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 0x0001 229 #define FOM_ICMP 0x0002 230 #define FOM_TOS 0x0004 231 #define FOM_KEEP 0x0008 232 #define FOM_SRCTRACK 0x0010 233 #define FOM_MINTTL 0x0020 234 #define FOM_MAXMSS 0x0040 235 #define FOM_AFTO 0x0080 /* not yet implemmented */ 236 #define FOM_SETTOS 0x0100 237 #define FOM_SCRUB_TCP 0x0200 238 #define FOM_SETPRIO 0x0400 239 #define FOM_ONCE 0x1000 /* not yet implemmented */ 240 #define FOM_PRIO 0x2000 241 #define FOM_SETDELAY 0x4000 242 #define FOM_FRAGCACHE 0x8000 /* does not exist in OpenBSD */ 243 struct node_uid *uid; 244 struct node_gid *gid; 245 struct { 246 u_int8_t b1; 247 u_int8_t b2; 248 u_int16_t w; 249 u_int16_t w2; 250 } flags; 251 struct node_icmp *icmpspec; 252 u_int32_t tos; 253 u_int32_t prob; 254 u_int32_t ridentifier; 255 struct { 256 int action; 257 struct node_state_opt *options; 258 } keep; 259 int fragment; 260 int allowopts; 261 char *label[PF_RULE_MAX_LABEL_COUNT]; 262 int labelcount; 263 struct node_qassign queues; 264 char *tag; 265 char *match_tag; 266 u_int8_t match_tag_not; 267 u_int16_t dnpipe; 268 u_int16_t dnrpipe; 269 u_int32_t free_flags; 270 u_int rtableid; 271 u_int8_t prio; 272 u_int8_t set_prio[2]; 273 struct { 274 struct node_host *addr; 275 u_int16_t port; 276 } divert; 277 /* new-style scrub opts */ 278 int nodf; 279 int minttl; 280 int settos; 281 int randomid; 282 int max_mss; 283 } filter_opts; 284 285 static struct antispoof_opts { 286 char *label[PF_RULE_MAX_LABEL_COUNT]; 287 int labelcount; 288 u_int32_t ridentifier; 289 u_int rtableid; 290 } antispoof_opts; 291 292 static struct scrub_opts { 293 int marker; 294 int nodf; 295 int minttl; 296 int maxmss; 297 int settos; 298 int fragcache; 299 int randomid; 300 int reassemble_tcp; 301 char *match_tag; 302 u_int8_t match_tag_not; 303 u_int rtableid; 304 } scrub_opts; 305 306 static struct queue_opts { 307 int marker; 308 #define QOM_BWSPEC 0x01 309 #define QOM_SCHEDULER 0x02 310 #define QOM_PRIORITY 0x04 311 #define QOM_TBRSIZE 0x08 312 #define QOM_QLIMIT 0x10 313 struct node_queue_bw queue_bwspec; 314 struct node_queue_opt scheduler; 315 int priority; 316 unsigned int tbrsize; 317 int qlimit; 318 } queue_opts; 319 320 static struct table_opts { 321 int flags; 322 int init_addr; 323 struct node_tinithead init_nodes; 324 } table_opts; 325 326 static struct pool_opts { 327 int marker; 328 #define POM_TYPE 0x01 329 #define POM_STICKYADDRESS 0x02 330 u_int8_t opts; 331 int type; 332 int staticport; 333 struct pf_poolhashkey *key; 334 struct pf_mape_portset mape; 335 336 } pool_opts; 337 338 static struct codel_opts codel_opts; 339 static struct node_hfsc_opts hfsc_opts; 340 static struct node_fairq_opts fairq_opts; 341 static struct node_state_opt *keep_state_defaults = NULL; 342 static struct pfctl_watermarks syncookie_opts; 343 344 int disallow_table(struct node_host *, const char *); 345 int disallow_urpf_failed(struct node_host *, const char *); 346 int disallow_alias(struct node_host *, const char *); 347 int rule_consistent(struct pfctl_rule *, int); 348 int filter_consistent(struct pfctl_rule *, int); 349 int nat_consistent(struct pfctl_rule *); 350 int rdr_consistent(struct pfctl_rule *); 351 int process_tabledef(char *, struct table_opts *); 352 void expand_label_str(char *, size_t, const char *, const char *); 353 void expand_label_if(const char *, char *, size_t, const char *); 354 void expand_label_addr(const char *, char *, size_t, sa_family_t, 355 struct pf_rule_addr *); 356 void expand_label_port(const char *, char *, size_t, 357 struct pf_rule_addr *); 358 void expand_label_proto(const char *, char *, size_t, u_int8_t); 359 void expand_label_nr(const char *, char *, size_t, 360 struct pfctl_rule *); 361 void expand_eth_rule(struct pfctl_eth_rule *, 362 struct node_if *, struct node_etherproto *, 363 struct node_mac *, struct node_mac *, 364 struct node_host *, struct node_host *, const char *, 365 const char *); 366 void expand_rule(struct pfctl_rule *, struct node_if *, 367 struct node_host *, struct node_proto *, struct node_os *, 368 struct node_host *, struct node_port *, struct node_host *, 369 struct node_port *, struct node_uid *, struct node_gid *, 370 struct node_icmp *, const char *); 371 int expand_altq(struct pf_altq *, struct node_if *, 372 struct node_queue *, struct node_queue_bw bwspec, 373 struct node_queue_opt *); 374 int expand_queue(struct pf_altq *, struct node_if *, 375 struct node_queue *, struct node_queue_bw, 376 struct node_queue_opt *); 377 int expand_skip_interface(struct node_if *); 378 379 int check_rulestate(int); 380 int getservice(char *); 381 int rule_label(struct pfctl_rule *, char *s[PF_RULE_MAX_LABEL_COUNT]); 382 int eth_rule_label(struct pfctl_eth_rule *, char *s[PF_RULE_MAX_LABEL_COUNT]); 383 int rt_tableid_max(void); 384 385 void mv_rules(struct pfctl_ruleset *, struct pfctl_ruleset *); 386 void mv_eth_rules(struct pfctl_eth_ruleset *, struct pfctl_eth_ruleset *); 387 void decide_address_family(struct node_host *, sa_family_t *); 388 void remove_invalid_hosts(struct node_host **, sa_family_t *); 389 int invalid_redirect(struct node_host *, sa_family_t); 390 u_int16_t parseicmpspec(char *, sa_family_t); 391 int kw_casecmp(const void *, const void *); 392 int map_tos(char *string, int *); 393 struct node_mac* node_mac_from_string(const char *); 394 struct node_mac* node_mac_from_string_masklen(const char *, int); 395 struct node_mac* node_mac_from_string_mask(const char *, const char *); 396 397 static TAILQ_HEAD(loadanchorshead, loadanchors) 398 loadanchorshead = TAILQ_HEAD_INITIALIZER(loadanchorshead); 399 400 struct loadanchors { 401 TAILQ_ENTRY(loadanchors) entries; 402 char *anchorname; 403 char *filename; 404 }; 405 406 typedef struct { 407 union { 408 int64_t number; 409 double probability; 410 int i; 411 char *string; 412 u_int rtableid; 413 struct { 414 u_int8_t b1; 415 u_int8_t b2; 416 u_int16_t w; 417 u_int16_t w2; 418 } b; 419 struct range { 420 int a; 421 int b; 422 int t; 423 } range; 424 struct node_if *interface; 425 struct node_proto *proto; 426 struct node_etherproto *etherproto; 427 struct node_icmp *icmp; 428 struct node_host *host; 429 struct node_os *os; 430 struct node_port *port; 431 struct node_uid *uid; 432 struct node_gid *gid; 433 struct node_state_opt *state_opt; 434 struct peer peer; 435 struct { 436 struct peer src, dst; 437 struct node_os *src_os; 438 } fromto; 439 struct { 440 struct node_mac *src; 441 struct node_mac *dst; 442 } etherfromto; 443 struct node_mac *mac; 444 struct { 445 struct node_mac *mac; 446 } etheraddr; 447 char *bridge_to; 448 struct { 449 struct node_host *host; 450 u_int8_t rt; 451 u_int8_t pool_opts; 452 sa_family_t af; 453 struct pf_poolhashkey *key; 454 } route; 455 struct redirection { 456 struct node_host *host; 457 struct range rport; 458 } *redirection; 459 struct { 460 int action; 461 struct node_state_opt *options; 462 } keep_state; 463 struct { 464 u_int8_t log; 465 u_int8_t logif; 466 u_int8_t quick; 467 } logquick; 468 struct { 469 int neg; 470 char *name; 471 } tagged; 472 struct pf_poolhashkey *hashkey; 473 struct node_queue *queue; 474 struct node_queue_opt queue_options; 475 struct node_queue_bw queue_bwspec; 476 struct node_qassign qassign; 477 struct filter_opts filter_opts; 478 struct antispoof_opts antispoof_opts; 479 struct queue_opts queue_opts; 480 struct scrub_opts scrub_opts; 481 struct table_opts table_opts; 482 struct pool_opts pool_opts; 483 struct node_hfsc_opts hfsc_opts; 484 struct node_fairq_opts fairq_opts; 485 struct codel_opts codel_opts; 486 struct pfctl_watermarks *watermarks; 487 } v; 488 int lineno; 489 } YYSTYPE; 490 491 #define PPORT_RANGE 1 492 #define PPORT_STAR 2 493 int parseport(char *, struct range *r, int); 494 495 #define DYNIF_MULTIADDR(addr) ((addr).type == PF_ADDR_DYNIFTL && \ 496 (!((addr).iflags & PFI_AFLAG_NOALIAS) || \ 497 !isdigit((addr).v.ifname[strlen((addr).v.ifname)-1]))) 498 499 %} 500 501 %token PASS BLOCK MATCH SCRUB RETURN IN OS OUT LOG QUICK ON FROM TO FLAGS 502 %token RETURNRST RETURNICMP RETURNICMP6 PROTO INET INET6 ALL ANY ICMPTYPE 503 %token ICMP6TYPE CODE KEEP MODULATE STATE PORT RDR NAT BINAT ARROW NODF 504 %token MINTTL ERROR ALLOWOPTS FASTROUTE FILENAME ROUTETO DUPTO REPLYTO NO LABEL 505 %token NOROUTE URPFFAILED FRAGMENT USER GROUP MAXMSS MAXIMUM TTL TOS DROP TABLE 506 %token REASSEMBLE ANCHOR NATANCHOR RDRANCHOR BINATANCHOR 507 %token SET OPTIMIZATION TIMEOUT LIMIT LOGINTERFACE BLOCKPOLICY FAILPOLICY 508 %token RANDOMID REQUIREORDER SYNPROXY FINGERPRINTS NOSYNC DEBUG SKIP HOSTID 509 %token ANTISPOOF FOR INCLUDE KEEPCOUNTERS SYNCOOKIES L3 510 %token ETHER 511 %token BITMASK RANDOM SOURCEHASH ROUNDROBIN STATICPORT PROBABILITY MAPEPORTSET 512 %token ALTQ CBQ CODEL PRIQ HFSC FAIRQ BANDWIDTH TBRSIZE LINKSHARE REALTIME 513 %token UPPERLIMIT QUEUE PRIORITY QLIMIT HOGS BUCKETS RTABLE TARGET INTERVAL 514 %token DNPIPE DNQUEUE RIDENTIFIER 515 %token LOAD RULESET_OPTIMIZATION PRIO 516 %token STICKYADDRESS MAXSRCSTATES MAXSRCNODES SOURCETRACK GLOBAL RULE 517 %token MAXSRCCONN MAXSRCCONNRATE OVERLOAD FLUSH SLOPPY 518 %token TAGGED TAG IFBOUND FLOATING STATEPOLICY STATEDEFAULTS ROUTE SETTOS 519 %token DIVERTTO DIVERTREPLY BRIDGE_TO 520 %token <v.string> STRING 521 %token <v.number> NUMBER 522 %token <v.i> PORTBINARY 523 %type <v.interface> interface if_list if_item_not if_item 524 %type <v.number> number icmptype icmp6type uid gid 525 %type <v.number> tos not yesno optnodf 526 %type <v.probability> probability 527 %type <v.i> no dir af fragcache optimizer syncookie_val 528 %type <v.i> sourcetrack flush unaryop statelock 529 %type <v.i> etherprotoval 530 %type <v.b> action nataction natpasslog scrubaction 531 %type <v.b> flags flag blockspec prio 532 %type <v.range> portplain portstar portrange 533 %type <v.hashkey> hashkey 534 %type <v.proto> proto proto_list proto_item 535 %type <v.number> protoval 536 %type <v.icmp> icmpspec 537 %type <v.icmp> icmp_list icmp_item 538 %type <v.icmp> icmp6_list icmp6_item 539 %type <v.number> reticmpspec reticmp6spec 540 %type <v.fromto> fromto l3fromto 541 %type <v.peer> ipportspec from to 542 %type <v.host> ipspec toipspec xhost host dynaddr host_list 543 %type <v.host> redir_host_list redirspec 544 %type <v.host> route_host route_host_list routespec 545 %type <v.os> os xos os_list 546 %type <v.port> portspec port_list port_item 547 %type <v.uid> uids uid_list uid_item 548 %type <v.gid> gids gid_list gid_item 549 %type <v.route> route 550 %type <v.redirection> redirection redirpool 551 %type <v.string> label stringall tag anchorname 552 %type <v.string> string varstring numberstring 553 %type <v.keep_state> keep 554 %type <v.state_opt> state_opt_spec state_opt_list state_opt_item 555 %type <v.logquick> logquick quick log logopts logopt 556 %type <v.interface> antispoof_ifspc antispoof_iflst antispoof_if 557 %type <v.qassign> qname etherqname 558 %type <v.queue> qassign qassign_list qassign_item 559 %type <v.queue_options> scheduler 560 %type <v.number> cbqflags_list cbqflags_item 561 %type <v.number> priqflags_list priqflags_item 562 %type <v.hfsc_opts> hfscopts_list hfscopts_item hfsc_opts 563 %type <v.fairq_opts> fairqopts_list fairqopts_item fairq_opts 564 %type <v.codel_opts> codelopts_list codelopts_item codel_opts 565 %type <v.queue_bwspec> bandwidth 566 %type <v.filter_opts> filter_opts filter_opt filter_opts_l etherfilter_opts etherfilter_opt etherfilter_opts_l 567 %type <v.filter_opts> filter_sets filter_set filter_sets_l 568 %type <v.antispoof_opts> antispoof_opts antispoof_opt antispoof_opts_l 569 %type <v.queue_opts> queue_opts queue_opt queue_opts_l 570 %type <v.scrub_opts> scrub_opts scrub_opt scrub_opts_l 571 %type <v.table_opts> table_opts table_opt table_opts_l 572 %type <v.pool_opts> pool_opts pool_opt pool_opts_l 573 %type <v.tagged> tagged 574 %type <v.rtableid> rtable 575 %type <v.watermarks> syncookie_opts 576 %type <v.etherproto> etherproto etherproto_list etherproto_item 577 %type <v.etherfromto> etherfromto 578 %type <v.etheraddr> etherfrom etherto 579 %type <v.bridge_to> bridge 580 %type <v.mac> xmac mac mac_list macspec 581 %% 582 583 ruleset : /* empty */ 584 | ruleset include '\n' 585 | ruleset '\n' 586 | ruleset option '\n' 587 | ruleset etherrule '\n' 588 | ruleset etheranchorrule '\n' 589 | ruleset scrubrule '\n' 590 | ruleset natrule '\n' 591 | ruleset binatrule '\n' 592 | ruleset pfrule '\n' 593 | ruleset anchorrule '\n' 594 | ruleset loadrule '\n' 595 | ruleset altqif '\n' 596 | ruleset queuespec '\n' 597 | ruleset varset '\n' 598 | ruleset antispoof '\n' 599 | ruleset tabledef '\n' 600 | '{' fakeanchor '}' '\n'; 601 | ruleset error '\n' { file->errors++; } 602 ; 603 604 include : INCLUDE STRING { 605 struct file *nfile; 606 607 if ((nfile = pushfile($2, 0)) == NULL) { 608 yyerror("failed to include file %s", $2); 609 free($2); 610 YYERROR; 611 } 612 free($2); 613 614 file = nfile; 615 lungetc('\n'); 616 } 617 ; 618 619 /* 620 * apply to previouslys specified rule: must be careful to note 621 * what that is: pf or nat or binat or rdr 622 */ 623 fakeanchor : fakeanchor '\n' 624 | fakeanchor anchorrule '\n' 625 | fakeanchor binatrule '\n' 626 | fakeanchor natrule '\n' 627 | fakeanchor pfrule '\n' 628 | fakeanchor error '\n' 629 ; 630 631 optimizer : string { 632 if (!strcmp($1, "none")) 633 $$ = 0; 634 else if (!strcmp($1, "basic")) 635 $$ = PF_OPTIMIZE_BASIC; 636 else if (!strcmp($1, "profile")) 637 $$ = PF_OPTIMIZE_BASIC | PF_OPTIMIZE_PROFILE; 638 else { 639 yyerror("unknown ruleset-optimization %s", $1); 640 YYERROR; 641 } 642 } 643 ; 644 645 optnodf : /* empty */ { $$ = 0; } 646 | NODF { $$ = 1; } 647 ; 648 649 option : SET REASSEMBLE yesno optnodf { 650 if (check_rulestate(PFCTL_STATE_OPTION)) 651 YYERROR; 652 pfctl_set_reassembly(pf, $3, $4); 653 } 654 | SET OPTIMIZATION STRING { 655 if (check_rulestate(PFCTL_STATE_OPTION)) { 656 free($3); 657 YYERROR; 658 } 659 if (pfctl_set_optimization(pf, $3) != 0) { 660 yyerror("unknown optimization %s", $3); 661 free($3); 662 YYERROR; 663 } 664 free($3); 665 } 666 | SET RULESET_OPTIMIZATION optimizer { 667 if (!(pf->opts & PF_OPT_OPTIMIZE)) { 668 pf->opts |= PF_OPT_OPTIMIZE; 669 pf->optimize = $3; 670 } 671 } 672 | SET TIMEOUT timeout_spec 673 | SET TIMEOUT '{' optnl timeout_list '}' 674 | SET LIMIT limit_spec 675 | SET LIMIT '{' optnl limit_list '}' 676 | SET LOGINTERFACE stringall { 677 if (check_rulestate(PFCTL_STATE_OPTION)) { 678 free($3); 679 YYERROR; 680 } 681 if (pfctl_set_logif(pf, $3) != 0) { 682 yyerror("error setting loginterface %s", $3); 683 free($3); 684 YYERROR; 685 } 686 free($3); 687 } 688 | SET HOSTID number { 689 if ($3 == 0 || $3 > UINT_MAX) { 690 yyerror("hostid must be non-zero"); 691 YYERROR; 692 } 693 if (pfctl_set_hostid(pf, $3) != 0) { 694 yyerror("error setting hostid %08x", $3); 695 YYERROR; 696 } 697 } 698 | SET BLOCKPOLICY DROP { 699 if (pf->opts & PF_OPT_VERBOSE) 700 printf("set block-policy drop\n"); 701 if (check_rulestate(PFCTL_STATE_OPTION)) 702 YYERROR; 703 blockpolicy = PFRULE_DROP; 704 } 705 | SET BLOCKPOLICY RETURN { 706 if (pf->opts & PF_OPT_VERBOSE) 707 printf("set block-policy return\n"); 708 if (check_rulestate(PFCTL_STATE_OPTION)) 709 YYERROR; 710 blockpolicy = PFRULE_RETURN; 711 } 712 | SET FAILPOLICY DROP { 713 if (pf->opts & PF_OPT_VERBOSE) 714 printf("set fail-policy drop\n"); 715 if (check_rulestate(PFCTL_STATE_OPTION)) 716 YYERROR; 717 failpolicy = PFRULE_DROP; 718 } 719 | SET FAILPOLICY RETURN { 720 if (pf->opts & PF_OPT_VERBOSE) 721 printf("set fail-policy return\n"); 722 if (check_rulestate(PFCTL_STATE_OPTION)) 723 YYERROR; 724 failpolicy = PFRULE_RETURN; 725 } 726 | SET REQUIREORDER yesno { 727 if (pf->opts & PF_OPT_VERBOSE) 728 printf("set require-order %s\n", 729 $3 == 1 ? "yes" : "no"); 730 require_order = $3; 731 } 732 | SET FINGERPRINTS STRING { 733 if (pf->opts & PF_OPT_VERBOSE) 734 printf("set fingerprints \"%s\"\n", $3); 735 if (check_rulestate(PFCTL_STATE_OPTION)) { 736 free($3); 737 YYERROR; 738 } 739 if (!pf->anchor->name[0]) { 740 if (pfctl_file_fingerprints(pf->dev, 741 pf->opts, $3)) { 742 yyerror("error loading " 743 "fingerprints %s", $3); 744 free($3); 745 YYERROR; 746 } 747 } 748 free($3); 749 } 750 | SET STATEPOLICY statelock { 751 if (pf->opts & PF_OPT_VERBOSE) 752 switch ($3) { 753 case 0: 754 printf("set state-policy floating\n"); 755 break; 756 case PFRULE_IFBOUND: 757 printf("set state-policy if-bound\n"); 758 break; 759 } 760 default_statelock = $3; 761 } 762 | SET DEBUG STRING { 763 if (check_rulestate(PFCTL_STATE_OPTION)) { 764 free($3); 765 YYERROR; 766 } 767 if (pfctl_set_debug(pf, $3) != 0) { 768 yyerror("error setting debuglevel %s", $3); 769 free($3); 770 YYERROR; 771 } 772 free($3); 773 } 774 | SET SKIP interface { 775 if (expand_skip_interface($3) != 0) { 776 yyerror("error setting skip interface(s)"); 777 YYERROR; 778 } 779 } 780 | SET STATEDEFAULTS state_opt_list { 781 if (keep_state_defaults != NULL) { 782 yyerror("cannot redefine state-defaults"); 783 YYERROR; 784 } 785 keep_state_defaults = $3; 786 } 787 | SET KEEPCOUNTERS { 788 pf->keep_counters = true; 789 } 790 | SET SYNCOOKIES syncookie_val syncookie_opts { 791 if (pfctl_cfg_syncookies(pf, $3, $4)) { 792 yyerror("error setting syncookies"); 793 YYERROR; 794 } 795 } 796 ; 797 798 syncookie_val : STRING { 799 if (!strcmp($1, "never")) 800 $$ = PFCTL_SYNCOOKIES_NEVER; 801 else if (!strcmp($1, "adaptive")) 802 $$ = PFCTL_SYNCOOKIES_ADAPTIVE; 803 else if (!strcmp($1, "always")) 804 $$ = PFCTL_SYNCOOKIES_ALWAYS; 805 else { 806 yyerror("illegal value for syncookies"); 807 YYERROR; 808 } 809 } 810 ; 811 syncookie_opts : /* empty */ { $$ = NULL; } 812 | { 813 memset(&syncookie_opts, 0, sizeof(syncookie_opts)); 814 } '(' syncookie_opt_l ')' { $$ = &syncookie_opts; } 815 ; 816 817 syncookie_opt_l : syncookie_opt_l comma syncookie_opt 818 | syncookie_opt 819 ; 820 821 syncookie_opt : STRING STRING { 822 double val; 823 char *cp; 824 825 val = strtod($2, &cp); 826 if (cp == NULL || strcmp(cp, "%")) 827 YYERROR; 828 if (val <= 0 || val > 100) { 829 yyerror("illegal percentage value"); 830 YYERROR; 831 } 832 if (!strcmp($1, "start")) { 833 syncookie_opts.hi = val; 834 } else if (!strcmp($1, "end")) { 835 syncookie_opts.lo = val; 836 } else { 837 yyerror("illegal syncookie option"); 838 YYERROR; 839 } 840 } 841 ; 842 843 stringall : STRING { $$ = $1; } 844 | ALL { 845 if (($$ = strdup("all")) == NULL) { 846 err(1, "stringall: strdup"); 847 } 848 } 849 ; 850 851 string : STRING string { 852 if (asprintf(&$$, "%s %s", $1, $2) == -1) 853 err(1, "string: asprintf"); 854 free($1); 855 free($2); 856 } 857 | STRING 858 ; 859 860 varstring : numberstring varstring { 861 if (asprintf(&$$, "%s %s", $1, $2) == -1) 862 err(1, "string: asprintf"); 863 free($1); 864 free($2); 865 } 866 | numberstring 867 ; 868 869 numberstring : NUMBER { 870 char *s; 871 if (asprintf(&s, "%lld", (long long)$1) == -1) { 872 yyerror("string: asprintf"); 873 YYERROR; 874 } 875 $$ = s; 876 } 877 | STRING 878 ; 879 880 varset : STRING '=' varstring { 881 char *s = $1; 882 if (pf->opts & PF_OPT_VERBOSE) 883 printf("%s = \"%s\"\n", $1, $3); 884 while (*s++) { 885 if (isspace((unsigned char)*s)) { 886 yyerror("macro name cannot contain " 887 "whitespace"); 888 YYERROR; 889 } 890 } 891 if (symset($1, $3, 0) == -1) 892 err(1, "cannot store variable %s", $1); 893 free($1); 894 free($3); 895 } 896 ; 897 898 anchorname : STRING { $$ = $1; } 899 | /* empty */ { $$ = NULL; } 900 ; 901 902 pfa_anchorlist : /* empty */ 903 | pfa_anchorlist '\n' 904 | pfa_anchorlist pfrule '\n' 905 | pfa_anchorlist anchorrule '\n' 906 ; 907 908 pfa_anchor : '{' 909 { 910 char ta[PF_ANCHOR_NAME_SIZE]; 911 struct pfctl_ruleset *rs; 912 913 /* stepping into a brace anchor */ 914 pf->asd++; 915 pf->bn++; 916 917 /* 918 * Anchor contents are parsed before the anchor rule 919 * production completes, so we don't know the real 920 * location yet. Create a holding ruleset in the root; 921 * contents will be moved afterwards. 922 */ 923 snprintf(ta, PF_ANCHOR_NAME_SIZE, "_%d", pf->bn); 924 rs = pf_find_or_create_ruleset(ta); 925 if (rs == NULL) 926 err(1, "pfa_anchor: pf_find_or_create_ruleset"); 927 pf->astack[pf->asd] = rs->anchor; 928 pf->anchor = rs->anchor; 929 } '\n' pfa_anchorlist '}' 930 { 931 pf->alast = pf->anchor; 932 pf->asd--; 933 pf->anchor = pf->astack[pf->asd]; 934 } 935 | /* empty */ 936 ; 937 938 anchorrule : ANCHOR anchorname dir quick interface af proto fromto 939 filter_opts pfa_anchor 940 { 941 struct pfctl_rule r; 942 struct node_proto *proto; 943 944 if (check_rulestate(PFCTL_STATE_FILTER)) { 945 if ($2) 946 free($2); 947 YYERROR; 948 } 949 950 if ($2 && ($2[0] == '_' || strstr($2, "/_") != NULL)) { 951 free($2); 952 yyerror("anchor names beginning with '_' " 953 "are reserved for internal use"); 954 YYERROR; 955 } 956 957 memset(&r, 0, sizeof(r)); 958 if (pf->astack[pf->asd + 1]) { 959 if ($2 && strchr($2, '/') != NULL) { 960 free($2); 961 yyerror("anchor paths containing '/' " 962 "cannot be used for inline anchors."); 963 YYERROR; 964 } 965 966 /* Move inline rules into relative location. */ 967 pfctl_anchor_setup(&r, 968 &pf->astack[pf->asd]->ruleset, 969 $2 ? $2 : pf->alast->name); 970 971 if (r.anchor == NULL) 972 err(1, "anchorrule: unable to " 973 "create ruleset"); 974 975 if (pf->alast != r.anchor) { 976 if (r.anchor->match) { 977 yyerror("inline anchor '%s' " 978 "already exists", 979 r.anchor->name); 980 YYERROR; 981 } 982 mv_rules(&pf->alast->ruleset, 983 &r.anchor->ruleset); 984 } 985 pf_remove_if_empty_ruleset(&pf->alast->ruleset); 986 pf->alast = r.anchor; 987 } else { 988 if (!$2) { 989 yyerror("anchors without explicit " 990 "rules must specify a name"); 991 YYERROR; 992 } 993 } 994 r.direction = $3; 995 r.quick = $4.quick; 996 r.af = $6; 997 r.prob = $9.prob; 998 r.rtableid = $9.rtableid; 999 r.ridentifier = $9.ridentifier; 1000 1001 if ($9.tag) 1002 if (strlcpy(r.tagname, $9.tag, 1003 PF_TAG_NAME_SIZE) >= PF_TAG_NAME_SIZE) { 1004 yyerror("tag too long, max %u chars", 1005 PF_TAG_NAME_SIZE - 1); 1006 YYERROR; 1007 } 1008 if ($9.match_tag) 1009 if (strlcpy(r.match_tagname, $9.match_tag, 1010 PF_TAG_NAME_SIZE) >= PF_TAG_NAME_SIZE) { 1011 yyerror("tag too long, max %u chars", 1012 PF_TAG_NAME_SIZE - 1); 1013 YYERROR; 1014 } 1015 r.match_tag_not = $9.match_tag_not; 1016 if (rule_label(&r, $9.label)) 1017 YYERROR; 1018 for (int i = 0; i < PF_RULE_MAX_LABEL_COUNT; i++) 1019 free($9.label[i]); 1020 r.flags = $9.flags.b1; 1021 r.flagset = $9.flags.b2; 1022 if (($9.flags.b1 & $9.flags.b2) != $9.flags.b1) { 1023 yyerror("flags always false"); 1024 YYERROR; 1025 } 1026 if ($9.flags.b1 || $9.flags.b2 || $8.src_os) { 1027 for (proto = $7; proto != NULL && 1028 proto->proto != IPPROTO_TCP; 1029 proto = proto->next) 1030 ; /* nothing */ 1031 if (proto == NULL && $7 != NULL) { 1032 if ($9.flags.b1 || $9.flags.b2) 1033 yyerror( 1034 "flags only apply to tcp"); 1035 if ($8.src_os) 1036 yyerror( 1037 "OS fingerprinting only " 1038 "applies to tcp"); 1039 YYERROR; 1040 } 1041 } 1042 1043 r.tos = $9.tos; 1044 1045 if ($9.keep.action) { 1046 yyerror("cannot specify state handling " 1047 "on anchors"); 1048 YYERROR; 1049 } 1050 1051 if ($9.match_tag) 1052 if (strlcpy(r.match_tagname, $9.match_tag, 1053 PF_TAG_NAME_SIZE) >= PF_TAG_NAME_SIZE) { 1054 yyerror("tag too long, max %u chars", 1055 PF_TAG_NAME_SIZE - 1); 1056 YYERROR; 1057 } 1058 r.match_tag_not = $9.match_tag_not; 1059 if ($9.marker & FOM_PRIO) { 1060 if ($9.prio == 0) 1061 r.prio = PF_PRIO_ZERO; 1062 else 1063 r.prio = $9.prio; 1064 } 1065 if ($9.marker & FOM_SETPRIO) { 1066 r.set_prio[0] = $9.set_prio[0]; 1067 r.set_prio[1] = $9.set_prio[1]; 1068 r.scrub_flags |= PFSTATE_SETPRIO; 1069 } 1070 1071 decide_address_family($8.src.host, &r.af); 1072 decide_address_family($8.dst.host, &r.af); 1073 1074 expand_rule(&r, $5, NULL, $7, $8.src_os, 1075 $8.src.host, $8.src.port, $8.dst.host, $8.dst.port, 1076 $9.uid, $9.gid, $9.icmpspec, 1077 pf->astack[pf->asd + 1] ? pf->alast->name : $2); 1078 free($2); 1079 pf->astack[pf->asd + 1] = NULL; 1080 } 1081 | NATANCHOR string interface af proto fromto rtable { 1082 struct pfctl_rule r; 1083 1084 if (check_rulestate(PFCTL_STATE_NAT)) { 1085 free($2); 1086 YYERROR; 1087 } 1088 1089 memset(&r, 0, sizeof(r)); 1090 r.action = PF_NAT; 1091 r.af = $4; 1092 r.rtableid = $7; 1093 1094 decide_address_family($6.src.host, &r.af); 1095 decide_address_family($6.dst.host, &r.af); 1096 1097 expand_rule(&r, $3, NULL, $5, $6.src_os, 1098 $6.src.host, $6.src.port, $6.dst.host, $6.dst.port, 1099 0, 0, 0, $2); 1100 free($2); 1101 } 1102 | RDRANCHOR string interface af proto fromto rtable { 1103 struct pfctl_rule r; 1104 1105 if (check_rulestate(PFCTL_STATE_NAT)) { 1106 free($2); 1107 YYERROR; 1108 } 1109 1110 memset(&r, 0, sizeof(r)); 1111 r.action = PF_RDR; 1112 r.af = $4; 1113 r.rtableid = $7; 1114 1115 decide_address_family($6.src.host, &r.af); 1116 decide_address_family($6.dst.host, &r.af); 1117 1118 if ($6.src.port != NULL) { 1119 yyerror("source port parameter not supported" 1120 " in rdr-anchor"); 1121 YYERROR; 1122 } 1123 if ($6.dst.port != NULL) { 1124 if ($6.dst.port->next != NULL) { 1125 yyerror("destination port list " 1126 "expansion not supported in " 1127 "rdr-anchor"); 1128 YYERROR; 1129 } else if ($6.dst.port->op != PF_OP_EQ) { 1130 yyerror("destination port operators" 1131 " not supported in rdr-anchor"); 1132 YYERROR; 1133 } 1134 r.dst.port[0] = $6.dst.port->port[0]; 1135 r.dst.port[1] = $6.dst.port->port[1]; 1136 r.dst.port_op = $6.dst.port->op; 1137 } 1138 1139 expand_rule(&r, $3, NULL, $5, $6.src_os, 1140 $6.src.host, $6.src.port, $6.dst.host, $6.dst.port, 1141 0, 0, 0, $2); 1142 free($2); 1143 } 1144 | BINATANCHOR string interface af proto fromto rtable { 1145 struct pfctl_rule r; 1146 1147 if (check_rulestate(PFCTL_STATE_NAT)) { 1148 free($2); 1149 YYERROR; 1150 } 1151 1152 memset(&r, 0, sizeof(r)); 1153 r.action = PF_BINAT; 1154 r.af = $4; 1155 r.rtableid = $7; 1156 if ($5 != NULL) { 1157 if ($5->next != NULL) { 1158 yyerror("proto list expansion" 1159 " not supported in binat-anchor"); 1160 YYERROR; 1161 } 1162 r.proto = $5->proto; 1163 free($5); 1164 } 1165 1166 if ($6.src.host != NULL || $6.src.port != NULL || 1167 $6.dst.host != NULL || $6.dst.port != NULL) { 1168 yyerror("fromto parameter not supported" 1169 " in binat-anchor"); 1170 YYERROR; 1171 } 1172 1173 decide_address_family($6.src.host, &r.af); 1174 decide_address_family($6.dst.host, &r.af); 1175 1176 pfctl_append_rule(pf, &r, $2); 1177 free($2); 1178 } 1179 ; 1180 1181 loadrule : LOAD ANCHOR string FROM string { 1182 struct loadanchors *loadanchor; 1183 1184 if (strlen(pf->anchor->name) + 1 + 1185 strlen($3) >= MAXPATHLEN) { 1186 yyerror("anchorname %s too long, max %u\n", 1187 $3, MAXPATHLEN - 1); 1188 free($3); 1189 YYERROR; 1190 } 1191 loadanchor = calloc(1, sizeof(struct loadanchors)); 1192 if (loadanchor == NULL) 1193 err(1, "loadrule: calloc"); 1194 if ((loadanchor->anchorname = malloc(MAXPATHLEN)) == 1195 NULL) 1196 err(1, "loadrule: malloc"); 1197 if (pf->anchor->name[0]) 1198 snprintf(loadanchor->anchorname, MAXPATHLEN, 1199 "%s/%s", pf->anchor->name, $3); 1200 else 1201 strlcpy(loadanchor->anchorname, $3, MAXPATHLEN); 1202 if ((loadanchor->filename = strdup($5)) == NULL) 1203 err(1, "loadrule: strdup"); 1204 1205 TAILQ_INSERT_TAIL(&loadanchorshead, loadanchor, 1206 entries); 1207 1208 free($3); 1209 free($5); 1210 }; 1211 1212 scrubaction : no SCRUB { 1213 $$.b2 = $$.w = 0; 1214 if ($1) 1215 $$.b1 = PF_NOSCRUB; 1216 else 1217 $$.b1 = PF_SCRUB; 1218 } 1219 ; 1220 1221 etherrule : ETHER action dir quick interface bridge etherproto etherfromto l3fromto etherfilter_opts 1222 { 1223 struct pfctl_eth_rule r; 1224 1225 bzero(&r, sizeof(r)); 1226 1227 if (check_rulestate(PFCTL_STATE_ETHER)) 1228 YYERROR; 1229 1230 r.action = $2.b1; 1231 r.direction = $3; 1232 r.quick = $4.quick; 1233 if ($10.tag != NULL) 1234 memcpy(&r.tagname, $10.tag, sizeof(r.tagname)); 1235 if ($10.match_tag) 1236 if (strlcpy(r.match_tagname, $10.match_tag, 1237 PF_TAG_NAME_SIZE) >= PF_TAG_NAME_SIZE) { 1238 yyerror("tag too long, max %u chars", 1239 PF_TAG_NAME_SIZE - 1); 1240 YYERROR; 1241 } 1242 r.match_tag_not = $10.match_tag_not; 1243 if ($10.queues.qname != NULL) 1244 memcpy(&r.qname, $10.queues.qname, sizeof(r.qname)); 1245 r.dnpipe = $10.dnpipe; 1246 r.dnflags = $10.free_flags; 1247 if (eth_rule_label(&r, $10.label)) 1248 YYERROR; 1249 for (int i = 0; i < PF_RULE_MAX_LABEL_COUNT; i++) 1250 free($10.label[i]); 1251 r.ridentifier = $10.ridentifier; 1252 1253 expand_eth_rule(&r, $5, $7, $8.src, $8.dst, 1254 $9.src.host, $9.dst.host, $6, ""); 1255 } 1256 ; 1257 1258 etherpfa_anchorlist : /* empty */ 1259 | etherpfa_anchorlist '\n' 1260 | etherpfa_anchorlist etherrule '\n' 1261 | etherpfa_anchorlist etheranchorrule '\n' 1262 ; 1263 1264 etherpfa_anchor : '{' 1265 { 1266 char ta[PF_ANCHOR_NAME_SIZE]; 1267 struct pfctl_eth_ruleset *rs; 1268 1269 /* steping into a brace anchor */ 1270 pf->asd++; 1271 pf->bn++; 1272 1273 /* create a holding ruleset in the root */ 1274 snprintf(ta, PF_ANCHOR_NAME_SIZE, "_%d", pf->bn); 1275 rs = pf_find_or_create_eth_ruleset(ta); 1276 if (rs == NULL) 1277 err(1, "etherpfa_anchor: pf_find_or_create_eth_ruleset"); 1278 pf->eastack[pf->asd] = rs->anchor; 1279 pf->eanchor = rs->anchor; 1280 } '\n' etherpfa_anchorlist '}' 1281 { 1282 pf->ealast = pf->eanchor; 1283 pf->asd--; 1284 pf->eanchor = pf->eastack[pf->asd]; 1285 } 1286 | /* empty */ 1287 ; 1288 1289 etheranchorrule : ETHER ANCHOR anchorname dir quick interface etherproto etherfromto l3fromto etherpfa_anchor 1290 { 1291 struct pfctl_eth_rule r; 1292 1293 if (check_rulestate(PFCTL_STATE_ETHER)) { 1294 free($3); 1295 YYERROR; 1296 } 1297 1298 if ($3 && ($3[0] == '_' || strstr($3, "/_") != NULL)) { 1299 free($3); 1300 yyerror("anchor names beginning with '_' " 1301 "are reserved for internal use"); 1302 YYERROR; 1303 } 1304 1305 memset(&r, 0, sizeof(r)); 1306 if (pf->eastack[pf->asd + 1]) { 1307 if ($3 && strchr($3, '/') != NULL) { 1308 free($3); 1309 yyerror("anchor paths containing '/' " 1310 "cannot be used for inline anchors."); 1311 YYERROR; 1312 } 1313 1314 /* Move inline rules into relative location. */ 1315 pfctl_eth_anchor_setup(pf, &r, 1316 &pf->eastack[pf->asd]->ruleset, 1317 $3 ? $3 : pf->ealast->name); 1318 if (r.anchor == NULL) 1319 err(1, "etheranchorrule: unable to " 1320 "create ruleset"); 1321 1322 if (pf->ealast != r.anchor) { 1323 if (r.anchor->match) { 1324 yyerror("inline anchor '%s' " 1325 "already exists", 1326 r.anchor->name); 1327 YYERROR; 1328 } 1329 mv_eth_rules(&pf->ealast->ruleset, 1330 &r.anchor->ruleset); 1331 } 1332 pf_remove_if_empty_eth_ruleset(&pf->ealast->ruleset); 1333 pf->ealast = r.anchor; 1334 } else { 1335 if (!$3) { 1336 yyerror("anchors without explicit " 1337 "rules must specify a name"); 1338 YYERROR; 1339 } 1340 } 1341 1342 r.direction = $4; 1343 r.quick = $5.quick; 1344 1345 expand_eth_rule(&r, $6, $7, $8.src, $8.dst, 1346 $9.src.host, $9.dst.host, NULL, 1347 pf->eastack[pf->asd + 1] ? pf->ealast->name : $3); 1348 1349 free($3); 1350 pf->eastack[pf->asd + 1] = NULL; 1351 } 1352 ; 1353 1354 etherfilter_opts : { 1355 bzero(&filter_opts, sizeof filter_opts); 1356 } 1357 etherfilter_opts_l 1358 { $$ = filter_opts; } 1359 | /* empty */ { 1360 bzero(&filter_opts, sizeof filter_opts); 1361 $$ = filter_opts; 1362 } 1363 ; 1364 1365 etherfilter_opts_l : etherfilter_opts_l etherfilter_opt 1366 | etherfilter_opt 1367 1368 etherfilter_opt : etherqname { 1369 if (filter_opts.queues.qname) { 1370 yyerror("queue cannot be redefined"); 1371 YYERROR; 1372 } 1373 filter_opts.queues = $1; 1374 } 1375 | RIDENTIFIER number { 1376 filter_opts.ridentifier = $2; 1377 } 1378 | label { 1379 if (filter_opts.labelcount >= PF_RULE_MAX_LABEL_COUNT) { 1380 yyerror("label can only be used %d times", PF_RULE_MAX_LABEL_COUNT); 1381 YYERROR; 1382 } 1383 filter_opts.label[filter_opts.labelcount++] = $1; 1384 } 1385 | TAG string { 1386 filter_opts.tag = $2; 1387 } 1388 | not TAGGED string { 1389 filter_opts.match_tag = $3; 1390 filter_opts.match_tag_not = $1; 1391 } 1392 | DNPIPE number { 1393 filter_opts.dnpipe = $2; 1394 filter_opts.free_flags |= PFRULE_DN_IS_PIPE; 1395 } 1396 | DNQUEUE number { 1397 filter_opts.dnpipe = $2; 1398 filter_opts.free_flags |= PFRULE_DN_IS_QUEUE; 1399 } 1400 ; 1401 1402 bridge : /* empty */ { 1403 $$ = NULL; 1404 } 1405 | BRIDGE_TO STRING { 1406 $$ = strdup($2); 1407 } 1408 ; 1409 1410 scrubrule : scrubaction dir logquick interface af proto fromto scrub_opts 1411 { 1412 struct pfctl_rule r; 1413 1414 if (check_rulestate(PFCTL_STATE_SCRUB)) 1415 YYERROR; 1416 1417 memset(&r, 0, sizeof(r)); 1418 1419 r.action = $1.b1; 1420 r.direction = $2; 1421 1422 r.log = $3.log; 1423 r.logif = $3.logif; 1424 if ($3.quick) { 1425 yyerror("scrub rules do not support 'quick'"); 1426 YYERROR; 1427 } 1428 1429 r.af = $5; 1430 if ($8.nodf) 1431 r.rule_flag |= PFRULE_NODF; 1432 if ($8.randomid) 1433 r.rule_flag |= PFRULE_RANDOMID; 1434 if ($8.reassemble_tcp) { 1435 if (r.direction != PF_INOUT) { 1436 yyerror("reassemble tcp rules can not " 1437 "specify direction"); 1438 YYERROR; 1439 } 1440 r.rule_flag |= PFRULE_REASSEMBLE_TCP; 1441 } 1442 if ($8.minttl) 1443 r.min_ttl = $8.minttl; 1444 if ($8.maxmss) 1445 r.max_mss = $8.maxmss; 1446 if ($8.marker & FOM_SETTOS) { 1447 r.rule_flag |= PFRULE_SET_TOS; 1448 r.set_tos = $8.settos; 1449 } 1450 if ($8.fragcache) 1451 r.rule_flag |= $8.fragcache; 1452 if ($8.match_tag) 1453 if (strlcpy(r.match_tagname, $8.match_tag, 1454 PF_TAG_NAME_SIZE) >= PF_TAG_NAME_SIZE) { 1455 yyerror("tag too long, max %u chars", 1456 PF_TAG_NAME_SIZE - 1); 1457 YYERROR; 1458 } 1459 r.match_tag_not = $8.match_tag_not; 1460 r.rtableid = $8.rtableid; 1461 1462 expand_rule(&r, $4, NULL, $6, $7.src_os, 1463 $7.src.host, $7.src.port, $7.dst.host, $7.dst.port, 1464 NULL, NULL, NULL, ""); 1465 } 1466 ; 1467 1468 scrub_opts : { 1469 bzero(&scrub_opts, sizeof scrub_opts); 1470 scrub_opts.rtableid = -1; 1471 } 1472 scrub_opts_l 1473 { $$ = scrub_opts; } 1474 | /* empty */ { 1475 bzero(&scrub_opts, sizeof scrub_opts); 1476 scrub_opts.rtableid = -1; 1477 $$ = scrub_opts; 1478 } 1479 ; 1480 1481 scrub_opts_l : scrub_opts_l comma scrub_opt 1482 | scrub_opt 1483 ; 1484 1485 scrub_opt : NODF { 1486 if (scrub_opts.nodf) { 1487 yyerror("no-df cannot be respecified"); 1488 YYERROR; 1489 } 1490 scrub_opts.nodf = 1; 1491 } 1492 | MINTTL NUMBER { 1493 if (scrub_opts.marker & FOM_MINTTL) { 1494 yyerror("min-ttl cannot be respecified"); 1495 YYERROR; 1496 } 1497 if ($2 < 0 || $2 > 255) { 1498 yyerror("illegal min-ttl value %d", $2); 1499 YYERROR; 1500 } 1501 scrub_opts.marker |= FOM_MINTTL; 1502 scrub_opts.minttl = $2; 1503 } 1504 | MAXMSS NUMBER { 1505 if (scrub_opts.marker & FOM_MAXMSS) { 1506 yyerror("max-mss cannot be respecified"); 1507 YYERROR; 1508 } 1509 if ($2 < 0 || $2 > 65535) { 1510 yyerror("illegal max-mss value %d", $2); 1511 YYERROR; 1512 } 1513 scrub_opts.marker |= FOM_MAXMSS; 1514 scrub_opts.maxmss = $2; 1515 } 1516 | SETTOS tos { 1517 if (scrub_opts.marker & FOM_SETTOS) { 1518 yyerror("set-tos cannot be respecified"); 1519 YYERROR; 1520 } 1521 scrub_opts.marker |= FOM_SETTOS; 1522 scrub_opts.settos = $2; 1523 } 1524 | fragcache { 1525 if (scrub_opts.marker & FOM_FRAGCACHE) { 1526 yyerror("fragcache cannot be respecified"); 1527 YYERROR; 1528 } 1529 scrub_opts.marker |= FOM_FRAGCACHE; 1530 scrub_opts.fragcache = $1; 1531 } 1532 | REASSEMBLE STRING { 1533 if (strcasecmp($2, "tcp") != 0) { 1534 yyerror("scrub reassemble supports only tcp, " 1535 "not '%s'", $2); 1536 free($2); 1537 YYERROR; 1538 } 1539 free($2); 1540 if (scrub_opts.reassemble_tcp) { 1541 yyerror("reassemble tcp cannot be respecified"); 1542 YYERROR; 1543 } 1544 scrub_opts.reassemble_tcp = 1; 1545 } 1546 | RANDOMID { 1547 if (scrub_opts.randomid) { 1548 yyerror("random-id cannot be respecified"); 1549 YYERROR; 1550 } 1551 scrub_opts.randomid = 1; 1552 } 1553 | RTABLE NUMBER { 1554 if ($2 < 0 || $2 > rt_tableid_max()) { 1555 yyerror("invalid rtable id"); 1556 YYERROR; 1557 } 1558 scrub_opts.rtableid = $2; 1559 } 1560 | not TAGGED string { 1561 scrub_opts.match_tag = $3; 1562 scrub_opts.match_tag_not = $1; 1563 } 1564 ; 1565 1566 fragcache : FRAGMENT REASSEMBLE { $$ = 0; /* default */ } 1567 | FRAGMENT NO REASSEMBLE { $$ = PFRULE_FRAGMENT_NOREASS; } 1568 ; 1569 1570 antispoof : ANTISPOOF logquick antispoof_ifspc af antispoof_opts { 1571 struct pfctl_rule r; 1572 struct node_host *h = NULL, *hh; 1573 struct node_if *i, *j; 1574 1575 if (check_rulestate(PFCTL_STATE_FILTER)) 1576 YYERROR; 1577 1578 for (i = $3; i; i = i->next) { 1579 bzero(&r, sizeof(r)); 1580 1581 r.action = PF_DROP; 1582 r.direction = PF_IN; 1583 r.log = $2.log; 1584 r.logif = $2.logif; 1585 r.quick = $2.quick; 1586 r.af = $4; 1587 r.ridentifier = $5.ridentifier; 1588 if (rule_label(&r, $5.label)) 1589 YYERROR; 1590 r.rtableid = $5.rtableid; 1591 j = calloc(1, sizeof(struct node_if)); 1592 if (j == NULL) 1593 err(1, "antispoof: calloc"); 1594 if (strlcpy(j->ifname, i->ifname, 1595 sizeof(j->ifname)) >= sizeof(j->ifname)) { 1596 free(j); 1597 yyerror("interface name too long"); 1598 YYERROR; 1599 } 1600 j->not = 1; 1601 if (i->dynamic) { 1602 h = calloc(1, sizeof(*h)); 1603 if (h == NULL) 1604 err(1, "address: calloc"); 1605 h->addr.type = PF_ADDR_DYNIFTL; 1606 set_ipmask(h, 128); 1607 if (strlcpy(h->addr.v.ifname, i->ifname, 1608 sizeof(h->addr.v.ifname)) >= 1609 sizeof(h->addr.v.ifname)) { 1610 free(h); 1611 yyerror( 1612 "interface name too long"); 1613 YYERROR; 1614 } 1615 hh = malloc(sizeof(*hh)); 1616 if (hh == NULL) 1617 err(1, "address: malloc"); 1618 bcopy(h, hh, sizeof(*hh)); 1619 h->addr.iflags = PFI_AFLAG_NETWORK; 1620 } else { 1621 h = ifa_lookup(j->ifname, 1622 PFI_AFLAG_NETWORK); 1623 hh = NULL; 1624 } 1625 1626 if (h != NULL) 1627 expand_rule(&r, j, NULL, NULL, NULL, h, 1628 NULL, NULL, NULL, NULL, NULL, 1629 NULL, ""); 1630 1631 if ((i->ifa_flags & IFF_LOOPBACK) == 0) { 1632 bzero(&r, sizeof(r)); 1633 1634 r.action = PF_DROP; 1635 r.direction = PF_IN; 1636 r.log = $2.log; 1637 r.logif = $2.logif; 1638 r.quick = $2.quick; 1639 r.af = $4; 1640 r.ridentifier = $5.ridentifier; 1641 if (rule_label(&r, $5.label)) 1642 YYERROR; 1643 r.rtableid = $5.rtableid; 1644 if (hh != NULL) 1645 h = hh; 1646 else 1647 h = ifa_lookup(i->ifname, 0); 1648 if (h != NULL) 1649 expand_rule(&r, NULL, NULL, 1650 NULL, NULL, h, NULL, NULL, 1651 NULL, NULL, NULL, NULL, ""); 1652 } else 1653 free(hh); 1654 } 1655 for (int i = 0; i < PF_RULE_MAX_LABEL_COUNT; i++) 1656 free($5.label[i]); 1657 } 1658 ; 1659 1660 antispoof_ifspc : FOR antispoof_if { $$ = $2; } 1661 | FOR '{' optnl antispoof_iflst '}' { $$ = $4; } 1662 ; 1663 1664 antispoof_iflst : antispoof_if optnl { $$ = $1; } 1665 | antispoof_iflst comma antispoof_if optnl { 1666 $1->tail->next = $3; 1667 $1->tail = $3; 1668 $$ = $1; 1669 } 1670 ; 1671 1672 antispoof_if : if_item { $$ = $1; } 1673 | '(' if_item ')' { 1674 $2->dynamic = 1; 1675 $$ = $2; 1676 } 1677 ; 1678 1679 antispoof_opts : { 1680 bzero(&antispoof_opts, sizeof antispoof_opts); 1681 antispoof_opts.rtableid = -1; 1682 } 1683 antispoof_opts_l 1684 { $$ = antispoof_opts; } 1685 | /* empty */ { 1686 bzero(&antispoof_opts, sizeof antispoof_opts); 1687 antispoof_opts.rtableid = -1; 1688 $$ = antispoof_opts; 1689 } 1690 ; 1691 1692 antispoof_opts_l : antispoof_opts_l antispoof_opt 1693 | antispoof_opt 1694 ; 1695 1696 antispoof_opt : label { 1697 if (antispoof_opts.labelcount >= PF_RULE_MAX_LABEL_COUNT) { 1698 yyerror("label can only be used %d times", PF_RULE_MAX_LABEL_COUNT); 1699 YYERROR; 1700 } 1701 antispoof_opts.label[antispoof_opts.labelcount++] = $1; 1702 } 1703 | RIDENTIFIER number { 1704 antispoof_opts.ridentifier = $2; 1705 } 1706 | RTABLE NUMBER { 1707 if ($2 < 0 || $2 > rt_tableid_max()) { 1708 yyerror("invalid rtable id"); 1709 YYERROR; 1710 } 1711 antispoof_opts.rtableid = $2; 1712 } 1713 ; 1714 1715 not : '!' { $$ = 1; } 1716 | /* empty */ { $$ = 0; } 1717 ; 1718 1719 tabledef : TABLE '<' STRING '>' table_opts { 1720 struct node_host *h, *nh; 1721 struct node_tinit *ti, *nti; 1722 1723 if (strlen($3) >= PF_TABLE_NAME_SIZE) { 1724 yyerror("table name too long, max %d chars", 1725 PF_TABLE_NAME_SIZE - 1); 1726 free($3); 1727 YYERROR; 1728 } 1729 if (pf->loadopt & PFCTL_FLAG_TABLE) 1730 if (process_tabledef($3, &$5)) { 1731 free($3); 1732 YYERROR; 1733 } 1734 free($3); 1735 for (ti = SIMPLEQ_FIRST(&$5.init_nodes); 1736 ti != SIMPLEQ_END(&$5.init_nodes); ti = nti) { 1737 if (ti->file) 1738 free(ti->file); 1739 for (h = ti->host; h != NULL; h = nh) { 1740 nh = h->next; 1741 free(h); 1742 } 1743 nti = SIMPLEQ_NEXT(ti, entries); 1744 free(ti); 1745 } 1746 } 1747 ; 1748 1749 table_opts : { 1750 bzero(&table_opts, sizeof table_opts); 1751 SIMPLEQ_INIT(&table_opts.init_nodes); 1752 } 1753 table_opts_l 1754 { $$ = table_opts; } 1755 | /* empty */ 1756 { 1757 bzero(&table_opts, sizeof table_opts); 1758 SIMPLEQ_INIT(&table_opts.init_nodes); 1759 $$ = table_opts; 1760 } 1761 ; 1762 1763 table_opts_l : table_opts_l table_opt 1764 | table_opt 1765 ; 1766 1767 table_opt : STRING { 1768 if (!strcmp($1, "const")) 1769 table_opts.flags |= PFR_TFLAG_CONST; 1770 else if (!strcmp($1, "persist")) 1771 table_opts.flags |= PFR_TFLAG_PERSIST; 1772 else if (!strcmp($1, "counters")) 1773 table_opts.flags |= PFR_TFLAG_COUNTERS; 1774 else { 1775 yyerror("invalid table option '%s'", $1); 1776 free($1); 1777 YYERROR; 1778 } 1779 free($1); 1780 } 1781 | '{' optnl '}' { table_opts.init_addr = 1; } 1782 | '{' optnl host_list '}' { 1783 struct node_host *n; 1784 struct node_tinit *ti; 1785 1786 for (n = $3; n != NULL; n = n->next) { 1787 switch (n->addr.type) { 1788 case PF_ADDR_ADDRMASK: 1789 continue; /* ok */ 1790 case PF_ADDR_RANGE: 1791 yyerror("address ranges are not " 1792 "permitted inside tables"); 1793 break; 1794 case PF_ADDR_DYNIFTL: 1795 yyerror("dynamic addresses are not " 1796 "permitted inside tables"); 1797 break; 1798 case PF_ADDR_TABLE: 1799 yyerror("tables cannot contain tables"); 1800 break; 1801 case PF_ADDR_NOROUTE: 1802 yyerror("\"no-route\" is not permitted " 1803 "inside tables"); 1804 break; 1805 case PF_ADDR_URPFFAILED: 1806 yyerror("\"urpf-failed\" is not " 1807 "permitted inside tables"); 1808 break; 1809 default: 1810 yyerror("unknown address type %d", 1811 n->addr.type); 1812 } 1813 YYERROR; 1814 } 1815 if (!(ti = calloc(1, sizeof(*ti)))) 1816 err(1, "table_opt: calloc"); 1817 ti->host = $3; 1818 SIMPLEQ_INSERT_TAIL(&table_opts.init_nodes, ti, 1819 entries); 1820 table_opts.init_addr = 1; 1821 } 1822 | FILENAME STRING { 1823 struct node_tinit *ti; 1824 1825 if (!(ti = calloc(1, sizeof(*ti)))) 1826 err(1, "table_opt: calloc"); 1827 ti->file = $2; 1828 SIMPLEQ_INSERT_TAIL(&table_opts.init_nodes, ti, 1829 entries); 1830 table_opts.init_addr = 1; 1831 } 1832 ; 1833 1834 altqif : ALTQ interface queue_opts QUEUE qassign { 1835 struct pf_altq a; 1836 1837 if (check_rulestate(PFCTL_STATE_QUEUE)) 1838 YYERROR; 1839 1840 memset(&a, 0, sizeof(a)); 1841 if ($3.scheduler.qtype == ALTQT_NONE) { 1842 yyerror("no scheduler specified!"); 1843 YYERROR; 1844 } 1845 a.scheduler = $3.scheduler.qtype; 1846 a.qlimit = $3.qlimit; 1847 a.tbrsize = $3.tbrsize; 1848 if ($5 == NULL && $3.scheduler.qtype != ALTQT_CODEL) { 1849 yyerror("no child queues specified"); 1850 YYERROR; 1851 } 1852 if (expand_altq(&a, $2, $5, $3.queue_bwspec, 1853 &$3.scheduler)) 1854 YYERROR; 1855 } 1856 ; 1857 1858 queuespec : QUEUE STRING interface queue_opts qassign { 1859 struct pf_altq a; 1860 1861 if (check_rulestate(PFCTL_STATE_QUEUE)) { 1862 free($2); 1863 YYERROR; 1864 } 1865 1866 memset(&a, 0, sizeof(a)); 1867 1868 if (strlcpy(a.qname, $2, sizeof(a.qname)) >= 1869 sizeof(a.qname)) { 1870 yyerror("queue name too long (max " 1871 "%d chars)", PF_QNAME_SIZE-1); 1872 free($2); 1873 YYERROR; 1874 } 1875 free($2); 1876 if ($4.tbrsize) { 1877 yyerror("cannot specify tbrsize for queue"); 1878 YYERROR; 1879 } 1880 if ($4.priority > 255) { 1881 yyerror("priority out of range: max 255"); 1882 YYERROR; 1883 } 1884 a.priority = $4.priority; 1885 a.qlimit = $4.qlimit; 1886 a.scheduler = $4.scheduler.qtype; 1887 if (expand_queue(&a, $3, $5, $4.queue_bwspec, 1888 &$4.scheduler)) { 1889 yyerror("errors in queue definition"); 1890 YYERROR; 1891 } 1892 } 1893 ; 1894 1895 queue_opts : { 1896 bzero(&queue_opts, sizeof queue_opts); 1897 queue_opts.priority = DEFAULT_PRIORITY; 1898 queue_opts.qlimit = DEFAULT_QLIMIT; 1899 queue_opts.scheduler.qtype = ALTQT_NONE; 1900 queue_opts.queue_bwspec.bw_percent = 100; 1901 } 1902 queue_opts_l 1903 { $$ = queue_opts; } 1904 | /* empty */ { 1905 bzero(&queue_opts, sizeof queue_opts); 1906 queue_opts.priority = DEFAULT_PRIORITY; 1907 queue_opts.qlimit = DEFAULT_QLIMIT; 1908 queue_opts.scheduler.qtype = ALTQT_NONE; 1909 queue_opts.queue_bwspec.bw_percent = 100; 1910 $$ = queue_opts; 1911 } 1912 ; 1913 1914 queue_opts_l : queue_opts_l queue_opt 1915 | queue_opt 1916 ; 1917 1918 queue_opt : BANDWIDTH bandwidth { 1919 if (queue_opts.marker & QOM_BWSPEC) { 1920 yyerror("bandwidth cannot be respecified"); 1921 YYERROR; 1922 } 1923 queue_opts.marker |= QOM_BWSPEC; 1924 queue_opts.queue_bwspec = $2; 1925 } 1926 | PRIORITY NUMBER { 1927 if (queue_opts.marker & QOM_PRIORITY) { 1928 yyerror("priority cannot be respecified"); 1929 YYERROR; 1930 } 1931 if ($2 < 0 || $2 > 255) { 1932 yyerror("priority out of range: max 255"); 1933 YYERROR; 1934 } 1935 queue_opts.marker |= QOM_PRIORITY; 1936 queue_opts.priority = $2; 1937 } 1938 | QLIMIT NUMBER { 1939 if (queue_opts.marker & QOM_QLIMIT) { 1940 yyerror("qlimit cannot be respecified"); 1941 YYERROR; 1942 } 1943 if ($2 < 0 || $2 > 65535) { 1944 yyerror("qlimit out of range: max 65535"); 1945 YYERROR; 1946 } 1947 queue_opts.marker |= QOM_QLIMIT; 1948 queue_opts.qlimit = $2; 1949 } 1950 | scheduler { 1951 if (queue_opts.marker & QOM_SCHEDULER) { 1952 yyerror("scheduler cannot be respecified"); 1953 YYERROR; 1954 } 1955 queue_opts.marker |= QOM_SCHEDULER; 1956 queue_opts.scheduler = $1; 1957 } 1958 | TBRSIZE NUMBER { 1959 if (queue_opts.marker & QOM_TBRSIZE) { 1960 yyerror("tbrsize cannot be respecified"); 1961 YYERROR; 1962 } 1963 if ($2 < 0 || $2 > UINT_MAX) { 1964 yyerror("tbrsize too big: max %u", UINT_MAX); 1965 YYERROR; 1966 } 1967 queue_opts.marker |= QOM_TBRSIZE; 1968 queue_opts.tbrsize = $2; 1969 } 1970 ; 1971 1972 bandwidth : STRING { 1973 double bps; 1974 char *cp; 1975 1976 $$.bw_percent = 0; 1977 1978 bps = strtod($1, &cp); 1979 if (cp != NULL) { 1980 if (strlen(cp) > 1) { 1981 char *cu = cp + 1; 1982 if (!strcmp(cu, "Bit") || 1983 !strcmp(cu, "B") || 1984 !strcmp(cu, "bit") || 1985 !strcmp(cu, "b")) { 1986 *cu = 0; 1987 } 1988 } 1989 if (!strcmp(cp, "b")) 1990 ; /* nothing */ 1991 else if (!strcmp(cp, "K")) 1992 bps *= 1000; 1993 else if (!strcmp(cp, "M")) 1994 bps *= 1000 * 1000; 1995 else if (!strcmp(cp, "G")) 1996 bps *= 1000 * 1000 * 1000; 1997 else if (!strcmp(cp, "%")) { 1998 if (bps < 0 || bps > 100) { 1999 yyerror("bandwidth spec " 2000 "out of range"); 2001 free($1); 2002 YYERROR; 2003 } 2004 $$.bw_percent = bps; 2005 bps = 0; 2006 } else { 2007 yyerror("unknown unit %s", cp); 2008 free($1); 2009 YYERROR; 2010 } 2011 } 2012 free($1); 2013 $$.bw_absolute = (u_int64_t)bps; 2014 } 2015 | NUMBER { 2016 if ($1 < 0 || $1 >= LLONG_MAX) { 2017 yyerror("bandwidth number too big"); 2018 YYERROR; 2019 } 2020 $$.bw_percent = 0; 2021 $$.bw_absolute = $1; 2022 } 2023 ; 2024 2025 scheduler : CBQ { 2026 $$.qtype = ALTQT_CBQ; 2027 $$.data.cbq_opts.flags = 0; 2028 } 2029 | CBQ '(' cbqflags_list ')' { 2030 $$.qtype = ALTQT_CBQ; 2031 $$.data.cbq_opts.flags = $3; 2032 } 2033 | PRIQ { 2034 $$.qtype = ALTQT_PRIQ; 2035 $$.data.priq_opts.flags = 0; 2036 } 2037 | PRIQ '(' priqflags_list ')' { 2038 $$.qtype = ALTQT_PRIQ; 2039 $$.data.priq_opts.flags = $3; 2040 } 2041 | HFSC { 2042 $$.qtype = ALTQT_HFSC; 2043 bzero(&$$.data.hfsc_opts, 2044 sizeof(struct node_hfsc_opts)); 2045 } 2046 | HFSC '(' hfsc_opts ')' { 2047 $$.qtype = ALTQT_HFSC; 2048 $$.data.hfsc_opts = $3; 2049 } 2050 | FAIRQ { 2051 $$.qtype = ALTQT_FAIRQ; 2052 bzero(&$$.data.fairq_opts, 2053 sizeof(struct node_fairq_opts)); 2054 } 2055 | FAIRQ '(' fairq_opts ')' { 2056 $$.qtype = ALTQT_FAIRQ; 2057 $$.data.fairq_opts = $3; 2058 } 2059 | CODEL { 2060 $$.qtype = ALTQT_CODEL; 2061 bzero(&$$.data.codel_opts, 2062 sizeof(struct codel_opts)); 2063 } 2064 | CODEL '(' codel_opts ')' { 2065 $$.qtype = ALTQT_CODEL; 2066 $$.data.codel_opts = $3; 2067 } 2068 ; 2069 2070 cbqflags_list : cbqflags_item { $$ |= $1; } 2071 | cbqflags_list comma cbqflags_item { $$ |= $3; } 2072 ; 2073 2074 cbqflags_item : STRING { 2075 if (!strcmp($1, "default")) 2076 $$ = CBQCLF_DEFCLASS; 2077 else if (!strcmp($1, "borrow")) 2078 $$ = CBQCLF_BORROW; 2079 else if (!strcmp($1, "red")) 2080 $$ = CBQCLF_RED; 2081 else if (!strcmp($1, "ecn")) 2082 $$ = CBQCLF_RED|CBQCLF_ECN; 2083 else if (!strcmp($1, "rio")) 2084 $$ = CBQCLF_RIO; 2085 else if (!strcmp($1, "codel")) 2086 $$ = CBQCLF_CODEL; 2087 else { 2088 yyerror("unknown cbq flag \"%s\"", $1); 2089 free($1); 2090 YYERROR; 2091 } 2092 free($1); 2093 } 2094 ; 2095 2096 priqflags_list : priqflags_item { $$ |= $1; } 2097 | priqflags_list comma priqflags_item { $$ |= $3; } 2098 ; 2099 2100 priqflags_item : STRING { 2101 if (!strcmp($1, "default")) 2102 $$ = PRCF_DEFAULTCLASS; 2103 else if (!strcmp($1, "red")) 2104 $$ = PRCF_RED; 2105 else if (!strcmp($1, "ecn")) 2106 $$ = PRCF_RED|PRCF_ECN; 2107 else if (!strcmp($1, "rio")) 2108 $$ = PRCF_RIO; 2109 else if (!strcmp($1, "codel")) 2110 $$ = PRCF_CODEL; 2111 else { 2112 yyerror("unknown priq flag \"%s\"", $1); 2113 free($1); 2114 YYERROR; 2115 } 2116 free($1); 2117 } 2118 ; 2119 2120 hfsc_opts : { 2121 bzero(&hfsc_opts, 2122 sizeof(struct node_hfsc_opts)); 2123 } 2124 hfscopts_list { 2125 $$ = hfsc_opts; 2126 } 2127 ; 2128 2129 hfscopts_list : hfscopts_item 2130 | hfscopts_list comma hfscopts_item 2131 ; 2132 2133 hfscopts_item : LINKSHARE bandwidth { 2134 if (hfsc_opts.linkshare.used) { 2135 yyerror("linkshare already specified"); 2136 YYERROR; 2137 } 2138 hfsc_opts.linkshare.m2 = $2; 2139 hfsc_opts.linkshare.used = 1; 2140 } 2141 | LINKSHARE '(' bandwidth comma NUMBER comma bandwidth ')' 2142 { 2143 if ($5 < 0 || $5 > INT_MAX) { 2144 yyerror("timing in curve out of range"); 2145 YYERROR; 2146 } 2147 if (hfsc_opts.linkshare.used) { 2148 yyerror("linkshare already specified"); 2149 YYERROR; 2150 } 2151 hfsc_opts.linkshare.m1 = $3; 2152 hfsc_opts.linkshare.d = $5; 2153 hfsc_opts.linkshare.m2 = $7; 2154 hfsc_opts.linkshare.used = 1; 2155 } 2156 | REALTIME bandwidth { 2157 if (hfsc_opts.realtime.used) { 2158 yyerror("realtime already specified"); 2159 YYERROR; 2160 } 2161 hfsc_opts.realtime.m2 = $2; 2162 hfsc_opts.realtime.used = 1; 2163 } 2164 | REALTIME '(' bandwidth comma NUMBER comma bandwidth ')' 2165 { 2166 if ($5 < 0 || $5 > INT_MAX) { 2167 yyerror("timing in curve out of range"); 2168 YYERROR; 2169 } 2170 if (hfsc_opts.realtime.used) { 2171 yyerror("realtime already specified"); 2172 YYERROR; 2173 } 2174 hfsc_opts.realtime.m1 = $3; 2175 hfsc_opts.realtime.d = $5; 2176 hfsc_opts.realtime.m2 = $7; 2177 hfsc_opts.realtime.used = 1; 2178 } 2179 | UPPERLIMIT bandwidth { 2180 if (hfsc_opts.upperlimit.used) { 2181 yyerror("upperlimit already specified"); 2182 YYERROR; 2183 } 2184 hfsc_opts.upperlimit.m2 = $2; 2185 hfsc_opts.upperlimit.used = 1; 2186 } 2187 | UPPERLIMIT '(' bandwidth comma NUMBER comma bandwidth ')' 2188 { 2189 if ($5 < 0 || $5 > INT_MAX) { 2190 yyerror("timing in curve out of range"); 2191 YYERROR; 2192 } 2193 if (hfsc_opts.upperlimit.used) { 2194 yyerror("upperlimit already specified"); 2195 YYERROR; 2196 } 2197 hfsc_opts.upperlimit.m1 = $3; 2198 hfsc_opts.upperlimit.d = $5; 2199 hfsc_opts.upperlimit.m2 = $7; 2200 hfsc_opts.upperlimit.used = 1; 2201 } 2202 | STRING { 2203 if (!strcmp($1, "default")) 2204 hfsc_opts.flags |= HFCF_DEFAULTCLASS; 2205 else if (!strcmp($1, "red")) 2206 hfsc_opts.flags |= HFCF_RED; 2207 else if (!strcmp($1, "ecn")) 2208 hfsc_opts.flags |= HFCF_RED|HFCF_ECN; 2209 else if (!strcmp($1, "rio")) 2210 hfsc_opts.flags |= HFCF_RIO; 2211 else if (!strcmp($1, "codel")) 2212 hfsc_opts.flags |= HFCF_CODEL; 2213 else { 2214 yyerror("unknown hfsc flag \"%s\"", $1); 2215 free($1); 2216 YYERROR; 2217 } 2218 free($1); 2219 } 2220 ; 2221 2222 fairq_opts : { 2223 bzero(&fairq_opts, 2224 sizeof(struct node_fairq_opts)); 2225 } 2226 fairqopts_list { 2227 $$ = fairq_opts; 2228 } 2229 ; 2230 2231 fairqopts_list : fairqopts_item 2232 | fairqopts_list comma fairqopts_item 2233 ; 2234 2235 fairqopts_item : LINKSHARE bandwidth { 2236 if (fairq_opts.linkshare.used) { 2237 yyerror("linkshare already specified"); 2238 YYERROR; 2239 } 2240 fairq_opts.linkshare.m2 = $2; 2241 fairq_opts.linkshare.used = 1; 2242 } 2243 | LINKSHARE '(' bandwidth number bandwidth ')' { 2244 if (fairq_opts.linkshare.used) { 2245 yyerror("linkshare already specified"); 2246 YYERROR; 2247 } 2248 fairq_opts.linkshare.m1 = $3; 2249 fairq_opts.linkshare.d = $4; 2250 fairq_opts.linkshare.m2 = $5; 2251 fairq_opts.linkshare.used = 1; 2252 } 2253 | HOGS bandwidth { 2254 fairq_opts.hogs_bw = $2; 2255 } 2256 | BUCKETS number { 2257 fairq_opts.nbuckets = $2; 2258 } 2259 | STRING { 2260 if (!strcmp($1, "default")) 2261 fairq_opts.flags |= FARF_DEFAULTCLASS; 2262 else if (!strcmp($1, "red")) 2263 fairq_opts.flags |= FARF_RED; 2264 else if (!strcmp($1, "ecn")) 2265 fairq_opts.flags |= FARF_RED|FARF_ECN; 2266 else if (!strcmp($1, "rio")) 2267 fairq_opts.flags |= FARF_RIO; 2268 else if (!strcmp($1, "codel")) 2269 fairq_opts.flags |= FARF_CODEL; 2270 else { 2271 yyerror("unknown fairq flag \"%s\"", $1); 2272 free($1); 2273 YYERROR; 2274 } 2275 free($1); 2276 } 2277 ; 2278 2279 codel_opts : { 2280 bzero(&codel_opts, 2281 sizeof(struct codel_opts)); 2282 } 2283 codelopts_list { 2284 $$ = codel_opts; 2285 } 2286 ; 2287 2288 codelopts_list : codelopts_item 2289 | codelopts_list comma codelopts_item 2290 ; 2291 2292 codelopts_item : INTERVAL number { 2293 if (codel_opts.interval) { 2294 yyerror("interval already specified"); 2295 YYERROR; 2296 } 2297 codel_opts.interval = $2; 2298 } 2299 | TARGET number { 2300 if (codel_opts.target) { 2301 yyerror("target already specified"); 2302 YYERROR; 2303 } 2304 codel_opts.target = $2; 2305 } 2306 | STRING { 2307 if (!strcmp($1, "ecn")) 2308 codel_opts.ecn = 1; 2309 else { 2310 yyerror("unknown codel option \"%s\"", $1); 2311 free($1); 2312 YYERROR; 2313 } 2314 free($1); 2315 } 2316 ; 2317 2318 qassign : /* empty */ { $$ = NULL; } 2319 | qassign_item { $$ = $1; } 2320 | '{' optnl qassign_list '}' { $$ = $3; } 2321 ; 2322 2323 qassign_list : qassign_item optnl { $$ = $1; } 2324 | qassign_list comma qassign_item optnl { 2325 $1->tail->next = $3; 2326 $1->tail = $3; 2327 $$ = $1; 2328 } 2329 ; 2330 2331 qassign_item : STRING { 2332 $$ = calloc(1, sizeof(struct node_queue)); 2333 if ($$ == NULL) 2334 err(1, "qassign_item: calloc"); 2335 if (strlcpy($$->queue, $1, sizeof($$->queue)) >= 2336 sizeof($$->queue)) { 2337 yyerror("queue name '%s' too long (max " 2338 "%d chars)", $1, sizeof($$->queue)-1); 2339 free($1); 2340 free($$); 2341 YYERROR; 2342 } 2343 free($1); 2344 $$->next = NULL; 2345 $$->tail = $$; 2346 } 2347 ; 2348 2349 pfrule : action dir logquick interface route af proto fromto 2350 filter_opts 2351 { 2352 struct pfctl_rule r; 2353 struct node_state_opt *o; 2354 struct node_proto *proto; 2355 int srctrack = 0; 2356 int statelock = 0; 2357 int adaptive = 0; 2358 int defaults = 0; 2359 2360 if (check_rulestate(PFCTL_STATE_FILTER)) 2361 YYERROR; 2362 2363 memset(&r, 0, sizeof(r)); 2364 2365 r.action = $1.b1; 2366 switch ($1.b2) { 2367 case PFRULE_RETURNRST: 2368 r.rule_flag |= PFRULE_RETURNRST; 2369 r.return_ttl = $1.w; 2370 break; 2371 case PFRULE_RETURNICMP: 2372 r.rule_flag |= PFRULE_RETURNICMP; 2373 r.return_icmp = $1.w; 2374 r.return_icmp6 = $1.w2; 2375 break; 2376 case PFRULE_RETURN: 2377 r.rule_flag |= PFRULE_RETURN; 2378 r.return_icmp = $1.w; 2379 r.return_icmp6 = $1.w2; 2380 break; 2381 } 2382 r.direction = $2; 2383 r.log = $3.log; 2384 r.logif = $3.logif; 2385 r.quick = $3.quick; 2386 r.prob = $9.prob; 2387 r.rtableid = $9.rtableid; 2388 2389 if ($9.nodf) 2390 r.scrub_flags |= PFSTATE_NODF; 2391 if ($9.randomid) 2392 r.scrub_flags |= PFSTATE_RANDOMID; 2393 if ($9.minttl) 2394 r.min_ttl = $9.minttl; 2395 if ($9.max_mss) 2396 r.max_mss = $9.max_mss; 2397 if ($9.marker & FOM_SETTOS) { 2398 r.scrub_flags |= PFSTATE_SETTOS; 2399 r.set_tos = $9.settos; 2400 } 2401 if ($9.marker & FOM_SCRUB_TCP) 2402 r.scrub_flags |= PFSTATE_SCRUB_TCP; 2403 2404 if ($9.marker & FOM_PRIO) { 2405 if ($9.prio == 0) 2406 r.prio = PF_PRIO_ZERO; 2407 else 2408 r.prio = $9.prio; 2409 } 2410 if ($9.marker & FOM_SETPRIO) { 2411 r.set_prio[0] = $9.set_prio[0]; 2412 r.set_prio[1] = $9.set_prio[1]; 2413 r.scrub_flags |= PFSTATE_SETPRIO; 2414 } 2415 2416 r.af = $6; 2417 if ($9.tag) 2418 if (strlcpy(r.tagname, $9.tag, 2419 PF_TAG_NAME_SIZE) >= PF_TAG_NAME_SIZE) { 2420 yyerror("tag too long, max %u chars", 2421 PF_TAG_NAME_SIZE - 1); 2422 YYERROR; 2423 } 2424 if ($9.match_tag) 2425 if (strlcpy(r.match_tagname, $9.match_tag, 2426 PF_TAG_NAME_SIZE) >= PF_TAG_NAME_SIZE) { 2427 yyerror("tag too long, max %u chars", 2428 PF_TAG_NAME_SIZE - 1); 2429 YYERROR; 2430 } 2431 r.match_tag_not = $9.match_tag_not; 2432 if (rule_label(&r, $9.label)) 2433 YYERROR; 2434 for (int i = 0; i < PF_RULE_MAX_LABEL_COUNT; i++) 2435 free($9.label[i]); 2436 r.ridentifier = $9.ridentifier; 2437 r.flags = $9.flags.b1; 2438 r.flagset = $9.flags.b2; 2439 if (($9.flags.b1 & $9.flags.b2) != $9.flags.b1) { 2440 yyerror("flags always false"); 2441 YYERROR; 2442 } 2443 if ($9.flags.b1 || $9.flags.b2 || $8.src_os) { 2444 for (proto = $7; proto != NULL && 2445 proto->proto != IPPROTO_TCP; 2446 proto = proto->next) 2447 ; /* nothing */ 2448 if (proto == NULL && $7 != NULL) { 2449 if ($9.flags.b1 || $9.flags.b2) 2450 yyerror( 2451 "flags only apply to tcp"); 2452 if ($8.src_os) 2453 yyerror( 2454 "OS fingerprinting only " 2455 "apply to tcp"); 2456 YYERROR; 2457 } 2458 #if 0 2459 if (($9.flags.b1 & parse_flags("S")) == 0 && 2460 $8.src_os) { 2461 yyerror("OS fingerprinting requires " 2462 "the SYN TCP flag (flags S/SA)"); 2463 YYERROR; 2464 } 2465 #endif 2466 } 2467 2468 r.tos = $9.tos; 2469 r.keep_state = $9.keep.action; 2470 o = $9.keep.options; 2471 2472 /* 'keep state' by default on pass rules. */ 2473 if (!r.keep_state && !r.action && 2474 !($9.marker & FOM_KEEP)) { 2475 r.keep_state = PF_STATE_NORMAL; 2476 o = keep_state_defaults; 2477 defaults = 1; 2478 } 2479 2480 while (o) { 2481 struct node_state_opt *p = o; 2482 2483 switch (o->type) { 2484 case PF_STATE_OPT_MAX: 2485 if (r.max_states) { 2486 yyerror("state option 'max' " 2487 "multiple definitions"); 2488 YYERROR; 2489 } 2490 r.max_states = o->data.max_states; 2491 break; 2492 case PF_STATE_OPT_NOSYNC: 2493 if (r.rule_flag & PFRULE_NOSYNC) { 2494 yyerror("state option 'sync' " 2495 "multiple definitions"); 2496 YYERROR; 2497 } 2498 r.rule_flag |= PFRULE_NOSYNC; 2499 break; 2500 case PF_STATE_OPT_SRCTRACK: 2501 if (srctrack) { 2502 yyerror("state option " 2503 "'source-track' " 2504 "multiple definitions"); 2505 YYERROR; 2506 } 2507 srctrack = o->data.src_track; 2508 r.rule_flag |= PFRULE_SRCTRACK; 2509 break; 2510 case PF_STATE_OPT_MAX_SRC_STATES: 2511 if (r.max_src_states) { 2512 yyerror("state option " 2513 "'max-src-states' " 2514 "multiple definitions"); 2515 YYERROR; 2516 } 2517 if (o->data.max_src_states == 0) { 2518 yyerror("'max-src-states' must " 2519 "be > 0"); 2520 YYERROR; 2521 } 2522 r.max_src_states = 2523 o->data.max_src_states; 2524 r.rule_flag |= PFRULE_SRCTRACK; 2525 break; 2526 case PF_STATE_OPT_OVERLOAD: 2527 if (r.overload_tblname[0]) { 2528 yyerror("multiple 'overload' " 2529 "table definitions"); 2530 YYERROR; 2531 } 2532 if (strlcpy(r.overload_tblname, 2533 o->data.overload.tblname, 2534 PF_TABLE_NAME_SIZE) >= 2535 PF_TABLE_NAME_SIZE) { 2536 yyerror("state option: " 2537 "strlcpy"); 2538 YYERROR; 2539 } 2540 r.flush = o->data.overload.flush; 2541 break; 2542 case PF_STATE_OPT_MAX_SRC_CONN: 2543 if (r.max_src_conn) { 2544 yyerror("state option " 2545 "'max-src-conn' " 2546 "multiple definitions"); 2547 YYERROR; 2548 } 2549 if (o->data.max_src_conn == 0) { 2550 yyerror("'max-src-conn' " 2551 "must be > 0"); 2552 YYERROR; 2553 } 2554 r.max_src_conn = 2555 o->data.max_src_conn; 2556 r.rule_flag |= PFRULE_SRCTRACK | 2557 PFRULE_RULESRCTRACK; 2558 break; 2559 case PF_STATE_OPT_MAX_SRC_CONN_RATE: 2560 if (r.max_src_conn_rate.limit) { 2561 yyerror("state option " 2562 "'max-src-conn-rate' " 2563 "multiple definitions"); 2564 YYERROR; 2565 } 2566 if (!o->data.max_src_conn_rate.limit || 2567 !o->data.max_src_conn_rate.seconds) { 2568 yyerror("'max-src-conn-rate' " 2569 "values must be > 0"); 2570 YYERROR; 2571 } 2572 if (o->data.max_src_conn_rate.limit > 2573 PF_THRESHOLD_MAX) { 2574 yyerror("'max-src-conn-rate' " 2575 "maximum rate must be < %u", 2576 PF_THRESHOLD_MAX); 2577 YYERROR; 2578 } 2579 r.max_src_conn_rate.limit = 2580 o->data.max_src_conn_rate.limit; 2581 r.max_src_conn_rate.seconds = 2582 o->data.max_src_conn_rate.seconds; 2583 r.rule_flag |= PFRULE_SRCTRACK | 2584 PFRULE_RULESRCTRACK; 2585 break; 2586 case PF_STATE_OPT_MAX_SRC_NODES: 2587 if (r.max_src_nodes) { 2588 yyerror("state option " 2589 "'max-src-nodes' " 2590 "multiple definitions"); 2591 YYERROR; 2592 } 2593 if (o->data.max_src_nodes == 0) { 2594 yyerror("'max-src-nodes' must " 2595 "be > 0"); 2596 YYERROR; 2597 } 2598 r.max_src_nodes = 2599 o->data.max_src_nodes; 2600 r.rule_flag |= PFRULE_SRCTRACK | 2601 PFRULE_RULESRCTRACK; 2602 break; 2603 case PF_STATE_OPT_STATELOCK: 2604 if (statelock) { 2605 yyerror("state locking option: " 2606 "multiple definitions"); 2607 YYERROR; 2608 } 2609 statelock = 1; 2610 r.rule_flag |= o->data.statelock; 2611 break; 2612 case PF_STATE_OPT_SLOPPY: 2613 if (r.rule_flag & PFRULE_STATESLOPPY) { 2614 yyerror("state sloppy option: " 2615 "multiple definitions"); 2616 YYERROR; 2617 } 2618 r.rule_flag |= PFRULE_STATESLOPPY; 2619 break; 2620 case PF_STATE_OPT_TIMEOUT: 2621 if (o->data.timeout.number == 2622 PFTM_ADAPTIVE_START || 2623 o->data.timeout.number == 2624 PFTM_ADAPTIVE_END) 2625 adaptive = 1; 2626 if (r.timeout[o->data.timeout.number]) { 2627 yyerror("state timeout %s " 2628 "multiple definitions", 2629 pf_timeouts[o->data. 2630 timeout.number].name); 2631 YYERROR; 2632 } 2633 r.timeout[o->data.timeout.number] = 2634 o->data.timeout.seconds; 2635 } 2636 o = o->next; 2637 if (!defaults) 2638 free(p); 2639 } 2640 2641 /* 'flags S/SA' by default on stateful rules */ 2642 if (!r.action && !r.flags && !r.flagset && 2643 !$9.fragment && !($9.marker & FOM_FLAGS) && 2644 r.keep_state) { 2645 r.flags = parse_flags("S"); 2646 r.flagset = parse_flags("SA"); 2647 } 2648 if (!adaptive && r.max_states) { 2649 r.timeout[PFTM_ADAPTIVE_START] = 2650 (r.max_states / 10) * 6; 2651 r.timeout[PFTM_ADAPTIVE_END] = 2652 (r.max_states / 10) * 12; 2653 } 2654 if (r.rule_flag & PFRULE_SRCTRACK) { 2655 if (srctrack == PF_SRCTRACK_GLOBAL && 2656 r.max_src_nodes) { 2657 yyerror("'max-src-nodes' is " 2658 "incompatible with " 2659 "'source-track global'"); 2660 YYERROR; 2661 } 2662 if (srctrack == PF_SRCTRACK_GLOBAL && 2663 r.max_src_conn) { 2664 yyerror("'max-src-conn' is " 2665 "incompatible with " 2666 "'source-track global'"); 2667 YYERROR; 2668 } 2669 if (srctrack == PF_SRCTRACK_GLOBAL && 2670 r.max_src_conn_rate.seconds) { 2671 yyerror("'max-src-conn-rate' is " 2672 "incompatible with " 2673 "'source-track global'"); 2674 YYERROR; 2675 } 2676 if (r.timeout[PFTM_SRC_NODE] < 2677 r.max_src_conn_rate.seconds) 2678 r.timeout[PFTM_SRC_NODE] = 2679 r.max_src_conn_rate.seconds; 2680 r.rule_flag |= PFRULE_SRCTRACK; 2681 if (srctrack == PF_SRCTRACK_RULE) 2682 r.rule_flag |= PFRULE_RULESRCTRACK; 2683 } 2684 if (r.keep_state && !statelock) 2685 r.rule_flag |= default_statelock; 2686 2687 if ($9.fragment) 2688 r.rule_flag |= PFRULE_FRAGMENT; 2689 r.allow_opts = $9.allowopts; 2690 2691 decide_address_family($8.src.host, &r.af); 2692 decide_address_family($8.dst.host, &r.af); 2693 2694 if ($5.rt) { 2695 if (!r.direction) { 2696 yyerror("direction must be explicit " 2697 "with rules that specify routing"); 2698 YYERROR; 2699 } 2700 r.rt = $5.rt; 2701 r.rpool.opts = $5.pool_opts; 2702 if ($5.key != NULL) 2703 memcpy(&r.rpool.key, $5.key, 2704 sizeof(struct pf_poolhashkey)); 2705 } 2706 if (r.rt) { 2707 decide_address_family($5.host, &r.af); 2708 remove_invalid_hosts(&$5.host, &r.af); 2709 if ($5.host == NULL) { 2710 yyerror("no routing address with " 2711 "matching address family found."); 2712 YYERROR; 2713 } 2714 if ((r.rpool.opts & PF_POOL_TYPEMASK) == 2715 PF_POOL_NONE && ($5.host->next != NULL || 2716 $5.host->addr.type == PF_ADDR_TABLE || 2717 DYNIF_MULTIADDR($5.host->addr))) 2718 r.rpool.opts |= PF_POOL_ROUNDROBIN; 2719 if ((r.rpool.opts & PF_POOL_TYPEMASK) != 2720 PF_POOL_ROUNDROBIN && 2721 disallow_table($5.host, "tables are only " 2722 "supported in round-robin routing pools")) 2723 YYERROR; 2724 if ((r.rpool.opts & PF_POOL_TYPEMASK) != 2725 PF_POOL_ROUNDROBIN && 2726 disallow_alias($5.host, "interface (%s) " 2727 "is only supported in round-robin " 2728 "routing pools")) 2729 YYERROR; 2730 if ($5.host->next != NULL) { 2731 if ((r.rpool.opts & PF_POOL_TYPEMASK) != 2732 PF_POOL_ROUNDROBIN) { 2733 yyerror("r.rpool.opts must " 2734 "be PF_POOL_ROUNDROBIN"); 2735 YYERROR; 2736 } 2737 } 2738 } 2739 if ($9.queues.qname != NULL) { 2740 if (strlcpy(r.qname, $9.queues.qname, 2741 sizeof(r.qname)) >= sizeof(r.qname)) { 2742 yyerror("rule qname too long (max " 2743 "%d chars)", sizeof(r.qname)-1); 2744 YYERROR; 2745 } 2746 free($9.queues.qname); 2747 } 2748 if ($9.queues.pqname != NULL) { 2749 if (strlcpy(r.pqname, $9.queues.pqname, 2750 sizeof(r.pqname)) >= sizeof(r.pqname)) { 2751 yyerror("rule pqname too long (max " 2752 "%d chars)", sizeof(r.pqname)-1); 2753 YYERROR; 2754 } 2755 free($9.queues.pqname); 2756 } 2757 #ifdef __FreeBSD__ 2758 r.divert.port = $9.divert.port; 2759 #else 2760 if ((r.divert.port = $9.divert.port)) { 2761 if (r.direction == PF_OUT) { 2762 if ($9.divert.addr) { 2763 yyerror("address specified " 2764 "for outgoing divert"); 2765 YYERROR; 2766 } 2767 bzero(&r.divert.addr, 2768 sizeof(r.divert.addr)); 2769 } else { 2770 if (!$9.divert.addr) { 2771 yyerror("no address specified " 2772 "for incoming divert"); 2773 YYERROR; 2774 } 2775 if ($9.divert.addr->af != r.af) { 2776 yyerror("address family " 2777 "mismatch for divert"); 2778 YYERROR; 2779 } 2780 r.divert.addr = 2781 $9.divert.addr->addr.v.a.addr; 2782 } 2783 } 2784 #endif 2785 2786 if ($9.dnpipe || $9.dnrpipe) { 2787 r.dnpipe = $9.dnpipe; 2788 r.dnrpipe = $9.dnrpipe; 2789 if ($9.free_flags & PFRULE_DN_IS_PIPE) 2790 r.free_flags |= PFRULE_DN_IS_PIPE; 2791 else 2792 r.free_flags |= PFRULE_DN_IS_QUEUE; 2793 } 2794 2795 expand_rule(&r, $4, $5.host, $7, $8.src_os, 2796 $8.src.host, $8.src.port, $8.dst.host, $8.dst.port, 2797 $9.uid, $9.gid, $9.icmpspec, ""); 2798 } 2799 ; 2800 2801 filter_opts : { 2802 bzero(&filter_opts, sizeof filter_opts); 2803 filter_opts.rtableid = -1; 2804 } 2805 filter_opts_l 2806 { $$ = filter_opts; } 2807 | /* empty */ { 2808 bzero(&filter_opts, sizeof filter_opts); 2809 filter_opts.rtableid = -1; 2810 $$ = filter_opts; 2811 } 2812 ; 2813 2814 filter_opts_l : filter_opts_l filter_opt 2815 | filter_opt 2816 ; 2817 2818 filter_opt : USER uids { 2819 if (filter_opts.uid) 2820 $2->tail->next = filter_opts.uid; 2821 filter_opts.uid = $2; 2822 } 2823 | GROUP gids { 2824 if (filter_opts.gid) 2825 $2->tail->next = filter_opts.gid; 2826 filter_opts.gid = $2; 2827 } 2828 | flags { 2829 if (filter_opts.marker & FOM_FLAGS) { 2830 yyerror("flags cannot be redefined"); 2831 YYERROR; 2832 } 2833 filter_opts.marker |= FOM_FLAGS; 2834 filter_opts.flags.b1 |= $1.b1; 2835 filter_opts.flags.b2 |= $1.b2; 2836 filter_opts.flags.w |= $1.w; 2837 filter_opts.flags.w2 |= $1.w2; 2838 } 2839 | icmpspec { 2840 if (filter_opts.marker & FOM_ICMP) { 2841 yyerror("icmp-type cannot be redefined"); 2842 YYERROR; 2843 } 2844 filter_opts.marker |= FOM_ICMP; 2845 filter_opts.icmpspec = $1; 2846 } 2847 | PRIO NUMBER { 2848 if (filter_opts.marker & FOM_PRIO) { 2849 yyerror("prio cannot be redefined"); 2850 YYERROR; 2851 } 2852 if ($2 < 0 || $2 > PF_PRIO_MAX) { 2853 yyerror("prio must be 0 - %u", PF_PRIO_MAX); 2854 YYERROR; 2855 } 2856 filter_opts.marker |= FOM_PRIO; 2857 filter_opts.prio = $2; 2858 } 2859 | TOS tos { 2860 if (filter_opts.marker & FOM_TOS) { 2861 yyerror("tos cannot be redefined"); 2862 YYERROR; 2863 } 2864 filter_opts.marker |= FOM_TOS; 2865 filter_opts.tos = $2; 2866 } 2867 | keep { 2868 if (filter_opts.marker & FOM_KEEP) { 2869 yyerror("modulate or keep cannot be redefined"); 2870 YYERROR; 2871 } 2872 filter_opts.marker |= FOM_KEEP; 2873 filter_opts.keep.action = $1.action; 2874 filter_opts.keep.options = $1.options; 2875 } 2876 | RIDENTIFIER number { 2877 filter_opts.ridentifier = $2; 2878 } 2879 | FRAGMENT { 2880 filter_opts.fragment = 1; 2881 } 2882 | ALLOWOPTS { 2883 filter_opts.allowopts = 1; 2884 } 2885 | label { 2886 if (filter_opts.labelcount >= PF_RULE_MAX_LABEL_COUNT) { 2887 yyerror("label can only be used %d times", PF_RULE_MAX_LABEL_COUNT); 2888 YYERROR; 2889 } 2890 filter_opts.label[filter_opts.labelcount++] = $1; 2891 } 2892 | qname { 2893 if (filter_opts.queues.qname) { 2894 yyerror("queue cannot be redefined"); 2895 YYERROR; 2896 } 2897 filter_opts.queues = $1; 2898 } 2899 | DNPIPE number { 2900 filter_opts.dnpipe = $2; 2901 filter_opts.free_flags |= PFRULE_DN_IS_PIPE; 2902 } 2903 | DNPIPE '(' number ')' { 2904 filter_opts.dnpipe = $3; 2905 filter_opts.free_flags |= PFRULE_DN_IS_PIPE; 2906 } 2907 | DNPIPE '(' number comma number ')' { 2908 filter_opts.dnrpipe = $5; 2909 filter_opts.dnpipe = $3; 2910 filter_opts.free_flags |= PFRULE_DN_IS_PIPE; 2911 } 2912 | DNQUEUE number { 2913 filter_opts.dnpipe = $2; 2914 filter_opts.free_flags |= PFRULE_DN_IS_QUEUE; 2915 } 2916 | DNQUEUE '(' number comma number ')' { 2917 filter_opts.dnrpipe = $5; 2918 filter_opts.dnpipe = $3; 2919 filter_opts.free_flags |= PFRULE_DN_IS_QUEUE; 2920 } 2921 | DNQUEUE '(' number ')' { 2922 filter_opts.dnpipe = $3; 2923 filter_opts.free_flags |= PFRULE_DN_IS_QUEUE; 2924 } 2925 | TAG string { 2926 filter_opts.tag = $2; 2927 } 2928 | not TAGGED string { 2929 filter_opts.match_tag = $3; 2930 filter_opts.match_tag_not = $1; 2931 } 2932 | PROBABILITY probability { 2933 double p; 2934 2935 p = floor($2 * UINT_MAX + 0.5); 2936 if (p < 0.0 || p > UINT_MAX) { 2937 yyerror("invalid probability: %lf", p); 2938 YYERROR; 2939 } 2940 filter_opts.prob = (u_int32_t)p; 2941 if (filter_opts.prob == 0) 2942 filter_opts.prob = 1; 2943 } 2944 | RTABLE NUMBER { 2945 if ($2 < 0 || $2 > rt_tableid_max()) { 2946 yyerror("invalid rtable id"); 2947 YYERROR; 2948 } 2949 filter_opts.rtableid = $2; 2950 } 2951 | DIVERTTO portplain { 2952 #ifdef __FreeBSD__ 2953 filter_opts.divert.port = $2.a; 2954 if (!filter_opts.divert.port) { 2955 yyerror("invalid divert port: %u", ntohs($2.a)); 2956 YYERROR; 2957 } 2958 #endif 2959 } 2960 | DIVERTTO STRING PORT portplain { 2961 #ifndef __FreeBSD__ 2962 if ((filter_opts.divert.addr = host($2)) == NULL) { 2963 yyerror("could not parse divert address: %s", 2964 $2); 2965 free($2); 2966 YYERROR; 2967 } 2968 #else 2969 if ($2) 2970 #endif 2971 free($2); 2972 filter_opts.divert.port = $4.a; 2973 if (!filter_opts.divert.port) { 2974 yyerror("invalid divert port: %u", ntohs($4.a)); 2975 YYERROR; 2976 } 2977 } 2978 | DIVERTREPLY { 2979 #ifdef __FreeBSD__ 2980 yyerror("divert-reply has no meaning in FreeBSD pf(4)"); 2981 YYERROR; 2982 #else 2983 filter_opts.divert.port = 1; /* some random value */ 2984 #endif 2985 } 2986 | SCRUB '(' scrub_opts ')' { 2987 filter_opts.nodf = $3.nodf; 2988 filter_opts.minttl = $3.minttl; 2989 if ($3.marker & FOM_SETTOS) { 2990 /* Old style rules are "scrub set-tos 0x42" 2991 * New style are "set tos 0x42 scrub (...)" 2992 * What is in "scrub(...)"" is unfortunately the 2993 * original scrub syntax so it would overwrite 2994 * "set tos" of a pass/match rule. 2995 */ 2996 filter_opts.settos = $3.settos; 2997 } 2998 filter_opts.randomid = $3.randomid; 2999 filter_opts.max_mss = $3.maxmss; 3000 if ($3.reassemble_tcp) 3001 filter_opts.marker |= FOM_SCRUB_TCP; 3002 filter_opts.marker |= $3.marker; 3003 } 3004 | filter_sets 3005 ; 3006 3007 filter_sets : SET '(' filter_sets_l ')' { $$ = filter_opts; } 3008 | SET filter_set { $$ = filter_opts; } 3009 ; 3010 3011 filter_sets_l : filter_sets_l comma filter_set 3012 | filter_set 3013 ; 3014 3015 filter_set : prio { 3016 if (filter_opts.marker & FOM_SETPRIO) { 3017 yyerror("prio cannot be redefined"); 3018 YYERROR; 3019 } 3020 filter_opts.marker |= FOM_SETPRIO; 3021 filter_opts.set_prio[0] = $1.b1; 3022 filter_opts.set_prio[1] = $1.b2; 3023 } 3024 | TOS tos { 3025 if (filter_opts.marker & FOM_SETTOS) { 3026 yyerror("tos cannot be respecified"); 3027 YYERROR; 3028 } 3029 filter_opts.marker |= FOM_SETTOS; 3030 filter_opts.settos = $2; 3031 } 3032 prio : PRIO NUMBER { 3033 if ($2 < 0 || $2 > PF_PRIO_MAX) { 3034 yyerror("prio must be 0 - %u", PF_PRIO_MAX); 3035 YYERROR; 3036 } 3037 $$.b1 = $$.b2 = $2; 3038 } 3039 | PRIO '(' NUMBER comma NUMBER ')' { 3040 if ($3 < 0 || $3 > PF_PRIO_MAX || 3041 $5 < 0 || $5 > PF_PRIO_MAX) { 3042 yyerror("prio must be 0 - %u", PF_PRIO_MAX); 3043 YYERROR; 3044 } 3045 $$.b1 = $3; 3046 $$.b2 = $5; 3047 } 3048 ; 3049 3050 probability : STRING { 3051 char *e; 3052 double p = strtod($1, &e); 3053 3054 if (*e == '%') { 3055 p *= 0.01; 3056 e++; 3057 } 3058 if (*e) { 3059 yyerror("invalid probability: %s", $1); 3060 free($1); 3061 YYERROR; 3062 } 3063 free($1); 3064 $$ = p; 3065 } 3066 | NUMBER { 3067 $$ = (double)$1; 3068 } 3069 ; 3070 3071 3072 action : PASS { 3073 $$.b1 = PF_PASS; 3074 $$.b2 = failpolicy; 3075 $$.w = returnicmpdefault; 3076 $$.w2 = returnicmp6default; 3077 } 3078 | MATCH { $$.b1 = PF_MATCH; $$.b2 = $$.w = 0; } 3079 | BLOCK blockspec { $$ = $2; $$.b1 = PF_DROP; } 3080 ; 3081 3082 blockspec : /* empty */ { 3083 $$.b2 = blockpolicy; 3084 $$.w = returnicmpdefault; 3085 $$.w2 = returnicmp6default; 3086 } 3087 | DROP { 3088 $$.b2 = PFRULE_DROP; 3089 $$.w = 0; 3090 $$.w2 = 0; 3091 } 3092 | RETURNRST { 3093 $$.b2 = PFRULE_RETURNRST; 3094 $$.w = 0; 3095 $$.w2 = 0; 3096 } 3097 | RETURNRST '(' TTL NUMBER ')' { 3098 if ($4 < 0 || $4 > 255) { 3099 yyerror("illegal ttl value %d", $4); 3100 YYERROR; 3101 } 3102 $$.b2 = PFRULE_RETURNRST; 3103 $$.w = $4; 3104 $$.w2 = 0; 3105 } 3106 | RETURNICMP { 3107 $$.b2 = PFRULE_RETURNICMP; 3108 $$.w = returnicmpdefault; 3109 $$.w2 = returnicmp6default; 3110 } 3111 | RETURNICMP6 { 3112 $$.b2 = PFRULE_RETURNICMP; 3113 $$.w = returnicmpdefault; 3114 $$.w2 = returnicmp6default; 3115 } 3116 | RETURNICMP '(' reticmpspec ')' { 3117 $$.b2 = PFRULE_RETURNICMP; 3118 $$.w = $3; 3119 $$.w2 = returnicmpdefault; 3120 } 3121 | RETURNICMP6 '(' reticmp6spec ')' { 3122 $$.b2 = PFRULE_RETURNICMP; 3123 $$.w = returnicmpdefault; 3124 $$.w2 = $3; 3125 } 3126 | RETURNICMP '(' reticmpspec comma reticmp6spec ')' { 3127 $$.b2 = PFRULE_RETURNICMP; 3128 $$.w = $3; 3129 $$.w2 = $5; 3130 } 3131 | RETURN { 3132 $$.b2 = PFRULE_RETURN; 3133 $$.w = returnicmpdefault; 3134 $$.w2 = returnicmp6default; 3135 } 3136 ; 3137 3138 reticmpspec : STRING { 3139 if (!($$ = parseicmpspec($1, AF_INET))) { 3140 free($1); 3141 YYERROR; 3142 } 3143 free($1); 3144 } 3145 | NUMBER { 3146 u_int8_t icmptype; 3147 3148 if ($1 < 0 || $1 > 255) { 3149 yyerror("invalid icmp code %lu", $1); 3150 YYERROR; 3151 } 3152 icmptype = returnicmpdefault >> 8; 3153 $$ = (icmptype << 8 | $1); 3154 } 3155 ; 3156 3157 reticmp6spec : STRING { 3158 if (!($$ = parseicmpspec($1, AF_INET6))) { 3159 free($1); 3160 YYERROR; 3161 } 3162 free($1); 3163 } 3164 | NUMBER { 3165 u_int8_t icmptype; 3166 3167 if ($1 < 0 || $1 > 255) { 3168 yyerror("invalid icmp code %lu", $1); 3169 YYERROR; 3170 } 3171 icmptype = returnicmp6default >> 8; 3172 $$ = (icmptype << 8 | $1); 3173 } 3174 ; 3175 3176 dir : /* empty */ { $$ = PF_INOUT; } 3177 | IN { $$ = PF_IN; } 3178 | OUT { $$ = PF_OUT; } 3179 ; 3180 3181 quick : /* empty */ { $$.quick = 0; } 3182 | QUICK { $$.quick = 1; } 3183 ; 3184 3185 logquick : /* empty */ { $$.log = 0; $$.quick = 0; $$.logif = 0; } 3186 | log { $$ = $1; $$.quick = 0; } 3187 | QUICK { $$.quick = 1; $$.log = 0; $$.logif = 0; } 3188 | log QUICK { $$ = $1; $$.quick = 1; } 3189 | QUICK log { $$ = $2; $$.quick = 1; } 3190 ; 3191 3192 log : LOG { $$.log = PF_LOG; $$.logif = 0; } 3193 | LOG '(' logopts ')' { 3194 $$.log = PF_LOG | $3.log; 3195 $$.logif = $3.logif; 3196 } 3197 ; 3198 3199 logopts : logopt { $$ = $1; } 3200 | logopts comma logopt { 3201 $$.log = $1.log | $3.log; 3202 $$.logif = $3.logif; 3203 if ($$.logif == 0) 3204 $$.logif = $1.logif; 3205 } 3206 ; 3207 3208 logopt : ALL { $$.log = PF_LOG_ALL; $$.logif = 0; } 3209 | USER { $$.log = PF_LOG_SOCKET_LOOKUP; $$.logif = 0; } 3210 | GROUP { $$.log = PF_LOG_SOCKET_LOOKUP; $$.logif = 0; } 3211 | TO string { 3212 const char *errstr; 3213 u_int i; 3214 3215 $$.log = 0; 3216 if (strncmp($2, "pflog", 5)) { 3217 yyerror("%s: should be a pflog interface", $2); 3218 free($2); 3219 YYERROR; 3220 } 3221 i = strtonum($2 + 5, 0, 255, &errstr); 3222 if (errstr) { 3223 yyerror("%s: %s", $2, errstr); 3224 free($2); 3225 YYERROR; 3226 } 3227 free($2); 3228 $$.logif = i; 3229 } 3230 ; 3231 3232 interface : /* empty */ { $$ = NULL; } 3233 | ON if_item_not { $$ = $2; } 3234 | ON '{' optnl if_list '}' { $$ = $4; } 3235 ; 3236 3237 if_list : if_item_not optnl { $$ = $1; } 3238 | if_list comma if_item_not optnl { 3239 $1->tail->next = $3; 3240 $1->tail = $3; 3241 $$ = $1; 3242 } 3243 ; 3244 3245 if_item_not : not if_item { $$ = $2; $$->not = $1; } 3246 ; 3247 3248 if_item : STRING { 3249 struct node_host *n; 3250 3251 $$ = calloc(1, sizeof(struct node_if)); 3252 if ($$ == NULL) 3253 err(1, "if_item: calloc"); 3254 if (strlcpy($$->ifname, $1, sizeof($$->ifname)) >= 3255 sizeof($$->ifname)) { 3256 free($1); 3257 free($$); 3258 yyerror("interface name too long"); 3259 YYERROR; 3260 } 3261 3262 if ((n = ifa_exists($1)) != NULL) 3263 $$->ifa_flags = n->ifa_flags; 3264 3265 free($1); 3266 $$->not = 0; 3267 $$->next = NULL; 3268 $$->tail = $$; 3269 } 3270 ; 3271 3272 af : /* empty */ { $$ = 0; } 3273 | INET { $$ = AF_INET; } 3274 | INET6 { $$ = AF_INET6; } 3275 ; 3276 3277 etherproto : /* empty */ { $$ = NULL; } 3278 | PROTO etherproto_item { $$ = $2; } 3279 | PROTO '{' optnl etherproto_list '}' { $$ = $4; } 3280 ; 3281 3282 etherproto_list : etherproto_item optnl { $$ = $1; } 3283 | etherproto_list comma etherproto_item optnl { 3284 $1->tail->next = $3; 3285 $1->tail = $3; 3286 $$ = $1; 3287 } 3288 ; 3289 3290 etherproto_item : etherprotoval { 3291 u_int16_t pr; 3292 3293 pr = (u_int16_t)$1; 3294 if (pr == 0) { 3295 yyerror("proto 0 cannot be used"); 3296 YYERROR; 3297 } 3298 $$ = calloc(1, sizeof(struct node_proto)); 3299 if ($$ == NULL) 3300 err(1, "proto_item: calloc"); 3301 $$->proto = pr; 3302 $$->next = NULL; 3303 $$->tail = $$; 3304 } 3305 ; 3306 3307 etherprotoval : NUMBER { 3308 if ($1 < 0 || $1 > 65565) { 3309 yyerror("protocol outside range"); 3310 YYERROR; 3311 } 3312 } 3313 | STRING 3314 { 3315 if (!strncmp($1, "0x", 2)) { 3316 if (sscanf($1, "0x%4x", &$$) != 1) { 3317 free($1); 3318 yyerror("invalid EtherType hex"); 3319 YYERROR; 3320 } 3321 } else { 3322 yyerror("Symbolic EtherType not yet supported"); 3323 } 3324 } 3325 ; 3326 3327 proto : /* empty */ { $$ = NULL; } 3328 | PROTO proto_item { $$ = $2; } 3329 | PROTO '{' optnl proto_list '}' { $$ = $4; } 3330 ; 3331 3332 proto_list : proto_item optnl { $$ = $1; } 3333 | proto_list comma proto_item optnl { 3334 $1->tail->next = $3; 3335 $1->tail = $3; 3336 $$ = $1; 3337 } 3338 ; 3339 3340 proto_item : protoval { 3341 u_int8_t pr; 3342 3343 pr = (u_int8_t)$1; 3344 if (pr == 0) { 3345 yyerror("proto 0 cannot be used"); 3346 YYERROR; 3347 } 3348 $$ = calloc(1, sizeof(struct node_proto)); 3349 if ($$ == NULL) 3350 err(1, "proto_item: calloc"); 3351 $$->proto = pr; 3352 $$->next = NULL; 3353 $$->tail = $$; 3354 } 3355 ; 3356 3357 protoval : STRING { 3358 struct protoent *p; 3359 3360 p = getprotobyname($1); 3361 if (p == NULL) { 3362 yyerror("unknown protocol %s", $1); 3363 free($1); 3364 YYERROR; 3365 } 3366 $$ = p->p_proto; 3367 free($1); 3368 } 3369 | NUMBER { 3370 if ($1 < 0 || $1 > 255) { 3371 yyerror("protocol outside range"); 3372 YYERROR; 3373 } 3374 } 3375 ; 3376 3377 l3fromto : /* empty */ { 3378 bzero(&$$, sizeof($$)); 3379 } 3380 | L3 fromto { 3381 if ($2.src.host != NULL && 3382 $2.src.host->addr.type != PF_ADDR_ADDRMASK && 3383 $2.src.host->addr.type != PF_ADDR_TABLE) { 3384 yyerror("from must be an address or table"); 3385 YYERROR; 3386 } 3387 if ($2.dst.host != NULL && 3388 $2.dst.host->addr.type != PF_ADDR_ADDRMASK && 3389 $2.dst.host->addr.type != PF_ADDR_TABLE) { 3390 yyerror("to must be an address or table"); 3391 YYERROR; 3392 } 3393 $$ = $2; 3394 } 3395 ; 3396 etherfromto : ALL { 3397 $$.src = NULL; 3398 $$.dst = NULL; 3399 } 3400 | etherfrom etherto { 3401 $$.src = $1.mac; 3402 $$.dst = $2.mac; 3403 } 3404 ; 3405 3406 etherfrom : /* emtpy */ { 3407 bzero(&$$, sizeof($$)); 3408 } 3409 | FROM macspec { 3410 $$.mac = $2; 3411 } 3412 ; 3413 3414 etherto : /* empty */ { 3415 bzero(&$$, sizeof($$)); 3416 } 3417 | TO macspec { 3418 $$.mac = $2; 3419 } 3420 ; 3421 3422 mac : string '/' NUMBER { 3423 $$ = node_mac_from_string_masklen($1, $3); 3424 free($1); 3425 if ($$ == NULL) 3426 YYERROR; 3427 } 3428 | string { 3429 if (strchr($1, '&')) { 3430 /* mac&mask */ 3431 char *mac = strtok($1, "&"); 3432 char *mask = strtok(NULL, "&"); 3433 $$ = node_mac_from_string_mask(mac, mask); 3434 } else { 3435 $$ = node_mac_from_string($1); 3436 } 3437 free($1); 3438 if ($$ == NULL) 3439 YYERROR; 3440 3441 } 3442 xmac : not mac { 3443 struct node_mac *n; 3444 3445 for (n = $2; n != NULL; n = n->next) 3446 n->neg = $1; 3447 $$ = $2; 3448 } 3449 ; 3450 macspec : xmac { 3451 $$ = $1; 3452 } 3453 | '{' optnl mac_list '}' 3454 { 3455 $$ = $3; 3456 } 3457 ; 3458 mac_list : xmac optnl { 3459 $$ = $1; 3460 } 3461 | mac_list comma xmac { 3462 if ($3 == NULL) 3463 $$ = $1; 3464 else if ($1 == NULL) 3465 $$ = $3; 3466 else { 3467 $1->tail->next = $3; 3468 $1->tail = $3->tail; 3469 $$ = $1; 3470 } 3471 } 3472 3473 fromto : ALL { 3474 $$.src.host = NULL; 3475 $$.src.port = NULL; 3476 $$.dst.host = NULL; 3477 $$.dst.port = NULL; 3478 $$.src_os = NULL; 3479 } 3480 | from os to { 3481 $$.src = $1; 3482 $$.src_os = $2; 3483 $$.dst = $3; 3484 } 3485 ; 3486 3487 os : /* empty */ { $$ = NULL; } 3488 | OS xos { $$ = $2; } 3489 | OS '{' optnl os_list '}' { $$ = $4; } 3490 ; 3491 3492 xos : STRING { 3493 $$ = calloc(1, sizeof(struct node_os)); 3494 if ($$ == NULL) 3495 err(1, "os: calloc"); 3496 $$->os = $1; 3497 $$->tail = $$; 3498 } 3499 ; 3500 3501 os_list : xos optnl { $$ = $1; } 3502 | os_list comma xos optnl { 3503 $1->tail->next = $3; 3504 $1->tail = $3; 3505 $$ = $1; 3506 } 3507 ; 3508 3509 from : /* empty */ { 3510 $$.host = NULL; 3511 $$.port = NULL; 3512 } 3513 | FROM ipportspec { 3514 $$ = $2; 3515 } 3516 ; 3517 3518 to : /* empty */ { 3519 $$.host = NULL; 3520 $$.port = NULL; 3521 } 3522 | TO ipportspec { 3523 if (disallow_urpf_failed($2.host, "\"urpf-failed\" is " 3524 "not permitted in a destination address")) 3525 YYERROR; 3526 $$ = $2; 3527 } 3528 ; 3529 3530 ipportspec : ipspec { 3531 $$.host = $1; 3532 $$.port = NULL; 3533 } 3534 | ipspec PORT portspec { 3535 $$.host = $1; 3536 $$.port = $3; 3537 } 3538 | PORT portspec { 3539 $$.host = NULL; 3540 $$.port = $2; 3541 } 3542 ; 3543 3544 optnl : '\n' optnl 3545 | 3546 ; 3547 3548 ipspec : ANY { $$ = NULL; } 3549 | xhost { $$ = $1; } 3550 | '{' optnl host_list '}' { $$ = $3; } 3551 ; 3552 3553 toipspec : TO ipspec { $$ = $2; } 3554 | /* empty */ { $$ = NULL; } 3555 ; 3556 3557 host_list : ipspec optnl { $$ = $1; } 3558 | host_list comma ipspec optnl { 3559 if ($3 == NULL) 3560 $$ = $1; 3561 else if ($1 == NULL) 3562 $$ = $3; 3563 else { 3564 $1->tail->next = $3; 3565 $1->tail = $3->tail; 3566 $$ = $1; 3567 } 3568 } 3569 ; 3570 3571 xhost : not host { 3572 struct node_host *n; 3573 3574 for (n = $2; n != NULL; n = n->next) 3575 n->not = $1; 3576 $$ = $2; 3577 } 3578 | not NOROUTE { 3579 $$ = calloc(1, sizeof(struct node_host)); 3580 if ($$ == NULL) 3581 err(1, "xhost: calloc"); 3582 $$->addr.type = PF_ADDR_NOROUTE; 3583 $$->next = NULL; 3584 $$->not = $1; 3585 $$->tail = $$; 3586 } 3587 | not URPFFAILED { 3588 $$ = calloc(1, sizeof(struct node_host)); 3589 if ($$ == NULL) 3590 err(1, "xhost: calloc"); 3591 $$->addr.type = PF_ADDR_URPFFAILED; 3592 $$->next = NULL; 3593 $$->not = $1; 3594 $$->tail = $$; 3595 } 3596 ; 3597 3598 host : STRING { 3599 if (($$ = host($1)) == NULL) { 3600 /* error. "any" is handled elsewhere */ 3601 free($1); 3602 yyerror("could not parse host specification"); 3603 YYERROR; 3604 } 3605 free($1); 3606 3607 } 3608 | STRING '-' STRING { 3609 struct node_host *b, *e; 3610 3611 if ((b = host($1)) == NULL || (e = host($3)) == NULL) { 3612 free($1); 3613 free($3); 3614 yyerror("could not parse host specification"); 3615 YYERROR; 3616 } 3617 if (b->af != e->af || 3618 b->addr.type != PF_ADDR_ADDRMASK || 3619 e->addr.type != PF_ADDR_ADDRMASK || 3620 unmask(&b->addr.v.a.mask, b->af) != 3621 (b->af == AF_INET ? 32 : 128) || 3622 unmask(&e->addr.v.a.mask, e->af) != 3623 (e->af == AF_INET ? 32 : 128) || 3624 b->next != NULL || b->not || 3625 e->next != NULL || e->not) { 3626 free(b); 3627 free(e); 3628 free($1); 3629 free($3); 3630 yyerror("invalid address range"); 3631 YYERROR; 3632 } 3633 memcpy(&b->addr.v.a.mask, &e->addr.v.a.addr, 3634 sizeof(b->addr.v.a.mask)); 3635 b->addr.type = PF_ADDR_RANGE; 3636 $$ = b; 3637 free(e); 3638 free($1); 3639 free($3); 3640 } 3641 | STRING '/' NUMBER { 3642 char *buf; 3643 3644 if (asprintf(&buf, "%s/%lld", $1, (long long)$3) == -1) 3645 err(1, "host: asprintf"); 3646 free($1); 3647 if (($$ = host(buf)) == NULL) { 3648 /* error. "any" is handled elsewhere */ 3649 free(buf); 3650 yyerror("could not parse host specification"); 3651 YYERROR; 3652 } 3653 free(buf); 3654 } 3655 | NUMBER '/' NUMBER { 3656 char *buf; 3657 3658 /* ie. for 10/8 parsing */ 3659 #ifdef __FreeBSD__ 3660 if (asprintf(&buf, "%lld/%lld", (long long)$1, (long long)$3) == -1) 3661 #else 3662 if (asprintf(&buf, "%lld/%lld", $1, $3) == -1) 3663 #endif 3664 err(1, "host: asprintf"); 3665 if (($$ = host(buf)) == NULL) { 3666 /* error. "any" is handled elsewhere */ 3667 free(buf); 3668 yyerror("could not parse host specification"); 3669 YYERROR; 3670 } 3671 free(buf); 3672 } 3673 | dynaddr 3674 | dynaddr '/' NUMBER { 3675 struct node_host *n; 3676 3677 if ($3 < 0 || $3 > 128) { 3678 yyerror("bit number too big"); 3679 YYERROR; 3680 } 3681 $$ = $1; 3682 for (n = $1; n != NULL; n = n->next) 3683 set_ipmask(n, $3); 3684 } 3685 | '<' STRING '>' { 3686 if (strlen($2) >= PF_TABLE_NAME_SIZE) { 3687 yyerror("table name '%s' too long", $2); 3688 free($2); 3689 YYERROR; 3690 } 3691 $$ = calloc(1, sizeof(struct node_host)); 3692 if ($$ == NULL) 3693 err(1, "host: calloc"); 3694 $$->addr.type = PF_ADDR_TABLE; 3695 if (strlcpy($$->addr.v.tblname, $2, 3696 sizeof($$->addr.v.tblname)) >= 3697 sizeof($$->addr.v.tblname)) 3698 errx(1, "host: strlcpy"); 3699 free($2); 3700 $$->next = NULL; 3701 $$->tail = $$; 3702 } 3703 ; 3704 3705 number : NUMBER 3706 | STRING { 3707 u_long ulval; 3708 3709 if (atoul($1, &ulval) == -1) { 3710 yyerror("%s is not a number", $1); 3711 free($1); 3712 YYERROR; 3713 } else 3714 $$ = ulval; 3715 free($1); 3716 } 3717 ; 3718 3719 dynaddr : '(' STRING ')' { 3720 int flags = 0; 3721 char *p, *op; 3722 3723 op = $2; 3724 if (!isalpha(op[0])) { 3725 yyerror("invalid interface name '%s'", op); 3726 free(op); 3727 YYERROR; 3728 } 3729 while ((p = strrchr($2, ':')) != NULL) { 3730 if (!strcmp(p+1, "network")) 3731 flags |= PFI_AFLAG_NETWORK; 3732 else if (!strcmp(p+1, "broadcast")) 3733 flags |= PFI_AFLAG_BROADCAST; 3734 else if (!strcmp(p+1, "peer")) 3735 flags |= PFI_AFLAG_PEER; 3736 else if (!strcmp(p+1, "0")) 3737 flags |= PFI_AFLAG_NOALIAS; 3738 else { 3739 yyerror("interface %s has bad modifier", 3740 $2); 3741 free(op); 3742 YYERROR; 3743 } 3744 *p = '\0'; 3745 } 3746 if (flags & (flags - 1) & PFI_AFLAG_MODEMASK) { 3747 free(op); 3748 yyerror("illegal combination of " 3749 "interface modifiers"); 3750 YYERROR; 3751 } 3752 $$ = calloc(1, sizeof(struct node_host)); 3753 if ($$ == NULL) 3754 err(1, "address: calloc"); 3755 $$->af = 0; 3756 set_ipmask($$, 128); 3757 $$->addr.type = PF_ADDR_DYNIFTL; 3758 $$->addr.iflags = flags; 3759 if (strlcpy($$->addr.v.ifname, $2, 3760 sizeof($$->addr.v.ifname)) >= 3761 sizeof($$->addr.v.ifname)) { 3762 free(op); 3763 free($$); 3764 yyerror("interface name too long"); 3765 YYERROR; 3766 } 3767 free(op); 3768 $$->next = NULL; 3769 $$->tail = $$; 3770 } 3771 ; 3772 3773 portspec : port_item { $$ = $1; } 3774 | '{' optnl port_list '}' { $$ = $3; } 3775 ; 3776 3777 port_list : port_item optnl { $$ = $1; } 3778 | port_list comma port_item optnl { 3779 $1->tail->next = $3; 3780 $1->tail = $3; 3781 $$ = $1; 3782 } 3783 ; 3784 3785 port_item : portrange { 3786 $$ = calloc(1, sizeof(struct node_port)); 3787 if ($$ == NULL) 3788 err(1, "port_item: calloc"); 3789 $$->port[0] = $1.a; 3790 $$->port[1] = $1.b; 3791 if ($1.t) 3792 $$->op = PF_OP_RRG; 3793 else 3794 $$->op = PF_OP_EQ; 3795 $$->next = NULL; 3796 $$->tail = $$; 3797 } 3798 | unaryop portrange { 3799 if ($2.t) { 3800 yyerror("':' cannot be used with an other " 3801 "port operator"); 3802 YYERROR; 3803 } 3804 $$ = calloc(1, sizeof(struct node_port)); 3805 if ($$ == NULL) 3806 err(1, "port_item: calloc"); 3807 $$->port[0] = $2.a; 3808 $$->port[1] = $2.b; 3809 $$->op = $1; 3810 $$->next = NULL; 3811 $$->tail = $$; 3812 } 3813 | portrange PORTBINARY portrange { 3814 if ($1.t || $3.t) { 3815 yyerror("':' cannot be used with an other " 3816 "port operator"); 3817 YYERROR; 3818 } 3819 $$ = calloc(1, sizeof(struct node_port)); 3820 if ($$ == NULL) 3821 err(1, "port_item: calloc"); 3822 $$->port[0] = $1.a; 3823 $$->port[1] = $3.a; 3824 $$->op = $2; 3825 $$->next = NULL; 3826 $$->tail = $$; 3827 } 3828 ; 3829 3830 portplain : numberstring { 3831 if (parseport($1, &$$, 0) == -1) { 3832 free($1); 3833 YYERROR; 3834 } 3835 free($1); 3836 } 3837 ; 3838 3839 portrange : numberstring { 3840 if (parseport($1, &$$, PPORT_RANGE) == -1) { 3841 free($1); 3842 YYERROR; 3843 } 3844 free($1); 3845 } 3846 ; 3847 3848 uids : uid_item { $$ = $1; } 3849 | '{' optnl uid_list '}' { $$ = $3; } 3850 ; 3851 3852 uid_list : uid_item optnl { $$ = $1; } 3853 | uid_list comma uid_item optnl { 3854 $1->tail->next = $3; 3855 $1->tail = $3; 3856 $$ = $1; 3857 } 3858 ; 3859 3860 uid_item : uid { 3861 $$ = calloc(1, sizeof(struct node_uid)); 3862 if ($$ == NULL) 3863 err(1, "uid_item: calloc"); 3864 $$->uid[0] = $1; 3865 $$->uid[1] = $1; 3866 $$->op = PF_OP_EQ; 3867 $$->next = NULL; 3868 $$->tail = $$; 3869 } 3870 | unaryop uid { 3871 if ($2 == UID_MAX && $1 != PF_OP_EQ && $1 != PF_OP_NE) { 3872 yyerror("user unknown requires operator = or " 3873 "!="); 3874 YYERROR; 3875 } 3876 $$ = calloc(1, sizeof(struct node_uid)); 3877 if ($$ == NULL) 3878 err(1, "uid_item: calloc"); 3879 $$->uid[0] = $2; 3880 $$->uid[1] = $2; 3881 $$->op = $1; 3882 $$->next = NULL; 3883 $$->tail = $$; 3884 } 3885 | uid PORTBINARY uid { 3886 if ($1 == UID_MAX || $3 == UID_MAX) { 3887 yyerror("user unknown requires operator = or " 3888 "!="); 3889 YYERROR; 3890 } 3891 $$ = calloc(1, sizeof(struct node_uid)); 3892 if ($$ == NULL) 3893 err(1, "uid_item: calloc"); 3894 $$->uid[0] = $1; 3895 $$->uid[1] = $3; 3896 $$->op = $2; 3897 $$->next = NULL; 3898 $$->tail = $$; 3899 } 3900 ; 3901 3902 uid : STRING { 3903 if (!strcmp($1, "unknown")) 3904 $$ = UID_MAX; 3905 else { 3906 struct passwd *pw; 3907 3908 if ((pw = getpwnam($1)) == NULL) { 3909 yyerror("unknown user %s", $1); 3910 free($1); 3911 YYERROR; 3912 } 3913 $$ = pw->pw_uid; 3914 } 3915 free($1); 3916 } 3917 | NUMBER { 3918 if ($1 < 0 || $1 >= UID_MAX) { 3919 yyerror("illegal uid value %lu", $1); 3920 YYERROR; 3921 } 3922 $$ = $1; 3923 } 3924 ; 3925 3926 gids : gid_item { $$ = $1; } 3927 | '{' optnl gid_list '}' { $$ = $3; } 3928 ; 3929 3930 gid_list : gid_item optnl { $$ = $1; } 3931 | gid_list comma gid_item optnl { 3932 $1->tail->next = $3; 3933 $1->tail = $3; 3934 $$ = $1; 3935 } 3936 ; 3937 3938 gid_item : gid { 3939 $$ = calloc(1, sizeof(struct node_gid)); 3940 if ($$ == NULL) 3941 err(1, "gid_item: calloc"); 3942 $$->gid[0] = $1; 3943 $$->gid[1] = $1; 3944 $$->op = PF_OP_EQ; 3945 $$->next = NULL; 3946 $$->tail = $$; 3947 } 3948 | unaryop gid { 3949 if ($2 == GID_MAX && $1 != PF_OP_EQ && $1 != PF_OP_NE) { 3950 yyerror("group unknown requires operator = or " 3951 "!="); 3952 YYERROR; 3953 } 3954 $$ = calloc(1, sizeof(struct node_gid)); 3955 if ($$ == NULL) 3956 err(1, "gid_item: calloc"); 3957 $$->gid[0] = $2; 3958 $$->gid[1] = $2; 3959 $$->op = $1; 3960 $$->next = NULL; 3961 $$->tail = $$; 3962 } 3963 | gid PORTBINARY gid { 3964 if ($1 == GID_MAX || $3 == GID_MAX) { 3965 yyerror("group unknown requires operator = or " 3966 "!="); 3967 YYERROR; 3968 } 3969 $$ = calloc(1, sizeof(struct node_gid)); 3970 if ($$ == NULL) 3971 err(1, "gid_item: calloc"); 3972 $$->gid[0] = $1; 3973 $$->gid[1] = $3; 3974 $$->op = $2; 3975 $$->next = NULL; 3976 $$->tail = $$; 3977 } 3978 ; 3979 3980 gid : STRING { 3981 if (!strcmp($1, "unknown")) 3982 $$ = GID_MAX; 3983 else { 3984 struct group *grp; 3985 3986 if ((grp = getgrnam($1)) == NULL) { 3987 yyerror("unknown group %s", $1); 3988 free($1); 3989 YYERROR; 3990 } 3991 $$ = grp->gr_gid; 3992 } 3993 free($1); 3994 } 3995 | NUMBER { 3996 if ($1 < 0 || $1 >= GID_MAX) { 3997 yyerror("illegal gid value %lu", $1); 3998 YYERROR; 3999 } 4000 $$ = $1; 4001 } 4002 ; 4003 4004 flag : STRING { 4005 int f; 4006 4007 if ((f = parse_flags($1)) < 0) { 4008 yyerror("bad flags %s", $1); 4009 free($1); 4010 YYERROR; 4011 } 4012 free($1); 4013 $$.b1 = f; 4014 } 4015 ; 4016 4017 flags : FLAGS flag '/' flag { $$.b1 = $2.b1; $$.b2 = $4.b1; } 4018 | FLAGS '/' flag { $$.b1 = 0; $$.b2 = $3.b1; } 4019 | FLAGS ANY { $$.b1 = 0; $$.b2 = 0; } 4020 ; 4021 4022 icmpspec : ICMPTYPE icmp_item { $$ = $2; } 4023 | ICMPTYPE '{' optnl icmp_list '}' { $$ = $4; } 4024 | ICMP6TYPE icmp6_item { $$ = $2; } 4025 | ICMP6TYPE '{' optnl icmp6_list '}' { $$ = $4; } 4026 ; 4027 4028 icmp_list : icmp_item optnl { $$ = $1; } 4029 | icmp_list comma icmp_item optnl { 4030 $1->tail->next = $3; 4031 $1->tail = $3; 4032 $$ = $1; 4033 } 4034 ; 4035 4036 icmp6_list : icmp6_item optnl { $$ = $1; } 4037 | icmp6_list comma icmp6_item optnl { 4038 $1->tail->next = $3; 4039 $1->tail = $3; 4040 $$ = $1; 4041 } 4042 ; 4043 4044 icmp_item : icmptype { 4045 $$ = calloc(1, sizeof(struct node_icmp)); 4046 if ($$ == NULL) 4047 err(1, "icmp_item: calloc"); 4048 $$->type = $1; 4049 $$->code = 0; 4050 $$->proto = IPPROTO_ICMP; 4051 $$->next = NULL; 4052 $$->tail = $$; 4053 } 4054 | icmptype CODE STRING { 4055 const struct icmpcodeent *p; 4056 4057 if ((p = geticmpcodebyname($1-1, $3, AF_INET)) == NULL) { 4058 yyerror("unknown icmp-code %s", $3); 4059 free($3); 4060 YYERROR; 4061 } 4062 4063 free($3); 4064 $$ = calloc(1, sizeof(struct node_icmp)); 4065 if ($$ == NULL) 4066 err(1, "icmp_item: calloc"); 4067 $$->type = $1; 4068 $$->code = p->code + 1; 4069 $$->proto = IPPROTO_ICMP; 4070 $$->next = NULL; 4071 $$->tail = $$; 4072 } 4073 | icmptype CODE NUMBER { 4074 if ($3 < 0 || $3 > 255) { 4075 yyerror("illegal icmp-code %lu", $3); 4076 YYERROR; 4077 } 4078 $$ = calloc(1, sizeof(struct node_icmp)); 4079 if ($$ == NULL) 4080 err(1, "icmp_item: calloc"); 4081 $$->type = $1; 4082 $$->code = $3 + 1; 4083 $$->proto = IPPROTO_ICMP; 4084 $$->next = NULL; 4085 $$->tail = $$; 4086 } 4087 ; 4088 4089 icmp6_item : icmp6type { 4090 $$ = calloc(1, sizeof(struct node_icmp)); 4091 if ($$ == NULL) 4092 err(1, "icmp_item: calloc"); 4093 $$->type = $1; 4094 $$->code = 0; 4095 $$->proto = IPPROTO_ICMPV6; 4096 $$->next = NULL; 4097 $$->tail = $$; 4098 } 4099 | icmp6type CODE STRING { 4100 const struct icmpcodeent *p; 4101 4102 if ((p = geticmpcodebyname($1-1, $3, AF_INET6)) == NULL) { 4103 yyerror("unknown icmp6-code %s", $3); 4104 free($3); 4105 YYERROR; 4106 } 4107 free($3); 4108 4109 $$ = calloc(1, sizeof(struct node_icmp)); 4110 if ($$ == NULL) 4111 err(1, "icmp_item: calloc"); 4112 $$->type = $1; 4113 $$->code = p->code + 1; 4114 $$->proto = IPPROTO_ICMPV6; 4115 $$->next = NULL; 4116 $$->tail = $$; 4117 } 4118 | icmp6type CODE NUMBER { 4119 if ($3 < 0 || $3 > 255) { 4120 yyerror("illegal icmp-code %lu", $3); 4121 YYERROR; 4122 } 4123 $$ = calloc(1, sizeof(struct node_icmp)); 4124 if ($$ == NULL) 4125 err(1, "icmp_item: calloc"); 4126 $$->type = $1; 4127 $$->code = $3 + 1; 4128 $$->proto = IPPROTO_ICMPV6; 4129 $$->next = NULL; 4130 $$->tail = $$; 4131 } 4132 ; 4133 4134 icmptype : STRING { 4135 const struct icmptypeent *p; 4136 4137 if ((p = geticmptypebyname($1, AF_INET)) == NULL) { 4138 yyerror("unknown icmp-type %s", $1); 4139 free($1); 4140 YYERROR; 4141 } 4142 $$ = p->type + 1; 4143 free($1); 4144 } 4145 | NUMBER { 4146 if ($1 < 0 || $1 > 255) { 4147 yyerror("illegal icmp-type %lu", $1); 4148 YYERROR; 4149 } 4150 $$ = $1 + 1; 4151 } 4152 ; 4153 4154 icmp6type : STRING { 4155 const struct icmptypeent *p; 4156 4157 if ((p = geticmptypebyname($1, AF_INET6)) == 4158 NULL) { 4159 yyerror("unknown icmp6-type %s", $1); 4160 free($1); 4161 YYERROR; 4162 } 4163 $$ = p->type + 1; 4164 free($1); 4165 } 4166 | NUMBER { 4167 if ($1 < 0 || $1 > 255) { 4168 yyerror("illegal icmp6-type %lu", $1); 4169 YYERROR; 4170 } 4171 $$ = $1 + 1; 4172 } 4173 ; 4174 4175 tos : STRING { 4176 int val; 4177 char *end; 4178 4179 if (map_tos($1, &val)) 4180 $$ = val; 4181 else if ($1[0] == '0' && $1[1] == 'x') { 4182 errno = 0; 4183 $$ = strtoul($1, &end, 16); 4184 if (errno || *end != '\0') 4185 $$ = 256; 4186 } else 4187 $$ = 256; /* flag bad argument */ 4188 if ($$ < 0 || $$ > 255) { 4189 yyerror("illegal tos value %s", $1); 4190 free($1); 4191 YYERROR; 4192 } 4193 free($1); 4194 } 4195 | NUMBER { 4196 $$ = $1; 4197 if ($$ < 0 || $$ > 255) { 4198 yyerror("illegal tos value %s", $1); 4199 YYERROR; 4200 } 4201 } 4202 ; 4203 4204 sourcetrack : SOURCETRACK { $$ = PF_SRCTRACK; } 4205 | SOURCETRACK GLOBAL { $$ = PF_SRCTRACK_GLOBAL; } 4206 | SOURCETRACK RULE { $$ = PF_SRCTRACK_RULE; } 4207 ; 4208 4209 statelock : IFBOUND { 4210 $$ = PFRULE_IFBOUND; 4211 } 4212 | FLOATING { 4213 $$ = 0; 4214 } 4215 ; 4216 4217 keep : NO STATE { 4218 $$.action = 0; 4219 $$.options = NULL; 4220 } 4221 | KEEP STATE state_opt_spec { 4222 $$.action = PF_STATE_NORMAL; 4223 $$.options = $3; 4224 } 4225 | MODULATE STATE state_opt_spec { 4226 $$.action = PF_STATE_MODULATE; 4227 $$.options = $3; 4228 } 4229 | SYNPROXY STATE state_opt_spec { 4230 $$.action = PF_STATE_SYNPROXY; 4231 $$.options = $3; 4232 } 4233 ; 4234 4235 flush : /* empty */ { $$ = 0; } 4236 | FLUSH { $$ = PF_FLUSH; } 4237 | FLUSH GLOBAL { 4238 $$ = PF_FLUSH | PF_FLUSH_GLOBAL; 4239 } 4240 ; 4241 4242 state_opt_spec : '(' state_opt_list ')' { $$ = $2; } 4243 | /* empty */ { $$ = NULL; } 4244 ; 4245 4246 state_opt_list : state_opt_item { $$ = $1; } 4247 | state_opt_list comma state_opt_item { 4248 $1->tail->next = $3; 4249 $1->tail = $3; 4250 $$ = $1; 4251 } 4252 ; 4253 4254 state_opt_item : MAXIMUM NUMBER { 4255 if ($2 < 0 || $2 > UINT_MAX) { 4256 yyerror("only positive values permitted"); 4257 YYERROR; 4258 } 4259 $$ = calloc(1, sizeof(struct node_state_opt)); 4260 if ($$ == NULL) 4261 err(1, "state_opt_item: calloc"); 4262 $$->type = PF_STATE_OPT_MAX; 4263 $$->data.max_states = $2; 4264 $$->next = NULL; 4265 $$->tail = $$; 4266 } 4267 | NOSYNC { 4268 $$ = calloc(1, sizeof(struct node_state_opt)); 4269 if ($$ == NULL) 4270 err(1, "state_opt_item: calloc"); 4271 $$->type = PF_STATE_OPT_NOSYNC; 4272 $$->next = NULL; 4273 $$->tail = $$; 4274 } 4275 | MAXSRCSTATES NUMBER { 4276 if ($2 < 0 || $2 > UINT_MAX) { 4277 yyerror("only positive values permitted"); 4278 YYERROR; 4279 } 4280 $$ = calloc(1, sizeof(struct node_state_opt)); 4281 if ($$ == NULL) 4282 err(1, "state_opt_item: calloc"); 4283 $$->type = PF_STATE_OPT_MAX_SRC_STATES; 4284 $$->data.max_src_states = $2; 4285 $$->next = NULL; 4286 $$->tail = $$; 4287 } 4288 | MAXSRCCONN NUMBER { 4289 if ($2 < 0 || $2 > UINT_MAX) { 4290 yyerror("only positive values permitted"); 4291 YYERROR; 4292 } 4293 $$ = calloc(1, sizeof(struct node_state_opt)); 4294 if ($$ == NULL) 4295 err(1, "state_opt_item: calloc"); 4296 $$->type = PF_STATE_OPT_MAX_SRC_CONN; 4297 $$->data.max_src_conn = $2; 4298 $$->next = NULL; 4299 $$->tail = $$; 4300 } 4301 | MAXSRCCONNRATE NUMBER '/' NUMBER { 4302 if ($2 < 0 || $2 > UINT_MAX || 4303 $4 < 0 || $4 > UINT_MAX) { 4304 yyerror("only positive values permitted"); 4305 YYERROR; 4306 } 4307 $$ = calloc(1, sizeof(struct node_state_opt)); 4308 if ($$ == NULL) 4309 err(1, "state_opt_item: calloc"); 4310 $$->type = PF_STATE_OPT_MAX_SRC_CONN_RATE; 4311 $$->data.max_src_conn_rate.limit = $2; 4312 $$->data.max_src_conn_rate.seconds = $4; 4313 $$->next = NULL; 4314 $$->tail = $$; 4315 } 4316 | OVERLOAD '<' STRING '>' flush { 4317 if (strlen($3) >= PF_TABLE_NAME_SIZE) { 4318 yyerror("table name '%s' too long", $3); 4319 free($3); 4320 YYERROR; 4321 } 4322 $$ = calloc(1, sizeof(struct node_state_opt)); 4323 if ($$ == NULL) 4324 err(1, "state_opt_item: calloc"); 4325 if (strlcpy($$->data.overload.tblname, $3, 4326 PF_TABLE_NAME_SIZE) >= PF_TABLE_NAME_SIZE) 4327 errx(1, "state_opt_item: strlcpy"); 4328 free($3); 4329 $$->type = PF_STATE_OPT_OVERLOAD; 4330 $$->data.overload.flush = $5; 4331 $$->next = NULL; 4332 $$->tail = $$; 4333 } 4334 | MAXSRCNODES NUMBER { 4335 if ($2 < 0 || $2 > UINT_MAX) { 4336 yyerror("only positive values permitted"); 4337 YYERROR; 4338 } 4339 $$ = calloc(1, sizeof(struct node_state_opt)); 4340 if ($$ == NULL) 4341 err(1, "state_opt_item: calloc"); 4342 $$->type = PF_STATE_OPT_MAX_SRC_NODES; 4343 $$->data.max_src_nodes = $2; 4344 $$->next = NULL; 4345 $$->tail = $$; 4346 } 4347 | sourcetrack { 4348 $$ = calloc(1, sizeof(struct node_state_opt)); 4349 if ($$ == NULL) 4350 err(1, "state_opt_item: calloc"); 4351 $$->type = PF_STATE_OPT_SRCTRACK; 4352 $$->data.src_track = $1; 4353 $$->next = NULL; 4354 $$->tail = $$; 4355 } 4356 | statelock { 4357 $$ = calloc(1, sizeof(struct node_state_opt)); 4358 if ($$ == NULL) 4359 err(1, "state_opt_item: calloc"); 4360 $$->type = PF_STATE_OPT_STATELOCK; 4361 $$->data.statelock = $1; 4362 $$->next = NULL; 4363 $$->tail = $$; 4364 } 4365 | SLOPPY { 4366 $$ = calloc(1, sizeof(struct node_state_opt)); 4367 if ($$ == NULL) 4368 err(1, "state_opt_item: calloc"); 4369 $$->type = PF_STATE_OPT_SLOPPY; 4370 $$->next = NULL; 4371 $$->tail = $$; 4372 } 4373 | STRING NUMBER { 4374 int i; 4375 4376 if ($2 < 0 || $2 > UINT_MAX) { 4377 yyerror("only positive values permitted"); 4378 YYERROR; 4379 } 4380 for (i = 0; pf_timeouts[i].name && 4381 strcmp(pf_timeouts[i].name, $1); ++i) 4382 ; /* nothing */ 4383 if (!pf_timeouts[i].name) { 4384 yyerror("illegal timeout name %s", $1); 4385 free($1); 4386 YYERROR; 4387 } 4388 if (strchr(pf_timeouts[i].name, '.') == NULL) { 4389 yyerror("illegal state timeout %s", $1); 4390 free($1); 4391 YYERROR; 4392 } 4393 free($1); 4394 $$ = calloc(1, sizeof(struct node_state_opt)); 4395 if ($$ == NULL) 4396 err(1, "state_opt_item: calloc"); 4397 $$->type = PF_STATE_OPT_TIMEOUT; 4398 $$->data.timeout.number = pf_timeouts[i].timeout; 4399 $$->data.timeout.seconds = $2; 4400 $$->next = NULL; 4401 $$->tail = $$; 4402 } 4403 ; 4404 4405 label : LABEL STRING { 4406 $$ = $2; 4407 } 4408 ; 4409 4410 etherqname : QUEUE STRING { 4411 $$.qname = $2; 4412 } 4413 | QUEUE '(' STRING ')' { 4414 $$.qname = $3; 4415 } 4416 ; 4417 4418 qname : QUEUE STRING { 4419 $$.qname = $2; 4420 $$.pqname = NULL; 4421 } 4422 | QUEUE '(' STRING ')' { 4423 $$.qname = $3; 4424 $$.pqname = NULL; 4425 } 4426 | QUEUE '(' STRING comma STRING ')' { 4427 $$.qname = $3; 4428 $$.pqname = $5; 4429 } 4430 ; 4431 4432 no : /* empty */ { $$ = 0; } 4433 | NO { $$ = 1; } 4434 ; 4435 4436 portstar : numberstring { 4437 if (parseport($1, &$$, PPORT_RANGE|PPORT_STAR) == -1) { 4438 free($1); 4439 YYERROR; 4440 } 4441 free($1); 4442 } 4443 ; 4444 4445 redirspec : host { $$ = $1; } 4446 | '{' optnl redir_host_list '}' { $$ = $3; } 4447 ; 4448 4449 redir_host_list : host optnl { $$ = $1; } 4450 | redir_host_list comma host optnl { 4451 $1->tail->next = $3; 4452 $1->tail = $3->tail; 4453 $$ = $1; 4454 } 4455 ; 4456 4457 redirpool : /* empty */ { $$ = NULL; } 4458 | ARROW redirspec { 4459 $$ = calloc(1, sizeof(struct redirection)); 4460 if ($$ == NULL) 4461 err(1, "redirection: calloc"); 4462 $$->host = $2; 4463 $$->rport.a = $$->rport.b = $$->rport.t = 0; 4464 } 4465 | ARROW redirspec PORT portstar { 4466 $$ = calloc(1, sizeof(struct redirection)); 4467 if ($$ == NULL) 4468 err(1, "redirection: calloc"); 4469 $$->host = $2; 4470 $$->rport = $4; 4471 } 4472 ; 4473 4474 hashkey : /* empty */ 4475 { 4476 $$ = calloc(1, sizeof(struct pf_poolhashkey)); 4477 if ($$ == NULL) 4478 err(1, "hashkey: calloc"); 4479 $$->key32[0] = arc4random(); 4480 $$->key32[1] = arc4random(); 4481 $$->key32[2] = arc4random(); 4482 $$->key32[3] = arc4random(); 4483 } 4484 | string 4485 { 4486 if (!strncmp($1, "0x", 2)) { 4487 if (strlen($1) != 34) { 4488 free($1); 4489 yyerror("hex key must be 128 bits " 4490 "(32 hex digits) long"); 4491 YYERROR; 4492 } 4493 $$ = calloc(1, sizeof(struct pf_poolhashkey)); 4494 if ($$ == NULL) 4495 err(1, "hashkey: calloc"); 4496 4497 if (sscanf($1, "0x%8x%8x%8x%8x", 4498 &$$->key32[0], &$$->key32[1], 4499 &$$->key32[2], &$$->key32[3]) != 4) { 4500 free($$); 4501 free($1); 4502 yyerror("invalid hex key"); 4503 YYERROR; 4504 } 4505 } else { 4506 MD5_CTX context; 4507 4508 $$ = calloc(1, sizeof(struct pf_poolhashkey)); 4509 if ($$ == NULL) 4510 err(1, "hashkey: calloc"); 4511 MD5Init(&context); 4512 MD5Update(&context, (unsigned char *)$1, 4513 strlen($1)); 4514 MD5Final((unsigned char *)$$, &context); 4515 HTONL($$->key32[0]); 4516 HTONL($$->key32[1]); 4517 HTONL($$->key32[2]); 4518 HTONL($$->key32[3]); 4519 } 4520 free($1); 4521 } 4522 ; 4523 4524 pool_opts : { bzero(&pool_opts, sizeof pool_opts); } 4525 pool_opts_l 4526 { $$ = pool_opts; } 4527 | /* empty */ { 4528 bzero(&pool_opts, sizeof pool_opts); 4529 $$ = pool_opts; 4530 } 4531 ; 4532 4533 pool_opts_l : pool_opts_l pool_opt 4534 | pool_opt 4535 ; 4536 4537 pool_opt : BITMASK { 4538 if (pool_opts.type) { 4539 yyerror("pool type cannot be redefined"); 4540 YYERROR; 4541 } 4542 pool_opts.type = PF_POOL_BITMASK; 4543 } 4544 | RANDOM { 4545 if (pool_opts.type) { 4546 yyerror("pool type cannot be redefined"); 4547 YYERROR; 4548 } 4549 pool_opts.type = PF_POOL_RANDOM; 4550 } 4551 | SOURCEHASH hashkey { 4552 if (pool_opts.type) { 4553 yyerror("pool type cannot be redefined"); 4554 YYERROR; 4555 } 4556 pool_opts.type = PF_POOL_SRCHASH; 4557 pool_opts.key = $2; 4558 } 4559 | ROUNDROBIN { 4560 if (pool_opts.type) { 4561 yyerror("pool type cannot be redefined"); 4562 YYERROR; 4563 } 4564 pool_opts.type = PF_POOL_ROUNDROBIN; 4565 } 4566 | STATICPORT { 4567 if (pool_opts.staticport) { 4568 yyerror("static-port cannot be redefined"); 4569 YYERROR; 4570 } 4571 pool_opts.staticport = 1; 4572 } 4573 | STICKYADDRESS { 4574 if (pool_opts.marker & POM_STICKYADDRESS) { 4575 yyerror("sticky-address cannot be redefined"); 4576 YYERROR; 4577 } 4578 pool_opts.marker |= POM_STICKYADDRESS; 4579 pool_opts.opts |= PF_POOL_STICKYADDR; 4580 } 4581 | MAPEPORTSET number '/' number '/' number { 4582 if (pool_opts.mape.offset) { 4583 yyerror("map-e-portset cannot be redefined"); 4584 YYERROR; 4585 } 4586 if (pool_opts.type) { 4587 yyerror("map-e-portset cannot be used with " 4588 "address pools"); 4589 YYERROR; 4590 } 4591 if ($2 <= 0 || $2 >= 16) { 4592 yyerror("MAP-E PSID offset must be 1-15"); 4593 YYERROR; 4594 } 4595 if ($4 < 0 || $4 >= 16 || $2 + $4 > 16) { 4596 yyerror("Invalid MAP-E PSID length"); 4597 YYERROR; 4598 } else if ($4 == 0) { 4599 yyerror("PSID Length = 0: this means" 4600 " you do not need MAP-E"); 4601 YYERROR; 4602 } 4603 if ($6 < 0 || $6 > 65535) { 4604 yyerror("Invalid MAP-E PSID"); 4605 YYERROR; 4606 } 4607 pool_opts.mape.offset = $2; 4608 pool_opts.mape.psidlen = $4; 4609 pool_opts.mape.psid = $6; 4610 } 4611 ; 4612 4613 redirection : /* empty */ { $$ = NULL; } 4614 | ARROW host { 4615 $$ = calloc(1, sizeof(struct redirection)); 4616 if ($$ == NULL) 4617 err(1, "redirection: calloc"); 4618 $$->host = $2; 4619 $$->rport.a = $$->rport.b = $$->rport.t = 0; 4620 } 4621 | ARROW host PORT portstar { 4622 $$ = calloc(1, sizeof(struct redirection)); 4623 if ($$ == NULL) 4624 err(1, "redirection: calloc"); 4625 $$->host = $2; 4626 $$->rport = $4; 4627 } 4628 ; 4629 4630 natpasslog : /* empty */ { $$.b1 = $$.b2 = 0; $$.w2 = 0; } 4631 | PASS { $$.b1 = 1; $$.b2 = 0; $$.w2 = 0; } 4632 | PASS log { $$.b1 = 1; $$.b2 = $2.log; $$.w2 = $2.logif; } 4633 | log { $$.b1 = 0; $$.b2 = $1.log; $$.w2 = $1.logif; } 4634 ; 4635 4636 nataction : no NAT natpasslog { 4637 if ($1 && $3.b1) { 4638 yyerror("\"pass\" not valid with \"no\""); 4639 YYERROR; 4640 } 4641 if ($1) 4642 $$.b1 = PF_NONAT; 4643 else 4644 $$.b1 = PF_NAT; 4645 $$.b2 = $3.b1; 4646 $$.w = $3.b2; 4647 $$.w2 = $3.w2; 4648 } 4649 | no RDR natpasslog { 4650 if ($1 && $3.b1) { 4651 yyerror("\"pass\" not valid with \"no\""); 4652 YYERROR; 4653 } 4654 if ($1) 4655 $$.b1 = PF_NORDR; 4656 else 4657 $$.b1 = PF_RDR; 4658 $$.b2 = $3.b1; 4659 $$.w = $3.b2; 4660 $$.w2 = $3.w2; 4661 } 4662 ; 4663 4664 natrule : nataction interface af proto fromto tag tagged rtable 4665 redirpool pool_opts 4666 { 4667 struct pfctl_rule r; 4668 4669 if (check_rulestate(PFCTL_STATE_NAT)) 4670 YYERROR; 4671 4672 memset(&r, 0, sizeof(r)); 4673 4674 r.action = $1.b1; 4675 r.natpass = $1.b2; 4676 r.log = $1.w; 4677 r.logif = $1.w2; 4678 r.af = $3; 4679 4680 if (!r.af) { 4681 if ($5.src.host && $5.src.host->af && 4682 !$5.src.host->ifindex) 4683 r.af = $5.src.host->af; 4684 else if ($5.dst.host && $5.dst.host->af && 4685 !$5.dst.host->ifindex) 4686 r.af = $5.dst.host->af; 4687 } 4688 4689 if ($6 != NULL) 4690 if (strlcpy(r.tagname, $6, PF_TAG_NAME_SIZE) >= 4691 PF_TAG_NAME_SIZE) { 4692 yyerror("tag too long, max %u chars", 4693 PF_TAG_NAME_SIZE - 1); 4694 YYERROR; 4695 } 4696 4697 if ($7.name) 4698 if (strlcpy(r.match_tagname, $7.name, 4699 PF_TAG_NAME_SIZE) >= PF_TAG_NAME_SIZE) { 4700 yyerror("tag too long, max %u chars", 4701 PF_TAG_NAME_SIZE - 1); 4702 YYERROR; 4703 } 4704 r.match_tag_not = $7.neg; 4705 r.rtableid = $8; 4706 4707 if (r.action == PF_NONAT || r.action == PF_NORDR) { 4708 if ($9 != NULL) { 4709 yyerror("translation rule with 'no' " 4710 "does not need '->'"); 4711 YYERROR; 4712 } 4713 } else { 4714 if ($9 == NULL || $9->host == NULL) { 4715 yyerror("translation rule requires '-> " 4716 "address'"); 4717 YYERROR; 4718 } 4719 if (!r.af && ! $9->host->ifindex) 4720 r.af = $9->host->af; 4721 4722 remove_invalid_hosts(&$9->host, &r.af); 4723 if (invalid_redirect($9->host, r.af)) 4724 YYERROR; 4725 if (check_netmask($9->host, r.af)) 4726 YYERROR; 4727 4728 r.rpool.proxy_port[0] = ntohs($9->rport.a); 4729 4730 switch (r.action) { 4731 case PF_RDR: 4732 if (!$9->rport.b && $9->rport.t && 4733 $5.dst.port != NULL) { 4734 r.rpool.proxy_port[1] = 4735 ntohs($9->rport.a) + 4736 (ntohs( 4737 $5.dst.port->port[1]) - 4738 ntohs( 4739 $5.dst.port->port[0])); 4740 } else 4741 r.rpool.proxy_port[1] = 4742 ntohs($9->rport.b); 4743 break; 4744 case PF_NAT: 4745 r.rpool.proxy_port[1] = 4746 ntohs($9->rport.b); 4747 if (!r.rpool.proxy_port[0] && 4748 !r.rpool.proxy_port[1]) { 4749 r.rpool.proxy_port[0] = 4750 PF_NAT_PROXY_PORT_LOW; 4751 r.rpool.proxy_port[1] = 4752 PF_NAT_PROXY_PORT_HIGH; 4753 } else if (!r.rpool.proxy_port[1]) 4754 r.rpool.proxy_port[1] = 4755 r.rpool.proxy_port[0]; 4756 break; 4757 default: 4758 break; 4759 } 4760 4761 r.rpool.opts = $10.type; 4762 if ((r.rpool.opts & PF_POOL_TYPEMASK) == 4763 PF_POOL_NONE && ($9->host->next != NULL || 4764 $9->host->addr.type == PF_ADDR_TABLE || 4765 DYNIF_MULTIADDR($9->host->addr))) 4766 r.rpool.opts = PF_POOL_ROUNDROBIN; 4767 if ((r.rpool.opts & PF_POOL_TYPEMASK) != 4768 PF_POOL_ROUNDROBIN && 4769 disallow_table($9->host, "tables are only " 4770 "supported in round-robin redirection " 4771 "pools")) 4772 YYERROR; 4773 if ((r.rpool.opts & PF_POOL_TYPEMASK) != 4774 PF_POOL_ROUNDROBIN && 4775 disallow_alias($9->host, "interface (%s) " 4776 "is only supported in round-robin " 4777 "redirection pools")) 4778 YYERROR; 4779 if ($9->host->next != NULL) { 4780 if ((r.rpool.opts & PF_POOL_TYPEMASK) != 4781 PF_POOL_ROUNDROBIN) { 4782 yyerror("only round-robin " 4783 "valid for multiple " 4784 "redirection addresses"); 4785 YYERROR; 4786 } 4787 } 4788 } 4789 4790 if ($10.key != NULL) 4791 memcpy(&r.rpool.key, $10.key, 4792 sizeof(struct pf_poolhashkey)); 4793 4794 if ($10.opts) 4795 r.rpool.opts |= $10.opts; 4796 4797 if ($10.staticport) { 4798 if (r.action != PF_NAT) { 4799 yyerror("the 'static-port' option is " 4800 "only valid with nat rules"); 4801 YYERROR; 4802 } 4803 if (r.rpool.proxy_port[0] != 4804 PF_NAT_PROXY_PORT_LOW && 4805 r.rpool.proxy_port[1] != 4806 PF_NAT_PROXY_PORT_HIGH) { 4807 yyerror("the 'static-port' option can't" 4808 " be used when specifying a port" 4809 " range"); 4810 YYERROR; 4811 } 4812 r.rpool.proxy_port[0] = 0; 4813 r.rpool.proxy_port[1] = 0; 4814 } 4815 4816 if ($10.mape.offset) { 4817 if (r.action != PF_NAT) { 4818 yyerror("the 'map-e-portset' option is" 4819 " only valid with nat rules"); 4820 YYERROR; 4821 } 4822 if ($10.staticport) { 4823 yyerror("the 'map-e-portset' option" 4824 " can't be used 'static-port'"); 4825 YYERROR; 4826 } 4827 if (r.rpool.proxy_port[0] != 4828 PF_NAT_PROXY_PORT_LOW && 4829 r.rpool.proxy_port[1] != 4830 PF_NAT_PROXY_PORT_HIGH) { 4831 yyerror("the 'map-e-portset' option" 4832 " can't be used when specifying" 4833 " a port range"); 4834 YYERROR; 4835 } 4836 r.rpool.mape = $10.mape; 4837 } 4838 4839 expand_rule(&r, $2, $9 == NULL ? NULL : $9->host, $4, 4840 $5.src_os, $5.src.host, $5.src.port, $5.dst.host, 4841 $5.dst.port, 0, 0, 0, ""); 4842 free($9); 4843 } 4844 ; 4845 4846 binatrule : no BINAT natpasslog interface af proto FROM ipspec toipspec tag 4847 tagged rtable redirection 4848 { 4849 struct pfctl_rule binat; 4850 struct pf_pooladdr *pa; 4851 4852 if (check_rulestate(PFCTL_STATE_NAT)) 4853 YYERROR; 4854 if (disallow_urpf_failed($9, "\"urpf-failed\" is not " 4855 "permitted as a binat destination")) 4856 YYERROR; 4857 4858 memset(&binat, 0, sizeof(binat)); 4859 4860 if ($1 && $3.b1) { 4861 yyerror("\"pass\" not valid with \"no\""); 4862 YYERROR; 4863 } 4864 if ($1) 4865 binat.action = PF_NOBINAT; 4866 else 4867 binat.action = PF_BINAT; 4868 binat.natpass = $3.b1; 4869 binat.log = $3.b2; 4870 binat.logif = $3.w2; 4871 binat.af = $5; 4872 if (!binat.af && $8 != NULL && $8->af) 4873 binat.af = $8->af; 4874 if (!binat.af && $9 != NULL && $9->af) 4875 binat.af = $9->af; 4876 4877 if (!binat.af && $13 != NULL && $13->host) 4878 binat.af = $13->host->af; 4879 if (!binat.af) { 4880 yyerror("address family (inet/inet6) " 4881 "undefined"); 4882 YYERROR; 4883 } 4884 4885 if ($4 != NULL) { 4886 memcpy(binat.ifname, $4->ifname, 4887 sizeof(binat.ifname)); 4888 binat.ifnot = $4->not; 4889 free($4); 4890 } 4891 4892 if ($10 != NULL) 4893 if (strlcpy(binat.tagname, $10, 4894 PF_TAG_NAME_SIZE) >= PF_TAG_NAME_SIZE) { 4895 yyerror("tag too long, max %u chars", 4896 PF_TAG_NAME_SIZE - 1); 4897 YYERROR; 4898 } 4899 if ($11.name) 4900 if (strlcpy(binat.match_tagname, $11.name, 4901 PF_TAG_NAME_SIZE) >= PF_TAG_NAME_SIZE) { 4902 yyerror("tag too long, max %u chars", 4903 PF_TAG_NAME_SIZE - 1); 4904 YYERROR; 4905 } 4906 binat.match_tag_not = $11.neg; 4907 binat.rtableid = $12; 4908 4909 if ($6 != NULL) { 4910 binat.proto = $6->proto; 4911 free($6); 4912 } 4913 4914 if ($8 != NULL && disallow_table($8, "invalid use of " 4915 "table <%s> as the source address of a binat rule")) 4916 YYERROR; 4917 if ($8 != NULL && disallow_alias($8, "invalid use of " 4918 "interface (%s) as the source address of a binat " 4919 "rule")) 4920 YYERROR; 4921 if ($13 != NULL && $13->host != NULL && disallow_table( 4922 $13->host, "invalid use of table <%s> as the " 4923 "redirect address of a binat rule")) 4924 YYERROR; 4925 if ($13 != NULL && $13->host != NULL && disallow_alias( 4926 $13->host, "invalid use of interface (%s) as the " 4927 "redirect address of a binat rule")) 4928 YYERROR; 4929 4930 if ($8 != NULL) { 4931 if ($8->next) { 4932 yyerror("multiple binat ip addresses"); 4933 YYERROR; 4934 } 4935 if ($8->addr.type == PF_ADDR_DYNIFTL) 4936 $8->af = binat.af; 4937 if ($8->af != binat.af) { 4938 yyerror("binat ip versions must match"); 4939 YYERROR; 4940 } 4941 if (check_netmask($8, binat.af)) 4942 YYERROR; 4943 memcpy(&binat.src.addr, &$8->addr, 4944 sizeof(binat.src.addr)); 4945 free($8); 4946 } 4947 if ($9 != NULL) { 4948 if ($9->next) { 4949 yyerror("multiple binat ip addresses"); 4950 YYERROR; 4951 } 4952 if ($9->af != binat.af && $9->af) { 4953 yyerror("binat ip versions must match"); 4954 YYERROR; 4955 } 4956 if (check_netmask($9, binat.af)) 4957 YYERROR; 4958 memcpy(&binat.dst.addr, &$9->addr, 4959 sizeof(binat.dst.addr)); 4960 binat.dst.neg = $9->not; 4961 free($9); 4962 } 4963 4964 if (binat.action == PF_NOBINAT) { 4965 if ($13 != NULL) { 4966 yyerror("'no binat' rule does not need" 4967 " '->'"); 4968 YYERROR; 4969 } 4970 } else { 4971 if ($13 == NULL || $13->host == NULL) { 4972 yyerror("'binat' rule requires" 4973 " '-> address'"); 4974 YYERROR; 4975 } 4976 4977 remove_invalid_hosts(&$13->host, &binat.af); 4978 if (invalid_redirect($13->host, binat.af)) 4979 YYERROR; 4980 if ($13->host->next != NULL) { 4981 yyerror("binat rule must redirect to " 4982 "a single address"); 4983 YYERROR; 4984 } 4985 if (check_netmask($13->host, binat.af)) 4986 YYERROR; 4987 4988 if (!PF_AZERO(&binat.src.addr.v.a.mask, 4989 binat.af) && 4990 !PF_AEQ(&binat.src.addr.v.a.mask, 4991 &$13->host->addr.v.a.mask, binat.af)) { 4992 yyerror("'binat' source mask and " 4993 "redirect mask must be the same"); 4994 YYERROR; 4995 } 4996 4997 TAILQ_INIT(&binat.rpool.list); 4998 pa = calloc(1, sizeof(struct pf_pooladdr)); 4999 if (pa == NULL) 5000 err(1, "binat: calloc"); 5001 pa->addr = $13->host->addr; 5002 pa->ifname[0] = 0; 5003 TAILQ_INSERT_TAIL(&binat.rpool.list, 5004 pa, entries); 5005 5006 free($13); 5007 } 5008 5009 pfctl_append_rule(pf, &binat, ""); 5010 } 5011 ; 5012 5013 tag : /* empty */ { $$ = NULL; } 5014 | TAG STRING { $$ = $2; } 5015 ; 5016 5017 tagged : /* empty */ { $$.neg = 0; $$.name = NULL; } 5018 | not TAGGED string { $$.neg = $1; $$.name = $3; } 5019 ; 5020 5021 rtable : /* empty */ { $$ = -1; } 5022 | RTABLE NUMBER { 5023 if ($2 < 0 || $2 > rt_tableid_max()) { 5024 yyerror("invalid rtable id"); 5025 YYERROR; 5026 } 5027 $$ = $2; 5028 } 5029 ; 5030 5031 route_host : STRING { 5032 $$ = calloc(1, sizeof(struct node_host)); 5033 if ($$ == NULL) 5034 err(1, "route_host: calloc"); 5035 if (strlen($1) >= IFNAMSIZ) { 5036 yyerror("interface name too long"); 5037 YYERROR; 5038 } 5039 $$->ifname = strdup($1); 5040 set_ipmask($$, 128); 5041 $$->next = NULL; 5042 $$->tail = $$; 5043 } 5044 | '(' STRING host ')' { 5045 struct node_host *n; 5046 5047 $$ = $3; 5048 for (n = $3; n != NULL; n = n->next) { 5049 if (strlen($2) >= IFNAMSIZ) { 5050 yyerror("interface name too long"); 5051 YYERROR; 5052 } 5053 n->ifname = strdup($2); 5054 } 5055 } 5056 ; 5057 5058 route_host_list : route_host optnl { $$ = $1; } 5059 | route_host_list comma route_host optnl { 5060 if ($1->af == 0) 5061 $1->af = $3->af; 5062 if ($1->af != $3->af) { 5063 yyerror("all pool addresses must be in the " 5064 "same address family"); 5065 YYERROR; 5066 } 5067 $1->tail->next = $3; 5068 $1->tail = $3->tail; 5069 $$ = $1; 5070 } 5071 ; 5072 5073 routespec : route_host { $$ = $1; } 5074 | '{' optnl route_host_list '}' { $$ = $3; } 5075 ; 5076 5077 route : /* empty */ { 5078 $$.host = NULL; 5079 $$.rt = 0; 5080 $$.pool_opts = 0; 5081 } 5082 | FASTROUTE { 5083 /* backwards-compat */ 5084 $$.host = NULL; 5085 $$.rt = 0; 5086 $$.pool_opts = 0; 5087 } 5088 | ROUTETO routespec pool_opts { 5089 $$.host = $2; 5090 $$.rt = PF_ROUTETO; 5091 $$.pool_opts = $3.type | $3.opts; 5092 if ($3.key != NULL) 5093 $$.key = $3.key; 5094 } 5095 | REPLYTO routespec pool_opts { 5096 $$.host = $2; 5097 $$.rt = PF_REPLYTO; 5098 $$.pool_opts = $3.type | $3.opts; 5099 if ($3.key != NULL) 5100 $$.key = $3.key; 5101 } 5102 | DUPTO routespec pool_opts { 5103 $$.host = $2; 5104 $$.rt = PF_DUPTO; 5105 $$.pool_opts = $3.type | $3.opts; 5106 if ($3.key != NULL) 5107 $$.key = $3.key; 5108 } 5109 ; 5110 5111 timeout_spec : STRING NUMBER 5112 { 5113 if (check_rulestate(PFCTL_STATE_OPTION)) { 5114 free($1); 5115 YYERROR; 5116 } 5117 if ($2 < 0 || $2 > UINT_MAX) { 5118 yyerror("only positive values permitted"); 5119 YYERROR; 5120 } 5121 if (pfctl_set_timeout(pf, $1, $2, 0) != 0) { 5122 yyerror("unknown timeout %s", $1); 5123 free($1); 5124 YYERROR; 5125 } 5126 free($1); 5127 } 5128 | INTERVAL NUMBER { 5129 if (check_rulestate(PFCTL_STATE_OPTION)) 5130 YYERROR; 5131 if ($2 < 0 || $2 > UINT_MAX) { 5132 yyerror("only positive values permitted"); 5133 YYERROR; 5134 } 5135 if (pfctl_set_timeout(pf, "interval", $2, 0) != 0) 5136 YYERROR; 5137 } 5138 ; 5139 5140 timeout_list : timeout_list comma timeout_spec optnl 5141 | timeout_spec optnl 5142 ; 5143 5144 limit_spec : STRING NUMBER 5145 { 5146 if (check_rulestate(PFCTL_STATE_OPTION)) { 5147 free($1); 5148 YYERROR; 5149 } 5150 if ($2 < 0 || $2 > UINT_MAX) { 5151 yyerror("only positive values permitted"); 5152 YYERROR; 5153 } 5154 if (pfctl_set_limit(pf, $1, $2) != 0) { 5155 yyerror("unable to set limit %s %u", $1, $2); 5156 free($1); 5157 YYERROR; 5158 } 5159 free($1); 5160 } 5161 ; 5162 5163 limit_list : limit_list comma limit_spec optnl 5164 | limit_spec optnl 5165 ; 5166 5167 comma : ',' 5168 | /* empty */ 5169 ; 5170 5171 yesno : NO { $$ = 0; } 5172 | STRING { 5173 if (!strcmp($1, "yes")) 5174 $$ = 1; 5175 else { 5176 yyerror("invalid value '%s', expected 'yes' " 5177 "or 'no'", $1); 5178 free($1); 5179 YYERROR; 5180 } 5181 free($1); 5182 } 5183 ; 5184 5185 unaryop : '=' { $$ = PF_OP_EQ; } 5186 | '!' '=' { $$ = PF_OP_NE; } 5187 | '<' '=' { $$ = PF_OP_LE; } 5188 | '<' { $$ = PF_OP_LT; } 5189 | '>' '=' { $$ = PF_OP_GE; } 5190 | '>' { $$ = PF_OP_GT; } 5191 ; 5192 5193 %% 5194 5195 int 5196 yyerror(const char *fmt, ...) 5197 { 5198 va_list ap; 5199 5200 file->errors++; 5201 va_start(ap, fmt); 5202 fprintf(stderr, "%s:%d: ", file->name, yylval.lineno); 5203 vfprintf(stderr, fmt, ap); 5204 fprintf(stderr, "\n"); 5205 va_end(ap); 5206 return (0); 5207 } 5208 5209 int 5210 disallow_table(struct node_host *h, const char *fmt) 5211 { 5212 for (; h != NULL; h = h->next) 5213 if (h->addr.type == PF_ADDR_TABLE) { 5214 yyerror(fmt, h->addr.v.tblname); 5215 return (1); 5216 } 5217 return (0); 5218 } 5219 5220 int 5221 disallow_urpf_failed(struct node_host *h, const char *fmt) 5222 { 5223 for (; h != NULL; h = h->next) 5224 if (h->addr.type == PF_ADDR_URPFFAILED) { 5225 yyerror(fmt); 5226 return (1); 5227 } 5228 return (0); 5229 } 5230 5231 int 5232 disallow_alias(struct node_host *h, const char *fmt) 5233 { 5234 for (; h != NULL; h = h->next) 5235 if (DYNIF_MULTIADDR(h->addr)) { 5236 yyerror(fmt, h->addr.v.tblname); 5237 return (1); 5238 } 5239 return (0); 5240 } 5241 5242 int 5243 rule_consistent(struct pfctl_rule *r, int anchor_call) 5244 { 5245 int problems = 0; 5246 5247 switch (r->action) { 5248 case PF_PASS: 5249 case PF_MATCH: 5250 case PF_DROP: 5251 case PF_SCRUB: 5252 case PF_NOSCRUB: 5253 problems = filter_consistent(r, anchor_call); 5254 break; 5255 case PF_NAT: 5256 case PF_NONAT: 5257 problems = nat_consistent(r); 5258 break; 5259 case PF_RDR: 5260 case PF_NORDR: 5261 problems = rdr_consistent(r); 5262 break; 5263 case PF_BINAT: 5264 case PF_NOBINAT: 5265 default: 5266 break; 5267 } 5268 return (problems); 5269 } 5270 5271 int 5272 filter_consistent(struct pfctl_rule *r, int anchor_call) 5273 { 5274 int problems = 0; 5275 5276 if (r->proto != IPPROTO_TCP && r->proto != IPPROTO_UDP && 5277 r->proto != IPPROTO_SCTP && 5278 (r->src.port_op || r->dst.port_op)) { 5279 yyerror("port only applies to tcp/udp/sctp"); 5280 problems++; 5281 } 5282 if (r->proto != IPPROTO_ICMP && r->proto != IPPROTO_ICMPV6 && 5283 (r->type || r->code)) { 5284 yyerror("icmp-type/code only applies to icmp"); 5285 problems++; 5286 } 5287 if (!r->af && (r->type || r->code)) { 5288 yyerror("must indicate address family with icmp-type/code"); 5289 problems++; 5290 } 5291 if (r->overload_tblname[0] && 5292 r->max_src_conn == 0 && r->max_src_conn_rate.seconds == 0) { 5293 yyerror("'overload' requires 'max-src-conn' " 5294 "or 'max-src-conn-rate'"); 5295 problems++; 5296 } 5297 if ((r->proto == IPPROTO_ICMP && r->af == AF_INET6) || 5298 (r->proto == IPPROTO_ICMPV6 && r->af == AF_INET)) { 5299 yyerror("proto %s doesn't match address family %s", 5300 r->proto == IPPROTO_ICMP ? "icmp" : "icmp6", 5301 r->af == AF_INET ? "inet" : "inet6"); 5302 problems++; 5303 } 5304 if (r->allow_opts && r->action != PF_PASS) { 5305 yyerror("allow-opts can only be specified for pass rules"); 5306 problems++; 5307 } 5308 if (r->rule_flag & PFRULE_FRAGMENT && (r->src.port_op || 5309 r->dst.port_op || r->flagset || r->type || r->code)) { 5310 yyerror("fragments can be filtered only on IP header fields"); 5311 problems++; 5312 } 5313 if (r->rule_flag & PFRULE_RETURNRST && r->proto != IPPROTO_TCP) { 5314 yyerror("return-rst can only be applied to TCP rules"); 5315 problems++; 5316 } 5317 if (r->max_src_nodes && !(r->rule_flag & PFRULE_RULESRCTRACK)) { 5318 yyerror("max-src-nodes requires 'source-track rule'"); 5319 problems++; 5320 } 5321 if (r->action != PF_PASS && r->keep_state) { 5322 yyerror("keep state is great, but only for pass rules"); 5323 problems++; 5324 } 5325 if (r->rule_flag & PFRULE_STATESLOPPY && 5326 (r->keep_state == PF_STATE_MODULATE || 5327 r->keep_state == PF_STATE_SYNPROXY)) { 5328 yyerror("sloppy state matching cannot be used with " 5329 "synproxy state or modulate state"); 5330 problems++; 5331 } 5332 /* match rules rules */ 5333 if (r->action == PF_MATCH) { 5334 if (r->divert.port) { 5335 yyerror("divert is not supported on match rules"); 5336 problems++; 5337 } 5338 if (r->rt) { 5339 yyerror("route-to, reply-to, dup-to and fastroute " 5340 "must not be used on match rules"); 5341 problems++; 5342 } 5343 } 5344 return (-problems); 5345 } 5346 5347 int 5348 nat_consistent(struct pfctl_rule *r) 5349 { 5350 return (0); /* yeah! */ 5351 } 5352 5353 int 5354 rdr_consistent(struct pfctl_rule *r) 5355 { 5356 int problems = 0; 5357 5358 if (r->proto != IPPROTO_TCP && r->proto != IPPROTO_UDP && 5359 r->proto != IPPROTO_SCTP) { 5360 if (r->src.port_op) { 5361 yyerror("src port only applies to tcp/udp/sctp"); 5362 problems++; 5363 } 5364 if (r->dst.port_op) { 5365 yyerror("dst port only applies to tcp/udp/sctp"); 5366 problems++; 5367 } 5368 if (r->rpool.proxy_port[0]) { 5369 yyerror("rpool port only applies to tcp/udp/sctp"); 5370 problems++; 5371 } 5372 } 5373 if (r->dst.port_op && 5374 r->dst.port_op != PF_OP_EQ && r->dst.port_op != PF_OP_RRG) { 5375 yyerror("invalid port operator for rdr destination port"); 5376 problems++; 5377 } 5378 return (-problems); 5379 } 5380 5381 int 5382 process_tabledef(char *name, struct table_opts *opts) 5383 { 5384 struct pfr_buffer ab; 5385 struct node_tinit *ti; 5386 unsigned long maxcount; 5387 size_t s = sizeof(maxcount); 5388 5389 bzero(&ab, sizeof(ab)); 5390 ab.pfrb_type = PFRB_ADDRS; 5391 SIMPLEQ_FOREACH(ti, &opts->init_nodes, entries) { 5392 if (ti->file) 5393 if (pfr_buf_load(&ab, ti->file, 0, append_addr)) { 5394 if (errno) 5395 yyerror("cannot load \"%s\": %s", 5396 ti->file, strerror(errno)); 5397 else 5398 yyerror("file \"%s\" contains bad data", 5399 ti->file); 5400 goto _error; 5401 } 5402 if (ti->host) 5403 if (append_addr_host(&ab, ti->host, 0, 0)) { 5404 yyerror("cannot create address buffer: %s", 5405 strerror(errno)); 5406 goto _error; 5407 } 5408 } 5409 if (pf->opts & PF_OPT_VERBOSE) 5410 print_tabledef(name, opts->flags, opts->init_addr, 5411 &opts->init_nodes); 5412 if (!(pf->opts & PF_OPT_NOACTION) && 5413 pfctl_define_table(name, opts->flags, opts->init_addr, 5414 pf->anchor->name, &ab, pf->anchor->ruleset.tticket)) { 5415 5416 if (sysctlbyname("net.pf.request_maxcount", &maxcount, &s, 5417 NULL, 0) == -1) 5418 maxcount = 65535; 5419 5420 if (ab.pfrb_size > maxcount) 5421 yyerror("cannot define table %s: too many elements.\n" 5422 "Consider increasing net.pf.request_maxcount.", 5423 name); 5424 else 5425 yyerror("cannot define table %s: %s", name, 5426 pfr_strerror(errno)); 5427 5428 goto _error; 5429 } 5430 pf->tdirty = 1; 5431 pfr_buf_clear(&ab); 5432 return (0); 5433 _error: 5434 pfr_buf_clear(&ab); 5435 return (-1); 5436 } 5437 5438 struct keywords { 5439 const char *k_name; 5440 int k_val; 5441 }; 5442 5443 /* macro gore, but you should've seen the prior indentation nightmare... */ 5444 5445 #define FREE_LIST(T,r) \ 5446 do { \ 5447 T *p, *node = r; \ 5448 while (node != NULL) { \ 5449 p = node; \ 5450 node = node->next; \ 5451 free(p); \ 5452 } \ 5453 } while (0) 5454 5455 #define LOOP_THROUGH(T,n,r,C) \ 5456 do { \ 5457 T *n; \ 5458 if (r == NULL) { \ 5459 r = calloc(1, sizeof(T)); \ 5460 if (r == NULL) \ 5461 err(1, "LOOP: calloc"); \ 5462 r->next = NULL; \ 5463 } \ 5464 n = r; \ 5465 while (n != NULL) { \ 5466 do { \ 5467 C; \ 5468 } while (0); \ 5469 n = n->next; \ 5470 } \ 5471 } while (0) 5472 5473 void 5474 expand_label_str(char *label, size_t len, const char *srch, const char *repl) 5475 { 5476 char *tmp; 5477 char *p, *q; 5478 5479 if ((tmp = calloc(1, len)) == NULL) 5480 err(1, "expand_label_str: calloc"); 5481 p = q = label; 5482 while ((q = strstr(p, srch)) != NULL) { 5483 *q = '\0'; 5484 if ((strlcat(tmp, p, len) >= len) || 5485 (strlcat(tmp, repl, len) >= len)) 5486 errx(1, "expand_label: label too long"); 5487 q += strlen(srch); 5488 p = q; 5489 } 5490 if (strlcat(tmp, p, len) >= len) 5491 errx(1, "expand_label: label too long"); 5492 strlcpy(label, tmp, len); /* always fits */ 5493 free(tmp); 5494 } 5495 5496 void 5497 expand_label_if(const char *name, char *label, size_t len, const char *ifname) 5498 { 5499 if (strstr(label, name) != NULL) { 5500 if (!*ifname) 5501 expand_label_str(label, len, name, "any"); 5502 else 5503 expand_label_str(label, len, name, ifname); 5504 } 5505 } 5506 5507 void 5508 expand_label_addr(const char *name, char *label, size_t len, sa_family_t af, 5509 struct pf_rule_addr *addr) 5510 { 5511 char tmp[64], tmp_not[66]; 5512 5513 if (strstr(label, name) != NULL) { 5514 switch (addr->addr.type) { 5515 case PF_ADDR_DYNIFTL: 5516 snprintf(tmp, sizeof(tmp), "(%s)", addr->addr.v.ifname); 5517 break; 5518 case PF_ADDR_TABLE: 5519 snprintf(tmp, sizeof(tmp), "<%s>", addr->addr.v.tblname); 5520 break; 5521 case PF_ADDR_NOROUTE: 5522 snprintf(tmp, sizeof(tmp), "no-route"); 5523 break; 5524 case PF_ADDR_URPFFAILED: 5525 snprintf(tmp, sizeof(tmp), "urpf-failed"); 5526 break; 5527 case PF_ADDR_ADDRMASK: 5528 if (!af || (PF_AZERO(&addr->addr.v.a.addr, af) && 5529 PF_AZERO(&addr->addr.v.a.mask, af))) 5530 snprintf(tmp, sizeof(tmp), "any"); 5531 else { 5532 char a[48]; 5533 int bits; 5534 5535 if (inet_ntop(af, &addr->addr.v.a.addr, a, 5536 sizeof(a)) == NULL) 5537 snprintf(tmp, sizeof(tmp), "?"); 5538 else { 5539 bits = unmask(&addr->addr.v.a.mask, af); 5540 if ((af == AF_INET && bits < 32) || 5541 (af == AF_INET6 && bits < 128)) 5542 snprintf(tmp, sizeof(tmp), 5543 "%s/%d", a, bits); 5544 else 5545 snprintf(tmp, sizeof(tmp), 5546 "%s", a); 5547 } 5548 } 5549 break; 5550 default: 5551 snprintf(tmp, sizeof(tmp), "?"); 5552 break; 5553 } 5554 5555 if (addr->neg) { 5556 snprintf(tmp_not, sizeof(tmp_not), "! %s", tmp); 5557 expand_label_str(label, len, name, tmp_not); 5558 } else 5559 expand_label_str(label, len, name, tmp); 5560 } 5561 } 5562 5563 void 5564 expand_label_port(const char *name, char *label, size_t len, 5565 struct pf_rule_addr *addr) 5566 { 5567 char a1[6], a2[6], op[13] = ""; 5568 5569 if (strstr(label, name) != NULL) { 5570 snprintf(a1, sizeof(a1), "%u", ntohs(addr->port[0])); 5571 snprintf(a2, sizeof(a2), "%u", ntohs(addr->port[1])); 5572 if (!addr->port_op) 5573 ; 5574 else if (addr->port_op == PF_OP_IRG) 5575 snprintf(op, sizeof(op), "%s><%s", a1, a2); 5576 else if (addr->port_op == PF_OP_XRG) 5577 snprintf(op, sizeof(op), "%s<>%s", a1, a2); 5578 else if (addr->port_op == PF_OP_EQ) 5579 snprintf(op, sizeof(op), "%s", a1); 5580 else if (addr->port_op == PF_OP_NE) 5581 snprintf(op, sizeof(op), "!=%s", a1); 5582 else if (addr->port_op == PF_OP_LT) 5583 snprintf(op, sizeof(op), "<%s", a1); 5584 else if (addr->port_op == PF_OP_LE) 5585 snprintf(op, sizeof(op), "<=%s", a1); 5586 else if (addr->port_op == PF_OP_GT) 5587 snprintf(op, sizeof(op), ">%s", a1); 5588 else if (addr->port_op == PF_OP_GE) 5589 snprintf(op, sizeof(op), ">=%s", a1); 5590 expand_label_str(label, len, name, op); 5591 } 5592 } 5593 5594 void 5595 expand_label_proto(const char *name, char *label, size_t len, u_int8_t proto) 5596 { 5597 const char *protoname; 5598 char n[4]; 5599 5600 if (strstr(label, name) != NULL) { 5601 protoname = pfctl_proto2name(proto); 5602 if (protoname != NULL) 5603 expand_label_str(label, len, name, protoname); 5604 else { 5605 snprintf(n, sizeof(n), "%u", proto); 5606 expand_label_str(label, len, name, n); 5607 } 5608 } 5609 } 5610 5611 void 5612 expand_label_nr(const char *name, char *label, size_t len, 5613 struct pfctl_rule *r) 5614 { 5615 char n[11]; 5616 5617 if (strstr(label, name) != NULL) { 5618 snprintf(n, sizeof(n), "%u", r->nr); 5619 expand_label_str(label, len, name, n); 5620 } 5621 } 5622 5623 void 5624 expand_label(char *label, size_t len, struct pfctl_rule *r) 5625 { 5626 expand_label_if("$if", label, len, r->ifname); 5627 expand_label_addr("$srcaddr", label, len, r->af, &r->src); 5628 expand_label_addr("$dstaddr", label, len, r->af, &r->dst); 5629 expand_label_port("$srcport", label, len, &r->src); 5630 expand_label_port("$dstport", label, len, &r->dst); 5631 expand_label_proto("$proto", label, len, r->proto); 5632 expand_label_nr("$nr", label, len, r); 5633 } 5634 5635 int 5636 expand_altq(struct pf_altq *a, struct node_if *interfaces, 5637 struct node_queue *nqueues, struct node_queue_bw bwspec, 5638 struct node_queue_opt *opts) 5639 { 5640 struct pf_altq pa, pb; 5641 char qname[PF_QNAME_SIZE]; 5642 struct node_queue *n; 5643 struct node_queue_bw bw; 5644 int errs = 0; 5645 5646 if ((pf->loadopt & PFCTL_FLAG_ALTQ) == 0) { 5647 FREE_LIST(struct node_if, interfaces); 5648 if (nqueues) 5649 FREE_LIST(struct node_queue, nqueues); 5650 return (0); 5651 } 5652 5653 LOOP_THROUGH(struct node_if, interface, interfaces, 5654 memcpy(&pa, a, sizeof(struct pf_altq)); 5655 if (strlcpy(pa.ifname, interface->ifname, 5656 sizeof(pa.ifname)) >= sizeof(pa.ifname)) 5657 errx(1, "expand_altq: strlcpy"); 5658 5659 if (interface->not) { 5660 yyerror("altq on ! <interface> is not supported"); 5661 errs++; 5662 } else { 5663 if (eval_pfaltq(pf, &pa, &bwspec, opts)) 5664 errs++; 5665 else 5666 if (pfctl_add_altq(pf, &pa)) 5667 errs++; 5668 5669 if (pf->opts & PF_OPT_VERBOSE) { 5670 print_altq(&pf->paltq->altq, 0, 5671 &bwspec, opts); 5672 if (nqueues && nqueues->tail) { 5673 printf("queue { "); 5674 LOOP_THROUGH(struct node_queue, queue, 5675 nqueues, 5676 printf("%s ", 5677 queue->queue); 5678 ); 5679 printf("}"); 5680 } 5681 printf("\n"); 5682 } 5683 5684 if (pa.scheduler == ALTQT_CBQ || 5685 pa.scheduler == ALTQT_HFSC || 5686 pa.scheduler == ALTQT_FAIRQ) { 5687 /* now create a root queue */ 5688 memset(&pb, 0, sizeof(struct pf_altq)); 5689 if (strlcpy(qname, "root_", sizeof(qname)) >= 5690 sizeof(qname)) 5691 errx(1, "expand_altq: strlcpy"); 5692 if (strlcat(qname, interface->ifname, 5693 sizeof(qname)) >= sizeof(qname)) 5694 errx(1, "expand_altq: strlcat"); 5695 if (strlcpy(pb.qname, qname, 5696 sizeof(pb.qname)) >= sizeof(pb.qname)) 5697 errx(1, "expand_altq: strlcpy"); 5698 if (strlcpy(pb.ifname, interface->ifname, 5699 sizeof(pb.ifname)) >= sizeof(pb.ifname)) 5700 errx(1, "expand_altq: strlcpy"); 5701 pb.qlimit = pa.qlimit; 5702 pb.scheduler = pa.scheduler; 5703 bw.bw_absolute = pa.ifbandwidth; 5704 bw.bw_percent = 0; 5705 if (eval_pfqueue(pf, &pb, &bw, opts)) 5706 errs++; 5707 else 5708 if (pfctl_add_altq(pf, &pb)) 5709 errs++; 5710 } 5711 5712 LOOP_THROUGH(struct node_queue, queue, nqueues, 5713 n = calloc(1, sizeof(struct node_queue)); 5714 if (n == NULL) 5715 err(1, "expand_altq: calloc"); 5716 if (pa.scheduler == ALTQT_CBQ || 5717 pa.scheduler == ALTQT_HFSC || 5718 pa.scheduler == ALTQT_FAIRQ) 5719 if (strlcpy(n->parent, qname, 5720 sizeof(n->parent)) >= 5721 sizeof(n->parent)) 5722 errx(1, "expand_altq: strlcpy"); 5723 if (strlcpy(n->queue, queue->queue, 5724 sizeof(n->queue)) >= sizeof(n->queue)) 5725 errx(1, "expand_altq: strlcpy"); 5726 if (strlcpy(n->ifname, interface->ifname, 5727 sizeof(n->ifname)) >= sizeof(n->ifname)) 5728 errx(1, "expand_altq: strlcpy"); 5729 n->scheduler = pa.scheduler; 5730 n->next = NULL; 5731 n->tail = n; 5732 if (queues == NULL) 5733 queues = n; 5734 else { 5735 queues->tail->next = n; 5736 queues->tail = n; 5737 } 5738 ); 5739 } 5740 ); 5741 FREE_LIST(struct node_if, interfaces); 5742 if (nqueues) 5743 FREE_LIST(struct node_queue, nqueues); 5744 5745 return (errs); 5746 } 5747 5748 int 5749 expand_queue(struct pf_altq *a, struct node_if *interfaces, 5750 struct node_queue *nqueues, struct node_queue_bw bwspec, 5751 struct node_queue_opt *opts) 5752 { 5753 struct node_queue *n, *nq; 5754 struct pf_altq pa; 5755 u_int8_t found = 0; 5756 u_int8_t errs = 0; 5757 5758 if ((pf->loadopt & PFCTL_FLAG_ALTQ) == 0) { 5759 FREE_LIST(struct node_queue, nqueues); 5760 return (0); 5761 } 5762 5763 if (queues == NULL) { 5764 yyerror("queue %s has no parent", a->qname); 5765 FREE_LIST(struct node_queue, nqueues); 5766 return (1); 5767 } 5768 5769 LOOP_THROUGH(struct node_if, interface, interfaces, 5770 LOOP_THROUGH(struct node_queue, tqueue, queues, 5771 if (!strncmp(a->qname, tqueue->queue, PF_QNAME_SIZE) && 5772 (interface->ifname[0] == 0 || 5773 (!interface->not && !strncmp(interface->ifname, 5774 tqueue->ifname, IFNAMSIZ)) || 5775 (interface->not && strncmp(interface->ifname, 5776 tqueue->ifname, IFNAMSIZ)))) { 5777 /* found ourself in queues */ 5778 found++; 5779 5780 memcpy(&pa, a, sizeof(struct pf_altq)); 5781 5782 if (pa.scheduler != ALTQT_NONE && 5783 pa.scheduler != tqueue->scheduler) { 5784 yyerror("exactly one scheduler type " 5785 "per interface allowed"); 5786 return (1); 5787 } 5788 pa.scheduler = tqueue->scheduler; 5789 5790 /* scheduler dependent error checking */ 5791 switch (pa.scheduler) { 5792 case ALTQT_PRIQ: 5793 if (nqueues != NULL) { 5794 yyerror("priq queues cannot " 5795 "have child queues"); 5796 return (1); 5797 } 5798 if (bwspec.bw_absolute > 0 || 5799 bwspec.bw_percent < 100) { 5800 yyerror("priq doesn't take " 5801 "bandwidth"); 5802 return (1); 5803 } 5804 break; 5805 default: 5806 break; 5807 } 5808 5809 if (strlcpy(pa.ifname, tqueue->ifname, 5810 sizeof(pa.ifname)) >= sizeof(pa.ifname)) 5811 errx(1, "expand_queue: strlcpy"); 5812 if (strlcpy(pa.parent, tqueue->parent, 5813 sizeof(pa.parent)) >= sizeof(pa.parent)) 5814 errx(1, "expand_queue: strlcpy"); 5815 5816 if (eval_pfqueue(pf, &pa, &bwspec, opts)) 5817 errs++; 5818 else 5819 if (pfctl_add_altq(pf, &pa)) 5820 errs++; 5821 5822 for (nq = nqueues; nq != NULL; nq = nq->next) { 5823 if (!strcmp(a->qname, nq->queue)) { 5824 yyerror("queue cannot have " 5825 "itself as child"); 5826 errs++; 5827 continue; 5828 } 5829 n = calloc(1, 5830 sizeof(struct node_queue)); 5831 if (n == NULL) 5832 err(1, "expand_queue: calloc"); 5833 if (strlcpy(n->parent, a->qname, 5834 sizeof(n->parent)) >= 5835 sizeof(n->parent)) 5836 errx(1, "expand_queue strlcpy"); 5837 if (strlcpy(n->queue, nq->queue, 5838 sizeof(n->queue)) >= 5839 sizeof(n->queue)) 5840 errx(1, "expand_queue strlcpy"); 5841 if (strlcpy(n->ifname, tqueue->ifname, 5842 sizeof(n->ifname)) >= 5843 sizeof(n->ifname)) 5844 errx(1, "expand_queue strlcpy"); 5845 n->scheduler = tqueue->scheduler; 5846 n->next = NULL; 5847 n->tail = n; 5848 if (queues == NULL) 5849 queues = n; 5850 else { 5851 queues->tail->next = n; 5852 queues->tail = n; 5853 } 5854 } 5855 if ((pf->opts & PF_OPT_VERBOSE) && ( 5856 (found == 1 && interface->ifname[0] == 0) || 5857 (found > 0 && interface->ifname[0] != 0))) { 5858 print_queue(&pf->paltq->altq, 0, 5859 &bwspec, interface->ifname[0] != 0, 5860 opts); 5861 if (nqueues && nqueues->tail) { 5862 printf("{ "); 5863 LOOP_THROUGH(struct node_queue, 5864 queue, nqueues, 5865 printf("%s ", 5866 queue->queue); 5867 ); 5868 printf("}"); 5869 } 5870 printf("\n"); 5871 } 5872 } 5873 ); 5874 ); 5875 5876 FREE_LIST(struct node_queue, nqueues); 5877 FREE_LIST(struct node_if, interfaces); 5878 5879 if (!found) { 5880 yyerror("queue %s has no parent", a->qname); 5881 errs++; 5882 } 5883 5884 if (errs) 5885 return (1); 5886 else 5887 return (0); 5888 } 5889 5890 static int 5891 pf_af_to_proto(sa_family_t af) 5892 { 5893 if (af == AF_INET) 5894 return (ETHERTYPE_IP); 5895 if (af == AF_INET6) 5896 return (ETHERTYPE_IPV6); 5897 5898 return (0); 5899 } 5900 5901 void 5902 expand_eth_rule(struct pfctl_eth_rule *r, 5903 struct node_if *interfaces, struct node_etherproto *protos, 5904 struct node_mac *srcs, struct node_mac *dsts, 5905 struct node_host *ipsrcs, struct node_host *ipdsts, 5906 const char *bridge_to, const char *anchor_call) 5907 { 5908 char tagname[PF_TAG_NAME_SIZE]; 5909 char match_tagname[PF_TAG_NAME_SIZE]; 5910 char qname[PF_QNAME_SIZE]; 5911 5912 if (strlcpy(tagname, r->tagname, sizeof(tagname)) >= sizeof(tagname)) 5913 errx(1, "expand_eth_rule: tagname"); 5914 if (strlcpy(match_tagname, r->match_tagname, sizeof(match_tagname)) >= 5915 sizeof(match_tagname)) 5916 errx(1, "expand_eth_rule: match_tagname"); 5917 if (strlcpy(qname, r->qname, sizeof(qname)) >= sizeof(qname)) 5918 errx(1, "expand_eth_rule: qname"); 5919 5920 LOOP_THROUGH(struct node_if, interface, interfaces, 5921 LOOP_THROUGH(struct node_etherproto, proto, protos, 5922 LOOP_THROUGH(struct node_mac, src, srcs, 5923 LOOP_THROUGH(struct node_mac, dst, dsts, 5924 LOOP_THROUGH(struct node_host, ipsrc, ipsrcs, 5925 LOOP_THROUGH(struct node_host, ipdst, ipdsts, 5926 strlcpy(r->ifname, interface->ifname, 5927 sizeof(r->ifname)); 5928 r->ifnot = interface->not; 5929 r->proto = proto->proto; 5930 if (!r->proto && ipsrc->af) 5931 r->proto = pf_af_to_proto(ipsrc->af); 5932 else if (!r->proto && ipdst->af) 5933 r->proto = pf_af_to_proto(ipdst->af); 5934 bcopy(src->mac, r->src.addr, ETHER_ADDR_LEN); 5935 bcopy(src->mask, r->src.mask, ETHER_ADDR_LEN); 5936 r->src.neg = src->neg; 5937 r->src.isset = src->isset; 5938 r->ipsrc.addr = ipsrc->addr; 5939 r->ipsrc.neg = ipsrc->not; 5940 r->ipdst.addr = ipdst->addr; 5941 r->ipdst.neg = ipdst->not; 5942 bcopy(dst->mac, r->dst.addr, ETHER_ADDR_LEN); 5943 bcopy(dst->mask, r->dst.mask, ETHER_ADDR_LEN); 5944 r->dst.neg = dst->neg; 5945 r->dst.isset = dst->isset; 5946 r->nr = pf->eastack[pf->asd]->match++; 5947 5948 if (strlcpy(r->tagname, tagname, sizeof(r->tagname)) >= 5949 sizeof(r->tagname)) 5950 errx(1, "expand_eth_rule: r->tagname"); 5951 if (strlcpy(r->match_tagname, match_tagname, 5952 sizeof(r->match_tagname)) >= sizeof(r->match_tagname)) 5953 errx(1, "expand_eth_rule: r->match_tagname"); 5954 if (strlcpy(r->qname, qname, sizeof(r->qname)) >= sizeof(r->qname)) 5955 errx(1, "expand_eth_rule: r->qname"); 5956 5957 if (bridge_to) 5958 strlcpy(r->bridge_to, bridge_to, sizeof(r->bridge_to)); 5959 5960 pfctl_append_eth_rule(pf, r, anchor_call); 5961 )))))); 5962 5963 FREE_LIST(struct node_if, interfaces); 5964 FREE_LIST(struct node_etherproto, protos); 5965 FREE_LIST(struct node_mac, srcs); 5966 FREE_LIST(struct node_mac, dsts); 5967 FREE_LIST(struct node_host, ipsrcs); 5968 FREE_LIST(struct node_host, ipdsts); 5969 } 5970 5971 void 5972 expand_rule(struct pfctl_rule *r, 5973 struct node_if *interfaces, struct node_host *rpool_hosts, 5974 struct node_proto *protos, struct node_os *src_oses, 5975 struct node_host *src_hosts, struct node_port *src_ports, 5976 struct node_host *dst_hosts, struct node_port *dst_ports, 5977 struct node_uid *uids, struct node_gid *gids, struct node_icmp *icmp_types, 5978 const char *anchor_call) 5979 { 5980 sa_family_t af = r->af; 5981 int added = 0, error = 0; 5982 char ifname[IF_NAMESIZE]; 5983 char label[PF_RULE_MAX_LABEL_COUNT][PF_RULE_LABEL_SIZE]; 5984 char tagname[PF_TAG_NAME_SIZE]; 5985 char match_tagname[PF_TAG_NAME_SIZE]; 5986 struct pf_pooladdr *pa; 5987 struct node_host *h; 5988 u_int8_t flags, flagset, keep_state; 5989 5990 memcpy(label, r->label, sizeof(r->label)); 5991 assert(sizeof(r->label) == sizeof(label)); 5992 if (strlcpy(tagname, r->tagname, sizeof(tagname)) >= sizeof(tagname)) 5993 errx(1, "expand_rule: strlcpy"); 5994 if (strlcpy(match_tagname, r->match_tagname, sizeof(match_tagname)) >= 5995 sizeof(match_tagname)) 5996 errx(1, "expand_rule: strlcpy"); 5997 flags = r->flags; 5998 flagset = r->flagset; 5999 keep_state = r->keep_state; 6000 6001 LOOP_THROUGH(struct node_if, interface, interfaces, 6002 LOOP_THROUGH(struct node_proto, proto, protos, 6003 LOOP_THROUGH(struct node_icmp, icmp_type, icmp_types, 6004 LOOP_THROUGH(struct node_host, src_host, src_hosts, 6005 LOOP_THROUGH(struct node_port, src_port, src_ports, 6006 LOOP_THROUGH(struct node_os, src_os, src_oses, 6007 LOOP_THROUGH(struct node_host, dst_host, dst_hosts, 6008 LOOP_THROUGH(struct node_port, dst_port, dst_ports, 6009 LOOP_THROUGH(struct node_uid, uid, uids, 6010 LOOP_THROUGH(struct node_gid, gid, gids, 6011 6012 r->af = af; 6013 /* for link-local IPv6 address, interface must match up */ 6014 if ((r->af && src_host->af && r->af != src_host->af) || 6015 (r->af && dst_host->af && r->af != dst_host->af) || 6016 (src_host->af && dst_host->af && 6017 src_host->af != dst_host->af) || 6018 (src_host->ifindex && dst_host->ifindex && 6019 src_host->ifindex != dst_host->ifindex) || 6020 (src_host->ifindex && *interface->ifname && 6021 src_host->ifindex != if_nametoindex(interface->ifname)) || 6022 (dst_host->ifindex && *interface->ifname && 6023 dst_host->ifindex != if_nametoindex(interface->ifname))) 6024 continue; 6025 if (!r->af && src_host->af) 6026 r->af = src_host->af; 6027 else if (!r->af && dst_host->af) 6028 r->af = dst_host->af; 6029 6030 if (*interface->ifname) 6031 strlcpy(r->ifname, interface->ifname, 6032 sizeof(r->ifname)); 6033 else if (if_indextoname(src_host->ifindex, ifname)) 6034 strlcpy(r->ifname, ifname, sizeof(r->ifname)); 6035 else if (if_indextoname(dst_host->ifindex, ifname)) 6036 strlcpy(r->ifname, ifname, sizeof(r->ifname)); 6037 else 6038 memset(r->ifname, '\0', sizeof(r->ifname)); 6039 6040 memcpy(r->label, label, sizeof(r->label)); 6041 if (strlcpy(r->tagname, tagname, sizeof(r->tagname)) >= 6042 sizeof(r->tagname)) 6043 errx(1, "expand_rule: strlcpy"); 6044 if (strlcpy(r->match_tagname, match_tagname, 6045 sizeof(r->match_tagname)) >= sizeof(r->match_tagname)) 6046 errx(1, "expand_rule: strlcpy"); 6047 6048 error += check_netmask(src_host, r->af); 6049 error += check_netmask(dst_host, r->af); 6050 6051 r->ifnot = interface->not; 6052 r->proto = proto->proto; 6053 r->src.addr = src_host->addr; 6054 r->src.neg = src_host->not; 6055 r->src.port[0] = src_port->port[0]; 6056 r->src.port[1] = src_port->port[1]; 6057 r->src.port_op = src_port->op; 6058 r->dst.addr = dst_host->addr; 6059 r->dst.neg = dst_host->not; 6060 r->dst.port[0] = dst_port->port[0]; 6061 r->dst.port[1] = dst_port->port[1]; 6062 r->dst.port_op = dst_port->op; 6063 r->uid.op = uid->op; 6064 r->uid.uid[0] = uid->uid[0]; 6065 r->uid.uid[1] = uid->uid[1]; 6066 r->gid.op = gid->op; 6067 r->gid.gid[0] = gid->gid[0]; 6068 r->gid.gid[1] = gid->gid[1]; 6069 r->type = icmp_type->type; 6070 r->code = icmp_type->code; 6071 6072 if ((keep_state == PF_STATE_MODULATE || 6073 keep_state == PF_STATE_SYNPROXY) && 6074 r->proto && r->proto != IPPROTO_TCP) 6075 r->keep_state = PF_STATE_NORMAL; 6076 else 6077 r->keep_state = keep_state; 6078 6079 if (r->proto && r->proto != IPPROTO_TCP) { 6080 r->flags = 0; 6081 r->flagset = 0; 6082 } else { 6083 r->flags = flags; 6084 r->flagset = flagset; 6085 } 6086 if (icmp_type->proto && r->proto != icmp_type->proto) { 6087 yyerror("icmp-type mismatch"); 6088 error++; 6089 } 6090 6091 if (src_os && src_os->os) { 6092 r->os_fingerprint = pfctl_get_fingerprint(src_os->os); 6093 if ((pf->opts & PF_OPT_VERBOSE2) && 6094 r->os_fingerprint == PF_OSFP_NOMATCH) 6095 fprintf(stderr, 6096 "warning: unknown '%s' OS fingerprint\n", 6097 src_os->os); 6098 } else { 6099 r->os_fingerprint = PF_OSFP_ANY; 6100 } 6101 6102 TAILQ_INIT(&r->rpool.list); 6103 for (h = rpool_hosts; h != NULL; h = h->next) { 6104 pa = calloc(1, sizeof(struct pf_pooladdr)); 6105 if (pa == NULL) 6106 err(1, "expand_rule: calloc"); 6107 pa->addr = h->addr; 6108 if (h->ifname != NULL) { 6109 if (strlcpy(pa->ifname, h->ifname, 6110 sizeof(pa->ifname)) >= 6111 sizeof(pa->ifname)) 6112 errx(1, "expand_rule: strlcpy"); 6113 } else 6114 pa->ifname[0] = 0; 6115 TAILQ_INSERT_TAIL(&r->rpool.list, pa, entries); 6116 } 6117 6118 if (rule_consistent(r, anchor_call[0]) < 0 || error) 6119 yyerror("skipping rule due to errors"); 6120 else { 6121 r->nr = pf->astack[pf->asd]->match++; 6122 pfctl_append_rule(pf, r, anchor_call); 6123 added++; 6124 } 6125 6126 )))))))))); 6127 6128 FREE_LIST(struct node_if, interfaces); 6129 FREE_LIST(struct node_proto, protos); 6130 FREE_LIST(struct node_host, src_hosts); 6131 FREE_LIST(struct node_port, src_ports); 6132 FREE_LIST(struct node_os, src_oses); 6133 FREE_LIST(struct node_host, dst_hosts); 6134 FREE_LIST(struct node_port, dst_ports); 6135 FREE_LIST(struct node_uid, uids); 6136 FREE_LIST(struct node_gid, gids); 6137 FREE_LIST(struct node_icmp, icmp_types); 6138 FREE_LIST(struct node_host, rpool_hosts); 6139 6140 if (!added) 6141 yyerror("rule expands to no valid combination"); 6142 } 6143 6144 int 6145 expand_skip_interface(struct node_if *interfaces) 6146 { 6147 int errs = 0; 6148 6149 if (!interfaces || (!interfaces->next && !interfaces->not && 6150 !strcmp(interfaces->ifname, "none"))) { 6151 if (pf->opts & PF_OPT_VERBOSE) 6152 printf("set skip on none\n"); 6153 errs = pfctl_set_interface_flags(pf, "", PFI_IFLAG_SKIP, 0); 6154 return (errs); 6155 } 6156 6157 if (pf->opts & PF_OPT_VERBOSE) 6158 printf("set skip on {"); 6159 LOOP_THROUGH(struct node_if, interface, interfaces, 6160 if (pf->opts & PF_OPT_VERBOSE) 6161 printf(" %s", interface->ifname); 6162 if (interface->not) { 6163 yyerror("skip on ! <interface> is not supported"); 6164 errs++; 6165 } else 6166 errs += pfctl_set_interface_flags(pf, 6167 interface->ifname, PFI_IFLAG_SKIP, 1); 6168 ); 6169 if (pf->opts & PF_OPT_VERBOSE) 6170 printf(" }\n"); 6171 6172 FREE_LIST(struct node_if, interfaces); 6173 6174 if (errs) 6175 return (1); 6176 else 6177 return (0); 6178 } 6179 6180 #undef FREE_LIST 6181 #undef LOOP_THROUGH 6182 6183 int 6184 check_rulestate(int desired_state) 6185 { 6186 if (require_order && (rulestate > desired_state)) { 6187 yyerror("Rules must be in order: options, ethernet, " 6188 "normalization, queueing, translation, filtering"); 6189 return (1); 6190 } 6191 rulestate = desired_state; 6192 return (0); 6193 } 6194 6195 int 6196 kw_cmp(const void *k, const void *e) 6197 { 6198 return (strcmp(k, ((const struct keywords *)e)->k_name)); 6199 } 6200 6201 int 6202 lookup(char *s) 6203 { 6204 /* this has to be sorted always */ 6205 static const struct keywords keywords[] = { 6206 { "all", ALL}, 6207 { "allow-opts", ALLOWOPTS}, 6208 { "altq", ALTQ}, 6209 { "anchor", ANCHOR}, 6210 { "antispoof", ANTISPOOF}, 6211 { "any", ANY}, 6212 { "bandwidth", BANDWIDTH}, 6213 { "binat", BINAT}, 6214 { "binat-anchor", BINATANCHOR}, 6215 { "bitmask", BITMASK}, 6216 { "block", BLOCK}, 6217 { "block-policy", BLOCKPOLICY}, 6218 { "bridge-to", BRIDGE_TO}, 6219 { "buckets", BUCKETS}, 6220 { "cbq", CBQ}, 6221 { "code", CODE}, 6222 { "codelq", CODEL}, 6223 { "debug", DEBUG}, 6224 { "divert-reply", DIVERTREPLY}, 6225 { "divert-to", DIVERTTO}, 6226 { "dnpipe", DNPIPE}, 6227 { "dnqueue", DNQUEUE}, 6228 { "drop", DROP}, 6229 { "dup-to", DUPTO}, 6230 { "ether", ETHER}, 6231 { "fail-policy", FAILPOLICY}, 6232 { "fairq", FAIRQ}, 6233 { "fastroute", FASTROUTE}, 6234 { "file", FILENAME}, 6235 { "fingerprints", FINGERPRINTS}, 6236 { "flags", FLAGS}, 6237 { "floating", FLOATING}, 6238 { "flush", FLUSH}, 6239 { "for", FOR}, 6240 { "fragment", FRAGMENT}, 6241 { "from", FROM}, 6242 { "global", GLOBAL}, 6243 { "group", GROUP}, 6244 { "hfsc", HFSC}, 6245 { "hogs", HOGS}, 6246 { "hostid", HOSTID}, 6247 { "icmp-type", ICMPTYPE}, 6248 { "icmp6-type", ICMP6TYPE}, 6249 { "if-bound", IFBOUND}, 6250 { "in", IN}, 6251 { "include", INCLUDE}, 6252 { "inet", INET}, 6253 { "inet6", INET6}, 6254 { "interval", INTERVAL}, 6255 { "keep", KEEP}, 6256 { "keepcounters", KEEPCOUNTERS}, 6257 { "l3", L3}, 6258 { "label", LABEL}, 6259 { "limit", LIMIT}, 6260 { "linkshare", LINKSHARE}, 6261 { "load", LOAD}, 6262 { "log", LOG}, 6263 { "loginterface", LOGINTERFACE}, 6264 { "map-e-portset", MAPEPORTSET}, 6265 { "match", MATCH}, 6266 { "max", MAXIMUM}, 6267 { "max-mss", MAXMSS}, 6268 { "max-src-conn", MAXSRCCONN}, 6269 { "max-src-conn-rate", MAXSRCCONNRATE}, 6270 { "max-src-nodes", MAXSRCNODES}, 6271 { "max-src-states", MAXSRCSTATES}, 6272 { "min-ttl", MINTTL}, 6273 { "modulate", MODULATE}, 6274 { "nat", NAT}, 6275 { "nat-anchor", NATANCHOR}, 6276 { "no", NO}, 6277 { "no-df", NODF}, 6278 { "no-route", NOROUTE}, 6279 { "no-sync", NOSYNC}, 6280 { "on", ON}, 6281 { "optimization", OPTIMIZATION}, 6282 { "os", OS}, 6283 { "out", OUT}, 6284 { "overload", OVERLOAD}, 6285 { "pass", PASS}, 6286 { "port", PORT}, 6287 { "prio", PRIO}, 6288 { "priority", PRIORITY}, 6289 { "priq", PRIQ}, 6290 { "probability", PROBABILITY}, 6291 { "proto", PROTO}, 6292 { "qlimit", QLIMIT}, 6293 { "queue", QUEUE}, 6294 { "quick", QUICK}, 6295 { "random", RANDOM}, 6296 { "random-id", RANDOMID}, 6297 { "rdr", RDR}, 6298 { "rdr-anchor", RDRANCHOR}, 6299 { "realtime", REALTIME}, 6300 { "reassemble", REASSEMBLE}, 6301 { "reply-to", REPLYTO}, 6302 { "require-order", REQUIREORDER}, 6303 { "return", RETURN}, 6304 { "return-icmp", RETURNICMP}, 6305 { "return-icmp6", RETURNICMP6}, 6306 { "return-rst", RETURNRST}, 6307 { "ridentifier", RIDENTIFIER}, 6308 { "round-robin", ROUNDROBIN}, 6309 { "route", ROUTE}, 6310 { "route-to", ROUTETO}, 6311 { "rtable", RTABLE}, 6312 { "rule", RULE}, 6313 { "ruleset-optimization", RULESET_OPTIMIZATION}, 6314 { "scrub", SCRUB}, 6315 { "set", SET}, 6316 { "set-tos", SETTOS}, 6317 { "skip", SKIP}, 6318 { "sloppy", SLOPPY}, 6319 { "source-hash", SOURCEHASH}, 6320 { "source-track", SOURCETRACK}, 6321 { "state", STATE}, 6322 { "state-defaults", STATEDEFAULTS}, 6323 { "state-policy", STATEPOLICY}, 6324 { "static-port", STATICPORT}, 6325 { "sticky-address", STICKYADDRESS}, 6326 { "syncookies", SYNCOOKIES}, 6327 { "synproxy", SYNPROXY}, 6328 { "table", TABLE}, 6329 { "tag", TAG}, 6330 { "tagged", TAGGED}, 6331 { "target", TARGET}, 6332 { "tbrsize", TBRSIZE}, 6333 { "timeout", TIMEOUT}, 6334 { "to", TO}, 6335 { "tos", TOS}, 6336 { "ttl", TTL}, 6337 { "upperlimit", UPPERLIMIT}, 6338 { "urpf-failed", URPFFAILED}, 6339 { "user", USER}, 6340 }; 6341 const struct keywords *p; 6342 6343 p = bsearch(s, keywords, sizeof(keywords)/sizeof(keywords[0]), 6344 sizeof(keywords[0]), kw_cmp); 6345 6346 if (p) { 6347 if (debug > 1) 6348 fprintf(stderr, "%s: %d\n", s, p->k_val); 6349 return (p->k_val); 6350 } else { 6351 if (debug > 1) 6352 fprintf(stderr, "string: %s\n", s); 6353 return (STRING); 6354 } 6355 } 6356 6357 #define MAXPUSHBACK 128 6358 6359 static char *parsebuf; 6360 static int parseindex; 6361 static char pushback_buffer[MAXPUSHBACK]; 6362 static int pushback_index = 0; 6363 6364 int 6365 lgetc(int quotec) 6366 { 6367 int c, next; 6368 6369 if (parsebuf) { 6370 /* Read character from the parsebuffer instead of input. */ 6371 if (parseindex >= 0) { 6372 c = parsebuf[parseindex++]; 6373 if (c != '\0') 6374 return (c); 6375 parsebuf = NULL; 6376 } else 6377 parseindex++; 6378 } 6379 6380 if (pushback_index) 6381 return (pushback_buffer[--pushback_index]); 6382 6383 if (quotec) { 6384 if ((c = getc(file->stream)) == EOF) { 6385 yyerror("reached end of file while parsing quoted string"); 6386 if (popfile() == EOF) 6387 return (EOF); 6388 return (quotec); 6389 } 6390 return (c); 6391 } 6392 6393 while ((c = getc(file->stream)) == '\\') { 6394 next = getc(file->stream); 6395 if (next != '\n') { 6396 c = next; 6397 break; 6398 } 6399 yylval.lineno = file->lineno; 6400 file->lineno++; 6401 } 6402 6403 while (c == EOF) { 6404 if (popfile() == EOF) 6405 return (EOF); 6406 c = getc(file->stream); 6407 } 6408 return (c); 6409 } 6410 6411 int 6412 lungetc(int c) 6413 { 6414 if (c == EOF) 6415 return (EOF); 6416 if (parsebuf) { 6417 parseindex--; 6418 if (parseindex >= 0) 6419 return (c); 6420 } 6421 if (pushback_index < MAXPUSHBACK-1) 6422 return (pushback_buffer[pushback_index++] = c); 6423 else 6424 return (EOF); 6425 } 6426 6427 int 6428 findeol(void) 6429 { 6430 int c; 6431 6432 parsebuf = NULL; 6433 6434 /* skip to either EOF or the first real EOL */ 6435 while (1) { 6436 if (pushback_index) 6437 c = pushback_buffer[--pushback_index]; 6438 else 6439 c = lgetc(0); 6440 if (c == '\n') { 6441 file->lineno++; 6442 break; 6443 } 6444 if (c == EOF) 6445 break; 6446 } 6447 return (ERROR); 6448 } 6449 6450 int 6451 yylex(void) 6452 { 6453 char buf[8096]; 6454 char *p, *val; 6455 int quotec, next, c; 6456 int token; 6457 6458 top: 6459 p = buf; 6460 while ((c = lgetc(0)) == ' ' || c == '\t') 6461 ; /* nothing */ 6462 6463 yylval.lineno = file->lineno; 6464 if (c == '#') 6465 while ((c = lgetc(0)) != '\n' && c != EOF) 6466 ; /* nothing */ 6467 if (c == '$' && parsebuf == NULL) { 6468 while (1) { 6469 if ((c = lgetc(0)) == EOF) 6470 return (0); 6471 6472 if (p + 1 >= buf + sizeof(buf) - 1) { 6473 yyerror("string too long"); 6474 return (findeol()); 6475 } 6476 if (isalnum(c) || c == '_') { 6477 *p++ = (char)c; 6478 continue; 6479 } 6480 *p = '\0'; 6481 lungetc(c); 6482 break; 6483 } 6484 val = symget(buf); 6485 if (val == NULL) { 6486 yyerror("macro '%s' not defined", buf); 6487 return (findeol()); 6488 } 6489 parsebuf = val; 6490 parseindex = 0; 6491 goto top; 6492 } 6493 6494 switch (c) { 6495 case '\'': 6496 case '"': 6497 quotec = c; 6498 while (1) { 6499 if ((c = lgetc(quotec)) == EOF) 6500 return (0); 6501 if (c == '\n') { 6502 file->lineno++; 6503 continue; 6504 } else if (c == '\\') { 6505 if ((next = lgetc(quotec)) == EOF) 6506 return (0); 6507 if (next == quotec || c == ' ' || c == '\t') 6508 c = next; 6509 else if (next == '\n') { 6510 file->lineno++; 6511 continue; 6512 } 6513 else 6514 lungetc(next); 6515 } else if (c == quotec) { 6516 *p = '\0'; 6517 break; 6518 } 6519 if (p + 1 >= buf + sizeof(buf) - 1) { 6520 yyerror("string too long"); 6521 return (findeol()); 6522 } 6523 *p++ = (char)c; 6524 } 6525 yylval.v.string = strdup(buf); 6526 if (yylval.v.string == NULL) 6527 err(1, "yylex: strdup"); 6528 return (STRING); 6529 case '<': 6530 next = lgetc(0); 6531 if (next == '>') { 6532 yylval.v.i = PF_OP_XRG; 6533 return (PORTBINARY); 6534 } 6535 lungetc(next); 6536 break; 6537 case '>': 6538 next = lgetc(0); 6539 if (next == '<') { 6540 yylval.v.i = PF_OP_IRG; 6541 return (PORTBINARY); 6542 } 6543 lungetc(next); 6544 break; 6545 case '-': 6546 next = lgetc(0); 6547 if (next == '>') 6548 return (ARROW); 6549 lungetc(next); 6550 break; 6551 } 6552 6553 #define allowed_to_end_number(x) \ 6554 (isspace(x) || x == ')' || x ==',' || x == '/' || x == '}' || x == '=') 6555 6556 if (c == '-' || isdigit(c)) { 6557 do { 6558 *p++ = c; 6559 if ((unsigned)(p-buf) >= sizeof(buf)) { 6560 yyerror("string too long"); 6561 return (findeol()); 6562 } 6563 } while ((c = lgetc(0)) != EOF && isdigit(c)); 6564 lungetc(c); 6565 if (p == buf + 1 && buf[0] == '-') 6566 goto nodigits; 6567 if (c == EOF || allowed_to_end_number(c)) { 6568 const char *errstr = NULL; 6569 6570 *p = '\0'; 6571 yylval.v.number = strtonum(buf, LLONG_MIN, 6572 LLONG_MAX, &errstr); 6573 if (errstr) { 6574 yyerror("\"%s\" invalid number: %s", 6575 buf, errstr); 6576 return (findeol()); 6577 } 6578 return (NUMBER); 6579 } else { 6580 nodigits: 6581 while (p > buf + 1) 6582 lungetc(*--p); 6583 c = *--p; 6584 if (c == '-') 6585 return (c); 6586 } 6587 } 6588 6589 #define allowed_in_string(x) \ 6590 (isalnum(x) || (ispunct(x) && x != '(' && x != ')' && \ 6591 x != '{' && x != '}' && x != '<' && x != '>' && \ 6592 x != '!' && x != '=' && x != '/' && x != '#' && \ 6593 x != ',')) 6594 6595 if (isalnum(c) || c == ':' || c == '_') { 6596 do { 6597 *p++ = c; 6598 if ((unsigned)(p-buf) >= sizeof(buf)) { 6599 yyerror("string too long"); 6600 return (findeol()); 6601 } 6602 } while ((c = lgetc(0)) != EOF && (allowed_in_string(c))); 6603 lungetc(c); 6604 *p = '\0'; 6605 if ((token = lookup(buf)) == STRING) 6606 if ((yylval.v.string = strdup(buf)) == NULL) 6607 err(1, "yylex: strdup"); 6608 return (token); 6609 } 6610 if (c == '\n') { 6611 yylval.lineno = file->lineno; 6612 file->lineno++; 6613 } 6614 if (c == EOF) 6615 return (0); 6616 return (c); 6617 } 6618 6619 int 6620 check_file_secrecy(int fd, const char *fname) 6621 { 6622 struct stat st; 6623 6624 if (fstat(fd, &st)) { 6625 warn("cannot stat %s", fname); 6626 return (-1); 6627 } 6628 if (st.st_uid != 0 && st.st_uid != getuid()) { 6629 warnx("%s: owner not root or current user", fname); 6630 return (-1); 6631 } 6632 if (st.st_mode & (S_IRWXG | S_IRWXO)) { 6633 warnx("%s: group/world readable/writeable", fname); 6634 return (-1); 6635 } 6636 return (0); 6637 } 6638 6639 struct file * 6640 pushfile(const char *name, int secret) 6641 { 6642 struct file *nfile; 6643 6644 if ((nfile = calloc(1, sizeof(struct file))) == NULL || 6645 (nfile->name = strdup(name)) == NULL) { 6646 warn("malloc"); 6647 return (NULL); 6648 } 6649 if (TAILQ_FIRST(&files) == NULL && strcmp(nfile->name, "-") == 0) { 6650 nfile->stream = stdin; 6651 free(nfile->name); 6652 if ((nfile->name = strdup("stdin")) == NULL) { 6653 warn("strdup"); 6654 free(nfile); 6655 return (NULL); 6656 } 6657 } else if ((nfile->stream = fopen(nfile->name, "r")) == NULL) { 6658 warn("%s", nfile->name); 6659 free(nfile->name); 6660 free(nfile); 6661 return (NULL); 6662 } else if (secret && 6663 check_file_secrecy(fileno(nfile->stream), nfile->name)) { 6664 fclose(nfile->stream); 6665 free(nfile->name); 6666 free(nfile); 6667 return (NULL); 6668 } 6669 nfile->lineno = 1; 6670 TAILQ_INSERT_TAIL(&files, nfile, entry); 6671 return (nfile); 6672 } 6673 6674 int 6675 popfile(void) 6676 { 6677 struct file *prev; 6678 6679 if ((prev = TAILQ_PREV(file, files, entry)) != NULL) { 6680 prev->errors += file->errors; 6681 TAILQ_REMOVE(&files, file, entry); 6682 fclose(file->stream); 6683 free(file->name); 6684 free(file); 6685 file = prev; 6686 return (0); 6687 } 6688 return (EOF); 6689 } 6690 6691 int 6692 parse_config(char *filename, struct pfctl *xpf) 6693 { 6694 int errors = 0; 6695 struct sym *sym; 6696 6697 pf = xpf; 6698 errors = 0; 6699 rulestate = PFCTL_STATE_NONE; 6700 returnicmpdefault = (ICMP_UNREACH << 8) | ICMP_UNREACH_PORT; 6701 returnicmp6default = 6702 (ICMP6_DST_UNREACH << 8) | ICMP6_DST_UNREACH_NOPORT; 6703 blockpolicy = PFRULE_DROP; 6704 failpolicy = PFRULE_DROP; 6705 require_order = 1; 6706 6707 if ((file = pushfile(filename, 0)) == NULL) { 6708 warn("cannot open the main config file!"); 6709 return (-1); 6710 } 6711 6712 yyparse(); 6713 errors = file->errors; 6714 popfile(); 6715 6716 /* Free macros and check which have not been used. */ 6717 while ((sym = TAILQ_FIRST(&symhead))) { 6718 if ((pf->opts & PF_OPT_VERBOSE2) && !sym->used) 6719 fprintf(stderr, "warning: macro '%s' not " 6720 "used\n", sym->nam); 6721 free(sym->nam); 6722 free(sym->val); 6723 TAILQ_REMOVE(&symhead, sym, entry); 6724 free(sym); 6725 } 6726 6727 return (errors ? -1 : 0); 6728 } 6729 6730 int 6731 symset(const char *nam, const char *val, int persist) 6732 { 6733 struct sym *sym; 6734 6735 for (sym = TAILQ_FIRST(&symhead); sym && strcmp(nam, sym->nam); 6736 sym = TAILQ_NEXT(sym, entry)) 6737 ; /* nothing */ 6738 6739 if (sym != NULL) { 6740 if (sym->persist == 1) 6741 return (0); 6742 else { 6743 free(sym->nam); 6744 free(sym->val); 6745 TAILQ_REMOVE(&symhead, sym, entry); 6746 free(sym); 6747 } 6748 } 6749 if ((sym = calloc(1, sizeof(*sym))) == NULL) 6750 return (-1); 6751 6752 sym->nam = strdup(nam); 6753 if (sym->nam == NULL) { 6754 free(sym); 6755 return (-1); 6756 } 6757 sym->val = strdup(val); 6758 if (sym->val == NULL) { 6759 free(sym->nam); 6760 free(sym); 6761 return (-1); 6762 } 6763 sym->used = 0; 6764 sym->persist = persist; 6765 TAILQ_INSERT_TAIL(&symhead, sym, entry); 6766 return (0); 6767 } 6768 6769 int 6770 pfctl_cmdline_symset(char *s) 6771 { 6772 char *sym, *val; 6773 int ret; 6774 6775 if ((val = strrchr(s, '=')) == NULL) 6776 return (-1); 6777 6778 if ((sym = malloc(strlen(s) - strlen(val) + 1)) == NULL) 6779 err(1, "pfctl_cmdline_symset: malloc"); 6780 6781 strlcpy(sym, s, strlen(s) - strlen(val) + 1); 6782 6783 ret = symset(sym, val + 1, 1); 6784 free(sym); 6785 6786 return (ret); 6787 } 6788 6789 char * 6790 symget(const char *nam) 6791 { 6792 struct sym *sym; 6793 6794 TAILQ_FOREACH(sym, &symhead, entry) 6795 if (strcmp(nam, sym->nam) == 0) { 6796 sym->used = 1; 6797 return (sym->val); 6798 } 6799 return (NULL); 6800 } 6801 6802 void 6803 mv_rules(struct pfctl_ruleset *src, struct pfctl_ruleset *dst) 6804 { 6805 int i; 6806 struct pfctl_rule *r; 6807 6808 for (i = 0; i < PF_RULESET_MAX; ++i) { 6809 while ((r = TAILQ_FIRST(src->rules[i].active.ptr)) 6810 != NULL) { 6811 TAILQ_REMOVE(src->rules[i].active.ptr, r, entries); 6812 TAILQ_INSERT_TAIL(dst->rules[i].active.ptr, r, entries); 6813 dst->anchor->match++; 6814 } 6815 src->anchor->match = 0; 6816 while ((r = TAILQ_FIRST(src->rules[i].inactive.ptr)) 6817 != NULL) { 6818 TAILQ_REMOVE(src->rules[i].inactive.ptr, r, entries); 6819 TAILQ_INSERT_TAIL(dst->rules[i].inactive.ptr, 6820 r, entries); 6821 } 6822 } 6823 } 6824 6825 void 6826 mv_eth_rules(struct pfctl_eth_ruleset *src, struct pfctl_eth_ruleset *dst) 6827 { 6828 struct pfctl_eth_rule *r; 6829 6830 while ((r = TAILQ_FIRST(&src->rules)) != NULL) { 6831 TAILQ_REMOVE(&src->rules, r, entries); 6832 TAILQ_INSERT_TAIL(&dst->rules, r, entries); 6833 dst->anchor->match++; 6834 } 6835 src->anchor->match = 0; 6836 } 6837 6838 void 6839 decide_address_family(struct node_host *n, sa_family_t *af) 6840 { 6841 if (*af != 0 || n == NULL) 6842 return; 6843 *af = n->af; 6844 while ((n = n->next) != NULL) { 6845 if (n->af != *af) { 6846 *af = 0; 6847 return; 6848 } 6849 } 6850 } 6851 6852 void 6853 remove_invalid_hosts(struct node_host **nh, sa_family_t *af) 6854 { 6855 struct node_host *n = *nh, *prev = NULL; 6856 6857 while (n != NULL) { 6858 if (*af && n->af && n->af != *af) { 6859 /* unlink and free n */ 6860 struct node_host *next = n->next; 6861 6862 /* adjust tail pointer */ 6863 if (n == (*nh)->tail) 6864 (*nh)->tail = prev; 6865 /* adjust previous node's next pointer */ 6866 if (prev == NULL) 6867 *nh = next; 6868 else 6869 prev->next = next; 6870 /* free node */ 6871 if (n->ifname != NULL) 6872 free(n->ifname); 6873 free(n); 6874 n = next; 6875 } else { 6876 if (n->af && !*af) 6877 *af = n->af; 6878 prev = n; 6879 n = n->next; 6880 } 6881 } 6882 } 6883 6884 int 6885 invalid_redirect(struct node_host *nh, sa_family_t af) 6886 { 6887 if (!af) { 6888 struct node_host *n; 6889 6890 /* tables and dyniftl are ok without an address family */ 6891 for (n = nh; n != NULL; n = n->next) { 6892 if (n->addr.type != PF_ADDR_TABLE && 6893 n->addr.type != PF_ADDR_DYNIFTL) { 6894 yyerror("address family not given and " 6895 "translation address expands to multiple " 6896 "address families"); 6897 return (1); 6898 } 6899 } 6900 } 6901 if (nh == NULL) { 6902 yyerror("no translation address with matching address family " 6903 "found."); 6904 return (1); 6905 } 6906 return (0); 6907 } 6908 6909 int 6910 atoul(char *s, u_long *ulvalp) 6911 { 6912 u_long ulval; 6913 char *ep; 6914 6915 errno = 0; 6916 ulval = strtoul(s, &ep, 0); 6917 if (s[0] == '\0' || *ep != '\0') 6918 return (-1); 6919 if (errno == ERANGE && ulval == ULONG_MAX) 6920 return (-1); 6921 *ulvalp = ulval; 6922 return (0); 6923 } 6924 6925 int 6926 getservice(char *n) 6927 { 6928 struct servent *s; 6929 u_long ulval; 6930 6931 if (atoul(n, &ulval) == 0) { 6932 if (ulval > 65535) { 6933 yyerror("illegal port value %lu", ulval); 6934 return (-1); 6935 } 6936 return (htons(ulval)); 6937 } else { 6938 s = getservbyname(n, "tcp"); 6939 if (s == NULL) 6940 s = getservbyname(n, "udp"); 6941 if (s == NULL) 6942 s = getservbyname(n, "sctp"); 6943 if (s == NULL) { 6944 yyerror("unknown port %s", n); 6945 return (-1); 6946 } 6947 return (s->s_port); 6948 } 6949 } 6950 6951 int 6952 rule_label(struct pfctl_rule *r, char *s[PF_RULE_MAX_LABEL_COUNT]) 6953 { 6954 for (int i = 0; i < PF_RULE_MAX_LABEL_COUNT; i++) { 6955 if (s[i] == NULL) 6956 return (0); 6957 6958 if (strlcpy(r->label[i], s[i], sizeof(r->label[0])) >= 6959 sizeof(r->label[0])) { 6960 yyerror("rule label too long (max %d chars)", 6961 sizeof(r->label[0])-1); 6962 return (-1); 6963 } 6964 } 6965 return (0); 6966 } 6967 6968 int 6969 eth_rule_label(struct pfctl_eth_rule *r, char *s[PF_RULE_MAX_LABEL_COUNT]) 6970 { 6971 for (int i = 0; i < PF_RULE_MAX_LABEL_COUNT; i++) { 6972 if (s[i] == NULL) 6973 return (0); 6974 6975 if (strlcpy(r->label[i], s[i], sizeof(r->label[0])) >= 6976 sizeof(r->label[0])) { 6977 yyerror("rule label too long (max %d chars)", 6978 sizeof(r->label[0])-1); 6979 return (-1); 6980 } 6981 } 6982 return (0); 6983 } 6984 6985 u_int16_t 6986 parseicmpspec(char *w, sa_family_t af) 6987 { 6988 const struct icmpcodeent *p; 6989 u_long ulval; 6990 u_int8_t icmptype; 6991 6992 if (af == AF_INET) 6993 icmptype = returnicmpdefault >> 8; 6994 else 6995 icmptype = returnicmp6default >> 8; 6996 6997 if (atoul(w, &ulval) == -1) { 6998 if ((p = geticmpcodebyname(icmptype, w, af)) == NULL) { 6999 yyerror("unknown icmp code %s", w); 7000 return (0); 7001 } 7002 ulval = p->code; 7003 } 7004 if (ulval > 255) { 7005 yyerror("invalid icmp code %lu", ulval); 7006 return (0); 7007 } 7008 return (icmptype << 8 | ulval); 7009 } 7010 7011 int 7012 parseport(char *port, struct range *r, int extensions) 7013 { 7014 char *p = strchr(port, ':'); 7015 7016 if (p == NULL) { 7017 if ((r->a = getservice(port)) == -1) 7018 return (-1); 7019 r->b = 0; 7020 r->t = PF_OP_NONE; 7021 return (0); 7022 } 7023 if ((extensions & PPORT_STAR) && !strcmp(p+1, "*")) { 7024 *p = 0; 7025 if ((r->a = getservice(port)) == -1) 7026 return (-1); 7027 r->b = 0; 7028 r->t = PF_OP_IRG; 7029 return (0); 7030 } 7031 if ((extensions & PPORT_RANGE)) { 7032 *p++ = 0; 7033 if ((r->a = getservice(port)) == -1 || 7034 (r->b = getservice(p)) == -1) 7035 return (-1); 7036 if (r->a == r->b) { 7037 r->b = 0; 7038 r->t = PF_OP_NONE; 7039 } else 7040 r->t = PF_OP_RRG; 7041 return (0); 7042 } 7043 return (-1); 7044 } 7045 7046 int 7047 pfctl_load_anchors(int dev, struct pfctl *pf, struct pfr_buffer *trans) 7048 { 7049 struct loadanchors *la; 7050 7051 TAILQ_FOREACH(la, &loadanchorshead, entries) { 7052 if (pf->opts & PF_OPT_VERBOSE) 7053 fprintf(stderr, "\nLoading anchor %s from %s\n", 7054 la->anchorname, la->filename); 7055 if (pfctl_rules(dev, la->filename, pf->opts, pf->optimize, 7056 la->anchorname, trans) == -1) 7057 return (-1); 7058 } 7059 7060 return (0); 7061 } 7062 7063 int 7064 kw_casecmp(const void *k, const void *e) 7065 { 7066 return (strcasecmp(k, ((const struct keywords *)e)->k_name)); 7067 } 7068 7069 int 7070 map_tos(char *s, int *val) 7071 { 7072 /* DiffServ Codepoints and other TOS mappings */ 7073 const struct keywords toswords[] = { 7074 { "af11", IPTOS_DSCP_AF11 }, 7075 { "af12", IPTOS_DSCP_AF12 }, 7076 { "af13", IPTOS_DSCP_AF13 }, 7077 { "af21", IPTOS_DSCP_AF21 }, 7078 { "af22", IPTOS_DSCP_AF22 }, 7079 { "af23", IPTOS_DSCP_AF23 }, 7080 { "af31", IPTOS_DSCP_AF31 }, 7081 { "af32", IPTOS_DSCP_AF32 }, 7082 { "af33", IPTOS_DSCP_AF33 }, 7083 { "af41", IPTOS_DSCP_AF41 }, 7084 { "af42", IPTOS_DSCP_AF42 }, 7085 { "af43", IPTOS_DSCP_AF43 }, 7086 { "critical", IPTOS_PREC_CRITIC_ECP }, 7087 { "cs0", IPTOS_DSCP_CS0 }, 7088 { "cs1", IPTOS_DSCP_CS1 }, 7089 { "cs2", IPTOS_DSCP_CS2 }, 7090 { "cs3", IPTOS_DSCP_CS3 }, 7091 { "cs4", IPTOS_DSCP_CS4 }, 7092 { "cs5", IPTOS_DSCP_CS5 }, 7093 { "cs6", IPTOS_DSCP_CS6 }, 7094 { "cs7", IPTOS_DSCP_CS7 }, 7095 { "ef", IPTOS_DSCP_EF }, 7096 { "inetcontrol", IPTOS_PREC_INTERNETCONTROL }, 7097 { "lowdelay", IPTOS_LOWDELAY }, 7098 { "netcontrol", IPTOS_PREC_NETCONTROL }, 7099 { "reliability", IPTOS_RELIABILITY }, 7100 { "throughput", IPTOS_THROUGHPUT }, 7101 { "va", IPTOS_DSCP_VA } 7102 }; 7103 const struct keywords *p; 7104 7105 p = bsearch(s, toswords, sizeof(toswords)/sizeof(toswords[0]), 7106 sizeof(toswords[0]), kw_casecmp); 7107 7108 if (p) { 7109 *val = p->k_val; 7110 return (1); 7111 } 7112 return (0); 7113 } 7114 7115 int 7116 rt_tableid_max(void) 7117 { 7118 #ifdef __FreeBSD__ 7119 int fibs; 7120 size_t l = sizeof(fibs); 7121 7122 if (sysctlbyname("net.fibs", &fibs, &l, NULL, 0) == -1) 7123 fibs = 16; /* XXX RT_MAXFIBS, at least limit it some. */ 7124 /* 7125 * As the OpenBSD code only compares > and not >= we need to adjust 7126 * here given we only accept values of 0..n and want to avoid #ifdefs 7127 * in the grammar. 7128 */ 7129 return (fibs - 1); 7130 #else 7131 return (RT_TABLEID_MAX); 7132 #endif 7133 } 7134 7135 struct node_mac* 7136 node_mac_from_string(const char *str) 7137 { 7138 struct node_mac *m; 7139 7140 m = calloc(1, sizeof(struct node_mac)); 7141 if (m == NULL) 7142 err(1, "mac: calloc"); 7143 7144 if (sscanf(str, "%02hhx:%02hhx:%02hhx:%02hhx:%02hhx:%02hhx", 7145 &m->mac[0], &m->mac[1], &m->mac[2], &m->mac[3], &m->mac[4], 7146 &m->mac[5]) != 6) { 7147 free(m); 7148 yyerror("invalid MAC address"); 7149 return (NULL); 7150 } 7151 7152 memset(m->mask, 0xff, ETHER_ADDR_LEN); 7153 m->isset = true; 7154 m->next = NULL; 7155 m->tail = m; 7156 7157 return (m); 7158 } 7159 7160 struct node_mac* 7161 node_mac_from_string_masklen(const char *str, int masklen) 7162 { 7163 struct node_mac *m; 7164 7165 if (masklen < 0 || masklen > (ETHER_ADDR_LEN * 8)) { 7166 yyerror("invalid MAC mask length"); 7167 return (NULL); 7168 } 7169 7170 m = node_mac_from_string(str); 7171 if (m == NULL) 7172 return (NULL); 7173 7174 memset(m->mask, 0, ETHER_ADDR_LEN); 7175 for (int i = 0; i < masklen; i++) 7176 m->mask[i / 8] |= 1 << (i % 8); 7177 7178 return (m); 7179 } 7180 7181 struct node_mac* 7182 node_mac_from_string_mask(const char *str, const char *mask) 7183 { 7184 struct node_mac *m; 7185 7186 m = node_mac_from_string(str); 7187 if (m == NULL) 7188 return (NULL); 7189 7190 if (sscanf(mask, "%02hhx:%02hhx:%02hhx:%02hhx:%02hhx:%02hhx", 7191 &m->mask[0], &m->mask[1], &m->mask[2], &m->mask[3], &m->mask[4], 7192 &m->mask[5]) != 6) { 7193 free(m); 7194 yyerror("invalid MAC mask"); 7195 return (NULL); 7196 } 7197 7198 return (m); 7199 } 7200