1 /* $OpenBSD: parse.y,v 1.554 2008/10/17 12:59:53 henning Exp $ */ 2 3 /*- 4 * SPDX-License-Identifier: BSD-2-Clause 5 * 6 * Copyright (c) 2001 Markus Friedl. All rights reserved. 7 * Copyright (c) 2001 Daniel Hartmeier. All rights reserved. 8 * Copyright (c) 2001 Theo de Raadt. All rights reserved. 9 * Copyright (c) 2002,2003 Henning Brauer. All rights reserved. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 21 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 22 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 23 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 24 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 25 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 26 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 27 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 28 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 29 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 30 */ 31 %{ 32 #include <sys/cdefs.h> 33 __FBSDID("$FreeBSD$"); 34 35 #define PFIOC_USE_LATEST 36 37 #include <sys/types.h> 38 #include <sys/socket.h> 39 #include <sys/stat.h> 40 #ifdef __FreeBSD__ 41 #include <sys/sysctl.h> 42 #endif 43 #include <net/if.h> 44 #include <netinet/in.h> 45 #include <netinet/in_systm.h> 46 #include <netinet/ip.h> 47 #include <netinet/ip_icmp.h> 48 #include <netinet/icmp6.h> 49 #include <net/pfvar.h> 50 #include <arpa/inet.h> 51 #include <net/altq/altq.h> 52 #include <net/altq/altq_cbq.h> 53 #include <net/altq/altq_codel.h> 54 #include <net/altq/altq_priq.h> 55 #include <net/altq/altq_hfsc.h> 56 #include <net/altq/altq_fairq.h> 57 58 #include <assert.h> 59 #include <stdio.h> 60 #include <unistd.h> 61 #include <stdlib.h> 62 #include <netdb.h> 63 #include <stdarg.h> 64 #include <errno.h> 65 #include <string.h> 66 #include <ctype.h> 67 #include <math.h> 68 #include <err.h> 69 #include <limits.h> 70 #include <pwd.h> 71 #include <grp.h> 72 #include <md5.h> 73 74 #include "pfctl_parser.h" 75 #include "pfctl.h" 76 77 static struct pfctl *pf = NULL; 78 static int debug = 0; 79 static int rulestate = 0; 80 static u_int16_t returnicmpdefault = 81 (ICMP_UNREACH << 8) | ICMP_UNREACH_PORT; 82 static u_int16_t returnicmp6default = 83 (ICMP6_DST_UNREACH << 8) | ICMP6_DST_UNREACH_NOPORT; 84 static int blockpolicy = PFRULE_DROP; 85 static int failpolicy = PFRULE_DROP; 86 static int require_order = 1; 87 static int default_statelock; 88 89 static TAILQ_HEAD(files, file) files = TAILQ_HEAD_INITIALIZER(files); 90 static struct file { 91 TAILQ_ENTRY(file) entry; 92 FILE *stream; 93 char *name; 94 int lineno; 95 int errors; 96 } *file; 97 struct file *pushfile(const char *, int); 98 int popfile(void); 99 int check_file_secrecy(int, const char *); 100 int yyparse(void); 101 int yylex(void); 102 int yyerror(const char *, ...); 103 int kw_cmp(const void *, const void *); 104 int lookup(char *); 105 int lgetc(int); 106 int lungetc(int); 107 int findeol(void); 108 109 static TAILQ_HEAD(symhead, sym) symhead = TAILQ_HEAD_INITIALIZER(symhead); 110 struct sym { 111 TAILQ_ENTRY(sym) entry; 112 int used; 113 int persist; 114 char *nam; 115 char *val; 116 }; 117 int symset(const char *, const char *, int); 118 char *symget(const char *); 119 120 int atoul(char *, u_long *); 121 122 enum { 123 PFCTL_STATE_NONE, 124 PFCTL_STATE_OPTION, 125 PFCTL_STATE_ETHER, 126 PFCTL_STATE_SCRUB, 127 PFCTL_STATE_QUEUE, 128 PFCTL_STATE_NAT, 129 PFCTL_STATE_FILTER 130 }; 131 132 struct node_etherproto { 133 u_int16_t proto; 134 struct node_etherproto *next; 135 struct node_etherproto *tail; 136 }; 137 138 struct node_proto { 139 u_int8_t proto; 140 struct node_proto *next; 141 struct node_proto *tail; 142 }; 143 144 struct node_port { 145 u_int16_t port[2]; 146 u_int8_t op; 147 struct node_port *next; 148 struct node_port *tail; 149 }; 150 151 struct node_uid { 152 uid_t uid[2]; 153 u_int8_t op; 154 struct node_uid *next; 155 struct node_uid *tail; 156 }; 157 158 struct node_gid { 159 gid_t gid[2]; 160 u_int8_t op; 161 struct node_gid *next; 162 struct node_gid *tail; 163 }; 164 165 struct node_icmp { 166 u_int8_t code; 167 u_int8_t type; 168 u_int8_t proto; 169 struct node_icmp *next; 170 struct node_icmp *tail; 171 }; 172 173 enum { PF_STATE_OPT_MAX, PF_STATE_OPT_NOSYNC, PF_STATE_OPT_SRCTRACK, 174 PF_STATE_OPT_MAX_SRC_STATES, PF_STATE_OPT_MAX_SRC_CONN, 175 PF_STATE_OPT_MAX_SRC_CONN_RATE, PF_STATE_OPT_MAX_SRC_NODES, 176 PF_STATE_OPT_OVERLOAD, PF_STATE_OPT_STATELOCK, 177 PF_STATE_OPT_TIMEOUT, PF_STATE_OPT_SLOPPY, }; 178 179 enum { PF_SRCTRACK_NONE, PF_SRCTRACK, PF_SRCTRACK_GLOBAL, PF_SRCTRACK_RULE }; 180 181 struct node_state_opt { 182 int type; 183 union { 184 u_int32_t max_states; 185 u_int32_t max_src_states; 186 u_int32_t max_src_conn; 187 struct { 188 u_int32_t limit; 189 u_int32_t seconds; 190 } max_src_conn_rate; 191 struct { 192 u_int8_t flush; 193 char tblname[PF_TABLE_NAME_SIZE]; 194 } overload; 195 u_int32_t max_src_nodes; 196 u_int8_t src_track; 197 u_int32_t statelock; 198 struct { 199 int number; 200 u_int32_t seconds; 201 } timeout; 202 } data; 203 struct node_state_opt *next; 204 struct node_state_opt *tail; 205 }; 206 207 struct peer { 208 struct node_host *host; 209 struct node_port *port; 210 }; 211 212 static struct node_queue { 213 char queue[PF_QNAME_SIZE]; 214 char parent[PF_QNAME_SIZE]; 215 char ifname[IFNAMSIZ]; 216 int scheduler; 217 struct node_queue *next; 218 struct node_queue *tail; 219 } *queues = NULL; 220 221 struct node_qassign { 222 char *qname; 223 char *pqname; 224 }; 225 226 static struct filter_opts { 227 int marker; 228 #define FOM_FLAGS 0x01 229 #define FOM_ICMP 0x02 230 #define FOM_TOS 0x04 231 #define FOM_KEEP 0x08 232 #define FOM_SRCTRACK 0x10 233 #define FOM_SETPRIO 0x0400 234 #define FOM_PRIO 0x2000 235 struct node_uid *uid; 236 struct node_gid *gid; 237 struct { 238 u_int8_t b1; 239 u_int8_t b2; 240 u_int16_t w; 241 u_int16_t w2; 242 } flags; 243 struct node_icmp *icmpspec; 244 u_int32_t tos; 245 u_int32_t prob; 246 u_int32_t ridentifier; 247 struct { 248 int action; 249 struct node_state_opt *options; 250 } keep; 251 int fragment; 252 int allowopts; 253 char *label[PF_RULE_MAX_LABEL_COUNT]; 254 int labelcount; 255 struct node_qassign queues; 256 char *tag; 257 char *match_tag; 258 u_int8_t match_tag_not; 259 u_int16_t dnpipe; 260 u_int16_t dnrpipe; 261 u_int32_t free_flags; 262 u_int rtableid; 263 u_int8_t prio; 264 u_int8_t set_prio[2]; 265 struct { 266 struct node_host *addr; 267 u_int16_t port; 268 } divert; 269 } filter_opts; 270 271 static struct antispoof_opts { 272 char *label[PF_RULE_MAX_LABEL_COUNT]; 273 int labelcount; 274 u_int32_t ridentifier; 275 u_int rtableid; 276 } antispoof_opts; 277 278 static struct scrub_opts { 279 int marker; 280 #define SOM_MINTTL 0x01 281 #define SOM_MAXMSS 0x02 282 #define SOM_FRAGCACHE 0x04 283 #define SOM_SETTOS 0x08 284 int nodf; 285 int minttl; 286 int maxmss; 287 int settos; 288 int fragcache; 289 int randomid; 290 int reassemble_tcp; 291 char *match_tag; 292 u_int8_t match_tag_not; 293 u_int rtableid; 294 } scrub_opts; 295 296 static struct queue_opts { 297 int marker; 298 #define QOM_BWSPEC 0x01 299 #define QOM_SCHEDULER 0x02 300 #define QOM_PRIORITY 0x04 301 #define QOM_TBRSIZE 0x08 302 #define QOM_QLIMIT 0x10 303 struct node_queue_bw queue_bwspec; 304 struct node_queue_opt scheduler; 305 int priority; 306 unsigned int tbrsize; 307 int qlimit; 308 } queue_opts; 309 310 static struct table_opts { 311 int flags; 312 int init_addr; 313 struct node_tinithead init_nodes; 314 } table_opts; 315 316 static struct pool_opts { 317 int marker; 318 #define POM_TYPE 0x01 319 #define POM_STICKYADDRESS 0x02 320 u_int8_t opts; 321 int type; 322 int staticport; 323 struct pf_poolhashkey *key; 324 struct pf_mape_portset mape; 325 326 } pool_opts; 327 328 static struct codel_opts codel_opts; 329 static struct node_hfsc_opts hfsc_opts; 330 static struct node_fairq_opts fairq_opts; 331 static struct node_state_opt *keep_state_defaults = NULL; 332 static struct pfctl_watermarks syncookie_opts; 333 334 int disallow_table(struct node_host *, const char *); 335 int disallow_urpf_failed(struct node_host *, const char *); 336 int disallow_alias(struct node_host *, const char *); 337 int rule_consistent(struct pfctl_rule *, int); 338 int filter_consistent(struct pfctl_rule *, int); 339 int nat_consistent(struct pfctl_rule *); 340 int rdr_consistent(struct pfctl_rule *); 341 int process_tabledef(char *, struct table_opts *); 342 void expand_label_str(char *, size_t, const char *, const char *); 343 void expand_label_if(const char *, char *, size_t, const char *); 344 void expand_label_addr(const char *, char *, size_t, u_int8_t, 345 struct pf_rule_addr *); 346 void expand_label_port(const char *, char *, size_t, 347 struct pf_rule_addr *); 348 void expand_label_proto(const char *, char *, size_t, u_int8_t); 349 void expand_label_nr(const char *, char *, size_t, 350 struct pfctl_rule *); 351 void expand_eth_rule(struct pfctl_eth_rule *, 352 struct node_if *, struct node_etherproto *, 353 struct node_mac *, struct node_mac *, 354 struct node_host *, struct node_host *, const char *, 355 const char *); 356 void expand_rule(struct pfctl_rule *, struct node_if *, 357 struct node_host *, struct node_proto *, struct node_os *, 358 struct node_host *, struct node_port *, struct node_host *, 359 struct node_port *, struct node_uid *, struct node_gid *, 360 struct node_icmp *, const char *); 361 int expand_altq(struct pf_altq *, struct node_if *, 362 struct node_queue *, struct node_queue_bw bwspec, 363 struct node_queue_opt *); 364 int expand_queue(struct pf_altq *, struct node_if *, 365 struct node_queue *, struct node_queue_bw, 366 struct node_queue_opt *); 367 int expand_skip_interface(struct node_if *); 368 369 int check_rulestate(int); 370 int getservice(char *); 371 int rule_label(struct pfctl_rule *, char *s[PF_RULE_MAX_LABEL_COUNT]); 372 int rt_tableid_max(void); 373 374 void mv_rules(struct pfctl_ruleset *, struct pfctl_ruleset *); 375 void mv_eth_rules(struct pfctl_eth_ruleset *, struct pfctl_eth_ruleset *); 376 void decide_address_family(struct node_host *, sa_family_t *); 377 void remove_invalid_hosts(struct node_host **, sa_family_t *); 378 int invalid_redirect(struct node_host *, sa_family_t); 379 u_int16_t parseicmpspec(char *, sa_family_t); 380 int kw_casecmp(const void *, const void *); 381 int map_tos(char *string, int *); 382 struct node_mac* node_mac_from_string(const char *); 383 struct node_mac* node_mac_from_string_masklen(const char *, int); 384 struct node_mac* node_mac_from_string_mask(const char *, const char *); 385 386 static TAILQ_HEAD(loadanchorshead, loadanchors) 387 loadanchorshead = TAILQ_HEAD_INITIALIZER(loadanchorshead); 388 389 struct loadanchors { 390 TAILQ_ENTRY(loadanchors) entries; 391 char *anchorname; 392 char *filename; 393 }; 394 395 typedef struct { 396 union { 397 int64_t number; 398 double probability; 399 int i; 400 char *string; 401 u_int rtableid; 402 struct { 403 u_int8_t b1; 404 u_int8_t b2; 405 u_int16_t w; 406 u_int16_t w2; 407 } b; 408 struct range { 409 int a; 410 int b; 411 int t; 412 } range; 413 struct node_if *interface; 414 struct node_proto *proto; 415 struct node_etherproto *etherproto; 416 struct node_icmp *icmp; 417 struct node_host *host; 418 struct node_os *os; 419 struct node_port *port; 420 struct node_uid *uid; 421 struct node_gid *gid; 422 struct node_state_opt *state_opt; 423 struct peer peer; 424 struct { 425 struct peer src, dst; 426 struct node_os *src_os; 427 } fromto; 428 struct { 429 struct node_mac *src; 430 struct node_mac *dst; 431 } etherfromto; 432 struct node_mac *mac; 433 struct { 434 struct node_mac *mac; 435 } etheraddr; 436 char *bridge_to; 437 struct { 438 struct node_host *host; 439 u_int8_t rt; 440 u_int8_t pool_opts; 441 sa_family_t af; 442 struct pf_poolhashkey *key; 443 } route; 444 struct redirection { 445 struct node_host *host; 446 struct range rport; 447 } *redirection; 448 struct { 449 int action; 450 struct node_state_opt *options; 451 } keep_state; 452 struct { 453 u_int8_t log; 454 u_int8_t logif; 455 u_int8_t quick; 456 } logquick; 457 struct { 458 int neg; 459 char *name; 460 } tagged; 461 struct pf_poolhashkey *hashkey; 462 struct node_queue *queue; 463 struct node_queue_opt queue_options; 464 struct node_queue_bw queue_bwspec; 465 struct node_qassign qassign; 466 struct filter_opts filter_opts; 467 struct antispoof_opts antispoof_opts; 468 struct queue_opts queue_opts; 469 struct scrub_opts scrub_opts; 470 struct table_opts table_opts; 471 struct pool_opts pool_opts; 472 struct node_hfsc_opts hfsc_opts; 473 struct node_fairq_opts fairq_opts; 474 struct codel_opts codel_opts; 475 struct pfctl_watermarks *watermarks; 476 } v; 477 int lineno; 478 } YYSTYPE; 479 480 #define PPORT_RANGE 1 481 #define PPORT_STAR 2 482 int parseport(char *, struct range *r, int); 483 484 #define DYNIF_MULTIADDR(addr) ((addr).type == PF_ADDR_DYNIFTL && \ 485 (!((addr).iflags & PFI_AFLAG_NOALIAS) || \ 486 !isdigit((addr).v.ifname[strlen((addr).v.ifname)-1]))) 487 488 %} 489 490 %token PASS BLOCK MATCH SCRUB RETURN IN OS OUT LOG QUICK ON FROM TO FLAGS 491 %token RETURNRST RETURNICMP RETURNICMP6 PROTO INET INET6 ALL ANY ICMPTYPE 492 %token ICMP6TYPE CODE KEEP MODULATE STATE PORT RDR NAT BINAT ARROW NODF 493 %token MINTTL ERROR ALLOWOPTS FASTROUTE FILENAME ROUTETO DUPTO REPLYTO NO LABEL 494 %token NOROUTE URPFFAILED FRAGMENT USER GROUP MAXMSS MAXIMUM TTL TOS DROP TABLE 495 %token REASSEMBLE FRAGDROP FRAGCROP ANCHOR NATANCHOR RDRANCHOR BINATANCHOR 496 %token SET OPTIMIZATION TIMEOUT LIMIT LOGINTERFACE BLOCKPOLICY FAILPOLICY 497 %token RANDOMID REQUIREORDER SYNPROXY FINGERPRINTS NOSYNC DEBUG SKIP HOSTID 498 %token ANTISPOOF FOR INCLUDE KEEPCOUNTERS SYNCOOKIES L3 499 %token ETHER 500 %token BITMASK RANDOM SOURCEHASH ROUNDROBIN STATICPORT PROBABILITY MAPEPORTSET 501 %token ALTQ CBQ CODEL PRIQ HFSC FAIRQ BANDWIDTH TBRSIZE LINKSHARE REALTIME 502 %token UPPERLIMIT QUEUE PRIORITY QLIMIT HOGS BUCKETS RTABLE TARGET INTERVAL 503 %token DNPIPE DNQUEUE RIDENTIFIER 504 %token LOAD RULESET_OPTIMIZATION PRIO 505 %token STICKYADDRESS MAXSRCSTATES MAXSRCNODES SOURCETRACK GLOBAL RULE 506 %token MAXSRCCONN MAXSRCCONNRATE OVERLOAD FLUSH SLOPPY 507 %token TAGGED TAG IFBOUND FLOATING STATEPOLICY STATEDEFAULTS ROUTE SETTOS 508 %token DIVERTTO DIVERTREPLY BRIDGE_TO 509 %token <v.string> STRING 510 %token <v.number> NUMBER 511 %token <v.i> PORTBINARY 512 %type <v.interface> interface if_list if_item_not if_item 513 %type <v.number> number icmptype icmp6type uid gid 514 %type <v.number> tos not yesno 515 %type <v.probability> probability 516 %type <v.i> no dir af fragcache optimizer syncookie_val 517 %type <v.i> sourcetrack flush unaryop statelock 518 %type <v.i> etherprotoval 519 %type <v.b> action nataction natpasslog scrubaction 520 %type <v.b> flags flag blockspec prio 521 %type <v.range> portplain portstar portrange 522 %type <v.hashkey> hashkey 523 %type <v.proto> proto proto_list proto_item 524 %type <v.number> protoval 525 %type <v.icmp> icmpspec 526 %type <v.icmp> icmp_list icmp_item 527 %type <v.icmp> icmp6_list icmp6_item 528 %type <v.number> reticmpspec reticmp6spec 529 %type <v.fromto> fromto l3fromto 530 %type <v.peer> ipportspec from to 531 %type <v.host> ipspec toipspec xhost host dynaddr host_list 532 %type <v.host> redir_host_list redirspec 533 %type <v.host> route_host route_host_list routespec 534 %type <v.os> os xos os_list 535 %type <v.port> portspec port_list port_item 536 %type <v.uid> uids uid_list uid_item 537 %type <v.gid> gids gid_list gid_item 538 %type <v.route> route 539 %type <v.redirection> redirection redirpool 540 %type <v.string> label stringall tag anchorname 541 %type <v.string> string varstring numberstring 542 %type <v.keep_state> keep 543 %type <v.state_opt> state_opt_spec state_opt_list state_opt_item 544 %type <v.logquick> logquick quick log logopts logopt 545 %type <v.interface> antispoof_ifspc antispoof_iflst antispoof_if 546 %type <v.qassign> qname etherqname 547 %type <v.queue> qassign qassign_list qassign_item 548 %type <v.queue_options> scheduler 549 %type <v.number> cbqflags_list cbqflags_item 550 %type <v.number> priqflags_list priqflags_item 551 %type <v.hfsc_opts> hfscopts_list hfscopts_item hfsc_opts 552 %type <v.fairq_opts> fairqopts_list fairqopts_item fairq_opts 553 %type <v.codel_opts> codelopts_list codelopts_item codel_opts 554 %type <v.queue_bwspec> bandwidth 555 %type <v.filter_opts> filter_opts filter_opt filter_opts_l etherfilter_opts etherfilter_opt etherfilter_opts_l 556 %type <v.filter_opts> filter_sets filter_set filter_sets_l 557 %type <v.antispoof_opts> antispoof_opts antispoof_opt antispoof_opts_l 558 %type <v.queue_opts> queue_opts queue_opt queue_opts_l 559 %type <v.scrub_opts> scrub_opts scrub_opt scrub_opts_l 560 %type <v.table_opts> table_opts table_opt table_opts_l 561 %type <v.pool_opts> pool_opts pool_opt pool_opts_l 562 %type <v.tagged> tagged 563 %type <v.rtableid> rtable 564 %type <v.watermarks> syncookie_opts 565 %type <v.etherproto> etherproto etherproto_list etherproto_item 566 %type <v.etherfromto> etherfromto 567 %type <v.etheraddr> etherfrom etherto 568 %type <v.bridge_to> bridge 569 %type <v.mac> xmac mac mac_list macspec 570 %% 571 572 ruleset : /* empty */ 573 | ruleset include '\n' 574 | ruleset '\n' 575 | ruleset option '\n' 576 | ruleset etherrule '\n' 577 | ruleset etheranchorrule '\n' 578 | ruleset scrubrule '\n' 579 | ruleset natrule '\n' 580 | ruleset binatrule '\n' 581 | ruleset pfrule '\n' 582 | ruleset anchorrule '\n' 583 | ruleset loadrule '\n' 584 | ruleset altqif '\n' 585 | ruleset queuespec '\n' 586 | ruleset varset '\n' 587 | ruleset antispoof '\n' 588 | ruleset tabledef '\n' 589 | '{' fakeanchor '}' '\n'; 590 | ruleset error '\n' { file->errors++; } 591 ; 592 593 include : INCLUDE STRING { 594 struct file *nfile; 595 596 if ((nfile = pushfile($2, 0)) == NULL) { 597 yyerror("failed to include file %s", $2); 598 free($2); 599 YYERROR; 600 } 601 free($2); 602 603 file = nfile; 604 lungetc('\n'); 605 } 606 ; 607 608 /* 609 * apply to previouslys specified rule: must be careful to note 610 * what that is: pf or nat or binat or rdr 611 */ 612 fakeanchor : fakeanchor '\n' 613 | fakeanchor anchorrule '\n' 614 | fakeanchor binatrule '\n' 615 | fakeanchor natrule '\n' 616 | fakeanchor pfrule '\n' 617 | fakeanchor error '\n' 618 ; 619 620 optimizer : string { 621 if (!strcmp($1, "none")) 622 $$ = 0; 623 else if (!strcmp($1, "basic")) 624 $$ = PF_OPTIMIZE_BASIC; 625 else if (!strcmp($1, "profile")) 626 $$ = PF_OPTIMIZE_BASIC | PF_OPTIMIZE_PROFILE; 627 else { 628 yyerror("unknown ruleset-optimization %s", $1); 629 YYERROR; 630 } 631 } 632 ; 633 634 option : SET OPTIMIZATION STRING { 635 if (check_rulestate(PFCTL_STATE_OPTION)) { 636 free($3); 637 YYERROR; 638 } 639 if (pfctl_set_optimization(pf, $3) != 0) { 640 yyerror("unknown optimization %s", $3); 641 free($3); 642 YYERROR; 643 } 644 free($3); 645 } 646 | SET RULESET_OPTIMIZATION optimizer { 647 if (!(pf->opts & PF_OPT_OPTIMIZE)) { 648 pf->opts |= PF_OPT_OPTIMIZE; 649 pf->optimize = $3; 650 } 651 } 652 | SET TIMEOUT timeout_spec 653 | SET TIMEOUT '{' optnl timeout_list '}' 654 | SET LIMIT limit_spec 655 | SET LIMIT '{' optnl limit_list '}' 656 | SET LOGINTERFACE stringall { 657 if (check_rulestate(PFCTL_STATE_OPTION)) { 658 free($3); 659 YYERROR; 660 } 661 if (pfctl_set_logif(pf, $3) != 0) { 662 yyerror("error setting loginterface %s", $3); 663 free($3); 664 YYERROR; 665 } 666 free($3); 667 } 668 | SET HOSTID number { 669 if ($3 == 0 || $3 > UINT_MAX) { 670 yyerror("hostid must be non-zero"); 671 YYERROR; 672 } 673 if (pfctl_set_hostid(pf, $3) != 0) { 674 yyerror("error setting hostid %08x", $3); 675 YYERROR; 676 } 677 } 678 | SET BLOCKPOLICY DROP { 679 if (pf->opts & PF_OPT_VERBOSE) 680 printf("set block-policy drop\n"); 681 if (check_rulestate(PFCTL_STATE_OPTION)) 682 YYERROR; 683 blockpolicy = PFRULE_DROP; 684 } 685 | SET BLOCKPOLICY RETURN { 686 if (pf->opts & PF_OPT_VERBOSE) 687 printf("set block-policy return\n"); 688 if (check_rulestate(PFCTL_STATE_OPTION)) 689 YYERROR; 690 blockpolicy = PFRULE_RETURN; 691 } 692 | SET FAILPOLICY DROP { 693 if (pf->opts & PF_OPT_VERBOSE) 694 printf("set fail-policy drop\n"); 695 if (check_rulestate(PFCTL_STATE_OPTION)) 696 YYERROR; 697 failpolicy = PFRULE_DROP; 698 } 699 | SET FAILPOLICY RETURN { 700 if (pf->opts & PF_OPT_VERBOSE) 701 printf("set fail-policy return\n"); 702 if (check_rulestate(PFCTL_STATE_OPTION)) 703 YYERROR; 704 failpolicy = PFRULE_RETURN; 705 } 706 | SET REQUIREORDER yesno { 707 if (pf->opts & PF_OPT_VERBOSE) 708 printf("set require-order %s\n", 709 $3 == 1 ? "yes" : "no"); 710 require_order = $3; 711 } 712 | SET FINGERPRINTS STRING { 713 if (pf->opts & PF_OPT_VERBOSE) 714 printf("set fingerprints \"%s\"\n", $3); 715 if (check_rulestate(PFCTL_STATE_OPTION)) { 716 free($3); 717 YYERROR; 718 } 719 if (!pf->anchor->name[0]) { 720 if (pfctl_file_fingerprints(pf->dev, 721 pf->opts, $3)) { 722 yyerror("error loading " 723 "fingerprints %s", $3); 724 free($3); 725 YYERROR; 726 } 727 } 728 free($3); 729 } 730 | SET STATEPOLICY statelock { 731 if (pf->opts & PF_OPT_VERBOSE) 732 switch ($3) { 733 case 0: 734 printf("set state-policy floating\n"); 735 break; 736 case PFRULE_IFBOUND: 737 printf("set state-policy if-bound\n"); 738 break; 739 } 740 default_statelock = $3; 741 } 742 | SET DEBUG STRING { 743 if (check_rulestate(PFCTL_STATE_OPTION)) { 744 free($3); 745 YYERROR; 746 } 747 if (pfctl_set_debug(pf, $3) != 0) { 748 yyerror("error setting debuglevel %s", $3); 749 free($3); 750 YYERROR; 751 } 752 free($3); 753 } 754 | SET SKIP interface { 755 if (expand_skip_interface($3) != 0) { 756 yyerror("error setting skip interface(s)"); 757 YYERROR; 758 } 759 } 760 | SET STATEDEFAULTS state_opt_list { 761 if (keep_state_defaults != NULL) { 762 yyerror("cannot redefine state-defaults"); 763 YYERROR; 764 } 765 keep_state_defaults = $3; 766 } 767 | SET KEEPCOUNTERS { 768 pf->keep_counters = true; 769 } 770 | SET SYNCOOKIES syncookie_val syncookie_opts { 771 if (pfctl_cfg_syncookies(pf, $3, $4)) { 772 yyerror("error setting syncookies"); 773 YYERROR; 774 } 775 } 776 ; 777 778 syncookie_val : STRING { 779 if (!strcmp($1, "never")) 780 $$ = PFCTL_SYNCOOKIES_NEVER; 781 else if (!strcmp($1, "adaptive")) 782 $$ = PFCTL_SYNCOOKIES_ADAPTIVE; 783 else if (!strcmp($1, "always")) 784 $$ = PFCTL_SYNCOOKIES_ALWAYS; 785 else { 786 yyerror("illegal value for syncookies"); 787 YYERROR; 788 } 789 } 790 ; 791 syncookie_opts : /* empty */ { $$ = NULL; } 792 | { 793 memset(&syncookie_opts, 0, sizeof(syncookie_opts)); 794 } '(' syncookie_opt_l ')' { $$ = &syncookie_opts; } 795 ; 796 797 syncookie_opt_l : syncookie_opt_l comma syncookie_opt 798 | syncookie_opt 799 ; 800 801 syncookie_opt : STRING STRING { 802 double val; 803 char *cp; 804 805 val = strtod($2, &cp); 806 if (cp == NULL || strcmp(cp, "%")) 807 YYERROR; 808 if (val <= 0 || val > 100) { 809 yyerror("illegal percentage value"); 810 YYERROR; 811 } 812 if (!strcmp($1, "start")) { 813 syncookie_opts.hi = val; 814 } else if (!strcmp($1, "end")) { 815 syncookie_opts.lo = val; 816 } else { 817 yyerror("illegal syncookie option"); 818 YYERROR; 819 } 820 } 821 ; 822 823 stringall : STRING { $$ = $1; } 824 | ALL { 825 if (($$ = strdup("all")) == NULL) { 826 err(1, "stringall: strdup"); 827 } 828 } 829 ; 830 831 string : STRING string { 832 if (asprintf(&$$, "%s %s", $1, $2) == -1) 833 err(1, "string: asprintf"); 834 free($1); 835 free($2); 836 } 837 | STRING 838 ; 839 840 varstring : numberstring varstring { 841 if (asprintf(&$$, "%s %s", $1, $2) == -1) 842 err(1, "string: asprintf"); 843 free($1); 844 free($2); 845 } 846 | numberstring 847 ; 848 849 numberstring : NUMBER { 850 char *s; 851 if (asprintf(&s, "%lld", (long long)$1) == -1) { 852 yyerror("string: asprintf"); 853 YYERROR; 854 } 855 $$ = s; 856 } 857 | STRING 858 ; 859 860 varset : STRING '=' varstring { 861 char *s = $1; 862 if (pf->opts & PF_OPT_VERBOSE) 863 printf("%s = \"%s\"\n", $1, $3); 864 while (*s++) { 865 if (isspace((unsigned char)*s)) { 866 yyerror("macro name cannot contain " 867 "whitespace"); 868 YYERROR; 869 } 870 } 871 if (symset($1, $3, 0) == -1) 872 err(1, "cannot store variable %s", $1); 873 free($1); 874 free($3); 875 } 876 ; 877 878 anchorname : STRING { $$ = $1; } 879 | /* empty */ { $$ = NULL; } 880 ; 881 882 pfa_anchorlist : /* empty */ 883 | pfa_anchorlist '\n' 884 | pfa_anchorlist pfrule '\n' 885 | pfa_anchorlist anchorrule '\n' 886 ; 887 888 pfa_anchor : '{' 889 { 890 char ta[PF_ANCHOR_NAME_SIZE]; 891 struct pfctl_ruleset *rs; 892 893 /* stepping into a brace anchor */ 894 pf->asd++; 895 pf->bn++; 896 897 /* 898 * Anchor contents are parsed before the anchor rule 899 * production completes, so we don't know the real 900 * location yet. Create a holding ruleset in the root; 901 * contents will be moved afterwards. 902 */ 903 snprintf(ta, PF_ANCHOR_NAME_SIZE, "_%d", pf->bn); 904 rs = pf_find_or_create_ruleset(ta); 905 if (rs == NULL) 906 err(1, "pfa_anchor: pf_find_or_create_ruleset"); 907 pf->astack[pf->asd] = rs->anchor; 908 pf->anchor = rs->anchor; 909 } '\n' pfa_anchorlist '}' 910 { 911 pf->alast = pf->anchor; 912 pf->asd--; 913 pf->anchor = pf->astack[pf->asd]; 914 } 915 | /* empty */ 916 ; 917 918 anchorrule : ANCHOR anchorname dir quick interface af proto fromto 919 filter_opts pfa_anchor 920 { 921 struct pfctl_rule r; 922 struct node_proto *proto; 923 924 if (check_rulestate(PFCTL_STATE_FILTER)) { 925 if ($2) 926 free($2); 927 YYERROR; 928 } 929 930 if ($2 && ($2[0] == '_' || strstr($2, "/_") != NULL)) { 931 free($2); 932 yyerror("anchor names beginning with '_' " 933 "are reserved for internal use"); 934 YYERROR; 935 } 936 937 memset(&r, 0, sizeof(r)); 938 if (pf->astack[pf->asd + 1]) { 939 if ($2 && strchr($2, '/') != NULL) { 940 free($2); 941 yyerror("anchor paths containing '/' " 942 "cannot be used for inline anchors."); 943 YYERROR; 944 } 945 946 /* Move inline rules into relative location. */ 947 pfctl_anchor_setup(&r, 948 &pf->astack[pf->asd]->ruleset, 949 $2 ? $2 : pf->alast->name); 950 951 if (r.anchor == NULL) 952 err(1, "anchorrule: unable to " 953 "create ruleset"); 954 955 if (pf->alast != r.anchor) { 956 if (r.anchor->match) { 957 yyerror("inline anchor '%s' " 958 "already exists", 959 r.anchor->name); 960 YYERROR; 961 } 962 mv_rules(&pf->alast->ruleset, 963 &r.anchor->ruleset); 964 } 965 pf_remove_if_empty_ruleset(&pf->alast->ruleset); 966 pf->alast = r.anchor; 967 } else { 968 if (!$2) { 969 yyerror("anchors without explicit " 970 "rules must specify a name"); 971 YYERROR; 972 } 973 } 974 r.direction = $3; 975 r.quick = $4.quick; 976 r.af = $6; 977 r.prob = $9.prob; 978 r.rtableid = $9.rtableid; 979 r.ridentifier = $9.ridentifier; 980 981 if ($9.tag) 982 if (strlcpy(r.tagname, $9.tag, 983 PF_TAG_NAME_SIZE) >= PF_TAG_NAME_SIZE) { 984 yyerror("tag too long, max %u chars", 985 PF_TAG_NAME_SIZE - 1); 986 YYERROR; 987 } 988 if ($9.match_tag) 989 if (strlcpy(r.match_tagname, $9.match_tag, 990 PF_TAG_NAME_SIZE) >= PF_TAG_NAME_SIZE) { 991 yyerror("tag too long, max %u chars", 992 PF_TAG_NAME_SIZE - 1); 993 YYERROR; 994 } 995 r.match_tag_not = $9.match_tag_not; 996 if (rule_label(&r, $9.label)) 997 YYERROR; 998 for (int i = 0; i < PF_RULE_MAX_LABEL_COUNT; i++) 999 free($9.label[i]); 1000 r.flags = $9.flags.b1; 1001 r.flagset = $9.flags.b2; 1002 if (($9.flags.b1 & $9.flags.b2) != $9.flags.b1) { 1003 yyerror("flags always false"); 1004 YYERROR; 1005 } 1006 if ($9.flags.b1 || $9.flags.b2 || $8.src_os) { 1007 for (proto = $7; proto != NULL && 1008 proto->proto != IPPROTO_TCP; 1009 proto = proto->next) 1010 ; /* nothing */ 1011 if (proto == NULL && $7 != NULL) { 1012 if ($9.flags.b1 || $9.flags.b2) 1013 yyerror( 1014 "flags only apply to tcp"); 1015 if ($8.src_os) 1016 yyerror( 1017 "OS fingerprinting only " 1018 "applies to tcp"); 1019 YYERROR; 1020 } 1021 } 1022 1023 r.tos = $9.tos; 1024 1025 if ($9.keep.action) { 1026 yyerror("cannot specify state handling " 1027 "on anchors"); 1028 YYERROR; 1029 } 1030 1031 if ($9.match_tag) 1032 if (strlcpy(r.match_tagname, $9.match_tag, 1033 PF_TAG_NAME_SIZE) >= PF_TAG_NAME_SIZE) { 1034 yyerror("tag too long, max %u chars", 1035 PF_TAG_NAME_SIZE - 1); 1036 YYERROR; 1037 } 1038 r.match_tag_not = $9.match_tag_not; 1039 if ($9.marker & FOM_PRIO) { 1040 if ($9.prio == 0) 1041 r.prio = PF_PRIO_ZERO; 1042 else 1043 r.prio = $9.prio; 1044 } 1045 if ($9.marker & FOM_SETPRIO) { 1046 r.set_prio[0] = $9.set_prio[0]; 1047 r.set_prio[1] = $9.set_prio[1]; 1048 r.scrub_flags |= PFSTATE_SETPRIO; 1049 } 1050 1051 decide_address_family($8.src.host, &r.af); 1052 decide_address_family($8.dst.host, &r.af); 1053 1054 expand_rule(&r, $5, NULL, $7, $8.src_os, 1055 $8.src.host, $8.src.port, $8.dst.host, $8.dst.port, 1056 $9.uid, $9.gid, $9.icmpspec, 1057 pf->astack[pf->asd + 1] ? pf->alast->name : $2); 1058 free($2); 1059 pf->astack[pf->asd + 1] = NULL; 1060 } 1061 | NATANCHOR string interface af proto fromto rtable { 1062 struct pfctl_rule r; 1063 1064 if (check_rulestate(PFCTL_STATE_NAT)) { 1065 free($2); 1066 YYERROR; 1067 } 1068 1069 memset(&r, 0, sizeof(r)); 1070 r.action = PF_NAT; 1071 r.af = $4; 1072 r.rtableid = $7; 1073 1074 decide_address_family($6.src.host, &r.af); 1075 decide_address_family($6.dst.host, &r.af); 1076 1077 expand_rule(&r, $3, NULL, $5, $6.src_os, 1078 $6.src.host, $6.src.port, $6.dst.host, $6.dst.port, 1079 0, 0, 0, $2); 1080 free($2); 1081 } 1082 | RDRANCHOR string interface af proto fromto rtable { 1083 struct pfctl_rule r; 1084 1085 if (check_rulestate(PFCTL_STATE_NAT)) { 1086 free($2); 1087 YYERROR; 1088 } 1089 1090 memset(&r, 0, sizeof(r)); 1091 r.action = PF_RDR; 1092 r.af = $4; 1093 r.rtableid = $7; 1094 1095 decide_address_family($6.src.host, &r.af); 1096 decide_address_family($6.dst.host, &r.af); 1097 1098 if ($6.src.port != NULL) { 1099 yyerror("source port parameter not supported" 1100 " in rdr-anchor"); 1101 YYERROR; 1102 } 1103 if ($6.dst.port != NULL) { 1104 if ($6.dst.port->next != NULL) { 1105 yyerror("destination port list " 1106 "expansion not supported in " 1107 "rdr-anchor"); 1108 YYERROR; 1109 } else if ($6.dst.port->op != PF_OP_EQ) { 1110 yyerror("destination port operators" 1111 " not supported in rdr-anchor"); 1112 YYERROR; 1113 } 1114 r.dst.port[0] = $6.dst.port->port[0]; 1115 r.dst.port[1] = $6.dst.port->port[1]; 1116 r.dst.port_op = $6.dst.port->op; 1117 } 1118 1119 expand_rule(&r, $3, NULL, $5, $6.src_os, 1120 $6.src.host, $6.src.port, $6.dst.host, $6.dst.port, 1121 0, 0, 0, $2); 1122 free($2); 1123 } 1124 | BINATANCHOR string interface af proto fromto rtable { 1125 struct pfctl_rule r; 1126 1127 if (check_rulestate(PFCTL_STATE_NAT)) { 1128 free($2); 1129 YYERROR; 1130 } 1131 1132 memset(&r, 0, sizeof(r)); 1133 r.action = PF_BINAT; 1134 r.af = $4; 1135 r.rtableid = $7; 1136 if ($5 != NULL) { 1137 if ($5->next != NULL) { 1138 yyerror("proto list expansion" 1139 " not supported in binat-anchor"); 1140 YYERROR; 1141 } 1142 r.proto = $5->proto; 1143 free($5); 1144 } 1145 1146 if ($6.src.host != NULL || $6.src.port != NULL || 1147 $6.dst.host != NULL || $6.dst.port != NULL) { 1148 yyerror("fromto parameter not supported" 1149 " in binat-anchor"); 1150 YYERROR; 1151 } 1152 1153 decide_address_family($6.src.host, &r.af); 1154 decide_address_family($6.dst.host, &r.af); 1155 1156 pfctl_append_rule(pf, &r, $2); 1157 free($2); 1158 } 1159 ; 1160 1161 loadrule : LOAD ANCHOR string FROM string { 1162 struct loadanchors *loadanchor; 1163 1164 if (strlen(pf->anchor->name) + 1 + 1165 strlen($3) >= MAXPATHLEN) { 1166 yyerror("anchorname %s too long, max %u\n", 1167 $3, MAXPATHLEN - 1); 1168 free($3); 1169 YYERROR; 1170 } 1171 loadanchor = calloc(1, sizeof(struct loadanchors)); 1172 if (loadanchor == NULL) 1173 err(1, "loadrule: calloc"); 1174 if ((loadanchor->anchorname = malloc(MAXPATHLEN)) == 1175 NULL) 1176 err(1, "loadrule: malloc"); 1177 if (pf->anchor->name[0]) 1178 snprintf(loadanchor->anchorname, MAXPATHLEN, 1179 "%s/%s", pf->anchor->name, $3); 1180 else 1181 strlcpy(loadanchor->anchorname, $3, MAXPATHLEN); 1182 if ((loadanchor->filename = strdup($5)) == NULL) 1183 err(1, "loadrule: strdup"); 1184 1185 TAILQ_INSERT_TAIL(&loadanchorshead, loadanchor, 1186 entries); 1187 1188 free($3); 1189 free($5); 1190 }; 1191 1192 scrubaction : no SCRUB { 1193 $$.b2 = $$.w = 0; 1194 if ($1) 1195 $$.b1 = PF_NOSCRUB; 1196 else 1197 $$.b1 = PF_SCRUB; 1198 } 1199 ; 1200 1201 etherrule : ETHER action dir quick interface bridge etherproto etherfromto l3fromto etherfilter_opts 1202 { 1203 struct pfctl_eth_rule r; 1204 1205 bzero(&r, sizeof(r)); 1206 1207 if (check_rulestate(PFCTL_STATE_ETHER)) 1208 YYERROR; 1209 1210 r.action = $2.b1; 1211 r.direction = $3; 1212 r.quick = $4.quick; 1213 if ($10.tag != NULL) 1214 memcpy(&r.tagname, $10.tag, sizeof(r.tagname)); 1215 if ($10.match_tag) 1216 if (strlcpy(r.match_tagname, $10.match_tag, 1217 PF_TAG_NAME_SIZE) >= PF_TAG_NAME_SIZE) { 1218 yyerror("tag too long, max %u chars", 1219 PF_TAG_NAME_SIZE - 1); 1220 YYERROR; 1221 } 1222 r.match_tag_not = $10.match_tag_not; 1223 if ($10.queues.qname != NULL) 1224 memcpy(&r.qname, $10.queues.qname, sizeof(r.qname)); 1225 r.dnpipe = $10.dnpipe; 1226 r.dnflags = $10.free_flags; 1227 1228 expand_eth_rule(&r, $5, $7, $8.src, $8.dst, 1229 $9.src.host, $9.dst.host, $6, ""); 1230 } 1231 ; 1232 1233 etherpfa_anchorlist : /* empty */ 1234 | etherpfa_anchorlist '\n' 1235 | etherpfa_anchorlist etherrule '\n' 1236 | etherpfa_anchorlist etheranchorrule '\n' 1237 ; 1238 1239 etherpfa_anchor : '{' 1240 { 1241 char ta[PF_ANCHOR_NAME_SIZE]; 1242 struct pfctl_eth_ruleset *rs; 1243 1244 /* steping into a brace anchor */ 1245 pf->asd++; 1246 pf->bn++; 1247 1248 /* create a holding ruleset in the root */ 1249 snprintf(ta, PF_ANCHOR_NAME_SIZE, "_%d", pf->bn); 1250 rs = pf_find_or_create_eth_ruleset(ta); 1251 if (rs == NULL) 1252 err(1, "etherpfa_anchor: pf_find_or_create_eth_ruleset"); 1253 pf->eastack[pf->asd] = rs->anchor; 1254 pf->eanchor = rs->anchor; 1255 } '\n' etherpfa_anchorlist '}' 1256 { 1257 pf->ealast = pf->eanchor; 1258 pf->asd--; 1259 pf->eanchor = pf->eastack[pf->asd]; 1260 } 1261 | /* empty */ 1262 ; 1263 1264 etheranchorrule : ETHER ANCHOR anchorname dir quick interface etherproto etherfromto l3fromto etherpfa_anchor 1265 { 1266 struct pfctl_eth_rule r; 1267 1268 if (check_rulestate(PFCTL_STATE_ETHER)) { 1269 free($3); 1270 YYERROR; 1271 } 1272 1273 if ($3 && ($3[0] == '_' || strstr($3, "/_") != NULL)) { 1274 free($3); 1275 yyerror("anchor names beginning with '_' " 1276 "are reserved for internal use"); 1277 YYERROR; 1278 } 1279 1280 memset(&r, 0, sizeof(r)); 1281 if (pf->eastack[pf->asd + 1]) { 1282 if ($3 && strchr($3, '/') != NULL) { 1283 free($3); 1284 yyerror("anchor paths containing '/' " 1285 "cannot be used for inline anchors."); 1286 YYERROR; 1287 } 1288 1289 /* Move inline rules into relative location. */ 1290 pfctl_eth_anchor_setup(pf, &r, 1291 &pf->eastack[pf->asd]->ruleset, 1292 $3 ? $3 : pf->ealast->name); 1293 if (r.anchor == NULL) 1294 err(1, "etheranchorrule: unable to " 1295 "create ruleset"); 1296 1297 if (pf->ealast != r.anchor) { 1298 if (r.anchor->match) { 1299 yyerror("inline anchor '%s' " 1300 "already exists", 1301 r.anchor->name); 1302 YYERROR; 1303 } 1304 mv_eth_rules(&pf->ealast->ruleset, 1305 &r.anchor->ruleset); 1306 } 1307 pf_remove_if_empty_eth_ruleset(&pf->ealast->ruleset); 1308 pf->ealast = r.anchor; 1309 } else { 1310 if (!$3) { 1311 yyerror("anchors without explicit " 1312 "rules must specify a name"); 1313 YYERROR; 1314 } 1315 } 1316 1317 r.direction = $4; 1318 r.quick = $5.quick; 1319 1320 expand_eth_rule(&r, $6, $7, $8.src, $8.dst, 1321 $9.src.host, $9.dst.host, NULL, 1322 pf->eastack[pf->asd + 1] ? pf->ealast->name : $3); 1323 1324 free($3); 1325 pf->eastack[pf->asd + 1] = NULL; 1326 } 1327 ; 1328 1329 etherfilter_opts : { 1330 bzero(&filter_opts, sizeof filter_opts); 1331 } 1332 etherfilter_opts_l 1333 { $$ = filter_opts; } 1334 | /* empty */ { 1335 bzero(&filter_opts, sizeof filter_opts); 1336 $$ = filter_opts; 1337 } 1338 ; 1339 1340 etherfilter_opts_l : etherfilter_opts_l etherfilter_opt 1341 | etherfilter_opt 1342 1343 etherfilter_opt : etherqname { 1344 if (filter_opts.queues.qname) { 1345 yyerror("queue cannot be redefined"); 1346 YYERROR; 1347 } 1348 filter_opts.queues = $1; 1349 } 1350 | TAG string { 1351 filter_opts.tag = $2; 1352 } 1353 | not TAGGED string { 1354 filter_opts.match_tag = $3; 1355 filter_opts.match_tag_not = $1; 1356 } 1357 | DNPIPE number { 1358 filter_opts.dnpipe = $2; 1359 filter_opts.free_flags |= PFRULE_DN_IS_PIPE; 1360 } 1361 | DNQUEUE number { 1362 filter_opts.dnpipe = $2; 1363 filter_opts.free_flags |= PFRULE_DN_IS_QUEUE; 1364 } 1365 ; 1366 1367 bridge : /* empty */ { 1368 $$ = NULL; 1369 } 1370 | BRIDGE_TO STRING { 1371 $$ = strdup($2); 1372 } 1373 ; 1374 1375 scrubrule : scrubaction dir logquick interface af proto fromto scrub_opts 1376 { 1377 struct pfctl_rule r; 1378 1379 if (check_rulestate(PFCTL_STATE_SCRUB)) 1380 YYERROR; 1381 1382 memset(&r, 0, sizeof(r)); 1383 1384 r.action = $1.b1; 1385 r.direction = $2; 1386 1387 r.log = $3.log; 1388 r.logif = $3.logif; 1389 if ($3.quick) { 1390 yyerror("scrub rules do not support 'quick'"); 1391 YYERROR; 1392 } 1393 1394 r.af = $5; 1395 if ($8.nodf) 1396 r.rule_flag |= PFRULE_NODF; 1397 if ($8.randomid) 1398 r.rule_flag |= PFRULE_RANDOMID; 1399 if ($8.reassemble_tcp) { 1400 if (r.direction != PF_INOUT) { 1401 yyerror("reassemble tcp rules can not " 1402 "specify direction"); 1403 YYERROR; 1404 } 1405 r.rule_flag |= PFRULE_REASSEMBLE_TCP; 1406 } 1407 if ($8.minttl) 1408 r.min_ttl = $8.minttl; 1409 if ($8.maxmss) 1410 r.max_mss = $8.maxmss; 1411 if ($8.marker & SOM_SETTOS) { 1412 r.rule_flag |= PFRULE_SET_TOS; 1413 r.set_tos = $8.settos; 1414 } 1415 if ($8.fragcache) 1416 r.rule_flag |= $8.fragcache; 1417 if ($8.match_tag) 1418 if (strlcpy(r.match_tagname, $8.match_tag, 1419 PF_TAG_NAME_SIZE) >= PF_TAG_NAME_SIZE) { 1420 yyerror("tag too long, max %u chars", 1421 PF_TAG_NAME_SIZE - 1); 1422 YYERROR; 1423 } 1424 r.match_tag_not = $8.match_tag_not; 1425 r.rtableid = $8.rtableid; 1426 1427 expand_rule(&r, $4, NULL, $6, $7.src_os, 1428 $7.src.host, $7.src.port, $7.dst.host, $7.dst.port, 1429 NULL, NULL, NULL, ""); 1430 } 1431 ; 1432 1433 scrub_opts : { 1434 bzero(&scrub_opts, sizeof scrub_opts); 1435 scrub_opts.rtableid = -1; 1436 } 1437 scrub_opts_l 1438 { $$ = scrub_opts; } 1439 | /* empty */ { 1440 bzero(&scrub_opts, sizeof scrub_opts); 1441 scrub_opts.rtableid = -1; 1442 $$ = scrub_opts; 1443 } 1444 ; 1445 1446 scrub_opts_l : scrub_opts_l scrub_opt 1447 | scrub_opt 1448 ; 1449 1450 scrub_opt : NODF { 1451 if (scrub_opts.nodf) { 1452 yyerror("no-df cannot be respecified"); 1453 YYERROR; 1454 } 1455 scrub_opts.nodf = 1; 1456 } 1457 | MINTTL NUMBER { 1458 if (scrub_opts.marker & SOM_MINTTL) { 1459 yyerror("min-ttl cannot be respecified"); 1460 YYERROR; 1461 } 1462 if ($2 < 0 || $2 > 255) { 1463 yyerror("illegal min-ttl value %d", $2); 1464 YYERROR; 1465 } 1466 scrub_opts.marker |= SOM_MINTTL; 1467 scrub_opts.minttl = $2; 1468 } 1469 | MAXMSS NUMBER { 1470 if (scrub_opts.marker & SOM_MAXMSS) { 1471 yyerror("max-mss cannot be respecified"); 1472 YYERROR; 1473 } 1474 if ($2 < 0 || $2 > 65535) { 1475 yyerror("illegal max-mss value %d", $2); 1476 YYERROR; 1477 } 1478 scrub_opts.marker |= SOM_MAXMSS; 1479 scrub_opts.maxmss = $2; 1480 } 1481 | SETTOS tos { 1482 if (scrub_opts.marker & SOM_SETTOS) { 1483 yyerror("set-tos cannot be respecified"); 1484 YYERROR; 1485 } 1486 scrub_opts.marker |= SOM_SETTOS; 1487 scrub_opts.settos = $2; 1488 } 1489 | fragcache { 1490 if (scrub_opts.marker & SOM_FRAGCACHE) { 1491 yyerror("fragcache cannot be respecified"); 1492 YYERROR; 1493 } 1494 scrub_opts.marker |= SOM_FRAGCACHE; 1495 scrub_opts.fragcache = $1; 1496 } 1497 | REASSEMBLE STRING { 1498 if (strcasecmp($2, "tcp") != 0) { 1499 yyerror("scrub reassemble supports only tcp, " 1500 "not '%s'", $2); 1501 free($2); 1502 YYERROR; 1503 } 1504 free($2); 1505 if (scrub_opts.reassemble_tcp) { 1506 yyerror("reassemble tcp cannot be respecified"); 1507 YYERROR; 1508 } 1509 scrub_opts.reassemble_tcp = 1; 1510 } 1511 | RANDOMID { 1512 if (scrub_opts.randomid) { 1513 yyerror("random-id cannot be respecified"); 1514 YYERROR; 1515 } 1516 scrub_opts.randomid = 1; 1517 } 1518 | RTABLE NUMBER { 1519 if ($2 < 0 || $2 > rt_tableid_max()) { 1520 yyerror("invalid rtable id"); 1521 YYERROR; 1522 } 1523 scrub_opts.rtableid = $2; 1524 } 1525 | not TAGGED string { 1526 scrub_opts.match_tag = $3; 1527 scrub_opts.match_tag_not = $1; 1528 } 1529 ; 1530 1531 fragcache : FRAGMENT REASSEMBLE { $$ = 0; /* default */ } 1532 | FRAGMENT FRAGCROP { $$ = 0; } 1533 | FRAGMENT FRAGDROP { $$ = 0; } 1534 ; 1535 1536 antispoof : ANTISPOOF logquick antispoof_ifspc af antispoof_opts { 1537 struct pfctl_rule r; 1538 struct node_host *h = NULL, *hh; 1539 struct node_if *i, *j; 1540 1541 if (check_rulestate(PFCTL_STATE_FILTER)) 1542 YYERROR; 1543 1544 for (i = $3; i; i = i->next) { 1545 bzero(&r, sizeof(r)); 1546 1547 r.action = PF_DROP; 1548 r.direction = PF_IN; 1549 r.log = $2.log; 1550 r.logif = $2.logif; 1551 r.quick = $2.quick; 1552 r.af = $4; 1553 r.ridentifier = $5.ridentifier; 1554 if (rule_label(&r, $5.label)) 1555 YYERROR; 1556 r.rtableid = $5.rtableid; 1557 j = calloc(1, sizeof(struct node_if)); 1558 if (j == NULL) 1559 err(1, "antispoof: calloc"); 1560 if (strlcpy(j->ifname, i->ifname, 1561 sizeof(j->ifname)) >= sizeof(j->ifname)) { 1562 free(j); 1563 yyerror("interface name too long"); 1564 YYERROR; 1565 } 1566 j->not = 1; 1567 if (i->dynamic) { 1568 h = calloc(1, sizeof(*h)); 1569 if (h == NULL) 1570 err(1, "address: calloc"); 1571 h->addr.type = PF_ADDR_DYNIFTL; 1572 set_ipmask(h, 128); 1573 if (strlcpy(h->addr.v.ifname, i->ifname, 1574 sizeof(h->addr.v.ifname)) >= 1575 sizeof(h->addr.v.ifname)) { 1576 free(h); 1577 yyerror( 1578 "interface name too long"); 1579 YYERROR; 1580 } 1581 hh = malloc(sizeof(*hh)); 1582 if (hh == NULL) 1583 err(1, "address: malloc"); 1584 bcopy(h, hh, sizeof(*hh)); 1585 h->addr.iflags = PFI_AFLAG_NETWORK; 1586 } else { 1587 h = ifa_lookup(j->ifname, 1588 PFI_AFLAG_NETWORK); 1589 hh = NULL; 1590 } 1591 1592 if (h != NULL) 1593 expand_rule(&r, j, NULL, NULL, NULL, h, 1594 NULL, NULL, NULL, NULL, NULL, 1595 NULL, ""); 1596 1597 if ((i->ifa_flags & IFF_LOOPBACK) == 0) { 1598 bzero(&r, sizeof(r)); 1599 1600 r.action = PF_DROP; 1601 r.direction = PF_IN; 1602 r.log = $2.log; 1603 r.logif = $2.logif; 1604 r.quick = $2.quick; 1605 r.af = $4; 1606 r.ridentifier = $5.ridentifier; 1607 if (rule_label(&r, $5.label)) 1608 YYERROR; 1609 r.rtableid = $5.rtableid; 1610 if (hh != NULL) 1611 h = hh; 1612 else 1613 h = ifa_lookup(i->ifname, 0); 1614 if (h != NULL) 1615 expand_rule(&r, NULL, NULL, 1616 NULL, NULL, h, NULL, NULL, 1617 NULL, NULL, NULL, NULL, ""); 1618 } else 1619 free(hh); 1620 } 1621 for (int i = 0; i < PF_RULE_MAX_LABEL_COUNT; i++) 1622 free($5.label[i]); 1623 } 1624 ; 1625 1626 antispoof_ifspc : FOR antispoof_if { $$ = $2; } 1627 | FOR '{' optnl antispoof_iflst '}' { $$ = $4; } 1628 ; 1629 1630 antispoof_iflst : antispoof_if optnl { $$ = $1; } 1631 | antispoof_iflst comma antispoof_if optnl { 1632 $1->tail->next = $3; 1633 $1->tail = $3; 1634 $$ = $1; 1635 } 1636 ; 1637 1638 antispoof_if : if_item { $$ = $1; } 1639 | '(' if_item ')' { 1640 $2->dynamic = 1; 1641 $$ = $2; 1642 } 1643 ; 1644 1645 antispoof_opts : { 1646 bzero(&antispoof_opts, sizeof antispoof_opts); 1647 antispoof_opts.rtableid = -1; 1648 } 1649 antispoof_opts_l 1650 { $$ = antispoof_opts; } 1651 | /* empty */ { 1652 bzero(&antispoof_opts, sizeof antispoof_opts); 1653 antispoof_opts.rtableid = -1; 1654 $$ = antispoof_opts; 1655 } 1656 ; 1657 1658 antispoof_opts_l : antispoof_opts_l antispoof_opt 1659 | antispoof_opt 1660 ; 1661 1662 antispoof_opt : label { 1663 if (antispoof_opts.labelcount >= PF_RULE_MAX_LABEL_COUNT) { 1664 yyerror("label can only be used %d times", PF_RULE_MAX_LABEL_COUNT); 1665 YYERROR; 1666 } 1667 antispoof_opts.label[antispoof_opts.labelcount++] = $1; 1668 } 1669 | RIDENTIFIER number { 1670 antispoof_opts.ridentifier = $2; 1671 } 1672 | RTABLE NUMBER { 1673 if ($2 < 0 || $2 > rt_tableid_max()) { 1674 yyerror("invalid rtable id"); 1675 YYERROR; 1676 } 1677 antispoof_opts.rtableid = $2; 1678 } 1679 ; 1680 1681 not : '!' { $$ = 1; } 1682 | /* empty */ { $$ = 0; } 1683 ; 1684 1685 tabledef : TABLE '<' STRING '>' table_opts { 1686 struct node_host *h, *nh; 1687 struct node_tinit *ti, *nti; 1688 1689 if (strlen($3) >= PF_TABLE_NAME_SIZE) { 1690 yyerror("table name too long, max %d chars", 1691 PF_TABLE_NAME_SIZE - 1); 1692 free($3); 1693 YYERROR; 1694 } 1695 if (pf->loadopt & PFCTL_FLAG_TABLE) 1696 if (process_tabledef($3, &$5)) { 1697 free($3); 1698 YYERROR; 1699 } 1700 free($3); 1701 for (ti = SIMPLEQ_FIRST(&$5.init_nodes); 1702 ti != SIMPLEQ_END(&$5.init_nodes); ti = nti) { 1703 if (ti->file) 1704 free(ti->file); 1705 for (h = ti->host; h != NULL; h = nh) { 1706 nh = h->next; 1707 free(h); 1708 } 1709 nti = SIMPLEQ_NEXT(ti, entries); 1710 free(ti); 1711 } 1712 } 1713 ; 1714 1715 table_opts : { 1716 bzero(&table_opts, sizeof table_opts); 1717 SIMPLEQ_INIT(&table_opts.init_nodes); 1718 } 1719 table_opts_l 1720 { $$ = table_opts; } 1721 | /* empty */ 1722 { 1723 bzero(&table_opts, sizeof table_opts); 1724 SIMPLEQ_INIT(&table_opts.init_nodes); 1725 $$ = table_opts; 1726 } 1727 ; 1728 1729 table_opts_l : table_opts_l table_opt 1730 | table_opt 1731 ; 1732 1733 table_opt : STRING { 1734 if (!strcmp($1, "const")) 1735 table_opts.flags |= PFR_TFLAG_CONST; 1736 else if (!strcmp($1, "persist")) 1737 table_opts.flags |= PFR_TFLAG_PERSIST; 1738 else if (!strcmp($1, "counters")) 1739 table_opts.flags |= PFR_TFLAG_COUNTERS; 1740 else { 1741 yyerror("invalid table option '%s'", $1); 1742 free($1); 1743 YYERROR; 1744 } 1745 free($1); 1746 } 1747 | '{' optnl '}' { table_opts.init_addr = 1; } 1748 | '{' optnl host_list '}' { 1749 struct node_host *n; 1750 struct node_tinit *ti; 1751 1752 for (n = $3; n != NULL; n = n->next) { 1753 switch (n->addr.type) { 1754 case PF_ADDR_ADDRMASK: 1755 continue; /* ok */ 1756 case PF_ADDR_RANGE: 1757 yyerror("address ranges are not " 1758 "permitted inside tables"); 1759 break; 1760 case PF_ADDR_DYNIFTL: 1761 yyerror("dynamic addresses are not " 1762 "permitted inside tables"); 1763 break; 1764 case PF_ADDR_TABLE: 1765 yyerror("tables cannot contain tables"); 1766 break; 1767 case PF_ADDR_NOROUTE: 1768 yyerror("\"no-route\" is not permitted " 1769 "inside tables"); 1770 break; 1771 case PF_ADDR_URPFFAILED: 1772 yyerror("\"urpf-failed\" is not " 1773 "permitted inside tables"); 1774 break; 1775 default: 1776 yyerror("unknown address type %d", 1777 n->addr.type); 1778 } 1779 YYERROR; 1780 } 1781 if (!(ti = calloc(1, sizeof(*ti)))) 1782 err(1, "table_opt: calloc"); 1783 ti->host = $3; 1784 SIMPLEQ_INSERT_TAIL(&table_opts.init_nodes, ti, 1785 entries); 1786 table_opts.init_addr = 1; 1787 } 1788 | FILENAME STRING { 1789 struct node_tinit *ti; 1790 1791 if (!(ti = calloc(1, sizeof(*ti)))) 1792 err(1, "table_opt: calloc"); 1793 ti->file = $2; 1794 SIMPLEQ_INSERT_TAIL(&table_opts.init_nodes, ti, 1795 entries); 1796 table_opts.init_addr = 1; 1797 } 1798 ; 1799 1800 altqif : ALTQ interface queue_opts QUEUE qassign { 1801 struct pf_altq a; 1802 1803 if (check_rulestate(PFCTL_STATE_QUEUE)) 1804 YYERROR; 1805 1806 memset(&a, 0, sizeof(a)); 1807 if ($3.scheduler.qtype == ALTQT_NONE) { 1808 yyerror("no scheduler specified!"); 1809 YYERROR; 1810 } 1811 a.scheduler = $3.scheduler.qtype; 1812 a.qlimit = $3.qlimit; 1813 a.tbrsize = $3.tbrsize; 1814 if ($5 == NULL && $3.scheduler.qtype != ALTQT_CODEL) { 1815 yyerror("no child queues specified"); 1816 YYERROR; 1817 } 1818 if (expand_altq(&a, $2, $5, $3.queue_bwspec, 1819 &$3.scheduler)) 1820 YYERROR; 1821 } 1822 ; 1823 1824 queuespec : QUEUE STRING interface queue_opts qassign { 1825 struct pf_altq a; 1826 1827 if (check_rulestate(PFCTL_STATE_QUEUE)) { 1828 free($2); 1829 YYERROR; 1830 } 1831 1832 memset(&a, 0, sizeof(a)); 1833 1834 if (strlcpy(a.qname, $2, sizeof(a.qname)) >= 1835 sizeof(a.qname)) { 1836 yyerror("queue name too long (max " 1837 "%d chars)", PF_QNAME_SIZE-1); 1838 free($2); 1839 YYERROR; 1840 } 1841 free($2); 1842 if ($4.tbrsize) { 1843 yyerror("cannot specify tbrsize for queue"); 1844 YYERROR; 1845 } 1846 if ($4.priority > 255) { 1847 yyerror("priority out of range: max 255"); 1848 YYERROR; 1849 } 1850 a.priority = $4.priority; 1851 a.qlimit = $4.qlimit; 1852 a.scheduler = $4.scheduler.qtype; 1853 if (expand_queue(&a, $3, $5, $4.queue_bwspec, 1854 &$4.scheduler)) { 1855 yyerror("errors in queue definition"); 1856 YYERROR; 1857 } 1858 } 1859 ; 1860 1861 queue_opts : { 1862 bzero(&queue_opts, sizeof queue_opts); 1863 queue_opts.priority = DEFAULT_PRIORITY; 1864 queue_opts.qlimit = DEFAULT_QLIMIT; 1865 queue_opts.scheduler.qtype = ALTQT_NONE; 1866 queue_opts.queue_bwspec.bw_percent = 100; 1867 } 1868 queue_opts_l 1869 { $$ = queue_opts; } 1870 | /* empty */ { 1871 bzero(&queue_opts, sizeof queue_opts); 1872 queue_opts.priority = DEFAULT_PRIORITY; 1873 queue_opts.qlimit = DEFAULT_QLIMIT; 1874 queue_opts.scheduler.qtype = ALTQT_NONE; 1875 queue_opts.queue_bwspec.bw_percent = 100; 1876 $$ = queue_opts; 1877 } 1878 ; 1879 1880 queue_opts_l : queue_opts_l queue_opt 1881 | queue_opt 1882 ; 1883 1884 queue_opt : BANDWIDTH bandwidth { 1885 if (queue_opts.marker & QOM_BWSPEC) { 1886 yyerror("bandwidth cannot be respecified"); 1887 YYERROR; 1888 } 1889 queue_opts.marker |= QOM_BWSPEC; 1890 queue_opts.queue_bwspec = $2; 1891 } 1892 | PRIORITY NUMBER { 1893 if (queue_opts.marker & QOM_PRIORITY) { 1894 yyerror("priority cannot be respecified"); 1895 YYERROR; 1896 } 1897 if ($2 < 0 || $2 > 255) { 1898 yyerror("priority out of range: max 255"); 1899 YYERROR; 1900 } 1901 queue_opts.marker |= QOM_PRIORITY; 1902 queue_opts.priority = $2; 1903 } 1904 | QLIMIT NUMBER { 1905 if (queue_opts.marker & QOM_QLIMIT) { 1906 yyerror("qlimit cannot be respecified"); 1907 YYERROR; 1908 } 1909 if ($2 < 0 || $2 > 65535) { 1910 yyerror("qlimit out of range: max 65535"); 1911 YYERROR; 1912 } 1913 queue_opts.marker |= QOM_QLIMIT; 1914 queue_opts.qlimit = $2; 1915 } 1916 | scheduler { 1917 if (queue_opts.marker & QOM_SCHEDULER) { 1918 yyerror("scheduler cannot be respecified"); 1919 YYERROR; 1920 } 1921 queue_opts.marker |= QOM_SCHEDULER; 1922 queue_opts.scheduler = $1; 1923 } 1924 | TBRSIZE NUMBER { 1925 if (queue_opts.marker & QOM_TBRSIZE) { 1926 yyerror("tbrsize cannot be respecified"); 1927 YYERROR; 1928 } 1929 if ($2 < 0 || $2 > UINT_MAX) { 1930 yyerror("tbrsize too big: max %u", UINT_MAX); 1931 YYERROR; 1932 } 1933 queue_opts.marker |= QOM_TBRSIZE; 1934 queue_opts.tbrsize = $2; 1935 } 1936 ; 1937 1938 bandwidth : STRING { 1939 double bps; 1940 char *cp; 1941 1942 $$.bw_percent = 0; 1943 1944 bps = strtod($1, &cp); 1945 if (cp != NULL) { 1946 if (strlen(cp) > 1) { 1947 char *cu = cp + 1; 1948 if (!strcmp(cu, "Bit") || 1949 !strcmp(cu, "B") || 1950 !strcmp(cu, "bit") || 1951 !strcmp(cu, "b")) { 1952 *cu = 0; 1953 } 1954 } 1955 if (!strcmp(cp, "b")) 1956 ; /* nothing */ 1957 else if (!strcmp(cp, "K")) 1958 bps *= 1000; 1959 else if (!strcmp(cp, "M")) 1960 bps *= 1000 * 1000; 1961 else if (!strcmp(cp, "G")) 1962 bps *= 1000 * 1000 * 1000; 1963 else if (!strcmp(cp, "%")) { 1964 if (bps < 0 || bps > 100) { 1965 yyerror("bandwidth spec " 1966 "out of range"); 1967 free($1); 1968 YYERROR; 1969 } 1970 $$.bw_percent = bps; 1971 bps = 0; 1972 } else { 1973 yyerror("unknown unit %s", cp); 1974 free($1); 1975 YYERROR; 1976 } 1977 } 1978 free($1); 1979 $$.bw_absolute = (u_int64_t)bps; 1980 } 1981 | NUMBER { 1982 if ($1 < 0 || $1 >= LLONG_MAX) { 1983 yyerror("bandwidth number too big"); 1984 YYERROR; 1985 } 1986 $$.bw_percent = 0; 1987 $$.bw_absolute = $1; 1988 } 1989 ; 1990 1991 scheduler : CBQ { 1992 $$.qtype = ALTQT_CBQ; 1993 $$.data.cbq_opts.flags = 0; 1994 } 1995 | CBQ '(' cbqflags_list ')' { 1996 $$.qtype = ALTQT_CBQ; 1997 $$.data.cbq_opts.flags = $3; 1998 } 1999 | PRIQ { 2000 $$.qtype = ALTQT_PRIQ; 2001 $$.data.priq_opts.flags = 0; 2002 } 2003 | PRIQ '(' priqflags_list ')' { 2004 $$.qtype = ALTQT_PRIQ; 2005 $$.data.priq_opts.flags = $3; 2006 } 2007 | HFSC { 2008 $$.qtype = ALTQT_HFSC; 2009 bzero(&$$.data.hfsc_opts, 2010 sizeof(struct node_hfsc_opts)); 2011 } 2012 | HFSC '(' hfsc_opts ')' { 2013 $$.qtype = ALTQT_HFSC; 2014 $$.data.hfsc_opts = $3; 2015 } 2016 | FAIRQ { 2017 $$.qtype = ALTQT_FAIRQ; 2018 bzero(&$$.data.fairq_opts, 2019 sizeof(struct node_fairq_opts)); 2020 } 2021 | FAIRQ '(' fairq_opts ')' { 2022 $$.qtype = ALTQT_FAIRQ; 2023 $$.data.fairq_opts = $3; 2024 } 2025 | CODEL { 2026 $$.qtype = ALTQT_CODEL; 2027 bzero(&$$.data.codel_opts, 2028 sizeof(struct codel_opts)); 2029 } 2030 | CODEL '(' codel_opts ')' { 2031 $$.qtype = ALTQT_CODEL; 2032 $$.data.codel_opts = $3; 2033 } 2034 ; 2035 2036 cbqflags_list : cbqflags_item { $$ |= $1; } 2037 | cbqflags_list comma cbqflags_item { $$ |= $3; } 2038 ; 2039 2040 cbqflags_item : STRING { 2041 if (!strcmp($1, "default")) 2042 $$ = CBQCLF_DEFCLASS; 2043 else if (!strcmp($1, "borrow")) 2044 $$ = CBQCLF_BORROW; 2045 else if (!strcmp($1, "red")) 2046 $$ = CBQCLF_RED; 2047 else if (!strcmp($1, "ecn")) 2048 $$ = CBQCLF_RED|CBQCLF_ECN; 2049 else if (!strcmp($1, "rio")) 2050 $$ = CBQCLF_RIO; 2051 else if (!strcmp($1, "codel")) 2052 $$ = CBQCLF_CODEL; 2053 else { 2054 yyerror("unknown cbq flag \"%s\"", $1); 2055 free($1); 2056 YYERROR; 2057 } 2058 free($1); 2059 } 2060 ; 2061 2062 priqflags_list : priqflags_item { $$ |= $1; } 2063 | priqflags_list comma priqflags_item { $$ |= $3; } 2064 ; 2065 2066 priqflags_item : STRING { 2067 if (!strcmp($1, "default")) 2068 $$ = PRCF_DEFAULTCLASS; 2069 else if (!strcmp($1, "red")) 2070 $$ = PRCF_RED; 2071 else if (!strcmp($1, "ecn")) 2072 $$ = PRCF_RED|PRCF_ECN; 2073 else if (!strcmp($1, "rio")) 2074 $$ = PRCF_RIO; 2075 else if (!strcmp($1, "codel")) 2076 $$ = PRCF_CODEL; 2077 else { 2078 yyerror("unknown priq flag \"%s\"", $1); 2079 free($1); 2080 YYERROR; 2081 } 2082 free($1); 2083 } 2084 ; 2085 2086 hfsc_opts : { 2087 bzero(&hfsc_opts, 2088 sizeof(struct node_hfsc_opts)); 2089 } 2090 hfscopts_list { 2091 $$ = hfsc_opts; 2092 } 2093 ; 2094 2095 hfscopts_list : hfscopts_item 2096 | hfscopts_list comma hfscopts_item 2097 ; 2098 2099 hfscopts_item : LINKSHARE bandwidth { 2100 if (hfsc_opts.linkshare.used) { 2101 yyerror("linkshare already specified"); 2102 YYERROR; 2103 } 2104 hfsc_opts.linkshare.m2 = $2; 2105 hfsc_opts.linkshare.used = 1; 2106 } 2107 | LINKSHARE '(' bandwidth comma NUMBER comma bandwidth ')' 2108 { 2109 if ($5 < 0 || $5 > INT_MAX) { 2110 yyerror("timing in curve out of range"); 2111 YYERROR; 2112 } 2113 if (hfsc_opts.linkshare.used) { 2114 yyerror("linkshare already specified"); 2115 YYERROR; 2116 } 2117 hfsc_opts.linkshare.m1 = $3; 2118 hfsc_opts.linkshare.d = $5; 2119 hfsc_opts.linkshare.m2 = $7; 2120 hfsc_opts.linkshare.used = 1; 2121 } 2122 | REALTIME bandwidth { 2123 if (hfsc_opts.realtime.used) { 2124 yyerror("realtime already specified"); 2125 YYERROR; 2126 } 2127 hfsc_opts.realtime.m2 = $2; 2128 hfsc_opts.realtime.used = 1; 2129 } 2130 | REALTIME '(' bandwidth comma NUMBER comma bandwidth ')' 2131 { 2132 if ($5 < 0 || $5 > INT_MAX) { 2133 yyerror("timing in curve out of range"); 2134 YYERROR; 2135 } 2136 if (hfsc_opts.realtime.used) { 2137 yyerror("realtime already specified"); 2138 YYERROR; 2139 } 2140 hfsc_opts.realtime.m1 = $3; 2141 hfsc_opts.realtime.d = $5; 2142 hfsc_opts.realtime.m2 = $7; 2143 hfsc_opts.realtime.used = 1; 2144 } 2145 | UPPERLIMIT bandwidth { 2146 if (hfsc_opts.upperlimit.used) { 2147 yyerror("upperlimit already specified"); 2148 YYERROR; 2149 } 2150 hfsc_opts.upperlimit.m2 = $2; 2151 hfsc_opts.upperlimit.used = 1; 2152 } 2153 | UPPERLIMIT '(' bandwidth comma NUMBER comma bandwidth ')' 2154 { 2155 if ($5 < 0 || $5 > INT_MAX) { 2156 yyerror("timing in curve out of range"); 2157 YYERROR; 2158 } 2159 if (hfsc_opts.upperlimit.used) { 2160 yyerror("upperlimit already specified"); 2161 YYERROR; 2162 } 2163 hfsc_opts.upperlimit.m1 = $3; 2164 hfsc_opts.upperlimit.d = $5; 2165 hfsc_opts.upperlimit.m2 = $7; 2166 hfsc_opts.upperlimit.used = 1; 2167 } 2168 | STRING { 2169 if (!strcmp($1, "default")) 2170 hfsc_opts.flags |= HFCF_DEFAULTCLASS; 2171 else if (!strcmp($1, "red")) 2172 hfsc_opts.flags |= HFCF_RED; 2173 else if (!strcmp($1, "ecn")) 2174 hfsc_opts.flags |= HFCF_RED|HFCF_ECN; 2175 else if (!strcmp($1, "rio")) 2176 hfsc_opts.flags |= HFCF_RIO; 2177 else if (!strcmp($1, "codel")) 2178 hfsc_opts.flags |= HFCF_CODEL; 2179 else { 2180 yyerror("unknown hfsc flag \"%s\"", $1); 2181 free($1); 2182 YYERROR; 2183 } 2184 free($1); 2185 } 2186 ; 2187 2188 fairq_opts : { 2189 bzero(&fairq_opts, 2190 sizeof(struct node_fairq_opts)); 2191 } 2192 fairqopts_list { 2193 $$ = fairq_opts; 2194 } 2195 ; 2196 2197 fairqopts_list : fairqopts_item 2198 | fairqopts_list comma fairqopts_item 2199 ; 2200 2201 fairqopts_item : LINKSHARE bandwidth { 2202 if (fairq_opts.linkshare.used) { 2203 yyerror("linkshare already specified"); 2204 YYERROR; 2205 } 2206 fairq_opts.linkshare.m2 = $2; 2207 fairq_opts.linkshare.used = 1; 2208 } 2209 | LINKSHARE '(' bandwidth number bandwidth ')' { 2210 if (fairq_opts.linkshare.used) { 2211 yyerror("linkshare already specified"); 2212 YYERROR; 2213 } 2214 fairq_opts.linkshare.m1 = $3; 2215 fairq_opts.linkshare.d = $4; 2216 fairq_opts.linkshare.m2 = $5; 2217 fairq_opts.linkshare.used = 1; 2218 } 2219 | HOGS bandwidth { 2220 fairq_opts.hogs_bw = $2; 2221 } 2222 | BUCKETS number { 2223 fairq_opts.nbuckets = $2; 2224 } 2225 | STRING { 2226 if (!strcmp($1, "default")) 2227 fairq_opts.flags |= FARF_DEFAULTCLASS; 2228 else if (!strcmp($1, "red")) 2229 fairq_opts.flags |= FARF_RED; 2230 else if (!strcmp($1, "ecn")) 2231 fairq_opts.flags |= FARF_RED|FARF_ECN; 2232 else if (!strcmp($1, "rio")) 2233 fairq_opts.flags |= FARF_RIO; 2234 else if (!strcmp($1, "codel")) 2235 fairq_opts.flags |= FARF_CODEL; 2236 else { 2237 yyerror("unknown fairq flag \"%s\"", $1); 2238 free($1); 2239 YYERROR; 2240 } 2241 free($1); 2242 } 2243 ; 2244 2245 codel_opts : { 2246 bzero(&codel_opts, 2247 sizeof(struct codel_opts)); 2248 } 2249 codelopts_list { 2250 $$ = codel_opts; 2251 } 2252 ; 2253 2254 codelopts_list : codelopts_item 2255 | codelopts_list comma codelopts_item 2256 ; 2257 2258 codelopts_item : INTERVAL number { 2259 if (codel_opts.interval) { 2260 yyerror("interval already specified"); 2261 YYERROR; 2262 } 2263 codel_opts.interval = $2; 2264 } 2265 | TARGET number { 2266 if (codel_opts.target) { 2267 yyerror("target already specified"); 2268 YYERROR; 2269 } 2270 codel_opts.target = $2; 2271 } 2272 | STRING { 2273 if (!strcmp($1, "ecn")) 2274 codel_opts.ecn = 1; 2275 else { 2276 yyerror("unknown codel option \"%s\"", $1); 2277 free($1); 2278 YYERROR; 2279 } 2280 free($1); 2281 } 2282 ; 2283 2284 qassign : /* empty */ { $$ = NULL; } 2285 | qassign_item { $$ = $1; } 2286 | '{' optnl qassign_list '}' { $$ = $3; } 2287 ; 2288 2289 qassign_list : qassign_item optnl { $$ = $1; } 2290 | qassign_list comma qassign_item optnl { 2291 $1->tail->next = $3; 2292 $1->tail = $3; 2293 $$ = $1; 2294 } 2295 ; 2296 2297 qassign_item : STRING { 2298 $$ = calloc(1, sizeof(struct node_queue)); 2299 if ($$ == NULL) 2300 err(1, "qassign_item: calloc"); 2301 if (strlcpy($$->queue, $1, sizeof($$->queue)) >= 2302 sizeof($$->queue)) { 2303 yyerror("queue name '%s' too long (max " 2304 "%d chars)", $1, sizeof($$->queue)-1); 2305 free($1); 2306 free($$); 2307 YYERROR; 2308 } 2309 free($1); 2310 $$->next = NULL; 2311 $$->tail = $$; 2312 } 2313 ; 2314 2315 pfrule : action dir logquick interface route af proto fromto 2316 filter_opts 2317 { 2318 struct pfctl_rule r; 2319 struct node_state_opt *o; 2320 struct node_proto *proto; 2321 int srctrack = 0; 2322 int statelock = 0; 2323 int adaptive = 0; 2324 int defaults = 0; 2325 2326 if (check_rulestate(PFCTL_STATE_FILTER)) 2327 YYERROR; 2328 2329 memset(&r, 0, sizeof(r)); 2330 2331 r.action = $1.b1; 2332 switch ($1.b2) { 2333 case PFRULE_RETURNRST: 2334 r.rule_flag |= PFRULE_RETURNRST; 2335 r.return_ttl = $1.w; 2336 break; 2337 case PFRULE_RETURNICMP: 2338 r.rule_flag |= PFRULE_RETURNICMP; 2339 r.return_icmp = $1.w; 2340 r.return_icmp6 = $1.w2; 2341 break; 2342 case PFRULE_RETURN: 2343 r.rule_flag |= PFRULE_RETURN; 2344 r.return_icmp = $1.w; 2345 r.return_icmp6 = $1.w2; 2346 break; 2347 } 2348 r.direction = $2; 2349 r.log = $3.log; 2350 r.logif = $3.logif; 2351 r.quick = $3.quick; 2352 r.prob = $9.prob; 2353 r.rtableid = $9.rtableid; 2354 2355 if ($9.marker & FOM_PRIO) { 2356 if ($9.prio == 0) 2357 r.prio = PF_PRIO_ZERO; 2358 else 2359 r.prio = $9.prio; 2360 } 2361 if ($9.marker & FOM_SETPRIO) { 2362 r.set_prio[0] = $9.set_prio[0]; 2363 r.set_prio[1] = $9.set_prio[1]; 2364 r.scrub_flags |= PFSTATE_SETPRIO; 2365 } 2366 2367 r.af = $6; 2368 if ($9.tag) 2369 if (strlcpy(r.tagname, $9.tag, 2370 PF_TAG_NAME_SIZE) >= PF_TAG_NAME_SIZE) { 2371 yyerror("tag too long, max %u chars", 2372 PF_TAG_NAME_SIZE - 1); 2373 YYERROR; 2374 } 2375 if ($9.match_tag) 2376 if (strlcpy(r.match_tagname, $9.match_tag, 2377 PF_TAG_NAME_SIZE) >= PF_TAG_NAME_SIZE) { 2378 yyerror("tag too long, max %u chars", 2379 PF_TAG_NAME_SIZE - 1); 2380 YYERROR; 2381 } 2382 r.match_tag_not = $9.match_tag_not; 2383 if (rule_label(&r, $9.label)) 2384 YYERROR; 2385 for (int i = 0; i < PF_RULE_MAX_LABEL_COUNT; i++) 2386 free($9.label[i]); 2387 r.ridentifier = $9.ridentifier; 2388 r.flags = $9.flags.b1; 2389 r.flagset = $9.flags.b2; 2390 if (($9.flags.b1 & $9.flags.b2) != $9.flags.b1) { 2391 yyerror("flags always false"); 2392 YYERROR; 2393 } 2394 if ($9.flags.b1 || $9.flags.b2 || $8.src_os) { 2395 for (proto = $7; proto != NULL && 2396 proto->proto != IPPROTO_TCP; 2397 proto = proto->next) 2398 ; /* nothing */ 2399 if (proto == NULL && $7 != NULL) { 2400 if ($9.flags.b1 || $9.flags.b2) 2401 yyerror( 2402 "flags only apply to tcp"); 2403 if ($8.src_os) 2404 yyerror( 2405 "OS fingerprinting only " 2406 "apply to tcp"); 2407 YYERROR; 2408 } 2409 #if 0 2410 if (($9.flags.b1 & parse_flags("S")) == 0 && 2411 $8.src_os) { 2412 yyerror("OS fingerprinting requires " 2413 "the SYN TCP flag (flags S/SA)"); 2414 YYERROR; 2415 } 2416 #endif 2417 } 2418 2419 r.tos = $9.tos; 2420 r.keep_state = $9.keep.action; 2421 o = $9.keep.options; 2422 2423 /* 'keep state' by default on pass rules. */ 2424 if (!r.keep_state && !r.action && 2425 !($9.marker & FOM_KEEP)) { 2426 r.keep_state = PF_STATE_NORMAL; 2427 o = keep_state_defaults; 2428 defaults = 1; 2429 } 2430 2431 while (o) { 2432 struct node_state_opt *p = o; 2433 2434 switch (o->type) { 2435 case PF_STATE_OPT_MAX: 2436 if (r.max_states) { 2437 yyerror("state option 'max' " 2438 "multiple definitions"); 2439 YYERROR; 2440 } 2441 r.max_states = o->data.max_states; 2442 break; 2443 case PF_STATE_OPT_NOSYNC: 2444 if (r.rule_flag & PFRULE_NOSYNC) { 2445 yyerror("state option 'sync' " 2446 "multiple definitions"); 2447 YYERROR; 2448 } 2449 r.rule_flag |= PFRULE_NOSYNC; 2450 break; 2451 case PF_STATE_OPT_SRCTRACK: 2452 if (srctrack) { 2453 yyerror("state option " 2454 "'source-track' " 2455 "multiple definitions"); 2456 YYERROR; 2457 } 2458 srctrack = o->data.src_track; 2459 r.rule_flag |= PFRULE_SRCTRACK; 2460 break; 2461 case PF_STATE_OPT_MAX_SRC_STATES: 2462 if (r.max_src_states) { 2463 yyerror("state option " 2464 "'max-src-states' " 2465 "multiple definitions"); 2466 YYERROR; 2467 } 2468 if (o->data.max_src_states == 0) { 2469 yyerror("'max-src-states' must " 2470 "be > 0"); 2471 YYERROR; 2472 } 2473 r.max_src_states = 2474 o->data.max_src_states; 2475 r.rule_flag |= PFRULE_SRCTRACK; 2476 break; 2477 case PF_STATE_OPT_OVERLOAD: 2478 if (r.overload_tblname[0]) { 2479 yyerror("multiple 'overload' " 2480 "table definitions"); 2481 YYERROR; 2482 } 2483 if (strlcpy(r.overload_tblname, 2484 o->data.overload.tblname, 2485 PF_TABLE_NAME_SIZE) >= 2486 PF_TABLE_NAME_SIZE) { 2487 yyerror("state option: " 2488 "strlcpy"); 2489 YYERROR; 2490 } 2491 r.flush = o->data.overload.flush; 2492 break; 2493 case PF_STATE_OPT_MAX_SRC_CONN: 2494 if (r.max_src_conn) { 2495 yyerror("state option " 2496 "'max-src-conn' " 2497 "multiple definitions"); 2498 YYERROR; 2499 } 2500 if (o->data.max_src_conn == 0) { 2501 yyerror("'max-src-conn' " 2502 "must be > 0"); 2503 YYERROR; 2504 } 2505 r.max_src_conn = 2506 o->data.max_src_conn; 2507 r.rule_flag |= PFRULE_SRCTRACK | 2508 PFRULE_RULESRCTRACK; 2509 break; 2510 case PF_STATE_OPT_MAX_SRC_CONN_RATE: 2511 if (r.max_src_conn_rate.limit) { 2512 yyerror("state option " 2513 "'max-src-conn-rate' " 2514 "multiple definitions"); 2515 YYERROR; 2516 } 2517 if (!o->data.max_src_conn_rate.limit || 2518 !o->data.max_src_conn_rate.seconds) { 2519 yyerror("'max-src-conn-rate' " 2520 "values must be > 0"); 2521 YYERROR; 2522 } 2523 if (o->data.max_src_conn_rate.limit > 2524 PF_THRESHOLD_MAX) { 2525 yyerror("'max-src-conn-rate' " 2526 "maximum rate must be < %u", 2527 PF_THRESHOLD_MAX); 2528 YYERROR; 2529 } 2530 r.max_src_conn_rate.limit = 2531 o->data.max_src_conn_rate.limit; 2532 r.max_src_conn_rate.seconds = 2533 o->data.max_src_conn_rate.seconds; 2534 r.rule_flag |= PFRULE_SRCTRACK | 2535 PFRULE_RULESRCTRACK; 2536 break; 2537 case PF_STATE_OPT_MAX_SRC_NODES: 2538 if (r.max_src_nodes) { 2539 yyerror("state option " 2540 "'max-src-nodes' " 2541 "multiple definitions"); 2542 YYERROR; 2543 } 2544 if (o->data.max_src_nodes == 0) { 2545 yyerror("'max-src-nodes' must " 2546 "be > 0"); 2547 YYERROR; 2548 } 2549 r.max_src_nodes = 2550 o->data.max_src_nodes; 2551 r.rule_flag |= PFRULE_SRCTRACK | 2552 PFRULE_RULESRCTRACK; 2553 break; 2554 case PF_STATE_OPT_STATELOCK: 2555 if (statelock) { 2556 yyerror("state locking option: " 2557 "multiple definitions"); 2558 YYERROR; 2559 } 2560 statelock = 1; 2561 r.rule_flag |= o->data.statelock; 2562 break; 2563 case PF_STATE_OPT_SLOPPY: 2564 if (r.rule_flag & PFRULE_STATESLOPPY) { 2565 yyerror("state sloppy option: " 2566 "multiple definitions"); 2567 YYERROR; 2568 } 2569 r.rule_flag |= PFRULE_STATESLOPPY; 2570 break; 2571 case PF_STATE_OPT_TIMEOUT: 2572 if (o->data.timeout.number == 2573 PFTM_ADAPTIVE_START || 2574 o->data.timeout.number == 2575 PFTM_ADAPTIVE_END) 2576 adaptive = 1; 2577 if (r.timeout[o->data.timeout.number]) { 2578 yyerror("state timeout %s " 2579 "multiple definitions", 2580 pf_timeouts[o->data. 2581 timeout.number].name); 2582 YYERROR; 2583 } 2584 r.timeout[o->data.timeout.number] = 2585 o->data.timeout.seconds; 2586 } 2587 o = o->next; 2588 if (!defaults) 2589 free(p); 2590 } 2591 2592 /* 'flags S/SA' by default on stateful rules */ 2593 if (!r.action && !r.flags && !r.flagset && 2594 !$9.fragment && !($9.marker & FOM_FLAGS) && 2595 r.keep_state) { 2596 r.flags = parse_flags("S"); 2597 r.flagset = parse_flags("SA"); 2598 } 2599 if (!adaptive && r.max_states) { 2600 r.timeout[PFTM_ADAPTIVE_START] = 2601 (r.max_states / 10) * 6; 2602 r.timeout[PFTM_ADAPTIVE_END] = 2603 (r.max_states / 10) * 12; 2604 } 2605 if (r.rule_flag & PFRULE_SRCTRACK) { 2606 if (srctrack == PF_SRCTRACK_GLOBAL && 2607 r.max_src_nodes) { 2608 yyerror("'max-src-nodes' is " 2609 "incompatible with " 2610 "'source-track global'"); 2611 YYERROR; 2612 } 2613 if (srctrack == PF_SRCTRACK_GLOBAL && 2614 r.max_src_conn) { 2615 yyerror("'max-src-conn' is " 2616 "incompatible with " 2617 "'source-track global'"); 2618 YYERROR; 2619 } 2620 if (srctrack == PF_SRCTRACK_GLOBAL && 2621 r.max_src_conn_rate.seconds) { 2622 yyerror("'max-src-conn-rate' is " 2623 "incompatible with " 2624 "'source-track global'"); 2625 YYERROR; 2626 } 2627 if (r.timeout[PFTM_SRC_NODE] < 2628 r.max_src_conn_rate.seconds) 2629 r.timeout[PFTM_SRC_NODE] = 2630 r.max_src_conn_rate.seconds; 2631 r.rule_flag |= PFRULE_SRCTRACK; 2632 if (srctrack == PF_SRCTRACK_RULE) 2633 r.rule_flag |= PFRULE_RULESRCTRACK; 2634 } 2635 if (r.keep_state && !statelock) 2636 r.rule_flag |= default_statelock; 2637 2638 if ($9.fragment) 2639 r.rule_flag |= PFRULE_FRAGMENT; 2640 r.allow_opts = $9.allowopts; 2641 2642 decide_address_family($8.src.host, &r.af); 2643 decide_address_family($8.dst.host, &r.af); 2644 2645 if ($5.rt) { 2646 if (!r.direction) { 2647 yyerror("direction must be explicit " 2648 "with rules that specify routing"); 2649 YYERROR; 2650 } 2651 r.rt = $5.rt; 2652 r.rpool.opts = $5.pool_opts; 2653 if ($5.key != NULL) 2654 memcpy(&r.rpool.key, $5.key, 2655 sizeof(struct pf_poolhashkey)); 2656 } 2657 if (r.rt) { 2658 decide_address_family($5.host, &r.af); 2659 remove_invalid_hosts(&$5.host, &r.af); 2660 if ($5.host == NULL) { 2661 yyerror("no routing address with " 2662 "matching address family found."); 2663 YYERROR; 2664 } 2665 if ((r.rpool.opts & PF_POOL_TYPEMASK) == 2666 PF_POOL_NONE && ($5.host->next != NULL || 2667 $5.host->addr.type == PF_ADDR_TABLE || 2668 DYNIF_MULTIADDR($5.host->addr))) 2669 r.rpool.opts |= PF_POOL_ROUNDROBIN; 2670 if ((r.rpool.opts & PF_POOL_TYPEMASK) != 2671 PF_POOL_ROUNDROBIN && 2672 disallow_table($5.host, "tables are only " 2673 "supported in round-robin routing pools")) 2674 YYERROR; 2675 if ((r.rpool.opts & PF_POOL_TYPEMASK) != 2676 PF_POOL_ROUNDROBIN && 2677 disallow_alias($5.host, "interface (%s) " 2678 "is only supported in round-robin " 2679 "routing pools")) 2680 YYERROR; 2681 if ($5.host->next != NULL) { 2682 if ((r.rpool.opts & PF_POOL_TYPEMASK) != 2683 PF_POOL_ROUNDROBIN) { 2684 yyerror("r.rpool.opts must " 2685 "be PF_POOL_ROUNDROBIN"); 2686 YYERROR; 2687 } 2688 } 2689 } 2690 if ($9.queues.qname != NULL) { 2691 if (strlcpy(r.qname, $9.queues.qname, 2692 sizeof(r.qname)) >= sizeof(r.qname)) { 2693 yyerror("rule qname too long (max " 2694 "%d chars)", sizeof(r.qname)-1); 2695 YYERROR; 2696 } 2697 free($9.queues.qname); 2698 } 2699 if ($9.queues.pqname != NULL) { 2700 if (strlcpy(r.pqname, $9.queues.pqname, 2701 sizeof(r.pqname)) >= sizeof(r.pqname)) { 2702 yyerror("rule pqname too long (max " 2703 "%d chars)", sizeof(r.pqname)-1); 2704 YYERROR; 2705 } 2706 free($9.queues.pqname); 2707 } 2708 #ifdef __FreeBSD__ 2709 r.divert.port = $9.divert.port; 2710 #else 2711 if ((r.divert.port = $9.divert.port)) { 2712 if (r.direction == PF_OUT) { 2713 if ($9.divert.addr) { 2714 yyerror("address specified " 2715 "for outgoing divert"); 2716 YYERROR; 2717 } 2718 bzero(&r.divert.addr, 2719 sizeof(r.divert.addr)); 2720 } else { 2721 if (!$9.divert.addr) { 2722 yyerror("no address specified " 2723 "for incoming divert"); 2724 YYERROR; 2725 } 2726 if ($9.divert.addr->af != r.af) { 2727 yyerror("address family " 2728 "mismatch for divert"); 2729 YYERROR; 2730 } 2731 r.divert.addr = 2732 $9.divert.addr->addr.v.a.addr; 2733 } 2734 } 2735 #endif 2736 2737 if ($9.dnpipe || $9.dnrpipe) { 2738 r.dnpipe = $9.dnpipe; 2739 r.dnrpipe = $9.dnrpipe; 2740 if ($9.free_flags & PFRULE_DN_IS_PIPE) 2741 r.free_flags |= PFRULE_DN_IS_PIPE; 2742 else 2743 r.free_flags |= PFRULE_DN_IS_QUEUE; 2744 } 2745 2746 expand_rule(&r, $4, $5.host, $7, $8.src_os, 2747 $8.src.host, $8.src.port, $8.dst.host, $8.dst.port, 2748 $9.uid, $9.gid, $9.icmpspec, ""); 2749 } 2750 ; 2751 2752 filter_opts : { 2753 bzero(&filter_opts, sizeof filter_opts); 2754 filter_opts.rtableid = -1; 2755 } 2756 filter_opts_l 2757 { $$ = filter_opts; } 2758 | /* empty */ { 2759 bzero(&filter_opts, sizeof filter_opts); 2760 filter_opts.rtableid = -1; 2761 $$ = filter_opts; 2762 } 2763 ; 2764 2765 filter_opts_l : filter_opts_l filter_opt 2766 | filter_opt 2767 ; 2768 2769 filter_opt : USER uids { 2770 if (filter_opts.uid) 2771 $2->tail->next = filter_opts.uid; 2772 filter_opts.uid = $2; 2773 } 2774 | GROUP gids { 2775 if (filter_opts.gid) 2776 $2->tail->next = filter_opts.gid; 2777 filter_opts.gid = $2; 2778 } 2779 | flags { 2780 if (filter_opts.marker & FOM_FLAGS) { 2781 yyerror("flags cannot be redefined"); 2782 YYERROR; 2783 } 2784 filter_opts.marker |= FOM_FLAGS; 2785 filter_opts.flags.b1 |= $1.b1; 2786 filter_opts.flags.b2 |= $1.b2; 2787 filter_opts.flags.w |= $1.w; 2788 filter_opts.flags.w2 |= $1.w2; 2789 } 2790 | icmpspec { 2791 if (filter_opts.marker & FOM_ICMP) { 2792 yyerror("icmp-type cannot be redefined"); 2793 YYERROR; 2794 } 2795 filter_opts.marker |= FOM_ICMP; 2796 filter_opts.icmpspec = $1; 2797 } 2798 | PRIO NUMBER { 2799 if (filter_opts.marker & FOM_PRIO) { 2800 yyerror("prio cannot be redefined"); 2801 YYERROR; 2802 } 2803 if ($2 < 0 || $2 > PF_PRIO_MAX) { 2804 yyerror("prio must be 0 - %u", PF_PRIO_MAX); 2805 YYERROR; 2806 } 2807 filter_opts.marker |= FOM_PRIO; 2808 filter_opts.prio = $2; 2809 } 2810 | TOS tos { 2811 if (filter_opts.marker & FOM_TOS) { 2812 yyerror("tos cannot be redefined"); 2813 YYERROR; 2814 } 2815 filter_opts.marker |= FOM_TOS; 2816 filter_opts.tos = $2; 2817 } 2818 | keep { 2819 if (filter_opts.marker & FOM_KEEP) { 2820 yyerror("modulate or keep cannot be redefined"); 2821 YYERROR; 2822 } 2823 filter_opts.marker |= FOM_KEEP; 2824 filter_opts.keep.action = $1.action; 2825 filter_opts.keep.options = $1.options; 2826 } 2827 | RIDENTIFIER number { 2828 filter_opts.ridentifier = $2; 2829 } 2830 | FRAGMENT { 2831 filter_opts.fragment = 1; 2832 } 2833 | ALLOWOPTS { 2834 filter_opts.allowopts = 1; 2835 } 2836 | label { 2837 if (filter_opts.labelcount >= PF_RULE_MAX_LABEL_COUNT) { 2838 yyerror("label can only be used %d times", PF_RULE_MAX_LABEL_COUNT); 2839 YYERROR; 2840 } 2841 filter_opts.label[filter_opts.labelcount++] = $1; 2842 } 2843 | qname { 2844 if (filter_opts.queues.qname) { 2845 yyerror("queue cannot be redefined"); 2846 YYERROR; 2847 } 2848 filter_opts.queues = $1; 2849 } 2850 | DNPIPE number { 2851 filter_opts.dnpipe = $2; 2852 filter_opts.free_flags |= PFRULE_DN_IS_PIPE; 2853 } 2854 | DNPIPE '(' number ')' { 2855 filter_opts.dnpipe = $3; 2856 filter_opts.free_flags |= PFRULE_DN_IS_PIPE; 2857 } 2858 | DNPIPE '(' number comma number ')' { 2859 filter_opts.dnrpipe = $5; 2860 filter_opts.dnpipe = $3; 2861 filter_opts.free_flags |= PFRULE_DN_IS_PIPE; 2862 } 2863 | DNQUEUE number { 2864 filter_opts.dnpipe = $2; 2865 filter_opts.free_flags |= PFRULE_DN_IS_QUEUE; 2866 } 2867 | DNQUEUE '(' number comma number ')' { 2868 filter_opts.dnrpipe = $5; 2869 filter_opts.dnpipe = $3; 2870 filter_opts.free_flags |= PFRULE_DN_IS_QUEUE; 2871 } 2872 | DNQUEUE '(' number ')' { 2873 filter_opts.dnpipe = $3; 2874 filter_opts.free_flags |= PFRULE_DN_IS_QUEUE; 2875 } 2876 | TAG string { 2877 filter_opts.tag = $2; 2878 } 2879 | not TAGGED string { 2880 filter_opts.match_tag = $3; 2881 filter_opts.match_tag_not = $1; 2882 } 2883 | PROBABILITY probability { 2884 double p; 2885 2886 p = floor($2 * UINT_MAX + 0.5); 2887 if (p < 0.0 || p > UINT_MAX) { 2888 yyerror("invalid probability: %lf", p); 2889 YYERROR; 2890 } 2891 filter_opts.prob = (u_int32_t)p; 2892 if (filter_opts.prob == 0) 2893 filter_opts.prob = 1; 2894 } 2895 | RTABLE NUMBER { 2896 if ($2 < 0 || $2 > rt_tableid_max()) { 2897 yyerror("invalid rtable id"); 2898 YYERROR; 2899 } 2900 filter_opts.rtableid = $2; 2901 } 2902 | DIVERTTO portplain { 2903 #ifdef __FreeBSD__ 2904 filter_opts.divert.port = $2.a; 2905 if (!filter_opts.divert.port) { 2906 yyerror("invalid divert port: %u", ntohs($2.a)); 2907 YYERROR; 2908 } 2909 #endif 2910 } 2911 | DIVERTTO STRING PORT portplain { 2912 #ifndef __FreeBSD__ 2913 if ((filter_opts.divert.addr = host($2)) == NULL) { 2914 yyerror("could not parse divert address: %s", 2915 $2); 2916 free($2); 2917 YYERROR; 2918 } 2919 #else 2920 if ($2) 2921 #endif 2922 free($2); 2923 filter_opts.divert.port = $4.a; 2924 if (!filter_opts.divert.port) { 2925 yyerror("invalid divert port: %u", ntohs($4.a)); 2926 YYERROR; 2927 } 2928 } 2929 | DIVERTREPLY { 2930 #ifdef __FreeBSD__ 2931 yyerror("divert-reply has no meaning in FreeBSD pf(4)"); 2932 YYERROR; 2933 #else 2934 filter_opts.divert.port = 1; /* some random value */ 2935 #endif 2936 } 2937 | filter_sets 2938 ; 2939 2940 filter_sets : SET '(' filter_sets_l ')' { $$ = filter_opts; } 2941 | SET filter_set { $$ = filter_opts; } 2942 ; 2943 2944 filter_sets_l : filter_sets_l comma filter_set 2945 | filter_set 2946 ; 2947 2948 filter_set : prio { 2949 if (filter_opts.marker & FOM_SETPRIO) { 2950 yyerror("prio cannot be redefined"); 2951 YYERROR; 2952 } 2953 filter_opts.marker |= FOM_SETPRIO; 2954 filter_opts.set_prio[0] = $1.b1; 2955 filter_opts.set_prio[1] = $1.b2; 2956 } 2957 prio : PRIO NUMBER { 2958 if ($2 < 0 || $2 > PF_PRIO_MAX) { 2959 yyerror("prio must be 0 - %u", PF_PRIO_MAX); 2960 YYERROR; 2961 } 2962 $$.b1 = $$.b2 = $2; 2963 } 2964 | PRIO '(' NUMBER comma NUMBER ')' { 2965 if ($3 < 0 || $3 > PF_PRIO_MAX || 2966 $5 < 0 || $5 > PF_PRIO_MAX) { 2967 yyerror("prio must be 0 - %u", PF_PRIO_MAX); 2968 YYERROR; 2969 } 2970 $$.b1 = $3; 2971 $$.b2 = $5; 2972 } 2973 ; 2974 2975 probability : STRING { 2976 char *e; 2977 double p = strtod($1, &e); 2978 2979 if (*e == '%') { 2980 p *= 0.01; 2981 e++; 2982 } 2983 if (*e) { 2984 yyerror("invalid probability: %s", $1); 2985 free($1); 2986 YYERROR; 2987 } 2988 free($1); 2989 $$ = p; 2990 } 2991 | NUMBER { 2992 $$ = (double)$1; 2993 } 2994 ; 2995 2996 2997 action : PASS { 2998 $$.b1 = PF_PASS; 2999 $$.b2 = failpolicy; 3000 $$.w = returnicmpdefault; 3001 $$.w2 = returnicmp6default; 3002 } 3003 | MATCH { $$.b1 = PF_MATCH; $$.b2 = $$.w = 0; } 3004 | BLOCK blockspec { $$ = $2; $$.b1 = PF_DROP; } 3005 ; 3006 3007 blockspec : /* empty */ { 3008 $$.b2 = blockpolicy; 3009 $$.w = returnicmpdefault; 3010 $$.w2 = returnicmp6default; 3011 } 3012 | DROP { 3013 $$.b2 = PFRULE_DROP; 3014 $$.w = 0; 3015 $$.w2 = 0; 3016 } 3017 | RETURNRST { 3018 $$.b2 = PFRULE_RETURNRST; 3019 $$.w = 0; 3020 $$.w2 = 0; 3021 } 3022 | RETURNRST '(' TTL NUMBER ')' { 3023 if ($4 < 0 || $4 > 255) { 3024 yyerror("illegal ttl value %d", $4); 3025 YYERROR; 3026 } 3027 $$.b2 = PFRULE_RETURNRST; 3028 $$.w = $4; 3029 $$.w2 = 0; 3030 } 3031 | RETURNICMP { 3032 $$.b2 = PFRULE_RETURNICMP; 3033 $$.w = returnicmpdefault; 3034 $$.w2 = returnicmp6default; 3035 } 3036 | RETURNICMP6 { 3037 $$.b2 = PFRULE_RETURNICMP; 3038 $$.w = returnicmpdefault; 3039 $$.w2 = returnicmp6default; 3040 } 3041 | RETURNICMP '(' reticmpspec ')' { 3042 $$.b2 = PFRULE_RETURNICMP; 3043 $$.w = $3; 3044 $$.w2 = returnicmpdefault; 3045 } 3046 | RETURNICMP6 '(' reticmp6spec ')' { 3047 $$.b2 = PFRULE_RETURNICMP; 3048 $$.w = returnicmpdefault; 3049 $$.w2 = $3; 3050 } 3051 | RETURNICMP '(' reticmpspec comma reticmp6spec ')' { 3052 $$.b2 = PFRULE_RETURNICMP; 3053 $$.w = $3; 3054 $$.w2 = $5; 3055 } 3056 | RETURN { 3057 $$.b2 = PFRULE_RETURN; 3058 $$.w = returnicmpdefault; 3059 $$.w2 = returnicmp6default; 3060 } 3061 ; 3062 3063 reticmpspec : STRING { 3064 if (!($$ = parseicmpspec($1, AF_INET))) { 3065 free($1); 3066 YYERROR; 3067 } 3068 free($1); 3069 } 3070 | NUMBER { 3071 u_int8_t icmptype; 3072 3073 if ($1 < 0 || $1 > 255) { 3074 yyerror("invalid icmp code %lu", $1); 3075 YYERROR; 3076 } 3077 icmptype = returnicmpdefault >> 8; 3078 $$ = (icmptype << 8 | $1); 3079 } 3080 ; 3081 3082 reticmp6spec : STRING { 3083 if (!($$ = parseicmpspec($1, AF_INET6))) { 3084 free($1); 3085 YYERROR; 3086 } 3087 free($1); 3088 } 3089 | NUMBER { 3090 u_int8_t icmptype; 3091 3092 if ($1 < 0 || $1 > 255) { 3093 yyerror("invalid icmp code %lu", $1); 3094 YYERROR; 3095 } 3096 icmptype = returnicmp6default >> 8; 3097 $$ = (icmptype << 8 | $1); 3098 } 3099 ; 3100 3101 dir : /* empty */ { $$ = PF_INOUT; } 3102 | IN { $$ = PF_IN; } 3103 | OUT { $$ = PF_OUT; } 3104 ; 3105 3106 quick : /* empty */ { $$.quick = 0; } 3107 | QUICK { $$.quick = 1; } 3108 ; 3109 3110 logquick : /* empty */ { $$.log = 0; $$.quick = 0; $$.logif = 0; } 3111 | log { $$ = $1; $$.quick = 0; } 3112 | QUICK { $$.quick = 1; $$.log = 0; $$.logif = 0; } 3113 | log QUICK { $$ = $1; $$.quick = 1; } 3114 | QUICK log { $$ = $2; $$.quick = 1; } 3115 ; 3116 3117 log : LOG { $$.log = PF_LOG; $$.logif = 0; } 3118 | LOG '(' logopts ')' { 3119 $$.log = PF_LOG | $3.log; 3120 $$.logif = $3.logif; 3121 } 3122 ; 3123 3124 logopts : logopt { $$ = $1; } 3125 | logopts comma logopt { 3126 $$.log = $1.log | $3.log; 3127 $$.logif = $3.logif; 3128 if ($$.logif == 0) 3129 $$.logif = $1.logif; 3130 } 3131 ; 3132 3133 logopt : ALL { $$.log = PF_LOG_ALL; $$.logif = 0; } 3134 | USER { $$.log = PF_LOG_SOCKET_LOOKUP; $$.logif = 0; } 3135 | GROUP { $$.log = PF_LOG_SOCKET_LOOKUP; $$.logif = 0; } 3136 | TO string { 3137 const char *errstr; 3138 u_int i; 3139 3140 $$.log = 0; 3141 if (strncmp($2, "pflog", 5)) { 3142 yyerror("%s: should be a pflog interface", $2); 3143 free($2); 3144 YYERROR; 3145 } 3146 i = strtonum($2 + 5, 0, 255, &errstr); 3147 if (errstr) { 3148 yyerror("%s: %s", $2, errstr); 3149 free($2); 3150 YYERROR; 3151 } 3152 free($2); 3153 $$.logif = i; 3154 } 3155 ; 3156 3157 interface : /* empty */ { $$ = NULL; } 3158 | ON if_item_not { $$ = $2; } 3159 | ON '{' optnl if_list '}' { $$ = $4; } 3160 ; 3161 3162 if_list : if_item_not optnl { $$ = $1; } 3163 | if_list comma if_item_not optnl { 3164 $1->tail->next = $3; 3165 $1->tail = $3; 3166 $$ = $1; 3167 } 3168 ; 3169 3170 if_item_not : not if_item { $$ = $2; $$->not = $1; } 3171 ; 3172 3173 if_item : STRING { 3174 struct node_host *n; 3175 3176 $$ = calloc(1, sizeof(struct node_if)); 3177 if ($$ == NULL) 3178 err(1, "if_item: calloc"); 3179 if (strlcpy($$->ifname, $1, sizeof($$->ifname)) >= 3180 sizeof($$->ifname)) { 3181 free($1); 3182 free($$); 3183 yyerror("interface name too long"); 3184 YYERROR; 3185 } 3186 3187 if ((n = ifa_exists($1)) != NULL) 3188 $$->ifa_flags = n->ifa_flags; 3189 3190 free($1); 3191 $$->not = 0; 3192 $$->next = NULL; 3193 $$->tail = $$; 3194 } 3195 ; 3196 3197 af : /* empty */ { $$ = 0; } 3198 | INET { $$ = AF_INET; } 3199 | INET6 { $$ = AF_INET6; } 3200 ; 3201 3202 etherproto : /* empty */ { $$ = NULL; } 3203 | PROTO etherproto_item { $$ = $2; } 3204 | PROTO '{' optnl etherproto_list '}' { $$ = $4; } 3205 ; 3206 3207 etherproto_list : etherproto_item optnl { $$ = $1; } 3208 | etherproto_list comma etherproto_item optnl { 3209 $1->tail->next = $3; 3210 $1->tail = $3; 3211 $$ = $1; 3212 } 3213 ; 3214 3215 etherproto_item : etherprotoval { 3216 u_int16_t pr; 3217 3218 pr = (u_int16_t)$1; 3219 if (pr == 0) { 3220 yyerror("proto 0 cannot be used"); 3221 YYERROR; 3222 } 3223 $$ = calloc(1, sizeof(struct node_proto)); 3224 if ($$ == NULL) 3225 err(1, "proto_item: calloc"); 3226 $$->proto = pr; 3227 $$->next = NULL; 3228 $$->tail = $$; 3229 } 3230 ; 3231 3232 etherprotoval : NUMBER { 3233 if ($1 < 0 || $1 > 65565) { 3234 yyerror("protocol outside range"); 3235 YYERROR; 3236 } 3237 } 3238 | STRING 3239 { 3240 if (!strncmp($1, "0x", 2)) { 3241 if (sscanf($1, "0x%4x", &$$) != 1) { 3242 free($1); 3243 yyerror("invalid EtherType hex"); 3244 YYERROR; 3245 } 3246 } else { 3247 yyerror("Symbolic EtherType not yet supported"); 3248 } 3249 } 3250 ; 3251 3252 proto : /* empty */ { $$ = NULL; } 3253 | PROTO proto_item { $$ = $2; } 3254 | PROTO '{' optnl proto_list '}' { $$ = $4; } 3255 ; 3256 3257 proto_list : proto_item optnl { $$ = $1; } 3258 | proto_list comma proto_item optnl { 3259 $1->tail->next = $3; 3260 $1->tail = $3; 3261 $$ = $1; 3262 } 3263 ; 3264 3265 proto_item : protoval { 3266 u_int8_t pr; 3267 3268 pr = (u_int8_t)$1; 3269 if (pr == 0) { 3270 yyerror("proto 0 cannot be used"); 3271 YYERROR; 3272 } 3273 $$ = calloc(1, sizeof(struct node_proto)); 3274 if ($$ == NULL) 3275 err(1, "proto_item: calloc"); 3276 $$->proto = pr; 3277 $$->next = NULL; 3278 $$->tail = $$; 3279 } 3280 ; 3281 3282 protoval : STRING { 3283 struct protoent *p; 3284 3285 p = getprotobyname($1); 3286 if (p == NULL) { 3287 yyerror("unknown protocol %s", $1); 3288 free($1); 3289 YYERROR; 3290 } 3291 $$ = p->p_proto; 3292 free($1); 3293 } 3294 | NUMBER { 3295 if ($1 < 0 || $1 > 255) { 3296 yyerror("protocol outside range"); 3297 YYERROR; 3298 } 3299 } 3300 ; 3301 3302 l3fromto : /* empty */ { 3303 bzero(&$$, sizeof($$)); 3304 } 3305 | L3 fromto { 3306 if ($2.src.host != NULL && 3307 $2.src.host->addr.type != PF_ADDR_ADDRMASK && 3308 $2.src.host->addr.type != PF_ADDR_TABLE) { 3309 yyerror("from must be an address or table"); 3310 YYERROR; 3311 } 3312 if ($2.dst.host != NULL && 3313 $2.dst.host->addr.type != PF_ADDR_ADDRMASK && 3314 $2.dst.host->addr.type != PF_ADDR_TABLE) { 3315 yyerror("to must be an address or table"); 3316 YYERROR; 3317 } 3318 $$ = $2; 3319 } 3320 ; 3321 etherfromto : ALL { 3322 $$.src = NULL; 3323 $$.dst = NULL; 3324 } 3325 | etherfrom etherto { 3326 $$.src = $1.mac; 3327 $$.dst = $2.mac; 3328 } 3329 ; 3330 3331 etherfrom : /* emtpy */ { 3332 bzero(&$$, sizeof($$)); 3333 } 3334 | FROM macspec { 3335 $$.mac = $2; 3336 } 3337 ; 3338 3339 etherto : /* empty */ { 3340 bzero(&$$, sizeof($$)); 3341 } 3342 | TO macspec { 3343 $$.mac = $2; 3344 } 3345 ; 3346 3347 mac : string '/' NUMBER { 3348 $$ = node_mac_from_string_masklen($1, $3); 3349 free($1); 3350 if ($$ == NULL) 3351 YYERROR; 3352 } 3353 | string { 3354 if (strchr($1, '&')) { 3355 /* mac&mask */ 3356 char *mac = strtok($1, "&"); 3357 char *mask = strtok(NULL, "&"); 3358 $$ = node_mac_from_string_mask(mac, mask); 3359 } else { 3360 $$ = node_mac_from_string($1); 3361 } 3362 free($1); 3363 if ($$ == NULL) 3364 YYERROR; 3365 3366 } 3367 xmac : not mac { 3368 struct node_mac *n; 3369 3370 for (n = $2; n != NULL; n = n->next) 3371 n->neg = $1; 3372 $$ = $2; 3373 } 3374 ; 3375 macspec : xmac { 3376 $$ = $1; 3377 } 3378 | '{' optnl mac_list '}' 3379 { 3380 $$ = $3; 3381 } 3382 ; 3383 mac_list : xmac optnl { 3384 $$ = $1; 3385 } 3386 | mac_list comma xmac { 3387 if ($3 == NULL) 3388 $$ = $1; 3389 else if ($1 == NULL) 3390 $$ = $3; 3391 else { 3392 $1->tail->next = $3; 3393 $1->tail = $3->tail; 3394 $$ = $1; 3395 } 3396 } 3397 3398 fromto : ALL { 3399 $$.src.host = NULL; 3400 $$.src.port = NULL; 3401 $$.dst.host = NULL; 3402 $$.dst.port = NULL; 3403 $$.src_os = NULL; 3404 } 3405 | from os to { 3406 $$.src = $1; 3407 $$.src_os = $2; 3408 $$.dst = $3; 3409 } 3410 ; 3411 3412 os : /* empty */ { $$ = NULL; } 3413 | OS xos { $$ = $2; } 3414 | OS '{' optnl os_list '}' { $$ = $4; } 3415 ; 3416 3417 xos : STRING { 3418 $$ = calloc(1, sizeof(struct node_os)); 3419 if ($$ == NULL) 3420 err(1, "os: calloc"); 3421 $$->os = $1; 3422 $$->tail = $$; 3423 } 3424 ; 3425 3426 os_list : xos optnl { $$ = $1; } 3427 | os_list comma xos optnl { 3428 $1->tail->next = $3; 3429 $1->tail = $3; 3430 $$ = $1; 3431 } 3432 ; 3433 3434 from : /* empty */ { 3435 $$.host = NULL; 3436 $$.port = NULL; 3437 } 3438 | FROM ipportspec { 3439 $$ = $2; 3440 } 3441 ; 3442 3443 to : /* empty */ { 3444 $$.host = NULL; 3445 $$.port = NULL; 3446 } 3447 | TO ipportspec { 3448 if (disallow_urpf_failed($2.host, "\"urpf-failed\" is " 3449 "not permitted in a destination address")) 3450 YYERROR; 3451 $$ = $2; 3452 } 3453 ; 3454 3455 ipportspec : ipspec { 3456 $$.host = $1; 3457 $$.port = NULL; 3458 } 3459 | ipspec PORT portspec { 3460 $$.host = $1; 3461 $$.port = $3; 3462 } 3463 | PORT portspec { 3464 $$.host = NULL; 3465 $$.port = $2; 3466 } 3467 ; 3468 3469 optnl : '\n' optnl 3470 | 3471 ; 3472 3473 ipspec : ANY { $$ = NULL; } 3474 | xhost { $$ = $1; } 3475 | '{' optnl host_list '}' { $$ = $3; } 3476 ; 3477 3478 toipspec : TO ipspec { $$ = $2; } 3479 | /* empty */ { $$ = NULL; } 3480 ; 3481 3482 host_list : ipspec optnl { $$ = $1; } 3483 | host_list comma ipspec optnl { 3484 if ($3 == NULL) 3485 $$ = $1; 3486 else if ($1 == NULL) 3487 $$ = $3; 3488 else { 3489 $1->tail->next = $3; 3490 $1->tail = $3->tail; 3491 $$ = $1; 3492 } 3493 } 3494 ; 3495 3496 xhost : not host { 3497 struct node_host *n; 3498 3499 for (n = $2; n != NULL; n = n->next) 3500 n->not = $1; 3501 $$ = $2; 3502 } 3503 | not NOROUTE { 3504 $$ = calloc(1, sizeof(struct node_host)); 3505 if ($$ == NULL) 3506 err(1, "xhost: calloc"); 3507 $$->addr.type = PF_ADDR_NOROUTE; 3508 $$->next = NULL; 3509 $$->not = $1; 3510 $$->tail = $$; 3511 } 3512 | not URPFFAILED { 3513 $$ = calloc(1, sizeof(struct node_host)); 3514 if ($$ == NULL) 3515 err(1, "xhost: calloc"); 3516 $$->addr.type = PF_ADDR_URPFFAILED; 3517 $$->next = NULL; 3518 $$->not = $1; 3519 $$->tail = $$; 3520 } 3521 ; 3522 3523 host : STRING { 3524 if (($$ = host($1)) == NULL) { 3525 /* error. "any" is handled elsewhere */ 3526 free($1); 3527 yyerror("could not parse host specification"); 3528 YYERROR; 3529 } 3530 free($1); 3531 3532 } 3533 | STRING '-' STRING { 3534 struct node_host *b, *e; 3535 3536 if ((b = host($1)) == NULL || (e = host($3)) == NULL) { 3537 free($1); 3538 free($3); 3539 yyerror("could not parse host specification"); 3540 YYERROR; 3541 } 3542 if (b->af != e->af || 3543 b->addr.type != PF_ADDR_ADDRMASK || 3544 e->addr.type != PF_ADDR_ADDRMASK || 3545 unmask(&b->addr.v.a.mask, b->af) != 3546 (b->af == AF_INET ? 32 : 128) || 3547 unmask(&e->addr.v.a.mask, e->af) != 3548 (e->af == AF_INET ? 32 : 128) || 3549 b->next != NULL || b->not || 3550 e->next != NULL || e->not) { 3551 free(b); 3552 free(e); 3553 free($1); 3554 free($3); 3555 yyerror("invalid address range"); 3556 YYERROR; 3557 } 3558 memcpy(&b->addr.v.a.mask, &e->addr.v.a.addr, 3559 sizeof(b->addr.v.a.mask)); 3560 b->addr.type = PF_ADDR_RANGE; 3561 $$ = b; 3562 free(e); 3563 free($1); 3564 free($3); 3565 } 3566 | STRING '/' NUMBER { 3567 char *buf; 3568 3569 if (asprintf(&buf, "%s/%lld", $1, (long long)$3) == -1) 3570 err(1, "host: asprintf"); 3571 free($1); 3572 if (($$ = host(buf)) == NULL) { 3573 /* error. "any" is handled elsewhere */ 3574 free(buf); 3575 yyerror("could not parse host specification"); 3576 YYERROR; 3577 } 3578 free(buf); 3579 } 3580 | NUMBER '/' NUMBER { 3581 char *buf; 3582 3583 /* ie. for 10/8 parsing */ 3584 #ifdef __FreeBSD__ 3585 if (asprintf(&buf, "%lld/%lld", (long long)$1, (long long)$3) == -1) 3586 #else 3587 if (asprintf(&buf, "%lld/%lld", $1, $3) == -1) 3588 #endif 3589 err(1, "host: asprintf"); 3590 if (($$ = host(buf)) == NULL) { 3591 /* error. "any" is handled elsewhere */ 3592 free(buf); 3593 yyerror("could not parse host specification"); 3594 YYERROR; 3595 } 3596 free(buf); 3597 } 3598 | dynaddr 3599 | dynaddr '/' NUMBER { 3600 struct node_host *n; 3601 3602 if ($3 < 0 || $3 > 128) { 3603 yyerror("bit number too big"); 3604 YYERROR; 3605 } 3606 $$ = $1; 3607 for (n = $1; n != NULL; n = n->next) 3608 set_ipmask(n, $3); 3609 } 3610 | '<' STRING '>' { 3611 if (strlen($2) >= PF_TABLE_NAME_SIZE) { 3612 yyerror("table name '%s' too long", $2); 3613 free($2); 3614 YYERROR; 3615 } 3616 $$ = calloc(1, sizeof(struct node_host)); 3617 if ($$ == NULL) 3618 err(1, "host: calloc"); 3619 $$->addr.type = PF_ADDR_TABLE; 3620 if (strlcpy($$->addr.v.tblname, $2, 3621 sizeof($$->addr.v.tblname)) >= 3622 sizeof($$->addr.v.tblname)) 3623 errx(1, "host: strlcpy"); 3624 free($2); 3625 $$->next = NULL; 3626 $$->tail = $$; 3627 } 3628 ; 3629 3630 number : NUMBER 3631 | STRING { 3632 u_long ulval; 3633 3634 if (atoul($1, &ulval) == -1) { 3635 yyerror("%s is not a number", $1); 3636 free($1); 3637 YYERROR; 3638 } else 3639 $$ = ulval; 3640 free($1); 3641 } 3642 ; 3643 3644 dynaddr : '(' STRING ')' { 3645 int flags = 0; 3646 char *p, *op; 3647 3648 op = $2; 3649 if (!isalpha(op[0])) { 3650 yyerror("invalid interface name '%s'", op); 3651 free(op); 3652 YYERROR; 3653 } 3654 while ((p = strrchr($2, ':')) != NULL) { 3655 if (!strcmp(p+1, "network")) 3656 flags |= PFI_AFLAG_NETWORK; 3657 else if (!strcmp(p+1, "broadcast")) 3658 flags |= PFI_AFLAG_BROADCAST; 3659 else if (!strcmp(p+1, "peer")) 3660 flags |= PFI_AFLAG_PEER; 3661 else if (!strcmp(p+1, "0")) 3662 flags |= PFI_AFLAG_NOALIAS; 3663 else { 3664 yyerror("interface %s has bad modifier", 3665 $2); 3666 free(op); 3667 YYERROR; 3668 } 3669 *p = '\0'; 3670 } 3671 if (flags & (flags - 1) & PFI_AFLAG_MODEMASK) { 3672 free(op); 3673 yyerror("illegal combination of " 3674 "interface modifiers"); 3675 YYERROR; 3676 } 3677 $$ = calloc(1, sizeof(struct node_host)); 3678 if ($$ == NULL) 3679 err(1, "address: calloc"); 3680 $$->af = 0; 3681 set_ipmask($$, 128); 3682 $$->addr.type = PF_ADDR_DYNIFTL; 3683 $$->addr.iflags = flags; 3684 if (strlcpy($$->addr.v.ifname, $2, 3685 sizeof($$->addr.v.ifname)) >= 3686 sizeof($$->addr.v.ifname)) { 3687 free(op); 3688 free($$); 3689 yyerror("interface name too long"); 3690 YYERROR; 3691 } 3692 free(op); 3693 $$->next = NULL; 3694 $$->tail = $$; 3695 } 3696 ; 3697 3698 portspec : port_item { $$ = $1; } 3699 | '{' optnl port_list '}' { $$ = $3; } 3700 ; 3701 3702 port_list : port_item optnl { $$ = $1; } 3703 | port_list comma port_item optnl { 3704 $1->tail->next = $3; 3705 $1->tail = $3; 3706 $$ = $1; 3707 } 3708 ; 3709 3710 port_item : portrange { 3711 $$ = calloc(1, sizeof(struct node_port)); 3712 if ($$ == NULL) 3713 err(1, "port_item: calloc"); 3714 $$->port[0] = $1.a; 3715 $$->port[1] = $1.b; 3716 if ($1.t) 3717 $$->op = PF_OP_RRG; 3718 else 3719 $$->op = PF_OP_EQ; 3720 $$->next = NULL; 3721 $$->tail = $$; 3722 } 3723 | unaryop portrange { 3724 if ($2.t) { 3725 yyerror("':' cannot be used with an other " 3726 "port operator"); 3727 YYERROR; 3728 } 3729 $$ = calloc(1, sizeof(struct node_port)); 3730 if ($$ == NULL) 3731 err(1, "port_item: calloc"); 3732 $$->port[0] = $2.a; 3733 $$->port[1] = $2.b; 3734 $$->op = $1; 3735 $$->next = NULL; 3736 $$->tail = $$; 3737 } 3738 | portrange PORTBINARY portrange { 3739 if ($1.t || $3.t) { 3740 yyerror("':' cannot be used with an other " 3741 "port operator"); 3742 YYERROR; 3743 } 3744 $$ = calloc(1, sizeof(struct node_port)); 3745 if ($$ == NULL) 3746 err(1, "port_item: calloc"); 3747 $$->port[0] = $1.a; 3748 $$->port[1] = $3.a; 3749 $$->op = $2; 3750 $$->next = NULL; 3751 $$->tail = $$; 3752 } 3753 ; 3754 3755 portplain : numberstring { 3756 if (parseport($1, &$$, 0) == -1) { 3757 free($1); 3758 YYERROR; 3759 } 3760 free($1); 3761 } 3762 ; 3763 3764 portrange : numberstring { 3765 if (parseport($1, &$$, PPORT_RANGE) == -1) { 3766 free($1); 3767 YYERROR; 3768 } 3769 free($1); 3770 } 3771 ; 3772 3773 uids : uid_item { $$ = $1; } 3774 | '{' optnl uid_list '}' { $$ = $3; } 3775 ; 3776 3777 uid_list : uid_item optnl { $$ = $1; } 3778 | uid_list comma uid_item optnl { 3779 $1->tail->next = $3; 3780 $1->tail = $3; 3781 $$ = $1; 3782 } 3783 ; 3784 3785 uid_item : uid { 3786 $$ = calloc(1, sizeof(struct node_uid)); 3787 if ($$ == NULL) 3788 err(1, "uid_item: calloc"); 3789 $$->uid[0] = $1; 3790 $$->uid[1] = $1; 3791 $$->op = PF_OP_EQ; 3792 $$->next = NULL; 3793 $$->tail = $$; 3794 } 3795 | unaryop uid { 3796 if ($2 == UID_MAX && $1 != PF_OP_EQ && $1 != PF_OP_NE) { 3797 yyerror("user unknown requires operator = or " 3798 "!="); 3799 YYERROR; 3800 } 3801 $$ = calloc(1, sizeof(struct node_uid)); 3802 if ($$ == NULL) 3803 err(1, "uid_item: calloc"); 3804 $$->uid[0] = $2; 3805 $$->uid[1] = $2; 3806 $$->op = $1; 3807 $$->next = NULL; 3808 $$->tail = $$; 3809 } 3810 | uid PORTBINARY uid { 3811 if ($1 == UID_MAX || $3 == UID_MAX) { 3812 yyerror("user unknown requires operator = or " 3813 "!="); 3814 YYERROR; 3815 } 3816 $$ = calloc(1, sizeof(struct node_uid)); 3817 if ($$ == NULL) 3818 err(1, "uid_item: calloc"); 3819 $$->uid[0] = $1; 3820 $$->uid[1] = $3; 3821 $$->op = $2; 3822 $$->next = NULL; 3823 $$->tail = $$; 3824 } 3825 ; 3826 3827 uid : STRING { 3828 if (!strcmp($1, "unknown")) 3829 $$ = UID_MAX; 3830 else { 3831 struct passwd *pw; 3832 3833 if ((pw = getpwnam($1)) == NULL) { 3834 yyerror("unknown user %s", $1); 3835 free($1); 3836 YYERROR; 3837 } 3838 $$ = pw->pw_uid; 3839 } 3840 free($1); 3841 } 3842 | NUMBER { 3843 if ($1 < 0 || $1 >= UID_MAX) { 3844 yyerror("illegal uid value %lu", $1); 3845 YYERROR; 3846 } 3847 $$ = $1; 3848 } 3849 ; 3850 3851 gids : gid_item { $$ = $1; } 3852 | '{' optnl gid_list '}' { $$ = $3; } 3853 ; 3854 3855 gid_list : gid_item optnl { $$ = $1; } 3856 | gid_list comma gid_item optnl { 3857 $1->tail->next = $3; 3858 $1->tail = $3; 3859 $$ = $1; 3860 } 3861 ; 3862 3863 gid_item : gid { 3864 $$ = calloc(1, sizeof(struct node_gid)); 3865 if ($$ == NULL) 3866 err(1, "gid_item: calloc"); 3867 $$->gid[0] = $1; 3868 $$->gid[1] = $1; 3869 $$->op = PF_OP_EQ; 3870 $$->next = NULL; 3871 $$->tail = $$; 3872 } 3873 | unaryop gid { 3874 if ($2 == GID_MAX && $1 != PF_OP_EQ && $1 != PF_OP_NE) { 3875 yyerror("group unknown requires operator = or " 3876 "!="); 3877 YYERROR; 3878 } 3879 $$ = calloc(1, sizeof(struct node_gid)); 3880 if ($$ == NULL) 3881 err(1, "gid_item: calloc"); 3882 $$->gid[0] = $2; 3883 $$->gid[1] = $2; 3884 $$->op = $1; 3885 $$->next = NULL; 3886 $$->tail = $$; 3887 } 3888 | gid PORTBINARY gid { 3889 if ($1 == GID_MAX || $3 == GID_MAX) { 3890 yyerror("group unknown requires operator = or " 3891 "!="); 3892 YYERROR; 3893 } 3894 $$ = calloc(1, sizeof(struct node_gid)); 3895 if ($$ == NULL) 3896 err(1, "gid_item: calloc"); 3897 $$->gid[0] = $1; 3898 $$->gid[1] = $3; 3899 $$->op = $2; 3900 $$->next = NULL; 3901 $$->tail = $$; 3902 } 3903 ; 3904 3905 gid : STRING { 3906 if (!strcmp($1, "unknown")) 3907 $$ = GID_MAX; 3908 else { 3909 struct group *grp; 3910 3911 if ((grp = getgrnam($1)) == NULL) { 3912 yyerror("unknown group %s", $1); 3913 free($1); 3914 YYERROR; 3915 } 3916 $$ = grp->gr_gid; 3917 } 3918 free($1); 3919 } 3920 | NUMBER { 3921 if ($1 < 0 || $1 >= GID_MAX) { 3922 yyerror("illegal gid value %lu", $1); 3923 YYERROR; 3924 } 3925 $$ = $1; 3926 } 3927 ; 3928 3929 flag : STRING { 3930 int f; 3931 3932 if ((f = parse_flags($1)) < 0) { 3933 yyerror("bad flags %s", $1); 3934 free($1); 3935 YYERROR; 3936 } 3937 free($1); 3938 $$.b1 = f; 3939 } 3940 ; 3941 3942 flags : FLAGS flag '/' flag { $$.b1 = $2.b1; $$.b2 = $4.b1; } 3943 | FLAGS '/' flag { $$.b1 = 0; $$.b2 = $3.b1; } 3944 | FLAGS ANY { $$.b1 = 0; $$.b2 = 0; } 3945 ; 3946 3947 icmpspec : ICMPTYPE icmp_item { $$ = $2; } 3948 | ICMPTYPE '{' optnl icmp_list '}' { $$ = $4; } 3949 | ICMP6TYPE icmp6_item { $$ = $2; } 3950 | ICMP6TYPE '{' optnl icmp6_list '}' { $$ = $4; } 3951 ; 3952 3953 icmp_list : icmp_item optnl { $$ = $1; } 3954 | icmp_list comma icmp_item optnl { 3955 $1->tail->next = $3; 3956 $1->tail = $3; 3957 $$ = $1; 3958 } 3959 ; 3960 3961 icmp6_list : icmp6_item optnl { $$ = $1; } 3962 | icmp6_list comma icmp6_item optnl { 3963 $1->tail->next = $3; 3964 $1->tail = $3; 3965 $$ = $1; 3966 } 3967 ; 3968 3969 icmp_item : icmptype { 3970 $$ = calloc(1, sizeof(struct node_icmp)); 3971 if ($$ == NULL) 3972 err(1, "icmp_item: calloc"); 3973 $$->type = $1; 3974 $$->code = 0; 3975 $$->proto = IPPROTO_ICMP; 3976 $$->next = NULL; 3977 $$->tail = $$; 3978 } 3979 | icmptype CODE STRING { 3980 const struct icmpcodeent *p; 3981 3982 if ((p = geticmpcodebyname($1-1, $3, AF_INET)) == NULL) { 3983 yyerror("unknown icmp-code %s", $3); 3984 free($3); 3985 YYERROR; 3986 } 3987 3988 free($3); 3989 $$ = calloc(1, sizeof(struct node_icmp)); 3990 if ($$ == NULL) 3991 err(1, "icmp_item: calloc"); 3992 $$->type = $1; 3993 $$->code = p->code + 1; 3994 $$->proto = IPPROTO_ICMP; 3995 $$->next = NULL; 3996 $$->tail = $$; 3997 } 3998 | icmptype CODE NUMBER { 3999 if ($3 < 0 || $3 > 255) { 4000 yyerror("illegal icmp-code %lu", $3); 4001 YYERROR; 4002 } 4003 $$ = calloc(1, sizeof(struct node_icmp)); 4004 if ($$ == NULL) 4005 err(1, "icmp_item: calloc"); 4006 $$->type = $1; 4007 $$->code = $3 + 1; 4008 $$->proto = IPPROTO_ICMP; 4009 $$->next = NULL; 4010 $$->tail = $$; 4011 } 4012 ; 4013 4014 icmp6_item : icmp6type { 4015 $$ = calloc(1, sizeof(struct node_icmp)); 4016 if ($$ == NULL) 4017 err(1, "icmp_item: calloc"); 4018 $$->type = $1; 4019 $$->code = 0; 4020 $$->proto = IPPROTO_ICMPV6; 4021 $$->next = NULL; 4022 $$->tail = $$; 4023 } 4024 | icmp6type CODE STRING { 4025 const struct icmpcodeent *p; 4026 4027 if ((p = geticmpcodebyname($1-1, $3, AF_INET6)) == NULL) { 4028 yyerror("unknown icmp6-code %s", $3); 4029 free($3); 4030 YYERROR; 4031 } 4032 free($3); 4033 4034 $$ = calloc(1, sizeof(struct node_icmp)); 4035 if ($$ == NULL) 4036 err(1, "icmp_item: calloc"); 4037 $$->type = $1; 4038 $$->code = p->code + 1; 4039 $$->proto = IPPROTO_ICMPV6; 4040 $$->next = NULL; 4041 $$->tail = $$; 4042 } 4043 | icmp6type CODE NUMBER { 4044 if ($3 < 0 || $3 > 255) { 4045 yyerror("illegal icmp-code %lu", $3); 4046 YYERROR; 4047 } 4048 $$ = calloc(1, sizeof(struct node_icmp)); 4049 if ($$ == NULL) 4050 err(1, "icmp_item: calloc"); 4051 $$->type = $1; 4052 $$->code = $3 + 1; 4053 $$->proto = IPPROTO_ICMPV6; 4054 $$->next = NULL; 4055 $$->tail = $$; 4056 } 4057 ; 4058 4059 icmptype : STRING { 4060 const struct icmptypeent *p; 4061 4062 if ((p = geticmptypebyname($1, AF_INET)) == NULL) { 4063 yyerror("unknown icmp-type %s", $1); 4064 free($1); 4065 YYERROR; 4066 } 4067 $$ = p->type + 1; 4068 free($1); 4069 } 4070 | NUMBER { 4071 if ($1 < 0 || $1 > 255) { 4072 yyerror("illegal icmp-type %lu", $1); 4073 YYERROR; 4074 } 4075 $$ = $1 + 1; 4076 } 4077 ; 4078 4079 icmp6type : STRING { 4080 const struct icmptypeent *p; 4081 4082 if ((p = geticmptypebyname($1, AF_INET6)) == 4083 NULL) { 4084 yyerror("unknown icmp6-type %s", $1); 4085 free($1); 4086 YYERROR; 4087 } 4088 $$ = p->type + 1; 4089 free($1); 4090 } 4091 | NUMBER { 4092 if ($1 < 0 || $1 > 255) { 4093 yyerror("illegal icmp6-type %lu", $1); 4094 YYERROR; 4095 } 4096 $$ = $1 + 1; 4097 } 4098 ; 4099 4100 tos : STRING { 4101 int val; 4102 char *end; 4103 4104 if (map_tos($1, &val)) 4105 $$ = val; 4106 else if ($1[0] == '0' && $1[1] == 'x') { 4107 errno = 0; 4108 $$ = strtoul($1, &end, 16); 4109 if (errno || *end != '\0') 4110 $$ = 256; 4111 } else 4112 $$ = 256; /* flag bad argument */ 4113 if ($$ < 0 || $$ > 255) { 4114 yyerror("illegal tos value %s", $1); 4115 free($1); 4116 YYERROR; 4117 } 4118 free($1); 4119 } 4120 | NUMBER { 4121 $$ = $1; 4122 if ($$ < 0 || $$ > 255) { 4123 yyerror("illegal tos value %s", $1); 4124 YYERROR; 4125 } 4126 } 4127 ; 4128 4129 sourcetrack : SOURCETRACK { $$ = PF_SRCTRACK; } 4130 | SOURCETRACK GLOBAL { $$ = PF_SRCTRACK_GLOBAL; } 4131 | SOURCETRACK RULE { $$ = PF_SRCTRACK_RULE; } 4132 ; 4133 4134 statelock : IFBOUND { 4135 $$ = PFRULE_IFBOUND; 4136 } 4137 | FLOATING { 4138 $$ = 0; 4139 } 4140 ; 4141 4142 keep : NO STATE { 4143 $$.action = 0; 4144 $$.options = NULL; 4145 } 4146 | KEEP STATE state_opt_spec { 4147 $$.action = PF_STATE_NORMAL; 4148 $$.options = $3; 4149 } 4150 | MODULATE STATE state_opt_spec { 4151 $$.action = PF_STATE_MODULATE; 4152 $$.options = $3; 4153 } 4154 | SYNPROXY STATE state_opt_spec { 4155 $$.action = PF_STATE_SYNPROXY; 4156 $$.options = $3; 4157 } 4158 ; 4159 4160 flush : /* empty */ { $$ = 0; } 4161 | FLUSH { $$ = PF_FLUSH; } 4162 | FLUSH GLOBAL { 4163 $$ = PF_FLUSH | PF_FLUSH_GLOBAL; 4164 } 4165 ; 4166 4167 state_opt_spec : '(' state_opt_list ')' { $$ = $2; } 4168 | /* empty */ { $$ = NULL; } 4169 ; 4170 4171 state_opt_list : state_opt_item { $$ = $1; } 4172 | state_opt_list comma state_opt_item { 4173 $1->tail->next = $3; 4174 $1->tail = $3; 4175 $$ = $1; 4176 } 4177 ; 4178 4179 state_opt_item : MAXIMUM NUMBER { 4180 if ($2 < 0 || $2 > UINT_MAX) { 4181 yyerror("only positive values permitted"); 4182 YYERROR; 4183 } 4184 $$ = calloc(1, sizeof(struct node_state_opt)); 4185 if ($$ == NULL) 4186 err(1, "state_opt_item: calloc"); 4187 $$->type = PF_STATE_OPT_MAX; 4188 $$->data.max_states = $2; 4189 $$->next = NULL; 4190 $$->tail = $$; 4191 } 4192 | NOSYNC { 4193 $$ = calloc(1, sizeof(struct node_state_opt)); 4194 if ($$ == NULL) 4195 err(1, "state_opt_item: calloc"); 4196 $$->type = PF_STATE_OPT_NOSYNC; 4197 $$->next = NULL; 4198 $$->tail = $$; 4199 } 4200 | MAXSRCSTATES NUMBER { 4201 if ($2 < 0 || $2 > UINT_MAX) { 4202 yyerror("only positive values permitted"); 4203 YYERROR; 4204 } 4205 $$ = calloc(1, sizeof(struct node_state_opt)); 4206 if ($$ == NULL) 4207 err(1, "state_opt_item: calloc"); 4208 $$->type = PF_STATE_OPT_MAX_SRC_STATES; 4209 $$->data.max_src_states = $2; 4210 $$->next = NULL; 4211 $$->tail = $$; 4212 } 4213 | MAXSRCCONN NUMBER { 4214 if ($2 < 0 || $2 > UINT_MAX) { 4215 yyerror("only positive values permitted"); 4216 YYERROR; 4217 } 4218 $$ = calloc(1, sizeof(struct node_state_opt)); 4219 if ($$ == NULL) 4220 err(1, "state_opt_item: calloc"); 4221 $$->type = PF_STATE_OPT_MAX_SRC_CONN; 4222 $$->data.max_src_conn = $2; 4223 $$->next = NULL; 4224 $$->tail = $$; 4225 } 4226 | MAXSRCCONNRATE NUMBER '/' NUMBER { 4227 if ($2 < 0 || $2 > UINT_MAX || 4228 $4 < 0 || $4 > UINT_MAX) { 4229 yyerror("only positive values permitted"); 4230 YYERROR; 4231 } 4232 $$ = calloc(1, sizeof(struct node_state_opt)); 4233 if ($$ == NULL) 4234 err(1, "state_opt_item: calloc"); 4235 $$->type = PF_STATE_OPT_MAX_SRC_CONN_RATE; 4236 $$->data.max_src_conn_rate.limit = $2; 4237 $$->data.max_src_conn_rate.seconds = $4; 4238 $$->next = NULL; 4239 $$->tail = $$; 4240 } 4241 | OVERLOAD '<' STRING '>' flush { 4242 if (strlen($3) >= PF_TABLE_NAME_SIZE) { 4243 yyerror("table name '%s' too long", $3); 4244 free($3); 4245 YYERROR; 4246 } 4247 $$ = calloc(1, sizeof(struct node_state_opt)); 4248 if ($$ == NULL) 4249 err(1, "state_opt_item: calloc"); 4250 if (strlcpy($$->data.overload.tblname, $3, 4251 PF_TABLE_NAME_SIZE) >= PF_TABLE_NAME_SIZE) 4252 errx(1, "state_opt_item: strlcpy"); 4253 free($3); 4254 $$->type = PF_STATE_OPT_OVERLOAD; 4255 $$->data.overload.flush = $5; 4256 $$->next = NULL; 4257 $$->tail = $$; 4258 } 4259 | MAXSRCNODES NUMBER { 4260 if ($2 < 0 || $2 > UINT_MAX) { 4261 yyerror("only positive values permitted"); 4262 YYERROR; 4263 } 4264 $$ = calloc(1, sizeof(struct node_state_opt)); 4265 if ($$ == NULL) 4266 err(1, "state_opt_item: calloc"); 4267 $$->type = PF_STATE_OPT_MAX_SRC_NODES; 4268 $$->data.max_src_nodes = $2; 4269 $$->next = NULL; 4270 $$->tail = $$; 4271 } 4272 | sourcetrack { 4273 $$ = calloc(1, sizeof(struct node_state_opt)); 4274 if ($$ == NULL) 4275 err(1, "state_opt_item: calloc"); 4276 $$->type = PF_STATE_OPT_SRCTRACK; 4277 $$->data.src_track = $1; 4278 $$->next = NULL; 4279 $$->tail = $$; 4280 } 4281 | statelock { 4282 $$ = calloc(1, sizeof(struct node_state_opt)); 4283 if ($$ == NULL) 4284 err(1, "state_opt_item: calloc"); 4285 $$->type = PF_STATE_OPT_STATELOCK; 4286 $$->data.statelock = $1; 4287 $$->next = NULL; 4288 $$->tail = $$; 4289 } 4290 | SLOPPY { 4291 $$ = calloc(1, sizeof(struct node_state_opt)); 4292 if ($$ == NULL) 4293 err(1, "state_opt_item: calloc"); 4294 $$->type = PF_STATE_OPT_SLOPPY; 4295 $$->next = NULL; 4296 $$->tail = $$; 4297 } 4298 | STRING NUMBER { 4299 int i; 4300 4301 if ($2 < 0 || $2 > UINT_MAX) { 4302 yyerror("only positive values permitted"); 4303 YYERROR; 4304 } 4305 for (i = 0; pf_timeouts[i].name && 4306 strcmp(pf_timeouts[i].name, $1); ++i) 4307 ; /* nothing */ 4308 if (!pf_timeouts[i].name) { 4309 yyerror("illegal timeout name %s", $1); 4310 free($1); 4311 YYERROR; 4312 } 4313 if (strchr(pf_timeouts[i].name, '.') == NULL) { 4314 yyerror("illegal state timeout %s", $1); 4315 free($1); 4316 YYERROR; 4317 } 4318 free($1); 4319 $$ = calloc(1, sizeof(struct node_state_opt)); 4320 if ($$ == NULL) 4321 err(1, "state_opt_item: calloc"); 4322 $$->type = PF_STATE_OPT_TIMEOUT; 4323 $$->data.timeout.number = pf_timeouts[i].timeout; 4324 $$->data.timeout.seconds = $2; 4325 $$->next = NULL; 4326 $$->tail = $$; 4327 } 4328 ; 4329 4330 label : LABEL STRING { 4331 $$ = $2; 4332 } 4333 ; 4334 4335 etherqname : QUEUE STRING { 4336 $$.qname = $2; 4337 } 4338 | QUEUE '(' STRING ')' { 4339 $$.qname = $3; 4340 } 4341 ; 4342 4343 qname : QUEUE STRING { 4344 $$.qname = $2; 4345 $$.pqname = NULL; 4346 } 4347 | QUEUE '(' STRING ')' { 4348 $$.qname = $3; 4349 $$.pqname = NULL; 4350 } 4351 | QUEUE '(' STRING comma STRING ')' { 4352 $$.qname = $3; 4353 $$.pqname = $5; 4354 } 4355 ; 4356 4357 no : /* empty */ { $$ = 0; } 4358 | NO { $$ = 1; } 4359 ; 4360 4361 portstar : numberstring { 4362 if (parseport($1, &$$, PPORT_RANGE|PPORT_STAR) == -1) { 4363 free($1); 4364 YYERROR; 4365 } 4366 free($1); 4367 } 4368 ; 4369 4370 redirspec : host { $$ = $1; } 4371 | '{' optnl redir_host_list '}' { $$ = $3; } 4372 ; 4373 4374 redir_host_list : host optnl { $$ = $1; } 4375 | redir_host_list comma host optnl { 4376 $1->tail->next = $3; 4377 $1->tail = $3->tail; 4378 $$ = $1; 4379 } 4380 ; 4381 4382 redirpool : /* empty */ { $$ = NULL; } 4383 | ARROW redirspec { 4384 $$ = calloc(1, sizeof(struct redirection)); 4385 if ($$ == NULL) 4386 err(1, "redirection: calloc"); 4387 $$->host = $2; 4388 $$->rport.a = $$->rport.b = $$->rport.t = 0; 4389 } 4390 | ARROW redirspec PORT portstar { 4391 $$ = calloc(1, sizeof(struct redirection)); 4392 if ($$ == NULL) 4393 err(1, "redirection: calloc"); 4394 $$->host = $2; 4395 $$->rport = $4; 4396 } 4397 ; 4398 4399 hashkey : /* empty */ 4400 { 4401 $$ = calloc(1, sizeof(struct pf_poolhashkey)); 4402 if ($$ == NULL) 4403 err(1, "hashkey: calloc"); 4404 $$->key32[0] = arc4random(); 4405 $$->key32[1] = arc4random(); 4406 $$->key32[2] = arc4random(); 4407 $$->key32[3] = arc4random(); 4408 } 4409 | string 4410 { 4411 if (!strncmp($1, "0x", 2)) { 4412 if (strlen($1) != 34) { 4413 free($1); 4414 yyerror("hex key must be 128 bits " 4415 "(32 hex digits) long"); 4416 YYERROR; 4417 } 4418 $$ = calloc(1, sizeof(struct pf_poolhashkey)); 4419 if ($$ == NULL) 4420 err(1, "hashkey: calloc"); 4421 4422 if (sscanf($1, "0x%8x%8x%8x%8x", 4423 &$$->key32[0], &$$->key32[1], 4424 &$$->key32[2], &$$->key32[3]) != 4) { 4425 free($$); 4426 free($1); 4427 yyerror("invalid hex key"); 4428 YYERROR; 4429 } 4430 } else { 4431 MD5_CTX context; 4432 4433 $$ = calloc(1, sizeof(struct pf_poolhashkey)); 4434 if ($$ == NULL) 4435 err(1, "hashkey: calloc"); 4436 MD5Init(&context); 4437 MD5Update(&context, (unsigned char *)$1, 4438 strlen($1)); 4439 MD5Final((unsigned char *)$$, &context); 4440 HTONL($$->key32[0]); 4441 HTONL($$->key32[1]); 4442 HTONL($$->key32[2]); 4443 HTONL($$->key32[3]); 4444 } 4445 free($1); 4446 } 4447 ; 4448 4449 pool_opts : { bzero(&pool_opts, sizeof pool_opts); } 4450 pool_opts_l 4451 { $$ = pool_opts; } 4452 | /* empty */ { 4453 bzero(&pool_opts, sizeof pool_opts); 4454 $$ = pool_opts; 4455 } 4456 ; 4457 4458 pool_opts_l : pool_opts_l pool_opt 4459 | pool_opt 4460 ; 4461 4462 pool_opt : BITMASK { 4463 if (pool_opts.type) { 4464 yyerror("pool type cannot be redefined"); 4465 YYERROR; 4466 } 4467 pool_opts.type = PF_POOL_BITMASK; 4468 } 4469 | RANDOM { 4470 if (pool_opts.type) { 4471 yyerror("pool type cannot be redefined"); 4472 YYERROR; 4473 } 4474 pool_opts.type = PF_POOL_RANDOM; 4475 } 4476 | SOURCEHASH hashkey { 4477 if (pool_opts.type) { 4478 yyerror("pool type cannot be redefined"); 4479 YYERROR; 4480 } 4481 pool_opts.type = PF_POOL_SRCHASH; 4482 pool_opts.key = $2; 4483 } 4484 | ROUNDROBIN { 4485 if (pool_opts.type) { 4486 yyerror("pool type cannot be redefined"); 4487 YYERROR; 4488 } 4489 pool_opts.type = PF_POOL_ROUNDROBIN; 4490 } 4491 | STATICPORT { 4492 if (pool_opts.staticport) { 4493 yyerror("static-port cannot be redefined"); 4494 YYERROR; 4495 } 4496 pool_opts.staticport = 1; 4497 } 4498 | STICKYADDRESS { 4499 if (pool_opts.marker & POM_STICKYADDRESS) { 4500 yyerror("sticky-address cannot be redefined"); 4501 YYERROR; 4502 } 4503 pool_opts.marker |= POM_STICKYADDRESS; 4504 pool_opts.opts |= PF_POOL_STICKYADDR; 4505 } 4506 | MAPEPORTSET number '/' number '/' number { 4507 if (pool_opts.mape.offset) { 4508 yyerror("map-e-portset cannot be redefined"); 4509 YYERROR; 4510 } 4511 if (pool_opts.type) { 4512 yyerror("map-e-portset cannot be used with " 4513 "address pools"); 4514 YYERROR; 4515 } 4516 if ($2 <= 0 || $2 >= 16) { 4517 yyerror("MAP-E PSID offset must be 1-15"); 4518 YYERROR; 4519 } 4520 if ($4 < 0 || $4 >= 16 || $2 + $4 > 16) { 4521 yyerror("Invalid MAP-E PSID length"); 4522 YYERROR; 4523 } else if ($4 == 0) { 4524 yyerror("PSID Length = 0: this means" 4525 " you do not need MAP-E"); 4526 YYERROR; 4527 } 4528 if ($6 < 0 || $6 > 65535) { 4529 yyerror("Invalid MAP-E PSID"); 4530 YYERROR; 4531 } 4532 pool_opts.mape.offset = $2; 4533 pool_opts.mape.psidlen = $4; 4534 pool_opts.mape.psid = $6; 4535 } 4536 ; 4537 4538 redirection : /* empty */ { $$ = NULL; } 4539 | ARROW host { 4540 $$ = calloc(1, sizeof(struct redirection)); 4541 if ($$ == NULL) 4542 err(1, "redirection: calloc"); 4543 $$->host = $2; 4544 $$->rport.a = $$->rport.b = $$->rport.t = 0; 4545 } 4546 | ARROW host PORT portstar { 4547 $$ = calloc(1, sizeof(struct redirection)); 4548 if ($$ == NULL) 4549 err(1, "redirection: calloc"); 4550 $$->host = $2; 4551 $$->rport = $4; 4552 } 4553 ; 4554 4555 natpasslog : /* empty */ { $$.b1 = $$.b2 = 0; $$.w2 = 0; } 4556 | PASS { $$.b1 = 1; $$.b2 = 0; $$.w2 = 0; } 4557 | PASS log { $$.b1 = 1; $$.b2 = $2.log; $$.w2 = $2.logif; } 4558 | log { $$.b1 = 0; $$.b2 = $1.log; $$.w2 = $1.logif; } 4559 ; 4560 4561 nataction : no NAT natpasslog { 4562 if ($1 && $3.b1) { 4563 yyerror("\"pass\" not valid with \"no\""); 4564 YYERROR; 4565 } 4566 if ($1) 4567 $$.b1 = PF_NONAT; 4568 else 4569 $$.b1 = PF_NAT; 4570 $$.b2 = $3.b1; 4571 $$.w = $3.b2; 4572 $$.w2 = $3.w2; 4573 } 4574 | no RDR natpasslog { 4575 if ($1 && $3.b1) { 4576 yyerror("\"pass\" not valid with \"no\""); 4577 YYERROR; 4578 } 4579 if ($1) 4580 $$.b1 = PF_NORDR; 4581 else 4582 $$.b1 = PF_RDR; 4583 $$.b2 = $3.b1; 4584 $$.w = $3.b2; 4585 $$.w2 = $3.w2; 4586 } 4587 ; 4588 4589 natrule : nataction interface af proto fromto tag tagged rtable 4590 redirpool pool_opts 4591 { 4592 struct pfctl_rule r; 4593 4594 if (check_rulestate(PFCTL_STATE_NAT)) 4595 YYERROR; 4596 4597 memset(&r, 0, sizeof(r)); 4598 4599 r.action = $1.b1; 4600 r.natpass = $1.b2; 4601 r.log = $1.w; 4602 r.logif = $1.w2; 4603 r.af = $3; 4604 4605 if (!r.af) { 4606 if ($5.src.host && $5.src.host->af && 4607 !$5.src.host->ifindex) 4608 r.af = $5.src.host->af; 4609 else if ($5.dst.host && $5.dst.host->af && 4610 !$5.dst.host->ifindex) 4611 r.af = $5.dst.host->af; 4612 } 4613 4614 if ($6 != NULL) 4615 if (strlcpy(r.tagname, $6, PF_TAG_NAME_SIZE) >= 4616 PF_TAG_NAME_SIZE) { 4617 yyerror("tag too long, max %u chars", 4618 PF_TAG_NAME_SIZE - 1); 4619 YYERROR; 4620 } 4621 4622 if ($7.name) 4623 if (strlcpy(r.match_tagname, $7.name, 4624 PF_TAG_NAME_SIZE) >= PF_TAG_NAME_SIZE) { 4625 yyerror("tag too long, max %u chars", 4626 PF_TAG_NAME_SIZE - 1); 4627 YYERROR; 4628 } 4629 r.match_tag_not = $7.neg; 4630 r.rtableid = $8; 4631 4632 if (r.action == PF_NONAT || r.action == PF_NORDR) { 4633 if ($9 != NULL) { 4634 yyerror("translation rule with 'no' " 4635 "does not need '->'"); 4636 YYERROR; 4637 } 4638 } else { 4639 if ($9 == NULL || $9->host == NULL) { 4640 yyerror("translation rule requires '-> " 4641 "address'"); 4642 YYERROR; 4643 } 4644 if (!r.af && ! $9->host->ifindex) 4645 r.af = $9->host->af; 4646 4647 remove_invalid_hosts(&$9->host, &r.af); 4648 if (invalid_redirect($9->host, r.af)) 4649 YYERROR; 4650 if (check_netmask($9->host, r.af)) 4651 YYERROR; 4652 4653 r.rpool.proxy_port[0] = ntohs($9->rport.a); 4654 4655 switch (r.action) { 4656 case PF_RDR: 4657 if (!$9->rport.b && $9->rport.t && 4658 $5.dst.port != NULL) { 4659 r.rpool.proxy_port[1] = 4660 ntohs($9->rport.a) + 4661 (ntohs( 4662 $5.dst.port->port[1]) - 4663 ntohs( 4664 $5.dst.port->port[0])); 4665 } else 4666 r.rpool.proxy_port[1] = 4667 ntohs($9->rport.b); 4668 break; 4669 case PF_NAT: 4670 r.rpool.proxy_port[1] = 4671 ntohs($9->rport.b); 4672 if (!r.rpool.proxy_port[0] && 4673 !r.rpool.proxy_port[1]) { 4674 r.rpool.proxy_port[0] = 4675 PF_NAT_PROXY_PORT_LOW; 4676 r.rpool.proxy_port[1] = 4677 PF_NAT_PROXY_PORT_HIGH; 4678 } else if (!r.rpool.proxy_port[1]) 4679 r.rpool.proxy_port[1] = 4680 r.rpool.proxy_port[0]; 4681 break; 4682 default: 4683 break; 4684 } 4685 4686 r.rpool.opts = $10.type; 4687 if ((r.rpool.opts & PF_POOL_TYPEMASK) == 4688 PF_POOL_NONE && ($9->host->next != NULL || 4689 $9->host->addr.type == PF_ADDR_TABLE || 4690 DYNIF_MULTIADDR($9->host->addr))) 4691 r.rpool.opts = PF_POOL_ROUNDROBIN; 4692 if ((r.rpool.opts & PF_POOL_TYPEMASK) != 4693 PF_POOL_ROUNDROBIN && 4694 disallow_table($9->host, "tables are only " 4695 "supported in round-robin redirection " 4696 "pools")) 4697 YYERROR; 4698 if ((r.rpool.opts & PF_POOL_TYPEMASK) != 4699 PF_POOL_ROUNDROBIN && 4700 disallow_alias($9->host, "interface (%s) " 4701 "is only supported in round-robin " 4702 "redirection pools")) 4703 YYERROR; 4704 if ($9->host->next != NULL) { 4705 if ((r.rpool.opts & PF_POOL_TYPEMASK) != 4706 PF_POOL_ROUNDROBIN) { 4707 yyerror("only round-robin " 4708 "valid for multiple " 4709 "redirection addresses"); 4710 YYERROR; 4711 } 4712 } 4713 } 4714 4715 if ($10.key != NULL) 4716 memcpy(&r.rpool.key, $10.key, 4717 sizeof(struct pf_poolhashkey)); 4718 4719 if ($10.opts) 4720 r.rpool.opts |= $10.opts; 4721 4722 if ($10.staticport) { 4723 if (r.action != PF_NAT) { 4724 yyerror("the 'static-port' option is " 4725 "only valid with nat rules"); 4726 YYERROR; 4727 } 4728 if (r.rpool.proxy_port[0] != 4729 PF_NAT_PROXY_PORT_LOW && 4730 r.rpool.proxy_port[1] != 4731 PF_NAT_PROXY_PORT_HIGH) { 4732 yyerror("the 'static-port' option can't" 4733 " be used when specifying a port" 4734 " range"); 4735 YYERROR; 4736 } 4737 r.rpool.proxy_port[0] = 0; 4738 r.rpool.proxy_port[1] = 0; 4739 } 4740 4741 if ($10.mape.offset) { 4742 if (r.action != PF_NAT) { 4743 yyerror("the 'map-e-portset' option is" 4744 " only valid with nat rules"); 4745 YYERROR; 4746 } 4747 if ($10.staticport) { 4748 yyerror("the 'map-e-portset' option" 4749 " can't be used 'static-port'"); 4750 YYERROR; 4751 } 4752 if (r.rpool.proxy_port[0] != 4753 PF_NAT_PROXY_PORT_LOW && 4754 r.rpool.proxy_port[1] != 4755 PF_NAT_PROXY_PORT_HIGH) { 4756 yyerror("the 'map-e-portset' option" 4757 " can't be used when specifying" 4758 " a port range"); 4759 YYERROR; 4760 } 4761 r.rpool.mape = $10.mape; 4762 } 4763 4764 expand_rule(&r, $2, $9 == NULL ? NULL : $9->host, $4, 4765 $5.src_os, $5.src.host, $5.src.port, $5.dst.host, 4766 $5.dst.port, 0, 0, 0, ""); 4767 free($9); 4768 } 4769 ; 4770 4771 binatrule : no BINAT natpasslog interface af proto FROM ipspec toipspec tag 4772 tagged rtable redirection 4773 { 4774 struct pfctl_rule binat; 4775 struct pf_pooladdr *pa; 4776 4777 if (check_rulestate(PFCTL_STATE_NAT)) 4778 YYERROR; 4779 if (disallow_urpf_failed($9, "\"urpf-failed\" is not " 4780 "permitted as a binat destination")) 4781 YYERROR; 4782 4783 memset(&binat, 0, sizeof(binat)); 4784 4785 if ($1 && $3.b1) { 4786 yyerror("\"pass\" not valid with \"no\""); 4787 YYERROR; 4788 } 4789 if ($1) 4790 binat.action = PF_NOBINAT; 4791 else 4792 binat.action = PF_BINAT; 4793 binat.natpass = $3.b1; 4794 binat.log = $3.b2; 4795 binat.logif = $3.w2; 4796 binat.af = $5; 4797 if (!binat.af && $8 != NULL && $8->af) 4798 binat.af = $8->af; 4799 if (!binat.af && $9 != NULL && $9->af) 4800 binat.af = $9->af; 4801 4802 if (!binat.af && $13 != NULL && $13->host) 4803 binat.af = $13->host->af; 4804 if (!binat.af) { 4805 yyerror("address family (inet/inet6) " 4806 "undefined"); 4807 YYERROR; 4808 } 4809 4810 if ($4 != NULL) { 4811 memcpy(binat.ifname, $4->ifname, 4812 sizeof(binat.ifname)); 4813 binat.ifnot = $4->not; 4814 free($4); 4815 } 4816 4817 if ($10 != NULL) 4818 if (strlcpy(binat.tagname, $10, 4819 PF_TAG_NAME_SIZE) >= PF_TAG_NAME_SIZE) { 4820 yyerror("tag too long, max %u chars", 4821 PF_TAG_NAME_SIZE - 1); 4822 YYERROR; 4823 } 4824 if ($11.name) 4825 if (strlcpy(binat.match_tagname, $11.name, 4826 PF_TAG_NAME_SIZE) >= PF_TAG_NAME_SIZE) { 4827 yyerror("tag too long, max %u chars", 4828 PF_TAG_NAME_SIZE - 1); 4829 YYERROR; 4830 } 4831 binat.match_tag_not = $11.neg; 4832 binat.rtableid = $12; 4833 4834 if ($6 != NULL) { 4835 binat.proto = $6->proto; 4836 free($6); 4837 } 4838 4839 if ($8 != NULL && disallow_table($8, "invalid use of " 4840 "table <%s> as the source address of a binat rule")) 4841 YYERROR; 4842 if ($8 != NULL && disallow_alias($8, "invalid use of " 4843 "interface (%s) as the source address of a binat " 4844 "rule")) 4845 YYERROR; 4846 if ($13 != NULL && $13->host != NULL && disallow_table( 4847 $13->host, "invalid use of table <%s> as the " 4848 "redirect address of a binat rule")) 4849 YYERROR; 4850 if ($13 != NULL && $13->host != NULL && disallow_alias( 4851 $13->host, "invalid use of interface (%s) as the " 4852 "redirect address of a binat rule")) 4853 YYERROR; 4854 4855 if ($8 != NULL) { 4856 if ($8->next) { 4857 yyerror("multiple binat ip addresses"); 4858 YYERROR; 4859 } 4860 if ($8->addr.type == PF_ADDR_DYNIFTL) 4861 $8->af = binat.af; 4862 if ($8->af != binat.af) { 4863 yyerror("binat ip versions must match"); 4864 YYERROR; 4865 } 4866 if (check_netmask($8, binat.af)) 4867 YYERROR; 4868 memcpy(&binat.src.addr, &$8->addr, 4869 sizeof(binat.src.addr)); 4870 free($8); 4871 } 4872 if ($9 != NULL) { 4873 if ($9->next) { 4874 yyerror("multiple binat ip addresses"); 4875 YYERROR; 4876 } 4877 if ($9->af != binat.af && $9->af) { 4878 yyerror("binat ip versions must match"); 4879 YYERROR; 4880 } 4881 if (check_netmask($9, binat.af)) 4882 YYERROR; 4883 memcpy(&binat.dst.addr, &$9->addr, 4884 sizeof(binat.dst.addr)); 4885 binat.dst.neg = $9->not; 4886 free($9); 4887 } 4888 4889 if (binat.action == PF_NOBINAT) { 4890 if ($13 != NULL) { 4891 yyerror("'no binat' rule does not need" 4892 " '->'"); 4893 YYERROR; 4894 } 4895 } else { 4896 if ($13 == NULL || $13->host == NULL) { 4897 yyerror("'binat' rule requires" 4898 " '-> address'"); 4899 YYERROR; 4900 } 4901 4902 remove_invalid_hosts(&$13->host, &binat.af); 4903 if (invalid_redirect($13->host, binat.af)) 4904 YYERROR; 4905 if ($13->host->next != NULL) { 4906 yyerror("binat rule must redirect to " 4907 "a single address"); 4908 YYERROR; 4909 } 4910 if (check_netmask($13->host, binat.af)) 4911 YYERROR; 4912 4913 if (!PF_AZERO(&binat.src.addr.v.a.mask, 4914 binat.af) && 4915 !PF_AEQ(&binat.src.addr.v.a.mask, 4916 &$13->host->addr.v.a.mask, binat.af)) { 4917 yyerror("'binat' source mask and " 4918 "redirect mask must be the same"); 4919 YYERROR; 4920 } 4921 4922 TAILQ_INIT(&binat.rpool.list); 4923 pa = calloc(1, sizeof(struct pf_pooladdr)); 4924 if (pa == NULL) 4925 err(1, "binat: calloc"); 4926 pa->addr = $13->host->addr; 4927 pa->ifname[0] = 0; 4928 TAILQ_INSERT_TAIL(&binat.rpool.list, 4929 pa, entries); 4930 4931 free($13); 4932 } 4933 4934 pfctl_append_rule(pf, &binat, ""); 4935 } 4936 ; 4937 4938 tag : /* empty */ { $$ = NULL; } 4939 | TAG STRING { $$ = $2; } 4940 ; 4941 4942 tagged : /* empty */ { $$.neg = 0; $$.name = NULL; } 4943 | not TAGGED string { $$.neg = $1; $$.name = $3; } 4944 ; 4945 4946 rtable : /* empty */ { $$ = -1; } 4947 | RTABLE NUMBER { 4948 if ($2 < 0 || $2 > rt_tableid_max()) { 4949 yyerror("invalid rtable id"); 4950 YYERROR; 4951 } 4952 $$ = $2; 4953 } 4954 ; 4955 4956 route_host : STRING { 4957 $$ = calloc(1, sizeof(struct node_host)); 4958 if ($$ == NULL) 4959 err(1, "route_host: calloc"); 4960 if (strlen($1) >= IFNAMSIZ) { 4961 yyerror("interface name too long"); 4962 YYERROR; 4963 } 4964 $$->ifname = strdup($1); 4965 set_ipmask($$, 128); 4966 $$->next = NULL; 4967 $$->tail = $$; 4968 } 4969 | '(' STRING host ')' { 4970 struct node_host *n; 4971 4972 $$ = $3; 4973 for (n = $3; n != NULL; n = n->next) { 4974 if (strlen($2) >= IFNAMSIZ) { 4975 yyerror("interface name too long"); 4976 YYERROR; 4977 } 4978 n->ifname = strdup($2); 4979 } 4980 } 4981 ; 4982 4983 route_host_list : route_host optnl { $$ = $1; } 4984 | route_host_list comma route_host optnl { 4985 if ($1->af == 0) 4986 $1->af = $3->af; 4987 if ($1->af != $3->af) { 4988 yyerror("all pool addresses must be in the " 4989 "same address family"); 4990 YYERROR; 4991 } 4992 $1->tail->next = $3; 4993 $1->tail = $3->tail; 4994 $$ = $1; 4995 } 4996 ; 4997 4998 routespec : route_host { $$ = $1; } 4999 | '{' optnl route_host_list '}' { $$ = $3; } 5000 ; 5001 5002 route : /* empty */ { 5003 $$.host = NULL; 5004 $$.rt = 0; 5005 $$.pool_opts = 0; 5006 } 5007 | FASTROUTE { 5008 /* backwards-compat */ 5009 $$.host = NULL; 5010 $$.rt = 0; 5011 $$.pool_opts = 0; 5012 } 5013 | ROUTETO routespec pool_opts { 5014 $$.host = $2; 5015 $$.rt = PF_ROUTETO; 5016 $$.pool_opts = $3.type | $3.opts; 5017 if ($3.key != NULL) 5018 $$.key = $3.key; 5019 } 5020 | REPLYTO routespec pool_opts { 5021 $$.host = $2; 5022 $$.rt = PF_REPLYTO; 5023 $$.pool_opts = $3.type | $3.opts; 5024 if ($3.key != NULL) 5025 $$.key = $3.key; 5026 } 5027 | DUPTO routespec pool_opts { 5028 $$.host = $2; 5029 $$.rt = PF_DUPTO; 5030 $$.pool_opts = $3.type | $3.opts; 5031 if ($3.key != NULL) 5032 $$.key = $3.key; 5033 } 5034 ; 5035 5036 timeout_spec : STRING NUMBER 5037 { 5038 if (check_rulestate(PFCTL_STATE_OPTION)) { 5039 free($1); 5040 YYERROR; 5041 } 5042 if ($2 < 0 || $2 > UINT_MAX) { 5043 yyerror("only positive values permitted"); 5044 YYERROR; 5045 } 5046 if (pfctl_set_timeout(pf, $1, $2, 0) != 0) { 5047 yyerror("unknown timeout %s", $1); 5048 free($1); 5049 YYERROR; 5050 } 5051 free($1); 5052 } 5053 | INTERVAL NUMBER { 5054 if (check_rulestate(PFCTL_STATE_OPTION)) 5055 YYERROR; 5056 if ($2 < 0 || $2 > UINT_MAX) { 5057 yyerror("only positive values permitted"); 5058 YYERROR; 5059 } 5060 if (pfctl_set_timeout(pf, "interval", $2, 0) != 0) 5061 YYERROR; 5062 } 5063 ; 5064 5065 timeout_list : timeout_list comma timeout_spec optnl 5066 | timeout_spec optnl 5067 ; 5068 5069 limit_spec : STRING NUMBER 5070 { 5071 if (check_rulestate(PFCTL_STATE_OPTION)) { 5072 free($1); 5073 YYERROR; 5074 } 5075 if ($2 < 0 || $2 > UINT_MAX) { 5076 yyerror("only positive values permitted"); 5077 YYERROR; 5078 } 5079 if (pfctl_set_limit(pf, $1, $2) != 0) { 5080 yyerror("unable to set limit %s %u", $1, $2); 5081 free($1); 5082 YYERROR; 5083 } 5084 free($1); 5085 } 5086 ; 5087 5088 limit_list : limit_list comma limit_spec optnl 5089 | limit_spec optnl 5090 ; 5091 5092 comma : ',' 5093 | /* empty */ 5094 ; 5095 5096 yesno : NO { $$ = 0; } 5097 | STRING { 5098 if (!strcmp($1, "yes")) 5099 $$ = 1; 5100 else { 5101 yyerror("invalid value '%s', expected 'yes' " 5102 "or 'no'", $1); 5103 free($1); 5104 YYERROR; 5105 } 5106 free($1); 5107 } 5108 ; 5109 5110 unaryop : '=' { $$ = PF_OP_EQ; } 5111 | '!' '=' { $$ = PF_OP_NE; } 5112 | '<' '=' { $$ = PF_OP_LE; } 5113 | '<' { $$ = PF_OP_LT; } 5114 | '>' '=' { $$ = PF_OP_GE; } 5115 | '>' { $$ = PF_OP_GT; } 5116 ; 5117 5118 %% 5119 5120 int 5121 yyerror(const char *fmt, ...) 5122 { 5123 va_list ap; 5124 5125 file->errors++; 5126 va_start(ap, fmt); 5127 fprintf(stderr, "%s:%d: ", file->name, yylval.lineno); 5128 vfprintf(stderr, fmt, ap); 5129 fprintf(stderr, "\n"); 5130 va_end(ap); 5131 return (0); 5132 } 5133 5134 int 5135 disallow_table(struct node_host *h, const char *fmt) 5136 { 5137 for (; h != NULL; h = h->next) 5138 if (h->addr.type == PF_ADDR_TABLE) { 5139 yyerror(fmt, h->addr.v.tblname); 5140 return (1); 5141 } 5142 return (0); 5143 } 5144 5145 int 5146 disallow_urpf_failed(struct node_host *h, const char *fmt) 5147 { 5148 for (; h != NULL; h = h->next) 5149 if (h->addr.type == PF_ADDR_URPFFAILED) { 5150 yyerror(fmt); 5151 return (1); 5152 } 5153 return (0); 5154 } 5155 5156 int 5157 disallow_alias(struct node_host *h, const char *fmt) 5158 { 5159 for (; h != NULL; h = h->next) 5160 if (DYNIF_MULTIADDR(h->addr)) { 5161 yyerror(fmt, h->addr.v.tblname); 5162 return (1); 5163 } 5164 return (0); 5165 } 5166 5167 int 5168 rule_consistent(struct pfctl_rule *r, int anchor_call) 5169 { 5170 int problems = 0; 5171 5172 switch (r->action) { 5173 case PF_PASS: 5174 case PF_DROP: 5175 case PF_SCRUB: 5176 case PF_NOSCRUB: 5177 problems = filter_consistent(r, anchor_call); 5178 break; 5179 case PF_NAT: 5180 case PF_NONAT: 5181 problems = nat_consistent(r); 5182 break; 5183 case PF_RDR: 5184 case PF_NORDR: 5185 problems = rdr_consistent(r); 5186 break; 5187 case PF_BINAT: 5188 case PF_NOBINAT: 5189 default: 5190 break; 5191 } 5192 return (problems); 5193 } 5194 5195 int 5196 filter_consistent(struct pfctl_rule *r, int anchor_call) 5197 { 5198 int problems = 0; 5199 5200 if (r->proto != IPPROTO_TCP && r->proto != IPPROTO_UDP && 5201 (r->src.port_op || r->dst.port_op)) { 5202 yyerror("port only applies to tcp/udp"); 5203 problems++; 5204 } 5205 if (r->proto != IPPROTO_ICMP && r->proto != IPPROTO_ICMPV6 && 5206 (r->type || r->code)) { 5207 yyerror("icmp-type/code only applies to icmp"); 5208 problems++; 5209 } 5210 if (!r->af && (r->type || r->code)) { 5211 yyerror("must indicate address family with icmp-type/code"); 5212 problems++; 5213 } 5214 if (r->overload_tblname[0] && 5215 r->max_src_conn == 0 && r->max_src_conn_rate.seconds == 0) { 5216 yyerror("'overload' requires 'max-src-conn' " 5217 "or 'max-src-conn-rate'"); 5218 problems++; 5219 } 5220 if ((r->proto == IPPROTO_ICMP && r->af == AF_INET6) || 5221 (r->proto == IPPROTO_ICMPV6 && r->af == AF_INET)) { 5222 yyerror("proto %s doesn't match address family %s", 5223 r->proto == IPPROTO_ICMP ? "icmp" : "icmp6", 5224 r->af == AF_INET ? "inet" : "inet6"); 5225 problems++; 5226 } 5227 if (r->allow_opts && r->action != PF_PASS) { 5228 yyerror("allow-opts can only be specified for pass rules"); 5229 problems++; 5230 } 5231 if (r->rule_flag & PFRULE_FRAGMENT && (r->src.port_op || 5232 r->dst.port_op || r->flagset || r->type || r->code)) { 5233 yyerror("fragments can be filtered only on IP header fields"); 5234 problems++; 5235 } 5236 if (r->rule_flag & PFRULE_RETURNRST && r->proto != IPPROTO_TCP) { 5237 yyerror("return-rst can only be applied to TCP rules"); 5238 problems++; 5239 } 5240 if (r->max_src_nodes && !(r->rule_flag & PFRULE_RULESRCTRACK)) { 5241 yyerror("max-src-nodes requires 'source-track rule'"); 5242 problems++; 5243 } 5244 if (r->action == PF_DROP && r->keep_state) { 5245 yyerror("keep state on block rules doesn't make sense"); 5246 problems++; 5247 } 5248 if (r->rule_flag & PFRULE_STATESLOPPY && 5249 (r->keep_state == PF_STATE_MODULATE || 5250 r->keep_state == PF_STATE_SYNPROXY)) { 5251 yyerror("sloppy state matching cannot be used with " 5252 "synproxy state or modulate state"); 5253 problems++; 5254 } 5255 return (-problems); 5256 } 5257 5258 int 5259 nat_consistent(struct pfctl_rule *r) 5260 { 5261 return (0); /* yeah! */ 5262 } 5263 5264 int 5265 rdr_consistent(struct pfctl_rule *r) 5266 { 5267 int problems = 0; 5268 5269 if (r->proto != IPPROTO_TCP && r->proto != IPPROTO_UDP) { 5270 if (r->src.port_op) { 5271 yyerror("src port only applies to tcp/udp"); 5272 problems++; 5273 } 5274 if (r->dst.port_op) { 5275 yyerror("dst port only applies to tcp/udp"); 5276 problems++; 5277 } 5278 if (r->rpool.proxy_port[0]) { 5279 yyerror("rpool port only applies to tcp/udp"); 5280 problems++; 5281 } 5282 } 5283 if (r->dst.port_op && 5284 r->dst.port_op != PF_OP_EQ && r->dst.port_op != PF_OP_RRG) { 5285 yyerror("invalid port operator for rdr destination port"); 5286 problems++; 5287 } 5288 return (-problems); 5289 } 5290 5291 int 5292 process_tabledef(char *name, struct table_opts *opts) 5293 { 5294 struct pfr_buffer ab; 5295 struct node_tinit *ti; 5296 unsigned long maxcount; 5297 size_t s = sizeof(maxcount); 5298 5299 bzero(&ab, sizeof(ab)); 5300 ab.pfrb_type = PFRB_ADDRS; 5301 SIMPLEQ_FOREACH(ti, &opts->init_nodes, entries) { 5302 if (ti->file) 5303 if (pfr_buf_load(&ab, ti->file, 0, append_addr)) { 5304 if (errno) 5305 yyerror("cannot load \"%s\": %s", 5306 ti->file, strerror(errno)); 5307 else 5308 yyerror("file \"%s\" contains bad data", 5309 ti->file); 5310 goto _error; 5311 } 5312 if (ti->host) 5313 if (append_addr_host(&ab, ti->host, 0, 0)) { 5314 yyerror("cannot create address buffer: %s", 5315 strerror(errno)); 5316 goto _error; 5317 } 5318 } 5319 if (pf->opts & PF_OPT_VERBOSE) 5320 print_tabledef(name, opts->flags, opts->init_addr, 5321 &opts->init_nodes); 5322 if (!(pf->opts & PF_OPT_NOACTION) && 5323 pfctl_define_table(name, opts->flags, opts->init_addr, 5324 pf->anchor->name, &ab, pf->anchor->ruleset.tticket)) { 5325 5326 if (sysctlbyname("net.pf.request_maxcount", &maxcount, &s, 5327 NULL, 0) == -1) 5328 maxcount = 65535; 5329 5330 if (ab.pfrb_size > maxcount) 5331 yyerror("cannot define table %s: too many elements.\n" 5332 "Consider increasing net.pf.request_maxcount.", 5333 name); 5334 else 5335 yyerror("cannot define table %s: %s", name, 5336 pfr_strerror(errno)); 5337 5338 goto _error; 5339 } 5340 pf->tdirty = 1; 5341 pfr_buf_clear(&ab); 5342 return (0); 5343 _error: 5344 pfr_buf_clear(&ab); 5345 return (-1); 5346 } 5347 5348 struct keywords { 5349 const char *k_name; 5350 int k_val; 5351 }; 5352 5353 /* macro gore, but you should've seen the prior indentation nightmare... */ 5354 5355 #define FREE_LIST(T,r) \ 5356 do { \ 5357 T *p, *node = r; \ 5358 while (node != NULL) { \ 5359 p = node; \ 5360 node = node->next; \ 5361 free(p); \ 5362 } \ 5363 } while (0) 5364 5365 #define LOOP_THROUGH(T,n,r,C) \ 5366 do { \ 5367 T *n; \ 5368 if (r == NULL) { \ 5369 r = calloc(1, sizeof(T)); \ 5370 if (r == NULL) \ 5371 err(1, "LOOP: calloc"); \ 5372 r->next = NULL; \ 5373 } \ 5374 n = r; \ 5375 while (n != NULL) { \ 5376 do { \ 5377 C; \ 5378 } while (0); \ 5379 n = n->next; \ 5380 } \ 5381 } while (0) 5382 5383 void 5384 expand_label_str(char *label, size_t len, const char *srch, const char *repl) 5385 { 5386 char *tmp; 5387 char *p, *q; 5388 5389 if ((tmp = calloc(1, len)) == NULL) 5390 err(1, "expand_label_str: calloc"); 5391 p = q = label; 5392 while ((q = strstr(p, srch)) != NULL) { 5393 *q = '\0'; 5394 if ((strlcat(tmp, p, len) >= len) || 5395 (strlcat(tmp, repl, len) >= len)) 5396 errx(1, "expand_label: label too long"); 5397 q += strlen(srch); 5398 p = q; 5399 } 5400 if (strlcat(tmp, p, len) >= len) 5401 errx(1, "expand_label: label too long"); 5402 strlcpy(label, tmp, len); /* always fits */ 5403 free(tmp); 5404 } 5405 5406 void 5407 expand_label_if(const char *name, char *label, size_t len, const char *ifname) 5408 { 5409 if (strstr(label, name) != NULL) { 5410 if (!*ifname) 5411 expand_label_str(label, len, name, "any"); 5412 else 5413 expand_label_str(label, len, name, ifname); 5414 } 5415 } 5416 5417 void 5418 expand_label_addr(const char *name, char *label, size_t len, sa_family_t af, 5419 struct pf_rule_addr *addr) 5420 { 5421 char tmp[64], tmp_not[66]; 5422 5423 if (strstr(label, name) != NULL) { 5424 switch (addr->addr.type) { 5425 case PF_ADDR_DYNIFTL: 5426 snprintf(tmp, sizeof(tmp), "(%s)", addr->addr.v.ifname); 5427 break; 5428 case PF_ADDR_TABLE: 5429 snprintf(tmp, sizeof(tmp), "<%s>", addr->addr.v.tblname); 5430 break; 5431 case PF_ADDR_NOROUTE: 5432 snprintf(tmp, sizeof(tmp), "no-route"); 5433 break; 5434 case PF_ADDR_URPFFAILED: 5435 snprintf(tmp, sizeof(tmp), "urpf-failed"); 5436 break; 5437 case PF_ADDR_ADDRMASK: 5438 if (!af || (PF_AZERO(&addr->addr.v.a.addr, af) && 5439 PF_AZERO(&addr->addr.v.a.mask, af))) 5440 snprintf(tmp, sizeof(tmp), "any"); 5441 else { 5442 char a[48]; 5443 int bits; 5444 5445 if (inet_ntop(af, &addr->addr.v.a.addr, a, 5446 sizeof(a)) == NULL) 5447 snprintf(tmp, sizeof(tmp), "?"); 5448 else { 5449 bits = unmask(&addr->addr.v.a.mask, af); 5450 if ((af == AF_INET && bits < 32) || 5451 (af == AF_INET6 && bits < 128)) 5452 snprintf(tmp, sizeof(tmp), 5453 "%s/%d", a, bits); 5454 else 5455 snprintf(tmp, sizeof(tmp), 5456 "%s", a); 5457 } 5458 } 5459 break; 5460 default: 5461 snprintf(tmp, sizeof(tmp), "?"); 5462 break; 5463 } 5464 5465 if (addr->neg) { 5466 snprintf(tmp_not, sizeof(tmp_not), "! %s", tmp); 5467 expand_label_str(label, len, name, tmp_not); 5468 } else 5469 expand_label_str(label, len, name, tmp); 5470 } 5471 } 5472 5473 void 5474 expand_label_port(const char *name, char *label, size_t len, 5475 struct pf_rule_addr *addr) 5476 { 5477 char a1[6], a2[6], op[13] = ""; 5478 5479 if (strstr(label, name) != NULL) { 5480 snprintf(a1, sizeof(a1), "%u", ntohs(addr->port[0])); 5481 snprintf(a2, sizeof(a2), "%u", ntohs(addr->port[1])); 5482 if (!addr->port_op) 5483 ; 5484 else if (addr->port_op == PF_OP_IRG) 5485 snprintf(op, sizeof(op), "%s><%s", a1, a2); 5486 else if (addr->port_op == PF_OP_XRG) 5487 snprintf(op, sizeof(op), "%s<>%s", a1, a2); 5488 else if (addr->port_op == PF_OP_EQ) 5489 snprintf(op, sizeof(op), "%s", a1); 5490 else if (addr->port_op == PF_OP_NE) 5491 snprintf(op, sizeof(op), "!=%s", a1); 5492 else if (addr->port_op == PF_OP_LT) 5493 snprintf(op, sizeof(op), "<%s", a1); 5494 else if (addr->port_op == PF_OP_LE) 5495 snprintf(op, sizeof(op), "<=%s", a1); 5496 else if (addr->port_op == PF_OP_GT) 5497 snprintf(op, sizeof(op), ">%s", a1); 5498 else if (addr->port_op == PF_OP_GE) 5499 snprintf(op, sizeof(op), ">=%s", a1); 5500 expand_label_str(label, len, name, op); 5501 } 5502 } 5503 5504 void 5505 expand_label_proto(const char *name, char *label, size_t len, u_int8_t proto) 5506 { 5507 const char *protoname; 5508 char n[4]; 5509 5510 if (strstr(label, name) != NULL) { 5511 protoname = pfctl_proto2name(proto); 5512 if (protoname != NULL) 5513 expand_label_str(label, len, name, protoname); 5514 else { 5515 snprintf(n, sizeof(n), "%u", proto); 5516 expand_label_str(label, len, name, n); 5517 } 5518 } 5519 } 5520 5521 void 5522 expand_label_nr(const char *name, char *label, size_t len, 5523 struct pfctl_rule *r) 5524 { 5525 char n[11]; 5526 5527 if (strstr(label, name) != NULL) { 5528 snprintf(n, sizeof(n), "%u", r->nr); 5529 expand_label_str(label, len, name, n); 5530 } 5531 } 5532 5533 void 5534 expand_label(char *label, size_t len, struct pfctl_rule *r) 5535 { 5536 expand_label_if("$if", label, len, r->ifname); 5537 expand_label_addr("$srcaddr", label, len, r->af, &r->src); 5538 expand_label_addr("$dstaddr", label, len, r->af, &r->dst); 5539 expand_label_port("$srcport", label, len, &r->src); 5540 expand_label_port("$dstport", label, len, &r->dst); 5541 expand_label_proto("$proto", label, len, r->proto); 5542 expand_label_nr("$nr", label, len, r); 5543 } 5544 5545 int 5546 expand_altq(struct pf_altq *a, struct node_if *interfaces, 5547 struct node_queue *nqueues, struct node_queue_bw bwspec, 5548 struct node_queue_opt *opts) 5549 { 5550 struct pf_altq pa, pb; 5551 char qname[PF_QNAME_SIZE]; 5552 struct node_queue *n; 5553 struct node_queue_bw bw; 5554 int errs = 0; 5555 5556 if ((pf->loadopt & PFCTL_FLAG_ALTQ) == 0) { 5557 FREE_LIST(struct node_if, interfaces); 5558 if (nqueues) 5559 FREE_LIST(struct node_queue, nqueues); 5560 return (0); 5561 } 5562 5563 LOOP_THROUGH(struct node_if, interface, interfaces, 5564 memcpy(&pa, a, sizeof(struct pf_altq)); 5565 if (strlcpy(pa.ifname, interface->ifname, 5566 sizeof(pa.ifname)) >= sizeof(pa.ifname)) 5567 errx(1, "expand_altq: strlcpy"); 5568 5569 if (interface->not) { 5570 yyerror("altq on ! <interface> is not supported"); 5571 errs++; 5572 } else { 5573 if (eval_pfaltq(pf, &pa, &bwspec, opts)) 5574 errs++; 5575 else 5576 if (pfctl_add_altq(pf, &pa)) 5577 errs++; 5578 5579 if (pf->opts & PF_OPT_VERBOSE) { 5580 print_altq(&pf->paltq->altq, 0, 5581 &bwspec, opts); 5582 if (nqueues && nqueues->tail) { 5583 printf("queue { "); 5584 LOOP_THROUGH(struct node_queue, queue, 5585 nqueues, 5586 printf("%s ", 5587 queue->queue); 5588 ); 5589 printf("}"); 5590 } 5591 printf("\n"); 5592 } 5593 5594 if (pa.scheduler == ALTQT_CBQ || 5595 pa.scheduler == ALTQT_HFSC || 5596 pa.scheduler == ALTQT_FAIRQ) { 5597 /* now create a root queue */ 5598 memset(&pb, 0, sizeof(struct pf_altq)); 5599 if (strlcpy(qname, "root_", sizeof(qname)) >= 5600 sizeof(qname)) 5601 errx(1, "expand_altq: strlcpy"); 5602 if (strlcat(qname, interface->ifname, 5603 sizeof(qname)) >= sizeof(qname)) 5604 errx(1, "expand_altq: strlcat"); 5605 if (strlcpy(pb.qname, qname, 5606 sizeof(pb.qname)) >= sizeof(pb.qname)) 5607 errx(1, "expand_altq: strlcpy"); 5608 if (strlcpy(pb.ifname, interface->ifname, 5609 sizeof(pb.ifname)) >= sizeof(pb.ifname)) 5610 errx(1, "expand_altq: strlcpy"); 5611 pb.qlimit = pa.qlimit; 5612 pb.scheduler = pa.scheduler; 5613 bw.bw_absolute = pa.ifbandwidth; 5614 bw.bw_percent = 0; 5615 if (eval_pfqueue(pf, &pb, &bw, opts)) 5616 errs++; 5617 else 5618 if (pfctl_add_altq(pf, &pb)) 5619 errs++; 5620 } 5621 5622 LOOP_THROUGH(struct node_queue, queue, nqueues, 5623 n = calloc(1, sizeof(struct node_queue)); 5624 if (n == NULL) 5625 err(1, "expand_altq: calloc"); 5626 if (pa.scheduler == ALTQT_CBQ || 5627 pa.scheduler == ALTQT_HFSC || 5628 pa.scheduler == ALTQT_FAIRQ) 5629 if (strlcpy(n->parent, qname, 5630 sizeof(n->parent)) >= 5631 sizeof(n->parent)) 5632 errx(1, "expand_altq: strlcpy"); 5633 if (strlcpy(n->queue, queue->queue, 5634 sizeof(n->queue)) >= sizeof(n->queue)) 5635 errx(1, "expand_altq: strlcpy"); 5636 if (strlcpy(n->ifname, interface->ifname, 5637 sizeof(n->ifname)) >= sizeof(n->ifname)) 5638 errx(1, "expand_altq: strlcpy"); 5639 n->scheduler = pa.scheduler; 5640 n->next = NULL; 5641 n->tail = n; 5642 if (queues == NULL) 5643 queues = n; 5644 else { 5645 queues->tail->next = n; 5646 queues->tail = n; 5647 } 5648 ); 5649 } 5650 ); 5651 FREE_LIST(struct node_if, interfaces); 5652 if (nqueues) 5653 FREE_LIST(struct node_queue, nqueues); 5654 5655 return (errs); 5656 } 5657 5658 int 5659 expand_queue(struct pf_altq *a, struct node_if *interfaces, 5660 struct node_queue *nqueues, struct node_queue_bw bwspec, 5661 struct node_queue_opt *opts) 5662 { 5663 struct node_queue *n, *nq; 5664 struct pf_altq pa; 5665 u_int8_t found = 0; 5666 u_int8_t errs = 0; 5667 5668 if ((pf->loadopt & PFCTL_FLAG_ALTQ) == 0) { 5669 FREE_LIST(struct node_queue, nqueues); 5670 return (0); 5671 } 5672 5673 if (queues == NULL) { 5674 yyerror("queue %s has no parent", a->qname); 5675 FREE_LIST(struct node_queue, nqueues); 5676 return (1); 5677 } 5678 5679 LOOP_THROUGH(struct node_if, interface, interfaces, 5680 LOOP_THROUGH(struct node_queue, tqueue, queues, 5681 if (!strncmp(a->qname, tqueue->queue, PF_QNAME_SIZE) && 5682 (interface->ifname[0] == 0 || 5683 (!interface->not && !strncmp(interface->ifname, 5684 tqueue->ifname, IFNAMSIZ)) || 5685 (interface->not && strncmp(interface->ifname, 5686 tqueue->ifname, IFNAMSIZ)))) { 5687 /* found ourself in queues */ 5688 found++; 5689 5690 memcpy(&pa, a, sizeof(struct pf_altq)); 5691 5692 if (pa.scheduler != ALTQT_NONE && 5693 pa.scheduler != tqueue->scheduler) { 5694 yyerror("exactly one scheduler type " 5695 "per interface allowed"); 5696 return (1); 5697 } 5698 pa.scheduler = tqueue->scheduler; 5699 5700 /* scheduler dependent error checking */ 5701 switch (pa.scheduler) { 5702 case ALTQT_PRIQ: 5703 if (nqueues != NULL) { 5704 yyerror("priq queues cannot " 5705 "have child queues"); 5706 return (1); 5707 } 5708 if (bwspec.bw_absolute > 0 || 5709 bwspec.bw_percent < 100) { 5710 yyerror("priq doesn't take " 5711 "bandwidth"); 5712 return (1); 5713 } 5714 break; 5715 default: 5716 break; 5717 } 5718 5719 if (strlcpy(pa.ifname, tqueue->ifname, 5720 sizeof(pa.ifname)) >= sizeof(pa.ifname)) 5721 errx(1, "expand_queue: strlcpy"); 5722 if (strlcpy(pa.parent, tqueue->parent, 5723 sizeof(pa.parent)) >= sizeof(pa.parent)) 5724 errx(1, "expand_queue: strlcpy"); 5725 5726 if (eval_pfqueue(pf, &pa, &bwspec, opts)) 5727 errs++; 5728 else 5729 if (pfctl_add_altq(pf, &pa)) 5730 errs++; 5731 5732 for (nq = nqueues; nq != NULL; nq = nq->next) { 5733 if (!strcmp(a->qname, nq->queue)) { 5734 yyerror("queue cannot have " 5735 "itself as child"); 5736 errs++; 5737 continue; 5738 } 5739 n = calloc(1, 5740 sizeof(struct node_queue)); 5741 if (n == NULL) 5742 err(1, "expand_queue: calloc"); 5743 if (strlcpy(n->parent, a->qname, 5744 sizeof(n->parent)) >= 5745 sizeof(n->parent)) 5746 errx(1, "expand_queue strlcpy"); 5747 if (strlcpy(n->queue, nq->queue, 5748 sizeof(n->queue)) >= 5749 sizeof(n->queue)) 5750 errx(1, "expand_queue strlcpy"); 5751 if (strlcpy(n->ifname, tqueue->ifname, 5752 sizeof(n->ifname)) >= 5753 sizeof(n->ifname)) 5754 errx(1, "expand_queue strlcpy"); 5755 n->scheduler = tqueue->scheduler; 5756 n->next = NULL; 5757 n->tail = n; 5758 if (queues == NULL) 5759 queues = n; 5760 else { 5761 queues->tail->next = n; 5762 queues->tail = n; 5763 } 5764 } 5765 if ((pf->opts & PF_OPT_VERBOSE) && ( 5766 (found == 1 && interface->ifname[0] == 0) || 5767 (found > 0 && interface->ifname[0] != 0))) { 5768 print_queue(&pf->paltq->altq, 0, 5769 &bwspec, interface->ifname[0] != 0, 5770 opts); 5771 if (nqueues && nqueues->tail) { 5772 printf("{ "); 5773 LOOP_THROUGH(struct node_queue, 5774 queue, nqueues, 5775 printf("%s ", 5776 queue->queue); 5777 ); 5778 printf("}"); 5779 } 5780 printf("\n"); 5781 } 5782 } 5783 ); 5784 ); 5785 5786 FREE_LIST(struct node_queue, nqueues); 5787 FREE_LIST(struct node_if, interfaces); 5788 5789 if (!found) { 5790 yyerror("queue %s has no parent", a->qname); 5791 errs++; 5792 } 5793 5794 if (errs) 5795 return (1); 5796 else 5797 return (0); 5798 } 5799 5800 static int 5801 pf_af_to_proto(sa_family_t af) 5802 { 5803 if (af == AF_INET) 5804 return (ETHERTYPE_IP); 5805 if (af == AF_INET6) 5806 return (ETHERTYPE_IPV6); 5807 5808 return (0); 5809 } 5810 5811 void 5812 expand_eth_rule(struct pfctl_eth_rule *r, 5813 struct node_if *interfaces, struct node_etherproto *protos, 5814 struct node_mac *srcs, struct node_mac *dsts, 5815 struct node_host *ipsrcs, struct node_host *ipdsts, 5816 const char *bridge_to, const char *anchor_call) 5817 { 5818 char tagname[PF_TAG_NAME_SIZE]; 5819 char match_tagname[PF_TAG_NAME_SIZE]; 5820 char qname[PF_QNAME_SIZE]; 5821 5822 if (strlcpy(tagname, r->tagname, sizeof(tagname)) >= sizeof(tagname)) 5823 errx(1, "expand_eth_rule: tagname"); 5824 if (strlcpy(match_tagname, r->match_tagname, sizeof(match_tagname)) >= 5825 sizeof(match_tagname)) 5826 errx(1, "expand_eth_rule: match_tagname"); 5827 if (strlcpy(qname, r->qname, sizeof(qname)) >= sizeof(qname)) 5828 errx(1, "expand_eth_rule: qname"); 5829 5830 LOOP_THROUGH(struct node_if, interface, interfaces, 5831 LOOP_THROUGH(struct node_etherproto, proto, protos, 5832 LOOP_THROUGH(struct node_mac, src, srcs, 5833 LOOP_THROUGH(struct node_mac, dst, dsts, 5834 LOOP_THROUGH(struct node_host, ipsrc, ipsrcs, 5835 LOOP_THROUGH(struct node_host, ipdst, ipdsts, 5836 strlcpy(r->ifname, interface->ifname, 5837 sizeof(r->ifname)); 5838 r->ifnot = interface->not; 5839 r->proto = proto->proto; 5840 if (!r->proto && ipsrc->af) 5841 r->proto = pf_af_to_proto(ipsrc->af); 5842 else if (!r->proto && ipdst->af) 5843 r->proto = pf_af_to_proto(ipdst->af); 5844 bcopy(src->mac, r->src.addr, ETHER_ADDR_LEN); 5845 bcopy(src->mask, r->src.mask, ETHER_ADDR_LEN); 5846 r->src.neg = src->neg; 5847 r->src.isset = src->isset; 5848 r->ipsrc.addr = ipsrc->addr; 5849 r->ipsrc.neg = ipsrc->not; 5850 r->ipdst.addr = ipdst->addr; 5851 r->ipdst.neg = ipdst->not; 5852 bcopy(dst->mac, r->dst.addr, ETHER_ADDR_LEN); 5853 bcopy(dst->mask, r->dst.mask, ETHER_ADDR_LEN); 5854 r->dst.neg = dst->neg; 5855 r->dst.isset = dst->isset; 5856 r->nr = pf->eastack[pf->asd]->match++; 5857 5858 if (strlcpy(r->tagname, tagname, sizeof(r->tagname)) >= 5859 sizeof(r->tagname)) 5860 errx(1, "expand_eth_rule: r->tagname"); 5861 if (strlcpy(r->match_tagname, match_tagname, 5862 sizeof(r->match_tagname)) >= sizeof(r->match_tagname)) 5863 errx(1, "expand_eth_rule: r->match_tagname"); 5864 if (strlcpy(r->qname, qname, sizeof(r->qname)) >= sizeof(r->qname)) 5865 errx(1, "expand_eth_rule: r->qname"); 5866 5867 if (bridge_to) 5868 strlcpy(r->bridge_to, bridge_to, sizeof(r->bridge_to)); 5869 5870 pfctl_append_eth_rule(pf, r, anchor_call); 5871 )))))); 5872 5873 FREE_LIST(struct node_if, interfaces); 5874 FREE_LIST(struct node_etherproto, protos); 5875 FREE_LIST(struct node_mac, srcs); 5876 FREE_LIST(struct node_mac, dsts); 5877 FREE_LIST(struct node_host, ipsrcs); 5878 FREE_LIST(struct node_host, ipdsts); 5879 } 5880 5881 void 5882 expand_rule(struct pfctl_rule *r, 5883 struct node_if *interfaces, struct node_host *rpool_hosts, 5884 struct node_proto *protos, struct node_os *src_oses, 5885 struct node_host *src_hosts, struct node_port *src_ports, 5886 struct node_host *dst_hosts, struct node_port *dst_ports, 5887 struct node_uid *uids, struct node_gid *gids, struct node_icmp *icmp_types, 5888 const char *anchor_call) 5889 { 5890 sa_family_t af = r->af; 5891 int added = 0, error = 0; 5892 char ifname[IF_NAMESIZE]; 5893 char label[PF_RULE_MAX_LABEL_COUNT][PF_RULE_LABEL_SIZE]; 5894 char tagname[PF_TAG_NAME_SIZE]; 5895 char match_tagname[PF_TAG_NAME_SIZE]; 5896 struct pf_pooladdr *pa; 5897 struct node_host *h; 5898 u_int8_t flags, flagset, keep_state; 5899 5900 memcpy(label, r->label, sizeof(r->label)); 5901 assert(sizeof(r->label) == sizeof(label)); 5902 if (strlcpy(tagname, r->tagname, sizeof(tagname)) >= sizeof(tagname)) 5903 errx(1, "expand_rule: strlcpy"); 5904 if (strlcpy(match_tagname, r->match_tagname, sizeof(match_tagname)) >= 5905 sizeof(match_tagname)) 5906 errx(1, "expand_rule: strlcpy"); 5907 flags = r->flags; 5908 flagset = r->flagset; 5909 keep_state = r->keep_state; 5910 5911 LOOP_THROUGH(struct node_if, interface, interfaces, 5912 LOOP_THROUGH(struct node_proto, proto, protos, 5913 LOOP_THROUGH(struct node_icmp, icmp_type, icmp_types, 5914 LOOP_THROUGH(struct node_host, src_host, src_hosts, 5915 LOOP_THROUGH(struct node_port, src_port, src_ports, 5916 LOOP_THROUGH(struct node_os, src_os, src_oses, 5917 LOOP_THROUGH(struct node_host, dst_host, dst_hosts, 5918 LOOP_THROUGH(struct node_port, dst_port, dst_ports, 5919 LOOP_THROUGH(struct node_uid, uid, uids, 5920 LOOP_THROUGH(struct node_gid, gid, gids, 5921 5922 r->af = af; 5923 /* for link-local IPv6 address, interface must match up */ 5924 if ((r->af && src_host->af && r->af != src_host->af) || 5925 (r->af && dst_host->af && r->af != dst_host->af) || 5926 (src_host->af && dst_host->af && 5927 src_host->af != dst_host->af) || 5928 (src_host->ifindex && dst_host->ifindex && 5929 src_host->ifindex != dst_host->ifindex) || 5930 (src_host->ifindex && *interface->ifname && 5931 src_host->ifindex != if_nametoindex(interface->ifname)) || 5932 (dst_host->ifindex && *interface->ifname && 5933 dst_host->ifindex != if_nametoindex(interface->ifname))) 5934 continue; 5935 if (!r->af && src_host->af) 5936 r->af = src_host->af; 5937 else if (!r->af && dst_host->af) 5938 r->af = dst_host->af; 5939 5940 if (*interface->ifname) 5941 strlcpy(r->ifname, interface->ifname, 5942 sizeof(r->ifname)); 5943 else if (if_indextoname(src_host->ifindex, ifname)) 5944 strlcpy(r->ifname, ifname, sizeof(r->ifname)); 5945 else if (if_indextoname(dst_host->ifindex, ifname)) 5946 strlcpy(r->ifname, ifname, sizeof(r->ifname)); 5947 else 5948 memset(r->ifname, '\0', sizeof(r->ifname)); 5949 5950 memcpy(r->label, label, sizeof(r->label)); 5951 if (strlcpy(r->tagname, tagname, sizeof(r->tagname)) >= 5952 sizeof(r->tagname)) 5953 errx(1, "expand_rule: strlcpy"); 5954 if (strlcpy(r->match_tagname, match_tagname, 5955 sizeof(r->match_tagname)) >= sizeof(r->match_tagname)) 5956 errx(1, "expand_rule: strlcpy"); 5957 5958 error += check_netmask(src_host, r->af); 5959 error += check_netmask(dst_host, r->af); 5960 5961 r->ifnot = interface->not; 5962 r->proto = proto->proto; 5963 r->src.addr = src_host->addr; 5964 r->src.neg = src_host->not; 5965 r->src.port[0] = src_port->port[0]; 5966 r->src.port[1] = src_port->port[1]; 5967 r->src.port_op = src_port->op; 5968 r->dst.addr = dst_host->addr; 5969 r->dst.neg = dst_host->not; 5970 r->dst.port[0] = dst_port->port[0]; 5971 r->dst.port[1] = dst_port->port[1]; 5972 r->dst.port_op = dst_port->op; 5973 r->uid.op = uid->op; 5974 r->uid.uid[0] = uid->uid[0]; 5975 r->uid.uid[1] = uid->uid[1]; 5976 r->gid.op = gid->op; 5977 r->gid.gid[0] = gid->gid[0]; 5978 r->gid.gid[1] = gid->gid[1]; 5979 r->type = icmp_type->type; 5980 r->code = icmp_type->code; 5981 5982 if ((keep_state == PF_STATE_MODULATE || 5983 keep_state == PF_STATE_SYNPROXY) && 5984 r->proto && r->proto != IPPROTO_TCP) 5985 r->keep_state = PF_STATE_NORMAL; 5986 else 5987 r->keep_state = keep_state; 5988 5989 if (r->proto && r->proto != IPPROTO_TCP) { 5990 r->flags = 0; 5991 r->flagset = 0; 5992 } else { 5993 r->flags = flags; 5994 r->flagset = flagset; 5995 } 5996 if (icmp_type->proto && r->proto != icmp_type->proto) { 5997 yyerror("icmp-type mismatch"); 5998 error++; 5999 } 6000 6001 if (src_os && src_os->os) { 6002 r->os_fingerprint = pfctl_get_fingerprint(src_os->os); 6003 if ((pf->opts & PF_OPT_VERBOSE2) && 6004 r->os_fingerprint == PF_OSFP_NOMATCH) 6005 fprintf(stderr, 6006 "warning: unknown '%s' OS fingerprint\n", 6007 src_os->os); 6008 } else { 6009 r->os_fingerprint = PF_OSFP_ANY; 6010 } 6011 6012 TAILQ_INIT(&r->rpool.list); 6013 for (h = rpool_hosts; h != NULL; h = h->next) { 6014 pa = calloc(1, sizeof(struct pf_pooladdr)); 6015 if (pa == NULL) 6016 err(1, "expand_rule: calloc"); 6017 pa->addr = h->addr; 6018 if (h->ifname != NULL) { 6019 if (strlcpy(pa->ifname, h->ifname, 6020 sizeof(pa->ifname)) >= 6021 sizeof(pa->ifname)) 6022 errx(1, "expand_rule: strlcpy"); 6023 } else 6024 pa->ifname[0] = 0; 6025 TAILQ_INSERT_TAIL(&r->rpool.list, pa, entries); 6026 } 6027 6028 if (rule_consistent(r, anchor_call[0]) < 0 || error) 6029 yyerror("skipping rule due to errors"); 6030 else { 6031 r->nr = pf->astack[pf->asd]->match++; 6032 pfctl_append_rule(pf, r, anchor_call); 6033 added++; 6034 } 6035 6036 )))))))))); 6037 6038 FREE_LIST(struct node_if, interfaces); 6039 FREE_LIST(struct node_proto, protos); 6040 FREE_LIST(struct node_host, src_hosts); 6041 FREE_LIST(struct node_port, src_ports); 6042 FREE_LIST(struct node_os, src_oses); 6043 FREE_LIST(struct node_host, dst_hosts); 6044 FREE_LIST(struct node_port, dst_ports); 6045 FREE_LIST(struct node_uid, uids); 6046 FREE_LIST(struct node_gid, gids); 6047 FREE_LIST(struct node_icmp, icmp_types); 6048 FREE_LIST(struct node_host, rpool_hosts); 6049 6050 if (!added) 6051 yyerror("rule expands to no valid combination"); 6052 } 6053 6054 int 6055 expand_skip_interface(struct node_if *interfaces) 6056 { 6057 int errs = 0; 6058 6059 if (!interfaces || (!interfaces->next && !interfaces->not && 6060 !strcmp(interfaces->ifname, "none"))) { 6061 if (pf->opts & PF_OPT_VERBOSE) 6062 printf("set skip on none\n"); 6063 errs = pfctl_set_interface_flags(pf, "", PFI_IFLAG_SKIP, 0); 6064 return (errs); 6065 } 6066 6067 if (pf->opts & PF_OPT_VERBOSE) 6068 printf("set skip on {"); 6069 LOOP_THROUGH(struct node_if, interface, interfaces, 6070 if (pf->opts & PF_OPT_VERBOSE) 6071 printf(" %s", interface->ifname); 6072 if (interface->not) { 6073 yyerror("skip on ! <interface> is not supported"); 6074 errs++; 6075 } else 6076 errs += pfctl_set_interface_flags(pf, 6077 interface->ifname, PFI_IFLAG_SKIP, 1); 6078 ); 6079 if (pf->opts & PF_OPT_VERBOSE) 6080 printf(" }\n"); 6081 6082 FREE_LIST(struct node_if, interfaces); 6083 6084 if (errs) 6085 return (1); 6086 else 6087 return (0); 6088 } 6089 6090 #undef FREE_LIST 6091 #undef LOOP_THROUGH 6092 6093 int 6094 check_rulestate(int desired_state) 6095 { 6096 if (require_order && (rulestate > desired_state)) { 6097 yyerror("Rules must be in order: options, ethernet, " 6098 "normalization, queueing, translation, filtering"); 6099 return (1); 6100 } 6101 rulestate = desired_state; 6102 return (0); 6103 } 6104 6105 int 6106 kw_cmp(const void *k, const void *e) 6107 { 6108 return (strcmp(k, ((const struct keywords *)e)->k_name)); 6109 } 6110 6111 int 6112 lookup(char *s) 6113 { 6114 /* this has to be sorted always */ 6115 static const struct keywords keywords[] = { 6116 { "all", ALL}, 6117 { "allow-opts", ALLOWOPTS}, 6118 { "altq", ALTQ}, 6119 { "anchor", ANCHOR}, 6120 { "antispoof", ANTISPOOF}, 6121 { "any", ANY}, 6122 { "bandwidth", BANDWIDTH}, 6123 { "binat", BINAT}, 6124 { "binat-anchor", BINATANCHOR}, 6125 { "bitmask", BITMASK}, 6126 { "block", BLOCK}, 6127 { "block-policy", BLOCKPOLICY}, 6128 { "bridge-to", BRIDGE_TO}, 6129 { "buckets", BUCKETS}, 6130 { "cbq", CBQ}, 6131 { "code", CODE}, 6132 { "codelq", CODEL}, 6133 { "crop", FRAGCROP}, 6134 { "debug", DEBUG}, 6135 { "divert-reply", DIVERTREPLY}, 6136 { "divert-to", DIVERTTO}, 6137 { "dnpipe", DNPIPE}, 6138 { "dnqueue", DNQUEUE}, 6139 { "drop", DROP}, 6140 { "drop-ovl", FRAGDROP}, 6141 { "dup-to", DUPTO}, 6142 { "ether", ETHER}, 6143 { "fail-policy", FAILPOLICY}, 6144 { "fairq", FAIRQ}, 6145 { "fastroute", FASTROUTE}, 6146 { "file", FILENAME}, 6147 { "fingerprints", FINGERPRINTS}, 6148 { "flags", FLAGS}, 6149 { "floating", FLOATING}, 6150 { "flush", FLUSH}, 6151 { "for", FOR}, 6152 { "fragment", FRAGMENT}, 6153 { "from", FROM}, 6154 { "global", GLOBAL}, 6155 { "group", GROUP}, 6156 { "hfsc", HFSC}, 6157 { "hogs", HOGS}, 6158 { "hostid", HOSTID}, 6159 { "icmp-type", ICMPTYPE}, 6160 { "icmp6-type", ICMP6TYPE}, 6161 { "if-bound", IFBOUND}, 6162 { "in", IN}, 6163 { "include", INCLUDE}, 6164 { "inet", INET}, 6165 { "inet6", INET6}, 6166 { "interval", INTERVAL}, 6167 { "keep", KEEP}, 6168 { "keepcounters", KEEPCOUNTERS}, 6169 { "l3", L3}, 6170 { "label", LABEL}, 6171 { "limit", LIMIT}, 6172 { "linkshare", LINKSHARE}, 6173 { "load", LOAD}, 6174 { "log", LOG}, 6175 { "loginterface", LOGINTERFACE}, 6176 { "map-e-portset", MAPEPORTSET}, 6177 { "match", MATCH}, 6178 { "max", MAXIMUM}, 6179 { "max-mss", MAXMSS}, 6180 { "max-src-conn", MAXSRCCONN}, 6181 { "max-src-conn-rate", MAXSRCCONNRATE}, 6182 { "max-src-nodes", MAXSRCNODES}, 6183 { "max-src-states", MAXSRCSTATES}, 6184 { "min-ttl", MINTTL}, 6185 { "modulate", MODULATE}, 6186 { "nat", NAT}, 6187 { "nat-anchor", NATANCHOR}, 6188 { "no", NO}, 6189 { "no-df", NODF}, 6190 { "no-route", NOROUTE}, 6191 { "no-sync", NOSYNC}, 6192 { "on", ON}, 6193 { "optimization", OPTIMIZATION}, 6194 { "os", OS}, 6195 { "out", OUT}, 6196 { "overload", OVERLOAD}, 6197 { "pass", PASS}, 6198 { "port", PORT}, 6199 { "prio", PRIO}, 6200 { "priority", PRIORITY}, 6201 { "priq", PRIQ}, 6202 { "probability", PROBABILITY}, 6203 { "proto", PROTO}, 6204 { "qlimit", QLIMIT}, 6205 { "queue", QUEUE}, 6206 { "quick", QUICK}, 6207 { "random", RANDOM}, 6208 { "random-id", RANDOMID}, 6209 { "rdr", RDR}, 6210 { "rdr-anchor", RDRANCHOR}, 6211 { "realtime", REALTIME}, 6212 { "reassemble", REASSEMBLE}, 6213 { "reply-to", REPLYTO}, 6214 { "require-order", REQUIREORDER}, 6215 { "return", RETURN}, 6216 { "return-icmp", RETURNICMP}, 6217 { "return-icmp6", RETURNICMP6}, 6218 { "return-rst", RETURNRST}, 6219 { "ridentifier", RIDENTIFIER}, 6220 { "round-robin", ROUNDROBIN}, 6221 { "route", ROUTE}, 6222 { "route-to", ROUTETO}, 6223 { "rtable", RTABLE}, 6224 { "rule", RULE}, 6225 { "ruleset-optimization", RULESET_OPTIMIZATION}, 6226 { "scrub", SCRUB}, 6227 { "set", SET}, 6228 { "set-tos", SETTOS}, 6229 { "skip", SKIP}, 6230 { "sloppy", SLOPPY}, 6231 { "source-hash", SOURCEHASH}, 6232 { "source-track", SOURCETRACK}, 6233 { "state", STATE}, 6234 { "state-defaults", STATEDEFAULTS}, 6235 { "state-policy", STATEPOLICY}, 6236 { "static-port", STATICPORT}, 6237 { "sticky-address", STICKYADDRESS}, 6238 { "syncookies", SYNCOOKIES}, 6239 { "synproxy", SYNPROXY}, 6240 { "table", TABLE}, 6241 { "tag", TAG}, 6242 { "tagged", TAGGED}, 6243 { "target", TARGET}, 6244 { "tbrsize", TBRSIZE}, 6245 { "timeout", TIMEOUT}, 6246 { "to", TO}, 6247 { "tos", TOS}, 6248 { "ttl", TTL}, 6249 { "upperlimit", UPPERLIMIT}, 6250 { "urpf-failed", URPFFAILED}, 6251 { "user", USER}, 6252 }; 6253 const struct keywords *p; 6254 6255 p = bsearch(s, keywords, sizeof(keywords)/sizeof(keywords[0]), 6256 sizeof(keywords[0]), kw_cmp); 6257 6258 if (p) { 6259 if (debug > 1) 6260 fprintf(stderr, "%s: %d\n", s, p->k_val); 6261 return (p->k_val); 6262 } else { 6263 if (debug > 1) 6264 fprintf(stderr, "string: %s\n", s); 6265 return (STRING); 6266 } 6267 } 6268 6269 #define MAXPUSHBACK 128 6270 6271 static char *parsebuf; 6272 static int parseindex; 6273 static char pushback_buffer[MAXPUSHBACK]; 6274 static int pushback_index = 0; 6275 6276 int 6277 lgetc(int quotec) 6278 { 6279 int c, next; 6280 6281 if (parsebuf) { 6282 /* Read character from the parsebuffer instead of input. */ 6283 if (parseindex >= 0) { 6284 c = parsebuf[parseindex++]; 6285 if (c != '\0') 6286 return (c); 6287 parsebuf = NULL; 6288 } else 6289 parseindex++; 6290 } 6291 6292 if (pushback_index) 6293 return (pushback_buffer[--pushback_index]); 6294 6295 if (quotec) { 6296 if ((c = getc(file->stream)) == EOF) { 6297 yyerror("reached end of file while parsing quoted string"); 6298 if (popfile() == EOF) 6299 return (EOF); 6300 return (quotec); 6301 } 6302 return (c); 6303 } 6304 6305 while ((c = getc(file->stream)) == '\\') { 6306 next = getc(file->stream); 6307 if (next != '\n') { 6308 c = next; 6309 break; 6310 } 6311 yylval.lineno = file->lineno; 6312 file->lineno++; 6313 } 6314 6315 while (c == EOF) { 6316 if (popfile() == EOF) 6317 return (EOF); 6318 c = getc(file->stream); 6319 } 6320 return (c); 6321 } 6322 6323 int 6324 lungetc(int c) 6325 { 6326 if (c == EOF) 6327 return (EOF); 6328 if (parsebuf) { 6329 parseindex--; 6330 if (parseindex >= 0) 6331 return (c); 6332 } 6333 if (pushback_index < MAXPUSHBACK-1) 6334 return (pushback_buffer[pushback_index++] = c); 6335 else 6336 return (EOF); 6337 } 6338 6339 int 6340 findeol(void) 6341 { 6342 int c; 6343 6344 parsebuf = NULL; 6345 6346 /* skip to either EOF or the first real EOL */ 6347 while (1) { 6348 if (pushback_index) 6349 c = pushback_buffer[--pushback_index]; 6350 else 6351 c = lgetc(0); 6352 if (c == '\n') { 6353 file->lineno++; 6354 break; 6355 } 6356 if (c == EOF) 6357 break; 6358 } 6359 return (ERROR); 6360 } 6361 6362 int 6363 yylex(void) 6364 { 6365 char buf[8096]; 6366 char *p, *val; 6367 int quotec, next, c; 6368 int token; 6369 6370 top: 6371 p = buf; 6372 while ((c = lgetc(0)) == ' ' || c == '\t') 6373 ; /* nothing */ 6374 6375 yylval.lineno = file->lineno; 6376 if (c == '#') 6377 while ((c = lgetc(0)) != '\n' && c != EOF) 6378 ; /* nothing */ 6379 if (c == '$' && parsebuf == NULL) { 6380 while (1) { 6381 if ((c = lgetc(0)) == EOF) 6382 return (0); 6383 6384 if (p + 1 >= buf + sizeof(buf) - 1) { 6385 yyerror("string too long"); 6386 return (findeol()); 6387 } 6388 if (isalnum(c) || c == '_') { 6389 *p++ = (char)c; 6390 continue; 6391 } 6392 *p = '\0'; 6393 lungetc(c); 6394 break; 6395 } 6396 val = symget(buf); 6397 if (val == NULL) { 6398 yyerror("macro '%s' not defined", buf); 6399 return (findeol()); 6400 } 6401 parsebuf = val; 6402 parseindex = 0; 6403 goto top; 6404 } 6405 6406 switch (c) { 6407 case '\'': 6408 case '"': 6409 quotec = c; 6410 while (1) { 6411 if ((c = lgetc(quotec)) == EOF) 6412 return (0); 6413 if (c == '\n') { 6414 file->lineno++; 6415 continue; 6416 } else if (c == '\\') { 6417 if ((next = lgetc(quotec)) == EOF) 6418 return (0); 6419 if (next == quotec || c == ' ' || c == '\t') 6420 c = next; 6421 else if (next == '\n') { 6422 file->lineno++; 6423 continue; 6424 } 6425 else 6426 lungetc(next); 6427 } else if (c == quotec) { 6428 *p = '\0'; 6429 break; 6430 } 6431 if (p + 1 >= buf + sizeof(buf) - 1) { 6432 yyerror("string too long"); 6433 return (findeol()); 6434 } 6435 *p++ = (char)c; 6436 } 6437 yylval.v.string = strdup(buf); 6438 if (yylval.v.string == NULL) 6439 err(1, "yylex: strdup"); 6440 return (STRING); 6441 case '<': 6442 next = lgetc(0); 6443 if (next == '>') { 6444 yylval.v.i = PF_OP_XRG; 6445 return (PORTBINARY); 6446 } 6447 lungetc(next); 6448 break; 6449 case '>': 6450 next = lgetc(0); 6451 if (next == '<') { 6452 yylval.v.i = PF_OP_IRG; 6453 return (PORTBINARY); 6454 } 6455 lungetc(next); 6456 break; 6457 case '-': 6458 next = lgetc(0); 6459 if (next == '>') 6460 return (ARROW); 6461 lungetc(next); 6462 break; 6463 } 6464 6465 #define allowed_to_end_number(x) \ 6466 (isspace(x) || x == ')' || x ==',' || x == '/' || x == '}' || x == '=') 6467 6468 if (c == '-' || isdigit(c)) { 6469 do { 6470 *p++ = c; 6471 if ((unsigned)(p-buf) >= sizeof(buf)) { 6472 yyerror("string too long"); 6473 return (findeol()); 6474 } 6475 } while ((c = lgetc(0)) != EOF && isdigit(c)); 6476 lungetc(c); 6477 if (p == buf + 1 && buf[0] == '-') 6478 goto nodigits; 6479 if (c == EOF || allowed_to_end_number(c)) { 6480 const char *errstr = NULL; 6481 6482 *p = '\0'; 6483 yylval.v.number = strtonum(buf, LLONG_MIN, 6484 LLONG_MAX, &errstr); 6485 if (errstr) { 6486 yyerror("\"%s\" invalid number: %s", 6487 buf, errstr); 6488 return (findeol()); 6489 } 6490 return (NUMBER); 6491 } else { 6492 nodigits: 6493 while (p > buf + 1) 6494 lungetc(*--p); 6495 c = *--p; 6496 if (c == '-') 6497 return (c); 6498 } 6499 } 6500 6501 #define allowed_in_string(x) \ 6502 (isalnum(x) || (ispunct(x) && x != '(' && x != ')' && \ 6503 x != '{' && x != '}' && x != '<' && x != '>' && \ 6504 x != '!' && x != '=' && x != '/' && x != '#' && \ 6505 x != ',')) 6506 6507 if (isalnum(c) || c == ':' || c == '_') { 6508 do { 6509 *p++ = c; 6510 if ((unsigned)(p-buf) >= sizeof(buf)) { 6511 yyerror("string too long"); 6512 return (findeol()); 6513 } 6514 } while ((c = lgetc(0)) != EOF && (allowed_in_string(c))); 6515 lungetc(c); 6516 *p = '\0'; 6517 if ((token = lookup(buf)) == STRING) 6518 if ((yylval.v.string = strdup(buf)) == NULL) 6519 err(1, "yylex: strdup"); 6520 return (token); 6521 } 6522 if (c == '\n') { 6523 yylval.lineno = file->lineno; 6524 file->lineno++; 6525 } 6526 if (c == EOF) 6527 return (0); 6528 return (c); 6529 } 6530 6531 int 6532 check_file_secrecy(int fd, const char *fname) 6533 { 6534 struct stat st; 6535 6536 if (fstat(fd, &st)) { 6537 warn("cannot stat %s", fname); 6538 return (-1); 6539 } 6540 if (st.st_uid != 0 && st.st_uid != getuid()) { 6541 warnx("%s: owner not root or current user", fname); 6542 return (-1); 6543 } 6544 if (st.st_mode & (S_IRWXG | S_IRWXO)) { 6545 warnx("%s: group/world readable/writeable", fname); 6546 return (-1); 6547 } 6548 return (0); 6549 } 6550 6551 struct file * 6552 pushfile(const char *name, int secret) 6553 { 6554 struct file *nfile; 6555 6556 if ((nfile = calloc(1, sizeof(struct file))) == NULL || 6557 (nfile->name = strdup(name)) == NULL) { 6558 warn("malloc"); 6559 return (NULL); 6560 } 6561 if (TAILQ_FIRST(&files) == NULL && strcmp(nfile->name, "-") == 0) { 6562 nfile->stream = stdin; 6563 free(nfile->name); 6564 if ((nfile->name = strdup("stdin")) == NULL) { 6565 warn("strdup"); 6566 free(nfile); 6567 return (NULL); 6568 } 6569 } else if ((nfile->stream = fopen(nfile->name, "r")) == NULL) { 6570 warn("%s", nfile->name); 6571 free(nfile->name); 6572 free(nfile); 6573 return (NULL); 6574 } else if (secret && 6575 check_file_secrecy(fileno(nfile->stream), nfile->name)) { 6576 fclose(nfile->stream); 6577 free(nfile->name); 6578 free(nfile); 6579 return (NULL); 6580 } 6581 nfile->lineno = 1; 6582 TAILQ_INSERT_TAIL(&files, nfile, entry); 6583 return (nfile); 6584 } 6585 6586 int 6587 popfile(void) 6588 { 6589 struct file *prev; 6590 6591 if ((prev = TAILQ_PREV(file, files, entry)) != NULL) { 6592 prev->errors += file->errors; 6593 TAILQ_REMOVE(&files, file, entry); 6594 fclose(file->stream); 6595 free(file->name); 6596 free(file); 6597 file = prev; 6598 return (0); 6599 } 6600 return (EOF); 6601 } 6602 6603 int 6604 parse_config(char *filename, struct pfctl *xpf) 6605 { 6606 int errors = 0; 6607 struct sym *sym; 6608 6609 pf = xpf; 6610 errors = 0; 6611 rulestate = PFCTL_STATE_NONE; 6612 returnicmpdefault = (ICMP_UNREACH << 8) | ICMP_UNREACH_PORT; 6613 returnicmp6default = 6614 (ICMP6_DST_UNREACH << 8) | ICMP6_DST_UNREACH_NOPORT; 6615 blockpolicy = PFRULE_DROP; 6616 failpolicy = PFRULE_DROP; 6617 require_order = 1; 6618 6619 if ((file = pushfile(filename, 0)) == NULL) { 6620 warn("cannot open the main config file!"); 6621 return (-1); 6622 } 6623 6624 yyparse(); 6625 errors = file->errors; 6626 popfile(); 6627 6628 /* Free macros and check which have not been used. */ 6629 while ((sym = TAILQ_FIRST(&symhead))) { 6630 if ((pf->opts & PF_OPT_VERBOSE2) && !sym->used) 6631 fprintf(stderr, "warning: macro '%s' not " 6632 "used\n", sym->nam); 6633 free(sym->nam); 6634 free(sym->val); 6635 TAILQ_REMOVE(&symhead, sym, entry); 6636 free(sym); 6637 } 6638 6639 return (errors ? -1 : 0); 6640 } 6641 6642 int 6643 symset(const char *nam, const char *val, int persist) 6644 { 6645 struct sym *sym; 6646 6647 for (sym = TAILQ_FIRST(&symhead); sym && strcmp(nam, sym->nam); 6648 sym = TAILQ_NEXT(sym, entry)) 6649 ; /* nothing */ 6650 6651 if (sym != NULL) { 6652 if (sym->persist == 1) 6653 return (0); 6654 else { 6655 free(sym->nam); 6656 free(sym->val); 6657 TAILQ_REMOVE(&symhead, sym, entry); 6658 free(sym); 6659 } 6660 } 6661 if ((sym = calloc(1, sizeof(*sym))) == NULL) 6662 return (-1); 6663 6664 sym->nam = strdup(nam); 6665 if (sym->nam == NULL) { 6666 free(sym); 6667 return (-1); 6668 } 6669 sym->val = strdup(val); 6670 if (sym->val == NULL) { 6671 free(sym->nam); 6672 free(sym); 6673 return (-1); 6674 } 6675 sym->used = 0; 6676 sym->persist = persist; 6677 TAILQ_INSERT_TAIL(&symhead, sym, entry); 6678 return (0); 6679 } 6680 6681 int 6682 pfctl_cmdline_symset(char *s) 6683 { 6684 char *sym, *val; 6685 int ret; 6686 6687 if ((val = strrchr(s, '=')) == NULL) 6688 return (-1); 6689 6690 if ((sym = malloc(strlen(s) - strlen(val) + 1)) == NULL) 6691 err(1, "pfctl_cmdline_symset: malloc"); 6692 6693 strlcpy(sym, s, strlen(s) - strlen(val) + 1); 6694 6695 ret = symset(sym, val + 1, 1); 6696 free(sym); 6697 6698 return (ret); 6699 } 6700 6701 char * 6702 symget(const char *nam) 6703 { 6704 struct sym *sym; 6705 6706 TAILQ_FOREACH(sym, &symhead, entry) 6707 if (strcmp(nam, sym->nam) == 0) { 6708 sym->used = 1; 6709 return (sym->val); 6710 } 6711 return (NULL); 6712 } 6713 6714 void 6715 mv_rules(struct pfctl_ruleset *src, struct pfctl_ruleset *dst) 6716 { 6717 int i; 6718 struct pfctl_rule *r; 6719 6720 for (i = 0; i < PF_RULESET_MAX; ++i) { 6721 while ((r = TAILQ_FIRST(src->rules[i].active.ptr)) 6722 != NULL) { 6723 TAILQ_REMOVE(src->rules[i].active.ptr, r, entries); 6724 TAILQ_INSERT_TAIL(dst->rules[i].active.ptr, r, entries); 6725 dst->anchor->match++; 6726 } 6727 src->anchor->match = 0; 6728 while ((r = TAILQ_FIRST(src->rules[i].inactive.ptr)) 6729 != NULL) { 6730 TAILQ_REMOVE(src->rules[i].inactive.ptr, r, entries); 6731 TAILQ_INSERT_TAIL(dst->rules[i].inactive.ptr, 6732 r, entries); 6733 } 6734 } 6735 } 6736 6737 void 6738 mv_eth_rules(struct pfctl_eth_ruleset *src, struct pfctl_eth_ruleset *dst) 6739 { 6740 struct pfctl_eth_rule *r; 6741 6742 while ((r = TAILQ_FIRST(&src->rules)) != NULL) { 6743 TAILQ_REMOVE(&src->rules, r, entries); 6744 TAILQ_INSERT_TAIL(&dst->rules, r, entries); 6745 dst->anchor->match++; 6746 } 6747 src->anchor->match = 0; 6748 } 6749 6750 void 6751 decide_address_family(struct node_host *n, sa_family_t *af) 6752 { 6753 if (*af != 0 || n == NULL) 6754 return; 6755 *af = n->af; 6756 while ((n = n->next) != NULL) { 6757 if (n->af != *af) { 6758 *af = 0; 6759 return; 6760 } 6761 } 6762 } 6763 6764 void 6765 remove_invalid_hosts(struct node_host **nh, sa_family_t *af) 6766 { 6767 struct node_host *n = *nh, *prev = NULL; 6768 6769 while (n != NULL) { 6770 if (*af && n->af && n->af != *af) { 6771 /* unlink and free n */ 6772 struct node_host *next = n->next; 6773 6774 /* adjust tail pointer */ 6775 if (n == (*nh)->tail) 6776 (*nh)->tail = prev; 6777 /* adjust previous node's next pointer */ 6778 if (prev == NULL) 6779 *nh = next; 6780 else 6781 prev->next = next; 6782 /* free node */ 6783 if (n->ifname != NULL) 6784 free(n->ifname); 6785 free(n); 6786 n = next; 6787 } else { 6788 if (n->af && !*af) 6789 *af = n->af; 6790 prev = n; 6791 n = n->next; 6792 } 6793 } 6794 } 6795 6796 int 6797 invalid_redirect(struct node_host *nh, sa_family_t af) 6798 { 6799 if (!af) { 6800 struct node_host *n; 6801 6802 /* tables and dyniftl are ok without an address family */ 6803 for (n = nh; n != NULL; n = n->next) { 6804 if (n->addr.type != PF_ADDR_TABLE && 6805 n->addr.type != PF_ADDR_DYNIFTL) { 6806 yyerror("address family not given and " 6807 "translation address expands to multiple " 6808 "address families"); 6809 return (1); 6810 } 6811 } 6812 } 6813 if (nh == NULL) { 6814 yyerror("no translation address with matching address family " 6815 "found."); 6816 return (1); 6817 } 6818 return (0); 6819 } 6820 6821 int 6822 atoul(char *s, u_long *ulvalp) 6823 { 6824 u_long ulval; 6825 char *ep; 6826 6827 errno = 0; 6828 ulval = strtoul(s, &ep, 0); 6829 if (s[0] == '\0' || *ep != '\0') 6830 return (-1); 6831 if (errno == ERANGE && ulval == ULONG_MAX) 6832 return (-1); 6833 *ulvalp = ulval; 6834 return (0); 6835 } 6836 6837 int 6838 getservice(char *n) 6839 { 6840 struct servent *s; 6841 u_long ulval; 6842 6843 if (atoul(n, &ulval) == 0) { 6844 if (ulval > 65535) { 6845 yyerror("illegal port value %lu", ulval); 6846 return (-1); 6847 } 6848 return (htons(ulval)); 6849 } else { 6850 s = getservbyname(n, "tcp"); 6851 if (s == NULL) 6852 s = getservbyname(n, "udp"); 6853 if (s == NULL) { 6854 yyerror("unknown port %s", n); 6855 return (-1); 6856 } 6857 return (s->s_port); 6858 } 6859 } 6860 6861 int 6862 rule_label(struct pfctl_rule *r, char *s[PF_RULE_MAX_LABEL_COUNT]) 6863 { 6864 for (int i = 0; i < PF_RULE_MAX_LABEL_COUNT; i++) { 6865 if (s[i] == NULL) 6866 return (0); 6867 6868 if (strlcpy(r->label[i], s[i], sizeof(r->label[0])) >= 6869 sizeof(r->label[0])) { 6870 yyerror("rule label too long (max %d chars)", 6871 sizeof(r->label[0])-1); 6872 return (-1); 6873 } 6874 } 6875 return (0); 6876 } 6877 6878 u_int16_t 6879 parseicmpspec(char *w, sa_family_t af) 6880 { 6881 const struct icmpcodeent *p; 6882 u_long ulval; 6883 u_int8_t icmptype; 6884 6885 if (af == AF_INET) 6886 icmptype = returnicmpdefault >> 8; 6887 else 6888 icmptype = returnicmp6default >> 8; 6889 6890 if (atoul(w, &ulval) == -1) { 6891 if ((p = geticmpcodebyname(icmptype, w, af)) == NULL) { 6892 yyerror("unknown icmp code %s", w); 6893 return (0); 6894 } 6895 ulval = p->code; 6896 } 6897 if (ulval > 255) { 6898 yyerror("invalid icmp code %lu", ulval); 6899 return (0); 6900 } 6901 return (icmptype << 8 | ulval); 6902 } 6903 6904 int 6905 parseport(char *port, struct range *r, int extensions) 6906 { 6907 char *p = strchr(port, ':'); 6908 6909 if (p == NULL) { 6910 if ((r->a = getservice(port)) == -1) 6911 return (-1); 6912 r->b = 0; 6913 r->t = PF_OP_NONE; 6914 return (0); 6915 } 6916 if ((extensions & PPORT_STAR) && !strcmp(p+1, "*")) { 6917 *p = 0; 6918 if ((r->a = getservice(port)) == -1) 6919 return (-1); 6920 r->b = 0; 6921 r->t = PF_OP_IRG; 6922 return (0); 6923 } 6924 if ((extensions & PPORT_RANGE)) { 6925 *p++ = 0; 6926 if ((r->a = getservice(port)) == -1 || 6927 (r->b = getservice(p)) == -1) 6928 return (-1); 6929 if (r->a == r->b) { 6930 r->b = 0; 6931 r->t = PF_OP_NONE; 6932 } else 6933 r->t = PF_OP_RRG; 6934 return (0); 6935 } 6936 return (-1); 6937 } 6938 6939 int 6940 pfctl_load_anchors(int dev, struct pfctl *pf, struct pfr_buffer *trans) 6941 { 6942 struct loadanchors *la; 6943 6944 TAILQ_FOREACH(la, &loadanchorshead, entries) { 6945 if (pf->opts & PF_OPT_VERBOSE) 6946 fprintf(stderr, "\nLoading anchor %s from %s\n", 6947 la->anchorname, la->filename); 6948 if (pfctl_rules(dev, la->filename, pf->opts, pf->optimize, 6949 la->anchorname, trans) == -1) 6950 return (-1); 6951 } 6952 6953 return (0); 6954 } 6955 6956 int 6957 kw_casecmp(const void *k, const void *e) 6958 { 6959 return (strcasecmp(k, ((const struct keywords *)e)->k_name)); 6960 } 6961 6962 int 6963 map_tos(char *s, int *val) 6964 { 6965 /* DiffServ Codepoints and other TOS mappings */ 6966 const struct keywords toswords[] = { 6967 { "af11", IPTOS_DSCP_AF11 }, 6968 { "af12", IPTOS_DSCP_AF12 }, 6969 { "af13", IPTOS_DSCP_AF13 }, 6970 { "af21", IPTOS_DSCP_AF21 }, 6971 { "af22", IPTOS_DSCP_AF22 }, 6972 { "af23", IPTOS_DSCP_AF23 }, 6973 { "af31", IPTOS_DSCP_AF31 }, 6974 { "af32", IPTOS_DSCP_AF32 }, 6975 { "af33", IPTOS_DSCP_AF33 }, 6976 { "af41", IPTOS_DSCP_AF41 }, 6977 { "af42", IPTOS_DSCP_AF42 }, 6978 { "af43", IPTOS_DSCP_AF43 }, 6979 { "critical", IPTOS_PREC_CRITIC_ECP }, 6980 { "cs0", IPTOS_DSCP_CS0 }, 6981 { "cs1", IPTOS_DSCP_CS1 }, 6982 { "cs2", IPTOS_DSCP_CS2 }, 6983 { "cs3", IPTOS_DSCP_CS3 }, 6984 { "cs4", IPTOS_DSCP_CS4 }, 6985 { "cs5", IPTOS_DSCP_CS5 }, 6986 { "cs6", IPTOS_DSCP_CS6 }, 6987 { "cs7", IPTOS_DSCP_CS7 }, 6988 { "ef", IPTOS_DSCP_EF }, 6989 { "inetcontrol", IPTOS_PREC_INTERNETCONTROL }, 6990 { "lowdelay", IPTOS_LOWDELAY }, 6991 { "netcontrol", IPTOS_PREC_NETCONTROL }, 6992 { "reliability", IPTOS_RELIABILITY }, 6993 { "throughput", IPTOS_THROUGHPUT }, 6994 { "va", IPTOS_DSCP_VA } 6995 }; 6996 const struct keywords *p; 6997 6998 p = bsearch(s, toswords, sizeof(toswords)/sizeof(toswords[0]), 6999 sizeof(toswords[0]), kw_casecmp); 7000 7001 if (p) { 7002 *val = p->k_val; 7003 return (1); 7004 } 7005 return (0); 7006 } 7007 7008 int 7009 rt_tableid_max(void) 7010 { 7011 #ifdef __FreeBSD__ 7012 int fibs; 7013 size_t l = sizeof(fibs); 7014 7015 if (sysctlbyname("net.fibs", &fibs, &l, NULL, 0) == -1) 7016 fibs = 16; /* XXX RT_MAXFIBS, at least limit it some. */ 7017 /* 7018 * As the OpenBSD code only compares > and not >= we need to adjust 7019 * here given we only accept values of 0..n and want to avoid #ifdefs 7020 * in the grammar. 7021 */ 7022 return (fibs - 1); 7023 #else 7024 return (RT_TABLEID_MAX); 7025 #endif 7026 } 7027 7028 struct node_mac* 7029 node_mac_from_string(const char *str) 7030 { 7031 struct node_mac *m; 7032 7033 m = calloc(1, sizeof(struct node_mac)); 7034 if (m == NULL) 7035 err(1, "mac: calloc"); 7036 7037 if (sscanf(str, "%02hhx:%02hhx:%02hhx:%02hhx:%02hhx:%02hhx", 7038 &m->mac[0], &m->mac[1], &m->mac[2], &m->mac[3], &m->mac[4], 7039 &m->mac[5]) != 6) { 7040 free(m); 7041 yyerror("invalid MAC address"); 7042 return (NULL); 7043 } 7044 7045 memset(m->mask, 0xff, ETHER_ADDR_LEN); 7046 m->isset = true; 7047 m->next = NULL; 7048 m->tail = m; 7049 7050 return (m); 7051 } 7052 7053 struct node_mac* 7054 node_mac_from_string_masklen(const char *str, int masklen) 7055 { 7056 struct node_mac *m; 7057 7058 if (masklen < 0 || masklen > (ETHER_ADDR_LEN * 8)) { 7059 yyerror("invalid MAC mask length"); 7060 return (NULL); 7061 } 7062 7063 m = node_mac_from_string(str); 7064 if (m == NULL) 7065 return (NULL); 7066 7067 memset(m->mask, 0, ETHER_ADDR_LEN); 7068 for (int i = 0; i < masklen; i++) 7069 m->mask[i / 8] |= 1 << (i % 8); 7070 7071 return (m); 7072 } 7073 7074 struct node_mac* 7075 node_mac_from_string_mask(const char *str, const char *mask) 7076 { 7077 struct node_mac *m; 7078 7079 m = node_mac_from_string(str); 7080 if (m == NULL) 7081 return (NULL); 7082 7083 if (sscanf(mask, "%02hhx:%02hhx:%02hhx:%02hhx:%02hhx:%02hhx", 7084 &m->mask[0], &m->mask[1], &m->mask[2], &m->mask[3], &m->mask[4], 7085 &m->mask[5]) != 6) { 7086 free(m); 7087 yyerror("invalid MAC mask"); 7088 return (NULL); 7089 } 7090 7091 return (m); 7092 } 7093