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