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, *topfile; 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 validate_range(uint8_t, uint16_t, uint16_t); 371 int disallow_table(struct node_host *, const char *); 372 int disallow_urpf_failed(struct node_host *, const char *); 373 int disallow_alias(struct node_host *, const char *); 374 int rule_consistent(struct pfctl_rule *, int); 375 int filter_consistent(struct pfctl_rule *, int); 376 int nat_consistent(struct pfctl_rule *); 377 int rdr_consistent(struct pfctl_rule *); 378 int process_tabledef(char *, struct table_opts *, int); 379 void expand_label_str(char *, size_t, const char *, const char *); 380 void expand_label_if(const char *, char *, size_t, const char *); 381 void expand_label_addr(const char *, char *, size_t, sa_family_t, 382 struct pf_rule_addr *); 383 void expand_label_port(const char *, char *, size_t, 384 struct pf_rule_addr *); 385 void expand_label_proto(const char *, char *, size_t, u_int8_t); 386 void expand_label_nr(const char *, char *, size_t, 387 struct pfctl_rule *); 388 void expand_eth_rule(struct pfctl_eth_rule *, 389 struct node_if *, struct node_etherproto *, 390 struct node_mac *, struct node_mac *, 391 struct node_host *, struct node_host *, const char *, 392 const char *); 393 int apply_rdr_ports(struct pfctl_rule *r, struct pfctl_pool *, struct redirspec *); 394 int apply_nat_ports(struct pfctl_pool *, struct redirspec *); 395 int apply_redirspec(struct pfctl_pool *, struct redirspec *); 396 int check_binat_redirspec(struct node_host *, struct pfctl_rule *, int); 397 void add_binat_rdr_rule(struct pfctl_rule *, struct redirspec *, 398 struct node_host *, struct pfctl_rule *, struct redirspec **, 399 struct node_host **); 400 void expand_rule(struct pfctl_rule *, bool, struct node_if *, 401 struct redirspec *, struct redirspec *, struct redirspec *, 402 struct node_proto *, struct node_os *, struct node_host *, 403 struct node_port *, struct node_host *, struct node_port *, 404 struct node_uid *, struct node_gid *, struct node_if *, 405 struct node_icmp *, const char *); 406 int expand_altq(struct pf_altq *, struct node_if *, 407 struct node_queue *, struct node_queue_bw bwspec, 408 struct node_queue_opt *); 409 int expand_queue(struct pf_altq *, struct node_if *, 410 struct node_queue *, struct node_queue_bw, 411 struct node_queue_opt *); 412 int expand_skip_interface(struct node_if *); 413 414 int check_rulestate(int); 415 int getservice(char *); 416 int rule_label(struct pfctl_rule *, char *s[PF_RULE_MAX_LABEL_COUNT]); 417 int eth_rule_label(struct pfctl_eth_rule *, char *s[PF_RULE_MAX_LABEL_COUNT]); 418 int rt_tableid_max(void); 419 420 void mv_rules(struct pfctl_ruleset *, struct pfctl_ruleset *); 421 void mv_eth_rules(struct pfctl_eth_ruleset *, struct pfctl_eth_ruleset *); 422 void decide_address_family(struct node_host *, sa_family_t *); 423 void remove_invalid_hosts(struct node_host **, sa_family_t *); 424 int invalid_redirect(struct node_host *, sa_family_t); 425 u_int16_t parseicmpspec(char *, sa_family_t); 426 int kw_casecmp(const void *, const void *); 427 int map_tos(char *string, int *); 428 int filteropts_to_rule(struct pfctl_rule *, struct filter_opts *); 429 struct node_mac* node_mac_from_string(const char *); 430 struct node_mac* node_mac_from_string_masklen(const char *, int); 431 struct node_mac* node_mac_from_string_mask(const char *, const char *); 432 433 static TAILQ_HEAD(loadanchorshead, loadanchors) 434 loadanchorshead = TAILQ_HEAD_INITIALIZER(loadanchorshead); 435 436 struct loadanchors { 437 TAILQ_ENTRY(loadanchors) entries; 438 char *anchorname; 439 char *filename; 440 }; 441 442 typedef struct { 443 union { 444 int64_t number; 445 double probability; 446 int i; 447 char *string; 448 u_int rtableid; 449 struct { 450 u_int8_t b1; 451 u_int8_t b2; 452 u_int16_t w; 453 u_int16_t w2; 454 } b; 455 struct range range; 456 struct node_if *interface; 457 struct node_proto *proto; 458 struct node_etherproto *etherproto; 459 struct node_icmp *icmp; 460 struct node_host *host; 461 struct node_os *os; 462 struct node_port *port; 463 struct node_uid *uid; 464 struct node_gid *gid; 465 struct node_state_opt *state_opt; 466 struct peer peer; 467 struct { 468 struct peer src, dst; 469 struct node_os *src_os; 470 } fromto; 471 struct { 472 struct node_mac *src; 473 struct node_mac *dst; 474 } etherfromto; 475 struct node_mac *mac; 476 struct { 477 struct node_mac *mac; 478 } etheraddr; 479 char *bridge_to; 480 struct { 481 struct redirspec *redirspec; 482 u_int8_t rt; 483 } route; 484 struct redirspec *redirspec; 485 struct { 486 int action; 487 struct node_state_opt *options; 488 } keep_state; 489 struct { 490 u_int8_t log; 491 u_int8_t logif; 492 u_int8_t quick; 493 } logquick; 494 struct { 495 int neg; 496 char *name; 497 } tagged; 498 struct pf_poolhashkey *hashkey; 499 struct node_queue *queue; 500 struct node_queue_opt queue_options; 501 struct node_queue_bw queue_bwspec; 502 struct node_qassign qassign; 503 struct filter_opts filter_opts; 504 struct antispoof_opts antispoof_opts; 505 struct queue_opts queue_opts; 506 struct scrub_opts scrub_opts; 507 struct table_opts table_opts; 508 struct pool_opts pool_opts; 509 struct node_hfsc_opts hfsc_opts; 510 struct node_fairq_opts fairq_opts; 511 struct codel_opts codel_opts; 512 struct pfctl_watermarks *watermarks; 513 } v; 514 int lineno; 515 } YYSTYPE; 516 517 #define PPORT_RANGE 1 518 #define PPORT_STAR 2 519 int parseport(char *, struct range *r, int); 520 521 #define DYNIF_MULTIADDR(addr) ((addr).type == PF_ADDR_DYNIFTL && \ 522 (!((addr).iflags & PFI_AFLAG_NOALIAS) || \ 523 !isdigit((addr).v.ifname[strlen((addr).v.ifname)-1]))) 524 525 %} 526 527 %token PASS BLOCK MATCH SCRUB RETURN IN OS OUT LOG QUICK ON FROM TO FLAGS 528 %token RETURNRST RETURNICMP RETURNICMP6 PROTO INET INET6 ALL ANY ICMPTYPE 529 %token ICMP6TYPE CODE KEEP MODULATE STATE PORT RDR NAT BINAT ARROW NODF 530 %token MINTTL ERROR ALLOWOPTS FASTROUTE FILENAME ROUTETO DUPTO REPLYTO NO LABEL 531 %token NOROUTE URPFFAILED FRAGMENT USER GROUP MAXMSS MAXIMUM TTL TOS DROP TABLE 532 %token REASSEMBLE ANCHOR NATANCHOR RDRANCHOR BINATANCHOR 533 %token SET OPTIMIZATION TIMEOUT LIMIT LOGINTERFACE BLOCKPOLICY FAILPOLICY 534 %token RANDOMID REQUIREORDER SYNPROXY FINGERPRINTS NOSYNC DEBUG SKIP HOSTID 535 %token ANTISPOOF FOR INCLUDE KEEPCOUNTERS SYNCOOKIES L3 MATCHES 536 %token ETHER 537 %token BITMASK RANDOM SOURCEHASH ROUNDROBIN STATICPORT PROBABILITY MAPEPORTSET 538 %token ALTQ CBQ CODEL PRIQ HFSC FAIRQ BANDWIDTH TBRSIZE LINKSHARE REALTIME 539 %token UPPERLIMIT QUEUE PRIORITY QLIMIT HOGS BUCKETS RTABLE TARGET INTERVAL 540 %token DNPIPE DNQUEUE RIDENTIFIER 541 %token LOAD RULESET_OPTIMIZATION PRIO 542 %token STICKYADDRESS ENDPI MAXSRCSTATES MAXSRCNODES SOURCETRACK GLOBAL RULE 543 %token MAXSRCCONN MAXSRCCONNRATE OVERLOAD FLUSH SLOPPY PFLOW ALLOW_RELATED 544 %token TAGGED TAG IFBOUND FLOATING STATEPOLICY STATEDEFAULTS ROUTE SETTOS 545 %token DIVERTTO DIVERTREPLY BRIDGE_TO RECEIVEDON NE LE GE AFTO NATTO RDRTO 546 %token BINATTO MAXPKTRATE MAXPKTSIZE 547 %token <v.string> STRING 548 %token <v.number> NUMBER 549 %token <v.i> PORTBINARY 550 %type <v.interface> interface if_list if_item_not if_item 551 %type <v.number> number icmptype icmp6type uid gid 552 %type <v.number> tos not yesno optnodf 553 %type <v.probability> probability 554 %type <v.i> no dir af fragcache optimizer syncookie_val 555 %type <v.i> sourcetrack flush unaryop statelock 556 %type <v.i> etherprotoval 557 %type <v.b> action nataction natpasslog scrubaction 558 %type <v.b> flags flag blockspec prio 559 %type <v.range> portplain portstar portrange 560 %type <v.hashkey> hashkey 561 %type <v.proto> proto proto_list proto_item 562 %type <v.number> protoval 563 %type <v.icmp> icmpspec 564 %type <v.icmp> icmp_list icmp_item 565 %type <v.icmp> icmp6_list icmp6_item 566 %type <v.number> reticmpspec reticmp6spec 567 %type <v.fromto> fromto l3fromto 568 %type <v.peer> ipportspec from to 569 %type <v.host> ipspec toipspec xhost host dynaddr host_list 570 %type <v.host> redir_host redir_host_list routespec 571 %type <v.host> route_host route_host_list 572 %type <v.os> os xos os_list 573 %type <v.port> portspec port_list port_item 574 %type <v.uid> uids uid_list uid_item 575 %type <v.gid> gids gid_list gid_item 576 %type <v.route> route 577 %type <v.redirspec> no_port_redirspec port_redirspec route_redirspec 578 %type <v.redirspec> binat_redirspec nat_redirspec 579 %type <v.string> label stringall tag anchorname 580 %type <v.string> string varstring numberstring 581 %type <v.keep_state> keep 582 %type <v.state_opt> state_opt_spec state_opt_list state_opt_item 583 %type <v.logquick> logquick quick log logopts logopt 584 %type <v.interface> antispoof_ifspc antispoof_iflst antispoof_if 585 %type <v.qassign> qname etherqname 586 %type <v.queue> qassign qassign_list qassign_item 587 %type <v.queue_options> scheduler 588 %type <v.number> cbqflags_list cbqflags_item 589 %type <v.number> priqflags_list priqflags_item 590 %type <v.hfsc_opts> hfscopts_list hfscopts_item hfsc_opts 591 %type <v.fairq_opts> fairqopts_list fairqopts_item fairq_opts 592 %type <v.codel_opts> codelopts_list codelopts_item codel_opts 593 %type <v.queue_bwspec> bandwidth 594 %type <v.filter_opts> filter_opts filter_opt filter_opts_l etherfilter_opts etherfilter_opt etherfilter_opts_l 595 %type <v.filter_opts> filter_sets filter_set filter_sets_l 596 %type <v.antispoof_opts> antispoof_opts antispoof_opt antispoof_opts_l 597 %type <v.queue_opts> queue_opts queue_opt queue_opts_l 598 %type <v.scrub_opts> scrub_opts scrub_opt scrub_opts_l 599 %type <v.table_opts> table_opts table_opt table_opts_l 600 %type <v.pool_opts> pool_opts pool_opt pool_opts_l 601 %type <v.tagged> tagged 602 %type <v.rtableid> rtable 603 %type <v.watermarks> syncookie_opts 604 %type <v.etherproto> etherproto etherproto_list etherproto_item 605 %type <v.etherfromto> etherfromto 606 %type <v.etheraddr> etherfrom etherto 607 %type <v.bridge_to> bridge 608 %type <v.mac> xmac mac mac_list macspec 609 %% 610 611 ruleset : /* empty */ 612 | ruleset include '\n' 613 | ruleset '\n' 614 | ruleset option '\n' 615 | ruleset etherrule '\n' 616 | ruleset etheranchorrule '\n' 617 | ruleset scrubrule '\n' 618 | ruleset natrule '\n' 619 | ruleset binatrule '\n' 620 | ruleset pfrule '\n' 621 | ruleset anchorrule '\n' 622 | ruleset loadrule '\n' 623 | ruleset altqif '\n' 624 | ruleset queuespec '\n' 625 | ruleset varset '\n' 626 | ruleset antispoof '\n' 627 | ruleset tabledef '\n' 628 | '{' fakeanchor '}' '\n'; 629 | ruleset error '\n' { file->errors++; } 630 ; 631 632 include : INCLUDE STRING { 633 struct file *nfile; 634 635 if ((nfile = pushfile($2, 0)) == NULL) { 636 yyerror("failed to include file %s", $2); 637 free($2); 638 YYERROR; 639 } 640 free($2); 641 642 file = nfile; 643 lungetc('\n'); 644 } 645 ; 646 647 /* 648 * apply to previouslys specified rule: must be careful to note 649 * what that is: pf or nat or binat or rdr 650 */ 651 fakeanchor : fakeanchor '\n' 652 | fakeanchor anchorrule '\n' 653 | fakeanchor binatrule '\n' 654 | fakeanchor natrule '\n' 655 | fakeanchor pfrule '\n' 656 | fakeanchor error '\n' 657 ; 658 659 optimizer : string { 660 if (!strcmp($1, "none")) 661 $$ = 0; 662 else if (!strcmp($1, "basic")) 663 $$ = PF_OPTIMIZE_BASIC; 664 else if (!strcmp($1, "profile")) 665 $$ = PF_OPTIMIZE_BASIC | PF_OPTIMIZE_PROFILE; 666 else { 667 yyerror("unknown ruleset-optimization %s", $1); 668 YYERROR; 669 } 670 } 671 ; 672 673 optnodf : /* empty */ { $$ = 0; } 674 | NODF { $$ = 1; } 675 ; 676 677 option : SET REASSEMBLE yesno optnodf { 678 if (check_rulestate(PFCTL_STATE_OPTION)) 679 YYERROR; 680 pfctl_set_reassembly(pf, $3, $4); 681 } 682 | SET OPTIMIZATION STRING { 683 if (check_rulestate(PFCTL_STATE_OPTION)) { 684 free($3); 685 YYERROR; 686 } 687 if (pfctl_set_optimization(pf, $3) != 0) { 688 yyerror("unknown optimization %s", $3); 689 free($3); 690 YYERROR; 691 } 692 free($3); 693 } 694 | SET RULESET_OPTIMIZATION optimizer { 695 if (!(pf->opts & PF_OPT_OPTIMIZE)) { 696 pf->opts |= PF_OPT_OPTIMIZE; 697 pf->optimize = $3; 698 } 699 } 700 | SET TIMEOUT timeout_spec 701 | SET TIMEOUT '{' optnl timeout_list '}' 702 | SET LIMIT limit_spec 703 | SET LIMIT '{' optnl limit_list '}' 704 | SET LOGINTERFACE stringall { 705 if (check_rulestate(PFCTL_STATE_OPTION)) { 706 free($3); 707 YYERROR; 708 } 709 if (pfctl_set_logif(pf, $3) != 0) { 710 yyerror("error setting loginterface %s", $3); 711 free($3); 712 YYERROR; 713 } 714 free($3); 715 } 716 | SET HOSTID number { 717 if ($3 == 0 || $3 > UINT_MAX) { 718 yyerror("hostid must be non-zero"); 719 YYERROR; 720 } 721 pfctl_set_hostid(pf, $3); 722 } 723 | SET BLOCKPOLICY DROP { 724 if (pf->opts & PF_OPT_VERBOSE) 725 printf("set block-policy drop\n"); 726 if (check_rulestate(PFCTL_STATE_OPTION)) 727 YYERROR; 728 blockpolicy = PFRULE_DROP; 729 } 730 | SET BLOCKPOLICY RETURN { 731 if (pf->opts & PF_OPT_VERBOSE) 732 printf("set block-policy return\n"); 733 if (check_rulestate(PFCTL_STATE_OPTION)) 734 YYERROR; 735 blockpolicy = PFRULE_RETURN; 736 } 737 | SET FAILPOLICY DROP { 738 if (pf->opts & PF_OPT_VERBOSE) 739 printf("set fail-policy drop\n"); 740 if (check_rulestate(PFCTL_STATE_OPTION)) 741 YYERROR; 742 failpolicy = PFRULE_DROP; 743 } 744 | SET FAILPOLICY RETURN { 745 if (pf->opts & PF_OPT_VERBOSE) 746 printf("set fail-policy return\n"); 747 if (check_rulestate(PFCTL_STATE_OPTION)) 748 YYERROR; 749 failpolicy = PFRULE_RETURN; 750 } 751 | SET REQUIREORDER yesno { 752 if (pf->opts & PF_OPT_VERBOSE) 753 printf("set require-order %s\n", 754 $3 == 1 ? "yes" : "no"); 755 require_order = $3; 756 } 757 | SET FINGERPRINTS STRING { 758 if (pf->opts & PF_OPT_VERBOSE) 759 printf("set fingerprints \"%s\"\n", $3); 760 if (check_rulestate(PFCTL_STATE_OPTION)) { 761 free($3); 762 YYERROR; 763 } 764 if (!pf->anchor->name[0]) { 765 if (pfctl_file_fingerprints(pf->dev, 766 pf->opts, $3)) { 767 yyerror("error loading " 768 "fingerprints %s", $3); 769 free($3); 770 YYERROR; 771 } 772 } 773 free($3); 774 } 775 | SET STATEPOLICY statelock { 776 if (pf->opts & PF_OPT_VERBOSE) 777 switch ($3) { 778 case 0: 779 printf("set state-policy floating\n"); 780 break; 781 case PFRULE_IFBOUND: 782 printf("set state-policy if-bound\n"); 783 break; 784 } 785 default_statelock = $3; 786 } 787 | SET DEBUG STRING { 788 if (check_rulestate(PFCTL_STATE_OPTION)) { 789 free($3); 790 YYERROR; 791 } 792 if (pfctl_do_set_debug(pf, $3) != 0) { 793 yyerror("error setting debuglevel %s", $3); 794 free($3); 795 YYERROR; 796 } 797 free($3); 798 } 799 | SET SKIP interface { 800 if (expand_skip_interface($3) != 0) { 801 yyerror("error setting skip interface(s)"); 802 YYERROR; 803 } 804 } 805 | SET STATEDEFAULTS state_opt_list { 806 if (keep_state_defaults != NULL) { 807 yyerror("cannot redefine state-defaults"); 808 YYERROR; 809 } 810 keep_state_defaults = $3; 811 } 812 | SET KEEPCOUNTERS { 813 pf->keep_counters = true; 814 } 815 | SET SYNCOOKIES syncookie_val syncookie_opts { 816 if (pfctl_cfg_syncookies(pf, $3, $4)) { 817 yyerror("error setting syncookies"); 818 YYERROR; 819 } 820 } 821 ; 822 823 syncookie_val : STRING { 824 if (!strcmp($1, "never")) 825 $$ = PFCTL_SYNCOOKIES_NEVER; 826 else if (!strcmp($1, "adaptive")) 827 $$ = PFCTL_SYNCOOKIES_ADAPTIVE; 828 else if (!strcmp($1, "always")) 829 $$ = PFCTL_SYNCOOKIES_ALWAYS; 830 else { 831 yyerror("illegal value for syncookies"); 832 YYERROR; 833 } 834 } 835 ; 836 syncookie_opts : /* empty */ { $$ = NULL; } 837 | { 838 memset(&syncookie_opts, 0, sizeof(syncookie_opts)); 839 } '(' syncookie_opt_l ')' { $$ = &syncookie_opts; } 840 ; 841 842 syncookie_opt_l : syncookie_opt_l comma syncookie_opt 843 | syncookie_opt 844 ; 845 846 syncookie_opt : STRING STRING { 847 double val; 848 char *cp; 849 850 val = strtod($2, &cp); 851 if (cp == NULL || strcmp(cp, "%")) 852 YYERROR; 853 if (val <= 0 || val > 100) { 854 yyerror("illegal percentage value"); 855 YYERROR; 856 } 857 if (!strcmp($1, "start")) { 858 syncookie_opts.hi = val; 859 } else if (!strcmp($1, "end")) { 860 syncookie_opts.lo = val; 861 } else { 862 yyerror("illegal syncookie option"); 863 YYERROR; 864 } 865 } 866 ; 867 868 stringall : STRING { $$ = $1; } 869 | ALL { 870 if (($$ = strdup("all")) == NULL) { 871 err(1, "stringall: strdup"); 872 } 873 } 874 ; 875 876 string : STRING string { 877 if (asprintf(&$$, "%s %s", $1, $2) == -1) 878 err(1, "string: asprintf"); 879 free($1); 880 free($2); 881 } 882 | STRING 883 ; 884 885 varstring : numberstring varstring { 886 if (asprintf(&$$, "%s %s", $1, $2) == -1) 887 err(1, "string: asprintf"); 888 free($1); 889 free($2); 890 } 891 | numberstring 892 ; 893 894 numberstring : NUMBER { 895 char *s; 896 if (asprintf(&s, "%lld", (long long)$1) == -1) { 897 yyerror("string: asprintf"); 898 YYERROR; 899 } 900 $$ = s; 901 } 902 | STRING 903 ; 904 905 varset : STRING '=' varstring { 906 char *s = $1; 907 if (pf->opts & PF_OPT_VERBOSE) 908 printf("%s = \"%s\"\n", $1, $3); 909 while (*s++) { 910 if (isspace((unsigned char)*s)) { 911 yyerror("macro name cannot contain " 912 "whitespace"); 913 free($1); 914 free($3); 915 YYERROR; 916 } 917 } 918 if (symset($1, $3, 0) == -1) 919 err(1, "cannot store variable %s", $1); 920 free($1); 921 free($3); 922 } 923 ; 924 925 anchorname : STRING { 926 if ($1[0] == '\0') { 927 free($1); 928 yyerror("anchor name must not be empty"); 929 YYERROR; 930 } 931 if (strlen(pf->anchor->path) + 1 + 932 strlen($1) >= PATH_MAX) { 933 free($1); 934 yyerror("anchor name is longer than %u", 935 PATH_MAX - 1); 936 YYERROR; 937 } 938 if ($1[0] == '_' || strstr($1, "/_") != NULL) { 939 free($1); 940 yyerror("anchor names beginning with '_' " 941 "are reserved for internal use"); 942 YYERROR; 943 } 944 $$ = $1; 945 } 946 | /* empty */ { $$ = NULL; } 947 ; 948 949 pfa_anchorlist : /* empty */ 950 | pfa_anchorlist '\n' 951 | pfa_anchorlist pfrule '\n' 952 | pfa_anchorlist anchorrule '\n' 953 | pfa_anchorlist include '\n' 954 ; 955 956 pfa_anchor : '{' 957 { 958 char ta[PF_ANCHOR_NAME_SIZE]; 959 struct pfctl_ruleset *rs; 960 961 /* stepping into a brace anchor */ 962 if (pf->asd >= PFCTL_ANCHOR_STACK_DEPTH) 963 errx(1, "pfa_anchor: anchors too deep"); 964 pf->asd++; 965 pf->bn++; 966 967 /* 968 * Anchor contents are parsed before the anchor rule 969 * production completes, so we don't know the real 970 * location yet. Create a holding ruleset in the root; 971 * contents will be moved afterwards. 972 */ 973 snprintf(ta, PF_ANCHOR_NAME_SIZE, "_%d", pf->bn); 974 rs = pf_find_or_create_ruleset(ta); 975 if (rs == NULL) 976 err(1, "pfa_anchor: pf_find_or_create_ruleset"); 977 pf->astack[pf->asd] = rs->anchor; 978 pf->anchor = rs->anchor; 979 } '\n' pfa_anchorlist '}' 980 { 981 pf->alast = pf->anchor; 982 pf->asd--; 983 pf->anchor = pf->astack[pf->asd]; 984 } 985 | /* empty */ 986 ; 987 988 anchorrule : ANCHOR anchorname dir quick interface af proto fromto 989 filter_opts pfa_anchor 990 { 991 struct pfctl_rule r; 992 struct node_proto *proto; 993 994 if (check_rulestate(PFCTL_STATE_FILTER)) { 995 if ($2) 996 free($2); 997 YYERROR; 998 } 999 1000 pfctl_init_rule(&r); 1001 1002 if (pf->astack[pf->asd + 1]) { 1003 if ($2 && strchr($2, '/') != NULL) { 1004 free($2); 1005 yyerror("anchor paths containing '/' " 1006 "cannot be used for inline anchors."); 1007 YYERROR; 1008 } 1009 1010 /* Move inline rules into relative location. */ 1011 pfctl_anchor_setup(&r, 1012 &pf->astack[pf->asd]->ruleset, 1013 $2 ? $2 : pf->alast->name); 1014 1015 if (r.anchor == NULL) 1016 err(1, "anchorrule: unable to " 1017 "create ruleset"); 1018 1019 if (pf->alast != r.anchor) { 1020 if (r.anchor->match) { 1021 yyerror("inline anchor '%s' " 1022 "already exists", 1023 r.anchor->name); 1024 YYERROR; 1025 } 1026 mv_rules(&pf->alast->ruleset, 1027 &r.anchor->ruleset); 1028 } 1029 pf_remove_if_empty_ruleset(&pf->alast->ruleset); 1030 pf->alast = r.anchor; 1031 } else { 1032 if (!$2) { 1033 yyerror("anchors without explicit " 1034 "rules must specify a name"); 1035 YYERROR; 1036 } 1037 } 1038 r.direction = $3; 1039 r.quick = $4.quick; 1040 r.af = $6; 1041 1042 if ($9.flags.b1 || $9.flags.b2 || $8.src_os) { 1043 for (proto = $7; proto != NULL && 1044 proto->proto != IPPROTO_TCP; 1045 proto = proto->next) 1046 ; /* nothing */ 1047 if (proto == NULL && $7 != NULL) { 1048 if ($9.flags.b1 || $9.flags.b2) 1049 yyerror( 1050 "flags only apply to tcp"); 1051 if ($8.src_os) 1052 yyerror( 1053 "OS fingerprinting only " 1054 "applies to tcp"); 1055 YYERROR; 1056 } 1057 } 1058 1059 if (filteropts_to_rule(&r, &$9)) 1060 YYERROR; 1061 1062 if ($9.keep.action) { 1063 yyerror("cannot specify state handling " 1064 "on anchors"); 1065 YYERROR; 1066 } 1067 1068 decide_address_family($8.src.host, &r.af); 1069 decide_address_family($8.dst.host, &r.af); 1070 1071 expand_rule(&r, false, $5, NULL, NULL, NULL, 1072 $7, $8.src_os, $8.src.host, $8.src.port, $8.dst.host, 1073 $8.dst.port, $9.uid, $9.gid, $9.rcv, $9.icmpspec, 1074 pf->astack[pf->asd + 1] ? pf->alast->name : $2); 1075 free($2); 1076 pf->astack[pf->asd + 1] = NULL; 1077 } 1078 | NATANCHOR string interface af proto fromto rtable { 1079 struct pfctl_rule r; 1080 1081 if (check_rulestate(PFCTL_STATE_NAT)) { 1082 free($2); 1083 YYERROR; 1084 } 1085 1086 pfctl_init_rule(&r); 1087 1088 r.action = PF_NAT; 1089 r.af = $4; 1090 r.rtableid = $7; 1091 1092 decide_address_family($6.src.host, &r.af); 1093 decide_address_family($6.dst.host, &r.af); 1094 1095 expand_rule(&r, false, $3, NULL, NULL, NULL, 1096 $5, $6.src_os, $6.src.host, $6.src.port, $6.dst.host, 1097 $6.dst.port, 0, 0, 0, 0, $2); 1098 free($2); 1099 } 1100 | RDRANCHOR string interface af proto fromto rtable { 1101 struct pfctl_rule r; 1102 1103 if (check_rulestate(PFCTL_STATE_NAT)) { 1104 free($2); 1105 YYERROR; 1106 } 1107 1108 pfctl_init_rule(&r); 1109 1110 r.action = PF_RDR; 1111 r.af = $4; 1112 r.rtableid = $7; 1113 1114 decide_address_family($6.src.host, &r.af); 1115 decide_address_family($6.dst.host, &r.af); 1116 1117 if ($6.src.port != NULL) { 1118 yyerror("source port parameter not supported" 1119 " in rdr-anchor"); 1120 YYERROR; 1121 } 1122 if ($6.dst.port != NULL) { 1123 if ($6.dst.port->next != NULL) { 1124 yyerror("destination port list " 1125 "expansion not supported in " 1126 "rdr-anchor"); 1127 YYERROR; 1128 } else if ($6.dst.port->op != PF_OP_EQ) { 1129 yyerror("destination port operators" 1130 " not supported in rdr-anchor"); 1131 YYERROR; 1132 } 1133 r.dst.port[0] = $6.dst.port->port[0]; 1134 r.dst.port[1] = $6.dst.port->port[1]; 1135 r.dst.port_op = $6.dst.port->op; 1136 } 1137 1138 expand_rule(&r, false, $3, NULL, NULL, NULL, 1139 $5, $6.src_os, $6.src.host, $6.src.port, $6.dst.host, 1140 $6.dst.port, 0, 0, 0, 0, $2); 1141 free($2); 1142 } 1143 | BINATANCHOR string interface af proto fromto rtable { 1144 struct pfctl_rule r; 1145 1146 if (check_rulestate(PFCTL_STATE_NAT)) { 1147 free($2); 1148 YYERROR; 1149 } 1150 1151 pfctl_init_rule(&r); 1152 1153 r.action = PF_BINAT; 1154 r.af = $4; 1155 r.rtableid = $7; 1156 if ($5 != NULL) { 1157 if ($5->next != NULL) { 1158 yyerror("proto list expansion" 1159 " not supported in binat-anchor"); 1160 YYERROR; 1161 } 1162 r.proto = $5->proto; 1163 free($5); 1164 } 1165 1166 if ($6.src.host != NULL || $6.src.port != NULL || 1167 $6.dst.host != NULL || $6.dst.port != NULL) { 1168 yyerror("fromto parameter not supported" 1169 " in binat-anchor"); 1170 YYERROR; 1171 } 1172 1173 decide_address_family($6.src.host, &r.af); 1174 decide_address_family($6.dst.host, &r.af); 1175 1176 pfctl_append_rule(pf, &r, $2); 1177 free($2); 1178 } 1179 ; 1180 1181 loadrule : LOAD ANCHOR anchorname FROM string { 1182 struct loadanchors *loadanchor; 1183 1184 if ($3 == NULL) { 1185 yyerror("anchor name is missing"); 1186 YYERROR; 1187 } 1188 loadanchor = calloc(1, sizeof(struct loadanchors)); 1189 if (loadanchor == NULL) 1190 err(1, "loadrule: calloc"); 1191 if ((loadanchor->anchorname = malloc(MAXPATHLEN)) == 1192 NULL) 1193 err(1, "loadrule: malloc"); 1194 if (pf->anchor->name[0]) 1195 snprintf(loadanchor->anchorname, MAXPATHLEN, 1196 "%s/%s", pf->anchor->path, $3); 1197 else 1198 strlcpy(loadanchor->anchorname, $3, MAXPATHLEN); 1199 if ((loadanchor->filename = strdup($5)) == NULL) 1200 err(1, "loadrule: strdup"); 1201 1202 TAILQ_INSERT_TAIL(&loadanchorshead, loadanchor, 1203 entries); 1204 1205 free($3); 1206 free($5); 1207 }; 1208 1209 scrubaction : no SCRUB { 1210 $$.b2 = $$.w = 0; 1211 if ($1) 1212 $$.b1 = PF_NOSCRUB; 1213 else 1214 $$.b1 = PF_SCRUB; 1215 } 1216 ; 1217 1218 etherrule : ETHER action dir quick interface bridge etherproto etherfromto l3fromto etherfilter_opts 1219 { 1220 struct pfctl_eth_rule r; 1221 1222 bzero(&r, sizeof(r)); 1223 1224 if (check_rulestate(PFCTL_STATE_ETHER)) 1225 YYERROR; 1226 1227 r.action = $2.b1; 1228 r.direction = $3; 1229 r.quick = $4.quick; 1230 if ($10.tag != NULL) 1231 strlcpy(r.tagname, $10.tag, sizeof(r.tagname)); 1232 if ($10.match_tag) 1233 if (strlcpy(r.match_tagname, $10.match_tag, 1234 PF_TAG_NAME_SIZE) >= PF_TAG_NAME_SIZE) { 1235 yyerror("tag too long, max %u chars", 1236 PF_TAG_NAME_SIZE - 1); 1237 YYERROR; 1238 } 1239 r.match_tag_not = $10.match_tag_not; 1240 if ($10.queues.qname != NULL) 1241 strlcpy(r.qname, $10.queues.qname, sizeof(r.qname)); 1242 r.dnpipe = $10.dnpipe; 1243 r.dnflags = $10.free_flags; 1244 if (eth_rule_label(&r, $10.label)) 1245 YYERROR; 1246 for (int i = 0; i < PF_RULE_MAX_LABEL_COUNT; i++) 1247 free($10.label[i]); 1248 r.ridentifier = $10.ridentifier; 1249 1250 expand_eth_rule(&r, $5, $7, $8.src, $8.dst, 1251 $9.src.host, $9.dst.host, $6, ""); 1252 } 1253 ; 1254 1255 etherpfa_anchorlist : /* empty */ 1256 | etherpfa_anchorlist '\n' 1257 | etherpfa_anchorlist etherrule '\n' 1258 | etherpfa_anchorlist etheranchorrule '\n' 1259 ; 1260 1261 etherpfa_anchor : '{' 1262 { 1263 char ta[PF_ANCHOR_NAME_SIZE]; 1264 struct pfctl_eth_ruleset *rs; 1265 1266 /* steping into a brace anchor */ 1267 if (pf->asd >= PFCTL_ANCHOR_STACK_DEPTH) 1268 errx(1, "pfa_anchor: anchors too deep"); 1269 pf->asd++; 1270 pf->bn++; 1271 1272 /* create a holding ruleset in the root */ 1273 snprintf(ta, PF_ANCHOR_NAME_SIZE, "_%d", pf->bn); 1274 rs = pf_find_or_create_eth_ruleset(ta); 1275 if (rs == NULL) 1276 err(1, "etherpfa_anchor: pf_find_or_create_eth_ruleset"); 1277 pf->eastack[pf->asd] = rs->anchor; 1278 pf->eanchor = rs->anchor; 1279 } '\n' etherpfa_anchorlist '}' 1280 { 1281 pf->ealast = pf->eanchor; 1282 pf->asd--; 1283 pf->eanchor = pf->eastack[pf->asd]; 1284 } 1285 | /* empty */ 1286 ; 1287 1288 etheranchorrule : ETHER ANCHOR anchorname dir quick interface etherproto etherfromto l3fromto etherpfa_anchor 1289 { 1290 struct pfctl_eth_rule r; 1291 1292 if (check_rulestate(PFCTL_STATE_ETHER)) { 1293 free($3); 1294 YYERROR; 1295 } 1296 1297 if ($3 && ($3[0] == '_' || strstr($3, "/_") != NULL)) { 1298 free($3); 1299 yyerror("anchor names beginning with '_' " 1300 "are reserved for internal use"); 1301 YYERROR; 1302 } 1303 1304 memset(&r, 0, sizeof(r)); 1305 if (pf->eastack[pf->asd + 1]) { 1306 if ($3 && strchr($3, '/') != NULL) { 1307 free($3); 1308 yyerror("anchor paths containing '/' " 1309 "cannot be used for inline anchors."); 1310 YYERROR; 1311 } 1312 1313 /* Move inline rules into relative location. */ 1314 pfctl_eth_anchor_setup(pf, &r, 1315 &pf->eastack[pf->asd]->ruleset, 1316 $3 ? $3 : pf->ealast->name); 1317 if (r.anchor == NULL) 1318 err(1, "etheranchorrule: unable to " 1319 "create ruleset"); 1320 1321 if (pf->ealast != r.anchor) { 1322 if (r.anchor->match) { 1323 yyerror("inline anchor '%s' " 1324 "already exists", 1325 r.anchor->name); 1326 YYERROR; 1327 } 1328 mv_eth_rules(&pf->ealast->ruleset, 1329 &r.anchor->ruleset); 1330 } 1331 pf_remove_if_empty_eth_ruleset(&pf->ealast->ruleset); 1332 pf->ealast = r.anchor; 1333 } else { 1334 if (!$3) { 1335 yyerror("anchors without explicit " 1336 "rules must specify a name"); 1337 YYERROR; 1338 } 1339 } 1340 1341 r.direction = $4; 1342 r.quick = $5.quick; 1343 1344 expand_eth_rule(&r, $6, $7, $8.src, $8.dst, 1345 $9.src.host, $9.dst.host, NULL, 1346 pf->eastack[pf->asd + 1] ? pf->ealast->name : $3); 1347 1348 free($3); 1349 pf->eastack[pf->asd + 1] = NULL; 1350 } 1351 ; 1352 1353 etherfilter_opts : { 1354 bzero(&filter_opts, sizeof filter_opts); 1355 } 1356 etherfilter_opts_l 1357 { $$ = filter_opts; } 1358 | /* empty */ { 1359 bzero(&filter_opts, sizeof filter_opts); 1360 $$ = filter_opts; 1361 } 1362 ; 1363 1364 etherfilter_opts_l : etherfilter_opts_l etherfilter_opt 1365 | etherfilter_opt 1366 1367 etherfilter_opt : etherqname { 1368 if (filter_opts.queues.qname) { 1369 yyerror("queue cannot be redefined"); 1370 YYERROR; 1371 } 1372 filter_opts.queues = $1; 1373 } 1374 | RIDENTIFIER number { 1375 filter_opts.ridentifier = $2; 1376 } 1377 | label { 1378 if (filter_opts.labelcount >= PF_RULE_MAX_LABEL_COUNT) { 1379 yyerror("label can only be used %d times", PF_RULE_MAX_LABEL_COUNT); 1380 YYERROR; 1381 } 1382 filter_opts.label[filter_opts.labelcount++] = $1; 1383 } 1384 | TAG string { 1385 filter_opts.tag = $2; 1386 } 1387 | not TAGGED string { 1388 filter_opts.match_tag = $3; 1389 filter_opts.match_tag_not = $1; 1390 } 1391 | DNPIPE number { 1392 filter_opts.dnpipe = $2; 1393 filter_opts.free_flags |= PFRULE_DN_IS_PIPE; 1394 } 1395 | DNQUEUE number { 1396 filter_opts.dnpipe = $2; 1397 filter_opts.free_flags |= PFRULE_DN_IS_QUEUE; 1398 } 1399 ; 1400 1401 bridge : /* empty */ { 1402 $$ = NULL; 1403 } 1404 | BRIDGE_TO STRING { 1405 $$ = strdup($2); 1406 } 1407 ; 1408 1409 scrubrule : scrubaction dir logquick interface af proto fromto scrub_opts 1410 { 1411 struct pfctl_rule r; 1412 1413 if (check_rulestate(PFCTL_STATE_SCRUB)) 1414 YYERROR; 1415 1416 pfctl_init_rule(&r); 1417 1418 r.action = $1.b1; 1419 r.direction = $2; 1420 1421 r.log = $3.log; 1422 r.logif = $3.logif; 1423 if ($3.quick) { 1424 yyerror("scrub rules do not support 'quick'"); 1425 YYERROR; 1426 } 1427 1428 r.af = $5; 1429 if ($8.nodf) 1430 r.rule_flag |= PFRULE_NODF; 1431 if ($8.randomid) 1432 r.rule_flag |= PFRULE_RANDOMID; 1433 if ($8.reassemble_tcp) { 1434 if (r.direction != PF_INOUT) { 1435 yyerror("reassemble tcp rules can not " 1436 "specify direction"); 1437 YYERROR; 1438 } 1439 r.rule_flag |= PFRULE_REASSEMBLE_TCP; 1440 } 1441 if ($8.minttl) 1442 r.min_ttl = $8.minttl; 1443 if ($8.maxmss) 1444 r.max_mss = $8.maxmss; 1445 if ($8.marker & FOM_SETTOS) { 1446 r.rule_flag |= PFRULE_SET_TOS; 1447 r.set_tos = $8.settos; 1448 } 1449 if ($8.fragcache) 1450 r.rule_flag |= $8.fragcache; 1451 if ($8.match_tag) 1452 if (strlcpy(r.match_tagname, $8.match_tag, 1453 PF_TAG_NAME_SIZE) >= PF_TAG_NAME_SIZE) { 1454 yyerror("tag too long, max %u chars", 1455 PF_TAG_NAME_SIZE - 1); 1456 YYERROR; 1457 } 1458 r.match_tag_not = $8.match_tag_not; 1459 r.rtableid = $8.rtableid; 1460 1461 expand_rule(&r, false, $4, NULL, NULL, NULL, 1462 $6, $7.src_os, $7.src.host, $7.src.port, $7.dst.host, 1463 $7.dst.port, NULL, NULL, NULL, NULL, ""); 1464 } 1465 ; 1466 1467 scrub_opts : { 1468 bzero(&scrub_opts, sizeof scrub_opts); 1469 scrub_opts.rtableid = -1; 1470 } 1471 scrub_opts_l 1472 { $$ = scrub_opts; } 1473 | /* empty */ { 1474 bzero(&scrub_opts, sizeof scrub_opts); 1475 scrub_opts.rtableid = -1; 1476 $$ = scrub_opts; 1477 } 1478 ; 1479 1480 scrub_opts_l : scrub_opts_l comma scrub_opt 1481 | scrub_opt 1482 ; 1483 1484 scrub_opt : NODF { 1485 if (scrub_opts.nodf) { 1486 yyerror("no-df cannot be respecified"); 1487 YYERROR; 1488 } 1489 scrub_opts.nodf = 1; 1490 } 1491 | MINTTL NUMBER { 1492 if (scrub_opts.marker & FOM_MINTTL) { 1493 yyerror("min-ttl cannot be respecified"); 1494 YYERROR; 1495 } 1496 if ($2 < 0 || $2 > 255) { 1497 yyerror("illegal min-ttl value %d", $2); 1498 YYERROR; 1499 } 1500 scrub_opts.marker |= FOM_MINTTL; 1501 scrub_opts.minttl = $2; 1502 } 1503 | MAXMSS NUMBER { 1504 if (scrub_opts.marker & FOM_MAXMSS) { 1505 yyerror("max-mss cannot be respecified"); 1506 YYERROR; 1507 } 1508 if ($2 < 0 || $2 > 65535) { 1509 yyerror("illegal max-mss value %d", $2); 1510 YYERROR; 1511 } 1512 scrub_opts.marker |= FOM_MAXMSS; 1513 scrub_opts.maxmss = $2; 1514 } 1515 | SETTOS tos { 1516 if (scrub_opts.marker & FOM_SETTOS) { 1517 yyerror("set-tos cannot be respecified"); 1518 YYERROR; 1519 } 1520 scrub_opts.marker |= FOM_SETTOS; 1521 scrub_opts.settos = $2; 1522 } 1523 | fragcache { 1524 if (scrub_opts.marker & FOM_FRAGCACHE) { 1525 yyerror("fragcache cannot be respecified"); 1526 YYERROR; 1527 } 1528 scrub_opts.marker |= FOM_FRAGCACHE; 1529 scrub_opts.fragcache = $1; 1530 } 1531 | REASSEMBLE STRING { 1532 if (strcasecmp($2, "tcp") != 0) { 1533 yyerror("scrub reassemble supports only tcp, " 1534 "not '%s'", $2); 1535 free($2); 1536 YYERROR; 1537 } 1538 free($2); 1539 if (scrub_opts.reassemble_tcp) { 1540 yyerror("reassemble tcp cannot be respecified"); 1541 YYERROR; 1542 } 1543 scrub_opts.reassemble_tcp = 1; 1544 } 1545 | RANDOMID { 1546 if (scrub_opts.randomid) { 1547 yyerror("random-id cannot be respecified"); 1548 YYERROR; 1549 } 1550 scrub_opts.randomid = 1; 1551 } 1552 | RTABLE NUMBER { 1553 if ($2 < 0 || $2 > rt_tableid_max()) { 1554 yyerror("invalid rtable id"); 1555 YYERROR; 1556 } 1557 scrub_opts.rtableid = $2; 1558 } 1559 | not TAGGED string { 1560 scrub_opts.match_tag = $3; 1561 scrub_opts.match_tag_not = $1; 1562 } 1563 ; 1564 1565 fragcache : FRAGMENT REASSEMBLE { $$ = 0; /* default */ } 1566 | FRAGMENT NO REASSEMBLE { $$ = PFRULE_FRAGMENT_NOREASS; } 1567 ; 1568 1569 antispoof : ANTISPOOF logquick antispoof_ifspc af antispoof_opts { 1570 struct pfctl_rule r; 1571 struct node_host *h = NULL, *hh; 1572 struct node_if *i, *j; 1573 1574 if (check_rulestate(PFCTL_STATE_FILTER)) 1575 YYERROR; 1576 1577 for (i = $3; i; i = i->next) { 1578 pfctl_init_rule(&r); 1579 1580 r.action = PF_DROP; 1581 r.direction = PF_IN; 1582 r.log = $2.log; 1583 r.logif = $2.logif; 1584 r.quick = $2.quick; 1585 r.af = $4; 1586 r.ridentifier = $5.ridentifier; 1587 if (rule_label(&r, $5.label)) 1588 YYERROR; 1589 r.rtableid = $5.rtableid; 1590 j = calloc(1, sizeof(struct node_if)); 1591 if (j == NULL) 1592 err(1, "antispoof: calloc"); 1593 if (strlcpy(j->ifname, i->ifname, 1594 sizeof(j->ifname)) >= sizeof(j->ifname)) { 1595 free(j); 1596 yyerror("interface name too long"); 1597 YYERROR; 1598 } 1599 j->not = 1; 1600 if (i->dynamic) { 1601 h = calloc(1, sizeof(*h)); 1602 if (h == NULL) 1603 err(1, "address: calloc"); 1604 h->addr.type = PF_ADDR_DYNIFTL; 1605 set_ipmask(h, 128); 1606 if (strlcpy(h->addr.v.ifname, i->ifname, 1607 sizeof(h->addr.v.ifname)) >= 1608 sizeof(h->addr.v.ifname)) { 1609 free(h); 1610 yyerror( 1611 "interface name too long"); 1612 YYERROR; 1613 } 1614 hh = malloc(sizeof(*hh)); 1615 if (hh == NULL) 1616 err(1, "address: malloc"); 1617 bcopy(h, hh, sizeof(*hh)); 1618 h->addr.iflags = PFI_AFLAG_NETWORK; 1619 } else { 1620 h = ifa_lookup(j->ifname, 1621 PFI_AFLAG_NETWORK); 1622 hh = NULL; 1623 } 1624 1625 if (h != NULL) 1626 expand_rule(&r, false, j, NULL, NULL, 1627 NULL, NULL, NULL, h, NULL, NULL, 1628 NULL, NULL, NULL, NULL, NULL, ""); 1629 1630 if ((i->ifa_flags & IFF_LOOPBACK) == 0) { 1631 bzero(&r, sizeof(r)); 1632 1633 r.action = PF_DROP; 1634 r.direction = PF_IN; 1635 r.log = $2.log; 1636 r.logif = $2.logif; 1637 r.quick = $2.quick; 1638 r.af = $4; 1639 r.ridentifier = $5.ridentifier; 1640 if (rule_label(&r, $5.label)) 1641 YYERROR; 1642 r.rtableid = $5.rtableid; 1643 if (hh != NULL) 1644 h = hh; 1645 else 1646 h = ifa_lookup(i->ifname, 0); 1647 if (h != NULL) 1648 expand_rule(&r, false, NULL, 1649 NULL, NULL, NULL, NULL, 1650 NULL, h, NULL, NULL, NULL, 1651 NULL, NULL, NULL, NULL, ""); 1652 } else 1653 free(hh); 1654 } 1655 for (int i = 0; i < PF_RULE_MAX_LABEL_COUNT; i++) 1656 free($5.label[i]); 1657 } 1658 ; 1659 1660 antispoof_ifspc : FOR antispoof_if { $$ = $2; } 1661 | FOR '{' optnl antispoof_iflst '}' { $$ = $4; } 1662 ; 1663 1664 antispoof_iflst : antispoof_if optnl { $$ = $1; } 1665 | antispoof_iflst comma antispoof_if optnl { 1666 $1->tail->next = $3; 1667 $1->tail = $3; 1668 $$ = $1; 1669 } 1670 ; 1671 1672 antispoof_if : if_item { $$ = $1; } 1673 | '(' if_item ')' { 1674 $2->dynamic = 1; 1675 $$ = $2; 1676 } 1677 ; 1678 1679 antispoof_opts : { 1680 bzero(&antispoof_opts, sizeof antispoof_opts); 1681 antispoof_opts.rtableid = -1; 1682 } 1683 antispoof_opts_l 1684 { $$ = antispoof_opts; } 1685 | /* empty */ { 1686 bzero(&antispoof_opts, sizeof antispoof_opts); 1687 antispoof_opts.rtableid = -1; 1688 $$ = antispoof_opts; 1689 } 1690 ; 1691 1692 antispoof_opts_l : antispoof_opts_l antispoof_opt 1693 | antispoof_opt 1694 ; 1695 1696 antispoof_opt : label { 1697 if (antispoof_opts.labelcount >= PF_RULE_MAX_LABEL_COUNT) { 1698 yyerror("label can only be used %d times", PF_RULE_MAX_LABEL_COUNT); 1699 YYERROR; 1700 } 1701 antispoof_opts.label[antispoof_opts.labelcount++] = $1; 1702 } 1703 | RIDENTIFIER number { 1704 antispoof_opts.ridentifier = $2; 1705 } 1706 | RTABLE NUMBER { 1707 if ($2 < 0 || $2 > rt_tableid_max()) { 1708 yyerror("invalid rtable id"); 1709 YYERROR; 1710 } 1711 antispoof_opts.rtableid = $2; 1712 } 1713 ; 1714 1715 not : '!' { $$ = 1; } 1716 | /* empty */ { $$ = 0; } 1717 ; 1718 1719 tabledef : TABLE '<' STRING '>' table_opts { 1720 struct node_host *h, *nh; 1721 struct node_tinit *ti, *nti; 1722 1723 if (strlen($3) >= PF_TABLE_NAME_SIZE) { 1724 yyerror("table name too long, max %d chars", 1725 PF_TABLE_NAME_SIZE - 1); 1726 free($3); 1727 YYERROR; 1728 } 1729 if (pf->loadopt & PFCTL_FLAG_TABLE) 1730 if (process_tabledef($3, &$5, pf->opts)) { 1731 free($3); 1732 YYERROR; 1733 } 1734 free($3); 1735 for (ti = SIMPLEQ_FIRST(&$5.init_nodes); 1736 ti != SIMPLEQ_END(&$5.init_nodes); ti = nti) { 1737 if (ti->file) 1738 free(ti->file); 1739 for (h = ti->host; h != NULL; h = nh) { 1740 nh = h->next; 1741 free(h); 1742 } 1743 nti = SIMPLEQ_NEXT(ti, entries); 1744 free(ti); 1745 } 1746 } 1747 ; 1748 1749 table_opts : { 1750 bzero(&table_opts, sizeof table_opts); 1751 SIMPLEQ_INIT(&table_opts.init_nodes); 1752 } 1753 table_opts_l 1754 { $$ = table_opts; } 1755 | /* empty */ 1756 { 1757 bzero(&table_opts, sizeof table_opts); 1758 SIMPLEQ_INIT(&table_opts.init_nodes); 1759 $$ = table_opts; 1760 } 1761 ; 1762 1763 table_opts_l : table_opts_l table_opt 1764 | table_opt 1765 ; 1766 1767 table_opt : STRING { 1768 if (!strcmp($1, "const")) 1769 table_opts.flags |= PFR_TFLAG_CONST; 1770 else if (!strcmp($1, "persist")) 1771 table_opts.flags |= PFR_TFLAG_PERSIST; 1772 else if (!strcmp($1, "counters")) 1773 table_opts.flags |= PFR_TFLAG_COUNTERS; 1774 else { 1775 yyerror("invalid table option '%s'", $1); 1776 free($1); 1777 YYERROR; 1778 } 1779 free($1); 1780 } 1781 | '{' optnl '}' { table_opts.init_addr = 1; } 1782 | '{' optnl host_list '}' { 1783 struct node_host *n; 1784 struct node_tinit *ti; 1785 1786 for (n = $3; n != NULL; n = n->next) { 1787 switch (n->addr.type) { 1788 case PF_ADDR_ADDRMASK: 1789 continue; /* ok */ 1790 case PF_ADDR_RANGE: 1791 yyerror("address ranges are not " 1792 "permitted inside tables"); 1793 break; 1794 case PF_ADDR_DYNIFTL: 1795 yyerror("dynamic addresses are not " 1796 "permitted inside tables"); 1797 break; 1798 case PF_ADDR_TABLE: 1799 yyerror("tables cannot contain tables"); 1800 break; 1801 case PF_ADDR_NOROUTE: 1802 yyerror("\"no-route\" is not permitted " 1803 "inside tables"); 1804 break; 1805 case PF_ADDR_URPFFAILED: 1806 yyerror("\"urpf-failed\" is not " 1807 "permitted inside tables"); 1808 break; 1809 default: 1810 yyerror("unknown address type %d", 1811 n->addr.type); 1812 } 1813 YYERROR; 1814 } 1815 if (!(ti = calloc(1, sizeof(*ti)))) 1816 err(1, "table_opt: calloc"); 1817 ti->host = $3; 1818 SIMPLEQ_INSERT_TAIL(&table_opts.init_nodes, ti, 1819 entries); 1820 table_opts.init_addr = 1; 1821 } 1822 | FILENAME STRING { 1823 struct node_tinit *ti; 1824 1825 if (!(ti = calloc(1, sizeof(*ti)))) 1826 err(1, "table_opt: calloc"); 1827 ti->file = $2; 1828 SIMPLEQ_INSERT_TAIL(&table_opts.init_nodes, ti, 1829 entries); 1830 table_opts.init_addr = 1; 1831 } 1832 ; 1833 1834 altqif : ALTQ interface queue_opts QUEUE qassign { 1835 struct pf_altq a; 1836 1837 if (check_rulestate(PFCTL_STATE_QUEUE)) 1838 YYERROR; 1839 1840 memset(&a, 0, sizeof(a)); 1841 if ($3.scheduler.qtype == ALTQT_NONE) { 1842 yyerror("no scheduler specified!"); 1843 YYERROR; 1844 } 1845 a.scheduler = $3.scheduler.qtype; 1846 a.qlimit = $3.qlimit; 1847 a.tbrsize = $3.tbrsize; 1848 if ($5 == NULL && $3.scheduler.qtype != ALTQT_CODEL) { 1849 yyerror("no child queues specified"); 1850 YYERROR; 1851 } 1852 if (expand_altq(&a, $2, $5, $3.queue_bwspec, 1853 &$3.scheduler)) 1854 YYERROR; 1855 } 1856 ; 1857 1858 queuespec : QUEUE STRING interface queue_opts qassign { 1859 struct pf_altq a; 1860 1861 if (check_rulestate(PFCTL_STATE_QUEUE)) { 1862 free($2); 1863 YYERROR; 1864 } 1865 1866 memset(&a, 0, sizeof(a)); 1867 1868 if (strlcpy(a.qname, $2, sizeof(a.qname)) >= 1869 sizeof(a.qname)) { 1870 yyerror("queue name too long (max " 1871 "%d chars)", PF_QNAME_SIZE-1); 1872 free($2); 1873 YYERROR; 1874 } 1875 free($2); 1876 if ($4.tbrsize) { 1877 yyerror("cannot specify tbrsize for queue"); 1878 YYERROR; 1879 } 1880 if ($4.priority > 255) { 1881 yyerror("priority out of range: max 255"); 1882 YYERROR; 1883 } 1884 a.priority = $4.priority; 1885 a.qlimit = $4.qlimit; 1886 a.scheduler = $4.scheduler.qtype; 1887 if (expand_queue(&a, $3, $5, $4.queue_bwspec, 1888 &$4.scheduler)) { 1889 yyerror("errors in queue definition"); 1890 YYERROR; 1891 } 1892 } 1893 ; 1894 1895 queue_opts : { 1896 bzero(&queue_opts, sizeof queue_opts); 1897 queue_opts.priority = DEFAULT_PRIORITY; 1898 queue_opts.qlimit = DEFAULT_QLIMIT; 1899 queue_opts.scheduler.qtype = ALTQT_NONE; 1900 queue_opts.queue_bwspec.bw_percent = 100; 1901 } 1902 queue_opts_l 1903 { $$ = queue_opts; } 1904 | /* empty */ { 1905 bzero(&queue_opts, sizeof queue_opts); 1906 queue_opts.priority = DEFAULT_PRIORITY; 1907 queue_opts.qlimit = DEFAULT_QLIMIT; 1908 queue_opts.scheduler.qtype = ALTQT_NONE; 1909 queue_opts.queue_bwspec.bw_percent = 100; 1910 $$ = queue_opts; 1911 } 1912 ; 1913 1914 queue_opts_l : queue_opts_l queue_opt 1915 | queue_opt 1916 ; 1917 1918 queue_opt : BANDWIDTH bandwidth { 1919 if (queue_opts.marker & QOM_BWSPEC) { 1920 yyerror("bandwidth cannot be respecified"); 1921 YYERROR; 1922 } 1923 queue_opts.marker |= QOM_BWSPEC; 1924 queue_opts.queue_bwspec = $2; 1925 } 1926 | PRIORITY NUMBER { 1927 if (queue_opts.marker & QOM_PRIORITY) { 1928 yyerror("priority cannot be respecified"); 1929 YYERROR; 1930 } 1931 if ($2 < 0 || $2 > 255) { 1932 yyerror("priority out of range: max 255"); 1933 YYERROR; 1934 } 1935 queue_opts.marker |= QOM_PRIORITY; 1936 queue_opts.priority = $2; 1937 } 1938 | QLIMIT NUMBER { 1939 if (queue_opts.marker & QOM_QLIMIT) { 1940 yyerror("qlimit cannot be respecified"); 1941 YYERROR; 1942 } 1943 if ($2 < 0 || $2 > 65535) { 1944 yyerror("qlimit out of range: max 65535"); 1945 YYERROR; 1946 } 1947 queue_opts.marker |= QOM_QLIMIT; 1948 queue_opts.qlimit = $2; 1949 } 1950 | scheduler { 1951 if (queue_opts.marker & QOM_SCHEDULER) { 1952 yyerror("scheduler cannot be respecified"); 1953 YYERROR; 1954 } 1955 queue_opts.marker |= QOM_SCHEDULER; 1956 queue_opts.scheduler = $1; 1957 } 1958 | TBRSIZE NUMBER { 1959 if (queue_opts.marker & QOM_TBRSIZE) { 1960 yyerror("tbrsize cannot be respecified"); 1961 YYERROR; 1962 } 1963 if ($2 < 0 || $2 > UINT_MAX) { 1964 yyerror("tbrsize too big: max %u", UINT_MAX); 1965 YYERROR; 1966 } 1967 queue_opts.marker |= QOM_TBRSIZE; 1968 queue_opts.tbrsize = $2; 1969 } 1970 ; 1971 1972 bandwidth : STRING { 1973 double bps; 1974 char *cp; 1975 1976 $$.bw_percent = 0; 1977 1978 bps = strtod($1, &cp); 1979 if (cp != NULL) { 1980 if (strlen(cp) > 1) { 1981 char *cu = cp + 1; 1982 if (!strcmp(cu, "Bit") || 1983 !strcmp(cu, "B") || 1984 !strcmp(cu, "bit") || 1985 !strcmp(cu, "b")) { 1986 *cu = 0; 1987 } 1988 } 1989 if (!strcmp(cp, "b")) 1990 ; /* nothing */ 1991 else if (!strcmp(cp, "K")) 1992 bps *= 1000; 1993 else if (!strcmp(cp, "M")) 1994 bps *= 1000 * 1000; 1995 else if (!strcmp(cp, "G")) 1996 bps *= 1000 * 1000 * 1000; 1997 else if (!strcmp(cp, "%")) { 1998 if (bps < 0 || bps > 100) { 1999 yyerror("bandwidth spec " 2000 "out of range"); 2001 free($1); 2002 YYERROR; 2003 } 2004 $$.bw_percent = bps; 2005 bps = 0; 2006 } else { 2007 yyerror("unknown unit %s", cp); 2008 free($1); 2009 YYERROR; 2010 } 2011 } 2012 free($1); 2013 $$.bw_absolute = (u_int64_t)bps; 2014 } 2015 | NUMBER { 2016 if ($1 < 0 || $1 >= LLONG_MAX) { 2017 yyerror("bandwidth number too big"); 2018 YYERROR; 2019 } 2020 $$.bw_percent = 0; 2021 $$.bw_absolute = $1; 2022 } 2023 ; 2024 2025 scheduler : CBQ { 2026 $$.qtype = ALTQT_CBQ; 2027 $$.data.cbq_opts.flags = 0; 2028 } 2029 | CBQ '(' cbqflags_list ')' { 2030 $$.qtype = ALTQT_CBQ; 2031 $$.data.cbq_opts.flags = $3; 2032 } 2033 | PRIQ { 2034 $$.qtype = ALTQT_PRIQ; 2035 $$.data.priq_opts.flags = 0; 2036 } 2037 | PRIQ '(' priqflags_list ')' { 2038 $$.qtype = ALTQT_PRIQ; 2039 $$.data.priq_opts.flags = $3; 2040 } 2041 | HFSC { 2042 $$.qtype = ALTQT_HFSC; 2043 bzero(&$$.data.hfsc_opts, 2044 sizeof(struct node_hfsc_opts)); 2045 } 2046 | HFSC '(' hfsc_opts ')' { 2047 $$.qtype = ALTQT_HFSC; 2048 $$.data.hfsc_opts = $3; 2049 } 2050 | FAIRQ { 2051 $$.qtype = ALTQT_FAIRQ; 2052 bzero(&$$.data.fairq_opts, 2053 sizeof(struct node_fairq_opts)); 2054 } 2055 | FAIRQ '(' fairq_opts ')' { 2056 $$.qtype = ALTQT_FAIRQ; 2057 $$.data.fairq_opts = $3; 2058 } 2059 | CODEL { 2060 $$.qtype = ALTQT_CODEL; 2061 bzero(&$$.data.codel_opts, 2062 sizeof(struct codel_opts)); 2063 } 2064 | CODEL '(' codel_opts ')' { 2065 $$.qtype = ALTQT_CODEL; 2066 $$.data.codel_opts = $3; 2067 } 2068 ; 2069 2070 cbqflags_list : cbqflags_item { $$ |= $1; } 2071 | cbqflags_list comma cbqflags_item { $$ |= $3; } 2072 ; 2073 2074 cbqflags_item : STRING { 2075 if (!strcmp($1, "default")) 2076 $$ = CBQCLF_DEFCLASS; 2077 else if (!strcmp($1, "borrow")) 2078 $$ = CBQCLF_BORROW; 2079 else if (!strcmp($1, "red")) 2080 $$ = CBQCLF_RED; 2081 else if (!strcmp($1, "ecn")) 2082 $$ = CBQCLF_RED|CBQCLF_ECN; 2083 else if (!strcmp($1, "rio")) 2084 $$ = CBQCLF_RIO; 2085 else if (!strcmp($1, "codel")) 2086 $$ = CBQCLF_CODEL; 2087 else { 2088 yyerror("unknown cbq flag \"%s\"", $1); 2089 free($1); 2090 YYERROR; 2091 } 2092 free($1); 2093 } 2094 ; 2095 2096 priqflags_list : priqflags_item { $$ |= $1; } 2097 | priqflags_list comma priqflags_item { $$ |= $3; } 2098 ; 2099 2100 priqflags_item : STRING { 2101 if (!strcmp($1, "default")) 2102 $$ = PRCF_DEFAULTCLASS; 2103 else if (!strcmp($1, "red")) 2104 $$ = PRCF_RED; 2105 else if (!strcmp($1, "ecn")) 2106 $$ = PRCF_RED|PRCF_ECN; 2107 else if (!strcmp($1, "rio")) 2108 $$ = PRCF_RIO; 2109 else if (!strcmp($1, "codel")) 2110 $$ = PRCF_CODEL; 2111 else { 2112 yyerror("unknown priq flag \"%s\"", $1); 2113 free($1); 2114 YYERROR; 2115 } 2116 free($1); 2117 } 2118 ; 2119 2120 hfsc_opts : { 2121 bzero(&hfsc_opts, 2122 sizeof(struct node_hfsc_opts)); 2123 } 2124 hfscopts_list { 2125 $$ = hfsc_opts; 2126 } 2127 ; 2128 2129 hfscopts_list : hfscopts_item 2130 | hfscopts_list comma hfscopts_item 2131 ; 2132 2133 hfscopts_item : LINKSHARE bandwidth { 2134 if (hfsc_opts.linkshare.used) { 2135 yyerror("linkshare already specified"); 2136 YYERROR; 2137 } 2138 hfsc_opts.linkshare.m2 = $2; 2139 hfsc_opts.linkshare.used = 1; 2140 } 2141 | LINKSHARE '(' bandwidth comma NUMBER comma bandwidth ')' 2142 { 2143 if ($5 < 0 || $5 > INT_MAX) { 2144 yyerror("timing in curve out of range"); 2145 YYERROR; 2146 } 2147 if (hfsc_opts.linkshare.used) { 2148 yyerror("linkshare already specified"); 2149 YYERROR; 2150 } 2151 hfsc_opts.linkshare.m1 = $3; 2152 hfsc_opts.linkshare.d = $5; 2153 hfsc_opts.linkshare.m2 = $7; 2154 hfsc_opts.linkshare.used = 1; 2155 } 2156 | REALTIME bandwidth { 2157 if (hfsc_opts.realtime.used) { 2158 yyerror("realtime already specified"); 2159 YYERROR; 2160 } 2161 hfsc_opts.realtime.m2 = $2; 2162 hfsc_opts.realtime.used = 1; 2163 } 2164 | REALTIME '(' bandwidth comma NUMBER comma bandwidth ')' 2165 { 2166 if ($5 < 0 || $5 > INT_MAX) { 2167 yyerror("timing in curve out of range"); 2168 YYERROR; 2169 } 2170 if (hfsc_opts.realtime.used) { 2171 yyerror("realtime already specified"); 2172 YYERROR; 2173 } 2174 hfsc_opts.realtime.m1 = $3; 2175 hfsc_opts.realtime.d = $5; 2176 hfsc_opts.realtime.m2 = $7; 2177 hfsc_opts.realtime.used = 1; 2178 } 2179 | UPPERLIMIT bandwidth { 2180 if (hfsc_opts.upperlimit.used) { 2181 yyerror("upperlimit already specified"); 2182 YYERROR; 2183 } 2184 hfsc_opts.upperlimit.m2 = $2; 2185 hfsc_opts.upperlimit.used = 1; 2186 } 2187 | UPPERLIMIT '(' bandwidth comma NUMBER comma bandwidth ')' 2188 { 2189 if ($5 < 0 || $5 > INT_MAX) { 2190 yyerror("timing in curve out of range"); 2191 YYERROR; 2192 } 2193 if (hfsc_opts.upperlimit.used) { 2194 yyerror("upperlimit already specified"); 2195 YYERROR; 2196 } 2197 hfsc_opts.upperlimit.m1 = $3; 2198 hfsc_opts.upperlimit.d = $5; 2199 hfsc_opts.upperlimit.m2 = $7; 2200 hfsc_opts.upperlimit.used = 1; 2201 } 2202 | STRING { 2203 if (!strcmp($1, "default")) 2204 hfsc_opts.flags |= HFCF_DEFAULTCLASS; 2205 else if (!strcmp($1, "red")) 2206 hfsc_opts.flags |= HFCF_RED; 2207 else if (!strcmp($1, "ecn")) 2208 hfsc_opts.flags |= HFCF_RED|HFCF_ECN; 2209 else if (!strcmp($1, "rio")) 2210 hfsc_opts.flags |= HFCF_RIO; 2211 else if (!strcmp($1, "codel")) 2212 hfsc_opts.flags |= HFCF_CODEL; 2213 else { 2214 yyerror("unknown hfsc flag \"%s\"", $1); 2215 free($1); 2216 YYERROR; 2217 } 2218 free($1); 2219 } 2220 ; 2221 2222 fairq_opts : { 2223 bzero(&fairq_opts, 2224 sizeof(struct node_fairq_opts)); 2225 } 2226 fairqopts_list { 2227 $$ = fairq_opts; 2228 } 2229 ; 2230 2231 fairqopts_list : fairqopts_item 2232 | fairqopts_list comma fairqopts_item 2233 ; 2234 2235 fairqopts_item : LINKSHARE bandwidth { 2236 if (fairq_opts.linkshare.used) { 2237 yyerror("linkshare already specified"); 2238 YYERROR; 2239 } 2240 fairq_opts.linkshare.m2 = $2; 2241 fairq_opts.linkshare.used = 1; 2242 } 2243 | LINKSHARE '(' bandwidth number bandwidth ')' { 2244 if (fairq_opts.linkshare.used) { 2245 yyerror("linkshare already specified"); 2246 YYERROR; 2247 } 2248 fairq_opts.linkshare.m1 = $3; 2249 fairq_opts.linkshare.d = $4; 2250 fairq_opts.linkshare.m2 = $5; 2251 fairq_opts.linkshare.used = 1; 2252 } 2253 | HOGS bandwidth { 2254 fairq_opts.hogs_bw = $2; 2255 } 2256 | BUCKETS number { 2257 fairq_opts.nbuckets = $2; 2258 } 2259 | STRING { 2260 if (!strcmp($1, "default")) 2261 fairq_opts.flags |= FARF_DEFAULTCLASS; 2262 else if (!strcmp($1, "red")) 2263 fairq_opts.flags |= FARF_RED; 2264 else if (!strcmp($1, "ecn")) 2265 fairq_opts.flags |= FARF_RED|FARF_ECN; 2266 else if (!strcmp($1, "rio")) 2267 fairq_opts.flags |= FARF_RIO; 2268 else if (!strcmp($1, "codel")) 2269 fairq_opts.flags |= FARF_CODEL; 2270 else { 2271 yyerror("unknown fairq flag \"%s\"", $1); 2272 free($1); 2273 YYERROR; 2274 } 2275 free($1); 2276 } 2277 ; 2278 2279 codel_opts : { 2280 bzero(&codel_opts, 2281 sizeof(struct codel_opts)); 2282 } 2283 codelopts_list { 2284 $$ = codel_opts; 2285 } 2286 ; 2287 2288 codelopts_list : codelopts_item 2289 | codelopts_list comma codelopts_item 2290 ; 2291 2292 codelopts_item : INTERVAL number { 2293 if (codel_opts.interval) { 2294 yyerror("interval already specified"); 2295 YYERROR; 2296 } 2297 codel_opts.interval = $2; 2298 } 2299 | TARGET number { 2300 if (codel_opts.target) { 2301 yyerror("target already specified"); 2302 YYERROR; 2303 } 2304 codel_opts.target = $2; 2305 } 2306 | STRING { 2307 if (!strcmp($1, "ecn")) 2308 codel_opts.ecn = 1; 2309 else { 2310 yyerror("unknown codel option \"%s\"", $1); 2311 free($1); 2312 YYERROR; 2313 } 2314 free($1); 2315 } 2316 ; 2317 2318 qassign : /* empty */ { $$ = NULL; } 2319 | qassign_item { $$ = $1; } 2320 | '{' optnl qassign_list '}' { $$ = $3; } 2321 ; 2322 2323 qassign_list : qassign_item optnl { $$ = $1; } 2324 | qassign_list comma qassign_item optnl { 2325 $1->tail->next = $3; 2326 $1->tail = $3; 2327 $$ = $1; 2328 } 2329 ; 2330 2331 qassign_item : STRING { 2332 $$ = calloc(1, sizeof(struct node_queue)); 2333 if ($$ == NULL) 2334 err(1, "qassign_item: calloc"); 2335 if (strlcpy($$->queue, $1, sizeof($$->queue)) >= 2336 sizeof($$->queue)) { 2337 yyerror("queue name '%s' too long (max " 2338 "%d chars)", $1, sizeof($$->queue)-1); 2339 free($1); 2340 free($$); 2341 YYERROR; 2342 } 2343 free($1); 2344 $$->next = NULL; 2345 $$->tail = $$; 2346 } 2347 ; 2348 2349 pfrule : action dir logquick interface route af proto fromto 2350 filter_opts 2351 { 2352 struct pfctl_rule r; 2353 struct node_state_opt *o; 2354 struct node_proto *proto; 2355 int srctrack = 0; 2356 int statelock = 0; 2357 int adaptive = 0; 2358 int defaults = 0; 2359 2360 if (check_rulestate(PFCTL_STATE_FILTER)) 2361 YYERROR; 2362 2363 pfctl_init_rule(&r); 2364 2365 r.action = $1.b1; 2366 switch ($1.b2) { 2367 case PFRULE_RETURNRST: 2368 r.rule_flag |= PFRULE_RETURNRST; 2369 r.return_ttl = $1.w; 2370 break; 2371 case PFRULE_RETURNICMP: 2372 r.rule_flag |= PFRULE_RETURNICMP; 2373 r.return_icmp = $1.w; 2374 r.return_icmp6 = $1.w2; 2375 break; 2376 case PFRULE_RETURN: 2377 r.rule_flag |= PFRULE_RETURN; 2378 r.return_icmp = $1.w; 2379 r.return_icmp6 = $1.w2; 2380 break; 2381 } 2382 r.direction = $2; 2383 r.log = $3.log; 2384 r.logif = $3.logif; 2385 r.quick = $3.quick; 2386 r.af = $6; 2387 2388 if (filteropts_to_rule(&r, &$9)) 2389 YYERROR; 2390 2391 if ($9.flags.b1 || $9.flags.b2 || $8.src_os) { 2392 for (proto = $7; proto != NULL && 2393 proto->proto != IPPROTO_TCP; 2394 proto = proto->next) 2395 ; /* nothing */ 2396 if (proto == NULL && $7 != NULL) { 2397 if ($9.flags.b1 || $9.flags.b2) 2398 yyerror( 2399 "flags only apply to tcp"); 2400 if ($8.src_os) 2401 yyerror( 2402 "OS fingerprinting only " 2403 "apply to tcp"); 2404 YYERROR; 2405 } 2406 } 2407 2408 o = $9.keep.options; 2409 2410 /* 'keep state' by default on pass rules. */ 2411 if (!r.keep_state && !r.action && 2412 !($9.marker & FOM_KEEP)) { 2413 r.keep_state = PF_STATE_NORMAL; 2414 o = keep_state_defaults; 2415 defaults = 1; 2416 } 2417 2418 while (o) { 2419 struct node_state_opt *p = o; 2420 2421 switch (o->type) { 2422 case PF_STATE_OPT_MAX: 2423 if (r.max_states) { 2424 yyerror("state option 'max' " 2425 "multiple definitions"); 2426 YYERROR; 2427 } 2428 r.max_states = o->data.max_states; 2429 break; 2430 case PF_STATE_OPT_NOSYNC: 2431 if (r.rule_flag & PFRULE_NOSYNC) { 2432 yyerror("state option 'sync' " 2433 "multiple definitions"); 2434 YYERROR; 2435 } 2436 r.rule_flag |= PFRULE_NOSYNC; 2437 break; 2438 case PF_STATE_OPT_SRCTRACK: 2439 if (srctrack) { 2440 yyerror("state option " 2441 "'source-track' " 2442 "multiple definitions"); 2443 YYERROR; 2444 } 2445 srctrack = o->data.src_track; 2446 r.rule_flag |= PFRULE_SRCTRACK; 2447 break; 2448 case PF_STATE_OPT_MAX_SRC_STATES: 2449 if (r.max_src_states) { 2450 yyerror("state option " 2451 "'max-src-states' " 2452 "multiple definitions"); 2453 YYERROR; 2454 } 2455 if (o->data.max_src_states == 0) { 2456 yyerror("'max-src-states' must " 2457 "be > 0"); 2458 YYERROR; 2459 } 2460 r.max_src_states = 2461 o->data.max_src_states; 2462 r.rule_flag |= PFRULE_SRCTRACK; 2463 break; 2464 case PF_STATE_OPT_OVERLOAD: 2465 if (r.overload_tblname[0]) { 2466 yyerror("multiple 'overload' " 2467 "table definitions"); 2468 YYERROR; 2469 } 2470 if (strlcpy(r.overload_tblname, 2471 o->data.overload.tblname, 2472 PF_TABLE_NAME_SIZE) >= 2473 PF_TABLE_NAME_SIZE) { 2474 yyerror("state option: " 2475 "strlcpy"); 2476 YYERROR; 2477 } 2478 r.flush = o->data.overload.flush; 2479 break; 2480 case PF_STATE_OPT_MAX_SRC_CONN: 2481 if (r.max_src_conn) { 2482 yyerror("state option " 2483 "'max-src-conn' " 2484 "multiple definitions"); 2485 YYERROR; 2486 } 2487 if (o->data.max_src_conn == 0) { 2488 yyerror("'max-src-conn' " 2489 "must be > 0"); 2490 YYERROR; 2491 } 2492 r.max_src_conn = 2493 o->data.max_src_conn; 2494 r.rule_flag |= PFRULE_SRCTRACK | 2495 PFRULE_RULESRCTRACK; 2496 break; 2497 case PF_STATE_OPT_MAX_SRC_CONN_RATE: 2498 if (r.max_src_conn_rate.limit) { 2499 yyerror("state option " 2500 "'max-src-conn-rate' " 2501 "multiple definitions"); 2502 YYERROR; 2503 } 2504 if (!o->data.max_src_conn_rate.limit || 2505 !o->data.max_src_conn_rate.seconds) { 2506 yyerror("'max-src-conn-rate' " 2507 "values must be > 0"); 2508 YYERROR; 2509 } 2510 if (o->data.max_src_conn_rate.limit > 2511 PF_THRESHOLD_MAX) { 2512 yyerror("'max-src-conn-rate' " 2513 "maximum rate must be < %u", 2514 PF_THRESHOLD_MAX); 2515 YYERROR; 2516 } 2517 r.max_src_conn_rate.limit = 2518 o->data.max_src_conn_rate.limit; 2519 r.max_src_conn_rate.seconds = 2520 o->data.max_src_conn_rate.seconds; 2521 r.rule_flag |= PFRULE_SRCTRACK | 2522 PFRULE_RULESRCTRACK; 2523 break; 2524 case PF_STATE_OPT_MAX_SRC_NODES: 2525 if (r.max_src_nodes) { 2526 yyerror("state option " 2527 "'max-src-nodes' " 2528 "multiple definitions"); 2529 YYERROR; 2530 } 2531 if (o->data.max_src_nodes == 0) { 2532 yyerror("'max-src-nodes' must " 2533 "be > 0"); 2534 YYERROR; 2535 } 2536 r.max_src_nodes = 2537 o->data.max_src_nodes; 2538 r.rule_flag |= PFRULE_SRCTRACK | 2539 PFRULE_RULESRCTRACK; 2540 break; 2541 case PF_STATE_OPT_STATELOCK: 2542 if (statelock) { 2543 yyerror("state locking option: " 2544 "multiple definitions"); 2545 YYERROR; 2546 } 2547 statelock = 1; 2548 r.rule_flag |= o->data.statelock; 2549 break; 2550 case PF_STATE_OPT_SLOPPY: 2551 if (r.rule_flag & PFRULE_STATESLOPPY) { 2552 yyerror("state sloppy option: " 2553 "multiple definitions"); 2554 YYERROR; 2555 } 2556 r.rule_flag |= PFRULE_STATESLOPPY; 2557 break; 2558 case PF_STATE_OPT_PFLOW: 2559 if (r.rule_flag & PFRULE_PFLOW) { 2560 yyerror("state pflow option: " 2561 "multiple definitions"); 2562 YYERROR; 2563 } 2564 r.rule_flag |= PFRULE_PFLOW; 2565 break; 2566 case PF_STATE_OPT_ALLOW_RELATED: 2567 if (r.rule_flag & PFRULE_ALLOW_RELATED) { 2568 yyerror("state allow-related option: " 2569 "multiple definitions"); 2570 YYERROR; 2571 } 2572 r.rule_flag |= PFRULE_ALLOW_RELATED; 2573 break; 2574 case PF_STATE_OPT_TIMEOUT: 2575 if (o->data.timeout.number == 2576 PFTM_ADAPTIVE_START || 2577 o->data.timeout.number == 2578 PFTM_ADAPTIVE_END) 2579 adaptive = 1; 2580 if (r.timeout[o->data.timeout.number]) { 2581 yyerror("state timeout %s " 2582 "multiple definitions", 2583 pf_timeouts[o->data. 2584 timeout.number].name); 2585 YYERROR; 2586 } 2587 r.timeout[o->data.timeout.number] = 2588 o->data.timeout.seconds; 2589 } 2590 o = o->next; 2591 if (!defaults) 2592 free(p); 2593 } 2594 2595 /* 'flags S/SA' by default on stateful rules */ 2596 if (!r.action && !r.flags && !r.flagset && 2597 !$9.fragment && !($9.marker & FOM_FLAGS) && 2598 r.keep_state) { 2599 r.flags = parse_flags("S"); 2600 r.flagset = parse_flags("SA"); 2601 } 2602 if (!adaptive && r.max_states) { 2603 r.timeout[PFTM_ADAPTIVE_START] = 2604 (r.max_states / 10) * 6; 2605 r.timeout[PFTM_ADAPTIVE_END] = 2606 (r.max_states / 10) * 12; 2607 } 2608 if (r.rule_flag & PFRULE_SRCTRACK) { 2609 if (srctrack == PF_SRCTRACK_GLOBAL && 2610 r.max_src_nodes) { 2611 yyerror("'max-src-nodes' is " 2612 "incompatible with " 2613 "'source-track global'"); 2614 YYERROR; 2615 } 2616 if (srctrack == PF_SRCTRACK_GLOBAL && 2617 r.max_src_conn) { 2618 yyerror("'max-src-conn' is " 2619 "incompatible with " 2620 "'source-track global'"); 2621 YYERROR; 2622 } 2623 if (srctrack == PF_SRCTRACK_GLOBAL && 2624 r.max_src_conn_rate.seconds) { 2625 yyerror("'max-src-conn-rate' is " 2626 "incompatible with " 2627 "'source-track global'"); 2628 YYERROR; 2629 } 2630 if (r.timeout[PFTM_SRC_NODE] < 2631 r.max_src_conn_rate.seconds) 2632 r.timeout[PFTM_SRC_NODE] = 2633 r.max_src_conn_rate.seconds; 2634 r.rule_flag |= PFRULE_SRCTRACK; 2635 if (srctrack == PF_SRCTRACK_RULE) 2636 r.rule_flag |= PFRULE_RULESRCTRACK; 2637 } 2638 if (r.keep_state && !statelock) 2639 r.rule_flag |= default_statelock; 2640 2641 decide_address_family($8.src.host, &r.af); 2642 decide_address_family($8.dst.host, &r.af); 2643 2644 if ($5.rt) { 2645 if (!r.direction) { 2646 yyerror("direction must be explicit " 2647 "with rules that specify routing"); 2648 YYERROR; 2649 } 2650 r.rt = $5.rt; 2651 decide_address_family($5.redirspec->host, &r.af); 2652 if (!(r.rule_flag & PFRULE_AFTO)) 2653 remove_invalid_hosts(&($5.redirspec->host), &r.af); 2654 if ($5.redirspec->host == NULL) { 2655 yyerror("no routing address with " 2656 "matching address family found."); 2657 YYERROR; 2658 } 2659 } 2660 #ifdef __FreeBSD__ 2661 r.divert.port = $9.divert.port; 2662 #else 2663 if ((r.divert.port = $9.divert.port)) { 2664 if (r.direction == PF_OUT) { 2665 if ($9.divert.addr) { 2666 yyerror("address specified " 2667 "for outgoing divert"); 2668 YYERROR; 2669 } 2670 bzero(&r.divert.addr, 2671 sizeof(r.divert.addr)); 2672 } else { 2673 if (!$9.divert.addr) { 2674 yyerror("no address specified " 2675 "for incoming divert"); 2676 YYERROR; 2677 } 2678 if ($9.divert.addr->af != r.af) { 2679 yyerror("address family " 2680 "mismatch for divert"); 2681 YYERROR; 2682 } 2683 r.divert.addr = 2684 $9.divert.addr->addr.v.a.addr; 2685 } 2686 } 2687 #endif 2688 2689 if ($9.dnpipe || $9.dnrpipe) { 2690 r.dnpipe = $9.dnpipe; 2691 r.dnrpipe = $9.dnrpipe; 2692 if ($9.free_flags & PFRULE_DN_IS_PIPE) 2693 r.free_flags |= PFRULE_DN_IS_PIPE; 2694 else 2695 r.free_flags |= PFRULE_DN_IS_QUEUE; 2696 } 2697 2698 if ($9.marker & FOM_AFTO) { 2699 r.naf = $9.nat->af; 2700 } else { 2701 if ($9.nat) { 2702 if (!r.af && ! $9.nat->host->ifindex) 2703 r.af = $9.nat->host->af; 2704 remove_invalid_hosts(&($9.nat->host), &r.af); 2705 if (invalid_redirect($9.nat->host, r.af)) 2706 YYERROR; 2707 if ($9.nat->host->addr.type == PF_ADDR_DYNIFTL) { 2708 if (($9.nat->host = gen_dynnode($9.nat->host, r.af)) == NULL) 2709 err(1, "calloc"); 2710 } 2711 if (check_netmask($9.nat->host, r.af)) 2712 YYERROR; 2713 } 2714 if ($9.rdr) { 2715 if (!r.af && ! $9.rdr->host->ifindex) 2716 r.af = $9.rdr->host->af; 2717 remove_invalid_hosts(&($9.rdr->host), &r.af); 2718 if (invalid_redirect($9.rdr->host, r.af)) 2719 YYERROR; 2720 if ($9.rdr->host->addr.type == PF_ADDR_DYNIFTL) { 2721 if (($9.rdr->host = gen_dynnode($9.rdr->host, r.af)) == NULL) 2722 err(1, "calloc"); 2723 } 2724 if (check_netmask($9.rdr->host, r.af)) 2725 YYERROR; 2726 } 2727 } 2728 2729 expand_rule(&r, false, $4, $9.nat, $9.rdr, $5.redirspec, 2730 $7, $8.src_os, $8.src.host, $8.src.port, $8.dst.host, 2731 $8.dst.port, $9.uid, $9.gid, $9.rcv, $9.icmpspec, ""); 2732 } 2733 ; 2734 2735 filter_opts : { 2736 bzero(&filter_opts, sizeof filter_opts); 2737 filter_opts.rtableid = -1; 2738 } 2739 filter_opts_l 2740 { $$ = filter_opts; } 2741 | /* empty */ { 2742 bzero(&filter_opts, sizeof filter_opts); 2743 filter_opts.rtableid = -1; 2744 $$ = filter_opts; 2745 } 2746 ; 2747 2748 filter_opts_l : filter_opts_l filter_opt 2749 | filter_opt 2750 ; 2751 2752 filter_opt : USER uids { 2753 if (filter_opts.uid) 2754 $2->tail->next = filter_opts.uid; 2755 filter_opts.uid = $2; 2756 } 2757 | GROUP gids { 2758 if (filter_opts.gid) 2759 $2->tail->next = filter_opts.gid; 2760 filter_opts.gid = $2; 2761 } 2762 | flags { 2763 if (filter_opts.marker & FOM_FLAGS) { 2764 yyerror("flags cannot be redefined"); 2765 YYERROR; 2766 } 2767 filter_opts.marker |= FOM_FLAGS; 2768 filter_opts.flags.b1 |= $1.b1; 2769 filter_opts.flags.b2 |= $1.b2; 2770 filter_opts.flags.w |= $1.w; 2771 filter_opts.flags.w2 |= $1.w2; 2772 } 2773 | icmpspec { 2774 if (filter_opts.marker & FOM_ICMP) { 2775 yyerror("icmp-type cannot be redefined"); 2776 YYERROR; 2777 } 2778 filter_opts.marker |= FOM_ICMP; 2779 filter_opts.icmpspec = $1; 2780 } 2781 | PRIO NUMBER { 2782 if (filter_opts.marker & FOM_PRIO) { 2783 yyerror("prio cannot be redefined"); 2784 YYERROR; 2785 } 2786 if ($2 < 0 || $2 > PF_PRIO_MAX) { 2787 yyerror("prio must be 0 - %u", PF_PRIO_MAX); 2788 YYERROR; 2789 } 2790 filter_opts.marker |= FOM_PRIO; 2791 filter_opts.prio = $2; 2792 } 2793 | TOS tos { 2794 if (filter_opts.marker & FOM_TOS) { 2795 yyerror("tos cannot be redefined"); 2796 YYERROR; 2797 } 2798 filter_opts.marker |= FOM_TOS; 2799 filter_opts.tos = $2; 2800 } 2801 | keep { 2802 if (filter_opts.marker & FOM_KEEP) { 2803 yyerror("modulate or keep cannot be redefined"); 2804 YYERROR; 2805 } 2806 filter_opts.marker |= FOM_KEEP; 2807 filter_opts.keep.action = $1.action; 2808 filter_opts.keep.options = $1.options; 2809 } 2810 | RIDENTIFIER number { 2811 filter_opts.ridentifier = $2; 2812 } 2813 | FRAGMENT { 2814 filter_opts.fragment = 1; 2815 } 2816 | ALLOWOPTS { 2817 filter_opts.allowopts = 1; 2818 } 2819 | label { 2820 if (filter_opts.labelcount >= PF_RULE_MAX_LABEL_COUNT) { 2821 yyerror("label can only be used %d times", PF_RULE_MAX_LABEL_COUNT); 2822 YYERROR; 2823 } 2824 filter_opts.label[filter_opts.labelcount++] = $1; 2825 } 2826 | qname { 2827 if (filter_opts.queues.qname) { 2828 yyerror("queue cannot be redefined"); 2829 YYERROR; 2830 } 2831 filter_opts.queues = $1; 2832 } 2833 | DNPIPE number { 2834 filter_opts.dnpipe = $2; 2835 filter_opts.free_flags |= PFRULE_DN_IS_PIPE; 2836 } 2837 | DNPIPE '(' number ')' { 2838 filter_opts.dnpipe = $3; 2839 filter_opts.free_flags |= PFRULE_DN_IS_PIPE; 2840 } 2841 | DNPIPE '(' number comma number ')' { 2842 filter_opts.dnrpipe = $5; 2843 filter_opts.dnpipe = $3; 2844 filter_opts.free_flags |= PFRULE_DN_IS_PIPE; 2845 } 2846 | DNQUEUE number { 2847 filter_opts.dnpipe = $2; 2848 filter_opts.free_flags |= PFRULE_DN_IS_QUEUE; 2849 } 2850 | DNQUEUE '(' number comma number ')' { 2851 filter_opts.dnrpipe = $5; 2852 filter_opts.dnpipe = $3; 2853 filter_opts.free_flags |= PFRULE_DN_IS_QUEUE; 2854 } 2855 | DNQUEUE '(' number ')' { 2856 filter_opts.dnpipe = $3; 2857 filter_opts.free_flags |= PFRULE_DN_IS_QUEUE; 2858 } 2859 | TAG string { 2860 filter_opts.tag = $2; 2861 } 2862 | not TAGGED string { 2863 filter_opts.match_tag = $3; 2864 filter_opts.match_tag_not = $1; 2865 } 2866 | not RECEIVEDON if_item { 2867 if (filter_opts.rcv) { 2868 yyerror("cannot respecify received-on"); 2869 YYERROR; 2870 } 2871 filter_opts.rcv = $3; 2872 filter_opts.rcv->not = $1; 2873 } 2874 | PROBABILITY probability { 2875 double p; 2876 2877 p = floor($2 * UINT_MAX + 0.5); 2878 if (p < 0.0 || p > UINT_MAX) { 2879 yyerror("invalid probability: %lf", p); 2880 YYERROR; 2881 } 2882 filter_opts.prob = (u_int32_t)p; 2883 if (filter_opts.prob == 0) 2884 filter_opts.prob = 1; 2885 } 2886 | RTABLE NUMBER { 2887 if ($2 < 0 || $2 > rt_tableid_max()) { 2888 yyerror("invalid rtable id"); 2889 YYERROR; 2890 } 2891 filter_opts.rtableid = $2; 2892 } 2893 | DIVERTTO portplain { 2894 #ifdef __FreeBSD__ 2895 filter_opts.divert.port = $2.a; 2896 if (!filter_opts.divert.port) { 2897 yyerror("invalid divert port: %u", ntohs($2.a)); 2898 YYERROR; 2899 } 2900 #endif 2901 } 2902 | DIVERTTO STRING PORT portplain { 2903 #ifndef __FreeBSD__ 2904 if ((filter_opts.divert.addr = host($2, pf->opts)) == NULL) { 2905 yyerror("could not parse divert address: %s", 2906 $2); 2907 free($2); 2908 YYERROR; 2909 } 2910 #else 2911 if ($2) 2912 #endif 2913 free($2); 2914 filter_opts.divert.port = $4.a; 2915 if (!filter_opts.divert.port) { 2916 yyerror("invalid divert port: %u", ntohs($4.a)); 2917 YYERROR; 2918 } 2919 } 2920 | DIVERTREPLY { 2921 #ifdef __FreeBSD__ 2922 yyerror("divert-reply has no meaning in FreeBSD pf(4)"); 2923 YYERROR; 2924 #else 2925 filter_opts.divert.port = 1; /* some random value */ 2926 #endif 2927 } 2928 | SCRUB '(' scrub_opts ')' { 2929 filter_opts.nodf = $3.nodf; 2930 filter_opts.minttl = $3.minttl; 2931 if ($3.marker & FOM_SETTOS) { 2932 /* Old style rules are "scrub set-tos 0x42" 2933 * New style are "set tos 0x42 scrub (...)" 2934 * What is in "scrub(...)"" is unfortunately the 2935 * original scrub syntax so it would overwrite 2936 * "set tos" of a pass/match rule. 2937 */ 2938 filter_opts.settos = $3.settos; 2939 } 2940 filter_opts.randomid = $3.randomid; 2941 filter_opts.max_mss = $3.maxmss; 2942 if ($3.reassemble_tcp) 2943 filter_opts.marker |= FOM_SCRUB_TCP; 2944 filter_opts.marker |= $3.marker; 2945 } 2946 | NATTO port_redirspec { 2947 if (filter_opts.nat) { 2948 yyerror("cannot respecify nat-to/binat-to"); 2949 YYERROR; 2950 } 2951 filter_opts.nat = $2; 2952 } 2953 | RDRTO port_redirspec { 2954 if (filter_opts.rdr) { 2955 yyerror("cannot respecify rdr-to"); 2956 YYERROR; 2957 } 2958 filter_opts.rdr = $2; 2959 } 2960 | BINATTO port_redirspec { 2961 if (filter_opts.nat) { 2962 yyerror("cannot respecify nat-to/binat-to"); 2963 YYERROR; 2964 } 2965 filter_opts.nat = $2; 2966 filter_opts.nat->binat = 1; 2967 filter_opts.nat->pool_opts.staticport = 1; 2968 } 2969 | AFTO af FROM port_redirspec { 2970 if (filter_opts.nat) { 2971 yyerror("cannot respecify af-to"); 2972 YYERROR; 2973 } 2974 if ($2 == 0) { 2975 yyerror("no address family specified"); 2976 YYERROR; 2977 } 2978 2979 filter_opts.nat = $4; 2980 filter_opts.nat->af = $2; 2981 if ($4->af && $4->af != $2) { 2982 yyerror("af-to addresses must be in the " 2983 "target address family"); 2984 YYERROR; 2985 } 2986 filter_opts.marker |= FOM_AFTO; 2987 } 2988 | AFTO af FROM port_redirspec TO port_redirspec { 2989 if (filter_opts.nat) { 2990 yyerror("cannot respecify af-to"); 2991 YYERROR; 2992 } 2993 if ($2 == 0) { 2994 yyerror("no address family specified"); 2995 YYERROR; 2996 } 2997 filter_opts.nat = $4; 2998 filter_opts.nat->af = $2; 2999 filter_opts.rdr = $6; 3000 filter_opts.rdr->af = $2; 3001 if (($4->af && $4->host->af != $2) || 3002 ($6->af && $6->host->af != $2)) { 3003 yyerror("af-to addresses must be in the " 3004 "target address family"); 3005 YYERROR; 3006 } 3007 filter_opts.marker |= FOM_AFTO; 3008 } 3009 | MAXPKTRATE NUMBER '/' NUMBER { 3010 if ($2 < 0 || $2 > UINT_MAX || 3011 $4 < 0 || $4 > UINT_MAX) { 3012 yyerror("only positive values permitted"); 3013 YYERROR; 3014 } 3015 if (filter_opts.pktrate.limit) { 3016 yyerror("cannot respecify max-pkt-rate"); 3017 YYERROR; 3018 } 3019 filter_opts.pktrate.limit = $2; 3020 filter_opts.pktrate.seconds = $4; 3021 } 3022 | MAXPKTSIZE NUMBER { 3023 if ($2 < 0 || $2 > UINT16_MAX) { 3024 yyerror("only positive values permitted"); 3025 YYERROR; 3026 } 3027 filter_opts.max_pkt_size = $2; 3028 } 3029 | filter_sets 3030 ; 3031 3032 filter_sets : SET '(' filter_sets_l ')' { $$ = filter_opts; } 3033 | SET filter_set { $$ = filter_opts; } 3034 ; 3035 3036 filter_sets_l : filter_sets_l comma filter_set 3037 | filter_set 3038 ; 3039 3040 filter_set : prio { 3041 if (filter_opts.marker & FOM_SETPRIO) { 3042 yyerror("prio cannot be redefined"); 3043 YYERROR; 3044 } 3045 filter_opts.marker |= FOM_SETPRIO; 3046 filter_opts.set_prio[0] = $1.b1; 3047 filter_opts.set_prio[1] = $1.b2; 3048 } 3049 | TOS tos { 3050 if (filter_opts.marker & FOM_SETTOS) { 3051 yyerror("tos cannot be respecified"); 3052 YYERROR; 3053 } 3054 filter_opts.marker |= FOM_SETTOS; 3055 filter_opts.settos = $2; 3056 } 3057 prio : PRIO NUMBER { 3058 if ($2 < 0 || $2 > PF_PRIO_MAX) { 3059 yyerror("prio must be 0 - %u", PF_PRIO_MAX); 3060 YYERROR; 3061 } 3062 $$.b1 = $$.b2 = $2; 3063 } 3064 | PRIO '(' NUMBER comma NUMBER ')' { 3065 if ($3 < 0 || $3 > PF_PRIO_MAX || 3066 $5 < 0 || $5 > PF_PRIO_MAX) { 3067 yyerror("prio must be 0 - %u", PF_PRIO_MAX); 3068 YYERROR; 3069 } 3070 $$.b1 = $3; 3071 $$.b2 = $5; 3072 } 3073 ; 3074 3075 probability : STRING { 3076 char *e; 3077 double p = strtod($1, &e); 3078 3079 if (*e == '%') { 3080 p *= 0.01; 3081 e++; 3082 } 3083 if (*e) { 3084 yyerror("invalid probability: %s", $1); 3085 free($1); 3086 YYERROR; 3087 } 3088 free($1); 3089 $$ = p; 3090 } 3091 | NUMBER { 3092 $$ = (double)$1; 3093 } 3094 ; 3095 3096 3097 action : PASS { 3098 $$.b1 = PF_PASS; 3099 $$.b2 = failpolicy; 3100 $$.w = returnicmpdefault; 3101 $$.w2 = returnicmp6default; 3102 } 3103 | MATCH { $$.b1 = PF_MATCH; $$.b2 = $$.w = 0; } 3104 | BLOCK blockspec { $$ = $2; $$.b1 = PF_DROP; } 3105 ; 3106 3107 blockspec : /* empty */ { 3108 $$.b2 = blockpolicy; 3109 $$.w = returnicmpdefault; 3110 $$.w2 = returnicmp6default; 3111 } 3112 | DROP { 3113 $$.b2 = PFRULE_DROP; 3114 $$.w = 0; 3115 $$.w2 = 0; 3116 } 3117 | RETURNRST { 3118 $$.b2 = PFRULE_RETURNRST; 3119 $$.w = 0; 3120 $$.w2 = 0; 3121 } 3122 | RETURNRST '(' TTL NUMBER ')' { 3123 if ($4 < 0 || $4 > 255) { 3124 yyerror("illegal ttl value %d", $4); 3125 YYERROR; 3126 } 3127 $$.b2 = PFRULE_RETURNRST; 3128 $$.w = $4; 3129 $$.w2 = 0; 3130 } 3131 | RETURNICMP { 3132 $$.b2 = PFRULE_RETURNICMP; 3133 $$.w = returnicmpdefault; 3134 $$.w2 = returnicmp6default; 3135 } 3136 | RETURNICMP6 { 3137 $$.b2 = PFRULE_RETURNICMP; 3138 $$.w = returnicmpdefault; 3139 $$.w2 = returnicmp6default; 3140 } 3141 | RETURNICMP '(' reticmpspec ')' { 3142 $$.b2 = PFRULE_RETURNICMP; 3143 $$.w = $3; 3144 $$.w2 = returnicmpdefault; 3145 } 3146 | RETURNICMP6 '(' reticmp6spec ')' { 3147 $$.b2 = PFRULE_RETURNICMP; 3148 $$.w = returnicmpdefault; 3149 $$.w2 = $3; 3150 } 3151 | RETURNICMP '(' reticmpspec comma reticmp6spec ')' { 3152 $$.b2 = PFRULE_RETURNICMP; 3153 $$.w = $3; 3154 $$.w2 = $5; 3155 } 3156 | RETURN { 3157 $$.b2 = PFRULE_RETURN; 3158 $$.w = returnicmpdefault; 3159 $$.w2 = returnicmp6default; 3160 } 3161 ; 3162 3163 reticmpspec : STRING { 3164 if (!($$ = parseicmpspec($1, AF_INET))) { 3165 free($1); 3166 YYERROR; 3167 } 3168 free($1); 3169 } 3170 | NUMBER { 3171 u_int8_t icmptype; 3172 3173 if ($1 < 0 || $1 > 255) { 3174 yyerror("invalid icmp code %lu", $1); 3175 YYERROR; 3176 } 3177 icmptype = returnicmpdefault >> 8; 3178 $$ = (icmptype << 8 | $1); 3179 } 3180 ; 3181 3182 reticmp6spec : STRING { 3183 if (!($$ = parseicmpspec($1, AF_INET6))) { 3184 free($1); 3185 YYERROR; 3186 } 3187 free($1); 3188 } 3189 | NUMBER { 3190 u_int8_t icmptype; 3191 3192 if ($1 < 0 || $1 > 255) { 3193 yyerror("invalid icmp code %lu", $1); 3194 YYERROR; 3195 } 3196 icmptype = returnicmp6default >> 8; 3197 $$ = (icmptype << 8 | $1); 3198 } 3199 ; 3200 3201 dir : /* empty */ { $$ = PF_INOUT; } 3202 | IN { $$ = PF_IN; } 3203 | OUT { $$ = PF_OUT; } 3204 ; 3205 3206 quick : /* empty */ { $$.quick = 0; } 3207 | QUICK { $$.quick = 1; } 3208 ; 3209 3210 logquick : /* empty */ { $$.log = 0; $$.quick = 0; $$.logif = 0; } 3211 | log { $$ = $1; $$.quick = 0; } 3212 | QUICK { $$.quick = 1; $$.log = 0; $$.logif = 0; } 3213 | log QUICK { $$ = $1; $$.quick = 1; } 3214 | QUICK log { $$ = $2; $$.quick = 1; } 3215 ; 3216 3217 log : LOG { $$.log = PF_LOG; $$.logif = 0; } 3218 | LOG '(' logopts ')' { 3219 $$.log = PF_LOG | $3.log; 3220 $$.logif = $3.logif; 3221 } 3222 ; 3223 3224 logopts : logopt { $$ = $1; } 3225 | logopts comma logopt { 3226 $$.log = $1.log | $3.log; 3227 $$.logif = $3.logif; 3228 if ($$.logif == 0) 3229 $$.logif = $1.logif; 3230 } 3231 ; 3232 3233 logopt : ALL { $$.log = PF_LOG_ALL; $$.logif = 0; } 3234 | MATCHES { $$.log = PF_LOG_MATCHES; $$.logif = 0; } 3235 | USER { $$.log = PF_LOG_USER; $$.logif = 0; } 3236 | TO string { 3237 const char *errstr; 3238 u_int i; 3239 3240 $$.log = 0; 3241 if (strncmp($2, "pflog", 5)) { 3242 yyerror("%s: should be a pflog interface", $2); 3243 free($2); 3244 YYERROR; 3245 } 3246 i = strtonum($2 + 5, 0, 255, &errstr); 3247 if (errstr) { 3248 yyerror("%s: %s", $2, errstr); 3249 free($2); 3250 YYERROR; 3251 } 3252 free($2); 3253 $$.logif = i; 3254 } 3255 ; 3256 3257 interface : /* empty */ { $$ = NULL; } 3258 | ON if_item_not { $$ = $2; } 3259 | ON '{' optnl if_list '}' { $$ = $4; } 3260 ; 3261 3262 if_list : if_item_not optnl { $$ = $1; } 3263 | if_list comma if_item_not optnl { 3264 $1->tail->next = $3; 3265 $1->tail = $3; 3266 $$ = $1; 3267 } 3268 ; 3269 3270 if_item_not : not if_item { $$ = $2; $$->not = $1; } 3271 ; 3272 3273 if_item : STRING { 3274 struct node_host *n; 3275 3276 $$ = calloc(1, sizeof(struct node_if)); 3277 if ($$ == NULL) 3278 err(1, "if_item: calloc"); 3279 if (strlcpy($$->ifname, $1, sizeof($$->ifname)) >= 3280 sizeof($$->ifname)) { 3281 free($1); 3282 free($$); 3283 yyerror("interface name too long"); 3284 YYERROR; 3285 } 3286 3287 if ((n = ifa_exists($1)) != NULL) 3288 $$->ifa_flags = n->ifa_flags; 3289 3290 free($1); 3291 $$->not = 0; 3292 $$->next = NULL; 3293 $$->tail = $$; 3294 } 3295 | ANY { 3296 $$ = calloc(1, sizeof(struct node_if)); 3297 if ($$ == NULL) 3298 err(1, "if_item: calloc"); 3299 strlcpy($$->ifname, "any", sizeof($$->ifname)); 3300 $$->not = 0; 3301 $$->next = NULL; 3302 $$->tail = $$; 3303 } 3304 ; 3305 3306 af : /* empty */ { $$ = 0; } 3307 | INET { $$ = AF_INET; } 3308 | INET6 { $$ = AF_INET6; } 3309 ; 3310 3311 etherproto : /* empty */ { $$ = NULL; } 3312 | PROTO etherproto_item { $$ = $2; } 3313 | PROTO '{' optnl etherproto_list '}' { $$ = $4; } 3314 ; 3315 3316 etherproto_list : etherproto_item optnl { $$ = $1; } 3317 | etherproto_list comma etherproto_item optnl { 3318 $1->tail->next = $3; 3319 $1->tail = $3; 3320 $$ = $1; 3321 } 3322 ; 3323 3324 etherproto_item : etherprotoval { 3325 u_int16_t pr; 3326 3327 pr = (u_int16_t)$1; 3328 if (pr == 0) { 3329 yyerror("proto 0 cannot be used"); 3330 YYERROR; 3331 } 3332 $$ = calloc(1, sizeof(struct node_proto)); 3333 if ($$ == NULL) 3334 err(1, "proto_item: calloc"); 3335 $$->proto = pr; 3336 $$->next = NULL; 3337 $$->tail = $$; 3338 } 3339 ; 3340 3341 etherprotoval : NUMBER { 3342 if ($1 < 0 || $1 > 65565) { 3343 yyerror("protocol outside range"); 3344 YYERROR; 3345 } 3346 } 3347 | STRING 3348 { 3349 if (!strncmp($1, "0x", 2)) { 3350 if (sscanf($1, "0x%4x", &$$) != 1) { 3351 free($1); 3352 yyerror("invalid EtherType hex"); 3353 YYERROR; 3354 } 3355 } else { 3356 yyerror("Symbolic EtherType not yet supported"); 3357 } 3358 } 3359 ; 3360 3361 proto : /* empty */ { $$ = NULL; } 3362 | PROTO proto_item { $$ = $2; } 3363 | PROTO '{' optnl proto_list '}' { $$ = $4; } 3364 ; 3365 3366 proto_list : proto_item optnl { $$ = $1; } 3367 | proto_list comma proto_item optnl { 3368 $1->tail->next = $3; 3369 $1->tail = $3; 3370 $$ = $1; 3371 } 3372 ; 3373 3374 proto_item : protoval { 3375 u_int8_t pr; 3376 3377 pr = (u_int8_t)$1; 3378 if (pr == 0) { 3379 yyerror("proto 0 cannot be used"); 3380 YYERROR; 3381 } 3382 $$ = calloc(1, sizeof(struct node_proto)); 3383 if ($$ == NULL) 3384 err(1, "proto_item: calloc"); 3385 $$->proto = pr; 3386 $$->next = NULL; 3387 $$->tail = $$; 3388 } 3389 ; 3390 3391 protoval : STRING { 3392 struct protoent *p; 3393 3394 p = getprotobyname($1); 3395 if (p == NULL) { 3396 yyerror("unknown protocol %s", $1); 3397 free($1); 3398 YYERROR; 3399 } 3400 $$ = p->p_proto; 3401 free($1); 3402 } 3403 | NUMBER { 3404 if ($1 < 0 || $1 > 255) { 3405 yyerror("protocol outside range"); 3406 YYERROR; 3407 } 3408 } 3409 ; 3410 3411 l3fromto : /* empty */ { 3412 bzero(&$$, sizeof($$)); 3413 } 3414 | L3 fromto { 3415 if ($2.src.host != NULL && 3416 $2.src.host->addr.type != PF_ADDR_ADDRMASK && 3417 $2.src.host->addr.type != PF_ADDR_TABLE) { 3418 yyerror("from must be an address or table"); 3419 YYERROR; 3420 } 3421 if ($2.dst.host != NULL && 3422 $2.dst.host->addr.type != PF_ADDR_ADDRMASK && 3423 $2.dst.host->addr.type != PF_ADDR_TABLE) { 3424 yyerror("to must be an address or table"); 3425 YYERROR; 3426 } 3427 $$ = $2; 3428 } 3429 ; 3430 etherfromto : ALL { 3431 $$.src = NULL; 3432 $$.dst = NULL; 3433 } 3434 | etherfrom etherto { 3435 $$.src = $1.mac; 3436 $$.dst = $2.mac; 3437 } 3438 ; 3439 3440 etherfrom : /* emtpy */ { 3441 bzero(&$$, sizeof($$)); 3442 } 3443 | FROM macspec { 3444 $$.mac = $2; 3445 } 3446 ; 3447 3448 etherto : /* empty */ { 3449 bzero(&$$, sizeof($$)); 3450 } 3451 | TO macspec { 3452 $$.mac = $2; 3453 } 3454 ; 3455 3456 mac : string '/' NUMBER { 3457 $$ = node_mac_from_string_masklen($1, $3); 3458 free($1); 3459 if ($$ == NULL) 3460 YYERROR; 3461 } 3462 | string { 3463 if (strchr($1, '&')) { 3464 /* mac&mask */ 3465 char *mac = strtok($1, "&"); 3466 char *mask = strtok(NULL, "&"); 3467 $$ = node_mac_from_string_mask(mac, mask); 3468 } else { 3469 $$ = node_mac_from_string($1); 3470 } 3471 free($1); 3472 if ($$ == NULL) 3473 YYERROR; 3474 3475 } 3476 xmac : not mac { 3477 struct node_mac *n; 3478 3479 for (n = $2; n != NULL; n = n->next) 3480 n->neg = $1; 3481 $$ = $2; 3482 } 3483 ; 3484 macspec : xmac { 3485 $$ = $1; 3486 } 3487 | '{' optnl mac_list '}' 3488 { 3489 $$ = $3; 3490 } 3491 ; 3492 mac_list : xmac optnl { 3493 $$ = $1; 3494 } 3495 | mac_list comma xmac { 3496 if ($3 == NULL) 3497 $$ = $1; 3498 else if ($1 == NULL) 3499 $$ = $3; 3500 else { 3501 $1->tail->next = $3; 3502 $1->tail = $3->tail; 3503 $$ = $1; 3504 } 3505 } 3506 3507 fromto : ALL { 3508 $$.src.host = NULL; 3509 $$.src.port = NULL; 3510 $$.dst.host = NULL; 3511 $$.dst.port = NULL; 3512 $$.src_os = NULL; 3513 } 3514 | from os to { 3515 $$.src = $1; 3516 $$.src_os = $2; 3517 $$.dst = $3; 3518 } 3519 ; 3520 3521 os : /* empty */ { $$ = NULL; } 3522 | OS xos { $$ = $2; } 3523 | OS '{' optnl os_list '}' { $$ = $4; } 3524 ; 3525 3526 xos : STRING { 3527 $$ = calloc(1, sizeof(struct node_os)); 3528 if ($$ == NULL) 3529 err(1, "os: calloc"); 3530 $$->os = $1; 3531 $$->tail = $$; 3532 } 3533 ; 3534 3535 os_list : xos optnl { $$ = $1; } 3536 | os_list comma xos optnl { 3537 $1->tail->next = $3; 3538 $1->tail = $3; 3539 $$ = $1; 3540 } 3541 ; 3542 3543 from : /* empty */ { 3544 $$.host = NULL; 3545 $$.port = NULL; 3546 } 3547 | FROM ipportspec { 3548 $$ = $2; 3549 } 3550 ; 3551 3552 to : /* empty */ { 3553 $$.host = NULL; 3554 $$.port = NULL; 3555 } 3556 | TO ipportspec { 3557 if (disallow_urpf_failed($2.host, "\"urpf-failed\" is " 3558 "not permitted in a destination address")) 3559 YYERROR; 3560 $$ = $2; 3561 } 3562 ; 3563 3564 ipportspec : ipspec { 3565 $$.host = $1; 3566 $$.port = NULL; 3567 } 3568 | ipspec PORT portspec { 3569 $$.host = $1; 3570 $$.port = $3; 3571 } 3572 | PORT portspec { 3573 $$.host = NULL; 3574 $$.port = $2; 3575 } 3576 ; 3577 3578 optnl : '\n' optnl 3579 | 3580 ; 3581 3582 ipspec : ANY { $$ = NULL; } 3583 | xhost { $$ = $1; } 3584 | '{' optnl host_list '}' { $$ = $3; } 3585 ; 3586 3587 toipspec : TO ipspec { $$ = $2; } 3588 | /* empty */ { $$ = NULL; } 3589 ; 3590 3591 host_list : ipspec optnl { $$ = $1; } 3592 | host_list comma ipspec optnl { 3593 if ($1 == NULL) { 3594 freehostlist($3); 3595 $$ = $1; 3596 } else if ($3 == NULL) { 3597 freehostlist($1); 3598 $$ = $3; 3599 } else { 3600 $1->tail->next = $3; 3601 $1->tail = $3->tail; 3602 $$ = $1; 3603 } 3604 } 3605 ; 3606 3607 xhost : not host { 3608 struct node_host *n; 3609 3610 for (n = $2; n != NULL; n = n->next) 3611 n->not = $1; 3612 $$ = $2; 3613 } 3614 | not NOROUTE { 3615 $$ = calloc(1, sizeof(struct node_host)); 3616 if ($$ == NULL) 3617 err(1, "xhost: calloc"); 3618 $$->addr.type = PF_ADDR_NOROUTE; 3619 $$->next = NULL; 3620 $$->not = $1; 3621 $$->tail = $$; 3622 } 3623 | not URPFFAILED { 3624 $$ = calloc(1, sizeof(struct node_host)); 3625 if ($$ == NULL) 3626 err(1, "xhost: calloc"); 3627 $$->addr.type = PF_ADDR_URPFFAILED; 3628 $$->next = NULL; 3629 $$->not = $1; 3630 $$->tail = $$; 3631 } 3632 ; 3633 3634 host : STRING { 3635 if (($$ = host($1, pf->opts)) == NULL) { 3636 /* error. "any" is handled elsewhere */ 3637 free($1); 3638 yyerror("could not parse host specification"); 3639 YYERROR; 3640 } 3641 free($1); 3642 3643 } 3644 | STRING '-' STRING { 3645 struct node_host *b, *e; 3646 3647 if ((b = host($1, pf->opts)) == NULL || 3648 (e = host($3, pf->opts)) == NULL) { 3649 free($1); 3650 free($3); 3651 yyerror("could not parse host specification"); 3652 YYERROR; 3653 } 3654 if (b->af != e->af || 3655 b->addr.type != PF_ADDR_ADDRMASK || 3656 e->addr.type != PF_ADDR_ADDRMASK || 3657 unmask(&b->addr.v.a.mask) != 3658 (b->af == AF_INET ? 32 : 128) || 3659 unmask(&e->addr.v.a.mask) != 3660 (e->af == AF_INET ? 32 : 128) || 3661 b->next != NULL || b->not || 3662 e->next != NULL || e->not) { 3663 free(b); 3664 free(e); 3665 free($1); 3666 free($3); 3667 yyerror("invalid address range"); 3668 YYERROR; 3669 } 3670 memcpy(&b->addr.v.a.mask, &e->addr.v.a.addr, 3671 sizeof(b->addr.v.a.mask)); 3672 b->addr.type = PF_ADDR_RANGE; 3673 $$ = b; 3674 free(e); 3675 free($1); 3676 free($3); 3677 } 3678 | STRING '/' NUMBER { 3679 char *buf; 3680 3681 if (asprintf(&buf, "%s/%lld", $1, (long long)$3) == -1) 3682 err(1, "host: asprintf"); 3683 free($1); 3684 if (($$ = host(buf, pf->opts)) == NULL) { 3685 /* error. "any" is handled elsewhere */ 3686 free(buf); 3687 yyerror("could not parse host specification"); 3688 YYERROR; 3689 } 3690 free(buf); 3691 } 3692 | NUMBER '/' NUMBER { 3693 char *buf; 3694 3695 /* ie. for 10/8 parsing */ 3696 #ifdef __FreeBSD__ 3697 if (asprintf(&buf, "%lld/%lld", (long long)$1, (long long)$3) == -1) 3698 #else 3699 if (asprintf(&buf, "%lld/%lld", $1, $3) == -1) 3700 #endif 3701 err(1, "host: asprintf"); 3702 if (($$ = host(buf, pf->opts)) == NULL) { 3703 /* error. "any" is handled elsewhere */ 3704 free(buf); 3705 yyerror("could not parse host specification"); 3706 YYERROR; 3707 } 3708 free(buf); 3709 } 3710 | dynaddr 3711 | dynaddr '/' NUMBER { 3712 struct node_host *n; 3713 3714 if ($3 < 0 || $3 > 128) { 3715 yyerror("bit number too big"); 3716 YYERROR; 3717 } 3718 $$ = $1; 3719 for (n = $1; n != NULL; n = n->next) 3720 set_ipmask(n, $3); 3721 } 3722 | '<' STRING '>' { 3723 if (strlen($2) >= PF_TABLE_NAME_SIZE) { 3724 yyerror("table name '%s' too long", $2); 3725 free($2); 3726 YYERROR; 3727 } 3728 $$ = calloc(1, sizeof(struct node_host)); 3729 if ($$ == NULL) 3730 err(1, "host: calloc"); 3731 $$->addr.type = PF_ADDR_TABLE; 3732 if (strlcpy($$->addr.v.tblname, $2, 3733 sizeof($$->addr.v.tblname)) >= 3734 sizeof($$->addr.v.tblname)) 3735 errx(1, "host: strlcpy"); 3736 free($2); 3737 $$->next = NULL; 3738 $$->tail = $$; 3739 } 3740 ; 3741 3742 number : NUMBER 3743 | STRING { 3744 u_long ulval; 3745 3746 if (atoul($1, &ulval) == -1) { 3747 yyerror("%s is not a number", $1); 3748 free($1); 3749 YYERROR; 3750 } else 3751 $$ = ulval; 3752 free($1); 3753 } 3754 ; 3755 3756 dynaddr : '(' STRING ')' { 3757 int flags = 0; 3758 char *p, *op; 3759 3760 op = $2; 3761 if (!isalpha(op[0])) { 3762 yyerror("invalid interface name '%s'", op); 3763 free(op); 3764 YYERROR; 3765 } 3766 while ((p = strrchr($2, ':')) != NULL) { 3767 if (!strcmp(p+1, "network")) 3768 flags |= PFI_AFLAG_NETWORK; 3769 else if (!strcmp(p+1, "broadcast")) 3770 flags |= PFI_AFLAG_BROADCAST; 3771 else if (!strcmp(p+1, "peer")) 3772 flags |= PFI_AFLAG_PEER; 3773 else if (!strcmp(p+1, "0")) 3774 flags |= PFI_AFLAG_NOALIAS; 3775 else { 3776 yyerror("interface %s has bad modifier", 3777 $2); 3778 free(op); 3779 YYERROR; 3780 } 3781 *p = '\0'; 3782 } 3783 if (flags & (flags - 1) & PFI_AFLAG_MODEMASK) { 3784 free(op); 3785 yyerror("illegal combination of " 3786 "interface modifiers"); 3787 YYERROR; 3788 } 3789 $$ = calloc(1, sizeof(struct node_host)); 3790 if ($$ == NULL) 3791 err(1, "address: calloc"); 3792 $$->af = 0; 3793 set_ipmask($$, 128); 3794 $$->addr.type = PF_ADDR_DYNIFTL; 3795 $$->addr.iflags = flags; 3796 if (strlcpy($$->addr.v.ifname, $2, 3797 sizeof($$->addr.v.ifname)) >= 3798 sizeof($$->addr.v.ifname)) { 3799 free(op); 3800 free($$); 3801 yyerror("interface name too long"); 3802 YYERROR; 3803 } 3804 free(op); 3805 $$->next = NULL; 3806 $$->tail = $$; 3807 } 3808 ; 3809 3810 portspec : port_item { $$ = $1; } 3811 | '{' optnl port_list '}' { $$ = $3; } 3812 ; 3813 3814 port_list : port_item optnl { $$ = $1; } 3815 | port_list comma port_item optnl { 3816 $1->tail->next = $3; 3817 $1->tail = $3; 3818 $$ = $1; 3819 } 3820 ; 3821 3822 port_item : portrange { 3823 $$ = calloc(1, sizeof(struct node_port)); 3824 if ($$ == NULL) 3825 err(1, "port_item: calloc"); 3826 $$->port[0] = $1.a; 3827 $$->port[1] = $1.b; 3828 if ($1.t) { 3829 $$->op = PF_OP_RRG; 3830 if (validate_range($$->op, $$->port[0], 3831 $$->port[1])) { 3832 yyerror("invalid port range"); 3833 YYERROR; 3834 } 3835 } else 3836 $$->op = PF_OP_EQ; 3837 $$->next = NULL; 3838 $$->tail = $$; 3839 } 3840 | unaryop portrange { 3841 if ($2.t) { 3842 yyerror("':' cannot be used with an other " 3843 "port operator"); 3844 YYERROR; 3845 } 3846 $$ = calloc(1, sizeof(struct node_port)); 3847 if ($$ == NULL) 3848 err(1, "port_item: calloc"); 3849 $$->port[0] = $2.a; 3850 $$->port[1] = $2.b; 3851 $$->op = $1; 3852 if (validate_range($$->op, $$->port[0], $$->port[1])) { 3853 yyerror("invalid port range"); 3854 YYERROR; 3855 } 3856 $$->next = NULL; 3857 $$->tail = $$; 3858 } 3859 | portrange PORTBINARY portrange { 3860 if ($1.t || $3.t) { 3861 yyerror("':' cannot be used with an other " 3862 "port operator"); 3863 YYERROR; 3864 } 3865 $$ = calloc(1, sizeof(struct node_port)); 3866 if ($$ == NULL) 3867 err(1, "port_item: calloc"); 3868 $$->port[0] = $1.a; 3869 $$->port[1] = $3.a; 3870 $$->op = $2; 3871 if (validate_range($$->op, $$->port[0], $$->port[1])) { 3872 yyerror("invalid port range"); 3873 YYERROR; 3874 } 3875 $$->next = NULL; 3876 $$->tail = $$; 3877 } 3878 ; 3879 3880 portplain : numberstring { 3881 if (parseport($1, &$$, 0) == -1) { 3882 free($1); 3883 YYERROR; 3884 } 3885 free($1); 3886 } 3887 ; 3888 3889 portrange : numberstring { 3890 if (parseport($1, &$$, PPORT_RANGE) == -1) { 3891 free($1); 3892 YYERROR; 3893 } 3894 free($1); 3895 } 3896 ; 3897 3898 uids : uid_item { $$ = $1; } 3899 | '{' optnl uid_list '}' { $$ = $3; } 3900 ; 3901 3902 uid_list : uid_item optnl { $$ = $1; } 3903 | uid_list comma uid_item optnl { 3904 $1->tail->next = $3; 3905 $1->tail = $3; 3906 $$ = $1; 3907 } 3908 ; 3909 3910 uid_item : uid { 3911 $$ = calloc(1, sizeof(struct node_uid)); 3912 if ($$ == NULL) 3913 err(1, "uid_item: calloc"); 3914 $$->uid[0] = $1; 3915 $$->uid[1] = $1; 3916 $$->op = PF_OP_EQ; 3917 $$->next = NULL; 3918 $$->tail = $$; 3919 } 3920 | unaryop uid { 3921 if ($2 == -1 && $1 != PF_OP_EQ && $1 != PF_OP_NE) { 3922 yyerror("user unknown requires operator = or " 3923 "!="); 3924 YYERROR; 3925 } 3926 $$ = calloc(1, sizeof(struct node_uid)); 3927 if ($$ == NULL) 3928 err(1, "uid_item: calloc"); 3929 $$->uid[0] = $2; 3930 $$->uid[1] = $2; 3931 $$->op = $1; 3932 $$->next = NULL; 3933 $$->tail = $$; 3934 } 3935 | uid PORTBINARY uid { 3936 if ($1 == -1 || $3 == -1) { 3937 yyerror("user unknown requires operator = or " 3938 "!="); 3939 YYERROR; 3940 } 3941 $$ = calloc(1, sizeof(struct node_uid)); 3942 if ($$ == NULL) 3943 err(1, "uid_item: calloc"); 3944 $$->uid[0] = $1; 3945 $$->uid[1] = $3; 3946 $$->op = $2; 3947 $$->next = NULL; 3948 $$->tail = $$; 3949 } 3950 ; 3951 3952 uid : STRING { 3953 if (!strcmp($1, "unknown")) 3954 $$ = -1; 3955 else { 3956 uid_t uid; 3957 3958 if (uid_from_user($1, &uid) == -1) { 3959 yyerror("unknown user %s", $1); 3960 free($1); 3961 YYERROR; 3962 } 3963 $$ = uid; 3964 } 3965 free($1); 3966 } 3967 | NUMBER { 3968 if ($1 < 0 || $1 >= UID_MAX) { 3969 yyerror("illegal uid value %lu", $1); 3970 YYERROR; 3971 } 3972 $$ = $1; 3973 } 3974 ; 3975 3976 gids : gid_item { $$ = $1; } 3977 | '{' optnl gid_list '}' { $$ = $3; } 3978 ; 3979 3980 gid_list : gid_item optnl { $$ = $1; } 3981 | gid_list comma gid_item optnl { 3982 $1->tail->next = $3; 3983 $1->tail = $3; 3984 $$ = $1; 3985 } 3986 ; 3987 3988 gid_item : gid { 3989 $$ = calloc(1, sizeof(struct node_gid)); 3990 if ($$ == NULL) 3991 err(1, "gid_item: calloc"); 3992 $$->gid[0] = $1; 3993 $$->gid[1] = $1; 3994 $$->op = PF_OP_EQ; 3995 $$->next = NULL; 3996 $$->tail = $$; 3997 } 3998 | unaryop gid { 3999 if ($2 == -1 && $1 != PF_OP_EQ && $1 != PF_OP_NE) { 4000 yyerror("group unknown requires operator = or " 4001 "!="); 4002 YYERROR; 4003 } 4004 $$ = calloc(1, sizeof(struct node_gid)); 4005 if ($$ == NULL) 4006 err(1, "gid_item: calloc"); 4007 $$->gid[0] = $2; 4008 $$->gid[1] = $2; 4009 $$->op = $1; 4010 $$->next = NULL; 4011 $$->tail = $$; 4012 } 4013 | gid PORTBINARY gid { 4014 if ($1 == -1 || $3 == -1) { 4015 yyerror("group unknown requires operator = or " 4016 "!="); 4017 YYERROR; 4018 } 4019 $$ = calloc(1, sizeof(struct node_gid)); 4020 if ($$ == NULL) 4021 err(1, "gid_item: calloc"); 4022 $$->gid[0] = $1; 4023 $$->gid[1] = $3; 4024 $$->op = $2; 4025 $$->next = NULL; 4026 $$->tail = $$; 4027 } 4028 ; 4029 4030 gid : STRING { 4031 if (!strcmp($1, "unknown")) 4032 $$ = -1; 4033 else { 4034 gid_t gid; 4035 4036 if (gid_from_group($1, &gid) == -1) { 4037 yyerror("unknown group %s", $1); 4038 free($1); 4039 YYERROR; 4040 } 4041 $$ = gid; 4042 } 4043 free($1); 4044 } 4045 | NUMBER { 4046 if ($1 < 0 || $1 >= GID_MAX) { 4047 yyerror("illegal gid value %lu", $1); 4048 YYERROR; 4049 } 4050 $$ = $1; 4051 } 4052 ; 4053 4054 flag : STRING { 4055 int f; 4056 4057 if ((f = parse_flags($1)) < 0) { 4058 yyerror("bad flags %s", $1); 4059 free($1); 4060 YYERROR; 4061 } 4062 free($1); 4063 $$.b1 = f; 4064 } 4065 ; 4066 4067 flags : FLAGS flag '/' flag { $$.b1 = $2.b1; $$.b2 = $4.b1; } 4068 | FLAGS '/' flag { $$.b1 = 0; $$.b2 = $3.b1; } 4069 | FLAGS ANY { $$.b1 = 0; $$.b2 = 0; } 4070 ; 4071 4072 icmpspec : ICMPTYPE icmp_item { $$ = $2; } 4073 | ICMPTYPE '{' optnl icmp_list '}' { $$ = $4; } 4074 | ICMP6TYPE icmp6_item { $$ = $2; } 4075 | ICMP6TYPE '{' optnl icmp6_list '}' { $$ = $4; } 4076 ; 4077 4078 icmp_list : icmp_item optnl { $$ = $1; } 4079 | icmp_list comma icmp_item optnl { 4080 $1->tail->next = $3; 4081 $1->tail = $3; 4082 $$ = $1; 4083 } 4084 ; 4085 4086 icmp6_list : icmp6_item optnl { $$ = $1; } 4087 | icmp6_list comma icmp6_item optnl { 4088 $1->tail->next = $3; 4089 $1->tail = $3; 4090 $$ = $1; 4091 } 4092 ; 4093 4094 icmp_item : icmptype { 4095 $$ = calloc(1, sizeof(struct node_icmp)); 4096 if ($$ == NULL) 4097 err(1, "icmp_item: calloc"); 4098 $$->type = $1; 4099 $$->code = 0; 4100 $$->proto = IPPROTO_ICMP; 4101 $$->next = NULL; 4102 $$->tail = $$; 4103 } 4104 | icmptype CODE STRING { 4105 const struct icmpcodeent *p; 4106 4107 if ((p = geticmpcodebyname($1-1, $3, AF_INET)) == NULL) { 4108 yyerror("unknown icmp-code %s", $3); 4109 free($3); 4110 YYERROR; 4111 } 4112 4113 free($3); 4114 $$ = calloc(1, sizeof(struct node_icmp)); 4115 if ($$ == NULL) 4116 err(1, "icmp_item: calloc"); 4117 $$->type = $1; 4118 $$->code = p->code + 1; 4119 $$->proto = IPPROTO_ICMP; 4120 $$->next = NULL; 4121 $$->tail = $$; 4122 } 4123 | icmptype CODE NUMBER { 4124 if ($3 < 0 || $3 > 255) { 4125 yyerror("illegal icmp-code %lu", $3); 4126 YYERROR; 4127 } 4128 $$ = calloc(1, sizeof(struct node_icmp)); 4129 if ($$ == NULL) 4130 err(1, "icmp_item: calloc"); 4131 $$->type = $1; 4132 $$->code = $3 + 1; 4133 $$->proto = IPPROTO_ICMP; 4134 $$->next = NULL; 4135 $$->tail = $$; 4136 } 4137 ; 4138 4139 icmp6_item : icmp6type { 4140 $$ = calloc(1, sizeof(struct node_icmp)); 4141 if ($$ == NULL) 4142 err(1, "icmp_item: calloc"); 4143 $$->type = $1; 4144 $$->code = 0; 4145 $$->proto = IPPROTO_ICMPV6; 4146 $$->next = NULL; 4147 $$->tail = $$; 4148 } 4149 | icmp6type CODE STRING { 4150 const struct icmpcodeent *p; 4151 4152 if ((p = geticmpcodebyname($1-1, $3, AF_INET6)) == NULL) { 4153 yyerror("unknown icmp6-code %s", $3); 4154 free($3); 4155 YYERROR; 4156 } 4157 free($3); 4158 4159 $$ = calloc(1, sizeof(struct node_icmp)); 4160 if ($$ == NULL) 4161 err(1, "icmp_item: calloc"); 4162 $$->type = $1; 4163 $$->code = p->code + 1; 4164 $$->proto = IPPROTO_ICMPV6; 4165 $$->next = NULL; 4166 $$->tail = $$; 4167 } 4168 | icmp6type CODE NUMBER { 4169 if ($3 < 0 || $3 > 255) { 4170 yyerror("illegal icmp-code %lu", $3); 4171 YYERROR; 4172 } 4173 $$ = calloc(1, sizeof(struct node_icmp)); 4174 if ($$ == NULL) 4175 err(1, "icmp_item: calloc"); 4176 $$->type = $1; 4177 $$->code = $3 + 1; 4178 $$->proto = IPPROTO_ICMPV6; 4179 $$->next = NULL; 4180 $$->tail = $$; 4181 } 4182 ; 4183 4184 icmptype : STRING { 4185 const struct icmptypeent *p; 4186 4187 if ((p = geticmptypebyname($1, AF_INET)) == NULL) { 4188 yyerror("unknown icmp-type %s", $1); 4189 free($1); 4190 YYERROR; 4191 } 4192 $$ = p->type + 1; 4193 free($1); 4194 } 4195 | NUMBER { 4196 if ($1 < 0 || $1 > 255) { 4197 yyerror("illegal icmp-type %lu", $1); 4198 YYERROR; 4199 } 4200 $$ = $1 + 1; 4201 } 4202 ; 4203 4204 icmp6type : STRING { 4205 const struct icmptypeent *p; 4206 4207 if ((p = geticmptypebyname($1, AF_INET6)) == 4208 NULL) { 4209 yyerror("unknown icmp6-type %s", $1); 4210 free($1); 4211 YYERROR; 4212 } 4213 $$ = p->type + 1; 4214 free($1); 4215 } 4216 | NUMBER { 4217 if ($1 < 0 || $1 > 255) { 4218 yyerror("illegal icmp6-type %lu", $1); 4219 YYERROR; 4220 } 4221 $$ = $1 + 1; 4222 } 4223 ; 4224 4225 tos : STRING { 4226 int val; 4227 char *end; 4228 4229 if (map_tos($1, &val)) 4230 $$ = val; 4231 else if ($1[0] == '0' && $1[1] == 'x') { 4232 errno = 0; 4233 $$ = strtoul($1, &end, 16); 4234 if (errno || *end != '\0') 4235 $$ = 256; 4236 } else 4237 $$ = 256; /* flag bad argument */ 4238 if ($$ < 0 || $$ > 255) { 4239 yyerror("illegal tos value %s", $1); 4240 free($1); 4241 YYERROR; 4242 } 4243 free($1); 4244 } 4245 | NUMBER { 4246 $$ = $1; 4247 if ($$ < 0 || $$ > 255) { 4248 yyerror("illegal tos value %lu", $1); 4249 YYERROR; 4250 } 4251 } 4252 ; 4253 4254 sourcetrack : SOURCETRACK { $$ = PF_SRCTRACK; } 4255 | SOURCETRACK GLOBAL { $$ = PF_SRCTRACK_GLOBAL; } 4256 | SOURCETRACK RULE { $$ = PF_SRCTRACK_RULE; } 4257 ; 4258 4259 statelock : IFBOUND { 4260 $$ = PFRULE_IFBOUND; 4261 } 4262 | FLOATING { 4263 $$ = 0; 4264 } 4265 ; 4266 4267 keep : NO STATE { 4268 $$.action = 0; 4269 $$.options = NULL; 4270 } 4271 | KEEP STATE state_opt_spec { 4272 $$.action = PF_STATE_NORMAL; 4273 $$.options = $3; 4274 } 4275 | MODULATE STATE state_opt_spec { 4276 $$.action = PF_STATE_MODULATE; 4277 $$.options = $3; 4278 } 4279 | SYNPROXY STATE state_opt_spec { 4280 $$.action = PF_STATE_SYNPROXY; 4281 $$.options = $3; 4282 } 4283 ; 4284 4285 flush : /* empty */ { $$ = 0; } 4286 | FLUSH { $$ = PF_FLUSH; } 4287 | FLUSH GLOBAL { 4288 $$ = PF_FLUSH | PF_FLUSH_GLOBAL; 4289 } 4290 ; 4291 4292 state_opt_spec : '(' state_opt_list ')' { $$ = $2; } 4293 | /* empty */ { $$ = NULL; } 4294 ; 4295 4296 state_opt_list : state_opt_item { $$ = $1; } 4297 | state_opt_list comma state_opt_item { 4298 $1->tail->next = $3; 4299 $1->tail = $3; 4300 $$ = $1; 4301 } 4302 ; 4303 4304 state_opt_item : MAXIMUM NUMBER { 4305 if ($2 < 0 || $2 > UINT_MAX) { 4306 yyerror("only positive values permitted"); 4307 YYERROR; 4308 } 4309 $$ = calloc(1, sizeof(struct node_state_opt)); 4310 if ($$ == NULL) 4311 err(1, "state_opt_item: calloc"); 4312 $$->type = PF_STATE_OPT_MAX; 4313 $$->data.max_states = $2; 4314 $$->next = NULL; 4315 $$->tail = $$; 4316 } 4317 | NOSYNC { 4318 $$ = calloc(1, sizeof(struct node_state_opt)); 4319 if ($$ == NULL) 4320 err(1, "state_opt_item: calloc"); 4321 $$->type = PF_STATE_OPT_NOSYNC; 4322 $$->next = NULL; 4323 $$->tail = $$; 4324 } 4325 | MAXSRCSTATES NUMBER { 4326 if ($2 < 0 || $2 > UINT_MAX) { 4327 yyerror("only positive values permitted"); 4328 YYERROR; 4329 } 4330 $$ = calloc(1, sizeof(struct node_state_opt)); 4331 if ($$ == NULL) 4332 err(1, "state_opt_item: calloc"); 4333 $$->type = PF_STATE_OPT_MAX_SRC_STATES; 4334 $$->data.max_src_states = $2; 4335 $$->next = NULL; 4336 $$->tail = $$; 4337 } 4338 | MAXSRCCONN NUMBER { 4339 if ($2 < 0 || $2 > UINT_MAX) { 4340 yyerror("only positive values permitted"); 4341 YYERROR; 4342 } 4343 $$ = calloc(1, sizeof(struct node_state_opt)); 4344 if ($$ == NULL) 4345 err(1, "state_opt_item: calloc"); 4346 $$->type = PF_STATE_OPT_MAX_SRC_CONN; 4347 $$->data.max_src_conn = $2; 4348 $$->next = NULL; 4349 $$->tail = $$; 4350 } 4351 | MAXSRCCONNRATE NUMBER '/' NUMBER { 4352 if ($2 < 0 || $2 > UINT_MAX || 4353 $4 < 0 || $4 > UINT_MAX) { 4354 yyerror("only positive values permitted"); 4355 YYERROR; 4356 } 4357 $$ = calloc(1, sizeof(struct node_state_opt)); 4358 if ($$ == NULL) 4359 err(1, "state_opt_item: calloc"); 4360 $$->type = PF_STATE_OPT_MAX_SRC_CONN_RATE; 4361 $$->data.max_src_conn_rate.limit = $2; 4362 $$->data.max_src_conn_rate.seconds = $4; 4363 $$->next = NULL; 4364 $$->tail = $$; 4365 } 4366 | OVERLOAD '<' STRING '>' flush { 4367 if (strlen($3) >= PF_TABLE_NAME_SIZE) { 4368 yyerror("table name '%s' too long", $3); 4369 free($3); 4370 YYERROR; 4371 } 4372 $$ = calloc(1, sizeof(struct node_state_opt)); 4373 if ($$ == NULL) 4374 err(1, "state_opt_item: calloc"); 4375 if (strlcpy($$->data.overload.tblname, $3, 4376 PF_TABLE_NAME_SIZE) >= PF_TABLE_NAME_SIZE) 4377 errx(1, "state_opt_item: strlcpy"); 4378 free($3); 4379 $$->type = PF_STATE_OPT_OVERLOAD; 4380 $$->data.overload.flush = $5; 4381 $$->next = NULL; 4382 $$->tail = $$; 4383 } 4384 | MAXSRCNODES NUMBER { 4385 if ($2 < 0 || $2 > UINT_MAX) { 4386 yyerror("only positive values permitted"); 4387 YYERROR; 4388 } 4389 $$ = calloc(1, sizeof(struct node_state_opt)); 4390 if ($$ == NULL) 4391 err(1, "state_opt_item: calloc"); 4392 $$->type = PF_STATE_OPT_MAX_SRC_NODES; 4393 $$->data.max_src_nodes = $2; 4394 $$->next = NULL; 4395 $$->tail = $$; 4396 } 4397 | sourcetrack { 4398 $$ = calloc(1, sizeof(struct node_state_opt)); 4399 if ($$ == NULL) 4400 err(1, "state_opt_item: calloc"); 4401 $$->type = PF_STATE_OPT_SRCTRACK; 4402 $$->data.src_track = $1; 4403 $$->next = NULL; 4404 $$->tail = $$; 4405 } 4406 | statelock { 4407 $$ = calloc(1, sizeof(struct node_state_opt)); 4408 if ($$ == NULL) 4409 err(1, "state_opt_item: calloc"); 4410 $$->type = PF_STATE_OPT_STATELOCK; 4411 $$->data.statelock = $1; 4412 $$->next = NULL; 4413 $$->tail = $$; 4414 } 4415 | SLOPPY { 4416 $$ = calloc(1, sizeof(struct node_state_opt)); 4417 if ($$ == NULL) 4418 err(1, "state_opt_item: calloc"); 4419 $$->type = PF_STATE_OPT_SLOPPY; 4420 $$->next = NULL; 4421 $$->tail = $$; 4422 } 4423 | PFLOW { 4424 $$ = calloc(1, sizeof(struct node_state_opt)); 4425 if ($$ == NULL) 4426 err(1, "state_opt_item: calloc"); 4427 $$->type = PF_STATE_OPT_PFLOW; 4428 $$->next = NULL; 4429 $$->tail = $$; 4430 } 4431 | ALLOW_RELATED { 4432 $$ = calloc(1, sizeof(struct node_state_opt)); 4433 if ($$ == NULL) 4434 err(1, "state_opt_item: calloc"); 4435 $$->type = PF_STATE_OPT_ALLOW_RELATED; 4436 $$->next = NULL; 4437 $$->tail = $$; 4438 } 4439 | STRING NUMBER { 4440 int i; 4441 4442 if ($2 < 0 || $2 > UINT_MAX) { 4443 yyerror("only positive values permitted"); 4444 YYERROR; 4445 } 4446 for (i = 0; pf_timeouts[i].name && 4447 strcmp(pf_timeouts[i].name, $1); ++i) 4448 ; /* nothing */ 4449 if (!pf_timeouts[i].name) { 4450 yyerror("illegal timeout name %s", $1); 4451 free($1); 4452 YYERROR; 4453 } 4454 if (strchr(pf_timeouts[i].name, '.') == NULL) { 4455 yyerror("illegal state timeout %s", $1); 4456 free($1); 4457 YYERROR; 4458 } 4459 free($1); 4460 $$ = calloc(1, sizeof(struct node_state_opt)); 4461 if ($$ == NULL) 4462 err(1, "state_opt_item: calloc"); 4463 $$->type = PF_STATE_OPT_TIMEOUT; 4464 $$->data.timeout.number = pf_timeouts[i].timeout; 4465 $$->data.timeout.seconds = $2; 4466 $$->next = NULL; 4467 $$->tail = $$; 4468 } 4469 ; 4470 4471 label : LABEL STRING { 4472 $$ = $2; 4473 } 4474 ; 4475 4476 etherqname : QUEUE STRING { 4477 $$.qname = $2; 4478 } 4479 | QUEUE '(' STRING ')' { 4480 $$.qname = $3; 4481 } 4482 ; 4483 4484 qname : QUEUE STRING { 4485 $$.qname = $2; 4486 $$.pqname = NULL; 4487 } 4488 | QUEUE '(' STRING ')' { 4489 $$.qname = $3; 4490 $$.pqname = NULL; 4491 } 4492 | QUEUE '(' STRING comma STRING ')' { 4493 $$.qname = $3; 4494 $$.pqname = $5; 4495 } 4496 ; 4497 4498 no : /* empty */ { $$ = 0; } 4499 | NO { $$ = 1; } 4500 ; 4501 4502 portstar : numberstring { 4503 if (parseport($1, &$$, PPORT_RANGE|PPORT_STAR) == -1) { 4504 free($1); 4505 YYERROR; 4506 } 4507 free($1); 4508 } 4509 ; 4510 4511 redir_host : host { $$ = $1; } 4512 | '{' optnl redir_host_list '}' { $$ = $3; } 4513 ; 4514 4515 redir_host_list : host optnl { $$ = $1; } 4516 | redir_host_list comma host optnl { 4517 $1->tail->next = $3; 4518 $1->tail = $3->tail; 4519 $$ = $1; 4520 } 4521 ; 4522 4523 /* Redirection without port */ 4524 no_port_redirspec: redir_host pool_opts { 4525 $$ = calloc(1, sizeof(struct redirspec)); 4526 if ($$ == NULL) 4527 err(1, "redirspec: calloc"); 4528 $$->host = $1; 4529 $$->pool_opts = $2; 4530 $$->rport.a = $$->rport.b = $$->rport.t = 0; 4531 } 4532 ; 4533 4534 /* Redirection with optional port */ 4535 port_redirspec : no_port_redirspec; 4536 | redir_host PORT portstar pool_opts { 4537 $$ = calloc(1, sizeof(struct redirspec)); 4538 if ($$ == NULL) 4539 err(1, "redirspec: calloc"); 4540 $$->host = $1; 4541 $$->rport = $3; 4542 $$->pool_opts = $4; 4543 } 4544 4545 /* Redirection with an arrow and an optional port: FreeBSD NAT rules */ 4546 nat_redirspec : /* empty */ { $$ = NULL; } 4547 | ARROW port_redirspec { 4548 $$ = $2; 4549 } 4550 ; 4551 4552 /* Redirection with interfaces and without ports: route-to rules */ 4553 route_redirspec : routespec pool_opts { 4554 $$ = calloc(1, sizeof(struct redirspec)); 4555 if ($$ == NULL) 4556 err(1, "redirspec: calloc"); 4557 $$->host = $1; 4558 $$->pool_opts = $2; 4559 } 4560 ; 4561 4562 hashkey : /* empty */ 4563 { 4564 $$ = calloc(1, sizeof(struct pf_poolhashkey)); 4565 if ($$ == NULL) 4566 err(1, "hashkey: calloc"); 4567 $$->key32[0] = arc4random(); 4568 $$->key32[1] = arc4random(); 4569 $$->key32[2] = arc4random(); 4570 $$->key32[3] = arc4random(); 4571 } 4572 | string 4573 { 4574 if (!strncmp($1, "0x", 2)) { 4575 if (strlen($1) != 34) { 4576 free($1); 4577 yyerror("hex key must be 128 bits " 4578 "(32 hex digits) long"); 4579 YYERROR; 4580 } 4581 $$ = calloc(1, sizeof(struct pf_poolhashkey)); 4582 if ($$ == NULL) 4583 err(1, "hashkey: calloc"); 4584 4585 if (sscanf($1, "0x%8x%8x%8x%8x", 4586 &$$->key32[0], &$$->key32[1], 4587 &$$->key32[2], &$$->key32[3]) != 4) { 4588 free($$); 4589 free($1); 4590 yyerror("invalid hex key"); 4591 YYERROR; 4592 } 4593 } else { 4594 MD5_CTX context; 4595 4596 $$ = calloc(1, sizeof(struct pf_poolhashkey)); 4597 if ($$ == NULL) 4598 err(1, "hashkey: calloc"); 4599 MD5Init(&context); 4600 MD5Update(&context, (unsigned char *)$1, 4601 strlen($1)); 4602 MD5Final((unsigned char *)$$, &context); 4603 HTONL($$->key32[0]); 4604 HTONL($$->key32[1]); 4605 HTONL($$->key32[2]); 4606 HTONL($$->key32[3]); 4607 } 4608 free($1); 4609 } 4610 ; 4611 4612 pool_opts : { bzero(&pool_opts, sizeof pool_opts); } 4613 pool_opts_l 4614 { $$ = pool_opts; } 4615 | /* empty */ { 4616 bzero(&pool_opts, sizeof pool_opts); 4617 $$ = pool_opts; 4618 } 4619 ; 4620 4621 pool_opts_l : pool_opts_l pool_opt 4622 | pool_opt 4623 ; 4624 4625 pool_opt : BITMASK { 4626 if (pool_opts.type) { 4627 yyerror("pool type cannot be redefined"); 4628 YYERROR; 4629 } 4630 pool_opts.type = PF_POOL_BITMASK; 4631 } 4632 | RANDOM { 4633 if (pool_opts.type) { 4634 yyerror("pool type cannot be redefined"); 4635 YYERROR; 4636 } 4637 pool_opts.type = PF_POOL_RANDOM; 4638 } 4639 | SOURCEHASH hashkey { 4640 if (pool_opts.type) { 4641 yyerror("pool type cannot be redefined"); 4642 YYERROR; 4643 } 4644 pool_opts.type = PF_POOL_SRCHASH; 4645 pool_opts.key = $2; 4646 } 4647 | ROUNDROBIN { 4648 if (pool_opts.type) { 4649 yyerror("pool type cannot be redefined"); 4650 YYERROR; 4651 } 4652 pool_opts.type = PF_POOL_ROUNDROBIN; 4653 } 4654 | STATICPORT { 4655 if (pool_opts.staticport) { 4656 yyerror("static-port cannot be redefined"); 4657 YYERROR; 4658 } 4659 pool_opts.staticport = 1; 4660 } 4661 | STICKYADDRESS { 4662 if (pool_opts.marker & POM_STICKYADDRESS) { 4663 yyerror("sticky-address cannot be redefined"); 4664 YYERROR; 4665 } 4666 pool_opts.marker |= POM_STICKYADDRESS; 4667 pool_opts.opts |= PF_POOL_STICKYADDR; 4668 } 4669 | ENDPI { 4670 if (pool_opts.marker & POM_ENDPI) { 4671 yyerror("endpoint-independent cannot be redefined"); 4672 YYERROR; 4673 } 4674 pool_opts.marker |= POM_ENDPI; 4675 pool_opts.opts |= PF_POOL_ENDPI; 4676 } 4677 | MAPEPORTSET number '/' number '/' number { 4678 if (pool_opts.mape.offset) { 4679 yyerror("map-e-portset cannot be redefined"); 4680 YYERROR; 4681 } 4682 if (pool_opts.type) { 4683 yyerror("map-e-portset cannot be used with " 4684 "address pools"); 4685 YYERROR; 4686 } 4687 if ($2 <= 0 || $2 >= 16) { 4688 yyerror("MAP-E PSID offset must be 1-15"); 4689 YYERROR; 4690 } 4691 if ($4 < 0 || $4 >= 16 || $2 + $4 > 16) { 4692 yyerror("Invalid MAP-E PSID length"); 4693 YYERROR; 4694 } else if ($4 == 0) { 4695 yyerror("PSID Length = 0: this means" 4696 " you do not need MAP-E"); 4697 YYERROR; 4698 } 4699 if ($6 < 0 || $6 > 65535) { 4700 yyerror("Invalid MAP-E PSID"); 4701 YYERROR; 4702 } 4703 pool_opts.mape.offset = $2; 4704 pool_opts.mape.psidlen = $4; 4705 pool_opts.mape.psid = $6; 4706 } 4707 ; 4708 4709 binat_redirspec : /* empty */ { $$ = NULL; } 4710 | ARROW host { 4711 $$ = calloc(1, sizeof(struct redirspec)); 4712 if ($$ == NULL) 4713 err(1, "redirspec: calloc"); 4714 $$->host = $2; 4715 $$->rport.a = $$->rport.b = $$->rport.t = 0; 4716 } 4717 | ARROW host PORT portstar { 4718 $$ = calloc(1, sizeof(struct redirspec)); 4719 if ($$ == NULL) 4720 err(1, "redirspec: calloc"); 4721 $$->host = $2; 4722 $$->rport = $4; 4723 } 4724 ; 4725 4726 natpasslog : /* empty */ { $$.b1 = $$.b2 = 0; $$.w2 = 0; } 4727 | PASS { $$.b1 = 1; $$.b2 = 0; $$.w2 = 0; } 4728 | PASS log { $$.b1 = 1; $$.b2 = $2.log; $$.w2 = $2.logif; } 4729 | log { $$.b1 = 0; $$.b2 = $1.log; $$.w2 = $1.logif; } 4730 ; 4731 4732 nataction : no NAT natpasslog { 4733 if ($1 && $3.b1) { 4734 yyerror("\"pass\" not valid with \"no\""); 4735 YYERROR; 4736 } 4737 if ($1) 4738 $$.b1 = PF_NONAT; 4739 else 4740 $$.b1 = PF_NAT; 4741 $$.b2 = $3.b1; 4742 $$.w = $3.b2; 4743 $$.w2 = $3.w2; 4744 } 4745 | no RDR natpasslog { 4746 if ($1 && $3.b1) { 4747 yyerror("\"pass\" not valid with \"no\""); 4748 YYERROR; 4749 } 4750 if ($1) 4751 $$.b1 = PF_NORDR; 4752 else 4753 $$.b1 = PF_RDR; 4754 $$.b2 = $3.b1; 4755 $$.w = $3.b2; 4756 $$.w2 = $3.w2; 4757 } 4758 ; 4759 4760 natrule : nataction interface af proto fromto tag tagged rtable 4761 nat_redirspec 4762 { 4763 struct pfctl_rule r; 4764 struct node_state_opt *o; 4765 4766 if (check_rulestate(PFCTL_STATE_NAT)) 4767 YYERROR; 4768 4769 pfctl_init_rule(&r); 4770 4771 r.action = $1.b1; 4772 r.natpass = $1.b2; 4773 r.log = $1.w; 4774 r.logif = $1.w2; 4775 r.af = $3; 4776 4777 if (!r.af) { 4778 if ($5.src.host && $5.src.host->af && 4779 !$5.src.host->ifindex) 4780 r.af = $5.src.host->af; 4781 else if ($5.dst.host && $5.dst.host->af && 4782 !$5.dst.host->ifindex) 4783 r.af = $5.dst.host->af; 4784 } 4785 4786 if ($6 != NULL) 4787 if (strlcpy(r.tagname, $6, PF_TAG_NAME_SIZE) >= 4788 PF_TAG_NAME_SIZE) { 4789 yyerror("tag too long, max %u chars", 4790 PF_TAG_NAME_SIZE - 1); 4791 YYERROR; 4792 } 4793 4794 if ($7.name) 4795 if (strlcpy(r.match_tagname, $7.name, 4796 PF_TAG_NAME_SIZE) >= PF_TAG_NAME_SIZE) { 4797 yyerror("tag too long, max %u chars", 4798 PF_TAG_NAME_SIZE - 1); 4799 YYERROR; 4800 } 4801 r.match_tag_not = $7.neg; 4802 r.rtableid = $8; 4803 4804 if (r.action == PF_NONAT || r.action == PF_NORDR) { 4805 if ($9 != NULL) { 4806 yyerror("translation rule with 'no' " 4807 "does not need '->'"); 4808 YYERROR; 4809 } 4810 } else { 4811 if ($9 == NULL || $9->host == NULL) { 4812 yyerror("translation rule requires '-> " 4813 "address'"); 4814 YYERROR; 4815 } 4816 if (!r.af && ! $9->host->ifindex) 4817 r.af = $9->host->af; 4818 4819 remove_invalid_hosts(&$9->host, &r.af); 4820 if (invalid_redirect($9->host, r.af)) 4821 YYERROR; 4822 if ($9->host->addr.type == PF_ADDR_DYNIFTL) { 4823 if (($9->host = gen_dynnode($9->host, r.af)) == NULL) 4824 err(1, "calloc"); 4825 } 4826 if (check_netmask($9->host, r.af)) 4827 YYERROR; 4828 } 4829 4830 o = keep_state_defaults; 4831 while (o) { 4832 switch (o->type) { 4833 case PF_STATE_OPT_PFLOW: 4834 if (r.rule_flag & PFRULE_PFLOW) { 4835 yyerror("state pflow option: " 4836 "multiple definitions"); 4837 YYERROR; 4838 } 4839 r.rule_flag |= PFRULE_PFLOW; 4840 break; 4841 } 4842 o = o->next; 4843 } 4844 4845 expand_rule(&r, false, $2, NULL, $9, NULL, $4, 4846 $5.src_os, $5.src.host, $5.src.port, $5.dst.host, 4847 $5.dst.port, 0, 0, 0, 0, ""); 4848 } 4849 ; 4850 4851 binatrule : no BINAT natpasslog interface af proto FROM ipspec toipspec tag 4852 tagged rtable binat_redirspec 4853 { 4854 struct pfctl_rule binat; 4855 struct pf_pooladdr *pa; 4856 4857 if (check_rulestate(PFCTL_STATE_NAT)) 4858 YYERROR; 4859 if (disallow_urpf_failed($9, "\"urpf-failed\" is not " 4860 "permitted as a binat destination")) 4861 YYERROR; 4862 4863 pfctl_init_rule(&binat); 4864 4865 if ($1 && $3.b1) { 4866 yyerror("\"pass\" not valid with \"no\""); 4867 YYERROR; 4868 } 4869 if ($1) 4870 binat.action = PF_NOBINAT; 4871 else 4872 binat.action = PF_BINAT; 4873 binat.natpass = $3.b1; 4874 binat.log = $3.b2; 4875 binat.logif = $3.w2; 4876 binat.af = $5; 4877 if (!binat.af && $8 != NULL && $8->af) 4878 binat.af = $8->af; 4879 if (!binat.af && $9 != NULL && $9->af) 4880 binat.af = $9->af; 4881 4882 if (!binat.af && $13 != NULL && $13->host) 4883 binat.af = $13->host->af; 4884 if (!binat.af) { 4885 yyerror("address family (inet/inet6) " 4886 "undefined"); 4887 YYERROR; 4888 } 4889 4890 if ($4 != NULL) { 4891 memcpy(binat.ifname, $4->ifname, 4892 sizeof(binat.ifname)); 4893 binat.ifnot = $4->not; 4894 free($4); 4895 } 4896 4897 if ($10 != NULL) 4898 if (strlcpy(binat.tagname, $10, 4899 PF_TAG_NAME_SIZE) >= PF_TAG_NAME_SIZE) { 4900 yyerror("tag too long, max %u chars", 4901 PF_TAG_NAME_SIZE - 1); 4902 YYERROR; 4903 } 4904 if ($11.name) 4905 if (strlcpy(binat.match_tagname, $11.name, 4906 PF_TAG_NAME_SIZE) >= PF_TAG_NAME_SIZE) { 4907 yyerror("tag too long, max %u chars", 4908 PF_TAG_NAME_SIZE - 1); 4909 YYERROR; 4910 } 4911 binat.match_tag_not = $11.neg; 4912 binat.rtableid = $12; 4913 4914 if ($6 != NULL) { 4915 binat.proto = $6->proto; 4916 free($6); 4917 } 4918 4919 if ($8 != NULL && disallow_table($8, "invalid use of " 4920 "table <%s> as the source address of a binat rule")) 4921 YYERROR; 4922 if ($8 != NULL && disallow_alias($8, "invalid use of " 4923 "interface (%s) as the source address of a binat " 4924 "rule")) 4925 YYERROR; 4926 if ($13 != NULL && $13->host != NULL && disallow_table( 4927 $13->host, "invalid use of table <%s> as the " 4928 "redirect address of a binat rule")) 4929 YYERROR; 4930 if ($13 != NULL && $13->host != NULL && disallow_alias( 4931 $13->host, "invalid use of interface (%s) as the " 4932 "redirect address of a binat rule")) 4933 YYERROR; 4934 4935 if ($8 != NULL) { 4936 if ($8->next) { 4937 yyerror("multiple binat ip addresses"); 4938 YYERROR; 4939 } 4940 if ($8->addr.type == PF_ADDR_DYNIFTL) 4941 $8->af = binat.af; 4942 if ($8->af != binat.af) { 4943 yyerror("binat ip versions must match"); 4944 YYERROR; 4945 } 4946 if ($8->addr.type == PF_ADDR_DYNIFTL) { 4947 if (($8 = gen_dynnode($8, binat.af)) == NULL) 4948 err(1, "calloc"); 4949 } 4950 if (check_netmask($8, binat.af)) 4951 YYERROR; 4952 memcpy(&binat.src.addr, &$8->addr, 4953 sizeof(binat.src.addr)); 4954 free($8); 4955 } 4956 if ($9 != NULL) { 4957 if ($9->next) { 4958 yyerror("multiple binat ip addresses"); 4959 YYERROR; 4960 } 4961 if ($9->af != binat.af && $9->af) { 4962 yyerror("binat ip versions must match"); 4963 YYERROR; 4964 } 4965 if ($9->addr.type == PF_ADDR_DYNIFTL) { 4966 if (($9 = gen_dynnode($9, binat.af)) == NULL) 4967 err(1, "calloc"); 4968 } 4969 if (check_netmask($9, binat.af)) 4970 YYERROR; 4971 memcpy(&binat.dst.addr, &$9->addr, 4972 sizeof(binat.dst.addr)); 4973 binat.dst.neg = $9->not; 4974 free($9); 4975 } 4976 4977 if (binat.action == PF_NOBINAT) { 4978 if ($13 != NULL) { 4979 yyerror("'no binat' rule does not need" 4980 " '->'"); 4981 YYERROR; 4982 } 4983 } else { 4984 if ($13 == NULL || $13->host == NULL) { 4985 yyerror("'binat' rule requires" 4986 " '-> address'"); 4987 YYERROR; 4988 } 4989 4990 remove_invalid_hosts(&$13->host, &binat.af); 4991 if (invalid_redirect($13->host, binat.af)) 4992 YYERROR; 4993 if ($13->host->next != NULL) { 4994 yyerror("binat rule must redirect to " 4995 "a single address"); 4996 YYERROR; 4997 } 4998 if ($13->host->addr.type == PF_ADDR_DYNIFTL) { 4999 if (($13->host = gen_dynnode($13->host, binat.af)) == NULL) 5000 err(1, "calloc"); 5001 } 5002 if (check_netmask($13->host, binat.af)) 5003 YYERROR; 5004 5005 if (!PF_AZERO(&binat.src.addr.v.a.mask, 5006 binat.af) && 5007 !PF_AEQ(&binat.src.addr.v.a.mask, 5008 &$13->host->addr.v.a.mask, binat.af)) { 5009 yyerror("'binat' source mask and " 5010 "redirect mask must be the same"); 5011 YYERROR; 5012 } 5013 5014 pa = calloc(1, sizeof(struct pf_pooladdr)); 5015 if (pa == NULL) 5016 err(1, "binat: calloc"); 5017 pa->addr = $13->host->addr; 5018 pa->ifname[0] = 0; 5019 TAILQ_INSERT_TAIL(&binat.rdr.list, 5020 pa, entries); 5021 5022 free($13); 5023 } 5024 5025 pfctl_append_rule(pf, &binat, ""); 5026 } 5027 ; 5028 5029 tag : /* empty */ { $$ = NULL; } 5030 | TAG STRING { $$ = $2; } 5031 ; 5032 5033 tagged : /* empty */ { $$.neg = 0; $$.name = NULL; } 5034 | not TAGGED string { $$.neg = $1; $$.name = $3; } 5035 ; 5036 5037 rtable : /* empty */ { $$ = -1; } 5038 | RTABLE NUMBER { 5039 if ($2 < 0 || $2 > rt_tableid_max()) { 5040 yyerror("invalid rtable id"); 5041 YYERROR; 5042 } 5043 $$ = $2; 5044 } 5045 ; 5046 5047 route_host : STRING { 5048 $$ = calloc(1, sizeof(struct node_host)); 5049 if ($$ == NULL) 5050 err(1, "route_host: calloc"); 5051 if (strlen($1) >= IFNAMSIZ) { 5052 yyerror("interface name too long"); 5053 YYERROR; 5054 } 5055 $$->ifname = strdup($1); 5056 set_ipmask($$, 128); 5057 $$->next = NULL; 5058 $$->tail = $$; 5059 } 5060 | '(' STRING host ')' { 5061 struct node_host *n; 5062 5063 $$ = $3; 5064 for (n = $3; n != NULL; n = n->next) { 5065 if (strlen($2) >= IFNAMSIZ) { 5066 yyerror("interface name too long"); 5067 YYERROR; 5068 } 5069 n->ifname = strdup($2); 5070 } 5071 } 5072 ; 5073 5074 route_host_list : route_host optnl { $$ = $1; } 5075 | route_host_list comma route_host optnl { 5076 if ($1->af == 0) 5077 $1->af = $3->af; 5078 if ($1->af != $3->af) { 5079 yyerror("all pool addresses must be in the " 5080 "same address family"); 5081 YYERROR; 5082 } 5083 $1->tail->next = $3; 5084 $1->tail = $3->tail; 5085 $$ = $1; 5086 } 5087 ; 5088 5089 routespec : route_host { $$ = $1; } 5090 | '{' optnl route_host_list '}' { $$ = $3; } 5091 ; 5092 5093 route : /* empty */ { 5094 $$.rt = PF_NOPFROUTE; 5095 } 5096 | FASTROUTE { 5097 /* backwards-compat */ 5098 $$.rt = PF_NOPFROUTE; 5099 } 5100 | ROUTETO route_redirspec { 5101 $$.rt = PF_ROUTETO; 5102 $$.redirspec = $2; 5103 } 5104 | REPLYTO route_redirspec { 5105 $$.rt = PF_REPLYTO; 5106 $$.redirspec = $2; 5107 } 5108 | DUPTO route_redirspec { 5109 $$.rt = PF_DUPTO; 5110 $$.redirspec = $2; 5111 } 5112 ; 5113 5114 timeout_spec : STRING NUMBER 5115 { 5116 if (check_rulestate(PFCTL_STATE_OPTION)) { 5117 free($1); 5118 YYERROR; 5119 } 5120 if ($2 < 0 || $2 > UINT_MAX) { 5121 yyerror("only positive values permitted"); 5122 YYERROR; 5123 } 5124 if (pfctl_apply_timeout(pf, $1, $2, 0) != 0) { 5125 yyerror("unknown timeout %s", $1); 5126 free($1); 5127 YYERROR; 5128 } 5129 free($1); 5130 } 5131 | INTERVAL NUMBER { 5132 if (check_rulestate(PFCTL_STATE_OPTION)) 5133 YYERROR; 5134 if ($2 < 0 || $2 > UINT_MAX) { 5135 yyerror("only positive values permitted"); 5136 YYERROR; 5137 } 5138 if (pfctl_apply_timeout(pf, "interval", $2, 0) != 0) 5139 YYERROR; 5140 } 5141 ; 5142 5143 timeout_list : timeout_list comma timeout_spec optnl 5144 | timeout_spec optnl 5145 ; 5146 5147 limit_spec : STRING NUMBER 5148 { 5149 if (check_rulestate(PFCTL_STATE_OPTION)) { 5150 free($1); 5151 YYERROR; 5152 } 5153 if ($2 < 0 || $2 > UINT_MAX) { 5154 yyerror("only positive values permitted"); 5155 YYERROR; 5156 } 5157 if (pfctl_apply_limit(pf, $1, $2) != 0) { 5158 yyerror("unable to set limit %s %u", $1, $2); 5159 free($1); 5160 YYERROR; 5161 } 5162 free($1); 5163 } 5164 ; 5165 5166 limit_list : limit_list comma limit_spec optnl 5167 | limit_spec optnl 5168 ; 5169 5170 comma : ',' 5171 | /* empty */ 5172 ; 5173 5174 yesno : NO { $$ = 0; } 5175 | STRING { 5176 if (!strcmp($1, "yes")) 5177 $$ = 1; 5178 else { 5179 yyerror("invalid value '%s', expected 'yes' " 5180 "or 'no'", $1); 5181 free($1); 5182 YYERROR; 5183 } 5184 free($1); 5185 } 5186 ; 5187 5188 unaryop : '=' { $$ = PF_OP_EQ; } 5189 | NE { $$ = PF_OP_NE; } 5190 | LE { $$ = PF_OP_LE; } 5191 | '<' { $$ = PF_OP_LT; } 5192 | GE { $$ = PF_OP_GE; } 5193 | '>' { $$ = PF_OP_GT; } 5194 ; 5195 5196 %% 5197 5198 int 5199 yyerror(const char *fmt, ...) 5200 { 5201 va_list ap; 5202 5203 file->errors++; 5204 va_start(ap, fmt); 5205 fprintf(stderr, "%s:%d: ", file->name, yylval.lineno); 5206 vfprintf(stderr, fmt, ap); 5207 fprintf(stderr, "\n"); 5208 va_end(ap); 5209 return (0); 5210 } 5211 5212 int 5213 validate_range(uint8_t op, uint16_t p1, uint16_t p2) 5214 { 5215 uint16_t a = ntohs(p1); 5216 uint16_t b = ntohs(p2); 5217 5218 if ((op == PF_OP_RRG && a > b) || /* 34:12, i.e. none */ 5219 (op == PF_OP_IRG && a >= b) || /* 34><12, i.e. none */ 5220 (op == PF_OP_XRG && a > b)) /* 34<>22, i.e. all */ 5221 return 1; 5222 return 0; 5223 } 5224 5225 int 5226 disallow_table(struct node_host *h, const char *fmt) 5227 { 5228 for (; h != NULL; h = h->next) 5229 if (h->addr.type == PF_ADDR_TABLE) { 5230 yyerror(fmt, h->addr.v.tblname); 5231 return (1); 5232 } 5233 return (0); 5234 } 5235 5236 int 5237 disallow_urpf_failed(struct node_host *h, const char *fmt) 5238 { 5239 for (; h != NULL; h = h->next) 5240 if (h->addr.type == PF_ADDR_URPFFAILED) { 5241 yyerror(fmt); 5242 return (1); 5243 } 5244 return (0); 5245 } 5246 5247 int 5248 disallow_alias(struct node_host *h, const char *fmt) 5249 { 5250 for (; h != NULL; h = h->next) 5251 if (DYNIF_MULTIADDR(h->addr)) { 5252 yyerror(fmt, h->addr.v.tblname); 5253 return (1); 5254 } 5255 return (0); 5256 } 5257 5258 int 5259 rule_consistent(struct pfctl_rule *r, int anchor_call) 5260 { 5261 int problems = 0; 5262 5263 switch (r->action) { 5264 case PF_PASS: 5265 case PF_MATCH: 5266 case PF_DROP: 5267 case PF_SCRUB: 5268 case PF_NOSCRUB: 5269 problems = filter_consistent(r, anchor_call); 5270 break; 5271 case PF_NAT: 5272 case PF_NONAT: 5273 problems = nat_consistent(r); 5274 break; 5275 case PF_RDR: 5276 case PF_NORDR: 5277 problems = rdr_consistent(r); 5278 break; 5279 case PF_BINAT: 5280 case PF_NOBINAT: 5281 default: 5282 break; 5283 } 5284 return (problems); 5285 } 5286 5287 int 5288 filter_consistent(struct pfctl_rule *r, int anchor_call) 5289 { 5290 int problems = 0; 5291 5292 if (r->proto != IPPROTO_TCP && r->proto != IPPROTO_UDP && 5293 r->proto != IPPROTO_SCTP && 5294 (r->src.port_op || r->dst.port_op)) { 5295 yyerror("port only applies to tcp/udp/sctp"); 5296 problems++; 5297 } 5298 if (r->proto != IPPROTO_ICMP && r->proto != IPPROTO_ICMPV6 && 5299 (r->type || r->code)) { 5300 yyerror("icmp-type/code only applies to icmp"); 5301 problems++; 5302 } 5303 if (!r->af && (r->type || r->code)) { 5304 yyerror("must indicate address family with icmp-type/code"); 5305 problems++; 5306 } 5307 if (r->rule_flag & PFRULE_AFTO && r->af == r->naf) { 5308 yyerror("must indicate different address family with af-to"); 5309 problems++; 5310 } 5311 if (r->overload_tblname[0] && 5312 r->max_src_conn == 0 && r->max_src_conn_rate.seconds == 0) { 5313 yyerror("'overload' requires 'max-src-conn' " 5314 "or 'max-src-conn-rate'"); 5315 problems++; 5316 } 5317 if ((r->proto == IPPROTO_ICMP && r->af == AF_INET6) || 5318 (r->proto == IPPROTO_ICMPV6 && r->af == AF_INET)) { 5319 yyerror("proto %s doesn't match address family %s", 5320 r->proto == IPPROTO_ICMP ? "icmp" : "icmp6", 5321 r->af == AF_INET ? "inet" : "inet6"); 5322 problems++; 5323 } 5324 if (r->allow_opts && r->action != PF_PASS && r->action != PF_MATCH) { 5325 yyerror("allow-opts can only be specified for pass or " 5326 "match rules"); 5327 problems++; 5328 } 5329 if (r->rule_flag & PFRULE_FRAGMENT && (r->src.port_op || 5330 r->dst.port_op || r->flagset || r->type || r->code)) { 5331 yyerror("fragments can be filtered only on IP header fields"); 5332 problems++; 5333 } 5334 if (r->rule_flag & PFRULE_RETURNRST && r->proto != IPPROTO_TCP) { 5335 yyerror("return-rst can only be applied to TCP rules"); 5336 problems++; 5337 } 5338 if (r->max_src_nodes && !(r->rule_flag & PFRULE_RULESRCTRACK)) { 5339 yyerror("max-src-nodes requires 'source-track rule'"); 5340 problems++; 5341 } 5342 if (r->action != PF_PASS && r->keep_state) { 5343 yyerror("keep state is great, but only for pass rules"); 5344 problems++; 5345 } 5346 if (r->rule_flag & PFRULE_STATESLOPPY && 5347 (r->keep_state == PF_STATE_MODULATE || 5348 r->keep_state == PF_STATE_SYNPROXY)) { 5349 yyerror("sloppy state matching cannot be used with " 5350 "synproxy state or modulate state"); 5351 problems++; 5352 } 5353 if ((r->keep_state == PF_STATE_SYNPROXY) && (r->direction != PF_IN)) 5354 fprintf(stderr, "%s:%d: warning: " 5355 "synproxy used for inbound rules only, " 5356 "ignored for outbound\n", file->name, yylval.lineno); 5357 if (r->rule_flag & PFRULE_AFTO && r->rt) { 5358 if (r->rt != PF_ROUTETO && r->rt != PF_REPLYTO) { 5359 yyerror("dup-to " 5360 "must not be used on af-to rules"); 5361 problems++; 5362 } 5363 } 5364 /* Basic rule sanity check. */ 5365 switch (r->action) { 5366 case PF_MATCH: 5367 if (r->divert.port) { 5368 yyerror("divert is not supported on match rules"); 5369 problems++; 5370 } 5371 if (r->rt) { 5372 yyerror("route-to, reply-to, dup-to and fastroute " 5373 "must not be used on match rules"); 5374 problems++; 5375 } 5376 if (r->rule_flag & PFRULE_AFTO) { 5377 yyerror("af-to is not supported on match rules"); 5378 problems++; 5379 } 5380 break; 5381 case PF_DROP: 5382 if (r->rt) { 5383 yyerror("route-to, reply-to and dup-to " 5384 "are not supported on block rules"); 5385 problems++; 5386 } 5387 break; 5388 default:; 5389 } 5390 if (!TAILQ_EMPTY(&(r->nat.list)) || !TAILQ_EMPTY(&(r->rdr.list))) { 5391 if (r->action != PF_MATCH && !r->keep_state) { 5392 yyerror("nat-to and rdr-to require keep state"); 5393 problems++; 5394 } 5395 if (r->direction == PF_INOUT) { 5396 yyerror("nat-to and rdr-to require a direction"); 5397 problems++; 5398 } 5399 } 5400 if (r->route.opts & PF_POOL_STICKYADDR && !r->keep_state) { 5401 yyerror("'sticky-address' requires 'keep state'"); 5402 } 5403 return (-problems); 5404 } 5405 5406 int 5407 nat_consistent(struct pfctl_rule *r) 5408 { 5409 return (0); /* yeah! */ 5410 } 5411 5412 int 5413 rdr_consistent(struct pfctl_rule *r) 5414 { 5415 int problems = 0; 5416 5417 if (r->proto != IPPROTO_TCP && r->proto != IPPROTO_UDP && 5418 r->proto != IPPROTO_SCTP) { 5419 if (r->src.port_op) { 5420 yyerror("src port only applies to tcp/udp/sctp"); 5421 problems++; 5422 } 5423 if (r->dst.port_op) { 5424 yyerror("dst port only applies to tcp/udp/sctp"); 5425 problems++; 5426 } 5427 if (r->rdr.proxy_port[0]) { 5428 yyerror("rdr port only applies to tcp/udp/sctp"); 5429 problems++; 5430 } 5431 } 5432 if (r->dst.port_op && 5433 r->dst.port_op != PF_OP_EQ && r->dst.port_op != PF_OP_RRG) { 5434 yyerror("invalid port operator for rdr destination port"); 5435 problems++; 5436 } 5437 return (-problems); 5438 } 5439 5440 int 5441 process_tabledef(char *name, struct table_opts *opts, int popts) 5442 { 5443 struct pfr_buffer ab; 5444 struct node_tinit *ti; 5445 unsigned long maxcount; 5446 size_t s = sizeof(maxcount); 5447 5448 bzero(&ab, sizeof(ab)); 5449 ab.pfrb_type = PFRB_ADDRS; 5450 SIMPLEQ_FOREACH(ti, &opts->init_nodes, entries) { 5451 if (ti->file) 5452 if (pfr_buf_load(&ab, ti->file, 0, append_addr, popts)) { 5453 if (errno) 5454 yyerror("cannot load \"%s\": %s", 5455 ti->file, strerror(errno)); 5456 else 5457 yyerror("file \"%s\" contains bad data", 5458 ti->file); 5459 goto _error; 5460 } 5461 if (ti->host) 5462 if (append_addr_host(&ab, ti->host, 0, 0)) { 5463 yyerror("cannot create address buffer: %s", 5464 strerror(errno)); 5465 goto _error; 5466 } 5467 } 5468 if (pf->opts & PF_OPT_VERBOSE) 5469 print_tabledef(name, opts->flags, opts->init_addr, 5470 &opts->init_nodes); 5471 if (!(pf->opts & PF_OPT_NOACTION) || 5472 (pf->opts & PF_OPT_DUMMYACTION)) 5473 warn_duplicate_tables(name, pf->anchor->path); 5474 else if (pf->opts & PF_OPT_VERBOSE) 5475 fprintf(stderr, "%s:%d: skipping duplicate table checks" 5476 " for <%s>\n", file->name, yylval.lineno, name); 5477 if (!(pf->opts & PF_OPT_NOACTION) && 5478 pfctl_define_table(name, opts->flags, opts->init_addr, 5479 pf->anchor->path, &ab, pf->anchor->ruleset.tticket)) { 5480 5481 if (sysctlbyname("net.pf.request_maxcount", &maxcount, &s, 5482 NULL, 0) == -1) 5483 maxcount = 65535; 5484 5485 if (ab.pfrb_size > maxcount) 5486 yyerror("cannot define table %s: too many elements.\n" 5487 "Consider increasing net.pf.request_maxcount.", 5488 name); 5489 else 5490 yyerror("cannot define table %s: %s", name, 5491 pf_strerror(errno)); 5492 5493 goto _error; 5494 } 5495 pf->tdirty = 1; 5496 pfr_buf_clear(&ab); 5497 return (0); 5498 _error: 5499 pfr_buf_clear(&ab); 5500 return (-1); 5501 } 5502 5503 struct keywords { 5504 const char *k_name; 5505 int k_val; 5506 }; 5507 5508 /* macro gore, but you should've seen the prior indentation nightmare... */ 5509 5510 #define FREE_LIST(T,r) \ 5511 do { \ 5512 T *p, *node = r; \ 5513 while (node != NULL) { \ 5514 p = node; \ 5515 node = node->next; \ 5516 free(p); \ 5517 } \ 5518 } while (0) 5519 5520 #define LOOP_THROUGH(T,n,r,C) \ 5521 do { \ 5522 T *n; \ 5523 if (r == NULL) { \ 5524 r = calloc(1, sizeof(T)); \ 5525 if (r == NULL) \ 5526 err(1, "LOOP: calloc"); \ 5527 r->next = NULL; \ 5528 } \ 5529 n = r; \ 5530 while (n != NULL) { \ 5531 do { \ 5532 C; \ 5533 } while (0); \ 5534 n = n->next; \ 5535 } \ 5536 } while (0) 5537 5538 void 5539 expand_label_str(char *label, size_t len, const char *srch, const char *repl) 5540 { 5541 char *tmp; 5542 char *p, *q; 5543 5544 if ((tmp = calloc(1, len)) == NULL) 5545 err(1, "%s: calloc", __func__); 5546 p = q = label; 5547 while ((q = strstr(p, srch)) != NULL) { 5548 *q = '\0'; 5549 if ((strlcat(tmp, p, len) >= len) || 5550 (strlcat(tmp, repl, len) >= len)) 5551 errx(1, "%s: label too long", __func__); 5552 q += strlen(srch); 5553 p = q; 5554 } 5555 if (strlcat(tmp, p, len) >= len) 5556 errx(1, "%s: label too long", __func__); 5557 strlcpy(label, tmp, len); /* always fits */ 5558 free(tmp); 5559 } 5560 5561 void 5562 expand_label_if(const char *name, char *label, size_t len, const char *ifname) 5563 { 5564 if (strstr(label, name) != NULL) { 5565 if (!*ifname) 5566 expand_label_str(label, len, name, "any"); 5567 else 5568 expand_label_str(label, len, name, ifname); 5569 } 5570 } 5571 5572 void 5573 expand_label_addr(const char *name, char *label, size_t len, sa_family_t af, 5574 struct pf_rule_addr *addr) 5575 { 5576 char tmp[64], tmp_not[66]; 5577 5578 if (strstr(label, name) != NULL) { 5579 switch (addr->addr.type) { 5580 case PF_ADDR_DYNIFTL: 5581 snprintf(tmp, sizeof(tmp), "(%s)", addr->addr.v.ifname); 5582 break; 5583 case PF_ADDR_TABLE: 5584 snprintf(tmp, sizeof(tmp), "<%s>", addr->addr.v.tblname); 5585 break; 5586 case PF_ADDR_NOROUTE: 5587 snprintf(tmp, sizeof(tmp), "no-route"); 5588 break; 5589 case PF_ADDR_URPFFAILED: 5590 snprintf(tmp, sizeof(tmp), "urpf-failed"); 5591 break; 5592 case PF_ADDR_ADDRMASK: 5593 if (!af || (PF_AZERO(&addr->addr.v.a.addr, af) && 5594 PF_AZERO(&addr->addr.v.a.mask, af))) 5595 snprintf(tmp, sizeof(tmp), "any"); 5596 else { 5597 char a[48]; 5598 int bits; 5599 5600 if (inet_ntop(af, &addr->addr.v.a.addr, a, 5601 sizeof(a)) == NULL) 5602 snprintf(tmp, sizeof(tmp), "?"); 5603 else { 5604 bits = unmask(&addr->addr.v.a.mask); 5605 if ((af == AF_INET && bits < 32) || 5606 (af == AF_INET6 && bits < 128)) 5607 snprintf(tmp, sizeof(tmp), 5608 "%s/%d", a, bits); 5609 else 5610 snprintf(tmp, sizeof(tmp), 5611 "%s", a); 5612 } 5613 } 5614 break; 5615 default: 5616 snprintf(tmp, sizeof(tmp), "?"); 5617 break; 5618 } 5619 5620 if (addr->neg) { 5621 snprintf(tmp_not, sizeof(tmp_not), "! %s", tmp); 5622 expand_label_str(label, len, name, tmp_not); 5623 } else 5624 expand_label_str(label, len, name, tmp); 5625 } 5626 } 5627 5628 void 5629 expand_label_port(const char *name, char *label, size_t len, 5630 struct pf_rule_addr *addr) 5631 { 5632 char a1[6], a2[6], op[13] = ""; 5633 5634 if (strstr(label, name) != NULL) { 5635 snprintf(a1, sizeof(a1), "%u", ntohs(addr->port[0])); 5636 snprintf(a2, sizeof(a2), "%u", ntohs(addr->port[1])); 5637 if (!addr->port_op) 5638 ; 5639 else if (addr->port_op == PF_OP_IRG) 5640 snprintf(op, sizeof(op), "%s><%s", a1, a2); 5641 else if (addr->port_op == PF_OP_XRG) 5642 snprintf(op, sizeof(op), "%s<>%s", a1, a2); 5643 else if (addr->port_op == PF_OP_EQ) 5644 snprintf(op, sizeof(op), "%s", a1); 5645 else if (addr->port_op == PF_OP_NE) 5646 snprintf(op, sizeof(op), "!=%s", a1); 5647 else if (addr->port_op == PF_OP_LT) 5648 snprintf(op, sizeof(op), "<%s", a1); 5649 else if (addr->port_op == PF_OP_LE) 5650 snprintf(op, sizeof(op), "<=%s", a1); 5651 else if (addr->port_op == PF_OP_GT) 5652 snprintf(op, sizeof(op), ">%s", a1); 5653 else if (addr->port_op == PF_OP_GE) 5654 snprintf(op, sizeof(op), ">=%s", a1); 5655 expand_label_str(label, len, name, op); 5656 } 5657 } 5658 5659 void 5660 expand_label_proto(const char *name, char *label, size_t len, u_int8_t proto) 5661 { 5662 const char *protoname; 5663 char n[4]; 5664 5665 if (strstr(label, name) != NULL) { 5666 protoname = pfctl_proto2name(proto); 5667 if (protoname != NULL) 5668 expand_label_str(label, len, name, protoname); 5669 else { 5670 snprintf(n, sizeof(n), "%u", proto); 5671 expand_label_str(label, len, name, n); 5672 } 5673 } 5674 } 5675 5676 void 5677 expand_label_nr(const char *name, char *label, size_t len, 5678 struct pfctl_rule *r) 5679 { 5680 char n[11]; 5681 5682 if (strstr(label, name) != NULL) { 5683 snprintf(n, sizeof(n), "%u", r->nr); 5684 expand_label_str(label, len, name, n); 5685 } 5686 } 5687 5688 void 5689 expand_label(char *label, size_t len, struct pfctl_rule *r) 5690 { 5691 expand_label_if("$if", label, len, r->ifname); 5692 expand_label_addr("$srcaddr", label, len, r->af, &r->src); 5693 expand_label_addr("$dstaddr", label, len, r->af, &r->dst); 5694 expand_label_port("$srcport", label, len, &r->src); 5695 expand_label_port("$dstport", label, len, &r->dst); 5696 expand_label_proto("$proto", label, len, r->proto); 5697 expand_label_nr("$nr", label, len, r); 5698 } 5699 5700 int 5701 expand_altq(struct pf_altq *a, struct node_if *interfaces, 5702 struct node_queue *nqueues, struct node_queue_bw bwspec, 5703 struct node_queue_opt *opts) 5704 { 5705 struct pf_altq pa, pb; 5706 char qname[PF_QNAME_SIZE]; 5707 struct node_queue *n; 5708 struct node_queue_bw bw; 5709 int errs = 0; 5710 5711 if ((pf->loadopt & PFCTL_FLAG_ALTQ) == 0) { 5712 FREE_LIST(struct node_if, interfaces); 5713 if (nqueues) 5714 FREE_LIST(struct node_queue, nqueues); 5715 return (0); 5716 } 5717 5718 LOOP_THROUGH(struct node_if, interface, interfaces, 5719 memcpy(&pa, a, sizeof(struct pf_altq)); 5720 if (strlcpy(pa.ifname, interface->ifname, 5721 sizeof(pa.ifname)) >= sizeof(pa.ifname)) 5722 errx(1, "%s: strlcpy", __func__); 5723 5724 if (interface->not) { 5725 yyerror("altq on ! <interface> is not supported"); 5726 errs++; 5727 } else { 5728 if (eval_pfaltq(pf, &pa, &bwspec, opts)) 5729 errs++; 5730 else 5731 if (pfctl_add_altq(pf, &pa)) 5732 errs++; 5733 5734 if (pf->opts & PF_OPT_VERBOSE) { 5735 print_altq(&pf->paltq->altq, 0, 5736 &bwspec, opts); 5737 if (nqueues && nqueues->tail) { 5738 printf("queue { "); 5739 LOOP_THROUGH(struct node_queue, queue, 5740 nqueues, 5741 printf("%s ", 5742 queue->queue); 5743 ); 5744 printf("}"); 5745 } 5746 printf("\n"); 5747 } 5748 5749 if (pa.scheduler == ALTQT_CBQ || 5750 pa.scheduler == ALTQT_HFSC || 5751 pa.scheduler == ALTQT_FAIRQ) { 5752 /* now create a root queue */ 5753 memset(&pb, 0, sizeof(struct pf_altq)); 5754 if (strlcpy(qname, "root_", sizeof(qname)) >= 5755 sizeof(qname)) 5756 errx(1, "%s: strlcpy", __func__); 5757 if (strlcat(qname, interface->ifname, 5758 sizeof(qname)) >= sizeof(qname)) 5759 errx(1, "%s: strlcat", __func__); 5760 if (strlcpy(pb.qname, qname, 5761 sizeof(pb.qname)) >= sizeof(pb.qname)) 5762 errx(1, "%s: strlcpy", __func__); 5763 if (strlcpy(pb.ifname, interface->ifname, 5764 sizeof(pb.ifname)) >= sizeof(pb.ifname)) 5765 errx(1, "%s: strlcpy", __func__); 5766 pb.qlimit = pa.qlimit; 5767 pb.scheduler = pa.scheduler; 5768 bw.bw_absolute = pa.ifbandwidth; 5769 bw.bw_percent = 0; 5770 if (eval_pfqueue(pf, &pb, &bw, opts)) 5771 errs++; 5772 else 5773 if (pfctl_add_altq(pf, &pb)) 5774 errs++; 5775 } 5776 5777 LOOP_THROUGH(struct node_queue, queue, nqueues, 5778 n = calloc(1, sizeof(struct node_queue)); 5779 if (n == NULL) 5780 err(1, "%s: calloc", __func__); 5781 if (pa.scheduler == ALTQT_CBQ || 5782 pa.scheduler == ALTQT_HFSC || 5783 pa.scheduler == ALTQT_FAIRQ) 5784 if (strlcpy(n->parent, qname, 5785 sizeof(n->parent)) >= 5786 sizeof(n->parent)) 5787 errx(1, "%s: strlcpy", __func__); 5788 if (strlcpy(n->queue, queue->queue, 5789 sizeof(n->queue)) >= sizeof(n->queue)) 5790 errx(1, "%s: strlcpy", __func__); 5791 if (strlcpy(n->ifname, interface->ifname, 5792 sizeof(n->ifname)) >= sizeof(n->ifname)) 5793 errx(1, "%s: strlcpy", __func__); 5794 n->scheduler = pa.scheduler; 5795 n->next = NULL; 5796 n->tail = n; 5797 if (queues == NULL) 5798 queues = n; 5799 else { 5800 queues->tail->next = n; 5801 queues->tail = n; 5802 } 5803 ); 5804 } 5805 ); 5806 FREE_LIST(struct node_if, interfaces); 5807 if (nqueues) 5808 FREE_LIST(struct node_queue, nqueues); 5809 5810 return (errs); 5811 } 5812 5813 int 5814 expand_queue(struct pf_altq *a, struct node_if *interfaces, 5815 struct node_queue *nqueues, struct node_queue_bw bwspec, 5816 struct node_queue_opt *opts) 5817 { 5818 struct node_queue *n, *nq; 5819 struct pf_altq pa; 5820 u_int8_t found = 0; 5821 u_int8_t errs = 0; 5822 5823 if ((pf->loadopt & PFCTL_FLAG_ALTQ) == 0) { 5824 FREE_LIST(struct node_queue, nqueues); 5825 return (0); 5826 } 5827 5828 if (queues == NULL) { 5829 yyerror("queue %s has no parent", a->qname); 5830 FREE_LIST(struct node_queue, nqueues); 5831 return (1); 5832 } 5833 5834 LOOP_THROUGH(struct node_if, interface, interfaces, 5835 LOOP_THROUGH(struct node_queue, tqueue, queues, 5836 if (!strncmp(a->qname, tqueue->queue, PF_QNAME_SIZE) && 5837 (interface->ifname[0] == 0 || 5838 (!interface->not && !strncmp(interface->ifname, 5839 tqueue->ifname, IFNAMSIZ)) || 5840 (interface->not && strncmp(interface->ifname, 5841 tqueue->ifname, IFNAMSIZ)))) { 5842 /* found ourself in queues */ 5843 found++; 5844 5845 memcpy(&pa, a, sizeof(struct pf_altq)); 5846 5847 if (pa.scheduler != ALTQT_NONE && 5848 pa.scheduler != tqueue->scheduler) { 5849 yyerror("exactly one scheduler type " 5850 "per interface allowed"); 5851 return (1); 5852 } 5853 pa.scheduler = tqueue->scheduler; 5854 5855 /* scheduler dependent error checking */ 5856 switch (pa.scheduler) { 5857 case ALTQT_PRIQ: 5858 if (nqueues != NULL) { 5859 yyerror("priq queues cannot " 5860 "have child queues"); 5861 return (1); 5862 } 5863 if (bwspec.bw_absolute > 0 || 5864 bwspec.bw_percent < 100) { 5865 yyerror("priq doesn't take " 5866 "bandwidth"); 5867 return (1); 5868 } 5869 break; 5870 default: 5871 break; 5872 } 5873 5874 if (strlcpy(pa.ifname, tqueue->ifname, 5875 sizeof(pa.ifname)) >= sizeof(pa.ifname)) 5876 errx(1, "%s: strlcpy", __func__); 5877 if (strlcpy(pa.parent, tqueue->parent, 5878 sizeof(pa.parent)) >= sizeof(pa.parent)) 5879 errx(1, "%s: strlcpy", __func__); 5880 5881 if (eval_pfqueue(pf, &pa, &bwspec, opts)) 5882 errs++; 5883 else 5884 if (pfctl_add_altq(pf, &pa)) 5885 errs++; 5886 5887 for (nq = nqueues; nq != NULL; nq = nq->next) { 5888 if (!strcmp(a->qname, nq->queue)) { 5889 yyerror("queue cannot have " 5890 "itself as child"); 5891 errs++; 5892 continue; 5893 } 5894 n = calloc(1, 5895 sizeof(struct node_queue)); 5896 if (n == NULL) 5897 err(1, "%s: calloc", __func__); 5898 if (strlcpy(n->parent, a->qname, 5899 sizeof(n->parent)) >= 5900 sizeof(n->parent)) 5901 errx(1, "%s strlcpy", __func__); 5902 if (strlcpy(n->queue, nq->queue, 5903 sizeof(n->queue)) >= 5904 sizeof(n->queue)) 5905 errx(1, "%s strlcpy", __func__); 5906 if (strlcpy(n->ifname, tqueue->ifname, 5907 sizeof(n->ifname)) >= 5908 sizeof(n->ifname)) 5909 errx(1, "%s strlcpy", __func__); 5910 n->scheduler = tqueue->scheduler; 5911 n->next = NULL; 5912 n->tail = n; 5913 if (queues == NULL) 5914 queues = n; 5915 else { 5916 queues->tail->next = n; 5917 queues->tail = n; 5918 } 5919 } 5920 if ((pf->opts & PF_OPT_VERBOSE) && ( 5921 (found == 1 && interface->ifname[0] == 0) || 5922 (found > 0 && interface->ifname[0] != 0))) { 5923 print_queue(&pf->paltq->altq, 0, 5924 &bwspec, interface->ifname[0] != 0, 5925 opts); 5926 if (nqueues && nqueues->tail) { 5927 printf("{ "); 5928 LOOP_THROUGH(struct node_queue, 5929 queue, nqueues, 5930 printf("%s ", 5931 queue->queue); 5932 ); 5933 printf("}"); 5934 } 5935 printf("\n"); 5936 } 5937 } 5938 ); 5939 ); 5940 5941 FREE_LIST(struct node_queue, nqueues); 5942 FREE_LIST(struct node_if, interfaces); 5943 5944 if (!found) { 5945 yyerror("queue %s has no parent", a->qname); 5946 errs++; 5947 } 5948 5949 if (errs) 5950 return (1); 5951 else 5952 return (0); 5953 } 5954 5955 static int 5956 pf_af_to_proto(sa_family_t af) 5957 { 5958 if (af == AF_INET) 5959 return (ETHERTYPE_IP); 5960 if (af == AF_INET6) 5961 return (ETHERTYPE_IPV6); 5962 5963 return (0); 5964 } 5965 5966 void 5967 expand_eth_rule(struct pfctl_eth_rule *r, 5968 struct node_if *interfaces, struct node_etherproto *protos, 5969 struct node_mac *srcs, struct node_mac *dsts, 5970 struct node_host *ipsrcs, struct node_host *ipdsts, 5971 const char *bridge_to, const char *anchor_call) 5972 { 5973 char tagname[PF_TAG_NAME_SIZE]; 5974 char match_tagname[PF_TAG_NAME_SIZE]; 5975 char qname[PF_QNAME_SIZE]; 5976 5977 if (strlcpy(tagname, r->tagname, sizeof(tagname)) >= sizeof(tagname)) 5978 errx(1, "%s: tagname", __func__); 5979 if (strlcpy(match_tagname, r->match_tagname, sizeof(match_tagname)) >= 5980 sizeof(match_tagname)) 5981 errx(1, "%s: match_tagname", __func__); 5982 if (strlcpy(qname, r->qname, sizeof(qname)) >= sizeof(qname)) 5983 errx(1, "%s: qname", __func__); 5984 5985 LOOP_THROUGH(struct node_if, interface, interfaces, 5986 LOOP_THROUGH(struct node_etherproto, proto, protos, 5987 LOOP_THROUGH(struct node_mac, src, srcs, 5988 LOOP_THROUGH(struct node_mac, dst, dsts, 5989 LOOP_THROUGH(struct node_host, ipsrc, ipsrcs, 5990 LOOP_THROUGH(struct node_host, ipdst, ipdsts, 5991 strlcpy(r->ifname, interface->ifname, 5992 sizeof(r->ifname)); 5993 r->ifnot = interface->not; 5994 r->proto = proto->proto; 5995 if (!r->proto && ipsrc->af) 5996 r->proto = pf_af_to_proto(ipsrc->af); 5997 else if (!r->proto && ipdst->af) 5998 r->proto = pf_af_to_proto(ipdst->af); 5999 bcopy(src->mac, r->src.addr, ETHER_ADDR_LEN); 6000 bcopy(src->mask, r->src.mask, ETHER_ADDR_LEN); 6001 r->src.neg = src->neg; 6002 r->src.isset = src->isset; 6003 r->ipsrc.addr = ipsrc->addr; 6004 r->ipsrc.neg = ipsrc->not; 6005 r->ipdst.addr = ipdst->addr; 6006 r->ipdst.neg = ipdst->not; 6007 bcopy(dst->mac, r->dst.addr, ETHER_ADDR_LEN); 6008 bcopy(dst->mask, r->dst.mask, ETHER_ADDR_LEN); 6009 r->dst.neg = dst->neg; 6010 r->dst.isset = dst->isset; 6011 r->nr = pf->eastack[pf->asd]->match++; 6012 6013 if (strlcpy(r->tagname, tagname, sizeof(r->tagname)) >= 6014 sizeof(r->tagname)) 6015 errx(1, "%s: r->tagname", __func__); 6016 if (strlcpy(r->match_tagname, match_tagname, 6017 sizeof(r->match_tagname)) >= sizeof(r->match_tagname)) 6018 errx(1, "%s: r->match_tagname", __func__); 6019 if (strlcpy(r->qname, qname, sizeof(r->qname)) >= sizeof(r->qname)) 6020 errx(1, "%s: r->qname", __func__); 6021 6022 if (bridge_to) 6023 strlcpy(r->bridge_to, bridge_to, sizeof(r->bridge_to)); 6024 6025 pfctl_append_eth_rule(pf, r, anchor_call); 6026 )))))); 6027 6028 FREE_LIST(struct node_if, interfaces); 6029 FREE_LIST(struct node_etherproto, protos); 6030 FREE_LIST(struct node_mac, srcs); 6031 FREE_LIST(struct node_mac, dsts); 6032 FREE_LIST(struct node_host, ipsrcs); 6033 FREE_LIST(struct node_host, ipdsts); 6034 } 6035 6036 int 6037 apply_rdr_ports(struct pfctl_rule *r, struct pfctl_pool *rpool, struct redirspec *rs) 6038 { 6039 if (rs == NULL) 6040 return 0; 6041 6042 rpool->proxy_port[0] = ntohs(rs->rport.a); 6043 6044 if (!rs->rport.b && rs->rport.t) { 6045 rpool->proxy_port[1] = ntohs(rs->rport.a) + 6046 (ntohs(r->dst.port[1]) - ntohs(r->dst.port[0])); 6047 } else { 6048 if (validate_range(rs->rport.t, rs->rport.a, 6049 rs->rport.b)) { 6050 yyerror("invalid rdr-to port range"); 6051 return (1); 6052 } 6053 r->rdr.proxy_port[1] = ntohs(rs->rport.b); 6054 } 6055 6056 if (rs->pool_opts.staticport) { 6057 yyerror("the 'static-port' option is only valid with nat rules"); 6058 return 1; 6059 } 6060 6061 if (rs->pool_opts.mape.offset) { 6062 yyerror("the 'map-e-portset' option is only valid with nat rules"); 6063 return 1; 6064 } 6065 6066 return 0; 6067 } 6068 6069 int 6070 apply_nat_ports(struct pfctl_pool *rpool, struct redirspec *rs) 6071 { 6072 if (rs == NULL) 6073 return 0; 6074 6075 rpool->proxy_port[0] = ntohs(rs->rport.a); 6076 rpool->proxy_port[1] = ntohs(rs->rport.b); 6077 if (!rpool->proxy_port[0] && !rpool->proxy_port[1]) { 6078 rpool->proxy_port[0] = PF_NAT_PROXY_PORT_LOW; 6079 rpool->proxy_port[1] = PF_NAT_PROXY_PORT_HIGH; 6080 } else if (!rpool->proxy_port[1]) 6081 rpool->proxy_port[1] = rpool->proxy_port[0]; 6082 6083 if (rs->pool_opts.staticport) { 6084 if (rpool->proxy_port[0] != PF_NAT_PROXY_PORT_LOW && 6085 rpool->proxy_port[1] != PF_NAT_PROXY_PORT_HIGH) { 6086 yyerror("the 'static-port' option can't" 6087 " be used when specifying a port" 6088 " range"); 6089 return 1; 6090 } 6091 rpool->proxy_port[0] = 0; 6092 rpool->proxy_port[1] = 0; 6093 } 6094 6095 if (rs->pool_opts.mape.offset) { 6096 if (rs->pool_opts.staticport) { 6097 yyerror("the 'map-e-portset' option" 6098 " can't be used 'static-port'"); 6099 return 1; 6100 } 6101 if (rpool->proxy_port[0] != PF_NAT_PROXY_PORT_LOW && 6102 rpool->proxy_port[1] != PF_NAT_PROXY_PORT_HIGH) { 6103 yyerror("the 'map-e-portset' option" 6104 " can't be used when specifying" 6105 " a port range"); 6106 return 1; 6107 } 6108 rpool->mape = rs->pool_opts.mape; 6109 } 6110 6111 return 0; 6112 } 6113 6114 int 6115 apply_redirspec(struct pfctl_pool *rpool, struct redirspec *rs) 6116 { 6117 struct node_host *h; 6118 struct pf_pooladdr *pa; 6119 6120 if (rs == NULL) 6121 return 0; 6122 6123 rpool->opts = rs->pool_opts.type; 6124 6125 if ((rpool->opts & PF_POOL_TYPEMASK) == PF_POOL_NONE && 6126 (rs->host->next != NULL || 6127 rs->host->addr.type == PF_ADDR_TABLE || 6128 DYNIF_MULTIADDR(rs->host->addr))) 6129 rpool->opts = PF_POOL_ROUNDROBIN; 6130 6131 if (!PF_POOL_DYNTYPE(rpool->opts) && 6132 (disallow_table(rs->host, "tables are not supported by pool type") || 6133 disallow_alias(rs->host, "interface (%s) is not supported by pool type"))) 6134 return 1; 6135 6136 if (rs->host->next != NULL && 6137 ((rpool->opts & PF_POOL_TYPEMASK) != PF_POOL_ROUNDROBIN)) { 6138 yyerror("r.route.opts must be PF_POOL_ROUNDROBIN"); 6139 return 1; 6140 } 6141 6142 if (rs->host->next != NULL) { 6143 if ((rpool->opts & PF_POOL_TYPEMASK) != 6144 PF_POOL_ROUNDROBIN) { 6145 yyerror("only round-robin valid for multiple " 6146 "redirection addresses"); 6147 return 1; 6148 } 6149 } 6150 6151 rpool->opts |= rs->pool_opts.opts; 6152 6153 if (rs->pool_opts.key != NULL) 6154 memcpy(&(rpool->key), rs->pool_opts.key, 6155 sizeof(struct pf_poolhashkey)); 6156 6157 for (h = rs->host; h != NULL; h = h->next) { 6158 pa = calloc(1, sizeof(struct pf_pooladdr)); 6159 if (pa == NULL) 6160 err(1, "%s: calloc", __func__); 6161 pa->addr = h->addr; 6162 if (h->ifname != NULL) { 6163 if (strlcpy(pa->ifname, h->ifname, 6164 sizeof(pa->ifname)) >= sizeof(pa->ifname)) 6165 errx(1, "%s: strlcpy", __func__); 6166 } else 6167 pa->ifname[0] = 0; 6168 TAILQ_INSERT_TAIL(&(rpool->list), pa, entries); 6169 } 6170 6171 return 0; 6172 } 6173 6174 int 6175 check_binat_redirspec(struct node_host *src_host, struct pfctl_rule *r, int af) 6176 { 6177 struct pf_pooladdr *nat_pool = TAILQ_FIRST(&(r->nat.list)); 6178 int error = 0; 6179 6180 /* XXX: FreeBSD allows syntax like "{ host1 host2 }" for redirection 6181 * pools but does not covert them to tables automatically, because 6182 * syntax "{ (iface1 host1), (iface2 iface2) }" is allowed for route-to 6183 * redirection. Add a FreeBSD-specific guard against using multiple 6184 * hosts for source and redirection. 6185 */ 6186 if (src_host->next) { 6187 yyerror("invalid use of table as the source address " 6188 "of a binat-to rule"); 6189 error++; 6190 } 6191 if (TAILQ_NEXT(nat_pool, entries)) { 6192 yyerror ("tables cannot be used as the redirect " 6193 "address of a binat-to rule"); 6194 error++; 6195 } 6196 6197 if (disallow_table(src_host, "invalid use of table " 6198 "<%s> as the source address of a binat-to rule") || 6199 disallow_alias(src_host, "invalid use of interface " 6200 "(%s) as the source address of a binat-to rule")) { 6201 error++; 6202 } else if ((r->src.addr.type != PF_ADDR_ADDRMASK && 6203 r->src.addr.type != PF_ADDR_DYNIFTL) || 6204 (nat_pool->addr.type != PF_ADDR_ADDRMASK && 6205 nat_pool->addr.type != PF_ADDR_DYNIFTL)) { 6206 yyerror("binat-to requires a specified " 6207 "source and redirect address"); 6208 error++; 6209 } 6210 if (DYNIF_MULTIADDR(r->src.addr) || 6211 DYNIF_MULTIADDR(nat_pool->addr)) { 6212 yyerror ("dynamic interfaces must be " 6213 "used with:0 in a binat-to rule"); 6214 error++; 6215 } 6216 if (PF_AZERO(&r->src.addr.v.a.mask, af) || 6217 PF_AZERO(&(nat_pool->addr.v.a.mask), af)) { 6218 yyerror ("source and redir addresess must have " 6219 "a matching network mask in binat-rule"); 6220 error++; 6221 } 6222 if (nat_pool->addr.type == PF_ADDR_TABLE) { 6223 yyerror ("tables cannot be used as the redirect " 6224 "address of a binat-to rule"); 6225 error++; 6226 } 6227 if (r->direction != PF_INOUT) { 6228 yyerror("binat-to cannot be specified " 6229 "with a direction"); 6230 error++; 6231 } 6232 6233 /* first specify outbound NAT rule */ 6234 r->direction = PF_OUT; 6235 6236 return (error); 6237 } 6238 6239 void 6240 add_binat_rdr_rule( 6241 struct pfctl_rule *binat_rule, 6242 struct redirspec *binat_nat_redirspec, struct node_host *binat_src_host, 6243 struct pfctl_rule *rdr_rule, struct redirspec **rdr_redirspec, 6244 struct node_host **rdr_dst_host) 6245 { 6246 struct node_host *rdr_src_host; 6247 6248 /* 6249 * We're copying the whole rule, but we must re-init redir pools. 6250 * FreeBSD uses lists of pf_pooladdr, we can't just overwrite them. 6251 */ 6252 bcopy(binat_rule, rdr_rule, sizeof(struct pfctl_rule)); 6253 TAILQ_INIT(&(rdr_rule->rdr.list)); 6254 TAILQ_INIT(&(rdr_rule->nat.list)); 6255 6256 /* now specify inbound rdr rule */ 6257 rdr_rule->direction = PF_IN; 6258 6259 if ((rdr_src_host = calloc(1, sizeof(*rdr_src_host))) == NULL) 6260 err(1, "%s", __func__); 6261 bcopy(binat_src_host, rdr_src_host, sizeof(*rdr_src_host)); 6262 rdr_src_host->ifname = NULL; 6263 rdr_src_host->next = NULL; 6264 rdr_src_host->tail = NULL; 6265 6266 if (((*rdr_dst_host) = calloc(1, sizeof(**rdr_dst_host))) == NULL) 6267 err(1, "%s", __func__); 6268 bcopy(&(binat_nat_redirspec->host->addr), &((*rdr_dst_host)->addr), 6269 sizeof((*rdr_dst_host)->addr)); 6270 (*rdr_dst_host)->ifname = NULL; 6271 (*rdr_dst_host)->next = NULL; 6272 (*rdr_dst_host)->tail = NULL; 6273 6274 if (((*rdr_redirspec) = calloc(1, sizeof(**rdr_redirspec))) == NULL) 6275 err(1, "%s", __func__); 6276 bcopy(binat_nat_redirspec, (*rdr_redirspec), sizeof(**rdr_redirspec)); 6277 (*rdr_redirspec)->pool_opts.staticport = 0; 6278 (*rdr_redirspec)->host = rdr_src_host; 6279 } 6280 6281 void 6282 expand_rule(struct pfctl_rule *r, bool keeprule, 6283 struct node_if *interfaces, struct redirspec *nat, 6284 struct redirspec *rdr, struct redirspec *route, 6285 struct node_proto *protos, 6286 struct node_os *src_oses, struct node_host *src_hosts, 6287 struct node_port *src_ports, struct node_host *dst_hosts, 6288 struct node_port *dst_ports, struct node_uid *uids, struct node_gid *gids, 6289 struct node_if *rcv, struct node_icmp *icmp_types, const char *anchor_call) 6290 { 6291 sa_family_t af = r->af; 6292 int added = 0, error = 0; 6293 char ifname[IF_NAMESIZE]; 6294 char label[PF_RULE_MAX_LABEL_COUNT][PF_RULE_LABEL_SIZE]; 6295 char tagname[PF_TAG_NAME_SIZE]; 6296 char match_tagname[PF_TAG_NAME_SIZE]; 6297 struct node_host *osrch, *odsth; 6298 u_int8_t flags, flagset, keep_state; 6299 6300 memcpy(label, r->label, sizeof(r->label)); 6301 assert(sizeof(r->label) == sizeof(label)); 6302 if (strlcpy(tagname, r->tagname, sizeof(tagname)) >= sizeof(tagname)) 6303 errx(1, "%s: strlcpy", __func__); 6304 if (strlcpy(match_tagname, r->match_tagname, sizeof(match_tagname)) >= 6305 sizeof(match_tagname)) 6306 errx(1, "%s: strlcpy", __func__); 6307 flags = r->flags; 6308 flagset = r->flagset; 6309 keep_state = r->keep_state; 6310 6311 LOOP_THROUGH(struct node_if, interface, interfaces, 6312 LOOP_THROUGH(struct node_proto, proto, protos, 6313 LOOP_THROUGH(struct node_icmp, icmp_type, icmp_types, 6314 LOOP_THROUGH(struct node_host, src_host, src_hosts, 6315 LOOP_THROUGH(struct node_host, dst_host, dst_hosts, 6316 LOOP_THROUGH(struct node_port, src_port, src_ports, 6317 LOOP_THROUGH(struct node_port, dst_port, dst_ports, 6318 LOOP_THROUGH(struct node_os, src_os, src_oses, 6319 LOOP_THROUGH(struct node_uid, uid, uids, 6320 LOOP_THROUGH(struct node_gid, gid, gids, 6321 6322 r->af = af; 6323 6324 if (r->rule_flag & PFRULE_AFTO) { 6325 assert(nat != NULL); 6326 r->naf = nat->af; 6327 } 6328 6329 /* for link-local IPv6 address, interface must match up */ 6330 if ((r->af && src_host->af && r->af != src_host->af) || 6331 (r->af && dst_host->af && r->af != dst_host->af) || 6332 (src_host->af && dst_host->af && 6333 src_host->af != dst_host->af) || 6334 (src_host->ifindex && dst_host->ifindex && 6335 src_host->ifindex != dst_host->ifindex) || 6336 (src_host->ifindex && *interface->ifname && 6337 src_host->ifindex != ifa_nametoindex(interface->ifname)) || 6338 (dst_host->ifindex && *interface->ifname && 6339 dst_host->ifindex != ifa_nametoindex(interface->ifname))) 6340 continue; 6341 if (!r->af && src_host->af) 6342 r->af = src_host->af; 6343 else if (!r->af && dst_host->af) 6344 r->af = dst_host->af; 6345 6346 if (*interface->ifname) 6347 strlcpy(r->ifname, interface->ifname, 6348 sizeof(r->ifname)); 6349 else if (ifa_indextoname(src_host->ifindex, ifname)) 6350 strlcpy(r->ifname, ifname, sizeof(r->ifname)); 6351 else if (ifa_indextoname(dst_host->ifindex, ifname)) 6352 strlcpy(r->ifname, ifname, sizeof(r->ifname)); 6353 else 6354 memset(r->ifname, '\0', sizeof(r->ifname)); 6355 6356 memcpy(r->label, label, sizeof(r->label)); 6357 if (strlcpy(r->tagname, tagname, sizeof(r->tagname)) >= 6358 sizeof(r->tagname)) 6359 errx(1, "%s: strlcpy", __func__); 6360 if (strlcpy(r->match_tagname, match_tagname, 6361 sizeof(r->match_tagname)) >= sizeof(r->match_tagname)) 6362 errx(1, "%s: strlcpy", __func__); 6363 6364 osrch = odsth = NULL; 6365 if (src_host->addr.type == PF_ADDR_DYNIFTL) { 6366 osrch = src_host; 6367 if ((src_host = gen_dynnode(src_host, r->af)) == NULL) 6368 err(1, "%s: calloc", __func__); 6369 } 6370 if (dst_host->addr.type == PF_ADDR_DYNIFTL) { 6371 odsth = dst_host; 6372 if ((dst_host = gen_dynnode(dst_host, r->af)) == NULL) 6373 err(1, "%s: calloc", __func__); 6374 } 6375 6376 error += check_netmask(src_host, r->af); 6377 error += check_netmask(dst_host, r->af); 6378 6379 r->ifnot = interface->not; 6380 r->proto = proto->proto; 6381 r->src.addr = src_host->addr; 6382 r->src.neg = src_host->not; 6383 r->src.port[0] = src_port->port[0]; 6384 r->src.port[1] = src_port->port[1]; 6385 r->src.port_op = src_port->op; 6386 r->dst.addr = dst_host->addr; 6387 r->dst.neg = dst_host->not; 6388 r->dst.port[0] = dst_port->port[0]; 6389 r->dst.port[1] = dst_port->port[1]; 6390 r->dst.port_op = dst_port->op; 6391 r->uid.op = uid->op; 6392 r->uid.uid[0] = uid->uid[0]; 6393 r->uid.uid[1] = uid->uid[1]; 6394 r->gid.op = gid->op; 6395 r->gid.gid[0] = gid->gid[0]; 6396 r->gid.gid[1] = gid->gid[1]; 6397 if (rcv) { 6398 strlcpy(r->rcv_ifname, rcv->ifname, 6399 sizeof(r->rcv_ifname)); 6400 r->rcvifnot = rcv->not; 6401 } 6402 r->type = icmp_type->type; 6403 r->code = icmp_type->code; 6404 6405 if ((keep_state == PF_STATE_MODULATE || 6406 keep_state == PF_STATE_SYNPROXY) && 6407 r->proto && r->proto != IPPROTO_TCP) 6408 r->keep_state = PF_STATE_NORMAL; 6409 else 6410 r->keep_state = keep_state; 6411 6412 if (r->proto && r->proto != IPPROTO_TCP) { 6413 r->flags = 0; 6414 r->flagset = 0; 6415 } else { 6416 r->flags = flags; 6417 r->flagset = flagset; 6418 } 6419 if (icmp_type->proto && r->proto != icmp_type->proto) { 6420 yyerror("icmp-type mismatch"); 6421 error++; 6422 } 6423 6424 if (src_os && src_os->os) { 6425 r->os_fingerprint = pfctl_get_fingerprint(src_os->os); 6426 if ((pf->opts & PF_OPT_VERBOSE2) && 6427 r->os_fingerprint == PF_OSFP_NOMATCH) 6428 fprintf(stderr, 6429 "warning: unknown '%s' OS fingerprint\n", 6430 src_os->os); 6431 } else { 6432 r->os_fingerprint = PF_OSFP_ANY; 6433 } 6434 6435 if (r->action == PF_RDR) { 6436 /* Pre-FreeBSD 15 "rdr" rule */ 6437 error += apply_rdr_ports(r, &(r->rdr), rdr); 6438 error += apply_redirspec(&(r->rdr), rdr); 6439 } else if (r->action == PF_NAT) { 6440 /* Pre-FreeBSD 15 "nat" rule */ 6441 error += apply_nat_ports(&(r->rdr), rdr); 6442 error += apply_redirspec(&(r->rdr), rdr); 6443 } else { 6444 /* Modern rule with optional NAT, BINAT, RDR or ROUTE*/ 6445 error += apply_redirspec(&(r->route), route); 6446 6447 error += apply_nat_ports(&(r->nat), nat); 6448 error += apply_redirspec(&(r->nat), nat); 6449 error += apply_rdr_ports(r, &(r->rdr), rdr); 6450 error += apply_redirspec(&(r->rdr), rdr); 6451 6452 if (nat && nat->binat) 6453 error += check_binat_redirspec(src_host, r, af); 6454 } 6455 6456 if (rule_consistent(r, anchor_call[0]) < 0 || error) 6457 yyerror("skipping rule due to errors"); 6458 else { 6459 r->nr = pf->astack[pf->asd]->match++; 6460 pfctl_append_rule(pf, r, anchor_call); 6461 added++; 6462 } 6463 6464 /* Generate binat's matching inbound rule */ 6465 if (!error && nat && nat->binat) { 6466 struct pfctl_rule rdr_rule; 6467 struct redirspec *rdr_redirspec; 6468 struct node_host *rdr_dst_host; 6469 6470 add_binat_rdr_rule( 6471 r, nat, src_hosts, 6472 &rdr_rule, &rdr_redirspec, &rdr_dst_host); 6473 6474 expand_rule(&rdr_rule, true, interface, NULL, rdr_redirspec, 6475 NULL, proto, src_os, dst_host, dst_port, 6476 rdr_dst_host, src_port, uid, gid, rcv, icmp_type, 6477 ""); 6478 } 6479 6480 if (osrch && src_host->addr.type == PF_ADDR_DYNIFTL) { 6481 free(src_host); 6482 src_host = osrch; 6483 } 6484 if (odsth && dst_host->addr.type == PF_ADDR_DYNIFTL) { 6485 free(dst_host); 6486 dst_host = odsth; 6487 } 6488 6489 )))))))))); 6490 6491 if (!keeprule) { 6492 FREE_LIST(struct node_if, interfaces); 6493 FREE_LIST(struct node_proto, protos); 6494 FREE_LIST(struct node_host, src_hosts); 6495 FREE_LIST(struct node_port, src_ports); 6496 FREE_LIST(struct node_os, src_oses); 6497 FREE_LIST(struct node_host, dst_hosts); 6498 FREE_LIST(struct node_port, dst_ports); 6499 FREE_LIST(struct node_uid, uids); 6500 FREE_LIST(struct node_gid, gids); 6501 FREE_LIST(struct node_icmp, icmp_types); 6502 if (nat) { 6503 FREE_LIST(struct node_host, nat->host); 6504 free(nat); 6505 } 6506 if (rdr) { 6507 FREE_LIST(struct node_host, rdr->host); 6508 free(rdr); 6509 } 6510 if (route) { 6511 FREE_LIST(struct node_host, route->host); 6512 free(route); 6513 } 6514 } 6515 6516 if (!added) 6517 yyerror("rule expands to no valid combination"); 6518 } 6519 6520 int 6521 expand_skip_interface(struct node_if *interfaces) 6522 { 6523 int errs = 0; 6524 6525 if (!interfaces || (!interfaces->next && !interfaces->not && 6526 !strcmp(interfaces->ifname, "none"))) { 6527 if (pf->opts & PF_OPT_VERBOSE) 6528 printf("set skip on none\n"); 6529 errs = pfctl_set_interface_flags(pf, "", PFI_IFLAG_SKIP, 0); 6530 return (errs); 6531 } 6532 6533 if (pf->opts & PF_OPT_VERBOSE) 6534 printf("set skip on {"); 6535 LOOP_THROUGH(struct node_if, interface, interfaces, 6536 if (pf->opts & PF_OPT_VERBOSE) 6537 printf(" %s", interface->ifname); 6538 if (interface->not) { 6539 yyerror("skip on ! <interface> is not supported"); 6540 errs++; 6541 } else 6542 errs += pfctl_set_interface_flags(pf, 6543 interface->ifname, PFI_IFLAG_SKIP, 1); 6544 ); 6545 if (pf->opts & PF_OPT_VERBOSE) 6546 printf(" }\n"); 6547 6548 FREE_LIST(struct node_if, interfaces); 6549 6550 if (errs) 6551 return (1); 6552 else 6553 return (0); 6554 } 6555 6556 void 6557 freehostlist(struct node_host *h) 6558 { 6559 FREE_LIST(struct node_host, h); 6560 } 6561 6562 #undef FREE_LIST 6563 #undef LOOP_THROUGH 6564 6565 int 6566 check_rulestate(int desired_state) 6567 { 6568 if (require_order && (rulestate > desired_state)) { 6569 yyerror("Rules must be in order: options, ethernet, " 6570 "normalization, queueing, translation, filtering"); 6571 return (1); 6572 } 6573 rulestate = desired_state; 6574 return (0); 6575 } 6576 6577 int 6578 kw_cmp(const void *k, const void *e) 6579 { 6580 return (strcmp(k, ((const struct keywords *)e)->k_name)); 6581 } 6582 6583 int 6584 lookup(char *s) 6585 { 6586 /* this has to be sorted always */ 6587 static const struct keywords keywords[] = { 6588 { "af-to", AFTO}, 6589 { "all", ALL}, 6590 { "allow-opts", ALLOWOPTS}, 6591 { "allow-related", ALLOW_RELATED}, 6592 { "altq", ALTQ}, 6593 { "anchor", ANCHOR}, 6594 { "antispoof", ANTISPOOF}, 6595 { "any", ANY}, 6596 { "bandwidth", BANDWIDTH}, 6597 { "binat", BINAT}, 6598 { "binat-anchor", BINATANCHOR}, 6599 { "binat-to", BINATTO}, 6600 { "bitmask", BITMASK}, 6601 { "block", BLOCK}, 6602 { "block-policy", BLOCKPOLICY}, 6603 { "bridge-to", BRIDGE_TO}, 6604 { "buckets", BUCKETS}, 6605 { "cbq", CBQ}, 6606 { "code", CODE}, 6607 { "codelq", CODEL}, 6608 { "debug", DEBUG}, 6609 { "divert-reply", DIVERTREPLY}, 6610 { "divert-to", DIVERTTO}, 6611 { "dnpipe", DNPIPE}, 6612 { "dnqueue", DNQUEUE}, 6613 { "drop", DROP}, 6614 { "dup-to", DUPTO}, 6615 { "endpoint-independent", ENDPI}, 6616 { "ether", ETHER}, 6617 { "fail-policy", FAILPOLICY}, 6618 { "fairq", FAIRQ}, 6619 { "fastroute", FASTROUTE}, 6620 { "file", FILENAME}, 6621 { "fingerprints", FINGERPRINTS}, 6622 { "flags", FLAGS}, 6623 { "floating", FLOATING}, 6624 { "flush", FLUSH}, 6625 { "for", FOR}, 6626 { "fragment", FRAGMENT}, 6627 { "from", FROM}, 6628 { "global", GLOBAL}, 6629 { "group", GROUP}, 6630 { "hfsc", HFSC}, 6631 { "hogs", HOGS}, 6632 { "hostid", HOSTID}, 6633 { "icmp-type", ICMPTYPE}, 6634 { "icmp6-type", ICMP6TYPE}, 6635 { "if-bound", IFBOUND}, 6636 { "in", IN}, 6637 { "include", INCLUDE}, 6638 { "inet", INET}, 6639 { "inet6", INET6}, 6640 { "interval", INTERVAL}, 6641 { "keep", KEEP}, 6642 { "keepcounters", KEEPCOUNTERS}, 6643 { "l3", L3}, 6644 { "label", LABEL}, 6645 { "limit", LIMIT}, 6646 { "linkshare", LINKSHARE}, 6647 { "load", LOAD}, 6648 { "log", LOG}, 6649 { "loginterface", LOGINTERFACE}, 6650 { "map-e-portset", MAPEPORTSET}, 6651 { "match", MATCH}, 6652 { "matches", MATCHES}, 6653 { "max", MAXIMUM}, 6654 { "max-mss", MAXMSS}, 6655 { "max-pkt-rate", MAXPKTRATE}, 6656 { "max-pkt-size", MAXPKTSIZE}, 6657 { "max-src-conn", MAXSRCCONN}, 6658 { "max-src-conn-rate", MAXSRCCONNRATE}, 6659 { "max-src-nodes", MAXSRCNODES}, 6660 { "max-src-states", MAXSRCSTATES}, 6661 { "min-ttl", MINTTL}, 6662 { "modulate", MODULATE}, 6663 { "nat", NAT}, 6664 { "nat-anchor", NATANCHOR}, 6665 { "nat-to", NATTO}, 6666 { "no", NO}, 6667 { "no-df", NODF}, 6668 { "no-route", NOROUTE}, 6669 { "no-sync", NOSYNC}, 6670 { "on", ON}, 6671 { "optimization", OPTIMIZATION}, 6672 { "os", OS}, 6673 { "out", OUT}, 6674 { "overload", OVERLOAD}, 6675 { "pass", PASS}, 6676 { "pflow", PFLOW}, 6677 { "port", PORT}, 6678 { "prio", PRIO}, 6679 { "priority", PRIORITY}, 6680 { "priq", PRIQ}, 6681 { "probability", PROBABILITY}, 6682 { "proto", PROTO}, 6683 { "qlimit", QLIMIT}, 6684 { "queue", QUEUE}, 6685 { "quick", QUICK}, 6686 { "random", RANDOM}, 6687 { "random-id", RANDOMID}, 6688 { "rdr", RDR}, 6689 { "rdr-anchor", RDRANCHOR}, 6690 { "rdr-to", RDRTO}, 6691 { "realtime", REALTIME}, 6692 { "reassemble", REASSEMBLE}, 6693 { "received-on", RECEIVEDON}, 6694 { "reply-to", REPLYTO}, 6695 { "require-order", REQUIREORDER}, 6696 { "return", RETURN}, 6697 { "return-icmp", RETURNICMP}, 6698 { "return-icmp6", RETURNICMP6}, 6699 { "return-rst", RETURNRST}, 6700 { "ridentifier", RIDENTIFIER}, 6701 { "round-robin", ROUNDROBIN}, 6702 { "route", ROUTE}, 6703 { "route-to", ROUTETO}, 6704 { "rtable", RTABLE}, 6705 { "rule", RULE}, 6706 { "ruleset-optimization", RULESET_OPTIMIZATION}, 6707 { "scrub", SCRUB}, 6708 { "set", SET}, 6709 { "set-tos", SETTOS}, 6710 { "skip", SKIP}, 6711 { "sloppy", SLOPPY}, 6712 { "source-hash", SOURCEHASH}, 6713 { "source-track", SOURCETRACK}, 6714 { "state", STATE}, 6715 { "state-defaults", STATEDEFAULTS}, 6716 { "state-policy", STATEPOLICY}, 6717 { "static-port", STATICPORT}, 6718 { "sticky-address", STICKYADDRESS}, 6719 { "syncookies", SYNCOOKIES}, 6720 { "synproxy", SYNPROXY}, 6721 { "table", TABLE}, 6722 { "tag", TAG}, 6723 { "tagged", TAGGED}, 6724 { "target", TARGET}, 6725 { "tbrsize", TBRSIZE}, 6726 { "timeout", TIMEOUT}, 6727 { "to", TO}, 6728 { "tos", TOS}, 6729 { "ttl", TTL}, 6730 { "upperlimit", UPPERLIMIT}, 6731 { "urpf-failed", URPFFAILED}, 6732 { "user", USER}, 6733 }; 6734 const struct keywords *p; 6735 6736 p = bsearch(s, keywords, sizeof(keywords)/sizeof(keywords[0]), 6737 sizeof(keywords[0]), kw_cmp); 6738 6739 if (p) { 6740 if (debug > 1) 6741 fprintf(stderr, "%s: %d\n", s, p->k_val); 6742 return (p->k_val); 6743 } else { 6744 if (debug > 1) 6745 fprintf(stderr, "string: %s\n", s); 6746 return (STRING); 6747 } 6748 } 6749 6750 #define START_EXPAND 1 6751 #define DONE_EXPAND 2 6752 6753 static int expanding; 6754 6755 int 6756 igetc(void) 6757 { 6758 int c; 6759 while (1) { 6760 if (file->ungetpos > 0) 6761 c = file->ungetbuf[--file->ungetpos]; 6762 else 6763 c = getc(file->stream); 6764 if (c == START_EXPAND) 6765 expanding = 1; 6766 else if (c == DONE_EXPAND) 6767 expanding = 0; 6768 else 6769 break; 6770 } 6771 return (c); 6772 } 6773 6774 int 6775 lgetc(int quotec) 6776 { 6777 int c, next; 6778 6779 if (quotec) { 6780 if ((c = igetc()) == EOF) { 6781 yyerror("reached end of file while parsing quoted string"); 6782 if (file == topfile || popfile() == EOF) 6783 return (EOF); 6784 return (quotec); 6785 } 6786 return (c); 6787 } 6788 6789 while ((c = igetc()) == '\\') { 6790 next = igetc(); 6791 if (next != '\n') { 6792 c = next; 6793 break; 6794 } 6795 yylval.lineno = file->lineno; 6796 file->lineno++; 6797 } 6798 6799 if (c == EOF) { 6800 /* 6801 * Fake EOL when hit EOF for the first time. This gets line 6802 * count right if last line in included file is syntactically 6803 * invalid and has no newline. 6804 */ 6805 if (file->eof_reached == 0) { 6806 file->eof_reached = 1; 6807 return ('\n'); 6808 } 6809 while (c == EOF) { 6810 if (file == topfile || popfile() == EOF) 6811 return (EOF); 6812 c = igetc(); 6813 } 6814 } 6815 return (c); 6816 } 6817 6818 void 6819 lungetc(int c) 6820 { 6821 if (c == EOF) 6822 return; 6823 if (file->ungetpos >= file->ungetsize) { 6824 void *p = reallocarray(file->ungetbuf, file->ungetsize, 2); 6825 if (p == NULL) 6826 err(1, "%s", __func__); 6827 file->ungetbuf = p; 6828 file->ungetsize *= 2; 6829 } 6830 file->ungetbuf[file->ungetpos++] = c; 6831 } 6832 6833 int 6834 findeol(void) 6835 { 6836 int c; 6837 6838 /* skip to either EOF or the first real EOL */ 6839 while (1) { 6840 c = lgetc(0); 6841 if (c == '\n') { 6842 file->lineno++; 6843 break; 6844 } 6845 if (c == EOF) 6846 break; 6847 } 6848 return (ERROR); 6849 } 6850 6851 int 6852 yylex(void) 6853 { 6854 char buf[8096]; 6855 char *p, *val; 6856 int quotec, next, c; 6857 int token; 6858 6859 top: 6860 p = buf; 6861 while ((c = lgetc(0)) == ' ' || c == '\t') 6862 ; /* nothing */ 6863 6864 yylval.lineno = file->lineno; 6865 if (c == '#') 6866 while ((c = lgetc(0)) != '\n' && c != EOF) 6867 ; /* nothing */ 6868 if (c == '$' && !expanding) { 6869 while (1) { 6870 if ((c = lgetc(0)) == EOF) 6871 return (0); 6872 6873 if (p + 1 >= buf + sizeof(buf) - 1) { 6874 yyerror("string too long"); 6875 return (findeol()); 6876 } 6877 if (isalnum(c) || c == '_') { 6878 *p++ = (char)c; 6879 continue; 6880 } 6881 *p = '\0'; 6882 lungetc(c); 6883 break; 6884 } 6885 val = symget(buf); 6886 if (val == NULL) { 6887 yyerror("macro '%s' not defined", buf); 6888 return (findeol()); 6889 } 6890 p = val + strlen(val) - 1; 6891 lungetc(DONE_EXPAND); 6892 while (p >= val) { 6893 lungetc(*p); 6894 p--; 6895 } 6896 lungetc(START_EXPAND); 6897 goto top; 6898 } 6899 6900 switch (c) { 6901 case '\'': 6902 case '"': 6903 quotec = c; 6904 while (1) { 6905 if ((c = lgetc(quotec)) == EOF) 6906 return (0); 6907 if (c == '\n') { 6908 file->lineno++; 6909 continue; 6910 } else if (c == '\\') { 6911 if ((next = lgetc(quotec)) == EOF) 6912 return (0); 6913 if (next == quotec || next == ' ' || 6914 next == '\t') 6915 c = next; 6916 else if (next == '\n') { 6917 file->lineno++; 6918 continue; 6919 } 6920 else 6921 lungetc(next); 6922 } else if (c == quotec) { 6923 *p = '\0'; 6924 break; 6925 } else if (c == '\0') { 6926 yyerror("syntax error"); 6927 return (findeol()); 6928 } 6929 if (p + 1 >= buf + sizeof(buf) - 1) { 6930 yyerror("string too long"); 6931 return (findeol()); 6932 } 6933 *p++ = (char)c; 6934 } 6935 yylval.v.string = strdup(buf); 6936 if (yylval.v.string == NULL) 6937 err(1, "%s: strdup", __func__); 6938 return (STRING); 6939 case '!': 6940 next = lgetc(0); 6941 if (next == '=') 6942 return (NE); 6943 lungetc(next); 6944 break; 6945 case '<': 6946 next = lgetc(0); 6947 if (next == '>') { 6948 yylval.v.i = PF_OP_XRG; 6949 return (PORTBINARY); 6950 } else if (next == '=') 6951 return (LE); 6952 lungetc(next); 6953 break; 6954 case '>': 6955 next = lgetc(0); 6956 if (next == '<') { 6957 yylval.v.i = PF_OP_IRG; 6958 return (PORTBINARY); 6959 } else if (next == '=') 6960 return (GE); 6961 lungetc(next); 6962 break; 6963 case '-': 6964 next = lgetc(0); 6965 if (next == '>') 6966 return (ARROW); 6967 lungetc(next); 6968 break; 6969 } 6970 6971 #define allowed_to_end_number(x) \ 6972 (isspace(x) || x == ')' || x ==',' || x == '/' || x == '}' || x == '=') 6973 6974 if (c == '-' || isdigit(c)) { 6975 do { 6976 *p++ = c; 6977 if ((size_t)(p-buf) >= sizeof(buf)) { 6978 yyerror("string too long"); 6979 return (findeol()); 6980 } 6981 } while ((c = lgetc(0)) != EOF && isdigit(c)); 6982 lungetc(c); 6983 if (p == buf + 1 && buf[0] == '-') 6984 goto nodigits; 6985 if (c == EOF || allowed_to_end_number(c)) { 6986 const char *errstr = NULL; 6987 6988 *p = '\0'; 6989 yylval.v.number = strtonum(buf, LLONG_MIN, 6990 LLONG_MAX, &errstr); 6991 if (errstr) { 6992 yyerror("\"%s\" invalid number: %s", 6993 buf, errstr); 6994 return (findeol()); 6995 } 6996 return (NUMBER); 6997 } else { 6998 nodigits: 6999 while (p > buf + 1) 7000 lungetc(*--p); 7001 c = *--p; 7002 if (c == '-') 7003 return (c); 7004 } 7005 } 7006 7007 #define allowed_in_string(x) \ 7008 (isalnum(x) || (ispunct(x) && x != '(' && x != ')' && \ 7009 x != '{' && x != '}' && x != '<' && x != '>' && \ 7010 x != '!' && x != '=' && x != '/' && x != '#' && \ 7011 x != ',')) 7012 7013 if (isalnum(c) || c == ':' || c == '_') { 7014 do { 7015 *p++ = c; 7016 if ((size_t)(p-buf) >= sizeof(buf)) { 7017 yyerror("string too long"); 7018 return (findeol()); 7019 } 7020 } while ((c = lgetc(0)) != EOF && (allowed_in_string(c))); 7021 lungetc(c); 7022 *p = '\0'; 7023 if ((token = lookup(buf)) == STRING) 7024 if ((yylval.v.string = strdup(buf)) == NULL) 7025 err(1, "%s: strdup", __func__); 7026 return (token); 7027 } 7028 if (c == '\n') { 7029 yylval.lineno = file->lineno; 7030 file->lineno++; 7031 } 7032 if (c == EOF) 7033 return (0); 7034 return (c); 7035 } 7036 7037 int 7038 check_file_secrecy(int fd, const char *fname) 7039 { 7040 struct stat st; 7041 7042 if (fstat(fd, &st)) { 7043 warn("cannot stat %s", fname); 7044 return (-1); 7045 } 7046 if (st.st_uid != 0 && st.st_uid != getuid()) { 7047 warnx("%s: owner not root or current user", fname); 7048 return (-1); 7049 } 7050 if (st.st_mode & (S_IWGRP | S_IXGRP | S_IRWXO)) { 7051 warnx("%s: group writable or world read/writable", fname); 7052 return (-1); 7053 } 7054 return (0); 7055 } 7056 7057 struct file * 7058 pushfile(const char *name, int secret) 7059 { 7060 struct file *nfile; 7061 7062 if ((nfile = calloc(1, sizeof(struct file))) == NULL || 7063 (nfile->name = strdup(name)) == NULL) { 7064 warn("%s", __func__); 7065 if (nfile) 7066 free(nfile); 7067 return (NULL); 7068 } 7069 if (TAILQ_FIRST(&files) == NULL && strcmp(nfile->name, "-") == 0) { 7070 nfile->stream = stdin; 7071 free(nfile->name); 7072 if ((nfile->name = strdup("stdin")) == NULL) { 7073 warn("%s", __func__); 7074 free(nfile); 7075 return (NULL); 7076 } 7077 } else if ((nfile->stream = fopen(nfile->name, "r")) == NULL) { 7078 warn("%s: %s", __func__, nfile->name); 7079 free(nfile->name); 7080 free(nfile); 7081 return (NULL); 7082 } else if (secret && 7083 check_file_secrecy(fileno(nfile->stream), nfile->name)) { 7084 fclose(nfile->stream); 7085 free(nfile->name); 7086 free(nfile); 7087 return (NULL); 7088 } 7089 nfile->lineno = TAILQ_EMPTY(&files) ? 1 : 0; 7090 nfile->ungetsize = 16; 7091 nfile->ungetbuf = malloc(nfile->ungetsize); 7092 if (nfile->ungetbuf == NULL) { 7093 warn("%s", __func__); 7094 fclose(nfile->stream); 7095 free(nfile->name); 7096 free(nfile); 7097 return (NULL); 7098 } 7099 TAILQ_INSERT_TAIL(&files, nfile, entry); 7100 return (nfile); 7101 } 7102 7103 int 7104 popfile(void) 7105 { 7106 struct file *prev; 7107 7108 if ((prev = TAILQ_PREV(file, files, entry)) != NULL) 7109 prev->errors += file->errors; 7110 7111 TAILQ_REMOVE(&files, file, entry); 7112 fclose(file->stream); 7113 free(file->name); 7114 free(file->ungetbuf); 7115 free(file); 7116 file = prev; 7117 7118 return (file ? 0 : EOF); 7119 } 7120 7121 int 7122 parse_config(char *filename, struct pfctl *xpf) 7123 { 7124 int errors = 0; 7125 struct sym *sym; 7126 7127 pf = xpf; 7128 errors = 0; 7129 rulestate = PFCTL_STATE_NONE; 7130 returnicmpdefault = (ICMP_UNREACH << 8) | ICMP_UNREACH_PORT; 7131 returnicmp6default = 7132 (ICMP6_DST_UNREACH << 8) | ICMP6_DST_UNREACH_NOPORT; 7133 blockpolicy = PFRULE_DROP; 7134 failpolicy = PFRULE_DROP; 7135 require_order = 1; 7136 7137 if ((file = pushfile(filename, 0)) == NULL) { 7138 warn("cannot open the main config file!"); 7139 return (-1); 7140 } 7141 topfile = file; 7142 7143 yyparse(); 7144 errors = file->errors; 7145 popfile(); 7146 7147 /* Free macros and check which have not been used. */ 7148 while ((sym = TAILQ_FIRST(&symhead))) { 7149 if ((pf->opts & PF_OPT_VERBOSE2) && !sym->used) 7150 fprintf(stderr, "warning: macro '%s' not " 7151 "used\n", sym->nam); 7152 free(sym->nam); 7153 free(sym->val); 7154 TAILQ_REMOVE(&symhead, sym, entry); 7155 free(sym); 7156 } 7157 7158 return (errors ? -1 : 0); 7159 } 7160 7161 int 7162 symset(const char *nam, const char *val, int persist) 7163 { 7164 struct sym *sym; 7165 7166 TAILQ_FOREACH(sym, &symhead, entry) { 7167 if (strcmp(nam, sym->nam) == 0) 7168 break; 7169 } 7170 7171 if (sym != NULL) { 7172 if (sym->persist == 1) 7173 return (0); 7174 else { 7175 free(sym->nam); 7176 free(sym->val); 7177 TAILQ_REMOVE(&symhead, sym, entry); 7178 free(sym); 7179 } 7180 } 7181 if ((sym = calloc(1, sizeof(*sym))) == NULL) 7182 return (-1); 7183 7184 sym->nam = strdup(nam); 7185 if (sym->nam == NULL) { 7186 free(sym); 7187 return (-1); 7188 } 7189 sym->val = strdup(val); 7190 if (sym->val == NULL) { 7191 free(sym->nam); 7192 free(sym); 7193 return (-1); 7194 } 7195 sym->used = 0; 7196 sym->persist = persist; 7197 TAILQ_INSERT_TAIL(&symhead, sym, entry); 7198 return (0); 7199 } 7200 7201 int 7202 pfctl_cmdline_symset(char *s) 7203 { 7204 char *sym, *val; 7205 int ret; 7206 7207 if ((val = strrchr(s, '=')) == NULL) 7208 return (-1); 7209 7210 sym = strndup(s, val - s); 7211 if (sym == NULL) 7212 err(1, "%s: malloc", __func__); 7213 7214 ret = symset(sym, val + 1, 1); 7215 free(sym); 7216 7217 return (ret); 7218 } 7219 7220 char * 7221 symget(const char *nam) 7222 { 7223 struct sym *sym; 7224 7225 TAILQ_FOREACH(sym, &symhead, entry) { 7226 if (strcmp(nam, sym->nam) == 0) { 7227 sym->used = 1; 7228 return (sym->val); 7229 } 7230 } 7231 return (NULL); 7232 } 7233 7234 void 7235 mv_rules(struct pfctl_ruleset *src, struct pfctl_ruleset *dst) 7236 { 7237 int i; 7238 struct pfctl_rule *r; 7239 7240 for (i = 0; i < PF_RULESET_MAX; ++i) { 7241 TAILQ_FOREACH(r, src->rules[i].active.ptr, entries) 7242 dst->anchor->match++; 7243 TAILQ_CONCAT(dst->rules[i].active.ptr, src->rules[i].active.ptr, entries); 7244 src->anchor->match = 0; 7245 TAILQ_CONCAT(dst->rules[i].inactive.ptr, src->rules[i].inactive.ptr, entries); 7246 } 7247 } 7248 7249 void 7250 mv_eth_rules(struct pfctl_eth_ruleset *src, struct pfctl_eth_ruleset *dst) 7251 { 7252 struct pfctl_eth_rule *r; 7253 7254 while ((r = TAILQ_FIRST(&src->rules)) != NULL) { 7255 TAILQ_REMOVE(&src->rules, r, entries); 7256 TAILQ_INSERT_TAIL(&dst->rules, r, entries); 7257 dst->anchor->match++; 7258 } 7259 src->anchor->match = 0; 7260 } 7261 7262 void 7263 decide_address_family(struct node_host *n, sa_family_t *af) 7264 { 7265 if (*af != 0 || n == NULL) 7266 return; 7267 *af = n->af; 7268 while ((n = n->next) != NULL) { 7269 if (n->af != *af) { 7270 *af = 0; 7271 return; 7272 } 7273 } 7274 } 7275 7276 void 7277 remove_invalid_hosts(struct node_host **nh, sa_family_t *af) 7278 { 7279 struct node_host *n = *nh, *prev = NULL; 7280 7281 while (n != NULL) { 7282 if (*af && n->af && n->af != *af) { 7283 /* unlink and free n */ 7284 struct node_host *next = n->next; 7285 7286 /* adjust tail pointer */ 7287 if (n == (*nh)->tail) 7288 (*nh)->tail = prev; 7289 /* adjust previous node's next pointer */ 7290 if (prev == NULL) 7291 *nh = next; 7292 else 7293 prev->next = next; 7294 /* free node */ 7295 if (n->ifname != NULL) 7296 free(n->ifname); 7297 free(n); 7298 n = next; 7299 } else { 7300 if (n->af && !*af) 7301 *af = n->af; 7302 prev = n; 7303 n = n->next; 7304 } 7305 } 7306 } 7307 7308 int 7309 invalid_redirect(struct node_host *nh, sa_family_t af) 7310 { 7311 if (!af) { 7312 struct node_host *n; 7313 7314 /* tables and dyniftl are ok without an address family */ 7315 for (n = nh; n != NULL; n = n->next) { 7316 if (n->addr.type != PF_ADDR_TABLE && 7317 n->addr.type != PF_ADDR_DYNIFTL) { 7318 yyerror("address family not given and " 7319 "translation address expands to multiple " 7320 "address families"); 7321 return (1); 7322 } 7323 } 7324 } 7325 if (nh == NULL) { 7326 yyerror("no translation address with matching address family " 7327 "found."); 7328 return (1); 7329 } 7330 return (0); 7331 } 7332 7333 int 7334 atoul(char *s, u_long *ulvalp) 7335 { 7336 u_long ulval; 7337 char *ep; 7338 7339 errno = 0; 7340 ulval = strtoul(s, &ep, 0); 7341 if (s[0] == '\0' || *ep != '\0') 7342 return (-1); 7343 if (errno == ERANGE && ulval == ULONG_MAX) 7344 return (-1); 7345 *ulvalp = ulval; 7346 return (0); 7347 } 7348 7349 int 7350 getservice(char *n) 7351 { 7352 struct servent *s; 7353 u_long ulval; 7354 7355 if (atoul(n, &ulval) == 0) { 7356 if (ulval > 65535) { 7357 yyerror("illegal port value %lu", ulval); 7358 return (-1); 7359 } 7360 return (htons(ulval)); 7361 } else { 7362 s = getservbyname(n, "tcp"); 7363 if (s == NULL) 7364 s = getservbyname(n, "udp"); 7365 if (s == NULL) 7366 s = getservbyname(n, "sctp"); 7367 if (s == NULL) { 7368 yyerror("unknown port %s", n); 7369 return (-1); 7370 } 7371 return (s->s_port); 7372 } 7373 } 7374 7375 int 7376 rule_label(struct pfctl_rule *r, char *s[PF_RULE_MAX_LABEL_COUNT]) 7377 { 7378 for (int i = 0; i < PF_RULE_MAX_LABEL_COUNT; i++) { 7379 if (s[i] == NULL) 7380 return (0); 7381 7382 if (strlcpy(r->label[i], s[i], sizeof(r->label[0])) >= 7383 sizeof(r->label[0])) { 7384 yyerror("rule label too long (max %d chars)", 7385 sizeof(r->label[0])-1); 7386 return (-1); 7387 } 7388 } 7389 return (0); 7390 } 7391 7392 int 7393 eth_rule_label(struct pfctl_eth_rule *r, char *s[PF_RULE_MAX_LABEL_COUNT]) 7394 { 7395 for (int i = 0; i < PF_RULE_MAX_LABEL_COUNT; i++) { 7396 if (s[i] == NULL) 7397 return (0); 7398 7399 if (strlcpy(r->label[i], s[i], sizeof(r->label[0])) >= 7400 sizeof(r->label[0])) { 7401 yyerror("rule label too long (max %d chars)", 7402 sizeof(r->label[0])-1); 7403 return (-1); 7404 } 7405 } 7406 return (0); 7407 } 7408 7409 u_int16_t 7410 parseicmpspec(char *w, sa_family_t af) 7411 { 7412 const struct icmpcodeent *p; 7413 u_long ulval; 7414 u_int8_t icmptype; 7415 7416 if (af == AF_INET) 7417 icmptype = returnicmpdefault >> 8; 7418 else 7419 icmptype = returnicmp6default >> 8; 7420 7421 if (atoul(w, &ulval) == -1) { 7422 if ((p = geticmpcodebyname(icmptype, w, af)) == NULL) { 7423 yyerror("unknown icmp code %s", w); 7424 return (0); 7425 } 7426 ulval = p->code; 7427 } 7428 if (ulval > 255) { 7429 yyerror("invalid icmp code %lu", ulval); 7430 return (0); 7431 } 7432 return (icmptype << 8 | ulval); 7433 } 7434 7435 int 7436 parseport(char *port, struct range *r, int extensions) 7437 { 7438 char *p = strchr(port, ':'); 7439 7440 if (p == NULL) { 7441 if ((r->a = getservice(port)) == -1) 7442 return (-1); 7443 r->b = 0; 7444 r->t = PF_OP_NONE; 7445 return (0); 7446 } 7447 if ((extensions & PPORT_STAR) && !strcmp(p+1, "*")) { 7448 *p = 0; 7449 if ((r->a = getservice(port)) == -1) 7450 return (-1); 7451 r->b = 0; 7452 r->t = PF_OP_IRG; 7453 return (0); 7454 } 7455 if ((extensions & PPORT_RANGE)) { 7456 *p++ = 0; 7457 if ((r->a = getservice(port)) == -1 || 7458 (r->b = getservice(p)) == -1) 7459 return (-1); 7460 if (r->a == r->b) { 7461 r->b = 0; 7462 r->t = PF_OP_NONE; 7463 } else 7464 r->t = PF_OP_RRG; 7465 return (0); 7466 } 7467 return (-1); 7468 } 7469 7470 int 7471 pfctl_load_anchors(int dev, struct pfctl *pf, struct pfr_buffer *trans) 7472 { 7473 struct loadanchors *la; 7474 7475 TAILQ_FOREACH(la, &loadanchorshead, entries) { 7476 if (pf->opts & PF_OPT_VERBOSE) 7477 fprintf(stderr, "\nLoading anchor %s from %s\n", 7478 la->anchorname, la->filename); 7479 if (pfctl_rules(dev, la->filename, pf->opts, pf->optimize, 7480 la->anchorname, trans) == -1) 7481 return (-1); 7482 } 7483 7484 return (0); 7485 } 7486 7487 int 7488 kw_casecmp(const void *k, const void *e) 7489 { 7490 return (strcasecmp(k, ((const struct keywords *)e)->k_name)); 7491 } 7492 7493 int 7494 map_tos(char *s, int *val) 7495 { 7496 /* DiffServ Codepoints and other TOS mappings */ 7497 const struct keywords toswords[] = { 7498 { "af11", IPTOS_DSCP_AF11 }, 7499 { "af12", IPTOS_DSCP_AF12 }, 7500 { "af13", IPTOS_DSCP_AF13 }, 7501 { "af21", IPTOS_DSCP_AF21 }, 7502 { "af22", IPTOS_DSCP_AF22 }, 7503 { "af23", IPTOS_DSCP_AF23 }, 7504 { "af31", IPTOS_DSCP_AF31 }, 7505 { "af32", IPTOS_DSCP_AF32 }, 7506 { "af33", IPTOS_DSCP_AF33 }, 7507 { "af41", IPTOS_DSCP_AF41 }, 7508 { "af42", IPTOS_DSCP_AF42 }, 7509 { "af43", IPTOS_DSCP_AF43 }, 7510 { "critical", IPTOS_PREC_CRITIC_ECP }, 7511 { "cs0", IPTOS_DSCP_CS0 }, 7512 { "cs1", IPTOS_DSCP_CS1 }, 7513 { "cs2", IPTOS_DSCP_CS2 }, 7514 { "cs3", IPTOS_DSCP_CS3 }, 7515 { "cs4", IPTOS_DSCP_CS4 }, 7516 { "cs5", IPTOS_DSCP_CS5 }, 7517 { "cs6", IPTOS_DSCP_CS6 }, 7518 { "cs7", IPTOS_DSCP_CS7 }, 7519 { "ef", IPTOS_DSCP_EF }, 7520 { "inetcontrol", IPTOS_PREC_INTERNETCONTROL }, 7521 { "lowdelay", IPTOS_LOWDELAY }, 7522 { "netcontrol", IPTOS_PREC_NETCONTROL }, 7523 { "reliability", IPTOS_RELIABILITY }, 7524 { "throughput", IPTOS_THROUGHPUT }, 7525 { "va", IPTOS_DSCP_VA } 7526 }; 7527 const struct keywords *p; 7528 7529 p = bsearch(s, toswords, sizeof(toswords)/sizeof(toswords[0]), 7530 sizeof(toswords[0]), kw_casecmp); 7531 7532 if (p) { 7533 *val = p->k_val; 7534 return (1); 7535 } 7536 return (0); 7537 } 7538 7539 int 7540 rt_tableid_max(void) 7541 { 7542 #ifdef __FreeBSD__ 7543 int fibs; 7544 size_t l = sizeof(fibs); 7545 7546 if (sysctlbyname("net.fibs", &fibs, &l, NULL, 0) == -1) 7547 fibs = 16; /* XXX RT_MAXFIBS, at least limit it some. */ 7548 /* 7549 * As the OpenBSD code only compares > and not >= we need to adjust 7550 * here given we only accept values of 0..n and want to avoid #ifdefs 7551 * in the grammar. 7552 */ 7553 return (fibs - 1); 7554 #else 7555 return (RT_TABLEID_MAX); 7556 #endif 7557 } 7558 7559 struct node_mac* 7560 node_mac_from_string(const char *str) 7561 { 7562 struct node_mac *m; 7563 7564 m = calloc(1, sizeof(struct node_mac)); 7565 if (m == NULL) 7566 err(1, "%s: calloc", __func__); 7567 7568 if (sscanf(str, "%02hhx:%02hhx:%02hhx:%02hhx:%02hhx:%02hhx", 7569 &m->mac[0], &m->mac[1], &m->mac[2], &m->mac[3], &m->mac[4], 7570 &m->mac[5]) != 6) { 7571 free(m); 7572 yyerror("invalid MAC address"); 7573 return (NULL); 7574 } 7575 7576 memset(m->mask, 0xff, ETHER_ADDR_LEN); 7577 m->isset = true; 7578 m->next = NULL; 7579 m->tail = m; 7580 7581 return (m); 7582 } 7583 7584 struct node_mac* 7585 node_mac_from_string_masklen(const char *str, int masklen) 7586 { 7587 struct node_mac *m; 7588 7589 if (masklen < 0 || masklen > (ETHER_ADDR_LEN * 8)) { 7590 yyerror("invalid MAC mask length"); 7591 return (NULL); 7592 } 7593 7594 m = node_mac_from_string(str); 7595 if (m == NULL) 7596 return (NULL); 7597 7598 memset(m->mask, 0, ETHER_ADDR_LEN); 7599 for (int i = 0; i < masklen; i++) 7600 m->mask[i / 8] |= 1 << (i % 8); 7601 7602 return (m); 7603 } 7604 7605 struct node_mac* 7606 node_mac_from_string_mask(const char *str, const char *mask) 7607 { 7608 struct node_mac *m; 7609 7610 m = node_mac_from_string(str); 7611 if (m == NULL) 7612 return (NULL); 7613 7614 if (sscanf(mask, "%02hhx:%02hhx:%02hhx:%02hhx:%02hhx:%02hhx", 7615 &m->mask[0], &m->mask[1], &m->mask[2], &m->mask[3], &m->mask[4], 7616 &m->mask[5]) != 6) { 7617 free(m); 7618 yyerror("invalid MAC mask"); 7619 return (NULL); 7620 } 7621 7622 return (m); 7623 } 7624 7625 int 7626 filteropts_to_rule(struct pfctl_rule *r, struct filter_opts *opts) 7627 { 7628 r->keep_state = opts->keep.action; 7629 r->pktrate.limit = opts->pktrate.limit; 7630 r->pktrate.seconds = opts->pktrate.seconds; 7631 r->prob = opts->prob; 7632 r->rtableid = opts->rtableid; 7633 r->ridentifier = opts->ridentifier; 7634 r->max_pkt_size = opts->max_pkt_size; 7635 r->tos = opts->tos; 7636 7637 if (opts->nodf) 7638 r->scrub_flags |= PFSTATE_NODF; 7639 if (opts->randomid) 7640 r->scrub_flags |= PFSTATE_RANDOMID; 7641 if (opts->minttl) 7642 r->min_ttl = opts->minttl; 7643 if (opts->max_mss) 7644 r->max_mss = opts->max_mss; 7645 7646 if (opts->tag) 7647 if (strlcpy(r->tagname, opts->tag, 7648 PF_TAG_NAME_SIZE) >= PF_TAG_NAME_SIZE) { 7649 yyerror("tag too long, max %u chars", 7650 PF_TAG_NAME_SIZE - 1); 7651 return (1); 7652 } 7653 if (opts->match_tag) 7654 if (strlcpy(r->match_tagname, opts->match_tag, 7655 PF_TAG_NAME_SIZE) >= PF_TAG_NAME_SIZE) { 7656 yyerror("tag too long, max %u chars", 7657 PF_TAG_NAME_SIZE - 1); 7658 return (1); 7659 } 7660 r->match_tag_not = opts->match_tag_not; 7661 7662 if (rule_label(r, opts->label)) 7663 return (1); 7664 for (int i = 0; i < PF_RULE_MAX_LABEL_COUNT; i++) 7665 free(opts->label[i]); 7666 7667 if (opts->marker & FOM_AFTO) 7668 r->rule_flag |= PFRULE_AFTO; 7669 if (opts->marker & FOM_SCRUB_TCP) 7670 r->scrub_flags |= PFSTATE_SCRUB_TCP; 7671 if (opts->marker & FOM_PRIO) 7672 r->prio = opts->prio ? opts->prio : PF_PRIO_ZERO; 7673 if (opts->marker & FOM_SETPRIO) { 7674 r->set_prio[0] = opts->set_prio[0]; 7675 r->set_prio[1] = opts->set_prio[1]; 7676 r->scrub_flags |= PFSTATE_SETPRIO; 7677 } 7678 if (opts->marker & FOM_SETTOS) { 7679 r->scrub_flags |= PFSTATE_SETTOS; 7680 r->set_tos = opts->settos; 7681 } 7682 7683 r->flags = opts->flags.b1; 7684 r->flagset = opts->flags.b2; 7685 if ((opts->flags.b1 & opts->flags.b2) != opts->flags.b1) { 7686 yyerror("flags always false"); 7687 return (1); 7688 } 7689 7690 if (opts->queues.qname != NULL) { 7691 if (strlcpy(r->qname, opts->queues.qname, 7692 sizeof(r->qname)) >= sizeof(r->qname)) { 7693 yyerror("rule qname too long (max " 7694 "%d chars)", sizeof(r->qname)-1); 7695 return (1); 7696 } 7697 free(opts->queues.qname); 7698 } 7699 if (opts->queues.pqname != NULL) { 7700 if (strlcpy(r->pqname, opts->queues.pqname, 7701 sizeof(r->pqname)) >= sizeof(r->pqname)) { 7702 yyerror("rule pqname too long (max " 7703 "%d chars)", sizeof(r->pqname)-1); 7704 return (1); 7705 } 7706 free(opts->queues.pqname); 7707 } 7708 7709 if (opts->fragment) 7710 r->rule_flag |= PFRULE_FRAGMENT; 7711 r->allow_opts = opts->allowopts; 7712 7713 return (0); 7714 } 7715