parse.y revision 1.623 
1/*	$OpenBSD: parse.y,v 1.623 2013/06/01 21:51:54 henning Exp $	*/
2
3/*
4 * Copyright (c) 2001 Markus Friedl.  All rights reserved.
5 * Copyright (c) 2001 Daniel Hartmeier.  All rights reserved.
6 * Copyright (c) 2001 Theo de Raadt.  All rights reserved.
7 * Copyright (c) 2002,2003 Henning Brauer. All rights reserved.
8 *
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
11 * are met:
12 * 1. Redistributions of source code must retain the above copyright
13 *    notice, this list of conditions and the following disclaimer.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 *    notice, this list of conditions and the following disclaimer in the
16 *    documentation and/or other materials provided with the distribution.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
19 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
20 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
21 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
22 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
23 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
24 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
25 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
26 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
27 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28 */
29%{
30#include <sys/types.h>
31#include <sys/socket.h>
32#include <sys/stat.h>
33#include <net/if.h>
34#include <netinet/in.h>
35#include <netinet/in_systm.h>
36#include <netinet/ip.h>
37#include <netinet/ip_icmp.h>
38#include <netinet/icmp6.h>
39#include <net/pfvar.h>
40#include <arpa/inet.h>
41#include <altq/altq.h>
42#include <altq/altq_cbq.h>
43#include <altq/altq_priq.h>
44#include <altq/altq_hfsc.h>
45
46#include <stdio.h>
47#include <unistd.h>
48#include <stdlib.h>
49#include <netdb.h>
50#include <stdarg.h>
51#include <errno.h>
52#include <string.h>
53#include <ctype.h>
54#include <math.h>
55#include <err.h>
56#include <limits.h>
57#include <pwd.h>
58#include <grp.h>
59#include <md5.h>
60
61#include "pfctl_parser.h"
62#include "pfctl.h"
63
64static struct pfctl	*pf = NULL;
65static int		 debug = 0;
66static u_int16_t	 returnicmpdefault =
67			    (ICMP_UNREACH << 8) | ICMP_UNREACH_PORT;
68static u_int16_t	 returnicmp6default =
69			    (ICMP6_DST_UNREACH << 8) | ICMP6_DST_UNREACH_NOPORT;
70static int		 blockpolicy = PFRULE_DROP;
71static int		 default_statelock;
72
73TAILQ_HEAD(files, file)		 files = TAILQ_HEAD_INITIALIZER(files);
74static struct file {
75	TAILQ_ENTRY(file)	 entry;
76	FILE			*stream;
77	char			*name;
78	int			 lineno;
79	int			 errors;
80} *file;
81struct file	*pushfile(const char *, int);
82int		 popfile(void);
83int		 check_file_secrecy(int, const char *);
84int		 yyparse(void);
85int		 yylex(void);
86int		 yyerror(const char *, ...);
87int		 kw_cmp(const void *, const void *);
88int		 lookup(char *);
89int		 lgetc(int);
90int		 lungetc(int);
91int		 findeol(void);
92
93TAILQ_HEAD(symhead, sym)	 symhead = TAILQ_HEAD_INITIALIZER(symhead);
94struct sym {
95	TAILQ_ENTRY(sym)	 entry;
96	int			 used;
97	int			 persist;
98	char			*nam;
99	char			*val;
100};
101int		 symset(const char *, const char *, int);
102char		*symget(const char *);
103
104int		 atoul(char *, u_long *);
105
106struct node_proto {
107	u_int8_t		 proto;
108	struct node_proto	*next;
109	struct node_proto	*tail;
110};
111
112struct node_port {
113	u_int16_t		 port[2];
114	u_int8_t		 op;
115	struct node_port	*next;
116	struct node_port	*tail;
117};
118
119struct node_uid {
120	uid_t			 uid[2];
121	u_int8_t		 op;
122	struct node_uid		*next;
123	struct node_uid		*tail;
124};
125
126struct node_gid {
127	gid_t			 gid[2];
128	u_int8_t		 op;
129	struct node_gid		*next;
130	struct node_gid		*tail;
131};
132
133struct node_icmp {
134	u_int8_t		 code;
135	u_int8_t		 type;
136	u_int8_t		 proto;
137	struct node_icmp	*next;
138	struct node_icmp	*tail;
139};
140
141enum	{ PF_STATE_OPT_MAX, PF_STATE_OPT_NOSYNC, PF_STATE_OPT_SRCTRACK,
142	    PF_STATE_OPT_MAX_SRC_STATES, PF_STATE_OPT_MAX_SRC_CONN,
143	    PF_STATE_OPT_MAX_SRC_CONN_RATE, PF_STATE_OPT_MAX_SRC_NODES,
144	    PF_STATE_OPT_OVERLOAD, PF_STATE_OPT_STATELOCK,
145	    PF_STATE_OPT_TIMEOUT, PF_STATE_OPT_SLOPPY,
146	    PF_STATE_OPT_PFLOW };
147
148enum	{ PF_SRCTRACK_NONE, PF_SRCTRACK, PF_SRCTRACK_GLOBAL, PF_SRCTRACK_RULE };
149
150struct node_state_opt {
151	int			 type;
152	union {
153		u_int32_t	 max_states;
154		u_int32_t	 max_src_states;
155		u_int32_t	 max_src_conn;
156		struct {
157			u_int32_t	limit;
158			u_int32_t	seconds;
159		}		 max_src_conn_rate;
160		struct {
161			u_int8_t	flush;
162			char		tblname[PF_TABLE_NAME_SIZE];
163		}		 overload;
164		u_int32_t	 max_src_nodes;
165		u_int8_t	 src_track;
166		u_int32_t	 statelock;
167		struct {
168			int		number;
169			u_int32_t	seconds;
170		}		 timeout;
171	}			 data;
172	struct node_state_opt	*next;
173	struct node_state_opt	*tail;
174};
175
176struct peer {
177	struct node_host	*host;
178	struct node_port	*port;
179};
180
181struct node_queue {
182	char			 queue[PF_QNAME_SIZE];
183	char			 parent[PF_QNAME_SIZE];
184	char			 ifname[IFNAMSIZ];
185	int			 scheduler;
186	struct node_queue	*next;
187	struct node_queue	*tail;
188}	*queues = NULL;
189
190struct node_qassign {
191	char		*qname;
192	char		*pqname;
193};
194
195struct range {
196	int		 a;
197	int		 b;
198	int		 t;
199};
200struct redirection {
201	struct node_host	*host;
202	struct range		 rport;
203};
204
205struct pool_opts {
206	int			 marker;
207#define POM_TYPE		0x01
208#define POM_STICKYADDRESS	0x02
209	u_int8_t		 opts;
210	int			 type;
211	int			 staticport;
212	struct pf_poolhashkey	*key;
213
214} pool_opts;
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	struct node_uid		*uid;
238	struct node_gid		*gid;
239	struct node_if		*rcv;
240	struct {
241		u_int8_t	 b1;
242		u_int8_t	 b2;
243		u_int16_t	 w;
244		u_int16_t	 w2;
245	} flags;
246	struct node_icmp	*icmpspec;
247	u_int32_t		 tos;
248	u_int32_t		 prob;
249	struct {
250		int			 action;
251		struct node_state_opt	*options;
252	} keep;
253	int			 fragment;
254	int			 allowopts;
255	char			*label;
256	struct node_qassign	 queues;
257	char			*tag;
258	char			*match_tag;
259	u_int8_t		 match_tag_not;
260	u_int			 rtableid;
261	u_int8_t		 set_prio[2];
262	struct {
263		struct node_host	*addr;
264		u_int16_t		port;
265	}			 divert, 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 queue_opts {
303	int			marker;
304#define QOM_BWSPEC	0x01
305#define QOM_SCHEDULER	0x02
306#define QOM_PRIORITY	0x04
307#define QOM_TBRSIZE	0x08
308#define QOM_QLIMIT	0x10
309	struct node_queue_bw	queue_bwspec;
310	struct node_queue_opt	scheduler;
311	int			priority;
312	int			tbrsize;
313	int			qlimit;
314} queue_opts;
315
316struct table_opts {
317	int			flags;
318	int			init_addr;
319	struct node_tinithead	init_nodes;
320} table_opts;
321
322struct node_hfsc_opts	 hfsc_opts;
323struct node_state_opt	*keep_state_defaults = NULL;
324
325int		 disallow_table(struct node_host *, const char *);
326int		 disallow_urpf_failed(struct node_host *, const char *);
327int		 disallow_alias(struct node_host *, const char *);
328int		 rule_consistent(struct pf_rule *, int);
329int		 process_tabledef(char *, struct table_opts *);
330void		 expand_label_str(char *, size_t, const char *, const char *);
331void		 expand_label_if(const char *, char *, size_t, const char *);
332void		 expand_label_addr(const char *, char *, size_t, u_int8_t,
333		    struct node_host *);
334void		 expand_label_port(const char *, char *, size_t,
335		    struct node_port *);
336void		 expand_label_proto(const char *, char *, size_t, u_int8_t);
337void		 expand_label_nr(const char *, char *, size_t);
338void		 expand_label(char *, size_t, const char *, u_int8_t,
339		    struct node_host *, struct node_port *, struct node_host *,
340		    struct node_port *, u_int8_t);
341int		 collapse_redirspec(struct pf_pool *, struct pf_rule *,
342		    struct redirspec *rs, u_int8_t);
343int		 apply_redirspec(struct pf_pool *, struct pf_rule *,
344		    struct redirspec *, int, struct node_port *);
345void		 expand_rule(struct pf_rule *, int, struct node_if *,
346		    struct redirspec *, struct redirspec *, struct redirspec *,
347		    struct node_proto *,
348		    struct node_os *, struct node_host *, struct node_port *,
349		    struct node_host *, struct node_port *, struct node_uid *,
350		    struct node_gid *, struct node_if *, struct node_icmp *,
351		    const char *);
352int		 expand_altq(struct pf_altq *, struct node_if *,
353		    struct node_queue *, struct node_queue_bw bwspec,
354		    struct node_queue_opt *);
355int		 expand_queue(struct pf_altq *, struct node_if *,
356		    struct node_queue *, struct node_queue_bw,
357		    struct node_queue_opt *);
358int		 expand_skip_interface(struct node_if *);
359
360int	 getservice(char *);
361int	 rule_label(struct pf_rule *, char *);
362
363void	 mv_rules(struct pf_ruleset *, struct pf_ruleset *);
364void	 decide_address_family(struct node_host *, sa_family_t *);
365int	 invalid_redirect(struct node_host *, sa_family_t);
366u_int16_t parseicmpspec(char *, sa_family_t);
367int	 kw_casecmp(const void *, const void *);
368int	 map_tos(char *string, int *);
369
370TAILQ_HEAD(loadanchorshead, loadanchors)
371    loadanchorshead = TAILQ_HEAD_INITIALIZER(loadanchorshead);
372
373struct loadanchors {
374	TAILQ_ENTRY(loadanchors)	 entries;
375	char				*anchorname;
376	char				*filename;
377};
378
379typedef struct {
380	union {
381		int64_t			 number;
382		double			 probability;
383		int			 i;
384		char			*string;
385		u_int			 rtableid;
386		u_int16_t		 weight;
387		struct {
388			u_int8_t	 b1;
389			u_int8_t	 b2;
390			u_int16_t	 w;
391			u_int16_t	 w2;
392		}			 b;
393		struct range		 range;
394		struct node_if		*interface;
395		struct node_proto	*proto;
396		struct node_icmp	*icmp;
397		struct node_host	*host;
398		struct node_os		*os;
399		struct node_port	*port;
400		struct node_uid		*uid;
401		struct node_gid		*gid;
402		struct node_state_opt	*state_opt;
403		struct peer		 peer;
404		struct {
405			struct peer	 src, dst;
406			struct node_os	*src_os;
407		}			 fromto;
408		struct redirection	*redirection;
409		struct {
410			int			 action;
411			struct node_state_opt	*options;
412		}			 keep_state;
413		struct {
414			u_int8_t	 log;
415			u_int8_t	 logif;
416			u_int8_t	 quick;
417		}			 logquick;
418		struct {
419			int		 neg;
420			char		*name;
421		}			 tagged;
422		struct pf_poolhashkey	*hashkey;
423		struct node_queue	*queue;
424		struct node_queue_opt	 queue_options;
425		struct node_queue_bw	 queue_bwspec;
426		struct node_qassign	 qassign;
427		struct filter_opts	 filter_opts;
428		struct antispoof_opts	 antispoof_opts;
429		struct queue_opts	 queue_opts;
430		struct scrub_opts	 scrub_opts;
431		struct table_opts	 table_opts;
432		struct pool_opts	 pool_opts;
433		struct node_hfsc_opts	 hfsc_opts;
434	} v;
435	int lineno;
436} YYSTYPE;
437
438#define PPORT_RANGE	1
439#define PPORT_STAR	2
440int	parseport(char *, struct range *r, int);
441
442#define DYNIF_MULTIADDR(addr) ((addr).type == PF_ADDR_DYNIFTL && \
443	(!((addr).iflags & PFI_AFLAG_NOALIAS) ||		 \
444	!isdigit((addr).v.ifname[strlen((addr).v.ifname)-1])))
445
446%}
447
448%token	PASS BLOCK MATCH SCRUB RETURN IN OS OUT LOG QUICK ON FROM TO FLAGS
449%token	RETURNRST RETURNICMP RETURNICMP6 PROTO INET INET6 ALL ANY ICMPTYPE
450%token	ICMP6TYPE CODE KEEP MODULATE STATE PORT BINATTO NODF
451%token	MINTTL ERROR ALLOWOPTS FILENAME ROUTETO DUPTO REPLYTO NO LABEL
452%token	NOROUTE URPFFAILED FRAGMENT USER GROUP MAXMSS MAXIMUM TTL TOS DROP TABLE
453%token	REASSEMBLE ANCHOR
454%token	SET OPTIMIZATION TIMEOUT LIMIT LOGINTERFACE BLOCKPOLICY RANDOMID
455%token	SYNPROXY FINGERPRINTS NOSYNC DEBUG SKIP HOSTID
456%token	ANTISPOOF FOR INCLUDE MATCHES
457%token	BITMASK RANDOM SOURCEHASH ROUNDROBIN LEASTSTATES STATICPORT PROBABILITY
458%token	WEIGHT
459%token	ALTQ CBQ PRIQ HFSC BANDWIDTH TBRSIZE LINKSHARE REALTIME UPPERLIMIT
460%token	QUEUE PRIORITY QLIMIT RTABLE RDOMAIN
461%token	LOAD RULESET_OPTIMIZATION RTABLE RDOMAIN PRIO ONCE
462%token	STICKYADDRESS MAXSRCSTATES MAXSRCNODES SOURCETRACK GLOBAL RULE
463%token	MAXSRCCONN MAXSRCCONNRATE OVERLOAD FLUSH SLOPPY PFLOW
464%token	TAGGED TAG IFBOUND FLOATING STATEPOLICY STATEDEFAULTS ROUTE
465%token	DIVERTTO DIVERTREPLY DIVERTPACKET NATTO AFTO RDRTO RECEIVEDON NE LE GE
466%token	<v.string>		STRING
467%token	<v.number>		NUMBER
468%token	<v.i>			PORTBINARY
469%type	<v.interface>		interface if_list if_item_not if_item
470%type	<v.number>		number icmptype icmp6type uid gid
471%type	<v.number>		tos not yesno optnodf
472%type	<v.probability>		probability
473%type	<v.weight>		optweight
474%type	<v.i>			dir af optimizer
475%type	<v.i>			sourcetrack flush unaryop statelock
476%type	<v.b>			action
477%type	<v.b>			flags flag blockspec prio
478%type	<v.range>		portplain portstar portrange
479%type	<v.hashkey>		hashkey
480%type	<v.proto>		proto proto_list proto_item
481%type	<v.number>		protoval
482%type	<v.icmp>		icmpspec
483%type	<v.icmp>		icmp_list icmp_item
484%type	<v.icmp>		icmp6_list icmp6_item
485%type	<v.number>		reticmpspec reticmp6spec
486%type	<v.fromto>		fromto
487%type	<v.peer>		ipportspec from to
488%type	<v.host>		ipspec xhost host dynaddr host_list
489%type	<v.host>		table_host_list tablespec
490%type	<v.host>		redir_host_list redirspec
491%type	<v.host>		route_host route_host_list routespec
492%type	<v.os>			os xos os_list
493%type	<v.port>		portspec port_list port_item
494%type	<v.uid>			uids uid_list uid_item
495%type	<v.gid>			gids gid_list gid_item
496%type	<v.redirection>		redirpool
497%type	<v.string>		label stringall anchorname
498%type	<v.string>		string varstring numberstring
499%type	<v.keep_state>		keep
500%type	<v.state_opt>		state_opt_spec state_opt_list state_opt_item
501%type	<v.logquick>		logquick quick log logopts logopt
502%type	<v.interface>		antispoof_ifspc antispoof_iflst antispoof_if
503%type	<v.qassign>		qname
504%type	<v.queue>		qassign qassign_list qassign_item
505%type	<v.queue_options>	scheduler
506%type	<v.number>		cbqflags_list cbqflags_item
507%type	<v.number>		priqflags_list priqflags_item
508%type	<v.hfsc_opts>		hfscopts_list hfscopts_item hfsc_opts
509%type	<v.queue_bwspec>	bandwidth
510%type	<v.filter_opts>		filter_opts filter_opt filter_opts_l
511%type	<v.filter_opts>		filter_sets filter_set filter_sets_l
512%type	<v.antispoof_opts>	antispoof_opts antispoof_opt antispoof_opts_l
513%type	<v.queue_opts>		queue_opts queue_opt queue_opts_l
514%type	<v.scrub_opts>		scrub_opts scrub_opt scrub_opts_l
515%type	<v.table_opts>		table_opts table_opt table_opts_l
516%type	<v.pool_opts>		pool_opts pool_opt pool_opts_l
517%%
518
519ruleset		: /* empty */
520		| ruleset include '\n'
521		| ruleset '\n'
522		| ruleset option '\n'
523		| ruleset pfrule '\n'
524		| ruleset anchorrule '\n'
525		| ruleset loadrule '\n'
526		| ruleset altqif '\n'
527		| ruleset queuespec '\n'
528		| ruleset varset '\n'
529		| ruleset antispoof '\n'
530		| ruleset tabledef '\n'
531		| '{' fakeanchor '}' '\n';
532		| ruleset error '\n'		{ file->errors++; }
533		;
534
535include		: INCLUDE STRING		{
536			struct file	*nfile;
537
538			if ((nfile = pushfile($2, 0)) == NULL) {
539				yyerror("failed to include file %s", $2);
540				free($2);
541				YYERROR;
542			}
543			free($2);
544
545			file = nfile;
546			lungetc('\n');
547		}
548		;
549
550/*
551 * apply to previously specified rule: must be careful to note
552 * what that is: pf or nat or binat or rdr
553 */
554fakeanchor	: fakeanchor '\n'
555		| fakeanchor anchorrule '\n'
556		| fakeanchor pfrule '\n'
557		| fakeanchor error '\n'
558		;
559
560optimizer	: string	{
561			if (!strcmp($1, "none"))
562				$$ = 0;
563			else if (!strcmp($1, "basic"))
564				$$ = PF_OPTIMIZE_BASIC;
565			else if (!strcmp($1, "profile"))
566				$$ = PF_OPTIMIZE_BASIC | PF_OPTIMIZE_PROFILE;
567			else {
568				yyerror("unknown ruleset-optimization %s", $1);
569				YYERROR;
570			}
571		}
572		;
573
574optnodf		: /* empty */	{ $$ = 0; }
575		| NODF		{ $$ = 1; }
576		;
577
578option		: SET REASSEMBLE yesno optnodf		{
579			pfctl_set_reassembly(pf, $3, $4);
580		}
581		| SET OPTIMIZATION STRING		{
582			if (pfctl_set_optimization(pf, $3) != 0) {
583				yyerror("unknown optimization %s", $3);
584				free($3);
585				YYERROR;
586			}
587			free($3);
588		}
589		| SET RULESET_OPTIMIZATION optimizer {
590			if (!(pf->opts & PF_OPT_OPTIMIZE)) {
591				pf->opts |= PF_OPT_OPTIMIZE;
592				pf->optimize = $3;
593			}
594		}
595		| SET TIMEOUT timeout_spec
596		| SET TIMEOUT '{' optnl timeout_list '}'
597		| SET LIMIT limit_spec
598		| SET LIMIT '{' optnl limit_list '}'
599		| SET LOGINTERFACE stringall		{
600			if (pfctl_set_logif(pf, $3) != 0) {
601				yyerror("error setting loginterface %s", $3);
602				free($3);
603				YYERROR;
604			}
605			free($3);
606		}
607		| SET HOSTID number {
608			if ($3 == 0 || $3 > UINT_MAX) {
609				yyerror("hostid must be non-zero");
610				YYERROR;
611			}
612			pfctl_set_hostid(pf, $3);
613		}
614		| SET BLOCKPOLICY DROP	{
615			if (pf->opts & PF_OPT_VERBOSE)
616				printf("set block-policy drop\n");
617			blockpolicy = PFRULE_DROP;
618		}
619		| SET BLOCKPOLICY RETURN {
620			if (pf->opts & PF_OPT_VERBOSE)
621				printf("set block-policy return\n");
622			blockpolicy = PFRULE_RETURN;
623		}
624		| SET FINGERPRINTS STRING {
625			if (pf->opts & PF_OPT_VERBOSE)
626				printf("set fingerprints \"%s\"\n", $3);
627			if (!pf->anchor->name[0]) {
628				if (pfctl_file_fingerprints(pf->dev,
629				    pf->opts, $3)) {
630					yyerror("error loading "
631					    "fingerprints %s", $3);
632					free($3);
633					YYERROR;
634				}
635			}
636			free($3);
637		}
638		| SET STATEPOLICY statelock {
639			if (pf->opts & PF_OPT_VERBOSE)
640				switch ($3) {
641				case 0:
642					printf("set state-policy floating\n");
643					break;
644				case PFRULE_IFBOUND:
645					printf("set state-policy if-bound\n");
646					break;
647				}
648			default_statelock = $3;
649		}
650		| SET DEBUG STRING {
651			if (pfctl_set_debug(pf, $3) != 0) {
652				yyerror("error setting debuglevel %s", $3);
653				free($3);
654				YYERROR;
655			}
656			free($3);
657		}
658		| SET DEBUG DEBUG {
659			if (pfctl_set_debug(pf, "debug") != 0) {
660				yyerror("error setting debuglevel debug");
661				YYERROR;
662			}
663		}
664		| SET SKIP interface {
665			if (expand_skip_interface($3) != 0) {
666				yyerror("error setting skip interface(s)");
667				YYERROR;
668			}
669		}
670		| SET STATEDEFAULTS state_opt_list {
671			if (keep_state_defaults != NULL) {
672				yyerror("cannot redefine state-defaults");
673				YYERROR;
674			}
675			keep_state_defaults = $3;
676		}
677		;
678
679stringall	: STRING	{ $$ = $1; }
680		| ALL		{
681			if (($$ = strdup("all")) == NULL) {
682				err(1, "stringall: strdup");
683			}
684		}
685		;
686
687string		: STRING string				{
688			if (asprintf(&$$, "%s %s", $1, $2) == -1)
689				err(1, "string: asprintf");
690			free($1);
691			free($2);
692		}
693		| STRING
694		;
695
696varstring	: numberstring varstring 		{
697			if (asprintf(&$$, "%s %s", $1, $2) == -1)
698				err(1, "string: asprintf");
699			free($1);
700			free($2);
701		}
702		| numberstring
703		;
704
705numberstring	: NUMBER				{
706			char	*s;
707			if (asprintf(&s, "%lld", $1) == -1) {
708				yyerror("string: asprintf");
709				YYERROR;
710			}
711			$$ = s;
712		}
713		| STRING
714		;
715
716varset		: STRING '=' varstring	{
717			if (pf->opts & PF_OPT_VERBOSE)
718				printf("%s = \"%s\"\n", $1, $3);
719			if (symset($1, $3, 0) == -1)
720				err(1, "cannot store variable %s", $1);
721			free($1);
722			free($3);
723		}
724		;
725
726anchorname	: STRING			{ $$ = $1; }
727		| /* empty */			{ $$ = NULL; }
728		;
729
730pfa_anchorlist	: /* empty */
731		| pfa_anchorlist '\n'
732		| pfa_anchorlist pfrule '\n'
733		| pfa_anchorlist anchorrule '\n'
734		;
735
736pfa_anchor	: '{'
737		{
738			char ta[PF_ANCHOR_NAME_SIZE];
739			struct pf_ruleset *rs;
740
741			/* steping into a brace anchor */
742			pf->asd++;
743			pf->bn++;
744			pf->brace = 1;
745
746			/*
747			 * Anchor contents are parsed before the anchor rule
748			 * production completes, so we don't know the real
749			 * location yet. Create a holding ruleset in the root;
750			 * contents will be moved afterwards.
751			 */
752			snprintf(ta, PF_ANCHOR_NAME_SIZE, "_%d", pf->bn);
753			rs = pf_find_or_create_ruleset(ta);
754			if (rs == NULL)
755				err(1, "pfa_anchor: pf_find_or_create_ruleset");
756			pf->astack[pf->asd] = rs->anchor;
757			pf->anchor = rs->anchor;
758		} '\n' pfa_anchorlist '}'
759		{
760			pf->alast = pf->anchor;
761			pf->asd--;
762			pf->anchor = pf->astack[pf->asd];
763		}
764		| /* empty */
765		;
766
767anchorrule	: ANCHOR anchorname dir quick interface af proto fromto
768		    filter_opts pfa_anchor
769		{
770			struct pf_rule	r;
771			struct node_proto	*proto;
772
773			if ($2 && ($2[0] == '_' || strstr($2, "/_") != NULL)) {
774				free($2);
775				yyerror("anchor names beginning with '_' "
776				    "are reserved for internal use");
777				YYERROR;
778			}
779
780			memset(&r, 0, sizeof(r));
781			if (pf->astack[pf->asd + 1]) {
782				if ($2 && strchr($2, '/') != NULL) {
783					free($2);
784					yyerror("anchor paths containing '/' "
785				    	    "cannot be used for inline anchors.");
786					YYERROR;
787				}
788
789				/* Move inline rules into relative location. */
790				pf_anchor_setup(&r,
791				    &pf->astack[pf->asd]->ruleset,
792				    $2 ? $2 : pf->alast->name);
793
794				if (r.anchor == NULL)
795					err(1, "anchorrule: unable to "
796					    "create ruleset");
797
798				if (pf->alast != r.anchor) {
799					if (r.anchor->match) {
800						yyerror("inline anchor '%s' "
801						    "already exists",
802						    r.anchor->name);
803						YYERROR;
804					}
805					mv_rules(&pf->alast->ruleset,
806					    &r.anchor->ruleset);
807				}
808				pf_remove_if_empty_ruleset(&pf->alast->ruleset);
809				pf->alast = r.anchor;
810			} else {
811				if (!$2) {
812					yyerror("anchors without explicit "
813					    "rules must specify a name");
814					YYERROR;
815				}
816			}
817			r.direction = $3;
818			r.quick = $4.quick;
819			r.af = $6;
820			r.prob = $9.prob;
821			r.rtableid = $9.rtableid;
822
823			if ($9.tag)
824				if (strlcpy(r.tagname, $9.tag,
825				    PF_TAG_NAME_SIZE) >= PF_TAG_NAME_SIZE) {
826					yyerror("tag too long, max %u chars",
827					    PF_TAG_NAME_SIZE - 1);
828					YYERROR;
829				}
830			if ($9.match_tag)
831				if (strlcpy(r.match_tagname, $9.match_tag,
832				    PF_TAG_NAME_SIZE) >= PF_TAG_NAME_SIZE) {
833					yyerror("tag too long, max %u chars",
834					    PF_TAG_NAME_SIZE - 1);
835					YYERROR;
836				}
837			r.match_tag_not = $9.match_tag_not;
838			if (rule_label(&r, $9.label))
839				YYERROR;
840			free($9.label);
841			r.flags = $9.flags.b1;
842			r.flagset = $9.flags.b2;
843			if (($9.flags.b1 & $9.flags.b2) != $9.flags.b1) {
844				yyerror("flags always false");
845				YYERROR;
846			}
847			if ($9.flags.b1 || $9.flags.b2 || $8.src_os) {
848				for (proto = $7; proto != NULL &&
849				    proto->proto != IPPROTO_TCP;
850				    proto = proto->next)
851					;	/* nothing */
852				if (proto == NULL && $7 != NULL) {
853					if ($9.flags.b1 || $9.flags.b2)
854						yyerror(
855						    "flags only apply to tcp");
856					if ($8.src_os)
857						yyerror(
858						    "OS fingerprinting only "
859						    "applies to tcp");
860					YYERROR;
861				}
862			}
863
864			r.tos = $9.tos;
865
866			if ($9.keep.action) {
867				yyerror("cannot specify state handling "
868				    "on anchors");
869				YYERROR;
870			}
871
872			if ($9.route.rt) {
873				yyerror("cannot specify route handling "
874				    "on anchors");
875				YYERROR;
876			}
877
878			if ($9.marker & FOM_ONCE) {
879				yyerror("cannot specify 'once' "
880				    "on anchors");
881				YYERROR;
882			}
883
884			if ($9.match_tag)
885				if (strlcpy(r.match_tagname, $9.match_tag,
886				    PF_TAG_NAME_SIZE) >= PF_TAG_NAME_SIZE) {
887					yyerror("tag too long, max %u chars",
888					    PF_TAG_NAME_SIZE - 1);
889					YYERROR;
890				}
891			r.match_tag_not = $9.match_tag_not;
892			if ($9.marker & FOM_SETPRIO) {
893				r.set_prio[0] = $9.set_prio[0];
894				r.set_prio[1] = $9.set_prio[1];
895				r.scrub_flags |= PFSTATE_SETPRIO;
896			}
897
898			decide_address_family($8.src.host, &r.af);
899			decide_address_family($8.dst.host, &r.af);
900
901			expand_rule(&r, 0, $5, NULL, NULL, NULL, $7, $8.src_os,
902			    $8.src.host, $8.src.port, $8.dst.host, $8.dst.port,
903			    $9.uid, $9.gid, $9.rcv, $9.icmpspec,
904			    pf->astack[pf->asd + 1] ? pf->alast->name : $2);
905			free($2);
906			pf->astack[pf->asd + 1] = NULL;
907		}
908		;
909
910loadrule	: LOAD ANCHOR string FROM string	{
911			struct loadanchors	*loadanchor;
912
913			if (strlen(pf->anchor->name) + 1 +
914			    strlen($3) >= MAXPATHLEN) {
915				yyerror("anchorname %s too long, max %u\n",
916				    $3, MAXPATHLEN - 1);
917				free($3);
918				YYERROR;
919			}
920			loadanchor = calloc(1, sizeof(struct loadanchors));
921			if (loadanchor == NULL)
922				err(1, "loadrule: calloc");
923			if ((loadanchor->anchorname = malloc(MAXPATHLEN)) ==
924			    NULL)
925				err(1, "loadrule: malloc");
926			if (pf->anchor->name[0])
927				snprintf(loadanchor->anchorname, MAXPATHLEN,
928				    "%s/%s", pf->anchor->name, $3);
929			else
930				strlcpy(loadanchor->anchorname, $3, MAXPATHLEN);
931			if ((loadanchor->filename = strdup($5)) == NULL)
932				err(1, "loadrule: strdup");
933
934			TAILQ_INSERT_TAIL(&loadanchorshead, loadanchor,
935			    entries);
936
937			free($3);
938			free($5);
939		};
940
941scrub_opts	:	{
942				bzero(&scrub_opts, sizeof scrub_opts);
943			}
944		    scrub_opts_l
945			{ $$ = scrub_opts; }
946		;
947
948scrub_opts_l	: scrub_opts_l comma scrub_opt
949		| scrub_opt
950		;
951
952scrub_opt	: NODF	{
953			if (scrub_opts.nodf) {
954				yyerror("no-df cannot be respecified");
955				YYERROR;
956			}
957			scrub_opts.nodf = 1;
958		}
959		| MINTTL NUMBER {
960			if (scrub_opts.marker & FOM_MINTTL) {
961				yyerror("min-ttl cannot be respecified");
962				YYERROR;
963			}
964			if ($2 < 0 || $2 > 255) {
965				yyerror("illegal min-ttl value %d", $2);
966				YYERROR;
967			}
968			scrub_opts.marker |= FOM_MINTTL;
969			scrub_opts.minttl = $2;
970		}
971		| MAXMSS NUMBER {
972			if (scrub_opts.marker & FOM_MAXMSS) {
973				yyerror("max-mss cannot be respecified");
974				YYERROR;
975			}
976			if ($2 < 0 || $2 > 65535) {
977				yyerror("illegal max-mss value %d", $2);
978				YYERROR;
979			}
980			scrub_opts.marker |= FOM_MAXMSS;
981			scrub_opts.maxmss = $2;
982		}
983		| REASSEMBLE STRING {
984			if (strcasecmp($2, "tcp") != 0) {
985				yyerror("scrub reassemble supports only tcp, "
986				    "not '%s'", $2);
987				free($2);
988				YYERROR;
989			}
990			free($2);
991			if (scrub_opts.reassemble_tcp) {
992				yyerror("reassemble tcp cannot be respecified");
993				YYERROR;
994			}
995			scrub_opts.reassemble_tcp = 1;
996		}
997		| RANDOMID {
998			if (scrub_opts.randomid) {
999				yyerror("random-id cannot be respecified");
1000				YYERROR;
1001			}
1002			scrub_opts.randomid = 1;
1003		}
1004		;
1005
1006antispoof	: ANTISPOOF logquick antispoof_ifspc af antispoof_opts {
1007			struct pf_rule		 r;
1008			struct node_host	*h = NULL, *hh;
1009			struct node_if		*i, *j;
1010
1011			for (i = $3; i; i = i->next) {
1012				bzero(&r, sizeof(r));
1013
1014				r.action = PF_DROP;
1015				r.direction = PF_IN;
1016				r.log = $2.log;
1017				r.logif = $2.logif;
1018				r.quick = $2.quick;
1019				r.af = $4;
1020				if (rule_label(&r, $5.label))
1021					YYERROR;
1022				r.rtableid = $5.rtableid;
1023				j = calloc(1, sizeof(struct node_if));
1024				if (j == NULL)
1025					err(1, "antispoof: calloc");
1026				if (strlcpy(j->ifname, i->ifname,
1027				    sizeof(j->ifname)) >= sizeof(j->ifname)) {
1028					free(j);
1029					yyerror("interface name too long");
1030					YYERROR;
1031				}
1032				j->not = 1;
1033				if (i->dynamic) {
1034					h = calloc(1, sizeof(*h));
1035					if (h == NULL)
1036						err(1, "address: calloc");
1037					h->addr.type = PF_ADDR_DYNIFTL;
1038					set_ipmask(h, 128);
1039					if (strlcpy(h->addr.v.ifname, i->ifname,
1040					    sizeof(h->addr.v.ifname)) >=
1041					    sizeof(h->addr.v.ifname)) {
1042						free(h);
1043						yyerror(
1044						    "interface name too long");
1045						YYERROR;
1046					}
1047					hh = malloc(sizeof(*hh));
1048					if (hh == NULL)
1049						 err(1, "address: malloc");
1050					bcopy(h, hh, sizeof(*hh));
1051					h->addr.iflags = PFI_AFLAG_NETWORK;
1052				} else {
1053					h = ifa_lookup(j->ifname,
1054					    PFI_AFLAG_NETWORK);
1055					hh = NULL;
1056				}
1057
1058				if (h != NULL)
1059					expand_rule(&r, 0, j, NULL, NULL, NULL,
1060					    NULL, NULL, h, NULL, NULL, NULL,
1061					    NULL, NULL, NULL, NULL, "");
1062
1063				if ((i->ifa_flags & IFF_LOOPBACK) == 0) {
1064					bzero(&r, sizeof(r));
1065
1066					r.action = PF_DROP;
1067					r.direction = PF_IN;
1068					r.log = $2.log;
1069					r.logif = $2.logif;
1070					r.quick = $2.quick;
1071					r.af = $4;
1072					if (rule_label(&r, $5.label))
1073						YYERROR;
1074					r.rtableid = $5.rtableid;
1075					if (hh != NULL)
1076						h = hh;
1077					else
1078						h = ifa_lookup(i->ifname, 0);
1079					if (h != NULL)
1080						expand_rule(&r, 0, NULL, NULL,
1081						    NULL, NULL, NULL, NULL, h,
1082						    NULL, NULL, NULL, NULL,
1083						    NULL, NULL, NULL, "");
1084				} else
1085					free(hh);
1086			}
1087			free($5.label);
1088		}
1089		;
1090
1091antispoof_ifspc	: FOR antispoof_if			{ $$ = $2; }
1092		| FOR '{' optnl antispoof_iflst '}'	{ $$ = $4; }
1093		;
1094
1095antispoof_iflst	: antispoof_if optnl			{ $$ = $1; }
1096		| antispoof_iflst comma antispoof_if optnl {
1097			$1->tail->next = $3;
1098			$1->tail = $3;
1099			$$ = $1;
1100		}
1101		;
1102
1103antispoof_if	: if_item				{ $$ = $1; }
1104		| '(' if_item ')'			{
1105			$2->dynamic = 1;
1106			$$ = $2;
1107		}
1108		;
1109
1110antispoof_opts	:	{
1111				bzero(&antispoof_opts, sizeof antispoof_opts);
1112				antispoof_opts.rtableid = -1;
1113			}
1114		    antispoof_opts_l
1115			{ $$ = antispoof_opts; }
1116		| /* empty */	{
1117			bzero(&antispoof_opts, sizeof antispoof_opts);
1118			antispoof_opts.rtableid = -1;
1119			$$ = antispoof_opts;
1120		}
1121		;
1122
1123antispoof_opts_l	: antispoof_opts_l antispoof_opt
1124			| antispoof_opt
1125			;
1126
1127antispoof_opt	: LABEL label	{
1128			if (antispoof_opts.label) {
1129				yyerror("label cannot be redefined");
1130				YYERROR;
1131			}
1132			antispoof_opts.label = $2;
1133		}
1134		| RTABLE NUMBER				{
1135			if ($2 < 0 || $2 > RT_TABLEID_MAX) {
1136				yyerror("invalid rtable id");
1137				YYERROR;
1138			}
1139			antispoof_opts.rtableid = $2;
1140		}
1141		;
1142
1143not		: '!'		{ $$ = 1; }
1144		| /* empty */	{ $$ = 0; }
1145		;
1146
1147tabledef	: TABLE '<' STRING '>' table_opts {
1148			struct node_host	 *h, *nh;
1149			struct node_tinit	 *ti, *nti;
1150
1151			if (strlen($3) >= PF_TABLE_NAME_SIZE) {
1152				yyerror("table name too long, max %d chars",
1153				    PF_TABLE_NAME_SIZE - 1);
1154				free($3);
1155				YYERROR;
1156			}
1157			if (process_tabledef($3, &$5)) {
1158				free($3);
1159				YYERROR;
1160			}
1161			free($3);
1162			for (ti = SIMPLEQ_FIRST(&$5.init_nodes);
1163			    ti != SIMPLEQ_END(&$5.init_nodes); ti = nti) {
1164				if (ti->file)
1165					free(ti->file);
1166				for (h = ti->host; h != NULL; h = nh) {
1167					nh = h->next;
1168					free(h);
1169				}
1170				nti = SIMPLEQ_NEXT(ti, entries);
1171				free(ti);
1172			}
1173		}
1174		;
1175
1176table_opts	:	{
1177			bzero(&table_opts, sizeof table_opts);
1178			SIMPLEQ_INIT(&table_opts.init_nodes);
1179		}
1180		    table_opts_l
1181			{ $$ = table_opts; }
1182		| /* empty */
1183			{
1184			bzero(&table_opts, sizeof table_opts);
1185			SIMPLEQ_INIT(&table_opts.init_nodes);
1186			$$ = table_opts;
1187		}
1188		;
1189
1190table_opts_l	: table_opts_l table_opt
1191		| table_opt
1192		;
1193
1194table_opt	: STRING		{
1195			if (!strcmp($1, "const"))
1196				table_opts.flags |= PFR_TFLAG_CONST;
1197			else if (!strcmp($1, "persist"))
1198				table_opts.flags |= PFR_TFLAG_PERSIST;
1199			else if (!strcmp($1, "counters"))
1200				table_opts.flags |= PFR_TFLAG_COUNTERS;
1201			else {
1202				yyerror("invalid table option '%s'", $1);
1203				free($1);
1204				YYERROR;
1205			}
1206			free($1);
1207		}
1208		| '{' optnl '}'		{ table_opts.init_addr = 1; }
1209		| '{' optnl table_host_list '}'	{
1210			struct node_host	*n;
1211			struct node_tinit	*ti;
1212
1213			for (n = $3; n != NULL; n = n->next) {
1214				switch (n->addr.type) {
1215				case PF_ADDR_ADDRMASK:
1216					continue; /* ok */
1217				case PF_ADDR_RANGE:
1218					yyerror("address ranges are not "
1219					    "permitted inside tables");
1220					break;
1221				case PF_ADDR_DYNIFTL:
1222					yyerror("dynamic addresses are not "
1223					    "permitted inside tables");
1224					break;
1225				case PF_ADDR_TABLE:
1226					yyerror("tables cannot contain tables");
1227					break;
1228				case PF_ADDR_NOROUTE:
1229					yyerror("\"no-route\" is not permitted "
1230					    "inside tables");
1231					break;
1232				case PF_ADDR_URPFFAILED:
1233					yyerror("\"urpf-failed\" is not "
1234					    "permitted inside tables");
1235					break;
1236				default:
1237					yyerror("unknown address type %d",
1238					    n->addr.type);
1239				}
1240				YYERROR;
1241			}
1242			if (!(ti = calloc(1, sizeof(*ti))))
1243				err(1, "table_opt: calloc");
1244			ti->host = $3;
1245			SIMPLEQ_INSERT_TAIL(&table_opts.init_nodes, ti,
1246			    entries);
1247			table_opts.init_addr = 1;
1248		}
1249		| FILENAME STRING	{
1250			struct node_tinit	*ti;
1251
1252			if (!(ti = calloc(1, sizeof(*ti))))
1253				err(1, "table_opt: calloc");
1254			ti->file = $2;
1255			SIMPLEQ_INSERT_TAIL(&table_opts.init_nodes, ti,
1256			    entries);
1257			table_opts.init_addr = 1;
1258		}
1259		;
1260
1261tablespec	: xhost	optweight		{
1262			if ($2 > 0) {
1263				struct node_host	*n;
1264				for (n = $1; n != NULL; n = n->next)
1265					n->weight = $2;
1266			}
1267			$$ = $1;
1268		}
1269		| '{' optnl table_host_list '}'	{ $$ = $3; }
1270		;
1271
1272table_host_list	: tablespec optnl			{ $$ = $1; }
1273		| table_host_list comma tablespec optnl {
1274			$1->tail->next = $3;
1275			$1->tail = $3->tail;
1276			$$ = $1;
1277		}
1278		;
1279
1280altqif		: ALTQ interface queue_opts QUEUE qassign {
1281			struct pf_altq	a;
1282
1283			memset(&a, 0, sizeof(a));
1284			if ($3.scheduler.qtype == ALTQT_NONE) {
1285				yyerror("no scheduler specified!");
1286				YYERROR;
1287			}
1288			a.scheduler = $3.scheduler.qtype;
1289			a.qlimit = $3.qlimit;
1290			a.tbrsize = $3.tbrsize;
1291			if ($5 == NULL) {
1292				yyerror("no child queues specified");
1293				YYERROR;
1294			}
1295			if (expand_altq(&a, $2, $5, $3.queue_bwspec,
1296			    &$3.scheduler))
1297				YYERROR;
1298		}
1299		;
1300
1301queuespec	: QUEUE STRING interface queue_opts qassign {
1302			struct pf_altq	a;
1303
1304			memset(&a, 0, sizeof(a));
1305			if (strlcpy(a.qname, $2, sizeof(a.qname)) >=
1306			    sizeof(a.qname)) {
1307				yyerror("queue name too long (max "
1308				    "%d chars)", PF_QNAME_SIZE-1);
1309				free($2);
1310				YYERROR;
1311			}
1312			free($2);
1313			if ($4.tbrsize) {
1314				yyerror("cannot specify tbrsize for queue");
1315				YYERROR;
1316			}
1317			if ($4.priority > 255) {
1318				yyerror("priority out of range: max 255");
1319				YYERROR;
1320			}
1321			a.priority = $4.priority;
1322			a.qlimit = $4.qlimit;
1323			a.scheduler = $4.scheduler.qtype;
1324			if (expand_queue(&a, $3, $5, $4.queue_bwspec,
1325			    &$4.scheduler)) {
1326				yyerror("errors in queue definition");
1327				YYERROR;
1328			}
1329		}
1330		;
1331
1332queue_opts	:	{
1333			bzero(&queue_opts, sizeof queue_opts);
1334			queue_opts.priority = DEFAULT_PRIORITY;
1335			queue_opts.qlimit = DEFAULT_QLIMIT;
1336			queue_opts.scheduler.qtype = ALTQT_NONE;
1337			queue_opts.queue_bwspec.bw_percent = 100;
1338		}
1339		    queue_opts_l
1340			{ $$ = queue_opts; }
1341		| /* empty */ {
1342			bzero(&queue_opts, sizeof queue_opts);
1343			queue_opts.priority = DEFAULT_PRIORITY;
1344			queue_opts.qlimit = DEFAULT_QLIMIT;
1345			queue_opts.scheduler.qtype = ALTQT_NONE;
1346			queue_opts.queue_bwspec.bw_percent = 100;
1347			$$ = queue_opts;
1348		}
1349		;
1350
1351queue_opts_l	: queue_opts_l queue_opt
1352		| queue_opt
1353		;
1354
1355queue_opt	: BANDWIDTH bandwidth	{
1356			if (queue_opts.marker & QOM_BWSPEC) {
1357				yyerror("bandwidth cannot be respecified");
1358				YYERROR;
1359			}
1360			queue_opts.marker |= QOM_BWSPEC;
1361			queue_opts.queue_bwspec = $2;
1362		}
1363		| PRIORITY NUMBER	{
1364			if (queue_opts.marker & QOM_PRIORITY) {
1365				yyerror("priority cannot be respecified");
1366				YYERROR;
1367			}
1368			if ($2 < 0 || $2 > 255) {
1369				yyerror("priority out of range: max 255");
1370				YYERROR;
1371			}
1372			queue_opts.marker |= QOM_PRIORITY;
1373			queue_opts.priority = $2;
1374		}
1375		| QLIMIT NUMBER	{
1376			if (queue_opts.marker & QOM_QLIMIT) {
1377				yyerror("qlimit cannot be respecified");
1378				YYERROR;
1379			}
1380			if ($2 < 0 || $2 > 65535) {
1381				yyerror("qlimit out of range: max 65535");
1382				YYERROR;
1383			}
1384			queue_opts.marker |= QOM_QLIMIT;
1385			queue_opts.qlimit = $2;
1386		}
1387		| scheduler	{
1388			if (queue_opts.marker & QOM_SCHEDULER) {
1389				yyerror("scheduler cannot be respecified");
1390				YYERROR;
1391			}
1392			queue_opts.marker |= QOM_SCHEDULER;
1393			queue_opts.scheduler = $1;
1394		}
1395		| TBRSIZE NUMBER	{
1396			if (queue_opts.marker & QOM_TBRSIZE) {
1397				yyerror("tbrsize cannot be respecified");
1398				YYERROR;
1399			}
1400			if ($2 < 0 || $2 > 65535) {
1401				yyerror("tbrsize too big: max 65535");
1402				YYERROR;
1403			}
1404			queue_opts.marker |= QOM_TBRSIZE;
1405			queue_opts.tbrsize = $2;
1406		}
1407		;
1408
1409bandwidth	: STRING {
1410			double	 bps;
1411			char	*cp;
1412
1413			$$.bw_percent = 0;
1414
1415			bps = strtod($1, &cp);
1416			if (cp != NULL) {
1417				if (!strcmp(cp, "b"))
1418					; /* nothing */
1419				else if (!strcmp(cp, "Kb"))
1420					bps *= 1000;
1421				else if (!strcmp(cp, "Mb"))
1422					bps *= 1000 * 1000;
1423				else if (!strcmp(cp, "Gb"))
1424					bps *= 1000 * 1000 * 1000;
1425				else if (!strcmp(cp, "%")) {
1426					if (bps < 0 || bps > 100) {
1427						yyerror("bandwidth spec "
1428						    "out of range");
1429						free($1);
1430						YYERROR;
1431					}
1432					$$.bw_percent = bps;
1433					bps = 0;
1434				} else {
1435					yyerror("unknown unit %s", cp);
1436					free($1);
1437					YYERROR;
1438				}
1439			}
1440			free($1);
1441			$$.bw_absolute = (u_int32_t)bps;
1442		}
1443		| NUMBER {
1444			if ($1 < 0 || $1 > UINT_MAX) {
1445				yyerror("bandwidth number too big");
1446				YYERROR;
1447			}
1448			$$.bw_percent = 0;
1449			$$.bw_absolute = $1;
1450		}
1451		;
1452
1453scheduler	: CBQ				{
1454			$$.qtype = ALTQT_CBQ;
1455			$$.data.cbq_opts.flags = 0;
1456		}
1457		| CBQ '(' cbqflags_list ')'	{
1458			$$.qtype = ALTQT_CBQ;
1459			$$.data.cbq_opts.flags = $3;
1460		}
1461		| PRIQ				{
1462			$$.qtype = ALTQT_PRIQ;
1463			$$.data.priq_opts.flags = 0;
1464		}
1465		| PRIQ '(' priqflags_list ')'	{
1466			$$.qtype = ALTQT_PRIQ;
1467			$$.data.priq_opts.flags = $3;
1468		}
1469		| HFSC				{
1470			$$.qtype = ALTQT_HFSC;
1471			bzero(&$$.data.hfsc_opts,
1472			    sizeof(struct node_hfsc_opts));
1473		}
1474		| HFSC '(' hfsc_opts ')'	{
1475			$$.qtype = ALTQT_HFSC;
1476			$$.data.hfsc_opts = $3;
1477		}
1478		;
1479
1480cbqflags_list	: cbqflags_item				{ $$ |= $1; }
1481		| cbqflags_list comma cbqflags_item	{ $$ |= $3; }
1482		;
1483
1484cbqflags_item	: STRING	{
1485			if (!strcmp($1, "default"))
1486				$$ = CBQCLF_DEFCLASS;
1487			else if (!strcmp($1, "borrow"))
1488				$$ = CBQCLF_BORROW;
1489			else if (!strcmp($1, "red"))
1490				$$ = CBQCLF_RED;
1491			else if (!strcmp($1, "ecn"))
1492				$$ = CBQCLF_RED|CBQCLF_ECN;
1493			else {
1494				yyerror("unknown cbq flag \"%s\"", $1);
1495				free($1);
1496				YYERROR;
1497			}
1498			free($1);
1499		}
1500		;
1501
1502priqflags_list	: priqflags_item			{ $$ |= $1; }
1503		| priqflags_list comma priqflags_item	{ $$ |= $3; }
1504		;
1505
1506priqflags_item	: STRING	{
1507			if (!strcmp($1, "default"))
1508				$$ = PRCF_DEFAULTCLASS;
1509			else if (!strcmp($1, "red"))
1510				$$ = PRCF_RED;
1511			else if (!strcmp($1, "ecn"))
1512				$$ = PRCF_RED|PRCF_ECN;
1513			else {
1514				yyerror("unknown priq flag \"%s\"", $1);
1515				free($1);
1516				YYERROR;
1517			}
1518			free($1);
1519		}
1520		;
1521
1522hfsc_opts	:	{
1523				bzero(&hfsc_opts,
1524				    sizeof(struct node_hfsc_opts));
1525			}
1526		    hfscopts_list				{
1527			$$ = hfsc_opts;
1528		}
1529		;
1530
1531hfscopts_list	: hfscopts_item
1532		| hfscopts_list comma hfscopts_item
1533		;
1534
1535hfscopts_item	: LINKSHARE bandwidth				{
1536			if (hfsc_opts.linkshare.used) {
1537				yyerror("linkshare already specified");
1538				YYERROR;
1539			}
1540			hfsc_opts.linkshare.m2 = $2;
1541			hfsc_opts.linkshare.used = 1;
1542		}
1543		| LINKSHARE '(' bandwidth comma NUMBER comma bandwidth ')'
1544		    {
1545			if ($5 < 0 || $5 > INT_MAX) {
1546				yyerror("timing in curve out of range");
1547				YYERROR;
1548			}
1549			if (hfsc_opts.linkshare.used) {
1550				yyerror("linkshare already specified");
1551				YYERROR;
1552			}
1553			hfsc_opts.linkshare.m1 = $3;
1554			hfsc_opts.linkshare.d = $5;
1555			hfsc_opts.linkshare.m2 = $7;
1556			hfsc_opts.linkshare.used = 1;
1557		}
1558		| REALTIME bandwidth				{
1559			if (hfsc_opts.realtime.used) {
1560				yyerror("realtime already specified");
1561				YYERROR;
1562			}
1563			hfsc_opts.realtime.m2 = $2;
1564			hfsc_opts.realtime.used = 1;
1565		}
1566		| REALTIME '(' bandwidth comma NUMBER comma bandwidth ')'
1567		    {
1568			if ($5 < 0 || $5 > INT_MAX) {
1569				yyerror("timing in curve out of range");
1570				YYERROR;
1571			}
1572			if (hfsc_opts.realtime.used) {
1573				yyerror("realtime already specified");
1574				YYERROR;
1575			}
1576			hfsc_opts.realtime.m1 = $3;
1577			hfsc_opts.realtime.d = $5;
1578			hfsc_opts.realtime.m2 = $7;
1579			hfsc_opts.realtime.used = 1;
1580		}
1581		| UPPERLIMIT bandwidth				{
1582			if (hfsc_opts.upperlimit.used) {
1583				yyerror("upperlimit already specified");
1584				YYERROR;
1585			}
1586			hfsc_opts.upperlimit.m2 = $2;
1587			hfsc_opts.upperlimit.used = 1;
1588		}
1589		| UPPERLIMIT '(' bandwidth comma NUMBER comma bandwidth ')'
1590		    {
1591			if ($5 < 0 || $5 > INT_MAX) {
1592				yyerror("timing in curve out of range");
1593				YYERROR;
1594			}
1595			if (hfsc_opts.upperlimit.used) {
1596				yyerror("upperlimit already specified");
1597				YYERROR;
1598			}
1599			hfsc_opts.upperlimit.m1 = $3;
1600			hfsc_opts.upperlimit.d = $5;
1601			hfsc_opts.upperlimit.m2 = $7;
1602			hfsc_opts.upperlimit.used = 1;
1603		}
1604		| STRING	{
1605			if (!strcmp($1, "default"))
1606				hfsc_opts.flags |= HFCF_DEFAULTCLASS;
1607			else if (!strcmp($1, "red"))
1608				hfsc_opts.flags |= HFCF_RED;
1609			else if (!strcmp($1, "ecn"))
1610				hfsc_opts.flags |= HFCF_RED|HFCF_ECN;
1611			else {
1612				yyerror("unknown hfsc flag \"%s\"", $1);
1613				free($1);
1614				YYERROR;
1615			}
1616			free($1);
1617		}
1618		;
1619
1620qassign		: /* empty */		{ $$ = NULL; }
1621		| qassign_item		{ $$ = $1; }
1622		| '{' optnl qassign_list '}'	{ $$ = $3; }
1623		;
1624
1625qassign_list	: qassign_item optnl		{ $$ = $1; }
1626		| qassign_list comma qassign_item optnl	{
1627			$1->tail->next = $3;
1628			$1->tail = $3;
1629			$$ = $1;
1630		}
1631		;
1632
1633qassign_item	: STRING			{
1634			$$ = calloc(1, sizeof(struct node_queue));
1635			if ($$ == NULL)
1636				err(1, "qassign_item: calloc");
1637			if (strlcpy($$->queue, $1, sizeof($$->queue)) >=
1638			    sizeof($$->queue)) {
1639				yyerror("queue name '%s' too long (max "
1640				    "%d chars)", $1, sizeof($$->queue)-1);
1641				free($1);
1642				free($$);
1643				YYERROR;
1644			}
1645			free($1);
1646			$$->next = NULL;
1647			$$->tail = $$;
1648		}
1649		;
1650
1651pfrule		: action dir logquick interface af proto fromto
1652		    filter_opts
1653		{
1654			struct pf_rule		 r;
1655			struct node_state_opt	*o;
1656			struct node_proto	*proto;
1657			int			 srctrack = 0;
1658			int			 statelock = 0;
1659			int			 adaptive = 0;
1660			int			 defaults = 0;
1661
1662			memset(&r, 0, sizeof(r));
1663			r.action = $1.b1;
1664			switch ($1.b2) {
1665			case PFRULE_RETURNRST:
1666				r.rule_flag |= PFRULE_RETURNRST;
1667				r.return_ttl = $1.w;
1668				break;
1669			case PFRULE_RETURNICMP:
1670				r.rule_flag |= PFRULE_RETURNICMP;
1671				r.return_icmp = $1.w;
1672				r.return_icmp6 = $1.w2;
1673				break;
1674			case PFRULE_RETURN:
1675				r.rule_flag |= PFRULE_RETURN;
1676				r.return_icmp = $1.w;
1677				r.return_icmp6 = $1.w2;
1678				break;
1679			}
1680			r.direction = $2;
1681			r.log = $3.log;
1682			r.logif = $3.logif;
1683			r.quick = $3.quick;
1684			r.prob = $8.prob;
1685			r.rtableid = $8.rtableid;
1686
1687			if ($8.nodf)
1688				r.scrub_flags |= PFSTATE_NODF;
1689			if ($8.randomid)
1690				r.scrub_flags |= PFSTATE_RANDOMID;
1691			if ($8.minttl)
1692				r.min_ttl = $8.minttl;
1693			if ($8.max_mss)
1694				r.max_mss = $8.max_mss;
1695			if ($8.marker & FOM_SETTOS) {
1696				r.scrub_flags |= PFSTATE_SETTOS;
1697				r.set_tos = $8.settos;
1698			}
1699			if ($8.marker & FOM_SCRUB_TCP)
1700				r.scrub_flags |= PFSTATE_SCRUB_TCP;
1701			if ($8.marker & FOM_SETPRIO) {
1702				r.set_prio[0] = $8.set_prio[0];
1703				r.set_prio[1] = $8.set_prio[1];
1704				r.scrub_flags |= PFSTATE_SETPRIO;
1705			}
1706			if ($8.marker & FOM_ONCE)
1707				r.rule_flag |= PFRULE_ONCE;
1708			if ($8.marker & FOM_AFTO)
1709				r.rule_flag |= PFRULE_AFTO;
1710			r.af = $5;
1711
1712			if ($8.tag)
1713				if (strlcpy(r.tagname, $8.tag,
1714				    PF_TAG_NAME_SIZE) >= PF_TAG_NAME_SIZE) {
1715					yyerror("tag too long, max %u chars",
1716					    PF_TAG_NAME_SIZE - 1);
1717					YYERROR;
1718				}
1719			if ($8.match_tag)
1720				if (strlcpy(r.match_tagname, $8.match_tag,
1721				    PF_TAG_NAME_SIZE) >= PF_TAG_NAME_SIZE) {
1722					yyerror("tag too long, max %u chars",
1723					    PF_TAG_NAME_SIZE - 1);
1724					YYERROR;
1725				}
1726			r.match_tag_not = $8.match_tag_not;
1727			if (rule_label(&r, $8.label))
1728				YYERROR;
1729			free($8.label);
1730			r.flags = $8.flags.b1;
1731			r.flagset = $8.flags.b2;
1732			if (($8.flags.b1 & $8.flags.b2) != $8.flags.b1) {
1733				yyerror("flags always false");
1734				YYERROR;
1735			}
1736			if ($8.flags.b1 || $8.flags.b2 || $7.src_os) {
1737				for (proto = $6; proto != NULL &&
1738				    proto->proto != IPPROTO_TCP;
1739				    proto = proto->next)
1740					;	/* nothing */
1741				if (proto == NULL && $6 != NULL) {
1742					if ($8.flags.b1 || $8.flags.b2)
1743						yyerror(
1744						    "flags only apply to tcp");
1745					if ($7.src_os)
1746						yyerror(
1747						    "OS fingerprinting only "
1748						    "apply to tcp");
1749					YYERROR;
1750				}
1751#if 0
1752				if (($8.flags.b1 & parse_flags("S")) == 0 &&
1753				    $7.src_os) {
1754					yyerror("OS fingerprinting requires "
1755					    "the SYN TCP flag (flags S/SA)");
1756					YYERROR;
1757				}
1758#endif
1759			}
1760
1761			r.tos = $8.tos;
1762			r.keep_state = $8.keep.action;
1763			o = $8.keep.options;
1764
1765			/* 'keep state' by default on pass rules. */
1766			if (!r.keep_state && !r.action &&
1767			    !($8.marker & FOM_KEEP)) {
1768				r.keep_state = PF_STATE_NORMAL;
1769				o = keep_state_defaults;
1770				defaults = 1;
1771			}
1772
1773			while (o) {
1774				struct node_state_opt	*p = o;
1775
1776				switch (o->type) {
1777				case PF_STATE_OPT_MAX:
1778					if (r.max_states) {
1779						yyerror("state option 'max' "
1780						    "multiple definitions");
1781						YYERROR;
1782					}
1783					r.max_states = o->data.max_states;
1784					break;
1785				case PF_STATE_OPT_NOSYNC:
1786					if (r.rule_flag & PFRULE_NOSYNC) {
1787						yyerror("state option 'sync' "
1788						    "multiple definitions");
1789						YYERROR;
1790					}
1791					r.rule_flag |= PFRULE_NOSYNC;
1792					break;
1793				case PF_STATE_OPT_SRCTRACK:
1794					if (srctrack) {
1795						yyerror("state option "
1796						    "'source-track' "
1797						    "multiple definitions");
1798						YYERROR;
1799					}
1800					srctrack =  o->data.src_track;
1801					r.rule_flag |= PFRULE_SRCTRACK;
1802					break;
1803				case PF_STATE_OPT_MAX_SRC_STATES:
1804					if (r.max_src_states) {
1805						yyerror("state option "
1806						    "'max-src-states' "
1807						    "multiple definitions");
1808						YYERROR;
1809					}
1810					if (o->data.max_src_states == 0) {
1811						yyerror("'max-src-states' must "
1812						    "be > 0");
1813						YYERROR;
1814					}
1815					r.max_src_states =
1816					    o->data.max_src_states;
1817					r.rule_flag |= PFRULE_SRCTRACK;
1818					break;
1819				case PF_STATE_OPT_OVERLOAD:
1820					if (r.overload_tblname[0]) {
1821						yyerror("multiple 'overload' "
1822						    "table definitions");
1823						YYERROR;
1824					}
1825					if (strlcpy(r.overload_tblname,
1826					    o->data.overload.tblname,
1827					    PF_TABLE_NAME_SIZE) >=
1828					    PF_TABLE_NAME_SIZE) {
1829						yyerror("state option: "
1830						    "strlcpy");
1831						YYERROR;
1832					}
1833					r.flush = o->data.overload.flush;
1834					break;
1835				case PF_STATE_OPT_MAX_SRC_CONN:
1836					if (r.max_src_conn) {
1837						yyerror("state option "
1838						    "'max-src-conn' "
1839						    "multiple definitions");
1840						YYERROR;
1841					}
1842					if (o->data.max_src_conn == 0) {
1843						yyerror("'max-src-conn' "
1844						    "must be > 0");
1845						YYERROR;
1846					}
1847					r.max_src_conn =
1848					    o->data.max_src_conn;
1849					r.rule_flag |= PFRULE_SRCTRACK |
1850					    PFRULE_RULESRCTRACK;
1851					break;
1852				case PF_STATE_OPT_MAX_SRC_CONN_RATE:
1853					if (r.max_src_conn_rate.limit) {
1854						yyerror("state option "
1855						    "'max-src-conn-rate' "
1856						    "multiple definitions");
1857						YYERROR;
1858					}
1859					if (!o->data.max_src_conn_rate.limit ||
1860					    !o->data.max_src_conn_rate.seconds) {
1861						yyerror("'max-src-conn-rate' "
1862						    "values must be > 0");
1863						YYERROR;
1864					}
1865					if (o->data.max_src_conn_rate.limit >
1866					    PF_THRESHOLD_MAX) {
1867						yyerror("'max-src-conn-rate' "
1868						    "maximum rate must be < %u",
1869						    PF_THRESHOLD_MAX);
1870						YYERROR;
1871					}
1872					r.max_src_conn_rate.limit =
1873					    o->data.max_src_conn_rate.limit;
1874					r.max_src_conn_rate.seconds =
1875					    o->data.max_src_conn_rate.seconds;
1876					r.rule_flag |= PFRULE_SRCTRACK |
1877					    PFRULE_RULESRCTRACK;
1878					break;
1879				case PF_STATE_OPT_MAX_SRC_NODES:
1880					if (r.max_src_nodes) {
1881						yyerror("state option "
1882						    "'max-src-nodes' "
1883						    "multiple definitions");
1884						YYERROR;
1885					}
1886					if (o->data.max_src_nodes == 0) {
1887						yyerror("'max-src-nodes' must "
1888						    "be > 0");
1889						YYERROR;
1890					}
1891					r.max_src_nodes =
1892					    o->data.max_src_nodes;
1893					r.rule_flag |= PFRULE_SRCTRACK |
1894					    PFRULE_RULESRCTRACK;
1895					break;
1896				case PF_STATE_OPT_STATELOCK:
1897					if (statelock) {
1898						yyerror("state locking option: "
1899						    "multiple definitions");
1900						YYERROR;
1901					}
1902					statelock = 1;
1903					r.rule_flag |= o->data.statelock;
1904					break;
1905				case PF_STATE_OPT_SLOPPY:
1906					if (r.rule_flag & PFRULE_STATESLOPPY) {
1907						yyerror("state sloppy option: "
1908						    "multiple definitions");
1909						YYERROR;
1910					}
1911					r.rule_flag |= PFRULE_STATESLOPPY;
1912					break;
1913				case PF_STATE_OPT_PFLOW:
1914					if (r.rule_flag & PFRULE_PFLOW) {
1915						yyerror("state pflow "
1916						    "option: multiple "
1917						    "definitions");
1918						YYERROR;
1919					}
1920					r.rule_flag |= PFRULE_PFLOW;
1921					break;
1922				case PF_STATE_OPT_TIMEOUT:
1923					if (o->data.timeout.number ==
1924					    PFTM_ADAPTIVE_START ||
1925					    o->data.timeout.number ==
1926					    PFTM_ADAPTIVE_END)
1927						adaptive = 1;
1928					if (r.timeout[o->data.timeout.number]) {
1929						yyerror("state timeout %s "
1930						    "multiple definitions",
1931						    pf_timeouts[o->data.
1932						    timeout.number].name);
1933						YYERROR;
1934					}
1935					r.timeout[o->data.timeout.number] =
1936					    o->data.timeout.seconds;
1937				}
1938				o = o->next;
1939				if (!defaults)
1940					free(p);
1941			}
1942
1943			/* 'flags S/SA' by default on stateful rules */
1944			if (!r.action && !r.flags && !r.flagset &&
1945			    !$8.fragment && !($8.marker & FOM_FLAGS) &&
1946			    r.keep_state) {
1947				r.flags = parse_flags("S");
1948				r.flagset =  parse_flags("SA");
1949			}
1950			if (!adaptive && r.max_states) {
1951				r.timeout[PFTM_ADAPTIVE_START] =
1952				    (r.max_states / 10) * 6;
1953				r.timeout[PFTM_ADAPTIVE_END] =
1954				    (r.max_states / 10) * 12;
1955			}
1956			if (r.rule_flag & PFRULE_SRCTRACK) {
1957				if (srctrack == PF_SRCTRACK_GLOBAL &&
1958				    r.max_src_nodes) {
1959					yyerror("'max-src-nodes' is "
1960					    "incompatible with "
1961					    "'source-track global'");
1962					YYERROR;
1963				}
1964				if (srctrack == PF_SRCTRACK_GLOBAL &&
1965				    r.max_src_conn) {
1966					yyerror("'max-src-conn' is "
1967					    "incompatible with "
1968					    "'source-track global'");
1969					YYERROR;
1970				}
1971				if (srctrack == PF_SRCTRACK_GLOBAL &&
1972				    r.max_src_conn_rate.seconds) {
1973					yyerror("'max-src-conn-rate' is "
1974					    "incompatible with "
1975					    "'source-track global'");
1976					YYERROR;
1977				}
1978				if (r.timeout[PFTM_SRC_NODE] <
1979				    r.max_src_conn_rate.seconds)
1980					r.timeout[PFTM_SRC_NODE] =
1981					    r.max_src_conn_rate.seconds;
1982				r.rule_flag |= PFRULE_SRCTRACK;
1983				if (srctrack == PF_SRCTRACK_RULE)
1984					r.rule_flag |= PFRULE_RULESRCTRACK;
1985			}
1986			if (r.keep_state && !statelock)
1987				r.rule_flag |= default_statelock;
1988
1989			if ($8.fragment)
1990				r.rule_flag |= PFRULE_FRAGMENT;
1991			r.allow_opts = $8.allowopts;
1992
1993			decide_address_family($7.src.host, &r.af);
1994			decide_address_family($7.dst.host, &r.af);
1995
1996			if ($8.route.rt) {
1997				if (!r.direction) {
1998					yyerror("direction must be explicit "
1999					    "with rules that specify routing");
2000					YYERROR;
2001				}
2002				r.rt = $8.route.rt;
2003				r.route.opts = $8.route.pool_opts;
2004				if ($8.route.key != NULL)
2005					memcpy(&r.route.key, $8.route.key,
2006					    sizeof(struct pf_poolhashkey));
2007			}
2008			if (r.rt) {
2009				decide_address_family($8.route.host, &r.af);
2010				if ((r.route.opts & PF_POOL_TYPEMASK) ==
2011				    PF_POOL_NONE && ($8.route.host->next != NULL ||
2012				    $8.route.host->addr.type == PF_ADDR_TABLE ||
2013				    DYNIF_MULTIADDR($8.route.host->addr)))
2014					r.route.opts |= PF_POOL_ROUNDROBIN;
2015				if ($8.route.host->next != NULL) {
2016					if (((r.route.opts & PF_POOL_TYPEMASK) !=
2017					    PF_POOL_ROUNDROBIN) &&
2018					    ((r.route.opts & PF_POOL_TYPEMASK) !=
2019					    PF_POOL_LEASTSTATES)) {
2020						yyerror("r.route.opts must "
2021						    "be PF_POOL_ROUNDROBIN "
2022						    "or PF_POOL_LEASTSTATES");
2023						YYERROR;
2024					}
2025				}
2026				/* fake redirspec */
2027				if (($8.rroute.rdr = calloc(1,
2028				    sizeof(*$8.rroute.rdr))) == NULL)
2029					err(1, "$8.rroute.rdr");
2030				$8.rroute.rdr->host = $8.route.host;
2031			}
2032			if ($8.queues.qname != NULL) {
2033				if (strlcpy(r.qname, $8.queues.qname,
2034				    sizeof(r.qname)) >= sizeof(r.qname)) {
2035					yyerror("rule qname too long (max "
2036					    "%d chars)", sizeof(r.qname)-1);
2037					YYERROR;
2038				}
2039				free($8.queues.qname);
2040			}
2041			if ($8.queues.pqname != NULL) {
2042				if (strlcpy(r.pqname, $8.queues.pqname,
2043				    sizeof(r.pqname)) >= sizeof(r.pqname)) {
2044					yyerror("rule pqname too long (max "
2045					    "%d chars)", sizeof(r.pqname)-1);
2046					YYERROR;
2047				}
2048				free($8.queues.pqname);
2049			}
2050			if ((r.divert.port = $8.divert.port)) {
2051				if (r.direction == PF_OUT) {
2052					if ($8.divert.addr) {
2053						yyerror("address specified "
2054						    "for outgoing divert");
2055						YYERROR;
2056					}
2057					bzero(&r.divert.addr,
2058					    sizeof(r.divert.addr));
2059				} else {
2060					if (!$8.divert.addr) {
2061						yyerror("no address specified "
2062						    "for incoming divert");
2063						YYERROR;
2064					}
2065					if ($8.divert.addr->af != r.af) {
2066						yyerror("address family "
2067						    "mismatch for divert");
2068						YYERROR;
2069					}
2070					r.divert.addr =
2071					    $8.divert.addr->addr.v.a.addr;
2072				}
2073			}
2074			r.divert_packet.port = $8.divert_packet.port;
2075
2076			expand_rule(&r, 0, $4, &$8.nat, &$8.rdr, &$8.rroute, $6,
2077			    $7.src_os,
2078			    $7.src.host, $7.src.port, $7.dst.host, $7.dst.port,
2079			    $8.uid, $8.gid, $8.rcv, $8.icmpspec, "");
2080		}
2081		;
2082
2083filter_opts	:	{
2084				bzero(&filter_opts, sizeof filter_opts);
2085				filter_opts.rtableid = -1;
2086			}
2087		    filter_opts_l
2088			{ $$ = filter_opts; }
2089		| /* empty */	{
2090			bzero(&filter_opts, sizeof filter_opts);
2091			filter_opts.rtableid = -1;
2092			$$ = filter_opts;
2093		}
2094		;
2095
2096filter_opts_l	: filter_opts_l filter_opt
2097		| filter_opt
2098		;
2099
2100filter_opt	: USER uids {
2101			if (filter_opts.uid)
2102				$2->tail->next = filter_opts.uid;
2103			filter_opts.uid = $2;
2104		}
2105		| GROUP gids {
2106			if (filter_opts.gid)
2107				$2->tail->next = filter_opts.gid;
2108			filter_opts.gid = $2;
2109		}
2110		| flags {
2111			if (filter_opts.marker & FOM_FLAGS) {
2112				yyerror("flags cannot be redefined");
2113				YYERROR;
2114			}
2115			filter_opts.marker |= FOM_FLAGS;
2116			filter_opts.flags.b1 |= $1.b1;
2117			filter_opts.flags.b2 |= $1.b2;
2118			filter_opts.flags.w |= $1.w;
2119			filter_opts.flags.w2 |= $1.w2;
2120		}
2121		| icmpspec {
2122			if (filter_opts.marker & FOM_ICMP) {
2123				yyerror("icmp-type cannot be redefined");
2124				YYERROR;
2125			}
2126			filter_opts.marker |= FOM_ICMP;
2127			filter_opts.icmpspec = $1;
2128		}
2129		| TOS tos {
2130			if (filter_opts.marker & FOM_TOS) {
2131				yyerror("tos cannot be redefined");
2132				YYERROR;
2133			}
2134			filter_opts.marker |= FOM_TOS;
2135			filter_opts.tos = $2;
2136		}
2137		| keep {
2138			if (filter_opts.marker & FOM_KEEP) {
2139				yyerror("modulate or keep cannot be redefined");
2140				YYERROR;
2141			}
2142			filter_opts.marker |= FOM_KEEP;
2143			filter_opts.keep.action = $1.action;
2144			filter_opts.keep.options = $1.options;
2145		}
2146		| FRAGMENT {
2147			filter_opts.fragment = 1;
2148		}
2149		| ALLOWOPTS {
2150			filter_opts.allowopts = 1;
2151		}
2152		| LABEL label	{
2153			if (filter_opts.label) {
2154				yyerror("label cannot be redefined");
2155				YYERROR;
2156			}
2157			filter_opts.label = $2;
2158		}
2159		| QUEUE qname	{
2160			if (filter_opts.queues.qname) {
2161				yyerror("queue cannot be redefined");
2162				YYERROR;
2163			}
2164			filter_opts.queues = $2;
2165		}
2166		| TAG string				{
2167			filter_opts.tag = $2;
2168		}
2169		| not TAGGED string			{
2170			filter_opts.match_tag = $3;
2171			filter_opts.match_tag_not = $1;
2172		}
2173		| PROBABILITY probability		{
2174			double	p;
2175
2176			p = floor($2 * UINT_MAX + 0.5);
2177			if (p < 0.0 || p > UINT_MAX) {
2178				yyerror("invalid probability: %g%%", $2 * 100);
2179				YYERROR;
2180			}
2181			filter_opts.prob = (u_int32_t)p;
2182			if (filter_opts.prob == 0)
2183				filter_opts.prob = 1;
2184		}
2185		| RTABLE NUMBER				{
2186			if ($2 < 0 || $2 > RT_TABLEID_MAX) {
2187				yyerror("invalid rtable id");
2188				YYERROR;
2189			}
2190			filter_opts.rtableid = $2;
2191		}
2192		| DIVERTTO STRING PORT portplain {
2193			if ((filter_opts.divert.addr = host($2)) == NULL) {
2194				yyerror("could not parse divert address: %s",
2195				    $2);
2196				free($2);
2197				YYERROR;
2198			}
2199			free($2);
2200			filter_opts.divert.port = $4.a;
2201			if (!filter_opts.divert.port) {
2202				yyerror("invalid divert port: %u", ntohs($4.a));
2203				YYERROR;
2204			}
2205		}
2206		| DIVERTREPLY {
2207			filter_opts.divert.port = 1;	/* some random value */
2208		}
2209		| DIVERTPACKET PORT number {
2210			/*
2211			 * If IP reassembly was not turned off, also
2212			 * forcibly enable TCP reassembly by default.
2213			 */
2214			if (pf->reassemble & PF_REASS_ENABLED)
2215				filter_opts.marker |= FOM_SCRUB_TCP;
2216
2217			if ($3 < 1 || $3 > 65535) {
2218				yyerror("invalid divert port");
2219				YYERROR;
2220			}
2221
2222			filter_opts.divert_packet.port = htons($3);
2223		}
2224		| SCRUB '(' scrub_opts ')' {
2225			filter_opts.nodf = $3.nodf;
2226			filter_opts.minttl = $3.minttl;
2227			filter_opts.randomid = $3.randomid;
2228			filter_opts.max_mss = $3.maxmss;
2229			if ($3.reassemble_tcp)
2230				filter_opts.marker |= FOM_SCRUB_TCP;
2231			filter_opts.marker |= $3.marker;
2232		}
2233		| NATTO redirpool pool_opts {
2234			if (filter_opts.nat.rdr) {
2235				yyerror("cannot respecify nat-to/binat-to");
2236				YYERROR;
2237			}
2238			filter_opts.nat.rdr = $2;
2239			memcpy(&filter_opts.nat.pool_opts, &$3,
2240			    sizeof(filter_opts.nat.pool_opts));
2241		}
2242		| AFTO af FROM redirpool pool_opts {
2243			if (filter_opts.nat.rdr) {
2244				yyerror("cannot respecify af-to");
2245				YYERROR;
2246			}
2247			if ($2 == 0) {
2248				yyerror("no address family specified");
2249				YYERROR;
2250			}
2251			if ($4->host->af && $4->host->af != $2) {
2252				yyerror("af-to addresses must be in the "
2253				    "target address family");
2254				YYERROR;
2255			}
2256			filter_opts.nat.af = $2;
2257			filter_opts.nat.rdr = $4;
2258			memcpy(&filter_opts.nat.pool_opts, &$5,
2259			    sizeof(filter_opts.nat.pool_opts));
2260			filter_opts.rdr.rdr =
2261			    calloc(1, sizeof(struct redirection));
2262			bzero(&filter_opts.rdr.pool_opts,
2263			    sizeof(filter_opts.rdr.pool_opts));
2264			filter_opts.marker |= FOM_AFTO;
2265		}
2266		| AFTO af FROM redirpool pool_opts TO redirpool pool_opts {
2267			if (filter_opts.nat.rdr) {
2268				yyerror("cannot respecify af-to");
2269				YYERROR;
2270			}
2271			if ($2 == 0) {
2272				yyerror("no address family specified");
2273				YYERROR;
2274			}
2275			if (($4->host->af && $4->host->af != $2) ||
2276			    ($7->host->af && $7->host->af != $2)) {
2277				yyerror("af-to addresses must be in the "
2278				    "target address family");
2279				YYERROR;
2280			}
2281			filter_opts.nat.af = $2;
2282			filter_opts.nat.rdr = $4;
2283			memcpy(&filter_opts.nat.pool_opts, &$5,
2284			    sizeof(filter_opts.nat.pool_opts));
2285			filter_opts.rdr.af = $2;
2286			filter_opts.rdr.rdr = $7;
2287			memcpy(&filter_opts.nat.pool_opts, &$8,
2288			    sizeof(filter_opts.nat.pool_opts));
2289			filter_opts.marker |= FOM_AFTO;
2290		}
2291		| RDRTO redirpool pool_opts {
2292			if (filter_opts.rdr.rdr) {
2293				yyerror("cannot respecify rdr-to");
2294				YYERROR;
2295			}
2296			filter_opts.rdr.rdr = $2;
2297			memcpy(&filter_opts.rdr.pool_opts, &$3,
2298			    sizeof(filter_opts.rdr.pool_opts));
2299		}
2300		| BINATTO redirpool pool_opts {
2301			if (filter_opts.nat.rdr) {
2302				yyerror("cannot respecify nat-to/binat-to");
2303				YYERROR;
2304			}
2305			filter_opts.nat.rdr = $2;
2306			filter_opts.nat.binat = 1;
2307			memcpy(&filter_opts.nat.pool_opts, &$3,
2308			    sizeof(filter_opts.nat.pool_opts));
2309			filter_opts.nat.pool_opts.staticport = 1;
2310		}
2311		| ROUTETO routespec pool_opts {
2312			filter_opts.route.host = $2;
2313			filter_opts.route.rt = PF_ROUTETO;
2314			filter_opts.route.pool_opts = $3.type | $3.opts;
2315			memcpy(&filter_opts.rroute.pool_opts, &$3,
2316			    sizeof(filter_opts.rroute.pool_opts));
2317			if ($3.key != NULL)
2318				filter_opts.route.key = $3.key;
2319		}
2320		| REPLYTO routespec pool_opts {
2321			filter_opts.route.host = $2;
2322			filter_opts.route.rt = PF_REPLYTO;
2323			filter_opts.route.pool_opts = $3.type | $3.opts;
2324			if ($3.key != NULL)
2325				filter_opts.route.key = $3.key;
2326		}
2327		| DUPTO routespec pool_opts {
2328			filter_opts.route.host = $2;
2329			filter_opts.route.rt = PF_DUPTO;
2330			filter_opts.route.pool_opts = $3.type | $3.opts;
2331			memcpy(&filter_opts.rroute.pool_opts, &$3,
2332			    sizeof(filter_opts.rroute.pool_opts));
2333			if ($3.key != NULL)
2334				filter_opts.route.key = $3.key;
2335		}
2336		| RECEIVEDON if_item {
2337			if (filter_opts.rcv) {
2338				yyerror("cannot respecify received-on");
2339				YYERROR;
2340			}
2341			filter_opts.rcv = $2;
2342		}
2343		| ONCE {
2344			filter_opts.marker |= FOM_ONCE;
2345		}
2346		| filter_sets
2347		;
2348
2349filter_sets	: SET '(' filter_sets_l ')'	{ $$ = filter_opts; }
2350		| SET filter_set		{ $$ = filter_opts; }
2351		;
2352
2353filter_sets_l	: filter_sets_l comma filter_set
2354		| filter_set
2355		;
2356
2357filter_set	: prio {
2358			if (filter_opts.marker & FOM_SETPRIO) {
2359				yyerror("prio cannot be redefined");
2360				YYERROR;
2361			}
2362			filter_opts.marker |= FOM_SETPRIO;
2363			filter_opts.set_prio[0] = $1.b1;
2364			filter_opts.set_prio[1] = $1.b2;
2365		}
2366		| QUEUE qname	{
2367			if (filter_opts.queues.qname) {
2368				yyerror("queue cannot be redefined");
2369				YYERROR;
2370			}
2371			filter_opts.queues = $2;
2372		}
2373		| TOS tos {
2374			if (filter_opts.marker & FOM_SETTOS) {
2375				yyerror("tos cannot be respecified");
2376				YYERROR;
2377			}
2378			filter_opts.marker |= FOM_SETTOS;
2379			filter_opts.settos = $2;
2380		}
2381		;
2382
2383prio		: PRIO NUMBER {
2384			if ($2 < 0 || $2 > IFQ_MAXPRIO) {
2385				yyerror("prio must be 0 - %u", IFQ_MAXPRIO);
2386				YYERROR;
2387			}
2388			$$.b1 = $$.b2 = $2;
2389		}
2390		| PRIO '(' NUMBER comma NUMBER ')' {
2391			if ($3 < 0 || $3 > IFQ_MAXPRIO ||
2392			    $5 < 0 || $5 > IFQ_MAXPRIO) {
2393				yyerror("prio must be 0 - %u", IFQ_MAXPRIO);
2394				YYERROR;
2395			}
2396			$$.b1 = $3;
2397			$$.b2 = $5;
2398		}
2399		;
2400
2401probability	: STRING				{
2402			char	*e;
2403			double	 p = strtod($1, &e);
2404
2405			if (*e == '%') {
2406				p *= 0.01;
2407				e++;
2408			}
2409			if (*e) {
2410				yyerror("invalid probability: %s", $1);
2411				free($1);
2412				YYERROR;
2413			}
2414			free($1);
2415			$$ = p;
2416		}
2417		| NUMBER				{
2418			$$ = (double)$1;
2419		}
2420		;
2421
2422
2423action		: PASS			{ $$.b1 = PF_PASS; $$.b2 = $$.w = 0; }
2424		| MATCH			{ $$.b1 = PF_MATCH; $$.b2 = $$.w = 0; }
2425		| BLOCK blockspec	{ $$ = $2; $$.b1 = PF_DROP; }
2426		;
2427
2428blockspec	: /* empty */		{
2429			$$.b2 = blockpolicy;
2430			$$.w = returnicmpdefault;
2431			$$.w2 = returnicmp6default;
2432		}
2433		| DROP			{
2434			$$.b2 = PFRULE_DROP;
2435			$$.w = 0;
2436			$$.w2 = 0;
2437		}
2438		| RETURNRST		{
2439			$$.b2 = PFRULE_RETURNRST;
2440			$$.w = 0;
2441			$$.w2 = 0;
2442		}
2443		| RETURNRST '(' TTL NUMBER ')'	{
2444			if ($4 < 0 || $4 > 255) {
2445				yyerror("illegal ttl value %d", $4);
2446				YYERROR;
2447			}
2448			$$.b2 = PFRULE_RETURNRST;
2449			$$.w = $4;
2450			$$.w2 = 0;
2451		}
2452		| RETURNICMP		{
2453			$$.b2 = PFRULE_RETURNICMP;
2454			$$.w = returnicmpdefault;
2455			$$.w2 = returnicmp6default;
2456		}
2457		| RETURNICMP6		{
2458			$$.b2 = PFRULE_RETURNICMP;
2459			$$.w = returnicmpdefault;
2460			$$.w2 = returnicmp6default;
2461		}
2462		| RETURNICMP '(' reticmpspec ')'	{
2463			$$.b2 = PFRULE_RETURNICMP;
2464			$$.w = $3;
2465			$$.w2 = returnicmpdefault;
2466		}
2467		| RETURNICMP6 '(' reticmp6spec ')'	{
2468			$$.b2 = PFRULE_RETURNICMP;
2469			$$.w = returnicmpdefault;
2470			$$.w2 = $3;
2471		}
2472		| RETURNICMP '(' reticmpspec comma reticmp6spec ')' {
2473			$$.b2 = PFRULE_RETURNICMP;
2474			$$.w = $3;
2475			$$.w2 = $5;
2476		}
2477		| RETURN {
2478			$$.b2 = PFRULE_RETURN;
2479			$$.w = returnicmpdefault;
2480			$$.w2 = returnicmp6default;
2481		}
2482		;
2483
2484reticmpspec	: STRING			{
2485			if (!($$ = parseicmpspec($1, AF_INET))) {
2486				free($1);
2487				YYERROR;
2488			}
2489			free($1);
2490		}
2491		| NUMBER			{
2492			u_int8_t		icmptype;
2493
2494			if ($1 < 0 || $1 > 255) {
2495				yyerror("invalid icmp code %lu", $1);
2496				YYERROR;
2497			}
2498			icmptype = returnicmpdefault >> 8;
2499			$$ = (icmptype << 8 | $1);
2500		}
2501		;
2502
2503reticmp6spec	: STRING			{
2504			if (!($$ = parseicmpspec($1, AF_INET6))) {
2505				free($1);
2506				YYERROR;
2507			}
2508			free($1);
2509		}
2510		| NUMBER			{
2511			u_int8_t		icmptype;
2512
2513			if ($1 < 0 || $1 > 255) {
2514				yyerror("invalid icmp code %lu", $1);
2515				YYERROR;
2516			}
2517			icmptype = returnicmp6default >> 8;
2518			$$ = (icmptype << 8 | $1);
2519		}
2520		;
2521
2522dir		: /* empty */			{ $$ = PF_INOUT; }
2523		| IN				{ $$ = PF_IN; }
2524		| OUT				{ $$ = PF_OUT; }
2525		;
2526
2527quick		: /* empty */			{ $$.quick = 0; }
2528		| QUICK				{ $$.quick = 1; }
2529		;
2530
2531logquick	: /* empty */	{ $$.log = 0; $$.quick = 0; $$.logif = 0; }
2532		| log		{ $$ = $1; $$.quick = 0; }
2533		| QUICK		{ $$.quick = 1; $$.log = 0; $$.logif = 0; }
2534		| log QUICK	{ $$ = $1; $$.quick = 1; }
2535		| QUICK log	{ $$ = $2; $$.quick = 1; }
2536		;
2537
2538log		: LOG			{ $$.log = PF_LOG; $$.logif = 0; }
2539		| LOG '(' logopts ')'	{
2540			$$.log = PF_LOG | $3.log;
2541			$$.logif = $3.logif;
2542		}
2543		;
2544
2545logopts		: logopt			{ $$ = $1; }
2546		| logopts comma logopt		{
2547			$$.log = $1.log | $3.log;
2548			$$.logif = $3.logif;
2549			if ($$.logif == 0)
2550				$$.logif = $1.logif;
2551		}
2552		;
2553
2554logopt		: ALL		{ $$.log = PF_LOG_ALL; $$.logif = 0; }
2555		| MATCHES	{ $$.log = PF_LOG_MATCHES; $$.logif = 0; }
2556		| USER		{ $$.log = PF_LOG_SOCKET_LOOKUP; $$.logif = 0; }
2557		| GROUP		{ $$.log = PF_LOG_SOCKET_LOOKUP; $$.logif = 0; }
2558		| TO string	{
2559			const char	*errstr;
2560			u_int		 i;
2561
2562			$$.log = 0;
2563			if (strncmp($2, "pflog", 5)) {
2564				yyerror("%s: should be a pflog interface", $2);
2565				free($2);
2566				YYERROR;
2567			}
2568			i = strtonum($2 + 5, 0, 255, &errstr);
2569			if (errstr) {
2570				yyerror("%s: %s", $2, errstr);
2571				free($2);
2572				YYERROR;
2573			}
2574			free($2);
2575			$$.logif = i;
2576		}
2577		;
2578
2579interface	: /* empty */			{ $$ = NULL; }
2580		| ON if_item_not		{ $$ = $2; }
2581		| ON '{' optnl if_list '}'	{ $$ = $4; }
2582		;
2583
2584if_list		: if_item_not optnl		{ $$ = $1; }
2585		| if_list comma if_item_not optnl	{
2586			$1->tail->next = $3;
2587			$1->tail = $3;
2588			$$ = $1;
2589		}
2590		;
2591
2592if_item_not	: not if_item			{ $$ = $2; $$->not = $1; }
2593		;
2594
2595if_item		: STRING			{
2596			struct node_host	*n;
2597
2598			$$ = calloc(1, sizeof(struct node_if));
2599			if ($$ == NULL)
2600				err(1, "if_item: calloc");
2601			if (strlcpy($$->ifname, $1, sizeof($$->ifname)) >=
2602			    sizeof($$->ifname)) {
2603				free($1);
2604				free($$);
2605				yyerror("interface name too long");
2606				YYERROR;
2607			}
2608
2609			if ((n = ifa_exists($1)) != NULL)
2610				$$->ifa_flags = n->ifa_flags;
2611
2612			free($1);
2613			$$->not = 0;
2614			$$->next = NULL;
2615			$$->tail = $$;
2616		}
2617		| RDOMAIN NUMBER		{
2618			if ($2 < 0 || $2 > RT_TABLEID_MAX) {
2619				yyerror("rdomain outside range");
2620				YYERROR;
2621			}
2622			$$ = calloc(1, sizeof(struct node_if));
2623			if ($$ == NULL)
2624				err(1, "if_item: calloc");
2625			$$->not = 0;
2626			$$->use_rdomain = 1;
2627			$$->rdomain = $2;
2628			$$->next = NULL;
2629			$$->tail = $$;
2630		}
2631		;
2632
2633af		: /* empty */			{ $$ = 0; }
2634		| INET				{ $$ = AF_INET; }
2635		| INET6				{ $$ = AF_INET6; }
2636		;
2637
2638proto		: /* empty */				{ $$ = NULL; }
2639		| PROTO proto_item			{ $$ = $2; }
2640		| PROTO '{' optnl proto_list '}'	{ $$ = $4; }
2641		;
2642
2643proto_list	: proto_item optnl		{ $$ = $1; }
2644		| proto_list comma proto_item optnl	{
2645			$1->tail->next = $3;
2646			$1->tail = $3;
2647			$$ = $1;
2648		}
2649		;
2650
2651proto_item	: protoval			{
2652			u_int8_t	pr;
2653
2654			pr = (u_int8_t)$1;
2655			if (pr == 0) {
2656				yyerror("proto 0 cannot be used");
2657				YYERROR;
2658			}
2659			$$ = calloc(1, sizeof(struct node_proto));
2660			if ($$ == NULL)
2661				err(1, "proto_item: calloc");
2662			$$->proto = pr;
2663			$$->next = NULL;
2664			$$->tail = $$;
2665		}
2666		;
2667
2668protoval	: STRING			{
2669			struct protoent	*p;
2670
2671			p = getprotobyname($1);
2672			if (p == NULL) {
2673				yyerror("unknown protocol %s", $1);
2674				free($1);
2675				YYERROR;
2676			}
2677			$$ = p->p_proto;
2678			free($1);
2679		}
2680		| NUMBER			{
2681			if ($1 < 0 || $1 > 255) {
2682				yyerror("protocol outside range");
2683				YYERROR;
2684			}
2685		}
2686		;
2687
2688fromto		: ALL				{
2689			$$.src.host = NULL;
2690			$$.src.port = NULL;
2691			$$.dst.host = NULL;
2692			$$.dst.port = NULL;
2693			$$.src_os = NULL;
2694		}
2695		| from os to			{
2696			$$.src = $1;
2697			$$.src_os = $2;
2698			$$.dst = $3;
2699		}
2700		;
2701
2702os		: /* empty */			{ $$ = NULL; }
2703		| OS xos			{ $$ = $2; }
2704		| OS '{' optnl os_list '}'	{ $$ = $4; }
2705		;
2706
2707xos		: STRING {
2708			$$ = calloc(1, sizeof(struct node_os));
2709			if ($$ == NULL)
2710				err(1, "os: calloc");
2711			$$->os = $1;
2712			$$->tail = $$;
2713		}
2714		;
2715
2716os_list		: xos optnl 			{ $$ = $1; }
2717		| os_list comma xos optnl	{
2718			$1->tail->next = $3;
2719			$1->tail = $3;
2720			$$ = $1;
2721		}
2722		;
2723
2724from		: /* empty */			{
2725			$$.host = NULL;
2726			$$.port = NULL;
2727		}
2728		| FROM ipportspec		{
2729			$$ = $2;
2730		}
2731		;
2732
2733to		: /* empty */			{
2734			$$.host = NULL;
2735			$$.port = NULL;
2736		}
2737		| TO ipportspec		{
2738			if (disallow_urpf_failed($2.host, "\"urpf-failed\" is "
2739			    "not permitted in a destination address"))
2740				YYERROR;
2741			$$ = $2;
2742		}
2743		;
2744
2745ipportspec	: ipspec			{
2746			$$.host = $1;
2747			$$.port = NULL;
2748		}
2749		| ipspec PORT portspec		{
2750			$$.host = $1;
2751			$$.port = $3;
2752		}
2753		| PORT portspec			{
2754			$$.host = NULL;
2755			$$.port = $2;
2756		}
2757		;
2758
2759optnl		: '\n' optnl
2760		| /* empty */
2761		;
2762
2763ipspec		: ANY				{ $$ = NULL; }
2764		| xhost				{ $$ = $1; }
2765		| '{' optnl host_list '}'	{ $$ = $3; }
2766		;
2767
2768
2769host_list	: ipspec optnl			{ $$ = $1; }
2770		| host_list comma ipspec optnl	{
2771			if ($1 == NULL) {
2772				freehostlist($3);
2773				$$ = $1;
2774			} else if ($3 == NULL) {
2775				freehostlist($1);
2776				$$ = $3;
2777			} else {
2778				$1->tail->next = $3;
2779				$1->tail = $3->tail;
2780				$$ = $1;
2781			}
2782		}
2783		;
2784
2785xhost		: not host			{
2786			struct node_host	*n;
2787
2788			for (n = $2; n != NULL; n = n->next)
2789				n->not = $1;
2790			$$ = $2;
2791		}
2792		| not NOROUTE			{
2793			$$ = calloc(1, sizeof(struct node_host));
2794			if ($$ == NULL)
2795				err(1, "xhost: calloc");
2796			$$->addr.type = PF_ADDR_NOROUTE;
2797			$$->next = NULL;
2798			$$->not = $1;
2799			$$->tail = $$;
2800		}
2801		| not URPFFAILED		{
2802			$$ = calloc(1, sizeof(struct node_host));
2803			if ($$ == NULL)
2804				err(1, "xhost: calloc");
2805			$$->addr.type = PF_ADDR_URPFFAILED;
2806			$$->next = NULL;
2807			$$->not = $1;
2808			$$->tail = $$;
2809		}
2810		;
2811
2812optweight	: WEIGHT NUMBER			{
2813			if ($2 < 1 || $2 > USHRT_MAX) {
2814				yyerror("weight out of range");
2815				YYERROR;
2816			}
2817			$$ = $2;
2818		}
2819		| /* empty */ { $$ = 0; }
2820		;
2821
2822host		: STRING			{
2823			if (($$ = host($1)) == NULL)	{
2824				/* error. "any" is handled elsewhere */
2825				free($1);
2826				yyerror("could not parse host specification");
2827				YYERROR;
2828			}
2829			free($1);
2830
2831		}
2832		| STRING '-' STRING		{
2833			struct node_host *b, *e;
2834
2835			if ((b = host($1)) == NULL || (e = host($3)) == NULL) {
2836				free($1);
2837				free($3);
2838				yyerror("could not parse host specification");
2839				YYERROR;
2840			}
2841			if (b->af != e->af ||
2842			    b->addr.type != PF_ADDR_ADDRMASK ||
2843			    e->addr.type != PF_ADDR_ADDRMASK ||
2844			    unmask(&b->addr.v.a.mask, b->af) !=
2845			    (b->af == AF_INET ? 32 : 128) ||
2846			    unmask(&e->addr.v.a.mask, e->af) !=
2847			    (e->af == AF_INET ? 32 : 128) ||
2848			    b->next != NULL || b->not ||
2849			    e->next != NULL || e->not) {
2850				free(b);
2851				free(e);
2852				free($1);
2853				free($3);
2854				yyerror("invalid address range");
2855				YYERROR;
2856			}
2857			memcpy(&b->addr.v.a.mask, &e->addr.v.a.addr,
2858			    sizeof(b->addr.v.a.mask));
2859			b->addr.type = PF_ADDR_RANGE;
2860			$$ = b;
2861			free(e);
2862			free($1);
2863			free($3);
2864		}
2865		| STRING '/' NUMBER		{
2866			char	*buf;
2867
2868			if (asprintf(&buf, "%s/%lld", $1, $3) == -1)
2869				err(1, "host: asprintf");
2870			free($1);
2871			if (($$ = host(buf)) == NULL)	{
2872				/* error. "any" is handled elsewhere */
2873				free(buf);
2874				yyerror("could not parse host specification");
2875				YYERROR;
2876			}
2877			free(buf);
2878		}
2879		| NUMBER '/' NUMBER		{
2880			char	*buf;
2881
2882			/* ie. for 10/8 parsing */
2883			if (asprintf(&buf, "%lld/%lld", $1, $3) == -1)
2884				err(1, "host: asprintf");
2885			if (($$ = host(buf)) == NULL)	{
2886				/* error. "any" is handled elsewhere */
2887				free(buf);
2888				yyerror("could not parse host specification");
2889				YYERROR;
2890			}
2891			free(buf);
2892		}
2893		| dynaddr
2894		| dynaddr '/' NUMBER		{
2895			struct node_host	*n;
2896
2897			if ($3 < 0 || $3 > 128) {
2898				yyerror("bit number too big");
2899				YYERROR;
2900			}
2901			$$ = $1;
2902			for (n = $1; n != NULL; n = n->next)
2903				set_ipmask(n, $3);
2904		}
2905		| '<' STRING '>'	{
2906			if (strlen($2) >= PF_TABLE_NAME_SIZE) {
2907				yyerror("table name '%s' too long", $2);
2908				free($2);
2909				YYERROR;
2910			}
2911			$$ = calloc(1, sizeof(struct node_host));
2912			if ($$ == NULL)
2913				err(1, "host: calloc");
2914			$$->addr.type = PF_ADDR_TABLE;
2915			if (strlcpy($$->addr.v.tblname, $2,
2916			    sizeof($$->addr.v.tblname)) >=
2917			    sizeof($$->addr.v.tblname))
2918				errx(1, "host: strlcpy");
2919			free($2);
2920			$$->next = NULL;
2921			$$->tail = $$;
2922		}
2923		| ROUTE	STRING		{
2924			$$ = calloc(1, sizeof(struct node_host));
2925			if ($$ == NULL) {
2926				free($2);
2927				err(1, "host: calloc");
2928			}
2929			$$->addr.type = PF_ADDR_RTLABEL;
2930			if (strlcpy($$->addr.v.rtlabelname, $2,
2931			    sizeof($$->addr.v.rtlabelname)) >=
2932			    sizeof($$->addr.v.rtlabelname)) {
2933				yyerror("route label too long, max %u chars",
2934				    sizeof($$->addr.v.rtlabelname) - 1);
2935				free($2);
2936				free($$);
2937				YYERROR;
2938			}
2939			$$->next = NULL;
2940			$$->tail = $$;
2941			free($2);
2942		}
2943		;
2944
2945number		: NUMBER
2946		| STRING		{
2947			u_long	ulval;
2948
2949			if (atoul($1, &ulval) == -1) {
2950				yyerror("%s is not a number", $1);
2951				free($1);
2952				YYERROR;
2953			} else
2954				$$ = ulval;
2955			free($1);
2956		}
2957		;
2958
2959dynaddr		: '(' STRING ')'		{
2960			int	 flags = 0;
2961			char	*p, *op;
2962
2963			op = $2;
2964			if (!isalpha(op[0])) {
2965				yyerror("invalid interface name '%s'", op);
2966				free(op);
2967				YYERROR;
2968			}
2969			while ((p = strrchr($2, ':')) != NULL) {
2970				if (!strcmp(p+1, "network"))
2971					flags |= PFI_AFLAG_NETWORK;
2972				else if (!strcmp(p+1, "broadcast"))
2973					flags |= PFI_AFLAG_BROADCAST;
2974				else if (!strcmp(p+1, "peer"))
2975					flags |= PFI_AFLAG_PEER;
2976				else if (!strcmp(p+1, "0"))
2977					flags |= PFI_AFLAG_NOALIAS;
2978				else {
2979					yyerror("interface %s has bad modifier",
2980					    $2);
2981					free(op);
2982					YYERROR;
2983				}
2984				*p = '\0';
2985			}
2986			if (flags & (flags - 1) & PFI_AFLAG_MODEMASK) {
2987				free(op);
2988				yyerror("illegal combination of "
2989				    "interface modifiers");
2990				YYERROR;
2991			}
2992			$$ = calloc(1, sizeof(struct node_host));
2993			if ($$ == NULL)
2994				err(1, "address: calloc");
2995			$$->af = 0;
2996			set_ipmask($$, 128);
2997			$$->addr.type = PF_ADDR_DYNIFTL;
2998			$$->addr.iflags = flags;
2999			if (strlcpy($$->addr.v.ifname, $2,
3000			    sizeof($$->addr.v.ifname)) >=
3001			    sizeof($$->addr.v.ifname)) {
3002				free(op);
3003				free($$);
3004				yyerror("interface name too long");
3005				YYERROR;
3006			}
3007			free(op);
3008			$$->next = NULL;
3009			$$->tail = $$;
3010		}
3011		;
3012
3013portspec	: port_item			{ $$ = $1; }
3014		| '{' optnl port_list '}'	{ $$ = $3; }
3015		;
3016
3017port_list	: port_item optnl		{ $$ = $1; }
3018		| port_list comma port_item optnl	{
3019			$1->tail->next = $3;
3020			$1->tail = $3;
3021			$$ = $1;
3022		}
3023		;
3024
3025port_item	: portrange			{
3026			$$ = calloc(1, sizeof(struct node_port));
3027			if ($$ == NULL)
3028				err(1, "port_item: calloc");
3029			$$->port[0] = $1.a;
3030			$$->port[1] = $1.b;
3031			if ($1.t)
3032				$$->op = PF_OP_RRG;
3033			else
3034				$$->op = PF_OP_EQ;
3035			$$->next = NULL;
3036			$$->tail = $$;
3037		}
3038		| unaryop portrange	{
3039			if ($2.t) {
3040				yyerror("':' cannot be used with an other "
3041				    "port operator");
3042				YYERROR;
3043			}
3044			$$ = calloc(1, sizeof(struct node_port));
3045			if ($$ == NULL)
3046				err(1, "port_item: calloc");
3047			$$->port[0] = $2.a;
3048			$$->port[1] = $2.b;
3049			$$->op = $1;
3050			$$->next = NULL;
3051			$$->tail = $$;
3052		}
3053		| portrange PORTBINARY portrange	{
3054			if ($1.t || $3.t) {
3055				yyerror("':' cannot be used with an other "
3056				    "port operator");
3057				YYERROR;
3058			}
3059			$$ = calloc(1, sizeof(struct node_port));
3060			if ($$ == NULL)
3061				err(1, "port_item: calloc");
3062			$$->port[0] = $1.a;
3063			$$->port[1] = $3.a;
3064			$$->op = $2;
3065			$$->next = NULL;
3066			$$->tail = $$;
3067		}
3068		;
3069
3070portplain	: numberstring			{
3071			if (parseport($1, &$$, 0) == -1) {
3072				free($1);
3073				YYERROR;
3074			}
3075			free($1);
3076		}
3077		;
3078
3079portrange	: numberstring			{
3080			if (parseport($1, &$$, PPORT_RANGE) == -1) {
3081				free($1);
3082				YYERROR;
3083			}
3084			free($1);
3085		}
3086		;
3087
3088uids		: uid_item			{ $$ = $1; }
3089		| '{' optnl uid_list '}'	{ $$ = $3; }
3090		;
3091
3092uid_list	: uid_item optnl		{ $$ = $1; }
3093		| uid_list comma uid_item optnl	{
3094			$1->tail->next = $3;
3095			$1->tail = $3;
3096			$$ = $1;
3097		}
3098		;
3099
3100uid_item	: uid				{
3101			$$ = calloc(1, sizeof(struct node_uid));
3102			if ($$ == NULL)
3103				err(1, "uid_item: calloc");
3104			$$->uid[0] = $1;
3105			$$->uid[1] = $1;
3106			$$->op = PF_OP_EQ;
3107			$$->next = NULL;
3108			$$->tail = $$;
3109		}
3110		| unaryop uid			{
3111			if ($2 == UID_MAX && $1 != PF_OP_EQ && $1 != PF_OP_NE) {
3112				yyerror("user unknown requires operator = or "
3113				    "!=");
3114				YYERROR;
3115			}
3116			$$ = calloc(1, sizeof(struct node_uid));
3117			if ($$ == NULL)
3118				err(1, "uid_item: calloc");
3119			$$->uid[0] = $2;
3120			$$->uid[1] = $2;
3121			$$->op = $1;
3122			$$->next = NULL;
3123			$$->tail = $$;
3124		}
3125		| uid PORTBINARY uid		{
3126			if ($1 == UID_MAX || $3 == UID_MAX) {
3127				yyerror("user unknown requires operator = or "
3128				    "!=");
3129				YYERROR;
3130			}
3131			$$ = calloc(1, sizeof(struct node_uid));
3132			if ($$ == NULL)
3133				err(1, "uid_item: calloc");
3134			$$->uid[0] = $1;
3135			$$->uid[1] = $3;
3136			$$->op = $2;
3137			$$->next = NULL;
3138			$$->tail = $$;
3139		}
3140		;
3141
3142uid		: STRING			{
3143			if (!strcmp($1, "unknown"))
3144				$$ = UID_MAX;
3145			else {
3146				struct passwd	*pw;
3147
3148				if ((pw = getpwnam($1)) == NULL) {
3149					yyerror("unknown user %s", $1);
3150					free($1);
3151					YYERROR;
3152				}
3153				$$ = pw->pw_uid;
3154			}
3155			free($1);
3156		}
3157		| NUMBER			{
3158			if ($1 < 0 || $1 >= UID_MAX) {
3159				yyerror("illegal uid value %lu", $1);
3160				YYERROR;
3161			}
3162			$$ = $1;
3163		}
3164		;
3165
3166gids		: gid_item			{ $$ = $1; }
3167		| '{' optnl gid_list '}'	{ $$ = $3; }
3168		;
3169
3170gid_list	: gid_item optnl		{ $$ = $1; }
3171		| gid_list comma gid_item optnl	{
3172			$1->tail->next = $3;
3173			$1->tail = $3;
3174			$$ = $1;
3175		}
3176		;
3177
3178gid_item	: gid				{
3179			$$ = calloc(1, sizeof(struct node_gid));
3180			if ($$ == NULL)
3181				err(1, "gid_item: calloc");
3182			$$->gid[0] = $1;
3183			$$->gid[1] = $1;
3184			$$->op = PF_OP_EQ;
3185			$$->next = NULL;
3186			$$->tail = $$;
3187		}
3188		| unaryop gid			{
3189			if ($2 == GID_MAX && $1 != PF_OP_EQ && $1 != PF_OP_NE) {
3190				yyerror("group unknown requires operator = or "
3191				    "!=");
3192				YYERROR;
3193			}
3194			$$ = calloc(1, sizeof(struct node_gid));
3195			if ($$ == NULL)
3196				err(1, "gid_item: calloc");
3197			$$->gid[0] = $2;
3198			$$->gid[1] = $2;
3199			$$->op = $1;
3200			$$->next = NULL;
3201			$$->tail = $$;
3202		}
3203		| gid PORTBINARY gid		{
3204			if ($1 == GID_MAX || $3 == GID_MAX) {
3205				yyerror("group unknown requires operator = or "
3206				    "!=");
3207				YYERROR;
3208			}
3209			$$ = calloc(1, sizeof(struct node_gid));
3210			if ($$ == NULL)
3211				err(1, "gid_item: calloc");
3212			$$->gid[0] = $1;
3213			$$->gid[1] = $3;
3214			$$->op = $2;
3215			$$->next = NULL;
3216			$$->tail = $$;
3217		}
3218		;
3219
3220gid		: STRING			{
3221			if (!strcmp($1, "unknown"))
3222				$$ = GID_MAX;
3223			else {
3224				struct group	*grp;
3225
3226				if ((grp = getgrnam($1)) == NULL) {
3227					yyerror("unknown group %s", $1);
3228					free($1);
3229					YYERROR;
3230				}
3231				$$ = grp->gr_gid;
3232			}
3233			free($1);
3234		}
3235		| NUMBER			{
3236			if ($1 < 0 || $1 >= GID_MAX) {
3237				yyerror("illegal gid value %lu", $1);
3238				YYERROR;
3239			}
3240			$$ = $1;
3241		}
3242		;
3243
3244flag		: STRING			{
3245			int	f;
3246
3247			if ((f = parse_flags($1)) < 0) {
3248				yyerror("bad flags %s", $1);
3249				free($1);
3250				YYERROR;
3251			}
3252			free($1);
3253			$$.b1 = f;
3254		}
3255		;
3256
3257flags		: FLAGS flag '/' flag	{ $$.b1 = $2.b1; $$.b2 = $4.b1; }
3258		| FLAGS '/' flag	{ $$.b1 = 0; $$.b2 = $3.b1; }
3259		| FLAGS ANY		{ $$.b1 = 0; $$.b2 = 0; }
3260		;
3261
3262icmpspec	: ICMPTYPE icmp_item			{ $$ = $2; }
3263		| ICMPTYPE '{' optnl icmp_list '}'	{ $$ = $4; }
3264		| ICMP6TYPE icmp6_item			{ $$ = $2; }
3265		| ICMP6TYPE '{' optnl icmp6_list '}'	{ $$ = $4; }
3266		;
3267
3268icmp_list	: icmp_item optnl		{ $$ = $1; }
3269		| icmp_list comma icmp_item optnl {
3270			$1->tail->next = $3;
3271			$1->tail = $3;
3272			$$ = $1;
3273		}
3274		;
3275
3276icmp6_list	: icmp6_item optnl		{ $$ = $1; }
3277		| icmp6_list comma icmp6_item optnl {
3278			$1->tail->next = $3;
3279			$1->tail = $3;
3280			$$ = $1;
3281		}
3282		;
3283
3284icmp_item	: icmptype		{
3285			$$ = calloc(1, sizeof(struct node_icmp));
3286			if ($$ == NULL)
3287				err(1, "icmp_item: calloc");
3288			$$->type = $1;
3289			$$->code = 0;
3290			$$->proto = IPPROTO_ICMP;
3291			$$->next = NULL;
3292			$$->tail = $$;
3293		}
3294		| icmptype CODE STRING	{
3295			const struct icmpcodeent	*p;
3296
3297			if ((p = geticmpcodebyname($1-1, $3, AF_INET)) == NULL) {
3298				yyerror("unknown icmp-code %s", $3);
3299				free($3);
3300				YYERROR;
3301			}
3302
3303			free($3);
3304			$$ = calloc(1, sizeof(struct node_icmp));
3305			if ($$ == NULL)
3306				err(1, "icmp_item: calloc");
3307			$$->type = $1;
3308			$$->code = p->code + 1;
3309			$$->proto = IPPROTO_ICMP;
3310			$$->next = NULL;
3311			$$->tail = $$;
3312		}
3313		| icmptype CODE NUMBER	{
3314			if ($3 < 0 || $3 > 255) {
3315				yyerror("illegal icmp-code %lu", $3);
3316				YYERROR;
3317			}
3318			$$ = calloc(1, sizeof(struct node_icmp));
3319			if ($$ == NULL)
3320				err(1, "icmp_item: calloc");
3321			$$->type = $1;
3322			$$->code = $3 + 1;
3323			$$->proto = IPPROTO_ICMP;
3324			$$->next = NULL;
3325			$$->tail = $$;
3326		}
3327		;
3328
3329icmp6_item	: icmp6type		{
3330			$$ = calloc(1, sizeof(struct node_icmp));
3331			if ($$ == NULL)
3332				err(1, "icmp_item: calloc");
3333			$$->type = $1;
3334			$$->code = 0;
3335			$$->proto = IPPROTO_ICMPV6;
3336			$$->next = NULL;
3337			$$->tail = $$;
3338		}
3339		| icmp6type CODE STRING	{
3340			const struct icmpcodeent	*p;
3341
3342			if ((p = geticmpcodebyname($1-1, $3, AF_INET6)) == NULL) {
3343				yyerror("unknown icmp6-code %s", $3);
3344				free($3);
3345				YYERROR;
3346			}
3347			free($3);
3348
3349			$$ = calloc(1, sizeof(struct node_icmp));
3350			if ($$ == NULL)
3351				err(1, "icmp_item: calloc");
3352			$$->type = $1;
3353			$$->code = p->code + 1;
3354			$$->proto = IPPROTO_ICMPV6;
3355			$$->next = NULL;
3356			$$->tail = $$;
3357		}
3358		| icmp6type CODE NUMBER	{
3359			if ($3 < 0 || $3 > 255) {
3360				yyerror("illegal icmp-code %lu", $3);
3361				YYERROR;
3362			}
3363			$$ = calloc(1, sizeof(struct node_icmp));
3364			if ($$ == NULL)
3365				err(1, "icmp_item: calloc");
3366			$$->type = $1;
3367			$$->code = $3 + 1;
3368			$$->proto = IPPROTO_ICMPV6;
3369			$$->next = NULL;
3370			$$->tail = $$;
3371		}
3372		;
3373
3374icmptype	: STRING			{
3375			const struct icmptypeent	*p;
3376
3377			if ((p = geticmptypebyname($1, AF_INET)) == NULL) {
3378				yyerror("unknown icmp-type %s", $1);
3379				free($1);
3380				YYERROR;
3381			}
3382			$$ = p->type + 1;
3383			free($1);
3384		}
3385		| NUMBER			{
3386			if ($1 < 0 || $1 > 255) {
3387				yyerror("illegal icmp-type %lu", $1);
3388				YYERROR;
3389			}
3390			$$ = $1 + 1;
3391		}
3392		;
3393
3394icmp6type	: STRING			{
3395			const struct icmptypeent	*p;
3396
3397			if ((p = geticmptypebyname($1, AF_INET6)) ==
3398			    NULL) {
3399				yyerror("unknown icmp6-type %s", $1);
3400				free($1);
3401				YYERROR;
3402			}
3403			$$ = p->type + 1;
3404			free($1);
3405		}
3406		| NUMBER			{
3407			if ($1 < 0 || $1 > 255) {
3408				yyerror("illegal icmp6-type %lu", $1);
3409				YYERROR;
3410			}
3411			$$ = $1 + 1;
3412		}
3413		;
3414
3415tos	: STRING			{
3416			int val;
3417			if (map_tos($1, &val))
3418				$$ = val;
3419			else if ($1[0] == '0' && $1[1] == 'x')
3420				$$ = strtoul($1, NULL, 16);
3421			else
3422				$$ = 256;		/* flag bad argument */
3423			if ($$ > 255) {
3424				yyerror("illegal tos value %s", $1);
3425				free($1);
3426				YYERROR;
3427			}
3428			free($1);
3429		}
3430		| NUMBER			{
3431			$$ = $1;
3432			if ($$ > 255) {
3433				yyerror("illegal tos value %lu", $1);
3434				YYERROR;
3435			}
3436		}
3437		;
3438
3439sourcetrack	: /* empty */		{ $$ = PF_SRCTRACK; }
3440		| GLOBAL		{ $$ = PF_SRCTRACK_GLOBAL; }
3441		| RULE			{ $$ = PF_SRCTRACK_RULE; }
3442		;
3443
3444statelock	: IFBOUND {
3445			$$ = PFRULE_IFBOUND;
3446		}
3447		| FLOATING {
3448			$$ = 0;
3449		}
3450		;
3451
3452keep		: NO STATE			{
3453			$$.action = 0;
3454			$$.options = NULL;
3455		}
3456		| KEEP STATE state_opt_spec	{
3457			$$.action = PF_STATE_NORMAL;
3458			$$.options = $3;
3459		}
3460		| MODULATE STATE state_opt_spec {
3461			$$.action = PF_STATE_MODULATE;
3462			$$.options = $3;
3463		}
3464		| SYNPROXY STATE state_opt_spec {
3465			$$.action = PF_STATE_SYNPROXY;
3466			$$.options = $3;
3467		}
3468		;
3469
3470flush		: /* empty */			{ $$ = 0; }
3471		| FLUSH				{ $$ = PF_FLUSH; }
3472		| FLUSH GLOBAL			{
3473			$$ = PF_FLUSH | PF_FLUSH_GLOBAL;
3474		}
3475		;
3476
3477state_opt_spec	: '(' state_opt_list ')'	{ $$ = $2; }
3478		| /* empty */			{ $$ = NULL; }
3479		;
3480
3481state_opt_list	: state_opt_item		{ $$ = $1; }
3482		| state_opt_list comma state_opt_item {
3483			$1->tail->next = $3;
3484			$1->tail = $3;
3485			$$ = $1;
3486		}
3487		;
3488
3489state_opt_item	: MAXIMUM NUMBER		{
3490			if ($2 < 0 || $2 > UINT_MAX) {
3491				yyerror("only positive values permitted");
3492				YYERROR;
3493			}
3494			$$ = calloc(1, sizeof(struct node_state_opt));
3495			if ($$ == NULL)
3496				err(1, "state_opt_item: calloc");
3497			$$->type = PF_STATE_OPT_MAX;
3498			$$->data.max_states = $2;
3499			$$->next = NULL;
3500			$$->tail = $$;
3501		}
3502		| NOSYNC				{
3503			$$ = calloc(1, sizeof(struct node_state_opt));
3504			if ($$ == NULL)
3505				err(1, "state_opt_item: calloc");
3506			$$->type = PF_STATE_OPT_NOSYNC;
3507			$$->next = NULL;
3508			$$->tail = $$;
3509		}
3510		| MAXSRCSTATES NUMBER			{
3511			if ($2 < 0 || $2 > UINT_MAX) {
3512				yyerror("only positive values permitted");
3513				YYERROR;
3514			}
3515			$$ = calloc(1, sizeof(struct node_state_opt));
3516			if ($$ == NULL)
3517				err(1, "state_opt_item: calloc");
3518			$$->type = PF_STATE_OPT_MAX_SRC_STATES;
3519			$$->data.max_src_states = $2;
3520			$$->next = NULL;
3521			$$->tail = $$;
3522		}
3523		| MAXSRCCONN NUMBER			{
3524			if ($2 < 0 || $2 > UINT_MAX) {
3525				yyerror("only positive values permitted");
3526				YYERROR;
3527			}
3528			$$ = calloc(1, sizeof(struct node_state_opt));
3529			if ($$ == NULL)
3530				err(1, "state_opt_item: calloc");
3531			$$->type = PF_STATE_OPT_MAX_SRC_CONN;
3532			$$->data.max_src_conn = $2;
3533			$$->next = NULL;
3534			$$->tail = $$;
3535		}
3536		| MAXSRCCONNRATE NUMBER '/' NUMBER	{
3537			if ($2 < 0 || $2 > UINT_MAX ||
3538			    $4 < 0 || $4 > UINT_MAX) {
3539				yyerror("only positive values permitted");
3540				YYERROR;
3541			}
3542			$$ = calloc(1, sizeof(struct node_state_opt));
3543			if ($$ == NULL)
3544				err(1, "state_opt_item: calloc");
3545			$$->type = PF_STATE_OPT_MAX_SRC_CONN_RATE;
3546			$$->data.max_src_conn_rate.limit = $2;
3547			$$->data.max_src_conn_rate.seconds = $4;
3548			$$->next = NULL;
3549			$$->tail = $$;
3550		}
3551		| OVERLOAD '<' STRING '>' flush		{
3552			if (strlen($3) >= PF_TABLE_NAME_SIZE) {
3553				yyerror("table name '%s' too long", $3);
3554				free($3);
3555				YYERROR;
3556			}
3557			$$ = calloc(1, sizeof(struct node_state_opt));
3558			if ($$ == NULL)
3559				err(1, "state_opt_item: calloc");
3560			if (strlcpy($$->data.overload.tblname, $3,
3561			    PF_TABLE_NAME_SIZE) >= PF_TABLE_NAME_SIZE)
3562				errx(1, "state_opt_item: strlcpy");
3563			free($3);
3564			$$->type = PF_STATE_OPT_OVERLOAD;
3565			$$->data.overload.flush = $5;
3566			$$->next = NULL;
3567			$$->tail = $$;
3568		}
3569		| MAXSRCNODES NUMBER			{
3570			if ($2 < 0 || $2 > UINT_MAX) {
3571				yyerror("only positive values permitted");
3572				YYERROR;
3573			}
3574			$$ = calloc(1, sizeof(struct node_state_opt));
3575			if ($$ == NULL)
3576				err(1, "state_opt_item: calloc");
3577			$$->type = PF_STATE_OPT_MAX_SRC_NODES;
3578			$$->data.max_src_nodes = $2;
3579			$$->next = NULL;
3580			$$->tail = $$;
3581		}
3582		| SOURCETRACK sourcetrack {
3583			$$ = calloc(1, sizeof(struct node_state_opt));
3584			if ($$ == NULL)
3585				err(1, "state_opt_item: calloc");
3586			$$->type = PF_STATE_OPT_SRCTRACK;
3587			$$->data.src_track = $2;
3588			$$->next = NULL;
3589			$$->tail = $$;
3590		}
3591		| statelock {
3592			$$ = calloc(1, sizeof(struct node_state_opt));
3593			if ($$ == NULL)
3594				err(1, "state_opt_item: calloc");
3595			$$->type = PF_STATE_OPT_STATELOCK;
3596			$$->data.statelock = $1;
3597			$$->next = NULL;
3598			$$->tail = $$;
3599		}
3600		| SLOPPY {
3601			$$ = calloc(1, sizeof(struct node_state_opt));
3602			if ($$ == NULL)
3603				err(1, "state_opt_item: calloc");
3604			$$->type = PF_STATE_OPT_SLOPPY;
3605			$$->next = NULL;
3606			$$->tail = $$;
3607		}
3608		| PFLOW {
3609			$$ = calloc(1, sizeof(struct node_state_opt));
3610			if ($$ == NULL)
3611				err(1, "state_opt_item: calloc");
3612			$$->type = PF_STATE_OPT_PFLOW;
3613			$$->next = NULL;
3614			$$->tail = $$;
3615		}
3616		| STRING NUMBER			{
3617			int	i;
3618
3619			if ($2 < 0 || $2 > UINT_MAX) {
3620				yyerror("only positive values permitted");
3621				YYERROR;
3622			}
3623			for (i = 0; pf_timeouts[i].name &&
3624			    strcmp(pf_timeouts[i].name, $1); ++i)
3625				;	/* nothing */
3626			if (!pf_timeouts[i].name) {
3627				yyerror("illegal timeout name %s", $1);
3628				free($1);
3629				YYERROR;
3630			}
3631			if (strchr(pf_timeouts[i].name, '.') == NULL) {
3632				yyerror("illegal state timeout %s", $1);
3633				free($1);
3634				YYERROR;
3635			}
3636			free($1);
3637			$$ = calloc(1, sizeof(struct node_state_opt));
3638			if ($$ == NULL)
3639				err(1, "state_opt_item: calloc");
3640			$$->type = PF_STATE_OPT_TIMEOUT;
3641			$$->data.timeout.number = pf_timeouts[i].timeout;
3642			$$->data.timeout.seconds = $2;
3643			$$->next = NULL;
3644			$$->tail = $$;
3645		}
3646		;
3647
3648label		: STRING			{
3649			$$ = $1;
3650		}
3651		;
3652
3653qname		: STRING				{
3654			$$.qname = $1;
3655			$$.pqname = NULL;
3656		}
3657		| '(' STRING ')'			{
3658			$$.qname = $2;
3659			$$.pqname = NULL;
3660		}
3661		| '(' STRING comma STRING ')'	{
3662			$$.qname = $2;
3663			$$.pqname = $4;
3664		}
3665		;
3666
3667portstar	: numberstring			{
3668			if (parseport($1, &$$, PPORT_RANGE|PPORT_STAR) == -1) {
3669				free($1);
3670				YYERROR;
3671			}
3672			free($1);
3673		}
3674		;
3675
3676redirspec	: host optweight		{
3677			if ($2 > 0) {
3678				struct node_host	*n;
3679				for (n = $1; n != NULL; n = n->next)
3680					n->weight = $2;
3681			}
3682			$$ = $1;
3683		}
3684		| '{' optnl redir_host_list '}'	{ $$ = $3; }
3685		;
3686
3687redir_host_list	: host optweight optnl			{
3688			if ($1->addr.type != PF_ADDR_ADDRMASK) {
3689				free($1);
3690				yyerror("only addresses can be listed for"
3691				    "redirection pools ");
3692				YYERROR;
3693			}
3694			if ($2 > 0) {
3695				struct node_host	*n;
3696				for (n = $1; n != NULL; n = n->next)
3697					n->weight = $2;
3698			}
3699			$$ = $1;
3700		}
3701		| redir_host_list comma host optweight optnl {
3702			$1->tail->next = $3;
3703			$1->tail = $3->tail;
3704			if ($4 > 0) {
3705				struct node_host	*n;
3706				for (n = $3; n != NULL; n = n->next)
3707					n->weight = $4;
3708			}
3709			$$ = $1;
3710		}
3711		;
3712
3713redirpool	: redirspec		{
3714			$$ = calloc(1, sizeof(struct redirection));
3715			if ($$ == NULL)
3716				err(1, "redirection: calloc");
3717			$$->host = $1;
3718			$$->rport.a = $$->rport.b = $$->rport.t = 0;
3719		}
3720		| redirspec PORT portstar	{
3721			$$ = calloc(1, sizeof(struct redirection));
3722			if ($$ == NULL)
3723				err(1, "redirection: calloc");
3724			$$->host = $1;
3725			$$->rport = $3;
3726		}
3727		;
3728
3729hashkey		: /* empty */
3730		{
3731			$$ = calloc(1, sizeof(struct pf_poolhashkey));
3732			if ($$ == NULL)
3733				err(1, "hashkey: calloc");
3734			$$->key32[0] = arc4random();
3735			$$->key32[1] = arc4random();
3736			$$->key32[2] = arc4random();
3737			$$->key32[3] = arc4random();
3738		}
3739		| string
3740		{
3741			if (!strncmp($1, "0x", 2)) {
3742				if (strlen($1) != 34) {
3743					free($1);
3744					yyerror("hex key must be 128 bits "
3745						"(32 hex digits) long");
3746					YYERROR;
3747				}
3748				$$ = calloc(1, sizeof(struct pf_poolhashkey));
3749				if ($$ == NULL)
3750					err(1, "hashkey: calloc");
3751
3752				if (sscanf($1, "0x%8x%8x%8x%8x",
3753				    &$$->key32[0], &$$->key32[1],
3754				    &$$->key32[2], &$$->key32[3]) != 4) {
3755					free($$);
3756					free($1);
3757					yyerror("invalid hex key");
3758					YYERROR;
3759				}
3760			} else {
3761				MD5_CTX	context;
3762
3763				$$ = calloc(1, sizeof(struct pf_poolhashkey));
3764				if ($$ == NULL)
3765					err(1, "hashkey: calloc");
3766				MD5Init(&context);
3767				MD5Update(&context, (unsigned char *)$1,
3768				    strlen($1));
3769				MD5Final((unsigned char *)$$, &context);
3770				HTONL($$->key32[0]);
3771				HTONL($$->key32[1]);
3772				HTONL($$->key32[2]);
3773				HTONL($$->key32[3]);
3774			}
3775			free($1);
3776		}
3777		;
3778
3779pool_opts	:	{ bzero(&pool_opts, sizeof pool_opts); }
3780		    pool_opts_l
3781			{ $$ = pool_opts; }
3782		| /* empty */	{
3783			bzero(&pool_opts, sizeof pool_opts);
3784			$$ = pool_opts;
3785		}
3786		;
3787
3788pool_opts_l	: pool_opts_l pool_opt
3789		| pool_opt
3790		;
3791
3792pool_opt	: BITMASK	{
3793			if (pool_opts.type) {
3794				yyerror("pool type cannot be redefined");
3795				YYERROR;
3796			}
3797			pool_opts.type =  PF_POOL_BITMASK;
3798		}
3799		| RANDOM	{
3800			if (pool_opts.type) {
3801				yyerror("pool type cannot be redefined");
3802				YYERROR;
3803			}
3804			pool_opts.type = PF_POOL_RANDOM;
3805		}
3806		| SOURCEHASH hashkey {
3807			if (pool_opts.type) {
3808				yyerror("pool type cannot be redefined");
3809				YYERROR;
3810			}
3811			pool_opts.type = PF_POOL_SRCHASH;
3812			pool_opts.key = $2;
3813		}
3814		| ROUNDROBIN	{
3815			if (pool_opts.type) {
3816				yyerror("pool type cannot be redefined");
3817				YYERROR;
3818			}
3819			pool_opts.type = PF_POOL_ROUNDROBIN;
3820		}
3821		| LEASTSTATES	{
3822			if (pool_opts.type) {
3823				yyerror("pool type cannot be redefined");
3824				YYERROR;
3825			}
3826			pool_opts.type = PF_POOL_LEASTSTATES;
3827		}
3828		| STATICPORT	{
3829			if (pool_opts.staticport) {
3830				yyerror("static-port cannot be redefined");
3831				YYERROR;
3832			}
3833			pool_opts.staticport = 1;
3834		}
3835		| STICKYADDRESS	{
3836			if (filter_opts.marker & POM_STICKYADDRESS) {
3837				yyerror("sticky-address cannot be redefined");
3838				YYERROR;
3839			}
3840			pool_opts.marker |= POM_STICKYADDRESS;
3841			pool_opts.opts |= PF_POOL_STICKYADDR;
3842		}
3843		;
3844
3845route_host	: STRING			{
3846			/* try to find @if0 address specs */
3847			if (strrchr($1, '@') != NULL) {
3848				if (($$ = host($1)) == NULL)	{
3849					yyerror("invalid host for route spec");
3850					YYERROR;
3851				}
3852				free($1);
3853			} else {
3854				$$ = calloc(1, sizeof(struct node_host));
3855				if ($$ == NULL)
3856					err(1, "route_host: calloc");
3857				$$->ifname = $1;
3858				$$->addr.type = PF_ADDR_NONE;
3859				set_ipmask($$, 128);
3860				$$->next = NULL;
3861				$$->tail = $$;
3862			}
3863		}
3864		| STRING '/' STRING 		{
3865			char	*buf;
3866
3867			if (asprintf(&buf, "%s/%s", $1, $3) == -1)
3868				err(1, "host: asprintf");
3869			free($1);
3870			if (($$ = host(buf)) == NULL)	{
3871				/* error. "any" is handled elsewhere */
3872				free(buf);
3873				yyerror("could not parse host specification");
3874				YYERROR;
3875			}
3876			free(buf);
3877		}
3878		| '<' STRING '>'	{
3879			if (strlen($2) >= PF_TABLE_NAME_SIZE) {
3880				yyerror("table name '%s' too long", $2);
3881				free($2);
3882				YYERROR;
3883			}
3884			$$ = calloc(1, sizeof(struct node_host));
3885			if ($$ == NULL)
3886				err(1, "host: calloc");
3887			$$->addr.type = PF_ADDR_TABLE;
3888			if (strlcpy($$->addr.v.tblname, $2,
3889			    sizeof($$->addr.v.tblname)) >=
3890			    sizeof($$->addr.v.tblname))
3891				errx(1, "host: strlcpy");
3892			free($2);
3893			$$->next = NULL;
3894			$$->tail = $$;
3895		}
3896		| dynaddr '/' NUMBER		{
3897			struct node_host	*n;
3898
3899			if ($3 < 0 || $3 > 128) {
3900				yyerror("bit number too big");
3901				YYERROR;
3902			}
3903			$$ = $1;
3904			for (n = $1; n != NULL; n = n->next)
3905				set_ipmask(n, $3);
3906		}
3907		| '(' STRING host ')'		{
3908			struct node_host	*n;
3909
3910			$$ = $3;
3911			/* XXX check masks, only full mask should be allowed */
3912			for (n = $3; n != NULL; n = n->next) {
3913				if ($$->ifname) {
3914					yyerror("cannot specify interface twice "
3915					    "in route spec");
3916					YYERROR;
3917				}
3918				if (($$->ifname = strdup($2)) == NULL)
3919					errx(1, "host: strdup");
3920			}
3921			free($2);
3922		}
3923		;
3924
3925route_host_list	: route_host optweight optnl		{
3926			if ($2 > 0) {
3927				struct node_host	*n;
3928				for (n = $1; n != NULL; n = n->next)
3929					n->weight = $2;
3930			}
3931			$$ = $1;
3932		}
3933		| route_host_list comma route_host optweight optnl {
3934			if ($1->af == 0)
3935				$1->af = $3->af;
3936			if ($1->af != $3->af) {
3937				yyerror("all pool addresses must be in the "
3938				    "same address family");
3939				YYERROR;
3940			}
3941			$1->tail->next = $3;
3942			$1->tail = $3->tail;
3943			if ($4 > 0) {
3944				struct node_host	*n;
3945				for (n = $3; n != NULL; n = n->next)
3946					n->weight = $4;
3947			}
3948			$$ = $1;
3949		}
3950		;
3951
3952routespec	: route_host optweight			{
3953			if ($2 > 0) {
3954				struct node_host	*n;
3955				for (n = $1; n != NULL; n = n->next)
3956					n->weight = $2;
3957			}
3958			$$ = $1;
3959		}
3960		| '{' optnl route_host_list '}'	{ $$ = $3; }
3961		;
3962
3963timeout_spec	: STRING NUMBER
3964		{
3965			if ($2 < 0 || $2 > UINT_MAX) {
3966				yyerror("only positive values permitted");
3967				YYERROR;
3968			}
3969			if (pfctl_set_timeout(pf, $1, $2, 0) != 0) {
3970				yyerror("unknown timeout %s", $1);
3971				free($1);
3972				YYERROR;
3973			}
3974			free($1);
3975		}
3976		;
3977
3978timeout_list	: timeout_list comma timeout_spec optnl
3979		| timeout_spec optnl
3980		;
3981
3982limit_spec	: STRING NUMBER
3983		{
3984			if ($2 < 0 || $2 > UINT_MAX) {
3985				yyerror("only positive values permitted");
3986				YYERROR;
3987			}
3988			if (pfctl_set_limit(pf, $1, $2) != 0) {
3989				yyerror("unable to set limit %s %u", $1, $2);
3990				free($1);
3991				YYERROR;
3992			}
3993			free($1);
3994		}
3995		;
3996
3997limit_list	: limit_list comma limit_spec optnl
3998		| limit_spec optnl
3999		;
4000
4001comma		: ','
4002		| /* empty */
4003		;
4004
4005yesno		: NO			{ $$ = 0; }
4006		| STRING		{
4007			if (!strcmp($1, "yes"))
4008				$$ = 1;
4009			else {
4010				yyerror("invalid value '%s', expected 'yes' "
4011				    "or 'no'", $1);
4012				free($1);
4013				YYERROR;
4014			}
4015			free($1);
4016		}
4017		;
4018
4019unaryop		: '='		{ $$ = PF_OP_EQ; }
4020		| NE		{ $$ = PF_OP_NE; }
4021		| LE		{ $$ = PF_OP_LE; }
4022		| '<'		{ $$ = PF_OP_LT; }
4023		| GE		{ $$ = PF_OP_GE; }
4024		| '>'		{ $$ = PF_OP_GT; }
4025		;
4026
4027%%
4028
4029int
4030yyerror(const char *fmt, ...)
4031{
4032	va_list		 ap;
4033
4034	file->errors++;
4035	va_start(ap, fmt);
4036	fprintf(stderr, "%s:%d: ", file->name, yylval.lineno);
4037	vfprintf(stderr, fmt, ap);
4038	fprintf(stderr, "\n");
4039	va_end(ap);
4040	return (0);
4041}
4042
4043int
4044disallow_table(struct node_host *h, const char *fmt)
4045{
4046	for (; h != NULL; h = h->next)
4047		if (h->addr.type == PF_ADDR_TABLE) {
4048			yyerror(fmt, h->addr.v.tblname);
4049			return (1);
4050		}
4051	return (0);
4052}
4053
4054int
4055disallow_urpf_failed(struct node_host *h, const char *fmt)
4056{
4057	for (; h != NULL; h = h->next)
4058		if (h->addr.type == PF_ADDR_URPFFAILED) {
4059			yyerror(fmt);
4060			return (1);
4061		}
4062	return (0);
4063}
4064
4065int
4066disallow_alias(struct node_host *h, const char *fmt)
4067{
4068	for (; h != NULL; h = h->next)
4069		if (DYNIF_MULTIADDR(h->addr)) {
4070			yyerror(fmt, h->addr.v.tblname);
4071			return (1);
4072		}
4073	return (0);
4074}
4075
4076int
4077rule_consistent(struct pf_rule *r, int anchor_call)
4078{
4079	int	problems = 0;
4080
4081	if (r->proto != IPPROTO_TCP && r->os_fingerprint != PF_OSFP_ANY) {
4082		yyerror("os only applies to tcp");
4083		problems++;
4084	}
4085	if (r->proto != IPPROTO_TCP && r->proto != IPPROTO_UDP &&
4086	    (r->src.port_op || r->dst.port_op)) {
4087		yyerror("port only applies to tcp/udp");
4088		problems++;
4089	}
4090	if (r->proto != IPPROTO_TCP && r->proto != IPPROTO_UDP &&
4091	    r->uid.op) {
4092		yyerror("user only applies to tcp/udp");
4093		problems++;
4094	}
4095	if (r->proto != IPPROTO_TCP && r->proto != IPPROTO_UDP &&
4096	    r->gid.op) {
4097		yyerror("group only applies to tcp/udp");
4098		problems++;
4099	}
4100	if (r->proto != IPPROTO_ICMP && r->proto != IPPROTO_ICMPV6 &&
4101	    (r->type || r->code)) {
4102		yyerror("icmp-type/code only applies to icmp");
4103		problems++;
4104	}
4105	if (!r->af && (r->type || r->code)) {
4106		yyerror("must indicate address family with icmp-type/code");
4107		problems++;
4108	}
4109	if (r->rule_flag & PFRULE_AFTO && r->af == r->naf) {
4110		yyerror("must indicate different address family with af-to");
4111		problems++;
4112	}
4113	if (r->overload_tblname[0] &&
4114	    r->max_src_conn == 0 && r->max_src_conn_rate.seconds == 0) {
4115		yyerror("'overload' requires 'max-src-conn' "
4116		    "or 'max-src-conn-rate'");
4117		problems++;
4118	}
4119	if ((r->proto == IPPROTO_ICMP && r->af == AF_INET6) ||
4120	    (r->proto == IPPROTO_ICMPV6 && r->af == AF_INET)) {
4121		yyerror("proto %s doesn't match address family %s",
4122		    r->proto == IPPROTO_ICMP ? "icmp" : "icmp6",
4123		    r->af == AF_INET ? "inet" : "inet6");
4124		problems++;
4125	}
4126	if (r->allow_opts && r->action != PF_PASS) {
4127		yyerror("allow-opts can only be specified for pass rules");
4128		problems++;
4129	}
4130	if (r->rule_flag & PFRULE_FRAGMENT && (r->src.port_op ||
4131	    r->dst.port_op || r->flagset || r->type || r->code)) {
4132		yyerror("fragments can be filtered only on IP header fields");
4133		problems++;
4134	}
4135	if (r->rule_flag & PFRULE_RETURNRST && r->proto != IPPROTO_TCP) {
4136		yyerror("return-rst can only be applied to TCP rules");
4137		problems++;
4138	}
4139	if (r->max_src_nodes && !(r->rule_flag & PFRULE_RULESRCTRACK)) {
4140		yyerror("max-src-nodes requires 'source-track rule'");
4141		problems++;
4142	}
4143	if (r->action != PF_PASS && r->keep_state) {
4144		yyerror("keep state is great, but only for pass rules");
4145		problems++;
4146	}
4147	if (r->rule_flag & PFRULE_STATESLOPPY &&
4148	    (r->keep_state == PF_STATE_MODULATE ||
4149	    r->keep_state == PF_STATE_SYNPROXY)) {
4150		yyerror("sloppy state matching cannot be used with "
4151		    "synproxy state or modulate state");
4152		problems++;
4153	}
4154	if ((r->nat.addr.type != PF_ADDR_NONE ||
4155	    r->rdr.addr.type != PF_ADDR_NONE) &&
4156	    r->action != PF_MATCH && !r->keep_state) {
4157		yyerror("nat-to and rdr-to require keep state");
4158		problems++;
4159	}
4160	if (r->direction == PF_INOUT && (r->nat.addr.type != PF_ADDR_NONE ||
4161	    r->rdr.addr.type != PF_ADDR_NONE)) {
4162		yyerror("nat-to and rdr-to require a direction");
4163		problems++;
4164	}
4165	if (r->af == AF_INET6 && (r->scrub_flags &
4166	    (PFSTATE_NODF|PFSTATE_RANDOMID))) {
4167		yyerror("address family inet6 does not support scrub options "
4168		    "no-df, random-id");
4169		problems++;
4170	}
4171
4172	/* match rules rules */
4173	if (r->action == PF_MATCH) {
4174		if (r->divert.port) {
4175			yyerror("divert is not supported on match rules");
4176			problems++;
4177		}
4178		if (r->divert_packet.port) {
4179			yyerror("divert is not supported on match rules");
4180			problems++;
4181		}
4182		if (r->rt) {
4183			yyerror("route-to, reply-to and dup-to "
4184			   "must not be used on match rules");
4185			problems++;
4186		}
4187		if (r->rule_flag & PFRULE_AFTO) {
4188			yyerror("af-to is not supported on match rules");
4189			problems++;
4190		}
4191	}
4192	return (-problems);
4193}
4194
4195int
4196process_tabledef(char *name, struct table_opts *opts)
4197{
4198	struct pfr_buffer	 ab;
4199	struct node_tinit	*ti;
4200
4201	bzero(&ab, sizeof(ab));
4202	ab.pfrb_type = PFRB_ADDRS;
4203	SIMPLEQ_FOREACH(ti, &opts->init_nodes, entries) {
4204		if (ti->file)
4205			if (pfr_buf_load(&ab, ti->file, 0)) {
4206				if (errno)
4207					yyerror("cannot load \"%s\": %s",
4208					    ti->file, strerror(errno));
4209				else
4210					yyerror("file \"%s\" contains bad data",
4211					    ti->file);
4212				goto _error;
4213			}
4214		if (ti->host)
4215			if (append_addr_host(&ab, ti->host, 0, 0)) {
4216				yyerror("cannot create address buffer: %s",
4217				    strerror(errno));
4218				goto _error;
4219			}
4220	}
4221	if (pf->opts & PF_OPT_VERBOSE)
4222		print_tabledef(name, opts->flags, opts->init_addr,
4223		    &opts->init_nodes);
4224	if (!(pf->opts & PF_OPT_NOACTION) &&
4225	    pfctl_define_table(name, opts->flags, opts->init_addr,
4226	    pf->anchor->name, &ab, pf->anchor->ruleset.tticket)) {
4227		yyerror("cannot define table %s: %s", name,
4228		    pfr_strerror(errno));
4229		goto _error;
4230	}
4231	pf->tdirty = 1;
4232	pfr_buf_clear(&ab);
4233	return (0);
4234_error:
4235	pfr_buf_clear(&ab);
4236	return (-1);
4237}
4238
4239struct keywords {
4240	const char	*k_name;
4241	int		 k_val;
4242};
4243
4244/* macro gore, but you should've seen the prior indentation nightmare... */
4245
4246#define FREE_LIST(T,r) \
4247	do { \
4248		T *p, *node = r; \
4249		while (node != NULL) { \
4250			p = node; \
4251			node = node->next; \
4252			free(p); \
4253		} \
4254	} while (0)
4255
4256#define LOOP_THROUGH(T,n,r,C) \
4257	do { \
4258		T *n; \
4259		if (r == NULL) { \
4260			r = calloc(1, sizeof(T)); \
4261			if (r == NULL) \
4262				err(1, "LOOP: calloc"); \
4263			r->next = NULL; \
4264		} \
4265		n = r; \
4266		while (n != NULL) { \
4267			do { \
4268				C; \
4269			} while (0); \
4270			n = n->next; \
4271		} \
4272	} while (0)
4273
4274void
4275expand_label_str(char *label, size_t len, const char *srch, const char *repl)
4276{
4277	char *tmp;
4278	char *p, *q;
4279
4280	if ((tmp = calloc(1, len)) == NULL)
4281		err(1, "expand_label_str: calloc");
4282	p = q = label;
4283	while ((q = strstr(p, srch)) != NULL) {
4284		*q = '\0';
4285		if ((strlcat(tmp, p, len) >= len) ||
4286		    (strlcat(tmp, repl, len) >= len))
4287			errx(1, "expand_label: label too long");
4288		q += strlen(srch);
4289		p = q;
4290	}
4291	if (strlcat(tmp, p, len) >= len)
4292		errx(1, "expand_label: label too long");
4293	strlcpy(label, tmp, len);	/* always fits */
4294	free(tmp);
4295}
4296
4297void
4298expand_label_if(const char *name, char *label, size_t len, const char *ifname)
4299{
4300	if (strstr(label, name) != NULL) {
4301		if (!*ifname)
4302			expand_label_str(label, len, name, "any");
4303		else
4304			expand_label_str(label, len, name, ifname);
4305	}
4306}
4307
4308void
4309expand_label_addr(const char *name, char *label, size_t len, sa_family_t af,
4310    struct node_host *h)
4311{
4312	char tmp[64], tmp_not[66];
4313
4314	if (strstr(label, name) != NULL) {
4315		switch (h->addr.type) {
4316		case PF_ADDR_DYNIFTL:
4317			snprintf(tmp, sizeof(tmp), "(%s)", h->addr.v.ifname);
4318			break;
4319		case PF_ADDR_TABLE:
4320			snprintf(tmp, sizeof(tmp), "<%s>", h->addr.v.tblname);
4321			break;
4322		case PF_ADDR_NOROUTE:
4323			snprintf(tmp, sizeof(tmp), "no-route");
4324			break;
4325		case PF_ADDR_URPFFAILED:
4326			snprintf(tmp, sizeof(tmp), "urpf-failed");
4327			break;
4328		case PF_ADDR_ADDRMASK:
4329			if (!af || (PF_AZERO(&h->addr.v.a.addr, af) &&
4330			    PF_AZERO(&h->addr.v.a.mask, af)))
4331				snprintf(tmp, sizeof(tmp), "any");
4332			else {
4333				char	a[48];
4334				int	bits;
4335
4336				if (inet_ntop(af, &h->addr.v.a.addr, a,
4337				    sizeof(a)) == NULL)
4338					snprintf(tmp, sizeof(tmp), "?");
4339				else {
4340					bits = unmask(&h->addr.v.a.mask, af);
4341					if ((af == AF_INET && bits < 32) ||
4342					    (af == AF_INET6 && bits < 128))
4343						snprintf(tmp, sizeof(tmp),
4344						    "%s/%d", a, bits);
4345					else
4346						snprintf(tmp, sizeof(tmp),
4347						    "%s", a);
4348				}
4349			}
4350			break;
4351		default:
4352			snprintf(tmp, sizeof(tmp), "?");
4353			break;
4354		}
4355
4356		if (h->not) {
4357			snprintf(tmp_not, sizeof(tmp_not), "! %s", tmp);
4358			expand_label_str(label, len, name, tmp_not);
4359		} else
4360			expand_label_str(label, len, name, tmp);
4361	}
4362}
4363
4364void
4365expand_label_port(const char *name, char *label, size_t len,
4366    struct node_port *port)
4367{
4368	char	 a1[6], a2[6], op[13] = "";
4369
4370	if (strstr(label, name) != NULL) {
4371		snprintf(a1, sizeof(a1), "%u", ntohs(port->port[0]));
4372		snprintf(a2, sizeof(a2), "%u", ntohs(port->port[1]));
4373		if (!port->op)
4374			;
4375		else if (port->op == PF_OP_IRG)
4376			snprintf(op, sizeof(op), "%s><%s", a1, a2);
4377		else if (port->op == PF_OP_XRG)
4378			snprintf(op, sizeof(op), "%s<>%s", a1, a2);
4379		else if (port->op == PF_OP_EQ)
4380			snprintf(op, sizeof(op), "%s", a1);
4381		else if (port->op == PF_OP_NE)
4382			snprintf(op, sizeof(op), "!=%s", a1);
4383		else if (port->op == PF_OP_LT)
4384			snprintf(op, sizeof(op), "<%s", a1);
4385		else if (port->op == PF_OP_LE)
4386			snprintf(op, sizeof(op), "<=%s", a1);
4387		else if (port->op == PF_OP_GT)
4388			snprintf(op, sizeof(op), ">%s", a1);
4389		else if (port->op == PF_OP_GE)
4390			snprintf(op, sizeof(op), ">=%s", a1);
4391		expand_label_str(label, len, name, op);
4392	}
4393}
4394
4395void
4396expand_label_proto(const char *name, char *label, size_t len, u_int8_t proto)
4397{
4398	struct protoent *pe;
4399	char n[4];
4400
4401	if (strstr(label, name) != NULL) {
4402		pe = getprotobynumber(proto);
4403		if (pe != NULL)
4404			expand_label_str(label, len, name, pe->p_name);
4405		else {
4406			snprintf(n, sizeof(n), "%u", proto);
4407			expand_label_str(label, len, name, n);
4408		}
4409	}
4410}
4411
4412void
4413expand_label_nr(const char *name, char *label, size_t len)
4414{
4415	char n[11];
4416
4417	if (strstr(label, name) != NULL) {
4418		snprintf(n, sizeof(n), "%u", pf->anchor->match);
4419		expand_label_str(label, len, name, n);
4420	}
4421}
4422
4423void
4424expand_label(char *label, size_t len, const char *ifname, sa_family_t af,
4425    struct node_host *src_host, struct node_port *src_port,
4426    struct node_host *dst_host, struct node_port *dst_port,
4427    u_int8_t proto)
4428{
4429	expand_label_if("$if", label, len, ifname);
4430	expand_label_addr("$srcaddr", label, len, af, src_host);
4431	expand_label_addr("$dstaddr", label, len, af, dst_host);
4432	expand_label_port("$srcport", label, len, src_port);
4433	expand_label_port("$dstport", label, len, dst_port);
4434	expand_label_proto("$proto", label, len, proto);
4435	expand_label_nr("$nr", label, len);
4436}
4437
4438int
4439expand_altq(struct pf_altq *a, struct node_if *interfaces,
4440    struct node_queue *nqueues, struct node_queue_bw bwspec,
4441    struct node_queue_opt *opts)
4442{
4443	struct pf_altq		 pa, pb;
4444	char			 qname[PF_QNAME_SIZE];
4445	struct node_queue	*n;
4446	struct node_queue_bw	 bw;
4447	int			 errs = 0;
4448
4449	LOOP_THROUGH(struct node_if, interface, interfaces,
4450		memcpy(&pa, a, sizeof(struct pf_altq));
4451		if (strlcpy(pa.ifname, interface->ifname,
4452		    sizeof(pa.ifname)) >= sizeof(pa.ifname))
4453			errx(1, "expand_altq: strlcpy");
4454
4455		if (interface->not) {
4456			yyerror("altq on ! <interface> is not supported");
4457			errs++;
4458		} else if (interface->use_rdomain) {
4459			yyerror("altq on rdomain <num> is not supported");
4460			errs++;
4461		} else {
4462			if (eval_pfaltq(pf, &pa, &bwspec, opts))
4463				errs++;
4464			else
4465				if (pfctl_add_altq(pf, &pa))
4466					errs++;
4467
4468			if (pf->opts & PF_OPT_VERBOSE) {
4469				print_altq(&pf->paltq->altq, 0,
4470				    &bwspec, opts);
4471				if (nqueues && nqueues->tail) {
4472					printf("queue { ");
4473					LOOP_THROUGH(struct node_queue, queue,
4474					    nqueues,
4475						printf("%s ",
4476						    queue->queue);
4477					);
4478					printf("}");
4479				}
4480				printf("\n");
4481			}
4482
4483			if (pa.scheduler == ALTQT_CBQ ||
4484			    pa.scheduler == ALTQT_HFSC) {
4485				/* now create a root queue */
4486				memset(&pb, 0, sizeof(struct pf_altq));
4487				if (strlcpy(qname, "root_", sizeof(qname)) >=
4488				    sizeof(qname))
4489					errx(1, "expand_altq: strlcpy");
4490				if (strlcat(qname, interface->ifname,
4491				    sizeof(qname)) >= sizeof(qname))
4492					errx(1, "expand_altq: strlcat");
4493				if (strlcpy(pb.qname, qname,
4494				    sizeof(pb.qname)) >= sizeof(pb.qname))
4495					errx(1, "expand_altq: strlcpy");
4496				if (strlcpy(pb.ifname, interface->ifname,
4497				    sizeof(pb.ifname)) >= sizeof(pb.ifname))
4498					errx(1, "expand_altq: strlcpy");
4499				pb.qlimit = pa.qlimit;
4500				pb.scheduler = pa.scheduler;
4501				bw.bw_absolute = pa.ifbandwidth;
4502				bw.bw_percent = 0;
4503				if (eval_pfqueue(pf, &pb, &bw, opts))
4504					errs++;
4505				else
4506					if (pfctl_add_altq(pf, &pb))
4507						errs++;
4508			}
4509
4510			LOOP_THROUGH(struct node_queue, queue, nqueues,
4511				n = calloc(1, sizeof(struct node_queue));
4512				if (n == NULL)
4513					err(1, "expand_altq: calloc");
4514				if (pa.scheduler == ALTQT_CBQ ||
4515				    pa.scheduler == ALTQT_HFSC)
4516					if (strlcpy(n->parent, qname,
4517					    sizeof(n->parent)) >=
4518					    sizeof(n->parent))
4519						errx(1, "expand_altq: strlcpy");
4520				if (strlcpy(n->queue, queue->queue,
4521				    sizeof(n->queue)) >= sizeof(n->queue))
4522					errx(1, "expand_altq: strlcpy");
4523				if (strlcpy(n->ifname, interface->ifname,
4524				    sizeof(n->ifname)) >= sizeof(n->ifname))
4525					errx(1, "expand_altq: strlcpy");
4526				n->scheduler = pa.scheduler;
4527				n->next = NULL;
4528				n->tail = n;
4529				if (queues == NULL)
4530					queues = n;
4531				else {
4532					queues->tail->next = n;
4533					queues->tail = n;
4534				}
4535			);
4536		}
4537	);
4538	FREE_LIST(struct node_if, interfaces);
4539	FREE_LIST(struct node_queue, nqueues);
4540
4541	return (errs);
4542}
4543
4544int
4545expand_queue(struct pf_altq *a, struct node_if *interfaces,
4546    struct node_queue *nqueues, struct node_queue_bw bwspec,
4547    struct node_queue_opt *opts)
4548{
4549	struct node_queue	*n, *nq;
4550	struct pf_altq		 pa;
4551	u_int8_t		 found = 0;
4552	u_int8_t		 errs = 0;
4553
4554	if (queues == NULL) {
4555		yyerror("queue %s has no parent", a->qname);
4556		FREE_LIST(struct node_queue, nqueues);
4557		return (1);
4558	}
4559
4560	LOOP_THROUGH(struct node_if, interface, interfaces,
4561		LOOP_THROUGH(struct node_queue, tqueue, queues,
4562			if (!strncmp(a->qname, tqueue->queue, PF_QNAME_SIZE) &&
4563			    (interface->ifname[0] == 0 ||
4564			    (!interface->not && !strncmp(interface->ifname,
4565			    tqueue->ifname, IFNAMSIZ)) ||
4566			    (interface->not && strncmp(interface->ifname,
4567			    tqueue->ifname, IFNAMSIZ)))) {
4568				/* found ourself in queues */
4569				found++;
4570
4571				memcpy(&pa, a, sizeof(struct pf_altq));
4572
4573				if (pa.scheduler != ALTQT_NONE &&
4574				    pa.scheduler != tqueue->scheduler) {
4575					yyerror("exactly one scheduler type "
4576					    "per interface allowed");
4577					return (1);
4578				}
4579				pa.scheduler = tqueue->scheduler;
4580
4581				/* scheduler dependent error checking */
4582				switch (pa.scheduler) {
4583				case ALTQT_PRIQ:
4584					if (nqueues != NULL) {
4585						yyerror("priq queues cannot "
4586						    "have child queues");
4587						return (1);
4588					}
4589					if (bwspec.bw_absolute > 0 ||
4590					    bwspec.bw_percent < 100) {
4591						yyerror("priq doesn't take "
4592						    "bandwidth");
4593						return (1);
4594					}
4595					break;
4596				default:
4597					break;
4598				}
4599
4600				if (strlcpy(pa.ifname, tqueue->ifname,
4601				    sizeof(pa.ifname)) >= sizeof(pa.ifname))
4602					errx(1, "expand_queue: strlcpy");
4603				if (strlcpy(pa.parent, tqueue->parent,
4604				    sizeof(pa.parent)) >= sizeof(pa.parent))
4605					errx(1, "expand_queue: strlcpy");
4606
4607				if (eval_pfqueue(pf, &pa, &bwspec, opts))
4608					errs++;
4609				else
4610					if (pfctl_add_altq(pf, &pa))
4611						errs++;
4612
4613				for (nq = nqueues; nq != NULL; nq = nq->next) {
4614					if (!strcmp(a->qname, nq->queue)) {
4615						yyerror("queue cannot have "
4616						    "itself as child");
4617						errs++;
4618						continue;
4619					}
4620					n = calloc(1,
4621					    sizeof(struct node_queue));
4622					if (n == NULL)
4623						err(1, "expand_queue: calloc");
4624					if (strlcpy(n->parent, a->qname,
4625					    sizeof(n->parent)) >=
4626					    sizeof(n->parent))
4627						errx(1, "expand_queue strlcpy");
4628					if (strlcpy(n->queue, nq->queue,
4629					    sizeof(n->queue)) >=
4630					    sizeof(n->queue))
4631						errx(1, "expand_queue strlcpy");
4632					if (strlcpy(n->ifname, tqueue->ifname,
4633					    sizeof(n->ifname)) >=
4634					    sizeof(n->ifname))
4635						errx(1, "expand_queue strlcpy");
4636					n->scheduler = tqueue->scheduler;
4637					n->next = NULL;
4638					n->tail = n;
4639					if (queues == NULL)
4640						queues = n;
4641					else {
4642						queues->tail->next = n;
4643						queues->tail = n;
4644					}
4645				}
4646				if ((pf->opts & PF_OPT_VERBOSE) && (
4647				    (found == 1 && interface->ifname[0] == 0) ||
4648				    (found > 0 && interface->ifname[0] != 0))) {
4649					print_queue(&pf->paltq->altq, 0,
4650					    &bwspec, interface->ifname[0] != 0,
4651					    opts);
4652					if (nqueues && nqueues->tail) {
4653						printf("{ ");
4654						LOOP_THROUGH(struct node_queue,
4655						    queue, nqueues,
4656							printf("%s ",
4657							    queue->queue);
4658						);
4659						printf("}");
4660					}
4661					printf("\n");
4662				}
4663			}
4664		);
4665	);
4666
4667	FREE_LIST(struct node_queue, nqueues);
4668	FREE_LIST(struct node_if, interfaces);
4669
4670	if (!found) {
4671		yyerror("queue %s has no parent", a->qname);
4672		errs++;
4673	}
4674
4675	if (errs)
4676		return (1);
4677	else
4678		return (0);
4679}
4680
4681int
4682collapse_redirspec(struct pf_pool *rpool, struct pf_rule *r,
4683    struct redirspec *rs, u_int8_t allow_if)
4684{
4685	struct pf_opt_tbl *tbl = NULL;
4686	struct node_host *h;
4687	struct pf_rule_addr ra;
4688	int	i = 0;
4689
4690	if (!rs || !rs->rdr || rs->rdr->host == NULL) {
4691		rpool->addr.type = PF_ADDR_NONE;
4692		return (0);
4693	}
4694
4695	if (r->rule_flag & PFRULE_AFTO)
4696		r->naf = rs->af;
4697
4698	/* count matching addresses */
4699	for (h = rs->rdr->host; h != NULL; h = h->next) {
4700		if (!r->af || !h->af || rs->af || h->af == r->af) {
4701			i++;
4702			if (h->af && !r->af)
4703				r->af = h->af;
4704		} else if (r->naf && h->af == r->naf)
4705			i++;
4706	}
4707
4708	if (i == 0) {		/* no pool address */
4709		yyerror("af mismatch in %s spec",
4710		    allow_if ? "routing" : "translation");
4711		return (1);
4712	} else if (i == 1) {	/* only one address */
4713		for (h = rs->rdr->host; h != NULL; h = h->next)
4714			if (!h->af || !r->af || rs->af || r->af == h->af ||
4715			    (r->naf && r->naf == h->af))
4716				break;
4717		rpool->addr = h->addr;
4718		if (!allow_if && h->ifname) {
4719			yyerror("@if not permitted for translation");
4720			return (1);
4721		}
4722		if (h->ifname && strlcpy(rpool->ifname, h->ifname,
4723		    sizeof(rpool->ifname)) >= sizeof(rpool->ifname))
4724			errx(1, "collapse_redirspec: strlcpy");
4725
4726		return (0);
4727	} else {		/* more than one address */
4728		if (rs->pool_opts.type &&
4729		    (rs->pool_opts.type != PF_POOL_ROUNDROBIN) &&
4730		    (rs->pool_opts.type != PF_POOL_LEASTSTATES)) {
4731			yyerror("only round-robin or "
4732			    "least-states valid for multiple "
4733			    "translation or routing addresses");
4734			return (1);
4735		}
4736		for (h = rs->rdr->host; h != NULL; h = h->next) {
4737			if (!rs->af && r->af != h->af)
4738				continue;
4739			if (h->addr.type != PF_ADDR_ADDRMASK &&
4740			    h->addr.type != PF_ADDR_NONE) {
4741				yyerror("multiple tables or dynamic interfaces "
4742				    "not supported for translation or routing");
4743				return (1);
4744			}
4745			if (!allow_if && h->ifname) {
4746				yyerror("@if not permitted for translation");
4747				return (1);
4748			}
4749			memset(&ra, 0, sizeof(ra));
4750			ra.addr = h->addr;
4751			ra.weight = h->weight;
4752			if (add_opt_table(pf, &tbl,
4753			    h->af, &ra, h->ifname))
4754				return (1);
4755		}
4756	}
4757	if (tbl) {
4758		if ((pf->opts & PF_OPT_NOACTION) == 0 &&
4759		     pf_opt_create_table(pf, tbl))
4760				return (1);
4761
4762		pf->tdirty = 1;
4763
4764		if (pf->opts & PF_OPT_VERBOSE)
4765			print_tabledef(tbl->pt_name,
4766			    PFR_TFLAG_CONST | tbl->pt_flags,
4767			    1, &tbl->pt_nodes);
4768
4769		memset(&rpool->addr, 0, sizeof(rpool->addr));
4770		rpool->addr.type = PF_ADDR_TABLE;
4771		strlcpy(rpool->addr.v.tblname, tbl->pt_name,
4772		    sizeof(rpool->addr.v.tblname));
4773
4774		pfr_buf_clear(tbl->pt_buf);
4775		free(tbl->pt_buf);
4776		tbl->pt_buf = NULL;
4777		free(tbl);
4778	}
4779	return (0);
4780}
4781
4782
4783int
4784apply_redirspec(struct pf_pool *rpool, struct pf_rule *r, struct redirspec *rs,
4785    int isrdr, struct node_port *np)
4786{
4787	if (!rs || !rs->rdr)
4788		return (0);
4789
4790	rpool->proxy_port[0] = ntohs(rs->rdr->rport.a);
4791
4792	if (isrdr) {
4793		if (!rs->rdr->rport.b && rs->rdr->rport.t && np->port != NULL) {
4794			rpool->proxy_port[1] = ntohs(rs->rdr->rport.a) +
4795			    (ntohs(np->port[1]) - ntohs(np->port[0]));
4796		} else
4797			rpool->proxy_port[1] = ntohs(rs->rdr->rport.b);
4798	} else {
4799		rpool->proxy_port[1] = ntohs(rs->rdr->rport.b);
4800		if (!rpool->proxy_port[0] && !rpool->proxy_port[1]) {
4801			rpool->proxy_port[0] = PF_NAT_PROXY_PORT_LOW;
4802			rpool->proxy_port[1] = PF_NAT_PROXY_PORT_HIGH;
4803		} else if (!rpool->proxy_port[1])
4804			rpool->proxy_port[1] = rpool->proxy_port[0];
4805	}
4806
4807	rpool->opts = rs->pool_opts.type;
4808	if (rpool->addr.type == PF_ADDR_TABLE ||
4809	    DYNIF_MULTIADDR(rpool->addr))
4810		rpool->opts |= PF_POOL_ROUNDROBIN;
4811
4812	if (((rpool->opts & PF_POOL_TYPEMASK) != PF_POOL_ROUNDROBIN) &&
4813	    ((rpool->opts & PF_POOL_TYPEMASK) != PF_POOL_LEASTSTATES) &&
4814	    (disallow_table(rs->rdr->host, "tables are only supported "
4815	    "in round-robin or least-states address pools") ||
4816	    disallow_alias(rs->rdr->host, "interface (%s) is only supported "
4817	    "in round-robin or least-states address pools")))
4818		return (1);
4819
4820	if (rs->pool_opts.key != NULL)
4821		memcpy(&rpool->key, rs->pool_opts.key,
4822		    sizeof(struct pf_poolhashkey));
4823
4824	if (rs->pool_opts.opts)
4825		rpool->opts |= rs->pool_opts.opts;
4826
4827	if (rs->pool_opts.staticport) {
4828		if (isrdr) {
4829			yyerror("the 'static-port' option is only valid with "
4830			    "nat rules");
4831			return (1);
4832		}
4833		if (rpool->proxy_port[0] != PF_NAT_PROXY_PORT_LOW &&
4834		    rpool->proxy_port[1] != PF_NAT_PROXY_PORT_HIGH) {
4835			yyerror("the 'static-port' option can't be used when "
4836			    "specifying a port range");
4837			return (1);
4838		}
4839		rpool->proxy_port[0] = 0;
4840		rpool->proxy_port[1] = 0;
4841	}
4842
4843	return (0);
4844}
4845
4846
4847void
4848expand_rule(struct pf_rule *r, int keeprule, struct node_if *interfaces,
4849    struct redirspec *nat, struct redirspec *rdr, struct redirspec *rroute,
4850    struct node_proto *protos, struct node_os *src_oses,
4851    struct node_host *src_hosts, struct node_port *src_ports,
4852    struct node_host *dst_hosts, struct node_port *dst_ports,
4853    struct node_uid *uids, struct node_gid *gids, struct node_if *rcv,
4854    struct node_icmp *icmp_types, const char *anchor_call)
4855{
4856	sa_family_t		 af = r->af;
4857	int			 added = 0, error = 0;
4858	char			 ifname[IF_NAMESIZE];
4859	char			 label[PF_RULE_LABEL_SIZE];
4860	char			 tagname[PF_TAG_NAME_SIZE];
4861	char			 match_tagname[PF_TAG_NAME_SIZE];
4862	u_int8_t		 flags, flagset, keep_state;
4863	struct node_host	*srch, *dsth;
4864	struct redirspec	 binat;
4865	struct pf_rule		 rb;
4866	int			 dir = r->direction;
4867
4868	if (strlcpy(label, r->label, sizeof(label)) >= sizeof(label))
4869		errx(1, "expand_rule: strlcpy");
4870	if (strlcpy(tagname, r->tagname, sizeof(tagname)) >= sizeof(tagname))
4871		errx(1, "expand_rule: strlcpy");
4872	if (strlcpy(match_tagname, r->match_tagname, sizeof(match_tagname)) >=
4873	    sizeof(match_tagname))
4874		errx(1, "expand_rule: strlcpy");
4875	flags = r->flags;
4876	flagset = r->flagset;
4877	keep_state = r->keep_state;
4878
4879	r->src.addr.type = r->dst.addr.type = PF_ADDR_ADDRMASK;
4880
4881	LOOP_THROUGH(struct node_if, interface, interfaces,
4882	LOOP_THROUGH(struct node_proto, proto, protos,
4883	LOOP_THROUGH(struct node_icmp, icmp_type, icmp_types,
4884	LOOP_THROUGH(struct node_host, src_host, src_hosts,
4885	LOOP_THROUGH(struct node_host, dst_host, dst_hosts,
4886	LOOP_THROUGH(struct node_port, src_port, src_ports,
4887	LOOP_THROUGH(struct node_port, dst_port, dst_ports,
4888	LOOP_THROUGH(struct node_os, src_os, src_oses,
4889	LOOP_THROUGH(struct node_uid, uid, uids,
4890	LOOP_THROUGH(struct node_gid, gid, gids,
4891
4892		r->af = af;
4893
4894		error += collapse_redirspec(&r->rdr, r, rdr, 0);
4895		error += collapse_redirspec(&r->nat, r, nat, 0);
4896		error += collapse_redirspec(&r->route, r, rroute, 1);
4897
4898		/* disallow @if in from or to for the time being */
4899		if ((src_host->addr.type == PF_ADDR_ADDRMASK &&
4900		    src_host->ifname) ||
4901		    (dst_host->addr.type == PF_ADDR_ADDRMASK &&
4902		    dst_host->ifname)) {
4903			yyerror("@if syntax not permitted in from or to");
4904			error++;
4905		}
4906		/* for link-local IPv6 address, interface must match up */
4907		if ((r->af && src_host->af && r->af != src_host->af) ||
4908		    (r->af && dst_host->af && r->af != dst_host->af) ||
4909		    (src_host->af && dst_host->af &&
4910		    src_host->af != dst_host->af) ||
4911		    (src_host->ifindex && dst_host->ifindex &&
4912		    src_host->ifindex != dst_host->ifindex) ||
4913		    (src_host->ifindex && *interface->ifname &&
4914		    src_host->ifindex != if_nametoindex(interface->ifname)) ||
4915		    (dst_host->ifindex && *interface->ifname &&
4916		    dst_host->ifindex != if_nametoindex(interface->ifname)))
4917			continue;
4918		if (!r->af && src_host->af)
4919			r->af = src_host->af;
4920		else if (!r->af && dst_host->af)
4921			r->af = dst_host->af;
4922
4923		if (*interface->ifname)
4924			strlcpy(r->ifname, interface->ifname,
4925			    sizeof(r->ifname));
4926		else if (if_indextoname(src_host->ifindex, ifname))
4927			strlcpy(r->ifname, ifname, sizeof(r->ifname));
4928		else if (if_indextoname(dst_host->ifindex, ifname))
4929			strlcpy(r->ifname, ifname, sizeof(r->ifname));
4930		else
4931			memset(r->ifname, '\0', sizeof(r->ifname));
4932
4933		if (interface->use_rdomain)
4934			r->onrdomain = interface->rdomain;
4935		else
4936			r->onrdomain = -1;
4937		if (strlcpy(r->label, label, sizeof(r->label)) >=
4938		    sizeof(r->label))
4939			errx(1, "expand_rule: strlcpy");
4940		if (strlcpy(r->tagname, tagname, sizeof(r->tagname)) >=
4941		    sizeof(r->tagname))
4942			errx(1, "expand_rule: strlcpy");
4943		if (strlcpy(r->match_tagname, match_tagname,
4944		    sizeof(r->match_tagname)) >= sizeof(r->match_tagname))
4945			errx(1, "expand_rule: strlcpy");
4946		expand_label(r->label, PF_RULE_LABEL_SIZE, r->ifname, r->af,
4947		    src_host, src_port, dst_host, dst_port, proto->proto);
4948		expand_label(r->tagname, PF_TAG_NAME_SIZE, r->ifname, r->af,
4949		    src_host, src_port, dst_host, dst_port, proto->proto);
4950		expand_label(r->match_tagname, PF_TAG_NAME_SIZE, r->ifname,
4951		    r->af, src_host, src_port, dst_host, dst_port,
4952		    proto->proto);
4953
4954		error += check_netmask(src_host, r->af);
4955		error += check_netmask(dst_host, r->af);
4956
4957		r->ifnot = interface->not;
4958		r->proto = proto->proto;
4959		r->src.addr = src_host->addr;
4960		r->src.neg = src_host->not;
4961		r->src.port[0] = src_port->port[0];
4962		r->src.port[1] = src_port->port[1];
4963		r->src.port_op = src_port->op;
4964		r->dst.addr = dst_host->addr;
4965		r->dst.neg = dst_host->not;
4966		r->dst.port[0] = dst_port->port[0];
4967		r->dst.port[1] = dst_port->port[1];
4968		r->dst.port_op = dst_port->op;
4969		r->uid.op = uid->op;
4970		r->uid.uid[0] = uid->uid[0];
4971		r->uid.uid[1] = uid->uid[1];
4972		r->gid.op = gid->op;
4973		r->gid.gid[0] = gid->gid[0];
4974		r->gid.gid[1] = gid->gid[1];
4975		if (rcv) {
4976			strlcpy(r->rcv_ifname, rcv->ifname,
4977			    sizeof(r->rcv_ifname));
4978		}
4979		r->type = icmp_type->type;
4980		r->code = icmp_type->code;
4981
4982		if ((keep_state == PF_STATE_MODULATE ||
4983		    keep_state == PF_STATE_SYNPROXY) &&
4984		    r->proto && r->proto != IPPROTO_TCP)
4985			r->keep_state = PF_STATE_NORMAL;
4986		else
4987			r->keep_state = keep_state;
4988
4989		if (r->proto && r->proto != IPPROTO_TCP) {
4990			r->flags = 0;
4991			r->flagset = 0;
4992		} else {
4993			r->flags = flags;
4994			r->flagset = flagset;
4995		}
4996		if (icmp_type->proto && r->proto != icmp_type->proto) {
4997			yyerror("icmp-type mismatch");
4998			error++;
4999		}
5000
5001		if (src_os && src_os->os) {
5002			r->os_fingerprint = pfctl_get_fingerprint(src_os->os);
5003			if ((pf->opts & PF_OPT_VERBOSE2) &&
5004			    r->os_fingerprint == PF_OSFP_NOMATCH)
5005				fprintf(stderr,
5006				    "warning: unknown '%s' OS fingerprint\n",
5007				    src_os->os);
5008		} else {
5009			r->os_fingerprint = PF_OSFP_ANY;
5010		}
5011
5012		if (nat && nat->rdr && nat->binat) {
5013			if (disallow_table(src_host, "invalid use of table "
5014			    "<%s> as the source address of a binat-to rule") ||
5015			    disallow_alias(src_host, "invalid use of interface "
5016			    "(%s) as the source address of a binat-to rule")) {
5017				error++;
5018			} else if ((r->src.addr.type != PF_ADDR_ADDRMASK &&
5019			    r->src.addr.type != PF_ADDR_DYNIFTL) ||
5020			    (r->nat.addr.type != PF_ADDR_ADDRMASK &&
5021			    r->nat.addr.type != PF_ADDR_DYNIFTL)) {
5022				yyerror("binat-to requires a specified "
5023				    "source and redirect address");
5024				error++;
5025			}
5026			if (DYNIF_MULTIADDR(r->src.addr) ||
5027			    DYNIF_MULTIADDR(r->nat.addr)) {
5028				yyerror ("dynamic interfaces must be used with "
5029				    ":0 in a binat-to rule");
5030				error++;
5031			}
5032			if (PF_AZERO(&r->src.addr.v.a.mask, af) ||
5033			    PF_AZERO(&r->nat.addr.v.a.mask, af)) {
5034				yyerror ("source and redir addresess must have "
5035				    "a matching network mask in binat-rule");
5036				error++;
5037			}
5038			if (r->nat.addr.type == PF_ADDR_TABLE) {
5039				yyerror ("tables cannot be used as the redirect "
5040				    "address of a binat-to rule");
5041				error++;
5042			}
5043			if (r->direction != PF_INOUT) {
5044				yyerror("binat-to cannot be specified "
5045				    "with a direction");
5046				error++;
5047			}
5048
5049			/* first specify outbound NAT rule */
5050			r->direction = PF_OUT;
5051		}
5052
5053		error += apply_redirspec(&r->nat, r, nat, 0, dst_port);
5054		error += apply_redirspec(&r->rdr, r, rdr, 1, dst_port);
5055		error += apply_redirspec(&r->route, r, rroute, 2, dst_port);
5056
5057		if (rule_consistent(r, anchor_call[0]) < 0 || error)
5058			yyerror("skipping rule due to errors");
5059		else {
5060			r->nr = pf->astack[pf->asd]->match++;
5061			pfctl_add_rule(pf, r, anchor_call);
5062			added++;
5063		}
5064		r->direction = dir;
5065
5066		/* Generate binat's matching inbound rule */
5067		if (!error && nat && nat->rdr && nat->binat) {
5068			bcopy(r, &rb, sizeof(rb));
5069
5070			/* now specify inbound rdr rule */
5071			rb.direction = PF_IN;
5072
5073			if ((srch = calloc(1, sizeof(*srch))) == NULL)
5074				err(1, "expand_rule: calloc");
5075			bcopy(src_host, srch, sizeof(*srch));
5076			srch->ifname = NULL;
5077			srch->next = NULL;
5078			srch->tail = NULL;
5079
5080			if ((dsth = calloc(1, sizeof(*dsth))) == NULL)
5081				err(1, "expand_rule: calloc");
5082			bcopy(&rb.nat.addr, &dsth->addr, sizeof(dsth->addr));
5083			dsth->ifname = NULL;
5084			dsth->next = NULL;
5085			dsth->tail = NULL;
5086
5087			if ((binat.rdr =
5088			    calloc(1, sizeof(*binat.rdr))) == NULL)
5089				err(1, "expand_rule: calloc");
5090			bcopy(nat->rdr, binat.rdr, sizeof(*binat.rdr));
5091			bcopy(&nat->pool_opts, &binat.pool_opts,
5092			    sizeof(binat.pool_opts));
5093			binat.pool_opts.staticport = 0;
5094			binat.rdr->host = srch;
5095
5096			expand_rule(&rb, 1, interface, NULL, &binat, NULL,
5097			    proto,
5098			    src_os, dst_host, dst_port, dsth, src_port,
5099			    uid, gid, rcv, icmp_type, anchor_call);
5100		}
5101
5102	))))))))));
5103
5104	if (!keeprule) {
5105		FREE_LIST(struct node_if, interfaces);
5106		FREE_LIST(struct node_proto, protos);
5107		FREE_LIST(struct node_host, src_hosts);
5108		FREE_LIST(struct node_port, src_ports);
5109		FREE_LIST(struct node_os, src_oses);
5110		FREE_LIST(struct node_host, dst_hosts);
5111		FREE_LIST(struct node_port, dst_ports);
5112		FREE_LIST(struct node_uid, uids);
5113		FREE_LIST(struct node_gid, gids);
5114		FREE_LIST(struct node_icmp, icmp_types);
5115		if (nat && nat->rdr)
5116			FREE_LIST(struct node_host, nat->rdr->host);
5117		if (rdr && rdr->rdr)
5118			FREE_LIST(struct node_host, rdr->rdr->host);
5119
5120	}
5121
5122	if (!added)
5123		yyerror("rule expands to no valid combination");
5124}
5125
5126int
5127expand_skip_interface(struct node_if *interfaces)
5128{
5129	int	errs = 0;
5130
5131	if (!interfaces || (!interfaces->next && !interfaces->not &&
5132	    !strcmp(interfaces->ifname, "none"))) {
5133		if (pf->opts & PF_OPT_VERBOSE)
5134			printf("set skip on none\n");
5135		errs = pfctl_set_interface_flags(pf, "", PFI_IFLAG_SKIP, 0);
5136		return (errs);
5137	}
5138
5139	if (pf->opts & PF_OPT_VERBOSE)
5140		printf("set skip on {");
5141	LOOP_THROUGH(struct node_if, interface, interfaces,
5142		if (pf->opts & PF_OPT_VERBOSE)
5143			printf(" %s", interface->ifname);
5144		if (interface->not) {
5145			yyerror("skip on ! <interface> is not supported");
5146			errs++;
5147		} else if (interface->use_rdomain) {
5148			yyerror("skip on rdomain <num> is not supported");
5149			errs++;
5150		} else
5151			errs += pfctl_set_interface_flags(pf,
5152			    interface->ifname, PFI_IFLAG_SKIP, 1);
5153	);
5154	if (pf->opts & PF_OPT_VERBOSE)
5155		printf(" }\n");
5156
5157	FREE_LIST(struct node_if, interfaces);
5158
5159	if (errs)
5160		return (1);
5161	else
5162		return (0);
5163}
5164
5165void
5166freehostlist(struct node_host *h)
5167{
5168	struct node_host *n;
5169
5170	for (n = h; n != NULL; n = n->next)
5171		if (n->ifname)
5172			free(n->ifname);
5173	FREE_LIST(struct node_host, h);
5174}
5175
5176#undef FREE_LIST
5177#undef LOOP_THROUGH
5178
5179int
5180kw_cmp(const void *k, const void *e)
5181{
5182	return (strcmp(k, ((const struct keywords *)e)->k_name));
5183}
5184
5185int
5186lookup(char *s)
5187{
5188	/* this has to be sorted always */
5189	static const struct keywords keywords[] = {
5190		{ "af-to",		AFTO},
5191		{ "all",		ALL},
5192		{ "allow-opts",		ALLOWOPTS},
5193		{ "altq",		ALTQ},
5194		{ "anchor",		ANCHOR},
5195		{ "antispoof",		ANTISPOOF},
5196		{ "any",		ANY},
5197		{ "bandwidth",		BANDWIDTH},
5198		{ "binat-to",		BINATTO},
5199		{ "bitmask",		BITMASK},
5200		{ "block",		BLOCK},
5201		{ "block-policy",	BLOCKPOLICY},
5202		{ "cbq",		CBQ},
5203		{ "code",		CODE},
5204		{ "debug",		DEBUG},
5205		{ "divert-packet",	DIVERTPACKET},
5206		{ "divert-reply",	DIVERTREPLY},
5207		{ "divert-to",		DIVERTTO},
5208		{ "drop",		DROP},
5209		{ "dup-to",		DUPTO},
5210		{ "file",		FILENAME},
5211		{ "fingerprints",	FINGERPRINTS},
5212		{ "flags",		FLAGS},
5213		{ "floating",		FLOATING},
5214		{ "flush",		FLUSH},
5215		{ "for",		FOR},
5216		{ "fragment",		FRAGMENT},
5217		{ "from",		FROM},
5218		{ "global",		GLOBAL},
5219		{ "group",		GROUP},
5220		{ "hfsc",		HFSC},
5221		{ "hostid",		HOSTID},
5222		{ "icmp-type",		ICMPTYPE},
5223		{ "icmp6-type",		ICMP6TYPE},
5224		{ "if-bound",		IFBOUND},
5225		{ "in",			IN},
5226		{ "include",		INCLUDE},
5227		{ "inet",		INET},
5228		{ "inet6",		INET6},
5229		{ "keep",		KEEP},
5230		{ "label",		LABEL},
5231		{ "least-states",	LEASTSTATES},
5232		{ "limit",		LIMIT},
5233		{ "linkshare",		LINKSHARE},
5234		{ "load",		LOAD},
5235		{ "log",		LOG},
5236		{ "loginterface",	LOGINTERFACE},
5237		{ "match",		MATCH},
5238		{ "matches",		MATCHES},
5239		{ "max",		MAXIMUM},
5240		{ "max-mss",		MAXMSS},
5241		{ "max-src-conn",	MAXSRCCONN},
5242		{ "max-src-conn-rate",	MAXSRCCONNRATE},
5243		{ "max-src-nodes",	MAXSRCNODES},
5244		{ "max-src-states",	MAXSRCSTATES},
5245		{ "min-ttl",		MINTTL},
5246		{ "modulate",		MODULATE},
5247		{ "nat-to",		NATTO},
5248		{ "no",			NO},
5249		{ "no-df",		NODF},
5250		{ "no-route",		NOROUTE},
5251		{ "no-sync",		NOSYNC},
5252		{ "on",			ON},
5253		{ "once",		ONCE},
5254		{ "optimization",	OPTIMIZATION},
5255		{ "os",			OS},
5256		{ "out",		OUT},
5257		{ "overload",		OVERLOAD},
5258		{ "pass",		PASS},
5259		{ "pflow",		PFLOW},
5260		{ "port",		PORT},
5261		{ "prio",		PRIO},
5262		{ "priority",		PRIORITY},
5263		{ "priq",		PRIQ},
5264		{ "probability",	PROBABILITY},
5265		{ "proto",		PROTO},
5266		{ "qlimit",		QLIMIT},
5267		{ "queue",		QUEUE},
5268		{ "quick",		QUICK},
5269		{ "random",		RANDOM},
5270		{ "random-id",		RANDOMID},
5271		{ "rdomain",		RDOMAIN},
5272		{ "rdr-to",		RDRTO},
5273		{ "realtime",		REALTIME},
5274		{ "reassemble",		REASSEMBLE},
5275		{ "received-on",	RECEIVEDON},
5276		{ "reply-to",		REPLYTO},
5277		{ "return",		RETURN},
5278		{ "return-icmp",	RETURNICMP},
5279		{ "return-icmp6",	RETURNICMP6},
5280		{ "return-rst",		RETURNRST},
5281		{ "round-robin",	ROUNDROBIN},
5282		{ "route",		ROUTE},
5283		{ "route-to",		ROUTETO},
5284		{ "rtable",		RTABLE},
5285		{ "rule",		RULE},
5286		{ "ruleset-optimization",	RULESET_OPTIMIZATION},
5287		{ "scrub",		SCRUB},
5288		{ "set",		SET},
5289		{ "skip",		SKIP},
5290		{ "sloppy",		SLOPPY},
5291		{ "source-hash",	SOURCEHASH},
5292		{ "source-track",	SOURCETRACK},
5293		{ "state",		STATE},
5294		{ "state-defaults",	STATEDEFAULTS},
5295		{ "state-policy",	STATEPOLICY},
5296		{ "static-port",	STATICPORT},
5297		{ "sticky-address",	STICKYADDRESS},
5298		{ "synproxy",		SYNPROXY},
5299		{ "table",		TABLE},
5300		{ "tag",		TAG},
5301		{ "tagged",		TAGGED},
5302		{ "tbrsize",		TBRSIZE},
5303		{ "timeout",		TIMEOUT},
5304		{ "to",			TO},
5305		{ "tos",		TOS},
5306		{ "ttl",		TTL},
5307		{ "upperlimit",		UPPERLIMIT},
5308		{ "urpf-failed",	URPFFAILED},
5309		{ "user",		USER},
5310		{ "weight",		WEIGHT},
5311	};
5312	const struct keywords	*p;
5313
5314	p = bsearch(s, keywords, sizeof(keywords)/sizeof(keywords[0]),
5315	    sizeof(keywords[0]), kw_cmp);
5316
5317	if (p) {
5318		if (debug > 1)
5319			fprintf(stderr, "%s: %d\n", s, p->k_val);
5320		return (p->k_val);
5321	} else {
5322		if (debug > 1)
5323			fprintf(stderr, "string: %s\n", s);
5324		return (STRING);
5325	}
5326}
5327
5328#define MAXPUSHBACK	128
5329
5330char	*parsebuf;
5331int	 parseindex;
5332char	 pushback_buffer[MAXPUSHBACK];
5333int	 pushback_index = 0;
5334
5335int
5336lgetc(int quotec)
5337{
5338	int		c, next;
5339
5340	if (parsebuf) {
5341		/* Read character from the parsebuffer instead of input. */
5342		if (parseindex >= 0) {
5343			c = parsebuf[parseindex++];
5344			if (c != '\0')
5345				return (c);
5346			parsebuf = NULL;
5347		} else
5348			parseindex++;
5349	}
5350
5351	if (pushback_index)
5352		return (pushback_buffer[--pushback_index]);
5353
5354	if (quotec) {
5355		if ((c = getc(file->stream)) == EOF) {
5356			yyerror("reached end of file while parsing quoted string");
5357			if (popfile() == EOF)
5358				return (EOF);
5359			return (quotec);
5360		}
5361		return (c);
5362	}
5363
5364	while ((c = getc(file->stream)) == '\\') {
5365		next = getc(file->stream);
5366		if (next != '\n') {
5367			c = next;
5368			break;
5369		}
5370		yylval.lineno = file->lineno;
5371		file->lineno++;
5372	}
5373
5374	while (c == EOF) {
5375		if (popfile() == EOF)
5376			return (EOF);
5377		c = getc(file->stream);
5378	}
5379	return (c);
5380}
5381
5382int
5383lungetc(int c)
5384{
5385	if (c == EOF)
5386		return (EOF);
5387	if (parsebuf) {
5388		parseindex--;
5389		if (parseindex >= 0)
5390			return (c);
5391	}
5392	if (pushback_index < MAXPUSHBACK-1)
5393		return (pushback_buffer[pushback_index++] = c);
5394	else
5395		return (EOF);
5396}
5397
5398int
5399findeol(void)
5400{
5401	int	c;
5402
5403	parsebuf = NULL;
5404
5405	/* skip to either EOF or the first real EOL */
5406	while (1) {
5407		if (pushback_index)
5408			c = pushback_buffer[--pushback_index];
5409		else
5410			c = lgetc(0);
5411		if (c == '\n') {
5412			file->lineno++;
5413			break;
5414		}
5415		if (c == EOF)
5416			break;
5417	}
5418	return (ERROR);
5419}
5420
5421int
5422yylex(void)
5423{
5424	char	 buf[8096];
5425	char	*p, *val;
5426	int	 quotec, next, c;
5427	int	 token;
5428
5429top:
5430	p = buf;
5431	while ((c = lgetc(0)) == ' ' || c == '\t')
5432		; /* nothing */
5433
5434	yylval.lineno = file->lineno;
5435	if (c == '#')
5436		while ((c = lgetc(0)) != '\n' && c != EOF)
5437			; /* nothing */
5438	if (c == '$' && parsebuf == NULL) {
5439		while (1) {
5440			if ((c = lgetc(0)) == EOF)
5441				return (0);
5442
5443			if (p + 1 >= buf + sizeof(buf) - 1) {
5444				yyerror("string too long");
5445				return (findeol());
5446			}
5447			if (isalnum(c) || c == '_') {
5448				*p++ = (char)c;
5449				continue;
5450			}
5451			*p = '\0';
5452			lungetc(c);
5453			break;
5454		}
5455		val = symget(buf);
5456		if (val == NULL) {
5457			yyerror("macro '%s' not defined", buf);
5458			return (findeol());
5459		}
5460		parsebuf = val;
5461		parseindex = 0;
5462		goto top;
5463	}
5464
5465	switch (c) {
5466	case '\'':
5467	case '"':
5468		quotec = c;
5469		while (1) {
5470			if ((c = lgetc(quotec)) == EOF)
5471				return (0);
5472			if (c == '\n') {
5473				file->lineno++;
5474				continue;
5475			} else if (c == '\\') {
5476				if ((next = lgetc(quotec)) == EOF)
5477					return (0);
5478				if (next == quotec || c == ' ' || c == '\t')
5479					c = next;
5480				else if (next == '\n') {
5481					file->lineno++;
5482					continue;
5483				} else
5484					lungetc(next);
5485			} else if (c == quotec) {
5486				*p = '\0';
5487				break;
5488			}
5489			if (p + 1 >= buf + sizeof(buf) - 1) {
5490				yyerror("string too long");
5491				return (findeol());
5492			}
5493			*p++ = (char)c;
5494		}
5495		yylval.v.string = strdup(buf);
5496		if (yylval.v.string == NULL)
5497			err(1, "yylex: strdup");
5498		return (STRING);
5499	case '!':
5500		next = lgetc(0);
5501		if (next == '=')
5502			return (NE);
5503		lungetc(next);
5504		break;
5505	case '<':
5506		next = lgetc(0);
5507		if (next == '>') {
5508			yylval.v.i = PF_OP_XRG;
5509			return (PORTBINARY);
5510		} else if (next == '=')
5511			return (LE);
5512		lungetc(next);
5513		break;
5514	case '>':
5515		next = lgetc(0);
5516		if (next == '<') {
5517			yylval.v.i = PF_OP_IRG;
5518			return (PORTBINARY);
5519		} else if (next == '=')
5520			return (GE);
5521		lungetc(next);
5522		break;
5523	}
5524
5525#define allowed_to_end_number(x) \
5526	(isspace(x) || x == ')' || x ==',' || x == '/' || x == '}' || x == '=')
5527
5528	if (c == '-' || isdigit(c)) {
5529		do {
5530			*p++ = c;
5531			if ((unsigned)(p-buf) >= sizeof(buf)) {
5532				yyerror("string too long");
5533				return (findeol());
5534			}
5535		} while ((c = lgetc(0)) != EOF && isdigit(c));
5536		lungetc(c);
5537		if (p == buf + 1 && buf[0] == '-')
5538			goto nodigits;
5539		if (c == EOF || allowed_to_end_number(c)) {
5540			const char *errstr = NULL;
5541
5542			*p = '\0';
5543			yylval.v.number = strtonum(buf, LLONG_MIN,
5544			    LLONG_MAX, &errstr);
5545			if (errstr) {
5546				yyerror("\"%s\" invalid number: %s",
5547				    buf, errstr);
5548				return (findeol());
5549			}
5550			return (NUMBER);
5551		} else {
5552nodigits:
5553			while (p > buf + 1)
5554				lungetc(*--p);
5555			c = *--p;
5556			if (c == '-')
5557				return (c);
5558		}
5559	}
5560
5561#define allowed_in_string(x) \
5562	(isalnum(x) || (ispunct(x) && x != '(' && x != ')' && \
5563	x != '{' && x != '}' && x != '<' && x != '>' && \
5564	x != '!' && x != '=' && x != '/' && x != '#' && \
5565	x != ','))
5566
5567	if (isalnum(c) || c == ':' || c == '_') {
5568		do {
5569			*p++ = c;
5570			if ((unsigned)(p-buf) >= sizeof(buf)) {
5571				yyerror("string too long");
5572				return (findeol());
5573			}
5574		} while ((c = lgetc(0)) != EOF && (allowed_in_string(c)));
5575		lungetc(c);
5576		*p = '\0';
5577		if ((token = lookup(buf)) == STRING)
5578			if ((yylval.v.string = strdup(buf)) == NULL)
5579				err(1, "yylex: strdup");
5580		return (token);
5581	}
5582	if (c == '\n') {
5583		yylval.lineno = file->lineno;
5584		file->lineno++;
5585	}
5586	if (c == EOF)
5587		return (0);
5588	return (c);
5589}
5590
5591int
5592check_file_secrecy(int fd, const char *fname)
5593{
5594	struct stat	st;
5595
5596	if (fstat(fd, &st)) {
5597		warn("cannot stat %s", fname);
5598		return (-1);
5599	}
5600	if (st.st_uid != 0 && st.st_uid != getuid()) {
5601		warnx("%s: owner not root or current user", fname);
5602		return (-1);
5603	}
5604	if (st.st_mode & (S_IRWXG | S_IRWXO)) {
5605		warnx("%s: group/world readable/writeable", fname);
5606		return (-1);
5607	}
5608	return (0);
5609}
5610
5611struct file *
5612pushfile(const char *name, int secret)
5613{
5614	struct file	*nfile;
5615
5616	if ((nfile = calloc(1, sizeof(struct file))) == NULL ||
5617	    (nfile->name = strdup(name)) == NULL) {
5618		if (nfile)
5619			free(nfile);
5620		warn("malloc");
5621		return (NULL);
5622	}
5623	if (TAILQ_FIRST(&files) == NULL && strcmp(nfile->name, "-") == 0) {
5624		nfile->stream = stdin;
5625		free(nfile->name);
5626		if ((nfile->name = strdup("stdin")) == NULL) {
5627			warn("strdup");
5628			free(nfile);
5629			return (NULL);
5630		}
5631	} else if ((nfile->stream = fopen(nfile->name, "r")) == NULL) {
5632		warn("%s", nfile->name);
5633		free(nfile->name);
5634		free(nfile);
5635		return (NULL);
5636	} else if (secret &&
5637	    check_file_secrecy(fileno(nfile->stream), nfile->name)) {
5638		fclose(nfile->stream);
5639		free(nfile->name);
5640		free(nfile);
5641		return (NULL);
5642	}
5643	nfile->lineno = 1;
5644	TAILQ_INSERT_TAIL(&files, nfile, entry);
5645	return (nfile);
5646}
5647
5648int
5649popfile(void)
5650{
5651	struct file	*prev;
5652
5653	if ((prev = TAILQ_PREV(file, files, entry)) != NULL) {
5654		prev->errors += file->errors;
5655		TAILQ_REMOVE(&files, file, entry);
5656		fclose(file->stream);
5657		free(file->name);
5658		free(file);
5659		file = prev;
5660		return (0);
5661	}
5662	return (EOF);
5663}
5664
5665int
5666parse_config(char *filename, struct pfctl *xpf)
5667{
5668	int		 errors = 0;
5669	struct sym	*sym;
5670
5671	pf = xpf;
5672	errors = 0;
5673	returnicmpdefault = (ICMP_UNREACH << 8) | ICMP_UNREACH_PORT;
5674	returnicmp6default =
5675	    (ICMP6_DST_UNREACH << 8) | ICMP6_DST_UNREACH_NOPORT;
5676	blockpolicy = PFRULE_DROP;
5677
5678	if ((file = pushfile(filename, 0)) == NULL) {
5679		warn("cannot open the main config file!");
5680		return (-1);
5681	}
5682
5683	yyparse();
5684	errors = file->errors;
5685	popfile();
5686
5687	/* Free macros and check which have not been used. */
5688	while ((sym = TAILQ_FIRST(&symhead))) {
5689		if ((pf->opts & PF_OPT_VERBOSE2) && !sym->used)
5690			fprintf(stderr, "warning: macro '%s' not "
5691			    "used\n", sym->nam);
5692		free(sym->nam);
5693		free(sym->val);
5694		TAILQ_REMOVE(&symhead, sym, entry);
5695		free(sym);
5696	}
5697
5698	return (errors ? -1 : 0);
5699}
5700
5701int
5702symset(const char *nam, const char *val, int persist)
5703{
5704	struct sym	*sym;
5705
5706	for (sym = TAILQ_FIRST(&symhead); sym && strcmp(nam, sym->nam);
5707	    sym = TAILQ_NEXT(sym, entry))
5708		;	/* nothing */
5709
5710	if (sym != NULL) {
5711		if (sym->persist == 1)
5712			return (0);
5713		else {
5714			free(sym->nam);
5715			free(sym->val);
5716			TAILQ_REMOVE(&symhead, sym, entry);
5717			free(sym);
5718		}
5719	}
5720	if ((sym = calloc(1, sizeof(*sym))) == NULL)
5721		return (-1);
5722
5723	sym->nam = strdup(nam);
5724	if (sym->nam == NULL) {
5725		free(sym);
5726		return (-1);
5727	}
5728	sym->val = strdup(val);
5729	if (sym->val == NULL) {
5730		free(sym->nam);
5731		free(sym);
5732		return (-1);
5733	}
5734	sym->used = 0;
5735	sym->persist = persist;
5736	TAILQ_INSERT_TAIL(&symhead, sym, entry);
5737	return (0);
5738}
5739
5740int
5741pfctl_cmdline_symset(char *s)
5742{
5743	char	*sym, *val;
5744	int	 ret;
5745
5746	if ((val = strrchr(s, '=')) == NULL)
5747		return (-1);
5748
5749	if ((sym = malloc(strlen(s) - strlen(val) + 1)) == NULL)
5750		err(1, "pfctl_cmdline_symset: malloc");
5751
5752	strlcpy(sym, s, strlen(s) - strlen(val) + 1);
5753
5754	ret = symset(sym, val + 1, 1);
5755	free(sym);
5756
5757	return (ret);
5758}
5759
5760char *
5761symget(const char *nam)
5762{
5763	struct sym	*sym;
5764
5765	TAILQ_FOREACH(sym, &symhead, entry)
5766		if (strcmp(nam, sym->nam) == 0) {
5767			sym->used = 1;
5768			return (sym->val);
5769		}
5770	return (NULL);
5771}
5772
5773void
5774mv_rules(struct pf_ruleset *src, struct pf_ruleset *dst)
5775{
5776	struct pf_rule *r;
5777
5778	while ((r = TAILQ_FIRST(src->rules.active.ptr)) != NULL) {
5779		TAILQ_REMOVE(src->rules.active.ptr, r, entries);
5780		TAILQ_INSERT_TAIL(dst->rules.active.ptr, r, entries);
5781		dst->anchor->match++;
5782	}
5783	src->anchor->match = 0;
5784	while ((r = TAILQ_FIRST(src->rules.inactive.ptr)) != NULL) {
5785		TAILQ_REMOVE(src->rules.inactive.ptr, r, entries);
5786		TAILQ_INSERT_TAIL(dst->rules.inactive.ptr, r, entries);
5787	}
5788}
5789
5790void
5791decide_address_family(struct node_host *n, sa_family_t *af)
5792{
5793	if (*af != 0 || n == NULL)
5794		return;
5795	*af = n->af;
5796	while ((n = n->next) != NULL) {
5797		if (n->af != *af) {
5798			*af = 0;
5799			return;
5800		}
5801	}
5802}
5803
5804int
5805invalid_redirect(struct node_host *nh, sa_family_t af)
5806{
5807	if (!af) {
5808		struct node_host *n;
5809
5810		/* tables and dyniftl are ok without an address family */
5811		for (n = nh; n != NULL; n = n->next) {
5812			if (n->addr.type != PF_ADDR_TABLE &&
5813			    n->addr.type != PF_ADDR_DYNIFTL) {
5814				yyerror("address family not given and "
5815				    "translation address expands to multiple "
5816				    "address families");
5817				return (1);
5818			}
5819		}
5820	}
5821	if (nh == NULL) {
5822		yyerror("no translation address with matching address family "
5823		    "found.");
5824		return (1);
5825	}
5826	return (0);
5827}
5828
5829int
5830atoul(char *s, u_long *ulvalp)
5831{
5832	u_long	 ulval;
5833	char	*ep;
5834
5835	errno = 0;
5836	ulval = strtoul(s, &ep, 0);
5837	if (s[0] == '\0' || *ep != '\0')
5838		return (-1);
5839	if (errno == ERANGE && ulval == ULONG_MAX)
5840		return (-1);
5841	*ulvalp = ulval;
5842	return (0);
5843}
5844
5845int
5846getservice(char *n)
5847{
5848	struct servent	*s;
5849	u_long		 ulval;
5850
5851	if (atoul(n, &ulval) == 0) {
5852		if (ulval > 65535) {
5853			yyerror("illegal port value %lu", ulval);
5854			return (-1);
5855		}
5856		return (htons(ulval));
5857	} else {
5858		s = getservbyname(n, "tcp");
5859		if (s == NULL)
5860			s = getservbyname(n, "udp");
5861		if (s == NULL) {
5862			yyerror("unknown port %s", n);
5863			return (-1);
5864		}
5865		return (s->s_port);
5866	}
5867}
5868
5869int
5870rule_label(struct pf_rule *r, char *s)
5871{
5872	if (s) {
5873		if (strlcpy(r->label, s, sizeof(r->label)) >=
5874		    sizeof(r->label)) {
5875			yyerror("rule label too long (max %d chars)",
5876			    sizeof(r->label)-1);
5877			return (-1);
5878		}
5879	}
5880	return (0);
5881}
5882
5883u_int16_t
5884parseicmpspec(char *w, sa_family_t af)
5885{
5886	const struct icmpcodeent	*p;
5887	u_long				 ulval;
5888	u_int8_t			 icmptype;
5889
5890	if (af == AF_INET)
5891		icmptype = returnicmpdefault >> 8;
5892	else
5893		icmptype = returnicmp6default >> 8;
5894
5895	if (atoul(w, &ulval) == -1) {
5896		if ((p = geticmpcodebyname(icmptype, w, af)) == NULL) {
5897			yyerror("unknown icmp code %s", w);
5898			return (0);
5899		}
5900		ulval = p->code;
5901	}
5902	if (ulval > 255) {
5903		yyerror("invalid icmp code %lu", ulval);
5904		return (0);
5905	}
5906	return (icmptype << 8 | ulval);
5907}
5908
5909int
5910parseport(char *port, struct range *r, int extensions)
5911{
5912	char	*p = strchr(port, ':');
5913
5914	if (p == NULL) {
5915		if ((r->a = getservice(port)) == -1)
5916			return (-1);
5917		r->b = 0;
5918		r->t = PF_OP_NONE;
5919		return (0);
5920	}
5921	if ((extensions & PPORT_STAR) && !strcmp(p+1, "*")) {
5922		*p = 0;
5923		if ((r->a = getservice(port)) == -1)
5924			return (-1);
5925		r->b = 0;
5926		r->t = PF_OP_IRG;
5927		return (0);
5928	}
5929	if ((extensions & PPORT_RANGE)) {
5930		*p++ = 0;
5931		if ((r->a = getservice(port)) == -1 ||
5932		    (r->b = getservice(p)) == -1)
5933			return (-1);
5934		if (r->a == r->b) {
5935			r->b = 0;
5936			r->t = PF_OP_NONE;
5937		} else
5938			r->t = PF_OP_RRG;
5939		return (0);
5940	}
5941	return (-1);
5942}
5943
5944int
5945pfctl_load_anchors(int dev, struct pfctl *pf, struct pfr_buffer *trans)
5946{
5947	struct loadanchors	*la;
5948
5949	TAILQ_FOREACH(la, &loadanchorshead, entries) {
5950		if (pf->opts & PF_OPT_VERBOSE)
5951			fprintf(stderr, "\nLoading anchor %s from %s\n",
5952			    la->anchorname, la->filename);
5953		if (pfctl_rules(dev, la->filename, pf->opts, pf->optimize,
5954		    la->anchorname, trans) == -1)
5955			return (-1);
5956	}
5957
5958	return (0);
5959}
5960
5961int
5962kw_casecmp(const void *k, const void *e)
5963{
5964	return (strcasecmp(k, ((const struct keywords *)e)->k_name));
5965}
5966
5967int
5968map_tos(char *s, int *val)
5969{
5970	/* DiffServ Codepoints and other TOS mappings */
5971	const struct keywords	 toswords[] = {
5972		{ "af11",		IPTOS_DSCP_AF11 },
5973		{ "af12",		IPTOS_DSCP_AF12 },
5974		{ "af13",		IPTOS_DSCP_AF13 },
5975		{ "af21",		IPTOS_DSCP_AF21 },
5976		{ "af22",		IPTOS_DSCP_AF22 },
5977		{ "af23",		IPTOS_DSCP_AF23 },
5978		{ "af31",		IPTOS_DSCP_AF31 },
5979		{ "af32",		IPTOS_DSCP_AF32 },
5980		{ "af33",		IPTOS_DSCP_AF33 },
5981		{ "af41",		IPTOS_DSCP_AF41 },
5982		{ "af42",		IPTOS_DSCP_AF42 },
5983		{ "af43",		IPTOS_DSCP_AF43 },
5984		{ "critical",		IPTOS_PREC_CRITIC_ECP },
5985		{ "cs0",		IPTOS_DSCP_CS0 },
5986		{ "cs1",		IPTOS_DSCP_CS1 },
5987		{ "cs2",		IPTOS_DSCP_CS2 },
5988		{ "cs3",		IPTOS_DSCP_CS3 },
5989		{ "cs4",		IPTOS_DSCP_CS4 },
5990		{ "cs5",		IPTOS_DSCP_CS5 },
5991		{ "cs6",		IPTOS_DSCP_CS6 },
5992		{ "cs7",		IPTOS_DSCP_CS7 },
5993		{ "ef",			IPTOS_DSCP_EF },
5994		{ "inetcontrol",	IPTOS_PREC_INTERNETCONTROL },
5995		{ "lowdelay",		IPTOS_LOWDELAY },
5996		{ "netcontrol",		IPTOS_PREC_NETCONTROL },
5997		{ "reliability",	IPTOS_RELIABILITY },
5998		{ "throughput",		IPTOS_THROUGHPUT }
5999	};
6000	const struct keywords	*p;
6001
6002	p = bsearch(s, toswords, sizeof(toswords)/sizeof(toswords[0]),
6003	    sizeof(toswords[0]), kw_casecmp);
6004
6005	if (p) {
6006		*val = p->k_val;
6007		return (1);
6008	}
6009	return (0);
6010}
6011