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 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 NO REASSEMBLE { $$ = PFRULE_FRAGMENT_NOREASS; } 1533 ; 1534 1535 antispoof : ANTISPOOF logquick antispoof_ifspc af antispoof_opts { 1536 struct pfctl_rule r; 1537 struct node_host *h = NULL, *hh; 1538 struct node_if *i, *j; 1539 1540 if (check_rulestate(PFCTL_STATE_FILTER)) 1541 YYERROR; 1542 1543 for (i = $3; i; i = i->next) { 1544 bzero(&r, sizeof(r)); 1545 1546 r.action = PF_DROP; 1547 r.direction = PF_IN; 1548 r.log = $2.log; 1549 r.logif = $2.logif; 1550 r.quick = $2.quick; 1551 r.af = $4; 1552 r.ridentifier = $5.ridentifier; 1553 if (rule_label(&r, $5.label)) 1554 YYERROR; 1555 r.rtableid = $5.rtableid; 1556 j = calloc(1, sizeof(struct node_if)); 1557 if (j == NULL) 1558 err(1, "antispoof: calloc"); 1559 if (strlcpy(j->ifname, i->ifname, 1560 sizeof(j->ifname)) >= sizeof(j->ifname)) { 1561 free(j); 1562 yyerror("interface name too long"); 1563 YYERROR; 1564 } 1565 j->not = 1; 1566 if (i->dynamic) { 1567 h = calloc(1, sizeof(*h)); 1568 if (h == NULL) 1569 err(1, "address: calloc"); 1570 h->addr.type = PF_ADDR_DYNIFTL; 1571 set_ipmask(h, 128); 1572 if (strlcpy(h->addr.v.ifname, i->ifname, 1573 sizeof(h->addr.v.ifname)) >= 1574 sizeof(h->addr.v.ifname)) { 1575 free(h); 1576 yyerror( 1577 "interface name too long"); 1578 YYERROR; 1579 } 1580 hh = malloc(sizeof(*hh)); 1581 if (hh == NULL) 1582 err(1, "address: malloc"); 1583 bcopy(h, hh, sizeof(*hh)); 1584 h->addr.iflags = PFI_AFLAG_NETWORK; 1585 } else { 1586 h = ifa_lookup(j->ifname, 1587 PFI_AFLAG_NETWORK); 1588 hh = NULL; 1589 } 1590 1591 if (h != NULL) 1592 expand_rule(&r, j, NULL, NULL, NULL, h, 1593 NULL, NULL, NULL, NULL, NULL, 1594 NULL, ""); 1595 1596 if ((i->ifa_flags & IFF_LOOPBACK) == 0) { 1597 bzero(&r, sizeof(r)); 1598 1599 r.action = PF_DROP; 1600 r.direction = PF_IN; 1601 r.log = $2.log; 1602 r.logif = $2.logif; 1603 r.quick = $2.quick; 1604 r.af = $4; 1605 r.ridentifier = $5.ridentifier; 1606 if (rule_label(&r, $5.label)) 1607 YYERROR; 1608 r.rtableid = $5.rtableid; 1609 if (hh != NULL) 1610 h = hh; 1611 else 1612 h = ifa_lookup(i->ifname, 0); 1613 if (h != NULL) 1614 expand_rule(&r, NULL, NULL, 1615 NULL, NULL, h, NULL, NULL, 1616 NULL, NULL, NULL, NULL, ""); 1617 } else 1618 free(hh); 1619 } 1620 for (int i = 0; i < PF_RULE_MAX_LABEL_COUNT; i++) 1621 free($5.label[i]); 1622 } 1623 ; 1624 1625 antispoof_ifspc : FOR antispoof_if { $$ = $2; } 1626 | FOR '{' optnl antispoof_iflst '}' { $$ = $4; } 1627 ; 1628 1629 antispoof_iflst : antispoof_if optnl { $$ = $1; } 1630 | antispoof_iflst comma antispoof_if optnl { 1631 $1->tail->next = $3; 1632 $1->tail = $3; 1633 $$ = $1; 1634 } 1635 ; 1636 1637 antispoof_if : if_item { $$ = $1; } 1638 | '(' if_item ')' { 1639 $2->dynamic = 1; 1640 $$ = $2; 1641 } 1642 ; 1643 1644 antispoof_opts : { 1645 bzero(&antispoof_opts, sizeof antispoof_opts); 1646 antispoof_opts.rtableid = -1; 1647 } 1648 antispoof_opts_l 1649 { $$ = antispoof_opts; } 1650 | /* empty */ { 1651 bzero(&antispoof_opts, sizeof antispoof_opts); 1652 antispoof_opts.rtableid = -1; 1653 $$ = antispoof_opts; 1654 } 1655 ; 1656 1657 antispoof_opts_l : antispoof_opts_l antispoof_opt 1658 | antispoof_opt 1659 ; 1660 1661 antispoof_opt : label { 1662 if (antispoof_opts.labelcount >= PF_RULE_MAX_LABEL_COUNT) { 1663 yyerror("label can only be used %d times", PF_RULE_MAX_LABEL_COUNT); 1664 YYERROR; 1665 } 1666 antispoof_opts.label[antispoof_opts.labelcount++] = $1; 1667 } 1668 | RIDENTIFIER number { 1669 antispoof_opts.ridentifier = $2; 1670 } 1671 | RTABLE NUMBER { 1672 if ($2 < 0 || $2 > rt_tableid_max()) { 1673 yyerror("invalid rtable id"); 1674 YYERROR; 1675 } 1676 antispoof_opts.rtableid = $2; 1677 } 1678 ; 1679 1680 not : '!' { $$ = 1; } 1681 | /* empty */ { $$ = 0; } 1682 ; 1683 1684 tabledef : TABLE '<' STRING '>' table_opts { 1685 struct node_host *h, *nh; 1686 struct node_tinit *ti, *nti; 1687 1688 if (strlen($3) >= PF_TABLE_NAME_SIZE) { 1689 yyerror("table name too long, max %d chars", 1690 PF_TABLE_NAME_SIZE - 1); 1691 free($3); 1692 YYERROR; 1693 } 1694 if (pf->loadopt & PFCTL_FLAG_TABLE) 1695 if (process_tabledef($3, &$5)) { 1696 free($3); 1697 YYERROR; 1698 } 1699 free($3); 1700 for (ti = SIMPLEQ_FIRST(&$5.init_nodes); 1701 ti != SIMPLEQ_END(&$5.init_nodes); ti = nti) { 1702 if (ti->file) 1703 free(ti->file); 1704 for (h = ti->host; h != NULL; h = nh) { 1705 nh = h->next; 1706 free(h); 1707 } 1708 nti = SIMPLEQ_NEXT(ti, entries); 1709 free(ti); 1710 } 1711 } 1712 ; 1713 1714 table_opts : { 1715 bzero(&table_opts, sizeof table_opts); 1716 SIMPLEQ_INIT(&table_opts.init_nodes); 1717 } 1718 table_opts_l 1719 { $$ = table_opts; } 1720 | /* empty */ 1721 { 1722 bzero(&table_opts, sizeof table_opts); 1723 SIMPLEQ_INIT(&table_opts.init_nodes); 1724 $$ = table_opts; 1725 } 1726 ; 1727 1728 table_opts_l : table_opts_l table_opt 1729 | table_opt 1730 ; 1731 1732 table_opt : STRING { 1733 if (!strcmp($1, "const")) 1734 table_opts.flags |= PFR_TFLAG_CONST; 1735 else if (!strcmp($1, "persist")) 1736 table_opts.flags |= PFR_TFLAG_PERSIST; 1737 else if (!strcmp($1, "counters")) 1738 table_opts.flags |= PFR_TFLAG_COUNTERS; 1739 else { 1740 yyerror("invalid table option '%s'", $1); 1741 free($1); 1742 YYERROR; 1743 } 1744 free($1); 1745 } 1746 | '{' optnl '}' { table_opts.init_addr = 1; } 1747 | '{' optnl host_list '}' { 1748 struct node_host *n; 1749 struct node_tinit *ti; 1750 1751 for (n = $3; n != NULL; n = n->next) { 1752 switch (n->addr.type) { 1753 case PF_ADDR_ADDRMASK: 1754 continue; /* ok */ 1755 case PF_ADDR_RANGE: 1756 yyerror("address ranges are not " 1757 "permitted inside tables"); 1758 break; 1759 case PF_ADDR_DYNIFTL: 1760 yyerror("dynamic addresses are not " 1761 "permitted inside tables"); 1762 break; 1763 case PF_ADDR_TABLE: 1764 yyerror("tables cannot contain tables"); 1765 break; 1766 case PF_ADDR_NOROUTE: 1767 yyerror("\"no-route\" is not permitted " 1768 "inside tables"); 1769 break; 1770 case PF_ADDR_URPFFAILED: 1771 yyerror("\"urpf-failed\" is not " 1772 "permitted inside tables"); 1773 break; 1774 default: 1775 yyerror("unknown address type %d", 1776 n->addr.type); 1777 } 1778 YYERROR; 1779 } 1780 if (!(ti = calloc(1, sizeof(*ti)))) 1781 err(1, "table_opt: calloc"); 1782 ti->host = $3; 1783 SIMPLEQ_INSERT_TAIL(&table_opts.init_nodes, ti, 1784 entries); 1785 table_opts.init_addr = 1; 1786 } 1787 | FILENAME STRING { 1788 struct node_tinit *ti; 1789 1790 if (!(ti = calloc(1, sizeof(*ti)))) 1791 err(1, "table_opt: calloc"); 1792 ti->file = $2; 1793 SIMPLEQ_INSERT_TAIL(&table_opts.init_nodes, ti, 1794 entries); 1795 table_opts.init_addr = 1; 1796 } 1797 ; 1798 1799 altqif : ALTQ interface queue_opts QUEUE qassign { 1800 struct pf_altq a; 1801 1802 if (check_rulestate(PFCTL_STATE_QUEUE)) 1803 YYERROR; 1804 1805 memset(&a, 0, sizeof(a)); 1806 if ($3.scheduler.qtype == ALTQT_NONE) { 1807 yyerror("no scheduler specified!"); 1808 YYERROR; 1809 } 1810 a.scheduler = $3.scheduler.qtype; 1811 a.qlimit = $3.qlimit; 1812 a.tbrsize = $3.tbrsize; 1813 if ($5 == NULL && $3.scheduler.qtype != ALTQT_CODEL) { 1814 yyerror("no child queues specified"); 1815 YYERROR; 1816 } 1817 if (expand_altq(&a, $2, $5, $3.queue_bwspec, 1818 &$3.scheduler)) 1819 YYERROR; 1820 } 1821 ; 1822 1823 queuespec : QUEUE STRING interface queue_opts qassign { 1824 struct pf_altq a; 1825 1826 if (check_rulestate(PFCTL_STATE_QUEUE)) { 1827 free($2); 1828 YYERROR; 1829 } 1830 1831 memset(&a, 0, sizeof(a)); 1832 1833 if (strlcpy(a.qname, $2, sizeof(a.qname)) >= 1834 sizeof(a.qname)) { 1835 yyerror("queue name too long (max " 1836 "%d chars)", PF_QNAME_SIZE-1); 1837 free($2); 1838 YYERROR; 1839 } 1840 free($2); 1841 if ($4.tbrsize) { 1842 yyerror("cannot specify tbrsize for queue"); 1843 YYERROR; 1844 } 1845 if ($4.priority > 255) { 1846 yyerror("priority out of range: max 255"); 1847 YYERROR; 1848 } 1849 a.priority = $4.priority; 1850 a.qlimit = $4.qlimit; 1851 a.scheduler = $4.scheduler.qtype; 1852 if (expand_queue(&a, $3, $5, $4.queue_bwspec, 1853 &$4.scheduler)) { 1854 yyerror("errors in queue definition"); 1855 YYERROR; 1856 } 1857 } 1858 ; 1859 1860 queue_opts : { 1861 bzero(&queue_opts, sizeof queue_opts); 1862 queue_opts.priority = DEFAULT_PRIORITY; 1863 queue_opts.qlimit = DEFAULT_QLIMIT; 1864 queue_opts.scheduler.qtype = ALTQT_NONE; 1865 queue_opts.queue_bwspec.bw_percent = 100; 1866 } 1867 queue_opts_l 1868 { $$ = queue_opts; } 1869 | /* empty */ { 1870 bzero(&queue_opts, sizeof queue_opts); 1871 queue_opts.priority = DEFAULT_PRIORITY; 1872 queue_opts.qlimit = DEFAULT_QLIMIT; 1873 queue_opts.scheduler.qtype = ALTQT_NONE; 1874 queue_opts.queue_bwspec.bw_percent = 100; 1875 $$ = queue_opts; 1876 } 1877 ; 1878 1879 queue_opts_l : queue_opts_l queue_opt 1880 | queue_opt 1881 ; 1882 1883 queue_opt : BANDWIDTH bandwidth { 1884 if (queue_opts.marker & QOM_BWSPEC) { 1885 yyerror("bandwidth cannot be respecified"); 1886 YYERROR; 1887 } 1888 queue_opts.marker |= QOM_BWSPEC; 1889 queue_opts.queue_bwspec = $2; 1890 } 1891 | PRIORITY NUMBER { 1892 if (queue_opts.marker & QOM_PRIORITY) { 1893 yyerror("priority cannot be respecified"); 1894 YYERROR; 1895 } 1896 if ($2 < 0 || $2 > 255) { 1897 yyerror("priority out of range: max 255"); 1898 YYERROR; 1899 } 1900 queue_opts.marker |= QOM_PRIORITY; 1901 queue_opts.priority = $2; 1902 } 1903 | QLIMIT NUMBER { 1904 if (queue_opts.marker & QOM_QLIMIT) { 1905 yyerror("qlimit cannot be respecified"); 1906 YYERROR; 1907 } 1908 if ($2 < 0 || $2 > 65535) { 1909 yyerror("qlimit out of range: max 65535"); 1910 YYERROR; 1911 } 1912 queue_opts.marker |= QOM_QLIMIT; 1913 queue_opts.qlimit = $2; 1914 } 1915 | scheduler { 1916 if (queue_opts.marker & QOM_SCHEDULER) { 1917 yyerror("scheduler cannot be respecified"); 1918 YYERROR; 1919 } 1920 queue_opts.marker |= QOM_SCHEDULER; 1921 queue_opts.scheduler = $1; 1922 } 1923 | TBRSIZE NUMBER { 1924 if (queue_opts.marker & QOM_TBRSIZE) { 1925 yyerror("tbrsize cannot be respecified"); 1926 YYERROR; 1927 } 1928 if ($2 < 0 || $2 > UINT_MAX) { 1929 yyerror("tbrsize too big: max %u", UINT_MAX); 1930 YYERROR; 1931 } 1932 queue_opts.marker |= QOM_TBRSIZE; 1933 queue_opts.tbrsize = $2; 1934 } 1935 ; 1936 1937 bandwidth : STRING { 1938 double bps; 1939 char *cp; 1940 1941 $$.bw_percent = 0; 1942 1943 bps = strtod($1, &cp); 1944 if (cp != NULL) { 1945 if (strlen(cp) > 1) { 1946 char *cu = cp + 1; 1947 if (!strcmp(cu, "Bit") || 1948 !strcmp(cu, "B") || 1949 !strcmp(cu, "bit") || 1950 !strcmp(cu, "b")) { 1951 *cu = 0; 1952 } 1953 } 1954 if (!strcmp(cp, "b")) 1955 ; /* nothing */ 1956 else if (!strcmp(cp, "K")) 1957 bps *= 1000; 1958 else if (!strcmp(cp, "M")) 1959 bps *= 1000 * 1000; 1960 else if (!strcmp(cp, "G")) 1961 bps *= 1000 * 1000 * 1000; 1962 else if (!strcmp(cp, "%")) { 1963 if (bps < 0 || bps > 100) { 1964 yyerror("bandwidth spec " 1965 "out of range"); 1966 free($1); 1967 YYERROR; 1968 } 1969 $$.bw_percent = bps; 1970 bps = 0; 1971 } else { 1972 yyerror("unknown unit %s", cp); 1973 free($1); 1974 YYERROR; 1975 } 1976 } 1977 free($1); 1978 $$.bw_absolute = (u_int64_t)bps; 1979 } 1980 | NUMBER { 1981 if ($1 < 0 || $1 >= LLONG_MAX) { 1982 yyerror("bandwidth number too big"); 1983 YYERROR; 1984 } 1985 $$.bw_percent = 0; 1986 $$.bw_absolute = $1; 1987 } 1988 ; 1989 1990 scheduler : CBQ { 1991 $$.qtype = ALTQT_CBQ; 1992 $$.data.cbq_opts.flags = 0; 1993 } 1994 | CBQ '(' cbqflags_list ')' { 1995 $$.qtype = ALTQT_CBQ; 1996 $$.data.cbq_opts.flags = $3; 1997 } 1998 | PRIQ { 1999 $$.qtype = ALTQT_PRIQ; 2000 $$.data.priq_opts.flags = 0; 2001 } 2002 | PRIQ '(' priqflags_list ')' { 2003 $$.qtype = ALTQT_PRIQ; 2004 $$.data.priq_opts.flags = $3; 2005 } 2006 | HFSC { 2007 $$.qtype = ALTQT_HFSC; 2008 bzero(&$$.data.hfsc_opts, 2009 sizeof(struct node_hfsc_opts)); 2010 } 2011 | HFSC '(' hfsc_opts ')' { 2012 $$.qtype = ALTQT_HFSC; 2013 $$.data.hfsc_opts = $3; 2014 } 2015 | FAIRQ { 2016 $$.qtype = ALTQT_FAIRQ; 2017 bzero(&$$.data.fairq_opts, 2018 sizeof(struct node_fairq_opts)); 2019 } 2020 | FAIRQ '(' fairq_opts ')' { 2021 $$.qtype = ALTQT_FAIRQ; 2022 $$.data.fairq_opts = $3; 2023 } 2024 | CODEL { 2025 $$.qtype = ALTQT_CODEL; 2026 bzero(&$$.data.codel_opts, 2027 sizeof(struct codel_opts)); 2028 } 2029 | CODEL '(' codel_opts ')' { 2030 $$.qtype = ALTQT_CODEL; 2031 $$.data.codel_opts = $3; 2032 } 2033 ; 2034 2035 cbqflags_list : cbqflags_item { $$ |= $1; } 2036 | cbqflags_list comma cbqflags_item { $$ |= $3; } 2037 ; 2038 2039 cbqflags_item : STRING { 2040 if (!strcmp($1, "default")) 2041 $$ = CBQCLF_DEFCLASS; 2042 else if (!strcmp($1, "borrow")) 2043 $$ = CBQCLF_BORROW; 2044 else if (!strcmp($1, "red")) 2045 $$ = CBQCLF_RED; 2046 else if (!strcmp($1, "ecn")) 2047 $$ = CBQCLF_RED|CBQCLF_ECN; 2048 else if (!strcmp($1, "rio")) 2049 $$ = CBQCLF_RIO; 2050 else if (!strcmp($1, "codel")) 2051 $$ = CBQCLF_CODEL; 2052 else { 2053 yyerror("unknown cbq flag \"%s\"", $1); 2054 free($1); 2055 YYERROR; 2056 } 2057 free($1); 2058 } 2059 ; 2060 2061 priqflags_list : priqflags_item { $$ |= $1; } 2062 | priqflags_list comma priqflags_item { $$ |= $3; } 2063 ; 2064 2065 priqflags_item : STRING { 2066 if (!strcmp($1, "default")) 2067 $$ = PRCF_DEFAULTCLASS; 2068 else if (!strcmp($1, "red")) 2069 $$ = PRCF_RED; 2070 else if (!strcmp($1, "ecn")) 2071 $$ = PRCF_RED|PRCF_ECN; 2072 else if (!strcmp($1, "rio")) 2073 $$ = PRCF_RIO; 2074 else if (!strcmp($1, "codel")) 2075 $$ = PRCF_CODEL; 2076 else { 2077 yyerror("unknown priq flag \"%s\"", $1); 2078 free($1); 2079 YYERROR; 2080 } 2081 free($1); 2082 } 2083 ; 2084 2085 hfsc_opts : { 2086 bzero(&hfsc_opts, 2087 sizeof(struct node_hfsc_opts)); 2088 } 2089 hfscopts_list { 2090 $$ = hfsc_opts; 2091 } 2092 ; 2093 2094 hfscopts_list : hfscopts_item 2095 | hfscopts_list comma hfscopts_item 2096 ; 2097 2098 hfscopts_item : LINKSHARE bandwidth { 2099 if (hfsc_opts.linkshare.used) { 2100 yyerror("linkshare already specified"); 2101 YYERROR; 2102 } 2103 hfsc_opts.linkshare.m2 = $2; 2104 hfsc_opts.linkshare.used = 1; 2105 } 2106 | LINKSHARE '(' bandwidth comma NUMBER comma bandwidth ')' 2107 { 2108 if ($5 < 0 || $5 > INT_MAX) { 2109 yyerror("timing in curve out of range"); 2110 YYERROR; 2111 } 2112 if (hfsc_opts.linkshare.used) { 2113 yyerror("linkshare already specified"); 2114 YYERROR; 2115 } 2116 hfsc_opts.linkshare.m1 = $3; 2117 hfsc_opts.linkshare.d = $5; 2118 hfsc_opts.linkshare.m2 = $7; 2119 hfsc_opts.linkshare.used = 1; 2120 } 2121 | REALTIME bandwidth { 2122 if (hfsc_opts.realtime.used) { 2123 yyerror("realtime already specified"); 2124 YYERROR; 2125 } 2126 hfsc_opts.realtime.m2 = $2; 2127 hfsc_opts.realtime.used = 1; 2128 } 2129 | REALTIME '(' bandwidth comma NUMBER comma bandwidth ')' 2130 { 2131 if ($5 < 0 || $5 > INT_MAX) { 2132 yyerror("timing in curve out of range"); 2133 YYERROR; 2134 } 2135 if (hfsc_opts.realtime.used) { 2136 yyerror("realtime already specified"); 2137 YYERROR; 2138 } 2139 hfsc_opts.realtime.m1 = $3; 2140 hfsc_opts.realtime.d = $5; 2141 hfsc_opts.realtime.m2 = $7; 2142 hfsc_opts.realtime.used = 1; 2143 } 2144 | UPPERLIMIT bandwidth { 2145 if (hfsc_opts.upperlimit.used) { 2146 yyerror("upperlimit already specified"); 2147 YYERROR; 2148 } 2149 hfsc_opts.upperlimit.m2 = $2; 2150 hfsc_opts.upperlimit.used = 1; 2151 } 2152 | UPPERLIMIT '(' bandwidth comma NUMBER comma bandwidth ')' 2153 { 2154 if ($5 < 0 || $5 > INT_MAX) { 2155 yyerror("timing in curve out of range"); 2156 YYERROR; 2157 } 2158 if (hfsc_opts.upperlimit.used) { 2159 yyerror("upperlimit already specified"); 2160 YYERROR; 2161 } 2162 hfsc_opts.upperlimit.m1 = $3; 2163 hfsc_opts.upperlimit.d = $5; 2164 hfsc_opts.upperlimit.m2 = $7; 2165 hfsc_opts.upperlimit.used = 1; 2166 } 2167 | STRING { 2168 if (!strcmp($1, "default")) 2169 hfsc_opts.flags |= HFCF_DEFAULTCLASS; 2170 else if (!strcmp($1, "red")) 2171 hfsc_opts.flags |= HFCF_RED; 2172 else if (!strcmp($1, "ecn")) 2173 hfsc_opts.flags |= HFCF_RED|HFCF_ECN; 2174 else if (!strcmp($1, "rio")) 2175 hfsc_opts.flags |= HFCF_RIO; 2176 else if (!strcmp($1, "codel")) 2177 hfsc_opts.flags |= HFCF_CODEL; 2178 else { 2179 yyerror("unknown hfsc flag \"%s\"", $1); 2180 free($1); 2181 YYERROR; 2182 } 2183 free($1); 2184 } 2185 ; 2186 2187 fairq_opts : { 2188 bzero(&fairq_opts, 2189 sizeof(struct node_fairq_opts)); 2190 } 2191 fairqopts_list { 2192 $$ = fairq_opts; 2193 } 2194 ; 2195 2196 fairqopts_list : fairqopts_item 2197 | fairqopts_list comma fairqopts_item 2198 ; 2199 2200 fairqopts_item : LINKSHARE bandwidth { 2201 if (fairq_opts.linkshare.used) { 2202 yyerror("linkshare already specified"); 2203 YYERROR; 2204 } 2205 fairq_opts.linkshare.m2 = $2; 2206 fairq_opts.linkshare.used = 1; 2207 } 2208 | LINKSHARE '(' bandwidth number bandwidth ')' { 2209 if (fairq_opts.linkshare.used) { 2210 yyerror("linkshare already specified"); 2211 YYERROR; 2212 } 2213 fairq_opts.linkshare.m1 = $3; 2214 fairq_opts.linkshare.d = $4; 2215 fairq_opts.linkshare.m2 = $5; 2216 fairq_opts.linkshare.used = 1; 2217 } 2218 | HOGS bandwidth { 2219 fairq_opts.hogs_bw = $2; 2220 } 2221 | BUCKETS number { 2222 fairq_opts.nbuckets = $2; 2223 } 2224 | STRING { 2225 if (!strcmp($1, "default")) 2226 fairq_opts.flags |= FARF_DEFAULTCLASS; 2227 else if (!strcmp($1, "red")) 2228 fairq_opts.flags |= FARF_RED; 2229 else if (!strcmp($1, "ecn")) 2230 fairq_opts.flags |= FARF_RED|FARF_ECN; 2231 else if (!strcmp($1, "rio")) 2232 fairq_opts.flags |= FARF_RIO; 2233 else if (!strcmp($1, "codel")) 2234 fairq_opts.flags |= FARF_CODEL; 2235 else { 2236 yyerror("unknown fairq flag \"%s\"", $1); 2237 free($1); 2238 YYERROR; 2239 } 2240 free($1); 2241 } 2242 ; 2243 2244 codel_opts : { 2245 bzero(&codel_opts, 2246 sizeof(struct codel_opts)); 2247 } 2248 codelopts_list { 2249 $$ = codel_opts; 2250 } 2251 ; 2252 2253 codelopts_list : codelopts_item 2254 | codelopts_list comma codelopts_item 2255 ; 2256 2257 codelopts_item : INTERVAL number { 2258 if (codel_opts.interval) { 2259 yyerror("interval already specified"); 2260 YYERROR; 2261 } 2262 codel_opts.interval = $2; 2263 } 2264 | TARGET number { 2265 if (codel_opts.target) { 2266 yyerror("target already specified"); 2267 YYERROR; 2268 } 2269 codel_opts.target = $2; 2270 } 2271 | STRING { 2272 if (!strcmp($1, "ecn")) 2273 codel_opts.ecn = 1; 2274 else { 2275 yyerror("unknown codel option \"%s\"", $1); 2276 free($1); 2277 YYERROR; 2278 } 2279 free($1); 2280 } 2281 ; 2282 2283 qassign : /* empty */ { $$ = NULL; } 2284 | qassign_item { $$ = $1; } 2285 | '{' optnl qassign_list '}' { $$ = $3; } 2286 ; 2287 2288 qassign_list : qassign_item optnl { $$ = $1; } 2289 | qassign_list comma qassign_item optnl { 2290 $1->tail->next = $3; 2291 $1->tail = $3; 2292 $$ = $1; 2293 } 2294 ; 2295 2296 qassign_item : STRING { 2297 $$ = calloc(1, sizeof(struct node_queue)); 2298 if ($$ == NULL) 2299 err(1, "qassign_item: calloc"); 2300 if (strlcpy($$->queue, $1, sizeof($$->queue)) >= 2301 sizeof($$->queue)) { 2302 yyerror("queue name '%s' too long (max " 2303 "%d chars)", $1, sizeof($$->queue)-1); 2304 free($1); 2305 free($$); 2306 YYERROR; 2307 } 2308 free($1); 2309 $$->next = NULL; 2310 $$->tail = $$; 2311 } 2312 ; 2313 2314 pfrule : action dir logquick interface route af proto fromto 2315 filter_opts 2316 { 2317 struct pfctl_rule r; 2318 struct node_state_opt *o; 2319 struct node_proto *proto; 2320 int srctrack = 0; 2321 int statelock = 0; 2322 int adaptive = 0; 2323 int defaults = 0; 2324 2325 if (check_rulestate(PFCTL_STATE_FILTER)) 2326 YYERROR; 2327 2328 memset(&r, 0, sizeof(r)); 2329 2330 r.action = $1.b1; 2331 switch ($1.b2) { 2332 case PFRULE_RETURNRST: 2333 r.rule_flag |= PFRULE_RETURNRST; 2334 r.return_ttl = $1.w; 2335 break; 2336 case PFRULE_RETURNICMP: 2337 r.rule_flag |= PFRULE_RETURNICMP; 2338 r.return_icmp = $1.w; 2339 r.return_icmp6 = $1.w2; 2340 break; 2341 case PFRULE_RETURN: 2342 r.rule_flag |= PFRULE_RETURN; 2343 r.return_icmp = $1.w; 2344 r.return_icmp6 = $1.w2; 2345 break; 2346 } 2347 r.direction = $2; 2348 r.log = $3.log; 2349 r.logif = $3.logif; 2350 r.quick = $3.quick; 2351 r.prob = $9.prob; 2352 r.rtableid = $9.rtableid; 2353 2354 if ($9.marker & FOM_PRIO) { 2355 if ($9.prio == 0) 2356 r.prio = PF_PRIO_ZERO; 2357 else 2358 r.prio = $9.prio; 2359 } 2360 if ($9.marker & FOM_SETPRIO) { 2361 r.set_prio[0] = $9.set_prio[0]; 2362 r.set_prio[1] = $9.set_prio[1]; 2363 r.scrub_flags |= PFSTATE_SETPRIO; 2364 } 2365 2366 r.af = $6; 2367 if ($9.tag) 2368 if (strlcpy(r.tagname, $9.tag, 2369 PF_TAG_NAME_SIZE) >= PF_TAG_NAME_SIZE) { 2370 yyerror("tag too long, max %u chars", 2371 PF_TAG_NAME_SIZE - 1); 2372 YYERROR; 2373 } 2374 if ($9.match_tag) 2375 if (strlcpy(r.match_tagname, $9.match_tag, 2376 PF_TAG_NAME_SIZE) >= PF_TAG_NAME_SIZE) { 2377 yyerror("tag too long, max %u chars", 2378 PF_TAG_NAME_SIZE - 1); 2379 YYERROR; 2380 } 2381 r.match_tag_not = $9.match_tag_not; 2382 if (rule_label(&r, $9.label)) 2383 YYERROR; 2384 for (int i = 0; i < PF_RULE_MAX_LABEL_COUNT; i++) 2385 free($9.label[i]); 2386 r.ridentifier = $9.ridentifier; 2387 r.flags = $9.flags.b1; 2388 r.flagset = $9.flags.b2; 2389 if (($9.flags.b1 & $9.flags.b2) != $9.flags.b1) { 2390 yyerror("flags always false"); 2391 YYERROR; 2392 } 2393 if ($9.flags.b1 || $9.flags.b2 || $8.src_os) { 2394 for (proto = $7; proto != NULL && 2395 proto->proto != IPPROTO_TCP; 2396 proto = proto->next) 2397 ; /* nothing */ 2398 if (proto == NULL && $7 != NULL) { 2399 if ($9.flags.b1 || $9.flags.b2) 2400 yyerror( 2401 "flags only apply to tcp"); 2402 if ($8.src_os) 2403 yyerror( 2404 "OS fingerprinting only " 2405 "apply to tcp"); 2406 YYERROR; 2407 } 2408 #if 0 2409 if (($9.flags.b1 & parse_flags("S")) == 0 && 2410 $8.src_os) { 2411 yyerror("OS fingerprinting requires " 2412 "the SYN TCP flag (flags S/SA)"); 2413 YYERROR; 2414 } 2415 #endif 2416 } 2417 2418 r.tos = $9.tos; 2419 r.keep_state = $9.keep.action; 2420 o = $9.keep.options; 2421 2422 /* 'keep state' by default on pass rules. */ 2423 if (!r.keep_state && !r.action && 2424 !($9.marker & FOM_KEEP)) { 2425 r.keep_state = PF_STATE_NORMAL; 2426 o = keep_state_defaults; 2427 defaults = 1; 2428 } 2429 2430 while (o) { 2431 struct node_state_opt *p = o; 2432 2433 switch (o->type) { 2434 case PF_STATE_OPT_MAX: 2435 if (r.max_states) { 2436 yyerror("state option 'max' " 2437 "multiple definitions"); 2438 YYERROR; 2439 } 2440 r.max_states = o->data.max_states; 2441 break; 2442 case PF_STATE_OPT_NOSYNC: 2443 if (r.rule_flag & PFRULE_NOSYNC) { 2444 yyerror("state option 'sync' " 2445 "multiple definitions"); 2446 YYERROR; 2447 } 2448 r.rule_flag |= PFRULE_NOSYNC; 2449 break; 2450 case PF_STATE_OPT_SRCTRACK: 2451 if (srctrack) { 2452 yyerror("state option " 2453 "'source-track' " 2454 "multiple definitions"); 2455 YYERROR; 2456 } 2457 srctrack = o->data.src_track; 2458 r.rule_flag |= PFRULE_SRCTRACK; 2459 break; 2460 case PF_STATE_OPT_MAX_SRC_STATES: 2461 if (r.max_src_states) { 2462 yyerror("state option " 2463 "'max-src-states' " 2464 "multiple definitions"); 2465 YYERROR; 2466 } 2467 if (o->data.max_src_states == 0) { 2468 yyerror("'max-src-states' must " 2469 "be > 0"); 2470 YYERROR; 2471 } 2472 r.max_src_states = 2473 o->data.max_src_states; 2474 r.rule_flag |= PFRULE_SRCTRACK; 2475 break; 2476 case PF_STATE_OPT_OVERLOAD: 2477 if (r.overload_tblname[0]) { 2478 yyerror("multiple 'overload' " 2479 "table definitions"); 2480 YYERROR; 2481 } 2482 if (strlcpy(r.overload_tblname, 2483 o->data.overload.tblname, 2484 PF_TABLE_NAME_SIZE) >= 2485 PF_TABLE_NAME_SIZE) { 2486 yyerror("state option: " 2487 "strlcpy"); 2488 YYERROR; 2489 } 2490 r.flush = o->data.overload.flush; 2491 break; 2492 case PF_STATE_OPT_MAX_SRC_CONN: 2493 if (r.max_src_conn) { 2494 yyerror("state option " 2495 "'max-src-conn' " 2496 "multiple definitions"); 2497 YYERROR; 2498 } 2499 if (o->data.max_src_conn == 0) { 2500 yyerror("'max-src-conn' " 2501 "must be > 0"); 2502 YYERROR; 2503 } 2504 r.max_src_conn = 2505 o->data.max_src_conn; 2506 r.rule_flag |= PFRULE_SRCTRACK | 2507 PFRULE_RULESRCTRACK; 2508 break; 2509 case PF_STATE_OPT_MAX_SRC_CONN_RATE: 2510 if (r.max_src_conn_rate.limit) { 2511 yyerror("state option " 2512 "'max-src-conn-rate' " 2513 "multiple definitions"); 2514 YYERROR; 2515 } 2516 if (!o->data.max_src_conn_rate.limit || 2517 !o->data.max_src_conn_rate.seconds) { 2518 yyerror("'max-src-conn-rate' " 2519 "values must be > 0"); 2520 YYERROR; 2521 } 2522 if (o->data.max_src_conn_rate.limit > 2523 PF_THRESHOLD_MAX) { 2524 yyerror("'max-src-conn-rate' " 2525 "maximum rate must be < %u", 2526 PF_THRESHOLD_MAX); 2527 YYERROR; 2528 } 2529 r.max_src_conn_rate.limit = 2530 o->data.max_src_conn_rate.limit; 2531 r.max_src_conn_rate.seconds = 2532 o->data.max_src_conn_rate.seconds; 2533 r.rule_flag |= PFRULE_SRCTRACK | 2534 PFRULE_RULESRCTRACK; 2535 break; 2536 case PF_STATE_OPT_MAX_SRC_NODES: 2537 if (r.max_src_nodes) { 2538 yyerror("state option " 2539 "'max-src-nodes' " 2540 "multiple definitions"); 2541 YYERROR; 2542 } 2543 if (o->data.max_src_nodes == 0) { 2544 yyerror("'max-src-nodes' must " 2545 "be > 0"); 2546 YYERROR; 2547 } 2548 r.max_src_nodes = 2549 o->data.max_src_nodes; 2550 r.rule_flag |= PFRULE_SRCTRACK | 2551 PFRULE_RULESRCTRACK; 2552 break; 2553 case PF_STATE_OPT_STATELOCK: 2554 if (statelock) { 2555 yyerror("state locking option: " 2556 "multiple definitions"); 2557 YYERROR; 2558 } 2559 statelock = 1; 2560 r.rule_flag |= o->data.statelock; 2561 break; 2562 case PF_STATE_OPT_SLOPPY: 2563 if (r.rule_flag & PFRULE_STATESLOPPY) { 2564 yyerror("state sloppy option: " 2565 "multiple definitions"); 2566 YYERROR; 2567 } 2568 r.rule_flag |= PFRULE_STATESLOPPY; 2569 break; 2570 case PF_STATE_OPT_TIMEOUT: 2571 if (o->data.timeout.number == 2572 PFTM_ADAPTIVE_START || 2573 o->data.timeout.number == 2574 PFTM_ADAPTIVE_END) 2575 adaptive = 1; 2576 if (r.timeout[o->data.timeout.number]) { 2577 yyerror("state timeout %s " 2578 "multiple definitions", 2579 pf_timeouts[o->data. 2580 timeout.number].name); 2581 YYERROR; 2582 } 2583 r.timeout[o->data.timeout.number] = 2584 o->data.timeout.seconds; 2585 } 2586 o = o->next; 2587 if (!defaults) 2588 free(p); 2589 } 2590 2591 /* 'flags S/SA' by default on stateful rules */ 2592 if (!r.action && !r.flags && !r.flagset && 2593 !$9.fragment && !($9.marker & FOM_FLAGS) && 2594 r.keep_state) { 2595 r.flags = parse_flags("S"); 2596 r.flagset = parse_flags("SA"); 2597 } 2598 if (!adaptive && r.max_states) { 2599 r.timeout[PFTM_ADAPTIVE_START] = 2600 (r.max_states / 10) * 6; 2601 r.timeout[PFTM_ADAPTIVE_END] = 2602 (r.max_states / 10) * 12; 2603 } 2604 if (r.rule_flag & PFRULE_SRCTRACK) { 2605 if (srctrack == PF_SRCTRACK_GLOBAL && 2606 r.max_src_nodes) { 2607 yyerror("'max-src-nodes' is " 2608 "incompatible with " 2609 "'source-track global'"); 2610 YYERROR; 2611 } 2612 if (srctrack == PF_SRCTRACK_GLOBAL && 2613 r.max_src_conn) { 2614 yyerror("'max-src-conn' is " 2615 "incompatible with " 2616 "'source-track global'"); 2617 YYERROR; 2618 } 2619 if (srctrack == PF_SRCTRACK_GLOBAL && 2620 r.max_src_conn_rate.seconds) { 2621 yyerror("'max-src-conn-rate' is " 2622 "incompatible with " 2623 "'source-track global'"); 2624 YYERROR; 2625 } 2626 if (r.timeout[PFTM_SRC_NODE] < 2627 r.max_src_conn_rate.seconds) 2628 r.timeout[PFTM_SRC_NODE] = 2629 r.max_src_conn_rate.seconds; 2630 r.rule_flag |= PFRULE_SRCTRACK; 2631 if (srctrack == PF_SRCTRACK_RULE) 2632 r.rule_flag |= PFRULE_RULESRCTRACK; 2633 } 2634 if (r.keep_state && !statelock) 2635 r.rule_flag |= default_statelock; 2636 2637 if ($9.fragment) 2638 r.rule_flag |= PFRULE_FRAGMENT; 2639 r.allow_opts = $9.allowopts; 2640 2641 decide_address_family($8.src.host, &r.af); 2642 decide_address_family($8.dst.host, &r.af); 2643 2644 if ($5.rt) { 2645 if (!r.direction) { 2646 yyerror("direction must be explicit " 2647 "with rules that specify routing"); 2648 YYERROR; 2649 } 2650 r.rt = $5.rt; 2651 r.rpool.opts = $5.pool_opts; 2652 if ($5.key != NULL) 2653 memcpy(&r.rpool.key, $5.key, 2654 sizeof(struct pf_poolhashkey)); 2655 } 2656 if (r.rt) { 2657 decide_address_family($5.host, &r.af); 2658 remove_invalid_hosts(&$5.host, &r.af); 2659 if ($5.host == NULL) { 2660 yyerror("no routing address with " 2661 "matching address family found."); 2662 YYERROR; 2663 } 2664 if ((r.rpool.opts & PF_POOL_TYPEMASK) == 2665 PF_POOL_NONE && ($5.host->next != NULL || 2666 $5.host->addr.type == PF_ADDR_TABLE || 2667 DYNIF_MULTIADDR($5.host->addr))) 2668 r.rpool.opts |= PF_POOL_ROUNDROBIN; 2669 if ((r.rpool.opts & PF_POOL_TYPEMASK) != 2670 PF_POOL_ROUNDROBIN && 2671 disallow_table($5.host, "tables are only " 2672 "supported in round-robin routing pools")) 2673 YYERROR; 2674 if ((r.rpool.opts & PF_POOL_TYPEMASK) != 2675 PF_POOL_ROUNDROBIN && 2676 disallow_alias($5.host, "interface (%s) " 2677 "is only supported in round-robin " 2678 "routing pools")) 2679 YYERROR; 2680 if ($5.host->next != NULL) { 2681 if ((r.rpool.opts & PF_POOL_TYPEMASK) != 2682 PF_POOL_ROUNDROBIN) { 2683 yyerror("r.rpool.opts must " 2684 "be PF_POOL_ROUNDROBIN"); 2685 YYERROR; 2686 } 2687 } 2688 } 2689 if ($9.queues.qname != NULL) { 2690 if (strlcpy(r.qname, $9.queues.qname, 2691 sizeof(r.qname)) >= sizeof(r.qname)) { 2692 yyerror("rule qname too long (max " 2693 "%d chars)", sizeof(r.qname)-1); 2694 YYERROR; 2695 } 2696 free($9.queues.qname); 2697 } 2698 if ($9.queues.pqname != NULL) { 2699 if (strlcpy(r.pqname, $9.queues.pqname, 2700 sizeof(r.pqname)) >= sizeof(r.pqname)) { 2701 yyerror("rule pqname too long (max " 2702 "%d chars)", sizeof(r.pqname)-1); 2703 YYERROR; 2704 } 2705 free($9.queues.pqname); 2706 } 2707 #ifdef __FreeBSD__ 2708 r.divert.port = $9.divert.port; 2709 #else 2710 if ((r.divert.port = $9.divert.port)) { 2711 if (r.direction == PF_OUT) { 2712 if ($9.divert.addr) { 2713 yyerror("address specified " 2714 "for outgoing divert"); 2715 YYERROR; 2716 } 2717 bzero(&r.divert.addr, 2718 sizeof(r.divert.addr)); 2719 } else { 2720 if (!$9.divert.addr) { 2721 yyerror("no address specified " 2722 "for incoming divert"); 2723 YYERROR; 2724 } 2725 if ($9.divert.addr->af != r.af) { 2726 yyerror("address family " 2727 "mismatch for divert"); 2728 YYERROR; 2729 } 2730 r.divert.addr = 2731 $9.divert.addr->addr.v.a.addr; 2732 } 2733 } 2734 #endif 2735 2736 if ($9.dnpipe || $9.dnrpipe) { 2737 r.dnpipe = $9.dnpipe; 2738 r.dnrpipe = $9.dnrpipe; 2739 if ($9.free_flags & PFRULE_DN_IS_PIPE) 2740 r.free_flags |= PFRULE_DN_IS_PIPE; 2741 else 2742 r.free_flags |= PFRULE_DN_IS_QUEUE; 2743 } 2744 2745 expand_rule(&r, $4, $5.host, $7, $8.src_os, 2746 $8.src.host, $8.src.port, $8.dst.host, $8.dst.port, 2747 $9.uid, $9.gid, $9.icmpspec, ""); 2748 } 2749 ; 2750 2751 filter_opts : { 2752 bzero(&filter_opts, sizeof filter_opts); 2753 filter_opts.rtableid = -1; 2754 } 2755 filter_opts_l 2756 { $$ = filter_opts; } 2757 | /* empty */ { 2758 bzero(&filter_opts, sizeof filter_opts); 2759 filter_opts.rtableid = -1; 2760 $$ = filter_opts; 2761 } 2762 ; 2763 2764 filter_opts_l : filter_opts_l filter_opt 2765 | filter_opt 2766 ; 2767 2768 filter_opt : USER uids { 2769 if (filter_opts.uid) 2770 $2->tail->next = filter_opts.uid; 2771 filter_opts.uid = $2; 2772 } 2773 | GROUP gids { 2774 if (filter_opts.gid) 2775 $2->tail->next = filter_opts.gid; 2776 filter_opts.gid = $2; 2777 } 2778 | flags { 2779 if (filter_opts.marker & FOM_FLAGS) { 2780 yyerror("flags cannot be redefined"); 2781 YYERROR; 2782 } 2783 filter_opts.marker |= FOM_FLAGS; 2784 filter_opts.flags.b1 |= $1.b1; 2785 filter_opts.flags.b2 |= $1.b2; 2786 filter_opts.flags.w |= $1.w; 2787 filter_opts.flags.w2 |= $1.w2; 2788 } 2789 | icmpspec { 2790 if (filter_opts.marker & FOM_ICMP) { 2791 yyerror("icmp-type cannot be redefined"); 2792 YYERROR; 2793 } 2794 filter_opts.marker |= FOM_ICMP; 2795 filter_opts.icmpspec = $1; 2796 } 2797 | PRIO NUMBER { 2798 if (filter_opts.marker & FOM_PRIO) { 2799 yyerror("prio cannot be redefined"); 2800 YYERROR; 2801 } 2802 if ($2 < 0 || $2 > PF_PRIO_MAX) { 2803 yyerror("prio must be 0 - %u", PF_PRIO_MAX); 2804 YYERROR; 2805 } 2806 filter_opts.marker |= FOM_PRIO; 2807 filter_opts.prio = $2; 2808 } 2809 | TOS tos { 2810 if (filter_opts.marker & FOM_TOS) { 2811 yyerror("tos cannot be redefined"); 2812 YYERROR; 2813 } 2814 filter_opts.marker |= FOM_TOS; 2815 filter_opts.tos = $2; 2816 } 2817 | keep { 2818 if (filter_opts.marker & FOM_KEEP) { 2819 yyerror("modulate or keep cannot be redefined"); 2820 YYERROR; 2821 } 2822 filter_opts.marker |= FOM_KEEP; 2823 filter_opts.keep.action = $1.action; 2824 filter_opts.keep.options = $1.options; 2825 } 2826 | RIDENTIFIER number { 2827 filter_opts.ridentifier = $2; 2828 } 2829 | FRAGMENT { 2830 filter_opts.fragment = 1; 2831 } 2832 | ALLOWOPTS { 2833 filter_opts.allowopts = 1; 2834 } 2835 | label { 2836 if (filter_opts.labelcount >= PF_RULE_MAX_LABEL_COUNT) { 2837 yyerror("label can only be used %d times", PF_RULE_MAX_LABEL_COUNT); 2838 YYERROR; 2839 } 2840 filter_opts.label[filter_opts.labelcount++] = $1; 2841 } 2842 | qname { 2843 if (filter_opts.queues.qname) { 2844 yyerror("queue cannot be redefined"); 2845 YYERROR; 2846 } 2847 filter_opts.queues = $1; 2848 } 2849 | DNPIPE number { 2850 filter_opts.dnpipe = $2; 2851 filter_opts.free_flags |= PFRULE_DN_IS_PIPE; 2852 } 2853 | DNPIPE '(' number ')' { 2854 filter_opts.dnpipe = $3; 2855 filter_opts.free_flags |= PFRULE_DN_IS_PIPE; 2856 } 2857 | DNPIPE '(' number comma number ')' { 2858 filter_opts.dnrpipe = $5; 2859 filter_opts.dnpipe = $3; 2860 filter_opts.free_flags |= PFRULE_DN_IS_PIPE; 2861 } 2862 | DNQUEUE number { 2863 filter_opts.dnpipe = $2; 2864 filter_opts.free_flags |= PFRULE_DN_IS_QUEUE; 2865 } 2866 | DNQUEUE '(' number comma number ')' { 2867 filter_opts.dnrpipe = $5; 2868 filter_opts.dnpipe = $3; 2869 filter_opts.free_flags |= PFRULE_DN_IS_QUEUE; 2870 } 2871 | DNQUEUE '(' number ')' { 2872 filter_opts.dnpipe = $3; 2873 filter_opts.free_flags |= PFRULE_DN_IS_QUEUE; 2874 } 2875 | TAG string { 2876 filter_opts.tag = $2; 2877 } 2878 | not TAGGED string { 2879 filter_opts.match_tag = $3; 2880 filter_opts.match_tag_not = $1; 2881 } 2882 | PROBABILITY probability { 2883 double p; 2884 2885 p = floor($2 * UINT_MAX + 0.5); 2886 if (p < 0.0 || p > UINT_MAX) { 2887 yyerror("invalid probability: %lf", p); 2888 YYERROR; 2889 } 2890 filter_opts.prob = (u_int32_t)p; 2891 if (filter_opts.prob == 0) 2892 filter_opts.prob = 1; 2893 } 2894 | RTABLE NUMBER { 2895 if ($2 < 0 || $2 > rt_tableid_max()) { 2896 yyerror("invalid rtable id"); 2897 YYERROR; 2898 } 2899 filter_opts.rtableid = $2; 2900 } 2901 | DIVERTTO portplain { 2902 #ifdef __FreeBSD__ 2903 filter_opts.divert.port = $2.a; 2904 if (!filter_opts.divert.port) { 2905 yyerror("invalid divert port: %u", ntohs($2.a)); 2906 YYERROR; 2907 } 2908 #endif 2909 } 2910 | DIVERTTO STRING PORT portplain { 2911 #ifndef __FreeBSD__ 2912 if ((filter_opts.divert.addr = host($2)) == NULL) { 2913 yyerror("could not parse divert address: %s", 2914 $2); 2915 free($2); 2916 YYERROR; 2917 } 2918 #else 2919 if ($2) 2920 #endif 2921 free($2); 2922 filter_opts.divert.port = $4.a; 2923 if (!filter_opts.divert.port) { 2924 yyerror("invalid divert port: %u", ntohs($4.a)); 2925 YYERROR; 2926 } 2927 } 2928 | DIVERTREPLY { 2929 #ifdef __FreeBSD__ 2930 yyerror("divert-reply has no meaning in FreeBSD pf(4)"); 2931 YYERROR; 2932 #else 2933 filter_opts.divert.port = 1; /* some random value */ 2934 #endif 2935 } 2936 | filter_sets 2937 ; 2938 2939 filter_sets : SET '(' filter_sets_l ')' { $$ = filter_opts; } 2940 | SET filter_set { $$ = filter_opts; } 2941 ; 2942 2943 filter_sets_l : filter_sets_l comma filter_set 2944 | filter_set 2945 ; 2946 2947 filter_set : prio { 2948 if (filter_opts.marker & FOM_SETPRIO) { 2949 yyerror("prio cannot be redefined"); 2950 YYERROR; 2951 } 2952 filter_opts.marker |= FOM_SETPRIO; 2953 filter_opts.set_prio[0] = $1.b1; 2954 filter_opts.set_prio[1] = $1.b2; 2955 } 2956 prio : PRIO NUMBER { 2957 if ($2 < 0 || $2 > PF_PRIO_MAX) { 2958 yyerror("prio must be 0 - %u", PF_PRIO_MAX); 2959 YYERROR; 2960 } 2961 $$.b1 = $$.b2 = $2; 2962 } 2963 | PRIO '(' NUMBER comma NUMBER ')' { 2964 if ($3 < 0 || $3 > PF_PRIO_MAX || 2965 $5 < 0 || $5 > PF_PRIO_MAX) { 2966 yyerror("prio must be 0 - %u", PF_PRIO_MAX); 2967 YYERROR; 2968 } 2969 $$.b1 = $3; 2970 $$.b2 = $5; 2971 } 2972 ; 2973 2974 probability : STRING { 2975 char *e; 2976 double p = strtod($1, &e); 2977 2978 if (*e == '%') { 2979 p *= 0.01; 2980 e++; 2981 } 2982 if (*e) { 2983 yyerror("invalid probability: %s", $1); 2984 free($1); 2985 YYERROR; 2986 } 2987 free($1); 2988 $$ = p; 2989 } 2990 | NUMBER { 2991 $$ = (double)$1; 2992 } 2993 ; 2994 2995 2996 action : PASS { 2997 $$.b1 = PF_PASS; 2998 $$.b2 = failpolicy; 2999 $$.w = returnicmpdefault; 3000 $$.w2 = returnicmp6default; 3001 } 3002 | MATCH { $$.b1 = PF_MATCH; $$.b2 = $$.w = 0; } 3003 | BLOCK blockspec { $$ = $2; $$.b1 = PF_DROP; } 3004 ; 3005 3006 blockspec : /* empty */ { 3007 $$.b2 = blockpolicy; 3008 $$.w = returnicmpdefault; 3009 $$.w2 = returnicmp6default; 3010 } 3011 | DROP { 3012 $$.b2 = PFRULE_DROP; 3013 $$.w = 0; 3014 $$.w2 = 0; 3015 } 3016 | RETURNRST { 3017 $$.b2 = PFRULE_RETURNRST; 3018 $$.w = 0; 3019 $$.w2 = 0; 3020 } 3021 | RETURNRST '(' TTL NUMBER ')' { 3022 if ($4 < 0 || $4 > 255) { 3023 yyerror("illegal ttl value %d", $4); 3024 YYERROR; 3025 } 3026 $$.b2 = PFRULE_RETURNRST; 3027 $$.w = $4; 3028 $$.w2 = 0; 3029 } 3030 | RETURNICMP { 3031 $$.b2 = PFRULE_RETURNICMP; 3032 $$.w = returnicmpdefault; 3033 $$.w2 = returnicmp6default; 3034 } 3035 | RETURNICMP6 { 3036 $$.b2 = PFRULE_RETURNICMP; 3037 $$.w = returnicmpdefault; 3038 $$.w2 = returnicmp6default; 3039 } 3040 | RETURNICMP '(' reticmpspec ')' { 3041 $$.b2 = PFRULE_RETURNICMP; 3042 $$.w = $3; 3043 $$.w2 = returnicmpdefault; 3044 } 3045 | RETURNICMP6 '(' reticmp6spec ')' { 3046 $$.b2 = PFRULE_RETURNICMP; 3047 $$.w = returnicmpdefault; 3048 $$.w2 = $3; 3049 } 3050 | RETURNICMP '(' reticmpspec comma reticmp6spec ')' { 3051 $$.b2 = PFRULE_RETURNICMP; 3052 $$.w = $3; 3053 $$.w2 = $5; 3054 } 3055 | RETURN { 3056 $$.b2 = PFRULE_RETURN; 3057 $$.w = returnicmpdefault; 3058 $$.w2 = returnicmp6default; 3059 } 3060 ; 3061 3062 reticmpspec : STRING { 3063 if (!($$ = parseicmpspec($1, AF_INET))) { 3064 free($1); 3065 YYERROR; 3066 } 3067 free($1); 3068 } 3069 | NUMBER { 3070 u_int8_t icmptype; 3071 3072 if ($1 < 0 || $1 > 255) { 3073 yyerror("invalid icmp code %lu", $1); 3074 YYERROR; 3075 } 3076 icmptype = returnicmpdefault >> 8; 3077 $$ = (icmptype << 8 | $1); 3078 } 3079 ; 3080 3081 reticmp6spec : STRING { 3082 if (!($$ = parseicmpspec($1, AF_INET6))) { 3083 free($1); 3084 YYERROR; 3085 } 3086 free($1); 3087 } 3088 | NUMBER { 3089 u_int8_t icmptype; 3090 3091 if ($1 < 0 || $1 > 255) { 3092 yyerror("invalid icmp code %lu", $1); 3093 YYERROR; 3094 } 3095 icmptype = returnicmp6default >> 8; 3096 $$ = (icmptype << 8 | $1); 3097 } 3098 ; 3099 3100 dir : /* empty */ { $$ = PF_INOUT; } 3101 | IN { $$ = PF_IN; } 3102 | OUT { $$ = PF_OUT; } 3103 ; 3104 3105 quick : /* empty */ { $$.quick = 0; } 3106 | QUICK { $$.quick = 1; } 3107 ; 3108 3109 logquick : /* empty */ { $$.log = 0; $$.quick = 0; $$.logif = 0; } 3110 | log { $$ = $1; $$.quick = 0; } 3111 | QUICK { $$.quick = 1; $$.log = 0; $$.logif = 0; } 3112 | log QUICK { $$ = $1; $$.quick = 1; } 3113 | QUICK log { $$ = $2; $$.quick = 1; } 3114 ; 3115 3116 log : LOG { $$.log = PF_LOG; $$.logif = 0; } 3117 | LOG '(' logopts ')' { 3118 $$.log = PF_LOG | $3.log; 3119 $$.logif = $3.logif; 3120 } 3121 ; 3122 3123 logopts : logopt { $$ = $1; } 3124 | logopts comma logopt { 3125 $$.log = $1.log | $3.log; 3126 $$.logif = $3.logif; 3127 if ($$.logif == 0) 3128 $$.logif = $1.logif; 3129 } 3130 ; 3131 3132 logopt : ALL { $$.log = PF_LOG_ALL; $$.logif = 0; } 3133 | USER { $$.log = PF_LOG_SOCKET_LOOKUP; $$.logif = 0; } 3134 | GROUP { $$.log = PF_LOG_SOCKET_LOOKUP; $$.logif = 0; } 3135 | TO string { 3136 const char *errstr; 3137 u_int i; 3138 3139 $$.log = 0; 3140 if (strncmp($2, "pflog", 5)) { 3141 yyerror("%s: should be a pflog interface", $2); 3142 free($2); 3143 YYERROR; 3144 } 3145 i = strtonum($2 + 5, 0, 255, &errstr); 3146 if (errstr) { 3147 yyerror("%s: %s", $2, errstr); 3148 free($2); 3149 YYERROR; 3150 } 3151 free($2); 3152 $$.logif = i; 3153 } 3154 ; 3155 3156 interface : /* empty */ { $$ = NULL; } 3157 | ON if_item_not { $$ = $2; } 3158 | ON '{' optnl if_list '}' { $$ = $4; } 3159 ; 3160 3161 if_list : if_item_not optnl { $$ = $1; } 3162 | if_list comma if_item_not optnl { 3163 $1->tail->next = $3; 3164 $1->tail = $3; 3165 $$ = $1; 3166 } 3167 ; 3168 3169 if_item_not : not if_item { $$ = $2; $$->not = $1; } 3170 ; 3171 3172 if_item : STRING { 3173 struct node_host *n; 3174 3175 $$ = calloc(1, sizeof(struct node_if)); 3176 if ($$ == NULL) 3177 err(1, "if_item: calloc"); 3178 if (strlcpy($$->ifname, $1, sizeof($$->ifname)) >= 3179 sizeof($$->ifname)) { 3180 free($1); 3181 free($$); 3182 yyerror("interface name too long"); 3183 YYERROR; 3184 } 3185 3186 if ((n = ifa_exists($1)) != NULL) 3187 $$->ifa_flags = n->ifa_flags; 3188 3189 free($1); 3190 $$->not = 0; 3191 $$->next = NULL; 3192 $$->tail = $$; 3193 } 3194 ; 3195 3196 af : /* empty */ { $$ = 0; } 3197 | INET { $$ = AF_INET; } 3198 | INET6 { $$ = AF_INET6; } 3199 ; 3200 3201 etherproto : /* empty */ { $$ = NULL; } 3202 | PROTO etherproto_item { $$ = $2; } 3203 | PROTO '{' optnl etherproto_list '}' { $$ = $4; } 3204 ; 3205 3206 etherproto_list : etherproto_item optnl { $$ = $1; } 3207 | etherproto_list comma etherproto_item optnl { 3208 $1->tail->next = $3; 3209 $1->tail = $3; 3210 $$ = $1; 3211 } 3212 ; 3213 3214 etherproto_item : etherprotoval { 3215 u_int16_t pr; 3216 3217 pr = (u_int16_t)$1; 3218 if (pr == 0) { 3219 yyerror("proto 0 cannot be used"); 3220 YYERROR; 3221 } 3222 $$ = calloc(1, sizeof(struct node_proto)); 3223 if ($$ == NULL) 3224 err(1, "proto_item: calloc"); 3225 $$->proto = pr; 3226 $$->next = NULL; 3227 $$->tail = $$; 3228 } 3229 ; 3230 3231 etherprotoval : NUMBER { 3232 if ($1 < 0 || $1 > 65565) { 3233 yyerror("protocol outside range"); 3234 YYERROR; 3235 } 3236 } 3237 | STRING 3238 { 3239 if (!strncmp($1, "0x", 2)) { 3240 if (sscanf($1, "0x%4x", &$$) != 1) { 3241 free($1); 3242 yyerror("invalid EtherType hex"); 3243 YYERROR; 3244 } 3245 } else { 3246 yyerror("Symbolic EtherType not yet supported"); 3247 } 3248 } 3249 ; 3250 3251 proto : /* empty */ { $$ = NULL; } 3252 | PROTO proto_item { $$ = $2; } 3253 | PROTO '{' optnl proto_list '}' { $$ = $4; } 3254 ; 3255 3256 proto_list : proto_item optnl { $$ = $1; } 3257 | proto_list comma proto_item optnl { 3258 $1->tail->next = $3; 3259 $1->tail = $3; 3260 $$ = $1; 3261 } 3262 ; 3263 3264 proto_item : protoval { 3265 u_int8_t pr; 3266 3267 pr = (u_int8_t)$1; 3268 if (pr == 0) { 3269 yyerror("proto 0 cannot be used"); 3270 YYERROR; 3271 } 3272 $$ = calloc(1, sizeof(struct node_proto)); 3273 if ($$ == NULL) 3274 err(1, "proto_item: calloc"); 3275 $$->proto = pr; 3276 $$->next = NULL; 3277 $$->tail = $$; 3278 } 3279 ; 3280 3281 protoval : STRING { 3282 struct protoent *p; 3283 3284 p = getprotobyname($1); 3285 if (p == NULL) { 3286 yyerror("unknown protocol %s", $1); 3287 free($1); 3288 YYERROR; 3289 } 3290 $$ = p->p_proto; 3291 free($1); 3292 } 3293 | NUMBER { 3294 if ($1 < 0 || $1 > 255) { 3295 yyerror("protocol outside range"); 3296 YYERROR; 3297 } 3298 } 3299 ; 3300 3301 l3fromto : /* empty */ { 3302 bzero(&$$, sizeof($$)); 3303 } 3304 | L3 fromto { 3305 if ($2.src.host != NULL && 3306 $2.src.host->addr.type != PF_ADDR_ADDRMASK && 3307 $2.src.host->addr.type != PF_ADDR_TABLE) { 3308 yyerror("from must be an address or table"); 3309 YYERROR; 3310 } 3311 if ($2.dst.host != NULL && 3312 $2.dst.host->addr.type != PF_ADDR_ADDRMASK && 3313 $2.dst.host->addr.type != PF_ADDR_TABLE) { 3314 yyerror("to must be an address or table"); 3315 YYERROR; 3316 } 3317 $$ = $2; 3318 } 3319 ; 3320 etherfromto : ALL { 3321 $$.src = NULL; 3322 $$.dst = NULL; 3323 } 3324 | etherfrom etherto { 3325 $$.src = $1.mac; 3326 $$.dst = $2.mac; 3327 } 3328 ; 3329 3330 etherfrom : /* emtpy */ { 3331 bzero(&$$, sizeof($$)); 3332 } 3333 | FROM macspec { 3334 $$.mac = $2; 3335 } 3336 ; 3337 3338 etherto : /* empty */ { 3339 bzero(&$$, sizeof($$)); 3340 } 3341 | TO macspec { 3342 $$.mac = $2; 3343 } 3344 ; 3345 3346 mac : string '/' NUMBER { 3347 $$ = node_mac_from_string_masklen($1, $3); 3348 free($1); 3349 if ($$ == NULL) 3350 YYERROR; 3351 } 3352 | string { 3353 if (strchr($1, '&')) { 3354 /* mac&mask */ 3355 char *mac = strtok($1, "&"); 3356 char *mask = strtok(NULL, "&"); 3357 $$ = node_mac_from_string_mask(mac, mask); 3358 } else { 3359 $$ = node_mac_from_string($1); 3360 } 3361 free($1); 3362 if ($$ == NULL) 3363 YYERROR; 3364 3365 } 3366 xmac : not mac { 3367 struct node_mac *n; 3368 3369 for (n = $2; n != NULL; n = n->next) 3370 n->neg = $1; 3371 $$ = $2; 3372 } 3373 ; 3374 macspec : xmac { 3375 $$ = $1; 3376 } 3377 | '{' optnl mac_list '}' 3378 { 3379 $$ = $3; 3380 } 3381 ; 3382 mac_list : xmac optnl { 3383 $$ = $1; 3384 } 3385 | mac_list comma xmac { 3386 if ($3 == NULL) 3387 $$ = $1; 3388 else if ($1 == NULL) 3389 $$ = $3; 3390 else { 3391 $1->tail->next = $3; 3392 $1->tail = $3->tail; 3393 $$ = $1; 3394 } 3395 } 3396 3397 fromto : ALL { 3398 $$.src.host = NULL; 3399 $$.src.port = NULL; 3400 $$.dst.host = NULL; 3401 $$.dst.port = NULL; 3402 $$.src_os = NULL; 3403 } 3404 | from os to { 3405 $$.src = $1; 3406 $$.src_os = $2; 3407 $$.dst = $3; 3408 } 3409 ; 3410 3411 os : /* empty */ { $$ = NULL; } 3412 | OS xos { $$ = $2; } 3413 | OS '{' optnl os_list '}' { $$ = $4; } 3414 ; 3415 3416 xos : STRING { 3417 $$ = calloc(1, sizeof(struct node_os)); 3418 if ($$ == NULL) 3419 err(1, "os: calloc"); 3420 $$->os = $1; 3421 $$->tail = $$; 3422 } 3423 ; 3424 3425 os_list : xos optnl { $$ = $1; } 3426 | os_list comma xos optnl { 3427 $1->tail->next = $3; 3428 $1->tail = $3; 3429 $$ = $1; 3430 } 3431 ; 3432 3433 from : /* empty */ { 3434 $$.host = NULL; 3435 $$.port = NULL; 3436 } 3437 | FROM ipportspec { 3438 $$ = $2; 3439 } 3440 ; 3441 3442 to : /* empty */ { 3443 $$.host = NULL; 3444 $$.port = NULL; 3445 } 3446 | TO ipportspec { 3447 if (disallow_urpf_failed($2.host, "\"urpf-failed\" is " 3448 "not permitted in a destination address")) 3449 YYERROR; 3450 $$ = $2; 3451 } 3452 ; 3453 3454 ipportspec : ipspec { 3455 $$.host = $1; 3456 $$.port = NULL; 3457 } 3458 | ipspec PORT portspec { 3459 $$.host = $1; 3460 $$.port = $3; 3461 } 3462 | PORT portspec { 3463 $$.host = NULL; 3464 $$.port = $2; 3465 } 3466 ; 3467 3468 optnl : '\n' optnl 3469 | 3470 ; 3471 3472 ipspec : ANY { $$ = NULL; } 3473 | xhost { $$ = $1; } 3474 | '{' optnl host_list '}' { $$ = $3; } 3475 ; 3476 3477 toipspec : TO ipspec { $$ = $2; } 3478 | /* empty */ { $$ = NULL; } 3479 ; 3480 3481 host_list : ipspec optnl { $$ = $1; } 3482 | host_list comma ipspec optnl { 3483 if ($3 == NULL) 3484 $$ = $1; 3485 else if ($1 == NULL) 3486 $$ = $3; 3487 else { 3488 $1->tail->next = $3; 3489 $1->tail = $3->tail; 3490 $$ = $1; 3491 } 3492 } 3493 ; 3494 3495 xhost : not host { 3496 struct node_host *n; 3497 3498 for (n = $2; n != NULL; n = n->next) 3499 n->not = $1; 3500 $$ = $2; 3501 } 3502 | not NOROUTE { 3503 $$ = calloc(1, sizeof(struct node_host)); 3504 if ($$ == NULL) 3505 err(1, "xhost: calloc"); 3506 $$->addr.type = PF_ADDR_NOROUTE; 3507 $$->next = NULL; 3508 $$->not = $1; 3509 $$->tail = $$; 3510 } 3511 | not URPFFAILED { 3512 $$ = calloc(1, sizeof(struct node_host)); 3513 if ($$ == NULL) 3514 err(1, "xhost: calloc"); 3515 $$->addr.type = PF_ADDR_URPFFAILED; 3516 $$->next = NULL; 3517 $$->not = $1; 3518 $$->tail = $$; 3519 } 3520 ; 3521 3522 host : STRING { 3523 if (($$ = host($1)) == NULL) { 3524 /* error. "any" is handled elsewhere */ 3525 free($1); 3526 yyerror("could not parse host specification"); 3527 YYERROR; 3528 } 3529 free($1); 3530 3531 } 3532 | STRING '-' STRING { 3533 struct node_host *b, *e; 3534 3535 if ((b = host($1)) == NULL || (e = host($3)) == NULL) { 3536 free($1); 3537 free($3); 3538 yyerror("could not parse host specification"); 3539 YYERROR; 3540 } 3541 if (b->af != e->af || 3542 b->addr.type != PF_ADDR_ADDRMASK || 3543 e->addr.type != PF_ADDR_ADDRMASK || 3544 unmask(&b->addr.v.a.mask, b->af) != 3545 (b->af == AF_INET ? 32 : 128) || 3546 unmask(&e->addr.v.a.mask, e->af) != 3547 (e->af == AF_INET ? 32 : 128) || 3548 b->next != NULL || b->not || 3549 e->next != NULL || e->not) { 3550 free(b); 3551 free(e); 3552 free($1); 3553 free($3); 3554 yyerror("invalid address range"); 3555 YYERROR; 3556 } 3557 memcpy(&b->addr.v.a.mask, &e->addr.v.a.addr, 3558 sizeof(b->addr.v.a.mask)); 3559 b->addr.type = PF_ADDR_RANGE; 3560 $$ = b; 3561 free(e); 3562 free($1); 3563 free($3); 3564 } 3565 | STRING '/' NUMBER { 3566 char *buf; 3567 3568 if (asprintf(&buf, "%s/%lld", $1, (long long)$3) == -1) 3569 err(1, "host: asprintf"); 3570 free($1); 3571 if (($$ = host(buf)) == NULL) { 3572 /* error. "any" is handled elsewhere */ 3573 free(buf); 3574 yyerror("could not parse host specification"); 3575 YYERROR; 3576 } 3577 free(buf); 3578 } 3579 | NUMBER '/' NUMBER { 3580 char *buf; 3581 3582 /* ie. for 10/8 parsing */ 3583 #ifdef __FreeBSD__ 3584 if (asprintf(&buf, "%lld/%lld", (long long)$1, (long long)$3) == -1) 3585 #else 3586 if (asprintf(&buf, "%lld/%lld", $1, $3) == -1) 3587 #endif 3588 err(1, "host: asprintf"); 3589 if (($$ = host(buf)) == NULL) { 3590 /* error. "any" is handled elsewhere */ 3591 free(buf); 3592 yyerror("could not parse host specification"); 3593 YYERROR; 3594 } 3595 free(buf); 3596 } 3597 | dynaddr 3598 | dynaddr '/' NUMBER { 3599 struct node_host *n; 3600 3601 if ($3 < 0 || $3 > 128) { 3602 yyerror("bit number too big"); 3603 YYERROR; 3604 } 3605 $$ = $1; 3606 for (n = $1; n != NULL; n = n->next) 3607 set_ipmask(n, $3); 3608 } 3609 | '<' STRING '>' { 3610 if (strlen($2) >= PF_TABLE_NAME_SIZE) { 3611 yyerror("table name '%s' too long", $2); 3612 free($2); 3613 YYERROR; 3614 } 3615 $$ = calloc(1, sizeof(struct node_host)); 3616 if ($$ == NULL) 3617 err(1, "host: calloc"); 3618 $$->addr.type = PF_ADDR_TABLE; 3619 if (strlcpy($$->addr.v.tblname, $2, 3620 sizeof($$->addr.v.tblname)) >= 3621 sizeof($$->addr.v.tblname)) 3622 errx(1, "host: strlcpy"); 3623 free($2); 3624 $$->next = NULL; 3625 $$->tail = $$; 3626 } 3627 ; 3628 3629 number : NUMBER 3630 | STRING { 3631 u_long ulval; 3632 3633 if (atoul($1, &ulval) == -1) { 3634 yyerror("%s is not a number", $1); 3635 free($1); 3636 YYERROR; 3637 } else 3638 $$ = ulval; 3639 free($1); 3640 } 3641 ; 3642 3643 dynaddr : '(' STRING ')' { 3644 int flags = 0; 3645 char *p, *op; 3646 3647 op = $2; 3648 if (!isalpha(op[0])) { 3649 yyerror("invalid interface name '%s'", op); 3650 free(op); 3651 YYERROR; 3652 } 3653 while ((p = strrchr($2, ':')) != NULL) { 3654 if (!strcmp(p+1, "network")) 3655 flags |= PFI_AFLAG_NETWORK; 3656 else if (!strcmp(p+1, "broadcast")) 3657 flags |= PFI_AFLAG_BROADCAST; 3658 else if (!strcmp(p+1, "peer")) 3659 flags |= PFI_AFLAG_PEER; 3660 else if (!strcmp(p+1, "0")) 3661 flags |= PFI_AFLAG_NOALIAS; 3662 else { 3663 yyerror("interface %s has bad modifier", 3664 $2); 3665 free(op); 3666 YYERROR; 3667 } 3668 *p = '\0'; 3669 } 3670 if (flags & (flags - 1) & PFI_AFLAG_MODEMASK) { 3671 free(op); 3672 yyerror("illegal combination of " 3673 "interface modifiers"); 3674 YYERROR; 3675 } 3676 $$ = calloc(1, sizeof(struct node_host)); 3677 if ($$ == NULL) 3678 err(1, "address: calloc"); 3679 $$->af = 0; 3680 set_ipmask($$, 128); 3681 $$->addr.type = PF_ADDR_DYNIFTL; 3682 $$->addr.iflags = flags; 3683 if (strlcpy($$->addr.v.ifname, $2, 3684 sizeof($$->addr.v.ifname)) >= 3685 sizeof($$->addr.v.ifname)) { 3686 free(op); 3687 free($$); 3688 yyerror("interface name too long"); 3689 YYERROR; 3690 } 3691 free(op); 3692 $$->next = NULL; 3693 $$->tail = $$; 3694 } 3695 ; 3696 3697 portspec : port_item { $$ = $1; } 3698 | '{' optnl port_list '}' { $$ = $3; } 3699 ; 3700 3701 port_list : port_item optnl { $$ = $1; } 3702 | port_list comma port_item optnl { 3703 $1->tail->next = $3; 3704 $1->tail = $3; 3705 $$ = $1; 3706 } 3707 ; 3708 3709 port_item : portrange { 3710 $$ = calloc(1, sizeof(struct node_port)); 3711 if ($$ == NULL) 3712 err(1, "port_item: calloc"); 3713 $$->port[0] = $1.a; 3714 $$->port[1] = $1.b; 3715 if ($1.t) 3716 $$->op = PF_OP_RRG; 3717 else 3718 $$->op = PF_OP_EQ; 3719 $$->next = NULL; 3720 $$->tail = $$; 3721 } 3722 | unaryop portrange { 3723 if ($2.t) { 3724 yyerror("':' cannot be used with an other " 3725 "port operator"); 3726 YYERROR; 3727 } 3728 $$ = calloc(1, sizeof(struct node_port)); 3729 if ($$ == NULL) 3730 err(1, "port_item: calloc"); 3731 $$->port[0] = $2.a; 3732 $$->port[1] = $2.b; 3733 $$->op = $1; 3734 $$->next = NULL; 3735 $$->tail = $$; 3736 } 3737 | portrange PORTBINARY portrange { 3738 if ($1.t || $3.t) { 3739 yyerror("':' cannot be used with an other " 3740 "port operator"); 3741 YYERROR; 3742 } 3743 $$ = calloc(1, sizeof(struct node_port)); 3744 if ($$ == NULL) 3745 err(1, "port_item: calloc"); 3746 $$->port[0] = $1.a; 3747 $$->port[1] = $3.a; 3748 $$->op = $2; 3749 $$->next = NULL; 3750 $$->tail = $$; 3751 } 3752 ; 3753 3754 portplain : numberstring { 3755 if (parseport($1, &$$, 0) == -1) { 3756 free($1); 3757 YYERROR; 3758 } 3759 free($1); 3760 } 3761 ; 3762 3763 portrange : numberstring { 3764 if (parseport($1, &$$, PPORT_RANGE) == -1) { 3765 free($1); 3766 YYERROR; 3767 } 3768 free($1); 3769 } 3770 ; 3771 3772 uids : uid_item { $$ = $1; } 3773 | '{' optnl uid_list '}' { $$ = $3; } 3774 ; 3775 3776 uid_list : uid_item optnl { $$ = $1; } 3777 | uid_list comma uid_item optnl { 3778 $1->tail->next = $3; 3779 $1->tail = $3; 3780 $$ = $1; 3781 } 3782 ; 3783 3784 uid_item : uid { 3785 $$ = calloc(1, sizeof(struct node_uid)); 3786 if ($$ == NULL) 3787 err(1, "uid_item: calloc"); 3788 $$->uid[0] = $1; 3789 $$->uid[1] = $1; 3790 $$->op = PF_OP_EQ; 3791 $$->next = NULL; 3792 $$->tail = $$; 3793 } 3794 | unaryop uid { 3795 if ($2 == UID_MAX && $1 != PF_OP_EQ && $1 != PF_OP_NE) { 3796 yyerror("user unknown requires operator = or " 3797 "!="); 3798 YYERROR; 3799 } 3800 $$ = calloc(1, sizeof(struct node_uid)); 3801 if ($$ == NULL) 3802 err(1, "uid_item: calloc"); 3803 $$->uid[0] = $2; 3804 $$->uid[1] = $2; 3805 $$->op = $1; 3806 $$->next = NULL; 3807 $$->tail = $$; 3808 } 3809 | uid PORTBINARY uid { 3810 if ($1 == UID_MAX || $3 == UID_MAX) { 3811 yyerror("user unknown requires operator = or " 3812 "!="); 3813 YYERROR; 3814 } 3815 $$ = calloc(1, sizeof(struct node_uid)); 3816 if ($$ == NULL) 3817 err(1, "uid_item: calloc"); 3818 $$->uid[0] = $1; 3819 $$->uid[1] = $3; 3820 $$->op = $2; 3821 $$->next = NULL; 3822 $$->tail = $$; 3823 } 3824 ; 3825 3826 uid : STRING { 3827 if (!strcmp($1, "unknown")) 3828 $$ = UID_MAX; 3829 else { 3830 struct passwd *pw; 3831 3832 if ((pw = getpwnam($1)) == NULL) { 3833 yyerror("unknown user %s", $1); 3834 free($1); 3835 YYERROR; 3836 } 3837 $$ = pw->pw_uid; 3838 } 3839 free($1); 3840 } 3841 | NUMBER { 3842 if ($1 < 0 || $1 >= UID_MAX) { 3843 yyerror("illegal uid value %lu", $1); 3844 YYERROR; 3845 } 3846 $$ = $1; 3847 } 3848 ; 3849 3850 gids : gid_item { $$ = $1; } 3851 | '{' optnl gid_list '}' { $$ = $3; } 3852 ; 3853 3854 gid_list : gid_item optnl { $$ = $1; } 3855 | gid_list comma gid_item optnl { 3856 $1->tail->next = $3; 3857 $1->tail = $3; 3858 $$ = $1; 3859 } 3860 ; 3861 3862 gid_item : gid { 3863 $$ = calloc(1, sizeof(struct node_gid)); 3864 if ($$ == NULL) 3865 err(1, "gid_item: calloc"); 3866 $$->gid[0] = $1; 3867 $$->gid[1] = $1; 3868 $$->op = PF_OP_EQ; 3869 $$->next = NULL; 3870 $$->tail = $$; 3871 } 3872 | unaryop gid { 3873 if ($2 == GID_MAX && $1 != PF_OP_EQ && $1 != PF_OP_NE) { 3874 yyerror("group unknown requires operator = or " 3875 "!="); 3876 YYERROR; 3877 } 3878 $$ = calloc(1, sizeof(struct node_gid)); 3879 if ($$ == NULL) 3880 err(1, "gid_item: calloc"); 3881 $$->gid[0] = $2; 3882 $$->gid[1] = $2; 3883 $$->op = $1; 3884 $$->next = NULL; 3885 $$->tail = $$; 3886 } 3887 | gid PORTBINARY gid { 3888 if ($1 == GID_MAX || $3 == GID_MAX) { 3889 yyerror("group unknown requires operator = or " 3890 "!="); 3891 YYERROR; 3892 } 3893 $$ = calloc(1, sizeof(struct node_gid)); 3894 if ($$ == NULL) 3895 err(1, "gid_item: calloc"); 3896 $$->gid[0] = $1; 3897 $$->gid[1] = $3; 3898 $$->op = $2; 3899 $$->next = NULL; 3900 $$->tail = $$; 3901 } 3902 ; 3903 3904 gid : STRING { 3905 if (!strcmp($1, "unknown")) 3906 $$ = GID_MAX; 3907 else { 3908 struct group *grp; 3909 3910 if ((grp = getgrnam($1)) == NULL) { 3911 yyerror("unknown group %s", $1); 3912 free($1); 3913 YYERROR; 3914 } 3915 $$ = grp->gr_gid; 3916 } 3917 free($1); 3918 } 3919 | NUMBER { 3920 if ($1 < 0 || $1 >= GID_MAX) { 3921 yyerror("illegal gid value %lu", $1); 3922 YYERROR; 3923 } 3924 $$ = $1; 3925 } 3926 ; 3927 3928 flag : STRING { 3929 int f; 3930 3931 if ((f = parse_flags($1)) < 0) { 3932 yyerror("bad flags %s", $1); 3933 free($1); 3934 YYERROR; 3935 } 3936 free($1); 3937 $$.b1 = f; 3938 } 3939 ; 3940 3941 flags : FLAGS flag '/' flag { $$.b1 = $2.b1; $$.b2 = $4.b1; } 3942 | FLAGS '/' flag { $$.b1 = 0; $$.b2 = $3.b1; } 3943 | FLAGS ANY { $$.b1 = 0; $$.b2 = 0; } 3944 ; 3945 3946 icmpspec : ICMPTYPE icmp_item { $$ = $2; } 3947 | ICMPTYPE '{' optnl icmp_list '}' { $$ = $4; } 3948 | ICMP6TYPE icmp6_item { $$ = $2; } 3949 | ICMP6TYPE '{' optnl icmp6_list '}' { $$ = $4; } 3950 ; 3951 3952 icmp_list : icmp_item optnl { $$ = $1; } 3953 | icmp_list comma icmp_item optnl { 3954 $1->tail->next = $3; 3955 $1->tail = $3; 3956 $$ = $1; 3957 } 3958 ; 3959 3960 icmp6_list : icmp6_item optnl { $$ = $1; } 3961 | icmp6_list comma icmp6_item optnl { 3962 $1->tail->next = $3; 3963 $1->tail = $3; 3964 $$ = $1; 3965 } 3966 ; 3967 3968 icmp_item : icmptype { 3969 $$ = calloc(1, sizeof(struct node_icmp)); 3970 if ($$ == NULL) 3971 err(1, "icmp_item: calloc"); 3972 $$->type = $1; 3973 $$->code = 0; 3974 $$->proto = IPPROTO_ICMP; 3975 $$->next = NULL; 3976 $$->tail = $$; 3977 } 3978 | icmptype CODE STRING { 3979 const struct icmpcodeent *p; 3980 3981 if ((p = geticmpcodebyname($1-1, $3, AF_INET)) == NULL) { 3982 yyerror("unknown icmp-code %s", $3); 3983 free($3); 3984 YYERROR; 3985 } 3986 3987 free($3); 3988 $$ = calloc(1, sizeof(struct node_icmp)); 3989 if ($$ == NULL) 3990 err(1, "icmp_item: calloc"); 3991 $$->type = $1; 3992 $$->code = p->code + 1; 3993 $$->proto = IPPROTO_ICMP; 3994 $$->next = NULL; 3995 $$->tail = $$; 3996 } 3997 | icmptype CODE NUMBER { 3998 if ($3 < 0 || $3 > 255) { 3999 yyerror("illegal icmp-code %lu", $3); 4000 YYERROR; 4001 } 4002 $$ = calloc(1, sizeof(struct node_icmp)); 4003 if ($$ == NULL) 4004 err(1, "icmp_item: calloc"); 4005 $$->type = $1; 4006 $$->code = $3 + 1; 4007 $$->proto = IPPROTO_ICMP; 4008 $$->next = NULL; 4009 $$->tail = $$; 4010 } 4011 ; 4012 4013 icmp6_item : icmp6type { 4014 $$ = calloc(1, sizeof(struct node_icmp)); 4015 if ($$ == NULL) 4016 err(1, "icmp_item: calloc"); 4017 $$->type = $1; 4018 $$->code = 0; 4019 $$->proto = IPPROTO_ICMPV6; 4020 $$->next = NULL; 4021 $$->tail = $$; 4022 } 4023 | icmp6type CODE STRING { 4024 const struct icmpcodeent *p; 4025 4026 if ((p = geticmpcodebyname($1-1, $3, AF_INET6)) == NULL) { 4027 yyerror("unknown icmp6-code %s", $3); 4028 free($3); 4029 YYERROR; 4030 } 4031 free($3); 4032 4033 $$ = calloc(1, sizeof(struct node_icmp)); 4034 if ($$ == NULL) 4035 err(1, "icmp_item: calloc"); 4036 $$->type = $1; 4037 $$->code = p->code + 1; 4038 $$->proto = IPPROTO_ICMPV6; 4039 $$->next = NULL; 4040 $$->tail = $$; 4041 } 4042 | icmp6type CODE NUMBER { 4043 if ($3 < 0 || $3 > 255) { 4044 yyerror("illegal icmp-code %lu", $3); 4045 YYERROR; 4046 } 4047 $$ = calloc(1, sizeof(struct node_icmp)); 4048 if ($$ == NULL) 4049 err(1, "icmp_item: calloc"); 4050 $$->type = $1; 4051 $$->code = $3 + 1; 4052 $$->proto = IPPROTO_ICMPV6; 4053 $$->next = NULL; 4054 $$->tail = $$; 4055 } 4056 ; 4057 4058 icmptype : STRING { 4059 const struct icmptypeent *p; 4060 4061 if ((p = geticmptypebyname($1, AF_INET)) == NULL) { 4062 yyerror("unknown icmp-type %s", $1); 4063 free($1); 4064 YYERROR; 4065 } 4066 $$ = p->type + 1; 4067 free($1); 4068 } 4069 | NUMBER { 4070 if ($1 < 0 || $1 > 255) { 4071 yyerror("illegal icmp-type %lu", $1); 4072 YYERROR; 4073 } 4074 $$ = $1 + 1; 4075 } 4076 ; 4077 4078 icmp6type : STRING { 4079 const struct icmptypeent *p; 4080 4081 if ((p = geticmptypebyname($1, AF_INET6)) == 4082 NULL) { 4083 yyerror("unknown icmp6-type %s", $1); 4084 free($1); 4085 YYERROR; 4086 } 4087 $$ = p->type + 1; 4088 free($1); 4089 } 4090 | NUMBER { 4091 if ($1 < 0 || $1 > 255) { 4092 yyerror("illegal icmp6-type %lu", $1); 4093 YYERROR; 4094 } 4095 $$ = $1 + 1; 4096 } 4097 ; 4098 4099 tos : STRING { 4100 int val; 4101 char *end; 4102 4103 if (map_tos($1, &val)) 4104 $$ = val; 4105 else if ($1[0] == '0' && $1[1] == 'x') { 4106 errno = 0; 4107 $$ = strtoul($1, &end, 16); 4108 if (errno || *end != '\0') 4109 $$ = 256; 4110 } else 4111 $$ = 256; /* flag bad argument */ 4112 if ($$ < 0 || $$ > 255) { 4113 yyerror("illegal tos value %s", $1); 4114 free($1); 4115 YYERROR; 4116 } 4117 free($1); 4118 } 4119 | NUMBER { 4120 $$ = $1; 4121 if ($$ < 0 || $$ > 255) { 4122 yyerror("illegal tos value %s", $1); 4123 YYERROR; 4124 } 4125 } 4126 ; 4127 4128 sourcetrack : SOURCETRACK { $$ = PF_SRCTRACK; } 4129 | SOURCETRACK GLOBAL { $$ = PF_SRCTRACK_GLOBAL; } 4130 | SOURCETRACK RULE { $$ = PF_SRCTRACK_RULE; } 4131 ; 4132 4133 statelock : IFBOUND { 4134 $$ = PFRULE_IFBOUND; 4135 } 4136 | FLOATING { 4137 $$ = 0; 4138 } 4139 ; 4140 4141 keep : NO STATE { 4142 $$.action = 0; 4143 $$.options = NULL; 4144 } 4145 | KEEP STATE state_opt_spec { 4146 $$.action = PF_STATE_NORMAL; 4147 $$.options = $3; 4148 } 4149 | MODULATE STATE state_opt_spec { 4150 $$.action = PF_STATE_MODULATE; 4151 $$.options = $3; 4152 } 4153 | SYNPROXY STATE state_opt_spec { 4154 $$.action = PF_STATE_SYNPROXY; 4155 $$.options = $3; 4156 } 4157 ; 4158 4159 flush : /* empty */ { $$ = 0; } 4160 | FLUSH { $$ = PF_FLUSH; } 4161 | FLUSH GLOBAL { 4162 $$ = PF_FLUSH | PF_FLUSH_GLOBAL; 4163 } 4164 ; 4165 4166 state_opt_spec : '(' state_opt_list ')' { $$ = $2; } 4167 | /* empty */ { $$ = NULL; } 4168 ; 4169 4170 state_opt_list : state_opt_item { $$ = $1; } 4171 | state_opt_list comma state_opt_item { 4172 $1->tail->next = $3; 4173 $1->tail = $3; 4174 $$ = $1; 4175 } 4176 ; 4177 4178 state_opt_item : MAXIMUM NUMBER { 4179 if ($2 < 0 || $2 > UINT_MAX) { 4180 yyerror("only positive values permitted"); 4181 YYERROR; 4182 } 4183 $$ = calloc(1, sizeof(struct node_state_opt)); 4184 if ($$ == NULL) 4185 err(1, "state_opt_item: calloc"); 4186 $$->type = PF_STATE_OPT_MAX; 4187 $$->data.max_states = $2; 4188 $$->next = NULL; 4189 $$->tail = $$; 4190 } 4191 | NOSYNC { 4192 $$ = calloc(1, sizeof(struct node_state_opt)); 4193 if ($$ == NULL) 4194 err(1, "state_opt_item: calloc"); 4195 $$->type = PF_STATE_OPT_NOSYNC; 4196 $$->next = NULL; 4197 $$->tail = $$; 4198 } 4199 | MAXSRCSTATES NUMBER { 4200 if ($2 < 0 || $2 > UINT_MAX) { 4201 yyerror("only positive values permitted"); 4202 YYERROR; 4203 } 4204 $$ = calloc(1, sizeof(struct node_state_opt)); 4205 if ($$ == NULL) 4206 err(1, "state_opt_item: calloc"); 4207 $$->type = PF_STATE_OPT_MAX_SRC_STATES; 4208 $$->data.max_src_states = $2; 4209 $$->next = NULL; 4210 $$->tail = $$; 4211 } 4212 | MAXSRCCONN NUMBER { 4213 if ($2 < 0 || $2 > UINT_MAX) { 4214 yyerror("only positive values permitted"); 4215 YYERROR; 4216 } 4217 $$ = calloc(1, sizeof(struct node_state_opt)); 4218 if ($$ == NULL) 4219 err(1, "state_opt_item: calloc"); 4220 $$->type = PF_STATE_OPT_MAX_SRC_CONN; 4221 $$->data.max_src_conn = $2; 4222 $$->next = NULL; 4223 $$->tail = $$; 4224 } 4225 | MAXSRCCONNRATE NUMBER '/' NUMBER { 4226 if ($2 < 0 || $2 > UINT_MAX || 4227 $4 < 0 || $4 > UINT_MAX) { 4228 yyerror("only positive values permitted"); 4229 YYERROR; 4230 } 4231 $$ = calloc(1, sizeof(struct node_state_opt)); 4232 if ($$ == NULL) 4233 err(1, "state_opt_item: calloc"); 4234 $$->type = PF_STATE_OPT_MAX_SRC_CONN_RATE; 4235 $$->data.max_src_conn_rate.limit = $2; 4236 $$->data.max_src_conn_rate.seconds = $4; 4237 $$->next = NULL; 4238 $$->tail = $$; 4239 } 4240 | OVERLOAD '<' STRING '>' flush { 4241 if (strlen($3) >= PF_TABLE_NAME_SIZE) { 4242 yyerror("table name '%s' too long", $3); 4243 free($3); 4244 YYERROR; 4245 } 4246 $$ = calloc(1, sizeof(struct node_state_opt)); 4247 if ($$ == NULL) 4248 err(1, "state_opt_item: calloc"); 4249 if (strlcpy($$->data.overload.tblname, $3, 4250 PF_TABLE_NAME_SIZE) >= PF_TABLE_NAME_SIZE) 4251 errx(1, "state_opt_item: strlcpy"); 4252 free($3); 4253 $$->type = PF_STATE_OPT_OVERLOAD; 4254 $$->data.overload.flush = $5; 4255 $$->next = NULL; 4256 $$->tail = $$; 4257 } 4258 | MAXSRCNODES NUMBER { 4259 if ($2 < 0 || $2 > UINT_MAX) { 4260 yyerror("only positive values permitted"); 4261 YYERROR; 4262 } 4263 $$ = calloc(1, sizeof(struct node_state_opt)); 4264 if ($$ == NULL) 4265 err(1, "state_opt_item: calloc"); 4266 $$->type = PF_STATE_OPT_MAX_SRC_NODES; 4267 $$->data.max_src_nodes = $2; 4268 $$->next = NULL; 4269 $$->tail = $$; 4270 } 4271 | sourcetrack { 4272 $$ = calloc(1, sizeof(struct node_state_opt)); 4273 if ($$ == NULL) 4274 err(1, "state_opt_item: calloc"); 4275 $$->type = PF_STATE_OPT_SRCTRACK; 4276 $$->data.src_track = $1; 4277 $$->next = NULL; 4278 $$->tail = $$; 4279 } 4280 | statelock { 4281 $$ = calloc(1, sizeof(struct node_state_opt)); 4282 if ($$ == NULL) 4283 err(1, "state_opt_item: calloc"); 4284 $$->type = PF_STATE_OPT_STATELOCK; 4285 $$->data.statelock = $1; 4286 $$->next = NULL; 4287 $$->tail = $$; 4288 } 4289 | SLOPPY { 4290 $$ = calloc(1, sizeof(struct node_state_opt)); 4291 if ($$ == NULL) 4292 err(1, "state_opt_item: calloc"); 4293 $$->type = PF_STATE_OPT_SLOPPY; 4294 $$->next = NULL; 4295 $$->tail = $$; 4296 } 4297 | STRING NUMBER { 4298 int i; 4299 4300 if ($2 < 0 || $2 > UINT_MAX) { 4301 yyerror("only positive values permitted"); 4302 YYERROR; 4303 } 4304 for (i = 0; pf_timeouts[i].name && 4305 strcmp(pf_timeouts[i].name, $1); ++i) 4306 ; /* nothing */ 4307 if (!pf_timeouts[i].name) { 4308 yyerror("illegal timeout name %s", $1); 4309 free($1); 4310 YYERROR; 4311 } 4312 if (strchr(pf_timeouts[i].name, '.') == NULL) { 4313 yyerror("illegal state timeout %s", $1); 4314 free($1); 4315 YYERROR; 4316 } 4317 free($1); 4318 $$ = calloc(1, sizeof(struct node_state_opt)); 4319 if ($$ == NULL) 4320 err(1, "state_opt_item: calloc"); 4321 $$->type = PF_STATE_OPT_TIMEOUT; 4322 $$->data.timeout.number = pf_timeouts[i].timeout; 4323 $$->data.timeout.seconds = $2; 4324 $$->next = NULL; 4325 $$->tail = $$; 4326 } 4327 ; 4328 4329 label : LABEL STRING { 4330 $$ = $2; 4331 } 4332 ; 4333 4334 etherqname : QUEUE STRING { 4335 $$.qname = $2; 4336 } 4337 | QUEUE '(' STRING ')' { 4338 $$.qname = $3; 4339 } 4340 ; 4341 4342 qname : QUEUE STRING { 4343 $$.qname = $2; 4344 $$.pqname = NULL; 4345 } 4346 | QUEUE '(' STRING ')' { 4347 $$.qname = $3; 4348 $$.pqname = NULL; 4349 } 4350 | QUEUE '(' STRING comma STRING ')' { 4351 $$.qname = $3; 4352 $$.pqname = $5; 4353 } 4354 ; 4355 4356 no : /* empty */ { $$ = 0; } 4357 | NO { $$ = 1; } 4358 ; 4359 4360 portstar : numberstring { 4361 if (parseport($1, &$$, PPORT_RANGE|PPORT_STAR) == -1) { 4362 free($1); 4363 YYERROR; 4364 } 4365 free($1); 4366 } 4367 ; 4368 4369 redirspec : host { $$ = $1; } 4370 | '{' optnl redir_host_list '}' { $$ = $3; } 4371 ; 4372 4373 redir_host_list : host optnl { $$ = $1; } 4374 | redir_host_list comma host optnl { 4375 $1->tail->next = $3; 4376 $1->tail = $3->tail; 4377 $$ = $1; 4378 } 4379 ; 4380 4381 redirpool : /* empty */ { $$ = NULL; } 4382 | ARROW redirspec { 4383 $$ = calloc(1, sizeof(struct redirection)); 4384 if ($$ == NULL) 4385 err(1, "redirection: calloc"); 4386 $$->host = $2; 4387 $$->rport.a = $$->rport.b = $$->rport.t = 0; 4388 } 4389 | ARROW redirspec PORT portstar { 4390 $$ = calloc(1, sizeof(struct redirection)); 4391 if ($$ == NULL) 4392 err(1, "redirection: calloc"); 4393 $$->host = $2; 4394 $$->rport = $4; 4395 } 4396 ; 4397 4398 hashkey : /* empty */ 4399 { 4400 $$ = calloc(1, sizeof(struct pf_poolhashkey)); 4401 if ($$ == NULL) 4402 err(1, "hashkey: calloc"); 4403 $$->key32[0] = arc4random(); 4404 $$->key32[1] = arc4random(); 4405 $$->key32[2] = arc4random(); 4406 $$->key32[3] = arc4random(); 4407 } 4408 | string 4409 { 4410 if (!strncmp($1, "0x", 2)) { 4411 if (strlen($1) != 34) { 4412 free($1); 4413 yyerror("hex key must be 128 bits " 4414 "(32 hex digits) long"); 4415 YYERROR; 4416 } 4417 $$ = calloc(1, sizeof(struct pf_poolhashkey)); 4418 if ($$ == NULL) 4419 err(1, "hashkey: calloc"); 4420 4421 if (sscanf($1, "0x%8x%8x%8x%8x", 4422 &$$->key32[0], &$$->key32[1], 4423 &$$->key32[2], &$$->key32[3]) != 4) { 4424 free($$); 4425 free($1); 4426 yyerror("invalid hex key"); 4427 YYERROR; 4428 } 4429 } else { 4430 MD5_CTX context; 4431 4432 $$ = calloc(1, sizeof(struct pf_poolhashkey)); 4433 if ($$ == NULL) 4434 err(1, "hashkey: calloc"); 4435 MD5Init(&context); 4436 MD5Update(&context, (unsigned char *)$1, 4437 strlen($1)); 4438 MD5Final((unsigned char *)$$, &context); 4439 HTONL($$->key32[0]); 4440 HTONL($$->key32[1]); 4441 HTONL($$->key32[2]); 4442 HTONL($$->key32[3]); 4443 } 4444 free($1); 4445 } 4446 ; 4447 4448 pool_opts : { bzero(&pool_opts, sizeof pool_opts); } 4449 pool_opts_l 4450 { $$ = pool_opts; } 4451 | /* empty */ { 4452 bzero(&pool_opts, sizeof pool_opts); 4453 $$ = pool_opts; 4454 } 4455 ; 4456 4457 pool_opts_l : pool_opts_l pool_opt 4458 | pool_opt 4459 ; 4460 4461 pool_opt : BITMASK { 4462 if (pool_opts.type) { 4463 yyerror("pool type cannot be redefined"); 4464 YYERROR; 4465 } 4466 pool_opts.type = PF_POOL_BITMASK; 4467 } 4468 | RANDOM { 4469 if (pool_opts.type) { 4470 yyerror("pool type cannot be redefined"); 4471 YYERROR; 4472 } 4473 pool_opts.type = PF_POOL_RANDOM; 4474 } 4475 | SOURCEHASH hashkey { 4476 if (pool_opts.type) { 4477 yyerror("pool type cannot be redefined"); 4478 YYERROR; 4479 } 4480 pool_opts.type = PF_POOL_SRCHASH; 4481 pool_opts.key = $2; 4482 } 4483 | ROUNDROBIN { 4484 if (pool_opts.type) { 4485 yyerror("pool type cannot be redefined"); 4486 YYERROR; 4487 } 4488 pool_opts.type = PF_POOL_ROUNDROBIN; 4489 } 4490 | STATICPORT { 4491 if (pool_opts.staticport) { 4492 yyerror("static-port cannot be redefined"); 4493 YYERROR; 4494 } 4495 pool_opts.staticport = 1; 4496 } 4497 | STICKYADDRESS { 4498 if (pool_opts.marker & POM_STICKYADDRESS) { 4499 yyerror("sticky-address cannot be redefined"); 4500 YYERROR; 4501 } 4502 pool_opts.marker |= POM_STICKYADDRESS; 4503 pool_opts.opts |= PF_POOL_STICKYADDR; 4504 } 4505 | MAPEPORTSET number '/' number '/' number { 4506 if (pool_opts.mape.offset) { 4507 yyerror("map-e-portset cannot be redefined"); 4508 YYERROR; 4509 } 4510 if (pool_opts.type) { 4511 yyerror("map-e-portset cannot be used with " 4512 "address pools"); 4513 YYERROR; 4514 } 4515 if ($2 <= 0 || $2 >= 16) { 4516 yyerror("MAP-E PSID offset must be 1-15"); 4517 YYERROR; 4518 } 4519 if ($4 < 0 || $4 >= 16 || $2 + $4 > 16) { 4520 yyerror("Invalid MAP-E PSID length"); 4521 YYERROR; 4522 } else if ($4 == 0) { 4523 yyerror("PSID Length = 0: this means" 4524 " you do not need MAP-E"); 4525 YYERROR; 4526 } 4527 if ($6 < 0 || $6 > 65535) { 4528 yyerror("Invalid MAP-E PSID"); 4529 YYERROR; 4530 } 4531 pool_opts.mape.offset = $2; 4532 pool_opts.mape.psidlen = $4; 4533 pool_opts.mape.psid = $6; 4534 } 4535 ; 4536 4537 redirection : /* empty */ { $$ = NULL; } 4538 | ARROW host { 4539 $$ = calloc(1, sizeof(struct redirection)); 4540 if ($$ == NULL) 4541 err(1, "redirection: calloc"); 4542 $$->host = $2; 4543 $$->rport.a = $$->rport.b = $$->rport.t = 0; 4544 } 4545 | ARROW host PORT portstar { 4546 $$ = calloc(1, sizeof(struct redirection)); 4547 if ($$ == NULL) 4548 err(1, "redirection: calloc"); 4549 $$->host = $2; 4550 $$->rport = $4; 4551 } 4552 ; 4553 4554 natpasslog : /* empty */ { $$.b1 = $$.b2 = 0; $$.w2 = 0; } 4555 | PASS { $$.b1 = 1; $$.b2 = 0; $$.w2 = 0; } 4556 | PASS log { $$.b1 = 1; $$.b2 = $2.log; $$.w2 = $2.logif; } 4557 | log { $$.b1 = 0; $$.b2 = $1.log; $$.w2 = $1.logif; } 4558 ; 4559 4560 nataction : no NAT natpasslog { 4561 if ($1 && $3.b1) { 4562 yyerror("\"pass\" not valid with \"no\""); 4563 YYERROR; 4564 } 4565 if ($1) 4566 $$.b1 = PF_NONAT; 4567 else 4568 $$.b1 = PF_NAT; 4569 $$.b2 = $3.b1; 4570 $$.w = $3.b2; 4571 $$.w2 = $3.w2; 4572 } 4573 | no RDR natpasslog { 4574 if ($1 && $3.b1) { 4575 yyerror("\"pass\" not valid with \"no\""); 4576 YYERROR; 4577 } 4578 if ($1) 4579 $$.b1 = PF_NORDR; 4580 else 4581 $$.b1 = PF_RDR; 4582 $$.b2 = $3.b1; 4583 $$.w = $3.b2; 4584 $$.w2 = $3.w2; 4585 } 4586 ; 4587 4588 natrule : nataction interface af proto fromto tag tagged rtable 4589 redirpool pool_opts 4590 { 4591 struct pfctl_rule r; 4592 4593 if (check_rulestate(PFCTL_STATE_NAT)) 4594 YYERROR; 4595 4596 memset(&r, 0, sizeof(r)); 4597 4598 r.action = $1.b1; 4599 r.natpass = $1.b2; 4600 r.log = $1.w; 4601 r.logif = $1.w2; 4602 r.af = $3; 4603 4604 if (!r.af) { 4605 if ($5.src.host && $5.src.host->af && 4606 !$5.src.host->ifindex) 4607 r.af = $5.src.host->af; 4608 else if ($5.dst.host && $5.dst.host->af && 4609 !$5.dst.host->ifindex) 4610 r.af = $5.dst.host->af; 4611 } 4612 4613 if ($6 != NULL) 4614 if (strlcpy(r.tagname, $6, PF_TAG_NAME_SIZE) >= 4615 PF_TAG_NAME_SIZE) { 4616 yyerror("tag too long, max %u chars", 4617 PF_TAG_NAME_SIZE - 1); 4618 YYERROR; 4619 } 4620 4621 if ($7.name) 4622 if (strlcpy(r.match_tagname, $7.name, 4623 PF_TAG_NAME_SIZE) >= PF_TAG_NAME_SIZE) { 4624 yyerror("tag too long, max %u chars", 4625 PF_TAG_NAME_SIZE - 1); 4626 YYERROR; 4627 } 4628 r.match_tag_not = $7.neg; 4629 r.rtableid = $8; 4630 4631 if (r.action == PF_NONAT || r.action == PF_NORDR) { 4632 if ($9 != NULL) { 4633 yyerror("translation rule with 'no' " 4634 "does not need '->'"); 4635 YYERROR; 4636 } 4637 } else { 4638 if ($9 == NULL || $9->host == NULL) { 4639 yyerror("translation rule requires '-> " 4640 "address'"); 4641 YYERROR; 4642 } 4643 if (!r.af && ! $9->host->ifindex) 4644 r.af = $9->host->af; 4645 4646 remove_invalid_hosts(&$9->host, &r.af); 4647 if (invalid_redirect($9->host, r.af)) 4648 YYERROR; 4649 if (check_netmask($9->host, r.af)) 4650 YYERROR; 4651 4652 r.rpool.proxy_port[0] = ntohs($9->rport.a); 4653 4654 switch (r.action) { 4655 case PF_RDR: 4656 if (!$9->rport.b && $9->rport.t && 4657 $5.dst.port != NULL) { 4658 r.rpool.proxy_port[1] = 4659 ntohs($9->rport.a) + 4660 (ntohs( 4661 $5.dst.port->port[1]) - 4662 ntohs( 4663 $5.dst.port->port[0])); 4664 } else 4665 r.rpool.proxy_port[1] = 4666 ntohs($9->rport.b); 4667 break; 4668 case PF_NAT: 4669 r.rpool.proxy_port[1] = 4670 ntohs($9->rport.b); 4671 if (!r.rpool.proxy_port[0] && 4672 !r.rpool.proxy_port[1]) { 4673 r.rpool.proxy_port[0] = 4674 PF_NAT_PROXY_PORT_LOW; 4675 r.rpool.proxy_port[1] = 4676 PF_NAT_PROXY_PORT_HIGH; 4677 } else if (!r.rpool.proxy_port[1]) 4678 r.rpool.proxy_port[1] = 4679 r.rpool.proxy_port[0]; 4680 break; 4681 default: 4682 break; 4683 } 4684 4685 r.rpool.opts = $10.type; 4686 if ((r.rpool.opts & PF_POOL_TYPEMASK) == 4687 PF_POOL_NONE && ($9->host->next != NULL || 4688 $9->host->addr.type == PF_ADDR_TABLE || 4689 DYNIF_MULTIADDR($9->host->addr))) 4690 r.rpool.opts = PF_POOL_ROUNDROBIN; 4691 if ((r.rpool.opts & PF_POOL_TYPEMASK) != 4692 PF_POOL_ROUNDROBIN && 4693 disallow_table($9->host, "tables are only " 4694 "supported in round-robin redirection " 4695 "pools")) 4696 YYERROR; 4697 if ((r.rpool.opts & PF_POOL_TYPEMASK) != 4698 PF_POOL_ROUNDROBIN && 4699 disallow_alias($9->host, "interface (%s) " 4700 "is only supported in round-robin " 4701 "redirection pools")) 4702 YYERROR; 4703 if ($9->host->next != NULL) { 4704 if ((r.rpool.opts & PF_POOL_TYPEMASK) != 4705 PF_POOL_ROUNDROBIN) { 4706 yyerror("only round-robin " 4707 "valid for multiple " 4708 "redirection addresses"); 4709 YYERROR; 4710 } 4711 } 4712 } 4713 4714 if ($10.key != NULL) 4715 memcpy(&r.rpool.key, $10.key, 4716 sizeof(struct pf_poolhashkey)); 4717 4718 if ($10.opts) 4719 r.rpool.opts |= $10.opts; 4720 4721 if ($10.staticport) { 4722 if (r.action != PF_NAT) { 4723 yyerror("the 'static-port' option is " 4724 "only valid with nat rules"); 4725 YYERROR; 4726 } 4727 if (r.rpool.proxy_port[0] != 4728 PF_NAT_PROXY_PORT_LOW && 4729 r.rpool.proxy_port[1] != 4730 PF_NAT_PROXY_PORT_HIGH) { 4731 yyerror("the 'static-port' option can't" 4732 " be used when specifying a port" 4733 " range"); 4734 YYERROR; 4735 } 4736 r.rpool.proxy_port[0] = 0; 4737 r.rpool.proxy_port[1] = 0; 4738 } 4739 4740 if ($10.mape.offset) { 4741 if (r.action != PF_NAT) { 4742 yyerror("the 'map-e-portset' option is" 4743 " only valid with nat rules"); 4744 YYERROR; 4745 } 4746 if ($10.staticport) { 4747 yyerror("the 'map-e-portset' option" 4748 " can't be used 'static-port'"); 4749 YYERROR; 4750 } 4751 if (r.rpool.proxy_port[0] != 4752 PF_NAT_PROXY_PORT_LOW && 4753 r.rpool.proxy_port[1] != 4754 PF_NAT_PROXY_PORT_HIGH) { 4755 yyerror("the 'map-e-portset' option" 4756 " can't be used when specifying" 4757 " a port range"); 4758 YYERROR; 4759 } 4760 r.rpool.mape = $10.mape; 4761 } 4762 4763 expand_rule(&r, $2, $9 == NULL ? NULL : $9->host, $4, 4764 $5.src_os, $5.src.host, $5.src.port, $5.dst.host, 4765 $5.dst.port, 0, 0, 0, ""); 4766 free($9); 4767 } 4768 ; 4769 4770 binatrule : no BINAT natpasslog interface af proto FROM ipspec toipspec tag 4771 tagged rtable redirection 4772 { 4773 struct pfctl_rule binat; 4774 struct pf_pooladdr *pa; 4775 4776 if (check_rulestate(PFCTL_STATE_NAT)) 4777 YYERROR; 4778 if (disallow_urpf_failed($9, "\"urpf-failed\" is not " 4779 "permitted as a binat destination")) 4780 YYERROR; 4781 4782 memset(&binat, 0, sizeof(binat)); 4783 4784 if ($1 && $3.b1) { 4785 yyerror("\"pass\" not valid with \"no\""); 4786 YYERROR; 4787 } 4788 if ($1) 4789 binat.action = PF_NOBINAT; 4790 else 4791 binat.action = PF_BINAT; 4792 binat.natpass = $3.b1; 4793 binat.log = $3.b2; 4794 binat.logif = $3.w2; 4795 binat.af = $5; 4796 if (!binat.af && $8 != NULL && $8->af) 4797 binat.af = $8->af; 4798 if (!binat.af && $9 != NULL && $9->af) 4799 binat.af = $9->af; 4800 4801 if (!binat.af && $13 != NULL && $13->host) 4802 binat.af = $13->host->af; 4803 if (!binat.af) { 4804 yyerror("address family (inet/inet6) " 4805 "undefined"); 4806 YYERROR; 4807 } 4808 4809 if ($4 != NULL) { 4810 memcpy(binat.ifname, $4->ifname, 4811 sizeof(binat.ifname)); 4812 binat.ifnot = $4->not; 4813 free($4); 4814 } 4815 4816 if ($10 != NULL) 4817 if (strlcpy(binat.tagname, $10, 4818 PF_TAG_NAME_SIZE) >= PF_TAG_NAME_SIZE) { 4819 yyerror("tag too long, max %u chars", 4820 PF_TAG_NAME_SIZE - 1); 4821 YYERROR; 4822 } 4823 if ($11.name) 4824 if (strlcpy(binat.match_tagname, $11.name, 4825 PF_TAG_NAME_SIZE) >= PF_TAG_NAME_SIZE) { 4826 yyerror("tag too long, max %u chars", 4827 PF_TAG_NAME_SIZE - 1); 4828 YYERROR; 4829 } 4830 binat.match_tag_not = $11.neg; 4831 binat.rtableid = $12; 4832 4833 if ($6 != NULL) { 4834 binat.proto = $6->proto; 4835 free($6); 4836 } 4837 4838 if ($8 != NULL && disallow_table($8, "invalid use of " 4839 "table <%s> as the source address of a binat rule")) 4840 YYERROR; 4841 if ($8 != NULL && disallow_alias($8, "invalid use of " 4842 "interface (%s) as the source address of a binat " 4843 "rule")) 4844 YYERROR; 4845 if ($13 != NULL && $13->host != NULL && disallow_table( 4846 $13->host, "invalid use of table <%s> as the " 4847 "redirect address of a binat rule")) 4848 YYERROR; 4849 if ($13 != NULL && $13->host != NULL && disallow_alias( 4850 $13->host, "invalid use of interface (%s) as the " 4851 "redirect address of a binat rule")) 4852 YYERROR; 4853 4854 if ($8 != NULL) { 4855 if ($8->next) { 4856 yyerror("multiple binat ip addresses"); 4857 YYERROR; 4858 } 4859 if ($8->addr.type == PF_ADDR_DYNIFTL) 4860 $8->af = binat.af; 4861 if ($8->af != binat.af) { 4862 yyerror("binat ip versions must match"); 4863 YYERROR; 4864 } 4865 if (check_netmask($8, binat.af)) 4866 YYERROR; 4867 memcpy(&binat.src.addr, &$8->addr, 4868 sizeof(binat.src.addr)); 4869 free($8); 4870 } 4871 if ($9 != NULL) { 4872 if ($9->next) { 4873 yyerror("multiple binat ip addresses"); 4874 YYERROR; 4875 } 4876 if ($9->af != binat.af && $9->af) { 4877 yyerror("binat ip versions must match"); 4878 YYERROR; 4879 } 4880 if (check_netmask($9, binat.af)) 4881 YYERROR; 4882 memcpy(&binat.dst.addr, &$9->addr, 4883 sizeof(binat.dst.addr)); 4884 binat.dst.neg = $9->not; 4885 free($9); 4886 } 4887 4888 if (binat.action == PF_NOBINAT) { 4889 if ($13 != NULL) { 4890 yyerror("'no binat' rule does not need" 4891 " '->'"); 4892 YYERROR; 4893 } 4894 } else { 4895 if ($13 == NULL || $13->host == NULL) { 4896 yyerror("'binat' rule requires" 4897 " '-> address'"); 4898 YYERROR; 4899 } 4900 4901 remove_invalid_hosts(&$13->host, &binat.af); 4902 if (invalid_redirect($13->host, binat.af)) 4903 YYERROR; 4904 if ($13->host->next != NULL) { 4905 yyerror("binat rule must redirect to " 4906 "a single address"); 4907 YYERROR; 4908 } 4909 if (check_netmask($13->host, binat.af)) 4910 YYERROR; 4911 4912 if (!PF_AZERO(&binat.src.addr.v.a.mask, 4913 binat.af) && 4914 !PF_AEQ(&binat.src.addr.v.a.mask, 4915 &$13->host->addr.v.a.mask, binat.af)) { 4916 yyerror("'binat' source mask and " 4917 "redirect mask must be the same"); 4918 YYERROR; 4919 } 4920 4921 TAILQ_INIT(&binat.rpool.list); 4922 pa = calloc(1, sizeof(struct pf_pooladdr)); 4923 if (pa == NULL) 4924 err(1, "binat: calloc"); 4925 pa->addr = $13->host->addr; 4926 pa->ifname[0] = 0; 4927 TAILQ_INSERT_TAIL(&binat.rpool.list, 4928 pa, entries); 4929 4930 free($13); 4931 } 4932 4933 pfctl_append_rule(pf, &binat, ""); 4934 } 4935 ; 4936 4937 tag : /* empty */ { $$ = NULL; } 4938 | TAG STRING { $$ = $2; } 4939 ; 4940 4941 tagged : /* empty */ { $$.neg = 0; $$.name = NULL; } 4942 | not TAGGED string { $$.neg = $1; $$.name = $3; } 4943 ; 4944 4945 rtable : /* empty */ { $$ = -1; } 4946 | RTABLE NUMBER { 4947 if ($2 < 0 || $2 > rt_tableid_max()) { 4948 yyerror("invalid rtable id"); 4949 YYERROR; 4950 } 4951 $$ = $2; 4952 } 4953 ; 4954 4955 route_host : STRING { 4956 $$ = calloc(1, sizeof(struct node_host)); 4957 if ($$ == NULL) 4958 err(1, "route_host: calloc"); 4959 if (strlen($1) >= IFNAMSIZ) { 4960 yyerror("interface name too long"); 4961 YYERROR; 4962 } 4963 $$->ifname = strdup($1); 4964 set_ipmask($$, 128); 4965 $$->next = NULL; 4966 $$->tail = $$; 4967 } 4968 | '(' STRING host ')' { 4969 struct node_host *n; 4970 4971 $$ = $3; 4972 for (n = $3; n != NULL; n = n->next) { 4973 if (strlen($2) >= IFNAMSIZ) { 4974 yyerror("interface name too long"); 4975 YYERROR; 4976 } 4977 n->ifname = strdup($2); 4978 } 4979 } 4980 ; 4981 4982 route_host_list : route_host optnl { $$ = $1; } 4983 | route_host_list comma route_host optnl { 4984 if ($1->af == 0) 4985 $1->af = $3->af; 4986 if ($1->af != $3->af) { 4987 yyerror("all pool addresses must be in the " 4988 "same address family"); 4989 YYERROR; 4990 } 4991 $1->tail->next = $3; 4992 $1->tail = $3->tail; 4993 $$ = $1; 4994 } 4995 ; 4996 4997 routespec : route_host { $$ = $1; } 4998 | '{' optnl route_host_list '}' { $$ = $3; } 4999 ; 5000 5001 route : /* empty */ { 5002 $$.host = NULL; 5003 $$.rt = 0; 5004 $$.pool_opts = 0; 5005 } 5006 | FASTROUTE { 5007 /* backwards-compat */ 5008 $$.host = NULL; 5009 $$.rt = 0; 5010 $$.pool_opts = 0; 5011 } 5012 | ROUTETO routespec pool_opts { 5013 $$.host = $2; 5014 $$.rt = PF_ROUTETO; 5015 $$.pool_opts = $3.type | $3.opts; 5016 if ($3.key != NULL) 5017 $$.key = $3.key; 5018 } 5019 | REPLYTO routespec pool_opts { 5020 $$.host = $2; 5021 $$.rt = PF_REPLYTO; 5022 $$.pool_opts = $3.type | $3.opts; 5023 if ($3.key != NULL) 5024 $$.key = $3.key; 5025 } 5026 | DUPTO routespec pool_opts { 5027 $$.host = $2; 5028 $$.rt = PF_DUPTO; 5029 $$.pool_opts = $3.type | $3.opts; 5030 if ($3.key != NULL) 5031 $$.key = $3.key; 5032 } 5033 ; 5034 5035 timeout_spec : STRING NUMBER 5036 { 5037 if (check_rulestate(PFCTL_STATE_OPTION)) { 5038 free($1); 5039 YYERROR; 5040 } 5041 if ($2 < 0 || $2 > UINT_MAX) { 5042 yyerror("only positive values permitted"); 5043 YYERROR; 5044 } 5045 if (pfctl_set_timeout(pf, $1, $2, 0) != 0) { 5046 yyerror("unknown timeout %s", $1); 5047 free($1); 5048 YYERROR; 5049 } 5050 free($1); 5051 } 5052 | INTERVAL NUMBER { 5053 if (check_rulestate(PFCTL_STATE_OPTION)) 5054 YYERROR; 5055 if ($2 < 0 || $2 > UINT_MAX) { 5056 yyerror("only positive values permitted"); 5057 YYERROR; 5058 } 5059 if (pfctl_set_timeout(pf, "interval", $2, 0) != 0) 5060 YYERROR; 5061 } 5062 ; 5063 5064 timeout_list : timeout_list comma timeout_spec optnl 5065 | timeout_spec optnl 5066 ; 5067 5068 limit_spec : STRING NUMBER 5069 { 5070 if (check_rulestate(PFCTL_STATE_OPTION)) { 5071 free($1); 5072 YYERROR; 5073 } 5074 if ($2 < 0 || $2 > UINT_MAX) { 5075 yyerror("only positive values permitted"); 5076 YYERROR; 5077 } 5078 if (pfctl_set_limit(pf, $1, $2) != 0) { 5079 yyerror("unable to set limit %s %u", $1, $2); 5080 free($1); 5081 YYERROR; 5082 } 5083 free($1); 5084 } 5085 ; 5086 5087 limit_list : limit_list comma limit_spec optnl 5088 | limit_spec optnl 5089 ; 5090 5091 comma : ',' 5092 | /* empty */ 5093 ; 5094 5095 yesno : NO { $$ = 0; } 5096 | STRING { 5097 if (!strcmp($1, "yes")) 5098 $$ = 1; 5099 else { 5100 yyerror("invalid value '%s', expected 'yes' " 5101 "or 'no'", $1); 5102 free($1); 5103 YYERROR; 5104 } 5105 free($1); 5106 } 5107 ; 5108 5109 unaryop : '=' { $$ = PF_OP_EQ; } 5110 | '!' '=' { $$ = PF_OP_NE; } 5111 | '<' '=' { $$ = PF_OP_LE; } 5112 | '<' { $$ = PF_OP_LT; } 5113 | '>' '=' { $$ = PF_OP_GE; } 5114 | '>' { $$ = PF_OP_GT; } 5115 ; 5116 5117 %% 5118 5119 int 5120 yyerror(const char *fmt, ...) 5121 { 5122 va_list ap; 5123 5124 file->errors++; 5125 va_start(ap, fmt); 5126 fprintf(stderr, "%s:%d: ", file->name, yylval.lineno); 5127 vfprintf(stderr, fmt, ap); 5128 fprintf(stderr, "\n"); 5129 va_end(ap); 5130 return (0); 5131 } 5132 5133 int 5134 disallow_table(struct node_host *h, const char *fmt) 5135 { 5136 for (; h != NULL; h = h->next) 5137 if (h->addr.type == PF_ADDR_TABLE) { 5138 yyerror(fmt, h->addr.v.tblname); 5139 return (1); 5140 } 5141 return (0); 5142 } 5143 5144 int 5145 disallow_urpf_failed(struct node_host *h, const char *fmt) 5146 { 5147 for (; h != NULL; h = h->next) 5148 if (h->addr.type == PF_ADDR_URPFFAILED) { 5149 yyerror(fmt); 5150 return (1); 5151 } 5152 return (0); 5153 } 5154 5155 int 5156 disallow_alias(struct node_host *h, const char *fmt) 5157 { 5158 for (; h != NULL; h = h->next) 5159 if (DYNIF_MULTIADDR(h->addr)) { 5160 yyerror(fmt, h->addr.v.tblname); 5161 return (1); 5162 } 5163 return (0); 5164 } 5165 5166 int 5167 rule_consistent(struct pfctl_rule *r, int anchor_call) 5168 { 5169 int problems = 0; 5170 5171 switch (r->action) { 5172 case PF_PASS: 5173 case PF_DROP: 5174 case PF_SCRUB: 5175 case PF_NOSCRUB: 5176 problems = filter_consistent(r, anchor_call); 5177 break; 5178 case PF_NAT: 5179 case PF_NONAT: 5180 problems = nat_consistent(r); 5181 break; 5182 case PF_RDR: 5183 case PF_NORDR: 5184 problems = rdr_consistent(r); 5185 break; 5186 case PF_BINAT: 5187 case PF_NOBINAT: 5188 default: 5189 break; 5190 } 5191 return (problems); 5192 } 5193 5194 int 5195 filter_consistent(struct pfctl_rule *r, int anchor_call) 5196 { 5197 int problems = 0; 5198 5199 if (r->proto != IPPROTO_TCP && r->proto != IPPROTO_UDP && 5200 (r->src.port_op || r->dst.port_op)) { 5201 yyerror("port only applies to tcp/udp"); 5202 problems++; 5203 } 5204 if (r->proto != IPPROTO_ICMP && r->proto != IPPROTO_ICMPV6 && 5205 (r->type || r->code)) { 5206 yyerror("icmp-type/code only applies to icmp"); 5207 problems++; 5208 } 5209 if (!r->af && (r->type || r->code)) { 5210 yyerror("must indicate address family with icmp-type/code"); 5211 problems++; 5212 } 5213 if (r->overload_tblname[0] && 5214 r->max_src_conn == 0 && r->max_src_conn_rate.seconds == 0) { 5215 yyerror("'overload' requires 'max-src-conn' " 5216 "or 'max-src-conn-rate'"); 5217 problems++; 5218 } 5219 if ((r->proto == IPPROTO_ICMP && r->af == AF_INET6) || 5220 (r->proto == IPPROTO_ICMPV6 && r->af == AF_INET)) { 5221 yyerror("proto %s doesn't match address family %s", 5222 r->proto == IPPROTO_ICMP ? "icmp" : "icmp6", 5223 r->af == AF_INET ? "inet" : "inet6"); 5224 problems++; 5225 } 5226 if (r->allow_opts && r->action != PF_PASS) { 5227 yyerror("allow-opts can only be specified for pass rules"); 5228 problems++; 5229 } 5230 if (r->rule_flag & PFRULE_FRAGMENT && (r->src.port_op || 5231 r->dst.port_op || r->flagset || r->type || r->code)) { 5232 yyerror("fragments can be filtered only on IP header fields"); 5233 problems++; 5234 } 5235 if (r->rule_flag & PFRULE_RETURNRST && r->proto != IPPROTO_TCP) { 5236 yyerror("return-rst can only be applied to TCP rules"); 5237 problems++; 5238 } 5239 if (r->max_src_nodes && !(r->rule_flag & PFRULE_RULESRCTRACK)) { 5240 yyerror("max-src-nodes requires 'source-track rule'"); 5241 problems++; 5242 } 5243 if (r->action == PF_DROP && r->keep_state) { 5244 yyerror("keep state on block rules doesn't make sense"); 5245 problems++; 5246 } 5247 if (r->rule_flag & PFRULE_STATESLOPPY && 5248 (r->keep_state == PF_STATE_MODULATE || 5249 r->keep_state == PF_STATE_SYNPROXY)) { 5250 yyerror("sloppy state matching cannot be used with " 5251 "synproxy state or modulate state"); 5252 problems++; 5253 } 5254 return (-problems); 5255 } 5256 5257 int 5258 nat_consistent(struct pfctl_rule *r) 5259 { 5260 return (0); /* yeah! */ 5261 } 5262 5263 int 5264 rdr_consistent(struct pfctl_rule *r) 5265 { 5266 int problems = 0; 5267 5268 if (r->proto != IPPROTO_TCP && r->proto != IPPROTO_UDP) { 5269 if (r->src.port_op) { 5270 yyerror("src port only applies to tcp/udp"); 5271 problems++; 5272 } 5273 if (r->dst.port_op) { 5274 yyerror("dst port only applies to tcp/udp"); 5275 problems++; 5276 } 5277 if (r->rpool.proxy_port[0]) { 5278 yyerror("rpool port only applies to tcp/udp"); 5279 problems++; 5280 } 5281 } 5282 if (r->dst.port_op && 5283 r->dst.port_op != PF_OP_EQ && r->dst.port_op != PF_OP_RRG) { 5284 yyerror("invalid port operator for rdr destination port"); 5285 problems++; 5286 } 5287 return (-problems); 5288 } 5289 5290 int 5291 process_tabledef(char *name, struct table_opts *opts) 5292 { 5293 struct pfr_buffer ab; 5294 struct node_tinit *ti; 5295 unsigned long maxcount; 5296 size_t s = sizeof(maxcount); 5297 5298 bzero(&ab, sizeof(ab)); 5299 ab.pfrb_type = PFRB_ADDRS; 5300 SIMPLEQ_FOREACH(ti, &opts->init_nodes, entries) { 5301 if (ti->file) 5302 if (pfr_buf_load(&ab, ti->file, 0, append_addr)) { 5303 if (errno) 5304 yyerror("cannot load \"%s\": %s", 5305 ti->file, strerror(errno)); 5306 else 5307 yyerror("file \"%s\" contains bad data", 5308 ti->file); 5309 goto _error; 5310 } 5311 if (ti->host) 5312 if (append_addr_host(&ab, ti->host, 0, 0)) { 5313 yyerror("cannot create address buffer: %s", 5314 strerror(errno)); 5315 goto _error; 5316 } 5317 } 5318 if (pf->opts & PF_OPT_VERBOSE) 5319 print_tabledef(name, opts->flags, opts->init_addr, 5320 &opts->init_nodes); 5321 if (!(pf->opts & PF_OPT_NOACTION) && 5322 pfctl_define_table(name, opts->flags, opts->init_addr, 5323 pf->anchor->name, &ab, pf->anchor->ruleset.tticket)) { 5324 5325 if (sysctlbyname("net.pf.request_maxcount", &maxcount, &s, 5326 NULL, 0) == -1) 5327 maxcount = 65535; 5328 5329 if (ab.pfrb_size > maxcount) 5330 yyerror("cannot define table %s: too many elements.\n" 5331 "Consider increasing net.pf.request_maxcount.", 5332 name); 5333 else 5334 yyerror("cannot define table %s: %s", name, 5335 pfr_strerror(errno)); 5336 5337 goto _error; 5338 } 5339 pf->tdirty = 1; 5340 pfr_buf_clear(&ab); 5341 return (0); 5342 _error: 5343 pfr_buf_clear(&ab); 5344 return (-1); 5345 } 5346 5347 struct keywords { 5348 const char *k_name; 5349 int k_val; 5350 }; 5351 5352 /* macro gore, but you should've seen the prior indentation nightmare... */ 5353 5354 #define FREE_LIST(T,r) \ 5355 do { \ 5356 T *p, *node = r; \ 5357 while (node != NULL) { \ 5358 p = node; \ 5359 node = node->next; \ 5360 free(p); \ 5361 } \ 5362 } while (0) 5363 5364 #define LOOP_THROUGH(T,n,r,C) \ 5365 do { \ 5366 T *n; \ 5367 if (r == NULL) { \ 5368 r = calloc(1, sizeof(T)); \ 5369 if (r == NULL) \ 5370 err(1, "LOOP: calloc"); \ 5371 r->next = NULL; \ 5372 } \ 5373 n = r; \ 5374 while (n != NULL) { \ 5375 do { \ 5376 C; \ 5377 } while (0); \ 5378 n = n->next; \ 5379 } \ 5380 } while (0) 5381 5382 void 5383 expand_label_str(char *label, size_t len, const char *srch, const char *repl) 5384 { 5385 char *tmp; 5386 char *p, *q; 5387 5388 if ((tmp = calloc(1, len)) == NULL) 5389 err(1, "expand_label_str: calloc"); 5390 p = q = label; 5391 while ((q = strstr(p, srch)) != NULL) { 5392 *q = '\0'; 5393 if ((strlcat(tmp, p, len) >= len) || 5394 (strlcat(tmp, repl, len) >= len)) 5395 errx(1, "expand_label: label too long"); 5396 q += strlen(srch); 5397 p = q; 5398 } 5399 if (strlcat(tmp, p, len) >= len) 5400 errx(1, "expand_label: label too long"); 5401 strlcpy(label, tmp, len); /* always fits */ 5402 free(tmp); 5403 } 5404 5405 void 5406 expand_label_if(const char *name, char *label, size_t len, const char *ifname) 5407 { 5408 if (strstr(label, name) != NULL) { 5409 if (!*ifname) 5410 expand_label_str(label, len, name, "any"); 5411 else 5412 expand_label_str(label, len, name, ifname); 5413 } 5414 } 5415 5416 void 5417 expand_label_addr(const char *name, char *label, size_t len, sa_family_t af, 5418 struct pf_rule_addr *addr) 5419 { 5420 char tmp[64], tmp_not[66]; 5421 5422 if (strstr(label, name) != NULL) { 5423 switch (addr->addr.type) { 5424 case PF_ADDR_DYNIFTL: 5425 snprintf(tmp, sizeof(tmp), "(%s)", addr->addr.v.ifname); 5426 break; 5427 case PF_ADDR_TABLE: 5428 snprintf(tmp, sizeof(tmp), "<%s>", addr->addr.v.tblname); 5429 break; 5430 case PF_ADDR_NOROUTE: 5431 snprintf(tmp, sizeof(tmp), "no-route"); 5432 break; 5433 case PF_ADDR_URPFFAILED: 5434 snprintf(tmp, sizeof(tmp), "urpf-failed"); 5435 break; 5436 case PF_ADDR_ADDRMASK: 5437 if (!af || (PF_AZERO(&addr->addr.v.a.addr, af) && 5438 PF_AZERO(&addr->addr.v.a.mask, af))) 5439 snprintf(tmp, sizeof(tmp), "any"); 5440 else { 5441 char a[48]; 5442 int bits; 5443 5444 if (inet_ntop(af, &addr->addr.v.a.addr, a, 5445 sizeof(a)) == NULL) 5446 snprintf(tmp, sizeof(tmp), "?"); 5447 else { 5448 bits = unmask(&addr->addr.v.a.mask, af); 5449 if ((af == AF_INET && bits < 32) || 5450 (af == AF_INET6 && bits < 128)) 5451 snprintf(tmp, sizeof(tmp), 5452 "%s/%d", a, bits); 5453 else 5454 snprintf(tmp, sizeof(tmp), 5455 "%s", a); 5456 } 5457 } 5458 break; 5459 default: 5460 snprintf(tmp, sizeof(tmp), "?"); 5461 break; 5462 } 5463 5464 if (addr->neg) { 5465 snprintf(tmp_not, sizeof(tmp_not), "! %s", tmp); 5466 expand_label_str(label, len, name, tmp_not); 5467 } else 5468 expand_label_str(label, len, name, tmp); 5469 } 5470 } 5471 5472 void 5473 expand_label_port(const char *name, char *label, size_t len, 5474 struct pf_rule_addr *addr) 5475 { 5476 char a1[6], a2[6], op[13] = ""; 5477 5478 if (strstr(label, name) != NULL) { 5479 snprintf(a1, sizeof(a1), "%u", ntohs(addr->port[0])); 5480 snprintf(a2, sizeof(a2), "%u", ntohs(addr->port[1])); 5481 if (!addr->port_op) 5482 ; 5483 else if (addr->port_op == PF_OP_IRG) 5484 snprintf(op, sizeof(op), "%s><%s", a1, a2); 5485 else if (addr->port_op == PF_OP_XRG) 5486 snprintf(op, sizeof(op), "%s<>%s", a1, a2); 5487 else if (addr->port_op == PF_OP_EQ) 5488 snprintf(op, sizeof(op), "%s", a1); 5489 else if (addr->port_op == PF_OP_NE) 5490 snprintf(op, sizeof(op), "!=%s", a1); 5491 else if (addr->port_op == PF_OP_LT) 5492 snprintf(op, sizeof(op), "<%s", a1); 5493 else if (addr->port_op == PF_OP_LE) 5494 snprintf(op, sizeof(op), "<=%s", a1); 5495 else if (addr->port_op == PF_OP_GT) 5496 snprintf(op, sizeof(op), ">%s", a1); 5497 else if (addr->port_op == PF_OP_GE) 5498 snprintf(op, sizeof(op), ">=%s", a1); 5499 expand_label_str(label, len, name, op); 5500 } 5501 } 5502 5503 void 5504 expand_label_proto(const char *name, char *label, size_t len, u_int8_t proto) 5505 { 5506 const char *protoname; 5507 char n[4]; 5508 5509 if (strstr(label, name) != NULL) { 5510 protoname = pfctl_proto2name(proto); 5511 if (protoname != NULL) 5512 expand_label_str(label, len, name, protoname); 5513 else { 5514 snprintf(n, sizeof(n), "%u", proto); 5515 expand_label_str(label, len, name, n); 5516 } 5517 } 5518 } 5519 5520 void 5521 expand_label_nr(const char *name, char *label, size_t len, 5522 struct pfctl_rule *r) 5523 { 5524 char n[11]; 5525 5526 if (strstr(label, name) != NULL) { 5527 snprintf(n, sizeof(n), "%u", r->nr); 5528 expand_label_str(label, len, name, n); 5529 } 5530 } 5531 5532 void 5533 expand_label(char *label, size_t len, struct pfctl_rule *r) 5534 { 5535 expand_label_if("$if", label, len, r->ifname); 5536 expand_label_addr("$srcaddr", label, len, r->af, &r->src); 5537 expand_label_addr("$dstaddr", label, len, r->af, &r->dst); 5538 expand_label_port("$srcport", label, len, &r->src); 5539 expand_label_port("$dstport", label, len, &r->dst); 5540 expand_label_proto("$proto", label, len, r->proto); 5541 expand_label_nr("$nr", label, len, r); 5542 } 5543 5544 int 5545 expand_altq(struct pf_altq *a, struct node_if *interfaces, 5546 struct node_queue *nqueues, struct node_queue_bw bwspec, 5547 struct node_queue_opt *opts) 5548 { 5549 struct pf_altq pa, pb; 5550 char qname[PF_QNAME_SIZE]; 5551 struct node_queue *n; 5552 struct node_queue_bw bw; 5553 int errs = 0; 5554 5555 if ((pf->loadopt & PFCTL_FLAG_ALTQ) == 0) { 5556 FREE_LIST(struct node_if, interfaces); 5557 if (nqueues) 5558 FREE_LIST(struct node_queue, nqueues); 5559 return (0); 5560 } 5561 5562 LOOP_THROUGH(struct node_if, interface, interfaces, 5563 memcpy(&pa, a, sizeof(struct pf_altq)); 5564 if (strlcpy(pa.ifname, interface->ifname, 5565 sizeof(pa.ifname)) >= sizeof(pa.ifname)) 5566 errx(1, "expand_altq: strlcpy"); 5567 5568 if (interface->not) { 5569 yyerror("altq on ! <interface> is not supported"); 5570 errs++; 5571 } else { 5572 if (eval_pfaltq(pf, &pa, &bwspec, opts)) 5573 errs++; 5574 else 5575 if (pfctl_add_altq(pf, &pa)) 5576 errs++; 5577 5578 if (pf->opts & PF_OPT_VERBOSE) { 5579 print_altq(&pf->paltq->altq, 0, 5580 &bwspec, opts); 5581 if (nqueues && nqueues->tail) { 5582 printf("queue { "); 5583 LOOP_THROUGH(struct node_queue, queue, 5584 nqueues, 5585 printf("%s ", 5586 queue->queue); 5587 ); 5588 printf("}"); 5589 } 5590 printf("\n"); 5591 } 5592 5593 if (pa.scheduler == ALTQT_CBQ || 5594 pa.scheduler == ALTQT_HFSC || 5595 pa.scheduler == ALTQT_FAIRQ) { 5596 /* now create a root queue */ 5597 memset(&pb, 0, sizeof(struct pf_altq)); 5598 if (strlcpy(qname, "root_", sizeof(qname)) >= 5599 sizeof(qname)) 5600 errx(1, "expand_altq: strlcpy"); 5601 if (strlcat(qname, interface->ifname, 5602 sizeof(qname)) >= sizeof(qname)) 5603 errx(1, "expand_altq: strlcat"); 5604 if (strlcpy(pb.qname, qname, 5605 sizeof(pb.qname)) >= sizeof(pb.qname)) 5606 errx(1, "expand_altq: strlcpy"); 5607 if (strlcpy(pb.ifname, interface->ifname, 5608 sizeof(pb.ifname)) >= sizeof(pb.ifname)) 5609 errx(1, "expand_altq: strlcpy"); 5610 pb.qlimit = pa.qlimit; 5611 pb.scheduler = pa.scheduler; 5612 bw.bw_absolute = pa.ifbandwidth; 5613 bw.bw_percent = 0; 5614 if (eval_pfqueue(pf, &pb, &bw, opts)) 5615 errs++; 5616 else 5617 if (pfctl_add_altq(pf, &pb)) 5618 errs++; 5619 } 5620 5621 LOOP_THROUGH(struct node_queue, queue, nqueues, 5622 n = calloc(1, sizeof(struct node_queue)); 5623 if (n == NULL) 5624 err(1, "expand_altq: calloc"); 5625 if (pa.scheduler == ALTQT_CBQ || 5626 pa.scheduler == ALTQT_HFSC || 5627 pa.scheduler == ALTQT_FAIRQ) 5628 if (strlcpy(n->parent, qname, 5629 sizeof(n->parent)) >= 5630 sizeof(n->parent)) 5631 errx(1, "expand_altq: strlcpy"); 5632 if (strlcpy(n->queue, queue->queue, 5633 sizeof(n->queue)) >= sizeof(n->queue)) 5634 errx(1, "expand_altq: strlcpy"); 5635 if (strlcpy(n->ifname, interface->ifname, 5636 sizeof(n->ifname)) >= sizeof(n->ifname)) 5637 errx(1, "expand_altq: strlcpy"); 5638 n->scheduler = pa.scheduler; 5639 n->next = NULL; 5640 n->tail = n; 5641 if (queues == NULL) 5642 queues = n; 5643 else { 5644 queues->tail->next = n; 5645 queues->tail = n; 5646 } 5647 ); 5648 } 5649 ); 5650 FREE_LIST(struct node_if, interfaces); 5651 if (nqueues) 5652 FREE_LIST(struct node_queue, nqueues); 5653 5654 return (errs); 5655 } 5656 5657 int 5658 expand_queue(struct pf_altq *a, struct node_if *interfaces, 5659 struct node_queue *nqueues, struct node_queue_bw bwspec, 5660 struct node_queue_opt *opts) 5661 { 5662 struct node_queue *n, *nq; 5663 struct pf_altq pa; 5664 u_int8_t found = 0; 5665 u_int8_t errs = 0; 5666 5667 if ((pf->loadopt & PFCTL_FLAG_ALTQ) == 0) { 5668 FREE_LIST(struct node_queue, nqueues); 5669 return (0); 5670 } 5671 5672 if (queues == NULL) { 5673 yyerror("queue %s has no parent", a->qname); 5674 FREE_LIST(struct node_queue, nqueues); 5675 return (1); 5676 } 5677 5678 LOOP_THROUGH(struct node_if, interface, interfaces, 5679 LOOP_THROUGH(struct node_queue, tqueue, queues, 5680 if (!strncmp(a->qname, tqueue->queue, PF_QNAME_SIZE) && 5681 (interface->ifname[0] == 0 || 5682 (!interface->not && !strncmp(interface->ifname, 5683 tqueue->ifname, IFNAMSIZ)) || 5684 (interface->not && strncmp(interface->ifname, 5685 tqueue->ifname, IFNAMSIZ)))) { 5686 /* found ourself in queues */ 5687 found++; 5688 5689 memcpy(&pa, a, sizeof(struct pf_altq)); 5690 5691 if (pa.scheduler != ALTQT_NONE && 5692 pa.scheduler != tqueue->scheduler) { 5693 yyerror("exactly one scheduler type " 5694 "per interface allowed"); 5695 return (1); 5696 } 5697 pa.scheduler = tqueue->scheduler; 5698 5699 /* scheduler dependent error checking */ 5700 switch (pa.scheduler) { 5701 case ALTQT_PRIQ: 5702 if (nqueues != NULL) { 5703 yyerror("priq queues cannot " 5704 "have child queues"); 5705 return (1); 5706 } 5707 if (bwspec.bw_absolute > 0 || 5708 bwspec.bw_percent < 100) { 5709 yyerror("priq doesn't take " 5710 "bandwidth"); 5711 return (1); 5712 } 5713 break; 5714 default: 5715 break; 5716 } 5717 5718 if (strlcpy(pa.ifname, tqueue->ifname, 5719 sizeof(pa.ifname)) >= sizeof(pa.ifname)) 5720 errx(1, "expand_queue: strlcpy"); 5721 if (strlcpy(pa.parent, tqueue->parent, 5722 sizeof(pa.parent)) >= sizeof(pa.parent)) 5723 errx(1, "expand_queue: strlcpy"); 5724 5725 if (eval_pfqueue(pf, &pa, &bwspec, opts)) 5726 errs++; 5727 else 5728 if (pfctl_add_altq(pf, &pa)) 5729 errs++; 5730 5731 for (nq = nqueues; nq != NULL; nq = nq->next) { 5732 if (!strcmp(a->qname, nq->queue)) { 5733 yyerror("queue cannot have " 5734 "itself as child"); 5735 errs++; 5736 continue; 5737 } 5738 n = calloc(1, 5739 sizeof(struct node_queue)); 5740 if (n == NULL) 5741 err(1, "expand_queue: calloc"); 5742 if (strlcpy(n->parent, a->qname, 5743 sizeof(n->parent)) >= 5744 sizeof(n->parent)) 5745 errx(1, "expand_queue strlcpy"); 5746 if (strlcpy(n->queue, nq->queue, 5747 sizeof(n->queue)) >= 5748 sizeof(n->queue)) 5749 errx(1, "expand_queue strlcpy"); 5750 if (strlcpy(n->ifname, tqueue->ifname, 5751 sizeof(n->ifname)) >= 5752 sizeof(n->ifname)) 5753 errx(1, "expand_queue strlcpy"); 5754 n->scheduler = tqueue->scheduler; 5755 n->next = NULL; 5756 n->tail = n; 5757 if (queues == NULL) 5758 queues = n; 5759 else { 5760 queues->tail->next = n; 5761 queues->tail = n; 5762 } 5763 } 5764 if ((pf->opts & PF_OPT_VERBOSE) && ( 5765 (found == 1 && interface->ifname[0] == 0) || 5766 (found > 0 && interface->ifname[0] != 0))) { 5767 print_queue(&pf->paltq->altq, 0, 5768 &bwspec, interface->ifname[0] != 0, 5769 opts); 5770 if (nqueues && nqueues->tail) { 5771 printf("{ "); 5772 LOOP_THROUGH(struct node_queue, 5773 queue, nqueues, 5774 printf("%s ", 5775 queue->queue); 5776 ); 5777 printf("}"); 5778 } 5779 printf("\n"); 5780 } 5781 } 5782 ); 5783 ); 5784 5785 FREE_LIST(struct node_queue, nqueues); 5786 FREE_LIST(struct node_if, interfaces); 5787 5788 if (!found) { 5789 yyerror("queue %s has no parent", a->qname); 5790 errs++; 5791 } 5792 5793 if (errs) 5794 return (1); 5795 else 5796 return (0); 5797 } 5798 5799 static int 5800 pf_af_to_proto(sa_family_t af) 5801 { 5802 if (af == AF_INET) 5803 return (ETHERTYPE_IP); 5804 if (af == AF_INET6) 5805 return (ETHERTYPE_IPV6); 5806 5807 return (0); 5808 } 5809 5810 void 5811 expand_eth_rule(struct pfctl_eth_rule *r, 5812 struct node_if *interfaces, struct node_etherproto *protos, 5813 struct node_mac *srcs, struct node_mac *dsts, 5814 struct node_host *ipsrcs, struct node_host *ipdsts, 5815 const char *bridge_to, const char *anchor_call) 5816 { 5817 char tagname[PF_TAG_NAME_SIZE]; 5818 char match_tagname[PF_TAG_NAME_SIZE]; 5819 char qname[PF_QNAME_SIZE]; 5820 5821 if (strlcpy(tagname, r->tagname, sizeof(tagname)) >= sizeof(tagname)) 5822 errx(1, "expand_eth_rule: tagname"); 5823 if (strlcpy(match_tagname, r->match_tagname, sizeof(match_tagname)) >= 5824 sizeof(match_tagname)) 5825 errx(1, "expand_eth_rule: match_tagname"); 5826 if (strlcpy(qname, r->qname, sizeof(qname)) >= sizeof(qname)) 5827 errx(1, "expand_eth_rule: qname"); 5828 5829 LOOP_THROUGH(struct node_if, interface, interfaces, 5830 LOOP_THROUGH(struct node_etherproto, proto, protos, 5831 LOOP_THROUGH(struct node_mac, src, srcs, 5832 LOOP_THROUGH(struct node_mac, dst, dsts, 5833 LOOP_THROUGH(struct node_host, ipsrc, ipsrcs, 5834 LOOP_THROUGH(struct node_host, ipdst, ipdsts, 5835 strlcpy(r->ifname, interface->ifname, 5836 sizeof(r->ifname)); 5837 r->ifnot = interface->not; 5838 r->proto = proto->proto; 5839 if (!r->proto && ipsrc->af) 5840 r->proto = pf_af_to_proto(ipsrc->af); 5841 else if (!r->proto && ipdst->af) 5842 r->proto = pf_af_to_proto(ipdst->af); 5843 bcopy(src->mac, r->src.addr, ETHER_ADDR_LEN); 5844 bcopy(src->mask, r->src.mask, ETHER_ADDR_LEN); 5845 r->src.neg = src->neg; 5846 r->src.isset = src->isset; 5847 r->ipsrc.addr = ipsrc->addr; 5848 r->ipsrc.neg = ipsrc->not; 5849 r->ipdst.addr = ipdst->addr; 5850 r->ipdst.neg = ipdst->not; 5851 bcopy(dst->mac, r->dst.addr, ETHER_ADDR_LEN); 5852 bcopy(dst->mask, r->dst.mask, ETHER_ADDR_LEN); 5853 r->dst.neg = dst->neg; 5854 r->dst.isset = dst->isset; 5855 r->nr = pf->eastack[pf->asd]->match++; 5856 5857 if (strlcpy(r->tagname, tagname, sizeof(r->tagname)) >= 5858 sizeof(r->tagname)) 5859 errx(1, "expand_eth_rule: r->tagname"); 5860 if (strlcpy(r->match_tagname, match_tagname, 5861 sizeof(r->match_tagname)) >= sizeof(r->match_tagname)) 5862 errx(1, "expand_eth_rule: r->match_tagname"); 5863 if (strlcpy(r->qname, qname, sizeof(r->qname)) >= sizeof(r->qname)) 5864 errx(1, "expand_eth_rule: r->qname"); 5865 5866 if (bridge_to) 5867 strlcpy(r->bridge_to, bridge_to, sizeof(r->bridge_to)); 5868 5869 pfctl_append_eth_rule(pf, r, anchor_call); 5870 )))))); 5871 5872 FREE_LIST(struct node_if, interfaces); 5873 FREE_LIST(struct node_etherproto, protos); 5874 FREE_LIST(struct node_mac, srcs); 5875 FREE_LIST(struct node_mac, dsts); 5876 FREE_LIST(struct node_host, ipsrcs); 5877 FREE_LIST(struct node_host, ipdsts); 5878 } 5879 5880 void 5881 expand_rule(struct pfctl_rule *r, 5882 struct node_if *interfaces, struct node_host *rpool_hosts, 5883 struct node_proto *protos, struct node_os *src_oses, 5884 struct node_host *src_hosts, struct node_port *src_ports, 5885 struct node_host *dst_hosts, struct node_port *dst_ports, 5886 struct node_uid *uids, struct node_gid *gids, struct node_icmp *icmp_types, 5887 const char *anchor_call) 5888 { 5889 sa_family_t af = r->af; 5890 int added = 0, error = 0; 5891 char ifname[IF_NAMESIZE]; 5892 char label[PF_RULE_MAX_LABEL_COUNT][PF_RULE_LABEL_SIZE]; 5893 char tagname[PF_TAG_NAME_SIZE]; 5894 char match_tagname[PF_TAG_NAME_SIZE]; 5895 struct pf_pooladdr *pa; 5896 struct node_host *h; 5897 u_int8_t flags, flagset, keep_state; 5898 5899 memcpy(label, r->label, sizeof(r->label)); 5900 assert(sizeof(r->label) == sizeof(label)); 5901 if (strlcpy(tagname, r->tagname, sizeof(tagname)) >= sizeof(tagname)) 5902 errx(1, "expand_rule: strlcpy"); 5903 if (strlcpy(match_tagname, r->match_tagname, sizeof(match_tagname)) >= 5904 sizeof(match_tagname)) 5905 errx(1, "expand_rule: strlcpy"); 5906 flags = r->flags; 5907 flagset = r->flagset; 5908 keep_state = r->keep_state; 5909 5910 LOOP_THROUGH(struct node_if, interface, interfaces, 5911 LOOP_THROUGH(struct node_proto, proto, protos, 5912 LOOP_THROUGH(struct node_icmp, icmp_type, icmp_types, 5913 LOOP_THROUGH(struct node_host, src_host, src_hosts, 5914 LOOP_THROUGH(struct node_port, src_port, src_ports, 5915 LOOP_THROUGH(struct node_os, src_os, src_oses, 5916 LOOP_THROUGH(struct node_host, dst_host, dst_hosts, 5917 LOOP_THROUGH(struct node_port, dst_port, dst_ports, 5918 LOOP_THROUGH(struct node_uid, uid, uids, 5919 LOOP_THROUGH(struct node_gid, gid, gids, 5920 5921 r->af = af; 5922 /* for link-local IPv6 address, interface must match up */ 5923 if ((r->af && src_host->af && r->af != src_host->af) || 5924 (r->af && dst_host->af && r->af != dst_host->af) || 5925 (src_host->af && dst_host->af && 5926 src_host->af != dst_host->af) || 5927 (src_host->ifindex && dst_host->ifindex && 5928 src_host->ifindex != dst_host->ifindex) || 5929 (src_host->ifindex && *interface->ifname && 5930 src_host->ifindex != if_nametoindex(interface->ifname)) || 5931 (dst_host->ifindex && *interface->ifname && 5932 dst_host->ifindex != if_nametoindex(interface->ifname))) 5933 continue; 5934 if (!r->af && src_host->af) 5935 r->af = src_host->af; 5936 else if (!r->af && dst_host->af) 5937 r->af = dst_host->af; 5938 5939 if (*interface->ifname) 5940 strlcpy(r->ifname, interface->ifname, 5941 sizeof(r->ifname)); 5942 else if (if_indextoname(src_host->ifindex, ifname)) 5943 strlcpy(r->ifname, ifname, sizeof(r->ifname)); 5944 else if (if_indextoname(dst_host->ifindex, ifname)) 5945 strlcpy(r->ifname, ifname, sizeof(r->ifname)); 5946 else 5947 memset(r->ifname, '\0', sizeof(r->ifname)); 5948 5949 memcpy(r->label, label, sizeof(r->label)); 5950 if (strlcpy(r->tagname, tagname, sizeof(r->tagname)) >= 5951 sizeof(r->tagname)) 5952 errx(1, "expand_rule: strlcpy"); 5953 if (strlcpy(r->match_tagname, match_tagname, 5954 sizeof(r->match_tagname)) >= sizeof(r->match_tagname)) 5955 errx(1, "expand_rule: strlcpy"); 5956 5957 error += check_netmask(src_host, r->af); 5958 error += check_netmask(dst_host, r->af); 5959 5960 r->ifnot = interface->not; 5961 r->proto = proto->proto; 5962 r->src.addr = src_host->addr; 5963 r->src.neg = src_host->not; 5964 r->src.port[0] = src_port->port[0]; 5965 r->src.port[1] = src_port->port[1]; 5966 r->src.port_op = src_port->op; 5967 r->dst.addr = dst_host->addr; 5968 r->dst.neg = dst_host->not; 5969 r->dst.port[0] = dst_port->port[0]; 5970 r->dst.port[1] = dst_port->port[1]; 5971 r->dst.port_op = dst_port->op; 5972 r->uid.op = uid->op; 5973 r->uid.uid[0] = uid->uid[0]; 5974 r->uid.uid[1] = uid->uid[1]; 5975 r->gid.op = gid->op; 5976 r->gid.gid[0] = gid->gid[0]; 5977 r->gid.gid[1] = gid->gid[1]; 5978 r->type = icmp_type->type; 5979 r->code = icmp_type->code; 5980 5981 if ((keep_state == PF_STATE_MODULATE || 5982 keep_state == PF_STATE_SYNPROXY) && 5983 r->proto && r->proto != IPPROTO_TCP) 5984 r->keep_state = PF_STATE_NORMAL; 5985 else 5986 r->keep_state = keep_state; 5987 5988 if (r->proto && r->proto != IPPROTO_TCP) { 5989 r->flags = 0; 5990 r->flagset = 0; 5991 } else { 5992 r->flags = flags; 5993 r->flagset = flagset; 5994 } 5995 if (icmp_type->proto && r->proto != icmp_type->proto) { 5996 yyerror("icmp-type mismatch"); 5997 error++; 5998 } 5999 6000 if (src_os && src_os->os) { 6001 r->os_fingerprint = pfctl_get_fingerprint(src_os->os); 6002 if ((pf->opts & PF_OPT_VERBOSE2) && 6003 r->os_fingerprint == PF_OSFP_NOMATCH) 6004 fprintf(stderr, 6005 "warning: unknown '%s' OS fingerprint\n", 6006 src_os->os); 6007 } else { 6008 r->os_fingerprint = PF_OSFP_ANY; 6009 } 6010 6011 TAILQ_INIT(&r->rpool.list); 6012 for (h = rpool_hosts; h != NULL; h = h->next) { 6013 pa = calloc(1, sizeof(struct pf_pooladdr)); 6014 if (pa == NULL) 6015 err(1, "expand_rule: calloc"); 6016 pa->addr = h->addr; 6017 if (h->ifname != NULL) { 6018 if (strlcpy(pa->ifname, h->ifname, 6019 sizeof(pa->ifname)) >= 6020 sizeof(pa->ifname)) 6021 errx(1, "expand_rule: strlcpy"); 6022 } else 6023 pa->ifname[0] = 0; 6024 TAILQ_INSERT_TAIL(&r->rpool.list, pa, entries); 6025 } 6026 6027 if (rule_consistent(r, anchor_call[0]) < 0 || error) 6028 yyerror("skipping rule due to errors"); 6029 else { 6030 r->nr = pf->astack[pf->asd]->match++; 6031 pfctl_append_rule(pf, r, anchor_call); 6032 added++; 6033 } 6034 6035 )))))))))); 6036 6037 FREE_LIST(struct node_if, interfaces); 6038 FREE_LIST(struct node_proto, protos); 6039 FREE_LIST(struct node_host, src_hosts); 6040 FREE_LIST(struct node_port, src_ports); 6041 FREE_LIST(struct node_os, src_oses); 6042 FREE_LIST(struct node_host, dst_hosts); 6043 FREE_LIST(struct node_port, dst_ports); 6044 FREE_LIST(struct node_uid, uids); 6045 FREE_LIST(struct node_gid, gids); 6046 FREE_LIST(struct node_icmp, icmp_types); 6047 FREE_LIST(struct node_host, rpool_hosts); 6048 6049 if (!added) 6050 yyerror("rule expands to no valid combination"); 6051 } 6052 6053 int 6054 expand_skip_interface(struct node_if *interfaces) 6055 { 6056 int errs = 0; 6057 6058 if (!interfaces || (!interfaces->next && !interfaces->not && 6059 !strcmp(interfaces->ifname, "none"))) { 6060 if (pf->opts & PF_OPT_VERBOSE) 6061 printf("set skip on none\n"); 6062 errs = pfctl_set_interface_flags(pf, "", PFI_IFLAG_SKIP, 0); 6063 return (errs); 6064 } 6065 6066 if (pf->opts & PF_OPT_VERBOSE) 6067 printf("set skip on {"); 6068 LOOP_THROUGH(struct node_if, interface, interfaces, 6069 if (pf->opts & PF_OPT_VERBOSE) 6070 printf(" %s", interface->ifname); 6071 if (interface->not) { 6072 yyerror("skip on ! <interface> is not supported"); 6073 errs++; 6074 } else 6075 errs += pfctl_set_interface_flags(pf, 6076 interface->ifname, PFI_IFLAG_SKIP, 1); 6077 ); 6078 if (pf->opts & PF_OPT_VERBOSE) 6079 printf(" }\n"); 6080 6081 FREE_LIST(struct node_if, interfaces); 6082 6083 if (errs) 6084 return (1); 6085 else 6086 return (0); 6087 } 6088 6089 #undef FREE_LIST 6090 #undef LOOP_THROUGH 6091 6092 int 6093 check_rulestate(int desired_state) 6094 { 6095 if (require_order && (rulestate > desired_state)) { 6096 yyerror("Rules must be in order: options, ethernet, " 6097 "normalization, queueing, translation, filtering"); 6098 return (1); 6099 } 6100 rulestate = desired_state; 6101 return (0); 6102 } 6103 6104 int 6105 kw_cmp(const void *k, const void *e) 6106 { 6107 return (strcmp(k, ((const struct keywords *)e)->k_name)); 6108 } 6109 6110 int 6111 lookup(char *s) 6112 { 6113 /* this has to be sorted always */ 6114 static const struct keywords keywords[] = { 6115 { "all", ALL}, 6116 { "allow-opts", ALLOWOPTS}, 6117 { "altq", ALTQ}, 6118 { "anchor", ANCHOR}, 6119 { "antispoof", ANTISPOOF}, 6120 { "any", ANY}, 6121 { "bandwidth", BANDWIDTH}, 6122 { "binat", BINAT}, 6123 { "binat-anchor", BINATANCHOR}, 6124 { "bitmask", BITMASK}, 6125 { "block", BLOCK}, 6126 { "block-policy", BLOCKPOLICY}, 6127 { "bridge-to", BRIDGE_TO}, 6128 { "buckets", BUCKETS}, 6129 { "cbq", CBQ}, 6130 { "code", CODE}, 6131 { "codelq", CODEL}, 6132 { "debug", DEBUG}, 6133 { "divert-reply", DIVERTREPLY}, 6134 { "divert-to", DIVERTTO}, 6135 { "dnpipe", DNPIPE}, 6136 { "dnqueue", DNQUEUE}, 6137 { "drop", DROP}, 6138 { "dup-to", DUPTO}, 6139 { "ether", ETHER}, 6140 { "fail-policy", FAILPOLICY}, 6141 { "fairq", FAIRQ}, 6142 { "fastroute", FASTROUTE}, 6143 { "file", FILENAME}, 6144 { "fingerprints", FINGERPRINTS}, 6145 { "flags", FLAGS}, 6146 { "floating", FLOATING}, 6147 { "flush", FLUSH}, 6148 { "for", FOR}, 6149 { "fragment", FRAGMENT}, 6150 { "from", FROM}, 6151 { "global", GLOBAL}, 6152 { "group", GROUP}, 6153 { "hfsc", HFSC}, 6154 { "hogs", HOGS}, 6155 { "hostid", HOSTID}, 6156 { "icmp-type", ICMPTYPE}, 6157 { "icmp6-type", ICMP6TYPE}, 6158 { "if-bound", IFBOUND}, 6159 { "in", IN}, 6160 { "include", INCLUDE}, 6161 { "inet", INET}, 6162 { "inet6", INET6}, 6163 { "interval", INTERVAL}, 6164 { "keep", KEEP}, 6165 { "keepcounters", KEEPCOUNTERS}, 6166 { "l3", L3}, 6167 { "label", LABEL}, 6168 { "limit", LIMIT}, 6169 { "linkshare", LINKSHARE}, 6170 { "load", LOAD}, 6171 { "log", LOG}, 6172 { "loginterface", LOGINTERFACE}, 6173 { "map-e-portset", MAPEPORTSET}, 6174 { "match", MATCH}, 6175 { "max", MAXIMUM}, 6176 { "max-mss", MAXMSS}, 6177 { "max-src-conn", MAXSRCCONN}, 6178 { "max-src-conn-rate", MAXSRCCONNRATE}, 6179 { "max-src-nodes", MAXSRCNODES}, 6180 { "max-src-states", MAXSRCSTATES}, 6181 { "min-ttl", MINTTL}, 6182 { "modulate", MODULATE}, 6183 { "nat", NAT}, 6184 { "nat-anchor", NATANCHOR}, 6185 { "no", NO}, 6186 { "no-df", NODF}, 6187 { "no-route", NOROUTE}, 6188 { "no-sync", NOSYNC}, 6189 { "on", ON}, 6190 { "optimization", OPTIMIZATION}, 6191 { "os", OS}, 6192 { "out", OUT}, 6193 { "overload", OVERLOAD}, 6194 { "pass", PASS}, 6195 { "port", PORT}, 6196 { "prio", PRIO}, 6197 { "priority", PRIORITY}, 6198 { "priq", PRIQ}, 6199 { "probability", PROBABILITY}, 6200 { "proto", PROTO}, 6201 { "qlimit", QLIMIT}, 6202 { "queue", QUEUE}, 6203 { "quick", QUICK}, 6204 { "random", RANDOM}, 6205 { "random-id", RANDOMID}, 6206 { "rdr", RDR}, 6207 { "rdr-anchor", RDRANCHOR}, 6208 { "realtime", REALTIME}, 6209 { "reassemble", REASSEMBLE}, 6210 { "reply-to", REPLYTO}, 6211 { "require-order", REQUIREORDER}, 6212 { "return", RETURN}, 6213 { "return-icmp", RETURNICMP}, 6214 { "return-icmp6", RETURNICMP6}, 6215 { "return-rst", RETURNRST}, 6216 { "ridentifier", RIDENTIFIER}, 6217 { "round-robin", ROUNDROBIN}, 6218 { "route", ROUTE}, 6219 { "route-to", ROUTETO}, 6220 { "rtable", RTABLE}, 6221 { "rule", RULE}, 6222 { "ruleset-optimization", RULESET_OPTIMIZATION}, 6223 { "scrub", SCRUB}, 6224 { "set", SET}, 6225 { "set-tos", SETTOS}, 6226 { "skip", SKIP}, 6227 { "sloppy", SLOPPY}, 6228 { "source-hash", SOURCEHASH}, 6229 { "source-track", SOURCETRACK}, 6230 { "state", STATE}, 6231 { "state-defaults", STATEDEFAULTS}, 6232 { "state-policy", STATEPOLICY}, 6233 { "static-port", STATICPORT}, 6234 { "sticky-address", STICKYADDRESS}, 6235 { "syncookies", SYNCOOKIES}, 6236 { "synproxy", SYNPROXY}, 6237 { "table", TABLE}, 6238 { "tag", TAG}, 6239 { "tagged", TAGGED}, 6240 { "target", TARGET}, 6241 { "tbrsize", TBRSIZE}, 6242 { "timeout", TIMEOUT}, 6243 { "to", TO}, 6244 { "tos", TOS}, 6245 { "ttl", TTL}, 6246 { "upperlimit", UPPERLIMIT}, 6247 { "urpf-failed", URPFFAILED}, 6248 { "user", USER}, 6249 }; 6250 const struct keywords *p; 6251 6252 p = bsearch(s, keywords, sizeof(keywords)/sizeof(keywords[0]), 6253 sizeof(keywords[0]), kw_cmp); 6254 6255 if (p) { 6256 if (debug > 1) 6257 fprintf(stderr, "%s: %d\n", s, p->k_val); 6258 return (p->k_val); 6259 } else { 6260 if (debug > 1) 6261 fprintf(stderr, "string: %s\n", s); 6262 return (STRING); 6263 } 6264 } 6265 6266 #define MAXPUSHBACK 128 6267 6268 static char *parsebuf; 6269 static int parseindex; 6270 static char pushback_buffer[MAXPUSHBACK]; 6271 static int pushback_index = 0; 6272 6273 int 6274 lgetc(int quotec) 6275 { 6276 int c, next; 6277 6278 if (parsebuf) { 6279 /* Read character from the parsebuffer instead of input. */ 6280 if (parseindex >= 0) { 6281 c = parsebuf[parseindex++]; 6282 if (c != '\0') 6283 return (c); 6284 parsebuf = NULL; 6285 } else 6286 parseindex++; 6287 } 6288 6289 if (pushback_index) 6290 return (pushback_buffer[--pushback_index]); 6291 6292 if (quotec) { 6293 if ((c = getc(file->stream)) == EOF) { 6294 yyerror("reached end of file while parsing quoted string"); 6295 if (popfile() == EOF) 6296 return (EOF); 6297 return (quotec); 6298 } 6299 return (c); 6300 } 6301 6302 while ((c = getc(file->stream)) == '\\') { 6303 next = getc(file->stream); 6304 if (next != '\n') { 6305 c = next; 6306 break; 6307 } 6308 yylval.lineno = file->lineno; 6309 file->lineno++; 6310 } 6311 6312 while (c == EOF) { 6313 if (popfile() == EOF) 6314 return (EOF); 6315 c = getc(file->stream); 6316 } 6317 return (c); 6318 } 6319 6320 int 6321 lungetc(int c) 6322 { 6323 if (c == EOF) 6324 return (EOF); 6325 if (parsebuf) { 6326 parseindex--; 6327 if (parseindex >= 0) 6328 return (c); 6329 } 6330 if (pushback_index < MAXPUSHBACK-1) 6331 return (pushback_buffer[pushback_index++] = c); 6332 else 6333 return (EOF); 6334 } 6335 6336 int 6337 findeol(void) 6338 { 6339 int c; 6340 6341 parsebuf = NULL; 6342 6343 /* skip to either EOF or the first real EOL */ 6344 while (1) { 6345 if (pushback_index) 6346 c = pushback_buffer[--pushback_index]; 6347 else 6348 c = lgetc(0); 6349 if (c == '\n') { 6350 file->lineno++; 6351 break; 6352 } 6353 if (c == EOF) 6354 break; 6355 } 6356 return (ERROR); 6357 } 6358 6359 int 6360 yylex(void) 6361 { 6362 char buf[8096]; 6363 char *p, *val; 6364 int quotec, next, c; 6365 int token; 6366 6367 top: 6368 p = buf; 6369 while ((c = lgetc(0)) == ' ' || c == '\t') 6370 ; /* nothing */ 6371 6372 yylval.lineno = file->lineno; 6373 if (c == '#') 6374 while ((c = lgetc(0)) != '\n' && c != EOF) 6375 ; /* nothing */ 6376 if (c == '$' && parsebuf == NULL) { 6377 while (1) { 6378 if ((c = lgetc(0)) == EOF) 6379 return (0); 6380 6381 if (p + 1 >= buf + sizeof(buf) - 1) { 6382 yyerror("string too long"); 6383 return (findeol()); 6384 } 6385 if (isalnum(c) || c == '_') { 6386 *p++ = (char)c; 6387 continue; 6388 } 6389 *p = '\0'; 6390 lungetc(c); 6391 break; 6392 } 6393 val = symget(buf); 6394 if (val == NULL) { 6395 yyerror("macro '%s' not defined", buf); 6396 return (findeol()); 6397 } 6398 parsebuf = val; 6399 parseindex = 0; 6400 goto top; 6401 } 6402 6403 switch (c) { 6404 case '\'': 6405 case '"': 6406 quotec = c; 6407 while (1) { 6408 if ((c = lgetc(quotec)) == EOF) 6409 return (0); 6410 if (c == '\n') { 6411 file->lineno++; 6412 continue; 6413 } else if (c == '\\') { 6414 if ((next = lgetc(quotec)) == EOF) 6415 return (0); 6416 if (next == quotec || c == ' ' || c == '\t') 6417 c = next; 6418 else if (next == '\n') { 6419 file->lineno++; 6420 continue; 6421 } 6422 else 6423 lungetc(next); 6424 } else if (c == quotec) { 6425 *p = '\0'; 6426 break; 6427 } 6428 if (p + 1 >= buf + sizeof(buf) - 1) { 6429 yyerror("string too long"); 6430 return (findeol()); 6431 } 6432 *p++ = (char)c; 6433 } 6434 yylval.v.string = strdup(buf); 6435 if (yylval.v.string == NULL) 6436 err(1, "yylex: strdup"); 6437 return (STRING); 6438 case '<': 6439 next = lgetc(0); 6440 if (next == '>') { 6441 yylval.v.i = PF_OP_XRG; 6442 return (PORTBINARY); 6443 } 6444 lungetc(next); 6445 break; 6446 case '>': 6447 next = lgetc(0); 6448 if (next == '<') { 6449 yylval.v.i = PF_OP_IRG; 6450 return (PORTBINARY); 6451 } 6452 lungetc(next); 6453 break; 6454 case '-': 6455 next = lgetc(0); 6456 if (next == '>') 6457 return (ARROW); 6458 lungetc(next); 6459 break; 6460 } 6461 6462 #define allowed_to_end_number(x) \ 6463 (isspace(x) || x == ')' || x ==',' || x == '/' || x == '}' || x == '=') 6464 6465 if (c == '-' || isdigit(c)) { 6466 do { 6467 *p++ = c; 6468 if ((unsigned)(p-buf) >= sizeof(buf)) { 6469 yyerror("string too long"); 6470 return (findeol()); 6471 } 6472 } while ((c = lgetc(0)) != EOF && isdigit(c)); 6473 lungetc(c); 6474 if (p == buf + 1 && buf[0] == '-') 6475 goto nodigits; 6476 if (c == EOF || allowed_to_end_number(c)) { 6477 const char *errstr = NULL; 6478 6479 *p = '\0'; 6480 yylval.v.number = strtonum(buf, LLONG_MIN, 6481 LLONG_MAX, &errstr); 6482 if (errstr) { 6483 yyerror("\"%s\" invalid number: %s", 6484 buf, errstr); 6485 return (findeol()); 6486 } 6487 return (NUMBER); 6488 } else { 6489 nodigits: 6490 while (p > buf + 1) 6491 lungetc(*--p); 6492 c = *--p; 6493 if (c == '-') 6494 return (c); 6495 } 6496 } 6497 6498 #define allowed_in_string(x) \ 6499 (isalnum(x) || (ispunct(x) && x != '(' && x != ')' && \ 6500 x != '{' && x != '}' && x != '<' && x != '>' && \ 6501 x != '!' && x != '=' && x != '/' && x != '#' && \ 6502 x != ',')) 6503 6504 if (isalnum(c) || c == ':' || c == '_') { 6505 do { 6506 *p++ = c; 6507 if ((unsigned)(p-buf) >= sizeof(buf)) { 6508 yyerror("string too long"); 6509 return (findeol()); 6510 } 6511 } while ((c = lgetc(0)) != EOF && (allowed_in_string(c))); 6512 lungetc(c); 6513 *p = '\0'; 6514 if ((token = lookup(buf)) == STRING) 6515 if ((yylval.v.string = strdup(buf)) == NULL) 6516 err(1, "yylex: strdup"); 6517 return (token); 6518 } 6519 if (c == '\n') { 6520 yylval.lineno = file->lineno; 6521 file->lineno++; 6522 } 6523 if (c == EOF) 6524 return (0); 6525 return (c); 6526 } 6527 6528 int 6529 check_file_secrecy(int fd, const char *fname) 6530 { 6531 struct stat st; 6532 6533 if (fstat(fd, &st)) { 6534 warn("cannot stat %s", fname); 6535 return (-1); 6536 } 6537 if (st.st_uid != 0 && st.st_uid != getuid()) { 6538 warnx("%s: owner not root or current user", fname); 6539 return (-1); 6540 } 6541 if (st.st_mode & (S_IRWXG | S_IRWXO)) { 6542 warnx("%s: group/world readable/writeable", fname); 6543 return (-1); 6544 } 6545 return (0); 6546 } 6547 6548 struct file * 6549 pushfile(const char *name, int secret) 6550 { 6551 struct file *nfile; 6552 6553 if ((nfile = calloc(1, sizeof(struct file))) == NULL || 6554 (nfile->name = strdup(name)) == NULL) { 6555 warn("malloc"); 6556 return (NULL); 6557 } 6558 if (TAILQ_FIRST(&files) == NULL && strcmp(nfile->name, "-") == 0) { 6559 nfile->stream = stdin; 6560 free(nfile->name); 6561 if ((nfile->name = strdup("stdin")) == NULL) { 6562 warn("strdup"); 6563 free(nfile); 6564 return (NULL); 6565 } 6566 } else if ((nfile->stream = fopen(nfile->name, "r")) == NULL) { 6567 warn("%s", nfile->name); 6568 free(nfile->name); 6569 free(nfile); 6570 return (NULL); 6571 } else if (secret && 6572 check_file_secrecy(fileno(nfile->stream), nfile->name)) { 6573 fclose(nfile->stream); 6574 free(nfile->name); 6575 free(nfile); 6576 return (NULL); 6577 } 6578 nfile->lineno = 1; 6579 TAILQ_INSERT_TAIL(&files, nfile, entry); 6580 return (nfile); 6581 } 6582 6583 int 6584 popfile(void) 6585 { 6586 struct file *prev; 6587 6588 if ((prev = TAILQ_PREV(file, files, entry)) != NULL) { 6589 prev->errors += file->errors; 6590 TAILQ_REMOVE(&files, file, entry); 6591 fclose(file->stream); 6592 free(file->name); 6593 free(file); 6594 file = prev; 6595 return (0); 6596 } 6597 return (EOF); 6598 } 6599 6600 int 6601 parse_config(char *filename, struct pfctl *xpf) 6602 { 6603 int errors = 0; 6604 struct sym *sym; 6605 6606 pf = xpf; 6607 errors = 0; 6608 rulestate = PFCTL_STATE_NONE; 6609 returnicmpdefault = (ICMP_UNREACH << 8) | ICMP_UNREACH_PORT; 6610 returnicmp6default = 6611 (ICMP6_DST_UNREACH << 8) | ICMP6_DST_UNREACH_NOPORT; 6612 blockpolicy = PFRULE_DROP; 6613 failpolicy = PFRULE_DROP; 6614 require_order = 1; 6615 6616 if ((file = pushfile(filename, 0)) == NULL) { 6617 warn("cannot open the main config file!"); 6618 return (-1); 6619 } 6620 6621 yyparse(); 6622 errors = file->errors; 6623 popfile(); 6624 6625 /* Free macros and check which have not been used. */ 6626 while ((sym = TAILQ_FIRST(&symhead))) { 6627 if ((pf->opts & PF_OPT_VERBOSE2) && !sym->used) 6628 fprintf(stderr, "warning: macro '%s' not " 6629 "used\n", sym->nam); 6630 free(sym->nam); 6631 free(sym->val); 6632 TAILQ_REMOVE(&symhead, sym, entry); 6633 free(sym); 6634 } 6635 6636 return (errors ? -1 : 0); 6637 } 6638 6639 int 6640 symset(const char *nam, const char *val, int persist) 6641 { 6642 struct sym *sym; 6643 6644 for (sym = TAILQ_FIRST(&symhead); sym && strcmp(nam, sym->nam); 6645 sym = TAILQ_NEXT(sym, entry)) 6646 ; /* nothing */ 6647 6648 if (sym != NULL) { 6649 if (sym->persist == 1) 6650 return (0); 6651 else { 6652 free(sym->nam); 6653 free(sym->val); 6654 TAILQ_REMOVE(&symhead, sym, entry); 6655 free(sym); 6656 } 6657 } 6658 if ((sym = calloc(1, sizeof(*sym))) == NULL) 6659 return (-1); 6660 6661 sym->nam = strdup(nam); 6662 if (sym->nam == NULL) { 6663 free(sym); 6664 return (-1); 6665 } 6666 sym->val = strdup(val); 6667 if (sym->val == NULL) { 6668 free(sym->nam); 6669 free(sym); 6670 return (-1); 6671 } 6672 sym->used = 0; 6673 sym->persist = persist; 6674 TAILQ_INSERT_TAIL(&symhead, sym, entry); 6675 return (0); 6676 } 6677 6678 int 6679 pfctl_cmdline_symset(char *s) 6680 { 6681 char *sym, *val; 6682 int ret; 6683 6684 if ((val = strrchr(s, '=')) == NULL) 6685 return (-1); 6686 6687 if ((sym = malloc(strlen(s) - strlen(val) + 1)) == NULL) 6688 err(1, "pfctl_cmdline_symset: malloc"); 6689 6690 strlcpy(sym, s, strlen(s) - strlen(val) + 1); 6691 6692 ret = symset(sym, val + 1, 1); 6693 free(sym); 6694 6695 return (ret); 6696 } 6697 6698 char * 6699 symget(const char *nam) 6700 { 6701 struct sym *sym; 6702 6703 TAILQ_FOREACH(sym, &symhead, entry) 6704 if (strcmp(nam, sym->nam) == 0) { 6705 sym->used = 1; 6706 return (sym->val); 6707 } 6708 return (NULL); 6709 } 6710 6711 void 6712 mv_rules(struct pfctl_ruleset *src, struct pfctl_ruleset *dst) 6713 { 6714 int i; 6715 struct pfctl_rule *r; 6716 6717 for (i = 0; i < PF_RULESET_MAX; ++i) { 6718 while ((r = TAILQ_FIRST(src->rules[i].active.ptr)) 6719 != NULL) { 6720 TAILQ_REMOVE(src->rules[i].active.ptr, r, entries); 6721 TAILQ_INSERT_TAIL(dst->rules[i].active.ptr, r, entries); 6722 dst->anchor->match++; 6723 } 6724 src->anchor->match = 0; 6725 while ((r = TAILQ_FIRST(src->rules[i].inactive.ptr)) 6726 != NULL) { 6727 TAILQ_REMOVE(src->rules[i].inactive.ptr, r, entries); 6728 TAILQ_INSERT_TAIL(dst->rules[i].inactive.ptr, 6729 r, entries); 6730 } 6731 } 6732 } 6733 6734 void 6735 mv_eth_rules(struct pfctl_eth_ruleset *src, struct pfctl_eth_ruleset *dst) 6736 { 6737 struct pfctl_eth_rule *r; 6738 6739 while ((r = TAILQ_FIRST(&src->rules)) != NULL) { 6740 TAILQ_REMOVE(&src->rules, r, entries); 6741 TAILQ_INSERT_TAIL(&dst->rules, r, entries); 6742 dst->anchor->match++; 6743 } 6744 src->anchor->match = 0; 6745 } 6746 6747 void 6748 decide_address_family(struct node_host *n, sa_family_t *af) 6749 { 6750 if (*af != 0 || n == NULL) 6751 return; 6752 *af = n->af; 6753 while ((n = n->next) != NULL) { 6754 if (n->af != *af) { 6755 *af = 0; 6756 return; 6757 } 6758 } 6759 } 6760 6761 void 6762 remove_invalid_hosts(struct node_host **nh, sa_family_t *af) 6763 { 6764 struct node_host *n = *nh, *prev = NULL; 6765 6766 while (n != NULL) { 6767 if (*af && n->af && n->af != *af) { 6768 /* unlink and free n */ 6769 struct node_host *next = n->next; 6770 6771 /* adjust tail pointer */ 6772 if (n == (*nh)->tail) 6773 (*nh)->tail = prev; 6774 /* adjust previous node's next pointer */ 6775 if (prev == NULL) 6776 *nh = next; 6777 else 6778 prev->next = next; 6779 /* free node */ 6780 if (n->ifname != NULL) 6781 free(n->ifname); 6782 free(n); 6783 n = next; 6784 } else { 6785 if (n->af && !*af) 6786 *af = n->af; 6787 prev = n; 6788 n = n->next; 6789 } 6790 } 6791 } 6792 6793 int 6794 invalid_redirect(struct node_host *nh, sa_family_t af) 6795 { 6796 if (!af) { 6797 struct node_host *n; 6798 6799 /* tables and dyniftl are ok without an address family */ 6800 for (n = nh; n != NULL; n = n->next) { 6801 if (n->addr.type != PF_ADDR_TABLE && 6802 n->addr.type != PF_ADDR_DYNIFTL) { 6803 yyerror("address family not given and " 6804 "translation address expands to multiple " 6805 "address families"); 6806 return (1); 6807 } 6808 } 6809 } 6810 if (nh == NULL) { 6811 yyerror("no translation address with matching address family " 6812 "found."); 6813 return (1); 6814 } 6815 return (0); 6816 } 6817 6818 int 6819 atoul(char *s, u_long *ulvalp) 6820 { 6821 u_long ulval; 6822 char *ep; 6823 6824 errno = 0; 6825 ulval = strtoul(s, &ep, 0); 6826 if (s[0] == '\0' || *ep != '\0') 6827 return (-1); 6828 if (errno == ERANGE && ulval == ULONG_MAX) 6829 return (-1); 6830 *ulvalp = ulval; 6831 return (0); 6832 } 6833 6834 int 6835 getservice(char *n) 6836 { 6837 struct servent *s; 6838 u_long ulval; 6839 6840 if (atoul(n, &ulval) == 0) { 6841 if (ulval > 65535) { 6842 yyerror("illegal port value %lu", ulval); 6843 return (-1); 6844 } 6845 return (htons(ulval)); 6846 } else { 6847 s = getservbyname(n, "tcp"); 6848 if (s == NULL) 6849 s = getservbyname(n, "udp"); 6850 if (s == NULL) { 6851 yyerror("unknown port %s", n); 6852 return (-1); 6853 } 6854 return (s->s_port); 6855 } 6856 } 6857 6858 int 6859 rule_label(struct pfctl_rule *r, char *s[PF_RULE_MAX_LABEL_COUNT]) 6860 { 6861 for (int i = 0; i < PF_RULE_MAX_LABEL_COUNT; i++) { 6862 if (s[i] == NULL) 6863 return (0); 6864 6865 if (strlcpy(r->label[i], s[i], sizeof(r->label[0])) >= 6866 sizeof(r->label[0])) { 6867 yyerror("rule label too long (max %d chars)", 6868 sizeof(r->label[0])-1); 6869 return (-1); 6870 } 6871 } 6872 return (0); 6873 } 6874 6875 u_int16_t 6876 parseicmpspec(char *w, sa_family_t af) 6877 { 6878 const struct icmpcodeent *p; 6879 u_long ulval; 6880 u_int8_t icmptype; 6881 6882 if (af == AF_INET) 6883 icmptype = returnicmpdefault >> 8; 6884 else 6885 icmptype = returnicmp6default >> 8; 6886 6887 if (atoul(w, &ulval) == -1) { 6888 if ((p = geticmpcodebyname(icmptype, w, af)) == NULL) { 6889 yyerror("unknown icmp code %s", w); 6890 return (0); 6891 } 6892 ulval = p->code; 6893 } 6894 if (ulval > 255) { 6895 yyerror("invalid icmp code %lu", ulval); 6896 return (0); 6897 } 6898 return (icmptype << 8 | ulval); 6899 } 6900 6901 int 6902 parseport(char *port, struct range *r, int extensions) 6903 { 6904 char *p = strchr(port, ':'); 6905 6906 if (p == NULL) { 6907 if ((r->a = getservice(port)) == -1) 6908 return (-1); 6909 r->b = 0; 6910 r->t = PF_OP_NONE; 6911 return (0); 6912 } 6913 if ((extensions & PPORT_STAR) && !strcmp(p+1, "*")) { 6914 *p = 0; 6915 if ((r->a = getservice(port)) == -1) 6916 return (-1); 6917 r->b = 0; 6918 r->t = PF_OP_IRG; 6919 return (0); 6920 } 6921 if ((extensions & PPORT_RANGE)) { 6922 *p++ = 0; 6923 if ((r->a = getservice(port)) == -1 || 6924 (r->b = getservice(p)) == -1) 6925 return (-1); 6926 if (r->a == r->b) { 6927 r->b = 0; 6928 r->t = PF_OP_NONE; 6929 } else 6930 r->t = PF_OP_RRG; 6931 return (0); 6932 } 6933 return (-1); 6934 } 6935 6936 int 6937 pfctl_load_anchors(int dev, struct pfctl *pf, struct pfr_buffer *trans) 6938 { 6939 struct loadanchors *la; 6940 6941 TAILQ_FOREACH(la, &loadanchorshead, entries) { 6942 if (pf->opts & PF_OPT_VERBOSE) 6943 fprintf(stderr, "\nLoading anchor %s from %s\n", 6944 la->anchorname, la->filename); 6945 if (pfctl_rules(dev, la->filename, pf->opts, pf->optimize, 6946 la->anchorname, trans) == -1) 6947 return (-1); 6948 } 6949 6950 return (0); 6951 } 6952 6953 int 6954 kw_casecmp(const void *k, const void *e) 6955 { 6956 return (strcasecmp(k, ((const struct keywords *)e)->k_name)); 6957 } 6958 6959 int 6960 map_tos(char *s, int *val) 6961 { 6962 /* DiffServ Codepoints and other TOS mappings */ 6963 const struct keywords toswords[] = { 6964 { "af11", IPTOS_DSCP_AF11 }, 6965 { "af12", IPTOS_DSCP_AF12 }, 6966 { "af13", IPTOS_DSCP_AF13 }, 6967 { "af21", IPTOS_DSCP_AF21 }, 6968 { "af22", IPTOS_DSCP_AF22 }, 6969 { "af23", IPTOS_DSCP_AF23 }, 6970 { "af31", IPTOS_DSCP_AF31 }, 6971 { "af32", IPTOS_DSCP_AF32 }, 6972 { "af33", IPTOS_DSCP_AF33 }, 6973 { "af41", IPTOS_DSCP_AF41 }, 6974 { "af42", IPTOS_DSCP_AF42 }, 6975 { "af43", IPTOS_DSCP_AF43 }, 6976 { "critical", IPTOS_PREC_CRITIC_ECP }, 6977 { "cs0", IPTOS_DSCP_CS0 }, 6978 { "cs1", IPTOS_DSCP_CS1 }, 6979 { "cs2", IPTOS_DSCP_CS2 }, 6980 { "cs3", IPTOS_DSCP_CS3 }, 6981 { "cs4", IPTOS_DSCP_CS4 }, 6982 { "cs5", IPTOS_DSCP_CS5 }, 6983 { "cs6", IPTOS_DSCP_CS6 }, 6984 { "cs7", IPTOS_DSCP_CS7 }, 6985 { "ef", IPTOS_DSCP_EF }, 6986 { "inetcontrol", IPTOS_PREC_INTERNETCONTROL }, 6987 { "lowdelay", IPTOS_LOWDELAY }, 6988 { "netcontrol", IPTOS_PREC_NETCONTROL }, 6989 { "reliability", IPTOS_RELIABILITY }, 6990 { "throughput", IPTOS_THROUGHPUT }, 6991 { "va", IPTOS_DSCP_VA } 6992 }; 6993 const struct keywords *p; 6994 6995 p = bsearch(s, toswords, sizeof(toswords)/sizeof(toswords[0]), 6996 sizeof(toswords[0]), kw_casecmp); 6997 6998 if (p) { 6999 *val = p->k_val; 7000 return (1); 7001 } 7002 return (0); 7003 } 7004 7005 int 7006 rt_tableid_max(void) 7007 { 7008 #ifdef __FreeBSD__ 7009 int fibs; 7010 size_t l = sizeof(fibs); 7011 7012 if (sysctlbyname("net.fibs", &fibs, &l, NULL, 0) == -1) 7013 fibs = 16; /* XXX RT_MAXFIBS, at least limit it some. */ 7014 /* 7015 * As the OpenBSD code only compares > and not >= we need to adjust 7016 * here given we only accept values of 0..n and want to avoid #ifdefs 7017 * in the grammar. 7018 */ 7019 return (fibs - 1); 7020 #else 7021 return (RT_TABLEID_MAX); 7022 #endif 7023 } 7024 7025 struct node_mac* 7026 node_mac_from_string(const char *str) 7027 { 7028 struct node_mac *m; 7029 7030 m = calloc(1, sizeof(struct node_mac)); 7031 if (m == NULL) 7032 err(1, "mac: calloc"); 7033 7034 if (sscanf(str, "%02hhx:%02hhx:%02hhx:%02hhx:%02hhx:%02hhx", 7035 &m->mac[0], &m->mac[1], &m->mac[2], &m->mac[3], &m->mac[4], 7036 &m->mac[5]) != 6) { 7037 free(m); 7038 yyerror("invalid MAC address"); 7039 return (NULL); 7040 } 7041 7042 memset(m->mask, 0xff, ETHER_ADDR_LEN); 7043 m->isset = true; 7044 m->next = NULL; 7045 m->tail = m; 7046 7047 return (m); 7048 } 7049 7050 struct node_mac* 7051 node_mac_from_string_masklen(const char *str, int masklen) 7052 { 7053 struct node_mac *m; 7054 7055 if (masklen < 0 || masklen > (ETHER_ADDR_LEN * 8)) { 7056 yyerror("invalid MAC mask length"); 7057 return (NULL); 7058 } 7059 7060 m = node_mac_from_string(str); 7061 if (m == NULL) 7062 return (NULL); 7063 7064 memset(m->mask, 0, ETHER_ADDR_LEN); 7065 for (int i = 0; i < masklen; i++) 7066 m->mask[i / 8] |= 1 << (i % 8); 7067 7068 return (m); 7069 } 7070 7071 struct node_mac* 7072 node_mac_from_string_mask(const char *str, const char *mask) 7073 { 7074 struct node_mac *m; 7075 7076 m = node_mac_from_string(str); 7077 if (m == NULL) 7078 return (NULL); 7079 7080 if (sscanf(mask, "%02hhx:%02hhx:%02hhx:%02hhx:%02hhx:%02hhx", 7081 &m->mask[0], &m->mask[1], &m->mask[2], &m->mask[3], &m->mask[4], 7082 &m->mask[5]) != 6) { 7083 free(m); 7084 yyerror("invalid MAC mask"); 7085 return (NULL); 7086 } 7087 7088 return (m); 7089 } 7090