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