sbin/pfctl/parse.y

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