1 /* $OpenBSD: parse.y,v 1.554 2008/10/17 12:59:53 henning Exp $ */
4 * SPDX-License-Identifier: BSD-2-Clause
6 * Copyright (c) 2001 Markus Friedl. All rights reserved.
7 * Copyright (c) 2001 Daniel Hartmeier. All rights reserved.
8 * Copyright (c) 2001 Theo de Raadt. All rights reserved.
9 * Copyright (c) 2002,2003 Henning Brauer. All rights reserved.
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
14 * 1. Redistributions of source code must retain the above copyright
15 * notice, this list of conditions and the following disclaimer.
16 * 2. Redistributions in binary form must reproduce the above copyright
17 * notice, this list of conditions and the following disclaimer in the
18 * documentation and/or other materials provided with the distribution.
20 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
21 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
22 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
23 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
24 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
25 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
26 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
27 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
28 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
29 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
32 #include <sys/cdefs.h>
33 __FBSDID("$FreeBSD$");
35 #define PFIOC_USE_LATEST
37 #include <sys/types.h>
38 #include <sys/socket.h>
41 #include <sys/sysctl.h>
44 #include <netinet/in.h>
45 #include <netinet/in_systm.h>
46 #include <netinet/ip.h>
47 #include <netinet/ip_icmp.h>
48 #include <netinet/icmp6.h>
49 #include <net/pfvar.h>
50 #include <arpa/inet.h>
51 #include <net/altq/altq.h>
52 #include <net/altq/altq_cbq.h>
53 #include <net/altq/altq_codel.h>
54 #include <net/altq/altq_priq.h>
55 #include <net/altq/altq_hfsc.h>
56 #include <net/altq/altq_fairq.h>
73 #include "pfctl_parser.h"
76 static struct pfctl *pf = NULL;
78 static int rulestate = 0;
79 static u_int16_t returnicmpdefault =
80 (ICMP_UNREACH << 8) | ICMP_UNREACH_PORT;
81 static u_int16_t returnicmp6default =
82 (ICMP6_DST_UNREACH << 8) | ICMP6_DST_UNREACH_NOPORT;
83 static int blockpolicy = PFRULE_DROP;
84 static int failpolicy = PFRULE_DROP;
85 static int require_order = 1;
86 static int default_statelock;
88 static TAILQ_HEAD(files, file) files = TAILQ_HEAD_INITIALIZER(files);
90 TAILQ_ENTRY(file) entry;
96 struct file *pushfile(const char *, int);
98 int check_file_secrecy(int, const char *);
101 int yyerror(const char *, ...);
102 int kw_cmp(const void *, const void *);
108 static TAILQ_HEAD(symhead, sym) symhead = TAILQ_HEAD_INITIALIZER(symhead);
110 TAILQ_ENTRY(sym) entry;
116 int symset(const char *, const char *, int);
117 char *symget(const char *);
119 int atoul(char *, u_long *);
132 struct node_proto *next;
133 struct node_proto *tail;
139 struct node_port *next;
140 struct node_port *tail;
146 struct node_uid *next;
147 struct node_uid *tail;
153 struct node_gid *next;
154 struct node_gid *tail;
161 struct node_icmp *next;
162 struct node_icmp *tail;
165 enum { PF_STATE_OPT_MAX, PF_STATE_OPT_NOSYNC, PF_STATE_OPT_SRCTRACK,
166 PF_STATE_OPT_MAX_SRC_STATES, PF_STATE_OPT_MAX_SRC_CONN,
167 PF_STATE_OPT_MAX_SRC_CONN_RATE, PF_STATE_OPT_MAX_SRC_NODES,
168 PF_STATE_OPT_OVERLOAD, PF_STATE_OPT_STATELOCK,
169 PF_STATE_OPT_TIMEOUT, PF_STATE_OPT_SLOPPY, };
171 enum { PF_SRCTRACK_NONE, PF_SRCTRACK, PF_SRCTRACK_GLOBAL, PF_SRCTRACK_RULE };
173 struct node_state_opt {
176 u_int32_t max_states;
177 u_int32_t max_src_states;
178 u_int32_t max_src_conn;
185 char tblname[PF_TABLE_NAME_SIZE];
187 u_int32_t max_src_nodes;
195 struct node_state_opt *next;
196 struct node_state_opt *tail;
200 struct node_host *host;
201 struct node_port *port;
204 static struct node_queue {
205 char queue[PF_QNAME_SIZE];
206 char parent[PF_QNAME_SIZE];
207 char ifname[IFNAMSIZ];
209 struct node_queue *next;
210 struct node_queue *tail;
213 struct node_qassign {
218 static struct filter_opts {
220 #define FOM_FLAGS 0x01
221 #define FOM_ICMP 0x02
223 #define FOM_KEEP 0x08
224 #define FOM_SRCTRACK 0x10
225 #define FOM_SETPRIO 0x0400
226 #define FOM_PRIO 0x2000
227 struct node_uid *uid;
228 struct node_gid *gid;
235 struct node_icmp *icmpspec;
240 struct node_state_opt *options;
245 struct node_qassign queues;
248 u_int8_t match_tag_not;
251 u_int8_t set_prio[2];
253 struct node_host *addr;
258 static struct antispoof_opts {
263 static struct scrub_opts {
265 #define SOM_MINTTL 0x01
266 #define SOM_MAXMSS 0x02
267 #define SOM_FRAGCACHE 0x04
268 #define SOM_SETTOS 0x08
277 u_int8_t match_tag_not;
281 static struct queue_opts {
283 #define QOM_BWSPEC 0x01
284 #define QOM_SCHEDULER 0x02
285 #define QOM_PRIORITY 0x04
286 #define QOM_TBRSIZE 0x08
287 #define QOM_QLIMIT 0x10
288 struct node_queue_bw queue_bwspec;
289 struct node_queue_opt scheduler;
291 unsigned int tbrsize;
295 static struct table_opts {
298 struct node_tinithead init_nodes;
301 static struct pool_opts {
303 #define POM_TYPE 0x01
304 #define POM_STICKYADDRESS 0x02
308 struct pf_poolhashkey *key;
312 static struct codel_opts codel_opts;
313 static struct node_hfsc_opts hfsc_opts;
314 static struct node_fairq_opts fairq_opts;
315 static struct node_state_opt *keep_state_defaults = NULL;
317 int disallow_table(struct node_host *, const char *);
318 int disallow_urpf_failed(struct node_host *, const char *);
319 int disallow_alias(struct node_host *, const char *);
320 int rule_consistent(struct pf_rule *, int);
321 int filter_consistent(struct pf_rule *, int);
322 int nat_consistent(struct pf_rule *);
323 int rdr_consistent(struct pf_rule *);
324 int process_tabledef(char *, struct table_opts *);
325 void expand_label_str(char *, size_t, const char *, const char *);
326 void expand_label_if(const char *, char *, size_t, const char *);
327 void expand_label_addr(const char *, char *, size_t, u_int8_t,
329 void expand_label_port(const char *, char *, size_t,
331 void expand_label_proto(const char *, char *, size_t, u_int8_t);
332 void expand_label_nr(const char *, char *, size_t);
333 void expand_label(char *, size_t, const char *, u_int8_t,
334 struct node_host *, struct node_port *, struct node_host *,
335 struct node_port *, u_int8_t);
336 void expand_rule(struct pf_rule *, struct node_if *,
337 struct node_host *, struct node_proto *, struct node_os *,
338 struct node_host *, struct node_port *, struct node_host *,
339 struct node_port *, struct node_uid *, struct node_gid *,
340 struct node_icmp *, const char *);
341 int expand_altq(struct pf_altq *, struct node_if *,
342 struct node_queue *, struct node_queue_bw bwspec,
343 struct node_queue_opt *);
344 int expand_queue(struct pf_altq *, struct node_if *,
345 struct node_queue *, struct node_queue_bw,
346 struct node_queue_opt *);
347 int expand_skip_interface(struct node_if *);
349 int check_rulestate(int);
350 int getservice(char *);
351 int rule_label(struct pf_rule *, char *);
352 int rt_tableid_max(void);
354 void mv_rules(struct pf_ruleset *, struct pf_ruleset *);
355 void decide_address_family(struct node_host *, sa_family_t *);
356 void remove_invalid_hosts(struct node_host **, sa_family_t *);
357 int invalid_redirect(struct node_host *, sa_family_t);
358 u_int16_t parseicmpspec(char *, sa_family_t);
359 int kw_casecmp(const void *, const void *);
360 int map_tos(char *string, int *);
362 static TAILQ_HEAD(loadanchorshead, loadanchors)
363 loadanchorshead = TAILQ_HEAD_INITIALIZER(loadanchorshead);
366 TAILQ_ENTRY(loadanchors) entries;
389 struct node_if *interface;
390 struct node_proto *proto;
391 struct node_icmp *icmp;
392 struct node_host *host;
394 struct node_port *port;
395 struct node_uid *uid;
396 struct node_gid *gid;
397 struct node_state_opt *state_opt;
400 struct peer src, dst;
401 struct node_os *src_os;
404 struct node_host *host;
408 struct pf_poolhashkey *key;
411 struct node_host *host;
416 struct node_state_opt *options;
427 struct pf_poolhashkey *hashkey;
428 struct node_queue *queue;
429 struct node_queue_opt queue_options;
430 struct node_queue_bw queue_bwspec;
431 struct node_qassign qassign;
432 struct filter_opts filter_opts;
433 struct antispoof_opts antispoof_opts;
434 struct queue_opts queue_opts;
435 struct scrub_opts scrub_opts;
436 struct table_opts table_opts;
437 struct pool_opts pool_opts;
438 struct node_hfsc_opts hfsc_opts;
439 struct node_fairq_opts fairq_opts;
440 struct codel_opts codel_opts;
445 #define PPORT_RANGE 1
447 int parseport(char *, struct range *r, int);
449 #define DYNIF_MULTIADDR(addr) ((addr).type == PF_ADDR_DYNIFTL && \
450 (!((addr).iflags & PFI_AFLAG_NOALIAS) || \
451 !isdigit((addr).v.ifname[strlen((addr).v.ifname)-1])))
455 %token PASS BLOCK SCRUB RETURN IN OS OUT LOG QUICK ON FROM TO FLAGS
456 %token RETURNRST RETURNICMP RETURNICMP6 PROTO INET INET6 ALL ANY ICMPTYPE
457 %token ICMP6TYPE CODE KEEP MODULATE STATE PORT RDR NAT BINAT ARROW NODF
458 %token MINTTL ERROR ALLOWOPTS FASTROUTE FILENAME ROUTETO DUPTO REPLYTO NO LABEL
459 %token NOROUTE URPFFAILED FRAGMENT USER GROUP MAXMSS MAXIMUM TTL TOS DROP TABLE
460 %token REASSEMBLE FRAGDROP FRAGCROP ANCHOR NATANCHOR RDRANCHOR BINATANCHOR
461 %token SET OPTIMIZATION TIMEOUT LIMIT LOGINTERFACE BLOCKPOLICY FAILPOLICY
462 %token RANDOMID REQUIREORDER SYNPROXY FINGERPRINTS NOSYNC DEBUG SKIP HOSTID
463 %token ANTISPOOF FOR INCLUDE
464 %token BITMASK RANDOM SOURCEHASH ROUNDROBIN STATICPORT PROBABILITY
465 %token ALTQ CBQ CODEL PRIQ HFSC FAIRQ BANDWIDTH TBRSIZE LINKSHARE REALTIME
466 %token UPPERLIMIT QUEUE PRIORITY QLIMIT HOGS BUCKETS RTABLE TARGET INTERVAL
467 %token LOAD RULESET_OPTIMIZATION PRIO
468 %token STICKYADDRESS MAXSRCSTATES MAXSRCNODES SOURCETRACK GLOBAL RULE
469 %token MAXSRCCONN MAXSRCCONNRATE OVERLOAD FLUSH SLOPPY
470 %token TAGGED TAG IFBOUND FLOATING STATEPOLICY STATEDEFAULTS ROUTE SETTOS
471 %token DIVERTTO DIVERTREPLY
472 %token <v.string> STRING
473 %token <v.number> NUMBER
474 %token <v.i> PORTBINARY
475 %type <v.interface> interface if_list if_item_not if_item
476 %type <v.number> number icmptype icmp6type uid gid
477 %type <v.number> tos not yesno
478 %type <v.probability> probability
479 %type <v.i> no dir af fragcache optimizer
480 %type <v.i> sourcetrack flush unaryop statelock
481 %type <v.b> action nataction natpasslog scrubaction
482 %type <v.b> flags flag blockspec prio
483 %type <v.range> portplain portstar portrange
484 %type <v.hashkey> hashkey
485 %type <v.proto> proto proto_list proto_item
486 %type <v.number> protoval
487 %type <v.icmp> icmpspec
488 %type <v.icmp> icmp_list icmp_item
489 %type <v.icmp> icmp6_list icmp6_item
490 %type <v.number> reticmpspec reticmp6spec
491 %type <v.fromto> fromto
492 %type <v.peer> ipportspec from to
493 %type <v.host> ipspec toipspec xhost host dynaddr host_list
494 %type <v.host> redir_host_list redirspec
495 %type <v.host> route_host route_host_list routespec
496 %type <v.os> os xos os_list
497 %type <v.port> portspec port_list port_item
498 %type <v.uid> uids uid_list uid_item
499 %type <v.gid> gids gid_list gid_item
500 %type <v.route> route
501 %type <v.redirection> redirection redirpool
502 %type <v.string> label stringall tag anchorname
503 %type <v.string> string varstring numberstring
504 %type <v.keep_state> keep
505 %type <v.state_opt> state_opt_spec state_opt_list state_opt_item
506 %type <v.logquick> logquick quick log logopts logopt
507 %type <v.interface> antispoof_ifspc antispoof_iflst antispoof_if
508 %type <v.qassign> qname
509 %type <v.queue> qassign qassign_list qassign_item
510 %type <v.queue_options> scheduler
511 %type <v.number> cbqflags_list cbqflags_item
512 %type <v.number> priqflags_list priqflags_item
513 %type <v.hfsc_opts> hfscopts_list hfscopts_item hfsc_opts
514 %type <v.fairq_opts> fairqopts_list fairqopts_item fairq_opts
515 %type <v.codel_opts> codelopts_list codelopts_item codel_opts
516 %type <v.queue_bwspec> bandwidth
517 %type <v.filter_opts> filter_opts filter_opt filter_opts_l
518 %type <v.filter_opts> filter_sets filter_set filter_sets_l
519 %type <v.antispoof_opts> antispoof_opts antispoof_opt antispoof_opts_l
520 %type <v.queue_opts> queue_opts queue_opt queue_opts_l
521 %type <v.scrub_opts> scrub_opts scrub_opt scrub_opts_l
522 %type <v.table_opts> table_opts table_opt table_opts_l
523 %type <v.pool_opts> pool_opts pool_opt pool_opts_l
524 %type <v.tagged> tagged
525 %type <v.rtableid> rtable
528 ruleset : /* empty */
529 | ruleset include '\n'
531 | ruleset option '\n'
532 | ruleset scrubrule '\n'
533 | ruleset natrule '\n'
534 | ruleset binatrule '\n'
535 | ruleset pfrule '\n'
536 | ruleset anchorrule '\n'
537 | ruleset loadrule '\n'
538 | ruleset altqif '\n'
539 | ruleset queuespec '\n'
540 | ruleset varset '\n'
541 | ruleset antispoof '\n'
542 | ruleset tabledef '\n'
543 | '{' fakeanchor '}' '\n';
544 | ruleset error '\n' { file->errors++; }
547 include : INCLUDE STRING {
550 if ((nfile = pushfile($2, 0)) == NULL) {
551 yyerror("failed to include file %s", $2);
563 * apply to previouslys specified rule: must be careful to note
564 * what that is: pf or nat or binat or rdr
566 fakeanchor : fakeanchor '\n'
567 | fakeanchor anchorrule '\n'
568 | fakeanchor binatrule '\n'
569 | fakeanchor natrule '\n'
570 | fakeanchor pfrule '\n'
571 | fakeanchor error '\n'
575 if (!strcmp($1, "none"))
577 else if (!strcmp($1, "basic"))
578 $$ = PF_OPTIMIZE_BASIC;
579 else if (!strcmp($1, "profile"))
580 $$ = PF_OPTIMIZE_BASIC | PF_OPTIMIZE_PROFILE;
582 yyerror("unknown ruleset-optimization %s", $1);
588 option : SET OPTIMIZATION STRING {
589 if (check_rulestate(PFCTL_STATE_OPTION)) {
593 if (pfctl_set_optimization(pf, $3) != 0) {
594 yyerror("unknown optimization %s", $3);
600 | SET RULESET_OPTIMIZATION optimizer {
601 if (!(pf->opts & PF_OPT_OPTIMIZE)) {
602 pf->opts |= PF_OPT_OPTIMIZE;
606 | SET TIMEOUT timeout_spec
607 | SET TIMEOUT '{' optnl timeout_list '}'
608 | SET LIMIT limit_spec
609 | SET LIMIT '{' optnl limit_list '}'
610 | SET LOGINTERFACE stringall {
611 if (check_rulestate(PFCTL_STATE_OPTION)) {
615 if (pfctl_set_logif(pf, $3) != 0) {
616 yyerror("error setting loginterface %s", $3);
622 | SET HOSTID number {
623 if ($3 == 0 || $3 > UINT_MAX) {
624 yyerror("hostid must be non-zero");
627 if (pfctl_set_hostid(pf, $3) != 0) {
628 yyerror("error setting hostid %08x", $3);
632 | SET BLOCKPOLICY DROP {
633 if (pf->opts & PF_OPT_VERBOSE)
634 printf("set block-policy drop\n");
635 if (check_rulestate(PFCTL_STATE_OPTION))
637 blockpolicy = PFRULE_DROP;
639 | SET BLOCKPOLICY RETURN {
640 if (pf->opts & PF_OPT_VERBOSE)
641 printf("set block-policy return\n");
642 if (check_rulestate(PFCTL_STATE_OPTION))
644 blockpolicy = PFRULE_RETURN;
646 | SET FAILPOLICY DROP {
647 if (pf->opts & PF_OPT_VERBOSE)
648 printf("set fail-policy drop\n");
649 if (check_rulestate(PFCTL_STATE_OPTION))
651 failpolicy = PFRULE_DROP;
653 | SET FAILPOLICY RETURN {
654 if (pf->opts & PF_OPT_VERBOSE)
655 printf("set fail-policy return\n");
656 if (check_rulestate(PFCTL_STATE_OPTION))
658 failpolicy = PFRULE_RETURN;
660 | SET REQUIREORDER yesno {
661 if (pf->opts & PF_OPT_VERBOSE)
662 printf("set require-order %s\n",
663 $3 == 1 ? "yes" : "no");
666 | SET FINGERPRINTS STRING {
667 if (pf->opts & PF_OPT_VERBOSE)
668 printf("set fingerprints \"%s\"\n", $3);
669 if (check_rulestate(PFCTL_STATE_OPTION)) {
673 if (!pf->anchor->name[0]) {
674 if (pfctl_file_fingerprints(pf->dev,
676 yyerror("error loading "
677 "fingerprints %s", $3);
684 | SET STATEPOLICY statelock {
685 if (pf->opts & PF_OPT_VERBOSE)
688 printf("set state-policy floating\n");
691 printf("set state-policy if-bound\n");
694 default_statelock = $3;
697 if (check_rulestate(PFCTL_STATE_OPTION)) {
701 if (pfctl_set_debug(pf, $3) != 0) {
702 yyerror("error setting debuglevel %s", $3);
708 | SET SKIP interface {
709 if (expand_skip_interface($3) != 0) {
710 yyerror("error setting skip interface(s)");
714 | SET STATEDEFAULTS state_opt_list {
715 if (keep_state_defaults != NULL) {
716 yyerror("cannot redefine state-defaults");
719 keep_state_defaults = $3;
723 stringall : STRING { $$ = $1; }
725 if (($$ = strdup("all")) == NULL) {
726 err(1, "stringall: strdup");
731 string : STRING string {
732 if (asprintf(&$$, "%s %s", $1, $2) == -1)
733 err(1, "string: asprintf");
740 varstring : numberstring varstring {
741 if (asprintf(&$$, "%s %s", $1, $2) == -1)
742 err(1, "string: asprintf");
749 numberstring : NUMBER {
751 if (asprintf(&s, "%lld", (long long)$1) == -1) {
752 yyerror("string: asprintf");
760 varset : STRING '=' varstring {
762 if (pf->opts & PF_OPT_VERBOSE)
763 printf("%s = \"%s\"\n", $1, $3);
765 if (isspace((unsigned char)*s)) {
766 yyerror("macro name cannot contain "
771 if (symset($1, $3, 0) == -1)
772 err(1, "cannot store variable %s", $1);
778 anchorname : STRING { $$ = $1; }
779 | /* empty */ { $$ = NULL; }
782 pfa_anchorlist : /* empty */
783 | pfa_anchorlist '\n'
784 | pfa_anchorlist pfrule '\n'
785 | pfa_anchorlist anchorrule '\n'
790 char ta[PF_ANCHOR_NAME_SIZE];
791 struct pf_ruleset *rs;
793 /* steping into a brace anchor */
798 /* create a holding ruleset in the root */
799 snprintf(ta, PF_ANCHOR_NAME_SIZE, "_%d", pf->bn);
800 rs = pf_find_or_create_ruleset(ta);
802 err(1, "pfa_anchor: pf_find_or_create_ruleset");
803 pf->astack[pf->asd] = rs->anchor;
804 pf->anchor = rs->anchor;
805 } '\n' pfa_anchorlist '}'
807 pf->alast = pf->anchor;
809 pf->anchor = pf->astack[pf->asd];
814 anchorrule : ANCHOR anchorname dir quick interface af proto fromto
815 filter_opts pfa_anchor
818 struct node_proto *proto;
820 if (check_rulestate(PFCTL_STATE_FILTER)) {
826 if ($2 && ($2[0] == '_' || strstr($2, "/_") != NULL)) {
828 yyerror("anchor names beginning with '_' "
829 "are reserved for internal use");
833 memset(&r, 0, sizeof(r));
834 if (pf->astack[pf->asd + 1]) {
835 /* move inline rules into relative location */
837 &pf->astack[pf->asd]->ruleset,
838 $2 ? $2 : pf->alast->name);
840 if (r.anchor == NULL)
841 err(1, "anchorrule: unable to "
844 if (pf->alast != r.anchor) {
845 if (r.anchor->match) {
846 yyerror("inline anchor '%s' "
851 mv_rules(&pf->alast->ruleset,
854 pf_remove_if_empty_ruleset(&pf->alast->ruleset);
855 pf->alast = r.anchor;
858 yyerror("anchors without explicit "
859 "rules must specify a name");
867 r.rtableid = $9.rtableid;
870 if (strlcpy(r.tagname, $9.tag,
871 PF_TAG_NAME_SIZE) >= PF_TAG_NAME_SIZE) {
872 yyerror("tag too long, max %u chars",
873 PF_TAG_NAME_SIZE - 1);
877 if (strlcpy(r.match_tagname, $9.match_tag,
878 PF_TAG_NAME_SIZE) >= PF_TAG_NAME_SIZE) {
879 yyerror("tag too long, max %u chars",
880 PF_TAG_NAME_SIZE - 1);
883 r.match_tag_not = $9.match_tag_not;
884 if (rule_label(&r, $9.label))
887 r.flags = $9.flags.b1;
888 r.flagset = $9.flags.b2;
889 if (($9.flags.b1 & $9.flags.b2) != $9.flags.b1) {
890 yyerror("flags always false");
893 if ($9.flags.b1 || $9.flags.b2 || $8.src_os) {
894 for (proto = $7; proto != NULL &&
895 proto->proto != IPPROTO_TCP;
898 if (proto == NULL && $7 != NULL) {
899 if ($9.flags.b1 || $9.flags.b2)
901 "flags only apply to tcp");
904 "OS fingerprinting only "
912 if ($9.keep.action) {
913 yyerror("cannot specify state handling "
919 if (strlcpy(r.match_tagname, $9.match_tag,
920 PF_TAG_NAME_SIZE) >= PF_TAG_NAME_SIZE) {
921 yyerror("tag too long, max %u chars",
922 PF_TAG_NAME_SIZE - 1);
925 r.match_tag_not = $9.match_tag_not;
926 if ($9.marker & FOM_PRIO) {
928 r.prio = PF_PRIO_ZERO;
932 if ($9.marker & FOM_SETPRIO) {
933 r.set_prio[0] = $9.set_prio[0];
934 r.set_prio[1] = $9.set_prio[1];
935 r.scrub_flags |= PFSTATE_SETPRIO;
938 decide_address_family($8.src.host, &r.af);
939 decide_address_family($8.dst.host, &r.af);
941 expand_rule(&r, $5, NULL, $7, $8.src_os,
942 $8.src.host, $8.src.port, $8.dst.host, $8.dst.port,
943 $9.uid, $9.gid, $9.icmpspec,
944 pf->astack[pf->asd + 1] ? pf->alast->name : $2);
946 pf->astack[pf->asd + 1] = NULL;
948 | NATANCHOR string interface af proto fromto rtable {
951 if (check_rulestate(PFCTL_STATE_NAT)) {
956 memset(&r, 0, sizeof(r));
961 decide_address_family($6.src.host, &r.af);
962 decide_address_family($6.dst.host, &r.af);
964 expand_rule(&r, $3, NULL, $5, $6.src_os,
965 $6.src.host, $6.src.port, $6.dst.host, $6.dst.port,
969 | RDRANCHOR string interface af proto fromto rtable {
972 if (check_rulestate(PFCTL_STATE_NAT)) {
977 memset(&r, 0, sizeof(r));
982 decide_address_family($6.src.host, &r.af);
983 decide_address_family($6.dst.host, &r.af);
985 if ($6.src.port != NULL) {
986 yyerror("source port parameter not supported"
990 if ($6.dst.port != NULL) {
991 if ($6.dst.port->next != NULL) {
992 yyerror("destination port list "
993 "expansion not supported in "
996 } else if ($6.dst.port->op != PF_OP_EQ) {
997 yyerror("destination port operators"
998 " not supported in rdr-anchor");
1001 r.dst.port[0] = $6.dst.port->port[0];
1002 r.dst.port[1] = $6.dst.port->port[1];
1003 r.dst.port_op = $6.dst.port->op;
1006 expand_rule(&r, $3, NULL, $5, $6.src_os,
1007 $6.src.host, $6.src.port, $6.dst.host, $6.dst.port,
1011 | BINATANCHOR string interface af proto fromto rtable {
1014 if (check_rulestate(PFCTL_STATE_NAT)) {
1019 memset(&r, 0, sizeof(r));
1020 r.action = PF_BINAT;
1024 if ($5->next != NULL) {
1025 yyerror("proto list expansion"
1026 " not supported in binat-anchor");
1029 r.proto = $5->proto;
1033 if ($6.src.host != NULL || $6.src.port != NULL ||
1034 $6.dst.host != NULL || $6.dst.port != NULL) {
1035 yyerror("fromto parameter not supported"
1036 " in binat-anchor");
1040 decide_address_family($6.src.host, &r.af);
1041 decide_address_family($6.dst.host, &r.af);
1043 pfctl_add_rule(pf, &r, $2);
1048 loadrule : LOAD ANCHOR string FROM string {
1049 struct loadanchors *loadanchor;
1051 if (strlen(pf->anchor->name) + 1 +
1052 strlen($3) >= MAXPATHLEN) {
1053 yyerror("anchorname %s too long, max %u\n",
1054 $3, MAXPATHLEN - 1);
1058 loadanchor = calloc(1, sizeof(struct loadanchors));
1059 if (loadanchor == NULL)
1060 err(1, "loadrule: calloc");
1061 if ((loadanchor->anchorname = malloc(MAXPATHLEN)) ==
1063 err(1, "loadrule: malloc");
1064 if (pf->anchor->name[0])
1065 snprintf(loadanchor->anchorname, MAXPATHLEN,
1066 "%s/%s", pf->anchor->name, $3);
1068 strlcpy(loadanchor->anchorname, $3, MAXPATHLEN);
1069 if ((loadanchor->filename = strdup($5)) == NULL)
1070 err(1, "loadrule: strdup");
1072 TAILQ_INSERT_TAIL(&loadanchorshead, loadanchor,
1079 scrubaction : no SCRUB {
1088 scrubrule : scrubaction dir logquick interface af proto fromto scrub_opts
1092 if (check_rulestate(PFCTL_STATE_SCRUB))
1095 memset(&r, 0, sizeof(r));
1103 yyerror("scrub rules do not support 'quick'");
1109 r.rule_flag |= PFRULE_NODF;
1111 r.rule_flag |= PFRULE_RANDOMID;
1112 if ($8.reassemble_tcp) {
1113 if (r.direction != PF_INOUT) {
1114 yyerror("reassemble tcp rules can not "
1115 "specify direction");
1118 r.rule_flag |= PFRULE_REASSEMBLE_TCP;
1121 r.min_ttl = $8.minttl;
1123 r.max_mss = $8.maxmss;
1124 if ($8.marker & SOM_SETTOS) {
1125 r.rule_flag |= PFRULE_SET_TOS;
1126 r.set_tos = $8.settos;
1129 r.rule_flag |= $8.fragcache;
1131 if (strlcpy(r.match_tagname, $8.match_tag,
1132 PF_TAG_NAME_SIZE) >= PF_TAG_NAME_SIZE) {
1133 yyerror("tag too long, max %u chars",
1134 PF_TAG_NAME_SIZE - 1);
1137 r.match_tag_not = $8.match_tag_not;
1138 r.rtableid = $8.rtableid;
1140 expand_rule(&r, $4, NULL, $6, $7.src_os,
1141 $7.src.host, $7.src.port, $7.dst.host, $7.dst.port,
1142 NULL, NULL, NULL, "");
1147 bzero(&scrub_opts, sizeof scrub_opts);
1148 scrub_opts.rtableid = -1;
1151 { $$ = scrub_opts; }
1153 bzero(&scrub_opts, sizeof scrub_opts);
1154 scrub_opts.rtableid = -1;
1159 scrub_opts_l : scrub_opts_l scrub_opt
1164 if (scrub_opts.nodf) {
1165 yyerror("no-df cannot be respecified");
1168 scrub_opts.nodf = 1;
1171 if (scrub_opts.marker & SOM_MINTTL) {
1172 yyerror("min-ttl cannot be respecified");
1175 if ($2 < 0 || $2 > 255) {
1176 yyerror("illegal min-ttl value %d", $2);
1179 scrub_opts.marker |= SOM_MINTTL;
1180 scrub_opts.minttl = $2;
1183 if (scrub_opts.marker & SOM_MAXMSS) {
1184 yyerror("max-mss cannot be respecified");
1187 if ($2 < 0 || $2 > 65535) {
1188 yyerror("illegal max-mss value %d", $2);
1191 scrub_opts.marker |= SOM_MAXMSS;
1192 scrub_opts.maxmss = $2;
1195 if (scrub_opts.marker & SOM_SETTOS) {
1196 yyerror("set-tos cannot be respecified");
1199 scrub_opts.marker |= SOM_SETTOS;
1200 scrub_opts.settos = $2;
1203 if (scrub_opts.marker & SOM_FRAGCACHE) {
1204 yyerror("fragcache cannot be respecified");
1207 scrub_opts.marker |= SOM_FRAGCACHE;
1208 scrub_opts.fragcache = $1;
1210 | REASSEMBLE STRING {
1211 if (strcasecmp($2, "tcp") != 0) {
1212 yyerror("scrub reassemble supports only tcp, "
1218 if (scrub_opts.reassemble_tcp) {
1219 yyerror("reassemble tcp cannot be respecified");
1222 scrub_opts.reassemble_tcp = 1;
1225 if (scrub_opts.randomid) {
1226 yyerror("random-id cannot be respecified");
1229 scrub_opts.randomid = 1;
1232 if ($2 < 0 || $2 > rt_tableid_max()) {
1233 yyerror("invalid rtable id");
1236 scrub_opts.rtableid = $2;
1238 | not TAGGED string {
1239 scrub_opts.match_tag = $3;
1240 scrub_opts.match_tag_not = $1;
1244 fragcache : FRAGMENT REASSEMBLE { $$ = 0; /* default */ }
1245 | FRAGMENT FRAGCROP { $$ = 0; }
1246 | FRAGMENT FRAGDROP { $$ = 0; }
1249 antispoof : ANTISPOOF logquick antispoof_ifspc af antispoof_opts {
1251 struct node_host *h = NULL, *hh;
1252 struct node_if *i, *j;
1254 if (check_rulestate(PFCTL_STATE_FILTER))
1257 for (i = $3; i; i = i->next) {
1258 bzero(&r, sizeof(r));
1261 r.direction = PF_IN;
1266 if (rule_label(&r, $5.label))
1268 r.rtableid = $5.rtableid;
1269 j = calloc(1, sizeof(struct node_if));
1271 err(1, "antispoof: calloc");
1272 if (strlcpy(j->ifname, i->ifname,
1273 sizeof(j->ifname)) >= sizeof(j->ifname)) {
1275 yyerror("interface name too long");
1280 h = calloc(1, sizeof(*h));
1282 err(1, "address: calloc");
1283 h->addr.type = PF_ADDR_DYNIFTL;
1285 if (strlcpy(h->addr.v.ifname, i->ifname,
1286 sizeof(h->addr.v.ifname)) >=
1287 sizeof(h->addr.v.ifname)) {
1290 "interface name too long");
1293 hh = malloc(sizeof(*hh));
1295 err(1, "address: malloc");
1296 bcopy(h, hh, sizeof(*hh));
1297 h->addr.iflags = PFI_AFLAG_NETWORK;
1299 h = ifa_lookup(j->ifname,
1305 expand_rule(&r, j, NULL, NULL, NULL, h,
1306 NULL, NULL, NULL, NULL, NULL,
1309 if ((i->ifa_flags & IFF_LOOPBACK) == 0) {
1310 bzero(&r, sizeof(r));
1313 r.direction = PF_IN;
1318 if (rule_label(&r, $5.label))
1320 r.rtableid = $5.rtableid;
1324 h = ifa_lookup(i->ifname, 0);
1326 expand_rule(&r, NULL, NULL,
1327 NULL, NULL, h, NULL, NULL,
1328 NULL, NULL, NULL, NULL, "");
1336 antispoof_ifspc : FOR antispoof_if { $$ = $2; }
1337 | FOR '{' optnl antispoof_iflst '}' { $$ = $4; }
1340 antispoof_iflst : antispoof_if optnl { $$ = $1; }
1341 | antispoof_iflst comma antispoof_if optnl {
1342 $1->tail->next = $3;
1348 antispoof_if : if_item { $$ = $1; }
1356 bzero(&antispoof_opts, sizeof antispoof_opts);
1357 antispoof_opts.rtableid = -1;
1360 { $$ = antispoof_opts; }
1362 bzero(&antispoof_opts, sizeof antispoof_opts);
1363 antispoof_opts.rtableid = -1;
1364 $$ = antispoof_opts;
1368 antispoof_opts_l : antispoof_opts_l antispoof_opt
1372 antispoof_opt : label {
1373 if (antispoof_opts.label) {
1374 yyerror("label cannot be redefined");
1377 antispoof_opts.label = $1;
1380 if ($2 < 0 || $2 > rt_tableid_max()) {
1381 yyerror("invalid rtable id");
1384 antispoof_opts.rtableid = $2;
1388 not : '!' { $$ = 1; }
1389 | /* empty */ { $$ = 0; }
1392 tabledef : TABLE '<' STRING '>' table_opts {
1393 struct node_host *h, *nh;
1394 struct node_tinit *ti, *nti;
1396 if (strlen($3) >= PF_TABLE_NAME_SIZE) {
1397 yyerror("table name too long, max %d chars",
1398 PF_TABLE_NAME_SIZE - 1);
1402 if (pf->loadopt & PFCTL_FLAG_TABLE)
1403 if (process_tabledef($3, &$5)) {
1408 for (ti = SIMPLEQ_FIRST(&$5.init_nodes);
1409 ti != SIMPLEQ_END(&$5.init_nodes); ti = nti) {
1412 for (h = ti->host; h != NULL; h = nh) {
1416 nti = SIMPLEQ_NEXT(ti, entries);
1423 bzero(&table_opts, sizeof table_opts);
1424 SIMPLEQ_INIT(&table_opts.init_nodes);
1427 { $$ = table_opts; }
1430 bzero(&table_opts, sizeof table_opts);
1431 SIMPLEQ_INIT(&table_opts.init_nodes);
1436 table_opts_l : table_opts_l table_opt
1440 table_opt : STRING {
1441 if (!strcmp($1, "const"))
1442 table_opts.flags |= PFR_TFLAG_CONST;
1443 else if (!strcmp($1, "persist"))
1444 table_opts.flags |= PFR_TFLAG_PERSIST;
1445 else if (!strcmp($1, "counters"))
1446 table_opts.flags |= PFR_TFLAG_COUNTERS;
1448 yyerror("invalid table option '%s'", $1);
1454 | '{' optnl '}' { table_opts.init_addr = 1; }
1455 | '{' optnl host_list '}' {
1456 struct node_host *n;
1457 struct node_tinit *ti;
1459 for (n = $3; n != NULL; n = n->next) {
1460 switch (n->addr.type) {
1461 case PF_ADDR_ADDRMASK:
1464 yyerror("address ranges are not "
1465 "permitted inside tables");
1467 case PF_ADDR_DYNIFTL:
1468 yyerror("dynamic addresses are not "
1469 "permitted inside tables");
1472 yyerror("tables cannot contain tables");
1474 case PF_ADDR_NOROUTE:
1475 yyerror("\"no-route\" is not permitted "
1478 case PF_ADDR_URPFFAILED:
1479 yyerror("\"urpf-failed\" is not "
1480 "permitted inside tables");
1483 yyerror("unknown address type %d",
1488 if (!(ti = calloc(1, sizeof(*ti))))
1489 err(1, "table_opt: calloc");
1491 SIMPLEQ_INSERT_TAIL(&table_opts.init_nodes, ti,
1493 table_opts.init_addr = 1;
1496 struct node_tinit *ti;
1498 if (!(ti = calloc(1, sizeof(*ti))))
1499 err(1, "table_opt: calloc");
1501 SIMPLEQ_INSERT_TAIL(&table_opts.init_nodes, ti,
1503 table_opts.init_addr = 1;
1507 altqif : ALTQ interface queue_opts QUEUE qassign {
1510 if (check_rulestate(PFCTL_STATE_QUEUE))
1513 memset(&a, 0, sizeof(a));
1514 if ($3.scheduler.qtype == ALTQT_NONE) {
1515 yyerror("no scheduler specified!");
1518 a.scheduler = $3.scheduler.qtype;
1519 a.qlimit = $3.qlimit;
1520 a.tbrsize = $3.tbrsize;
1521 if ($5 == NULL && $3.scheduler.qtype != ALTQT_CODEL) {
1522 yyerror("no child queues specified");
1525 if (expand_altq(&a, $2, $5, $3.queue_bwspec,
1531 queuespec : QUEUE STRING interface queue_opts qassign {
1534 if (check_rulestate(PFCTL_STATE_QUEUE)) {
1539 memset(&a, 0, sizeof(a));
1541 if (strlcpy(a.qname, $2, sizeof(a.qname)) >=
1543 yyerror("queue name too long (max "
1544 "%d chars)", PF_QNAME_SIZE-1);
1550 yyerror("cannot specify tbrsize for queue");
1553 if ($4.priority > 255) {
1554 yyerror("priority out of range: max 255");
1557 a.priority = $4.priority;
1558 a.qlimit = $4.qlimit;
1559 a.scheduler = $4.scheduler.qtype;
1560 if (expand_queue(&a, $3, $5, $4.queue_bwspec,
1562 yyerror("errors in queue definition");
1569 bzero(&queue_opts, sizeof queue_opts);
1570 queue_opts.priority = DEFAULT_PRIORITY;
1571 queue_opts.qlimit = DEFAULT_QLIMIT;
1572 queue_opts.scheduler.qtype = ALTQT_NONE;
1573 queue_opts.queue_bwspec.bw_percent = 100;
1576 { $$ = queue_opts; }
1578 bzero(&queue_opts, sizeof queue_opts);
1579 queue_opts.priority = DEFAULT_PRIORITY;
1580 queue_opts.qlimit = DEFAULT_QLIMIT;
1581 queue_opts.scheduler.qtype = ALTQT_NONE;
1582 queue_opts.queue_bwspec.bw_percent = 100;
1587 queue_opts_l : queue_opts_l queue_opt
1591 queue_opt : BANDWIDTH bandwidth {
1592 if (queue_opts.marker & QOM_BWSPEC) {
1593 yyerror("bandwidth cannot be respecified");
1596 queue_opts.marker |= QOM_BWSPEC;
1597 queue_opts.queue_bwspec = $2;
1600 if (queue_opts.marker & QOM_PRIORITY) {
1601 yyerror("priority cannot be respecified");
1604 if ($2 < 0 || $2 > 255) {
1605 yyerror("priority out of range: max 255");
1608 queue_opts.marker |= QOM_PRIORITY;
1609 queue_opts.priority = $2;
1612 if (queue_opts.marker & QOM_QLIMIT) {
1613 yyerror("qlimit cannot be respecified");
1616 if ($2 < 0 || $2 > 65535) {
1617 yyerror("qlimit out of range: max 65535");
1620 queue_opts.marker |= QOM_QLIMIT;
1621 queue_opts.qlimit = $2;
1624 if (queue_opts.marker & QOM_SCHEDULER) {
1625 yyerror("scheduler cannot be respecified");
1628 queue_opts.marker |= QOM_SCHEDULER;
1629 queue_opts.scheduler = $1;
1632 if (queue_opts.marker & QOM_TBRSIZE) {
1633 yyerror("tbrsize cannot be respecified");
1636 if ($2 < 0 || $2 > UINT_MAX) {
1637 yyerror("tbrsize too big: max %u", UINT_MAX);
1640 queue_opts.marker |= QOM_TBRSIZE;
1641 queue_opts.tbrsize = $2;
1645 bandwidth : STRING {
1651 bps = strtod($1, &cp);
1653 if (strlen(cp) > 1) {
1655 if (!strcmp(cu, "Bit") ||
1657 !strcmp(cu, "bit") ||
1662 if (!strcmp(cp, "b"))
1664 else if (!strcmp(cp, "K"))
1666 else if (!strcmp(cp, "M"))
1668 else if (!strcmp(cp, "G"))
1669 bps *= 1000 * 1000 * 1000;
1670 else if (!strcmp(cp, "%")) {
1671 if (bps < 0 || bps > 100) {
1672 yyerror("bandwidth spec "
1677 $$.bw_percent = bps;
1680 yyerror("unknown unit %s", cp);
1686 $$.bw_absolute = (u_int64_t)bps;
1689 if ($1 < 0 || $1 >= LLONG_MAX) {
1690 yyerror("bandwidth number too big");
1694 $$.bw_absolute = $1;
1699 $$.qtype = ALTQT_CBQ;
1700 $$.data.cbq_opts.flags = 0;
1702 | CBQ '(' cbqflags_list ')' {
1703 $$.qtype = ALTQT_CBQ;
1704 $$.data.cbq_opts.flags = $3;
1707 $$.qtype = ALTQT_PRIQ;
1708 $$.data.priq_opts.flags = 0;
1710 | PRIQ '(' priqflags_list ')' {
1711 $$.qtype = ALTQT_PRIQ;
1712 $$.data.priq_opts.flags = $3;
1715 $$.qtype = ALTQT_HFSC;
1716 bzero(&$$.data.hfsc_opts,
1717 sizeof(struct node_hfsc_opts));
1719 | HFSC '(' hfsc_opts ')' {
1720 $$.qtype = ALTQT_HFSC;
1721 $$.data.hfsc_opts = $3;
1724 $$.qtype = ALTQT_FAIRQ;
1725 bzero(&$$.data.fairq_opts,
1726 sizeof(struct node_fairq_opts));
1728 | FAIRQ '(' fairq_opts ')' {
1729 $$.qtype = ALTQT_FAIRQ;
1730 $$.data.fairq_opts = $3;
1733 $$.qtype = ALTQT_CODEL;
1734 bzero(&$$.data.codel_opts,
1735 sizeof(struct codel_opts));
1737 | CODEL '(' codel_opts ')' {
1738 $$.qtype = ALTQT_CODEL;
1739 $$.data.codel_opts = $3;
1743 cbqflags_list : cbqflags_item { $$ |= $1; }
1744 | cbqflags_list comma cbqflags_item { $$ |= $3; }
1747 cbqflags_item : STRING {
1748 if (!strcmp($1, "default"))
1749 $$ = CBQCLF_DEFCLASS;
1750 else if (!strcmp($1, "borrow"))
1752 else if (!strcmp($1, "red"))
1754 else if (!strcmp($1, "ecn"))
1755 $$ = CBQCLF_RED|CBQCLF_ECN;
1756 else if (!strcmp($1, "rio"))
1758 else if (!strcmp($1, "codel"))
1761 yyerror("unknown cbq flag \"%s\"", $1);
1769 priqflags_list : priqflags_item { $$ |= $1; }
1770 | priqflags_list comma priqflags_item { $$ |= $3; }
1773 priqflags_item : STRING {
1774 if (!strcmp($1, "default"))
1775 $$ = PRCF_DEFAULTCLASS;
1776 else if (!strcmp($1, "red"))
1778 else if (!strcmp($1, "ecn"))
1779 $$ = PRCF_RED|PRCF_ECN;
1780 else if (!strcmp($1, "rio"))
1782 else if (!strcmp($1, "codel"))
1785 yyerror("unknown priq flag \"%s\"", $1);
1795 sizeof(struct node_hfsc_opts));
1802 hfscopts_list : hfscopts_item
1803 | hfscopts_list comma hfscopts_item
1806 hfscopts_item : LINKSHARE bandwidth {
1807 if (hfsc_opts.linkshare.used) {
1808 yyerror("linkshare already specified");
1811 hfsc_opts.linkshare.m2 = $2;
1812 hfsc_opts.linkshare.used = 1;
1814 | LINKSHARE '(' bandwidth comma NUMBER comma bandwidth ')'
1816 if ($5 < 0 || $5 > INT_MAX) {
1817 yyerror("timing in curve out of range");
1820 if (hfsc_opts.linkshare.used) {
1821 yyerror("linkshare already specified");
1824 hfsc_opts.linkshare.m1 = $3;
1825 hfsc_opts.linkshare.d = $5;
1826 hfsc_opts.linkshare.m2 = $7;
1827 hfsc_opts.linkshare.used = 1;
1829 | REALTIME bandwidth {
1830 if (hfsc_opts.realtime.used) {
1831 yyerror("realtime already specified");
1834 hfsc_opts.realtime.m2 = $2;
1835 hfsc_opts.realtime.used = 1;
1837 | REALTIME '(' bandwidth comma NUMBER comma bandwidth ')'
1839 if ($5 < 0 || $5 > INT_MAX) {
1840 yyerror("timing in curve out of range");
1843 if (hfsc_opts.realtime.used) {
1844 yyerror("realtime already specified");
1847 hfsc_opts.realtime.m1 = $3;
1848 hfsc_opts.realtime.d = $5;
1849 hfsc_opts.realtime.m2 = $7;
1850 hfsc_opts.realtime.used = 1;
1852 | UPPERLIMIT bandwidth {
1853 if (hfsc_opts.upperlimit.used) {
1854 yyerror("upperlimit already specified");
1857 hfsc_opts.upperlimit.m2 = $2;
1858 hfsc_opts.upperlimit.used = 1;
1860 | UPPERLIMIT '(' bandwidth comma NUMBER comma bandwidth ')'
1862 if ($5 < 0 || $5 > INT_MAX) {
1863 yyerror("timing in curve out of range");
1866 if (hfsc_opts.upperlimit.used) {
1867 yyerror("upperlimit already specified");
1870 hfsc_opts.upperlimit.m1 = $3;
1871 hfsc_opts.upperlimit.d = $5;
1872 hfsc_opts.upperlimit.m2 = $7;
1873 hfsc_opts.upperlimit.used = 1;
1876 if (!strcmp($1, "default"))
1877 hfsc_opts.flags |= HFCF_DEFAULTCLASS;
1878 else if (!strcmp($1, "red"))
1879 hfsc_opts.flags |= HFCF_RED;
1880 else if (!strcmp($1, "ecn"))
1881 hfsc_opts.flags |= HFCF_RED|HFCF_ECN;
1882 else if (!strcmp($1, "rio"))
1883 hfsc_opts.flags |= HFCF_RIO;
1884 else if (!strcmp($1, "codel"))
1885 hfsc_opts.flags |= HFCF_CODEL;
1887 yyerror("unknown hfsc flag \"%s\"", $1);
1897 sizeof(struct node_fairq_opts));
1904 fairqopts_list : fairqopts_item
1905 | fairqopts_list comma fairqopts_item
1908 fairqopts_item : LINKSHARE bandwidth {
1909 if (fairq_opts.linkshare.used) {
1910 yyerror("linkshare already specified");
1913 fairq_opts.linkshare.m2 = $2;
1914 fairq_opts.linkshare.used = 1;
1916 | LINKSHARE '(' bandwidth number bandwidth ')' {
1917 if (fairq_opts.linkshare.used) {
1918 yyerror("linkshare already specified");
1921 fairq_opts.linkshare.m1 = $3;
1922 fairq_opts.linkshare.d = $4;
1923 fairq_opts.linkshare.m2 = $5;
1924 fairq_opts.linkshare.used = 1;
1927 fairq_opts.hogs_bw = $2;
1930 fairq_opts.nbuckets = $2;
1933 if (!strcmp($1, "default"))
1934 fairq_opts.flags |= FARF_DEFAULTCLASS;
1935 else if (!strcmp($1, "red"))
1936 fairq_opts.flags |= FARF_RED;
1937 else if (!strcmp($1, "ecn"))
1938 fairq_opts.flags |= FARF_RED|FARF_ECN;
1939 else if (!strcmp($1, "rio"))
1940 fairq_opts.flags |= FARF_RIO;
1941 else if (!strcmp($1, "codel"))
1942 fairq_opts.flags |= FARF_CODEL;
1944 yyerror("unknown fairq flag \"%s\"", $1);
1954 sizeof(struct codel_opts));
1961 codelopts_list : codelopts_item
1962 | codelopts_list comma codelopts_item
1965 codelopts_item : INTERVAL number {
1966 if (codel_opts.interval) {
1967 yyerror("interval already specified");
1970 codel_opts.interval = $2;
1973 if (codel_opts.target) {
1974 yyerror("target already specified");
1977 codel_opts.target = $2;
1980 if (!strcmp($1, "ecn"))
1983 yyerror("unknown codel option \"%s\"", $1);
1991 qassign : /* empty */ { $$ = NULL; }
1992 | qassign_item { $$ = $1; }
1993 | '{' optnl qassign_list '}' { $$ = $3; }
1996 qassign_list : qassign_item optnl { $$ = $1; }
1997 | qassign_list comma qassign_item optnl {
1998 $1->tail->next = $3;
2004 qassign_item : STRING {
2005 $$ = calloc(1, sizeof(struct node_queue));
2007 err(1, "qassign_item: calloc");
2008 if (strlcpy($$->queue, $1, sizeof($$->queue)) >=
2009 sizeof($$->queue)) {
2010 yyerror("queue name '%s' too long (max "
2011 "%d chars)", $1, sizeof($$->queue)-1);
2022 pfrule : action dir logquick interface route af proto fromto
2026 struct node_state_opt *o;
2027 struct node_proto *proto;
2033 if (check_rulestate(PFCTL_STATE_FILTER))
2036 memset(&r, 0, sizeof(r));
2040 case PFRULE_RETURNRST:
2041 r.rule_flag |= PFRULE_RETURNRST;
2042 r.return_ttl = $1.w;
2044 case PFRULE_RETURNICMP:
2045 r.rule_flag |= PFRULE_RETURNICMP;
2046 r.return_icmp = $1.w;
2047 r.return_icmp6 = $1.w2;
2050 r.rule_flag |= PFRULE_RETURN;
2051 r.return_icmp = $1.w;
2052 r.return_icmp6 = $1.w2;
2060 r.rtableid = $9.rtableid;
2062 if ($9.marker & FOM_PRIO) {
2064 r.prio = PF_PRIO_ZERO;
2068 if ($9.marker & FOM_SETPRIO) {
2069 r.set_prio[0] = $9.set_prio[0];
2070 r.set_prio[1] = $9.set_prio[1];
2071 r.scrub_flags |= PFSTATE_SETPRIO;
2076 if (strlcpy(r.tagname, $9.tag,
2077 PF_TAG_NAME_SIZE) >= PF_TAG_NAME_SIZE) {
2078 yyerror("tag too long, max %u chars",
2079 PF_TAG_NAME_SIZE - 1);
2083 if (strlcpy(r.match_tagname, $9.match_tag,
2084 PF_TAG_NAME_SIZE) >= PF_TAG_NAME_SIZE) {
2085 yyerror("tag too long, max %u chars",
2086 PF_TAG_NAME_SIZE - 1);
2089 r.match_tag_not = $9.match_tag_not;
2090 if (rule_label(&r, $9.label))
2093 r.flags = $9.flags.b1;
2094 r.flagset = $9.flags.b2;
2095 if (($9.flags.b1 & $9.flags.b2) != $9.flags.b1) {
2096 yyerror("flags always false");
2099 if ($9.flags.b1 || $9.flags.b2 || $8.src_os) {
2100 for (proto = $7; proto != NULL &&
2101 proto->proto != IPPROTO_TCP;
2102 proto = proto->next)
2104 if (proto == NULL && $7 != NULL) {
2105 if ($9.flags.b1 || $9.flags.b2)
2107 "flags only apply to tcp");
2110 "OS fingerprinting only "
2115 if (($9.flags.b1 & parse_flags("S")) == 0 &&
2117 yyerror("OS fingerprinting requires "
2118 "the SYN TCP flag (flags S/SA)");
2125 r.keep_state = $9.keep.action;
2126 o = $9.keep.options;
2128 /* 'keep state' by default on pass rules. */
2129 if (!r.keep_state && !r.action &&
2130 !($9.marker & FOM_KEEP)) {
2131 r.keep_state = PF_STATE_NORMAL;
2132 o = keep_state_defaults;
2137 struct node_state_opt *p = o;
2140 case PF_STATE_OPT_MAX:
2142 yyerror("state option 'max' "
2143 "multiple definitions");
2146 r.max_states = o->data.max_states;
2148 case PF_STATE_OPT_NOSYNC:
2149 if (r.rule_flag & PFRULE_NOSYNC) {
2150 yyerror("state option 'sync' "
2151 "multiple definitions");
2154 r.rule_flag |= PFRULE_NOSYNC;
2156 case PF_STATE_OPT_SRCTRACK:
2158 yyerror("state option "
2160 "multiple definitions");
2163 srctrack = o->data.src_track;
2164 r.rule_flag |= PFRULE_SRCTRACK;
2166 case PF_STATE_OPT_MAX_SRC_STATES:
2167 if (r.max_src_states) {
2168 yyerror("state option "
2170 "multiple definitions");
2173 if (o->data.max_src_states == 0) {
2174 yyerror("'max-src-states' must "
2179 o->data.max_src_states;
2180 r.rule_flag |= PFRULE_SRCTRACK;
2182 case PF_STATE_OPT_OVERLOAD:
2183 if (r.overload_tblname[0]) {
2184 yyerror("multiple 'overload' "
2185 "table definitions");
2188 if (strlcpy(r.overload_tblname,
2189 o->data.overload.tblname,
2190 PF_TABLE_NAME_SIZE) >=
2191 PF_TABLE_NAME_SIZE) {
2192 yyerror("state option: "
2196 r.flush = o->data.overload.flush;
2198 case PF_STATE_OPT_MAX_SRC_CONN:
2199 if (r.max_src_conn) {
2200 yyerror("state option "
2202 "multiple definitions");
2205 if (o->data.max_src_conn == 0) {
2206 yyerror("'max-src-conn' "
2211 o->data.max_src_conn;
2212 r.rule_flag |= PFRULE_SRCTRACK |
2213 PFRULE_RULESRCTRACK;
2215 case PF_STATE_OPT_MAX_SRC_CONN_RATE:
2216 if (r.max_src_conn_rate.limit) {
2217 yyerror("state option "
2218 "'max-src-conn-rate' "
2219 "multiple definitions");
2222 if (!o->data.max_src_conn_rate.limit ||
2223 !o->data.max_src_conn_rate.seconds) {
2224 yyerror("'max-src-conn-rate' "
2225 "values must be > 0");
2228 if (o->data.max_src_conn_rate.limit >
2230 yyerror("'max-src-conn-rate' "
2231 "maximum rate must be < %u",
2235 r.max_src_conn_rate.limit =
2236 o->data.max_src_conn_rate.limit;
2237 r.max_src_conn_rate.seconds =
2238 o->data.max_src_conn_rate.seconds;
2239 r.rule_flag |= PFRULE_SRCTRACK |
2240 PFRULE_RULESRCTRACK;
2242 case PF_STATE_OPT_MAX_SRC_NODES:
2243 if (r.max_src_nodes) {
2244 yyerror("state option "
2246 "multiple definitions");
2249 if (o->data.max_src_nodes == 0) {
2250 yyerror("'max-src-nodes' must "
2255 o->data.max_src_nodes;
2256 r.rule_flag |= PFRULE_SRCTRACK |
2257 PFRULE_RULESRCTRACK;
2259 case PF_STATE_OPT_STATELOCK:
2261 yyerror("state locking option: "
2262 "multiple definitions");
2266 r.rule_flag |= o->data.statelock;
2268 case PF_STATE_OPT_SLOPPY:
2269 if (r.rule_flag & PFRULE_STATESLOPPY) {
2270 yyerror("state sloppy option: "
2271 "multiple definitions");
2274 r.rule_flag |= PFRULE_STATESLOPPY;
2276 case PF_STATE_OPT_TIMEOUT:
2277 if (o->data.timeout.number ==
2278 PFTM_ADAPTIVE_START ||
2279 o->data.timeout.number ==
2282 if (r.timeout[o->data.timeout.number]) {
2283 yyerror("state timeout %s "
2284 "multiple definitions",
2285 pf_timeouts[o->data.
2286 timeout.number].name);
2289 r.timeout[o->data.timeout.number] =
2290 o->data.timeout.seconds;
2297 /* 'flags S/SA' by default on stateful rules */
2298 if (!r.action && !r.flags && !r.flagset &&
2299 !$9.fragment && !($9.marker & FOM_FLAGS) &&
2301 r.flags = parse_flags("S");
2302 r.flagset = parse_flags("SA");
2304 if (!adaptive && r.max_states) {
2305 r.timeout[PFTM_ADAPTIVE_START] =
2306 (r.max_states / 10) * 6;
2307 r.timeout[PFTM_ADAPTIVE_END] =
2308 (r.max_states / 10) * 12;
2310 if (r.rule_flag & PFRULE_SRCTRACK) {
2311 if (srctrack == PF_SRCTRACK_GLOBAL &&
2313 yyerror("'max-src-nodes' is "
2314 "incompatible with "
2315 "'source-track global'");
2318 if (srctrack == PF_SRCTRACK_GLOBAL &&
2320 yyerror("'max-src-conn' is "
2321 "incompatible with "
2322 "'source-track global'");
2325 if (srctrack == PF_SRCTRACK_GLOBAL &&
2326 r.max_src_conn_rate.seconds) {
2327 yyerror("'max-src-conn-rate' is "
2328 "incompatible with "
2329 "'source-track global'");
2332 if (r.timeout[PFTM_SRC_NODE] <
2333 r.max_src_conn_rate.seconds)
2334 r.timeout[PFTM_SRC_NODE] =
2335 r.max_src_conn_rate.seconds;
2336 r.rule_flag |= PFRULE_SRCTRACK;
2337 if (srctrack == PF_SRCTRACK_RULE)
2338 r.rule_flag |= PFRULE_RULESRCTRACK;
2340 if (r.keep_state && !statelock)
2341 r.rule_flag |= default_statelock;
2344 r.rule_flag |= PFRULE_FRAGMENT;
2345 r.allow_opts = $9.allowopts;
2347 decide_address_family($8.src.host, &r.af);
2348 decide_address_family($8.dst.host, &r.af);
2352 yyerror("direction must be explicit "
2353 "with rules that specify routing");
2357 r.rpool.opts = $5.pool_opts;
2359 memcpy(&r.rpool.key, $5.key,
2360 sizeof(struct pf_poolhashkey));
2363 decide_address_family($5.host, &r.af);
2364 remove_invalid_hosts(&$5.host, &r.af);
2365 if ($5.host == NULL) {
2366 yyerror("no routing address with "
2367 "matching address family found.");
2370 if ((r.rpool.opts & PF_POOL_TYPEMASK) ==
2371 PF_POOL_NONE && ($5.host->next != NULL ||
2372 $5.host->addr.type == PF_ADDR_TABLE ||
2373 DYNIF_MULTIADDR($5.host->addr)))
2374 r.rpool.opts |= PF_POOL_ROUNDROBIN;
2375 if ((r.rpool.opts & PF_POOL_TYPEMASK) !=
2376 PF_POOL_ROUNDROBIN &&
2377 disallow_table($5.host, "tables are only "
2378 "supported in round-robin routing pools"))
2380 if ((r.rpool.opts & PF_POOL_TYPEMASK) !=
2381 PF_POOL_ROUNDROBIN &&
2382 disallow_alias($5.host, "interface (%s) "
2383 "is only supported in round-robin "
2386 if ($5.host->next != NULL) {
2387 if ((r.rpool.opts & PF_POOL_TYPEMASK) !=
2388 PF_POOL_ROUNDROBIN) {
2389 yyerror("r.rpool.opts must "
2390 "be PF_POOL_ROUNDROBIN");
2395 if ($9.queues.qname != NULL) {
2396 if (strlcpy(r.qname, $9.queues.qname,
2397 sizeof(r.qname)) >= sizeof(r.qname)) {
2398 yyerror("rule qname too long (max "
2399 "%d chars)", sizeof(r.qname)-1);
2402 free($9.queues.qname);
2404 if ($9.queues.pqname != NULL) {
2405 if (strlcpy(r.pqname, $9.queues.pqname,
2406 sizeof(r.pqname)) >= sizeof(r.pqname)) {
2407 yyerror("rule pqname too long (max "
2408 "%d chars)", sizeof(r.pqname)-1);
2411 free($9.queues.pqname);
2414 r.divert.port = $9.divert.port;
2416 if ((r.divert.port = $9.divert.port)) {
2417 if (r.direction == PF_OUT) {
2418 if ($9.divert.addr) {
2419 yyerror("address specified "
2420 "for outgoing divert");
2423 bzero(&r.divert.addr,
2424 sizeof(r.divert.addr));
2426 if (!$9.divert.addr) {
2427 yyerror("no address specified "
2428 "for incoming divert");
2431 if ($9.divert.addr->af != r.af) {
2432 yyerror("address family "
2433 "mismatch for divert");
2437 $9.divert.addr->addr.v.a.addr;
2442 expand_rule(&r, $4, $5.host, $7, $8.src_os,
2443 $8.src.host, $8.src.port, $8.dst.host, $8.dst.port,
2444 $9.uid, $9.gid, $9.icmpspec, "");
2449 bzero(&filter_opts, sizeof filter_opts);
2450 filter_opts.rtableid = -1;
2453 { $$ = filter_opts; }
2455 bzero(&filter_opts, sizeof filter_opts);
2456 filter_opts.rtableid = -1;
2461 filter_opts_l : filter_opts_l filter_opt
2465 filter_opt : USER uids {
2466 if (filter_opts.uid)
2467 $2->tail->next = filter_opts.uid;
2468 filter_opts.uid = $2;
2471 if (filter_opts.gid)
2472 $2->tail->next = filter_opts.gid;
2473 filter_opts.gid = $2;
2476 if (filter_opts.marker & FOM_FLAGS) {
2477 yyerror("flags cannot be redefined");
2480 filter_opts.marker |= FOM_FLAGS;
2481 filter_opts.flags.b1 |= $1.b1;
2482 filter_opts.flags.b2 |= $1.b2;
2483 filter_opts.flags.w |= $1.w;
2484 filter_opts.flags.w2 |= $1.w2;
2487 if (filter_opts.marker & FOM_ICMP) {
2488 yyerror("icmp-type cannot be redefined");
2491 filter_opts.marker |= FOM_ICMP;
2492 filter_opts.icmpspec = $1;
2495 if (filter_opts.marker & FOM_PRIO) {
2496 yyerror("prio cannot be redefined");
2499 if ($2 < 0 || $2 > PF_PRIO_MAX) {
2500 yyerror("prio must be 0 - %u", PF_PRIO_MAX);
2503 filter_opts.marker |= FOM_PRIO;
2504 filter_opts.prio = $2;
2507 if (filter_opts.marker & FOM_TOS) {
2508 yyerror("tos cannot be redefined");
2511 filter_opts.marker |= FOM_TOS;
2512 filter_opts.tos = $2;
2515 if (filter_opts.marker & FOM_KEEP) {
2516 yyerror("modulate or keep cannot be redefined");
2519 filter_opts.marker |= FOM_KEEP;
2520 filter_opts.keep.action = $1.action;
2521 filter_opts.keep.options = $1.options;
2524 filter_opts.fragment = 1;
2527 filter_opts.allowopts = 1;
2530 if (filter_opts.label) {
2531 yyerror("label cannot be redefined");
2534 filter_opts.label = $1;
2537 if (filter_opts.queues.qname) {
2538 yyerror("queue cannot be redefined");
2541 filter_opts.queues = $1;
2544 filter_opts.tag = $2;
2546 | not TAGGED string {
2547 filter_opts.match_tag = $3;
2548 filter_opts.match_tag_not = $1;
2550 | PROBABILITY probability {
2553 p = floor($2 * UINT_MAX + 0.5);
2554 if (p < 0.0 || p > UINT_MAX) {
2555 yyerror("invalid probability: %lf", p);
2558 filter_opts.prob = (u_int32_t)p;
2559 if (filter_opts.prob == 0)
2560 filter_opts.prob = 1;
2563 if ($2 < 0 || $2 > rt_tableid_max()) {
2564 yyerror("invalid rtable id");
2567 filter_opts.rtableid = $2;
2569 | DIVERTTO portplain {
2571 filter_opts.divert.port = $2.a;
2572 if (!filter_opts.divert.port) {
2573 yyerror("invalid divert port: %u", ntohs($2.a));
2578 | DIVERTTO STRING PORT portplain {
2580 if ((filter_opts.divert.addr = host($2)) == NULL) {
2581 yyerror("could not parse divert address: %s",
2590 filter_opts.divert.port = $4.a;
2591 if (!filter_opts.divert.port) {
2592 yyerror("invalid divert port: %u", ntohs($4.a));
2598 yyerror("divert-reply has no meaning in FreeBSD pf(4)");
2601 filter_opts.divert.port = 1; /* some random value */
2607 filter_sets : SET '(' filter_sets_l ')' { $$ = filter_opts; }
2608 | SET filter_set { $$ = filter_opts; }
2611 filter_sets_l : filter_sets_l comma filter_set
2616 if (filter_opts.marker & FOM_SETPRIO) {
2617 yyerror("prio cannot be redefined");
2620 filter_opts.marker |= FOM_SETPRIO;
2621 filter_opts.set_prio[0] = $1.b1;
2622 filter_opts.set_prio[1] = $1.b2;
2624 prio : PRIO NUMBER {
2625 if ($2 < 0 || $2 > PF_PRIO_MAX) {
2626 yyerror("prio must be 0 - %u", PF_PRIO_MAX);
2631 | PRIO '(' NUMBER comma NUMBER ')' {
2632 if ($3 < 0 || $3 > PF_PRIO_MAX ||
2633 $5 < 0 || $5 > PF_PRIO_MAX) {
2634 yyerror("prio must be 0 - %u", PF_PRIO_MAX);
2642 probability : STRING {
2644 double p = strtod($1, &e);
2651 yyerror("invalid probability: %s", $1);
2667 $$.w = returnicmpdefault;
2668 $$.w2 = returnicmp6default;
2670 | BLOCK blockspec { $$ = $2; $$.b1 = PF_DROP; }
2673 blockspec : /* empty */ {
2674 $$.b2 = blockpolicy;
2675 $$.w = returnicmpdefault;
2676 $$.w2 = returnicmp6default;
2679 $$.b2 = PFRULE_DROP;
2684 $$.b2 = PFRULE_RETURNRST;
2688 | RETURNRST '(' TTL NUMBER ')' {
2689 if ($4 < 0 || $4 > 255) {
2690 yyerror("illegal ttl value %d", $4);
2693 $$.b2 = PFRULE_RETURNRST;
2698 $$.b2 = PFRULE_RETURNICMP;
2699 $$.w = returnicmpdefault;
2700 $$.w2 = returnicmp6default;
2703 $$.b2 = PFRULE_RETURNICMP;
2704 $$.w = returnicmpdefault;
2705 $$.w2 = returnicmp6default;
2707 | RETURNICMP '(' reticmpspec ')' {
2708 $$.b2 = PFRULE_RETURNICMP;
2710 $$.w2 = returnicmpdefault;
2712 | RETURNICMP6 '(' reticmp6spec ')' {
2713 $$.b2 = PFRULE_RETURNICMP;
2714 $$.w = returnicmpdefault;
2717 | RETURNICMP '(' reticmpspec comma reticmp6spec ')' {
2718 $$.b2 = PFRULE_RETURNICMP;
2723 $$.b2 = PFRULE_RETURN;
2724 $$.w = returnicmpdefault;
2725 $$.w2 = returnicmp6default;
2729 reticmpspec : STRING {
2730 if (!($$ = parseicmpspec($1, AF_INET))) {
2739 if ($1 < 0 || $1 > 255) {
2740 yyerror("invalid icmp code %lu", $1);
2743 icmptype = returnicmpdefault >> 8;
2744 $$ = (icmptype << 8 | $1);
2748 reticmp6spec : STRING {
2749 if (!($$ = parseicmpspec($1, AF_INET6))) {
2758 if ($1 < 0 || $1 > 255) {
2759 yyerror("invalid icmp code %lu", $1);
2762 icmptype = returnicmp6default >> 8;
2763 $$ = (icmptype << 8 | $1);
2767 dir : /* empty */ { $$ = PF_INOUT; }
2768 | IN { $$ = PF_IN; }
2769 | OUT { $$ = PF_OUT; }
2772 quick : /* empty */ { $$.quick = 0; }
2773 | QUICK { $$.quick = 1; }
2776 logquick : /* empty */ { $$.log = 0; $$.quick = 0; $$.logif = 0; }
2777 | log { $$ = $1; $$.quick = 0; }
2778 | QUICK { $$.quick = 1; $$.log = 0; $$.logif = 0; }
2779 | log QUICK { $$ = $1; $$.quick = 1; }
2780 | QUICK log { $$ = $2; $$.quick = 1; }
2783 log : LOG { $$.log = PF_LOG; $$.logif = 0; }
2784 | LOG '(' logopts ')' {
2785 $$.log = PF_LOG | $3.log;
2786 $$.logif = $3.logif;
2790 logopts : logopt { $$ = $1; }
2791 | logopts comma logopt {
2792 $$.log = $1.log | $3.log;
2793 $$.logif = $3.logif;
2795 $$.logif = $1.logif;
2799 logopt : ALL { $$.log = PF_LOG_ALL; $$.logif = 0; }
2800 | USER { $$.log = PF_LOG_SOCKET_LOOKUP; $$.logif = 0; }
2801 | GROUP { $$.log = PF_LOG_SOCKET_LOOKUP; $$.logif = 0; }
2807 if (strncmp($2, "pflog", 5)) {
2808 yyerror("%s: should be a pflog interface", $2);
2812 i = strtonum($2 + 5, 0, 255, &errstr);
2814 yyerror("%s: %s", $2, errstr);
2823 interface : /* empty */ { $$ = NULL; }
2824 | ON if_item_not { $$ = $2; }
2825 | ON '{' optnl if_list '}' { $$ = $4; }
2828 if_list : if_item_not optnl { $$ = $1; }
2829 | if_list comma if_item_not optnl {
2830 $1->tail->next = $3;
2836 if_item_not : not if_item { $$ = $2; $$->not = $1; }
2840 struct node_host *n;
2842 $$ = calloc(1, sizeof(struct node_if));
2844 err(1, "if_item: calloc");
2845 if (strlcpy($$->ifname, $1, sizeof($$->ifname)) >=
2846 sizeof($$->ifname)) {
2849 yyerror("interface name too long");
2853 if ((n = ifa_exists($1)) != NULL)
2854 $$->ifa_flags = n->ifa_flags;
2863 af : /* empty */ { $$ = 0; }
2864 | INET { $$ = AF_INET; }
2865 | INET6 { $$ = AF_INET6; }
2868 proto : /* empty */ { $$ = NULL; }
2869 | PROTO proto_item { $$ = $2; }
2870 | PROTO '{' optnl proto_list '}' { $$ = $4; }
2873 proto_list : proto_item optnl { $$ = $1; }
2874 | proto_list comma proto_item optnl {
2875 $1->tail->next = $3;
2881 proto_item : protoval {
2886 yyerror("proto 0 cannot be used");
2889 $$ = calloc(1, sizeof(struct node_proto));
2891 err(1, "proto_item: calloc");
2901 p = getprotobyname($1);
2903 yyerror("unknown protocol %s", $1);
2911 if ($1 < 0 || $1 > 255) {
2912 yyerror("protocol outside range");
2932 os : /* empty */ { $$ = NULL; }
2933 | OS xos { $$ = $2; }
2934 | OS '{' optnl os_list '}' { $$ = $4; }
2938 $$ = calloc(1, sizeof(struct node_os));
2940 err(1, "os: calloc");
2946 os_list : xos optnl { $$ = $1; }
2947 | os_list comma xos optnl {
2948 $1->tail->next = $3;
2954 from : /* empty */ {
2968 if (disallow_urpf_failed($2.host, "\"urpf-failed\" is "
2969 "not permitted in a destination address"))
2975 ipportspec : ipspec {
2979 | ipspec PORT portspec {
2993 ipspec : ANY { $$ = NULL; }
2994 | xhost { $$ = $1; }
2995 | '{' optnl host_list '}' { $$ = $3; }
2998 toipspec : TO ipspec { $$ = $2; }
2999 | /* empty */ { $$ = NULL; }
3002 host_list : ipspec optnl { $$ = $1; }
3003 | host_list comma ipspec optnl {
3006 else if ($1 == NULL)
3009 $1->tail->next = $3;
3010 $1->tail = $3->tail;
3017 struct node_host *n;
3019 for (n = $2; n != NULL; n = n->next)
3024 $$ = calloc(1, sizeof(struct node_host));
3026 err(1, "xhost: calloc");
3027 $$->addr.type = PF_ADDR_NOROUTE;
3033 $$ = calloc(1, sizeof(struct node_host));
3035 err(1, "xhost: calloc");
3036 $$->addr.type = PF_ADDR_URPFFAILED;
3044 if (($$ = host($1)) == NULL) {
3045 /* error. "any" is handled elsewhere */
3047 yyerror("could not parse host specification");
3053 | STRING '-' STRING {
3054 struct node_host *b, *e;
3056 if ((b = host($1)) == NULL || (e = host($3)) == NULL) {
3059 yyerror("could not parse host specification");
3062 if (b->af != e->af ||
3063 b->addr.type != PF_ADDR_ADDRMASK ||
3064 e->addr.type != PF_ADDR_ADDRMASK ||
3065 unmask(&b->addr.v.a.mask, b->af) !=
3066 (b->af == AF_INET ? 32 : 128) ||
3067 unmask(&e->addr.v.a.mask, e->af) !=
3068 (e->af == AF_INET ? 32 : 128) ||
3069 b->next != NULL || b->not ||
3070 e->next != NULL || e->not) {
3075 yyerror("invalid address range");
3078 memcpy(&b->addr.v.a.mask, &e->addr.v.a.addr,
3079 sizeof(b->addr.v.a.mask));
3080 b->addr.type = PF_ADDR_RANGE;
3086 | STRING '/' NUMBER {
3089 if (asprintf(&buf, "%s/%lld", $1, (long long)$3) == -1)
3090 err(1, "host: asprintf");
3092 if (($$ = host(buf)) == NULL) {
3093 /* error. "any" is handled elsewhere */
3095 yyerror("could not parse host specification");
3100 | NUMBER '/' NUMBER {
3103 /* ie. for 10/8 parsing */
3105 if (asprintf(&buf, "%lld/%lld", (long long)$1, (long long)$3) == -1)
3107 if (asprintf(&buf, "%lld/%lld", $1, $3) == -1)
3109 err(1, "host: asprintf");
3110 if (($$ = host(buf)) == NULL) {
3111 /* error. "any" is handled elsewhere */
3113 yyerror("could not parse host specification");
3119 | dynaddr '/' NUMBER {
3120 struct node_host *n;
3122 if ($3 < 0 || $3 > 128) {
3123 yyerror("bit number too big");
3127 for (n = $1; n != NULL; n = n->next)
3131 if (strlen($2) >= PF_TABLE_NAME_SIZE) {
3132 yyerror("table name '%s' too long", $2);
3136 $$ = calloc(1, sizeof(struct node_host));
3138 err(1, "host: calloc");
3139 $$->addr.type = PF_ADDR_TABLE;
3140 if (strlcpy($$->addr.v.tblname, $2,
3141 sizeof($$->addr.v.tblname)) >=
3142 sizeof($$->addr.v.tblname))
3143 errx(1, "host: strlcpy");
3154 if (atoul($1, &ulval) == -1) {
3155 yyerror("%s is not a number", $1);
3164 dynaddr : '(' STRING ')' {
3169 if (!isalpha(op[0])) {
3170 yyerror("invalid interface name '%s'", op);
3174 while ((p = strrchr($2, ':')) != NULL) {
3175 if (!strcmp(p+1, "network"))
3176 flags |= PFI_AFLAG_NETWORK;
3177 else if (!strcmp(p+1, "broadcast"))
3178 flags |= PFI_AFLAG_BROADCAST;
3179 else if (!strcmp(p+1, "peer"))
3180 flags |= PFI_AFLAG_PEER;
3181 else if (!strcmp(p+1, "0"))
3182 flags |= PFI_AFLAG_NOALIAS;
3184 yyerror("interface %s has bad modifier",
3191 if (flags & (flags - 1) & PFI_AFLAG_MODEMASK) {
3193 yyerror("illegal combination of "
3194 "interface modifiers");
3197 $$ = calloc(1, sizeof(struct node_host));
3199 err(1, "address: calloc");
3201 set_ipmask($$, 128);
3202 $$->addr.type = PF_ADDR_DYNIFTL;
3203 $$->addr.iflags = flags;
3204 if (strlcpy($$->addr.v.ifname, $2,
3205 sizeof($$->addr.v.ifname)) >=
3206 sizeof($$->addr.v.ifname)) {
3209 yyerror("interface name too long");
3218 portspec : port_item { $$ = $1; }
3219 | '{' optnl port_list '}' { $$ = $3; }
3222 port_list : port_item optnl { $$ = $1; }
3223 | port_list comma port_item optnl {
3224 $1->tail->next = $3;
3230 port_item : portrange {
3231 $$ = calloc(1, sizeof(struct node_port));
3233 err(1, "port_item: calloc");
3243 | unaryop portrange {
3245 yyerror("':' cannot be used with an other "
3249 $$ = calloc(1, sizeof(struct node_port));
3251 err(1, "port_item: calloc");
3258 | portrange PORTBINARY portrange {
3260 yyerror("':' cannot be used with an other "
3264 $$ = calloc(1, sizeof(struct node_port));
3266 err(1, "port_item: calloc");
3275 portplain : numberstring {
3276 if (parseport($1, &$$, 0) == -1) {
3284 portrange : numberstring {
3285 if (parseport($1, &$$, PPORT_RANGE) == -1) {
3293 uids : uid_item { $$ = $1; }
3294 | '{' optnl uid_list '}' { $$ = $3; }
3297 uid_list : uid_item optnl { $$ = $1; }
3298 | uid_list comma uid_item optnl {
3299 $1->tail->next = $3;
3306 $$ = calloc(1, sizeof(struct node_uid));
3308 err(1, "uid_item: calloc");
3316 if ($2 == UID_MAX && $1 != PF_OP_EQ && $1 != PF_OP_NE) {
3317 yyerror("user unknown requires operator = or "
3321 $$ = calloc(1, sizeof(struct node_uid));
3323 err(1, "uid_item: calloc");
3330 | uid PORTBINARY uid {
3331 if ($1 == UID_MAX || $3 == UID_MAX) {
3332 yyerror("user unknown requires operator = or "
3336 $$ = calloc(1, sizeof(struct node_uid));
3338 err(1, "uid_item: calloc");
3348 if (!strcmp($1, "unknown"))
3353 if ((pw = getpwnam($1)) == NULL) {
3354 yyerror("unknown user %s", $1);
3363 if ($1 < 0 || $1 >= UID_MAX) {
3364 yyerror("illegal uid value %lu", $1);
3371 gids : gid_item { $$ = $1; }
3372 | '{' optnl gid_list '}' { $$ = $3; }
3375 gid_list : gid_item optnl { $$ = $1; }
3376 | gid_list comma gid_item optnl {
3377 $1->tail->next = $3;
3384 $$ = calloc(1, sizeof(struct node_gid));
3386 err(1, "gid_item: calloc");
3394 if ($2 == GID_MAX && $1 != PF_OP_EQ && $1 != PF_OP_NE) {
3395 yyerror("group unknown requires operator = or "
3399 $$ = calloc(1, sizeof(struct node_gid));
3401 err(1, "gid_item: calloc");
3408 | gid PORTBINARY gid {
3409 if ($1 == GID_MAX || $3 == GID_MAX) {
3410 yyerror("group unknown requires operator = or "
3414 $$ = calloc(1, sizeof(struct node_gid));
3416 err(1, "gid_item: calloc");
3426 if (!strcmp($1, "unknown"))
3431 if ((grp = getgrnam($1)) == NULL) {
3432 yyerror("unknown group %s", $1);
3441 if ($1 < 0 || $1 >= GID_MAX) {
3442 yyerror("illegal gid value %lu", $1);
3452 if ((f = parse_flags($1)) < 0) {
3453 yyerror("bad flags %s", $1);
3462 flags : FLAGS flag '/' flag { $$.b1 = $2.b1; $$.b2 = $4.b1; }
3463 | FLAGS '/' flag { $$.b1 = 0; $$.b2 = $3.b1; }
3464 | FLAGS ANY { $$.b1 = 0; $$.b2 = 0; }
3467 icmpspec : ICMPTYPE icmp_item { $$ = $2; }
3468 | ICMPTYPE '{' optnl icmp_list '}' { $$ = $4; }
3469 | ICMP6TYPE icmp6_item { $$ = $2; }
3470 | ICMP6TYPE '{' optnl icmp6_list '}' { $$ = $4; }
3473 icmp_list : icmp_item optnl { $$ = $1; }
3474 | icmp_list comma icmp_item optnl {
3475 $1->tail->next = $3;
3481 icmp6_list : icmp6_item optnl { $$ = $1; }
3482 | icmp6_list comma icmp6_item optnl {
3483 $1->tail->next = $3;
3489 icmp_item : icmptype {
3490 $$ = calloc(1, sizeof(struct node_icmp));
3492 err(1, "icmp_item: calloc");
3495 $$->proto = IPPROTO_ICMP;
3499 | icmptype CODE STRING {
3500 const struct icmpcodeent *p;
3502 if ((p = geticmpcodebyname($1-1, $3, AF_INET)) == NULL) {
3503 yyerror("unknown icmp-code %s", $3);
3509 $$ = calloc(1, sizeof(struct node_icmp));
3511 err(1, "icmp_item: calloc");
3513 $$->code = p->code + 1;
3514 $$->proto = IPPROTO_ICMP;
3518 | icmptype CODE NUMBER {
3519 if ($3 < 0 || $3 > 255) {
3520 yyerror("illegal icmp-code %lu", $3);
3523 $$ = calloc(1, sizeof(struct node_icmp));
3525 err(1, "icmp_item: calloc");
3528 $$->proto = IPPROTO_ICMP;
3534 icmp6_item : icmp6type {
3535 $$ = calloc(1, sizeof(struct node_icmp));
3537 err(1, "icmp_item: calloc");
3540 $$->proto = IPPROTO_ICMPV6;
3544 | icmp6type CODE STRING {
3545 const struct icmpcodeent *p;
3547 if ((p = geticmpcodebyname($1-1, $3, AF_INET6)) == NULL) {
3548 yyerror("unknown icmp6-code %s", $3);
3554 $$ = calloc(1, sizeof(struct node_icmp));
3556 err(1, "icmp_item: calloc");
3558 $$->code = p->code + 1;
3559 $$->proto = IPPROTO_ICMPV6;
3563 | icmp6type CODE NUMBER {
3564 if ($3 < 0 || $3 > 255) {
3565 yyerror("illegal icmp-code %lu", $3);
3568 $$ = calloc(1, sizeof(struct node_icmp));
3570 err(1, "icmp_item: calloc");
3573 $$->proto = IPPROTO_ICMPV6;
3580 const struct icmptypeent *p;
3582 if ((p = geticmptypebyname($1, AF_INET)) == NULL) {
3583 yyerror("unknown icmp-type %s", $1);
3591 if ($1 < 0 || $1 > 255) {
3592 yyerror("illegal icmp-type %lu", $1);
3599 icmp6type : STRING {
3600 const struct icmptypeent *p;
3602 if ((p = geticmptypebyname($1, AF_INET6)) ==
3604 yyerror("unknown icmp6-type %s", $1);
3612 if ($1 < 0 || $1 > 255) {
3613 yyerror("illegal icmp6-type %lu", $1);
3624 if (map_tos($1, &val))
3626 else if ($1[0] == '0' && $1[1] == 'x') {
3628 $$ = strtoul($1, &end, 16);
3629 if (errno || *end != '\0')
3632 $$ = 256; /* flag bad argument */
3633 if ($$ < 0 || $$ > 255) {
3634 yyerror("illegal tos value %s", $1);
3642 if ($$ < 0 || $$ > 255) {
3643 yyerror("illegal tos value %s", $1);
3649 sourcetrack : SOURCETRACK { $$ = PF_SRCTRACK; }
3650 | SOURCETRACK GLOBAL { $$ = PF_SRCTRACK_GLOBAL; }
3651 | SOURCETRACK RULE { $$ = PF_SRCTRACK_RULE; }
3654 statelock : IFBOUND {
3655 $$ = PFRULE_IFBOUND;
3666 | KEEP STATE state_opt_spec {
3667 $$.action = PF_STATE_NORMAL;
3670 | MODULATE STATE state_opt_spec {
3671 $$.action = PF_STATE_MODULATE;
3674 | SYNPROXY STATE state_opt_spec {
3675 $$.action = PF_STATE_SYNPROXY;
3680 flush : /* empty */ { $$ = 0; }
3681 | FLUSH { $$ = PF_FLUSH; }
3683 $$ = PF_FLUSH | PF_FLUSH_GLOBAL;
3687 state_opt_spec : '(' state_opt_list ')' { $$ = $2; }
3688 | /* empty */ { $$ = NULL; }
3691 state_opt_list : state_opt_item { $$ = $1; }
3692 | state_opt_list comma state_opt_item {
3693 $1->tail->next = $3;
3699 state_opt_item : MAXIMUM NUMBER {
3700 if ($2 < 0 || $2 > UINT_MAX) {
3701 yyerror("only positive values permitted");
3704 $$ = calloc(1, sizeof(struct node_state_opt));
3706 err(1, "state_opt_item: calloc");
3707 $$->type = PF_STATE_OPT_MAX;
3708 $$->data.max_states = $2;
3713 $$ = calloc(1, sizeof(struct node_state_opt));
3715 err(1, "state_opt_item: calloc");
3716 $$->type = PF_STATE_OPT_NOSYNC;
3720 | MAXSRCSTATES NUMBER {
3721 if ($2 < 0 || $2 > UINT_MAX) {
3722 yyerror("only positive values permitted");
3725 $$ = calloc(1, sizeof(struct node_state_opt));
3727 err(1, "state_opt_item: calloc");
3728 $$->type = PF_STATE_OPT_MAX_SRC_STATES;
3729 $$->data.max_src_states = $2;
3733 | MAXSRCCONN NUMBER {
3734 if ($2 < 0 || $2 > UINT_MAX) {
3735 yyerror("only positive values permitted");
3738 $$ = calloc(1, sizeof(struct node_state_opt));
3740 err(1, "state_opt_item: calloc");
3741 $$->type = PF_STATE_OPT_MAX_SRC_CONN;
3742 $$->data.max_src_conn = $2;
3746 | MAXSRCCONNRATE NUMBER '/' NUMBER {
3747 if ($2 < 0 || $2 > UINT_MAX ||
3748 $4 < 0 || $4 > UINT_MAX) {
3749 yyerror("only positive values permitted");
3752 $$ = calloc(1, sizeof(struct node_state_opt));
3754 err(1, "state_opt_item: calloc");
3755 $$->type = PF_STATE_OPT_MAX_SRC_CONN_RATE;
3756 $$->data.max_src_conn_rate.limit = $2;
3757 $$->data.max_src_conn_rate.seconds = $4;
3761 | OVERLOAD '<' STRING '>' flush {
3762 if (strlen($3) >= PF_TABLE_NAME_SIZE) {
3763 yyerror("table name '%s' too long", $3);
3767 $$ = calloc(1, sizeof(struct node_state_opt));
3769 err(1, "state_opt_item: calloc");
3770 if (strlcpy($$->data.overload.tblname, $3,
3771 PF_TABLE_NAME_SIZE) >= PF_TABLE_NAME_SIZE)
3772 errx(1, "state_opt_item: strlcpy");
3774 $$->type = PF_STATE_OPT_OVERLOAD;
3775 $$->data.overload.flush = $5;
3779 | MAXSRCNODES NUMBER {
3780 if ($2 < 0 || $2 > UINT_MAX) {
3781 yyerror("only positive values permitted");
3784 $$ = calloc(1, sizeof(struct node_state_opt));
3786 err(1, "state_opt_item: calloc");
3787 $$->type = PF_STATE_OPT_MAX_SRC_NODES;
3788 $$->data.max_src_nodes = $2;
3793 $$ = calloc(1, sizeof(struct node_state_opt));
3795 err(1, "state_opt_item: calloc");
3796 $$->type = PF_STATE_OPT_SRCTRACK;
3797 $$->data.src_track = $1;
3802 $$ = calloc(1, sizeof(struct node_state_opt));
3804 err(1, "state_opt_item: calloc");
3805 $$->type = PF_STATE_OPT_STATELOCK;
3806 $$->data.statelock = $1;
3811 $$ = calloc(1, sizeof(struct node_state_opt));
3813 err(1, "state_opt_item: calloc");
3814 $$->type = PF_STATE_OPT_SLOPPY;
3821 if ($2 < 0 || $2 > UINT_MAX) {
3822 yyerror("only positive values permitted");
3825 for (i = 0; pf_timeouts[i].name &&
3826 strcmp(pf_timeouts[i].name, $1); ++i)
3828 if (!pf_timeouts[i].name) {
3829 yyerror("illegal timeout name %s", $1);
3833 if (strchr(pf_timeouts[i].name, '.') == NULL) {
3834 yyerror("illegal state timeout %s", $1);
3839 $$ = calloc(1, sizeof(struct node_state_opt));
3841 err(1, "state_opt_item: calloc");
3842 $$->type = PF_STATE_OPT_TIMEOUT;
3843 $$->data.timeout.number = pf_timeouts[i].timeout;
3844 $$->data.timeout.seconds = $2;
3850 label : LABEL STRING {
3855 qname : QUEUE STRING {
3859 | QUEUE '(' STRING ')' {
3863 | QUEUE '(' STRING comma STRING ')' {
3869 no : /* empty */ { $$ = 0; }
3873 portstar : numberstring {
3874 if (parseport($1, &$$, PPORT_RANGE|PPORT_STAR) == -1) {
3882 redirspec : host { $$ = $1; }
3883 | '{' optnl redir_host_list '}' { $$ = $3; }
3886 redir_host_list : host optnl { $$ = $1; }
3887 | redir_host_list comma host optnl {
3888 $1->tail->next = $3;
3889 $1->tail = $3->tail;
3894 redirpool : /* empty */ { $$ = NULL; }
3896 $$ = calloc(1, sizeof(struct redirection));
3898 err(1, "redirection: calloc");
3900 $$->rport.a = $$->rport.b = $$->rport.t = 0;
3902 | ARROW redirspec PORT portstar {
3903 $$ = calloc(1, sizeof(struct redirection));
3905 err(1, "redirection: calloc");
3911 hashkey : /* empty */
3913 $$ = calloc(1, sizeof(struct pf_poolhashkey));
3915 err(1, "hashkey: calloc");
3916 $$->key32[0] = arc4random();
3917 $$->key32[1] = arc4random();
3918 $$->key32[2] = arc4random();
3919 $$->key32[3] = arc4random();
3923 if (!strncmp($1, "0x", 2)) {
3924 if (strlen($1) != 34) {
3926 yyerror("hex key must be 128 bits "
3927 "(32 hex digits) long");
3930 $$ = calloc(1, sizeof(struct pf_poolhashkey));
3932 err(1, "hashkey: calloc");
3934 if (sscanf($1, "0x%8x%8x%8x%8x",
3935 &$$->key32[0], &$$->key32[1],
3936 &$$->key32[2], &$$->key32[3]) != 4) {
3939 yyerror("invalid hex key");
3945 $$ = calloc(1, sizeof(struct pf_poolhashkey));
3947 err(1, "hashkey: calloc");
3949 MD5Update(&context, (unsigned char *)$1,
3951 MD5Final((unsigned char *)$$, &context);
3952 HTONL($$->key32[0]);
3953 HTONL($$->key32[1]);
3954 HTONL($$->key32[2]);
3955 HTONL($$->key32[3]);
3961 pool_opts : { bzero(&pool_opts, sizeof pool_opts); }
3965 bzero(&pool_opts, sizeof pool_opts);
3970 pool_opts_l : pool_opts_l pool_opt
3974 pool_opt : BITMASK {
3975 if (pool_opts.type) {
3976 yyerror("pool type cannot be redefined");
3979 pool_opts.type = PF_POOL_BITMASK;
3982 if (pool_opts.type) {
3983 yyerror("pool type cannot be redefined");
3986 pool_opts.type = PF_POOL_RANDOM;
3988 | SOURCEHASH hashkey {
3989 if (pool_opts.type) {
3990 yyerror("pool type cannot be redefined");
3993 pool_opts.type = PF_POOL_SRCHASH;
3997 if (pool_opts.type) {
3998 yyerror("pool type cannot be redefined");
4001 pool_opts.type = PF_POOL_ROUNDROBIN;
4004 if (pool_opts.staticport) {
4005 yyerror("static-port cannot be redefined");
4008 pool_opts.staticport = 1;
4011 if (filter_opts.marker & POM_STICKYADDRESS) {
4012 yyerror("sticky-address cannot be redefined");
4015 pool_opts.marker |= POM_STICKYADDRESS;
4016 pool_opts.opts |= PF_POOL_STICKYADDR;
4020 redirection : /* empty */ { $$ = NULL; }
4022 $$ = calloc(1, sizeof(struct redirection));
4024 err(1, "redirection: calloc");
4026 $$->rport.a = $$->rport.b = $$->rport.t = 0;
4028 | ARROW host PORT portstar {
4029 $$ = calloc(1, sizeof(struct redirection));
4031 err(1, "redirection: calloc");
4037 natpasslog : /* empty */ { $$.b1 = $$.b2 = 0; $$.w2 = 0; }
4038 | PASS { $$.b1 = 1; $$.b2 = 0; $$.w2 = 0; }
4039 | PASS log { $$.b1 = 1; $$.b2 = $2.log; $$.w2 = $2.logif; }
4040 | log { $$.b1 = 0; $$.b2 = $1.log; $$.w2 = $1.logif; }
4043 nataction : no NAT natpasslog {
4045 yyerror("\"pass\" not valid with \"no\"");
4056 | no RDR natpasslog {
4058 yyerror("\"pass\" not valid with \"no\"");
4071 natrule : nataction interface af proto fromto tag tagged rtable
4076 if (check_rulestate(PFCTL_STATE_NAT))
4079 memset(&r, 0, sizeof(r));
4088 if ($5.src.host && $5.src.host->af &&
4089 !$5.src.host->ifindex)
4090 r.af = $5.src.host->af;
4091 else if ($5.dst.host && $5.dst.host->af &&
4092 !$5.dst.host->ifindex)
4093 r.af = $5.dst.host->af;
4097 if (strlcpy(r.tagname, $6, PF_TAG_NAME_SIZE) >=
4099 yyerror("tag too long, max %u chars",
4100 PF_TAG_NAME_SIZE - 1);
4105 if (strlcpy(r.match_tagname, $7.name,
4106 PF_TAG_NAME_SIZE) >= PF_TAG_NAME_SIZE) {
4107 yyerror("tag too long, max %u chars",
4108 PF_TAG_NAME_SIZE - 1);
4111 r.match_tag_not = $7.neg;
4114 if (r.action == PF_NONAT || r.action == PF_NORDR) {
4116 yyerror("translation rule with 'no' "
4117 "does not need '->'");
4121 if ($9 == NULL || $9->host == NULL) {
4122 yyerror("translation rule requires '-> "
4126 if (!r.af && ! $9->host->ifindex)
4127 r.af = $9->host->af;
4129 remove_invalid_hosts(&$9->host, &r.af);
4130 if (invalid_redirect($9->host, r.af))
4132 if (check_netmask($9->host, r.af))
4135 r.rpool.proxy_port[0] = ntohs($9->rport.a);
4139 if (!$9->rport.b && $9->rport.t &&
4140 $5.dst.port != NULL) {
4141 r.rpool.proxy_port[1] =
4142 ntohs($9->rport.a) +
4144 $5.dst.port->port[1]) -
4146 $5.dst.port->port[0]));
4148 r.rpool.proxy_port[1] =
4152 r.rpool.proxy_port[1] =
4154 if (!r.rpool.proxy_port[0] &&
4155 !r.rpool.proxy_port[1]) {
4156 r.rpool.proxy_port[0] =
4157 PF_NAT_PROXY_PORT_LOW;
4158 r.rpool.proxy_port[1] =
4159 PF_NAT_PROXY_PORT_HIGH;
4160 } else if (!r.rpool.proxy_port[1])
4161 r.rpool.proxy_port[1] =
4162 r.rpool.proxy_port[0];
4168 r.rpool.opts = $10.type;
4169 if ((r.rpool.opts & PF_POOL_TYPEMASK) ==
4170 PF_POOL_NONE && ($9->host->next != NULL ||
4171 $9->host->addr.type == PF_ADDR_TABLE ||
4172 DYNIF_MULTIADDR($9->host->addr)))
4173 r.rpool.opts = PF_POOL_ROUNDROBIN;
4174 if ((r.rpool.opts & PF_POOL_TYPEMASK) !=
4175 PF_POOL_ROUNDROBIN &&
4176 disallow_table($9->host, "tables are only "
4177 "supported in round-robin redirection "
4180 if ((r.rpool.opts & PF_POOL_TYPEMASK) !=
4181 PF_POOL_ROUNDROBIN &&
4182 disallow_alias($9->host, "interface (%s) "
4183 "is only supported in round-robin "
4184 "redirection pools"))
4186 if ($9->host->next != NULL) {
4187 if ((r.rpool.opts & PF_POOL_TYPEMASK) !=
4188 PF_POOL_ROUNDROBIN) {
4189 yyerror("only round-robin "
4190 "valid for multiple "
4191 "redirection addresses");
4197 if ($10.key != NULL)
4198 memcpy(&r.rpool.key, $10.key,
4199 sizeof(struct pf_poolhashkey));
4202 r.rpool.opts |= $10.opts;
4204 if ($10.staticport) {
4205 if (r.action != PF_NAT) {
4206 yyerror("the 'static-port' option is "
4207 "only valid with nat rules");
4210 if (r.rpool.proxy_port[0] !=
4211 PF_NAT_PROXY_PORT_LOW &&
4212 r.rpool.proxy_port[1] !=
4213 PF_NAT_PROXY_PORT_HIGH) {
4214 yyerror("the 'static-port' option can't"
4215 " be used when specifying a port"
4219 r.rpool.proxy_port[0] = 0;
4220 r.rpool.proxy_port[1] = 0;
4223 expand_rule(&r, $2, $9 == NULL ? NULL : $9->host, $4,
4224 $5.src_os, $5.src.host, $5.src.port, $5.dst.host,
4225 $5.dst.port, 0, 0, 0, "");
4230 binatrule : no BINAT natpasslog interface af proto FROM ipspec toipspec tag
4231 tagged rtable redirection
4233 struct pf_rule binat;
4234 struct pf_pooladdr *pa;
4236 if (check_rulestate(PFCTL_STATE_NAT))
4238 if (disallow_urpf_failed($9, "\"urpf-failed\" is not "
4239 "permitted as a binat destination"))
4242 memset(&binat, 0, sizeof(binat));
4245 yyerror("\"pass\" not valid with \"no\"");
4249 binat.action = PF_NOBINAT;
4251 binat.action = PF_BINAT;
4252 binat.natpass = $3.b1;
4254 binat.logif = $3.w2;
4256 if (!binat.af && $8 != NULL && $8->af)
4258 if (!binat.af && $9 != NULL && $9->af)
4261 if (!binat.af && $13 != NULL && $13->host)
4262 binat.af = $13->host->af;
4264 yyerror("address family (inet/inet6) "
4270 memcpy(binat.ifname, $4->ifname,
4271 sizeof(binat.ifname));
4272 binat.ifnot = $4->not;
4277 if (strlcpy(binat.tagname, $10,
4278 PF_TAG_NAME_SIZE) >= PF_TAG_NAME_SIZE) {
4279 yyerror("tag too long, max %u chars",
4280 PF_TAG_NAME_SIZE - 1);
4284 if (strlcpy(binat.match_tagname, $11.name,
4285 PF_TAG_NAME_SIZE) >= PF_TAG_NAME_SIZE) {
4286 yyerror("tag too long, max %u chars",
4287 PF_TAG_NAME_SIZE - 1);
4290 binat.match_tag_not = $11.neg;
4291 binat.rtableid = $12;
4294 binat.proto = $6->proto;
4298 if ($8 != NULL && disallow_table($8, "invalid use of "
4299 "table <%s> as the source address of a binat rule"))
4301 if ($8 != NULL && disallow_alias($8, "invalid use of "
4302 "interface (%s) as the source address of a binat "
4305 if ($13 != NULL && $13->host != NULL && disallow_table(
4306 $13->host, "invalid use of table <%s> as the "
4307 "redirect address of a binat rule"))
4309 if ($13 != NULL && $13->host != NULL && disallow_alias(
4310 $13->host, "invalid use of interface (%s) as the "
4311 "redirect address of a binat rule"))
4316 yyerror("multiple binat ip addresses");
4319 if ($8->addr.type == PF_ADDR_DYNIFTL)
4321 if ($8->af != binat.af) {
4322 yyerror("binat ip versions must match");
4325 if (check_netmask($8, binat.af))
4327 memcpy(&binat.src.addr, &$8->addr,
4328 sizeof(binat.src.addr));
4333 yyerror("multiple binat ip addresses");
4336 if ($9->af != binat.af && $9->af) {
4337 yyerror("binat ip versions must match");
4340 if (check_netmask($9, binat.af))
4342 memcpy(&binat.dst.addr, &$9->addr,
4343 sizeof(binat.dst.addr));
4344 binat.dst.neg = $9->not;
4348 if (binat.action == PF_NOBINAT) {
4350 yyerror("'no binat' rule does not need"
4355 if ($13 == NULL || $13->host == NULL) {
4356 yyerror("'binat' rule requires"
4361 remove_invalid_hosts(&$13->host, &binat.af);
4362 if (invalid_redirect($13->host, binat.af))
4364 if ($13->host->next != NULL) {
4365 yyerror("binat rule must redirect to "
4366 "a single address");
4369 if (check_netmask($13->host, binat.af))
4372 if (!PF_AZERO(&binat.src.addr.v.a.mask,
4374 !PF_AEQ(&binat.src.addr.v.a.mask,
4375 &$13->host->addr.v.a.mask, binat.af)) {
4376 yyerror("'binat' source mask and "
4377 "redirect mask must be the same");
4381 TAILQ_INIT(&binat.rpool.list);
4382 pa = calloc(1, sizeof(struct pf_pooladdr));
4384 err(1, "binat: calloc");
4385 pa->addr = $13->host->addr;
4387 TAILQ_INSERT_TAIL(&binat.rpool.list,
4393 pfctl_add_rule(pf, &binat, "");
4397 tag : /* empty */ { $$ = NULL; }
4398 | TAG STRING { $$ = $2; }
4401 tagged : /* empty */ { $$.neg = 0; $$.name = NULL; }
4402 | not TAGGED string { $$.neg = $1; $$.name = $3; }
4405 rtable : /* empty */ { $$ = -1; }
4407 if ($2 < 0 || $2 > rt_tableid_max()) {
4408 yyerror("invalid rtable id");
4415 route_host : STRING {
4416 $$ = calloc(1, sizeof(struct node_host));
4418 err(1, "route_host: calloc");
4419 $$->ifname = strdup($1);
4420 set_ipmask($$, 128);
4424 | '(' STRING host ')' {
4425 struct node_host *n;
4428 for (n = $3; n != NULL; n = n->next)
4429 n->ifname = strdup($2);
4433 route_host_list : route_host optnl { $$ = $1; }
4434 | route_host_list comma route_host optnl {
4437 if ($1->af != $3->af) {
4438 yyerror("all pool addresses must be in the "
4439 "same address family");
4442 $1->tail->next = $3;
4443 $1->tail = $3->tail;
4448 routespec : route_host { $$ = $1; }
4449 | '{' optnl route_host_list '}' { $$ = $3; }
4452 route : /* empty */ {
4458 /* backwards-compat */
4463 | ROUTETO routespec pool_opts {
4466 $$.pool_opts = $3.type | $3.opts;
4470 | REPLYTO routespec pool_opts {
4473 $$.pool_opts = $3.type | $3.opts;
4477 | DUPTO routespec pool_opts {
4480 $$.pool_opts = $3.type | $3.opts;
4486 timeout_spec : STRING NUMBER
4488 if (check_rulestate(PFCTL_STATE_OPTION)) {
4492 if ($2 < 0 || $2 > UINT_MAX) {
4493 yyerror("only positive values permitted");
4496 if (pfctl_set_timeout(pf, $1, $2, 0) != 0) {
4497 yyerror("unknown timeout %s", $1);
4504 if (check_rulestate(PFCTL_STATE_OPTION))
4506 if ($2 < 0 || $2 > UINT_MAX) {
4507 yyerror("only positive values permitted");
4510 if (pfctl_set_timeout(pf, "interval", $2, 0) != 0)
4515 timeout_list : timeout_list comma timeout_spec optnl
4516 | timeout_spec optnl
4519 limit_spec : STRING NUMBER
4521 if (check_rulestate(PFCTL_STATE_OPTION)) {
4525 if ($2 < 0 || $2 > UINT_MAX) {
4526 yyerror("only positive values permitted");
4529 if (pfctl_set_limit(pf, $1, $2) != 0) {
4530 yyerror("unable to set limit %s %u", $1, $2);
4538 limit_list : limit_list comma limit_spec optnl
4546 yesno : NO { $$ = 0; }
4548 if (!strcmp($1, "yes"))
4551 yyerror("invalid value '%s', expected 'yes' "
4560 unaryop : '=' { $$ = PF_OP_EQ; }
4561 | '!' '=' { $$ = PF_OP_NE; }
4562 | '<' '=' { $$ = PF_OP_LE; }
4563 | '<' { $$ = PF_OP_LT; }
4564 | '>' '=' { $$ = PF_OP_GE; }
4565 | '>' { $$ = PF_OP_GT; }
4571 yyerror(const char *fmt, ...)
4577 fprintf(stderr, "%s:%d: ", file->name, yylval.lineno);
4578 vfprintf(stderr, fmt, ap);
4579 fprintf(stderr, "\n");
4585 disallow_table(struct node_host *h, const char *fmt)
4587 for (; h != NULL; h = h->next)
4588 if (h->addr.type == PF_ADDR_TABLE) {
4589 yyerror(fmt, h->addr.v.tblname);
4596 disallow_urpf_failed(struct node_host *h, const char *fmt)
4598 for (; h != NULL; h = h->next)
4599 if (h->addr.type == PF_ADDR_URPFFAILED) {
4607 disallow_alias(struct node_host *h, const char *fmt)
4609 for (; h != NULL; h = h->next)
4610 if (DYNIF_MULTIADDR(h->addr)) {
4611 yyerror(fmt, h->addr.v.tblname);
4618 rule_consistent(struct pf_rule *r, int anchor_call)
4622 switch (r->action) {
4627 problems = filter_consistent(r, anchor_call);
4631 problems = nat_consistent(r);
4635 problems = rdr_consistent(r);
4646 filter_consistent(struct pf_rule *r, int anchor_call)
4650 if (r->proto != IPPROTO_TCP && r->proto != IPPROTO_UDP &&
4651 (r->src.port_op || r->dst.port_op)) {
4652 yyerror("port only applies to tcp/udp");
4655 if (r->proto != IPPROTO_ICMP && r->proto != IPPROTO_ICMPV6 &&
4656 (r->type || r->code)) {
4657 yyerror("icmp-type/code only applies to icmp");
4660 if (!r->af && (r->type || r->code)) {
4661 yyerror("must indicate address family with icmp-type/code");
4664 if (r->overload_tblname[0] &&
4665 r->max_src_conn == 0 && r->max_src_conn_rate.seconds == 0) {
4666 yyerror("'overload' requires 'max-src-conn' "
4667 "or 'max-src-conn-rate'");
4670 if ((r->proto == IPPROTO_ICMP && r->af == AF_INET6) ||
4671 (r->proto == IPPROTO_ICMPV6 && r->af == AF_INET)) {
4672 yyerror("proto %s doesn't match address family %s",
4673 r->proto == IPPROTO_ICMP ? "icmp" : "icmp6",
4674 r->af == AF_INET ? "inet" : "inet6");
4677 if (r->allow_opts && r->action != PF_PASS) {
4678 yyerror("allow-opts can only be specified for pass rules");
4681 if (r->rule_flag & PFRULE_FRAGMENT && (r->src.port_op ||
4682 r->dst.port_op || r->flagset || r->type || r->code)) {
4683 yyerror("fragments can be filtered only on IP header fields");
4686 if (r->rule_flag & PFRULE_RETURNRST && r->proto != IPPROTO_TCP) {
4687 yyerror("return-rst can only be applied to TCP rules");
4690 if (r->max_src_nodes && !(r->rule_flag & PFRULE_RULESRCTRACK)) {
4691 yyerror("max-src-nodes requires 'source-track rule'");
4694 if (r->action == PF_DROP && r->keep_state) {
4695 yyerror("keep state on block rules doesn't make sense");
4698 if (r->rule_flag & PFRULE_STATESLOPPY &&
4699 (r->keep_state == PF_STATE_MODULATE ||
4700 r->keep_state == PF_STATE_SYNPROXY)) {
4701 yyerror("sloppy state matching cannot be used with "
4702 "synproxy state or modulate state");
4709 nat_consistent(struct pf_rule *r)
4711 return (0); /* yeah! */
4715 rdr_consistent(struct pf_rule *r)
4719 if (r->proto != IPPROTO_TCP && r->proto != IPPROTO_UDP) {
4720 if (r->src.port_op) {
4721 yyerror("src port only applies to tcp/udp");
4724 if (r->dst.port_op) {
4725 yyerror("dst port only applies to tcp/udp");
4728 if (r->rpool.proxy_port[0]) {
4729 yyerror("rpool port only applies to tcp/udp");
4733 if (r->dst.port_op &&
4734 r->dst.port_op != PF_OP_EQ && r->dst.port_op != PF_OP_RRG) {
4735 yyerror("invalid port operator for rdr destination port");
4742 process_tabledef(char *name, struct table_opts *opts)
4744 struct pfr_buffer ab;
4745 struct node_tinit *ti;
4746 unsigned long maxcount;
4747 size_t s = sizeof(maxcount);
4749 bzero(&ab, sizeof(ab));
4750 ab.pfrb_type = PFRB_ADDRS;
4751 SIMPLEQ_FOREACH(ti, &opts->init_nodes, entries) {
4753 if (pfr_buf_load(&ab, ti->file, 0, append_addr)) {
4755 yyerror("cannot load \"%s\": %s",
4756 ti->file, strerror(errno));
4758 yyerror("file \"%s\" contains bad data",
4763 if (append_addr_host(&ab, ti->host, 0, 0)) {
4764 yyerror("cannot create address buffer: %s",
4769 if (pf->opts & PF_OPT_VERBOSE)
4770 print_tabledef(name, opts->flags, opts->init_addr,
4772 if (!(pf->opts & PF_OPT_NOACTION) &&
4773 pfctl_define_table(name, opts->flags, opts->init_addr,
4774 pf->anchor->name, &ab, pf->anchor->ruleset.tticket)) {
4776 if (sysctlbyname("net.pf.request_maxcount", &maxcount, &s,
4780 if (ab.pfrb_size > maxcount)
4781 yyerror("cannot define table %s: too many elements.\n"
4782 "Consider increasing net.pf.request_maxcount.",
4785 yyerror("cannot define table %s: %s", name,
4786 pfr_strerror(errno));
4803 /* macro gore, but you should've seen the prior indentation nightmare... */
4805 #define FREE_LIST(T,r) \
4808 while (node != NULL) { \
4810 node = node->next; \
4815 #define LOOP_THROUGH(T,n,r,C) \
4819 r = calloc(1, sizeof(T)); \
4821 err(1, "LOOP: calloc"); \
4825 while (n != NULL) { \
4834 expand_label_str(char *label, size_t len, const char *srch, const char *repl)
4839 if ((tmp = calloc(1, len)) == NULL)
4840 err(1, "expand_label_str: calloc");
4842 while ((q = strstr(p, srch)) != NULL) {
4844 if ((strlcat(tmp, p, len) >= len) ||
4845 (strlcat(tmp, repl, len) >= len))
4846 errx(1, "expand_label: label too long");
4850 if (strlcat(tmp, p, len) >= len)
4851 errx(1, "expand_label: label too long");
4852 strlcpy(label, tmp, len); /* always fits */
4857 expand_label_if(const char *name, char *label, size_t len, const char *ifname)
4859 if (strstr(label, name) != NULL) {
4861 expand_label_str(label, len, name, "any");
4863 expand_label_str(label, len, name, ifname);
4868 expand_label_addr(const char *name, char *label, size_t len, sa_family_t af,
4869 struct node_host *h)
4871 char tmp[64], tmp_not[66];
4873 if (strstr(label, name) != NULL) {
4874 switch (h->addr.type) {
4875 case PF_ADDR_DYNIFTL:
4876 snprintf(tmp, sizeof(tmp), "(%s)", h->addr.v.ifname);
4879 snprintf(tmp, sizeof(tmp), "<%s>", h->addr.v.tblname);
4881 case PF_ADDR_NOROUTE:
4882 snprintf(tmp, sizeof(tmp), "no-route");
4884 case PF_ADDR_URPFFAILED:
4885 snprintf(tmp, sizeof(tmp), "urpf-failed");
4887 case PF_ADDR_ADDRMASK:
4888 if (!af || (PF_AZERO(&h->addr.v.a.addr, af) &&
4889 PF_AZERO(&h->addr.v.a.mask, af)))
4890 snprintf(tmp, sizeof(tmp), "any");
4895 if (inet_ntop(af, &h->addr.v.a.addr, a,
4897 snprintf(tmp, sizeof(tmp), "?");
4899 bits = unmask(&h->addr.v.a.mask, af);
4900 if ((af == AF_INET && bits < 32) ||
4901 (af == AF_INET6 && bits < 128))
4902 snprintf(tmp, sizeof(tmp),
4905 snprintf(tmp, sizeof(tmp),
4911 snprintf(tmp, sizeof(tmp), "?");
4916 snprintf(tmp_not, sizeof(tmp_not), "! %s", tmp);
4917 expand_label_str(label, len, name, tmp_not);
4919 expand_label_str(label, len, name, tmp);
4924 expand_label_port(const char *name, char *label, size_t len,
4925 struct node_port *port)
4927 char a1[6], a2[6], op[13] = "";
4929 if (strstr(label, name) != NULL) {
4930 snprintf(a1, sizeof(a1), "%u", ntohs(port->port[0]));
4931 snprintf(a2, sizeof(a2), "%u", ntohs(port->port[1]));
4934 else if (port->op == PF_OP_IRG)
4935 snprintf(op, sizeof(op), "%s><%s", a1, a2);
4936 else if (port->op == PF_OP_XRG)
4937 snprintf(op, sizeof(op), "%s<>%s", a1, a2);
4938 else if (port->op == PF_OP_EQ)
4939 snprintf(op, sizeof(op), "%s", a1);
4940 else if (port->op == PF_OP_NE)
4941 snprintf(op, sizeof(op), "!=%s", a1);
4942 else if (port->op == PF_OP_LT)
4943 snprintf(op, sizeof(op), "<%s", a1);
4944 else if (port->op == PF_OP_LE)
4945 snprintf(op, sizeof(op), "<=%s", a1);
4946 else if (port->op == PF_OP_GT)
4947 snprintf(op, sizeof(op), ">%s", a1);
4948 else if (port->op == PF_OP_GE)
4949 snprintf(op, sizeof(op), ">=%s", a1);
4950 expand_label_str(label, len, name, op);
4955 expand_label_proto(const char *name, char *label, size_t len, u_int8_t proto)
4957 struct protoent *pe;
4960 if (strstr(label, name) != NULL) {
4961 pe = getprotobynumber(proto);
4963 expand_label_str(label, len, name, pe->p_name);
4965 snprintf(n, sizeof(n), "%u", proto);
4966 expand_label_str(label, len, name, n);
4972 expand_label_nr(const char *name, char *label, size_t len)
4976 if (strstr(label, name) != NULL) {
4977 snprintf(n, sizeof(n), "%u", pf->anchor->match);
4978 expand_label_str(label, len, name, n);
4983 expand_label(char *label, size_t len, const char *ifname, sa_family_t af,
4984 struct node_host *src_host, struct node_port *src_port,
4985 struct node_host *dst_host, struct node_port *dst_port,
4988 expand_label_if("$if", label, len, ifname);
4989 expand_label_addr("$srcaddr", label, len, af, src_host);
4990 expand_label_addr("$dstaddr", label, len, af, dst_host);
4991 expand_label_port("$srcport", label, len, src_port);
4992 expand_label_port("$dstport", label, len, dst_port);
4993 expand_label_proto("$proto", label, len, proto);
4994 expand_label_nr("$nr", label, len);
4998 expand_altq(struct pf_altq *a, struct node_if *interfaces,
4999 struct node_queue *nqueues, struct node_queue_bw bwspec,
5000 struct node_queue_opt *opts)
5002 struct pf_altq pa, pb;
5003 char qname[PF_QNAME_SIZE];
5004 struct node_queue *n;
5005 struct node_queue_bw bw;
5008 if ((pf->loadopt & PFCTL_FLAG_ALTQ) == 0) {
5009 FREE_LIST(struct node_if, interfaces);
5011 FREE_LIST(struct node_queue, nqueues);
5015 LOOP_THROUGH(struct node_if, interface, interfaces,
5016 memcpy(&pa, a, sizeof(struct pf_altq));
5017 if (strlcpy(pa.ifname, interface->ifname,
5018 sizeof(pa.ifname)) >= sizeof(pa.ifname))
5019 errx(1, "expand_altq: strlcpy");
5021 if (interface->not) {
5022 yyerror("altq on ! <interface> is not supported");
5025 if (eval_pfaltq(pf, &pa, &bwspec, opts))
5028 if (pfctl_add_altq(pf, &pa))
5031 if (pf->opts & PF_OPT_VERBOSE) {
5032 print_altq(&pf->paltq->altq, 0,
5034 if (nqueues && nqueues->tail) {
5036 LOOP_THROUGH(struct node_queue, queue,
5046 if (pa.scheduler == ALTQT_CBQ ||
5047 pa.scheduler == ALTQT_HFSC) {
5048 /* now create a root queue */
5049 memset(&pb, 0, sizeof(struct pf_altq));
5050 if (strlcpy(qname, "root_", sizeof(qname)) >=
5052 errx(1, "expand_altq: strlcpy");
5053 if (strlcat(qname, interface->ifname,
5054 sizeof(qname)) >= sizeof(qname))
5055 errx(1, "expand_altq: strlcat");
5056 if (strlcpy(pb.qname, qname,
5057 sizeof(pb.qname)) >= sizeof(pb.qname))
5058 errx(1, "expand_altq: strlcpy");
5059 if (strlcpy(pb.ifname, interface->ifname,
5060 sizeof(pb.ifname)) >= sizeof(pb.ifname))
5061 errx(1, "expand_altq: strlcpy");
5062 pb.qlimit = pa.qlimit;
5063 pb.scheduler = pa.scheduler;
5064 bw.bw_absolute = pa.ifbandwidth;
5066 if (eval_pfqueue(pf, &pb, &bw, opts))
5069 if (pfctl_add_altq(pf, &pb))
5073 LOOP_THROUGH(struct node_queue, queue, nqueues,
5074 n = calloc(1, sizeof(struct node_queue));
5076 err(1, "expand_altq: calloc");
5077 if (pa.scheduler == ALTQT_CBQ ||
5078 pa.scheduler == ALTQT_HFSC)
5079 if (strlcpy(n->parent, qname,
5080 sizeof(n->parent)) >=
5082 errx(1, "expand_altq: strlcpy");
5083 if (strlcpy(n->queue, queue->queue,
5084 sizeof(n->queue)) >= sizeof(n->queue))
5085 errx(1, "expand_altq: strlcpy");
5086 if (strlcpy(n->ifname, interface->ifname,
5087 sizeof(n->ifname)) >= sizeof(n->ifname))
5088 errx(1, "expand_altq: strlcpy");
5089 n->scheduler = pa.scheduler;
5095 queues->tail->next = n;
5101 FREE_LIST(struct node_if, interfaces);
5103 FREE_LIST(struct node_queue, nqueues);
5109 expand_queue(struct pf_altq *a, struct node_if *interfaces,
5110 struct node_queue *nqueues, struct node_queue_bw bwspec,
5111 struct node_queue_opt *opts)
5113 struct node_queue *n, *nq;
5118 if ((pf->loadopt & PFCTL_FLAG_ALTQ) == 0) {
5119 FREE_LIST(struct node_queue, nqueues);
5123 if (queues == NULL) {
5124 yyerror("queue %s has no parent", a->qname);
5125 FREE_LIST(struct node_queue, nqueues);
5129 LOOP_THROUGH(struct node_if, interface, interfaces,
5130 LOOP_THROUGH(struct node_queue, tqueue, queues,
5131 if (!strncmp(a->qname, tqueue->queue, PF_QNAME_SIZE) &&
5132 (interface->ifname[0] == 0 ||
5133 (!interface->not && !strncmp(interface->ifname,
5134 tqueue->ifname, IFNAMSIZ)) ||
5135 (interface->not && strncmp(interface->ifname,
5136 tqueue->ifname, IFNAMSIZ)))) {
5137 /* found ourself in queues */
5140 memcpy(&pa, a, sizeof(struct pf_altq));
5142 if (pa.scheduler != ALTQT_NONE &&
5143 pa.scheduler != tqueue->scheduler) {
5144 yyerror("exactly one scheduler type "
5145 "per interface allowed");
5148 pa.scheduler = tqueue->scheduler;
5150 /* scheduler dependent error checking */
5151 switch (pa.scheduler) {
5153 if (nqueues != NULL) {
5154 yyerror("priq queues cannot "
5155 "have child queues");
5158 if (bwspec.bw_absolute > 0 ||
5159 bwspec.bw_percent < 100) {
5160 yyerror("priq doesn't take "
5169 if (strlcpy(pa.ifname, tqueue->ifname,
5170 sizeof(pa.ifname)) >= sizeof(pa.ifname))
5171 errx(1, "expand_queue: strlcpy");
5172 if (strlcpy(pa.parent, tqueue->parent,
5173 sizeof(pa.parent)) >= sizeof(pa.parent))
5174 errx(1, "expand_queue: strlcpy");
5176 if (eval_pfqueue(pf, &pa, &bwspec, opts))
5179 if (pfctl_add_altq(pf, &pa))
5182 for (nq = nqueues; nq != NULL; nq = nq->next) {
5183 if (!strcmp(a->qname, nq->queue)) {
5184 yyerror("queue cannot have "
5190 sizeof(struct node_queue));
5192 err(1, "expand_queue: calloc");
5193 if (strlcpy(n->parent, a->qname,
5194 sizeof(n->parent)) >=
5196 errx(1, "expand_queue strlcpy");
5197 if (strlcpy(n->queue, nq->queue,
5198 sizeof(n->queue)) >=
5200 errx(1, "expand_queue strlcpy");
5201 if (strlcpy(n->ifname, tqueue->ifname,
5202 sizeof(n->ifname)) >=
5204 errx(1, "expand_queue strlcpy");
5205 n->scheduler = tqueue->scheduler;
5211 queues->tail->next = n;
5215 if ((pf->opts & PF_OPT_VERBOSE) && (
5216 (found == 1 && interface->ifname[0] == 0) ||
5217 (found > 0 && interface->ifname[0] != 0))) {
5218 print_queue(&pf->paltq->altq, 0,
5219 &bwspec, interface->ifname[0] != 0,
5221 if (nqueues && nqueues->tail) {
5223 LOOP_THROUGH(struct node_queue,
5236 FREE_LIST(struct node_queue, nqueues);
5237 FREE_LIST(struct node_if, interfaces);
5240 yyerror("queue %s has no parent", a->qname);
5251 expand_rule(struct pf_rule *r,
5252 struct node_if *interfaces, struct node_host *rpool_hosts,
5253 struct node_proto *protos, struct node_os *src_oses,
5254 struct node_host *src_hosts, struct node_port *src_ports,
5255 struct node_host *dst_hosts, struct node_port *dst_ports,
5256 struct node_uid *uids, struct node_gid *gids, struct node_icmp *icmp_types,
5257 const char *anchor_call)
5259 sa_family_t af = r->af;
5260 int added = 0, error = 0;
5261 char ifname[IF_NAMESIZE];
5262 char label[PF_RULE_LABEL_SIZE];
5263 char tagname[PF_TAG_NAME_SIZE];
5264 char match_tagname[PF_TAG_NAME_SIZE];
5265 struct pf_pooladdr *pa;
5266 struct node_host *h;
5267 u_int8_t flags, flagset, keep_state;
5269 if (strlcpy(label, r->label, sizeof(label)) >= sizeof(label))
5270 errx(1, "expand_rule: strlcpy");
5271 if (strlcpy(tagname, r->tagname, sizeof(tagname)) >= sizeof(tagname))
5272 errx(1, "expand_rule: strlcpy");
5273 if (strlcpy(match_tagname, r->match_tagname, sizeof(match_tagname)) >=
5274 sizeof(match_tagname))
5275 errx(1, "expand_rule: strlcpy");
5277 flagset = r->flagset;
5278 keep_state = r->keep_state;
5280 LOOP_THROUGH(struct node_if, interface, interfaces,
5281 LOOP_THROUGH(struct node_proto, proto, protos,
5282 LOOP_THROUGH(struct node_icmp, icmp_type, icmp_types,
5283 LOOP_THROUGH(struct node_host, src_host, src_hosts,
5284 LOOP_THROUGH(struct node_port, src_port, src_ports,
5285 LOOP_THROUGH(struct node_os, src_os, src_oses,
5286 LOOP_THROUGH(struct node_host, dst_host, dst_hosts,
5287 LOOP_THROUGH(struct node_port, dst_port, dst_ports,
5288 LOOP_THROUGH(struct node_uid, uid, uids,
5289 LOOP_THROUGH(struct node_gid, gid, gids,
5292 /* for link-local IPv6 address, interface must match up */
5293 if ((r->af && src_host->af && r->af != src_host->af) ||
5294 (r->af && dst_host->af && r->af != dst_host->af) ||
5295 (src_host->af && dst_host->af &&
5296 src_host->af != dst_host->af) ||
5297 (src_host->ifindex && dst_host->ifindex &&
5298 src_host->ifindex != dst_host->ifindex) ||
5299 (src_host->ifindex && *interface->ifname &&
5300 src_host->ifindex != if_nametoindex(interface->ifname)) ||
5301 (dst_host->ifindex && *interface->ifname &&
5302 dst_host->ifindex != if_nametoindex(interface->ifname)))
5304 if (!r->af && src_host->af)
5305 r->af = src_host->af;
5306 else if (!r->af && dst_host->af)
5307 r->af = dst_host->af;
5309 if (*interface->ifname)
5310 strlcpy(r->ifname, interface->ifname,
5312 else if (if_indextoname(src_host->ifindex, ifname))
5313 strlcpy(r->ifname, ifname, sizeof(r->ifname));
5314 else if (if_indextoname(dst_host->ifindex, ifname))
5315 strlcpy(r->ifname, ifname, sizeof(r->ifname));
5317 memset(r->ifname, '\0', sizeof(r->ifname));
5319 if (strlcpy(r->label, label, sizeof(r->label)) >=
5321 errx(1, "expand_rule: strlcpy");
5322 if (strlcpy(r->tagname, tagname, sizeof(r->tagname)) >=
5324 errx(1, "expand_rule: strlcpy");
5325 if (strlcpy(r->match_tagname, match_tagname,
5326 sizeof(r->match_tagname)) >= sizeof(r->match_tagname))
5327 errx(1, "expand_rule: strlcpy");
5328 expand_label(r->label, PF_RULE_LABEL_SIZE, r->ifname, r->af,
5329 src_host, src_port, dst_host, dst_port, proto->proto);
5330 expand_label(r->tagname, PF_TAG_NAME_SIZE, r->ifname, r->af,
5331 src_host, src_port, dst_host, dst_port, proto->proto);
5332 expand_label(r->match_tagname, PF_TAG_NAME_SIZE, r->ifname,
5333 r->af, src_host, src_port, dst_host, dst_port,
5336 error += check_netmask(src_host, r->af);
5337 error += check_netmask(dst_host, r->af);
5339 r->ifnot = interface->not;
5340 r->proto = proto->proto;
5341 r->src.addr = src_host->addr;
5342 r->src.neg = src_host->not;
5343 r->src.port[0] = src_port->port[0];
5344 r->src.port[1] = src_port->port[1];
5345 r->src.port_op = src_port->op;
5346 r->dst.addr = dst_host->addr;
5347 r->dst.neg = dst_host->not;
5348 r->dst.port[0] = dst_port->port[0];
5349 r->dst.port[1] = dst_port->port[1];
5350 r->dst.port_op = dst_port->op;
5351 r->uid.op = uid->op;
5352 r->uid.uid[0] = uid->uid[0];
5353 r->uid.uid[1] = uid->uid[1];
5354 r->gid.op = gid->op;
5355 r->gid.gid[0] = gid->gid[0];
5356 r->gid.gid[1] = gid->gid[1];
5357 r->type = icmp_type->type;
5358 r->code = icmp_type->code;
5360 if ((keep_state == PF_STATE_MODULATE ||
5361 keep_state == PF_STATE_SYNPROXY) &&
5362 r->proto && r->proto != IPPROTO_TCP)
5363 r->keep_state = PF_STATE_NORMAL;
5365 r->keep_state = keep_state;
5367 if (r->proto && r->proto != IPPROTO_TCP) {
5372 r->flagset = flagset;
5374 if (icmp_type->proto && r->proto != icmp_type->proto) {
5375 yyerror("icmp-type mismatch");
5379 if (src_os && src_os->os) {
5380 r->os_fingerprint = pfctl_get_fingerprint(src_os->os);
5381 if ((pf->opts & PF_OPT_VERBOSE2) &&
5382 r->os_fingerprint == PF_OSFP_NOMATCH)
5384 "warning: unknown '%s' OS fingerprint\n",
5387 r->os_fingerprint = PF_OSFP_ANY;
5390 TAILQ_INIT(&r->rpool.list);
5391 for (h = rpool_hosts; h != NULL; h = h->next) {
5392 pa = calloc(1, sizeof(struct pf_pooladdr));
5394 err(1, "expand_rule: calloc");
5396 if (h->ifname != NULL) {
5397 if (strlcpy(pa->ifname, h->ifname,
5398 sizeof(pa->ifname)) >=
5400 errx(1, "expand_rule: strlcpy");
5403 TAILQ_INSERT_TAIL(&r->rpool.list, pa, entries);
5406 if (rule_consistent(r, anchor_call[0]) < 0 || error)
5407 yyerror("skipping rule due to errors");
5409 r->nr = pf->astack[pf->asd]->match++;
5410 pfctl_add_rule(pf, r, anchor_call);
5416 FREE_LIST(struct node_if, interfaces);
5417 FREE_LIST(struct node_proto, protos);
5418 FREE_LIST(struct node_host, src_hosts);
5419 FREE_LIST(struct node_port, src_ports);
5420 FREE_LIST(struct node_os, src_oses);
5421 FREE_LIST(struct node_host, dst_hosts);
5422 FREE_LIST(struct node_port, dst_ports);
5423 FREE_LIST(struct node_uid, uids);
5424 FREE_LIST(struct node_gid, gids);
5425 FREE_LIST(struct node_icmp, icmp_types);
5426 FREE_LIST(struct node_host, rpool_hosts);
5429 yyerror("rule expands to no valid combination");
5433 expand_skip_interface(struct node_if *interfaces)
5437 if (!interfaces || (!interfaces->next && !interfaces->not &&
5438 !strcmp(interfaces->ifname, "none"))) {
5439 if (pf->opts & PF_OPT_VERBOSE)
5440 printf("set skip on none\n");
5441 errs = pfctl_set_interface_flags(pf, "", PFI_IFLAG_SKIP, 0);
5445 if (pf->opts & PF_OPT_VERBOSE)
5446 printf("set skip on {");
5447 LOOP_THROUGH(struct node_if, interface, interfaces,
5448 if (pf->opts & PF_OPT_VERBOSE)
5449 printf(" %s", interface->ifname);
5450 if (interface->not) {
5451 yyerror("skip on ! <interface> is not supported");
5454 errs += pfctl_set_interface_flags(pf,
5455 interface->ifname, PFI_IFLAG_SKIP, 1);
5457 if (pf->opts & PF_OPT_VERBOSE)
5460 FREE_LIST(struct node_if, interfaces);
5472 check_rulestate(int desired_state)
5474 if (require_order && (rulestate > desired_state)) {
5475 yyerror("Rules must be in order: options, normalization, "
5476 "queueing, translation, filtering");
5479 rulestate = desired_state;
5484 kw_cmp(const void *k, const void *e)
5486 return (strcmp(k, ((const struct keywords *)e)->k_name));
5492 /* this has to be sorted always */
5493 static const struct keywords keywords[] = {
5495 { "allow-opts", ALLOWOPTS},
5497 { "anchor", ANCHOR},
5498 { "antispoof", ANTISPOOF},
5500 { "bandwidth", BANDWIDTH},
5502 { "binat-anchor", BINATANCHOR},
5503 { "bitmask", BITMASK},
5505 { "block-policy", BLOCKPOLICY},
5506 { "buckets", BUCKETS},
5510 { "crop", FRAGCROP},
5512 { "divert-reply", DIVERTREPLY},
5513 { "divert-to", DIVERTTO},
5515 { "drop-ovl", FRAGDROP},
5517 { "fail-policy", FAILPOLICY},
5519 { "fastroute", FASTROUTE},
5520 { "file", FILENAME},
5521 { "fingerprints", FINGERPRINTS},
5523 { "floating", FLOATING},
5526 { "fragment", FRAGMENT},
5528 { "global", GLOBAL},
5532 { "hostid", HOSTID},
5533 { "icmp-type", ICMPTYPE},
5534 { "icmp6-type", ICMP6TYPE},
5535 { "if-bound", IFBOUND},
5537 { "include", INCLUDE},
5540 { "interval", INTERVAL},
5544 { "linkshare", LINKSHARE},
5547 { "loginterface", LOGINTERFACE},
5549 { "max-mss", MAXMSS},
5550 { "max-src-conn", MAXSRCCONN},
5551 { "max-src-conn-rate", MAXSRCCONNRATE},
5552 { "max-src-nodes", MAXSRCNODES},
5553 { "max-src-states", MAXSRCSTATES},
5554 { "min-ttl", MINTTL},
5555 { "modulate", MODULATE},
5557 { "nat-anchor", NATANCHOR},
5560 { "no-route", NOROUTE},
5561 { "no-sync", NOSYNC},
5563 { "optimization", OPTIMIZATION},
5566 { "overload", OVERLOAD},
5570 { "priority", PRIORITY},
5572 { "probability", PROBABILITY},
5574 { "qlimit", QLIMIT},
5577 { "random", RANDOM},
5578 { "random-id", RANDOMID},
5580 { "rdr-anchor", RDRANCHOR},
5581 { "realtime", REALTIME},
5582 { "reassemble", REASSEMBLE},
5583 { "reply-to", REPLYTO},
5584 { "require-order", REQUIREORDER},
5585 { "return", RETURN},
5586 { "return-icmp", RETURNICMP},
5587 { "return-icmp6", RETURNICMP6},
5588 { "return-rst", RETURNRST},
5589 { "round-robin", ROUNDROBIN},
5591 { "route-to", ROUTETO},
5592 { "rtable", RTABLE},
5594 { "ruleset-optimization", RULESET_OPTIMIZATION},
5597 { "set-tos", SETTOS},
5599 { "sloppy", SLOPPY},
5600 { "source-hash", SOURCEHASH},
5601 { "source-track", SOURCETRACK},
5603 { "state-defaults", STATEDEFAULTS},
5604 { "state-policy", STATEPOLICY},
5605 { "static-port", STATICPORT},
5606 { "sticky-address", STICKYADDRESS},
5607 { "synproxy", SYNPROXY},
5610 { "tagged", TAGGED},
5611 { "target", TARGET},
5612 { "tbrsize", TBRSIZE},
5613 { "timeout", TIMEOUT},
5617 { "upperlimit", UPPERLIMIT},
5618 { "urpf-failed", URPFFAILED},
5621 const struct keywords *p;
5623 p = bsearch(s, keywords, sizeof(keywords)/sizeof(keywords[0]),
5624 sizeof(keywords[0]), kw_cmp);
5628 fprintf(stderr, "%s: %d\n", s, p->k_val);
5632 fprintf(stderr, "string: %s\n", s);
5637 #define MAXPUSHBACK 128
5639 static char *parsebuf;
5640 static int parseindex;
5641 static char pushback_buffer[MAXPUSHBACK];
5642 static int pushback_index = 0;
5650 /* Read character from the parsebuffer instead of input. */
5651 if (parseindex >= 0) {
5652 c = parsebuf[parseindex++];
5661 return (pushback_buffer[--pushback_index]);
5664 if ((c = getc(file->stream)) == EOF) {
5665 yyerror("reached end of file while parsing quoted string");
5666 if (popfile() == EOF)
5673 while ((c = getc(file->stream)) == '\\') {
5674 next = getc(file->stream);
5679 yylval.lineno = file->lineno;
5684 if (popfile() == EOF)
5686 c = getc(file->stream);
5698 if (parseindex >= 0)
5701 if (pushback_index < MAXPUSHBACK-1)
5702 return (pushback_buffer[pushback_index++] = c);
5714 /* skip to either EOF or the first real EOL */
5717 c = pushback_buffer[--pushback_index];
5735 int quotec, next, c;
5740 while ((c = lgetc(0)) == ' ' || c == '\t')
5743 yylval.lineno = file->lineno;
5745 while ((c = lgetc(0)) != '\n' && c != EOF)
5747 if (c == '$' && parsebuf == NULL) {
5749 if ((c = lgetc(0)) == EOF)
5752 if (p + 1 >= buf + sizeof(buf) - 1) {
5753 yyerror("string too long");
5756 if (isalnum(c) || c == '_') {
5766 yyerror("macro '%s' not defined", buf);
5779 if ((c = lgetc(quotec)) == EOF)
5784 } else if (c == '\\') {
5785 if ((next = lgetc(quotec)) == EOF)
5787 if (next == quotec || c == ' ' || c == '\t')
5789 else if (next == '\n') {
5795 } else if (c == quotec) {
5799 if (p + 1 >= buf + sizeof(buf) - 1) {
5800 yyerror("string too long");
5805 yylval.v.string = strdup(buf);
5806 if (yylval.v.string == NULL)
5807 err(1, "yylex: strdup");
5812 yylval.v.i = PF_OP_XRG;
5813 return (PORTBINARY);
5820 yylval.v.i = PF_OP_IRG;
5821 return (PORTBINARY);
5833 #define allowed_to_end_number(x) \
5834 (isspace(x) || x == ')' || x ==',' || x == '/' || x == '}' || x == '=')
5836 if (c == '-' || isdigit(c)) {
5839 if ((unsigned)(p-buf) >= sizeof(buf)) {
5840 yyerror("string too long");
5843 } while ((c = lgetc(0)) != EOF && isdigit(c));
5845 if (p == buf + 1 && buf[0] == '-')
5847 if (c == EOF || allowed_to_end_number(c)) {
5848 const char *errstr = NULL;
5851 yylval.v.number = strtonum(buf, LLONG_MIN,
5852 LLONG_MAX, &errstr);
5854 yyerror("\"%s\" invalid number: %s",
5869 #define allowed_in_string(x) \
5870 (isalnum(x) || (ispunct(x) && x != '(' && x != ')' && \
5871 x != '{' && x != '}' && x != '<' && x != '>' && \
5872 x != '!' && x != '=' && x != '/' && x != '#' && \
5875 if (isalnum(c) || c == ':' || c == '_') {
5878 if ((unsigned)(p-buf) >= sizeof(buf)) {
5879 yyerror("string too long");
5882 } while ((c = lgetc(0)) != EOF && (allowed_in_string(c)));
5885 if ((token = lookup(buf)) == STRING)
5886 if ((yylval.v.string = strdup(buf)) == NULL)
5887 err(1, "yylex: strdup");
5891 yylval.lineno = file->lineno;
5900 check_file_secrecy(int fd, const char *fname)
5904 if (fstat(fd, &st)) {
5905 warn("cannot stat %s", fname);
5908 if (st.st_uid != 0 && st.st_uid != getuid()) {
5909 warnx("%s: owner not root or current user", fname);
5912 if (st.st_mode & (S_IRWXG | S_IRWXO)) {
5913 warnx("%s: group/world readable/writeable", fname);
5920 pushfile(const char *name, int secret)
5924 if ((nfile = calloc(1, sizeof(struct file))) == NULL ||
5925 (nfile->name = strdup(name)) == NULL) {
5929 if (TAILQ_FIRST(&files) == NULL && strcmp(nfile->name, "-") == 0) {
5930 nfile->stream = stdin;
5932 if ((nfile->name = strdup("stdin")) == NULL) {
5937 } else if ((nfile->stream = fopen(nfile->name, "r")) == NULL) {
5938 warn("%s", nfile->name);
5942 } else if (secret &&
5943 check_file_secrecy(fileno(nfile->stream), nfile->name)) {
5944 fclose(nfile->stream);
5950 TAILQ_INSERT_TAIL(&files, nfile, entry);
5959 if ((prev = TAILQ_PREV(file, files, entry)) != NULL) {
5960 prev->errors += file->errors;
5961 TAILQ_REMOVE(&files, file, entry);
5962 fclose(file->stream);
5972 parse_config(char *filename, struct pfctl *xpf)
5979 rulestate = PFCTL_STATE_NONE;
5980 returnicmpdefault = (ICMP_UNREACH << 8) | ICMP_UNREACH_PORT;
5981 returnicmp6default =
5982 (ICMP6_DST_UNREACH << 8) | ICMP6_DST_UNREACH_NOPORT;
5983 blockpolicy = PFRULE_DROP;
5984 failpolicy = PFRULE_DROP;
5987 if ((file = pushfile(filename, 0)) == NULL) {
5988 warn("cannot open the main config file!");
5993 errors = file->errors;
5996 /* Free macros and check which have not been used. */
5997 while ((sym = TAILQ_FIRST(&symhead))) {
5998 if ((pf->opts & PF_OPT_VERBOSE2) && !sym->used)
5999 fprintf(stderr, "warning: macro '%s' not "
6000 "used\n", sym->nam);
6003 TAILQ_REMOVE(&symhead, sym, entry);
6007 return (errors ? -1 : 0);
6011 symset(const char *nam, const char *val, int persist)
6015 for (sym = TAILQ_FIRST(&symhead); sym && strcmp(nam, sym->nam);
6016 sym = TAILQ_NEXT(sym, entry))
6020 if (sym->persist == 1)
6025 TAILQ_REMOVE(&symhead, sym, entry);
6029 if ((sym = calloc(1, sizeof(*sym))) == NULL)
6032 sym->nam = strdup(nam);
6033 if (sym->nam == NULL) {
6037 sym->val = strdup(val);
6038 if (sym->val == NULL) {
6044 sym->persist = persist;
6045 TAILQ_INSERT_TAIL(&symhead, sym, entry);
6050 pfctl_cmdline_symset(char *s)
6055 if ((val = strrchr(s, '=')) == NULL)
6058 if ((sym = malloc(strlen(s) - strlen(val) + 1)) == NULL)
6059 err(1, "pfctl_cmdline_symset: malloc");
6061 strlcpy(sym, s, strlen(s) - strlen(val) + 1);
6063 ret = symset(sym, val + 1, 1);
6070 symget(const char *nam)
6074 TAILQ_FOREACH(sym, &symhead, entry)
6075 if (strcmp(nam, sym->nam) == 0) {
6083 mv_rules(struct pf_ruleset *src, struct pf_ruleset *dst)
6088 for (i = 0; i < PF_RULESET_MAX; ++i) {
6089 while ((r = TAILQ_FIRST(src->rules[i].active.ptr))
6091 TAILQ_REMOVE(src->rules[i].active.ptr, r, entries);
6092 TAILQ_INSERT_TAIL(dst->rules[i].active.ptr, r, entries);
6093 dst->anchor->match++;
6095 src->anchor->match = 0;
6096 while ((r = TAILQ_FIRST(src->rules[i].inactive.ptr))
6098 TAILQ_REMOVE(src->rules[i].inactive.ptr, r, entries);
6099 TAILQ_INSERT_TAIL(dst->rules[i].inactive.ptr,
6106 decide_address_family(struct node_host *n, sa_family_t *af)
6108 if (*af != 0 || n == NULL)
6111 while ((n = n->next) != NULL) {
6120 remove_invalid_hosts(struct node_host **nh, sa_family_t *af)
6122 struct node_host *n = *nh, *prev = NULL;
6125 if (*af && n->af && n->af != *af) {
6126 /* unlink and free n */
6127 struct node_host *next = n->next;
6129 /* adjust tail pointer */
6130 if (n == (*nh)->tail)
6132 /* adjust previous node's next pointer */
6138 if (n->ifname != NULL)
6152 invalid_redirect(struct node_host *nh, sa_family_t af)
6155 struct node_host *n;
6157 /* tables and dyniftl are ok without an address family */
6158 for (n = nh; n != NULL; n = n->next) {
6159 if (n->addr.type != PF_ADDR_TABLE &&
6160 n->addr.type != PF_ADDR_DYNIFTL) {
6161 yyerror("address family not given and "
6162 "translation address expands to multiple "
6163 "address families");
6169 yyerror("no translation address with matching address family "
6177 atoul(char *s, u_long *ulvalp)
6183 ulval = strtoul(s, &ep, 0);
6184 if (s[0] == '\0' || *ep != '\0')
6186 if (errno == ERANGE && ulval == ULONG_MAX)
6198 if (atoul(n, &ulval) == 0) {
6199 if (ulval > 65535) {
6200 yyerror("illegal port value %lu", ulval);
6203 return (htons(ulval));
6205 s = getservbyname(n, "tcp");
6207 s = getservbyname(n, "udp");
6209 yyerror("unknown port %s", n);
6217 rule_label(struct pf_rule *r, char *s)
6220 if (strlcpy(r->label, s, sizeof(r->label)) >=
6222 yyerror("rule label too long (max %d chars)",
6223 sizeof(r->label)-1);
6231 parseicmpspec(char *w, sa_family_t af)
6233 const struct icmpcodeent *p;
6238 icmptype = returnicmpdefault >> 8;
6240 icmptype = returnicmp6default >> 8;
6242 if (atoul(w, &ulval) == -1) {
6243 if ((p = geticmpcodebyname(icmptype, w, af)) == NULL) {
6244 yyerror("unknown icmp code %s", w);
6250 yyerror("invalid icmp code %lu", ulval);
6253 return (icmptype << 8 | ulval);
6257 parseport(char *port, struct range *r, int extensions)
6259 char *p = strchr(port, ':');
6262 if ((r->a = getservice(port)) == -1)
6268 if ((extensions & PPORT_STAR) && !strcmp(p+1, "*")) {
6270 if ((r->a = getservice(port)) == -1)
6276 if ((extensions & PPORT_RANGE)) {
6278 if ((r->a = getservice(port)) == -1 ||
6279 (r->b = getservice(p)) == -1)
6292 pfctl_load_anchors(int dev, struct pfctl *pf, struct pfr_buffer *trans)
6294 struct loadanchors *la;
6296 TAILQ_FOREACH(la, &loadanchorshead, entries) {
6297 if (pf->opts & PF_OPT_VERBOSE)
6298 fprintf(stderr, "\nLoading anchor %s from %s\n",
6299 la->anchorname, la->filename);
6300 if (pfctl_rules(dev, la->filename, pf->opts, pf->optimize,
6301 la->anchorname, trans) == -1)
6309 kw_casecmp(const void *k, const void *e)
6311 return (strcasecmp(k, ((const struct keywords *)e)->k_name));
6315 map_tos(char *s, int *val)
6317 /* DiffServ Codepoints and other TOS mappings */
6318 const struct keywords toswords[] = {
6319 { "af11", IPTOS_DSCP_AF11 },
6320 { "af12", IPTOS_DSCP_AF12 },
6321 { "af13", IPTOS_DSCP_AF13 },
6322 { "af21", IPTOS_DSCP_AF21 },
6323 { "af22", IPTOS_DSCP_AF22 },
6324 { "af23", IPTOS_DSCP_AF23 },
6325 { "af31", IPTOS_DSCP_AF31 },
6326 { "af32", IPTOS_DSCP_AF32 },
6327 { "af33", IPTOS_DSCP_AF33 },
6328 { "af41", IPTOS_DSCP_AF41 },
6329 { "af42", IPTOS_DSCP_AF42 },
6330 { "af43", IPTOS_DSCP_AF43 },
6331 { "critical", IPTOS_PREC_CRITIC_ECP },
6332 { "cs0", IPTOS_DSCP_CS0 },
6333 { "cs1", IPTOS_DSCP_CS1 },
6334 { "cs2", IPTOS_DSCP_CS2 },
6335 { "cs3", IPTOS_DSCP_CS3 },
6336 { "cs4", IPTOS_DSCP_CS4 },
6337 { "cs5", IPTOS_DSCP_CS5 },
6338 { "cs6", IPTOS_DSCP_CS6 },
6339 { "cs7", IPTOS_DSCP_CS7 },
6340 { "ef", IPTOS_DSCP_EF },
6341 { "inetcontrol", IPTOS_PREC_INTERNETCONTROL },
6342 { "lowdelay", IPTOS_LOWDELAY },
6343 { "netcontrol", IPTOS_PREC_NETCONTROL },
6344 { "reliability", IPTOS_RELIABILITY },
6345 { "throughput", IPTOS_THROUGHPUT }
6347 const struct keywords *p;
6349 p = bsearch(s, toswords, sizeof(toswords)/sizeof(toswords[0]),
6350 sizeof(toswords[0]), kw_casecmp);
6360 rt_tableid_max(void)
6364 size_t l = sizeof(fibs);
6366 if (sysctlbyname("net.fibs", &fibs, &l, NULL, 0) == -1)
6367 fibs = 16; /* XXX RT_MAXFIBS, at least limit it some. */
6369 * As the OpenBSD code only compares > and not >= we need to adjust
6370 * here given we only accept values of 0..n and want to avoid #ifdefs
6375 return (RT_TABLEID_MAX);