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