DUPTO;
2184			filter_opts.route.pool_opts = $3.type | $3.opts;
2185			memcpy(&filter_opts.rroute.pool_opts, &$3,
2186			    sizeof(filter_opts.rroute.pool_opts));
2187			if ($3.key != NULL)
2188				filter_opts.route.key = $3.key;
2189		}
2190		| not RECEIVEDON if_item {
2191			if (filter_opts.rcv) {
2192				yyerror("cannot respecify received-on");
2193				YYERROR;
2194			}
2195			filter_opts.rcv = $3;
2196			filter_opts.rcv->not = $1;
2197		}
2198		| ONCE {
2199			filter_opts.marker |= FOM_ONCE;
2200		}
2201		| filter_sets
2202		;
2203
2204filter_sets	: SET '(' filter_sets_l ')'	{ $$ = filter_opts; }
2205		| SET filter_set		{ $$ = filter_opts; }
2206		;
2207
2208filter_sets_l	: filter_sets_l comma filter_set
2209		| filter_set
2210		;
2211
2212filter_set	: prio {
2213			if (filter_opts.marker & FOM_SETPRIO) {
2214				yyerror("prio cannot be redefined");
2215				YYERROR;
2216			}
2217			filter_opts.marker |= FOM_SETPRIO;
2218			filter_opts.set_prio[0] = $1.b1;
2219			filter_opts.set_prio[1] = $1.b2;
2220		}
2221		| QUEUE qname	{
2222			if (filter_opts.queues.qname) {
2223				yyerror("queue cannot be redefined");
2224				YYERROR;
2225			}
2226			filter_opts.queues = $2;
2227		}
2228		| TOS tos {
2229			if (filter_opts.marker & FOM_SETTOS) {
2230				yyerror("tos cannot be respecified");
2231				YYERROR;
2232			}
2233			filter_opts.marker |= FOM_SETTOS;
2234			filter_opts.settos = $2;
2235		}
2236		;
2237
2238prio		: PRIO NUMBER {
2239			if ($2 < 0 || $2 > IFQ_MAXPRIO) {
2240				yyerror("prio must be 0 - %u", IFQ_MAXPRIO);
2241				YYERROR;
2242			}
2243			$$.b1 = $$.b2 = $2;
2244		}
2245		| PRIO '(' NUMBER comma NUMBER ')' {
2246			if ($3 < 0 || $3 > IFQ_MAXPRIO ||
2247			    $5 < 0 || $5 > IFQ_MAXPRIO) {
2248				yyerror("prio must be 0 - %u", IFQ_MAXPRIO);
2249				YYERROR;
2250			}
2251			$$.b1 = $3;
2252			$$.b2 = $5;
2253		}
2254		;
2255
2256probability	: STRING				{
2257			char	*e;
2258			double	 p = strtod($1, &e);
2259
2260			if (*e == '%') {
2261				p *= 0.01;
2262				e++;
2263			}
2264			if (*e) {
2265				yyerror("invalid probability: %s", $1);
2266				free($1);
2267				YYERROR;
2268			}
2269			free($1);
2270			$$ = p;
2271		}
2272		| NUMBER				{
2273			$$ = (double)$1;
2274		}
2275		;
2276
2277
2278action		: PASS			{ $$.b1 = PF_PASS; $$.b2 = $$.w = 0; }
2279		| MATCH			{ $$.b1 = PF_MATCH; $$.b2 = $$.w = 0; }
2280		| BLOCK blockspec	{ $$ = $2; $$.b1 = PF_DROP; }
2281		;
2282
2283blockspec	: /* empty */		{
2284			$$.b2 = blockpolicy;
2285			$$.w = returnicmpdefault;
2286			$$.w2 = returnicmp6default;
2287		}
2288		| DROP			{
2289			$$.b2 = PFRULE_DROP;
2290			$$.w = 0;
2291			$$.w2 = 0;
2292		}
2293		| RETURNRST		{
2294			$$.b2 = PFRULE_RETURNRST;
2295			$$.w = 0;
2296			$$.w2 = 0;
2297		}
2298		| RETURNRST '(' TTL NUMBER ')'	{
2299			if ($4 < 0 || $4 > 255) {
2300				yyerror("illegal ttl value %d", $4);
2301				YYERROR;
2302			}
2303			$$.b2 = PFRULE_RETURNRST;
2304			$$.w = $4;
2305			$$.w2 = 0;
2306		}
2307		| RETURNICMP		{
2308			$$.b2 = PFRULE_RETURNICMP;
2309			$$.w = returnicmpdefault;
2310			$$.w2 = returnicmp6default;
2311		}
2312		| RETURNICMP6		{
2313			$$.b2 = PFRULE_RETURNICMP;
2314			$$.w = returnicmpdefault;
2315			$$.w2 = returnicmp6default;
2316		}
2317		| RETURNICMP '(' reticmpspec ')'	{
2318			$$.b2 = PFRULE_RETURNICMP;
2319			$$.w = $3;
2320			$$.w2 = returnicmpdefault;
2321		}
2322		| RETURNICMP6 '(' reticmp6spec ')'	{
2323			$$.b2 = PFRULE_RETURNICMP;
2324			$$.w = returnicmpdefault;
2325			$$.w2 = $3;
2326		}
2327		| RETURNICMP '(' reticmpspec comma reticmp6spec ')' {
2328			$$.b2 = PFRULE_RETURNICMP;
2329			$$.w = $3;
2330			$$.w2 = $5;
2331		}
2332		| RETURN {
2333			$$.b2 = PFRULE_RETURN;
2334			$$.w = returnicmpdefault;
2335			$$.w2 = returnicmp6default;
2336		}
2337		;
2338
2339reticmpspec	: STRING			{
2340			if (!($$ = parseicmpspec($1, AF_INET))) {
2341				free($1);
2342				YYERROR;
2343			}
2344			free($1);
2345		}
2346		| NUMBER			{
2347			u_int8_t		icmptype;
2348
2349			if ($1 < 0 || $1 > 255) {
2350				yyerror("invalid icmp code %lu", $1);
2351				YYERROR;
2352			}
2353			icmptype = returnicmpdefault >> 8;
2354			$$ = (icmptype << 8 | $1);
2355		}
2356		;
2357
2358reticmp6spec	: STRING			{
2359			if (!($$ = parseicmpspec($1, AF_INET6))) {
2360				free($1);
2361				YYERROR;
2362			}
2363			free($1);
2364		}
2365		| NUMBER			{
2366			u_int8_t		icmptype;
2367
2368			if ($1 < 0 || $1 > 255) {
2369				yyerror("invalid icmp code %lu", $1);
2370				YYERROR;
2371			}
2372			icmptype = returnicmp6default >> 8;
2373			$$ = (icmptype << 8 | $1);
2374		}
2375		;
2376
2377dir		: /* empty */			{ $$ = PF_INOUT; }
2378		| IN				{ $$ = PF_IN; }
2379		| OUT				{ $$ = PF_OUT; }
2380		;
2381
2382quick		: /* empty */			{ $$.quick = 0; }
2383		| QUICK				{ $$.quick = 1; }
2384		;
2385
2386logquick	: /* empty */	{ $$.log = 0; $$.quick = 0; $$.logif = 0; }
2387		| log		{ $$ = $1; $$.quick = 0; }
2388		| QUICK		{ $$.quick = 1; $$.log = 0; $$.logif = 0; }
2389		| log QUICK	{ $$ = $1; $$.quick = 1; }
2390		| QUICK log	{ $$ = $2; $$.quick = 1; }
2391		;
2392
2393log		: LOG			{ $$.log = PF_LOG; $$.logif = 0; }
2394		| LOG '(' logopts ')'	{
2395			$$.log = PF_LOG | $3.log;
2396			$$.logif = $3.logif;
2397		}
2398		;
2399
2400logopts		: logopt			{ $$ = $1; }
2401		| logopts comma logopt		{
2402			$$.log = $1.log | $3.log;
2403			$$.logif = $3.logif;
2404			if ($$.logif == 0)
2405				$$.logif = $1.logif;
2406		}
2407		;
2408
2409logopt		: ALL		{ $$.log = PF_LOG_ALL; $$.logif = 0; }
2410		| MATCHES	{ $$.log = PF_LOG_MATCHES; $$.logif = 0; }
2411		| USER		{ $$.log = PF_LOG_SOCKET_LOOKUP; $$.logif = 0; }
2412		| GROUP		{ $$.log = PF_LOG_SOCKET_LOOKUP; $$.logif = 0; }
2413		| TO string	{
2414			const char	*errstr;
2415			u_int		 i;
2416
2417			$$.log = 0;
2418			if (strncmp($2, "pflog", 5)) {
2419				yyerror("%s: should be a pflog interface", $2);
2420				free($2);
2421				YYERROR;
2422			}
2423			i = strtonum($2 + 5, 0, 255, &errstr);
2424			if (errstr) {
2425				yyerror("%s: %s", $2, errstr);
2426				free($2);
2427				YYERROR;
2428			}
2429			free($2);
2430			$$.logif = i;
2431		}
2432		;
2433
2434interface	: /* empty */			{ $$ = NULL; }
2435		| ON if_item_not		{ $$ = $2; }
2436		| ON '{' optnl if_list '}'	{ $$ = $4; }
2437		;
2438
2439if_list		: if_item_not optnl		{ $$ = $1; }
2440		| if_list comma if_item_not optnl	{
2441			$1->tail->next = $3;
2442			$1->tail = $3;
2443			$$ = $1;
2444		}
2445		;
2446
2447if_item_not	: not if_item			{ $$ = $2; $$->not = $1; }
2448		;
2449
2450if_item		: STRING			{
2451			struct node_host	*n;
2452
2453			$$ = calloc(1, sizeof(struct node_if));
2454			if ($$ == NULL)
2455				err(1, "if_item: calloc");
2456			if (strlcpy($$->ifname, $1, sizeof($$->ifname)) >=
2457			    sizeof($$->ifname)) {
2458				free($1);
2459				free($$);
2460				yyerror("interface name too long");
2461				YYERROR;
2462			}
2463
2464			if ((n = ifa_exists($1)) != NULL)
2465				$$->ifa_flags = n->ifa_flags;
2466
2467			free($1);
2468			$$->not = 0;
2469			$$->next = NULL;
2470			$$->tail = $$;
2471		}
2472		| ANY				{
2473			$$ = calloc(1, sizeof(struct node_if));
2474			if ($$ == NULL)
2475				err(1, "if_item: calloc");
2476			strlcpy($$->ifname, "any", sizeof($$->ifname));
2477			$$->not = 0;
2478			$$->next = NULL;
2479			$$->tail = $$;
2480		}
2481		| RDOMAIN NUMBER		{
2482			if ($2 < 0 || $2 > RT_TABLEID_MAX) {
2483				yyerror("rdomain outside range");
2484				YYERROR;
2485			}
2486			$$ = calloc(1, sizeof(struct node_if));
2487			if ($$ == NULL)
2488				err(1, "if_item: calloc");
2489			$$->not = 0;
2490			$$->use_rdomain = 1;
2491			$$->rdomain = $2;
2492			$$->next = NULL;
2493			$$->tail = $$;
2494		}
2495		;
2496
2497af		: /* empty */			{ $$ = 0; }
2498		| INET				{ $$ = AF_INET; }
2499		| INET6				{ $$ = AF_INET6; }
2500		;
2501
2502proto		: /* empty */				{ $$ = NULL; }
2503		| PROTO proto_item			{ $$ = $2; }
2504		| PROTO '{' optnl proto_list '}'	{ $$ = $4; }
2505		;
2506
2507proto_list	: proto_item optnl		{ $$ = $1; }
2508		| proto_list comma proto_item optnl	{
2509			$1->tail->next = $3;
2510			$1->tail = $3;
2511			$$ = $1;
2512		}
2513		;
2514
2515proto_item	: protoval			{
2516			u_int8_t	pr;
2517
2518			pr = (u_int8_t)$1;
2519			if (pr == 0) {
2520				yyerror("proto 0 cannot be used");
2521				YYERROR;
2522			}
2523			$$ = calloc(1, sizeof(struct node_proto));
2524			if ($$ == NULL)
2525				err(1, "proto_item: calloc");
2526			$$->proto = pr;
2527			$$->next = NULL;
2528			$$->tail = $$;
2529		}
2530		;
2531
2532protoval	: STRING			{
2533			struct protoent	*p;
2534
2535			p = getprotobyname($1);
2536			if (p == NULL) {
2537				yyerror("unknown protocol %s", $1);
2538				free($1);
2539				YYERROR;
2540			}
2541			$$ = p->p_proto;
2542			free($1);
2543		}
2544		| NUMBER			{
2545			if ($1 < 0 || $1 > 255) {
2546				yyerror("protocol outside range");
2547				YYERROR;
2548			}
2549		}
2550		;
2551
2552fromto		: ALL				{
2553			$$.src.host = NULL;
2554			$$.src.port = NULL;
2555			$$.dst.host = NULL;
2556			$$.dst.port = NULL;
2557			$$.src_os = NULL;
2558		}
2559		| from os to			{
2560			$$.src = $1;
2561			$$.src_os = $2;
2562			$$.dst = $3;
2563		}
2564		;
2565
2566os		: /* empty */			{ $$ = NULL; }
2567		| OS xos			{ $$ = $2; }
2568		| OS '{' optnl os_list '}'	{ $$ = $4; }
2569		;
2570
2571xos		: STRING {
2572			$$ = calloc(1, sizeof(struct node_os));
2573			if ($$ == NULL)
2574				err(1, "os: calloc");
2575			$$->os = $1;
2576			$$->tail = $$;
2577		}
2578		;
2579
2580os_list		: xos optnl 			{ $$ = $1; }
2581		| os_list comma xos optnl	{
2582			$1->tail->next = $3;
2583			$1->tail = $3;
2584			$$ = $1;
2585		}
2586		;
2587
2588from		: /* empty */			{
2589			$$.host = NULL;
2590			$$.port = NULL;
2591		}
2592		| FROM ipportspec		{
2593			$$ = $2;
2594		}
2595		;
2596
2597to		: /* empty */			{
2598			$$.host = NULL;
2599			$$.port = NULL;
2600		}
2601		| TO ipportspec		{
2602			if (disallow_urpf_failed($2.host, "\"urpf-failed\" is "
2603			    "not permitted in a destination address"))
2604				YYERROR;
2605			$$ = $2;
2606		}
2607		;
2608
2609ipportspec	: ipspec			{
2610			$$.host = $1;
2611			$$.port = NULL;
2612		}
2613		| ipspec PORT portspec		{
2614			$$.host = $1;
2615			$$.port = $3;
2616		}
2617		| PORT portspec			{
2618			$$.host = NULL;
2619			$$.port = $2;
2620		}
2621		;
2622
2623optnl		: '\n' optnl
2624		| /* empty */
2625		;
2626
2627ipspec		: ANY				{ $$ = NULL; }
2628		| xhost				{ $$ = $1; }
2629		| '{' optnl host_list '}'	{ $$ = $3; }
2630		;
2631
2632
2633host_list	: ipspec optnl			{ $$ = $1; }
2634		| host_list comma ipspec optnl	{
2635			if ($1 == NULL) {
2636				freehostlist($3);
2637				$$ = $1;
2638			} else if ($3 == NULL) {
2639				freehostlist($1);
2640				$$ = $3;
2641			} else {
2642				$1->tail->next = $3;
2643				$1->tail = $3->tail;
2644				$$ = $1;
2645			}
2646		}
2647		;
2648
2649xhost		: not host			{
2650			struct node_host	*n;
2651
2652			for (n = $2; n != NULL; n = n->next)
2653				n->not = $1;
2654			$$ = $2;
2655		}
2656		| not NOROUTE			{
2657			$$ = calloc(1, sizeof(struct node_host));
2658			if ($$ == NULL)
2659				err(1, "xhost: calloc");
2660			$$->addr.type = PF_ADDR_NOROUTE;
2661			$$->next = NULL;
2662			$$->not = $1;
2663			$$->tail = $$;
2664		}
2665		| not URPFFAILED		{
2666			$$ = calloc(1, sizeof(struct node_host));
2667			if ($$ == NULL)
2668				err(1, "xhost: calloc");
2669			$$->addr.type = PF_ADDR_URPFFAILED;
2670			$$->next = NULL;
2671			$$->not = $1;
2672			$$->tail = $$;
2673		}
2674		;
2675
2676optweight	: WEIGHT NUMBER			{
2677			if ($2 < 1 || $2 > USHRT_MAX) {
2678				yyerror("weight out of range");
2679				YYERROR;
2680			}
2681			$$ = $2;
2682		}
2683		| /* empty */ { $$ = 0; }
2684		;
2685
2686host		: STRING			{
2687			if (($$ = host($1)) == NULL)	{
2688				/* error. "any" is handled elsewhere */
2689				free($1);
2690				yyerror("could not parse host specification");
2691				YYERROR;
2692			}
2693			free($1);
2694
2695		}
2696		| STRING '-' STRING		{
2697			struct node_host *b, *e;
2698
2699			if ((b = host($1)) == NULL || (e = host($3)) == NULL) {
2700				free($1);
2701				free($3);
2702				yyerror("could not parse host specification");
2703				YYERROR;
2704			}
2705			if (b->af != e->af ||
2706			    b->addr.type != PF_ADDR_ADDRMASK ||
2707			    e->addr.type != PF_ADDR_ADDRMASK ||
2708			    unmask(&b->addr.v.a.mask, b->af) !=
2709			    (b->af == AF_INET ? 32 : 128) ||
2710			    unmask(&e->addr.v.a.mask, e->af) !=
2711			    (e->af == AF_INET ? 32 : 128) ||
2712			    b->next != NULL || b->not ||
2713			    e->next != NULL || e->not) {
2714				free(b);
2715				free(e);
2716				free($1);
2717				free($3);
2718				yyerror("invalid address range");
2719				YYERROR;
2720			}
2721			memcpy(&b->addr.v.a.mask, &e->addr.v.a.addr,
2722			    sizeof(b->addr.v.a.mask));
2723			b->addr.type = PF_ADDR_RANGE;
2724			$$ = b;
2725			free(e);
2726			free($1);
2727			free($3);
2728		}
2729		| STRING '/' NUMBER		{
2730			char	*buf;
2731
2732			if (asprintf(&buf, "%s/%lld", $1, $3) == -1)
2733				err(1, "host: asprintf");
2734			free($1);
2735			if (($$ = host(buf)) == NULL)	{
2736				/* error. "any" is handled elsewhere */
2737				free(buf);
2738				yyerror("could not parse host specification");
2739				YYERROR;
2740			}
2741			free(buf);
2742		}
2743		| NUMBER '/' NUMBER		{
2744			char	*buf;
2745
2746			/* ie. for 10/8 parsing */
2747			if (asprintf(&buf, "%lld/%lld", $1, $3) == -1)
2748				err(1, "host: asprintf");
2749			if (($$ = host(buf)) == NULL)	{
2750				/* error. "any" is handled elsewhere */
2751				free(buf);
2752				yyerror("could not parse host specification");
2753				YYERROR;
2754			}
2755			free(buf);
2756		}
2757		| dynaddr
2758		| dynaddr '/' NUMBER		{
2759			struct node_host	*n;
2760
2761			if ($3 < 0 || $3 > 128) {
2762				yyerror("bit number too big");
2763				YYERROR;
2764			}
2765			$$ = $1;
2766			for (n = $1; n != NULL; n = n->next)
2767				set_ipmask(n, $3);
2768		}
2769		| '<' STRING '>'	{
2770			if (strlen($2) >= PF_TABLE_NAME_SIZE) {
2771				yyerror("table name '%s' too long", $2);
2772				free($2);
2773				YYERROR;
2774			}
2775			$$ = calloc(1, sizeof(struct node_host));
2776			if ($$ == NULL)
2777				err(1, "host: calloc");
2778			$$->addr.type = PF_ADDR_TABLE;
2779			if (strlcpy($$->addr.v.tblname, $2,
2780			    sizeof($$->addr.v.tblname)) >=
2781			    sizeof($$->addr.v.tblname))
2782				errx(1, "host: strlcpy");
2783			free($2);
2784			$$->next = NULL;
2785			$$->tail = $$;
2786		}
2787		| ROUTE	STRING		{
2788			$$ = calloc(1, sizeof(struct node_host));
2789			if ($$ == NULL) {
2790				free($2);
2791				err(1, "host: calloc");
2792			}
2793			$$->addr.type = PF_ADDR_RTLABEL;
2794			if (strlcpy($$->addr.v.rtlabelname, $2,
2795			    sizeof($$->addr.v.rtlabelname)) >=
2796			    sizeof($$->addr.v.rtlabelname)) {
2797				yyerror("route label too long, max %u chars",
2798				    sizeof($$->addr.v.rtlabelname) - 1);
2799				free($2);
2800				free($$);
2801				YYERROR;
2802			}
2803			$$->next = NULL;
2804			$$->tail = $$;
2805			free($2);
2806		}
2807		;
2808
2809number		: NUMBER
2810		| STRING		{
2811			u_long	ulval;
2812
2813			if (atoul($1, &ulval) == -1) {
2814				yyerror("%s is not a number", $1);
2815				free($1);
2816				YYERROR;
2817			} else
2818				$$ = ulval;
2819			free($1);
2820		}
2821		;
2822
2823dynaddr		: '(' STRING ')'		{
2824			int	 flags = 0;
2825			char	*p, *op;
2826
2827			op = $2;
2828			if (!isalpha((unsigned char)op[0])) {
2829				yyerror("invalid interface name '%s'", op);
2830				free(op);
2831				YYERROR;
2832			}
2833			while ((p = strrchr($2, ':')) != NULL) {
2834				if (!strcmp(p+1, "network"))
2835					flags |= PFI_AFLAG_NETWORK;
2836				else if (!strcmp(p+1, "broadcast"))
2837					flags |= PFI_AFLAG_BROADCAST;
2838				else if (!strcmp(p+1, "peer"))
2839					flags |= PFI_AFLAG_PEER;
2840				else if (!strcmp(p+1, "0"))
2841					flags |= PFI_AFLAG_NOALIAS;
2842				else {
2843					yyerror("interface %s has bad modifier",
2844					    $2);
2845					free(op);
2846					YYERROR;
2847				}
2848				*p = '\0';
2849			}
2850			if (flags & (flags - 1) & PFI_AFLAG_MODEMASK) {
2851				free(op);
2852				yyerror("illegal combination of "
2853				    "interface modifiers");
2854				YYERROR;
2855			}
2856			$$ = calloc(1, sizeof(struct node_host));
2857			if ($$ == NULL)
2858				err(1, "address: calloc");
2859			$$->af = 0;
2860			set_ipmask($$, 128);
2861			$$->addr.type = PF_ADDR_DYNIFTL;
2862			$$->addr.iflags = flags;
2863			if (strlcpy($$->addr.v.ifname, $2,
2864			    sizeof($$->addr.v.ifname)) >=
2865			    sizeof($$->addr.v.ifname)) {
2866				free(op);
2867				free($$);
2868				yyerror("interface name too long");
2869				YYERROR;
2870			}
2871			free(op);
2872			$$->next = NULL;
2873			$$->tail = $$;
2874		}
2875		;
2876
2877portspec	: port_item			{ $$ = $1; }
2878		| '{' optnl port_list '}'	{ $$ = $3; }
2879		;
2880
2881port_list	: port_item optnl		{ $$ = $1; }
2882		| port_list comma port_item optnl	{
2883			$1->tail->next = $3;
2884			$1->tail = $3;
2885			$$ = $1;
2886		}
2887		;
2888
2889port_item	: portrange			{
2890			$$ = calloc(1, sizeof(struct node_port));
2891			if ($$ == NULL)
2892				err(1, "port_item: calloc");
2893			$$->port[0] = $1.a;
2894			$$->port[1] = $1.b;
2895			if ($1.t)
2896				$$->op = PF_OP_RRG;
2897			else
2898				$$->op = PF_OP_EQ;
2899			$$->next = NULL;
2900			$$->tail = $$;
2901		}
2902		| unaryop portrange	{
2903			if ($2.t) {
2904				yyerror("':' cannot be used with an other "
2905				    "port operator");
2906				YYERROR;
2907			}
2908			$$ = calloc(1, sizeof(struct node_port));
2909			if ($$ == NULL)
2910				err(1, "port_item: calloc");
2911			$$->port[0] = $2.a;
2912			$$->port[1] = $2.b;
2913			$$->op = $1;
2914			$$->next = NULL;
2915			$$->tail = $$;
2916		}
2917		| portrange PORTBINARY portrange	{
2918			if ($1.t || $3.t) {
2919				yyerror("':' cannot be used with an other "
2920				    "port operator");
2921				YYERROR;
2922			}
2923			$$ = calloc(1, sizeof(struct node_port));
2924			if ($$ == NULL)
2925				err(1, "port_item: calloc");
2926			$$->port[0] = $1.a;
2927			$$->port[1] = $3.a;
2928			$$->op = $2;
2929			$$->next = NULL;
2930			$$->tail = $$;
2931		}
2932		;
2933
2934portplain	: numberstring			{
2935			if (parseport($1, &$$, 0) == -1) {
2936				free($1);
2937				YYERROR;
2938			}
2939			free($1);
2940		}
2941		;
2942
2943portrange	: numberstring			{
2944			if (parseport($1, &$$, PPORT_RANGE) == -1) {
2945				free($1);
2946				YYERROR;
2947			}
2948			free($1);
2949		}
2950		;
2951
2952uids		: uid_item			{ $$ = $1; }
2953		| '{' optnl uid_list '}'	{ $$ = $3; }
2954		;
2955
2956uid_list	: uid_item optnl		{ $$ = $1; }
2957		| uid_list comma uid_item optnl	{
2958			$1->tail->next = $3;
2959			$1->tail = $3;
2960			$$ = $1;
2961		}
2962		;
2963
2964uid_item	: uid				{
2965			$$ = calloc(1, sizeof(struct node_uid));
2966			if ($$ == NULL)
2967				err(1, "uid_item: calloc");
2968			$$->uid[0] = $1;
2969			$$->uid[1] = $1;
2970			$$->op = PF_OP_EQ;
2971			$$->next = NULL;
2972			$$->tail = $$;
2973		}
2974		| unaryop uid			{
2975			if ($2 == UID_MAX && $1 != PF_OP_EQ && $1 != PF_OP_NE) {
2976				yyerror("user unknown requires operator = or "
2977				    "!=");
2978				YYERROR;
2979			}
2980			$$ = calloc(1, sizeof(struct node_uid));
2981			if ($$ == NULL)
2982				err(1, "uid_item: calloc");
2983			$$->uid[0] = $2;
2984			$$->uid[1] = $2;
2985			$$->op = $1;
2986			$$->next = NULL;
2987			$$->tail = $$;
2988		}
2989		| uid PORTBINARY uid		{
2990			if ($1 == UID_MAX || $3 == UID_MAX) {
2991				yyerror("user unknown requires operator = or "
2992				    "!=");
2993				YYERROR;
2994			}
2995			$$ = calloc(1, sizeof(struct node_uid));
2996			if ($$ == NULL)
2997				err(1, "uid_item: calloc");
2998			$$->uid[0] = $1;
2999			$$->uid[1] = $3;
3000			$$->op = $2;
3001			$$->next = NULL;
3002			$$->tail = $$;
3003		}
3004		;
3005
3006uid		: STRING			{
3007			if (!strcmp($1, "unknown"))
3008				$$ = UID_MAX;
3009			else {
3010				struct passwd	*pw;
3011
3012				if ((pw = getpwnam($1)) == NULL) {
3013					yyerror("unknown user %s", $1);
3014					free($1);
3015					YYERROR;
3016				}
3017				$$ = pw->pw_uid;
3018			}
3019			free($1);
3020		}
3021		| NUMBER			{
3022			if ($1 < 0 || $1 >= UID_MAX) {
3023				yyerror("illegal uid value %lu", $1);
3024				YYERROR;
3025			}
3026			$$ = $1;
3027		}
3028		;
3029
3030gids		: gid_item			{ $$ = $1; }
3031		| '{' optnl gid_list '}'	{ $$ = $3; }
3032		;
3033
3034gid_list	: gid_item optnl		{ $$ = $1; }
3035		| gid_list comma gid_item optnl	{
3036			$1->tail->next = $3;
3037			$1->tail = $3;
3038			$$ = $1;
3039		}
3040		;
3041
3042gid_item	: gid				{
3043			$$ = calloc(1, sizeof(struct node_gid));
3044			if ($$ == NULL)
3045				err(1, "gid_item: calloc");
3046			$$->gid[0] = $1;
3047			$$->gid[1] = $1;
3048			$$->op = PF_OP_EQ;
3049			$$->next = NULL;
3050			$$->tail = $$;
3051		}
3052		| unaryop gid			{
3053			if ($2 == GID_MAX && $1 != PF_OP_EQ && $1 != PF_OP_NE) {
3054				yyerror("group unknown requires operator = or "
3055				    "!=");
3056				YYERROR;
3057			}
3058			$$ = calloc(1, sizeof(struct node_gid));
3059			if ($$ == NULL)
3060				err(1, "gid_item: calloc");
3061			$$->gid[0] = $2;
3062			$$->gid[1] = $2;
3063			$$->op = $1;
3064			$$->next = NULL;
3065			$$->tail = $$;
3066		}
3067		| gid PORTBINARY gid		{
3068			if ($1 == GID_MAX || $3 == GID_MAX) {
3069				yyerror("group unknown requires operator = or "
3070				    "!=");
3071				YYERROR;
3072			}
3073			$$ = calloc(1, sizeof(struct node_gid));
3074			if ($$ == NULL)
3075				err(1, "gid_item: calloc");
3076			$$->gid[0] = $1;
3077			$$->gid[1] = $3;
3078			$$->op = $2;
3079			$$->next = NULL;
3080			$$->tail = $$;
3081		}
3082		;
3083
3084gid		: STRING			{
3085			if (!strcmp($1, "unknown"))
3086				$$ = GID_MAX;
3087			else {
3088				struct group	*grp;
3089
3090				if ((grp = getgrnam($1)) == NULL) {
3091					yyerror("unknown group %s", $1);
3092					free($1);
3093					YYERROR;
3094				}
3095				$$ = grp->gr_gid;
3096			}
3097			free($1);
3098		}
3099		| NUMBER			{
3100			if ($1 < 0 || $1 >= GID_MAX) {
3101				yyerror("illegal gid value %lu", $1);
3102				YYERROR;
3103			}
3104			$$ = $1;
3105		}
3106		;
3107
3108flag		: STRING			{
3109			int	f;
3110
3111			if ((f = parse_flags($1)) < 0) {
3112				yyerror("bad flags %s", $1);
3113				free($1);
3114				YYERROR;
3115			}
3116			free($1);
3117			$$.b1 = f;
3118		}
3119		;
3120
3121flags		: FLAGS flag '/' flag	{ $$.b1 = $2.b1; $$.b2 = $4.b1; }
3122		| FLAGS '/' flag	{ $$.b1 = 0; $$.b2 = $3.b1; }
3123		| FLAGS ANY		{ $$.b1 = 0; $$.b2 = 0; }
3124		;
3125
3126icmpspec	: ICMPTYPE icmp_item			{ $$ = $2; }
3127		| ICMPTYPE '{' optnl icmp_list '}'	{ $$ = $4; }
3128		| ICMP6TYPE icmp6_item			{ $$ = $2; }
3129		| ICMP6TYPE '{' optnl icmp6_list '}'	{ $$ = $4; }
3130		;
3131
3132icmp_list	: icmp_item optnl		{ $$ = $1; }
3133		| icmp_list comma icmp_item optnl {
3134			$1->tail->next = $3;
3135			$1->tail = $3;
3136			$$ = $1;
3137		}
3138		;
3139
3140icmp6_list	: icmp6_item optnl		{ $$ = $1; }
3141		| icmp6_list comma icmp6_item optnl {
3142			$1->tail->next = $3;
3143			$1->tail = $3;
3144			$$ = $1;
3145		}
3146		;
3147
3148icmp_item	: icmptype		{
3149			$$ = calloc(1, sizeof(struct node_icmp));
3150			if ($$ == NULL)
3151				err(1, "icmp_item: calloc");
3152			$$->type = $1;
3153			$$->code = 0;
3154			$$->proto = IPPROTO_ICMP;
3155			$$->next = NULL;
3156			$$->tail = $$;
3157		}
3158		| icmptype CODE STRING	{
3159			const struct icmpcodeent	*p;
3160
3161			if ((p = geticmpcodebyname($1-1, $3, AF_INET)) == NULL) {
3162				yyerror("unknown icmp-code %s", $3);
3163				free($3);
3164				YYERROR;
3165			}
3166
3167			free($3);
3168			$$ = calloc(1, sizeof(struct node_icmp));
3169			if ($$ == NULL)
3170				err(1, "icmp_item: calloc");
3171			$$->type = $1;
3172			$$->code = p->code + 1;
3173			$$->proto = IPPROTO_ICMP;
3174			$$->next = NULL;
3175			$$->tail = $$;
3176		}
3177		| icmptype CODE NUMBER	{
3178			if ($3 < 0 || $3 > 255) {
3179				yyerror("illegal icmp-code %lu", $3);
3180				YYERROR;
3181			}
3182			$$ = calloc(1, sizeof(struct node_icmp));
3183			if ($$ == NULL)
3184				err(1, "icmp_item: calloc");
3185			$$->type = $1;
3186			$$->code = $3 + 1;
3187			$$->proto = IPPROTO_ICMP;
3188			$$->next = NULL;
3189			$$->tail = $$;
3190		}
3191		;
3192
3193icmp6_item	: icmp6type		{
3194			$$ = calloc(1, sizeof(struct node_icmp));
3195			if ($$ == NULL)
3196				err(1, "icmp_item: calloc");
3197			$$->type = $1;
3198			$$->code = 0;
3199			$$->proto = IPPROTO_ICMPV6;
3200			$$->next = NULL;
3201			$$->tail = $$;
3202		}
3203		| icmp6type CODE STRING	{
3204			const struct icmpcodeent	*p;
3205
3206			if ((p = geticmpcodebyname($1-1, $3, AF_INET6)) == NULL) {
3207				yyerror("unknown icmp6-code %s", $3);
3208				free($3);
3209				YYERROR;
3210			}
3211			free($3);
3212
3213			$$ = calloc(1, sizeof(struct node_icmp));
3214			if ($$ == NULL)
3215				err(1, "icmp_item: calloc");
3216			$$->type = $1;
3217			$$->code = p->code + 1;
3218			$$->proto = IPPROTO_ICMPV6;
3219			$$->next = NULL;
3220			$$->tail = $$;
3221		}
3222		| icmp6type CODE NUMBER	{
3223			if ($3 < 0 || $3 > 255) {
3224				yyerror("illegal icmp-code %lu", $3);
3225				YYERROR;
3226			}
3227			$$ = calloc(1, sizeof(struct node_icmp));
3228			if ($$ == NULL)
3229				err(1, "icmp_item: calloc");
3230			$$->type = $1;
3231			$$->code = $3 + 1;
3232			$$->proto = IPPROTO_ICMPV6;
3233			$$->next = NULL;
3234			$$->tail = $$;
3235		}
3236		;
3237
3238icmptype	: STRING			{
3239			const struct icmptypeent	*p;
3240
3241			if ((p = geticmptypebyname($1, AF_INET)) == NULL) {
3242				yyerror("unknown icmp-type %s", $1);
3243				free($1);
3244				YYERROR;
3245			}
3246			$$ = p->type + 1;
3247			free($1);
3248		}
3249		| NUMBER			{
3250			if ($1 < 0 || $1 > 255) {
3251				yyerror("illegal icmp-type %lu", $1);
3252				YYERROR;
3253			}
3254			$$ = $1 + 1;
3255		}
3256		;
3257
3258icmp6type	: STRING			{
3259			const struct icmptypeent	*p;
3260
3261			if ((p = geticmptypebyname($1, AF_INET6)) ==
3262			    NULL) {
3263				yyerror("unknown icmp6-type %s", $1);
3264				free($1);
3265				YYERROR;
3266			}
3267			$$ = p->type + 1;
3268			free($1);
3269		}
3270		| NUMBER			{
3271			if ($1 < 0 || $1 > 255) {
3272				yyerror("illegal icmp6-type %lu", $1);
3273				YYERROR;
3274			}
3275			$$ = $1 + 1;
3276		}
3277		;
3278
3279tos	: STRING			{
3280			int val;
3281			char *end;
3282
3283			if (map_tos($1, &val))
3284				$$ = val;
3285			else if ($1[0] == '0' && $1[1] == 'x') {
3286				errno = 0;
3287				$$ = strtoul($1, &end, 16);
3288				if (errno || *end != '\0')
3289					$$ = 256;
3290			} else
3291				$$ = 256;		/* flag bad argument */
3292			if ($$ < 0 || $$ > 255) {
3293				yyerror("illegal tos value %s", $1);
3294				free($1);
3295				YYERROR;
3296			}
3297			free($1);
3298		}
3299		| NUMBER			{
3300			$$ = $1;
3301			if ($$ < 0 || $$ > 255) {
3302				yyerror("illegal tos value %lld", $1);
3303				YYERROR;
3304			}
3305		}
3306		;
3307
3308sourcetrack	: /* empty */		{ $$ = PF_SRCTRACK; }
3309		| GLOBAL		{ $$ = PF_SRCTRACK_GLOBAL; }
3310		| RULE			{ $$ = PF_SRCTRACK_RULE; }
3311		;
3312
3313statelock	: IFBOUND {
3314			$$ = PFRULE_IFBOUND;
3315		}
3316		| FLOATING {
3317			$$ = 0;
3318		}
3319		;
3320
3321keep		: NO STATE			{
3322			$$.action = 0;
3323			$$.options = NULL;
3324		}
3325		| KEEP STATE state_opt_spec	{
3326			$$.action = PF_STATE_NORMAL;
3327			$$.options = $3;
3328		}
3329		| MODULATE STATE state_opt_spec {
3330			$$.action = PF_STATE_MODULATE;
3331			$$.options = $3;
3332		}
3333		| SYNPROXY STATE state_opt_spec {
3334			$$.action = PF_STATE_SYNPROXY;
3335			$$.options = $3;
3336		}
3337		;
3338
3339flush		: /* empty */			{ $$ = 0; }
3340		| FLUSH				{ $$ = PF_FLUSH; }
3341		| FLUSH GLOBAL			{
3342			$$ = PF_FLUSH | PF_FLUSH_GLOBAL;
3343		}
3344		;
3345
3346state_opt_spec	: '(' state_opt_list ')'	{ $$ = $2; }
3347		| /* empty */			{ $$ = NULL; }
3348		;
3349
3350state_opt_list	: state_opt_item		{ $$ = $1; }
3351		| state_opt_list comma state_opt_item {
3352			$1->tail->next = $3;
3353			$1->tail = $3;
3354			$$ = $1;
3355		}
3356		;
3357
3358state_opt_item	: MAXIMUM NUMBER		{
3359			if ($2 < 0 || $2 > UINT_MAX) {
3360				yyerror("only positive values permitted");
3361				YYERROR;
3362			}
3363			$$ = calloc(1, sizeof(struct node_state_opt));
3364			if ($$ == NULL)
3365				err(1, "state_opt_item: calloc");
3366			$$->type = PF_STATE_OPT_MAX;
3367			$$->data.max_states = $2;
3368			$$->next = NULL;
3369			$$->tail = $$;
3370		}
3371		| NOSYNC				{
3372			$$ = calloc(1, sizeof(struct node_state_opt));
3373			if ($$ == NULL)
3374				err(1, "state_opt_item: calloc");
3375			$$->type = PF_STATE_OPT_NOSYNC;
3376			$$->next = NULL;
3377			$$->tail = $$;
3378		}
3379		| MAXSRCSTATES NUMBER			{
3380			if ($2 < 0 || $2 > UINT_MAX) {
3381				yyerror("only positive values permitted");
3382				YYERROR;
3383			}
3384			$$ = calloc(1, sizeof(struct node_state_opt));
3385			if ($$ == NULL)
3386				err(1, "state_opt_item: calloc");
3387			$$->type = PF_STATE_OPT_MAX_SRC_STATES;
3388			$$->data.max_src_states = $2;
3389			$$->next = NULL;
3390			$$->tail = $$;
3391		}
3392		| MAXSRCCONN NUMBER			{
3393			if ($2 < 0 || $2 > UINT_MAX) {
3394				yyerror("only positive values permitted");
3395				YYERROR;
3396			}
3397			$$ = calloc(1, sizeof(struct node_state_opt));
3398			if ($$ == NULL)
3399				err(1, "state_opt_item: calloc");
3400			$$->type = PF_STATE_OPT_MAX_SRC_CONN;
3401			$$->data.max_src_conn = $2;
3402			$$->next = NULL;
3403			$$->tail = $$;
3404		}
3405		| MAXSRCCONNRATE NUMBER '/' NUMBER	{
3406			if ($2 < 0 || $2 > UINT_MAX ||
3407			    $4 < 0 || $4 > UINT_MAX) {
3408				yyerror("only positive values permitted");
3409				YYERROR;
3410			}
3411			$$ = calloc(1, sizeof(struct node_state_opt));
3412			if ($$ == NULL)
3413				err(1, "state_opt_item: calloc");
3414			$$->type = PF_STATE_OPT_MAX_SRC_CONN_RATE;
3415			$$->data.max_src_conn_rate.limit = $2;
3416			$$->data.max_src_conn_rate.seconds = $4;
3417			$$->next = NULL;
3418			$$->tail = $$;
3419		}
3420		| OVERLOAD '<' STRING '>' flush		{
3421			if (strlen($3) >= PF_TABLE_NAME_SIZE) {
3422				yyerror("table name '%s' too long", $3);
3423				free($3);
3424				YYERROR;
3425			}
3426			$$ = calloc(1, sizeof(struct node_state_opt));
3427			if ($$ == NULL)
3428				err(1, "state_opt_item: calloc");
3429			if (strlcpy($$->data.overload.tblname, $3,
3430			    PF_TABLE_NAME_SIZE) >= PF_TABLE_NAME_SIZE)
3431				errx(1, "state_opt_item: strlcpy");
3432			free($3);
3433			$$->type = PF_STATE_OPT_OVERLOAD;
3434			$$->data.overload.flush = $5;
3435			$$->next = NULL;
3436			$$->tail = $$;
3437		}
3438		| MAXSRCNODES NUMBER			{
3439			if ($2 < 0 || $2 > UINT_MAX) {
3440				yyerror("only positive values permitted");
3441				YYERROR;
3442			}
3443			$$ = calloc(1, sizeof(struct node_state_opt));
3444			if ($$ == NULL)
3445				err(1, "state_opt_item: calloc");
3446			$$->type = PF_STATE_OPT_MAX_SRC_NODES;
3447			$$->data.max_src_nodes = $2;
3448			$$->next = NULL;
3449			$$->tail = $$;
3450		}
3451		| SOURCETRACK sourcetrack {
3452			$$ = calloc(1, sizeof(struct node_state_opt));
3453			if ($$ == NULL)
3454				err(1, "state_opt_item: calloc");
3455			$$->type = PF_STATE_OPT_SRCTRACK;
3456			$$->data.src_track = $2;
3457			$$->next = NULL;
3458			$$->tail = $$;
3459		}
3460		| statelock {
3461			$$ = calloc(1, sizeof(struct node_state_opt));
3462			if ($$ == NULL)
3463				err(1, "state_opt_item: calloc");
3464			$$->type = PF_STATE_OPT_STATELOCK;
3465			$$->data.statelock = $1;
3466			$$->next = NULL;
3467			$$->tail = $$;
3468		}
3469		| SLOPPY {
3470			$$ = calloc(1, sizeof(struct node_state_opt));
3471			if ($$ == NULL)
3472				err(1, "state_opt_item: calloc");
3473			$$->type = PF_STATE_OPT_SLOPPY;
3474			$$->next = NULL;
3475			$$->tail = $$;
3476		}
3477		| PFLOW {
3478			$$ = calloc(1, sizeof(struct node_state_opt));
3479			if ($$ == NULL)
3480				err(1, "state_opt_item: calloc");
3481			$$->type = PF_STATE_OPT_PFLOW;
3482			$$->next = NULL;
3483			$$->tail = $$;
3484		}
3485		| STRING NUMBER			{
3486			int	i;
3487
3488			if ($2 < 0 || $2 > UINT_MAX) {
3489				yyerror("only positive values permitted");
3490				YYERROR;
3491			}
3492			for (i = 0; pf_timeouts[i].name &&
3493			    strcmp(pf_timeouts[i].name, $1); ++i)
3494				;	/* nothing */
3495			if (!pf_timeouts[i].name) {
3496				yyerror("illegal timeout name %s", $1);
3497				free($1);
3498				YYERROR;
3499			}
3500			if (strchr(pf_timeouts[i].name, '.') == NULL) {
3501				yyerror("illegal state timeout %s", $1);
3502				free($1);
3503				YYERROR;
3504			}
3505			free($1);
3506			$$ = calloc(1, sizeof(struct node_state_opt));
3507			if ($$ == NULL)
3508				err(1, "state_opt_item: calloc");
3509			$$->type = PF_STATE_OPT_TIMEOUT;
3510			$$->data.timeout.number = pf_timeouts[i].timeout;
3511			$$->data.timeout.seconds = $2;
3512			$$->next = NULL;
3513			$$->tail = $$;
3514		}
3515		;
3516
3517label		: STRING			{
3518			$$ = $1;
3519		}
3520		;
3521
3522qname		: STRING				{
3523			struct pfctl_qsitem *qsi;
3524
3525			if ((qsi = pfctl_find_queue($1, &qspecs)) == NULL) {
3526				yyerror("queue %s is not defined", $1);
3527				YYERROR;
3528			}
3529			$$.qname = $1;
3530			$$.pqname = NULL;
3531		}
3532		| '(' STRING ')'			{
3533			struct pfctl_qsitem *qsi;
3534
3535			if ((qsi = pfctl_find_queue($2, &qspecs)) == NULL) {
3536				yyerror("queue %s is not defined", $2);
3537				YYERROR;
3538			}
3539			$$.qname = $2;
3540			$$.pqname = NULL;
3541		}
3542		| '(' STRING comma STRING ')'	{
3543			struct pfctl_qsitem *qsi, *pqsi;
3544
3545			if ((qsi = pfctl_find_queue($2, &qspecs)) == NULL) {
3546				yyerror("queue %s is not defined", $2);
3547				YYERROR;
3548			}
3549			if ((pqsi = pfctl_find_queue($4, &qspecs)) == NULL) {
3550				yyerror("queue %s is not defined", $4);
3551				YYERROR;
3552			}
3553			$$.qname = $2;
3554			$$.pqname = $4;
3555		}
3556		;
3557
3558portstar	: numberstring			{
3559			if (parseport($1, &$$, PPORT_RANGE|PPORT_STAR) == -1) {
3560				free($1);
3561				YYERROR;
3562			}
3563			free($1);
3564		}
3565		;
3566
3567redirspec	: host optweight		{
3568			if ($2 > 0) {
3569				struct node_host	*n;
3570				for (n = $1; n != NULL; n = n->next)
3571					n->weight = $2;
3572			}
3573			$$ = $1;
3574		}
3575		| '{' optnl redir_host_list '}'	{ $$ = $3; }
3576		;
3577
3578redir_host_list	: host optweight optnl			{
3579			if ($1->addr.type != PF_ADDR_ADDRMASK) {
3580				free($1);
3581				yyerror("only addresses can be listed for "
3582				    "redirection pools ");
3583				YYERROR;
3584			}
3585			if ($2 > 0) {
3586				struct node_host	*n;
3587				for (n = $1; n != NULL; n = n->next)
3588					n->weight = $2;
3589			}
3590			$$ = $1;
3591		}
3592		| redir_host_list comma host optweight optnl {
3593			$1->tail->next = $3;
3594			$1->tail = $3->tail;
3595			if ($4 > 0) {
3596				struct node_host	*n;
3597				for (n = $3; n != NULL; n = n->next)
3598					n->weight = $4;
3599			}
3600			$$ = $1;
3601		}
3602		;
3603
3604redirpool	: redirspec		{
3605			$$ = calloc(1, sizeof(struct redirection));
3606			if ($$ == NULL)
3607				err(1, "redirection: calloc");
3608			$$->host = $1;
3609			$$->rport.a = $$->rport.b = $$->rport.t = 0;
3610		}
3611		| redirspec PORT portstar	{
3612			$$ = calloc(1, sizeof(struct redirection));
3613			if ($$ == NULL)
3614				err(1, "redirection: calloc");
3615			$$->host = $1;
3616			$$->rport = $3;
3617		}
3618		;
3619
3620hashkey		: /* empty */
3621		{
3622			$$ = calloc(1, sizeof(struct pf_poolhashkey));
3623			if ($$ == NULL)
3624				err(1, "hashkey: calloc");
3625			$$->key32[0] = arc4random();
3626			$$->key32[1] = arc4random();
3627			$$->key32[2] = arc4random();
3628			$$->key32[3] = arc4random();
3629		}
3630		| string
3631		{
3632			if (!strncmp($1, "0x", 2)) {
3633				if (strlen($1) != 34) {
3634					free($1);
3635					yyerror("hex key must be 128 bits "
3636						"(32 hex digits) long");
3637					YYERROR;
3638				}
3639				$$ = calloc(1, sizeof(struct pf_poolhashkey));
3640				if ($$ == NULL)
3641					err(1, "hashkey: calloc");
3642
3643				if (sscanf($1, "0x%8x%8x%8x%8x",
3644				    &$$->key32[0], &$$->key32[1],
3645				    &$$->key32[2], &$$->key32[3]) != 4) {
3646					free($$);
3647					free($1);
3648					yyerror("invalid hex key");
3649					YYERROR;
3650				}
3651			} else {
3652				MD5_CTX	context;
3653
3654				$$ = calloc(1, sizeof(struct pf_poolhashkey));
3655				if ($$ == NULL)
3656					err(1, "hashkey: calloc");
3657				MD5Init(&context);
3658				MD5Update(&context, (unsigned char *)$1,
3659				    strlen($1));
3660				MD5Final((unsigned char *)$$, &context);
3661				HTONL($$->key32[0]);
3662				HTONL($$->key32[1]);
3663				HTONL($$->key32[2]);
3664				HTONL($$->key32[3]);
3665			}
3666			free($1);
3667		}
3668		;
3669
3670pool_opts	:	{ bzero(&pool_opts, sizeof pool_opts); }
3671		    pool_opts_l
3672			{ $$ = pool_opts; }
3673		| /* empty */	{
3674			bzero(&pool_opts, sizeof pool_opts);
3675			$$ = pool_opts;
3676		}
3677		;
3678
3679pool_opts_l	: pool_opts_l pool_opt
3680		| pool_opt
3681		;
3682
3683pool_opt	: BITMASK	{
3684			if (pool_opts.type) {
3685				yyerror("pool type cannot be redefined");
3686				YYERROR;
3687			}
3688			pool_opts.type =  PF_POOL_BITMASK;
3689		}
3690		| RANDOM	{
3691			if (pool_opts.type) {
3692				yyerror("pool type cannot be redefined");
3693				YYERROR;
3694			}
3695			pool_opts.type = PF_POOL_RANDOM;
3696		}
3697		| SOURCEHASH hashkey {
3698			if (pool_opts.type) {
3699				yyerror("pool type cannot be redefined");
3700				YYERROR;
3701			}
3702			pool_opts.type = PF_POOL_SRCHASH;
3703			pool_opts.key = $2;
3704		}
3705		| ROUNDROBIN	{
3706			if (pool_opts.type) {
3707				yyerror("pool type cannot be redefined");
3708				YYERROR;
3709			}
3710			pool_opts.type = PF_POOL_ROUNDROBIN;
3711		}
3712		| LEASTSTATES	{
3713			if (pool_opts.type) {
3714				yyerror("pool type cannot be redefined");
3715				YYERROR;
3716			}
3717			pool_opts.type = PF_POOL_LEASTSTATES;
3718		}
3719		| STATICPORT	{
3720			if (pool_opts.staticport) {
3721				yyerror("static-port cannot be redefined");
3722				YYERROR;
3723			}
3724			pool_opts.staticport = 1;
3725		}
3726		| STICKYADDRESS	{
3727			if (filter_opts.marker & POM_STICKYADDRESS) {
3728				yyerror("sticky-address cannot be redefined");
3729				YYERROR;
3730			}
3731			pool_opts.marker |= POM_STICKYADDRESS;
3732			pool_opts.opts |= PF_POOL_STICKYADDR;
3733		}
3734		;
3735
3736route_host	: STRING			{
3737			/* try to find @if0 address specs */
3738			if (strrchr($1, '@') != NULL) {
3739				if (($$ = host($1)) == NULL)	{
3740					yyerror("invalid host for route spec");
3741					YYERROR;
3742				}
3743				free($1);
3744			} else {
3745				$$ = calloc(1, sizeof(struct node_host));
3746				if ($$ == NULL)
3747					err(1, "route_host: calloc");
3748				$$->ifname = $1;
3749				$$->addr.type = PF_ADDR_NONE;
3750				set_ipmask($$, 128);
3751				$$->next = NULL;
3752				$$->tail = $$;
3753			}
3754		}
3755		| STRING '/' STRING 		{
3756			char	*buf;
3757
3758			if (asprintf(&buf, "%s/%s", $1, $3) == -1)
3759				err(1, "host: asprintf");
3760			free($1);
3761			if (($$ = host(buf)) == NULL)	{
3762				/* error. "any" is handled elsewhere */
3763				free(buf);
3764				yyerror("could not parse host specification");
3765				YYERROR;
3766			}
3767			free(buf);
3768		}
3769		| '<' STRING '>'	{
3770			if (strlen($2) >= PF_TABLE_NAME_SIZE) {
3771				yyerror("table name '%s' too long", $2);
3772				free($2);
3773				YYERROR;
3774			}
3775			$$ = calloc(1, sizeof(struct node_host));
3776			if ($$ == NULL)
3777				err(1, "host: calloc");
3778			$$->addr.type = PF_ADDR_TABLE;
3779			if (strlcpy($$->addr.v.tblname, $2,
3780			    sizeof($$->addr.v.tblname)) >=
3781			    sizeof($$->addr.v.tblname))
3782				errx(1, "host: strlcpy");
3783			free($2);
3784			$$->next = NULL;
3785			$$->tail = $$;
3786		}
3787		| dynaddr '/' NUMBER		{
3788			struct node_host	*n;
3789
3790			if ($3 < 0 || $3 > 128) {
3791				yyerror("bit number too big");
3792				YYERROR;
3793			}
3794			$$ = $1;
3795			for (n = $1; n != NULL; n = n->next)
3796				set_ipmask(n, $3);
3797		}
3798		| '(' STRING host ')'		{
3799			struct node_host	*n;
3800
3801			$$ = $3;
3802			/* XXX check masks, only full mask should be allowed */
3803			for (n = $3; n != NULL; n = n->next) {
3804				if ($$->ifname) {
3805					yyerror("cannot specify interface twice "
3806					    "in route spec");
3807					YYERROR;
3808				}
3809				if (($$->ifname = strdup($2)) == NULL)
3810					errx(1, "host: strdup");
3811			}
3812			free($2);
3813		}
3814		;
3815
3816route_host_list	: route_host optweight optnl		{
3817			if ($2 > 0) {
3818				struct node_host	*n;
3819				for (n = $1; n != NULL; n = n->next)
3820					n->weight = $2;
3821			}
3822			$$ = $1;
3823		}
3824		| route_host_list comma route_host optweight optnl {
3825			if ($1->af == 0)
3826				$1->af = $3->af;
3827			if ($1->af != $3->af) {
3828				yyerror("all pool addresses must be in the "
3829				    "same address family");
3830				YYERROR;
3831			}
3832			$1->tail->next = $3;
3833			$1->tail = $3->tail;
3834			if ($4 > 0) {
3835				struct node_host	*n;
3836				for (n = $3; n != NULL; n = n->next)
3837					n->weight = $4;
3838			}
3839			$$ = $1;
3840		}
3841		;
3842
3843routespec	: route_host optweight			{
3844			if ($2 > 0) {
3845				struct node_host	*n;
3846				for (n = $1; n != NULL; n = n->next)
3847					n->weight = $2;
3848			}
3849			$$ = $1;
3850		}
3851		| '{' optnl route_host_list '}'	{ $$ = $3; }
3852		;
3853
3854timeout_spec	: STRING NUMBER
3855		{
3856			if ($2 < 0 || $2 > UINT_MAX) {
3857				yyerror("only positive values permitted");
3858				YYERROR;
3859			}
3860			if (pfctl_set_timeout(pf, $1, $2, 0) != 0) {
3861				yyerror("unknown timeout %s", $1);
3862				free($1);
3863				YYERROR;
3864			}
3865			free($1);
3866		}
3867		;
3868
3869timeout_list	: timeout_list comma timeout_spec optnl
3870		| timeout_spec optnl
3871		;
3872
3873limit_spec	: STRING NUMBER
3874		{
3875			if ($2 < 0 || $2 > UINT_MAX) {
3876				yyerror("only positive values permitted");
3877				YYERROR;
3878			}
3879			if (pfctl_set_limit(pf, $1, $2) != 0) {
3880				yyerror("unable to set limit %s %u", $1, $2);
3881				free($1);
3882				YYERROR;
3883			}
3884			free($1);
3885		}
3886		;
3887
3888limit_list	: limit_list comma limit_spec optnl
3889		| limit_spec optnl
3890		;
3891
3892comma		: ','
3893		| /* empty */
3894		;
3895
3896yesno		: NO			{ $$ = 0; }
3897		| STRING		{
3898			if (!strcmp($1, "yes"))
3899				$$ = 1;
3900			else {
3901				yyerror("invalid value '%s', expected 'yes' "
3902				    "or 'no'", $1);
3903				free($1);
3904				YYERROR;
3905			}
3906			free($1);
3907		}
3908		;
3909
3910unaryop		: '='		{ $$ = PF_OP_EQ; }
3911		| NE		{ $$ = PF_OP_NE; }
3912		| LE		{ $$ = PF_OP_LE; }
3913		| '<'		{ $$ = PF_OP_LT; }
3914		| GE		{ $$ = PF_OP_GE; }
3915		| '>'		{ $$ = PF_OP_GT; }
3916		;
3917
3918%%
3919
3920int
3921yyerror(const char *fmt, ...)
3922{
3923	va_list		 ap;
3924
3925	file->errors++;
3926	va_start(ap, fmt);
3927	fprintf(stderr, "%s:%d: ", file->name, yylval.lineno);
3928	vfprintf(stderr, fmt, ap);
3929	fprintf(stderr, "\n");
3930	va_end(ap);
3931	return (0);
3932}
3933
3934int
3935disallow_table(struct node_host *h, const char *fmt)
3936{
3937	for (; h != NULL; h = h->next)
3938		if (h->addr.type == PF_ADDR_TABLE) {
3939			yyerror(fmt, h->addr.v.tblname);
3940			return (1);
3941		}
3942	return (0);
3943}
3944
3945int
3946disallow_urpf_failed(struct node_host *h, const char *fmt)
3947{
3948	for (; h != NULL; h = h->next)
3949		if (h->addr.type == PF_ADDR_URPFFAILED) {
3950			yyerror(fmt);
3951			return (1);
3952		}
3953	return (0);
3954}
3955
3956int
3957disallow_alias(struct node_host *h, const char *fmt)
3958{
3959	for (; h != NULL; h = h->next)
3960		if (DYNIF_MULTIADDR(h->addr)) {
3961			yyerror(fmt, h->addr.v.tblname);
3962			return (1);
3963		}
3964	return (0);
3965}
3966
3967int
3968rule_consistent(struct pf_rule *r, int anchor_call)
3969{
3970	int	problems = 0;
3971
3972	if (r->proto != IPPROTO_TCP && r->os_fingerprint != PF_OSFP_ANY) {
3973		yyerror("os only applies to tcp");
3974		problems++;
3975	}
3976	if (r->proto != IPPROTO_TCP && r->proto != IPPROTO_UDP &&
3977	    (r->src.port_op || r->dst.port_op)) {
3978		yyerror("port only applies to tcp/udp");
3979		problems++;
3980	}
3981	if (r->proto != IPPROTO_TCP && r->proto != IPPROTO_UDP &&
3982	    r->uid.op) {
3983		yyerror("user only applies to tcp/udp");
3984		problems++;
3985	}
3986	if (r->proto != IPPROTO_TCP && r->proto != IPPROTO_UDP &&
3987	    r->gid.op) {
3988		yyerror("group only applies to tcp/udp");
3989		problems++;
3990	}
3991	if (r->proto != IPPROTO_ICMP && r->proto != IPPROTO_ICMPV6 &&
3992	    (r->type || r->code)) {
3993		yyerror("icmp-type/code only applies to icmp");
3994		problems++;
3995	}
3996	if (!r->af && (r->type || r->code)) {
3997		yyerror("must indicate address family with icmp-type/code");
3998		problems++;
3999	}
4000	if (r->rule_flag & PFRULE_AFTO && r->af == r->naf) {
4001		yyerror("must indicate different address family with af-to");
4002		problems++;
4003	}
4004	if (r->overload_tblname[0] &&
4005	    r->max_src_conn == 0 && r->max_src_conn_rate.seconds == 0) {
4006		yyerror("'overload' requires 'max-src-conn' "
4007		    "or 'max-src-conn-rate'");
4008		problems++;
4009	}
4010	if ((r->proto == IPPROTO_ICMP && r->af == AF_INET6) ||
4011	    (r->proto == IPPROTO_ICMPV6 && r->af == AF_INET)) {
4012		yyerror("proto %s doesn't match address family %s",
4013		    r->proto == IPPROTO_ICMP ? "icmp" : "icmp6",
4014		    r->af == AF_INET ? "inet" : "inet6");
4015		problems++;
4016	}
4017	if (r->allow_opts && r->action != PF_PASS) {
4018		yyerror("allow-opts can only be specified for pass rules");
4019		problems++;
4020	}
4021	if (r->rule_flag & PFRULE_FRAGMENT && (r->src.port_op ||
4022	    r->dst.port_op || r->flagset || r->type || r->code)) {
4023		yyerror("fragments can be filtered only on IP header fields");
4024		problems++;
4025	}
4026	if (r->rule_flag & PFRULE_RETURNRST && r->proto != IPPROTO_TCP) {
4027		yyerror("return-rst can only be applied to TCP rules");
4028		problems++;
4029	}
4030	if (r->max_src_nodes && !(r->rule_flag & PFRULE_RULESRCTRACK)) {
4031		yyerror("max-src-nodes requires 'source-track rule'");
4032		problems++;
4033	}
4034	if (r->action != PF_PASS && r->keep_state) {
4035		yyerror("keep state is great, but only for pass rules");
4036		problems++;
4037	}
4038	if (r->rule_flag & PFRULE_STATESLOPPY &&
4039	    (r->keep_state == PF_STATE_MODULATE ||
4040	    r->keep_state == PF_STATE_SYNPROXY)) {
4041		yyerror("sloppy state matching cannot be used with "
4042		    "synproxy state or modulate state");
4043		problems++;
4044	}
4045	if ((r->nat.addr.type != PF_ADDR_NONE ||
4046	    r->rdr.addr.type != PF_ADDR_NONE) &&
4047	    r->action != PF_MATCH && !r->keep_state) {
4048		yyerror("nat-to and rdr-to require keep state");
4049		problems++;
4050	}
4051	if (r->direction == PF_INOUT && (r->nat.addr.type != PF_ADDR_NONE ||
4052	    r->rdr.addr.type != PF_ADDR_NONE)) {
4053		yyerror("nat-to and rdr-to require a direction");
4054		problems++;
4055	}
4056	if (r->af == AF_INET6 && (r->scrub_flags &
4057	    (PFSTATE_NODF|PFSTATE_RANDOMID))) {
4058		yyerror("address family inet6 does not support scrub options "
4059		    "no-df, random-id");
4060		problems++;
4061	}
4062
4063	/* Basic rule sanity check. */
4064	switch (r->action) {
4065	case PF_MATCH:
4066		if (r->divert.port) {
4067			yyerror("divert is not supported on match rules");
4068			problems++;
4069		}
4070		if (r->divert_packet.port) {
4071			yyerror("divert is not supported on match rules");
4072			problems++;
4073		}
4074		if (r->rt) {
4075			yyerror("route-to, reply-to and dup-to "
4076			   "are not supported on match rules");
4077			problems++;
4078		}
4079		if (r->rule_flag & PFRULE_AFTO) {
4080			yyerror("af-to is not supported on match rules");
4081			problems++;
4082		}
4083		break;
4084	case PF_DROP:
4085		if (r->rt) {
4086			yyerror("route-to, reply-to and dup-to "
4087			   "are not supported on block rules");
4088			problems++;
4089		}
4090		break;
4091	default:;
4092	}
4093	return (-problems);
4094}
4095
4096int
4097process_tabledef(char *name, struct table_opts *opts)
4098{
4099	struct pfr_buffer	 ab;
4100	struct node_tinit	*ti;
4101
4102	bzero(&ab, sizeof(ab));
4103	ab.pfrb_type = PFRB_ADDRS;
4104	SIMPLEQ_FOREACH(ti, &opts->init_nodes, entries) {
4105		if (ti->file)
4106			if (pfr_buf_load(&ab, ti->file, 0)) {
4107				if (errno)
4108					yyerror("cannot load \"%s\": %s",
4109					    ti->file, strerror(errno));
4110				else
4111					yyerror("file \"%s\" contains bad data",
4112					    ti->file);
4113				goto _error;
4114			}
4115		if (ti->host)
4116			if (append_addr_host(&ab, ti->host, 0, 0)) {
4117				yyerror("cannot create address buffer: %s",
4118				    strerror(errno));
4119				goto _error;
4120			}
4121	}
4122	if (pf->opts & PF_OPT_VERBOSE)
4123		print_tabledef(name, opts->flags, opts->init_addr,
4124		    &opts->init_nodes);
4125	if (!(pf->opts & PF_OPT_NOACTION) &&
4126	    pfctl_define_table(name, opts->flags, opts->init_addr,
4127	    pf->anchor->name, &ab, pf->anchor->ruleset.tticket)) {
4128		yyerror("cannot define table %s: %s", name,
4129		    pfr_strerror(errno));
4130		goto _error;
4131	}
4132	pf->tdirty = 1;
4133	pfr_buf_clear(&ab);
4134	return (0);
4135_error:
4136	pfr_buf_clear(&ab);
4137	return (-1);
4138}
4139
4140struct keywords {
4141	const char	*k_name;
4142	int		 k_val;
4143};
4144
4145/* macro gore, but you should've seen the prior indentation nightmare... */
4146
4147#define FREE_LIST(T,r) \
4148	do { \
4149		T *p, *node = r; \
4150		while (node != NULL) { \
4151			p = node; \
4152			node = node->next; \
4153			free(p); \
4154		} \
4155	} while (0)
4156
4157#define LOOP_THROUGH(T,n,r,C) \
4158	do { \
4159		T *n; \
4160		if (r == NULL) { \
4161			r = calloc(1, sizeof(T)); \
4162			if (r == NULL) \
4163				err(1, "LOOP: calloc"); \
4164			r->next = NULL; \
4165		} \
4166		n = r; \
4167		while (n != NULL) { \
4168			do { \
4169				C; \
4170			} while (0); \
4171			n = n->next; \
4172		} \
4173	} while (0)
4174
4175void
4176expand_label_str(char *label, size_t len, const char *srch, const char *repl)
4177{
4178	char *tmp;
4179	char *p, *q;
4180
4181	if ((tmp = calloc(1, len)) == NULL)
4182		err(1, "expand_label_str: calloc");
4183	p = q = label;
4184	while ((q = strstr(p, srch)) != NULL) {
4185		*q = '\0';
4186		if ((strlcat(tmp, p, len) >= len) ||
4187		    (strlcat(tmp, repl, len) >= len))
4188			errx(1, "expand_label: label too long");
4189		q += strlen(srch);
4190		p = q;
4191	}
4192	if (strlcat(tmp, p, len) >= len)
4193		errx(1, "expand_label: label too long");
4194	strlcpy(label, tmp, len);	/* always fits */
4195	free(tmp);
4196}
4197
4198void
4199expand_label_if(const char *name, char *label, size_t len, const char *ifname)
4200{
4201	if (strstr(label, name) != NULL) {
4202		if (!*ifname)
4203			expand_label_str(label, len, name, "any");
4204		else
4205			expand_label_str(label, len, name, ifname);
4206	}
4207}
4208
4209void
4210expand_label_addr(const char *name, char *label, size_t len, sa_family_t af,
4211    struct node_host *h)
4212{
4213	char tmp[64], tmp_not[66];
4214
4215	if (strstr(label, name) != NULL) {
4216		switch (h->addr.type) {
4217		case PF_ADDR_DYNIFTL:
4218			snprintf(tmp, sizeof(tmp), "(%s)", h->addr.v.ifname);
4219			break;
4220		case PF_ADDR_TABLE:
4221			snprintf(tmp, sizeof(tmp), "<%s>", h->addr.v.tblname);
4222			break;
4223		case PF_ADDR_NOROUTE:
4224			snprintf(tmp, sizeof(tmp), "no-route");
4225			break;
4226		case PF_ADDR_URPFFAILED:
4227			snprintf(tmp, sizeof(tmp), "urpf-failed");
4228			break;
4229		case PF_ADDR_ADDRMASK:
4230			if (!af || (PF_AZERO(&h->addr.v.a.addr, af) &&
4231			    PF_AZERO(&h->addr.v.a.mask, af)))
4232				snprintf(tmp, sizeof(tmp), "any");
4233			else {
4234				char	a[48];
4235				int	bits;
4236
4237				if (inet_ntop(af, &h->addr.v.a.addr, a,
4238				    sizeof(a)) == NULL)
4239					snprintf(tmp, sizeof(tmp), "?");
4240				else {
4241					bits = unmask(&h->addr.v.a.mask, af);
4242					if ((af == AF_INET && bits < 32) ||
4243					    (af == AF_INET6 && bits < 128))
4244						snprintf(tmp, sizeof(tmp),
4245						    "%s/%d", a, bits);
4246					else
4247						snprintf(tmp, sizeof(tmp),
4248						    "%s", a);
4249				}
4250			}
4251			break;
4252		default:
4253			snprintf(tmp, sizeof(tmp), "?");
4254			break;
4255		}
4256
4257		if (h->not) {
4258			snprintf(tmp_not, sizeof(tmp_not), "! %s", tmp);
4259			expand_label_str(label, len, name, tmp_not);
4260		} else
4261			expand_label_str(label, len, name, tmp);
4262	}
4263}
4264
4265void
4266expand_label_port(const char *name, char *label, size_t len,
4267    struct node_port *port)
4268{
4269	char	 a1[6], a2[6], op[13] = "";
4270
4271	if (strstr(label, name) != NULL) {
4272		snprintf(a1, sizeof(a1), "%u", ntohs(port->port[0]));
4273		snprintf(a2, sizeof(a2), "%u", ntohs(port->port[1]));
4274		if (!port->op)
4275			;
4276		else if (port->op == PF_OP_IRG)
4277			snprintf(op, sizeof(op), "%s><%s", a1, a2);
4278		else if (port->op == PF_OP_XRG)
4279			snprintf(op, sizeof(op), "%s<>%s", a1, a2);
4280		else if (port->op == PF_OP_EQ)
4281			snprintf(op, sizeof(op), "%s", a1);
4282		else if (port->op == PF_OP_NE)
4283			snprintf(op, sizeof(op), "!=%s", a1);
4284		else if (port->op == PF_OP_LT)
4285			snprintf(op, sizeof(op), "<%s", a1);
4286		else if (port->op == PF_OP_LE)
4287			snprintf(op, sizeof(op), "<=%s", a1);
4288		else if (port->op == PF_OP_GT)
4289			snprintf(op, sizeof(op), ">%s", a1);
4290		else if (port->op == PF_OP_GE)
4291			snprintf(op, sizeof(op), ">=%s", a1);
4292		expand_label_str(label, len, name, op);
4293	}
4294}
4295
4296void
4297expand_label_proto(const char *name, char *label, size_t len, u_int8_t proto)
4298{
4299	struct protoent *pe;
4300	char n[4];
4301
4302	if (strstr(label, name) != NULL) {
4303		pe = getprotobynumber(proto);
4304		if (pe != NULL)
4305			expand_label_str(label, len, name, pe->p_name);
4306		else {
4307			snprintf(n, sizeof(n), "%u", proto);
4308			expand_label_str(label, len, name, n);
4309		}
4310	}
4311}
4312
4313void
4314expand_label_nr(const char *name, char *label, size_t len)
4315{
4316	char n[11];
4317
4318	if (strstr(label, name) != NULL) {
4319		snprintf(n, sizeof(n), "%u", pf->anchor->match);
4320		expand_label_str(label, len, name, n);
4321	}
4322}
4323
4324void
4325expand_label(char *label, size_t len, const char *ifname, sa_family_t af,
4326    struct node_host *src_host, struct node_port *src_port,
4327    struct node_host *dst_host, struct node_port *dst_port,
4328    u_int8_t proto)
4329{
4330	expand_label_if("$if", label, len, ifname);
4331	expand_label_addr("$srcaddr", label, len, af, src_host);
4332	expand_label_addr("$dstaddr", label, len, af, dst_host);
4333	expand_label_port("$srcport", label, len, src_port);
4334	expand_label_port("$dstport", label, len, dst_port);
4335	expand_label_proto("$proto", label, len, proto);
4336	expand_label_nr("$nr", label, len);
4337}
4338
4339int
4340expand_queue(char *qname, struct node_if *interfaces, struct queue_opts *opts)
4341{
4342	struct pf_queuespec	qspec;
4343
4344	LOOP_THROUGH(struct node_if, interface, interfaces,
4345		bzero(&qspec, sizeof(qspec));
4346		if ((opts->flags & PFQS_FLOWQUEUE) && opts->parent) {
4347			yyerror("discipline doesn't support hierarchy");
4348			return (1);
4349		}
4350		if (strlcpy(qspec.qname, qname, sizeof(qspec.qname)) >=
4351		    sizeof(qspec.qname)) {
4352			yyerror("queuename too long");
4353			return (1);
4354		}
4355		if (opts->parent && strlcpy(qspec.parent, opts->parent,
4356		    sizeof(qspec.parent)) >= sizeof(qspec.parent)) {
4357			yyerror("parent too long");
4358			return (1);
4359		}
4360		if (strlcpy(qspec.ifname, interface->ifname,
4361		    sizeof(qspec.ifname)) >= sizeof(qspec.ifname)) {
4362			yyerror("interface too long");
4363			return (1);
4364		}
4365		qspec.realtime.m1.absolute = opts->realtime.m1.bw_absolute;
4366		qspec.realtime.m1.percent = opts->realtime.m1.bw_percent;
4367		qspec.realtime.m2.absolute = opts->realtime.m2.bw_absolute;
4368		qspec.realtime.m2.percent = opts->realtime.m2.bw_percent;
4369		qspec.realtime.d = opts->realtime.d;
4370
4371		qspec.linkshare.m1.absolute = opts->linkshare.m1.bw_absolute;
4372		qspec.linkshare.m1.percent = opts->linkshare.m1.bw_percent;
4373		qspec.linkshare.m2.absolute = opts->linkshare.m2.bw_absolute;
4374		qspec.linkshare.m2.percent = opts->linkshare.m2.bw_percent;
4375		qspec.linkshare.d = opts->linkshare.d;
4376
4377		qspec.upperlimit.m1.absolute = opts->upperlimit.m1.bw_absolute;
4378		qspec.upperlimit.m1.percent = opts->upperlimit.m1.bw_percent;
4379		qspec.upperlimit.m2.absolute = opts->upperlimit.m2.bw_absolute;
4380		qspec.upperlimit.m2.percent = opts->upperlimit.m2.bw_percent;
4381		qspec.upperlimit.d = opts->upperlimit.d;
4382
4383		qspec.flowqueue.flows = opts->flowqueue.flows;
4384		qspec.flowqueue.quantum = opts->flowqueue.quantum;
4385		qspec.flowqueue.interval = opts->flowqueue.interval;
4386		qspec.flowqueue.target = opts->flowqueue.target;
4387
4388		qspec.flags = opts->flags;
4389		qspec.qlimit = opts->qlimit;
4390
4391		if (pfctl_add_queue(pf, &qspec)) {
4392			yyerror("cannot add queue");
4393			return (1);
4394		}
4395	);
4396
4397	FREE_LIST(struct node_if, interfaces);
4398	return (0);
4399}
4400
4401int
4402expand_divertspec(struct pf_rule *r, struct divertspec *ds)
4403{
4404	struct node_host *n;
4405
4406	if (ds->port == 0)
4407		return (0);
4408
4409	r->divert.port = ds->port;
4410
4411	if (r->direction == PF_OUT) {
4412		if (ds->addr) {
4413			yyerror("address specified for outgoing divert");
4414			return (1);
4415		}
4416		bzero(&r->divert.addr, sizeof(r->divert.addr));
4417		return (0);
4418	}
4419
4420	if (!ds->addr) {
4421		yyerror("no address specified for incoming divert");
4422		return (1);
4423	}
4424	if (r->af) {
4425		for (n = ds->addr; n != NULL; n = n->next)
4426			if (n->af == r->af)
4427				break;
4428		if (n == NULL) {
4429			yyerror("address family mismatch for divert");
4430			return (1);
4431		}
4432		r->divert.addr = n->addr.v.a.addr;
4433	} else {
4434		r->af = ds->addr->af;
4435		r->divert.addr = ds->addr->addr.v.a.addr;
4436	}
4437	return (0);
4438}
4439
4440int
4441collapse_redirspec(struct pf_pool *rpool, struct pf_rule *r,
4442    struct redirspec *rs, u_int8_t allow_if)
4443{
4444	struct pf_opt_tbl *tbl = NULL;
4445	struct node_host *h, *hprev = NULL;
4446	struct pf_rule_addr ra;
4447	int af = 0, naddr = 0;
4448
4449	if (!rs || !rs->rdr || rs->rdr->host == NULL) {
4450		rpool->addr.type = PF_ADDR_NONE;
4451		return (0);
4452	}
4453
4454	if (r->rule_flag & PFRULE_AFTO)
4455		r->naf = rs->af;
4456
4457	for (h = rs->rdr->host; h != NULL; h = h->next) {
4458		/* set rule address family if redirect spec has one */
4459		if (rs->af && !r->af && !af) {
4460			/* swap address families for af-to */
4461			if (r->naf == AF_INET6)
4462				af = AF_INET;
4463			else if (r->naf == AF_INET)
4464				af = AF_INET6;
4465			else
4466				af = rs->af;
4467		}
4468		if (h->af && !r->naf) {	/* nat-to/rdr-to case */
4469			/* skip if the rule af doesn't match redirect af */
4470			if (r->af && r->af != h->af)
4471				continue;
4472			/*
4473			 * fail if the chosen af is not universal for
4474			 * all addresses in the redirect address pool
4475			 */
4476			if (!r->af && af && af != h->af) {
4477				yyerror("%s spec contains addresses with "
4478				    "different address families",
4479				    allow_if ? "routing" : "translation");
4480				return (1);
4481			}
4482		} else if (h->af) {	/* af-to case */
4483			/*
4484			 * fail if the redirect spec af is not universal
4485			 * for all addresses in the redirect address pool
4486			 */
4487			if (rs->af && rs->af != h->af) {
4488				yyerror("%s spec contains addresses that "
4489				    "don't match target address family",
4490				    allow_if ? "routing" : "translation");
4491				return (1);
4492			}
4493		}
4494		/* else if (!h->af):
4495		 * we silently allow any not af-specific host specs,
4496		 * e.g. (em0) and let the kernel deal with them
4497		 */
4498
4499		/* if we haven't selected the rule af yet, now it's time */
4500		if (!r->af && !af)
4501			af = h->af;
4502
4503		if (naddr == 0) {	/* the first host */
4504			rpool->addr = h->addr;
4505			if (!allow_if && h->ifname) {
4506				yyerror("@if not permitted for translation");
4507				return (1);
4508			}
4509			if (h->ifname && strlcpy(rpool->ifname, h->ifname,
4510			    sizeof(rpool->ifname)) >= sizeof(rpool->ifname))
4511				errx(1, "collapse_redirspec: strlcpy");
4512			hprev = h; /* in case we need to conver to a table */
4513		} else {		/* multiple hosts */
4514			if (rs->pool_opts.type &&
4515			    !PF_POOL_DYNTYPE(rs->pool_opts.type)) {
4516				yyerror("pool type is not valid for multiple "
4517				    "translation or routing addresses");
4518				return (1);
4519			}
4520			if ((hprev && hprev->addr.type != PF_ADDR_ADDRMASK) &&
4521			    (hprev && hprev->addr.type != PF_ADDR_NONE) &&
4522			    h->addr.type != PF_ADDR_ADDRMASK &&
4523			    h->addr.type != PF_ADDR_NONE) {
4524				yyerror("multiple tables or dynamic interfaces "
4525				    "not supported for translation or routing");
4526				return (1);
4527			}
4528			if (!allow_if && h->ifname) {
4529				yyerror("@if not permitted for translation");
4530				return (1);
4531			}
4532			if (hprev) {
4533				/*
4534				 * undo some damage and convert the single
4535				 * host pool to the table
4536				 */
4537				memset(&ra, 0, sizeof(ra));
4538				memset(rpool->ifname, 0, sizeof(rpool->ifname));
4539				ra.addr = hprev->addr;
4540				ra.weight = hprev->weight;
4541				if (add_opt_table(pf, &tbl,
4542				    hprev->af, &ra, hprev->ifname))
4543					return (1);
4544				hprev = NULL;
4545			}
4546			memset(&ra, 0, sizeof(ra));
4547			ra.addr = h->addr;
4548			ra.weight = h->weight;
4549			if (add_opt_table(pf, &tbl,
4550			    h->af, &ra, h->ifname))
4551				return (1);
4552		}
4553		naddr++;
4554	}
4555	/* set rule af to the one chosen above */
4556	if (!r->af && af)
4557		r->af = af;
4558	if (!naddr) {
4559		yyerror("af mismatch in %s spec",
4560		    allow_if ? "routing" : "translation");
4561		return (1);
4562	}
4563	if (tbl) {
4564		if ((pf->opts & PF_OPT_NOACTION) == 0 &&
4565		     pf_opt_create_table(pf, tbl))
4566				return (1);
4567
4568		pf->tdirty = 1;
4569
4570		if (pf->opts & PF_OPT_VERBOSE)
4571			print_tabledef(tbl->pt_name,
4572			    PFR_TFLAG_CONST | tbl->pt_flags,
4573			    1, &tbl->pt_nodes);
4574
4575		memset(&rpool->addr, 0, sizeof(rpool->addr));
4576		rpool->addr.type = PF_ADDR_TABLE;
4577		strlcpy(rpool->addr.v.tblname, tbl->pt_name,
4578		    sizeof(rpool->addr.v.tblname));
4579
4580		pfr_buf_clear(tbl->pt_buf);
4581		free(tbl->pt_buf);
4582		tbl->pt_buf = NULL;
4583		free(tbl);
4584	}
4585	return (0);
4586}
4587
4588
4589int
4590apply_redirspec(struct pf_pool *rpool, struct pf_rule *r, struct redirspec *rs,
4591    int isrdr, struct node_port *np)
4592{
4593	if (!rs || !rs->rdr)
4594		return (0);
4595
4596	rpool->proxy_port[0] = ntohs(rs->rdr->rport.a);
4597
4598	if (isrdr) {
4599		if (!rs->rdr->rport.b && rs->rdr->rport.t && np->port != NULL) {
4600			rpool->proxy_port[1] = ntohs(rs->rdr->rport.a) +
4601			    (ntohs(np->port[1]) - ntohs(np->port[0]));
4602		} else
4603			rpool->proxy_port[1] = ntohs(rs->rdr->rport.b);
4604	} else {
4605		rpool->proxy_port[1] = ntohs(rs->rdr->rport.b);
4606		if (!rpool->proxy_port[0] && !rpool->proxy_port[1]) {
4607			rpool->proxy_port[0] = PF_NAT_PROXY_PORT_LOW;
4608			rpool->proxy_port[1] = PF_NAT_PROXY_PORT_HIGH;
4609		} else if (!rpool->proxy_port[1])
4610			rpool->proxy_port[1] = rpool->proxy_port[0];
4611	}
4612
4613	rpool->opts = rs->pool_opts.type;
4614	if ((rpool->opts & PF_POOL_TYPEMASK) == PF_POOL_NONE &&
4615	    (rpool->addr.type == PF_ADDR_TABLE ||
4616	    DYNIF_MULTIADDR(rpool->addr)))
4617		rpool->opts |= PF_POOL_ROUNDROBIN;
4618
4619	if (!PF_POOL_DYNTYPE(rpool->opts) &&
4620	    (disallow_table(rs->rdr->host,
4621	    "tables are not supported by pool type") ||
4622	    disallow_alias(rs->rdr->host,
4623	    "interface (%s) is not supported by pool type")))
4624		return (1);
4625
4626	if (rs->pool_opts.key != NULL)
4627		memcpy(&rpool->key, rs->pool_opts.key,
4628		    sizeof(struct pf_poolhashkey));
4629
4630	if (rs->pool_opts.opts)
4631		rpool->opts |= rs->pool_opts.opts;
4632
4633	if (rs->pool_opts.staticport) {
4634		if (isrdr) {
4635			yyerror("the 'static-port' option is only valid with "
4636			    "nat rules");
4637			return (1);
4638		}
4639		if (rpool->proxy_port[0] != PF_NAT_PROXY_PORT_LOW &&
4640		    rpool->proxy_port[1] != PF_NAT_PROXY_PORT_HIGH) {
4641			yyerror("the 'static-port' option can't be used when "
4642			    "specifying a port range");
4643			return (1);
4644		}
4645		rpool->proxy_port[0] = 0;
4646		rpool->proxy_port[1] = 0;
4647	}
4648
4649	return (0);
4650}
4651
4652
4653void
4654expand_rule(struct pf_rule *r, int keeprule, struct node_if *interfaces,
4655    struct redirspec *nat, struct redirspec *rdr, struct redirspec *rroute,
4656    struct node_proto *protos, struct node_os *src_oses,
4657    struct node_host *src_hosts, struct node_port *src_ports,
4658    struct node_host *dst_hosts, struct node_port *dst_ports,
4659    struct node_uid *uids, struct node_gid *gids, struct node_if *rcv,
4660    struct node_icmp *icmp_types, const char *anchor_call)
4661{
4662	sa_family_t		 af = r->af;
4663	int			 added = 0, error = 0;
4664	char			 ifname[IF_NAMESIZE];
4665	char			 label[PF_RULE_LABEL_SIZE];
4666	char			 tagname[PF_TAG_NAME_SIZE];
4667	char			 match_tagname[PF_TAG_NAME_SIZE];
4668	u_int8_t		 flags, flagset, keep_state;
4669	struct node_host	*srch, *dsth, *osrch, *odsth;
4670	struct redirspec	 binat;
4671	struct pf_rule		 rb;
4672	int			 dir = r->direction;
4673
4674	if (strlcpy(label, r->label, sizeof(label)) >= sizeof(label))
4675		errx(1, "expand_rule: strlcpy");
4676	if (strlcpy(tagname, r->tagname, sizeof(tagname)) >= sizeof(tagname))
4677		errx(1, "expand_rule: strlcpy");
4678	if (strlcpy(match_tagname, r->match_tagname, sizeof(match_tagname)) >=
4679	    sizeof(match_tagname))
4680		errx(1, "expand_rule: strlcpy");
4681	flags = r->flags;
4682	flagset = r->flagset;
4683	keep_state = r->keep_state;
4684
4685	r->src.addr.type = r->dst.addr.type = PF_ADDR_ADDRMASK;
4686
4687	LOOP_THROUGH(struct node_if, interface, interfaces,
4688	LOOP_THROUGH(struct node_proto, proto, protos,
4689	LOOP_THROUGH(struct node_icmp, icmp_type, icmp_types,
4690	LOOP_THROUGH(struct node_host, src_host, src_hosts,
4691	LOOP_THROUGH(struct node_host, dst_host, dst_hosts,
4692	LOOP_THROUGH(struct node_port, src_port, src_ports,
4693	LOOP_THROUGH(struct node_port, dst_port, dst_ports,
4694	LOOP_THROUGH(struct node_os, src_os, src_oses,
4695	LOOP_THROUGH(struct node_uid, uid, uids,
4696	LOOP_THROUGH(struct node_gid, gid, gids,
4697
4698		r->af = af;
4699
4700		error += collapse_redirspec(&r->rdr, r, rdr, 0);
4701		error += collapse_redirspec(&r->nat, r, nat, 0);
4702		error += collapse_redirspec(&r->route, r, rroute, 1);
4703
4704		/* disallow @if in from or to for the time being */
4705		if ((src_host->addr.type == PF_ADDR_ADDRMASK &&
4706		    src_host->ifname) ||
4707		    (dst_host->addr.type == PF_ADDR_ADDRMASK &&
4708		    dst_host->ifname)) {
4709			yyerror("@if syntax not permitted in from or to");
4710			error++;
4711		}
4712		/* for link-local IPv6 address, interface must match up */
4713		if ((r->af && src_host->af && r->af != src_host->af) ||
4714		    (r->af && dst_host->af && r->af != dst_host->af) ||
4715		    (src_host->af && dst_host->af &&
4716		    src_host->af != dst_host->af) ||
4717		    (src_host->ifindex && dst_host->ifindex &&
4718		    src_host->ifindex != dst_host->ifindex) ||
4719		    (src_host->ifindex && *interface->ifname &&
4720		    src_host->ifindex != ifa_nametoindex(interface->ifname)) ||
4721		    (dst_host->ifindex && *interface->ifname &&
4722		    dst_host->ifindex != ifa_nametoindex(interface->ifname)))
4723			continue;
4724		if (!r->af && src_host->af)
4725			r->af = src_host->af;
4726		else if (!r->af && dst_host->af)
4727			r->af = dst_host->af;
4728
4729		if (*interface->ifname)
4730			strlcpy(r->ifname, interface->ifname,
4731			    sizeof(r->ifname));
4732		else if (ifa_indextoname(src_host->ifindex, ifname))
4733			strlcpy(r->ifname, ifname, sizeof(r->ifname));
4734		else if (ifa_indextoname(dst_host->ifindex, ifname))
4735			strlcpy(r->ifname, ifname, sizeof(r->ifname));
4736		else
4737			memset(r->ifname, '\0', sizeof(r->ifname));
4738
4739		if (interface->use_rdomain)
4740			r->onrdomain = interface->rdomain;
4741		else
4742			r->onrdomain = -1;
4743		if (strlcpy(r->label, label, sizeof(r->label)) >=
4744		    sizeof(r->label))
4745			errx(1, "expand_rule: strlcpy");
4746		if (strlcpy(r->tagname, tagname, sizeof(r->tagname)) >=
4747		    sizeof(r->tagname))
4748			errx(1, "expand_rule: strlcpy");
4749		if (strlcpy(r->match_tagname, match_tagname,
4750		    sizeof(r->match_tagname)) >= sizeof(r->match_tagname))
4751			errx(1, "expand_rule: strlcpy");
4752		expand_label(r->label, PF_RULE_LABEL_SIZE, r->ifname, r->af,
4753		    src_host, src_port, dst_host, dst_port, proto->proto);
4754		expand_label(r->tagname, PF_TAG_NAME_SIZE, r->ifname, r->af,
4755		    src_host, src_port, dst_host, dst_port, proto->proto);
4756		expand_label(r->match_tagname, PF_TAG_NAME_SIZE, r->ifname,
4757		    r->af, src_host, src_port, dst_host, dst_port,
4758		    proto->proto);
4759
4760		osrch = odsth = NULL;
4761		if (src_host->addr.type == PF_ADDR_DYNIFTL) {
4762			osrch = src_host;
4763			if ((src_host = gen_dynnode(src_host, r->af)) == NULL)
4764				err(1, "expand_rule: calloc");
4765		}
4766		if (dst_host->addr.type == PF_ADDR_DYNIFTL) {
4767			odsth = dst_host;
4768			if ((dst_host = gen_dynnode(dst_host, r->af)) == NULL)
4769				err(1, "expand_rule: calloc");
4770		}
4771
4772		error += check_netmask(src_host, r->af);
4773		error += check_netmask(dst_host, r->af);
4774
4775		r->ifnot = interface->not;
4776		r->proto = proto->proto;
4777		r->src.addr = src_host->addr;
4778		r->src.neg = src_host->not;
4779		r->src.port[0] = src_port->port[0];
4780		r->src.port[1] = src_port->port[1];
4781		r->src.port_op = src_port->op;
4782		r->dst.addr = dst_host->addr;
4783		r->dst.neg = dst_host->not;
4784		r->dst.port[0] = dst_port->port[0];
4785		r->dst.port[1] = dst_port->port[1];
4786		r->dst.port_op = dst_port->op;
4787		r->uid.op = uid->op;
4788		r->uid.uid[0] = uid->uid[0];
4789		r->uid.uid[1] = uid->uid[1];
4790		r->gid.op = gid->op;
4791		r->gid.gid[0] = gid->gid[0];
4792		r->gid.gid[1] = gid->gid[1];
4793		if (rcv) {
4794			strlcpy(r->rcv_ifname, rcv->ifname,
4795			    sizeof(r->rcv_ifname));
4796			r->rcvifnot = rcv->not;
4797		}
4798		r->type = icmp_type->type;
4799		r->code = icmp_type->code;
4800
4801		if ((keep_state == PF_STATE_MODULATE ||
4802		    keep_state == PF_STATE_SYNPROXY) &&
4803		    r->proto && r->proto != IPPROTO_TCP)
4804			r->keep_state = PF_STATE_NORMAL;
4805		else
4806			r->keep_state = keep_state;
4807
4808		if (r->proto && r->proto != IPPROTO_TCP) {
4809			r->flags = 0;
4810			r->flagset = 0;
4811		} else {
4812			r->flags = flags;
4813			r->flagset = flagset;
4814		}
4815		if (icmp_type->proto && r->proto != icmp_type->proto) {
4816			yyerror("icmp-type mismatch");
4817			error++;
4818		}
4819
4820		if (src_os && src_os->os) {
4821			r->os_fingerprint = pfctl_get_fingerprint(src_os->os);
4822			if ((pf->opts & PF_OPT_VERBOSE2) &&
4823			    r->os_fingerprint == PF_OSFP_NOMATCH)
4824				fprintf(stderr,
4825				    "warning: unknown '%s' OS fingerprint\n",
4826				    src_os->os);
4827		} else {
4828			r->os_fingerprint = PF_OSFP_ANY;
4829		}
4830
4831		if (nat && nat->rdr && nat->binat) {
4832			if (disallow_table(src_host, "invalid use of table "
4833			    "<%s> as the source address of a binat-to rule") ||
4834			    disallow_alias(src_host, "invalid use of interface "
4835			    "(%s) as the source address of a binat-to rule")) {
4836				error++;
4837			} else if ((r->src.addr.type != PF_ADDR_ADDRMASK &&
4838			    r->src.addr.type != PF_ADDR_DYNIFTL) ||
4839			    (r->nat.addr.type != PF_ADDR_ADDRMASK &&
4840			    r->nat.addr.type != PF_ADDR_DYNIFTL)) {
4841				yyerror("binat-to requires a specified "
4842				    "source and redirect address");
4843				error++;
4844			}
4845			if (DYNIF_MULTIADDR(r->src.addr) ||
4846			    DYNIF_MULTIADDR(r->nat.addr)) {
4847				yyerror ("dynamic interfaces must be used with "
4848				    ":0 in a binat-to rule");
4849				error++;
4850			}
4851			if (PF_AZERO(&r->src.addr.v.a.mask, af) ||
4852			    PF_AZERO(&r->nat.addr.v.a.mask, af)) {
4853				yyerror ("source and redir addresess must have "
4854				    "a matching network mask in binat-rule");
4855				error++;
4856			}
4857			if (r->nat.addr.type == PF_ADDR_TABLE) {
4858				yyerror ("tables cannot be used as the redirect "
4859				    "address of a binat-to rule");
4860				error++;
4861			}
4862			if (r->direction != PF_INOUT) {
4863				yyerror("binat-to cannot be specified "
4864				    "with a direction");
4865				error++;
4866			}
4867
4868			/* first specify outbound NAT rule */
4869			r->direction = PF_OUT;
4870		}
4871
4872		error += apply_redirspec(&r->nat, r, nat, 0, dst_port);
4873		error += apply_redirspec(&r->rdr, r, rdr, 1, dst_port);
4874		error += apply_redirspec(&r->route, r, rroute, 2, dst_port);
4875
4876		if (rule_consistent(r, anchor_call[0]) < 0 || error)
4877			yyerror("skipping rule due to errors");
4878		else {
4879			r->nr = pf->astack[pf->asd]->match++;
4880			pfctl_add_rule(pf, r, anchor_call);
4881			added++;
4882		}
4883		r->direction = dir;
4884
4885		/* Generate binat's matching inbound rule */
4886		if (!error && nat && nat->rdr && nat->binat) {
4887			bcopy(r, &rb, sizeof(rb));
4888
4889			/* now specify inbound rdr rule */
4890			rb.direction = PF_IN;
4891
4892			if ((srch = calloc(1, sizeof(*srch))) == NULL)
4893				err(1, "expand_rule: calloc");
4894			bcopy(src_host, srch, sizeof(*srch));
4895			srch->ifname = NULL;
4896			srch->next = NULL;
4897			srch->tail = NULL;
4898
4899			if ((dsth = calloc(1, sizeof(*dsth))) == NULL)
4900				err(1, "expand_rule: calloc");
4901			bcopy(&rb.nat.addr, &dsth->addr, sizeof(dsth->addr));
4902			dsth->ifname = NULL;
4903			dsth->next = NULL;
4904			dsth->tail = NULL;
4905
4906			bzero(&binat, sizeof(binat));
4907			if ((binat.rdr =
4908			    calloc(1, sizeof(*binat.rdr))) == NULL)
4909				err(1, "expand_rule: calloc");
4910			bcopy(nat->rdr, binat.rdr, sizeof(*binat.rdr));
4911			bcopy(&nat->pool_opts, &binat.pool_opts,
4912			    sizeof(binat.pool_opts));
4913			binat.pool_opts.staticport = 0;
4914			binat.rdr->host = srch;
4915
4916			expand_rule(&rb, 1, interface, NULL, &binat, NULL,
4917			    proto,
4918			    src_os, dst_host, dst_port, dsth, src_port,
4919			    uid, gid, rcv, icmp_type, anchor_call);
4920		}
4921
4922		if (osrch && src_host->addr.type == PF_ADDR_DYNIFTL) {
4923			free(src_host);
4924			src_host = osrch;
4925		}
4926		if (odsth && dst_host->addr.type == PF_ADDR_DYNIFTL) {
4927			free(dst_host);
4928			dst_host = odsth;
4929		}
4930	))))))))));
4931
4932	if (!keeprule) {
4933		FREE_LIST(struct node_if, interfaces);
4934		FREE_LIST(struct node_proto, protos);
4935		FREE_LIST(struct node_host, src_hosts);
4936		FREE_LIST(struct node_port, src_ports);
4937		FREE_LIST(struct node_os, src_oses);
4938		FREE_LIST(struct node_host, dst_hosts);
4939		FREE_LIST(struct node_port, dst_ports);
4940		FREE_LIST(struct node_uid, uids);
4941		FREE_LIST(struct node_gid, gids);
4942		FREE_LIST(struct node_icmp, icmp_types);
4943		if (nat && nat->rdr)
4944			FREE_LIST(struct node_host, nat->rdr->host);
4945		if (rdr && rdr->rdr)
4946			FREE_LIST(struct node_host, rdr->rdr->host);
4947
4948	}
4949
4950	if (!added)
4951		yyerror("rule expands to no valid combination");
4952}
4953
4954int
4955expand_skip_interface(struct node_if *interfaces)
4956{
4957	int	errs = 0;
4958
4959	if (!interfaces || (!interfaces->next && !interfaces->not &&
4960	    !strcmp(interfaces->ifname, "none"))) {
4961		if (pf->opts & PF_OPT_VERBOSE)
4962			printf("set skip on none\n");
4963		errs = pfctl_set_interface_flags(pf, "", PFI_IFLAG_SKIP, 0);
4964		return (errs);
4965	}
4966
4967	if (pf->opts & PF_OPT_VERBOSE)
4968		printf("set skip on {");
4969	LOOP_THROUGH(struct node_if, interface, interfaces,
4970		if (pf->opts & PF_OPT_VERBOSE)
4971			printf(" %s", interface->ifname);
4972		if (interface->not) {
4973			yyerror("skip on ! <interface> is not supported");
4974			errs++;
4975		} else if (interface->use_rdomain) {
4976			yyerror("skip on rdomain <num> is not supported");
4977			errs++;
4978		} else
4979			errs += pfctl_set_interface_flags(pf,
4980			    interface->ifname, PFI_IFLAG_SKIP, 1);
4981	);
4982	if (pf->opts & PF_OPT_VERBOSE)
4983		printf(" }\n");
4984
4985	FREE_LIST(struct node_if, interfaces);
4986
4987	if (errs)
4988		return (1);
4989	else
4990		return (0);
4991}
4992
4993void
4994freehostlist(struct node_host *h)
4995{
4996	struct node_host *n;
4997
4998	for (n = h; n != NULL; n = n->next)
4999		if (n->ifname)
5000			free(n->ifname);
5001	FREE_LIST(struct node_host, h);
5002}
5003
5004#undef FREE_LIST
5005#undef LOOP_THROUGH
5006
5007int
5008kw_cmp(const void *k, const void *e)
5009{
5010	return (strcmp(k, ((const struct keywords *)e)->k_name));
5011}
5012
5013int
5014lookup(char *s)
5015{
5016	/* this has to be sorted always */
5017	static const struct keywords keywords[] = {
5018		{ "af-to",		AFTO},
5019		{ "all",		ALL},
5020		{ "allow-opts",		ALLOWOPTS},
5021		{ "anchor",		ANCHOR},
5022		{ "antispoof",		ANTISPOOF},
5023		{ "any",		ANY},
5024		{ "bandwidth",		BANDWIDTH},
5025		{ "binat-to",		BINATTO},
5026		{ "bitmask",		BITMASK},
5027		{ "block",		BLOCK},
5028		{ "block-policy",	BLOCKPOLICY},
5029		{ "burst",		BURST},
5030		{ "code",		CODE},
5031		{ "debug",		DEBUG},
5032		{ "default",		DEFAULT},
5033		{ "divert-packet",	DIVERTPACKET},
5034		{ "divert-reply",	DIVERTREPLY},
5035		{ "divert-to",		DIVERTTO},
5036		{ "drop",		DROP},
5037		{ "dup-to",		DUPTO},
5038		{ "file",		FILENAME},
5039		{ "fingerprints",	FINGERPRINTS},
5040		{ "flags",		FLAGS},
5041		{ "floating",		FLOATING},
5042		{ "flows",		FLOWS},
5043		{ "flush",		FLUSH},
5044		{ "for",		FOR},
5045		{ "fragment",		FRAGMENT},
5046		{ "from",		FROM},
5047		{ "global",		GLOBAL},
5048		{ "group",		GROUP},
5049		{ "hostid",		HOSTID},
5050		{ "icmp-type",		ICMPTYPE},
5051		{ "icmp6-type",		ICMP6TYPE},
5052		{ "if-bound",		IFBOUND},
5053		{ "in",			IN},
5054		{ "include",		INCLUDE},
5055		{ "inet",		INET},
5056		{ "inet6",		INET6},
5057		{ "keep",		KEEP},
5058		{ "label",		LABEL},
5059		{ "least-states",	LEASTSTATES},
5060		{ "limit",		LIMIT},
5061		{ "load",		LOAD},
5062		{ "log",		LOG},
5063		{ "loginterface",	LOGINTERFACE},
5064		{ "match",		MATCH},
5065		{ "matches",		MATCHES},
5066		{ "max",		MAXIMUM},
5067		{ "max-mss",		MAXMSS},
5068		{ "max-src-conn",	MAXSRCCONN},
5069		{ "max-src-conn-rate",	MAXSRCCONNRATE},
5070		{ "max-src-nodes",	MAXSRCNODES},
5071		{ "max-src-states",	MAXSRCSTATES},
5072		{ "min",		MINIMUM},
5073		{ "min-ttl",		MINTTL},
5074		{ "modulate",		MODULATE},
5075		{ "nat-to",		NATTO},
5076		{ "no",			NO},
5077		{ "no-df",		NODF},
5078		{ "no-route",		NOROUTE},
5079		{ "no-sync",		NOSYNC},
5080		{ "on",			ON},
5081		{ "once",		ONCE},
5082		{ "optimization",	OPTIMIZATION},
5083		{ "os",			OS},
5084		{ "out",		OUT},
5085		{ "overload",		OVERLOAD},
5086		{ "parent",		PARENT},
5087		{ "pass",		PASS},
5088		{ "pflow",		PFLOW},
5089		{ "port",		PORT},
5090		{ "prio",		PRIO},
5091		{ "probability",	PROBABILITY},
5092		{ "proto",		PROTO},
5093		{ "qlimit",		QLIMIT},
5094		{ "quantum",		QUANTUM},
5095		{ "queue",		QUEUE},
5096		{ "quick",		QUICK},
5097		{ "random",		RANDOM},
5098		{ "random-id",		RANDOMID},
5099		{ "rdomain",		RDOMAIN},
5100		{ "rdr-to",		RDRTO},
5101		{ "reassemble",		REASSEMBLE},
5102		{ "received-on",	RECEIVEDON},
5103		{ "reply-to",		REPLYTO},
5104		{ "return",		RETURN},
5105		{ "return-icmp",	RETURNICMP},
5106		{ "return-icmp6",	RETURNICMP6},
5107		{ "return-rst",		RETURNRST},
5108		{ "round-robin",	ROUNDROBIN},
5109		{ "route",		ROUTE},
5110		{ "route-to",		ROUTETO},
5111		{ "rtable",		RTABLE},
5112		{ "rule",		RULE},
5113		{ "ruleset-optimization",	RULESET_OPTIMIZATION},
5114		{ "scrub",		SCRUB},
5115		{ "set",		SET},
5116		{ "skip",		SKIP},
5117		{ "sloppy",		SLOPPY},
5118		{ "source-hash",	SOURCEHASH},
5119		{ "source-track",	SOURCETRACK},
5120		{ "state",		STATE},
5121		{ "state-defaults",	STATEDEFAULTS},
5122		{ "state-policy",	STATEPOLICY},
5123		{ "static-port",	STATICPORT},
5124		{ "sticky-address",	STICKYADDRESS},
5125		{ "synproxy",		SYNPROXY},
5126		{ "table",		TABLE},
5127		{ "tag",		TAG},
5128		{ "tagged",		TAGGED},
5129		{ "timeout",		TIMEOUT},
5130		{ "to",			TO},
5131		{ "tos",		TOS},
5132		{ "ttl",		TTL},
5133		{ "urpf-failed",	URPFFAILED},
5134		{ "user",		USER},
5135		{ "weight",		WEIGHT},
5136	};
5137	const struct keywords	*p;
5138
5139	p = bsearch(s, keywords, sizeof(keywords)/sizeof(keywords[0]),
5140	    sizeof(keywords[0]), kw_cmp);
5141
5142	if (p) {
5143		if (debug > 1)
5144			fprintf(stderr, "%s: %d\n", s, p->k_val);
5145		return (p->k_val);
5146	} else {
5147		if (debug > 1)
5148			fprintf(stderr, "string: %s\n", s);
5149		return (STRING);
5150	}
5151}
5152
5153#define MAXPUSHBACK	128
5154
5155u_char	*parsebuf;
5156int	 parseindex;
5157u_char	 pushback_buffer[MAXPUSHBACK];
5158int	 pushback_index = 0;
5159
5160int
5161lgetc(int quotec)
5162{
5163	int		c, next;
5164
5165	if (parsebuf) {
5166		/* Read character from the parsebuffer instead of input. */
5167		if (parseindex >= 0) {
5168			c = parsebuf[parseindex++];
5169			if (c != '\0')
5170				return (c);
5171			parsebuf = NULL;
5172		} else
5173			parseindex++;
5174	}
5175
5176	if (pushback_index)
5177		return (pushback_buffer[--pushback_index]);
5178
5179	if (quotec) {
5180		if ((c = getc(file->stream)) == EOF) {
5181			yyerror("reached end of file while parsing quoted string");
5182			if (popfile() == EOF)
5183				return (EOF);
5184			return (quotec);
5185		}
5186		return (c);
5187	}
5188
5189	while ((c = getc(file->stream)) == '\\') {
5190		next = getc(file->stream);
5191		if (next != '\n') {
5192			c = next;
5193			break;
5194		}
5195		yylval.lineno = file->lineno;
5196		file->lineno++;
5197	}
5198
5199	while (c == EOF) {
5200		if (popfile() == EOF)
5201			return (EOF);
5202		c = getc(file->stream);
5203	}
5204	return (c);
5205}
5206
5207int
5208lungetc(int c)
5209{
5210	if (c == EOF)
5211		return (EOF);
5212	if (parsebuf) {
5213		parseindex--;
5214		if (parseindex >= 0)
5215			return (c);
5216	}
5217	if (pushback_index < MAXPUSHBACK-1)
5218		return (pushback_buffer[pushback_index++] = c);
5219	else
5220		return (EOF);
5221}
5222
5223int
5224findeol(void)
5225{
5226	int	c;
5227
5228	parsebuf = NULL;
5229
5230	/* skip to either EOF or the first real EOL */
5231	while (1) {
5232		if (pushback_index)
5233			c = pushback_buffer[--pushback_index];
5234		else
5235			c = lgetc(0);
5236		if (c == '\n') {
5237			file->lineno++;
5238			break;
5239		}
5240		if (c == EOF)
5241			break;
5242	}
5243	return (ERROR);
5244}
5245
5246int
5247yylex(void)
5248{
5249	u_char	 buf[8096];
5250	u_char	*p, *val;
5251	int	 quotec, next, c;
5252	int	 token;
5253
5254top:
5255	p = buf;
5256	while ((c = lgetc(0)) == ' ' || c == '\t')
5257		; /* nothing */
5258
5259	yylval.lineno = file->lineno;
5260	if (c == '#')
5261		while ((c = lgetc(0)) != '\n' && c != EOF)
5262			; /* nothing */
5263	if (c == '$' && parsebuf == NULL) {
5264		while (1) {
5265			if ((c = lgetc(0)) == EOF)
5266				return (0);
5267
5268			if (p + 1 >= buf + sizeof(buf) - 1) {
5269				yyerror("string too long");
5270				return (findeol());
5271			}
5272			if (isalnum(c) || c == '_') {
5273				*p++ = c;
5274				continue;
5275			}
5276			*p = '\0';
5277			lungetc(c);
5278			break;
5279		}
5280		val = symget(buf);
5281		if (val == NULL) {
5282			yyerror("macro '%s' not defined", buf);
5283			return (findeol());
5284		}
5285		parsebuf = val;
5286		parseindex = 0;
5287		goto top;
5288	}
5289
5290	switch (c) {
5291	case '\'':
5292	case '"':
5293		quotec = c;
5294		while (1) {
5295			if ((c = lgetc(quotec)) == EOF)
5296				return (0);
5297			if (c == '\n') {
5298				file->lineno++;
5299				continue;
5300			} else if (c == '\\') {
5301				if ((next = lgetc(quotec)) == EOF)
5302					return (0);
5303				if (next == quotec || c == ' ' || c == '\t')
5304					c = next;
5305				else if (next == '\n') {
5306					file->lineno++;
5307					continue;
5308				} else
5309					lungetc(next);
5310			} else if (c == quotec) {
5311				*p = '\0';
5312				break;
5313			} else if (c == '\0') {
5314				yyerror("syntax error");
5315				return (findeol());
5316			}
5317			if (p + 1 >= buf + sizeof(buf) - 1) {
5318				yyerror("string too long");
5319				return (findeol());
5320			}
5321			*p++ = c;
5322		}
5323		yylval.v.string = strdup(buf);
5324		if (yylval.v.string == NULL)
5325			err(1, "yylex: strdup");
5326		return (STRING);
5327	case '!':
5328		next = lgetc(0);
5329		if (next == '=')
5330			return (NE);
5331		lungetc(next);
5332		break;
5333	case '<':
5334		next = lgetc(0);
5335		if (next == '>') {
5336			yylval.v.i = PF_OP_XRG;
5337			return (PORTBINARY);
5338		} else if (next == '=')
5339			return (LE);
5340		lungetc(next);
5341		break;
5342	case '>':
5343		next = lgetc(0);
5344		if (next == '<') {
5345			yylval.v.i = PF_OP_IRG;
5346			return (PORTBINARY);
5347		} else if (next == '=')
5348			return (GE);
5349		lungetc(next);
5350		break;
5351	}
5352
5353#define allowed_to_end_number(x) \
5354	(isspace(x) || x == ')' || x ==',' || x == '/' || x == '}' || x == '=')
5355
5356	if (c == '-' || isdigit(c)) {
5357		do {
5358			*p++ = c;
5359			if ((unsigned)(p-buf) >= sizeof(buf)) {
5360				yyerror("string too long");
5361				return (findeol());
5362			}
5363		} while ((c = lgetc(0)) != EOF && isdigit(c));
5364		lungetc(c);
5365		if (p == buf + 1 && buf[0] == '-')
5366			goto nodigits;
5367		if (c == EOF || allowed_to_end_number(c)) {
5368			const char *errstr = NULL;
5369
5370			*p = '\0';
5371			yylval.v.number = strtonum(buf, LLONG_MIN,
5372			    LLONG_MAX, &errstr);
5373			if (errstr) {
5374				yyerror("\"%s\" invalid number: %s",
5375				    buf, errstr);
5376				return (findeol());
5377			}
5378			return (NUMBER);
5379		} else {
5380nodigits:
5381			while (p > buf + 1)
5382				lungetc(*--p);
5383			c = *--p;
5384			if (c == '-')
5385				return (c);
5386		}
5387	}
5388
5389#define allowed_in_string(x) \
5390	(isalnum(x) || (ispunct(x) && x != '(' && x != ')' && \
5391	x != '{' && x != '}' && x != '<' && x != '>' && \
5392	x != '!' && x != '=' && x != '/' && x != '#' && \
5393	x != ','))
5394
5395	if (isalnum(c) || c == ':' || c == '_') {
5396		do {
5397			*p++ = c;
5398			if ((unsigned)(p-buf) >= sizeof(buf)) {
5399				yyerror("string too long");
5400				return (findeol());
5401			}
5402		} while ((c = lgetc(0)) != EOF && (allowed_in_string(c)));
5403		lungetc(c);
5404		*p = '\0';
5405		if ((token = lookup(buf)) == STRING)
5406			if ((yylval.v.string = strdup(buf)) == NULL)
5407				err(1, "yylex: strdup");
5408		return (token);
5409	}
5410	if (c == '\n') {
5411		yylval.lineno = file->lineno;
5412		file->lineno++;
5413	}
5414	if (c == EOF)
5415		return (0);
5416	return (c);
5417}
5418
5419int
5420check_file_secrecy(int fd, const char *fname)
5421{
5422	struct stat	st;
5423
5424	if (fstat(fd, &st)) {
5425		warn("cannot stat %s", fname);
5426		return (-1);
5427	}
5428	if (st.st_uid != 0 && st.st_uid != getuid()) {
5429		warnx("%s: owner not root or current user", fname);
5430		return (-1);
5431	}
5432	if (st.st_mode & (S_IWGRP | S_IXGRP | S_IRWXO)) {
5433		warnx("%s: group writable or world read/writable", fname);
5434		return (-1);
5435	}
5436	return (0);
5437}
5438
5439struct file *
5440pushfile(const char *name, int secret)
5441{
5442	struct file	*nfile;
5443
5444	if ((nfile = calloc(1, sizeof(struct file))) == NULL ||
5445	    (nfile->name = strdup(name)) == NULL) {
5446		if (nfile)
5447			free(nfile);
5448		warn("malloc");
5449		return (NULL);
5450	}
5451	if (TAILQ_FIRST(&files) == NULL && strcmp(nfile->name, "-") == 0) {
5452		nfile->stream = stdin;
5453		free(nfile->name);
5454		if ((nfile->name = strdup("stdin")) == NULL) {
5455			warn("strdup");
5456			free(nfile);
5457			return (NULL);
5458		}
5459	} else if ((nfile->stream = fopen(nfile->name, "r")) == NULL) {
5460		warn("%s", nfile->name);
5461		free(nfile->name);
5462		free(nfile);
5463		return (NULL);
5464	} else if (secret &&
5465	    check_file_secrecy(fileno(nfile->stream), nfile->name)) {
5466		fclose(nfile->stream);
5467		free(nfile->name);
5468		free(nfile);
5469		return (NULL);
5470	}
5471	nfile->lineno = 1;
5472	TAILQ_INSERT_TAIL(&files, nfile, entry);
5473	return (nfile);
5474}
5475
5476int
5477popfile(void)
5478{
5479	struct file	*prev;
5480
5481	if ((prev = TAILQ_PREV(file, files, entry)) != NULL) {
5482		prev->errors += file->errors;
5483		TAILQ_REMOVE(&files, file, entry);
5484		fclose(file->stream);
5485		free(file->name);
5486		free(file);
5487		file = prev;
5488		return (0);
5489	}
5490	return (EOF);
5491}
5492
5493int
5494parse_config(char *filename, struct pfctl *xpf)
5495{
5496	int		 errors = 0;
5497	struct sym	*sym;
5498
5499	pf = xpf;
5500	returnicmpdefault = (ICMP_UNREACH << 8) | ICMP_UNREACH_PORT;
5501	returnicmp6default =
5502	    (ICMP6_DST_UNREACH << 8) | ICMP6_DST_UNREACH_NOPORT;
5503	blockpolicy = PFRULE_DROP;
5504
5505	if ((file = pushfile(filename, 0)) == NULL) {
5506		warn("cannot open the main config file!");
5507		return (-1);
5508	}
5509
5510	yyparse();
5511	errors = file->errors;
5512	popfile();
5513
5514	/* Free macros and check which have not been used. */
5515	while ((sym = TAILQ_FIRST(&symhead))) {
5516		if ((pf->opts & PF_OPT_VERBOSE2) && !sym->used)
5517			fprintf(stderr, "warning: macro '%s' not "
5518			    "used\n", sym->nam);
5519		free(sym->nam);
5520		free(sym->val);
5521		TAILQ_REMOVE(&symhead, sym, entry);
5522		free(sym);
5523	}
5524
5525	return (errors ? -1 : 0);
5526}
5527
5528int
5529symset(const char *nam, const char *val, int persist)
5530{
5531	struct sym	*sym;
5532
5533	TAILQ_FOREACH(sym, &symhead, entry) {
5534		if (strcmp(nam, sym->nam) == 0)
5535			break;
5536	}
5537
5538	if (sym != NULL) {
5539		if (sym->persist == 1)
5540			return (0);
5541		else {
5542			free(sym->nam);
5543			free(sym->val);
5544			TAILQ_REMOVE(&symhead, sym, entry);
5545			free(sym);
5546		}
5547	}
5548	if ((sym = calloc(1, sizeof(*sym))) == NULL)
5549		return (-1);
5550
5551	sym->nam = strdup(nam);
5552	if (sym->nam == NULL) {
5553		free(sym);
5554		return (-1);
5555	}
5556	sym->val = strdup(val);
5557	if (sym->val == NULL) {
5558		free(sym->nam);
5559		free(sym);
5560		return (-1);
5561	}
5562	sym->used = 0;
5563	sym->persist = persist;
5564	TAILQ_INSERT_TAIL(&symhead, sym, entry);
5565	return (0);
5566}
5567
5568int
5569pfctl_cmdline_symset(char *s)
5570{
5571	char	*sym, *val;
5572	int	 ret;
5573
5574	if ((val = strrchr(s, '=')) == NULL)
5575		return (-1);
5576
5577	if ((sym = malloc(strlen(s) - strlen(val) + 1)) == NULL)
5578		err(1, "pfctl_cmdline_symset: malloc");
5579
5580	strlcpy(sym, s, strlen(s) - strlen(val) + 1);
5581
5582	ret = symset(sym, val + 1, 1);
5583	free(sym);
5584
5585	return (ret);
5586}
5587
5588char *
5589symget(const char *nam)
5590{
5591	struct sym	*sym;
5592
5593	TAILQ_FOREACH(sym, &symhead, entry) {
5594		if (strcmp(nam, sym->nam) == 0) {
5595			sym->used = 1;
5596			return (sym->val);
5597		}
5598	}
5599	return (NULL);
5600}
5601
5602void
5603mv_rules(struct pf_ruleset *src, struct pf_ruleset *dst)
5604{
5605	struct pf_rule *r;
5606
5607	while ((r = TAILQ_FIRST(src->rules.active.ptr)) != NULL) {
5608		TAILQ_REMOVE(src->rules.active.ptr, r, entries);
5609		TAILQ_INSERT_TAIL(dst->rules.active.ptr, r, entries);
5610		dst->anchor->match++;
5611	}
5612	src->anchor->match = 0;
5613	while ((r = TAILQ_FIRST(src->rules.inactive.ptr)) != NULL) {
5614		TAILQ_REMOVE(src->rules.inactive.ptr, r, entries);
5615		TAILQ_INSERT_TAIL(dst->rules.inactive.ptr, r, entries);
5616	}
5617}
5618
5619void
5620decide_address_family(struct node_host *n, sa_family_t *af)
5621{
5622	if (*af != 0 || n == NULL)
5623		return;
5624	*af = n->af;
5625	while ((n = n->next) != NULL) {
5626		if (n->af != *af) {
5627			*af = 0;
5628			return;
5629		}
5630	}
5631}
5632
5633int
5634invalid_redirect(struct node_host *nh, sa_family_t af)
5635{
5636	if (!af) {
5637		struct node_host *n;
5638
5639		/* tables and dyniftl are ok without an address family */
5640		for (n = nh; n != NULL; n = n->next) {
5641			if (n->addr.type != PF_ADDR_TABLE &&
5642			    n->addr.type != PF_ADDR_DYNIFTL) {
5643				yyerror("address family not given and "
5644				    "translation address expands to multiple "
5645				    "address families");
5646				return (1);
5647			}
5648		}
5649	}
5650	if (nh == NULL) {
5651		yyerror("no translation address with matching address family "
5652		    "found.");
5653		return (1);
5654	}
5655	return (0);
5656}
5657
5658int
5659atoul(char *s, u_long *ulvalp)
5660{
5661	u_long	 ulval;
5662	char	*ep;
5663
5664	errno = 0;
5665	ulval = strtoul(s, &ep, 0);
5666	if (s[0] == '\0' || *ep != '\0')
5667		return (-1);
5668	if (errno == ERANGE && ulval == ULONG_MAX)
5669		return (-1);
5670	*ulvalp = ulval;
5671	return (0);
5672}
5673
5674int
5675getservice(char *n)
5676{
5677	struct servent	*s;
5678	u_long		 ulval;
5679
5680	if (atoul(n, &ulval) == 0) {
5681		if (ulval > 65535) {
5682			yyerror("illegal port value %lu", ulval);
5683			return (-1);
5684		}
5685		return (htons(ulval));
5686	} else {
5687		s = getservbyname(n, "tcp");
5688		if (s == NULL)
5689			s = getservbyname(n, "udp");
5690		if (s == NULL) {
5691			yyerror("unknown port %s", n);
5692			return (-1);
5693		}
5694		return (s->s_port);
5695	}
5696}
5697
5698int
5699rule_label(struct pf_rule *r, char *s)
5700{
5701	if (s) {
5702		if (strlcpy(r->label, s, sizeof(r->label)) >=
5703		    sizeof(r->label)) {
5704			yyerror("rule label too long (max %d chars)",
5705			    sizeof(r->label)-1);
5706			return (-1);
5707		}
5708	}
5709	return (0);
5710}
5711
5712u_int16_t
5713parseicmpspec(char *w, sa_family_t af)
5714{
5715	const struct icmpcodeent	*p;
5716	u_long				 ulval;
5717	u_int8_t			 icmptype;
5718
5719	if (af == AF_INET)
5720		icmptype = returnicmpdefault >> 8;
5721	else
5722		icmptype = returnicmp6default >> 8;
5723
5724	if (atoul(w, &ulval) == -1) {
5725		if ((p = geticmpcodebyname(icmptype, w, af)) == NULL) {
5726			yyerror("unknown icmp code %s", w);
5727			return (0);
5728		}
5729		ulval = p->code;
5730	}
5731	if (ulval > 255) {
5732		yyerror("invalid icmp code %lu", ulval);
5733		return (0);
5734	}
5735	return (icmptype << 8 | ulval);
5736}
5737
5738int
5739parseport(char *port, struct range *r, int extensions)
5740{
5741	char	*p = strchr(port, ':');
5742
5743	if (p == NULL) {
5744		if ((r->a = getservice(port)) == -1)
5745			return (-1);
5746		r->b = 0;
5747		r->t = PF_OP_NONE;
5748		return (0);
5749	}
5750	if ((extensions & PPORT_STAR) && !strcmp(p+1, "*")) {
5751		*p = 0;
5752		if ((r->a = getservice(port)) == -1)
5753			return (-1);
5754		r->b = 0;
5755		r->t = PF_OP_IRG;
5756		return (0);
5757	}
5758	if ((extensions & PPORT_RANGE)) {
5759		*p++ = 0;
5760		if ((r->a = getservice(port)) == -1 ||
5761		    (r->b = getservice(p)) == -1)
5762			return (-1);
5763		if (r->a == r->b) {
5764			r->b = 0;
5765			r->t = PF_OP_NONE;
5766		} else
5767			r->t = PF_OP_RRG;
5768		return (0);
5769	}
5770	return (-1);
5771}
5772
5773int
5774pfctl_load_anchors(int dev, struct pfctl *pf, struct pfr_buffer *trans)
5775{
5776	struct loadanchors	*la;
5777
5778	TAILQ_FOREACH(la, &loadanchorshead, entries) {
5779		if (pf->opts & PF_OPT_VERBOSE)
5780			fprintf(stderr, "\nLoading anchor %s from %s\n",
5781			    la->anchorname, la->filename);
5782		if (pfctl_rules(dev, la->filename, pf->opts, pf->optimize,
5783		    la->anchorname, trans) == -1)
5784			return (-1);
5785	}
5786
5787	return (0);
5788}
5789
5790int
5791kw_casecmp(const void *k, const void *e)
5792{
5793	return (strcasecmp(k, ((const struct keywords *)e)->k_name));
5794}
5795
5796int
5797map_tos(char *s, int *val)
5798{
5799	/* DiffServ Codepoints and other TOS mappings */
5800	const struct keywords	 toswords[] = {
5801		{ "af11",		IPTOS_DSCP_AF11 },
5802		{ "af12",		IPTOS_DSCP_AF12 },
5803		{ "af13",		IPTOS_DSCP_AF13 },
5804		{ "af21",		IPTOS_DSCP_AF21 },
5805		{ "af22",		IPTOS_DSCP_AF22 },
5806		{ "af23",		IPTOS_DSCP_AF23 },
5807		{ "af31",		IPTOS_DSCP_AF31 },
5808		{ "af32",		IPTOS_DSCP_AF32 },
5809		{ "af33",		IPTOS_DSCP_AF33 },
5810		{ "af41",		IPTOS_DSCP_AF41 },
5811		{ "af42",		IPTOS_DSCP_AF42 },
5812		{ "af43",		IPTOS_DSCP_AF43 },
5813		{ "critical",		IPTOS_PREC_CRITIC_ECP },
5814		{ "cs0",		IPTOS_DSCP_CS0 },
5815		{ "cs1",		IPTOS_DSCP_CS1 },
5816		{ "cs2",		IPTOS_DSCP_CS2 },
5817		{ "cs3",		IPTOS_DSCP_CS3 },
5818		{ "cs4",		IPTOS_DSCP_CS4 },
5819		{ "cs5",		IPTOS_DSCP_CS5 },
5820		{ "cs6",		IPTOS_DSCP_CS6 },
5821		{ "cs7",		IPTOS_DSCP_CS7 },
5822		{ "ef",			IPTOS_DSCP_EF },
5823		{ "inetcontrol",	IPTOS_PREC_INTERNETCONTROL },
5824		{ "lowdelay",		IPTOS_LOWDELAY },
5825		{ "netcontrol",		IPTOS_PREC_NETCONTROL },
5826		{ "reliability",	IPTOS_RELIABILITY },
5827		{ "throughput",		IPTOS_THROUGHPUT }
5828	};
5829	const struct keywords	*p;
5830
5831	p = bsearch(s, toswords, sizeof(toswords)/sizeof(toswords[0]),
5832	    sizeof(toswords[0]), kw_casecmp);
5833
5834	if (p) {
5835		*val = p->k_val;
5836		return (1);
5837	}
5838	return (0);
5839}
5840