1 /* $OpenBSD: parse.y,v 1.554 2008/10/17 12:59:53 henning Exp $ */
4 * Copyright (c) 2001 Markus Friedl. All rights reserved.
5 * Copyright (c) 2001 Daniel Hartmeier. All rights reserved.
6 * Copyright (c) 2001 Theo de Raadt. All rights reserved.
7 * Copyright (c) 2002,2003 Henning Brauer. All rights reserved.
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 * notice, this list of conditions and the following disclaimer in the
16 * documentation and/or other materials provided with the distribution.
18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
19 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
20 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
21 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
22 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
23 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
24 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
25 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
26 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
27 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30 #include <sys/cdefs.h>
31 __FBSDID("$FreeBSD$");
33 #include <sys/types.h>
34 #include <sys/socket.h>
37 #include <sys/sysctl.h>
40 #include <netinet/in.h>
41 #include <netinet/in_systm.h>
42 #include <netinet/ip.h>
43 #include <netinet/ip_icmp.h>
44 #include <netinet/icmp6.h>
45 #include <net/pfvar.h>
46 #include <arpa/inet.h>
47 #include <altq/altq.h>
48 #include <altq/altq_cbq.h>
49 #include <altq/altq_codel.h>
50 #include <altq/altq_priq.h>
51 #include <altq/altq_hfsc.h>
52 #include <altq/altq_fairq.h>
69 #include "pfctl_parser.h"
72 static struct pfctl *pf = NULL;
74 static int rulestate = 0;
75 static u_int16_t returnicmpdefault =
76 (ICMP_UNREACH << 8) | ICMP_UNREACH_PORT;
77 static u_int16_t returnicmp6default =
78 (ICMP6_DST_UNREACH << 8) | ICMP6_DST_UNREACH_NOPORT;
79 static int blockpolicy = PFRULE_DROP;
80 static int require_order = 1;
81 static int default_statelock;
83 TAILQ_HEAD(files, file) files = TAILQ_HEAD_INITIALIZER(files);
85 TAILQ_ENTRY(file) entry;
91 struct file *pushfile(const char *, int);
93 int check_file_secrecy(int, const char *);
96 int yyerror(const char *, ...);
97 int kw_cmp(const void *, const void *);
103 TAILQ_HEAD(symhead, sym) symhead = TAILQ_HEAD_INITIALIZER(symhead);
105 TAILQ_ENTRY(sym) entry;
111 int symset(const char *, const char *, int);
112 char *symget(const char *);
114 int atoul(char *, u_long *);
127 struct node_proto *next;
128 struct node_proto *tail;
134 struct node_port *next;
135 struct node_port *tail;
141 struct node_uid *next;
142 struct node_uid *tail;
148 struct node_gid *next;
149 struct node_gid *tail;
156 struct node_icmp *next;
157 struct node_icmp *tail;
160 enum { PF_STATE_OPT_MAX, PF_STATE_OPT_NOSYNC, PF_STATE_OPT_SRCTRACK,
161 PF_STATE_OPT_MAX_SRC_STATES, PF_STATE_OPT_MAX_SRC_CONN,
162 PF_STATE_OPT_MAX_SRC_CONN_RATE, PF_STATE_OPT_MAX_SRC_NODES,
163 PF_STATE_OPT_OVERLOAD, PF_STATE_OPT_STATELOCK,
164 PF_STATE_OPT_TIMEOUT, PF_STATE_OPT_SLOPPY, };
166 enum { PF_SRCTRACK_NONE, PF_SRCTRACK, PF_SRCTRACK_GLOBAL, PF_SRCTRACK_RULE };
168 struct node_state_opt {
171 u_int32_t max_states;
172 u_int32_t max_src_states;
173 u_int32_t max_src_conn;
180 char tblname[PF_TABLE_NAME_SIZE];
182 u_int32_t max_src_nodes;
190 struct node_state_opt *next;
191 struct node_state_opt *tail;
195 struct node_host *host;
196 struct node_port *port;
200 char queue[PF_QNAME_SIZE];
201 char parent[PF_QNAME_SIZE];
202 char ifname[IFNAMSIZ];
204 struct node_queue *next;
205 struct node_queue *tail;
208 struct node_qassign {
215 #define FOM_FLAGS 0x01
216 #define FOM_ICMP 0x02
218 #define FOM_KEEP 0x08
219 #define FOM_SRCTRACK 0x10
220 struct node_uid *uid;
221 struct node_gid *gid;
228 struct node_icmp *icmpspec;
233 struct node_state_opt *options;
238 struct node_qassign queues;
241 u_int8_t match_tag_not;
244 struct node_host *addr;
249 struct antispoof_opts {
256 #define SOM_MINTTL 0x01
257 #define SOM_MAXMSS 0x02
258 #define SOM_FRAGCACHE 0x04
259 #define SOM_SETTOS 0x08
268 u_int8_t match_tag_not;
274 #define QOM_BWSPEC 0x01
275 #define QOM_SCHEDULER 0x02
276 #define QOM_PRIORITY 0x04
277 #define QOM_TBRSIZE 0x08
278 #define QOM_QLIMIT 0x10
279 struct node_queue_bw queue_bwspec;
280 struct node_queue_opt scheduler;
289 struct node_tinithead init_nodes;
294 #define POM_TYPE 0x01
295 #define POM_STICKYADDRESS 0x02
299 struct pf_poolhashkey *key;
303 struct codel_opts codel_opts;
304 struct node_hfsc_opts hfsc_opts;
305 struct node_fairq_opts fairq_opts;
306 struct node_state_opt *keep_state_defaults = NULL;
308 int disallow_table(struct node_host *, const char *);
309 int disallow_urpf_failed(struct node_host *, const char *);
310 int disallow_alias(struct node_host *, const char *);
311 int rule_consistent(struct pf_rule *, int);
312 int filter_consistent(struct pf_rule *, int);
313 int nat_consistent(struct pf_rule *);
314 int rdr_consistent(struct pf_rule *);
315 int process_tabledef(char *, struct table_opts *);
316 void expand_label_str(char *, size_t, const char *, const char *);
317 void expand_label_if(const char *, char *, size_t, const char *);
318 void expand_label_addr(const char *, char *, size_t, u_int8_t,
320 void expand_label_port(const char *, char *, size_t,
322 void expand_label_proto(const char *, char *, size_t, u_int8_t);
323 void expand_label_nr(const char *, char *, size_t);
324 void expand_label(char *, size_t, const char *, u_int8_t,
325 struct node_host *, struct node_port *, struct node_host *,
326 struct node_port *, u_int8_t);
327 void expand_rule(struct pf_rule *, struct node_if *,
328 struct node_host *, struct node_proto *, struct node_os *,
329 struct node_host *, struct node_port *, struct node_host *,
330 struct node_port *, struct node_uid *, struct node_gid *,
331 struct node_icmp *, const char *);
332 int expand_altq(struct pf_altq *, struct node_if *,
333 struct node_queue *, struct node_queue_bw bwspec,
334 struct node_queue_opt *);
335 int expand_queue(struct pf_altq *, struct node_if *,
336 struct node_queue *, struct node_queue_bw,
337 struct node_queue_opt *);
338 int expand_skip_interface(struct node_if *);
340 int check_rulestate(int);
341 int getservice(char *);
342 int rule_label(struct pf_rule *, char *);
343 int rt_tableid_max(void);
345 void mv_rules(struct pf_ruleset *, struct pf_ruleset *);
346 void decide_address_family(struct node_host *, sa_family_t *);
347 void remove_invalid_hosts(struct node_host **, sa_family_t *);
348 int invalid_redirect(struct node_host *, sa_family_t);
349 u_int16_t parseicmpspec(char *, sa_family_t);
351 TAILQ_HEAD(loadanchorshead, loadanchors)
352 loadanchorshead = TAILQ_HEAD_INITIALIZER(loadanchorshead);
355 TAILQ_ENTRY(loadanchors) entries;
378 struct node_if *interface;
379 struct node_proto *proto;
380 struct node_icmp *icmp;
381 struct node_host *host;
383 struct node_port *port;
384 struct node_uid *uid;
385 struct node_gid *gid;
386 struct node_state_opt *state_opt;
389 struct peer src, dst;
390 struct node_os *src_os;
393 struct node_host *host;
397 struct pf_poolhashkey *key;
400 struct node_host *host;
405 struct node_state_opt *options;
416 struct pf_poolhashkey *hashkey;
417 struct node_queue *queue;
418 struct node_queue_opt queue_options;
419 struct node_queue_bw queue_bwspec;
420 struct node_qassign qassign;
421 struct filter_opts filter_opts;
422 struct antispoof_opts antispoof_opts;
423 struct queue_opts queue_opts;
424 struct scrub_opts scrub_opts;
425 struct table_opts table_opts;
426 struct pool_opts pool_opts;
427 struct node_hfsc_opts hfsc_opts;
428 struct node_fairq_opts fairq_opts;
429 struct codel_opts codel_opts;
434 #define PPORT_RANGE 1
436 int parseport(char *, struct range *r, int);
438 #define DYNIF_MULTIADDR(addr) ((addr).type == PF_ADDR_DYNIFTL && \
439 (!((addr).iflags & PFI_AFLAG_NOALIAS) || \
440 !isdigit((addr).v.ifname[strlen((addr).v.ifname)-1])))
444 %token PASS BLOCK SCRUB RETURN IN OS OUT LOG QUICK ON FROM TO FLAGS
445 %token RETURNRST RETURNICMP RETURNICMP6 PROTO INET INET6 ALL ANY ICMPTYPE
446 %token ICMP6TYPE CODE KEEP MODULATE STATE PORT RDR NAT BINAT ARROW NODF
447 %token MINTTL ERROR ALLOWOPTS FASTROUTE FILENAME ROUTETO DUPTO REPLYTO NO LABEL
448 %token NOROUTE URPFFAILED FRAGMENT USER GROUP MAXMSS MAXIMUM TTL TOS DROP TABLE
449 %token REASSEMBLE FRAGDROP FRAGCROP ANCHOR NATANCHOR RDRANCHOR BINATANCHOR
450 %token SET OPTIMIZATION TIMEOUT LIMIT LOGINTERFACE BLOCKPOLICY RANDOMID
451 %token REQUIREORDER SYNPROXY FINGERPRINTS NOSYNC DEBUG SKIP HOSTID
452 %token ANTISPOOF FOR INCLUDE
453 %token BITMASK RANDOM SOURCEHASH ROUNDROBIN STATICPORT PROBABILITY
454 %token ALTQ CBQ CODEL PRIQ HFSC FAIRQ BANDWIDTH TBRSIZE LINKSHARE REALTIME
455 %token UPPERLIMIT QUEUE PRIORITY QLIMIT HOGS BUCKETS RTABLE TARGET INTERVAL
456 %token LOAD RULESET_OPTIMIZATION
457 %token STICKYADDRESS MAXSRCSTATES MAXSRCNODES SOURCETRACK GLOBAL RULE
458 %token MAXSRCCONN MAXSRCCONNRATE OVERLOAD FLUSH SLOPPY
459 %token TAGGED TAG IFBOUND FLOATING STATEPOLICY STATEDEFAULTS ROUTE SETTOS
460 %token DIVERTTO DIVERTREPLY
461 %token <v.string> STRING
462 %token <v.number> NUMBER
463 %token <v.i> PORTBINARY
464 %type <v.interface> interface if_list if_item_not if_item
465 %type <v.number> number icmptype icmp6type uid gid
466 %type <v.number> tos not yesno
467 %type <v.probability> probability
468 %type <v.i> no dir af fragcache optimizer
469 %type <v.i> sourcetrack flush unaryop statelock
470 %type <v.b> action nataction natpasslog scrubaction
471 %type <v.b> flags flag blockspec
472 %type <v.range> portplain portstar portrange
473 %type <v.hashkey> hashkey
474 %type <v.proto> proto proto_list proto_item
475 %type <v.number> protoval
476 %type <v.icmp> icmpspec
477 %type <v.icmp> icmp_list icmp_item
478 %type <v.icmp> icmp6_list icmp6_item
479 %type <v.number> reticmpspec reticmp6spec
480 %type <v.fromto> fromto
481 %type <v.peer> ipportspec from to
482 %type <v.host> ipspec toipspec xhost host dynaddr host_list
483 %type <v.host> redir_host_list redirspec
484 %type <v.host> route_host route_host_list routespec
485 %type <v.os> os xos os_list
486 %type <v.port> portspec port_list port_item
487 %type <v.uid> uids uid_list uid_item
488 %type <v.gid> gids gid_list gid_item
489 %type <v.route> route
490 %type <v.redirection> redirection redirpool
491 %type <v.string> label stringall tag anchorname
492 %type <v.string> string varstring numberstring
493 %type <v.keep_state> keep
494 %type <v.state_opt> state_opt_spec state_opt_list state_opt_item
495 %type <v.logquick> logquick quick log logopts logopt
496 %type <v.interface> antispoof_ifspc antispoof_iflst antispoof_if
497 %type <v.qassign> qname
498 %type <v.queue> qassign qassign_list qassign_item
499 %type <v.queue_options> scheduler
500 %type <v.number> cbqflags_list cbqflags_item
501 %type <v.number> priqflags_list priqflags_item
502 %type <v.hfsc_opts> hfscopts_list hfscopts_item hfsc_opts
503 %type <v.fairq_opts> fairqopts_list fairqopts_item fairq_opts
504 %type <v.codel_opts> codelopts_list codelopts_item codel_opts
505 %type <v.queue_bwspec> bandwidth
506 %type <v.filter_opts> filter_opts filter_opt filter_opts_l
507 %type <v.antispoof_opts> antispoof_opts antispoof_opt antispoof_opts_l
508 %type <v.queue_opts> queue_opts queue_opt queue_opts_l
509 %type <v.scrub_opts> scrub_opts scrub_opt scrub_opts_l
510 %type <v.table_opts> table_opts table_opt table_opts_l
511 %type <v.pool_opts> pool_opts pool_opt pool_opts_l
512 %type <v.tagged> tagged
513 %type <v.rtableid> rtable
516 ruleset : /* empty */
517 | ruleset include '\n'
519 | ruleset option '\n'
520 | ruleset scrubrule '\n'
521 | ruleset natrule '\n'
522 | ruleset binatrule '\n'
523 | ruleset pfrule '\n'
524 | ruleset anchorrule '\n'
525 | ruleset loadrule '\n'
526 | ruleset altqif '\n'
527 | ruleset queuespec '\n'
528 | ruleset varset '\n'
529 | ruleset antispoof '\n'
530 | ruleset tabledef '\n'
531 | '{' fakeanchor '}' '\n';
532 | ruleset error '\n' { file->errors++; }
535 include : INCLUDE STRING {
538 if ((nfile = pushfile($2, 0)) == NULL) {
539 yyerror("failed to include file %s", $2);
551 * apply to previouslys specified rule: must be careful to note
552 * what that is: pf or nat or binat or rdr
554 fakeanchor : fakeanchor '\n'
555 | fakeanchor anchorrule '\n'
556 | fakeanchor binatrule '\n'
557 | fakeanchor natrule '\n'
558 | fakeanchor pfrule '\n'
559 | fakeanchor error '\n'
563 if (!strcmp($1, "none"))
565 else if (!strcmp($1, "basic"))
566 $$ = PF_OPTIMIZE_BASIC;
567 else if (!strcmp($1, "profile"))
568 $$ = PF_OPTIMIZE_BASIC | PF_OPTIMIZE_PROFILE;
570 yyerror("unknown ruleset-optimization %s", $1);
576 option : SET OPTIMIZATION STRING {
577 if (check_rulestate(PFCTL_STATE_OPTION)) {
581 if (pfctl_set_optimization(pf, $3) != 0) {
582 yyerror("unknown optimization %s", $3);
588 | SET RULESET_OPTIMIZATION optimizer {
589 if (!(pf->opts & PF_OPT_OPTIMIZE)) {
590 pf->opts |= PF_OPT_OPTIMIZE;
594 | SET TIMEOUT timeout_spec
595 | SET TIMEOUT '{' optnl timeout_list '}'
596 | SET LIMIT limit_spec
597 | SET LIMIT '{' optnl limit_list '}'
598 | SET LOGINTERFACE stringall {
599 if (check_rulestate(PFCTL_STATE_OPTION)) {
603 if (pfctl_set_logif(pf, $3) != 0) {
604 yyerror("error setting loginterface %s", $3);
610 | SET HOSTID number {
611 if ($3 == 0 || $3 > UINT_MAX) {
612 yyerror("hostid must be non-zero");
615 if (pfctl_set_hostid(pf, $3) != 0) {
616 yyerror("error setting hostid %08x", $3);
620 | SET BLOCKPOLICY DROP {
621 if (pf->opts & PF_OPT_VERBOSE)
622 printf("set block-policy drop\n");
623 if (check_rulestate(PFCTL_STATE_OPTION))
625 blockpolicy = PFRULE_DROP;
627 | SET BLOCKPOLICY RETURN {
628 if (pf->opts & PF_OPT_VERBOSE)
629 printf("set block-policy return\n");
630 if (check_rulestate(PFCTL_STATE_OPTION))
632 blockpolicy = PFRULE_RETURN;
634 | SET REQUIREORDER yesno {
635 if (pf->opts & PF_OPT_VERBOSE)
636 printf("set require-order %s\n",
637 $3 == 1 ? "yes" : "no");
640 | SET FINGERPRINTS STRING {
641 if (pf->opts & PF_OPT_VERBOSE)
642 printf("set fingerprints \"%s\"\n", $3);
643 if (check_rulestate(PFCTL_STATE_OPTION)) {
647 if (!pf->anchor->name[0]) {
648 if (pfctl_file_fingerprints(pf->dev,
650 yyerror("error loading "
651 "fingerprints %s", $3);
658 | SET STATEPOLICY statelock {
659 if (pf->opts & PF_OPT_VERBOSE)
662 printf("set state-policy floating\n");
665 printf("set state-policy if-bound\n");
668 default_statelock = $3;
671 if (check_rulestate(PFCTL_STATE_OPTION)) {
675 if (pfctl_set_debug(pf, $3) != 0) {
676 yyerror("error setting debuglevel %s", $3);
682 | SET SKIP interface {
683 if (expand_skip_interface($3) != 0) {
684 yyerror("error setting skip interface(s)");
688 | SET STATEDEFAULTS state_opt_list {
689 if (keep_state_defaults != NULL) {
690 yyerror("cannot redefine state-defaults");
693 keep_state_defaults = $3;
697 stringall : STRING { $$ = $1; }
699 if (($$ = strdup("all")) == NULL) {
700 err(1, "stringall: strdup");
705 string : STRING string {
706 if (asprintf(&$$, "%s %s", $1, $2) == -1)
707 err(1, "string: asprintf");
714 varstring : numberstring varstring {
715 if (asprintf(&$$, "%s %s", $1, $2) == -1)
716 err(1, "string: asprintf");
723 numberstring : NUMBER {
725 if (asprintf(&s, "%lld", (long long)$1) == -1) {
726 yyerror("string: asprintf");
734 varset : STRING '=' varstring {
735 if (pf->opts & PF_OPT_VERBOSE)
736 printf("%s = \"%s\"\n", $1, $3);
737 if (symset($1, $3, 0) == -1)
738 err(1, "cannot store variable %s", $1);
744 anchorname : STRING { $$ = $1; }
745 | /* empty */ { $$ = NULL; }
748 pfa_anchorlist : /* empty */
749 | pfa_anchorlist '\n'
750 | pfa_anchorlist pfrule '\n'
751 | pfa_anchorlist anchorrule '\n'
756 char ta[PF_ANCHOR_NAME_SIZE];
757 struct pf_ruleset *rs;
759 /* steping into a brace anchor */
764 /* create a holding ruleset in the root */
765 snprintf(ta, PF_ANCHOR_NAME_SIZE, "_%d", pf->bn);
766 rs = pf_find_or_create_ruleset(ta);
768 err(1, "pfa_anchor: pf_find_or_create_ruleset");
769 pf->astack[pf->asd] = rs->anchor;
770 pf->anchor = rs->anchor;
771 } '\n' pfa_anchorlist '}'
773 pf->alast = pf->anchor;
775 pf->anchor = pf->astack[pf->asd];
780 anchorrule : ANCHOR anchorname dir quick interface af proto fromto
781 filter_opts pfa_anchor
784 struct node_proto *proto;
786 if (check_rulestate(PFCTL_STATE_FILTER)) {
792 if ($2 && ($2[0] == '_' || strstr($2, "/_") != NULL)) {
794 yyerror("anchor names beginning with '_' "
795 "are reserved for internal use");
799 memset(&r, 0, sizeof(r));
800 if (pf->astack[pf->asd + 1]) {
801 /* move inline rules into relative location */
803 &pf->astack[pf->asd]->ruleset,
804 $2 ? $2 : pf->alast->name);
806 if (r.anchor == NULL)
807 err(1, "anchorrule: unable to "
810 if (pf->alast != r.anchor) {
811 if (r.anchor->match) {
812 yyerror("inline anchor '%s' "
817 mv_rules(&pf->alast->ruleset,
820 pf_remove_if_empty_ruleset(&pf->alast->ruleset);
821 pf->alast = r.anchor;
824 yyerror("anchors without explicit "
825 "rules must specify a name");
833 r.rtableid = $9.rtableid;
836 if (strlcpy(r.tagname, $9.tag,
837 PF_TAG_NAME_SIZE) >= PF_TAG_NAME_SIZE) {
838 yyerror("tag too long, max %u chars",
839 PF_TAG_NAME_SIZE - 1);
843 if (strlcpy(r.match_tagname, $9.match_tag,
844 PF_TAG_NAME_SIZE) >= PF_TAG_NAME_SIZE) {
845 yyerror("tag too long, max %u chars",
846 PF_TAG_NAME_SIZE - 1);
849 r.match_tag_not = $9.match_tag_not;
850 if (rule_label(&r, $9.label))
853 r.flags = $9.flags.b1;
854 r.flagset = $9.flags.b2;
855 if (($9.flags.b1 & $9.flags.b2) != $9.flags.b1) {
856 yyerror("flags always false");
859 if ($9.flags.b1 || $9.flags.b2 || $8.src_os) {
860 for (proto = $7; proto != NULL &&
861 proto->proto != IPPROTO_TCP;
864 if (proto == NULL && $7 != NULL) {
865 if ($9.flags.b1 || $9.flags.b2)
867 "flags only apply to tcp");
870 "OS fingerprinting only "
878 if ($9.keep.action) {
879 yyerror("cannot specify state handling "
885 if (strlcpy(r.match_tagname, $9.match_tag,
886 PF_TAG_NAME_SIZE) >= PF_TAG_NAME_SIZE) {
887 yyerror("tag too long, max %u chars",
888 PF_TAG_NAME_SIZE - 1);
891 r.match_tag_not = $9.match_tag_not;
893 decide_address_family($8.src.host, &r.af);
894 decide_address_family($8.dst.host, &r.af);
896 expand_rule(&r, $5, NULL, $7, $8.src_os,
897 $8.src.host, $8.src.port, $8.dst.host, $8.dst.port,
898 $9.uid, $9.gid, $9.icmpspec,
899 pf->astack[pf->asd + 1] ? pf->alast->name : $2);
901 pf->astack[pf->asd + 1] = NULL;
903 | NATANCHOR string interface af proto fromto rtable {
906 if (check_rulestate(PFCTL_STATE_NAT)) {
911 memset(&r, 0, sizeof(r));
916 decide_address_family($6.src.host, &r.af);
917 decide_address_family($6.dst.host, &r.af);
919 expand_rule(&r, $3, NULL, $5, $6.src_os,
920 $6.src.host, $6.src.port, $6.dst.host, $6.dst.port,
924 | RDRANCHOR string interface af proto fromto rtable {
927 if (check_rulestate(PFCTL_STATE_NAT)) {
932 memset(&r, 0, sizeof(r));
937 decide_address_family($6.src.host, &r.af);
938 decide_address_family($6.dst.host, &r.af);
940 if ($6.src.port != NULL) {
941 yyerror("source port parameter not supported"
945 if ($6.dst.port != NULL) {
946 if ($6.dst.port->next != NULL) {
947 yyerror("destination port list "
948 "expansion not supported in "
951 } else if ($6.dst.port->op != PF_OP_EQ) {
952 yyerror("destination port operators"
953 " not supported in rdr-anchor");
956 r.dst.port[0] = $6.dst.port->port[0];
957 r.dst.port[1] = $6.dst.port->port[1];
958 r.dst.port_op = $6.dst.port->op;
961 expand_rule(&r, $3, NULL, $5, $6.src_os,
962 $6.src.host, $6.src.port, $6.dst.host, $6.dst.port,
966 | BINATANCHOR string interface af proto fromto rtable {
969 if (check_rulestate(PFCTL_STATE_NAT)) {
974 memset(&r, 0, sizeof(r));
979 if ($5->next != NULL) {
980 yyerror("proto list expansion"
981 " not supported in binat-anchor");
988 if ($6.src.host != NULL || $6.src.port != NULL ||
989 $6.dst.host != NULL || $6.dst.port != NULL) {
990 yyerror("fromto parameter not supported"
995 decide_address_family($6.src.host, &r.af);
996 decide_address_family($6.dst.host, &r.af);
998 pfctl_add_rule(pf, &r, $2);
1003 loadrule : LOAD ANCHOR string FROM string {
1004 struct loadanchors *loadanchor;
1006 if (strlen(pf->anchor->name) + 1 +
1007 strlen($3) >= MAXPATHLEN) {
1008 yyerror("anchorname %s too long, max %u\n",
1009 $3, MAXPATHLEN - 1);
1013 loadanchor = calloc(1, sizeof(struct loadanchors));
1014 if (loadanchor == NULL)
1015 err(1, "loadrule: calloc");
1016 if ((loadanchor->anchorname = malloc(MAXPATHLEN)) ==
1018 err(1, "loadrule: malloc");
1019 if (pf->anchor->name[0])
1020 snprintf(loadanchor->anchorname, MAXPATHLEN,
1021 "%s/%s", pf->anchor->name, $3);
1023 strlcpy(loadanchor->anchorname, $3, MAXPATHLEN);
1024 if ((loadanchor->filename = strdup($5)) == NULL)
1025 err(1, "loadrule: strdup");
1027 TAILQ_INSERT_TAIL(&loadanchorshead, loadanchor,
1034 scrubaction : no SCRUB {
1043 scrubrule : scrubaction dir logquick interface af proto fromto scrub_opts
1047 if (check_rulestate(PFCTL_STATE_SCRUB))
1050 memset(&r, 0, sizeof(r));
1058 yyerror("scrub rules do not support 'quick'");
1064 r.rule_flag |= PFRULE_NODF;
1066 r.rule_flag |= PFRULE_RANDOMID;
1067 if ($8.reassemble_tcp) {
1068 if (r.direction != PF_INOUT) {
1069 yyerror("reassemble tcp rules can not "
1070 "specify direction");
1073 r.rule_flag |= PFRULE_REASSEMBLE_TCP;
1076 r.min_ttl = $8.minttl;
1078 r.max_mss = $8.maxmss;
1079 if ($8.marker & SOM_SETTOS) {
1080 r.rule_flag |= PFRULE_SET_TOS;
1081 r.set_tos = $8.settos;
1084 r.rule_flag |= $8.fragcache;
1086 if (strlcpy(r.match_tagname, $8.match_tag,
1087 PF_TAG_NAME_SIZE) >= PF_TAG_NAME_SIZE) {
1088 yyerror("tag too long, max %u chars",
1089 PF_TAG_NAME_SIZE - 1);
1092 r.match_tag_not = $8.match_tag_not;
1093 r.rtableid = $8.rtableid;
1095 expand_rule(&r, $4, NULL, $6, $7.src_os,
1096 $7.src.host, $7.src.port, $7.dst.host, $7.dst.port,
1097 NULL, NULL, NULL, "");
1102 bzero(&scrub_opts, sizeof scrub_opts);
1103 scrub_opts.rtableid = -1;
1106 { $$ = scrub_opts; }
1108 bzero(&scrub_opts, sizeof scrub_opts);
1109 scrub_opts.rtableid = -1;
1114 scrub_opts_l : scrub_opts_l scrub_opt
1119 if (scrub_opts.nodf) {
1120 yyerror("no-df cannot be respecified");
1123 scrub_opts.nodf = 1;
1126 if (scrub_opts.marker & SOM_MINTTL) {
1127 yyerror("min-ttl cannot be respecified");
1130 if ($2 < 0 || $2 > 255) {
1131 yyerror("illegal min-ttl value %d", $2);
1134 scrub_opts.marker |= SOM_MINTTL;
1135 scrub_opts.minttl = $2;
1138 if (scrub_opts.marker & SOM_MAXMSS) {
1139 yyerror("max-mss cannot be respecified");
1142 if ($2 < 0 || $2 > 65535) {
1143 yyerror("illegal max-mss value %d", $2);
1146 scrub_opts.marker |= SOM_MAXMSS;
1147 scrub_opts.maxmss = $2;
1150 if (scrub_opts.marker & SOM_SETTOS) {
1151 yyerror("set-tos cannot be respecified");
1154 scrub_opts.marker |= SOM_SETTOS;
1155 scrub_opts.settos = $2;
1158 if (scrub_opts.marker & SOM_FRAGCACHE) {
1159 yyerror("fragcache cannot be respecified");
1162 scrub_opts.marker |= SOM_FRAGCACHE;
1163 scrub_opts.fragcache = $1;
1165 | REASSEMBLE STRING {
1166 if (strcasecmp($2, "tcp") != 0) {
1167 yyerror("scrub reassemble supports only tcp, "
1173 if (scrub_opts.reassemble_tcp) {
1174 yyerror("reassemble tcp cannot be respecified");
1177 scrub_opts.reassemble_tcp = 1;
1180 if (scrub_opts.randomid) {
1181 yyerror("random-id cannot be respecified");
1184 scrub_opts.randomid = 1;
1187 if ($2 < 0 || $2 > rt_tableid_max()) {
1188 yyerror("invalid rtable id");
1191 scrub_opts.rtableid = $2;
1193 | not TAGGED string {
1194 scrub_opts.match_tag = $3;
1195 scrub_opts.match_tag_not = $1;
1199 fragcache : FRAGMENT REASSEMBLE { $$ = 0; /* default */ }
1200 | FRAGMENT FRAGCROP { $$ = PFRULE_FRAGCROP; }
1201 | FRAGMENT FRAGDROP { $$ = PFRULE_FRAGDROP; }
1204 antispoof : ANTISPOOF logquick antispoof_ifspc af antispoof_opts {
1206 struct node_host *h = NULL, *hh;
1207 struct node_if *i, *j;
1209 if (check_rulestate(PFCTL_STATE_FILTER))
1212 for (i = $3; i; i = i->next) {
1213 bzero(&r, sizeof(r));
1216 r.direction = PF_IN;
1221 if (rule_label(&r, $5.label))
1223 r.rtableid = $5.rtableid;
1224 j = calloc(1, sizeof(struct node_if));
1226 err(1, "antispoof: calloc");
1227 if (strlcpy(j->ifname, i->ifname,
1228 sizeof(j->ifname)) >= sizeof(j->ifname)) {
1230 yyerror("interface name too long");
1235 h = calloc(1, sizeof(*h));
1237 err(1, "address: calloc");
1238 h->addr.type = PF_ADDR_DYNIFTL;
1240 if (strlcpy(h->addr.v.ifname, i->ifname,
1241 sizeof(h->addr.v.ifname)) >=
1242 sizeof(h->addr.v.ifname)) {
1245 "interface name too long");
1248 hh = malloc(sizeof(*hh));
1250 err(1, "address: malloc");
1251 bcopy(h, hh, sizeof(*hh));
1252 h->addr.iflags = PFI_AFLAG_NETWORK;
1254 h = ifa_lookup(j->ifname,
1260 expand_rule(&r, j, NULL, NULL, NULL, h,
1261 NULL, NULL, NULL, NULL, NULL,
1264 if ((i->ifa_flags & IFF_LOOPBACK) == 0) {
1265 bzero(&r, sizeof(r));
1268 r.direction = PF_IN;
1273 if (rule_label(&r, $5.label))
1275 r.rtableid = $5.rtableid;
1279 h = ifa_lookup(i->ifname, 0);
1281 expand_rule(&r, NULL, NULL,
1282 NULL, NULL, h, NULL, NULL,
1283 NULL, NULL, NULL, NULL, "");
1291 antispoof_ifspc : FOR antispoof_if { $$ = $2; }
1292 | FOR '{' optnl antispoof_iflst '}' { $$ = $4; }
1295 antispoof_iflst : antispoof_if optnl { $$ = $1; }
1296 | antispoof_iflst comma antispoof_if optnl {
1297 $1->tail->next = $3;
1303 antispoof_if : if_item { $$ = $1; }
1311 bzero(&antispoof_opts, sizeof antispoof_opts);
1312 antispoof_opts.rtableid = -1;
1315 { $$ = antispoof_opts; }
1317 bzero(&antispoof_opts, sizeof antispoof_opts);
1318 antispoof_opts.rtableid = -1;
1319 $$ = antispoof_opts;
1323 antispoof_opts_l : antispoof_opts_l antispoof_opt
1327 antispoof_opt : label {
1328 if (antispoof_opts.label) {
1329 yyerror("label cannot be redefined");
1332 antispoof_opts.label = $1;
1335 if ($2 < 0 || $2 > rt_tableid_max()) {
1336 yyerror("invalid rtable id");
1339 antispoof_opts.rtableid = $2;
1343 not : '!' { $$ = 1; }
1344 | /* empty */ { $$ = 0; }
1347 tabledef : TABLE '<' STRING '>' table_opts {
1348 struct node_host *h, *nh;
1349 struct node_tinit *ti, *nti;
1351 if (strlen($3) >= PF_TABLE_NAME_SIZE) {
1352 yyerror("table name too long, max %d chars",
1353 PF_TABLE_NAME_SIZE - 1);
1357 if (pf->loadopt & PFCTL_FLAG_TABLE)
1358 if (process_tabledef($3, &$5)) {
1363 for (ti = SIMPLEQ_FIRST(&$5.init_nodes);
1364 ti != SIMPLEQ_END(&$5.init_nodes); ti = nti) {
1367 for (h = ti->host; h != NULL; h = nh) {
1371 nti = SIMPLEQ_NEXT(ti, entries);
1378 bzero(&table_opts, sizeof table_opts);
1379 SIMPLEQ_INIT(&table_opts.init_nodes);
1382 { $$ = table_opts; }
1385 bzero(&table_opts, sizeof table_opts);
1386 SIMPLEQ_INIT(&table_opts.init_nodes);
1391 table_opts_l : table_opts_l table_opt
1395 table_opt : STRING {
1396 if (!strcmp($1, "const"))
1397 table_opts.flags |= PFR_TFLAG_CONST;
1398 else if (!strcmp($1, "persist"))
1399 table_opts.flags |= PFR_TFLAG_PERSIST;
1400 else if (!strcmp($1, "counters"))
1401 table_opts.flags |= PFR_TFLAG_COUNTERS;
1403 yyerror("invalid table option '%s'", $1);
1409 | '{' optnl '}' { table_opts.init_addr = 1; }
1410 | '{' optnl host_list '}' {
1411 struct node_host *n;
1412 struct node_tinit *ti;
1414 for (n = $3; n != NULL; n = n->next) {
1415 switch (n->addr.type) {
1416 case PF_ADDR_ADDRMASK:
1419 yyerror("address ranges are not "
1420 "permitted inside tables");
1422 case PF_ADDR_DYNIFTL:
1423 yyerror("dynamic addresses are not "
1424 "permitted inside tables");
1427 yyerror("tables cannot contain tables");
1429 case PF_ADDR_NOROUTE:
1430 yyerror("\"no-route\" is not permitted "
1433 case PF_ADDR_URPFFAILED:
1434 yyerror("\"urpf-failed\" is not "
1435 "permitted inside tables");
1438 yyerror("unknown address type %d",
1443 if (!(ti = calloc(1, sizeof(*ti))))
1444 err(1, "table_opt: calloc");
1446 SIMPLEQ_INSERT_TAIL(&table_opts.init_nodes, ti,
1448 table_opts.init_addr = 1;
1451 struct node_tinit *ti;
1453 if (!(ti = calloc(1, sizeof(*ti))))
1454 err(1, "table_opt: calloc");
1456 SIMPLEQ_INSERT_TAIL(&table_opts.init_nodes, ti,
1458 table_opts.init_addr = 1;
1462 altqif : ALTQ interface queue_opts QUEUE qassign {
1465 if (check_rulestate(PFCTL_STATE_QUEUE))
1468 memset(&a, 0, sizeof(a));
1469 if ($3.scheduler.qtype == ALTQT_NONE) {
1470 yyerror("no scheduler specified!");
1473 a.scheduler = $3.scheduler.qtype;
1474 a.qlimit = $3.qlimit;
1475 a.tbrsize = $3.tbrsize;
1476 if ($5 == NULL && $3.scheduler.qtype != ALTQT_CODEL) {
1477 yyerror("no child queues specified");
1480 if (expand_altq(&a, $2, $5, $3.queue_bwspec,
1486 queuespec : QUEUE STRING interface queue_opts qassign {
1489 if (check_rulestate(PFCTL_STATE_QUEUE)) {
1494 memset(&a, 0, sizeof(a));
1496 if (strlcpy(a.qname, $2, sizeof(a.qname)) >=
1498 yyerror("queue name too long (max "
1499 "%d chars)", PF_QNAME_SIZE-1);
1505 yyerror("cannot specify tbrsize for queue");
1508 if ($4.priority > 255) {
1509 yyerror("priority out of range: max 255");
1512 a.priority = $4.priority;
1513 a.qlimit = $4.qlimit;
1514 a.scheduler = $4.scheduler.qtype;
1515 if (expand_queue(&a, $3, $5, $4.queue_bwspec,
1517 yyerror("errors in queue definition");
1524 bzero(&queue_opts, sizeof queue_opts);
1525 queue_opts.priority = DEFAULT_PRIORITY;
1526 queue_opts.qlimit = DEFAULT_QLIMIT;
1527 queue_opts.scheduler.qtype = ALTQT_NONE;
1528 queue_opts.queue_bwspec.bw_percent = 100;
1531 { $$ = queue_opts; }
1533 bzero(&queue_opts, sizeof queue_opts);
1534 queue_opts.priority = DEFAULT_PRIORITY;
1535 queue_opts.qlimit = DEFAULT_QLIMIT;
1536 queue_opts.scheduler.qtype = ALTQT_NONE;
1537 queue_opts.queue_bwspec.bw_percent = 100;
1542 queue_opts_l : queue_opts_l queue_opt
1546 queue_opt : BANDWIDTH bandwidth {
1547 if (queue_opts.marker & QOM_BWSPEC) {
1548 yyerror("bandwidth cannot be respecified");
1551 queue_opts.marker |= QOM_BWSPEC;
1552 queue_opts.queue_bwspec = $2;
1555 if (queue_opts.marker & QOM_PRIORITY) {
1556 yyerror("priority cannot be respecified");
1559 if ($2 < 0 || $2 > 255) {
1560 yyerror("priority out of range: max 255");
1563 queue_opts.marker |= QOM_PRIORITY;
1564 queue_opts.priority = $2;
1567 if (queue_opts.marker & QOM_QLIMIT) {
1568 yyerror("qlimit cannot be respecified");
1571 if ($2 < 0 || $2 > 65535) {
1572 yyerror("qlimit out of range: max 65535");
1575 queue_opts.marker |= QOM_QLIMIT;
1576 queue_opts.qlimit = $2;
1579 if (queue_opts.marker & QOM_SCHEDULER) {
1580 yyerror("scheduler cannot be respecified");
1583 queue_opts.marker |= QOM_SCHEDULER;
1584 queue_opts.scheduler = $1;
1587 if (queue_opts.marker & QOM_TBRSIZE) {
1588 yyerror("tbrsize cannot be respecified");
1591 if ($2 < 0 || $2 > 65535) {
1592 yyerror("tbrsize too big: max 65535");
1595 queue_opts.marker |= QOM_TBRSIZE;
1596 queue_opts.tbrsize = $2;
1600 bandwidth : STRING {
1606 bps = strtod($1, &cp);
1608 if (strlen(cp) > 1) {
1610 if (!strcmp(cu, "Bit") ||
1612 !strcmp(cu, "bit") ||
1617 if (!strcmp(cp, "b"))
1619 else if (!strcmp(cp, "K"))
1621 else if (!strcmp(cp, "M"))
1623 else if (!strcmp(cp, "G"))
1624 bps *= 1000 * 1000 * 1000;
1625 else if (!strcmp(cp, "%")) {
1626 if (bps < 0 || bps > 100) {
1627 yyerror("bandwidth spec "
1632 $$.bw_percent = bps;
1635 yyerror("unknown unit %s", cp);
1641 $$.bw_absolute = (u_int32_t)bps;
1644 if ($1 < 0 || $1 > UINT_MAX) {
1645 yyerror("bandwidth number too big");
1649 $$.bw_absolute = $1;
1654 $$.qtype = ALTQT_CBQ;
1655 $$.data.cbq_opts.flags = 0;
1657 | CBQ '(' cbqflags_list ')' {
1658 $$.qtype = ALTQT_CBQ;
1659 $$.data.cbq_opts.flags = $3;
1662 $$.qtype = ALTQT_PRIQ;
1663 $$.data.priq_opts.flags = 0;
1665 | PRIQ '(' priqflags_list ')' {
1666 $$.qtype = ALTQT_PRIQ;
1667 $$.data.priq_opts.flags = $3;
1670 $$.qtype = ALTQT_HFSC;
1671 bzero(&$$.data.hfsc_opts,
1672 sizeof(struct node_hfsc_opts));
1674 | HFSC '(' hfsc_opts ')' {
1675 $$.qtype = ALTQT_HFSC;
1676 $$.data.hfsc_opts = $3;
1679 $$.qtype = ALTQT_FAIRQ;
1680 bzero(&$$.data.fairq_opts,
1681 sizeof(struct node_fairq_opts));
1683 | FAIRQ '(' fairq_opts ')' {
1684 $$.qtype = ALTQT_FAIRQ;
1685 $$.data.fairq_opts = $3;
1688 $$.qtype = ALTQT_CODEL;
1689 bzero(&$$.data.codel_opts,
1690 sizeof(struct codel_opts));
1692 | CODEL '(' codel_opts ')' {
1693 $$.qtype = ALTQT_CODEL;
1694 $$.data.codel_opts = $3;
1698 cbqflags_list : cbqflags_item { $$ |= $1; }
1699 | cbqflags_list comma cbqflags_item { $$ |= $3; }
1702 cbqflags_item : STRING {
1703 if (!strcmp($1, "default"))
1704 $$ = CBQCLF_DEFCLASS;
1705 else if (!strcmp($1, "borrow"))
1707 else if (!strcmp($1, "red"))
1709 else if (!strcmp($1, "ecn"))
1710 $$ = CBQCLF_RED|CBQCLF_ECN;
1711 else if (!strcmp($1, "rio"))
1713 else if (!strcmp($1, "codel"))
1716 yyerror("unknown cbq flag \"%s\"", $1);
1724 priqflags_list : priqflags_item { $$ |= $1; }
1725 | priqflags_list comma priqflags_item { $$ |= $3; }
1728 priqflags_item : STRING {
1729 if (!strcmp($1, "default"))
1730 $$ = PRCF_DEFAULTCLASS;
1731 else if (!strcmp($1, "red"))
1733 else if (!strcmp($1, "ecn"))
1734 $$ = PRCF_RED|PRCF_ECN;
1735 else if (!strcmp($1, "rio"))
1737 else if (!strcmp($1, "codel"))
1740 yyerror("unknown priq flag \"%s\"", $1);
1750 sizeof(struct node_hfsc_opts));
1757 hfscopts_list : hfscopts_item
1758 | hfscopts_list comma hfscopts_item
1761 hfscopts_item : LINKSHARE bandwidth {
1762 if (hfsc_opts.linkshare.used) {
1763 yyerror("linkshare already specified");
1766 hfsc_opts.linkshare.m2 = $2;
1767 hfsc_opts.linkshare.used = 1;
1769 | LINKSHARE '(' bandwidth comma NUMBER comma bandwidth ')'
1771 if ($5 < 0 || $5 > INT_MAX) {
1772 yyerror("timing in curve out of range");
1775 if (hfsc_opts.linkshare.used) {
1776 yyerror("linkshare already specified");
1779 hfsc_opts.linkshare.m1 = $3;
1780 hfsc_opts.linkshare.d = $5;
1781 hfsc_opts.linkshare.m2 = $7;
1782 hfsc_opts.linkshare.used = 1;
1784 | REALTIME bandwidth {
1785 if (hfsc_opts.realtime.used) {
1786 yyerror("realtime already specified");
1789 hfsc_opts.realtime.m2 = $2;
1790 hfsc_opts.realtime.used = 1;
1792 | REALTIME '(' bandwidth comma NUMBER comma bandwidth ')'
1794 if ($5 < 0 || $5 > INT_MAX) {
1795 yyerror("timing in curve out of range");
1798 if (hfsc_opts.realtime.used) {
1799 yyerror("realtime already specified");
1802 hfsc_opts.realtime.m1 = $3;
1803 hfsc_opts.realtime.d = $5;
1804 hfsc_opts.realtime.m2 = $7;
1805 hfsc_opts.realtime.used = 1;
1807 | UPPERLIMIT bandwidth {
1808 if (hfsc_opts.upperlimit.used) {
1809 yyerror("upperlimit already specified");
1812 hfsc_opts.upperlimit.m2 = $2;
1813 hfsc_opts.upperlimit.used = 1;
1815 | UPPERLIMIT '(' bandwidth comma NUMBER comma bandwidth ')'
1817 if ($5 < 0 || $5 > INT_MAX) {
1818 yyerror("timing in curve out of range");
1821 if (hfsc_opts.upperlimit.used) {
1822 yyerror("upperlimit already specified");
1825 hfsc_opts.upperlimit.m1 = $3;
1826 hfsc_opts.upperlimit.d = $5;
1827 hfsc_opts.upperlimit.m2 = $7;
1828 hfsc_opts.upperlimit.used = 1;
1831 if (!strcmp($1, "default"))
1832 hfsc_opts.flags |= HFCF_DEFAULTCLASS;
1833 else if (!strcmp($1, "red"))
1834 hfsc_opts.flags |= HFCF_RED;
1835 else if (!strcmp($1, "ecn"))
1836 hfsc_opts.flags |= HFCF_RED|HFCF_ECN;
1837 else if (!strcmp($1, "rio"))
1838 hfsc_opts.flags |= HFCF_RIO;
1839 else if (!strcmp($1, "codel"))
1840 hfsc_opts.flags |= HFCF_CODEL;
1842 yyerror("unknown hfsc flag \"%s\"", $1);
1852 sizeof(struct node_fairq_opts));
1859 fairqopts_list : fairqopts_item
1860 | fairqopts_list comma fairqopts_item
1863 fairqopts_item : LINKSHARE bandwidth {
1864 if (fairq_opts.linkshare.used) {
1865 yyerror("linkshare already specified");
1868 fairq_opts.linkshare.m2 = $2;
1869 fairq_opts.linkshare.used = 1;
1871 | LINKSHARE '(' bandwidth number bandwidth ')' {
1872 if (fairq_opts.linkshare.used) {
1873 yyerror("linkshare already specified");
1876 fairq_opts.linkshare.m1 = $3;
1877 fairq_opts.linkshare.d = $4;
1878 fairq_opts.linkshare.m2 = $5;
1879 fairq_opts.linkshare.used = 1;
1882 fairq_opts.hogs_bw = $2;
1885 fairq_opts.nbuckets = $2;
1888 if (!strcmp($1, "default"))
1889 fairq_opts.flags |= FARF_DEFAULTCLASS;
1890 else if (!strcmp($1, "red"))
1891 fairq_opts.flags |= FARF_RED;
1892 else if (!strcmp($1, "ecn"))
1893 fairq_opts.flags |= FARF_RED|FARF_ECN;
1894 else if (!strcmp($1, "rio"))
1895 fairq_opts.flags |= FARF_RIO;
1896 else if (!strcmp($1, "codel"))
1897 fairq_opts.flags |= FARF_CODEL;
1899 yyerror("unknown fairq flag \"%s\"", $1);
1909 sizeof(struct codel_opts));
1916 codelopts_list : codelopts_item
1917 | codelopts_list comma codelopts_item
1920 codelopts_item : INTERVAL number {
1921 if (codel_opts.interval) {
1922 yyerror("interval already specified");
1925 codel_opts.interval = $2;
1928 if (codel_opts.target) {
1929 yyerror("target already specified");
1932 codel_opts.target = $2;
1935 if (!strcmp($1, "ecn"))
1938 yyerror("unknown codel option \"%s\"", $1);
1946 qassign : /* empty */ { $$ = NULL; }
1947 | qassign_item { $$ = $1; }
1948 | '{' optnl qassign_list '}' { $$ = $3; }
1951 qassign_list : qassign_item optnl { $$ = $1; }
1952 | qassign_list comma qassign_item optnl {
1953 $1->tail->next = $3;
1959 qassign_item : STRING {
1960 $$ = calloc(1, sizeof(struct node_queue));
1962 err(1, "qassign_item: calloc");
1963 if (strlcpy($$->queue, $1, sizeof($$->queue)) >=
1964 sizeof($$->queue)) {
1965 yyerror("queue name '%s' too long (max "
1966 "%d chars)", $1, sizeof($$->queue)-1);
1977 pfrule : action dir logquick interface route af proto fromto
1981 struct node_state_opt *o;
1982 struct node_proto *proto;
1988 if (check_rulestate(PFCTL_STATE_FILTER))
1991 memset(&r, 0, sizeof(r));
1995 case PFRULE_RETURNRST:
1996 r.rule_flag |= PFRULE_RETURNRST;
1997 r.return_ttl = $1.w;
1999 case PFRULE_RETURNICMP:
2000 r.rule_flag |= PFRULE_RETURNICMP;
2001 r.return_icmp = $1.w;
2002 r.return_icmp6 = $1.w2;
2005 r.rule_flag |= PFRULE_RETURN;
2006 r.return_icmp = $1.w;
2007 r.return_icmp6 = $1.w2;
2015 r.rtableid = $9.rtableid;
2019 if (strlcpy(r.tagname, $9.tag,
2020 PF_TAG_NAME_SIZE) >= PF_TAG_NAME_SIZE) {
2021 yyerror("tag too long, max %u chars",
2022 PF_TAG_NAME_SIZE - 1);
2026 if (strlcpy(r.match_tagname, $9.match_tag,
2027 PF_TAG_NAME_SIZE) >= PF_TAG_NAME_SIZE) {
2028 yyerror("tag too long, max %u chars",
2029 PF_TAG_NAME_SIZE - 1);
2032 r.match_tag_not = $9.match_tag_not;
2033 if (rule_label(&r, $9.label))
2036 r.flags = $9.flags.b1;
2037 r.flagset = $9.flags.b2;
2038 if (($9.flags.b1 & $9.flags.b2) != $9.flags.b1) {
2039 yyerror("flags always false");
2042 if ($9.flags.b1 || $9.flags.b2 || $8.src_os) {
2043 for (proto = $7; proto != NULL &&
2044 proto->proto != IPPROTO_TCP;
2045 proto = proto->next)
2047 if (proto == NULL && $7 != NULL) {
2048 if ($9.flags.b1 || $9.flags.b2)
2050 "flags only apply to tcp");
2053 "OS fingerprinting only "
2058 if (($9.flags.b1 & parse_flags("S")) == 0 &&
2060 yyerror("OS fingerprinting requires "
2061 "the SYN TCP flag (flags S/SA)");
2068 r.keep_state = $9.keep.action;
2069 o = $9.keep.options;
2071 /* 'keep state' by default on pass rules. */
2072 if (!r.keep_state && !r.action &&
2073 !($9.marker & FOM_KEEP)) {
2074 r.keep_state = PF_STATE_NORMAL;
2075 o = keep_state_defaults;
2080 struct node_state_opt *p = o;
2083 case PF_STATE_OPT_MAX:
2085 yyerror("state option 'max' "
2086 "multiple definitions");
2089 r.max_states = o->data.max_states;
2091 case PF_STATE_OPT_NOSYNC:
2092 if (r.rule_flag & PFRULE_NOSYNC) {
2093 yyerror("state option 'sync' "
2094 "multiple definitions");
2097 r.rule_flag |= PFRULE_NOSYNC;
2099 case PF_STATE_OPT_SRCTRACK:
2101 yyerror("state option "
2103 "multiple definitions");
2106 srctrack = o->data.src_track;
2107 r.rule_flag |= PFRULE_SRCTRACK;
2109 case PF_STATE_OPT_MAX_SRC_STATES:
2110 if (r.max_src_states) {
2111 yyerror("state option "
2113 "multiple definitions");
2116 if (o->data.max_src_states == 0) {
2117 yyerror("'max-src-states' must "
2122 o->data.max_src_states;
2123 r.rule_flag |= PFRULE_SRCTRACK;
2125 case PF_STATE_OPT_OVERLOAD:
2126 if (r.overload_tblname[0]) {
2127 yyerror("multiple 'overload' "
2128 "table definitions");
2131 if (strlcpy(r.overload_tblname,
2132 o->data.overload.tblname,
2133 PF_TABLE_NAME_SIZE) >=
2134 PF_TABLE_NAME_SIZE) {
2135 yyerror("state option: "
2139 r.flush = o->data.overload.flush;
2141 case PF_STATE_OPT_MAX_SRC_CONN:
2142 if (r.max_src_conn) {
2143 yyerror("state option "
2145 "multiple definitions");
2148 if (o->data.max_src_conn == 0) {
2149 yyerror("'max-src-conn' "
2154 o->data.max_src_conn;
2155 r.rule_flag |= PFRULE_SRCTRACK |
2156 PFRULE_RULESRCTRACK;
2158 case PF_STATE_OPT_MAX_SRC_CONN_RATE:
2159 if (r.max_src_conn_rate.limit) {
2160 yyerror("state option "
2161 "'max-src-conn-rate' "
2162 "multiple definitions");
2165 if (!o->data.max_src_conn_rate.limit ||
2166 !o->data.max_src_conn_rate.seconds) {
2167 yyerror("'max-src-conn-rate' "
2168 "values must be > 0");
2171 if (o->data.max_src_conn_rate.limit >
2173 yyerror("'max-src-conn-rate' "
2174 "maximum rate must be < %u",
2178 r.max_src_conn_rate.limit =
2179 o->data.max_src_conn_rate.limit;
2180 r.max_src_conn_rate.seconds =
2181 o->data.max_src_conn_rate.seconds;
2182 r.rule_flag |= PFRULE_SRCTRACK |
2183 PFRULE_RULESRCTRACK;
2185 case PF_STATE_OPT_MAX_SRC_NODES:
2186 if (r.max_src_nodes) {
2187 yyerror("state option "
2189 "multiple definitions");
2192 if (o->data.max_src_nodes == 0) {
2193 yyerror("'max-src-nodes' must "
2198 o->data.max_src_nodes;
2199 r.rule_flag |= PFRULE_SRCTRACK |
2200 PFRULE_RULESRCTRACK;
2202 case PF_STATE_OPT_STATELOCK:
2204 yyerror("state locking option: "
2205 "multiple definitions");
2209 r.rule_flag |= o->data.statelock;
2211 case PF_STATE_OPT_SLOPPY:
2212 if (r.rule_flag & PFRULE_STATESLOPPY) {
2213 yyerror("state sloppy option: "
2214 "multiple definitions");
2217 r.rule_flag |= PFRULE_STATESLOPPY;
2219 case PF_STATE_OPT_TIMEOUT:
2220 if (o->data.timeout.number ==
2221 PFTM_ADAPTIVE_START ||
2222 o->data.timeout.number ==
2225 if (r.timeout[o->data.timeout.number]) {
2226 yyerror("state timeout %s "
2227 "multiple definitions",
2228 pf_timeouts[o->data.
2229 timeout.number].name);
2232 r.timeout[o->data.timeout.number] =
2233 o->data.timeout.seconds;
2240 /* 'flags S/SA' by default on stateful rules */
2241 if (!r.action && !r.flags && !r.flagset &&
2242 !$9.fragment && !($9.marker & FOM_FLAGS) &&
2244 r.flags = parse_flags("S");
2245 r.flagset = parse_flags("SA");
2247 if (!adaptive && r.max_states) {
2248 r.timeout[PFTM_ADAPTIVE_START] =
2249 (r.max_states / 10) * 6;
2250 r.timeout[PFTM_ADAPTIVE_END] =
2251 (r.max_states / 10) * 12;
2253 if (r.rule_flag & PFRULE_SRCTRACK) {
2254 if (srctrack == PF_SRCTRACK_GLOBAL &&
2256 yyerror("'max-src-nodes' is "
2257 "incompatible with "
2258 "'source-track global'");
2261 if (srctrack == PF_SRCTRACK_GLOBAL &&
2263 yyerror("'max-src-conn' is "
2264 "incompatible with "
2265 "'source-track global'");
2268 if (srctrack == PF_SRCTRACK_GLOBAL &&
2269 r.max_src_conn_rate.seconds) {
2270 yyerror("'max-src-conn-rate' is "
2271 "incompatible with "
2272 "'source-track global'");
2275 if (r.timeout[PFTM_SRC_NODE] <
2276 r.max_src_conn_rate.seconds)
2277 r.timeout[PFTM_SRC_NODE] =
2278 r.max_src_conn_rate.seconds;
2279 r.rule_flag |= PFRULE_SRCTRACK;
2280 if (srctrack == PF_SRCTRACK_RULE)
2281 r.rule_flag |= PFRULE_RULESRCTRACK;
2283 if (r.keep_state && !statelock)
2284 r.rule_flag |= default_statelock;
2287 r.rule_flag |= PFRULE_FRAGMENT;
2288 r.allow_opts = $9.allowopts;
2290 decide_address_family($8.src.host, &r.af);
2291 decide_address_family($8.dst.host, &r.af);
2295 yyerror("direction must be explicit "
2296 "with rules that specify routing");
2300 r.rpool.opts = $5.pool_opts;
2302 memcpy(&r.rpool.key, $5.key,
2303 sizeof(struct pf_poolhashkey));
2305 if (r.rt && r.rt != PF_FASTROUTE) {
2306 decide_address_family($5.host, &r.af);
2307 remove_invalid_hosts(&$5.host, &r.af);
2308 if ($5.host == NULL) {
2309 yyerror("no routing address with "
2310 "matching address family found.");
2313 if ((r.rpool.opts & PF_POOL_TYPEMASK) ==
2314 PF_POOL_NONE && ($5.host->next != NULL ||
2315 $5.host->addr.type == PF_ADDR_TABLE ||
2316 DYNIF_MULTIADDR($5.host->addr)))
2317 r.rpool.opts |= PF_POOL_ROUNDROBIN;
2318 if ((r.rpool.opts & PF_POOL_TYPEMASK) !=
2319 PF_POOL_ROUNDROBIN &&
2320 disallow_table($5.host, "tables are only "
2321 "supported in round-robin routing pools"))
2323 if ((r.rpool.opts & PF_POOL_TYPEMASK) !=
2324 PF_POOL_ROUNDROBIN &&
2325 disallow_alias($5.host, "interface (%s) "
2326 "is only supported in round-robin "
2329 if ($5.host->next != NULL) {
2330 if ((r.rpool.opts & PF_POOL_TYPEMASK) !=
2331 PF_POOL_ROUNDROBIN) {
2332 yyerror("r.rpool.opts must "
2333 "be PF_POOL_ROUNDROBIN");
2338 if ($9.queues.qname != NULL) {
2339 if (strlcpy(r.qname, $9.queues.qname,
2340 sizeof(r.qname)) >= sizeof(r.qname)) {
2341 yyerror("rule qname too long (max "
2342 "%d chars)", sizeof(r.qname)-1);
2345 free($9.queues.qname);
2347 if ($9.queues.pqname != NULL) {
2348 if (strlcpy(r.pqname, $9.queues.pqname,
2349 sizeof(r.pqname)) >= sizeof(r.pqname)) {
2350 yyerror("rule pqname too long (max "
2351 "%d chars)", sizeof(r.pqname)-1);
2354 free($9.queues.pqname);
2357 r.divert.port = $9.divert.port;
2359 if ((r.divert.port = $9.divert.port)) {
2360 if (r.direction == PF_OUT) {
2361 if ($9.divert.addr) {
2362 yyerror("address specified "
2363 "for outgoing divert");
2366 bzero(&r.divert.addr,
2367 sizeof(r.divert.addr));
2369 if (!$9.divert.addr) {
2370 yyerror("no address specified "
2371 "for incoming divert");
2374 if ($9.divert.addr->af != r.af) {
2375 yyerror("address family "
2376 "mismatch for divert");
2380 $9.divert.addr->addr.v.a.addr;
2385 expand_rule(&r, $4, $5.host, $7, $8.src_os,
2386 $8.src.host, $8.src.port, $8.dst.host, $8.dst.port,
2387 $9.uid, $9.gid, $9.icmpspec, "");
2392 bzero(&filter_opts, sizeof filter_opts);
2393 filter_opts.rtableid = -1;
2396 { $$ = filter_opts; }
2398 bzero(&filter_opts, sizeof filter_opts);
2399 filter_opts.rtableid = -1;
2404 filter_opts_l : filter_opts_l filter_opt
2408 filter_opt : USER uids {
2409 if (filter_opts.uid)
2410 $2->tail->next = filter_opts.uid;
2411 filter_opts.uid = $2;
2414 if (filter_opts.gid)
2415 $2->tail->next = filter_opts.gid;
2416 filter_opts.gid = $2;
2419 if (filter_opts.marker & FOM_FLAGS) {
2420 yyerror("flags cannot be redefined");
2423 filter_opts.marker |= FOM_FLAGS;
2424 filter_opts.flags.b1 |= $1.b1;
2425 filter_opts.flags.b2 |= $1.b2;
2426 filter_opts.flags.w |= $1.w;
2427 filter_opts.flags.w2 |= $1.w2;
2430 if (filter_opts.marker & FOM_ICMP) {
2431 yyerror("icmp-type cannot be redefined");
2434 filter_opts.marker |= FOM_ICMP;
2435 filter_opts.icmpspec = $1;
2438 if (filter_opts.marker & FOM_TOS) {
2439 yyerror("tos cannot be redefined");
2442 filter_opts.marker |= FOM_TOS;
2443 filter_opts.tos = $2;
2446 if (filter_opts.marker & FOM_KEEP) {
2447 yyerror("modulate or keep cannot be redefined");
2450 filter_opts.marker |= FOM_KEEP;
2451 filter_opts.keep.action = $1.action;
2452 filter_opts.keep.options = $1.options;
2455 filter_opts.fragment = 1;
2458 filter_opts.allowopts = 1;
2461 if (filter_opts.label) {
2462 yyerror("label cannot be redefined");
2465 filter_opts.label = $1;
2468 if (filter_opts.queues.qname) {
2469 yyerror("queue cannot be redefined");
2472 filter_opts.queues = $1;
2475 filter_opts.tag = $2;
2477 | not TAGGED string {
2478 filter_opts.match_tag = $3;
2479 filter_opts.match_tag_not = $1;
2481 | PROBABILITY probability {
2484 p = floor($2 * UINT_MAX + 0.5);
2485 if (p < 0.0 || p > UINT_MAX) {
2486 yyerror("invalid probability: %lf", p);
2489 filter_opts.prob = (u_int32_t)p;
2490 if (filter_opts.prob == 0)
2491 filter_opts.prob = 1;
2494 if ($2 < 0 || $2 > rt_tableid_max()) {
2495 yyerror("invalid rtable id");
2498 filter_opts.rtableid = $2;
2500 | DIVERTTO portplain {
2502 filter_opts.divert.port = $2.a;
2503 if (!filter_opts.divert.port) {
2504 yyerror("invalid divert port: %u", ntohs($2.a));
2509 | DIVERTTO STRING PORT portplain {
2511 if ((filter_opts.divert.addr = host($2)) == NULL) {
2512 yyerror("could not parse divert address: %s",
2521 filter_opts.divert.port = $4.a;
2522 if (!filter_opts.divert.port) {
2523 yyerror("invalid divert port: %u", ntohs($4.a));
2529 yyerror("divert-reply has no meaning in FreeBSD pf(4)");
2532 filter_opts.divert.port = 1; /* some random value */
2537 probability : STRING {
2539 double p = strtod($1, &e);
2546 yyerror("invalid probability: %s", $1);
2559 action : PASS { $$.b1 = PF_PASS; $$.b2 = $$.w = 0; }
2560 | BLOCK blockspec { $$ = $2; $$.b1 = PF_DROP; }
2563 blockspec : /* empty */ {
2564 $$.b2 = blockpolicy;
2565 $$.w = returnicmpdefault;
2566 $$.w2 = returnicmp6default;
2569 $$.b2 = PFRULE_DROP;
2574 $$.b2 = PFRULE_RETURNRST;
2578 | RETURNRST '(' TTL NUMBER ')' {
2579 if ($4 < 0 || $4 > 255) {
2580 yyerror("illegal ttl value %d", $4);
2583 $$.b2 = PFRULE_RETURNRST;
2588 $$.b2 = PFRULE_RETURNICMP;
2589 $$.w = returnicmpdefault;
2590 $$.w2 = returnicmp6default;
2593 $$.b2 = PFRULE_RETURNICMP;
2594 $$.w = returnicmpdefault;
2595 $$.w2 = returnicmp6default;
2597 | RETURNICMP '(' reticmpspec ')' {
2598 $$.b2 = PFRULE_RETURNICMP;
2600 $$.w2 = returnicmpdefault;
2602 | RETURNICMP6 '(' reticmp6spec ')' {
2603 $$.b2 = PFRULE_RETURNICMP;
2604 $$.w = returnicmpdefault;
2607 | RETURNICMP '(' reticmpspec comma reticmp6spec ')' {
2608 $$.b2 = PFRULE_RETURNICMP;
2613 $$.b2 = PFRULE_RETURN;
2614 $$.w = returnicmpdefault;
2615 $$.w2 = returnicmp6default;
2619 reticmpspec : STRING {
2620 if (!($$ = parseicmpspec($1, AF_INET))) {
2629 if ($1 < 0 || $1 > 255) {
2630 yyerror("invalid icmp code %lu", $1);
2633 icmptype = returnicmpdefault >> 8;
2634 $$ = (icmptype << 8 | $1);
2638 reticmp6spec : STRING {
2639 if (!($$ = parseicmpspec($1, AF_INET6))) {
2648 if ($1 < 0 || $1 > 255) {
2649 yyerror("invalid icmp code %lu", $1);
2652 icmptype = returnicmp6default >> 8;
2653 $$ = (icmptype << 8 | $1);
2657 dir : /* empty */ { $$ = PF_INOUT; }
2658 | IN { $$ = PF_IN; }
2659 | OUT { $$ = PF_OUT; }
2662 quick : /* empty */ { $$.quick = 0; }
2663 | QUICK { $$.quick = 1; }
2666 logquick : /* empty */ { $$.log = 0; $$.quick = 0; $$.logif = 0; }
2667 | log { $$ = $1; $$.quick = 0; }
2668 | QUICK { $$.quick = 1; $$.log = 0; $$.logif = 0; }
2669 | log QUICK { $$ = $1; $$.quick = 1; }
2670 | QUICK log { $$ = $2; $$.quick = 1; }
2673 log : LOG { $$.log = PF_LOG; $$.logif = 0; }
2674 | LOG '(' logopts ')' {
2675 $$.log = PF_LOG | $3.log;
2676 $$.logif = $3.logif;
2680 logopts : logopt { $$ = $1; }
2681 | logopts comma logopt {
2682 $$.log = $1.log | $3.log;
2683 $$.logif = $3.logif;
2685 $$.logif = $1.logif;
2689 logopt : ALL { $$.log = PF_LOG_ALL; $$.logif = 0; }
2690 | USER { $$.log = PF_LOG_SOCKET_LOOKUP; $$.logif = 0; }
2691 | GROUP { $$.log = PF_LOG_SOCKET_LOOKUP; $$.logif = 0; }
2697 if (strncmp($2, "pflog", 5)) {
2698 yyerror("%s: should be a pflog interface", $2);
2702 i = strtonum($2 + 5, 0, 255, &errstr);
2704 yyerror("%s: %s", $2, errstr);
2713 interface : /* empty */ { $$ = NULL; }
2714 | ON if_item_not { $$ = $2; }
2715 | ON '{' optnl if_list '}' { $$ = $4; }
2718 if_list : if_item_not optnl { $$ = $1; }
2719 | if_list comma if_item_not optnl {
2720 $1->tail->next = $3;
2726 if_item_not : not if_item { $$ = $2; $$->not = $1; }
2730 struct node_host *n;
2732 $$ = calloc(1, sizeof(struct node_if));
2734 err(1, "if_item: calloc");
2735 if (strlcpy($$->ifname, $1, sizeof($$->ifname)) >=
2736 sizeof($$->ifname)) {
2739 yyerror("interface name too long");
2743 if ((n = ifa_exists($1)) != NULL)
2744 $$->ifa_flags = n->ifa_flags;
2753 af : /* empty */ { $$ = 0; }
2754 | INET { $$ = AF_INET; }
2755 | INET6 { $$ = AF_INET6; }
2758 proto : /* empty */ { $$ = NULL; }
2759 | PROTO proto_item { $$ = $2; }
2760 | PROTO '{' optnl proto_list '}' { $$ = $4; }
2763 proto_list : proto_item optnl { $$ = $1; }
2764 | proto_list comma proto_item optnl {
2765 $1->tail->next = $3;
2771 proto_item : protoval {
2776 yyerror("proto 0 cannot be used");
2779 $$ = calloc(1, sizeof(struct node_proto));
2781 err(1, "proto_item: calloc");
2791 p = getprotobyname($1);
2793 yyerror("unknown protocol %s", $1);
2801 if ($1 < 0 || $1 > 255) {
2802 yyerror("protocol outside range");
2822 os : /* empty */ { $$ = NULL; }
2823 | OS xos { $$ = $2; }
2824 | OS '{' optnl os_list '}' { $$ = $4; }
2828 $$ = calloc(1, sizeof(struct node_os));
2830 err(1, "os: calloc");
2836 os_list : xos optnl { $$ = $1; }
2837 | os_list comma xos optnl {
2838 $1->tail->next = $3;
2844 from : /* empty */ {
2858 if (disallow_urpf_failed($2.host, "\"urpf-failed\" is "
2859 "not permitted in a destination address"))
2865 ipportspec : ipspec {
2869 | ipspec PORT portspec {
2883 ipspec : ANY { $$ = NULL; }
2884 | xhost { $$ = $1; }
2885 | '{' optnl host_list '}' { $$ = $3; }
2888 toipspec : TO ipspec { $$ = $2; }
2889 | /* empty */ { $$ = NULL; }
2892 host_list : ipspec optnl { $$ = $1; }
2893 | host_list comma ipspec optnl {
2896 else if ($1 == NULL)
2899 $1->tail->next = $3;
2900 $1->tail = $3->tail;
2907 struct node_host *n;
2909 for (n = $2; n != NULL; n = n->next)
2914 $$ = calloc(1, sizeof(struct node_host));
2916 err(1, "xhost: calloc");
2917 $$->addr.type = PF_ADDR_NOROUTE;
2923 $$ = calloc(1, sizeof(struct node_host));
2925 err(1, "xhost: calloc");
2926 $$->addr.type = PF_ADDR_URPFFAILED;
2934 if (($$ = host($1)) == NULL) {
2935 /* error. "any" is handled elsewhere */
2937 yyerror("could not parse host specification");
2943 | STRING '-' STRING {
2944 struct node_host *b, *e;
2946 if ((b = host($1)) == NULL || (e = host($3)) == NULL) {
2949 yyerror("could not parse host specification");
2952 if (b->af != e->af ||
2953 b->addr.type != PF_ADDR_ADDRMASK ||
2954 e->addr.type != PF_ADDR_ADDRMASK ||
2955 unmask(&b->addr.v.a.mask, b->af) !=
2956 (b->af == AF_INET ? 32 : 128) ||
2957 unmask(&e->addr.v.a.mask, e->af) !=
2958 (e->af == AF_INET ? 32 : 128) ||
2959 b->next != NULL || b->not ||
2960 e->next != NULL || e->not) {
2965 yyerror("invalid address range");
2968 memcpy(&b->addr.v.a.mask, &e->addr.v.a.addr,
2969 sizeof(b->addr.v.a.mask));
2970 b->addr.type = PF_ADDR_RANGE;
2976 | STRING '/' NUMBER {
2979 if (asprintf(&buf, "%s/%lld", $1, (long long)$3) == -1)
2980 err(1, "host: asprintf");
2982 if (($$ = host(buf)) == NULL) {
2983 /* error. "any" is handled elsewhere */
2985 yyerror("could not parse host specification");
2990 | NUMBER '/' NUMBER {
2993 /* ie. for 10/8 parsing */
2995 if (asprintf(&buf, "%lld/%lld", (long long)$1, (long long)$3) == -1)
2997 if (asprintf(&buf, "%lld/%lld", $1, $3) == -1)
2999 err(1, "host: asprintf");
3000 if (($$ = host(buf)) == NULL) {
3001 /* error. "any" is handled elsewhere */
3003 yyerror("could not parse host specification");
3009 | dynaddr '/' NUMBER {
3010 struct node_host *n;
3012 if ($3 < 0 || $3 > 128) {
3013 yyerror("bit number too big");
3017 for (n = $1; n != NULL; n = n->next)
3021 if (strlen($2) >= PF_TABLE_NAME_SIZE) {
3022 yyerror("table name '%s' too long", $2);
3026 $$ = calloc(1, sizeof(struct node_host));
3028 err(1, "host: calloc");
3029 $$->addr.type = PF_ADDR_TABLE;
3030 if (strlcpy($$->addr.v.tblname, $2,
3031 sizeof($$->addr.v.tblname)) >=
3032 sizeof($$->addr.v.tblname))
3033 errx(1, "host: strlcpy");
3044 if (atoul($1, &ulval) == -1) {
3045 yyerror("%s is not a number", $1);
3054 dynaddr : '(' STRING ')' {
3059 if (!isalpha(op[0])) {
3060 yyerror("invalid interface name '%s'", op);
3064 while ((p = strrchr($2, ':')) != NULL) {
3065 if (!strcmp(p+1, "network"))
3066 flags |= PFI_AFLAG_NETWORK;
3067 else if (!strcmp(p+1, "broadcast"))
3068 flags |= PFI_AFLAG_BROADCAST;
3069 else if (!strcmp(p+1, "peer"))
3070 flags |= PFI_AFLAG_PEER;
3071 else if (!strcmp(p+1, "0"))
3072 flags |= PFI_AFLAG_NOALIAS;
3074 yyerror("interface %s has bad modifier",
3081 if (flags & (flags - 1) & PFI_AFLAG_MODEMASK) {
3083 yyerror("illegal combination of "
3084 "interface modifiers");
3087 $$ = calloc(1, sizeof(struct node_host));
3089 err(1, "address: calloc");
3091 set_ipmask($$, 128);
3092 $$->addr.type = PF_ADDR_DYNIFTL;
3093 $$->addr.iflags = flags;
3094 if (strlcpy($$->addr.v.ifname, $2,
3095 sizeof($$->addr.v.ifname)) >=
3096 sizeof($$->addr.v.ifname)) {
3099 yyerror("interface name too long");
3108 portspec : port_item { $$ = $1; }
3109 | '{' optnl port_list '}' { $$ = $3; }
3112 port_list : port_item optnl { $$ = $1; }
3113 | port_list comma port_item optnl {
3114 $1->tail->next = $3;
3120 port_item : portrange {
3121 $$ = calloc(1, sizeof(struct node_port));
3123 err(1, "port_item: calloc");
3133 | unaryop portrange {
3135 yyerror("':' cannot be used with an other "
3139 $$ = calloc(1, sizeof(struct node_port));
3141 err(1, "port_item: calloc");
3148 | portrange PORTBINARY portrange {
3150 yyerror("':' cannot be used with an other "
3154 $$ = calloc(1, sizeof(struct node_port));
3156 err(1, "port_item: calloc");
3165 portplain : numberstring {
3166 if (parseport($1, &$$, 0) == -1) {
3174 portrange : numberstring {
3175 if (parseport($1, &$$, PPORT_RANGE) == -1) {
3183 uids : uid_item { $$ = $1; }
3184 | '{' optnl uid_list '}' { $$ = $3; }
3187 uid_list : uid_item optnl { $$ = $1; }
3188 | uid_list comma uid_item optnl {
3189 $1->tail->next = $3;
3196 $$ = calloc(1, sizeof(struct node_uid));
3198 err(1, "uid_item: calloc");
3206 if ($2 == UID_MAX && $1 != PF_OP_EQ && $1 != PF_OP_NE) {
3207 yyerror("user unknown requires operator = or "
3211 $$ = calloc(1, sizeof(struct node_uid));
3213 err(1, "uid_item: calloc");
3220 | uid PORTBINARY uid {
3221 if ($1 == UID_MAX || $3 == UID_MAX) {
3222 yyerror("user unknown requires operator = or "
3226 $$ = calloc(1, sizeof(struct node_uid));
3228 err(1, "uid_item: calloc");
3238 if (!strcmp($1, "unknown"))
3243 if ((pw = getpwnam($1)) == NULL) {
3244 yyerror("unknown user %s", $1);
3253 if ($1 < 0 || $1 >= UID_MAX) {
3254 yyerror("illegal uid value %lu", $1);
3261 gids : gid_item { $$ = $1; }
3262 | '{' optnl gid_list '}' { $$ = $3; }
3265 gid_list : gid_item optnl { $$ = $1; }
3266 | gid_list comma gid_item optnl {
3267 $1->tail->next = $3;
3274 $$ = calloc(1, sizeof(struct node_gid));
3276 err(1, "gid_item: calloc");
3284 if ($2 == GID_MAX && $1 != PF_OP_EQ && $1 != PF_OP_NE) {
3285 yyerror("group unknown requires operator = or "
3289 $$ = calloc(1, sizeof(struct node_gid));
3291 err(1, "gid_item: calloc");
3298 | gid PORTBINARY gid {
3299 if ($1 == GID_MAX || $3 == GID_MAX) {
3300 yyerror("group unknown requires operator = or "
3304 $$ = calloc(1, sizeof(struct node_gid));
3306 err(1, "gid_item: calloc");
3316 if (!strcmp($1, "unknown"))
3321 if ((grp = getgrnam($1)) == NULL) {
3322 yyerror("unknown group %s", $1);
3331 if ($1 < 0 || $1 >= GID_MAX) {
3332 yyerror("illegal gid value %lu", $1);
3342 if ((f = parse_flags($1)) < 0) {
3343 yyerror("bad flags %s", $1);
3352 flags : FLAGS flag '/' flag { $$.b1 = $2.b1; $$.b2 = $4.b1; }
3353 | FLAGS '/' flag { $$.b1 = 0; $$.b2 = $3.b1; }
3354 | FLAGS ANY { $$.b1 = 0; $$.b2 = 0; }
3357 icmpspec : ICMPTYPE icmp_item { $$ = $2; }
3358 | ICMPTYPE '{' optnl icmp_list '}' { $$ = $4; }
3359 | ICMP6TYPE icmp6_item { $$ = $2; }
3360 | ICMP6TYPE '{' optnl icmp6_list '}' { $$ = $4; }
3363 icmp_list : icmp_item optnl { $$ = $1; }
3364 | icmp_list comma icmp_item optnl {
3365 $1->tail->next = $3;
3371 icmp6_list : icmp6_item optnl { $$ = $1; }
3372 | icmp6_list comma icmp6_item optnl {
3373 $1->tail->next = $3;
3379 icmp_item : icmptype {
3380 $$ = calloc(1, sizeof(struct node_icmp));
3382 err(1, "icmp_item: calloc");
3385 $$->proto = IPPROTO_ICMP;
3389 | icmptype CODE STRING {
3390 const struct icmpcodeent *p;
3392 if ((p = geticmpcodebyname($1-1, $3, AF_INET)) == NULL) {
3393 yyerror("unknown icmp-code %s", $3);
3399 $$ = calloc(1, sizeof(struct node_icmp));
3401 err(1, "icmp_item: calloc");
3403 $$->code = p->code + 1;
3404 $$->proto = IPPROTO_ICMP;
3408 | icmptype CODE NUMBER {
3409 if ($3 < 0 || $3 > 255) {
3410 yyerror("illegal icmp-code %lu", $3);
3413 $$ = calloc(1, sizeof(struct node_icmp));
3415 err(1, "icmp_item: calloc");
3418 $$->proto = IPPROTO_ICMP;
3424 icmp6_item : icmp6type {
3425 $$ = calloc(1, sizeof(struct node_icmp));
3427 err(1, "icmp_item: calloc");
3430 $$->proto = IPPROTO_ICMPV6;
3434 | icmp6type CODE STRING {
3435 const struct icmpcodeent *p;
3437 if ((p = geticmpcodebyname($1-1, $3, AF_INET6)) == NULL) {
3438 yyerror("unknown icmp6-code %s", $3);
3444 $$ = calloc(1, sizeof(struct node_icmp));
3446 err(1, "icmp_item: calloc");
3448 $$->code = p->code + 1;
3449 $$->proto = IPPROTO_ICMPV6;
3453 | icmp6type CODE NUMBER {
3454 if ($3 < 0 || $3 > 255) {
3455 yyerror("illegal icmp-code %lu", $3);
3458 $$ = calloc(1, sizeof(struct node_icmp));
3460 err(1, "icmp_item: calloc");
3463 $$->proto = IPPROTO_ICMPV6;
3470 const struct icmptypeent *p;
3472 if ((p = geticmptypebyname($1, AF_INET)) == NULL) {
3473 yyerror("unknown icmp-type %s", $1);
3481 if ($1 < 0 || $1 > 255) {
3482 yyerror("illegal icmp-type %lu", $1);
3489 icmp6type : STRING {
3490 const struct icmptypeent *p;
3492 if ((p = geticmptypebyname($1, AF_INET6)) ==
3494 yyerror("unknown icmp6-type %s", $1);
3502 if ($1 < 0 || $1 > 255) {
3503 yyerror("illegal icmp6-type %lu", $1);
3511 if (!strcmp($1, "lowdelay"))
3512 $$ = IPTOS_LOWDELAY;
3513 else if (!strcmp($1, "throughput"))
3514 $$ = IPTOS_THROUGHPUT;
3515 else if (!strcmp($1, "reliability"))
3516 $$ = IPTOS_RELIABILITY;
3517 else if ($1[0] == '0' && $1[1] == 'x')
3518 $$ = strtoul($1, NULL, 16);
3520 $$ = 256; /* flag bad argument */
3521 if ($$ < 0 || $$ > 255) {
3522 yyerror("illegal tos value %s", $1);
3530 if ($$ < 0 || $$ > 255) {
3531 yyerror("illegal tos value %s", $1);
3537 sourcetrack : SOURCETRACK { $$ = PF_SRCTRACK; }
3538 | SOURCETRACK GLOBAL { $$ = PF_SRCTRACK_GLOBAL; }
3539 | SOURCETRACK RULE { $$ = PF_SRCTRACK_RULE; }
3542 statelock : IFBOUND {
3543 $$ = PFRULE_IFBOUND;
3554 | KEEP STATE state_opt_spec {
3555 $$.action = PF_STATE_NORMAL;
3558 | MODULATE STATE state_opt_spec {
3559 $$.action = PF_STATE_MODULATE;
3562 | SYNPROXY STATE state_opt_spec {
3563 $$.action = PF_STATE_SYNPROXY;
3568 flush : /* empty */ { $$ = 0; }
3569 | FLUSH { $$ = PF_FLUSH; }
3571 $$ = PF_FLUSH | PF_FLUSH_GLOBAL;
3575 state_opt_spec : '(' state_opt_list ')' { $$ = $2; }
3576 | /* empty */ { $$ = NULL; }
3579 state_opt_list : state_opt_item { $$ = $1; }
3580 | state_opt_list comma state_opt_item {
3581 $1->tail->next = $3;
3587 state_opt_item : MAXIMUM NUMBER {
3588 if ($2 < 0 || $2 > UINT_MAX) {
3589 yyerror("only positive values permitted");
3592 $$ = calloc(1, sizeof(struct node_state_opt));
3594 err(1, "state_opt_item: calloc");
3595 $$->type = PF_STATE_OPT_MAX;
3596 $$->data.max_states = $2;
3601 $$ = calloc(1, sizeof(struct node_state_opt));
3603 err(1, "state_opt_item: calloc");
3604 $$->type = PF_STATE_OPT_NOSYNC;
3608 | MAXSRCSTATES NUMBER {
3609 if ($2 < 0 || $2 > UINT_MAX) {
3610 yyerror("only positive values permitted");
3613 $$ = calloc(1, sizeof(struct node_state_opt));
3615 err(1, "state_opt_item: calloc");
3616 $$->type = PF_STATE_OPT_MAX_SRC_STATES;
3617 $$->data.max_src_states = $2;
3621 | MAXSRCCONN NUMBER {
3622 if ($2 < 0 || $2 > UINT_MAX) {
3623 yyerror("only positive values permitted");
3626 $$ = calloc(1, sizeof(struct node_state_opt));
3628 err(1, "state_opt_item: calloc");
3629 $$->type = PF_STATE_OPT_MAX_SRC_CONN;
3630 $$->data.max_src_conn = $2;
3634 | MAXSRCCONNRATE NUMBER '/' NUMBER {
3635 if ($2 < 0 || $2 > UINT_MAX ||
3636 $4 < 0 || $4 > UINT_MAX) {
3637 yyerror("only positive values permitted");
3640 $$ = calloc(1, sizeof(struct node_state_opt));
3642 err(1, "state_opt_item: calloc");
3643 $$->type = PF_STATE_OPT_MAX_SRC_CONN_RATE;
3644 $$->data.max_src_conn_rate.limit = $2;
3645 $$->data.max_src_conn_rate.seconds = $4;
3649 | OVERLOAD '<' STRING '>' flush {
3650 if (strlen($3) >= PF_TABLE_NAME_SIZE) {
3651 yyerror("table name '%s' too long", $3);
3655 $$ = calloc(1, sizeof(struct node_state_opt));
3657 err(1, "state_opt_item: calloc");
3658 if (strlcpy($$->data.overload.tblname, $3,
3659 PF_TABLE_NAME_SIZE) >= PF_TABLE_NAME_SIZE)
3660 errx(1, "state_opt_item: strlcpy");
3662 $$->type = PF_STATE_OPT_OVERLOAD;
3663 $$->data.overload.flush = $5;
3667 | MAXSRCNODES NUMBER {
3668 if ($2 < 0 || $2 > UINT_MAX) {
3669 yyerror("only positive values permitted");
3672 $$ = calloc(1, sizeof(struct node_state_opt));
3674 err(1, "state_opt_item: calloc");
3675 $$->type = PF_STATE_OPT_MAX_SRC_NODES;
3676 $$->data.max_src_nodes = $2;
3681 $$ = calloc(1, sizeof(struct node_state_opt));
3683 err(1, "state_opt_item: calloc");
3684 $$->type = PF_STATE_OPT_SRCTRACK;
3685 $$->data.src_track = $1;
3690 $$ = calloc(1, sizeof(struct node_state_opt));
3692 err(1, "state_opt_item: calloc");
3693 $$->type = PF_STATE_OPT_STATELOCK;
3694 $$->data.statelock = $1;
3699 $$ = calloc(1, sizeof(struct node_state_opt));
3701 err(1, "state_opt_item: calloc");
3702 $$->type = PF_STATE_OPT_SLOPPY;
3709 if ($2 < 0 || $2 > UINT_MAX) {
3710 yyerror("only positive values permitted");
3713 for (i = 0; pf_timeouts[i].name &&
3714 strcmp(pf_timeouts[i].name, $1); ++i)
3716 if (!pf_timeouts[i].name) {
3717 yyerror("illegal timeout name %s", $1);
3721 if (strchr(pf_timeouts[i].name, '.') == NULL) {
3722 yyerror("illegal state timeout %s", $1);
3727 $$ = calloc(1, sizeof(struct node_state_opt));
3729 err(1, "state_opt_item: calloc");
3730 $$->type = PF_STATE_OPT_TIMEOUT;
3731 $$->data.timeout.number = pf_timeouts[i].timeout;
3732 $$->data.timeout.seconds = $2;
3738 label : LABEL STRING {
3743 qname : QUEUE STRING {
3747 | QUEUE '(' STRING ')' {
3751 | QUEUE '(' STRING comma STRING ')' {
3757 no : /* empty */ { $$ = 0; }
3761 portstar : numberstring {
3762 if (parseport($1, &$$, PPORT_RANGE|PPORT_STAR) == -1) {
3770 redirspec : host { $$ = $1; }
3771 | '{' optnl redir_host_list '}' { $$ = $3; }
3774 redir_host_list : host optnl { $$ = $1; }
3775 | redir_host_list comma host optnl {
3776 $1->tail->next = $3;
3777 $1->tail = $3->tail;
3782 redirpool : /* empty */ { $$ = NULL; }
3784 $$ = calloc(1, sizeof(struct redirection));
3786 err(1, "redirection: calloc");
3788 $$->rport.a = $$->rport.b = $$->rport.t = 0;
3790 | ARROW redirspec PORT portstar {
3791 $$ = calloc(1, sizeof(struct redirection));
3793 err(1, "redirection: calloc");
3799 hashkey : /* empty */
3801 $$ = calloc(1, sizeof(struct pf_poolhashkey));
3803 err(1, "hashkey: calloc");
3804 $$->key32[0] = arc4random();
3805 $$->key32[1] = arc4random();
3806 $$->key32[2] = arc4random();
3807 $$->key32[3] = arc4random();
3811 if (!strncmp($1, "0x", 2)) {
3812 if (strlen($1) != 34) {
3814 yyerror("hex key must be 128 bits "
3815 "(32 hex digits) long");
3818 $$ = calloc(1, sizeof(struct pf_poolhashkey));
3820 err(1, "hashkey: calloc");
3822 if (sscanf($1, "0x%8x%8x%8x%8x",
3823 &$$->key32[0], &$$->key32[1],
3824 &$$->key32[2], &$$->key32[3]) != 4) {
3827 yyerror("invalid hex key");
3833 $$ = calloc(1, sizeof(struct pf_poolhashkey));
3835 err(1, "hashkey: calloc");
3837 MD5Update(&context, (unsigned char *)$1,
3839 MD5Final((unsigned char *)$$, &context);
3840 HTONL($$->key32[0]);
3841 HTONL($$->key32[1]);
3842 HTONL($$->key32[2]);
3843 HTONL($$->key32[3]);
3849 pool_opts : { bzero(&pool_opts, sizeof pool_opts); }
3853 bzero(&pool_opts, sizeof pool_opts);
3858 pool_opts_l : pool_opts_l pool_opt
3862 pool_opt : BITMASK {
3863 if (pool_opts.type) {
3864 yyerror("pool type cannot be redefined");
3867 pool_opts.type = PF_POOL_BITMASK;
3870 if (pool_opts.type) {
3871 yyerror("pool type cannot be redefined");
3874 pool_opts.type = PF_POOL_RANDOM;
3876 | SOURCEHASH hashkey {
3877 if (pool_opts.type) {
3878 yyerror("pool type cannot be redefined");
3881 pool_opts.type = PF_POOL_SRCHASH;
3885 if (pool_opts.type) {
3886 yyerror("pool type cannot be redefined");
3889 pool_opts.type = PF_POOL_ROUNDROBIN;
3892 if (pool_opts.staticport) {
3893 yyerror("static-port cannot be redefined");
3896 pool_opts.staticport = 1;
3899 if (filter_opts.marker & POM_STICKYADDRESS) {
3900 yyerror("sticky-address cannot be redefined");
3903 pool_opts.marker |= POM_STICKYADDRESS;
3904 pool_opts.opts |= PF_POOL_STICKYADDR;
3908 redirection : /* empty */ { $$ = NULL; }
3910 $$ = calloc(1, sizeof(struct redirection));
3912 err(1, "redirection: calloc");
3914 $$->rport.a = $$->rport.b = $$->rport.t = 0;
3916 | ARROW host PORT portstar {
3917 $$ = calloc(1, sizeof(struct redirection));
3919 err(1, "redirection: calloc");
3925 natpasslog : /* empty */ { $$.b1 = $$.b2 = 0; $$.w2 = 0; }
3926 | PASS { $$.b1 = 1; $$.b2 = 0; $$.w2 = 0; }
3927 | PASS log { $$.b1 = 1; $$.b2 = $2.log; $$.w2 = $2.logif; }
3928 | log { $$.b1 = 0; $$.b2 = $1.log; $$.w2 = $1.logif; }
3931 nataction : no NAT natpasslog {
3933 yyerror("\"pass\" not valid with \"no\"");
3944 | no RDR natpasslog {
3946 yyerror("\"pass\" not valid with \"no\"");
3959 natrule : nataction interface af proto fromto tag tagged rtable
3964 if (check_rulestate(PFCTL_STATE_NAT))
3967 memset(&r, 0, sizeof(r));
3976 if ($5.src.host && $5.src.host->af &&
3977 !$5.src.host->ifindex)
3978 r.af = $5.src.host->af;
3979 else if ($5.dst.host && $5.dst.host->af &&
3980 !$5.dst.host->ifindex)
3981 r.af = $5.dst.host->af;
3985 if (strlcpy(r.tagname, $6, PF_TAG_NAME_SIZE) >=
3987 yyerror("tag too long, max %u chars",
3988 PF_TAG_NAME_SIZE - 1);
3993 if (strlcpy(r.match_tagname, $7.name,
3994 PF_TAG_NAME_SIZE) >= PF_TAG_NAME_SIZE) {
3995 yyerror("tag too long, max %u chars",
3996 PF_TAG_NAME_SIZE - 1);
3999 r.match_tag_not = $7.neg;
4002 if (r.action == PF_NONAT || r.action == PF_NORDR) {
4004 yyerror("translation rule with 'no' "
4005 "does not need '->'");
4009 if ($9 == NULL || $9->host == NULL) {
4010 yyerror("translation rule requires '-> "
4014 if (!r.af && ! $9->host->ifindex)
4015 r.af = $9->host->af;
4017 remove_invalid_hosts(&$9->host, &r.af);
4018 if (invalid_redirect($9->host, r.af))
4020 if (check_netmask($9->host, r.af))
4023 r.rpool.proxy_port[0] = ntohs($9->rport.a);
4027 if (!$9->rport.b && $9->rport.t &&
4028 $5.dst.port != NULL) {
4029 r.rpool.proxy_port[1] =
4030 ntohs($9->rport.a) +
4032 $5.dst.port->port[1]) -
4034 $5.dst.port->port[0]));
4036 r.rpool.proxy_port[1] =
4040 r.rpool.proxy_port[1] =
4042 if (!r.rpool.proxy_port[0] &&
4043 !r.rpool.proxy_port[1]) {
4044 r.rpool.proxy_port[0] =
4045 PF_NAT_PROXY_PORT_LOW;
4046 r.rpool.proxy_port[1] =
4047 PF_NAT_PROXY_PORT_HIGH;
4048 } else if (!r.rpool.proxy_port[1])
4049 r.rpool.proxy_port[1] =
4050 r.rpool.proxy_port[0];
4056 r.rpool.opts = $10.type;
4057 if ((r.rpool.opts & PF_POOL_TYPEMASK) ==
4058 PF_POOL_NONE && ($9->host->next != NULL ||
4059 $9->host->addr.type == PF_ADDR_TABLE ||
4060 DYNIF_MULTIADDR($9->host->addr)))
4061 r.rpool.opts = PF_POOL_ROUNDROBIN;
4062 if ((r.rpool.opts & PF_POOL_TYPEMASK) !=
4063 PF_POOL_ROUNDROBIN &&
4064 disallow_table($9->host, "tables are only "
4065 "supported in round-robin redirection "
4068 if ((r.rpool.opts & PF_POOL_TYPEMASK) !=
4069 PF_POOL_ROUNDROBIN &&
4070 disallow_alias($9->host, "interface (%s) "
4071 "is only supported in round-robin "
4072 "redirection pools"))
4074 if ($9->host->next != NULL) {
4075 if ((r.rpool.opts & PF_POOL_TYPEMASK) !=
4076 PF_POOL_ROUNDROBIN) {
4077 yyerror("only round-robin "
4078 "valid for multiple "
4079 "redirection addresses");
4085 if ($10.key != NULL)
4086 memcpy(&r.rpool.key, $10.key,
4087 sizeof(struct pf_poolhashkey));
4090 r.rpool.opts |= $10.opts;
4092 if ($10.staticport) {
4093 if (r.action != PF_NAT) {
4094 yyerror("the 'static-port' option is "
4095 "only valid with nat rules");
4098 if (r.rpool.proxy_port[0] !=
4099 PF_NAT_PROXY_PORT_LOW &&
4100 r.rpool.proxy_port[1] !=
4101 PF_NAT_PROXY_PORT_HIGH) {
4102 yyerror("the 'static-port' option can't"
4103 " be used when specifying a port"
4107 r.rpool.proxy_port[0] = 0;
4108 r.rpool.proxy_port[1] = 0;
4111 expand_rule(&r, $2, $9 == NULL ? NULL : $9->host, $4,
4112 $5.src_os, $5.src.host, $5.src.port, $5.dst.host,
4113 $5.dst.port, 0, 0, 0, "");
4118 binatrule : no BINAT natpasslog interface af proto FROM host toipspec tag
4119 tagged rtable redirection
4121 struct pf_rule binat;
4122 struct pf_pooladdr *pa;
4124 if (check_rulestate(PFCTL_STATE_NAT))
4126 if (disallow_urpf_failed($9, "\"urpf-failed\" is not "
4127 "permitted as a binat destination"))
4130 memset(&binat, 0, sizeof(binat));
4133 yyerror("\"pass\" not valid with \"no\"");
4137 binat.action = PF_NOBINAT;
4139 binat.action = PF_BINAT;
4140 binat.natpass = $3.b1;
4142 binat.logif = $3.w2;
4144 if (!binat.af && $8 != NULL && $8->af)
4146 if (!binat.af && $9 != NULL && $9->af)
4149 if (!binat.af && $13 != NULL && $13->host)
4150 binat.af = $13->host->af;
4152 yyerror("address family (inet/inet6) "
4158 memcpy(binat.ifname, $4->ifname,
4159 sizeof(binat.ifname));
4160 binat.ifnot = $4->not;
4165 if (strlcpy(binat.tagname, $10,
4166 PF_TAG_NAME_SIZE) >= PF_TAG_NAME_SIZE) {
4167 yyerror("tag too long, max %u chars",
4168 PF_TAG_NAME_SIZE - 1);
4172 if (strlcpy(binat.match_tagname, $11.name,
4173 PF_TAG_NAME_SIZE) >= PF_TAG_NAME_SIZE) {
4174 yyerror("tag too long, max %u chars",
4175 PF_TAG_NAME_SIZE - 1);
4178 binat.match_tag_not = $11.neg;
4179 binat.rtableid = $12;
4182 binat.proto = $6->proto;
4186 if ($8 != NULL && disallow_table($8, "invalid use of "
4187 "table <%s> as the source address of a binat rule"))
4189 if ($8 != NULL && disallow_alias($8, "invalid use of "
4190 "interface (%s) as the source address of a binat "
4193 if ($13 != NULL && $13->host != NULL && disallow_table(
4194 $13->host, "invalid use of table <%s> as the "
4195 "redirect address of a binat rule"))
4197 if ($13 != NULL && $13->host != NULL && disallow_alias(
4198 $13->host, "invalid use of interface (%s) as the "
4199 "redirect address of a binat rule"))
4204 yyerror("multiple binat ip addresses");
4207 if ($8->addr.type == PF_ADDR_DYNIFTL)
4209 if ($8->af != binat.af) {
4210 yyerror("binat ip versions must match");
4213 if (check_netmask($8, binat.af))
4215 memcpy(&binat.src.addr, &$8->addr,
4216 sizeof(binat.src.addr));
4221 yyerror("multiple binat ip addresses");
4224 if ($9->af != binat.af && $9->af) {
4225 yyerror("binat ip versions must match");
4228 if (check_netmask($9, binat.af))
4230 memcpy(&binat.dst.addr, &$9->addr,
4231 sizeof(binat.dst.addr));
4232 binat.dst.neg = $9->not;
4236 if (binat.action == PF_NOBINAT) {
4238 yyerror("'no binat' rule does not need"
4243 if ($13 == NULL || $13->host == NULL) {
4244 yyerror("'binat' rule requires"
4249 remove_invalid_hosts(&$13->host, &binat.af);
4250 if (invalid_redirect($13->host, binat.af))
4252 if ($13->host->next != NULL) {
4253 yyerror("binat rule must redirect to "
4254 "a single address");
4257 if (check_netmask($13->host, binat.af))
4260 if (!PF_AZERO(&binat.src.addr.v.a.mask,
4262 !PF_AEQ(&binat.src.addr.v.a.mask,
4263 &$13->host->addr.v.a.mask, binat.af)) {
4264 yyerror("'binat' source mask and "
4265 "redirect mask must be the same");
4269 TAILQ_INIT(&binat.rpool.list);
4270 pa = calloc(1, sizeof(struct pf_pooladdr));
4272 err(1, "binat: calloc");
4273 pa->addr = $13->host->addr;
4275 TAILQ_INSERT_TAIL(&binat.rpool.list,
4281 pfctl_add_rule(pf, &binat, "");
4285 tag : /* empty */ { $$ = NULL; }
4286 | TAG STRING { $$ = $2; }
4289 tagged : /* empty */ { $$.neg = 0; $$.name = NULL; }
4290 | not TAGGED string { $$.neg = $1; $$.name = $3; }
4293 rtable : /* empty */ { $$ = -1; }
4295 if ($2 < 0 || $2 > rt_tableid_max()) {
4296 yyerror("invalid rtable id");
4303 route_host : STRING {
4304 $$ = calloc(1, sizeof(struct node_host));
4306 err(1, "route_host: calloc");
4308 set_ipmask($$, 128);
4312 | '(' STRING host ')' {
4313 struct node_host *n;
4316 for (n = $3; n != NULL; n = n->next)
4321 route_host_list : route_host optnl { $$ = $1; }
4322 | route_host_list comma route_host optnl {
4325 if ($1->af != $3->af) {
4326 yyerror("all pool addresses must be in the "
4327 "same address family");
4330 $1->tail->next = $3;
4331 $1->tail = $3->tail;
4336 routespec : route_host { $$ = $1; }
4337 | '{' optnl route_host_list '}' { $$ = $3; }
4340 route : /* empty */ {
4347 $$.rt = PF_FASTROUTE;
4350 | ROUTETO routespec pool_opts {
4353 $$.pool_opts = $3.type | $3.opts;
4357 | REPLYTO routespec pool_opts {
4360 $$.pool_opts = $3.type | $3.opts;
4364 | DUPTO routespec pool_opts {
4367 $$.pool_opts = $3.type | $3.opts;
4373 timeout_spec : STRING NUMBER
4375 if (check_rulestate(PFCTL_STATE_OPTION)) {
4379 if ($2 < 0 || $2 > UINT_MAX) {
4380 yyerror("only positive values permitted");
4383 if (pfctl_set_timeout(pf, $1, $2, 0) != 0) {
4384 yyerror("unknown timeout %s", $1);
4391 if (check_rulestate(PFCTL_STATE_OPTION))
4393 if ($2 < 0 || $2 > UINT_MAX) {
4394 yyerror("only positive values permitted");
4397 if (pfctl_set_timeout(pf, "interval", $2, 0) != 0)
4402 timeout_list : timeout_list comma timeout_spec optnl
4403 | timeout_spec optnl
4406 limit_spec : STRING NUMBER
4408 if (check_rulestate(PFCTL_STATE_OPTION)) {
4412 if ($2 < 0 || $2 > UINT_MAX) {
4413 yyerror("only positive values permitted");
4416 if (pfctl_set_limit(pf, $1, $2) != 0) {
4417 yyerror("unable to set limit %s %u", $1, $2);
4425 limit_list : limit_list comma limit_spec optnl
4433 yesno : NO { $$ = 0; }
4435 if (!strcmp($1, "yes"))
4438 yyerror("invalid value '%s', expected 'yes' "
4447 unaryop : '=' { $$ = PF_OP_EQ; }
4448 | '!' '=' { $$ = PF_OP_NE; }
4449 | '<' '=' { $$ = PF_OP_LE; }
4450 | '<' { $$ = PF_OP_LT; }
4451 | '>' '=' { $$ = PF_OP_GE; }
4452 | '>' { $$ = PF_OP_GT; }
4458 yyerror(const char *fmt, ...)
4464 fprintf(stderr, "%s:%d: ", file->name, yylval.lineno);
4465 vfprintf(stderr, fmt, ap);
4466 fprintf(stderr, "\n");
4472 disallow_table(struct node_host *h, const char *fmt)
4474 for (; h != NULL; h = h->next)
4475 if (h->addr.type == PF_ADDR_TABLE) {
4476 yyerror(fmt, h->addr.v.tblname);
4483 disallow_urpf_failed(struct node_host *h, const char *fmt)
4485 for (; h != NULL; h = h->next)
4486 if (h->addr.type == PF_ADDR_URPFFAILED) {
4494 disallow_alias(struct node_host *h, const char *fmt)
4496 for (; h != NULL; h = h->next)
4497 if (DYNIF_MULTIADDR(h->addr)) {
4498 yyerror(fmt, h->addr.v.tblname);
4505 rule_consistent(struct pf_rule *r, int anchor_call)
4509 switch (r->action) {
4514 problems = filter_consistent(r, anchor_call);
4518 problems = nat_consistent(r);
4522 problems = rdr_consistent(r);
4533 filter_consistent(struct pf_rule *r, int anchor_call)
4537 if (r->proto != IPPROTO_TCP && r->proto != IPPROTO_UDP &&
4538 (r->src.port_op || r->dst.port_op)) {
4539 yyerror("port only applies to tcp/udp");
4542 if (r->proto != IPPROTO_ICMP && r->proto != IPPROTO_ICMPV6 &&
4543 (r->type || r->code)) {
4544 yyerror("icmp-type/code only applies to icmp");
4547 if (!r->af && (r->type || r->code)) {
4548 yyerror("must indicate address family with icmp-type/code");
4551 if (r->overload_tblname[0] &&
4552 r->max_src_conn == 0 && r->max_src_conn_rate.seconds == 0) {
4553 yyerror("'overload' requires 'max-src-conn' "
4554 "or 'max-src-conn-rate'");
4557 if ((r->proto == IPPROTO_ICMP && r->af == AF_INET6) ||
4558 (r->proto == IPPROTO_ICMPV6 && r->af == AF_INET)) {
4559 yyerror("proto %s doesn't match address family %s",
4560 r->proto == IPPROTO_ICMP ? "icmp" : "icmp6",
4561 r->af == AF_INET ? "inet" : "inet6");
4564 if (r->allow_opts && r->action != PF_PASS) {
4565 yyerror("allow-opts can only be specified for pass rules");
4568 if (r->rule_flag & PFRULE_FRAGMENT && (r->src.port_op ||
4569 r->dst.port_op || r->flagset || r->type || r->code)) {
4570 yyerror("fragments can be filtered only on IP header fields");
4573 if (r->rule_flag & PFRULE_RETURNRST && r->proto != IPPROTO_TCP) {
4574 yyerror("return-rst can only be applied to TCP rules");
4577 if (r->max_src_nodes && !(r->rule_flag & PFRULE_RULESRCTRACK)) {
4578 yyerror("max-src-nodes requires 'source-track rule'");
4581 if (r->action == PF_DROP && r->keep_state) {
4582 yyerror("keep state on block rules doesn't make sense");
4585 if (r->rule_flag & PFRULE_STATESLOPPY &&
4586 (r->keep_state == PF_STATE_MODULATE ||
4587 r->keep_state == PF_STATE_SYNPROXY)) {
4588 yyerror("sloppy state matching cannot be used with "
4589 "synproxy state or modulate state");
4596 nat_consistent(struct pf_rule *r)
4598 return (0); /* yeah! */
4602 rdr_consistent(struct pf_rule *r)
4606 if (r->proto != IPPROTO_TCP && r->proto != IPPROTO_UDP) {
4607 if (r->src.port_op) {
4608 yyerror("src port only applies to tcp/udp");
4611 if (r->dst.port_op) {
4612 yyerror("dst port only applies to tcp/udp");
4615 if (r->rpool.proxy_port[0]) {
4616 yyerror("rpool port only applies to tcp/udp");
4620 if (r->dst.port_op &&
4621 r->dst.port_op != PF_OP_EQ && r->dst.port_op != PF_OP_RRG) {
4622 yyerror("invalid port operator for rdr destination port");
4629 process_tabledef(char *name, struct table_opts *opts)
4631 struct pfr_buffer ab;
4632 struct node_tinit *ti;
4634 bzero(&ab, sizeof(ab));
4635 ab.pfrb_type = PFRB_ADDRS;
4636 SIMPLEQ_FOREACH(ti, &opts->init_nodes, entries) {
4638 if (pfr_buf_load(&ab, ti->file, 0, append_addr)) {
4640 yyerror("cannot load \"%s\": %s",
4641 ti->file, strerror(errno));
4643 yyerror("file \"%s\" contains bad data",
4648 if (append_addr_host(&ab, ti->host, 0, 0)) {
4649 yyerror("cannot create address buffer: %s",
4654 if (pf->opts & PF_OPT_VERBOSE)
4655 print_tabledef(name, opts->flags, opts->init_addr,
4657 if (!(pf->opts & PF_OPT_NOACTION) &&
4658 pfctl_define_table(name, opts->flags, opts->init_addr,
4659 pf->anchor->name, &ab, pf->anchor->ruleset.tticket)) {
4660 yyerror("cannot define table %s: %s", name,
4661 pfr_strerror(errno));
4677 /* macro gore, but you should've seen the prior indentation nightmare... */
4679 #define FREE_LIST(T,r) \
4682 while (node != NULL) { \
4684 node = node->next; \
4689 #define LOOP_THROUGH(T,n,r,C) \
4693 r = calloc(1, sizeof(T)); \
4695 err(1, "LOOP: calloc"); \
4699 while (n != NULL) { \
4708 expand_label_str(char *label, size_t len, const char *srch, const char *repl)
4713 if ((tmp = calloc(1, len)) == NULL)
4714 err(1, "expand_label_str: calloc");
4716 while ((q = strstr(p, srch)) != NULL) {
4718 if ((strlcat(tmp, p, len) >= len) ||
4719 (strlcat(tmp, repl, len) >= len))
4720 errx(1, "expand_label: label too long");
4724 if (strlcat(tmp, p, len) >= len)
4725 errx(1, "expand_label: label too long");
4726 strlcpy(label, tmp, len); /* always fits */
4731 expand_label_if(const char *name, char *label, size_t len, const char *ifname)
4733 if (strstr(label, name) != NULL) {
4735 expand_label_str(label, len, name, "any");
4737 expand_label_str(label, len, name, ifname);
4742 expand_label_addr(const char *name, char *label, size_t len, sa_family_t af,
4743 struct node_host *h)
4745 char tmp[64], tmp_not[66];
4747 if (strstr(label, name) != NULL) {
4748 switch (h->addr.type) {
4749 case PF_ADDR_DYNIFTL:
4750 snprintf(tmp, sizeof(tmp), "(%s)", h->addr.v.ifname);
4753 snprintf(tmp, sizeof(tmp), "<%s>", h->addr.v.tblname);
4755 case PF_ADDR_NOROUTE:
4756 snprintf(tmp, sizeof(tmp), "no-route");
4758 case PF_ADDR_URPFFAILED:
4759 snprintf(tmp, sizeof(tmp), "urpf-failed");
4761 case PF_ADDR_ADDRMASK:
4762 if (!af || (PF_AZERO(&h->addr.v.a.addr, af) &&
4763 PF_AZERO(&h->addr.v.a.mask, af)))
4764 snprintf(tmp, sizeof(tmp), "any");
4769 if (inet_ntop(af, &h->addr.v.a.addr, a,
4771 snprintf(tmp, sizeof(tmp), "?");
4773 bits = unmask(&h->addr.v.a.mask, af);
4774 if ((af == AF_INET && bits < 32) ||
4775 (af == AF_INET6 && bits < 128))
4776 snprintf(tmp, sizeof(tmp),
4779 snprintf(tmp, sizeof(tmp),
4785 snprintf(tmp, sizeof(tmp), "?");
4790 snprintf(tmp_not, sizeof(tmp_not), "! %s", tmp);
4791 expand_label_str(label, len, name, tmp_not);
4793 expand_label_str(label, len, name, tmp);
4798 expand_label_port(const char *name, char *label, size_t len,
4799 struct node_port *port)
4801 char a1[6], a2[6], op[13] = "";
4803 if (strstr(label, name) != NULL) {
4804 snprintf(a1, sizeof(a1), "%u", ntohs(port->port[0]));
4805 snprintf(a2, sizeof(a2), "%u", ntohs(port->port[1]));
4808 else if (port->op == PF_OP_IRG)
4809 snprintf(op, sizeof(op), "%s><%s", a1, a2);
4810 else if (port->op == PF_OP_XRG)
4811 snprintf(op, sizeof(op), "%s<>%s", a1, a2);
4812 else if (port->op == PF_OP_EQ)
4813 snprintf(op, sizeof(op), "%s", a1);
4814 else if (port->op == PF_OP_NE)
4815 snprintf(op, sizeof(op), "!=%s", a1);
4816 else if (port->op == PF_OP_LT)
4817 snprintf(op, sizeof(op), "<%s", a1);
4818 else if (port->op == PF_OP_LE)
4819 snprintf(op, sizeof(op), "<=%s", a1);
4820 else if (port->op == PF_OP_GT)
4821 snprintf(op, sizeof(op), ">%s", a1);
4822 else if (port->op == PF_OP_GE)
4823 snprintf(op, sizeof(op), ">=%s", a1);
4824 expand_label_str(label, len, name, op);
4829 expand_label_proto(const char *name, char *label, size_t len, u_int8_t proto)
4831 struct protoent *pe;
4834 if (strstr(label, name) != NULL) {
4835 pe = getprotobynumber(proto);
4837 expand_label_str(label, len, name, pe->p_name);
4839 snprintf(n, sizeof(n), "%u", proto);
4840 expand_label_str(label, len, name, n);
4846 expand_label_nr(const char *name, char *label, size_t len)
4850 if (strstr(label, name) != NULL) {
4851 snprintf(n, sizeof(n), "%u", pf->anchor->match);
4852 expand_label_str(label, len, name, n);
4857 expand_label(char *label, size_t len, const char *ifname, sa_family_t af,
4858 struct node_host *src_host, struct node_port *src_port,
4859 struct node_host *dst_host, struct node_port *dst_port,
4862 expand_label_if("$if", label, len, ifname);
4863 expand_label_addr("$srcaddr", label, len, af, src_host);
4864 expand_label_addr("$dstaddr", label, len, af, dst_host);
4865 expand_label_port("$srcport", label, len, src_port);
4866 expand_label_port("$dstport", label, len, dst_port);
4867 expand_label_proto("$proto", label, len, proto);
4868 expand_label_nr("$nr", label, len);
4872 expand_altq(struct pf_altq *a, struct node_if *interfaces,
4873 struct node_queue *nqueues, struct node_queue_bw bwspec,
4874 struct node_queue_opt *opts)
4876 struct pf_altq pa, pb;
4877 char qname[PF_QNAME_SIZE];
4878 struct node_queue *n;
4879 struct node_queue_bw bw;
4882 if ((pf->loadopt & PFCTL_FLAG_ALTQ) == 0) {
4883 FREE_LIST(struct node_if, interfaces);
4885 FREE_LIST(struct node_queue, nqueues);
4889 LOOP_THROUGH(struct node_if, interface, interfaces,
4890 memcpy(&pa, a, sizeof(struct pf_altq));
4891 if (strlcpy(pa.ifname, interface->ifname,
4892 sizeof(pa.ifname)) >= sizeof(pa.ifname))
4893 errx(1, "expand_altq: strlcpy");
4895 if (interface->not) {
4896 yyerror("altq on ! <interface> is not supported");
4899 if (eval_pfaltq(pf, &pa, &bwspec, opts))
4902 if (pfctl_add_altq(pf, &pa))
4905 if (pf->opts & PF_OPT_VERBOSE) {
4906 print_altq(&pf->paltq->altq, 0,
4908 if (nqueues && nqueues->tail) {
4910 LOOP_THROUGH(struct node_queue, queue,
4920 if (pa.scheduler == ALTQT_CBQ ||
4921 pa.scheduler == ALTQT_HFSC) {
4922 /* now create a root queue */
4923 memset(&pb, 0, sizeof(struct pf_altq));
4924 if (strlcpy(qname, "root_", sizeof(qname)) >=
4926 errx(1, "expand_altq: strlcpy");
4927 if (strlcat(qname, interface->ifname,
4928 sizeof(qname)) >= sizeof(qname))
4929 errx(1, "expand_altq: strlcat");
4930 if (strlcpy(pb.qname, qname,
4931 sizeof(pb.qname)) >= sizeof(pb.qname))
4932 errx(1, "expand_altq: strlcpy");
4933 if (strlcpy(pb.ifname, interface->ifname,
4934 sizeof(pb.ifname)) >= sizeof(pb.ifname))
4935 errx(1, "expand_altq: strlcpy");
4936 pb.qlimit = pa.qlimit;
4937 pb.scheduler = pa.scheduler;
4938 bw.bw_absolute = pa.ifbandwidth;
4940 if (eval_pfqueue(pf, &pb, &bw, opts))
4943 if (pfctl_add_altq(pf, &pb))
4947 LOOP_THROUGH(struct node_queue, queue, nqueues,
4948 n = calloc(1, sizeof(struct node_queue));
4950 err(1, "expand_altq: calloc");
4951 if (pa.scheduler == ALTQT_CBQ ||
4952 pa.scheduler == ALTQT_HFSC)
4953 if (strlcpy(n->parent, qname,
4954 sizeof(n->parent)) >=
4956 errx(1, "expand_altq: strlcpy");
4957 if (strlcpy(n->queue, queue->queue,
4958 sizeof(n->queue)) >= sizeof(n->queue))
4959 errx(1, "expand_altq: strlcpy");
4960 if (strlcpy(n->ifname, interface->ifname,
4961 sizeof(n->ifname)) >= sizeof(n->ifname))
4962 errx(1, "expand_altq: strlcpy");
4963 n->scheduler = pa.scheduler;
4969 queues->tail->next = n;
4975 FREE_LIST(struct node_if, interfaces);
4977 FREE_LIST(struct node_queue, nqueues);
4983 expand_queue(struct pf_altq *a, struct node_if *interfaces,
4984 struct node_queue *nqueues, struct node_queue_bw bwspec,
4985 struct node_queue_opt *opts)
4987 struct node_queue *n, *nq;
4992 if ((pf->loadopt & PFCTL_FLAG_ALTQ) == 0) {
4993 FREE_LIST(struct node_queue, nqueues);
4997 if (queues == NULL) {
4998 yyerror("queue %s has no parent", a->qname);
4999 FREE_LIST(struct node_queue, nqueues);
5003 LOOP_THROUGH(struct node_if, interface, interfaces,
5004 LOOP_THROUGH(struct node_queue, tqueue, queues,
5005 if (!strncmp(a->qname, tqueue->queue, PF_QNAME_SIZE) &&
5006 (interface->ifname[0] == 0 ||
5007 (!interface->not && !strncmp(interface->ifname,
5008 tqueue->ifname, IFNAMSIZ)) ||
5009 (interface->not && strncmp(interface->ifname,
5010 tqueue->ifname, IFNAMSIZ)))) {
5011 /* found ourself in queues */
5014 memcpy(&pa, a, sizeof(struct pf_altq));
5016 if (pa.scheduler != ALTQT_NONE &&
5017 pa.scheduler != tqueue->scheduler) {
5018 yyerror("exactly one scheduler type "
5019 "per interface allowed");
5022 pa.scheduler = tqueue->scheduler;
5024 /* scheduler dependent error checking */
5025 switch (pa.scheduler) {
5027 if (nqueues != NULL) {
5028 yyerror("priq queues cannot "
5029 "have child queues");
5032 if (bwspec.bw_absolute > 0 ||
5033 bwspec.bw_percent < 100) {
5034 yyerror("priq doesn't take "
5043 if (strlcpy(pa.ifname, tqueue->ifname,
5044 sizeof(pa.ifname)) >= sizeof(pa.ifname))
5045 errx(1, "expand_queue: strlcpy");
5046 if (strlcpy(pa.parent, tqueue->parent,
5047 sizeof(pa.parent)) >= sizeof(pa.parent))
5048 errx(1, "expand_queue: strlcpy");
5050 if (eval_pfqueue(pf, &pa, &bwspec, opts))
5053 if (pfctl_add_altq(pf, &pa))
5056 for (nq = nqueues; nq != NULL; nq = nq->next) {
5057 if (!strcmp(a->qname, nq->queue)) {
5058 yyerror("queue cannot have "
5064 sizeof(struct node_queue));
5066 err(1, "expand_queue: calloc");
5067 if (strlcpy(n->parent, a->qname,
5068 sizeof(n->parent)) >=
5070 errx(1, "expand_queue strlcpy");
5071 if (strlcpy(n->queue, nq->queue,
5072 sizeof(n->queue)) >=
5074 errx(1, "expand_queue strlcpy");
5075 if (strlcpy(n->ifname, tqueue->ifname,
5076 sizeof(n->ifname)) >=
5078 errx(1, "expand_queue strlcpy");
5079 n->scheduler = tqueue->scheduler;
5085 queues->tail->next = n;
5089 if ((pf->opts & PF_OPT_VERBOSE) && (
5090 (found == 1 && interface->ifname[0] == 0) ||
5091 (found > 0 && interface->ifname[0] != 0))) {
5092 print_queue(&pf->paltq->altq, 0,
5093 &bwspec, interface->ifname[0] != 0,
5095 if (nqueues && nqueues->tail) {
5097 LOOP_THROUGH(struct node_queue,
5110 FREE_LIST(struct node_queue, nqueues);
5111 FREE_LIST(struct node_if, interfaces);
5114 yyerror("queue %s has no parent", a->qname);
5125 expand_rule(struct pf_rule *r,
5126 struct node_if *interfaces, struct node_host *rpool_hosts,
5127 struct node_proto *protos, struct node_os *src_oses,
5128 struct node_host *src_hosts, struct node_port *src_ports,
5129 struct node_host *dst_hosts, struct node_port *dst_ports,
5130 struct node_uid *uids, struct node_gid *gids, struct node_icmp *icmp_types,
5131 const char *anchor_call)
5133 sa_family_t af = r->af;
5134 int added = 0, error = 0;
5135 char ifname[IF_NAMESIZE];
5136 char label[PF_RULE_LABEL_SIZE];
5137 char tagname[PF_TAG_NAME_SIZE];
5138 char match_tagname[PF_TAG_NAME_SIZE];
5139 struct pf_pooladdr *pa;
5140 struct node_host *h;
5141 u_int8_t flags, flagset, keep_state;
5143 if (strlcpy(label, r->label, sizeof(label)) >= sizeof(label))
5144 errx(1, "expand_rule: strlcpy");
5145 if (strlcpy(tagname, r->tagname, sizeof(tagname)) >= sizeof(tagname))
5146 errx(1, "expand_rule: strlcpy");
5147 if (strlcpy(match_tagname, r->match_tagname, sizeof(match_tagname)) >=
5148 sizeof(match_tagname))
5149 errx(1, "expand_rule: strlcpy");
5151 flagset = r->flagset;
5152 keep_state = r->keep_state;
5154 LOOP_THROUGH(struct node_if, interface, interfaces,
5155 LOOP_THROUGH(struct node_proto, proto, protos,
5156 LOOP_THROUGH(struct node_icmp, icmp_type, icmp_types,
5157 LOOP_THROUGH(struct node_host, src_host, src_hosts,
5158 LOOP_THROUGH(struct node_port, src_port, src_ports,
5159 LOOP_THROUGH(struct node_os, src_os, src_oses,
5160 LOOP_THROUGH(struct node_host, dst_host, dst_hosts,
5161 LOOP_THROUGH(struct node_port, dst_port, dst_ports,
5162 LOOP_THROUGH(struct node_uid, uid, uids,
5163 LOOP_THROUGH(struct node_gid, gid, gids,
5166 /* for link-local IPv6 address, interface must match up */
5167 if ((r->af && src_host->af && r->af != src_host->af) ||
5168 (r->af && dst_host->af && r->af != dst_host->af) ||
5169 (src_host->af && dst_host->af &&
5170 src_host->af != dst_host->af) ||
5171 (src_host->ifindex && dst_host->ifindex &&
5172 src_host->ifindex != dst_host->ifindex) ||
5173 (src_host->ifindex && *interface->ifname &&
5174 src_host->ifindex != if_nametoindex(interface->ifname)) ||
5175 (dst_host->ifindex && *interface->ifname &&
5176 dst_host->ifindex != if_nametoindex(interface->ifname)))
5178 if (!r->af && src_host->af)
5179 r->af = src_host->af;
5180 else if (!r->af && dst_host->af)
5181 r->af = dst_host->af;
5183 if (*interface->ifname)
5184 strlcpy(r->ifname, interface->ifname,
5186 else if (if_indextoname(src_host->ifindex, ifname))
5187 strlcpy(r->ifname, ifname, sizeof(r->ifname));
5188 else if (if_indextoname(dst_host->ifindex, ifname))
5189 strlcpy(r->ifname, ifname, sizeof(r->ifname));
5191 memset(r->ifname, '\0', sizeof(r->ifname));
5193 if (strlcpy(r->label, label, sizeof(r->label)) >=
5195 errx(1, "expand_rule: strlcpy");
5196 if (strlcpy(r->tagname, tagname, sizeof(r->tagname)) >=
5198 errx(1, "expand_rule: strlcpy");
5199 if (strlcpy(r->match_tagname, match_tagname,
5200 sizeof(r->match_tagname)) >= sizeof(r->match_tagname))
5201 errx(1, "expand_rule: strlcpy");
5202 expand_label(r->label, PF_RULE_LABEL_SIZE, r->ifname, r->af,
5203 src_host, src_port, dst_host, dst_port, proto->proto);
5204 expand_label(r->tagname, PF_TAG_NAME_SIZE, r->ifname, r->af,
5205 src_host, src_port, dst_host, dst_port, proto->proto);
5206 expand_label(r->match_tagname, PF_TAG_NAME_SIZE, r->ifname,
5207 r->af, src_host, src_port, dst_host, dst_port,
5210 error += check_netmask(src_host, r->af);
5211 error += check_netmask(dst_host, r->af);
5213 r->ifnot = interface->not;
5214 r->proto = proto->proto;
5215 r->src.addr = src_host->addr;
5216 r->src.neg = src_host->not;
5217 r->src.port[0] = src_port->port[0];
5218 r->src.port[1] = src_port->port[1];
5219 r->src.port_op = src_port->op;
5220 r->dst.addr = dst_host->addr;
5221 r->dst.neg = dst_host->not;
5222 r->dst.port[0] = dst_port->port[0];
5223 r->dst.port[1] = dst_port->port[1];
5224 r->dst.port_op = dst_port->op;
5225 r->uid.op = uid->op;
5226 r->uid.uid[0] = uid->uid[0];
5227 r->uid.uid[1] = uid->uid[1];
5228 r->gid.op = gid->op;
5229 r->gid.gid[0] = gid->gid[0];
5230 r->gid.gid[1] = gid->gid[1];
5231 r->type = icmp_type->type;
5232 r->code = icmp_type->code;
5234 if ((keep_state == PF_STATE_MODULATE ||
5235 keep_state == PF_STATE_SYNPROXY) &&
5236 r->proto && r->proto != IPPROTO_TCP)
5237 r->keep_state = PF_STATE_NORMAL;
5239 r->keep_state = keep_state;
5241 if (r->proto && r->proto != IPPROTO_TCP) {
5246 r->flagset = flagset;
5248 if (icmp_type->proto && r->proto != icmp_type->proto) {
5249 yyerror("icmp-type mismatch");
5253 if (src_os && src_os->os) {
5254 r->os_fingerprint = pfctl_get_fingerprint(src_os->os);
5255 if ((pf->opts & PF_OPT_VERBOSE2) &&
5256 r->os_fingerprint == PF_OSFP_NOMATCH)
5258 "warning: unknown '%s' OS fingerprint\n",
5261 r->os_fingerprint = PF_OSFP_ANY;
5264 TAILQ_INIT(&r->rpool.list);
5265 for (h = rpool_hosts; h != NULL; h = h->next) {
5266 pa = calloc(1, sizeof(struct pf_pooladdr));
5268 err(1, "expand_rule: calloc");
5270 if (h->ifname != NULL) {
5271 if (strlcpy(pa->ifname, h->ifname,
5272 sizeof(pa->ifname)) >=
5274 errx(1, "expand_rule: strlcpy");
5277 TAILQ_INSERT_TAIL(&r->rpool.list, pa, entries);
5280 if (rule_consistent(r, anchor_call[0]) < 0 || error)
5281 yyerror("skipping rule due to errors");
5283 r->nr = pf->astack[pf->asd]->match++;
5284 pfctl_add_rule(pf, r, anchor_call);
5290 FREE_LIST(struct node_if, interfaces);
5291 FREE_LIST(struct node_proto, protos);
5292 FREE_LIST(struct node_host, src_hosts);
5293 FREE_LIST(struct node_port, src_ports);
5294 FREE_LIST(struct node_os, src_oses);
5295 FREE_LIST(struct node_host, dst_hosts);
5296 FREE_LIST(struct node_port, dst_ports);
5297 FREE_LIST(struct node_uid, uids);
5298 FREE_LIST(struct node_gid, gids);
5299 FREE_LIST(struct node_icmp, icmp_types);
5300 FREE_LIST(struct node_host, rpool_hosts);
5303 yyerror("rule expands to no valid combination");
5307 expand_skip_interface(struct node_if *interfaces)
5311 if (!interfaces || (!interfaces->next && !interfaces->not &&
5312 !strcmp(interfaces->ifname, "none"))) {
5313 if (pf->opts & PF_OPT_VERBOSE)
5314 printf("set skip on none\n");
5315 errs = pfctl_set_interface_flags(pf, "", PFI_IFLAG_SKIP, 0);
5319 if (pf->opts & PF_OPT_VERBOSE)
5320 printf("set skip on {");
5321 LOOP_THROUGH(struct node_if, interface, interfaces,
5322 if (pf->opts & PF_OPT_VERBOSE)
5323 printf(" %s", interface->ifname);
5324 if (interface->not) {
5325 yyerror("skip on ! <interface> is not supported");
5328 errs += pfctl_set_interface_flags(pf,
5329 interface->ifname, PFI_IFLAG_SKIP, 1);
5331 if (pf->opts & PF_OPT_VERBOSE)
5334 FREE_LIST(struct node_if, interfaces);
5346 check_rulestate(int desired_state)
5348 if (require_order && (rulestate > desired_state)) {
5349 yyerror("Rules must be in order: options, normalization, "
5350 "queueing, translation, filtering");
5353 rulestate = desired_state;
5358 kw_cmp(const void *k, const void *e)
5360 return (strcmp(k, ((const struct keywords *)e)->k_name));
5366 /* this has to be sorted always */
5367 static const struct keywords keywords[] = {
5369 { "allow-opts", ALLOWOPTS},
5371 { "anchor", ANCHOR},
5372 { "antispoof", ANTISPOOF},
5374 { "bandwidth", BANDWIDTH},
5376 { "binat-anchor", BINATANCHOR},
5377 { "bitmask", BITMASK},
5379 { "block-policy", BLOCKPOLICY},
5380 { "buckets", BUCKETS},
5384 { "crop", FRAGCROP},
5386 { "divert-reply", DIVERTREPLY},
5387 { "divert-to", DIVERTTO},
5389 { "drop-ovl", FRAGDROP},
5392 { "fastroute", FASTROUTE},
5393 { "file", FILENAME},
5394 { "fingerprints", FINGERPRINTS},
5396 { "floating", FLOATING},
5399 { "fragment", FRAGMENT},
5401 { "global", GLOBAL},
5405 { "hostid", HOSTID},
5406 { "icmp-type", ICMPTYPE},
5407 { "icmp6-type", ICMP6TYPE},
5408 { "if-bound", IFBOUND},
5410 { "include", INCLUDE},
5413 { "interval", INTERVAL},
5417 { "linkshare", LINKSHARE},
5420 { "loginterface", LOGINTERFACE},
5422 { "max-mss", MAXMSS},
5423 { "max-src-conn", MAXSRCCONN},
5424 { "max-src-conn-rate", MAXSRCCONNRATE},
5425 { "max-src-nodes", MAXSRCNODES},
5426 { "max-src-states", MAXSRCSTATES},
5427 { "min-ttl", MINTTL},
5428 { "modulate", MODULATE},
5430 { "nat-anchor", NATANCHOR},
5433 { "no-route", NOROUTE},
5434 { "no-sync", NOSYNC},
5436 { "optimization", OPTIMIZATION},
5439 { "overload", OVERLOAD},
5442 { "priority", PRIORITY},
5444 { "probability", PROBABILITY},
5446 { "qlimit", QLIMIT},
5449 { "random", RANDOM},
5450 { "random-id", RANDOMID},
5452 { "rdr-anchor", RDRANCHOR},
5453 { "realtime", REALTIME},
5454 { "reassemble", REASSEMBLE},
5455 { "reply-to", REPLYTO},
5456 { "require-order", REQUIREORDER},
5457 { "return", RETURN},
5458 { "return-icmp", RETURNICMP},
5459 { "return-icmp6", RETURNICMP6},
5460 { "return-rst", RETURNRST},
5461 { "round-robin", ROUNDROBIN},
5463 { "route-to", ROUTETO},
5464 { "rtable", RTABLE},
5466 { "ruleset-optimization", RULESET_OPTIMIZATION},
5469 { "set-tos", SETTOS},
5471 { "sloppy", SLOPPY},
5472 { "source-hash", SOURCEHASH},
5473 { "source-track", SOURCETRACK},
5475 { "state-defaults", STATEDEFAULTS},
5476 { "state-policy", STATEPOLICY},
5477 { "static-port", STATICPORT},
5478 { "sticky-address", STICKYADDRESS},
5479 { "synproxy", SYNPROXY},
5482 { "tagged", TAGGED},
5483 { "target", TARGET},
5484 { "tbrsize", TBRSIZE},
5485 { "timeout", TIMEOUT},
5489 { "upperlimit", UPPERLIMIT},
5490 { "urpf-failed", URPFFAILED},
5493 const struct keywords *p;
5495 p = bsearch(s, keywords, sizeof(keywords)/sizeof(keywords[0]),
5496 sizeof(keywords[0]), kw_cmp);
5500 fprintf(stderr, "%s: %d\n", s, p->k_val);
5504 fprintf(stderr, "string: %s\n", s);
5509 #define MAXPUSHBACK 128
5513 char pushback_buffer[MAXPUSHBACK];
5514 int pushback_index = 0;
5522 /* Read character from the parsebuffer instead of input. */
5523 if (parseindex >= 0) {
5524 c = parsebuf[parseindex++];
5533 return (pushback_buffer[--pushback_index]);
5536 if ((c = getc(file->stream)) == EOF) {
5537 yyerror("reached end of file while parsing quoted string");
5538 if (popfile() == EOF)
5545 while ((c = getc(file->stream)) == '\\') {
5546 next = getc(file->stream);
5551 yylval.lineno = file->lineno;
5556 if (popfile() == EOF)
5558 c = getc(file->stream);
5570 if (parseindex >= 0)
5573 if (pushback_index < MAXPUSHBACK-1)
5574 return (pushback_buffer[pushback_index++] = c);
5586 /* skip to either EOF or the first real EOL */
5589 c = pushback_buffer[--pushback_index];
5607 int quotec, next, c;
5612 while ((c = lgetc(0)) == ' ' || c == '\t')
5615 yylval.lineno = file->lineno;
5617 while ((c = lgetc(0)) != '\n' && c != EOF)
5619 if (c == '$' && parsebuf == NULL) {
5621 if ((c = lgetc(0)) == EOF)
5624 if (p + 1 >= buf + sizeof(buf) - 1) {
5625 yyerror("string too long");
5628 if (isalnum(c) || c == '_') {
5638 yyerror("macro '%s' not defined", buf);
5651 if ((c = lgetc(quotec)) == EOF)
5656 } else if (c == '\\') {
5657 if ((next = lgetc(quotec)) == EOF)
5659 if (next == quotec || c == ' ' || c == '\t')
5661 else if (next == '\n')
5665 } else if (c == quotec) {
5669 if (p + 1 >= buf + sizeof(buf) - 1) {
5670 yyerror("string too long");
5675 yylval.v.string = strdup(buf);
5676 if (yylval.v.string == NULL)
5677 err(1, "yylex: strdup");
5682 yylval.v.i = PF_OP_XRG;
5683 return (PORTBINARY);
5690 yylval.v.i = PF_OP_IRG;
5691 return (PORTBINARY);
5703 #define allowed_to_end_number(x) \
5704 (isspace(x) || x == ')' || x ==',' || x == '/' || x == '}' || x == '=')
5706 if (c == '-' || isdigit(c)) {
5709 if ((unsigned)(p-buf) >= sizeof(buf)) {
5710 yyerror("string too long");
5713 } while ((c = lgetc(0)) != EOF && isdigit(c));
5715 if (p == buf + 1 && buf[0] == '-')
5717 if (c == EOF || allowed_to_end_number(c)) {
5718 const char *errstr = NULL;
5721 yylval.v.number = strtonum(buf, LLONG_MIN,
5722 LLONG_MAX, &errstr);
5724 yyerror("\"%s\" invalid number: %s",
5739 #define allowed_in_string(x) \
5740 (isalnum(x) || (ispunct(x) && x != '(' && x != ')' && \
5741 x != '{' && x != '}' && x != '<' && x != '>' && \
5742 x != '!' && x != '=' && x != '/' && x != '#' && \
5745 if (isalnum(c) || c == ':' || c == '_') {
5748 if ((unsigned)(p-buf) >= sizeof(buf)) {
5749 yyerror("string too long");
5752 } while ((c = lgetc(0)) != EOF && (allowed_in_string(c)));
5755 if ((token = lookup(buf)) == STRING)
5756 if ((yylval.v.string = strdup(buf)) == NULL)
5757 err(1, "yylex: strdup");
5761 yylval.lineno = file->lineno;
5770 check_file_secrecy(int fd, const char *fname)
5774 if (fstat(fd, &st)) {
5775 warn("cannot stat %s", fname);
5778 if (st.st_uid != 0 && st.st_uid != getuid()) {
5779 warnx("%s: owner not root or current user", fname);
5782 if (st.st_mode & (S_IRWXG | S_IRWXO)) {
5783 warnx("%s: group/world readable/writeable", fname);
5790 pushfile(const char *name, int secret)
5794 if ((nfile = calloc(1, sizeof(struct file))) == NULL ||
5795 (nfile->name = strdup(name)) == NULL) {
5799 if (TAILQ_FIRST(&files) == NULL && strcmp(nfile->name, "-") == 0) {
5800 nfile->stream = stdin;
5802 if ((nfile->name = strdup("stdin")) == NULL) {
5807 } else if ((nfile->stream = fopen(nfile->name, "r")) == NULL) {
5808 warn("%s", nfile->name);
5812 } else if (secret &&
5813 check_file_secrecy(fileno(nfile->stream), nfile->name)) {
5814 fclose(nfile->stream);
5820 TAILQ_INSERT_TAIL(&files, nfile, entry);
5829 if ((prev = TAILQ_PREV(file, files, entry)) != NULL) {
5830 prev->errors += file->errors;
5831 TAILQ_REMOVE(&files, file, entry);
5832 fclose(file->stream);
5842 parse_config(char *filename, struct pfctl *xpf)
5849 rulestate = PFCTL_STATE_NONE;
5850 returnicmpdefault = (ICMP_UNREACH << 8) | ICMP_UNREACH_PORT;
5851 returnicmp6default =
5852 (ICMP6_DST_UNREACH << 8) | ICMP6_DST_UNREACH_NOPORT;
5853 blockpolicy = PFRULE_DROP;
5856 if ((file = pushfile(filename, 0)) == NULL) {
5857 warn("cannot open the main config file!");
5862 errors = file->errors;
5865 /* Free macros and check which have not been used. */
5866 while ((sym = TAILQ_FIRST(&symhead))) {
5867 if ((pf->opts & PF_OPT_VERBOSE2) && !sym->used)
5868 fprintf(stderr, "warning: macro '%s' not "
5869 "used\n", sym->nam);
5872 TAILQ_REMOVE(&symhead, sym, entry);
5876 return (errors ? -1 : 0);
5880 symset(const char *nam, const char *val, int persist)
5884 for (sym = TAILQ_FIRST(&symhead); sym && strcmp(nam, sym->nam);
5885 sym = TAILQ_NEXT(sym, entry))
5889 if (sym->persist == 1)
5894 TAILQ_REMOVE(&symhead, sym, entry);
5898 if ((sym = calloc(1, sizeof(*sym))) == NULL)
5901 sym->nam = strdup(nam);
5902 if (sym->nam == NULL) {
5906 sym->val = strdup(val);
5907 if (sym->val == NULL) {
5913 sym->persist = persist;
5914 TAILQ_INSERT_TAIL(&symhead, sym, entry);
5919 pfctl_cmdline_symset(char *s)
5924 if ((val = strrchr(s, '=')) == NULL)
5927 if ((sym = malloc(strlen(s) - strlen(val) + 1)) == NULL)
5928 err(1, "pfctl_cmdline_symset: malloc");
5930 strlcpy(sym, s, strlen(s) - strlen(val) + 1);
5932 ret = symset(sym, val + 1, 1);
5939 symget(const char *nam)
5943 TAILQ_FOREACH(sym, &symhead, entry)
5944 if (strcmp(nam, sym->nam) == 0) {
5952 mv_rules(struct pf_ruleset *src, struct pf_ruleset *dst)
5957 for (i = 0; i < PF_RULESET_MAX; ++i) {
5958 while ((r = TAILQ_FIRST(src->rules[i].active.ptr))
5960 TAILQ_REMOVE(src->rules[i].active.ptr, r, entries);
5961 TAILQ_INSERT_TAIL(dst->rules[i].active.ptr, r, entries);
5962 dst->anchor->match++;
5964 src->anchor->match = 0;
5965 while ((r = TAILQ_FIRST(src->rules[i].inactive.ptr))
5967 TAILQ_REMOVE(src->rules[i].inactive.ptr, r, entries);
5968 TAILQ_INSERT_TAIL(dst->rules[i].inactive.ptr,
5975 decide_address_family(struct node_host *n, sa_family_t *af)
5977 if (*af != 0 || n == NULL)
5980 while ((n = n->next) != NULL) {
5989 remove_invalid_hosts(struct node_host **nh, sa_family_t *af)
5991 struct node_host *n = *nh, *prev = NULL;
5994 if (*af && n->af && n->af != *af) {
5995 /* unlink and free n */
5996 struct node_host *next = n->next;
5998 /* adjust tail pointer */
5999 if (n == (*nh)->tail)
6001 /* adjust previous node's next pointer */
6007 if (n->ifname != NULL)
6021 invalid_redirect(struct node_host *nh, sa_family_t af)
6024 struct node_host *n;
6026 /* tables and dyniftl are ok without an address family */
6027 for (n = nh; n != NULL; n = n->next) {
6028 if (n->addr.type != PF_ADDR_TABLE &&
6029 n->addr.type != PF_ADDR_DYNIFTL) {
6030 yyerror("address family not given and "
6031 "translation address expands to multiple "
6032 "address families");
6038 yyerror("no translation address with matching address family "
6046 atoul(char *s, u_long *ulvalp)
6052 ulval = strtoul(s, &ep, 0);
6053 if (s[0] == '\0' || *ep != '\0')
6055 if (errno == ERANGE && ulval == ULONG_MAX)
6067 if (atoul(n, &ulval) == 0) {
6068 if (ulval > 65535) {
6069 yyerror("illegal port value %lu", ulval);
6072 return (htons(ulval));
6074 s = getservbyname(n, "tcp");
6076 s = getservbyname(n, "udp");
6078 yyerror("unknown port %s", n);
6086 rule_label(struct pf_rule *r, char *s)
6089 if (strlcpy(r->label, s, sizeof(r->label)) >=
6091 yyerror("rule label too long (max %d chars)",
6092 sizeof(r->label)-1);
6100 parseicmpspec(char *w, sa_family_t af)
6102 const struct icmpcodeent *p;
6107 icmptype = returnicmpdefault >> 8;
6109 icmptype = returnicmp6default >> 8;
6111 if (atoul(w, &ulval) == -1) {
6112 if ((p = geticmpcodebyname(icmptype, w, af)) == NULL) {
6113 yyerror("unknown icmp code %s", w);
6119 yyerror("invalid icmp code %lu", ulval);
6122 return (icmptype << 8 | ulval);
6126 parseport(char *port, struct range *r, int extensions)
6128 char *p = strchr(port, ':');
6131 if ((r->a = getservice(port)) == -1)
6137 if ((extensions & PPORT_STAR) && !strcmp(p+1, "*")) {
6139 if ((r->a = getservice(port)) == -1)
6145 if ((extensions & PPORT_RANGE)) {
6147 if ((r->a = getservice(port)) == -1 ||
6148 (r->b = getservice(p)) == -1)
6161 pfctl_load_anchors(int dev, struct pfctl *pf, struct pfr_buffer *trans)
6163 struct loadanchors *la;
6165 TAILQ_FOREACH(la, &loadanchorshead, entries) {
6166 if (pf->opts & PF_OPT_VERBOSE)
6167 fprintf(stderr, "\nLoading anchor %s from %s\n",
6168 la->anchorname, la->filename);
6169 if (pfctl_rules(dev, la->filename, pf->opts, pf->optimize,
6170 la->anchorname, trans) == -1)
6178 rt_tableid_max(void)
6182 size_t l = sizeof(fibs);
6184 if (sysctlbyname("net.fibs", &fibs, &l, NULL, 0) == -1)
6185 fibs = 16; /* XXX RT_MAXFIBS, at least limit it some. */
6187 * As the OpenBSD code only compares > and not >= we need to adjust
6188 * here given we only accept values of 0..n and want to avoid #ifdefs
6193 return (RT_TABLEID_MAX);