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