sbin/pfctl/parse.y

   1 /*      $OpenBSD: parse.y,v 1.554 2008/10/17 12:59:53 henning Exp $     */
   2
   3 /*-
   4  * SPDX-License-Identifier: BSD-2-Clause
   5  *
   6  * Copyright (c) 2001 Markus Friedl.  All rights reserved.
   7  * Copyright (c) 2001 Daniel Hartmeier.  All rights reserved.
   8  * Copyright (c) 2001 Theo de Raadt.  All rights reserved.
   9  * Copyright (c) 2002,2003 Henning Brauer. All rights reserved.
  10  *
  11  * Redistribution and use in source and binary forms, with or without
  12  * modification, are permitted provided that the following conditions
  13  * are met:
  14  * 1. Redistributions of source code must retain the above copyright
  15  *    notice, this list of conditions and the following disclaimer.
  16  * 2. Redistributions in binary form must reproduce the above copyright
  17  *    notice, this list of conditions and the following disclaimer in the
  18  *    documentation and/or other materials provided with the distribution.
  19  *
  20  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  21  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  22  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  23  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  24  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  25  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  26  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  27  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  28  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  29  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  30  */
  31 %{
  32 #include <sys/cdefs.h>
  33 __FBSDID("$FreeBSD$");
  34
  35 #define PFIOC_USE_LATEST
  36
  37 #include <sys/types.h>
  38 #include <sys/socket.h>
  39 #include <sys/stat.h>
  40 #ifdef __FreeBSD__
  41 #include <sys/sysctl.h>
  42 #endif
  43 #include <net/if.h>
  44 #include <netinet/in.h>
  45 #include <netinet/in_systm.h>
  46 #include <netinet/ip.h>
  47 #include <netinet/ip_icmp.h>
  48 #include <netinet/icmp6.h>
  49 #include <net/pfvar.h>
  50 #include <arpa/inet.h>
  51 #include <net/altq/altq.h>
  52 #include <net/altq/altq_cbq.h>
  53 #include <net/altq/altq_codel.h>
  54 #include <net/altq/altq_priq.h>
  55 #include <net/altq/altq_hfsc.h>
  56 #include <net/altq/altq_fairq.h>
  57
  58 #include <assert.h>
  59 #include <stdio.h>
  60 #include <unistd.h>
  61 #include <stdlib.h>
  62 #include <netdb.h>
  63 #include <stdarg.h>
  64 #include <errno.h>
  65 #include <string.h>
  66 #include <ctype.h>
  67 #include <math.h>
  68 #include <err.h>
  69 #include <limits.h>
  70 #include <pwd.h>
  71 #include <grp.h>
  72 #include <md5.h>
  73
  74 #include "pfctl_parser.h"
  75 #include "pfctl.h"
  76
  77 static struct pfctl     *pf = NULL;
  78 static int               debug = 0;
  79 static int               rulestate = 0;
  80 static u_int16_t         returnicmpdefault =
  81                             (ICMP_UNREACH << 8) | ICMP_UNREACH_PORT;
  82 static u_int16_t         returnicmp6default =
  83                             (ICMP6_DST_UNREACH << 8) | ICMP6_DST_UNREACH_NOPORT;
  84 static int               blockpolicy = PFRULE_DROP;
  85 static int               failpolicy = PFRULE_DROP;
  86 static int               require_order = 1;
  87 static int               default_statelock;
  88
  89 static TAILQ_HEAD(files, file)   files = TAILQ_HEAD_INITIALIZER(files);
  90 static struct file {
  91         TAILQ_ENTRY(file)        entry;
  92         FILE                    *stream;
  93         char                    *name;
  94         int                      lineno;
  95         int                      errors;
  96 } *file;
  97 struct file     *pushfile(const char *, int);
  98 int              popfile(void);
  99 int              check_file_secrecy(int, const char *);
 100 int              yyparse(void);
 101 int              yylex(void);
 102 int              yyerror(const char *, ...);
 103 int              kw_cmp(const void *, const void *);
 104 int              lookup(char *);
 105 int              lgetc(int);
 106 int              lungetc(int);
 107 int              findeol(void);
 108
 109 static TAILQ_HEAD(symhead, sym)  symhead = TAILQ_HEAD_INITIALIZER(symhead);
 110 struct sym {
 111         TAILQ_ENTRY(sym)         entry;
 112         int                      used;
 113         int                      persist;
 114         char                    *nam;
 115         char                    *val;
 116 };
 117 int              symset(const char *, const char *, int);
 118 char            *symget(const char *);
 119
 120 int              atoul(char *, u_long *);
 121
 122 enum {
 123         PFCTL_STATE_NONE,
 124         PFCTL_STATE_OPTION,
 125         PFCTL_STATE_ETHER,
 126         PFCTL_STATE_SCRUB,
 127         PFCTL_STATE_QUEUE,
 128         PFCTL_STATE_NAT,
 129         PFCTL_STATE_FILTER
 130 };
 131
 132 struct node_etherproto {
 133         u_int16_t                proto;
 134         struct node_etherproto  *next;
 135         struct node_etherproto  *tail;
 136 };
 137
 138 struct node_proto {
 139         u_int8_t                 proto;
 140         struct node_proto       *next;
 141         struct node_proto       *tail;
 142 };
 143
 144 struct node_port {
 145         u_int16_t                port[2];
 146         u_int8_t                 op;
 147         struct node_port        *next;
 148         struct node_port        *tail;
 149 };
 150
 151 struct node_uid {
 152         uid_t                    uid[2];
 153         u_int8_t                 op;
 154         struct node_uid         *next;
 155         struct node_uid         *tail;
 156 };
 157
 158 struct node_gid {
 159         gid_t                    gid[2];
 160         u_int8_t                 op;
 161         struct node_gid         *next;
 162         struct node_gid         *tail;
 163 };
 164
 165 struct node_icmp {
 166         u_int8_t                 code;
 167         u_int8_t                 type;
 168         u_int8_t                 proto;
 169         struct node_icmp        *next;
 170         struct node_icmp        *tail;
 171 };
 172
 173 enum    { PF_STATE_OPT_MAX, PF_STATE_OPT_NOSYNC, PF_STATE_OPT_SRCTRACK,
 174             PF_STATE_OPT_MAX_SRC_STATES, PF_STATE_OPT_MAX_SRC_CONN,
 175             PF_STATE_OPT_MAX_SRC_CONN_RATE, PF_STATE_OPT_MAX_SRC_NODES,
 176             PF_STATE_OPT_OVERLOAD, PF_STATE_OPT_STATELOCK,
 177             PF_STATE_OPT_TIMEOUT, PF_STATE_OPT_SLOPPY, };
 178
 179 enum    { PF_SRCTRACK_NONE, PF_SRCTRACK, PF_SRCTRACK_GLOBAL, PF_SRCTRACK_RULE };
 180
 181 struct node_state_opt {
 182         int                      type;
 183         union {
 184                 u_int32_t        max_states;
 185                 u_int32_t        max_src_states;
 186                 u_int32_t        max_src_conn;
 187                 struct {
 188                         u_int32_t       limit;
 189                         u_int32_t       seconds;
 190                 }                max_src_conn_rate;
 191                 struct {
 192                         u_int8_t        flush;
 193                         char            tblname[PF_TABLE_NAME_SIZE];
 194                 }                overload;
 195                 u_int32_t        max_src_nodes;
 196                 u_int8_t         src_track;
 197                 u_int32_t        statelock;
 198                 struct {
 199                         int             number;
 200                         u_int32_t       seconds;
 201                 }                timeout;
 202         }                        data;
 203         struct node_state_opt   *next;
 204         struct node_state_opt   *tail;
 205 };
 206
 207 struct peer {
 208         struct node_host        *host;
 209         struct node_port        *port;
 210 };
 211
 212 static struct node_queue {
 213         char                     queue[PF_QNAME_SIZE];
 214         char                     parent[PF_QNAME_SIZE];
 215         char                     ifname[IFNAMSIZ];
 216         int                      scheduler;
 217         struct node_queue       *next;
 218         struct node_queue       *tail;
 219 }       *queues = NULL;
 220
 221 struct node_qassign {
 222         char            *qname;
 223         char            *pqname;
 224 };
 225
 226 static struct filter_opts {
 227         int                      marker;
 228 #define FOM_FLAGS       0x01
 229 #define FOM_ICMP        0x02
 230 #define FOM_TOS         0x04
 231 #define FOM_KEEP        0x08
 232 #define FOM_SRCTRACK    0x10
 233 #define FOM_SETPRIO     0x0400
 234 #define FOM_PRIO        0x2000
 235         struct node_uid         *uid;
 236         struct node_gid         *gid;
 237         struct {
 238                 u_int8_t         b1;
 239                 u_int8_t         b2;
 240                 u_int16_t        w;
 241                 u_int16_t        w2;
 242         } flags;
 243         struct node_icmp        *icmpspec;
 244         u_int32_t                tos;
 245         u_int32_t                prob;
 246         u_int32_t                ridentifier;
 247         struct {
 248                 int                      action;
 249                 struct node_state_opt   *options;
 250         } keep;
 251         int                      fragment;
 252         int                      allowopts;
 253         char                    *label[PF_RULE_MAX_LABEL_COUNT];
 254         int                      labelcount;
 255         struct node_qassign      queues;
 256         char                    *tag;
 257         char                    *match_tag;
 258         u_int8_t                 match_tag_not;
 259         u_int16_t                dnpipe;
 260         u_int16_t                dnrpipe;
 261         u_int32_t                free_flags;
 262         u_int                    rtableid;
 263         u_int8_t                 prio;
 264         u_int8_t                 set_prio[2];
 265         struct {
 266                 struct node_host        *addr;
 267                 u_int16_t               port;
 268         }                        divert;
 269 } filter_opts;
 270
 271 static struct antispoof_opts {
 272         char                    *label[PF_RULE_MAX_LABEL_COUNT];
 273         int                      labelcount;
 274         u_int32_t                ridentifier;
 275         u_int                    rtableid;
 276 } antispoof_opts;
 277
 278 static struct scrub_opts {
 279         int                      marker;
 280 #define SOM_MINTTL      0x01
 281 #define SOM_MAXMSS      0x02
 282 #define SOM_FRAGCACHE   0x04
 283 #define SOM_SETTOS      0x08
 284         int                      nodf;
 285         int                      minttl;
 286         int                      maxmss;
 287         int                      settos;
 288         int                      fragcache;
 289         int                      randomid;
 290         int                      reassemble_tcp;
 291         char                    *match_tag;
 292         u_int8_t                 match_tag_not;
 293         u_int                    rtableid;
 294 } scrub_opts;
 295
 296 static struct queue_opts {
 297         int                     marker;
 298 #define QOM_BWSPEC      0x01
 299 #define QOM_SCHEDULER   0x02
 300 #define QOM_PRIORITY    0x04
 301 #define QOM_TBRSIZE     0x08
 302 #define QOM_QLIMIT      0x10
 303         struct node_queue_bw    queue_bwspec;
 304         struct node_queue_opt   scheduler;
 305         int                     priority;
 306         unsigned int            tbrsize;
 307         int                     qlimit;
 308 } queue_opts;
 309
 310 static struct table_opts {
 311         int                     flags;
 312         int                     init_addr;
 313         struct node_tinithead   init_nodes;
 314 } table_opts;
 315
 316 static struct pool_opts {
 317         int                      marker;
 318 #define POM_TYPE                0x01
 319 #define POM_STICKYADDRESS       0x02
 320         u_int8_t                 opts;
 321         int                      type;
 322         int                      staticport;
 323         struct pf_poolhashkey   *key;
 324         struct pf_mape_portset   mape;
 325
 326 } pool_opts;
 327
 328 static struct codel_opts         codel_opts;
 329 static struct node_hfsc_opts     hfsc_opts;
 330 static struct node_fairq_opts    fairq_opts;
 331 static struct node_state_opt    *keep_state_defaults = NULL;
 332 static struct pfctl_watermarks   syncookie_opts;
 333
 334 int              disallow_table(struct node_host *, const char *);
 335 int              disallow_urpf_failed(struct node_host *, const char *);
 336 int              disallow_alias(struct node_host *, const char *);
 337 int              rule_consistent(struct pfctl_rule *, int);
 338 int              filter_consistent(struct pfctl_rule *, int);
 339 int              nat_consistent(struct pfctl_rule *);
 340 int              rdr_consistent(struct pfctl_rule *);
 341 int              process_tabledef(char *, struct table_opts *);
 342 void             expand_label_str(char *, size_t, const char *, const char *);
 343 void             expand_label_if(const char *, char *, size_t, const char *);
 344 void             expand_label_addr(const char *, char *, size_t, u_int8_t,
 345                     struct pf_rule_addr *);
 346 void             expand_label_port(const char *, char *, size_t,
 347                     struct pf_rule_addr *);
 348 void             expand_label_proto(const char *, char *, size_t, u_int8_t);
 349 void             expand_label_nr(const char *, char *, size_t,
 350                     struct pfctl_rule *);
 351 void             expand_eth_rule(struct pfctl_eth_rule *,
 352                     struct node_if *, struct node_etherproto *,
 353                     struct node_mac *, struct node_mac *,
 354                     struct node_host *, struct node_host *, const char *);
 355 void             expand_rule(struct pfctl_rule *, struct node_if *,
 356                     struct node_host *, struct node_proto *, struct node_os *,
 357                     struct node_host *, struct node_port *, struct node_host *,
 358                     struct node_port *, struct node_uid *, struct node_gid *,
 359                     struct node_icmp *, const char *);
 360 int              expand_altq(struct pf_altq *, struct node_if *,
 361                     struct node_queue *, struct node_queue_bw bwspec,
 362                     struct node_queue_opt *);
 363 int              expand_queue(struct pf_altq *, struct node_if *,
 364                     struct node_queue *, struct node_queue_bw,
 365                     struct node_queue_opt *);
 366 int              expand_skip_interface(struct node_if *);
 367
 368 int      check_rulestate(int);
 369 int      getservice(char *);
 370 int      rule_label(struct pfctl_rule *, char *s[PF_RULE_MAX_LABEL_COUNT]);
 371 int      rt_tableid_max(void);
 372
 373 void     mv_rules(struct pfctl_ruleset *, struct pfctl_ruleset *);
 374 void     mv_eth_rules(struct pfctl_eth_ruleset *, struct pfctl_eth_ruleset *);
 375 void     decide_address_family(struct node_host *, sa_family_t *);
 376 void     remove_invalid_hosts(struct node_host **, sa_family_t *);
 377 int      invalid_redirect(struct node_host *, sa_family_t);
 378 u_int16_t parseicmpspec(char *, sa_family_t);
 379 int      kw_casecmp(const void *, const void *);
 380 int      map_tos(char *string, int *);
 381 struct node_mac* node_mac_from_string(const char *);
 382 struct node_mac* node_mac_from_string_masklen(const char *, int);
 383 struct node_mac* node_mac_from_string_mask(const char *, const char *);
 384
 385 static TAILQ_HEAD(loadanchorshead, loadanchors)
 386     loadanchorshead = TAILQ_HEAD_INITIALIZER(loadanchorshead);
 387
 388 struct loadanchors {
 389         TAILQ_ENTRY(loadanchors)         entries;
 390         char                            *anchorname;
 391         char                            *filename;
 392 };
 393
 394 typedef struct {
 395         union {
 396                 int64_t                  number;
 397                 double                   probability;
 398                 int                      i;
 399                 char                    *string;
 400                 u_int                    rtableid;
 401                 struct {
 402                         u_int8_t         b1;
 403                         u_int8_t         b2;
 404                         u_int16_t        w;
 405                         u_int16_t        w2;
 406                 }                        b;
 407                 struct range {
 408                         int              a;
 409                         int              b;
 410                         int              t;
 411                 }                        range;
 412                 struct node_if          *interface;
 413                 struct node_proto       *proto;
 414                 struct node_etherproto  *etherproto;
 415                 struct node_icmp        *icmp;
 416                 struct node_host        *host;
 417                 struct node_os          *os;
 418                 struct node_port        *port;
 419                 struct node_uid         *uid;
 420                 struct node_gid         *gid;
 421                 struct node_state_opt   *state_opt;
 422                 struct peer              peer;
 423                 struct {
 424                         struct peer      src, dst;
 425                         struct node_os  *src_os;
 426                 }                        fromto;
 427                 struct {
 428                         struct node_mac *src;
 429                         struct node_mac *dst;
 430                 }                        etherfromto;
 431                 struct node_mac         *mac;
 432                 struct {
 433                         struct node_mac *mac;
 434                 } etheraddr;
 435                 struct {
 436                         struct node_host        *host;
 437                         u_int8_t                 rt;
 438                         u_int8_t                 pool_opts;
 439                         sa_family_t              af;
 440                         struct pf_poolhashkey   *key;
 441                 }                        route;
 442                 struct redirection {
 443                         struct node_host        *host;
 444                         struct range             rport;
 445                 }                       *redirection;
 446                 struct {
 447                         int                      action;
 448                         struct node_state_opt   *options;
 449                 }                        keep_state;
 450                 struct {
 451                         u_int8_t         log;
 452                         u_int8_t         logif;
 453                         u_int8_t         quick;
 454                 }                        logquick;
 455                 struct {
 456                         int              neg;
 457                         char            *name;
 458                 }                        tagged;
 459                 struct pf_poolhashkey   *hashkey;
 460                 struct node_queue       *queue;
 461                 struct node_queue_opt    queue_options;
 462                 struct node_queue_bw     queue_bwspec;
 463                 struct node_qassign      qassign;
 464                 struct filter_opts       filter_opts;
 465                 struct antispoof_opts    antispoof_opts;
 466                 struct queue_opts        queue_opts;
 467                 struct scrub_opts        scrub_opts;
 468                 struct table_opts        table_opts;
 469                 struct pool_opts         pool_opts;
 470                 struct node_hfsc_opts    hfsc_opts;
 471                 struct node_fairq_opts   fairq_opts;
 472                 struct codel_opts        codel_opts;
 473                 struct pfctl_watermarks *watermarks;
 474         } v;
 475         int lineno;
 476 } YYSTYPE;
 477
 478 #define PPORT_RANGE     1
 479 #define PPORT_STAR      2
 480 int     parseport(char *, struct range *r, int);
 481
 482 #define DYNIF_MULTIADDR(addr) ((addr).type == PF_ADDR_DYNIFTL && \
 483         (!((addr).iflags & PFI_AFLAG_NOALIAS) ||                 \
 484         !isdigit((addr).v.ifname[strlen((addr).v.ifname)-1])))
 485
 486 %}
 487
 488 %token  PASS BLOCK MATCH SCRUB RETURN IN OS OUT LOG QUICK ON FROM TO FLAGS
 489 %token  RETURNRST RETURNICMP RETURNICMP6 PROTO INET INET6 ALL ANY ICMPTYPE
 490 %token  ICMP6TYPE CODE KEEP MODULATE STATE PORT RDR NAT BINAT ARROW NODF
 491 %token  MINTTL ERROR ALLOWOPTS FASTROUTE FILENAME ROUTETO DUPTO REPLYTO NO LABEL
 492 %token  NOROUTE URPFFAILED FRAGMENT USER GROUP MAXMSS MAXIMUM TTL TOS DROP TABLE
 493 %token  REASSEMBLE FRAGDROP FRAGCROP ANCHOR NATANCHOR RDRANCHOR BINATANCHOR
 494 %token  SET OPTIMIZATION TIMEOUT LIMIT LOGINTERFACE BLOCKPOLICY FAILPOLICY
 495 %token  RANDOMID REQUIREORDER SYNPROXY FINGERPRINTS NOSYNC DEBUG SKIP HOSTID
 496 %token  ANTISPOOF FOR INCLUDE KEEPCOUNTERS SYNCOOKIES L3
 497 %token  ETHER
 498 %token  BITMASK RANDOM SOURCEHASH ROUNDROBIN STATICPORT PROBABILITY MAPEPORTSET
 499 %token  ALTQ CBQ CODEL PRIQ HFSC FAIRQ BANDWIDTH TBRSIZE LINKSHARE REALTIME
 500 %token  UPPERLIMIT QUEUE PRIORITY QLIMIT HOGS BUCKETS RTABLE TARGET INTERVAL
 501 %token  DNPIPE DNQUEUE RIDENTIFIER
 502 %token  LOAD RULESET_OPTIMIZATION PRIO
 503 %token  STICKYADDRESS MAXSRCSTATES MAXSRCNODES SOURCETRACK GLOBAL RULE
 504 %token  MAXSRCCONN MAXSRCCONNRATE OVERLOAD FLUSH SLOPPY
 505 %token  TAGGED TAG IFBOUND FLOATING STATEPOLICY STATEDEFAULTS ROUTE SETTOS
 506 %token  DIVERTTO DIVERTREPLY
 507 %token  <v.string>              STRING
 508 %token  <v.number>              NUMBER
 509 %token  <v.i>                   PORTBINARY
 510 %type   <v.interface>           interface if_list if_item_not if_item
 511 %type   <v.number>              number icmptype icmp6type uid gid
 512 %type   <v.number>              tos not yesno
 513 %type   <v.probability>         probability
 514 %type   <v.i>                   no dir af fragcache optimizer syncookie_val
 515 %type   <v.i>                   sourcetrack flush unaryop statelock
 516 %type   <v.i>                   etherprotoval
 517 %type   <v.b>                   action nataction natpasslog scrubaction
 518 %type   <v.b>                   flags flag blockspec prio
 519 %type   <v.range>               portplain portstar portrange
 520 %type   <v.hashkey>             hashkey
 521 %type   <v.proto>               proto proto_list proto_item
 522 %type   <v.number>              protoval
 523 %type   <v.icmp>                icmpspec
 524 %type   <v.icmp>                icmp_list icmp_item
 525 %type   <v.icmp>                icmp6_list icmp6_item
 526 %type   <v.number>              reticmpspec reticmp6spec
 527 %type   <v.fromto>              fromto l3fromto
 528 %type   <v.peer>                ipportspec from to
 529 %type   <v.host>                ipspec toipspec xhost host dynaddr host_list
 530 %type   <v.host>                redir_host_list redirspec
 531 %type   <v.host>                route_host route_host_list routespec
 532 %type   <v.os>                  os xos os_list
 533 %type   <v.port>                portspec port_list port_item
 534 %type   <v.uid>                 uids uid_list uid_item
 535 %type   <v.gid>                 gids gid_list gid_item
 536 %type   <v.route>               route
 537 %type   <v.redirection>         redirection redirpool
 538 %type   <v.string>              label stringall tag anchorname
 539 %type   <v.string>              string varstring numberstring
 540 %type   <v.keep_state>          keep
 541 %type   <v.state_opt>           state_opt_spec state_opt_list state_opt_item
 542 %type   <v.logquick>            logquick quick log logopts logopt
 543 %type   <v.interface>           antispoof_ifspc antispoof_iflst antispoof_if
 544 %type   <v.qassign>             qname etherqname
 545 %type   <v.queue>               qassign qassign_list qassign_item
 546 %type   <v.queue_options>       scheduler
 547 %type   <v.number>              cbqflags_list cbqflags_item
 548 %type   <v.number>              priqflags_list priqflags_item
 549 %type   <v.hfsc_opts>           hfscopts_list hfscopts_item hfsc_opts
 550 %type   <v.fairq_opts>          fairqopts_list fairqopts_item fairq_opts
 551 %type   <v.codel_opts>          codelopts_list codelopts_item codel_opts
 552 %type   <v.queue_bwspec>        bandwidth
 553 %type   <v.filter_opts>         filter_opts filter_opt filter_opts_l etherfilter_opts etherfilter_opt etherfilter_opts_l
 554 %type   <v.filter_opts>         filter_sets filter_set filter_sets_l
 555 %type   <v.antispoof_opts>      antispoof_opts antispoof_opt antispoof_opts_l
 556 %type   <v.queue_opts>          queue_opts queue_opt queue_opts_l
 557 %type   <v.scrub_opts>          scrub_opts scrub_opt scrub_opts_l
 558 %type   <v.table_opts>          table_opts table_opt table_opts_l
 559 %type   <v.pool_opts>           pool_opts pool_opt pool_opts_l
 560 %type   <v.tagged>              tagged
 561 %type   <v.rtableid>            rtable
 562 %type   <v.watermarks>          syncookie_opts
 563 %type   <v.etherproto>          etherproto etherproto_list etherproto_item
 564 %type   <v.etherfromto>         etherfromto
 565 %type   <v.etheraddr>           etherfrom etherto
 566 %type   <v.mac>                 xmac mac mac_list macspec
 567 %%
 568
 569 ruleset         : /* empty */
 570                 | ruleset include '\n'
 571                 | ruleset '\n'
 572                 | ruleset option '\n'
 573                 | ruleset etherrule '\n'
 574                 | ruleset etheranchorrule '\n'
 575                 | ruleset scrubrule '\n'
 576                 | ruleset natrule '\n'
 577                 | ruleset binatrule '\n'
 578                 | ruleset pfrule '\n'
 579                 | ruleset anchorrule '\n'
 580                 | ruleset loadrule '\n'
 581                 | ruleset altqif '\n'
 582                 | ruleset queuespec '\n'
 583                 | ruleset varset '\n'
 584                 | ruleset antispoof '\n'
 585                 | ruleset tabledef '\n'
 586                 | '{' fakeanchor '}' '\n';
 587                 | ruleset error '\n'            { file->errors++; }
 588                 ;
 589
 590 include         : INCLUDE STRING                {
 591                         struct file     *nfile;
 592
 593                         if ((nfile = pushfile($2, 0)) == NULL) {
 594                                 yyerror("failed to include file %s", $2);
 595                                 free($2);
 596                                 YYERROR;
 597                         }
 598                         free($2);
 599
 600                         file = nfile;
 601                         lungetc('\n');
 602                 }
 603                 ;
 604
 605 /*
 606  * apply to previouslys specified rule: must be careful to note
 607  * what that is: pf or nat or binat or rdr
 608  */
 609 fakeanchor      : fakeanchor '\n'
 610                 | fakeanchor anchorrule '\n'
 611                 | fakeanchor binatrule '\n'
 612                 | fakeanchor natrule '\n'
 613                 | fakeanchor pfrule '\n'
 614                 | fakeanchor error '\n'
 615                 ;
 616
 617 optimizer       : string        {
 618                         if (!strcmp($1, "none"))
 619                                 $$ = 0;
 620                         else if (!strcmp($1, "basic"))
 621                                 $$ = PF_OPTIMIZE_BASIC;
 622                         else if (!strcmp($1, "profile"))
 623                                 $$ = PF_OPTIMIZE_BASIC | PF_OPTIMIZE_PROFILE;
 624                         else {
 625                                 yyerror("unknown ruleset-optimization %s", $1);
 626                                 YYERROR;
 627                         }
 628                 }
 629                 ;
 630
 631 option          : SET OPTIMIZATION STRING               {
 632                         if (check_rulestate(PFCTL_STATE_OPTION)) {
 633                                 free($3);
 634                                 YYERROR;
 635                         }
 636                         if (pfctl_set_optimization(pf, $3) != 0) {
 637                                 yyerror("unknown optimization %s", $3);
 638                                 free($3);
 639                                 YYERROR;
 640                         }
 641                         free($3);
 642                 }
 643                 | SET RULESET_OPTIMIZATION optimizer {
 644                         if (!(pf->opts & PF_OPT_OPTIMIZE)) {
 645                                 pf->opts |= PF_OPT_OPTIMIZE;
 646                                 pf->optimize = $3;
 647                         }
 648                 }
 649                 | SET TIMEOUT timeout_spec
 650                 | SET TIMEOUT '{' optnl timeout_list '}'
 651                 | SET LIMIT limit_spec
 652                 | SET LIMIT '{' optnl limit_list '}'
 653                 | SET LOGINTERFACE stringall            {
 654                         if (check_rulestate(PFCTL_STATE_OPTION)) {
 655                                 free($3);
 656                                 YYERROR;
 657                         }
 658                         if (pfctl_set_logif(pf, $3) != 0) {
 659                                 yyerror("error setting loginterface %s", $3);
 660                                 free($3);
 661                                 YYERROR;
 662                         }
 663                         free($3);
 664                 }
 665                 | SET HOSTID number {
 666                         if ($3 == 0 || $3 > UINT_MAX) {
 667                                 yyerror("hostid must be non-zero");
 668                                 YYERROR;
 669                         }
 670                         if (pfctl_set_hostid(pf, $3) != 0) {
 671                                 yyerror("error setting hostid %08x", $3);
 672                                 YYERROR;
 673                         }
 674                 }
 675                 | SET BLOCKPOLICY DROP  {
 676                         if (pf->opts & PF_OPT_VERBOSE)
 677                                 printf("set block-policy drop\n");
 678                         if (check_rulestate(PFCTL_STATE_OPTION))
 679                                 YYERROR;
 680                         blockpolicy = PFRULE_DROP;
 681                 }
 682                 | SET BLOCKPOLICY RETURN {
 683                         if (pf->opts & PF_OPT_VERBOSE)
 684                                 printf("set block-policy return\n");
 685                         if (check_rulestate(PFCTL_STATE_OPTION))
 686                                 YYERROR;
 687                         blockpolicy = PFRULE_RETURN;
 688                 }
 689                 | SET FAILPOLICY DROP   {
 690                         if (pf->opts & PF_OPT_VERBOSE)
 691                                 printf("set fail-policy drop\n");
 692                         if (check_rulestate(PFCTL_STATE_OPTION))
 693                                 YYERROR;
 694                         failpolicy = PFRULE_DROP;
 695                 }
 696                 | SET FAILPOLICY RETURN {
 697                         if (pf->opts & PF_OPT_VERBOSE)
 698                                 printf("set fail-policy return\n");
 699                         if (check_rulestate(PFCTL_STATE_OPTION))
 700                                 YYERROR;
 701                         failpolicy = PFRULE_RETURN;
 702                 }
 703                 | SET REQUIREORDER yesno {
 704                         if (pf->opts & PF_OPT_VERBOSE)
 705                                 printf("set require-order %s\n",
 706                                     $3 == 1 ? "yes" : "no");
 707                         require_order = $3;
 708                 }
 709                 | SET FINGERPRINTS STRING {
 710                         if (pf->opts & PF_OPT_VERBOSE)
 711                                 printf("set fingerprints \"%s\"\n", $3);
 712                         if (check_rulestate(PFCTL_STATE_OPTION)) {
 713                                 free($3);
 714                                 YYERROR;
 715                         }
 716                         if (!pf->anchor->name[0]) {
 717                                 if (pfctl_file_fingerprints(pf->dev,
 718                                     pf->opts, $3)) {
 719                                         yyerror("error loading "
 720                                             "fingerprints %s", $3);
 721                                         free($3);
 722                                         YYERROR;
 723                                 }
 724                         }
 725                         free($3);
 726                 }
 727                 | SET STATEPOLICY statelock {
 728                         if (pf->opts & PF_OPT_VERBOSE)
 729                                 switch ($3) {
 730                                 case 0:
 731                                         printf("set state-policy floating\n");
 732                                         break;
 733                                 case PFRULE_IFBOUND:
 734                                         printf("set state-policy if-bound\n");
 735                                         break;
 736                                 }
 737                         default_statelock = $3;
 738                 }
 739                 | SET DEBUG STRING {
 740                         if (check_rulestate(PFCTL_STATE_OPTION)) {
 741                                 free($3);
 742                                 YYERROR;
 743                         }
 744                         if (pfctl_set_debug(pf, $3) != 0) {
 745                                 yyerror("error setting debuglevel %s", $3);
 746                                 free($3);
 747                                 YYERROR;
 748                         }
 749                         free($3);
 750                 }
 751                 | SET SKIP interface {
 752                         if (expand_skip_interface($3) != 0) {
 753                                 yyerror("error setting skip interface(s)");
 754                                 YYERROR;
 755                         }
 756                 }
 757                 | SET STATEDEFAULTS state_opt_list {
 758                         if (keep_state_defaults != NULL) {
 759                                 yyerror("cannot redefine state-defaults");
 760                                 YYERROR;
 761                         }
 762                         keep_state_defaults = $3;
 763                 }
 764                 | SET KEEPCOUNTERS {
 765                         pf->keep_counters = true;
 766                 }
 767                 | SET SYNCOOKIES syncookie_val syncookie_opts {
 768                         if (pfctl_cfg_syncookies(pf, $3, $4)) {
 769                                 yyerror("error setting syncookies");
 770                                 YYERROR;
 771                         }
 772                 }
 773                 ;
 774
 775 syncookie_val  : STRING        {
 776                         if (!strcmp($1, "never"))
 777                                 $$ = PFCTL_SYNCOOKIES_NEVER;
 778                         else if (!strcmp($1, "adaptive"))
 779                                 $$ = PFCTL_SYNCOOKIES_ADAPTIVE;
 780                         else if (!strcmp($1, "always"))
 781                                 $$ = PFCTL_SYNCOOKIES_ALWAYS;
 782                         else {
 783                                 yyerror("illegal value for syncookies");
 784                                 YYERROR;
 785                         }
 786                 }
 787                 ;
 788 syncookie_opts  : /* empty */                   { $$ = NULL; }
 789                 | {
 790                         memset(&syncookie_opts, 0, sizeof(syncookie_opts));
 791                   } '(' syncookie_opt_l ')'     { $$ = &syncookie_opts; }
 792                 ;
 793
 794 syncookie_opt_l : syncookie_opt_l comma syncookie_opt
 795                 | syncookie_opt
 796                 ;
 797
 798 syncookie_opt   : STRING STRING {
 799                         double   val;
 800                         char    *cp;
 801
 802                         val = strtod($2, &cp);
 803                         if (cp == NULL || strcmp(cp, "%"))
 804                                 YYERROR;
 805                         if (val <= 0 || val > 100) {
 806                                 yyerror("illegal percentage value");
 807                                 YYERROR;
 808                         }
 809                         if (!strcmp($1, "start")) {
 810                                 syncookie_opts.hi = val;
 811                         } else if (!strcmp($1, "end")) {
 812                                 syncookie_opts.lo = val;
 813                         } else {
 814                                 yyerror("illegal syncookie option");
 815                                 YYERROR;
 816                         }
 817                 }
 818                 ;
 819
 820 stringall       : STRING        { $$ = $1; }
 821                 | ALL           {
 822                         if (($$ = strdup("all")) == NULL) {
 823                                 err(1, "stringall: strdup");
 824                         }
 825                 }
 826                 ;
 827
 828 string          : STRING string                         {
 829                         if (asprintf(&$$, "%s %s", $1, $2) == -1)
 830                                 err(1, "string: asprintf");
 831                         free($1);
 832                         free($2);
 833                 }
 834                 | STRING
 835                 ;
 836
 837 varstring       : numberstring varstring                {
 838                         if (asprintf(&$$, "%s %s", $1, $2) == -1)
 839                                 err(1, "string: asprintf");
 840                         free($1);
 841                         free($2);
 842                 }
 843                 | numberstring
 844                 ;
 845
 846 numberstring    : NUMBER                                {
 847                         char    *s;
 848                         if (asprintf(&s, "%lld", (long long)$1) == -1) {
 849                                 yyerror("string: asprintf");
 850                                 YYERROR;
 851                         }
 852                         $$ = s;
 853                 }
 854                 | STRING
 855                 ;
 856
 857 varset          : STRING '=' varstring  {
 858                         char *s = $1;
 859                         if (pf->opts & PF_OPT_VERBOSE)
 860                                 printf("%s = \"%s\"\n", $1, $3);
 861                         while (*s++) {
 862                                 if (isspace((unsigned char)*s)) {
 863                                         yyerror("macro name cannot contain "
 864                                            "whitespace");
 865                                         YYERROR;
 866                                 }
 867                         }
 868                         if (symset($1, $3, 0) == -1)
 869                                 err(1, "cannot store variable %s", $1);
 870                         free($1);
 871                         free($3);
 872                 }
 873                 ;
 874
 875 anchorname      : STRING                        { $$ = $1; }
 876                 | /* empty */                   { $$ = NULL; }
 877                 ;
 878
 879 pfa_anchorlist  : /* empty */
 880                 | pfa_anchorlist '\n'
 881                 | pfa_anchorlist pfrule '\n'
 882                 | pfa_anchorlist anchorrule '\n'
 883                 ;
 884
 885 pfa_anchor      : '{'
 886                 {
 887                         char ta[PF_ANCHOR_NAME_SIZE];
 888                         struct pfctl_ruleset *rs;
 889
 890                         /* steping into a brace anchor */
 891                         pf->asd++;
 892                         pf->bn++;
 893
 894                         /* create a holding ruleset in the root */
 895                         snprintf(ta, PF_ANCHOR_NAME_SIZE, "_%d", pf->bn);
 896                         rs = pf_find_or_create_ruleset(ta);
 897                         if (rs == NULL)
 898                                 err(1, "pfa_anchor: pf_find_or_create_ruleset");
 899                         pf->astack[pf->asd] = rs->anchor;
 900                         pf->anchor = rs->anchor;
 901                 } '\n' pfa_anchorlist '}'
 902                 {
 903                         pf->alast = pf->anchor;
 904                         pf->asd--;
 905                         pf->anchor = pf->astack[pf->asd];
 906                 }
 907                 | /* empty */
 908                 ;
 909
 910 anchorrule      : ANCHOR anchorname dir quick interface af proto fromto
 911                     filter_opts pfa_anchor
 912                 {
 913                         struct pfctl_rule       r;
 914                         struct node_proto       *proto;
 915
 916                         if (check_rulestate(PFCTL_STATE_FILTER)) {
 917                                 if ($2)
 918                                         free($2);
 919                                 YYERROR;
 920                         }
 921
 922                         if ($2 && ($2[0] == '_' || strstr($2, "/_") != NULL)) {
 923                                 free($2);
 924                                 yyerror("anchor names beginning with '_' "
 925                                     "are reserved for internal use");
 926                                 YYERROR;
 927                         }
 928
 929                         memset(&r, 0, sizeof(r));
 930                         if (pf->astack[pf->asd + 1]) {
 931                                 /* move inline rules into relative location */
 932                                 pfctl_anchor_setup(&r,
 933                                     &pf->astack[pf->asd]->ruleset,
 934                                     $2 ? $2 : pf->alast->name);
 935
 936                                 if (r.anchor == NULL)
 937                                         err(1, "anchorrule: unable to "
 938                                             "create ruleset");
 939
 940                                 if (pf->alast != r.anchor) {
 941                                         if (r.anchor->match) {
 942                                                 yyerror("inline anchor '%s' "
 943                                                     "already exists",
 944                                                     r.anchor->name);
 945                                                 YYERROR;
 946                                         }
 947                                         mv_rules(&pf->alast->ruleset,
 948                                             &r.anchor->ruleset);
 949                                 }
 950                                 pf_remove_if_empty_ruleset(&pf->alast->ruleset);
 951                                 pf->alast = r.anchor;
 952                         } else {
 953                                 if (!$2) {
 954                                         yyerror("anchors without explicit "
 955                                             "rules must specify a name");
 956                                         YYERROR;
 957                                 }
 958                         }
 959                         r.direction = $3;
 960                         r.quick = $4.quick;
 961                         r.af = $6;
 962                         r.prob = $9.prob;
 963                         r.rtableid = $9.rtableid;
 964                         r.ridentifier = $9.ridentifier;
 965
 966                         if ($9.tag)
 967                                 if (strlcpy(r.tagname, $9.tag,
 968                                     PF_TAG_NAME_SIZE) >= PF_TAG_NAME_SIZE) {
 969                                         yyerror("tag too long, max %u chars",
 970                                             PF_TAG_NAME_SIZE - 1);
 971                                         YYERROR;
 972                                 }
 973                         if ($9.match_tag)
 974                                 if (strlcpy(r.match_tagname, $9.match_tag,
 975                                     PF_TAG_NAME_SIZE) >= PF_TAG_NAME_SIZE) {
 976                                         yyerror("tag too long, max %u chars",
 977                                             PF_TAG_NAME_SIZE - 1);
 978                                         YYERROR;
 979                                 }
 980                         r.match_tag_not = $9.match_tag_not;
 981                         if (rule_label(&r, $9.label))
 982                                 YYERROR;
 983                         for (int i = 0; i < PF_RULE_MAX_LABEL_COUNT; i++)
 984                                 free($9.label[i]);
 985                         r.flags = $9.flags.b1;
 986                         r.flagset = $9.flags.b2;
 987                         if (($9.flags.b1 & $9.flags.b2) != $9.flags.b1) {
 988                                 yyerror("flags always false");
 989                                 YYERROR;
 990                         }
 991                         if ($9.flags.b1 || $9.flags.b2 || $8.src_os) {
 992                                 for (proto = $7; proto != NULL &&
 993                                     proto->proto != IPPROTO_TCP;
 994                                     proto = proto->next)
 995                                         ;       /* nothing */
 996                                 if (proto == NULL && $7 != NULL) {
 997                                         if ($9.flags.b1 || $9.flags.b2)
 998                                                 yyerror(
 999                                                     "flags only apply to tcp");
1000                                         if ($8.src_os)
1001                                                 yyerror(
1002                                                     "OS fingerprinting only "
1003                                                     "applies to tcp");
1004                                         YYERROR;
1005                                 }
1006                         }
1007
1008                         r.tos = $9.tos;
1009
1010                         if ($9.keep.action) {
1011                                 yyerror("cannot specify state handling "
1012                                     "on anchors");
1013                                 YYERROR;
1014                         }
1015
1016                         if ($9.match_tag)
1017                                 if (strlcpy(r.match_tagname, $9.match_tag,
1018                                     PF_TAG_NAME_SIZE) >= PF_TAG_NAME_SIZE) {
1019                                         yyerror("tag too long, max %u chars",
1020                                             PF_TAG_NAME_SIZE - 1);
1021                                         YYERROR;
1022                                 }
1023                         r.match_tag_not = $9.match_tag_not;
1024                         if ($9.marker & FOM_PRIO) {
1025                                 if ($9.prio == 0)
1026                                         r.prio = PF_PRIO_ZERO;
1027                                 else
1028                                         r.prio = $9.prio;
1029                         }
1030                         if ($9.marker & FOM_SETPRIO) {
1031                                 r.set_prio[0] = $9.set_prio[0];
1032                                 r.set_prio[1] = $9.set_prio[1];
1033                                 r.scrub_flags |= PFSTATE_SETPRIO;
1034                         }
1035
1036                         decide_address_family($8.src.host, &r.af);
1037                         decide_address_family($8.dst.host, &r.af);
1038
1039                         expand_rule(&r, $5, NULL, $7, $8.src_os,
1040                             $8.src.host, $8.src.port, $8.dst.host, $8.dst.port,
1041                             $9.uid, $9.gid, $9.icmpspec,
1042                             pf->astack[pf->asd + 1] ? pf->alast->name : $2);
1043                         free($2);
1044                         pf->astack[pf->asd + 1] = NULL;
1045                 }
1046                 | NATANCHOR string interface af proto fromto rtable {
1047                         struct pfctl_rule       r;
1048
1049                         if (check_rulestate(PFCTL_STATE_NAT)) {
1050                                 free($2);
1051                                 YYERROR;
1052                         }
1053
1054                         memset(&r, 0, sizeof(r));
1055                         r.action = PF_NAT;
1056                         r.af = $4;
1057                         r.rtableid = $7;
1058
1059                         decide_address_family($6.src.host, &r.af);
1060                         decide_address_family($6.dst.host, &r.af);
1061
1062                         expand_rule(&r, $3, NULL, $5, $6.src_os,
1063                             $6.src.host, $6.src.port, $6.dst.host, $6.dst.port,
1064                             0, 0, 0, $2);
1065                         free($2);
1066                 }
1067                 | RDRANCHOR string interface af proto fromto rtable {
1068                         struct pfctl_rule       r;
1069
1070                         if (check_rulestate(PFCTL_STATE_NAT)) {
1071                                 free($2);
1072                                 YYERROR;
1073                         }
1074
1075                         memset(&r, 0, sizeof(r));
1076                         r.action = PF_RDR;
1077                         r.af = $4;
1078                         r.rtableid = $7;
1079
1080                         decide_address_family($6.src.host, &r.af);
1081                         decide_address_family($6.dst.host, &r.af);
1082
1083                         if ($6.src.port != NULL) {
1084                                 yyerror("source port parameter not supported"
1085                                     " in rdr-anchor");
1086                                 YYERROR;
1087                         }
1088                         if ($6.dst.port != NULL) {
1089                                 if ($6.dst.port->next != NULL) {
1090                                         yyerror("destination port list "
1091                                             "expansion not supported in "
1092                                             "rdr-anchor");
1093                                         YYERROR;
1094                                 } else if ($6.dst.port->op != PF_OP_EQ) {
1095                                         yyerror("destination port operators"
1096                                             " not supported in rdr-anchor");
1097                                         YYERROR;
1098                                 }
1099                                 r.dst.port[0] = $6.dst.port->port[0];
1100                                 r.dst.port[1] = $6.dst.port->port[1];
1101                                 r.dst.port_op = $6.dst.port->op;
1102                         }
1103
1104                         expand_rule(&r, $3, NULL, $5, $6.src_os,
1105                             $6.src.host, $6.src.port, $6.dst.host, $6.dst.port,
1106                             0, 0, 0, $2);
1107                         free($2);
1108                 }
1109                 | BINATANCHOR string interface af proto fromto rtable {
1110                         struct pfctl_rule       r;
1111
1112                         if (check_rulestate(PFCTL_STATE_NAT)) {
1113                                 free($2);
1114                                 YYERROR;
1115                         }
1116
1117                         memset(&r, 0, sizeof(r));
1118                         r.action = PF_BINAT;
1119                         r.af = $4;
1120                         r.rtableid = $7;
1121                         if ($5 != NULL) {
1122                                 if ($5->next != NULL) {
1123                                         yyerror("proto list expansion"
1124                                             " not supported in binat-anchor");
1125                                         YYERROR;
1126                                 }
1127                                 r.proto = $5->proto;
1128                                 free($5);
1129                         }
1130
1131                         if ($6.src.host != NULL || $6.src.port != NULL ||
1132                             $6.dst.host != NULL || $6.dst.port != NULL) {
1133                                 yyerror("fromto parameter not supported"
1134                                     " in binat-anchor");
1135                                 YYERROR;
1136                         }
1137
1138                         decide_address_family($6.src.host, &r.af);
1139                         decide_address_family($6.dst.host, &r.af);
1140
1141                         pfctl_append_rule(pf, &r, $2);
1142                         free($2);
1143                 }
1144                 ;
1145
1146 loadrule        : LOAD ANCHOR string FROM string        {
1147                         struct loadanchors      *loadanchor;
1148
1149                         if (strlen(pf->anchor->name) + 1 +
1150                             strlen($3) >= MAXPATHLEN) {
1151                                 yyerror("anchorname %s too long, max %u\n",
1152                                     $3, MAXPATHLEN - 1);
1153                                 free($3);
1154                                 YYERROR;
1155                         }
1156                         loadanchor = calloc(1, sizeof(struct loadanchors));
1157                         if (loadanchor == NULL)
1158                                 err(1, "loadrule: calloc");
1159                         if ((loadanchor->anchorname = malloc(MAXPATHLEN)) ==
1160                             NULL)
1161                                 err(1, "loadrule: malloc");
1162                         if (pf->anchor->name[0])
1163                                 snprintf(loadanchor->anchorname, MAXPATHLEN,
1164                                     "%s/%s", pf->anchor->name, $3);
1165                         else
1166                                 strlcpy(loadanchor->anchorname, $3, MAXPATHLEN);
1167                         if ((loadanchor->filename = strdup($5)) == NULL)
1168                                 err(1, "loadrule: strdup");
1169
1170                         TAILQ_INSERT_TAIL(&loadanchorshead, loadanchor,
1171                             entries);
1172
1173                         free($3);
1174                         free($5);
1175                 };
1176
1177 scrubaction     : no SCRUB {
1178                         $$.b2 = $$.w = 0;
1179                         if ($1)
1180                                 $$.b1 = PF_NOSCRUB;
1181                         else
1182                                 $$.b1 = PF_SCRUB;
1183                 }
1184                 ;
1185
1186 etherrule       : ETHER action dir quick interface etherproto etherfromto l3fromto etherfilter_opts
1187                 {
1188                         struct pfctl_eth_rule   r;
1189
1190                         bzero(&r, sizeof(r));
1191
1192                         if (check_rulestate(PFCTL_STATE_ETHER))
1193                                 YYERROR;
1194
1195                         r.action = $2.b1;
1196                         r.direction = $3;
1197                         r.quick = $4.quick;
1198                         if ($9.tag != NULL)
1199                                 memcpy(&r.tagname, $9.tag, sizeof(r.tagname));
1200                         if ($9.queues.qname != NULL)
1201                                 memcpy(&r.qname, $9.queues.qname, sizeof(r.qname));
1202                         r.dnpipe = $9.dnpipe;
1203                         r.dnflags = $9.free_flags;
1204
1205                         expand_eth_rule(&r, $5, $6, $7.src, $7.dst,
1206                             $8.src.host, $8.dst.host, "");
1207                 }
1208                 ;
1209
1210 etherpfa_anchorlist     : /* empty */
1211                 | etherpfa_anchorlist '\n'
1212                 | etherpfa_anchorlist etherrule '\n'
1213                 | etherpfa_anchorlist etheranchorrule '\n'
1214                 ;
1215
1216 etherpfa_anchor : '{'
1217                 {
1218                         char ta[PF_ANCHOR_NAME_SIZE];
1219                         struct pfctl_eth_ruleset *rs;
1220
1221                         /* steping into a brace anchor */
1222                         pf->asd++;
1223                         pf->bn++;
1224
1225                         /* create a holding ruleset in the root */
1226                         snprintf(ta, PF_ANCHOR_NAME_SIZE, "_%d", pf->bn);
1227                         rs = pf_find_or_create_eth_ruleset(ta);
1228                         if (rs == NULL)
1229                                 err(1, "etherpfa_anchor: pf_find_or_create_eth_ruleset");
1230                         pf->eastack[pf->asd] = rs->anchor;
1231                         pf->eanchor = rs->anchor;
1232                 } '\n' etherpfa_anchorlist '}'
1233                 {
1234                         pf->ealast = pf->eanchor;
1235                         pf->asd--;
1236                         pf->eanchor = pf->eastack[pf->asd];
1237                 }
1238                 | /* empty */
1239                 ;
1240
1241 etheranchorrule : ETHER ANCHOR anchorname dir quick interface etherproto etherfromto l3fromto etherpfa_anchor
1242                 {
1243                         struct pfctl_eth_rule   r;
1244
1245                         if (check_rulestate(PFCTL_STATE_ETHER)) {
1246                                 free($3);
1247                                 YYERROR;
1248                         }
1249
1250                         if ($3 && ($3[0] == '_' || strstr($3, "/_") != NULL)) {
1251                                 free($3);
1252                                 yyerror("anchor names beginning with '_' "
1253                                     "are reserved for internal use");
1254                                 YYERROR;
1255                         }
1256
1257                         memset(&r, 0, sizeof(r));
1258                         if (pf->eastack[pf->asd + 1]) {
1259                                 /* move inline rules into relative location */
1260                                 pfctl_eth_anchor_setup(pf, &r,
1261                                     &pf->eastack[pf->asd]->ruleset,
1262                                     $3 ? $3 : pf->ealast->name);
1263                                 if (r.anchor == NULL)
1264                                         err(1, "etheranchorrule: unable to "
1265                                             "create ruleset");
1266
1267                                 if (pf->ealast != r.anchor) {
1268                                         if (r.anchor->match) {
1269                                                 yyerror("inline anchor '%s' "
1270                                                     "already exists",
1271                                                     r.anchor->name);
1272                                                 YYERROR;
1273                                         }
1274                                         mv_eth_rules(&pf->ealast->ruleset,
1275                                             &r.anchor->ruleset);
1276                                 }
1277                                 pf_remove_if_empty_eth_ruleset(&pf->ealast->ruleset);
1278                                 pf->ealast = r.anchor;
1279                         } else {
1280                                 if (!$3) {
1281                                         yyerror("anchors without explicit "
1282                                             "rules must specify a name");
1283                                         YYERROR;
1284                                 }
1285                         }
1286
1287                         r.direction = $4;
1288                         r.quick = $5.quick;
1289
1290                         expand_eth_rule(&r, $6, $7, $8.src, $8.dst,
1291                             $9.src.host, $9.dst.host,
1292                             pf->eastack[pf->asd + 1] ? pf->ealast->name : $3);
1293
1294                         free($3);
1295                         pf->eastack[pf->asd + 1] = NULL;
1296                 }
1297                 ;
1298
1299 etherfilter_opts        :       {
1300                                 bzero(&filter_opts, sizeof filter_opts);
1301                         }
1302                     etherfilter_opts_l
1303                         { $$ = filter_opts; }
1304                 | /* empty */   {
1305                         bzero(&filter_opts, sizeof filter_opts);
1306                         $$ = filter_opts;
1307                 }
1308                 ;
1309
1310 etherfilter_opts_l      : etherfilter_opts_l etherfilter_opt
1311                         | etherfilter_opt
1312
1313 etherfilter_opt : etherqname    {
1314                         if (filter_opts.queues.qname) {
1315                                 yyerror("queue cannot be redefined");
1316                                 YYERROR;
1317                         }
1318                         filter_opts.queues = $1;
1319                 }
1320                 | TAG string                            {
1321                         filter_opts.tag = $2;
1322                 }
1323                 | DNPIPE number {
1324                         filter_opts.dnpipe = $2;
1325                         filter_opts.free_flags |= PFRULE_DN_IS_PIPE;
1326                 }
1327                 | DNQUEUE number {
1328                         filter_opts.dnpipe = $2;
1329                         filter_opts.free_flags |= PFRULE_DN_IS_QUEUE;
1330                 }
1331                 ;
1332
1333 scrubrule       : scrubaction dir logquick interface af proto fromto scrub_opts
1334                 {
1335                         struct pfctl_rule       r;
1336
1337                         if (check_rulestate(PFCTL_STATE_SCRUB))
1338                                 YYERROR;
1339
1340                         memset(&r, 0, sizeof(r));
1341
1342                         r.action = $1.b1;
1343                         r.direction = $2;
1344
1345                         r.log = $3.log;
1346                         r.logif = $3.logif;
1347                         if ($3.quick) {
1348                                 yyerror("scrub rules do not support 'quick'");
1349                                 YYERROR;
1350                         }
1351
1352                         r.af = $5;
1353                         if ($8.nodf)
1354                                 r.rule_flag |= PFRULE_NODF;
1355                         if ($8.randomid)
1356                                 r.rule_flag |= PFRULE_RANDOMID;
1357                         if ($8.reassemble_tcp) {
1358                                 if (r.direction != PF_INOUT) {
1359                                         yyerror("reassemble tcp rules can not "
1360                                             "specify direction");
1361                                         YYERROR;
1362                                 }
1363                                 r.rule_flag |= PFRULE_REASSEMBLE_TCP;
1364                         }
1365                         if ($8.minttl)
1366                                 r.min_ttl = $8.minttl;
1367                         if ($8.maxmss)
1368                                 r.max_mss = $8.maxmss;
1369                         if ($8.marker & SOM_SETTOS) {
1370                                 r.rule_flag |= PFRULE_SET_TOS;
1371                                 r.set_tos = $8.settos;
1372                         }
1373                         if ($8.fragcache)
1374                                 r.rule_flag |= $8.fragcache;
1375                         if ($8.match_tag)
1376                                 if (strlcpy(r.match_tagname, $8.match_tag,
1377                                     PF_TAG_NAME_SIZE) >= PF_TAG_NAME_SIZE) {
1378                                         yyerror("tag too long, max %u chars",
1379                                             PF_TAG_NAME_SIZE - 1);
1380                                         YYERROR;
1381                                 }
1382                         r.match_tag_not = $8.match_tag_not;
1383                         r.rtableid = $8.rtableid;
1384
1385                         expand_rule(&r, $4, NULL, $6, $7.src_os,
1386                             $7.src.host, $7.src.port, $7.dst.host, $7.dst.port,
1387                             NULL, NULL, NULL, "");
1388                 }
1389                 ;
1390
1391 scrub_opts      :       {
1392                                 bzero(&scrub_opts, sizeof scrub_opts);
1393                                 scrub_opts.rtableid = -1;
1394                         }
1395                     scrub_opts_l
1396                         { $$ = scrub_opts; }
1397                 | /* empty */ {
1398                         bzero(&scrub_opts, sizeof scrub_opts);
1399                         scrub_opts.rtableid = -1;
1400                         $$ = scrub_opts;
1401                 }
1402                 ;
1403
1404 scrub_opts_l    : scrub_opts_l scrub_opt
1405                 | scrub_opt
1406                 ;
1407
1408 scrub_opt       : NODF  {
1409                         if (scrub_opts.nodf) {
1410                                 yyerror("no-df cannot be respecified");
1411                                 YYERROR;
1412                         }
1413                         scrub_opts.nodf = 1;
1414                 }
1415                 | MINTTL NUMBER {
1416                         if (scrub_opts.marker & SOM_MINTTL) {
1417                                 yyerror("min-ttl cannot be respecified");
1418                                 YYERROR;
1419                         }
1420                         if ($2 < 0 || $2 > 255) {
1421                                 yyerror("illegal min-ttl value %d", $2);
1422                                 YYERROR;
1423                         }
1424                         scrub_opts.marker |= SOM_MINTTL;
1425                         scrub_opts.minttl = $2;
1426                 }
1427                 | MAXMSS NUMBER {
1428                         if (scrub_opts.marker & SOM_MAXMSS) {
1429                                 yyerror("max-mss cannot be respecified");
1430                                 YYERROR;
1431                         }
1432                         if ($2 < 0 || $2 > 65535) {
1433                                 yyerror("illegal max-mss value %d", $2);
1434                                 YYERROR;
1435                         }
1436                         scrub_opts.marker |= SOM_MAXMSS;
1437                         scrub_opts.maxmss = $2;
1438                 }
1439                 | SETTOS tos {
1440                         if (scrub_opts.marker & SOM_SETTOS) {
1441                                 yyerror("set-tos cannot be respecified");
1442                                 YYERROR;
1443                         }
1444                         scrub_opts.marker |= SOM_SETTOS;
1445                         scrub_opts.settos = $2;
1446                 }
1447                 | fragcache {
1448                         if (scrub_opts.marker & SOM_FRAGCACHE) {
1449                                 yyerror("fragcache cannot be respecified");
1450                                 YYERROR;
1451                         }
1452                         scrub_opts.marker |= SOM_FRAGCACHE;
1453                         scrub_opts.fragcache = $1;
1454                 }
1455                 | REASSEMBLE STRING {
1456                         if (strcasecmp($2, "tcp") != 0) {
1457                                 yyerror("scrub reassemble supports only tcp, "
1458                                     "not '%s'", $2);
1459                                 free($2);
1460                                 YYERROR;
1461                         }
1462                         free($2);
1463                         if (scrub_opts.reassemble_tcp) {
1464                                 yyerror("reassemble tcp cannot be respecified");
1465                                 YYERROR;
1466                         }
1467                         scrub_opts.reassemble_tcp = 1;
1468                 }
1469                 | RANDOMID {
1470                         if (scrub_opts.randomid) {
1471                                 yyerror("random-id cannot be respecified");
1472                                 YYERROR;
1473                         }
1474                         scrub_opts.randomid = 1;
1475                 }
1476                 | RTABLE NUMBER                         {
1477                         if ($2 < 0 || $2 > rt_tableid_max()) {
1478                                 yyerror("invalid rtable id");
1479                                 YYERROR;
1480                         }
1481                         scrub_opts.rtableid = $2;
1482                 }
1483                 | not TAGGED string                     {
1484                         scrub_opts.match_tag = $3;
1485                         scrub_opts.match_tag_not = $1;
1486                 }
1487                 ;
1488
1489 fragcache       : FRAGMENT REASSEMBLE   { $$ = 0; /* default */ }
1490                 | FRAGMENT FRAGCROP     { $$ = 0; }
1491                 | FRAGMENT FRAGDROP     { $$ = 0; }
1492                 ;
1493
1494 antispoof       : ANTISPOOF logquick antispoof_ifspc af antispoof_opts {
1495                         struct pfctl_rule        r;
1496                         struct node_host        *h = NULL, *hh;
1497                         struct node_if          *i, *j;
1498
1499                         if (check_rulestate(PFCTL_STATE_FILTER))
1500                                 YYERROR;
1501
1502                         for (i = $3; i; i = i->next) {
1503                                 bzero(&r, sizeof(r));
1504
1505                                 r.action = PF_DROP;
1506                                 r.direction = PF_IN;
1507                                 r.log = $2.log;
1508                                 r.logif = $2.logif;
1509                                 r.quick = $2.quick;
1510                                 r.af = $4;
1511                                 r.ridentifier = $5.ridentifier;
1512                                 if (rule_label(&r, $5.label))
1513                                         YYERROR;
1514                                 r.rtableid = $5.rtableid;
1515                                 j = calloc(1, sizeof(struct node_if));
1516                                 if (j == NULL)
1517                                         err(1, "antispoof: calloc");
1518                                 if (strlcpy(j->ifname, i->ifname,
1519                                     sizeof(j->ifname)) >= sizeof(j->ifname)) {
1520                                         free(j);
1521                                         yyerror("interface name too long");
1522                                         YYERROR;
1523                                 }
1524                                 j->not = 1;
1525                                 if (i->dynamic) {
1526                                         h = calloc(1, sizeof(*h));
1527                                         if (h == NULL)
1528                                                 err(1, "address: calloc");
1529                                         h->addr.type = PF_ADDR_DYNIFTL;
1530                                         set_ipmask(h, 128);
1531                                         if (strlcpy(h->addr.v.ifname, i->ifname,
1532                                             sizeof(h->addr.v.ifname)) >=
1533                                             sizeof(h->addr.v.ifname)) {
1534                                                 free(h);
1535                                                 yyerror(
1536                                                     "interface name too long");
1537                                                 YYERROR;
1538                                         }
1539                                         hh = malloc(sizeof(*hh));
1540                                         if (hh == NULL)
1541                                                  err(1, "address: malloc");
1542                                         bcopy(h, hh, sizeof(*hh));
1543                                         h->addr.iflags = PFI_AFLAG_NETWORK;
1544                                 } else {
1545                                         h = ifa_lookup(j->ifname,
1546                                             PFI_AFLAG_NETWORK);
1547                                         hh = NULL;
1548                                 }
1549
1550                                 if (h != NULL)
1551                                         expand_rule(&r, j, NULL, NULL, NULL, h,
1552                                             NULL, NULL, NULL, NULL, NULL,
1553                                             NULL, "");
1554
1555                                 if ((i->ifa_flags & IFF_LOOPBACK) == 0) {
1556                                         bzero(&r, sizeof(r));
1557
1558                                         r.action = PF_DROP;
1559                                         r.direction = PF_IN;
1560                                         r.log = $2.log;
1561                                         r.logif = $2.logif;
1562                                         r.quick = $2.quick;
1563                                         r.af = $4;
1564                                         r.ridentifier = $5.ridentifier;
1565                                         if (rule_label(&r, $5.label))
1566                                                 YYERROR;
1567                                         r.rtableid = $5.rtableid;
1568                                         if (hh != NULL)
1569                                                 h = hh;
1570                                         else
1571                                                 h = ifa_lookup(i->ifname, 0);
1572                                         if (h != NULL)
1573                                                 expand_rule(&r, NULL, NULL,
1574                                                     NULL, NULL, h, NULL, NULL,
1575                                                     NULL, NULL, NULL, NULL, "");
1576                                 } else
1577                                         free(hh);
1578                         }
1579                         for (int i = 0; i < PF_RULE_MAX_LABEL_COUNT; i++)
1580                                 free($5.label[i]);
1581                 }
1582                 ;
1583
1584 antispoof_ifspc : FOR antispoof_if                      { $$ = $2; }
1585                 | FOR '{' optnl antispoof_iflst '}'     { $$ = $4; }
1586                 ;
1587
1588 antispoof_iflst : antispoof_if optnl                    { $$ = $1; }
1589                 | antispoof_iflst comma antispoof_if optnl {
1590                         $1->tail->next = $3;
1591                         $1->tail = $3;
1592                         $$ = $1;
1593                 }
1594                 ;
1595
1596 antispoof_if    : if_item                               { $$ = $1; }
1597                 | '(' if_item ')'                       {
1598                         $2->dynamic = 1;
1599                         $$ = $2;
1600                 }
1601                 ;
1602
1603 antispoof_opts  :       {
1604                                 bzero(&antispoof_opts, sizeof antispoof_opts);
1605                                 antispoof_opts.rtableid = -1;
1606                         }
1607                     antispoof_opts_l
1608                         { $$ = antispoof_opts; }
1609                 | /* empty */   {
1610                         bzero(&antispoof_opts, sizeof antispoof_opts);
1611                         antispoof_opts.rtableid = -1;
1612                         $$ = antispoof_opts;
1613                 }
1614                 ;
1615
1616 antispoof_opts_l        : antispoof_opts_l antispoof_opt
1617                         | antispoof_opt
1618                         ;
1619
1620 antispoof_opt   : label {
1621                         if (antispoof_opts.labelcount >= PF_RULE_MAX_LABEL_COUNT) {
1622                                 yyerror("label can only be used %d times", PF_RULE_MAX_LABEL_COUNT);
1623                                 YYERROR;
1624                         }
1625                         antispoof_opts.label[antispoof_opts.labelcount++] = $1;
1626                 }
1627                 | RIDENTIFIER number {
1628                         antispoof_opts.ridentifier = $2;
1629                 }
1630                 | RTABLE NUMBER                         {
1631                         if ($2 < 0 || $2 > rt_tableid_max()) {
1632                                 yyerror("invalid rtable id");
1633                                 YYERROR;
1634                         }
1635                         antispoof_opts.rtableid = $2;
1636                 }
1637                 ;
1638
1639 not             : '!'           { $$ = 1; }
1640                 | /* empty */   { $$ = 0; }
1641                 ;
1642
1643 tabledef        : TABLE '<' STRING '>' table_opts {
1644                         struct node_host         *h, *nh;
1645                         struct node_tinit        *ti, *nti;
1646
1647                         if (strlen($3) >= PF_TABLE_NAME_SIZE) {
1648                                 yyerror("table name too long, max %d chars",
1649                                     PF_TABLE_NAME_SIZE - 1);
1650                                 free($3);
1651                                 YYERROR;
1652                         }
1653                         if (pf->loadopt & PFCTL_FLAG_TABLE)
1654                                 if (process_tabledef($3, &$5)) {
1655                                         free($3);
1656                                         YYERROR;
1657                                 }
1658                         free($3);
1659                         for (ti = SIMPLEQ_FIRST(&$5.init_nodes);
1660                             ti != SIMPLEQ_END(&$5.init_nodes); ti = nti) {
1661                                 if (ti->file)
1662                                         free(ti->file);
1663                                 for (h = ti->host; h != NULL; h = nh) {
1664                                         nh = h->next;
1665                                         free(h);
1666                                 }
1667                                 nti = SIMPLEQ_NEXT(ti, entries);
1668                                 free(ti);
1669                         }
1670                 }
1671                 ;
1672
1673 table_opts      :       {
1674                         bzero(&table_opts, sizeof table_opts);
1675                         SIMPLEQ_INIT(&table_opts.init_nodes);
1676                 }
1677                     table_opts_l
1678                         { $$ = table_opts; }
1679                 | /* empty */
1680                         {
1681                         bzero(&table_opts, sizeof table_opts);
1682                         SIMPLEQ_INIT(&table_opts.init_nodes);
1683                         $$ = table_opts;
1684                 }
1685                 ;
1686
1687 table_opts_l    : table_opts_l table_opt
1688                 | table_opt
1689                 ;
1690
1691 table_opt       : STRING                {
1692                         if (!strcmp($1, "const"))
1693                                 table_opts.flags |= PFR_TFLAG_CONST;
1694                         else if (!strcmp($1, "persist"))
1695                                 table_opts.flags |= PFR_TFLAG_PERSIST;
1696                         else if (!strcmp($1, "counters"))
1697                                 table_opts.flags |= PFR_TFLAG_COUNTERS;
1698                         else {
1699                                 yyerror("invalid table option '%s'", $1);
1700                                 free($1);
1701                                 YYERROR;
1702                         }
1703                         free($1);
1704                 }
1705                 | '{' optnl '}'         { table_opts.init_addr = 1; }
1706                 | '{' optnl host_list '}'       {
1707                         struct node_host        *n;
1708                         struct node_tinit       *ti;
1709
1710                         for (n = $3; n != NULL; n = n->next) {
1711                                 switch (n->addr.type) {
1712                                 case PF_ADDR_ADDRMASK:
1713                                         continue; /* ok */
1714                                 case PF_ADDR_RANGE:
1715                                         yyerror("address ranges are not "
1716                                             "permitted inside tables");
1717                                         break;
1718                                 case PF_ADDR_DYNIFTL:
1719                                         yyerror("dynamic addresses are not "
1720                                             "permitted inside tables");
1721                                         break;
1722                                 case PF_ADDR_TABLE:
1723                                         yyerror("tables cannot contain tables");
1724                                         break;
1725                                 case PF_ADDR_NOROUTE:
1726                                         yyerror("\"no-route\" is not permitted "
1727                                             "inside tables");
1728                                         break;
1729                                 case PF_ADDR_URPFFAILED:
1730                                         yyerror("\"urpf-failed\" is not "
1731                                             "permitted inside tables");
1732                                         break;
1733                                 default:
1734                                         yyerror("unknown address type %d",
1735                                             n->addr.type);
1736                                 }
1737                                 YYERROR;
1738                         }
1739                         if (!(ti = calloc(1, sizeof(*ti))))
1740                                 err(1, "table_opt: calloc");
1741                         ti->host = $3;
1742                         SIMPLEQ_INSERT_TAIL(&table_opts.init_nodes, ti,
1743                             entries);
1744                         table_opts.init_addr = 1;
1745                 }
1746                 | FILENAME STRING       {
1747                         struct node_tinit       *ti;
1748
1749                         if (!(ti = calloc(1, sizeof(*ti))))
1750                                 err(1, "table_opt: calloc");
1751                         ti->file = $2;
1752                         SIMPLEQ_INSERT_TAIL(&table_opts.init_nodes, ti,
1753                             entries);
1754                         table_opts.init_addr = 1;
1755                 }
1756                 ;
1757
1758 altqif          : ALTQ interface queue_opts QUEUE qassign {
1759                         struct pf_altq  a;
1760
1761                         if (check_rulestate(PFCTL_STATE_QUEUE))
1762                                 YYERROR;
1763
1764                         memset(&a, 0, sizeof(a));
1765                         if ($3.scheduler.qtype == ALTQT_NONE) {
1766                                 yyerror("no scheduler specified!");
1767                                 YYERROR;
1768                         }
1769                         a.scheduler = $3.scheduler.qtype;
1770                         a.qlimit = $3.qlimit;
1771                         a.tbrsize = $3.tbrsize;
1772                         if ($5 == NULL && $3.scheduler.qtype != ALTQT_CODEL) {
1773                                 yyerror("no child queues specified");
1774                                 YYERROR;
1775                         }
1776                         if (expand_altq(&a, $2, $5, $3.queue_bwspec,
1777                             &$3.scheduler))
1778                                 YYERROR;
1779                 }
1780                 ;
1781
1782 queuespec       : QUEUE STRING interface queue_opts qassign {
1783                         struct pf_altq  a;
1784
1785                         if (check_rulestate(PFCTL_STATE_QUEUE)) {
1786                                 free($2);
1787                                 YYERROR;
1788                         }
1789
1790                         memset(&a, 0, sizeof(a));
1791
1792                         if (strlcpy(a.qname, $2, sizeof(a.qname)) >=
1793                             sizeof(a.qname)) {
1794                                 yyerror("queue name too long (max "
1795                                     "%d chars)", PF_QNAME_SIZE-1);
1796                                 free($2);
1797                                 YYERROR;
1798                         }
1799                         free($2);
1800                         if ($4.tbrsize) {
1801                                 yyerror("cannot specify tbrsize for queue");
1802                                 YYERROR;
1803                         }
1804                         if ($4.priority > 255) {
1805                                 yyerror("priority out of range: max 255");
1806                                 YYERROR;
1807                         }
1808                         a.priority = $4.priority;
1809                         a.qlimit = $4.qlimit;
1810                         a.scheduler = $4.scheduler.qtype;
1811                         if (expand_queue(&a, $3, $5, $4.queue_bwspec,
1812                             &$4.scheduler)) {
1813                                 yyerror("errors in queue definition");
1814                                 YYERROR;
1815                         }
1816                 }
1817                 ;
1818
1819 queue_opts      :       {
1820                         bzero(&queue_opts, sizeof queue_opts);
1821                         queue_opts.priority = DEFAULT_PRIORITY;
1822                         queue_opts.qlimit = DEFAULT_QLIMIT;
1823                         queue_opts.scheduler.qtype = ALTQT_NONE;
1824                         queue_opts.queue_bwspec.bw_percent = 100;
1825                 }
1826                     queue_opts_l
1827                         { $$ = queue_opts; }
1828                 | /* empty */ {
1829                         bzero(&queue_opts, sizeof queue_opts);
1830                         queue_opts.priority = DEFAULT_PRIORITY;
1831                         queue_opts.qlimit = DEFAULT_QLIMIT;
1832                         queue_opts.scheduler.qtype = ALTQT_NONE;
1833                         queue_opts.queue_bwspec.bw_percent = 100;
1834                         $$ = queue_opts;
1835                 }
1836                 ;
1837
1838 queue_opts_l    : queue_opts_l queue_opt
1839                 | queue_opt
1840                 ;
1841
1842 queue_opt       : BANDWIDTH bandwidth   {
1843                         if (queue_opts.marker & QOM_BWSPEC) {
1844                                 yyerror("bandwidth cannot be respecified");
1845                                 YYERROR;
1846                         }
1847                         queue_opts.marker |= QOM_BWSPEC;
1848                         queue_opts.queue_bwspec = $2;
1849                 }
1850                 | PRIORITY NUMBER       {
1851                         if (queue_opts.marker & QOM_PRIORITY) {
1852                                 yyerror("priority cannot be respecified");
1853                                 YYERROR;
1854                         }
1855                         if ($2 < 0 || $2 > 255) {
1856                                 yyerror("priority out of range: max 255");
1857                                 YYERROR;
1858                         }
1859                         queue_opts.marker |= QOM_PRIORITY;
1860                         queue_opts.priority = $2;
1861                 }
1862                 | QLIMIT NUMBER {
1863                         if (queue_opts.marker & QOM_QLIMIT) {
1864                                 yyerror("qlimit cannot be respecified");
1865                                 YYERROR;
1866                         }
1867                         if ($2 < 0 || $2 > 65535) {
1868                                 yyerror("qlimit out of range: max 65535");
1869                                 YYERROR;
1870                         }
1871                         queue_opts.marker |= QOM_QLIMIT;
1872                         queue_opts.qlimit = $2;
1873                 }
1874                 | scheduler     {
1875                         if (queue_opts.marker & QOM_SCHEDULER) {
1876                                 yyerror("scheduler cannot be respecified");
1877                                 YYERROR;
1878                         }
1879                         queue_opts.marker |= QOM_SCHEDULER;
1880                         queue_opts.scheduler = $1;
1881                 }
1882                 | TBRSIZE NUMBER        {
1883                         if (queue_opts.marker & QOM_TBRSIZE) {
1884                                 yyerror("tbrsize cannot be respecified");
1885                                 YYERROR;
1886                         }
1887                         if ($2 < 0 || $2 > UINT_MAX) {
1888                                 yyerror("tbrsize too big: max %u", UINT_MAX);
1889                                 YYERROR;
1890                         }
1891                         queue_opts.marker |= QOM_TBRSIZE;
1892                         queue_opts.tbrsize = $2;
1893                 }
1894                 ;
1895
1896 bandwidth       : STRING {
1897                         double   bps;
1898                         char    *cp;
1899
1900                         $$.bw_percent = 0;
1901
1902                         bps = strtod($1, &cp);
1903                         if (cp != NULL) {
1904                                 if (strlen(cp) > 1) {
1905                                         char *cu = cp + 1;
1906                                         if (!strcmp(cu, "Bit") ||
1907                                             !strcmp(cu, "B") ||
1908                                             !strcmp(cu, "bit") ||
1909                                             !strcmp(cu, "b")) {
1910                                                 *cu = 0;
1911                                         }
1912                                 }
1913                                 if (!strcmp(cp, "b"))
1914                                         ; /* nothing */
1915                                 else if (!strcmp(cp, "K"))
1916                                         bps *= 1000;
1917                                 else if (!strcmp(cp, "M"))
1918                                         bps *= 1000 * 1000;
1919                                 else if (!strcmp(cp, "G"))
1920                                         bps *= 1000 * 1000 * 1000;
1921                                 else if (!strcmp(cp, "%")) {
1922                                         if (bps < 0 || bps > 100) {
1923                                                 yyerror("bandwidth spec "
1924                                                     "out of range");
1925                                                 free($1);
1926                                                 YYERROR;
1927                                         }
1928                                         $$.bw_percent = bps;
1929                                         bps = 0;
1930                                 } else {
1931                                         yyerror("unknown unit %s", cp);
1932                                         free($1);
1933                                         YYERROR;
1934                                 }
1935                         }
1936                         free($1);
1937                         $$.bw_absolute = (u_int64_t)bps;
1938                 }
1939                 | NUMBER {
1940                         if ($1 < 0 || $1 >= LLONG_MAX) {
1941                                 yyerror("bandwidth number too big");
1942                                 YYERROR;
1943                         }
1944                         $$.bw_percent = 0;
1945                         $$.bw_absolute = $1;
1946                 }
1947                 ;
1948
1949 scheduler       : CBQ                           {
1950                         $$.qtype = ALTQT_CBQ;
1951                         $$.data.cbq_opts.flags = 0;
1952                 }
1953                 | CBQ '(' cbqflags_list ')'     {
1954                         $$.qtype = ALTQT_CBQ;
1955                         $$.data.cbq_opts.flags = $3;
1956                 }
1957                 | PRIQ                          {
1958                         $$.qtype = ALTQT_PRIQ;
1959                         $$.data.priq_opts.flags = 0;
1960                 }
1961                 | PRIQ '(' priqflags_list ')'   {
1962                         $$.qtype = ALTQT_PRIQ;
1963                         $$.data.priq_opts.flags = $3;
1964                 }
1965                 | HFSC                          {
1966                         $$.qtype = ALTQT_HFSC;
1967                         bzero(&$$.data.hfsc_opts,
1968                             sizeof(struct node_hfsc_opts));
1969                 }
1970                 | HFSC '(' hfsc_opts ')'        {
1971                         $$.qtype = ALTQT_HFSC;
1972                         $$.data.hfsc_opts = $3;
1973                 }
1974                 | FAIRQ                         {
1975                         $$.qtype = ALTQT_FAIRQ;
1976                         bzero(&$$.data.fairq_opts,
1977                                 sizeof(struct node_fairq_opts));
1978                 }
1979                 | FAIRQ '(' fairq_opts ')'      {
1980                         $$.qtype = ALTQT_FAIRQ;
1981                         $$.data.fairq_opts = $3;
1982                 }
1983                 | CODEL                         {
1984                         $$.qtype = ALTQT_CODEL;
1985                         bzero(&$$.data.codel_opts,
1986                                 sizeof(struct codel_opts));
1987                 }
1988                 | CODEL '(' codel_opts ')'      {
1989                         $$.qtype = ALTQT_CODEL;
1990                         $$.data.codel_opts = $3;
1991                 }
1992                 ;
1993
1994 cbqflags_list   : cbqflags_item                         { $$ |= $1; }
1995                 | cbqflags_list comma cbqflags_item     { $$ |= $3; }
1996                 ;
1997
1998 cbqflags_item   : STRING        {
1999                         if (!strcmp($1, "default"))
2000                                 $$ = CBQCLF_DEFCLASS;
2001                         else if (!strcmp($1, "borrow"))
2002                                 $$ = CBQCLF_BORROW;
2003                         else if (!strcmp($1, "red"))
2004                                 $$ = CBQCLF_RED;
2005                         else if (!strcmp($1, "ecn"))
2006                                 $$ = CBQCLF_RED|CBQCLF_ECN;
2007                         else if (!strcmp($1, "rio"))
2008                                 $$ = CBQCLF_RIO;
2009                         else if (!strcmp($1, "codel"))
2010                                 $$ = CBQCLF_CODEL;
2011                         else {
2012                                 yyerror("unknown cbq flag \"%s\"", $1);
2013                                 free($1);
2014                                 YYERROR;
2015                         }
2016                         free($1);
2017                 }
2018                 ;
2019
2020 priqflags_list  : priqflags_item                        { $$ |= $1; }
2021                 | priqflags_list comma priqflags_item   { $$ |= $3; }
2022                 ;
2023
2024 priqflags_item  : STRING        {
2025                         if (!strcmp($1, "default"))
2026                                 $$ = PRCF_DEFAULTCLASS;
2027                         else if (!strcmp($1, "red"))
2028                                 $$ = PRCF_RED;
2029                         else if (!strcmp($1, "ecn"))
2030                                 $$ = PRCF_RED|PRCF_ECN;
2031                         else if (!strcmp($1, "rio"))
2032                                 $$ = PRCF_RIO;
2033                         else if (!strcmp($1, "codel"))
2034                                 $$ = PRCF_CODEL;
2035                         else {
2036                                 yyerror("unknown priq flag \"%s\"", $1);
2037                                 free($1);
2038                                 YYERROR;
2039                         }
2040                         free($1);
2041                 }
2042                 ;
2043
2044 hfsc_opts       :       {
2045                                 bzero(&hfsc_opts,
2046                                     sizeof(struct node_hfsc_opts));
2047                         }
2048                     hfscopts_list                               {
2049                         $$ = hfsc_opts;
2050                 }
2051                 ;
2052
2053 hfscopts_list   : hfscopts_item
2054                 | hfscopts_list comma hfscopts_item
2055                 ;
2056
2057 hfscopts_item   : LINKSHARE bandwidth                           {
2058                         if (hfsc_opts.linkshare.used) {
2059                                 yyerror("linkshare already specified");
2060                                 YYERROR;
2061                         }
2062                         hfsc_opts.linkshare.m2 = $2;
2063                         hfsc_opts.linkshare.used = 1;
2064                 }
2065                 | LINKSHARE '(' bandwidth comma NUMBER comma bandwidth ')'
2066                     {
2067                         if ($5 < 0 || $5 > INT_MAX) {
2068                                 yyerror("timing in curve out of range");
2069                                 YYERROR;
2070                         }
2071                         if (hfsc_opts.linkshare.used) {
2072                                 yyerror("linkshare already specified");
2073                                 YYERROR;
2074                         }
2075                         hfsc_opts.linkshare.m1 = $3;
2076                         hfsc_opts.linkshare.d = $5;
2077                         hfsc_opts.linkshare.m2 = $7;
2078                         hfsc_opts.linkshare.used = 1;
2079                 }
2080                 | REALTIME bandwidth                            {
2081                         if (hfsc_opts.realtime.used) {
2082                                 yyerror("realtime already specified");
2083                                 YYERROR;
2084                         }
2085                         hfsc_opts.realtime.m2 = $2;
2086                         hfsc_opts.realtime.used = 1;
2087                 }
2088                 | REALTIME '(' bandwidth comma NUMBER comma bandwidth ')'
2089                     {
2090                         if ($5 < 0 || $5 > INT_MAX) {
2091                                 yyerror("timing in curve out of range");
2092                                 YYERROR;
2093                         }
2094                         if (hfsc_opts.realtime.used) {
2095                                 yyerror("realtime already specified");
2096                                 YYERROR;
2097                         }
2098                         hfsc_opts.realtime.m1 = $3;
2099                         hfsc_opts.realtime.d = $5;
2100                         hfsc_opts.realtime.m2 = $7;
2101                         hfsc_opts.realtime.used = 1;
2102                 }
2103                 | UPPERLIMIT bandwidth                          {
2104                         if (hfsc_opts.upperlimit.used) {
2105                                 yyerror("upperlimit already specified");
2106                                 YYERROR;
2107                         }
2108                         hfsc_opts.upperlimit.m2 = $2;
2109                         hfsc_opts.upperlimit.used = 1;
2110                 }
2111                 | UPPERLIMIT '(' bandwidth comma NUMBER comma bandwidth ')'
2112                     {
2113                         if ($5 < 0 || $5 > INT_MAX) {
2114                                 yyerror("timing in curve out of range");
2115                                 YYERROR;
2116                         }
2117                         if (hfsc_opts.upperlimit.used) {
2118                                 yyerror("upperlimit already specified");
2119                                 YYERROR;
2120                         }
2121                         hfsc_opts.upperlimit.m1 = $3;
2122                         hfsc_opts.upperlimit.d = $5;
2123                         hfsc_opts.upperlimit.m2 = $7;
2124                         hfsc_opts.upperlimit.used = 1;
2125                 }
2126                 | STRING        {
2127                         if (!strcmp($1, "default"))
2128                                 hfsc_opts.flags |= HFCF_DEFAULTCLASS;
2129                         else if (!strcmp($1, "red"))
2130                                 hfsc_opts.flags |= HFCF_RED;
2131                         else if (!strcmp($1, "ecn"))
2132                                 hfsc_opts.flags |= HFCF_RED|HFCF_ECN;
2133                         else if (!strcmp($1, "rio"))
2134                                 hfsc_opts.flags |= HFCF_RIO;
2135                         else if (!strcmp($1, "codel"))
2136                                 hfsc_opts.flags |= HFCF_CODEL;
2137                         else {
2138                                 yyerror("unknown hfsc flag \"%s\"", $1);
2139                                 free($1);
2140                                 YYERROR;
2141                         }
2142                         free($1);
2143                 }
2144                 ;
2145
2146 fairq_opts      :       {
2147                                 bzero(&fairq_opts,
2148                                     sizeof(struct node_fairq_opts));
2149                         }
2150                     fairqopts_list                              {
2151                         $$ = fairq_opts;
2152                 }
2153                 ;
2154
2155 fairqopts_list  : fairqopts_item
2156                 | fairqopts_list comma fairqopts_item
2157                 ;
2158
2159 fairqopts_item  : LINKSHARE bandwidth                           {
2160                         if (fairq_opts.linkshare.used) {
2161                                 yyerror("linkshare already specified");
2162                                 YYERROR;
2163                         }
2164                         fairq_opts.linkshare.m2 = $2;
2165                         fairq_opts.linkshare.used = 1;
2166                 }
2167                 | LINKSHARE '(' bandwidth number bandwidth ')'  {
2168                         if (fairq_opts.linkshare.used) {
2169                                 yyerror("linkshare already specified");
2170                                 YYERROR;
2171                         }
2172                         fairq_opts.linkshare.m1 = $3;
2173                         fairq_opts.linkshare.d = $4;
2174                         fairq_opts.linkshare.m2 = $5;
2175                         fairq_opts.linkshare.used = 1;
2176                 }
2177                 | HOGS bandwidth {
2178                         fairq_opts.hogs_bw = $2;
2179                 }
2180                 | BUCKETS number {
2181                         fairq_opts.nbuckets = $2;
2182                 }
2183                 | STRING        {
2184                         if (!strcmp($1, "default"))
2185                                 fairq_opts.flags |= FARF_DEFAULTCLASS;
2186                         else if (!strcmp($1, "red"))
2187                                 fairq_opts.flags |= FARF_RED;
2188                         else if (!strcmp($1, "ecn"))
2189                                 fairq_opts.flags |= FARF_RED|FARF_ECN;
2190                         else if (!strcmp($1, "rio"))
2191                                 fairq_opts.flags |= FARF_RIO;
2192                         else if (!strcmp($1, "codel"))
2193                                 fairq_opts.flags |= FARF_CODEL;
2194                         else {
2195                                 yyerror("unknown fairq flag \"%s\"", $1);
2196                                 free($1);
2197                                 YYERROR;
2198                         }
2199                         free($1);
2200                 }
2201                 ;
2202
2203 codel_opts      :       {
2204                                 bzero(&codel_opts,
2205                                     sizeof(struct codel_opts));
2206                         }
2207                     codelopts_list                              {
2208                         $$ = codel_opts;
2209                 }
2210                 ;
2211
2212 codelopts_list  : codelopts_item
2213                 | codelopts_list comma codelopts_item
2214                 ;
2215
2216 codelopts_item  : INTERVAL number                               {
2217                         if (codel_opts.interval) {
2218                                 yyerror("interval already specified");
2219                                 YYERROR;
2220                         }
2221                         codel_opts.interval = $2;
2222                 }
2223                 | TARGET number                                 {
2224                         if (codel_opts.target) {
2225                                 yyerror("target already specified");
2226                                 YYERROR;
2227                         }
2228                         codel_opts.target = $2;
2229                 }
2230                 | STRING                                        {
2231                         if (!strcmp($1, "ecn"))
2232                                 codel_opts.ecn = 1;
2233                         else {
2234                                 yyerror("unknown codel option \"%s\"", $1);
2235                                 free($1);
2236                                 YYERROR;
2237                         }
2238                         free($1);
2239                 }
2240                 ;
2241
2242 qassign         : /* empty */           { $$ = NULL; }
2243                 | qassign_item          { $$ = $1; }
2244                 | '{' optnl qassign_list '}'    { $$ = $3; }
2245                 ;
2246
2247 qassign_list    : qassign_item optnl            { $$ = $1; }
2248                 | qassign_list comma qassign_item optnl {
2249                         $1->tail->next = $3;
2250                         $1->tail = $3;
2251                         $$ = $1;
2252                 }
2253                 ;
2254
2255 qassign_item    : STRING                        {
2256                         $$ = calloc(1, sizeof(struct node_queue));
2257                         if ($$ == NULL)
2258                                 err(1, "qassign_item: calloc");
2259                         if (strlcpy($$->queue, $1, sizeof($$->queue)) >=
2260                             sizeof($$->queue)) {
2261                                 yyerror("queue name '%s' too long (max "
2262                                     "%d chars)", $1, sizeof($$->queue)-1);
2263                                 free($1);
2264                                 free($$);
2265                                 YYERROR;
2266                         }
2267                         free($1);
2268                         $$->next = NULL;
2269                         $$->tail = $$;
2270                 }
2271                 ;
2272
2273 pfrule          : action dir logquick interface route af proto fromto
2274                     filter_opts
2275                 {
2276                         struct pfctl_rule        r;
2277                         struct node_state_opt   *o;
2278                         struct node_proto       *proto;
2279                         int                      srctrack = 0;
2280                         int                      statelock = 0;
2281                         int                      adaptive = 0;
2282                         int                      defaults = 0;
2283
2284                         if (check_rulestate(PFCTL_STATE_FILTER))
2285                                 YYERROR;
2286
2287                         memset(&r, 0, sizeof(r));
2288
2289                         r.action = $1.b1;
2290                         switch ($1.b2) {
2291                         case PFRULE_RETURNRST:
2292                                 r.rule_flag |= PFRULE_RETURNRST;
2293                                 r.return_ttl = $1.w;
2294                                 break;
2295                         case PFRULE_RETURNICMP:
2296                                 r.rule_flag |= PFRULE_RETURNICMP;
2297                                 r.return_icmp = $1.w;
2298                                 r.return_icmp6 = $1.w2;
2299                                 break;
2300                         case PFRULE_RETURN:
2301                                 r.rule_flag |= PFRULE_RETURN;
2302                                 r.return_icmp = $1.w;
2303                                 r.return_icmp6 = $1.w2;
2304                                 break;
2305                         }
2306                         r.direction = $2;
2307                         r.log = $3.log;
2308                         r.logif = $3.logif;
2309                         r.quick = $3.quick;
2310                         r.prob = $9.prob;
2311                         r.rtableid = $9.rtableid;
2312
2313                         if ($9.marker & FOM_PRIO) {
2314                                 if ($9.prio == 0)
2315                                         r.prio = PF_PRIO_ZERO;
2316                                 else
2317                                         r.prio = $9.prio;
2318                         }
2319                         if ($9.marker & FOM_SETPRIO) {
2320                                 r.set_prio[0] = $9.set_prio[0];
2321                                 r.set_prio[1] = $9.set_prio[1];
2322                                 r.scrub_flags |= PFSTATE_SETPRIO;
2323                         }
2324
2325                         r.af = $6;
2326                         if ($9.tag)
2327                                 if (strlcpy(r.tagname, $9.tag,
2328                                     PF_TAG_NAME_SIZE) >= PF_TAG_NAME_SIZE) {
2329                                         yyerror("tag too long, max %u chars",
2330                                             PF_TAG_NAME_SIZE - 1);
2331                                         YYERROR;
2332                                 }
2333                         if ($9.match_tag)
2334                                 if (strlcpy(r.match_tagname, $9.match_tag,
2335                                     PF_TAG_NAME_SIZE) >= PF_TAG_NAME_SIZE) {
2336                                         yyerror("tag too long, max %u chars",
2337                                             PF_TAG_NAME_SIZE - 1);
2338                                         YYERROR;
2339                                 }
2340                         r.match_tag_not = $9.match_tag_not;
2341                         if (rule_label(&r, $9.label))
2342                                 YYERROR;
2343                         for (int i = 0; i < PF_RULE_MAX_LABEL_COUNT; i++)
2344                                 free($9.label[i]);
2345                         r.ridentifier = $9.ridentifier;
2346                         r.flags = $9.flags.b1;
2347                         r.flagset = $9.flags.b2;
2348                         if (($9.flags.b1 & $9.flags.b2) != $9.flags.b1) {
2349                                 yyerror("flags always false");
2350                                 YYERROR;
2351                         }
2352                         if ($9.flags.b1 || $9.flags.b2 || $8.src_os) {
2353                                 for (proto = $7; proto != NULL &&
2354                                     proto->proto != IPPROTO_TCP;
2355                                     proto = proto->next)
2356                                         ;       /* nothing */
2357                                 if (proto == NULL && $7 != NULL) {
2358                                         if ($9.flags.b1 || $9.flags.b2)
2359                                                 yyerror(
2360                                                     "flags only apply to tcp");
2361                                         if ($8.src_os)
2362                                                 yyerror(
2363                                                     "OS fingerprinting only "
2364                                                     "apply to tcp");
2365                                         YYERROR;
2366                                 }
2367 #if 0
2368                                 if (($9.flags.b1 & parse_flags("S")) == 0 &&
2369                                     $8.src_os) {
2370                                         yyerror("OS fingerprinting requires "
2371                                             "the SYN TCP flag (flags S/SA)");
2372                                         YYERROR;
2373                                 }
2374 #endif
2375                         }
2376
2377                         r.tos = $9.tos;
2378                         r.keep_state = $9.keep.action;
2379                         o = $9.keep.options;
2380
2381                         /* 'keep state' by default on pass rules. */
2382                         if (!r.keep_state && !r.action &&
2383                             !($9.marker & FOM_KEEP)) {
2384                                 r.keep_state = PF_STATE_NORMAL;
2385                                 o = keep_state_defaults;
2386                                 defaults = 1;
2387                         }
2388
2389                         while (o) {
2390                                 struct node_state_opt   *p = o;
2391
2392                                 switch (o->type) {
2393                                 case PF_STATE_OPT_MAX:
2394                                         if (r.max_states) {
2395                                                 yyerror("state option 'max' "
2396                                                     "multiple definitions");
2397                                                 YYERROR;
2398                                         }
2399                                         r.max_states = o->data.max_states;
2400                                         break;
2401                                 case PF_STATE_OPT_NOSYNC:
2402                                         if (r.rule_flag & PFRULE_NOSYNC) {
2403                                                 yyerror("state option 'sync' "
2404                                                     "multiple definitions");
2405                                                 YYERROR;
2406                                         }
2407                                         r.rule_flag |= PFRULE_NOSYNC;
2408                                         break;
2409                                 case PF_STATE_OPT_SRCTRACK:
2410                                         if (srctrack) {
2411                                                 yyerror("state option "
2412                                                     "'source-track' "
2413                                                     "multiple definitions");
2414                                                 YYERROR;
2415                                         }
2416                                         srctrack =  o->data.src_track;
2417                                         r.rule_flag |= PFRULE_SRCTRACK;
2418                                         break;
2419                                 case PF_STATE_OPT_MAX_SRC_STATES:
2420                                         if (r.max_src_states) {
2421                                                 yyerror("state option "
2422                                                     "'max-src-states' "
2423                                                     "multiple definitions");
2424                                                 YYERROR;
2425                                         }
2426                                         if (o->data.max_src_states == 0) {
2427                                                 yyerror("'max-src-states' must "
2428                                                     "be > 0");
2429                                                 YYERROR;
2430                                         }
2431                                         r.max_src_states =
2432                                             o->data.max_src_states;
2433                                         r.rule_flag |= PFRULE_SRCTRACK;
2434                                         break;
2435                                 case PF_STATE_OPT_OVERLOAD:
2436                                         if (r.overload_tblname[0]) {
2437                                                 yyerror("multiple 'overload' "
2438                                                     "table definitions");
2439                                                 YYERROR;
2440                                         }
2441                                         if (strlcpy(r.overload_tblname,
2442                                             o->data.overload.tblname,
2443                                             PF_TABLE_NAME_SIZE) >=
2444                                             PF_TABLE_NAME_SIZE) {
2445                                                 yyerror("state option: "
2446                                                     "strlcpy");
2447                                                 YYERROR;
2448                                         }
2449                                         r.flush = o->data.overload.flush;
2450                                         break;
2451                                 case PF_STATE_OPT_MAX_SRC_CONN:
2452                                         if (r.max_src_conn) {
2453                                                 yyerror("state option "
2454                                                     "'max-src-conn' "
2455                                                     "multiple definitions");
2456                                                 YYERROR;
2457                                         }
2458                                         if (o->data.max_src_conn == 0) {
2459                                                 yyerror("'max-src-conn' "
2460                                                     "must be > 0");
2461                                                 YYERROR;
2462                                         }
2463                                         r.max_src_conn =
2464                                             o->data.max_src_conn;
2465                                         r.rule_flag |= PFRULE_SRCTRACK |
2466                                             PFRULE_RULESRCTRACK;
2467                                         break;
2468                                 case PF_STATE_OPT_MAX_SRC_CONN_RATE:
2469                                         if (r.max_src_conn_rate.limit) {
2470                                                 yyerror("state option "
2471                                                     "'max-src-conn-rate' "
2472                                                     "multiple definitions");
2473                                                 YYERROR;
2474                                         }
2475                                         if (!o->data.max_src_conn_rate.limit ||
2476                                             !o->data.max_src_conn_rate.seconds) {
2477                                                 yyerror("'max-src-conn-rate' "
2478                                                     "values must be > 0");
2479                                                 YYERROR;
2480                                         }
2481                                         if (o->data.max_src_conn_rate.limit >
2482                                             PF_THRESHOLD_MAX) {
2483                                                 yyerror("'max-src-conn-rate' "
2484                                                     "maximum rate must be < %u",
2485                                                     PF_THRESHOLD_MAX);
2486                                                 YYERROR;
2487                                         }
2488                                         r.max_src_conn_rate.limit =
2489                                             o->data.max_src_conn_rate.limit;
2490                                         r.max_src_conn_rate.seconds =
2491                                             o->data.max_src_conn_rate.seconds;
2492                                         r.rule_flag |= PFRULE_SRCTRACK |
2493                                             PFRULE_RULESRCTRACK;
2494                                         break;
2495                                 case PF_STATE_OPT_MAX_SRC_NODES:
2496                                         if (r.max_src_nodes) {
2497                                                 yyerror("state option "
2498                                                     "'max-src-nodes' "
2499                                                     "multiple definitions");
2500                                                 YYERROR;
2501                                         }
2502                                         if (o->data.max_src_nodes == 0) {
2503                                                 yyerror("'max-src-nodes' must "
2504                                                     "be > 0");
2505                                                 YYERROR;
2506                                         }
2507                                         r.max_src_nodes =
2508                                             o->data.max_src_nodes;
2509                                         r.rule_flag |= PFRULE_SRCTRACK |
2510                                             PFRULE_RULESRCTRACK;
2511                                         break;
2512                                 case PF_STATE_OPT_STATELOCK:
2513                                         if (statelock) {
2514                                                 yyerror("state locking option: "
2515                                                     "multiple definitions");
2516                                                 YYERROR;
2517                                         }
2518                                         statelock = 1;
2519                                         r.rule_flag |= o->data.statelock;
2520                                         break;
2521                                 case PF_STATE_OPT_SLOPPY:
2522                                         if (r.rule_flag & PFRULE_STATESLOPPY) {
2523                                                 yyerror("state sloppy option: "
2524                                                     "multiple definitions");
2525                                                 YYERROR;
2526                                         }
2527                                         r.rule_flag |= PFRULE_STATESLOPPY;
2528                                         break;
2529                                 case PF_STATE_OPT_TIMEOUT:
2530                                         if (o->data.timeout.number ==
2531                                             PFTM_ADAPTIVE_START ||
2532                                             o->data.timeout.number ==
2533                                             PFTM_ADAPTIVE_END)
2534                                                 adaptive = 1;
2535                                         if (r.timeout[o->data.timeout.number]) {
2536                                                 yyerror("state timeout %s "
2537                                                     "multiple definitions",
2538                                                     pf_timeouts[o->data.
2539                                                     timeout.number].name);
2540                                                 YYERROR;
2541                                         }
2542                                         r.timeout[o->data.timeout.number] =
2543                                             o->data.timeout.seconds;
2544                                 }
2545                                 o = o->next;
2546                                 if (!defaults)
2547                                         free(p);
2548                         }
2549
2550                         /* 'flags S/SA' by default on stateful rules */
2551                         if (!r.action && !r.flags && !r.flagset &&
2552                             !$9.fragment && !($9.marker & FOM_FLAGS) &&
2553                             r.keep_state) {
2554                                 r.flags = parse_flags("S");
2555                                 r.flagset =  parse_flags("SA");
2556                         }
2557                         if (!adaptive && r.max_states) {
2558                                 r.timeout[PFTM_ADAPTIVE_START] =
2559                                     (r.max_states / 10) * 6;
2560                                 r.timeout[PFTM_ADAPTIVE_END] =
2561                                     (r.max_states / 10) * 12;
2562                         }
2563                         if (r.rule_flag & PFRULE_SRCTRACK) {
2564                                 if (srctrack == PF_SRCTRACK_GLOBAL &&
2565                                     r.max_src_nodes) {
2566                                         yyerror("'max-src-nodes' is "
2567                                             "incompatible with "
2568                                             "'source-track global'");
2569                                         YYERROR;
2570                                 }
2571                                 if (srctrack == PF_SRCTRACK_GLOBAL &&
2572                                     r.max_src_conn) {
2573                                         yyerror("'max-src-conn' is "
2574                                             "incompatible with "
2575                                             "'source-track global'");
2576                                         YYERROR;
2577                                 }
2578                                 if (srctrack == PF_SRCTRACK_GLOBAL &&
2579                                     r.max_src_conn_rate.seconds) {
2580                                         yyerror("'max-src-conn-rate' is "
2581                                             "incompatible with "
2582                                             "'source-track global'");
2583                                         YYERROR;
2584                                 }
2585                                 if (r.timeout[PFTM_SRC_NODE] <
2586                                     r.max_src_conn_rate.seconds)
2587                                         r.timeout[PFTM_SRC_NODE] =
2588                                             r.max_src_conn_rate.seconds;
2589                                 r.rule_flag |= PFRULE_SRCTRACK;
2590                                 if (srctrack == PF_SRCTRACK_RULE)
2591                                         r.rule_flag |= PFRULE_RULESRCTRACK;
2592                         }
2593                         if (r.keep_state && !statelock)
2594                                 r.rule_flag |= default_statelock;
2595
2596                         if ($9.fragment)
2597                                 r.rule_flag |= PFRULE_FRAGMENT;
2598                         r.allow_opts = $9.allowopts;
2599
2600                         decide_address_family($8.src.host, &r.af);
2601                         decide_address_family($8.dst.host, &r.af);
2602
2603                         if ($5.rt) {
2604                                 if (!r.direction) {
2605                                         yyerror("direction must be explicit "
2606                                             "with rules that specify routing");
2607                                         YYERROR;
2608                                 }
2609                                 r.rt = $5.rt;
2610                                 r.rpool.opts = $5.pool_opts;
2611                                 if ($5.key != NULL)
2612                                         memcpy(&r.rpool.key, $5.key,
2613                                             sizeof(struct pf_poolhashkey));
2614                         }
2615                         if (r.rt) {
2616                                 decide_address_family($5.host, &r.af);
2617                                 remove_invalid_hosts(&$5.host, &r.af);
2618                                 if ($5.host == NULL) {
2619                                         yyerror("no routing address with "
2620                                             "matching address family found.");
2621                                         YYERROR;
2622                                 }
2623                                 if ((r.rpool.opts & PF_POOL_TYPEMASK) ==
2624                                     PF_POOL_NONE && ($5.host->next != NULL ||
2625                                     $5.host->addr.type == PF_ADDR_TABLE ||
2626                                     DYNIF_MULTIADDR($5.host->addr)))
2627                                         r.rpool.opts |= PF_POOL_ROUNDROBIN;
2628                                 if ((r.rpool.opts & PF_POOL_TYPEMASK) !=
2629                                     PF_POOL_ROUNDROBIN &&
2630                                     disallow_table($5.host, "tables are only "
2631                                     "supported in round-robin routing pools"))
2632                                         YYERROR;
2633                                 if ((r.rpool.opts & PF_POOL_TYPEMASK) !=
2634                                     PF_POOL_ROUNDROBIN &&
2635                                     disallow_alias($5.host, "interface (%s) "
2636                                     "is only supported in round-robin "
2637                                     "routing pools"))
2638                                         YYERROR;
2639                                 if ($5.host->next != NULL) {
2640                                         if ((r.rpool.opts & PF_POOL_TYPEMASK) !=
2641                                             PF_POOL_ROUNDROBIN) {
2642                                                 yyerror("r.rpool.opts must "
2643                                                     "be PF_POOL_ROUNDROBIN");
2644                                                 YYERROR;
2645                                         }
2646                                 }
2647                         }
2648                         if ($9.queues.qname != NULL) {
2649                                 if (strlcpy(r.qname, $9.queues.qname,
2650                                     sizeof(r.qname)) >= sizeof(r.qname)) {
2651                                         yyerror("rule qname too long (max "
2652                                             "%d chars)", sizeof(r.qname)-1);
2653                                         YYERROR;
2654                                 }
2655                                 free($9.queues.qname);
2656                         }
2657                         if ($9.queues.pqname != NULL) {
2658                                 if (strlcpy(r.pqname, $9.queues.pqname,
2659                                     sizeof(r.pqname)) >= sizeof(r.pqname)) {
2660                                         yyerror("rule pqname too long (max "
2661                                             "%d chars)", sizeof(r.pqname)-1);
2662                                         YYERROR;
2663                                 }
2664                                 free($9.queues.pqname);
2665                         }
2666 #ifdef __FreeBSD__
2667                         r.divert.port = $9.divert.port;
2668 #else
2669                         if ((r.divert.port = $9.divert.port)) {
2670                                 if (r.direction == PF_OUT) {
2671                                         if ($9.divert.addr) {
2672                                                 yyerror("address specified "
2673                                                     "for outgoing divert");
2674                                                 YYERROR;
2675                                         }
2676                                         bzero(&r.divert.addr,
2677                                             sizeof(r.divert.addr));
2678                                 } else {
2679                                         if (!$9.divert.addr) {
2680                                                 yyerror("no address specified "
2681                                                     "for incoming divert");
2682                                                 YYERROR;
2683                                         }
2684                                         if ($9.divert.addr->af != r.af) {
2685                                                 yyerror("address family "
2686                                                     "mismatch for divert");
2687                                                 YYERROR;
2688                                         }
2689                                         r.divert.addr =
2690                                             $9.divert.addr->addr.v.a.addr;
2691                                 }
2692                         }
2693 #endif
2694
2695                         if ($9.dnpipe || $9.dnrpipe) {
2696                                 r.dnpipe = $9.dnpipe;
2697                                 r.dnrpipe = $9.dnrpipe;
2698                                 if ($9.free_flags & PFRULE_DN_IS_PIPE)
2699                                         r.free_flags |= PFRULE_DN_IS_PIPE;
2700                                 else
2701                                         r.free_flags |= PFRULE_DN_IS_QUEUE;
2702                         }
2703
2704                         expand_rule(&r, $4, $5.host, $7, $8.src_os,
2705                             $8.src.host, $8.src.port, $8.dst.host, $8.dst.port,
2706                             $9.uid, $9.gid, $9.icmpspec, "");
2707                 }
2708                 ;
2709
2710 filter_opts     :       {
2711                                 bzero(&filter_opts, sizeof filter_opts);
2712                                 filter_opts.rtableid = -1;
2713                         }
2714                     filter_opts_l
2715                         { $$ = filter_opts; }
2716                 | /* empty */   {
2717                         bzero(&filter_opts, sizeof filter_opts);
2718                         filter_opts.rtableid = -1;
2719                         $$ = filter_opts;
2720                 }
2721                 ;
2722
2723 filter_opts_l   : filter_opts_l filter_opt
2724                 | filter_opt
2725                 ;
2726
2727 filter_opt      : USER uids {
2728                         if (filter_opts.uid)
2729                                 $2->tail->next = filter_opts.uid;
2730                         filter_opts.uid = $2;
2731                 }
2732                 | GROUP gids {
2733                         if (filter_opts.gid)
2734                                 $2->tail->next = filter_opts.gid;
2735                         filter_opts.gid = $2;
2736                 }
2737                 | flags {
2738                         if (filter_opts.marker & FOM_FLAGS) {
2739                                 yyerror("flags cannot be redefined");
2740                                 YYERROR;
2741                         }
2742                         filter_opts.marker |= FOM_FLAGS;
2743                         filter_opts.flags.b1 |= $1.b1;
2744                         filter_opts.flags.b2 |= $1.b2;
2745                         filter_opts.flags.w |= $1.w;
2746                         filter_opts.flags.w2 |= $1.w2;
2747                 }
2748                 | icmpspec {
2749                         if (filter_opts.marker & FOM_ICMP) {
2750                                 yyerror("icmp-type cannot be redefined");
2751                                 YYERROR;
2752                         }
2753                         filter_opts.marker |= FOM_ICMP;
2754                         filter_opts.icmpspec = $1;
2755                 }
2756                 | PRIO NUMBER {
2757                         if (filter_opts.marker & FOM_PRIO) {
2758                                 yyerror("prio cannot be redefined");
2759                                 YYERROR;
2760                         }
2761                         if ($2 < 0 || $2 > PF_PRIO_MAX) {
2762                                 yyerror("prio must be 0 - %u", PF_PRIO_MAX);
2763                                 YYERROR;
2764                         }
2765                         filter_opts.marker |= FOM_PRIO;
2766                         filter_opts.prio = $2;
2767                 }
2768                 | TOS tos {
2769                         if (filter_opts.marker & FOM_TOS) {
2770                                 yyerror("tos cannot be redefined");
2771                                 YYERROR;
2772                         }
2773                         filter_opts.marker |= FOM_TOS;
2774                         filter_opts.tos = $2;
2775                 }
2776                 | keep {
2777                         if (filter_opts.marker & FOM_KEEP) {
2778                                 yyerror("modulate or keep cannot be redefined");
2779                                 YYERROR;
2780                         }
2781                         filter_opts.marker |= FOM_KEEP;
2782                         filter_opts.keep.action = $1.action;
2783                         filter_opts.keep.options = $1.options;
2784                 }
2785                 | RIDENTIFIER number {
2786                         filter_opts.ridentifier = $2;
2787                 }
2788                 | FRAGMENT {
2789                         filter_opts.fragment = 1;
2790                 }
2791                 | ALLOWOPTS {
2792                         filter_opts.allowopts = 1;
2793                 }
2794                 | label {
2795                         if (filter_opts.labelcount >= PF_RULE_MAX_LABEL_COUNT) {
2796                                 yyerror("label can only be used %d times", PF_RULE_MAX_LABEL_COUNT);
2797                                 YYERROR;
2798                         }
2799                         filter_opts.label[filter_opts.labelcount++] = $1;
2800                 }
2801                 | qname {
2802                         if (filter_opts.queues.qname) {
2803                                 yyerror("queue cannot be redefined");
2804                                 YYERROR;
2805                         }
2806                         filter_opts.queues = $1;
2807                 }
2808                 | DNPIPE number {
2809                         filter_opts.dnpipe = $2;
2810                         filter_opts.free_flags |= PFRULE_DN_IS_PIPE;
2811                 }
2812                 | DNPIPE '(' number ')' {
2813                         filter_opts.dnpipe = $3;
2814                         filter_opts.free_flags |= PFRULE_DN_IS_PIPE;
2815                 }
2816                 | DNPIPE '(' number comma number ')' {
2817                         filter_opts.dnrpipe = $5;
2818                         filter_opts.dnpipe = $3;
2819                         filter_opts.free_flags |= PFRULE_DN_IS_PIPE;
2820                 }
2821                 | DNQUEUE number {
2822                         filter_opts.dnpipe = $2;
2823                         filter_opts.free_flags |= PFRULE_DN_IS_QUEUE;
2824                 }
2825                 | DNQUEUE '(' number comma number ')' {
2826                         filter_opts.dnrpipe = $5;
2827                         filter_opts.dnpipe = $3;
2828                         filter_opts.free_flags |= PFRULE_DN_IS_QUEUE;
2829                 }
2830                 | DNQUEUE '(' number ')' {
2831                         filter_opts.dnpipe = $3;
2832                         filter_opts.free_flags |= PFRULE_DN_IS_QUEUE;
2833                 }
2834                 | TAG string                            {
2835                         filter_opts.tag = $2;
2836                 }
2837                 | not TAGGED string                     {
2838                         filter_opts.match_tag = $3;
2839                         filter_opts.match_tag_not = $1;
2840                 }
2841                 | PROBABILITY probability               {
2842                         double  p;
2843
2844                         p = floor($2 * UINT_MAX + 0.5);
2845                         if (p < 0.0 || p > UINT_MAX) {
2846                                 yyerror("invalid probability: %lf", p);
2847                                 YYERROR;
2848                         }
2849                         filter_opts.prob = (u_int32_t)p;
2850                         if (filter_opts.prob == 0)
2851                                 filter_opts.prob = 1;
2852                 }
2853                 | RTABLE NUMBER                         {
2854                         if ($2 < 0 || $2 > rt_tableid_max()) {
2855                                 yyerror("invalid rtable id");
2856                                 YYERROR;
2857                         }
2858                         filter_opts.rtableid = $2;
2859                 }
2860                 | DIVERTTO portplain {
2861 #ifdef __FreeBSD__
2862                         filter_opts.divert.port = $2.a;
2863                         if (!filter_opts.divert.port) {
2864                                 yyerror("invalid divert port: %u", ntohs($2.a));
2865                                 YYERROR;
2866                         }
2867 #endif
2868                 }
2869                 | DIVERTTO STRING PORT portplain {
2870 #ifndef __FreeBSD__
2871                         if ((filter_opts.divert.addr = host($2)) == NULL) {
2872                                 yyerror("could not parse divert address: %s",
2873                                     $2);
2874                                 free($2);
2875                                 YYERROR;
2876                         }
2877 #else
2878                         if ($2)
2879 #endif
2880                         free($2);
2881                         filter_opts.divert.port = $4.a;
2882                         if (!filter_opts.divert.port) {
2883                                 yyerror("invalid divert port: %u", ntohs($4.a));
2884                                 YYERROR;
2885                         }
2886                 }
2887                 | DIVERTREPLY {
2888 #ifdef __FreeBSD__
2889                         yyerror("divert-reply has no meaning in FreeBSD pf(4)");
2890                         YYERROR;
2891 #else
2892                         filter_opts.divert.port = 1;    /* some random value */
2893 #endif
2894                 }
2895                 | filter_sets
2896                 ;
2897
2898 filter_sets     : SET '(' filter_sets_l ')'     { $$ = filter_opts; }
2899                 | SET filter_set                { $$ = filter_opts; }
2900                 ;
2901
2902 filter_sets_l   : filter_sets_l comma filter_set
2903                 | filter_set
2904                 ;
2905
2906 filter_set      : prio {
2907                         if (filter_opts.marker & FOM_SETPRIO) {
2908                                 yyerror("prio cannot be redefined");
2909                                 YYERROR;
2910                         }
2911                         filter_opts.marker |= FOM_SETPRIO;
2912                         filter_opts.set_prio[0] = $1.b1;
2913                         filter_opts.set_prio[1] = $1.b2;
2914                 }
2915 prio            : PRIO NUMBER {
2916                         if ($2 < 0 || $2 > PF_PRIO_MAX) {
2917                                 yyerror("prio must be 0 - %u", PF_PRIO_MAX);
2918                                 YYERROR;
2919                         }
2920                         $$.b1 = $$.b2 = $2;
2921                 }
2922                 | PRIO '(' NUMBER comma NUMBER ')' {
2923                         if ($3 < 0 || $3 > PF_PRIO_MAX ||
2924                             $5 < 0 || $5 > PF_PRIO_MAX) {
2925                                 yyerror("prio must be 0 - %u", PF_PRIO_MAX);
2926                                 YYERROR;
2927                         }
2928                         $$.b1 = $3;
2929                         $$.b2 = $5;
2930                 }
2931                 ;
2932
2933 probability     : STRING                                {
2934                         char    *e;
2935                         double   p = strtod($1, &e);
2936
2937                         if (*e == '%') {
2938                                 p *= 0.01;
2939                                 e++;
2940                         }
2941                         if (*e) {
2942                                 yyerror("invalid probability: %s", $1);
2943                                 free($1);
2944                                 YYERROR;
2945                         }
2946                         free($1);
2947                         $$ = p;
2948                 }
2949                 | NUMBER                                {
2950                         $$ = (double)$1;
2951                 }
2952                 ;
2953
2954
2955 action          : PASS                  {
2956                         $$.b1 = PF_PASS;
2957                         $$.b2 = failpolicy;
2958                         $$.w = returnicmpdefault;
2959                         $$.w2 = returnicmp6default;
2960                 }
2961                 | MATCH                 { $$.b1 = PF_MATCH; $$.b2 = $$.w = 0; }
2962                 | BLOCK blockspec       { $$ = $2; $$.b1 = PF_DROP; }
2963                 ;
2964
2965 blockspec       : /* empty */           {
2966                         $$.b2 = blockpolicy;
2967                         $$.w = returnicmpdefault;
2968                         $$.w2 = returnicmp6default;
2969                 }
2970                 | DROP                  {
2971                         $$.b2 = PFRULE_DROP;
2972                         $$.w = 0;
2973                         $$.w2 = 0;
2974                 }
2975                 | RETURNRST             {
2976                         $$.b2 = PFRULE_RETURNRST;
2977                         $$.w = 0;
2978                         $$.w2 = 0;
2979                 }
2980                 | RETURNRST '(' TTL NUMBER ')'  {
2981                         if ($4 < 0 || $4 > 255) {
2982                                 yyerror("illegal ttl value %d", $4);
2983                                 YYERROR;
2984                         }
2985                         $$.b2 = PFRULE_RETURNRST;
2986                         $$.w = $4;
2987                         $$.w2 = 0;
2988                 }
2989                 | RETURNICMP            {
2990                         $$.b2 = PFRULE_RETURNICMP;
2991                         $$.w = returnicmpdefault;
2992                         $$.w2 = returnicmp6default;
2993                 }
2994                 | RETURNICMP6           {
2995                         $$.b2 = PFRULE_RETURNICMP;
2996                         $$.w = returnicmpdefault;
2997                         $$.w2 = returnicmp6default;
2998                 }
2999                 | RETURNICMP '(' reticmpspec ')'        {
3000                         $$.b2 = PFRULE_RETURNICMP;
3001                         $$.w = $3;
3002                         $$.w2 = returnicmpdefault;
3003                 }
3004                 | RETURNICMP6 '(' reticmp6spec ')'      {
3005                         $$.b2 = PFRULE_RETURNICMP;
3006                         $$.w = returnicmpdefault;
3007                         $$.w2 = $3;
3008                 }
3009                 | RETURNICMP '(' reticmpspec comma reticmp6spec ')' {
3010                         $$.b2 = PFRULE_RETURNICMP;
3011                         $$.w = $3;
3012                         $$.w2 = $5;
3013                 }
3014                 | RETURN {
3015                         $$.b2 = PFRULE_RETURN;
3016                         $$.w = returnicmpdefault;
3017                         $$.w2 = returnicmp6default;
3018                 }
3019                 ;
3020
3021 reticmpspec     : STRING                        {
3022                         if (!($$ = parseicmpspec($1, AF_INET))) {
3023                                 free($1);
3024                                 YYERROR;
3025                         }
3026                         free($1);
3027                 }
3028                 | NUMBER                        {
3029                         u_int8_t                icmptype;
3030
3031                         if ($1 < 0 || $1 > 255) {
3032                                 yyerror("invalid icmp code %lu", $1);
3033                                 YYERROR;
3034                         }
3035                         icmptype = returnicmpdefault >> 8;
3036                         $$ = (icmptype << 8 | $1);
3037                 }
3038                 ;
3039
3040 reticmp6spec    : STRING                        {
3041                         if (!($$ = parseicmpspec($1, AF_INET6))) {
3042                                 free($1);
3043                                 YYERROR;
3044                         }
3045                         free($1);
3046                 }
3047                 | NUMBER                        {
3048                         u_int8_t                icmptype;
3049
3050                         if ($1 < 0 || $1 > 255) {
3051                                 yyerror("invalid icmp code %lu", $1);
3052                                 YYERROR;
3053                         }
3054                         icmptype = returnicmp6default >> 8;
3055                         $$ = (icmptype << 8 | $1);
3056                 }
3057                 ;
3058
3059 dir             : /* empty */                   { $$ = PF_INOUT; }
3060                 | IN                            { $$ = PF_IN; }
3061                 | OUT                           { $$ = PF_OUT; }
3062                 ;
3063
3064 quick           : /* empty */                   { $$.quick = 0; }
3065                 | QUICK                         { $$.quick = 1; }
3066                 ;
3067
3068 logquick        : /* empty */   { $$.log = 0; $$.quick = 0; $$.logif = 0; }
3069                 | log           { $$ = $1; $$.quick = 0; }
3070                 | QUICK         { $$.quick = 1; $$.log = 0; $$.logif = 0; }
3071                 | log QUICK     { $$ = $1; $$.quick = 1; }
3072                 | QUICK log     { $$ = $2; $$.quick = 1; }
3073                 ;
3074
3075 log             : LOG                   { $$.log = PF_LOG; $$.logif = 0; }
3076                 | LOG '(' logopts ')'   {
3077                         $$.log = PF_LOG | $3.log;
3078                         $$.logif = $3.logif;
3079                 }
3080                 ;
3081
3082 logopts         : logopt                        { $$ = $1; }
3083                 | logopts comma logopt          {
3084                         $$.log = $1.log | $3.log;
3085                         $$.logif = $3.logif;
3086                         if ($$.logif == 0)
3087                                 $$.logif = $1.logif;
3088                 }
3089                 ;
3090
3091 logopt          : ALL           { $$.log = PF_LOG_ALL; $$.logif = 0; }
3092                 | USER          { $$.log = PF_LOG_SOCKET_LOOKUP; $$.logif = 0; }
3093                 | GROUP         { $$.log = PF_LOG_SOCKET_LOOKUP; $$.logif = 0; }
3094                 | TO string     {
3095                         const char      *errstr;
3096                         u_int            i;
3097
3098                         $$.log = 0;
3099                         if (strncmp($2, "pflog", 5)) {
3100                                 yyerror("%s: should be a pflog interface", $2);
3101                                 free($2);
3102                                 YYERROR;
3103                         }
3104                         i = strtonum($2 + 5, 0, 255, &errstr);
3105                         if (errstr) {
3106                                 yyerror("%s: %s", $2, errstr);
3107                                 free($2);
3108                                 YYERROR;
3109                         }
3110                         free($2);
3111                         $$.logif = i;
3112                 }
3113                 ;
3114
3115 interface       : /* empty */                   { $$ = NULL; }
3116                 | ON if_item_not                { $$ = $2; }
3117                 | ON '{' optnl if_list '}'      { $$ = $4; }
3118                 ;
3119
3120 if_list         : if_item_not optnl             { $$ = $1; }
3121                 | if_list comma if_item_not optnl       {
3122                         $1->tail->next = $3;
3123                         $1->tail = $3;
3124                         $$ = $1;
3125                 }
3126                 ;
3127
3128 if_item_not     : not if_item                   { $$ = $2; $$->not = $1; }
3129                 ;
3130
3131 if_item         : STRING                        {
3132                         struct node_host        *n;
3133
3134                         $$ = calloc(1, sizeof(struct node_if));
3135                         if ($$ == NULL)
3136                                 err(1, "if_item: calloc");
3137                         if (strlcpy($$->ifname, $1, sizeof($$->ifname)) >=
3138                             sizeof($$->ifname)) {
3139                                 free($1);
3140                                 free($$);
3141                                 yyerror("interface name too long");
3142                                 YYERROR;
3143                         }
3144
3145                         if ((n = ifa_exists($1)) != NULL)
3146                                 $$->ifa_flags = n->ifa_flags;
3147
3148                         free($1);
3149                         $$->not = 0;
3150                         $$->next = NULL;
3151                         $$->tail = $$;
3152                 }
3153                 ;
3154
3155 af              : /* empty */                   { $$ = 0; }
3156                 | INET                          { $$ = AF_INET; }
3157                 | INET6                         { $$ = AF_INET6; }
3158                 ;
3159
3160 etherproto      : /* empty */                           { $$ = NULL; }
3161                 | PROTO etherproto_item                 { $$ = $2; }
3162                 | PROTO '{' optnl etherproto_list '}'   { $$ = $4; }
3163                 ;
3164
3165 etherproto_list : etherproto_item optnl                 { $$ = $1; }
3166                 | etherproto_list comma etherproto_item optnl   {
3167                         $1->tail->next = $3;
3168                         $1->tail = $3;
3169                         $$ = $1;
3170                 }
3171                 ;
3172
3173 etherproto_item : etherprotoval         {
3174                         u_int16_t       pr;
3175
3176                         pr = (u_int16_t)$1;
3177                         if (pr == 0) {
3178                                 yyerror("proto 0 cannot be used");
3179                                 YYERROR;
3180                         }
3181                         $$ = calloc(1, sizeof(struct node_proto));
3182                         if ($$ == NULL)
3183                                 err(1, "proto_item: calloc");
3184                         $$->proto = pr;
3185                         $$->next = NULL;
3186                         $$->tail = $$;
3187                 }
3188                 ;
3189
3190 etherprotoval   : NUMBER                        {
3191                         if ($1 < 0 || $1 > 65565) {
3192                                 yyerror("protocol outside range");
3193                                 YYERROR;
3194                         }
3195                 }
3196                 | STRING
3197                 {
3198                         if (!strncmp($1, "0x", 2)) {
3199                                 if (sscanf($1, "0x%4x", &$$) != 1) {
3200                                         free($1);
3201                                         yyerror("invalid EtherType hex");
3202                                         YYERROR;
3203                                 }
3204                         } else {
3205                                 yyerror("Symbolic EtherType not yet supported");
3206                         }
3207                 }
3208                 ;
3209
3210 proto           : /* empty */                           { $$ = NULL; }
3211                 | PROTO proto_item                      { $$ = $2; }
3212                 | PROTO '{' optnl proto_list '}'        { $$ = $4; }
3213                 ;
3214
3215 proto_list      : proto_item optnl              { $$ = $1; }
3216                 | proto_list comma proto_item optnl     {
3217                         $1->tail->next = $3;
3218                         $1->tail = $3;
3219                         $$ = $1;
3220                 }
3221                 ;
3222
3223 proto_item      : protoval                      {
3224                         u_int8_t        pr;
3225
3226                         pr = (u_int8_t)$1;
3227                         if (pr == 0) {
3228                                 yyerror("proto 0 cannot be used");
3229                                 YYERROR;
3230                         }
3231                         $$ = calloc(1, sizeof(struct node_proto));
3232                         if ($$ == NULL)
3233                                 err(1, "proto_item: calloc");
3234                         $$->proto = pr;
3235                         $$->next = NULL;
3236                         $$->tail = $$;
3237                 }
3238                 ;
3239
3240 protoval        : STRING                        {
3241                         struct protoent *p;
3242
3243                         p = getprotobyname($1);
3244                         if (p == NULL) {
3245                                 yyerror("unknown protocol %s", $1);
3246                                 free($1);
3247                                 YYERROR;
3248                         }
3249                         $$ = p->p_proto;
3250                         free($1);
3251                 }
3252                 | NUMBER                        {
3253                         if ($1 < 0 || $1 > 255) {
3254                                 yyerror("protocol outside range");
3255                                 YYERROR;
3256                         }
3257                 }
3258                 ;
3259
3260 l3fromto        : /* empty */                   {
3261                         bzero(&$$, sizeof($$));
3262                 }
3263                 | L3 fromto                     {
3264                         if ($2.src.host != NULL &&
3265                             $2.src.host->addr.type != PF_ADDR_ADDRMASK) {
3266                                 yyerror("from must be an address");
3267                                 YYERROR;
3268                         }
3269                         if ($2.dst.host != NULL &&
3270                             $2.dst.host->addr.type != PF_ADDR_ADDRMASK) {
3271                                 yyerror("to must be an address");
3272                                 YYERROR;
3273                         }
3274                         $$ = $2;
3275                 }
3276                 ;
3277 etherfromto     : ALL                           {
3278                         $$.src = NULL;
3279                         $$.dst = NULL;
3280                 }
3281                 | etherfrom etherto             {
3282                         $$.src = $1.mac;
3283                         $$.dst = $2.mac;
3284                 }
3285                 ;
3286
3287 etherfrom       : /* emtpy */                   {
3288                         bzero(&$$, sizeof($$));
3289                 }
3290                 | FROM macspec                  {
3291                         $$.mac = $2;
3292                 }
3293                 ;
3294
3295 etherto         : /* empty */                   {
3296                         bzero(&$$, sizeof($$));
3297                 }
3298                 | TO macspec                    {
3299                         $$.mac = $2;
3300                 }
3301                 ;
3302
3303 mac             : string '/' NUMBER             {
3304                         $$ = node_mac_from_string_masklen($1, $3);
3305                         free($1);
3306                         if ($$ == NULL)
3307                                 YYERROR;
3308                 }
3309                 | string                        {
3310                         if (strchr($1, '&')) {
3311                                 /* mac&mask */
3312                                 char *mac = strtok($1, "&");
3313                                 char *mask = strtok(NULL, "&");
3314                                 $$ = node_mac_from_string_mask(mac, mask);
3315                         } else {
3316                                 $$ = node_mac_from_string($1);
3317                         }
3318                         free($1);
3319                         if ($$ == NULL)
3320                                 YYERROR;
3321
3322                 }
3323 xmac            : not mac {
3324                         struct node_mac *n;
3325
3326                         for (n = $2; n != NULL; n = n->next)
3327                                 n->neg = $1;
3328                         $$ = $2;
3329                 }
3330                 ;
3331 macspec         : xmac {
3332                         $$ = $1;
3333                 }
3334                 | '{' optnl mac_list '}'
3335                 {
3336                         $$ = $3;
3337                 }
3338                 ;
3339 mac_list        : xmac optnl {
3340                         $$ = $1;
3341                 }
3342                 | mac_list comma xmac {
3343                         if ($3 == NULL)
3344                                 $$ = $1;
3345                         else if ($1 == NULL)
3346                                 $$ = $3;
3347                         else {
3348                                 $1->tail->next = $3;
3349                                 $1->tail = $3->tail;
3350                                 $$ = $1;
3351                         }
3352                 }
3353
3354 fromto          : ALL                           {
3355                         $$.src.host = NULL;
3356                         $$.src.port = NULL;
3357                         $$.dst.host = NULL;
3358                         $$.dst.port = NULL;
3359                         $$.src_os = NULL;
3360                 }
3361                 | from os to                    {
3362                         $$.src = $1;
3363                         $$.src_os = $2;
3364                         $$.dst = $3;
3365                 }
3366                 ;
3367
3368 os              : /* empty */                   { $$ = NULL; }
3369                 | OS xos                        { $$ = $2; }
3370                 | OS '{' optnl os_list '}'      { $$ = $4; }
3371                 ;
3372
3373 xos             : STRING {
3374                         $$ = calloc(1, sizeof(struct node_os));
3375                         if ($$ == NULL)
3376                                 err(1, "os: calloc");
3377                         $$->os = $1;
3378                         $$->tail = $$;
3379                 }
3380                 ;
3381
3382 os_list         : xos optnl                     { $$ = $1; }
3383                 | os_list comma xos optnl       {
3384                         $1->tail->next = $3;
3385                         $1->tail = $3;
3386                         $$ = $1;
3387                 }
3388                 ;
3389
3390 from            : /* empty */                   {
3391                         $$.host = NULL;
3392                         $$.port = NULL;
3393                 }
3394                 | FROM ipportspec               {
3395                         $$ = $2;
3396                 }
3397                 ;
3398
3399 to              : /* empty */                   {
3400                         $$.host = NULL;
3401                         $$.port = NULL;
3402                 }
3403                 | TO ipportspec         {
3404                         if (disallow_urpf_failed($2.host, "\"urpf-failed\" is "
3405                             "not permitted in a destination address"))
3406                                 YYERROR;
3407                         $$ = $2;
3408                 }
3409                 ;
3410
3411 ipportspec      : ipspec                        {
3412                         $$.host = $1;
3413                         $$.port = NULL;
3414                 }
3415                 | ipspec PORT portspec          {
3416                         $$.host = $1;
3417                         $$.port = $3;
3418                 }
3419                 | PORT portspec                 {
3420                         $$.host = NULL;
3421                         $$.port = $2;
3422                 }
3423                 ;
3424
3425 optnl           : '\n' optnl
3426                 |
3427                 ;
3428
3429 ipspec          : ANY                           { $$ = NULL; }
3430                 | xhost                         { $$ = $1; }
3431                 | '{' optnl host_list '}'       { $$ = $3; }
3432                 ;
3433
3434 toipspec        : TO ipspec                     { $$ = $2; }
3435                 | /* empty */                   { $$ = NULL; }
3436                 ;
3437
3438 host_list       : ipspec optnl                  { $$ = $1; }
3439                 | host_list comma ipspec optnl  {
3440                         if ($3 == NULL)
3441                                 $$ = $1;
3442                         else if ($1 == NULL)
3443                                 $$ = $3;
3444                         else {
3445                                 $1->tail->next = $3;
3446                                 $1->tail = $3->tail;
3447                                 $$ = $1;
3448                         }
3449                 }
3450                 ;
3451
3452 xhost           : not host                      {
3453                         struct node_host        *n;
3454
3455                         for (n = $2; n != NULL; n = n->next)
3456                                 n->not = $1;
3457                         $$ = $2;
3458                 }
3459                 | not NOROUTE                   {
3460                         $$ = calloc(1, sizeof(struct node_host));
3461                         if ($$ == NULL)
3462                                 err(1, "xhost: calloc");
3463                         $$->addr.type = PF_ADDR_NOROUTE;
3464                         $$->next = NULL;
3465                         $$->not = $1;
3466                         $$->tail = $$;
3467                 }
3468                 | not URPFFAILED                {
3469                         $$ = calloc(1, sizeof(struct node_host));
3470                         if ($$ == NULL)
3471                                 err(1, "xhost: calloc");
3472                         $$->addr.type = PF_ADDR_URPFFAILED;
3473                         $$->next = NULL;
3474                         $$->not = $1;
3475                         $$->tail = $$;
3476                 }
3477                 ;
3478
3479 host            : STRING                        {
3480                         if (($$ = host($1)) == NULL)    {
3481                                 /* error. "any" is handled elsewhere */
3482                                 free($1);
3483                                 yyerror("could not parse host specification");
3484                                 YYERROR;
3485                         }
3486                         free($1);
3487
3488                 }
3489                 | STRING '-' STRING             {
3490                         struct node_host *b, *e;
3491
3492                         if ((b = host($1)) == NULL || (e = host($3)) == NULL) {
3493                                 free($1);
3494                                 free($3);
3495                                 yyerror("could not parse host specification");
3496                                 YYERROR;
3497                         }
3498                         if (b->af != e->af ||
3499                             b->addr.type != PF_ADDR_ADDRMASK ||
3500                             e->addr.type != PF_ADDR_ADDRMASK ||
3501                             unmask(&b->addr.v.a.mask, b->af) !=
3502                             (b->af == AF_INET ? 32 : 128) ||
3503                             unmask(&e->addr.v.a.mask, e->af) !=
3504                             (e->af == AF_INET ? 32 : 128) ||
3505                             b->next != NULL || b->not ||
3506                             e->next != NULL || e->not) {
3507                                 free(b);
3508                                 free(e);
3509                                 free($1);
3510                                 free($3);
3511                                 yyerror("invalid address range");
3512                                 YYERROR;
3513                         }
3514                         memcpy(&b->addr.v.a.mask, &e->addr.v.a.addr,
3515                             sizeof(b->addr.v.a.mask));
3516                         b->addr.type = PF_ADDR_RANGE;
3517                         $$ = b;
3518                         free(e);
3519                         free($1);
3520                         free($3);
3521                 }
3522                 | STRING '/' NUMBER             {
3523                         char    *buf;
3524
3525                         if (asprintf(&buf, "%s/%lld", $1, (long long)$3) == -1)
3526                                 err(1, "host: asprintf");
3527                         free($1);
3528                         if (($$ = host(buf)) == NULL)   {
3529                                 /* error. "any" is handled elsewhere */
3530                                 free(buf);
3531                                 yyerror("could not parse host specification");
3532                                 YYERROR;
3533                         }
3534                         free(buf);
3535                 }
3536                 | NUMBER '/' NUMBER             {
3537                         char    *buf;
3538
3539                         /* ie. for 10/8 parsing */
3540 #ifdef __FreeBSD__
3541                         if (asprintf(&buf, "%lld/%lld", (long long)$1, (long long)$3) == -1)
3542 #else
3543                         if (asprintf(&buf, "%lld/%lld", $1, $3) == -1)
3544 #endif
3545                                 err(1, "host: asprintf");
3546                         if (($$ = host(buf)) == NULL)   {
3547                                 /* error. "any" is handled elsewhere */
3548                                 free(buf);
3549                                 yyerror("could not parse host specification");
3550                                 YYERROR;
3551                         }
3552                         free(buf);
3553                 }
3554                 | dynaddr
3555                 | dynaddr '/' NUMBER            {
3556                         struct node_host        *n;
3557
3558                         if ($3 < 0 || $3 > 128) {
3559                                 yyerror("bit number too big");
3560                                 YYERROR;
3561                         }
3562                         $$ = $1;
3563                         for (n = $1; n != NULL; n = n->next)
3564                                 set_ipmask(n, $3);
3565                 }
3566                 | '<' STRING '>'        {
3567                         if (strlen($2) >= PF_TABLE_NAME_SIZE) {
3568                                 yyerror("table name '%s' too long", $2);
3569                                 free($2);
3570                                 YYERROR;
3571                         }
3572                         $$ = calloc(1, sizeof(struct node_host));
3573                         if ($$ == NULL)
3574                                 err(1, "host: calloc");
3575                         $$->addr.type = PF_ADDR_TABLE;
3576                         if (strlcpy($$->addr.v.tblname, $2,
3577                             sizeof($$->addr.v.tblname)) >=
3578                             sizeof($$->addr.v.tblname))
3579                                 errx(1, "host: strlcpy");
3580                         free($2);
3581                         $$->next = NULL;
3582                         $$->tail = $$;
3583                 }
3584                 ;
3585
3586 number          : NUMBER
3587                 | STRING                {
3588                         u_long  ulval;
3589
3590                         if (atoul($1, &ulval) == -1) {
3591                                 yyerror("%s is not a number", $1);
3592                                 free($1);
3593                                 YYERROR;
3594                         } else
3595                                 $$ = ulval;
3596                         free($1);
3597                 }
3598                 ;
3599
3600 dynaddr         : '(' STRING ')'                {
3601                         int      flags = 0;
3602                         char    *p, *op;
3603
3604                         op = $2;
3605                         if (!isalpha(op[0])) {
3606                                 yyerror("invalid interface name '%s'", op);
3607                                 free(op);
3608                                 YYERROR;
3609                         }
3610                         while ((p = strrchr($2, ':')) != NULL) {
3611                                 if (!strcmp(p+1, "network"))
3612                                         flags |= PFI_AFLAG_NETWORK;
3613                                 else if (!strcmp(p+1, "broadcast"))
3614                                         flags |= PFI_AFLAG_BROADCAST;
3615                                 else if (!strcmp(p+1, "peer"))
3616                                         flags |= PFI_AFLAG_PEER;
3617                                 else if (!strcmp(p+1, "0"))
3618                                         flags |= PFI_AFLAG_NOALIAS;
3619                                 else {
3620                                         yyerror("interface %s has bad modifier",
3621                                             $2);
3622                                         free(op);
3623                                         YYERROR;
3624                                 }
3625                                 *p = '\0';
3626                         }
3627                         if (flags & (flags - 1) & PFI_AFLAG_MODEMASK) {
3628                                 free(op);
3629                                 yyerror("illegal combination of "
3630                                     "interface modifiers");
3631                                 YYERROR;
3632                         }
3633                         $$ = calloc(1, sizeof(struct node_host));
3634                         if ($$ == NULL)
3635                                 err(1, "address: calloc");
3636                         $$->af = 0;
3637                         set_ipmask($$, 128);
3638                         $$->addr.type = PF_ADDR_DYNIFTL;
3639                         $$->addr.iflags = flags;
3640                         if (strlcpy($$->addr.v.ifname, $2,
3641                             sizeof($$->addr.v.ifname)) >=
3642                             sizeof($$->addr.v.ifname)) {
3643                                 free(op);
3644                                 free($$);
3645                                 yyerror("interface name too long");
3646                                 YYERROR;
3647                         }
3648                         free(op);
3649                         $$->next = NULL;
3650                         $$->tail = $$;
3651                 }
3652                 ;
3653
3654 portspec        : port_item                     { $$ = $1; }
3655                 | '{' optnl port_list '}'       { $$ = $3; }
3656                 ;
3657
3658 port_list       : port_item optnl               { $$ = $1; }
3659                 | port_list comma port_item optnl       {
3660                         $1->tail->next = $3;
3661                         $1->tail = $3;
3662                         $$ = $1;
3663                 }
3664                 ;
3665
3666 port_item       : portrange                     {
3667                         $$ = calloc(1, sizeof(struct node_port));
3668                         if ($$ == NULL)
3669                                 err(1, "port_item: calloc");
3670                         $$->port[0] = $1.a;
3671                         $$->port[1] = $1.b;
3672                         if ($1.t)
3673                                 $$->op = PF_OP_RRG;
3674                         else
3675                                 $$->op = PF_OP_EQ;
3676                         $$->next = NULL;
3677                         $$->tail = $$;
3678                 }
3679                 | unaryop portrange     {
3680                         if ($2.t) {
3681                                 yyerror("':' cannot be used with an other "
3682                                     "port operator");
3683                                 YYERROR;
3684                         }
3685                         $$ = calloc(1, sizeof(struct node_port));
3686                         if ($$ == NULL)
3687                                 err(1, "port_item: calloc");
3688                         $$->port[0] = $2.a;
3689                         $$->port[1] = $2.b;
3690                         $$->op = $1;
3691                         $$->next = NULL;
3692                         $$->tail = $$;
3693                 }
3694                 | portrange PORTBINARY portrange        {
3695                         if ($1.t || $3.t) {
3696                                 yyerror("':' cannot be used with an other "
3697                                     "port operator");
3698                                 YYERROR;
3699                         }
3700                         $$ = calloc(1, sizeof(struct node_port));
3701                         if ($$ == NULL)
3702                                 err(1, "port_item: calloc");
3703                         $$->port[0] = $1.a;
3704                         $$->port[1] = $3.a;
3705                         $$->op = $2;
3706                         $$->next = NULL;
3707                         $$->tail = $$;
3708                 }
3709                 ;
3710
3711 portplain       : numberstring                  {
3712                         if (parseport($1, &$$, 0) == -1) {
3713                                 free($1);
3714                                 YYERROR;
3715                         }
3716                         free($1);
3717                 }
3718                 ;
3719
3720 portrange       : numberstring                  {
3721                         if (parseport($1, &$$, PPORT_RANGE) == -1) {
3722                                 free($1);
3723                                 YYERROR;
3724                         }
3725                         free($1);
3726                 }
3727                 ;
3728
3729 uids            : uid_item                      { $$ = $1; }
3730                 | '{' optnl uid_list '}'        { $$ = $3; }
3731                 ;
3732
3733 uid_list        : uid_item optnl                { $$ = $1; }
3734                 | uid_list comma uid_item optnl {
3735                         $1->tail->next = $3;
3736                         $1->tail = $3;
3737                         $$ = $1;
3738                 }
3739                 ;
3740
3741 uid_item        : uid                           {
3742                         $$ = calloc(1, sizeof(struct node_uid));
3743                         if ($$ == NULL)
3744                                 err(1, "uid_item: calloc");
3745                         $$->uid[0] = $1;
3746                         $$->uid[1] = $1;
3747                         $$->op = PF_OP_EQ;
3748                         $$->next = NULL;
3749                         $$->tail = $$;
3750                 }
3751                 | unaryop uid                   {
3752                         if ($2 == UID_MAX && $1 != PF_OP_EQ && $1 != PF_OP_NE) {
3753                                 yyerror("user unknown requires operator = or "
3754                                     "!=");
3755                                 YYERROR;
3756                         }
3757                         $$ = calloc(1, sizeof(struct node_uid));
3758                         if ($$ == NULL)
3759                                 err(1, "uid_item: calloc");
3760                         $$->uid[0] = $2;
3761                         $$->uid[1] = $2;
3762                         $$->op = $1;
3763                         $$->next = NULL;
3764                         $$->tail = $$;
3765                 }
3766                 | uid PORTBINARY uid            {
3767                         if ($1 == UID_MAX || $3 == UID_MAX) {
3768                                 yyerror("user unknown requires operator = or "
3769                                     "!=");
3770                                 YYERROR;
3771                         }
3772                         $$ = calloc(1, sizeof(struct node_uid));
3773                         if ($$ == NULL)
3774                                 err(1, "uid_item: calloc");
3775                         $$->uid[0] = $1;
3776                         $$->uid[1] = $3;
3777                         $$->op = $2;
3778                         $$->next = NULL;
3779                         $$->tail = $$;
3780                 }
3781                 ;
3782
3783 uid             : STRING                        {
3784                         if (!strcmp($1, "unknown"))
3785                                 $$ = UID_MAX;
3786                         else {
3787                                 struct passwd   *pw;
3788
3789                                 if ((pw = getpwnam($1)) == NULL) {
3790                                         yyerror("unknown user %s", $1);
3791                                         free($1);
3792                                         YYERROR;
3793                                 }
3794                                 $$ = pw->pw_uid;
3795                         }
3796                         free($1);
3797                 }
3798                 | NUMBER                        {
3799                         if ($1 < 0 || $1 >= UID_MAX) {
3800                                 yyerror("illegal uid value %lu", $1);
3801                                 YYERROR;
3802                         }
3803                         $$ = $1;
3804                 }
3805                 ;
3806
3807 gids            : gid_item                      { $$ = $1; }
3808                 | '{' optnl gid_list '}'        { $$ = $3; }
3809                 ;
3810
3811 gid_list        : gid_item optnl                { $$ = $1; }
3812                 | gid_list comma gid_item optnl {
3813                         $1->tail->next = $3;
3814                         $1->tail = $3;
3815                         $$ = $1;
3816                 }
3817                 ;
3818
3819 gid_item        : gid                           {
3820                         $$ = calloc(1, sizeof(struct node_gid));
3821                         if ($$ == NULL)
3822                                 err(1, "gid_item: calloc");
3823                         $$->gid[0] = $1;
3824                         $$->gid[1] = $1;
3825                         $$->op = PF_OP_EQ;
3826                         $$->next = NULL;
3827                         $$->tail = $$;
3828                 }
3829                 | unaryop gid                   {
3830                         if ($2 == GID_MAX && $1 != PF_OP_EQ && $1 != PF_OP_NE) {
3831                                 yyerror("group unknown requires operator = or "
3832                                     "!=");
3833                                 YYERROR;
3834                         }
3835                         $$ = calloc(1, sizeof(struct node_gid));
3836                         if ($$ == NULL)
3837                                 err(1, "gid_item: calloc");
3838                         $$->gid[0] = $2;
3839                         $$->gid[1] = $2;
3840                         $$->op = $1;
3841                         $$->next = NULL;
3842                         $$->tail = $$;
3843                 }
3844                 | gid PORTBINARY gid            {
3845                         if ($1 == GID_MAX || $3 == GID_MAX) {
3846                                 yyerror("group unknown requires operator = or "
3847                                     "!=");
3848                                 YYERROR;
3849                         }
3850                         $$ = calloc(1, sizeof(struct node_gid));
3851                         if ($$ == NULL)
3852                                 err(1, "gid_item: calloc");
3853                         $$->gid[0] = $1;
3854                         $$->gid[1] = $3;
3855                         $$->op = $2;
3856                         $$->next = NULL;
3857                         $$->tail = $$;
3858                 }
3859                 ;
3860
3861 gid             : STRING                        {
3862                         if (!strcmp($1, "unknown"))
3863                                 $$ = GID_MAX;
3864                         else {
3865                                 struct group    *grp;
3866
3867                                 if ((grp = getgrnam($1)) == NULL) {
3868                                         yyerror("unknown group %s", $1);
3869                                         free($1);
3870                                         YYERROR;
3871                                 }
3872                                 $$ = grp->gr_gid;
3873                         }
3874                         free($1);
3875                 }
3876                 | NUMBER                        {
3877                         if ($1 < 0 || $1 >= GID_MAX) {
3878                                 yyerror("illegal gid value %lu", $1);
3879                                 YYERROR;
3880                         }
3881                         $$ = $1;
3882                 }
3883                 ;
3884
3885 flag            : STRING                        {
3886                         int     f;
3887
3888                         if ((f = parse_flags($1)) < 0) {
3889                                 yyerror("bad flags %s", $1);
3890                                 free($1);
3891                                 YYERROR;
3892                         }
3893                         free($1);
3894                         $$.b1 = f;
3895                 }
3896                 ;
3897
3898 flags           : FLAGS flag '/' flag   { $$.b1 = $2.b1; $$.b2 = $4.b1; }
3899                 | FLAGS '/' flag        { $$.b1 = 0; $$.b2 = $3.b1; }
3900                 | FLAGS ANY             { $$.b1 = 0; $$.b2 = 0; }
3901                 ;
3902
3903 icmpspec        : ICMPTYPE icmp_item                    { $$ = $2; }
3904                 | ICMPTYPE '{' optnl icmp_list '}'      { $$ = $4; }
3905                 | ICMP6TYPE icmp6_item                  { $$ = $2; }
3906                 | ICMP6TYPE '{' optnl icmp6_list '}'    { $$ = $4; }
3907                 ;
3908
3909 icmp_list       : icmp_item optnl               { $$ = $1; }
3910                 | icmp_list comma icmp_item optnl {
3911                         $1->tail->next = $3;
3912                         $1->tail = $3;
3913                         $$ = $1;
3914                 }
3915                 ;
3916
3917 icmp6_list      : icmp6_item optnl              { $$ = $1; }
3918                 | icmp6_list comma icmp6_item optnl {
3919                         $1->tail->next = $3;
3920                         $1->tail = $3;
3921                         $$ = $1;
3922                 }
3923                 ;
3924
3925 icmp_item       : icmptype              {
3926                         $$ = calloc(1, sizeof(struct node_icmp));
3927                         if ($$ == NULL)
3928                                 err(1, "icmp_item: calloc");
3929                         $$->type = $1;
3930                         $$->code = 0;
3931                         $$->proto = IPPROTO_ICMP;
3932                         $$->next = NULL;
3933                         $$->tail = $$;
3934                 }
3935                 | icmptype CODE STRING  {
3936                         const struct icmpcodeent        *p;
3937
3938                         if ((p = geticmpcodebyname($1-1, $3, AF_INET)) == NULL) {
3939                                 yyerror("unknown icmp-code %s", $3);
3940                                 free($3);
3941                                 YYERROR;
3942                         }
3943
3944                         free($3);
3945                         $$ = calloc(1, sizeof(struct node_icmp));
3946                         if ($$ == NULL)
3947                                 err(1, "icmp_item: calloc");
3948                         $$->type = $1;
3949                         $$->code = p->code + 1;
3950                         $$->proto = IPPROTO_ICMP;
3951                         $$->next = NULL;
3952                         $$->tail = $$;
3953                 }
3954                 | icmptype CODE NUMBER  {
3955                         if ($3 < 0 || $3 > 255) {
3956                                 yyerror("illegal icmp-code %lu", $3);
3957                                 YYERROR;
3958                         }
3959                         $$ = calloc(1, sizeof(struct node_icmp));
3960                         if ($$ == NULL)
3961                                 err(1, "icmp_item: calloc");
3962                         $$->type = $1;
3963                         $$->code = $3 + 1;
3964                         $$->proto = IPPROTO_ICMP;
3965                         $$->next = NULL;
3966                         $$->tail = $$;
3967                 }
3968                 ;
3969
3970 icmp6_item      : icmp6type             {
3971                         $$ = calloc(1, sizeof(struct node_icmp));
3972                         if ($$ == NULL)
3973                                 err(1, "icmp_item: calloc");
3974                         $$->type = $1;
3975                         $$->code = 0;
3976                         $$->proto = IPPROTO_ICMPV6;
3977                         $$->next = NULL;
3978                         $$->tail = $$;
3979                 }
3980                 | icmp6type CODE STRING {
3981                         const struct icmpcodeent        *p;
3982
3983                         if ((p = geticmpcodebyname($1-1, $3, AF_INET6)) == NULL) {
3984                                 yyerror("unknown icmp6-code %s", $3);
3985                                 free($3);
3986                                 YYERROR;
3987                         }
3988                         free($3);
3989
3990                         $$ = calloc(1, sizeof(struct node_icmp));
3991                         if ($$ == NULL)
3992                                 err(1, "icmp_item: calloc");
3993                         $$->type = $1;
3994                         $$->code = p->code + 1;
3995                         $$->proto = IPPROTO_ICMPV6;
3996                         $$->next = NULL;
3997                         $$->tail = $$;
3998                 }
3999                 | icmp6type CODE NUMBER {
4000                         if ($3 < 0 || $3 > 255) {
4001                                 yyerror("illegal icmp-code %lu", $3);
4002                                 YYERROR;
4003                         }
4004                         $$ = calloc(1, sizeof(struct node_icmp));
4005                         if ($$ == NULL)
4006                                 err(1, "icmp_item: calloc");
4007                         $$->type = $1;
4008                         $$->code = $3 + 1;
4009                         $$->proto = IPPROTO_ICMPV6;
4010                         $$->next = NULL;
4011                         $$->tail = $$;
4012                 }
4013                 ;
4014
4015 icmptype        : STRING                        {
4016                         const struct icmptypeent        *p;
4017
4018                         if ((p = geticmptypebyname($1, AF_INET)) == NULL) {
4019                                 yyerror("unknown icmp-type %s", $1);
4020                                 free($1);
4021                                 YYERROR;
4022                         }
4023                         $$ = p->type + 1;
4024                         free($1);
4025                 }
4026                 | NUMBER                        {
4027                         if ($1 < 0 || $1 > 255) {
4028                                 yyerror("illegal icmp-type %lu", $1);
4029                                 YYERROR;
4030                         }
4031                         $$ = $1 + 1;
4032                 }
4033                 ;
4034
4035 icmp6type       : STRING                        {
4036                         const struct icmptypeent        *p;
4037
4038                         if ((p = geticmptypebyname($1, AF_INET6)) ==
4039                             NULL) {
4040                                 yyerror("unknown icmp6-type %s", $1);
4041                                 free($1);
4042                                 YYERROR;
4043                         }
4044                         $$ = p->type + 1;
4045                         free($1);
4046                 }
4047                 | NUMBER                        {
4048                         if ($1 < 0 || $1 > 255) {
4049                                 yyerror("illegal icmp6-type %lu", $1);
4050                                 YYERROR;
4051                         }
4052                         $$ = $1 + 1;
4053                 }
4054                 ;
4055
4056 tos     : STRING                        {
4057                         int val;
4058                         char *end;
4059
4060                         if (map_tos($1, &val))
4061                                 $$ = val;
4062                         else if ($1[0] == '0' && $1[1] == 'x') {
4063                                 errno = 0;
4064                                 $$ = strtoul($1, &end, 16);
4065                                 if (errno || *end != '\0')
4066                                         $$ = 256;
4067                         } else
4068                                 $$ = 256;               /* flag bad argument */
4069                         if ($$ < 0 || $$ > 255) {
4070                                 yyerror("illegal tos value %s", $1);
4071                                 free($1);
4072                                 YYERROR;
4073                         }
4074                         free($1);
4075                 }
4076                 | NUMBER                        {
4077                         $$ = $1;
4078                         if ($$ < 0 || $$ > 255) {
4079                                 yyerror("illegal tos value %s", $1);
4080                                 YYERROR;
4081                         }
4082                 }
4083                 ;
4084
4085 sourcetrack     : SOURCETRACK           { $$ = PF_SRCTRACK; }
4086                 | SOURCETRACK GLOBAL    { $$ = PF_SRCTRACK_GLOBAL; }
4087                 | SOURCETRACK RULE      { $$ = PF_SRCTRACK_RULE; }
4088                 ;
4089
4090 statelock       : IFBOUND {
4091                         $$ = PFRULE_IFBOUND;
4092                 }
4093                 | FLOATING {
4094                         $$ = 0;
4095                 }
4096                 ;
4097
4098 keep            : NO STATE                      {
4099                         $$.action = 0;
4100                         $$.options = NULL;
4101                 }
4102                 | KEEP STATE state_opt_spec     {
4103                         $$.action = PF_STATE_NORMAL;
4104                         $$.options = $3;
4105                 }
4106                 | MODULATE STATE state_opt_spec {
4107                         $$.action = PF_STATE_MODULATE;
4108                         $$.options = $3;
4109                 }
4110                 | SYNPROXY STATE state_opt_spec {
4111                         $$.action = PF_STATE_SYNPROXY;
4112                         $$.options = $3;
4113                 }
4114                 ;
4115
4116 flush           : /* empty */                   { $$ = 0; }
4117                 | FLUSH                         { $$ = PF_FLUSH; }
4118                 | FLUSH GLOBAL                  {
4119                         $$ = PF_FLUSH | PF_FLUSH_GLOBAL;
4120                 }
4121                 ;
4122
4123 state_opt_spec  : '(' state_opt_list ')'        { $$ = $2; }
4124                 | /* empty */                   { $$ = NULL; }
4125                 ;
4126
4127 state_opt_list  : state_opt_item                { $$ = $1; }
4128                 | state_opt_list comma state_opt_item {
4129                         $1->tail->next = $3;
4130                         $1->tail = $3;
4131                         $$ = $1;
4132                 }
4133                 ;
4134
4135 state_opt_item  : MAXIMUM NUMBER                {
4136                         if ($2 < 0 || $2 > UINT_MAX) {
4137                                 yyerror("only positive values permitted");
4138                                 YYERROR;
4139                         }
4140                         $$ = calloc(1, sizeof(struct node_state_opt));
4141                         if ($$ == NULL)
4142                                 err(1, "state_opt_item: calloc");
4143                         $$->type = PF_STATE_OPT_MAX;
4144                         $$->data.max_states = $2;
4145                         $$->next = NULL;
4146                         $$->tail = $$;
4147                 }
4148                 | NOSYNC                                {
4149                         $$ = calloc(1, sizeof(struct node_state_opt));
4150                         if ($$ == NULL)
4151                                 err(1, "state_opt_item: calloc");
4152                         $$->type = PF_STATE_OPT_NOSYNC;
4153                         $$->next = NULL;
4154                         $$->tail = $$;
4155                 }
4156                 | MAXSRCSTATES NUMBER                   {
4157                         if ($2 < 0 || $2 > UINT_MAX) {
4158                                 yyerror("only positive values permitted");
4159                                 YYERROR;
4160                         }
4161                         $$ = calloc(1, sizeof(struct node_state_opt));
4162                         if ($$ == NULL)
4163                                 err(1, "state_opt_item: calloc");
4164                         $$->type = PF_STATE_OPT_MAX_SRC_STATES;
4165                         $$->data.max_src_states = $2;
4166                         $$->next = NULL;
4167                         $$->tail = $$;
4168                 }
4169                 | MAXSRCCONN NUMBER                     {
4170                         if ($2 < 0 || $2 > UINT_MAX) {
4171                                 yyerror("only positive values permitted");
4172                                 YYERROR;
4173                         }
4174                         $$ = calloc(1, sizeof(struct node_state_opt));
4175                         if ($$ == NULL)
4176                                 err(1, "state_opt_item: calloc");
4177                         $$->type = PF_STATE_OPT_MAX_SRC_CONN;
4178                         $$->data.max_src_conn = $2;
4179                         $$->next = NULL;
4180                         $$->tail = $$;
4181                 }
4182                 | MAXSRCCONNRATE NUMBER '/' NUMBER      {
4183                         if ($2 < 0 || $2 > UINT_MAX ||
4184                             $4 < 0 || $4 > UINT_MAX) {
4185                                 yyerror("only positive values permitted");
4186                                 YYERROR;
4187                         }
4188                         $$ = calloc(1, sizeof(struct node_state_opt));
4189                         if ($$ == NULL)
4190                                 err(1, "state_opt_item: calloc");
4191                         $$->type = PF_STATE_OPT_MAX_SRC_CONN_RATE;
4192                         $$->data.max_src_conn_rate.limit = $2;
4193                         $$->data.max_src_conn_rate.seconds = $4;
4194                         $$->next = NULL;
4195                         $$->tail = $$;
4196                 }
4197                 | OVERLOAD '<' STRING '>' flush         {
4198                         if (strlen($3) >= PF_TABLE_NAME_SIZE) {
4199                                 yyerror("table name '%s' too long", $3);
4200                                 free($3);
4201                                 YYERROR;
4202                         }
4203                         $$ = calloc(1, sizeof(struct node_state_opt));
4204                         if ($$ == NULL)
4205                                 err(1, "state_opt_item: calloc");
4206                         if (strlcpy($$->data.overload.tblname, $3,
4207                             PF_TABLE_NAME_SIZE) >= PF_TABLE_NAME_SIZE)
4208                                 errx(1, "state_opt_item: strlcpy");
4209                         free($3);
4210                         $$->type = PF_STATE_OPT_OVERLOAD;
4211                         $$->data.overload.flush = $5;
4212                         $$->next = NULL;
4213                         $$->tail = $$;
4214                 }
4215                 | MAXSRCNODES NUMBER                    {
4216                         if ($2 < 0 || $2 > UINT_MAX) {
4217                                 yyerror("only positive values permitted");
4218                                 YYERROR;
4219                         }
4220                         $$ = calloc(1, sizeof(struct node_state_opt));
4221                         if ($$ == NULL)
4222                                 err(1, "state_opt_item: calloc");
4223                         $$->type = PF_STATE_OPT_MAX_SRC_NODES;
4224                         $$->data.max_src_nodes = $2;
4225                         $$->next = NULL;
4226                         $$->tail = $$;
4227                 }
4228                 | sourcetrack {
4229                         $$ = calloc(1, sizeof(struct node_state_opt));
4230                         if ($$ == NULL)
4231                                 err(1, "state_opt_item: calloc");
4232                         $$->type = PF_STATE_OPT_SRCTRACK;
4233                         $$->data.src_track = $1;
4234                         $$->next = NULL;
4235                         $$->tail = $$;
4236                 }
4237                 | statelock {
4238                         $$ = calloc(1, sizeof(struct node_state_opt));
4239                         if ($$ == NULL)
4240                                 err(1, "state_opt_item: calloc");
4241                         $$->type = PF_STATE_OPT_STATELOCK;
4242                         $$->data.statelock = $1;
4243                         $$->next = NULL;
4244                         $$->tail = $$;
4245                 }
4246                 | SLOPPY {
4247                         $$ = calloc(1, sizeof(struct node_state_opt));
4248                         if ($$ == NULL)
4249                                 err(1, "state_opt_item: calloc");
4250                         $$->type = PF_STATE_OPT_SLOPPY;
4251                         $$->next = NULL;
4252                         $$->tail = $$;
4253                 }
4254                 | STRING NUMBER                 {
4255                         int     i;
4256
4257                         if ($2 < 0 || $2 > UINT_MAX) {
4258                                 yyerror("only positive values permitted");
4259                                 YYERROR;
4260                         }
4261                         for (i = 0; pf_timeouts[i].name &&
4262                             strcmp(pf_timeouts[i].name, $1); ++i)
4263                                 ;       /* nothing */
4264                         if (!pf_timeouts[i].name) {
4265                                 yyerror("illegal timeout name %s", $1);
4266                                 free($1);
4267                                 YYERROR;
4268                         }
4269                         if (strchr(pf_timeouts[i].name, '.') == NULL) {
4270                                 yyerror("illegal state timeout %s", $1);
4271                                 free($1);
4272                                 YYERROR;
4273                         }
4274                         free($1);
4275                         $$ = calloc(1, sizeof(struct node_state_opt));
4276                         if ($$ == NULL)
4277                                 err(1, "state_opt_item: calloc");
4278                         $$->type = PF_STATE_OPT_TIMEOUT;
4279                         $$->data.timeout.number = pf_timeouts[i].timeout;
4280                         $$->data.timeout.seconds = $2;
4281                         $$->next = NULL;
4282                         $$->tail = $$;
4283                 }
4284                 ;
4285
4286 label           : LABEL STRING                  {
4287                         $$ = $2;
4288                 }
4289                 ;
4290
4291 etherqname      : QUEUE STRING                          {
4292                         $$.qname = $2;
4293                 }
4294                 | QUEUE '(' STRING ')'                  {
4295                         $$.qname = $3;
4296                 }
4297                 ;
4298
4299 qname           : QUEUE STRING                          {
4300                         $$.qname = $2;
4301                         $$.pqname = NULL;
4302                 }
4303                 | QUEUE '(' STRING ')'                  {
4304                         $$.qname = $3;
4305                         $$.pqname = NULL;
4306                 }
4307                 | QUEUE '(' STRING comma STRING ')'     {
4308                         $$.qname = $3;
4309                         $$.pqname = $5;
4310                 }
4311                 ;
4312
4313 no              : /* empty */                   { $$ = 0; }
4314                 | NO                            { $$ = 1; }
4315                 ;
4316
4317 portstar        : numberstring                  {
4318                         if (parseport($1, &$$, PPORT_RANGE|PPORT_STAR) == -1) {
4319                                 free($1);
4320                                 YYERROR;
4321                         }
4322                         free($1);
4323                 }
4324                 ;
4325
4326 redirspec       : host                          { $$ = $1; }
4327                 | '{' optnl redir_host_list '}' { $$ = $3; }
4328                 ;
4329
4330 redir_host_list : host optnl                    { $$ = $1; }
4331                 | redir_host_list comma host optnl {
4332                         $1->tail->next = $3;
4333                         $1->tail = $3->tail;
4334                         $$ = $1;
4335                 }
4336                 ;
4337
4338 redirpool       : /* empty */                   { $$ = NULL; }
4339                 | ARROW redirspec               {
4340                         $$ = calloc(1, sizeof(struct redirection));
4341                         if ($$ == NULL)
4342                                 err(1, "redirection: calloc");
4343                         $$->host = $2;
4344                         $$->rport.a = $$->rport.b = $$->rport.t = 0;
4345                 }
4346                 | ARROW redirspec PORT portstar {
4347                         $$ = calloc(1, sizeof(struct redirection));
4348                         if ($$ == NULL)
4349                                 err(1, "redirection: calloc");
4350                         $$->host = $2;
4351                         $$->rport = $4;
4352                 }
4353                 ;
4354
4355 hashkey         : /* empty */
4356                 {
4357                         $$ = calloc(1, sizeof(struct pf_poolhashkey));
4358                         if ($$ == NULL)
4359                                 err(1, "hashkey: calloc");
4360                         $$->key32[0] = arc4random();
4361                         $$->key32[1] = arc4random();
4362                         $$->key32[2] = arc4random();
4363                         $$->key32[3] = arc4random();
4364                 }
4365                 | string
4366                 {
4367                         if (!strncmp($1, "0x", 2)) {
4368                                 if (strlen($1) != 34) {
4369                                         free($1);
4370                                         yyerror("hex key must be 128 bits "
4371                                                 "(32 hex digits) long");
4372                                         YYERROR;
4373                                 }
4374                                 $$ = calloc(1, sizeof(struct pf_poolhashkey));
4375                                 if ($$ == NULL)
4376                                         err(1, "hashkey: calloc");
4377
4378                                 if (sscanf($1, "0x%8x%8x%8x%8x",
4379                                     &$$->key32[0], &$$->key32[1],
4380                                     &$$->key32[2], &$$->key32[3]) != 4) {
4381                                         free($$);
4382                                         free($1);
4383                                         yyerror("invalid hex key");
4384                                         YYERROR;
4385                                 }
4386                         } else {
4387                                 MD5_CTX context;
4388
4389                                 $$ = calloc(1, sizeof(struct pf_poolhashkey));
4390                                 if ($$ == NULL)
4391                                         err(1, "hashkey: calloc");
4392                                 MD5Init(&context);
4393                                 MD5Update(&context, (unsigned char *)$1,
4394                                     strlen($1));
4395                                 MD5Final((unsigned char *)$$, &context);
4396                                 HTONL($$->key32[0]);
4397                                 HTONL($$->key32[1]);
4398                                 HTONL($$->key32[2]);
4399                                 HTONL($$->key32[3]);
4400                         }
4401                         free($1);
4402                 }
4403                 ;
4404
4405 pool_opts       :       { bzero(&pool_opts, sizeof pool_opts); }
4406                     pool_opts_l
4407                         { $$ = pool_opts; }
4408                 | /* empty */   {
4409                         bzero(&pool_opts, sizeof pool_opts);
4410                         $$ = pool_opts;
4411                 }
4412                 ;
4413
4414 pool_opts_l     : pool_opts_l pool_opt
4415                 | pool_opt
4416                 ;
4417
4418 pool_opt        : BITMASK       {
4419                         if (pool_opts.type) {
4420                                 yyerror("pool type cannot be redefined");
4421                                 YYERROR;
4422                         }
4423                         pool_opts.type =  PF_POOL_BITMASK;
4424                 }
4425                 | RANDOM        {
4426                         if (pool_opts.type) {
4427                                 yyerror("pool type cannot be redefined");
4428                                 YYERROR;
4429                         }
4430                         pool_opts.type = PF_POOL_RANDOM;
4431                 }
4432                 | SOURCEHASH hashkey {
4433                         if (pool_opts.type) {
4434                                 yyerror("pool type cannot be redefined");
4435                                 YYERROR;
4436                         }
4437                         pool_opts.type = PF_POOL_SRCHASH;
4438                         pool_opts.key = $2;
4439                 }
4440                 | ROUNDROBIN    {
4441                         if (pool_opts.type) {
4442                                 yyerror("pool type cannot be redefined");
4443                                 YYERROR;
4444                         }
4445                         pool_opts.type = PF_POOL_ROUNDROBIN;
4446                 }
4447                 | STATICPORT    {
4448                         if (pool_opts.staticport) {
4449                                 yyerror("static-port cannot be redefined");
4450                                 YYERROR;
4451                         }
4452                         pool_opts.staticport = 1;
4453                 }
4454                 | STICKYADDRESS {
4455                         if (filter_opts.marker & POM_STICKYADDRESS) {
4456                                 yyerror("sticky-address cannot be redefined");
4457                                 YYERROR;
4458                         }
4459                         pool_opts.marker |= POM_STICKYADDRESS;
4460                         pool_opts.opts |= PF_POOL_STICKYADDR;
4461                 }
4462                 | MAPEPORTSET number '/' number '/' number {
4463                         if (pool_opts.mape.offset) {
4464                                 yyerror("map-e-portset cannot be redefined");
4465                                 YYERROR;
4466                         }
4467                         if (pool_opts.type) {
4468                                 yyerror("map-e-portset cannot be used with "
4469                                         "address pools");
4470                                 YYERROR;
4471                         }
4472                         if ($2 <= 0 || $2 >= 16) {
4473                                 yyerror("MAP-E PSID offset must be 1-15");
4474                                 YYERROR;
4475                         }
4476                         if ($4 < 0 || $4 >= 16 || $2 + $4 > 16) {
4477                                 yyerror("Invalid MAP-E PSID length");
4478                                 YYERROR;
4479                         } else if ($4 == 0) {
4480                                 yyerror("PSID Length = 0: this means"
4481                                     " you do not need MAP-E");
4482                                 YYERROR;
4483                         }
4484                         if ($6 < 0 || $6 > 65535) {
4485                                 yyerror("Invalid MAP-E PSID");
4486                                 YYERROR;
4487                         }
4488                         pool_opts.mape.offset = $2;
4489                         pool_opts.mape.psidlen = $4;
4490                         pool_opts.mape.psid = $6;
4491                 }
4492                 ;
4493
4494 redirection     : /* empty */                   { $$ = NULL; }
4495                 | ARROW host                    {
4496                         $$ = calloc(1, sizeof(struct redirection));
4497                         if ($$ == NULL)
4498                                 err(1, "redirection: calloc");
4499                         $$->host = $2;
4500                         $$->rport.a = $$->rport.b = $$->rport.t = 0;
4501                 }
4502                 | ARROW host PORT portstar      {
4503                         $$ = calloc(1, sizeof(struct redirection));
4504                         if ($$ == NULL)
4505                                 err(1, "redirection: calloc");
4506                         $$->host = $2;
4507                         $$->rport = $4;
4508                 }
4509                 ;
4510
4511 natpasslog      : /* empty */   { $$.b1 = $$.b2 = 0; $$.w2 = 0; }
4512                 | PASS          { $$.b1 = 1; $$.b2 = 0; $$.w2 = 0; }
4513                 | PASS log      { $$.b1 = 1; $$.b2 = $2.log; $$.w2 = $2.logif; }
4514                 | log           { $$.b1 = 0; $$.b2 = $1.log; $$.w2 = $1.logif; }
4515                 ;
4516
4517 nataction       : no NAT natpasslog {
4518                         if ($1 && $3.b1) {
4519                                 yyerror("\"pass\" not valid with \"no\"");
4520                                 YYERROR;
4521                         }
4522                         if ($1)
4523                                 $$.b1 = PF_NONAT;
4524                         else
4525                                 $$.b1 = PF_NAT;
4526                         $$.b2 = $3.b1;
4527                         $$.w = $3.b2;
4528                         $$.w2 = $3.w2;
4529                 }
4530                 | no RDR natpasslog {
4531                         if ($1 && $3.b1) {
4532                                 yyerror("\"pass\" not valid with \"no\"");
4533                                 YYERROR;
4534                         }
4535                         if ($1)
4536                                 $$.b1 = PF_NORDR;
4537                         else
4538                                 $$.b1 = PF_RDR;
4539                         $$.b2 = $3.b1;
4540                         $$.w = $3.b2;
4541                         $$.w2 = $3.w2;
4542                 }
4543                 ;
4544
4545 natrule         : nataction interface af proto fromto tag tagged rtable
4546                     redirpool pool_opts
4547                 {
4548                         struct pfctl_rule       r;
4549
4550                         if (check_rulestate(PFCTL_STATE_NAT))
4551                                 YYERROR;
4552
4553                         memset(&r, 0, sizeof(r));
4554
4555                         r.action = $1.b1;
4556                         r.natpass = $1.b2;
4557                         r.log = $1.w;
4558                         r.logif = $1.w2;
4559                         r.af = $3;
4560
4561                         if (!r.af) {
4562                                 if ($5.src.host && $5.src.host->af &&
4563                                     !$5.src.host->ifindex)
4564                                         r.af = $5.src.host->af;
4565                                 else if ($5.dst.host && $5.dst.host->af &&
4566                                     !$5.dst.host->ifindex)
4567                                         r.af = $5.dst.host->af;
4568                         }
4569
4570                         if ($6 != NULL)
4571                                 if (strlcpy(r.tagname, $6, PF_TAG_NAME_SIZE) >=
4572                                     PF_TAG_NAME_SIZE) {
4573                                         yyerror("tag too long, max %u chars",
4574                                             PF_TAG_NAME_SIZE - 1);
4575                                         YYERROR;
4576                                 }
4577
4578                         if ($7.name)
4579                                 if (strlcpy(r.match_tagname, $7.name,
4580                                     PF_TAG_NAME_SIZE) >= PF_TAG_NAME_SIZE) {
4581                                         yyerror("tag too long, max %u chars",
4582                                             PF_TAG_NAME_SIZE - 1);
4583                                         YYERROR;
4584                                 }
4585                         r.match_tag_not = $7.neg;
4586                         r.rtableid = $8;
4587
4588                         if (r.action == PF_NONAT || r.action == PF_NORDR) {
4589                                 if ($9 != NULL) {
4590                                         yyerror("translation rule with 'no' "
4591                                             "does not need '->'");
4592                                         YYERROR;
4593                                 }
4594                         } else {
4595                                 if ($9 == NULL || $9->host == NULL) {
4596                                         yyerror("translation rule requires '-> "
4597                                             "address'");
4598                                         YYERROR;
4599                                 }
4600                                 if (!r.af && ! $9->host->ifindex)
4601                                         r.af = $9->host->af;
4602
4603                                 remove_invalid_hosts(&$9->host, &r.af);
4604                                 if (invalid_redirect($9->host, r.af))
4605                                         YYERROR;
4606                                 if (check_netmask($9->host, r.af))
4607                                         YYERROR;
4608
4609                                 r.rpool.proxy_port[0] = ntohs($9->rport.a);
4610
4611                                 switch (r.action) {
4612                                 case PF_RDR:
4613                                         if (!$9->rport.b && $9->rport.t &&
4614                                             $5.dst.port != NULL) {
4615                                                 r.rpool.proxy_port[1] =
4616                                                     ntohs($9->rport.a) +
4617                                                     (ntohs(
4618                                                     $5.dst.port->port[1]) -
4619                                                     ntohs(
4620                                                     $5.dst.port->port[0]));
4621                                         } else
4622                                                 r.rpool.proxy_port[1] =
4623                                                     ntohs($9->rport.b);
4624                                         break;
4625                                 case PF_NAT:
4626                                         r.rpool.proxy_port[1] =
4627                                             ntohs($9->rport.b);
4628                                         if (!r.rpool.proxy_port[0] &&
4629                                             !r.rpool.proxy_port[1]) {
4630                                                 r.rpool.proxy_port[0] =
4631                                                     PF_NAT_PROXY_PORT_LOW;
4632                                                 r.rpool.proxy_port[1] =
4633                                                     PF_NAT_PROXY_PORT_HIGH;
4634                                         } else if (!r.rpool.proxy_port[1])
4635                                                 r.rpool.proxy_port[1] =
4636                                                     r.rpool.proxy_port[0];
4637                                         break;
4638                                 default:
4639                                         break;
4640                                 }
4641
4642                                 r.rpool.opts = $10.type;
4643                                 if ((r.rpool.opts & PF_POOL_TYPEMASK) ==
4644                                     PF_POOL_NONE && ($9->host->next != NULL ||
4645                                     $9->host->addr.type == PF_ADDR_TABLE ||
4646                                     DYNIF_MULTIADDR($9->host->addr)))
4647                                         r.rpool.opts = PF_POOL_ROUNDROBIN;
4648                                 if ((r.rpool.opts & PF_POOL_TYPEMASK) !=
4649                                     PF_POOL_ROUNDROBIN &&
4650                                     disallow_table($9->host, "tables are only "
4651                                     "supported in round-robin redirection "
4652                                     "pools"))
4653                                         YYERROR;
4654                                 if ((r.rpool.opts & PF_POOL_TYPEMASK) !=
4655                                     PF_POOL_ROUNDROBIN &&
4656                                     disallow_alias($9->host, "interface (%s) "
4657                                     "is only supported in round-robin "
4658                                     "redirection pools"))
4659                                         YYERROR;
4660                                 if ($9->host->next != NULL) {
4661                                         if ((r.rpool.opts & PF_POOL_TYPEMASK) !=
4662                                             PF_POOL_ROUNDROBIN) {
4663                                                 yyerror("only round-robin "
4664                                                     "valid for multiple "
4665                                                     "redirection addresses");
4666                                                 YYERROR;
4667                                         }
4668                                 }
4669                         }
4670
4671                         if ($10.key != NULL)
4672                                 memcpy(&r.rpool.key, $10.key,
4673                                     sizeof(struct pf_poolhashkey));
4674
4675                          if ($10.opts)
4676                                 r.rpool.opts |= $10.opts;
4677
4678                         if ($10.staticport) {
4679                                 if (r.action != PF_NAT) {
4680                                         yyerror("the 'static-port' option is "
4681                                             "only valid with nat rules");
4682                                         YYERROR;
4683                                 }
4684                                 if (r.rpool.proxy_port[0] !=
4685                                     PF_NAT_PROXY_PORT_LOW &&
4686                                     r.rpool.proxy_port[1] !=
4687                                     PF_NAT_PROXY_PORT_HIGH) {
4688                                         yyerror("the 'static-port' option can't"
4689                                             " be used when specifying a port"
4690                                             " range");
4691                                         YYERROR;
4692                                 }
4693                                 r.rpool.proxy_port[0] = 0;
4694                                 r.rpool.proxy_port[1] = 0;
4695                         }
4696
4697                         if ($10.mape.offset) {
4698                                 if (r.action != PF_NAT) {
4699                                         yyerror("the 'map-e-portset' option is"
4700                                             " only valid with nat rules");
4701                                         YYERROR;
4702                                 }
4703                                 if ($10.staticport) {
4704                                         yyerror("the 'map-e-portset' option"
4705                                             " can't be used 'static-port'");
4706                                         YYERROR;
4707                                 }
4708                                 if (r.rpool.proxy_port[0] !=
4709                                     PF_NAT_PROXY_PORT_LOW &&
4710                                     r.rpool.proxy_port[1] !=
4711                                     PF_NAT_PROXY_PORT_HIGH) {
4712                                         yyerror("the 'map-e-portset' option"
4713                                             " can't be used when specifying"
4714                                             " a port range");
4715                                         YYERROR;
4716                                 }
4717                                 r.rpool.mape = $10.mape;
4718                         }
4719
4720                         expand_rule(&r, $2, $9 == NULL ? NULL : $9->host, $4,
4721                             $5.src_os, $5.src.host, $5.src.port, $5.dst.host,
4722                             $5.dst.port, 0, 0, 0, "");
4723                         free($9);
4724                 }
4725                 ;
4726
4727 binatrule       : no BINAT natpasslog interface af proto FROM ipspec toipspec tag
4728                     tagged rtable redirection
4729                 {
4730                         struct pfctl_rule       binat;
4731                         struct pf_pooladdr      *pa;
4732
4733                         if (check_rulestate(PFCTL_STATE_NAT))
4734                                 YYERROR;
4735                         if (disallow_urpf_failed($9, "\"urpf-failed\" is not "
4736                             "permitted as a binat destination"))
4737                                 YYERROR;
4738
4739                         memset(&binat, 0, sizeof(binat));
4740
4741                         if ($1 && $3.b1) {
4742                                 yyerror("\"pass\" not valid with \"no\"");
4743                                 YYERROR;
4744                         }
4745                         if ($1)
4746                                 binat.action = PF_NOBINAT;
4747                         else
4748                                 binat.action = PF_BINAT;
4749                         binat.natpass = $3.b1;
4750                         binat.log = $3.b2;
4751                         binat.logif = $3.w2;
4752                         binat.af = $5;
4753                         if (!binat.af && $8 != NULL && $8->af)
4754                                 binat.af = $8->af;
4755                         if (!binat.af && $9 != NULL && $9->af)
4756                                 binat.af = $9->af;
4757
4758                         if (!binat.af && $13 != NULL && $13->host)
4759                                 binat.af = $13->host->af;
4760                         if (!binat.af) {
4761                                 yyerror("address family (inet/inet6) "
4762                                     "undefined");
4763                                 YYERROR;
4764                         }
4765
4766                         if ($4 != NULL) {
4767                                 memcpy(binat.ifname, $4->ifname,
4768                                     sizeof(binat.ifname));
4769                                 binat.ifnot = $4->not;
4770                                 free($4);
4771                         }
4772
4773                         if ($10 != NULL)
4774                                 if (strlcpy(binat.tagname, $10,
4775                                     PF_TAG_NAME_SIZE) >= PF_TAG_NAME_SIZE) {
4776                                         yyerror("tag too long, max %u chars",
4777                                             PF_TAG_NAME_SIZE - 1);
4778                                         YYERROR;
4779                                 }
4780                         if ($11.name)
4781                                 if (strlcpy(binat.match_tagname, $11.name,
4782                                     PF_TAG_NAME_SIZE) >= PF_TAG_NAME_SIZE) {
4783                                         yyerror("tag too long, max %u chars",
4784                                             PF_TAG_NAME_SIZE - 1);
4785                                         YYERROR;
4786                                 }
4787                         binat.match_tag_not = $11.neg;
4788                         binat.rtableid = $12;
4789
4790                         if ($6 != NULL) {
4791                                 binat.proto = $6->proto;
4792                                 free($6);
4793                         }
4794
4795                         if ($8 != NULL && disallow_table($8, "invalid use of "
4796                             "table <%s> as the source address of a binat rule"))
4797                                 YYERROR;
4798                         if ($8 != NULL && disallow_alias($8, "invalid use of "
4799                             "interface (%s) as the source address of a binat "
4800                             "rule"))
4801                                 YYERROR;
4802                         if ($13 != NULL && $13->host != NULL && disallow_table(
4803                             $13->host, "invalid use of table <%s> as the "
4804                             "redirect address of a binat rule"))
4805                                 YYERROR;
4806                         if ($13 != NULL && $13->host != NULL && disallow_alias(
4807                             $13->host, "invalid use of interface (%s) as the "
4808                             "redirect address of a binat rule"))
4809                                 YYERROR;
4810
4811                         if ($8 != NULL) {
4812                                 if ($8->next) {
4813                                         yyerror("multiple binat ip addresses");
4814                                         YYERROR;
4815                                 }
4816                                 if ($8->addr.type == PF_ADDR_DYNIFTL)
4817                                         $8->af = binat.af;
4818                                 if ($8->af != binat.af) {
4819                                         yyerror("binat ip versions must match");
4820                                         YYERROR;
4821                                 }
4822                                 if (check_netmask($8, binat.af))
4823                                         YYERROR;
4824                                 memcpy(&binat.src.addr, &$8->addr,
4825                                     sizeof(binat.src.addr));
4826                                 free($8);
4827                         }
4828                         if ($9 != NULL) {
4829                                 if ($9->next) {
4830                                         yyerror("multiple binat ip addresses");
4831                                         YYERROR;
4832                                 }
4833                                 if ($9->af != binat.af && $9->af) {
4834                                         yyerror("binat ip versions must match");
4835                                         YYERROR;
4836                                 }
4837                                 if (check_netmask($9, binat.af))
4838                                         YYERROR;
4839                                 memcpy(&binat.dst.addr, &$9->addr,
4840                                     sizeof(binat.dst.addr));
4841                                 binat.dst.neg = $9->not;
4842                                 free($9);
4843                         }
4844
4845                         if (binat.action == PF_NOBINAT) {
4846                                 if ($13 != NULL) {
4847                                         yyerror("'no binat' rule does not need"
4848                                             " '->'");
4849                                         YYERROR;
4850                                 }
4851                         } else {
4852                                 if ($13 == NULL || $13->host == NULL) {
4853                                         yyerror("'binat' rule requires"
4854                                             " '-> address'");
4855                                         YYERROR;
4856                                 }
4857
4858                                 remove_invalid_hosts(&$13->host, &binat.af);
4859                                 if (invalid_redirect($13->host, binat.af))
4860                                         YYERROR;
4861                                 if ($13->host->next != NULL) {
4862                                         yyerror("binat rule must redirect to "
4863                                             "a single address");
4864                                         YYERROR;
4865                                 }
4866                                 if (check_netmask($13->host, binat.af))
4867                                         YYERROR;
4868
4869                                 if (!PF_AZERO(&binat.src.addr.v.a.mask,
4870                                     binat.af) &&
4871                                     !PF_AEQ(&binat.src.addr.v.a.mask,
4872                                     &$13->host->addr.v.a.mask, binat.af)) {
4873                                         yyerror("'binat' source mask and "
4874                                             "redirect mask must be the same");
4875                                         YYERROR;
4876                                 }
4877
4878                                 TAILQ_INIT(&binat.rpool.list);
4879                                 pa = calloc(1, sizeof(struct pf_pooladdr));
4880                                 if (pa == NULL)
4881                                         err(1, "binat: calloc");
4882                                 pa->addr = $13->host->addr;
4883                                 pa->ifname[0] = 0;
4884                                 TAILQ_INSERT_TAIL(&binat.rpool.list,
4885                                     pa, entries);
4886
4887                                 free($13);
4888                         }
4889
4890                         pfctl_append_rule(pf, &binat, "");
4891                 }
4892                 ;
4893
4894 tag             : /* empty */           { $$ = NULL; }
4895                 | TAG STRING            { $$ = $2; }
4896                 ;
4897
4898 tagged          : /* empty */           { $$.neg = 0; $$.name = NULL; }
4899                 | not TAGGED string     { $$.neg = $1; $$.name = $3; }
4900                 ;
4901
4902 rtable          : /* empty */           { $$ = -1; }
4903                 | RTABLE NUMBER         {
4904                         if ($2 < 0 || $2 > rt_tableid_max()) {
4905                                 yyerror("invalid rtable id");
4906                                 YYERROR;
4907                         }
4908                         $$ = $2;
4909                 }
4910                 ;
4911
4912 route_host      : STRING                        {
4913                         $$ = calloc(1, sizeof(struct node_host));
4914                         if ($$ == NULL)
4915                                 err(1, "route_host: calloc");
4916                         if (strlen($1) >= IFNAMSIZ) {
4917                                 yyerror("interface name too long");
4918                                 YYERROR;
4919                         }
4920                         $$->ifname = strdup($1);
4921                         set_ipmask($$, 128);
4922                         $$->next = NULL;
4923                         $$->tail = $$;
4924                 }
4925                 | '(' STRING host ')'           {
4926                         struct node_host *n;
4927
4928                         $$ = $3;
4929                         for (n = $3; n != NULL; n = n->next) {
4930                                 if (strlen($2) >= IFNAMSIZ) {
4931                                         yyerror("interface name too long");
4932                                         YYERROR;
4933                                 }
4934                                 n->ifname = strdup($2);
4935                         }
4936                 }
4937                 ;
4938
4939 route_host_list : route_host optnl                      { $$ = $1; }
4940                 | route_host_list comma route_host optnl {
4941                         if ($1->af == 0)
4942                                 $1->af = $3->af;
4943                         if ($1->af != $3->af) {
4944                                 yyerror("all pool addresses must be in the "
4945                                     "same address family");
4946                                 YYERROR;
4947                         }
4948                         $1->tail->next = $3;
4949                         $1->tail = $3->tail;
4950                         $$ = $1;
4951                 }
4952                 ;
4953
4954 routespec       : route_host                    { $$ = $1; }
4955                 | '{' optnl route_host_list '}' { $$ = $3; }
4956                 ;
4957
4958 route           : /* empty */                   {
4959                         $$.host = NULL;
4960                         $$.rt = 0;
4961                         $$.pool_opts = 0;
4962                 }
4963                 | FASTROUTE {
4964                         /* backwards-compat */
4965                         $$.host = NULL;
4966                         $$.rt = 0;
4967                         $$.pool_opts = 0;
4968                 }
4969                 | ROUTETO routespec pool_opts {
4970                         $$.host = $2;
4971                         $$.rt = PF_ROUTETO;
4972                         $$.pool_opts = $3.type | $3.opts;
4973                         if ($3.key != NULL)
4974                                 $$.key = $3.key;
4975                 }
4976                 | REPLYTO routespec pool_opts {
4977                         $$.host = $2;
4978                         $$.rt = PF_REPLYTO;
4979                         $$.pool_opts = $3.type | $3.opts;
4980                         if ($3.key != NULL)
4981                                 $$.key = $3.key;
4982                 }
4983                 | DUPTO routespec pool_opts {
4984                         $$.host = $2;
4985                         $$.rt = PF_DUPTO;
4986                         $$.pool_opts = $3.type | $3.opts;
4987                         if ($3.key != NULL)
4988                                 $$.key = $3.key;
4989                 }
4990                 ;
4991
4992 timeout_spec    : STRING NUMBER
4993                 {
4994                         if (check_rulestate(PFCTL_STATE_OPTION)) {
4995                                 free($1);
4996                                 YYERROR;
4997                         }
4998                         if ($2 < 0 || $2 > UINT_MAX) {
4999                                 yyerror("only positive values permitted");
5000                                 YYERROR;
5001                         }
5002                         if (pfctl_set_timeout(pf, $1, $2, 0) != 0) {
5003                                 yyerror("unknown timeout %s", $1);
5004                                 free($1);
5005                                 YYERROR;
5006                         }
5007                         free($1);
5008                 }
5009                 | INTERVAL NUMBER               {
5010                         if (check_rulestate(PFCTL_STATE_OPTION))
5011                                 YYERROR;
5012                         if ($2 < 0 || $2 > UINT_MAX) {
5013                                 yyerror("only positive values permitted");
5014                                 YYERROR;
5015                         }
5016                         if (pfctl_set_timeout(pf, "interval", $2, 0) != 0)
5017                                 YYERROR;
5018                 }
5019                 ;
5020
5021 timeout_list    : timeout_list comma timeout_spec optnl
5022                 | timeout_spec optnl
5023                 ;
5024
5025 limit_spec      : STRING NUMBER
5026                 {
5027                         if (check_rulestate(PFCTL_STATE_OPTION)) {
5028                                 free($1);
5029                                 YYERROR;
5030                         }
5031                         if ($2 < 0 || $2 > UINT_MAX) {
5032                                 yyerror("only positive values permitted");
5033                                 YYERROR;
5034                         }
5035                         if (pfctl_set_limit(pf, $1, $2) != 0) {
5036                                 yyerror("unable to set limit %s %u", $1, $2);
5037                                 free($1);
5038                                 YYERROR;
5039                         }
5040                         free($1);
5041                 }
5042                 ;
5043
5044 limit_list      : limit_list comma limit_spec optnl
5045                 | limit_spec optnl
5046                 ;
5047
5048 comma           : ','
5049                 | /* empty */
5050                 ;
5051
5052 yesno           : NO                    { $$ = 0; }
5053                 | STRING                {
5054                         if (!strcmp($1, "yes"))
5055                                 $$ = 1;
5056                         else {
5057                                 yyerror("invalid value '%s', expected 'yes' "
5058                                     "or 'no'", $1);
5059                                 free($1);
5060                                 YYERROR;
5061                         }
5062                         free($1);
5063                 }
5064                 ;
5065
5066 unaryop         : '='           { $$ = PF_OP_EQ; }
5067                 | '!' '='       { $$ = PF_OP_NE; }
5068                 | '<' '='       { $$ = PF_OP_LE; }
5069                 | '<'           { $$ = PF_OP_LT; }
5070                 | '>' '='       { $$ = PF_OP_GE; }
5071                 | '>'           { $$ = PF_OP_GT; }
5072                 ;
5073
5074 %%
5075
5076 int
5077 yyerror(const char *fmt, ...)
5078 {
5079         va_list          ap;
5080
5081         file->errors++;
5082         va_start(ap, fmt);
5083         fprintf(stderr, "%s:%d: ", file->name, yylval.lineno);
5084         vfprintf(stderr, fmt, ap);
5085         fprintf(stderr, "\n");
5086         va_end(ap);
5087         return (0);
5088 }
5089
5090 int
5091 disallow_table(struct node_host *h, const char *fmt)
5092 {
5093         for (; h != NULL; h = h->next)
5094                 if (h->addr.type == PF_ADDR_TABLE) {
5095                         yyerror(fmt, h->addr.v.tblname);
5096                         return (1);
5097                 }
5098         return (0);
5099 }
5100
5101 int
5102 disallow_urpf_failed(struct node_host *h, const char *fmt)
5103 {
5104         for (; h != NULL; h = h->next)
5105                 if (h->addr.type == PF_ADDR_URPFFAILED) {
5106                         yyerror(fmt);
5107                         return (1);
5108                 }
5109         return (0);
5110 }
5111
5112 int
5113 disallow_alias(struct node_host *h, const char *fmt)
5114 {
5115         for (; h != NULL; h = h->next)
5116                 if (DYNIF_MULTIADDR(h->addr)) {
5117                         yyerror(fmt, h->addr.v.tblname);
5118                         return (1);
5119                 }
5120         return (0);
5121 }
5122
5123 int
5124 rule_consistent(struct pfctl_rule *r, int anchor_call)
5125 {
5126         int     problems = 0;
5127
5128         switch (r->action) {
5129         case PF_PASS:
5130         case PF_DROP:
5131         case PF_SCRUB:
5132         case PF_NOSCRUB:
5133                 problems = filter_consistent(r, anchor_call);
5134                 break;
5135         case PF_NAT:
5136         case PF_NONAT:
5137                 problems = nat_consistent(r);
5138                 break;
5139         case PF_RDR:
5140         case PF_NORDR:
5141                 problems = rdr_consistent(r);
5142                 break;
5143         case PF_BINAT:
5144         case PF_NOBINAT:
5145         default:
5146                 break;
5147         }
5148         return (problems);
5149 }
5150
5151 int
5152 filter_consistent(struct pfctl_rule *r, int anchor_call)
5153 {
5154         int     problems = 0;
5155
5156         if (r->proto != IPPROTO_TCP && r->proto != IPPROTO_UDP &&
5157             (r->src.port_op || r->dst.port_op)) {
5158                 yyerror("port only applies to tcp/udp");
5159                 problems++;
5160         }
5161         if (r->proto != IPPROTO_ICMP && r->proto != IPPROTO_ICMPV6 &&
5162             (r->type || r->code)) {
5163                 yyerror("icmp-type/code only applies to icmp");
5164                 problems++;
5165         }
5166         if (!r->af && (r->type || r->code)) {
5167                 yyerror("must indicate address family with icmp-type/code");
5168                 problems++;
5169         }
5170         if (r->overload_tblname[0] &&
5171             r->max_src_conn == 0 && r->max_src_conn_rate.seconds == 0) {
5172                 yyerror("'overload' requires 'max-src-conn' "
5173                     "or 'max-src-conn-rate'");
5174                 problems++;
5175         }
5176         if ((r->proto == IPPROTO_ICMP && r->af == AF_INET6) ||
5177             (r->proto == IPPROTO_ICMPV6 && r->af == AF_INET)) {
5178                 yyerror("proto %s doesn't match address family %s",
5179                     r->proto == IPPROTO_ICMP ? "icmp" : "icmp6",
5180                     r->af == AF_INET ? "inet" : "inet6");
5181                 problems++;
5182         }
5183         if (r->allow_opts && r->action != PF_PASS) {
5184                 yyerror("allow-opts can only be specified for pass rules");
5185                 problems++;
5186         }
5187         if (r->rule_flag & PFRULE_FRAGMENT && (r->src.port_op ||
5188             r->dst.port_op || r->flagset || r->type || r->code)) {
5189                 yyerror("fragments can be filtered only on IP header fields");
5190                 problems++;
5191         }
5192         if (r->rule_flag & PFRULE_RETURNRST && r->proto != IPPROTO_TCP) {
5193                 yyerror("return-rst can only be applied to TCP rules");
5194                 problems++;
5195         }
5196         if (r->max_src_nodes && !(r->rule_flag & PFRULE_RULESRCTRACK)) {
5197                 yyerror("max-src-nodes requires 'source-track rule'");
5198                 problems++;
5199         }
5200         if (r->action == PF_DROP && r->keep_state) {
5201                 yyerror("keep state on block rules doesn't make sense");
5202                 problems++;
5203         }
5204         if (r->rule_flag & PFRULE_STATESLOPPY &&
5205             (r->keep_state == PF_STATE_MODULATE ||
5206             r->keep_state == PF_STATE_SYNPROXY)) {
5207                 yyerror("sloppy state matching cannot be used with "
5208                     "synproxy state or modulate state");
5209                 problems++;
5210         }
5211         return (-problems);
5212 }
5213
5214 int
5215 nat_consistent(struct pfctl_rule *r)
5216 {
5217         return (0);     /* yeah! */
5218 }
5219
5220 int
5221 rdr_consistent(struct pfctl_rule *r)
5222 {
5223         int                      problems = 0;
5224
5225         if (r->proto != IPPROTO_TCP && r->proto != IPPROTO_UDP) {
5226                 if (r->src.port_op) {
5227                         yyerror("src port only applies to tcp/udp");
5228                         problems++;
5229                 }
5230                 if (r->dst.port_op) {
5231                         yyerror("dst port only applies to tcp/udp");
5232                         problems++;
5233                 }
5234                 if (r->rpool.proxy_port[0]) {
5235                         yyerror("rpool port only applies to tcp/udp");
5236                         problems++;
5237                 }
5238         }
5239         if (r->dst.port_op &&
5240             r->dst.port_op != PF_OP_EQ && r->dst.port_op != PF_OP_RRG) {
5241                 yyerror("invalid port operator for rdr destination port");
5242                 problems++;
5243         }
5244         return (-problems);
5245 }
5246
5247 int
5248 process_tabledef(char *name, struct table_opts *opts)
5249 {
5250         struct pfr_buffer        ab;
5251         struct node_tinit       *ti;
5252         unsigned long            maxcount;
5253         size_t                   s = sizeof(maxcount);
5254
5255         bzero(&ab, sizeof(ab));
5256         ab.pfrb_type = PFRB_ADDRS;
5257         SIMPLEQ_FOREACH(ti, &opts->init_nodes, entries) {
5258                 if (ti->file)
5259                         if (pfr_buf_load(&ab, ti->file, 0, append_addr)) {
5260                                 if (errno)
5261                                         yyerror("cannot load \"%s\": %s",
5262                                             ti->file, strerror(errno));
5263                                 else
5264                                         yyerror("file \"%s\" contains bad data",
5265                                             ti->file);
5266                                 goto _error;
5267                         }
5268                 if (ti->host)
5269                         if (append_addr_host(&ab, ti->host, 0, 0)) {
5270                                 yyerror("cannot create address buffer: %s",
5271                                     strerror(errno));
5272                                 goto _error;
5273                         }
5274         }
5275         if (pf->opts & PF_OPT_VERBOSE)
5276                 print_tabledef(name, opts->flags, opts->init_addr,
5277                     &opts->init_nodes);
5278         if (!(pf->opts & PF_OPT_NOACTION) &&
5279             pfctl_define_table(name, opts->flags, opts->init_addr,
5280             pf->anchor->name, &ab, pf->anchor->ruleset.tticket)) {
5281
5282                 if (sysctlbyname("net.pf.request_maxcount", &maxcount, &s,
5283                     NULL, 0) == -1)
5284                         maxcount = 65535;
5285
5286                 if (ab.pfrb_size > maxcount)
5287                         yyerror("cannot define table %s: too many elements.\n"
5288                             "Consider increasing net.pf.request_maxcount.",
5289                             name);
5290                 else
5291                         yyerror("cannot define table %s: %s", name,
5292                             pfr_strerror(errno));
5293
5294                 goto _error;
5295         }
5296         pf->tdirty = 1;
5297         pfr_buf_clear(&ab);
5298         return (0);
5299 _error:
5300         pfr_buf_clear(&ab);
5301         return (-1);
5302 }
5303
5304 struct keywords {
5305         const char      *k_name;
5306         int              k_val;
5307 };
5308
5309 /* macro gore, but you should've seen the prior indentation nightmare... */
5310
5311 #define FREE_LIST(T,r) \
5312         do { \
5313                 T *p, *node = r; \
5314                 while (node != NULL) { \
5315                         p = node; \
5316                         node = node->next; \
5317                         free(p); \
5318                 } \
5319         } while (0)
5320
5321 #define LOOP_THROUGH(T,n,r,C) \
5322         do { \
5323                 T *n; \
5324                 if (r == NULL) { \
5325                         r = calloc(1, sizeof(T)); \
5326                         if (r == NULL) \
5327                                 err(1, "LOOP: calloc"); \
5328                         r->next = NULL; \
5329                 } \
5330                 n = r; \
5331                 while (n != NULL) { \
5332                         do { \
5333                                 C; \
5334                         } while (0); \
5335                         n = n->next; \
5336                 } \
5337         } while (0)
5338
5339 void
5340 expand_label_str(char *label, size_t len, const char *srch, const char *repl)
5341 {
5342         char *tmp;
5343         char *p, *q;
5344
5345         if ((tmp = calloc(1, len)) == NULL)
5346                 err(1, "expand_label_str: calloc");
5347         p = q = label;
5348         while ((q = strstr(p, srch)) != NULL) {
5349                 *q = '\0';
5350                 if ((strlcat(tmp, p, len) >= len) ||
5351                     (strlcat(tmp, repl, len) >= len))
5352                         errx(1, "expand_label: label too long");
5353                 q += strlen(srch);
5354                 p = q;
5355         }
5356         if (strlcat(tmp, p, len) >= len)
5357                 errx(1, "expand_label: label too long");
5358         strlcpy(label, tmp, len);       /* always fits */
5359         free(tmp);
5360 }
5361
5362 void
5363 expand_label_if(const char *name, char *label, size_t len, const char *ifname)
5364 {
5365         if (strstr(label, name) != NULL) {
5366                 if (!*ifname)
5367                         expand_label_str(label, len, name, "any");
5368                 else
5369                         expand_label_str(label, len, name, ifname);
5370         }
5371 }
5372
5373 void
5374 expand_label_addr(const char *name, char *label, size_t len, sa_family_t af,
5375     struct pf_rule_addr *addr)
5376 {
5377         char tmp[64], tmp_not[66];
5378
5379         if (strstr(label, name) != NULL) {
5380                 switch (addr->addr.type) {
5381                 case PF_ADDR_DYNIFTL:
5382                         snprintf(tmp, sizeof(tmp), "(%s)", addr->addr.v.ifname);
5383                         break;
5384                 case PF_ADDR_TABLE:
5385                         snprintf(tmp, sizeof(tmp), "<%s>", addr->addr.v.tblname);
5386                         break;
5387                 case PF_ADDR_NOROUTE:
5388                         snprintf(tmp, sizeof(tmp), "no-route");
5389                         break;
5390                 case PF_ADDR_URPFFAILED:
5391                         snprintf(tmp, sizeof(tmp), "urpf-failed");
5392                         break;
5393                 case PF_ADDR_ADDRMASK:
5394                         if (!af || (PF_AZERO(&addr->addr.v.a.addr, af) &&
5395                             PF_AZERO(&addr->addr.v.a.mask, af)))
5396                                 snprintf(tmp, sizeof(tmp), "any");
5397                         else {
5398                                 char    a[48];
5399                                 int     bits;
5400
5401                                 if (inet_ntop(af, &addr->addr.v.a.addr, a,
5402                                     sizeof(a)) == NULL)
5403                                         snprintf(tmp, sizeof(tmp), "?");
5404                                 else {
5405                                         bits = unmask(&addr->addr.v.a.mask, af);
5406                                         if ((af == AF_INET && bits < 32) ||
5407                                             (af == AF_INET6 && bits < 128))
5408                                                 snprintf(tmp, sizeof(tmp),
5409                                                     "%s/%d", a, bits);
5410                                         else
5411                                                 snprintf(tmp, sizeof(tmp),
5412                                                     "%s", a);
5413                                 }
5414                         }
5415                         break;
5416                 default:
5417                         snprintf(tmp, sizeof(tmp), "?");
5418                         break;
5419                 }
5420
5421                 if (addr->neg) {
5422                         snprintf(tmp_not, sizeof(tmp_not), "! %s", tmp);
5423                         expand_label_str(label, len, name, tmp_not);
5424                 } else
5425                         expand_label_str(label, len, name, tmp);
5426         }
5427 }
5428
5429 void
5430 expand_label_port(const char *name, char *label, size_t len,
5431     struct pf_rule_addr *addr)
5432 {
5433         char     a1[6], a2[6], op[13] = "";
5434
5435         if (strstr(label, name) != NULL) {
5436                 snprintf(a1, sizeof(a1), "%u", ntohs(addr->port[0]));
5437                 snprintf(a2, sizeof(a2), "%u", ntohs(addr->port[1]));
5438                 if (!addr->port_op)
5439                         ;
5440                 else if (addr->port_op == PF_OP_IRG)
5441                         snprintf(op, sizeof(op), "%s><%s", a1, a2);
5442                 else if (addr->port_op == PF_OP_XRG)
5443                         snprintf(op, sizeof(op), "%s<>%s", a1, a2);
5444                 else if (addr->port_op == PF_OP_EQ)
5445                         snprintf(op, sizeof(op), "%s", a1);
5446                 else if (addr->port_op == PF_OP_NE)
5447                         snprintf(op, sizeof(op), "!=%s", a1);
5448                 else if (addr->port_op == PF_OP_LT)
5449                         snprintf(op, sizeof(op), "<%s", a1);
5450                 else if (addr->port_op == PF_OP_LE)
5451                         snprintf(op, sizeof(op), "<=%s", a1);
5452                 else if (addr->port_op == PF_OP_GT)
5453                         snprintf(op, sizeof(op), ">%s", a1);
5454                 else if (addr->port_op == PF_OP_GE)
5455                         snprintf(op, sizeof(op), ">=%s", a1);
5456                 expand_label_str(label, len, name, op);
5457         }
5458 }
5459
5460 void
5461 expand_label_proto(const char *name, char *label, size_t len, u_int8_t proto)
5462 {
5463         const char *protoname;
5464         char n[4];
5465
5466         if (strstr(label, name) != NULL) {
5467                 protoname = pfctl_proto2name(proto);
5468                 if (protoname != NULL)
5469                         expand_label_str(label, len, name, protoname);
5470                 else {
5471                         snprintf(n, sizeof(n), "%u", proto);
5472                         expand_label_str(label, len, name, n);
5473                 }
5474         }
5475 }
5476
5477 void
5478 expand_label_nr(const char *name, char *label, size_t len,
5479     struct pfctl_rule *r)
5480 {
5481         char n[11];
5482
5483         if (strstr(label, name) != NULL) {
5484                 snprintf(n, sizeof(n), "%u", r->nr);
5485                 expand_label_str(label, len, name, n);
5486         }
5487 }
5488
5489 void
5490 expand_label(char *label, size_t len, struct pfctl_rule *r)
5491 {
5492         expand_label_if("$if", label, len, r->ifname);
5493         expand_label_addr("$srcaddr", label, len, r->af, &r->src);
5494         expand_label_addr("$dstaddr", label, len, r->af, &r->dst);
5495         expand_label_port("$srcport", label, len, &r->src);
5496         expand_label_port("$dstport", label, len, &r->dst);
5497         expand_label_proto("$proto", label, len, r->proto);
5498         expand_label_nr("$nr", label, len, r);
5499 }
5500
5501 int
5502 expand_altq(struct pf_altq *a, struct node_if *interfaces,
5503     struct node_queue *nqueues, struct node_queue_bw bwspec,
5504     struct node_queue_opt *opts)
5505 {
5506         struct pf_altq           pa, pb;
5507         char                     qname[PF_QNAME_SIZE];
5508         struct node_queue       *n;
5509         struct node_queue_bw     bw;
5510         int                      errs = 0;
5511
5512         if ((pf->loadopt & PFCTL_FLAG_ALTQ) == 0) {
5513                 FREE_LIST(struct node_if, interfaces);
5514                 if (nqueues)
5515                         FREE_LIST(struct node_queue, nqueues);
5516                 return (0);
5517         }
5518
5519         LOOP_THROUGH(struct node_if, interface, interfaces,
5520                 memcpy(&pa, a, sizeof(struct pf_altq));
5521                 if (strlcpy(pa.ifname, interface->ifname,
5522                     sizeof(pa.ifname)) >= sizeof(pa.ifname))
5523                         errx(1, "expand_altq: strlcpy");
5524
5525                 if (interface->not) {
5526                         yyerror("altq on ! <interface> is not supported");
5527                         errs++;
5528                 } else {
5529                         if (eval_pfaltq(pf, &pa, &bwspec, opts))
5530                                 errs++;
5531                         else
5532                                 if (pfctl_add_altq(pf, &pa))
5533                                         errs++;
5534
5535                         if (pf->opts & PF_OPT_VERBOSE) {
5536                                 print_altq(&pf->paltq->altq, 0,
5537                                     &bwspec, opts);
5538                                 if (nqueues && nqueues->tail) {
5539                                         printf("queue { ");
5540                                         LOOP_THROUGH(struct node_queue, queue,
5541                                             nqueues,
5542                                                 printf("%s ",
5543                                                     queue->queue);
5544                                         );
5545                                         printf("}");
5546                                 }
5547                                 printf("\n");
5548                         }
5549
5550                         if (pa.scheduler == ALTQT_CBQ ||
5551                             pa.scheduler == ALTQT_HFSC ||
5552                             pa.scheduler == ALTQT_FAIRQ) {
5553                                 /* now create a root queue */
5554                                 memset(&pb, 0, sizeof(struct pf_altq));
5555                                 if (strlcpy(qname, "root_", sizeof(qname)) >=
5556                                     sizeof(qname))
5557                                         errx(1, "expand_altq: strlcpy");
5558                                 if (strlcat(qname, interface->ifname,
5559                                     sizeof(qname)) >= sizeof(qname))
5560                                         errx(1, "expand_altq: strlcat");
5561                                 if (strlcpy(pb.qname, qname,
5562                                     sizeof(pb.qname)) >= sizeof(pb.qname))
5563                                         errx(1, "expand_altq: strlcpy");
5564                                 if (strlcpy(pb.ifname, interface->ifname,
5565                                     sizeof(pb.ifname)) >= sizeof(pb.ifname))
5566                                         errx(1, "expand_altq: strlcpy");
5567                                 pb.qlimit = pa.qlimit;
5568                                 pb.scheduler = pa.scheduler;
5569                                 bw.bw_absolute = pa.ifbandwidth;
5570                                 bw.bw_percent = 0;
5571                                 if (eval_pfqueue(pf, &pb, &bw, opts))
5572                                         errs++;
5573                                 else
5574                                         if (pfctl_add_altq(pf, &pb))
5575                                                 errs++;
5576                         }
5577
5578                         LOOP_THROUGH(struct node_queue, queue, nqueues,
5579                                 n = calloc(1, sizeof(struct node_queue));
5580                                 if (n == NULL)
5581                                         err(1, "expand_altq: calloc");
5582                                 if (pa.scheduler == ALTQT_CBQ ||
5583                                     pa.scheduler == ALTQT_HFSC ||
5584                                     pa.scheduler == ALTQT_FAIRQ)
5585                                         if (strlcpy(n->parent, qname,
5586                                             sizeof(n->parent)) >=
5587                                             sizeof(n->parent))
5588                                                 errx(1, "expand_altq: strlcpy");
5589                                 if (strlcpy(n->queue, queue->queue,
5590                                     sizeof(n->queue)) >= sizeof(n->queue))
5591                                         errx(1, "expand_altq: strlcpy");
5592                                 if (strlcpy(n->ifname, interface->ifname,
5593                                     sizeof(n->ifname)) >= sizeof(n->ifname))
5594                                         errx(1, "expand_altq: strlcpy");
5595                                 n->scheduler = pa.scheduler;
5596                                 n->next = NULL;
5597                                 n->tail = n;
5598                                 if (queues == NULL)
5599                                         queues = n;
5600                                 else {
5601                                         queues->tail->next = n;
5602                                         queues->tail = n;
5603                                 }
5604                         );
5605                 }
5606         );
5607         FREE_LIST(struct node_if, interfaces);
5608         if (nqueues)
5609                 FREE_LIST(struct node_queue, nqueues);
5610
5611         return (errs);
5612 }
5613
5614 int
5615 expand_queue(struct pf_altq *a, struct node_if *interfaces,
5616     struct node_queue *nqueues, struct node_queue_bw bwspec,
5617     struct node_queue_opt *opts)
5618 {
5619         struct node_queue       *n, *nq;
5620         struct pf_altq           pa;
5621         u_int8_t                 found = 0;
5622         u_int8_t                 errs = 0;
5623
5624         if ((pf->loadopt & PFCTL_FLAG_ALTQ) == 0) {
5625                 FREE_LIST(struct node_queue, nqueues);
5626                 return (0);
5627         }
5628
5629         if (queues == NULL) {
5630                 yyerror("queue %s has no parent", a->qname);
5631                 FREE_LIST(struct node_queue, nqueues);
5632                 return (1);
5633         }
5634
5635         LOOP_THROUGH(struct node_if, interface, interfaces,
5636                 LOOP_THROUGH(struct node_queue, tqueue, queues,
5637                         if (!strncmp(a->qname, tqueue->queue, PF_QNAME_SIZE) &&
5638                             (interface->ifname[0] == 0 ||
5639                             (!interface->not && !strncmp(interface->ifname,
5640                             tqueue->ifname, IFNAMSIZ)) ||
5641                             (interface->not && strncmp(interface->ifname,
5642                             tqueue->ifname, IFNAMSIZ)))) {
5643                                 /* found ourself in queues */
5644                                 found++;
5645
5646                                 memcpy(&pa, a, sizeof(struct pf_altq));
5647
5648                                 if (pa.scheduler != ALTQT_NONE &&
5649                                     pa.scheduler != tqueue->scheduler) {
5650                                         yyerror("exactly one scheduler type "
5651                                             "per interface allowed");
5652                                         return (1);
5653                                 }
5654                                 pa.scheduler = tqueue->scheduler;
5655
5656                                 /* scheduler dependent error checking */
5657                                 switch (pa.scheduler) {
5658                                 case ALTQT_PRIQ:
5659                                         if (nqueues != NULL) {
5660                                                 yyerror("priq queues cannot "
5661                                                     "have child queues");
5662                                                 return (1);
5663                                         }
5664                                         if (bwspec.bw_absolute > 0 ||
5665                                             bwspec.bw_percent < 100) {
5666                                                 yyerror("priq doesn't take "
5667                                                     "bandwidth");
5668                                                 return (1);
5669                                         }
5670                                         break;
5671                                 default:
5672                                         break;
5673                                 }
5674
5675                                 if (strlcpy(pa.ifname, tqueue->ifname,
5676                                     sizeof(pa.ifname)) >= sizeof(pa.ifname))
5677                                         errx(1, "expand_queue: strlcpy");
5678                                 if (strlcpy(pa.parent, tqueue->parent,
5679                                     sizeof(pa.parent)) >= sizeof(pa.parent))
5680                                         errx(1, "expand_queue: strlcpy");
5681
5682                                 if (eval_pfqueue(pf, &pa, &bwspec, opts))
5683                                         errs++;
5684                                 else
5685                                         if (pfctl_add_altq(pf, &pa))
5686                                                 errs++;
5687
5688                                 for (nq = nqueues; nq != NULL; nq = nq->next) {
5689                                         if (!strcmp(a->qname, nq->queue)) {
5690                                                 yyerror("queue cannot have "
5691                                                     "itself as child");
5692                                                 errs++;
5693                                                 continue;
5694                                         }
5695                                         n = calloc(1,
5696                                             sizeof(struct node_queue));
5697                                         if (n == NULL)
5698                                                 err(1, "expand_queue: calloc");
5699                                         if (strlcpy(n->parent, a->qname,
5700                                             sizeof(n->parent)) >=
5701                                             sizeof(n->parent))
5702                                                 errx(1, "expand_queue strlcpy");
5703                                         if (strlcpy(n->queue, nq->queue,
5704                                             sizeof(n->queue)) >=
5705                                             sizeof(n->queue))
5706                                                 errx(1, "expand_queue strlcpy");
5707                                         if (strlcpy(n->ifname, tqueue->ifname,
5708                                             sizeof(n->ifname)) >=
5709                                             sizeof(n->ifname))
5710                                                 errx(1, "expand_queue strlcpy");
5711                                         n->scheduler = tqueue->scheduler;
5712                                         n->next = NULL;
5713                                         n->tail = n;
5714                                         if (queues == NULL)
5715                                                 queues = n;
5716                                         else {
5717                                                 queues->tail->next = n;
5718                                                 queues->tail = n;
5719                                         }
5720                                 }
5721                                 if ((pf->opts & PF_OPT_VERBOSE) && (
5722                                     (found == 1 && interface->ifname[0] == 0) ||
5723                                     (found > 0 && interface->ifname[0] != 0))) {
5724                                         print_queue(&pf->paltq->altq, 0,
5725                                             &bwspec, interface->ifname[0] != 0,
5726                                             opts);
5727                                         if (nqueues && nqueues->tail) {
5728                                                 printf("{ ");
5729                                                 LOOP_THROUGH(struct node_queue,
5730                                                     queue, nqueues,
5731                                                         printf("%s ",
5732                                                             queue->queue);
5733                                                 );
5734                                                 printf("}");
5735                                         }
5736                                         printf("\n");
5737                                 }
5738                         }
5739                 );
5740         );
5741
5742         FREE_LIST(struct node_queue, nqueues);
5743         FREE_LIST(struct node_if, interfaces);
5744
5745         if (!found) {
5746                 yyerror("queue %s has no parent", a->qname);
5747                 errs++;
5748         }
5749
5750         if (errs)
5751                 return (1);
5752         else
5753                 return (0);
5754 }
5755
5756 static int
5757 pf_af_to_proto(sa_family_t af)
5758 {
5759         if (af == AF_INET)
5760                 return (ETHERTYPE_IP);
5761         if (af == AF_INET6)
5762                 return (ETHERTYPE_IPV6);
5763
5764         return (0);
5765 }
5766
5767 void
5768 expand_eth_rule(struct pfctl_eth_rule *r,
5769     struct node_if *interfaces, struct node_etherproto *protos,
5770     struct node_mac *srcs, struct node_mac *dsts,
5771     struct node_host *ipsrcs, struct node_host *ipdsts, const char *anchor_call)
5772 {
5773         LOOP_THROUGH(struct node_if, interface, interfaces,
5774         LOOP_THROUGH(struct node_etherproto, proto, protos,
5775         LOOP_THROUGH(struct node_mac, src, srcs,
5776         LOOP_THROUGH(struct node_mac, dst, dsts,
5777         LOOP_THROUGH(struct node_host, ipsrc, ipsrcs,
5778         LOOP_THROUGH(struct node_host, ipdst, ipdsts,
5779                 strlcpy(r->ifname, interface->ifname,
5780                     sizeof(r->ifname));
5781                 r->ifnot = interface->not;
5782                 r->proto = proto->proto;
5783                 if (!r->proto && ipsrc->af)
5784                         r->proto = pf_af_to_proto(ipsrc->af);
5785                 else if (!r->proto && ipdst->af)
5786                         r->proto = pf_af_to_proto(ipdst->af);
5787                 bcopy(src->mac, r->src.addr, ETHER_ADDR_LEN);
5788                 bcopy(src->mask, r->src.mask, ETHER_ADDR_LEN);
5789                 r->src.neg = src->neg;
5790                 r->src.isset = src->isset;
5791                 r->ipsrc.addr = ipsrc->addr;
5792                 r->ipsrc.neg = ipsrc->not;
5793                 r->ipdst.addr = ipdst->addr;
5794                 r->ipdst.neg = ipdst->not;
5795                 bcopy(dst->mac, r->dst.addr, ETHER_ADDR_LEN);
5796                 bcopy(dst->mask, r->dst.mask, ETHER_ADDR_LEN);
5797                 r->dst.neg = dst->neg;
5798                 r->dst.isset = dst->isset;
5799                 r->nr = pf->eastack[pf->asd]->match++;
5800
5801                 pfctl_append_eth_rule(pf, r, anchor_call);
5802         ))))));
5803
5804         FREE_LIST(struct node_if, interfaces);
5805         FREE_LIST(struct node_etherproto, protos);
5806         FREE_LIST(struct node_mac, srcs);
5807         FREE_LIST(struct node_mac, dsts);
5808         FREE_LIST(struct node_host, ipsrcs);
5809         FREE_LIST(struct node_host, ipdsts);
5810 }
5811
5812 void
5813 expand_rule(struct pfctl_rule *r,
5814     struct node_if *interfaces, struct node_host *rpool_hosts,
5815     struct node_proto *protos, struct node_os *src_oses,
5816     struct node_host *src_hosts, struct node_port *src_ports,
5817     struct node_host *dst_hosts, struct node_port *dst_ports,
5818     struct node_uid *uids, struct node_gid *gids, struct node_icmp *icmp_types,
5819     const char *anchor_call)
5820 {
5821         sa_family_t              af = r->af;
5822         int                      added = 0, error = 0;
5823         char                     ifname[IF_NAMESIZE];
5824         char                     label[PF_RULE_MAX_LABEL_COUNT][PF_RULE_LABEL_SIZE];
5825         char                     tagname[PF_TAG_NAME_SIZE];
5826         char                     match_tagname[PF_TAG_NAME_SIZE];
5827         struct pf_pooladdr      *pa;
5828         struct node_host        *h;
5829         u_int8_t                 flags, flagset, keep_state;
5830
5831         memcpy(label, r->label, sizeof(r->label));
5832         assert(sizeof(r->label) == sizeof(label));
5833         if (strlcpy(tagname, r->tagname, sizeof(tagname)) >= sizeof(tagname))
5834                 errx(1, "expand_rule: strlcpy");
5835         if (strlcpy(match_tagname, r->match_tagname, sizeof(match_tagname)) >=
5836             sizeof(match_tagname))
5837                 errx(1, "expand_rule: strlcpy");
5838         flags = r->flags;
5839         flagset = r->flagset;
5840         keep_state = r->keep_state;
5841
5842         LOOP_THROUGH(struct node_if, interface, interfaces,
5843         LOOP_THROUGH(struct node_proto, proto, protos,
5844         LOOP_THROUGH(struct node_icmp, icmp_type, icmp_types,
5845         LOOP_THROUGH(struct node_host, src_host, src_hosts,
5846         LOOP_THROUGH(struct node_port, src_port, src_ports,
5847         LOOP_THROUGH(struct node_os, src_os, src_oses,
5848         LOOP_THROUGH(struct node_host, dst_host, dst_hosts,
5849         LOOP_THROUGH(struct node_port, dst_port, dst_ports,
5850         LOOP_THROUGH(struct node_uid, uid, uids,
5851         LOOP_THROUGH(struct node_gid, gid, gids,
5852
5853                 r->af = af;
5854                 /* for link-local IPv6 address, interface must match up */
5855                 if ((r->af && src_host->af && r->af != src_host->af) ||
5856                     (r->af && dst_host->af && r->af != dst_host->af) ||
5857                     (src_host->af && dst_host->af &&
5858                     src_host->af != dst_host->af) ||
5859                     (src_host->ifindex && dst_host->ifindex &&
5860                     src_host->ifindex != dst_host->ifindex) ||
5861                     (src_host->ifindex && *interface->ifname &&
5862                     src_host->ifindex != if_nametoindex(interface->ifname)) ||
5863                     (dst_host->ifindex && *interface->ifname &&
5864                     dst_host->ifindex != if_nametoindex(interface->ifname)))
5865                         continue;
5866                 if (!r->af && src_host->af)
5867                         r->af = src_host->af;
5868                 else if (!r->af && dst_host->af)
5869                         r->af = dst_host->af;
5870
5871                 if (*interface->ifname)
5872                         strlcpy(r->ifname, interface->ifname,
5873                             sizeof(r->ifname));
5874                 else if (if_indextoname(src_host->ifindex, ifname))
5875                         strlcpy(r->ifname, ifname, sizeof(r->ifname));
5876                 else if (if_indextoname(dst_host->ifindex, ifname))
5877                         strlcpy(r->ifname, ifname, sizeof(r->ifname));
5878                 else
5879                         memset(r->ifname, '\0', sizeof(r->ifname));
5880
5881                 memcpy(r->label, label, sizeof(r->label));
5882                 if (strlcpy(r->tagname, tagname, sizeof(r->tagname)) >=
5883                     sizeof(r->tagname))
5884                         errx(1, "expand_rule: strlcpy");
5885                 if (strlcpy(r->match_tagname, match_tagname,
5886                     sizeof(r->match_tagname)) >= sizeof(r->match_tagname))
5887                         errx(1, "expand_rule: strlcpy");
5888
5889                 error += check_netmask(src_host, r->af);
5890                 error += check_netmask(dst_host, r->af);
5891
5892                 r->ifnot = interface->not;
5893                 r->proto = proto->proto;
5894                 r->src.addr = src_host->addr;
5895                 r->src.neg = src_host->not;
5896                 r->src.port[0] = src_port->port[0];
5897                 r->src.port[1] = src_port->port[1];
5898                 r->src.port_op = src_port->op;
5899                 r->dst.addr = dst_host->addr;
5900                 r->dst.neg = dst_host->not;
5901                 r->dst.port[0] = dst_port->port[0];
5902                 r->dst.port[1] = dst_port->port[1];
5903                 r->dst.port_op = dst_port->op;
5904                 r->uid.op = uid->op;
5905                 r->uid.uid[0] = uid->uid[0];
5906                 r->uid.uid[1] = uid->uid[1];
5907                 r->gid.op = gid->op;
5908                 r->gid.gid[0] = gid->gid[0];
5909                 r->gid.gid[1] = gid->gid[1];
5910                 r->type = icmp_type->type;
5911                 r->code = icmp_type->code;
5912
5913                 if ((keep_state == PF_STATE_MODULATE ||
5914                     keep_state == PF_STATE_SYNPROXY) &&
5915                     r->proto && r->proto != IPPROTO_TCP)
5916                         r->keep_state = PF_STATE_NORMAL;
5917                 else
5918                         r->keep_state = keep_state;
5919
5920                 if (r->proto && r->proto != IPPROTO_TCP) {
5921                         r->flags = 0;
5922                         r->flagset = 0;
5923                 } else {
5924                         r->flags = flags;
5925                         r->flagset = flagset;
5926                 }
5927                 if (icmp_type->proto && r->proto != icmp_type->proto) {
5928                         yyerror("icmp-type mismatch");
5929                         error++;
5930                 }
5931
5932                 if (src_os && src_os->os) {
5933                         r->os_fingerprint = pfctl_get_fingerprint(src_os->os);
5934                         if ((pf->opts & PF_OPT_VERBOSE2) &&
5935                             r->os_fingerprint == PF_OSFP_NOMATCH)
5936                                 fprintf(stderr,
5937                                     "warning: unknown '%s' OS fingerprint\n",
5938                                     src_os->os);
5939                 } else {
5940                         r->os_fingerprint = PF_OSFP_ANY;
5941                 }
5942
5943                 TAILQ_INIT(&r->rpool.list);
5944                 for (h = rpool_hosts; h != NULL; h = h->next) {
5945                         pa = calloc(1, sizeof(struct pf_pooladdr));
5946                         if (pa == NULL)
5947                                 err(1, "expand_rule: calloc");
5948                         pa->addr = h->addr;
5949                         if (h->ifname != NULL) {
5950                                 if (strlcpy(pa->ifname, h->ifname,
5951                                     sizeof(pa->ifname)) >=
5952                                     sizeof(pa->ifname))
5953                                         errx(1, "expand_rule: strlcpy");
5954                         } else
5955                                 pa->ifname[0] = 0;
5956                         TAILQ_INSERT_TAIL(&r->rpool.list, pa, entries);
5957                 }
5958
5959                 if (rule_consistent(r, anchor_call[0]) < 0 || error)
5960                         yyerror("skipping rule due to errors");
5961                 else {
5962                         r->nr = pf->astack[pf->asd]->match++;
5963                         pfctl_append_rule(pf, r, anchor_call);
5964                         added++;
5965                 }
5966
5967         ))))))))));
5968
5969         FREE_LIST(struct node_if, interfaces);
5970         FREE_LIST(struct node_proto, protos);
5971         FREE_LIST(struct node_host, src_hosts);
5972         FREE_LIST(struct node_port, src_ports);
5973         FREE_LIST(struct node_os, src_oses);
5974         FREE_LIST(struct node_host, dst_hosts);
5975         FREE_LIST(struct node_port, dst_ports);
5976         FREE_LIST(struct node_uid, uids);
5977         FREE_LIST(struct node_gid, gids);
5978         FREE_LIST(struct node_icmp, icmp_types);
5979         FREE_LIST(struct node_host, rpool_hosts);
5980
5981         if (!added)
5982                 yyerror("rule expands to no valid combination");
5983 }
5984
5985 int
5986 expand_skip_interface(struct node_if *interfaces)
5987 {
5988         int     errs = 0;
5989
5990         if (!interfaces || (!interfaces->next && !interfaces->not &&
5991             !strcmp(interfaces->ifname, "none"))) {
5992                 if (pf->opts & PF_OPT_VERBOSE)
5993                         printf("set skip on none\n");
5994                 errs = pfctl_set_interface_flags(pf, "", PFI_IFLAG_SKIP, 0);
5995                 return (errs);
5996         }
5997
5998         if (pf->opts & PF_OPT_VERBOSE)
5999                 printf("set skip on {");
6000         LOOP_THROUGH(struct node_if, interface, interfaces,
6001                 if (pf->opts & PF_OPT_VERBOSE)
6002                         printf(" %s", interface->ifname);
6003                 if (interface->not) {
6004                         yyerror("skip on ! <interface> is not supported");
6005                         errs++;
6006                 } else
6007                         errs += pfctl_set_interface_flags(pf,
6008                             interface->ifname, PFI_IFLAG_SKIP, 1);
6009         );
6010         if (pf->opts & PF_OPT_VERBOSE)
6011                 printf(" }\n");
6012
6013         FREE_LIST(struct node_if, interfaces);
6014
6015         if (errs)
6016                 return (1);
6017         else
6018                 return (0);
6019 }
6020
6021 #undef FREE_LIST
6022 #undef LOOP_THROUGH
6023
6024 int
6025 check_rulestate(int desired_state)
6026 {
6027         if (require_order && (rulestate > desired_state)) {
6028                 yyerror("Rules must be in order: options, ethernet, "
6029                     "normalization, queueing, translation, filtering");
6030                 return (1);
6031         }
6032         rulestate = desired_state;
6033         return (0);
6034 }
6035
6036 int
6037 kw_cmp(const void *k, const void *e)
6038 {
6039         return (strcmp(k, ((const struct keywords *)e)->k_name));
6040 }
6041
6042 int
6043 lookup(char *s)
6044 {
6045         /* this has to be sorted always */
6046         static const struct keywords keywords[] = {
6047                 { "all",                ALL},
6048                 { "allow-opts",         ALLOWOPTS},
6049                 { "altq",               ALTQ},
6050                 { "anchor",             ANCHOR},
6051                 { "antispoof",          ANTISPOOF},
6052                 { "any",                ANY},
6053                 { "bandwidth",          BANDWIDTH},
6054                 { "binat",              BINAT},
6055                 { "binat-anchor",       BINATANCHOR},
6056                 { "bitmask",            BITMASK},
6057                 { "block",              BLOCK},
6058                 { "block-policy",       BLOCKPOLICY},
6059                 { "buckets",            BUCKETS},
6060                 { "cbq",                CBQ},
6061                 { "code",               CODE},
6062                 { "codelq",             CODEL},
6063                 { "crop",               FRAGCROP},
6064                 { "debug",              DEBUG},
6065                 { "divert-reply",       DIVERTREPLY},
6066                 { "divert-to",          DIVERTTO},
6067                 { "dnpipe",             DNPIPE},
6068                 { "dnqueue",            DNQUEUE},
6069                 { "drop",               DROP},
6070                 { "drop-ovl",           FRAGDROP},
6071                 { "dup-to",             DUPTO},
6072                 { "ether",              ETHER},
6073                 { "fail-policy",        FAILPOLICY},
6074                 { "fairq",              FAIRQ},
6075                 { "fastroute",          FASTROUTE},
6076                 { "file",               FILENAME},
6077                 { "fingerprints",       FINGERPRINTS},
6078                 { "flags",              FLAGS},
6079                 { "floating",           FLOATING},
6080                 { "flush",              FLUSH},
6081                 { "for",                FOR},
6082                 { "fragment",           FRAGMENT},
6083                 { "from",               FROM},
6084                 { "global",             GLOBAL},
6085                 { "group",              GROUP},
6086                 { "hfsc",               HFSC},
6087                 { "hogs",               HOGS},
6088                 { "hostid",             HOSTID},
6089                 { "icmp-type",          ICMPTYPE},
6090                 { "icmp6-type",         ICMP6TYPE},
6091                 { "if-bound",           IFBOUND},
6092                 { "in",                 IN},
6093                 { "include",            INCLUDE},
6094                 { "inet",               INET},
6095                 { "inet6",              INET6},
6096                 { "interval",           INTERVAL},
6097                 { "keep",               KEEP},
6098                 { "keepcounters",       KEEPCOUNTERS},
6099                 { "l3",                 L3},
6100                 { "label",              LABEL},
6101                 { "limit",              LIMIT},
6102                 { "linkshare",          LINKSHARE},
6103                 { "load",               LOAD},
6104                 { "log",                LOG},
6105                 { "loginterface",       LOGINTERFACE},
6106                 { "map-e-portset",      MAPEPORTSET},
6107                 { "match",              MATCH},
6108                 { "max",                MAXIMUM},
6109                 { "max-mss",            MAXMSS},
6110                 { "max-src-conn",       MAXSRCCONN},
6111                 { "max-src-conn-rate",  MAXSRCCONNRATE},
6112                 { "max-src-nodes",      MAXSRCNODES},
6113                 { "max-src-states",     MAXSRCSTATES},
6114                 { "min-ttl",            MINTTL},
6115                 { "modulate",           MODULATE},
6116                 { "nat",                NAT},
6117                 { "nat-anchor",         NATANCHOR},
6118                 { "no",                 NO},
6119                 { "no-df",              NODF},
6120                 { "no-route",           NOROUTE},
6121                 { "no-sync",            NOSYNC},
6122                 { "on",                 ON},
6123                 { "optimization",       OPTIMIZATION},
6124                 { "os",                 OS},
6125                 { "out",                OUT},
6126                 { "overload",           OVERLOAD},
6127                 { "pass",               PASS},
6128                 { "port",               PORT},
6129                 { "prio",               PRIO},
6130                 { "priority",           PRIORITY},
6131                 { "priq",               PRIQ},
6132                 { "probability",        PROBABILITY},
6133                 { "proto",              PROTO},
6134                 { "qlimit",             QLIMIT},
6135                 { "queue",              QUEUE},
6136                 { "quick",              QUICK},
6137                 { "random",             RANDOM},
6138                 { "random-id",          RANDOMID},
6139                 { "rdr",                RDR},
6140                 { "rdr-anchor",         RDRANCHOR},
6141                 { "realtime",           REALTIME},
6142                 { "reassemble",         REASSEMBLE},
6143                 { "reply-to",           REPLYTO},
6144                 { "require-order",      REQUIREORDER},
6145                 { "return",             RETURN},
6146                 { "return-icmp",        RETURNICMP},
6147                 { "return-icmp6",       RETURNICMP6},
6148                 { "return-rst",         RETURNRST},
6149                 { "ridentifier",        RIDENTIFIER},
6150                 { "round-robin",        ROUNDROBIN},
6151                 { "route",              ROUTE},
6152                 { "route-to",           ROUTETO},
6153                 { "rtable",             RTABLE},
6154                 { "rule",               RULE},
6155                 { "ruleset-optimization",       RULESET_OPTIMIZATION},
6156                 { "scrub",              SCRUB},
6157                 { "set",                SET},
6158                 { "set-tos",            SETTOS},
6159                 { "skip",               SKIP},
6160                 { "sloppy",             SLOPPY},
6161                 { "source-hash",        SOURCEHASH},
6162                 { "source-track",       SOURCETRACK},
6163                 { "state",              STATE},
6164                 { "state-defaults",     STATEDEFAULTS},
6165                 { "state-policy",       STATEPOLICY},
6166                 { "static-port",        STATICPORT},
6167                 { "sticky-address",     STICKYADDRESS},
6168                 { "syncookies",         SYNCOOKIES},
6169                 { "synproxy",           SYNPROXY},
6170                 { "table",              TABLE},
6171                 { "tag",                TAG},
6172                 { "tagged",             TAGGED},
6173                 { "target",             TARGET},
6174                 { "tbrsize",            TBRSIZE},
6175                 { "timeout",            TIMEOUT},
6176                 { "to",                 TO},
6177                 { "tos",                TOS},
6178                 { "ttl",                TTL},
6179                 { "upperlimit",         UPPERLIMIT},
6180                 { "urpf-failed",        URPFFAILED},
6181                 { "user",               USER},
6182         };
6183         const struct keywords   *p;
6184
6185         p = bsearch(s, keywords, sizeof(keywords)/sizeof(keywords[0]),
6186             sizeof(keywords[0]), kw_cmp);
6187
6188         if (p) {
6189                 if (debug > 1)
6190                         fprintf(stderr, "%s: %d\n", s, p->k_val);
6191                 return (p->k_val);
6192         } else {
6193                 if (debug > 1)
6194                         fprintf(stderr, "string: %s\n", s);
6195                 return (STRING);
6196         }
6197 }
6198
6199 #define MAXPUSHBACK     128
6200
6201 static char     *parsebuf;
6202 static int       parseindex;
6203 static char      pushback_buffer[MAXPUSHBACK];
6204 static int       pushback_index = 0;
6205
6206 int
6207 lgetc(int quotec)
6208 {
6209         int             c, next;
6210
6211         if (parsebuf) {
6212                 /* Read character from the parsebuffer instead of input. */
6213                 if (parseindex >= 0) {
6214                         c = parsebuf[parseindex++];
6215                         if (c != '\0')
6216                                 return (c);
6217                         parsebuf = NULL;
6218                 } else
6219                         parseindex++;
6220         }
6221
6222         if (pushback_index)
6223                 return (pushback_buffer[--pushback_index]);
6224
6225         if (quotec) {
6226                 if ((c = getc(file->stream)) == EOF) {
6227                         yyerror("reached end of file while parsing quoted string");
6228                         if (popfile() == EOF)
6229                                 return (EOF);
6230                         return (quotec);
6231                 }
6232                 return (c);
6233         }
6234
6235         while ((c = getc(file->stream)) == '\\') {
6236                 next = getc(file->stream);
6237                 if (next != '\n') {
6238                         c = next;
6239                         break;
6240                 }
6241                 yylval.lineno = file->lineno;
6242                 file->lineno++;
6243         }
6244
6245         while (c == EOF) {
6246                 if (popfile() == EOF)
6247                         return (EOF);
6248                 c = getc(file->stream);
6249         }
6250         return (c);
6251 }
6252
6253 int
6254 lungetc(int c)
6255 {
6256         if (c == EOF)
6257                 return (EOF);
6258         if (parsebuf) {
6259                 parseindex--;
6260                 if (parseindex >= 0)
6261                         return (c);
6262         }
6263         if (pushback_index < MAXPUSHBACK-1)
6264                 return (pushback_buffer[pushback_index++] = c);
6265         else
6266                 return (EOF);
6267 }
6268
6269 int
6270 findeol(void)
6271 {
6272         int     c;
6273
6274         parsebuf = NULL;
6275
6276         /* skip to either EOF or the first real EOL */
6277         while (1) {
6278                 if (pushback_index)
6279                         c = pushback_buffer[--pushback_index];
6280                 else
6281                         c = lgetc(0);
6282                 if (c == '\n') {
6283                         file->lineno++;
6284                         break;
6285                 }
6286                 if (c == EOF)
6287                         break;
6288         }
6289         return (ERROR);
6290 }
6291
6292 int
6293 yylex(void)
6294 {
6295         char     buf[8096];
6296         char    *p, *val;
6297         int      quotec, next, c;
6298         int      token;
6299
6300 top:
6301         p = buf;
6302         while ((c = lgetc(0)) == ' ' || c == '\t')
6303                 ; /* nothing */
6304
6305         yylval.lineno = file->lineno;
6306         if (c == '#')
6307                 while ((c = lgetc(0)) != '\n' && c != EOF)
6308                         ; /* nothing */
6309         if (c == '$' && parsebuf == NULL) {
6310                 while (1) {
6311                         if ((c = lgetc(0)) == EOF)
6312                                 return (0);
6313
6314                         if (p + 1 >= buf + sizeof(buf) - 1) {
6315                                 yyerror("string too long");
6316                                 return (findeol());
6317                         }
6318                         if (isalnum(c) || c == '_') {
6319                                 *p++ = (char)c;
6320                                 continue;
6321                         }
6322                         *p = '\0';
6323                         lungetc(c);
6324                         break;
6325                 }
6326                 val = symget(buf);
6327                 if (val == NULL) {
6328                         yyerror("macro '%s' not defined", buf);
6329                         return (findeol());
6330                 }
6331                 parsebuf = val;
6332                 parseindex = 0;
6333                 goto top;
6334         }
6335
6336         switch (c) {
6337         case '\'':
6338         case '"':
6339                 quotec = c;
6340                 while (1) {
6341                         if ((c = lgetc(quotec)) == EOF)
6342                                 return (0);
6343                         if (c == '\n') {
6344                                 file->lineno++;
6345                                 continue;
6346                         } else if (c == '\\') {
6347                                 if ((next = lgetc(quotec)) == EOF)
6348                                         return (0);
6349                                 if (next == quotec || c == ' ' || c == '\t')
6350                                         c = next;
6351                                 else if (next == '\n') {
6352                                         file->lineno++;
6353                                         continue;
6354                                 }
6355                                 else
6356                                         lungetc(next);
6357                         } else if (c == quotec) {
6358                                 *p = '\0';
6359                                 break;
6360                         }
6361                         if (p + 1 >= buf + sizeof(buf) - 1) {
6362                                 yyerror("string too long");
6363                                 return (findeol());
6364                         }
6365                         *p++ = (char)c;
6366                 }
6367                 yylval.v.string = strdup(buf);
6368                 if (yylval.v.string == NULL)
6369                         err(1, "yylex: strdup");
6370                 return (STRING);
6371         case '<':
6372                 next = lgetc(0);
6373                 if (next == '>') {
6374                         yylval.v.i = PF_OP_XRG;
6375                         return (PORTBINARY);
6376                 }
6377                 lungetc(next);
6378                 break;
6379         case '>':
6380                 next = lgetc(0);
6381                 if (next == '<') {
6382                         yylval.v.i = PF_OP_IRG;
6383                         return (PORTBINARY);
6384                 }
6385                 lungetc(next);
6386                 break;
6387         case '-':
6388                 next = lgetc(0);
6389                 if (next == '>')
6390                         return (ARROW);
6391                 lungetc(next);
6392                 break;
6393         }
6394
6395 #define allowed_to_end_number(x) \
6396         (isspace(x) || x == ')' || x ==',' || x == '/' || x == '}' || x == '=')
6397
6398         if (c == '-' || isdigit(c)) {
6399                 do {
6400                         *p++ = c;
6401                         if ((unsigned)(p-buf) >= sizeof(buf)) {
6402                                 yyerror("string too long");
6403                                 return (findeol());
6404                         }
6405                 } while ((c = lgetc(0)) != EOF && isdigit(c));
6406                 lungetc(c);
6407                 if (p == buf + 1 && buf[0] == '-')
6408                         goto nodigits;
6409                 if (c == EOF || allowed_to_end_number(c)) {
6410                         const char *errstr = NULL;
6411
6412                         *p = '\0';
6413                         yylval.v.number = strtonum(buf, LLONG_MIN,
6414                             LLONG_MAX, &errstr);
6415                         if (errstr) {
6416                                 yyerror("\"%s\" invalid number: %s",
6417                                     buf, errstr);
6418                                 return (findeol());
6419                         }
6420                         return (NUMBER);
6421                 } else {
6422 nodigits:
6423                         while (p > buf + 1)
6424                                 lungetc(*--p);
6425                         c = *--p;
6426                         if (c == '-')
6427                                 return (c);
6428                 }
6429         }
6430
6431 #define allowed_in_string(x) \
6432         (isalnum(x) || (ispunct(x) && x != '(' && x != ')' && \
6433         x != '{' && x != '}' && x != '<' && x != '>' && \
6434         x != '!' && x != '=' && x != '/' && x != '#' && \
6435         x != ','))
6436
6437         if (isalnum(c) || c == ':' || c == '_') {
6438                 do {
6439                         *p++ = c;
6440                         if ((unsigned)(p-buf) >= sizeof(buf)) {
6441                                 yyerror("string too long");
6442                                 return (findeol());
6443                         }
6444                 } while ((c = lgetc(0)) != EOF && (allowed_in_string(c)));
6445                 lungetc(c);
6446                 *p = '\0';
6447                 if ((token = lookup(buf)) == STRING)
6448                         if ((yylval.v.string = strdup(buf)) == NULL)
6449                                 err(1, "yylex: strdup");
6450                 return (token);
6451         }
6452         if (c == '\n') {
6453                 yylval.lineno = file->lineno;
6454                 file->lineno++;
6455         }
6456         if (c == EOF)
6457                 return (0);
6458         return (c);
6459 }
6460
6461 int
6462 check_file_secrecy(int fd, const char *fname)
6463 {
6464         struct stat     st;
6465
6466         if (fstat(fd, &st)) {
6467                 warn("cannot stat %s", fname);
6468                 return (-1);
6469         }
6470         if (st.st_uid != 0 && st.st_uid != getuid()) {
6471                 warnx("%s: owner not root or current user", fname);
6472                 return (-1);
6473         }
6474         if (st.st_mode & (S_IRWXG | S_IRWXO)) {
6475                 warnx("%s: group/world readable/writeable", fname);
6476                 return (-1);
6477         }
6478         return (0);
6479 }
6480
6481 struct file *
6482 pushfile(const char *name, int secret)
6483 {
6484         struct file     *nfile;
6485
6486         if ((nfile = calloc(1, sizeof(struct file))) == NULL ||
6487             (nfile->name = strdup(name)) == NULL) {
6488                 warn("malloc");
6489                 return (NULL);
6490         }
6491         if (TAILQ_FIRST(&files) == NULL && strcmp(nfile->name, "-") == 0) {
6492                 nfile->stream = stdin;
6493                 free(nfile->name);
6494                 if ((nfile->name = strdup("stdin")) == NULL) {
6495                         warn("strdup");
6496                         free(nfile);
6497                         return (NULL);
6498                 }
6499         } else if ((nfile->stream = fopen(nfile->name, "r")) == NULL) {
6500                 warn("%s", nfile->name);
6501                 free(nfile->name);
6502                 free(nfile);
6503                 return (NULL);
6504         } else if (secret &&
6505             check_file_secrecy(fileno(nfile->stream), nfile->name)) {
6506                 fclose(nfile->stream);
6507                 free(nfile->name);
6508                 free(nfile);
6509                 return (NULL);
6510         }
6511         nfile->lineno = 1;
6512         TAILQ_INSERT_TAIL(&files, nfile, entry);
6513         return (nfile);
6514 }
6515
6516 int
6517 popfile(void)
6518 {
6519         struct file     *prev;
6520
6521         if ((prev = TAILQ_PREV(file, files, entry)) != NULL) {
6522                 prev->errors += file->errors;
6523                 TAILQ_REMOVE(&files, file, entry);
6524                 fclose(file->stream);
6525                 free(file->name);
6526                 free(file);
6527                 file = prev;
6528                 return (0);
6529         }
6530         return (EOF);
6531 }
6532
6533 int
6534 parse_config(char *filename, struct pfctl *xpf)
6535 {
6536         int              errors = 0;
6537         struct sym      *sym;
6538
6539         pf = xpf;
6540         errors = 0;
6541         rulestate = PFCTL_STATE_NONE;
6542         returnicmpdefault = (ICMP_UNREACH << 8) | ICMP_UNREACH_PORT;
6543         returnicmp6default =
6544             (ICMP6_DST_UNREACH << 8) | ICMP6_DST_UNREACH_NOPORT;
6545         blockpolicy = PFRULE_DROP;
6546         failpolicy = PFRULE_DROP;
6547         require_order = 1;
6548
6549         if ((file = pushfile(filename, 0)) == NULL) {
6550                 warn("cannot open the main config file!");
6551                 return (-1);
6552         }
6553
6554         yyparse();
6555         errors = file->errors;
6556         popfile();
6557
6558         /* Free macros and check which have not been used. */
6559         while ((sym = TAILQ_FIRST(&symhead))) {
6560                 if ((pf->opts & PF_OPT_VERBOSE2) && !sym->used)
6561                         fprintf(stderr, "warning: macro '%s' not "
6562                             "used\n", sym->nam);
6563                 free(sym->nam);
6564                 free(sym->val);
6565                 TAILQ_REMOVE(&symhead, sym, entry);
6566                 free(sym);
6567         }
6568
6569         return (errors ? -1 : 0);
6570 }
6571
6572 int
6573 symset(const char *nam, const char *val, int persist)
6574 {
6575         struct sym      *sym;
6576
6577         for (sym = TAILQ_FIRST(&symhead); sym && strcmp(nam, sym->nam);
6578             sym = TAILQ_NEXT(sym, entry))
6579                 ;       /* nothing */
6580
6581         if (sym != NULL) {
6582                 if (sym->persist == 1)
6583                         return (0);
6584                 else {
6585                         free(sym->nam);
6586                         free(sym->val);
6587                         TAILQ_REMOVE(&symhead, sym, entry);
6588                         free(sym);
6589                 }
6590         }
6591         if ((sym = calloc(1, sizeof(*sym))) == NULL)
6592                 return (-1);
6593
6594         sym->nam = strdup(nam);
6595         if (sym->nam == NULL) {
6596                 free(sym);
6597                 return (-1);
6598         }
6599         sym->val = strdup(val);
6600         if (sym->val == NULL) {
6601                 free(sym->nam);
6602                 free(sym);
6603                 return (-1);
6604         }
6605         sym->used = 0;
6606         sym->persist = persist;
6607         TAILQ_INSERT_TAIL(&symhead, sym, entry);
6608         return (0);
6609 }
6610
6611 int
6612 pfctl_cmdline_symset(char *s)
6613 {
6614         char    *sym, *val;
6615         int      ret;
6616
6617         if ((val = strrchr(s, '=')) == NULL)
6618                 return (-1);
6619
6620         if ((sym = malloc(strlen(s) - strlen(val) + 1)) == NULL)
6621                 err(1, "pfctl_cmdline_symset: malloc");
6622
6623         strlcpy(sym, s, strlen(s) - strlen(val) + 1);
6624
6625         ret = symset(sym, val + 1, 1);
6626         free(sym);
6627
6628         return (ret);
6629 }
6630
6631 char *
6632 symget(const char *nam)
6633 {
6634         struct sym      *sym;
6635
6636         TAILQ_FOREACH(sym, &symhead, entry)
6637                 if (strcmp(nam, sym->nam) == 0) {
6638                         sym->used = 1;
6639                         return (sym->val);
6640                 }
6641         return (NULL);
6642 }
6643
6644 void
6645 mv_rules(struct pfctl_ruleset *src, struct pfctl_ruleset *dst)
6646 {
6647         int i;
6648         struct pfctl_rule *r;
6649
6650         for (i = 0; i < PF_RULESET_MAX; ++i) {
6651                 while ((r = TAILQ_FIRST(src->rules[i].active.ptr))
6652                     != NULL) {
6653                         TAILQ_REMOVE(src->rules[i].active.ptr, r, entries);
6654                         TAILQ_INSERT_TAIL(dst->rules[i].active.ptr, r, entries);
6655                         dst->anchor->match++;
6656                 }
6657                 src->anchor->match = 0;
6658                 while ((r = TAILQ_FIRST(src->rules[i].inactive.ptr))
6659                     != NULL) {
6660                         TAILQ_REMOVE(src->rules[i].inactive.ptr, r, entries);
6661                         TAILQ_INSERT_TAIL(dst->rules[i].inactive.ptr,
6662                                 r, entries);
6663                 }
6664         }
6665 }
6666
6667 void
6668 mv_eth_rules(struct pfctl_eth_ruleset *src, struct pfctl_eth_ruleset *dst)
6669 {
6670         struct pfctl_eth_rule *r;
6671
6672         while ((r = TAILQ_FIRST(&src->rules)) != NULL) {
6673                 TAILQ_REMOVE(&src->rules, r, entries);
6674                 TAILQ_INSERT_TAIL(&dst->rules, r, entries);
6675                 dst->anchor->match++;
6676         }
6677         src->anchor->match = 0;
6678 }
6679
6680 void
6681 decide_address_family(struct node_host *n, sa_family_t *af)
6682 {
6683         if (*af != 0 || n == NULL)
6684                 return;
6685         *af = n->af;
6686         while ((n = n->next) != NULL) {
6687                 if (n->af != *af) {
6688                         *af = 0;
6689                         return;
6690                 }
6691         }
6692 }
6693
6694 void
6695 remove_invalid_hosts(struct node_host **nh, sa_family_t *af)
6696 {
6697         struct node_host        *n = *nh, *prev = NULL;
6698
6699         while (n != NULL) {
6700                 if (*af && n->af && n->af != *af) {
6701                         /* unlink and free n */
6702                         struct node_host *next = n->next;
6703
6704                         /* adjust tail pointer */
6705                         if (n == (*nh)->tail)
6706                                 (*nh)->tail = prev;
6707                         /* adjust previous node's next pointer */
6708                         if (prev == NULL)
6709                                 *nh = next;
6710                         else
6711                                 prev->next = next;
6712                         /* free node */
6713                         if (n->ifname != NULL)
6714                                 free(n->ifname);
6715                         free(n);
6716                         n = next;
6717                 } else {
6718                         if (n->af && !*af)
6719                                 *af = n->af;
6720                         prev = n;
6721                         n = n->next;
6722                 }
6723         }
6724 }
6725
6726 int
6727 invalid_redirect(struct node_host *nh, sa_family_t af)
6728 {
6729         if (!af) {
6730                 struct node_host *n;
6731
6732                 /* tables and dyniftl are ok without an address family */
6733                 for (n = nh; n != NULL; n = n->next) {
6734                         if (n->addr.type != PF_ADDR_TABLE &&
6735                             n->addr.type != PF_ADDR_DYNIFTL) {
6736                                 yyerror("address family not given and "
6737                                     "translation address expands to multiple "
6738                                     "address families");
6739                                 return (1);
6740                         }
6741                 }
6742         }
6743         if (nh == NULL) {
6744                 yyerror("no translation address with matching address family "
6745                     "found.");
6746                 return (1);
6747         }
6748         return (0);
6749 }
6750
6751 int
6752 atoul(char *s, u_long *ulvalp)
6753 {
6754         u_long   ulval;
6755         char    *ep;
6756
6757         errno = 0;
6758         ulval = strtoul(s, &ep, 0);
6759         if (s[0] == '\0' || *ep != '\0')
6760                 return (-1);
6761         if (errno == ERANGE && ulval == ULONG_MAX)
6762                 return (-1);
6763         *ulvalp = ulval;
6764         return (0);
6765 }
6766
6767 int
6768 getservice(char *n)
6769 {
6770         struct servent  *s;
6771         u_long           ulval;
6772
6773         if (atoul(n, &ulval) == 0) {
6774                 if (ulval > 65535) {
6775                         yyerror("illegal port value %lu", ulval);
6776                         return (-1);
6777                 }
6778                 return (htons(ulval));
6779         } else {
6780                 s = getservbyname(n, "tcp");
6781                 if (s == NULL)
6782                         s = getservbyname(n, "udp");
6783                 if (s == NULL) {
6784                         yyerror("unknown port %s", n);
6785                         return (-1);
6786                 }
6787                 return (s->s_port);
6788         }
6789 }
6790
6791 int
6792 rule_label(struct pfctl_rule *r, char *s[PF_RULE_MAX_LABEL_COUNT])
6793 {
6794         for (int i = 0; i < PF_RULE_MAX_LABEL_COUNT; i++) {
6795                 if (s[i] == NULL)
6796                         return (0);
6797
6798                 if (strlcpy(r->label[i], s[i], sizeof(r->label[0])) >=
6799                     sizeof(r->label[0])) {
6800                         yyerror("rule label too long (max %d chars)",
6801                             sizeof(r->label[0])-1);
6802                         return (-1);
6803                 }
6804         }
6805         return (0);
6806 }
6807
6808 u_int16_t
6809 parseicmpspec(char *w, sa_family_t af)
6810 {
6811         const struct icmpcodeent        *p;
6812         u_long                           ulval;
6813         u_int8_t                         icmptype;
6814
6815         if (af == AF_INET)
6816                 icmptype = returnicmpdefault >> 8;
6817         else
6818                 icmptype = returnicmp6default >> 8;
6819
6820         if (atoul(w, &ulval) == -1) {
6821                 if ((p = geticmpcodebyname(icmptype, w, af)) == NULL) {
6822                         yyerror("unknown icmp code %s", w);
6823                         return (0);
6824                 }
6825                 ulval = p->code;
6826         }
6827         if (ulval > 255) {
6828                 yyerror("invalid icmp code %lu", ulval);
6829                 return (0);
6830         }
6831         return (icmptype << 8 | ulval);
6832 }
6833
6834 int
6835 parseport(char *port, struct range *r, int extensions)
6836 {
6837         char    *p = strchr(port, ':');
6838
6839         if (p == NULL) {
6840                 if ((r->a = getservice(port)) == -1)
6841                         return (-1);
6842                 r->b = 0;
6843                 r->t = PF_OP_NONE;
6844                 return (0);
6845         }
6846         if ((extensions & PPORT_STAR) && !strcmp(p+1, "*")) {
6847                 *p = 0;
6848                 if ((r->a = getservice(port)) == -1)
6849                         return (-1);
6850                 r->b = 0;
6851                 r->t = PF_OP_IRG;
6852                 return (0);
6853         }
6854         if ((extensions & PPORT_RANGE)) {
6855                 *p++ = 0;
6856                 if ((r->a = getservice(port)) == -1 ||
6857                     (r->b = getservice(p)) == -1)
6858                         return (-1);
6859                 if (r->a == r->b) {
6860                         r->b = 0;
6861                         r->t = PF_OP_NONE;
6862                 } else
6863                         r->t = PF_OP_RRG;
6864                 return (0);
6865         }
6866         return (-1);
6867 }
6868
6869 int
6870 pfctl_load_anchors(int dev, struct pfctl *pf, struct pfr_buffer *trans)
6871 {
6872         struct loadanchors      *la;
6873
6874         TAILQ_FOREACH(la, &loadanchorshead, entries) {
6875                 if (pf->opts & PF_OPT_VERBOSE)
6876                         fprintf(stderr, "\nLoading anchor %s from %s\n",
6877                             la->anchorname, la->filename);
6878                 if (pfctl_rules(dev, la->filename, pf->opts, pf->optimize,
6879                     la->anchorname, trans) == -1)
6880                         return (-1);
6881         }
6882
6883         return (0);
6884 }
6885
6886 int
6887 kw_casecmp(const void *k, const void *e)
6888 {
6889         return (strcasecmp(k, ((const struct keywords *)e)->k_name));
6890 }
6891
6892 int
6893 map_tos(char *s, int *val)
6894 {
6895         /* DiffServ Codepoints and other TOS mappings */
6896         const struct keywords    toswords[] = {
6897                 { "af11",               IPTOS_DSCP_AF11 },
6898                 { "af12",               IPTOS_DSCP_AF12 },
6899                 { "af13",               IPTOS_DSCP_AF13 },
6900                 { "af21",               IPTOS_DSCP_AF21 },
6901                 { "af22",               IPTOS_DSCP_AF22 },
6902                 { "af23",               IPTOS_DSCP_AF23 },
6903                 { "af31",               IPTOS_DSCP_AF31 },
6904                 { "af32",               IPTOS_DSCP_AF32 },
6905                 { "af33",               IPTOS_DSCP_AF33 },
6906                 { "af41",               IPTOS_DSCP_AF41 },
6907                 { "af42",               IPTOS_DSCP_AF42 },
6908                 { "af43",               IPTOS_DSCP_AF43 },
6909                 { "critical",           IPTOS_PREC_CRITIC_ECP },
6910                 { "cs0",                IPTOS_DSCP_CS0 },
6911                 { "cs1",                IPTOS_DSCP_CS1 },
6912                 { "cs2",                IPTOS_DSCP_CS2 },
6913                 { "cs3",                IPTOS_DSCP_CS3 },
6914                 { "cs4",                IPTOS_DSCP_CS4 },
6915                 { "cs5",                IPTOS_DSCP_CS5 },
6916                 { "cs6",                IPTOS_DSCP_CS6 },
6917                 { "cs7",                IPTOS_DSCP_CS7 },
6918                 { "ef",                 IPTOS_DSCP_EF },
6919                 { "inetcontrol",        IPTOS_PREC_INTERNETCONTROL },
6920                 { "lowdelay",           IPTOS_LOWDELAY },
6921                 { "netcontrol",         IPTOS_PREC_NETCONTROL },
6922                 { "reliability",        IPTOS_RELIABILITY },
6923                 { "throughput",         IPTOS_THROUGHPUT },
6924                 { "va",                 IPTOS_DSCP_VA }
6925         };
6926         const struct keywords   *p;
6927
6928         p = bsearch(s, toswords, sizeof(toswords)/sizeof(toswords[0]),
6929             sizeof(toswords[0]), kw_casecmp);
6930
6931         if (p) {
6932                 *val = p->k_val;
6933                 return (1);
6934         }
6935         return (0);
6936 }
6937
6938 int
6939 rt_tableid_max(void)
6940 {
6941 #ifdef __FreeBSD__
6942         int fibs;
6943         size_t l = sizeof(fibs);
6944
6945         if (sysctlbyname("net.fibs", &fibs, &l, NULL, 0) == -1)
6946                 fibs = 16;      /* XXX RT_MAXFIBS, at least limit it some. */
6947         /*
6948          * As the OpenBSD code only compares > and not >= we need to adjust
6949          * here given we only accept values of 0..n and want to avoid #ifdefs
6950          * in the grammar.
6951          */
6952         return (fibs - 1);
6953 #else
6954         return (RT_TABLEID_MAX);
6955 #endif
6956 }
6957
6958 struct node_mac*
6959 node_mac_from_string(const char *str)
6960 {
6961         struct node_mac *m;
6962
6963         m = calloc(1, sizeof(struct node_mac));
6964         if (m == NULL)
6965                 err(1, "mac: calloc");
6966
6967         if (sscanf(str, "%02hhx:%02hhx:%02hhx:%02hhx:%02hhx:%02hhx",
6968             &m->mac[0], &m->mac[1], &m->mac[2], &m->mac[3], &m->mac[4],
6969             &m->mac[5]) != 6) {
6970                 free(m);
6971                 yyerror("invalid MAC address");
6972                 return (NULL);
6973         }
6974
6975         memset(m->mask, 0xff, ETHER_ADDR_LEN);
6976         m->isset = true;
6977         m->next = NULL;
6978         m->tail = m;
6979
6980         return (m);
6981 }
6982
6983 struct node_mac*
6984 node_mac_from_string_masklen(const char *str, int masklen)
6985 {
6986         struct node_mac *m;
6987
6988         if (masklen < 0 || masklen > (ETHER_ADDR_LEN * 8)) {
6989                 yyerror("invalid MAC mask length");
6990                 return (NULL);
6991         }
6992
6993         m = node_mac_from_string(str);
6994         if (m == NULL)
6995                 return (NULL);
6996
6997         memset(m->mask, 0, ETHER_ADDR_LEN);
6998         for (int i = 0; i < masklen; i++)
6999                 m->mask[i / 8] |= 1 << (i % 8);
7000
7001         return (m);
7002 }
7003
7004 struct node_mac*
7005 node_mac_from_string_mask(const char *str, const char *mask)
7006 {
7007         struct node_mac *m;
7008
7009         m = node_mac_from_string(str);
7010         if (m == NULL)
7011                 return (NULL);
7012
7013         if (sscanf(mask, "%02hhx:%02hhx:%02hhx:%02hhx:%02hhx:%02hhx",
7014             &m->mask[0], &m->mask[1], &m->mask[2], &m->mask[3], &m->mask[4],
7015             &m->mask[5]) != 6) {
7016                 free(m);
7017                 yyerror("invalid MAC mask");
7018                 return (NULL);
7019         }
7020
7021         return (m);
7022 }