sbin/pfctl/parse.y

   1 /*      $OpenBSD: parse.y,v 1.554 2008/10/17 12:59:53 henning Exp $     */
   2
   3 /*-
   4  * SPDX-License-Identifier: BSD-2-Clause
   5  *
   6  * Copyright (c) 2001 Markus Friedl.  All rights reserved.
   7  * Copyright (c) 2001 Daniel Hartmeier.  All rights reserved.
   8  * Copyright (c) 2001 Theo de Raadt.  All rights reserved.
   9  * Copyright (c) 2002,2003 Henning Brauer. All rights reserved.
  10  *
  11  * Redistribution and use in source and binary forms, with or without
  12  * modification, are permitted provided that the following conditions
  13  * are met:
  14  * 1. Redistributions of source code must retain the above copyright
  15  *    notice, this list of conditions and the following disclaimer.
  16  * 2. Redistributions in binary form must reproduce the above copyright
  17  *    notice, this list of conditions and the following disclaimer in the
  18  *    documentation and/or other materials provided with the distribution.
  19  *
  20  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  21  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  22  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  23  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  24  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  25  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  26  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  27  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  28  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  29  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  30  */
  31 %{
  32 #include <sys/cdefs.h>
  33 __FBSDID("$FreeBSD$");
  34
  35 #define PFIOC_USE_LATEST
  36
  37 #include <sys/types.h>
  38 #include <sys/socket.h>
  39 #include <sys/stat.h>
  40 #ifdef __FreeBSD__
  41 #include <sys/sysctl.h>
  42 #endif
  43 #include <net/if.h>
  44 #include <netinet/in.h>
  45 #include <netinet/in_systm.h>
  46 #include <netinet/ip.h>
  47 #include <netinet/ip_icmp.h>
  48 #include <netinet/icmp6.h>
  49 #include <net/pfvar.h>
  50 #include <arpa/inet.h>
  51 #include <net/altq/altq.h>
  52 #include <net/altq/altq_cbq.h>
  53 #include <net/altq/altq_codel.h>
  54 #include <net/altq/altq_priq.h>
  55 #include <net/altq/altq_hfsc.h>
  56 #include <net/altq/altq_fairq.h>
  57
  58 #include <assert.h>
  59 #include <stdio.h>
  60 #include <unistd.h>
  61 #include <stdlib.h>
  62 #include <netdb.h>
  63 #include <stdarg.h>
  64 #include <errno.h>
  65 #include <string.h>
  66 #include <ctype.h>
  67 #include <math.h>
  68 #include <err.h>
  69 #include <limits.h>
  70 #include <pwd.h>
  71 #include <grp.h>
  72 #include <md5.h>
  73
  74 #include "pfctl_parser.h"
  75 #include "pfctl.h"
  76
  77 static struct pfctl     *pf = NULL;
  78 static int               debug = 0;
  79 static int               rulestate = 0;
  80 static u_int16_t         returnicmpdefault =
  81                             (ICMP_UNREACH << 8) | ICMP_UNREACH_PORT;
  82 static u_int16_t         returnicmp6default =
  83                             (ICMP6_DST_UNREACH << 8) | ICMP6_DST_UNREACH_NOPORT;
  84 static int               blockpolicy = PFRULE_DROP;
  85 static int               failpolicy = PFRULE_DROP;
  86 static int               require_order = 1;
  87 static int               default_statelock;
  88
  89 static TAILQ_HEAD(files, file)   files = TAILQ_HEAD_INITIALIZER(files);
  90 static struct file {
  91         TAILQ_ENTRY(file)        entry;
  92         FILE                    *stream;
  93         char                    *name;
  94         int                      lineno;
  95         int                      errors;
  96 } *file;
  97 struct file     *pushfile(const char *, int);
  98 int              popfile(void);
  99 int              check_file_secrecy(int, const char *);
 100 int              yyparse(void);
 101 int              yylex(void);
 102 int              yyerror(const char *, ...);
 103 int              kw_cmp(const void *, const void *);
 104 int              lookup(char *);
 105 int              lgetc(int);
 106 int              lungetc(int);
 107 int              findeol(void);
 108
 109 static TAILQ_HEAD(symhead, sym)  symhead = TAILQ_HEAD_INITIALIZER(symhead);
 110 struct sym {
 111         TAILQ_ENTRY(sym)         entry;
 112         int                      used;
 113         int                      persist;
 114         char                    *nam;
 115         char                    *val;
 116 };
 117 int              symset(const char *, const char *, int);
 118 char            *symget(const char *);
 119
 120 int              atoul(char *, u_long *);
 121
 122 enum {
 123         PFCTL_STATE_NONE,
 124         PFCTL_STATE_OPTION,
 125         PFCTL_STATE_SCRUB,
 126         PFCTL_STATE_QUEUE,
 127         PFCTL_STATE_NAT,
 128         PFCTL_STATE_FILTER
 129 };
 130
 131 struct node_proto {
 132         u_int8_t                 proto;
 133         struct node_proto       *next;
 134         struct node_proto       *tail;
 135 };
 136
 137 struct node_port {
 138         u_int16_t                port[2];
 139         u_int8_t                 op;
 140         struct node_port        *next;
 141         struct node_port        *tail;
 142 };
 143
 144 struct node_uid {
 145         uid_t                    uid[2];
 146         u_int8_t                 op;
 147         struct node_uid         *next;
 148         struct node_uid         *tail;
 149 };
 150
 151 struct node_gid {
 152         gid_t                    gid[2];
 153         u_int8_t                 op;
 154         struct node_gid         *next;
 155         struct node_gid         *tail;
 156 };
 157
 158 struct node_icmp {
 159         u_int8_t                 code;
 160         u_int8_t                 type;
 161         u_int8_t                 proto;
 162         struct node_icmp        *next;
 163         struct node_icmp        *tail;
 164 };
 165
 166 enum    { PF_STATE_OPT_MAX, PF_STATE_OPT_NOSYNC, PF_STATE_OPT_SRCTRACK,
 167             PF_STATE_OPT_MAX_SRC_STATES, PF_STATE_OPT_MAX_SRC_CONN,
 168             PF_STATE_OPT_MAX_SRC_CONN_RATE, PF_STATE_OPT_MAX_SRC_NODES,
 169             PF_STATE_OPT_OVERLOAD, PF_STATE_OPT_STATELOCK,
 170             PF_STATE_OPT_TIMEOUT, PF_STATE_OPT_SLOPPY, };
 171
 172 enum    { PF_SRCTRACK_NONE, PF_SRCTRACK, PF_SRCTRACK_GLOBAL, PF_SRCTRACK_RULE };
 173
 174 struct node_state_opt {
 175         int                      type;
 176         union {
 177                 u_int32_t        max_states;
 178                 u_int32_t        max_src_states;
 179                 u_int32_t        max_src_conn;
 180                 struct {
 181                         u_int32_t       limit;
 182                         u_int32_t       seconds;
 183                 }                max_src_conn_rate;
 184                 struct {
 185                         u_int8_t        flush;
 186                         char            tblname[PF_TABLE_NAME_SIZE];
 187                 }                overload;
 188                 u_int32_t        max_src_nodes;
 189                 u_int8_t         src_track;
 190                 u_int32_t        statelock;
 191                 struct {
 192                         int             number;
 193                         u_int32_t       seconds;
 194                 }                timeout;
 195         }                        data;
 196         struct node_state_opt   *next;
 197         struct node_state_opt   *tail;
 198 };
 199
 200 struct peer {
 201         struct node_host        *host;
 202         struct node_port        *port;
 203 };
 204
 205 static struct node_queue {
 206         char                     queue[PF_QNAME_SIZE];
 207         char                     parent[PF_QNAME_SIZE];
 208         char                     ifname[IFNAMSIZ];
 209         int                      scheduler;
 210         struct node_queue       *next;
 211         struct node_queue       *tail;
 212 }       *queues = NULL;
 213
 214 struct node_qassign {
 215         char            *qname;
 216         char            *pqname;
 217 };
 218
 219 static struct filter_opts {
 220         int                      marker;
 221 #define FOM_FLAGS       0x01
 222 #define FOM_ICMP        0x02
 223 #define FOM_TOS         0x04
 224 #define FOM_KEEP        0x08
 225 #define FOM_SRCTRACK    0x10
 226 #define FOM_SETPRIO     0x0400
 227 #define FOM_PRIO        0x2000
 228         struct node_uid         *uid;
 229         struct node_gid         *gid;
 230         struct {
 231                 u_int8_t         b1;
 232                 u_int8_t         b2;
 233                 u_int16_t        w;
 234                 u_int16_t        w2;
 235         } flags;
 236         struct node_icmp        *icmpspec;
 237         u_int32_t                tos;
 238         u_int32_t                prob;
 239         u_int32_t                ridentifier;
 240         struct {
 241                 int                      action;
 242                 struct node_state_opt   *options;
 243         } keep;
 244         int                      fragment;
 245         int                      allowopts;
 246         char                    *label[PF_RULE_MAX_LABEL_COUNT];
 247         int                      labelcount;
 248         struct node_qassign      queues;
 249         char                    *tag;
 250         char                    *match_tag;
 251         u_int8_t                 match_tag_not;
 252         u_int16_t                dnpipe;
 253         u_int16_t                dnrpipe;
 254         u_int32_t                free_flags;
 255         u_int                    rtableid;
 256         u_int8_t                 prio;
 257         u_int8_t                 set_prio[2];
 258         struct {
 259                 struct node_host        *addr;
 260                 u_int16_t               port;
 261         }                        divert;
 262 } filter_opts;
 263
 264 static struct antispoof_opts {
 265         char                    *label[PF_RULE_MAX_LABEL_COUNT];
 266         int                      labelcount;
 267         u_int32_t                ridentifier;
 268         u_int                    rtableid;
 269 } antispoof_opts;
 270
 271 static struct scrub_opts {
 272         int                      marker;
 273 #define SOM_MINTTL      0x01
 274 #define SOM_MAXMSS      0x02
 275 #define SOM_FRAGCACHE   0x04
 276 #define SOM_SETTOS      0x08
 277         int                      nodf;
 278         int                      minttl;
 279         int                      maxmss;
 280         int                      settos;
 281         int                      fragcache;
 282         int                      randomid;
 283         int                      reassemble_tcp;
 284         char                    *match_tag;
 285         u_int8_t                 match_tag_not;
 286         u_int                    rtableid;
 287 } scrub_opts;
 288
 289 static struct queue_opts {
 290         int                     marker;
 291 #define QOM_BWSPEC      0x01
 292 #define QOM_SCHEDULER   0x02
 293 #define QOM_PRIORITY    0x04
 294 #define QOM_TBRSIZE     0x08
 295 #define QOM_QLIMIT      0x10
 296         struct node_queue_bw    queue_bwspec;
 297         struct node_queue_opt   scheduler;
 298         int                     priority;
 299         unsigned int            tbrsize;
 300         int                     qlimit;
 301 } queue_opts;
 302
 303 static struct table_opts {
 304         int                     flags;
 305         int                     init_addr;
 306         struct node_tinithead   init_nodes;
 307 } table_opts;
 308
 309 static struct pool_opts {
 310         int                      marker;
 311 #define POM_TYPE                0x01
 312 #define POM_STICKYADDRESS       0x02
 313         u_int8_t                 opts;
 314         int                      type;
 315         int                      staticport;
 316         struct pf_poolhashkey   *key;
 317         struct pf_mape_portset   mape;
 318
 319 } pool_opts;
 320
 321 static struct codel_opts         codel_opts;
 322 static struct node_hfsc_opts     hfsc_opts;
 323 static struct node_fairq_opts    fairq_opts;
 324 static struct node_state_opt    *keep_state_defaults = NULL;
 325 static struct pfctl_watermarks   syncookie_opts;
 326
 327 int              disallow_table(struct node_host *, const char *);
 328 int              disallow_urpf_failed(struct node_host *, const char *);
 329 int              disallow_alias(struct node_host *, const char *);
 330 int              rule_consistent(struct pfctl_rule *, int);
 331 int              filter_consistent(struct pfctl_rule *, int);
 332 int              nat_consistent(struct pfctl_rule *);
 333 int              rdr_consistent(struct pfctl_rule *);
 334 int              process_tabledef(char *, struct table_opts *);
 335 void             expand_label_str(char *, size_t, const char *, const char *);
 336 void             expand_label_if(const char *, char *, size_t, const char *);
 337 void             expand_label_addr(const char *, char *, size_t, u_int8_t,
 338                     struct pf_rule_addr *);
 339 void             expand_label_port(const char *, char *, size_t,
 340                     struct pf_rule_addr *);
 341 void             expand_label_proto(const char *, char *, size_t, u_int8_t);
 342 void             expand_label_nr(const char *, char *, size_t,
 343                     struct pfctl_rule *);
 344 void             expand_rule(struct pfctl_rule *, struct node_if *,
 345                     struct node_host *, struct node_proto *, struct node_os *,
 346                     struct node_host *, struct node_port *, struct node_host *,
 347                     struct node_port *, struct node_uid *, struct node_gid *,
 348                     struct node_icmp *, const char *);
 349 int              expand_altq(struct pf_altq *, struct node_if *,
 350                     struct node_queue *, struct node_queue_bw bwspec,
 351                     struct node_queue_opt *);
 352 int              expand_queue(struct pf_altq *, struct node_if *,
 353                     struct node_queue *, struct node_queue_bw,
 354                     struct node_queue_opt *);
 355 int              expand_skip_interface(struct node_if *);
 356
 357 int      check_rulestate(int);
 358 int      getservice(char *);
 359 int      rule_label(struct pfctl_rule *, char *s[PF_RULE_MAX_LABEL_COUNT]);
 360 int      rt_tableid_max(void);
 361
 362 void     mv_rules(struct pfctl_ruleset *, struct pfctl_ruleset *);
 363 void     decide_address_family(struct node_host *, sa_family_t *);
 364 void     remove_invalid_hosts(struct node_host **, sa_family_t *);
 365 int      invalid_redirect(struct node_host *, sa_family_t);
 366 u_int16_t parseicmpspec(char *, sa_family_t);
 367 int      kw_casecmp(const void *, const void *);
 368 int      map_tos(char *string, int *);
 369
 370 static TAILQ_HEAD(loadanchorshead, loadanchors)
 371     loadanchorshead = TAILQ_HEAD_INITIALIZER(loadanchorshead);
 372
 373 struct loadanchors {
 374         TAILQ_ENTRY(loadanchors)         entries;
 375         char                            *anchorname;
 376         char                            *filename;
 377 };
 378
 379 typedef struct {
 380         union {
 381                 int64_t                  number;
 382                 double                   probability;
 383                 int                      i;
 384                 char                    *string;
 385                 u_int                    rtableid;
 386                 struct {
 387                         u_int8_t         b1;
 388                         u_int8_t         b2;
 389                         u_int16_t        w;
 390                         u_int16_t        w2;
 391                 }                        b;
 392                 struct range {
 393                         int              a;
 394                         int              b;
 395                         int              t;
 396                 }                        range;
 397                 struct node_if          *interface;
 398                 struct node_proto       *proto;
 399                 struct node_icmp        *icmp;
 400                 struct node_host        *host;
 401                 struct node_os          *os;
 402                 struct node_port        *port;
 403                 struct node_uid         *uid;
 404                 struct node_gid         *gid;
 405                 struct node_state_opt   *state_opt;
 406                 struct peer              peer;
 407                 struct {
 408                         struct peer      src, dst;
 409                         struct node_os  *src_os;
 410                 }                        fromto;
 411                 struct {
 412                         struct node_host        *host;
 413                         u_int8_t                 rt;
 414                         u_int8_t                 pool_opts;
 415                         sa_family_t              af;
 416                         struct pf_poolhashkey   *key;
 417                 }                        route;
 418                 struct redirection {
 419                         struct node_host        *host;
 420                         struct range             rport;
 421                 }                       *redirection;
 422                 struct {
 423                         int                      action;
 424                         struct node_state_opt   *options;
 425                 }                        keep_state;
 426                 struct {
 427                         u_int8_t         log;
 428                         u_int8_t         logif;
 429                         u_int8_t         quick;
 430                 }                        logquick;
 431                 struct {
 432                         int              neg;
 433                         char            *name;
 434                 }                        tagged;
 435                 struct pf_poolhashkey   *hashkey;
 436                 struct node_queue       *queue;
 437                 struct node_queue_opt    queue_options;
 438                 struct node_queue_bw     queue_bwspec;
 439                 struct node_qassign      qassign;
 440                 struct filter_opts       filter_opts;
 441                 struct antispoof_opts    antispoof_opts;
 442                 struct queue_opts        queue_opts;
 443                 struct scrub_opts        scrub_opts;
 444                 struct table_opts        table_opts;
 445                 struct pool_opts         pool_opts;
 446                 struct node_hfsc_opts    hfsc_opts;
 447                 struct node_fairq_opts   fairq_opts;
 448                 struct codel_opts        codel_opts;
 449                 struct pfctl_watermarks *watermarks;
 450         } v;
 451         int lineno;
 452 } YYSTYPE;
 453
 454 #define PPORT_RANGE     1
 455 #define PPORT_STAR      2
 456 int     parseport(char *, struct range *r, int);
 457
 458 #define DYNIF_MULTIADDR(addr) ((addr).type == PF_ADDR_DYNIFTL && \
 459         (!((addr).iflags & PFI_AFLAG_NOALIAS) ||                 \
 460         !isdigit((addr).v.ifname[strlen((addr).v.ifname)-1])))
 461
 462 %}
 463
 464 %token  PASS BLOCK MATCH SCRUB RETURN IN OS OUT LOG QUICK ON FROM TO FLAGS
 465 %token  RETURNRST RETURNICMP RETURNICMP6 PROTO INET INET6 ALL ANY ICMPTYPE
 466 %token  ICMP6TYPE CODE KEEP MODULATE STATE PORT RDR NAT BINAT ARROW NODF
 467 %token  MINTTL ERROR ALLOWOPTS FASTROUTE FILENAME ROUTETO DUPTO REPLYTO NO LABEL
 468 %token  NOROUTE URPFFAILED FRAGMENT USER GROUP MAXMSS MAXIMUM TTL TOS DROP TABLE
 469 %token  REASSEMBLE FRAGDROP FRAGCROP ANCHOR NATANCHOR RDRANCHOR BINATANCHOR
 470 %token  SET OPTIMIZATION TIMEOUT LIMIT LOGINTERFACE BLOCKPOLICY FAILPOLICY
 471 %token  RANDOMID REQUIREORDER SYNPROXY FINGERPRINTS NOSYNC DEBUG SKIP HOSTID
 472 %token  ANTISPOOF FOR INCLUDE KEEPCOUNTERS SYNCOOKIES
 473 %token  BITMASK RANDOM SOURCEHASH ROUNDROBIN STATICPORT PROBABILITY MAPEPORTSET
 474 %token  ALTQ CBQ CODEL PRIQ HFSC FAIRQ BANDWIDTH TBRSIZE LINKSHARE REALTIME
 475 %token  UPPERLIMIT QUEUE PRIORITY QLIMIT HOGS BUCKETS RTABLE TARGET INTERVAL
 476 %token  DNPIPE DNQUEUE RIDENTIFIER
 477 %token  LOAD RULESET_OPTIMIZATION PRIO
 478 %token  STICKYADDRESS MAXSRCSTATES MAXSRCNODES SOURCETRACK GLOBAL RULE
 479 %token  MAXSRCCONN MAXSRCCONNRATE OVERLOAD FLUSH SLOPPY
 480 %token  TAGGED TAG IFBOUND FLOATING STATEPOLICY STATEDEFAULTS ROUTE SETTOS
 481 %token  DIVERTTO DIVERTREPLY
 482 %token  <v.string>              STRING
 483 %token  <v.number>              NUMBER
 484 %token  <v.i>                   PORTBINARY
 485 %type   <v.interface>           interface if_list if_item_not if_item
 486 %type   <v.number>              number icmptype icmp6type uid gid
 487 %type   <v.number>              tos not yesno
 488 %type   <v.probability>         probability
 489 %type   <v.i>                   no dir af fragcache optimizer syncookie_val
 490 %type   <v.i>                   sourcetrack flush unaryop statelock
 491 %type   <v.b>                   action nataction natpasslog scrubaction
 492 %type   <v.b>                   flags flag blockspec prio
 493 %type   <v.range>               portplain portstar portrange
 494 %type   <v.hashkey>             hashkey
 495 %type   <v.proto>               proto proto_list proto_item
 496 %type   <v.number>              protoval
 497 %type   <v.icmp>                icmpspec
 498 %type   <v.icmp>                icmp_list icmp_item
 499 %type   <v.icmp>                icmp6_list icmp6_item
 500 %type   <v.number>              reticmpspec reticmp6spec
 501 %type   <v.fromto>              fromto
 502 %type   <v.peer>                ipportspec from to
 503 %type   <v.host>                ipspec toipspec xhost host dynaddr host_list
 504 %type   <v.host>                redir_host_list redirspec
 505 %type   <v.host>                route_host route_host_list routespec
 506 %type   <v.os>                  os xos os_list
 507 %type   <v.port>                portspec port_list port_item
 508 %type   <v.uid>                 uids uid_list uid_item
 509 %type   <v.gid>                 gids gid_list gid_item
 510 %type   <v.route>               route
 511 %type   <v.redirection>         redirection redirpool
 512 %type   <v.string>              label stringall tag anchorname
 513 %type   <v.string>              string varstring numberstring
 514 %type   <v.keep_state>          keep
 515 %type   <v.state_opt>           state_opt_spec state_opt_list state_opt_item
 516 %type   <v.logquick>            logquick quick log logopts logopt
 517 %type   <v.interface>           antispoof_ifspc antispoof_iflst antispoof_if
 518 %type   <v.qassign>             qname
 519 %type   <v.queue>               qassign qassign_list qassign_item
 520 %type   <v.queue_options>       scheduler
 521 %type   <v.number>              cbqflags_list cbqflags_item
 522 %type   <v.number>              priqflags_list priqflags_item
 523 %type   <v.hfsc_opts>           hfscopts_list hfscopts_item hfsc_opts
 524 %type   <v.fairq_opts>          fairqopts_list fairqopts_item fairq_opts
 525 %type   <v.codel_opts>          codelopts_list codelopts_item codel_opts
 526 %type   <v.queue_bwspec>        bandwidth
 527 %type   <v.filter_opts>         filter_opts filter_opt filter_opts_l
 528 %type   <v.filter_opts>         filter_sets filter_set filter_sets_l
 529 %type   <v.antispoof_opts>      antispoof_opts antispoof_opt antispoof_opts_l
 530 %type   <v.queue_opts>          queue_opts queue_opt queue_opts_l
 531 %type   <v.scrub_opts>          scrub_opts scrub_opt scrub_opts_l
 532 %type   <v.table_opts>          table_opts table_opt table_opts_l
 533 %type   <v.pool_opts>           pool_opts pool_opt pool_opts_l
 534 %type   <v.tagged>              tagged
 535 %type   <v.rtableid>            rtable
 536 %type   <v.watermarks>          syncookie_opts
 537 %%
 538
 539 ruleset         : /* empty */
 540                 | ruleset include '\n'
 541                 | ruleset '\n'
 542                 | ruleset option '\n'
 543                 | ruleset scrubrule '\n'
 544                 | ruleset natrule '\n'
 545                 | ruleset binatrule '\n'
 546                 | ruleset pfrule '\n'
 547                 | ruleset anchorrule '\n'
 548                 | ruleset loadrule '\n'
 549                 | ruleset altqif '\n'
 550                 | ruleset queuespec '\n'
 551                 | ruleset varset '\n'
 552                 | ruleset antispoof '\n'
 553                 | ruleset tabledef '\n'
 554                 | '{' fakeanchor '}' '\n';
 555                 | ruleset error '\n'            { file->errors++; }
 556                 ;
 557
 558 include         : INCLUDE STRING                {
 559                         struct file     *nfile;
 560
 561                         if ((nfile = pushfile($2, 0)) == NULL) {
 562                                 yyerror("failed to include file %s", $2);
 563                                 free($2);
 564                                 YYERROR;
 565                         }
 566                         free($2);
 567
 568                         file = nfile;
 569                         lungetc('\n');
 570                 }
 571                 ;
 572
 573 /*
 574  * apply to previouslys specified rule: must be careful to note
 575  * what that is: pf or nat or binat or rdr
 576  */
 577 fakeanchor      : fakeanchor '\n'
 578                 | fakeanchor anchorrule '\n'
 579                 | fakeanchor binatrule '\n'
 580                 | fakeanchor natrule '\n'
 581                 | fakeanchor pfrule '\n'
 582                 | fakeanchor error '\n'
 583                 ;
 584
 585 optimizer       : string        {
 586                         if (!strcmp($1, "none"))
 587                                 $$ = 0;
 588                         else if (!strcmp($1, "basic"))
 589                                 $$ = PF_OPTIMIZE_BASIC;
 590                         else if (!strcmp($1, "profile"))
 591                                 $$ = PF_OPTIMIZE_BASIC | PF_OPTIMIZE_PROFILE;
 592                         else {
 593                                 yyerror("unknown ruleset-optimization %s", $1);
 594                                 YYERROR;
 595                         }
 596                 }
 597                 ;
 598
 599 option          : SET OPTIMIZATION STRING               {
 600                         if (check_rulestate(PFCTL_STATE_OPTION)) {
 601                                 free($3);
 602                                 YYERROR;
 603                         }
 604                         if (pfctl_set_optimization(pf, $3) != 0) {
 605                                 yyerror("unknown optimization %s", $3);
 606                                 free($3);
 607                                 YYERROR;
 608                         }
 609                         free($3);
 610                 }
 611                 | SET RULESET_OPTIMIZATION optimizer {
 612                         if (!(pf->opts & PF_OPT_OPTIMIZE)) {
 613                                 pf->opts |= PF_OPT_OPTIMIZE;
 614                                 pf->optimize = $3;
 615                         }
 616                 }
 617                 | SET TIMEOUT timeout_spec
 618                 | SET TIMEOUT '{' optnl timeout_list '}'
 619                 | SET LIMIT limit_spec
 620                 | SET LIMIT '{' optnl limit_list '}'
 621                 | SET LOGINTERFACE stringall            {
 622                         if (check_rulestate(PFCTL_STATE_OPTION)) {
 623                                 free($3);
 624                                 YYERROR;
 625                         }
 626                         if (pfctl_set_logif(pf, $3) != 0) {
 627                                 yyerror("error setting loginterface %s", $3);
 628                                 free($3);
 629                                 YYERROR;
 630                         }
 631                         free($3);
 632                 }
 633                 | SET HOSTID number {
 634                         if ($3 == 0 || $3 > UINT_MAX) {
 635                                 yyerror("hostid must be non-zero");
 636                                 YYERROR;
 637                         }
 638                         if (pfctl_set_hostid(pf, $3) != 0) {
 639                                 yyerror("error setting hostid %08x", $3);
 640                                 YYERROR;
 641                         }
 642                 }
 643                 | SET BLOCKPOLICY DROP  {
 644                         if (pf->opts & PF_OPT_VERBOSE)
 645                                 printf("set block-policy drop\n");
 646                         if (check_rulestate(PFCTL_STATE_OPTION))
 647                                 YYERROR;
 648                         blockpolicy = PFRULE_DROP;
 649                 }
 650                 | SET BLOCKPOLICY RETURN {
 651                         if (pf->opts & PF_OPT_VERBOSE)
 652                                 printf("set block-policy return\n");
 653                         if (check_rulestate(PFCTL_STATE_OPTION))
 654                                 YYERROR;
 655                         blockpolicy = PFRULE_RETURN;
 656                 }
 657                 | SET FAILPOLICY DROP   {
 658                         if (pf->opts & PF_OPT_VERBOSE)
 659                                 printf("set fail-policy drop\n");
 660                         if (check_rulestate(PFCTL_STATE_OPTION))
 661                                 YYERROR;
 662                         failpolicy = PFRULE_DROP;
 663                 }
 664                 | SET FAILPOLICY RETURN {
 665                         if (pf->opts & PF_OPT_VERBOSE)
 666                                 printf("set fail-policy return\n");
 667                         if (check_rulestate(PFCTL_STATE_OPTION))
 668                                 YYERROR;
 669                         failpolicy = PFRULE_RETURN;
 670                 }
 671                 | SET REQUIREORDER yesno {
 672                         if (pf->opts & PF_OPT_VERBOSE)
 673                                 printf("set require-order %s\n",
 674                                     $3 == 1 ? "yes" : "no");
 675                         require_order = $3;
 676                 }
 677                 | SET FINGERPRINTS STRING {
 678                         if (pf->opts & PF_OPT_VERBOSE)
 679                                 printf("set fingerprints \"%s\"\n", $3);
 680                         if (check_rulestate(PFCTL_STATE_OPTION)) {
 681                                 free($3);
 682                                 YYERROR;
 683                         }
 684                         if (!pf->anchor->name[0]) {
 685                                 if (pfctl_file_fingerprints(pf->dev,
 686                                     pf->opts, $3)) {
 687                                         yyerror("error loading "
 688                                             "fingerprints %s", $3);
 689                                         free($3);
 690                                         YYERROR;
 691                                 }
 692                         }
 693                         free($3);
 694                 }
 695                 | SET STATEPOLICY statelock {
 696                         if (pf->opts & PF_OPT_VERBOSE)
 697                                 switch ($3) {
 698                                 case 0:
 699                                         printf("set state-policy floating\n");
 700                                         break;
 701                                 case PFRULE_IFBOUND:
 702                                         printf("set state-policy if-bound\n");
 703                                         break;
 704                                 }
 705                         default_statelock = $3;
 706                 }
 707                 | SET DEBUG STRING {
 708                         if (check_rulestate(PFCTL_STATE_OPTION)) {
 709                                 free($3);
 710                                 YYERROR;
 711                         }
 712                         if (pfctl_set_debug(pf, $3) != 0) {
 713                                 yyerror("error setting debuglevel %s", $3);
 714                                 free($3);
 715                                 YYERROR;
 716                         }
 717                         free($3);
 718                 }
 719                 | SET SKIP interface {
 720                         if (expand_skip_interface($3) != 0) {
 721                                 yyerror("error setting skip interface(s)");
 722                                 YYERROR;
 723                         }
 724                 }
 725                 | SET STATEDEFAULTS state_opt_list {
 726                         if (keep_state_defaults != NULL) {
 727                                 yyerror("cannot redefine state-defaults");
 728                                 YYERROR;
 729                         }
 730                         keep_state_defaults = $3;
 731                 }
 732                 | SET KEEPCOUNTERS {
 733                         pf->keep_counters = true;
 734                 }
 735                 | SET SYNCOOKIES syncookie_val syncookie_opts {
 736                         if (pfctl_cfg_syncookies(pf, $3, $4)) {
 737                                 yyerror("error setting syncookies");
 738                                 YYERROR;
 739                         }
 740                 }
 741                 ;
 742
 743 syncookie_val  : STRING        {
 744                         if (!strcmp($1, "never"))
 745                                 $$ = PFCTL_SYNCOOKIES_NEVER;
 746                         else if (!strcmp($1, "adaptive"))
 747                                 $$ = PFCTL_SYNCOOKIES_ADAPTIVE;
 748                         else if (!strcmp($1, "always"))
 749                                 $$ = PFCTL_SYNCOOKIES_ALWAYS;
 750                         else {
 751                                 yyerror("illegal value for syncookies");
 752                                 YYERROR;
 753                         }
 754                 }
 755                 ;
 756 syncookie_opts  : /* empty */                   { $$ = NULL; }
 757                 | {
 758                         memset(&syncookie_opts, 0, sizeof(syncookie_opts));
 759                   } '(' syncookie_opt_l ')'     { $$ = &syncookie_opts; }
 760                 ;
 761
 762 syncookie_opt_l : syncookie_opt_l comma syncookie_opt
 763                 | syncookie_opt
 764                 ;
 765
 766 syncookie_opt   : STRING STRING {
 767                         double   val;
 768                         char    *cp;
 769
 770                         val = strtod($2, &cp);
 771                         if (cp == NULL || strcmp(cp, "%"))
 772                                 YYERROR;
 773                         if (val <= 0 || val > 100) {
 774                                 yyerror("illegal percentage value");
 775                                 YYERROR;
 776                         }
 777                         if (!strcmp($1, "start")) {
 778                                 syncookie_opts.hi = val;
 779                         } else if (!strcmp($1, "end")) {
 780                                 syncookie_opts.lo = val;
 781                         } else {
 782                                 yyerror("illegal syncookie option");
 783                                 YYERROR;
 784                         }
 785                 }
 786                 ;
 787
 788 stringall       : STRING        { $$ = $1; }
 789                 | ALL           {
 790                         if (($$ = strdup("all")) == NULL) {
 791                                 err(1, "stringall: strdup");
 792                         }
 793                 }
 794                 ;
 795
 796 string          : STRING string                         {
 797                         if (asprintf(&$$, "%s %s", $1, $2) == -1)
 798                                 err(1, "string: asprintf");
 799                         free($1);
 800                         free($2);
 801                 }
 802                 | STRING
 803                 ;
 804
 805 varstring       : numberstring varstring                {
 806                         if (asprintf(&$$, "%s %s", $1, $2) == -1)
 807                                 err(1, "string: asprintf");
 808                         free($1);
 809                         free($2);
 810                 }
 811                 | numberstring
 812                 ;
 813
 814 numberstring    : NUMBER                                {
 815                         char    *s;
 816                         if (asprintf(&s, "%lld", (long long)$1) == -1) {
 817                                 yyerror("string: asprintf");
 818                                 YYERROR;
 819                         }
 820                         $$ = s;
 821                 }
 822                 | STRING
 823                 ;
 824
 825 varset          : STRING '=' varstring  {
 826                         char *s = $1;
 827                         if (pf->opts & PF_OPT_VERBOSE)
 828                                 printf("%s = \"%s\"\n", $1, $3);
 829                         while (*s++) {
 830                                 if (isspace((unsigned char)*s)) {
 831                                         yyerror("macro name cannot contain "
 832                                            "whitespace");
 833                                         YYERROR;
 834                                 }
 835                         }
 836                         if (symset($1, $3, 0) == -1)
 837                                 err(1, "cannot store variable %s", $1);
 838                         free($1);
 839                         free($3);
 840                 }
 841                 ;
 842
 843 anchorname      : STRING                        { $$ = $1; }
 844                 | /* empty */                   { $$ = NULL; }
 845                 ;
 846
 847 pfa_anchorlist  : /* empty */
 848                 | pfa_anchorlist '\n'
 849                 | pfa_anchorlist pfrule '\n'
 850                 | pfa_anchorlist anchorrule '\n'
 851                 ;
 852
 853 pfa_anchor      : '{'
 854                 {
 855                         char ta[PF_ANCHOR_NAME_SIZE];
 856                         struct pfctl_ruleset *rs;
 857
 858                         /* steping into a brace anchor */
 859                         pf->asd++;
 860                         pf->bn++;
 861
 862                         /* create a holding ruleset in the root */
 863                         snprintf(ta, PF_ANCHOR_NAME_SIZE, "_%d", pf->bn);
 864                         rs = pf_find_or_create_ruleset(ta);
 865                         if (rs == NULL)
 866                                 err(1, "pfa_anchor: pf_find_or_create_ruleset");
 867                         pf->astack[pf->asd] = rs->anchor;
 868                         pf->anchor = rs->anchor;
 869                 } '\n' pfa_anchorlist '}'
 870                 {
 871                         pf->alast = pf->anchor;
 872                         pf->asd--;
 873                         pf->anchor = pf->astack[pf->asd];
 874                 }
 875                 | /* empty */
 876                 ;
 877
 878 anchorrule      : ANCHOR anchorname dir quick interface af proto fromto
 879                     filter_opts pfa_anchor
 880                 {
 881                         struct pfctl_rule       r;
 882                         struct node_proto       *proto;
 883
 884                         if (check_rulestate(PFCTL_STATE_FILTER)) {
 885                                 if ($2)
 886                                         free($2);
 887                                 YYERROR;
 888                         }
 889
 890                         if ($2 && ($2[0] == '_' || strstr($2, "/_") != NULL)) {
 891                                 free($2);
 892                                 yyerror("anchor names beginning with '_' "
 893                                     "are reserved for internal use");
 894                                 YYERROR;
 895                         }
 896
 897                         memset(&r, 0, sizeof(r));
 898                         if (pf->astack[pf->asd + 1]) {
 899                                 /* move inline rules into relative location */
 900                                 pfctl_anchor_setup(&r,
 901                                     &pf->astack[pf->asd]->ruleset,
 902                                     $2 ? $2 : pf->alast->name);
 903
 904                                 if (r.anchor == NULL)
 905                                         err(1, "anchorrule: unable to "
 906                                             "create ruleset");
 907
 908                                 if (pf->alast != r.anchor) {
 909                                         if (r.anchor->match) {
 910                                                 yyerror("inline anchor '%s' "
 911                                                     "already exists",
 912                                                     r.anchor->name);
 913                                                 YYERROR;
 914                                         }
 915                                         mv_rules(&pf->alast->ruleset,
 916                                             &r.anchor->ruleset);
 917                                 }
 918                                 pf_remove_if_empty_ruleset(&pf->alast->ruleset);
 919                                 pf->alast = r.anchor;
 920                         } else {
 921                                 if (!$2) {
 922                                         yyerror("anchors without explicit "
 923                                             "rules must specify a name");
 924                                         YYERROR;
 925                                 }
 926                         }
 927                         r.direction = $3;
 928                         r.quick = $4.quick;
 929                         r.af = $6;
 930                         r.prob = $9.prob;
 931                         r.rtableid = $9.rtableid;
 932                         r.ridentifier = $9.ridentifier;
 933
 934                         if ($9.tag)
 935                                 if (strlcpy(r.tagname, $9.tag,
 936                                     PF_TAG_NAME_SIZE) >= PF_TAG_NAME_SIZE) {
 937                                         yyerror("tag too long, max %u chars",
 938                                             PF_TAG_NAME_SIZE - 1);
 939                                         YYERROR;
 940                                 }
 941                         if ($9.match_tag)
 942                                 if (strlcpy(r.match_tagname, $9.match_tag,
 943                                     PF_TAG_NAME_SIZE) >= PF_TAG_NAME_SIZE) {
 944                                         yyerror("tag too long, max %u chars",
 945                                             PF_TAG_NAME_SIZE - 1);
 946                                         YYERROR;
 947                                 }
 948                         r.match_tag_not = $9.match_tag_not;
 949                         if (rule_label(&r, $9.label))
 950                                 YYERROR;
 951                         for (int i = 0; i < PF_RULE_MAX_LABEL_COUNT; i++)
 952                                 free($9.label[i]);
 953                         r.flags = $9.flags.b1;
 954                         r.flagset = $9.flags.b2;
 955                         if (($9.flags.b1 & $9.flags.b2) != $9.flags.b1) {
 956                                 yyerror("flags always false");
 957                                 YYERROR;
 958                         }
 959                         if ($9.flags.b1 || $9.flags.b2 || $8.src_os) {
 960                                 for (proto = $7; proto != NULL &&
 961                                     proto->proto != IPPROTO_TCP;
 962                                     proto = proto->next)
 963                                         ;       /* nothing */
 964                                 if (proto == NULL && $7 != NULL) {
 965                                         if ($9.flags.b1 || $9.flags.b2)
 966                                                 yyerror(
 967                                                     "flags only apply to tcp");
 968                                         if ($8.src_os)
 969                                                 yyerror(
 970                                                     "OS fingerprinting only "
 971                                                     "applies to tcp");
 972                                         YYERROR;
 973                                 }
 974                         }
 975
 976                         r.tos = $9.tos;
 977
 978                         if ($9.keep.action) {
 979                                 yyerror("cannot specify state handling "
 980                                     "on anchors");
 981                                 YYERROR;
 982                         }
 983
 984                         if ($9.match_tag)
 985                                 if (strlcpy(r.match_tagname, $9.match_tag,
 986                                     PF_TAG_NAME_SIZE) >= PF_TAG_NAME_SIZE) {
 987                                         yyerror("tag too long, max %u chars",
 988                                             PF_TAG_NAME_SIZE - 1);
 989                                         YYERROR;
 990                                 }
 991                         r.match_tag_not = $9.match_tag_not;
 992                         if ($9.marker & FOM_PRIO) {
 993                                 if ($9.prio == 0)
 994                                         r.prio = PF_PRIO_ZERO;
 995                                 else
 996                                         r.prio = $9.prio;
 997                         }
 998                         if ($9.marker & FOM_SETPRIO) {
 999                                 r.set_prio[0] = $9.set_prio[0];
1000                                 r.set_prio[1] = $9.set_prio[1];
1001                                 r.scrub_flags |= PFSTATE_SETPRIO;
1002                         }
1003
1004                         decide_address_family($8.src.host, &r.af);
1005                         decide_address_family($8.dst.host, &r.af);
1006
1007                         expand_rule(&r, $5, NULL, $7, $8.src_os,
1008                             $8.src.host, $8.src.port, $8.dst.host, $8.dst.port,
1009                             $9.uid, $9.gid, $9.icmpspec,
1010                             pf->astack[pf->asd + 1] ? pf->alast->name : $2);
1011                         free($2);
1012                         pf->astack[pf->asd + 1] = NULL;
1013                 }
1014                 | NATANCHOR string interface af proto fromto rtable {
1015                         struct pfctl_rule       r;
1016
1017                         if (check_rulestate(PFCTL_STATE_NAT)) {
1018                                 free($2);
1019                                 YYERROR;
1020                         }
1021
1022                         memset(&r, 0, sizeof(r));
1023                         r.action = PF_NAT;
1024                         r.af = $4;
1025                         r.rtableid = $7;
1026
1027                         decide_address_family($6.src.host, &r.af);
1028                         decide_address_family($6.dst.host, &r.af);
1029
1030                         expand_rule(&r, $3, NULL, $5, $6.src_os,
1031                             $6.src.host, $6.src.port, $6.dst.host, $6.dst.port,
1032                             0, 0, 0, $2);
1033                         free($2);
1034                 }
1035                 | RDRANCHOR string interface af proto fromto rtable {
1036                         struct pfctl_rule       r;
1037
1038                         if (check_rulestate(PFCTL_STATE_NAT)) {
1039                                 free($2);
1040                                 YYERROR;
1041                         }
1042
1043                         memset(&r, 0, sizeof(r));
1044                         r.action = PF_RDR;
1045                         r.af = $4;
1046                         r.rtableid = $7;
1047
1048                         decide_address_family($6.src.host, &r.af);
1049                         decide_address_family($6.dst.host, &r.af);
1050
1051                         if ($6.src.port != NULL) {
1052                                 yyerror("source port parameter not supported"
1053                                     " in rdr-anchor");
1054                                 YYERROR;
1055                         }
1056                         if ($6.dst.port != NULL) {
1057                                 if ($6.dst.port->next != NULL) {
1058                                         yyerror("destination port list "
1059                                             "expansion not supported in "
1060                                             "rdr-anchor");
1061                                         YYERROR;
1062                                 } else if ($6.dst.port->op != PF_OP_EQ) {
1063                                         yyerror("destination port operators"
1064                                             " not supported in rdr-anchor");
1065                                         YYERROR;
1066                                 }
1067                                 r.dst.port[0] = $6.dst.port->port[0];
1068                                 r.dst.port[1] = $6.dst.port->port[1];
1069                                 r.dst.port_op = $6.dst.port->op;
1070                         }
1071
1072                         expand_rule(&r, $3, NULL, $5, $6.src_os,
1073                             $6.src.host, $6.src.port, $6.dst.host, $6.dst.port,
1074                             0, 0, 0, $2);
1075                         free($2);
1076                 }
1077                 | BINATANCHOR string interface af proto fromto rtable {
1078                         struct pfctl_rule       r;
1079
1080                         if (check_rulestate(PFCTL_STATE_NAT)) {
1081                                 free($2);
1082                                 YYERROR;
1083                         }
1084
1085                         memset(&r, 0, sizeof(r));
1086                         r.action = PF_BINAT;
1087                         r.af = $4;
1088                         r.rtableid = $7;
1089                         if ($5 != NULL) {
1090                                 if ($5->next != NULL) {
1091                                         yyerror("proto list expansion"
1092                                             " not supported in binat-anchor");
1093                                         YYERROR;
1094                                 }
1095                                 r.proto = $5->proto;
1096                                 free($5);
1097                         }
1098
1099                         if ($6.src.host != NULL || $6.src.port != NULL ||
1100                             $6.dst.host != NULL || $6.dst.port != NULL) {
1101                                 yyerror("fromto parameter not supported"
1102                                     " in binat-anchor");
1103                                 YYERROR;
1104                         }
1105
1106                         decide_address_family($6.src.host, &r.af);
1107                         decide_address_family($6.dst.host, &r.af);
1108
1109                         pfctl_append_rule(pf, &r, $2);
1110                         free($2);
1111                 }
1112                 ;
1113
1114 loadrule        : LOAD ANCHOR string FROM string        {
1115                         struct loadanchors      *loadanchor;
1116
1117                         if (strlen(pf->anchor->name) + 1 +
1118                             strlen($3) >= MAXPATHLEN) {
1119                                 yyerror("anchorname %s too long, max %u\n",
1120                                     $3, MAXPATHLEN - 1);
1121                                 free($3);
1122                                 YYERROR;
1123                         }
1124                         loadanchor = calloc(1, sizeof(struct loadanchors));
1125                         if (loadanchor == NULL)
1126                                 err(1, "loadrule: calloc");
1127                         if ((loadanchor->anchorname = malloc(MAXPATHLEN)) ==
1128                             NULL)
1129                                 err(1, "loadrule: malloc");
1130                         if (pf->anchor->name[0])
1131                                 snprintf(loadanchor->anchorname, MAXPATHLEN,
1132                                     "%s/%s", pf->anchor->name, $3);
1133                         else
1134                                 strlcpy(loadanchor->anchorname, $3, MAXPATHLEN);
1135                         if ((loadanchor->filename = strdup($5)) == NULL)
1136                                 err(1, "loadrule: strdup");
1137
1138                         TAILQ_INSERT_TAIL(&loadanchorshead, loadanchor,
1139                             entries);
1140
1141                         free($3);
1142                         free($5);
1143                 };
1144
1145 scrubaction     : no SCRUB {
1146                         $$.b2 = $$.w = 0;
1147                         if ($1)
1148                                 $$.b1 = PF_NOSCRUB;
1149                         else
1150                                 $$.b1 = PF_SCRUB;
1151                 }
1152                 ;
1153
1154 scrubrule       : scrubaction dir logquick interface af proto fromto scrub_opts
1155                 {
1156                         struct pfctl_rule       r;
1157
1158                         if (check_rulestate(PFCTL_STATE_SCRUB))
1159                                 YYERROR;
1160
1161                         memset(&r, 0, sizeof(r));
1162
1163                         r.action = $1.b1;
1164                         r.direction = $2;
1165
1166                         r.log = $3.log;
1167                         r.logif = $3.logif;
1168                         if ($3.quick) {
1169                                 yyerror("scrub rules do not support 'quick'");
1170                                 YYERROR;
1171                         }
1172
1173                         r.af = $5;
1174                         if ($8.nodf)
1175                                 r.rule_flag |= PFRULE_NODF;
1176                         if ($8.randomid)
1177                                 r.rule_flag |= PFRULE_RANDOMID;
1178                         if ($8.reassemble_tcp) {
1179                                 if (r.direction != PF_INOUT) {
1180                                         yyerror("reassemble tcp rules can not "
1181                                             "specify direction");
1182                                         YYERROR;
1183                                 }
1184                                 r.rule_flag |= PFRULE_REASSEMBLE_TCP;
1185                         }
1186                         if ($8.minttl)
1187                                 r.min_ttl = $8.minttl;
1188                         if ($8.maxmss)
1189                                 r.max_mss = $8.maxmss;
1190                         if ($8.marker & SOM_SETTOS) {
1191                                 r.rule_flag |= PFRULE_SET_TOS;
1192                                 r.set_tos = $8.settos;
1193                         }
1194                         if ($8.fragcache)
1195                                 r.rule_flag |= $8.fragcache;
1196                         if ($8.match_tag)
1197                                 if (strlcpy(r.match_tagname, $8.match_tag,
1198                                     PF_TAG_NAME_SIZE) >= PF_TAG_NAME_SIZE) {
1199                                         yyerror("tag too long, max %u chars",
1200                                             PF_TAG_NAME_SIZE - 1);
1201                                         YYERROR;
1202                                 }
1203                         r.match_tag_not = $8.match_tag_not;
1204                         r.rtableid = $8.rtableid;
1205
1206                         expand_rule(&r, $4, NULL, $6, $7.src_os,
1207                             $7.src.host, $7.src.port, $7.dst.host, $7.dst.port,
1208                             NULL, NULL, NULL, "");
1209                 }
1210                 ;
1211
1212 scrub_opts      :       {
1213                                 bzero(&scrub_opts, sizeof scrub_opts);
1214                                 scrub_opts.rtableid = -1;
1215                         }
1216                     scrub_opts_l
1217                         { $$ = scrub_opts; }
1218                 | /* empty */ {
1219                         bzero(&scrub_opts, sizeof scrub_opts);
1220                         scrub_opts.rtableid = -1;
1221                         $$ = scrub_opts;
1222                 }
1223                 ;
1224
1225 scrub_opts_l    : scrub_opts_l scrub_opt
1226                 | scrub_opt
1227                 ;
1228
1229 scrub_opt       : NODF  {
1230                         if (scrub_opts.nodf) {
1231                                 yyerror("no-df cannot be respecified");
1232                                 YYERROR;
1233                         }
1234                         scrub_opts.nodf = 1;
1235                 }
1236                 | MINTTL NUMBER {
1237                         if (scrub_opts.marker & SOM_MINTTL) {
1238                                 yyerror("min-ttl cannot be respecified");
1239                                 YYERROR;
1240                         }
1241                         if ($2 < 0 || $2 > 255) {
1242                                 yyerror("illegal min-ttl value %d", $2);
1243                                 YYERROR;
1244                         }
1245                         scrub_opts.marker |= SOM_MINTTL;
1246                         scrub_opts.minttl = $2;
1247                 }
1248                 | MAXMSS NUMBER {
1249                         if (scrub_opts.marker & SOM_MAXMSS) {
1250                                 yyerror("max-mss cannot be respecified");
1251                                 YYERROR;
1252                         }
1253                         if ($2 < 0 || $2 > 65535) {
1254                                 yyerror("illegal max-mss value %d", $2);
1255                                 YYERROR;
1256                         }
1257                         scrub_opts.marker |= SOM_MAXMSS;
1258                         scrub_opts.maxmss = $2;
1259                 }
1260                 | SETTOS tos {
1261                         if (scrub_opts.marker & SOM_SETTOS) {
1262                                 yyerror("set-tos cannot be respecified");
1263                                 YYERROR;
1264                         }
1265                         scrub_opts.marker |= SOM_SETTOS;
1266                         scrub_opts.settos = $2;
1267                 }
1268                 | fragcache {
1269                         if (scrub_opts.marker & SOM_FRAGCACHE) {
1270                                 yyerror("fragcache cannot be respecified");
1271                                 YYERROR;
1272                         }
1273                         scrub_opts.marker |= SOM_FRAGCACHE;
1274                         scrub_opts.fragcache = $1;
1275                 }
1276                 | REASSEMBLE STRING {
1277                         if (strcasecmp($2, "tcp") != 0) {
1278                                 yyerror("scrub reassemble supports only tcp, "
1279                                     "not '%s'", $2);
1280                                 free($2);
1281                                 YYERROR;
1282                         }
1283                         free($2);
1284                         if (scrub_opts.reassemble_tcp) {
1285                                 yyerror("reassemble tcp cannot be respecified");
1286                                 YYERROR;
1287                         }
1288                         scrub_opts.reassemble_tcp = 1;
1289                 }
1290                 | RANDOMID {
1291                         if (scrub_opts.randomid) {
1292                                 yyerror("random-id cannot be respecified");
1293                                 YYERROR;
1294                         }
1295                         scrub_opts.randomid = 1;
1296                 }
1297                 | RTABLE NUMBER                         {
1298                         if ($2 < 0 || $2 > rt_tableid_max()) {
1299                                 yyerror("invalid rtable id");
1300                                 YYERROR;
1301                         }
1302                         scrub_opts.rtableid = $2;
1303                 }
1304                 | not TAGGED string                     {
1305                         scrub_opts.match_tag = $3;
1306                         scrub_opts.match_tag_not = $1;
1307                 }
1308                 ;
1309
1310 fragcache       : FRAGMENT REASSEMBLE   { $$ = 0; /* default */ }
1311                 | FRAGMENT FRAGCROP     { $$ = 0; }
1312                 | FRAGMENT FRAGDROP     { $$ = 0; }
1313                 ;
1314
1315 antispoof       : ANTISPOOF logquick antispoof_ifspc af antispoof_opts {
1316                         struct pfctl_rule        r;
1317                         struct node_host        *h = NULL, *hh;
1318                         struct node_if          *i, *j;
1319
1320                         if (check_rulestate(PFCTL_STATE_FILTER))
1321                                 YYERROR;
1322
1323                         for (i = $3; i; i = i->next) {
1324                                 bzero(&r, sizeof(r));
1325
1326                                 r.action = PF_DROP;
1327                                 r.direction = PF_IN;
1328                                 r.log = $2.log;
1329                                 r.logif = $2.logif;
1330                                 r.quick = $2.quick;
1331                                 r.af = $4;
1332                                 r.ridentifier = $5.ridentifier;
1333                                 if (rule_label(&r, $5.label))
1334                                         YYERROR;
1335                                 r.rtableid = $5.rtableid;
1336                                 j = calloc(1, sizeof(struct node_if));
1337                                 if (j == NULL)
1338                                         err(1, "antispoof: calloc");
1339                                 if (strlcpy(j->ifname, i->ifname,
1340                                     sizeof(j->ifname)) >= sizeof(j->ifname)) {
1341                                         free(j);
1342                                         yyerror("interface name too long");
1343                                         YYERROR;
1344                                 }
1345                                 j->not = 1;
1346                                 if (i->dynamic) {
1347                                         h = calloc(1, sizeof(*h));
1348                                         if (h == NULL)
1349                                                 err(1, "address: calloc");
1350                                         h->addr.type = PF_ADDR_DYNIFTL;
1351                                         set_ipmask(h, 128);
1352                                         if (strlcpy(h->addr.v.ifname, i->ifname,
1353                                             sizeof(h->addr.v.ifname)) >=
1354                                             sizeof(h->addr.v.ifname)) {
1355                                                 free(h);
1356                                                 yyerror(
1357                                                     "interface name too long");
1358                                                 YYERROR;
1359                                         }
1360                                         hh = malloc(sizeof(*hh));
1361                                         if (hh == NULL)
1362                                                  err(1, "address: malloc");
1363                                         bcopy(h, hh, sizeof(*hh));
1364                                         h->addr.iflags = PFI_AFLAG_NETWORK;
1365                                 } else {
1366                                         h = ifa_lookup(j->ifname,
1367                                             PFI_AFLAG_NETWORK);
1368                                         hh = NULL;
1369                                 }
1370
1371                                 if (h != NULL)
1372                                         expand_rule(&r, j, NULL, NULL, NULL, h,
1373                                             NULL, NULL, NULL, NULL, NULL,
1374                                             NULL, "");
1375
1376                                 if ((i->ifa_flags & IFF_LOOPBACK) == 0) {
1377                                         bzero(&r, sizeof(r));
1378
1379                                         r.action = PF_DROP;
1380                                         r.direction = PF_IN;
1381                                         r.log = $2.log;
1382                                         r.logif = $2.logif;
1383                                         r.quick = $2.quick;
1384                                         r.af = $4;
1385                                         r.ridentifier = $5.ridentifier;
1386                                         if (rule_label(&r, $5.label))
1387                                                 YYERROR;
1388                                         r.rtableid = $5.rtableid;
1389                                         if (hh != NULL)
1390                                                 h = hh;
1391                                         else
1392                                                 h = ifa_lookup(i->ifname, 0);
1393                                         if (h != NULL)
1394                                                 expand_rule(&r, NULL, NULL,
1395                                                     NULL, NULL, h, NULL, NULL,
1396                                                     NULL, NULL, NULL, NULL, "");
1397                                 } else
1398                                         free(hh);
1399                         }
1400                         for (int i = 0; i < PF_RULE_MAX_LABEL_COUNT; i++)
1401                                 free($5.label[i]);
1402                 }
1403                 ;
1404
1405 antispoof_ifspc : FOR antispoof_if                      { $$ = $2; }
1406                 | FOR '{' optnl antispoof_iflst '}'     { $$ = $4; }
1407                 ;
1408
1409 antispoof_iflst : antispoof_if optnl                    { $$ = $1; }
1410                 | antispoof_iflst comma antispoof_if optnl {
1411                         $1->tail->next = $3;
1412                         $1->tail = $3;
1413                         $$ = $1;
1414                 }
1415                 ;
1416
1417 antispoof_if    : if_item                               { $$ = $1; }
1418                 | '(' if_item ')'                       {
1419                         $2->dynamic = 1;
1420                         $$ = $2;
1421                 }
1422                 ;
1423
1424 antispoof_opts  :       {
1425                                 bzero(&antispoof_opts, sizeof antispoof_opts);
1426                                 antispoof_opts.rtableid = -1;
1427                         }
1428                     antispoof_opts_l
1429                         { $$ = antispoof_opts; }
1430                 | /* empty */   {
1431                         bzero(&antispoof_opts, sizeof antispoof_opts);
1432                         antispoof_opts.rtableid = -1;
1433                         $$ = antispoof_opts;
1434                 }
1435                 ;
1436
1437 antispoof_opts_l        : antispoof_opts_l antispoof_opt
1438                         | antispoof_opt
1439                         ;
1440
1441 antispoof_opt   : label {
1442                         if (antispoof_opts.labelcount >= PF_RULE_MAX_LABEL_COUNT) {
1443                                 yyerror("label can only be used %d times", PF_RULE_MAX_LABEL_COUNT);
1444                                 YYERROR;
1445                         }
1446                         antispoof_opts.label[antispoof_opts.labelcount++] = $1;
1447                 }
1448                 | RIDENTIFIER number {
1449                         antispoof_opts.ridentifier = $2;
1450                 }
1451                 | RTABLE NUMBER                         {
1452                         if ($2 < 0 || $2 > rt_tableid_max()) {
1453                                 yyerror("invalid rtable id");
1454                                 YYERROR;
1455                         }
1456                         antispoof_opts.rtableid = $2;
1457                 }
1458                 ;
1459
1460 not             : '!'           { $$ = 1; }
1461                 | /* empty */   { $$ = 0; }
1462                 ;
1463
1464 tabledef        : TABLE '<' STRING '>' table_opts {
1465                         struct node_host         *h, *nh;
1466                         struct node_tinit        *ti, *nti;
1467
1468                         if (strlen($3) >= PF_TABLE_NAME_SIZE) {
1469                                 yyerror("table name too long, max %d chars",
1470                                     PF_TABLE_NAME_SIZE - 1);
1471                                 free($3);
1472                                 YYERROR;
1473                         }
1474                         if (pf->loadopt & PFCTL_FLAG_TABLE)
1475                                 if (process_tabledef($3, &$5)) {
1476                                         free($3);
1477                                         YYERROR;
1478                                 }
1479                         free($3);
1480                         for (ti = SIMPLEQ_FIRST(&$5.init_nodes);
1481                             ti != SIMPLEQ_END(&$5.init_nodes); ti = nti) {
1482                                 if (ti->file)
1483                                         free(ti->file);
1484                                 for (h = ti->host; h != NULL; h = nh) {
1485                                         nh = h->next;
1486                                         free(h);
1487                                 }
1488                                 nti = SIMPLEQ_NEXT(ti, entries);
1489                                 free(ti);
1490                         }
1491                 }
1492                 ;
1493
1494 table_opts      :       {
1495                         bzero(&table_opts, sizeof table_opts);
1496                         SIMPLEQ_INIT(&table_opts.init_nodes);
1497                 }
1498                     table_opts_l
1499                         { $$ = table_opts; }
1500                 | /* empty */
1501                         {
1502                         bzero(&table_opts, sizeof table_opts);
1503                         SIMPLEQ_INIT(&table_opts.init_nodes);
1504                         $$ = table_opts;
1505                 }
1506                 ;
1507
1508 table_opts_l    : table_opts_l table_opt
1509                 | table_opt
1510                 ;
1511
1512 table_opt       : STRING                {
1513                         if (!strcmp($1, "const"))
1514                                 table_opts.flags |= PFR_TFLAG_CONST;
1515                         else if (!strcmp($1, "persist"))
1516                                 table_opts.flags |= PFR_TFLAG_PERSIST;
1517                         else if (!strcmp($1, "counters"))
1518                                 table_opts.flags |= PFR_TFLAG_COUNTERS;
1519                         else {
1520                                 yyerror("invalid table option '%s'", $1);
1521                                 free($1);
1522                                 YYERROR;
1523                         }
1524                         free($1);
1525                 }
1526                 | '{' optnl '}'         { table_opts.init_addr = 1; }
1527                 | '{' optnl host_list '}'       {
1528                         struct node_host        *n;
1529                         struct node_tinit       *ti;
1530
1531                         for (n = $3; n != NULL; n = n->next) {
1532                                 switch (n->addr.type) {
1533                                 case PF_ADDR_ADDRMASK:
1534                                         continue; /* ok */
1535                                 case PF_ADDR_RANGE:
1536                                         yyerror("address ranges are not "
1537                                             "permitted inside tables");
1538                                         break;
1539                                 case PF_ADDR_DYNIFTL:
1540                                         yyerror("dynamic addresses are not "
1541                                             "permitted inside tables");
1542                                         break;
1543                                 case PF_ADDR_TABLE:
1544                                         yyerror("tables cannot contain tables");
1545                                         break;
1546                                 case PF_ADDR_NOROUTE:
1547                                         yyerror("\"no-route\" is not permitted "
1548                                             "inside tables");
1549                                         break;
1550                                 case PF_ADDR_URPFFAILED:
1551                                         yyerror("\"urpf-failed\" is not "
1552                                             "permitted inside tables");
1553                                         break;
1554                                 default:
1555                                         yyerror("unknown address type %d",
1556                                             n->addr.type);
1557                                 }
1558                                 YYERROR;
1559                         }
1560                         if (!(ti = calloc(1, sizeof(*ti))))
1561                                 err(1, "table_opt: calloc");
1562                         ti->host = $3;
1563                         SIMPLEQ_INSERT_TAIL(&table_opts.init_nodes, ti,
1564                             entries);
1565                         table_opts.init_addr = 1;
1566                 }
1567                 | FILENAME STRING       {
1568                         struct node_tinit       *ti;
1569
1570                         if (!(ti = calloc(1, sizeof(*ti))))
1571                                 err(1, "table_opt: calloc");
1572                         ti->file = $2;
1573                         SIMPLEQ_INSERT_TAIL(&table_opts.init_nodes, ti,
1574                             entries);
1575                         table_opts.init_addr = 1;
1576                 }
1577                 ;
1578
1579 altqif          : ALTQ interface queue_opts QUEUE qassign {
1580                         struct pf_altq  a;
1581
1582                         if (check_rulestate(PFCTL_STATE_QUEUE))
1583                                 YYERROR;
1584
1585                         memset(&a, 0, sizeof(a));
1586                         if ($3.scheduler.qtype == ALTQT_NONE) {
1587                                 yyerror("no scheduler specified!");
1588                                 YYERROR;
1589                         }
1590                         a.scheduler = $3.scheduler.qtype;
1591                         a.qlimit = $3.qlimit;
1592                         a.tbrsize = $3.tbrsize;
1593                         if ($5 == NULL && $3.scheduler.qtype != ALTQT_CODEL) {
1594                                 yyerror("no child queues specified");
1595                                 YYERROR;
1596                         }
1597                         if (expand_altq(&a, $2, $5, $3.queue_bwspec,
1598                             &$3.scheduler))
1599                                 YYERROR;
1600                 }
1601                 ;
1602
1603 queuespec       : QUEUE STRING interface queue_opts qassign {
1604                         struct pf_altq  a;
1605
1606                         if (check_rulestate(PFCTL_STATE_QUEUE)) {
1607                                 free($2);
1608                                 YYERROR;
1609                         }
1610
1611                         memset(&a, 0, sizeof(a));
1612
1613                         if (strlcpy(a.qname, $2, sizeof(a.qname)) >=
1614                             sizeof(a.qname)) {
1615                                 yyerror("queue name too long (max "
1616                                     "%d chars)", PF_QNAME_SIZE-1);
1617                                 free($2);
1618                                 YYERROR;
1619                         }
1620                         free($2);
1621                         if ($4.tbrsize) {
1622                                 yyerror("cannot specify tbrsize for queue");
1623                                 YYERROR;
1624                         }
1625                         if ($4.priority > 255) {
1626                                 yyerror("priority out of range: max 255");
1627                                 YYERROR;
1628                         }
1629                         a.priority = $4.priority;
1630                         a.qlimit = $4.qlimit;
1631                         a.scheduler = $4.scheduler.qtype;
1632                         if (expand_queue(&a, $3, $5, $4.queue_bwspec,
1633                             &$4.scheduler)) {
1634                                 yyerror("errors in queue definition");
1635                                 YYERROR;
1636                         }
1637                 }
1638                 ;
1639
1640 queue_opts      :       {
1641                         bzero(&queue_opts, sizeof queue_opts);
1642                         queue_opts.priority = DEFAULT_PRIORITY;
1643                         queue_opts.qlimit = DEFAULT_QLIMIT;
1644                         queue_opts.scheduler.qtype = ALTQT_NONE;
1645                         queue_opts.queue_bwspec.bw_percent = 100;
1646                 }
1647                     queue_opts_l
1648                         { $$ = queue_opts; }
1649                 | /* empty */ {
1650                         bzero(&queue_opts, sizeof queue_opts);
1651                         queue_opts.priority = DEFAULT_PRIORITY;
1652                         queue_opts.qlimit = DEFAULT_QLIMIT;
1653                         queue_opts.scheduler.qtype = ALTQT_NONE;
1654                         queue_opts.queue_bwspec.bw_percent = 100;
1655                         $$ = queue_opts;
1656                 }
1657                 ;
1658
1659 queue_opts_l    : queue_opts_l queue_opt
1660                 | queue_opt
1661                 ;
1662
1663 queue_opt       : BANDWIDTH bandwidth   {
1664                         if (queue_opts.marker & QOM_BWSPEC) {
1665                                 yyerror("bandwidth cannot be respecified");
1666                                 YYERROR;
1667                         }
1668                         queue_opts.marker |= QOM_BWSPEC;
1669                         queue_opts.queue_bwspec = $2;
1670                 }
1671                 | PRIORITY NUMBER       {
1672                         if (queue_opts.marker & QOM_PRIORITY) {
1673                                 yyerror("priority cannot be respecified");
1674                                 YYERROR;
1675                         }
1676                         if ($2 < 0 || $2 > 255) {
1677                                 yyerror("priority out of range: max 255");
1678                                 YYERROR;
1679                         }
1680                         queue_opts.marker |= QOM_PRIORITY;
1681                         queue_opts.priority = $2;
1682                 }
1683                 | QLIMIT NUMBER {
1684                         if (queue_opts.marker & QOM_QLIMIT) {
1685                                 yyerror("qlimit cannot be respecified");
1686                                 YYERROR;
1687                         }
1688                         if ($2 < 0 || $2 > 65535) {
1689                                 yyerror("qlimit out of range: max 65535");
1690                                 YYERROR;
1691                         }
1692                         queue_opts.marker |= QOM_QLIMIT;
1693                         queue_opts.qlimit = $2;
1694                 }
1695                 | scheduler     {
1696                         if (queue_opts.marker & QOM_SCHEDULER) {
1697                                 yyerror("scheduler cannot be respecified");
1698                                 YYERROR;
1699                         }
1700                         queue_opts.marker |= QOM_SCHEDULER;
1701                         queue_opts.scheduler = $1;
1702                 }
1703                 | TBRSIZE NUMBER        {
1704                         if (queue_opts.marker & QOM_TBRSIZE) {
1705                                 yyerror("tbrsize cannot be respecified");
1706                                 YYERROR;
1707                         }
1708                         if ($2 < 0 || $2 > UINT_MAX) {
1709                                 yyerror("tbrsize too big: max %u", UINT_MAX);
1710                                 YYERROR;
1711                         }
1712                         queue_opts.marker |= QOM_TBRSIZE;
1713                         queue_opts.tbrsize = $2;
1714                 }
1715                 ;
1716
1717 bandwidth       : STRING {
1718                         double   bps;
1719                         char    *cp;
1720
1721                         $$.bw_percent = 0;
1722
1723                         bps = strtod($1, &cp);
1724                         if (cp != NULL) {
1725                                 if (strlen(cp) > 1) {
1726                                         char *cu = cp + 1;
1727                                         if (!strcmp(cu, "Bit") ||
1728                                             !strcmp(cu, "B") ||
1729                                             !strcmp(cu, "bit") ||
1730                                             !strcmp(cu, "b")) {
1731                                                 *cu = 0;
1732                                         }
1733                                 }
1734                                 if (!strcmp(cp, "b"))
1735                                         ; /* nothing */
1736                                 else if (!strcmp(cp, "K"))
1737                                         bps *= 1000;
1738                                 else if (!strcmp(cp, "M"))
1739                                         bps *= 1000 * 1000;
1740                                 else if (!strcmp(cp, "G"))
1741                                         bps *= 1000 * 1000 * 1000;
1742                                 else if (!strcmp(cp, "%")) {
1743                                         if (bps < 0 || bps > 100) {
1744                                                 yyerror("bandwidth spec "
1745                                                     "out of range");
1746                                                 free($1);
1747                                                 YYERROR;
1748                                         }
1749                                         $$.bw_percent = bps;
1750                                         bps = 0;
1751                                 } else {
1752                                         yyerror("unknown unit %s", cp);
1753                                         free($1);
1754                                         YYERROR;
1755                                 }
1756                         }
1757                         free($1);
1758                         $$.bw_absolute = (u_int64_t)bps;
1759                 }
1760                 | NUMBER {
1761                         if ($1 < 0 || $1 >= LLONG_MAX) {
1762                                 yyerror("bandwidth number too big");
1763                                 YYERROR;
1764                         }
1765                         $$.bw_percent = 0;
1766                         $$.bw_absolute = $1;
1767                 }
1768                 ;
1769
1770 scheduler       : CBQ                           {
1771                         $$.qtype = ALTQT_CBQ;
1772                         $$.data.cbq_opts.flags = 0;
1773                 }
1774                 | CBQ '(' cbqflags_list ')'     {
1775                         $$.qtype = ALTQT_CBQ;
1776                         $$.data.cbq_opts.flags = $3;
1777                 }
1778                 | PRIQ                          {
1779                         $$.qtype = ALTQT_PRIQ;
1780                         $$.data.priq_opts.flags = 0;
1781                 }
1782                 | PRIQ '(' priqflags_list ')'   {
1783                         $$.qtype = ALTQT_PRIQ;
1784                         $$.data.priq_opts.flags = $3;
1785                 }
1786                 | HFSC                          {
1787                         $$.qtype = ALTQT_HFSC;
1788                         bzero(&$$.data.hfsc_opts,
1789                             sizeof(struct node_hfsc_opts));
1790                 }
1791                 | HFSC '(' hfsc_opts ')'        {
1792                         $$.qtype = ALTQT_HFSC;
1793                         $$.data.hfsc_opts = $3;
1794                 }
1795                 | FAIRQ                         {
1796                         $$.qtype = ALTQT_FAIRQ;
1797                         bzero(&$$.data.fairq_opts,
1798                                 sizeof(struct node_fairq_opts));
1799                 }
1800                 | FAIRQ '(' fairq_opts ')'      {
1801                         $$.qtype = ALTQT_FAIRQ;
1802                         $$.data.fairq_opts = $3;
1803                 }
1804                 | CODEL                         {
1805                         $$.qtype = ALTQT_CODEL;
1806                         bzero(&$$.data.codel_opts,
1807                                 sizeof(struct codel_opts));
1808                 }
1809                 | CODEL '(' codel_opts ')'      {
1810                         $$.qtype = ALTQT_CODEL;
1811                         $$.data.codel_opts = $3;
1812                 }
1813                 ;
1814
1815 cbqflags_list   : cbqflags_item                         { $$ |= $1; }
1816                 | cbqflags_list comma cbqflags_item     { $$ |= $3; }
1817                 ;
1818
1819 cbqflags_item   : STRING        {
1820                         if (!strcmp($1, "default"))
1821                                 $$ = CBQCLF_DEFCLASS;
1822                         else if (!strcmp($1, "borrow"))
1823                                 $$ = CBQCLF_BORROW;
1824                         else if (!strcmp($1, "red"))
1825                                 $$ = CBQCLF_RED;
1826                         else if (!strcmp($1, "ecn"))
1827                                 $$ = CBQCLF_RED|CBQCLF_ECN;
1828                         else if (!strcmp($1, "rio"))
1829                                 $$ = CBQCLF_RIO;
1830                         else if (!strcmp($1, "codel"))
1831                                 $$ = CBQCLF_CODEL;
1832                         else {
1833                                 yyerror("unknown cbq flag \"%s\"", $1);
1834                                 free($1);
1835                                 YYERROR;
1836                         }
1837                         free($1);
1838                 }
1839                 ;
1840
1841 priqflags_list  : priqflags_item                        { $$ |= $1; }
1842                 | priqflags_list comma priqflags_item   { $$ |= $3; }
1843                 ;
1844
1845 priqflags_item  : STRING        {
1846                         if (!strcmp($1, "default"))
1847                                 $$ = PRCF_DEFAULTCLASS;
1848                         else if (!strcmp($1, "red"))
1849                                 $$ = PRCF_RED;
1850                         else if (!strcmp($1, "ecn"))
1851                                 $$ = PRCF_RED|PRCF_ECN;
1852                         else if (!strcmp($1, "rio"))
1853                                 $$ = PRCF_RIO;
1854                         else if (!strcmp($1, "codel"))
1855                                 $$ = PRCF_CODEL;
1856                         else {
1857                                 yyerror("unknown priq flag \"%s\"", $1);
1858                                 free($1);
1859                                 YYERROR;
1860                         }
1861                         free($1);
1862                 }
1863                 ;
1864
1865 hfsc_opts       :       {
1866                                 bzero(&hfsc_opts,
1867                                     sizeof(struct node_hfsc_opts));
1868                         }
1869                     hfscopts_list                               {
1870                         $$ = hfsc_opts;
1871                 }
1872                 ;
1873
1874 hfscopts_list   : hfscopts_item
1875                 | hfscopts_list comma hfscopts_item
1876                 ;
1877
1878 hfscopts_item   : LINKSHARE bandwidth                           {
1879                         if (hfsc_opts.linkshare.used) {
1880                                 yyerror("linkshare already specified");
1881                                 YYERROR;
1882                         }
1883                         hfsc_opts.linkshare.m2 = $2;
1884                         hfsc_opts.linkshare.used = 1;
1885                 }
1886                 | LINKSHARE '(' bandwidth comma NUMBER comma bandwidth ')'
1887                     {
1888                         if ($5 < 0 || $5 > INT_MAX) {
1889                                 yyerror("timing in curve out of range");
1890                                 YYERROR;
1891                         }
1892                         if (hfsc_opts.linkshare.used) {
1893                                 yyerror("linkshare already specified");
1894                                 YYERROR;
1895                         }
1896                         hfsc_opts.linkshare.m1 = $3;
1897                         hfsc_opts.linkshare.d = $5;
1898                         hfsc_opts.linkshare.m2 = $7;
1899                         hfsc_opts.linkshare.used = 1;
1900                 }
1901                 | REALTIME bandwidth                            {
1902                         if (hfsc_opts.realtime.used) {
1903                                 yyerror("realtime already specified");
1904                                 YYERROR;
1905                         }
1906                         hfsc_opts.realtime.m2 = $2;
1907                         hfsc_opts.realtime.used = 1;
1908                 }
1909                 | REALTIME '(' bandwidth comma NUMBER comma bandwidth ')'
1910                     {
1911                         if ($5 < 0 || $5 > INT_MAX) {
1912                                 yyerror("timing in curve out of range");
1913                                 YYERROR;
1914                         }
1915                         if (hfsc_opts.realtime.used) {
1916                                 yyerror("realtime already specified");
1917                                 YYERROR;
1918                         }
1919                         hfsc_opts.realtime.m1 = $3;
1920                         hfsc_opts.realtime.d = $5;
1921                         hfsc_opts.realtime.m2 = $7;
1922                         hfsc_opts.realtime.used = 1;
1923                 }
1924                 | UPPERLIMIT bandwidth                          {
1925                         if (hfsc_opts.upperlimit.used) {
1926                                 yyerror("upperlimit already specified");
1927                                 YYERROR;
1928                         }
1929                         hfsc_opts.upperlimit.m2 = $2;
1930                         hfsc_opts.upperlimit.used = 1;
1931                 }
1932                 | UPPERLIMIT '(' bandwidth comma NUMBER comma bandwidth ')'
1933                     {
1934                         if ($5 < 0 || $5 > INT_MAX) {
1935                                 yyerror("timing in curve out of range");
1936                                 YYERROR;
1937                         }
1938                         if (hfsc_opts.upperlimit.used) {
1939                                 yyerror("upperlimit already specified");
1940                                 YYERROR;
1941                         }
1942                         hfsc_opts.upperlimit.m1 = $3;
1943                         hfsc_opts.upperlimit.d = $5;
1944                         hfsc_opts.upperlimit.m2 = $7;
1945                         hfsc_opts.upperlimit.used = 1;
1946                 }
1947                 | STRING        {
1948                         if (!strcmp($1, "default"))
1949                                 hfsc_opts.flags |= HFCF_DEFAULTCLASS;
1950                         else if (!strcmp($1, "red"))
1951                                 hfsc_opts.flags |= HFCF_RED;
1952                         else if (!strcmp($1, "ecn"))
1953                                 hfsc_opts.flags |= HFCF_RED|HFCF_ECN;
1954                         else if (!strcmp($1, "rio"))
1955                                 hfsc_opts.flags |= HFCF_RIO;
1956                         else if (!strcmp($1, "codel"))
1957                                 hfsc_opts.flags |= HFCF_CODEL;
1958                         else {
1959                                 yyerror("unknown hfsc flag \"%s\"", $1);
1960                                 free($1);
1961                                 YYERROR;
1962                         }
1963                         free($1);
1964                 }
1965                 ;
1966
1967 fairq_opts      :       {
1968                                 bzero(&fairq_opts,
1969                                     sizeof(struct node_fairq_opts));
1970                         }
1971                     fairqopts_list                              {
1972                         $$ = fairq_opts;
1973                 }
1974                 ;
1975
1976 fairqopts_list  : fairqopts_item
1977                 | fairqopts_list comma fairqopts_item
1978                 ;
1979
1980 fairqopts_item  : LINKSHARE bandwidth                           {
1981                         if (fairq_opts.linkshare.used) {
1982                                 yyerror("linkshare already specified");
1983                                 YYERROR;
1984                         }
1985                         fairq_opts.linkshare.m2 = $2;
1986                         fairq_opts.linkshare.used = 1;
1987                 }
1988                 | LINKSHARE '(' bandwidth number bandwidth ')'  {
1989                         if (fairq_opts.linkshare.used) {
1990                                 yyerror("linkshare already specified");
1991                                 YYERROR;
1992                         }
1993                         fairq_opts.linkshare.m1 = $3;
1994                         fairq_opts.linkshare.d = $4;
1995                         fairq_opts.linkshare.m2 = $5;
1996                         fairq_opts.linkshare.used = 1;
1997                 }
1998                 | HOGS bandwidth {
1999                         fairq_opts.hogs_bw = $2;
2000                 }
2001                 | BUCKETS number {
2002                         fairq_opts.nbuckets = $2;
2003                 }
2004                 | STRING        {
2005                         if (!strcmp($1, "default"))
2006                                 fairq_opts.flags |= FARF_DEFAULTCLASS;
2007                         else if (!strcmp($1, "red"))
2008                                 fairq_opts.flags |= FARF_RED;
2009                         else if (!strcmp($1, "ecn"))
2010                                 fairq_opts.flags |= FARF_RED|FARF_ECN;
2011                         else if (!strcmp($1, "rio"))
2012                                 fairq_opts.flags |= FARF_RIO;
2013                         else if (!strcmp($1, "codel"))
2014                                 fairq_opts.flags |= FARF_CODEL;
2015                         else {
2016                                 yyerror("unknown fairq flag \"%s\"", $1);
2017                                 free($1);
2018                                 YYERROR;
2019                         }
2020                         free($1);
2021                 }
2022                 ;
2023
2024 codel_opts      :       {
2025                                 bzero(&codel_opts,
2026                                     sizeof(struct codel_opts));
2027                         }
2028                     codelopts_list                              {
2029                         $$ = codel_opts;
2030                 }
2031                 ;
2032
2033 codelopts_list  : codelopts_item
2034                 | codelopts_list comma codelopts_item
2035                 ;
2036
2037 codelopts_item  : INTERVAL number                               {
2038                         if (codel_opts.interval) {
2039                                 yyerror("interval already specified");
2040                                 YYERROR;
2041                         }
2042                         codel_opts.interval = $2;
2043                 }
2044                 | TARGET number                                 {
2045                         if (codel_opts.target) {
2046                                 yyerror("target already specified");
2047                                 YYERROR;
2048                         }
2049                         codel_opts.target = $2;
2050                 }
2051                 | STRING                                        {
2052                         if (!strcmp($1, "ecn"))
2053                                 codel_opts.ecn = 1;
2054                         else {
2055                                 yyerror("unknown codel option \"%s\"", $1);
2056                                 free($1);
2057                                 YYERROR;
2058                         }
2059                         free($1);
2060                 }
2061                 ;
2062
2063 qassign         : /* empty */           { $$ = NULL; }
2064                 | qassign_item          { $$ = $1; }
2065                 | '{' optnl qassign_list '}'    { $$ = $3; }
2066                 ;
2067
2068 qassign_list    : qassign_item optnl            { $$ = $1; }
2069                 | qassign_list comma qassign_item optnl {
2070                         $1->tail->next = $3;
2071                         $1->tail = $3;
2072                         $$ = $1;
2073                 }
2074                 ;
2075
2076 qassign_item    : STRING                        {
2077                         $$ = calloc(1, sizeof(struct node_queue));
2078                         if ($$ == NULL)
2079                                 err(1, "qassign_item: calloc");
2080                         if (strlcpy($$->queue, $1, sizeof($$->queue)) >=
2081                             sizeof($$->queue)) {
2082                                 yyerror("queue name '%s' too long (max "
2083                                     "%d chars)", $1, sizeof($$->queue)-1);
2084                                 free($1);
2085                                 free($$);
2086                                 YYERROR;
2087                         }
2088                         free($1);
2089                         $$->next = NULL;
2090                         $$->tail = $$;
2091                 }
2092                 ;
2093
2094 pfrule          : action dir logquick interface route af proto fromto
2095                     filter_opts
2096                 {
2097                         struct pfctl_rule        r;
2098                         struct node_state_opt   *o;
2099                         struct node_proto       *proto;
2100                         int                      srctrack = 0;
2101                         int                      statelock = 0;
2102                         int                      adaptive = 0;
2103                         int                      defaults = 0;
2104
2105                         if (check_rulestate(PFCTL_STATE_FILTER))
2106                                 YYERROR;
2107
2108                         memset(&r, 0, sizeof(r));
2109
2110                         r.action = $1.b1;
2111                         switch ($1.b2) {
2112                         case PFRULE_RETURNRST:
2113                                 r.rule_flag |= PFRULE_RETURNRST;
2114                                 r.return_ttl = $1.w;
2115                                 break;
2116                         case PFRULE_RETURNICMP:
2117                                 r.rule_flag |= PFRULE_RETURNICMP;
2118                                 r.return_icmp = $1.w;
2119                                 r.return_icmp6 = $1.w2;
2120                                 break;
2121                         case PFRULE_RETURN:
2122                                 r.rule_flag |= PFRULE_RETURN;
2123                                 r.return_icmp = $1.w;
2124                                 r.return_icmp6 = $1.w2;
2125                                 break;
2126                         }
2127                         r.direction = $2;
2128                         r.log = $3.log;
2129                         r.logif = $3.logif;
2130                         r.quick = $3.quick;
2131                         r.prob = $9.prob;
2132                         r.rtableid = $9.rtableid;
2133
2134                         if ($9.marker & FOM_PRIO) {
2135                                 if ($9.prio == 0)
2136                                         r.prio = PF_PRIO_ZERO;
2137                                 else
2138                                         r.prio = $9.prio;
2139                         }
2140                         if ($9.marker & FOM_SETPRIO) {
2141                                 r.set_prio[0] = $9.set_prio[0];
2142                                 r.set_prio[1] = $9.set_prio[1];
2143                                 r.scrub_flags |= PFSTATE_SETPRIO;
2144                         }
2145
2146                         r.af = $6;
2147                         if ($9.tag)
2148                                 if (strlcpy(r.tagname, $9.tag,
2149                                     PF_TAG_NAME_SIZE) >= PF_TAG_NAME_SIZE) {
2150                                         yyerror("tag too long, max %u chars",
2151                                             PF_TAG_NAME_SIZE - 1);
2152                                         YYERROR;
2153                                 }
2154                         if ($9.match_tag)
2155                                 if (strlcpy(r.match_tagname, $9.match_tag,
2156                                     PF_TAG_NAME_SIZE) >= PF_TAG_NAME_SIZE) {
2157                                         yyerror("tag too long, max %u chars",
2158                                             PF_TAG_NAME_SIZE - 1);
2159                                         YYERROR;
2160                                 }
2161                         r.match_tag_not = $9.match_tag_not;
2162                         if (rule_label(&r, $9.label))
2163                                 YYERROR;
2164                         for (int i = 0; i < PF_RULE_MAX_LABEL_COUNT; i++)
2165                                 free($9.label[i]);
2166                         r.ridentifier = $9.ridentifier;
2167                         r.flags = $9.flags.b1;
2168                         r.flagset = $9.flags.b2;
2169                         if (($9.flags.b1 & $9.flags.b2) != $9.flags.b1) {
2170                                 yyerror("flags always false");
2171                                 YYERROR;
2172                         }
2173                         if ($9.flags.b1 || $9.flags.b2 || $8.src_os) {
2174                                 for (proto = $7; proto != NULL &&
2175                                     proto->proto != IPPROTO_TCP;
2176                                     proto = proto->next)
2177                                         ;       /* nothing */
2178                                 if (proto == NULL && $7 != NULL) {
2179                                         if ($9.flags.b1 || $9.flags.b2)
2180                                                 yyerror(
2181                                                     "flags only apply to tcp");
2182                                         if ($8.src_os)
2183                                                 yyerror(
2184                                                     "OS fingerprinting only "
2185                                                     "apply to tcp");
2186                                         YYERROR;
2187                                 }
2188 #if 0
2189                                 if (($9.flags.b1 & parse_flags("S")) == 0 &&
2190                                     $8.src_os) {
2191                                         yyerror("OS fingerprinting requires "
2192                                             "the SYN TCP flag (flags S/SA)");
2193                                         YYERROR;
2194                                 }
2195 #endif
2196                         }
2197
2198                         r.tos = $9.tos;
2199                         r.keep_state = $9.keep.action;
2200                         o = $9.keep.options;
2201
2202                         /* 'keep state' by default on pass rules. */
2203                         if (!r.keep_state && !r.action &&
2204                             !($9.marker & FOM_KEEP)) {
2205                                 r.keep_state = PF_STATE_NORMAL;
2206                                 o = keep_state_defaults;
2207                                 defaults = 1;
2208                         }
2209
2210                         while (o) {
2211                                 struct node_state_opt   *p = o;
2212
2213                                 switch (o->type) {
2214                                 case PF_STATE_OPT_MAX:
2215                                         if (r.max_states) {
2216                                                 yyerror("state option 'max' "
2217                                                     "multiple definitions");
2218                                                 YYERROR;
2219                                         }
2220                                         r.max_states = o->data.max_states;
2221                                         break;
2222                                 case PF_STATE_OPT_NOSYNC:
2223                                         if (r.rule_flag & PFRULE_NOSYNC) {
2224                                                 yyerror("state option 'sync' "
2225                                                     "multiple definitions");
2226                                                 YYERROR;
2227                                         }
2228                                         r.rule_flag |= PFRULE_NOSYNC;
2229                                         break;
2230                                 case PF_STATE_OPT_SRCTRACK:
2231                                         if (srctrack) {
2232                                                 yyerror("state option "
2233                                                     "'source-track' "
2234                                                     "multiple definitions");
2235                                                 YYERROR;
2236                                         }
2237                                         srctrack =  o->data.src_track;
2238                                         r.rule_flag |= PFRULE_SRCTRACK;
2239                                         break;
2240                                 case PF_STATE_OPT_MAX_SRC_STATES:
2241                                         if (r.max_src_states) {
2242                                                 yyerror("state option "
2243                                                     "'max-src-states' "
2244                                                     "multiple definitions");
2245                                                 YYERROR;
2246                                         }
2247                                         if (o->data.max_src_states == 0) {
2248                                                 yyerror("'max-src-states' must "
2249                                                     "be > 0");
2250                                                 YYERROR;
2251                                         }
2252                                         r.max_src_states =
2253                                             o->data.max_src_states;
2254                                         r.rule_flag |= PFRULE_SRCTRACK;
2255                                         break;
2256                                 case PF_STATE_OPT_OVERLOAD:
2257                                         if (r.overload_tblname[0]) {
2258                                                 yyerror("multiple 'overload' "
2259                                                     "table definitions");
2260                                                 YYERROR;
2261                                         }
2262                                         if (strlcpy(r.overload_tblname,
2263                                             o->data.overload.tblname,
2264                                             PF_TABLE_NAME_SIZE) >=
2265                                             PF_TABLE_NAME_SIZE) {
2266                                                 yyerror("state option: "
2267                                                     "strlcpy");
2268                                                 YYERROR;
2269                                         }
2270                                         r.flush = o->data.overload.flush;
2271                                         break;
2272                                 case PF_STATE_OPT_MAX_SRC_CONN:
2273                                         if (r.max_src_conn) {
2274                                                 yyerror("state option "
2275                                                     "'max-src-conn' "
2276                                                     "multiple definitions");
2277                                                 YYERROR;
2278                                         }
2279                                         if (o->data.max_src_conn == 0) {
2280                                                 yyerror("'max-src-conn' "
2281                                                     "must be > 0");
2282                                                 YYERROR;
2283                                         }
2284                                         r.max_src_conn =
2285                                             o->data.max_src_conn;
2286                                         r.rule_flag |= PFRULE_SRCTRACK |
2287                                             PFRULE_RULESRCTRACK;
2288                                         break;
2289                                 case PF_STATE_OPT_MAX_SRC_CONN_RATE:
2290                                         if (r.max_src_conn_rate.limit) {
2291                                                 yyerror("state option "
2292                                                     "'max-src-conn-rate' "
2293                                                     "multiple definitions");
2294                                                 YYERROR;
2295                                         }
2296                                         if (!o->data.max_src_conn_rate.limit ||
2297                                             !o->data.max_src_conn_rate.seconds) {
2298                                                 yyerror("'max-src-conn-rate' "
2299                                                     "values must be > 0");
2300                                                 YYERROR;
2301                                         }
2302                                         if (o->data.max_src_conn_rate.limit >
2303                                             PF_THRESHOLD_MAX) {
2304                                                 yyerror("'max-src-conn-rate' "
2305                                                     "maximum rate must be < %u",
2306                                                     PF_THRESHOLD_MAX);
2307                                                 YYERROR;
2308                                         }
2309                                         r.max_src_conn_rate.limit =
2310                                             o->data.max_src_conn_rate.limit;
2311                                         r.max_src_conn_rate.seconds =
2312                                             o->data.max_src_conn_rate.seconds;
2313                                         r.rule_flag |= PFRULE_SRCTRACK |
2314                                             PFRULE_RULESRCTRACK;
2315                                         break;
2316                                 case PF_STATE_OPT_MAX_SRC_NODES:
2317                                         if (r.max_src_nodes) {
2318                                                 yyerror("state option "
2319                                                     "'max-src-nodes' "
2320                                                     "multiple definitions");
2321                                                 YYERROR;
2322                                         }
2323                                         if (o->data.max_src_nodes == 0) {
2324                                                 yyerror("'max-src-nodes' must "
2325                                                     "be > 0");
2326                                                 YYERROR;
2327                                         }
2328                                         r.max_src_nodes =
2329                                             o->data.max_src_nodes;
2330                                         r.rule_flag |= PFRULE_SRCTRACK |
2331                                             PFRULE_RULESRCTRACK;
2332                                         break;
2333                                 case PF_STATE_OPT_STATELOCK:
2334                                         if (statelock) {
2335                                                 yyerror("state locking option: "
2336                                                     "multiple definitions");
2337                                                 YYERROR;
2338                                         }
2339                                         statelock = 1;
2340                                         r.rule_flag |= o->data.statelock;
2341                                         break;
2342                                 case PF_STATE_OPT_SLOPPY:
2343                                         if (r.rule_flag & PFRULE_STATESLOPPY) {
2344                                                 yyerror("state sloppy option: "
2345                                                     "multiple definitions");
2346                                                 YYERROR;
2347                                         }
2348                                         r.rule_flag |= PFRULE_STATESLOPPY;
2349                                         break;
2350                                 case PF_STATE_OPT_TIMEOUT:
2351                                         if (o->data.timeout.number ==
2352                                             PFTM_ADAPTIVE_START ||
2353                                             o->data.timeout.number ==
2354                                             PFTM_ADAPTIVE_END)
2355                                                 adaptive = 1;
2356                                         if (r.timeout[o->data.timeout.number]) {
2357                                                 yyerror("state timeout %s "
2358                                                     "multiple definitions",
2359                                                     pf_timeouts[o->data.
2360                                                     timeout.number].name);
2361                                                 YYERROR;
2362                                         }
2363                                         r.timeout[o->data.timeout.number] =
2364                                             o->data.timeout.seconds;
2365                                 }
2366                                 o = o->next;
2367                                 if (!defaults)
2368                                         free(p);
2369                         }
2370
2371                         /* 'flags S/SA' by default on stateful rules */
2372                         if (!r.action && !r.flags && !r.flagset &&
2373                             !$9.fragment && !($9.marker & FOM_FLAGS) &&
2374                             r.keep_state) {
2375                                 r.flags = parse_flags("S");
2376                                 r.flagset =  parse_flags("SA");
2377                         }
2378                         if (!adaptive && r.max_states) {
2379                                 r.timeout[PFTM_ADAPTIVE_START] =
2380                                     (r.max_states / 10) * 6;
2381                                 r.timeout[PFTM_ADAPTIVE_END] =
2382                                     (r.max_states / 10) * 12;
2383                         }
2384                         if (r.rule_flag & PFRULE_SRCTRACK) {
2385                                 if (srctrack == PF_SRCTRACK_GLOBAL &&
2386                                     r.max_src_nodes) {
2387                                         yyerror("'max-src-nodes' is "
2388                                             "incompatible with "
2389                                             "'source-track global'");
2390                                         YYERROR;
2391                                 }
2392                                 if (srctrack == PF_SRCTRACK_GLOBAL &&
2393                                     r.max_src_conn) {
2394                                         yyerror("'max-src-conn' is "
2395                                             "incompatible with "
2396                                             "'source-track global'");
2397                                         YYERROR;
2398                                 }
2399                                 if (srctrack == PF_SRCTRACK_GLOBAL &&
2400                                     r.max_src_conn_rate.seconds) {
2401                                         yyerror("'max-src-conn-rate' is "
2402                                             "incompatible with "
2403                                             "'source-track global'");
2404                                         YYERROR;
2405                                 }
2406                                 if (r.timeout[PFTM_SRC_NODE] <
2407                                     r.max_src_conn_rate.seconds)
2408                                         r.timeout[PFTM_SRC_NODE] =
2409                                             r.max_src_conn_rate.seconds;
2410                                 r.rule_flag |= PFRULE_SRCTRACK;
2411                                 if (srctrack == PF_SRCTRACK_RULE)
2412                                         r.rule_flag |= PFRULE_RULESRCTRACK;
2413                         }
2414                         if (r.keep_state && !statelock)
2415                                 r.rule_flag |= default_statelock;
2416
2417                         if ($9.fragment)
2418                                 r.rule_flag |= PFRULE_FRAGMENT;
2419                         r.allow_opts = $9.allowopts;
2420
2421                         decide_address_family($8.src.host, &r.af);
2422                         decide_address_family($8.dst.host, &r.af);
2423
2424                         if ($5.rt) {
2425                                 if (!r.direction) {
2426                                         yyerror("direction must be explicit "
2427                                             "with rules that specify routing");
2428                                         YYERROR;
2429                                 }
2430                                 r.rt = $5.rt;
2431                                 r.rpool.opts = $5.pool_opts;
2432                                 if ($5.key != NULL)
2433                                         memcpy(&r.rpool.key, $5.key,
2434                                             sizeof(struct pf_poolhashkey));
2435                         }
2436                         if (r.rt) {
2437                                 decide_address_family($5.host, &r.af);
2438                                 remove_invalid_hosts(&$5.host, &r.af);
2439                                 if ($5.host == NULL) {
2440                                         yyerror("no routing address with "
2441                                             "matching address family found.");
2442                                         YYERROR;
2443                                 }
2444                                 if ((r.rpool.opts & PF_POOL_TYPEMASK) ==
2445                                     PF_POOL_NONE && ($5.host->next != NULL ||
2446                                     $5.host->addr.type == PF_ADDR_TABLE ||
2447                                     DYNIF_MULTIADDR($5.host->addr)))
2448                                         r.rpool.opts |= PF_POOL_ROUNDROBIN;
2449                                 if ((r.rpool.opts & PF_POOL_TYPEMASK) !=
2450                                     PF_POOL_ROUNDROBIN &&
2451                                     disallow_table($5.host, "tables are only "
2452                                     "supported in round-robin routing pools"))
2453                                         YYERROR;
2454                                 if ((r.rpool.opts & PF_POOL_TYPEMASK) !=
2455                                     PF_POOL_ROUNDROBIN &&
2456                                     disallow_alias($5.host, "interface (%s) "
2457                                     "is only supported in round-robin "
2458                                     "routing pools"))
2459                                         YYERROR;
2460                                 if ($5.host->next != NULL) {
2461                                         if ((r.rpool.opts & PF_POOL_TYPEMASK) !=
2462                                             PF_POOL_ROUNDROBIN) {
2463                                                 yyerror("r.rpool.opts must "
2464                                                     "be PF_POOL_ROUNDROBIN");
2465                                                 YYERROR;
2466                                         }
2467                                 }
2468                         }
2469                         if ($9.queues.qname != NULL) {
2470                                 if (strlcpy(r.qname, $9.queues.qname,
2471                                     sizeof(r.qname)) >= sizeof(r.qname)) {
2472                                         yyerror("rule qname too long (max "
2473                                             "%d chars)", sizeof(r.qname)-1);
2474                                         YYERROR;
2475                                 }
2476                                 free($9.queues.qname);
2477                         }
2478                         if ($9.queues.pqname != NULL) {
2479                                 if (strlcpy(r.pqname, $9.queues.pqname,
2480                                     sizeof(r.pqname)) >= sizeof(r.pqname)) {
2481                                         yyerror("rule pqname too long (max "
2482                                             "%d chars)", sizeof(r.pqname)-1);
2483                                         YYERROR;
2484                                 }
2485                                 free($9.queues.pqname);
2486                         }
2487 #ifdef __FreeBSD__
2488                         r.divert.port = $9.divert.port;
2489 #else
2490                         if ((r.divert.port = $9.divert.port)) {
2491                                 if (r.direction == PF_OUT) {
2492                                         if ($9.divert.addr) {
2493                                                 yyerror("address specified "
2494                                                     "for outgoing divert");
2495                                                 YYERROR;
2496                                         }
2497                                         bzero(&r.divert.addr,
2498                                             sizeof(r.divert.addr));
2499                                 } else {
2500                                         if (!$9.divert.addr) {
2501                                                 yyerror("no address specified "
2502                                                     "for incoming divert");
2503                                                 YYERROR;
2504                                         }
2505                                         if ($9.divert.addr->af != r.af) {
2506                                                 yyerror("address family "
2507                                                     "mismatch for divert");
2508                                                 YYERROR;
2509                                         }
2510                                         r.divert.addr =
2511                                             $9.divert.addr->addr.v.a.addr;
2512                                 }
2513                         }
2514 #endif
2515
2516                         if ($9.dnpipe || $9.dnrpipe) {
2517                                 r.dnpipe = $9.dnpipe;
2518                                 r.dnrpipe = $9.dnrpipe;
2519                                 if ($9.free_flags & PFRULE_DN_IS_PIPE)
2520                                         r.free_flags |= PFRULE_DN_IS_PIPE;
2521                                 else
2522                                         r.free_flags |= PFRULE_DN_IS_QUEUE;
2523                         }
2524
2525                         expand_rule(&r, $4, $5.host, $7, $8.src_os,
2526                             $8.src.host, $8.src.port, $8.dst.host, $8.dst.port,
2527                             $9.uid, $9.gid, $9.icmpspec, "");
2528                 }
2529                 ;
2530
2531 filter_opts     :       {
2532                                 bzero(&filter_opts, sizeof filter_opts);
2533                                 filter_opts.rtableid = -1;
2534                         }
2535                     filter_opts_l
2536                         { $$ = filter_opts; }
2537                 | /* empty */   {
2538                         bzero(&filter_opts, sizeof filter_opts);
2539                         filter_opts.rtableid = -1;
2540                         $$ = filter_opts;
2541                 }
2542                 ;
2543
2544 filter_opts_l   : filter_opts_l filter_opt
2545                 | filter_opt
2546                 ;
2547
2548 filter_opt      : USER uids {
2549                         if (filter_opts.uid)
2550                                 $2->tail->next = filter_opts.uid;
2551                         filter_opts.uid = $2;
2552                 }
2553                 | GROUP gids {
2554                         if (filter_opts.gid)
2555                                 $2->tail->next = filter_opts.gid;
2556                         filter_opts.gid = $2;
2557                 }
2558                 | flags {
2559                         if (filter_opts.marker & FOM_FLAGS) {
2560                                 yyerror("flags cannot be redefined");
2561                                 YYERROR;
2562                         }
2563                         filter_opts.marker |= FOM_FLAGS;
2564                         filter_opts.flags.b1 |= $1.b1;
2565                         filter_opts.flags.b2 |= $1.b2;
2566                         filter_opts.flags.w |= $1.w;
2567                         filter_opts.flags.w2 |= $1.w2;
2568                 }
2569                 | icmpspec {
2570                         if (filter_opts.marker & FOM_ICMP) {
2571                                 yyerror("icmp-type cannot be redefined");
2572                                 YYERROR;
2573                         }
2574                         filter_opts.marker |= FOM_ICMP;
2575                         filter_opts.icmpspec = $1;
2576                 }
2577                 | PRIO NUMBER {
2578                         if (filter_opts.marker & FOM_PRIO) {
2579                                 yyerror("prio cannot be redefined");
2580                                 YYERROR;
2581                         }
2582                         if ($2 < 0 || $2 > PF_PRIO_MAX) {
2583                                 yyerror("prio must be 0 - %u", PF_PRIO_MAX);
2584                                 YYERROR;
2585                         }
2586                         filter_opts.marker |= FOM_PRIO;
2587                         filter_opts.prio = $2;
2588                 }
2589                 | TOS tos {
2590                         if (filter_opts.marker & FOM_TOS) {
2591                                 yyerror("tos cannot be redefined");
2592                                 YYERROR;
2593                         }
2594                         filter_opts.marker |= FOM_TOS;
2595                         filter_opts.tos = $2;
2596                 }
2597                 | keep {
2598                         if (filter_opts.marker & FOM_KEEP) {
2599                                 yyerror("modulate or keep cannot be redefined");
2600                                 YYERROR;
2601                         }
2602                         filter_opts.marker |= FOM_KEEP;
2603                         filter_opts.keep.action = $1.action;
2604                         filter_opts.keep.options = $1.options;
2605                 }
2606                 | RIDENTIFIER number {
2607                         filter_opts.ridentifier = $2;
2608                 }
2609                 | FRAGMENT {
2610                         filter_opts.fragment = 1;
2611                 }
2612                 | ALLOWOPTS {
2613                         filter_opts.allowopts = 1;
2614                 }
2615                 | label {
2616                         if (filter_opts.labelcount >= PF_RULE_MAX_LABEL_COUNT) {
2617                                 yyerror("label can only be used %d times", PF_RULE_MAX_LABEL_COUNT);
2618                                 YYERROR;
2619                         }
2620                         filter_opts.label[filter_opts.labelcount++] = $1;
2621                 }
2622                 | qname {
2623                         if (filter_opts.queues.qname) {
2624                                 yyerror("queue cannot be redefined");
2625                                 YYERROR;
2626                         }
2627                         filter_opts.queues = $1;
2628                 }
2629                 | DNPIPE number {
2630                         filter_opts.dnpipe = $2;
2631                         filter_opts.free_flags |= PFRULE_DN_IS_PIPE;
2632                 }
2633                 | DNPIPE '(' number ')' {
2634                         filter_opts.dnpipe = $3;
2635                         filter_opts.free_flags |= PFRULE_DN_IS_PIPE;
2636                 }
2637                 | DNPIPE '(' number comma number ')' {
2638                         filter_opts.dnrpipe = $5;
2639                         filter_opts.dnpipe = $3;
2640                         filter_opts.free_flags |= PFRULE_DN_IS_PIPE;
2641                 }
2642                 | DNQUEUE number {
2643                         filter_opts.dnpipe = $2;
2644                         filter_opts.free_flags |= PFRULE_DN_IS_QUEUE;
2645                 }
2646                 | DNQUEUE '(' number comma number ')' {
2647                         filter_opts.dnrpipe = $5;
2648                         filter_opts.dnpipe = $3;
2649                         filter_opts.free_flags |= PFRULE_DN_IS_QUEUE;
2650                 }
2651                 | DNQUEUE '(' number ')' {
2652                         filter_opts.dnpipe = $3;
2653                         filter_opts.free_flags |= PFRULE_DN_IS_QUEUE;
2654                 }
2655                 | TAG string                            {
2656                         filter_opts.tag = $2;
2657                 }
2658                 | not TAGGED string                     {
2659                         filter_opts.match_tag = $3;
2660                         filter_opts.match_tag_not = $1;
2661                 }
2662                 | PROBABILITY probability               {
2663                         double  p;
2664
2665                         p = floor($2 * UINT_MAX + 0.5);
2666                         if (p < 0.0 || p > UINT_MAX) {
2667                                 yyerror("invalid probability: %lf", p);
2668                                 YYERROR;
2669                         }
2670                         filter_opts.prob = (u_int32_t)p;
2671                         if (filter_opts.prob == 0)
2672                                 filter_opts.prob = 1;
2673                 }
2674                 | RTABLE NUMBER                         {
2675                         if ($2 < 0 || $2 > rt_tableid_max()) {
2676                                 yyerror("invalid rtable id");
2677                                 YYERROR;
2678                         }
2679                         filter_opts.rtableid = $2;
2680                 }
2681                 | DIVERTTO portplain {
2682 #ifdef __FreeBSD__
2683                         filter_opts.divert.port = $2.a;
2684                         if (!filter_opts.divert.port) {
2685                                 yyerror("invalid divert port: %u", ntohs($2.a));
2686                                 YYERROR;
2687                         }
2688 #endif
2689                 }
2690                 | DIVERTTO STRING PORT portplain {
2691 #ifndef __FreeBSD__
2692                         if ((filter_opts.divert.addr = host($2)) == NULL) {
2693                                 yyerror("could not parse divert address: %s",
2694                                     $2);
2695                                 free($2);
2696                                 YYERROR;
2697                         }
2698 #else
2699                         if ($2)
2700 #endif
2701                         free($2);
2702                         filter_opts.divert.port = $4.a;
2703                         if (!filter_opts.divert.port) {
2704                                 yyerror("invalid divert port: %u", ntohs($4.a));
2705                                 YYERROR;
2706                         }
2707                 }
2708                 | DIVERTREPLY {
2709 #ifdef __FreeBSD__
2710                         yyerror("divert-reply has no meaning in FreeBSD pf(4)");
2711                         YYERROR;
2712 #else
2713                         filter_opts.divert.port = 1;    /* some random value */
2714 #endif
2715                 }
2716                 | filter_sets
2717                 ;
2718
2719 filter_sets     : SET '(' filter_sets_l ')'     { $$ = filter_opts; }
2720                 | SET filter_set                { $$ = filter_opts; }
2721                 ;
2722
2723 filter_sets_l   : filter_sets_l comma filter_set
2724                 | filter_set
2725                 ;
2726
2727 filter_set      : prio {
2728                         if (filter_opts.marker & FOM_SETPRIO) {
2729                                 yyerror("prio cannot be redefined");
2730                                 YYERROR;
2731                         }
2732                         filter_opts.marker |= FOM_SETPRIO;
2733                         filter_opts.set_prio[0] = $1.b1;
2734                         filter_opts.set_prio[1] = $1.b2;
2735                 }
2736 prio            : PRIO NUMBER {
2737                         if ($2 < 0 || $2 > PF_PRIO_MAX) {
2738                                 yyerror("prio must be 0 - %u", PF_PRIO_MAX);
2739                                 YYERROR;
2740                         }
2741                         $$.b1 = $$.b2 = $2;
2742                 }
2743                 | PRIO '(' NUMBER comma NUMBER ')' {
2744                         if ($3 < 0 || $3 > PF_PRIO_MAX ||
2745                             $5 < 0 || $5 > PF_PRIO_MAX) {
2746                                 yyerror("prio must be 0 - %u", PF_PRIO_MAX);
2747                                 YYERROR;
2748                         }
2749                         $$.b1 = $3;
2750                         $$.b2 = $5;
2751                 }
2752                 ;
2753
2754 probability     : STRING                                {
2755                         char    *e;
2756                         double   p = strtod($1, &e);
2757
2758                         if (*e == '%') {
2759                                 p *= 0.01;
2760                                 e++;
2761                         }
2762                         if (*e) {
2763                                 yyerror("invalid probability: %s", $1);
2764                                 free($1);
2765                                 YYERROR;
2766                         }
2767                         free($1);
2768                         $$ = p;
2769                 }
2770                 | NUMBER                                {
2771                         $$ = (double)$1;
2772                 }
2773                 ;
2774
2775
2776 action          : PASS                  {
2777                         $$.b1 = PF_PASS;
2778                         $$.b2 = failpolicy;
2779                         $$.w = returnicmpdefault;
2780                         $$.w2 = returnicmp6default;
2781                 }
2782                 | MATCH                 { $$.b1 = PF_MATCH; $$.b2 = $$.w = 0; }
2783                 | BLOCK blockspec       { $$ = $2; $$.b1 = PF_DROP; }
2784                 ;
2785
2786 blockspec       : /* empty */           {
2787                         $$.b2 = blockpolicy;
2788                         $$.w = returnicmpdefault;
2789                         $$.w2 = returnicmp6default;
2790                 }
2791                 | DROP                  {
2792                         $$.b2 = PFRULE_DROP;
2793                         $$.w = 0;
2794                         $$.w2 = 0;
2795                 }
2796                 | RETURNRST             {
2797                         $$.b2 = PFRULE_RETURNRST;
2798                         $$.w = 0;
2799                         $$.w2 = 0;
2800                 }
2801                 | RETURNRST '(' TTL NUMBER ')'  {
2802                         if ($4 < 0 || $4 > 255) {
2803                                 yyerror("illegal ttl value %d", $4);
2804                                 YYERROR;
2805                         }
2806                         $$.b2 = PFRULE_RETURNRST;
2807                         $$.w = $4;
2808                         $$.w2 = 0;
2809                 }
2810                 | RETURNICMP            {
2811                         $$.b2 = PFRULE_RETURNICMP;
2812                         $$.w = returnicmpdefault;
2813                         $$.w2 = returnicmp6default;
2814                 }
2815                 | RETURNICMP6           {
2816                         $$.b2 = PFRULE_RETURNICMP;
2817                         $$.w = returnicmpdefault;
2818                         $$.w2 = returnicmp6default;
2819                 }
2820                 | RETURNICMP '(' reticmpspec ')'        {
2821                         $$.b2 = PFRULE_RETURNICMP;
2822                         $$.w = $3;
2823                         $$.w2 = returnicmpdefault;
2824                 }
2825                 | RETURNICMP6 '(' reticmp6spec ')'      {
2826                         $$.b2 = PFRULE_RETURNICMP;
2827                         $$.w = returnicmpdefault;
2828                         $$.w2 = $3;
2829                 }
2830                 | RETURNICMP '(' reticmpspec comma reticmp6spec ')' {
2831                         $$.b2 = PFRULE_RETURNICMP;
2832                         $$.w = $3;
2833                         $$.w2 = $5;
2834                 }
2835                 | RETURN {
2836                         $$.b2 = PFRULE_RETURN;
2837                         $$.w = returnicmpdefault;
2838                         $$.w2 = returnicmp6default;
2839                 }
2840                 ;
2841
2842 reticmpspec     : STRING                        {
2843                         if (!($$ = parseicmpspec($1, AF_INET))) {
2844                                 free($1);
2845                                 YYERROR;
2846                         }
2847                         free($1);
2848                 }
2849                 | NUMBER                        {
2850                         u_int8_t                icmptype;
2851
2852                         if ($1 < 0 || $1 > 255) {
2853                                 yyerror("invalid icmp code %lu", $1);
2854                                 YYERROR;
2855                         }
2856                         icmptype = returnicmpdefault >> 8;
2857                         $$ = (icmptype << 8 | $1);
2858                 }
2859                 ;
2860
2861 reticmp6spec    : STRING                        {
2862                         if (!($$ = parseicmpspec($1, AF_INET6))) {
2863                                 free($1);
2864                                 YYERROR;
2865                         }
2866                         free($1);
2867                 }
2868                 | NUMBER                        {
2869                         u_int8_t                icmptype;
2870
2871                         if ($1 < 0 || $1 > 255) {
2872                                 yyerror("invalid icmp code %lu", $1);
2873                                 YYERROR;
2874                         }
2875                         icmptype = returnicmp6default >> 8;
2876                         $$ = (icmptype << 8 | $1);
2877                 }
2878                 ;
2879
2880 dir             : /* empty */                   { $$ = PF_INOUT; }
2881                 | IN                            { $$ = PF_IN; }
2882                 | OUT                           { $$ = PF_OUT; }
2883                 ;
2884
2885 quick           : /* empty */                   { $$.quick = 0; }
2886                 | QUICK                         { $$.quick = 1; }
2887                 ;
2888
2889 logquick        : /* empty */   { $$.log = 0; $$.quick = 0; $$.logif = 0; }
2890                 | log           { $$ = $1; $$.quick = 0; }
2891                 | QUICK         { $$.quick = 1; $$.log = 0; $$.logif = 0; }
2892                 | log QUICK     { $$ = $1; $$.quick = 1; }
2893                 | QUICK log     { $$ = $2; $$.quick = 1; }
2894                 ;
2895
2896 log             : LOG                   { $$.log = PF_LOG; $$.logif = 0; }
2897                 | LOG '(' logopts ')'   {
2898                         $$.log = PF_LOG | $3.log;
2899                         $$.logif = $3.logif;
2900                 }
2901                 ;
2902
2903 logopts         : logopt                        { $$ = $1; }
2904                 | logopts comma logopt          {
2905                         $$.log = $1.log | $3.log;
2906                         $$.logif = $3.logif;
2907                         if ($$.logif == 0)
2908                                 $$.logif = $1.logif;
2909                 }
2910                 ;
2911
2912 logopt          : ALL           { $$.log = PF_LOG_ALL; $$.logif = 0; }
2913                 | USER          { $$.log = PF_LOG_SOCKET_LOOKUP; $$.logif = 0; }
2914                 | GROUP         { $$.log = PF_LOG_SOCKET_LOOKUP; $$.logif = 0; }
2915                 | TO string     {
2916                         const char      *errstr;
2917                         u_int            i;
2918
2919                         $$.log = 0;
2920                         if (strncmp($2, "pflog", 5)) {
2921                                 yyerror("%s: should be a pflog interface", $2);
2922                                 free($2);
2923                                 YYERROR;
2924                         }
2925                         i = strtonum($2 + 5, 0, 255, &errstr);
2926                         if (errstr) {
2927                                 yyerror("%s: %s", $2, errstr);
2928                                 free($2);
2929                                 YYERROR;
2930                         }
2931                         free($2);
2932                         $$.logif = i;
2933                 }
2934                 ;
2935
2936 interface       : /* empty */                   { $$ = NULL; }
2937                 | ON if_item_not                { $$ = $2; }
2938                 | ON '{' optnl if_list '}'      { $$ = $4; }
2939                 ;
2940
2941 if_list         : if_item_not optnl             { $$ = $1; }
2942                 | if_list comma if_item_not optnl       {
2943                         $1->tail->next = $3;
2944                         $1->tail = $3;
2945                         $$ = $1;
2946                 }
2947                 ;
2948
2949 if_item_not     : not if_item                   { $$ = $2; $$->not = $1; }
2950                 ;
2951
2952 if_item         : STRING                        {
2953                         struct node_host        *n;
2954
2955                         $$ = calloc(1, sizeof(struct node_if));
2956                         if ($$ == NULL)
2957                                 err(1, "if_item: calloc");
2958                         if (strlcpy($$->ifname, $1, sizeof($$->ifname)) >=
2959                             sizeof($$->ifname)) {
2960                                 free($1);
2961                                 free($$);
2962                                 yyerror("interface name too long");
2963                                 YYERROR;
2964                         }
2965
2966                         if ((n = ifa_exists($1)) != NULL)
2967                                 $$->ifa_flags = n->ifa_flags;
2968
2969                         free($1);
2970                         $$->not = 0;
2971                         $$->next = NULL;
2972                         $$->tail = $$;
2973                 }
2974                 ;
2975
2976 af              : /* empty */                   { $$ = 0; }
2977                 | INET                          { $$ = AF_INET; }
2978                 | INET6                         { $$ = AF_INET6; }
2979                 ;
2980
2981 proto           : /* empty */                           { $$ = NULL; }
2982                 | PROTO proto_item                      { $$ = $2; }
2983                 | PROTO '{' optnl proto_list '}'        { $$ = $4; }
2984                 ;
2985
2986 proto_list      : proto_item optnl              { $$ = $1; }
2987                 | proto_list comma proto_item optnl     {
2988                         $1->tail->next = $3;
2989                         $1->tail = $3;
2990                         $$ = $1;
2991                 }
2992                 ;
2993
2994 proto_item      : protoval                      {
2995                         u_int8_t        pr;
2996
2997                         pr = (u_int8_t)$1;
2998                         if (pr == 0) {
2999                                 yyerror("proto 0 cannot be used");
3000                                 YYERROR;
3001                         }
3002                         $$ = calloc(1, sizeof(struct node_proto));
3003                         if ($$ == NULL)
3004                                 err(1, "proto_item: calloc");
3005                         $$->proto = pr;
3006                         $$->next = NULL;
3007                         $$->tail = $$;
3008                 }
3009                 ;
3010
3011 protoval        : STRING                        {
3012                         struct protoent *p;
3013
3014                         p = getprotobyname($1);
3015                         if (p == NULL) {
3016                                 yyerror("unknown protocol %s", $1);
3017                                 free($1);
3018                                 YYERROR;
3019                         }
3020                         $$ = p->p_proto;
3021                         free($1);
3022                 }
3023                 | NUMBER                        {
3024                         if ($1 < 0 || $1 > 255) {
3025                                 yyerror("protocol outside range");
3026                                 YYERROR;
3027                         }
3028                 }
3029                 ;
3030
3031 fromto          : ALL                           {
3032                         $$.src.host = NULL;
3033                         $$.src.port = NULL;
3034                         $$.dst.host = NULL;
3035                         $$.dst.port = NULL;
3036                         $$.src_os = NULL;
3037                 }
3038                 | from os to                    {
3039                         $$.src = $1;
3040                         $$.src_os = $2;
3041                         $$.dst = $3;
3042                 }
3043                 ;
3044
3045 os              : /* empty */                   { $$ = NULL; }
3046                 | OS xos                        { $$ = $2; }
3047                 | OS '{' optnl os_list '}'      { $$ = $4; }
3048                 ;
3049
3050 xos             : STRING {
3051                         $$ = calloc(1, sizeof(struct node_os));
3052                         if ($$ == NULL)
3053                                 err(1, "os: calloc");
3054                         $$->os = $1;
3055                         $$->tail = $$;
3056                 }
3057                 ;
3058
3059 os_list         : xos optnl                     { $$ = $1; }
3060                 | os_list comma xos optnl       {
3061                         $1->tail->next = $3;
3062                         $1->tail = $3;
3063                         $$ = $1;
3064                 }
3065                 ;
3066
3067 from            : /* empty */                   {
3068                         $$.host = NULL;
3069                         $$.port = NULL;
3070                 }
3071                 | FROM ipportspec               {
3072                         $$ = $2;
3073                 }
3074                 ;
3075
3076 to              : /* empty */                   {
3077                         $$.host = NULL;
3078                         $$.port = NULL;
3079                 }
3080                 | TO ipportspec         {
3081                         if (disallow_urpf_failed($2.host, "\"urpf-failed\" is "
3082                             "not permitted in a destination address"))
3083                                 YYERROR;
3084                         $$ = $2;
3085                 }
3086                 ;
3087
3088 ipportspec      : ipspec                        {
3089                         $$.host = $1;
3090                         $$.port = NULL;
3091                 }
3092                 | ipspec PORT portspec          {
3093                         $$.host = $1;
3094                         $$.port = $3;
3095                 }
3096                 | PORT portspec                 {
3097                         $$.host = NULL;
3098                         $$.port = $2;
3099                 }
3100                 ;
3101
3102 optnl           : '\n' optnl
3103                 |
3104                 ;
3105
3106 ipspec          : ANY                           { $$ = NULL; }
3107                 | xhost                         { $$ = $1; }
3108                 | '{' optnl host_list '}'       { $$ = $3; }
3109                 ;
3110
3111 toipspec        : TO ipspec                     { $$ = $2; }
3112                 | /* empty */                   { $$ = NULL; }
3113                 ;
3114
3115 host_list       : ipspec optnl                  { $$ = $1; }
3116                 | host_list comma ipspec optnl  {
3117                         if ($3 == NULL)
3118                                 $$ = $1;
3119                         else if ($1 == NULL)
3120                                 $$ = $3;
3121                         else {
3122                                 $1->tail->next = $3;
3123                                 $1->tail = $3->tail;
3124                                 $$ = $1;
3125                         }
3126                 }
3127                 ;
3128
3129 xhost           : not host                      {
3130                         struct node_host        *n;
3131
3132                         for (n = $2; n != NULL; n = n->next)
3133                                 n->not = $1;
3134                         $$ = $2;
3135                 }
3136                 | not NOROUTE                   {
3137                         $$ = calloc(1, sizeof(struct node_host));
3138                         if ($$ == NULL)
3139                                 err(1, "xhost: calloc");
3140                         $$->addr.type = PF_ADDR_NOROUTE;
3141                         $$->next = NULL;
3142                         $$->not = $1;
3143                         $$->tail = $$;
3144                 }
3145                 | not URPFFAILED                {
3146                         $$ = calloc(1, sizeof(struct node_host));
3147                         if ($$ == NULL)
3148                                 err(1, "xhost: calloc");
3149                         $$->addr.type = PF_ADDR_URPFFAILED;
3150                         $$->next = NULL;
3151                         $$->not = $1;
3152                         $$->tail = $$;
3153                 }
3154                 ;
3155
3156 host            : STRING                        {
3157                         if (($$ = host($1)) == NULL)    {
3158                                 /* error. "any" is handled elsewhere */
3159                                 free($1);
3160                                 yyerror("could not parse host specification");
3161                                 YYERROR;
3162                         }
3163                         free($1);
3164
3165                 }
3166                 | STRING '-' STRING             {
3167                         struct node_host *b, *e;
3168
3169                         if ((b = host($1)) == NULL || (e = host($3)) == NULL) {
3170                                 free($1);
3171                                 free($3);
3172                                 yyerror("could not parse host specification");
3173                                 YYERROR;
3174                         }
3175                         if (b->af != e->af ||
3176                             b->addr.type != PF_ADDR_ADDRMASK ||
3177                             e->addr.type != PF_ADDR_ADDRMASK ||
3178                             unmask(&b->addr.v.a.mask, b->af) !=
3179                             (b->af == AF_INET ? 32 : 128) ||
3180                             unmask(&e->addr.v.a.mask, e->af) !=
3181                             (e->af == AF_INET ? 32 : 128) ||
3182                             b->next != NULL || b->not ||
3183                             e->next != NULL || e->not) {
3184                                 free(b);
3185                                 free(e);
3186                                 free($1);
3187                                 free($3);
3188                                 yyerror("invalid address range");
3189                                 YYERROR;
3190                         }
3191                         memcpy(&b->addr.v.a.mask, &e->addr.v.a.addr,
3192                             sizeof(b->addr.v.a.mask));
3193                         b->addr.type = PF_ADDR_RANGE;
3194                         $$ = b;
3195                         free(e);
3196                         free($1);
3197                         free($3);
3198                 }
3199                 | STRING '/' NUMBER             {
3200                         char    *buf;
3201
3202                         if (asprintf(&buf, "%s/%lld", $1, (long long)$3) == -1)
3203                                 err(1, "host: asprintf");
3204                         free($1);
3205                         if (($$ = host(buf)) == NULL)   {
3206                                 /* error. "any" is handled elsewhere */
3207                                 free(buf);
3208                                 yyerror("could not parse host specification");
3209                                 YYERROR;
3210                         }
3211                         free(buf);
3212                 }
3213                 | NUMBER '/' NUMBER             {
3214                         char    *buf;
3215
3216                         /* ie. for 10/8 parsing */
3217 #ifdef __FreeBSD__
3218                         if (asprintf(&buf, "%lld/%lld", (long long)$1, (long long)$3) == -1)
3219 #else
3220                         if (asprintf(&buf, "%lld/%lld", $1, $3) == -1)
3221 #endif
3222                                 err(1, "host: asprintf");
3223                         if (($$ = host(buf)) == NULL)   {
3224                                 /* error. "any" is handled elsewhere */
3225                                 free(buf);
3226                                 yyerror("could not parse host specification");
3227                                 YYERROR;
3228                         }
3229                         free(buf);
3230                 }
3231                 | dynaddr
3232                 | dynaddr '/' NUMBER            {
3233                         struct node_host        *n;
3234
3235                         if ($3 < 0 || $3 > 128) {
3236                                 yyerror("bit number too big");
3237                                 YYERROR;
3238                         }
3239                         $$ = $1;
3240                         for (n = $1; n != NULL; n = n->next)
3241                                 set_ipmask(n, $3);
3242                 }
3243                 | '<' STRING '>'        {
3244                         if (strlen($2) >= PF_TABLE_NAME_SIZE) {
3245                                 yyerror("table name '%s' too long", $2);
3246                                 free($2);
3247                                 YYERROR;
3248                         }
3249                         $$ = calloc(1, sizeof(struct node_host));
3250                         if ($$ == NULL)
3251                                 err(1, "host: calloc");
3252                         $$->addr.type = PF_ADDR_TABLE;
3253                         if (strlcpy($$->addr.v.tblname, $2,
3254                             sizeof($$->addr.v.tblname)) >=
3255                             sizeof($$->addr.v.tblname))
3256                                 errx(1, "host: strlcpy");
3257                         free($2);
3258                         $$->next = NULL;
3259                         $$->tail = $$;
3260                 }
3261                 ;
3262
3263 number          : NUMBER
3264                 | STRING                {
3265                         u_long  ulval;
3266
3267                         if (atoul($1, &ulval) == -1) {
3268                                 yyerror("%s is not a number", $1);
3269                                 free($1);
3270                                 YYERROR;
3271                         } else
3272                                 $$ = ulval;
3273                         free($1);
3274                 }
3275                 ;
3276
3277 dynaddr         : '(' STRING ')'                {
3278                         int      flags = 0;
3279                         char    *p, *op;
3280
3281                         op = $2;
3282                         if (!isalpha(op[0])) {
3283                                 yyerror("invalid interface name '%s'", op);
3284                                 free(op);
3285                                 YYERROR;
3286                         }
3287                         while ((p = strrchr($2, ':')) != NULL) {
3288                                 if (!strcmp(p+1, "network"))
3289                                         flags |= PFI_AFLAG_NETWORK;
3290                                 else if (!strcmp(p+1, "broadcast"))
3291                                         flags |= PFI_AFLAG_BROADCAST;
3292                                 else if (!strcmp(p+1, "peer"))
3293                                         flags |= PFI_AFLAG_PEER;
3294                                 else if (!strcmp(p+1, "0"))
3295                                         flags |= PFI_AFLAG_NOALIAS;
3296                                 else {
3297                                         yyerror("interface %s has bad modifier",
3298                                             $2);
3299                                         free(op);
3300                                         YYERROR;
3301                                 }
3302                                 *p = '\0';
3303                         }
3304                         if (flags & (flags - 1) & PFI_AFLAG_MODEMASK) {
3305                                 free(op);
3306                                 yyerror("illegal combination of "
3307                                     "interface modifiers");
3308                                 YYERROR;
3309                         }
3310                         $$ = calloc(1, sizeof(struct node_host));
3311                         if ($$ == NULL)
3312                                 err(1, "address: calloc");
3313                         $$->af = 0;
3314                         set_ipmask($$, 128);
3315                         $$->addr.type = PF_ADDR_DYNIFTL;
3316                         $$->addr.iflags = flags;
3317                         if (strlcpy($$->addr.v.ifname, $2,
3318                             sizeof($$->addr.v.ifname)) >=
3319                             sizeof($$->addr.v.ifname)) {
3320                                 free(op);
3321                                 free($$);
3322                                 yyerror("interface name too long");
3323                                 YYERROR;
3324                         }
3325                         free(op);
3326                         $$->next = NULL;
3327                         $$->tail = $$;
3328                 }
3329                 ;
3330
3331 portspec        : port_item                     { $$ = $1; }
3332                 | '{' optnl port_list '}'       { $$ = $3; }
3333                 ;
3334
3335 port_list       : port_item optnl               { $$ = $1; }
3336                 | port_list comma port_item optnl       {
3337                         $1->tail->next = $3;
3338                         $1->tail = $3;
3339                         $$ = $1;
3340                 }
3341                 ;
3342
3343 port_item       : portrange                     {
3344                         $$ = calloc(1, sizeof(struct node_port));
3345                         if ($$ == NULL)
3346                                 err(1, "port_item: calloc");
3347                         $$->port[0] = $1.a;
3348                         $$->port[1] = $1.b;
3349                         if ($1.t)
3350                                 $$->op = PF_OP_RRG;
3351                         else
3352                                 $$->op = PF_OP_EQ;
3353                         $$->next = NULL;
3354                         $$->tail = $$;
3355                 }
3356                 | unaryop portrange     {
3357                         if ($2.t) {
3358                                 yyerror("':' cannot be used with an other "
3359                                     "port operator");
3360                                 YYERROR;
3361                         }
3362                         $$ = calloc(1, sizeof(struct node_port));
3363                         if ($$ == NULL)
3364                                 err(1, "port_item: calloc");
3365                         $$->port[0] = $2.a;
3366                         $$->port[1] = $2.b;
3367                         $$->op = $1;
3368                         $$->next = NULL;
3369                         $$->tail = $$;
3370                 }
3371                 | portrange PORTBINARY portrange        {
3372                         if ($1.t || $3.t) {
3373                                 yyerror("':' cannot be used with an other "
3374                                     "port operator");
3375                                 YYERROR;
3376                         }
3377                         $$ = calloc(1, sizeof(struct node_port));
3378                         if ($$ == NULL)
3379                                 err(1, "port_item: calloc");
3380                         $$->port[0] = $1.a;
3381                         $$->port[1] = $3.a;
3382                         $$->op = $2;
3383                         $$->next = NULL;
3384                         $$->tail = $$;
3385                 }
3386                 ;
3387
3388 portplain       : numberstring                  {
3389                         if (parseport($1, &$$, 0) == -1) {
3390                                 free($1);
3391                                 YYERROR;
3392                         }
3393                         free($1);
3394                 }
3395                 ;
3396
3397 portrange       : numberstring                  {
3398                         if (parseport($1, &$$, PPORT_RANGE) == -1) {
3399                                 free($1);
3400                                 YYERROR;
3401                         }
3402                         free($1);
3403                 }
3404                 ;
3405
3406 uids            : uid_item                      { $$ = $1; }
3407                 | '{' optnl uid_list '}'        { $$ = $3; }
3408                 ;
3409
3410 uid_list        : uid_item optnl                { $$ = $1; }
3411                 | uid_list comma uid_item optnl {
3412                         $1->tail->next = $3;
3413                         $1->tail = $3;
3414                         $$ = $1;
3415                 }
3416                 ;
3417
3418 uid_item        : uid                           {
3419                         $$ = calloc(1, sizeof(struct node_uid));
3420                         if ($$ == NULL)
3421                                 err(1, "uid_item: calloc");
3422                         $$->uid[0] = $1;
3423                         $$->uid[1] = $1;
3424                         $$->op = PF_OP_EQ;
3425                         $$->next = NULL;
3426                         $$->tail = $$;
3427                 }
3428                 | unaryop uid                   {
3429                         if ($2 == UID_MAX && $1 != PF_OP_EQ && $1 != PF_OP_NE) {
3430                                 yyerror("user unknown requires operator = or "
3431                                     "!=");
3432                                 YYERROR;
3433                         }
3434                         $$ = calloc(1, sizeof(struct node_uid));
3435                         if ($$ == NULL)
3436                                 err(1, "uid_item: calloc");
3437                         $$->uid[0] = $2;
3438                         $$->uid[1] = $2;
3439                         $$->op = $1;
3440                         $$->next = NULL;
3441                         $$->tail = $$;
3442                 }
3443                 | uid PORTBINARY uid            {
3444                         if ($1 == UID_MAX || $3 == UID_MAX) {
3445                                 yyerror("user unknown requires operator = or "
3446                                     "!=");
3447                                 YYERROR;
3448                         }
3449                         $$ = calloc(1, sizeof(struct node_uid));
3450                         if ($$ == NULL)
3451                                 err(1, "uid_item: calloc");
3452                         $$->uid[0] = $1;
3453                         $$->uid[1] = $3;
3454                         $$->op = $2;
3455                         $$->next = NULL;
3456                         $$->tail = $$;
3457                 }
3458                 ;
3459
3460 uid             : STRING                        {
3461                         if (!strcmp($1, "unknown"))
3462                                 $$ = UID_MAX;
3463                         else {
3464                                 struct passwd   *pw;
3465
3466                                 if ((pw = getpwnam($1)) == NULL) {
3467                                         yyerror("unknown user %s", $1);
3468                                         free($1);
3469                                         YYERROR;
3470                                 }
3471                                 $$ = pw->pw_uid;
3472                         }
3473                         free($1);
3474                 }
3475                 | NUMBER                        {
3476                         if ($1 < 0 || $1 >= UID_MAX) {
3477                                 yyerror("illegal uid value %lu", $1);
3478                                 YYERROR;
3479                         }
3480                         $$ = $1;
3481                 }
3482                 ;
3483
3484 gids            : gid_item                      { $$ = $1; }
3485                 | '{' optnl gid_list '}'        { $$ = $3; }
3486                 ;
3487
3488 gid_list        : gid_item optnl                { $$ = $1; }
3489                 | gid_list comma gid_item optnl {
3490                         $1->tail->next = $3;
3491                         $1->tail = $3;
3492                         $$ = $1;
3493                 }
3494                 ;
3495
3496 gid_item        : gid                           {
3497                         $$ = calloc(1, sizeof(struct node_gid));
3498                         if ($$ == NULL)
3499                                 err(1, "gid_item: calloc");
3500                         $$->gid[0] = $1;
3501                         $$->gid[1] = $1;
3502                         $$->op = PF_OP_EQ;
3503                         $$->next = NULL;
3504                         $$->tail = $$;
3505                 }
3506                 | unaryop gid                   {
3507                         if ($2 == GID_MAX && $1 != PF_OP_EQ && $1 != PF_OP_NE) {
3508                                 yyerror("group unknown requires operator = or "
3509                                     "!=");
3510                                 YYERROR;
3511                         }
3512                         $$ = calloc(1, sizeof(struct node_gid));
3513                         if ($$ == NULL)
3514                                 err(1, "gid_item: calloc");
3515                         $$->gid[0] = $2;
3516                         $$->gid[1] = $2;
3517                         $$->op = $1;
3518                         $$->next = NULL;
3519                         $$->tail = $$;
3520                 }
3521                 | gid PORTBINARY gid            {
3522                         if ($1 == GID_MAX || $3 == GID_MAX) {
3523                                 yyerror("group unknown requires operator = or "
3524                                     "!=");
3525                                 YYERROR;
3526                         }
3527                         $$ = calloc(1, sizeof(struct node_gid));
3528                         if ($$ == NULL)
3529                                 err(1, "gid_item: calloc");
3530                         $$->gid[0] = $1;
3531                         $$->gid[1] = $3;
3532                         $$->op = $2;
3533                         $$->next = NULL;
3534                         $$->tail = $$;
3535                 }
3536                 ;
3537
3538 gid             : STRING                        {
3539                         if (!strcmp($1, "unknown"))
3540                                 $$ = GID_MAX;
3541                         else {
3542                                 struct group    *grp;
3543
3544                                 if ((grp = getgrnam($1)) == NULL) {
3545                                         yyerror("unknown group %s", $1);
3546                                         free($1);
3547                                         YYERROR;
3548                                 }
3549                                 $$ = grp->gr_gid;
3550                         }
3551                         free($1);
3552                 }
3553                 | NUMBER                        {
3554                         if ($1 < 0 || $1 >= GID_MAX) {
3555                                 yyerror("illegal gid value %lu", $1);
3556                                 YYERROR;
3557                         }
3558                         $$ = $1;
3559                 }
3560                 ;
3561
3562 flag            : STRING                        {
3563                         int     f;
3564
3565                         if ((f = parse_flags($1)) < 0) {
3566                                 yyerror("bad flags %s", $1);
3567                                 free($1);
3568                                 YYERROR;
3569                         }
3570                         free($1);
3571                         $$.b1 = f;
3572                 }
3573                 ;
3574
3575 flags           : FLAGS flag '/' flag   { $$.b1 = $2.b1; $$.b2 = $4.b1; }
3576                 | FLAGS '/' flag        { $$.b1 = 0; $$.b2 = $3.b1; }
3577                 | FLAGS ANY             { $$.b1 = 0; $$.b2 = 0; }
3578                 ;
3579
3580 icmpspec        : ICMPTYPE icmp_item                    { $$ = $2; }
3581                 | ICMPTYPE '{' optnl icmp_list '}'      { $$ = $4; }
3582                 | ICMP6TYPE icmp6_item                  { $$ = $2; }
3583                 | ICMP6TYPE '{' optnl icmp6_list '}'    { $$ = $4; }
3584                 ;
3585
3586 icmp_list       : icmp_item optnl               { $$ = $1; }
3587                 | icmp_list comma icmp_item optnl {
3588                         $1->tail->next = $3;
3589                         $1->tail = $3;
3590                         $$ = $1;
3591                 }
3592                 ;
3593
3594 icmp6_list      : icmp6_item optnl              { $$ = $1; }
3595                 | icmp6_list comma icmp6_item optnl {
3596                         $1->tail->next = $3;
3597                         $1->tail = $3;
3598                         $$ = $1;
3599                 }
3600                 ;
3601
3602 icmp_item       : icmptype              {
3603                         $$ = calloc(1, sizeof(struct node_icmp));
3604                         if ($$ == NULL)
3605                                 err(1, "icmp_item: calloc");
3606                         $$->type = $1;
3607                         $$->code = 0;
3608                         $$->proto = IPPROTO_ICMP;
3609                         $$->next = NULL;
3610                         $$->tail = $$;
3611                 }
3612                 | icmptype CODE STRING  {
3613                         const struct icmpcodeent        *p;
3614
3615                         if ((p = geticmpcodebyname($1-1, $3, AF_INET)) == NULL) {
3616                                 yyerror("unknown icmp-code %s", $3);
3617                                 free($3);
3618                                 YYERROR;
3619                         }
3620
3621                         free($3);
3622                         $$ = calloc(1, sizeof(struct node_icmp));
3623                         if ($$ == NULL)
3624                                 err(1, "icmp_item: calloc");
3625                         $$->type = $1;
3626                         $$->code = p->code + 1;
3627                         $$->proto = IPPROTO_ICMP;
3628                         $$->next = NULL;
3629                         $$->tail = $$;
3630                 }
3631                 | icmptype CODE NUMBER  {
3632                         if ($3 < 0 || $3 > 255) {
3633                                 yyerror("illegal icmp-code %lu", $3);
3634                                 YYERROR;
3635                         }
3636                         $$ = calloc(1, sizeof(struct node_icmp));
3637                         if ($$ == NULL)
3638                                 err(1, "icmp_item: calloc");
3639                         $$->type = $1;
3640                         $$->code = $3 + 1;
3641                         $$->proto = IPPROTO_ICMP;
3642                         $$->next = NULL;
3643                         $$->tail = $$;
3644                 }
3645                 ;
3646
3647 icmp6_item      : icmp6type             {
3648                         $$ = calloc(1, sizeof(struct node_icmp));
3649                         if ($$ == NULL)
3650                                 err(1, "icmp_item: calloc");
3651                         $$->type = $1;
3652                         $$->code = 0;
3653                         $$->proto = IPPROTO_ICMPV6;
3654                         $$->next = NULL;
3655                         $$->tail = $$;
3656                 }
3657                 | icmp6type CODE STRING {
3658                         const struct icmpcodeent        *p;
3659
3660                         if ((p = geticmpcodebyname($1-1, $3, AF_INET6)) == NULL) {
3661                                 yyerror("unknown icmp6-code %s", $3);
3662                                 free($3);
3663                                 YYERROR;
3664                         }
3665                         free($3);
3666
3667                         $$ = calloc(1, sizeof(struct node_icmp));
3668                         if ($$ == NULL)
3669                                 err(1, "icmp_item: calloc");
3670                         $$->type = $1;
3671                         $$->code = p->code + 1;
3672                         $$->proto = IPPROTO_ICMPV6;
3673                         $$->next = NULL;
3674                         $$->tail = $$;
3675                 }
3676                 | icmp6type CODE NUMBER {
3677                         if ($3 < 0 || $3 > 255) {
3678                                 yyerror("illegal icmp-code %lu", $3);
3679                                 YYERROR;
3680                         }
3681                         $$ = calloc(1, sizeof(struct node_icmp));
3682                         if ($$ == NULL)
3683                                 err(1, "icmp_item: calloc");
3684                         $$->type = $1;
3685                         $$->code = $3 + 1;
3686                         $$->proto = IPPROTO_ICMPV6;
3687                         $$->next = NULL;
3688                         $$->tail = $$;
3689                 }
3690                 ;
3691
3692 icmptype        : STRING                        {
3693                         const struct icmptypeent        *p;
3694
3695                         if ((p = geticmptypebyname($1, AF_INET)) == NULL) {
3696                                 yyerror("unknown icmp-type %s", $1);
3697                                 free($1);
3698                                 YYERROR;
3699                         }
3700                         $$ = p->type + 1;
3701                         free($1);
3702                 }
3703                 | NUMBER                        {
3704                         if ($1 < 0 || $1 > 255) {
3705                                 yyerror("illegal icmp-type %lu", $1);
3706                                 YYERROR;
3707                         }
3708                         $$ = $1 + 1;
3709                 }
3710                 ;
3711
3712 icmp6type       : STRING                        {
3713                         const struct icmptypeent        *p;
3714
3715                         if ((p = geticmptypebyname($1, AF_INET6)) ==
3716                             NULL) {
3717                                 yyerror("unknown icmp6-type %s", $1);
3718                                 free($1);
3719                                 YYERROR;
3720                         }
3721                         $$ = p->type + 1;
3722                         free($1);
3723                 }
3724                 | NUMBER                        {
3725                         if ($1 < 0 || $1 > 255) {
3726                                 yyerror("illegal icmp6-type %lu", $1);
3727                                 YYERROR;
3728                         }
3729                         $$ = $1 + 1;
3730                 }
3731                 ;
3732
3733 tos     : STRING                        {
3734                         int val;
3735                         char *end;
3736
3737                         if (map_tos($1, &val))
3738                                 $$ = val;
3739                         else if ($1[0] == '0' && $1[1] == 'x') {
3740                                 errno = 0;
3741                                 $$ = strtoul($1, &end, 16);
3742                                 if (errno || *end != '\0')
3743                                         $$ = 256;
3744                         } else
3745                                 $$ = 256;               /* flag bad argument */
3746                         if ($$ < 0 || $$ > 255) {
3747                                 yyerror("illegal tos value %s", $1);
3748                                 free($1);
3749                                 YYERROR;
3750                         }
3751                         free($1);
3752                 }
3753                 | NUMBER                        {
3754                         $$ = $1;
3755                         if ($$ < 0 || $$ > 255) {
3756                                 yyerror("illegal tos value %s", $1);
3757                                 YYERROR;
3758                         }
3759                 }
3760                 ;
3761
3762 sourcetrack     : SOURCETRACK           { $$ = PF_SRCTRACK; }
3763                 | SOURCETRACK GLOBAL    { $$ = PF_SRCTRACK_GLOBAL; }
3764                 | SOURCETRACK RULE      { $$ = PF_SRCTRACK_RULE; }
3765                 ;
3766
3767 statelock       : IFBOUND {
3768                         $$ = PFRULE_IFBOUND;
3769                 }
3770                 | FLOATING {
3771                         $$ = 0;
3772                 }
3773                 ;
3774
3775 keep            : NO STATE                      {
3776                         $$.action = 0;
3777                         $$.options = NULL;
3778                 }
3779                 | KEEP STATE state_opt_spec     {
3780                         $$.action = PF_STATE_NORMAL;
3781                         $$.options = $3;
3782                 }
3783                 | MODULATE STATE state_opt_spec {
3784                         $$.action = PF_STATE_MODULATE;
3785                         $$.options = $3;
3786                 }
3787                 | SYNPROXY STATE state_opt_spec {
3788                         $$.action = PF_STATE_SYNPROXY;
3789                         $$.options = $3;
3790                 }
3791                 ;
3792
3793 flush           : /* empty */                   { $$ = 0; }
3794                 | FLUSH                         { $$ = PF_FLUSH; }
3795                 | FLUSH GLOBAL                  {
3796                         $$ = PF_FLUSH | PF_FLUSH_GLOBAL;
3797                 }
3798                 ;
3799
3800 state_opt_spec  : '(' state_opt_list ')'        { $$ = $2; }
3801                 | /* empty */                   { $$ = NULL; }
3802                 ;
3803
3804 state_opt_list  : state_opt_item                { $$ = $1; }
3805                 | state_opt_list comma state_opt_item {
3806                         $1->tail->next = $3;
3807                         $1->tail = $3;
3808                         $$ = $1;
3809                 }
3810                 ;
3811
3812 state_opt_item  : MAXIMUM NUMBER                {
3813                         if ($2 < 0 || $2 > UINT_MAX) {
3814                                 yyerror("only positive values permitted");
3815                                 YYERROR;
3816                         }
3817                         $$ = calloc(1, sizeof(struct node_state_opt));
3818                         if ($$ == NULL)
3819                                 err(1, "state_opt_item: calloc");
3820                         $$->type = PF_STATE_OPT_MAX;
3821                         $$->data.max_states = $2;
3822                         $$->next = NULL;
3823                         $$->tail = $$;
3824                 }
3825                 | NOSYNC                                {
3826                         $$ = calloc(1, sizeof(struct node_state_opt));
3827                         if ($$ == NULL)
3828                                 err(1, "state_opt_item: calloc");
3829                         $$->type = PF_STATE_OPT_NOSYNC;
3830                         $$->next = NULL;
3831                         $$->tail = $$;
3832                 }
3833                 | MAXSRCSTATES NUMBER                   {
3834                         if ($2 < 0 || $2 > UINT_MAX) {
3835                                 yyerror("only positive values permitted");
3836                                 YYERROR;
3837                         }
3838                         $$ = calloc(1, sizeof(struct node_state_opt));
3839                         if ($$ == NULL)
3840                                 err(1, "state_opt_item: calloc");
3841                         $$->type = PF_STATE_OPT_MAX_SRC_STATES;
3842                         $$->data.max_src_states = $2;
3843                         $$->next = NULL;
3844                         $$->tail = $$;
3845                 }
3846                 | MAXSRCCONN NUMBER                     {
3847                         if ($2 < 0 || $2 > UINT_MAX) {
3848                                 yyerror("only positive values permitted");
3849                                 YYERROR;
3850                         }
3851                         $$ = calloc(1, sizeof(struct node_state_opt));
3852                         if ($$ == NULL)
3853                                 err(1, "state_opt_item: calloc");
3854                         $$->type = PF_STATE_OPT_MAX_SRC_CONN;
3855                         $$->data.max_src_conn = $2;
3856                         $$->next = NULL;
3857                         $$->tail = $$;
3858                 }
3859                 | MAXSRCCONNRATE NUMBER '/' NUMBER      {
3860                         if ($2 < 0 || $2 > UINT_MAX ||
3861                             $4 < 0 || $4 > UINT_MAX) {
3862                                 yyerror("only positive values permitted");
3863                                 YYERROR;
3864                         }
3865                         $$ = calloc(1, sizeof(struct node_state_opt));
3866                         if ($$ == NULL)
3867                                 err(1, "state_opt_item: calloc");
3868                         $$->type = PF_STATE_OPT_MAX_SRC_CONN_RATE;
3869                         $$->data.max_src_conn_rate.limit = $2;
3870                         $$->data.max_src_conn_rate.seconds = $4;
3871                         $$->next = NULL;
3872                         $$->tail = $$;
3873                 }
3874                 | OVERLOAD '<' STRING '>' flush         {
3875                         if (strlen($3) >= PF_TABLE_NAME_SIZE) {
3876                                 yyerror("table name '%s' too long", $3);
3877                                 free($3);
3878                                 YYERROR;
3879                         }
3880                         $$ = calloc(1, sizeof(struct node_state_opt));
3881                         if ($$ == NULL)
3882                                 err(1, "state_opt_item: calloc");
3883                         if (strlcpy($$->data.overload.tblname, $3,
3884                             PF_TABLE_NAME_SIZE) >= PF_TABLE_NAME_SIZE)
3885                                 errx(1, "state_opt_item: strlcpy");
3886                         free($3);
3887                         $$->type = PF_STATE_OPT_OVERLOAD;
3888                         $$->data.overload.flush = $5;
3889                         $$->next = NULL;
3890                         $$->tail = $$;
3891                 }
3892                 | MAXSRCNODES NUMBER                    {
3893                         if ($2 < 0 || $2 > UINT_MAX) {
3894                                 yyerror("only positive values permitted");
3895                                 YYERROR;
3896                         }
3897                         $$ = calloc(1, sizeof(struct node_state_opt));
3898                         if ($$ == NULL)
3899                                 err(1, "state_opt_item: calloc");
3900                         $$->type = PF_STATE_OPT_MAX_SRC_NODES;
3901                         $$->data.max_src_nodes = $2;
3902                         $$->next = NULL;
3903                         $$->tail = $$;
3904                 }
3905                 | sourcetrack {
3906                         $$ = calloc(1, sizeof(struct node_state_opt));
3907                         if ($$ == NULL)
3908                                 err(1, "state_opt_item: calloc");
3909                         $$->type = PF_STATE_OPT_SRCTRACK;
3910                         $$->data.src_track = $1;
3911                         $$->next = NULL;
3912                         $$->tail = $$;
3913                 }
3914                 | statelock {
3915                         $$ = calloc(1, sizeof(struct node_state_opt));
3916                         if ($$ == NULL)
3917                                 err(1, "state_opt_item: calloc");
3918                         $$->type = PF_STATE_OPT_STATELOCK;
3919                         $$->data.statelock = $1;
3920                         $$->next = NULL;
3921                         $$->tail = $$;
3922                 }
3923                 | SLOPPY {
3924                         $$ = calloc(1, sizeof(struct node_state_opt));
3925                         if ($$ == NULL)
3926                                 err(1, "state_opt_item: calloc");
3927                         $$->type = PF_STATE_OPT_SLOPPY;
3928                         $$->next = NULL;
3929                         $$->tail = $$;
3930                 }
3931                 | STRING NUMBER                 {
3932                         int     i;
3933
3934                         if ($2 < 0 || $2 > UINT_MAX) {
3935                                 yyerror("only positive values permitted");
3936                                 YYERROR;
3937                         }
3938                         for (i = 0; pf_timeouts[i].name &&
3939                             strcmp(pf_timeouts[i].name, $1); ++i)
3940                                 ;       /* nothing */
3941                         if (!pf_timeouts[i].name) {
3942                                 yyerror("illegal timeout name %s", $1);
3943                                 free($1);
3944                                 YYERROR;
3945                         }
3946                         if (strchr(pf_timeouts[i].name, '.') == NULL) {
3947                                 yyerror("illegal state timeout %s", $1);
3948                                 free($1);
3949                                 YYERROR;
3950                         }
3951                         free($1);
3952                         $$ = calloc(1, sizeof(struct node_state_opt));
3953                         if ($$ == NULL)
3954                                 err(1, "state_opt_item: calloc");
3955                         $$->type = PF_STATE_OPT_TIMEOUT;
3956                         $$->data.timeout.number = pf_timeouts[i].timeout;
3957                         $$->data.timeout.seconds = $2;
3958                         $$->next = NULL;
3959                         $$->tail = $$;
3960                 }
3961                 ;
3962
3963 label           : LABEL STRING                  {
3964                         $$ = $2;
3965                 }
3966                 ;
3967
3968 qname           : QUEUE STRING                          {
3969                         $$.qname = $2;
3970                         $$.pqname = NULL;
3971                 }
3972                 | QUEUE '(' STRING ')'                  {
3973                         $$.qname = $3;
3974                         $$.pqname = NULL;
3975                 }
3976                 | QUEUE '(' STRING comma STRING ')'     {
3977                         $$.qname = $3;
3978                         $$.pqname = $5;
3979                 }
3980                 ;
3981
3982 no              : /* empty */                   { $$ = 0; }
3983                 | NO                            { $$ = 1; }
3984                 ;
3985
3986 portstar        : numberstring                  {
3987                         if (parseport($1, &$$, PPORT_RANGE|PPORT_STAR) == -1) {
3988                                 free($1);
3989                                 YYERROR;
3990                         }
3991                         free($1);
3992                 }
3993                 ;
3994
3995 redirspec       : host                          { $$ = $1; }
3996                 | '{' optnl redir_host_list '}' { $$ = $3; }
3997                 ;
3998
3999 redir_host_list : host optnl                    { $$ = $1; }
4000                 | redir_host_list comma host optnl {
4001                         $1->tail->next = $3;
4002                         $1->tail = $3->tail;
4003                         $$ = $1;
4004                 }
4005                 ;
4006
4007 redirpool       : /* empty */                   { $$ = NULL; }
4008                 | ARROW redirspec               {
4009                         $$ = calloc(1, sizeof(struct redirection));
4010                         if ($$ == NULL)
4011                                 err(1, "redirection: calloc");
4012                         $$->host = $2;
4013                         $$->rport.a = $$->rport.b = $$->rport.t = 0;
4014                 }
4015                 | ARROW redirspec PORT portstar {
4016                         $$ = calloc(1, sizeof(struct redirection));
4017                         if ($$ == NULL)
4018                                 err(1, "redirection: calloc");
4019                         $$->host = $2;
4020                         $$->rport = $4;
4021                 }
4022                 ;
4023
4024 hashkey         : /* empty */
4025                 {
4026                         $$ = calloc(1, sizeof(struct pf_poolhashkey));
4027                         if ($$ == NULL)
4028                                 err(1, "hashkey: calloc");
4029                         $$->key32[0] = arc4random();
4030                         $$->key32[1] = arc4random();
4031                         $$->key32[2] = arc4random();
4032                         $$->key32[3] = arc4random();
4033                 }
4034                 | string
4035                 {
4036                         if (!strncmp($1, "0x", 2)) {
4037                                 if (strlen($1) != 34) {
4038                                         free($1);
4039                                         yyerror("hex key must be 128 bits "
4040                                                 "(32 hex digits) long");
4041                                         YYERROR;
4042                                 }
4043                                 $$ = calloc(1, sizeof(struct pf_poolhashkey));
4044                                 if ($$ == NULL)
4045                                         err(1, "hashkey: calloc");
4046
4047                                 if (sscanf($1, "0x%8x%8x%8x%8x",
4048                                     &$$->key32[0], &$$->key32[1],
4049                                     &$$->key32[2], &$$->key32[3]) != 4) {
4050                                         free($$);
4051                                         free($1);
4052                                         yyerror("invalid hex key");
4053                                         YYERROR;
4054                                 }
4055                         } else {
4056                                 MD5_CTX context;
4057
4058                                 $$ = calloc(1, sizeof(struct pf_poolhashkey));
4059                                 if ($$ == NULL)
4060                                         err(1, "hashkey: calloc");
4061                                 MD5Init(&context);
4062                                 MD5Update(&context, (unsigned char *)$1,
4063                                     strlen($1));
4064                                 MD5Final((unsigned char *)$$, &context);
4065                                 HTONL($$->key32[0]);
4066                                 HTONL($$->key32[1]);
4067                                 HTONL($$->key32[2]);
4068                                 HTONL($$->key32[3]);
4069                         }
4070                         free($1);
4071                 }
4072                 ;
4073
4074 pool_opts       :       { bzero(&pool_opts, sizeof pool_opts); }
4075                     pool_opts_l
4076                         { $$ = pool_opts; }
4077                 | /* empty */   {
4078                         bzero(&pool_opts, sizeof pool_opts);
4079                         $$ = pool_opts;
4080                 }
4081                 ;
4082
4083 pool_opts_l     : pool_opts_l pool_opt
4084                 | pool_opt
4085                 ;
4086
4087 pool_opt        : BITMASK       {
4088                         if (pool_opts.type) {
4089                                 yyerror("pool type cannot be redefined");
4090                                 YYERROR;
4091                         }
4092                         pool_opts.type =  PF_POOL_BITMASK;
4093                 }
4094                 | RANDOM        {
4095                         if (pool_opts.type) {
4096                                 yyerror("pool type cannot be redefined");
4097                                 YYERROR;
4098                         }
4099                         pool_opts.type = PF_POOL_RANDOM;
4100                 }
4101                 | SOURCEHASH hashkey {
4102                         if (pool_opts.type) {
4103                                 yyerror("pool type cannot be redefined");
4104                                 YYERROR;
4105                         }
4106                         pool_opts.type = PF_POOL_SRCHASH;
4107                         pool_opts.key = $2;
4108                 }
4109                 | ROUNDROBIN    {
4110                         if (pool_opts.type) {
4111                                 yyerror("pool type cannot be redefined");
4112                                 YYERROR;
4113                         }
4114                         pool_opts.type = PF_POOL_ROUNDROBIN;
4115                 }
4116                 | STATICPORT    {
4117                         if (pool_opts.staticport) {
4118                                 yyerror("static-port cannot be redefined");
4119                                 YYERROR;
4120                         }
4121                         pool_opts.staticport = 1;
4122                 }
4123                 | STICKYADDRESS {
4124                         if (filter_opts.marker & POM_STICKYADDRESS) {
4125                                 yyerror("sticky-address cannot be redefined");
4126                                 YYERROR;
4127                         }
4128                         pool_opts.marker |= POM_STICKYADDRESS;
4129                         pool_opts.opts |= PF_POOL_STICKYADDR;
4130                 }
4131                 | MAPEPORTSET number '/' number '/' number {
4132                         if (pool_opts.mape.offset) {
4133                                 yyerror("map-e-portset cannot be redefined");
4134                                 YYERROR;
4135                         }
4136                         if (pool_opts.type) {
4137                                 yyerror("map-e-portset cannot be used with "
4138                                         "address pools");
4139                                 YYERROR;
4140                         }
4141                         if ($2 <= 0 || $2 >= 16) {
4142                                 yyerror("MAP-E PSID offset must be 1-15");
4143                                 YYERROR;
4144                         }
4145                         if ($4 < 0 || $4 >= 16 || $2 + $4 > 16) {
4146                                 yyerror("Invalid MAP-E PSID length");
4147                                 YYERROR;
4148                         } else if ($4 == 0) {
4149                                 yyerror("PSID Length = 0: this means"
4150                                     " you do not need MAP-E");
4151                                 YYERROR;
4152                         }
4153                         if ($6 < 0 || $6 > 65535) {
4154                                 yyerror("Invalid MAP-E PSID");
4155                                 YYERROR;
4156                         }
4157                         pool_opts.mape.offset = $2;
4158                         pool_opts.mape.psidlen = $4;
4159                         pool_opts.mape.psid = $6;
4160                 }
4161                 ;
4162
4163 redirection     : /* empty */                   { $$ = NULL; }
4164                 | ARROW host                    {
4165                         $$ = calloc(1, sizeof(struct redirection));
4166                         if ($$ == NULL)
4167                                 err(1, "redirection: calloc");
4168                         $$->host = $2;
4169                         $$->rport.a = $$->rport.b = $$->rport.t = 0;
4170                 }
4171                 | ARROW host PORT portstar      {
4172                         $$ = calloc(1, sizeof(struct redirection));
4173                         if ($$ == NULL)
4174                                 err(1, "redirection: calloc");
4175                         $$->host = $2;
4176                         $$->rport = $4;
4177                 }
4178                 ;
4179
4180 natpasslog      : /* empty */   { $$.b1 = $$.b2 = 0; $$.w2 = 0; }
4181                 | PASS          { $$.b1 = 1; $$.b2 = 0; $$.w2 = 0; }
4182                 | PASS log      { $$.b1 = 1; $$.b2 = $2.log; $$.w2 = $2.logif; }
4183                 | log           { $$.b1 = 0; $$.b2 = $1.log; $$.w2 = $1.logif; }
4184                 ;
4185
4186 nataction       : no NAT natpasslog {
4187                         if ($1 && $3.b1) {
4188                                 yyerror("\"pass\" not valid with \"no\"");
4189                                 YYERROR;
4190                         }
4191                         if ($1)
4192                                 $$.b1 = PF_NONAT;
4193                         else
4194                                 $$.b1 = PF_NAT;
4195                         $$.b2 = $3.b1;
4196                         $$.w = $3.b2;
4197                         $$.w2 = $3.w2;
4198                 }
4199                 | no RDR natpasslog {
4200                         if ($1 && $3.b1) {
4201                                 yyerror("\"pass\" not valid with \"no\"");
4202                                 YYERROR;
4203                         }
4204                         if ($1)
4205                                 $$.b1 = PF_NORDR;
4206                         else
4207                                 $$.b1 = PF_RDR;
4208                         $$.b2 = $3.b1;
4209                         $$.w = $3.b2;
4210                         $$.w2 = $3.w2;
4211                 }
4212                 ;
4213
4214 natrule         : nataction interface af proto fromto tag tagged rtable
4215                     redirpool pool_opts
4216                 {
4217                         struct pfctl_rule       r;
4218
4219                         if (check_rulestate(PFCTL_STATE_NAT))
4220                                 YYERROR;
4221
4222                         memset(&r, 0, sizeof(r));
4223
4224                         r.action = $1.b1;
4225                         r.natpass = $1.b2;
4226                         r.log = $1.w;
4227                         r.logif = $1.w2;
4228                         r.af = $3;
4229
4230                         if (!r.af) {
4231                                 if ($5.src.host && $5.src.host->af &&
4232                                     !$5.src.host->ifindex)
4233                                         r.af = $5.src.host->af;
4234                                 else if ($5.dst.host && $5.dst.host->af &&
4235                                     !$5.dst.host->ifindex)
4236                                         r.af = $5.dst.host->af;
4237                         }
4238
4239                         if ($6 != NULL)
4240                                 if (strlcpy(r.tagname, $6, PF_TAG_NAME_SIZE) >=
4241                                     PF_TAG_NAME_SIZE) {
4242                                         yyerror("tag too long, max %u chars",
4243                                             PF_TAG_NAME_SIZE - 1);
4244                                         YYERROR;
4245                                 }
4246
4247                         if ($7.name)
4248                                 if (strlcpy(r.match_tagname, $7.name,
4249                                     PF_TAG_NAME_SIZE) >= PF_TAG_NAME_SIZE) {
4250                                         yyerror("tag too long, max %u chars",
4251                                             PF_TAG_NAME_SIZE - 1);
4252                                         YYERROR;
4253                                 }
4254                         r.match_tag_not = $7.neg;
4255                         r.rtableid = $8;
4256
4257                         if (r.action == PF_NONAT || r.action == PF_NORDR) {
4258                                 if ($9 != NULL) {
4259                                         yyerror("translation rule with 'no' "
4260                                             "does not need '->'");
4261                                         YYERROR;
4262                                 }
4263                         } else {
4264                                 if ($9 == NULL || $9->host == NULL) {
4265                                         yyerror("translation rule requires '-> "
4266                                             "address'");
4267                                         YYERROR;
4268                                 }
4269                                 if (!r.af && ! $9->host->ifindex)
4270                                         r.af = $9->host->af;
4271
4272                                 remove_invalid_hosts(&$9->host, &r.af);
4273                                 if (invalid_redirect($9->host, r.af))
4274                                         YYERROR;
4275                                 if (check_netmask($9->host, r.af))
4276                                         YYERROR;
4277
4278                                 r.rpool.proxy_port[0] = ntohs($9->rport.a);
4279
4280                                 switch (r.action) {
4281                                 case PF_RDR:
4282                                         if (!$9->rport.b && $9->rport.t &&
4283                                             $5.dst.port != NULL) {
4284                                                 r.rpool.proxy_port[1] =
4285                                                     ntohs($9->rport.a) +
4286                                                     (ntohs(
4287                                                     $5.dst.port->port[1]) -
4288                                                     ntohs(
4289                                                     $5.dst.port->port[0]));
4290                                         } else
4291                                                 r.rpool.proxy_port[1] =
4292                                                     ntohs($9->rport.b);
4293                                         break;
4294                                 case PF_NAT:
4295                                         r.rpool.proxy_port[1] =
4296                                             ntohs($9->rport.b);
4297                                         if (!r.rpool.proxy_port[0] &&
4298                                             !r.rpool.proxy_port[1]) {
4299                                                 r.rpool.proxy_port[0] =
4300                                                     PF_NAT_PROXY_PORT_LOW;
4301                                                 r.rpool.proxy_port[1] =
4302                                                     PF_NAT_PROXY_PORT_HIGH;
4303                                         } else if (!r.rpool.proxy_port[1])
4304                                                 r.rpool.proxy_port[1] =
4305                                                     r.rpool.proxy_port[0];
4306                                         break;
4307                                 default:
4308                                         break;
4309                                 }
4310
4311                                 r.rpool.opts = $10.type;
4312                                 if ((r.rpool.opts & PF_POOL_TYPEMASK) ==
4313                                     PF_POOL_NONE && ($9->host->next != NULL ||
4314                                     $9->host->addr.type == PF_ADDR_TABLE ||
4315                                     DYNIF_MULTIADDR($9->host->addr)))
4316                                         r.rpool.opts = PF_POOL_ROUNDROBIN;
4317                                 if ((r.rpool.opts & PF_POOL_TYPEMASK) !=
4318                                     PF_POOL_ROUNDROBIN &&
4319                                     disallow_table($9->host, "tables are only "
4320                                     "supported in round-robin redirection "
4321                                     "pools"))
4322                                         YYERROR;
4323                                 if ((r.rpool.opts & PF_POOL_TYPEMASK) !=
4324                                     PF_POOL_ROUNDROBIN &&
4325                                     disallow_alias($9->host, "interface (%s) "
4326                                     "is only supported in round-robin "
4327                                     "redirection pools"))
4328                                         YYERROR;
4329                                 if ($9->host->next != NULL) {
4330                                         if ((r.rpool.opts & PF_POOL_TYPEMASK) !=
4331                                             PF_POOL_ROUNDROBIN) {
4332                                                 yyerror("only round-robin "
4333                                                     "valid for multiple "
4334                                                     "redirection addresses");
4335                                                 YYERROR;
4336                                         }
4337                                 }
4338                         }
4339
4340                         if ($10.key != NULL)
4341                                 memcpy(&r.rpool.key, $10.key,
4342                                     sizeof(struct pf_poolhashkey));
4343
4344                          if ($10.opts)
4345                                 r.rpool.opts |= $10.opts;
4346
4347                         if ($10.staticport) {
4348                                 if (r.action != PF_NAT) {
4349                                         yyerror("the 'static-port' option is "
4350                                             "only valid with nat rules");
4351                                         YYERROR;
4352                                 }
4353                                 if (r.rpool.proxy_port[0] !=
4354                                     PF_NAT_PROXY_PORT_LOW &&
4355                                     r.rpool.proxy_port[1] !=
4356                                     PF_NAT_PROXY_PORT_HIGH) {
4357                                         yyerror("the 'static-port' option can't"
4358                                             " be used when specifying a port"
4359                                             " range");
4360                                         YYERROR;
4361                                 }
4362                                 r.rpool.proxy_port[0] = 0;
4363                                 r.rpool.proxy_port[1] = 0;
4364                         }
4365
4366                         if ($10.mape.offset) {
4367                                 if (r.action != PF_NAT) {
4368                                         yyerror("the 'map-e-portset' option is"
4369                                             " only valid with nat rules");
4370                                         YYERROR;
4371                                 }
4372                                 if ($10.staticport) {
4373                                         yyerror("the 'map-e-portset' option"
4374                                             " can't be used 'static-port'");
4375                                         YYERROR;
4376                                 }
4377                                 if (r.rpool.proxy_port[0] !=
4378                                     PF_NAT_PROXY_PORT_LOW &&
4379                                     r.rpool.proxy_port[1] !=
4380                                     PF_NAT_PROXY_PORT_HIGH) {
4381                                         yyerror("the 'map-e-portset' option"
4382                                             " can't be used when specifying"
4383                                             " a port range");
4384                                         YYERROR;
4385                                 }
4386                                 r.rpool.mape = $10.mape;
4387                         }
4388
4389                         expand_rule(&r, $2, $9 == NULL ? NULL : $9->host, $4,
4390                             $5.src_os, $5.src.host, $5.src.port, $5.dst.host,
4391                             $5.dst.port, 0, 0, 0, "");
4392                         free($9);
4393                 }
4394                 ;
4395
4396 binatrule       : no BINAT natpasslog interface af proto FROM ipspec toipspec tag
4397                     tagged rtable redirection
4398                 {
4399                         struct pfctl_rule       binat;
4400                         struct pf_pooladdr      *pa;
4401
4402                         if (check_rulestate(PFCTL_STATE_NAT))
4403                                 YYERROR;
4404                         if (disallow_urpf_failed($9, "\"urpf-failed\" is not "
4405                             "permitted as a binat destination"))
4406                                 YYERROR;
4407
4408                         memset(&binat, 0, sizeof(binat));
4409
4410                         if ($1 && $3.b1) {
4411                                 yyerror("\"pass\" not valid with \"no\"");
4412                                 YYERROR;
4413                         }
4414                         if ($1)
4415                                 binat.action = PF_NOBINAT;
4416                         else
4417                                 binat.action = PF_BINAT;
4418                         binat.natpass = $3.b1;
4419                         binat.log = $3.b2;
4420                         binat.logif = $3.w2;
4421                         binat.af = $5;
4422                         if (!binat.af && $8 != NULL && $8->af)
4423                                 binat.af = $8->af;
4424                         if (!binat.af && $9 != NULL && $9->af)
4425                                 binat.af = $9->af;
4426
4427                         if (!binat.af && $13 != NULL && $13->host)
4428                                 binat.af = $13->host->af;
4429                         if (!binat.af) {
4430                                 yyerror("address family (inet/inet6) "
4431                                     "undefined");
4432                                 YYERROR;
4433                         }
4434
4435                         if ($4 != NULL) {
4436                                 memcpy(binat.ifname, $4->ifname,
4437                                     sizeof(binat.ifname));
4438                                 binat.ifnot = $4->not;
4439                                 free($4);
4440                         }
4441
4442                         if ($10 != NULL)
4443                                 if (strlcpy(binat.tagname, $10,
4444                                     PF_TAG_NAME_SIZE) >= PF_TAG_NAME_SIZE) {
4445                                         yyerror("tag too long, max %u chars",
4446                                             PF_TAG_NAME_SIZE - 1);
4447                                         YYERROR;
4448                                 }
4449                         if ($11.name)
4450                                 if (strlcpy(binat.match_tagname, $11.name,
4451                                     PF_TAG_NAME_SIZE) >= PF_TAG_NAME_SIZE) {
4452                                         yyerror("tag too long, max %u chars",
4453                                             PF_TAG_NAME_SIZE - 1);
4454                                         YYERROR;
4455                                 }
4456                         binat.match_tag_not = $11.neg;
4457                         binat.rtableid = $12;
4458
4459                         if ($6 != NULL) {
4460                                 binat.proto = $6->proto;
4461                                 free($6);
4462                         }
4463
4464                         if ($8 != NULL && disallow_table($8, "invalid use of "
4465                             "table <%s> as the source address of a binat rule"))
4466                                 YYERROR;
4467                         if ($8 != NULL && disallow_alias($8, "invalid use of "
4468                             "interface (%s) as the source address of a binat "
4469                             "rule"))
4470                                 YYERROR;
4471                         if ($13 != NULL && $13->host != NULL && disallow_table(
4472                             $13->host, "invalid use of table <%s> as the "
4473                             "redirect address of a binat rule"))
4474                                 YYERROR;
4475                         if ($13 != NULL && $13->host != NULL && disallow_alias(
4476                             $13->host, "invalid use of interface (%s) as the "
4477                             "redirect address of a binat rule"))
4478                                 YYERROR;
4479
4480                         if ($8 != NULL) {
4481                                 if ($8->next) {
4482                                         yyerror("multiple binat ip addresses");
4483                                         YYERROR;
4484                                 }
4485                                 if ($8->addr.type == PF_ADDR_DYNIFTL)
4486                                         $8->af = binat.af;
4487                                 if ($8->af != binat.af) {
4488                                         yyerror("binat ip versions must match");
4489                                         YYERROR;
4490                                 }
4491                                 if (check_netmask($8, binat.af))
4492                                         YYERROR;
4493                                 memcpy(&binat.src.addr, &$8->addr,
4494                                     sizeof(binat.src.addr));
4495                                 free($8);
4496                         }
4497                         if ($9 != NULL) {
4498                                 if ($9->next) {
4499                                         yyerror("multiple binat ip addresses");
4500                                         YYERROR;
4501                                 }
4502                                 if ($9->af != binat.af && $9->af) {
4503                                         yyerror("binat ip versions must match");
4504                                         YYERROR;
4505                                 }
4506                                 if (check_netmask($9, binat.af))
4507                                         YYERROR;
4508                                 memcpy(&binat.dst.addr, &$9->addr,
4509                                     sizeof(binat.dst.addr));
4510                                 binat.dst.neg = $9->not;
4511                                 free($9);
4512                         }
4513
4514                         if (binat.action == PF_NOBINAT) {
4515                                 if ($13 != NULL) {
4516                                         yyerror("'no binat' rule does not need"
4517                                             " '->'");
4518                                         YYERROR;
4519                                 }
4520                         } else {
4521                                 if ($13 == NULL || $13->host == NULL) {
4522                                         yyerror("'binat' rule requires"
4523                                             " '-> address'");
4524                                         YYERROR;
4525                                 }
4526
4527                                 remove_invalid_hosts(&$13->host, &binat.af);
4528                                 if (invalid_redirect($13->host, binat.af))
4529                                         YYERROR;
4530                                 if ($13->host->next != NULL) {
4531                                         yyerror("binat rule must redirect to "
4532                                             "a single address");
4533                                         YYERROR;
4534                                 }
4535                                 if (check_netmask($13->host, binat.af))
4536                                         YYERROR;
4537
4538                                 if (!PF_AZERO(&binat.src.addr.v.a.mask,
4539                                     binat.af) &&
4540                                     !PF_AEQ(&binat.src.addr.v.a.mask,
4541                                     &$13->host->addr.v.a.mask, binat.af)) {
4542                                         yyerror("'binat' source mask and "
4543                                             "redirect mask must be the same");
4544                                         YYERROR;
4545                                 }
4546
4547                                 TAILQ_INIT(&binat.rpool.list);
4548                                 pa = calloc(1, sizeof(struct pf_pooladdr));
4549                                 if (pa == NULL)
4550                                         err(1, "binat: calloc");
4551                                 pa->addr = $13->host->addr;
4552                                 pa->ifname[0] = 0;
4553                                 TAILQ_INSERT_TAIL(&binat.rpool.list,
4554                                     pa, entries);
4555
4556                                 free($13);
4557                         }
4558
4559                         pfctl_append_rule(pf, &binat, "");
4560                 }
4561                 ;
4562
4563 tag             : /* empty */           { $$ = NULL; }
4564                 | TAG STRING            { $$ = $2; }
4565                 ;
4566
4567 tagged          : /* empty */           { $$.neg = 0; $$.name = NULL; }
4568                 | not TAGGED string     { $$.neg = $1; $$.name = $3; }
4569                 ;
4570
4571 rtable          : /* empty */           { $$ = -1; }
4572                 | RTABLE NUMBER         {
4573                         if ($2 < 0 || $2 > rt_tableid_max()) {
4574                                 yyerror("invalid rtable id");
4575                                 YYERROR;
4576                         }
4577                         $$ = $2;
4578                 }
4579                 ;
4580
4581 route_host      : STRING                        {
4582                         $$ = calloc(1, sizeof(struct node_host));
4583                         if ($$ == NULL)
4584                                 err(1, "route_host: calloc");
4585                         $$->ifname = strdup($1);
4586                         set_ipmask($$, 128);
4587                         $$->next = NULL;
4588                         $$->tail = $$;
4589                 }
4590                 | '(' STRING host ')'           {
4591                         struct node_host *n;
4592
4593                         $$ = $3;
4594                         for (n = $3; n != NULL; n = n->next)
4595                                 n->ifname = strdup($2);
4596                 }
4597                 ;
4598
4599 route_host_list : route_host optnl                      { $$ = $1; }
4600                 | route_host_list comma route_host optnl {
4601                         if ($1->af == 0)
4602                                 $1->af = $3->af;
4603                         if ($1->af != $3->af) {
4604                                 yyerror("all pool addresses must be in the "
4605                                     "same address family");
4606                                 YYERROR;
4607                         }
4608                         $1->tail->next = $3;
4609                         $1->tail = $3->tail;
4610                         $$ = $1;
4611                 }
4612                 ;
4613
4614 routespec       : route_host                    { $$ = $1; }
4615                 | '{' optnl route_host_list '}' { $$ = $3; }
4616                 ;
4617
4618 route           : /* empty */                   {
4619                         $$.host = NULL;
4620                         $$.rt = 0;
4621                         $$.pool_opts = 0;
4622                 }
4623                 | FASTROUTE {
4624                         /* backwards-compat */
4625                         $$.host = NULL;
4626                         $$.rt = 0;
4627                         $$.pool_opts = 0;
4628                 }
4629                 | ROUTETO routespec pool_opts {
4630                         $$.host = $2;
4631                         $$.rt = PF_ROUTETO;
4632                         $$.pool_opts = $3.type | $3.opts;
4633                         if ($3.key != NULL)
4634                                 $$.key = $3.key;
4635                 }
4636                 | REPLYTO routespec pool_opts {
4637                         $$.host = $2;
4638                         $$.rt = PF_REPLYTO;
4639                         $$.pool_opts = $3.type | $3.opts;
4640                         if ($3.key != NULL)
4641                                 $$.key = $3.key;
4642                 }
4643                 | DUPTO routespec pool_opts {
4644                         $$.host = $2;
4645                         $$.rt = PF_DUPTO;
4646                         $$.pool_opts = $3.type | $3.opts;
4647                         if ($3.key != NULL)
4648                                 $$.key = $3.key;
4649                 }
4650                 ;
4651
4652 timeout_spec    : STRING NUMBER
4653                 {
4654                         if (check_rulestate(PFCTL_STATE_OPTION)) {
4655                                 free($1);
4656                                 YYERROR;
4657                         }
4658                         if ($2 < 0 || $2 > UINT_MAX) {
4659                                 yyerror("only positive values permitted");
4660                                 YYERROR;
4661                         }
4662                         if (pfctl_set_timeout(pf, $1, $2, 0) != 0) {
4663                                 yyerror("unknown timeout %s", $1);
4664                                 free($1);
4665                                 YYERROR;
4666                         }
4667                         free($1);
4668                 }
4669                 | INTERVAL NUMBER               {
4670                         if (check_rulestate(PFCTL_STATE_OPTION))
4671                                 YYERROR;
4672                         if ($2 < 0 || $2 > UINT_MAX) {
4673                                 yyerror("only positive values permitted");
4674                                 YYERROR;
4675                         }
4676                         if (pfctl_set_timeout(pf, "interval", $2, 0) != 0)
4677                                 YYERROR;
4678                 }
4679                 ;
4680
4681 timeout_list    : timeout_list comma timeout_spec optnl
4682                 | timeout_spec optnl
4683                 ;
4684
4685 limit_spec      : STRING NUMBER
4686                 {
4687                         if (check_rulestate(PFCTL_STATE_OPTION)) {
4688                                 free($1);
4689                                 YYERROR;
4690                         }
4691                         if ($2 < 0 || $2 > UINT_MAX) {
4692                                 yyerror("only positive values permitted");
4693                                 YYERROR;
4694                         }
4695                         if (pfctl_set_limit(pf, $1, $2) != 0) {
4696                                 yyerror("unable to set limit %s %u", $1, $2);
4697                                 free($1);
4698                                 YYERROR;
4699                         }
4700                         free($1);
4701                 }
4702                 ;
4703
4704 limit_list      : limit_list comma limit_spec optnl
4705                 | limit_spec optnl
4706                 ;
4707
4708 comma           : ','
4709                 | /* empty */
4710                 ;
4711
4712 yesno           : NO                    { $$ = 0; }
4713                 | STRING                {
4714                         if (!strcmp($1, "yes"))
4715                                 $$ = 1;
4716                         else {
4717                                 yyerror("invalid value '%s', expected 'yes' "
4718                                     "or 'no'", $1);
4719                                 free($1);
4720                                 YYERROR;
4721                         }
4722                         free($1);
4723                 }
4724                 ;
4725
4726 unaryop         : '='           { $$ = PF_OP_EQ; }
4727                 | '!' '='       { $$ = PF_OP_NE; }
4728                 | '<' '='       { $$ = PF_OP_LE; }
4729                 | '<'           { $$ = PF_OP_LT; }
4730                 | '>' '='       { $$ = PF_OP_GE; }
4731                 | '>'           { $$ = PF_OP_GT; }
4732                 ;
4733
4734 %%
4735
4736 int
4737 yyerror(const char *fmt, ...)
4738 {
4739         va_list          ap;
4740
4741         file->errors++;
4742         va_start(ap, fmt);
4743         fprintf(stderr, "%s:%d: ", file->name, yylval.lineno);
4744         vfprintf(stderr, fmt, ap);
4745         fprintf(stderr, "\n");
4746         va_end(ap);
4747         return (0);
4748 }
4749
4750 int
4751 disallow_table(struct node_host *h, const char *fmt)
4752 {
4753         for (; h != NULL; h = h->next)
4754                 if (h->addr.type == PF_ADDR_TABLE) {
4755                         yyerror(fmt, h->addr.v.tblname);
4756                         return (1);
4757                 }
4758         return (0);
4759 }
4760
4761 int
4762 disallow_urpf_failed(struct node_host *h, const char *fmt)
4763 {
4764         for (; h != NULL; h = h->next)
4765                 if (h->addr.type == PF_ADDR_URPFFAILED) {
4766                         yyerror(fmt);
4767                         return (1);
4768                 }
4769         return (0);
4770 }
4771
4772 int
4773 disallow_alias(struct node_host *h, const char *fmt)
4774 {
4775         for (; h != NULL; h = h->next)
4776                 if (DYNIF_MULTIADDR(h->addr)) {
4777                         yyerror(fmt, h->addr.v.tblname);
4778                         return (1);
4779                 }
4780         return (0);
4781 }
4782
4783 int
4784 rule_consistent(struct pfctl_rule *r, int anchor_call)
4785 {
4786         int     problems = 0;
4787
4788         switch (r->action) {
4789         case PF_PASS:
4790         case PF_DROP:
4791         case PF_SCRUB:
4792         case PF_NOSCRUB:
4793                 problems = filter_consistent(r, anchor_call);
4794                 break;
4795         case PF_NAT:
4796         case PF_NONAT:
4797                 problems = nat_consistent(r);
4798                 break;
4799         case PF_RDR:
4800         case PF_NORDR:
4801                 problems = rdr_consistent(r);
4802                 break;
4803         case PF_BINAT:
4804         case PF_NOBINAT:
4805         default:
4806                 break;
4807         }
4808         return (problems);
4809 }
4810
4811 int
4812 filter_consistent(struct pfctl_rule *r, int anchor_call)
4813 {
4814         int     problems = 0;
4815
4816         if (r->proto != IPPROTO_TCP && r->proto != IPPROTO_UDP &&
4817             (r->src.port_op || r->dst.port_op)) {
4818                 yyerror("port only applies to tcp/udp");
4819                 problems++;
4820         }
4821         if (r->proto != IPPROTO_ICMP && r->proto != IPPROTO_ICMPV6 &&
4822             (r->type || r->code)) {
4823                 yyerror("icmp-type/code only applies to icmp");
4824                 problems++;
4825         }
4826         if (!r->af && (r->type || r->code)) {
4827                 yyerror("must indicate address family with icmp-type/code");
4828                 problems++;
4829         }
4830         if (r->overload_tblname[0] &&
4831             r->max_src_conn == 0 && r->max_src_conn_rate.seconds == 0) {
4832                 yyerror("'overload' requires 'max-src-conn' "
4833                     "or 'max-src-conn-rate'");
4834                 problems++;
4835         }
4836         if ((r->proto == IPPROTO_ICMP && r->af == AF_INET6) ||
4837             (r->proto == IPPROTO_ICMPV6 && r->af == AF_INET)) {
4838                 yyerror("proto %s doesn't match address family %s",
4839                     r->proto == IPPROTO_ICMP ? "icmp" : "icmp6",
4840                     r->af == AF_INET ? "inet" : "inet6");
4841                 problems++;
4842         }
4843         if (r->allow_opts && r->action != PF_PASS) {
4844                 yyerror("allow-opts can only be specified for pass rules");
4845                 problems++;
4846         }
4847         if (r->rule_flag & PFRULE_FRAGMENT && (r->src.port_op ||
4848             r->dst.port_op || r->flagset || r->type || r->code)) {
4849                 yyerror("fragments can be filtered only on IP header fields");
4850                 problems++;
4851         }
4852         if (r->rule_flag & PFRULE_RETURNRST && r->proto != IPPROTO_TCP) {
4853                 yyerror("return-rst can only be applied to TCP rules");
4854                 problems++;
4855         }
4856         if (r->max_src_nodes && !(r->rule_flag & PFRULE_RULESRCTRACK)) {
4857                 yyerror("max-src-nodes requires 'source-track rule'");
4858                 problems++;
4859         }
4860         if (r->action == PF_DROP && r->keep_state) {
4861                 yyerror("keep state on block rules doesn't make sense");
4862                 problems++;
4863         }
4864         if (r->rule_flag & PFRULE_STATESLOPPY &&
4865             (r->keep_state == PF_STATE_MODULATE ||
4866             r->keep_state == PF_STATE_SYNPROXY)) {
4867                 yyerror("sloppy state matching cannot be used with "
4868                     "synproxy state or modulate state");
4869                 problems++;
4870         }
4871         return (-problems);
4872 }
4873
4874 int
4875 nat_consistent(struct pfctl_rule *r)
4876 {
4877         return (0);     /* yeah! */
4878 }
4879
4880 int
4881 rdr_consistent(struct pfctl_rule *r)
4882 {
4883         int                      problems = 0;
4884
4885         if (r->proto != IPPROTO_TCP && r->proto != IPPROTO_UDP) {
4886                 if (r->src.port_op) {
4887                         yyerror("src port only applies to tcp/udp");
4888                         problems++;
4889                 }
4890                 if (r->dst.port_op) {
4891                         yyerror("dst port only applies to tcp/udp");
4892                         problems++;
4893                 }
4894                 if (r->rpool.proxy_port[0]) {
4895                         yyerror("rpool port only applies to tcp/udp");
4896                         problems++;
4897                 }
4898         }
4899         if (r->dst.port_op &&
4900             r->dst.port_op != PF_OP_EQ && r->dst.port_op != PF_OP_RRG) {
4901                 yyerror("invalid port operator for rdr destination port");
4902                 problems++;
4903         }
4904         return (-problems);
4905 }
4906
4907 int
4908 process_tabledef(char *name, struct table_opts *opts)
4909 {
4910         struct pfr_buffer        ab;
4911         struct node_tinit       *ti;
4912         unsigned long            maxcount;
4913         size_t                   s = sizeof(maxcount);
4914
4915         bzero(&ab, sizeof(ab));
4916         ab.pfrb_type = PFRB_ADDRS;
4917         SIMPLEQ_FOREACH(ti, &opts->init_nodes, entries) {
4918                 if (ti->file)
4919                         if (pfr_buf_load(&ab, ti->file, 0, append_addr)) {
4920                                 if (errno)
4921                                         yyerror("cannot load \"%s\": %s",
4922                                             ti->file, strerror(errno));
4923                                 else
4924                                         yyerror("file \"%s\" contains bad data",
4925                                             ti->file);
4926                                 goto _error;
4927                         }
4928                 if (ti->host)
4929                         if (append_addr_host(&ab, ti->host, 0, 0)) {
4930                                 yyerror("cannot create address buffer: %s",
4931                                     strerror(errno));
4932                                 goto _error;
4933                         }
4934         }
4935         if (pf->opts & PF_OPT_VERBOSE)
4936                 print_tabledef(name, opts->flags, opts->init_addr,
4937                     &opts->init_nodes);
4938         if (!(pf->opts & PF_OPT_NOACTION) &&
4939             pfctl_define_table(name, opts->flags, opts->init_addr,
4940             pf->anchor->name, &ab, pf->anchor->ruleset.tticket)) {
4941
4942                 if (sysctlbyname("net.pf.request_maxcount", &maxcount, &s,
4943                     NULL, 0) == -1)
4944                         maxcount = 65535;
4945
4946                 if (ab.pfrb_size > maxcount)
4947                         yyerror("cannot define table %s: too many elements.\n"
4948                             "Consider increasing net.pf.request_maxcount.",
4949                             name);
4950                 else
4951                         yyerror("cannot define table %s: %s", name,
4952                             pfr_strerror(errno));
4953
4954                 goto _error;
4955         }
4956         pf->tdirty = 1;
4957         pfr_buf_clear(&ab);
4958         return (0);
4959 _error:
4960         pfr_buf_clear(&ab);
4961         return (-1);
4962 }
4963
4964 struct keywords {
4965         const char      *k_name;
4966         int              k_val;
4967 };
4968
4969 /* macro gore, but you should've seen the prior indentation nightmare... */
4970
4971 #define FREE_LIST(T,r) \
4972         do { \
4973                 T *p, *node = r; \
4974                 while (node != NULL) { \
4975                         p = node; \
4976                         node = node->next; \
4977                         free(p); \
4978                 } \
4979         } while (0)
4980
4981 #define LOOP_THROUGH(T,n,r,C) \
4982         do { \
4983                 T *n; \
4984                 if (r == NULL) { \
4985                         r = calloc(1, sizeof(T)); \
4986                         if (r == NULL) \
4987                                 err(1, "LOOP: calloc"); \
4988                         r->next = NULL; \
4989                 } \
4990                 n = r; \
4991                 while (n != NULL) { \
4992                         do { \
4993                                 C; \
4994                         } while (0); \
4995                         n = n->next; \
4996                 } \
4997         } while (0)
4998
4999 void
5000 expand_label_str(char *label, size_t len, const char *srch, const char *repl)
5001 {
5002         char *tmp;
5003         char *p, *q;
5004
5005         if ((tmp = calloc(1, len)) == NULL)
5006                 err(1, "expand_label_str: calloc");
5007         p = q = label;
5008         while ((q = strstr(p, srch)) != NULL) {
5009                 *q = '\0';
5010                 if ((strlcat(tmp, p, len) >= len) ||
5011                     (strlcat(tmp, repl, len) >= len))
5012                         errx(1, "expand_label: label too long");
5013                 q += strlen(srch);
5014                 p = q;
5015         }
5016         if (strlcat(tmp, p, len) >= len)
5017                 errx(1, "expand_label: label too long");
5018         strlcpy(label, tmp, len);       /* always fits */
5019         free(tmp);
5020 }
5021
5022 void
5023 expand_label_if(const char *name, char *label, size_t len, const char *ifname)
5024 {
5025         if (strstr(label, name) != NULL) {
5026                 if (!*ifname)
5027                         expand_label_str(label, len, name, "any");
5028                 else
5029                         expand_label_str(label, len, name, ifname);
5030         }
5031 }
5032
5033 void
5034 expand_label_addr(const char *name, char *label, size_t len, sa_family_t af,
5035     struct pf_rule_addr *addr)
5036 {
5037         char tmp[64], tmp_not[66];
5038
5039         if (strstr(label, name) != NULL) {
5040                 switch (addr->addr.type) {
5041                 case PF_ADDR_DYNIFTL:
5042                         snprintf(tmp, sizeof(tmp), "(%s)", addr->addr.v.ifname);
5043                         break;
5044                 case PF_ADDR_TABLE:
5045                         snprintf(tmp, sizeof(tmp), "<%s>", addr->addr.v.tblname);
5046                         break;
5047                 case PF_ADDR_NOROUTE:
5048                         snprintf(tmp, sizeof(tmp), "no-route");
5049                         break;
5050                 case PF_ADDR_URPFFAILED:
5051                         snprintf(tmp, sizeof(tmp), "urpf-failed");
5052                         break;
5053                 case PF_ADDR_ADDRMASK:
5054                         if (!af || (PF_AZERO(&addr->addr.v.a.addr, af) &&
5055                             PF_AZERO(&addr->addr.v.a.mask, af)))
5056                                 snprintf(tmp, sizeof(tmp), "any");
5057                         else {
5058                                 char    a[48];
5059                                 int     bits;
5060
5061                                 if (inet_ntop(af, &addr->addr.v.a.addr, a,
5062                                     sizeof(a)) == NULL)
5063                                         snprintf(tmp, sizeof(tmp), "?");
5064                                 else {
5065                                         bits = unmask(&addr->addr.v.a.mask, af);
5066                                         if ((af == AF_INET && bits < 32) ||
5067                                             (af == AF_INET6 && bits < 128))
5068                                                 snprintf(tmp, sizeof(tmp),
5069                                                     "%s/%d", a, bits);
5070                                         else
5071                                                 snprintf(tmp, sizeof(tmp),
5072                                                     "%s", a);
5073                                 }
5074                         }
5075                         break;
5076                 default:
5077                         snprintf(tmp, sizeof(tmp), "?");
5078                         break;
5079                 }
5080
5081                 if (addr->neg) {
5082                         snprintf(tmp_not, sizeof(tmp_not), "! %s", tmp);
5083                         expand_label_str(label, len, name, tmp_not);
5084                 } else
5085                         expand_label_str(label, len, name, tmp);
5086         }
5087 }
5088
5089 void
5090 expand_label_port(const char *name, char *label, size_t len,
5091     struct pf_rule_addr *addr)
5092 {
5093         char     a1[6], a2[6], op[13] = "";
5094
5095         if (strstr(label, name) != NULL) {
5096                 snprintf(a1, sizeof(a1), "%u", ntohs(addr->port[0]));
5097                 snprintf(a2, sizeof(a2), "%u", ntohs(addr->port[1]));
5098                 if (!addr->port_op)
5099                         ;
5100                 else if (addr->port_op == PF_OP_IRG)
5101                         snprintf(op, sizeof(op), "%s><%s", a1, a2);
5102                 else if (addr->port_op == PF_OP_XRG)
5103                         snprintf(op, sizeof(op), "%s<>%s", a1, a2);
5104                 else if (addr->port_op == PF_OP_EQ)
5105                         snprintf(op, sizeof(op), "%s", a1);
5106                 else if (addr->port_op == PF_OP_NE)
5107                         snprintf(op, sizeof(op), "!=%s", a1);
5108                 else if (addr->port_op == PF_OP_LT)
5109                         snprintf(op, sizeof(op), "<%s", a1);
5110                 else if (addr->port_op == PF_OP_LE)
5111                         snprintf(op, sizeof(op), "<=%s", a1);
5112                 else if (addr->port_op == PF_OP_GT)
5113                         snprintf(op, sizeof(op), ">%s", a1);
5114                 else if (addr->port_op == PF_OP_GE)
5115                         snprintf(op, sizeof(op), ">=%s", a1);
5116                 expand_label_str(label, len, name, op);
5117         }
5118 }
5119
5120 void
5121 expand_label_proto(const char *name, char *label, size_t len, u_int8_t proto)
5122 {
5123         const char *protoname;
5124         char n[4];
5125
5126         if (strstr(label, name) != NULL) {
5127                 protoname = pfctl_proto2name(proto);
5128                 if (protoname != NULL)
5129                         expand_label_str(label, len, name, protoname);
5130                 else {
5131                         snprintf(n, sizeof(n), "%u", proto);
5132                         expand_label_str(label, len, name, n);
5133                 }
5134         }
5135 }
5136
5137 void
5138 expand_label_nr(const char *name, char *label, size_t len,
5139     struct pfctl_rule *r)
5140 {
5141         char n[11];
5142
5143         if (strstr(label, name) != NULL) {
5144                 snprintf(n, sizeof(n), "%u", r->nr);
5145                 expand_label_str(label, len, name, n);
5146         }
5147 }
5148
5149 void
5150 expand_label(char *label, size_t len, struct pfctl_rule *r)
5151 {
5152         expand_label_if("$if", label, len, r->ifname);
5153         expand_label_addr("$srcaddr", label, len, r->af, &r->src);
5154         expand_label_addr("$dstaddr", label, len, r->af, &r->dst);
5155         expand_label_port("$srcport", label, len, &r->src);
5156         expand_label_port("$dstport", label, len, &r->dst);
5157         expand_label_proto("$proto", label, len, r->proto);
5158         expand_label_nr("$nr", label, len, r);
5159 }
5160
5161 int
5162 expand_altq(struct pf_altq *a, struct node_if *interfaces,
5163     struct node_queue *nqueues, struct node_queue_bw bwspec,
5164     struct node_queue_opt *opts)
5165 {
5166         struct pf_altq           pa, pb;
5167         char                     qname[PF_QNAME_SIZE];
5168         struct node_queue       *n;
5169         struct node_queue_bw     bw;
5170         int                      errs = 0;
5171
5172         if ((pf->loadopt & PFCTL_FLAG_ALTQ) == 0) {
5173                 FREE_LIST(struct node_if, interfaces);
5174                 if (nqueues)
5175                         FREE_LIST(struct node_queue, nqueues);
5176                 return (0);
5177         }
5178
5179         LOOP_THROUGH(struct node_if, interface, interfaces,
5180                 memcpy(&pa, a, sizeof(struct pf_altq));
5181                 if (strlcpy(pa.ifname, interface->ifname,
5182                     sizeof(pa.ifname)) >= sizeof(pa.ifname))
5183                         errx(1, "expand_altq: strlcpy");
5184
5185                 if (interface->not) {
5186                         yyerror("altq on ! <interface> is not supported");
5187                         errs++;
5188                 } else {
5189                         if (eval_pfaltq(pf, &pa, &bwspec, opts))
5190                                 errs++;
5191                         else
5192                                 if (pfctl_add_altq(pf, &pa))
5193                                         errs++;
5194
5195                         if (pf->opts & PF_OPT_VERBOSE) {
5196                                 print_altq(&pf->paltq->altq, 0,
5197                                     &bwspec, opts);
5198                                 if (nqueues && nqueues->tail) {
5199                                         printf("queue { ");
5200                                         LOOP_THROUGH(struct node_queue, queue,
5201                                             nqueues,
5202                                                 printf("%s ",
5203                                                     queue->queue);
5204                                         );
5205                                         printf("}");
5206                                 }
5207                                 printf("\n");
5208                         }
5209
5210                         if (pa.scheduler == ALTQT_CBQ ||
5211                             pa.scheduler == ALTQT_HFSC ||
5212                             pa.scheduler == ALTQT_FAIRQ) {
5213                                 /* now create a root queue */
5214                                 memset(&pb, 0, sizeof(struct pf_altq));
5215                                 if (strlcpy(qname, "root_", sizeof(qname)) >=
5216                                     sizeof(qname))
5217                                         errx(1, "expand_altq: strlcpy");
5218                                 if (strlcat(qname, interface->ifname,
5219                                     sizeof(qname)) >= sizeof(qname))
5220                                         errx(1, "expand_altq: strlcat");
5221                                 if (strlcpy(pb.qname, qname,
5222                                     sizeof(pb.qname)) >= sizeof(pb.qname))
5223                                         errx(1, "expand_altq: strlcpy");
5224                                 if (strlcpy(pb.ifname, interface->ifname,
5225                                     sizeof(pb.ifname)) >= sizeof(pb.ifname))
5226                                         errx(1, "expand_altq: strlcpy");
5227                                 pb.qlimit = pa.qlimit;
5228                                 pb.scheduler = pa.scheduler;
5229                                 bw.bw_absolute = pa.ifbandwidth;
5230                                 bw.bw_percent = 0;
5231                                 if (eval_pfqueue(pf, &pb, &bw, opts))
5232                                         errs++;
5233                                 else
5234                                         if (pfctl_add_altq(pf, &pb))
5235                                                 errs++;
5236                         }
5237
5238                         LOOP_THROUGH(struct node_queue, queue, nqueues,
5239                                 n = calloc(1, sizeof(struct node_queue));
5240                                 if (n == NULL)
5241                                         err(1, "expand_altq: calloc");
5242                                 if (pa.scheduler == ALTQT_CBQ ||
5243                                     pa.scheduler == ALTQT_HFSC ||
5244                                     pa.scheduler == ALTQT_FAIRQ)
5245                                         if (strlcpy(n->parent, qname,
5246                                             sizeof(n->parent)) >=
5247                                             sizeof(n->parent))
5248                                                 errx(1, "expand_altq: strlcpy");
5249                                 if (strlcpy(n->queue, queue->queue,
5250                                     sizeof(n->queue)) >= sizeof(n->queue))
5251                                         errx(1, "expand_altq: strlcpy");
5252                                 if (strlcpy(n->ifname, interface->ifname,
5253                                     sizeof(n->ifname)) >= sizeof(n->ifname))
5254                                         errx(1, "expand_altq: strlcpy");
5255                                 n->scheduler = pa.scheduler;
5256                                 n->next = NULL;
5257                                 n->tail = n;
5258                                 if (queues == NULL)
5259                                         queues = n;
5260                                 else {
5261                                         queues->tail->next = n;
5262                                         queues->tail = n;
5263                                 }
5264                         );
5265                 }
5266         );
5267         FREE_LIST(struct node_if, interfaces);
5268         if (nqueues)
5269                 FREE_LIST(struct node_queue, nqueues);
5270
5271         return (errs);
5272 }
5273
5274 int
5275 expand_queue(struct pf_altq *a, struct node_if *interfaces,
5276     struct node_queue *nqueues, struct node_queue_bw bwspec,
5277     struct node_queue_opt *opts)
5278 {
5279         struct node_queue       *n, *nq;
5280         struct pf_altq           pa;
5281         u_int8_t                 found = 0;
5282         u_int8_t                 errs = 0;
5283
5284         if ((pf->loadopt & PFCTL_FLAG_ALTQ) == 0) {
5285                 FREE_LIST(struct node_queue, nqueues);
5286                 return (0);
5287         }
5288
5289         if (queues == NULL) {
5290                 yyerror("queue %s has no parent", a->qname);
5291                 FREE_LIST(struct node_queue, nqueues);
5292                 return (1);
5293         }
5294
5295         LOOP_THROUGH(struct node_if, interface, interfaces,
5296                 LOOP_THROUGH(struct node_queue, tqueue, queues,
5297                         if (!strncmp(a->qname, tqueue->queue, PF_QNAME_SIZE) &&
5298                             (interface->ifname[0] == 0 ||
5299                             (!interface->not && !strncmp(interface->ifname,
5300                             tqueue->ifname, IFNAMSIZ)) ||
5301                             (interface->not && strncmp(interface->ifname,
5302                             tqueue->ifname, IFNAMSIZ)))) {
5303                                 /* found ourself in queues */
5304                                 found++;
5305
5306                                 memcpy(&pa, a, sizeof(struct pf_altq));
5307
5308                                 if (pa.scheduler != ALTQT_NONE &&
5309                                     pa.scheduler != tqueue->scheduler) {
5310                                         yyerror("exactly one scheduler type "
5311                                             "per interface allowed");
5312                                         return (1);
5313                                 }
5314                                 pa.scheduler = tqueue->scheduler;
5315
5316                                 /* scheduler dependent error checking */
5317                                 switch (pa.scheduler) {
5318                                 case ALTQT_PRIQ:
5319                                         if (nqueues != NULL) {
5320                                                 yyerror("priq queues cannot "
5321                                                     "have child queues");
5322                                                 return (1);
5323                                         }
5324                                         if (bwspec.bw_absolute > 0 ||
5325                                             bwspec.bw_percent < 100) {
5326                                                 yyerror("priq doesn't take "
5327                                                     "bandwidth");
5328                                                 return (1);
5329                                         }
5330                                         break;
5331                                 default:
5332                                         break;
5333                                 }
5334
5335                                 if (strlcpy(pa.ifname, tqueue->ifname,
5336                                     sizeof(pa.ifname)) >= sizeof(pa.ifname))
5337                                         errx(1, "expand_queue: strlcpy");
5338                                 if (strlcpy(pa.parent, tqueue->parent,
5339                                     sizeof(pa.parent)) >= sizeof(pa.parent))
5340                                         errx(1, "expand_queue: strlcpy");
5341
5342                                 if (eval_pfqueue(pf, &pa, &bwspec, opts))
5343                                         errs++;
5344                                 else
5345                                         if (pfctl_add_altq(pf, &pa))
5346                                                 errs++;
5347
5348                                 for (nq = nqueues; nq != NULL; nq = nq->next) {
5349                                         if (!strcmp(a->qname, nq->queue)) {
5350                                                 yyerror("queue cannot have "
5351                                                     "itself as child");
5352                                                 errs++;
5353                                                 continue;
5354                                         }
5355                                         n = calloc(1,
5356                                             sizeof(struct node_queue));
5357                                         if (n == NULL)
5358                                                 err(1, "expand_queue: calloc");
5359                                         if (strlcpy(n->parent, a->qname,
5360                                             sizeof(n->parent)) >=
5361                                             sizeof(n->parent))
5362                                                 errx(1, "expand_queue strlcpy");
5363                                         if (strlcpy(n->queue, nq->queue,
5364                                             sizeof(n->queue)) >=
5365                                             sizeof(n->queue))
5366                                                 errx(1, "expand_queue strlcpy");
5367                                         if (strlcpy(n->ifname, tqueue->ifname,
5368                                             sizeof(n->ifname)) >=
5369                                             sizeof(n->ifname))
5370                                                 errx(1, "expand_queue strlcpy");
5371                                         n->scheduler = tqueue->scheduler;
5372                                         n->next = NULL;
5373                                         n->tail = n;
5374                                         if (queues == NULL)
5375                                                 queues = n;
5376                                         else {
5377                                                 queues->tail->next = n;
5378                                                 queues->tail = n;
5379                                         }
5380                                 }
5381                                 if ((pf->opts & PF_OPT_VERBOSE) && (
5382                                     (found == 1 && interface->ifname[0] == 0) ||
5383                                     (found > 0 && interface->ifname[0] != 0))) {
5384                                         print_queue(&pf->paltq->altq, 0,
5385                                             &bwspec, interface->ifname[0] != 0,
5386                                             opts);
5387                                         if (nqueues && nqueues->tail) {
5388                                                 printf("{ ");
5389                                                 LOOP_THROUGH(struct node_queue,
5390                                                     queue, nqueues,
5391                                                         printf("%s ",
5392                                                             queue->queue);
5393                                                 );
5394                                                 printf("}");
5395                                         }
5396                                         printf("\n");
5397                                 }
5398                         }
5399                 );
5400         );
5401
5402         FREE_LIST(struct node_queue, nqueues);
5403         FREE_LIST(struct node_if, interfaces);
5404
5405         if (!found) {
5406                 yyerror("queue %s has no parent", a->qname);
5407                 errs++;
5408         }
5409
5410         if (errs)
5411                 return (1);
5412         else
5413                 return (0);
5414 }
5415
5416 void
5417 expand_rule(struct pfctl_rule *r,
5418     struct node_if *interfaces, struct node_host *rpool_hosts,
5419     struct node_proto *protos, struct node_os *src_oses,
5420     struct node_host *src_hosts, struct node_port *src_ports,
5421     struct node_host *dst_hosts, struct node_port *dst_ports,
5422     struct node_uid *uids, struct node_gid *gids, struct node_icmp *icmp_types,
5423     const char *anchor_call)
5424 {
5425         sa_family_t              af = r->af;
5426         int                      added = 0, error = 0;
5427         char                     ifname[IF_NAMESIZE];
5428         char                     label[PF_RULE_MAX_LABEL_COUNT][PF_RULE_LABEL_SIZE];
5429         char                     tagname[PF_TAG_NAME_SIZE];
5430         char                     match_tagname[PF_TAG_NAME_SIZE];
5431         struct pf_pooladdr      *pa;
5432         struct node_host        *h;
5433         u_int8_t                 flags, flagset, keep_state;
5434
5435         memcpy(label, r->label, sizeof(r->label));
5436         assert(sizeof(r->label) == sizeof(label));
5437         if (strlcpy(tagname, r->tagname, sizeof(tagname)) >= sizeof(tagname))
5438                 errx(1, "expand_rule: strlcpy");
5439         if (strlcpy(match_tagname, r->match_tagname, sizeof(match_tagname)) >=
5440             sizeof(match_tagname))
5441                 errx(1, "expand_rule: strlcpy");
5442         flags = r->flags;
5443         flagset = r->flagset;
5444         keep_state = r->keep_state;
5445
5446         LOOP_THROUGH(struct node_if, interface, interfaces,
5447         LOOP_THROUGH(struct node_proto, proto, protos,
5448         LOOP_THROUGH(struct node_icmp, icmp_type, icmp_types,
5449         LOOP_THROUGH(struct node_host, src_host, src_hosts,
5450         LOOP_THROUGH(struct node_port, src_port, src_ports,
5451         LOOP_THROUGH(struct node_os, src_os, src_oses,
5452         LOOP_THROUGH(struct node_host, dst_host, dst_hosts,
5453         LOOP_THROUGH(struct node_port, dst_port, dst_ports,
5454         LOOP_THROUGH(struct node_uid, uid, uids,
5455         LOOP_THROUGH(struct node_gid, gid, gids,
5456
5457                 r->af = af;
5458                 /* for link-local IPv6 address, interface must match up */
5459                 if ((r->af && src_host->af && r->af != src_host->af) ||
5460                     (r->af && dst_host->af && r->af != dst_host->af) ||
5461                     (src_host->af && dst_host->af &&
5462                     src_host->af != dst_host->af) ||
5463                     (src_host->ifindex && dst_host->ifindex &&
5464                     src_host->ifindex != dst_host->ifindex) ||
5465                     (src_host->ifindex && *interface->ifname &&
5466                     src_host->ifindex != if_nametoindex(interface->ifname)) ||
5467                     (dst_host->ifindex && *interface->ifname &&
5468                     dst_host->ifindex != if_nametoindex(interface->ifname)))
5469                         continue;
5470                 if (!r->af && src_host->af)
5471                         r->af = src_host->af;
5472                 else if (!r->af && dst_host->af)
5473                         r->af = dst_host->af;
5474
5475                 if (*interface->ifname)
5476                         strlcpy(r->ifname, interface->ifname,
5477                             sizeof(r->ifname));
5478                 else if (if_indextoname(src_host->ifindex, ifname))
5479                         strlcpy(r->ifname, ifname, sizeof(r->ifname));
5480                 else if (if_indextoname(dst_host->ifindex, ifname))
5481                         strlcpy(r->ifname, ifname, sizeof(r->ifname));
5482                 else
5483                         memset(r->ifname, '\0', sizeof(r->ifname));
5484
5485                 memcpy(r->label, label, sizeof(r->label));
5486                 if (strlcpy(r->tagname, tagname, sizeof(r->tagname)) >=
5487                     sizeof(r->tagname))
5488                         errx(1, "expand_rule: strlcpy");
5489                 if (strlcpy(r->match_tagname, match_tagname,
5490                     sizeof(r->match_tagname)) >= sizeof(r->match_tagname))
5491                         errx(1, "expand_rule: strlcpy");
5492
5493                 error += check_netmask(src_host, r->af);
5494                 error += check_netmask(dst_host, r->af);
5495
5496                 r->ifnot = interface->not;
5497                 r->proto = proto->proto;
5498                 r->src.addr = src_host->addr;
5499                 r->src.neg = src_host->not;
5500                 r->src.port[0] = src_port->port[0];
5501                 r->src.port[1] = src_port->port[1];
5502                 r->src.port_op = src_port->op;
5503                 r->dst.addr = dst_host->addr;
5504                 r->dst.neg = dst_host->not;
5505                 r->dst.port[0] = dst_port->port[0];
5506                 r->dst.port[1] = dst_port->port[1];
5507                 r->dst.port_op = dst_port->op;
5508                 r->uid.op = uid->op;
5509                 r->uid.uid[0] = uid->uid[0];
5510                 r->uid.uid[1] = uid->uid[1];
5511                 r->gid.op = gid->op;
5512                 r->gid.gid[0] = gid->gid[0];
5513                 r->gid.gid[1] = gid->gid[1];
5514                 r->type = icmp_type->type;
5515                 r->code = icmp_type->code;
5516
5517                 if ((keep_state == PF_STATE_MODULATE ||
5518                     keep_state == PF_STATE_SYNPROXY) &&
5519                     r->proto && r->proto != IPPROTO_TCP)
5520                         r->keep_state = PF_STATE_NORMAL;
5521                 else
5522                         r->keep_state = keep_state;
5523
5524                 if (r->proto && r->proto != IPPROTO_TCP) {
5525                         r->flags = 0;
5526                         r->flagset = 0;
5527                 } else {
5528                         r->flags = flags;
5529                         r->flagset = flagset;
5530                 }
5531                 if (icmp_type->proto && r->proto != icmp_type->proto) {
5532                         yyerror("icmp-type mismatch");
5533                         error++;
5534                 }
5535
5536                 if (src_os && src_os->os) {
5537                         r->os_fingerprint = pfctl_get_fingerprint(src_os->os);
5538                         if ((pf->opts & PF_OPT_VERBOSE2) &&
5539                             r->os_fingerprint == PF_OSFP_NOMATCH)
5540                                 fprintf(stderr,
5541                                     "warning: unknown '%s' OS fingerprint\n",
5542                                     src_os->os);
5543                 } else {
5544                         r->os_fingerprint = PF_OSFP_ANY;
5545                 }
5546
5547                 TAILQ_INIT(&r->rpool.list);
5548                 for (h = rpool_hosts; h != NULL; h = h->next) {
5549                         pa = calloc(1, sizeof(struct pf_pooladdr));
5550                         if (pa == NULL)
5551                                 err(1, "expand_rule: calloc");
5552                         pa->addr = h->addr;
5553                         if (h->ifname != NULL) {
5554                                 if (strlcpy(pa->ifname, h->ifname,
5555                                     sizeof(pa->ifname)) >=
5556                                     sizeof(pa->ifname))
5557                                         errx(1, "expand_rule: strlcpy");
5558                         } else
5559                                 pa->ifname[0] = 0;
5560                         TAILQ_INSERT_TAIL(&r->rpool.list, pa, entries);
5561                 }
5562
5563                 if (rule_consistent(r, anchor_call[0]) < 0 || error)
5564                         yyerror("skipping rule due to errors");
5565                 else {
5566                         r->nr = pf->astack[pf->asd]->match++;
5567                         pfctl_append_rule(pf, r, anchor_call);
5568                         added++;
5569                 }
5570
5571         ))))))))));
5572
5573         FREE_LIST(struct node_if, interfaces);
5574         FREE_LIST(struct node_proto, protos);
5575         FREE_LIST(struct node_host, src_hosts);
5576         FREE_LIST(struct node_port, src_ports);
5577         FREE_LIST(struct node_os, src_oses);
5578         FREE_LIST(struct node_host, dst_hosts);
5579         FREE_LIST(struct node_port, dst_ports);
5580         FREE_LIST(struct node_uid, uids);
5581         FREE_LIST(struct node_gid, gids);
5582         FREE_LIST(struct node_icmp, icmp_types);
5583         FREE_LIST(struct node_host, rpool_hosts);
5584
5585         if (!added)
5586                 yyerror("rule expands to no valid combination");
5587 }
5588
5589 int
5590 expand_skip_interface(struct node_if *interfaces)
5591 {
5592         int     errs = 0;
5593
5594         if (!interfaces || (!interfaces->next && !interfaces->not &&
5595             !strcmp(interfaces->ifname, "none"))) {
5596                 if (pf->opts & PF_OPT_VERBOSE)
5597                         printf("set skip on none\n");
5598                 errs = pfctl_set_interface_flags(pf, "", PFI_IFLAG_SKIP, 0);
5599                 return (errs);
5600         }
5601
5602         if (pf->opts & PF_OPT_VERBOSE)
5603                 printf("set skip on {");
5604         LOOP_THROUGH(struct node_if, interface, interfaces,
5605                 if (pf->opts & PF_OPT_VERBOSE)
5606                         printf(" %s", interface->ifname);
5607                 if (interface->not) {
5608                         yyerror("skip on ! <interface> is not supported");
5609                         errs++;
5610                 } else
5611                         errs += pfctl_set_interface_flags(pf,
5612                             interface->ifname, PFI_IFLAG_SKIP, 1);
5613         );
5614         if (pf->opts & PF_OPT_VERBOSE)
5615                 printf(" }\n");
5616
5617         FREE_LIST(struct node_if, interfaces);
5618
5619         if (errs)
5620                 return (1);
5621         else
5622                 return (0);
5623 }
5624
5625 #undef FREE_LIST
5626 #undef LOOP_THROUGH
5627
5628 int
5629 check_rulestate(int desired_state)
5630 {
5631         if (require_order && (rulestate > desired_state)) {
5632                 yyerror("Rules must be in order: options, normalization, "
5633                     "queueing, translation, filtering");
5634                 return (1);
5635         }
5636         rulestate = desired_state;
5637         return (0);
5638 }
5639
5640 int
5641 kw_cmp(const void *k, const void *e)
5642 {
5643         return (strcmp(k, ((const struct keywords *)e)->k_name));
5644 }
5645
5646 int
5647 lookup(char *s)
5648 {
5649         /* this has to be sorted always */
5650         static const struct keywords keywords[] = {
5651                 { "all",                ALL},
5652                 { "allow-opts",         ALLOWOPTS},
5653                 { "altq",               ALTQ},
5654                 { "anchor",             ANCHOR},
5655                 { "antispoof",          ANTISPOOF},
5656                 { "any",                ANY},
5657                 { "bandwidth",          BANDWIDTH},
5658                 { "binat",              BINAT},
5659                 { "binat-anchor",       BINATANCHOR},
5660                 { "bitmask",            BITMASK},
5661                 { "block",              BLOCK},
5662                 { "block-policy",       BLOCKPOLICY},
5663                 { "buckets",            BUCKETS},
5664                 { "cbq",                CBQ},
5665                 { "code",               CODE},
5666                 { "codelq",             CODEL},
5667                 { "crop",               FRAGCROP},
5668                 { "debug",              DEBUG},
5669                 { "divert-reply",       DIVERTREPLY},
5670                 { "divert-to",          DIVERTTO},
5671                 { "dnpipe",             DNPIPE},
5672                 { "dnqueue",            DNQUEUE},
5673                 { "drop",               DROP},
5674                 { "drop-ovl",           FRAGDROP},
5675                 { "dup-to",             DUPTO},
5676                 { "fail-policy",        FAILPOLICY},
5677                 { "fairq",              FAIRQ},
5678                 { "fastroute",          FASTROUTE},
5679                 { "file",               FILENAME},
5680                 { "fingerprints",       FINGERPRINTS},
5681                 { "flags",              FLAGS},
5682                 { "floating",           FLOATING},
5683                 { "flush",              FLUSH},
5684                 { "for",                FOR},
5685                 { "fragment",           FRAGMENT},
5686                 { "from",               FROM},
5687                 { "global",             GLOBAL},
5688                 { "group",              GROUP},
5689                 { "hfsc",               HFSC},
5690                 { "hogs",               HOGS},
5691                 { "hostid",             HOSTID},
5692                 { "icmp-type",          ICMPTYPE},
5693                 { "icmp6-type",         ICMP6TYPE},
5694                 { "if-bound",           IFBOUND},
5695                 { "in",                 IN},
5696                 { "include",            INCLUDE},
5697                 { "inet",               INET},
5698                 { "inet6",              INET6},
5699                 { "interval",           INTERVAL},
5700                 { "keep",               KEEP},
5701                 { "keepcounters",       KEEPCOUNTERS},
5702                 { "label",              LABEL},
5703                 { "limit",              LIMIT},
5704                 { "linkshare",          LINKSHARE},
5705                 { "load",               LOAD},
5706                 { "log",                LOG},
5707                 { "loginterface",       LOGINTERFACE},
5708                 { "map-e-portset",      MAPEPORTSET},
5709                 { "match",              MATCH},
5710                 { "max",                MAXIMUM},
5711                 { "max-mss",            MAXMSS},
5712                 { "max-src-conn",       MAXSRCCONN},
5713                 { "max-src-conn-rate",  MAXSRCCONNRATE},
5714                 { "max-src-nodes",      MAXSRCNODES},
5715                 { "max-src-states",     MAXSRCSTATES},
5716                 { "min-ttl",            MINTTL},
5717                 { "modulate",           MODULATE},
5718                 { "nat",                NAT},
5719                 { "nat-anchor",         NATANCHOR},
5720                 { "no",                 NO},
5721                 { "no-df",              NODF},
5722                 { "no-route",           NOROUTE},
5723                 { "no-sync",            NOSYNC},
5724                 { "on",                 ON},
5725                 { "optimization",       OPTIMIZATION},
5726                 { "os",                 OS},
5727                 { "out",                OUT},
5728                 { "overload",           OVERLOAD},
5729                 { "pass",               PASS},
5730                 { "port",               PORT},
5731                 { "prio",               PRIO},
5732                 { "priority",           PRIORITY},
5733                 { "priq",               PRIQ},
5734                 { "probability",        PROBABILITY},
5735                 { "proto",              PROTO},
5736                 { "qlimit",             QLIMIT},
5737                 { "queue",              QUEUE},
5738                 { "quick",              QUICK},
5739                 { "random",             RANDOM},
5740                 { "random-id",          RANDOMID},
5741                 { "rdr",                RDR},
5742                 { "rdr-anchor",         RDRANCHOR},
5743                 { "realtime",           REALTIME},
5744                 { "reassemble",         REASSEMBLE},
5745                 { "reply-to",           REPLYTO},
5746                 { "require-order",      REQUIREORDER},
5747                 { "return",             RETURN},
5748                 { "return-icmp",        RETURNICMP},
5749                 { "return-icmp6",       RETURNICMP6},
5750                 { "return-rst",         RETURNRST},
5751                 { "ridentifier",        RIDENTIFIER},
5752                 { "round-robin",        ROUNDROBIN},
5753                 { "route",              ROUTE},
5754                 { "route-to",           ROUTETO},
5755                 { "rtable",             RTABLE},
5756                 { "rule",               RULE},
5757                 { "ruleset-optimization",       RULESET_OPTIMIZATION},
5758                 { "scrub",              SCRUB},
5759                 { "set",                SET},
5760                 { "set-tos",            SETTOS},
5761                 { "skip",               SKIP},
5762                 { "sloppy",             SLOPPY},
5763                 { "source-hash",        SOURCEHASH},
5764                 { "source-track",       SOURCETRACK},
5765                 { "state",              STATE},
5766                 { "state-defaults",     STATEDEFAULTS},
5767                 { "state-policy",       STATEPOLICY},
5768                 { "static-port",        STATICPORT},
5769                 { "sticky-address",     STICKYADDRESS},
5770                 { "syncookies",         SYNCOOKIES},
5771                 { "synproxy",           SYNPROXY},
5772                 { "table",              TABLE},
5773                 { "tag",                TAG},
5774                 { "tagged",             TAGGED},
5775                 { "target",             TARGET},
5776                 { "tbrsize",            TBRSIZE},
5777                 { "timeout",            TIMEOUT},
5778                 { "to",                 TO},
5779                 { "tos",                TOS},
5780                 { "ttl",                TTL},
5781                 { "upperlimit",         UPPERLIMIT},
5782                 { "urpf-failed",        URPFFAILED},
5783                 { "user",               USER},
5784         };
5785         const struct keywords   *p;
5786
5787         p = bsearch(s, keywords, sizeof(keywords)/sizeof(keywords[0]),
5788             sizeof(keywords[0]), kw_cmp);
5789
5790         if (p) {
5791                 if (debug > 1)
5792                         fprintf(stderr, "%s: %d\n", s, p->k_val);
5793                 return (p->k_val);
5794         } else {
5795                 if (debug > 1)
5796                         fprintf(stderr, "string: %s\n", s);
5797                 return (STRING);
5798         }
5799 }
5800
5801 #define MAXPUSHBACK     128
5802
5803 static char     *parsebuf;
5804 static int       parseindex;
5805 static char      pushback_buffer[MAXPUSHBACK];
5806 static int       pushback_index = 0;
5807
5808 int
5809 lgetc(int quotec)
5810 {
5811         int             c, next;
5812
5813         if (parsebuf) {
5814                 /* Read character from the parsebuffer instead of input. */
5815                 if (parseindex >= 0) {
5816                         c = parsebuf[parseindex++];
5817                         if (c != '\0')
5818                                 return (c);
5819                         parsebuf = NULL;
5820                 } else
5821                         parseindex++;
5822         }
5823
5824         if (pushback_index)
5825                 return (pushback_buffer[--pushback_index]);
5826
5827         if (quotec) {
5828                 if ((c = getc(file->stream)) == EOF) {
5829                         yyerror("reached end of file while parsing quoted string");
5830                         if (popfile() == EOF)
5831                                 return (EOF);
5832                         return (quotec);
5833                 }
5834                 return (c);
5835         }
5836
5837         while ((c = getc(file->stream)) == '\\') {
5838                 next = getc(file->stream);
5839                 if (next != '\n') {
5840                         c = next;
5841                         break;
5842                 }
5843                 yylval.lineno = file->lineno;
5844                 file->lineno++;
5845         }
5846
5847         while (c == EOF) {
5848                 if (popfile() == EOF)
5849                         return (EOF);
5850                 c = getc(file->stream);
5851         }
5852         return (c);
5853 }
5854
5855 int
5856 lungetc(int c)
5857 {
5858         if (c == EOF)
5859                 return (EOF);
5860         if (parsebuf) {
5861                 parseindex--;
5862                 if (parseindex >= 0)
5863                         return (c);
5864         }
5865         if (pushback_index < MAXPUSHBACK-1)
5866                 return (pushback_buffer[pushback_index++] = c);
5867         else
5868                 return (EOF);
5869 }
5870
5871 int
5872 findeol(void)
5873 {
5874         int     c;
5875
5876         parsebuf = NULL;
5877
5878         /* skip to either EOF or the first real EOL */
5879         while (1) {
5880                 if (pushback_index)
5881                         c = pushback_buffer[--pushback_index];
5882                 else
5883                         c = lgetc(0);
5884                 if (c == '\n') {
5885                         file->lineno++;
5886                         break;
5887                 }
5888                 if (c == EOF)
5889                         break;
5890         }
5891         return (ERROR);
5892 }
5893
5894 int
5895 yylex(void)
5896 {
5897         char     buf[8096];
5898         char    *p, *val;
5899         int      quotec, next, c;
5900         int      token;
5901
5902 top:
5903         p = buf;
5904         while ((c = lgetc(0)) == ' ' || c == '\t')
5905                 ; /* nothing */
5906
5907         yylval.lineno = file->lineno;
5908         if (c == '#')
5909                 while ((c = lgetc(0)) != '\n' && c != EOF)
5910                         ; /* nothing */
5911         if (c == '$' && parsebuf == NULL) {
5912                 while (1) {
5913                         if ((c = lgetc(0)) == EOF)
5914                                 return (0);
5915
5916                         if (p + 1 >= buf + sizeof(buf) - 1) {
5917                                 yyerror("string too long");
5918                                 return (findeol());
5919                         }
5920                         if (isalnum(c) || c == '_') {
5921                                 *p++ = (char)c;
5922                                 continue;
5923                         }
5924                         *p = '\0';
5925                         lungetc(c);
5926                         break;
5927                 }
5928                 val = symget(buf);
5929                 if (val == NULL) {
5930                         yyerror("macro '%s' not defined", buf);
5931                         return (findeol());
5932                 }
5933                 parsebuf = val;
5934                 parseindex = 0;
5935                 goto top;
5936         }
5937
5938         switch (c) {
5939         case '\'':
5940         case '"':
5941                 quotec = c;
5942                 while (1) {
5943                         if ((c = lgetc(quotec)) == EOF)
5944                                 return (0);
5945                         if (c == '\n') {
5946                                 file->lineno++;
5947                                 continue;
5948                         } else if (c == '\\') {
5949                                 if ((next = lgetc(quotec)) == EOF)
5950                                         return (0);
5951                                 if (next == quotec || c == ' ' || c == '\t')
5952                                         c = next;
5953                                 else if (next == '\n') {
5954                                         file->lineno++;
5955                                         continue;
5956                                 }
5957                                 else
5958                                         lungetc(next);
5959                         } else if (c == quotec) {
5960                                 *p = '\0';
5961                                 break;
5962                         }
5963                         if (p + 1 >= buf + sizeof(buf) - 1) {
5964                                 yyerror("string too long");
5965                                 return (findeol());
5966                         }
5967                         *p++ = (char)c;
5968                 }
5969                 yylval.v.string = strdup(buf);
5970                 if (yylval.v.string == NULL)
5971                         err(1, "yylex: strdup");
5972                 return (STRING);
5973         case '<':
5974                 next = lgetc(0);
5975                 if (next == '>') {
5976                         yylval.v.i = PF_OP_XRG;
5977                         return (PORTBINARY);
5978                 }
5979                 lungetc(next);
5980                 break;
5981         case '>':
5982                 next = lgetc(0);
5983                 if (next == '<') {
5984                         yylval.v.i = PF_OP_IRG;
5985                         return (PORTBINARY);
5986                 }
5987                 lungetc(next);
5988                 break;
5989         case '-':
5990                 next = lgetc(0);
5991                 if (next == '>')
5992                         return (ARROW);
5993                 lungetc(next);
5994                 break;
5995         }
5996
5997 #define allowed_to_end_number(x) \
5998         (isspace(x) || x == ')' || x ==',' || x == '/' || x == '}' || x == '=')
5999
6000         if (c == '-' || isdigit(c)) {
6001                 do {
6002                         *p++ = c;
6003                         if ((unsigned)(p-buf) >= sizeof(buf)) {
6004                                 yyerror("string too long");
6005                                 return (findeol());
6006                         }
6007                 } while ((c = lgetc(0)) != EOF && isdigit(c));
6008                 lungetc(c);
6009                 if (p == buf + 1 && buf[0] == '-')
6010                         goto nodigits;
6011                 if (c == EOF || allowed_to_end_number(c)) {
6012                         const char *errstr = NULL;
6013
6014                         *p = '\0';
6015                         yylval.v.number = strtonum(buf, LLONG_MIN,
6016                             LLONG_MAX, &errstr);
6017                         if (errstr) {
6018                                 yyerror("\"%s\" invalid number: %s",
6019                                     buf, errstr);
6020                                 return (findeol());
6021                         }
6022                         return (NUMBER);
6023                 } else {
6024 nodigits:
6025                         while (p > buf + 1)
6026                                 lungetc(*--p);
6027                         c = *--p;
6028                         if (c == '-')
6029                                 return (c);
6030                 }
6031         }
6032
6033 #define allowed_in_string(x) \
6034         (isalnum(x) || (ispunct(x) && x != '(' && x != ')' && \
6035         x != '{' && x != '}' && x != '<' && x != '>' && \
6036         x != '!' && x != '=' && x != '/' && x != '#' && \
6037         x != ','))
6038
6039         if (isalnum(c) || c == ':' || c == '_') {
6040                 do {
6041                         *p++ = c;
6042                         if ((unsigned)(p-buf) >= sizeof(buf)) {
6043                                 yyerror("string too long");
6044                                 return (findeol());
6045                         }
6046                 } while ((c = lgetc(0)) != EOF && (allowed_in_string(c)));
6047                 lungetc(c);
6048                 *p = '\0';
6049                 if ((token = lookup(buf)) == STRING)
6050                         if ((yylval.v.string = strdup(buf)) == NULL)
6051                                 err(1, "yylex: strdup");
6052                 return (token);
6053         }
6054         if (c == '\n') {
6055                 yylval.lineno = file->lineno;
6056                 file->lineno++;
6057         }
6058         if (c == EOF)
6059                 return (0);
6060         return (c);
6061 }
6062
6063 int
6064 check_file_secrecy(int fd, const char *fname)
6065 {
6066         struct stat     st;
6067
6068         if (fstat(fd, &st)) {
6069                 warn("cannot stat %s", fname);
6070                 return (-1);
6071         }
6072         if (st.st_uid != 0 && st.st_uid != getuid()) {
6073                 warnx("%s: owner not root or current user", fname);
6074                 return (-1);
6075         }
6076         if (st.st_mode & (S_IRWXG | S_IRWXO)) {
6077                 warnx("%s: group/world readable/writeable", fname);
6078                 return (-1);
6079         }
6080         return (0);
6081 }
6082
6083 struct file *
6084 pushfile(const char *name, int secret)
6085 {
6086         struct file     *nfile;
6087
6088         if ((nfile = calloc(1, sizeof(struct file))) == NULL ||
6089             (nfile->name = strdup(name)) == NULL) {
6090                 warn("malloc");
6091                 return (NULL);
6092         }
6093         if (TAILQ_FIRST(&files) == NULL && strcmp(nfile->name, "-") == 0) {
6094                 nfile->stream = stdin;
6095                 free(nfile->name);
6096                 if ((nfile->name = strdup("stdin")) == NULL) {
6097                         warn("strdup");
6098                         free(nfile);
6099                         return (NULL);
6100                 }
6101         } else if ((nfile->stream = fopen(nfile->name, "r")) == NULL) {
6102                 warn("%s", nfile->name);
6103                 free(nfile->name);
6104                 free(nfile);
6105                 return (NULL);
6106         } else if (secret &&
6107             check_file_secrecy(fileno(nfile->stream), nfile->name)) {
6108                 fclose(nfile->stream);
6109                 free(nfile->name);
6110                 free(nfile);
6111                 return (NULL);
6112         }
6113         nfile->lineno = 1;
6114         TAILQ_INSERT_TAIL(&files, nfile, entry);
6115         return (nfile);
6116 }
6117
6118 int
6119 popfile(void)
6120 {
6121         struct file     *prev;
6122
6123         if ((prev = TAILQ_PREV(file, files, entry)) != NULL) {
6124                 prev->errors += file->errors;
6125                 TAILQ_REMOVE(&files, file, entry);
6126                 fclose(file->stream);
6127                 free(file->name);
6128                 free(file);
6129                 file = prev;
6130                 return (0);
6131         }
6132         return (EOF);
6133 }
6134
6135 int
6136 parse_config(char *filename, struct pfctl *xpf)
6137 {
6138         int              errors = 0;
6139         struct sym      *sym;
6140
6141         pf = xpf;
6142         errors = 0;
6143         rulestate = PFCTL_STATE_NONE;
6144         returnicmpdefault = (ICMP_UNREACH << 8) | ICMP_UNREACH_PORT;
6145         returnicmp6default =
6146             (ICMP6_DST_UNREACH << 8) | ICMP6_DST_UNREACH_NOPORT;
6147         blockpolicy = PFRULE_DROP;
6148         failpolicy = PFRULE_DROP;
6149         require_order = 1;
6150
6151         if ((file = pushfile(filename, 0)) == NULL) {
6152                 warn("cannot open the main config file!");
6153                 return (-1);
6154         }
6155
6156         yyparse();
6157         errors = file->errors;
6158         popfile();
6159
6160         /* Free macros and check which have not been used. */
6161         while ((sym = TAILQ_FIRST(&symhead))) {
6162                 if ((pf->opts & PF_OPT_VERBOSE2) && !sym->used)
6163                         fprintf(stderr, "warning: macro '%s' not "
6164                             "used\n", sym->nam);
6165                 free(sym->nam);
6166                 free(sym->val);
6167                 TAILQ_REMOVE(&symhead, sym, entry);
6168                 free(sym);
6169         }
6170
6171         return (errors ? -1 : 0);
6172 }
6173
6174 int
6175 symset(const char *nam, const char *val, int persist)
6176 {
6177         struct sym      *sym;
6178
6179         for (sym = TAILQ_FIRST(&symhead); sym && strcmp(nam, sym->nam);
6180             sym = TAILQ_NEXT(sym, entry))
6181                 ;       /* nothing */
6182
6183         if (sym != NULL) {
6184                 if (sym->persist == 1)
6185                         return (0);
6186                 else {
6187                         free(sym->nam);
6188                         free(sym->val);
6189                         TAILQ_REMOVE(&symhead, sym, entry);
6190                         free(sym);
6191                 }
6192         }
6193         if ((sym = calloc(1, sizeof(*sym))) == NULL)
6194                 return (-1);
6195
6196         sym->nam = strdup(nam);
6197         if (sym->nam == NULL) {
6198                 free(sym);
6199                 return (-1);
6200         }
6201         sym->val = strdup(val);
6202         if (sym->val == NULL) {
6203                 free(sym->nam);
6204                 free(sym);
6205                 return (-1);
6206         }
6207         sym->used = 0;
6208         sym->persist = persist;
6209         TAILQ_INSERT_TAIL(&symhead, sym, entry);
6210         return (0);
6211 }
6212
6213 int
6214 pfctl_cmdline_symset(char *s)
6215 {
6216         char    *sym, *val;
6217         int      ret;
6218
6219         if ((val = strrchr(s, '=')) == NULL)
6220                 return (-1);
6221
6222         if ((sym = malloc(strlen(s) - strlen(val) + 1)) == NULL)
6223                 err(1, "pfctl_cmdline_symset: malloc");
6224
6225         strlcpy(sym, s, strlen(s) - strlen(val) + 1);
6226
6227         ret = symset(sym, val + 1, 1);
6228         free(sym);
6229
6230         return (ret);
6231 }
6232
6233 char *
6234 symget(const char *nam)
6235 {
6236         struct sym      *sym;
6237
6238         TAILQ_FOREACH(sym, &symhead, entry)
6239                 if (strcmp(nam, sym->nam) == 0) {
6240                         sym->used = 1;
6241                         return (sym->val);
6242                 }
6243         return (NULL);
6244 }
6245
6246 void
6247 mv_rules(struct pfctl_ruleset *src, struct pfctl_ruleset *dst)
6248 {
6249         int i;
6250         struct pfctl_rule *r;
6251
6252         for (i = 0; i < PF_RULESET_MAX; ++i) {
6253                 while ((r = TAILQ_FIRST(src->rules[i].active.ptr))
6254                     != NULL) {
6255                         TAILQ_REMOVE(src->rules[i].active.ptr, r, entries);
6256                         TAILQ_INSERT_TAIL(dst->rules[i].active.ptr, r, entries);
6257                         dst->anchor->match++;
6258                 }
6259                 src->anchor->match = 0;
6260                 while ((r = TAILQ_FIRST(src->rules[i].inactive.ptr))
6261                     != NULL) {
6262                         TAILQ_REMOVE(src->rules[i].inactive.ptr, r, entries);
6263                         TAILQ_INSERT_TAIL(dst->rules[i].inactive.ptr,
6264                                 r, entries);
6265                 }
6266         }
6267 }
6268
6269 void
6270 decide_address_family(struct node_host *n, sa_family_t *af)
6271 {
6272         if (*af != 0 || n == NULL)
6273                 return;
6274         *af = n->af;
6275         while ((n = n->next) != NULL) {
6276                 if (n->af != *af) {
6277                         *af = 0;
6278                         return;
6279                 }
6280         }
6281 }
6282
6283 void
6284 remove_invalid_hosts(struct node_host **nh, sa_family_t *af)
6285 {
6286         struct node_host        *n = *nh, *prev = NULL;
6287
6288         while (n != NULL) {
6289                 if (*af && n->af && n->af != *af) {
6290                         /* unlink and free n */
6291                         struct node_host *next = n->next;
6292
6293                         /* adjust tail pointer */
6294                         if (n == (*nh)->tail)
6295                                 (*nh)->tail = prev;
6296                         /* adjust previous node's next pointer */
6297                         if (prev == NULL)
6298                                 *nh = next;
6299                         else
6300                                 prev->next = next;
6301                         /* free node */
6302                         if (n->ifname != NULL)
6303                                 free(n->ifname);
6304                         free(n);
6305                         n = next;
6306                 } else {
6307                         if (n->af && !*af)
6308                                 *af = n->af;
6309                         prev = n;
6310                         n = n->next;
6311                 }
6312         }
6313 }
6314
6315 int
6316 invalid_redirect(struct node_host *nh, sa_family_t af)
6317 {
6318         if (!af) {
6319                 struct node_host *n;
6320
6321                 /* tables and dyniftl are ok without an address family */
6322                 for (n = nh; n != NULL; n = n->next) {
6323                         if (n->addr.type != PF_ADDR_TABLE &&
6324                             n->addr.type != PF_ADDR_DYNIFTL) {
6325                                 yyerror("address family not given and "
6326                                     "translation address expands to multiple "
6327                                     "address families");
6328                                 return (1);
6329                         }
6330                 }
6331         }
6332         if (nh == NULL) {
6333                 yyerror("no translation address with matching address family "
6334                     "found.");
6335                 return (1);
6336         }
6337         return (0);
6338 }
6339
6340 int
6341 atoul(char *s, u_long *ulvalp)
6342 {
6343         u_long   ulval;
6344         char    *ep;
6345
6346         errno = 0;
6347         ulval = strtoul(s, &ep, 0);
6348         if (s[0] == '\0' || *ep != '\0')
6349                 return (-1);
6350         if (errno == ERANGE && ulval == ULONG_MAX)
6351                 return (-1);
6352         *ulvalp = ulval;
6353         return (0);
6354 }
6355
6356 int
6357 getservice(char *n)
6358 {
6359         struct servent  *s;
6360         u_long           ulval;
6361
6362         if (atoul(n, &ulval) == 0) {
6363                 if (ulval > 65535) {
6364                         yyerror("illegal port value %lu", ulval);
6365                         return (-1);
6366                 }
6367                 return (htons(ulval));
6368         } else {
6369                 s = getservbyname(n, "tcp");
6370                 if (s == NULL)
6371                         s = getservbyname(n, "udp");
6372                 if (s == NULL) {
6373                         yyerror("unknown port %s", n);
6374                         return (-1);
6375                 }
6376                 return (s->s_port);
6377         }
6378 }
6379
6380 int
6381 rule_label(struct pfctl_rule *r, char *s[PF_RULE_MAX_LABEL_COUNT])
6382 {
6383         for (int i = 0; i < PF_RULE_MAX_LABEL_COUNT; i++) {
6384                 if (s[i] == NULL)
6385                         return (0);
6386
6387                 if (strlcpy(r->label[i], s[i], sizeof(r->label[0])) >=
6388                     sizeof(r->label[0])) {
6389                         yyerror("rule label too long (max %d chars)",
6390                             sizeof(r->label[0])-1);
6391                         return (-1);
6392                 }
6393         }
6394         return (0);
6395 }
6396
6397 u_int16_t
6398 parseicmpspec(char *w, sa_family_t af)
6399 {
6400         const struct icmpcodeent        *p;
6401         u_long                           ulval;
6402         u_int8_t                         icmptype;
6403
6404         if (af == AF_INET)
6405                 icmptype = returnicmpdefault >> 8;
6406         else
6407                 icmptype = returnicmp6default >> 8;
6408
6409         if (atoul(w, &ulval) == -1) {
6410                 if ((p = geticmpcodebyname(icmptype, w, af)) == NULL) {
6411                         yyerror("unknown icmp code %s", w);
6412                         return (0);
6413                 }
6414                 ulval = p->code;
6415         }
6416         if (ulval > 255) {
6417                 yyerror("invalid icmp code %lu", ulval);
6418                 return (0);
6419         }
6420         return (icmptype << 8 | ulval);
6421 }
6422
6423 int
6424 parseport(char *port, struct range *r, int extensions)
6425 {
6426         char    *p = strchr(port, ':');
6427
6428         if (p == NULL) {
6429                 if ((r->a = getservice(port)) == -1)
6430                         return (-1);
6431                 r->b = 0;
6432                 r->t = PF_OP_NONE;
6433                 return (0);
6434         }
6435         if ((extensions & PPORT_STAR) && !strcmp(p+1, "*")) {
6436                 *p = 0;
6437                 if ((r->a = getservice(port)) == -1)
6438                         return (-1);
6439                 r->b = 0;
6440                 r->t = PF_OP_IRG;
6441                 return (0);
6442         }
6443         if ((extensions & PPORT_RANGE)) {
6444                 *p++ = 0;
6445                 if ((r->a = getservice(port)) == -1 ||
6446                     (r->b = getservice(p)) == -1)
6447                         return (-1);
6448                 if (r->a == r->b) {
6449                         r->b = 0;
6450                         r->t = PF_OP_NONE;
6451                 } else
6452                         r->t = PF_OP_RRG;
6453                 return (0);
6454         }
6455         return (-1);
6456 }
6457
6458 int
6459 pfctl_load_anchors(int dev, struct pfctl *pf, struct pfr_buffer *trans)
6460 {
6461         struct loadanchors      *la;
6462
6463         TAILQ_FOREACH(la, &loadanchorshead, entries) {
6464                 if (pf->opts & PF_OPT_VERBOSE)
6465                         fprintf(stderr, "\nLoading anchor %s from %s\n",
6466                             la->anchorname, la->filename);
6467                 if (pfctl_rules(dev, la->filename, pf->opts, pf->optimize,
6468                     la->anchorname, trans) == -1)
6469                         return (-1);
6470         }
6471
6472         return (0);
6473 }
6474
6475 int
6476 kw_casecmp(const void *k, const void *e)
6477 {
6478         return (strcasecmp(k, ((const struct keywords *)e)->k_name));
6479 }
6480
6481 int
6482 map_tos(char *s, int *val)
6483 {
6484         /* DiffServ Codepoints and other TOS mappings */
6485         const struct keywords    toswords[] = {
6486                 { "af11",               IPTOS_DSCP_AF11 },
6487                 { "af12",               IPTOS_DSCP_AF12 },
6488                 { "af13",               IPTOS_DSCP_AF13 },
6489                 { "af21",               IPTOS_DSCP_AF21 },
6490                 { "af22",               IPTOS_DSCP_AF22 },
6491                 { "af23",               IPTOS_DSCP_AF23 },
6492                 { "af31",               IPTOS_DSCP_AF31 },
6493                 { "af32",               IPTOS_DSCP_AF32 },
6494                 { "af33",               IPTOS_DSCP_AF33 },
6495                 { "af41",               IPTOS_DSCP_AF41 },
6496                 { "af42",               IPTOS_DSCP_AF42 },
6497                 { "af43",               IPTOS_DSCP_AF43 },
6498                 { "critical",           IPTOS_PREC_CRITIC_ECP },
6499                 { "cs0",                IPTOS_DSCP_CS0 },
6500                 { "cs1",                IPTOS_DSCP_CS1 },
6501                 { "cs2",                IPTOS_DSCP_CS2 },
6502                 { "cs3",                IPTOS_DSCP_CS3 },
6503                 { "cs4",                IPTOS_DSCP_CS4 },
6504                 { "cs5",                IPTOS_DSCP_CS5 },
6505                 { "cs6",                IPTOS_DSCP_CS6 },
6506                 { "cs7",                IPTOS_DSCP_CS7 },
6507                 { "ef",                 IPTOS_DSCP_EF },
6508                 { "inetcontrol",        IPTOS_PREC_INTERNETCONTROL },
6509                 { "lowdelay",           IPTOS_LOWDELAY },
6510                 { "netcontrol",         IPTOS_PREC_NETCONTROL },
6511                 { "reliability",        IPTOS_RELIABILITY },
6512                 { "throughput",         IPTOS_THROUGHPUT },
6513                 { "va",                 IPTOS_DSCP_VA }
6514         };
6515         const struct keywords   *p;
6516
6517         p = bsearch(s, toswords, sizeof(toswords)/sizeof(toswords[0]),
6518             sizeof(toswords[0]), kw_casecmp);
6519
6520         if (p) {
6521                 *val = p->k_val;
6522                 return (1);
6523         }
6524         return (0);
6525 }
6526
6527 int
6528 rt_tableid_max(void)
6529 {
6530 #ifdef __FreeBSD__
6531         int fibs;
6532         size_t l = sizeof(fibs);
6533
6534         if (sysctlbyname("net.fibs", &fibs, &l, NULL, 0) == -1)
6535                 fibs = 16;      /* XXX RT_MAXFIBS, at least limit it some. */
6536         /*
6537          * As the OpenBSD code only compares > and not >= we need to adjust
6538          * here given we only accept values of 0..n and want to avoid #ifdefs
6539          * in the grammar.
6540          */
6541         return (fibs - 1);
6542 #else
6543         return (RT_TABLEID_MAX);
6544 #endif
6545 }