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 #define PFIOC_USE_LATEST 34 35 #include <sys/types.h> 36 #include <sys/socket.h> 37 #include <sys/stat.h> 38 #ifdef __FreeBSD__ 39 #include <sys/sysctl.h> 40 #endif 41 #include <net/if.h> 42 #include <netinet/in.h> 43 #include <netinet/in_systm.h> 44 #include <netinet/ip.h> 45 #include <netinet/ip_icmp.h> 46 #include <netinet/icmp6.h> 47 #include <net/pfvar.h> 48 #include <arpa/inet.h> 49 #include <net/altq/altq.h> 50 #include <net/altq/altq_cbq.h> 51 #include <net/altq/altq_codel.h> 52 #include <net/altq/altq_priq.h> 53 #include <net/altq/altq_hfsc.h> 54 #include <net/altq/altq_fairq.h> 55 56 #include <assert.h> 57 #include <stdio.h> 58 #include <unistd.h> 59 #include <stdlib.h> 60 #include <netdb.h> 61 #include <stdarg.h> 62 #include <errno.h> 63 #include <string.h> 64 #include <ctype.h> 65 #include <math.h> 66 #include <err.h> 67 #include <limits.h> 68 #include <pwd.h> 69 #include <grp.h> 70 #include <md5.h> 71 72 #include "pfctl_parser.h" 73 #include "pfctl.h" 74 75 static struct pfctl *pf = NULL; 76 static int debug = 0; 77 static int rulestate = 0; 78 static u_int16_t returnicmpdefault = 79 (ICMP_UNREACH << 8) | ICMP_UNREACH_PORT; 80 static u_int16_t returnicmp6default = 81 (ICMP6_DST_UNREACH << 8) | ICMP6_DST_UNREACH_NOPORT; 82 static int blockpolicy = PFRULE_DROP; 83 static int failpolicy = PFRULE_DROP; 84 static int require_order = 1; 85 static int default_statelock; 86 87 static TAILQ_HEAD(files, file) files = TAILQ_HEAD_INITIALIZER(files); 88 static struct file { 89 TAILQ_ENTRY(file) entry; 90 FILE *stream; 91 char *name; 92 size_t ungetpos; 93 size_t ungetsize; 94 u_char *ungetbuf; 95 int eof_reached; 96 int lineno; 97 int errors; 98 } *file; 99 struct file *pushfile(const char *, int); 100 int popfile(void); 101 int check_file_secrecy(int, const char *); 102 int yyparse(void); 103 int yylex(void); 104 int yyerror(const char *, ...); 105 int kw_cmp(const void *, const void *); 106 int lookup(char *); 107 int igetc(void); 108 int lgetc(int); 109 void lungetc(int); 110 int findeol(void); 111 112 static TAILQ_HEAD(symhead, sym) symhead = TAILQ_HEAD_INITIALIZER(symhead); 113 struct sym { 114 TAILQ_ENTRY(sym) entry; 115 int used; 116 int persist; 117 char *nam; 118 char *val; 119 }; 120 int symset(const char *, const char *, int); 121 char *symget(const char *); 122 123 int atoul(char *, u_long *); 124 125 enum { 126 PFCTL_STATE_NONE, 127 PFCTL_STATE_OPTION, 128 PFCTL_STATE_ETHER, 129 PFCTL_STATE_SCRUB, 130 PFCTL_STATE_QUEUE, 131 PFCTL_STATE_NAT, 132 PFCTL_STATE_FILTER 133 }; 134 135 struct node_etherproto { 136 u_int16_t proto; 137 struct node_etherproto *next; 138 struct node_etherproto *tail; 139 }; 140 141 struct node_proto { 142 u_int8_t proto; 143 struct node_proto *next; 144 struct node_proto *tail; 145 }; 146 147 struct node_port { 148 u_int16_t port[2]; 149 u_int8_t op; 150 struct node_port *next; 151 struct node_port *tail; 152 }; 153 154 struct node_uid { 155 uid_t uid[2]; 156 u_int8_t op; 157 struct node_uid *next; 158 struct node_uid *tail; 159 }; 160 161 struct node_gid { 162 gid_t gid[2]; 163 u_int8_t op; 164 struct node_gid *next; 165 struct node_gid *tail; 166 }; 167 168 struct node_icmp { 169 u_int8_t code; 170 u_int8_t type; 171 u_int8_t proto; 172 struct node_icmp *next; 173 struct node_icmp *tail; 174 }; 175 176 enum { PF_STATE_OPT_MAX, PF_STATE_OPT_NOSYNC, PF_STATE_OPT_SRCTRACK, 177 PF_STATE_OPT_MAX_SRC_STATES, PF_STATE_OPT_MAX_SRC_CONN, 178 PF_STATE_OPT_MAX_SRC_CONN_RATE, PF_STATE_OPT_MAX_SRC_NODES, 179 PF_STATE_OPT_OVERLOAD, PF_STATE_OPT_STATELOCK, 180 PF_STATE_OPT_TIMEOUT, PF_STATE_OPT_SLOPPY, 181 PF_STATE_OPT_PFLOW, PF_STATE_OPT_ALLOW_RELATED }; 182 183 enum { PF_SRCTRACK_NONE, PF_SRCTRACK, PF_SRCTRACK_GLOBAL, PF_SRCTRACK_RULE }; 184 185 struct node_state_opt { 186 int type; 187 union { 188 u_int32_t max_states; 189 u_int32_t max_src_states; 190 u_int32_t max_src_conn; 191 struct { 192 u_int32_t limit; 193 u_int32_t seconds; 194 } max_src_conn_rate; 195 struct { 196 u_int8_t flush; 197 char tblname[PF_TABLE_NAME_SIZE]; 198 } overload; 199 u_int32_t max_src_nodes; 200 u_int8_t src_track; 201 u_int32_t statelock; 202 struct { 203 int number; 204 u_int32_t seconds; 205 } timeout; 206 } data; 207 struct node_state_opt *next; 208 struct node_state_opt *tail; 209 }; 210 211 struct peer { 212 struct node_host *host; 213 struct node_port *port; 214 }; 215 216 static struct node_queue { 217 char queue[PF_QNAME_SIZE]; 218 char parent[PF_QNAME_SIZE]; 219 char ifname[IFNAMSIZ]; 220 int scheduler; 221 struct node_queue *next; 222 struct node_queue *tail; 223 } *queues = NULL; 224 225 struct node_qassign { 226 char *qname; 227 char *pqname; 228 }; 229 230 struct range { 231 int a; 232 int b; 233 int t; 234 }; 235 236 static struct pool_opts { 237 int marker; 238 #define POM_TYPE 0x01 239 #define POM_STICKYADDRESS 0x02 240 #define POM_ENDPI 0x04 241 u_int8_t opts; 242 int type; 243 int staticport; 244 struct pf_poolhashkey *key; 245 struct pf_mape_portset mape; 246 } pool_opts; 247 248 struct redirspec { 249 struct node_host *host; 250 struct range rport; 251 struct pool_opts pool_opts; 252 int af; 253 bool binat; 254 }; 255 256 static struct filter_opts { 257 int marker; 258 #define FOM_FLAGS 0x0001 259 #define FOM_ICMP 0x0002 260 #define FOM_TOS 0x0004 261 #define FOM_KEEP 0x0008 262 #define FOM_SRCTRACK 0x0010 263 #define FOM_MINTTL 0x0020 264 #define FOM_MAXMSS 0x0040 265 #define FOM_AFTO 0x0080 266 #define FOM_SETTOS 0x0100 267 #define FOM_SCRUB_TCP 0x0200 268 #define FOM_SETPRIO 0x0400 269 #define FOM_ONCE 0x1000 /* not yet implemmented */ 270 #define FOM_PRIO 0x2000 271 #define FOM_SETDELAY 0x4000 272 #define FOM_FRAGCACHE 0x8000 /* does not exist in OpenBSD */ 273 struct node_uid *uid; 274 struct node_gid *gid; 275 struct node_if *rcv; 276 struct { 277 u_int8_t b1; 278 u_int8_t b2; 279 u_int16_t w; 280 u_int16_t w2; 281 } flags; 282 struct node_icmp *icmpspec; 283 u_int32_t tos; 284 u_int32_t prob; 285 u_int32_t ridentifier; 286 struct { 287 int action; 288 struct node_state_opt *options; 289 } keep; 290 int fragment; 291 int allowopts; 292 char *label[PF_RULE_MAX_LABEL_COUNT]; 293 int labelcount; 294 struct node_qassign queues; 295 char *tag; 296 char *match_tag; 297 u_int8_t match_tag_not; 298 u_int16_t dnpipe; 299 u_int16_t dnrpipe; 300 u_int32_t free_flags; 301 u_int rtableid; 302 u_int8_t prio; 303 u_int8_t set_prio[2]; 304 struct { 305 struct node_host *addr; 306 u_int16_t port; 307 } divert; 308 struct redirspec *nat; 309 struct redirspec *rdr; 310 /* new-style scrub opts */ 311 int nodf; 312 int minttl; 313 int settos; 314 int randomid; 315 int max_mss; 316 struct { 317 uint32_t limit; 318 uint32_t seconds; 319 } pktrate; 320 int max_pkt_size; 321 } filter_opts; 322 323 static struct antispoof_opts { 324 char *label[PF_RULE_MAX_LABEL_COUNT]; 325 int labelcount; 326 u_int32_t ridentifier; 327 u_int rtableid; 328 } antispoof_opts; 329 330 static struct scrub_opts { 331 int marker; 332 int nodf; 333 int minttl; 334 int maxmss; 335 int settos; 336 int fragcache; 337 int randomid; 338 int reassemble_tcp; 339 char *match_tag; 340 u_int8_t match_tag_not; 341 u_int rtableid; 342 } scrub_opts; 343 344 static struct queue_opts { 345 int marker; 346 #define QOM_BWSPEC 0x01 347 #define QOM_SCHEDULER 0x02 348 #define QOM_PRIORITY 0x04 349 #define QOM_TBRSIZE 0x08 350 #define QOM_QLIMIT 0x10 351 struct node_queue_bw queue_bwspec; 352 struct node_queue_opt scheduler; 353 int priority; 354 unsigned int tbrsize; 355 int qlimit; 356 } queue_opts; 357 358 static struct table_opts { 359 int flags; 360 int init_addr; 361 struct node_tinithead init_nodes; 362 } table_opts; 363 364 static struct codel_opts codel_opts; 365 static struct node_hfsc_opts hfsc_opts; 366 static struct node_fairq_opts fairq_opts; 367 static struct node_state_opt *keep_state_defaults = NULL; 368 static struct pfctl_watermarks syncookie_opts; 369 370 int disallow_table(struct node_host *, const char *); 371 int disallow_urpf_failed(struct node_host *, const char *); 372 int disallow_alias(struct node_host *, const char *); 373 int rule_consistent(struct pfctl_rule *, int); 374 int filter_consistent(struct pfctl_rule *, int); 375 int nat_consistent(struct pfctl_rule *); 376 int rdr_consistent(struct pfctl_rule *); 377 int process_tabledef(char *, struct table_opts *, int); 378 void expand_label_str(char *, size_t, const char *, const char *); 379 void expand_label_if(const char *, char *, size_t, const char *); 380 void expand_label_addr(const char *, char *, size_t, sa_family_t, 381 struct pf_rule_addr *); 382 void expand_label_port(const char *, char *, size_t, 383 struct pf_rule_addr *); 384 void expand_label_proto(const char *, char *, size_t, u_int8_t); 385 void expand_label_nr(const char *, char *, size_t, 386 struct pfctl_rule *); 387 void expand_eth_rule(struct pfctl_eth_rule *, 388 struct node_if *, struct node_etherproto *, 389 struct node_mac *, struct node_mac *, 390 struct node_host *, struct node_host *, const char *, 391 const char *); 392 int apply_rdr_ports(struct pfctl_rule *r, struct pfctl_pool *, struct redirspec *); 393 int apply_nat_ports(struct pfctl_pool *, struct redirspec *); 394 int apply_redirspec(struct pfctl_pool *, struct redirspec *); 395 int check_binat_redirspec(struct node_host *, struct pfctl_rule *, int); 396 void add_binat_rdr_rule(struct pfctl_rule *, struct redirspec *, 397 struct node_host *, struct pfctl_rule *, struct redirspec **, 398 struct node_host **); 399 void expand_rule(struct pfctl_rule *, bool, struct node_if *, 400 struct redirspec *, struct redirspec *, struct redirspec *, 401 struct node_proto *, struct node_os *, struct node_host *, 402 struct node_port *, struct node_host *, struct node_port *, 403 struct node_uid *, struct node_gid *, struct node_if *, 404 struct node_icmp *, const char *); 405 int expand_altq(struct pf_altq *, struct node_if *, 406 struct node_queue *, struct node_queue_bw bwspec, 407 struct node_queue_opt *); 408 int expand_queue(struct pf_altq *, struct node_if *, 409 struct node_queue *, struct node_queue_bw, 410 struct node_queue_opt *); 411 int expand_skip_interface(struct node_if *); 412 413 int check_rulestate(int); 414 int getservice(char *); 415 int rule_label(struct pfctl_rule *, char *s[PF_RULE_MAX_LABEL_COUNT]); 416 int eth_rule_label(struct pfctl_eth_rule *, char *s[PF_RULE_MAX_LABEL_COUNT]); 417 int rt_tableid_max(void); 418 419 void mv_rules(struct pfctl_ruleset *, struct pfctl_ruleset *); 420 void mv_eth_rules(struct pfctl_eth_ruleset *, struct pfctl_eth_ruleset *); 421 void decide_address_family(struct node_host *, sa_family_t *); 422 void remove_invalid_hosts(struct node_host **, sa_family_t *); 423 int invalid_redirect(struct node_host *, sa_family_t); 424 u_int16_t parseicmpspec(char *, sa_family_t); 425 int kw_casecmp(const void *, const void *); 426 int map_tos(char *string, int *); 427 int filteropts_to_rule(struct pfctl_rule *, struct filter_opts *); 428 struct node_mac* node_mac_from_string(const char *); 429 struct node_mac* node_mac_from_string_masklen(const char *, int); 430 struct node_mac* node_mac_from_string_mask(const char *, const char *); 431 432 static TAILQ_HEAD(loadanchorshead, loadanchors) 433 loadanchorshead = TAILQ_HEAD_INITIALIZER(loadanchorshead); 434 435 struct loadanchors { 436 TAILQ_ENTRY(loadanchors) entries; 437 char *anchorname; 438 char *filename; 439 }; 440 441 typedef struct { 442 union { 443 int64_t number; 444 double probability; 445 int i; 446 char *string; 447 u_int rtableid; 448 struct { 449 u_int8_t b1; 450 u_int8_t b2; 451 u_int16_t w; 452 u_int16_t w2; 453 } b; 454 struct range range; 455 struct node_if *interface; 456 struct node_proto *proto; 457 struct node_etherproto *etherproto; 458 struct node_icmp *icmp; 459 struct node_host *host; 460 struct node_os *os; 461 struct node_port *port; 462 struct node_uid *uid; 463 struct node_gid *gid; 464 struct node_state_opt *state_opt; 465 struct peer peer; 466 struct { 467 struct peer src, dst; 468 struct node_os *src_os; 469 } fromto; 470 struct { 471 struct node_mac *src; 472 struct node_mac *dst; 473 } etherfromto; 474 struct node_mac *mac; 475 struct { 476 struct node_mac *mac; 477 } etheraddr; 478 char *bridge_to; 479 struct { 480 struct redirspec *redirspec; 481 u_int8_t rt; 482 } route; 483 struct redirspec *redirspec; 484 struct { 485 int action; 486 struct node_state_opt *options; 487 } keep_state; 488 struct { 489 u_int8_t log; 490 u_int8_t logif; 491 u_int8_t quick; 492 } logquick; 493 struct { 494 int neg; 495 char *name; 496 } tagged; 497 struct pf_poolhashkey *hashkey; 498 struct node_queue *queue; 499 struct node_queue_opt queue_options; 500 struct node_queue_bw queue_bwspec; 501 struct node_qassign qassign; 502 struct filter_opts filter_opts; 503 struct antispoof_opts antispoof_opts; 504 struct queue_opts queue_opts; 505 struct scrub_opts scrub_opts; 506 struct table_opts table_opts; 507 struct pool_opts pool_opts; 508 struct node_hfsc_opts hfsc_opts; 509 struct node_fairq_opts fairq_opts; 510 struct codel_opts codel_opts; 511 struct pfctl_watermarks *watermarks; 512 } v; 513 int lineno; 514 } YYSTYPE; 515 516 #define PPORT_RANGE 1 517 #define PPORT_STAR 2 518 int parseport(char *, struct range *r, int); 519 520 #define DYNIF_MULTIADDR(addr) ((addr).type == PF_ADDR_DYNIFTL && \ 521 (!((addr).iflags & PFI_AFLAG_NOALIAS) || \ 522 !isdigit((addr).v.ifname[strlen((addr).v.ifname)-1]))) 523 524 %} 525 526 %token PASS BLOCK MATCH SCRUB RETURN IN OS OUT LOG QUICK ON FROM TO FLAGS 527 %token RETURNRST RETURNICMP RETURNICMP6 PROTO INET INET6 ALL ANY ICMPTYPE 528 %token ICMP6TYPE CODE KEEP MODULATE STATE PORT RDR NAT BINAT ARROW NODF 529 %token MINTTL ERROR ALLOWOPTS FASTROUTE FILENAME ROUTETO DUPTO REPLYTO NO LABEL 530 %token NOROUTE URPFFAILED FRAGMENT USER GROUP MAXMSS MAXIMUM TTL TOS DROP TABLE 531 %token REASSEMBLE ANCHOR NATANCHOR RDRANCHOR BINATANCHOR 532 %token SET OPTIMIZATION TIMEOUT LIMIT LOGINTERFACE BLOCKPOLICY FAILPOLICY 533 %token RANDOMID REQUIREORDER SYNPROXY FINGERPRINTS NOSYNC DEBUG SKIP HOSTID 534 %token ANTISPOOF FOR INCLUDE KEEPCOUNTERS SYNCOOKIES L3 MATCHES 535 %token ETHER 536 %token BITMASK RANDOM SOURCEHASH ROUNDROBIN STATICPORT PROBABILITY MAPEPORTSET 537 %token ALTQ CBQ CODEL PRIQ HFSC FAIRQ BANDWIDTH TBRSIZE LINKSHARE REALTIME 538 %token UPPERLIMIT QUEUE PRIORITY QLIMIT HOGS BUCKETS RTABLE TARGET INTERVAL 539 %token DNPIPE DNQUEUE RIDENTIFIER 540 %token LOAD RULESET_OPTIMIZATION PRIO 541 %token STICKYADDRESS ENDPI MAXSRCSTATES MAXSRCNODES SOURCETRACK GLOBAL RULE 542 %token MAXSRCCONN MAXSRCCONNRATE OVERLOAD FLUSH SLOPPY PFLOW ALLOW_RELATED 543 %token TAGGED TAG IFBOUND FLOATING STATEPOLICY STATEDEFAULTS ROUTE SETTOS 544 %token DIVERTTO DIVERTREPLY BRIDGE_TO RECEIVEDON NE LE GE AFTO NATTO RDRTO 545 %token BINATTO MAXPKTRATE MAXPKTSIZE 546 %token <v.string> STRING 547 %token <v.number> NUMBER 548 %token <v.i> PORTBINARY 549 %type <v.interface> interface if_list if_item_not if_item 550 %type <v.number> number icmptype icmp6type uid gid 551 %type <v.number> tos not yesno optnodf 552 %type <v.probability> probability 553 %type <v.i> no dir af fragcache optimizer syncookie_val 554 %type <v.i> sourcetrack flush unaryop statelock 555 %type <v.i> etherprotoval 556 %type <v.b> action nataction natpasslog scrubaction 557 %type <v.b> flags flag blockspec prio 558 %type <v.range> portplain portstar portrange 559 %type <v.hashkey> hashkey 560 %type <v.proto> proto proto_list proto_item 561 %type <v.number> protoval 562 %type <v.icmp> icmpspec 563 %type <v.icmp> icmp_list icmp_item 564 %type <v.icmp> icmp6_list icmp6_item 565 %type <v.number> reticmpspec reticmp6spec 566 %type <v.fromto> fromto l3fromto 567 %type <v.peer> ipportspec from to 568 %type <v.host> ipspec toipspec xhost host dynaddr host_list 569 %type <v.host> redir_host redir_host_list routespec 570 %type <v.host> route_host route_host_list 571 %type <v.os> os xos os_list 572 %type <v.port> portspec port_list port_item 573 %type <v.uid> uids uid_list uid_item 574 %type <v.gid> gids gid_list gid_item 575 %type <v.route> route 576 %type <v.redirspec> no_port_redirspec port_redirspec route_redirspec 577 %type <v.redirspec> binat_redirspec nat_redirspec 578 %type <v.string> label stringall tag anchorname 579 %type <v.string> string varstring numberstring 580 %type <v.keep_state> keep 581 %type <v.state_opt> state_opt_spec state_opt_list state_opt_item 582 %type <v.logquick> logquick quick log logopts logopt 583 %type <v.interface> antispoof_ifspc antispoof_iflst antispoof_if 584 %type <v.qassign> qname etherqname 585 %type <v.queue> qassign qassign_list qassign_item 586 %type <v.queue_options> scheduler 587 %type <v.number> cbqflags_list cbqflags_item 588 %type <v.number> priqflags_list priqflags_item 589 %type <v.hfsc_opts> hfscopts_list hfscopts_item hfsc_opts 590 %type <v.fairq_opts> fairqopts_list fairqopts_item fairq_opts 591 %type <v.codel_opts> codelopts_list codelopts_item codel_opts 592 %type <v.queue_bwspec> bandwidth 593 %type <v.filter_opts> filter_opts filter_opt filter_opts_l etherfilter_opts etherfilter_opt etherfilter_opts_l 594 %type <v.filter_opts> filter_sets filter_set filter_sets_l 595 %type <v.antispoof_opts> antispoof_opts antispoof_opt antispoof_opts_l 596 %type <v.queue_opts> queue_opts queue_opt queue_opts_l 597 %type <v.scrub_opts> scrub_opts scrub_opt scrub_opts_l 598 %type <v.table_opts> table_opts table_opt table_opts_l 599 %type <v.pool_opts> pool_opts pool_opt pool_opts_l 600 %type <v.tagged> tagged 601 %type <v.rtableid> rtable 602 %type <v.watermarks> syncookie_opts 603 %type <v.etherproto> etherproto etherproto_list etherproto_item 604 %type <v.etherfromto> etherfromto 605 %type <v.etheraddr> etherfrom etherto 606 %type <v.bridge_to> bridge 607 %type <v.mac> xmac mac mac_list macspec 608 %% 609 610 ruleset : /* empty */ 611 | ruleset include '\n' 612 | ruleset '\n' 613 | ruleset option '\n' 614 | ruleset etherrule '\n' 615 | ruleset etheranchorrule '\n' 616 | ruleset scrubrule '\n' 617 | ruleset natrule '\n' 618 | ruleset binatrule '\n' 619 | ruleset pfrule '\n' 620 | ruleset anchorrule '\n' 621 | ruleset loadrule '\n' 622 | ruleset altqif '\n' 623 | ruleset queuespec '\n' 624 | ruleset varset '\n' 625 | ruleset antispoof '\n' 626 | ruleset tabledef '\n' 627 | '{' fakeanchor '}' '\n'; 628 | ruleset error '\n' { file->errors++; } 629 ; 630 631 include : INCLUDE STRING { 632 struct file *nfile; 633 634 if ((nfile = pushfile($2, 0)) == NULL) { 635 yyerror("failed to include file %s", $2); 636 free($2); 637 YYERROR; 638 } 639 free($2); 640 641 file = nfile; 642 lungetc('\n'); 643 } 644 ; 645 646 /* 647 * apply to previouslys specified rule: must be careful to note 648 * what that is: pf or nat or binat or rdr 649 */ 650 fakeanchor : fakeanchor '\n' 651 | fakeanchor anchorrule '\n' 652 | fakeanchor binatrule '\n' 653 | fakeanchor natrule '\n' 654 | fakeanchor pfrule '\n' 655 | fakeanchor error '\n' 656 ; 657 658 optimizer : string { 659 if (!strcmp($1, "none")) 660 $$ = 0; 661 else if (!strcmp($1, "basic")) 662 $$ = PF_OPTIMIZE_BASIC; 663 else if (!strcmp($1, "profile")) 664 $$ = PF_OPTIMIZE_BASIC | PF_OPTIMIZE_PROFILE; 665 else { 666 yyerror("unknown ruleset-optimization %s", $1); 667 YYERROR; 668 } 669 } 670 ; 671 672 optnodf : /* empty */ { $$ = 0; } 673 | NODF { $$ = 1; } 674 ; 675 676 option : SET REASSEMBLE yesno optnodf { 677 if (check_rulestate(PFCTL_STATE_OPTION)) 678 YYERROR; 679 pfctl_set_reassembly(pf, $3, $4); 680 } 681 | SET OPTIMIZATION STRING { 682 if (check_rulestate(PFCTL_STATE_OPTION)) { 683 free($3); 684 YYERROR; 685 } 686 if (pfctl_set_optimization(pf, $3) != 0) { 687 yyerror("unknown optimization %s", $3); 688 free($3); 689 YYERROR; 690 } 691 free($3); 692 } 693 | SET RULESET_OPTIMIZATION optimizer { 694 if (!(pf->opts & PF_OPT_OPTIMIZE)) { 695 pf->opts |= PF_OPT_OPTIMIZE; 696 pf->optimize = $3; 697 } 698 } 699 | SET TIMEOUT timeout_spec 700 | SET TIMEOUT '{' optnl timeout_list '}' 701 | SET LIMIT limit_spec 702 | SET LIMIT '{' optnl limit_list '}' 703 | SET LOGINTERFACE stringall { 704 if (check_rulestate(PFCTL_STATE_OPTION)) { 705 free($3); 706 YYERROR; 707 } 708 if (pfctl_set_logif(pf, $3) != 0) { 709 yyerror("error setting loginterface %s", $3); 710 free($3); 711 YYERROR; 712 } 713 free($3); 714 } 715 | SET HOSTID number { 716 if ($3 == 0 || $3 > UINT_MAX) { 717 yyerror("hostid must be non-zero"); 718 YYERROR; 719 } 720 pfctl_set_hostid(pf, $3); 721 } 722 | SET BLOCKPOLICY DROP { 723 if (pf->opts & PF_OPT_VERBOSE) 724 printf("set block-policy drop\n"); 725 if (check_rulestate(PFCTL_STATE_OPTION)) 726 YYERROR; 727 blockpolicy = PFRULE_DROP; 728 } 729 | SET BLOCKPOLICY RETURN { 730 if (pf->opts & PF_OPT_VERBOSE) 731 printf("set block-policy return\n"); 732 if (check_rulestate(PFCTL_STATE_OPTION)) 733 YYERROR; 734 blockpolicy = PFRULE_RETURN; 735 } 736 | SET FAILPOLICY DROP { 737 if (pf->opts & PF_OPT_VERBOSE) 738 printf("set fail-policy drop\n"); 739 if (check_rulestate(PFCTL_STATE_OPTION)) 740 YYERROR; 741 failpolicy = PFRULE_DROP; 742 } 743 | SET FAILPOLICY RETURN { 744 if (pf->opts & PF_OPT_VERBOSE) 745 printf("set fail-policy return\n"); 746 if (check_rulestate(PFCTL_STATE_OPTION)) 747 YYERROR; 748 failpolicy = PFRULE_RETURN; 749 } 750 | SET REQUIREORDER yesno { 751 if (pf->opts & PF_OPT_VERBOSE) 752 printf("set require-order %s\n", 753 $3 == 1 ? "yes" : "no"); 754 require_order = $3; 755 } 756 | SET FINGERPRINTS STRING { 757 if (pf->opts & PF_OPT_VERBOSE) 758 printf("set fingerprints \"%s\"\n", $3); 759 if (check_rulestate(PFCTL_STATE_OPTION)) { 760 free($3); 761 YYERROR; 762 } 763 if (!pf->anchor->name[0]) { 764 if (pfctl_file_fingerprints(pf->dev, 765 pf->opts, $3)) { 766 yyerror("error loading " 767 "fingerprints %s", $3); 768 free($3); 769 YYERROR; 770 } 771 } 772 free($3); 773 } 774 | SET STATEPOLICY statelock { 775 if (pf->opts & PF_OPT_VERBOSE) 776 switch ($3) { 777 case 0: 778 printf("set state-policy floating\n"); 779 break; 780 case PFRULE_IFBOUND: 781 printf("set state-policy if-bound\n"); 782 break; 783 } 784 default_statelock = $3; 785 } 786 | SET DEBUG STRING { 787 if (check_rulestate(PFCTL_STATE_OPTION)) { 788 free($3); 789 YYERROR; 790 } 791 if (pfctl_do_set_debug(pf, $3) != 0) { 792 yyerror("error setting debuglevel %s", $3); 793 free($3); 794 YYERROR; 795 } 796 free($3); 797 } 798 | SET SKIP interface { 799 if (expand_skip_interface($3) != 0) { 800 yyerror("error setting skip interface(s)"); 801 YYERROR; 802 } 803 } 804 | SET STATEDEFAULTS state_opt_list { 805 if (keep_state_defaults != NULL) { 806 yyerror("cannot redefine state-defaults"); 807 YYERROR; 808 } 809 keep_state_defaults = $3; 810 } 811 | SET KEEPCOUNTERS { 812 pf->keep_counters = true; 813 } 814 | SET SYNCOOKIES syncookie_val syncookie_opts { 815 if (pfctl_cfg_syncookies(pf, $3, $4)) { 816 yyerror("error setting syncookies"); 817 YYERROR; 818 } 819 } 820 ; 821 822 syncookie_val : STRING { 823 if (!strcmp($1, "never")) 824 $$ = PFCTL_SYNCOOKIES_NEVER; 825 else if (!strcmp($1, "adaptive")) 826 $$ = PFCTL_SYNCOOKIES_ADAPTIVE; 827 else if (!strcmp($1, "always")) 828 $$ = PFCTL_SYNCOOKIES_ALWAYS; 829 else { 830 yyerror("illegal value for syncookies"); 831 YYERROR; 832 } 833 } 834 ; 835 syncookie_opts : /* empty */ { $$ = NULL; } 836 | { 837 memset(&syncookie_opts, 0, sizeof(syncookie_opts)); 838 } '(' syncookie_opt_l ')' { $$ = &syncookie_opts; } 839 ; 840 841 syncookie_opt_l : syncookie_opt_l comma syncookie_opt 842 | syncookie_opt 843 ; 844 845 syncookie_opt : STRING STRING { 846 double val; 847 char *cp; 848 849 val = strtod($2, &cp); 850 if (cp == NULL || strcmp(cp, "%")) 851 YYERROR; 852 if (val <= 0 || val > 100) { 853 yyerror("illegal percentage value"); 854 YYERROR; 855 } 856 if (!strcmp($1, "start")) { 857 syncookie_opts.hi = val; 858 } else if (!strcmp($1, "end")) { 859 syncookie_opts.lo = val; 860 } else { 861 yyerror("illegal syncookie option"); 862 YYERROR; 863 } 864 } 865 ; 866 867 stringall : STRING { $$ = $1; } 868 | ALL { 869 if (($$ = strdup("all")) == NULL) { 870 err(1, "stringall: strdup"); 871 } 872 } 873 ; 874 875 string : STRING string { 876 if (asprintf(&$$, "%s %s", $1, $2) == -1) 877 err(1, "string: asprintf"); 878 free($1); 879 free($2); 880 } 881 | STRING 882 ; 883 884 varstring : numberstring varstring { 885 if (asprintf(&$$, "%s %s", $1, $2) == -1) 886 err(1, "string: asprintf"); 887 free($1); 888 free($2); 889 } 890 | numberstring 891 ; 892 893 numberstring : NUMBER { 894 char *s; 895 if (asprintf(&s, "%lld", (long long)$1) == -1) { 896 yyerror("string: asprintf"); 897 YYERROR; 898 } 899 $$ = s; 900 } 901 | STRING 902 ; 903 904 varset : STRING '=' varstring { 905 char *s = $1; 906 if (pf->opts & PF_OPT_VERBOSE) 907 printf("%s = \"%s\"\n", $1, $3); 908 while (*s++) { 909 if (isspace((unsigned char)*s)) { 910 yyerror("macro name cannot contain " 911 "whitespace"); 912 free($1); 913 free($3); 914 YYERROR; 915 } 916 } 917 if (symset($1, $3, 0) == -1) 918 err(1, "cannot store variable %s", $1); 919 free($1); 920 free($3); 921 } 922 ; 923 924 anchorname : STRING { $$ = $1; } 925 | /* empty */ { $$ = NULL; } 926 ; 927 928 pfa_anchorlist : /* empty */ 929 | pfa_anchorlist '\n' 930 | pfa_anchorlist pfrule '\n' 931 | pfa_anchorlist anchorrule '\n' 932 | pfa_anchorlist include '\n' 933 ; 934 935 pfa_anchor : '{' 936 { 937 char ta[PF_ANCHOR_NAME_SIZE]; 938 struct pfctl_ruleset *rs; 939 940 /* stepping into a brace anchor */ 941 pf->asd++; 942 pf->bn++; 943 944 /* 945 * Anchor contents are parsed before the anchor rule 946 * production completes, so we don't know the real 947 * location yet. Create a holding ruleset in the root; 948 * contents will be moved afterwards. 949 */ 950 snprintf(ta, PF_ANCHOR_NAME_SIZE, "_%d", pf->bn); 951 rs = pf_find_or_create_ruleset(ta); 952 if (rs == NULL) 953 err(1, "pfa_anchor: pf_find_or_create_ruleset"); 954 pf->astack[pf->asd] = rs->anchor; 955 pf->anchor = rs->anchor; 956 } '\n' pfa_anchorlist '}' 957 { 958 pf->alast = pf->anchor; 959 pf->asd--; 960 pf->anchor = pf->astack[pf->asd]; 961 } 962 | /* empty */ 963 ; 964 965 anchorrule : ANCHOR anchorname dir quick interface af proto fromto 966 filter_opts pfa_anchor 967 { 968 struct pfctl_rule r; 969 struct node_proto *proto; 970 971 if (check_rulestate(PFCTL_STATE_FILTER)) { 972 if ($2) 973 free($2); 974 YYERROR; 975 } 976 977 if ($2 && ($2[0] == '_' || strstr($2, "/_") != NULL)) { 978 free($2); 979 yyerror("anchor names beginning with '_' " 980 "are reserved for internal use"); 981 YYERROR; 982 } 983 984 pfctl_init_rule(&r); 985 986 if (pf->astack[pf->asd + 1]) { 987 if ($2 && strchr($2, '/') != NULL) { 988 free($2); 989 yyerror("anchor paths containing '/' " 990 "cannot be used for inline anchors."); 991 YYERROR; 992 } 993 994 /* Move inline rules into relative location. */ 995 pfctl_anchor_setup(&r, 996 &pf->astack[pf->asd]->ruleset, 997 $2 ? $2 : pf->alast->name); 998 999 if (r.anchor == NULL) 1000 err(1, "anchorrule: unable to " 1001 "create ruleset"); 1002 1003 if (pf->alast != r.anchor) { 1004 if (r.anchor->match) { 1005 yyerror("inline anchor '%s' " 1006 "already exists", 1007 r.anchor->name); 1008 YYERROR; 1009 } 1010 mv_rules(&pf->alast->ruleset, 1011 &r.anchor->ruleset); 1012 } 1013 pf_remove_if_empty_ruleset(&pf->alast->ruleset); 1014 pf->alast = r.anchor; 1015 } else { 1016 if (!$2) { 1017 yyerror("anchors without explicit " 1018 "rules must specify a name"); 1019 YYERROR; 1020 } 1021 } 1022 r.direction = $3; 1023 r.quick = $4.quick; 1024 r.af = $6; 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 if (filteropts_to_rule(&r, &$9)) 1044 YYERROR; 1045 1046 if ($9.keep.action) { 1047 yyerror("cannot specify state handling " 1048 "on anchors"); 1049 YYERROR; 1050 } 1051 1052 decide_address_family($8.src.host, &r.af); 1053 decide_address_family($8.dst.host, &r.af); 1054 1055 expand_rule(&r, false, $5, NULL, NULL, NULL, 1056 $7, $8.src_os, $8.src.host, $8.src.port, $8.dst.host, 1057 $8.dst.port, $9.uid, $9.gid, $9.rcv, $9.icmpspec, 1058 pf->astack[pf->asd + 1] ? pf->alast->name : $2); 1059 free($2); 1060 pf->astack[pf->asd + 1] = NULL; 1061 } 1062 | NATANCHOR string interface af proto fromto rtable { 1063 struct pfctl_rule r; 1064 1065 if (check_rulestate(PFCTL_STATE_NAT)) { 1066 free($2); 1067 YYERROR; 1068 } 1069 1070 pfctl_init_rule(&r); 1071 1072 r.action = PF_NAT; 1073 r.af = $4; 1074 r.rtableid = $7; 1075 1076 decide_address_family($6.src.host, &r.af); 1077 decide_address_family($6.dst.host, &r.af); 1078 1079 expand_rule(&r, false, $3, NULL, NULL, NULL, 1080 $5, $6.src_os, $6.src.host, $6.src.port, $6.dst.host, 1081 $6.dst.port, 0, 0, 0, 0, $2); 1082 free($2); 1083 } 1084 | RDRANCHOR string interface af proto fromto rtable { 1085 struct pfctl_rule r; 1086 1087 if (check_rulestate(PFCTL_STATE_NAT)) { 1088 free($2); 1089 YYERROR; 1090 } 1091 1092 pfctl_init_rule(&r); 1093 1094 r.action = PF_RDR; 1095 r.af = $4; 1096 r.rtableid = $7; 1097 1098 decide_address_family($6.src.host, &r.af); 1099 decide_address_family($6.dst.host, &r.af); 1100 1101 if ($6.src.port != NULL) { 1102 yyerror("source port parameter not supported" 1103 " in rdr-anchor"); 1104 YYERROR; 1105 } 1106 if ($6.dst.port != NULL) { 1107 if ($6.dst.port->next != NULL) { 1108 yyerror("destination port list " 1109 "expansion not supported in " 1110 "rdr-anchor"); 1111 YYERROR; 1112 } else if ($6.dst.port->op != PF_OP_EQ) { 1113 yyerror("destination port operators" 1114 " not supported in rdr-anchor"); 1115 YYERROR; 1116 } 1117 r.dst.port[0] = $6.dst.port->port[0]; 1118 r.dst.port[1] = $6.dst.port->port[1]; 1119 r.dst.port_op = $6.dst.port->op; 1120 } 1121 1122 expand_rule(&r, false, $3, NULL, NULL, NULL, 1123 $5, $6.src_os, $6.src.host, $6.src.port, $6.dst.host, 1124 $6.dst.port, 0, 0, 0, 0, $2); 1125 free($2); 1126 } 1127 | BINATANCHOR string interface af proto fromto rtable { 1128 struct pfctl_rule r; 1129 1130 if (check_rulestate(PFCTL_STATE_NAT)) { 1131 free($2); 1132 YYERROR; 1133 } 1134 1135 pfctl_init_rule(&r); 1136 1137 r.action = PF_BINAT; 1138 r.af = $4; 1139 r.rtableid = $7; 1140 if ($5 != NULL) { 1141 if ($5->next != NULL) { 1142 yyerror("proto list expansion" 1143 " not supported in binat-anchor"); 1144 YYERROR; 1145 } 1146 r.proto = $5->proto; 1147 free($5); 1148 } 1149 1150 if ($6.src.host != NULL || $6.src.port != NULL || 1151 $6.dst.host != NULL || $6.dst.port != NULL) { 1152 yyerror("fromto parameter not supported" 1153 " in binat-anchor"); 1154 YYERROR; 1155 } 1156 1157 decide_address_family($6.src.host, &r.af); 1158 decide_address_family($6.dst.host, &r.af); 1159 1160 pfctl_append_rule(pf, &r, $2); 1161 free($2); 1162 } 1163 ; 1164 1165 loadrule : LOAD ANCHOR string FROM string { 1166 struct loadanchors *loadanchor; 1167 1168 if (strlen(pf->anchor->path) + 1 + 1169 strlen($3) >= MAXPATHLEN) { 1170 yyerror("anchorname %s too long, max %u\n", 1171 $3, MAXPATHLEN - 1); 1172 free($3); 1173 YYERROR; 1174 } 1175 loadanchor = calloc(1, sizeof(struct loadanchors)); 1176 if (loadanchor == NULL) 1177 err(1, "loadrule: calloc"); 1178 if ((loadanchor->anchorname = malloc(MAXPATHLEN)) == 1179 NULL) 1180 err(1, "loadrule: malloc"); 1181 if (pf->anchor->name[0]) 1182 snprintf(loadanchor->anchorname, MAXPATHLEN, 1183 "%s/%s", pf->anchor->path, $3); 1184 else 1185 strlcpy(loadanchor->anchorname, $3, MAXPATHLEN); 1186 if ((loadanchor->filename = strdup($5)) == NULL) 1187 err(1, "loadrule: strdup"); 1188 1189 TAILQ_INSERT_TAIL(&loadanchorshead, loadanchor, 1190 entries); 1191 1192 free($3); 1193 free($5); 1194 }; 1195 1196 scrubaction : no SCRUB { 1197 $$.b2 = $$.w = 0; 1198 if ($1) 1199 $$.b1 = PF_NOSCRUB; 1200 else 1201 $$.b1 = PF_SCRUB; 1202 } 1203 ; 1204 1205 etherrule : ETHER action dir quick interface bridge etherproto etherfromto l3fromto etherfilter_opts 1206 { 1207 struct pfctl_eth_rule r; 1208 1209 bzero(&r, sizeof(r)); 1210 1211 if (check_rulestate(PFCTL_STATE_ETHER)) 1212 YYERROR; 1213 1214 r.action = $2.b1; 1215 r.direction = $3; 1216 r.quick = $4.quick; 1217 if ($10.tag != NULL) 1218 strlcpy(r.tagname, $10.tag, sizeof(r.tagname)); 1219 if ($10.match_tag) 1220 if (strlcpy(r.match_tagname, $10.match_tag, 1221 PF_TAG_NAME_SIZE) >= PF_TAG_NAME_SIZE) { 1222 yyerror("tag too long, max %u chars", 1223 PF_TAG_NAME_SIZE - 1); 1224 YYERROR; 1225 } 1226 r.match_tag_not = $10.match_tag_not; 1227 if ($10.queues.qname != NULL) 1228 strlcpy(r.qname, $10.queues.qname, sizeof(r.qname)); 1229 r.dnpipe = $10.dnpipe; 1230 r.dnflags = $10.free_flags; 1231 if (eth_rule_label(&r, $10.label)) 1232 YYERROR; 1233 for (int i = 0; i < PF_RULE_MAX_LABEL_COUNT; i++) 1234 free($10.label[i]); 1235 r.ridentifier = $10.ridentifier; 1236 1237 expand_eth_rule(&r, $5, $7, $8.src, $8.dst, 1238 $9.src.host, $9.dst.host, $6, ""); 1239 } 1240 ; 1241 1242 etherpfa_anchorlist : /* empty */ 1243 | etherpfa_anchorlist '\n' 1244 | etherpfa_anchorlist etherrule '\n' 1245 | etherpfa_anchorlist etheranchorrule '\n' 1246 ; 1247 1248 etherpfa_anchor : '{' 1249 { 1250 char ta[PF_ANCHOR_NAME_SIZE]; 1251 struct pfctl_eth_ruleset *rs; 1252 1253 /* steping into a brace anchor */ 1254 pf->asd++; 1255 pf->bn++; 1256 1257 /* create a holding ruleset in the root */ 1258 snprintf(ta, PF_ANCHOR_NAME_SIZE, "_%d", pf->bn); 1259 rs = pf_find_or_create_eth_ruleset(ta); 1260 if (rs == NULL) 1261 err(1, "etherpfa_anchor: pf_find_or_create_eth_ruleset"); 1262 pf->eastack[pf->asd] = rs->anchor; 1263 pf->eanchor = rs->anchor; 1264 } '\n' etherpfa_anchorlist '}' 1265 { 1266 pf->ealast = pf->eanchor; 1267 pf->asd--; 1268 pf->eanchor = pf->eastack[pf->asd]; 1269 } 1270 | /* empty */ 1271 ; 1272 1273 etheranchorrule : ETHER ANCHOR anchorname dir quick interface etherproto etherfromto l3fromto etherpfa_anchor 1274 { 1275 struct pfctl_eth_rule r; 1276 1277 if (check_rulestate(PFCTL_STATE_ETHER)) { 1278 free($3); 1279 YYERROR; 1280 } 1281 1282 if ($3 && ($3[0] == '_' || strstr($3, "/_") != NULL)) { 1283 free($3); 1284 yyerror("anchor names beginning with '_' " 1285 "are reserved for internal use"); 1286 YYERROR; 1287 } 1288 1289 memset(&r, 0, sizeof(r)); 1290 if (pf->eastack[pf->asd + 1]) { 1291 if ($3 && strchr($3, '/') != NULL) { 1292 free($3); 1293 yyerror("anchor paths containing '/' " 1294 "cannot be used for inline anchors."); 1295 YYERROR; 1296 } 1297 1298 /* Move inline rules into relative location. */ 1299 pfctl_eth_anchor_setup(pf, &r, 1300 &pf->eastack[pf->asd]->ruleset, 1301 $3 ? $3 : pf->ealast->name); 1302 if (r.anchor == NULL) 1303 err(1, "etheranchorrule: unable to " 1304 "create ruleset"); 1305 1306 if (pf->ealast != r.anchor) { 1307 if (r.anchor->match) { 1308 yyerror("inline anchor '%s' " 1309 "already exists", 1310 r.anchor->name); 1311 YYERROR; 1312 } 1313 mv_eth_rules(&pf->ealast->ruleset, 1314 &r.anchor->ruleset); 1315 } 1316 pf_remove_if_empty_eth_ruleset(&pf->ealast->ruleset); 1317 pf->ealast = r.anchor; 1318 } else { 1319 if (!$3) { 1320 yyerror("anchors without explicit " 1321 "rules must specify a name"); 1322 YYERROR; 1323 } 1324 } 1325 1326 r.direction = $4; 1327 r.quick = $5.quick; 1328 1329 expand_eth_rule(&r, $6, $7, $8.src, $8.dst, 1330 $9.src.host, $9.dst.host, NULL, 1331 pf->eastack[pf->asd + 1] ? pf->ealast->name : $3); 1332 1333 free($3); 1334 pf->eastack[pf->asd + 1] = NULL; 1335 } 1336 ; 1337 1338 etherfilter_opts : { 1339 bzero(&filter_opts, sizeof filter_opts); 1340 } 1341 etherfilter_opts_l 1342 { $$ = filter_opts; } 1343 | /* empty */ { 1344 bzero(&filter_opts, sizeof filter_opts); 1345 $$ = filter_opts; 1346 } 1347 ; 1348 1349 etherfilter_opts_l : etherfilter_opts_l etherfilter_opt 1350 | etherfilter_opt 1351 1352 etherfilter_opt : etherqname { 1353 if (filter_opts.queues.qname) { 1354 yyerror("queue cannot be redefined"); 1355 YYERROR; 1356 } 1357 filter_opts.queues = $1; 1358 } 1359 | RIDENTIFIER number { 1360 filter_opts.ridentifier = $2; 1361 } 1362 | label { 1363 if (filter_opts.labelcount >= PF_RULE_MAX_LABEL_COUNT) { 1364 yyerror("label can only be used %d times", PF_RULE_MAX_LABEL_COUNT); 1365 YYERROR; 1366 } 1367 filter_opts.label[filter_opts.labelcount++] = $1; 1368 } 1369 | TAG string { 1370 filter_opts.tag = $2; 1371 } 1372 | not TAGGED string { 1373 filter_opts.match_tag = $3; 1374 filter_opts.match_tag_not = $1; 1375 } 1376 | DNPIPE number { 1377 filter_opts.dnpipe = $2; 1378 filter_opts.free_flags |= PFRULE_DN_IS_PIPE; 1379 } 1380 | DNQUEUE number { 1381 filter_opts.dnpipe = $2; 1382 filter_opts.free_flags |= PFRULE_DN_IS_QUEUE; 1383 } 1384 ; 1385 1386 bridge : /* empty */ { 1387 $$ = NULL; 1388 } 1389 | BRIDGE_TO STRING { 1390 $$ = strdup($2); 1391 } 1392 ; 1393 1394 scrubrule : scrubaction dir logquick interface af proto fromto scrub_opts 1395 { 1396 struct pfctl_rule r; 1397 1398 if (check_rulestate(PFCTL_STATE_SCRUB)) 1399 YYERROR; 1400 1401 pfctl_init_rule(&r); 1402 1403 r.action = $1.b1; 1404 r.direction = $2; 1405 1406 r.log = $3.log; 1407 r.logif = $3.logif; 1408 if ($3.quick) { 1409 yyerror("scrub rules do not support 'quick'"); 1410 YYERROR; 1411 } 1412 1413 r.af = $5; 1414 if ($8.nodf) 1415 r.rule_flag |= PFRULE_NODF; 1416 if ($8.randomid) 1417 r.rule_flag |= PFRULE_RANDOMID; 1418 if ($8.reassemble_tcp) { 1419 if (r.direction != PF_INOUT) { 1420 yyerror("reassemble tcp rules can not " 1421 "specify direction"); 1422 YYERROR; 1423 } 1424 r.rule_flag |= PFRULE_REASSEMBLE_TCP; 1425 } 1426 if ($8.minttl) 1427 r.min_ttl = $8.minttl; 1428 if ($8.maxmss) 1429 r.max_mss = $8.maxmss; 1430 if ($8.marker & FOM_SETTOS) { 1431 r.rule_flag |= PFRULE_SET_TOS; 1432 r.set_tos = $8.settos; 1433 } 1434 if ($8.fragcache) 1435 r.rule_flag |= $8.fragcache; 1436 if ($8.match_tag) 1437 if (strlcpy(r.match_tagname, $8.match_tag, 1438 PF_TAG_NAME_SIZE) >= PF_TAG_NAME_SIZE) { 1439 yyerror("tag too long, max %u chars", 1440 PF_TAG_NAME_SIZE - 1); 1441 YYERROR; 1442 } 1443 r.match_tag_not = $8.match_tag_not; 1444 r.rtableid = $8.rtableid; 1445 1446 expand_rule(&r, false, $4, NULL, NULL, NULL, 1447 $6, $7.src_os, $7.src.host, $7.src.port, $7.dst.host, 1448 $7.dst.port, NULL, NULL, NULL, NULL, ""); 1449 } 1450 ; 1451 1452 scrub_opts : { 1453 bzero(&scrub_opts, sizeof scrub_opts); 1454 scrub_opts.rtableid = -1; 1455 } 1456 scrub_opts_l 1457 { $$ = scrub_opts; } 1458 | /* empty */ { 1459 bzero(&scrub_opts, sizeof scrub_opts); 1460 scrub_opts.rtableid = -1; 1461 $$ = scrub_opts; 1462 } 1463 ; 1464 1465 scrub_opts_l : scrub_opts_l comma scrub_opt 1466 | scrub_opt 1467 ; 1468 1469 scrub_opt : NODF { 1470 if (scrub_opts.nodf) { 1471 yyerror("no-df cannot be respecified"); 1472 YYERROR; 1473 } 1474 scrub_opts.nodf = 1; 1475 } 1476 | MINTTL NUMBER { 1477 if (scrub_opts.marker & FOM_MINTTL) { 1478 yyerror("min-ttl cannot be respecified"); 1479 YYERROR; 1480 } 1481 if ($2 < 0 || $2 > 255) { 1482 yyerror("illegal min-ttl value %d", $2); 1483 YYERROR; 1484 } 1485 scrub_opts.marker |= FOM_MINTTL; 1486 scrub_opts.minttl = $2; 1487 } 1488 | MAXMSS NUMBER { 1489 if (scrub_opts.marker & FOM_MAXMSS) { 1490 yyerror("max-mss cannot be respecified"); 1491 YYERROR; 1492 } 1493 if ($2 < 0 || $2 > 65535) { 1494 yyerror("illegal max-mss value %d", $2); 1495 YYERROR; 1496 } 1497 scrub_opts.marker |= FOM_MAXMSS; 1498 scrub_opts.maxmss = $2; 1499 } 1500 | SETTOS tos { 1501 if (scrub_opts.marker & FOM_SETTOS) { 1502 yyerror("set-tos cannot be respecified"); 1503 YYERROR; 1504 } 1505 scrub_opts.marker |= FOM_SETTOS; 1506 scrub_opts.settos = $2; 1507 } 1508 | fragcache { 1509 if (scrub_opts.marker & FOM_FRAGCACHE) { 1510 yyerror("fragcache cannot be respecified"); 1511 YYERROR; 1512 } 1513 scrub_opts.marker |= FOM_FRAGCACHE; 1514 scrub_opts.fragcache = $1; 1515 } 1516 | REASSEMBLE STRING { 1517 if (strcasecmp($2, "tcp") != 0) { 1518 yyerror("scrub reassemble supports only tcp, " 1519 "not '%s'", $2); 1520 free($2); 1521 YYERROR; 1522 } 1523 free($2); 1524 if (scrub_opts.reassemble_tcp) { 1525 yyerror("reassemble tcp cannot be respecified"); 1526 YYERROR; 1527 } 1528 scrub_opts.reassemble_tcp = 1; 1529 } 1530 | RANDOMID { 1531 if (scrub_opts.randomid) { 1532 yyerror("random-id cannot be respecified"); 1533 YYERROR; 1534 } 1535 scrub_opts.randomid = 1; 1536 } 1537 | RTABLE NUMBER { 1538 if ($2 < 0 || $2 > rt_tableid_max()) { 1539 yyerror("invalid rtable id"); 1540 YYERROR; 1541 } 1542 scrub_opts.rtableid = $2; 1543 } 1544 | not TAGGED string { 1545 scrub_opts.match_tag = $3; 1546 scrub_opts.match_tag_not = $1; 1547 } 1548 ; 1549 1550 fragcache : FRAGMENT REASSEMBLE { $$ = 0; /* default */ } 1551 | FRAGMENT NO REASSEMBLE { $$ = PFRULE_FRAGMENT_NOREASS; } 1552 ; 1553 1554 antispoof : ANTISPOOF logquick antispoof_ifspc af antispoof_opts { 1555 struct pfctl_rule r; 1556 struct node_host *h = NULL, *hh; 1557 struct node_if *i, *j; 1558 1559 if (check_rulestate(PFCTL_STATE_FILTER)) 1560 YYERROR; 1561 1562 for (i = $3; i; i = i->next) { 1563 pfctl_init_rule(&r); 1564 1565 r.action = PF_DROP; 1566 r.direction = PF_IN; 1567 r.log = $2.log; 1568 r.logif = $2.logif; 1569 r.quick = $2.quick; 1570 r.af = $4; 1571 r.ridentifier = $5.ridentifier; 1572 if (rule_label(&r, $5.label)) 1573 YYERROR; 1574 r.rtableid = $5.rtableid; 1575 j = calloc(1, sizeof(struct node_if)); 1576 if (j == NULL) 1577 err(1, "antispoof: calloc"); 1578 if (strlcpy(j->ifname, i->ifname, 1579 sizeof(j->ifname)) >= sizeof(j->ifname)) { 1580 free(j); 1581 yyerror("interface name too long"); 1582 YYERROR; 1583 } 1584 j->not = 1; 1585 if (i->dynamic) { 1586 h = calloc(1, sizeof(*h)); 1587 if (h == NULL) 1588 err(1, "address: calloc"); 1589 h->addr.type = PF_ADDR_DYNIFTL; 1590 set_ipmask(h, 128); 1591 if (strlcpy(h->addr.v.ifname, i->ifname, 1592 sizeof(h->addr.v.ifname)) >= 1593 sizeof(h->addr.v.ifname)) { 1594 free(h); 1595 yyerror( 1596 "interface name too long"); 1597 YYERROR; 1598 } 1599 hh = malloc(sizeof(*hh)); 1600 if (hh == NULL) 1601 err(1, "address: malloc"); 1602 bcopy(h, hh, sizeof(*hh)); 1603 h->addr.iflags = PFI_AFLAG_NETWORK; 1604 } else { 1605 h = ifa_lookup(j->ifname, 1606 PFI_AFLAG_NETWORK); 1607 hh = NULL; 1608 } 1609 1610 if (h != NULL) 1611 expand_rule(&r, false, j, NULL, NULL, 1612 NULL, NULL, NULL, h, NULL, NULL, 1613 NULL, NULL, NULL, NULL, NULL, ""); 1614 1615 if ((i->ifa_flags & IFF_LOOPBACK) == 0) { 1616 bzero(&r, sizeof(r)); 1617 1618 r.action = PF_DROP; 1619 r.direction = PF_IN; 1620 r.log = $2.log; 1621 r.logif = $2.logif; 1622 r.quick = $2.quick; 1623 r.af = $4; 1624 r.ridentifier = $5.ridentifier; 1625 if (rule_label(&r, $5.label)) 1626 YYERROR; 1627 r.rtableid = $5.rtableid; 1628 if (hh != NULL) 1629 h = hh; 1630 else 1631 h = ifa_lookup(i->ifname, 0); 1632 if (h != NULL) 1633 expand_rule(&r, false, NULL, 1634 NULL, NULL, NULL, NULL, 1635 NULL, h, NULL, NULL, NULL, 1636 NULL, NULL, NULL, NULL, ""); 1637 } else 1638 free(hh); 1639 } 1640 for (int i = 0; i < PF_RULE_MAX_LABEL_COUNT; i++) 1641 free($5.label[i]); 1642 } 1643 ; 1644 1645 antispoof_ifspc : FOR antispoof_if { $$ = $2; } 1646 | FOR '{' optnl antispoof_iflst '}' { $$ = $4; } 1647 ; 1648 1649 antispoof_iflst : antispoof_if optnl { $$ = $1; } 1650 | antispoof_iflst comma antispoof_if optnl { 1651 $1->tail->next = $3; 1652 $1->tail = $3; 1653 $$ = $1; 1654 } 1655 ; 1656 1657 antispoof_if : if_item { $$ = $1; } 1658 | '(' if_item ')' { 1659 $2->dynamic = 1; 1660 $$ = $2; 1661 } 1662 ; 1663 1664 antispoof_opts : { 1665 bzero(&antispoof_opts, sizeof antispoof_opts); 1666 antispoof_opts.rtableid = -1; 1667 } 1668 antispoof_opts_l 1669 { $$ = antispoof_opts; } 1670 | /* empty */ { 1671 bzero(&antispoof_opts, sizeof antispoof_opts); 1672 antispoof_opts.rtableid = -1; 1673 $$ = antispoof_opts; 1674 } 1675 ; 1676 1677 antispoof_opts_l : antispoof_opts_l antispoof_opt 1678 | antispoof_opt 1679 ; 1680 1681 antispoof_opt : label { 1682 if (antispoof_opts.labelcount >= PF_RULE_MAX_LABEL_COUNT) { 1683 yyerror("label can only be used %d times", PF_RULE_MAX_LABEL_COUNT); 1684 YYERROR; 1685 } 1686 antispoof_opts.label[antispoof_opts.labelcount++] = $1; 1687 } 1688 | RIDENTIFIER number { 1689 antispoof_opts.ridentifier = $2; 1690 } 1691 | RTABLE NUMBER { 1692 if ($2 < 0 || $2 > rt_tableid_max()) { 1693 yyerror("invalid rtable id"); 1694 YYERROR; 1695 } 1696 antispoof_opts.rtableid = $2; 1697 } 1698 ; 1699 1700 not : '!' { $$ = 1; } 1701 | /* empty */ { $$ = 0; } 1702 ; 1703 1704 tabledef : TABLE '<' STRING '>' table_opts { 1705 struct node_host *h, *nh; 1706 struct node_tinit *ti, *nti; 1707 1708 if (strlen($3) >= PF_TABLE_NAME_SIZE) { 1709 yyerror("table name too long, max %d chars", 1710 PF_TABLE_NAME_SIZE - 1); 1711 free($3); 1712 YYERROR; 1713 } 1714 if (pf->loadopt & PFCTL_FLAG_TABLE) 1715 if (process_tabledef($3, &$5, pf->opts)) { 1716 free($3); 1717 YYERROR; 1718 } 1719 free($3); 1720 for (ti = SIMPLEQ_FIRST(&$5.init_nodes); 1721 ti != SIMPLEQ_END(&$5.init_nodes); ti = nti) { 1722 if (ti->file) 1723 free(ti->file); 1724 for (h = ti->host; h != NULL; h = nh) { 1725 nh = h->next; 1726 free(h); 1727 } 1728 nti = SIMPLEQ_NEXT(ti, entries); 1729 free(ti); 1730 } 1731 } 1732 ; 1733 1734 table_opts : { 1735 bzero(&table_opts, sizeof table_opts); 1736 SIMPLEQ_INIT(&table_opts.init_nodes); 1737 } 1738 table_opts_l 1739 { $$ = table_opts; } 1740 | /* empty */ 1741 { 1742 bzero(&table_opts, sizeof table_opts); 1743 SIMPLEQ_INIT(&table_opts.init_nodes); 1744 $$ = table_opts; 1745 } 1746 ; 1747 1748 table_opts_l : table_opts_l table_opt 1749 | table_opt 1750 ; 1751 1752 table_opt : STRING { 1753 if (!strcmp($1, "const")) 1754 table_opts.flags |= PFR_TFLAG_CONST; 1755 else if (!strcmp($1, "persist")) 1756 table_opts.flags |= PFR_TFLAG_PERSIST; 1757 else if (!strcmp($1, "counters")) 1758 table_opts.flags |= PFR_TFLAG_COUNTERS; 1759 else { 1760 yyerror("invalid table option '%s'", $1); 1761 free($1); 1762 YYERROR; 1763 } 1764 free($1); 1765 } 1766 | '{' optnl '}' { table_opts.init_addr = 1; } 1767 | '{' optnl host_list '}' { 1768 struct node_host *n; 1769 struct node_tinit *ti; 1770 1771 for (n = $3; n != NULL; n = n->next) { 1772 switch (n->addr.type) { 1773 case PF_ADDR_ADDRMASK: 1774 continue; /* ok */ 1775 case PF_ADDR_RANGE: 1776 yyerror("address ranges are not " 1777 "permitted inside tables"); 1778 break; 1779 case PF_ADDR_DYNIFTL: 1780 yyerror("dynamic addresses are not " 1781 "permitted inside tables"); 1782 break; 1783 case PF_ADDR_TABLE: 1784 yyerror("tables cannot contain tables"); 1785 break; 1786 case PF_ADDR_NOROUTE: 1787 yyerror("\"no-route\" is not permitted " 1788 "inside tables"); 1789 break; 1790 case PF_ADDR_URPFFAILED: 1791 yyerror("\"urpf-failed\" is not " 1792 "permitted inside tables"); 1793 break; 1794 default: 1795 yyerror("unknown address type %d", 1796 n->addr.type); 1797 } 1798 YYERROR; 1799 } 1800 if (!(ti = calloc(1, sizeof(*ti)))) 1801 err(1, "table_opt: calloc"); 1802 ti->host = $3; 1803 SIMPLEQ_INSERT_TAIL(&table_opts.init_nodes, ti, 1804 entries); 1805 table_opts.init_addr = 1; 1806 } 1807 | FILENAME STRING { 1808 struct node_tinit *ti; 1809 1810 if (!(ti = calloc(1, sizeof(*ti)))) 1811 err(1, "table_opt: calloc"); 1812 ti->file = $2; 1813 SIMPLEQ_INSERT_TAIL(&table_opts.init_nodes, ti, 1814 entries); 1815 table_opts.init_addr = 1; 1816 } 1817 ; 1818 1819 altqif : ALTQ interface queue_opts QUEUE qassign { 1820 struct pf_altq a; 1821 1822 if (check_rulestate(PFCTL_STATE_QUEUE)) 1823 YYERROR; 1824 1825 memset(&a, 0, sizeof(a)); 1826 if ($3.scheduler.qtype == ALTQT_NONE) { 1827 yyerror("no scheduler specified!"); 1828 YYERROR; 1829 } 1830 a.scheduler = $3.scheduler.qtype; 1831 a.qlimit = $3.qlimit; 1832 a.tbrsize = $3.tbrsize; 1833 if ($5 == NULL && $3.scheduler.qtype != ALTQT_CODEL) { 1834 yyerror("no child queues specified"); 1835 YYERROR; 1836 } 1837 if (expand_altq(&a, $2, $5, $3.queue_bwspec, 1838 &$3.scheduler)) 1839 YYERROR; 1840 } 1841 ; 1842 1843 queuespec : QUEUE STRING interface queue_opts qassign { 1844 struct pf_altq a; 1845 1846 if (check_rulestate(PFCTL_STATE_QUEUE)) { 1847 free($2); 1848 YYERROR; 1849 } 1850 1851 memset(&a, 0, sizeof(a)); 1852 1853 if (strlcpy(a.qname, $2, sizeof(a.qname)) >= 1854 sizeof(a.qname)) { 1855 yyerror("queue name too long (max " 1856 "%d chars)", PF_QNAME_SIZE-1); 1857 free($2); 1858 YYERROR; 1859 } 1860 free($2); 1861 if ($4.tbrsize) { 1862 yyerror("cannot specify tbrsize for queue"); 1863 YYERROR; 1864 } 1865 if ($4.priority > 255) { 1866 yyerror("priority out of range: max 255"); 1867 YYERROR; 1868 } 1869 a.priority = $4.priority; 1870 a.qlimit = $4.qlimit; 1871 a.scheduler = $4.scheduler.qtype; 1872 if (expand_queue(&a, $3, $5, $4.queue_bwspec, 1873 &$4.scheduler)) { 1874 yyerror("errors in queue definition"); 1875 YYERROR; 1876 } 1877 } 1878 ; 1879 1880 queue_opts : { 1881 bzero(&queue_opts, sizeof queue_opts); 1882 queue_opts.priority = DEFAULT_PRIORITY; 1883 queue_opts.qlimit = DEFAULT_QLIMIT; 1884 queue_opts.scheduler.qtype = ALTQT_NONE; 1885 queue_opts.queue_bwspec.bw_percent = 100; 1886 } 1887 queue_opts_l 1888 { $$ = queue_opts; } 1889 | /* empty */ { 1890 bzero(&queue_opts, sizeof queue_opts); 1891 queue_opts.priority = DEFAULT_PRIORITY; 1892 queue_opts.qlimit = DEFAULT_QLIMIT; 1893 queue_opts.scheduler.qtype = ALTQT_NONE; 1894 queue_opts.queue_bwspec.bw_percent = 100; 1895 $$ = queue_opts; 1896 } 1897 ; 1898 1899 queue_opts_l : queue_opts_l queue_opt 1900 | queue_opt 1901 ; 1902 1903 queue_opt : BANDWIDTH bandwidth { 1904 if (queue_opts.marker & QOM_BWSPEC) { 1905 yyerror("bandwidth cannot be respecified"); 1906 YYERROR; 1907 } 1908 queue_opts.marker |= QOM_BWSPEC; 1909 queue_opts.queue_bwspec = $2; 1910 } 1911 | PRIORITY NUMBER { 1912 if (queue_opts.marker & QOM_PRIORITY) { 1913 yyerror("priority cannot be respecified"); 1914 YYERROR; 1915 } 1916 if ($2 < 0 || $2 > 255) { 1917 yyerror("priority out of range: max 255"); 1918 YYERROR; 1919 } 1920 queue_opts.marker |= QOM_PRIORITY; 1921 queue_opts.priority = $2; 1922 } 1923 | QLIMIT NUMBER { 1924 if (queue_opts.marker & QOM_QLIMIT) { 1925 yyerror("qlimit cannot be respecified"); 1926 YYERROR; 1927 } 1928 if ($2 < 0 || $2 > 65535) { 1929 yyerror("qlimit out of range: max 65535"); 1930 YYERROR; 1931 } 1932 queue_opts.marker |= QOM_QLIMIT; 1933 queue_opts.qlimit = $2; 1934 } 1935 | scheduler { 1936 if (queue_opts.marker & QOM_SCHEDULER) { 1937 yyerror("scheduler cannot be respecified"); 1938 YYERROR; 1939 } 1940 queue_opts.marker |= QOM_SCHEDULER; 1941 queue_opts.scheduler = $1; 1942 } 1943 | TBRSIZE NUMBER { 1944 if (queue_opts.marker & QOM_TBRSIZE) { 1945 yyerror("tbrsize cannot be respecified"); 1946 YYERROR; 1947 } 1948 if ($2 < 0 || $2 > UINT_MAX) { 1949 yyerror("tbrsize too big: max %u", UINT_MAX); 1950 YYERROR; 1951 } 1952 queue_opts.marker |= QOM_TBRSIZE; 1953 queue_opts.tbrsize = $2; 1954 } 1955 ; 1956 1957 bandwidth : STRING { 1958 double bps; 1959 char *cp; 1960 1961 $$.bw_percent = 0; 1962 1963 bps = strtod($1, &cp); 1964 if (cp != NULL) { 1965 if (strlen(cp) > 1) { 1966 char *cu = cp + 1; 1967 if (!strcmp(cu, "Bit") || 1968 !strcmp(cu, "B") || 1969 !strcmp(cu, "bit") || 1970 !strcmp(cu, "b")) { 1971 *cu = 0; 1972 } 1973 } 1974 if (!strcmp(cp, "b")) 1975 ; /* nothing */ 1976 else if (!strcmp(cp, "K")) 1977 bps *= 1000; 1978 else if (!strcmp(cp, "M")) 1979 bps *= 1000 * 1000; 1980 else if (!strcmp(cp, "G")) 1981 bps *= 1000 * 1000 * 1000; 1982 else if (!strcmp(cp, "%")) { 1983 if (bps < 0 || bps > 100) { 1984 yyerror("bandwidth spec " 1985 "out of range"); 1986 free($1); 1987 YYERROR; 1988 } 1989 $$.bw_percent = bps; 1990 bps = 0; 1991 } else { 1992 yyerror("unknown unit %s", cp); 1993 free($1); 1994 YYERROR; 1995 } 1996 } 1997 free($1); 1998 $$.bw_absolute = (u_int64_t)bps; 1999 } 2000 | NUMBER { 2001 if ($1 < 0 || $1 >= LLONG_MAX) { 2002 yyerror("bandwidth number too big"); 2003 YYERROR; 2004 } 2005 $$.bw_percent = 0; 2006 $$.bw_absolute = $1; 2007 } 2008 ; 2009 2010 scheduler : CBQ { 2011 $$.qtype = ALTQT_CBQ; 2012 $$.data.cbq_opts.flags = 0; 2013 } 2014 | CBQ '(' cbqflags_list ')' { 2015 $$.qtype = ALTQT_CBQ; 2016 $$.data.cbq_opts.flags = $3; 2017 } 2018 | PRIQ { 2019 $$.qtype = ALTQT_PRIQ; 2020 $$.data.priq_opts.flags = 0; 2021 } 2022 | PRIQ '(' priqflags_list ')' { 2023 $$.qtype = ALTQT_PRIQ; 2024 $$.data.priq_opts.flags = $3; 2025 } 2026 | HFSC { 2027 $$.qtype = ALTQT_HFSC; 2028 bzero(&$$.data.hfsc_opts, 2029 sizeof(struct node_hfsc_opts)); 2030 } 2031 | HFSC '(' hfsc_opts ')' { 2032 $$.qtype = ALTQT_HFSC; 2033 $$.data.hfsc_opts = $3; 2034 } 2035 | FAIRQ { 2036 $$.qtype = ALTQT_FAIRQ; 2037 bzero(&$$.data.fairq_opts, 2038 sizeof(struct node_fairq_opts)); 2039 } 2040 | FAIRQ '(' fairq_opts ')' { 2041 $$.qtype = ALTQT_FAIRQ; 2042 $$.data.fairq_opts = $3; 2043 } 2044 | CODEL { 2045 $$.qtype = ALTQT_CODEL; 2046 bzero(&$$.data.codel_opts, 2047 sizeof(struct codel_opts)); 2048 } 2049 | CODEL '(' codel_opts ')' { 2050 $$.qtype = ALTQT_CODEL; 2051 $$.data.codel_opts = $3; 2052 } 2053 ; 2054 2055 cbqflags_list : cbqflags_item { $$ |= $1; } 2056 | cbqflags_list comma cbqflags_item { $$ |= $3; } 2057 ; 2058 2059 cbqflags_item : STRING { 2060 if (!strcmp($1, "default")) 2061 $$ = CBQCLF_DEFCLASS; 2062 else if (!strcmp($1, "borrow")) 2063 $$ = CBQCLF_BORROW; 2064 else if (!strcmp($1, "red")) 2065 $$ = CBQCLF_RED; 2066 else if (!strcmp($1, "ecn")) 2067 $$ = CBQCLF_RED|CBQCLF_ECN; 2068 else if (!strcmp($1, "rio")) 2069 $$ = CBQCLF_RIO; 2070 else if (!strcmp($1, "codel")) 2071 $$ = CBQCLF_CODEL; 2072 else { 2073 yyerror("unknown cbq flag \"%s\"", $1); 2074 free($1); 2075 YYERROR; 2076 } 2077 free($1); 2078 } 2079 ; 2080 2081 priqflags_list : priqflags_item { $$ |= $1; } 2082 | priqflags_list comma priqflags_item { $$ |= $3; } 2083 ; 2084 2085 priqflags_item : STRING { 2086 if (!strcmp($1, "default")) 2087 $$ = PRCF_DEFAULTCLASS; 2088 else if (!strcmp($1, "red")) 2089 $$ = PRCF_RED; 2090 else if (!strcmp($1, "ecn")) 2091 $$ = PRCF_RED|PRCF_ECN; 2092 else if (!strcmp($1, "rio")) 2093 $$ = PRCF_RIO; 2094 else if (!strcmp($1, "codel")) 2095 $$ = PRCF_CODEL; 2096 else { 2097 yyerror("unknown priq flag \"%s\"", $1); 2098 free($1); 2099 YYERROR; 2100 } 2101 free($1); 2102 } 2103 ; 2104 2105 hfsc_opts : { 2106 bzero(&hfsc_opts, 2107 sizeof(struct node_hfsc_opts)); 2108 } 2109 hfscopts_list { 2110 $$ = hfsc_opts; 2111 } 2112 ; 2113 2114 hfscopts_list : hfscopts_item 2115 | hfscopts_list comma hfscopts_item 2116 ; 2117 2118 hfscopts_item : LINKSHARE bandwidth { 2119 if (hfsc_opts.linkshare.used) { 2120 yyerror("linkshare already specified"); 2121 YYERROR; 2122 } 2123 hfsc_opts.linkshare.m2 = $2; 2124 hfsc_opts.linkshare.used = 1; 2125 } 2126 | LINKSHARE '(' bandwidth comma NUMBER comma bandwidth ')' 2127 { 2128 if ($5 < 0 || $5 > INT_MAX) { 2129 yyerror("timing in curve out of range"); 2130 YYERROR; 2131 } 2132 if (hfsc_opts.linkshare.used) { 2133 yyerror("linkshare already specified"); 2134 YYERROR; 2135 } 2136 hfsc_opts.linkshare.m1 = $3; 2137 hfsc_opts.linkshare.d = $5; 2138 hfsc_opts.linkshare.m2 = $7; 2139 hfsc_opts.linkshare.used = 1; 2140 } 2141 | REALTIME bandwidth { 2142 if (hfsc_opts.realtime.used) { 2143 yyerror("realtime already specified"); 2144 YYERROR; 2145 } 2146 hfsc_opts.realtime.m2 = $2; 2147 hfsc_opts.realtime.used = 1; 2148 } 2149 | REALTIME '(' bandwidth comma NUMBER comma bandwidth ')' 2150 { 2151 if ($5 < 0 || $5 > INT_MAX) { 2152 yyerror("timing in curve out of range"); 2153 YYERROR; 2154 } 2155 if (hfsc_opts.realtime.used) { 2156 yyerror("realtime already specified"); 2157 YYERROR; 2158 } 2159 hfsc_opts.realtime.m1 = $3; 2160 hfsc_opts.realtime.d = $5; 2161 hfsc_opts.realtime.m2 = $7; 2162 hfsc_opts.realtime.used = 1; 2163 } 2164 | UPPERLIMIT bandwidth { 2165 if (hfsc_opts.upperlimit.used) { 2166 yyerror("upperlimit already specified"); 2167 YYERROR; 2168 } 2169 hfsc_opts.upperlimit.m2 = $2; 2170 hfsc_opts.upperlimit.used = 1; 2171 } 2172 | UPPERLIMIT '(' bandwidth comma NUMBER comma bandwidth ')' 2173 { 2174 if ($5 < 0 || $5 > INT_MAX) { 2175 yyerror("timing in curve out of range"); 2176 YYERROR; 2177 } 2178 if (hfsc_opts.upperlimit.used) { 2179 yyerror("upperlimit already specified"); 2180 YYERROR; 2181 } 2182 hfsc_opts.upperlimit.m1 = $3; 2183 hfsc_opts.upperlimit.d = $5; 2184 hfsc_opts.upperlimit.m2 = $7; 2185 hfsc_opts.upperlimit.used = 1; 2186 } 2187 | STRING { 2188 if (!strcmp($1, "default")) 2189 hfsc_opts.flags |= HFCF_DEFAULTCLASS; 2190 else if (!strcmp($1, "red")) 2191 hfsc_opts.flags |= HFCF_RED; 2192 else if (!strcmp($1, "ecn")) 2193 hfsc_opts.flags |= HFCF_RED|HFCF_ECN; 2194 else if (!strcmp($1, "rio")) 2195 hfsc_opts.flags |= HFCF_RIO; 2196 else if (!strcmp($1, "codel")) 2197 hfsc_opts.flags |= HFCF_CODEL; 2198 else { 2199 yyerror("unknown hfsc flag \"%s\"", $1); 2200 free($1); 2201 YYERROR; 2202 } 2203 free($1); 2204 } 2205 ; 2206 2207 fairq_opts : { 2208 bzero(&fairq_opts, 2209 sizeof(struct node_fairq_opts)); 2210 } 2211 fairqopts_list { 2212 $$ = fairq_opts; 2213 } 2214 ; 2215 2216 fairqopts_list : fairqopts_item 2217 | fairqopts_list comma fairqopts_item 2218 ; 2219 2220 fairqopts_item : LINKSHARE bandwidth { 2221 if (fairq_opts.linkshare.used) { 2222 yyerror("linkshare already specified"); 2223 YYERROR; 2224 } 2225 fairq_opts.linkshare.m2 = $2; 2226 fairq_opts.linkshare.used = 1; 2227 } 2228 | LINKSHARE '(' bandwidth number bandwidth ')' { 2229 if (fairq_opts.linkshare.used) { 2230 yyerror("linkshare already specified"); 2231 YYERROR; 2232 } 2233 fairq_opts.linkshare.m1 = $3; 2234 fairq_opts.linkshare.d = $4; 2235 fairq_opts.linkshare.m2 = $5; 2236 fairq_opts.linkshare.used = 1; 2237 } 2238 | HOGS bandwidth { 2239 fairq_opts.hogs_bw = $2; 2240 } 2241 | BUCKETS number { 2242 fairq_opts.nbuckets = $2; 2243 } 2244 | STRING { 2245 if (!strcmp($1, "default")) 2246 fairq_opts.flags |= FARF_DEFAULTCLASS; 2247 else if (!strcmp($1, "red")) 2248 fairq_opts.flags |= FARF_RED; 2249 else if (!strcmp($1, "ecn")) 2250 fairq_opts.flags |= FARF_RED|FARF_ECN; 2251 else if (!strcmp($1, "rio")) 2252 fairq_opts.flags |= FARF_RIO; 2253 else if (!strcmp($1, "codel")) 2254 fairq_opts.flags |= FARF_CODEL; 2255 else { 2256 yyerror("unknown fairq flag \"%s\"", $1); 2257 free($1); 2258 YYERROR; 2259 } 2260 free($1); 2261 } 2262 ; 2263 2264 codel_opts : { 2265 bzero(&codel_opts, 2266 sizeof(struct codel_opts)); 2267 } 2268 codelopts_list { 2269 $$ = codel_opts; 2270 } 2271 ; 2272 2273 codelopts_list : codelopts_item 2274 | codelopts_list comma codelopts_item 2275 ; 2276 2277 codelopts_item : INTERVAL number { 2278 if (codel_opts.interval) { 2279 yyerror("interval already specified"); 2280 YYERROR; 2281 } 2282 codel_opts.interval = $2; 2283 } 2284 | TARGET number { 2285 if (codel_opts.target) { 2286 yyerror("target already specified"); 2287 YYERROR; 2288 } 2289 codel_opts.target = $2; 2290 } 2291 | STRING { 2292 if (!strcmp($1, "ecn")) 2293 codel_opts.ecn = 1; 2294 else { 2295 yyerror("unknown codel option \"%s\"", $1); 2296 free($1); 2297 YYERROR; 2298 } 2299 free($1); 2300 } 2301 ; 2302 2303 qassign : /* empty */ { $$ = NULL; } 2304 | qassign_item { $$ = $1; } 2305 | '{' optnl qassign_list '}' { $$ = $3; } 2306 ; 2307 2308 qassign_list : qassign_item optnl { $$ = $1; } 2309 | qassign_list comma qassign_item optnl { 2310 $1->tail->next = $3; 2311 $1->tail = $3; 2312 $$ = $1; 2313 } 2314 ; 2315 2316 qassign_item : STRING { 2317 $$ = calloc(1, sizeof(struct node_queue)); 2318 if ($$ == NULL) 2319 err(1, "qassign_item: calloc"); 2320 if (strlcpy($$->queue, $1, sizeof($$->queue)) >= 2321 sizeof($$->queue)) { 2322 yyerror("queue name '%s' too long (max " 2323 "%d chars)", $1, sizeof($$->queue)-1); 2324 free($1); 2325 free($$); 2326 YYERROR; 2327 } 2328 free($1); 2329 $$->next = NULL; 2330 $$->tail = $$; 2331 } 2332 ; 2333 2334 pfrule : action dir logquick interface route af proto fromto 2335 filter_opts 2336 { 2337 struct pfctl_rule r; 2338 struct node_state_opt *o; 2339 struct node_proto *proto; 2340 int srctrack = 0; 2341 int statelock = 0; 2342 int adaptive = 0; 2343 int defaults = 0; 2344 2345 if (check_rulestate(PFCTL_STATE_FILTER)) 2346 YYERROR; 2347 2348 pfctl_init_rule(&r); 2349 2350 r.action = $1.b1; 2351 switch ($1.b2) { 2352 case PFRULE_RETURNRST: 2353 r.rule_flag |= PFRULE_RETURNRST; 2354 r.return_ttl = $1.w; 2355 break; 2356 case PFRULE_RETURNICMP: 2357 r.rule_flag |= PFRULE_RETURNICMP; 2358 r.return_icmp = $1.w; 2359 r.return_icmp6 = $1.w2; 2360 break; 2361 case PFRULE_RETURN: 2362 r.rule_flag |= PFRULE_RETURN; 2363 r.return_icmp = $1.w; 2364 r.return_icmp6 = $1.w2; 2365 break; 2366 } 2367 r.direction = $2; 2368 r.log = $3.log; 2369 r.logif = $3.logif; 2370 r.quick = $3.quick; 2371 r.af = $6; 2372 2373 if (filteropts_to_rule(&r, &$9)) 2374 YYERROR; 2375 2376 if ($9.flags.b1 || $9.flags.b2 || $8.src_os) { 2377 for (proto = $7; proto != NULL && 2378 proto->proto != IPPROTO_TCP; 2379 proto = proto->next) 2380 ; /* nothing */ 2381 if (proto == NULL && $7 != NULL) { 2382 if ($9.flags.b1 || $9.flags.b2) 2383 yyerror( 2384 "flags only apply to tcp"); 2385 if ($8.src_os) 2386 yyerror( 2387 "OS fingerprinting only " 2388 "apply to tcp"); 2389 YYERROR; 2390 } 2391 } 2392 2393 o = $9.keep.options; 2394 2395 /* 'keep state' by default on pass rules. */ 2396 if (!r.keep_state && !r.action && 2397 !($9.marker & FOM_KEEP)) { 2398 r.keep_state = PF_STATE_NORMAL; 2399 o = keep_state_defaults; 2400 defaults = 1; 2401 } 2402 2403 while (o) { 2404 struct node_state_opt *p = o; 2405 2406 switch (o->type) { 2407 case PF_STATE_OPT_MAX: 2408 if (r.max_states) { 2409 yyerror("state option 'max' " 2410 "multiple definitions"); 2411 YYERROR; 2412 } 2413 r.max_states = o->data.max_states; 2414 break; 2415 case PF_STATE_OPT_NOSYNC: 2416 if (r.rule_flag & PFRULE_NOSYNC) { 2417 yyerror("state option 'sync' " 2418 "multiple definitions"); 2419 YYERROR; 2420 } 2421 r.rule_flag |= PFRULE_NOSYNC; 2422 break; 2423 case PF_STATE_OPT_SRCTRACK: 2424 if (srctrack) { 2425 yyerror("state option " 2426 "'source-track' " 2427 "multiple definitions"); 2428 YYERROR; 2429 } 2430 srctrack = o->data.src_track; 2431 r.rule_flag |= PFRULE_SRCTRACK; 2432 break; 2433 case PF_STATE_OPT_MAX_SRC_STATES: 2434 if (r.max_src_states) { 2435 yyerror("state option " 2436 "'max-src-states' " 2437 "multiple definitions"); 2438 YYERROR; 2439 } 2440 if (o->data.max_src_states == 0) { 2441 yyerror("'max-src-states' must " 2442 "be > 0"); 2443 YYERROR; 2444 } 2445 r.max_src_states = 2446 o->data.max_src_states; 2447 r.rule_flag |= PFRULE_SRCTRACK; 2448 break; 2449 case PF_STATE_OPT_OVERLOAD: 2450 if (r.overload_tblname[0]) { 2451 yyerror("multiple 'overload' " 2452 "table definitions"); 2453 YYERROR; 2454 } 2455 if (strlcpy(r.overload_tblname, 2456 o->data.overload.tblname, 2457 PF_TABLE_NAME_SIZE) >= 2458 PF_TABLE_NAME_SIZE) { 2459 yyerror("state option: " 2460 "strlcpy"); 2461 YYERROR; 2462 } 2463 r.flush = o->data.overload.flush; 2464 break; 2465 case PF_STATE_OPT_MAX_SRC_CONN: 2466 if (r.max_src_conn) { 2467 yyerror("state option " 2468 "'max-src-conn' " 2469 "multiple definitions"); 2470 YYERROR; 2471 } 2472 if (o->data.max_src_conn == 0) { 2473 yyerror("'max-src-conn' " 2474 "must be > 0"); 2475 YYERROR; 2476 } 2477 r.max_src_conn = 2478 o->data.max_src_conn; 2479 r.rule_flag |= PFRULE_SRCTRACK | 2480 PFRULE_RULESRCTRACK; 2481 break; 2482 case PF_STATE_OPT_MAX_SRC_CONN_RATE: 2483 if (r.max_src_conn_rate.limit) { 2484 yyerror("state option " 2485 "'max-src-conn-rate' " 2486 "multiple definitions"); 2487 YYERROR; 2488 } 2489 if (!o->data.max_src_conn_rate.limit || 2490 !o->data.max_src_conn_rate.seconds) { 2491 yyerror("'max-src-conn-rate' " 2492 "values must be > 0"); 2493 YYERROR; 2494 } 2495 if (o->data.max_src_conn_rate.limit > 2496 PF_THRESHOLD_MAX) { 2497 yyerror("'max-src-conn-rate' " 2498 "maximum rate must be < %u", 2499 PF_THRESHOLD_MAX); 2500 YYERROR; 2501 } 2502 r.max_src_conn_rate.limit = 2503 o->data.max_src_conn_rate.limit; 2504 r.max_src_conn_rate.seconds = 2505 o->data.max_src_conn_rate.seconds; 2506 r.rule_flag |= PFRULE_SRCTRACK | 2507 PFRULE_RULESRCTRACK; 2508 break; 2509 case PF_STATE_OPT_MAX_SRC_NODES: 2510 if (r.max_src_nodes) { 2511 yyerror("state option " 2512 "'max-src-nodes' " 2513 "multiple definitions"); 2514 YYERROR; 2515 } 2516 if (o->data.max_src_nodes == 0) { 2517 yyerror("'max-src-nodes' must " 2518 "be > 0"); 2519 YYERROR; 2520 } 2521 r.max_src_nodes = 2522 o->data.max_src_nodes; 2523 r.rule_flag |= PFRULE_SRCTRACK | 2524 PFRULE_RULESRCTRACK; 2525 break; 2526 case PF_STATE_OPT_STATELOCK: 2527 if (statelock) { 2528 yyerror("state locking option: " 2529 "multiple definitions"); 2530 YYERROR; 2531 } 2532 statelock = 1; 2533 r.rule_flag |= o->data.statelock; 2534 break; 2535 case PF_STATE_OPT_SLOPPY: 2536 if (r.rule_flag & PFRULE_STATESLOPPY) { 2537 yyerror("state sloppy option: " 2538 "multiple definitions"); 2539 YYERROR; 2540 } 2541 r.rule_flag |= PFRULE_STATESLOPPY; 2542 break; 2543 case PF_STATE_OPT_PFLOW: 2544 if (r.rule_flag & PFRULE_PFLOW) { 2545 yyerror("state pflow option: " 2546 "multiple definitions"); 2547 YYERROR; 2548 } 2549 r.rule_flag |= PFRULE_PFLOW; 2550 break; 2551 case PF_STATE_OPT_ALLOW_RELATED: 2552 if (r.rule_flag & PFRULE_ALLOW_RELATED) { 2553 yyerror("state allow-related option: " 2554 "multiple definitions"); 2555 YYERROR; 2556 } 2557 r.rule_flag |= PFRULE_ALLOW_RELATED; 2558 break; 2559 case PF_STATE_OPT_TIMEOUT: 2560 if (o->data.timeout.number == 2561 PFTM_ADAPTIVE_START || 2562 o->data.timeout.number == 2563 PFTM_ADAPTIVE_END) 2564 adaptive = 1; 2565 if (r.timeout[o->data.timeout.number]) { 2566 yyerror("state timeout %s " 2567 "multiple definitions", 2568 pf_timeouts[o->data. 2569 timeout.number].name); 2570 YYERROR; 2571 } 2572 r.timeout[o->data.timeout.number] = 2573 o->data.timeout.seconds; 2574 } 2575 o = o->next; 2576 if (!defaults) 2577 free(p); 2578 } 2579 2580 /* 'flags S/SA' by default on stateful rules */ 2581 if (!r.action && !r.flags && !r.flagset && 2582 !$9.fragment && !($9.marker & FOM_FLAGS) && 2583 r.keep_state) { 2584 r.flags = parse_flags("S"); 2585 r.flagset = parse_flags("SA"); 2586 } 2587 if (!adaptive && r.max_states) { 2588 r.timeout[PFTM_ADAPTIVE_START] = 2589 (r.max_states / 10) * 6; 2590 r.timeout[PFTM_ADAPTIVE_END] = 2591 (r.max_states / 10) * 12; 2592 } 2593 if (r.rule_flag & PFRULE_SRCTRACK) { 2594 if (srctrack == PF_SRCTRACK_GLOBAL && 2595 r.max_src_nodes) { 2596 yyerror("'max-src-nodes' is " 2597 "incompatible with " 2598 "'source-track global'"); 2599 YYERROR; 2600 } 2601 if (srctrack == PF_SRCTRACK_GLOBAL && 2602 r.max_src_conn) { 2603 yyerror("'max-src-conn' is " 2604 "incompatible with " 2605 "'source-track global'"); 2606 YYERROR; 2607 } 2608 if (srctrack == PF_SRCTRACK_GLOBAL && 2609 r.max_src_conn_rate.seconds) { 2610 yyerror("'max-src-conn-rate' is " 2611 "incompatible with " 2612 "'source-track global'"); 2613 YYERROR; 2614 } 2615 if (r.timeout[PFTM_SRC_NODE] < 2616 r.max_src_conn_rate.seconds) 2617 r.timeout[PFTM_SRC_NODE] = 2618 r.max_src_conn_rate.seconds; 2619 r.rule_flag |= PFRULE_SRCTRACK; 2620 if (srctrack == PF_SRCTRACK_RULE) 2621 r.rule_flag |= PFRULE_RULESRCTRACK; 2622 } 2623 if (r.keep_state && !statelock) 2624 r.rule_flag |= default_statelock; 2625 2626 decide_address_family($8.src.host, &r.af); 2627 decide_address_family($8.dst.host, &r.af); 2628 2629 if ($5.rt) { 2630 if (!r.direction) { 2631 yyerror("direction must be explicit " 2632 "with rules that specify routing"); 2633 YYERROR; 2634 } 2635 r.rt = $5.rt; 2636 decide_address_family($5.redirspec->host, &r.af); 2637 if (!(r.rule_flag & PFRULE_AFTO)) 2638 remove_invalid_hosts(&($5.redirspec->host), &r.af); 2639 if ($5.redirspec->host == NULL) { 2640 yyerror("no routing address with " 2641 "matching address family found."); 2642 YYERROR; 2643 } 2644 } 2645 #ifdef __FreeBSD__ 2646 r.divert.port = $9.divert.port; 2647 #else 2648 if ((r.divert.port = $9.divert.port)) { 2649 if (r.direction == PF_OUT) { 2650 if ($9.divert.addr) { 2651 yyerror("address specified " 2652 "for outgoing divert"); 2653 YYERROR; 2654 } 2655 bzero(&r.divert.addr, 2656 sizeof(r.divert.addr)); 2657 } else { 2658 if (!$9.divert.addr) { 2659 yyerror("no address specified " 2660 "for incoming divert"); 2661 YYERROR; 2662 } 2663 if ($9.divert.addr->af != r.af) { 2664 yyerror("address family " 2665 "mismatch for divert"); 2666 YYERROR; 2667 } 2668 r.divert.addr = 2669 $9.divert.addr->addr.v.a.addr; 2670 } 2671 } 2672 #endif 2673 2674 if ($9.dnpipe || $9.dnrpipe) { 2675 r.dnpipe = $9.dnpipe; 2676 r.dnrpipe = $9.dnrpipe; 2677 if ($9.free_flags & PFRULE_DN_IS_PIPE) 2678 r.free_flags |= PFRULE_DN_IS_PIPE; 2679 else 2680 r.free_flags |= PFRULE_DN_IS_QUEUE; 2681 } 2682 2683 if ($9.marker & FOM_AFTO) { 2684 r.naf = $9.nat->af; 2685 } else { 2686 if ($9.nat) { 2687 if (!r.af && ! $9.nat->host->ifindex) 2688 r.af = $9.nat->host->af; 2689 remove_invalid_hosts(&($9.nat->host), &r.af); 2690 if (invalid_redirect($9.nat->host, r.af)) 2691 YYERROR; 2692 if ($9.nat->host->addr.type == PF_ADDR_DYNIFTL) { 2693 if (($9.nat->host = gen_dynnode($9.nat->host, r.af)) == NULL) 2694 err(1, "calloc"); 2695 } 2696 if (check_netmask($9.nat->host, r.af)) 2697 YYERROR; 2698 } 2699 if ($9.rdr) { 2700 if (!r.af && ! $9.rdr->host->ifindex) 2701 r.af = $9.rdr->host->af; 2702 remove_invalid_hosts(&($9.rdr->host), &r.af); 2703 if (invalid_redirect($9.rdr->host, r.af)) 2704 YYERROR; 2705 if ($9.rdr->host->addr.type == PF_ADDR_DYNIFTL) { 2706 if (($9.rdr->host = gen_dynnode($9.rdr->host, r.af)) == NULL) 2707 err(1, "calloc"); 2708 } 2709 if (check_netmask($9.rdr->host, r.af)) 2710 YYERROR; 2711 } 2712 } 2713 2714 expand_rule(&r, false, $4, $9.nat, $9.rdr, $5.redirspec, 2715 $7, $8.src_os, $8.src.host, $8.src.port, $8.dst.host, 2716 $8.dst.port, $9.uid, $9.gid, $9.rcv, $9.icmpspec, ""); 2717 } 2718 ; 2719 2720 filter_opts : { 2721 bzero(&filter_opts, sizeof filter_opts); 2722 filter_opts.rtableid = -1; 2723 } 2724 filter_opts_l 2725 { $$ = filter_opts; } 2726 | /* empty */ { 2727 bzero(&filter_opts, sizeof filter_opts); 2728 filter_opts.rtableid = -1; 2729 $$ = filter_opts; 2730 } 2731 ; 2732 2733 filter_opts_l : filter_opts_l filter_opt 2734 | filter_opt 2735 ; 2736 2737 filter_opt : USER uids { 2738 if (filter_opts.uid) 2739 $2->tail->next = filter_opts.uid; 2740 filter_opts.uid = $2; 2741 } 2742 | GROUP gids { 2743 if (filter_opts.gid) 2744 $2->tail->next = filter_opts.gid; 2745 filter_opts.gid = $2; 2746 } 2747 | flags { 2748 if (filter_opts.marker & FOM_FLAGS) { 2749 yyerror("flags cannot be redefined"); 2750 YYERROR; 2751 } 2752 filter_opts.marker |= FOM_FLAGS; 2753 filter_opts.flags.b1 |= $1.b1; 2754 filter_opts.flags.b2 |= $1.b2; 2755 filter_opts.flags.w |= $1.w; 2756 filter_opts.flags.w2 |= $1.w2; 2757 } 2758 | icmpspec { 2759 if (filter_opts.marker & FOM_ICMP) { 2760 yyerror("icmp-type cannot be redefined"); 2761 YYERROR; 2762 } 2763 filter_opts.marker |= FOM_ICMP; 2764 filter_opts.icmpspec = $1; 2765 } 2766 | PRIO NUMBER { 2767 if (filter_opts.marker & FOM_PRIO) { 2768 yyerror("prio cannot be redefined"); 2769 YYERROR; 2770 } 2771 if ($2 < 0 || $2 > PF_PRIO_MAX) { 2772 yyerror("prio must be 0 - %u", PF_PRIO_MAX); 2773 YYERROR; 2774 } 2775 filter_opts.marker |= FOM_PRIO; 2776 filter_opts.prio = $2; 2777 } 2778 | TOS tos { 2779 if (filter_opts.marker & FOM_TOS) { 2780 yyerror("tos cannot be redefined"); 2781 YYERROR; 2782 } 2783 filter_opts.marker |= FOM_TOS; 2784 filter_opts.tos = $2; 2785 } 2786 | keep { 2787 if (filter_opts.marker & FOM_KEEP) { 2788 yyerror("modulate or keep cannot be redefined"); 2789 YYERROR; 2790 } 2791 filter_opts.marker |= FOM_KEEP; 2792 filter_opts.keep.action = $1.action; 2793 filter_opts.keep.options = $1.options; 2794 } 2795 | RIDENTIFIER number { 2796 filter_opts.ridentifier = $2; 2797 } 2798 | FRAGMENT { 2799 filter_opts.fragment = 1; 2800 } 2801 | ALLOWOPTS { 2802 filter_opts.allowopts = 1; 2803 } 2804 | label { 2805 if (filter_opts.labelcount >= PF_RULE_MAX_LABEL_COUNT) { 2806 yyerror("label can only be used %d times", PF_RULE_MAX_LABEL_COUNT); 2807 YYERROR; 2808 } 2809 filter_opts.label[filter_opts.labelcount++] = $1; 2810 } 2811 | qname { 2812 if (filter_opts.queues.qname) { 2813 yyerror("queue cannot be redefined"); 2814 YYERROR; 2815 } 2816 filter_opts.queues = $1; 2817 } 2818 | DNPIPE number { 2819 filter_opts.dnpipe = $2; 2820 filter_opts.free_flags |= PFRULE_DN_IS_PIPE; 2821 } 2822 | DNPIPE '(' number ')' { 2823 filter_opts.dnpipe = $3; 2824 filter_opts.free_flags |= PFRULE_DN_IS_PIPE; 2825 } 2826 | DNPIPE '(' number comma number ')' { 2827 filter_opts.dnrpipe = $5; 2828 filter_opts.dnpipe = $3; 2829 filter_opts.free_flags |= PFRULE_DN_IS_PIPE; 2830 } 2831 | DNQUEUE number { 2832 filter_opts.dnpipe = $2; 2833 filter_opts.free_flags |= PFRULE_DN_IS_QUEUE; 2834 } 2835 | DNQUEUE '(' number comma number ')' { 2836 filter_opts.dnrpipe = $5; 2837 filter_opts.dnpipe = $3; 2838 filter_opts.free_flags |= PFRULE_DN_IS_QUEUE; 2839 } 2840 | DNQUEUE '(' number ')' { 2841 filter_opts.dnpipe = $3; 2842 filter_opts.free_flags |= PFRULE_DN_IS_QUEUE; 2843 } 2844 | TAG string { 2845 filter_opts.tag = $2; 2846 } 2847 | not TAGGED string { 2848 filter_opts.match_tag = $3; 2849 filter_opts.match_tag_not = $1; 2850 } 2851 | not RECEIVEDON if_item { 2852 if (filter_opts.rcv) { 2853 yyerror("cannot respecify received-on"); 2854 YYERROR; 2855 } 2856 filter_opts.rcv = $3; 2857 filter_opts.rcv->not = $1; 2858 } 2859 | PROBABILITY probability { 2860 double p; 2861 2862 p = floor($2 * UINT_MAX + 0.5); 2863 if (p < 0.0 || p > UINT_MAX) { 2864 yyerror("invalid probability: %lf", p); 2865 YYERROR; 2866 } 2867 filter_opts.prob = (u_int32_t)p; 2868 if (filter_opts.prob == 0) 2869 filter_opts.prob = 1; 2870 } 2871 | RTABLE NUMBER { 2872 if ($2 < 0 || $2 > rt_tableid_max()) { 2873 yyerror("invalid rtable id"); 2874 YYERROR; 2875 } 2876 filter_opts.rtableid = $2; 2877 } 2878 | DIVERTTO portplain { 2879 #ifdef __FreeBSD__ 2880 filter_opts.divert.port = $2.a; 2881 if (!filter_opts.divert.port) { 2882 yyerror("invalid divert port: %u", ntohs($2.a)); 2883 YYERROR; 2884 } 2885 #endif 2886 } 2887 | DIVERTTO STRING PORT portplain { 2888 #ifndef __FreeBSD__ 2889 if ((filter_opts.divert.addr = host($2, pf->opts)) == NULL) { 2890 yyerror("could not parse divert address: %s", 2891 $2); 2892 free($2); 2893 YYERROR; 2894 } 2895 #else 2896 if ($2) 2897 #endif 2898 free($2); 2899 filter_opts.divert.port = $4.a; 2900 if (!filter_opts.divert.port) { 2901 yyerror("invalid divert port: %u", ntohs($4.a)); 2902 YYERROR; 2903 } 2904 } 2905 | DIVERTREPLY { 2906 #ifdef __FreeBSD__ 2907 yyerror("divert-reply has no meaning in FreeBSD pf(4)"); 2908 YYERROR; 2909 #else 2910 filter_opts.divert.port = 1; /* some random value */ 2911 #endif 2912 } 2913 | SCRUB '(' scrub_opts ')' { 2914 filter_opts.nodf = $3.nodf; 2915 filter_opts.minttl = $3.minttl; 2916 if ($3.marker & FOM_SETTOS) { 2917 /* Old style rules are "scrub set-tos 0x42" 2918 * New style are "set tos 0x42 scrub (...)" 2919 * What is in "scrub(...)"" is unfortunately the 2920 * original scrub syntax so it would overwrite 2921 * "set tos" of a pass/match rule. 2922 */ 2923 filter_opts.settos = $3.settos; 2924 } 2925 filter_opts.randomid = $3.randomid; 2926 filter_opts.max_mss = $3.maxmss; 2927 if ($3.reassemble_tcp) 2928 filter_opts.marker |= FOM_SCRUB_TCP; 2929 filter_opts.marker |= $3.marker; 2930 } 2931 | NATTO port_redirspec { 2932 if (filter_opts.nat) { 2933 yyerror("cannot respecify nat-to/binat-to"); 2934 YYERROR; 2935 } 2936 filter_opts.nat = $2; 2937 } 2938 | RDRTO port_redirspec { 2939 if (filter_opts.rdr) { 2940 yyerror("cannot respecify rdr-to"); 2941 YYERROR; 2942 } 2943 filter_opts.rdr = $2; 2944 } 2945 | BINATTO port_redirspec { 2946 if (filter_opts.nat) { 2947 yyerror("cannot respecify nat-to/binat-to"); 2948 YYERROR; 2949 } 2950 filter_opts.nat = $2; 2951 filter_opts.nat->binat = 1; 2952 filter_opts.nat->pool_opts.staticport = 1; 2953 } 2954 | AFTO af FROM port_redirspec { 2955 if (filter_opts.nat) { 2956 yyerror("cannot respecify af-to"); 2957 YYERROR; 2958 } 2959 if ($2 == 0) { 2960 yyerror("no address family specified"); 2961 YYERROR; 2962 } 2963 2964 filter_opts.nat = $4; 2965 filter_opts.nat->af = $2; 2966 if ($4->af && $4->af != $2) { 2967 yyerror("af-to addresses must be in the " 2968 "target address family"); 2969 YYERROR; 2970 } 2971 filter_opts.marker |= FOM_AFTO; 2972 } 2973 | AFTO af FROM port_redirspec TO port_redirspec { 2974 if (filter_opts.nat) { 2975 yyerror("cannot respecify af-to"); 2976 YYERROR; 2977 } 2978 if ($2 == 0) { 2979 yyerror("no address family specified"); 2980 YYERROR; 2981 } 2982 filter_opts.nat = $4; 2983 filter_opts.nat->af = $2; 2984 filter_opts.rdr = $6; 2985 filter_opts.rdr->af = $2; 2986 if (($4->af && $4->host->af != $2) || 2987 ($6->af && $6->host->af != $2)) { 2988 yyerror("af-to addresses must be in the " 2989 "target address family"); 2990 YYERROR; 2991 } 2992 filter_opts.marker |= FOM_AFTO; 2993 } 2994 | MAXPKTRATE NUMBER '/' NUMBER { 2995 if ($2 < 0 || $2 > UINT_MAX || 2996 $4 < 0 || $4 > UINT_MAX) { 2997 yyerror("only positive values permitted"); 2998 YYERROR; 2999 } 3000 if (filter_opts.pktrate.limit) { 3001 yyerror("cannot respecify max-pkt-rate"); 3002 YYERROR; 3003 } 3004 filter_opts.pktrate.limit = $2; 3005 filter_opts.pktrate.seconds = $4; 3006 } 3007 | MAXPKTSIZE NUMBER { 3008 if ($2 < 0 || $2 > UINT16_MAX) { 3009 yyerror("only positive values permitted"); 3010 YYERROR; 3011 } 3012 filter_opts.max_pkt_size = $2; 3013 } 3014 | filter_sets 3015 ; 3016 3017 filter_sets : SET '(' filter_sets_l ')' { $$ = filter_opts; } 3018 | SET filter_set { $$ = filter_opts; } 3019 ; 3020 3021 filter_sets_l : filter_sets_l comma filter_set 3022 | filter_set 3023 ; 3024 3025 filter_set : prio { 3026 if (filter_opts.marker & FOM_SETPRIO) { 3027 yyerror("prio cannot be redefined"); 3028 YYERROR; 3029 } 3030 filter_opts.marker |= FOM_SETPRIO; 3031 filter_opts.set_prio[0] = $1.b1; 3032 filter_opts.set_prio[1] = $1.b2; 3033 } 3034 | TOS tos { 3035 if (filter_opts.marker & FOM_SETTOS) { 3036 yyerror("tos cannot be respecified"); 3037 YYERROR; 3038 } 3039 filter_opts.marker |= FOM_SETTOS; 3040 filter_opts.settos = $2; 3041 } 3042 prio : PRIO NUMBER { 3043 if ($2 < 0 || $2 > PF_PRIO_MAX) { 3044 yyerror("prio must be 0 - %u", PF_PRIO_MAX); 3045 YYERROR; 3046 } 3047 $$.b1 = $$.b2 = $2; 3048 } 3049 | PRIO '(' NUMBER comma NUMBER ')' { 3050 if ($3 < 0 || $3 > PF_PRIO_MAX || 3051 $5 < 0 || $5 > PF_PRIO_MAX) { 3052 yyerror("prio must be 0 - %u", PF_PRIO_MAX); 3053 YYERROR; 3054 } 3055 $$.b1 = $3; 3056 $$.b2 = $5; 3057 } 3058 ; 3059 3060 probability : STRING { 3061 char *e; 3062 double p = strtod($1, &e); 3063 3064 if (*e == '%') { 3065 p *= 0.01; 3066 e++; 3067 } 3068 if (*e) { 3069 yyerror("invalid probability: %s", $1); 3070 free($1); 3071 YYERROR; 3072 } 3073 free($1); 3074 $$ = p; 3075 } 3076 | NUMBER { 3077 $$ = (double)$1; 3078 } 3079 ; 3080 3081 3082 action : PASS { 3083 $$.b1 = PF_PASS; 3084 $$.b2 = failpolicy; 3085 $$.w = returnicmpdefault; 3086 $$.w2 = returnicmp6default; 3087 } 3088 | MATCH { $$.b1 = PF_MATCH; $$.b2 = $$.w = 0; } 3089 | BLOCK blockspec { $$ = $2; $$.b1 = PF_DROP; } 3090 ; 3091 3092 blockspec : /* empty */ { 3093 $$.b2 = blockpolicy; 3094 $$.w = returnicmpdefault; 3095 $$.w2 = returnicmp6default; 3096 } 3097 | DROP { 3098 $$.b2 = PFRULE_DROP; 3099 $$.w = 0; 3100 $$.w2 = 0; 3101 } 3102 | RETURNRST { 3103 $$.b2 = PFRULE_RETURNRST; 3104 $$.w = 0; 3105 $$.w2 = 0; 3106 } 3107 | RETURNRST '(' TTL NUMBER ')' { 3108 if ($4 < 0 || $4 > 255) { 3109 yyerror("illegal ttl value %d", $4); 3110 YYERROR; 3111 } 3112 $$.b2 = PFRULE_RETURNRST; 3113 $$.w = $4; 3114 $$.w2 = 0; 3115 } 3116 | RETURNICMP { 3117 $$.b2 = PFRULE_RETURNICMP; 3118 $$.w = returnicmpdefault; 3119 $$.w2 = returnicmp6default; 3120 } 3121 | RETURNICMP6 { 3122 $$.b2 = PFRULE_RETURNICMP; 3123 $$.w = returnicmpdefault; 3124 $$.w2 = returnicmp6default; 3125 } 3126 | RETURNICMP '(' reticmpspec ')' { 3127 $$.b2 = PFRULE_RETURNICMP; 3128 $$.w = $3; 3129 $$.w2 = returnicmpdefault; 3130 } 3131 | RETURNICMP6 '(' reticmp6spec ')' { 3132 $$.b2 = PFRULE_RETURNICMP; 3133 $$.w = returnicmpdefault; 3134 $$.w2 = $3; 3135 } 3136 | RETURNICMP '(' reticmpspec comma reticmp6spec ')' { 3137 $$.b2 = PFRULE_RETURNICMP; 3138 $$.w = $3; 3139 $$.w2 = $5; 3140 } 3141 | RETURN { 3142 $$.b2 = PFRULE_RETURN; 3143 $$.w = returnicmpdefault; 3144 $$.w2 = returnicmp6default; 3145 } 3146 ; 3147 3148 reticmpspec : STRING { 3149 if (!($$ = parseicmpspec($1, AF_INET))) { 3150 free($1); 3151 YYERROR; 3152 } 3153 free($1); 3154 } 3155 | NUMBER { 3156 u_int8_t icmptype; 3157 3158 if ($1 < 0 || $1 > 255) { 3159 yyerror("invalid icmp code %lu", $1); 3160 YYERROR; 3161 } 3162 icmptype = returnicmpdefault >> 8; 3163 $$ = (icmptype << 8 | $1); 3164 } 3165 ; 3166 3167 reticmp6spec : STRING { 3168 if (!($$ = parseicmpspec($1, AF_INET6))) { 3169 free($1); 3170 YYERROR; 3171 } 3172 free($1); 3173 } 3174 | NUMBER { 3175 u_int8_t icmptype; 3176 3177 if ($1 < 0 || $1 > 255) { 3178 yyerror("invalid icmp code %lu", $1); 3179 YYERROR; 3180 } 3181 icmptype = returnicmp6default >> 8; 3182 $$ = (icmptype << 8 | $1); 3183 } 3184 ; 3185 3186 dir : /* empty */ { $$ = PF_INOUT; } 3187 | IN { $$ = PF_IN; } 3188 | OUT { $$ = PF_OUT; } 3189 ; 3190 3191 quick : /* empty */ { $$.quick = 0; } 3192 | QUICK { $$.quick = 1; } 3193 ; 3194 3195 logquick : /* empty */ { $$.log = 0; $$.quick = 0; $$.logif = 0; } 3196 | log { $$ = $1; $$.quick = 0; } 3197 | QUICK { $$.quick = 1; $$.log = 0; $$.logif = 0; } 3198 | log QUICK { $$ = $1; $$.quick = 1; } 3199 | QUICK log { $$ = $2; $$.quick = 1; } 3200 ; 3201 3202 log : LOG { $$.log = PF_LOG; $$.logif = 0; } 3203 | LOG '(' logopts ')' { 3204 $$.log = PF_LOG | $3.log; 3205 $$.logif = $3.logif; 3206 } 3207 ; 3208 3209 logopts : logopt { $$ = $1; } 3210 | logopts comma logopt { 3211 $$.log = $1.log | $3.log; 3212 $$.logif = $3.logif; 3213 if ($$.logif == 0) 3214 $$.logif = $1.logif; 3215 } 3216 ; 3217 3218 logopt : ALL { $$.log = PF_LOG_ALL; $$.logif = 0; } 3219 | MATCHES { $$.log = PF_LOG_MATCHES; $$.logif = 0; } 3220 | USER { $$.log = PF_LOG_SOCKET_LOOKUP; $$.logif = 0; } 3221 | GROUP { $$.log = PF_LOG_SOCKET_LOOKUP; $$.logif = 0; } 3222 | TO string { 3223 const char *errstr; 3224 u_int i; 3225 3226 $$.log = 0; 3227 if (strncmp($2, "pflog", 5)) { 3228 yyerror("%s: should be a pflog interface", $2); 3229 free($2); 3230 YYERROR; 3231 } 3232 i = strtonum($2 + 5, 0, 255, &errstr); 3233 if (errstr) { 3234 yyerror("%s: %s", $2, errstr); 3235 free($2); 3236 YYERROR; 3237 } 3238 free($2); 3239 $$.logif = i; 3240 } 3241 ; 3242 3243 interface : /* empty */ { $$ = NULL; } 3244 | ON if_item_not { $$ = $2; } 3245 | ON '{' optnl if_list '}' { $$ = $4; } 3246 ; 3247 3248 if_list : if_item_not optnl { $$ = $1; } 3249 | if_list comma if_item_not optnl { 3250 $1->tail->next = $3; 3251 $1->tail = $3; 3252 $$ = $1; 3253 } 3254 ; 3255 3256 if_item_not : not if_item { $$ = $2; $$->not = $1; } 3257 ; 3258 3259 if_item : STRING { 3260 struct node_host *n; 3261 3262 $$ = calloc(1, sizeof(struct node_if)); 3263 if ($$ == NULL) 3264 err(1, "if_item: calloc"); 3265 if (strlcpy($$->ifname, $1, sizeof($$->ifname)) >= 3266 sizeof($$->ifname)) { 3267 free($1); 3268 free($$); 3269 yyerror("interface name too long"); 3270 YYERROR; 3271 } 3272 3273 if ((n = ifa_exists($1)) != NULL) 3274 $$->ifa_flags = n->ifa_flags; 3275 3276 free($1); 3277 $$->not = 0; 3278 $$->next = NULL; 3279 $$->tail = $$; 3280 } 3281 | ANY { 3282 $$ = calloc(1, sizeof(struct node_if)); 3283 if ($$ == NULL) 3284 err(1, "if_item: calloc"); 3285 strlcpy($$->ifname, "any", sizeof($$->ifname)); 3286 $$->not = 0; 3287 $$->next = NULL; 3288 $$->tail = $$; 3289 } 3290 ; 3291 3292 af : /* empty */ { $$ = 0; } 3293 | INET { $$ = AF_INET; } 3294 | INET6 { $$ = AF_INET6; } 3295 ; 3296 3297 etherproto : /* empty */ { $$ = NULL; } 3298 | PROTO etherproto_item { $$ = $2; } 3299 | PROTO '{' optnl etherproto_list '}' { $$ = $4; } 3300 ; 3301 3302 etherproto_list : etherproto_item optnl { $$ = $1; } 3303 | etherproto_list comma etherproto_item optnl { 3304 $1->tail->next = $3; 3305 $1->tail = $3; 3306 $$ = $1; 3307 } 3308 ; 3309 3310 etherproto_item : etherprotoval { 3311 u_int16_t pr; 3312 3313 pr = (u_int16_t)$1; 3314 if (pr == 0) { 3315 yyerror("proto 0 cannot be used"); 3316 YYERROR; 3317 } 3318 $$ = calloc(1, sizeof(struct node_proto)); 3319 if ($$ == NULL) 3320 err(1, "proto_item: calloc"); 3321 $$->proto = pr; 3322 $$->next = NULL; 3323 $$->tail = $$; 3324 } 3325 ; 3326 3327 etherprotoval : NUMBER { 3328 if ($1 < 0 || $1 > 65565) { 3329 yyerror("protocol outside range"); 3330 YYERROR; 3331 } 3332 } 3333 | STRING 3334 { 3335 if (!strncmp($1, "0x", 2)) { 3336 if (sscanf($1, "0x%4x", &$$) != 1) { 3337 free($1); 3338 yyerror("invalid EtherType hex"); 3339 YYERROR; 3340 } 3341 } else { 3342 yyerror("Symbolic EtherType not yet supported"); 3343 } 3344 } 3345 ; 3346 3347 proto : /* empty */ { $$ = NULL; } 3348 | PROTO proto_item { $$ = $2; } 3349 | PROTO '{' optnl proto_list '}' { $$ = $4; } 3350 ; 3351 3352 proto_list : proto_item optnl { $$ = $1; } 3353 | proto_list comma proto_item optnl { 3354 $1->tail->next = $3; 3355 $1->tail = $3; 3356 $$ = $1; 3357 } 3358 ; 3359 3360 proto_item : protoval { 3361 u_int8_t pr; 3362 3363 pr = (u_int8_t)$1; 3364 if (pr == 0) { 3365 yyerror("proto 0 cannot be used"); 3366 YYERROR; 3367 } 3368 $$ = calloc(1, sizeof(struct node_proto)); 3369 if ($$ == NULL) 3370 err(1, "proto_item: calloc"); 3371 $$->proto = pr; 3372 $$->next = NULL; 3373 $$->tail = $$; 3374 } 3375 ; 3376 3377 protoval : STRING { 3378 struct protoent *p; 3379 3380 p = getprotobyname($1); 3381 if (p == NULL) { 3382 yyerror("unknown protocol %s", $1); 3383 free($1); 3384 YYERROR; 3385 } 3386 $$ = p->p_proto; 3387 free($1); 3388 } 3389 | NUMBER { 3390 if ($1 < 0 || $1 > 255) { 3391 yyerror("protocol outside range"); 3392 YYERROR; 3393 } 3394 } 3395 ; 3396 3397 l3fromto : /* empty */ { 3398 bzero(&$$, sizeof($$)); 3399 } 3400 | L3 fromto { 3401 if ($2.src.host != NULL && 3402 $2.src.host->addr.type != PF_ADDR_ADDRMASK && 3403 $2.src.host->addr.type != PF_ADDR_TABLE) { 3404 yyerror("from must be an address or table"); 3405 YYERROR; 3406 } 3407 if ($2.dst.host != NULL && 3408 $2.dst.host->addr.type != PF_ADDR_ADDRMASK && 3409 $2.dst.host->addr.type != PF_ADDR_TABLE) { 3410 yyerror("to must be an address or table"); 3411 YYERROR; 3412 } 3413 $$ = $2; 3414 } 3415 ; 3416 etherfromto : ALL { 3417 $$.src = NULL; 3418 $$.dst = NULL; 3419 } 3420 | etherfrom etherto { 3421 $$.src = $1.mac; 3422 $$.dst = $2.mac; 3423 } 3424 ; 3425 3426 etherfrom : /* emtpy */ { 3427 bzero(&$$, sizeof($$)); 3428 } 3429 | FROM macspec { 3430 $$.mac = $2; 3431 } 3432 ; 3433 3434 etherto : /* empty */ { 3435 bzero(&$$, sizeof($$)); 3436 } 3437 | TO macspec { 3438 $$.mac = $2; 3439 } 3440 ; 3441 3442 mac : string '/' NUMBER { 3443 $$ = node_mac_from_string_masklen($1, $3); 3444 free($1); 3445 if ($$ == NULL) 3446 YYERROR; 3447 } 3448 | string { 3449 if (strchr($1, '&')) { 3450 /* mac&mask */ 3451 char *mac = strtok($1, "&"); 3452 char *mask = strtok(NULL, "&"); 3453 $$ = node_mac_from_string_mask(mac, mask); 3454 } else { 3455 $$ = node_mac_from_string($1); 3456 } 3457 free($1); 3458 if ($$ == NULL) 3459 YYERROR; 3460 3461 } 3462 xmac : not mac { 3463 struct node_mac *n; 3464 3465 for (n = $2; n != NULL; n = n->next) 3466 n->neg = $1; 3467 $$ = $2; 3468 } 3469 ; 3470 macspec : xmac { 3471 $$ = $1; 3472 } 3473 | '{' optnl mac_list '}' 3474 { 3475 $$ = $3; 3476 } 3477 ; 3478 mac_list : xmac optnl { 3479 $$ = $1; 3480 } 3481 | mac_list comma xmac { 3482 if ($3 == NULL) 3483 $$ = $1; 3484 else if ($1 == NULL) 3485 $$ = $3; 3486 else { 3487 $1->tail->next = $3; 3488 $1->tail = $3->tail; 3489 $$ = $1; 3490 } 3491 } 3492 3493 fromto : ALL { 3494 $$.src.host = NULL; 3495 $$.src.port = NULL; 3496 $$.dst.host = NULL; 3497 $$.dst.port = NULL; 3498 $$.src_os = NULL; 3499 } 3500 | from os to { 3501 $$.src = $1; 3502 $$.src_os = $2; 3503 $$.dst = $3; 3504 } 3505 ; 3506 3507 os : /* empty */ { $$ = NULL; } 3508 | OS xos { $$ = $2; } 3509 | OS '{' optnl os_list '}' { $$ = $4; } 3510 ; 3511 3512 xos : STRING { 3513 $$ = calloc(1, sizeof(struct node_os)); 3514 if ($$ == NULL) 3515 err(1, "os: calloc"); 3516 $$->os = $1; 3517 $$->tail = $$; 3518 } 3519 ; 3520 3521 os_list : xos optnl { $$ = $1; } 3522 | os_list comma xos optnl { 3523 $1->tail->next = $3; 3524 $1->tail = $3; 3525 $$ = $1; 3526 } 3527 ; 3528 3529 from : /* empty */ { 3530 $$.host = NULL; 3531 $$.port = NULL; 3532 } 3533 | FROM ipportspec { 3534 $$ = $2; 3535 } 3536 ; 3537 3538 to : /* empty */ { 3539 $$.host = NULL; 3540 $$.port = NULL; 3541 } 3542 | TO ipportspec { 3543 if (disallow_urpf_failed($2.host, "\"urpf-failed\" is " 3544 "not permitted in a destination address")) 3545 YYERROR; 3546 $$ = $2; 3547 } 3548 ; 3549 3550 ipportspec : ipspec { 3551 $$.host = $1; 3552 $$.port = NULL; 3553 } 3554 | ipspec PORT portspec { 3555 $$.host = $1; 3556 $$.port = $3; 3557 } 3558 | PORT portspec { 3559 $$.host = NULL; 3560 $$.port = $2; 3561 } 3562 ; 3563 3564 optnl : '\n' optnl 3565 | 3566 ; 3567 3568 ipspec : ANY { $$ = NULL; } 3569 | xhost { $$ = $1; } 3570 | '{' optnl host_list '}' { $$ = $3; } 3571 ; 3572 3573 toipspec : TO ipspec { $$ = $2; } 3574 | /* empty */ { $$ = NULL; } 3575 ; 3576 3577 host_list : ipspec optnl { $$ = $1; } 3578 | host_list comma ipspec optnl { 3579 if ($1 == NULL) { 3580 freehostlist($3); 3581 $$ = $1; 3582 } else if ($3 == NULL) { 3583 freehostlist($1); 3584 $$ = $3; 3585 } else { 3586 $1->tail->next = $3; 3587 $1->tail = $3->tail; 3588 $$ = $1; 3589 } 3590 } 3591 ; 3592 3593 xhost : not host { 3594 struct node_host *n; 3595 3596 for (n = $2; n != NULL; n = n->next) 3597 n->not = $1; 3598 $$ = $2; 3599 } 3600 | not NOROUTE { 3601 $$ = calloc(1, sizeof(struct node_host)); 3602 if ($$ == NULL) 3603 err(1, "xhost: calloc"); 3604 $$->addr.type = PF_ADDR_NOROUTE; 3605 $$->next = NULL; 3606 $$->not = $1; 3607 $$->tail = $$; 3608 } 3609 | not URPFFAILED { 3610 $$ = calloc(1, sizeof(struct node_host)); 3611 if ($$ == NULL) 3612 err(1, "xhost: calloc"); 3613 $$->addr.type = PF_ADDR_URPFFAILED; 3614 $$->next = NULL; 3615 $$->not = $1; 3616 $$->tail = $$; 3617 } 3618 ; 3619 3620 host : STRING { 3621 if (($$ = host($1, pf->opts)) == NULL) { 3622 /* error. "any" is handled elsewhere */ 3623 free($1); 3624 yyerror("could not parse host specification"); 3625 YYERROR; 3626 } 3627 free($1); 3628 3629 } 3630 | STRING '-' STRING { 3631 struct node_host *b, *e; 3632 3633 if ((b = host($1, pf->opts)) == NULL || 3634 (e = host($3, pf->opts)) == NULL) { 3635 free($1); 3636 free($3); 3637 yyerror("could not parse host specification"); 3638 YYERROR; 3639 } 3640 if (b->af != e->af || 3641 b->addr.type != PF_ADDR_ADDRMASK || 3642 e->addr.type != PF_ADDR_ADDRMASK || 3643 unmask(&b->addr.v.a.mask) != 3644 (b->af == AF_INET ? 32 : 128) || 3645 unmask(&e->addr.v.a.mask) != 3646 (e->af == AF_INET ? 32 : 128) || 3647 b->next != NULL || b->not || 3648 e->next != NULL || e->not) { 3649 free(b); 3650 free(e); 3651 free($1); 3652 free($3); 3653 yyerror("invalid address range"); 3654 YYERROR; 3655 } 3656 memcpy(&b->addr.v.a.mask, &e->addr.v.a.addr, 3657 sizeof(b->addr.v.a.mask)); 3658 b->addr.type = PF_ADDR_RANGE; 3659 $$ = b; 3660 free(e); 3661 free($1); 3662 free($3); 3663 } 3664 | STRING '/' NUMBER { 3665 char *buf; 3666 3667 if (asprintf(&buf, "%s/%lld", $1, (long long)$3) == -1) 3668 err(1, "host: asprintf"); 3669 free($1); 3670 if (($$ = host(buf, pf->opts)) == NULL) { 3671 /* error. "any" is handled elsewhere */ 3672 free(buf); 3673 yyerror("could not parse host specification"); 3674 YYERROR; 3675 } 3676 free(buf); 3677 } 3678 | NUMBER '/' NUMBER { 3679 char *buf; 3680 3681 /* ie. for 10/8 parsing */ 3682 #ifdef __FreeBSD__ 3683 if (asprintf(&buf, "%lld/%lld", (long long)$1, (long long)$3) == -1) 3684 #else 3685 if (asprintf(&buf, "%lld/%lld", $1, $3) == -1) 3686 #endif 3687 err(1, "host: asprintf"); 3688 if (($$ = host(buf, pf->opts)) == NULL) { 3689 /* error. "any" is handled elsewhere */ 3690 free(buf); 3691 yyerror("could not parse host specification"); 3692 YYERROR; 3693 } 3694 free(buf); 3695 } 3696 | dynaddr 3697 | dynaddr '/' NUMBER { 3698 struct node_host *n; 3699 3700 if ($3 < 0 || $3 > 128) { 3701 yyerror("bit number too big"); 3702 YYERROR; 3703 } 3704 $$ = $1; 3705 for (n = $1; n != NULL; n = n->next) 3706 set_ipmask(n, $3); 3707 } 3708 | '<' STRING '>' { 3709 if (strlen($2) >= PF_TABLE_NAME_SIZE) { 3710 yyerror("table name '%s' too long", $2); 3711 free($2); 3712 YYERROR; 3713 } 3714 $$ = calloc(1, sizeof(struct node_host)); 3715 if ($$ == NULL) 3716 err(1, "host: calloc"); 3717 $$->addr.type = PF_ADDR_TABLE; 3718 if (strlcpy($$->addr.v.tblname, $2, 3719 sizeof($$->addr.v.tblname)) >= 3720 sizeof($$->addr.v.tblname)) 3721 errx(1, "host: strlcpy"); 3722 free($2); 3723 $$->next = NULL; 3724 $$->tail = $$; 3725 } 3726 ; 3727 3728 number : NUMBER 3729 | STRING { 3730 u_long ulval; 3731 3732 if (atoul($1, &ulval) == -1) { 3733 yyerror("%s is not a number", $1); 3734 free($1); 3735 YYERROR; 3736 } else 3737 $$ = ulval; 3738 free($1); 3739 } 3740 ; 3741 3742 dynaddr : '(' STRING ')' { 3743 int flags = 0; 3744 char *p, *op; 3745 3746 op = $2; 3747 if (!isalpha(op[0])) { 3748 yyerror("invalid interface name '%s'", op); 3749 free(op); 3750 YYERROR; 3751 } 3752 while ((p = strrchr($2, ':')) != NULL) { 3753 if (!strcmp(p+1, "network")) 3754 flags |= PFI_AFLAG_NETWORK; 3755 else if (!strcmp(p+1, "broadcast")) 3756 flags |= PFI_AFLAG_BROADCAST; 3757 else if (!strcmp(p+1, "peer")) 3758 flags |= PFI_AFLAG_PEER; 3759 else if (!strcmp(p+1, "0")) 3760 flags |= PFI_AFLAG_NOALIAS; 3761 else { 3762 yyerror("interface %s has bad modifier", 3763 $2); 3764 free(op); 3765 YYERROR; 3766 } 3767 *p = '\0'; 3768 } 3769 if (flags & (flags - 1) & PFI_AFLAG_MODEMASK) { 3770 free(op); 3771 yyerror("illegal combination of " 3772 "interface modifiers"); 3773 YYERROR; 3774 } 3775 $$ = calloc(1, sizeof(struct node_host)); 3776 if ($$ == NULL) 3777 err(1, "address: calloc"); 3778 $$->af = 0; 3779 set_ipmask($$, 128); 3780 $$->addr.type = PF_ADDR_DYNIFTL; 3781 $$->addr.iflags = flags; 3782 if (strlcpy($$->addr.v.ifname, $2, 3783 sizeof($$->addr.v.ifname)) >= 3784 sizeof($$->addr.v.ifname)) { 3785 free(op); 3786 free($$); 3787 yyerror("interface name too long"); 3788 YYERROR; 3789 } 3790 free(op); 3791 $$->next = NULL; 3792 $$->tail = $$; 3793 } 3794 ; 3795 3796 portspec : port_item { $$ = $1; } 3797 | '{' optnl port_list '}' { $$ = $3; } 3798 ; 3799 3800 port_list : port_item optnl { $$ = $1; } 3801 | port_list comma port_item optnl { 3802 $1->tail->next = $3; 3803 $1->tail = $3; 3804 $$ = $1; 3805 } 3806 ; 3807 3808 port_item : portrange { 3809 $$ = calloc(1, sizeof(struct node_port)); 3810 if ($$ == NULL) 3811 err(1, "port_item: calloc"); 3812 $$->port[0] = $1.a; 3813 $$->port[1] = $1.b; 3814 if ($1.t) 3815 $$->op = PF_OP_RRG; 3816 else 3817 $$->op = PF_OP_EQ; 3818 $$->next = NULL; 3819 $$->tail = $$; 3820 } 3821 | unaryop portrange { 3822 if ($2.t) { 3823 yyerror("':' cannot be used with an other " 3824 "port operator"); 3825 YYERROR; 3826 } 3827 $$ = calloc(1, sizeof(struct node_port)); 3828 if ($$ == NULL) 3829 err(1, "port_item: calloc"); 3830 $$->port[0] = $2.a; 3831 $$->port[1] = $2.b; 3832 $$->op = $1; 3833 $$->next = NULL; 3834 $$->tail = $$; 3835 } 3836 | portrange PORTBINARY portrange { 3837 if ($1.t || $3.t) { 3838 yyerror("':' cannot be used with an other " 3839 "port operator"); 3840 YYERROR; 3841 } 3842 $$ = calloc(1, sizeof(struct node_port)); 3843 if ($$ == NULL) 3844 err(1, "port_item: calloc"); 3845 $$->port[0] = $1.a; 3846 $$->port[1] = $3.a; 3847 $$->op = $2; 3848 $$->next = NULL; 3849 $$->tail = $$; 3850 } 3851 ; 3852 3853 portplain : numberstring { 3854 if (parseport($1, &$$, 0) == -1) { 3855 free($1); 3856 YYERROR; 3857 } 3858 free($1); 3859 } 3860 ; 3861 3862 portrange : numberstring { 3863 if (parseport($1, &$$, PPORT_RANGE) == -1) { 3864 free($1); 3865 YYERROR; 3866 } 3867 free($1); 3868 } 3869 ; 3870 3871 uids : uid_item { $$ = $1; } 3872 | '{' optnl uid_list '}' { $$ = $3; } 3873 ; 3874 3875 uid_list : uid_item optnl { $$ = $1; } 3876 | uid_list comma uid_item optnl { 3877 $1->tail->next = $3; 3878 $1->tail = $3; 3879 $$ = $1; 3880 } 3881 ; 3882 3883 uid_item : uid { 3884 $$ = calloc(1, sizeof(struct node_uid)); 3885 if ($$ == NULL) 3886 err(1, "uid_item: calloc"); 3887 $$->uid[0] = $1; 3888 $$->uid[1] = $1; 3889 $$->op = PF_OP_EQ; 3890 $$->next = NULL; 3891 $$->tail = $$; 3892 } 3893 | unaryop uid { 3894 if ($2 == UID_MAX && $1 != PF_OP_EQ && $1 != PF_OP_NE) { 3895 yyerror("user unknown requires operator = or " 3896 "!="); 3897 YYERROR; 3898 } 3899 $$ = calloc(1, sizeof(struct node_uid)); 3900 if ($$ == NULL) 3901 err(1, "uid_item: calloc"); 3902 $$->uid[0] = $2; 3903 $$->uid[1] = $2; 3904 $$->op = $1; 3905 $$->next = NULL; 3906 $$->tail = $$; 3907 } 3908 | uid PORTBINARY uid { 3909 if ($1 == UID_MAX || $3 == UID_MAX) { 3910 yyerror("user unknown requires operator = or " 3911 "!="); 3912 YYERROR; 3913 } 3914 $$ = calloc(1, sizeof(struct node_uid)); 3915 if ($$ == NULL) 3916 err(1, "uid_item: calloc"); 3917 $$->uid[0] = $1; 3918 $$->uid[1] = $3; 3919 $$->op = $2; 3920 $$->next = NULL; 3921 $$->tail = $$; 3922 } 3923 ; 3924 3925 uid : STRING { 3926 if (!strcmp($1, "unknown")) 3927 $$ = UID_MAX; 3928 else { 3929 uid_t uid; 3930 3931 if (uid_from_user($1, &uid) == -1) { 3932 yyerror("unknown user %s", $1); 3933 free($1); 3934 YYERROR; 3935 } 3936 $$ = uid; 3937 } 3938 free($1); 3939 } 3940 | NUMBER { 3941 if ($1 < 0 || $1 >= UID_MAX) { 3942 yyerror("illegal uid value %lu", $1); 3943 YYERROR; 3944 } 3945 $$ = $1; 3946 } 3947 ; 3948 3949 gids : gid_item { $$ = $1; } 3950 | '{' optnl gid_list '}' { $$ = $3; } 3951 ; 3952 3953 gid_list : gid_item optnl { $$ = $1; } 3954 | gid_list comma gid_item optnl { 3955 $1->tail->next = $3; 3956 $1->tail = $3; 3957 $$ = $1; 3958 } 3959 ; 3960 3961 gid_item : gid { 3962 $$ = calloc(1, sizeof(struct node_gid)); 3963 if ($$ == NULL) 3964 err(1, "gid_item: calloc"); 3965 $$->gid[0] = $1; 3966 $$->gid[1] = $1; 3967 $$->op = PF_OP_EQ; 3968 $$->next = NULL; 3969 $$->tail = $$; 3970 } 3971 | unaryop gid { 3972 if ($2 == GID_MAX && $1 != PF_OP_EQ && $1 != PF_OP_NE) { 3973 yyerror("group unknown requires operator = or " 3974 "!="); 3975 YYERROR; 3976 } 3977 $$ = calloc(1, sizeof(struct node_gid)); 3978 if ($$ == NULL) 3979 err(1, "gid_item: calloc"); 3980 $$->gid[0] = $2; 3981 $$->gid[1] = $2; 3982 $$->op = $1; 3983 $$->next = NULL; 3984 $$->tail = $$; 3985 } 3986 | gid PORTBINARY gid { 3987 if ($1 == GID_MAX || $3 == GID_MAX) { 3988 yyerror("group unknown requires operator = or " 3989 "!="); 3990 YYERROR; 3991 } 3992 $$ = calloc(1, sizeof(struct node_gid)); 3993 if ($$ == NULL) 3994 err(1, "gid_item: calloc"); 3995 $$->gid[0] = $1; 3996 $$->gid[1] = $3; 3997 $$->op = $2; 3998 $$->next = NULL; 3999 $$->tail = $$; 4000 } 4001 ; 4002 4003 gid : STRING { 4004 if (!strcmp($1, "unknown")) 4005 $$ = GID_MAX; 4006 else { 4007 gid_t gid; 4008 4009 if (gid_from_group($1, &gid) == -1) { 4010 yyerror("unknown group %s", $1); 4011 free($1); 4012 YYERROR; 4013 } 4014 $$ = gid; 4015 } 4016 free($1); 4017 } 4018 | NUMBER { 4019 if ($1 < 0 || $1 >= GID_MAX) { 4020 yyerror("illegal gid value %lu", $1); 4021 YYERROR; 4022 } 4023 $$ = $1; 4024 } 4025 ; 4026 4027 flag : STRING { 4028 int f; 4029 4030 if ((f = parse_flags($1)) < 0) { 4031 yyerror("bad flags %s", $1); 4032 free($1); 4033 YYERROR; 4034 } 4035 free($1); 4036 $$.b1 = f; 4037 } 4038 ; 4039 4040 flags : FLAGS flag '/' flag { $$.b1 = $2.b1; $$.b2 = $4.b1; } 4041 | FLAGS '/' flag { $$.b1 = 0; $$.b2 = $3.b1; } 4042 | FLAGS ANY { $$.b1 = 0; $$.b2 = 0; } 4043 ; 4044 4045 icmpspec : ICMPTYPE icmp_item { $$ = $2; } 4046 | ICMPTYPE '{' optnl icmp_list '}' { $$ = $4; } 4047 | ICMP6TYPE icmp6_item { $$ = $2; } 4048 | ICMP6TYPE '{' optnl icmp6_list '}' { $$ = $4; } 4049 ; 4050 4051 icmp_list : icmp_item optnl { $$ = $1; } 4052 | icmp_list comma icmp_item optnl { 4053 $1->tail->next = $3; 4054 $1->tail = $3; 4055 $$ = $1; 4056 } 4057 ; 4058 4059 icmp6_list : icmp6_item optnl { $$ = $1; } 4060 | icmp6_list comma icmp6_item optnl { 4061 $1->tail->next = $3; 4062 $1->tail = $3; 4063 $$ = $1; 4064 } 4065 ; 4066 4067 icmp_item : icmptype { 4068 $$ = calloc(1, sizeof(struct node_icmp)); 4069 if ($$ == NULL) 4070 err(1, "icmp_item: calloc"); 4071 $$->type = $1; 4072 $$->code = 0; 4073 $$->proto = IPPROTO_ICMP; 4074 $$->next = NULL; 4075 $$->tail = $$; 4076 } 4077 | icmptype CODE STRING { 4078 const struct icmpcodeent *p; 4079 4080 if ((p = geticmpcodebyname($1-1, $3, AF_INET)) == NULL) { 4081 yyerror("unknown icmp-code %s", $3); 4082 free($3); 4083 YYERROR; 4084 } 4085 4086 free($3); 4087 $$ = calloc(1, sizeof(struct node_icmp)); 4088 if ($$ == NULL) 4089 err(1, "icmp_item: calloc"); 4090 $$->type = $1; 4091 $$->code = p->code + 1; 4092 $$->proto = IPPROTO_ICMP; 4093 $$->next = NULL; 4094 $$->tail = $$; 4095 } 4096 | icmptype CODE NUMBER { 4097 if ($3 < 0 || $3 > 255) { 4098 yyerror("illegal icmp-code %lu", $3); 4099 YYERROR; 4100 } 4101 $$ = calloc(1, sizeof(struct node_icmp)); 4102 if ($$ == NULL) 4103 err(1, "icmp_item: calloc"); 4104 $$->type = $1; 4105 $$->code = $3 + 1; 4106 $$->proto = IPPROTO_ICMP; 4107 $$->next = NULL; 4108 $$->tail = $$; 4109 } 4110 ; 4111 4112 icmp6_item : icmp6type { 4113 $$ = calloc(1, sizeof(struct node_icmp)); 4114 if ($$ == NULL) 4115 err(1, "icmp_item: calloc"); 4116 $$->type = $1; 4117 $$->code = 0; 4118 $$->proto = IPPROTO_ICMPV6; 4119 $$->next = NULL; 4120 $$->tail = $$; 4121 } 4122 | icmp6type CODE STRING { 4123 const struct icmpcodeent *p; 4124 4125 if ((p = geticmpcodebyname($1-1, $3, AF_INET6)) == NULL) { 4126 yyerror("unknown icmp6-code %s", $3); 4127 free($3); 4128 YYERROR; 4129 } 4130 free($3); 4131 4132 $$ = calloc(1, sizeof(struct node_icmp)); 4133 if ($$ == NULL) 4134 err(1, "icmp_item: calloc"); 4135 $$->type = $1; 4136 $$->code = p->code + 1; 4137 $$->proto = IPPROTO_ICMPV6; 4138 $$->next = NULL; 4139 $$->tail = $$; 4140 } 4141 | icmp6type CODE NUMBER { 4142 if ($3 < 0 || $3 > 255) { 4143 yyerror("illegal icmp-code %lu", $3); 4144 YYERROR; 4145 } 4146 $$ = calloc(1, sizeof(struct node_icmp)); 4147 if ($$ == NULL) 4148 err(1, "icmp_item: calloc"); 4149 $$->type = $1; 4150 $$->code = $3 + 1; 4151 $$->proto = IPPROTO_ICMPV6; 4152 $$->next = NULL; 4153 $$->tail = $$; 4154 } 4155 ; 4156 4157 icmptype : STRING { 4158 const struct icmptypeent *p; 4159 4160 if ((p = geticmptypebyname($1, AF_INET)) == NULL) { 4161 yyerror("unknown icmp-type %s", $1); 4162 free($1); 4163 YYERROR; 4164 } 4165 $$ = p->type + 1; 4166 free($1); 4167 } 4168 | NUMBER { 4169 if ($1 < 0 || $1 > 255) { 4170 yyerror("illegal icmp-type %lu", $1); 4171 YYERROR; 4172 } 4173 $$ = $1 + 1; 4174 } 4175 ; 4176 4177 icmp6type : STRING { 4178 const struct icmptypeent *p; 4179 4180 if ((p = geticmptypebyname($1, AF_INET6)) == 4181 NULL) { 4182 yyerror("unknown icmp6-type %s", $1); 4183 free($1); 4184 YYERROR; 4185 } 4186 $$ = p->type + 1; 4187 free($1); 4188 } 4189 | NUMBER { 4190 if ($1 < 0 || $1 > 255) { 4191 yyerror("illegal icmp6-type %lu", $1); 4192 YYERROR; 4193 } 4194 $$ = $1 + 1; 4195 } 4196 ; 4197 4198 tos : STRING { 4199 int val; 4200 char *end; 4201 4202 if (map_tos($1, &val)) 4203 $$ = val; 4204 else if ($1[0] == '0' && $1[1] == 'x') { 4205 errno = 0; 4206 $$ = strtoul($1, &end, 16); 4207 if (errno || *end != '\0') 4208 $$ = 256; 4209 } else 4210 $$ = 256; /* flag bad argument */ 4211 if ($$ < 0 || $$ > 255) { 4212 yyerror("illegal tos value %s", $1); 4213 free($1); 4214 YYERROR; 4215 } 4216 free($1); 4217 } 4218 | NUMBER { 4219 $$ = $1; 4220 if ($$ < 0 || $$ > 255) { 4221 yyerror("illegal tos value %lu", $1); 4222 YYERROR; 4223 } 4224 } 4225 ; 4226 4227 sourcetrack : SOURCETRACK { $$ = PF_SRCTRACK; } 4228 | SOURCETRACK GLOBAL { $$ = PF_SRCTRACK_GLOBAL; } 4229 | SOURCETRACK RULE { $$ = PF_SRCTRACK_RULE; } 4230 ; 4231 4232 statelock : IFBOUND { 4233 $$ = PFRULE_IFBOUND; 4234 } 4235 | FLOATING { 4236 $$ = 0; 4237 } 4238 ; 4239 4240 keep : NO STATE { 4241 $$.action = 0; 4242 $$.options = NULL; 4243 } 4244 | KEEP STATE state_opt_spec { 4245 $$.action = PF_STATE_NORMAL; 4246 $$.options = $3; 4247 } 4248 | MODULATE STATE state_opt_spec { 4249 $$.action = PF_STATE_MODULATE; 4250 $$.options = $3; 4251 } 4252 | SYNPROXY STATE state_opt_spec { 4253 $$.action = PF_STATE_SYNPROXY; 4254 $$.options = $3; 4255 } 4256 ; 4257 4258 flush : /* empty */ { $$ = 0; } 4259 | FLUSH { $$ = PF_FLUSH; } 4260 | FLUSH GLOBAL { 4261 $$ = PF_FLUSH | PF_FLUSH_GLOBAL; 4262 } 4263 ; 4264 4265 state_opt_spec : '(' state_opt_list ')' { $$ = $2; } 4266 | /* empty */ { $$ = NULL; } 4267 ; 4268 4269 state_opt_list : state_opt_item { $$ = $1; } 4270 | state_opt_list comma state_opt_item { 4271 $1->tail->next = $3; 4272 $1->tail = $3; 4273 $$ = $1; 4274 } 4275 ; 4276 4277 state_opt_item : MAXIMUM NUMBER { 4278 if ($2 < 0 || $2 > UINT_MAX) { 4279 yyerror("only positive values permitted"); 4280 YYERROR; 4281 } 4282 $$ = calloc(1, sizeof(struct node_state_opt)); 4283 if ($$ == NULL) 4284 err(1, "state_opt_item: calloc"); 4285 $$->type = PF_STATE_OPT_MAX; 4286 $$->data.max_states = $2; 4287 $$->next = NULL; 4288 $$->tail = $$; 4289 } 4290 | NOSYNC { 4291 $$ = calloc(1, sizeof(struct node_state_opt)); 4292 if ($$ == NULL) 4293 err(1, "state_opt_item: calloc"); 4294 $$->type = PF_STATE_OPT_NOSYNC; 4295 $$->next = NULL; 4296 $$->tail = $$; 4297 } 4298 | MAXSRCSTATES NUMBER { 4299 if ($2 < 0 || $2 > UINT_MAX) { 4300 yyerror("only positive values permitted"); 4301 YYERROR; 4302 } 4303 $$ = calloc(1, sizeof(struct node_state_opt)); 4304 if ($$ == NULL) 4305 err(1, "state_opt_item: calloc"); 4306 $$->type = PF_STATE_OPT_MAX_SRC_STATES; 4307 $$->data.max_src_states = $2; 4308 $$->next = NULL; 4309 $$->tail = $$; 4310 } 4311 | MAXSRCCONN NUMBER { 4312 if ($2 < 0 || $2 > UINT_MAX) { 4313 yyerror("only positive values permitted"); 4314 YYERROR; 4315 } 4316 $$ = calloc(1, sizeof(struct node_state_opt)); 4317 if ($$ == NULL) 4318 err(1, "state_opt_item: calloc"); 4319 $$->type = PF_STATE_OPT_MAX_SRC_CONN; 4320 $$->data.max_src_conn = $2; 4321 $$->next = NULL; 4322 $$->tail = $$; 4323 } 4324 | MAXSRCCONNRATE NUMBER '/' NUMBER { 4325 if ($2 < 0 || $2 > UINT_MAX || 4326 $4 < 0 || $4 > UINT_MAX) { 4327 yyerror("only positive values permitted"); 4328 YYERROR; 4329 } 4330 $$ = calloc(1, sizeof(struct node_state_opt)); 4331 if ($$ == NULL) 4332 err(1, "state_opt_item: calloc"); 4333 $$->type = PF_STATE_OPT_MAX_SRC_CONN_RATE; 4334 $$->data.max_src_conn_rate.limit = $2; 4335 $$->data.max_src_conn_rate.seconds = $4; 4336 $$->next = NULL; 4337 $$->tail = $$; 4338 } 4339 | OVERLOAD '<' STRING '>' flush { 4340 if (strlen($3) >= PF_TABLE_NAME_SIZE) { 4341 yyerror("table name '%s' too long", $3); 4342 free($3); 4343 YYERROR; 4344 } 4345 $$ = calloc(1, sizeof(struct node_state_opt)); 4346 if ($$ == NULL) 4347 err(1, "state_opt_item: calloc"); 4348 if (strlcpy($$->data.overload.tblname, $3, 4349 PF_TABLE_NAME_SIZE) >= PF_TABLE_NAME_SIZE) 4350 errx(1, "state_opt_item: strlcpy"); 4351 free($3); 4352 $$->type = PF_STATE_OPT_OVERLOAD; 4353 $$->data.overload.flush = $5; 4354 $$->next = NULL; 4355 $$->tail = $$; 4356 } 4357 | MAXSRCNODES NUMBER { 4358 if ($2 < 0 || $2 > UINT_MAX) { 4359 yyerror("only positive values permitted"); 4360 YYERROR; 4361 } 4362 $$ = calloc(1, sizeof(struct node_state_opt)); 4363 if ($$ == NULL) 4364 err(1, "state_opt_item: calloc"); 4365 $$->type = PF_STATE_OPT_MAX_SRC_NODES; 4366 $$->data.max_src_nodes = $2; 4367 $$->next = NULL; 4368 $$->tail = $$; 4369 } 4370 | sourcetrack { 4371 $$ = calloc(1, sizeof(struct node_state_opt)); 4372 if ($$ == NULL) 4373 err(1, "state_opt_item: calloc"); 4374 $$->type = PF_STATE_OPT_SRCTRACK; 4375 $$->data.src_track = $1; 4376 $$->next = NULL; 4377 $$->tail = $$; 4378 } 4379 | statelock { 4380 $$ = calloc(1, sizeof(struct node_state_opt)); 4381 if ($$ == NULL) 4382 err(1, "state_opt_item: calloc"); 4383 $$->type = PF_STATE_OPT_STATELOCK; 4384 $$->data.statelock = $1; 4385 $$->next = NULL; 4386 $$->tail = $$; 4387 } 4388 | SLOPPY { 4389 $$ = calloc(1, sizeof(struct node_state_opt)); 4390 if ($$ == NULL) 4391 err(1, "state_opt_item: calloc"); 4392 $$->type = PF_STATE_OPT_SLOPPY; 4393 $$->next = NULL; 4394 $$->tail = $$; 4395 } 4396 | PFLOW { 4397 $$ = calloc(1, sizeof(struct node_state_opt)); 4398 if ($$ == NULL) 4399 err(1, "state_opt_item: calloc"); 4400 $$->type = PF_STATE_OPT_PFLOW; 4401 $$->next = NULL; 4402 $$->tail = $$; 4403 } 4404 | ALLOW_RELATED { 4405 $$ = calloc(1, sizeof(struct node_state_opt)); 4406 if ($$ == NULL) 4407 err(1, "state_opt_item: calloc"); 4408 $$->type = PF_STATE_OPT_ALLOW_RELATED; 4409 $$->next = NULL; 4410 $$->tail = $$; 4411 } 4412 | STRING NUMBER { 4413 int i; 4414 4415 if ($2 < 0 || $2 > UINT_MAX) { 4416 yyerror("only positive values permitted"); 4417 YYERROR; 4418 } 4419 for (i = 0; pf_timeouts[i].name && 4420 strcmp(pf_timeouts[i].name, $1); ++i) 4421 ; /* nothing */ 4422 if (!pf_timeouts[i].name) { 4423 yyerror("illegal timeout name %s", $1); 4424 free($1); 4425 YYERROR; 4426 } 4427 if (strchr(pf_timeouts[i].name, '.') == NULL) { 4428 yyerror("illegal state timeout %s", $1); 4429 free($1); 4430 YYERROR; 4431 } 4432 free($1); 4433 $$ = calloc(1, sizeof(struct node_state_opt)); 4434 if ($$ == NULL) 4435 err(1, "state_opt_item: calloc"); 4436 $$->type = PF_STATE_OPT_TIMEOUT; 4437 $$->data.timeout.number = pf_timeouts[i].timeout; 4438 $$->data.timeout.seconds = $2; 4439 $$->next = NULL; 4440 $$->tail = $$; 4441 } 4442 ; 4443 4444 label : LABEL STRING { 4445 $$ = $2; 4446 } 4447 ; 4448 4449 etherqname : QUEUE STRING { 4450 $$.qname = $2; 4451 } 4452 | QUEUE '(' STRING ')' { 4453 $$.qname = $3; 4454 } 4455 ; 4456 4457 qname : QUEUE STRING { 4458 $$.qname = $2; 4459 $$.pqname = NULL; 4460 } 4461 | QUEUE '(' STRING ')' { 4462 $$.qname = $3; 4463 $$.pqname = NULL; 4464 } 4465 | QUEUE '(' STRING comma STRING ')' { 4466 $$.qname = $3; 4467 $$.pqname = $5; 4468 } 4469 ; 4470 4471 no : /* empty */ { $$ = 0; } 4472 | NO { $$ = 1; } 4473 ; 4474 4475 portstar : numberstring { 4476 if (parseport($1, &$$, PPORT_RANGE|PPORT_STAR) == -1) { 4477 free($1); 4478 YYERROR; 4479 } 4480 free($1); 4481 } 4482 ; 4483 4484 redir_host : host { $$ = $1; } 4485 | '{' optnl redir_host_list '}' { $$ = $3; } 4486 ; 4487 4488 redir_host_list : host optnl { $$ = $1; } 4489 | redir_host_list comma host optnl { 4490 $1->tail->next = $3; 4491 $1->tail = $3->tail; 4492 $$ = $1; 4493 } 4494 ; 4495 4496 /* Redirection without port */ 4497 no_port_redirspec: redir_host pool_opts { 4498 $$ = calloc(1, sizeof(struct redirspec)); 4499 if ($$ == NULL) 4500 err(1, "redirspec: calloc"); 4501 $$->host = $1; 4502 $$->pool_opts = $2; 4503 $$->rport.a = $$->rport.b = $$->rport.t = 0; 4504 } 4505 ; 4506 4507 /* Redirection with optional port */ 4508 port_redirspec : no_port_redirspec; 4509 | redir_host PORT portstar pool_opts { 4510 $$ = calloc(1, sizeof(struct redirspec)); 4511 if ($$ == NULL) 4512 err(1, "redirspec: calloc"); 4513 $$->host = $1; 4514 $$->rport = $3; 4515 $$->pool_opts = $4; 4516 } 4517 4518 /* Redirection with an arrow and an optional port: FreeBSD NAT rules */ 4519 nat_redirspec : /* empty */ { $$ = NULL; } 4520 | ARROW port_redirspec { 4521 $$ = $2; 4522 } 4523 ; 4524 4525 /* Redirection with interfaces and without ports: route-to rules */ 4526 route_redirspec : routespec pool_opts { 4527 $$ = calloc(1, sizeof(struct redirspec)); 4528 if ($$ == NULL) 4529 err(1, "redirspec: calloc"); 4530 $$->host = $1; 4531 $$->pool_opts = $2; 4532 } 4533 ; 4534 4535 hashkey : /* empty */ 4536 { 4537 $$ = calloc(1, sizeof(struct pf_poolhashkey)); 4538 if ($$ == NULL) 4539 err(1, "hashkey: calloc"); 4540 $$->key32[0] = arc4random(); 4541 $$->key32[1] = arc4random(); 4542 $$->key32[2] = arc4random(); 4543 $$->key32[3] = arc4random(); 4544 } 4545 | string 4546 { 4547 if (!strncmp($1, "0x", 2)) { 4548 if (strlen($1) != 34) { 4549 free($1); 4550 yyerror("hex key must be 128 bits " 4551 "(32 hex digits) long"); 4552 YYERROR; 4553 } 4554 $$ = calloc(1, sizeof(struct pf_poolhashkey)); 4555 if ($$ == NULL) 4556 err(1, "hashkey: calloc"); 4557 4558 if (sscanf($1, "0x%8x%8x%8x%8x", 4559 &$$->key32[0], &$$->key32[1], 4560 &$$->key32[2], &$$->key32[3]) != 4) { 4561 free($$); 4562 free($1); 4563 yyerror("invalid hex key"); 4564 YYERROR; 4565 } 4566 } else { 4567 MD5_CTX context; 4568 4569 $$ = calloc(1, sizeof(struct pf_poolhashkey)); 4570 if ($$ == NULL) 4571 err(1, "hashkey: calloc"); 4572 MD5Init(&context); 4573 MD5Update(&context, (unsigned char *)$1, 4574 strlen($1)); 4575 MD5Final((unsigned char *)$$, &context); 4576 HTONL($$->key32[0]); 4577 HTONL($$->key32[1]); 4578 HTONL($$->key32[2]); 4579 HTONL($$->key32[3]); 4580 } 4581 free($1); 4582 } 4583 ; 4584 4585 pool_opts : { bzero(&pool_opts, sizeof pool_opts); } 4586 pool_opts_l 4587 { $$ = pool_opts; } 4588 | /* empty */ { 4589 bzero(&pool_opts, sizeof pool_opts); 4590 $$ = pool_opts; 4591 } 4592 ; 4593 4594 pool_opts_l : pool_opts_l pool_opt 4595 | pool_opt 4596 ; 4597 4598 pool_opt : BITMASK { 4599 if (pool_opts.type) { 4600 yyerror("pool type cannot be redefined"); 4601 YYERROR; 4602 } 4603 pool_opts.type = PF_POOL_BITMASK; 4604 } 4605 | RANDOM { 4606 if (pool_opts.type) { 4607 yyerror("pool type cannot be redefined"); 4608 YYERROR; 4609 } 4610 pool_opts.type = PF_POOL_RANDOM; 4611 } 4612 | SOURCEHASH hashkey { 4613 if (pool_opts.type) { 4614 yyerror("pool type cannot be redefined"); 4615 YYERROR; 4616 } 4617 pool_opts.type = PF_POOL_SRCHASH; 4618 pool_opts.key = $2; 4619 } 4620 | ROUNDROBIN { 4621 if (pool_opts.type) { 4622 yyerror("pool type cannot be redefined"); 4623 YYERROR; 4624 } 4625 pool_opts.type = PF_POOL_ROUNDROBIN; 4626 } 4627 | STATICPORT { 4628 if (pool_opts.staticport) { 4629 yyerror("static-port cannot be redefined"); 4630 YYERROR; 4631 } 4632 pool_opts.staticport = 1; 4633 } 4634 | STICKYADDRESS { 4635 if (pool_opts.marker & POM_STICKYADDRESS) { 4636 yyerror("sticky-address cannot be redefined"); 4637 YYERROR; 4638 } 4639 pool_opts.marker |= POM_STICKYADDRESS; 4640 pool_opts.opts |= PF_POOL_STICKYADDR; 4641 } 4642 | ENDPI { 4643 if (pool_opts.marker & POM_ENDPI) { 4644 yyerror("endpoint-independent cannot be redefined"); 4645 YYERROR; 4646 } 4647 pool_opts.marker |= POM_ENDPI; 4648 pool_opts.opts |= PF_POOL_ENDPI; 4649 } 4650 | MAPEPORTSET number '/' number '/' number { 4651 if (pool_opts.mape.offset) { 4652 yyerror("map-e-portset cannot be redefined"); 4653 YYERROR; 4654 } 4655 if (pool_opts.type) { 4656 yyerror("map-e-portset cannot be used with " 4657 "address pools"); 4658 YYERROR; 4659 } 4660 if ($2 <= 0 || $2 >= 16) { 4661 yyerror("MAP-E PSID offset must be 1-15"); 4662 YYERROR; 4663 } 4664 if ($4 < 0 || $4 >= 16 || $2 + $4 > 16) { 4665 yyerror("Invalid MAP-E PSID length"); 4666 YYERROR; 4667 } else if ($4 == 0) { 4668 yyerror("PSID Length = 0: this means" 4669 " you do not need MAP-E"); 4670 YYERROR; 4671 } 4672 if ($6 < 0 || $6 > 65535) { 4673 yyerror("Invalid MAP-E PSID"); 4674 YYERROR; 4675 } 4676 pool_opts.mape.offset = $2; 4677 pool_opts.mape.psidlen = $4; 4678 pool_opts.mape.psid = $6; 4679 } 4680 ; 4681 4682 binat_redirspec : /* empty */ { $$ = NULL; } 4683 | ARROW host { 4684 $$ = calloc(1, sizeof(struct redirspec)); 4685 if ($$ == NULL) 4686 err(1, "redirspec: calloc"); 4687 $$->host = $2; 4688 $$->rport.a = $$->rport.b = $$->rport.t = 0; 4689 } 4690 | ARROW host PORT portstar { 4691 $$ = calloc(1, sizeof(struct redirspec)); 4692 if ($$ == NULL) 4693 err(1, "redirspec: calloc"); 4694 $$->host = $2; 4695 $$->rport = $4; 4696 } 4697 ; 4698 4699 natpasslog : /* empty */ { $$.b1 = $$.b2 = 0; $$.w2 = 0; } 4700 | PASS { $$.b1 = 1; $$.b2 = 0; $$.w2 = 0; } 4701 | PASS log { $$.b1 = 1; $$.b2 = $2.log; $$.w2 = $2.logif; } 4702 | log { $$.b1 = 0; $$.b2 = $1.log; $$.w2 = $1.logif; } 4703 ; 4704 4705 nataction : no NAT natpasslog { 4706 if ($1 && $3.b1) { 4707 yyerror("\"pass\" not valid with \"no\""); 4708 YYERROR; 4709 } 4710 if ($1) 4711 $$.b1 = PF_NONAT; 4712 else 4713 $$.b1 = PF_NAT; 4714 $$.b2 = $3.b1; 4715 $$.w = $3.b2; 4716 $$.w2 = $3.w2; 4717 } 4718 | no RDR natpasslog { 4719 if ($1 && $3.b1) { 4720 yyerror("\"pass\" not valid with \"no\""); 4721 YYERROR; 4722 } 4723 if ($1) 4724 $$.b1 = PF_NORDR; 4725 else 4726 $$.b1 = PF_RDR; 4727 $$.b2 = $3.b1; 4728 $$.w = $3.b2; 4729 $$.w2 = $3.w2; 4730 } 4731 ; 4732 4733 natrule : nataction interface af proto fromto tag tagged rtable 4734 nat_redirspec 4735 { 4736 struct pfctl_rule r; 4737 struct node_state_opt *o; 4738 4739 if (check_rulestate(PFCTL_STATE_NAT)) 4740 YYERROR; 4741 4742 pfctl_init_rule(&r); 4743 4744 r.action = $1.b1; 4745 r.natpass = $1.b2; 4746 r.log = $1.w; 4747 r.logif = $1.w2; 4748 r.af = $3; 4749 4750 if (!r.af) { 4751 if ($5.src.host && $5.src.host->af && 4752 !$5.src.host->ifindex) 4753 r.af = $5.src.host->af; 4754 else if ($5.dst.host && $5.dst.host->af && 4755 !$5.dst.host->ifindex) 4756 r.af = $5.dst.host->af; 4757 } 4758 4759 if ($6 != NULL) 4760 if (strlcpy(r.tagname, $6, PF_TAG_NAME_SIZE) >= 4761 PF_TAG_NAME_SIZE) { 4762 yyerror("tag too long, max %u chars", 4763 PF_TAG_NAME_SIZE - 1); 4764 YYERROR; 4765 } 4766 4767 if ($7.name) 4768 if (strlcpy(r.match_tagname, $7.name, 4769 PF_TAG_NAME_SIZE) >= PF_TAG_NAME_SIZE) { 4770 yyerror("tag too long, max %u chars", 4771 PF_TAG_NAME_SIZE - 1); 4772 YYERROR; 4773 } 4774 r.match_tag_not = $7.neg; 4775 r.rtableid = $8; 4776 4777 if (r.action == PF_NONAT || r.action == PF_NORDR) { 4778 if ($9 != NULL) { 4779 yyerror("translation rule with 'no' " 4780 "does not need '->'"); 4781 YYERROR; 4782 } 4783 } else { 4784 if ($9 == NULL || $9->host == NULL) { 4785 yyerror("translation rule requires '-> " 4786 "address'"); 4787 YYERROR; 4788 } 4789 if (!r.af && ! $9->host->ifindex) 4790 r.af = $9->host->af; 4791 4792 remove_invalid_hosts(&$9->host, &r.af); 4793 if (invalid_redirect($9->host, r.af)) 4794 YYERROR; 4795 if ($9->host->addr.type == PF_ADDR_DYNIFTL) { 4796 if (($9->host = gen_dynnode($9->host, r.af)) == NULL) 4797 err(1, "calloc"); 4798 } 4799 if (check_netmask($9->host, r.af)) 4800 YYERROR; 4801 } 4802 4803 o = keep_state_defaults; 4804 while (o) { 4805 switch (o->type) { 4806 case PF_STATE_OPT_PFLOW: 4807 if (r.rule_flag & PFRULE_PFLOW) { 4808 yyerror("state pflow option: " 4809 "multiple definitions"); 4810 YYERROR; 4811 } 4812 r.rule_flag |= PFRULE_PFLOW; 4813 break; 4814 } 4815 o = o->next; 4816 } 4817 4818 expand_rule(&r, false, $2, NULL, $9, NULL, $4, 4819 $5.src_os, $5.src.host, $5.src.port, $5.dst.host, 4820 $5.dst.port, 0, 0, 0, 0, ""); 4821 } 4822 ; 4823 4824 binatrule : no BINAT natpasslog interface af proto FROM ipspec toipspec tag 4825 tagged rtable binat_redirspec 4826 { 4827 struct pfctl_rule binat; 4828 struct pf_pooladdr *pa; 4829 4830 if (check_rulestate(PFCTL_STATE_NAT)) 4831 YYERROR; 4832 if (disallow_urpf_failed($9, "\"urpf-failed\" is not " 4833 "permitted as a binat destination")) 4834 YYERROR; 4835 4836 pfctl_init_rule(&binat); 4837 4838 if ($1 && $3.b1) { 4839 yyerror("\"pass\" not valid with \"no\""); 4840 YYERROR; 4841 } 4842 if ($1) 4843 binat.action = PF_NOBINAT; 4844 else 4845 binat.action = PF_BINAT; 4846 binat.natpass = $3.b1; 4847 binat.log = $3.b2; 4848 binat.logif = $3.w2; 4849 binat.af = $5; 4850 if (!binat.af && $8 != NULL && $8->af) 4851 binat.af = $8->af; 4852 if (!binat.af && $9 != NULL && $9->af) 4853 binat.af = $9->af; 4854 4855 if (!binat.af && $13 != NULL && $13->host) 4856 binat.af = $13->host->af; 4857 if (!binat.af) { 4858 yyerror("address family (inet/inet6) " 4859 "undefined"); 4860 YYERROR; 4861 } 4862 4863 if ($4 != NULL) { 4864 memcpy(binat.ifname, $4->ifname, 4865 sizeof(binat.ifname)); 4866 binat.ifnot = $4->not; 4867 free($4); 4868 } 4869 4870 if ($10 != NULL) 4871 if (strlcpy(binat.tagname, $10, 4872 PF_TAG_NAME_SIZE) >= PF_TAG_NAME_SIZE) { 4873 yyerror("tag too long, max %u chars", 4874 PF_TAG_NAME_SIZE - 1); 4875 YYERROR; 4876 } 4877 if ($11.name) 4878 if (strlcpy(binat.match_tagname, $11.name, 4879 PF_TAG_NAME_SIZE) >= PF_TAG_NAME_SIZE) { 4880 yyerror("tag too long, max %u chars", 4881 PF_TAG_NAME_SIZE - 1); 4882 YYERROR; 4883 } 4884 binat.match_tag_not = $11.neg; 4885 binat.rtableid = $12; 4886 4887 if ($6 != NULL) { 4888 binat.proto = $6->proto; 4889 free($6); 4890 } 4891 4892 if ($8 != NULL && disallow_table($8, "invalid use of " 4893 "table <%s> as the source address of a binat rule")) 4894 YYERROR; 4895 if ($8 != NULL && disallow_alias($8, "invalid use of " 4896 "interface (%s) as the source address of a binat " 4897 "rule")) 4898 YYERROR; 4899 if ($13 != NULL && $13->host != NULL && disallow_table( 4900 $13->host, "invalid use of table <%s> as the " 4901 "redirect address of a binat rule")) 4902 YYERROR; 4903 if ($13 != NULL && $13->host != NULL && disallow_alias( 4904 $13->host, "invalid use of interface (%s) as the " 4905 "redirect address of a binat rule")) 4906 YYERROR; 4907 4908 if ($8 != NULL) { 4909 if ($8->next) { 4910 yyerror("multiple binat ip addresses"); 4911 YYERROR; 4912 } 4913 if ($8->addr.type == PF_ADDR_DYNIFTL) 4914 $8->af = binat.af; 4915 if ($8->af != binat.af) { 4916 yyerror("binat ip versions must match"); 4917 YYERROR; 4918 } 4919 if ($8->addr.type == PF_ADDR_DYNIFTL) { 4920 if (($8 = gen_dynnode($8, binat.af)) == NULL) 4921 err(1, "calloc"); 4922 } 4923 if (check_netmask($8, binat.af)) 4924 YYERROR; 4925 memcpy(&binat.src.addr, &$8->addr, 4926 sizeof(binat.src.addr)); 4927 free($8); 4928 } 4929 if ($9 != NULL) { 4930 if ($9->next) { 4931 yyerror("multiple binat ip addresses"); 4932 YYERROR; 4933 } 4934 if ($9->af != binat.af && $9->af) { 4935 yyerror("binat ip versions must match"); 4936 YYERROR; 4937 } 4938 if ($9->addr.type == PF_ADDR_DYNIFTL) { 4939 if (($9 = gen_dynnode($9, binat.af)) == NULL) 4940 err(1, "calloc"); 4941 } 4942 if (check_netmask($9, binat.af)) 4943 YYERROR; 4944 memcpy(&binat.dst.addr, &$9->addr, 4945 sizeof(binat.dst.addr)); 4946 binat.dst.neg = $9->not; 4947 free($9); 4948 } 4949 4950 if (binat.action == PF_NOBINAT) { 4951 if ($13 != NULL) { 4952 yyerror("'no binat' rule does not need" 4953 " '->'"); 4954 YYERROR; 4955 } 4956 } else { 4957 if ($13 == NULL || $13->host == NULL) { 4958 yyerror("'binat' rule requires" 4959 " '-> address'"); 4960 YYERROR; 4961 } 4962 4963 remove_invalid_hosts(&$13->host, &binat.af); 4964 if (invalid_redirect($13->host, binat.af)) 4965 YYERROR; 4966 if ($13->host->next != NULL) { 4967 yyerror("binat rule must redirect to " 4968 "a single address"); 4969 YYERROR; 4970 } 4971 if ($13->host->addr.type == PF_ADDR_DYNIFTL) { 4972 if (($13->host = gen_dynnode($13->host, binat.af)) == NULL) 4973 err(1, "calloc"); 4974 } 4975 if (check_netmask($13->host, binat.af)) 4976 YYERROR; 4977 4978 if (!PF_AZERO(&binat.src.addr.v.a.mask, 4979 binat.af) && 4980 !PF_AEQ(&binat.src.addr.v.a.mask, 4981 &$13->host->addr.v.a.mask, binat.af)) { 4982 yyerror("'binat' source mask and " 4983 "redirect mask must be the same"); 4984 YYERROR; 4985 } 4986 4987 pa = calloc(1, sizeof(struct pf_pooladdr)); 4988 if (pa == NULL) 4989 err(1, "binat: calloc"); 4990 pa->addr = $13->host->addr; 4991 pa->ifname[0] = 0; 4992 TAILQ_INSERT_TAIL(&binat.rdr.list, 4993 pa, entries); 4994 4995 free($13); 4996 } 4997 4998 pfctl_append_rule(pf, &binat, ""); 4999 } 5000 ; 5001 5002 tag : /* empty */ { $$ = NULL; } 5003 | TAG STRING { $$ = $2; } 5004 ; 5005 5006 tagged : /* empty */ { $$.neg = 0; $$.name = NULL; } 5007 | not TAGGED string { $$.neg = $1; $$.name = $3; } 5008 ; 5009 5010 rtable : /* empty */ { $$ = -1; } 5011 | RTABLE NUMBER { 5012 if ($2 < 0 || $2 > rt_tableid_max()) { 5013 yyerror("invalid rtable id"); 5014 YYERROR; 5015 } 5016 $$ = $2; 5017 } 5018 ; 5019 5020 route_host : STRING { 5021 $$ = calloc(1, sizeof(struct node_host)); 5022 if ($$ == NULL) 5023 err(1, "route_host: calloc"); 5024 if (strlen($1) >= IFNAMSIZ) { 5025 yyerror("interface name too long"); 5026 YYERROR; 5027 } 5028 $$->ifname = strdup($1); 5029 set_ipmask($$, 128); 5030 $$->next = NULL; 5031 $$->tail = $$; 5032 } 5033 | '(' STRING host ')' { 5034 struct node_host *n; 5035 5036 $$ = $3; 5037 for (n = $3; n != NULL; n = n->next) { 5038 if (strlen($2) >= IFNAMSIZ) { 5039 yyerror("interface name too long"); 5040 YYERROR; 5041 } 5042 n->ifname = strdup($2); 5043 } 5044 } 5045 ; 5046 5047 route_host_list : route_host optnl { $$ = $1; } 5048 | route_host_list comma route_host optnl { 5049 if ($1->af == 0) 5050 $1->af = $3->af; 5051 if ($1->af != $3->af) { 5052 yyerror("all pool addresses must be in the " 5053 "same address family"); 5054 YYERROR; 5055 } 5056 $1->tail->next = $3; 5057 $1->tail = $3->tail; 5058 $$ = $1; 5059 } 5060 ; 5061 5062 routespec : route_host { $$ = $1; } 5063 | '{' optnl route_host_list '}' { $$ = $3; } 5064 ; 5065 5066 route : /* empty */ { 5067 $$.rt = PF_NOPFROUTE; 5068 } 5069 | FASTROUTE { 5070 /* backwards-compat */ 5071 $$.rt = PF_NOPFROUTE; 5072 } 5073 | ROUTETO route_redirspec { 5074 $$.rt = PF_ROUTETO; 5075 $$.redirspec = $2; 5076 } 5077 | REPLYTO route_redirspec { 5078 $$.rt = PF_REPLYTO; 5079 $$.redirspec = $2; 5080 } 5081 | DUPTO route_redirspec { 5082 $$.rt = PF_DUPTO; 5083 $$.redirspec = $2; 5084 } 5085 ; 5086 5087 timeout_spec : STRING NUMBER 5088 { 5089 if (check_rulestate(PFCTL_STATE_OPTION)) { 5090 free($1); 5091 YYERROR; 5092 } 5093 if ($2 < 0 || $2 > UINT_MAX) { 5094 yyerror("only positive values permitted"); 5095 YYERROR; 5096 } 5097 if (pfctl_apply_timeout(pf, $1, $2, 0) != 0) { 5098 yyerror("unknown timeout %s", $1); 5099 free($1); 5100 YYERROR; 5101 } 5102 free($1); 5103 } 5104 | INTERVAL NUMBER { 5105 if (check_rulestate(PFCTL_STATE_OPTION)) 5106 YYERROR; 5107 if ($2 < 0 || $2 > UINT_MAX) { 5108 yyerror("only positive values permitted"); 5109 YYERROR; 5110 } 5111 if (pfctl_apply_timeout(pf, "interval", $2, 0) != 0) 5112 YYERROR; 5113 } 5114 ; 5115 5116 timeout_list : timeout_list comma timeout_spec optnl 5117 | timeout_spec optnl 5118 ; 5119 5120 limit_spec : STRING NUMBER 5121 { 5122 if (check_rulestate(PFCTL_STATE_OPTION)) { 5123 free($1); 5124 YYERROR; 5125 } 5126 if ($2 < 0 || $2 > UINT_MAX) { 5127 yyerror("only positive values permitted"); 5128 YYERROR; 5129 } 5130 if (pfctl_apply_limit(pf, $1, $2) != 0) { 5131 yyerror("unable to set limit %s %u", $1, $2); 5132 free($1); 5133 YYERROR; 5134 } 5135 free($1); 5136 } 5137 ; 5138 5139 limit_list : limit_list comma limit_spec optnl 5140 | limit_spec optnl 5141 ; 5142 5143 comma : ',' 5144 | /* empty */ 5145 ; 5146 5147 yesno : NO { $$ = 0; } 5148 | STRING { 5149 if (!strcmp($1, "yes")) 5150 $$ = 1; 5151 else { 5152 yyerror("invalid value '%s', expected 'yes' " 5153 "or 'no'", $1); 5154 free($1); 5155 YYERROR; 5156 } 5157 free($1); 5158 } 5159 ; 5160 5161 unaryop : '=' { $$ = PF_OP_EQ; } 5162 | NE { $$ = PF_OP_NE; } 5163 | LE { $$ = PF_OP_LE; } 5164 | '<' { $$ = PF_OP_LT; } 5165 | GE { $$ = PF_OP_GE; } 5166 | '>' { $$ = PF_OP_GT; } 5167 ; 5168 5169 %% 5170 5171 int 5172 yyerror(const char *fmt, ...) 5173 { 5174 va_list ap; 5175 5176 file->errors++; 5177 va_start(ap, fmt); 5178 fprintf(stderr, "%s:%d: ", file->name, yylval.lineno); 5179 vfprintf(stderr, fmt, ap); 5180 fprintf(stderr, "\n"); 5181 va_end(ap); 5182 return (0); 5183 } 5184 5185 int 5186 disallow_table(struct node_host *h, const char *fmt) 5187 { 5188 for (; h != NULL; h = h->next) 5189 if (h->addr.type == PF_ADDR_TABLE) { 5190 yyerror(fmt, h->addr.v.tblname); 5191 return (1); 5192 } 5193 return (0); 5194 } 5195 5196 int 5197 disallow_urpf_failed(struct node_host *h, const char *fmt) 5198 { 5199 for (; h != NULL; h = h->next) 5200 if (h->addr.type == PF_ADDR_URPFFAILED) { 5201 yyerror(fmt); 5202 return (1); 5203 } 5204 return (0); 5205 } 5206 5207 int 5208 disallow_alias(struct node_host *h, const char *fmt) 5209 { 5210 for (; h != NULL; h = h->next) 5211 if (DYNIF_MULTIADDR(h->addr)) { 5212 yyerror(fmt, h->addr.v.tblname); 5213 return (1); 5214 } 5215 return (0); 5216 } 5217 5218 int 5219 rule_consistent(struct pfctl_rule *r, int anchor_call) 5220 { 5221 int problems = 0; 5222 5223 switch (r->action) { 5224 case PF_PASS: 5225 case PF_MATCH: 5226 case PF_DROP: 5227 case PF_SCRUB: 5228 case PF_NOSCRUB: 5229 problems = filter_consistent(r, anchor_call); 5230 break; 5231 case PF_NAT: 5232 case PF_NONAT: 5233 problems = nat_consistent(r); 5234 break; 5235 case PF_RDR: 5236 case PF_NORDR: 5237 problems = rdr_consistent(r); 5238 break; 5239 case PF_BINAT: 5240 case PF_NOBINAT: 5241 default: 5242 break; 5243 } 5244 return (problems); 5245 } 5246 5247 int 5248 filter_consistent(struct pfctl_rule *r, int anchor_call) 5249 { 5250 int problems = 0; 5251 5252 if (r->proto != IPPROTO_TCP && r->proto != IPPROTO_UDP && 5253 r->proto != IPPROTO_SCTP && 5254 (r->src.port_op || r->dst.port_op)) { 5255 yyerror("port only applies to tcp/udp/sctp"); 5256 problems++; 5257 } 5258 if (r->proto != IPPROTO_ICMP && r->proto != IPPROTO_ICMPV6 && 5259 (r->type || r->code)) { 5260 yyerror("icmp-type/code only applies to icmp"); 5261 problems++; 5262 } 5263 if (!r->af && (r->type || r->code)) { 5264 yyerror("must indicate address family with icmp-type/code"); 5265 problems++; 5266 } 5267 if (r->rule_flag & PFRULE_AFTO && r->af == r->naf) { 5268 yyerror("must indicate different address family with af-to"); 5269 problems++; 5270 } 5271 if (r->overload_tblname[0] && 5272 r->max_src_conn == 0 && r->max_src_conn_rate.seconds == 0) { 5273 yyerror("'overload' requires 'max-src-conn' " 5274 "or 'max-src-conn-rate'"); 5275 problems++; 5276 } 5277 if ((r->proto == IPPROTO_ICMP && r->af == AF_INET6) || 5278 (r->proto == IPPROTO_ICMPV6 && r->af == AF_INET)) { 5279 yyerror("proto %s doesn't match address family %s", 5280 r->proto == IPPROTO_ICMP ? "icmp" : "icmp6", 5281 r->af == AF_INET ? "inet" : "inet6"); 5282 problems++; 5283 } 5284 if (r->allow_opts && r->action != PF_PASS && r->action != PF_MATCH) { 5285 yyerror("allow-opts can only be specified for pass or " 5286 "match rules"); 5287 problems++; 5288 } 5289 if (r->rule_flag & PFRULE_FRAGMENT && (r->src.port_op || 5290 r->dst.port_op || r->flagset || r->type || r->code)) { 5291 yyerror("fragments can be filtered only on IP header fields"); 5292 problems++; 5293 } 5294 if (r->rule_flag & PFRULE_RETURNRST && r->proto != IPPROTO_TCP) { 5295 yyerror("return-rst can only be applied to TCP rules"); 5296 problems++; 5297 } 5298 if (r->max_src_nodes && !(r->rule_flag & PFRULE_RULESRCTRACK)) { 5299 yyerror("max-src-nodes requires 'source-track rule'"); 5300 problems++; 5301 } 5302 if (r->action != PF_PASS && r->keep_state) { 5303 yyerror("keep state is great, but only for pass rules"); 5304 problems++; 5305 } 5306 if (r->rule_flag & PFRULE_STATESLOPPY && 5307 (r->keep_state == PF_STATE_MODULATE || 5308 r->keep_state == PF_STATE_SYNPROXY)) { 5309 yyerror("sloppy state matching cannot be used with " 5310 "synproxy state or modulate state"); 5311 problems++; 5312 } 5313 if (r->rule_flag & PFRULE_AFTO && r->rt) { 5314 if (r->rt != PF_ROUTETO && r->rt != PF_REPLYTO) { 5315 yyerror("dup-to " 5316 "must not be used on af-to rules"); 5317 problems++; 5318 } 5319 } 5320 /* Basic rule sanity check. */ 5321 switch (r->action) { 5322 case PF_MATCH: 5323 if (r->divert.port) { 5324 yyerror("divert is not supported on match rules"); 5325 problems++; 5326 } 5327 if (r->rt) { 5328 yyerror("route-to, reply-to, dup-to and fastroute " 5329 "must not be used on match rules"); 5330 problems++; 5331 } 5332 if (r->rule_flag & PFRULE_AFTO) { 5333 yyerror("af-to is not supported on match rules"); 5334 problems++; 5335 } 5336 break; 5337 case PF_DROP: 5338 if (r->rt) { 5339 yyerror("route-to, reply-to and dup-to " 5340 "are not supported on block rules"); 5341 problems++; 5342 } 5343 break; 5344 default:; 5345 } 5346 if (!TAILQ_EMPTY(&(r->nat.list)) || !TAILQ_EMPTY(&(r->rdr.list))) { 5347 if (r->action != PF_MATCH && !r->keep_state) { 5348 yyerror("nat-to and rdr-to require keep state"); 5349 problems++; 5350 } 5351 if (r->direction == PF_INOUT) { 5352 yyerror("nat-to and rdr-to require a direction"); 5353 problems++; 5354 } 5355 } 5356 if (r->route.opts & PF_POOL_STICKYADDR && !r->keep_state) { 5357 yyerror("'sticky-address' requires 'keep state'"); 5358 } 5359 return (-problems); 5360 } 5361 5362 int 5363 nat_consistent(struct pfctl_rule *r) 5364 { 5365 return (0); /* yeah! */ 5366 } 5367 5368 int 5369 rdr_consistent(struct pfctl_rule *r) 5370 { 5371 int problems = 0; 5372 5373 if (r->proto != IPPROTO_TCP && r->proto != IPPROTO_UDP && 5374 r->proto != IPPROTO_SCTP) { 5375 if (r->src.port_op) { 5376 yyerror("src port only applies to tcp/udp/sctp"); 5377 problems++; 5378 } 5379 if (r->dst.port_op) { 5380 yyerror("dst port only applies to tcp/udp/sctp"); 5381 problems++; 5382 } 5383 if (r->rdr.proxy_port[0]) { 5384 yyerror("rdr port only applies to tcp/udp/sctp"); 5385 problems++; 5386 } 5387 } 5388 if (r->dst.port_op && 5389 r->dst.port_op != PF_OP_EQ && r->dst.port_op != PF_OP_RRG) { 5390 yyerror("invalid port operator for rdr destination port"); 5391 problems++; 5392 } 5393 return (-problems); 5394 } 5395 5396 int 5397 process_tabledef(char *name, struct table_opts *opts, int popts) 5398 { 5399 struct pfr_buffer ab; 5400 struct node_tinit *ti; 5401 unsigned long maxcount; 5402 size_t s = sizeof(maxcount); 5403 5404 bzero(&ab, sizeof(ab)); 5405 ab.pfrb_type = PFRB_ADDRS; 5406 SIMPLEQ_FOREACH(ti, &opts->init_nodes, entries) { 5407 if (ti->file) 5408 if (pfr_buf_load(&ab, ti->file, 0, append_addr, popts)) { 5409 if (errno) 5410 yyerror("cannot load \"%s\": %s", 5411 ti->file, strerror(errno)); 5412 else 5413 yyerror("file \"%s\" contains bad data", 5414 ti->file); 5415 goto _error; 5416 } 5417 if (ti->host) 5418 if (append_addr_host(&ab, ti->host, 0, 0)) { 5419 yyerror("cannot create address buffer: %s", 5420 strerror(errno)); 5421 goto _error; 5422 } 5423 } 5424 if (pf->opts & PF_OPT_VERBOSE) 5425 print_tabledef(name, opts->flags, opts->init_addr, 5426 &opts->init_nodes); 5427 if (!(pf->opts & PF_OPT_NOACTION) && 5428 pfctl_define_table(name, opts->flags, opts->init_addr, 5429 pf->anchor->path, &ab, pf->anchor->ruleset.tticket)) { 5430 5431 if (sysctlbyname("net.pf.request_maxcount", &maxcount, &s, 5432 NULL, 0) == -1) 5433 maxcount = 65535; 5434 5435 if (ab.pfrb_size > maxcount) 5436 yyerror("cannot define table %s: too many elements.\n" 5437 "Consider increasing net.pf.request_maxcount.", 5438 name); 5439 else 5440 yyerror("cannot define table %s: %s", name, 5441 pfr_strerror(errno)); 5442 5443 goto _error; 5444 } 5445 pf->tdirty = 1; 5446 pfr_buf_clear(&ab); 5447 return (0); 5448 _error: 5449 pfr_buf_clear(&ab); 5450 return (-1); 5451 } 5452 5453 struct keywords { 5454 const char *k_name; 5455 int k_val; 5456 }; 5457 5458 /* macro gore, but you should've seen the prior indentation nightmare... */ 5459 5460 #define FREE_LIST(T,r) \ 5461 do { \ 5462 T *p, *node = r; \ 5463 while (node != NULL) { \ 5464 p = node; \ 5465 node = node->next; \ 5466 free(p); \ 5467 } \ 5468 } while (0) 5469 5470 #define LOOP_THROUGH(T,n,r,C) \ 5471 do { \ 5472 T *n; \ 5473 if (r == NULL) { \ 5474 r = calloc(1, sizeof(T)); \ 5475 if (r == NULL) \ 5476 err(1, "LOOP: calloc"); \ 5477 r->next = NULL; \ 5478 } \ 5479 n = r; \ 5480 while (n != NULL) { \ 5481 do { \ 5482 C; \ 5483 } while (0); \ 5484 n = n->next; \ 5485 } \ 5486 } while (0) 5487 5488 void 5489 expand_label_str(char *label, size_t len, const char *srch, const char *repl) 5490 { 5491 char *tmp; 5492 char *p, *q; 5493 5494 if ((tmp = calloc(1, len)) == NULL) 5495 err(1, "%s: calloc", __func__); 5496 p = q = label; 5497 while ((q = strstr(p, srch)) != NULL) { 5498 *q = '\0'; 5499 if ((strlcat(tmp, p, len) >= len) || 5500 (strlcat(tmp, repl, len) >= len)) 5501 errx(1, "%s: label too long", __func__); 5502 q += strlen(srch); 5503 p = q; 5504 } 5505 if (strlcat(tmp, p, len) >= len) 5506 errx(1, "%s: label too long", __func__); 5507 strlcpy(label, tmp, len); /* always fits */ 5508 free(tmp); 5509 } 5510 5511 void 5512 expand_label_if(const char *name, char *label, size_t len, const char *ifname) 5513 { 5514 if (strstr(label, name) != NULL) { 5515 if (!*ifname) 5516 expand_label_str(label, len, name, "any"); 5517 else 5518 expand_label_str(label, len, name, ifname); 5519 } 5520 } 5521 5522 void 5523 expand_label_addr(const char *name, char *label, size_t len, sa_family_t af, 5524 struct pf_rule_addr *addr) 5525 { 5526 char tmp[64], tmp_not[66]; 5527 5528 if (strstr(label, name) != NULL) { 5529 switch (addr->addr.type) { 5530 case PF_ADDR_DYNIFTL: 5531 snprintf(tmp, sizeof(tmp), "(%s)", addr->addr.v.ifname); 5532 break; 5533 case PF_ADDR_TABLE: 5534 snprintf(tmp, sizeof(tmp), "<%s>", addr->addr.v.tblname); 5535 break; 5536 case PF_ADDR_NOROUTE: 5537 snprintf(tmp, sizeof(tmp), "no-route"); 5538 break; 5539 case PF_ADDR_URPFFAILED: 5540 snprintf(tmp, sizeof(tmp), "urpf-failed"); 5541 break; 5542 case PF_ADDR_ADDRMASK: 5543 if (!af || (PF_AZERO(&addr->addr.v.a.addr, af) && 5544 PF_AZERO(&addr->addr.v.a.mask, af))) 5545 snprintf(tmp, sizeof(tmp), "any"); 5546 else { 5547 char a[48]; 5548 int bits; 5549 5550 if (inet_ntop(af, &addr->addr.v.a.addr, a, 5551 sizeof(a)) == NULL) 5552 snprintf(tmp, sizeof(tmp), "?"); 5553 else { 5554 bits = unmask(&addr->addr.v.a.mask); 5555 if ((af == AF_INET && bits < 32) || 5556 (af == AF_INET6 && bits < 128)) 5557 snprintf(tmp, sizeof(tmp), 5558 "%s/%d", a, bits); 5559 else 5560 snprintf(tmp, sizeof(tmp), 5561 "%s", a); 5562 } 5563 } 5564 break; 5565 default: 5566 snprintf(tmp, sizeof(tmp), "?"); 5567 break; 5568 } 5569 5570 if (addr->neg) { 5571 snprintf(tmp_not, sizeof(tmp_not), "! %s", tmp); 5572 expand_label_str(label, len, name, tmp_not); 5573 } else 5574 expand_label_str(label, len, name, tmp); 5575 } 5576 } 5577 5578 void 5579 expand_label_port(const char *name, char *label, size_t len, 5580 struct pf_rule_addr *addr) 5581 { 5582 char a1[6], a2[6], op[13] = ""; 5583 5584 if (strstr(label, name) != NULL) { 5585 snprintf(a1, sizeof(a1), "%u", ntohs(addr->port[0])); 5586 snprintf(a2, sizeof(a2), "%u", ntohs(addr->port[1])); 5587 if (!addr->port_op) 5588 ; 5589 else if (addr->port_op == PF_OP_IRG) 5590 snprintf(op, sizeof(op), "%s><%s", a1, a2); 5591 else if (addr->port_op == PF_OP_XRG) 5592 snprintf(op, sizeof(op), "%s<>%s", a1, a2); 5593 else if (addr->port_op == PF_OP_EQ) 5594 snprintf(op, sizeof(op), "%s", a1); 5595 else if (addr->port_op == PF_OP_NE) 5596 snprintf(op, sizeof(op), "!=%s", a1); 5597 else if (addr->port_op == PF_OP_LT) 5598 snprintf(op, sizeof(op), "<%s", a1); 5599 else if (addr->port_op == PF_OP_LE) 5600 snprintf(op, sizeof(op), "<=%s", a1); 5601 else if (addr->port_op == PF_OP_GT) 5602 snprintf(op, sizeof(op), ">%s", a1); 5603 else if (addr->port_op == PF_OP_GE) 5604 snprintf(op, sizeof(op), ">=%s", a1); 5605 expand_label_str(label, len, name, op); 5606 } 5607 } 5608 5609 void 5610 expand_label_proto(const char *name, char *label, size_t len, u_int8_t proto) 5611 { 5612 const char *protoname; 5613 char n[4]; 5614 5615 if (strstr(label, name) != NULL) { 5616 protoname = pfctl_proto2name(proto); 5617 if (protoname != NULL) 5618 expand_label_str(label, len, name, protoname); 5619 else { 5620 snprintf(n, sizeof(n), "%u", proto); 5621 expand_label_str(label, len, name, n); 5622 } 5623 } 5624 } 5625 5626 void 5627 expand_label_nr(const char *name, char *label, size_t len, 5628 struct pfctl_rule *r) 5629 { 5630 char n[11]; 5631 5632 if (strstr(label, name) != NULL) { 5633 snprintf(n, sizeof(n), "%u", r->nr); 5634 expand_label_str(label, len, name, n); 5635 } 5636 } 5637 5638 void 5639 expand_label(char *label, size_t len, struct pfctl_rule *r) 5640 { 5641 expand_label_if("$if", label, len, r->ifname); 5642 expand_label_addr("$srcaddr", label, len, r->af, &r->src); 5643 expand_label_addr("$dstaddr", label, len, r->af, &r->dst); 5644 expand_label_port("$srcport", label, len, &r->src); 5645 expand_label_port("$dstport", label, len, &r->dst); 5646 expand_label_proto("$proto", label, len, r->proto); 5647 expand_label_nr("$nr", label, len, r); 5648 } 5649 5650 int 5651 expand_altq(struct pf_altq *a, struct node_if *interfaces, 5652 struct node_queue *nqueues, struct node_queue_bw bwspec, 5653 struct node_queue_opt *opts) 5654 { 5655 struct pf_altq pa, pb; 5656 char qname[PF_QNAME_SIZE]; 5657 struct node_queue *n; 5658 struct node_queue_bw bw; 5659 int errs = 0; 5660 5661 if ((pf->loadopt & PFCTL_FLAG_ALTQ) == 0) { 5662 FREE_LIST(struct node_if, interfaces); 5663 if (nqueues) 5664 FREE_LIST(struct node_queue, nqueues); 5665 return (0); 5666 } 5667 5668 LOOP_THROUGH(struct node_if, interface, interfaces, 5669 memcpy(&pa, a, sizeof(struct pf_altq)); 5670 if (strlcpy(pa.ifname, interface->ifname, 5671 sizeof(pa.ifname)) >= sizeof(pa.ifname)) 5672 errx(1, "%s: strlcpy", __func__); 5673 5674 if (interface->not) { 5675 yyerror("altq on ! <interface> is not supported"); 5676 errs++; 5677 } else { 5678 if (eval_pfaltq(pf, &pa, &bwspec, opts)) 5679 errs++; 5680 else 5681 if (pfctl_add_altq(pf, &pa)) 5682 errs++; 5683 5684 if (pf->opts & PF_OPT_VERBOSE) { 5685 print_altq(&pf->paltq->altq, 0, 5686 &bwspec, opts); 5687 if (nqueues && nqueues->tail) { 5688 printf("queue { "); 5689 LOOP_THROUGH(struct node_queue, queue, 5690 nqueues, 5691 printf("%s ", 5692 queue->queue); 5693 ); 5694 printf("}"); 5695 } 5696 printf("\n"); 5697 } 5698 5699 if (pa.scheduler == ALTQT_CBQ || 5700 pa.scheduler == ALTQT_HFSC || 5701 pa.scheduler == ALTQT_FAIRQ) { 5702 /* now create a root queue */ 5703 memset(&pb, 0, sizeof(struct pf_altq)); 5704 if (strlcpy(qname, "root_", sizeof(qname)) >= 5705 sizeof(qname)) 5706 errx(1, "%s: strlcpy", __func__); 5707 if (strlcat(qname, interface->ifname, 5708 sizeof(qname)) >= sizeof(qname)) 5709 errx(1, "%s: strlcat", __func__); 5710 if (strlcpy(pb.qname, qname, 5711 sizeof(pb.qname)) >= sizeof(pb.qname)) 5712 errx(1, "%s: strlcpy", __func__); 5713 if (strlcpy(pb.ifname, interface->ifname, 5714 sizeof(pb.ifname)) >= sizeof(pb.ifname)) 5715 errx(1, "%s: strlcpy", __func__); 5716 pb.qlimit = pa.qlimit; 5717 pb.scheduler = pa.scheduler; 5718 bw.bw_absolute = pa.ifbandwidth; 5719 bw.bw_percent = 0; 5720 if (eval_pfqueue(pf, &pb, &bw, opts)) 5721 errs++; 5722 else 5723 if (pfctl_add_altq(pf, &pb)) 5724 errs++; 5725 } 5726 5727 LOOP_THROUGH(struct node_queue, queue, nqueues, 5728 n = calloc(1, sizeof(struct node_queue)); 5729 if (n == NULL) 5730 err(1, "%s: calloc", __func__); 5731 if (pa.scheduler == ALTQT_CBQ || 5732 pa.scheduler == ALTQT_HFSC || 5733 pa.scheduler == ALTQT_FAIRQ) 5734 if (strlcpy(n->parent, qname, 5735 sizeof(n->parent)) >= 5736 sizeof(n->parent)) 5737 errx(1, "%s: strlcpy", __func__); 5738 if (strlcpy(n->queue, queue->queue, 5739 sizeof(n->queue)) >= sizeof(n->queue)) 5740 errx(1, "%s: strlcpy", __func__); 5741 if (strlcpy(n->ifname, interface->ifname, 5742 sizeof(n->ifname)) >= sizeof(n->ifname)) 5743 errx(1, "%s: strlcpy", __func__); 5744 n->scheduler = pa.scheduler; 5745 n->next = NULL; 5746 n->tail = n; 5747 if (queues == NULL) 5748 queues = n; 5749 else { 5750 queues->tail->next = n; 5751 queues->tail = n; 5752 } 5753 ); 5754 } 5755 ); 5756 FREE_LIST(struct node_if, interfaces); 5757 if (nqueues) 5758 FREE_LIST(struct node_queue, nqueues); 5759 5760 return (errs); 5761 } 5762 5763 int 5764 expand_queue(struct pf_altq *a, struct node_if *interfaces, 5765 struct node_queue *nqueues, struct node_queue_bw bwspec, 5766 struct node_queue_opt *opts) 5767 { 5768 struct node_queue *n, *nq; 5769 struct pf_altq pa; 5770 u_int8_t found = 0; 5771 u_int8_t errs = 0; 5772 5773 if ((pf->loadopt & PFCTL_FLAG_ALTQ) == 0) { 5774 FREE_LIST(struct node_queue, nqueues); 5775 return (0); 5776 } 5777 5778 if (queues == NULL) { 5779 yyerror("queue %s has no parent", a->qname); 5780 FREE_LIST(struct node_queue, nqueues); 5781 return (1); 5782 } 5783 5784 LOOP_THROUGH(struct node_if, interface, interfaces, 5785 LOOP_THROUGH(struct node_queue, tqueue, queues, 5786 if (!strncmp(a->qname, tqueue->queue, PF_QNAME_SIZE) && 5787 (interface->ifname[0] == 0 || 5788 (!interface->not && !strncmp(interface->ifname, 5789 tqueue->ifname, IFNAMSIZ)) || 5790 (interface->not && strncmp(interface->ifname, 5791 tqueue->ifname, IFNAMSIZ)))) { 5792 /* found ourself in queues */ 5793 found++; 5794 5795 memcpy(&pa, a, sizeof(struct pf_altq)); 5796 5797 if (pa.scheduler != ALTQT_NONE && 5798 pa.scheduler != tqueue->scheduler) { 5799 yyerror("exactly one scheduler type " 5800 "per interface allowed"); 5801 return (1); 5802 } 5803 pa.scheduler = tqueue->scheduler; 5804 5805 /* scheduler dependent error checking */ 5806 switch (pa.scheduler) { 5807 case ALTQT_PRIQ: 5808 if (nqueues != NULL) { 5809 yyerror("priq queues cannot " 5810 "have child queues"); 5811 return (1); 5812 } 5813 if (bwspec.bw_absolute > 0 || 5814 bwspec.bw_percent < 100) { 5815 yyerror("priq doesn't take " 5816 "bandwidth"); 5817 return (1); 5818 } 5819 break; 5820 default: 5821 break; 5822 } 5823 5824 if (strlcpy(pa.ifname, tqueue->ifname, 5825 sizeof(pa.ifname)) >= sizeof(pa.ifname)) 5826 errx(1, "%s: strlcpy", __func__); 5827 if (strlcpy(pa.parent, tqueue->parent, 5828 sizeof(pa.parent)) >= sizeof(pa.parent)) 5829 errx(1, "%s: strlcpy", __func__); 5830 5831 if (eval_pfqueue(pf, &pa, &bwspec, opts)) 5832 errs++; 5833 else 5834 if (pfctl_add_altq(pf, &pa)) 5835 errs++; 5836 5837 for (nq = nqueues; nq != NULL; nq = nq->next) { 5838 if (!strcmp(a->qname, nq->queue)) { 5839 yyerror("queue cannot have " 5840 "itself as child"); 5841 errs++; 5842 continue; 5843 } 5844 n = calloc(1, 5845 sizeof(struct node_queue)); 5846 if (n == NULL) 5847 err(1, "%s: calloc", __func__); 5848 if (strlcpy(n->parent, a->qname, 5849 sizeof(n->parent)) >= 5850 sizeof(n->parent)) 5851 errx(1, "%s strlcpy", __func__); 5852 if (strlcpy(n->queue, nq->queue, 5853 sizeof(n->queue)) >= 5854 sizeof(n->queue)) 5855 errx(1, "%s strlcpy", __func__); 5856 if (strlcpy(n->ifname, tqueue->ifname, 5857 sizeof(n->ifname)) >= 5858 sizeof(n->ifname)) 5859 errx(1, "%s strlcpy", __func__); 5860 n->scheduler = tqueue->scheduler; 5861 n->next = NULL; 5862 n->tail = n; 5863 if (queues == NULL) 5864 queues = n; 5865 else { 5866 queues->tail->next = n; 5867 queues->tail = n; 5868 } 5869 } 5870 if ((pf->opts & PF_OPT_VERBOSE) && ( 5871 (found == 1 && interface->ifname[0] == 0) || 5872 (found > 0 && interface->ifname[0] != 0))) { 5873 print_queue(&pf->paltq->altq, 0, 5874 &bwspec, interface->ifname[0] != 0, 5875 opts); 5876 if (nqueues && nqueues->tail) { 5877 printf("{ "); 5878 LOOP_THROUGH(struct node_queue, 5879 queue, nqueues, 5880 printf("%s ", 5881 queue->queue); 5882 ); 5883 printf("}"); 5884 } 5885 printf("\n"); 5886 } 5887 } 5888 ); 5889 ); 5890 5891 FREE_LIST(struct node_queue, nqueues); 5892 FREE_LIST(struct node_if, interfaces); 5893 5894 if (!found) { 5895 yyerror("queue %s has no parent", a->qname); 5896 errs++; 5897 } 5898 5899 if (errs) 5900 return (1); 5901 else 5902 return (0); 5903 } 5904 5905 static int 5906 pf_af_to_proto(sa_family_t af) 5907 { 5908 if (af == AF_INET) 5909 return (ETHERTYPE_IP); 5910 if (af == AF_INET6) 5911 return (ETHERTYPE_IPV6); 5912 5913 return (0); 5914 } 5915 5916 void 5917 expand_eth_rule(struct pfctl_eth_rule *r, 5918 struct node_if *interfaces, struct node_etherproto *protos, 5919 struct node_mac *srcs, struct node_mac *dsts, 5920 struct node_host *ipsrcs, struct node_host *ipdsts, 5921 const char *bridge_to, const char *anchor_call) 5922 { 5923 char tagname[PF_TAG_NAME_SIZE]; 5924 char match_tagname[PF_TAG_NAME_SIZE]; 5925 char qname[PF_QNAME_SIZE]; 5926 5927 if (strlcpy(tagname, r->tagname, sizeof(tagname)) >= sizeof(tagname)) 5928 errx(1, "%s: tagname", __func__); 5929 if (strlcpy(match_tagname, r->match_tagname, sizeof(match_tagname)) >= 5930 sizeof(match_tagname)) 5931 errx(1, "%s: match_tagname", __func__); 5932 if (strlcpy(qname, r->qname, sizeof(qname)) >= sizeof(qname)) 5933 errx(1, "%s: qname", __func__); 5934 5935 LOOP_THROUGH(struct node_if, interface, interfaces, 5936 LOOP_THROUGH(struct node_etherproto, proto, protos, 5937 LOOP_THROUGH(struct node_mac, src, srcs, 5938 LOOP_THROUGH(struct node_mac, dst, dsts, 5939 LOOP_THROUGH(struct node_host, ipsrc, ipsrcs, 5940 LOOP_THROUGH(struct node_host, ipdst, ipdsts, 5941 strlcpy(r->ifname, interface->ifname, 5942 sizeof(r->ifname)); 5943 r->ifnot = interface->not; 5944 r->proto = proto->proto; 5945 if (!r->proto && ipsrc->af) 5946 r->proto = pf_af_to_proto(ipsrc->af); 5947 else if (!r->proto && ipdst->af) 5948 r->proto = pf_af_to_proto(ipdst->af); 5949 bcopy(src->mac, r->src.addr, ETHER_ADDR_LEN); 5950 bcopy(src->mask, r->src.mask, ETHER_ADDR_LEN); 5951 r->src.neg = src->neg; 5952 r->src.isset = src->isset; 5953 r->ipsrc.addr = ipsrc->addr; 5954 r->ipsrc.neg = ipsrc->not; 5955 r->ipdst.addr = ipdst->addr; 5956 r->ipdst.neg = ipdst->not; 5957 bcopy(dst->mac, r->dst.addr, ETHER_ADDR_LEN); 5958 bcopy(dst->mask, r->dst.mask, ETHER_ADDR_LEN); 5959 r->dst.neg = dst->neg; 5960 r->dst.isset = dst->isset; 5961 r->nr = pf->eastack[pf->asd]->match++; 5962 5963 if (strlcpy(r->tagname, tagname, sizeof(r->tagname)) >= 5964 sizeof(r->tagname)) 5965 errx(1, "%s: r->tagname", __func__); 5966 if (strlcpy(r->match_tagname, match_tagname, 5967 sizeof(r->match_tagname)) >= sizeof(r->match_tagname)) 5968 errx(1, "%s: r->match_tagname", __func__); 5969 if (strlcpy(r->qname, qname, sizeof(r->qname)) >= sizeof(r->qname)) 5970 errx(1, "%s: r->qname", __func__); 5971 5972 if (bridge_to) 5973 strlcpy(r->bridge_to, bridge_to, sizeof(r->bridge_to)); 5974 5975 pfctl_append_eth_rule(pf, r, anchor_call); 5976 )))))); 5977 5978 FREE_LIST(struct node_if, interfaces); 5979 FREE_LIST(struct node_etherproto, protos); 5980 FREE_LIST(struct node_mac, srcs); 5981 FREE_LIST(struct node_mac, dsts); 5982 FREE_LIST(struct node_host, ipsrcs); 5983 FREE_LIST(struct node_host, ipdsts); 5984 } 5985 5986 int 5987 apply_rdr_ports(struct pfctl_rule *r, struct pfctl_pool *rpool, struct redirspec *rs) 5988 { 5989 if (rs == NULL) 5990 return 0; 5991 5992 rpool->proxy_port[0] = ntohs(rs->rport.a); 5993 5994 if (!rs->rport.b && rs->rport.t) { 5995 rpool->proxy_port[1] = ntohs(rs->rport.a) + 5996 (ntohs(r->dst.port[1]) - ntohs(r->dst.port[0])); 5997 } else 5998 r->rdr.proxy_port[1] = ntohs(rs->rport.b); 5999 6000 if (rs->pool_opts.staticport) { 6001 yyerror("the 'static-port' option is only valid with nat rules"); 6002 return 1; 6003 } 6004 6005 if (rs->pool_opts.mape.offset) { 6006 yyerror("the 'map-e-portset' option is only valid with nat rules"); 6007 return 1; 6008 } 6009 6010 return 0; 6011 } 6012 6013 int 6014 apply_nat_ports(struct pfctl_pool *rpool, struct redirspec *rs) 6015 { 6016 if (rs == NULL) 6017 return 0; 6018 6019 rpool->proxy_port[0] = ntohs(rs->rport.a); 6020 rpool->proxy_port[1] = ntohs(rs->rport.b); 6021 if (!rpool->proxy_port[0] && !rpool->proxy_port[1]) { 6022 rpool->proxy_port[0] = PF_NAT_PROXY_PORT_LOW; 6023 rpool->proxy_port[1] = PF_NAT_PROXY_PORT_HIGH; 6024 } else if (!rpool->proxy_port[1]) 6025 rpool->proxy_port[1] = rpool->proxy_port[0]; 6026 6027 if (rs->pool_opts.staticport) { 6028 if (rpool->proxy_port[0] != PF_NAT_PROXY_PORT_LOW && 6029 rpool->proxy_port[1] != PF_NAT_PROXY_PORT_HIGH) { 6030 yyerror("the 'static-port' option can't" 6031 " be used when specifying a port" 6032 " range"); 6033 return 1; 6034 } 6035 rpool->proxy_port[0] = 0; 6036 rpool->proxy_port[1] = 0; 6037 } 6038 6039 if (rs->pool_opts.mape.offset) { 6040 if (rs->pool_opts.staticport) { 6041 yyerror("the 'map-e-portset' option" 6042 " can't be used 'static-port'"); 6043 return 1; 6044 } 6045 if (rpool->proxy_port[0] != PF_NAT_PROXY_PORT_LOW && 6046 rpool->proxy_port[1] != PF_NAT_PROXY_PORT_HIGH) { 6047 yyerror("the 'map-e-portset' option" 6048 " can't be used when specifying" 6049 " a port range"); 6050 return 1; 6051 } 6052 rpool->mape = rs->pool_opts.mape; 6053 } 6054 6055 return 0; 6056 } 6057 6058 int 6059 apply_redirspec(struct pfctl_pool *rpool, struct redirspec *rs) 6060 { 6061 struct node_host *h; 6062 struct pf_pooladdr *pa; 6063 6064 if (rs == NULL) 6065 return 0; 6066 6067 rpool->opts = rs->pool_opts.type; 6068 6069 if ((rpool->opts & PF_POOL_TYPEMASK) == PF_POOL_NONE && 6070 (rs->host->next != NULL || 6071 rs->host->addr.type == PF_ADDR_TABLE || 6072 DYNIF_MULTIADDR(rs->host->addr))) 6073 rpool->opts = PF_POOL_ROUNDROBIN; 6074 6075 if (!PF_POOL_DYNTYPE(rpool->opts) && 6076 (disallow_table(rs->host, "tables are not supported by pool type") || 6077 disallow_alias(rs->host, "interface (%s) is not supported by pool type"))) 6078 return 1; 6079 6080 if (rs->host->next != NULL && 6081 ((rpool->opts & PF_POOL_TYPEMASK) != PF_POOL_ROUNDROBIN)) { 6082 yyerror("r.route.opts must be PF_POOL_ROUNDROBIN"); 6083 return 1; 6084 } 6085 6086 if (rs->host->next != NULL) { 6087 if ((rpool->opts & PF_POOL_TYPEMASK) != 6088 PF_POOL_ROUNDROBIN) { 6089 yyerror("only round-robin valid for multiple " 6090 "redirection addresses"); 6091 return 1; 6092 } 6093 } 6094 6095 rpool->opts |= rs->pool_opts.opts; 6096 6097 if (rs->pool_opts.key != NULL) 6098 memcpy(&(rpool->key), rs->pool_opts.key, 6099 sizeof(struct pf_poolhashkey)); 6100 6101 for (h = rs->host; h != NULL; h = h->next) { 6102 pa = calloc(1, sizeof(struct pf_pooladdr)); 6103 if (pa == NULL) 6104 err(1, "%s: calloc", __func__); 6105 pa->addr = h->addr; 6106 if (h->ifname != NULL) { 6107 if (strlcpy(pa->ifname, h->ifname, 6108 sizeof(pa->ifname)) >= sizeof(pa->ifname)) 6109 errx(1, "%s: strlcpy", __func__); 6110 } else 6111 pa->ifname[0] = 0; 6112 TAILQ_INSERT_TAIL(&(rpool->list), pa, entries); 6113 } 6114 6115 return 0; 6116 } 6117 6118 int 6119 check_binat_redirspec(struct node_host *src_host, struct pfctl_rule *r, int af) 6120 { 6121 struct pf_pooladdr *nat_pool = TAILQ_FIRST(&(r->nat.list)); 6122 int error = 0; 6123 6124 /* XXX: FreeBSD allows syntax like "{ host1 host2 }" for redirection 6125 * pools but does not covert them to tables automatically, because 6126 * syntax "{ (iface1 host1), (iface2 iface2) }" is allowed for route-to 6127 * redirection. Add a FreeBSD-specific guard against using multiple 6128 * hosts for source and redirection. 6129 */ 6130 if (src_host->next) { 6131 yyerror("invalid use of table as the source address " 6132 "of a binat-to rule"); 6133 error++; 6134 } 6135 if (TAILQ_NEXT(nat_pool, entries)) { 6136 yyerror ("tables cannot be used as the redirect " 6137 "address of a binat-to rule"); 6138 error++; 6139 } 6140 6141 if (disallow_table(src_host, "invalid use of table " 6142 "<%s> as the source address of a binat-to rule") || 6143 disallow_alias(src_host, "invalid use of interface " 6144 "(%s) as the source address of a binat-to rule")) { 6145 error++; 6146 } else if ((r->src.addr.type != PF_ADDR_ADDRMASK && 6147 r->src.addr.type != PF_ADDR_DYNIFTL) || 6148 (nat_pool->addr.type != PF_ADDR_ADDRMASK && 6149 nat_pool->addr.type != PF_ADDR_DYNIFTL)) { 6150 yyerror("binat-to requires a specified " 6151 "source and redirect address"); 6152 error++; 6153 } 6154 if (DYNIF_MULTIADDR(r->src.addr) || 6155 DYNIF_MULTIADDR(nat_pool->addr)) { 6156 yyerror ("dynamic interfaces must be " 6157 "used with:0 in a binat-to rule"); 6158 error++; 6159 } 6160 if (PF_AZERO(&r->src.addr.v.a.mask, af) || 6161 PF_AZERO(&(nat_pool->addr.v.a.mask), af)) { 6162 yyerror ("source and redir addresess must have " 6163 "a matching network mask in binat-rule"); 6164 error++; 6165 } 6166 if (nat_pool->addr.type == PF_ADDR_TABLE) { 6167 yyerror ("tables cannot be used as the redirect " 6168 "address of a binat-to rule"); 6169 error++; 6170 } 6171 if (r->direction != PF_INOUT) { 6172 yyerror("binat-to cannot be specified " 6173 "with a direction"); 6174 error++; 6175 } 6176 6177 /* first specify outbound NAT rule */ 6178 r->direction = PF_OUT; 6179 6180 return (error); 6181 } 6182 6183 void 6184 add_binat_rdr_rule( 6185 struct pfctl_rule *binat_rule, 6186 struct redirspec *binat_nat_redirspec, struct node_host *binat_src_host, 6187 struct pfctl_rule *rdr_rule, struct redirspec **rdr_redirspec, 6188 struct node_host **rdr_dst_host) 6189 { 6190 struct node_host *rdr_src_host; 6191 6192 /* 6193 * We're copying the whole rule, but we must re-init redir pools. 6194 * FreeBSD uses lists of pf_pooladdr, we can't just overwrite them. 6195 */ 6196 bcopy(binat_rule, rdr_rule, sizeof(struct pfctl_rule)); 6197 TAILQ_INIT(&(rdr_rule->rdr.list)); 6198 TAILQ_INIT(&(rdr_rule->nat.list)); 6199 6200 /* now specify inbound rdr rule */ 6201 rdr_rule->direction = PF_IN; 6202 6203 if ((rdr_src_host = calloc(1, sizeof(*rdr_src_host))) == NULL) 6204 err(1, "%s", __func__); 6205 bcopy(binat_src_host, rdr_src_host, sizeof(*rdr_src_host)); 6206 rdr_src_host->ifname = NULL; 6207 rdr_src_host->next = NULL; 6208 rdr_src_host->tail = NULL; 6209 6210 if (((*rdr_dst_host) = calloc(1, sizeof(**rdr_dst_host))) == NULL) 6211 err(1, "%s", __func__); 6212 bcopy(&(binat_nat_redirspec->host->addr), &((*rdr_dst_host)->addr), 6213 sizeof((*rdr_dst_host)->addr)); 6214 (*rdr_dst_host)->ifname = NULL; 6215 (*rdr_dst_host)->next = NULL; 6216 (*rdr_dst_host)->tail = NULL; 6217 6218 if (((*rdr_redirspec) = calloc(1, sizeof(**rdr_redirspec))) == NULL) 6219 err(1, "%s", __func__); 6220 bcopy(binat_nat_redirspec, (*rdr_redirspec), sizeof(**rdr_redirspec)); 6221 (*rdr_redirspec)->pool_opts.staticport = 0; 6222 (*rdr_redirspec)->host = rdr_src_host; 6223 } 6224 6225 void 6226 expand_rule(struct pfctl_rule *r, bool keeprule, 6227 struct node_if *interfaces, struct redirspec *nat, 6228 struct redirspec *rdr, struct redirspec *route, 6229 struct node_proto *protos, 6230 struct node_os *src_oses, struct node_host *src_hosts, 6231 struct node_port *src_ports, struct node_host *dst_hosts, 6232 struct node_port *dst_ports, struct node_uid *uids, struct node_gid *gids, 6233 struct node_if *rcv, struct node_icmp *icmp_types, const char *anchor_call) 6234 { 6235 sa_family_t af = r->af; 6236 int added = 0, error = 0; 6237 char ifname[IF_NAMESIZE]; 6238 char label[PF_RULE_MAX_LABEL_COUNT][PF_RULE_LABEL_SIZE]; 6239 char tagname[PF_TAG_NAME_SIZE]; 6240 char match_tagname[PF_TAG_NAME_SIZE]; 6241 struct node_host *osrch, *odsth; 6242 u_int8_t flags, flagset, keep_state; 6243 6244 memcpy(label, r->label, sizeof(r->label)); 6245 assert(sizeof(r->label) == sizeof(label)); 6246 if (strlcpy(tagname, r->tagname, sizeof(tagname)) >= sizeof(tagname)) 6247 errx(1, "%s: strlcpy", __func__); 6248 if (strlcpy(match_tagname, r->match_tagname, sizeof(match_tagname)) >= 6249 sizeof(match_tagname)) 6250 errx(1, "%s: strlcpy", __func__); 6251 flags = r->flags; 6252 flagset = r->flagset; 6253 keep_state = r->keep_state; 6254 6255 LOOP_THROUGH(struct node_if, interface, interfaces, 6256 LOOP_THROUGH(struct node_proto, proto, protos, 6257 LOOP_THROUGH(struct node_icmp, icmp_type, icmp_types, 6258 LOOP_THROUGH(struct node_host, src_host, src_hosts, 6259 LOOP_THROUGH(struct node_host, dst_host, dst_hosts, 6260 LOOP_THROUGH(struct node_port, src_port, src_ports, 6261 LOOP_THROUGH(struct node_port, dst_port, dst_ports, 6262 LOOP_THROUGH(struct node_os, src_os, src_oses, 6263 LOOP_THROUGH(struct node_uid, uid, uids, 6264 LOOP_THROUGH(struct node_gid, gid, gids, 6265 6266 r->af = af; 6267 6268 if (r->rule_flag & PFRULE_AFTO) { 6269 assert(nat != NULL); 6270 r->naf = nat->af; 6271 } 6272 6273 /* for link-local IPv6 address, interface must match up */ 6274 if ((r->af && src_host->af && r->af != src_host->af) || 6275 (r->af && dst_host->af && r->af != dst_host->af) || 6276 (src_host->af && dst_host->af && 6277 src_host->af != dst_host->af) || 6278 (src_host->ifindex && dst_host->ifindex && 6279 src_host->ifindex != dst_host->ifindex) || 6280 (src_host->ifindex && *interface->ifname && 6281 src_host->ifindex != ifa_nametoindex(interface->ifname)) || 6282 (dst_host->ifindex && *interface->ifname && 6283 dst_host->ifindex != ifa_nametoindex(interface->ifname))) 6284 continue; 6285 if (!r->af && src_host->af) 6286 r->af = src_host->af; 6287 else if (!r->af && dst_host->af) 6288 r->af = dst_host->af; 6289 6290 if (*interface->ifname) 6291 strlcpy(r->ifname, interface->ifname, 6292 sizeof(r->ifname)); 6293 else if (ifa_indextoname(src_host->ifindex, ifname)) 6294 strlcpy(r->ifname, ifname, sizeof(r->ifname)); 6295 else if (ifa_indextoname(dst_host->ifindex, ifname)) 6296 strlcpy(r->ifname, ifname, sizeof(r->ifname)); 6297 else 6298 memset(r->ifname, '\0', sizeof(r->ifname)); 6299 6300 memcpy(r->label, label, sizeof(r->label)); 6301 if (strlcpy(r->tagname, tagname, sizeof(r->tagname)) >= 6302 sizeof(r->tagname)) 6303 errx(1, "%s: strlcpy", __func__); 6304 if (strlcpy(r->match_tagname, match_tagname, 6305 sizeof(r->match_tagname)) >= sizeof(r->match_tagname)) 6306 errx(1, "%s: strlcpy", __func__); 6307 6308 osrch = odsth = NULL; 6309 if (src_host->addr.type == PF_ADDR_DYNIFTL) { 6310 osrch = src_host; 6311 if ((src_host = gen_dynnode(src_host, r->af)) == NULL) 6312 err(1, "%s: calloc", __func__); 6313 } 6314 if (dst_host->addr.type == PF_ADDR_DYNIFTL) { 6315 odsth = dst_host; 6316 if ((dst_host = gen_dynnode(dst_host, r->af)) == NULL) 6317 err(1, "%s: calloc", __func__); 6318 } 6319 6320 error += check_netmask(src_host, r->af); 6321 error += check_netmask(dst_host, r->af); 6322 6323 r->ifnot = interface->not; 6324 r->proto = proto->proto; 6325 r->src.addr = src_host->addr; 6326 r->src.neg = src_host->not; 6327 r->src.port[0] = src_port->port[0]; 6328 r->src.port[1] = src_port->port[1]; 6329 r->src.port_op = src_port->op; 6330 r->dst.addr = dst_host->addr; 6331 r->dst.neg = dst_host->not; 6332 r->dst.port[0] = dst_port->port[0]; 6333 r->dst.port[1] = dst_port->port[1]; 6334 r->dst.port_op = dst_port->op; 6335 r->uid.op = uid->op; 6336 r->uid.uid[0] = uid->uid[0]; 6337 r->uid.uid[1] = uid->uid[1]; 6338 r->gid.op = gid->op; 6339 r->gid.gid[0] = gid->gid[0]; 6340 r->gid.gid[1] = gid->gid[1]; 6341 if (rcv) { 6342 strlcpy(r->rcv_ifname, rcv->ifname, 6343 sizeof(r->rcv_ifname)); 6344 r->rcvifnot = rcv->not; 6345 } 6346 r->type = icmp_type->type; 6347 r->code = icmp_type->code; 6348 6349 if ((keep_state == PF_STATE_MODULATE || 6350 keep_state == PF_STATE_SYNPROXY) && 6351 r->proto && r->proto != IPPROTO_TCP) 6352 r->keep_state = PF_STATE_NORMAL; 6353 else 6354 r->keep_state = keep_state; 6355 6356 if (r->proto && r->proto != IPPROTO_TCP) { 6357 r->flags = 0; 6358 r->flagset = 0; 6359 } else { 6360 r->flags = flags; 6361 r->flagset = flagset; 6362 } 6363 if (icmp_type->proto && r->proto != icmp_type->proto) { 6364 yyerror("icmp-type mismatch"); 6365 error++; 6366 } 6367 6368 if (src_os && src_os->os) { 6369 r->os_fingerprint = pfctl_get_fingerprint(src_os->os); 6370 if ((pf->opts & PF_OPT_VERBOSE2) && 6371 r->os_fingerprint == PF_OSFP_NOMATCH) 6372 fprintf(stderr, 6373 "warning: unknown '%s' OS fingerprint\n", 6374 src_os->os); 6375 } else { 6376 r->os_fingerprint = PF_OSFP_ANY; 6377 } 6378 6379 if (r->action == PF_RDR) { 6380 /* Pre-FreeBSD 15 "rdr" rule */ 6381 error += apply_rdr_ports(r, &(r->rdr), rdr); 6382 error += apply_redirspec(&(r->rdr), rdr); 6383 } else if (r->action == PF_NAT) { 6384 /* Pre-FreeBSD 15 "nat" rule */ 6385 error += apply_nat_ports(&(r->rdr), rdr); 6386 error += apply_redirspec(&(r->rdr), rdr); 6387 } else { 6388 /* Modern rule with optional NAT, BINAT, RDR or ROUTE*/ 6389 error += apply_redirspec(&(r->route), route); 6390 6391 error += apply_nat_ports(&(r->nat), nat); 6392 error += apply_redirspec(&(r->nat), nat); 6393 error += apply_rdr_ports(r, &(r->rdr), rdr); 6394 error += apply_redirspec(&(r->rdr), rdr); 6395 6396 if (nat && nat->binat) 6397 error += check_binat_redirspec(src_host, r, af); 6398 } 6399 6400 if (rule_consistent(r, anchor_call[0]) < 0 || error) 6401 yyerror("skipping rule due to errors"); 6402 else { 6403 r->nr = pf->astack[pf->asd]->match++; 6404 pfctl_append_rule(pf, r, anchor_call); 6405 added++; 6406 } 6407 6408 /* Generate binat's matching inbound rule */ 6409 if (!error && nat && nat->binat) { 6410 struct pfctl_rule rdr_rule; 6411 struct redirspec *rdr_redirspec; 6412 struct node_host *rdr_dst_host; 6413 6414 add_binat_rdr_rule( 6415 r, nat, src_hosts, 6416 &rdr_rule, &rdr_redirspec, &rdr_dst_host); 6417 6418 expand_rule(&rdr_rule, true, interface, NULL, rdr_redirspec, 6419 NULL, proto, src_os, dst_host, dst_port, 6420 rdr_dst_host, src_port, uid, gid, rcv, icmp_type, 6421 ""); 6422 } 6423 6424 if (osrch && src_host->addr.type == PF_ADDR_DYNIFTL) { 6425 free(src_host); 6426 src_host = osrch; 6427 } 6428 if (odsth && dst_host->addr.type == PF_ADDR_DYNIFTL) { 6429 free(dst_host); 6430 dst_host = odsth; 6431 } 6432 6433 )))))))))); 6434 6435 if (!keeprule) { 6436 FREE_LIST(struct node_if, interfaces); 6437 FREE_LIST(struct node_proto, protos); 6438 FREE_LIST(struct node_host, src_hosts); 6439 FREE_LIST(struct node_port, src_ports); 6440 FREE_LIST(struct node_os, src_oses); 6441 FREE_LIST(struct node_host, dst_hosts); 6442 FREE_LIST(struct node_port, dst_ports); 6443 FREE_LIST(struct node_uid, uids); 6444 FREE_LIST(struct node_gid, gids); 6445 FREE_LIST(struct node_icmp, icmp_types); 6446 if (nat) { 6447 FREE_LIST(struct node_host, nat->host); 6448 free(nat); 6449 } 6450 if (rdr) { 6451 FREE_LIST(struct node_host, rdr->host); 6452 free(rdr); 6453 } 6454 if (route) { 6455 FREE_LIST(struct node_host, route->host); 6456 free(route); 6457 } 6458 } 6459 6460 if (!added) 6461 yyerror("rule expands to no valid combination"); 6462 } 6463 6464 int 6465 expand_skip_interface(struct node_if *interfaces) 6466 { 6467 int errs = 0; 6468 6469 if (!interfaces || (!interfaces->next && !interfaces->not && 6470 !strcmp(interfaces->ifname, "none"))) { 6471 if (pf->opts & PF_OPT_VERBOSE) 6472 printf("set skip on none\n"); 6473 errs = pfctl_set_interface_flags(pf, "", PFI_IFLAG_SKIP, 0); 6474 return (errs); 6475 } 6476 6477 if (pf->opts & PF_OPT_VERBOSE) 6478 printf("set skip on {"); 6479 LOOP_THROUGH(struct node_if, interface, interfaces, 6480 if (pf->opts & PF_OPT_VERBOSE) 6481 printf(" %s", interface->ifname); 6482 if (interface->not) { 6483 yyerror("skip on ! <interface> is not supported"); 6484 errs++; 6485 } else 6486 errs += pfctl_set_interface_flags(pf, 6487 interface->ifname, PFI_IFLAG_SKIP, 1); 6488 ); 6489 if (pf->opts & PF_OPT_VERBOSE) 6490 printf(" }\n"); 6491 6492 FREE_LIST(struct node_if, interfaces); 6493 6494 if (errs) 6495 return (1); 6496 else 6497 return (0); 6498 } 6499 6500 void 6501 freehostlist(struct node_host *h) 6502 { 6503 FREE_LIST(struct node_host, h); 6504 } 6505 6506 #undef FREE_LIST 6507 #undef LOOP_THROUGH 6508 6509 int 6510 check_rulestate(int desired_state) 6511 { 6512 if (require_order && (rulestate > desired_state)) { 6513 yyerror("Rules must be in order: options, ethernet, " 6514 "normalization, queueing, translation, filtering"); 6515 return (1); 6516 } 6517 rulestate = desired_state; 6518 return (0); 6519 } 6520 6521 int 6522 kw_cmp(const void *k, const void *e) 6523 { 6524 return (strcmp(k, ((const struct keywords *)e)->k_name)); 6525 } 6526 6527 int 6528 lookup(char *s) 6529 { 6530 /* this has to be sorted always */ 6531 static const struct keywords keywords[] = { 6532 { "af-to", AFTO}, 6533 { "all", ALL}, 6534 { "allow-opts", ALLOWOPTS}, 6535 { "allow-related", ALLOW_RELATED}, 6536 { "altq", ALTQ}, 6537 { "anchor", ANCHOR}, 6538 { "antispoof", ANTISPOOF}, 6539 { "any", ANY}, 6540 { "bandwidth", BANDWIDTH}, 6541 { "binat", BINAT}, 6542 { "binat-anchor", BINATANCHOR}, 6543 { "binat-to", BINATTO}, 6544 { "bitmask", BITMASK}, 6545 { "block", BLOCK}, 6546 { "block-policy", BLOCKPOLICY}, 6547 { "bridge-to", BRIDGE_TO}, 6548 { "buckets", BUCKETS}, 6549 { "cbq", CBQ}, 6550 { "code", CODE}, 6551 { "codelq", CODEL}, 6552 { "debug", DEBUG}, 6553 { "divert-reply", DIVERTREPLY}, 6554 { "divert-to", DIVERTTO}, 6555 { "dnpipe", DNPIPE}, 6556 { "dnqueue", DNQUEUE}, 6557 { "drop", DROP}, 6558 { "dup-to", DUPTO}, 6559 { "endpoint-independent", ENDPI}, 6560 { "ether", ETHER}, 6561 { "fail-policy", FAILPOLICY}, 6562 { "fairq", FAIRQ}, 6563 { "fastroute", FASTROUTE}, 6564 { "file", FILENAME}, 6565 { "fingerprints", FINGERPRINTS}, 6566 { "flags", FLAGS}, 6567 { "floating", FLOATING}, 6568 { "flush", FLUSH}, 6569 { "for", FOR}, 6570 { "fragment", FRAGMENT}, 6571 { "from", FROM}, 6572 { "global", GLOBAL}, 6573 { "group", GROUP}, 6574 { "hfsc", HFSC}, 6575 { "hogs", HOGS}, 6576 { "hostid", HOSTID}, 6577 { "icmp-type", ICMPTYPE}, 6578 { "icmp6-type", ICMP6TYPE}, 6579 { "if-bound", IFBOUND}, 6580 { "in", IN}, 6581 { "include", INCLUDE}, 6582 { "inet", INET}, 6583 { "inet6", INET6}, 6584 { "interval", INTERVAL}, 6585 { "keep", KEEP}, 6586 { "keepcounters", KEEPCOUNTERS}, 6587 { "l3", L3}, 6588 { "label", LABEL}, 6589 { "limit", LIMIT}, 6590 { "linkshare", LINKSHARE}, 6591 { "load", LOAD}, 6592 { "log", LOG}, 6593 { "loginterface", LOGINTERFACE}, 6594 { "map-e-portset", MAPEPORTSET}, 6595 { "match", MATCH}, 6596 { "matches", MATCHES}, 6597 { "max", MAXIMUM}, 6598 { "max-mss", MAXMSS}, 6599 { "max-pkt-rate", MAXPKTRATE}, 6600 { "max-pkt-size", MAXPKTSIZE}, 6601 { "max-src-conn", MAXSRCCONN}, 6602 { "max-src-conn-rate", MAXSRCCONNRATE}, 6603 { "max-src-nodes", MAXSRCNODES}, 6604 { "max-src-states", MAXSRCSTATES}, 6605 { "min-ttl", MINTTL}, 6606 { "modulate", MODULATE}, 6607 { "nat", NAT}, 6608 { "nat-anchor", NATANCHOR}, 6609 { "nat-to", NATTO}, 6610 { "no", NO}, 6611 { "no-df", NODF}, 6612 { "no-route", NOROUTE}, 6613 { "no-sync", NOSYNC}, 6614 { "on", ON}, 6615 { "optimization", OPTIMIZATION}, 6616 { "os", OS}, 6617 { "out", OUT}, 6618 { "overload", OVERLOAD}, 6619 { "pass", PASS}, 6620 { "pflow", PFLOW}, 6621 { "port", PORT}, 6622 { "prio", PRIO}, 6623 { "priority", PRIORITY}, 6624 { "priq", PRIQ}, 6625 { "probability", PROBABILITY}, 6626 { "proto", PROTO}, 6627 { "qlimit", QLIMIT}, 6628 { "queue", QUEUE}, 6629 { "quick", QUICK}, 6630 { "random", RANDOM}, 6631 { "random-id", RANDOMID}, 6632 { "rdr", RDR}, 6633 { "rdr-anchor", RDRANCHOR}, 6634 { "rdr-to", RDRTO}, 6635 { "realtime", REALTIME}, 6636 { "reassemble", REASSEMBLE}, 6637 { "received-on", RECEIVEDON}, 6638 { "reply-to", REPLYTO}, 6639 { "require-order", REQUIREORDER}, 6640 { "return", RETURN}, 6641 { "return-icmp", RETURNICMP}, 6642 { "return-icmp6", RETURNICMP6}, 6643 { "return-rst", RETURNRST}, 6644 { "ridentifier", RIDENTIFIER}, 6645 { "round-robin", ROUNDROBIN}, 6646 { "route", ROUTE}, 6647 { "route-to", ROUTETO}, 6648 { "rtable", RTABLE}, 6649 { "rule", RULE}, 6650 { "ruleset-optimization", RULESET_OPTIMIZATION}, 6651 { "scrub", SCRUB}, 6652 { "set", SET}, 6653 { "set-tos", SETTOS}, 6654 { "skip", SKIP}, 6655 { "sloppy", SLOPPY}, 6656 { "source-hash", SOURCEHASH}, 6657 { "source-track", SOURCETRACK}, 6658 { "state", STATE}, 6659 { "state-defaults", STATEDEFAULTS}, 6660 { "state-policy", STATEPOLICY}, 6661 { "static-port", STATICPORT}, 6662 { "sticky-address", STICKYADDRESS}, 6663 { "syncookies", SYNCOOKIES}, 6664 { "synproxy", SYNPROXY}, 6665 { "table", TABLE}, 6666 { "tag", TAG}, 6667 { "tagged", TAGGED}, 6668 { "target", TARGET}, 6669 { "tbrsize", TBRSIZE}, 6670 { "timeout", TIMEOUT}, 6671 { "to", TO}, 6672 { "tos", TOS}, 6673 { "ttl", TTL}, 6674 { "upperlimit", UPPERLIMIT}, 6675 { "urpf-failed", URPFFAILED}, 6676 { "user", USER}, 6677 }; 6678 const struct keywords *p; 6679 6680 p = bsearch(s, keywords, sizeof(keywords)/sizeof(keywords[0]), 6681 sizeof(keywords[0]), kw_cmp); 6682 6683 if (p) { 6684 if (debug > 1) 6685 fprintf(stderr, "%s: %d\n", s, p->k_val); 6686 return (p->k_val); 6687 } else { 6688 if (debug > 1) 6689 fprintf(stderr, "string: %s\n", s); 6690 return (STRING); 6691 } 6692 } 6693 6694 #define START_EXPAND 1 6695 #define DONE_EXPAND 2 6696 6697 static int expanding; 6698 6699 int 6700 igetc(void) 6701 { 6702 int c; 6703 while (1) { 6704 if (file->ungetpos > 0) 6705 c = file->ungetbuf[--file->ungetpos]; 6706 else 6707 c = getc(file->stream); 6708 if (c == START_EXPAND) 6709 expanding = 1; 6710 else if (c == DONE_EXPAND) 6711 expanding = 0; 6712 else 6713 break; 6714 } 6715 return (c); 6716 } 6717 6718 int 6719 lgetc(int quotec) 6720 { 6721 int c, next; 6722 6723 if (quotec) { 6724 if ((c = igetc()) == EOF) { 6725 yyerror("reached end of file while parsing quoted string"); 6726 if (popfile() == EOF) 6727 return (EOF); 6728 return (quotec); 6729 } 6730 return (c); 6731 } 6732 6733 while ((c = igetc()) == '\\') { 6734 next = igetc(); 6735 if (next != '\n') { 6736 c = next; 6737 break; 6738 } 6739 yylval.lineno = file->lineno; 6740 file->lineno++; 6741 } 6742 6743 if (c == EOF) { 6744 /* 6745 * Fake EOL when hit EOF for the first time. This gets line 6746 * count right if last line in included file is syntactically 6747 * invalid and has no newline. 6748 */ 6749 if (file->eof_reached == 0) { 6750 file->eof_reached = 1; 6751 return ('\n'); 6752 } 6753 while (c == EOF) { 6754 if (popfile() == EOF) 6755 return (EOF); 6756 c = igetc(); 6757 } 6758 } 6759 return (c); 6760 } 6761 6762 void 6763 lungetc(int c) 6764 { 6765 if (c == EOF) 6766 return; 6767 if (file->ungetpos >= file->ungetsize) { 6768 void *p = reallocarray(file->ungetbuf, file->ungetsize, 2); 6769 if (p == NULL) 6770 err(1, "%s", __func__); 6771 file->ungetbuf = p; 6772 file->ungetsize *= 2; 6773 } 6774 file->ungetbuf[file->ungetpos++] = c; 6775 } 6776 6777 int 6778 findeol(void) 6779 { 6780 int c; 6781 6782 /* skip to either EOF or the first real EOL */ 6783 while (1) { 6784 c = lgetc(0); 6785 if (c == '\n') { 6786 file->lineno++; 6787 break; 6788 } 6789 if (c == EOF) 6790 break; 6791 } 6792 return (ERROR); 6793 } 6794 6795 int 6796 yylex(void) 6797 { 6798 char buf[8096]; 6799 char *p, *val; 6800 int quotec, next, c; 6801 int token; 6802 6803 top: 6804 p = buf; 6805 while ((c = lgetc(0)) == ' ' || c == '\t') 6806 ; /* nothing */ 6807 6808 yylval.lineno = file->lineno; 6809 if (c == '#') 6810 while ((c = lgetc(0)) != '\n' && c != EOF) 6811 ; /* nothing */ 6812 if (c == '$' && !expanding) { 6813 while (1) { 6814 if ((c = lgetc(0)) == EOF) 6815 return (0); 6816 6817 if (p + 1 >= buf + sizeof(buf) - 1) { 6818 yyerror("string too long"); 6819 return (findeol()); 6820 } 6821 if (isalnum(c) || c == '_') { 6822 *p++ = (char)c; 6823 continue; 6824 } 6825 *p = '\0'; 6826 lungetc(c); 6827 break; 6828 } 6829 val = symget(buf); 6830 if (val == NULL) { 6831 yyerror("macro '%s' not defined", buf); 6832 return (findeol()); 6833 } 6834 p = val + strlen(val) - 1; 6835 lungetc(DONE_EXPAND); 6836 while (p >= val) { 6837 lungetc(*p); 6838 p--; 6839 } 6840 lungetc(START_EXPAND); 6841 goto top; 6842 } 6843 6844 switch (c) { 6845 case '\'': 6846 case '"': 6847 quotec = c; 6848 while (1) { 6849 if ((c = lgetc(quotec)) == EOF) 6850 return (0); 6851 if (c == '\n') { 6852 file->lineno++; 6853 continue; 6854 } else if (c == '\\') { 6855 if ((next = lgetc(quotec)) == EOF) 6856 return (0); 6857 if (next == quotec || next == ' ' || 6858 next == '\t') 6859 c = next; 6860 else if (next == '\n') { 6861 file->lineno++; 6862 continue; 6863 } 6864 else 6865 lungetc(next); 6866 } else if (c == quotec) { 6867 *p = '\0'; 6868 break; 6869 } else if (c == '\0') { 6870 yyerror("syntax error"); 6871 return (findeol()); 6872 } 6873 if (p + 1 >= buf + sizeof(buf) - 1) { 6874 yyerror("string too long"); 6875 return (findeol()); 6876 } 6877 *p++ = (char)c; 6878 } 6879 yylval.v.string = strdup(buf); 6880 if (yylval.v.string == NULL) 6881 err(1, "%s: strdup", __func__); 6882 return (STRING); 6883 case '!': 6884 next = lgetc(0); 6885 if (next == '=') 6886 return (NE); 6887 lungetc(next); 6888 break; 6889 case '<': 6890 next = lgetc(0); 6891 if (next == '>') { 6892 yylval.v.i = PF_OP_XRG; 6893 return (PORTBINARY); 6894 } else if (next == '=') 6895 return (LE); 6896 lungetc(next); 6897 break; 6898 case '>': 6899 next = lgetc(0); 6900 if (next == '<') { 6901 yylval.v.i = PF_OP_IRG; 6902 return (PORTBINARY); 6903 } else if (next == '=') 6904 return (GE); 6905 lungetc(next); 6906 break; 6907 case '-': 6908 next = lgetc(0); 6909 if (next == '>') 6910 return (ARROW); 6911 lungetc(next); 6912 break; 6913 } 6914 6915 #define allowed_to_end_number(x) \ 6916 (isspace(x) || x == ')' || x ==',' || x == '/' || x == '}' || x == '=') 6917 6918 if (c == '-' || isdigit(c)) { 6919 do { 6920 *p++ = c; 6921 if ((unsigned)(p-buf) >= sizeof(buf)) { 6922 yyerror("string too long"); 6923 return (findeol()); 6924 } 6925 } while ((c = lgetc(0)) != EOF && isdigit(c)); 6926 lungetc(c); 6927 if (p == buf + 1 && buf[0] == '-') 6928 goto nodigits; 6929 if (c == EOF || allowed_to_end_number(c)) { 6930 const char *errstr = NULL; 6931 6932 *p = '\0'; 6933 yylval.v.number = strtonum(buf, LLONG_MIN, 6934 LLONG_MAX, &errstr); 6935 if (errstr) { 6936 yyerror("\"%s\" invalid number: %s", 6937 buf, errstr); 6938 return (findeol()); 6939 } 6940 return (NUMBER); 6941 } else { 6942 nodigits: 6943 while (p > buf + 1) 6944 lungetc(*--p); 6945 c = *--p; 6946 if (c == '-') 6947 return (c); 6948 } 6949 } 6950 6951 #define allowed_in_string(x) \ 6952 (isalnum(x) || (ispunct(x) && x != '(' && x != ')' && \ 6953 x != '{' && x != '}' && x != '<' && x != '>' && \ 6954 x != '!' && x != '=' && x != '/' && x != '#' && \ 6955 x != ',')) 6956 6957 if (isalnum(c) || c == ':' || c == '_') { 6958 do { 6959 *p++ = c; 6960 if ((unsigned)(p-buf) >= sizeof(buf)) { 6961 yyerror("string too long"); 6962 return (findeol()); 6963 } 6964 } while ((c = lgetc(0)) != EOF && (allowed_in_string(c))); 6965 lungetc(c); 6966 *p = '\0'; 6967 if ((token = lookup(buf)) == STRING) 6968 if ((yylval.v.string = strdup(buf)) == NULL) 6969 err(1, "%s: strdup", __func__); 6970 return (token); 6971 } 6972 if (c == '\n') { 6973 yylval.lineno = file->lineno; 6974 file->lineno++; 6975 } 6976 if (c == EOF) 6977 return (0); 6978 return (c); 6979 } 6980 6981 int 6982 check_file_secrecy(int fd, const char *fname) 6983 { 6984 struct stat st; 6985 6986 if (fstat(fd, &st)) { 6987 warn("cannot stat %s", fname); 6988 return (-1); 6989 } 6990 if (st.st_uid != 0 && st.st_uid != getuid()) { 6991 warnx("%s: owner not root or current user", fname); 6992 return (-1); 6993 } 6994 if (st.st_mode & (S_IWGRP | S_IXGRP | S_IRWXO)) { 6995 warnx("%s: group writable or world read/writable", fname); 6996 return (-1); 6997 } 6998 return (0); 6999 } 7000 7001 struct file * 7002 pushfile(const char *name, int secret) 7003 { 7004 struct file *nfile; 7005 7006 if ((nfile = calloc(1, sizeof(struct file))) == NULL || 7007 (nfile->name = strdup(name)) == NULL) { 7008 warn("%s", __func__); 7009 if (nfile) 7010 free(nfile); 7011 return (NULL); 7012 } 7013 if (TAILQ_FIRST(&files) == NULL && strcmp(nfile->name, "-") == 0) { 7014 nfile->stream = stdin; 7015 free(nfile->name); 7016 if ((nfile->name = strdup("stdin")) == NULL) { 7017 warn("%s", __func__); 7018 free(nfile); 7019 return (NULL); 7020 } 7021 } else if ((nfile->stream = fopen(nfile->name, "r")) == NULL) { 7022 warn("%s: %s", __func__, nfile->name); 7023 free(nfile->name); 7024 free(nfile); 7025 return (NULL); 7026 } else if (secret && 7027 check_file_secrecy(fileno(nfile->stream), nfile->name)) { 7028 fclose(nfile->stream); 7029 free(nfile->name); 7030 free(nfile); 7031 return (NULL); 7032 } 7033 nfile->lineno = TAILQ_EMPTY(&files) ? 1 : 0; 7034 nfile->ungetsize = 16; 7035 nfile->ungetbuf = malloc(nfile->ungetsize); 7036 if (nfile->ungetbuf == NULL) { 7037 warn("%s", __func__); 7038 fclose(nfile->stream); 7039 free(nfile->name); 7040 free(nfile); 7041 return (NULL); 7042 } 7043 TAILQ_INSERT_TAIL(&files, nfile, entry); 7044 return (nfile); 7045 } 7046 7047 int 7048 popfile(void) 7049 { 7050 struct file *prev; 7051 7052 if ((prev = TAILQ_PREV(file, files, entry)) != NULL) { 7053 prev->errors += file->errors; 7054 TAILQ_REMOVE(&files, file, entry); 7055 fclose(file->stream); 7056 free(file->name); 7057 free(file->ungetbuf); 7058 free(file); 7059 file = prev; 7060 return (0); 7061 } 7062 return (EOF); 7063 } 7064 7065 int 7066 parse_config(char *filename, struct pfctl *xpf) 7067 { 7068 int errors = 0; 7069 struct sym *sym; 7070 7071 pf = xpf; 7072 errors = 0; 7073 rulestate = PFCTL_STATE_NONE; 7074 returnicmpdefault = (ICMP_UNREACH << 8) | ICMP_UNREACH_PORT; 7075 returnicmp6default = 7076 (ICMP6_DST_UNREACH << 8) | ICMP6_DST_UNREACH_NOPORT; 7077 blockpolicy = PFRULE_DROP; 7078 failpolicy = PFRULE_DROP; 7079 require_order = 1; 7080 7081 if ((file = pushfile(filename, 0)) == NULL) { 7082 warn("cannot open the main config file!"); 7083 return (-1); 7084 } 7085 7086 yyparse(); 7087 errors = file->errors; 7088 popfile(); 7089 7090 /* Free macros and check which have not been used. */ 7091 while ((sym = TAILQ_FIRST(&symhead))) { 7092 if ((pf->opts & PF_OPT_VERBOSE2) && !sym->used) 7093 fprintf(stderr, "warning: macro '%s' not " 7094 "used\n", sym->nam); 7095 free(sym->nam); 7096 free(sym->val); 7097 TAILQ_REMOVE(&symhead, sym, entry); 7098 free(sym); 7099 } 7100 7101 return (errors ? -1 : 0); 7102 } 7103 7104 int 7105 symset(const char *nam, const char *val, int persist) 7106 { 7107 struct sym *sym; 7108 7109 TAILQ_FOREACH(sym, &symhead, entry) { 7110 if (strcmp(nam, sym->nam) == 0) 7111 break; 7112 } 7113 7114 if (sym != NULL) { 7115 if (sym->persist == 1) 7116 return (0); 7117 else { 7118 free(sym->nam); 7119 free(sym->val); 7120 TAILQ_REMOVE(&symhead, sym, entry); 7121 free(sym); 7122 } 7123 } 7124 if ((sym = calloc(1, sizeof(*sym))) == NULL) 7125 return (-1); 7126 7127 sym->nam = strdup(nam); 7128 if (sym->nam == NULL) { 7129 free(sym); 7130 return (-1); 7131 } 7132 sym->val = strdup(val); 7133 if (sym->val == NULL) { 7134 free(sym->nam); 7135 free(sym); 7136 return (-1); 7137 } 7138 sym->used = 0; 7139 sym->persist = persist; 7140 TAILQ_INSERT_TAIL(&symhead, sym, entry); 7141 return (0); 7142 } 7143 7144 int 7145 pfctl_cmdline_symset(char *s) 7146 { 7147 char *sym, *val; 7148 int ret; 7149 7150 if ((val = strrchr(s, '=')) == NULL) 7151 return (-1); 7152 7153 sym = strndup(s, val - s); 7154 if (sym == NULL) 7155 err(1, "%s: malloc", __func__); 7156 7157 ret = symset(sym, val + 1, 1); 7158 free(sym); 7159 7160 return (ret); 7161 } 7162 7163 char * 7164 symget(const char *nam) 7165 { 7166 struct sym *sym; 7167 7168 TAILQ_FOREACH(sym, &symhead, entry) { 7169 if (strcmp(nam, sym->nam) == 0) { 7170 sym->used = 1; 7171 return (sym->val); 7172 } 7173 } 7174 return (NULL); 7175 } 7176 7177 void 7178 mv_rules(struct pfctl_ruleset *src, struct pfctl_ruleset *dst) 7179 { 7180 int i; 7181 struct pfctl_rule *r; 7182 7183 for (i = 0; i < PF_RULESET_MAX; ++i) { 7184 while ((r = TAILQ_FIRST(src->rules[i].active.ptr)) 7185 != NULL) { 7186 TAILQ_REMOVE(src->rules[i].active.ptr, r, entries); 7187 TAILQ_INSERT_TAIL(dst->rules[i].active.ptr, r, entries); 7188 dst->anchor->match++; 7189 } 7190 src->anchor->match = 0; 7191 while ((r = TAILQ_FIRST(src->rules[i].inactive.ptr)) 7192 != NULL) { 7193 TAILQ_REMOVE(src->rules[i].inactive.ptr, r, entries); 7194 TAILQ_INSERT_TAIL(dst->rules[i].inactive.ptr, 7195 r, entries); 7196 } 7197 } 7198 } 7199 7200 void 7201 mv_eth_rules(struct pfctl_eth_ruleset *src, struct pfctl_eth_ruleset *dst) 7202 { 7203 struct pfctl_eth_rule *r; 7204 7205 while ((r = TAILQ_FIRST(&src->rules)) != NULL) { 7206 TAILQ_REMOVE(&src->rules, r, entries); 7207 TAILQ_INSERT_TAIL(&dst->rules, r, entries); 7208 dst->anchor->match++; 7209 } 7210 src->anchor->match = 0; 7211 } 7212 7213 void 7214 decide_address_family(struct node_host *n, sa_family_t *af) 7215 { 7216 if (*af != 0 || n == NULL) 7217 return; 7218 *af = n->af; 7219 while ((n = n->next) != NULL) { 7220 if (n->af != *af) { 7221 *af = 0; 7222 return; 7223 } 7224 } 7225 } 7226 7227 void 7228 remove_invalid_hosts(struct node_host **nh, sa_family_t *af) 7229 { 7230 struct node_host *n = *nh, *prev = NULL; 7231 7232 while (n != NULL) { 7233 if (*af && n->af && n->af != *af) { 7234 /* unlink and free n */ 7235 struct node_host *next = n->next; 7236 7237 /* adjust tail pointer */ 7238 if (n == (*nh)->tail) 7239 (*nh)->tail = prev; 7240 /* adjust previous node's next pointer */ 7241 if (prev == NULL) 7242 *nh = next; 7243 else 7244 prev->next = next; 7245 /* free node */ 7246 if (n->ifname != NULL) 7247 free(n->ifname); 7248 free(n); 7249 n = next; 7250 } else { 7251 if (n->af && !*af) 7252 *af = n->af; 7253 prev = n; 7254 n = n->next; 7255 } 7256 } 7257 } 7258 7259 int 7260 invalid_redirect(struct node_host *nh, sa_family_t af) 7261 { 7262 if (!af) { 7263 struct node_host *n; 7264 7265 /* tables and dyniftl are ok without an address family */ 7266 for (n = nh; n != NULL; n = n->next) { 7267 if (n->addr.type != PF_ADDR_TABLE && 7268 n->addr.type != PF_ADDR_DYNIFTL) { 7269 yyerror("address family not given and " 7270 "translation address expands to multiple " 7271 "address families"); 7272 return (1); 7273 } 7274 } 7275 } 7276 if (nh == NULL) { 7277 yyerror("no translation address with matching address family " 7278 "found."); 7279 return (1); 7280 } 7281 return (0); 7282 } 7283 7284 int 7285 atoul(char *s, u_long *ulvalp) 7286 { 7287 u_long ulval; 7288 char *ep; 7289 7290 errno = 0; 7291 ulval = strtoul(s, &ep, 0); 7292 if (s[0] == '\0' || *ep != '\0') 7293 return (-1); 7294 if (errno == ERANGE && ulval == ULONG_MAX) 7295 return (-1); 7296 *ulvalp = ulval; 7297 return (0); 7298 } 7299 7300 int 7301 getservice(char *n) 7302 { 7303 struct servent *s; 7304 u_long ulval; 7305 7306 if (atoul(n, &ulval) == 0) { 7307 if (ulval > 65535) { 7308 yyerror("illegal port value %lu", ulval); 7309 return (-1); 7310 } 7311 return (htons(ulval)); 7312 } else { 7313 s = getservbyname(n, "tcp"); 7314 if (s == NULL) 7315 s = getservbyname(n, "udp"); 7316 if (s == NULL) 7317 s = getservbyname(n, "sctp"); 7318 if (s == NULL) { 7319 yyerror("unknown port %s", n); 7320 return (-1); 7321 } 7322 return (s->s_port); 7323 } 7324 } 7325 7326 int 7327 rule_label(struct pfctl_rule *r, char *s[PF_RULE_MAX_LABEL_COUNT]) 7328 { 7329 for (int i = 0; i < PF_RULE_MAX_LABEL_COUNT; i++) { 7330 if (s[i] == NULL) 7331 return (0); 7332 7333 if (strlcpy(r->label[i], s[i], sizeof(r->label[0])) >= 7334 sizeof(r->label[0])) { 7335 yyerror("rule label too long (max %d chars)", 7336 sizeof(r->label[0])-1); 7337 return (-1); 7338 } 7339 } 7340 return (0); 7341 } 7342 7343 int 7344 eth_rule_label(struct pfctl_eth_rule *r, char *s[PF_RULE_MAX_LABEL_COUNT]) 7345 { 7346 for (int i = 0; i < PF_RULE_MAX_LABEL_COUNT; i++) { 7347 if (s[i] == NULL) 7348 return (0); 7349 7350 if (strlcpy(r->label[i], s[i], sizeof(r->label[0])) >= 7351 sizeof(r->label[0])) { 7352 yyerror("rule label too long (max %d chars)", 7353 sizeof(r->label[0])-1); 7354 return (-1); 7355 } 7356 } 7357 return (0); 7358 } 7359 7360 u_int16_t 7361 parseicmpspec(char *w, sa_family_t af) 7362 { 7363 const struct icmpcodeent *p; 7364 u_long ulval; 7365 u_int8_t icmptype; 7366 7367 if (af == AF_INET) 7368 icmptype = returnicmpdefault >> 8; 7369 else 7370 icmptype = returnicmp6default >> 8; 7371 7372 if (atoul(w, &ulval) == -1) { 7373 if ((p = geticmpcodebyname(icmptype, w, af)) == NULL) { 7374 yyerror("unknown icmp code %s", w); 7375 return (0); 7376 } 7377 ulval = p->code; 7378 } 7379 if (ulval > 255) { 7380 yyerror("invalid icmp code %lu", ulval); 7381 return (0); 7382 } 7383 return (icmptype << 8 | ulval); 7384 } 7385 7386 int 7387 parseport(char *port, struct range *r, int extensions) 7388 { 7389 char *p = strchr(port, ':'); 7390 7391 if (p == NULL) { 7392 if ((r->a = getservice(port)) == -1) 7393 return (-1); 7394 r->b = 0; 7395 r->t = PF_OP_NONE; 7396 return (0); 7397 } 7398 if ((extensions & PPORT_STAR) && !strcmp(p+1, "*")) { 7399 *p = 0; 7400 if ((r->a = getservice(port)) == -1) 7401 return (-1); 7402 r->b = 0; 7403 r->t = PF_OP_IRG; 7404 return (0); 7405 } 7406 if ((extensions & PPORT_RANGE)) { 7407 *p++ = 0; 7408 if ((r->a = getservice(port)) == -1 || 7409 (r->b = getservice(p)) == -1) 7410 return (-1); 7411 if (r->a == r->b) { 7412 r->b = 0; 7413 r->t = PF_OP_NONE; 7414 } else 7415 r->t = PF_OP_RRG; 7416 return (0); 7417 } 7418 return (-1); 7419 } 7420 7421 int 7422 pfctl_load_anchors(int dev, struct pfctl *pf, struct pfr_buffer *trans) 7423 { 7424 struct loadanchors *la; 7425 7426 TAILQ_FOREACH(la, &loadanchorshead, entries) { 7427 if (pf->opts & PF_OPT_VERBOSE) 7428 fprintf(stderr, "\nLoading anchor %s from %s\n", 7429 la->anchorname, la->filename); 7430 if (pfctl_rules(dev, la->filename, pf->opts, pf->optimize, 7431 la->anchorname, trans) == -1) 7432 return (-1); 7433 } 7434 7435 return (0); 7436 } 7437 7438 int 7439 kw_casecmp(const void *k, const void *e) 7440 { 7441 return (strcasecmp(k, ((const struct keywords *)e)->k_name)); 7442 } 7443 7444 int 7445 map_tos(char *s, int *val) 7446 { 7447 /* DiffServ Codepoints and other TOS mappings */ 7448 const struct keywords toswords[] = { 7449 { "af11", IPTOS_DSCP_AF11 }, 7450 { "af12", IPTOS_DSCP_AF12 }, 7451 { "af13", IPTOS_DSCP_AF13 }, 7452 { "af21", IPTOS_DSCP_AF21 }, 7453 { "af22", IPTOS_DSCP_AF22 }, 7454 { "af23", IPTOS_DSCP_AF23 }, 7455 { "af31", IPTOS_DSCP_AF31 }, 7456 { "af32", IPTOS_DSCP_AF32 }, 7457 { "af33", IPTOS_DSCP_AF33 }, 7458 { "af41", IPTOS_DSCP_AF41 }, 7459 { "af42", IPTOS_DSCP_AF42 }, 7460 { "af43", IPTOS_DSCP_AF43 }, 7461 { "critical", IPTOS_PREC_CRITIC_ECP }, 7462 { "cs0", IPTOS_DSCP_CS0 }, 7463 { "cs1", IPTOS_DSCP_CS1 }, 7464 { "cs2", IPTOS_DSCP_CS2 }, 7465 { "cs3", IPTOS_DSCP_CS3 }, 7466 { "cs4", IPTOS_DSCP_CS4 }, 7467 { "cs5", IPTOS_DSCP_CS5 }, 7468 { "cs6", IPTOS_DSCP_CS6 }, 7469 { "cs7", IPTOS_DSCP_CS7 }, 7470 { "ef", IPTOS_DSCP_EF }, 7471 { "inetcontrol", IPTOS_PREC_INTERNETCONTROL }, 7472 { "lowdelay", IPTOS_LOWDELAY }, 7473 { "netcontrol", IPTOS_PREC_NETCONTROL }, 7474 { "reliability", IPTOS_RELIABILITY }, 7475 { "throughput", IPTOS_THROUGHPUT }, 7476 { "va", IPTOS_DSCP_VA } 7477 }; 7478 const struct keywords *p; 7479 7480 p = bsearch(s, toswords, sizeof(toswords)/sizeof(toswords[0]), 7481 sizeof(toswords[0]), kw_casecmp); 7482 7483 if (p) { 7484 *val = p->k_val; 7485 return (1); 7486 } 7487 return (0); 7488 } 7489 7490 int 7491 rt_tableid_max(void) 7492 { 7493 #ifdef __FreeBSD__ 7494 int fibs; 7495 size_t l = sizeof(fibs); 7496 7497 if (sysctlbyname("net.fibs", &fibs, &l, NULL, 0) == -1) 7498 fibs = 16; /* XXX RT_MAXFIBS, at least limit it some. */ 7499 /* 7500 * As the OpenBSD code only compares > and not >= we need to adjust 7501 * here given we only accept values of 0..n and want to avoid #ifdefs 7502 * in the grammar. 7503 */ 7504 return (fibs - 1); 7505 #else 7506 return (RT_TABLEID_MAX); 7507 #endif 7508 } 7509 7510 struct node_mac* 7511 node_mac_from_string(const char *str) 7512 { 7513 struct node_mac *m; 7514 7515 m = calloc(1, sizeof(struct node_mac)); 7516 if (m == NULL) 7517 err(1, "%s: calloc", __func__); 7518 7519 if (sscanf(str, "%02hhx:%02hhx:%02hhx:%02hhx:%02hhx:%02hhx", 7520 &m->mac[0], &m->mac[1], &m->mac[2], &m->mac[3], &m->mac[4], 7521 &m->mac[5]) != 6) { 7522 free(m); 7523 yyerror("invalid MAC address"); 7524 return (NULL); 7525 } 7526 7527 memset(m->mask, 0xff, ETHER_ADDR_LEN); 7528 m->isset = true; 7529 m->next = NULL; 7530 m->tail = m; 7531 7532 return (m); 7533 } 7534 7535 struct node_mac* 7536 node_mac_from_string_masklen(const char *str, int masklen) 7537 { 7538 struct node_mac *m; 7539 7540 if (masklen < 0 || masklen > (ETHER_ADDR_LEN * 8)) { 7541 yyerror("invalid MAC mask length"); 7542 return (NULL); 7543 } 7544 7545 m = node_mac_from_string(str); 7546 if (m == NULL) 7547 return (NULL); 7548 7549 memset(m->mask, 0, ETHER_ADDR_LEN); 7550 for (int i = 0; i < masklen; i++) 7551 m->mask[i / 8] |= 1 << (i % 8); 7552 7553 return (m); 7554 } 7555 7556 struct node_mac* 7557 node_mac_from_string_mask(const char *str, const char *mask) 7558 { 7559 struct node_mac *m; 7560 7561 m = node_mac_from_string(str); 7562 if (m == NULL) 7563 return (NULL); 7564 7565 if (sscanf(mask, "%02hhx:%02hhx:%02hhx:%02hhx:%02hhx:%02hhx", 7566 &m->mask[0], &m->mask[1], &m->mask[2], &m->mask[3], &m->mask[4], 7567 &m->mask[5]) != 6) { 7568 free(m); 7569 yyerror("invalid MAC mask"); 7570 return (NULL); 7571 } 7572 7573 return (m); 7574 } 7575 7576 int 7577 filteropts_to_rule(struct pfctl_rule *r, struct filter_opts *opts) 7578 { 7579 r->keep_state = opts->keep.action; 7580 r->pktrate.limit = opts->pktrate.limit; 7581 r->pktrate.seconds = opts->pktrate.seconds; 7582 r->prob = opts->prob; 7583 r->rtableid = opts->rtableid; 7584 r->ridentifier = opts->ridentifier; 7585 r->max_pkt_size = opts->max_pkt_size; 7586 r->tos = opts->tos; 7587 7588 if (opts->nodf) 7589 r->scrub_flags |= PFSTATE_NODF; 7590 if (opts->randomid) 7591 r->scrub_flags |= PFSTATE_RANDOMID; 7592 if (opts->minttl) 7593 r->min_ttl = opts->minttl; 7594 if (opts->max_mss) 7595 r->max_mss = opts->max_mss; 7596 7597 if (opts->tag) 7598 if (strlcpy(r->tagname, opts->tag, 7599 PF_TAG_NAME_SIZE) >= PF_TAG_NAME_SIZE) { 7600 yyerror("tag too long, max %u chars", 7601 PF_TAG_NAME_SIZE - 1); 7602 return (1); 7603 } 7604 if (opts->match_tag) 7605 if (strlcpy(r->match_tagname, opts->match_tag, 7606 PF_TAG_NAME_SIZE) >= PF_TAG_NAME_SIZE) { 7607 yyerror("tag too long, max %u chars", 7608 PF_TAG_NAME_SIZE - 1); 7609 return (1); 7610 } 7611 r->match_tag_not = opts->match_tag_not; 7612 7613 if (rule_label(r, opts->label)) 7614 return (1); 7615 for (int i = 0; i < PF_RULE_MAX_LABEL_COUNT; i++) 7616 free(opts->label[i]); 7617 7618 if (opts->marker & FOM_AFTO) 7619 r->rule_flag |= PFRULE_AFTO; 7620 if (opts->marker & FOM_SCRUB_TCP) 7621 r->scrub_flags |= PFSTATE_SCRUB_TCP; 7622 if (opts->marker & FOM_PRIO) 7623 r->prio = opts->prio ? opts->prio : PF_PRIO_ZERO; 7624 if (opts->marker & FOM_SETPRIO) { 7625 r->set_prio[0] = opts->set_prio[0]; 7626 r->set_prio[1] = opts->set_prio[1]; 7627 r->scrub_flags |= PFSTATE_SETPRIO; 7628 } 7629 if (opts->marker & FOM_SETTOS) { 7630 r->scrub_flags |= PFSTATE_SETTOS; 7631 r->set_tos = opts->settos; 7632 } 7633 7634 r->flags = opts->flags.b1; 7635 r->flagset = opts->flags.b2; 7636 if ((opts->flags.b1 & opts->flags.b2) != opts->flags.b1) { 7637 yyerror("flags always false"); 7638 return (1); 7639 } 7640 7641 if (opts->queues.qname != NULL) { 7642 if (strlcpy(r->qname, opts->queues.qname, 7643 sizeof(r->qname)) >= sizeof(r->qname)) { 7644 yyerror("rule qname too long (max " 7645 "%d chars)", sizeof(r->qname)-1); 7646 return (1); 7647 } 7648 free(opts->queues.qname); 7649 } 7650 if (opts->queues.pqname != NULL) { 7651 if (strlcpy(r->pqname, opts->queues.pqname, 7652 sizeof(r->pqname)) >= sizeof(r->pqname)) { 7653 yyerror("rule pqname too long (max " 7654 "%d chars)", sizeof(r->pqname)-1); 7655 return (1); 7656 } 7657 free(opts->queues.pqname); 7658 } 7659 7660 if (opts->fragment) 7661 r->rule_flag |= PFRULE_FRAGMENT; 7662 r->allow_opts = opts->allowopts; 7663 7664 return (0); 7665 } 7666