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 int lineno; 93 int errors; 94 } *file; 95 struct file *pushfile(const char *, int); 96 int popfile(void); 97 int check_file_secrecy(int, const char *); 98 int yyparse(void); 99 int yylex(void); 100 int yyerror(const char *, ...); 101 int kw_cmp(const void *, const void *); 102 int lookup(char *); 103 int lgetc(int); 104 int lungetc(int); 105 int findeol(void); 106 107 static TAILQ_HEAD(symhead, sym) symhead = TAILQ_HEAD_INITIALIZER(symhead); 108 struct sym { 109 TAILQ_ENTRY(sym) entry; 110 int used; 111 int persist; 112 char *nam; 113 char *val; 114 }; 115 int symset(const char *, const char *, int); 116 char *symget(const char *); 117 118 int atoul(char *, u_long *); 119 120 enum { 121 PFCTL_STATE_NONE, 122 PFCTL_STATE_OPTION, 123 PFCTL_STATE_ETHER, 124 PFCTL_STATE_SCRUB, 125 PFCTL_STATE_QUEUE, 126 PFCTL_STATE_NAT, 127 PFCTL_STATE_FILTER 128 }; 129 130 struct node_etherproto { 131 u_int16_t proto; 132 struct node_etherproto *next; 133 struct node_etherproto *tail; 134 }; 135 136 struct node_proto { 137 u_int8_t proto; 138 struct node_proto *next; 139 struct node_proto *tail; 140 }; 141 142 struct node_port { 143 u_int16_t port[2]; 144 u_int8_t op; 145 struct node_port *next; 146 struct node_port *tail; 147 }; 148 149 struct node_uid { 150 uid_t uid[2]; 151 u_int8_t op; 152 struct node_uid *next; 153 struct node_uid *tail; 154 }; 155 156 struct node_gid { 157 gid_t gid[2]; 158 u_int8_t op; 159 struct node_gid *next; 160 struct node_gid *tail; 161 }; 162 163 struct node_icmp { 164 u_int8_t code; 165 u_int8_t type; 166 u_int8_t proto; 167 struct node_icmp *next; 168 struct node_icmp *tail; 169 }; 170 171 enum { PF_STATE_OPT_MAX, PF_STATE_OPT_NOSYNC, PF_STATE_OPT_SRCTRACK, 172 PF_STATE_OPT_MAX_SRC_STATES, PF_STATE_OPT_MAX_SRC_CONN, 173 PF_STATE_OPT_MAX_SRC_CONN_RATE, PF_STATE_OPT_MAX_SRC_NODES, 174 PF_STATE_OPT_OVERLOAD, PF_STATE_OPT_STATELOCK, 175 PF_STATE_OPT_TIMEOUT, PF_STATE_OPT_SLOPPY, 176 PF_STATE_OPT_PFLOW }; 177 178 enum { PF_SRCTRACK_NONE, PF_SRCTRACK, PF_SRCTRACK_GLOBAL, PF_SRCTRACK_RULE }; 179 180 struct node_state_opt { 181 int type; 182 union { 183 u_int32_t max_states; 184 u_int32_t max_src_states; 185 u_int32_t max_src_conn; 186 struct { 187 u_int32_t limit; 188 u_int32_t seconds; 189 } max_src_conn_rate; 190 struct { 191 u_int8_t flush; 192 char tblname[PF_TABLE_NAME_SIZE]; 193 } overload; 194 u_int32_t max_src_nodes; 195 u_int8_t src_track; 196 u_int32_t statelock; 197 struct { 198 int number; 199 u_int32_t seconds; 200 } timeout; 201 } data; 202 struct node_state_opt *next; 203 struct node_state_opt *tail; 204 }; 205 206 struct peer { 207 struct node_host *host; 208 struct node_port *port; 209 }; 210 211 static struct node_queue { 212 char queue[PF_QNAME_SIZE]; 213 char parent[PF_QNAME_SIZE]; 214 char ifname[IFNAMSIZ]; 215 int scheduler; 216 struct node_queue *next; 217 struct node_queue *tail; 218 } *queues = NULL; 219 220 struct node_qassign { 221 char *qname; 222 char *pqname; 223 }; 224 225 static struct filter_opts { 226 int marker; 227 #define FOM_FLAGS 0x0001 228 #define FOM_ICMP 0x0002 229 #define FOM_TOS 0x0004 230 #define FOM_KEEP 0x0008 231 #define FOM_SRCTRACK 0x0010 232 #define FOM_MINTTL 0x0020 233 #define FOM_MAXMSS 0x0040 234 #define FOM_AFTO 0x0080 /* not yet implemmented */ 235 #define FOM_SETTOS 0x0100 236 #define FOM_SCRUB_TCP 0x0200 237 #define FOM_SETPRIO 0x0400 238 #define FOM_ONCE 0x1000 /* not yet implemmented */ 239 #define FOM_PRIO 0x2000 240 #define FOM_SETDELAY 0x4000 241 #define FOM_FRAGCACHE 0x8000 /* does not exist in OpenBSD */ 242 struct node_uid *uid; 243 struct node_gid *gid; 244 struct node_if *rcv; 245 struct { 246 u_int8_t b1; 247 u_int8_t b2; 248 u_int16_t w; 249 u_int16_t w2; 250 } flags; 251 struct node_icmp *icmpspec; 252 u_int32_t tos; 253 u_int32_t prob; 254 u_int32_t ridentifier; 255 struct { 256 int action; 257 struct node_state_opt *options; 258 } keep; 259 int fragment; 260 int allowopts; 261 char *label[PF_RULE_MAX_LABEL_COUNT]; 262 int labelcount; 263 struct node_qassign queues; 264 char *tag; 265 char *match_tag; 266 u_int8_t match_tag_not; 267 u_int16_t dnpipe; 268 u_int16_t dnrpipe; 269 u_int32_t free_flags; 270 u_int rtableid; 271 u_int8_t prio; 272 u_int8_t set_prio[2]; 273 struct { 274 struct node_host *addr; 275 u_int16_t port; 276 } divert; 277 /* new-style scrub opts */ 278 int nodf; 279 int minttl; 280 int settos; 281 int randomid; 282 int max_mss; 283 } filter_opts; 284 285 static struct antispoof_opts { 286 char *label[PF_RULE_MAX_LABEL_COUNT]; 287 int labelcount; 288 u_int32_t ridentifier; 289 u_int rtableid; 290 } antispoof_opts; 291 292 static struct scrub_opts { 293 int marker; 294 int nodf; 295 int minttl; 296 int maxmss; 297 int settos; 298 int fragcache; 299 int randomid; 300 int reassemble_tcp; 301 char *match_tag; 302 u_int8_t match_tag_not; 303 u_int rtableid; 304 } scrub_opts; 305 306 static struct queue_opts { 307 int marker; 308 #define QOM_BWSPEC 0x01 309 #define QOM_SCHEDULER 0x02 310 #define QOM_PRIORITY 0x04 311 #define QOM_TBRSIZE 0x08 312 #define QOM_QLIMIT 0x10 313 struct node_queue_bw queue_bwspec; 314 struct node_queue_opt scheduler; 315 int priority; 316 unsigned int tbrsize; 317 int qlimit; 318 } queue_opts; 319 320 static struct table_opts { 321 int flags; 322 int init_addr; 323 struct node_tinithead init_nodes; 324 } table_opts; 325 326 static struct pool_opts { 327 int marker; 328 #define POM_TYPE 0x01 329 #define POM_STICKYADDRESS 0x02 330 #define POM_ENDPI 0x04 331 u_int8_t opts; 332 int type; 333 int staticport; 334 struct pf_poolhashkey *key; 335 struct pf_mape_portset mape; 336 337 } pool_opts; 338 339 static struct codel_opts codel_opts; 340 static struct node_hfsc_opts hfsc_opts; 341 static struct node_fairq_opts fairq_opts; 342 static struct node_state_opt *keep_state_defaults = NULL; 343 static struct pfctl_watermarks syncookie_opts; 344 345 int disallow_table(struct node_host *, const char *); 346 int disallow_urpf_failed(struct node_host *, const char *); 347 int disallow_alias(struct node_host *, const char *); 348 int rule_consistent(struct pfctl_rule *, int); 349 int filter_consistent(struct pfctl_rule *, int); 350 int nat_consistent(struct pfctl_rule *); 351 int rdr_consistent(struct pfctl_rule *); 352 int process_tabledef(char *, struct table_opts *); 353 void expand_label_str(char *, size_t, const char *, const char *); 354 void expand_label_if(const char *, char *, size_t, const char *); 355 void expand_label_addr(const char *, char *, size_t, sa_family_t, 356 struct pf_rule_addr *); 357 void expand_label_port(const char *, char *, size_t, 358 struct pf_rule_addr *); 359 void expand_label_proto(const char *, char *, size_t, u_int8_t); 360 void expand_label_nr(const char *, char *, size_t, 361 struct pfctl_rule *); 362 void expand_eth_rule(struct pfctl_eth_rule *, 363 struct node_if *, struct node_etherproto *, 364 struct node_mac *, struct node_mac *, 365 struct node_host *, struct node_host *, const char *, 366 const char *); 367 void expand_rule(struct pfctl_rule *, struct node_if *, 368 struct node_host *, struct node_proto *, struct node_os *, 369 struct node_host *, struct node_port *, struct node_host *, 370 struct node_port *, struct node_uid *, struct node_gid *, 371 struct node_if *, struct node_icmp *, const char *); 372 int expand_altq(struct pf_altq *, struct node_if *, 373 struct node_queue *, struct node_queue_bw bwspec, 374 struct node_queue_opt *); 375 int expand_queue(struct pf_altq *, struct node_if *, 376 struct node_queue *, struct node_queue_bw, 377 struct node_queue_opt *); 378 int expand_skip_interface(struct node_if *); 379 380 int check_rulestate(int); 381 int getservice(char *); 382 int rule_label(struct pfctl_rule *, char *s[PF_RULE_MAX_LABEL_COUNT]); 383 int eth_rule_label(struct pfctl_eth_rule *, char *s[PF_RULE_MAX_LABEL_COUNT]); 384 int rt_tableid_max(void); 385 386 void mv_rules(struct pfctl_ruleset *, struct pfctl_ruleset *); 387 void mv_eth_rules(struct pfctl_eth_ruleset *, struct pfctl_eth_ruleset *); 388 void decide_address_family(struct node_host *, sa_family_t *); 389 void remove_invalid_hosts(struct node_host **, sa_family_t *); 390 int invalid_redirect(struct node_host *, sa_family_t); 391 u_int16_t parseicmpspec(char *, sa_family_t); 392 int kw_casecmp(const void *, const void *); 393 int map_tos(char *string, int *); 394 struct node_mac* node_mac_from_string(const char *); 395 struct node_mac* node_mac_from_string_masklen(const char *, int); 396 struct node_mac* node_mac_from_string_mask(const char *, const char *); 397 398 static TAILQ_HEAD(loadanchorshead, loadanchors) 399 loadanchorshead = TAILQ_HEAD_INITIALIZER(loadanchorshead); 400 401 struct loadanchors { 402 TAILQ_ENTRY(loadanchors) entries; 403 char *anchorname; 404 char *filename; 405 }; 406 407 typedef struct { 408 union { 409 int64_t number; 410 double probability; 411 int i; 412 char *string; 413 u_int rtableid; 414 struct { 415 u_int8_t b1; 416 u_int8_t b2; 417 u_int16_t w; 418 u_int16_t w2; 419 } b; 420 struct range { 421 int a; 422 int b; 423 int t; 424 } range; 425 struct node_if *interface; 426 struct node_proto *proto; 427 struct node_etherproto *etherproto; 428 struct node_icmp *icmp; 429 struct node_host *host; 430 struct node_os *os; 431 struct node_port *port; 432 struct node_uid *uid; 433 struct node_gid *gid; 434 struct node_state_opt *state_opt; 435 struct peer peer; 436 struct { 437 struct peer src, dst; 438 struct node_os *src_os; 439 } fromto; 440 struct { 441 struct node_mac *src; 442 struct node_mac *dst; 443 } etherfromto; 444 struct node_mac *mac; 445 struct { 446 struct node_mac *mac; 447 } etheraddr; 448 char *bridge_to; 449 struct { 450 struct node_host *host; 451 u_int8_t rt; 452 u_int8_t pool_opts; 453 sa_family_t af; 454 struct pf_poolhashkey *key; 455 } route; 456 struct redirection { 457 struct node_host *host; 458 struct range rport; 459 } *redirection; 460 struct { 461 int action; 462 struct node_state_opt *options; 463 } keep_state; 464 struct { 465 u_int8_t log; 466 u_int8_t logif; 467 u_int8_t quick; 468 } logquick; 469 struct { 470 int neg; 471 char *name; 472 } tagged; 473 struct pf_poolhashkey *hashkey; 474 struct node_queue *queue; 475 struct node_queue_opt queue_options; 476 struct node_queue_bw queue_bwspec; 477 struct node_qassign qassign; 478 struct filter_opts filter_opts; 479 struct antispoof_opts antispoof_opts; 480 struct queue_opts queue_opts; 481 struct scrub_opts scrub_opts; 482 struct table_opts table_opts; 483 struct pool_opts pool_opts; 484 struct node_hfsc_opts hfsc_opts; 485 struct node_fairq_opts fairq_opts; 486 struct codel_opts codel_opts; 487 struct pfctl_watermarks *watermarks; 488 } v; 489 int lineno; 490 } YYSTYPE; 491 492 #define PPORT_RANGE 1 493 #define PPORT_STAR 2 494 int parseport(char *, struct range *r, int); 495 496 #define DYNIF_MULTIADDR(addr) ((addr).type == PF_ADDR_DYNIFTL && \ 497 (!((addr).iflags & PFI_AFLAG_NOALIAS) || \ 498 !isdigit((addr).v.ifname[strlen((addr).v.ifname)-1]))) 499 500 %} 501 502 %token PASS BLOCK MATCH SCRUB RETURN IN OS OUT LOG QUICK ON FROM TO FLAGS 503 %token RETURNRST RETURNICMP RETURNICMP6 PROTO INET INET6 ALL ANY ICMPTYPE 504 %token ICMP6TYPE CODE KEEP MODULATE STATE PORT RDR NAT BINAT ARROW NODF 505 %token MINTTL ERROR ALLOWOPTS FASTROUTE FILENAME ROUTETO DUPTO REPLYTO NO LABEL 506 %token NOROUTE URPFFAILED FRAGMENT USER GROUP MAXMSS MAXIMUM TTL TOS DROP TABLE 507 %token REASSEMBLE ANCHOR NATANCHOR RDRANCHOR BINATANCHOR 508 %token SET OPTIMIZATION TIMEOUT LIMIT LOGINTERFACE BLOCKPOLICY FAILPOLICY 509 %token RANDOMID REQUIREORDER SYNPROXY FINGERPRINTS NOSYNC DEBUG SKIP HOSTID 510 %token ANTISPOOF FOR INCLUDE KEEPCOUNTERS SYNCOOKIES L3 511 %token ETHER 512 %token BITMASK RANDOM SOURCEHASH ROUNDROBIN STATICPORT PROBABILITY MAPEPORTSET 513 %token ALTQ CBQ CODEL PRIQ HFSC FAIRQ BANDWIDTH TBRSIZE LINKSHARE REALTIME 514 %token UPPERLIMIT QUEUE PRIORITY QLIMIT HOGS BUCKETS RTABLE TARGET INTERVAL 515 %token DNPIPE DNQUEUE RIDENTIFIER 516 %token LOAD RULESET_OPTIMIZATION PRIO 517 %token STICKYADDRESS ENDPI MAXSRCSTATES MAXSRCNODES SOURCETRACK GLOBAL RULE 518 %token MAXSRCCONN MAXSRCCONNRATE OVERLOAD FLUSH SLOPPY PFLOW 519 %token TAGGED TAG IFBOUND FLOATING STATEPOLICY STATEDEFAULTS ROUTE SETTOS 520 %token DIVERTTO DIVERTREPLY BRIDGE_TO RECEIVEDON 521 %token <v.string> STRING 522 %token <v.number> NUMBER 523 %token <v.i> PORTBINARY 524 %type <v.interface> interface if_list if_item_not if_item 525 %type <v.number> number icmptype icmp6type uid gid 526 %type <v.number> tos not yesno optnodf 527 %type <v.probability> probability 528 %type <v.i> no dir af fragcache optimizer syncookie_val 529 %type <v.i> sourcetrack flush unaryop statelock 530 %type <v.i> etherprotoval 531 %type <v.b> action nataction natpasslog scrubaction 532 %type <v.b> flags flag blockspec prio 533 %type <v.range> portplain portstar portrange 534 %type <v.hashkey> hashkey 535 %type <v.proto> proto proto_list proto_item 536 %type <v.number> protoval 537 %type <v.icmp> icmpspec 538 %type <v.icmp> icmp_list icmp_item 539 %type <v.icmp> icmp6_list icmp6_item 540 %type <v.number> reticmpspec reticmp6spec 541 %type <v.fromto> fromto l3fromto 542 %type <v.peer> ipportspec from to 543 %type <v.host> ipspec toipspec xhost host dynaddr host_list 544 %type <v.host> redir_host_list redirspec 545 %type <v.host> route_host route_host_list routespec 546 %type <v.os> os xos os_list 547 %type <v.port> portspec port_list port_item 548 %type <v.uid> uids uid_list uid_item 549 %type <v.gid> gids gid_list gid_item 550 %type <v.route> route 551 %type <v.redirection> redirection redirpool 552 %type <v.string> label stringall tag anchorname 553 %type <v.string> string varstring numberstring 554 %type <v.keep_state> keep 555 %type <v.state_opt> state_opt_spec state_opt_list state_opt_item 556 %type <v.logquick> logquick quick log logopts logopt 557 %type <v.interface> antispoof_ifspc antispoof_iflst antispoof_if 558 %type <v.qassign> qname etherqname 559 %type <v.queue> qassign qassign_list qassign_item 560 %type <v.queue_options> scheduler 561 %type <v.number> cbqflags_list cbqflags_item 562 %type <v.number> priqflags_list priqflags_item 563 %type <v.hfsc_opts> hfscopts_list hfscopts_item hfsc_opts 564 %type <v.fairq_opts> fairqopts_list fairqopts_item fairq_opts 565 %type <v.codel_opts> codelopts_list codelopts_item codel_opts 566 %type <v.queue_bwspec> bandwidth 567 %type <v.filter_opts> filter_opts filter_opt filter_opts_l etherfilter_opts etherfilter_opt etherfilter_opts_l 568 %type <v.filter_opts> filter_sets filter_set filter_sets_l 569 %type <v.antispoof_opts> antispoof_opts antispoof_opt antispoof_opts_l 570 %type <v.queue_opts> queue_opts queue_opt queue_opts_l 571 %type <v.scrub_opts> scrub_opts scrub_opt scrub_opts_l 572 %type <v.table_opts> table_opts table_opt table_opts_l 573 %type <v.pool_opts> pool_opts pool_opt pool_opts_l 574 %type <v.tagged> tagged 575 %type <v.rtableid> rtable 576 %type <v.watermarks> syncookie_opts 577 %type <v.etherproto> etherproto etherproto_list etherproto_item 578 %type <v.etherfromto> etherfromto 579 %type <v.etheraddr> etherfrom etherto 580 %type <v.bridge_to> bridge 581 %type <v.mac> xmac mac mac_list macspec 582 %% 583 584 ruleset : /* empty */ 585 | ruleset include '\n' 586 | ruleset '\n' 587 | ruleset option '\n' 588 | ruleset etherrule '\n' 589 | ruleset etheranchorrule '\n' 590 | ruleset scrubrule '\n' 591 | ruleset natrule '\n' 592 | ruleset binatrule '\n' 593 | ruleset pfrule '\n' 594 | ruleset anchorrule '\n' 595 | ruleset loadrule '\n' 596 | ruleset altqif '\n' 597 | ruleset queuespec '\n' 598 | ruleset varset '\n' 599 | ruleset antispoof '\n' 600 | ruleset tabledef '\n' 601 | '{' fakeanchor '}' '\n'; 602 | ruleset error '\n' { file->errors++; } 603 ; 604 605 include : INCLUDE STRING { 606 struct file *nfile; 607 608 if ((nfile = pushfile($2, 0)) == NULL) { 609 yyerror("failed to include file %s", $2); 610 free($2); 611 YYERROR; 612 } 613 free($2); 614 615 file = nfile; 616 lungetc('\n'); 617 } 618 ; 619 620 /* 621 * apply to previouslys specified rule: must be careful to note 622 * what that is: pf or nat or binat or rdr 623 */ 624 fakeanchor : fakeanchor '\n' 625 | fakeanchor anchorrule '\n' 626 | fakeanchor binatrule '\n' 627 | fakeanchor natrule '\n' 628 | fakeanchor pfrule '\n' 629 | fakeanchor error '\n' 630 ; 631 632 optimizer : string { 633 if (!strcmp($1, "none")) 634 $$ = 0; 635 else if (!strcmp($1, "basic")) 636 $$ = PF_OPTIMIZE_BASIC; 637 else if (!strcmp($1, "profile")) 638 $$ = PF_OPTIMIZE_BASIC | PF_OPTIMIZE_PROFILE; 639 else { 640 yyerror("unknown ruleset-optimization %s", $1); 641 YYERROR; 642 } 643 } 644 ; 645 646 optnodf : /* empty */ { $$ = 0; } 647 | NODF { $$ = 1; } 648 ; 649 650 option : SET REASSEMBLE yesno optnodf { 651 if (check_rulestate(PFCTL_STATE_OPTION)) 652 YYERROR; 653 pfctl_set_reassembly(pf, $3, $4); 654 } 655 | SET OPTIMIZATION STRING { 656 if (check_rulestate(PFCTL_STATE_OPTION)) { 657 free($3); 658 YYERROR; 659 } 660 if (pfctl_set_optimization(pf, $3) != 0) { 661 yyerror("unknown optimization %s", $3); 662 free($3); 663 YYERROR; 664 } 665 free($3); 666 } 667 | SET RULESET_OPTIMIZATION optimizer { 668 if (!(pf->opts & PF_OPT_OPTIMIZE)) { 669 pf->opts |= PF_OPT_OPTIMIZE; 670 pf->optimize = $3; 671 } 672 } 673 | SET TIMEOUT timeout_spec 674 | SET TIMEOUT '{' optnl timeout_list '}' 675 | SET LIMIT limit_spec 676 | SET LIMIT '{' optnl limit_list '}' 677 | SET LOGINTERFACE stringall { 678 if (check_rulestate(PFCTL_STATE_OPTION)) { 679 free($3); 680 YYERROR; 681 } 682 if (pfctl_set_logif(pf, $3) != 0) { 683 yyerror("error setting loginterface %s", $3); 684 free($3); 685 YYERROR; 686 } 687 free($3); 688 } 689 | SET HOSTID number { 690 if ($3 == 0 || $3 > UINT_MAX) { 691 yyerror("hostid must be non-zero"); 692 YYERROR; 693 } 694 if (pfctl_set_hostid(pf, $3) != 0) { 695 yyerror("error setting hostid %08x", $3); 696 YYERROR; 697 } 698 } 699 | SET BLOCKPOLICY DROP { 700 if (pf->opts & PF_OPT_VERBOSE) 701 printf("set block-policy drop\n"); 702 if (check_rulestate(PFCTL_STATE_OPTION)) 703 YYERROR; 704 blockpolicy = PFRULE_DROP; 705 } 706 | SET BLOCKPOLICY RETURN { 707 if (pf->opts & PF_OPT_VERBOSE) 708 printf("set block-policy return\n"); 709 if (check_rulestate(PFCTL_STATE_OPTION)) 710 YYERROR; 711 blockpolicy = PFRULE_RETURN; 712 } 713 | SET FAILPOLICY DROP { 714 if (pf->opts & PF_OPT_VERBOSE) 715 printf("set fail-policy drop\n"); 716 if (check_rulestate(PFCTL_STATE_OPTION)) 717 YYERROR; 718 failpolicy = PFRULE_DROP; 719 } 720 | SET FAILPOLICY RETURN { 721 if (pf->opts & PF_OPT_VERBOSE) 722 printf("set fail-policy return\n"); 723 if (check_rulestate(PFCTL_STATE_OPTION)) 724 YYERROR; 725 failpolicy = PFRULE_RETURN; 726 } 727 | SET REQUIREORDER yesno { 728 if (pf->opts & PF_OPT_VERBOSE) 729 printf("set require-order %s\n", 730 $3 == 1 ? "yes" : "no"); 731 require_order = $3; 732 } 733 | SET FINGERPRINTS STRING { 734 if (pf->opts & PF_OPT_VERBOSE) 735 printf("set fingerprints \"%s\"\n", $3); 736 if (check_rulestate(PFCTL_STATE_OPTION)) { 737 free($3); 738 YYERROR; 739 } 740 if (!pf->anchor->name[0]) { 741 if (pfctl_file_fingerprints(pf->dev, 742 pf->opts, $3)) { 743 yyerror("error loading " 744 "fingerprints %s", $3); 745 free($3); 746 YYERROR; 747 } 748 } 749 free($3); 750 } 751 | SET STATEPOLICY statelock { 752 if (pf->opts & PF_OPT_VERBOSE) 753 switch ($3) { 754 case 0: 755 printf("set state-policy floating\n"); 756 break; 757 case PFRULE_IFBOUND: 758 printf("set state-policy if-bound\n"); 759 break; 760 } 761 default_statelock = $3; 762 } 763 | SET DEBUG STRING { 764 if (check_rulestate(PFCTL_STATE_OPTION)) { 765 free($3); 766 YYERROR; 767 } 768 if (pfctl_do_set_debug(pf, $3) != 0) { 769 yyerror("error setting debuglevel %s", $3); 770 free($3); 771 YYERROR; 772 } 773 free($3); 774 } 775 | SET SKIP interface { 776 if (expand_skip_interface($3) != 0) { 777 yyerror("error setting skip interface(s)"); 778 YYERROR; 779 } 780 } 781 | SET STATEDEFAULTS state_opt_list { 782 if (keep_state_defaults != NULL) { 783 yyerror("cannot redefine state-defaults"); 784 YYERROR; 785 } 786 keep_state_defaults = $3; 787 } 788 | SET KEEPCOUNTERS { 789 pf->keep_counters = true; 790 } 791 | SET SYNCOOKIES syncookie_val syncookie_opts { 792 if (pfctl_cfg_syncookies(pf, $3, $4)) { 793 yyerror("error setting syncookies"); 794 YYERROR; 795 } 796 } 797 ; 798 799 syncookie_val : STRING { 800 if (!strcmp($1, "never")) 801 $$ = PFCTL_SYNCOOKIES_NEVER; 802 else if (!strcmp($1, "adaptive")) 803 $$ = PFCTL_SYNCOOKIES_ADAPTIVE; 804 else if (!strcmp($1, "always")) 805 $$ = PFCTL_SYNCOOKIES_ALWAYS; 806 else { 807 yyerror("illegal value for syncookies"); 808 YYERROR; 809 } 810 } 811 ; 812 syncookie_opts : /* empty */ { $$ = NULL; } 813 | { 814 memset(&syncookie_opts, 0, sizeof(syncookie_opts)); 815 } '(' syncookie_opt_l ')' { $$ = &syncookie_opts; } 816 ; 817 818 syncookie_opt_l : syncookie_opt_l comma syncookie_opt 819 | syncookie_opt 820 ; 821 822 syncookie_opt : STRING STRING { 823 double val; 824 char *cp; 825 826 val = strtod($2, &cp); 827 if (cp == NULL || strcmp(cp, "%")) 828 YYERROR; 829 if (val <= 0 || val > 100) { 830 yyerror("illegal percentage value"); 831 YYERROR; 832 } 833 if (!strcmp($1, "start")) { 834 syncookie_opts.hi = val; 835 } else if (!strcmp($1, "end")) { 836 syncookie_opts.lo = val; 837 } else { 838 yyerror("illegal syncookie option"); 839 YYERROR; 840 } 841 } 842 ; 843 844 stringall : STRING { $$ = $1; } 845 | ALL { 846 if (($$ = strdup("all")) == NULL) { 847 err(1, "stringall: strdup"); 848 } 849 } 850 ; 851 852 string : STRING string { 853 if (asprintf(&$$, "%s %s", $1, $2) == -1) 854 err(1, "string: asprintf"); 855 free($1); 856 free($2); 857 } 858 | STRING 859 ; 860 861 varstring : numberstring varstring { 862 if (asprintf(&$$, "%s %s", $1, $2) == -1) 863 err(1, "string: asprintf"); 864 free($1); 865 free($2); 866 } 867 | numberstring 868 ; 869 870 numberstring : NUMBER { 871 char *s; 872 if (asprintf(&s, "%lld", (long long)$1) == -1) { 873 yyerror("string: asprintf"); 874 YYERROR; 875 } 876 $$ = s; 877 } 878 | STRING 879 ; 880 881 varset : STRING '=' varstring { 882 char *s = $1; 883 if (pf->opts & PF_OPT_VERBOSE) 884 printf("%s = \"%s\"\n", $1, $3); 885 while (*s++) { 886 if (isspace((unsigned char)*s)) { 887 yyerror("macro name cannot contain " 888 "whitespace"); 889 YYERROR; 890 } 891 } 892 if (symset($1, $3, 0) == -1) 893 err(1, "cannot store variable %s", $1); 894 free($1); 895 free($3); 896 } 897 ; 898 899 anchorname : STRING { $$ = $1; } 900 | /* empty */ { $$ = NULL; } 901 ; 902 903 pfa_anchorlist : /* empty */ 904 | pfa_anchorlist '\n' 905 | pfa_anchorlist pfrule '\n' 906 | pfa_anchorlist anchorrule '\n' 907 ; 908 909 pfa_anchor : '{' 910 { 911 char ta[PF_ANCHOR_NAME_SIZE]; 912 struct pfctl_ruleset *rs; 913 914 /* stepping into a brace anchor */ 915 pf->asd++; 916 pf->bn++; 917 918 /* 919 * Anchor contents are parsed before the anchor rule 920 * production completes, so we don't know the real 921 * location yet. Create a holding ruleset in the root; 922 * contents will be moved afterwards. 923 */ 924 snprintf(ta, PF_ANCHOR_NAME_SIZE, "_%d", pf->bn); 925 rs = pf_find_or_create_ruleset(ta); 926 if (rs == NULL) 927 err(1, "pfa_anchor: pf_find_or_create_ruleset"); 928 pf->astack[pf->asd] = rs->anchor; 929 pf->anchor = rs->anchor; 930 } '\n' pfa_anchorlist '}' 931 { 932 pf->alast = pf->anchor; 933 pf->asd--; 934 pf->anchor = pf->astack[pf->asd]; 935 } 936 | /* empty */ 937 ; 938 939 anchorrule : ANCHOR anchorname dir quick interface af proto fromto 940 filter_opts pfa_anchor 941 { 942 struct pfctl_rule r; 943 struct node_proto *proto; 944 945 if (check_rulestate(PFCTL_STATE_FILTER)) { 946 if ($2) 947 free($2); 948 YYERROR; 949 } 950 951 if ($2 && ($2[0] == '_' || strstr($2, "/_") != NULL)) { 952 free($2); 953 yyerror("anchor names beginning with '_' " 954 "are reserved for internal use"); 955 YYERROR; 956 } 957 958 memset(&r, 0, sizeof(r)); 959 if (pf->astack[pf->asd + 1]) { 960 if ($2 && strchr($2, '/') != NULL) { 961 free($2); 962 yyerror("anchor paths containing '/' " 963 "cannot be used for inline anchors."); 964 YYERROR; 965 } 966 967 /* Move inline rules into relative location. */ 968 pfctl_anchor_setup(&r, 969 &pf->astack[pf->asd]->ruleset, 970 $2 ? $2 : pf->alast->name); 971 972 if (r.anchor == NULL) 973 err(1, "anchorrule: unable to " 974 "create ruleset"); 975 976 if (pf->alast != r.anchor) { 977 if (r.anchor->match) { 978 yyerror("inline anchor '%s' " 979 "already exists", 980 r.anchor->name); 981 YYERROR; 982 } 983 mv_rules(&pf->alast->ruleset, 984 &r.anchor->ruleset); 985 } 986 pf_remove_if_empty_ruleset(&pf->alast->ruleset); 987 pf->alast = r.anchor; 988 } else { 989 if (!$2) { 990 yyerror("anchors without explicit " 991 "rules must specify a name"); 992 YYERROR; 993 } 994 } 995 r.direction = $3; 996 r.quick = $4.quick; 997 r.af = $6; 998 r.prob = $9.prob; 999 r.rtableid = $9.rtableid; 1000 r.ridentifier = $9.ridentifier; 1001 1002 if ($9.tag) 1003 if (strlcpy(r.tagname, $9.tag, 1004 PF_TAG_NAME_SIZE) >= PF_TAG_NAME_SIZE) { 1005 yyerror("tag too long, max %u chars", 1006 PF_TAG_NAME_SIZE - 1); 1007 YYERROR; 1008 } 1009 if ($9.match_tag) 1010 if (strlcpy(r.match_tagname, $9.match_tag, 1011 PF_TAG_NAME_SIZE) >= PF_TAG_NAME_SIZE) { 1012 yyerror("tag too long, max %u chars", 1013 PF_TAG_NAME_SIZE - 1); 1014 YYERROR; 1015 } 1016 r.match_tag_not = $9.match_tag_not; 1017 if (rule_label(&r, $9.label)) 1018 YYERROR; 1019 for (int i = 0; i < PF_RULE_MAX_LABEL_COUNT; i++) 1020 free($9.label[i]); 1021 r.flags = $9.flags.b1; 1022 r.flagset = $9.flags.b2; 1023 if (($9.flags.b1 & $9.flags.b2) != $9.flags.b1) { 1024 yyerror("flags always false"); 1025 YYERROR; 1026 } 1027 if ($9.flags.b1 || $9.flags.b2 || $8.src_os) { 1028 for (proto = $7; proto != NULL && 1029 proto->proto != IPPROTO_TCP; 1030 proto = proto->next) 1031 ; /* nothing */ 1032 if (proto == NULL && $7 != NULL) { 1033 if ($9.flags.b1 || $9.flags.b2) 1034 yyerror( 1035 "flags only apply to tcp"); 1036 if ($8.src_os) 1037 yyerror( 1038 "OS fingerprinting only " 1039 "applies to tcp"); 1040 YYERROR; 1041 } 1042 } 1043 1044 r.tos = $9.tos; 1045 1046 if ($9.keep.action) { 1047 yyerror("cannot specify state handling " 1048 "on anchors"); 1049 YYERROR; 1050 } 1051 1052 if ($9.match_tag) 1053 if (strlcpy(r.match_tagname, $9.match_tag, 1054 PF_TAG_NAME_SIZE) >= PF_TAG_NAME_SIZE) { 1055 yyerror("tag too long, max %u chars", 1056 PF_TAG_NAME_SIZE - 1); 1057 YYERROR; 1058 } 1059 r.match_tag_not = $9.match_tag_not; 1060 if ($9.marker & FOM_PRIO) { 1061 if ($9.prio == 0) 1062 r.prio = PF_PRIO_ZERO; 1063 else 1064 r.prio = $9.prio; 1065 } 1066 if ($9.marker & FOM_SETPRIO) { 1067 r.set_prio[0] = $9.set_prio[0]; 1068 r.set_prio[1] = $9.set_prio[1]; 1069 r.scrub_flags |= PFSTATE_SETPRIO; 1070 } 1071 1072 decide_address_family($8.src.host, &r.af); 1073 decide_address_family($8.dst.host, &r.af); 1074 1075 expand_rule(&r, $5, NULL, $7, $8.src_os, 1076 $8.src.host, $8.src.port, $8.dst.host, $8.dst.port, 1077 $9.uid, $9.gid, $9.rcv, $9.icmpspec, 1078 pf->astack[pf->asd + 1] ? pf->alast->name : $2); 1079 free($2); 1080 pf->astack[pf->asd + 1] = NULL; 1081 } 1082 | NATANCHOR string interface af proto fromto rtable { 1083 struct pfctl_rule r; 1084 1085 if (check_rulestate(PFCTL_STATE_NAT)) { 1086 free($2); 1087 YYERROR; 1088 } 1089 1090 memset(&r, 0, sizeof(r)); 1091 r.action = PF_NAT; 1092 r.af = $4; 1093 r.rtableid = $7; 1094 1095 decide_address_family($6.src.host, &r.af); 1096 decide_address_family($6.dst.host, &r.af); 1097 1098 expand_rule(&r, $3, NULL, $5, $6.src_os, 1099 $6.src.host, $6.src.port, $6.dst.host, $6.dst.port, 1100 0, 0, 0, 0, $2); 1101 free($2); 1102 } 1103 | RDRANCHOR string interface af proto fromto rtable { 1104 struct pfctl_rule r; 1105 1106 if (check_rulestate(PFCTL_STATE_NAT)) { 1107 free($2); 1108 YYERROR; 1109 } 1110 1111 memset(&r, 0, sizeof(r)); 1112 r.action = PF_RDR; 1113 r.af = $4; 1114 r.rtableid = $7; 1115 1116 decide_address_family($6.src.host, &r.af); 1117 decide_address_family($6.dst.host, &r.af); 1118 1119 if ($6.src.port != NULL) { 1120 yyerror("source port parameter not supported" 1121 " in rdr-anchor"); 1122 YYERROR; 1123 } 1124 if ($6.dst.port != NULL) { 1125 if ($6.dst.port->next != NULL) { 1126 yyerror("destination port list " 1127 "expansion not supported in " 1128 "rdr-anchor"); 1129 YYERROR; 1130 } else if ($6.dst.port->op != PF_OP_EQ) { 1131 yyerror("destination port operators" 1132 " not supported in rdr-anchor"); 1133 YYERROR; 1134 } 1135 r.dst.port[0] = $6.dst.port->port[0]; 1136 r.dst.port[1] = $6.dst.port->port[1]; 1137 r.dst.port_op = $6.dst.port->op; 1138 } 1139 1140 expand_rule(&r, $3, NULL, $5, $6.src_os, 1141 $6.src.host, $6.src.port, $6.dst.host, $6.dst.port, 1142 0, 0, 0, 0, $2); 1143 free($2); 1144 } 1145 | BINATANCHOR string interface af proto fromto rtable { 1146 struct pfctl_rule r; 1147 1148 if (check_rulestate(PFCTL_STATE_NAT)) { 1149 free($2); 1150 YYERROR; 1151 } 1152 1153 memset(&r, 0, sizeof(r)); 1154 r.action = PF_BINAT; 1155 r.af = $4; 1156 r.rtableid = $7; 1157 if ($5 != NULL) { 1158 if ($5->next != NULL) { 1159 yyerror("proto list expansion" 1160 " not supported in binat-anchor"); 1161 YYERROR; 1162 } 1163 r.proto = $5->proto; 1164 free($5); 1165 } 1166 1167 if ($6.src.host != NULL || $6.src.port != NULL || 1168 $6.dst.host != NULL || $6.dst.port != NULL) { 1169 yyerror("fromto parameter not supported" 1170 " in binat-anchor"); 1171 YYERROR; 1172 } 1173 1174 decide_address_family($6.src.host, &r.af); 1175 decide_address_family($6.dst.host, &r.af); 1176 1177 pfctl_append_rule(pf, &r, $2); 1178 free($2); 1179 } 1180 ; 1181 1182 loadrule : LOAD ANCHOR string FROM string { 1183 struct loadanchors *loadanchor; 1184 1185 if (strlen(pf->anchor->name) + 1 + 1186 strlen($3) >= MAXPATHLEN) { 1187 yyerror("anchorname %s too long, max %u\n", 1188 $3, MAXPATHLEN - 1); 1189 free($3); 1190 YYERROR; 1191 } 1192 loadanchor = calloc(1, sizeof(struct loadanchors)); 1193 if (loadanchor == NULL) 1194 err(1, "loadrule: calloc"); 1195 if ((loadanchor->anchorname = malloc(MAXPATHLEN)) == 1196 NULL) 1197 err(1, "loadrule: malloc"); 1198 if (pf->anchor->name[0]) 1199 snprintf(loadanchor->anchorname, MAXPATHLEN, 1200 "%s/%s", pf->anchor->name, $3); 1201 else 1202 strlcpy(loadanchor->anchorname, $3, MAXPATHLEN); 1203 if ((loadanchor->filename = strdup($5)) == NULL) 1204 err(1, "loadrule: strdup"); 1205 1206 TAILQ_INSERT_TAIL(&loadanchorshead, loadanchor, 1207 entries); 1208 1209 free($3); 1210 free($5); 1211 }; 1212 1213 scrubaction : no SCRUB { 1214 $$.b2 = $$.w = 0; 1215 if ($1) 1216 $$.b1 = PF_NOSCRUB; 1217 else 1218 $$.b1 = PF_SCRUB; 1219 } 1220 ; 1221 1222 etherrule : ETHER action dir quick interface bridge etherproto etherfromto l3fromto etherfilter_opts 1223 { 1224 struct pfctl_eth_rule r; 1225 1226 bzero(&r, sizeof(r)); 1227 1228 if (check_rulestate(PFCTL_STATE_ETHER)) 1229 YYERROR; 1230 1231 r.action = $2.b1; 1232 r.direction = $3; 1233 r.quick = $4.quick; 1234 if ($10.tag != NULL) 1235 strlcpy(r.tagname, $10.tag, sizeof(r.tagname)); 1236 if ($10.match_tag) 1237 if (strlcpy(r.match_tagname, $10.match_tag, 1238 PF_TAG_NAME_SIZE) >= PF_TAG_NAME_SIZE) { 1239 yyerror("tag too long, max %u chars", 1240 PF_TAG_NAME_SIZE - 1); 1241 YYERROR; 1242 } 1243 r.match_tag_not = $10.match_tag_not; 1244 if ($10.queues.qname != NULL) 1245 strlcpy(r.qname, $10.queues.qname, sizeof(r.qname)); 1246 r.dnpipe = $10.dnpipe; 1247 r.dnflags = $10.free_flags; 1248 if (eth_rule_label(&r, $10.label)) 1249 YYERROR; 1250 for (int i = 0; i < PF_RULE_MAX_LABEL_COUNT; i++) 1251 free($10.label[i]); 1252 r.ridentifier = $10.ridentifier; 1253 1254 expand_eth_rule(&r, $5, $7, $8.src, $8.dst, 1255 $9.src.host, $9.dst.host, $6, ""); 1256 } 1257 ; 1258 1259 etherpfa_anchorlist : /* empty */ 1260 | etherpfa_anchorlist '\n' 1261 | etherpfa_anchorlist etherrule '\n' 1262 | etherpfa_anchorlist etheranchorrule '\n' 1263 ; 1264 1265 etherpfa_anchor : '{' 1266 { 1267 char ta[PF_ANCHOR_NAME_SIZE]; 1268 struct pfctl_eth_ruleset *rs; 1269 1270 /* steping into a brace anchor */ 1271 pf->asd++; 1272 pf->bn++; 1273 1274 /* create a holding ruleset in the root */ 1275 snprintf(ta, PF_ANCHOR_NAME_SIZE, "_%d", pf->bn); 1276 rs = pf_find_or_create_eth_ruleset(ta); 1277 if (rs == NULL) 1278 err(1, "etherpfa_anchor: pf_find_or_create_eth_ruleset"); 1279 pf->eastack[pf->asd] = rs->anchor; 1280 pf->eanchor = rs->anchor; 1281 } '\n' etherpfa_anchorlist '}' 1282 { 1283 pf->ealast = pf->eanchor; 1284 pf->asd--; 1285 pf->eanchor = pf->eastack[pf->asd]; 1286 } 1287 | /* empty */ 1288 ; 1289 1290 etheranchorrule : ETHER ANCHOR anchorname dir quick interface etherproto etherfromto l3fromto etherpfa_anchor 1291 { 1292 struct pfctl_eth_rule r; 1293 1294 if (check_rulestate(PFCTL_STATE_ETHER)) { 1295 free($3); 1296 YYERROR; 1297 } 1298 1299 if ($3 && ($3[0] == '_' || strstr($3, "/_") != NULL)) { 1300 free($3); 1301 yyerror("anchor names beginning with '_' " 1302 "are reserved for internal use"); 1303 YYERROR; 1304 } 1305 1306 memset(&r, 0, sizeof(r)); 1307 if (pf->eastack[pf->asd + 1]) { 1308 if ($3 && strchr($3, '/') != NULL) { 1309 free($3); 1310 yyerror("anchor paths containing '/' " 1311 "cannot be used for inline anchors."); 1312 YYERROR; 1313 } 1314 1315 /* Move inline rules into relative location. */ 1316 pfctl_eth_anchor_setup(pf, &r, 1317 &pf->eastack[pf->asd]->ruleset, 1318 $3 ? $3 : pf->ealast->name); 1319 if (r.anchor == NULL) 1320 err(1, "etheranchorrule: unable to " 1321 "create ruleset"); 1322 1323 if (pf->ealast != r.anchor) { 1324 if (r.anchor->match) { 1325 yyerror("inline anchor '%s' " 1326 "already exists", 1327 r.anchor->name); 1328 YYERROR; 1329 } 1330 mv_eth_rules(&pf->ealast->ruleset, 1331 &r.anchor->ruleset); 1332 } 1333 pf_remove_if_empty_eth_ruleset(&pf->ealast->ruleset); 1334 pf->ealast = r.anchor; 1335 } else { 1336 if (!$3) { 1337 yyerror("anchors without explicit " 1338 "rules must specify a name"); 1339 YYERROR; 1340 } 1341 } 1342 1343 r.direction = $4; 1344 r.quick = $5.quick; 1345 1346 expand_eth_rule(&r, $6, $7, $8.src, $8.dst, 1347 $9.src.host, $9.dst.host, NULL, 1348 pf->eastack[pf->asd + 1] ? pf->ealast->name : $3); 1349 1350 free($3); 1351 pf->eastack[pf->asd + 1] = NULL; 1352 } 1353 ; 1354 1355 etherfilter_opts : { 1356 bzero(&filter_opts, sizeof filter_opts); 1357 } 1358 etherfilter_opts_l 1359 { $$ = filter_opts; } 1360 | /* empty */ { 1361 bzero(&filter_opts, sizeof filter_opts); 1362 $$ = filter_opts; 1363 } 1364 ; 1365 1366 etherfilter_opts_l : etherfilter_opts_l etherfilter_opt 1367 | etherfilter_opt 1368 1369 etherfilter_opt : etherqname { 1370 if (filter_opts.queues.qname) { 1371 yyerror("queue cannot be redefined"); 1372 YYERROR; 1373 } 1374 filter_opts.queues = $1; 1375 } 1376 | RIDENTIFIER number { 1377 filter_opts.ridentifier = $2; 1378 } 1379 | label { 1380 if (filter_opts.labelcount >= PF_RULE_MAX_LABEL_COUNT) { 1381 yyerror("label can only be used %d times", PF_RULE_MAX_LABEL_COUNT); 1382 YYERROR; 1383 } 1384 filter_opts.label[filter_opts.labelcount++] = $1; 1385 } 1386 | TAG string { 1387 filter_opts.tag = $2; 1388 } 1389 | not TAGGED string { 1390 filter_opts.match_tag = $3; 1391 filter_opts.match_tag_not = $1; 1392 } 1393 | DNPIPE number { 1394 filter_opts.dnpipe = $2; 1395 filter_opts.free_flags |= PFRULE_DN_IS_PIPE; 1396 } 1397 | DNQUEUE number { 1398 filter_opts.dnpipe = $2; 1399 filter_opts.free_flags |= PFRULE_DN_IS_QUEUE; 1400 } 1401 ; 1402 1403 bridge : /* empty */ { 1404 $$ = NULL; 1405 } 1406 | BRIDGE_TO STRING { 1407 $$ = strdup($2); 1408 } 1409 ; 1410 1411 scrubrule : scrubaction dir logquick interface af proto fromto scrub_opts 1412 { 1413 struct pfctl_rule r; 1414 1415 if (check_rulestate(PFCTL_STATE_SCRUB)) 1416 YYERROR; 1417 1418 memset(&r, 0, sizeof(r)); 1419 1420 r.action = $1.b1; 1421 r.direction = $2; 1422 1423 r.log = $3.log; 1424 r.logif = $3.logif; 1425 if ($3.quick) { 1426 yyerror("scrub rules do not support 'quick'"); 1427 YYERROR; 1428 } 1429 1430 r.af = $5; 1431 if ($8.nodf) 1432 r.rule_flag |= PFRULE_NODF; 1433 if ($8.randomid) 1434 r.rule_flag |= PFRULE_RANDOMID; 1435 if ($8.reassemble_tcp) { 1436 if (r.direction != PF_INOUT) { 1437 yyerror("reassemble tcp rules can not " 1438 "specify direction"); 1439 YYERROR; 1440 } 1441 r.rule_flag |= PFRULE_REASSEMBLE_TCP; 1442 } 1443 if ($8.minttl) 1444 r.min_ttl = $8.minttl; 1445 if ($8.maxmss) 1446 r.max_mss = $8.maxmss; 1447 if ($8.marker & FOM_SETTOS) { 1448 r.rule_flag |= PFRULE_SET_TOS; 1449 r.set_tos = $8.settos; 1450 } 1451 if ($8.fragcache) 1452 r.rule_flag |= $8.fragcache; 1453 if ($8.match_tag) 1454 if (strlcpy(r.match_tagname, $8.match_tag, 1455 PF_TAG_NAME_SIZE) >= PF_TAG_NAME_SIZE) { 1456 yyerror("tag too long, max %u chars", 1457 PF_TAG_NAME_SIZE - 1); 1458 YYERROR; 1459 } 1460 r.match_tag_not = $8.match_tag_not; 1461 r.rtableid = $8.rtableid; 1462 1463 expand_rule(&r, $4, NULL, $6, $7.src_os, 1464 $7.src.host, $7.src.port, $7.dst.host, $7.dst.port, 1465 NULL, NULL, NULL, NULL, ""); 1466 } 1467 ; 1468 1469 scrub_opts : { 1470 bzero(&scrub_opts, sizeof scrub_opts); 1471 scrub_opts.rtableid = -1; 1472 } 1473 scrub_opts_l 1474 { $$ = scrub_opts; } 1475 | /* empty */ { 1476 bzero(&scrub_opts, sizeof scrub_opts); 1477 scrub_opts.rtableid = -1; 1478 $$ = scrub_opts; 1479 } 1480 ; 1481 1482 scrub_opts_l : scrub_opts_l comma scrub_opt 1483 | scrub_opt 1484 ; 1485 1486 scrub_opt : NODF { 1487 if (scrub_opts.nodf) { 1488 yyerror("no-df cannot be respecified"); 1489 YYERROR; 1490 } 1491 scrub_opts.nodf = 1; 1492 } 1493 | MINTTL NUMBER { 1494 if (scrub_opts.marker & FOM_MINTTL) { 1495 yyerror("min-ttl cannot be respecified"); 1496 YYERROR; 1497 } 1498 if ($2 < 0 || $2 > 255) { 1499 yyerror("illegal min-ttl value %d", $2); 1500 YYERROR; 1501 } 1502 scrub_opts.marker |= FOM_MINTTL; 1503 scrub_opts.minttl = $2; 1504 } 1505 | MAXMSS NUMBER { 1506 if (scrub_opts.marker & FOM_MAXMSS) { 1507 yyerror("max-mss cannot be respecified"); 1508 YYERROR; 1509 } 1510 if ($2 < 0 || $2 > 65535) { 1511 yyerror("illegal max-mss value %d", $2); 1512 YYERROR; 1513 } 1514 scrub_opts.marker |= FOM_MAXMSS; 1515 scrub_opts.maxmss = $2; 1516 } 1517 | SETTOS tos { 1518 if (scrub_opts.marker & FOM_SETTOS) { 1519 yyerror("set-tos cannot be respecified"); 1520 YYERROR; 1521 } 1522 scrub_opts.marker |= FOM_SETTOS; 1523 scrub_opts.settos = $2; 1524 } 1525 | fragcache { 1526 if (scrub_opts.marker & FOM_FRAGCACHE) { 1527 yyerror("fragcache cannot be respecified"); 1528 YYERROR; 1529 } 1530 scrub_opts.marker |= FOM_FRAGCACHE; 1531 scrub_opts.fragcache = $1; 1532 } 1533 | REASSEMBLE STRING { 1534 if (strcasecmp($2, "tcp") != 0) { 1535 yyerror("scrub reassemble supports only tcp, " 1536 "not '%s'", $2); 1537 free($2); 1538 YYERROR; 1539 } 1540 free($2); 1541 if (scrub_opts.reassemble_tcp) { 1542 yyerror("reassemble tcp cannot be respecified"); 1543 YYERROR; 1544 } 1545 scrub_opts.reassemble_tcp = 1; 1546 } 1547 | RANDOMID { 1548 if (scrub_opts.randomid) { 1549 yyerror("random-id cannot be respecified"); 1550 YYERROR; 1551 } 1552 scrub_opts.randomid = 1; 1553 } 1554 | RTABLE NUMBER { 1555 if ($2 < 0 || $2 > rt_tableid_max()) { 1556 yyerror("invalid rtable id"); 1557 YYERROR; 1558 } 1559 scrub_opts.rtableid = $2; 1560 } 1561 | not TAGGED string { 1562 scrub_opts.match_tag = $3; 1563 scrub_opts.match_tag_not = $1; 1564 } 1565 ; 1566 1567 fragcache : FRAGMENT REASSEMBLE { $$ = 0; /* default */ } 1568 | FRAGMENT NO REASSEMBLE { $$ = PFRULE_FRAGMENT_NOREASS; } 1569 ; 1570 1571 antispoof : ANTISPOOF logquick antispoof_ifspc af antispoof_opts { 1572 struct pfctl_rule r; 1573 struct node_host *h = NULL, *hh; 1574 struct node_if *i, *j; 1575 1576 if (check_rulestate(PFCTL_STATE_FILTER)) 1577 YYERROR; 1578 1579 for (i = $3; i; i = i->next) { 1580 bzero(&r, sizeof(r)); 1581 1582 r.action = PF_DROP; 1583 r.direction = PF_IN; 1584 r.log = $2.log; 1585 r.logif = $2.logif; 1586 r.quick = $2.quick; 1587 r.af = $4; 1588 r.ridentifier = $5.ridentifier; 1589 if (rule_label(&r, $5.label)) 1590 YYERROR; 1591 r.rtableid = $5.rtableid; 1592 j = calloc(1, sizeof(struct node_if)); 1593 if (j == NULL) 1594 err(1, "antispoof: calloc"); 1595 if (strlcpy(j->ifname, i->ifname, 1596 sizeof(j->ifname)) >= sizeof(j->ifname)) { 1597 free(j); 1598 yyerror("interface name too long"); 1599 YYERROR; 1600 } 1601 j->not = 1; 1602 if (i->dynamic) { 1603 h = calloc(1, sizeof(*h)); 1604 if (h == NULL) 1605 err(1, "address: calloc"); 1606 h->addr.type = PF_ADDR_DYNIFTL; 1607 set_ipmask(h, 128); 1608 if (strlcpy(h->addr.v.ifname, i->ifname, 1609 sizeof(h->addr.v.ifname)) >= 1610 sizeof(h->addr.v.ifname)) { 1611 free(h); 1612 yyerror( 1613 "interface name too long"); 1614 YYERROR; 1615 } 1616 hh = malloc(sizeof(*hh)); 1617 if (hh == NULL) 1618 err(1, "address: malloc"); 1619 bcopy(h, hh, sizeof(*hh)); 1620 h->addr.iflags = PFI_AFLAG_NETWORK; 1621 } else { 1622 h = ifa_lookup(j->ifname, 1623 PFI_AFLAG_NETWORK); 1624 hh = NULL; 1625 } 1626 1627 if (h != NULL) 1628 expand_rule(&r, j, NULL, NULL, NULL, h, 1629 NULL, NULL, NULL, NULL, NULL, 1630 NULL, NULL, ""); 1631 1632 if ((i->ifa_flags & IFF_LOOPBACK) == 0) { 1633 bzero(&r, sizeof(r)); 1634 1635 r.action = PF_DROP; 1636 r.direction = PF_IN; 1637 r.log = $2.log; 1638 r.logif = $2.logif; 1639 r.quick = $2.quick; 1640 r.af = $4; 1641 r.ridentifier = $5.ridentifier; 1642 if (rule_label(&r, $5.label)) 1643 YYERROR; 1644 r.rtableid = $5.rtableid; 1645 if (hh != NULL) 1646 h = hh; 1647 else 1648 h = ifa_lookup(i->ifname, 0); 1649 if (h != NULL) 1650 expand_rule(&r, NULL, NULL, 1651 NULL, NULL, h, NULL, NULL, 1652 NULL, NULL, NULL, NULL, NULL, ""); 1653 } else 1654 free(hh); 1655 } 1656 for (int i = 0; i < PF_RULE_MAX_LABEL_COUNT; i++) 1657 free($5.label[i]); 1658 } 1659 ; 1660 1661 antispoof_ifspc : FOR antispoof_if { $$ = $2; } 1662 | FOR '{' optnl antispoof_iflst '}' { $$ = $4; } 1663 ; 1664 1665 antispoof_iflst : antispoof_if optnl { $$ = $1; } 1666 | antispoof_iflst comma antispoof_if optnl { 1667 $1->tail->next = $3; 1668 $1->tail = $3; 1669 $$ = $1; 1670 } 1671 ; 1672 1673 antispoof_if : if_item { $$ = $1; } 1674 | '(' if_item ')' { 1675 $2->dynamic = 1; 1676 $$ = $2; 1677 } 1678 ; 1679 1680 antispoof_opts : { 1681 bzero(&antispoof_opts, sizeof antispoof_opts); 1682 antispoof_opts.rtableid = -1; 1683 } 1684 antispoof_opts_l 1685 { $$ = antispoof_opts; } 1686 | /* empty */ { 1687 bzero(&antispoof_opts, sizeof antispoof_opts); 1688 antispoof_opts.rtableid = -1; 1689 $$ = antispoof_opts; 1690 } 1691 ; 1692 1693 antispoof_opts_l : antispoof_opts_l antispoof_opt 1694 | antispoof_opt 1695 ; 1696 1697 antispoof_opt : label { 1698 if (antispoof_opts.labelcount >= PF_RULE_MAX_LABEL_COUNT) { 1699 yyerror("label can only be used %d times", PF_RULE_MAX_LABEL_COUNT); 1700 YYERROR; 1701 } 1702 antispoof_opts.label[antispoof_opts.labelcount++] = $1; 1703 } 1704 | RIDENTIFIER number { 1705 antispoof_opts.ridentifier = $2; 1706 } 1707 | RTABLE NUMBER { 1708 if ($2 < 0 || $2 > rt_tableid_max()) { 1709 yyerror("invalid rtable id"); 1710 YYERROR; 1711 } 1712 antispoof_opts.rtableid = $2; 1713 } 1714 ; 1715 1716 not : '!' { $$ = 1; } 1717 | /* empty */ { $$ = 0; } 1718 ; 1719 1720 tabledef : TABLE '<' STRING '>' table_opts { 1721 struct node_host *h, *nh; 1722 struct node_tinit *ti, *nti; 1723 1724 if (strlen($3) >= PF_TABLE_NAME_SIZE) { 1725 yyerror("table name too long, max %d chars", 1726 PF_TABLE_NAME_SIZE - 1); 1727 free($3); 1728 YYERROR; 1729 } 1730 if (pf->loadopt & PFCTL_FLAG_TABLE) 1731 if (process_tabledef($3, &$5)) { 1732 free($3); 1733 YYERROR; 1734 } 1735 free($3); 1736 for (ti = SIMPLEQ_FIRST(&$5.init_nodes); 1737 ti != SIMPLEQ_END(&$5.init_nodes); ti = nti) { 1738 if (ti->file) 1739 free(ti->file); 1740 for (h = ti->host; h != NULL; h = nh) { 1741 nh = h->next; 1742 free(h); 1743 } 1744 nti = SIMPLEQ_NEXT(ti, entries); 1745 free(ti); 1746 } 1747 } 1748 ; 1749 1750 table_opts : { 1751 bzero(&table_opts, sizeof table_opts); 1752 SIMPLEQ_INIT(&table_opts.init_nodes); 1753 } 1754 table_opts_l 1755 { $$ = table_opts; } 1756 | /* empty */ 1757 { 1758 bzero(&table_opts, sizeof table_opts); 1759 SIMPLEQ_INIT(&table_opts.init_nodes); 1760 $$ = table_opts; 1761 } 1762 ; 1763 1764 table_opts_l : table_opts_l table_opt 1765 | table_opt 1766 ; 1767 1768 table_opt : STRING { 1769 if (!strcmp($1, "const")) 1770 table_opts.flags |= PFR_TFLAG_CONST; 1771 else if (!strcmp($1, "persist")) 1772 table_opts.flags |= PFR_TFLAG_PERSIST; 1773 else if (!strcmp($1, "counters")) 1774 table_opts.flags |= PFR_TFLAG_COUNTERS; 1775 else { 1776 yyerror("invalid table option '%s'", $1); 1777 free($1); 1778 YYERROR; 1779 } 1780 free($1); 1781 } 1782 | '{' optnl '}' { table_opts.init_addr = 1; } 1783 | '{' optnl host_list '}' { 1784 struct node_host *n; 1785 struct node_tinit *ti; 1786 1787 for (n = $3; n != NULL; n = n->next) { 1788 switch (n->addr.type) { 1789 case PF_ADDR_ADDRMASK: 1790 continue; /* ok */ 1791 case PF_ADDR_RANGE: 1792 yyerror("address ranges are not " 1793 "permitted inside tables"); 1794 break; 1795 case PF_ADDR_DYNIFTL: 1796 yyerror("dynamic addresses are not " 1797 "permitted inside tables"); 1798 break; 1799 case PF_ADDR_TABLE: 1800 yyerror("tables cannot contain tables"); 1801 break; 1802 case PF_ADDR_NOROUTE: 1803 yyerror("\"no-route\" is not permitted " 1804 "inside tables"); 1805 break; 1806 case PF_ADDR_URPFFAILED: 1807 yyerror("\"urpf-failed\" is not " 1808 "permitted inside tables"); 1809 break; 1810 default: 1811 yyerror("unknown address type %d", 1812 n->addr.type); 1813 } 1814 YYERROR; 1815 } 1816 if (!(ti = calloc(1, sizeof(*ti)))) 1817 err(1, "table_opt: calloc"); 1818 ti->host = $3; 1819 SIMPLEQ_INSERT_TAIL(&table_opts.init_nodes, ti, 1820 entries); 1821 table_opts.init_addr = 1; 1822 } 1823 | FILENAME STRING { 1824 struct node_tinit *ti; 1825 1826 if (!(ti = calloc(1, sizeof(*ti)))) 1827 err(1, "table_opt: calloc"); 1828 ti->file = $2; 1829 SIMPLEQ_INSERT_TAIL(&table_opts.init_nodes, ti, 1830 entries); 1831 table_opts.init_addr = 1; 1832 } 1833 ; 1834 1835 altqif : ALTQ interface queue_opts QUEUE qassign { 1836 struct pf_altq a; 1837 1838 if (check_rulestate(PFCTL_STATE_QUEUE)) 1839 YYERROR; 1840 1841 memset(&a, 0, sizeof(a)); 1842 if ($3.scheduler.qtype == ALTQT_NONE) { 1843 yyerror("no scheduler specified!"); 1844 YYERROR; 1845 } 1846 a.scheduler = $3.scheduler.qtype; 1847 a.qlimit = $3.qlimit; 1848 a.tbrsize = $3.tbrsize; 1849 if ($5 == NULL && $3.scheduler.qtype != ALTQT_CODEL) { 1850 yyerror("no child queues specified"); 1851 YYERROR; 1852 } 1853 if (expand_altq(&a, $2, $5, $3.queue_bwspec, 1854 &$3.scheduler)) 1855 YYERROR; 1856 } 1857 ; 1858 1859 queuespec : QUEUE STRING interface queue_opts qassign { 1860 struct pf_altq a; 1861 1862 if (check_rulestate(PFCTL_STATE_QUEUE)) { 1863 free($2); 1864 YYERROR; 1865 } 1866 1867 memset(&a, 0, sizeof(a)); 1868 1869 if (strlcpy(a.qname, $2, sizeof(a.qname)) >= 1870 sizeof(a.qname)) { 1871 yyerror("queue name too long (max " 1872 "%d chars)", PF_QNAME_SIZE-1); 1873 free($2); 1874 YYERROR; 1875 } 1876 free($2); 1877 if ($4.tbrsize) { 1878 yyerror("cannot specify tbrsize for queue"); 1879 YYERROR; 1880 } 1881 if ($4.priority > 255) { 1882 yyerror("priority out of range: max 255"); 1883 YYERROR; 1884 } 1885 a.priority = $4.priority; 1886 a.qlimit = $4.qlimit; 1887 a.scheduler = $4.scheduler.qtype; 1888 if (expand_queue(&a, $3, $5, $4.queue_bwspec, 1889 &$4.scheduler)) { 1890 yyerror("errors in queue definition"); 1891 YYERROR; 1892 } 1893 } 1894 ; 1895 1896 queue_opts : { 1897 bzero(&queue_opts, sizeof queue_opts); 1898 queue_opts.priority = DEFAULT_PRIORITY; 1899 queue_opts.qlimit = DEFAULT_QLIMIT; 1900 queue_opts.scheduler.qtype = ALTQT_NONE; 1901 queue_opts.queue_bwspec.bw_percent = 100; 1902 } 1903 queue_opts_l 1904 { $$ = queue_opts; } 1905 | /* empty */ { 1906 bzero(&queue_opts, sizeof queue_opts); 1907 queue_opts.priority = DEFAULT_PRIORITY; 1908 queue_opts.qlimit = DEFAULT_QLIMIT; 1909 queue_opts.scheduler.qtype = ALTQT_NONE; 1910 queue_opts.queue_bwspec.bw_percent = 100; 1911 $$ = queue_opts; 1912 } 1913 ; 1914 1915 queue_opts_l : queue_opts_l queue_opt 1916 | queue_opt 1917 ; 1918 1919 queue_opt : BANDWIDTH bandwidth { 1920 if (queue_opts.marker & QOM_BWSPEC) { 1921 yyerror("bandwidth cannot be respecified"); 1922 YYERROR; 1923 } 1924 queue_opts.marker |= QOM_BWSPEC; 1925 queue_opts.queue_bwspec = $2; 1926 } 1927 | PRIORITY NUMBER { 1928 if (queue_opts.marker & QOM_PRIORITY) { 1929 yyerror("priority cannot be respecified"); 1930 YYERROR; 1931 } 1932 if ($2 < 0 || $2 > 255) { 1933 yyerror("priority out of range: max 255"); 1934 YYERROR; 1935 } 1936 queue_opts.marker |= QOM_PRIORITY; 1937 queue_opts.priority = $2; 1938 } 1939 | QLIMIT NUMBER { 1940 if (queue_opts.marker & QOM_QLIMIT) { 1941 yyerror("qlimit cannot be respecified"); 1942 YYERROR; 1943 } 1944 if ($2 < 0 || $2 > 65535) { 1945 yyerror("qlimit out of range: max 65535"); 1946 YYERROR; 1947 } 1948 queue_opts.marker |= QOM_QLIMIT; 1949 queue_opts.qlimit = $2; 1950 } 1951 | scheduler { 1952 if (queue_opts.marker & QOM_SCHEDULER) { 1953 yyerror("scheduler cannot be respecified"); 1954 YYERROR; 1955 } 1956 queue_opts.marker |= QOM_SCHEDULER; 1957 queue_opts.scheduler = $1; 1958 } 1959 | TBRSIZE NUMBER { 1960 if (queue_opts.marker & QOM_TBRSIZE) { 1961 yyerror("tbrsize cannot be respecified"); 1962 YYERROR; 1963 } 1964 if ($2 < 0 || $2 > UINT_MAX) { 1965 yyerror("tbrsize too big: max %u", UINT_MAX); 1966 YYERROR; 1967 } 1968 queue_opts.marker |= QOM_TBRSIZE; 1969 queue_opts.tbrsize = $2; 1970 } 1971 ; 1972 1973 bandwidth : STRING { 1974 double bps; 1975 char *cp; 1976 1977 $$.bw_percent = 0; 1978 1979 bps = strtod($1, &cp); 1980 if (cp != NULL) { 1981 if (strlen(cp) > 1) { 1982 char *cu = cp + 1; 1983 if (!strcmp(cu, "Bit") || 1984 !strcmp(cu, "B") || 1985 !strcmp(cu, "bit") || 1986 !strcmp(cu, "b")) { 1987 *cu = 0; 1988 } 1989 } 1990 if (!strcmp(cp, "b")) 1991 ; /* nothing */ 1992 else if (!strcmp(cp, "K")) 1993 bps *= 1000; 1994 else if (!strcmp(cp, "M")) 1995 bps *= 1000 * 1000; 1996 else if (!strcmp(cp, "G")) 1997 bps *= 1000 * 1000 * 1000; 1998 else if (!strcmp(cp, "%")) { 1999 if (bps < 0 || bps > 100) { 2000 yyerror("bandwidth spec " 2001 "out of range"); 2002 free($1); 2003 YYERROR; 2004 } 2005 $$.bw_percent = bps; 2006 bps = 0; 2007 } else { 2008 yyerror("unknown unit %s", cp); 2009 free($1); 2010 YYERROR; 2011 } 2012 } 2013 free($1); 2014 $$.bw_absolute = (u_int64_t)bps; 2015 } 2016 | NUMBER { 2017 if ($1 < 0 || $1 >= LLONG_MAX) { 2018 yyerror("bandwidth number too big"); 2019 YYERROR; 2020 } 2021 $$.bw_percent = 0; 2022 $$.bw_absolute = $1; 2023 } 2024 ; 2025 2026 scheduler : CBQ { 2027 $$.qtype = ALTQT_CBQ; 2028 $$.data.cbq_opts.flags = 0; 2029 } 2030 | CBQ '(' cbqflags_list ')' { 2031 $$.qtype = ALTQT_CBQ; 2032 $$.data.cbq_opts.flags = $3; 2033 } 2034 | PRIQ { 2035 $$.qtype = ALTQT_PRIQ; 2036 $$.data.priq_opts.flags = 0; 2037 } 2038 | PRIQ '(' priqflags_list ')' { 2039 $$.qtype = ALTQT_PRIQ; 2040 $$.data.priq_opts.flags = $3; 2041 } 2042 | HFSC { 2043 $$.qtype = ALTQT_HFSC; 2044 bzero(&$$.data.hfsc_opts, 2045 sizeof(struct node_hfsc_opts)); 2046 } 2047 | HFSC '(' hfsc_opts ')' { 2048 $$.qtype = ALTQT_HFSC; 2049 $$.data.hfsc_opts = $3; 2050 } 2051 | FAIRQ { 2052 $$.qtype = ALTQT_FAIRQ; 2053 bzero(&$$.data.fairq_opts, 2054 sizeof(struct node_fairq_opts)); 2055 } 2056 | FAIRQ '(' fairq_opts ')' { 2057 $$.qtype = ALTQT_FAIRQ; 2058 $$.data.fairq_opts = $3; 2059 } 2060 | CODEL { 2061 $$.qtype = ALTQT_CODEL; 2062 bzero(&$$.data.codel_opts, 2063 sizeof(struct codel_opts)); 2064 } 2065 | CODEL '(' codel_opts ')' { 2066 $$.qtype = ALTQT_CODEL; 2067 $$.data.codel_opts = $3; 2068 } 2069 ; 2070 2071 cbqflags_list : cbqflags_item { $$ |= $1; } 2072 | cbqflags_list comma cbqflags_item { $$ |= $3; } 2073 ; 2074 2075 cbqflags_item : STRING { 2076 if (!strcmp($1, "default")) 2077 $$ = CBQCLF_DEFCLASS; 2078 else if (!strcmp($1, "borrow")) 2079 $$ = CBQCLF_BORROW; 2080 else if (!strcmp($1, "red")) 2081 $$ = CBQCLF_RED; 2082 else if (!strcmp($1, "ecn")) 2083 $$ = CBQCLF_RED|CBQCLF_ECN; 2084 else if (!strcmp($1, "rio")) 2085 $$ = CBQCLF_RIO; 2086 else if (!strcmp($1, "codel")) 2087 $$ = CBQCLF_CODEL; 2088 else { 2089 yyerror("unknown cbq flag \"%s\"", $1); 2090 free($1); 2091 YYERROR; 2092 } 2093 free($1); 2094 } 2095 ; 2096 2097 priqflags_list : priqflags_item { $$ |= $1; } 2098 | priqflags_list comma priqflags_item { $$ |= $3; } 2099 ; 2100 2101 priqflags_item : STRING { 2102 if (!strcmp($1, "default")) 2103 $$ = PRCF_DEFAULTCLASS; 2104 else if (!strcmp($1, "red")) 2105 $$ = PRCF_RED; 2106 else if (!strcmp($1, "ecn")) 2107 $$ = PRCF_RED|PRCF_ECN; 2108 else if (!strcmp($1, "rio")) 2109 $$ = PRCF_RIO; 2110 else if (!strcmp($1, "codel")) 2111 $$ = PRCF_CODEL; 2112 else { 2113 yyerror("unknown priq flag \"%s\"", $1); 2114 free($1); 2115 YYERROR; 2116 } 2117 free($1); 2118 } 2119 ; 2120 2121 hfsc_opts : { 2122 bzero(&hfsc_opts, 2123 sizeof(struct node_hfsc_opts)); 2124 } 2125 hfscopts_list { 2126 $$ = hfsc_opts; 2127 } 2128 ; 2129 2130 hfscopts_list : hfscopts_item 2131 | hfscopts_list comma hfscopts_item 2132 ; 2133 2134 hfscopts_item : LINKSHARE bandwidth { 2135 if (hfsc_opts.linkshare.used) { 2136 yyerror("linkshare already specified"); 2137 YYERROR; 2138 } 2139 hfsc_opts.linkshare.m2 = $2; 2140 hfsc_opts.linkshare.used = 1; 2141 } 2142 | LINKSHARE '(' bandwidth comma NUMBER comma bandwidth ')' 2143 { 2144 if ($5 < 0 || $5 > INT_MAX) { 2145 yyerror("timing in curve out of range"); 2146 YYERROR; 2147 } 2148 if (hfsc_opts.linkshare.used) { 2149 yyerror("linkshare already specified"); 2150 YYERROR; 2151 } 2152 hfsc_opts.linkshare.m1 = $3; 2153 hfsc_opts.linkshare.d = $5; 2154 hfsc_opts.linkshare.m2 = $7; 2155 hfsc_opts.linkshare.used = 1; 2156 } 2157 | REALTIME bandwidth { 2158 if (hfsc_opts.realtime.used) { 2159 yyerror("realtime already specified"); 2160 YYERROR; 2161 } 2162 hfsc_opts.realtime.m2 = $2; 2163 hfsc_opts.realtime.used = 1; 2164 } 2165 | REALTIME '(' bandwidth comma NUMBER comma bandwidth ')' 2166 { 2167 if ($5 < 0 || $5 > INT_MAX) { 2168 yyerror("timing in curve out of range"); 2169 YYERROR; 2170 } 2171 if (hfsc_opts.realtime.used) { 2172 yyerror("realtime already specified"); 2173 YYERROR; 2174 } 2175 hfsc_opts.realtime.m1 = $3; 2176 hfsc_opts.realtime.d = $5; 2177 hfsc_opts.realtime.m2 = $7; 2178 hfsc_opts.realtime.used = 1; 2179 } 2180 | UPPERLIMIT bandwidth { 2181 if (hfsc_opts.upperlimit.used) { 2182 yyerror("upperlimit already specified"); 2183 YYERROR; 2184 } 2185 hfsc_opts.upperlimit.m2 = $2; 2186 hfsc_opts.upperlimit.used = 1; 2187 } 2188 | UPPERLIMIT '(' bandwidth comma NUMBER comma bandwidth ')' 2189 { 2190 if ($5 < 0 || $5 > INT_MAX) { 2191 yyerror("timing in curve out of range"); 2192 YYERROR; 2193 } 2194 if (hfsc_opts.upperlimit.used) { 2195 yyerror("upperlimit already specified"); 2196 YYERROR; 2197 } 2198 hfsc_opts.upperlimit.m1 = $3; 2199 hfsc_opts.upperlimit.d = $5; 2200 hfsc_opts.upperlimit.m2 = $7; 2201 hfsc_opts.upperlimit.used = 1; 2202 } 2203 | STRING { 2204 if (!strcmp($1, "default")) 2205 hfsc_opts.flags |= HFCF_DEFAULTCLASS; 2206 else if (!strcmp($1, "red")) 2207 hfsc_opts.flags |= HFCF_RED; 2208 else if (!strcmp($1, "ecn")) 2209 hfsc_opts.flags |= HFCF_RED|HFCF_ECN; 2210 else if (!strcmp($1, "rio")) 2211 hfsc_opts.flags |= HFCF_RIO; 2212 else if (!strcmp($1, "codel")) 2213 hfsc_opts.flags |= HFCF_CODEL; 2214 else { 2215 yyerror("unknown hfsc flag \"%s\"", $1); 2216 free($1); 2217 YYERROR; 2218 } 2219 free($1); 2220 } 2221 ; 2222 2223 fairq_opts : { 2224 bzero(&fairq_opts, 2225 sizeof(struct node_fairq_opts)); 2226 } 2227 fairqopts_list { 2228 $$ = fairq_opts; 2229 } 2230 ; 2231 2232 fairqopts_list : fairqopts_item 2233 | fairqopts_list comma fairqopts_item 2234 ; 2235 2236 fairqopts_item : LINKSHARE bandwidth { 2237 if (fairq_opts.linkshare.used) { 2238 yyerror("linkshare already specified"); 2239 YYERROR; 2240 } 2241 fairq_opts.linkshare.m2 = $2; 2242 fairq_opts.linkshare.used = 1; 2243 } 2244 | LINKSHARE '(' bandwidth number bandwidth ')' { 2245 if (fairq_opts.linkshare.used) { 2246 yyerror("linkshare already specified"); 2247 YYERROR; 2248 } 2249 fairq_opts.linkshare.m1 = $3; 2250 fairq_opts.linkshare.d = $4; 2251 fairq_opts.linkshare.m2 = $5; 2252 fairq_opts.linkshare.used = 1; 2253 } 2254 | HOGS bandwidth { 2255 fairq_opts.hogs_bw = $2; 2256 } 2257 | BUCKETS number { 2258 fairq_opts.nbuckets = $2; 2259 } 2260 | STRING { 2261 if (!strcmp($1, "default")) 2262 fairq_opts.flags |= FARF_DEFAULTCLASS; 2263 else if (!strcmp($1, "red")) 2264 fairq_opts.flags |= FARF_RED; 2265 else if (!strcmp($1, "ecn")) 2266 fairq_opts.flags |= FARF_RED|FARF_ECN; 2267 else if (!strcmp($1, "rio")) 2268 fairq_opts.flags |= FARF_RIO; 2269 else if (!strcmp($1, "codel")) 2270 fairq_opts.flags |= FARF_CODEL; 2271 else { 2272 yyerror("unknown fairq flag \"%s\"", $1); 2273 free($1); 2274 YYERROR; 2275 } 2276 free($1); 2277 } 2278 ; 2279 2280 codel_opts : { 2281 bzero(&codel_opts, 2282 sizeof(struct codel_opts)); 2283 } 2284 codelopts_list { 2285 $$ = codel_opts; 2286 } 2287 ; 2288 2289 codelopts_list : codelopts_item 2290 | codelopts_list comma codelopts_item 2291 ; 2292 2293 codelopts_item : INTERVAL number { 2294 if (codel_opts.interval) { 2295 yyerror("interval already specified"); 2296 YYERROR; 2297 } 2298 codel_opts.interval = $2; 2299 } 2300 | TARGET number { 2301 if (codel_opts.target) { 2302 yyerror("target already specified"); 2303 YYERROR; 2304 } 2305 codel_opts.target = $2; 2306 } 2307 | STRING { 2308 if (!strcmp($1, "ecn")) 2309 codel_opts.ecn = 1; 2310 else { 2311 yyerror("unknown codel option \"%s\"", $1); 2312 free($1); 2313 YYERROR; 2314 } 2315 free($1); 2316 } 2317 ; 2318 2319 qassign : /* empty */ { $$ = NULL; } 2320 | qassign_item { $$ = $1; } 2321 | '{' optnl qassign_list '}' { $$ = $3; } 2322 ; 2323 2324 qassign_list : qassign_item optnl { $$ = $1; } 2325 | qassign_list comma qassign_item optnl { 2326 $1->tail->next = $3; 2327 $1->tail = $3; 2328 $$ = $1; 2329 } 2330 ; 2331 2332 qassign_item : STRING { 2333 $$ = calloc(1, sizeof(struct node_queue)); 2334 if ($$ == NULL) 2335 err(1, "qassign_item: calloc"); 2336 if (strlcpy($$->queue, $1, sizeof($$->queue)) >= 2337 sizeof($$->queue)) { 2338 yyerror("queue name '%s' too long (max " 2339 "%d chars)", $1, sizeof($$->queue)-1); 2340 free($1); 2341 free($$); 2342 YYERROR; 2343 } 2344 free($1); 2345 $$->next = NULL; 2346 $$->tail = $$; 2347 } 2348 ; 2349 2350 pfrule : action dir logquick interface route af proto fromto 2351 filter_opts 2352 { 2353 struct pfctl_rule r; 2354 struct node_state_opt *o; 2355 struct node_proto *proto; 2356 int srctrack = 0; 2357 int statelock = 0; 2358 int adaptive = 0; 2359 int defaults = 0; 2360 2361 if (check_rulestate(PFCTL_STATE_FILTER)) 2362 YYERROR; 2363 2364 memset(&r, 0, sizeof(r)); 2365 2366 r.action = $1.b1; 2367 switch ($1.b2) { 2368 case PFRULE_RETURNRST: 2369 r.rule_flag |= PFRULE_RETURNRST; 2370 r.return_ttl = $1.w; 2371 break; 2372 case PFRULE_RETURNICMP: 2373 r.rule_flag |= PFRULE_RETURNICMP; 2374 r.return_icmp = $1.w; 2375 r.return_icmp6 = $1.w2; 2376 break; 2377 case PFRULE_RETURN: 2378 r.rule_flag |= PFRULE_RETURN; 2379 r.return_icmp = $1.w; 2380 r.return_icmp6 = $1.w2; 2381 break; 2382 } 2383 r.direction = $2; 2384 r.log = $3.log; 2385 r.logif = $3.logif; 2386 r.quick = $3.quick; 2387 r.prob = $9.prob; 2388 r.rtableid = $9.rtableid; 2389 2390 if ($9.nodf) 2391 r.scrub_flags |= PFSTATE_NODF; 2392 if ($9.randomid) 2393 r.scrub_flags |= PFSTATE_RANDOMID; 2394 if ($9.minttl) 2395 r.min_ttl = $9.minttl; 2396 if ($9.max_mss) 2397 r.max_mss = $9.max_mss; 2398 if ($9.marker & FOM_SETTOS) { 2399 r.scrub_flags |= PFSTATE_SETTOS; 2400 r.set_tos = $9.settos; 2401 } 2402 if ($9.marker & FOM_SCRUB_TCP) 2403 r.scrub_flags |= PFSTATE_SCRUB_TCP; 2404 2405 if ($9.marker & FOM_PRIO) { 2406 if ($9.prio == 0) 2407 r.prio = PF_PRIO_ZERO; 2408 else 2409 r.prio = $9.prio; 2410 } 2411 if ($9.marker & FOM_SETPRIO) { 2412 r.set_prio[0] = $9.set_prio[0]; 2413 r.set_prio[1] = $9.set_prio[1]; 2414 r.scrub_flags |= PFSTATE_SETPRIO; 2415 } 2416 2417 r.af = $6; 2418 if ($9.tag) 2419 if (strlcpy(r.tagname, $9.tag, 2420 PF_TAG_NAME_SIZE) >= PF_TAG_NAME_SIZE) { 2421 yyerror("tag too long, max %u chars", 2422 PF_TAG_NAME_SIZE - 1); 2423 YYERROR; 2424 } 2425 if ($9.match_tag) 2426 if (strlcpy(r.match_tagname, $9.match_tag, 2427 PF_TAG_NAME_SIZE) >= PF_TAG_NAME_SIZE) { 2428 yyerror("tag too long, max %u chars", 2429 PF_TAG_NAME_SIZE - 1); 2430 YYERROR; 2431 } 2432 r.match_tag_not = $9.match_tag_not; 2433 if (rule_label(&r, $9.label)) 2434 YYERROR; 2435 for (int i = 0; i < PF_RULE_MAX_LABEL_COUNT; i++) 2436 free($9.label[i]); 2437 r.ridentifier = $9.ridentifier; 2438 r.flags = $9.flags.b1; 2439 r.flagset = $9.flags.b2; 2440 if (($9.flags.b1 & $9.flags.b2) != $9.flags.b1) { 2441 yyerror("flags always false"); 2442 YYERROR; 2443 } 2444 if ($9.flags.b1 || $9.flags.b2 || $8.src_os) { 2445 for (proto = $7; proto != NULL && 2446 proto->proto != IPPROTO_TCP; 2447 proto = proto->next) 2448 ; /* nothing */ 2449 if (proto == NULL && $7 != NULL) { 2450 if ($9.flags.b1 || $9.flags.b2) 2451 yyerror( 2452 "flags only apply to tcp"); 2453 if ($8.src_os) 2454 yyerror( 2455 "OS fingerprinting only " 2456 "apply to tcp"); 2457 YYERROR; 2458 } 2459 #if 0 2460 if (($9.flags.b1 & parse_flags("S")) == 0 && 2461 $8.src_os) { 2462 yyerror("OS fingerprinting requires " 2463 "the SYN TCP flag (flags S/SA)"); 2464 YYERROR; 2465 } 2466 #endif 2467 } 2468 2469 r.tos = $9.tos; 2470 r.keep_state = $9.keep.action; 2471 o = $9.keep.options; 2472 2473 /* 'keep state' by default on pass rules. */ 2474 if (!r.keep_state && !r.action && 2475 !($9.marker & FOM_KEEP)) { 2476 r.keep_state = PF_STATE_NORMAL; 2477 o = keep_state_defaults; 2478 defaults = 1; 2479 } 2480 2481 while (o) { 2482 struct node_state_opt *p = o; 2483 2484 switch (o->type) { 2485 case PF_STATE_OPT_MAX: 2486 if (r.max_states) { 2487 yyerror("state option 'max' " 2488 "multiple definitions"); 2489 YYERROR; 2490 } 2491 r.max_states = o->data.max_states; 2492 break; 2493 case PF_STATE_OPT_NOSYNC: 2494 if (r.rule_flag & PFRULE_NOSYNC) { 2495 yyerror("state option 'sync' " 2496 "multiple definitions"); 2497 YYERROR; 2498 } 2499 r.rule_flag |= PFRULE_NOSYNC; 2500 break; 2501 case PF_STATE_OPT_SRCTRACK: 2502 if (srctrack) { 2503 yyerror("state option " 2504 "'source-track' " 2505 "multiple definitions"); 2506 YYERROR; 2507 } 2508 srctrack = o->data.src_track; 2509 r.rule_flag |= PFRULE_SRCTRACK; 2510 break; 2511 case PF_STATE_OPT_MAX_SRC_STATES: 2512 if (r.max_src_states) { 2513 yyerror("state option " 2514 "'max-src-states' " 2515 "multiple definitions"); 2516 YYERROR; 2517 } 2518 if (o->data.max_src_states == 0) { 2519 yyerror("'max-src-states' must " 2520 "be > 0"); 2521 YYERROR; 2522 } 2523 r.max_src_states = 2524 o->data.max_src_states; 2525 r.rule_flag |= PFRULE_SRCTRACK; 2526 break; 2527 case PF_STATE_OPT_OVERLOAD: 2528 if (r.overload_tblname[0]) { 2529 yyerror("multiple 'overload' " 2530 "table definitions"); 2531 YYERROR; 2532 } 2533 if (strlcpy(r.overload_tblname, 2534 o->data.overload.tblname, 2535 PF_TABLE_NAME_SIZE) >= 2536 PF_TABLE_NAME_SIZE) { 2537 yyerror("state option: " 2538 "strlcpy"); 2539 YYERROR; 2540 } 2541 r.flush = o->data.overload.flush; 2542 break; 2543 case PF_STATE_OPT_MAX_SRC_CONN: 2544 if (r.max_src_conn) { 2545 yyerror("state option " 2546 "'max-src-conn' " 2547 "multiple definitions"); 2548 YYERROR; 2549 } 2550 if (o->data.max_src_conn == 0) { 2551 yyerror("'max-src-conn' " 2552 "must be > 0"); 2553 YYERROR; 2554 } 2555 r.max_src_conn = 2556 o->data.max_src_conn; 2557 r.rule_flag |= PFRULE_SRCTRACK | 2558 PFRULE_RULESRCTRACK; 2559 break; 2560 case PF_STATE_OPT_MAX_SRC_CONN_RATE: 2561 if (r.max_src_conn_rate.limit) { 2562 yyerror("state option " 2563 "'max-src-conn-rate' " 2564 "multiple definitions"); 2565 YYERROR; 2566 } 2567 if (!o->data.max_src_conn_rate.limit || 2568 !o->data.max_src_conn_rate.seconds) { 2569 yyerror("'max-src-conn-rate' " 2570 "values must be > 0"); 2571 YYERROR; 2572 } 2573 if (o->data.max_src_conn_rate.limit > 2574 PF_THRESHOLD_MAX) { 2575 yyerror("'max-src-conn-rate' " 2576 "maximum rate must be < %u", 2577 PF_THRESHOLD_MAX); 2578 YYERROR; 2579 } 2580 r.max_src_conn_rate.limit = 2581 o->data.max_src_conn_rate.limit; 2582 r.max_src_conn_rate.seconds = 2583 o->data.max_src_conn_rate.seconds; 2584 r.rule_flag |= PFRULE_SRCTRACK | 2585 PFRULE_RULESRCTRACK; 2586 break; 2587 case PF_STATE_OPT_MAX_SRC_NODES: 2588 if (r.max_src_nodes) { 2589 yyerror("state option " 2590 "'max-src-nodes' " 2591 "multiple definitions"); 2592 YYERROR; 2593 } 2594 if (o->data.max_src_nodes == 0) { 2595 yyerror("'max-src-nodes' must " 2596 "be > 0"); 2597 YYERROR; 2598 } 2599 r.max_src_nodes = 2600 o->data.max_src_nodes; 2601 r.rule_flag |= PFRULE_SRCTRACK | 2602 PFRULE_RULESRCTRACK; 2603 break; 2604 case PF_STATE_OPT_STATELOCK: 2605 if (statelock) { 2606 yyerror("state locking option: " 2607 "multiple definitions"); 2608 YYERROR; 2609 } 2610 statelock = 1; 2611 r.rule_flag |= o->data.statelock; 2612 break; 2613 case PF_STATE_OPT_SLOPPY: 2614 if (r.rule_flag & PFRULE_STATESLOPPY) { 2615 yyerror("state sloppy option: " 2616 "multiple definitions"); 2617 YYERROR; 2618 } 2619 r.rule_flag |= PFRULE_STATESLOPPY; 2620 break; 2621 case PF_STATE_OPT_PFLOW: 2622 if (r.rule_flag & PFRULE_PFLOW) { 2623 yyerror("state pflow option: " 2624 "multiple definitions"); 2625 YYERROR; 2626 } 2627 r.rule_flag |= PFRULE_PFLOW; 2628 break; 2629 case PF_STATE_OPT_TIMEOUT: 2630 if (o->data.timeout.number == 2631 PFTM_ADAPTIVE_START || 2632 o->data.timeout.number == 2633 PFTM_ADAPTIVE_END) 2634 adaptive = 1; 2635 if (r.timeout[o->data.timeout.number]) { 2636 yyerror("state timeout %s " 2637 "multiple definitions", 2638 pf_timeouts[o->data. 2639 timeout.number].name); 2640 YYERROR; 2641 } 2642 r.timeout[o->data.timeout.number] = 2643 o->data.timeout.seconds; 2644 } 2645 o = o->next; 2646 if (!defaults) 2647 free(p); 2648 } 2649 2650 /* 'flags S/SA' by default on stateful rules */ 2651 if (!r.action && !r.flags && !r.flagset && 2652 !$9.fragment && !($9.marker & FOM_FLAGS) && 2653 r.keep_state) { 2654 r.flags = parse_flags("S"); 2655 r.flagset = parse_flags("SA"); 2656 } 2657 if (!adaptive && r.max_states) { 2658 r.timeout[PFTM_ADAPTIVE_START] = 2659 (r.max_states / 10) * 6; 2660 r.timeout[PFTM_ADAPTIVE_END] = 2661 (r.max_states / 10) * 12; 2662 } 2663 if (r.rule_flag & PFRULE_SRCTRACK) { 2664 if (srctrack == PF_SRCTRACK_GLOBAL && 2665 r.max_src_nodes) { 2666 yyerror("'max-src-nodes' is " 2667 "incompatible with " 2668 "'source-track global'"); 2669 YYERROR; 2670 } 2671 if (srctrack == PF_SRCTRACK_GLOBAL && 2672 r.max_src_conn) { 2673 yyerror("'max-src-conn' is " 2674 "incompatible with " 2675 "'source-track global'"); 2676 YYERROR; 2677 } 2678 if (srctrack == PF_SRCTRACK_GLOBAL && 2679 r.max_src_conn_rate.seconds) { 2680 yyerror("'max-src-conn-rate' is " 2681 "incompatible with " 2682 "'source-track global'"); 2683 YYERROR; 2684 } 2685 if (r.timeout[PFTM_SRC_NODE] < 2686 r.max_src_conn_rate.seconds) 2687 r.timeout[PFTM_SRC_NODE] = 2688 r.max_src_conn_rate.seconds; 2689 r.rule_flag |= PFRULE_SRCTRACK; 2690 if (srctrack == PF_SRCTRACK_RULE) 2691 r.rule_flag |= PFRULE_RULESRCTRACK; 2692 } 2693 if (r.keep_state && !statelock) 2694 r.rule_flag |= default_statelock; 2695 2696 if ($9.fragment) 2697 r.rule_flag |= PFRULE_FRAGMENT; 2698 r.allow_opts = $9.allowopts; 2699 2700 decide_address_family($8.src.host, &r.af); 2701 decide_address_family($8.dst.host, &r.af); 2702 2703 if ($5.rt) { 2704 if (!r.direction) { 2705 yyerror("direction must be explicit " 2706 "with rules that specify routing"); 2707 YYERROR; 2708 } 2709 r.rt = $5.rt; 2710 r.rpool.opts = $5.pool_opts; 2711 if ($5.key != NULL) 2712 memcpy(&r.rpool.key, $5.key, 2713 sizeof(struct pf_poolhashkey)); 2714 } 2715 if (r.rt) { 2716 decide_address_family($5.host, &r.af); 2717 remove_invalid_hosts(&$5.host, &r.af); 2718 if ($5.host == NULL) { 2719 yyerror("no routing address with " 2720 "matching address family found."); 2721 YYERROR; 2722 } 2723 if ((r.rpool.opts & PF_POOL_TYPEMASK) == 2724 PF_POOL_NONE && ($5.host->next != NULL || 2725 $5.host->addr.type == PF_ADDR_TABLE || 2726 DYNIF_MULTIADDR($5.host->addr))) 2727 r.rpool.opts |= PF_POOL_ROUNDROBIN; 2728 if ((r.rpool.opts & PF_POOL_TYPEMASK) != 2729 PF_POOL_ROUNDROBIN && 2730 disallow_table($5.host, "tables are only " 2731 "supported in round-robin routing pools")) 2732 YYERROR; 2733 if ((r.rpool.opts & PF_POOL_TYPEMASK) != 2734 PF_POOL_ROUNDROBIN && 2735 disallow_alias($5.host, "interface (%s) " 2736 "is only supported in round-robin " 2737 "routing pools")) 2738 YYERROR; 2739 if ($5.host->next != NULL) { 2740 if ((r.rpool.opts & PF_POOL_TYPEMASK) != 2741 PF_POOL_ROUNDROBIN) { 2742 yyerror("r.rpool.opts must " 2743 "be PF_POOL_ROUNDROBIN"); 2744 YYERROR; 2745 } 2746 } 2747 } 2748 if ($9.queues.qname != NULL) { 2749 if (strlcpy(r.qname, $9.queues.qname, 2750 sizeof(r.qname)) >= sizeof(r.qname)) { 2751 yyerror("rule qname too long (max " 2752 "%d chars)", sizeof(r.qname)-1); 2753 YYERROR; 2754 } 2755 free($9.queues.qname); 2756 } 2757 if ($9.queues.pqname != NULL) { 2758 if (strlcpy(r.pqname, $9.queues.pqname, 2759 sizeof(r.pqname)) >= sizeof(r.pqname)) { 2760 yyerror("rule pqname too long (max " 2761 "%d chars)", sizeof(r.pqname)-1); 2762 YYERROR; 2763 } 2764 free($9.queues.pqname); 2765 } 2766 #ifdef __FreeBSD__ 2767 r.divert.port = $9.divert.port; 2768 #else 2769 if ((r.divert.port = $9.divert.port)) { 2770 if (r.direction == PF_OUT) { 2771 if ($9.divert.addr) { 2772 yyerror("address specified " 2773 "for outgoing divert"); 2774 YYERROR; 2775 } 2776 bzero(&r.divert.addr, 2777 sizeof(r.divert.addr)); 2778 } else { 2779 if (!$9.divert.addr) { 2780 yyerror("no address specified " 2781 "for incoming divert"); 2782 YYERROR; 2783 } 2784 if ($9.divert.addr->af != r.af) { 2785 yyerror("address family " 2786 "mismatch for divert"); 2787 YYERROR; 2788 } 2789 r.divert.addr = 2790 $9.divert.addr->addr.v.a.addr; 2791 } 2792 } 2793 #endif 2794 2795 if ($9.dnpipe || $9.dnrpipe) { 2796 r.dnpipe = $9.dnpipe; 2797 r.dnrpipe = $9.dnrpipe; 2798 if ($9.free_flags & PFRULE_DN_IS_PIPE) 2799 r.free_flags |= PFRULE_DN_IS_PIPE; 2800 else 2801 r.free_flags |= PFRULE_DN_IS_QUEUE; 2802 } 2803 2804 expand_rule(&r, $4, $5.host, $7, $8.src_os, 2805 $8.src.host, $8.src.port, $8.dst.host, $8.dst.port, 2806 $9.uid, $9.gid, $9.rcv, $9.icmpspec, ""); 2807 } 2808 ; 2809 2810 filter_opts : { 2811 bzero(&filter_opts, sizeof filter_opts); 2812 filter_opts.rtableid = -1; 2813 } 2814 filter_opts_l 2815 { $$ = filter_opts; } 2816 | /* empty */ { 2817 bzero(&filter_opts, sizeof filter_opts); 2818 filter_opts.rtableid = -1; 2819 $$ = filter_opts; 2820 } 2821 ; 2822 2823 filter_opts_l : filter_opts_l filter_opt 2824 | filter_opt 2825 ; 2826 2827 filter_opt : USER uids { 2828 if (filter_opts.uid) 2829 $2->tail->next = filter_opts.uid; 2830 filter_opts.uid = $2; 2831 } 2832 | GROUP gids { 2833 if (filter_opts.gid) 2834 $2->tail->next = filter_opts.gid; 2835 filter_opts.gid = $2; 2836 } 2837 | flags { 2838 if (filter_opts.marker & FOM_FLAGS) { 2839 yyerror("flags cannot be redefined"); 2840 YYERROR; 2841 } 2842 filter_opts.marker |= FOM_FLAGS; 2843 filter_opts.flags.b1 |= $1.b1; 2844 filter_opts.flags.b2 |= $1.b2; 2845 filter_opts.flags.w |= $1.w; 2846 filter_opts.flags.w2 |= $1.w2; 2847 } 2848 | icmpspec { 2849 if (filter_opts.marker & FOM_ICMP) { 2850 yyerror("icmp-type cannot be redefined"); 2851 YYERROR; 2852 } 2853 filter_opts.marker |= FOM_ICMP; 2854 filter_opts.icmpspec = $1; 2855 } 2856 | PRIO NUMBER { 2857 if (filter_opts.marker & FOM_PRIO) { 2858 yyerror("prio cannot be redefined"); 2859 YYERROR; 2860 } 2861 if ($2 < 0 || $2 > PF_PRIO_MAX) { 2862 yyerror("prio must be 0 - %u", PF_PRIO_MAX); 2863 YYERROR; 2864 } 2865 filter_opts.marker |= FOM_PRIO; 2866 filter_opts.prio = $2; 2867 } 2868 | TOS tos { 2869 if (filter_opts.marker & FOM_TOS) { 2870 yyerror("tos cannot be redefined"); 2871 YYERROR; 2872 } 2873 filter_opts.marker |= FOM_TOS; 2874 filter_opts.tos = $2; 2875 } 2876 | keep { 2877 if (filter_opts.marker & FOM_KEEP) { 2878 yyerror("modulate or keep cannot be redefined"); 2879 YYERROR; 2880 } 2881 filter_opts.marker |= FOM_KEEP; 2882 filter_opts.keep.action = $1.action; 2883 filter_opts.keep.options = $1.options; 2884 } 2885 | RIDENTIFIER number { 2886 filter_opts.ridentifier = $2; 2887 } 2888 | FRAGMENT { 2889 filter_opts.fragment = 1; 2890 } 2891 | ALLOWOPTS { 2892 filter_opts.allowopts = 1; 2893 } 2894 | label { 2895 if (filter_opts.labelcount >= PF_RULE_MAX_LABEL_COUNT) { 2896 yyerror("label can only be used %d times", PF_RULE_MAX_LABEL_COUNT); 2897 YYERROR; 2898 } 2899 filter_opts.label[filter_opts.labelcount++] = $1; 2900 } 2901 | qname { 2902 if (filter_opts.queues.qname) { 2903 yyerror("queue cannot be redefined"); 2904 YYERROR; 2905 } 2906 filter_opts.queues = $1; 2907 } 2908 | DNPIPE number { 2909 filter_opts.dnpipe = $2; 2910 filter_opts.free_flags |= PFRULE_DN_IS_PIPE; 2911 } 2912 | DNPIPE '(' number ')' { 2913 filter_opts.dnpipe = $3; 2914 filter_opts.free_flags |= PFRULE_DN_IS_PIPE; 2915 } 2916 | DNPIPE '(' number comma number ')' { 2917 filter_opts.dnrpipe = $5; 2918 filter_opts.dnpipe = $3; 2919 filter_opts.free_flags |= PFRULE_DN_IS_PIPE; 2920 } 2921 | DNQUEUE number { 2922 filter_opts.dnpipe = $2; 2923 filter_opts.free_flags |= PFRULE_DN_IS_QUEUE; 2924 } 2925 | DNQUEUE '(' number comma number ')' { 2926 filter_opts.dnrpipe = $5; 2927 filter_opts.dnpipe = $3; 2928 filter_opts.free_flags |= PFRULE_DN_IS_QUEUE; 2929 } 2930 | DNQUEUE '(' number ')' { 2931 filter_opts.dnpipe = $3; 2932 filter_opts.free_flags |= PFRULE_DN_IS_QUEUE; 2933 } 2934 | TAG string { 2935 filter_opts.tag = $2; 2936 } 2937 | not TAGGED string { 2938 filter_opts.match_tag = $3; 2939 filter_opts.match_tag_not = $1; 2940 } 2941 | RECEIVEDON if_item { 2942 if (filter_opts.rcv) { 2943 yyerror("cannot respecify received-on"); 2944 YYERROR; 2945 } 2946 filter_opts.rcv = $2; 2947 } 2948 | PROBABILITY probability { 2949 double p; 2950 2951 p = floor($2 * UINT_MAX + 0.5); 2952 if (p < 0.0 || p > UINT_MAX) { 2953 yyerror("invalid probability: %lf", p); 2954 YYERROR; 2955 } 2956 filter_opts.prob = (u_int32_t)p; 2957 if (filter_opts.prob == 0) 2958 filter_opts.prob = 1; 2959 } 2960 | RTABLE NUMBER { 2961 if ($2 < 0 || $2 > rt_tableid_max()) { 2962 yyerror("invalid rtable id"); 2963 YYERROR; 2964 } 2965 filter_opts.rtableid = $2; 2966 } 2967 | DIVERTTO portplain { 2968 #ifdef __FreeBSD__ 2969 filter_opts.divert.port = $2.a; 2970 if (!filter_opts.divert.port) { 2971 yyerror("invalid divert port: %u", ntohs($2.a)); 2972 YYERROR; 2973 } 2974 #endif 2975 } 2976 | DIVERTTO STRING PORT portplain { 2977 #ifndef __FreeBSD__ 2978 if ((filter_opts.divert.addr = host($2)) == NULL) { 2979 yyerror("could not parse divert address: %s", 2980 $2); 2981 free($2); 2982 YYERROR; 2983 } 2984 #else 2985 if ($2) 2986 #endif 2987 free($2); 2988 filter_opts.divert.port = $4.a; 2989 if (!filter_opts.divert.port) { 2990 yyerror("invalid divert port: %u", ntohs($4.a)); 2991 YYERROR; 2992 } 2993 } 2994 | DIVERTREPLY { 2995 #ifdef __FreeBSD__ 2996 yyerror("divert-reply has no meaning in FreeBSD pf(4)"); 2997 YYERROR; 2998 #else 2999 filter_opts.divert.port = 1; /* some random value */ 3000 #endif 3001 } 3002 | SCRUB '(' scrub_opts ')' { 3003 filter_opts.nodf = $3.nodf; 3004 filter_opts.minttl = $3.minttl; 3005 if ($3.marker & FOM_SETTOS) { 3006 /* Old style rules are "scrub set-tos 0x42" 3007 * New style are "set tos 0x42 scrub (...)" 3008 * What is in "scrub(...)"" is unfortunately the 3009 * original scrub syntax so it would overwrite 3010 * "set tos" of a pass/match rule. 3011 */ 3012 filter_opts.settos = $3.settos; 3013 } 3014 filter_opts.randomid = $3.randomid; 3015 filter_opts.max_mss = $3.maxmss; 3016 if ($3.reassemble_tcp) 3017 filter_opts.marker |= FOM_SCRUB_TCP; 3018 filter_opts.marker |= $3.marker; 3019 } 3020 | filter_sets 3021 ; 3022 3023 filter_sets : SET '(' filter_sets_l ')' { $$ = filter_opts; } 3024 | SET filter_set { $$ = filter_opts; } 3025 ; 3026 3027 filter_sets_l : filter_sets_l comma filter_set 3028 | filter_set 3029 ; 3030 3031 filter_set : prio { 3032 if (filter_opts.marker & FOM_SETPRIO) { 3033 yyerror("prio cannot be redefined"); 3034 YYERROR; 3035 } 3036 filter_opts.marker |= FOM_SETPRIO; 3037 filter_opts.set_prio[0] = $1.b1; 3038 filter_opts.set_prio[1] = $1.b2; 3039 } 3040 | TOS tos { 3041 if (filter_opts.marker & FOM_SETTOS) { 3042 yyerror("tos cannot be respecified"); 3043 YYERROR; 3044 } 3045 filter_opts.marker |= FOM_SETTOS; 3046 filter_opts.settos = $2; 3047 } 3048 prio : PRIO NUMBER { 3049 if ($2 < 0 || $2 > PF_PRIO_MAX) { 3050 yyerror("prio must be 0 - %u", PF_PRIO_MAX); 3051 YYERROR; 3052 } 3053 $$.b1 = $$.b2 = $2; 3054 } 3055 | PRIO '(' NUMBER comma NUMBER ')' { 3056 if ($3 < 0 || $3 > PF_PRIO_MAX || 3057 $5 < 0 || $5 > PF_PRIO_MAX) { 3058 yyerror("prio must be 0 - %u", PF_PRIO_MAX); 3059 YYERROR; 3060 } 3061 $$.b1 = $3; 3062 $$.b2 = $5; 3063 } 3064 ; 3065 3066 probability : STRING { 3067 char *e; 3068 double p = strtod($1, &e); 3069 3070 if (*e == '%') { 3071 p *= 0.01; 3072 e++; 3073 } 3074 if (*e) { 3075 yyerror("invalid probability: %s", $1); 3076 free($1); 3077 YYERROR; 3078 } 3079 free($1); 3080 $$ = p; 3081 } 3082 | NUMBER { 3083 $$ = (double)$1; 3084 } 3085 ; 3086 3087 3088 action : PASS { 3089 $$.b1 = PF_PASS; 3090 $$.b2 = failpolicy; 3091 $$.w = returnicmpdefault; 3092 $$.w2 = returnicmp6default; 3093 } 3094 | MATCH { $$.b1 = PF_MATCH; $$.b2 = $$.w = 0; } 3095 | BLOCK blockspec { $$ = $2; $$.b1 = PF_DROP; } 3096 ; 3097 3098 blockspec : /* empty */ { 3099 $$.b2 = blockpolicy; 3100 $$.w = returnicmpdefault; 3101 $$.w2 = returnicmp6default; 3102 } 3103 | DROP { 3104 $$.b2 = PFRULE_DROP; 3105 $$.w = 0; 3106 $$.w2 = 0; 3107 } 3108 | RETURNRST { 3109 $$.b2 = PFRULE_RETURNRST; 3110 $$.w = 0; 3111 $$.w2 = 0; 3112 } 3113 | RETURNRST '(' TTL NUMBER ')' { 3114 if ($4 < 0 || $4 > 255) { 3115 yyerror("illegal ttl value %d", $4); 3116 YYERROR; 3117 } 3118 $$.b2 = PFRULE_RETURNRST; 3119 $$.w = $4; 3120 $$.w2 = 0; 3121 } 3122 | RETURNICMP { 3123 $$.b2 = PFRULE_RETURNICMP; 3124 $$.w = returnicmpdefault; 3125 $$.w2 = returnicmp6default; 3126 } 3127 | RETURNICMP6 { 3128 $$.b2 = PFRULE_RETURNICMP; 3129 $$.w = returnicmpdefault; 3130 $$.w2 = returnicmp6default; 3131 } 3132 | RETURNICMP '(' reticmpspec ')' { 3133 $$.b2 = PFRULE_RETURNICMP; 3134 $$.w = $3; 3135 $$.w2 = returnicmpdefault; 3136 } 3137 | RETURNICMP6 '(' reticmp6spec ')' { 3138 $$.b2 = PFRULE_RETURNICMP; 3139 $$.w = returnicmpdefault; 3140 $$.w2 = $3; 3141 } 3142 | RETURNICMP '(' reticmpspec comma reticmp6spec ')' { 3143 $$.b2 = PFRULE_RETURNICMP; 3144 $$.w = $3; 3145 $$.w2 = $5; 3146 } 3147 | RETURN { 3148 $$.b2 = PFRULE_RETURN; 3149 $$.w = returnicmpdefault; 3150 $$.w2 = returnicmp6default; 3151 } 3152 ; 3153 3154 reticmpspec : STRING { 3155 if (!($$ = parseicmpspec($1, AF_INET))) { 3156 free($1); 3157 YYERROR; 3158 } 3159 free($1); 3160 } 3161 | NUMBER { 3162 u_int8_t icmptype; 3163 3164 if ($1 < 0 || $1 > 255) { 3165 yyerror("invalid icmp code %lu", $1); 3166 YYERROR; 3167 } 3168 icmptype = returnicmpdefault >> 8; 3169 $$ = (icmptype << 8 | $1); 3170 } 3171 ; 3172 3173 reticmp6spec : STRING { 3174 if (!($$ = parseicmpspec($1, AF_INET6))) { 3175 free($1); 3176 YYERROR; 3177 } 3178 free($1); 3179 } 3180 | NUMBER { 3181 u_int8_t icmptype; 3182 3183 if ($1 < 0 || $1 > 255) { 3184 yyerror("invalid icmp code %lu", $1); 3185 YYERROR; 3186 } 3187 icmptype = returnicmp6default >> 8; 3188 $$ = (icmptype << 8 | $1); 3189 } 3190 ; 3191 3192 dir : /* empty */ { $$ = PF_INOUT; } 3193 | IN { $$ = PF_IN; } 3194 | OUT { $$ = PF_OUT; } 3195 ; 3196 3197 quick : /* empty */ { $$.quick = 0; } 3198 | QUICK { $$.quick = 1; } 3199 ; 3200 3201 logquick : /* empty */ { $$.log = 0; $$.quick = 0; $$.logif = 0; } 3202 | log { $$ = $1; $$.quick = 0; } 3203 | QUICK { $$.quick = 1; $$.log = 0; $$.logif = 0; } 3204 | log QUICK { $$ = $1; $$.quick = 1; } 3205 | QUICK log { $$ = $2; $$.quick = 1; } 3206 ; 3207 3208 log : LOG { $$.log = PF_LOG; $$.logif = 0; } 3209 | LOG '(' logopts ')' { 3210 $$.log = PF_LOG | $3.log; 3211 $$.logif = $3.logif; 3212 } 3213 ; 3214 3215 logopts : logopt { $$ = $1; } 3216 | logopts comma logopt { 3217 $$.log = $1.log | $3.log; 3218 $$.logif = $3.logif; 3219 if ($$.logif == 0) 3220 $$.logif = $1.logif; 3221 } 3222 ; 3223 3224 logopt : ALL { $$.log = PF_LOG_ALL; $$.logif = 0; } 3225 | USER { $$.log = PF_LOG_SOCKET_LOOKUP; $$.logif = 0; } 3226 | GROUP { $$.log = PF_LOG_SOCKET_LOOKUP; $$.logif = 0; } 3227 | TO string { 3228 const char *errstr; 3229 u_int i; 3230 3231 $$.log = 0; 3232 if (strncmp($2, "pflog", 5)) { 3233 yyerror("%s: should be a pflog interface", $2); 3234 free($2); 3235 YYERROR; 3236 } 3237 i = strtonum($2 + 5, 0, 255, &errstr); 3238 if (errstr) { 3239 yyerror("%s: %s", $2, errstr); 3240 free($2); 3241 YYERROR; 3242 } 3243 free($2); 3244 $$.logif = i; 3245 } 3246 ; 3247 3248 interface : /* empty */ { $$ = NULL; } 3249 | ON if_item_not { $$ = $2; } 3250 | ON '{' optnl if_list '}' { $$ = $4; } 3251 ; 3252 3253 if_list : if_item_not optnl { $$ = $1; } 3254 | if_list comma if_item_not optnl { 3255 $1->tail->next = $3; 3256 $1->tail = $3; 3257 $$ = $1; 3258 } 3259 ; 3260 3261 if_item_not : not if_item { $$ = $2; $$->not = $1; } 3262 ; 3263 3264 if_item : STRING { 3265 struct node_host *n; 3266 3267 $$ = calloc(1, sizeof(struct node_if)); 3268 if ($$ == NULL) 3269 err(1, "if_item: calloc"); 3270 if (strlcpy($$->ifname, $1, sizeof($$->ifname)) >= 3271 sizeof($$->ifname)) { 3272 free($1); 3273 free($$); 3274 yyerror("interface name too long"); 3275 YYERROR; 3276 } 3277 3278 if ((n = ifa_exists($1)) != NULL) 3279 $$->ifa_flags = n->ifa_flags; 3280 3281 free($1); 3282 $$->not = 0; 3283 $$->next = NULL; 3284 $$->tail = $$; 3285 } 3286 ; 3287 3288 af : /* empty */ { $$ = 0; } 3289 | INET { $$ = AF_INET; } 3290 | INET6 { $$ = AF_INET6; } 3291 ; 3292 3293 etherproto : /* empty */ { $$ = NULL; } 3294 | PROTO etherproto_item { $$ = $2; } 3295 | PROTO '{' optnl etherproto_list '}' { $$ = $4; } 3296 ; 3297 3298 etherproto_list : etherproto_item optnl { $$ = $1; } 3299 | etherproto_list comma etherproto_item optnl { 3300 $1->tail->next = $3; 3301 $1->tail = $3; 3302 $$ = $1; 3303 } 3304 ; 3305 3306 etherproto_item : etherprotoval { 3307 u_int16_t pr; 3308 3309 pr = (u_int16_t)$1; 3310 if (pr == 0) { 3311 yyerror("proto 0 cannot be used"); 3312 YYERROR; 3313 } 3314 $$ = calloc(1, sizeof(struct node_proto)); 3315 if ($$ == NULL) 3316 err(1, "proto_item: calloc"); 3317 $$->proto = pr; 3318 $$->next = NULL; 3319 $$->tail = $$; 3320 } 3321 ; 3322 3323 etherprotoval : NUMBER { 3324 if ($1 < 0 || $1 > 65565) { 3325 yyerror("protocol outside range"); 3326 YYERROR; 3327 } 3328 } 3329 | STRING 3330 { 3331 if (!strncmp($1, "0x", 2)) { 3332 if (sscanf($1, "0x%4x", &$$) != 1) { 3333 free($1); 3334 yyerror("invalid EtherType hex"); 3335 YYERROR; 3336 } 3337 } else { 3338 yyerror("Symbolic EtherType not yet supported"); 3339 } 3340 } 3341 ; 3342 3343 proto : /* empty */ { $$ = NULL; } 3344 | PROTO proto_item { $$ = $2; } 3345 | PROTO '{' optnl proto_list '}' { $$ = $4; } 3346 ; 3347 3348 proto_list : proto_item optnl { $$ = $1; } 3349 | proto_list comma proto_item optnl { 3350 $1->tail->next = $3; 3351 $1->tail = $3; 3352 $$ = $1; 3353 } 3354 ; 3355 3356 proto_item : protoval { 3357 u_int8_t pr; 3358 3359 pr = (u_int8_t)$1; 3360 if (pr == 0) { 3361 yyerror("proto 0 cannot be used"); 3362 YYERROR; 3363 } 3364 $$ = calloc(1, sizeof(struct node_proto)); 3365 if ($$ == NULL) 3366 err(1, "proto_item: calloc"); 3367 $$->proto = pr; 3368 $$->next = NULL; 3369 $$->tail = $$; 3370 } 3371 ; 3372 3373 protoval : STRING { 3374 struct protoent *p; 3375 3376 p = getprotobyname($1); 3377 if (p == NULL) { 3378 yyerror("unknown protocol %s", $1); 3379 free($1); 3380 YYERROR; 3381 } 3382 $$ = p->p_proto; 3383 free($1); 3384 } 3385 | NUMBER { 3386 if ($1 < 0 || $1 > 255) { 3387 yyerror("protocol outside range"); 3388 YYERROR; 3389 } 3390 } 3391 ; 3392 3393 l3fromto : /* empty */ { 3394 bzero(&$$, sizeof($$)); 3395 } 3396 | L3 fromto { 3397 if ($2.src.host != NULL && 3398 $2.src.host->addr.type != PF_ADDR_ADDRMASK && 3399 $2.src.host->addr.type != PF_ADDR_TABLE) { 3400 yyerror("from must be an address or table"); 3401 YYERROR; 3402 } 3403 if ($2.dst.host != NULL && 3404 $2.dst.host->addr.type != PF_ADDR_ADDRMASK && 3405 $2.dst.host->addr.type != PF_ADDR_TABLE) { 3406 yyerror("to must be an address or table"); 3407 YYERROR; 3408 } 3409 $$ = $2; 3410 } 3411 ; 3412 etherfromto : ALL { 3413 $$.src = NULL; 3414 $$.dst = NULL; 3415 } 3416 | etherfrom etherto { 3417 $$.src = $1.mac; 3418 $$.dst = $2.mac; 3419 } 3420 ; 3421 3422 etherfrom : /* emtpy */ { 3423 bzero(&$$, sizeof($$)); 3424 } 3425 | FROM macspec { 3426 $$.mac = $2; 3427 } 3428 ; 3429 3430 etherto : /* empty */ { 3431 bzero(&$$, sizeof($$)); 3432 } 3433 | TO macspec { 3434 $$.mac = $2; 3435 } 3436 ; 3437 3438 mac : string '/' NUMBER { 3439 $$ = node_mac_from_string_masklen($1, $3); 3440 free($1); 3441 if ($$ == NULL) 3442 YYERROR; 3443 } 3444 | string { 3445 if (strchr($1, '&')) { 3446 /* mac&mask */ 3447 char *mac = strtok($1, "&"); 3448 char *mask = strtok(NULL, "&"); 3449 $$ = node_mac_from_string_mask(mac, mask); 3450 } else { 3451 $$ = node_mac_from_string($1); 3452 } 3453 free($1); 3454 if ($$ == NULL) 3455 YYERROR; 3456 3457 } 3458 xmac : not mac { 3459 struct node_mac *n; 3460 3461 for (n = $2; n != NULL; n = n->next) 3462 n->neg = $1; 3463 $$ = $2; 3464 } 3465 ; 3466 macspec : xmac { 3467 $$ = $1; 3468 } 3469 | '{' optnl mac_list '}' 3470 { 3471 $$ = $3; 3472 } 3473 ; 3474 mac_list : xmac optnl { 3475 $$ = $1; 3476 } 3477 | mac_list comma xmac { 3478 if ($3 == NULL) 3479 $$ = $1; 3480 else if ($1 == NULL) 3481 $$ = $3; 3482 else { 3483 $1->tail->next = $3; 3484 $1->tail = $3->tail; 3485 $$ = $1; 3486 } 3487 } 3488 3489 fromto : ALL { 3490 $$.src.host = NULL; 3491 $$.src.port = NULL; 3492 $$.dst.host = NULL; 3493 $$.dst.port = NULL; 3494 $$.src_os = NULL; 3495 } 3496 | from os to { 3497 $$.src = $1; 3498 $$.src_os = $2; 3499 $$.dst = $3; 3500 } 3501 ; 3502 3503 os : /* empty */ { $$ = NULL; } 3504 | OS xos { $$ = $2; } 3505 | OS '{' optnl os_list '}' { $$ = $4; } 3506 ; 3507 3508 xos : STRING { 3509 $$ = calloc(1, sizeof(struct node_os)); 3510 if ($$ == NULL) 3511 err(1, "os: calloc"); 3512 $$->os = $1; 3513 $$->tail = $$; 3514 } 3515 ; 3516 3517 os_list : xos optnl { $$ = $1; } 3518 | os_list comma xos optnl { 3519 $1->tail->next = $3; 3520 $1->tail = $3; 3521 $$ = $1; 3522 } 3523 ; 3524 3525 from : /* empty */ { 3526 $$.host = NULL; 3527 $$.port = NULL; 3528 } 3529 | FROM ipportspec { 3530 $$ = $2; 3531 } 3532 ; 3533 3534 to : /* empty */ { 3535 $$.host = NULL; 3536 $$.port = NULL; 3537 } 3538 | TO ipportspec { 3539 if (disallow_urpf_failed($2.host, "\"urpf-failed\" is " 3540 "not permitted in a destination address")) 3541 YYERROR; 3542 $$ = $2; 3543 } 3544 ; 3545 3546 ipportspec : ipspec { 3547 $$.host = $1; 3548 $$.port = NULL; 3549 } 3550 | ipspec PORT portspec { 3551 $$.host = $1; 3552 $$.port = $3; 3553 } 3554 | PORT portspec { 3555 $$.host = NULL; 3556 $$.port = $2; 3557 } 3558 ; 3559 3560 optnl : '\n' optnl 3561 | 3562 ; 3563 3564 ipspec : ANY { $$ = NULL; } 3565 | xhost { $$ = $1; } 3566 | '{' optnl host_list '}' { $$ = $3; } 3567 ; 3568 3569 toipspec : TO ipspec { $$ = $2; } 3570 | /* empty */ { $$ = NULL; } 3571 ; 3572 3573 host_list : ipspec optnl { $$ = $1; } 3574 | host_list comma ipspec optnl { 3575 if ($3 == NULL) 3576 $$ = $1; 3577 else if ($1 == NULL) 3578 $$ = $3; 3579 else { 3580 $1->tail->next = $3; 3581 $1->tail = $3->tail; 3582 $$ = $1; 3583 } 3584 } 3585 ; 3586 3587 xhost : not host { 3588 struct node_host *n; 3589 3590 for (n = $2; n != NULL; n = n->next) 3591 n->not = $1; 3592 $$ = $2; 3593 } 3594 | not NOROUTE { 3595 $$ = calloc(1, sizeof(struct node_host)); 3596 if ($$ == NULL) 3597 err(1, "xhost: calloc"); 3598 $$->addr.type = PF_ADDR_NOROUTE; 3599 $$->next = NULL; 3600 $$->not = $1; 3601 $$->tail = $$; 3602 } 3603 | not URPFFAILED { 3604 $$ = calloc(1, sizeof(struct node_host)); 3605 if ($$ == NULL) 3606 err(1, "xhost: calloc"); 3607 $$->addr.type = PF_ADDR_URPFFAILED; 3608 $$->next = NULL; 3609 $$->not = $1; 3610 $$->tail = $$; 3611 } 3612 ; 3613 3614 host : STRING { 3615 if (($$ = host($1)) == NULL) { 3616 /* error. "any" is handled elsewhere */ 3617 free($1); 3618 yyerror("could not parse host specification"); 3619 YYERROR; 3620 } 3621 free($1); 3622 3623 } 3624 | STRING '-' STRING { 3625 struct node_host *b, *e; 3626 3627 if ((b = host($1)) == NULL || (e = host($3)) == NULL) { 3628 free($1); 3629 free($3); 3630 yyerror("could not parse host specification"); 3631 YYERROR; 3632 } 3633 if (b->af != e->af || 3634 b->addr.type != PF_ADDR_ADDRMASK || 3635 e->addr.type != PF_ADDR_ADDRMASK || 3636 unmask(&b->addr.v.a.mask, b->af) != 3637 (b->af == AF_INET ? 32 : 128) || 3638 unmask(&e->addr.v.a.mask, e->af) != 3639 (e->af == AF_INET ? 32 : 128) || 3640 b->next != NULL || b->not || 3641 e->next != NULL || e->not) { 3642 free(b); 3643 free(e); 3644 free($1); 3645 free($3); 3646 yyerror("invalid address range"); 3647 YYERROR; 3648 } 3649 memcpy(&b->addr.v.a.mask, &e->addr.v.a.addr, 3650 sizeof(b->addr.v.a.mask)); 3651 b->addr.type = PF_ADDR_RANGE; 3652 $$ = b; 3653 free(e); 3654 free($1); 3655 free($3); 3656 } 3657 | STRING '/' NUMBER { 3658 char *buf; 3659 3660 if (asprintf(&buf, "%s/%lld", $1, (long long)$3) == -1) 3661 err(1, "host: asprintf"); 3662 free($1); 3663 if (($$ = host(buf)) == NULL) { 3664 /* error. "any" is handled elsewhere */ 3665 free(buf); 3666 yyerror("could not parse host specification"); 3667 YYERROR; 3668 } 3669 free(buf); 3670 } 3671 | NUMBER '/' NUMBER { 3672 char *buf; 3673 3674 /* ie. for 10/8 parsing */ 3675 #ifdef __FreeBSD__ 3676 if (asprintf(&buf, "%lld/%lld", (long long)$1, (long long)$3) == -1) 3677 #else 3678 if (asprintf(&buf, "%lld/%lld", $1, $3) == -1) 3679 #endif 3680 err(1, "host: asprintf"); 3681 if (($$ = host(buf)) == NULL) { 3682 /* error. "any" is handled elsewhere */ 3683 free(buf); 3684 yyerror("could not parse host specification"); 3685 YYERROR; 3686 } 3687 free(buf); 3688 } 3689 | dynaddr 3690 | dynaddr '/' NUMBER { 3691 struct node_host *n; 3692 3693 if ($3 < 0 || $3 > 128) { 3694 yyerror("bit number too big"); 3695 YYERROR; 3696 } 3697 $$ = $1; 3698 for (n = $1; n != NULL; n = n->next) 3699 set_ipmask(n, $3); 3700 } 3701 | '<' STRING '>' { 3702 if (strlen($2) >= PF_TABLE_NAME_SIZE) { 3703 yyerror("table name '%s' too long", $2); 3704 free($2); 3705 YYERROR; 3706 } 3707 $$ = calloc(1, sizeof(struct node_host)); 3708 if ($$ == NULL) 3709 err(1, "host: calloc"); 3710 $$->addr.type = PF_ADDR_TABLE; 3711 if (strlcpy($$->addr.v.tblname, $2, 3712 sizeof($$->addr.v.tblname)) >= 3713 sizeof($$->addr.v.tblname)) 3714 errx(1, "host: strlcpy"); 3715 free($2); 3716 $$->next = NULL; 3717 $$->tail = $$; 3718 } 3719 ; 3720 3721 number : NUMBER 3722 | STRING { 3723 u_long ulval; 3724 3725 if (atoul($1, &ulval) == -1) { 3726 yyerror("%s is not a number", $1); 3727 free($1); 3728 YYERROR; 3729 } else 3730 $$ = ulval; 3731 free($1); 3732 } 3733 ; 3734 3735 dynaddr : '(' STRING ')' { 3736 int flags = 0; 3737 char *p, *op; 3738 3739 op = $2; 3740 if (!isalpha(op[0])) { 3741 yyerror("invalid interface name '%s'", op); 3742 free(op); 3743 YYERROR; 3744 } 3745 while ((p = strrchr($2, ':')) != NULL) { 3746 if (!strcmp(p+1, "network")) 3747 flags |= PFI_AFLAG_NETWORK; 3748 else if (!strcmp(p+1, "broadcast")) 3749 flags |= PFI_AFLAG_BROADCAST; 3750 else if (!strcmp(p+1, "peer")) 3751 flags |= PFI_AFLAG_PEER; 3752 else if (!strcmp(p+1, "0")) 3753 flags |= PFI_AFLAG_NOALIAS; 3754 else { 3755 yyerror("interface %s has bad modifier", 3756 $2); 3757 free(op); 3758 YYERROR; 3759 } 3760 *p = '\0'; 3761 } 3762 if (flags & (flags - 1) & PFI_AFLAG_MODEMASK) { 3763 free(op); 3764 yyerror("illegal combination of " 3765 "interface modifiers"); 3766 YYERROR; 3767 } 3768 $$ = calloc(1, sizeof(struct node_host)); 3769 if ($$ == NULL) 3770 err(1, "address: calloc"); 3771 $$->af = 0; 3772 set_ipmask($$, 128); 3773 $$->addr.type = PF_ADDR_DYNIFTL; 3774 $$->addr.iflags = flags; 3775 if (strlcpy($$->addr.v.ifname, $2, 3776 sizeof($$->addr.v.ifname)) >= 3777 sizeof($$->addr.v.ifname)) { 3778 free(op); 3779 free($$); 3780 yyerror("interface name too long"); 3781 YYERROR; 3782 } 3783 free(op); 3784 $$->next = NULL; 3785 $$->tail = $$; 3786 } 3787 ; 3788 3789 portspec : port_item { $$ = $1; } 3790 | '{' optnl port_list '}' { $$ = $3; } 3791 ; 3792 3793 port_list : port_item optnl { $$ = $1; } 3794 | port_list comma port_item optnl { 3795 $1->tail->next = $3; 3796 $1->tail = $3; 3797 $$ = $1; 3798 } 3799 ; 3800 3801 port_item : portrange { 3802 $$ = calloc(1, sizeof(struct node_port)); 3803 if ($$ == NULL) 3804 err(1, "port_item: calloc"); 3805 $$->port[0] = $1.a; 3806 $$->port[1] = $1.b; 3807 if ($1.t) 3808 $$->op = PF_OP_RRG; 3809 else 3810 $$->op = PF_OP_EQ; 3811 $$->next = NULL; 3812 $$->tail = $$; 3813 } 3814 | unaryop portrange { 3815 if ($2.t) { 3816 yyerror("':' cannot be used with an other " 3817 "port operator"); 3818 YYERROR; 3819 } 3820 $$ = calloc(1, sizeof(struct node_port)); 3821 if ($$ == NULL) 3822 err(1, "port_item: calloc"); 3823 $$->port[0] = $2.a; 3824 $$->port[1] = $2.b; 3825 $$->op = $1; 3826 $$->next = NULL; 3827 $$->tail = $$; 3828 } 3829 | portrange PORTBINARY portrange { 3830 if ($1.t || $3.t) { 3831 yyerror("':' cannot be used with an other " 3832 "port operator"); 3833 YYERROR; 3834 } 3835 $$ = calloc(1, sizeof(struct node_port)); 3836 if ($$ == NULL) 3837 err(1, "port_item: calloc"); 3838 $$->port[0] = $1.a; 3839 $$->port[1] = $3.a; 3840 $$->op = $2; 3841 $$->next = NULL; 3842 $$->tail = $$; 3843 } 3844 ; 3845 3846 portplain : numberstring { 3847 if (parseport($1, &$$, 0) == -1) { 3848 free($1); 3849 YYERROR; 3850 } 3851 free($1); 3852 } 3853 ; 3854 3855 portrange : numberstring { 3856 if (parseport($1, &$$, PPORT_RANGE) == -1) { 3857 free($1); 3858 YYERROR; 3859 } 3860 free($1); 3861 } 3862 ; 3863 3864 uids : uid_item { $$ = $1; } 3865 | '{' optnl uid_list '}' { $$ = $3; } 3866 ; 3867 3868 uid_list : uid_item optnl { $$ = $1; } 3869 | uid_list comma uid_item optnl { 3870 $1->tail->next = $3; 3871 $1->tail = $3; 3872 $$ = $1; 3873 } 3874 ; 3875 3876 uid_item : uid { 3877 $$ = calloc(1, sizeof(struct node_uid)); 3878 if ($$ == NULL) 3879 err(1, "uid_item: calloc"); 3880 $$->uid[0] = $1; 3881 $$->uid[1] = $1; 3882 $$->op = PF_OP_EQ; 3883 $$->next = NULL; 3884 $$->tail = $$; 3885 } 3886 | unaryop uid { 3887 if ($2 == UID_MAX && $1 != PF_OP_EQ && $1 != PF_OP_NE) { 3888 yyerror("user unknown requires operator = or " 3889 "!="); 3890 YYERROR; 3891 } 3892 $$ = calloc(1, sizeof(struct node_uid)); 3893 if ($$ == NULL) 3894 err(1, "uid_item: calloc"); 3895 $$->uid[0] = $2; 3896 $$->uid[1] = $2; 3897 $$->op = $1; 3898 $$->next = NULL; 3899 $$->tail = $$; 3900 } 3901 | uid PORTBINARY uid { 3902 if ($1 == UID_MAX || $3 == UID_MAX) { 3903 yyerror("user unknown requires operator = or " 3904 "!="); 3905 YYERROR; 3906 } 3907 $$ = calloc(1, sizeof(struct node_uid)); 3908 if ($$ == NULL) 3909 err(1, "uid_item: calloc"); 3910 $$->uid[0] = $1; 3911 $$->uid[1] = $3; 3912 $$->op = $2; 3913 $$->next = NULL; 3914 $$->tail = $$; 3915 } 3916 ; 3917 3918 uid : STRING { 3919 if (!strcmp($1, "unknown")) 3920 $$ = UID_MAX; 3921 else { 3922 struct passwd *pw; 3923 3924 if ((pw = getpwnam($1)) == NULL) { 3925 yyerror("unknown user %s", $1); 3926 free($1); 3927 YYERROR; 3928 } 3929 $$ = pw->pw_uid; 3930 } 3931 free($1); 3932 } 3933 | NUMBER { 3934 if ($1 < 0 || $1 >= UID_MAX) { 3935 yyerror("illegal uid value %lu", $1); 3936 YYERROR; 3937 } 3938 $$ = $1; 3939 } 3940 ; 3941 3942 gids : gid_item { $$ = $1; } 3943 | '{' optnl gid_list '}' { $$ = $3; } 3944 ; 3945 3946 gid_list : gid_item optnl { $$ = $1; } 3947 | gid_list comma gid_item optnl { 3948 $1->tail->next = $3; 3949 $1->tail = $3; 3950 $$ = $1; 3951 } 3952 ; 3953 3954 gid_item : gid { 3955 $$ = calloc(1, sizeof(struct node_gid)); 3956 if ($$ == NULL) 3957 err(1, "gid_item: calloc"); 3958 $$->gid[0] = $1; 3959 $$->gid[1] = $1; 3960 $$->op = PF_OP_EQ; 3961 $$->next = NULL; 3962 $$->tail = $$; 3963 } 3964 | unaryop gid { 3965 if ($2 == GID_MAX && $1 != PF_OP_EQ && $1 != PF_OP_NE) { 3966 yyerror("group unknown requires operator = or " 3967 "!="); 3968 YYERROR; 3969 } 3970 $$ = calloc(1, sizeof(struct node_gid)); 3971 if ($$ == NULL) 3972 err(1, "gid_item: calloc"); 3973 $$->gid[0] = $2; 3974 $$->gid[1] = $2; 3975 $$->op = $1; 3976 $$->next = NULL; 3977 $$->tail = $$; 3978 } 3979 | gid PORTBINARY gid { 3980 if ($1 == GID_MAX || $3 == GID_MAX) { 3981 yyerror("group unknown requires operator = or " 3982 "!="); 3983 YYERROR; 3984 } 3985 $$ = calloc(1, sizeof(struct node_gid)); 3986 if ($$ == NULL) 3987 err(1, "gid_item: calloc"); 3988 $$->gid[0] = $1; 3989 $$->gid[1] = $3; 3990 $$->op = $2; 3991 $$->next = NULL; 3992 $$->tail = $$; 3993 } 3994 ; 3995 3996 gid : STRING { 3997 if (!strcmp($1, "unknown")) 3998 $$ = GID_MAX; 3999 else { 4000 struct group *grp; 4001 4002 if ((grp = getgrnam($1)) == NULL) { 4003 yyerror("unknown group %s", $1); 4004 free($1); 4005 YYERROR; 4006 } 4007 $$ = grp->gr_gid; 4008 } 4009 free($1); 4010 } 4011 | NUMBER { 4012 if ($1 < 0 || $1 >= GID_MAX) { 4013 yyerror("illegal gid value %lu", $1); 4014 YYERROR; 4015 } 4016 $$ = $1; 4017 } 4018 ; 4019 4020 flag : STRING { 4021 int f; 4022 4023 if ((f = parse_flags($1)) < 0) { 4024 yyerror("bad flags %s", $1); 4025 free($1); 4026 YYERROR; 4027 } 4028 free($1); 4029 $$.b1 = f; 4030 } 4031 ; 4032 4033 flags : FLAGS flag '/' flag { $$.b1 = $2.b1; $$.b2 = $4.b1; } 4034 | FLAGS '/' flag { $$.b1 = 0; $$.b2 = $3.b1; } 4035 | FLAGS ANY { $$.b1 = 0; $$.b2 = 0; } 4036 ; 4037 4038 icmpspec : ICMPTYPE icmp_item { $$ = $2; } 4039 | ICMPTYPE '{' optnl icmp_list '}' { $$ = $4; } 4040 | ICMP6TYPE icmp6_item { $$ = $2; } 4041 | ICMP6TYPE '{' optnl icmp6_list '}' { $$ = $4; } 4042 ; 4043 4044 icmp_list : icmp_item optnl { $$ = $1; } 4045 | icmp_list comma icmp_item optnl { 4046 $1->tail->next = $3; 4047 $1->tail = $3; 4048 $$ = $1; 4049 } 4050 ; 4051 4052 icmp6_list : icmp6_item optnl { $$ = $1; } 4053 | icmp6_list comma icmp6_item optnl { 4054 $1->tail->next = $3; 4055 $1->tail = $3; 4056 $$ = $1; 4057 } 4058 ; 4059 4060 icmp_item : icmptype { 4061 $$ = calloc(1, sizeof(struct node_icmp)); 4062 if ($$ == NULL) 4063 err(1, "icmp_item: calloc"); 4064 $$->type = $1; 4065 $$->code = 0; 4066 $$->proto = IPPROTO_ICMP; 4067 $$->next = NULL; 4068 $$->tail = $$; 4069 } 4070 | icmptype CODE STRING { 4071 const struct icmpcodeent *p; 4072 4073 if ((p = geticmpcodebyname($1-1, $3, AF_INET)) == NULL) { 4074 yyerror("unknown icmp-code %s", $3); 4075 free($3); 4076 YYERROR; 4077 } 4078 4079 free($3); 4080 $$ = calloc(1, sizeof(struct node_icmp)); 4081 if ($$ == NULL) 4082 err(1, "icmp_item: calloc"); 4083 $$->type = $1; 4084 $$->code = p->code + 1; 4085 $$->proto = IPPROTO_ICMP; 4086 $$->next = NULL; 4087 $$->tail = $$; 4088 } 4089 | icmptype CODE NUMBER { 4090 if ($3 < 0 || $3 > 255) { 4091 yyerror("illegal icmp-code %lu", $3); 4092 YYERROR; 4093 } 4094 $$ = calloc(1, sizeof(struct node_icmp)); 4095 if ($$ == NULL) 4096 err(1, "icmp_item: calloc"); 4097 $$->type = $1; 4098 $$->code = $3 + 1; 4099 $$->proto = IPPROTO_ICMP; 4100 $$->next = NULL; 4101 $$->tail = $$; 4102 } 4103 ; 4104 4105 icmp6_item : icmp6type { 4106 $$ = calloc(1, sizeof(struct node_icmp)); 4107 if ($$ == NULL) 4108 err(1, "icmp_item: calloc"); 4109 $$->type = $1; 4110 $$->code = 0; 4111 $$->proto = IPPROTO_ICMPV6; 4112 $$->next = NULL; 4113 $$->tail = $$; 4114 } 4115 | icmp6type CODE STRING { 4116 const struct icmpcodeent *p; 4117 4118 if ((p = geticmpcodebyname($1-1, $3, AF_INET6)) == NULL) { 4119 yyerror("unknown icmp6-code %s", $3); 4120 free($3); 4121 YYERROR; 4122 } 4123 free($3); 4124 4125 $$ = calloc(1, sizeof(struct node_icmp)); 4126 if ($$ == NULL) 4127 err(1, "icmp_item: calloc"); 4128 $$->type = $1; 4129 $$->code = p->code + 1; 4130 $$->proto = IPPROTO_ICMPV6; 4131 $$->next = NULL; 4132 $$->tail = $$; 4133 } 4134 | icmp6type CODE NUMBER { 4135 if ($3 < 0 || $3 > 255) { 4136 yyerror("illegal icmp-code %lu", $3); 4137 YYERROR; 4138 } 4139 $$ = calloc(1, sizeof(struct node_icmp)); 4140 if ($$ == NULL) 4141 err(1, "icmp_item: calloc"); 4142 $$->type = $1; 4143 $$->code = $3 + 1; 4144 $$->proto = IPPROTO_ICMPV6; 4145 $$->next = NULL; 4146 $$->tail = $$; 4147 } 4148 ; 4149 4150 icmptype : STRING { 4151 const struct icmptypeent *p; 4152 4153 if ((p = geticmptypebyname($1, AF_INET)) == NULL) { 4154 yyerror("unknown icmp-type %s", $1); 4155 free($1); 4156 YYERROR; 4157 } 4158 $$ = p->type + 1; 4159 free($1); 4160 } 4161 | NUMBER { 4162 if ($1 < 0 || $1 > 255) { 4163 yyerror("illegal icmp-type %lu", $1); 4164 YYERROR; 4165 } 4166 $$ = $1 + 1; 4167 } 4168 ; 4169 4170 icmp6type : STRING { 4171 const struct icmptypeent *p; 4172 4173 if ((p = geticmptypebyname($1, AF_INET6)) == 4174 NULL) { 4175 yyerror("unknown icmp6-type %s", $1); 4176 free($1); 4177 YYERROR; 4178 } 4179 $$ = p->type + 1; 4180 free($1); 4181 } 4182 | NUMBER { 4183 if ($1 < 0 || $1 > 255) { 4184 yyerror("illegal icmp6-type %lu", $1); 4185 YYERROR; 4186 } 4187 $$ = $1 + 1; 4188 } 4189 ; 4190 4191 tos : STRING { 4192 int val; 4193 char *end; 4194 4195 if (map_tos($1, &val)) 4196 $$ = val; 4197 else if ($1[0] == '0' && $1[1] == 'x') { 4198 errno = 0; 4199 $$ = strtoul($1, &end, 16); 4200 if (errno || *end != '\0') 4201 $$ = 256; 4202 } else 4203 $$ = 256; /* flag bad argument */ 4204 if ($$ < 0 || $$ > 255) { 4205 yyerror("illegal tos value %s", $1); 4206 free($1); 4207 YYERROR; 4208 } 4209 free($1); 4210 } 4211 | NUMBER { 4212 $$ = $1; 4213 if ($$ < 0 || $$ > 255) { 4214 yyerror("illegal tos value %s", $1); 4215 YYERROR; 4216 } 4217 } 4218 ; 4219 4220 sourcetrack : SOURCETRACK { $$ = PF_SRCTRACK; } 4221 | SOURCETRACK GLOBAL { $$ = PF_SRCTRACK_GLOBAL; } 4222 | SOURCETRACK RULE { $$ = PF_SRCTRACK_RULE; } 4223 ; 4224 4225 statelock : IFBOUND { 4226 $$ = PFRULE_IFBOUND; 4227 } 4228 | FLOATING { 4229 $$ = 0; 4230 } 4231 ; 4232 4233 keep : NO STATE { 4234 $$.action = 0; 4235 $$.options = NULL; 4236 } 4237 | KEEP STATE state_opt_spec { 4238 $$.action = PF_STATE_NORMAL; 4239 $$.options = $3; 4240 } 4241 | MODULATE STATE state_opt_spec { 4242 $$.action = PF_STATE_MODULATE; 4243 $$.options = $3; 4244 } 4245 | SYNPROXY STATE state_opt_spec { 4246 $$.action = PF_STATE_SYNPROXY; 4247 $$.options = $3; 4248 } 4249 ; 4250 4251 flush : /* empty */ { $$ = 0; } 4252 | FLUSH { $$ = PF_FLUSH; } 4253 | FLUSH GLOBAL { 4254 $$ = PF_FLUSH | PF_FLUSH_GLOBAL; 4255 } 4256 ; 4257 4258 state_opt_spec : '(' state_opt_list ')' { $$ = $2; } 4259 | /* empty */ { $$ = NULL; } 4260 ; 4261 4262 state_opt_list : state_opt_item { $$ = $1; } 4263 | state_opt_list comma state_opt_item { 4264 $1->tail->next = $3; 4265 $1->tail = $3; 4266 $$ = $1; 4267 } 4268 ; 4269 4270 state_opt_item : MAXIMUM NUMBER { 4271 if ($2 < 0 || $2 > UINT_MAX) { 4272 yyerror("only positive values permitted"); 4273 YYERROR; 4274 } 4275 $$ = calloc(1, sizeof(struct node_state_opt)); 4276 if ($$ == NULL) 4277 err(1, "state_opt_item: calloc"); 4278 $$->type = PF_STATE_OPT_MAX; 4279 $$->data.max_states = $2; 4280 $$->next = NULL; 4281 $$->tail = $$; 4282 } 4283 | NOSYNC { 4284 $$ = calloc(1, sizeof(struct node_state_opt)); 4285 if ($$ == NULL) 4286 err(1, "state_opt_item: calloc"); 4287 $$->type = PF_STATE_OPT_NOSYNC; 4288 $$->next = NULL; 4289 $$->tail = $$; 4290 } 4291 | MAXSRCSTATES NUMBER { 4292 if ($2 < 0 || $2 > UINT_MAX) { 4293 yyerror("only positive values permitted"); 4294 YYERROR; 4295 } 4296 $$ = calloc(1, sizeof(struct node_state_opt)); 4297 if ($$ == NULL) 4298 err(1, "state_opt_item: calloc"); 4299 $$->type = PF_STATE_OPT_MAX_SRC_STATES; 4300 $$->data.max_src_states = $2; 4301 $$->next = NULL; 4302 $$->tail = $$; 4303 } 4304 | MAXSRCCONN NUMBER { 4305 if ($2 < 0 || $2 > UINT_MAX) { 4306 yyerror("only positive values permitted"); 4307 YYERROR; 4308 } 4309 $$ = calloc(1, sizeof(struct node_state_opt)); 4310 if ($$ == NULL) 4311 err(1, "state_opt_item: calloc"); 4312 $$->type = PF_STATE_OPT_MAX_SRC_CONN; 4313 $$->data.max_src_conn = $2; 4314 $$->next = NULL; 4315 $$->tail = $$; 4316 } 4317 | MAXSRCCONNRATE NUMBER '/' NUMBER { 4318 if ($2 < 0 || $2 > UINT_MAX || 4319 $4 < 0 || $4 > UINT_MAX) { 4320 yyerror("only positive values permitted"); 4321 YYERROR; 4322 } 4323 $$ = calloc(1, sizeof(struct node_state_opt)); 4324 if ($$ == NULL) 4325 err(1, "state_opt_item: calloc"); 4326 $$->type = PF_STATE_OPT_MAX_SRC_CONN_RATE; 4327 $$->data.max_src_conn_rate.limit = $2; 4328 $$->data.max_src_conn_rate.seconds = $4; 4329 $$->next = NULL; 4330 $$->tail = $$; 4331 } 4332 | OVERLOAD '<' STRING '>' flush { 4333 if (strlen($3) >= PF_TABLE_NAME_SIZE) { 4334 yyerror("table name '%s' too long", $3); 4335 free($3); 4336 YYERROR; 4337 } 4338 $$ = calloc(1, sizeof(struct node_state_opt)); 4339 if ($$ == NULL) 4340 err(1, "state_opt_item: calloc"); 4341 if (strlcpy($$->data.overload.tblname, $3, 4342 PF_TABLE_NAME_SIZE) >= PF_TABLE_NAME_SIZE) 4343 errx(1, "state_opt_item: strlcpy"); 4344 free($3); 4345 $$->type = PF_STATE_OPT_OVERLOAD; 4346 $$->data.overload.flush = $5; 4347 $$->next = NULL; 4348 $$->tail = $$; 4349 } 4350 | MAXSRCNODES NUMBER { 4351 if ($2 < 0 || $2 > UINT_MAX) { 4352 yyerror("only positive values permitted"); 4353 YYERROR; 4354 } 4355 $$ = calloc(1, sizeof(struct node_state_opt)); 4356 if ($$ == NULL) 4357 err(1, "state_opt_item: calloc"); 4358 $$->type = PF_STATE_OPT_MAX_SRC_NODES; 4359 $$->data.max_src_nodes = $2; 4360 $$->next = NULL; 4361 $$->tail = $$; 4362 } 4363 | sourcetrack { 4364 $$ = calloc(1, sizeof(struct node_state_opt)); 4365 if ($$ == NULL) 4366 err(1, "state_opt_item: calloc"); 4367 $$->type = PF_STATE_OPT_SRCTRACK; 4368 $$->data.src_track = $1; 4369 $$->next = NULL; 4370 $$->tail = $$; 4371 } 4372 | statelock { 4373 $$ = calloc(1, sizeof(struct node_state_opt)); 4374 if ($$ == NULL) 4375 err(1, "state_opt_item: calloc"); 4376 $$->type = PF_STATE_OPT_STATELOCK; 4377 $$->data.statelock = $1; 4378 $$->next = NULL; 4379 $$->tail = $$; 4380 } 4381 | SLOPPY { 4382 $$ = calloc(1, sizeof(struct node_state_opt)); 4383 if ($$ == NULL) 4384 err(1, "state_opt_item: calloc"); 4385 $$->type = PF_STATE_OPT_SLOPPY; 4386 $$->next = NULL; 4387 $$->tail = $$; 4388 } 4389 | PFLOW { 4390 $$ = calloc(1, sizeof(struct node_state_opt)); 4391 if ($$ == NULL) 4392 err(1, "state_opt_item: calloc"); 4393 $$->type = PF_STATE_OPT_PFLOW; 4394 $$->next = NULL; 4395 $$->tail = $$; 4396 } 4397 | STRING NUMBER { 4398 int i; 4399 4400 if ($2 < 0 || $2 > UINT_MAX) { 4401 yyerror("only positive values permitted"); 4402 YYERROR; 4403 } 4404 for (i = 0; pf_timeouts[i].name && 4405 strcmp(pf_timeouts[i].name, $1); ++i) 4406 ; /* nothing */ 4407 if (!pf_timeouts[i].name) { 4408 yyerror("illegal timeout name %s", $1); 4409 free($1); 4410 YYERROR; 4411 } 4412 if (strchr(pf_timeouts[i].name, '.') == NULL) { 4413 yyerror("illegal state timeout %s", $1); 4414 free($1); 4415 YYERROR; 4416 } 4417 free($1); 4418 $$ = calloc(1, sizeof(struct node_state_opt)); 4419 if ($$ == NULL) 4420 err(1, "state_opt_item: calloc"); 4421 $$->type = PF_STATE_OPT_TIMEOUT; 4422 $$->data.timeout.number = pf_timeouts[i].timeout; 4423 $$->data.timeout.seconds = $2; 4424 $$->next = NULL; 4425 $$->tail = $$; 4426 } 4427 ; 4428 4429 label : LABEL STRING { 4430 $$ = $2; 4431 } 4432 ; 4433 4434 etherqname : QUEUE STRING { 4435 $$.qname = $2; 4436 } 4437 | QUEUE '(' STRING ')' { 4438 $$.qname = $3; 4439 } 4440 ; 4441 4442 qname : QUEUE STRING { 4443 $$.qname = $2; 4444 $$.pqname = NULL; 4445 } 4446 | QUEUE '(' STRING ')' { 4447 $$.qname = $3; 4448 $$.pqname = NULL; 4449 } 4450 | QUEUE '(' STRING comma STRING ')' { 4451 $$.qname = $3; 4452 $$.pqname = $5; 4453 } 4454 ; 4455 4456 no : /* empty */ { $$ = 0; } 4457 | NO { $$ = 1; } 4458 ; 4459 4460 portstar : numberstring { 4461 if (parseport($1, &$$, PPORT_RANGE|PPORT_STAR) == -1) { 4462 free($1); 4463 YYERROR; 4464 } 4465 free($1); 4466 } 4467 ; 4468 4469 redirspec : host { $$ = $1; } 4470 | '{' optnl redir_host_list '}' { $$ = $3; } 4471 ; 4472 4473 redir_host_list : host optnl { $$ = $1; } 4474 | redir_host_list comma host optnl { 4475 $1->tail->next = $3; 4476 $1->tail = $3->tail; 4477 $$ = $1; 4478 } 4479 ; 4480 4481 redirpool : /* empty */ { $$ = NULL; } 4482 | ARROW redirspec { 4483 $$ = calloc(1, sizeof(struct redirection)); 4484 if ($$ == NULL) 4485 err(1, "redirection: calloc"); 4486 $$->host = $2; 4487 $$->rport.a = $$->rport.b = $$->rport.t = 0; 4488 } 4489 | ARROW redirspec PORT portstar { 4490 $$ = calloc(1, sizeof(struct redirection)); 4491 if ($$ == NULL) 4492 err(1, "redirection: calloc"); 4493 $$->host = $2; 4494 $$->rport = $4; 4495 } 4496 ; 4497 4498 hashkey : /* empty */ 4499 { 4500 $$ = calloc(1, sizeof(struct pf_poolhashkey)); 4501 if ($$ == NULL) 4502 err(1, "hashkey: calloc"); 4503 $$->key32[0] = arc4random(); 4504 $$->key32[1] = arc4random(); 4505 $$->key32[2] = arc4random(); 4506 $$->key32[3] = arc4random(); 4507 } 4508 | string 4509 { 4510 if (!strncmp($1, "0x", 2)) { 4511 if (strlen($1) != 34) { 4512 free($1); 4513 yyerror("hex key must be 128 bits " 4514 "(32 hex digits) long"); 4515 YYERROR; 4516 } 4517 $$ = calloc(1, sizeof(struct pf_poolhashkey)); 4518 if ($$ == NULL) 4519 err(1, "hashkey: calloc"); 4520 4521 if (sscanf($1, "0x%8x%8x%8x%8x", 4522 &$$->key32[0], &$$->key32[1], 4523 &$$->key32[2], &$$->key32[3]) != 4) { 4524 free($$); 4525 free($1); 4526 yyerror("invalid hex key"); 4527 YYERROR; 4528 } 4529 } else { 4530 MD5_CTX context; 4531 4532 $$ = calloc(1, sizeof(struct pf_poolhashkey)); 4533 if ($$ == NULL) 4534 err(1, "hashkey: calloc"); 4535 MD5Init(&context); 4536 MD5Update(&context, (unsigned char *)$1, 4537 strlen($1)); 4538 MD5Final((unsigned char *)$$, &context); 4539 HTONL($$->key32[0]); 4540 HTONL($$->key32[1]); 4541 HTONL($$->key32[2]); 4542 HTONL($$->key32[3]); 4543 } 4544 free($1); 4545 } 4546 ; 4547 4548 pool_opts : { bzero(&pool_opts, sizeof pool_opts); } 4549 pool_opts_l 4550 { $$ = pool_opts; } 4551 | /* empty */ { 4552 bzero(&pool_opts, sizeof pool_opts); 4553 $$ = pool_opts; 4554 } 4555 ; 4556 4557 pool_opts_l : pool_opts_l pool_opt 4558 | pool_opt 4559 ; 4560 4561 pool_opt : BITMASK { 4562 if (pool_opts.type) { 4563 yyerror("pool type cannot be redefined"); 4564 YYERROR; 4565 } 4566 pool_opts.type = PF_POOL_BITMASK; 4567 } 4568 | RANDOM { 4569 if (pool_opts.type) { 4570 yyerror("pool type cannot be redefined"); 4571 YYERROR; 4572 } 4573 pool_opts.type = PF_POOL_RANDOM; 4574 } 4575 | SOURCEHASH hashkey { 4576 if (pool_opts.type) { 4577 yyerror("pool type cannot be redefined"); 4578 YYERROR; 4579 } 4580 pool_opts.type = PF_POOL_SRCHASH; 4581 pool_opts.key = $2; 4582 } 4583 | ROUNDROBIN { 4584 if (pool_opts.type) { 4585 yyerror("pool type cannot be redefined"); 4586 YYERROR; 4587 } 4588 pool_opts.type = PF_POOL_ROUNDROBIN; 4589 } 4590 | STATICPORT { 4591 if (pool_opts.staticport) { 4592 yyerror("static-port cannot be redefined"); 4593 YYERROR; 4594 } 4595 pool_opts.staticport = 1; 4596 } 4597 | STICKYADDRESS { 4598 if (pool_opts.marker & POM_STICKYADDRESS) { 4599 yyerror("sticky-address cannot be redefined"); 4600 YYERROR; 4601 } 4602 pool_opts.marker |= POM_STICKYADDRESS; 4603 pool_opts.opts |= PF_POOL_STICKYADDR; 4604 } 4605 | ENDPI { 4606 if (pool_opts.marker & POM_ENDPI) { 4607 yyerror("endpoint-independent cannot be redefined"); 4608 YYERROR; 4609 } 4610 pool_opts.marker |= POM_ENDPI; 4611 pool_opts.opts |= PF_POOL_ENDPI; 4612 } 4613 | MAPEPORTSET number '/' number '/' number { 4614 if (pool_opts.mape.offset) { 4615 yyerror("map-e-portset cannot be redefined"); 4616 YYERROR; 4617 } 4618 if (pool_opts.type) { 4619 yyerror("map-e-portset cannot be used with " 4620 "address pools"); 4621 YYERROR; 4622 } 4623 if ($2 <= 0 || $2 >= 16) { 4624 yyerror("MAP-E PSID offset must be 1-15"); 4625 YYERROR; 4626 } 4627 if ($4 < 0 || $4 >= 16 || $2 + $4 > 16) { 4628 yyerror("Invalid MAP-E PSID length"); 4629 YYERROR; 4630 } else if ($4 == 0) { 4631 yyerror("PSID Length = 0: this means" 4632 " you do not need MAP-E"); 4633 YYERROR; 4634 } 4635 if ($6 < 0 || $6 > 65535) { 4636 yyerror("Invalid MAP-E PSID"); 4637 YYERROR; 4638 } 4639 pool_opts.mape.offset = $2; 4640 pool_opts.mape.psidlen = $4; 4641 pool_opts.mape.psid = $6; 4642 } 4643 ; 4644 4645 redirection : /* empty */ { $$ = NULL; } 4646 | ARROW host { 4647 $$ = calloc(1, sizeof(struct redirection)); 4648 if ($$ == NULL) 4649 err(1, "redirection: calloc"); 4650 $$->host = $2; 4651 $$->rport.a = $$->rport.b = $$->rport.t = 0; 4652 } 4653 | ARROW host PORT portstar { 4654 $$ = calloc(1, sizeof(struct redirection)); 4655 if ($$ == NULL) 4656 err(1, "redirection: calloc"); 4657 $$->host = $2; 4658 $$->rport = $4; 4659 } 4660 ; 4661 4662 natpasslog : /* empty */ { $$.b1 = $$.b2 = 0; $$.w2 = 0; } 4663 | PASS { $$.b1 = 1; $$.b2 = 0; $$.w2 = 0; } 4664 | PASS log { $$.b1 = 1; $$.b2 = $2.log; $$.w2 = $2.logif; } 4665 | log { $$.b1 = 0; $$.b2 = $1.log; $$.w2 = $1.logif; } 4666 ; 4667 4668 nataction : no NAT natpasslog { 4669 if ($1 && $3.b1) { 4670 yyerror("\"pass\" not valid with \"no\""); 4671 YYERROR; 4672 } 4673 if ($1) 4674 $$.b1 = PF_NONAT; 4675 else 4676 $$.b1 = PF_NAT; 4677 $$.b2 = $3.b1; 4678 $$.w = $3.b2; 4679 $$.w2 = $3.w2; 4680 } 4681 | no RDR natpasslog { 4682 if ($1 && $3.b1) { 4683 yyerror("\"pass\" not valid with \"no\""); 4684 YYERROR; 4685 } 4686 if ($1) 4687 $$.b1 = PF_NORDR; 4688 else 4689 $$.b1 = PF_RDR; 4690 $$.b2 = $3.b1; 4691 $$.w = $3.b2; 4692 $$.w2 = $3.w2; 4693 } 4694 ; 4695 4696 natrule : nataction interface af proto fromto tag tagged rtable 4697 redirpool pool_opts 4698 { 4699 struct pfctl_rule r; 4700 struct node_state_opt *o; 4701 4702 if (check_rulestate(PFCTL_STATE_NAT)) 4703 YYERROR; 4704 4705 memset(&r, 0, sizeof(r)); 4706 4707 r.action = $1.b1; 4708 r.natpass = $1.b2; 4709 r.log = $1.w; 4710 r.logif = $1.w2; 4711 r.af = $3; 4712 4713 if (!r.af) { 4714 if ($5.src.host && $5.src.host->af && 4715 !$5.src.host->ifindex) 4716 r.af = $5.src.host->af; 4717 else if ($5.dst.host && $5.dst.host->af && 4718 !$5.dst.host->ifindex) 4719 r.af = $5.dst.host->af; 4720 } 4721 4722 if ($6 != NULL) 4723 if (strlcpy(r.tagname, $6, PF_TAG_NAME_SIZE) >= 4724 PF_TAG_NAME_SIZE) { 4725 yyerror("tag too long, max %u chars", 4726 PF_TAG_NAME_SIZE - 1); 4727 YYERROR; 4728 } 4729 4730 if ($7.name) 4731 if (strlcpy(r.match_tagname, $7.name, 4732 PF_TAG_NAME_SIZE) >= PF_TAG_NAME_SIZE) { 4733 yyerror("tag too long, max %u chars", 4734 PF_TAG_NAME_SIZE - 1); 4735 YYERROR; 4736 } 4737 r.match_tag_not = $7.neg; 4738 r.rtableid = $8; 4739 4740 if (r.action == PF_NONAT || r.action == PF_NORDR) { 4741 if ($9 != NULL) { 4742 yyerror("translation rule with 'no' " 4743 "does not need '->'"); 4744 YYERROR; 4745 } 4746 } else { 4747 if ($9 == NULL || $9->host == NULL) { 4748 yyerror("translation rule requires '-> " 4749 "address'"); 4750 YYERROR; 4751 } 4752 if (!r.af && ! $9->host->ifindex) 4753 r.af = $9->host->af; 4754 4755 remove_invalid_hosts(&$9->host, &r.af); 4756 if (invalid_redirect($9->host, r.af)) 4757 YYERROR; 4758 if ($9->host->addr.type == PF_ADDR_DYNIFTL) { 4759 if (($9->host = gen_dynnode($9->host, r.af)) == NULL) 4760 err(1, "calloc"); 4761 } 4762 if (check_netmask($9->host, r.af)) 4763 YYERROR; 4764 4765 r.rpool.proxy_port[0] = ntohs($9->rport.a); 4766 4767 switch (r.action) { 4768 case PF_RDR: 4769 if (!$9->rport.b && $9->rport.t && 4770 $5.dst.port != NULL) { 4771 r.rpool.proxy_port[1] = 4772 ntohs($9->rport.a) + 4773 (ntohs( 4774 $5.dst.port->port[1]) - 4775 ntohs( 4776 $5.dst.port->port[0])); 4777 } else 4778 r.rpool.proxy_port[1] = 4779 ntohs($9->rport.b); 4780 break; 4781 case PF_NAT: 4782 r.rpool.proxy_port[1] = 4783 ntohs($9->rport.b); 4784 if (!r.rpool.proxy_port[0] && 4785 !r.rpool.proxy_port[1]) { 4786 r.rpool.proxy_port[0] = 4787 PF_NAT_PROXY_PORT_LOW; 4788 r.rpool.proxy_port[1] = 4789 PF_NAT_PROXY_PORT_HIGH; 4790 } else if (!r.rpool.proxy_port[1]) 4791 r.rpool.proxy_port[1] = 4792 r.rpool.proxy_port[0]; 4793 break; 4794 default: 4795 break; 4796 } 4797 4798 r.rpool.opts = $10.type; 4799 if ((r.rpool.opts & PF_POOL_TYPEMASK) == 4800 PF_POOL_NONE && ($9->host->next != NULL || 4801 $9->host->addr.type == PF_ADDR_TABLE || 4802 DYNIF_MULTIADDR($9->host->addr))) 4803 r.rpool.opts = PF_POOL_ROUNDROBIN; 4804 if ((r.rpool.opts & PF_POOL_TYPEMASK) != 4805 PF_POOL_ROUNDROBIN && 4806 disallow_table($9->host, "tables are only " 4807 "supported in round-robin redirection " 4808 "pools")) 4809 YYERROR; 4810 if ((r.rpool.opts & PF_POOL_TYPEMASK) != 4811 PF_POOL_ROUNDROBIN && 4812 disallow_alias($9->host, "interface (%s) " 4813 "is only supported in round-robin " 4814 "redirection pools")) 4815 YYERROR; 4816 if ($9->host->next != NULL) { 4817 if ((r.rpool.opts & PF_POOL_TYPEMASK) != 4818 PF_POOL_ROUNDROBIN) { 4819 yyerror("only round-robin " 4820 "valid for multiple " 4821 "redirection addresses"); 4822 YYERROR; 4823 } 4824 } 4825 } 4826 4827 if ($10.key != NULL) 4828 memcpy(&r.rpool.key, $10.key, 4829 sizeof(struct pf_poolhashkey)); 4830 4831 if ($10.opts) 4832 r.rpool.opts |= $10.opts; 4833 4834 if ($10.staticport) { 4835 if (r.action != PF_NAT) { 4836 yyerror("the 'static-port' option is " 4837 "only valid with nat rules"); 4838 YYERROR; 4839 } 4840 if (r.rpool.proxy_port[0] != 4841 PF_NAT_PROXY_PORT_LOW && 4842 r.rpool.proxy_port[1] != 4843 PF_NAT_PROXY_PORT_HIGH) { 4844 yyerror("the 'static-port' option can't" 4845 " be used when specifying a port" 4846 " range"); 4847 YYERROR; 4848 } 4849 r.rpool.proxy_port[0] = 0; 4850 r.rpool.proxy_port[1] = 0; 4851 } 4852 4853 if ($10.mape.offset) { 4854 if (r.action != PF_NAT) { 4855 yyerror("the 'map-e-portset' option is" 4856 " only valid with nat rules"); 4857 YYERROR; 4858 } 4859 if ($10.staticport) { 4860 yyerror("the 'map-e-portset' option" 4861 " can't be used 'static-port'"); 4862 YYERROR; 4863 } 4864 if (r.rpool.proxy_port[0] != 4865 PF_NAT_PROXY_PORT_LOW && 4866 r.rpool.proxy_port[1] != 4867 PF_NAT_PROXY_PORT_HIGH) { 4868 yyerror("the 'map-e-portset' option" 4869 " can't be used when specifying" 4870 " a port range"); 4871 YYERROR; 4872 } 4873 r.rpool.mape = $10.mape; 4874 } 4875 4876 o = keep_state_defaults; 4877 while (o) { 4878 switch (o->type) { 4879 case PF_STATE_OPT_PFLOW: 4880 if (r.rule_flag & PFRULE_PFLOW) { 4881 yyerror("state pflow option: " 4882 "multiple definitions"); 4883 YYERROR; 4884 } 4885 r.rule_flag |= PFRULE_PFLOW; 4886 break; 4887 } 4888 o = o->next; 4889 } 4890 4891 expand_rule(&r, $2, $9 == NULL ? NULL : $9->host, $4, 4892 $5.src_os, $5.src.host, $5.src.port, $5.dst.host, 4893 $5.dst.port, 0, 0, 0, 0, ""); 4894 free($9); 4895 } 4896 ; 4897 4898 binatrule : no BINAT natpasslog interface af proto FROM ipspec toipspec tag 4899 tagged rtable redirection 4900 { 4901 struct pfctl_rule binat; 4902 struct pf_pooladdr *pa; 4903 4904 if (check_rulestate(PFCTL_STATE_NAT)) 4905 YYERROR; 4906 if (disallow_urpf_failed($9, "\"urpf-failed\" is not " 4907 "permitted as a binat destination")) 4908 YYERROR; 4909 4910 memset(&binat, 0, sizeof(binat)); 4911 4912 if ($1 && $3.b1) { 4913 yyerror("\"pass\" not valid with \"no\""); 4914 YYERROR; 4915 } 4916 if ($1) 4917 binat.action = PF_NOBINAT; 4918 else 4919 binat.action = PF_BINAT; 4920 binat.natpass = $3.b1; 4921 binat.log = $3.b2; 4922 binat.logif = $3.w2; 4923 binat.af = $5; 4924 if (!binat.af && $8 != NULL && $8->af) 4925 binat.af = $8->af; 4926 if (!binat.af && $9 != NULL && $9->af) 4927 binat.af = $9->af; 4928 4929 if (!binat.af && $13 != NULL && $13->host) 4930 binat.af = $13->host->af; 4931 if (!binat.af) { 4932 yyerror("address family (inet/inet6) " 4933 "undefined"); 4934 YYERROR; 4935 } 4936 4937 if ($4 != NULL) { 4938 memcpy(binat.ifname, $4->ifname, 4939 sizeof(binat.ifname)); 4940 binat.ifnot = $4->not; 4941 free($4); 4942 } 4943 4944 if ($10 != NULL) 4945 if (strlcpy(binat.tagname, $10, 4946 PF_TAG_NAME_SIZE) >= PF_TAG_NAME_SIZE) { 4947 yyerror("tag too long, max %u chars", 4948 PF_TAG_NAME_SIZE - 1); 4949 YYERROR; 4950 } 4951 if ($11.name) 4952 if (strlcpy(binat.match_tagname, $11.name, 4953 PF_TAG_NAME_SIZE) >= PF_TAG_NAME_SIZE) { 4954 yyerror("tag too long, max %u chars", 4955 PF_TAG_NAME_SIZE - 1); 4956 YYERROR; 4957 } 4958 binat.match_tag_not = $11.neg; 4959 binat.rtableid = $12; 4960 4961 if ($6 != NULL) { 4962 binat.proto = $6->proto; 4963 free($6); 4964 } 4965 4966 if ($8 != NULL && disallow_table($8, "invalid use of " 4967 "table <%s> as the source address of a binat rule")) 4968 YYERROR; 4969 if ($8 != NULL && disallow_alias($8, "invalid use of " 4970 "interface (%s) as the source address of a binat " 4971 "rule")) 4972 YYERROR; 4973 if ($13 != NULL && $13->host != NULL && disallow_table( 4974 $13->host, "invalid use of table <%s> as the " 4975 "redirect address of a binat rule")) 4976 YYERROR; 4977 if ($13 != NULL && $13->host != NULL && disallow_alias( 4978 $13->host, "invalid use of interface (%s) as the " 4979 "redirect address of a binat rule")) 4980 YYERROR; 4981 4982 if ($8 != NULL) { 4983 if ($8->next) { 4984 yyerror("multiple binat ip addresses"); 4985 YYERROR; 4986 } 4987 if ($8->addr.type == PF_ADDR_DYNIFTL) 4988 $8->af = binat.af; 4989 if ($8->af != binat.af) { 4990 yyerror("binat ip versions must match"); 4991 YYERROR; 4992 } 4993 if ($8->addr.type == PF_ADDR_DYNIFTL) { 4994 if (($8 = gen_dynnode($8, binat.af)) == NULL) 4995 err(1, "calloc"); 4996 } 4997 if (check_netmask($8, binat.af)) 4998 YYERROR; 4999 memcpy(&binat.src.addr, &$8->addr, 5000 sizeof(binat.src.addr)); 5001 free($8); 5002 } 5003 if ($9 != NULL) { 5004 if ($9->next) { 5005 yyerror("multiple binat ip addresses"); 5006 YYERROR; 5007 } 5008 if ($9->af != binat.af && $9->af) { 5009 yyerror("binat ip versions must match"); 5010 YYERROR; 5011 } 5012 if ($9->addr.type == PF_ADDR_DYNIFTL) { 5013 if (($9 = gen_dynnode($9, binat.af)) == NULL) 5014 err(1, "calloc"); 5015 } 5016 if (check_netmask($9, binat.af)) 5017 YYERROR; 5018 memcpy(&binat.dst.addr, &$9->addr, 5019 sizeof(binat.dst.addr)); 5020 binat.dst.neg = $9->not; 5021 free($9); 5022 } 5023 5024 if (binat.action == PF_NOBINAT) { 5025 if ($13 != NULL) { 5026 yyerror("'no binat' rule does not need" 5027 " '->'"); 5028 YYERROR; 5029 } 5030 } else { 5031 if ($13 == NULL || $13->host == NULL) { 5032 yyerror("'binat' rule requires" 5033 " '-> address'"); 5034 YYERROR; 5035 } 5036 5037 remove_invalid_hosts(&$13->host, &binat.af); 5038 if (invalid_redirect($13->host, binat.af)) 5039 YYERROR; 5040 if ($13->host->next != NULL) { 5041 yyerror("binat rule must redirect to " 5042 "a single address"); 5043 YYERROR; 5044 } 5045 if ($13->host->addr.type == PF_ADDR_DYNIFTL) { 5046 if (($13->host = gen_dynnode($13->host, binat.af)) == NULL) 5047 err(1, "calloc"); 5048 } 5049 if (check_netmask($13->host, binat.af)) 5050 YYERROR; 5051 5052 if (!PF_AZERO(&binat.src.addr.v.a.mask, 5053 binat.af) && 5054 !PF_AEQ(&binat.src.addr.v.a.mask, 5055 &$13->host->addr.v.a.mask, binat.af)) { 5056 yyerror("'binat' source mask and " 5057 "redirect mask must be the same"); 5058 YYERROR; 5059 } 5060 5061 TAILQ_INIT(&binat.rpool.list); 5062 pa = calloc(1, sizeof(struct pf_pooladdr)); 5063 if (pa == NULL) 5064 err(1, "binat: calloc"); 5065 pa->addr = $13->host->addr; 5066 pa->ifname[0] = 0; 5067 TAILQ_INSERT_TAIL(&binat.rpool.list, 5068 pa, entries); 5069 5070 free($13); 5071 } 5072 5073 pfctl_append_rule(pf, &binat, ""); 5074 } 5075 ; 5076 5077 tag : /* empty */ { $$ = NULL; } 5078 | TAG STRING { $$ = $2; } 5079 ; 5080 5081 tagged : /* empty */ { $$.neg = 0; $$.name = NULL; } 5082 | not TAGGED string { $$.neg = $1; $$.name = $3; } 5083 ; 5084 5085 rtable : /* empty */ { $$ = -1; } 5086 | RTABLE NUMBER { 5087 if ($2 < 0 || $2 > rt_tableid_max()) { 5088 yyerror("invalid rtable id"); 5089 YYERROR; 5090 } 5091 $$ = $2; 5092 } 5093 ; 5094 5095 route_host : STRING { 5096 $$ = calloc(1, sizeof(struct node_host)); 5097 if ($$ == NULL) 5098 err(1, "route_host: calloc"); 5099 if (strlen($1) >= IFNAMSIZ) { 5100 yyerror("interface name too long"); 5101 YYERROR; 5102 } 5103 $$->ifname = strdup($1); 5104 set_ipmask($$, 128); 5105 $$->next = NULL; 5106 $$->tail = $$; 5107 } 5108 | '(' STRING host ')' { 5109 struct node_host *n; 5110 5111 $$ = $3; 5112 for (n = $3; n != NULL; n = n->next) { 5113 if (strlen($2) >= IFNAMSIZ) { 5114 yyerror("interface name too long"); 5115 YYERROR; 5116 } 5117 n->ifname = strdup($2); 5118 } 5119 } 5120 ; 5121 5122 route_host_list : route_host optnl { $$ = $1; } 5123 | route_host_list comma route_host optnl { 5124 if ($1->af == 0) 5125 $1->af = $3->af; 5126 if ($1->af != $3->af) { 5127 yyerror("all pool addresses must be in the " 5128 "same address family"); 5129 YYERROR; 5130 } 5131 $1->tail->next = $3; 5132 $1->tail = $3->tail; 5133 $$ = $1; 5134 } 5135 ; 5136 5137 routespec : route_host { $$ = $1; } 5138 | '{' optnl route_host_list '}' { $$ = $3; } 5139 ; 5140 5141 route : /* empty */ { 5142 $$.host = NULL; 5143 $$.rt = 0; 5144 $$.pool_opts = 0; 5145 } 5146 | FASTROUTE { 5147 /* backwards-compat */ 5148 $$.host = NULL; 5149 $$.rt = 0; 5150 $$.pool_opts = 0; 5151 } 5152 | ROUTETO routespec pool_opts { 5153 $$.host = $2; 5154 $$.rt = PF_ROUTETO; 5155 $$.pool_opts = $3.type | $3.opts; 5156 if ($3.key != NULL) 5157 $$.key = $3.key; 5158 } 5159 | REPLYTO routespec pool_opts { 5160 $$.host = $2; 5161 $$.rt = PF_REPLYTO; 5162 $$.pool_opts = $3.type | $3.opts; 5163 if ($3.key != NULL) 5164 $$.key = $3.key; 5165 } 5166 | DUPTO routespec pool_opts { 5167 $$.host = $2; 5168 $$.rt = PF_DUPTO; 5169 $$.pool_opts = $3.type | $3.opts; 5170 if ($3.key != NULL) 5171 $$.key = $3.key; 5172 } 5173 ; 5174 5175 timeout_spec : STRING NUMBER 5176 { 5177 if (check_rulestate(PFCTL_STATE_OPTION)) { 5178 free($1); 5179 YYERROR; 5180 } 5181 if ($2 < 0 || $2 > UINT_MAX) { 5182 yyerror("only positive values permitted"); 5183 YYERROR; 5184 } 5185 if (pfctl_apply_timeout(pf, $1, $2, 0) != 0) { 5186 yyerror("unknown timeout %s", $1); 5187 free($1); 5188 YYERROR; 5189 } 5190 free($1); 5191 } 5192 | INTERVAL NUMBER { 5193 if (check_rulestate(PFCTL_STATE_OPTION)) 5194 YYERROR; 5195 if ($2 < 0 || $2 > UINT_MAX) { 5196 yyerror("only positive values permitted"); 5197 YYERROR; 5198 } 5199 if (pfctl_apply_timeout(pf, "interval", $2, 0) != 0) 5200 YYERROR; 5201 } 5202 ; 5203 5204 timeout_list : timeout_list comma timeout_spec optnl 5205 | timeout_spec optnl 5206 ; 5207 5208 limit_spec : STRING NUMBER 5209 { 5210 if (check_rulestate(PFCTL_STATE_OPTION)) { 5211 free($1); 5212 YYERROR; 5213 } 5214 if ($2 < 0 || $2 > UINT_MAX) { 5215 yyerror("only positive values permitted"); 5216 YYERROR; 5217 } 5218 if (pfctl_apply_limit(pf, $1, $2) != 0) { 5219 yyerror("unable to set limit %s %u", $1, $2); 5220 free($1); 5221 YYERROR; 5222 } 5223 free($1); 5224 } 5225 ; 5226 5227 limit_list : limit_list comma limit_spec optnl 5228 | limit_spec optnl 5229 ; 5230 5231 comma : ',' 5232 | /* empty */ 5233 ; 5234 5235 yesno : NO { $$ = 0; } 5236 | STRING { 5237 if (!strcmp($1, "yes")) 5238 $$ = 1; 5239 else { 5240 yyerror("invalid value '%s', expected 'yes' " 5241 "or 'no'", $1); 5242 free($1); 5243 YYERROR; 5244 } 5245 free($1); 5246 } 5247 ; 5248 5249 unaryop : '=' { $$ = PF_OP_EQ; } 5250 | '!' '=' { $$ = PF_OP_NE; } 5251 | '<' '=' { $$ = PF_OP_LE; } 5252 | '<' { $$ = PF_OP_LT; } 5253 | '>' '=' { $$ = PF_OP_GE; } 5254 | '>' { $$ = PF_OP_GT; } 5255 ; 5256 5257 %% 5258 5259 int 5260 yyerror(const char *fmt, ...) 5261 { 5262 va_list ap; 5263 5264 file->errors++; 5265 va_start(ap, fmt); 5266 fprintf(stderr, "%s:%d: ", file->name, yylval.lineno); 5267 vfprintf(stderr, fmt, ap); 5268 fprintf(stderr, "\n"); 5269 va_end(ap); 5270 return (0); 5271 } 5272 5273 int 5274 disallow_table(struct node_host *h, const char *fmt) 5275 { 5276 for (; h != NULL; h = h->next) 5277 if (h->addr.type == PF_ADDR_TABLE) { 5278 yyerror(fmt, h->addr.v.tblname); 5279 return (1); 5280 } 5281 return (0); 5282 } 5283 5284 int 5285 disallow_urpf_failed(struct node_host *h, const char *fmt) 5286 { 5287 for (; h != NULL; h = h->next) 5288 if (h->addr.type == PF_ADDR_URPFFAILED) { 5289 yyerror(fmt); 5290 return (1); 5291 } 5292 return (0); 5293 } 5294 5295 int 5296 disallow_alias(struct node_host *h, const char *fmt) 5297 { 5298 for (; h != NULL; h = h->next) 5299 if (DYNIF_MULTIADDR(h->addr)) { 5300 yyerror(fmt, h->addr.v.tblname); 5301 return (1); 5302 } 5303 return (0); 5304 } 5305 5306 int 5307 rule_consistent(struct pfctl_rule *r, int anchor_call) 5308 { 5309 int problems = 0; 5310 5311 switch (r->action) { 5312 case PF_PASS: 5313 case PF_MATCH: 5314 case PF_DROP: 5315 case PF_SCRUB: 5316 case PF_NOSCRUB: 5317 problems = filter_consistent(r, anchor_call); 5318 break; 5319 case PF_NAT: 5320 case PF_NONAT: 5321 problems = nat_consistent(r); 5322 break; 5323 case PF_RDR: 5324 case PF_NORDR: 5325 problems = rdr_consistent(r); 5326 break; 5327 case PF_BINAT: 5328 case PF_NOBINAT: 5329 default: 5330 break; 5331 } 5332 return (problems); 5333 } 5334 5335 int 5336 filter_consistent(struct pfctl_rule *r, int anchor_call) 5337 { 5338 int problems = 0; 5339 5340 if (r->proto != IPPROTO_TCP && r->proto != IPPROTO_UDP && 5341 r->proto != IPPROTO_SCTP && 5342 (r->src.port_op || r->dst.port_op)) { 5343 yyerror("port only applies to tcp/udp/sctp"); 5344 problems++; 5345 } 5346 if (r->proto != IPPROTO_ICMP && r->proto != IPPROTO_ICMPV6 && 5347 (r->type || r->code)) { 5348 yyerror("icmp-type/code only applies to icmp"); 5349 problems++; 5350 } 5351 if (!r->af && (r->type || r->code)) { 5352 yyerror("must indicate address family with icmp-type/code"); 5353 problems++; 5354 } 5355 if (r->overload_tblname[0] && 5356 r->max_src_conn == 0 && r->max_src_conn_rate.seconds == 0) { 5357 yyerror("'overload' requires 'max-src-conn' " 5358 "or 'max-src-conn-rate'"); 5359 problems++; 5360 } 5361 if ((r->proto == IPPROTO_ICMP && r->af == AF_INET6) || 5362 (r->proto == IPPROTO_ICMPV6 && r->af == AF_INET)) { 5363 yyerror("proto %s doesn't match address family %s", 5364 r->proto == IPPROTO_ICMP ? "icmp" : "icmp6", 5365 r->af == AF_INET ? "inet" : "inet6"); 5366 problems++; 5367 } 5368 if (r->allow_opts && r->action != PF_PASS) { 5369 yyerror("allow-opts can only be specified for pass rules"); 5370 problems++; 5371 } 5372 if (r->rule_flag & PFRULE_FRAGMENT && (r->src.port_op || 5373 r->dst.port_op || r->flagset || r->type || r->code)) { 5374 yyerror("fragments can be filtered only on IP header fields"); 5375 problems++; 5376 } 5377 if (r->rule_flag & PFRULE_RETURNRST && r->proto != IPPROTO_TCP) { 5378 yyerror("return-rst can only be applied to TCP rules"); 5379 problems++; 5380 } 5381 if (r->max_src_nodes && !(r->rule_flag & PFRULE_RULESRCTRACK)) { 5382 yyerror("max-src-nodes requires 'source-track rule'"); 5383 problems++; 5384 } 5385 if (r->action != PF_PASS && r->keep_state) { 5386 yyerror("keep state is great, but only for pass rules"); 5387 problems++; 5388 } 5389 if (r->rule_flag & PFRULE_STATESLOPPY && 5390 (r->keep_state == PF_STATE_MODULATE || 5391 r->keep_state == PF_STATE_SYNPROXY)) { 5392 yyerror("sloppy state matching cannot be used with " 5393 "synproxy state or modulate state"); 5394 problems++; 5395 } 5396 /* match rules rules */ 5397 if (r->action == PF_MATCH) { 5398 if (r->divert.port) { 5399 yyerror("divert is not supported on match rules"); 5400 problems++; 5401 } 5402 if (r->rt) { 5403 yyerror("route-to, reply-to, dup-to and fastroute " 5404 "must not be used on match rules"); 5405 problems++; 5406 } 5407 } 5408 if (r->rpool.opts & PF_POOL_STICKYADDR && !r->keep_state) { 5409 yyerror("'sticky-address' requires 'keep state'"); 5410 problems++; 5411 } 5412 return (-problems); 5413 } 5414 5415 int 5416 nat_consistent(struct pfctl_rule *r) 5417 { 5418 return (0); /* yeah! */ 5419 } 5420 5421 int 5422 rdr_consistent(struct pfctl_rule *r) 5423 { 5424 int problems = 0; 5425 5426 if (r->proto != IPPROTO_TCP && r->proto != IPPROTO_UDP && 5427 r->proto != IPPROTO_SCTP) { 5428 if (r->src.port_op) { 5429 yyerror("src port only applies to tcp/udp/sctp"); 5430 problems++; 5431 } 5432 if (r->dst.port_op) { 5433 yyerror("dst port only applies to tcp/udp/sctp"); 5434 problems++; 5435 } 5436 if (r->rpool.proxy_port[0]) { 5437 yyerror("rpool port only applies to tcp/udp/sctp"); 5438 problems++; 5439 } 5440 } 5441 if (r->dst.port_op && 5442 r->dst.port_op != PF_OP_EQ && r->dst.port_op != PF_OP_RRG) { 5443 yyerror("invalid port operator for rdr destination port"); 5444 problems++; 5445 } 5446 return (-problems); 5447 } 5448 5449 int 5450 process_tabledef(char *name, struct table_opts *opts) 5451 { 5452 struct pfr_buffer ab; 5453 struct node_tinit *ti; 5454 unsigned long maxcount; 5455 size_t s = sizeof(maxcount); 5456 5457 bzero(&ab, sizeof(ab)); 5458 ab.pfrb_type = PFRB_ADDRS; 5459 SIMPLEQ_FOREACH(ti, &opts->init_nodes, entries) { 5460 if (ti->file) 5461 if (pfr_buf_load(&ab, ti->file, 0, append_addr)) { 5462 if (errno) 5463 yyerror("cannot load \"%s\": %s", 5464 ti->file, strerror(errno)); 5465 else 5466 yyerror("file \"%s\" contains bad data", 5467 ti->file); 5468 goto _error; 5469 } 5470 if (ti->host) 5471 if (append_addr_host(&ab, ti->host, 0, 0)) { 5472 yyerror("cannot create address buffer: %s", 5473 strerror(errno)); 5474 goto _error; 5475 } 5476 } 5477 if (pf->opts & PF_OPT_VERBOSE) 5478 print_tabledef(name, opts->flags, opts->init_addr, 5479 &opts->init_nodes); 5480 if (!(pf->opts & PF_OPT_NOACTION) && 5481 pfctl_define_table(name, opts->flags, opts->init_addr, 5482 pf->anchor->name, &ab, pf->anchor->ruleset.tticket)) { 5483 5484 if (sysctlbyname("net.pf.request_maxcount", &maxcount, &s, 5485 NULL, 0) == -1) 5486 maxcount = 65535; 5487 5488 if (ab.pfrb_size > maxcount) 5489 yyerror("cannot define table %s: too many elements.\n" 5490 "Consider increasing net.pf.request_maxcount.", 5491 name); 5492 else 5493 yyerror("cannot define table %s: %s", name, 5494 pfr_strerror(errno)); 5495 5496 goto _error; 5497 } 5498 pf->tdirty = 1; 5499 pfr_buf_clear(&ab); 5500 return (0); 5501 _error: 5502 pfr_buf_clear(&ab); 5503 return (-1); 5504 } 5505 5506 struct keywords { 5507 const char *k_name; 5508 int k_val; 5509 }; 5510 5511 /* macro gore, but you should've seen the prior indentation nightmare... */ 5512 5513 #define FREE_LIST(T,r) \ 5514 do { \ 5515 T *p, *node = r; \ 5516 while (node != NULL) { \ 5517 p = node; \ 5518 node = node->next; \ 5519 free(p); \ 5520 } \ 5521 } while (0) 5522 5523 #define LOOP_THROUGH(T,n,r,C) \ 5524 do { \ 5525 T *n; \ 5526 if (r == NULL) { \ 5527 r = calloc(1, sizeof(T)); \ 5528 if (r == NULL) \ 5529 err(1, "LOOP: calloc"); \ 5530 r->next = NULL; \ 5531 } \ 5532 n = r; \ 5533 while (n != NULL) { \ 5534 do { \ 5535 C; \ 5536 } while (0); \ 5537 n = n->next; \ 5538 } \ 5539 } while (0) 5540 5541 void 5542 expand_label_str(char *label, size_t len, const char *srch, const char *repl) 5543 { 5544 char *tmp; 5545 char *p, *q; 5546 5547 if ((tmp = calloc(1, len)) == NULL) 5548 err(1, "expand_label_str: calloc"); 5549 p = q = label; 5550 while ((q = strstr(p, srch)) != NULL) { 5551 *q = '\0'; 5552 if ((strlcat(tmp, p, len) >= len) || 5553 (strlcat(tmp, repl, len) >= len)) 5554 errx(1, "expand_label: label too long"); 5555 q += strlen(srch); 5556 p = q; 5557 } 5558 if (strlcat(tmp, p, len) >= len) 5559 errx(1, "expand_label: label too long"); 5560 strlcpy(label, tmp, len); /* always fits */ 5561 free(tmp); 5562 } 5563 5564 void 5565 expand_label_if(const char *name, char *label, size_t len, const char *ifname) 5566 { 5567 if (strstr(label, name) != NULL) { 5568 if (!*ifname) 5569 expand_label_str(label, len, name, "any"); 5570 else 5571 expand_label_str(label, len, name, ifname); 5572 } 5573 } 5574 5575 void 5576 expand_label_addr(const char *name, char *label, size_t len, sa_family_t af, 5577 struct pf_rule_addr *addr) 5578 { 5579 char tmp[64], tmp_not[66]; 5580 5581 if (strstr(label, name) != NULL) { 5582 switch (addr->addr.type) { 5583 case PF_ADDR_DYNIFTL: 5584 snprintf(tmp, sizeof(tmp), "(%s)", addr->addr.v.ifname); 5585 break; 5586 case PF_ADDR_TABLE: 5587 snprintf(tmp, sizeof(tmp), "<%s>", addr->addr.v.tblname); 5588 break; 5589 case PF_ADDR_NOROUTE: 5590 snprintf(tmp, sizeof(tmp), "no-route"); 5591 break; 5592 case PF_ADDR_URPFFAILED: 5593 snprintf(tmp, sizeof(tmp), "urpf-failed"); 5594 break; 5595 case PF_ADDR_ADDRMASK: 5596 if (!af || (PF_AZERO(&addr->addr.v.a.addr, af) && 5597 PF_AZERO(&addr->addr.v.a.mask, af))) 5598 snprintf(tmp, sizeof(tmp), "any"); 5599 else { 5600 char a[48]; 5601 int bits; 5602 5603 if (inet_ntop(af, &addr->addr.v.a.addr, a, 5604 sizeof(a)) == NULL) 5605 snprintf(tmp, sizeof(tmp), "?"); 5606 else { 5607 bits = unmask(&addr->addr.v.a.mask, af); 5608 if ((af == AF_INET && bits < 32) || 5609 (af == AF_INET6 && bits < 128)) 5610 snprintf(tmp, sizeof(tmp), 5611 "%s/%d", a, bits); 5612 else 5613 snprintf(tmp, sizeof(tmp), 5614 "%s", a); 5615 } 5616 } 5617 break; 5618 default: 5619 snprintf(tmp, sizeof(tmp), "?"); 5620 break; 5621 } 5622 5623 if (addr->neg) { 5624 snprintf(tmp_not, sizeof(tmp_not), "! %s", tmp); 5625 expand_label_str(label, len, name, tmp_not); 5626 } else 5627 expand_label_str(label, len, name, tmp); 5628 } 5629 } 5630 5631 void 5632 expand_label_port(const char *name, char *label, size_t len, 5633 struct pf_rule_addr *addr) 5634 { 5635 char a1[6], a2[6], op[13] = ""; 5636 5637 if (strstr(label, name) != NULL) { 5638 snprintf(a1, sizeof(a1), "%u", ntohs(addr->port[0])); 5639 snprintf(a2, sizeof(a2), "%u", ntohs(addr->port[1])); 5640 if (!addr->port_op) 5641 ; 5642 else if (addr->port_op == PF_OP_IRG) 5643 snprintf(op, sizeof(op), "%s><%s", a1, a2); 5644 else if (addr->port_op == PF_OP_XRG) 5645 snprintf(op, sizeof(op), "%s<>%s", a1, a2); 5646 else if (addr->port_op == PF_OP_EQ) 5647 snprintf(op, sizeof(op), "%s", a1); 5648 else if (addr->port_op == PF_OP_NE) 5649 snprintf(op, sizeof(op), "!=%s", a1); 5650 else if (addr->port_op == PF_OP_LT) 5651 snprintf(op, sizeof(op), "<%s", a1); 5652 else if (addr->port_op == PF_OP_LE) 5653 snprintf(op, sizeof(op), "<=%s", a1); 5654 else if (addr->port_op == PF_OP_GT) 5655 snprintf(op, sizeof(op), ">%s", a1); 5656 else if (addr->port_op == PF_OP_GE) 5657 snprintf(op, sizeof(op), ">=%s", a1); 5658 expand_label_str(label, len, name, op); 5659 } 5660 } 5661 5662 void 5663 expand_label_proto(const char *name, char *label, size_t len, u_int8_t proto) 5664 { 5665 const char *protoname; 5666 char n[4]; 5667 5668 if (strstr(label, name) != NULL) { 5669 protoname = pfctl_proto2name(proto); 5670 if (protoname != NULL) 5671 expand_label_str(label, len, name, protoname); 5672 else { 5673 snprintf(n, sizeof(n), "%u", proto); 5674 expand_label_str(label, len, name, n); 5675 } 5676 } 5677 } 5678 5679 void 5680 expand_label_nr(const char *name, char *label, size_t len, 5681 struct pfctl_rule *r) 5682 { 5683 char n[11]; 5684 5685 if (strstr(label, name) != NULL) { 5686 snprintf(n, sizeof(n), "%u", r->nr); 5687 expand_label_str(label, len, name, n); 5688 } 5689 } 5690 5691 void 5692 expand_label(char *label, size_t len, struct pfctl_rule *r) 5693 { 5694 expand_label_if("$if", label, len, r->ifname); 5695 expand_label_addr("$srcaddr", label, len, r->af, &r->src); 5696 expand_label_addr("$dstaddr", label, len, r->af, &r->dst); 5697 expand_label_port("$srcport", label, len, &r->src); 5698 expand_label_port("$dstport", label, len, &r->dst); 5699 expand_label_proto("$proto", label, len, r->proto); 5700 expand_label_nr("$nr", label, len, r); 5701 } 5702 5703 int 5704 expand_altq(struct pf_altq *a, struct node_if *interfaces, 5705 struct node_queue *nqueues, struct node_queue_bw bwspec, 5706 struct node_queue_opt *opts) 5707 { 5708 struct pf_altq pa, pb; 5709 char qname[PF_QNAME_SIZE]; 5710 struct node_queue *n; 5711 struct node_queue_bw bw; 5712 int errs = 0; 5713 5714 if ((pf->loadopt & PFCTL_FLAG_ALTQ) == 0) { 5715 FREE_LIST(struct node_if, interfaces); 5716 if (nqueues) 5717 FREE_LIST(struct node_queue, nqueues); 5718 return (0); 5719 } 5720 5721 LOOP_THROUGH(struct node_if, interface, interfaces, 5722 memcpy(&pa, a, sizeof(struct pf_altq)); 5723 if (strlcpy(pa.ifname, interface->ifname, 5724 sizeof(pa.ifname)) >= sizeof(pa.ifname)) 5725 errx(1, "expand_altq: strlcpy"); 5726 5727 if (interface->not) { 5728 yyerror("altq on ! <interface> is not supported"); 5729 errs++; 5730 } else { 5731 if (eval_pfaltq(pf, &pa, &bwspec, opts)) 5732 errs++; 5733 else 5734 if (pfctl_add_altq(pf, &pa)) 5735 errs++; 5736 5737 if (pf->opts & PF_OPT_VERBOSE) { 5738 print_altq(&pf->paltq->altq, 0, 5739 &bwspec, opts); 5740 if (nqueues && nqueues->tail) { 5741 printf("queue { "); 5742 LOOP_THROUGH(struct node_queue, queue, 5743 nqueues, 5744 printf("%s ", 5745 queue->queue); 5746 ); 5747 printf("}"); 5748 } 5749 printf("\n"); 5750 } 5751 5752 if (pa.scheduler == ALTQT_CBQ || 5753 pa.scheduler == ALTQT_HFSC || 5754 pa.scheduler == ALTQT_FAIRQ) { 5755 /* now create a root queue */ 5756 memset(&pb, 0, sizeof(struct pf_altq)); 5757 if (strlcpy(qname, "root_", sizeof(qname)) >= 5758 sizeof(qname)) 5759 errx(1, "expand_altq: strlcpy"); 5760 if (strlcat(qname, interface->ifname, 5761 sizeof(qname)) >= sizeof(qname)) 5762 errx(1, "expand_altq: strlcat"); 5763 if (strlcpy(pb.qname, qname, 5764 sizeof(pb.qname)) >= sizeof(pb.qname)) 5765 errx(1, "expand_altq: strlcpy"); 5766 if (strlcpy(pb.ifname, interface->ifname, 5767 sizeof(pb.ifname)) >= sizeof(pb.ifname)) 5768 errx(1, "expand_altq: strlcpy"); 5769 pb.qlimit = pa.qlimit; 5770 pb.scheduler = pa.scheduler; 5771 bw.bw_absolute = pa.ifbandwidth; 5772 bw.bw_percent = 0; 5773 if (eval_pfqueue(pf, &pb, &bw, opts)) 5774 errs++; 5775 else 5776 if (pfctl_add_altq(pf, &pb)) 5777 errs++; 5778 } 5779 5780 LOOP_THROUGH(struct node_queue, queue, nqueues, 5781 n = calloc(1, sizeof(struct node_queue)); 5782 if (n == NULL) 5783 err(1, "expand_altq: calloc"); 5784 if (pa.scheduler == ALTQT_CBQ || 5785 pa.scheduler == ALTQT_HFSC || 5786 pa.scheduler == ALTQT_FAIRQ) 5787 if (strlcpy(n->parent, qname, 5788 sizeof(n->parent)) >= 5789 sizeof(n->parent)) 5790 errx(1, "expand_altq: strlcpy"); 5791 if (strlcpy(n->queue, queue->queue, 5792 sizeof(n->queue)) >= sizeof(n->queue)) 5793 errx(1, "expand_altq: strlcpy"); 5794 if (strlcpy(n->ifname, interface->ifname, 5795 sizeof(n->ifname)) >= sizeof(n->ifname)) 5796 errx(1, "expand_altq: strlcpy"); 5797 n->scheduler = pa.scheduler; 5798 n->next = NULL; 5799 n->tail = n; 5800 if (queues == NULL) 5801 queues = n; 5802 else { 5803 queues->tail->next = n; 5804 queues->tail = n; 5805 } 5806 ); 5807 } 5808 ); 5809 FREE_LIST(struct node_if, interfaces); 5810 if (nqueues) 5811 FREE_LIST(struct node_queue, nqueues); 5812 5813 return (errs); 5814 } 5815 5816 int 5817 expand_queue(struct pf_altq *a, struct node_if *interfaces, 5818 struct node_queue *nqueues, struct node_queue_bw bwspec, 5819 struct node_queue_opt *opts) 5820 { 5821 struct node_queue *n, *nq; 5822 struct pf_altq pa; 5823 u_int8_t found = 0; 5824 u_int8_t errs = 0; 5825 5826 if ((pf->loadopt & PFCTL_FLAG_ALTQ) == 0) { 5827 FREE_LIST(struct node_queue, nqueues); 5828 return (0); 5829 } 5830 5831 if (queues == NULL) { 5832 yyerror("queue %s has no parent", a->qname); 5833 FREE_LIST(struct node_queue, nqueues); 5834 return (1); 5835 } 5836 5837 LOOP_THROUGH(struct node_if, interface, interfaces, 5838 LOOP_THROUGH(struct node_queue, tqueue, queues, 5839 if (!strncmp(a->qname, tqueue->queue, PF_QNAME_SIZE) && 5840 (interface->ifname[0] == 0 || 5841 (!interface->not && !strncmp(interface->ifname, 5842 tqueue->ifname, IFNAMSIZ)) || 5843 (interface->not && strncmp(interface->ifname, 5844 tqueue->ifname, IFNAMSIZ)))) { 5845 /* found ourself in queues */ 5846 found++; 5847 5848 memcpy(&pa, a, sizeof(struct pf_altq)); 5849 5850 if (pa.scheduler != ALTQT_NONE && 5851 pa.scheduler != tqueue->scheduler) { 5852 yyerror("exactly one scheduler type " 5853 "per interface allowed"); 5854 return (1); 5855 } 5856 pa.scheduler = tqueue->scheduler; 5857 5858 /* scheduler dependent error checking */ 5859 switch (pa.scheduler) { 5860 case ALTQT_PRIQ: 5861 if (nqueues != NULL) { 5862 yyerror("priq queues cannot " 5863 "have child queues"); 5864 return (1); 5865 } 5866 if (bwspec.bw_absolute > 0 || 5867 bwspec.bw_percent < 100) { 5868 yyerror("priq doesn't take " 5869 "bandwidth"); 5870 return (1); 5871 } 5872 break; 5873 default: 5874 break; 5875 } 5876 5877 if (strlcpy(pa.ifname, tqueue->ifname, 5878 sizeof(pa.ifname)) >= sizeof(pa.ifname)) 5879 errx(1, "expand_queue: strlcpy"); 5880 if (strlcpy(pa.parent, tqueue->parent, 5881 sizeof(pa.parent)) >= sizeof(pa.parent)) 5882 errx(1, "expand_queue: strlcpy"); 5883 5884 if (eval_pfqueue(pf, &pa, &bwspec, opts)) 5885 errs++; 5886 else 5887 if (pfctl_add_altq(pf, &pa)) 5888 errs++; 5889 5890 for (nq = nqueues; nq != NULL; nq = nq->next) { 5891 if (!strcmp(a->qname, nq->queue)) { 5892 yyerror("queue cannot have " 5893 "itself as child"); 5894 errs++; 5895 continue; 5896 } 5897 n = calloc(1, 5898 sizeof(struct node_queue)); 5899 if (n == NULL) 5900 err(1, "expand_queue: calloc"); 5901 if (strlcpy(n->parent, a->qname, 5902 sizeof(n->parent)) >= 5903 sizeof(n->parent)) 5904 errx(1, "expand_queue strlcpy"); 5905 if (strlcpy(n->queue, nq->queue, 5906 sizeof(n->queue)) >= 5907 sizeof(n->queue)) 5908 errx(1, "expand_queue strlcpy"); 5909 if (strlcpy(n->ifname, tqueue->ifname, 5910 sizeof(n->ifname)) >= 5911 sizeof(n->ifname)) 5912 errx(1, "expand_queue strlcpy"); 5913 n->scheduler = tqueue->scheduler; 5914 n->next = NULL; 5915 n->tail = n; 5916 if (queues == NULL) 5917 queues = n; 5918 else { 5919 queues->tail->next = n; 5920 queues->tail = n; 5921 } 5922 } 5923 if ((pf->opts & PF_OPT_VERBOSE) && ( 5924 (found == 1 && interface->ifname[0] == 0) || 5925 (found > 0 && interface->ifname[0] != 0))) { 5926 print_queue(&pf->paltq->altq, 0, 5927 &bwspec, interface->ifname[0] != 0, 5928 opts); 5929 if (nqueues && nqueues->tail) { 5930 printf("{ "); 5931 LOOP_THROUGH(struct node_queue, 5932 queue, nqueues, 5933 printf("%s ", 5934 queue->queue); 5935 ); 5936 printf("}"); 5937 } 5938 printf("\n"); 5939 } 5940 } 5941 ); 5942 ); 5943 5944 FREE_LIST(struct node_queue, nqueues); 5945 FREE_LIST(struct node_if, interfaces); 5946 5947 if (!found) { 5948 yyerror("queue %s has no parent", a->qname); 5949 errs++; 5950 } 5951 5952 if (errs) 5953 return (1); 5954 else 5955 return (0); 5956 } 5957 5958 static int 5959 pf_af_to_proto(sa_family_t af) 5960 { 5961 if (af == AF_INET) 5962 return (ETHERTYPE_IP); 5963 if (af == AF_INET6) 5964 return (ETHERTYPE_IPV6); 5965 5966 return (0); 5967 } 5968 5969 void 5970 expand_eth_rule(struct pfctl_eth_rule *r, 5971 struct node_if *interfaces, struct node_etherproto *protos, 5972 struct node_mac *srcs, struct node_mac *dsts, 5973 struct node_host *ipsrcs, struct node_host *ipdsts, 5974 const char *bridge_to, const char *anchor_call) 5975 { 5976 char tagname[PF_TAG_NAME_SIZE]; 5977 char match_tagname[PF_TAG_NAME_SIZE]; 5978 char qname[PF_QNAME_SIZE]; 5979 5980 if (strlcpy(tagname, r->tagname, sizeof(tagname)) >= sizeof(tagname)) 5981 errx(1, "expand_eth_rule: tagname"); 5982 if (strlcpy(match_tagname, r->match_tagname, sizeof(match_tagname)) >= 5983 sizeof(match_tagname)) 5984 errx(1, "expand_eth_rule: match_tagname"); 5985 if (strlcpy(qname, r->qname, sizeof(qname)) >= sizeof(qname)) 5986 errx(1, "expand_eth_rule: qname"); 5987 5988 LOOP_THROUGH(struct node_if, interface, interfaces, 5989 LOOP_THROUGH(struct node_etherproto, proto, protos, 5990 LOOP_THROUGH(struct node_mac, src, srcs, 5991 LOOP_THROUGH(struct node_mac, dst, dsts, 5992 LOOP_THROUGH(struct node_host, ipsrc, ipsrcs, 5993 LOOP_THROUGH(struct node_host, ipdst, ipdsts, 5994 strlcpy(r->ifname, interface->ifname, 5995 sizeof(r->ifname)); 5996 r->ifnot = interface->not; 5997 r->proto = proto->proto; 5998 if (!r->proto && ipsrc->af) 5999 r->proto = pf_af_to_proto(ipsrc->af); 6000 else if (!r->proto && ipdst->af) 6001 r->proto = pf_af_to_proto(ipdst->af); 6002 bcopy(src->mac, r->src.addr, ETHER_ADDR_LEN); 6003 bcopy(src->mask, r->src.mask, ETHER_ADDR_LEN); 6004 r->src.neg = src->neg; 6005 r->src.isset = src->isset; 6006 r->ipsrc.addr = ipsrc->addr; 6007 r->ipsrc.neg = ipsrc->not; 6008 r->ipdst.addr = ipdst->addr; 6009 r->ipdst.neg = ipdst->not; 6010 bcopy(dst->mac, r->dst.addr, ETHER_ADDR_LEN); 6011 bcopy(dst->mask, r->dst.mask, ETHER_ADDR_LEN); 6012 r->dst.neg = dst->neg; 6013 r->dst.isset = dst->isset; 6014 r->nr = pf->eastack[pf->asd]->match++; 6015 6016 if (strlcpy(r->tagname, tagname, sizeof(r->tagname)) >= 6017 sizeof(r->tagname)) 6018 errx(1, "expand_eth_rule: r->tagname"); 6019 if (strlcpy(r->match_tagname, match_tagname, 6020 sizeof(r->match_tagname)) >= sizeof(r->match_tagname)) 6021 errx(1, "expand_eth_rule: r->match_tagname"); 6022 if (strlcpy(r->qname, qname, sizeof(r->qname)) >= sizeof(r->qname)) 6023 errx(1, "expand_eth_rule: r->qname"); 6024 6025 if (bridge_to) 6026 strlcpy(r->bridge_to, bridge_to, sizeof(r->bridge_to)); 6027 6028 pfctl_append_eth_rule(pf, r, anchor_call); 6029 )))))); 6030 6031 FREE_LIST(struct node_if, interfaces); 6032 FREE_LIST(struct node_etherproto, protos); 6033 FREE_LIST(struct node_mac, srcs); 6034 FREE_LIST(struct node_mac, dsts); 6035 FREE_LIST(struct node_host, ipsrcs); 6036 FREE_LIST(struct node_host, ipdsts); 6037 } 6038 6039 void 6040 expand_rule(struct pfctl_rule *r, 6041 struct node_if *interfaces, struct node_host *rpool_hosts, 6042 struct node_proto *protos, struct node_os *src_oses, 6043 struct node_host *src_hosts, struct node_port *src_ports, 6044 struct node_host *dst_hosts, struct node_port *dst_ports, 6045 struct node_uid *uids, struct node_gid *gids, struct node_if *rcv, 6046 struct node_icmp *icmp_types, const char *anchor_call) 6047 { 6048 sa_family_t af = r->af; 6049 int added = 0, error = 0; 6050 char ifname[IF_NAMESIZE]; 6051 char label[PF_RULE_MAX_LABEL_COUNT][PF_RULE_LABEL_SIZE]; 6052 char tagname[PF_TAG_NAME_SIZE]; 6053 char match_tagname[PF_TAG_NAME_SIZE]; 6054 struct pf_pooladdr *pa; 6055 struct node_host *h, *osrch, *odsth; 6056 u_int8_t flags, flagset, keep_state; 6057 6058 memcpy(label, r->label, sizeof(r->label)); 6059 assert(sizeof(r->label) == sizeof(label)); 6060 if (strlcpy(tagname, r->tagname, sizeof(tagname)) >= sizeof(tagname)) 6061 errx(1, "expand_rule: strlcpy"); 6062 if (strlcpy(match_tagname, r->match_tagname, sizeof(match_tagname)) >= 6063 sizeof(match_tagname)) 6064 errx(1, "expand_rule: strlcpy"); 6065 flags = r->flags; 6066 flagset = r->flagset; 6067 keep_state = r->keep_state; 6068 6069 LOOP_THROUGH(struct node_if, interface, interfaces, 6070 LOOP_THROUGH(struct node_proto, proto, protos, 6071 LOOP_THROUGH(struct node_icmp, icmp_type, icmp_types, 6072 LOOP_THROUGH(struct node_host, src_host, src_hosts, 6073 LOOP_THROUGH(struct node_port, src_port, src_ports, 6074 LOOP_THROUGH(struct node_os, src_os, src_oses, 6075 LOOP_THROUGH(struct node_host, dst_host, dst_hosts, 6076 LOOP_THROUGH(struct node_port, dst_port, dst_ports, 6077 LOOP_THROUGH(struct node_uid, uid, uids, 6078 LOOP_THROUGH(struct node_gid, gid, gids, 6079 6080 r->af = af; 6081 /* for link-local IPv6 address, interface must match up */ 6082 if ((r->af && src_host->af && r->af != src_host->af) || 6083 (r->af && dst_host->af && r->af != dst_host->af) || 6084 (src_host->af && dst_host->af && 6085 src_host->af != dst_host->af) || 6086 (src_host->ifindex && dst_host->ifindex && 6087 src_host->ifindex != dst_host->ifindex) || 6088 (src_host->ifindex && *interface->ifname && 6089 src_host->ifindex != if_nametoindex(interface->ifname)) || 6090 (dst_host->ifindex && *interface->ifname && 6091 dst_host->ifindex != if_nametoindex(interface->ifname))) 6092 continue; 6093 if (!r->af && src_host->af) 6094 r->af = src_host->af; 6095 else if (!r->af && dst_host->af) 6096 r->af = dst_host->af; 6097 6098 if (*interface->ifname) 6099 strlcpy(r->ifname, interface->ifname, 6100 sizeof(r->ifname)); 6101 else if (if_indextoname(src_host->ifindex, ifname)) 6102 strlcpy(r->ifname, ifname, sizeof(r->ifname)); 6103 else if (if_indextoname(dst_host->ifindex, ifname)) 6104 strlcpy(r->ifname, ifname, sizeof(r->ifname)); 6105 else 6106 memset(r->ifname, '\0', sizeof(r->ifname)); 6107 6108 memcpy(r->label, label, sizeof(r->label)); 6109 if (strlcpy(r->tagname, tagname, sizeof(r->tagname)) >= 6110 sizeof(r->tagname)) 6111 errx(1, "expand_rule: strlcpy"); 6112 if (strlcpy(r->match_tagname, match_tagname, 6113 sizeof(r->match_tagname)) >= sizeof(r->match_tagname)) 6114 errx(1, "expand_rule: strlcpy"); 6115 6116 osrch = odsth = NULL; 6117 if (src_host->addr.type == PF_ADDR_DYNIFTL) { 6118 osrch = src_host; 6119 if ((src_host = gen_dynnode(src_host, r->af)) == NULL) 6120 err(1, "expand_rule: calloc"); 6121 } 6122 if (dst_host->addr.type == PF_ADDR_DYNIFTL) { 6123 odsth = dst_host; 6124 if ((dst_host = gen_dynnode(dst_host, r->af)) == NULL) 6125 err(1, "expand_rule: calloc"); 6126 } 6127 6128 error += check_netmask(src_host, r->af); 6129 error += check_netmask(dst_host, r->af); 6130 6131 r->ifnot = interface->not; 6132 r->proto = proto->proto; 6133 r->src.addr = src_host->addr; 6134 r->src.neg = src_host->not; 6135 r->src.port[0] = src_port->port[0]; 6136 r->src.port[1] = src_port->port[1]; 6137 r->src.port_op = src_port->op; 6138 r->dst.addr = dst_host->addr; 6139 r->dst.neg = dst_host->not; 6140 r->dst.port[0] = dst_port->port[0]; 6141 r->dst.port[1] = dst_port->port[1]; 6142 r->dst.port_op = dst_port->op; 6143 r->uid.op = uid->op; 6144 r->uid.uid[0] = uid->uid[0]; 6145 r->uid.uid[1] = uid->uid[1]; 6146 r->gid.op = gid->op; 6147 r->gid.gid[0] = gid->gid[0]; 6148 r->gid.gid[1] = gid->gid[1]; 6149 if (rcv) { 6150 strlcpy(r->rcv_ifname, rcv->ifname, 6151 sizeof(r->rcv_ifname)); 6152 } 6153 r->type = icmp_type->type; 6154 r->code = icmp_type->code; 6155 6156 if ((keep_state == PF_STATE_MODULATE || 6157 keep_state == PF_STATE_SYNPROXY) && 6158 r->proto && r->proto != IPPROTO_TCP) 6159 r->keep_state = PF_STATE_NORMAL; 6160 else 6161 r->keep_state = keep_state; 6162 6163 if (r->proto && r->proto != IPPROTO_TCP) { 6164 r->flags = 0; 6165 r->flagset = 0; 6166 } else { 6167 r->flags = flags; 6168 r->flagset = flagset; 6169 } 6170 if (icmp_type->proto && r->proto != icmp_type->proto) { 6171 yyerror("icmp-type mismatch"); 6172 error++; 6173 } 6174 6175 if (src_os && src_os->os) { 6176 r->os_fingerprint = pfctl_get_fingerprint(src_os->os); 6177 if ((pf->opts & PF_OPT_VERBOSE2) && 6178 r->os_fingerprint == PF_OSFP_NOMATCH) 6179 fprintf(stderr, 6180 "warning: unknown '%s' OS fingerprint\n", 6181 src_os->os); 6182 } else { 6183 r->os_fingerprint = PF_OSFP_ANY; 6184 } 6185 6186 TAILQ_INIT(&r->rpool.list); 6187 for (h = rpool_hosts; h != NULL; h = h->next) { 6188 pa = calloc(1, sizeof(struct pf_pooladdr)); 6189 if (pa == NULL) 6190 err(1, "expand_rule: calloc"); 6191 pa->addr = h->addr; 6192 if (h->ifname != NULL) { 6193 if (strlcpy(pa->ifname, h->ifname, 6194 sizeof(pa->ifname)) >= 6195 sizeof(pa->ifname)) 6196 errx(1, "expand_rule: strlcpy"); 6197 } else 6198 pa->ifname[0] = 0; 6199 TAILQ_INSERT_TAIL(&r->rpool.list, pa, entries); 6200 } 6201 6202 if (rule_consistent(r, anchor_call[0]) < 0 || error) 6203 yyerror("skipping rule due to errors"); 6204 else { 6205 r->nr = pf->astack[pf->asd]->match++; 6206 pfctl_append_rule(pf, r, anchor_call); 6207 added++; 6208 } 6209 6210 if (osrch && src_host->addr.type == PF_ADDR_DYNIFTL) { 6211 free(src_host); 6212 src_host = osrch; 6213 } 6214 if (odsth && dst_host->addr.type == PF_ADDR_DYNIFTL) { 6215 free(dst_host); 6216 dst_host = odsth; 6217 } 6218 6219 )))))))))); 6220 6221 FREE_LIST(struct node_if, interfaces); 6222 FREE_LIST(struct node_proto, protos); 6223 FREE_LIST(struct node_host, src_hosts); 6224 FREE_LIST(struct node_port, src_ports); 6225 FREE_LIST(struct node_os, src_oses); 6226 FREE_LIST(struct node_host, dst_hosts); 6227 FREE_LIST(struct node_port, dst_ports); 6228 FREE_LIST(struct node_uid, uids); 6229 FREE_LIST(struct node_gid, gids); 6230 FREE_LIST(struct node_icmp, icmp_types); 6231 FREE_LIST(struct node_host, rpool_hosts); 6232 6233 if (!added) 6234 yyerror("rule expands to no valid combination"); 6235 } 6236 6237 int 6238 expand_skip_interface(struct node_if *interfaces) 6239 { 6240 int errs = 0; 6241 6242 if (!interfaces || (!interfaces->next && !interfaces->not && 6243 !strcmp(interfaces->ifname, "none"))) { 6244 if (pf->opts & PF_OPT_VERBOSE) 6245 printf("set skip on none\n"); 6246 errs = pfctl_set_interface_flags(pf, "", PFI_IFLAG_SKIP, 0); 6247 return (errs); 6248 } 6249 6250 if (pf->opts & PF_OPT_VERBOSE) 6251 printf("set skip on {"); 6252 LOOP_THROUGH(struct node_if, interface, interfaces, 6253 if (pf->opts & PF_OPT_VERBOSE) 6254 printf(" %s", interface->ifname); 6255 if (interface->not) { 6256 yyerror("skip on ! <interface> is not supported"); 6257 errs++; 6258 } else 6259 errs += pfctl_set_interface_flags(pf, 6260 interface->ifname, PFI_IFLAG_SKIP, 1); 6261 ); 6262 if (pf->opts & PF_OPT_VERBOSE) 6263 printf(" }\n"); 6264 6265 FREE_LIST(struct node_if, interfaces); 6266 6267 if (errs) 6268 return (1); 6269 else 6270 return (0); 6271 } 6272 6273 #undef FREE_LIST 6274 #undef LOOP_THROUGH 6275 6276 int 6277 check_rulestate(int desired_state) 6278 { 6279 if (require_order && (rulestate > desired_state)) { 6280 yyerror("Rules must be in order: options, ethernet, " 6281 "normalization, queueing, translation, filtering"); 6282 return (1); 6283 } 6284 rulestate = desired_state; 6285 return (0); 6286 } 6287 6288 int 6289 kw_cmp(const void *k, const void *e) 6290 { 6291 return (strcmp(k, ((const struct keywords *)e)->k_name)); 6292 } 6293 6294 int 6295 lookup(char *s) 6296 { 6297 /* this has to be sorted always */ 6298 static const struct keywords keywords[] = { 6299 { "all", ALL}, 6300 { "allow-opts", ALLOWOPTS}, 6301 { "altq", ALTQ}, 6302 { "anchor", ANCHOR}, 6303 { "antispoof", ANTISPOOF}, 6304 { "any", ANY}, 6305 { "bandwidth", BANDWIDTH}, 6306 { "binat", BINAT}, 6307 { "binat-anchor", BINATANCHOR}, 6308 { "bitmask", BITMASK}, 6309 { "block", BLOCK}, 6310 { "block-policy", BLOCKPOLICY}, 6311 { "bridge-to", BRIDGE_TO}, 6312 { "buckets", BUCKETS}, 6313 { "cbq", CBQ}, 6314 { "code", CODE}, 6315 { "codelq", CODEL}, 6316 { "debug", DEBUG}, 6317 { "divert-reply", DIVERTREPLY}, 6318 { "divert-to", DIVERTTO}, 6319 { "dnpipe", DNPIPE}, 6320 { "dnqueue", DNQUEUE}, 6321 { "drop", DROP}, 6322 { "dup-to", DUPTO}, 6323 { "endpoint-independent", ENDPI}, 6324 { "ether", ETHER}, 6325 { "fail-policy", FAILPOLICY}, 6326 { "fairq", FAIRQ}, 6327 { "fastroute", FASTROUTE}, 6328 { "file", FILENAME}, 6329 { "fingerprints", FINGERPRINTS}, 6330 { "flags", FLAGS}, 6331 { "floating", FLOATING}, 6332 { "flush", FLUSH}, 6333 { "for", FOR}, 6334 { "fragment", FRAGMENT}, 6335 { "from", FROM}, 6336 { "global", GLOBAL}, 6337 { "group", GROUP}, 6338 { "hfsc", HFSC}, 6339 { "hogs", HOGS}, 6340 { "hostid", HOSTID}, 6341 { "icmp-type", ICMPTYPE}, 6342 { "icmp6-type", ICMP6TYPE}, 6343 { "if-bound", IFBOUND}, 6344 { "in", IN}, 6345 { "include", INCLUDE}, 6346 { "inet", INET}, 6347 { "inet6", INET6}, 6348 { "interval", INTERVAL}, 6349 { "keep", KEEP}, 6350 { "keepcounters", KEEPCOUNTERS}, 6351 { "l3", L3}, 6352 { "label", LABEL}, 6353 { "limit", LIMIT}, 6354 { "linkshare", LINKSHARE}, 6355 { "load", LOAD}, 6356 { "log", LOG}, 6357 { "loginterface", LOGINTERFACE}, 6358 { "map-e-portset", MAPEPORTSET}, 6359 { "match", MATCH}, 6360 { "max", MAXIMUM}, 6361 { "max-mss", MAXMSS}, 6362 { "max-src-conn", MAXSRCCONN}, 6363 { "max-src-conn-rate", MAXSRCCONNRATE}, 6364 { "max-src-nodes", MAXSRCNODES}, 6365 { "max-src-states", MAXSRCSTATES}, 6366 { "min-ttl", MINTTL}, 6367 { "modulate", MODULATE}, 6368 { "nat", NAT}, 6369 { "nat-anchor", NATANCHOR}, 6370 { "no", NO}, 6371 { "no-df", NODF}, 6372 { "no-route", NOROUTE}, 6373 { "no-sync", NOSYNC}, 6374 { "on", ON}, 6375 { "optimization", OPTIMIZATION}, 6376 { "os", OS}, 6377 { "out", OUT}, 6378 { "overload", OVERLOAD}, 6379 { "pass", PASS}, 6380 { "pflow", PFLOW}, 6381 { "port", PORT}, 6382 { "prio", PRIO}, 6383 { "priority", PRIORITY}, 6384 { "priq", PRIQ}, 6385 { "probability", PROBABILITY}, 6386 { "proto", PROTO}, 6387 { "qlimit", QLIMIT}, 6388 { "queue", QUEUE}, 6389 { "quick", QUICK}, 6390 { "random", RANDOM}, 6391 { "random-id", RANDOMID}, 6392 { "rdr", RDR}, 6393 { "rdr-anchor", RDRANCHOR}, 6394 { "realtime", REALTIME}, 6395 { "reassemble", REASSEMBLE}, 6396 { "received-on", RECEIVEDON}, 6397 { "reply-to", REPLYTO}, 6398 { "require-order", REQUIREORDER}, 6399 { "return", RETURN}, 6400 { "return-icmp", RETURNICMP}, 6401 { "return-icmp6", RETURNICMP6}, 6402 { "return-rst", RETURNRST}, 6403 { "ridentifier", RIDENTIFIER}, 6404 { "round-robin", ROUNDROBIN}, 6405 { "route", ROUTE}, 6406 { "route-to", ROUTETO}, 6407 { "rtable", RTABLE}, 6408 { "rule", RULE}, 6409 { "ruleset-optimization", RULESET_OPTIMIZATION}, 6410 { "scrub", SCRUB}, 6411 { "set", SET}, 6412 { "set-tos", SETTOS}, 6413 { "skip", SKIP}, 6414 { "sloppy", SLOPPY}, 6415 { "source-hash", SOURCEHASH}, 6416 { "source-track", SOURCETRACK}, 6417 { "state", STATE}, 6418 { "state-defaults", STATEDEFAULTS}, 6419 { "state-policy", STATEPOLICY}, 6420 { "static-port", STATICPORT}, 6421 { "sticky-address", STICKYADDRESS}, 6422 { "syncookies", SYNCOOKIES}, 6423 { "synproxy", SYNPROXY}, 6424 { "table", TABLE}, 6425 { "tag", TAG}, 6426 { "tagged", TAGGED}, 6427 { "target", TARGET}, 6428 { "tbrsize", TBRSIZE}, 6429 { "timeout", TIMEOUT}, 6430 { "to", TO}, 6431 { "tos", TOS}, 6432 { "ttl", TTL}, 6433 { "upperlimit", UPPERLIMIT}, 6434 { "urpf-failed", URPFFAILED}, 6435 { "user", USER}, 6436 }; 6437 const struct keywords *p; 6438 6439 p = bsearch(s, keywords, sizeof(keywords)/sizeof(keywords[0]), 6440 sizeof(keywords[0]), kw_cmp); 6441 6442 if (p) { 6443 if (debug > 1) 6444 fprintf(stderr, "%s: %d\n", s, p->k_val); 6445 return (p->k_val); 6446 } else { 6447 if (debug > 1) 6448 fprintf(stderr, "string: %s\n", s); 6449 return (STRING); 6450 } 6451 } 6452 6453 #define MAXPUSHBACK 128 6454 6455 static char *parsebuf; 6456 static int parseindex; 6457 static char pushback_buffer[MAXPUSHBACK]; 6458 static int pushback_index = 0; 6459 6460 int 6461 lgetc(int quotec) 6462 { 6463 int c, next; 6464 6465 if (parsebuf) { 6466 /* Read character from the parsebuffer instead of input. */ 6467 if (parseindex >= 0) { 6468 c = parsebuf[parseindex++]; 6469 if (c != '\0') 6470 return (c); 6471 parsebuf = NULL; 6472 } else 6473 parseindex++; 6474 } 6475 6476 if (pushback_index) 6477 return (pushback_buffer[--pushback_index]); 6478 6479 if (quotec) { 6480 if ((c = getc(file->stream)) == EOF) { 6481 yyerror("reached end of file while parsing quoted string"); 6482 if (popfile() == EOF) 6483 return (EOF); 6484 return (quotec); 6485 } 6486 return (c); 6487 } 6488 6489 while ((c = getc(file->stream)) == '\\') { 6490 next = getc(file->stream); 6491 if (next != '\n') { 6492 c = next; 6493 break; 6494 } 6495 yylval.lineno = file->lineno; 6496 file->lineno++; 6497 } 6498 6499 while (c == EOF) { 6500 if (popfile() == EOF) 6501 return (EOF); 6502 c = getc(file->stream); 6503 } 6504 return (c); 6505 } 6506 6507 int 6508 lungetc(int c) 6509 { 6510 if (c == EOF) 6511 return (EOF); 6512 if (parsebuf) { 6513 parseindex--; 6514 if (parseindex >= 0) 6515 return (c); 6516 } 6517 if (pushback_index < MAXPUSHBACK-1) 6518 return (pushback_buffer[pushback_index++] = c); 6519 else 6520 return (EOF); 6521 } 6522 6523 int 6524 findeol(void) 6525 { 6526 int c; 6527 6528 parsebuf = NULL; 6529 6530 /* skip to either EOF or the first real EOL */ 6531 while (1) { 6532 if (pushback_index) 6533 c = pushback_buffer[--pushback_index]; 6534 else 6535 c = lgetc(0); 6536 if (c == '\n') { 6537 file->lineno++; 6538 break; 6539 } 6540 if (c == EOF) 6541 break; 6542 } 6543 return (ERROR); 6544 } 6545 6546 int 6547 yylex(void) 6548 { 6549 char buf[8096]; 6550 char *p, *val; 6551 int quotec, next, c; 6552 int token; 6553 6554 top: 6555 p = buf; 6556 while ((c = lgetc(0)) == ' ' || c == '\t') 6557 ; /* nothing */ 6558 6559 yylval.lineno = file->lineno; 6560 if (c == '#') 6561 while ((c = lgetc(0)) != '\n' && c != EOF) 6562 ; /* nothing */ 6563 if (c == '$' && parsebuf == NULL) { 6564 while (1) { 6565 if ((c = lgetc(0)) == EOF) 6566 return (0); 6567 6568 if (p + 1 >= buf + sizeof(buf) - 1) { 6569 yyerror("string too long"); 6570 return (findeol()); 6571 } 6572 if (isalnum(c) || c == '_') { 6573 *p++ = (char)c; 6574 continue; 6575 } 6576 *p = '\0'; 6577 lungetc(c); 6578 break; 6579 } 6580 val = symget(buf); 6581 if (val == NULL) { 6582 yyerror("macro '%s' not defined", buf); 6583 return (findeol()); 6584 } 6585 parsebuf = val; 6586 parseindex = 0; 6587 goto top; 6588 } 6589 6590 switch (c) { 6591 case '\'': 6592 case '"': 6593 quotec = c; 6594 while (1) { 6595 if ((c = lgetc(quotec)) == EOF) 6596 return (0); 6597 if (c == '\n') { 6598 file->lineno++; 6599 continue; 6600 } else if (c == '\\') { 6601 if ((next = lgetc(quotec)) == EOF) 6602 return (0); 6603 if (next == quotec || c == ' ' || c == '\t') 6604 c = next; 6605 else if (next == '\n') { 6606 file->lineno++; 6607 continue; 6608 } 6609 else 6610 lungetc(next); 6611 } else if (c == quotec) { 6612 *p = '\0'; 6613 break; 6614 } 6615 if (p + 1 >= buf + sizeof(buf) - 1) { 6616 yyerror("string too long"); 6617 return (findeol()); 6618 } 6619 *p++ = (char)c; 6620 } 6621 yylval.v.string = strdup(buf); 6622 if (yylval.v.string == NULL) 6623 err(1, "yylex: strdup"); 6624 return (STRING); 6625 case '<': 6626 next = lgetc(0); 6627 if (next == '>') { 6628 yylval.v.i = PF_OP_XRG; 6629 return (PORTBINARY); 6630 } 6631 lungetc(next); 6632 break; 6633 case '>': 6634 next = lgetc(0); 6635 if (next == '<') { 6636 yylval.v.i = PF_OP_IRG; 6637 return (PORTBINARY); 6638 } 6639 lungetc(next); 6640 break; 6641 case '-': 6642 next = lgetc(0); 6643 if (next == '>') 6644 return (ARROW); 6645 lungetc(next); 6646 break; 6647 } 6648 6649 #define allowed_to_end_number(x) \ 6650 (isspace(x) || x == ')' || x ==',' || x == '/' || x == '}' || x == '=') 6651 6652 if (c == '-' || isdigit(c)) { 6653 do { 6654 *p++ = c; 6655 if ((unsigned)(p-buf) >= sizeof(buf)) { 6656 yyerror("string too long"); 6657 return (findeol()); 6658 } 6659 } while ((c = lgetc(0)) != EOF && isdigit(c)); 6660 lungetc(c); 6661 if (p == buf + 1 && buf[0] == '-') 6662 goto nodigits; 6663 if (c == EOF || allowed_to_end_number(c)) { 6664 const char *errstr = NULL; 6665 6666 *p = '\0'; 6667 yylval.v.number = strtonum(buf, LLONG_MIN, 6668 LLONG_MAX, &errstr); 6669 if (errstr) { 6670 yyerror("\"%s\" invalid number: %s", 6671 buf, errstr); 6672 return (findeol()); 6673 } 6674 return (NUMBER); 6675 } else { 6676 nodigits: 6677 while (p > buf + 1) 6678 lungetc(*--p); 6679 c = *--p; 6680 if (c == '-') 6681 return (c); 6682 } 6683 } 6684 6685 #define allowed_in_string(x) \ 6686 (isalnum(x) || (ispunct(x) && x != '(' && x != ')' && \ 6687 x != '{' && x != '}' && x != '<' && x != '>' && \ 6688 x != '!' && x != '=' && x != '/' && x != '#' && \ 6689 x != ',')) 6690 6691 if (isalnum(c) || c == ':' || c == '_') { 6692 do { 6693 *p++ = c; 6694 if ((unsigned)(p-buf) >= sizeof(buf)) { 6695 yyerror("string too long"); 6696 return (findeol()); 6697 } 6698 } while ((c = lgetc(0)) != EOF && (allowed_in_string(c))); 6699 lungetc(c); 6700 *p = '\0'; 6701 if ((token = lookup(buf)) == STRING) 6702 if ((yylval.v.string = strdup(buf)) == NULL) 6703 err(1, "yylex: strdup"); 6704 return (token); 6705 } 6706 if (c == '\n') { 6707 yylval.lineno = file->lineno; 6708 file->lineno++; 6709 } 6710 if (c == EOF) 6711 return (0); 6712 return (c); 6713 } 6714 6715 int 6716 check_file_secrecy(int fd, const char *fname) 6717 { 6718 struct stat st; 6719 6720 if (fstat(fd, &st)) { 6721 warn("cannot stat %s", fname); 6722 return (-1); 6723 } 6724 if (st.st_uid != 0 && st.st_uid != getuid()) { 6725 warnx("%s: owner not root or current user", fname); 6726 return (-1); 6727 } 6728 if (st.st_mode & (S_IRWXG | S_IRWXO)) { 6729 warnx("%s: group/world readable/writeable", fname); 6730 return (-1); 6731 } 6732 return (0); 6733 } 6734 6735 struct file * 6736 pushfile(const char *name, int secret) 6737 { 6738 struct file *nfile; 6739 6740 if ((nfile = calloc(1, sizeof(struct file))) == NULL || 6741 (nfile->name = strdup(name)) == NULL) { 6742 warn("malloc"); 6743 return (NULL); 6744 } 6745 if (TAILQ_FIRST(&files) == NULL && strcmp(nfile->name, "-") == 0) { 6746 nfile->stream = stdin; 6747 free(nfile->name); 6748 if ((nfile->name = strdup("stdin")) == NULL) { 6749 warn("strdup"); 6750 free(nfile); 6751 return (NULL); 6752 } 6753 } else if ((nfile->stream = fopen(nfile->name, "r")) == NULL) { 6754 warn("%s", nfile->name); 6755 free(nfile->name); 6756 free(nfile); 6757 return (NULL); 6758 } else if (secret && 6759 check_file_secrecy(fileno(nfile->stream), nfile->name)) { 6760 fclose(nfile->stream); 6761 free(nfile->name); 6762 free(nfile); 6763 return (NULL); 6764 } 6765 nfile->lineno = 1; 6766 TAILQ_INSERT_TAIL(&files, nfile, entry); 6767 return (nfile); 6768 } 6769 6770 int 6771 popfile(void) 6772 { 6773 struct file *prev; 6774 6775 if ((prev = TAILQ_PREV(file, files, entry)) != NULL) { 6776 prev->errors += file->errors; 6777 TAILQ_REMOVE(&files, file, entry); 6778 fclose(file->stream); 6779 free(file->name); 6780 free(file); 6781 file = prev; 6782 return (0); 6783 } 6784 return (EOF); 6785 } 6786 6787 int 6788 parse_config(char *filename, struct pfctl *xpf) 6789 { 6790 int errors = 0; 6791 struct sym *sym; 6792 6793 pf = xpf; 6794 errors = 0; 6795 rulestate = PFCTL_STATE_NONE; 6796 returnicmpdefault = (ICMP_UNREACH << 8) | ICMP_UNREACH_PORT; 6797 returnicmp6default = 6798 (ICMP6_DST_UNREACH << 8) | ICMP6_DST_UNREACH_NOPORT; 6799 blockpolicy = PFRULE_DROP; 6800 failpolicy = PFRULE_DROP; 6801 require_order = 1; 6802 6803 if ((file = pushfile(filename, 0)) == NULL) { 6804 warn("cannot open the main config file!"); 6805 return (-1); 6806 } 6807 6808 yyparse(); 6809 errors = file->errors; 6810 popfile(); 6811 6812 /* Free macros and check which have not been used. */ 6813 while ((sym = TAILQ_FIRST(&symhead))) { 6814 if ((pf->opts & PF_OPT_VERBOSE2) && !sym->used) 6815 fprintf(stderr, "warning: macro '%s' not " 6816 "used\n", sym->nam); 6817 free(sym->nam); 6818 free(sym->val); 6819 TAILQ_REMOVE(&symhead, sym, entry); 6820 free(sym); 6821 } 6822 6823 return (errors ? -1 : 0); 6824 } 6825 6826 int 6827 symset(const char *nam, const char *val, int persist) 6828 { 6829 struct sym *sym; 6830 6831 for (sym = TAILQ_FIRST(&symhead); sym && strcmp(nam, sym->nam); 6832 sym = TAILQ_NEXT(sym, entry)) 6833 ; /* nothing */ 6834 6835 if (sym != NULL) { 6836 if (sym->persist == 1) 6837 return (0); 6838 else { 6839 free(sym->nam); 6840 free(sym->val); 6841 TAILQ_REMOVE(&symhead, sym, entry); 6842 free(sym); 6843 } 6844 } 6845 if ((sym = calloc(1, sizeof(*sym))) == NULL) 6846 return (-1); 6847 6848 sym->nam = strdup(nam); 6849 if (sym->nam == NULL) { 6850 free(sym); 6851 return (-1); 6852 } 6853 sym->val = strdup(val); 6854 if (sym->val == NULL) { 6855 free(sym->nam); 6856 free(sym); 6857 return (-1); 6858 } 6859 sym->used = 0; 6860 sym->persist = persist; 6861 TAILQ_INSERT_TAIL(&symhead, sym, entry); 6862 return (0); 6863 } 6864 6865 int 6866 pfctl_cmdline_symset(char *s) 6867 { 6868 char *sym, *val; 6869 int ret; 6870 6871 if ((val = strrchr(s, '=')) == NULL) 6872 return (-1); 6873 6874 if ((sym = malloc(strlen(s) - strlen(val) + 1)) == NULL) 6875 err(1, "pfctl_cmdline_symset: malloc"); 6876 6877 strlcpy(sym, s, strlen(s) - strlen(val) + 1); 6878 6879 ret = symset(sym, val + 1, 1); 6880 free(sym); 6881 6882 return (ret); 6883 } 6884 6885 char * 6886 symget(const char *nam) 6887 { 6888 struct sym *sym; 6889 6890 TAILQ_FOREACH(sym, &symhead, entry) 6891 if (strcmp(nam, sym->nam) == 0) { 6892 sym->used = 1; 6893 return (sym->val); 6894 } 6895 return (NULL); 6896 } 6897 6898 void 6899 mv_rules(struct pfctl_ruleset *src, struct pfctl_ruleset *dst) 6900 { 6901 int i; 6902 struct pfctl_rule *r; 6903 6904 for (i = 0; i < PF_RULESET_MAX; ++i) { 6905 while ((r = TAILQ_FIRST(src->rules[i].active.ptr)) 6906 != NULL) { 6907 TAILQ_REMOVE(src->rules[i].active.ptr, r, entries); 6908 TAILQ_INSERT_TAIL(dst->rules[i].active.ptr, r, entries); 6909 dst->anchor->match++; 6910 } 6911 src->anchor->match = 0; 6912 while ((r = TAILQ_FIRST(src->rules[i].inactive.ptr)) 6913 != NULL) { 6914 TAILQ_REMOVE(src->rules[i].inactive.ptr, r, entries); 6915 TAILQ_INSERT_TAIL(dst->rules[i].inactive.ptr, 6916 r, entries); 6917 } 6918 } 6919 } 6920 6921 void 6922 mv_eth_rules(struct pfctl_eth_ruleset *src, struct pfctl_eth_ruleset *dst) 6923 { 6924 struct pfctl_eth_rule *r; 6925 6926 while ((r = TAILQ_FIRST(&src->rules)) != NULL) { 6927 TAILQ_REMOVE(&src->rules, r, entries); 6928 TAILQ_INSERT_TAIL(&dst->rules, r, entries); 6929 dst->anchor->match++; 6930 } 6931 src->anchor->match = 0; 6932 } 6933 6934 void 6935 decide_address_family(struct node_host *n, sa_family_t *af) 6936 { 6937 if (*af != 0 || n == NULL) 6938 return; 6939 *af = n->af; 6940 while ((n = n->next) != NULL) { 6941 if (n->af != *af) { 6942 *af = 0; 6943 return; 6944 } 6945 } 6946 } 6947 6948 void 6949 remove_invalid_hosts(struct node_host **nh, sa_family_t *af) 6950 { 6951 struct node_host *n = *nh, *prev = NULL; 6952 6953 while (n != NULL) { 6954 if (*af && n->af && n->af != *af) { 6955 /* unlink and free n */ 6956 struct node_host *next = n->next; 6957 6958 /* adjust tail pointer */ 6959 if (n == (*nh)->tail) 6960 (*nh)->tail = prev; 6961 /* adjust previous node's next pointer */ 6962 if (prev == NULL) 6963 *nh = next; 6964 else 6965 prev->next = next; 6966 /* free node */ 6967 if (n->ifname != NULL) 6968 free(n->ifname); 6969 free(n); 6970 n = next; 6971 } else { 6972 if (n->af && !*af) 6973 *af = n->af; 6974 prev = n; 6975 n = n->next; 6976 } 6977 } 6978 } 6979 6980 int 6981 invalid_redirect(struct node_host *nh, sa_family_t af) 6982 { 6983 if (!af) { 6984 struct node_host *n; 6985 6986 /* tables and dyniftl are ok without an address family */ 6987 for (n = nh; n != NULL; n = n->next) { 6988 if (n->addr.type != PF_ADDR_TABLE && 6989 n->addr.type != PF_ADDR_DYNIFTL) { 6990 yyerror("address family not given and " 6991 "translation address expands to multiple " 6992 "address families"); 6993 return (1); 6994 } 6995 } 6996 } 6997 if (nh == NULL) { 6998 yyerror("no translation address with matching address family " 6999 "found."); 7000 return (1); 7001 } 7002 return (0); 7003 } 7004 7005 int 7006 atoul(char *s, u_long *ulvalp) 7007 { 7008 u_long ulval; 7009 char *ep; 7010 7011 errno = 0; 7012 ulval = strtoul(s, &ep, 0); 7013 if (s[0] == '\0' || *ep != '\0') 7014 return (-1); 7015 if (errno == ERANGE && ulval == ULONG_MAX) 7016 return (-1); 7017 *ulvalp = ulval; 7018 return (0); 7019 } 7020 7021 int 7022 getservice(char *n) 7023 { 7024 struct servent *s; 7025 u_long ulval; 7026 7027 if (atoul(n, &ulval) == 0) { 7028 if (ulval > 65535) { 7029 yyerror("illegal port value %lu", ulval); 7030 return (-1); 7031 } 7032 return (htons(ulval)); 7033 } else { 7034 s = getservbyname(n, "tcp"); 7035 if (s == NULL) 7036 s = getservbyname(n, "udp"); 7037 if (s == NULL) 7038 s = getservbyname(n, "sctp"); 7039 if (s == NULL) { 7040 yyerror("unknown port %s", n); 7041 return (-1); 7042 } 7043 return (s->s_port); 7044 } 7045 } 7046 7047 int 7048 rule_label(struct pfctl_rule *r, char *s[PF_RULE_MAX_LABEL_COUNT]) 7049 { 7050 for (int i = 0; i < PF_RULE_MAX_LABEL_COUNT; i++) { 7051 if (s[i] == NULL) 7052 return (0); 7053 7054 if (strlcpy(r->label[i], s[i], sizeof(r->label[0])) >= 7055 sizeof(r->label[0])) { 7056 yyerror("rule label too long (max %d chars)", 7057 sizeof(r->label[0])-1); 7058 return (-1); 7059 } 7060 } 7061 return (0); 7062 } 7063 7064 int 7065 eth_rule_label(struct pfctl_eth_rule *r, char *s[PF_RULE_MAX_LABEL_COUNT]) 7066 { 7067 for (int i = 0; i < PF_RULE_MAX_LABEL_COUNT; i++) { 7068 if (s[i] == NULL) 7069 return (0); 7070 7071 if (strlcpy(r->label[i], s[i], sizeof(r->label[0])) >= 7072 sizeof(r->label[0])) { 7073 yyerror("rule label too long (max %d chars)", 7074 sizeof(r->label[0])-1); 7075 return (-1); 7076 } 7077 } 7078 return (0); 7079 } 7080 7081 u_int16_t 7082 parseicmpspec(char *w, sa_family_t af) 7083 { 7084 const struct icmpcodeent *p; 7085 u_long ulval; 7086 u_int8_t icmptype; 7087 7088 if (af == AF_INET) 7089 icmptype = returnicmpdefault >> 8; 7090 else 7091 icmptype = returnicmp6default >> 8; 7092 7093 if (atoul(w, &ulval) == -1) { 7094 if ((p = geticmpcodebyname(icmptype, w, af)) == NULL) { 7095 yyerror("unknown icmp code %s", w); 7096 return (0); 7097 } 7098 ulval = p->code; 7099 } 7100 if (ulval > 255) { 7101 yyerror("invalid icmp code %lu", ulval); 7102 return (0); 7103 } 7104 return (icmptype << 8 | ulval); 7105 } 7106 7107 int 7108 parseport(char *port, struct range *r, int extensions) 7109 { 7110 char *p = strchr(port, ':'); 7111 7112 if (p == NULL) { 7113 if ((r->a = getservice(port)) == -1) 7114 return (-1); 7115 r->b = 0; 7116 r->t = PF_OP_NONE; 7117 return (0); 7118 } 7119 if ((extensions & PPORT_STAR) && !strcmp(p+1, "*")) { 7120 *p = 0; 7121 if ((r->a = getservice(port)) == -1) 7122 return (-1); 7123 r->b = 0; 7124 r->t = PF_OP_IRG; 7125 return (0); 7126 } 7127 if ((extensions & PPORT_RANGE)) { 7128 *p++ = 0; 7129 if ((r->a = getservice(port)) == -1 || 7130 (r->b = getservice(p)) == -1) 7131 return (-1); 7132 if (r->a == r->b) { 7133 r->b = 0; 7134 r->t = PF_OP_NONE; 7135 } else 7136 r->t = PF_OP_RRG; 7137 return (0); 7138 } 7139 return (-1); 7140 } 7141 7142 int 7143 pfctl_load_anchors(int dev, struct pfctl *pf, struct pfr_buffer *trans) 7144 { 7145 struct loadanchors *la; 7146 7147 TAILQ_FOREACH(la, &loadanchorshead, entries) { 7148 if (pf->opts & PF_OPT_VERBOSE) 7149 fprintf(stderr, "\nLoading anchor %s from %s\n", 7150 la->anchorname, la->filename); 7151 if (pfctl_rules(dev, la->filename, pf->opts, pf->optimize, 7152 la->anchorname, trans) == -1) 7153 return (-1); 7154 } 7155 7156 return (0); 7157 } 7158 7159 int 7160 kw_casecmp(const void *k, const void *e) 7161 { 7162 return (strcasecmp(k, ((const struct keywords *)e)->k_name)); 7163 } 7164 7165 int 7166 map_tos(char *s, int *val) 7167 { 7168 /* DiffServ Codepoints and other TOS mappings */ 7169 const struct keywords toswords[] = { 7170 { "af11", IPTOS_DSCP_AF11 }, 7171 { "af12", IPTOS_DSCP_AF12 }, 7172 { "af13", IPTOS_DSCP_AF13 }, 7173 { "af21", IPTOS_DSCP_AF21 }, 7174 { "af22", IPTOS_DSCP_AF22 }, 7175 { "af23", IPTOS_DSCP_AF23 }, 7176 { "af31", IPTOS_DSCP_AF31 }, 7177 { "af32", IPTOS_DSCP_AF32 }, 7178 { "af33", IPTOS_DSCP_AF33 }, 7179 { "af41", IPTOS_DSCP_AF41 }, 7180 { "af42", IPTOS_DSCP_AF42 }, 7181 { "af43", IPTOS_DSCP_AF43 }, 7182 { "critical", IPTOS_PREC_CRITIC_ECP }, 7183 { "cs0", IPTOS_DSCP_CS0 }, 7184 { "cs1", IPTOS_DSCP_CS1 }, 7185 { "cs2", IPTOS_DSCP_CS2 }, 7186 { "cs3", IPTOS_DSCP_CS3 }, 7187 { "cs4", IPTOS_DSCP_CS4 }, 7188 { "cs5", IPTOS_DSCP_CS5 }, 7189 { "cs6", IPTOS_DSCP_CS6 }, 7190 { "cs7", IPTOS_DSCP_CS7 }, 7191 { "ef", IPTOS_DSCP_EF }, 7192 { "inetcontrol", IPTOS_PREC_INTERNETCONTROL }, 7193 { "lowdelay", IPTOS_LOWDELAY }, 7194 { "netcontrol", IPTOS_PREC_NETCONTROL }, 7195 { "reliability", IPTOS_RELIABILITY }, 7196 { "throughput", IPTOS_THROUGHPUT }, 7197 { "va", IPTOS_DSCP_VA } 7198 }; 7199 const struct keywords *p; 7200 7201 p = bsearch(s, toswords, sizeof(toswords)/sizeof(toswords[0]), 7202 sizeof(toswords[0]), kw_casecmp); 7203 7204 if (p) { 7205 *val = p->k_val; 7206 return (1); 7207 } 7208 return (0); 7209 } 7210 7211 int 7212 rt_tableid_max(void) 7213 { 7214 #ifdef __FreeBSD__ 7215 int fibs; 7216 size_t l = sizeof(fibs); 7217 7218 if (sysctlbyname("net.fibs", &fibs, &l, NULL, 0) == -1) 7219 fibs = 16; /* XXX RT_MAXFIBS, at least limit it some. */ 7220 /* 7221 * As the OpenBSD code only compares > and not >= we need to adjust 7222 * here given we only accept values of 0..n and want to avoid #ifdefs 7223 * in the grammar. 7224 */ 7225 return (fibs - 1); 7226 #else 7227 return (RT_TABLEID_MAX); 7228 #endif 7229 } 7230 7231 struct node_mac* 7232 node_mac_from_string(const char *str) 7233 { 7234 struct node_mac *m; 7235 7236 m = calloc(1, sizeof(struct node_mac)); 7237 if (m == NULL) 7238 err(1, "mac: calloc"); 7239 7240 if (sscanf(str, "%02hhx:%02hhx:%02hhx:%02hhx:%02hhx:%02hhx", 7241 &m->mac[0], &m->mac[1], &m->mac[2], &m->mac[3], &m->mac[4], 7242 &m->mac[5]) != 6) { 7243 free(m); 7244 yyerror("invalid MAC address"); 7245 return (NULL); 7246 } 7247 7248 memset(m->mask, 0xff, ETHER_ADDR_LEN); 7249 m->isset = true; 7250 m->next = NULL; 7251 m->tail = m; 7252 7253 return (m); 7254 } 7255 7256 struct node_mac* 7257 node_mac_from_string_masklen(const char *str, int masklen) 7258 { 7259 struct node_mac *m; 7260 7261 if (masklen < 0 || masklen > (ETHER_ADDR_LEN * 8)) { 7262 yyerror("invalid MAC mask length"); 7263 return (NULL); 7264 } 7265 7266 m = node_mac_from_string(str); 7267 if (m == NULL) 7268 return (NULL); 7269 7270 memset(m->mask, 0, ETHER_ADDR_LEN); 7271 for (int i = 0; i < masklen; i++) 7272 m->mask[i / 8] |= 1 << (i % 8); 7273 7274 return (m); 7275 } 7276 7277 struct node_mac* 7278 node_mac_from_string_mask(const char *str, const char *mask) 7279 { 7280 struct node_mac *m; 7281 7282 m = node_mac_from_string(str); 7283 if (m == NULL) 7284 return (NULL); 7285 7286 if (sscanf(mask, "%02hhx:%02hhx:%02hhx:%02hhx:%02hhx:%02hhx", 7287 &m->mask[0], &m->mask[1], &m->mask[2], &m->mask[3], &m->mask[4], 7288 &m->mask[5]) != 6) { 7289 free(m); 7290 yyerror("invalid MAC mask"); 7291 return (NULL); 7292 } 7293 7294 return (m); 7295 } 7296