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- Test m_pkthdr.fw_flags against DUMMYNET_MBUF_TAGGED before trying to locate
[dragonfly/netmp.git] / usr.sbin / pfctl / parse.y
blobd92a92b79e0c91ceb47471e8caca3542905c5564
1 /* $OpenBSD: parse.y,v 1.449 2004/03/20 23:20:20 david Exp $ */
2 /* $DragonFly: src/usr.sbin/pfctl/parse.y,v 1.6 2008/08/22 20:53:00 thomas Exp $ */
3
4 /*
5 * Copyright (c) 2001 Markus Friedl. All rights reserved.
6 * Copyright (c) 2001 Daniel Hartmeier. All rights reserved.
7 * Copyright (c) 2001 Theo de Raadt. All rights reserved.
8 * Copyright (c) 2002,2003 Henning Brauer. All rights reserved.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
20 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
21 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
22 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
23 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
24 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
28 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29 */
30 %{
31 #include <sys/types.h>
32 #include <sys/socket.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/pf/pfvar.h>
40 #include <arpa/inet.h>
41 #include <net/altq/altq.h>
42 #include <net/altq/altq_cbq.h>
43 #include <net/altq/altq_priq.h>
44 #include <net/altq/altq_hfsc.h>
45 #include <net/altq/altq_fairq.h>
46
47 #include <stdio.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
64 static struct pfctl *pf = NULL;
65 static FILE *fin = NULL;
66 static int debug = 0;
67 static int lineno = 1;
68 static int errors = 0;
69 static int rulestate = 0;
70 static u_int16_t returnicmpdefault =
71 (ICMP_UNREACH << 8) | ICMP_UNREACH_PORT;
72 static u_int16_t returnicmp6default =
73 (ICMP6_DST_UNREACH << 8) | ICMP6_DST_UNREACH_NOPORT;
74 static int blockpolicy = PFRULE_DROP;
75 static int require_order = 1;
76 static int default_statelock;
77 static int default_keeppolicy_action;
78 static struct node_state_opt *default_keeppolicy_options;
79
80 enum {
81 PFCTL_STATE_NONE,
82 PFCTL_STATE_OPTION,
83 PFCTL_STATE_SCRUB,
84 PFCTL_STATE_QUEUE,
85 PFCTL_STATE_NAT,
86 PFCTL_STATE_FILTER
87 };
88
89 struct node_proto {
90 u_int8_t proto;
91 struct node_proto *next;
92 struct node_proto *tail;
93 };
94
95 struct node_port {
96 u_int16_t port[2];
97 u_int8_t op;
98 struct node_port *next;
99 struct node_port *tail;
100 };
101
102 struct node_uid {
103 uid_t uid[2];
104 u_int8_t op;
105 struct node_uid *next;
106 struct node_uid *tail;
107 };
108
109 struct node_gid {
110 gid_t gid[2];
111 u_int8_t op;
112 struct node_gid *next;
113 struct node_gid *tail;
114 };
115
116 struct node_icmp {
117 u_int8_t code;
118 u_int8_t type;
119 u_int8_t proto;
120 struct node_icmp *next;
121 struct node_icmp *tail;
122 };
123
124 enum { PF_STATE_OPT_MAX, PF_STATE_OPT_NOSYNC, PF_STATE_OPT_SRCTRACK,
125 PF_STATE_OPT_MAX_SRC_STATES, PF_STATE_OPT_MAX_SRC_NODES,
126 PF_STATE_OPT_STATELOCK, PF_STATE_OPT_TIMEOUT,
127 PF_STATE_OPT_PICKUPS };
128
129 enum { PF_SRCTRACK_NONE, PF_SRCTRACK, PF_SRCTRACK_GLOBAL, PF_SRCTRACK_RULE };
130
131 struct node_state_opt {
132 int type;
133 union {
134 u_int32_t max_states;
135 u_int32_t max_src_states;
136 u_int32_t max_src_nodes;
137 u_int8_t src_track;
138 u_int8_t pickup_mode;
139 u_int32_t statelock;
140 struct {
141 int number;
142 u_int32_t seconds;
143 } timeout;
144 } data;
145 struct node_state_opt *next;
146 struct node_state_opt *tail;
147 };
148
149 struct peer {
150 struct node_host *host;
151 struct node_port *port;
152 };
153
154 struct node_queue {
155 char queue[PF_QNAME_SIZE];
156 char parent[PF_QNAME_SIZE];
157 char ifname[IFNAMSIZ];
158 int scheduler;
159 struct node_queue *next;
160 struct node_queue *tail;
161 } *queues = NULL;
162
163 struct node_qassign {
164 char *qname;
165 char *pqname;
166 };
167
168 struct filter_opts {
169 int marker;
170 #define FOM_FLAGS 0x01
171 #define FOM_ICMP 0x02
172 #define FOM_TOS 0x04
173 #define FOM_KEEP 0x08
174 #define FOM_SRCTRACK 0x10
175 struct node_uid *uid;
176 struct node_gid *gid;
177 struct {
178 u_int8_t b1;
179 u_int8_t b2;
180 u_int16_t w;
181 u_int16_t w2;
182 } flags;
183 struct node_icmp *icmpspec;
184 u_int32_t tos;
185 u_int32_t prob;
186 struct {
187 int action;
188 struct node_state_opt *options;
189 } keep;
190 int fragment;
191 int allowopts;
192 char *label;
193 struct node_qassign queues;
194 char *tag;
195 char *match_tag;
196 u_int8_t match_tag_not;
197 } filter_opts;
198
199 struct antispoof_opts {
200 char *label;
201 } antispoof_opts;
202
203 struct scrub_opts {
204 int marker;
205 #define SOM_MINTTL 0x01
206 #define SOM_MAXMSS 0x02
207 #define SOM_FRAGCACHE 0x04
208 int nodf;
209 int minttl;
210 int maxmss;
211 int fragcache;
212 int randomid;
213 int reassemble_tcp;
214 } scrub_opts;
215
216 struct queue_opts {
217 int marker;
218 #define QOM_BWSPEC 0x01
219 #define QOM_SCHEDULER 0x02
220 #define QOM_PRIORITY 0x04
221 #define QOM_TBRSIZE 0x08
222 #define QOM_QLIMIT 0x10
223 struct node_queue_bw queue_bwspec;
224 struct node_queue_opt scheduler;
225 int priority;
226 int tbrsize;
227 int qlimit;
228 } queue_opts;
229
230 struct table_opts {
231 int flags;
232 int init_addr;
233 struct node_tinithead init_nodes;
234 } table_opts;
235
236 struct pool_opts {
237 int marker;
238 #define POM_TYPE 0x01
239 #define POM_STICKYADDRESS 0x02
240 u_int8_t opts;
241 int type;
242 int staticport;
243 struct pf_poolhashkey *key;
244
245 } pool_opts;
246
247
248 struct node_hfsc_opts hfsc_opts;
249 struct node_fairq_opts fairq_opts;
250
251 int yyerror(const char *, ...);
252 int disallow_table(struct node_host *, const char *);
253 int disallow_alias(struct node_host *, const char *);
254 int rule_consistent(struct pf_rule *);
255 int filter_consistent(struct pf_rule *);
256 int nat_consistent(struct pf_rule *);
257 int rdr_consistent(struct pf_rule *);
258 int process_tabledef(char *, struct table_opts *);
259 int yyparse(void);
260 void expand_label_str(char *, size_t, const char *, const char *);
261 void expand_label_if(const char *, char *, size_t, const char *);
262 void expand_label_addr(const char *, char *, size_t, u_int8_t,
263 struct node_host *);
264 void expand_label_port(const char *, char *, size_t, struct node_port *);
265 void expand_label_proto(const char *, char *, size_t, u_int8_t);
266 void expand_label_nr(const char *, char *, size_t);
267 void expand_label(char *, size_t, const char *, u_int8_t, struct node_host *,
268 struct node_port *, struct node_host *, struct node_port *,
269 u_int8_t);
270 void expand_rule(struct pf_rule *, struct node_if *, struct node_host *,
271 struct node_proto *, struct node_os*, struct node_host *,
272 struct node_port *, struct node_host *, struct node_port *,
273 struct node_uid *, struct node_gid *, struct node_icmp *);
274 int expand_altq(struct pf_altq *, struct node_if *, struct node_queue *,
275 struct node_queue_bw bwspec, struct node_queue_opt *);
276 int expand_queue(struct pf_altq *, struct node_if *, struct node_queue *,
277 struct node_queue_bw, struct node_queue_opt *);
278
279 int check_rulestate(int);
280 int kw_cmp(const void *, const void *);
281 int lookup(char *);
282 int lgetc(FILE *);
283 int lungetc(int);
284 int findeol(void);
285 int yylex(void);
286 int atoul(char *, u_long *);
287 int getservice(char *);
288 int rule_label(struct pf_rule *, char *);
289
290 TAILQ_HEAD(symhead, sym) symhead = TAILQ_HEAD_INITIALIZER(symhead);
291 struct sym {
292 TAILQ_ENTRY(sym) entries;
293 int used;
294 int persist;
295 char *nam;
296 char *val;
297 };
298
299
300 int symset(const char *, const char *, int);
301 char *symget(const char *);
302
303 void decide_address_family(struct node_host *, sa_family_t *);
304 void remove_invalid_hosts(struct node_host **, sa_family_t *);
305 int invalid_redirect(struct node_host *, sa_family_t);
306 u_int16_t parseicmpspec(char *, sa_family_t);
307
308 TAILQ_HEAD(loadanchorshead, loadanchors)
309 loadanchorshead = TAILQ_HEAD_INITIALIZER(loadanchorshead);
310
311 struct loadanchors {
312 TAILQ_ENTRY(loadanchors) entries;
313 char *anchorname;
314 char *rulesetname;
315 char *filename;
316 };
317
318 typedef struct {
319 union {
320 u_int32_t number;
321 int i;
322 char *string;
323 struct {
324 u_int8_t b1;
325 u_int8_t b2;
326 u_int16_t w;
327 u_int16_t w2;
328 } b;
329 struct range {
330 int a;
331 int b;
332 int t;
333 } range;
334 struct node_if *interface;
335 struct node_proto *proto;
336 struct node_icmp *icmp;
337 struct node_host *host;
338 struct node_os *os;
339 struct node_port *port;
340 struct node_uid *uid;
341 struct node_gid *gid;
342 struct node_state_opt *state_opt;
343 struct peer peer;
344 struct {
345 struct peer src, dst;
346 struct node_os *src_os;
347 } fromto;
348 struct {
349 struct node_host *host;
350 u_int8_t rt;
351 u_int8_t pool_opts;
352 sa_family_t af;
353 struct pf_poolhashkey *key;
354 } route;
355 struct redirection {
356 struct node_host *host;
357 struct range rport;
358 } *redirection;
359 struct {
360 int action;
361 struct node_state_opt *options;
362 } keep_state;
363 struct {
364 u_int8_t log;
365 u_int8_t quick;
366 } logquick;
367 struct pf_poolhashkey *hashkey;
368 struct node_queue *queue;
369 struct node_queue_opt queue_options;
370 struct node_queue_bw queue_bwspec;
371 struct node_qassign qassign;
372 struct filter_opts filter_opts;
373 struct antispoof_opts antispoof_opts;
374 struct queue_opts queue_opts;
375 struct scrub_opts scrub_opts;
376 struct table_opts table_opts;
377 struct pool_opts pool_opts;
378 struct node_hfsc_opts hfsc_opts;
379 struct node_fairq_opts fairq_opts;
380 } v;
381 int lineno;
382 } YYSTYPE;
383
384 #define PREPARE_ANCHOR_RULE(r, a) \
385 do { \
386 memset(&(r), 0, sizeof(r)); \
387 if (strlcpy(r.anchorname, (a), \
388 sizeof(r.anchorname)) >= \
389 sizeof(r.anchorname)) { \
390 yyerror("anchor name '%s' too long", \
391 (a)); \
392 YYERROR; \
393 } \
394 } while (0)
395
396 #define DYNIF_MULTIADDR(addr) ((addr).type == PF_ADDR_DYNIFTL && \
397 (!((addr).iflags & PFI_AFLAG_NOALIAS) || \
398 !isdigit((addr).v.ifname[strlen((addr).v.ifname)-1])))
399
400 extern char *infile;
401
402 %}
403
404 %token PASS BLOCK SCRUB RETURN IN OS OUT LOG LOGALL QUICK ON FROM TO FLAGS
405 %token RETURNRST RETURNICMP RETURNICMP6 PROTO INET INET6 ALL ANY ICMPTYPE
406 %token ICMP6TYPE CODE KEEP MODULATE STATE PORT RDR NAT BINAT ARROW NODF
407 %token MINTTL ERROR ALLOWOPTS FASTROUTE FILENAME ROUTETO DUPTO REPLYTO NO LABEL
408 %token NOROUTE FRAGMENT USER GROUP MAXMSS MAXIMUM TTL TOS DROP TABLE
409 %token REASSEMBLE FRAGDROP FRAGCROP ANCHOR NATANCHOR RDRANCHOR BINATANCHOR
410 %token SET OPTIMIZATION TIMEOUT LIMIT LOGINTERFACE BLOCKPOLICY RANDOMID
411 %token REQUIREORDER SYNPROXY FINGERPRINTS NOSYNC DEBUG HOSTID
412 %token ANTISPOOF FOR
413 %token BITMASK RANDOM SOURCEHASH ROUNDROBIN STATICPORT PROBABILITY
414 %token ALTQ CBQ PRIQ HFSC FAIRQ BANDWIDTH TBRSIZE LINKSHARE REALTIME UPPERLIMIT
415 %token QUEUE PRIORITY QLIMIT HOGS BUCKETS
416 %token LOAD
417 %token PICKUPS NOPICKUPS HASHONLY
418 %token STICKYADDRESS MAXSRCSTATES MAXSRCNODES SOURCETRACK GLOBAL RULE
419 %token TAGGED TAG IFBOUND GRBOUND FLOATING STATEPOLICY KEEPPOLICY
420 %token <v.string> STRING
421 %token <v.i> PORTBINARY
422 %type <v.interface> interface if_list if_item_not if_item
423 %type <v.number> number icmptype icmp6type uid gid
424 %type <v.number> tos not yesno natpass
425 %type <v.i> no dir log af fragcache sourcetrack
426 %type <v.i> unaryop statelock
427 %type <v.b> action nataction flags flag blockspec
428 %type <v.range> port rport
429 %type <v.hashkey> hashkey
430 %type <v.proto> proto proto_list proto_item
431 %type <v.icmp> icmpspec
432 %type <v.icmp> icmp_list icmp_item
433 %type <v.icmp> icmp6_list icmp6_item
434 %type <v.fromto> fromto
435 %type <v.peer> ipportspec from to
436 %type <v.host> ipspec xhost host dynaddr host_list
437 %type <v.host> redir_host_list redirspec
438 %type <v.host> route_host route_host_list routespec
439 %type <v.os> os xos os_list
440 %type <v.port> portspec port_list port_item
441 %type <v.uid> uids uid_list uid_item
442 %type <v.gid> gids gid_list gid_item
443 %type <v.route> route
444 %type <v.redirection> redirection redirpool
445 %type <v.string> label string tag
446 %type <v.keep_state> keep
447 %type <v.state_opt> state_opt_spec state_opt_list state_opt_item
448 %type <v.logquick> logquick
449 %type <v.interface> antispoof_ifspc antispoof_iflst
450 %type <v.qassign> qname
451 %type <v.queue> qassign qassign_list qassign_item
452 %type <v.queue_options> scheduler
453 %type <v.number> cbqflags_list cbqflags_item
454 %type <v.number> priqflags_list priqflags_item
455 %type <v.hfsc_opts> hfscopts_list hfscopts_item hfsc_opts
456 %type <v.fairq_opts> fairqopts_list fairqopts_item fairq_opts
457 %type <v.queue_bwspec> bandwidth
458 %type <v.filter_opts> filter_opts filter_opt filter_opts_l
459 %type <v.antispoof_opts> antispoof_opts antispoof_opt antispoof_opts_l
460 %type <v.queue_opts> queue_opts queue_opt queue_opts_l
461 %type <v.scrub_opts> scrub_opts scrub_opt scrub_opts_l
462 %type <v.table_opts> table_opts table_opt table_opts_l
463 %type <v.pool_opts> pool_opts pool_opt pool_opts_l
464 %%
465
466 ruleset : /* empty */
467 | ruleset '\n'
468 | ruleset option '\n'
469 | ruleset scrubrule '\n'
470 | ruleset natrule '\n'
471 | ruleset binatrule '\n'
472 | ruleset pfrule '\n'
473 | ruleset anchorrule '\n'
474 | ruleset loadrule '\n'
475 | ruleset altqif '\n'
476 | ruleset queuespec '\n'
477 | ruleset varset '\n'
478 | ruleset antispoof '\n'
479 | ruleset tabledef '\n'
480 | ruleset error '\n' { errors++; }
481 ;
482
483 option : SET OPTIMIZATION STRING {
484 if (check_rulestate(PFCTL_STATE_OPTION)) {
485 free($3);
486 YYERROR;
487 }
488 if (pfctl_set_optimization(pf, $3) != 0) {
489 yyerror("unknown optimization %s", $3);
490 free($3);
491 YYERROR;
492 }
493 free ($3);
494 }
495 | SET TIMEOUT timeout_spec
496 | SET TIMEOUT '{' timeout_list '}'
497 | SET LIMIT limit_spec
498 | SET LIMIT '{' limit_list '}'
499 | SET LOGINTERFACE STRING {
500 if (check_rulestate(PFCTL_STATE_OPTION)) {
501 free($3);
502 YYERROR;
503 }
504 if ((ifa_exists($3, 0) == NULL) && strcmp($3, "none")) {
505 yyerror("interface %s doesn't exist", $3);
506 free($3);
507 YYERROR;
508 }
509 if (pfctl_set_logif(pf, $3) != 0) {
510 yyerror("error setting loginterface %s", $3);
511 free($3);
512 YYERROR;
513 }
514 free($3);
515 }
516 | SET HOSTID number {
517 if ($3 == 0) {
518 yyerror("hostid must be non-zero");
519 YYERROR;
520 }
521 if (pfctl_set_hostid(pf, $3) != 0) {
522 yyerror("error setting hostid %08x", $3);
523 YYERROR;
524 }
525 }
526 | SET BLOCKPOLICY DROP {
527 if (pf->opts & PF_OPT_VERBOSE)
528 printf("set block-policy drop\n");
529 if (check_rulestate(PFCTL_STATE_OPTION))
530 YYERROR;
531 blockpolicy = PFRULE_DROP;
532 }
533 | SET BLOCKPOLICY RETURN {
534 if (pf->opts & PF_OPT_VERBOSE)
535 printf("set block-policy return\n");
536 if (check_rulestate(PFCTL_STATE_OPTION))
537 YYERROR;
538 blockpolicy = PFRULE_RETURN;
539 }
540 | SET REQUIREORDER yesno {
541 if (pf->opts & PF_OPT_VERBOSE)
542 printf("set require-order %s\n",
543 $3 == 1 ? "yes" : "no");
544 require_order = $3;
545 }
546 | SET FINGERPRINTS STRING {
547 if (pf->opts & PF_OPT_VERBOSE)
548 printf("fingerprints %s\n", $3);
549 if (check_rulestate(PFCTL_STATE_OPTION)) {
550 free($3);
551 YYERROR;
552 }
553 if (pfctl_file_fingerprints(pf->dev, pf->opts, $3)) {
554 yyerror("error loading fingerprints %s", $3);
555 free($3);
556 YYERROR;
557 }
558 free($3);
559 }
560 | SET STATEPOLICY statelock {
561 if (pf->opts & PF_OPT_VERBOSE)
562 switch ($3) {
563 case 0:
564 printf("set state-policy floating\n");
565 break;
566 case PFRULE_IFBOUND:
567 printf("set state-policy if-bound\n");
568 break;
569 case PFRULE_GRBOUND:
570 printf("set state-policy "
571 "group-bound\n");
572 break;
573 }
574 default_statelock = $3;
575 }
576 | SET KEEPPOLICY keep {
577 if (pf->opts & PF_OPT_VERBOSE)
578 printf("A default keeppolicy was set\n");
579 default_keeppolicy_action = $3.action;
580 default_keeppolicy_options = $3.options;
581 }
582 | SET DEBUG STRING {
583 if (check_rulestate(PFCTL_STATE_OPTION)) {
584 free($3);
585 YYERROR;
586 }
587 if (pfctl_set_debug(pf, $3) != 0) {
588 yyerror("error setting debuglevel %s", $3);
589 free($3);
590 YYERROR;
591 }
592 free($3);
593 }
594 ;
595
596 string : string STRING {
597 if (asprintf(&$$, "%s %s", $1, $2) == -1)
598 err(1, "string: asprintf");
599 free($1);
600 free($2);
601 }
602 | STRING
603 ;
604
605 varset : STRING '=' string {
606 if (pf->opts & PF_OPT_VERBOSE)
607 printf("%s = \"%s\"\n", $1, $3);
608 if (symset($1, $3, 0) == -1)
609 err(1, "cannot store variable %s", $1);
610 free($1);
611 free($3);
612 }
613 ;
614
615 anchorrule : ANCHOR string dir interface af proto fromto filter_opts {
616 struct pf_rule r;
617
618 if (check_rulestate(PFCTL_STATE_FILTER)) {
619 free($2);
620 YYERROR;
621 }
622
623 PREPARE_ANCHOR_RULE(r, $2);
624 r.direction = $3;
625 r.af = $5;
626 r.prob = $8.prob;
627
628 if ($8.match_tag)
629 if (strlcpy(r.match_tagname, $8.match_tag,
630 PF_TAG_NAME_SIZE) >= PF_TAG_NAME_SIZE) {
631 yyerror("tag too long, max %u chars",
632 PF_TAG_NAME_SIZE - 1);
633 YYERROR;
634 }
635 r.match_tag_not = $8.match_tag_not;
636
637 decide_address_family($7.src.host, &r.af);
638 decide_address_family($7.dst.host, &r.af);
639
640 expand_rule(&r, $4, NULL, $6, $7.src_os,
641 $7.src.host, $7.src.port, $7.dst.host, $7.dst.port,
642 0, 0, 0);
643 }
644 | NATANCHOR string interface af proto fromto {
645 struct pf_rule r;
646
647 if (check_rulestate(PFCTL_STATE_NAT)) {
648 free($2);
649 YYERROR;
650 }
651
652 PREPARE_ANCHOR_RULE(r, $2);
653 free($2);
654 r.action = PF_NAT;
655 r.af = $4;
656
657 decide_address_family($6.src.host, &r.af);
658 decide_address_family($6.dst.host, &r.af);
659
660 expand_rule(&r, $3, NULL, $5, $6.src_os,
661 $6.src.host, $6.src.port, $6.dst.host, $6.dst.port,
662 0, 0, 0);
663 }
664 | RDRANCHOR string interface af proto fromto {
665 struct pf_rule r;
666
667 if (check_rulestate(PFCTL_STATE_NAT)) {
668 free($2);
669 YYERROR;
670 }
671
672 PREPARE_ANCHOR_RULE(r, $2);
673 free($2);
674 r.action = PF_RDR;
675 r.af = $4;
676
677 decide_address_family($6.src.host, &r.af);
678 decide_address_family($6.dst.host, &r.af);
679
680 if ($6.src.port != NULL) {
681 yyerror("source port parameter not supported"
682 " in rdr-anchor");
683 YYERROR;
684 }
685 if ($6.dst.port != NULL) {
686 if ($6.dst.port->next != NULL) {
687 yyerror("destination port list "
688 "expansion not supported in "
689 "rdr-anchor");
690 YYERROR;
691 } else if ($6.dst.port->op != PF_OP_EQ) {
692 yyerror("destination port operators"
693 " not supported in rdr-anchor");
694 YYERROR;
695 }
696 r.dst.port[0] = $6.dst.port->port[0];
697 r.dst.port[1] = $6.dst.port->port[1];
698 r.dst.port_op = $6.dst.port->op;
699 }
700
701 expand_rule(&r, $3, NULL, $5, $6.src_os,
702 $6.src.host, $6.src.port, $6.dst.host, $6.dst.port,
703 0, 0, 0);
704 }
705 | BINATANCHOR string interface af proto fromto {
706 struct pf_rule r;
707
708 if (check_rulestate(PFCTL_STATE_NAT)) {
709 free($2);
710 YYERROR;
711 }
712
713 PREPARE_ANCHOR_RULE(r, $2);
714 free($2);
715 r.action = PF_BINAT;
716 r.af = $4;
717 if ($5 != NULL) {
718 if ($5->next != NULL) {
719 yyerror("proto list expansion"
720 " not supported in binat-anchor");
721 YYERROR;
722 }
723 r.proto = $5->proto;
724 free($5);
725 }
726
727 if ($6.src.host != NULL || $6.src.port != NULL ||
728 $6.dst.host != NULL || $6.dst.port != NULL) {
729 yyerror("fromto parameter not supported"
730 " in binat-anchor");
731 YYERROR;
732 }
733
734 decide_address_family($6.src.host, &r.af);
735 decide_address_family($6.dst.host, &r.af);
736
737 pfctl_add_rule(pf, &r);
738 }
739 ;
740
741 loadrule : LOAD ANCHOR string FROM string {
742 char *t;
743 struct loadanchors *loadanchor;
744
745 t = strsep(&$3, ":");
746 if (*t == '\0' || $3 == NULL || *$3 == '\0') {
747 yyerror("anchor '%s' invalid\n", $3);
748 free(t);
749 YYERROR;
750 }
751 if (strlen(t) >= PF_ANCHOR_NAME_SIZE) {
752 yyerror("anchorname %s too long, max %u\n",
753 t, PF_ANCHOR_NAME_SIZE - 1);
754 free(t);
755 YYERROR;
756 }
757 if (strlen($3) >= PF_RULESET_NAME_SIZE) {
758 yyerror("rulesetname %s too long, max %u\n",
759 $3, PF_RULESET_NAME_SIZE - 1);
760 free(t);
761 YYERROR;
762 }
763
764 loadanchor = calloc(1, sizeof(struct loadanchors));
765 if (loadanchor == NULL)
766 err(1, "loadrule: calloc");
767 if ((loadanchor->anchorname = strdup(t)) == NULL)
768 err(1, "loadrule: strdup");
769 if ((loadanchor->rulesetname = strdup($3)) == NULL)
770 err(1, "loadrule: strdup");
771 if ((loadanchor->filename = strdup($5)) == NULL)
772 err(1, "loadrule: strdup");
773
774 TAILQ_INSERT_TAIL(&loadanchorshead, loadanchor,
775 entries);
776
777 free(t); /* not $3 */
778 free($5);
779 };
780
781 scrubrule : SCRUB dir logquick interface af proto fromto scrub_opts
782 {
783 struct pf_rule r;
784
785 if (check_rulestate(PFCTL_STATE_SCRUB))
786 YYERROR;
787
788 memset(&r, 0, sizeof(r));
789
790 r.action = PF_SCRUB;
791 r.direction = $2;
792
793 r.log = $3.log;
794 if ($3.quick) {
795 yyerror("scrub rules do not support 'quick'");
796 YYERROR;
797 }
798
799 r.af = $5;
800 if ($8.nodf)
801 r.rule_flag |= PFRULE_NODF;
802 if ($8.randomid)
803 r.rule_flag |= PFRULE_RANDOMID;
804 if ($8.reassemble_tcp) {
805 if (r.direction != PF_INOUT) {
806 yyerror("reassemble tcp rules can not "
807 "specify direction");
808 YYERROR;
809 }
810 r.rule_flag |= PFRULE_REASSEMBLE_TCP;
811 }
812 if ($8.minttl)
813 r.min_ttl = $8.minttl;
814 if ($8.maxmss)
815 r.max_mss = $8.maxmss;
816 if ($8.fragcache)
817 r.rule_flag |= $8.fragcache;
818
819 expand_rule(&r, $4, NULL, $6, $7.src_os,
820 $7.src.host, $7.src.port, $7.dst.host, $7.dst.port,
821 NULL, NULL, NULL);
822 }
823 ;
824
825 scrub_opts : {
826 bzero(&scrub_opts, sizeof scrub_opts);
827 }
828 scrub_opts_l
829 { $$ = scrub_opts; }
830 | /* empty */ {
831 bzero(&scrub_opts, sizeof scrub_opts);
832 $$ = scrub_opts;
833 }
834 ;
835
836 scrub_opts_l : scrub_opts_l scrub_opt
837 | scrub_opt
838 ;
839
840 scrub_opt : NODF {
841 if (scrub_opts.nodf) {
842 yyerror("no-df cannot be respecified");
843 YYERROR;
844 }
845 scrub_opts.nodf = 1;
846 }
847 | MINTTL number {
848 if (scrub_opts.marker & SOM_MINTTL) {
849 yyerror("min-ttl cannot be respecified");
850 YYERROR;
851 }
852 if ($2 > 255) {
853 yyerror("illegal min-ttl value %d", $2);
854 YYERROR;
855 }
856 scrub_opts.marker |= SOM_MINTTL;
857 scrub_opts.minttl = $2;
858 }
859 | MAXMSS number {
860 if (scrub_opts.marker & SOM_MAXMSS) {
861 yyerror("max-mss cannot be respecified");
862 YYERROR;
863 }
864 if ($2 > 65535) {
865 yyerror("illegal max-mss value %d", $2);
866 YYERROR;
867 }
868 scrub_opts.marker |= SOM_MAXMSS;
869 scrub_opts.maxmss = $2;
870 }
871 | fragcache {
872 if (scrub_opts.marker & SOM_FRAGCACHE) {
873 yyerror("fragcache cannot be respecified");
874 YYERROR;
875 }
876 scrub_opts.marker |= SOM_FRAGCACHE;
877 scrub_opts.fragcache = $1;
878 }
879 | REASSEMBLE STRING {
880 if (strcasecmp($2, "tcp") != 0) {
881 free($2);
882 YYERROR;
883 }
884 free($2);
885 if (scrub_opts.reassemble_tcp) {
886 yyerror("reassemble tcp cannot be respecified");
887 YYERROR;
888 }
889 scrub_opts.reassemble_tcp = 1;
890 }
891 | RANDOMID {
892 if (scrub_opts.randomid) {
893 yyerror("random-id cannot be respecified");
894 YYERROR;
895 }
896 scrub_opts.randomid = 1;
897 }
898 ;
899
900 fragcache : FRAGMENT REASSEMBLE { $$ = 0; /* default */ }
901 | FRAGMENT FRAGCROP { $$ = PFRULE_FRAGCROP; }
902 | FRAGMENT FRAGDROP { $$ = PFRULE_FRAGDROP; }
903 ;
904
905 antispoof : ANTISPOOF logquick antispoof_ifspc af antispoof_opts {
906 struct pf_rule r;
907 struct node_host *h = NULL;
908 struct node_if *i, *j;
909
910 if (check_rulestate(PFCTL_STATE_FILTER))
911 YYERROR;
912
913 for (i = $3; i; i = i->next) {
914 bzero(&r, sizeof(r));
915
916 r.action = PF_DROP;
917 r.direction = PF_IN;
918 r.log = $2.log;
919 r.quick = $2.quick;
920 r.af = $4;
921 if (rule_label(&r, $5.label))
922 YYERROR;
923 j = calloc(1, sizeof(struct node_if));
924 if (j == NULL)
925 err(1, "antispoof: calloc");
926 if (strlcpy(j->ifname, i->ifname,
927 sizeof(j->ifname)) >= sizeof(j->ifname)) {
928 free(j);
929 yyerror("interface name too long");
930 YYERROR;
931 }
932 j->not = 1;
933 h = ifa_lookup(j->ifname, PFI_AFLAG_NETWORK);
934
935 if (h != NULL)
936 expand_rule(&r, j, NULL, NULL, NULL, h,
937 NULL, NULL, NULL, NULL, NULL, NULL);
938
939 if ((i->ifa_flags & IFF_LOOPBACK) == 0) {
940 bzero(&r, sizeof(r));
941
942 r.action = PF_DROP;
943 r.direction = PF_IN;
944 r.log = $2.log;
945 r.quick = $2.quick;
946 r.af = $4;
947 if (rule_label(&r, $5.label))
948 YYERROR;
949 h = ifa_lookup(i->ifname, 0);
950 if (h != NULL)
951 expand_rule(&r, NULL, NULL,
952 NULL, NULL, h, NULL, NULL,
953 NULL, NULL, NULL, NULL);
954 }
955 }
956 free($5.label);
957 }
958 ;
959
960 antispoof_ifspc : FOR if_item { $$ = $2; }
961 | FOR '{' antispoof_iflst '}' { $$ = $3; }
962 ;
963
964 antispoof_iflst : if_item { $$ = $1; }
965 | antispoof_iflst comma if_item {
966 $1->tail->next = $3;
967 $1->tail = $3;
968 $$ = $1;
969 }
970 ;
971
972 antispoof_opts : { bzero(&antispoof_opts, sizeof antispoof_opts); }
973 antispoof_opts_l
974 { $$ = antispoof_opts; }
975 | /* empty */ {
976 bzero(&antispoof_opts, sizeof antispoof_opts);
977 $$ = antispoof_opts;
978 }
979 ;
980
981 antispoof_opts_l : antispoof_opts_l antispoof_opt
982 | antispoof_opt
983 ;
984
985 antispoof_opt : label {
986 if (antispoof_opts.label) {
987 yyerror("label cannot be redefined");
988 YYERROR;
989 }
990 antispoof_opts.label = $1;
991 }
992 ;
993
994 not : '!' { $$ = 1; }
995 | /* empty */ { $$ = 0; }
996 ;
997
998 tabledef : TABLE '<' STRING '>' table_opts {
999 struct node_host *h, *nh;
1000 struct node_tinit *ti, *nti;
1001
1002 if (strlen($3) >= PF_TABLE_NAME_SIZE) {
1003 yyerror("table name too long, max %d chars",
1004 PF_TABLE_NAME_SIZE - 1);
1005 free($3);
1006 YYERROR;
1007 }
1008 if (pf->loadopt & PFCTL_FLAG_TABLE)
1009 if (process_tabledef($3, &$5)) {
1010 free($3);
1011 YYERROR;
1012 }
1013 free($3);
1014 for (ti = SIMPLEQ_FIRST(&$5.init_nodes);
1015 ti != SIMPLEQ_END(&$5.init_nodes); ti = nti) {
1016 if (ti->file)
1017 free(ti->file);
1018 for (h = ti->host; h != NULL; h = nh) {
1019 nh = h->next;
1020 free(h);
1021 }
1022 nti = SIMPLEQ_NEXT(ti, entries);
1023 free(ti);
1024 }
1025 }
1026 ;
1027
1028 table_opts : {
1029 bzero(&table_opts, sizeof table_opts);
1030 SIMPLEQ_INIT(&table_opts.init_nodes);
1031 }
1032 table_opts_l
1033 { $$ = table_opts; }
1034 | /* empty */
1035 {
1036 bzero(&table_opts, sizeof table_opts);
1037 SIMPLEQ_INIT(&table_opts.init_nodes);
1038 $$ = table_opts;
1039 }
1040 ;
1041
1042 table_opts_l : table_opts_l table_opt
1043 | table_opt
1044 ;
1045
1046 table_opt : STRING {
1047 if (!strcmp($1, "const"))
1048 table_opts.flags |= PFR_TFLAG_CONST;
1049 else if (!strcmp($1, "persist"))
1050 table_opts.flags |= PFR_TFLAG_PERSIST;
1051 else {
1052 free($1);
1053 YYERROR;
1054 }
1055 free($1);
1056 }
1057 | '{' '}' { table_opts.init_addr = 1; }
1058 | '{' host_list '}' {
1059 struct node_host *n;
1060 struct node_tinit *ti;
1061
1062 for (n = $2; n != NULL; n = n->next) {
1063 switch (n->addr.type) {
1064 case PF_ADDR_ADDRMASK:
1065 continue; /* ok */
1066 case PF_ADDR_DYNIFTL:
1067 yyerror("dynamic addresses are not "
1068 "permitted inside tables");
1069 break;
1070 case PF_ADDR_TABLE:
1071 yyerror("tables cannot contain tables");
1072 break;
1073 case PF_ADDR_NOROUTE:
1074 yyerror("\"no-route\" is not permitted "
1075 "inside tables");
1076 break;
1077 default:
1078 yyerror("unknown address type %d",
1079 n->addr.type);
1080 }
1081 YYERROR;
1082 }
1083 if (!(ti = calloc(1, sizeof(*ti))))
1084 err(1, "table_opt: calloc");
1085 ti->host = $2;
1086 SIMPLEQ_INSERT_TAIL(&table_opts.init_nodes, ti,
1087 entries);
1088 table_opts.init_addr = 1;
1089 }
1090 | FILENAME STRING {
1091 struct node_tinit *ti;
1092
1093 if (!(ti = calloc(1, sizeof(*ti))))
1094 err(1, "table_opt: calloc");
1095 ti->file = $2;
1096 SIMPLEQ_INSERT_TAIL(&table_opts.init_nodes, ti,
1097 entries);
1098 table_opts.init_addr = 1;
1099 }
1100 ;
1101
1102 altqif : ALTQ interface queue_opts QUEUE qassign {
1103 struct pf_altq a;
1104
1105 if (check_rulestate(PFCTL_STATE_QUEUE))
1106 YYERROR;
1107
1108 memset(&a, 0, sizeof(a));
1109 if ($3.scheduler.qtype == ALTQT_NONE) {
1110 yyerror("no scheduler specified!");
1111 YYERROR;
1112 }
1113 a.scheduler = $3.scheduler.qtype;
1114 a.qlimit = $3.qlimit;
1115 a.tbrsize = $3.tbrsize;
1116 if ($5 == NULL) {
1117 yyerror("no child queues specified");
1118 YYERROR;
1119 }
1120 if (expand_altq(&a, $2, $5, $3.queue_bwspec,
1121 &$3.scheduler))
1122 YYERROR;
1123 }
1124 ;
1125
1126 queuespec : QUEUE STRING interface queue_opts qassign {
1127 struct pf_altq a;
1128
1129 if (check_rulestate(PFCTL_STATE_QUEUE)) {
1130 free($2);
1131 YYERROR;
1132 }
1133
1134 memset(&a, 0, sizeof(a));
1135
1136 if (strlcpy(a.qname, $2, sizeof(a.qname)) >=
1137 sizeof(a.qname)) {
1138 yyerror("queue name too long (max "
1139 "%d chars)", PF_QNAME_SIZE-1);
1140 free($2);
1141 YYERROR;
1142 }
1143 free($2);
1144 if ($4.tbrsize) {
1145 yyerror("cannot specify tbrsize for queue");
1146 YYERROR;
1147 }
1148 if ($4.priority > 255) {
1149 yyerror("priority out of range: max 255");
1150 YYERROR;
1151 }
1152 a.priority = $4.priority;
1153 a.qlimit = $4.qlimit;
1154 a.scheduler = $4.scheduler.qtype;
1155 if (expand_queue(&a, $3, $5, $4.queue_bwspec,
1156 &$4.scheduler)) {
1157 yyerror("errors in queue definition");
1158 YYERROR;
1159 }
1160 }
1161 ;
1162
1163 queue_opts : {
1164 bzero(&queue_opts, sizeof queue_opts);
1165 queue_opts.priority = DEFAULT_PRIORITY;
1166 queue_opts.qlimit = DEFAULT_QLIMIT;
1167 queue_opts.scheduler.qtype = ALTQT_NONE;
1168 queue_opts.queue_bwspec.bw_percent = 100;
1169 }
1170 queue_opts_l
1171 { $$ = queue_opts; }
1172 | /* empty */ {
1173 bzero(&queue_opts, sizeof queue_opts);
1174 queue_opts.priority = DEFAULT_PRIORITY;
1175 queue_opts.qlimit = DEFAULT_QLIMIT;
1176 queue_opts.scheduler.qtype = ALTQT_NONE;
1177 queue_opts.queue_bwspec.bw_percent = 100;
1178 $$ = queue_opts;
1179 }
1180 ;
1181
1182 queue_opts_l : queue_opts_l queue_opt
1183 | queue_opt
1184 ;
1185
1186 queue_opt : BANDWIDTH bandwidth {
1187 if (queue_opts.marker & QOM_BWSPEC) {
1188 yyerror("bandwidth cannot be respecified");
1189 YYERROR;
1190 }
1191 queue_opts.marker |= QOM_BWSPEC;
1192 queue_opts.queue_bwspec = $2;
1193 }
1194 | PRIORITY number {
1195 if (queue_opts.marker & QOM_PRIORITY) {
1196 yyerror("priority cannot be respecified");
1197 YYERROR;
1198 }
1199 if ($2 > 255) {
1200 yyerror("priority out of range: max 255");
1201 YYERROR;
1202 }
1203 queue_opts.marker |= QOM_PRIORITY;
1204 queue_opts.priority = $2;
1205 }
1206 | QLIMIT number {
1207 if (queue_opts.marker & QOM_QLIMIT) {
1208 yyerror("qlimit cannot be respecified");
1209 YYERROR;
1210 }
1211 if ($2 > 65535) {
1212 yyerror("qlimit out of range: max 65535");
1213 YYERROR;
1214 }
1215 queue_opts.marker |= QOM_QLIMIT;
1216 queue_opts.qlimit = $2;
1217 }
1218 | scheduler {
1219 if (queue_opts.marker & QOM_SCHEDULER) {
1220 yyerror("scheduler cannot be respecified");
1221 YYERROR;
1222 }
1223 queue_opts.marker |= QOM_SCHEDULER;
1224 queue_opts.scheduler = $1;
1225 }
1226 | TBRSIZE number {
1227 if (queue_opts.marker & QOM_TBRSIZE) {
1228 yyerror("tbrsize cannot be respecified");
1229 YYERROR;
1230 }
1231 if ($2 > 65535) {
1232 yyerror("tbrsize too big: max 65535");
1233 YYERROR;
1234 }
1235 queue_opts.marker |= QOM_TBRSIZE;
1236 queue_opts.tbrsize = $2;
1237 }
1238 ;
1239
1240 bandwidth : STRING {
1241 double bps;
1242 char *cp;
1243
1244 $$.bw_percent = 0;
1245
1246 bps = strtod($1, &cp);
1247 if (cp != NULL) {
1248 if (!strcmp(cp, "b"))
1249 ; /* nothing */
1250 else if (!strcmp(cp, "Kb"))
1251 bps *= 1000;
1252 else if (!strcmp(cp, "Mb"))
1253 bps *= 1000 * 1000;
1254 else if (!strcmp(cp, "Gb"))
1255 bps *= 1000 * 1000 * 1000;
1256 else if (!strcmp(cp, "%")) {
1257 if (bps < 0 || bps > 100) {
1258 yyerror("bandwidth spec "
1259 "out of range");
1260 free($1);
1261 YYERROR;
1262 }
1263 $$.bw_percent = bps;
1264 bps = 0;
1265 } else {
1266 yyerror("unknown unit %s", cp);
1267 free($1);
1268 YYERROR;
1269 }
1270 }
1271 free($1);
1272 $$.bw_absolute = (u_int32_t)bps;
1273 }
1274 ;
1275
1276 scheduler : CBQ {
1277 $$.qtype = ALTQT_CBQ;
1278 $$.data.cbq_opts.flags = 0;
1279 }
1280 | CBQ '(' cbqflags_list ')' {
1281 $$.qtype = ALTQT_CBQ;
1282 $$.data.cbq_opts.flags = $3;
1283 }
1284 | PRIQ {
1285 $$.qtype = ALTQT_PRIQ;
1286 $$.data.priq_opts.flags = 0;
1287 }
1288 | PRIQ '(' priqflags_list ')' {
1289 $$.qtype = ALTQT_PRIQ;
1290 $$.data.priq_opts.flags = $3;
1291 }
1292 | HFSC {
1293 $$.qtype = ALTQT_HFSC;
1294 bzero(&$$.data.hfsc_opts,
1295 sizeof(struct node_hfsc_opts));
1296 }
1297 | HFSC '(' hfsc_opts ')' {
1298 $$.qtype = ALTQT_HFSC;
1299 $$.data.hfsc_opts = $3;
1300 }
1301 | FAIRQ {
1302 $$.qtype = ALTQT_FAIRQ;
1303 bzero(&$$.data.fairq_opts,
1304 sizeof(struct node_fairq_opts));
1305 }
1306 | FAIRQ '(' fairq_opts ')' {
1307 $$.qtype = ALTQT_FAIRQ;
1308 $$.data.fairq_opts = $3;
1309 }
1310 ;
1311
1312 cbqflags_list : cbqflags_item { $$ |= $1; }
1313 | cbqflags_list comma cbqflags_item { $$ |= $3; }
1314 ;
1315
1316 cbqflags_item : STRING {
1317 if (!strcmp($1, "default"))
1318 $$ = CBQCLF_DEFCLASS;
1319 else if (!strcmp($1, "borrow"))
1320 $$ = CBQCLF_BORROW;
1321 else if (!strcmp($1, "red"))
1322 $$ = CBQCLF_RED;
1323 else if (!strcmp($1, "ecn"))
1324 $$ = CBQCLF_RED|CBQCLF_ECN;
1325 else if (!strcmp($1, "rio"))
1326 $$ = CBQCLF_RIO;
1327 else {
1328 yyerror("unknown cbq flag \"%s\"", $1);
1329 free($1);
1330 YYERROR;
1331 }
1332 free($1);
1333 }
1334 ;
1335
1336 priqflags_list : priqflags_item { $$ |= $1; }
1337 | priqflags_list comma priqflags_item { $$ |= $3; }
1338 ;
1339
1340 priqflags_item : STRING {
1341 if (!strcmp($1, "default"))
1342 $$ = PRCF_DEFAULTCLASS;
1343 else if (!strcmp($1, "red"))
1344 $$ = PRCF_RED;
1345 else if (!strcmp($1, "ecn"))
1346 $$ = PRCF_RED|PRCF_ECN;
1347 else if (!strcmp($1, "rio"))
1348 $$ = PRCF_RIO;
1349 else {
1350 yyerror("unknown priq flag \"%s\"", $1);
1351 free($1);
1352 YYERROR;
1353 }
1354 free($1);
1355 }
1356 ;
1357
1358 hfsc_opts : {
1359 bzero(&hfsc_opts,
1360 sizeof(struct node_hfsc_opts));
1361 }
1362 hfscopts_list {
1363 $$ = hfsc_opts;
1364 }
1365 ;
1366
1367 hfscopts_list : hfscopts_item
1368 | hfscopts_list comma hfscopts_item
1369 ;
1370
1371 hfscopts_item : LINKSHARE bandwidth {
1372 if (hfsc_opts.linkshare.used) {
1373 yyerror("linkshare already specified");
1374 YYERROR;
1375 }
1376 hfsc_opts.linkshare.m2 = $2;
1377 hfsc_opts.linkshare.used = 1;
1378 }
1379 | LINKSHARE '(' bandwidth number bandwidth ')' {
1380 if (hfsc_opts.linkshare.used) {
1381 yyerror("linkshare already specified");
1382 YYERROR;
1383 }
1384 hfsc_opts.linkshare.m1 = $3;
1385 hfsc_opts.linkshare.d = $4;
1386 hfsc_opts.linkshare.m2 = $5;
1387 hfsc_opts.linkshare.used = 1;
1388 }
1389 | REALTIME bandwidth {
1390 if (hfsc_opts.realtime.used) {
1391 yyerror("realtime already specified");
1392 YYERROR;
1393 }
1394 hfsc_opts.realtime.m2 = $2;
1395 hfsc_opts.realtime.used = 1;
1396 }
1397 | REALTIME '(' bandwidth number bandwidth ')' {
1398 if (hfsc_opts.realtime.used) {
1399 yyerror("realtime already specified");
1400 YYERROR;
1401 }
1402 hfsc_opts.realtime.m1 = $3;
1403 hfsc_opts.realtime.d = $4;
1404 hfsc_opts.realtime.m2 = $5;
1405 hfsc_opts.realtime.used = 1;
1406 }
1407 | UPPERLIMIT bandwidth {
1408 if (hfsc_opts.upperlimit.used) {
1409 yyerror("upperlimit already specified");
1410 YYERROR;
1411 }
1412 hfsc_opts.upperlimit.m2 = $2;
1413 hfsc_opts.upperlimit.used = 1;
1414 }
1415 | UPPERLIMIT '(' bandwidth number bandwidth ')' {
1416 if (hfsc_opts.upperlimit.used) {
1417 yyerror("upperlimit already specified");
1418 YYERROR;
1419 }
1420 hfsc_opts.upperlimit.m1 = $3;
1421 hfsc_opts.upperlimit.d = $4;
1422 hfsc_opts.upperlimit.m2 = $5;
1423 hfsc_opts.upperlimit.used = 1;
1424 }
1425 | STRING {
1426 if (!strcmp($1, "default"))
1427 hfsc_opts.flags |= HFCF_DEFAULTCLASS;
1428 else if (!strcmp($1, "red"))
1429 hfsc_opts.flags |= HFCF_RED;
1430 else if (!strcmp($1, "ecn"))
1431 hfsc_opts.flags |= HFCF_RED|HFCF_ECN;
1432 else if (!strcmp($1, "rio"))
1433 hfsc_opts.flags |= HFCF_RIO;
1434 else {
1435 yyerror("unknown hfsc flag \"%s\"", $1);
1436 free($1);
1437 YYERROR;
1438 }
1439 free($1);
1440 }
1441 ;
1442
1443 fairq_opts : {
1444 bzero(&fairq_opts,
1445 sizeof(struct node_fairq_opts));
1446 }
1447 fairqopts_list {
1448 $$ = fairq_opts;
1449 }
1450 ;
1451
1452 fairqopts_list : fairqopts_item
1453 | fairqopts_list comma fairqopts_item
1454 ;
1455
1456 fairqopts_item : LINKSHARE bandwidth {
1457 if (fairq_opts.linkshare.used) {
1458 yyerror("linkshare already specified");
1459 YYERROR;
1460 }
1461 fairq_opts.linkshare.m2 = $2;
1462 fairq_opts.linkshare.used = 1;
1463 }
1464 | LINKSHARE '(' bandwidth number bandwidth ')' {
1465 if (fairq_opts.linkshare.used) {
1466 yyerror("linkshare already specified");
1467 YYERROR;
1468 }
1469 fairq_opts.linkshare.m1 = $3;
1470 fairq_opts.linkshare.d = $4;
1471 fairq_opts.linkshare.m2 = $5;
1472 fairq_opts.linkshare.used = 1;
1473 }
1474 | HOGS bandwidth {
1475 fairq_opts.hogs_bw = $2;
1476 }
1477 | BUCKETS number {
1478 fairq_opts.nbuckets = $2;
1479 }
1480 | STRING {
1481 if (!strcmp($1, "default"))
1482 fairq_opts.flags |= FARF_DEFAULTCLASS;
1483 else if (!strcmp($1, "red"))
1484 fairq_opts.flags |= FARF_RED;
1485 else if (!strcmp($1, "ecn"))
1486 fairq_opts.flags |= FARF_RED|FARF_ECN;
1487 else if (!strcmp($1, "rio"))
1488 fairq_opts.flags |= FARF_RIO;
1489 else {
1490 yyerror("unknown fairq flag \"%s\"", $1);
1491 free($1);
1492 YYERROR;
1493 }
1494 free($1);
1495 }
1496 ;
1497
1498 qassign : /* empty */ { $$ = NULL; }
1499 | qassign_item { $$ = $1; }
1500 | '{' qassign_list '}' { $$ = $2; }
1501 ;
1502
1503 qassign_list : qassign_item { $$ = $1; }
1504 | qassign_list comma qassign_item {
1505 $1->tail->next = $3;
1506 $1->tail = $3;
1507 $$ = $1;
1508 }
1509 ;
1510
1511 qassign_item : STRING {
1512 $$ = calloc(1, sizeof(struct node_queue));
1513 if ($$ == NULL)
1514 err(1, "qassign_item: calloc");
1515 if (strlcpy($$->queue, $1, sizeof($$->queue)) >=
1516 sizeof($$->queue)) {
1517 yyerror("queue name '%s' too long (max "
1518 "%d chars)", $1, sizeof($$->queue)-1);
1519 free($1);
1520 free($$);
1521 YYERROR;
1522 }
1523 free($1);
1524 $$->next = NULL;
1525 $$->tail = $$;
1526 }
1527 ;
1528
1529 pfrule : action dir logquick interface route af proto fromto
1530 filter_opts
1531 {
1532 struct pf_rule r;
1533 struct node_state_opt *o;
1534 struct node_proto *proto;
1535 int srctrack = 0;
1536 int statelock = 0;
1537 int dofree;
1538
1539 if (check_rulestate(PFCTL_STATE_FILTER))
1540 YYERROR;
1541
1542 memset(&r, 0, sizeof(r));
1543
1544 r.action = $1.b1;
1545 switch ($1.b2) {
1546 case PFRULE_RETURNRST:
1547 r.rule_flag |= PFRULE_RETURNRST;
1548 r.return_ttl = $1.w;
1549 break;
1550 case PFRULE_RETURNICMP:
1551 r.rule_flag |= PFRULE_RETURNICMP;
1552 r.return_icmp = $1.w;
1553 r.return_icmp6 = $1.w2;
1554 break;
1555 case PFRULE_RETURN:
1556 r.rule_flag |= PFRULE_RETURN;
1557 r.return_icmp = $1.w;
1558 r.return_icmp6 = $1.w2;
1559 break;
1560 }
1561 r.direction = $2;
1562 r.log = $3.log;
1563 r.quick = $3.quick;
1564 r.prob = $9.prob;
1565
1566 r.af = $6;
1567 if ($9.tag)
1568 if (strlcpy(r.tagname, $9.tag,
1569 PF_TAG_NAME_SIZE) >= PF_TAG_NAME_SIZE) {
1570 yyerror("tag too long, max %u chars",
1571 PF_TAG_NAME_SIZE - 1);
1572 YYERROR;
1573 }
1574 if ($9.match_tag)
1575 if (strlcpy(r.match_tagname, $9.match_tag,
1576 PF_TAG_NAME_SIZE) >= PF_TAG_NAME_SIZE) {
1577 yyerror("tag too long, max %u chars",
1578 PF_TAG_NAME_SIZE - 1);
1579 YYERROR;
1580 }
1581 r.match_tag_not = $9.match_tag_not;
1582 r.flags = $9.flags.b1;
1583 r.flagset = $9.flags.b2;
1584 if (rule_label(&r, $9.label))
1585 YYERROR;
1586 free($9.label);
1587 if ($9.flags.b1 || $9.flags.b2 || $8.src_os) {
1588 for (proto = $7; proto != NULL &&
1589 proto->proto != IPPROTO_TCP;
1590 proto = proto->next)
1591 ; /* nothing */
1592 if (proto == NULL && $7 != NULL) {
1593 if ($9.flags.b1 || $9.flags.b2)
1594 yyerror(
1595 "flags only apply to tcp");
1596 if ($8.src_os)
1597 yyerror(
1598 "OS fingerprinting only "
1599 "apply to tcp");
1600 YYERROR;
1601 }
1602 #if 0
1603 if (($9.flags.b1 & parse_flags("S")) == 0 &&
1604 $8.src_os) {
1605 yyerror("OS fingerprinting requires "
1606 "the SYN TCP flag (flags S/SA)");
1607 YYERROR;
1608 }
1609 #endif
1610 }
1611
1612 r.tos = $9.tos;
1613
1614 if (filter_opts.marker & FOM_KEEP) {
1615 r.keep_state = $9.keep.action;
1616 o = $9.keep.options;
1617 dofree = 1;
1618 } else if (r.action == PF_PASS) {
1619 r.keep_state = default_keeppolicy_action;
1620 o = default_keeppolicy_options;
1621 dofree = 0;
1622 } else {
1623 o = NULL;
1624 dofree = 0;
1625 }
1626 while (o) {
1627 struct node_state_opt *p = o;
1628
1629 switch (o->type) {
1630 case PF_STATE_OPT_MAX:
1631 if (r.max_states) {
1632 yyerror("state option 'max' "
1633 "multiple definitions");
1634 YYERROR;
1635 }
1636 r.max_states = o->data.max_states;
1637 break;
1638 case PF_STATE_OPT_NOSYNC:
1639 if (r.rule_flag & PFRULE_NOSYNC) {
1640 yyerror("state option 'sync' "
1641 "multiple definitions");
1642 YYERROR;
1643 }
1644 r.rule_flag |= PFRULE_NOSYNC;
1645 break;
1646 case PF_STATE_OPT_SRCTRACK:
1647 if (srctrack) {
1648 yyerror("state option "
1649 "'source-track' "
1650 "multiple definitions");
1651 YYERROR;
1652 }
1653 srctrack = o->data.src_track;
1654 break;
1655 case PF_STATE_OPT_MAX_SRC_STATES:
1656 if (r.max_src_states) {
1657 yyerror("state option "
1658 "'max-src-states' "
1659 "multiple definitions");
1660 YYERROR;
1661 }
1662 if (o->data.max_src_nodes == 0) {
1663 yyerror("'max-src-states' must "
1664 "be > 0");
1665 YYERROR;
1666 }
1667 r.max_src_states =
1668 o->data.max_src_states;
1669 r.rule_flag |= PFRULE_SRCTRACK;
1670 break;
1671 case PF_STATE_OPT_MAX_SRC_NODES:
1672 if (r.max_src_nodes) {
1673 yyerror("state option "
1674 "'max-src-nodes' "
1675 "multiple definitions");
1676 YYERROR;
1677 }
1678 if (o->data.max_src_nodes == 0) {
1679 yyerror("'max-src-nodes' must "
1680 "be > 0");
1681 YYERROR;
1682 }
1683 r.max_src_nodes =
1684 o->data.max_src_nodes;
1685 r.rule_flag |= PFRULE_SRCTRACK |
1686 PFRULE_RULESRCTRACK;
1687 break;
1688 case PF_STATE_OPT_STATELOCK:
1689 if (statelock) {
1690 yyerror("state locking option: "
1691 "multiple definitions");
1692 YYERROR;
1693 }
1694 statelock = 1;
1695 r.rule_flag |= o->data.statelock;
1696 break;
1697 case PF_STATE_OPT_TIMEOUT:
1698 if (r.timeout[o->data.timeout.number]) {
1699 yyerror("state timeout %s "
1700 "multiple definitions",
1701 pf_timeouts[o->data.
1702 timeout.number].name);
1703 YYERROR;
1704 }
1705 r.timeout[o->data.timeout.number] =
1706 o->data.timeout.seconds;
1707 break;
1708 case PF_STATE_OPT_PICKUPS:
1709 r.pickup_mode = o->data.pickup_mode;
1710 break;
1711 }
1712 o = o->next;
1713 if (dofree)
1714 free(p);
1715 }
1716
1717 /*
1718 * 'flags S/SA' by default on stateful rules if
1719 * the pickup mode is unspecified or disabled.
1720 *
1721 * If the pickup mode is enabled or hashonly we
1722 * want to create state regardless of the flags.
1723 */
1724 if (!r.action && !r.flags && !r.flagset &&
1725 !$9.fragment && !($9.marker & FOM_FLAGS) &&
1726 r.keep_state) {
1727 switch(r.pickup_mode) {
1728 case PF_PICKUPS_UNSPECIFIED:
1729 case PF_PICKUPS_DISABLED:
1730 r.flags = parse_flags("S");
1731 r.flagset = parse_flags("SA");
1732 break;
1733 case PF_PICKUPS_HASHONLY:
1734 case PF_PICKUPS_ENABLED:
1735 /* no flag restrictions */
1736 break;
1737 }
1738 }
1739
1740 if (srctrack) {
1741 if (srctrack == PF_SRCTRACK_GLOBAL &&
1742 r.max_src_nodes) {
1743 yyerror("'max-src-nodes' is "
1744 "incompatible with "
1745 "'source-track global'");
1746 YYERROR;
1747 }
1748 r.rule_flag |= PFRULE_SRCTRACK;
1749 if (srctrack == PF_SRCTRACK_RULE)
1750 r.rule_flag |= PFRULE_RULESRCTRACK;
1751 }
1752 if (r.keep_state && !statelock)
1753 r.rule_flag |= default_statelock;
1754
1755 if ($9.fragment)
1756 r.rule_flag |= PFRULE_FRAGMENT;
1757 r.allow_opts = $9.allowopts;
1758
1759 decide_address_family($8.src.host, &r.af);
1760 decide_address_family($8.dst.host, &r.af);
1761
1762 if ($5.rt) {
1763 if (!r.direction) {
1764 yyerror("direction must be explicit "
1765 "with rules that specify routing");
1766 YYERROR;
1767 }
1768 r.rt = $5.rt;
1769 r.rpool.opts = $5.pool_opts;
1770 if ($5.key != NULL)
1771 memcpy(&r.rpool.key, $5.key,
1772 sizeof(struct pf_poolhashkey));
1773 }
1774 if (r.rt && r.rt != PF_FASTROUTE) {
1775 decide_address_family($5.host, &r.af);
1776 remove_invalid_hosts(&$5.host, &r.af);
1777 if ($5.host == NULL) {
1778 yyerror("no routing address with "
1779 "matching address family found.");
1780 YYERROR;
1781 }
1782 if ((r.rpool.opts & PF_POOL_TYPEMASK) ==
1783 PF_POOL_NONE && ($5.host->next != NULL ||
1784 $5.host->addr.type == PF_ADDR_TABLE ||
1785 DYNIF_MULTIADDR($5.host->addr)))
1786 r.rpool.opts |= PF_POOL_ROUNDROBIN;
1787 if ((r.rpool.opts & PF_POOL_TYPEMASK) !=
1788 PF_POOL_ROUNDROBIN &&
1789 disallow_table($5.host, "tables are only "
1790 "supported in round-robin routing pools"))
1791 YYERROR;
1792 if ((r.rpool.opts & PF_POOL_TYPEMASK) !=
1793 PF_POOL_ROUNDROBIN &&
1794 disallow_alias($5.host, "interface (%s) "
1795 "is only supported in round-robin "
1796 "routing pools"))
1797 YYERROR;
1798 if ($5.host->next != NULL) {
1799 if ((r.rpool.opts & PF_POOL_TYPEMASK) !=
1800 PF_POOL_ROUNDROBIN) {
1801 yyerror("r.rpool.opts must "
1802 "be PF_POOL_ROUNDROBIN");
1803 YYERROR;
1804 }
1805 }
1806 }
1807 if ($9.queues.qname != NULL) {
1808 if (strlcpy(r.qname, $9.queues.qname,
1809 sizeof(r.qname)) >= sizeof(r.qname)) {
1810 yyerror("rule qname too long (max "
1811 "%d chars)", sizeof(r.qname)-1);
1812 YYERROR;
1813 }
1814 free($9.queues.qname);
1815 }
1816 if ($9.queues.pqname != NULL) {
1817 if (strlcpy(r.pqname, $9.queues.pqname,
1818 sizeof(r.pqname)) >= sizeof(r.pqname)) {
1819 yyerror("rule pqname too long (max "
1820 "%d chars)", sizeof(r.pqname)-1);
1821 YYERROR;
1822 }
1823 free($9.queues.pqname);
1824 }
1825
1826 expand_rule(&r, $4, $5.host, $7, $8.src_os,
1827 $8.src.host, $8.src.port, $8.dst.host, $8.dst.port,
1828 $9.uid, $9.gid, $9.icmpspec);
1829 }
1830 ;
1831
1832 filter_opts : { bzero(&filter_opts, sizeof filter_opts); }
1833 filter_opts_l
1834 { $$ = filter_opts; }
1835 | /* empty */ {
1836 bzero(&filter_opts, sizeof filter_opts);
1837 $$ = filter_opts;
1838 }
1839 ;
1840
1841 filter_opts_l : filter_opts_l filter_opt
1842 | filter_opt
1843 ;
1844
1845 filter_opt : USER uids {
1846 if (filter_opts.uid)
1847 $2->tail->next = filter_opts.uid;
1848 filter_opts.uid = $2;
1849 }
1850 | GROUP gids {
1851 if (filter_opts.gid)
1852 $2->tail->next = filter_opts.gid;
1853 filter_opts.gid = $2;
1854 }
1855 | flags {
1856 if (filter_opts.marker & FOM_FLAGS) {
1857 yyerror("flags cannot be redefined");
1858 YYERROR;
1859 }
1860 filter_opts.marker |= FOM_FLAGS;
1861 filter_opts.flags.b1 |= $1.b1;
1862 filter_opts.flags.b2 |= $1.b2;
1863 filter_opts.flags.w |= $1.w;
1864 filter_opts.flags.w2 |= $1.w2;
1865 }
1866 | icmpspec {
1867 if (filter_opts.marker & FOM_ICMP) {
1868 yyerror("icmp-type cannot be redefined");
1869 YYERROR;
1870 }
1871 filter_opts.marker |= FOM_ICMP;
1872 filter_opts.icmpspec = $1;
1873 }
1874 | tos {
1875 if (filter_opts.marker & FOM_TOS) {
1876 yyerror("tos cannot be redefined");
1877 YYERROR;
1878 }
1879 filter_opts.marker |= FOM_TOS;
1880 filter_opts.tos = $1;
1881 }
1882 | keep {
1883 if (filter_opts.marker & FOM_KEEP) {
1884 yyerror("modulate or keep cannot be redefined");
1885 YYERROR;
1886 }
1887 filter_opts.marker |= FOM_KEEP;
1888 filter_opts.keep.action = $1.action;
1889 filter_opts.keep.options = $1.options;
1890 }
1891 | FRAGMENT {
1892 filter_opts.fragment = 1;
1893 }
1894 | ALLOWOPTS {
1895 filter_opts.allowopts = 1;
1896 }
1897 | label {
1898 if (filter_opts.label) {
1899 yyerror("label cannot be redefined");
1900 YYERROR;
1901 }
1902 filter_opts.label = $1;
1903 }
1904 | qname {
1905 if (filter_opts.queues.qname) {
1906 yyerror("queue cannot be redefined");
1907 YYERROR;
1908 }
1909 filter_opts.queues = $1;
1910 }
1911 | TAG string {
1912 filter_opts.tag = $2;
1913 }
1914 | not TAGGED string {
1915 filter_opts.match_tag = $3;
1916 filter_opts.match_tag_not = $1;
1917 }
1918 | PROBABILITY STRING {
1919 char *e;
1920 double p = strtod($2, &e);
1921
1922 if (*e == '%') {
1923 p *= 0.01;
1924 e++;
1925 }
1926 if (*e) {
1927 yyerror("invalid probability: %s", $2);
1928 free($2);
1929 YYERROR;
1930 }
1931 p = floor(p * (UINT_MAX+1.0) + 0.5);
1932 if (p < 1.0 || p >= (UINT_MAX+1.0)) {
1933 yyerror("invalid probability: %s", $2);
1934 free($2);
1935 YYERROR;
1936 }
1937 filter_opts.prob = (u_int32_t)p;
1938 free($2);
1939 }
1940 ;
1941
1942 action : PASS { $$.b1 = PF_PASS; $$.b2 = $$.w = 0; }
1943 | BLOCK blockspec { $$ = $2; $$.b1 = PF_DROP; }
1944 ;
1945
1946 blockspec : /* empty */ {
1947 $$.b2 = blockpolicy;
1948 $$.w = returnicmpdefault;
1949 $$.w2 = returnicmp6default;
1950 }
1951 | DROP {
1952 $$.b2 = PFRULE_DROP;
1953 $$.w = 0;
1954 $$.w2 = 0;
1955 }
1956 | RETURNRST {
1957 $$.b2 = PFRULE_RETURNRST;
1958 $$.w = 0;
1959 $$.w2 = 0;
1960 }
1961 | RETURNRST '(' TTL number ')' {
1962 if ($4 > 255) {
1963 yyerror("illegal ttl value %d", $4);
1964 YYERROR;
1965 }
1966 $$.b2 = PFRULE_RETURNRST;
1967 $$.w = $4;
1968 $$.w2 = 0;
1969 }
1970 | RETURNICMP {
1971 $$.b2 = PFRULE_RETURNICMP;
1972 $$.w = returnicmpdefault;
1973 $$.w2 = returnicmp6default;
1974 }
1975 | RETURNICMP6 {
1976 $$.b2 = PFRULE_RETURNICMP;
1977 $$.w = returnicmpdefault;
1978 $$.w2 = returnicmp6default;
1979 }
1980 | RETURNICMP '(' STRING ')' {
1981 $$.b2 = PFRULE_RETURNICMP;
1982 if (!($$.w = parseicmpspec($3, AF_INET))) {
1983 free($3);
1984 YYERROR;
1985 }
1986 free($3);
1987 $$.w2 = returnicmp6default;
1988 }
1989 | RETURNICMP6 '(' STRING ')' {
1990 $$.b2 = PFRULE_RETURNICMP;
1991 $$.w = returnicmpdefault;
1992 if (!($$.w2 = parseicmpspec($3, AF_INET6))) {
1993 free($3);
1994 YYERROR;
1995 }
1996 free($3);
1997 }
1998 | RETURNICMP '(' STRING comma STRING ')' {
1999 $$.b2 = PFRULE_RETURNICMP;
2000 if (!($$.w = parseicmpspec($3, AF_INET)) ||
2001 !($$.w2 = parseicmpspec($5, AF_INET6))) {
2002 free($3);
2003 free($5);
2004 YYERROR;
2005 }
2006 free($3);
2007 free($5);
2008 }
2009 | RETURN {
2010 $$.b2 = PFRULE_RETURN;
2011 $$.w = returnicmpdefault;
2012 $$.w2 = returnicmp6default;
2013 }
2014 ;
2015
2016 dir : /* empty */ { $$ = 0; }
2017 | IN { $$ = PF_IN; }
2018 | OUT { $$ = PF_OUT; }
2019 ;
2020
2021 logquick : /* empty */ { $$.log = 0; $$.quick = 0; }
2022 | log { $$.log = $1; $$.quick = 0; }
2023 | QUICK { $$.log = 0; $$.quick = 1; }
2024 | log QUICK { $$.log = $1; $$.quick = 1; }
2025 | QUICK log { $$.log = $2; $$.quick = 1; }
2026 ;
2027
2028 log : LOG { $$ = 1; }
2029 | LOGALL { $$ = 2; }
2030 ;
2031
2032 interface : /* empty */ { $$ = NULL; }
2033 | ON if_item_not { $$ = $2; }
2034 | ON '{' if_list '}' { $$ = $3; }
2035 ;
2036
2037 if_list : if_item_not { $$ = $1; }
2038 | if_list comma if_item_not {
2039 $1->tail->next = $3;
2040 $1->tail = $3;
2041 $$ = $1;
2042 }
2043 ;
2044
2045 if_item_not : not if_item { $$ = $2; $$->not = $1; }
2046 ;
2047
2048 if_item : STRING {
2049 struct node_host *n;
2050
2051 if ((n = ifa_exists($1, 1)) == NULL) {
2052 yyerror("unknown interface %s", $1);
2053 free($1);
2054 YYERROR;
2055 }
2056 $$ = calloc(1, sizeof(struct node_if));
2057 if ($$ == NULL)
2058 err(1, "if_item: calloc");
2059 if (strlcpy($$->ifname, $1, sizeof($$->ifname)) >=
2060 sizeof($$->ifname)) {
2061 free($1);
2062 free($$);
2063 yyerror("interface name too long");
2064 YYERROR;
2065 }
2066 free($1);
2067 $$->ifa_flags = n->ifa_flags;
2068 $$->not = 0;
2069 $$->next = NULL;
2070 $$->tail = $$;
2071 }
2072 ;
2073
2074 af : /* empty */ { $$ = 0; }
2075 | INET { $$ = AF_INET; }
2076 | INET6 { $$ = AF_INET6; }
2077 ;
2078
2079 proto : /* empty */ { $$ = NULL; }
2080 | PROTO proto_item { $$ = $2; }
2081 | PROTO '{' proto_list '}' { $$ = $3; }
2082 ;
2083
2084 proto_list : proto_item { $$ = $1; }
2085 | proto_list comma proto_item {
2086 $1->tail->next = $3;
2087 $1->tail = $3;
2088 $$ = $1;
2089 }
2090 ;
2091
2092 proto_item : STRING {
2093 u_int8_t pr;
2094 u_long ulval;
2095
2096 if (atoul($1, &ulval) == 0) {
2097 if (ulval > 255) {
2098 yyerror("protocol outside range");
2099 free($1);
2100 YYERROR;
2101 }
2102 pr = (u_int8_t)ulval;
2103 } else {
2104 struct protoent *p;
2105
2106 p = getprotobyname($1);
2107 if (p == NULL) {
2108 yyerror("unknown protocol %s", $1);
2109 free($1);
2110 YYERROR;
2111 }
2112 pr = p->p_proto;
2113 }
2114 free($1);
2115 if (pr == 0) {
2116 yyerror("proto 0 cannot be used");
2117 YYERROR;
2118 }
2119 $$ = calloc(1, sizeof(struct node_proto));
2120 if ($$ == NULL)
2121 err(1, "proto_item: calloc");
2122 $$->proto = pr;
2123 $$->next = NULL;
2124 $$->tail = $$;
2125 }
2126 ;
2127
2128 fromto : ALL {
2129 $$.src.host = NULL;
2130 $$.src.port = NULL;
2131 $$.dst.host = NULL;
2132 $$.dst.port = NULL;
2133 $$.src_os = NULL;
2134 }
2135 | from os to {
2136 $$.src = $1;
2137 $$.src_os = $2;
2138 $$.dst = $3;
2139 }
2140 ;
2141
2142 os : /* empty */ { $$ = NULL; }
2143 | OS xos { $$ = $2; }
2144 | OS '{' os_list '}' { $$ = $3; }
2145 ;
2146
2147 xos : STRING {
2148 $$ = calloc(1, sizeof(struct node_os));
2149 if ($$ == NULL)
2150 err(1, "os: calloc");
2151 $$->os = $1;
2152 $$->tail = $$;
2153 }
2154 ;
2155
2156 os_list : xos { $$ = $1; }
2157 | os_list comma xos {
2158 $1->tail->next = $3;
2159 $1->tail = $3;
2160 $$ = $1;
2161 }
2162 ;
2163
2164 from : /* empty */ {
2165 $$.host = NULL;
2166 $$.port = NULL;
2167 }
2168 | FROM ipportspec {
2169 $$ = $2;
2170 }
2171 ;
2172
2173 to : /* empty */ {
2174 $$.host = NULL;
2175 $$.port = NULL;
2176 }
2177 | TO ipportspec {
2178 $$ = $2;
2179 }
2180 ;
2181
2182 ipportspec : ipspec {
2183 $$.host = $1;
2184 $$.port = NULL;
2185 }
2186 | ipspec PORT portspec {
2187 $$.host = $1;
2188 $$.port = $3;
2189 }
2190 | PORT portspec {
2191 $$.host = NULL;
2192 $$.port = $2;
2193 }
2194 ;
2195
2196 ipspec : ANY { $$ = NULL; }
2197 | xhost { $$ = $1; }
2198 | '{' host_list '}' { $$ = $2; }
2199 ;
2200
2201 host_list : xhost { $$ = $1; }
2202 | host_list comma xhost {
2203 if ($3 == NULL)
2204 $$ = $1;
2205 else if ($1 == NULL)
2206 $$ = $3;
2207 else {
2208 $1->tail->next = $3;
2209 $1->tail = $3->tail;
2210 $$ = $1;
2211 }
2212 }
2213 ;
2214
2215 xhost : not host {
2216 struct node_host *n;
2217
2218 for (n = $2; n != NULL; n = n->next)
2219 n->not = $1;
2220 $$ = $2;
2221 }
2222 | NOROUTE {
2223 $$ = calloc(1, sizeof(struct node_host));
2224 if ($$ == NULL)
2225 err(1, "xhost: calloc");
2226 $$->addr.type = PF_ADDR_NOROUTE;
2227 $$->next = NULL;
2228 $$->tail = $$;
2229 }
2230 ;
2231
2232 host : STRING {
2233 if (($$ = host($1)) == NULL) {
2234 /* error. "any" is handled elsewhere */
2235 free($1);
2236 yyerror("could not parse host specification");
2237 YYERROR;
2238 }
2239 free($1);
2240
2241 }
2242 | STRING '/' number {
2243 char *buf;
2244
2245 if (asprintf(&buf, "%s/%u", $1, $3) == -1)
2246 err(1, "host: asprintf");
2247 free($1);
2248 if (($$ = host(buf)) == NULL) {
2249 /* error. "any" is handled elsewhere */
2250 free(buf);
2251 yyerror("could not parse host specification");
2252 YYERROR;
2253 }
2254 free(buf);
2255 }
2256 | dynaddr
2257 | dynaddr '/' number {
2258 struct node_host *n;
2259
2260 $$ = $1;
2261 for (n = $1; n != NULL; n = n->next)
2262 set_ipmask(n, $3);
2263 }
2264 | '<' STRING '>' {
2265 if (strlen($2) >= PF_TABLE_NAME_SIZE) {
2266 yyerror("table name '%s' too long", $2);
2267 free($2);
2268 YYERROR;
2269 }
2270 $$ = calloc(1, sizeof(struct node_host));
2271 if ($$ == NULL)
2272 err(1, "host: calloc");
2273 $$->addr.type = PF_ADDR_TABLE;
2274 if (strlcpy($$->addr.v.tblname, $2,
2275 sizeof($$->addr.v.tblname)) >=
2276 sizeof($$->addr.v.tblname))
2277 errx(1, "host: strlcpy");
2278 free($2);
2279 $$->next = NULL;
2280 $$->tail = $$;
2281 }
2282 ;
2283
2284 number : STRING {
2285 u_long ulval;
2286
2287 if (atoul($1, &ulval) == -1) {
2288 yyerror("%s is not a number", $1);
2289 free($1);
2290 YYERROR;
2291 } else
2292 $$ = ulval;
2293 free($1);
2294 }
2295 ;
2296
2297 dynaddr : '(' STRING ')' {
2298 int flags = 0;
2299 char *p, *op;
2300
2301 op = $2;
2302 while ((p = strrchr($2, ':')) != NULL) {
2303 if (!strcmp(p+1, "network"))
2304 flags |= PFI_AFLAG_NETWORK;
2305 else if (!strcmp(p+1, "broadcast"))
2306 flags |= PFI_AFLAG_BROADCAST;
2307 else if (!strcmp(p+1, "peer"))
2308 flags |= PFI_AFLAG_PEER;
2309 else if (!strcmp(p+1, "0"))
2310 flags |= PFI_AFLAG_NOALIAS;
2311 else {
2312 yyerror("interface %s has bad modifier",
2313 $2);
2314 free(op);
2315 YYERROR;
2316 }
2317 *p = '\0';
2318 }
2319 if (flags & (flags - 1) & PFI_AFLAG_MODEMASK) {
2320 free(op);
2321 yyerror("illegal combination of "
2322 "interface modifiers");
2323 YYERROR;
2324 }
2325 if (ifa_exists($2, 1) == NULL && strcmp($2, "self")) {
2326 yyerror("interface %s does not exist", $2);
2327 free(op);
2328 YYERROR;
2329 }
2330 $$ = calloc(1, sizeof(struct node_host));
2331 if ($$ == NULL)
2332 err(1, "address: calloc");
2333 $$->af = 0;
2334 set_ipmask($$, 128);
2335 $$->addr.type = PF_ADDR_DYNIFTL;
2336 $$->addr.iflags = flags;
2337 if (strlcpy($$->addr.v.ifname, $2,
2338 sizeof($$->addr.v.ifname)) >=
2339 sizeof($$->addr.v.ifname)) {
2340 free(op);
2341 free($$);
2342 yyerror("interface name too long");
2343 YYERROR;
2344 }
2345 free(op);
2346 $$->next = NULL;
2347 $$->tail = $$;
2348 }
2349 ;
2350
2351 portspec : port_item { $$ = $1; }
2352 | '{' port_list '}' { $$ = $2; }
2353 ;
2354
2355 port_list : port_item { $$ = $1; }
2356 | port_list comma port_item {
2357 $1->tail->next = $3;
2358 $1->tail = $3;
2359 $$ = $1;
2360 }
2361 ;
2362
2363 port_item : port {
2364 $$ = calloc(1, sizeof(struct node_port));
2365 if ($$ == NULL)
2366 err(1, "port_item: calloc");
2367 $$->port[0] = $1.a;
2368 $$->port[1] = $1.b;
2369 if ($1.t)
2370 $$->op = PF_OP_RRG;
2371 else
2372 $$->op = PF_OP_EQ;
2373 $$->next = NULL;
2374 $$->tail = $$;
2375 }
2376 | unaryop port {
2377 if ($2.t) {
2378 yyerror("':' cannot be used with an other "
2379 "port operator");
2380 YYERROR;
2381 }
2382 $$ = calloc(1, sizeof(struct node_port));
2383 if ($$ == NULL)
2384 err(1, "port_item: calloc");
2385 $$->port[0] = $2.a;
2386 $$->port[1] = $2.b;
2387 $$->op = $1;
2388 $$->next = NULL;
2389 $$->tail = $$;
2390 }
2391 | port PORTBINARY port {
2392 if ($1.t || $3.t) {
2393 yyerror("':' cannot be used with an other "
2394 "port operator");
2395 YYERROR;
2396 }
2397 $$ = calloc(1, sizeof(struct node_port));
2398 if ($$ == NULL)
2399 err(1, "port_item: calloc");
2400 $$->port[0] = $1.a;
2401 $$->port[1] = $3.a;
2402 $$->op = $2;
2403 $$->next = NULL;
2404 $$->tail = $$;
2405 }
2406 ;
2407
2408 port : STRING {
2409 char *p = strchr($1, ':');
2410 struct servent *s = NULL;
2411 u_long ulval;
2412
2413 if (p == NULL) {
2414 if (atoul($1, &ulval) == 0) {
2415 if (ulval > 65535) {
2416 free($1);
2417 yyerror("illegal port value %d",
2418 ulval);
2419 YYERROR;
2420 }
2421 $$.a = htons(ulval);
2422 } else {
2423 s = getservbyname($1, "tcp");
2424 if (s == NULL)
2425 s = getservbyname($1, "udp");
2426 if (s == NULL) {
2427 yyerror("unknown port %s", $1);
2428 free($1);
2429 YYERROR;
2430 }
2431 $$.a = s->s_port;
2432 }
2433 $$.b = 0;
2434 $$.t = 0;
2435 } else {
2436 int port[2];
2437
2438 *p++ = 0;
2439 if ((port[0] = getservice($1)) == -1 ||
2440 (port[1] = getservice(p)) == -1) {
2441 free($1);
2442 YYERROR;
2443 }
2444 $$.a = port[0];
2445 $$.b = port[1];
2446 $$.t = PF_OP_RRG;
2447 }
2448 free($1);
2449 }
2450 ;
2451
2452 uids : uid_item { $$ = $1; }
2453 | '{' uid_list '}' { $$ = $2; }
2454 ;
2455
2456 uid_list : uid_item { $$ = $1; }
2457 | uid_list comma uid_item {
2458 $1->tail->next = $3;
2459 $1->tail = $3;
2460 $$ = $1;
2461 }
2462 ;
2463
2464 uid_item : uid {
2465 $$ = calloc(1, sizeof(struct node_uid));
2466 if ($$ == NULL)
2467 err(1, "uid_item: calloc");
2468 $$->uid[0] = $1;
2469 $$->uid[1] = $1;
2470 $$->op = PF_OP_EQ;
2471 $$->next = NULL;
2472 $$->tail = $$;
2473 }
2474 | unaryop uid {
2475 if ($2 == UID_MAX && $1 != PF_OP_EQ && $1 != PF_OP_NE) {
2476 yyerror("user unknown requires operator = or "
2477 "!=");
2478 YYERROR;
2479 }
2480 $$ = calloc(1, sizeof(struct node_uid));
2481 if ($$ == NULL)
2482 err(1, "uid_item: calloc");
2483 $$->uid[0] = $2;
2484 $$->uid[1] = $2;
2485 $$->op = $1;
2486 $$->next = NULL;
2487 $$->tail = $$;
2488 }
2489 | uid PORTBINARY uid {
2490 if ($1 == UID_MAX || $3 == UID_MAX) {
2491 yyerror("user unknown requires operator = or "
2492 "!=");
2493 YYERROR;
2494 }
2495 $$ = calloc(1, sizeof(struct node_uid));
2496 if ($$ == NULL)
2497 err(1, "uid_item: calloc");
2498 $$->uid[0] = $1;
2499 $$->uid[1] = $3;
2500 $$->op = $2;
2501 $$->next = NULL;
2502 $$->tail = $$;
2503 }
2504 ;
2505
2506 uid : STRING {
2507 u_long ulval;
2508
2509 if (atoul($1, &ulval) == -1) {
2510 if (!strcmp($1, "unknown"))
2511 $$ = UID_MAX;
2512 else {
2513 struct passwd *pw;
2514
2515 if ((pw = getpwnam($1)) == NULL) {
2516 yyerror("unknown user %s", $1);
2517 free($1);
2518 YYERROR;
2519 }
2520 $$ = pw->pw_uid;
2521 }
2522 } else {
2523 if (ulval >= UID_MAX) {
2524 free($1);
2525 yyerror("illegal uid value %lu", ulval);
2526 YYERROR;
2527 }
2528 $$ = ulval;
2529 }
2530 free($1);
2531 }
2532 ;
2533
2534 gids : gid_item { $$ = $1; }
2535 | '{' gid_list '}' { $$ = $2; }
2536 ;
2537
2538 gid_list : gid_item { $$ = $1; }
2539 | gid_list comma gid_item {
2540 $1->tail->next = $3;
2541 $1->tail = $3;
2542 $$ = $1;
2543 }
2544 ;
2545
2546 gid_item : gid {
2547 $$ = calloc(1, sizeof(struct node_gid));
2548 if ($$ == NULL)
2549 err(1, "gid_item: calloc");
2550 $$->gid[0] = $1;
2551 $$->gid[1] = $1;
2552 $$->op = PF_OP_EQ;
2553 $$->next = NULL;
2554 $$->tail = $$;
2555 }
2556 | unaryop gid {
2557 if ($2 == GID_MAX && $1 != PF_OP_EQ && $1 != PF_OP_NE) {
2558 yyerror("group unknown requires operator = or "
2559 "!=");
2560 YYERROR;
2561 }
2562 $$ = calloc(1, sizeof(struct node_gid));
2563 if ($$ == NULL)
2564 err(1, "gid_item: calloc");
2565 $$->gid[0] = $2;
2566 $$->gid[1] = $2;
2567 $$->op = $1;
2568 $$->next = NULL;
2569 $$->tail = $$;
2570 }
2571 | gid PORTBINARY gid {
2572 if ($1 == GID_MAX || $3 == GID_MAX) {
2573 yyerror("group unknown requires operator = or "
2574 "!=");
2575 YYERROR;
2576 }
2577 $$ = calloc(1, sizeof(struct node_gid));
2578 if ($$ == NULL)
2579 err(1, "gid_item: calloc");
2580 $$->gid[0] = $1;
2581 $$->gid[1] = $3;
2582 $$->op = $2;
2583 $$->next = NULL;
2584 $$->tail = $$;
2585 }
2586 ;
2587
2588 gid : STRING {
2589 u_long ulval;
2590
2591 if (atoul($1, &ulval) == -1) {
2592 if (!strcmp($1, "unknown"))
2593 $$ = GID_MAX;
2594 else {
2595 struct group *grp;
2596
2597 if ((grp = getgrnam($1)) == NULL) {
2598 yyerror("unknown group %s", $1);
2599 free($1);
2600 YYERROR;
2601 }
2602 $$ = grp->gr_gid;
2603 }
2604 } else {
2605 if (ulval >= GID_MAX) {
2606 yyerror("illegal gid value %lu", ulval);
2607 free($1);
2608 YYERROR;
2609 }
2610 $$ = ulval;
2611 }
2612 free($1);
2613 }
2614 ;
2615
2616 flag : STRING {
2617 int f;
2618
2619 if ((f = parse_flags($1)) < 0) {
2620 yyerror("bad flags %s", $1);
2621 free($1);
2622 YYERROR;
2623 }
2624 free($1);
2625 $$.b1 = f;
2626 }
2627 ;
2628
2629 flags : FLAGS flag '/' flag { $$.b1 = $2.b1; $$.b2 = $4.b1; }
2630 | FLAGS '/' flag { $$.b1 = 0; $$.b2 = $3.b1; }
2631 ;
2632
2633 icmpspec : ICMPTYPE icmp_item { $$ = $2; }
2634 | ICMPTYPE '{' icmp_list '}' { $$ = $3; }
2635 | ICMP6TYPE icmp6_item { $$ = $2; }
2636 | ICMP6TYPE '{' icmp6_list '}' { $$ = $3; }
2637 ;
2638
2639 icmp_list : icmp_item { $$ = $1; }
2640 | icmp_list comma icmp_item {
2641 $1->tail->next = $3;
2642 $1->tail = $3;
2643 $$ = $1;
2644 }
2645 ;
2646
2647 icmp6_list : icmp6_item { $$ = $1; }
2648 | icmp6_list comma icmp6_item {
2649 $1->tail->next = $3;
2650 $1->tail = $3;
2651 $$ = $1;
2652 }
2653 ;
2654
2655 icmp_item : icmptype {
2656 $$ = calloc(1, sizeof(struct node_icmp));
2657 if ($$ == NULL)
2658 err(1, "icmp_item: calloc");
2659 $$->type = $1;
2660 $$->code = 0;
2661 $$->proto = IPPROTO_ICMP;
2662 $$->next = NULL;
2663 $$->tail = $$;
2664 }
2665 | icmptype CODE STRING {
2666 const struct icmpcodeent *p;
2667 u_long ulval;
2668
2669 if (atoul($3, &ulval) == 0) {
2670 if (ulval > 255) {
2671 free($3);
2672 yyerror("illegal icmp-code %d", ulval);
2673 YYERROR;
2674 }
2675 } else {
2676 if ((p = geticmpcodebyname($1-1, $3,
2677 AF_INET)) == NULL) {
2678 yyerror("unknown icmp-code %s", $3);
2679 free($3);
2680 YYERROR;
2681 }
2682 ulval = p->code;
2683 }
2684 free($3);
2685 $$ = calloc(1, sizeof(struct node_icmp));
2686 if ($$ == NULL)
2687 err(1, "icmp_item: calloc");
2688 $$->type = $1;
2689 $$->code = ulval + 1;
2690 $$->proto = IPPROTO_ICMP;
2691 $$->next = NULL;
2692 $$->tail = $$;
2693 }
2694 ;
2695
2696 icmp6_item : icmp6type {
2697 $$ = calloc(1, sizeof(struct node_icmp));
2698 if ($$ == NULL)
2699 err(1, "icmp_item: calloc");
2700 $$->type = $1;
2701 $$->code = 0;
2702 $$->proto = IPPROTO_ICMPV6;
2703 $$->next = NULL;
2704 $$->tail = $$;
2705 }
2706 | icmp6type CODE STRING {
2707 const struct icmpcodeent *p;
2708 u_long ulval;
2709
2710 if (atoul($3, &ulval) == 0) {
2711 if (ulval > 255) {
2712 yyerror("illegal icmp6-code %ld",
2713 ulval);
2714 free($3);
2715 YYERROR;
2716 }
2717 } else {
2718 if ((p = geticmpcodebyname($1-1, $3,
2719 AF_INET6)) == NULL) {
2720 yyerror("unknown icmp6-code %s", $3);
2721 free($3);
2722 YYERROR;
2723 }
2724 ulval = p->code;
2725 }
2726 free($3);
2727 $$ = calloc(1, sizeof(struct node_icmp));
2728 if ($$ == NULL)
2729 err(1, "icmp_item: calloc");
2730 $$->type = $1;
2731 $$->code = ulval + 1;
2732 $$->proto = IPPROTO_ICMPV6;
2733 $$->next = NULL;
2734 $$->tail = $$;
2735 }
2736 ;
2737
2738 icmptype : STRING {
2739 const struct icmptypeent *p;
2740 u_long ulval;
2741
2742 if (atoul($1, &ulval) == 0) {
2743 if (ulval > 255) {
2744 yyerror("illegal icmp-type %d", ulval);
2745 free($1);
2746 YYERROR;
2747 }
2748 $$ = ulval + 1;
2749 } else {
2750 if ((p = geticmptypebyname($1, AF_INET)) ==
2751 NULL) {
2752 yyerror("unknown icmp-type %s", $1);
2753 free($1);
2754 YYERROR;
2755 }
2756 $$ = p->type + 1;
2757 }
2758 free($1);
2759 }
2760 ;
2761
2762 icmp6type : STRING {
2763 const struct icmptypeent *p;
2764 u_long ulval;
2765
2766 if (atoul($1, &ulval) == 0) {
2767 if (ulval > 255) {
2768 yyerror("illegal icmp6-type %d", ulval);
2769 free($1);
2770 YYERROR;
2771 }
2772 $$ = ulval + 1;
2773 } else {
2774 if ((p = geticmptypebyname($1, AF_INET6)) ==
2775 NULL) {
2776 yyerror("unknown icmp6-type %s", $1);
2777 free($1);
2778 YYERROR;
2779 }
2780 $$ = p->type + 1;
2781 }
2782 free($1);
2783 }
2784 ;
2785
2786 tos : TOS STRING {
2787 if (!strcmp($2, "lowdelay"))
2788 $$ = IPTOS_LOWDELAY;
2789 else if (!strcmp($2, "throughput"))
2790 $$ = IPTOS_THROUGHPUT;
2791 else if (!strcmp($2, "reliability"))
2792 $$ = IPTOS_RELIABILITY;
2793 else if ($2[0] == '0' && $2[1] == 'x')
2794 $$ = strtoul($2, NULL, 16);
2795 else
2796 $$ = strtoul($2, NULL, 10);
2797 if (!$$ || $$ > 255) {
2798 yyerror("illegal tos value %s", $2);
2799 free($2);
2800 YYERROR;
2801 }
2802 free($2);
2803 }
2804 ;
2805
2806 sourcetrack : SOURCETRACK { $$ = PF_SRCTRACK; }
2807 | SOURCETRACK GLOBAL { $$ = PF_SRCTRACK_GLOBAL; }
2808 | SOURCETRACK RULE { $$ = PF_SRCTRACK_RULE; }
2809 ;
2810
2811 statelock : IFBOUND {
2812 $$ = PFRULE_IFBOUND;
2813 }
2814 | GRBOUND {
2815 $$ = PFRULE_GRBOUND;
2816 }
2817 | FLOATING {
2818 $$ = 0;
2819 }
2820 ;
2821
2822 keep : NO STATE {
2823 $$.action = 0;
2824 $$.options = NULL;
2825 }
2826 | KEEP STATE state_opt_spec {
2827 $$.action = PF_STATE_NORMAL;
2828 $$.options = $3;
2829 }
2830 | MODULATE STATE state_opt_spec {
2831 $$.action = PF_STATE_MODULATE;
2832 $$.options = $3;
2833 }
2834 | SYNPROXY STATE state_opt_spec {
2835 $$.action = PF_STATE_SYNPROXY;
2836 $$.options = $3;
2837 }
2838 ;
2839
2840 state_opt_spec : '(' state_opt_list ')' { $$ = $2; }
2841 | /* empty */ { $$ = NULL; }
2842 ;
2843
2844 state_opt_list : state_opt_item { $$ = $1; }
2845 | state_opt_list comma state_opt_item {
2846 $1->tail->next = $3;
2847 $1->tail = $3;
2848 $$ = $1;
2849 }
2850 ;
2851
2852 state_opt_item : MAXIMUM number {
2853 $$ = calloc(1, sizeof(struct node_state_opt));
2854 if ($$ == NULL)
2855 err(1, "state_opt_item: calloc");
2856 $$->type = PF_STATE_OPT_MAX;
2857 $$->data.max_states = $2;
2858 $$->next = NULL;
2859 $$->tail = $$;
2860 }
2861 | NOSYNC {
2862 $$ = calloc(1, sizeof(struct node_state_opt));
2863 if ($$ == NULL)
2864 err(1, "state_opt_item: calloc");
2865 $$->type = PF_STATE_OPT_NOSYNC;
2866 $$->next = NULL;
2867 $$->tail = $$;
2868 }
2869 | MAXSRCSTATES number {
2870 $$ = calloc(1, sizeof(struct node_state_opt));
2871 if ($$ == NULL)
2872 err(1, "state_opt_item: calloc");
2873 $$->type = PF_STATE_OPT_MAX_SRC_STATES;
2874 $$->data.max_src_states = $2;
2875 $$->next = NULL;
2876 $$->tail = $$;
2877 }
2878 | MAXSRCNODES number {
2879 $$ = calloc(1, sizeof(struct node_state_opt));
2880 if ($$ == NULL)
2881 err(1, "state_opt_item: calloc");
2882 $$->type = PF_STATE_OPT_MAX_SRC_NODES;
2883 $$->data.max_src_nodes = $2;
2884 $$->next = NULL;
2885 $$->tail = $$;
2886 }
2887 | PICKUPS {
2888 $$ = calloc(1, sizeof(struct node_state_opt));
2889 if ($$ == NULL)
2890 err(1, "state_opt_item: calloc");
2891 $$->type = PF_STATE_OPT_PICKUPS;
2892 $$->data.pickup_mode = PF_PICKUPS_ENABLED;
2893 $$->next = NULL;
2894 $$->tail = $$;
2895 }
2896 | NOPICKUPS {
2897 $$ = calloc(1, sizeof(struct node_state_opt));
2898 if ($$ == NULL)
2899 err(1, "state_opt_item: calloc");
2900 $$->type = PF_STATE_OPT_PICKUPS;
2901 $$->data.pickup_mode = PF_PICKUPS_DISABLED;
2902 $$->next = NULL;
2903 $$->tail = $$;
2904 }
2905 | HASHONLY {
2906 $$ = calloc(1, sizeof(struct node_state_opt));
2907 if ($$ == NULL)
2908 err(1, "state_opt_item: calloc");
2909 $$->type = PF_STATE_OPT_PICKUPS;
2910 $$->data.pickup_mode = PF_PICKUPS_HASHONLY;
2911 $$->next = NULL;
2912 $$->tail = $$;
2913 }
2914 | sourcetrack {
2915 $$ = calloc(1, sizeof(struct node_state_opt));
2916 if ($$ == NULL)
2917 err(1, "state_opt_item: calloc");
2918 $$->type = PF_STATE_OPT_SRCTRACK;
2919 $$->data.src_track = $1;
2920 $$->next = NULL;
2921 $$->tail = $$;
2922 }
2923 | statelock {
2924 $$ = calloc(1, sizeof(struct node_state_opt));
2925 if ($$ == NULL)
2926 err(1, "state_opt_item: calloc");
2927 $$->type = PF_STATE_OPT_STATELOCK;
2928 $$->data.statelock = $1;
2929 $$->next = NULL;
2930 $$->tail = $$;
2931 }
2932 | STRING number {
2933 int i;
2934
2935 for (i = 0; pf_timeouts[i].name &&
2936 strcmp(pf_timeouts[i].name, $1); ++i)
2937 ; /* nothing */
2938 if (!pf_timeouts[i].name) {
2939 yyerror("illegal timeout name %s", $1);
2940 free($1);
2941 YYERROR;
2942 }
2943 if (strchr(pf_timeouts[i].name, '.') == NULL) {
2944 yyerror("illegal state timeout %s", $1);
2945 free($1);
2946 YYERROR;
2947 }
2948 free($1);
2949 $$ = calloc(1, sizeof(struct node_state_opt));
2950 if ($$ == NULL)
2951 err(1, "state_opt_item: calloc");
2952 $$->type = PF_STATE_OPT_TIMEOUT;
2953 $$->data.timeout.number = pf_timeouts[i].timeout;
2954 $$->data.timeout.seconds = $2;
2955 $$->next = NULL;
2956 $$->tail = $$;
2957 }
2958 ;
2959
2960 label : LABEL STRING {
2961 $$ = $2;
2962 }
2963 ;
2964
2965 qname : QUEUE STRING {
2966 $$.qname = $2;
2967 }
2968 | QUEUE '(' STRING ')' {
2969 $$.qname = $3;
2970 }
2971 | QUEUE '(' STRING comma STRING ')' {
2972 $$.qname = $3;
2973 $$.pqname = $5;
2974 }
2975 ;
2976
2977 no : /* empty */ { $$ = 0; }
2978 | NO { $$ = 1; }
2979 ;
2980
2981 rport : STRING {
2982 char *p = strchr($1, ':');
2983
2984 if (p == NULL) {
2985 if (($$.a = getservice($1)) == -1) {
2986 free($1);
2987 YYERROR;
2988 }
2989 $$.b = $$.t = 0;
2990 } else if (!strcmp(p+1, "*")) {
2991 *p = 0;
2992 if (($$.a = getservice($1)) == -1) {
2993 free($1);
2994 YYERROR;
2995 }
2996 $$.b = 0;
2997 $$.t = 1;
2998 } else {
2999 *p++ = 0;
3000 if (($$.a = getservice($1)) == -1 ||
3001 ($$.b = getservice(p)) == -1) {
3002 free($1);
3003 YYERROR;
3004 }
3005 if ($$.a == $$.b)
3006 $$.b = 0;
3007 $$.t = 0;
3008 }
3009 free($1);
3010 }
3011 ;
3012
3013 redirspec : host { $$ = $1; }
3014 | '{' redir_host_list '}' { $$ = $2; }
3015 ;
3016
3017 redir_host_list : host { $$ = $1; }
3018 | redir_host_list comma host {
3019 $1->tail->next = $3;
3020 $1->tail = $3->tail;
3021 $$ = $1;
3022 }
3023 ;
3024
3025 redirpool : /* empty */ { $$ = NULL; }
3026 | ARROW redirspec {
3027 $$ = calloc(1, sizeof(struct redirection));
3028 if ($$ == NULL)
3029 err(1, "redirection: calloc");
3030 $$->host = $2;
3031 $$->rport.a = $$->rport.b = $$->rport.t = 0;
3032 }
3033 | ARROW redirspec PORT rport {
3034 $$ = calloc(1, sizeof(struct redirection));
3035 if ($$ == NULL)
3036 err(1, "redirection: calloc");
3037 $$->host = $2;
3038 $$->rport = $4;
3039 }
3040 ;
3041
3042 hashkey : /* empty */
3043 {
3044 $$ = calloc(1, sizeof(struct pf_poolhashkey));
3045 if ($$ == NULL)
3046 err(1, "hashkey: calloc");
3047 $$->key32[0] = arc4random();
3048 $$->key32[1] = arc4random();
3049 $$->key32[2] = arc4random();
3050 $$->key32[3] = arc4random();
3051 }
3052 | string
3053 {
3054 if (!strncmp($1, "0x", 2)) {
3055 if (strlen($1) != 34) {
3056 free($1);
3057 yyerror("hex key must be 128 bits "
3058 "(32 hex digits) long");
3059 YYERROR;
3060 }
3061 $$ = calloc(1, sizeof(struct pf_poolhashkey));
3062 if ($$ == NULL)
3063 err(1, "hashkey: calloc");
3064
3065 if (sscanf($1, "0x%8x%8x%8x%8x",
3066 &$$->key32[0], &$$->key32[1],
3067 &$$->key32[2], &$$->key32[3]) != 4) {
3068 free($$);
3069 free($1);
3070 yyerror("invalid hex key");
3071 YYERROR;
3072 }
3073 } else {
3074 MD5_CTX context;
3075
3076 $$ = calloc(1, sizeof(struct pf_poolhashkey));
3077 if ($$ == NULL)
3078 err(1, "hashkey: calloc");
3079 MD5Init(&context);
3080 MD5Update(&context, (unsigned char *)$1,
3081 strlen($1));
3082 MD5Final((unsigned char *)$$, &context);
3083 $$->key32[0] = htonl($$->key32[0]);
3084 $$->key32[1] = htonl($$->key32[1]);
3085 $$->key32[2] = htonl($$->key32[2]);
3086 $$->key32[3] = htonl($$->key32[3]);
3087 }
3088 free($1);
3089 }
3090 ;
3091
3092 pool_opts : { bzero(&pool_opts, sizeof pool_opts); }
3093 pool_opts_l
3094 { $$ = pool_opts; }
3095 | /* empty */ {
3096 bzero(&pool_opts, sizeof pool_opts);
3097 $$ = pool_opts;
3098 }
3099 ;
3100
3101 pool_opts_l : pool_opts_l pool_opt
3102 | pool_opt
3103 ;
3104
3105 pool_opt : BITMASK {
3106 if (pool_opts.type) {
3107 yyerror("pool type cannot be redefined");
3108 YYERROR;
3109 }
3110 pool_opts.type = PF_POOL_BITMASK;
3111 }
3112 | RANDOM {
3113 if (pool_opts.type) {
3114 yyerror("pool type cannot be redefined");
3115 YYERROR;
3116 }
3117 pool_opts.type = PF_POOL_RANDOM;
3118 }
3119 | SOURCEHASH hashkey {
3120 if (pool_opts.type) {
3121 yyerror("pool type cannot be redefined");
3122 YYERROR;
3123 }
3124 pool_opts.type = PF_POOL_SRCHASH;
3125 pool_opts.key = $2;
3126 }
3127 | ROUNDROBIN {
3128 if (pool_opts.type) {
3129 yyerror("pool type cannot be redefined");
3130 YYERROR;
3131 }
3132 pool_opts.type = PF_POOL_ROUNDROBIN;
3133 }
3134 | STATICPORT {
3135 if (pool_opts.staticport) {
3136 yyerror("static-port cannot be redefined");
3137 YYERROR;
3138 }
3139 pool_opts.staticport = 1;
3140 }
3141 | STICKYADDRESS {
3142 if (filter_opts.marker & POM_STICKYADDRESS) {
3143 yyerror("sticky-address cannot be redefined");
3144 YYERROR;
3145 }
3146 pool_opts.marker |= POM_STICKYADDRESS;
3147 pool_opts.opts |= PF_POOL_STICKYADDR;
3148 }
3149 ;
3150
3151 redirection : /* empty */ { $$ = NULL; }
3152 | ARROW host {
3153 $$ = calloc(1, sizeof(struct redirection));
3154 if ($$ == NULL)
3155 err(1, "redirection: calloc");
3156 $$->host = $2;
3157 $$->rport.a = $$->rport.b = $$->rport.t = 0;
3158 }
3159 | ARROW host PORT rport {
3160 $$ = calloc(1, sizeof(struct redirection));
3161 if ($$ == NULL)
3162 err(1, "redirection: calloc");
3163 $$->host = $2;
3164 $$->rport = $4;
3165 }
3166 ;
3167
3168 natpass : /* empty */ { $$ = 0; }
3169 | PASS { $$ = 1; }
3170 ;
3171
3172 nataction : no NAT natpass {
3173 $$.b2 = $$.w = 0;
3174 if ($1)
3175 $$.b1 = PF_NONAT;
3176 else
3177 $$.b1 = PF_NAT;
3178 $$.b2 = $3;
3179 }
3180 | no RDR natpass {
3181 $$.b2 = $$.w = 0;
3182 if ($1)
3183 $$.b1 = PF_NORDR;
3184 else
3185 $$.b1 = PF_RDR;
3186 $$.b2 = $3;
3187 }
3188 ;
3189
3190 natrule : nataction interface af proto fromto tag redirpool pool_opts
3191 {
3192 struct pf_rule r;
3193
3194 if (check_rulestate(PFCTL_STATE_NAT))
3195 YYERROR;
3196
3197 memset(&r, 0, sizeof(r));
3198
3199 r.action = $1.b1;
3200 r.natpass = $1.b2;
3201 r.af = $3;
3202
3203 if (!r.af) {
3204 if ($5.src.host && $5.src.host->af &&
3205 !$5.src.host->ifindex)
3206 r.af = $5.src.host->af;
3207 else if ($5.dst.host && $5.dst.host->af &&
3208 !$5.dst.host->ifindex)
3209 r.af = $5.dst.host->af;
3210 }
3211
3212 if ($6 != NULL)
3213 if (strlcpy(r.tagname, $6, PF_TAG_NAME_SIZE) >=
3214 PF_TAG_NAME_SIZE) {
3215 yyerror("tag too long, max %u chars",
3216 PF_TAG_NAME_SIZE - 1);
3217 YYERROR;
3218 }
3219
3220 if (r.action == PF_NONAT || r.action == PF_NORDR) {
3221 if ($7 != NULL) {
3222 yyerror("translation rule with 'no' "
3223 "does not need '->'");
3224 YYERROR;
3225 }
3226 } else {
3227 if ($7 == NULL || $7->host == NULL) {
3228 yyerror("translation rule requires '-> "
3229 "address'");
3230 YYERROR;
3231 }
3232 if (!r.af && ! $7->host->ifindex)
3233 r.af = $7->host->af;
3234
3235 remove_invalid_hosts(&$7->host, &r.af);
3236 if (invalid_redirect($7->host, r.af))
3237 YYERROR;
3238 if (check_netmask($7->host, r.af))
3239 YYERROR;
3240
3241 r.rpool.proxy_port[0] = ntohs($7->rport.a);
3242
3243 switch (r.action) {
3244 case PF_RDR:
3245 if (!$7->rport.b && $7->rport.t &&
3246 $5.dst.port != NULL) {
3247 r.rpool.proxy_port[1] =
3248 ntohs($7->rport.a) +
3249 (ntohs(
3250 $5.dst.port->port[1]) -
3251 ntohs(
3252 $5.dst.port->port[0]));
3253 } else
3254 r.rpool.proxy_port[1] =
3255 ntohs($7->rport.b);
3256 break;
3257 case PF_NAT:
3258 r.rpool.proxy_port[1] =
3259 ntohs($7->rport.b);
3260 if (!r.rpool.proxy_port[0] &&
3261 !r.rpool.proxy_port[1]) {
3262 r.rpool.proxy_port[0] =
3263 PF_NAT_PROXY_PORT_LOW;
3264 r.rpool.proxy_port[1] =
3265 PF_NAT_PROXY_PORT_HIGH;
3266 } else if (!r.rpool.proxy_port[1])
3267 r.rpool.proxy_port[1] =
3268 r.rpool.proxy_port[0];
3269 break;
3270 default:
3271 break;
3272 }
3273
3274 r.rpool.opts = $8.type;
3275 if ((r.rpool.opts & PF_POOL_TYPEMASK) ==
3276 PF_POOL_NONE && ($7->host->next != NULL ||
3277 $7->host->addr.type == PF_ADDR_TABLE ||
3278 DYNIF_MULTIADDR($7->host->addr)))
3279 r.rpool.opts = PF_POOL_ROUNDROBIN;
3280 if ((r.rpool.opts & PF_POOL_TYPEMASK) !=
3281 PF_POOL_ROUNDROBIN &&
3282 disallow_table($7->host, "tables are only "
3283 "supported in round-robin redirection "
3284 "pools"))
3285 YYERROR;
3286 if ((r.rpool.opts & PF_POOL_TYPEMASK) !=
3287 PF_POOL_ROUNDROBIN &&
3288 disallow_alias($7->host, "interface (%s) "
3289 "is only supported in round-robin "
3290 "redirection pools"))
3291 YYERROR;
3292 if ($7->host->next != NULL) {
3293 if ((r.rpool.opts & PF_POOL_TYPEMASK) !=
3294 PF_POOL_ROUNDROBIN) {
3295 yyerror("only round-robin "
3296 "valid for multiple "
3297 "redirection addresses");
3298 YYERROR;
3299 }
3300 }
3301 }
3302
3303 if ($8.key != NULL)
3304 memcpy(&r.rpool.key, $8.key,
3305 sizeof(struct pf_poolhashkey));
3306
3307 if ($8.opts)
3308 r.rpool.opts |= $8.opts;
3309
3310 if ($8.staticport) {
3311 if (r.action != PF_NAT) {
3312 yyerror("the 'static-port' option is "
3313 "only valid with nat rules");
3314 YYERROR;
3315 }
3316 if (r.rpool.proxy_port[0] !=
3317 PF_NAT_PROXY_PORT_LOW &&
3318 r.rpool.proxy_port[1] !=
3319 PF_NAT_PROXY_PORT_HIGH) {
3320 yyerror("the 'static-port' option can't"
3321 " be used when specifying a port"
3322 " range");
3323 YYERROR;
3324 }
3325 r.rpool.proxy_port[0] = 0;
3326 r.rpool.proxy_port[1] = 0;
3327 }
3328
3329 expand_rule(&r, $2, $7 == NULL ? NULL : $7->host, $4,
3330 $5.src_os, $5.src.host, $5.src.port, $5.dst.host,
3331 $5.dst.port, 0, 0, 0);
3332 free($7);
3333 }
3334 ;
3335
3336 binatrule : no BINAT natpass interface af proto FROM host TO ipspec tag
3337 redirection
3338 {
3339 struct pf_rule binat;
3340 struct pf_pooladdr *pa;
3341
3342 if (check_rulestate(PFCTL_STATE_NAT))
3343 YYERROR;
3344
3345 memset(&binat, 0, sizeof(binat));
3346
3347 if ($1)
3348 binat.action = PF_NOBINAT;
3349 else
3350 binat.action = PF_BINAT;
3351 binat.natpass = $3;
3352 binat.af = $5;
3353 if (!binat.af && $8 != NULL && $8->af)
3354 binat.af = $8->af;
3355 if (!binat.af && $10 != NULL && $10->af)
3356 binat.af = $10->af;
3357 if (!binat.af && $12 != NULL && $12->host)
3358 binat.af = $12->host->af;
3359 if (!binat.af) {
3360 yyerror("address family (inet/inet6) "
3361 "undefined");
3362 YYERROR;
3363 }
3364
3365 if ($4 != NULL) {
3366 memcpy(binat.ifname, $4->ifname,
3367 sizeof(binat.ifname));
3368 binat.ifnot = $4->not;
3369 free($4);
3370 }
3371 if ($11 != NULL)
3372 if (strlcpy(binat.tagname, $11,
3373 PF_TAG_NAME_SIZE) >= PF_TAG_NAME_SIZE) {
3374 yyerror("tag too long, max %u chars",
3375 PF_TAG_NAME_SIZE - 1);
3376 YYERROR;
3377 }
3378
3379 if ($6 != NULL) {
3380 binat.proto = $6->proto;
3381 free($6);
3382 }
3383
3384 if ($8 != NULL && disallow_table($8, "invalid use of "
3385 "table <%s> as the source address of a binat rule"))
3386 YYERROR;
3387 if ($8 != NULL && disallow_alias($8, "invalid use of "
3388 "interface (%s) as the source address of a binat "
3389 "rule"))
3390 YYERROR;
3391 if ($12 != NULL && $12->host != NULL && disallow_table(
3392 $12->host, "invalid use of table <%s> as the "
3393 "redirect address of a binat rule"))
3394 YYERROR;
3395 if ($12 != NULL && $12->host != NULL && disallow_alias(
3396 $12->host, "invalid use of interface (%s) as the "
3397 "redirect address of a binat rule"))
3398 YYERROR;
3399
3400 if ($8 != NULL) {
3401 if ($8->next) {
3402 yyerror("multiple binat ip addresses");
3403 YYERROR;
3404 }
3405 if ($8->addr.type == PF_ADDR_DYNIFTL)
3406 $8->af = binat.af;
3407 if ($8->af != binat.af) {
3408 yyerror("binat ip versions must match");
3409 YYERROR;
3410 }
3411 if (check_netmask($8, binat.af))
3412 YYERROR;
3413 memcpy(&binat.src.addr, &$8->addr,
3414 sizeof(binat.src.addr));
3415 free($8);
3416 }
3417 if ($10 != NULL) {
3418 if ($10->next) {
3419 yyerror("multiple binat ip addresses");
3420 YYERROR;
3421 }
3422 if ($10->af != binat.af && $10->af) {
3423 yyerror("binat ip versions must match");
3424 YYERROR;
3425 }
3426 if (check_netmask($10, binat.af))
3427 YYERROR;
3428 memcpy(&binat.dst.addr, &$10->addr,
3429 sizeof(binat.dst.addr));
3430 binat.dst.not = $10->not;
3431 free($10);
3432 }
3433
3434 if (binat.action == PF_NOBINAT) {
3435 if ($12 != NULL) {
3436 yyerror("'no binat' rule does not need"
3437 " '->'");
3438 YYERROR;
3439 }
3440 } else {
3441 if ($12 == NULL || $12->host == NULL) {
3442 yyerror("'binat' rule requires"
3443 " '-> address'");
3444 YYERROR;
3445 }
3446
3447 remove_invalid_hosts(&$12->host, &binat.af);
3448 if (invalid_redirect($12->host, binat.af))
3449 YYERROR;
3450 if ($12->host->next != NULL) {
3451 yyerror("binat rule must redirect to "
3452 "a single address");
3453 YYERROR;
3454 }
3455 if (check_netmask($12->host, binat.af))
3456 YYERROR;
3457
3458 if (!PF_AZERO(&binat.src.addr.v.a.mask,
3459 binat.af) &&
3460 !PF_AEQ(&binat.src.addr.v.a.mask,
3461 &$12->host->addr.v.a.mask, binat.af)) {
3462 yyerror("'binat' source mask and "
3463 "redirect mask must be the same");
3464 YYERROR;
3465 }
3466
3467 TAILQ_INIT(&binat.rpool.list);
3468 pa = calloc(1, sizeof(struct pf_pooladdr));
3469 if (pa == NULL)
3470 err(1, "binat: calloc");
3471 pa->addr = $12->host->addr;
3472 pa->ifname[0] = 0;
3473 TAILQ_INSERT_TAIL(&binat.rpool.list,
3474 pa, entries);
3475
3476 free($12);
3477 }
3478
3479 pfctl_add_rule(pf, &binat);
3480 }
3481 ;
3482
3483 tag : /* empty */ { $$ = NULL; }
3484 | TAG STRING { $$ = $2; }
3485 ;
3486
3487 route_host : STRING {
3488 $$ = calloc(1, sizeof(struct node_host));
3489 if ($$ == NULL)
3490 err(1, "route_host: calloc");
3491 $$->ifname = $1;
3492 if (ifa_exists($$->ifname, 0) == NULL) {
3493 yyerror("routeto: unknown interface %s",
3494 $$->ifname);
3495 free($1);
3496 free($$);
3497 YYERROR;
3498 }
3499 set_ipmask($$, 128);
3500 $$->next = NULL;
3501 $$->tail = $$;
3502 }
3503 | '(' STRING host ')' {
3504 $$ = $3;
3505 $$->ifname = $2;
3506 if (ifa_exists($$->ifname, 0) == NULL) {
3507 yyerror("routeto: unknown interface %s",
3508 $$->ifname);
3509 YYERROR;
3510 }
3511 }
3512 ;
3513
3514 route_host_list : route_host { $$ = $1; }
3515 | route_host_list comma route_host {
3516 if ($1->af == 0)
3517 $1->af = $3->af;
3518 if ($1->af != $3->af) {
3519 yyerror("all pool addresses must be in the "
3520 "same address family");
3521 YYERROR;
3522 }
3523 $1->tail->next = $3;
3524 $1->tail = $3->tail;
3525 $$ = $1;
3526 }
3527 ;
3528
3529 routespec : route_host { $$ = $1; }
3530 | '{' route_host_list '}' { $$ = $2; }
3531 ;
3532
3533 route : /* empty */ {
3534 $$.host = NULL;
3535 $$.rt = 0;
3536 $$.pool_opts = 0;
3537 }
3538 | FASTROUTE {
3539 $$.host = NULL;
3540 $$.rt = PF_FASTROUTE;
3541 $$.pool_opts = 0;
3542 }
3543 | ROUTETO routespec pool_opts {
3544 $$.host = $2;
3545 $$.rt = PF_ROUTETO;
3546 $$.pool_opts = $3.type | $3.opts;
3547 if ($3.key != NULL)
3548 $$.key = $3.key;
3549 }
3550 | REPLYTO routespec pool_opts {
3551 $$.host = $2;
3552 $$.rt = PF_REPLYTO;
3553 $$.pool_opts = $3.type | $3.opts;
3554 if ($3.key != NULL)
3555 $$.key = $3.key;
3556 }
3557 | DUPTO routespec pool_opts {
3558 $$.host = $2;
3559 $$.rt = PF_DUPTO;
3560 $$.pool_opts = $3.type | $3.opts;
3561 if ($3.key != NULL)
3562 $$.key = $3.key;
3563 }
3564 ;
3565
3566 timeout_spec : STRING number
3567 {
3568 if (check_rulestate(PFCTL_STATE_OPTION)) {
3569 free($1);
3570 YYERROR;
3571 }
3572 if (pfctl_set_timeout(pf, $1, $2, 0) != 0) {
3573 yyerror("unknown timeout %s", $1);
3574 free($1);
3575 YYERROR;
3576 }
3577 free($1);
3578 }
3579 ;
3580
3581 timeout_list : timeout_list comma timeout_spec
3582 | timeout_spec
3583 ;
3584
3585 limit_spec : STRING number
3586 {
3587 if (check_rulestate(PFCTL_STATE_OPTION)) {
3588 free($1);
3589 YYERROR;
3590 }
3591 if (pfctl_set_limit(pf, $1, $2) != 0) {
3592 yyerror("unable to set limit %s %u", $1, $2);
3593 free($1);
3594 YYERROR;
3595 }
3596 free($1);
3597 }
3598 ;
3599
3600 limit_list : limit_list comma limit_spec
3601 | limit_spec
3602 ;
3603
3604 comma : ','
3605 | /* empty */
3606 ;
3607
3608 yesno : NO { $$ = 0; }
3609 | STRING {
3610 if (!strcmp($1, "yes"))
3611 $$ = 1;
3612 else {
3613 free($1);
3614 YYERROR;
3615 }
3616 free($1);
3617 }
3618 ;
3619
3620 unaryop : '=' { $$ = PF_OP_EQ; }
3621 | '!' '=' { $$ = PF_OP_NE; }
3622 | '<' '=' { $$ = PF_OP_LE; }
3623 | '<' { $$ = PF_OP_LT; }
3624 | '>' '=' { $$ = PF_OP_GE; }
3625 | '>' { $$ = PF_OP_GT; }
3626 ;
3627
3628 %%
3629
3630 int
3631 yyerror(const char *fmt, ...)
3632 {
3633 va_list ap;
3634
3635 errors = 1;
3636 va_start(ap, fmt);
3637 fprintf(stderr, "%s:%d: ", infile, yylval.lineno);
3638 vfprintf(stderr, fmt, ap);
3639 fprintf(stderr, "\n");
3640 va_end(ap);
3641 return (0);
3642 }
3643
3644 int
3645 disallow_table(struct node_host *h, const char *fmt)
3646 {
3647 for (; h != NULL; h = h->next)
3648 if (h->addr.type == PF_ADDR_TABLE) {
3649 yyerror(fmt, h->addr.v.tblname);
3650 return (1);
3651 }
3652 return (0);
3653 }
3654
3655 int
3656 disallow_alias(struct node_host *h, const char *fmt)
3657 {
3658 for (; h != NULL; h = h->next)
3659 if (DYNIF_MULTIADDR(h->addr)) {
3660 yyerror(fmt, h->addr.v.tblname);
3661 return (1);
3662 }
3663 return (0);
3664 }
3665
3666 int
3667 rule_consistent(struct pf_rule *r)
3668 {
3669 int problems = 0;
3670
3671 switch (r->action) {
3672 case PF_PASS:
3673 case PF_DROP:
3674 case PF_SCRUB:
3675 problems = filter_consistent(r);
3676 break;
3677 case PF_NAT:
3678 case PF_NONAT:
3679 problems = nat_consistent(r);
3680 break;
3681 case PF_RDR:
3682 case PF_NORDR:
3683 problems = rdr_consistent(r);
3684 break;
3685 case PF_BINAT:
3686 case PF_NOBINAT:
3687 default:
3688 break;
3689 }
3690 return (problems);
3691 }
3692
3693 int
3694 filter_consistent(struct pf_rule *r)
3695 {
3696 int problems = 0;
3697
3698 if (r->proto != IPPROTO_TCP && r->proto != IPPROTO_UDP &&
3699 (r->src.port_op || r->dst.port_op)) {
3700 yyerror("port only applies to tcp/udp");
3701 problems++;
3702 }
3703 if (r->proto != IPPROTO_ICMP && r->proto != IPPROTO_ICMPV6 &&
3704 (r->type || r->code)) {
3705 yyerror("icmp-type/code only applies to icmp");
3706 problems++;
3707 }
3708 if (!r->af && (r->type || r->code)) {
3709 yyerror("must indicate address family with icmp-type/code");
3710 problems++;
3711 }
3712 if ((r->proto == IPPROTO_ICMP && r->af == AF_INET6) ||
3713 (r->proto == IPPROTO_ICMPV6 && r->af == AF_INET)) {
3714 yyerror("proto %s doesn't match address family %s",
3715 r->proto == IPPROTO_ICMP ? "icmp" : "icmp6",
3716 r->af == AF_INET ? "inet" : "inet6");
3717 problems++;
3718 }
3719 if (r->allow_opts && r->action != PF_PASS) {
3720 yyerror("allow-opts can only be specified for pass rules");
3721 problems++;
3722 }
3723 if (r->rule_flag & PFRULE_FRAGMENT && (r->src.port_op ||
3724 r->dst.port_op || r->flagset || r->type || r->code)) {
3725 yyerror("fragments can be filtered only on IP header fields");
3726 problems++;
3727 }
3728 if (r->rule_flag & PFRULE_RETURNRST && r->proto != IPPROTO_TCP) {
3729 yyerror("return-rst can only be applied to TCP rules");
3730 problems++;
3731 }
3732 if (r->max_src_nodes && !(r->rule_flag & PFRULE_RULESRCTRACK)) {
3733 yyerror("max-src-nodes requires 'source-track rule'");
3734 problems++;
3735 }
3736 if (r->action == PF_DROP && r->keep_state) {
3737 yyerror("keep state on block rules doesn't make sense");
3738 problems++;
3739 }
3740 if ((r->tagname[0] || r->match_tagname[0]) && !r->keep_state &&
3741 r->action == PF_PASS && !r->anchorname[0]) {
3742 yyerror("tags cannot be used without keep state");
3743 problems++;
3744 }
3745 return (-problems);
3746 }
3747
3748 int
3749 nat_consistent(struct pf_rule *r __unused)
3750 {
3751 return (0); /* yeah! */
3752 }
3753
3754 int
3755 rdr_consistent(struct pf_rule *r)
3756 {
3757 int problems = 0;
3758
3759 if (r->proto != IPPROTO_TCP && r->proto != IPPROTO_UDP) {
3760 if (r->src.port_op) {
3761 yyerror("src port only applies to tcp/udp");
3762 problems++;
3763 }
3764 if (r->dst.port_op) {
3765 yyerror("dst port only applies to tcp/udp");
3766 problems++;
3767 }
3768 if (r->rpool.proxy_port[0]) {
3769 yyerror("rpool port only applies to tcp/udp");
3770 problems++;
3771 }
3772 }
3773 if (r->dst.port_op &&
3774 r->dst.port_op != PF_OP_EQ && r->dst.port_op != PF_OP_RRG) {
3775 yyerror("invalid port operator for rdr destination port");
3776 problems++;
3777 }
3778 return (-problems);
3779 }
3780
3781 int
3782 process_tabledef(char *name, struct table_opts *opts)
3783 {
3784 struct pfr_buffer ab;
3785 struct node_tinit *ti;
3786
3787 bzero(&ab, sizeof(ab));
3788 ab.pfrb_type = PFRB_ADDRS;
3789 SIMPLEQ_FOREACH(ti, &opts->init_nodes, entries) {
3790 if (ti->file)
3791 if (pfr_buf_load(&ab, ti->file, 0, append_addr)) {
3792 if (errno)
3793 yyerror("cannot load \"%s\": %s",
3794 ti->file, strerror(errno));
3795 else
3796 yyerror("file \"%s\" contains bad data",
3797 ti->file);
3798 goto _error;
3799 }
3800 if (ti->host)
3801 if (append_addr_host(&ab, ti->host, 0, 0)) {
3802 yyerror("cannot create address buffer: %s",
3803 strerror(errno));
3804 goto _error;
3805 }
3806 }
3807 if (pf->opts & PF_OPT_VERBOSE)
3808 print_tabledef(name, opts->flags, opts->init_addr,
3809 &opts->init_nodes);
3810 if (!(pf->opts & PF_OPT_NOACTION) &&
3811 pfctl_define_table(name, opts->flags, opts->init_addr,
3812 pf->anchor, pf->ruleset, &ab, pf->tticket)) {
3813 yyerror("cannot define table %s: %s", name,
3814 pfr_strerror(errno));
3815 goto _error;
3816 }
3817 pf->tdirty = 1;
3818 pfr_buf_clear(&ab);
3819 return (0);
3820 _error:
3821 pfr_buf_clear(&ab);
3822 return (-1);
3823 }
3824
3825 struct keywords {
3826 const char *k_name;
3827 int k_val;
3828 };
3829
3830 /* macro gore, but you should've seen the prior indentation nightmare... */
3831
3832 #define FREE_LIST(T,r) \
3833 do { \
3834 T *p, *node = r; \
3835 while (node != NULL) { \
3836 p = node; \
3837 node = node->next; \
3838 free(p); \
3839 } \
3840 } while (0)
3841
3842 #define LOOP_THROUGH(T,n,r,C) \
3843 do { \
3844 T *n; \
3845 if (r == NULL) { \
3846 r = calloc(1, sizeof(T)); \
3847 if (r == NULL) \
3848 err(1, "LOOP: calloc"); \
3849 r->next = NULL; \
3850 } \
3851 n = r; \
3852 while (n != NULL) { \
3853 do { \
3854 C; \
3855 } while (0); \
3856 n = n->next; \
3857 } \
3858 } while (0)
3859
3860 void
3861 expand_label_str(char *label, size_t len, const char *srch, const char *repl)
3862 {
3863 char *tmp;
3864 char *p, *q;
3865
3866 if ((tmp = calloc(1, len)) == NULL)
3867 err(1, "expand_label_str: calloc");
3868 p = q = label;
3869 while ((q = strstr(p, srch)) != NULL) {
3870 *q = '\0';
3871 if ((strlcat(tmp, p, len) >= len) ||
3872 (strlcat(tmp, repl, len) >= len))
3873 errx(1, "expand_label: label too long");
3874 q += strlen(srch);
3875 p = q;
3876 }
3877 if (strlcat(tmp, p, len) >= len)
3878 errx(1, "expand_label: label too long");
3879 strlcpy(label, tmp, len); /* always fits */
3880 free(tmp);
3881 }
3882
3883 void
3884 expand_label_if(const char *name, char *label, size_t len, const char *ifname)
3885 {
3886 if (strstr(label, name) != NULL) {
3887 if (!*ifname)
3888 expand_label_str(label, len, name, "any");
3889 else
3890 expand_label_str(label, len, name, ifname);
3891 }
3892 }
3893
3894 void
3895 expand_label_addr(const char *name, char *label, size_t len, sa_family_t af,
3896 struct node_host *h)
3897 {
3898 char tmp[64], tmp_not[66];
3899
3900 if (strstr(label, name) != NULL) {
3901 switch (h->addr.type) {
3902 case PF_ADDR_DYNIFTL:
3903 snprintf(tmp, sizeof(tmp), "(%s)", h->addr.v.ifname);
3904 break;
3905 case PF_ADDR_TABLE:
3906 snprintf(tmp, sizeof(tmp), "<%s>", h->addr.v.tblname);
3907 break;
3908 case PF_ADDR_NOROUTE:
3909 snprintf(tmp, sizeof(tmp), "no-route");
3910 break;
3911 case PF_ADDR_ADDRMASK:
3912 if (!af || (PF_AZERO(&h->addr.v.a.addr, af) &&
3913 PF_AZERO(&h->addr.v.a.mask, af)))
3914 snprintf(tmp, sizeof(tmp), "any");
3915 else {
3916 char a[48];
3917 int bits;
3918
3919 if (inet_ntop(af, &h->addr.v.a.addr, a,
3920 sizeof(a)) == NULL)
3921 snprintf(tmp, sizeof(tmp), "?");
3922 else {
3923 bits = unmask(&h->addr.v.a.mask, af);
3924 if ((af == AF_INET && bits < 32) ||
3925 (af == AF_INET6 && bits < 128))
3926 snprintf(tmp, sizeof(tmp),
3927 "%s/%d", a, bits);
3928 else
3929 snprintf(tmp, sizeof(tmp),
3930 "%s", a);
3931 }
3932 }
3933 break;
3934 default:
3935 snprintf(tmp, sizeof(tmp), "?");
3936 break;
3937 }
3938
3939 if (h->not) {
3940 snprintf(tmp_not, sizeof(tmp_not), "! %s", tmp);
3941 expand_label_str(label, len, name, tmp_not);
3942 } else
3943 expand_label_str(label, len, name, tmp);
3944 }
3945 }
3946
3947 void
3948 expand_label_port(const char *name, char *label, size_t len,
3949 struct node_port *port)
3950 {
3951 char a1[6], a2[6], op[13] = "";
3952
3953 if (strstr(label, name) != NULL) {
3954 snprintf(a1, sizeof(a1), "%u", ntohs(port->port[0]));
3955 snprintf(a2, sizeof(a2), "%u", ntohs(port->port[1]));
3956 if (!port->op)
3957 ;
3958 else if (port->op == PF_OP_IRG)
3959 snprintf(op, sizeof(op), "%s><%s", a1, a2);
3960 else if (port->op == PF_OP_XRG)
3961 snprintf(op, sizeof(op), "%s<>%s", a1, a2);
3962 else if (port->op == PF_OP_EQ)
3963 snprintf(op, sizeof(op), "%s", a1);
3964 else if (port->op == PF_OP_NE)
3965 snprintf(op, sizeof(op), "!=%s", a1);
3966 else if (port->op == PF_OP_LT)
3967 snprintf(op, sizeof(op), "<%s", a1);
3968 else if (port->op == PF_OP_LE)
3969 snprintf(op, sizeof(op), "<=%s", a1);
3970 else if (port->op == PF_OP_GT)
3971 snprintf(op, sizeof(op), ">%s", a1);
3972 else if (port->op == PF_OP_GE)
3973 snprintf(op, sizeof(op), ">=%s", a1);
3974 expand_label_str(label, len, name, op);
3975 }
3976 }
3977
3978 void
3979 expand_label_proto(const char *name, char *label, size_t len, u_int8_t proto)
3980 {
3981 struct protoent *pe;
3982 char n[4];
3983
3984 if (strstr(label, name) != NULL) {
3985 pe = getprotobynumber(proto);
3986 if (pe != NULL)
3987 expand_label_str(label, len, name, pe->p_name);
3988 else {
3989 snprintf(n, sizeof(n), "%u", proto);
3990 expand_label_str(label, len, name, n);
3991 }
3992 }
3993 }
3994
3995 void
3996 expand_label_nr(const char *name, char *label, size_t len)
3997 {
3998 char n[11];
3999
4000 if (strstr(label, name) != NULL) {
4001 snprintf(n, sizeof(n), "%u", pf->rule_nr);
4002 expand_label_str(label, len, name, n);
4003 }
4004 }
4005
4006 void
4007 expand_label(char *label, size_t len, const char *ifname, sa_family_t af,
4008 struct node_host *src_host, struct node_port *src_port,
4009 struct node_host *dst_host, struct node_port *dst_port,
4010 u_int8_t proto)
4011 {
4012 expand_label_if("$if", label, len, ifname);
4013 expand_label_addr("$srcaddr", label, len, af, src_host);
4014 expand_label_addr("$dstaddr", label, len, af, dst_host);
4015 expand_label_port("$srcport", label, len, src_port);
4016 expand_label_port("$dstport", label, len, dst_port);
4017 expand_label_proto("$proto", label, len, proto);
4018 expand_label_nr("$nr", label, len);
4019 }
4020
4021 int
4022 expand_altq(struct pf_altq *a, struct node_if *interfaces,
4023 struct node_queue *nqueues, struct node_queue_bw bwspec,
4024 struct node_queue_opt *opts)
4025 {
4026 struct pf_altq pa, pb;
4027 char qname[PF_QNAME_SIZE];
4028 struct node_queue *n;
4029 struct node_queue_bw bw;
4030 int errs = 0;
4031
4032 if ((pf->loadopt & PFCTL_FLAG_ALTQ) == 0) {
4033 FREE_LIST(struct node_if, interfaces);
4034 FREE_LIST(struct node_queue, nqueues);
4035 return (0);
4036 }
4037
4038 LOOP_THROUGH(struct node_if, interface, interfaces,
4039 memcpy(&pa, a, sizeof(struct pf_altq));
4040 if (strlcpy(pa.ifname, interface->ifname,
4041 sizeof(pa.ifname)) >= sizeof(pa.ifname))
4042 errx(1, "expand_altq: strlcpy");
4043
4044 if (interface->not) {
4045 yyerror("altq on ! <interface> is not supported");
4046 errs++;
4047 } else {
4048 if (eval_pfaltq(pf, &pa, &bwspec, opts))
4049 errs++;
4050 else
4051 if (pfctl_add_altq(pf, &pa))
4052 errs++;
4053
4054 if (pf->opts & PF_OPT_VERBOSE) {
4055 print_altq(&pf->paltq->altq, 0,
4056 &bwspec, opts);
4057 if (nqueues && nqueues->tail) {
4058 printf("queue { ");
4059 LOOP_THROUGH(struct node_queue, queue,
4060 nqueues,
4061 printf("%s ",
4062 queue->queue);
4063 );
4064 printf("}");
4065 }
4066 printf("\n");
4067 }
4068
4069 if (pa.scheduler == ALTQT_CBQ ||
4070 pa.scheduler == ALTQT_HFSC) {
4071 /* now create a root queue */
4072 memset(&pb, 0, sizeof(struct pf_altq));
4073 if (strlcpy(qname, "root_", sizeof(qname)) >=
4074 sizeof(qname))
4075 errx(1, "expand_altq: strlcpy");
4076 if (strlcat(qname, interface->ifname,
4077 sizeof(qname)) >= sizeof(qname))
4078 errx(1, "expand_altq: strlcat");
4079 if (strlcpy(pb.qname, qname,
4080 sizeof(pb.qname)) >= sizeof(pb.qname))
4081 errx(1, "expand_altq: strlcpy");
4082 if (strlcpy(pb.ifname, interface->ifname,
4083 sizeof(pb.ifname)) >= sizeof(pb.ifname))
4084 errx(1, "expand_altq: strlcpy");
4085 pb.qlimit = pa.qlimit;
4086 pb.scheduler = pa.scheduler;
4087 bw.bw_absolute = pa.ifbandwidth;
4088 bw.bw_percent = 0;
4089 if (eval_pfqueue(pf, &pb, &bw, opts))
4090 errs++;
4091 else
4092 if (pfctl_add_altq(pf, &pb))
4093 errs++;
4094 }
4095
4096 LOOP_THROUGH(struct node_queue, queue, nqueues,
4097 n = calloc(1, sizeof(struct node_queue));
4098 if (n == NULL)
4099 err(1, "expand_altq: calloc");
4100 if (pa.scheduler == ALTQT_CBQ ||
4101 pa.scheduler == ALTQT_HFSC /*||
4102 pa.scheduler == ALTQT_FAIRQ*/)
4103 if (strlcpy(n->parent, qname,
4104 sizeof(n->parent)) >=
4105 sizeof(n->parent))
4106 errx(1, "expand_altq: strlcpy");
4107 if (strlcpy(n->queue, queue->queue,
4108 sizeof(n->queue)) >= sizeof(n->queue))
4109 errx(1, "expand_altq: strlcpy");
4110 if (strlcpy(n->ifname, interface->ifname,
4111 sizeof(n->ifname)) >= sizeof(n->ifname))
4112 errx(1, "expand_altq: strlcpy");
4113 n->scheduler = pa.scheduler;
4114 n->next = NULL;
4115 n->tail = n;
4116 if (queues == NULL)
4117 queues = n;
4118 else {
4119 queues->tail->next = n;
4120 queues->tail = n;
4121 }
4122 );
4123 }
4124 );
4125 FREE_LIST(struct node_if, interfaces);
4126 FREE_LIST(struct node_queue, nqueues);
4127
4128 return (errs);
4129 }
4130
4131 int
4132 expand_queue(struct pf_altq *a, struct node_if *interfaces,
4133 struct node_queue *nqueues, struct node_queue_bw bwspec,
4134 struct node_queue_opt *opts)
4135 {
4136 struct node_queue *n, *nq;
4137 struct pf_altq pa;
4138 u_int8_t found = 0;
4139 u_int8_t errs = 0;
4140
4141 if ((pf->loadopt & PFCTL_FLAG_ALTQ) == 0) {
4142 FREE_LIST(struct node_queue, nqueues);
4143 return (0);
4144 }
4145
4146 if (queues == NULL) {
4147 yyerror("queue %s has no parent", a->qname);
4148 FREE_LIST(struct node_queue, nqueues);
4149 return (1);
4150 }
4151
4152 LOOP_THROUGH(struct node_if, interface, interfaces,
4153 LOOP_THROUGH(struct node_queue, tqueue, queues,
4154 if (!strncmp(a->qname, tqueue->queue, PF_QNAME_SIZE) &&
4155 (interface->ifname[0] == 0 ||
4156 (!interface->not && !strncmp(interface->ifname,
4157 tqueue->ifname, IFNAMSIZ)) ||
4158 (interface->not && strncmp(interface->ifname,
4159 tqueue->ifname, IFNAMSIZ)))) {
4160 /* found ourself in queues */
4161 found++;
4162
4163 memcpy(&pa, a, sizeof(struct pf_altq));
4164
4165 if (pa.scheduler != ALTQT_NONE &&
4166 pa.scheduler != tqueue->scheduler) {
4167 yyerror("exactly one scheduler type "
4168 "per interface allowed");
4169 return (1);
4170 }
4171 pa.scheduler = tqueue->scheduler;
4172
4173 /* scheduler dependent error checking */
4174 switch (pa.scheduler) {
4175 case ALTQT_PRIQ:
4176 if (nqueues != NULL) {
4177 yyerror("priq queues cannot "
4178 "have child queues");
4179 return (1);
4180 }
4181 if (bwspec.bw_absolute > 0 ||
4182 bwspec.bw_percent < 100) {
4183 yyerror("priq doesn't take "
4184 "bandwidth");
4185 return (1);
4186 }
4187 break;
4188 default:
4189 break;
4190 }
4191
4192 if (strlcpy(pa.ifname, tqueue->ifname,
4193 sizeof(pa.ifname)) >= sizeof(pa.ifname))
4194 errx(1, "expand_queue: strlcpy");
4195 if (strlcpy(pa.parent, tqueue->parent,
4196 sizeof(pa.parent)) >= sizeof(pa.parent))
4197 errx(1, "expand_queue: strlcpy");
4198
4199 if (eval_pfqueue(pf, &pa, &bwspec, opts))
4200 errs++;
4201 else
4202 if (pfctl_add_altq(pf, &pa))
4203 errs++;
4204
4205 for (nq = nqueues; nq != NULL; nq = nq->next) {
4206 if (!strcmp(a->qname, nq->queue)) {
4207 yyerror("queue cannot have "
4208 "itself as child");
4209 errs++;
4210 continue;
4211 }
4212 n = calloc(1,
4213 sizeof(struct node_queue));
4214 if (n == NULL)
4215 err(1, "expand_queue: calloc");
4216 if (strlcpy(n->parent, a->qname,
4217 sizeof(n->parent)) >=
4218 sizeof(n->parent))
4219 errx(1, "expand_queue strlcpy");
4220 if (strlcpy(n->queue, nq->queue,
4221 sizeof(n->queue)) >=
4222 sizeof(n->queue))
4223 errx(1, "expand_queue strlcpy");
4224 if (strlcpy(n->ifname, tqueue->ifname,
4225 sizeof(n->ifname)) >=
4226 sizeof(n->ifname))
4227 errx(1, "expand_queue strlcpy");
4228 n->scheduler = tqueue->scheduler;
4229 n->next = NULL;
4230 n->tail = n;
4231 if (queues == NULL)
4232 queues = n;
4233 else {
4234 queues->tail->next = n;
4235 queues->tail = n;
4236 }
4237 }
4238 if ((pf->opts & PF_OPT_VERBOSE) && (
4239 (found == 1 && interface->ifname[0] == 0) ||
4240 (found > 0 && interface->ifname[0] != 0))) {
4241 print_queue(&pf->paltq->altq, 0,
4242 &bwspec, interface->ifname[0] != 0,
4243 opts);
4244 if (nqueues && nqueues->tail) {
4245 printf("{ ");
4246 LOOP_THROUGH(struct node_queue,
4247 queue, nqueues,
4248 printf("%s ",
4249 queue->queue);
4250 );
4251 printf("}");
4252 }
4253 printf("\n");
4254 }
4255 }
4256 );
4257 );
4258
4259 FREE_LIST(struct node_queue, nqueues);
4260 FREE_LIST(struct node_if, interfaces);
4261
4262 if (!found) {
4263 yyerror("queue %s has no parent", a->qname);
4264 errs++;
4265 }
4266
4267 if (errs)
4268 return (1);
4269 else
4270 return (0);
4271 }
4272
4273 void
4274 expand_rule(struct pf_rule *r,
4275 struct node_if *interfaces, struct node_host *rpool_hosts,
4276 struct node_proto *protos, struct node_os *src_oses,
4277 struct node_host *src_hosts, struct node_port *src_ports,
4278 struct node_host *dst_hosts, struct node_port *dst_ports,
4279 struct node_uid *uids, struct node_gid *gids, struct node_icmp *icmp_types)
4280 {
4281 sa_family_t af = r->af;
4282 int added = 0, error = 0;
4283 char ifname[IF_NAMESIZE];
4284 char label[PF_RULE_LABEL_SIZE];
4285 char tagname[PF_TAG_NAME_SIZE];
4286 char match_tagname[PF_TAG_NAME_SIZE];
4287 struct pf_pooladdr *pa;
4288 struct node_host *h;
4289 u_int8_t flags, flagset, keep_state;
4290
4291 if (strlcpy(label, r->label, sizeof(label)) >= sizeof(label))
4292 errx(1, "expand_rule: strlcpy");
4293 if (strlcpy(tagname, r->tagname, sizeof(tagname)) >= sizeof(tagname))
4294 errx(1, "expand_rule: strlcpy");
4295 if (strlcpy(match_tagname, r->match_tagname, sizeof(match_tagname)) >=
4296 sizeof(match_tagname))
4297 errx(1, "expand_rule: strlcpy");
4298 flags = r->flags;
4299 flagset = r->flagset;
4300 keep_state = r->keep_state;
4301
4302 LOOP_THROUGH(struct node_if, interface, interfaces,
4303 LOOP_THROUGH(struct node_proto, proto, protos,
4304 LOOP_THROUGH(struct node_icmp, icmp_type, icmp_types,
4305 LOOP_THROUGH(struct node_host, src_host, src_hosts,
4306 LOOP_THROUGH(struct node_port, src_port, src_ports,
4307 LOOP_THROUGH(struct node_os, src_os, src_oses,
4308 LOOP_THROUGH(struct node_host, dst_host, dst_hosts,
4309 LOOP_THROUGH(struct node_port, dst_port, dst_ports,
4310 LOOP_THROUGH(struct node_uid, uid, uids,
4311 LOOP_THROUGH(struct node_gid, gid, gids,
4312
4313 r->af = af;
4314 /* for link-local IPv6 address, interface must match up */
4315 if ((r->af && src_host->af && r->af != src_host->af) ||
4316 (r->af && dst_host->af && r->af != dst_host->af) ||
4317 (src_host->af && dst_host->af &&
4318 src_host->af != dst_host->af) ||
4319 (src_host->ifindex && dst_host->ifindex &&
4320 src_host->ifindex != dst_host->ifindex) ||
4321 (src_host->ifindex && *interface->ifname &&
4322 src_host->ifindex != if_nametoindex(interface->ifname)) ||
4323 (dst_host->ifindex && *interface->ifname &&
4324 dst_host->ifindex != if_nametoindex(interface->ifname)))
4325 continue;
4326 if (!r->af && src_host->af)
4327 r->af = src_host->af;
4328 else if (!r->af && dst_host->af)
4329 r->af = dst_host->af;
4330
4331 if (*interface->ifname)
4332 memcpy(r->ifname, interface->ifname, sizeof(r->ifname));
4333 else if (if_indextoname(src_host->ifindex, ifname))
4334 memcpy(r->ifname, ifname, sizeof(r->ifname));
4335 else if (if_indextoname(dst_host->ifindex, ifname))
4336 memcpy(r->ifname, ifname, sizeof(r->ifname));
4337 else
4338 memset(r->ifname, '\0', sizeof(r->ifname));
4339
4340 if (strlcpy(r->label, label, sizeof(r->label)) >=
4341 sizeof(r->label))
4342 errx(1, "expand_rule: strlcpy");
4343 if (strlcpy(r->tagname, tagname, sizeof(r->tagname)) >=
4344 sizeof(r->tagname))
4345 errx(1, "expand_rule: strlcpy");
4346 if (strlcpy(r->match_tagname, match_tagname,
4347 sizeof(r->match_tagname)) >= sizeof(r->match_tagname))
4348 errx(1, "expand_rule: strlcpy");
4349 expand_label(r->label, PF_RULE_LABEL_SIZE, r->ifname, r->af,
4350 src_host, src_port, dst_host, dst_port, proto->proto);
4351 expand_label(r->tagname, PF_TAG_NAME_SIZE, r->ifname, r->af,
4352 src_host, src_port, dst_host, dst_port, proto->proto);
4353 expand_label(r->match_tagname, PF_TAG_NAME_SIZE, r->ifname,
4354 r->af, src_host, src_port, dst_host, dst_port,
4355 proto->proto);
4356
4357 error += check_netmask(src_host, r->af);
4358 error += check_netmask(dst_host, r->af);
4359
4360 r->ifnot = interface->not;
4361 r->proto = proto->proto;
4362 r->src.addr = src_host->addr;
4363 r->src.not = src_host->not;
4364 r->src.port[0] = src_port->port[0];
4365 r->src.port[1] = src_port->port[1];
4366 r->src.port_op = src_port->op;
4367 r->dst.addr = dst_host->addr;
4368 r->dst.not = dst_host->not;
4369 r->dst.port[0] = dst_port->port[0];
4370 r->dst.port[1] = dst_port->port[1];
4371 r->dst.port_op = dst_port->op;
4372 r->uid.op = uid->op;
4373 r->uid.uid[0] = uid->uid[0];
4374 r->uid.uid[1] = uid->uid[1];
4375 r->gid.op = gid->op;
4376 r->gid.gid[0] = gid->gid[0];
4377 r->gid.gid[1] = gid->gid[1];
4378 r->type = icmp_type->type;
4379 r->code = icmp_type->code;
4380
4381 if ((keep_state == PF_STATE_MODULATE ||
4382 keep_state == PF_STATE_SYNPROXY) &&
4383 r->proto && r->proto != IPPROTO_TCP)
4384 r->keep_state = PF_STATE_NORMAL;
4385 else
4386 r->keep_state = keep_state;
4387
4388 if (r->proto && r->proto != IPPROTO_TCP) {
4389 r->flags = 0;
4390 r->flagset = 0;
4391 } else {
4392 r->flags = flags;
4393 r->flagset = flagset;
4394 }
4395 if (icmp_type->proto && r->proto != icmp_type->proto) {
4396 yyerror("icmp-type mismatch");
4397 error++;
4398 }
4399
4400 if (src_os && src_os->os) {
4401 r->os_fingerprint = pfctl_get_fingerprint(src_os->os);
4402 if ((pf->opts & PF_OPT_VERBOSE2) &&
4403 r->os_fingerprint == PF_OSFP_NOMATCH)
4404 fprintf(stderr,
4405 "warning: unknown '%s' OS fingerprint\n",
4406 src_os->os);
4407 } else {
4408 r->os_fingerprint = PF_OSFP_ANY;
4409 }
4410
4411 TAILQ_INIT(&r->rpool.list);
4412 for (h = rpool_hosts; h != NULL; h = h->next) {
4413 pa = calloc(1, sizeof(struct pf_pooladdr));
4414 if (pa == NULL)
4415 err(1, "expand_rule: calloc");
4416 pa->addr = h->addr;
4417 if (h->ifname != NULL) {
4418 if (strlcpy(pa->ifname, h->ifname,
4419 sizeof(pa->ifname)) >=
4420 sizeof(pa->ifname))
4421 errx(1, "expand_rule: strlcpy");
4422 } else
4423 pa->ifname[0] = 0;
4424 TAILQ_INSERT_TAIL(&r->rpool.list, pa, entries);
4425 }
4426
4427 if (rule_consistent(r) < 0 || error)
4428 yyerror("skipping rule due to errors");
4429 else {
4430 r->nr = pf->rule_nr++;
4431 pfctl_add_rule(pf, r);
4432 added++;
4433 }
4434
4435 ))))))))));
4436
4437 FREE_LIST(struct node_if, interfaces);
4438 FREE_LIST(struct node_proto, protos);
4439 FREE_LIST(struct node_host, src_hosts);
4440 FREE_LIST(struct node_port, src_ports);
4441 FREE_LIST(struct node_os, src_oses);
4442 FREE_LIST(struct node_host, dst_hosts);
4443 FREE_LIST(struct node_port, dst_ports);
4444 FREE_LIST(struct node_uid, uids);
4445 FREE_LIST(struct node_gid, gids);
4446 FREE_LIST(struct node_icmp, icmp_types);
4447 FREE_LIST(struct node_host, rpool_hosts);
4448
4449 if (!added)
4450 yyerror("rule expands to no valid combination");
4451 }
4452
4453 #undef FREE_LIST
4454 #undef LOOP_THROUGH
4455
4456 int
4457 check_rulestate(int desired_state)
4458 {
4459 if (require_order && (rulestate > desired_state)) {
4460 yyerror("Rules must be in order: options, normalization, "
4461 "queueing, translation, filtering");
4462 return (1);
4463 }
4464 rulestate = desired_state;
4465 return (0);
4466 }
4467
4468 int
4469 kw_cmp(const void *k, const void *e)
4470 {
4471 return (strcmp(k, ((const struct keywords *)e)->k_name));
4472 }
4473
4474 int
4475 lookup(char *s)
4476 {
4477 /* this has to be sorted always */
4478 static const struct keywords keywords[] = {
4479 { "all", ALL},
4480 { "allow-opts", ALLOWOPTS},
4481 { "altq", ALTQ},
4482 { "anchor", ANCHOR},
4483 { "antispoof", ANTISPOOF},
4484 { "any", ANY},
4485 { "bandwidth", BANDWIDTH},
4486 { "binat", BINAT},
4487 { "binat-anchor", BINATANCHOR},
4488 { "bitmask", BITMASK},
4489 { "block", BLOCK},
4490 { "block-policy", BLOCKPOLICY},
4491 { "buckets", BUCKETS},
4492 { "cbq", CBQ},
4493 { "code", CODE},
4494 { "crop", FRAGCROP},
4495 { "debug", DEBUG},
4496 { "drop", DROP},
4497 { "drop-ovl", FRAGDROP},
4498 { "dup-to", DUPTO},
4499 { "fairq", FAIRQ},
4500 { "fastroute", FASTROUTE},
4501 { "file", FILENAME},
4502 { "fingerprints", FINGERPRINTS},
4503 { "flags", FLAGS},
4504 { "floating", FLOATING},
4505 { "for", FOR},
4506 { "fragment", FRAGMENT},
4507 { "from", FROM},
4508 { "global", GLOBAL},
4509 { "group", GROUP},
4510 { "group-bound", GRBOUND},
4511 { "hash-only", HASHONLY},
4512 { "hfsc", HFSC},
4513 { "hogs", HOGS},
4514 { "hostid", HOSTID},
4515 { "icmp-type", ICMPTYPE},
4516 { "icmp6-type", ICMP6TYPE},
4517 { "if-bound", IFBOUND},
4518 { "in", IN},
4519 { "inet", INET},
4520 { "inet6", INET6},
4521 { "keep", KEEP},
4522 { "keep-policy", KEEPPOLICY},
4523 { "label", LABEL},
4524 { "limit", LIMIT},
4525 { "linkshare", LINKSHARE},
4526 { "load", LOAD},
4527 { "log", LOG},
4528 { "log-all", LOGALL},
4529 { "loginterface", LOGINTERFACE},
4530 { "max", MAXIMUM},
4531 { "max-mss", MAXMSS},
4532 { "max-src-nodes", MAXSRCNODES},
4533 { "max-src-states", MAXSRCSTATES},
4534 { "min-ttl", MINTTL},
4535 { "modulate", MODULATE},
4536 { "nat", NAT},
4537 { "nat-anchor", NATANCHOR},
4538 { "no", NO},
4539 { "no-df", NODF},
4540 { "no-pickups", NOPICKUPS},
4541 { "no-route", NOROUTE},
4542 { "no-sync", NOSYNC},
4543 { "on", ON},
4544 { "optimization", OPTIMIZATION},
4545 { "os", OS},
4546 { "out", OUT},
4547 { "pass", PASS},
4548 { "pickups", PICKUPS},
4549 { "port", PORT},
4550 { "priority", PRIORITY},
4551 { "priq", PRIQ},
4552 { "probability", PROBABILITY},
4553 { "proto", PROTO},
4554 { "qlimit", QLIMIT},
4555 { "queue", QUEUE},
4556 { "quick", QUICK},
4557 { "random", RANDOM},
4558 { "random-id", RANDOMID},
4559 { "rdr", RDR},
4560 { "rdr-anchor", RDRANCHOR},
4561 { "realtime", REALTIME},
4562 { "reassemble", REASSEMBLE},
4563 { "reply-to", REPLYTO},
4564 { "require-order", REQUIREORDER},
4565 { "return", RETURN},
4566 { "return-icmp", RETURNICMP},
4567 { "return-icmp6", RETURNICMP6},
4568 { "return-rst", RETURNRST},
4569 { "round-robin", ROUNDROBIN},
4570 { "route-to", ROUTETO},
4571 { "rule", RULE},
4572 { "scrub", SCRUB},
4573 { "set", SET},
4574 { "source-hash", SOURCEHASH},
4575 { "source-track", SOURCETRACK},
4576 { "state", STATE},
4577 { "state-policy", STATEPOLICY},
4578 { "static-port", STATICPORT},
4579 { "sticky-address", STICKYADDRESS},
4580 { "synproxy", SYNPROXY},
4581 { "table", TABLE},
4582 { "tag", TAG},
4583 { "tagged", TAGGED},
4584 { "tbrsize", TBRSIZE},
4585 { "timeout", TIMEOUT},
4586 { "to", TO},
4587 { "tos", TOS},
4588 { "ttl", TTL},
4589 { "upperlimit", UPPERLIMIT},
4590 { "user", USER},
4591 };
4592 const struct keywords *p;
4593
4594 p = bsearch(s, keywords, sizeof(keywords)/sizeof(keywords[0]),
4595 sizeof(keywords[0]), kw_cmp);
4596
4597 if (p) {
4598 if (debug > 1)
4599 fprintf(stderr, "%s: %d\n", s, p->k_val);
4600 return (p->k_val);
4601 } else {
4602 if (debug > 1)
4603 fprintf(stderr, "string: %s\n", s);
4604 return (STRING);
4605 }
4606 }
4607
4608 #define MAXPUSHBACK 128
4609
4610 char *parsebuf;
4611 int parseindex;
4612 char pushback_buffer[MAXPUSHBACK];
4613 int pushback_index = 0;
4614
4615 int
4616 lgetc(FILE *f)
4617 {
4618 int c, next;
4619
4620 if (parsebuf) {
4621 /* Read character from the parsebuffer instead of input. */
4622 if (parseindex >= 0) {
4623 c = parsebuf[parseindex++];
4624 if (c != '\0')
4625 return (c);
4626 parsebuf = NULL;
4627 } else
4628 parseindex++;
4629 }
4630
4631 if (pushback_index)
4632 return (pushback_buffer[--pushback_index]);
4633
4634 while ((c = getc(f)) == '\\') {
4635 next = getc(f);
4636 if (next != '\n') {
4637 if (isspace(next))
4638 yyerror("whitespace after \\");
4639 ungetc(next, f);
4640 break;
4641 }
4642 yylval.lineno = lineno;
4643 lineno++;
4644 }
4645 if (c == '\t' || c == ' ') {
4646 /* Compress blanks to a single space. */
4647 do {
4648 c = getc(f);
4649 } while (c == '\t' || c == ' ');
4650 ungetc(c, f);
4651 c = ' ';
4652 }
4653
4654 return (c);
4655 }
4656
4657 int
4658 lungetc(int c)
4659 {
4660 if (c == EOF)
4661 return (EOF);
4662 if (parsebuf) {
4663 parseindex--;
4664 if (parseindex >= 0)
4665 return (c);
4666 }
4667 if (pushback_index < MAXPUSHBACK-1)
4668 return (pushback_buffer[pushback_index++] = c);
4669 else
4670 return (EOF);
4671 }
4672
4673 int
4674 findeol(void)
4675 {
4676 int c;
4677
4678 parsebuf = NULL;
4679 pushback_index = 0;
4680
4681 /* skip to either EOF or the first real EOL */
4682 while (1) {
4683 c = lgetc(fin);
4684 if (c == '\n') {
4685 lineno++;
4686 break;
4687 }
4688 if (c == EOF)
4689 break;
4690 }
4691 return (ERROR);
4692 }
4693
4694 int
4695 yylex(void)
4696 {
4697 char buf[8096];
4698 char *p, *val;
4699 int endc, c, next;
4700 int token;
4701
4702 top:
4703 p = buf;
4704 while ((c = lgetc(fin)) == ' ')
4705 ; /* nothing */
4706
4707 yylval.lineno = lineno;
4708 if (c == '#')
4709 while ((c = lgetc(fin)) != '\n' && c != EOF)
4710 ; /* nothing */
4711 if (c == '$' && parsebuf == NULL) {
4712 while (1) {
4713 if ((c = lgetc(fin)) == EOF)
4714 return (0);
4715
4716 if (p + 1 >= buf + sizeof(buf) - 1) {
4717 yyerror("string too long");
4718 return (findeol());
4719 }
4720 if (isalnum(c) || c == '_') {
4721 *p++ = (char)c;
4722 continue;
4723 }
4724 *p = '\0';
4725 lungetc(c);
4726 break;
4727 }
4728 val = symget(buf);
4729 if (val == NULL) {
4730 yyerror("macro '%s' not defined", buf);
4731 return (findeol());
4732 }
4733 parsebuf = val;
4734 parseindex = 0;
4735 goto top;
4736 }
4737
4738 switch (c) {
4739 case '\'':
4740 case '"':
4741 endc = c;
4742 while (1) {
4743 if ((c = lgetc(fin)) == EOF)
4744 return (0);
4745 if (c == endc) {
4746 *p = '\0';
4747 break;
4748 }
4749 if (c == '\n') {
4750 lineno++;
4751 continue;
4752 }
4753 if (p + 1 >= buf + sizeof(buf) - 1) {
4754 yyerror("string too long");
4755 return (findeol());
4756 }
4757 *p++ = (char)c;
4758 }
4759 yylval.v.string = strdup(buf);
4760 if (yylval.v.string == NULL)
4761 err(1, "yylex: strdup");
4762 return (STRING);
4763 case '<':
4764 next = lgetc(fin);
4765 if (next == '>') {
4766 yylval.v.i = PF_OP_XRG;
4767 return (PORTBINARY);
4768 }
4769 lungetc(next);
4770 break;
4771 case '>':
4772 next = lgetc(fin);
4773 if (next == '<') {
4774 yylval.v.i = PF_OP_IRG;
4775 return (PORTBINARY);
4776 }
4777 lungetc(next);
4778 break;
4779 case '-':
4780 next = lgetc(fin);
4781 if (next == '>')
4782 return (ARROW);
4783 lungetc(next);
4784 break;
4785 }
4786
4787 #define allowed_in_string(x) \
4788 (isalnum(x) || (ispunct(x) && x != '(' && x != ')' && \
4789 x != '{' && x != '}' && x != '<' && x != '>' && \
4790 x != '!' && x != '=' && x != '/' && x != '#' && \
4791 x != ','))
4792
4793 if (isalnum(c) || c == ':' || c == '_') {
4794 do {
4795 *p++ = c;
4796 if ((unsigned)(p-buf) >= sizeof(buf)) {
4797 yyerror("string too long");
4798 return (findeol());
4799 }
4800 } while ((c = lgetc(fin)) != EOF && (allowed_in_string(c)));
4801 lungetc(c);
4802 *p = '\0';
4803 if ((token = lookup(buf)) == STRING)
4804 if ((yylval.v.string = strdup(buf)) == NULL)
4805 err(1, "yylex: strdup");
4806 return (token);
4807 }
4808 if (c == '\n') {
4809 yylval.lineno = lineno;
4810 lineno++;
4811 }
4812 if (c == EOF)
4813 return (0);
4814 return (c);
4815 }
4816
4817 int
4818 parse_rules(FILE *input, struct pfctl *xpf)
4819 {
4820 struct sym *sym, *next;
4821
4822 fin = input;
4823 pf = xpf;
4824 lineno = 1;
4825 errors = 0;
4826 rulestate = PFCTL_STATE_NONE;
4827 returnicmpdefault = (ICMP_UNREACH << 8) | ICMP_UNREACH_PORT;
4828 returnicmp6default =
4829 (ICMP6_DST_UNREACH << 8) | ICMP6_DST_UNREACH_NOPORT;
4830 blockpolicy = PFRULE_DROP;
4831 require_order = 1;
4832
4833 yyparse();
4834
4835 /* Free macros and check which have not been used. */
4836 for (sym = TAILQ_FIRST(&symhead); sym != NULL; sym = next) {
4837 next = TAILQ_NEXT(sym, entries);
4838 if ((pf->opts & PF_OPT_VERBOSE2) && !sym->used)
4839 fprintf(stderr, "warning: macro '%s' not "
4840 "used\n", sym->nam);
4841 free(sym->nam);
4842 free(sym->val);
4843 TAILQ_REMOVE(&symhead, sym, entries);
4844 free(sym);
4845 }
4846
4847 return (errors ? -1 : 0);
4848 }
4849
4850 /*
4851 * Over-designed efficiency is a French and German concept, so how about
4852 * we wait until they discover this ugliness and make it all fancy.
4853 */
4854 int
4855 symset(const char *nam, const char *val, int persist)
4856 {
4857 struct sym *sym;
4858
4859 for (sym = TAILQ_FIRST(&symhead); sym && strcmp(nam, sym->nam);
4860 sym = TAILQ_NEXT(sym, entries))
4861 ; /* nothing */
4862
4863 if (sym != NULL) {
4864 if (sym->persist == 1)
4865 return (0);
4866 else {
4867 free(sym->nam);
4868 free(sym->val);
4869 TAILQ_REMOVE(&symhead, sym, entries);
4870 free(sym);
4871 }
4872 }
4873 if ((sym = calloc(1, sizeof(*sym))) == NULL)
4874 return (-1);
4875
4876 sym->nam = strdup(nam);
4877 if (sym->nam == NULL) {
4878 free(sym);
4879 return (-1);
4880 }
4881 sym->val = strdup(val);
4882 if (sym->val == NULL) {
4883 free(sym->nam);
4884 free(sym);
4885 return (-1);
4886 }
4887 sym->used = 0;
4888 sym->persist = persist;
4889 TAILQ_INSERT_TAIL(&symhead, sym, entries);
4890 return (0);
4891 }
4892
4893 int
4894 pfctl_cmdline_symset(char *s)
4895 {
4896 char *sym, *val;
4897 int ret;
4898
4899 if ((val = strrchr(s, '=')) == NULL)
4900 return (-1);
4901
4902 if ((sym = malloc(strlen(s) - strlen(val) + 1)) == NULL)
4903 err(1, "pfctl_cmdline_symset: malloc");
4904
4905 strlcpy(sym, s, strlen(s) - strlen(val) + 1);
4906
4907 ret = symset(sym, val + 1, 1);
4908 free(sym);
4909
4910 return (ret);
4911 }
4912
4913 char *
4914 symget(const char *nam)
4915 {
4916 struct sym *sym;
4917
4918 TAILQ_FOREACH(sym, &symhead, entries)
4919 if (strcmp(nam, sym->nam) == 0) {
4920 sym->used = 1;
4921 return (sym->val);
4922 }
4923 return (NULL);
4924 }
4925
4926 void
4927 decide_address_family(struct node_host *n, sa_family_t *af)
4928 {
4929 sa_family_t target_af = 0;
4930
4931 while (!*af && n != NULL) {
4932 if (n->af) {
4933 if (target_af == 0)
4934 target_af = n->af;
4935 if (target_af != n->af)
4936 return;
4937 }
4938 n = n->next;
4939 }
4940 if (!*af && target_af)
4941 *af = target_af;
4942 }
4943
4944 void
4945 remove_invalid_hosts(struct node_host **nh, sa_family_t *af)
4946 {
4947 struct node_host *n = *nh, *prev = NULL;
4948
4949 while (n != NULL) {
4950 if (*af && n->af && n->af != *af) {
4951 /* unlink and free n */
4952 struct node_host *next = n->next;
4953
4954 /* adjust tail pointer */
4955 if (n == (*nh)->tail)
4956 (*nh)->tail = prev;
4957 /* adjust previous node's next pointer */
4958 if (prev == NULL)
4959 *nh = next;
4960 else
4961 prev->next = next;
4962 /* free node */
4963 if (n->ifname != NULL)
4964 free(n->ifname);
4965 free(n);
4966 n = next;
4967 } else {
4968 if (n->af && !*af)
4969 *af = n->af;
4970 prev = n;
4971 n = n->next;
4972 }
4973 }
4974 }
4975
4976 int
4977 invalid_redirect(struct node_host *nh, sa_family_t af)
4978 {
4979 if (!af) {
4980 struct node_host *n;
4981
4982 /* tables and dyniftl are ok without an address family */
4983 for (n = nh; n != NULL; n = n->next) {
4984 if (n->addr.type != PF_ADDR_TABLE &&
4985 n->addr.type != PF_ADDR_DYNIFTL) {
4986 yyerror("address family not given and "
4987 "translation address expands to multiple "
4988 "address families");
4989 return (1);
4990 }
4991 }
4992 }
4993 if (nh == NULL) {
4994 yyerror("no translation address with matching address family "
4995 "found.");
4996 return (1);
4997 }
4998 return (0);
4999 }
5000
5001 int
5002 atoul(char *s, u_long *ulvalp)
5003 {
5004 u_long ulval;
5005 char *ep;
5006
5007 errno = 0;
5008 ulval = strtoul(s, &ep, 0);
5009 if (s[0] == '\0' || *ep != '\0')
5010 return (-1);
5011 if (errno == ERANGE && ulval == ULONG_MAX)
5012 return (-1);
5013 *ulvalp = ulval;
5014 return (0);
5015 }
5016
5017 int
5018 getservice(char *n)
5019 {
5020 struct servent *s;
5021 u_long ulval;
5022
5023 if (atoul(n, &ulval) == 0) {
5024 if (ulval > 65535) {
5025 yyerror("illegal port value %d", ulval);
5026 return (-1);
5027 }
5028 return (htons(ulval));
5029 } else {
5030 s = getservbyname(n, "tcp");
5031 if (s == NULL)
5032 s = getservbyname(n, "udp");
5033 if (s == NULL) {
5034 yyerror("unknown port %s", n);
5035 return (-1);
5036 }
5037 return (s->s_port);
5038 }
5039 }
5040
5041 int
5042 rule_label(struct pf_rule *r, char *s)
5043 {
5044 if (s) {
5045 if (strlcpy(r->label, s, sizeof(r->label)) >=
5046 sizeof(r->label)) {
5047 yyerror("rule label too long (max %d chars)",
5048 sizeof(r->label)-1);
5049 return (-1);
5050 }
5051 }
5052 return (0);
5053 }
5054
5055 u_int16_t
5056 parseicmpspec(char *w, sa_family_t af)
5057 {
5058 const struct icmpcodeent *p;
5059 u_long ulval;
5060 u_int8_t icmptype;
5061
5062 if (af == AF_INET)
5063 icmptype = returnicmpdefault >> 8;
5064 else
5065 icmptype = returnicmp6default >> 8;
5066
5067 if (atoul(w, &ulval) == -1) {
5068 if ((p = geticmpcodebyname(icmptype, w, af)) == NULL) {
5069 yyerror("unknown icmp code %s", w);
5070 return (0);
5071 }
5072 ulval = p->code;
5073 }
5074 if (ulval > 255) {
5075 yyerror("invalid icmp code %ld", ulval);
5076 return (0);
5077 }
5078 return (icmptype << 8 | ulval);
5079 }
5080
5081 int
5082 pfctl_load_anchors(int dev, int opts, struct pfr_buffer *trans)
5083 {
5084 struct loadanchors *la;
5085
5086 TAILQ_FOREACH(la, &loadanchorshead, entries) {
5087 if (opts & PF_OPT_VERBOSE)
5088 fprintf(stderr, "\nLoading anchor %s:%s from %s\n",
5089 la->anchorname, la->rulesetname, la->filename);
5090 if (pfctl_rules(dev, la->filename, opts, la->anchorname,
5091 la->rulesetname, trans) == -1)
5092 return (-1);
5093 }
5094
5095 return (0);
5096 }
5097
MP support for (parts of) the network stack