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_ETHER,
 126         PFCTL_STATE_SCRUB,
 127         PFCTL_STATE_QUEUE,
 128         PFCTL_STATE_NAT,
 129         PFCTL_STATE_FILTER
 130 };
 131
 132 struct node_etherproto {
 133         u_int16_t                proto;
 134         struct node_etherproto  *next;
 135         struct node_etherproto  *tail;
 136 };
 137
 138 struct node_proto {
 139         u_int8_t                 proto;
 140         struct node_proto       *next;
 141         struct node_proto       *tail;
 142 };
 143
 144 struct node_port {
 145         u_int16_t                port[2];
 146         u_int8_t                 op;
 147         struct node_port        *next;
 148         struct node_port        *tail;
 149 };
 150
 151 struct node_uid {
 152         uid_t                    uid[2];
 153         u_int8_t                 op;
 154         struct node_uid         *next;
 155         struct node_uid         *tail;
 156 };
 157
 158 struct node_gid {
 159         gid_t                    gid[2];
 160         u_int8_t                 op;
 161         struct node_gid         *next;
 162         struct node_gid         *tail;
 163 };
 164
 165 struct node_icmp {
 166         u_int8_t                 code;
 167         u_int8_t                 type;
 168         u_int8_t                 proto;
 169         struct node_icmp        *next;
 170         struct node_icmp        *tail;
 171 };
 172
 173 enum    { PF_STATE_OPT_MAX, PF_STATE_OPT_NOSYNC, PF_STATE_OPT_SRCTRACK,
 174             PF_STATE_OPT_MAX_SRC_STATES, PF_STATE_OPT_MAX_SRC_CONN,
 175             PF_STATE_OPT_MAX_SRC_CONN_RATE, PF_STATE_OPT_MAX_SRC_NODES,
 176             PF_STATE_OPT_OVERLOAD, PF_STATE_OPT_STATELOCK,
 177             PF_STATE_OPT_TIMEOUT, PF_STATE_OPT_SLOPPY, };
 178
 179 enum    { PF_SRCTRACK_NONE, PF_SRCTRACK, PF_SRCTRACK_GLOBAL, PF_SRCTRACK_RULE };
 180
 181 struct node_state_opt {
 182         int                      type;
 183         union {
 184                 u_int32_t        max_states;
 185                 u_int32_t        max_src_states;
 186                 u_int32_t        max_src_conn;
 187                 struct {
 188                         u_int32_t       limit;
 189                         u_int32_t       seconds;
 190                 }                max_src_conn_rate;
 191                 struct {
 192                         u_int8_t        flush;
 193                         char            tblname[PF_TABLE_NAME_SIZE];
 194                 }                overload;
 195                 u_int32_t        max_src_nodes;
 196                 u_int8_t         src_track;
 197                 u_int32_t        statelock;
 198                 struct {
 199                         int             number;
 200                         u_int32_t       seconds;
 201                 }                timeout;
 202         }                        data;
 203         struct node_state_opt   *next;
 204         struct node_state_opt   *tail;
 205 };
 206
 207 struct peer {
 208         struct node_host        *host;
 209         struct node_port        *port;
 210 };
 211
 212 static struct node_queue {
 213         char                     queue[PF_QNAME_SIZE];
 214         char                     parent[PF_QNAME_SIZE];
 215         char                     ifname[IFNAMSIZ];
 216         int                      scheduler;
 217         struct node_queue       *next;
 218         struct node_queue       *tail;
 219 }       *queues = NULL;
 220
 221 struct node_qassign {
 222         char            *qname;
 223         char            *pqname;
 224 };
 225
 226 static struct filter_opts {
 227         int                      marker;
 228 #define FOM_FLAGS       0x01
 229 #define FOM_ICMP        0x02
 230 #define FOM_TOS         0x04
 231 #define FOM_KEEP        0x08
 232 #define FOM_SRCTRACK    0x10
 233 #define FOM_SETPRIO     0x0400
 234 #define FOM_PRIO        0x2000
 235         struct node_uid         *uid;
 236         struct node_gid         *gid;
 237         struct {
 238                 u_int8_t         b1;
 239                 u_int8_t         b2;
 240                 u_int16_t        w;
 241                 u_int16_t        w2;
 242         } flags;
 243         struct node_icmp        *icmpspec;
 244         u_int32_t                tos;
 245         u_int32_t                prob;
 246         u_int32_t                ridentifier;
 247         struct {
 248                 int                      action;
 249                 struct node_state_opt   *options;
 250         } keep;
 251         int                      fragment;
 252         int                      allowopts;
 253         char                    *label[PF_RULE_MAX_LABEL_COUNT];
 254         int                      labelcount;
 255         struct node_qassign      queues;
 256         char                    *tag;
 257         char                    *match_tag;
 258         u_int8_t                 match_tag_not;
 259         u_int16_t                dnpipe;
 260         u_int16_t                dnrpipe;
 261         u_int32_t                free_flags;
 262         u_int                    rtableid;
 263         u_int8_t                 prio;
 264         u_int8_t                 set_prio[2];
 265         struct {
 266                 struct node_host        *addr;
 267                 u_int16_t               port;
 268         }                        divert;
 269 } filter_opts;
 270
 271 static struct antispoof_opts {
 272         char                    *label[PF_RULE_MAX_LABEL_COUNT];
 273         int                      labelcount;
 274         u_int32_t                ridentifier;
 275         u_int                    rtableid;
 276 } antispoof_opts;
 277
 278 static struct scrub_opts {
 279         int                      marker;
 280 #define SOM_MINTTL      0x01
 281 #define SOM_MAXMSS      0x02
 282 #define SOM_FRAGCACHE   0x04
 283 #define SOM_SETTOS      0x08
 284         int                      nodf;
 285         int                      minttl;
 286         int                      maxmss;
 287         int                      settos;
 288         int                      fragcache;
 289         int                      randomid;
 290         int                      reassemble_tcp;
 291         char                    *match_tag;
 292         u_int8_t                 match_tag_not;
 293         u_int                    rtableid;
 294 } scrub_opts;
 295
 296 static struct queue_opts {
 297         int                     marker;
 298 #define QOM_BWSPEC      0x01
 299 #define QOM_SCHEDULER   0x02
 300 #define QOM_PRIORITY    0x04
 301 #define QOM_TBRSIZE     0x08
 302 #define QOM_QLIMIT      0x10
 303         struct node_queue_bw    queue_bwspec;
 304         struct node_queue_opt   scheduler;
 305         int                     priority;
 306         unsigned int            tbrsize;
 307         int                     qlimit;
 308 } queue_opts;
 309
 310 static struct table_opts {
 311         int                     flags;
 312         int                     init_addr;
 313         struct node_tinithead   init_nodes;
 314 } table_opts;
 315
 316 static struct pool_opts {
 317         int                      marker;
 318 #define POM_TYPE                0x01
 319 #define POM_STICKYADDRESS       0x02
 320         u_int8_t                 opts;
 321         int                      type;
 322         int                      staticport;
 323         struct pf_poolhashkey   *key;
 324         struct pf_mape_portset   mape;
 325
 326 } pool_opts;
 327
 328 static struct codel_opts         codel_opts;
 329 static struct node_hfsc_opts     hfsc_opts;
 330 static struct node_fairq_opts    fairq_opts;
 331 static struct node_state_opt    *keep_state_defaults = NULL;
 332 static struct pfctl_watermarks   syncookie_opts;
 333
 334 int              disallow_table(struct node_host *, const char *);
 335 int              disallow_urpf_failed(struct node_host *, const char *);
 336 int              disallow_alias(struct node_host *, const char *);
 337 int              rule_consistent(struct pfctl_rule *, int);
 338 int              filter_consistent(struct pfctl_rule *, int);
 339 int              nat_consistent(struct pfctl_rule *);
 340 int              rdr_consistent(struct pfctl_rule *);
 341 int              process_tabledef(char *, struct table_opts *);
 342 void             expand_label_str(char *, size_t, const char *, const char *);
 343 void             expand_label_if(const char *, char *, size_t, const char *);
 344 void             expand_label_addr(const char *, char *, size_t, u_int8_t,
 345                     struct pf_rule_addr *);
 346 void             expand_label_port(const char *, char *, size_t,
 347                     struct pf_rule_addr *);
 348 void             expand_label_proto(const char *, char *, size_t, u_int8_t);
 349 void             expand_label_nr(const char *, char *, size_t,
 350                     struct pfctl_rule *);
 351 void             expand_eth_rule(struct pfctl_eth_rule *,
 352                     struct node_if *, struct node_etherproto *,
 353                     struct node_mac *, struct node_mac *,
 354                     struct node_host *, struct node_host *, const char *);
 355 void             expand_rule(struct pfctl_rule *, struct node_if *,
 356                     struct node_host *, struct node_proto *, struct node_os *,
 357                     struct node_host *, struct node_port *, struct node_host *,
 358                     struct node_port *, struct node_uid *, struct node_gid *,
 359                     struct node_icmp *, const char *);
 360 int              expand_altq(struct pf_altq *, struct node_if *,
 361                     struct node_queue *, struct node_queue_bw bwspec,
 362                     struct node_queue_opt *);
 363 int              expand_queue(struct pf_altq *, struct node_if *,
 364                     struct node_queue *, struct node_queue_bw,
 365                     struct node_queue_opt *);
 366 int              expand_skip_interface(struct node_if *);
 367
 368 int      check_rulestate(int);
 369 int      getservice(char *);
 370 int      rule_label(struct pfctl_rule *, char *s[PF_RULE_MAX_LABEL_COUNT]);
 371 int      rt_tableid_max(void);
 372
 373 void     mv_rules(struct pfctl_ruleset *, struct pfctl_ruleset *);
 374 void     mv_eth_rules(struct pfctl_eth_ruleset *, struct pfctl_eth_ruleset *);
 375 void     decide_address_family(struct node_host *, sa_family_t *);
 376 void     remove_invalid_hosts(struct node_host **, sa_family_t *);
 377 int      invalid_redirect(struct node_host *, sa_family_t);
 378 u_int16_t parseicmpspec(char *, sa_family_t);
 379 int      kw_casecmp(const void *, const void *);
 380 int      map_tos(char *string, int *);
 381 struct node_mac* node_mac_from_string(const char *);
 382 struct node_mac* node_mac_from_string_masklen(const char *, int);
 383 struct node_mac* node_mac_from_string_mask(const char *, const char *);
 384
 385 static TAILQ_HEAD(loadanchorshead, loadanchors)
 386     loadanchorshead = TAILQ_HEAD_INITIALIZER(loadanchorshead);
 387
 388 struct loadanchors {
 389         TAILQ_ENTRY(loadanchors)         entries;
 390         char                            *anchorname;
 391         char                            *filename;
 392 };
 393
 394 typedef struct {
 395         union {
 396                 int64_t                  number;
 397                 double                   probability;
 398                 int                      i;
 399                 char                    *string;
 400                 u_int                    rtableid;
 401                 struct {
 402                         u_int8_t         b1;
 403                         u_int8_t         b2;
 404                         u_int16_t        w;
 405                         u_int16_t        w2;
 406                 }                        b;
 407                 struct range {
 408                         int              a;
 409                         int              b;
 410                         int              t;
 411                 }                        range;
 412                 struct node_if          *interface;
 413                 struct node_proto       *proto;
 414                 struct node_etherproto  *etherproto;
 415                 struct node_icmp        *icmp;
 416                 struct node_host        *host;
 417                 struct node_os          *os;
 418                 struct node_port        *port;
 419                 struct node_uid         *uid;
 420                 struct node_gid         *gid;
 421                 struct node_state_opt   *state_opt;
 422                 struct peer              peer;
 423                 struct {
 424                         struct peer      src, dst;
 425                         struct node_os  *src_os;
 426                 }                        fromto;
 427                 struct {
 428                         struct node_mac *src;
 429                         struct node_mac *dst;
 430                 }                        etherfromto;
 431                 struct node_mac         *mac;
 432                 struct {
 433                         struct node_mac *mac;
 434                 } etheraddr;
 435                 struct {
 436                         struct node_host        *host;
 437                         u_int8_t                 rt;
 438                         u_int8_t                 pool_opts;
 439                         sa_family_t              af;
 440                         struct pf_poolhashkey   *key;
 441                 }                        route;
 442                 struct redirection {
 443                         struct node_host        *host;
 444                         struct range             rport;
 445                 }                       *redirection;
 446                 struct {
 447                         int                      action;
 448                         struct node_state_opt   *options;
 449                 }                        keep_state;
 450                 struct {
 451                         u_int8_t         log;
 452                         u_int8_t         logif;
 453                         u_int8_t         quick;
 454                 }                        logquick;
 455                 struct {
 456                         int              neg;
 457                         char            *name;
 458                 }                        tagged;
 459                 struct pf_poolhashkey   *hashkey;
 460                 struct node_queue       *queue;
 461                 struct node_queue_opt    queue_options;
 462                 struct node_queue_bw     queue_bwspec;
 463                 struct node_qassign      qassign;
 464                 struct filter_opts       filter_opts;
 465                 struct antispoof_opts    antispoof_opts;
 466                 struct queue_opts        queue_opts;
 467                 struct scrub_opts        scrub_opts;
 468                 struct table_opts        table_opts;
 469                 struct pool_opts         pool_opts;
 470                 struct node_hfsc_opts    hfsc_opts;
 471                 struct node_fairq_opts   fairq_opts;
 472                 struct codel_opts        codel_opts;
 473                 struct pfctl_watermarks *watermarks;
 474         } v;
 475         int lineno;
 476 } YYSTYPE;
 477
 478 #define PPORT_RANGE     1
 479 #define PPORT_STAR      2
 480 int     parseport(char *, struct range *r, int);
 481
 482 #define DYNIF_MULTIADDR(addr) ((addr).type == PF_ADDR_DYNIFTL && \
 483         (!((addr).iflags & PFI_AFLAG_NOALIAS) ||                 \
 484         !isdigit((addr).v.ifname[strlen((addr).v.ifname)-1])))
 485
 486 %}
 487
 488 %token  PASS BLOCK MATCH SCRUB RETURN IN OS OUT LOG QUICK ON FROM TO FLAGS
 489 %token  RETURNRST RETURNICMP RETURNICMP6 PROTO INET INET6 ALL ANY ICMPTYPE
 490 %token  ICMP6TYPE CODE KEEP MODULATE STATE PORT RDR NAT BINAT ARROW NODF
 491 %token  MINTTL ERROR ALLOWOPTS FASTROUTE FILENAME ROUTETO DUPTO REPLYTO NO LABEL
 492 %token  NOROUTE URPFFAILED FRAGMENT USER GROUP MAXMSS MAXIMUM TTL TOS DROP TABLE
 493 %token  REASSEMBLE FRAGDROP FRAGCROP ANCHOR NATANCHOR RDRANCHOR BINATANCHOR
 494 %token  SET OPTIMIZATION TIMEOUT LIMIT LOGINTERFACE BLOCKPOLICY FAILPOLICY
 495 %token  RANDOMID REQUIREORDER SYNPROXY FINGERPRINTS NOSYNC DEBUG SKIP HOSTID
 496 %token  ANTISPOOF FOR INCLUDE KEEPCOUNTERS SYNCOOKIES L3
 497 %token  ETHER
 498 %token  BITMASK RANDOM SOURCEHASH ROUNDROBIN STATICPORT PROBABILITY MAPEPORTSET
 499 %token  ALTQ CBQ CODEL PRIQ HFSC FAIRQ BANDWIDTH TBRSIZE LINKSHARE REALTIME
 500 %token  UPPERLIMIT QUEUE PRIORITY QLIMIT HOGS BUCKETS RTABLE TARGET INTERVAL
 501 %token  DNPIPE DNQUEUE RIDENTIFIER
 502 %token  LOAD RULESET_OPTIMIZATION PRIO
 503 %token  STICKYADDRESS MAXSRCSTATES MAXSRCNODES SOURCETRACK GLOBAL RULE
 504 %token  MAXSRCCONN MAXSRCCONNRATE OVERLOAD FLUSH SLOPPY
 505 %token  TAGGED TAG IFBOUND FLOATING STATEPOLICY STATEDEFAULTS ROUTE SETTOS
 506 %token  DIVERTTO DIVERTREPLY
 507 %token  <v.string>              STRING
 508 %token  <v.number>              NUMBER
 509 %token  <v.i>                   PORTBINARY
 510 %type   <v.interface>           interface if_list if_item_not if_item
 511 %type   <v.number>              number icmptype icmp6type uid gid
 512 %type   <v.number>              tos not yesno
 513 %type   <v.probability>         probability
 514 %type   <v.i>                   no dir af fragcache optimizer syncookie_val
 515 %type   <v.i>                   sourcetrack flush unaryop statelock
 516 %type   <v.i>                   etherprotoval
 517 %type   <v.b>                   action nataction natpasslog scrubaction
 518 %type   <v.b>                   flags flag blockspec prio
 519 %type   <v.range>               portplain portstar portrange
 520 %type   <v.hashkey>             hashkey
 521 %type   <v.proto>               proto proto_list proto_item
 522 %type   <v.number>              protoval
 523 %type   <v.icmp>                icmpspec
 524 %type   <v.icmp>                icmp_list icmp_item
 525 %type   <v.icmp>                icmp6_list icmp6_item
 526 %type   <v.number>              reticmpspec reticmp6spec
 527 %type   <v.fromto>              fromto l3fromto
 528 %type   <v.peer>                ipportspec from to
 529 %type   <v.host>                ipspec toipspec xhost host dynaddr host_list
 530 %type   <v.host>                redir_host_list redirspec
 531 %type   <v.host>                route_host route_host_list routespec
 532 %type   <v.os>                  os xos os_list
 533 %type   <v.port>                portspec port_list port_item
 534 %type   <v.uid>                 uids uid_list uid_item
 535 %type   <v.gid>                 gids gid_list gid_item
 536 %type   <v.route>               route
 537 %type   <v.redirection>         redirection redirpool
 538 %type   <v.string>              label stringall tag anchorname
 539 %type   <v.string>              string varstring numberstring
 540 %type   <v.keep_state>          keep
 541 %type   <v.state_opt>           state_opt_spec state_opt_list state_opt_item
 542 %type   <v.logquick>            logquick quick log logopts logopt
 543 %type   <v.interface>           antispoof_ifspc antispoof_iflst antispoof_if
 544 %type   <v.qassign>             qname etherqname
 545 %type   <v.queue>               qassign qassign_list qassign_item
 546 %type   <v.queue_options>       scheduler
 547 %type   <v.number>              cbqflags_list cbqflags_item
 548 %type   <v.number>              priqflags_list priqflags_item
 549 %type   <v.hfsc_opts>           hfscopts_list hfscopts_item hfsc_opts
 550 %type   <v.fairq_opts>          fairqopts_list fairqopts_item fairq_opts
 551 %type   <v.codel_opts>          codelopts_list codelopts_item codel_opts
 552 %type   <v.queue_bwspec>        bandwidth
 553 %type   <v.filter_opts>         filter_opts filter_opt filter_opts_l etherfilter_opts etherfilter_opt etherfilter_opts_l
 554 %type   <v.filter_opts>         filter_sets filter_set filter_sets_l
 555 %type   <v.antispoof_opts>      antispoof_opts antispoof_opt antispoof_opts_l
 556 %type   <v.queue_opts>          queue_opts queue_opt queue_opts_l
 557 %type   <v.scrub_opts>          scrub_opts scrub_opt scrub_opts_l
 558 %type   <v.table_opts>          table_opts table_opt table_opts_l
 559 %type   <v.pool_opts>           pool_opts pool_opt pool_opts_l
 560 %type   <v.tagged>              tagged
 561 %type   <v.rtableid>            rtable
 562 %type   <v.watermarks>          syncookie_opts
 563 %type   <v.etherproto>          etherproto etherproto_list etherproto_item
 564 %type   <v.etherfromto>         etherfromto
 565 %type   <v.etheraddr>           etherfrom etherto
 566 %type   <v.mac>                 xmac mac mac_list macspec
 567 %%
 568
 569 ruleset         : /* empty */
 570                 | ruleset include '\n'
 571                 | ruleset '\n'
 572                 | ruleset option '\n'
 573                 | ruleset etherrule '\n'
 574                 | ruleset etheranchorrule '\n'
 575                 | ruleset scrubrule '\n'
 576                 | ruleset natrule '\n'
 577                 | ruleset binatrule '\n'
 578                 | ruleset pfrule '\n'
 579                 | ruleset anchorrule '\n'
 580                 | ruleset loadrule '\n'
 581                 | ruleset altqif '\n'
 582                 | ruleset queuespec '\n'
 583                 | ruleset varset '\n'
 584                 | ruleset antispoof '\n'
 585                 | ruleset tabledef '\n'
 586                 | '{' fakeanchor '}' '\n';
 587                 | ruleset error '\n'            { file->errors++; }
 588                 ;
 589
 590 include         : INCLUDE STRING                {
 591                         struct file     *nfile;
 592
 593                         if ((nfile = pushfile($2, 0)) == NULL) {
 594                                 yyerror("failed to include file %s", $2);
 595                                 free($2);
 596                                 YYERROR;
 597                         }
 598                         free($2);
 599
 600                         file = nfile;
 601                         lungetc('\n');
 602                 }
 603                 ;
 604
 605 /*
 606  * apply to previouslys specified rule: must be careful to note
 607  * what that is: pf or nat or binat or rdr
 608  */
 609 fakeanchor      : fakeanchor '\n'
 610                 | fakeanchor anchorrule '\n'
 611                 | fakeanchor binatrule '\n'
 612                 | fakeanchor natrule '\n'
 613                 | fakeanchor pfrule '\n'
 614                 | fakeanchor error '\n'
 615                 ;
 616
 617 optimizer       : string        {
 618                         if (!strcmp($1, "none"))
 619                                 $$ = 0;
 620                         else if (!strcmp($1, "basic"))
 621                                 $$ = PF_OPTIMIZE_BASIC;
 622                         else if (!strcmp($1, "profile"))
 623                                 $$ = PF_OPTIMIZE_BASIC | PF_OPTIMIZE_PROFILE;
 624                         else {
 625                                 yyerror("unknown ruleset-optimization %s", $1);
 626                                 YYERROR;
 627                         }
 628                 }
 629                 ;
 630
 631 option          : SET OPTIMIZATION STRING               {
 632                         if (check_rulestate(PFCTL_STATE_OPTION)) {
 633                                 free($3);
 634                                 YYERROR;
 635                         }
 636                         if (pfctl_set_optimization(pf, $3) != 0) {
 637                                 yyerror("unknown optimization %s", $3);
 638                                 free($3);
 639                                 YYERROR;
 640                         }
 641                         free($3);
 642                 }
 643                 | SET RULESET_OPTIMIZATION optimizer {
 644                         if (!(pf->opts & PF_OPT_OPTIMIZE)) {
 645                                 pf->opts |= PF_OPT_OPTIMIZE;
 646                                 pf->optimize = $3;
 647                         }
 648                 }
 649                 | SET TIMEOUT timeout_spec
 650                 | SET TIMEOUT '{' optnl timeout_list '}'
 651                 | SET LIMIT limit_spec
 652                 | SET LIMIT '{' optnl limit_list '}'
 653                 | SET LOGINTERFACE stringall            {
 654                         if (check_rulestate(PFCTL_STATE_OPTION)) {
 655                                 free($3);
 656                                 YYERROR;
 657                         }
 658                         if (pfctl_set_logif(pf, $3) != 0) {
 659                                 yyerror("error setting loginterface %s", $3);
 660                                 free($3);
 661                                 YYERROR;
 662                         }
 663                         free($3);
 664                 }
 665                 | SET HOSTID number {
 666                         if ($3 == 0 || $3 > UINT_MAX) {
 667                                 yyerror("hostid must be non-zero");
 668                                 YYERROR;
 669                         }
 670                         if (pfctl_set_hostid(pf, $3) != 0) {
 671                                 yyerror("error setting hostid %08x", $3);
 672                                 YYERROR;
 673                         }
 674                 }
 675                 | SET BLOCKPOLICY DROP  {
 676                         if (pf->opts & PF_OPT_VERBOSE)
 677                                 printf("set block-policy drop\n");
 678                         if (check_rulestate(PFCTL_STATE_OPTION))
 679                                 YYERROR;
 680                         blockpolicy = PFRULE_DROP;
 681                 }
 682                 | SET BLOCKPOLICY RETURN {
 683                         if (pf->opts & PF_OPT_VERBOSE)
 684                                 printf("set block-policy return\n");
 685                         if (check_rulestate(PFCTL_STATE_OPTION))
 686                                 YYERROR;
 687                         blockpolicy = PFRULE_RETURN;
 688                 }
 689                 | SET FAILPOLICY DROP   {
 690                         if (pf->opts & PF_OPT_VERBOSE)
 691                                 printf("set fail-policy drop\n");
 692                         if (check_rulestate(PFCTL_STATE_OPTION))
 693                                 YYERROR;
 694                         failpolicy = PFRULE_DROP;
 695                 }
 696                 | SET FAILPOLICY RETURN {
 697                         if (pf->opts & PF_OPT_VERBOSE)
 698                                 printf("set fail-policy return\n");
 699                         if (check_rulestate(PFCTL_STATE_OPTION))
 700                                 YYERROR;
 701                         failpolicy = PFRULE_RETURN;
 702                 }
 703                 | SET REQUIREORDER yesno {
 704                         if (pf->opts & PF_OPT_VERBOSE)
 705                                 printf("set require-order %s\n",
 706                                     $3 == 1 ? "yes" : "no");
 707                         require_order = $3;
 708                 }
 709                 | SET FINGERPRINTS STRING {
 710                         if (pf->opts & PF_OPT_VERBOSE)
 711                                 printf("set fingerprints \"%s\"\n", $3);
 712                         if (check_rulestate(PFCTL_STATE_OPTION)) {
 713                                 free($3);
 714                                 YYERROR;
 715                         }
 716                         if (!pf->anchor->name[0]) {
 717                                 if (pfctl_file_fingerprints(pf->dev,
 718                                     pf->opts, $3)) {
 719                                         yyerror("error loading "
 720                                             "fingerprints %s", $3);
 721                                         free($3);
 722                                         YYERROR;
 723                                 }
 724                         }
 725                         free($3);
 726                 }
 727                 | SET STATEPOLICY statelock {
 728                         if (pf->opts & PF_OPT_VERBOSE)
 729                                 switch ($3) {
 730                                 case 0:
 731                                         printf("set state-policy floating\n");
 732                                         break;
 733                                 case PFRULE_IFBOUND:
 734                                         printf("set state-policy if-bound\n");
 735                                         break;
 736                                 }
 737                         default_statelock = $3;
 738                 }
 739                 | SET DEBUG STRING {
 740                         if (check_rulestate(PFCTL_STATE_OPTION)) {
 741                                 free($3);
 742                                 YYERROR;
 743                         }
 744                         if (pfctl_set_debug(pf, $3) != 0) {
 745                                 yyerror("error setting debuglevel %s", $3);
 746                                 free($3);
 747                                 YYERROR;
 748                         }
 749                         free($3);
 750                 }
 751                 | SET SKIP interface {
 752                         if (expand_skip_interface($3) != 0) {
 753                                 yyerror("error setting skip interface(s)");
 754                                 YYERROR;
 755                         }
 756                 }
 757                 | SET STATEDEFAULTS state_opt_list {
 758                         if (keep_state_defaults != NULL) {
 759                                 yyerror("cannot redefine state-defaults");
 760                                 YYERROR;
 761                         }
 762                         keep_state_defaults = $3;
 763                 }
 764                 | SET KEEPCOUNTERS {
 765                         pf->keep_counters = true;
 766                 }
 767                 | SET SYNCOOKIES syncookie_val syncookie_opts {
 768                         if (pfctl_cfg_syncookies(pf, $3, $4)) {
 769                                 yyerror("error setting syncookies");
 770                                 YYERROR;
 771                         }
 772                 }
 773                 ;
 774
 775 syncookie_val  : STRING        {
 776                         if (!strcmp($1, "never"))
 777                                 $$ = PFCTL_SYNCOOKIES_NEVER;
 778                         else if (!strcmp($1, "adaptive"))
 779                                 $$ = PFCTL_SYNCOOKIES_ADAPTIVE;
 780                         else if (!strcmp($1, "always"))
 781                                 $$ = PFCTL_SYNCOOKIES_ALWAYS;
 782                         else {
 783                                 yyerror("illegal value for syncookies");
 784                                 YYERROR;
 785                         }
 786                 }
 787                 ;
 788 syncookie_opts  : /* empty */                   { $$ = NULL; }
 789                 | {
 790                         memset(&syncookie_opts, 0, sizeof(syncookie_opts));
 791                   } '(' syncookie_opt_l ')'     { $$ = &syncookie_opts; }
 792                 ;
 793
 794 syncookie_opt_l : syncookie_opt_l comma syncookie_opt
 795                 | syncookie_opt
 796                 ;
 797
 798 syncookie_opt   : STRING STRING {
 799                         double   val;
 800                         char    *cp;
 801
 802                         val = strtod($2, &cp);
 803                         if (cp == NULL || strcmp(cp, "%"))
 804                                 YYERROR;
 805                         if (val <= 0 || val > 100) {
 806                                 yyerror("illegal percentage value");
 807                                 YYERROR;
 808                         }
 809                         if (!strcmp($1, "start")) {
 810                                 syncookie_opts.hi = val;
 811                         } else if (!strcmp($1, "end")) {
 812                                 syncookie_opts.lo = val;
 813                         } else {
 814                                 yyerror("illegal syncookie option");
 815                                 YYERROR;
 816                         }
 817                 }
 818                 ;
 819
 820 stringall       : STRING        { $$ = $1; }
 821                 | ALL           {
 822                         if (($$ = strdup("all")) == NULL) {
 823                                 err(1, "stringall: strdup");
 824                         }
 825                 }
 826                 ;
 827
 828 string          : STRING string                         {
 829                         if (asprintf(&$$, "%s %s", $1, $2) == -1)
 830                                 err(1, "string: asprintf");
 831                         free($1);
 832                         free($2);
 833                 }
 834                 | STRING
 835                 ;
 836
 837 varstring       : numberstring varstring                {
 838                         if (asprintf(&$$, "%s %s", $1, $2) == -1)
 839                                 err(1, "string: asprintf");
 840                         free($1);
 841                         free($2);
 842                 }
 843                 | numberstring
 844                 ;
 845
 846 numberstring    : NUMBER                                {
 847                         char    *s;
 848                         if (asprintf(&s, "%lld", (long long)$1) == -1) {
 849                                 yyerror("string: asprintf");
 850                                 YYERROR;
 851                         }
 852                         $$ = s;
 853                 }
 854                 | STRING
 855                 ;
 856
 857 varset          : STRING '=' varstring  {
 858                         char *s = $1;
 859                         if (pf->opts & PF_OPT_VERBOSE)
 860                                 printf("%s = \"%s\"\n", $1, $3);
 861                         while (*s++) {
 862                                 if (isspace((unsigned char)*s)) {
 863                                         yyerror("macro name cannot contain "
 864                                            "whitespace");
 865                                         YYERROR;
 866                                 }
 867                         }
 868                         if (symset($1, $3, 0) == -1)
 869                                 err(1, "cannot store variable %s", $1);
 870                         free($1);
 871                         free($3);
 872                 }
 873                 ;
 874
 875 anchorname      : STRING                        { $$ = $1; }
 876                 | /* empty */                   { $$ = NULL; }
 877                 ;
 878
 879 pfa_anchorlist  : /* empty */
 880                 | pfa_anchorlist '\n'
 881                 | pfa_anchorlist pfrule '\n'
 882                 | pfa_anchorlist anchorrule '\n'
 883                 ;
 884
 885 pfa_anchor      : '{'
 886                 {
 887                         char ta[PF_ANCHOR_NAME_SIZE];
 888                         struct pfctl_ruleset *rs;
 889
 890                         /* stepping into a brace anchor */
 891                         pf->asd++;
 892                         pf->bn++;
 893
 894                         /* create a holding ruleset in the root */
 895                         snprintf(ta, PF_ANCHOR_NAME_SIZE, "_%d", pf->bn);
 896                         rs = pf_find_or_create_ruleset(ta);
 897                         if (rs == NULL)
 898                                 err(1, "pfa_anchor: pf_find_or_create_ruleset");
 899                         pf->astack[pf->asd] = rs->anchor;
 900                         pf->anchor = rs->anchor;
 901                 } '\n' pfa_anchorlist '}'
 902                 {
 903                         pf->alast = pf->anchor;
 904                         pf->asd--;
 905                         pf->anchor = pf->astack[pf->asd];
 906                 }
 907                 | /* empty */
 908                 ;
 909
 910 anchorrule      : ANCHOR anchorname dir quick interface af proto fromto
 911                     filter_opts pfa_anchor
 912                 {
 913                         struct pfctl_rule       r;
 914                         struct node_proto       *proto;
 915
 916                         if (check_rulestate(PFCTL_STATE_FILTER)) {
 917                                 if ($2)
 918                                         free($2);
 919                                 YYERROR;
 920                         }
 921
 922                         if ($2 && ($2[0] == '_' || strstr($2, "/_") != NULL)) {
 923                                 free($2);
 924                                 yyerror("anchor names beginning with '_' "
 925                                     "are reserved for internal use");
 926                                 YYERROR;
 927                         }
 928
 929                         memset(&r, 0, sizeof(r));
 930                         if (pf->astack[pf->asd + 1]) {
 931                                 /* move inline rules into relative location */
 932                                 pfctl_anchor_setup(&r,
 933                                     &pf->astack[pf->asd]->ruleset,
 934                                     $2 ? $2 : pf->alast->name);
 935
 936                                 if (r.anchor == NULL)
 937                                         err(1, "anchorrule: unable to "
 938                                             "create ruleset");
 939
 940                                 if (pf->alast != r.anchor) {
 941                                         if (r.anchor->match) {
 942                                                 yyerror("inline anchor '%s' "
 943                                                     "already exists",
 944                                                     r.anchor->name);
 945                                                 YYERROR;
 946                                         }
 947                                         mv_rules(&pf->alast->ruleset,
 948                                             &r.anchor->ruleset);
 949                                 }
 950                                 pf_remove_if_empty_ruleset(&pf->alast->ruleset);
 951                                 pf->alast = r.anchor;
 952                         } else {
 953                                 if (!$2) {
 954                                         yyerror("anchors without explicit "
 955                                             "rules must specify a name");
 956                                         YYERROR;
 957                                 }
 958                         }
 959                         r.direction = $3;
 960                         r.quick = $4.quick;
 961                         r.af = $6;
 962                         r.prob = $9.prob;
 963                         r.rtableid = $9.rtableid;
 964                         r.ridentifier = $9.ridentifier;
 965
 966                         if ($9.tag)
 967                                 if (strlcpy(r.tagname, $9.tag,
 968                                     PF_TAG_NAME_SIZE) >= PF_TAG_NAME_SIZE) {
 969                                         yyerror("tag too long, max %u chars",
 970                                             PF_TAG_NAME_SIZE - 1);
 971                                         YYERROR;
 972                                 }
 973                         if ($9.match_tag)
 974                                 if (strlcpy(r.match_tagname, $9.match_tag,
 975                                     PF_TAG_NAME_SIZE) >= PF_TAG_NAME_SIZE) {
 976                                         yyerror("tag too long, max %u chars",
 977                                             PF_TAG_NAME_SIZE - 1);
 978                                         YYERROR;
 979                                 }
 980                         r.match_tag_not = $9.match_tag_not;
 981                         if (rule_label(&r, $9.label))
 982                                 YYERROR;
 983                         for (int i = 0; i < PF_RULE_MAX_LABEL_COUNT; i++)
 984                                 free($9.label[i]);
 985                         r.flags = $9.flags.b1;
 986                         r.flagset = $9.flags.b2;
 987                         if (($9.flags.b1 & $9.flags.b2) != $9.flags.b1) {
 988                                 yyerror("flags always false");
 989                                 YYERROR;
 990                         }
 991                         if ($9.flags.b1 || $9.flags.b2 || $8.src_os) {
 992                                 for (proto = $7; proto != NULL &&
 993                                     proto->proto != IPPROTO_TCP;
 994                                     proto = proto->next)
 995                                         ;       /* nothing */
 996                                 if (proto == NULL && $7 != NULL) {
 997                                         if ($9.flags.b1 || $9.flags.b2)
 998                                                 yyerror(
 999                                                     "flags only apply to tcp");
1000                                         if ($8.src_os)
1001                                                 yyerror(
1002                                                     "OS fingerprinting only "
1003                                                     "applies to tcp");
1004                                         YYERROR;
1005                                 }
1006                         }
1007
1008                         r.tos = $9.tos;
1009
1010                         if ($9.keep.action) {
1011                                 yyerror("cannot specify state handling "
1012                                     "on anchors");
1013                                 YYERROR;
1014                         }
1015
1016                         if ($9.match_tag)
1017                                 if (strlcpy(r.match_tagname, $9.match_tag,
1018                                     PF_TAG_NAME_SIZE) >= PF_TAG_NAME_SIZE) {
1019                                         yyerror("tag too long, max %u chars",
1020                                             PF_TAG_NAME_SIZE - 1);
1021                                         YYERROR;
1022                                 }
1023                         r.match_tag_not = $9.match_tag_not;
1024                         if ($9.marker & FOM_PRIO) {
1025                                 if ($9.prio == 0)
1026                                         r.prio = PF_PRIO_ZERO;
1027                                 else
1028                                         r.prio = $9.prio;
1029                         }
1030                         if ($9.marker & FOM_SETPRIO) {
1031                                 r.set_prio[0] = $9.set_prio[0];
1032                                 r.set_prio[1] = $9.set_prio[1];
1033                                 r.scrub_flags |= PFSTATE_SETPRIO;
1034                         }
1035
1036                         decide_address_family($8.src.host, &r.af);
1037                         decide_address_family($8.dst.host, &r.af);
1038
1039                         expand_rule(&r, $5, NULL, $7, $8.src_os,
1040                             $8.src.host, $8.src.port, $8.dst.host, $8.dst.port,
1041                             $9.uid, $9.gid, $9.icmpspec,
1042                             pf->astack[pf->asd + 1] ? pf->alast->name : $2);
1043                         free($2);
1044                         pf->astack[pf->asd + 1] = NULL;
1045                 }
1046                 | NATANCHOR string interface af proto fromto rtable {
1047                         struct pfctl_rule       r;
1048
1049                         if (check_rulestate(PFCTL_STATE_NAT)) {
1050                                 free($2);
1051                                 YYERROR;
1052                         }
1053
1054                         memset(&r, 0, sizeof(r));
1055                         r.action = PF_NAT;
1056                         r.af = $4;
1057                         r.rtableid = $7;
1058
1059                         decide_address_family($6.src.host, &r.af);
1060                         decide_address_family($6.dst.host, &r.af);
1061
1062                         expand_rule(&r, $3, NULL, $5, $6.src_os,
1063                             $6.src.host, $6.src.port, $6.dst.host, $6.dst.port,
1064                             0, 0, 0, $2);
1065                         free($2);
1066                 }
1067                 | RDRANCHOR string interface af proto fromto rtable {
1068                         struct pfctl_rule       r;
1069
1070                         if (check_rulestate(PFCTL_STATE_NAT)) {
1071                                 free($2);
1072                                 YYERROR;
1073                         }
1074
1075                         memset(&r, 0, sizeof(r));
1076                         r.action = PF_RDR;
1077                         r.af = $4;
1078                         r.rtableid = $7;
1079
1080                         decide_address_family($6.src.host, &r.af);
1081                         decide_address_family($6.dst.host, &r.af);
1082
1083                         if ($6.src.port != NULL) {
1084                                 yyerror("source port parameter not supported"
1085                                     " in rdr-anchor");
1086                                 YYERROR;
1087                         }
1088                         if ($6.dst.port != NULL) {
1089                                 if ($6.dst.port->next != NULL) {
1090                                         yyerror("destination port list "
1091                                             "expansion not supported in "
1092                                             "rdr-anchor");
1093                                         YYERROR;
1094                                 } else if ($6.dst.port->op != PF_OP_EQ) {
1095                                         yyerror("destination port operators"
1096                                             " not supported in rdr-anchor");
1097                                         YYERROR;
1098                                 }
1099                                 r.dst.port[0] = $6.dst.port->port[0];
1100                                 r.dst.port[1] = $6.dst.port->port[1];
1101                                 r.dst.port_op = $6.dst.port->op;
1102                         }
1103
1104                         expand_rule(&r, $3, NULL, $5, $6.src_os,
1105                             $6.src.host, $6.src.port, $6.dst.host, $6.dst.port,
1106                             0, 0, 0, $2);
1107                         free($2);
1108                 }
1109                 | BINATANCHOR string interface af proto fromto rtable {
1110                         struct pfctl_rule       r;
1111
1112                         if (check_rulestate(PFCTL_STATE_NAT)) {
1113                                 free($2);
1114                                 YYERROR;
1115                         }
1116
1117                         memset(&r, 0, sizeof(r));
1118                         r.action = PF_BINAT;
1119                         r.af = $4;
1120                         r.rtableid = $7;
1121                         if ($5 != NULL) {
1122                                 if ($5->next != NULL) {
1123                                         yyerror("proto list expansion"
1124                                             " not supported in binat-anchor");
1125                                         YYERROR;
1126                                 }
1127                                 r.proto = $5->proto;
1128                                 free($5);
1129                         }
1130
1131                         if ($6.src.host != NULL || $6.src.port != NULL ||
1132                             $6.dst.host != NULL || $6.dst.port != NULL) {
1133                                 yyerror("fromto parameter not supported"
1134                                     " in binat-anchor");
1135                                 YYERROR;
1136                         }
1137
1138                         decide_address_family($6.src.host, &r.af);
1139                         decide_address_family($6.dst.host, &r.af);
1140
1141                         pfctl_append_rule(pf, &r, $2);
1142                         free($2);
1143                 }
1144                 ;
1145
1146 loadrule        : LOAD ANCHOR string FROM string        {
1147                         struct loadanchors      *loadanchor;
1148
1149                         if (strlen(pf->anchor->name) + 1 +
1150                             strlen($3) >= MAXPATHLEN) {
1151                                 yyerror("anchorname %s too long, max %u\n",
1152                                     $3, MAXPATHLEN - 1);
1153                                 free($3);
1154                                 YYERROR;
1155                         }
1156                         loadanchor = calloc(1, sizeof(struct loadanchors));
1157                         if (loadanchor == NULL)
1158                                 err(1, "loadrule: calloc");
1159                         if ((loadanchor->anchorname = malloc(MAXPATHLEN)) ==
1160                             NULL)
1161                                 err(1, "loadrule: malloc");
1162                         if (pf->anchor->name[0])
1163                                 snprintf(loadanchor->anchorname, MAXPATHLEN,
1164                                     "%s/%s", pf->anchor->name, $3);
1165                         else
1166                                 strlcpy(loadanchor->anchorname, $3, MAXPATHLEN);
1167                         if ((loadanchor->filename = strdup($5)) == NULL)
1168                                 err(1, "loadrule: strdup");
1169
1170                         TAILQ_INSERT_TAIL(&loadanchorshead, loadanchor,
1171                             entries);
1172
1173                         free($3);
1174                         free($5);
1175                 };
1176
1177 scrubaction     : no SCRUB {
1178                         $$.b2 = $$.w = 0;
1179                         if ($1)
1180                                 $$.b1 = PF_NOSCRUB;
1181                         else
1182                                 $$.b1 = PF_SCRUB;
1183                 }
1184                 ;
1185
1186 etherrule       : ETHER action dir quick interface etherproto etherfromto l3fromto etherfilter_opts
1187                 {
1188                         struct pfctl_eth_rule   r;
1189
1190                         bzero(&r, sizeof(r));
1191
1192                         if (check_rulestate(PFCTL_STATE_ETHER))
1193                                 YYERROR;
1194
1195                         r.action = $2.b1;
1196                         r.direction = $3;
1197                         r.quick = $4.quick;
1198                         if ($9.tag != NULL)
1199                                 memcpy(&r.tagname, $9.tag, sizeof(r.tagname));
1200                         if ($9.match_tag)
1201                                 if (strlcpy(r.match_tagname, $9.match_tag,
1202                                     PF_TAG_NAME_SIZE) >= PF_TAG_NAME_SIZE) {
1203                                         yyerror("tag too long, max %u chars",
1204                                             PF_TAG_NAME_SIZE - 1);
1205                                         YYERROR;
1206                                 }
1207                         r.match_tag_not = $9.match_tag_not;
1208                         if ($9.queues.qname != NULL)
1209                                 memcpy(&r.qname, $9.queues.qname, sizeof(r.qname));
1210                         r.dnpipe = $9.dnpipe;
1211                         r.dnflags = $9.free_flags;
1212
1213                         expand_eth_rule(&r, $5, $6, $7.src, $7.dst,
1214                             $8.src.host, $8.dst.host, "");
1215                 }
1216                 ;
1217
1218 etherpfa_anchorlist     : /* empty */
1219                 | etherpfa_anchorlist '\n'
1220                 | etherpfa_anchorlist etherrule '\n'
1221                 | etherpfa_anchorlist etheranchorrule '\n'
1222                 ;
1223
1224 etherpfa_anchor : '{'
1225                 {
1226                         char ta[PF_ANCHOR_NAME_SIZE];
1227                         struct pfctl_eth_ruleset *rs;
1228
1229                         /* steping into a brace anchor */
1230                         pf->asd++;
1231                         pf->bn++;
1232
1233                         /* create a holding ruleset in the root */
1234                         snprintf(ta, PF_ANCHOR_NAME_SIZE, "_%d", pf->bn);
1235                         rs = pf_find_or_create_eth_ruleset(ta);
1236                         if (rs == NULL)
1237                                 err(1, "etherpfa_anchor: pf_find_or_create_eth_ruleset");
1238                         pf->eastack[pf->asd] = rs->anchor;
1239                         pf->eanchor = rs->anchor;
1240                 } '\n' etherpfa_anchorlist '}'
1241                 {
1242                         pf->ealast = pf->eanchor;
1243                         pf->asd--;
1244                         pf->eanchor = pf->eastack[pf->asd];
1245                 }
1246                 | /* empty */
1247                 ;
1248
1249 etheranchorrule : ETHER ANCHOR anchorname dir quick interface etherproto etherfromto l3fromto etherpfa_anchor
1250                 {
1251                         struct pfctl_eth_rule   r;
1252
1253                         if (check_rulestate(PFCTL_STATE_ETHER)) {
1254                                 free($3);
1255                                 YYERROR;
1256                         }
1257
1258                         if ($3 && ($3[0] == '_' || strstr($3, "/_") != NULL)) {
1259                                 free($3);
1260                                 yyerror("anchor names beginning with '_' "
1261                                     "are reserved for internal use");
1262                                 YYERROR;
1263                         }
1264
1265                         memset(&r, 0, sizeof(r));
1266                         if (pf->eastack[pf->asd + 1]) {
1267                                 /* move inline rules into relative location */
1268                                 pfctl_eth_anchor_setup(pf, &r,
1269                                     &pf->eastack[pf->asd]->ruleset,
1270                                     $3 ? $3 : pf->ealast->name);
1271                                 if (r.anchor == NULL)
1272                                         err(1, "etheranchorrule: unable to "
1273                                             "create ruleset");
1274
1275                                 if (pf->ealast != r.anchor) {
1276                                         if (r.anchor->match) {
1277                                                 yyerror("inline anchor '%s' "
1278                                                     "already exists",
1279                                                     r.anchor->name);
1280                                                 YYERROR;
1281                                         }
1282                                         mv_eth_rules(&pf->ealast->ruleset,
1283                                             &r.anchor->ruleset);
1284                                 }
1285                                 pf_remove_if_empty_eth_ruleset(&pf->ealast->ruleset);
1286                                 pf->ealast = r.anchor;
1287                         } else {
1288                                 if (!$3) {
1289                                         yyerror("anchors without explicit "
1290                                             "rules must specify a name");
1291                                         YYERROR;
1292                                 }
1293                         }
1294
1295                         r.direction = $4;
1296                         r.quick = $5.quick;
1297
1298                         expand_eth_rule(&r, $6, $7, $8.src, $8.dst,
1299                             $9.src.host, $9.dst.host,
1300                             pf->eastack[pf->asd + 1] ? pf->ealast->name : $3);
1301
1302                         free($3);
1303                         pf->eastack[pf->asd + 1] = NULL;
1304                 }
1305                 ;
1306
1307 etherfilter_opts        :       {
1308                                 bzero(&filter_opts, sizeof filter_opts);
1309                         }
1310                     etherfilter_opts_l
1311                         { $$ = filter_opts; }
1312                 | /* empty */   {
1313                         bzero(&filter_opts, sizeof filter_opts);
1314                         $$ = filter_opts;
1315                 }
1316                 ;
1317
1318 etherfilter_opts_l      : etherfilter_opts_l etherfilter_opt
1319                         | etherfilter_opt
1320
1321 etherfilter_opt : etherqname    {
1322                         if (filter_opts.queues.qname) {
1323                                 yyerror("queue cannot be redefined");
1324                                 YYERROR;
1325                         }
1326                         filter_opts.queues = $1;
1327                 }
1328                 | TAG string                            {
1329                         filter_opts.tag = $2;
1330                 }
1331                 | not TAGGED string                     {
1332                         filter_opts.match_tag = $3;
1333                         filter_opts.match_tag_not = $1;
1334                 }
1335                 | DNPIPE number {
1336                         filter_opts.dnpipe = $2;
1337                         filter_opts.free_flags |= PFRULE_DN_IS_PIPE;
1338                 }
1339                 | DNQUEUE number {
1340                         filter_opts.dnpipe = $2;
1341                         filter_opts.free_flags |= PFRULE_DN_IS_QUEUE;
1342                 }
1343                 ;
1344
1345 scrubrule       : scrubaction dir logquick interface af proto fromto scrub_opts
1346                 {
1347                         struct pfctl_rule       r;
1348
1349                         if (check_rulestate(PFCTL_STATE_SCRUB))
1350                                 YYERROR;
1351
1352                         memset(&r, 0, sizeof(r));
1353
1354                         r.action = $1.b1;
1355                         r.direction = $2;
1356
1357                         r.log = $3.log;
1358                         r.logif = $3.logif;
1359                         if ($3.quick) {
1360                                 yyerror("scrub rules do not support 'quick'");
1361                                 YYERROR;
1362                         }
1363
1364                         r.af = $5;
1365                         if ($8.nodf)
1366                                 r.rule_flag |= PFRULE_NODF;
1367                         if ($8.randomid)
1368                                 r.rule_flag |= PFRULE_RANDOMID;
1369                         if ($8.reassemble_tcp) {
1370                                 if (r.direction != PF_INOUT) {
1371                                         yyerror("reassemble tcp rules can not "
1372                                             "specify direction");
1373                                         YYERROR;
1374                                 }
1375                                 r.rule_flag |= PFRULE_REASSEMBLE_TCP;
1376                         }
1377                         if ($8.minttl)
1378                                 r.min_ttl = $8.minttl;
1379                         if ($8.maxmss)
1380                                 r.max_mss = $8.maxmss;
1381                         if ($8.marker & SOM_SETTOS) {
1382                                 r.rule_flag |= PFRULE_SET_TOS;
1383                                 r.set_tos = $8.settos;
1384                         }
1385                         if ($8.fragcache)
1386                                 r.rule_flag |= $8.fragcache;
1387                         if ($8.match_tag)
1388                                 if (strlcpy(r.match_tagname, $8.match_tag,
1389                                     PF_TAG_NAME_SIZE) >= PF_TAG_NAME_SIZE) {
1390                                         yyerror("tag too long, max %u chars",
1391                                             PF_TAG_NAME_SIZE - 1);
1392                                         YYERROR;
1393                                 }
1394                         r.match_tag_not = $8.match_tag_not;
1395                         r.rtableid = $8.rtableid;
1396
1397                         expand_rule(&r, $4, NULL, $6, $7.src_os,
1398                             $7.src.host, $7.src.port, $7.dst.host, $7.dst.port,
1399                             NULL, NULL, NULL, "");
1400                 }
1401                 ;
1402
1403 scrub_opts      :       {
1404                                 bzero(&scrub_opts, sizeof scrub_opts);
1405                                 scrub_opts.rtableid = -1;
1406                         }
1407                     scrub_opts_l
1408                         { $$ = scrub_opts; }
1409                 | /* empty */ {
1410                         bzero(&scrub_opts, sizeof scrub_opts);
1411                         scrub_opts.rtableid = -1;
1412                         $$ = scrub_opts;
1413                 }
1414                 ;
1415
1416 scrub_opts_l    : scrub_opts_l scrub_opt
1417                 | scrub_opt
1418                 ;
1419
1420 scrub_opt       : NODF  {
1421                         if (scrub_opts.nodf) {
1422                                 yyerror("no-df cannot be respecified");
1423                                 YYERROR;
1424                         }
1425                         scrub_opts.nodf = 1;
1426                 }
1427                 | MINTTL NUMBER {
1428                         if (scrub_opts.marker & SOM_MINTTL) {
1429                                 yyerror("min-ttl cannot be respecified");
1430                                 YYERROR;
1431                         }
1432                         if ($2 < 0 || $2 > 255) {
1433                                 yyerror("illegal min-ttl value %d", $2);
1434                                 YYERROR;
1435                         }
1436                         scrub_opts.marker |= SOM_MINTTL;
1437                         scrub_opts.minttl = $2;
1438                 }
1439                 | MAXMSS NUMBER {
1440                         if (scrub_opts.marker & SOM_MAXMSS) {
1441                                 yyerror("max-mss cannot be respecified");
1442                                 YYERROR;
1443                         }
1444                         if ($2 < 0 || $2 > 65535) {
1445                                 yyerror("illegal max-mss value %d", $2);
1446                                 YYERROR;
1447                         }
1448                         scrub_opts.marker |= SOM_MAXMSS;
1449                         scrub_opts.maxmss = $2;
1450                 }
1451                 | SETTOS tos {
1452                         if (scrub_opts.marker & SOM_SETTOS) {
1453                                 yyerror("set-tos cannot be respecified");
1454                                 YYERROR;
1455                         }
1456                         scrub_opts.marker |= SOM_SETTOS;
1457                         scrub_opts.settos = $2;
1458                 }
1459                 | fragcache {
1460                         if (scrub_opts.marker & SOM_FRAGCACHE) {
1461                                 yyerror("fragcache cannot be respecified");
1462                                 YYERROR;
1463                         }
1464                         scrub_opts.marker |= SOM_FRAGCACHE;
1465                         scrub_opts.fragcache = $1;
1466                 }
1467                 | REASSEMBLE STRING {
1468                         if (strcasecmp($2, "tcp") != 0) {
1469                                 yyerror("scrub reassemble supports only tcp, "
1470                                     "not '%s'", $2);
1471                                 free($2);
1472                                 YYERROR;
1473                         }
1474                         free($2);
1475                         if (scrub_opts.reassemble_tcp) {
1476                                 yyerror("reassemble tcp cannot be respecified");
1477                                 YYERROR;
1478                         }
1479                         scrub_opts.reassemble_tcp = 1;
1480                 }
1481                 | RANDOMID {
1482                         if (scrub_opts.randomid) {
1483                                 yyerror("random-id cannot be respecified");
1484                                 YYERROR;
1485                         }
1486                         scrub_opts.randomid = 1;
1487                 }
1488                 | RTABLE NUMBER                         {
1489                         if ($2 < 0 || $2 > rt_tableid_max()) {
1490                                 yyerror("invalid rtable id");
1491                                 YYERROR;
1492                         }
1493                         scrub_opts.rtableid = $2;
1494                 }
1495                 | not TAGGED string                     {
1496                         scrub_opts.match_tag = $3;
1497                         scrub_opts.match_tag_not = $1;
1498                 }
1499                 ;
1500
1501 fragcache       : FRAGMENT REASSEMBLE   { $$ = 0; /* default */ }
1502                 | FRAGMENT FRAGCROP     { $$ = 0; }
1503                 | FRAGMENT FRAGDROP     { $$ = 0; }
1504                 ;
1505
1506 antispoof       : ANTISPOOF logquick antispoof_ifspc af antispoof_opts {
1507                         struct pfctl_rule        r;
1508                         struct node_host        *h = NULL, *hh;
1509                         struct node_if          *i, *j;
1510
1511                         if (check_rulestate(PFCTL_STATE_FILTER))
1512                                 YYERROR;
1513
1514                         for (i = $3; i; i = i->next) {
1515                                 bzero(&r, sizeof(r));
1516
1517                                 r.action = PF_DROP;
1518                                 r.direction = PF_IN;
1519                                 r.log = $2.log;
1520                                 r.logif = $2.logif;
1521                                 r.quick = $2.quick;
1522                                 r.af = $4;
1523                                 r.ridentifier = $5.ridentifier;
1524                                 if (rule_label(&r, $5.label))
1525                                         YYERROR;
1526                                 r.rtableid = $5.rtableid;
1527                                 j = calloc(1, sizeof(struct node_if));
1528                                 if (j == NULL)
1529                                         err(1, "antispoof: calloc");
1530                                 if (strlcpy(j->ifname, i->ifname,
1531                                     sizeof(j->ifname)) >= sizeof(j->ifname)) {
1532                                         free(j);
1533                                         yyerror("interface name too long");
1534                                         YYERROR;
1535                                 }
1536                                 j->not = 1;
1537                                 if (i->dynamic) {
1538                                         h = calloc(1, sizeof(*h));
1539                                         if (h == NULL)
1540                                                 err(1, "address: calloc");
1541                                         h->addr.type = PF_ADDR_DYNIFTL;
1542                                         set_ipmask(h, 128);
1543                                         if (strlcpy(h->addr.v.ifname, i->ifname,
1544                                             sizeof(h->addr.v.ifname)) >=
1545                                             sizeof(h->addr.v.ifname)) {
1546                                                 free(h);
1547                                                 yyerror(
1548                                                     "interface name too long");
1549                                                 YYERROR;
1550                                         }
1551                                         hh = malloc(sizeof(*hh));
1552                                         if (hh == NULL)
1553                                                  err(1, "address: malloc");
1554                                         bcopy(h, hh, sizeof(*hh));
1555                                         h->addr.iflags = PFI_AFLAG_NETWORK;
1556                                 } else {
1557                                         h = ifa_lookup(j->ifname,
1558                                             PFI_AFLAG_NETWORK);
1559                                         hh = NULL;
1560                                 }
1561
1562                                 if (h != NULL)
1563                                         expand_rule(&r, j, NULL, NULL, NULL, h,
1564                                             NULL, NULL, NULL, NULL, NULL,
1565                                             NULL, "");
1566
1567                                 if ((i->ifa_flags & IFF_LOOPBACK) == 0) {
1568                                         bzero(&r, sizeof(r));
1569
1570                                         r.action = PF_DROP;
1571                                         r.direction = PF_IN;
1572                                         r.log = $2.log;
1573                                         r.logif = $2.logif;
1574                                         r.quick = $2.quick;
1575                                         r.af = $4;
1576                                         r.ridentifier = $5.ridentifier;
1577                                         if (rule_label(&r, $5.label))
1578                                                 YYERROR;
1579                                         r.rtableid = $5.rtableid;
1580                                         if (hh != NULL)
1581                                                 h = hh;
1582                                         else
1583                                                 h = ifa_lookup(i->ifname, 0);
1584                                         if (h != NULL)
1585                                                 expand_rule(&r, NULL, NULL,
1586                                                     NULL, NULL, h, NULL, NULL,
1587                                                     NULL, NULL, NULL, NULL, "");
1588                                 } else
1589                                         free(hh);
1590                         }
1591                         for (int i = 0; i < PF_RULE_MAX_LABEL_COUNT; i++)
1592                                 free($5.label[i]);
1593                 }
1594                 ;
1595
1596 antispoof_ifspc : FOR antispoof_if                      { $$ = $2; }
1597                 | FOR '{' optnl antispoof_iflst '}'     { $$ = $4; }
1598                 ;
1599
1600 antispoof_iflst : antispoof_if optnl                    { $$ = $1; }
1601                 | antispoof_iflst comma antispoof_if optnl {
1602                         $1->tail->next = $3;
1603                         $1->tail = $3;
1604                         $$ = $1;
1605                 }
1606                 ;
1607
1608 antispoof_if    : if_item                               { $$ = $1; }
1609                 | '(' if_item ')'                       {
1610                         $2->dynamic = 1;
1611                         $$ = $2;
1612                 }
1613                 ;
1614
1615 antispoof_opts  :       {
1616                                 bzero(&antispoof_opts, sizeof antispoof_opts);
1617                                 antispoof_opts.rtableid = -1;
1618                         }
1619                     antispoof_opts_l
1620                         { $$ = antispoof_opts; }
1621                 | /* empty */   {
1622                         bzero(&antispoof_opts, sizeof antispoof_opts);
1623                         antispoof_opts.rtableid = -1;
1624                         $$ = antispoof_opts;
1625                 }
1626                 ;
1627
1628 antispoof_opts_l        : antispoof_opts_l antispoof_opt
1629                         | antispoof_opt
1630                         ;
1631
1632 antispoof_opt   : label {
1633                         if (antispoof_opts.labelcount >= PF_RULE_MAX_LABEL_COUNT) {
1634                                 yyerror("label can only be used %d times", PF_RULE_MAX_LABEL_COUNT);
1635                                 YYERROR;
1636                         }
1637                         antispoof_opts.label[antispoof_opts.labelcount++] = $1;
1638                 }
1639                 | RIDENTIFIER number {
1640                         antispoof_opts.ridentifier = $2;
1641                 }
1642                 | RTABLE NUMBER                         {
1643                         if ($2 < 0 || $2 > rt_tableid_max()) {
1644                                 yyerror("invalid rtable id");
1645                                 YYERROR;
1646                         }
1647                         antispoof_opts.rtableid = $2;
1648                 }
1649                 ;
1650
1651 not             : '!'           { $$ = 1; }
1652                 | /* empty */   { $$ = 0; }
1653                 ;
1654
1655 tabledef        : TABLE '<' STRING '>' table_opts {
1656                         struct node_host         *h, *nh;
1657                         struct node_tinit        *ti, *nti;
1658
1659                         if (strlen($3) >= PF_TABLE_NAME_SIZE) {
1660                                 yyerror("table name too long, max %d chars",
1661                                     PF_TABLE_NAME_SIZE - 1);
1662                                 free($3);
1663                                 YYERROR;
1664                         }
1665                         if (pf->loadopt & PFCTL_FLAG_TABLE)
1666                                 if (process_tabledef($3, &$5)) {
1667                                         free($3);
1668                                         YYERROR;
1669                                 }
1670                         free($3);
1671                         for (ti = SIMPLEQ_FIRST(&$5.init_nodes);
1672                             ti != SIMPLEQ_END(&$5.init_nodes); ti = nti) {
1673                                 if (ti->file)
1674                                         free(ti->file);
1675                                 for (h = ti->host; h != NULL; h = nh) {
1676                                         nh = h->next;
1677                                         free(h);
1678                                 }
1679                                 nti = SIMPLEQ_NEXT(ti, entries);
1680                                 free(ti);
1681                         }
1682                 }
1683                 ;
1684
1685 table_opts      :       {
1686                         bzero(&table_opts, sizeof table_opts);
1687                         SIMPLEQ_INIT(&table_opts.init_nodes);
1688                 }
1689                     table_opts_l
1690                         { $$ = table_opts; }
1691                 | /* empty */
1692                         {
1693                         bzero(&table_opts, sizeof table_opts);
1694                         SIMPLEQ_INIT(&table_opts.init_nodes);
1695                         $$ = table_opts;
1696                 }
1697                 ;
1698
1699 table_opts_l    : table_opts_l table_opt
1700                 | table_opt
1701                 ;
1702
1703 table_opt       : STRING                {
1704                         if (!strcmp($1, "const"))
1705                                 table_opts.flags |= PFR_TFLAG_CONST;
1706                         else if (!strcmp($1, "persist"))
1707                                 table_opts.flags |= PFR_TFLAG_PERSIST;
1708                         else if (!strcmp($1, "counters"))
1709                                 table_opts.flags |= PFR_TFLAG_COUNTERS;
1710                         else {
1711                                 yyerror("invalid table option '%s'", $1);
1712                                 free($1);
1713                                 YYERROR;
1714                         }
1715                         free($1);
1716                 }
1717                 | '{' optnl '}'         { table_opts.init_addr = 1; }
1718                 | '{' optnl host_list '}'       {
1719                         struct node_host        *n;
1720                         struct node_tinit       *ti;
1721
1722                         for (n = $3; n != NULL; n = n->next) {
1723                                 switch (n->addr.type) {
1724                                 case PF_ADDR_ADDRMASK:
1725                                         continue; /* ok */
1726                                 case PF_ADDR_RANGE:
1727                                         yyerror("address ranges are not "
1728                                             "permitted inside tables");
1729                                         break;
1730                                 case PF_ADDR_DYNIFTL:
1731                                         yyerror("dynamic addresses are not "
1732                                             "permitted inside tables");
1733                                         break;
1734                                 case PF_ADDR_TABLE:
1735                                         yyerror("tables cannot contain tables");
1736                                         break;
1737                                 case PF_ADDR_NOROUTE:
1738                                         yyerror("\"no-route\" is not permitted "
1739                                             "inside tables");
1740                                         break;
1741                                 case PF_ADDR_URPFFAILED:
1742                                         yyerror("\"urpf-failed\" is not "
1743                                             "permitted inside tables");
1744                                         break;
1745                                 default:
1746                                         yyerror("unknown address type %d",
1747                                             n->addr.type);
1748                                 }
1749                                 YYERROR;
1750                         }
1751                         if (!(ti = calloc(1, sizeof(*ti))))
1752                                 err(1, "table_opt: calloc");
1753                         ti->host = $3;
1754                         SIMPLEQ_INSERT_TAIL(&table_opts.init_nodes, ti,
1755                             entries);
1756                         table_opts.init_addr = 1;
1757                 }
1758                 | FILENAME STRING       {
1759                         struct node_tinit       *ti;
1760
1761                         if (!(ti = calloc(1, sizeof(*ti))))
1762                                 err(1, "table_opt: calloc");
1763                         ti->file = $2;
1764                         SIMPLEQ_INSERT_TAIL(&table_opts.init_nodes, ti,
1765                             entries);
1766                         table_opts.init_addr = 1;
1767                 }
1768                 ;
1769
1770 altqif          : ALTQ interface queue_opts QUEUE qassign {
1771                         struct pf_altq  a;
1772
1773                         if (check_rulestate(PFCTL_STATE_QUEUE))
1774                                 YYERROR;
1775
1776                         memset(&a, 0, sizeof(a));
1777                         if ($3.scheduler.qtype == ALTQT_NONE) {
1778                                 yyerror("no scheduler specified!");
1779                                 YYERROR;
1780                         }
1781                         a.scheduler = $3.scheduler.qtype;
1782                         a.qlimit = $3.qlimit;
1783                         a.tbrsize = $3.tbrsize;
1784                         if ($5 == NULL && $3.scheduler.qtype != ALTQT_CODEL) {
1785                                 yyerror("no child queues specified");
1786                                 YYERROR;
1787                         }
1788                         if (expand_altq(&a, $2, $5, $3.queue_bwspec,
1789                             &$3.scheduler))
1790                                 YYERROR;
1791                 }
1792                 ;
1793
1794 queuespec       : QUEUE STRING interface queue_opts qassign {
1795                         struct pf_altq  a;
1796
1797                         if (check_rulestate(PFCTL_STATE_QUEUE)) {
1798                                 free($2);
1799                                 YYERROR;
1800                         }
1801
1802                         memset(&a, 0, sizeof(a));
1803
1804                         if (strlcpy(a.qname, $2, sizeof(a.qname)) >=
1805                             sizeof(a.qname)) {
1806                                 yyerror("queue name too long (max "
1807                                     "%d chars)", PF_QNAME_SIZE-1);
1808                                 free($2);
1809                                 YYERROR;
1810                         }
1811                         free($2);
1812                         if ($4.tbrsize) {
1813                                 yyerror("cannot specify tbrsize for queue");
1814                                 YYERROR;
1815                         }
1816                         if ($4.priority > 255) {
1817                                 yyerror("priority out of range: max 255");
1818                                 YYERROR;
1819                         }
1820                         a.priority = $4.priority;
1821                         a.qlimit = $4.qlimit;
1822                         a.scheduler = $4.scheduler.qtype;
1823                         if (expand_queue(&a, $3, $5, $4.queue_bwspec,
1824                             &$4.scheduler)) {
1825                                 yyerror("errors in queue definition");
1826                                 YYERROR;
1827                         }
1828                 }
1829                 ;
1830
1831 queue_opts      :       {
1832                         bzero(&queue_opts, sizeof queue_opts);
1833                         queue_opts.priority = DEFAULT_PRIORITY;
1834                         queue_opts.qlimit = DEFAULT_QLIMIT;
1835                         queue_opts.scheduler.qtype = ALTQT_NONE;
1836                         queue_opts.queue_bwspec.bw_percent = 100;
1837                 }
1838                     queue_opts_l
1839                         { $$ = queue_opts; }
1840                 | /* empty */ {
1841                         bzero(&queue_opts, sizeof queue_opts);
1842                         queue_opts.priority = DEFAULT_PRIORITY;
1843                         queue_opts.qlimit = DEFAULT_QLIMIT;
1844                         queue_opts.scheduler.qtype = ALTQT_NONE;
1845                         queue_opts.queue_bwspec.bw_percent = 100;
1846                         $$ = queue_opts;
1847                 }
1848                 ;
1849
1850 queue_opts_l    : queue_opts_l queue_opt
1851                 | queue_opt
1852                 ;
1853
1854 queue_opt       : BANDWIDTH bandwidth   {
1855                         if (queue_opts.marker & QOM_BWSPEC) {
1856                                 yyerror("bandwidth cannot be respecified");
1857                                 YYERROR;
1858                         }
1859                         queue_opts.marker |= QOM_BWSPEC;
1860                         queue_opts.queue_bwspec = $2;
1861                 }
1862                 | PRIORITY NUMBER       {
1863                         if (queue_opts.marker & QOM_PRIORITY) {
1864                                 yyerror("priority cannot be respecified");
1865                                 YYERROR;
1866                         }
1867                         if ($2 < 0 || $2 > 255) {
1868                                 yyerror("priority out of range: max 255");
1869                                 YYERROR;
1870                         }
1871                         queue_opts.marker |= QOM_PRIORITY;
1872                         queue_opts.priority = $2;
1873                 }
1874                 | QLIMIT NUMBER {
1875                         if (queue_opts.marker & QOM_QLIMIT) {
1876                                 yyerror("qlimit cannot be respecified");
1877                                 YYERROR;
1878                         }
1879                         if ($2 < 0 || $2 > 65535) {
1880                                 yyerror("qlimit out of range: max 65535");
1881                                 YYERROR;
1882                         }
1883                         queue_opts.marker |= QOM_QLIMIT;
1884                         queue_opts.qlimit = $2;
1885                 }
1886                 | scheduler     {
1887                         if (queue_opts.marker & QOM_SCHEDULER) {
1888                                 yyerror("scheduler cannot be respecified");
1889                                 YYERROR;
1890                         }
1891                         queue_opts.marker |= QOM_SCHEDULER;
1892                         queue_opts.scheduler = $1;
1893                 }
1894                 | TBRSIZE NUMBER        {
1895                         if (queue_opts.marker & QOM_TBRSIZE) {
1896                                 yyerror("tbrsize cannot be respecified");
1897                                 YYERROR;
1898                         }
1899                         if ($2 < 0 || $2 > UINT_MAX) {
1900                                 yyerror("tbrsize too big: max %u", UINT_MAX);
1901                                 YYERROR;
1902                         }
1903                         queue_opts.marker |= QOM_TBRSIZE;
1904                         queue_opts.tbrsize = $2;
1905                 }
1906                 ;
1907
1908 bandwidth       : STRING {
1909                         double   bps;
1910                         char    *cp;
1911
1912                         $$.bw_percent = 0;
1913
1914                         bps = strtod($1, &cp);
1915                         if (cp != NULL) {
1916                                 if (strlen(cp) > 1) {
1917                                         char *cu = cp + 1;
1918                                         if (!strcmp(cu, "Bit") ||
1919                                             !strcmp(cu, "B") ||
1920                                             !strcmp(cu, "bit") ||
1921                                             !strcmp(cu, "b")) {
1922                                                 *cu = 0;
1923                                         }
1924                                 }
1925                                 if (!strcmp(cp, "b"))
1926                                         ; /* nothing */
1927                                 else if (!strcmp(cp, "K"))
1928                                         bps *= 1000;
1929                                 else if (!strcmp(cp, "M"))
1930                                         bps *= 1000 * 1000;
1931                                 else if (!strcmp(cp, "G"))
1932                                         bps *= 1000 * 1000 * 1000;
1933                                 else if (!strcmp(cp, "%")) {
1934                                         if (bps < 0 || bps > 100) {
1935                                                 yyerror("bandwidth spec "
1936                                                     "out of range");
1937                                                 free($1);
1938                                                 YYERROR;
1939                                         }
1940                                         $$.bw_percent = bps;
1941                                         bps = 0;
1942                                 } else {
1943                                         yyerror("unknown unit %s", cp);
1944                                         free($1);
1945                                         YYERROR;
1946                                 }
1947                         }
1948                         free($1);
1949                         $$.bw_absolute = (u_int64_t)bps;
1950                 }
1951                 | NUMBER {
1952                         if ($1 < 0 || $1 >= LLONG_MAX) {
1953                                 yyerror("bandwidth number too big");
1954                                 YYERROR;
1955                         }
1956                         $$.bw_percent = 0;
1957                         $$.bw_absolute = $1;
1958                 }
1959                 ;
1960
1961 scheduler       : CBQ                           {
1962                         $$.qtype = ALTQT_CBQ;
1963                         $$.data.cbq_opts.flags = 0;
1964                 }
1965                 | CBQ '(' cbqflags_list ')'     {
1966                         $$.qtype = ALTQT_CBQ;
1967                         $$.data.cbq_opts.flags = $3;
1968                 }
1969                 | PRIQ                          {
1970                         $$.qtype = ALTQT_PRIQ;
1971                         $$.data.priq_opts.flags = 0;
1972                 }
1973                 | PRIQ '(' priqflags_list ')'   {
1974                         $$.qtype = ALTQT_PRIQ;
1975                         $$.data.priq_opts.flags = $3;
1976                 }
1977                 | HFSC                          {
1978                         $$.qtype = ALTQT_HFSC;
1979                         bzero(&$$.data.hfsc_opts,
1980                             sizeof(struct node_hfsc_opts));
1981                 }
1982                 | HFSC '(' hfsc_opts ')'        {
1983                         $$.qtype = ALTQT_HFSC;
1984                         $$.data.hfsc_opts = $3;
1985                 }
1986                 | FAIRQ                         {
1987                         $$.qtype = ALTQT_FAIRQ;
1988                         bzero(&$$.data.fairq_opts,
1989                                 sizeof(struct node_fairq_opts));
1990                 }
1991                 | FAIRQ '(' fairq_opts ')'      {
1992                         $$.qtype = ALTQT_FAIRQ;
1993                         $$.data.fairq_opts = $3;
1994                 }
1995                 | CODEL                         {
1996                         $$.qtype = ALTQT_CODEL;
1997                         bzero(&$$.data.codel_opts,
1998                                 sizeof(struct codel_opts));
1999                 }
2000                 | CODEL '(' codel_opts ')'      {
2001                         $$.qtype = ALTQT_CODEL;
2002                         $$.data.codel_opts = $3;
2003                 }
2004                 ;
2005
2006 cbqflags_list   : cbqflags_item                         { $$ |= $1; }
2007                 | cbqflags_list comma cbqflags_item     { $$ |= $3; }
2008                 ;
2009
2010 cbqflags_item   : STRING        {
2011                         if (!strcmp($1, "default"))
2012                                 $$ = CBQCLF_DEFCLASS;
2013                         else if (!strcmp($1, "borrow"))
2014                                 $$ = CBQCLF_BORROW;
2015                         else if (!strcmp($1, "red"))
2016                                 $$ = CBQCLF_RED;
2017                         else if (!strcmp($1, "ecn"))
2018                                 $$ = CBQCLF_RED|CBQCLF_ECN;
2019                         else if (!strcmp($1, "rio"))
2020                                 $$ = CBQCLF_RIO;
2021                         else if (!strcmp($1, "codel"))
2022                                 $$ = CBQCLF_CODEL;
2023                         else {
2024                                 yyerror("unknown cbq flag \"%s\"", $1);
2025                                 free($1);
2026                                 YYERROR;
2027                         }
2028                         free($1);
2029                 }
2030                 ;
2031
2032 priqflags_list  : priqflags_item                        { $$ |= $1; }
2033                 | priqflags_list comma priqflags_item   { $$ |= $3; }
2034                 ;
2035
2036 priqflags_item  : STRING        {
2037                         if (!strcmp($1, "default"))
2038                                 $$ = PRCF_DEFAULTCLASS;
2039                         else if (!strcmp($1, "red"))
2040                                 $$ = PRCF_RED;
2041                         else if (!strcmp($1, "ecn"))
2042                                 $$ = PRCF_RED|PRCF_ECN;
2043                         else if (!strcmp($1, "rio"))
2044                                 $$ = PRCF_RIO;
2045                         else if (!strcmp($1, "codel"))
2046                                 $$ = PRCF_CODEL;
2047                         else {
2048                                 yyerror("unknown priq flag \"%s\"", $1);
2049                                 free($1);
2050                                 YYERROR;
2051                         }
2052                         free($1);
2053                 }
2054                 ;
2055
2056 hfsc_opts       :       {
2057                                 bzero(&hfsc_opts,
2058                                     sizeof(struct node_hfsc_opts));
2059                         }
2060                     hfscopts_list                               {
2061                         $$ = hfsc_opts;
2062                 }
2063                 ;
2064
2065 hfscopts_list   : hfscopts_item
2066                 | hfscopts_list comma hfscopts_item
2067                 ;
2068
2069 hfscopts_item   : LINKSHARE bandwidth                           {
2070                         if (hfsc_opts.linkshare.used) {
2071                                 yyerror("linkshare already specified");
2072                                 YYERROR;
2073                         }
2074                         hfsc_opts.linkshare.m2 = $2;
2075                         hfsc_opts.linkshare.used = 1;
2076                 }
2077                 | LINKSHARE '(' bandwidth comma NUMBER comma bandwidth ')'
2078                     {
2079                         if ($5 < 0 || $5 > INT_MAX) {
2080                                 yyerror("timing in curve out of range");
2081                                 YYERROR;
2082                         }
2083                         if (hfsc_opts.linkshare.used) {
2084                                 yyerror("linkshare already specified");
2085                                 YYERROR;
2086                         }
2087                         hfsc_opts.linkshare.m1 = $3;
2088                         hfsc_opts.linkshare.d = $5;
2089                         hfsc_opts.linkshare.m2 = $7;
2090                         hfsc_opts.linkshare.used = 1;
2091                 }
2092                 | REALTIME bandwidth                            {
2093                         if (hfsc_opts.realtime.used) {
2094                                 yyerror("realtime already specified");
2095                                 YYERROR;
2096                         }
2097                         hfsc_opts.realtime.m2 = $2;
2098                         hfsc_opts.realtime.used = 1;
2099                 }
2100                 | REALTIME '(' bandwidth comma NUMBER comma bandwidth ')'
2101                     {
2102                         if ($5 < 0 || $5 > INT_MAX) {
2103                                 yyerror("timing in curve out of range");
2104                                 YYERROR;
2105                         }
2106                         if (hfsc_opts.realtime.used) {
2107                                 yyerror("realtime already specified");
2108                                 YYERROR;
2109                         }
2110                         hfsc_opts.realtime.m1 = $3;
2111                         hfsc_opts.realtime.d = $5;
2112                         hfsc_opts.realtime.m2 = $7;
2113                         hfsc_opts.realtime.used = 1;
2114                 }
2115                 | UPPERLIMIT bandwidth                          {
2116                         if (hfsc_opts.upperlimit.used) {
2117                                 yyerror("upperlimit already specified");
2118                                 YYERROR;
2119                         }
2120                         hfsc_opts.upperlimit.m2 = $2;
2121                         hfsc_opts.upperlimit.used = 1;
2122                 }
2123                 | UPPERLIMIT '(' bandwidth comma NUMBER comma bandwidth ')'
2124                     {
2125                         if ($5 < 0 || $5 > INT_MAX) {
2126                                 yyerror("timing in curve out of range");
2127                                 YYERROR;
2128                         }
2129                         if (hfsc_opts.upperlimit.used) {
2130                                 yyerror("upperlimit already specified");
2131                                 YYERROR;
2132                         }
2133                         hfsc_opts.upperlimit.m1 = $3;
2134                         hfsc_opts.upperlimit.d = $5;
2135                         hfsc_opts.upperlimit.m2 = $7;
2136                         hfsc_opts.upperlimit.used = 1;
2137                 }
2138                 | STRING        {
2139                         if (!strcmp($1, "default"))
2140                                 hfsc_opts.flags |= HFCF_DEFAULTCLASS;
2141                         else if (!strcmp($1, "red"))
2142                                 hfsc_opts.flags |= HFCF_RED;
2143                         else if (!strcmp($1, "ecn"))
2144                                 hfsc_opts.flags |= HFCF_RED|HFCF_ECN;
2145                         else if (!strcmp($1, "rio"))
2146                                 hfsc_opts.flags |= HFCF_RIO;
2147                         else if (!strcmp($1, "codel"))
2148                                 hfsc_opts.flags |= HFCF_CODEL;
2149                         else {
2150                                 yyerror("unknown hfsc flag \"%s\"", $1);
2151                                 free($1);
2152                                 YYERROR;
2153                         }
2154                         free($1);
2155                 }
2156                 ;
2157
2158 fairq_opts      :       {
2159                                 bzero(&fairq_opts,
2160                                     sizeof(struct node_fairq_opts));
2161                         }
2162                     fairqopts_list                              {
2163                         $$ = fairq_opts;
2164                 }
2165                 ;
2166
2167 fairqopts_list  : fairqopts_item
2168                 | fairqopts_list comma fairqopts_item
2169                 ;
2170
2171 fairqopts_item  : LINKSHARE bandwidth                           {
2172                         if (fairq_opts.linkshare.used) {
2173                                 yyerror("linkshare already specified");
2174                                 YYERROR;
2175                         }
2176                         fairq_opts.linkshare.m2 = $2;
2177                         fairq_opts.linkshare.used = 1;
2178                 }
2179                 | LINKSHARE '(' bandwidth number bandwidth ')'  {
2180                         if (fairq_opts.linkshare.used) {
2181                                 yyerror("linkshare already specified");
2182                                 YYERROR;
2183                         }
2184                         fairq_opts.linkshare.m1 = $3;
2185                         fairq_opts.linkshare.d = $4;
2186                         fairq_opts.linkshare.m2 = $5;
2187                         fairq_opts.linkshare.used = 1;
2188                 }
2189                 | HOGS bandwidth {
2190                         fairq_opts.hogs_bw = $2;
2191                 }
2192                 | BUCKETS number {
2193                         fairq_opts.nbuckets = $2;
2194                 }
2195                 | STRING        {
2196                         if (!strcmp($1, "default"))
2197                                 fairq_opts.flags |= FARF_DEFAULTCLASS;
2198                         else if (!strcmp($1, "red"))
2199                                 fairq_opts.flags |= FARF_RED;
2200                         else if (!strcmp($1, "ecn"))
2201                                 fairq_opts.flags |= FARF_RED|FARF_ECN;
2202                         else if (!strcmp($1, "rio"))
2203                                 fairq_opts.flags |= FARF_RIO;
2204                         else if (!strcmp($1, "codel"))
2205                                 fairq_opts.flags |= FARF_CODEL;
2206                         else {
2207                                 yyerror("unknown fairq flag \"%s\"", $1);
2208                                 free($1);
2209                                 YYERROR;
2210                         }
2211                         free($1);
2212                 }
2213                 ;
2214
2215 codel_opts      :       {
2216                                 bzero(&codel_opts,
2217                                     sizeof(struct codel_opts));
2218                         }
2219                     codelopts_list                              {
2220                         $$ = codel_opts;
2221                 }
2222                 ;
2223
2224 codelopts_list  : codelopts_item
2225                 | codelopts_list comma codelopts_item
2226                 ;
2227
2228 codelopts_item  : INTERVAL number                               {
2229                         if (codel_opts.interval) {
2230                                 yyerror("interval already specified");
2231                                 YYERROR;
2232                         }
2233                         codel_opts.interval = $2;
2234                 }
2235                 | TARGET number                                 {
2236                         if (codel_opts.target) {
2237                                 yyerror("target already specified");
2238                                 YYERROR;
2239                         }
2240                         codel_opts.target = $2;
2241                 }
2242                 | STRING                                        {
2243                         if (!strcmp($1, "ecn"))
2244                                 codel_opts.ecn = 1;
2245                         else {
2246                                 yyerror("unknown codel option \"%s\"", $1);
2247                                 free($1);
2248                                 YYERROR;
2249                         }
2250                         free($1);
2251                 }
2252                 ;
2253
2254 qassign         : /* empty */           { $$ = NULL; }
2255                 | qassign_item          { $$ = $1; }
2256                 | '{' optnl qassign_list '}'    { $$ = $3; }
2257                 ;
2258
2259 qassign_list    : qassign_item optnl            { $$ = $1; }
2260                 | qassign_list comma qassign_item optnl {
2261                         $1->tail->next = $3;
2262                         $1->tail = $3;
2263                         $$ = $1;
2264                 }
2265                 ;
2266
2267 qassign_item    : STRING                        {
2268                         $$ = calloc(1, sizeof(struct node_queue));
2269                         if ($$ == NULL)
2270                                 err(1, "qassign_item: calloc");
2271                         if (strlcpy($$->queue, $1, sizeof($$->queue)) >=
2272                             sizeof($$->queue)) {
2273                                 yyerror("queue name '%s' too long (max "
2274                                     "%d chars)", $1, sizeof($$->queue)-1);
2275                                 free($1);
2276                                 free($$);
2277                                 YYERROR;
2278                         }
2279                         free($1);
2280                         $$->next = NULL;
2281                         $$->tail = $$;
2282                 }
2283                 ;
2284
2285 pfrule          : action dir logquick interface route af proto fromto
2286                     filter_opts
2287                 {
2288                         struct pfctl_rule        r;
2289                         struct node_state_opt   *o;
2290                         struct node_proto       *proto;
2291                         int                      srctrack = 0;
2292                         int                      statelock = 0;
2293                         int                      adaptive = 0;
2294                         int                      defaults = 0;
2295
2296                         if (check_rulestate(PFCTL_STATE_FILTER))
2297                                 YYERROR;
2298
2299                         memset(&r, 0, sizeof(r));
2300
2301                         r.action = $1.b1;
2302                         switch ($1.b2) {
2303                         case PFRULE_RETURNRST:
2304                                 r.rule_flag |= PFRULE_RETURNRST;
2305                                 r.return_ttl = $1.w;
2306                                 break;
2307                         case PFRULE_RETURNICMP:
2308                                 r.rule_flag |= PFRULE_RETURNICMP;
2309                                 r.return_icmp = $1.w;
2310                                 r.return_icmp6 = $1.w2;
2311                                 break;
2312                         case PFRULE_RETURN:
2313                                 r.rule_flag |= PFRULE_RETURN;
2314                                 r.return_icmp = $1.w;
2315                                 r.return_icmp6 = $1.w2;
2316                                 break;
2317                         }
2318                         r.direction = $2;
2319                         r.log = $3.log;
2320                         r.logif = $3.logif;
2321                         r.quick = $3.quick;
2322                         r.prob = $9.prob;
2323                         r.rtableid = $9.rtableid;
2324
2325                         if ($9.marker & FOM_PRIO) {
2326                                 if ($9.prio == 0)
2327                                         r.prio = PF_PRIO_ZERO;
2328                                 else
2329                                         r.prio = $9.prio;
2330                         }
2331                         if ($9.marker & FOM_SETPRIO) {
2332                                 r.set_prio[0] = $9.set_prio[0];
2333                                 r.set_prio[1] = $9.set_prio[1];
2334                                 r.scrub_flags |= PFSTATE_SETPRIO;
2335                         }
2336
2337                         r.af = $6;
2338                         if ($9.tag)
2339                                 if (strlcpy(r.tagname, $9.tag,
2340                                     PF_TAG_NAME_SIZE) >= PF_TAG_NAME_SIZE) {
2341                                         yyerror("tag too long, max %u chars",
2342                                             PF_TAG_NAME_SIZE - 1);
2343                                         YYERROR;
2344                                 }
2345                         if ($9.match_tag)
2346                                 if (strlcpy(r.match_tagname, $9.match_tag,
2347                                     PF_TAG_NAME_SIZE) >= PF_TAG_NAME_SIZE) {
2348                                         yyerror("tag too long, max %u chars",
2349                                             PF_TAG_NAME_SIZE - 1);
2350                                         YYERROR;
2351                                 }
2352                         r.match_tag_not = $9.match_tag_not;
2353                         if (rule_label(&r, $9.label))
2354                                 YYERROR;
2355                         for (int i = 0; i < PF_RULE_MAX_LABEL_COUNT; i++)
2356                                 free($9.label[i]);
2357                         r.ridentifier = $9.ridentifier;
2358                         r.flags = $9.flags.b1;
2359                         r.flagset = $9.flags.b2;
2360                         if (($9.flags.b1 & $9.flags.b2) != $9.flags.b1) {
2361                                 yyerror("flags always false");
2362                                 YYERROR;
2363                         }
2364                         if ($9.flags.b1 || $9.flags.b2 || $8.src_os) {
2365                                 for (proto = $7; proto != NULL &&
2366                                     proto->proto != IPPROTO_TCP;
2367                                     proto = proto->next)
2368                                         ;       /* nothing */
2369                                 if (proto == NULL && $7 != NULL) {
2370                                         if ($9.flags.b1 || $9.flags.b2)
2371                                                 yyerror(
2372                                                     "flags only apply to tcp");
2373                                         if ($8.src_os)
2374                                                 yyerror(
2375                                                     "OS fingerprinting only "
2376                                                     "apply to tcp");
2377                                         YYERROR;
2378                                 }
2379 #if 0
2380                                 if (($9.flags.b1 & parse_flags("S")) == 0 &&
2381                                     $8.src_os) {
2382                                         yyerror("OS fingerprinting requires "
2383                                             "the SYN TCP flag (flags S/SA)");
2384                                         YYERROR;
2385                                 }
2386 #endif
2387                         }
2388
2389                         r.tos = $9.tos;
2390                         r.keep_state = $9.keep.action;
2391                         o = $9.keep.options;
2392
2393                         /* 'keep state' by default on pass rules. */
2394                         if (!r.keep_state && !r.action &&
2395                             !($9.marker & FOM_KEEP)) {
2396                                 r.keep_state = PF_STATE_NORMAL;
2397                                 o = keep_state_defaults;
2398                                 defaults = 1;
2399                         }
2400
2401                         while (o) {
2402                                 struct node_state_opt   *p = o;
2403
2404                                 switch (o->type) {
2405                                 case PF_STATE_OPT_MAX:
2406                                         if (r.max_states) {
2407                                                 yyerror("state option 'max' "
2408                                                     "multiple definitions");
2409                                                 YYERROR;
2410                                         }
2411                                         r.max_states = o->data.max_states;
2412                                         break;
2413                                 case PF_STATE_OPT_NOSYNC:
2414                                         if (r.rule_flag & PFRULE_NOSYNC) {
2415                                                 yyerror("state option 'sync' "
2416                                                     "multiple definitions");
2417                                                 YYERROR;
2418                                         }
2419                                         r.rule_flag |= PFRULE_NOSYNC;
2420                                         break;
2421                                 case PF_STATE_OPT_SRCTRACK:
2422                                         if (srctrack) {
2423                                                 yyerror("state option "
2424                                                     "'source-track' "
2425                                                     "multiple definitions");
2426                                                 YYERROR;
2427                                         }
2428                                         srctrack =  o->data.src_track;
2429                                         r.rule_flag |= PFRULE_SRCTRACK;
2430                                         break;
2431                                 case PF_STATE_OPT_MAX_SRC_STATES:
2432                                         if (r.max_src_states) {
2433                                                 yyerror("state option "
2434                                                     "'max-src-states' "
2435                                                     "multiple definitions");
2436                                                 YYERROR;
2437                                         }
2438                                         if (o->data.max_src_states == 0) {
2439                                                 yyerror("'max-src-states' must "
2440                                                     "be > 0");
2441                                                 YYERROR;
2442                                         }
2443                                         r.max_src_states =
2444                                             o->data.max_src_states;
2445                                         r.rule_flag |= PFRULE_SRCTRACK;
2446                                         break;
2447                                 case PF_STATE_OPT_OVERLOAD:
2448                                         if (r.overload_tblname[0]) {
2449                                                 yyerror("multiple 'overload' "
2450                                                     "table definitions");
2451                                                 YYERROR;
2452                                         }
2453                                         if (strlcpy(r.overload_tblname,
2454                                             o->data.overload.tblname,
2455                                             PF_TABLE_NAME_SIZE) >=
2456                                             PF_TABLE_NAME_SIZE) {
2457                                                 yyerror("state option: "
2458                                                     "strlcpy");
2459                                                 YYERROR;
2460                                         }
2461                                         r.flush = o->data.overload.flush;
2462                                         break;
2463                                 case PF_STATE_OPT_MAX_SRC_CONN:
2464                                         if (r.max_src_conn) {
2465                                                 yyerror("state option "
2466                                                     "'max-src-conn' "
2467                                                     "multiple definitions");
2468                                                 YYERROR;
2469                                         }
2470                                         if (o->data.max_src_conn == 0) {
2471                                                 yyerror("'max-src-conn' "
2472                                                     "must be > 0");
2473                                                 YYERROR;
2474                                         }
2475                                         r.max_src_conn =
2476                                             o->data.max_src_conn;
2477                                         r.rule_flag |= PFRULE_SRCTRACK |
2478                                             PFRULE_RULESRCTRACK;
2479                                         break;
2480                                 case PF_STATE_OPT_MAX_SRC_CONN_RATE:
2481                                         if (r.max_src_conn_rate.limit) {
2482                                                 yyerror("state option "
2483                                                     "'max-src-conn-rate' "
2484                                                     "multiple definitions");
2485                                                 YYERROR;
2486                                         }
2487                                         if (!o->data.max_src_conn_rate.limit ||
2488                                             !o->data.max_src_conn_rate.seconds) {
2489                                                 yyerror("'max-src-conn-rate' "
2490                                                     "values must be > 0");
2491                                                 YYERROR;
2492                                         }
2493                                         if (o->data.max_src_conn_rate.limit >
2494                                             PF_THRESHOLD_MAX) {
2495                                                 yyerror("'max-src-conn-rate' "
2496                                                     "maximum rate must be < %u",
2497                                                     PF_THRESHOLD_MAX);
2498                                                 YYERROR;
2499                                         }
2500                                         r.max_src_conn_rate.limit =
2501                                             o->data.max_src_conn_rate.limit;
2502                                         r.max_src_conn_rate.seconds =
2503                                             o->data.max_src_conn_rate.seconds;
2504                                         r.rule_flag |= PFRULE_SRCTRACK |
2505                                             PFRULE_RULESRCTRACK;
2506                                         break;
2507                                 case PF_STATE_OPT_MAX_SRC_NODES:
2508                                         if (r.max_src_nodes) {
2509                                                 yyerror("state option "
2510                                                     "'max-src-nodes' "
2511                                                     "multiple definitions");
2512                                                 YYERROR;
2513                                         }
2514                                         if (o->data.max_src_nodes == 0) {
2515                                                 yyerror("'max-src-nodes' must "
2516                                                     "be > 0");
2517                                                 YYERROR;
2518                                         }
2519                                         r.max_src_nodes =
2520                                             o->data.max_src_nodes;
2521                                         r.rule_flag |= PFRULE_SRCTRACK |
2522                                             PFRULE_RULESRCTRACK;
2523                                         break;
2524                                 case PF_STATE_OPT_STATELOCK:
2525                                         if (statelock) {
2526                                                 yyerror("state locking option: "
2527                                                     "multiple definitions");
2528                                                 YYERROR;
2529                                         }
2530                                         statelock = 1;
2531                                         r.rule_flag |= o->data.statelock;
2532                                         break;
2533                                 case PF_STATE_OPT_SLOPPY:
2534                                         if (r.rule_flag & PFRULE_STATESLOPPY) {
2535                                                 yyerror("state sloppy option: "
2536                                                     "multiple definitions");
2537                                                 YYERROR;
2538                                         }
2539                                         r.rule_flag |= PFRULE_STATESLOPPY;
2540                                         break;
2541                                 case PF_STATE_OPT_TIMEOUT:
2542                                         if (o->data.timeout.number ==
2543                                             PFTM_ADAPTIVE_START ||
2544                                             o->data.timeout.number ==
2545                                             PFTM_ADAPTIVE_END)
2546                                                 adaptive = 1;
2547                                         if (r.timeout[o->data.timeout.number]) {
2548                                                 yyerror("state timeout %s "
2549                                                     "multiple definitions",
2550                                                     pf_timeouts[o->data.
2551                                                     timeout.number].name);
2552                                                 YYERROR;
2553                                         }
2554                                         r.timeout[o->data.timeout.number] =
2555                                             o->data.timeout.seconds;
2556                                 }
2557                                 o = o->next;
2558                                 if (!defaults)
2559                                         free(p);
2560                         }
2561
2562                         /* 'flags S/SA' by default on stateful rules */
2563                         if (!r.action && !r.flags && !r.flagset &&
2564                             !$9.fragment && !($9.marker & FOM_FLAGS) &&
2565                             r.keep_state) {
2566                                 r.flags = parse_flags("S");
2567                                 r.flagset =  parse_flags("SA");
2568                         }
2569                         if (!adaptive && r.max_states) {
2570                                 r.timeout[PFTM_ADAPTIVE_START] =
2571                                     (r.max_states / 10) * 6;
2572                                 r.timeout[PFTM_ADAPTIVE_END] =
2573                                     (r.max_states / 10) * 12;
2574                         }
2575                         if (r.rule_flag & PFRULE_SRCTRACK) {
2576                                 if (srctrack == PF_SRCTRACK_GLOBAL &&
2577                                     r.max_src_nodes) {
2578                                         yyerror("'max-src-nodes' is "
2579                                             "incompatible with "
2580                                             "'source-track global'");
2581                                         YYERROR;
2582                                 }
2583                                 if (srctrack == PF_SRCTRACK_GLOBAL &&
2584                                     r.max_src_conn) {
2585                                         yyerror("'max-src-conn' is "
2586                                             "incompatible with "
2587                                             "'source-track global'");
2588                                         YYERROR;
2589                                 }
2590                                 if (srctrack == PF_SRCTRACK_GLOBAL &&
2591                                     r.max_src_conn_rate.seconds) {
2592                                         yyerror("'max-src-conn-rate' is "
2593                                             "incompatible with "
2594                                             "'source-track global'");
2595                                         YYERROR;
2596                                 }
2597                                 if (r.timeout[PFTM_SRC_NODE] <
2598                                     r.max_src_conn_rate.seconds)
2599                                         r.timeout[PFTM_SRC_NODE] =
2600                                             r.max_src_conn_rate.seconds;
2601                                 r.rule_flag |= PFRULE_SRCTRACK;
2602                                 if (srctrack == PF_SRCTRACK_RULE)
2603                                         r.rule_flag |= PFRULE_RULESRCTRACK;
2604                         }
2605                         if (r.keep_state && !statelock)
2606                                 r.rule_flag |= default_statelock;
2607
2608                         if ($9.fragment)
2609                                 r.rule_flag |= PFRULE_FRAGMENT;
2610                         r.allow_opts = $9.allowopts;
2611
2612                         decide_address_family($8.src.host, &r.af);
2613                         decide_address_family($8.dst.host, &r.af);
2614
2615                         if ($5.rt) {
2616                                 if (!r.direction) {
2617                                         yyerror("direction must be explicit "
2618                                             "with rules that specify routing");
2619                                         YYERROR;
2620                                 }
2621                                 r.rt = $5.rt;
2622                                 r.rpool.opts = $5.pool_opts;
2623                                 if ($5.key != NULL)
2624                                         memcpy(&r.rpool.key, $5.key,
2625                                             sizeof(struct pf_poolhashkey));
2626                         }
2627                         if (r.rt) {
2628                                 decide_address_family($5.host, &r.af);
2629                                 remove_invalid_hosts(&$5.host, &r.af);
2630                                 if ($5.host == NULL) {
2631                                         yyerror("no routing address with "
2632                                             "matching address family found.");
2633                                         YYERROR;
2634                                 }
2635                                 if ((r.rpool.opts & PF_POOL_TYPEMASK) ==
2636                                     PF_POOL_NONE && ($5.host->next != NULL ||
2637                                     $5.host->addr.type == PF_ADDR_TABLE ||
2638                                     DYNIF_MULTIADDR($5.host->addr)))
2639                                         r.rpool.opts |= PF_POOL_ROUNDROBIN;
2640                                 if ((r.rpool.opts & PF_POOL_TYPEMASK) !=
2641                                     PF_POOL_ROUNDROBIN &&
2642                                     disallow_table($5.host, "tables are only "
2643                                     "supported in round-robin routing pools"))
2644                                         YYERROR;
2645                                 if ((r.rpool.opts & PF_POOL_TYPEMASK) !=
2646                                     PF_POOL_ROUNDROBIN &&
2647                                     disallow_alias($5.host, "interface (%s) "
2648                                     "is only supported in round-robin "
2649                                     "routing pools"))
2650                                         YYERROR;
2651                                 if ($5.host->next != NULL) {
2652                                         if ((r.rpool.opts & PF_POOL_TYPEMASK) !=
2653                                             PF_POOL_ROUNDROBIN) {
2654                                                 yyerror("r.rpool.opts must "
2655                                                     "be PF_POOL_ROUNDROBIN");
2656                                                 YYERROR;
2657                                         }
2658                                 }
2659                         }
2660                         if ($9.queues.qname != NULL) {
2661                                 if (strlcpy(r.qname, $9.queues.qname,
2662                                     sizeof(r.qname)) >= sizeof(r.qname)) {
2663                                         yyerror("rule qname too long (max "
2664                                             "%d chars)", sizeof(r.qname)-1);
2665                                         YYERROR;
2666                                 }
2667                                 free($9.queues.qname);
2668                         }
2669                         if ($9.queues.pqname != NULL) {
2670                                 if (strlcpy(r.pqname, $9.queues.pqname,
2671                                     sizeof(r.pqname)) >= sizeof(r.pqname)) {
2672                                         yyerror("rule pqname too long (max "
2673                                             "%d chars)", sizeof(r.pqname)-1);
2674                                         YYERROR;
2675                                 }
2676                                 free($9.queues.pqname);
2677                         }
2678 #ifdef __FreeBSD__
2679                         r.divert.port = $9.divert.port;
2680 #else
2681                         if ((r.divert.port = $9.divert.port)) {
2682                                 if (r.direction == PF_OUT) {
2683                                         if ($9.divert.addr) {
2684                                                 yyerror("address specified "
2685                                                     "for outgoing divert");
2686                                                 YYERROR;
2687                                         }
2688                                         bzero(&r.divert.addr,
2689                                             sizeof(r.divert.addr));
2690                                 } else {
2691                                         if (!$9.divert.addr) {
2692                                                 yyerror("no address specified "
2693                                                     "for incoming divert");
2694                                                 YYERROR;
2695                                         }
2696                                         if ($9.divert.addr->af != r.af) {
2697                                                 yyerror("address family "
2698                                                     "mismatch for divert");
2699                                                 YYERROR;
2700                                         }
2701                                         r.divert.addr =
2702                                             $9.divert.addr->addr.v.a.addr;
2703                                 }
2704                         }
2705 #endif
2706
2707                         if ($9.dnpipe || $9.dnrpipe) {
2708                                 r.dnpipe = $9.dnpipe;
2709                                 r.dnrpipe = $9.dnrpipe;
2710                                 if ($9.free_flags & PFRULE_DN_IS_PIPE)
2711                                         r.free_flags |= PFRULE_DN_IS_PIPE;
2712                                 else
2713                                         r.free_flags |= PFRULE_DN_IS_QUEUE;
2714                         }
2715
2716                         expand_rule(&r, $4, $5.host, $7, $8.src_os,
2717                             $8.src.host, $8.src.port, $8.dst.host, $8.dst.port,
2718                             $9.uid, $9.gid, $9.icmpspec, "");
2719                 }
2720                 ;
2721
2722 filter_opts     :       {
2723                                 bzero(&filter_opts, sizeof filter_opts);
2724                                 filter_opts.rtableid = -1;
2725                         }
2726                     filter_opts_l
2727                         { $$ = filter_opts; }
2728                 | /* empty */   {
2729                         bzero(&filter_opts, sizeof filter_opts);
2730                         filter_opts.rtableid = -1;
2731                         $$ = filter_opts;
2732                 }
2733                 ;
2734
2735 filter_opts_l   : filter_opts_l filter_opt
2736                 | filter_opt
2737                 ;
2738
2739 filter_opt      : USER uids {
2740                         if (filter_opts.uid)
2741                                 $2->tail->next = filter_opts.uid;
2742                         filter_opts.uid = $2;
2743                 }
2744                 | GROUP gids {
2745                         if (filter_opts.gid)
2746                                 $2->tail->next = filter_opts.gid;
2747                         filter_opts.gid = $2;
2748                 }
2749                 | flags {
2750                         if (filter_opts.marker & FOM_FLAGS) {
2751                                 yyerror("flags cannot be redefined");
2752                                 YYERROR;
2753                         }
2754                         filter_opts.marker |= FOM_FLAGS;
2755                         filter_opts.flags.b1 |= $1.b1;
2756                         filter_opts.flags.b2 |= $1.b2;
2757                         filter_opts.flags.w |= $1.w;
2758                         filter_opts.flags.w2 |= $1.w2;
2759                 }
2760                 | icmpspec {
2761                         if (filter_opts.marker & FOM_ICMP) {
2762                                 yyerror("icmp-type cannot be redefined");
2763                                 YYERROR;
2764                         }
2765                         filter_opts.marker |= FOM_ICMP;
2766                         filter_opts.icmpspec = $1;
2767                 }
2768                 | PRIO NUMBER {
2769                         if (filter_opts.marker & FOM_PRIO) {
2770                                 yyerror("prio cannot be redefined");
2771                                 YYERROR;
2772                         }
2773                         if ($2 < 0 || $2 > PF_PRIO_MAX) {
2774                                 yyerror("prio must be 0 - %u", PF_PRIO_MAX);
2775                                 YYERROR;
2776                         }
2777                         filter_opts.marker |= FOM_PRIO;
2778                         filter_opts.prio = $2;
2779                 }
2780                 | TOS tos {
2781                         if (filter_opts.marker & FOM_TOS) {
2782                                 yyerror("tos cannot be redefined");
2783                                 YYERROR;
2784                         }
2785                         filter_opts.marker |= FOM_TOS;
2786                         filter_opts.tos = $2;
2787                 }
2788                 | keep {
2789                         if (filter_opts.marker & FOM_KEEP) {
2790                                 yyerror("modulate or keep cannot be redefined");
2791                                 YYERROR;
2792                         }
2793                         filter_opts.marker |= FOM_KEEP;
2794                         filter_opts.keep.action = $1.action;
2795                         filter_opts.keep.options = $1.options;
2796                 }
2797                 | RIDENTIFIER number {
2798                         filter_opts.ridentifier = $2;
2799                 }
2800                 | FRAGMENT {
2801                         filter_opts.fragment = 1;
2802                 }
2803                 | ALLOWOPTS {
2804                         filter_opts.allowopts = 1;
2805                 }
2806                 | label {
2807                         if (filter_opts.labelcount >= PF_RULE_MAX_LABEL_COUNT) {
2808                                 yyerror("label can only be used %d times", PF_RULE_MAX_LABEL_COUNT);
2809                                 YYERROR;
2810                         }
2811                         filter_opts.label[filter_opts.labelcount++] = $1;
2812                 }
2813                 | qname {
2814                         if (filter_opts.queues.qname) {
2815                                 yyerror("queue cannot be redefined");
2816                                 YYERROR;
2817                         }
2818                         filter_opts.queues = $1;
2819                 }
2820                 | DNPIPE number {
2821                         filter_opts.dnpipe = $2;
2822                         filter_opts.free_flags |= PFRULE_DN_IS_PIPE;
2823                 }
2824                 | DNPIPE '(' number ')' {
2825                         filter_opts.dnpipe = $3;
2826                         filter_opts.free_flags |= PFRULE_DN_IS_PIPE;
2827                 }
2828                 | DNPIPE '(' number comma number ')' {
2829                         filter_opts.dnrpipe = $5;
2830                         filter_opts.dnpipe = $3;
2831                         filter_opts.free_flags |= PFRULE_DN_IS_PIPE;
2832                 }
2833                 | DNQUEUE number {
2834                         filter_opts.dnpipe = $2;
2835                         filter_opts.free_flags |= PFRULE_DN_IS_QUEUE;
2836                 }
2837                 | DNQUEUE '(' number comma number ')' {
2838                         filter_opts.dnrpipe = $5;
2839                         filter_opts.dnpipe = $3;
2840                         filter_opts.free_flags |= PFRULE_DN_IS_QUEUE;
2841                 }
2842                 | DNQUEUE '(' number ')' {
2843                         filter_opts.dnpipe = $3;
2844                         filter_opts.free_flags |= PFRULE_DN_IS_QUEUE;
2845                 }
2846                 | TAG string                            {
2847                         filter_opts.tag = $2;
2848                 }
2849                 | not TAGGED string                     {
2850                         filter_opts.match_tag = $3;
2851                         filter_opts.match_tag_not = $1;
2852                 }
2853                 | PROBABILITY probability               {
2854                         double  p;
2855
2856                         p = floor($2 * UINT_MAX + 0.5);
2857                         if (p < 0.0 || p > UINT_MAX) {
2858                                 yyerror("invalid probability: %lf", p);
2859                                 YYERROR;
2860                         }
2861                         filter_opts.prob = (u_int32_t)p;
2862                         if (filter_opts.prob == 0)
2863                                 filter_opts.prob = 1;
2864                 }
2865                 | RTABLE NUMBER                         {
2866                         if ($2 < 0 || $2 > rt_tableid_max()) {
2867                                 yyerror("invalid rtable id");
2868                                 YYERROR;
2869                         }
2870                         filter_opts.rtableid = $2;
2871                 }
2872                 | DIVERTTO portplain {
2873 #ifdef __FreeBSD__
2874                         filter_opts.divert.port = $2.a;
2875                         if (!filter_opts.divert.port) {
2876                                 yyerror("invalid divert port: %u", ntohs($2.a));
2877                                 YYERROR;
2878                         }
2879 #endif
2880                 }
2881                 | DIVERTTO STRING PORT portplain {
2882 #ifndef __FreeBSD__
2883                         if ((filter_opts.divert.addr = host($2)) == NULL) {
2884                                 yyerror("could not parse divert address: %s",
2885                                     $2);
2886                                 free($2);
2887                                 YYERROR;
2888                         }
2889 #else
2890                         if ($2)
2891 #endif
2892                         free($2);
2893                         filter_opts.divert.port = $4.a;
2894                         if (!filter_opts.divert.port) {
2895                                 yyerror("invalid divert port: %u", ntohs($4.a));
2896                                 YYERROR;
2897                         }
2898                 }
2899                 | DIVERTREPLY {
2900 #ifdef __FreeBSD__
2901                         yyerror("divert-reply has no meaning in FreeBSD pf(4)");
2902                         YYERROR;
2903 #else
2904                         filter_opts.divert.port = 1;    /* some random value */
2905 #endif
2906                 }
2907                 | filter_sets
2908                 ;
2909
2910 filter_sets     : SET '(' filter_sets_l ')'     { $$ = filter_opts; }
2911                 | SET filter_set                { $$ = filter_opts; }
2912                 ;
2913
2914 filter_sets_l   : filter_sets_l comma filter_set
2915                 | filter_set
2916                 ;
2917
2918 filter_set      : prio {
2919                         if (filter_opts.marker & FOM_SETPRIO) {
2920                                 yyerror("prio cannot be redefined");
2921                                 YYERROR;
2922                         }
2923                         filter_opts.marker |= FOM_SETPRIO;
2924                         filter_opts.set_prio[0] = $1.b1;
2925                         filter_opts.set_prio[1] = $1.b2;
2926                 }
2927 prio            : PRIO NUMBER {
2928                         if ($2 < 0 || $2 > PF_PRIO_MAX) {
2929                                 yyerror("prio must be 0 - %u", PF_PRIO_MAX);
2930                                 YYERROR;
2931                         }
2932                         $$.b1 = $$.b2 = $2;
2933                 }
2934                 | PRIO '(' NUMBER comma NUMBER ')' {
2935                         if ($3 < 0 || $3 > PF_PRIO_MAX ||
2936                             $5 < 0 || $5 > PF_PRIO_MAX) {
2937                                 yyerror("prio must be 0 - %u", PF_PRIO_MAX);
2938                                 YYERROR;
2939                         }
2940                         $$.b1 = $3;
2941                         $$.b2 = $5;
2942                 }
2943                 ;
2944
2945 probability     : STRING                                {
2946                         char    *e;
2947                         double   p = strtod($1, &e);
2948
2949                         if (*e == '%') {
2950                                 p *= 0.01;
2951                                 e++;
2952                         }
2953                         if (*e) {
2954                                 yyerror("invalid probability: %s", $1);
2955                                 free($1);
2956                                 YYERROR;
2957                         }
2958                         free($1);
2959                         $$ = p;
2960                 }
2961                 | NUMBER                                {
2962                         $$ = (double)$1;
2963                 }
2964                 ;
2965
2966
2967 action          : PASS                  {
2968                         $$.b1 = PF_PASS;
2969                         $$.b2 = failpolicy;
2970                         $$.w = returnicmpdefault;
2971                         $$.w2 = returnicmp6default;
2972                 }
2973                 | MATCH                 { $$.b1 = PF_MATCH; $$.b2 = $$.w = 0; }
2974                 | BLOCK blockspec       { $$ = $2; $$.b1 = PF_DROP; }
2975                 ;
2976
2977 blockspec       : /* empty */           {
2978                         $$.b2 = blockpolicy;
2979                         $$.w = returnicmpdefault;
2980                         $$.w2 = returnicmp6default;
2981                 }
2982                 | DROP                  {
2983                         $$.b2 = PFRULE_DROP;
2984                         $$.w = 0;
2985                         $$.w2 = 0;
2986                 }
2987                 | RETURNRST             {
2988                         $$.b2 = PFRULE_RETURNRST;
2989                         $$.w = 0;
2990                         $$.w2 = 0;
2991                 }
2992                 | RETURNRST '(' TTL NUMBER ')'  {
2993                         if ($4 < 0 || $4 > 255) {
2994                                 yyerror("illegal ttl value %d", $4);
2995                                 YYERROR;
2996                         }
2997                         $$.b2 = PFRULE_RETURNRST;
2998                         $$.w = $4;
2999                         $$.w2 = 0;
3000                 }
3001                 | RETURNICMP            {
3002                         $$.b2 = PFRULE_RETURNICMP;
3003                         $$.w = returnicmpdefault;
3004                         $$.w2 = returnicmp6default;
3005                 }
3006                 | RETURNICMP6           {
3007                         $$.b2 = PFRULE_RETURNICMP;
3008                         $$.w = returnicmpdefault;
3009                         $$.w2 = returnicmp6default;
3010                 }
3011                 | RETURNICMP '(' reticmpspec ')'        {
3012                         $$.b2 = PFRULE_RETURNICMP;
3013                         $$.w = $3;
3014                         $$.w2 = returnicmpdefault;
3015                 }
3016                 | RETURNICMP6 '(' reticmp6spec ')'      {
3017                         $$.b2 = PFRULE_RETURNICMP;
3018                         $$.w = returnicmpdefault;
3019                         $$.w2 = $3;
3020                 }
3021                 | RETURNICMP '(' reticmpspec comma reticmp6spec ')' {
3022                         $$.b2 = PFRULE_RETURNICMP;
3023                         $$.w = $3;
3024                         $$.w2 = $5;
3025                 }
3026                 | RETURN {
3027                         $$.b2 = PFRULE_RETURN;
3028                         $$.w = returnicmpdefault;
3029                         $$.w2 = returnicmp6default;
3030                 }
3031                 ;
3032
3033 reticmpspec     : STRING                        {
3034                         if (!($$ = parseicmpspec($1, AF_INET))) {
3035                                 free($1);
3036                                 YYERROR;
3037                         }
3038                         free($1);
3039                 }
3040                 | NUMBER                        {
3041                         u_int8_t                icmptype;
3042
3043                         if ($1 < 0 || $1 > 255) {
3044                                 yyerror("invalid icmp code %lu", $1);
3045                                 YYERROR;
3046                         }
3047                         icmptype = returnicmpdefault >> 8;
3048                         $$ = (icmptype << 8 | $1);
3049                 }
3050                 ;
3051
3052 reticmp6spec    : STRING                        {
3053                         if (!($$ = parseicmpspec($1, AF_INET6))) {
3054                                 free($1);
3055                                 YYERROR;
3056                         }
3057                         free($1);
3058                 }
3059                 | NUMBER                        {
3060                         u_int8_t                icmptype;
3061
3062                         if ($1 < 0 || $1 > 255) {
3063                                 yyerror("invalid icmp code %lu", $1);
3064                                 YYERROR;
3065                         }
3066                         icmptype = returnicmp6default >> 8;
3067                         $$ = (icmptype << 8 | $1);
3068                 }
3069                 ;
3070
3071 dir             : /* empty */                   { $$ = PF_INOUT; }
3072                 | IN                            { $$ = PF_IN; }
3073                 | OUT                           { $$ = PF_OUT; }
3074                 ;
3075
3076 quick           : /* empty */                   { $$.quick = 0; }
3077                 | QUICK                         { $$.quick = 1; }
3078                 ;
3079
3080 logquick        : /* empty */   { $$.log = 0; $$.quick = 0; $$.logif = 0; }
3081                 | log           { $$ = $1; $$.quick = 0; }
3082                 | QUICK         { $$.quick = 1; $$.log = 0; $$.logif = 0; }
3083                 | log QUICK     { $$ = $1; $$.quick = 1; }
3084                 | QUICK log     { $$ = $2; $$.quick = 1; }
3085                 ;
3086
3087 log             : LOG                   { $$.log = PF_LOG; $$.logif = 0; }
3088                 | LOG '(' logopts ')'   {
3089                         $$.log = PF_LOG | $3.log;
3090                         $$.logif = $3.logif;
3091                 }
3092                 ;
3093
3094 logopts         : logopt                        { $$ = $1; }
3095                 | logopts comma logopt          {
3096                         $$.log = $1.log | $3.log;
3097                         $$.logif = $3.logif;
3098                         if ($$.logif == 0)
3099                                 $$.logif = $1.logif;
3100                 }
3101                 ;
3102
3103 logopt          : ALL           { $$.log = PF_LOG_ALL; $$.logif = 0; }
3104                 | USER          { $$.log = PF_LOG_SOCKET_LOOKUP; $$.logif = 0; }
3105                 | GROUP         { $$.log = PF_LOG_SOCKET_LOOKUP; $$.logif = 0; }
3106                 | TO string     {
3107                         const char      *errstr;
3108                         u_int            i;
3109
3110                         $$.log = 0;
3111                         if (strncmp($2, "pflog", 5)) {
3112                                 yyerror("%s: should be a pflog interface", $2);
3113                                 free($2);
3114                                 YYERROR;
3115                         }
3116                         i = strtonum($2 + 5, 0, 255, &errstr);
3117                         if (errstr) {
3118                                 yyerror("%s: %s", $2, errstr);
3119                                 free($2);
3120                                 YYERROR;
3121                         }
3122                         free($2);
3123                         $$.logif = i;
3124                 }
3125                 ;
3126
3127 interface       : /* empty */                   { $$ = NULL; }
3128                 | ON if_item_not                { $$ = $2; }
3129                 | ON '{' optnl if_list '}'      { $$ = $4; }
3130                 ;
3131
3132 if_list         : if_item_not optnl             { $$ = $1; }
3133                 | if_list comma if_item_not optnl       {
3134                         $1->tail->next = $3;
3135                         $1->tail = $3;
3136                         $$ = $1;
3137                 }
3138                 ;
3139
3140 if_item_not     : not if_item                   { $$ = $2; $$->not = $1; }
3141                 ;
3142
3143 if_item         : STRING                        {
3144                         struct node_host        *n;
3145
3146                         $$ = calloc(1, sizeof(struct node_if));
3147                         if ($$ == NULL)
3148                                 err(1, "if_item: calloc");
3149                         if (strlcpy($$->ifname, $1, sizeof($$->ifname)) >=
3150                             sizeof($$->ifname)) {
3151                                 free($1);
3152                                 free($$);
3153                                 yyerror("interface name too long");
3154                                 YYERROR;
3155                         }
3156
3157                         if ((n = ifa_exists($1)) != NULL)
3158                                 $$->ifa_flags = n->ifa_flags;
3159
3160                         free($1);
3161                         $$->not = 0;
3162                         $$->next = NULL;
3163                         $$->tail = $$;
3164                 }
3165                 ;
3166
3167 af              : /* empty */                   { $$ = 0; }
3168                 | INET                          { $$ = AF_INET; }
3169                 | INET6                         { $$ = AF_INET6; }
3170                 ;
3171
3172 etherproto      : /* empty */                           { $$ = NULL; }
3173                 | PROTO etherproto_item                 { $$ = $2; }
3174                 | PROTO '{' optnl etherproto_list '}'   { $$ = $4; }
3175                 ;
3176
3177 etherproto_list : etherproto_item optnl                 { $$ = $1; }
3178                 | etherproto_list comma etherproto_item optnl   {
3179                         $1->tail->next = $3;
3180                         $1->tail = $3;
3181                         $$ = $1;
3182                 }
3183                 ;
3184
3185 etherproto_item : etherprotoval         {
3186                         u_int16_t       pr;
3187
3188                         pr = (u_int16_t)$1;
3189                         if (pr == 0) {
3190                                 yyerror("proto 0 cannot be used");
3191                                 YYERROR;
3192                         }
3193                         $$ = calloc(1, sizeof(struct node_proto));
3194                         if ($$ == NULL)
3195                                 err(1, "proto_item: calloc");
3196                         $$->proto = pr;
3197                         $$->next = NULL;
3198                         $$->tail = $$;
3199                 }
3200                 ;
3201
3202 etherprotoval   : NUMBER                        {
3203                         if ($1 < 0 || $1 > 65565) {
3204                                 yyerror("protocol outside range");
3205                                 YYERROR;
3206                         }
3207                 }
3208                 | STRING
3209                 {
3210                         if (!strncmp($1, "0x", 2)) {
3211                                 if (sscanf($1, "0x%4x", &$$) != 1) {
3212                                         free($1);
3213                                         yyerror("invalid EtherType hex");
3214                                         YYERROR;
3215                                 }
3216                         } else {
3217                                 yyerror("Symbolic EtherType not yet supported");
3218                         }
3219                 }
3220                 ;
3221
3222 proto           : /* empty */                           { $$ = NULL; }
3223                 | PROTO proto_item                      { $$ = $2; }
3224                 | PROTO '{' optnl proto_list '}'        { $$ = $4; }
3225                 ;
3226
3227 proto_list      : proto_item optnl              { $$ = $1; }
3228                 | proto_list comma proto_item optnl     {
3229                         $1->tail->next = $3;
3230                         $1->tail = $3;
3231                         $$ = $1;
3232                 }
3233                 ;
3234
3235 proto_item      : protoval                      {
3236                         u_int8_t        pr;
3237
3238                         pr = (u_int8_t)$1;
3239                         if (pr == 0) {
3240                                 yyerror("proto 0 cannot be used");
3241                                 YYERROR;
3242                         }
3243                         $$ = calloc(1, sizeof(struct node_proto));
3244                         if ($$ == NULL)
3245                                 err(1, "proto_item: calloc");
3246                         $$->proto = pr;
3247                         $$->next = NULL;
3248                         $$->tail = $$;
3249                 }
3250                 ;
3251
3252 protoval        : STRING                        {
3253                         struct protoent *p;
3254
3255                         p = getprotobyname($1);
3256                         if (p == NULL) {
3257                                 yyerror("unknown protocol %s", $1);
3258                                 free($1);
3259                                 YYERROR;
3260                         }
3261                         $$ = p->p_proto;
3262                         free($1);
3263                 }
3264                 | NUMBER                        {
3265                         if ($1 < 0 || $1 > 255) {
3266                                 yyerror("protocol outside range");
3267                                 YYERROR;
3268                         }
3269                 }
3270                 ;
3271
3272 l3fromto        : /* empty */                   {
3273                         bzero(&$$, sizeof($$));
3274                 }
3275                 | L3 fromto                     {
3276                         if ($2.src.host != NULL &&
3277                             $2.src.host->addr.type != PF_ADDR_ADDRMASK &&
3278                             $2.src.host->addr.type != PF_ADDR_TABLE) {
3279                                 yyerror("from must be an address or table");
3280                                 YYERROR;
3281                         }
3282                         if ($2.dst.host != NULL &&
3283                             $2.dst.host->addr.type != PF_ADDR_ADDRMASK &&
3284                             $2.dst.host->addr.type != PF_ADDR_TABLE) {
3285                                 yyerror("to must be an address or table");
3286                                 YYERROR;
3287                         }
3288                         $$ = $2;
3289                 }
3290                 ;
3291 etherfromto     : ALL                           {
3292                         $$.src = NULL;
3293                         $$.dst = NULL;
3294                 }
3295                 | etherfrom etherto             {
3296                         $$.src = $1.mac;
3297                         $$.dst = $2.mac;
3298                 }
3299                 ;
3300
3301 etherfrom       : /* emtpy */                   {
3302                         bzero(&$$, sizeof($$));
3303                 }
3304                 | FROM macspec                  {
3305                         $$.mac = $2;
3306                 }
3307                 ;
3308
3309 etherto         : /* empty */                   {
3310                         bzero(&$$, sizeof($$));
3311                 }
3312                 | TO macspec                    {
3313                         $$.mac = $2;
3314                 }
3315                 ;
3316
3317 mac             : string '/' NUMBER             {
3318                         $$ = node_mac_from_string_masklen($1, $3);
3319                         free($1);
3320                         if ($$ == NULL)
3321                                 YYERROR;
3322                 }
3323                 | string                        {
3324                         if (strchr($1, '&')) {
3325                                 /* mac&mask */
3326                                 char *mac = strtok($1, "&");
3327                                 char *mask = strtok(NULL, "&");
3328                                 $$ = node_mac_from_string_mask(mac, mask);
3329                         } else {
3330                                 $$ = node_mac_from_string($1);
3331                         }
3332                         free($1);
3333                         if ($$ == NULL)
3334                                 YYERROR;
3335
3336                 }
3337 xmac            : not mac {
3338                         struct node_mac *n;
3339
3340                         for (n = $2; n != NULL; n = n->next)
3341                                 n->neg = $1;
3342                         $$ = $2;
3343                 }
3344                 ;
3345 macspec         : xmac {
3346                         $$ = $1;
3347                 }
3348                 | '{' optnl mac_list '}'
3349                 {
3350                         $$ = $3;
3351                 }
3352                 ;
3353 mac_list        : xmac optnl {
3354                         $$ = $1;
3355                 }
3356                 | mac_list comma xmac {
3357                         if ($3 == NULL)
3358                                 $$ = $1;
3359                         else if ($1 == NULL)
3360                                 $$ = $3;
3361                         else {
3362                                 $1->tail->next = $3;
3363                                 $1->tail = $3->tail;
3364                                 $$ = $1;
3365                         }
3366                 }
3367
3368 fromto          : ALL                           {
3369                         $$.src.host = NULL;
3370                         $$.src.port = NULL;
3371                         $$.dst.host = NULL;
3372                         $$.dst.port = NULL;
3373                         $$.src_os = NULL;
3374                 }
3375                 | from os to                    {
3376                         $$.src = $1;
3377                         $$.src_os = $2;
3378                         $$.dst = $3;
3379                 }
3380                 ;
3381
3382 os              : /* empty */                   { $$ = NULL; }
3383                 | OS xos                        { $$ = $2; }
3384                 | OS '{' optnl os_list '}'      { $$ = $4; }
3385                 ;
3386
3387 xos             : STRING {
3388                         $$ = calloc(1, sizeof(struct node_os));
3389                         if ($$ == NULL)
3390                                 err(1, "os: calloc");
3391                         $$->os = $1;
3392                         $$->tail = $$;
3393                 }
3394                 ;
3395
3396 os_list         : xos optnl                     { $$ = $1; }
3397                 | os_list comma xos optnl       {
3398                         $1->tail->next = $3;
3399                         $1->tail = $3;
3400                         $$ = $1;
3401                 }
3402                 ;
3403
3404 from            : /* empty */                   {
3405                         $$.host = NULL;
3406                         $$.port = NULL;
3407                 }
3408                 | FROM ipportspec               {
3409                         $$ = $2;
3410                 }
3411                 ;
3412
3413 to              : /* empty */                   {
3414                         $$.host = NULL;
3415                         $$.port = NULL;
3416                 }
3417                 | TO ipportspec         {
3418                         if (disallow_urpf_failed($2.host, "\"urpf-failed\" is "
3419                             "not permitted in a destination address"))
3420                                 YYERROR;
3421                         $$ = $2;
3422                 }
3423                 ;
3424
3425 ipportspec      : ipspec                        {
3426                         $$.host = $1;
3427                         $$.port = NULL;
3428                 }
3429                 | ipspec PORT portspec          {
3430                         $$.host = $1;
3431                         $$.port = $3;
3432                 }
3433                 | PORT portspec                 {
3434                         $$.host = NULL;
3435                         $$.port = $2;
3436                 }
3437                 ;
3438
3439 optnl           : '\n' optnl
3440                 |
3441                 ;
3442
3443 ipspec          : ANY                           { $$ = NULL; }
3444                 | xhost                         { $$ = $1; }
3445                 | '{' optnl host_list '}'       { $$ = $3; }
3446                 ;
3447
3448 toipspec        : TO ipspec                     { $$ = $2; }
3449                 | /* empty */                   { $$ = NULL; }
3450                 ;
3451
3452 host_list       : ipspec optnl                  { $$ = $1; }
3453                 | host_list comma ipspec optnl  {
3454                         if ($3 == NULL)
3455                                 $$ = $1;
3456                         else if ($1 == NULL)
3457                                 $$ = $3;
3458                         else {
3459                                 $1->tail->next = $3;
3460                                 $1->tail = $3->tail;
3461                                 $$ = $1;
3462                         }
3463                 }
3464                 ;
3465
3466 xhost           : not host                      {
3467                         struct node_host        *n;
3468
3469                         for (n = $2; n != NULL; n = n->next)
3470                                 n->not = $1;
3471                         $$ = $2;
3472                 }
3473                 | not NOROUTE                   {
3474                         $$ = calloc(1, sizeof(struct node_host));
3475                         if ($$ == NULL)
3476                                 err(1, "xhost: calloc");
3477                         $$->addr.type = PF_ADDR_NOROUTE;
3478                         $$->next = NULL;
3479                         $$->not = $1;
3480                         $$->tail = $$;
3481                 }
3482                 | not URPFFAILED                {
3483                         $$ = calloc(1, sizeof(struct node_host));
3484                         if ($$ == NULL)
3485                                 err(1, "xhost: calloc");
3486                         $$->addr.type = PF_ADDR_URPFFAILED;
3487                         $$->next = NULL;
3488                         $$->not = $1;
3489                         $$->tail = $$;
3490                 }
3491                 ;
3492
3493 host            : STRING                        {
3494                         if (($$ = host($1)) == NULL)    {
3495                                 /* error. "any" is handled elsewhere */
3496                                 free($1);
3497                                 yyerror("could not parse host specification");
3498                                 YYERROR;
3499                         }
3500                         free($1);
3501
3502                 }
3503                 | STRING '-' STRING             {
3504                         struct node_host *b, *e;
3505
3506                         if ((b = host($1)) == NULL || (e = host($3)) == NULL) {
3507                                 free($1);
3508                                 free($3);
3509                                 yyerror("could not parse host specification");
3510                                 YYERROR;
3511                         }
3512                         if (b->af != e->af ||
3513                             b->addr.type != PF_ADDR_ADDRMASK ||
3514                             e->addr.type != PF_ADDR_ADDRMASK ||
3515                             unmask(&b->addr.v.a.mask, b->af) !=
3516                             (b->af == AF_INET ? 32 : 128) ||
3517                             unmask(&e->addr.v.a.mask, e->af) !=
3518                             (e->af == AF_INET ? 32 : 128) ||
3519                             b->next != NULL || b->not ||
3520                             e->next != NULL || e->not) {
3521                                 free(b);
3522                                 free(e);
3523                                 free($1);
3524                                 free($3);
3525                                 yyerror("invalid address range");
3526                                 YYERROR;
3527                         }
3528                         memcpy(&b->addr.v.a.mask, &e->addr.v.a.addr,
3529                             sizeof(b->addr.v.a.mask));
3530                         b->addr.type = PF_ADDR_RANGE;
3531                         $$ = b;
3532                         free(e);
3533                         free($1);
3534                         free($3);
3535                 }
3536                 | STRING '/' NUMBER             {
3537                         char    *buf;
3538
3539                         if (asprintf(&buf, "%s/%lld", $1, (long long)$3) == -1)
3540                                 err(1, "host: asprintf");
3541                         free($1);
3542                         if (($$ = host(buf)) == NULL)   {
3543                                 /* error. "any" is handled elsewhere */
3544                                 free(buf);
3545                                 yyerror("could not parse host specification");
3546                                 YYERROR;
3547                         }
3548                         free(buf);
3549                 }
3550                 | NUMBER '/' NUMBER             {
3551                         char    *buf;
3552
3553                         /* ie. for 10/8 parsing */
3554 #ifdef __FreeBSD__
3555                         if (asprintf(&buf, "%lld/%lld", (long long)$1, (long long)$3) == -1)
3556 #else
3557                         if (asprintf(&buf, "%lld/%lld", $1, $3) == -1)
3558 #endif
3559                                 err(1, "host: asprintf");
3560                         if (($$ = host(buf)) == NULL)   {
3561                                 /* error. "any" is handled elsewhere */
3562                                 free(buf);
3563                                 yyerror("could not parse host specification");
3564                                 YYERROR;
3565                         }
3566                         free(buf);
3567                 }
3568                 | dynaddr
3569                 | dynaddr '/' NUMBER            {
3570                         struct node_host        *n;
3571
3572                         if ($3 < 0 || $3 > 128) {
3573                                 yyerror("bit number too big");
3574                                 YYERROR;
3575                         }
3576                         $$ = $1;
3577                         for (n = $1; n != NULL; n = n->next)
3578                                 set_ipmask(n, $3);
3579                 }
3580                 | '<' STRING '>'        {
3581                         if (strlen($2) >= PF_TABLE_NAME_SIZE) {
3582                                 yyerror("table name '%s' too long", $2);
3583                                 free($2);
3584                                 YYERROR;
3585                         }
3586                         $$ = calloc(1, sizeof(struct node_host));
3587                         if ($$ == NULL)
3588                                 err(1, "host: calloc");
3589                         $$->addr.type = PF_ADDR_TABLE;
3590                         if (strlcpy($$->addr.v.tblname, $2,
3591                             sizeof($$->addr.v.tblname)) >=
3592                             sizeof($$->addr.v.tblname))
3593                                 errx(1, "host: strlcpy");
3594                         free($2);
3595                         $$->next = NULL;
3596                         $$->tail = $$;
3597                 }
3598                 ;
3599
3600 number          : NUMBER
3601                 | STRING                {
3602                         u_long  ulval;
3603
3604                         if (atoul($1, &ulval) == -1) {
3605                                 yyerror("%s is not a number", $1);
3606                                 free($1);
3607                                 YYERROR;
3608                         } else
3609                                 $$ = ulval;
3610                         free($1);
3611                 }
3612                 ;
3613
3614 dynaddr         : '(' STRING ')'                {
3615                         int      flags = 0;
3616                         char    *p, *op;
3617
3618                         op = $2;
3619                         if (!isalpha(op[0])) {
3620                                 yyerror("invalid interface name '%s'", op);
3621                                 free(op);
3622                                 YYERROR;
3623                         }
3624                         while ((p = strrchr($2, ':')) != NULL) {
3625                                 if (!strcmp(p+1, "network"))
3626                                         flags |= PFI_AFLAG_NETWORK;
3627                                 else if (!strcmp(p+1, "broadcast"))
3628                                         flags |= PFI_AFLAG_BROADCAST;
3629                                 else if (!strcmp(p+1, "peer"))
3630                                         flags |= PFI_AFLAG_PEER;
3631                                 else if (!strcmp(p+1, "0"))
3632                                         flags |= PFI_AFLAG_NOALIAS;
3633                                 else {
3634                                         yyerror("interface %s has bad modifier",
3635                                             $2);
3636                                         free(op);
3637                                         YYERROR;
3638                                 }
3639                                 *p = '\0';
3640                         }
3641                         if (flags & (flags - 1) & PFI_AFLAG_MODEMASK) {
3642                                 free(op);
3643                                 yyerror("illegal combination of "
3644                                     "interface modifiers");
3645                                 YYERROR;
3646                         }
3647                         $$ = calloc(1, sizeof(struct node_host));
3648                         if ($$ == NULL)
3649                                 err(1, "address: calloc");
3650                         $$->af = 0;
3651                         set_ipmask($$, 128);
3652                         $$->addr.type = PF_ADDR_DYNIFTL;
3653                         $$->addr.iflags = flags;
3654                         if (strlcpy($$->addr.v.ifname, $2,
3655                             sizeof($$->addr.v.ifname)) >=
3656                             sizeof($$->addr.v.ifname)) {
3657                                 free(op);
3658                                 free($$);
3659                                 yyerror("interface name too long");
3660                                 YYERROR;
3661                         }
3662                         free(op);
3663                         $$->next = NULL;
3664                         $$->tail = $$;
3665                 }
3666                 ;
3667
3668 portspec        : port_item                     { $$ = $1; }
3669                 | '{' optnl port_list '}'       { $$ = $3; }
3670                 ;
3671
3672 port_list       : port_item optnl               { $$ = $1; }
3673                 | port_list comma port_item optnl       {
3674                         $1->tail->next = $3;
3675                         $1->tail = $3;
3676                         $$ = $1;
3677                 }
3678                 ;
3679
3680 port_item       : portrange                     {
3681                         $$ = calloc(1, sizeof(struct node_port));
3682                         if ($$ == NULL)
3683                                 err(1, "port_item: calloc");
3684                         $$->port[0] = $1.a;
3685                         $$->port[1] = $1.b;
3686                         if ($1.t)
3687                                 $$->op = PF_OP_RRG;
3688                         else
3689                                 $$->op = PF_OP_EQ;
3690                         $$->next = NULL;
3691                         $$->tail = $$;
3692                 }
3693                 | unaryop portrange     {
3694                         if ($2.t) {
3695                                 yyerror("':' cannot be used with an other "
3696                                     "port operator");
3697                                 YYERROR;
3698                         }
3699                         $$ = calloc(1, sizeof(struct node_port));
3700                         if ($$ == NULL)
3701                                 err(1, "port_item: calloc");
3702                         $$->port[0] = $2.a;
3703                         $$->port[1] = $2.b;
3704                         $$->op = $1;
3705                         $$->next = NULL;
3706                         $$->tail = $$;
3707                 }
3708                 | portrange PORTBINARY portrange        {
3709                         if ($1.t || $3.t) {
3710                                 yyerror("':' cannot be used with an other "
3711                                     "port operator");
3712                                 YYERROR;
3713                         }
3714                         $$ = calloc(1, sizeof(struct node_port));
3715                         if ($$ == NULL)
3716                                 err(1, "port_item: calloc");
3717                         $$->port[0] = $1.a;
3718                         $$->port[1] = $3.a;
3719                         $$->op = $2;
3720                         $$->next = NULL;
3721                         $$->tail = $$;
3722                 }
3723                 ;
3724
3725 portplain       : numberstring                  {
3726                         if (parseport($1, &$$, 0) == -1) {
3727                                 free($1);
3728                                 YYERROR;
3729                         }
3730                         free($1);
3731                 }
3732                 ;
3733
3734 portrange       : numberstring                  {
3735                         if (parseport($1, &$$, PPORT_RANGE) == -1) {
3736                                 free($1);
3737                                 YYERROR;
3738                         }
3739                         free($1);
3740                 }
3741                 ;
3742
3743 uids            : uid_item                      { $$ = $1; }
3744                 | '{' optnl uid_list '}'        { $$ = $3; }
3745                 ;
3746
3747 uid_list        : uid_item optnl                { $$ = $1; }
3748                 | uid_list comma uid_item optnl {
3749                         $1->tail->next = $3;
3750                         $1->tail = $3;
3751                         $$ = $1;
3752                 }
3753                 ;
3754
3755 uid_item        : uid                           {
3756                         $$ = calloc(1, sizeof(struct node_uid));
3757                         if ($$ == NULL)
3758                                 err(1, "uid_item: calloc");
3759                         $$->uid[0] = $1;
3760                         $$->uid[1] = $1;
3761                         $$->op = PF_OP_EQ;
3762                         $$->next = NULL;
3763                         $$->tail = $$;
3764                 }
3765                 | unaryop uid                   {
3766                         if ($2 == UID_MAX && $1 != PF_OP_EQ && $1 != PF_OP_NE) {
3767                                 yyerror("user unknown requires operator = or "
3768                                     "!=");
3769                                 YYERROR;
3770                         }
3771                         $$ = calloc(1, sizeof(struct node_uid));
3772                         if ($$ == NULL)
3773                                 err(1, "uid_item: calloc");
3774                         $$->uid[0] = $2;
3775                         $$->uid[1] = $2;
3776                         $$->op = $1;
3777                         $$->next = NULL;
3778                         $$->tail = $$;
3779                 }
3780                 | uid PORTBINARY uid            {
3781                         if ($1 == UID_MAX || $3 == UID_MAX) {
3782                                 yyerror("user unknown requires operator = or "
3783                                     "!=");
3784                                 YYERROR;
3785                         }
3786                         $$ = calloc(1, sizeof(struct node_uid));
3787                         if ($$ == NULL)
3788                                 err(1, "uid_item: calloc");
3789                         $$->uid[0] = $1;
3790                         $$->uid[1] = $3;
3791                         $$->op = $2;
3792                         $$->next = NULL;
3793                         $$->tail = $$;
3794                 }
3795                 ;
3796
3797 uid             : STRING                        {
3798                         if (!strcmp($1, "unknown"))
3799                                 $$ = UID_MAX;
3800                         else {
3801                                 struct passwd   *pw;
3802
3803                                 if ((pw = getpwnam($1)) == NULL) {
3804                                         yyerror("unknown user %s", $1);
3805                                         free($1);
3806                                         YYERROR;
3807                                 }
3808                                 $$ = pw->pw_uid;
3809                         }
3810                         free($1);
3811                 }
3812                 | NUMBER                        {
3813                         if ($1 < 0 || $1 >= UID_MAX) {
3814                                 yyerror("illegal uid value %lu", $1);
3815                                 YYERROR;
3816                         }
3817                         $$ = $1;
3818                 }
3819                 ;
3820
3821 gids            : gid_item                      { $$ = $1; }
3822                 | '{' optnl gid_list '}'        { $$ = $3; }
3823                 ;
3824
3825 gid_list        : gid_item optnl                { $$ = $1; }
3826                 | gid_list comma gid_item optnl {
3827                         $1->tail->next = $3;
3828                         $1->tail = $3;
3829                         $$ = $1;
3830                 }
3831                 ;
3832
3833 gid_item        : gid                           {
3834                         $$ = calloc(1, sizeof(struct node_gid));
3835                         if ($$ == NULL)
3836                                 err(1, "gid_item: calloc");
3837                         $$->gid[0] = $1;
3838                         $$->gid[1] = $1;
3839                         $$->op = PF_OP_EQ;
3840                         $$->next = NULL;
3841                         $$->tail = $$;
3842                 }
3843                 | unaryop gid                   {
3844                         if ($2 == GID_MAX && $1 != PF_OP_EQ && $1 != PF_OP_NE) {
3845                                 yyerror("group unknown requires operator = or "
3846                                     "!=");
3847                                 YYERROR;
3848                         }
3849                         $$ = calloc(1, sizeof(struct node_gid));
3850                         if ($$ == NULL)
3851                                 err(1, "gid_item: calloc");
3852                         $$->gid[0] = $2;
3853                         $$->gid[1] = $2;
3854                         $$->op = $1;
3855                         $$->next = NULL;
3856                         $$->tail = $$;
3857                 }
3858                 | gid PORTBINARY gid            {
3859                         if ($1 == GID_MAX || $3 == GID_MAX) {
3860                                 yyerror("group unknown requires operator = or "
3861                                     "!=");
3862                                 YYERROR;
3863                         }
3864                         $$ = calloc(1, sizeof(struct node_gid));
3865                         if ($$ == NULL)
3866                                 err(1, "gid_item: calloc");
3867                         $$->gid[0] = $1;
3868                         $$->gid[1] = $3;
3869                         $$->op = $2;
3870                         $$->next = NULL;
3871                         $$->tail = $$;
3872                 }
3873                 ;
3874
3875 gid             : STRING                        {
3876                         if (!strcmp($1, "unknown"))
3877                                 $$ = GID_MAX;
3878                         else {
3879                                 struct group    *grp;
3880
3881                                 if ((grp = getgrnam($1)) == NULL) {
3882                                         yyerror("unknown group %s", $1);
3883                                         free($1);
3884                                         YYERROR;
3885                                 }
3886                                 $$ = grp->gr_gid;
3887                         }
3888                         free($1);
3889                 }
3890                 | NUMBER                        {
3891                         if ($1 < 0 || $1 >= GID_MAX) {
3892                                 yyerror("illegal gid value %lu", $1);
3893                                 YYERROR;
3894                         }
3895                         $$ = $1;
3896                 }
3897                 ;
3898
3899 flag            : STRING                        {
3900                         int     f;
3901
3902                         if ((f = parse_flags($1)) < 0) {
3903                                 yyerror("bad flags %s", $1);
3904                                 free($1);
3905                                 YYERROR;
3906                         }
3907                         free($1);
3908                         $$.b1 = f;
3909                 }
3910                 ;
3911
3912 flags           : FLAGS flag '/' flag   { $$.b1 = $2.b1; $$.b2 = $4.b1; }
3913                 | FLAGS '/' flag        { $$.b1 = 0; $$.b2 = $3.b1; }
3914                 | FLAGS ANY             { $$.b1 = 0; $$.b2 = 0; }
3915                 ;
3916
3917 icmpspec        : ICMPTYPE icmp_item                    { $$ = $2; }
3918                 | ICMPTYPE '{' optnl icmp_list '}'      { $$ = $4; }
3919                 | ICMP6TYPE icmp6_item                  { $$ = $2; }
3920                 | ICMP6TYPE '{' optnl icmp6_list '}'    { $$ = $4; }
3921                 ;
3922
3923 icmp_list       : icmp_item optnl               { $$ = $1; }
3924                 | icmp_list comma icmp_item optnl {
3925                         $1->tail->next = $3;
3926                         $1->tail = $3;
3927                         $$ = $1;
3928                 }
3929                 ;
3930
3931 icmp6_list      : icmp6_item optnl              { $$ = $1; }
3932                 | icmp6_list comma icmp6_item optnl {
3933                         $1->tail->next = $3;
3934                         $1->tail = $3;
3935                         $$ = $1;
3936                 }
3937                 ;
3938
3939 icmp_item       : icmptype              {
3940                         $$ = calloc(1, sizeof(struct node_icmp));
3941                         if ($$ == NULL)
3942                                 err(1, "icmp_item: calloc");
3943                         $$->type = $1;
3944                         $$->code = 0;
3945                         $$->proto = IPPROTO_ICMP;
3946                         $$->next = NULL;
3947                         $$->tail = $$;
3948                 }
3949                 | icmptype CODE STRING  {
3950                         const struct icmpcodeent        *p;
3951
3952                         if ((p = geticmpcodebyname($1-1, $3, AF_INET)) == NULL) {
3953                                 yyerror("unknown icmp-code %s", $3);
3954                                 free($3);
3955                                 YYERROR;
3956                         }
3957
3958                         free($3);
3959                         $$ = calloc(1, sizeof(struct node_icmp));
3960                         if ($$ == NULL)
3961                                 err(1, "icmp_item: calloc");
3962                         $$->type = $1;
3963                         $$->code = p->code + 1;
3964                         $$->proto = IPPROTO_ICMP;
3965                         $$->next = NULL;
3966                         $$->tail = $$;
3967                 }
3968                 | icmptype CODE NUMBER  {
3969                         if ($3 < 0 || $3 > 255) {
3970                                 yyerror("illegal icmp-code %lu", $3);
3971                                 YYERROR;
3972                         }
3973                         $$ = calloc(1, sizeof(struct node_icmp));
3974                         if ($$ == NULL)
3975                                 err(1, "icmp_item: calloc");
3976                         $$->type = $1;
3977                         $$->code = $3 + 1;
3978                         $$->proto = IPPROTO_ICMP;
3979                         $$->next = NULL;
3980                         $$->tail = $$;
3981                 }
3982                 ;
3983
3984 icmp6_item      : icmp6type             {
3985                         $$ = calloc(1, sizeof(struct node_icmp));
3986                         if ($$ == NULL)
3987                                 err(1, "icmp_item: calloc");
3988                         $$->type = $1;
3989                         $$->code = 0;
3990                         $$->proto = IPPROTO_ICMPV6;
3991                         $$->next = NULL;
3992                         $$->tail = $$;
3993                 }
3994                 | icmp6type CODE STRING {
3995                         const struct icmpcodeent        *p;
3996
3997                         if ((p = geticmpcodebyname($1-1, $3, AF_INET6)) == NULL) {
3998                                 yyerror("unknown icmp6-code %s", $3);
3999                                 free($3);
4000                                 YYERROR;
4001                         }
4002                         free($3);
4003
4004                         $$ = calloc(1, sizeof(struct node_icmp));
4005                         if ($$ == NULL)
4006                                 err(1, "icmp_item: calloc");
4007                         $$->type = $1;
4008                         $$->code = p->code + 1;
4009                         $$->proto = IPPROTO_ICMPV6;
4010                         $$->next = NULL;
4011                         $$->tail = $$;
4012                 }
4013                 | icmp6type CODE NUMBER {
4014                         if ($3 < 0 || $3 > 255) {
4015                                 yyerror("illegal icmp-code %lu", $3);
4016                                 YYERROR;
4017                         }
4018                         $$ = calloc(1, sizeof(struct node_icmp));
4019                         if ($$ == NULL)
4020                                 err(1, "icmp_item: calloc");
4021                         $$->type = $1;
4022                         $$->code = $3 + 1;
4023                         $$->proto = IPPROTO_ICMPV6;
4024                         $$->next = NULL;
4025                         $$->tail = $$;
4026                 }
4027                 ;
4028
4029 icmptype        : STRING                        {
4030                         const struct icmptypeent        *p;
4031
4032                         if ((p = geticmptypebyname($1, AF_INET)) == NULL) {
4033                                 yyerror("unknown icmp-type %s", $1);
4034                                 free($1);
4035                                 YYERROR;
4036                         }
4037                         $$ = p->type + 1;
4038                         free($1);
4039                 }
4040                 | NUMBER                        {
4041                         if ($1 < 0 || $1 > 255) {
4042                                 yyerror("illegal icmp-type %lu", $1);
4043                                 YYERROR;
4044                         }
4045                         $$ = $1 + 1;
4046                 }
4047                 ;
4048
4049 icmp6type       : STRING                        {
4050                         const struct icmptypeent        *p;
4051
4052                         if ((p = geticmptypebyname($1, AF_INET6)) ==
4053                             NULL) {
4054                                 yyerror("unknown icmp6-type %s", $1);
4055                                 free($1);
4056                                 YYERROR;
4057                         }
4058                         $$ = p->type + 1;
4059                         free($1);
4060                 }
4061                 | NUMBER                        {
4062                         if ($1 < 0 || $1 > 255) {
4063                                 yyerror("illegal icmp6-type %lu", $1);
4064                                 YYERROR;
4065                         }
4066                         $$ = $1 + 1;
4067                 }
4068                 ;
4069
4070 tos     : STRING                        {
4071                         int val;
4072                         char *end;
4073
4074                         if (map_tos($1, &val))
4075                                 $$ = val;
4076                         else if ($1[0] == '0' && $1[1] == 'x') {
4077                                 errno = 0;
4078                                 $$ = strtoul($1, &end, 16);
4079                                 if (errno || *end != '\0')
4080                                         $$ = 256;
4081                         } else
4082                                 $$ = 256;               /* flag bad argument */
4083                         if ($$ < 0 || $$ > 255) {
4084                                 yyerror("illegal tos value %s", $1);
4085                                 free($1);
4086                                 YYERROR;
4087                         }
4088                         free($1);
4089                 }
4090                 | NUMBER                        {
4091                         $$ = $1;
4092                         if ($$ < 0 || $$ > 255) {
4093                                 yyerror("illegal tos value %s", $1);
4094                                 YYERROR;
4095                         }
4096                 }
4097                 ;
4098
4099 sourcetrack     : SOURCETRACK           { $$ = PF_SRCTRACK; }
4100                 | SOURCETRACK GLOBAL    { $$ = PF_SRCTRACK_GLOBAL; }
4101                 | SOURCETRACK RULE      { $$ = PF_SRCTRACK_RULE; }
4102                 ;
4103
4104 statelock       : IFBOUND {
4105                         $$ = PFRULE_IFBOUND;
4106                 }
4107                 | FLOATING {
4108                         $$ = 0;
4109                 }
4110                 ;
4111
4112 keep            : NO STATE                      {
4113                         $$.action = 0;
4114                         $$.options = NULL;
4115                 }
4116                 | KEEP STATE state_opt_spec     {
4117                         $$.action = PF_STATE_NORMAL;
4118                         $$.options = $3;
4119                 }
4120                 | MODULATE STATE state_opt_spec {
4121                         $$.action = PF_STATE_MODULATE;
4122                         $$.options = $3;
4123                 }
4124                 | SYNPROXY STATE state_opt_spec {
4125                         $$.action = PF_STATE_SYNPROXY;
4126                         $$.options = $3;
4127                 }
4128                 ;
4129
4130 flush           : /* empty */                   { $$ = 0; }
4131                 | FLUSH                         { $$ = PF_FLUSH; }
4132                 | FLUSH GLOBAL                  {
4133                         $$ = PF_FLUSH | PF_FLUSH_GLOBAL;
4134                 }
4135                 ;
4136
4137 state_opt_spec  : '(' state_opt_list ')'        { $$ = $2; }
4138                 | /* empty */                   { $$ = NULL; }
4139                 ;
4140
4141 state_opt_list  : state_opt_item                { $$ = $1; }
4142                 | state_opt_list comma state_opt_item {
4143                         $1->tail->next = $3;
4144                         $1->tail = $3;
4145                         $$ = $1;
4146                 }
4147                 ;
4148
4149 state_opt_item  : MAXIMUM NUMBER                {
4150                         if ($2 < 0 || $2 > UINT_MAX) {
4151                                 yyerror("only positive values permitted");
4152                                 YYERROR;
4153                         }
4154                         $$ = calloc(1, sizeof(struct node_state_opt));
4155                         if ($$ == NULL)
4156                                 err(1, "state_opt_item: calloc");
4157                         $$->type = PF_STATE_OPT_MAX;
4158                         $$->data.max_states = $2;
4159                         $$->next = NULL;
4160                         $$->tail = $$;
4161                 }
4162                 | NOSYNC                                {
4163                         $$ = calloc(1, sizeof(struct node_state_opt));
4164                         if ($$ == NULL)
4165                                 err(1, "state_opt_item: calloc");
4166                         $$->type = PF_STATE_OPT_NOSYNC;
4167                         $$->next = NULL;
4168                         $$->tail = $$;
4169                 }
4170                 | MAXSRCSTATES NUMBER                   {
4171                         if ($2 < 0 || $2 > UINT_MAX) {
4172                                 yyerror("only positive values permitted");
4173                                 YYERROR;
4174                         }
4175                         $$ = calloc(1, sizeof(struct node_state_opt));
4176                         if ($$ == NULL)
4177                                 err(1, "state_opt_item: calloc");
4178                         $$->type = PF_STATE_OPT_MAX_SRC_STATES;
4179                         $$->data.max_src_states = $2;
4180                         $$->next = NULL;
4181                         $$->tail = $$;
4182                 }
4183                 | MAXSRCCONN NUMBER                     {
4184                         if ($2 < 0 || $2 > UINT_MAX) {
4185                                 yyerror("only positive values permitted");
4186                                 YYERROR;
4187                         }
4188                         $$ = calloc(1, sizeof(struct node_state_opt));
4189                         if ($$ == NULL)
4190                                 err(1, "state_opt_item: calloc");
4191                         $$->type = PF_STATE_OPT_MAX_SRC_CONN;
4192                         $$->data.max_src_conn = $2;
4193                         $$->next = NULL;
4194                         $$->tail = $$;
4195                 }
4196                 | MAXSRCCONNRATE NUMBER '/' NUMBER      {
4197                         if ($2 < 0 || $2 > UINT_MAX ||
4198                             $4 < 0 || $4 > UINT_MAX) {
4199                                 yyerror("only positive values permitted");
4200                                 YYERROR;
4201                         }
4202                         $$ = calloc(1, sizeof(struct node_state_opt));
4203                         if ($$ == NULL)
4204                                 err(1, "state_opt_item: calloc");
4205                         $$->type = PF_STATE_OPT_MAX_SRC_CONN_RATE;
4206                         $$->data.max_src_conn_rate.limit = $2;
4207                         $$->data.max_src_conn_rate.seconds = $4;
4208                         $$->next = NULL;
4209                         $$->tail = $$;
4210                 }
4211                 | OVERLOAD '<' STRING '>' flush         {
4212                         if (strlen($3) >= PF_TABLE_NAME_SIZE) {
4213                                 yyerror("table name '%s' too long", $3);
4214                                 free($3);
4215                                 YYERROR;
4216                         }
4217                         $$ = calloc(1, sizeof(struct node_state_opt));
4218                         if ($$ == NULL)
4219                                 err(1, "state_opt_item: calloc");
4220                         if (strlcpy($$->data.overload.tblname, $3,
4221                             PF_TABLE_NAME_SIZE) >= PF_TABLE_NAME_SIZE)
4222                                 errx(1, "state_opt_item: strlcpy");
4223                         free($3);
4224                         $$->type = PF_STATE_OPT_OVERLOAD;
4225                         $$->data.overload.flush = $5;
4226                         $$->next = NULL;
4227                         $$->tail = $$;
4228                 }
4229                 | MAXSRCNODES NUMBER                    {
4230                         if ($2 < 0 || $2 > UINT_MAX) {
4231                                 yyerror("only positive values permitted");
4232                                 YYERROR;
4233                         }
4234                         $$ = calloc(1, sizeof(struct node_state_opt));
4235                         if ($$ == NULL)
4236                                 err(1, "state_opt_item: calloc");
4237                         $$->type = PF_STATE_OPT_MAX_SRC_NODES;
4238                         $$->data.max_src_nodes = $2;
4239                         $$->next = NULL;
4240                         $$->tail = $$;
4241                 }
4242                 | sourcetrack {
4243                         $$ = calloc(1, sizeof(struct node_state_opt));
4244                         if ($$ == NULL)
4245                                 err(1, "state_opt_item: calloc");
4246                         $$->type = PF_STATE_OPT_SRCTRACK;
4247                         $$->data.src_track = $1;
4248                         $$->next = NULL;
4249                         $$->tail = $$;
4250                 }
4251                 | statelock {
4252                         $$ = calloc(1, sizeof(struct node_state_opt));
4253                         if ($$ == NULL)
4254                                 err(1, "state_opt_item: calloc");
4255                         $$->type = PF_STATE_OPT_STATELOCK;
4256                         $$->data.statelock = $1;
4257                         $$->next = NULL;
4258                         $$->tail = $$;
4259                 }
4260                 | SLOPPY {
4261                         $$ = calloc(1, sizeof(struct node_state_opt));
4262                         if ($$ == NULL)
4263                                 err(1, "state_opt_item: calloc");
4264                         $$->type = PF_STATE_OPT_SLOPPY;
4265                         $$->next = NULL;
4266                         $$->tail = $$;
4267                 }
4268                 | STRING NUMBER                 {
4269                         int     i;
4270
4271                         if ($2 < 0 || $2 > UINT_MAX) {
4272                                 yyerror("only positive values permitted");
4273                                 YYERROR;
4274                         }
4275                         for (i = 0; pf_timeouts[i].name &&
4276                             strcmp(pf_timeouts[i].name, $1); ++i)
4277                                 ;       /* nothing */
4278                         if (!pf_timeouts[i].name) {
4279                                 yyerror("illegal timeout name %s", $1);
4280                                 free($1);
4281                                 YYERROR;
4282                         }
4283                         if (strchr(pf_timeouts[i].name, '.') == NULL) {
4284                                 yyerror("illegal state timeout %s", $1);
4285                                 free($1);
4286                                 YYERROR;
4287                         }
4288                         free($1);
4289                         $$ = calloc(1, sizeof(struct node_state_opt));
4290                         if ($$ == NULL)
4291                                 err(1, "state_opt_item: calloc");
4292                         $$->type = PF_STATE_OPT_TIMEOUT;
4293                         $$->data.timeout.number = pf_timeouts[i].timeout;
4294                         $$->data.timeout.seconds = $2;
4295                         $$->next = NULL;
4296                         $$->tail = $$;
4297                 }
4298                 ;
4299
4300 label           : LABEL STRING                  {
4301                         $$ = $2;
4302                 }
4303                 ;
4304
4305 etherqname      : QUEUE STRING                          {
4306                         $$.qname = $2;
4307                 }
4308                 | QUEUE '(' STRING ')'                  {
4309                         $$.qname = $3;
4310                 }
4311                 ;
4312
4313 qname           : QUEUE STRING                          {
4314                         $$.qname = $2;
4315                         $$.pqname = NULL;
4316                 }
4317                 | QUEUE '(' STRING ')'                  {
4318                         $$.qname = $3;
4319                         $$.pqname = NULL;
4320                 }
4321                 | QUEUE '(' STRING comma STRING ')'     {
4322                         $$.qname = $3;
4323                         $$.pqname = $5;
4324                 }
4325                 ;
4326
4327 no              : /* empty */                   { $$ = 0; }
4328                 | NO                            { $$ = 1; }
4329                 ;
4330
4331 portstar        : numberstring                  {
4332                         if (parseport($1, &$$, PPORT_RANGE|PPORT_STAR) == -1) {
4333                                 free($1);
4334                                 YYERROR;
4335                         }
4336                         free($1);
4337                 }
4338                 ;
4339
4340 redirspec       : host                          { $$ = $1; }
4341                 | '{' optnl redir_host_list '}' { $$ = $3; }
4342                 ;
4343
4344 redir_host_list : host optnl                    { $$ = $1; }
4345                 | redir_host_list comma host optnl {
4346                         $1->tail->next = $3;
4347                         $1->tail = $3->tail;
4348                         $$ = $1;
4349                 }
4350                 ;
4351
4352 redirpool       : /* empty */                   { $$ = NULL; }
4353                 | ARROW redirspec               {
4354                         $$ = calloc(1, sizeof(struct redirection));
4355                         if ($$ == NULL)
4356                                 err(1, "redirection: calloc");
4357                         $$->host = $2;
4358                         $$->rport.a = $$->rport.b = $$->rport.t = 0;
4359                 }
4360                 | ARROW redirspec PORT portstar {
4361                         $$ = calloc(1, sizeof(struct redirection));
4362                         if ($$ == NULL)
4363                                 err(1, "redirection: calloc");
4364                         $$->host = $2;
4365                         $$->rport = $4;
4366                 }
4367                 ;
4368
4369 hashkey         : /* empty */
4370                 {
4371                         $$ = calloc(1, sizeof(struct pf_poolhashkey));
4372                         if ($$ == NULL)
4373                                 err(1, "hashkey: calloc");
4374                         $$->key32[0] = arc4random();
4375                         $$->key32[1] = arc4random();
4376                         $$->key32[2] = arc4random();
4377                         $$->key32[3] = arc4random();
4378                 }
4379                 | string
4380                 {
4381                         if (!strncmp($1, "0x", 2)) {
4382                                 if (strlen($1) != 34) {
4383                                         free($1);
4384                                         yyerror("hex key must be 128 bits "
4385                                                 "(32 hex digits) long");
4386                                         YYERROR;
4387                                 }
4388                                 $$ = calloc(1, sizeof(struct pf_poolhashkey));
4389                                 if ($$ == NULL)
4390                                         err(1, "hashkey: calloc");
4391
4392                                 if (sscanf($1, "0x%8x%8x%8x%8x",
4393                                     &$$->key32[0], &$$->key32[1],
4394                                     &$$->key32[2], &$$->key32[3]) != 4) {
4395                                         free($$);
4396                                         free($1);
4397                                         yyerror("invalid hex key");
4398                                         YYERROR;
4399                                 }
4400                         } else {
4401                                 MD5_CTX context;
4402
4403                                 $$ = calloc(1, sizeof(struct pf_poolhashkey));
4404                                 if ($$ == NULL)
4405                                         err(1, "hashkey: calloc");
4406                                 MD5Init(&context);
4407                                 MD5Update(&context, (unsigned char *)$1,
4408                                     strlen($1));
4409                                 MD5Final((unsigned char *)$$, &context);
4410                                 HTONL($$->key32[0]);
4411                                 HTONL($$->key32[1]);
4412                                 HTONL($$->key32[2]);
4413                                 HTONL($$->key32[3]);
4414                         }
4415                         free($1);
4416                 }
4417                 ;
4418
4419 pool_opts       :       { bzero(&pool_opts, sizeof pool_opts); }
4420                     pool_opts_l
4421                         { $$ = pool_opts; }
4422                 | /* empty */   {
4423                         bzero(&pool_opts, sizeof pool_opts);
4424                         $$ = pool_opts;
4425                 }
4426                 ;
4427
4428 pool_opts_l     : pool_opts_l pool_opt
4429                 | pool_opt
4430                 ;
4431
4432 pool_opt        : BITMASK       {
4433                         if (pool_opts.type) {
4434                                 yyerror("pool type cannot be redefined");
4435                                 YYERROR;
4436                         }
4437                         pool_opts.type =  PF_POOL_BITMASK;
4438                 }
4439                 | RANDOM        {
4440                         if (pool_opts.type) {
4441                                 yyerror("pool type cannot be redefined");
4442                                 YYERROR;
4443                         }
4444                         pool_opts.type = PF_POOL_RANDOM;
4445                 }
4446                 | SOURCEHASH hashkey {
4447                         if (pool_opts.type) {
4448                                 yyerror("pool type cannot be redefined");
4449                                 YYERROR;
4450                         }
4451                         pool_opts.type = PF_POOL_SRCHASH;
4452                         pool_opts.key = $2;
4453                 }
4454                 | ROUNDROBIN    {
4455                         if (pool_opts.type) {
4456                                 yyerror("pool type cannot be redefined");
4457                                 YYERROR;
4458                         }
4459                         pool_opts.type = PF_POOL_ROUNDROBIN;
4460                 }
4461                 | STATICPORT    {
4462                         if (pool_opts.staticport) {
4463                                 yyerror("static-port cannot be redefined");
4464                                 YYERROR;
4465                         }
4466                         pool_opts.staticport = 1;
4467                 }
4468                 | STICKYADDRESS {
4469                         if (filter_opts.marker & POM_STICKYADDRESS) {
4470                                 yyerror("sticky-address cannot be redefined");
4471                                 YYERROR;
4472                         }
4473                         pool_opts.marker |= POM_STICKYADDRESS;
4474                         pool_opts.opts |= PF_POOL_STICKYADDR;
4475                 }
4476                 | MAPEPORTSET number '/' number '/' number {
4477                         if (pool_opts.mape.offset) {
4478                                 yyerror("map-e-portset cannot be redefined");
4479                                 YYERROR;
4480                         }
4481                         if (pool_opts.type) {
4482                                 yyerror("map-e-portset cannot be used with "
4483                                         "address pools");
4484                                 YYERROR;
4485                         }
4486                         if ($2 <= 0 || $2 >= 16) {
4487                                 yyerror("MAP-E PSID offset must be 1-15");
4488                                 YYERROR;
4489                         }
4490                         if ($4 < 0 || $4 >= 16 || $2 + $4 > 16) {
4491                                 yyerror("Invalid MAP-E PSID length");
4492                                 YYERROR;
4493                         } else if ($4 == 0) {
4494                                 yyerror("PSID Length = 0: this means"
4495                                     " you do not need MAP-E");
4496                                 YYERROR;
4497                         }
4498                         if ($6 < 0 || $6 > 65535) {
4499                                 yyerror("Invalid MAP-E PSID");
4500                                 YYERROR;
4501                         }
4502                         pool_opts.mape.offset = $2;
4503                         pool_opts.mape.psidlen = $4;
4504                         pool_opts.mape.psid = $6;
4505                 }
4506                 ;
4507
4508 redirection     : /* empty */                   { $$ = NULL; }
4509                 | ARROW host                    {
4510                         $$ = calloc(1, sizeof(struct redirection));
4511                         if ($$ == NULL)
4512                                 err(1, "redirection: calloc");
4513                         $$->host = $2;
4514                         $$->rport.a = $$->rport.b = $$->rport.t = 0;
4515                 }
4516                 | ARROW host PORT portstar      {
4517                         $$ = calloc(1, sizeof(struct redirection));
4518                         if ($$ == NULL)
4519                                 err(1, "redirection: calloc");
4520                         $$->host = $2;
4521                         $$->rport = $4;
4522                 }
4523                 ;
4524
4525 natpasslog      : /* empty */   { $$.b1 = $$.b2 = 0; $$.w2 = 0; }
4526                 | PASS          { $$.b1 = 1; $$.b2 = 0; $$.w2 = 0; }
4527                 | PASS log      { $$.b1 = 1; $$.b2 = $2.log; $$.w2 = $2.logif; }
4528                 | log           { $$.b1 = 0; $$.b2 = $1.log; $$.w2 = $1.logif; }
4529                 ;
4530
4531 nataction       : no NAT natpasslog {
4532                         if ($1 && $3.b1) {
4533                                 yyerror("\"pass\" not valid with \"no\"");
4534                                 YYERROR;
4535                         }
4536                         if ($1)
4537                                 $$.b1 = PF_NONAT;
4538                         else
4539                                 $$.b1 = PF_NAT;
4540                         $$.b2 = $3.b1;
4541                         $$.w = $3.b2;
4542                         $$.w2 = $3.w2;
4543                 }
4544                 | no RDR natpasslog {
4545                         if ($1 && $3.b1) {
4546                                 yyerror("\"pass\" not valid with \"no\"");
4547                                 YYERROR;
4548                         }
4549                         if ($1)
4550                                 $$.b1 = PF_NORDR;
4551                         else
4552                                 $$.b1 = PF_RDR;
4553                         $$.b2 = $3.b1;
4554                         $$.w = $3.b2;
4555                         $$.w2 = $3.w2;
4556                 }
4557                 ;
4558
4559 natrule         : nataction interface af proto fromto tag tagged rtable
4560                     redirpool pool_opts
4561                 {
4562                         struct pfctl_rule       r;
4563
4564                         if (check_rulestate(PFCTL_STATE_NAT))
4565                                 YYERROR;
4566
4567                         memset(&r, 0, sizeof(r));
4568
4569                         r.action = $1.b1;
4570                         r.natpass = $1.b2;
4571                         r.log = $1.w;
4572                         r.logif = $1.w2;
4573                         r.af = $3;
4574
4575                         if (!r.af) {
4576                                 if ($5.src.host && $5.src.host->af &&
4577                                     !$5.src.host->ifindex)
4578                                         r.af = $5.src.host->af;
4579                                 else if ($5.dst.host && $5.dst.host->af &&
4580                                     !$5.dst.host->ifindex)
4581                                         r.af = $5.dst.host->af;
4582                         }
4583
4584                         if ($6 != NULL)
4585                                 if (strlcpy(r.tagname, $6, PF_TAG_NAME_SIZE) >=
4586                                     PF_TAG_NAME_SIZE) {
4587                                         yyerror("tag too long, max %u chars",
4588                                             PF_TAG_NAME_SIZE - 1);
4589                                         YYERROR;
4590                                 }
4591
4592                         if ($7.name)
4593                                 if (strlcpy(r.match_tagname, $7.name,
4594                                     PF_TAG_NAME_SIZE) >= PF_TAG_NAME_SIZE) {
4595                                         yyerror("tag too long, max %u chars",
4596                                             PF_TAG_NAME_SIZE - 1);
4597                                         YYERROR;
4598                                 }
4599                         r.match_tag_not = $7.neg;
4600                         r.rtableid = $8;
4601
4602                         if (r.action == PF_NONAT || r.action == PF_NORDR) {
4603                                 if ($9 != NULL) {
4604                                         yyerror("translation rule with 'no' "
4605                                             "does not need '->'");
4606                                         YYERROR;
4607                                 }
4608                         } else {
4609                                 if ($9 == NULL || $9->host == NULL) {
4610                                         yyerror("translation rule requires '-> "
4611                                             "address'");
4612                                         YYERROR;
4613                                 }
4614                                 if (!r.af && ! $9->host->ifindex)
4615                                         r.af = $9->host->af;
4616
4617                                 remove_invalid_hosts(&$9->host, &r.af);
4618                                 if (invalid_redirect($9->host, r.af))
4619                                         YYERROR;
4620                                 if (check_netmask($9->host, r.af))
4621                                         YYERROR;
4622
4623                                 r.rpool.proxy_port[0] = ntohs($9->rport.a);
4624
4625                                 switch (r.action) {
4626                                 case PF_RDR:
4627                                         if (!$9->rport.b && $9->rport.t &&
4628                                             $5.dst.port != NULL) {
4629                                                 r.rpool.proxy_port[1] =
4630                                                     ntohs($9->rport.a) +
4631                                                     (ntohs(
4632                                                     $5.dst.port->port[1]) -
4633                                                     ntohs(
4634                                                     $5.dst.port->port[0]));
4635                                         } else
4636                                                 r.rpool.proxy_port[1] =
4637                                                     ntohs($9->rport.b);
4638                                         break;
4639                                 case PF_NAT:
4640                                         r.rpool.proxy_port[1] =
4641                                             ntohs($9->rport.b);
4642                                         if (!r.rpool.proxy_port[0] &&
4643                                             !r.rpool.proxy_port[1]) {
4644                                                 r.rpool.proxy_port[0] =
4645                                                     PF_NAT_PROXY_PORT_LOW;
4646                                                 r.rpool.proxy_port[1] =
4647                                                     PF_NAT_PROXY_PORT_HIGH;
4648                                         } else if (!r.rpool.proxy_port[1])
4649                                                 r.rpool.proxy_port[1] =
4650                                                     r.rpool.proxy_port[0];
4651                                         break;
4652                                 default:
4653                                         break;
4654                                 }
4655
4656                                 r.rpool.opts = $10.type;
4657                                 if ((r.rpool.opts & PF_POOL_TYPEMASK) ==
4658                                     PF_POOL_NONE && ($9->host->next != NULL ||
4659                                     $9->host->addr.type == PF_ADDR_TABLE ||
4660                                     DYNIF_MULTIADDR($9->host->addr)))
4661                                         r.rpool.opts = PF_POOL_ROUNDROBIN;
4662                                 if ((r.rpool.opts & PF_POOL_TYPEMASK) !=
4663                                     PF_POOL_ROUNDROBIN &&
4664                                     disallow_table($9->host, "tables are only "
4665                                     "supported in round-robin redirection "
4666                                     "pools"))
4667                                         YYERROR;
4668                                 if ((r.rpool.opts & PF_POOL_TYPEMASK) !=
4669                                     PF_POOL_ROUNDROBIN &&
4670                                     disallow_alias($9->host, "interface (%s) "
4671                                     "is only supported in round-robin "
4672                                     "redirection pools"))
4673                                         YYERROR;
4674                                 if ($9->host->next != NULL) {
4675                                         if ((r.rpool.opts & PF_POOL_TYPEMASK) !=
4676                                             PF_POOL_ROUNDROBIN) {
4677                                                 yyerror("only round-robin "
4678                                                     "valid for multiple "
4679                                                     "redirection addresses");
4680                                                 YYERROR;
4681                                         }
4682                                 }
4683                         }
4684
4685                         if ($10.key != NULL)
4686                                 memcpy(&r.rpool.key, $10.key,
4687                                     sizeof(struct pf_poolhashkey));
4688
4689                          if ($10.opts)
4690                                 r.rpool.opts |= $10.opts;
4691
4692                         if ($10.staticport) {
4693                                 if (r.action != PF_NAT) {
4694                                         yyerror("the 'static-port' option is "
4695                                             "only valid with nat rules");
4696                                         YYERROR;
4697                                 }
4698                                 if (r.rpool.proxy_port[0] !=
4699                                     PF_NAT_PROXY_PORT_LOW &&
4700                                     r.rpool.proxy_port[1] !=
4701                                     PF_NAT_PROXY_PORT_HIGH) {
4702                                         yyerror("the 'static-port' option can't"
4703                                             " be used when specifying a port"
4704                                             " range");
4705                                         YYERROR;
4706                                 }
4707                                 r.rpool.proxy_port[0] = 0;
4708                                 r.rpool.proxy_port[1] = 0;
4709                         }
4710
4711                         if ($10.mape.offset) {
4712                                 if (r.action != PF_NAT) {
4713                                         yyerror("the 'map-e-portset' option is"
4714                                             " only valid with nat rules");
4715                                         YYERROR;
4716                                 }
4717                                 if ($10.staticport) {
4718                                         yyerror("the 'map-e-portset' option"
4719                                             " can't be used 'static-port'");
4720                                         YYERROR;
4721                                 }
4722                                 if (r.rpool.proxy_port[0] !=
4723                                     PF_NAT_PROXY_PORT_LOW &&
4724                                     r.rpool.proxy_port[1] !=
4725                                     PF_NAT_PROXY_PORT_HIGH) {
4726                                         yyerror("the 'map-e-portset' option"
4727                                             " can't be used when specifying"
4728                                             " a port range");
4729                                         YYERROR;
4730                                 }
4731                                 r.rpool.mape = $10.mape;
4732                         }
4733
4734                         expand_rule(&r, $2, $9 == NULL ? NULL : $9->host, $4,
4735                             $5.src_os, $5.src.host, $5.src.port, $5.dst.host,
4736                             $5.dst.port, 0, 0, 0, "");
4737                         free($9);
4738                 }
4739                 ;
4740
4741 binatrule       : no BINAT natpasslog interface af proto FROM ipspec toipspec tag
4742                     tagged rtable redirection
4743                 {
4744                         struct pfctl_rule       binat;
4745                         struct pf_pooladdr      *pa;
4746
4747                         if (check_rulestate(PFCTL_STATE_NAT))
4748                                 YYERROR;
4749                         if (disallow_urpf_failed($9, "\"urpf-failed\" is not "
4750                             "permitted as a binat destination"))
4751                                 YYERROR;
4752
4753                         memset(&binat, 0, sizeof(binat));
4754
4755                         if ($1 && $3.b1) {
4756                                 yyerror("\"pass\" not valid with \"no\"");
4757                                 YYERROR;
4758                         }
4759                         if ($1)
4760                                 binat.action = PF_NOBINAT;
4761                         else
4762                                 binat.action = PF_BINAT;
4763                         binat.natpass = $3.b1;
4764                         binat.log = $3.b2;
4765                         binat.logif = $3.w2;
4766                         binat.af = $5;
4767                         if (!binat.af && $8 != NULL && $8->af)
4768                                 binat.af = $8->af;
4769                         if (!binat.af && $9 != NULL && $9->af)
4770                                 binat.af = $9->af;
4771
4772                         if (!binat.af && $13 != NULL && $13->host)
4773                                 binat.af = $13->host->af;
4774                         if (!binat.af) {
4775                                 yyerror("address family (inet/inet6) "
4776                                     "undefined");
4777                                 YYERROR;
4778                         }
4779
4780                         if ($4 != NULL) {
4781                                 memcpy(binat.ifname, $4->ifname,
4782                                     sizeof(binat.ifname));
4783                                 binat.ifnot = $4->not;
4784                                 free($4);
4785                         }
4786
4787                         if ($10 != NULL)
4788                                 if (strlcpy(binat.tagname, $10,
4789                                     PF_TAG_NAME_SIZE) >= PF_TAG_NAME_SIZE) {
4790                                         yyerror("tag too long, max %u chars",
4791                                             PF_TAG_NAME_SIZE - 1);
4792                                         YYERROR;
4793                                 }
4794                         if ($11.name)
4795                                 if (strlcpy(binat.match_tagname, $11.name,
4796                                     PF_TAG_NAME_SIZE) >= PF_TAG_NAME_SIZE) {
4797                                         yyerror("tag too long, max %u chars",
4798                                             PF_TAG_NAME_SIZE - 1);
4799                                         YYERROR;
4800                                 }
4801                         binat.match_tag_not = $11.neg;
4802                         binat.rtableid = $12;
4803
4804                         if ($6 != NULL) {
4805                                 binat.proto = $6->proto;
4806                                 free($6);
4807                         }
4808
4809                         if ($8 != NULL && disallow_table($8, "invalid use of "
4810                             "table <%s> as the source address of a binat rule"))
4811                                 YYERROR;
4812                         if ($8 != NULL && disallow_alias($8, "invalid use of "
4813                             "interface (%s) as the source address of a binat "
4814                             "rule"))
4815                                 YYERROR;
4816                         if ($13 != NULL && $13->host != NULL && disallow_table(
4817                             $13->host, "invalid use of table <%s> as the "
4818                             "redirect address of a binat rule"))
4819                                 YYERROR;
4820                         if ($13 != NULL && $13->host != NULL && disallow_alias(
4821                             $13->host, "invalid use of interface (%s) as the "
4822                             "redirect address of a binat rule"))
4823                                 YYERROR;
4824
4825                         if ($8 != NULL) {
4826                                 if ($8->next) {
4827                                         yyerror("multiple binat ip addresses");
4828                                         YYERROR;
4829                                 }
4830                                 if ($8->addr.type == PF_ADDR_DYNIFTL)
4831                                         $8->af = binat.af;
4832                                 if ($8->af != binat.af) {
4833                                         yyerror("binat ip versions must match");
4834                                         YYERROR;
4835                                 }
4836                                 if (check_netmask($8, binat.af))
4837                                         YYERROR;
4838                                 memcpy(&binat.src.addr, &$8->addr,
4839                                     sizeof(binat.src.addr));
4840                                 free($8);
4841                         }
4842                         if ($9 != NULL) {
4843                                 if ($9->next) {
4844                                         yyerror("multiple binat ip addresses");
4845                                         YYERROR;
4846                                 }
4847                                 if ($9->af != binat.af && $9->af) {
4848                                         yyerror("binat ip versions must match");
4849                                         YYERROR;
4850                                 }
4851                                 if (check_netmask($9, binat.af))
4852                                         YYERROR;
4853                                 memcpy(&binat.dst.addr, &$9->addr,
4854                                     sizeof(binat.dst.addr));
4855                                 binat.dst.neg = $9->not;
4856                                 free($9);
4857                         }
4858
4859                         if (binat.action == PF_NOBINAT) {
4860                                 if ($13 != NULL) {
4861                                         yyerror("'no binat' rule does not need"
4862                                             " '->'");
4863                                         YYERROR;
4864                                 }
4865                         } else {
4866                                 if ($13 == NULL || $13->host == NULL) {
4867                                         yyerror("'binat' rule requires"
4868                                             " '-> address'");
4869                                         YYERROR;
4870                                 }
4871
4872                                 remove_invalid_hosts(&$13->host, &binat.af);
4873                                 if (invalid_redirect($13->host, binat.af))
4874                                         YYERROR;
4875                                 if ($13->host->next != NULL) {
4876                                         yyerror("binat rule must redirect to "
4877                                             "a single address");
4878                                         YYERROR;
4879                                 }
4880                                 if (check_netmask($13->host, binat.af))
4881                                         YYERROR;
4882
4883                                 if (!PF_AZERO(&binat.src.addr.v.a.mask,
4884                                     binat.af) &&
4885                                     !PF_AEQ(&binat.src.addr.v.a.mask,
4886                                     &$13->host->addr.v.a.mask, binat.af)) {
4887                                         yyerror("'binat' source mask and "
4888                                             "redirect mask must be the same");
4889                                         YYERROR;
4890                                 }
4891
4892                                 TAILQ_INIT(&binat.rpool.list);
4893                                 pa = calloc(1, sizeof(struct pf_pooladdr));
4894                                 if (pa == NULL)
4895                                         err(1, "binat: calloc");
4896                                 pa->addr = $13->host->addr;
4897                                 pa->ifname[0] = 0;
4898                                 TAILQ_INSERT_TAIL(&binat.rpool.list,
4899                                     pa, entries);
4900
4901                                 free($13);
4902                         }
4903
4904                         pfctl_append_rule(pf, &binat, "");
4905                 }
4906                 ;
4907
4908 tag             : /* empty */           { $$ = NULL; }
4909                 | TAG STRING            { $$ = $2; }
4910                 ;
4911
4912 tagged          : /* empty */           { $$.neg = 0; $$.name = NULL; }
4913                 | not TAGGED string     { $$.neg = $1; $$.name = $3; }
4914                 ;
4915
4916 rtable          : /* empty */           { $$ = -1; }
4917                 | RTABLE NUMBER         {
4918                         if ($2 < 0 || $2 > rt_tableid_max()) {
4919                                 yyerror("invalid rtable id");
4920                                 YYERROR;
4921                         }
4922                         $$ = $2;
4923                 }
4924                 ;
4925
4926 route_host      : STRING                        {
4927                         $$ = calloc(1, sizeof(struct node_host));
4928                         if ($$ == NULL)
4929                                 err(1, "route_host: calloc");
4930                         if (strlen($1) >= IFNAMSIZ) {
4931                                 yyerror("interface name too long");
4932                                 YYERROR;
4933                         }
4934                         $$->ifname = strdup($1);
4935                         set_ipmask($$, 128);
4936                         $$->next = NULL;
4937                         $$->tail = $$;
4938                 }
4939                 | '(' STRING host ')'           {
4940                         struct node_host *n;
4941
4942                         $$ = $3;
4943                         for (n = $3; n != NULL; n = n->next) {
4944                                 if (strlen($2) >= IFNAMSIZ) {
4945                                         yyerror("interface name too long");
4946                                         YYERROR;
4947                                 }
4948                                 n->ifname = strdup($2);
4949                         }
4950                 }
4951                 ;
4952
4953 route_host_list : route_host optnl                      { $$ = $1; }
4954                 | route_host_list comma route_host optnl {
4955                         if ($1->af == 0)
4956                                 $1->af = $3->af;
4957                         if ($1->af != $3->af) {
4958                                 yyerror("all pool addresses must be in the "
4959                                     "same address family");
4960                                 YYERROR;
4961                         }
4962                         $1->tail->next = $3;
4963                         $1->tail = $3->tail;
4964                         $$ = $1;
4965                 }
4966                 ;
4967
4968 routespec       : route_host                    { $$ = $1; }
4969                 | '{' optnl route_host_list '}' { $$ = $3; }
4970                 ;
4971
4972 route           : /* empty */                   {
4973                         $$.host = NULL;
4974                         $$.rt = 0;
4975                         $$.pool_opts = 0;
4976                 }
4977                 | FASTROUTE {
4978                         /* backwards-compat */
4979                         $$.host = NULL;
4980                         $$.rt = 0;
4981                         $$.pool_opts = 0;
4982                 }
4983                 | ROUTETO routespec pool_opts {
4984                         $$.host = $2;
4985                         $$.rt = PF_ROUTETO;
4986                         $$.pool_opts = $3.type | $3.opts;
4987                         if ($3.key != NULL)
4988                                 $$.key = $3.key;
4989                 }
4990                 | REPLYTO routespec pool_opts {
4991                         $$.host = $2;
4992                         $$.rt = PF_REPLYTO;
4993                         $$.pool_opts = $3.type | $3.opts;
4994                         if ($3.key != NULL)
4995                                 $$.key = $3.key;
4996                 }
4997                 | DUPTO routespec pool_opts {
4998                         $$.host = $2;
4999                         $$.rt = PF_DUPTO;
5000                         $$.pool_opts = $3.type | $3.opts;
5001                         if ($3.key != NULL)
5002                                 $$.key = $3.key;
5003                 }
5004                 ;
5005
5006 timeout_spec    : STRING NUMBER
5007                 {
5008                         if (check_rulestate(PFCTL_STATE_OPTION)) {
5009                                 free($1);
5010                                 YYERROR;
5011                         }
5012                         if ($2 < 0 || $2 > UINT_MAX) {
5013                                 yyerror("only positive values permitted");
5014                                 YYERROR;
5015                         }
5016                         if (pfctl_set_timeout(pf, $1, $2, 0) != 0) {
5017                                 yyerror("unknown timeout %s", $1);
5018                                 free($1);
5019                                 YYERROR;
5020                         }
5021                         free($1);
5022                 }
5023                 | INTERVAL NUMBER               {
5024                         if (check_rulestate(PFCTL_STATE_OPTION))
5025                                 YYERROR;
5026                         if ($2 < 0 || $2 > UINT_MAX) {
5027                                 yyerror("only positive values permitted");
5028                                 YYERROR;
5029                         }
5030                         if (pfctl_set_timeout(pf, "interval", $2, 0) != 0)
5031                                 YYERROR;
5032                 }
5033                 ;
5034
5035 timeout_list    : timeout_list comma timeout_spec optnl
5036                 | timeout_spec optnl
5037                 ;
5038
5039 limit_spec      : STRING NUMBER
5040                 {
5041                         if (check_rulestate(PFCTL_STATE_OPTION)) {
5042                                 free($1);
5043                                 YYERROR;
5044                         }
5045                         if ($2 < 0 || $2 > UINT_MAX) {
5046                                 yyerror("only positive values permitted");
5047                                 YYERROR;
5048                         }
5049                         if (pfctl_set_limit(pf, $1, $2) != 0) {
5050                                 yyerror("unable to set limit %s %u", $1, $2);
5051                                 free($1);
5052                                 YYERROR;
5053                         }
5054                         free($1);
5055                 }
5056                 ;
5057
5058 limit_list      : limit_list comma limit_spec optnl
5059                 | limit_spec optnl
5060                 ;
5061
5062 comma           : ','
5063                 | /* empty */
5064                 ;
5065
5066 yesno           : NO                    { $$ = 0; }
5067                 | STRING                {
5068                         if (!strcmp($1, "yes"))
5069                                 $$ = 1;
5070                         else {
5071                                 yyerror("invalid value '%s', expected 'yes' "
5072                                     "or 'no'", $1);
5073                                 free($1);
5074                                 YYERROR;
5075                         }
5076                         free($1);
5077                 }
5078                 ;
5079
5080 unaryop         : '='           { $$ = PF_OP_EQ; }
5081                 | '!' '='       { $$ = PF_OP_NE; }
5082                 | '<' '='       { $$ = PF_OP_LE; }
5083                 | '<'           { $$ = PF_OP_LT; }
5084                 | '>' '='       { $$ = PF_OP_GE; }
5085                 | '>'           { $$ = PF_OP_GT; }
5086                 ;
5087
5088 %%
5089
5090 int
5091 yyerror(const char *fmt, ...)
5092 {
5093         va_list          ap;
5094
5095         file->errors++;
5096         va_start(ap, fmt);
5097         fprintf(stderr, "%s:%d: ", file->name, yylval.lineno);
5098         vfprintf(stderr, fmt, ap);
5099         fprintf(stderr, "\n");
5100         va_end(ap);
5101         return (0);
5102 }
5103
5104 int
5105 disallow_table(struct node_host *h, const char *fmt)
5106 {
5107         for (; h != NULL; h = h->next)
5108                 if (h->addr.type == PF_ADDR_TABLE) {
5109                         yyerror(fmt, h->addr.v.tblname);
5110                         return (1);
5111                 }
5112         return (0);
5113 }
5114
5115 int
5116 disallow_urpf_failed(struct node_host *h, const char *fmt)
5117 {
5118         for (; h != NULL; h = h->next)
5119                 if (h->addr.type == PF_ADDR_URPFFAILED) {
5120                         yyerror(fmt);
5121                         return (1);
5122                 }
5123         return (0);
5124 }
5125
5126 int
5127 disallow_alias(struct node_host *h, const char *fmt)
5128 {
5129         for (; h != NULL; h = h->next)
5130                 if (DYNIF_MULTIADDR(h->addr)) {
5131                         yyerror(fmt, h->addr.v.tblname);
5132                         return (1);
5133                 }
5134         return (0);
5135 }
5136
5137 int
5138 rule_consistent(struct pfctl_rule *r, int anchor_call)
5139 {
5140         int     problems = 0;
5141
5142         switch (r->action) {
5143         case PF_PASS:
5144         case PF_DROP:
5145         case PF_SCRUB:
5146         case PF_NOSCRUB:
5147                 problems = filter_consistent(r, anchor_call);
5148                 break;
5149         case PF_NAT:
5150         case PF_NONAT:
5151                 problems = nat_consistent(r);
5152                 break;
5153         case PF_RDR:
5154         case PF_NORDR:
5155                 problems = rdr_consistent(r);
5156                 break;
5157         case PF_BINAT:
5158         case PF_NOBINAT:
5159         default:
5160                 break;
5161         }
5162         return (problems);
5163 }
5164
5165 int
5166 filter_consistent(struct pfctl_rule *r, int anchor_call)
5167 {
5168         int     problems = 0;
5169
5170         if (r->proto != IPPROTO_TCP && r->proto != IPPROTO_UDP &&
5171             (r->src.port_op || r->dst.port_op)) {
5172                 yyerror("port only applies to tcp/udp");
5173                 problems++;
5174         }
5175         if (r->proto != IPPROTO_ICMP && r->proto != IPPROTO_ICMPV6 &&
5176             (r->type || r->code)) {
5177                 yyerror("icmp-type/code only applies to icmp");
5178                 problems++;
5179         }
5180         if (!r->af && (r->type || r->code)) {
5181                 yyerror("must indicate address family with icmp-type/code");
5182                 problems++;
5183         }
5184         if (r->overload_tblname[0] &&
5185             r->max_src_conn == 0 && r->max_src_conn_rate.seconds == 0) {
5186                 yyerror("'overload' requires 'max-src-conn' "
5187                     "or 'max-src-conn-rate'");
5188                 problems++;
5189         }
5190         if ((r->proto == IPPROTO_ICMP && r->af == AF_INET6) ||
5191             (r->proto == IPPROTO_ICMPV6 && r->af == AF_INET)) {
5192                 yyerror("proto %s doesn't match address family %s",
5193                     r->proto == IPPROTO_ICMP ? "icmp" : "icmp6",
5194                     r->af == AF_INET ? "inet" : "inet6");
5195                 problems++;
5196         }
5197         if (r->allow_opts && r->action != PF_PASS) {
5198                 yyerror("allow-opts can only be specified for pass rules");
5199                 problems++;
5200         }
5201         if (r->rule_flag & PFRULE_FRAGMENT && (r->src.port_op ||
5202             r->dst.port_op || r->flagset || r->type || r->code)) {
5203                 yyerror("fragments can be filtered only on IP header fields");
5204                 problems++;
5205         }
5206         if (r->rule_flag & PFRULE_RETURNRST && r->proto != IPPROTO_TCP) {
5207                 yyerror("return-rst can only be applied to TCP rules");
5208                 problems++;
5209         }
5210         if (r->max_src_nodes && !(r->rule_flag & PFRULE_RULESRCTRACK)) {
5211                 yyerror("max-src-nodes requires 'source-track rule'");
5212                 problems++;
5213         }
5214         if (r->action == PF_DROP && r->keep_state) {
5215                 yyerror("keep state on block rules doesn't make sense");
5216                 problems++;
5217         }
5218         if (r->rule_flag & PFRULE_STATESLOPPY &&
5219             (r->keep_state == PF_STATE_MODULATE ||
5220             r->keep_state == PF_STATE_SYNPROXY)) {
5221                 yyerror("sloppy state matching cannot be used with "
5222                     "synproxy state or modulate state");
5223                 problems++;
5224         }
5225         return (-problems);
5226 }
5227
5228 int
5229 nat_consistent(struct pfctl_rule *r)
5230 {
5231         return (0);     /* yeah! */
5232 }
5233
5234 int
5235 rdr_consistent(struct pfctl_rule *r)
5236 {
5237         int                      problems = 0;
5238
5239         if (r->proto != IPPROTO_TCP && r->proto != IPPROTO_UDP) {
5240                 if (r->src.port_op) {
5241                         yyerror("src port only applies to tcp/udp");
5242                         problems++;
5243                 }
5244                 if (r->dst.port_op) {
5245                         yyerror("dst port only applies to tcp/udp");
5246                         problems++;
5247                 }
5248                 if (r->rpool.proxy_port[0]) {
5249                         yyerror("rpool port only applies to tcp/udp");
5250                         problems++;
5251                 }
5252         }
5253         if (r->dst.port_op &&
5254             r->dst.port_op != PF_OP_EQ && r->dst.port_op != PF_OP_RRG) {
5255                 yyerror("invalid port operator for rdr destination port");
5256                 problems++;
5257         }
5258         return (-problems);
5259 }
5260
5261 int
5262 process_tabledef(char *name, struct table_opts *opts)
5263 {
5264         struct pfr_buffer        ab;
5265         struct node_tinit       *ti;
5266         unsigned long            maxcount;
5267         size_t                   s = sizeof(maxcount);
5268
5269         bzero(&ab, sizeof(ab));
5270         ab.pfrb_type = PFRB_ADDRS;
5271         SIMPLEQ_FOREACH(ti, &opts->init_nodes, entries) {
5272                 if (ti->file)
5273                         if (pfr_buf_load(&ab, ti->file, 0, append_addr)) {
5274                                 if (errno)
5275                                         yyerror("cannot load \"%s\": %s",
5276                                             ti->file, strerror(errno));
5277                                 else
5278                                         yyerror("file \"%s\" contains bad data",
5279                                             ti->file);
5280                                 goto _error;
5281                         }
5282                 if (ti->host)
5283                         if (append_addr_host(&ab, ti->host, 0, 0)) {
5284                                 yyerror("cannot create address buffer: %s",
5285                                     strerror(errno));
5286                                 goto _error;
5287                         }
5288         }
5289         if (pf->opts & PF_OPT_VERBOSE)
5290                 print_tabledef(name, opts->flags, opts->init_addr,
5291                     &opts->init_nodes);
5292         if (!(pf->opts & PF_OPT_NOACTION) &&
5293             pfctl_define_table(name, opts->flags, opts->init_addr,
5294             pf->anchor->name, &ab, pf->anchor->ruleset.tticket)) {
5295
5296                 if (sysctlbyname("net.pf.request_maxcount", &maxcount, &s,
5297                     NULL, 0) == -1)
5298                         maxcount = 65535;
5299
5300                 if (ab.pfrb_size > maxcount)
5301                         yyerror("cannot define table %s: too many elements.\n"
5302                             "Consider increasing net.pf.request_maxcount.",
5303                             name);
5304                 else
5305                         yyerror("cannot define table %s: %s", name,
5306                             pfr_strerror(errno));
5307
5308                 goto _error;
5309         }
5310         pf->tdirty = 1;
5311         pfr_buf_clear(&ab);
5312         return (0);
5313 _error:
5314         pfr_buf_clear(&ab);
5315         return (-1);
5316 }
5317
5318 struct keywords {
5319         const char      *k_name;
5320         int              k_val;
5321 };
5322
5323 /* macro gore, but you should've seen the prior indentation nightmare... */
5324
5325 #define FREE_LIST(T,r) \
5326         do { \
5327                 T *p, *node = r; \
5328                 while (node != NULL) { \
5329                         p = node; \
5330                         node = node->next; \
5331                         free(p); \
5332                 } \
5333         } while (0)
5334
5335 #define LOOP_THROUGH(T,n,r,C) \
5336         do { \
5337                 T *n; \
5338                 if (r == NULL) { \
5339                         r = calloc(1, sizeof(T)); \
5340                         if (r == NULL) \
5341                                 err(1, "LOOP: calloc"); \
5342                         r->next = NULL; \
5343                 } \
5344                 n = r; \
5345                 while (n != NULL) { \
5346                         do { \
5347                                 C; \
5348                         } while (0); \
5349                         n = n->next; \
5350                 } \
5351         } while (0)
5352
5353 void
5354 expand_label_str(char *label, size_t len, const char *srch, const char *repl)
5355 {
5356         char *tmp;
5357         char *p, *q;
5358
5359         if ((tmp = calloc(1, len)) == NULL)
5360                 err(1, "expand_label_str: calloc");
5361         p = q = label;
5362         while ((q = strstr(p, srch)) != NULL) {
5363                 *q = '\0';
5364                 if ((strlcat(tmp, p, len) >= len) ||
5365                     (strlcat(tmp, repl, len) >= len))
5366                         errx(1, "expand_label: label too long");
5367                 q += strlen(srch);
5368                 p = q;
5369         }
5370         if (strlcat(tmp, p, len) >= len)
5371                 errx(1, "expand_label: label too long");
5372         strlcpy(label, tmp, len);       /* always fits */
5373         free(tmp);
5374 }
5375
5376 void
5377 expand_label_if(const char *name, char *label, size_t len, const char *ifname)
5378 {
5379         if (strstr(label, name) != NULL) {
5380                 if (!*ifname)
5381                         expand_label_str(label, len, name, "any");
5382                 else
5383                         expand_label_str(label, len, name, ifname);
5384         }
5385 }
5386
5387 void
5388 expand_label_addr(const char *name, char *label, size_t len, sa_family_t af,
5389     struct pf_rule_addr *addr)
5390 {
5391         char tmp[64], tmp_not[66];
5392
5393         if (strstr(label, name) != NULL) {
5394                 switch (addr->addr.type) {
5395                 case PF_ADDR_DYNIFTL:
5396                         snprintf(tmp, sizeof(tmp), "(%s)", addr->addr.v.ifname);
5397                         break;
5398                 case PF_ADDR_TABLE:
5399                         snprintf(tmp, sizeof(tmp), "<%s>", addr->addr.v.tblname);
5400                         break;
5401                 case PF_ADDR_NOROUTE:
5402                         snprintf(tmp, sizeof(tmp), "no-route");
5403                         break;
5404                 case PF_ADDR_URPFFAILED:
5405                         snprintf(tmp, sizeof(tmp), "urpf-failed");
5406                         break;
5407                 case PF_ADDR_ADDRMASK:
5408                         if (!af || (PF_AZERO(&addr->addr.v.a.addr, af) &&
5409                             PF_AZERO(&addr->addr.v.a.mask, af)))
5410                                 snprintf(tmp, sizeof(tmp), "any");
5411                         else {
5412                                 char    a[48];
5413                                 int     bits;
5414
5415                                 if (inet_ntop(af, &addr->addr.v.a.addr, a,
5416                                     sizeof(a)) == NULL)
5417                                         snprintf(tmp, sizeof(tmp), "?");
5418                                 else {
5419                                         bits = unmask(&addr->addr.v.a.mask, af);
5420                                         if ((af == AF_INET && bits < 32) ||
5421                                             (af == AF_INET6 && bits < 128))
5422                                                 snprintf(tmp, sizeof(tmp),
5423                                                     "%s/%d", a, bits);
5424                                         else
5425                                                 snprintf(tmp, sizeof(tmp),
5426                                                     "%s", a);
5427                                 }
5428                         }
5429                         break;
5430                 default:
5431                         snprintf(tmp, sizeof(tmp), "?");
5432                         break;
5433                 }
5434
5435                 if (addr->neg) {
5436                         snprintf(tmp_not, sizeof(tmp_not), "! %s", tmp);
5437                         expand_label_str(label, len, name, tmp_not);
5438                 } else
5439                         expand_label_str(label, len, name, tmp);
5440         }
5441 }
5442
5443 void
5444 expand_label_port(const char *name, char *label, size_t len,
5445     struct pf_rule_addr *addr)
5446 {
5447         char     a1[6], a2[6], op[13] = "";
5448
5449         if (strstr(label, name) != NULL) {
5450                 snprintf(a1, sizeof(a1), "%u", ntohs(addr->port[0]));
5451                 snprintf(a2, sizeof(a2), "%u", ntohs(addr->port[1]));
5452                 if (!addr->port_op)
5453                         ;
5454                 else if (addr->port_op == PF_OP_IRG)
5455                         snprintf(op, sizeof(op), "%s><%s", a1, a2);
5456                 else if (addr->port_op == PF_OP_XRG)
5457                         snprintf(op, sizeof(op), "%s<>%s", a1, a2);
5458                 else if (addr->port_op == PF_OP_EQ)
5459                         snprintf(op, sizeof(op), "%s", a1);
5460                 else if (addr->port_op == PF_OP_NE)
5461                         snprintf(op, sizeof(op), "!=%s", a1);
5462                 else if (addr->port_op == PF_OP_LT)
5463                         snprintf(op, sizeof(op), "<%s", a1);
5464                 else if (addr->port_op == PF_OP_LE)
5465                         snprintf(op, sizeof(op), "<=%s", a1);
5466                 else if (addr->port_op == PF_OP_GT)
5467                         snprintf(op, sizeof(op), ">%s", a1);
5468                 else if (addr->port_op == PF_OP_GE)
5469                         snprintf(op, sizeof(op), ">=%s", a1);
5470                 expand_label_str(label, len, name, op);
5471         }
5472 }
5473
5474 void
5475 expand_label_proto(const char *name, char *label, size_t len, u_int8_t proto)
5476 {
5477         const char *protoname;
5478         char n[4];
5479
5480         if (strstr(label, name) != NULL) {
5481                 protoname = pfctl_proto2name(proto);
5482                 if (protoname != NULL)
5483                         expand_label_str(label, len, name, protoname);
5484                 else {
5485                         snprintf(n, sizeof(n), "%u", proto);
5486                         expand_label_str(label, len, name, n);
5487                 }
5488         }
5489 }
5490
5491 void
5492 expand_label_nr(const char *name, char *label, size_t len,
5493     struct pfctl_rule *r)
5494 {
5495         char n[11];
5496
5497         if (strstr(label, name) != NULL) {
5498                 snprintf(n, sizeof(n), "%u", r->nr);
5499                 expand_label_str(label, len, name, n);
5500         }
5501 }
5502
5503 void
5504 expand_label(char *label, size_t len, struct pfctl_rule *r)
5505 {
5506         expand_label_if("$if", label, len, r->ifname);
5507         expand_label_addr("$srcaddr", label, len, r->af, &r->src);
5508         expand_label_addr("$dstaddr", label, len, r->af, &r->dst);
5509         expand_label_port("$srcport", label, len, &r->src);
5510         expand_label_port("$dstport", label, len, &r->dst);
5511         expand_label_proto("$proto", label, len, r->proto);
5512         expand_label_nr("$nr", label, len, r);
5513 }
5514
5515 int
5516 expand_altq(struct pf_altq *a, struct node_if *interfaces,
5517     struct node_queue *nqueues, struct node_queue_bw bwspec,
5518     struct node_queue_opt *opts)
5519 {
5520         struct pf_altq           pa, pb;
5521         char                     qname[PF_QNAME_SIZE];
5522         struct node_queue       *n;
5523         struct node_queue_bw     bw;
5524         int                      errs = 0;
5525
5526         if ((pf->loadopt & PFCTL_FLAG_ALTQ) == 0) {
5527                 FREE_LIST(struct node_if, interfaces);
5528                 if (nqueues)
5529                         FREE_LIST(struct node_queue, nqueues);
5530                 return (0);
5531         }
5532
5533         LOOP_THROUGH(struct node_if, interface, interfaces,
5534                 memcpy(&pa, a, sizeof(struct pf_altq));
5535                 if (strlcpy(pa.ifname, interface->ifname,
5536                     sizeof(pa.ifname)) >= sizeof(pa.ifname))
5537                         errx(1, "expand_altq: strlcpy");
5538
5539                 if (interface->not) {
5540                         yyerror("altq on ! <interface> is not supported");
5541                         errs++;
5542                 } else {
5543                         if (eval_pfaltq(pf, &pa, &bwspec, opts))
5544                                 errs++;
5545                         else
5546                                 if (pfctl_add_altq(pf, &pa))
5547                                         errs++;
5548
5549                         if (pf->opts & PF_OPT_VERBOSE) {
5550                                 print_altq(&pf->paltq->altq, 0,
5551                                     &bwspec, opts);
5552                                 if (nqueues && nqueues->tail) {
5553                                         printf("queue { ");
5554                                         LOOP_THROUGH(struct node_queue, queue,
5555                                             nqueues,
5556                                                 printf("%s ",
5557                                                     queue->queue);
5558                                         );
5559                                         printf("}");
5560                                 }
5561                                 printf("\n");
5562                         }
5563
5564                         if (pa.scheduler == ALTQT_CBQ ||
5565                             pa.scheduler == ALTQT_HFSC ||
5566                             pa.scheduler == ALTQT_FAIRQ) {
5567                                 /* now create a root queue */
5568                                 memset(&pb, 0, sizeof(struct pf_altq));
5569                                 if (strlcpy(qname, "root_", sizeof(qname)) >=
5570                                     sizeof(qname))
5571                                         errx(1, "expand_altq: strlcpy");
5572                                 if (strlcat(qname, interface->ifname,
5573                                     sizeof(qname)) >= sizeof(qname))
5574                                         errx(1, "expand_altq: strlcat");
5575                                 if (strlcpy(pb.qname, qname,
5576                                     sizeof(pb.qname)) >= sizeof(pb.qname))
5577                                         errx(1, "expand_altq: strlcpy");
5578                                 if (strlcpy(pb.ifname, interface->ifname,
5579                                     sizeof(pb.ifname)) >= sizeof(pb.ifname))
5580                                         errx(1, "expand_altq: strlcpy");
5581                                 pb.qlimit = pa.qlimit;
5582                                 pb.scheduler = pa.scheduler;
5583                                 bw.bw_absolute = pa.ifbandwidth;
5584                                 bw.bw_percent = 0;
5585                                 if (eval_pfqueue(pf, &pb, &bw, opts))
5586                                         errs++;
5587                                 else
5588                                         if (pfctl_add_altq(pf, &pb))
5589                                                 errs++;
5590                         }
5591
5592                         LOOP_THROUGH(struct node_queue, queue, nqueues,
5593                                 n = calloc(1, sizeof(struct node_queue));
5594                                 if (n == NULL)
5595                                         err(1, "expand_altq: calloc");
5596                                 if (pa.scheduler == ALTQT_CBQ ||
5597                                     pa.scheduler == ALTQT_HFSC ||
5598                                     pa.scheduler == ALTQT_FAIRQ)
5599                                         if (strlcpy(n->parent, qname,
5600                                             sizeof(n->parent)) >=
5601                                             sizeof(n->parent))
5602                                                 errx(1, "expand_altq: strlcpy");
5603                                 if (strlcpy(n->queue, queue->queue,
5604                                     sizeof(n->queue)) >= sizeof(n->queue))
5605                                         errx(1, "expand_altq: strlcpy");
5606                                 if (strlcpy(n->ifname, interface->ifname,
5607                                     sizeof(n->ifname)) >= sizeof(n->ifname))
5608                                         errx(1, "expand_altq: strlcpy");
5609                                 n->scheduler = pa.scheduler;
5610                                 n->next = NULL;
5611                                 n->tail = n;
5612                                 if (queues == NULL)
5613                                         queues = n;
5614                                 else {
5615                                         queues->tail->next = n;
5616                                         queues->tail = n;
5617                                 }
5618                         );
5619                 }
5620         );
5621         FREE_LIST(struct node_if, interfaces);
5622         if (nqueues)
5623                 FREE_LIST(struct node_queue, nqueues);
5624
5625         return (errs);
5626 }
5627
5628 int
5629 expand_queue(struct pf_altq *a, struct node_if *interfaces,
5630     struct node_queue *nqueues, struct node_queue_bw bwspec,
5631     struct node_queue_opt *opts)
5632 {
5633         struct node_queue       *n, *nq;
5634         struct pf_altq           pa;
5635         u_int8_t                 found = 0;
5636         u_int8_t                 errs = 0;
5637
5638         if ((pf->loadopt & PFCTL_FLAG_ALTQ) == 0) {
5639                 FREE_LIST(struct node_queue, nqueues);
5640                 return (0);
5641         }
5642
5643         if (queues == NULL) {
5644                 yyerror("queue %s has no parent", a->qname);
5645                 FREE_LIST(struct node_queue, nqueues);
5646                 return (1);
5647         }
5648
5649         LOOP_THROUGH(struct node_if, interface, interfaces,
5650                 LOOP_THROUGH(struct node_queue, tqueue, queues,
5651                         if (!strncmp(a->qname, tqueue->queue, PF_QNAME_SIZE) &&
5652                             (interface->ifname[0] == 0 ||
5653                             (!interface->not && !strncmp(interface->ifname,
5654                             tqueue->ifname, IFNAMSIZ)) ||
5655                             (interface->not && strncmp(interface->ifname,
5656                             tqueue->ifname, IFNAMSIZ)))) {
5657                                 /* found ourself in queues */
5658                                 found++;
5659
5660                                 memcpy(&pa, a, sizeof(struct pf_altq));
5661
5662                                 if (pa.scheduler != ALTQT_NONE &&
5663                                     pa.scheduler != tqueue->scheduler) {
5664                                         yyerror("exactly one scheduler type "
5665                                             "per interface allowed");
5666                                         return (1);
5667                                 }
5668                                 pa.scheduler = tqueue->scheduler;
5669
5670                                 /* scheduler dependent error checking */
5671                                 switch (pa.scheduler) {
5672                                 case ALTQT_PRIQ:
5673                                         if (nqueues != NULL) {
5674                                                 yyerror("priq queues cannot "
5675                                                     "have child queues");
5676                                                 return (1);
5677                                         }
5678                                         if (bwspec.bw_absolute > 0 ||
5679                                             bwspec.bw_percent < 100) {
5680                                                 yyerror("priq doesn't take "
5681                                                     "bandwidth");
5682                                                 return (1);
5683                                         }
5684                                         break;
5685                                 default:
5686                                         break;
5687                                 }
5688
5689                                 if (strlcpy(pa.ifname, tqueue->ifname,
5690                                     sizeof(pa.ifname)) >= sizeof(pa.ifname))
5691                                         errx(1, "expand_queue: strlcpy");
5692                                 if (strlcpy(pa.parent, tqueue->parent,
5693                                     sizeof(pa.parent)) >= sizeof(pa.parent))
5694                                         errx(1, "expand_queue: strlcpy");
5695
5696                                 if (eval_pfqueue(pf, &pa, &bwspec, opts))
5697                                         errs++;
5698                                 else
5699                                         if (pfctl_add_altq(pf, &pa))
5700                                                 errs++;
5701
5702                                 for (nq = nqueues; nq != NULL; nq = nq->next) {
5703                                         if (!strcmp(a->qname, nq->queue)) {
5704                                                 yyerror("queue cannot have "
5705                                                     "itself as child");
5706                                                 errs++;
5707                                                 continue;
5708                                         }
5709                                         n = calloc(1,
5710                                             sizeof(struct node_queue));
5711                                         if (n == NULL)
5712                                                 err(1, "expand_queue: calloc");
5713                                         if (strlcpy(n->parent, a->qname,
5714                                             sizeof(n->parent)) >=
5715                                             sizeof(n->parent))
5716                                                 errx(1, "expand_queue strlcpy");
5717                                         if (strlcpy(n->queue, nq->queue,
5718                                             sizeof(n->queue)) >=
5719                                             sizeof(n->queue))
5720                                                 errx(1, "expand_queue strlcpy");
5721                                         if (strlcpy(n->ifname, tqueue->ifname,
5722                                             sizeof(n->ifname)) >=
5723                                             sizeof(n->ifname))
5724                                                 errx(1, "expand_queue strlcpy");
5725                                         n->scheduler = tqueue->scheduler;
5726                                         n->next = NULL;
5727                                         n->tail = n;
5728                                         if (queues == NULL)
5729                                                 queues = n;
5730                                         else {
5731                                                 queues->tail->next = n;
5732                                                 queues->tail = n;
5733                                         }
5734                                 }
5735                                 if ((pf->opts & PF_OPT_VERBOSE) && (
5736                                     (found == 1 && interface->ifname[0] == 0) ||
5737                                     (found > 0 && interface->ifname[0] != 0))) {
5738                                         print_queue(&pf->paltq->altq, 0,
5739                                             &bwspec, interface->ifname[0] != 0,
5740                                             opts);
5741                                         if (nqueues && nqueues->tail) {
5742                                                 printf("{ ");
5743                                                 LOOP_THROUGH(struct node_queue,
5744                                                     queue, nqueues,
5745                                                         printf("%s ",
5746                                                             queue->queue);
5747                                                 );
5748                                                 printf("}");
5749                                         }
5750                                         printf("\n");
5751                                 }
5752                         }
5753                 );
5754         );
5755
5756         FREE_LIST(struct node_queue, nqueues);
5757         FREE_LIST(struct node_if, interfaces);
5758
5759         if (!found) {
5760                 yyerror("queue %s has no parent", a->qname);
5761                 errs++;
5762         }
5763
5764         if (errs)
5765                 return (1);
5766         else
5767                 return (0);
5768 }
5769
5770 static int
5771 pf_af_to_proto(sa_family_t af)
5772 {
5773         if (af == AF_INET)
5774                 return (ETHERTYPE_IP);
5775         if (af == AF_INET6)
5776                 return (ETHERTYPE_IPV6);
5777
5778         return (0);
5779 }
5780
5781 void
5782 expand_eth_rule(struct pfctl_eth_rule *r,
5783     struct node_if *interfaces, struct node_etherproto *protos,
5784     struct node_mac *srcs, struct node_mac *dsts,
5785     struct node_host *ipsrcs, struct node_host *ipdsts, const char *anchor_call)
5786 {
5787         char tagname[PF_TAG_NAME_SIZE];
5788         char match_tagname[PF_TAG_NAME_SIZE];
5789         char qname[PF_QNAME_SIZE];
5790
5791         if (strlcpy(tagname, r->tagname, sizeof(tagname)) >= sizeof(tagname))
5792                 errx(1, "expand_eth_rule: tagname");
5793         if (strlcpy(match_tagname, r->match_tagname, sizeof(match_tagname)) >=
5794             sizeof(match_tagname))
5795                 errx(1, "expand_eth_rule: match_tagname");
5796         if (strlcpy(qname, r->qname, sizeof(qname)) >= sizeof(qname))
5797                 errx(1, "expand_eth_rule: qname");
5798
5799         LOOP_THROUGH(struct node_if, interface, interfaces,
5800         LOOP_THROUGH(struct node_etherproto, proto, protos,
5801         LOOP_THROUGH(struct node_mac, src, srcs,
5802         LOOP_THROUGH(struct node_mac, dst, dsts,
5803         LOOP_THROUGH(struct node_host, ipsrc, ipsrcs,
5804         LOOP_THROUGH(struct node_host, ipdst, ipdsts,
5805                 strlcpy(r->ifname, interface->ifname,
5806                     sizeof(r->ifname));
5807                 r->ifnot = interface->not;
5808                 r->proto = proto->proto;
5809                 if (!r->proto && ipsrc->af)
5810                         r->proto = pf_af_to_proto(ipsrc->af);
5811                 else if (!r->proto && ipdst->af)
5812                         r->proto = pf_af_to_proto(ipdst->af);
5813                 bcopy(src->mac, r->src.addr, ETHER_ADDR_LEN);
5814                 bcopy(src->mask, r->src.mask, ETHER_ADDR_LEN);
5815                 r->src.neg = src->neg;
5816                 r->src.isset = src->isset;
5817                 r->ipsrc.addr = ipsrc->addr;
5818                 r->ipsrc.neg = ipsrc->not;
5819                 r->ipdst.addr = ipdst->addr;
5820                 r->ipdst.neg = ipdst->not;
5821                 bcopy(dst->mac, r->dst.addr, ETHER_ADDR_LEN);
5822                 bcopy(dst->mask, r->dst.mask, ETHER_ADDR_LEN);
5823                 r->dst.neg = dst->neg;
5824                 r->dst.isset = dst->isset;
5825                 r->nr = pf->eastack[pf->asd]->match++;
5826
5827                 if (strlcpy(r->tagname, tagname, sizeof(r->tagname)) >=
5828                     sizeof(r->tagname))
5829                         errx(1, "expand_eth_rule: r->tagname");
5830                 if (strlcpy(r->match_tagname, match_tagname,
5831                     sizeof(r->match_tagname)) >= sizeof(r->match_tagname))
5832                         errx(1, "expand_eth_rule: r->match_tagname");
5833                 if (strlcpy(r->qname, qname, sizeof(r->qname)) >= sizeof(r->qname))
5834                         errx(1, "expand_eth_rule: r->qname");
5835
5836                 pfctl_append_eth_rule(pf, r, anchor_call);
5837         ))))));
5838
5839         FREE_LIST(struct node_if, interfaces);
5840         FREE_LIST(struct node_etherproto, protos);
5841         FREE_LIST(struct node_mac, srcs);
5842         FREE_LIST(struct node_mac, dsts);
5843         FREE_LIST(struct node_host, ipsrcs);
5844         FREE_LIST(struct node_host, ipdsts);
5845 }
5846
5847 void
5848 expand_rule(struct pfctl_rule *r,
5849     struct node_if *interfaces, struct node_host *rpool_hosts,
5850     struct node_proto *protos, struct node_os *src_oses,
5851     struct node_host *src_hosts, struct node_port *src_ports,
5852     struct node_host *dst_hosts, struct node_port *dst_ports,
5853     struct node_uid *uids, struct node_gid *gids, struct node_icmp *icmp_types,
5854     const char *anchor_call)
5855 {
5856         sa_family_t              af = r->af;
5857         int                      added = 0, error = 0;
5858         char                     ifname[IF_NAMESIZE];
5859         char                     label[PF_RULE_MAX_LABEL_COUNT][PF_RULE_LABEL_SIZE];
5860         char                     tagname[PF_TAG_NAME_SIZE];
5861         char                     match_tagname[PF_TAG_NAME_SIZE];
5862         struct pf_pooladdr      *pa;
5863         struct node_host        *h;
5864         u_int8_t                 flags, flagset, keep_state;
5865
5866         memcpy(label, r->label, sizeof(r->label));
5867         assert(sizeof(r->label) == sizeof(label));
5868         if (strlcpy(tagname, r->tagname, sizeof(tagname)) >= sizeof(tagname))
5869                 errx(1, "expand_rule: strlcpy");
5870         if (strlcpy(match_tagname, r->match_tagname, sizeof(match_tagname)) >=
5871             sizeof(match_tagname))
5872                 errx(1, "expand_rule: strlcpy");
5873         flags = r->flags;
5874         flagset = r->flagset;
5875         keep_state = r->keep_state;
5876
5877         LOOP_THROUGH(struct node_if, interface, interfaces,
5878         LOOP_THROUGH(struct node_proto, proto, protos,
5879         LOOP_THROUGH(struct node_icmp, icmp_type, icmp_types,
5880         LOOP_THROUGH(struct node_host, src_host, src_hosts,
5881         LOOP_THROUGH(struct node_port, src_port, src_ports,
5882         LOOP_THROUGH(struct node_os, src_os, src_oses,
5883         LOOP_THROUGH(struct node_host, dst_host, dst_hosts,
5884         LOOP_THROUGH(struct node_port, dst_port, dst_ports,
5885         LOOP_THROUGH(struct node_uid, uid, uids,
5886         LOOP_THROUGH(struct node_gid, gid, gids,
5887
5888                 r->af = af;
5889                 /* for link-local IPv6 address, interface must match up */
5890                 if ((r->af && src_host->af && r->af != src_host->af) ||
5891                     (r->af && dst_host->af && r->af != dst_host->af) ||
5892                     (src_host->af && dst_host->af &&
5893                     src_host->af != dst_host->af) ||
5894                     (src_host->ifindex && dst_host->ifindex &&
5895                     src_host->ifindex != dst_host->ifindex) ||
5896                     (src_host->ifindex && *interface->ifname &&
5897                     src_host->ifindex != if_nametoindex(interface->ifname)) ||
5898                     (dst_host->ifindex && *interface->ifname &&
5899                     dst_host->ifindex != if_nametoindex(interface->ifname)))
5900                         continue;
5901                 if (!r->af && src_host->af)
5902                         r->af = src_host->af;
5903                 else if (!r->af && dst_host->af)
5904                         r->af = dst_host->af;
5905
5906                 if (*interface->ifname)
5907                         strlcpy(r->ifname, interface->ifname,
5908                             sizeof(r->ifname));
5909                 else if (if_indextoname(src_host->ifindex, ifname))
5910                         strlcpy(r->ifname, ifname, sizeof(r->ifname));
5911                 else if (if_indextoname(dst_host->ifindex, ifname))
5912                         strlcpy(r->ifname, ifname, sizeof(r->ifname));
5913                 else
5914                         memset(r->ifname, '\0', sizeof(r->ifname));
5915
5916                 memcpy(r->label, label, sizeof(r->label));
5917                 if (strlcpy(r->tagname, tagname, sizeof(r->tagname)) >=
5918                     sizeof(r->tagname))
5919                         errx(1, "expand_rule: strlcpy");
5920                 if (strlcpy(r->match_tagname, match_tagname,
5921                     sizeof(r->match_tagname)) >= sizeof(r->match_tagname))
5922                         errx(1, "expand_rule: strlcpy");
5923
5924                 error += check_netmask(src_host, r->af);
5925                 error += check_netmask(dst_host, r->af);
5926
5927                 r->ifnot = interface->not;
5928                 r->proto = proto->proto;
5929                 r->src.addr = src_host->addr;
5930                 r->src.neg = src_host->not;
5931                 r->src.port[0] = src_port->port[0];
5932                 r->src.port[1] = src_port->port[1];
5933                 r->src.port_op = src_port->op;
5934                 r->dst.addr = dst_host->addr;
5935                 r->dst.neg = dst_host->not;
5936                 r->dst.port[0] = dst_port->port[0];
5937                 r->dst.port[1] = dst_port->port[1];
5938                 r->dst.port_op = dst_port->op;
5939                 r->uid.op = uid->op;
5940                 r->uid.uid[0] = uid->uid[0];
5941                 r->uid.uid[1] = uid->uid[1];
5942                 r->gid.op = gid->op;
5943                 r->gid.gid[0] = gid->gid[0];
5944                 r->gid.gid[1] = gid->gid[1];
5945                 r->type = icmp_type->type;
5946                 r->code = icmp_type->code;
5947
5948                 if ((keep_state == PF_STATE_MODULATE ||
5949                     keep_state == PF_STATE_SYNPROXY) &&
5950                     r->proto && r->proto != IPPROTO_TCP)
5951                         r->keep_state = PF_STATE_NORMAL;
5952                 else
5953                         r->keep_state = keep_state;
5954
5955                 if (r->proto && r->proto != IPPROTO_TCP) {
5956                         r->flags = 0;
5957                         r->flagset = 0;
5958                 } else {
5959                         r->flags = flags;
5960                         r->flagset = flagset;
5961                 }
5962                 if (icmp_type->proto && r->proto != icmp_type->proto) {
5963                         yyerror("icmp-type mismatch");
5964                         error++;
5965                 }
5966
5967                 if (src_os && src_os->os) {
5968                         r->os_fingerprint = pfctl_get_fingerprint(src_os->os);
5969                         if ((pf->opts & PF_OPT_VERBOSE2) &&
5970                             r->os_fingerprint == PF_OSFP_NOMATCH)
5971                                 fprintf(stderr,
5972                                     "warning: unknown '%s' OS fingerprint\n",
5973                                     src_os->os);
5974                 } else {
5975                         r->os_fingerprint = PF_OSFP_ANY;
5976                 }
5977
5978                 TAILQ_INIT(&r->rpool.list);
5979                 for (h = rpool_hosts; h != NULL; h = h->next) {
5980                         pa = calloc(1, sizeof(struct pf_pooladdr));
5981                         if (pa == NULL)
5982                                 err(1, "expand_rule: calloc");
5983                         pa->addr = h->addr;
5984                         if (h->ifname != NULL) {
5985                                 if (strlcpy(pa->ifname, h->ifname,
5986                                     sizeof(pa->ifname)) >=
5987                                     sizeof(pa->ifname))
5988                                         errx(1, "expand_rule: strlcpy");
5989                         } else
5990                                 pa->ifname[0] = 0;
5991                         TAILQ_INSERT_TAIL(&r->rpool.list, pa, entries);
5992                 }
5993
5994                 if (rule_consistent(r, anchor_call[0]) < 0 || error)
5995                         yyerror("skipping rule due to errors");
5996                 else {
5997                         r->nr = pf->astack[pf->asd]->match++;
5998                         pfctl_append_rule(pf, r, anchor_call);
5999                         added++;
6000                 }
6001
6002         ))))))))));
6003
6004         FREE_LIST(struct node_if, interfaces);
6005         FREE_LIST(struct node_proto, protos);
6006         FREE_LIST(struct node_host, src_hosts);
6007         FREE_LIST(struct node_port, src_ports);
6008         FREE_LIST(struct node_os, src_oses);
6009         FREE_LIST(struct node_host, dst_hosts);
6010         FREE_LIST(struct node_port, dst_ports);
6011         FREE_LIST(struct node_uid, uids);
6012         FREE_LIST(struct node_gid, gids);
6013         FREE_LIST(struct node_icmp, icmp_types);
6014         FREE_LIST(struct node_host, rpool_hosts);
6015
6016         if (!added)
6017                 yyerror("rule expands to no valid combination");
6018 }
6019
6020 int
6021 expand_skip_interface(struct node_if *interfaces)
6022 {
6023         int     errs = 0;
6024
6025         if (!interfaces || (!interfaces->next && !interfaces->not &&
6026             !strcmp(interfaces->ifname, "none"))) {
6027                 if (pf->opts & PF_OPT_VERBOSE)
6028                         printf("set skip on none\n");
6029                 errs = pfctl_set_interface_flags(pf, "", PFI_IFLAG_SKIP, 0);
6030                 return (errs);
6031         }
6032
6033         if (pf->opts & PF_OPT_VERBOSE)
6034                 printf("set skip on {");
6035         LOOP_THROUGH(struct node_if, interface, interfaces,
6036                 if (pf->opts & PF_OPT_VERBOSE)
6037                         printf(" %s", interface->ifname);
6038                 if (interface->not) {
6039                         yyerror("skip on ! <interface> is not supported");
6040                         errs++;
6041                 } else
6042                         errs += pfctl_set_interface_flags(pf,
6043                             interface->ifname, PFI_IFLAG_SKIP, 1);
6044         );
6045         if (pf->opts & PF_OPT_VERBOSE)
6046                 printf(" }\n");
6047
6048         FREE_LIST(struct node_if, interfaces);
6049
6050         if (errs)
6051                 return (1);
6052         else
6053                 return (0);
6054 }
6055
6056 #undef FREE_LIST
6057 #undef LOOP_THROUGH
6058
6059 int
6060 check_rulestate(int desired_state)
6061 {
6062         if (require_order && (rulestate > desired_state)) {
6063                 yyerror("Rules must be in order: options, ethernet, "
6064                     "normalization, queueing, translation, filtering");
6065                 return (1);
6066         }
6067         rulestate = desired_state;
6068         return (0);
6069 }
6070
6071 int
6072 kw_cmp(const void *k, const void *e)
6073 {
6074         return (strcmp(k, ((const struct keywords *)e)->k_name));
6075 }
6076
6077 int
6078 lookup(char *s)
6079 {
6080         /* this has to be sorted always */
6081         static const struct keywords keywords[] = {
6082                 { "all",                ALL},
6083                 { "allow-opts",         ALLOWOPTS},
6084                 { "altq",               ALTQ},
6085                 { "anchor",             ANCHOR},
6086                 { "antispoof",          ANTISPOOF},
6087                 { "any",                ANY},
6088                 { "bandwidth",          BANDWIDTH},
6089                 { "binat",              BINAT},
6090                 { "binat-anchor",       BINATANCHOR},
6091                 { "bitmask",            BITMASK},
6092                 { "block",              BLOCK},
6093                 { "block-policy",       BLOCKPOLICY},
6094                 { "buckets",            BUCKETS},
6095                 { "cbq",                CBQ},
6096                 { "code",               CODE},
6097                 { "codelq",             CODEL},
6098                 { "crop",               FRAGCROP},
6099                 { "debug",              DEBUG},
6100                 { "divert-reply",       DIVERTREPLY},
6101                 { "divert-to",          DIVERTTO},
6102                 { "dnpipe",             DNPIPE},
6103                 { "dnqueue",            DNQUEUE},
6104                 { "drop",               DROP},
6105                 { "drop-ovl",           FRAGDROP},
6106                 { "dup-to",             DUPTO},
6107                 { "ether",              ETHER},
6108                 { "fail-policy",        FAILPOLICY},
6109                 { "fairq",              FAIRQ},
6110                 { "fastroute",          FASTROUTE},
6111                 { "file",               FILENAME},
6112                 { "fingerprints",       FINGERPRINTS},
6113                 { "flags",              FLAGS},
6114                 { "floating",           FLOATING},
6115                 { "flush",              FLUSH},
6116                 { "for",                FOR},
6117                 { "fragment",           FRAGMENT},
6118                 { "from",               FROM},
6119                 { "global",             GLOBAL},
6120                 { "group",              GROUP},
6121                 { "hfsc",               HFSC},
6122                 { "hogs",               HOGS},
6123                 { "hostid",             HOSTID},
6124                 { "icmp-type",          ICMPTYPE},
6125                 { "icmp6-type",         ICMP6TYPE},
6126                 { "if-bound",           IFBOUND},
6127                 { "in",                 IN},
6128                 { "include",            INCLUDE},
6129                 { "inet",               INET},
6130                 { "inet6",              INET6},
6131                 { "interval",           INTERVAL},
6132                 { "keep",               KEEP},
6133                 { "keepcounters",       KEEPCOUNTERS},
6134                 { "l3",                 L3},
6135                 { "label",              LABEL},
6136                 { "limit",              LIMIT},
6137                 { "linkshare",          LINKSHARE},
6138                 { "load",               LOAD},
6139                 { "log",                LOG},
6140                 { "loginterface",       LOGINTERFACE},
6141                 { "map-e-portset",      MAPEPORTSET},
6142                 { "match",              MATCH},
6143                 { "max",                MAXIMUM},
6144                 { "max-mss",            MAXMSS},
6145                 { "max-src-conn",       MAXSRCCONN},
6146                 { "max-src-conn-rate",  MAXSRCCONNRATE},
6147                 { "max-src-nodes",      MAXSRCNODES},
6148                 { "max-src-states",     MAXSRCSTATES},
6149                 { "min-ttl",            MINTTL},
6150                 { "modulate",           MODULATE},
6151                 { "nat",                NAT},
6152                 { "nat-anchor",         NATANCHOR},
6153                 { "no",                 NO},
6154                 { "no-df",              NODF},
6155                 { "no-route",           NOROUTE},
6156                 { "no-sync",            NOSYNC},
6157                 { "on",                 ON},
6158                 { "optimization",       OPTIMIZATION},
6159                 { "os",                 OS},
6160                 { "out",                OUT},
6161                 { "overload",           OVERLOAD},
6162                 { "pass",               PASS},
6163                 { "port",               PORT},
6164                 { "prio",               PRIO},
6165                 { "priority",           PRIORITY},
6166                 { "priq",               PRIQ},
6167                 { "probability",        PROBABILITY},
6168                 { "proto",              PROTO},
6169                 { "qlimit",             QLIMIT},
6170                 { "queue",              QUEUE},
6171                 { "quick",              QUICK},
6172                 { "random",             RANDOM},
6173                 { "random-id",          RANDOMID},
6174                 { "rdr",                RDR},
6175                 { "rdr-anchor",         RDRANCHOR},
6176                 { "realtime",           REALTIME},
6177                 { "reassemble",         REASSEMBLE},
6178                 { "reply-to",           REPLYTO},
6179                 { "require-order",      REQUIREORDER},
6180                 { "return",             RETURN},
6181                 { "return-icmp",        RETURNICMP},
6182                 { "return-icmp6",       RETURNICMP6},
6183                 { "return-rst",         RETURNRST},
6184                 { "ridentifier",        RIDENTIFIER},
6185                 { "round-robin",        ROUNDROBIN},
6186                 { "route",              ROUTE},
6187                 { "route-to",           ROUTETO},
6188                 { "rtable",             RTABLE},
6189                 { "rule",               RULE},
6190                 { "ruleset-optimization",       RULESET_OPTIMIZATION},
6191                 { "scrub",              SCRUB},
6192                 { "set",                SET},
6193                 { "set-tos",            SETTOS},
6194                 { "skip",               SKIP},
6195                 { "sloppy",             SLOPPY},
6196                 { "source-hash",        SOURCEHASH},
6197                 { "source-track",       SOURCETRACK},
6198                 { "state",              STATE},
6199                 { "state-defaults",     STATEDEFAULTS},
6200                 { "state-policy",       STATEPOLICY},
6201                 { "static-port",        STATICPORT},
6202                 { "sticky-address",     STICKYADDRESS},
6203                 { "syncookies",         SYNCOOKIES},
6204                 { "synproxy",           SYNPROXY},
6205                 { "table",              TABLE},
6206                 { "tag",                TAG},
6207                 { "tagged",             TAGGED},
6208                 { "target",             TARGET},
6209                 { "tbrsize",            TBRSIZE},
6210                 { "timeout",            TIMEOUT},
6211                 { "to",                 TO},
6212                 { "tos",                TOS},
6213                 { "ttl",                TTL},
6214                 { "upperlimit",         UPPERLIMIT},
6215                 { "urpf-failed",        URPFFAILED},
6216                 { "user",               USER},
6217         };
6218         const struct keywords   *p;
6219
6220         p = bsearch(s, keywords, sizeof(keywords)/sizeof(keywords[0]),
6221             sizeof(keywords[0]), kw_cmp);
6222
6223         if (p) {
6224                 if (debug > 1)
6225                         fprintf(stderr, "%s: %d\n", s, p->k_val);
6226                 return (p->k_val);
6227         } else {
6228                 if (debug > 1)
6229                         fprintf(stderr, "string: %s\n", s);
6230                 return (STRING);
6231         }
6232 }
6233
6234 #define MAXPUSHBACK     128
6235
6236 static char     *parsebuf;
6237 static int       parseindex;
6238 static char      pushback_buffer[MAXPUSHBACK];
6239 static int       pushback_index = 0;
6240
6241 int
6242 lgetc(int quotec)
6243 {
6244         int             c, next;
6245
6246         if (parsebuf) {
6247                 /* Read character from the parsebuffer instead of input. */
6248                 if (parseindex >= 0) {
6249                         c = parsebuf[parseindex++];
6250                         if (c != '\0')
6251                                 return (c);
6252                         parsebuf = NULL;
6253                 } else
6254                         parseindex++;
6255         }
6256
6257         if (pushback_index)
6258                 return (pushback_buffer[--pushback_index]);
6259
6260         if (quotec) {
6261                 if ((c = getc(file->stream)) == EOF) {
6262                         yyerror("reached end of file while parsing quoted string");
6263                         if (popfile() == EOF)
6264                                 return (EOF);
6265                         return (quotec);
6266                 }
6267                 return (c);
6268         }
6269
6270         while ((c = getc(file->stream)) == '\\') {
6271                 next = getc(file->stream);
6272                 if (next != '\n') {
6273                         c = next;
6274                         break;
6275                 }
6276                 yylval.lineno = file->lineno;
6277                 file->lineno++;
6278         }
6279
6280         while (c == EOF) {
6281                 if (popfile() == EOF)
6282                         return (EOF);
6283                 c = getc(file->stream);
6284         }
6285         return (c);
6286 }
6287
6288 int
6289 lungetc(int c)
6290 {
6291         if (c == EOF)
6292                 return (EOF);
6293         if (parsebuf) {
6294                 parseindex--;
6295                 if (parseindex >= 0)
6296                         return (c);
6297         }
6298         if (pushback_index < MAXPUSHBACK-1)
6299                 return (pushback_buffer[pushback_index++] = c);
6300         else
6301                 return (EOF);
6302 }
6303
6304 int
6305 findeol(void)
6306 {
6307         int     c;
6308
6309         parsebuf = NULL;
6310
6311         /* skip to either EOF or the first real EOL */
6312         while (1) {
6313                 if (pushback_index)
6314                         c = pushback_buffer[--pushback_index];
6315                 else
6316                         c = lgetc(0);
6317                 if (c == '\n') {
6318                         file->lineno++;
6319                         break;
6320                 }
6321                 if (c == EOF)
6322                         break;
6323         }
6324         return (ERROR);
6325 }
6326
6327 int
6328 yylex(void)
6329 {
6330         char     buf[8096];
6331         char    *p, *val;
6332         int      quotec, next, c;
6333         int      token;
6334
6335 top:
6336         p = buf;
6337         while ((c = lgetc(0)) == ' ' || c == '\t')
6338                 ; /* nothing */
6339
6340         yylval.lineno = file->lineno;
6341         if (c == '#')
6342                 while ((c = lgetc(0)) != '\n' && c != EOF)
6343                         ; /* nothing */
6344         if (c == '$' && parsebuf == NULL) {
6345                 while (1) {
6346                         if ((c = lgetc(0)) == EOF)
6347                                 return (0);
6348
6349                         if (p + 1 >= buf + sizeof(buf) - 1) {
6350                                 yyerror("string too long");
6351                                 return (findeol());
6352                         }
6353                         if (isalnum(c) || c == '_') {
6354                                 *p++ = (char)c;
6355                                 continue;
6356                         }
6357                         *p = '\0';
6358                         lungetc(c);
6359                         break;
6360                 }
6361                 val = symget(buf);
6362                 if (val == NULL) {
6363                         yyerror("macro '%s' not defined", buf);
6364                         return (findeol());
6365                 }
6366                 parsebuf = val;
6367                 parseindex = 0;
6368                 goto top;
6369         }
6370
6371         switch (c) {
6372         case '\'':
6373         case '"':
6374                 quotec = c;
6375                 while (1) {
6376                         if ((c = lgetc(quotec)) == EOF)
6377                                 return (0);
6378                         if (c == '\n') {
6379                                 file->lineno++;
6380                                 continue;
6381                         } else if (c == '\\') {
6382                                 if ((next = lgetc(quotec)) == EOF)
6383                                         return (0);
6384                                 if (next == quotec || c == ' ' || c == '\t')
6385                                         c = next;
6386                                 else if (next == '\n') {
6387                                         file->lineno++;
6388                                         continue;
6389                                 }
6390                                 else
6391                                         lungetc(next);
6392                         } else if (c == quotec) {
6393                                 *p = '\0';
6394                                 break;
6395                         }
6396                         if (p + 1 >= buf + sizeof(buf) - 1) {
6397                                 yyerror("string too long");
6398                                 return (findeol());
6399                         }
6400                         *p++ = (char)c;
6401                 }
6402                 yylval.v.string = strdup(buf);
6403                 if (yylval.v.string == NULL)
6404                         err(1, "yylex: strdup");
6405                 return (STRING);
6406         case '<':
6407                 next = lgetc(0);
6408                 if (next == '>') {
6409                         yylval.v.i = PF_OP_XRG;
6410                         return (PORTBINARY);
6411                 }
6412                 lungetc(next);
6413                 break;
6414         case '>':
6415                 next = lgetc(0);
6416                 if (next == '<') {
6417                         yylval.v.i = PF_OP_IRG;
6418                         return (PORTBINARY);
6419                 }
6420                 lungetc(next);
6421                 break;
6422         case '-':
6423                 next = lgetc(0);
6424                 if (next == '>')
6425                         return (ARROW);
6426                 lungetc(next);
6427                 break;
6428         }
6429
6430 #define allowed_to_end_number(x) \
6431         (isspace(x) || x == ')' || x ==',' || x == '/' || x == '}' || x == '=')
6432
6433         if (c == '-' || isdigit(c)) {
6434                 do {
6435                         *p++ = c;
6436                         if ((unsigned)(p-buf) >= sizeof(buf)) {
6437                                 yyerror("string too long");
6438                                 return (findeol());
6439                         }
6440                 } while ((c = lgetc(0)) != EOF && isdigit(c));
6441                 lungetc(c);
6442                 if (p == buf + 1 && buf[0] == '-')
6443                         goto nodigits;
6444                 if (c == EOF || allowed_to_end_number(c)) {
6445                         const char *errstr = NULL;
6446
6447                         *p = '\0';
6448                         yylval.v.number = strtonum(buf, LLONG_MIN,
6449                             LLONG_MAX, &errstr);
6450                         if (errstr) {
6451                                 yyerror("\"%s\" invalid number: %s",
6452                                     buf, errstr);
6453                                 return (findeol());
6454                         }
6455                         return (NUMBER);
6456                 } else {
6457 nodigits:
6458                         while (p > buf + 1)
6459                                 lungetc(*--p);
6460                         c = *--p;
6461                         if (c == '-')
6462                                 return (c);
6463                 }
6464         }
6465
6466 #define allowed_in_string(x) \
6467         (isalnum(x) || (ispunct(x) && x != '(' && x != ')' && \
6468         x != '{' && x != '}' && x != '<' && x != '>' && \
6469         x != '!' && x != '=' && x != '/' && x != '#' && \
6470         x != ','))
6471
6472         if (isalnum(c) || c == ':' || c == '_') {
6473                 do {
6474                         *p++ = c;
6475                         if ((unsigned)(p-buf) >= sizeof(buf)) {
6476                                 yyerror("string too long");
6477                                 return (findeol());
6478                         }
6479                 } while ((c = lgetc(0)) != EOF && (allowed_in_string(c)));
6480                 lungetc(c);
6481                 *p = '\0';
6482                 if ((token = lookup(buf)) == STRING)
6483                         if ((yylval.v.string = strdup(buf)) == NULL)
6484                                 err(1, "yylex: strdup");
6485                 return (token);
6486         }
6487         if (c == '\n') {
6488                 yylval.lineno = file->lineno;
6489                 file->lineno++;
6490         }
6491         if (c == EOF)
6492                 return (0);
6493         return (c);
6494 }
6495
6496 int
6497 check_file_secrecy(int fd, const char *fname)
6498 {
6499         struct stat     st;
6500
6501         if (fstat(fd, &st)) {
6502                 warn("cannot stat %s", fname);
6503                 return (-1);
6504         }
6505         if (st.st_uid != 0 && st.st_uid != getuid()) {
6506                 warnx("%s: owner not root or current user", fname);
6507                 return (-1);
6508         }
6509         if (st.st_mode & (S_IRWXG | S_IRWXO)) {
6510                 warnx("%s: group/world readable/writeable", fname);
6511                 return (-1);
6512         }
6513         return (0);
6514 }
6515
6516 struct file *
6517 pushfile(const char *name, int secret)
6518 {
6519         struct file     *nfile;
6520
6521         if ((nfile = calloc(1, sizeof(struct file))) == NULL ||
6522             (nfile->name = strdup(name)) == NULL) {
6523                 warn("malloc");
6524                 return (NULL);
6525         }
6526         if (TAILQ_FIRST(&files) == NULL && strcmp(nfile->name, "-") == 0) {
6527                 nfile->stream = stdin;
6528                 free(nfile->name);
6529                 if ((nfile->name = strdup("stdin")) == NULL) {
6530                         warn("strdup");
6531                         free(nfile);
6532                         return (NULL);
6533                 }
6534         } else if ((nfile->stream = fopen(nfile->name, "r")) == NULL) {
6535                 warn("%s", nfile->name);
6536                 free(nfile->name);
6537                 free(nfile);
6538                 return (NULL);
6539         } else if (secret &&
6540             check_file_secrecy(fileno(nfile->stream), nfile->name)) {
6541                 fclose(nfile->stream);
6542                 free(nfile->name);
6543                 free(nfile);
6544                 return (NULL);
6545         }
6546         nfile->lineno = 1;
6547         TAILQ_INSERT_TAIL(&files, nfile, entry);
6548         return (nfile);
6549 }
6550
6551 int
6552 popfile(void)
6553 {
6554         struct file     *prev;
6555
6556         if ((prev = TAILQ_PREV(file, files, entry)) != NULL) {
6557                 prev->errors += file->errors;
6558                 TAILQ_REMOVE(&files, file, entry);
6559                 fclose(file->stream);
6560                 free(file->name);
6561                 free(file);
6562                 file = prev;
6563                 return (0);
6564         }
6565         return (EOF);
6566 }
6567
6568 int
6569 parse_config(char *filename, struct pfctl *xpf)
6570 {
6571         int              errors = 0;
6572         struct sym      *sym;
6573
6574         pf = xpf;
6575         errors = 0;
6576         rulestate = PFCTL_STATE_NONE;
6577         returnicmpdefault = (ICMP_UNREACH << 8) | ICMP_UNREACH_PORT;
6578         returnicmp6default =
6579             (ICMP6_DST_UNREACH << 8) | ICMP6_DST_UNREACH_NOPORT;
6580         blockpolicy = PFRULE_DROP;
6581         failpolicy = PFRULE_DROP;
6582         require_order = 1;
6583
6584         if ((file = pushfile(filename, 0)) == NULL) {
6585                 warn("cannot open the main config file!");
6586                 return (-1);
6587         }
6588
6589         yyparse();
6590         errors = file->errors;
6591         popfile();
6592
6593         /* Free macros and check which have not been used. */
6594         while ((sym = TAILQ_FIRST(&symhead))) {
6595                 if ((pf->opts & PF_OPT_VERBOSE2) && !sym->used)
6596                         fprintf(stderr, "warning: macro '%s' not "
6597                             "used\n", sym->nam);
6598                 free(sym->nam);
6599                 free(sym->val);
6600                 TAILQ_REMOVE(&symhead, sym, entry);
6601                 free(sym);
6602         }
6603
6604         return (errors ? -1 : 0);
6605 }
6606
6607 int
6608 symset(const char *nam, const char *val, int persist)
6609 {
6610         struct sym      *sym;
6611
6612         for (sym = TAILQ_FIRST(&symhead); sym && strcmp(nam, sym->nam);
6613             sym = TAILQ_NEXT(sym, entry))
6614                 ;       /* nothing */
6615
6616         if (sym != NULL) {
6617                 if (sym->persist == 1)
6618                         return (0);
6619                 else {
6620                         free(sym->nam);
6621                         free(sym->val);
6622                         TAILQ_REMOVE(&symhead, sym, entry);
6623                         free(sym);
6624                 }
6625         }
6626         if ((sym = calloc(1, sizeof(*sym))) == NULL)
6627                 return (-1);
6628
6629         sym->nam = strdup(nam);
6630         if (sym->nam == NULL) {
6631                 free(sym);
6632                 return (-1);
6633         }
6634         sym->val = strdup(val);
6635         if (sym->val == NULL) {
6636                 free(sym->nam);
6637                 free(sym);
6638                 return (-1);
6639         }
6640         sym->used = 0;
6641         sym->persist = persist;
6642         TAILQ_INSERT_TAIL(&symhead, sym, entry);
6643         return (0);
6644 }
6645
6646 int
6647 pfctl_cmdline_symset(char *s)
6648 {
6649         char    *sym, *val;
6650         int      ret;
6651
6652         if ((val = strrchr(s, '=')) == NULL)
6653                 return (-1);
6654
6655         if ((sym = malloc(strlen(s) - strlen(val) + 1)) == NULL)
6656                 err(1, "pfctl_cmdline_symset: malloc");
6657
6658         strlcpy(sym, s, strlen(s) - strlen(val) + 1);
6659
6660         ret = symset(sym, val + 1, 1);
6661         free(sym);
6662
6663         return (ret);
6664 }
6665
6666 char *
6667 symget(const char *nam)
6668 {
6669         struct sym      *sym;
6670
6671         TAILQ_FOREACH(sym, &symhead, entry)
6672                 if (strcmp(nam, sym->nam) == 0) {
6673                         sym->used = 1;
6674                         return (sym->val);
6675                 }
6676         return (NULL);
6677 }
6678
6679 void
6680 mv_rules(struct pfctl_ruleset *src, struct pfctl_ruleset *dst)
6681 {
6682         int i;
6683         struct pfctl_rule *r;
6684
6685         for (i = 0; i < PF_RULESET_MAX; ++i) {
6686                 while ((r = TAILQ_FIRST(src->rules[i].active.ptr))
6687                     != NULL) {
6688                         TAILQ_REMOVE(src->rules[i].active.ptr, r, entries);
6689                         TAILQ_INSERT_TAIL(dst->rules[i].active.ptr, r, entries);
6690                         dst->anchor->match++;
6691                 }
6692                 src->anchor->match = 0;
6693                 while ((r = TAILQ_FIRST(src->rules[i].inactive.ptr))
6694                     != NULL) {
6695                         TAILQ_REMOVE(src->rules[i].inactive.ptr, r, entries);
6696                         TAILQ_INSERT_TAIL(dst->rules[i].inactive.ptr,
6697                                 r, entries);
6698                 }
6699         }
6700 }
6701
6702 void
6703 mv_eth_rules(struct pfctl_eth_ruleset *src, struct pfctl_eth_ruleset *dst)
6704 {
6705         struct pfctl_eth_rule *r;
6706
6707         while ((r = TAILQ_FIRST(&src->rules)) != NULL) {
6708                 TAILQ_REMOVE(&src->rules, r, entries);
6709                 TAILQ_INSERT_TAIL(&dst->rules, r, entries);
6710                 dst->anchor->match++;
6711         }
6712         src->anchor->match = 0;
6713 }
6714
6715 void
6716 decide_address_family(struct node_host *n, sa_family_t *af)
6717 {
6718         if (*af != 0 || n == NULL)
6719                 return;
6720         *af = n->af;
6721         while ((n = n->next) != NULL) {
6722                 if (n->af != *af) {
6723                         *af = 0;
6724                         return;
6725                 }
6726         }
6727 }
6728
6729 void
6730 remove_invalid_hosts(struct node_host **nh, sa_family_t *af)
6731 {
6732         struct node_host        *n = *nh, *prev = NULL;
6733
6734         while (n != NULL) {
6735                 if (*af && n->af && n->af != *af) {
6736                         /* unlink and free n */
6737                         struct node_host *next = n->next;
6738
6739                         /* adjust tail pointer */
6740                         if (n == (*nh)->tail)
6741                                 (*nh)->tail = prev;
6742                         /* adjust previous node's next pointer */
6743                         if (prev == NULL)
6744                                 *nh = next;
6745                         else
6746                                 prev->next = next;
6747                         /* free node */
6748                         if (n->ifname != NULL)
6749                                 free(n->ifname);
6750                         free(n);
6751                         n = next;
6752                 } else {
6753                         if (n->af && !*af)
6754                                 *af = n->af;
6755                         prev = n;
6756                         n = n->next;
6757                 }
6758         }
6759 }
6760
6761 int
6762 invalid_redirect(struct node_host *nh, sa_family_t af)
6763 {
6764         if (!af) {
6765                 struct node_host *n;
6766
6767                 /* tables and dyniftl are ok without an address family */
6768                 for (n = nh; n != NULL; n = n->next) {
6769                         if (n->addr.type != PF_ADDR_TABLE &&
6770                             n->addr.type != PF_ADDR_DYNIFTL) {
6771                                 yyerror("address family not given and "
6772                                     "translation address expands to multiple "
6773                                     "address families");
6774                                 return (1);
6775                         }
6776                 }
6777         }
6778         if (nh == NULL) {
6779                 yyerror("no translation address with matching address family "
6780                     "found.");
6781                 return (1);
6782         }
6783         return (0);
6784 }
6785
6786 int
6787 atoul(char *s, u_long *ulvalp)
6788 {
6789         u_long   ulval;
6790         char    *ep;
6791
6792         errno = 0;
6793         ulval = strtoul(s, &ep, 0);
6794         if (s[0] == '\0' || *ep != '\0')
6795                 return (-1);
6796         if (errno == ERANGE && ulval == ULONG_MAX)
6797                 return (-1);
6798         *ulvalp = ulval;
6799         return (0);
6800 }
6801
6802 int
6803 getservice(char *n)
6804 {
6805         struct servent  *s;
6806         u_long           ulval;
6807
6808         if (atoul(n, &ulval) == 0) {
6809                 if (ulval > 65535) {
6810                         yyerror("illegal port value %lu", ulval);
6811                         return (-1);
6812                 }
6813                 return (htons(ulval));
6814         } else {
6815                 s = getservbyname(n, "tcp");
6816                 if (s == NULL)
6817                         s = getservbyname(n, "udp");
6818                 if (s == NULL) {
6819                         yyerror("unknown port %s", n);
6820                         return (-1);
6821                 }
6822                 return (s->s_port);
6823         }
6824 }
6825
6826 int
6827 rule_label(struct pfctl_rule *r, char *s[PF_RULE_MAX_LABEL_COUNT])
6828 {
6829         for (int i = 0; i < PF_RULE_MAX_LABEL_COUNT; i++) {
6830                 if (s[i] == NULL)
6831                         return (0);
6832
6833                 if (strlcpy(r->label[i], s[i], sizeof(r->label[0])) >=
6834                     sizeof(r->label[0])) {
6835                         yyerror("rule label too long (max %d chars)",
6836                             sizeof(r->label[0])-1);
6837                         return (-1);
6838                 }
6839         }
6840         return (0);
6841 }
6842
6843 u_int16_t
6844 parseicmpspec(char *w, sa_family_t af)
6845 {
6846         const struct icmpcodeent        *p;
6847         u_long                           ulval;
6848         u_int8_t                         icmptype;
6849
6850         if (af == AF_INET)
6851                 icmptype = returnicmpdefault >> 8;
6852         else
6853                 icmptype = returnicmp6default >> 8;
6854
6855         if (atoul(w, &ulval) == -1) {
6856                 if ((p = geticmpcodebyname(icmptype, w, af)) == NULL) {
6857                         yyerror("unknown icmp code %s", w);
6858                         return (0);
6859                 }
6860                 ulval = p->code;
6861         }
6862         if (ulval > 255) {
6863                 yyerror("invalid icmp code %lu", ulval);
6864                 return (0);
6865         }
6866         return (icmptype << 8 | ulval);
6867 }
6868
6869 int
6870 parseport(char *port, struct range *r, int extensions)
6871 {
6872         char    *p = strchr(port, ':');
6873
6874         if (p == NULL) {
6875                 if ((r->a = getservice(port)) == -1)
6876                         return (-1);
6877                 r->b = 0;
6878                 r->t = PF_OP_NONE;
6879                 return (0);
6880         }
6881         if ((extensions & PPORT_STAR) && !strcmp(p+1, "*")) {
6882                 *p = 0;
6883                 if ((r->a = getservice(port)) == -1)
6884                         return (-1);
6885                 r->b = 0;
6886                 r->t = PF_OP_IRG;
6887                 return (0);
6888         }
6889         if ((extensions & PPORT_RANGE)) {
6890                 *p++ = 0;
6891                 if ((r->a = getservice(port)) == -1 ||
6892                     (r->b = getservice(p)) == -1)
6893                         return (-1);
6894                 if (r->a == r->b) {
6895                         r->b = 0;
6896                         r->t = PF_OP_NONE;
6897                 } else
6898                         r->t = PF_OP_RRG;
6899                 return (0);
6900         }
6901         return (-1);
6902 }
6903
6904 int
6905 pfctl_load_anchors(int dev, struct pfctl *pf, struct pfr_buffer *trans)
6906 {
6907         struct loadanchors      *la;
6908
6909         TAILQ_FOREACH(la, &loadanchorshead, entries) {
6910                 if (pf->opts & PF_OPT_VERBOSE)
6911                         fprintf(stderr, "\nLoading anchor %s from %s\n",
6912                             la->anchorname, la->filename);
6913                 if (pfctl_rules(dev, la->filename, pf->opts, pf->optimize,
6914                     la->anchorname, trans) == -1)
6915                         return (-1);
6916         }
6917
6918         return (0);
6919 }
6920
6921 int
6922 kw_casecmp(const void *k, const void *e)
6923 {
6924         return (strcasecmp(k, ((const struct keywords *)e)->k_name));
6925 }
6926
6927 int
6928 map_tos(char *s, int *val)
6929 {
6930         /* DiffServ Codepoints and other TOS mappings */
6931         const struct keywords    toswords[] = {
6932                 { "af11",               IPTOS_DSCP_AF11 },
6933                 { "af12",               IPTOS_DSCP_AF12 },
6934                 { "af13",               IPTOS_DSCP_AF13 },
6935                 { "af21",               IPTOS_DSCP_AF21 },
6936                 { "af22",               IPTOS_DSCP_AF22 },
6937                 { "af23",               IPTOS_DSCP_AF23 },
6938                 { "af31",               IPTOS_DSCP_AF31 },
6939                 { "af32",               IPTOS_DSCP_AF32 },
6940                 { "af33",               IPTOS_DSCP_AF33 },
6941                 { "af41",               IPTOS_DSCP_AF41 },
6942                 { "af42",               IPTOS_DSCP_AF42 },
6943                 { "af43",               IPTOS_DSCP_AF43 },
6944                 { "critical",           IPTOS_PREC_CRITIC_ECP },
6945                 { "cs0",                IPTOS_DSCP_CS0 },
6946                 { "cs1",                IPTOS_DSCP_CS1 },
6947                 { "cs2",                IPTOS_DSCP_CS2 },
6948                 { "cs3",                IPTOS_DSCP_CS3 },
6949                 { "cs4",                IPTOS_DSCP_CS4 },
6950                 { "cs5",                IPTOS_DSCP_CS5 },
6951                 { "cs6",                IPTOS_DSCP_CS6 },
6952                 { "cs7",                IPTOS_DSCP_CS7 },
6953                 { "ef",                 IPTOS_DSCP_EF },
6954                 { "inetcontrol",        IPTOS_PREC_INTERNETCONTROL },
6955                 { "lowdelay",           IPTOS_LOWDELAY },
6956                 { "netcontrol",         IPTOS_PREC_NETCONTROL },
6957                 { "reliability",        IPTOS_RELIABILITY },
6958                 { "throughput",         IPTOS_THROUGHPUT },
6959                 { "va",                 IPTOS_DSCP_VA }
6960         };
6961         const struct keywords   *p;
6962
6963         p = bsearch(s, toswords, sizeof(toswords)/sizeof(toswords[0]),
6964             sizeof(toswords[0]), kw_casecmp);
6965
6966         if (p) {
6967                 *val = p->k_val;
6968                 return (1);
6969         }
6970         return (0);
6971 }
6972
6973 int
6974 rt_tableid_max(void)
6975 {
6976 #ifdef __FreeBSD__
6977         int fibs;
6978         size_t l = sizeof(fibs);
6979
6980         if (sysctlbyname("net.fibs", &fibs, &l, NULL, 0) == -1)
6981                 fibs = 16;      /* XXX RT_MAXFIBS, at least limit it some. */
6982         /*
6983          * As the OpenBSD code only compares > and not >= we need to adjust
6984          * here given we only accept values of 0..n and want to avoid #ifdefs
6985          * in the grammar.
6986          */
6987         return (fibs - 1);
6988 #else
6989         return (RT_TABLEID_MAX);
6990 #endif
6991 }
6992
6993 struct node_mac*
6994 node_mac_from_string(const char *str)
6995 {
6996         struct node_mac *m;
6997
6998         m = calloc(1, sizeof(struct node_mac));
6999         if (m == NULL)
7000                 err(1, "mac: calloc");
7001
7002         if (sscanf(str, "%02hhx:%02hhx:%02hhx:%02hhx:%02hhx:%02hhx",
7003             &m->mac[0], &m->mac[1], &m->mac[2], &m->mac[3], &m->mac[4],
7004             &m->mac[5]) != 6) {
7005                 free(m);
7006                 yyerror("invalid MAC address");
7007                 return (NULL);
7008         }
7009
7010         memset(m->mask, 0xff, ETHER_ADDR_LEN);
7011         m->isset = true;
7012         m->next = NULL;
7013         m->tail = m;
7014
7015         return (m);
7016 }
7017
7018 struct node_mac*
7019 node_mac_from_string_masklen(const char *str, int masklen)
7020 {
7021         struct node_mac *m;
7022
7023         if (masklen < 0 || masklen > (ETHER_ADDR_LEN * 8)) {
7024                 yyerror("invalid MAC mask length");
7025                 return (NULL);
7026         }
7027
7028         m = node_mac_from_string(str);
7029         if (m == NULL)
7030                 return (NULL);
7031
7032         memset(m->mask, 0, ETHER_ADDR_LEN);
7033         for (int i = 0; i < masklen; i++)
7034                 m->mask[i / 8] |= 1 << (i % 8);
7035
7036         return (m);
7037 }
7038
7039 struct node_mac*
7040 node_mac_from_string_mask(const char *str, const char *mask)
7041 {
7042         struct node_mac *m;
7043
7044         m = node_mac_from_string(str);
7045         if (m == NULL)
7046                 return (NULL);
7047
7048         if (sscanf(mask, "%02hhx:%02hhx:%02hhx:%02hhx:%02hhx:%02hhx",
7049             &m->mask[0], &m->mask[1], &m->mask[2], &m->mask[3], &m->mask[4],
7050             &m->mask[5]) != 6) {
7051                 free(m);
7052                 yyerror("invalid MAC mask");
7053                 return (NULL);
7054         }
7055
7056         return (m);
7057 }