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 NE LE GE 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 ($1 == NULL) { 3576 freehostlist($3); 3577 $$ = $1; 3578 } else if ($3 == NULL) { 3579 freehostlist($1); 3580 $$ = $3; 3581 } else { 3582 $1->tail->next = $3; 3583 $1->tail = $3->tail; 3584 $$ = $1; 3585 } 3586 } 3587 ; 3588 3589 xhost : not host { 3590 struct node_host *n; 3591 3592 for (n = $2; n != NULL; n = n->next) 3593 n->not = $1; 3594 $$ = $2; 3595 } 3596 | not NOROUTE { 3597 $$ = calloc(1, sizeof(struct node_host)); 3598 if ($$ == NULL) 3599 err(1, "xhost: calloc"); 3600 $$->addr.type = PF_ADDR_NOROUTE; 3601 $$->next = NULL; 3602 $$->not = $1; 3603 $$->tail = $$; 3604 } 3605 | not URPFFAILED { 3606 $$ = calloc(1, sizeof(struct node_host)); 3607 if ($$ == NULL) 3608 err(1, "xhost: calloc"); 3609 $$->addr.type = PF_ADDR_URPFFAILED; 3610 $$->next = NULL; 3611 $$->not = $1; 3612 $$->tail = $$; 3613 } 3614 ; 3615 3616 host : STRING { 3617 if (($$ = host($1)) == NULL) { 3618 /* error. "any" is handled elsewhere */ 3619 free($1); 3620 yyerror("could not parse host specification"); 3621 YYERROR; 3622 } 3623 free($1); 3624 3625 } 3626 | STRING '-' STRING { 3627 struct node_host *b, *e; 3628 3629 if ((b = host($1)) == NULL || (e = host($3)) == NULL) { 3630 free($1); 3631 free($3); 3632 yyerror("could not parse host specification"); 3633 YYERROR; 3634 } 3635 if (b->af != e->af || 3636 b->addr.type != PF_ADDR_ADDRMASK || 3637 e->addr.type != PF_ADDR_ADDRMASK || 3638 unmask(&b->addr.v.a.mask, b->af) != 3639 (b->af == AF_INET ? 32 : 128) || 3640 unmask(&e->addr.v.a.mask, e->af) != 3641 (e->af == AF_INET ? 32 : 128) || 3642 b->next != NULL || b->not || 3643 e->next != NULL || e->not) { 3644 free(b); 3645 free(e); 3646 free($1); 3647 free($3); 3648 yyerror("invalid address range"); 3649 YYERROR; 3650 } 3651 memcpy(&b->addr.v.a.mask, &e->addr.v.a.addr, 3652 sizeof(b->addr.v.a.mask)); 3653 b->addr.type = PF_ADDR_RANGE; 3654 $$ = b; 3655 free(e); 3656 free($1); 3657 free($3); 3658 } 3659 | STRING '/' NUMBER { 3660 char *buf; 3661 3662 if (asprintf(&buf, "%s/%lld", $1, (long long)$3) == -1) 3663 err(1, "host: asprintf"); 3664 free($1); 3665 if (($$ = host(buf)) == NULL) { 3666 /* error. "any" is handled elsewhere */ 3667 free(buf); 3668 yyerror("could not parse host specification"); 3669 YYERROR; 3670 } 3671 free(buf); 3672 } 3673 | NUMBER '/' NUMBER { 3674 char *buf; 3675 3676 /* ie. for 10/8 parsing */ 3677 #ifdef __FreeBSD__ 3678 if (asprintf(&buf, "%lld/%lld", (long long)$1, (long long)$3) == -1) 3679 #else 3680 if (asprintf(&buf, "%lld/%lld", $1, $3) == -1) 3681 #endif 3682 err(1, "host: asprintf"); 3683 if (($$ = host(buf)) == NULL) { 3684 /* error. "any" is handled elsewhere */ 3685 free(buf); 3686 yyerror("could not parse host specification"); 3687 YYERROR; 3688 } 3689 free(buf); 3690 } 3691 | dynaddr 3692 | dynaddr '/' NUMBER { 3693 struct node_host *n; 3694 3695 if ($3 < 0 || $3 > 128) { 3696 yyerror("bit number too big"); 3697 YYERROR; 3698 } 3699 $$ = $1; 3700 for (n = $1; n != NULL; n = n->next) 3701 set_ipmask(n, $3); 3702 } 3703 | '<' STRING '>' { 3704 if (strlen($2) >= PF_TABLE_NAME_SIZE) { 3705 yyerror("table name '%s' too long", $2); 3706 free($2); 3707 YYERROR; 3708 } 3709 $$ = calloc(1, sizeof(struct node_host)); 3710 if ($$ == NULL) 3711 err(1, "host: calloc"); 3712 $$->addr.type = PF_ADDR_TABLE; 3713 if (strlcpy($$->addr.v.tblname, $2, 3714 sizeof($$->addr.v.tblname)) >= 3715 sizeof($$->addr.v.tblname)) 3716 errx(1, "host: strlcpy"); 3717 free($2); 3718 $$->next = NULL; 3719 $$->tail = $$; 3720 } 3721 ; 3722 3723 number : NUMBER 3724 | STRING { 3725 u_long ulval; 3726 3727 if (atoul($1, &ulval) == -1) { 3728 yyerror("%s is not a number", $1); 3729 free($1); 3730 YYERROR; 3731 } else 3732 $$ = ulval; 3733 free($1); 3734 } 3735 ; 3736 3737 dynaddr : '(' STRING ')' { 3738 int flags = 0; 3739 char *p, *op; 3740 3741 op = $2; 3742 if (!isalpha(op[0])) { 3743 yyerror("invalid interface name '%s'", op); 3744 free(op); 3745 YYERROR; 3746 } 3747 while ((p = strrchr($2, ':')) != NULL) { 3748 if (!strcmp(p+1, "network")) 3749 flags |= PFI_AFLAG_NETWORK; 3750 else if (!strcmp(p+1, "broadcast")) 3751 flags |= PFI_AFLAG_BROADCAST; 3752 else if (!strcmp(p+1, "peer")) 3753 flags |= PFI_AFLAG_PEER; 3754 else if (!strcmp(p+1, "0")) 3755 flags |= PFI_AFLAG_NOALIAS; 3756 else { 3757 yyerror("interface %s has bad modifier", 3758 $2); 3759 free(op); 3760 YYERROR; 3761 } 3762 *p = '\0'; 3763 } 3764 if (flags & (flags - 1) & PFI_AFLAG_MODEMASK) { 3765 free(op); 3766 yyerror("illegal combination of " 3767 "interface modifiers"); 3768 YYERROR; 3769 } 3770 $$ = calloc(1, sizeof(struct node_host)); 3771 if ($$ == NULL) 3772 err(1, "address: calloc"); 3773 $$->af = 0; 3774 set_ipmask($$, 128); 3775 $$->addr.type = PF_ADDR_DYNIFTL; 3776 $$->addr.iflags = flags; 3777 if (strlcpy($$->addr.v.ifname, $2, 3778 sizeof($$->addr.v.ifname)) >= 3779 sizeof($$->addr.v.ifname)) { 3780 free(op); 3781 free($$); 3782 yyerror("interface name too long"); 3783 YYERROR; 3784 } 3785 free(op); 3786 $$->next = NULL; 3787 $$->tail = $$; 3788 } 3789 ; 3790 3791 portspec : port_item { $$ = $1; } 3792 | '{' optnl port_list '}' { $$ = $3; } 3793 ; 3794 3795 port_list : port_item optnl { $$ = $1; } 3796 | port_list comma port_item optnl { 3797 $1->tail->next = $3; 3798 $1->tail = $3; 3799 $$ = $1; 3800 } 3801 ; 3802 3803 port_item : portrange { 3804 $$ = calloc(1, sizeof(struct node_port)); 3805 if ($$ == NULL) 3806 err(1, "port_item: calloc"); 3807 $$->port[0] = $1.a; 3808 $$->port[1] = $1.b; 3809 if ($1.t) 3810 $$->op = PF_OP_RRG; 3811 else 3812 $$->op = PF_OP_EQ; 3813 $$->next = NULL; 3814 $$->tail = $$; 3815 } 3816 | unaryop portrange { 3817 if ($2.t) { 3818 yyerror("':' cannot be used with an other " 3819 "port operator"); 3820 YYERROR; 3821 } 3822 $$ = calloc(1, sizeof(struct node_port)); 3823 if ($$ == NULL) 3824 err(1, "port_item: calloc"); 3825 $$->port[0] = $2.a; 3826 $$->port[1] = $2.b; 3827 $$->op = $1; 3828 $$->next = NULL; 3829 $$->tail = $$; 3830 } 3831 | portrange PORTBINARY portrange { 3832 if ($1.t || $3.t) { 3833 yyerror("':' cannot be used with an other " 3834 "port operator"); 3835 YYERROR; 3836 } 3837 $$ = calloc(1, sizeof(struct node_port)); 3838 if ($$ == NULL) 3839 err(1, "port_item: calloc"); 3840 $$->port[0] = $1.a; 3841 $$->port[1] = $3.a; 3842 $$->op = $2; 3843 $$->next = NULL; 3844 $$->tail = $$; 3845 } 3846 ; 3847 3848 portplain : numberstring { 3849 if (parseport($1, &$$, 0) == -1) { 3850 free($1); 3851 YYERROR; 3852 } 3853 free($1); 3854 } 3855 ; 3856 3857 portrange : numberstring { 3858 if (parseport($1, &$$, PPORT_RANGE) == -1) { 3859 free($1); 3860 YYERROR; 3861 } 3862 free($1); 3863 } 3864 ; 3865 3866 uids : uid_item { $$ = $1; } 3867 | '{' optnl uid_list '}' { $$ = $3; } 3868 ; 3869 3870 uid_list : uid_item optnl { $$ = $1; } 3871 | uid_list comma uid_item optnl { 3872 $1->tail->next = $3; 3873 $1->tail = $3; 3874 $$ = $1; 3875 } 3876 ; 3877 3878 uid_item : uid { 3879 $$ = calloc(1, sizeof(struct node_uid)); 3880 if ($$ == NULL) 3881 err(1, "uid_item: calloc"); 3882 $$->uid[0] = $1; 3883 $$->uid[1] = $1; 3884 $$->op = PF_OP_EQ; 3885 $$->next = NULL; 3886 $$->tail = $$; 3887 } 3888 | unaryop uid { 3889 if ($2 == UID_MAX && $1 != PF_OP_EQ && $1 != PF_OP_NE) { 3890 yyerror("user unknown requires operator = or " 3891 "!="); 3892 YYERROR; 3893 } 3894 $$ = calloc(1, sizeof(struct node_uid)); 3895 if ($$ == NULL) 3896 err(1, "uid_item: calloc"); 3897 $$->uid[0] = $2; 3898 $$->uid[1] = $2; 3899 $$->op = $1; 3900 $$->next = NULL; 3901 $$->tail = $$; 3902 } 3903 | uid PORTBINARY uid { 3904 if ($1 == UID_MAX || $3 == UID_MAX) { 3905 yyerror("user unknown requires operator = or " 3906 "!="); 3907 YYERROR; 3908 } 3909 $$ = calloc(1, sizeof(struct node_uid)); 3910 if ($$ == NULL) 3911 err(1, "uid_item: calloc"); 3912 $$->uid[0] = $1; 3913 $$->uid[1] = $3; 3914 $$->op = $2; 3915 $$->next = NULL; 3916 $$->tail = $$; 3917 } 3918 ; 3919 3920 uid : STRING { 3921 if (!strcmp($1, "unknown")) 3922 $$ = UID_MAX; 3923 else { 3924 struct passwd *pw; 3925 3926 if ((pw = getpwnam($1)) == NULL) { 3927 yyerror("unknown user %s", $1); 3928 free($1); 3929 YYERROR; 3930 } 3931 $$ = pw->pw_uid; 3932 } 3933 free($1); 3934 } 3935 | NUMBER { 3936 if ($1 < 0 || $1 >= UID_MAX) { 3937 yyerror("illegal uid value %lu", $1); 3938 YYERROR; 3939 } 3940 $$ = $1; 3941 } 3942 ; 3943 3944 gids : gid_item { $$ = $1; } 3945 | '{' optnl gid_list '}' { $$ = $3; } 3946 ; 3947 3948 gid_list : gid_item optnl { $$ = $1; } 3949 | gid_list comma gid_item optnl { 3950 $1->tail->next = $3; 3951 $1->tail = $3; 3952 $$ = $1; 3953 } 3954 ; 3955 3956 gid_item : gid { 3957 $$ = calloc(1, sizeof(struct node_gid)); 3958 if ($$ == NULL) 3959 err(1, "gid_item: calloc"); 3960 $$->gid[0] = $1; 3961 $$->gid[1] = $1; 3962 $$->op = PF_OP_EQ; 3963 $$->next = NULL; 3964 $$->tail = $$; 3965 } 3966 | unaryop gid { 3967 if ($2 == GID_MAX && $1 != PF_OP_EQ && $1 != PF_OP_NE) { 3968 yyerror("group unknown requires operator = or " 3969 "!="); 3970 YYERROR; 3971 } 3972 $$ = calloc(1, sizeof(struct node_gid)); 3973 if ($$ == NULL) 3974 err(1, "gid_item: calloc"); 3975 $$->gid[0] = $2; 3976 $$->gid[1] = $2; 3977 $$->op = $1; 3978 $$->next = NULL; 3979 $$->tail = $$; 3980 } 3981 | gid PORTBINARY gid { 3982 if ($1 == GID_MAX || $3 == GID_MAX) { 3983 yyerror("group unknown requires operator = or " 3984 "!="); 3985 YYERROR; 3986 } 3987 $$ = calloc(1, sizeof(struct node_gid)); 3988 if ($$ == NULL) 3989 err(1, "gid_item: calloc"); 3990 $$->gid[0] = $1; 3991 $$->gid[1] = $3; 3992 $$->op = $2; 3993 $$->next = NULL; 3994 $$->tail = $$; 3995 } 3996 ; 3997 3998 gid : STRING { 3999 if (!strcmp($1, "unknown")) 4000 $$ = GID_MAX; 4001 else { 4002 struct group *grp; 4003 4004 if ((grp = getgrnam($1)) == NULL) { 4005 yyerror("unknown group %s", $1); 4006 free($1); 4007 YYERROR; 4008 } 4009 $$ = grp->gr_gid; 4010 } 4011 free($1); 4012 } 4013 | NUMBER { 4014 if ($1 < 0 || $1 >= GID_MAX) { 4015 yyerror("illegal gid value %lu", $1); 4016 YYERROR; 4017 } 4018 $$ = $1; 4019 } 4020 ; 4021 4022 flag : STRING { 4023 int f; 4024 4025 if ((f = parse_flags($1)) < 0) { 4026 yyerror("bad flags %s", $1); 4027 free($1); 4028 YYERROR; 4029 } 4030 free($1); 4031 $$.b1 = f; 4032 } 4033 ; 4034 4035 flags : FLAGS flag '/' flag { $$.b1 = $2.b1; $$.b2 = $4.b1; } 4036 | FLAGS '/' flag { $$.b1 = 0; $$.b2 = $3.b1; } 4037 | FLAGS ANY { $$.b1 = 0; $$.b2 = 0; } 4038 ; 4039 4040 icmpspec : ICMPTYPE icmp_item { $$ = $2; } 4041 | ICMPTYPE '{' optnl icmp_list '}' { $$ = $4; } 4042 | ICMP6TYPE icmp6_item { $$ = $2; } 4043 | ICMP6TYPE '{' optnl icmp6_list '}' { $$ = $4; } 4044 ; 4045 4046 icmp_list : icmp_item optnl { $$ = $1; } 4047 | icmp_list comma icmp_item optnl { 4048 $1->tail->next = $3; 4049 $1->tail = $3; 4050 $$ = $1; 4051 } 4052 ; 4053 4054 icmp6_list : icmp6_item optnl { $$ = $1; } 4055 | icmp6_list comma icmp6_item optnl { 4056 $1->tail->next = $3; 4057 $1->tail = $3; 4058 $$ = $1; 4059 } 4060 ; 4061 4062 icmp_item : icmptype { 4063 $$ = calloc(1, sizeof(struct node_icmp)); 4064 if ($$ == NULL) 4065 err(1, "icmp_item: calloc"); 4066 $$->type = $1; 4067 $$->code = 0; 4068 $$->proto = IPPROTO_ICMP; 4069 $$->next = NULL; 4070 $$->tail = $$; 4071 } 4072 | icmptype CODE STRING { 4073 const struct icmpcodeent *p; 4074 4075 if ((p = geticmpcodebyname($1-1, $3, AF_INET)) == NULL) { 4076 yyerror("unknown icmp-code %s", $3); 4077 free($3); 4078 YYERROR; 4079 } 4080 4081 free($3); 4082 $$ = calloc(1, sizeof(struct node_icmp)); 4083 if ($$ == NULL) 4084 err(1, "icmp_item: calloc"); 4085 $$->type = $1; 4086 $$->code = p->code + 1; 4087 $$->proto = IPPROTO_ICMP; 4088 $$->next = NULL; 4089 $$->tail = $$; 4090 } 4091 | icmptype CODE NUMBER { 4092 if ($3 < 0 || $3 > 255) { 4093 yyerror("illegal icmp-code %lu", $3); 4094 YYERROR; 4095 } 4096 $$ = calloc(1, sizeof(struct node_icmp)); 4097 if ($$ == NULL) 4098 err(1, "icmp_item: calloc"); 4099 $$->type = $1; 4100 $$->code = $3 + 1; 4101 $$->proto = IPPROTO_ICMP; 4102 $$->next = NULL; 4103 $$->tail = $$; 4104 } 4105 ; 4106 4107 icmp6_item : icmp6type { 4108 $$ = calloc(1, sizeof(struct node_icmp)); 4109 if ($$ == NULL) 4110 err(1, "icmp_item: calloc"); 4111 $$->type = $1; 4112 $$->code = 0; 4113 $$->proto = IPPROTO_ICMPV6; 4114 $$->next = NULL; 4115 $$->tail = $$; 4116 } 4117 | icmp6type CODE STRING { 4118 const struct icmpcodeent *p; 4119 4120 if ((p = geticmpcodebyname($1-1, $3, AF_INET6)) == NULL) { 4121 yyerror("unknown icmp6-code %s", $3); 4122 free($3); 4123 YYERROR; 4124 } 4125 free($3); 4126 4127 $$ = calloc(1, sizeof(struct node_icmp)); 4128 if ($$ == NULL) 4129 err(1, "icmp_item: calloc"); 4130 $$->type = $1; 4131 $$->code = p->code + 1; 4132 $$->proto = IPPROTO_ICMPV6; 4133 $$->next = NULL; 4134 $$->tail = $$; 4135 } 4136 | icmp6type CODE NUMBER { 4137 if ($3 < 0 || $3 > 255) { 4138 yyerror("illegal icmp-code %lu", $3); 4139 YYERROR; 4140 } 4141 $$ = calloc(1, sizeof(struct node_icmp)); 4142 if ($$ == NULL) 4143 err(1, "icmp_item: calloc"); 4144 $$->type = $1; 4145 $$->code = $3 + 1; 4146 $$->proto = IPPROTO_ICMPV6; 4147 $$->next = NULL; 4148 $$->tail = $$; 4149 } 4150 ; 4151 4152 icmptype : STRING { 4153 const struct icmptypeent *p; 4154 4155 if ((p = geticmptypebyname($1, AF_INET)) == NULL) { 4156 yyerror("unknown icmp-type %s", $1); 4157 free($1); 4158 YYERROR; 4159 } 4160 $$ = p->type + 1; 4161 free($1); 4162 } 4163 | NUMBER { 4164 if ($1 < 0 || $1 > 255) { 4165 yyerror("illegal icmp-type %lu", $1); 4166 YYERROR; 4167 } 4168 $$ = $1 + 1; 4169 } 4170 ; 4171 4172 icmp6type : STRING { 4173 const struct icmptypeent *p; 4174 4175 if ((p = geticmptypebyname($1, AF_INET6)) == 4176 NULL) { 4177 yyerror("unknown icmp6-type %s", $1); 4178 free($1); 4179 YYERROR; 4180 } 4181 $$ = p->type + 1; 4182 free($1); 4183 } 4184 | NUMBER { 4185 if ($1 < 0 || $1 > 255) { 4186 yyerror("illegal icmp6-type %lu", $1); 4187 YYERROR; 4188 } 4189 $$ = $1 + 1; 4190 } 4191 ; 4192 4193 tos : STRING { 4194 int val; 4195 char *end; 4196 4197 if (map_tos($1, &val)) 4198 $$ = val; 4199 else if ($1[0] == '0' && $1[1] == 'x') { 4200 errno = 0; 4201 $$ = strtoul($1, &end, 16); 4202 if (errno || *end != '\0') 4203 $$ = 256; 4204 } else 4205 $$ = 256; /* flag bad argument */ 4206 if ($$ < 0 || $$ > 255) { 4207 yyerror("illegal tos value %s", $1); 4208 free($1); 4209 YYERROR; 4210 } 4211 free($1); 4212 } 4213 | NUMBER { 4214 $$ = $1; 4215 if ($$ < 0 || $$ > 255) { 4216 yyerror("illegal tos value %s", $1); 4217 YYERROR; 4218 } 4219 } 4220 ; 4221 4222 sourcetrack : SOURCETRACK { $$ = PF_SRCTRACK; } 4223 | SOURCETRACK GLOBAL { $$ = PF_SRCTRACK_GLOBAL; } 4224 | SOURCETRACK RULE { $$ = PF_SRCTRACK_RULE; } 4225 ; 4226 4227 statelock : IFBOUND { 4228 $$ = PFRULE_IFBOUND; 4229 } 4230 | FLOATING { 4231 $$ = 0; 4232 } 4233 ; 4234 4235 keep : NO STATE { 4236 $$.action = 0; 4237 $$.options = NULL; 4238 } 4239 | KEEP STATE state_opt_spec { 4240 $$.action = PF_STATE_NORMAL; 4241 $$.options = $3; 4242 } 4243 | MODULATE STATE state_opt_spec { 4244 $$.action = PF_STATE_MODULATE; 4245 $$.options = $3; 4246 } 4247 | SYNPROXY STATE state_opt_spec { 4248 $$.action = PF_STATE_SYNPROXY; 4249 $$.options = $3; 4250 } 4251 ; 4252 4253 flush : /* empty */ { $$ = 0; } 4254 | FLUSH { $$ = PF_FLUSH; } 4255 | FLUSH GLOBAL { 4256 $$ = PF_FLUSH | PF_FLUSH_GLOBAL; 4257 } 4258 ; 4259 4260 state_opt_spec : '(' state_opt_list ')' { $$ = $2; } 4261 | /* empty */ { $$ = NULL; } 4262 ; 4263 4264 state_opt_list : state_opt_item { $$ = $1; } 4265 | state_opt_list comma state_opt_item { 4266 $1->tail->next = $3; 4267 $1->tail = $3; 4268 $$ = $1; 4269 } 4270 ; 4271 4272 state_opt_item : MAXIMUM NUMBER { 4273 if ($2 < 0 || $2 > UINT_MAX) { 4274 yyerror("only positive values permitted"); 4275 YYERROR; 4276 } 4277 $$ = calloc(1, sizeof(struct node_state_opt)); 4278 if ($$ == NULL) 4279 err(1, "state_opt_item: calloc"); 4280 $$->type = PF_STATE_OPT_MAX; 4281 $$->data.max_states = $2; 4282 $$->next = NULL; 4283 $$->tail = $$; 4284 } 4285 | NOSYNC { 4286 $$ = calloc(1, sizeof(struct node_state_opt)); 4287 if ($$ == NULL) 4288 err(1, "state_opt_item: calloc"); 4289 $$->type = PF_STATE_OPT_NOSYNC; 4290 $$->next = NULL; 4291 $$->tail = $$; 4292 } 4293 | MAXSRCSTATES NUMBER { 4294 if ($2 < 0 || $2 > UINT_MAX) { 4295 yyerror("only positive values permitted"); 4296 YYERROR; 4297 } 4298 $$ = calloc(1, sizeof(struct node_state_opt)); 4299 if ($$ == NULL) 4300 err(1, "state_opt_item: calloc"); 4301 $$->type = PF_STATE_OPT_MAX_SRC_STATES; 4302 $$->data.max_src_states = $2; 4303 $$->next = NULL; 4304 $$->tail = $$; 4305 } 4306 | MAXSRCCONN NUMBER { 4307 if ($2 < 0 || $2 > UINT_MAX) { 4308 yyerror("only positive values permitted"); 4309 YYERROR; 4310 } 4311 $$ = calloc(1, sizeof(struct node_state_opt)); 4312 if ($$ == NULL) 4313 err(1, "state_opt_item: calloc"); 4314 $$->type = PF_STATE_OPT_MAX_SRC_CONN; 4315 $$->data.max_src_conn = $2; 4316 $$->next = NULL; 4317 $$->tail = $$; 4318 } 4319 | MAXSRCCONNRATE NUMBER '/' NUMBER { 4320 if ($2 < 0 || $2 > UINT_MAX || 4321 $4 < 0 || $4 > UINT_MAX) { 4322 yyerror("only positive values permitted"); 4323 YYERROR; 4324 } 4325 $$ = calloc(1, sizeof(struct node_state_opt)); 4326 if ($$ == NULL) 4327 err(1, "state_opt_item: calloc"); 4328 $$->type = PF_STATE_OPT_MAX_SRC_CONN_RATE; 4329 $$->data.max_src_conn_rate.limit = $2; 4330 $$->data.max_src_conn_rate.seconds = $4; 4331 $$->next = NULL; 4332 $$->tail = $$; 4333 } 4334 | OVERLOAD '<' STRING '>' flush { 4335 if (strlen($3) >= PF_TABLE_NAME_SIZE) { 4336 yyerror("table name '%s' too long", $3); 4337 free($3); 4338 YYERROR; 4339 } 4340 $$ = calloc(1, sizeof(struct node_state_opt)); 4341 if ($$ == NULL) 4342 err(1, "state_opt_item: calloc"); 4343 if (strlcpy($$->data.overload.tblname, $3, 4344 PF_TABLE_NAME_SIZE) >= PF_TABLE_NAME_SIZE) 4345 errx(1, "state_opt_item: strlcpy"); 4346 free($3); 4347 $$->type = PF_STATE_OPT_OVERLOAD; 4348 $$->data.overload.flush = $5; 4349 $$->next = NULL; 4350 $$->tail = $$; 4351 } 4352 | MAXSRCNODES NUMBER { 4353 if ($2 < 0 || $2 > UINT_MAX) { 4354 yyerror("only positive values permitted"); 4355 YYERROR; 4356 } 4357 $$ = calloc(1, sizeof(struct node_state_opt)); 4358 if ($$ == NULL) 4359 err(1, "state_opt_item: calloc"); 4360 $$->type = PF_STATE_OPT_MAX_SRC_NODES; 4361 $$->data.max_src_nodes = $2; 4362 $$->next = NULL; 4363 $$->tail = $$; 4364 } 4365 | sourcetrack { 4366 $$ = calloc(1, sizeof(struct node_state_opt)); 4367 if ($$ == NULL) 4368 err(1, "state_opt_item: calloc"); 4369 $$->type = PF_STATE_OPT_SRCTRACK; 4370 $$->data.src_track = $1; 4371 $$->next = NULL; 4372 $$->tail = $$; 4373 } 4374 | statelock { 4375 $$ = calloc(1, sizeof(struct node_state_opt)); 4376 if ($$ == NULL) 4377 err(1, "state_opt_item: calloc"); 4378 $$->type = PF_STATE_OPT_STATELOCK; 4379 $$->data.statelock = $1; 4380 $$->next = NULL; 4381 $$->tail = $$; 4382 } 4383 | SLOPPY { 4384 $$ = calloc(1, sizeof(struct node_state_opt)); 4385 if ($$ == NULL) 4386 err(1, "state_opt_item: calloc"); 4387 $$->type = PF_STATE_OPT_SLOPPY; 4388 $$->next = NULL; 4389 $$->tail = $$; 4390 } 4391 | PFLOW { 4392 $$ = calloc(1, sizeof(struct node_state_opt)); 4393 if ($$ == NULL) 4394 err(1, "state_opt_item: calloc"); 4395 $$->type = PF_STATE_OPT_PFLOW; 4396 $$->next = NULL; 4397 $$->tail = $$; 4398 } 4399 | STRING NUMBER { 4400 int i; 4401 4402 if ($2 < 0 || $2 > UINT_MAX) { 4403 yyerror("only positive values permitted"); 4404 YYERROR; 4405 } 4406 for (i = 0; pf_timeouts[i].name && 4407 strcmp(pf_timeouts[i].name, $1); ++i) 4408 ; /* nothing */ 4409 if (!pf_timeouts[i].name) { 4410 yyerror("illegal timeout name %s", $1); 4411 free($1); 4412 YYERROR; 4413 } 4414 if (strchr(pf_timeouts[i].name, '.') == NULL) { 4415 yyerror("illegal state timeout %s", $1); 4416 free($1); 4417 YYERROR; 4418 } 4419 free($1); 4420 $$ = calloc(1, sizeof(struct node_state_opt)); 4421 if ($$ == NULL) 4422 err(1, "state_opt_item: calloc"); 4423 $$->type = PF_STATE_OPT_TIMEOUT; 4424 $$->data.timeout.number = pf_timeouts[i].timeout; 4425 $$->data.timeout.seconds = $2; 4426 $$->next = NULL; 4427 $$->tail = $$; 4428 } 4429 ; 4430 4431 label : LABEL STRING { 4432 $$ = $2; 4433 } 4434 ; 4435 4436 etherqname : QUEUE STRING { 4437 $$.qname = $2; 4438 } 4439 | QUEUE '(' STRING ')' { 4440 $$.qname = $3; 4441 } 4442 ; 4443 4444 qname : QUEUE STRING { 4445 $$.qname = $2; 4446 $$.pqname = NULL; 4447 } 4448 | QUEUE '(' STRING ')' { 4449 $$.qname = $3; 4450 $$.pqname = NULL; 4451 } 4452 | QUEUE '(' STRING comma STRING ')' { 4453 $$.qname = $3; 4454 $$.pqname = $5; 4455 } 4456 ; 4457 4458 no : /* empty */ { $$ = 0; } 4459 | NO { $$ = 1; } 4460 ; 4461 4462 portstar : numberstring { 4463 if (parseport($1, &$$, PPORT_RANGE|PPORT_STAR) == -1) { 4464 free($1); 4465 YYERROR; 4466 } 4467 free($1); 4468 } 4469 ; 4470 4471 redirspec : host { $$ = $1; } 4472 | '{' optnl redir_host_list '}' { $$ = $3; } 4473 ; 4474 4475 redir_host_list : host optnl { $$ = $1; } 4476 | redir_host_list comma host optnl { 4477 $1->tail->next = $3; 4478 $1->tail = $3->tail; 4479 $$ = $1; 4480 } 4481 ; 4482 4483 redirpool : /* empty */ { $$ = NULL; } 4484 | ARROW redirspec { 4485 $$ = calloc(1, sizeof(struct redirection)); 4486 if ($$ == NULL) 4487 err(1, "redirection: calloc"); 4488 $$->host = $2; 4489 $$->rport.a = $$->rport.b = $$->rport.t = 0; 4490 } 4491 | ARROW redirspec PORT portstar { 4492 $$ = calloc(1, sizeof(struct redirection)); 4493 if ($$ == NULL) 4494 err(1, "redirection: calloc"); 4495 $$->host = $2; 4496 $$->rport = $4; 4497 } 4498 ; 4499 4500 hashkey : /* empty */ 4501 { 4502 $$ = calloc(1, sizeof(struct pf_poolhashkey)); 4503 if ($$ == NULL) 4504 err(1, "hashkey: calloc"); 4505 $$->key32[0] = arc4random(); 4506 $$->key32[1] = arc4random(); 4507 $$->key32[2] = arc4random(); 4508 $$->key32[3] = arc4random(); 4509 } 4510 | string 4511 { 4512 if (!strncmp($1, "0x", 2)) { 4513 if (strlen($1) != 34) { 4514 free($1); 4515 yyerror("hex key must be 128 bits " 4516 "(32 hex digits) long"); 4517 YYERROR; 4518 } 4519 $$ = calloc(1, sizeof(struct pf_poolhashkey)); 4520 if ($$ == NULL) 4521 err(1, "hashkey: calloc"); 4522 4523 if (sscanf($1, "0x%8x%8x%8x%8x", 4524 &$$->key32[0], &$$->key32[1], 4525 &$$->key32[2], &$$->key32[3]) != 4) { 4526 free($$); 4527 free($1); 4528 yyerror("invalid hex key"); 4529 YYERROR; 4530 } 4531 } else { 4532 MD5_CTX context; 4533 4534 $$ = calloc(1, sizeof(struct pf_poolhashkey)); 4535 if ($$ == NULL) 4536 err(1, "hashkey: calloc"); 4537 MD5Init(&context); 4538 MD5Update(&context, (unsigned char *)$1, 4539 strlen($1)); 4540 MD5Final((unsigned char *)$$, &context); 4541 HTONL($$->key32[0]); 4542 HTONL($$->key32[1]); 4543 HTONL($$->key32[2]); 4544 HTONL($$->key32[3]); 4545 } 4546 free($1); 4547 } 4548 ; 4549 4550 pool_opts : { bzero(&pool_opts, sizeof pool_opts); } 4551 pool_opts_l 4552 { $$ = pool_opts; } 4553 | /* empty */ { 4554 bzero(&pool_opts, sizeof pool_opts); 4555 $$ = pool_opts; 4556 } 4557 ; 4558 4559 pool_opts_l : pool_opts_l pool_opt 4560 | pool_opt 4561 ; 4562 4563 pool_opt : BITMASK { 4564 if (pool_opts.type) { 4565 yyerror("pool type cannot be redefined"); 4566 YYERROR; 4567 } 4568 pool_opts.type = PF_POOL_BITMASK; 4569 } 4570 | RANDOM { 4571 if (pool_opts.type) { 4572 yyerror("pool type cannot be redefined"); 4573 YYERROR; 4574 } 4575 pool_opts.type = PF_POOL_RANDOM; 4576 } 4577 | SOURCEHASH hashkey { 4578 if (pool_opts.type) { 4579 yyerror("pool type cannot be redefined"); 4580 YYERROR; 4581 } 4582 pool_opts.type = PF_POOL_SRCHASH; 4583 pool_opts.key = $2; 4584 } 4585 | ROUNDROBIN { 4586 if (pool_opts.type) { 4587 yyerror("pool type cannot be redefined"); 4588 YYERROR; 4589 } 4590 pool_opts.type = PF_POOL_ROUNDROBIN; 4591 } 4592 | STATICPORT { 4593 if (pool_opts.staticport) { 4594 yyerror("static-port cannot be redefined"); 4595 YYERROR; 4596 } 4597 pool_opts.staticport = 1; 4598 } 4599 | STICKYADDRESS { 4600 if (pool_opts.marker & POM_STICKYADDRESS) { 4601 yyerror("sticky-address cannot be redefined"); 4602 YYERROR; 4603 } 4604 pool_opts.marker |= POM_STICKYADDRESS; 4605 pool_opts.opts |= PF_POOL_STICKYADDR; 4606 } 4607 | ENDPI { 4608 if (pool_opts.marker & POM_ENDPI) { 4609 yyerror("endpoint-independent cannot be redefined"); 4610 YYERROR; 4611 } 4612 pool_opts.marker |= POM_ENDPI; 4613 pool_opts.opts |= PF_POOL_ENDPI; 4614 } 4615 | MAPEPORTSET number '/' number '/' number { 4616 if (pool_opts.mape.offset) { 4617 yyerror("map-e-portset cannot be redefined"); 4618 YYERROR; 4619 } 4620 if (pool_opts.type) { 4621 yyerror("map-e-portset cannot be used with " 4622 "address pools"); 4623 YYERROR; 4624 } 4625 if ($2 <= 0 || $2 >= 16) { 4626 yyerror("MAP-E PSID offset must be 1-15"); 4627 YYERROR; 4628 } 4629 if ($4 < 0 || $4 >= 16 || $2 + $4 > 16) { 4630 yyerror("Invalid MAP-E PSID length"); 4631 YYERROR; 4632 } else if ($4 == 0) { 4633 yyerror("PSID Length = 0: this means" 4634 " you do not need MAP-E"); 4635 YYERROR; 4636 } 4637 if ($6 < 0 || $6 > 65535) { 4638 yyerror("Invalid MAP-E PSID"); 4639 YYERROR; 4640 } 4641 pool_opts.mape.offset = $2; 4642 pool_opts.mape.psidlen = $4; 4643 pool_opts.mape.psid = $6; 4644 } 4645 ; 4646 4647 redirection : /* empty */ { $$ = NULL; } 4648 | ARROW host { 4649 $$ = calloc(1, sizeof(struct redirection)); 4650 if ($$ == NULL) 4651 err(1, "redirection: calloc"); 4652 $$->host = $2; 4653 $$->rport.a = $$->rport.b = $$->rport.t = 0; 4654 } 4655 | ARROW host PORT portstar { 4656 $$ = calloc(1, sizeof(struct redirection)); 4657 if ($$ == NULL) 4658 err(1, "redirection: calloc"); 4659 $$->host = $2; 4660 $$->rport = $4; 4661 } 4662 ; 4663 4664 natpasslog : /* empty */ { $$.b1 = $$.b2 = 0; $$.w2 = 0; } 4665 | PASS { $$.b1 = 1; $$.b2 = 0; $$.w2 = 0; } 4666 | PASS log { $$.b1 = 1; $$.b2 = $2.log; $$.w2 = $2.logif; } 4667 | log { $$.b1 = 0; $$.b2 = $1.log; $$.w2 = $1.logif; } 4668 ; 4669 4670 nataction : no NAT natpasslog { 4671 if ($1 && $3.b1) { 4672 yyerror("\"pass\" not valid with \"no\""); 4673 YYERROR; 4674 } 4675 if ($1) 4676 $$.b1 = PF_NONAT; 4677 else 4678 $$.b1 = PF_NAT; 4679 $$.b2 = $3.b1; 4680 $$.w = $3.b2; 4681 $$.w2 = $3.w2; 4682 } 4683 | no RDR natpasslog { 4684 if ($1 && $3.b1) { 4685 yyerror("\"pass\" not valid with \"no\""); 4686 YYERROR; 4687 } 4688 if ($1) 4689 $$.b1 = PF_NORDR; 4690 else 4691 $$.b1 = PF_RDR; 4692 $$.b2 = $3.b1; 4693 $$.w = $3.b2; 4694 $$.w2 = $3.w2; 4695 } 4696 ; 4697 4698 natrule : nataction interface af proto fromto tag tagged rtable 4699 redirpool pool_opts 4700 { 4701 struct pfctl_rule r; 4702 struct node_state_opt *o; 4703 4704 if (check_rulestate(PFCTL_STATE_NAT)) 4705 YYERROR; 4706 4707 memset(&r, 0, sizeof(r)); 4708 4709 r.action = $1.b1; 4710 r.natpass = $1.b2; 4711 r.log = $1.w; 4712 r.logif = $1.w2; 4713 r.af = $3; 4714 4715 if (!r.af) { 4716 if ($5.src.host && $5.src.host->af && 4717 !$5.src.host->ifindex) 4718 r.af = $5.src.host->af; 4719 else if ($5.dst.host && $5.dst.host->af && 4720 !$5.dst.host->ifindex) 4721 r.af = $5.dst.host->af; 4722 } 4723 4724 if ($6 != NULL) 4725 if (strlcpy(r.tagname, $6, PF_TAG_NAME_SIZE) >= 4726 PF_TAG_NAME_SIZE) { 4727 yyerror("tag too long, max %u chars", 4728 PF_TAG_NAME_SIZE - 1); 4729 YYERROR; 4730 } 4731 4732 if ($7.name) 4733 if (strlcpy(r.match_tagname, $7.name, 4734 PF_TAG_NAME_SIZE) >= PF_TAG_NAME_SIZE) { 4735 yyerror("tag too long, max %u chars", 4736 PF_TAG_NAME_SIZE - 1); 4737 YYERROR; 4738 } 4739 r.match_tag_not = $7.neg; 4740 r.rtableid = $8; 4741 4742 if (r.action == PF_NONAT || r.action == PF_NORDR) { 4743 if ($9 != NULL) { 4744 yyerror("translation rule with 'no' " 4745 "does not need '->'"); 4746 YYERROR; 4747 } 4748 } else { 4749 if ($9 == NULL || $9->host == NULL) { 4750 yyerror("translation rule requires '-> " 4751 "address'"); 4752 YYERROR; 4753 } 4754 if (!r.af && ! $9->host->ifindex) 4755 r.af = $9->host->af; 4756 4757 remove_invalid_hosts(&$9->host, &r.af); 4758 if (invalid_redirect($9->host, r.af)) 4759 YYERROR; 4760 if ($9->host->addr.type == PF_ADDR_DYNIFTL) { 4761 if (($9->host = gen_dynnode($9->host, r.af)) == NULL) 4762 err(1, "calloc"); 4763 } 4764 if (check_netmask($9->host, r.af)) 4765 YYERROR; 4766 4767 r.rpool.proxy_port[0] = ntohs($9->rport.a); 4768 4769 switch (r.action) { 4770 case PF_RDR: 4771 if (!$9->rport.b && $9->rport.t && 4772 $5.dst.port != NULL) { 4773 r.rpool.proxy_port[1] = 4774 ntohs($9->rport.a) + 4775 (ntohs( 4776 $5.dst.port->port[1]) - 4777 ntohs( 4778 $5.dst.port->port[0])); 4779 } else 4780 r.rpool.proxy_port[1] = 4781 ntohs($9->rport.b); 4782 break; 4783 case PF_NAT: 4784 r.rpool.proxy_port[1] = 4785 ntohs($9->rport.b); 4786 if (!r.rpool.proxy_port[0] && 4787 !r.rpool.proxy_port[1]) { 4788 r.rpool.proxy_port[0] = 4789 PF_NAT_PROXY_PORT_LOW; 4790 r.rpool.proxy_port[1] = 4791 PF_NAT_PROXY_PORT_HIGH; 4792 } else if (!r.rpool.proxy_port[1]) 4793 r.rpool.proxy_port[1] = 4794 r.rpool.proxy_port[0]; 4795 break; 4796 default: 4797 break; 4798 } 4799 4800 r.rpool.opts = $10.type; 4801 if ((r.rpool.opts & PF_POOL_TYPEMASK) == 4802 PF_POOL_NONE && ($9->host->next != NULL || 4803 $9->host->addr.type == PF_ADDR_TABLE || 4804 DYNIF_MULTIADDR($9->host->addr))) 4805 r.rpool.opts = PF_POOL_ROUNDROBIN; 4806 if ((r.rpool.opts & PF_POOL_TYPEMASK) != 4807 PF_POOL_ROUNDROBIN && 4808 disallow_table($9->host, "tables are only " 4809 "supported in round-robin redirection " 4810 "pools")) 4811 YYERROR; 4812 if ((r.rpool.opts & PF_POOL_TYPEMASK) != 4813 PF_POOL_ROUNDROBIN && 4814 disallow_alias($9->host, "interface (%s) " 4815 "is only supported in round-robin " 4816 "redirection pools")) 4817 YYERROR; 4818 if ($9->host->next != NULL) { 4819 if ((r.rpool.opts & PF_POOL_TYPEMASK) != 4820 PF_POOL_ROUNDROBIN) { 4821 yyerror("only round-robin " 4822 "valid for multiple " 4823 "redirection addresses"); 4824 YYERROR; 4825 } 4826 } 4827 } 4828 4829 if ($10.key != NULL) 4830 memcpy(&r.rpool.key, $10.key, 4831 sizeof(struct pf_poolhashkey)); 4832 4833 if ($10.opts) 4834 r.rpool.opts |= $10.opts; 4835 4836 if ($10.staticport) { 4837 if (r.action != PF_NAT) { 4838 yyerror("the 'static-port' option is " 4839 "only valid with nat rules"); 4840 YYERROR; 4841 } 4842 if (r.rpool.proxy_port[0] != 4843 PF_NAT_PROXY_PORT_LOW && 4844 r.rpool.proxy_port[1] != 4845 PF_NAT_PROXY_PORT_HIGH) { 4846 yyerror("the 'static-port' option can't" 4847 " be used when specifying a port" 4848 " range"); 4849 YYERROR; 4850 } 4851 r.rpool.proxy_port[0] = 0; 4852 r.rpool.proxy_port[1] = 0; 4853 } 4854 4855 if ($10.mape.offset) { 4856 if (r.action != PF_NAT) { 4857 yyerror("the 'map-e-portset' option is" 4858 " only valid with nat rules"); 4859 YYERROR; 4860 } 4861 if ($10.staticport) { 4862 yyerror("the 'map-e-portset' option" 4863 " can't be used 'static-port'"); 4864 YYERROR; 4865 } 4866 if (r.rpool.proxy_port[0] != 4867 PF_NAT_PROXY_PORT_LOW && 4868 r.rpool.proxy_port[1] != 4869 PF_NAT_PROXY_PORT_HIGH) { 4870 yyerror("the 'map-e-portset' option" 4871 " can't be used when specifying" 4872 " a port range"); 4873 YYERROR; 4874 } 4875 r.rpool.mape = $10.mape; 4876 } 4877 4878 o = keep_state_defaults; 4879 while (o) { 4880 switch (o->type) { 4881 case PF_STATE_OPT_PFLOW: 4882 if (r.rule_flag & PFRULE_PFLOW) { 4883 yyerror("state pflow option: " 4884 "multiple definitions"); 4885 YYERROR; 4886 } 4887 r.rule_flag |= PFRULE_PFLOW; 4888 break; 4889 } 4890 o = o->next; 4891 } 4892 4893 expand_rule(&r, $2, $9 == NULL ? NULL : $9->host, $4, 4894 $5.src_os, $5.src.host, $5.src.port, $5.dst.host, 4895 $5.dst.port, 0, 0, 0, 0, ""); 4896 free($9); 4897 } 4898 ; 4899 4900 binatrule : no BINAT natpasslog interface af proto FROM ipspec toipspec tag 4901 tagged rtable redirection 4902 { 4903 struct pfctl_rule binat; 4904 struct pf_pooladdr *pa; 4905 4906 if (check_rulestate(PFCTL_STATE_NAT)) 4907 YYERROR; 4908 if (disallow_urpf_failed($9, "\"urpf-failed\" is not " 4909 "permitted as a binat destination")) 4910 YYERROR; 4911 4912 memset(&binat, 0, sizeof(binat)); 4913 4914 if ($1 && $3.b1) { 4915 yyerror("\"pass\" not valid with \"no\""); 4916 YYERROR; 4917 } 4918 if ($1) 4919 binat.action = PF_NOBINAT; 4920 else 4921 binat.action = PF_BINAT; 4922 binat.natpass = $3.b1; 4923 binat.log = $3.b2; 4924 binat.logif = $3.w2; 4925 binat.af = $5; 4926 if (!binat.af && $8 != NULL && $8->af) 4927 binat.af = $8->af; 4928 if (!binat.af && $9 != NULL && $9->af) 4929 binat.af = $9->af; 4930 4931 if (!binat.af && $13 != NULL && $13->host) 4932 binat.af = $13->host->af; 4933 if (!binat.af) { 4934 yyerror("address family (inet/inet6) " 4935 "undefined"); 4936 YYERROR; 4937 } 4938 4939 if ($4 != NULL) { 4940 memcpy(binat.ifname, $4->ifname, 4941 sizeof(binat.ifname)); 4942 binat.ifnot = $4->not; 4943 free($4); 4944 } 4945 4946 if ($10 != NULL) 4947 if (strlcpy(binat.tagname, $10, 4948 PF_TAG_NAME_SIZE) >= PF_TAG_NAME_SIZE) { 4949 yyerror("tag too long, max %u chars", 4950 PF_TAG_NAME_SIZE - 1); 4951 YYERROR; 4952 } 4953 if ($11.name) 4954 if (strlcpy(binat.match_tagname, $11.name, 4955 PF_TAG_NAME_SIZE) >= PF_TAG_NAME_SIZE) { 4956 yyerror("tag too long, max %u chars", 4957 PF_TAG_NAME_SIZE - 1); 4958 YYERROR; 4959 } 4960 binat.match_tag_not = $11.neg; 4961 binat.rtableid = $12; 4962 4963 if ($6 != NULL) { 4964 binat.proto = $6->proto; 4965 free($6); 4966 } 4967 4968 if ($8 != NULL && disallow_table($8, "invalid use of " 4969 "table <%s> as the source address of a binat rule")) 4970 YYERROR; 4971 if ($8 != NULL && disallow_alias($8, "invalid use of " 4972 "interface (%s) as the source address of a binat " 4973 "rule")) 4974 YYERROR; 4975 if ($13 != NULL && $13->host != NULL && disallow_table( 4976 $13->host, "invalid use of table <%s> as the " 4977 "redirect address of a binat rule")) 4978 YYERROR; 4979 if ($13 != NULL && $13->host != NULL && disallow_alias( 4980 $13->host, "invalid use of interface (%s) as the " 4981 "redirect address of a binat rule")) 4982 YYERROR; 4983 4984 if ($8 != NULL) { 4985 if ($8->next) { 4986 yyerror("multiple binat ip addresses"); 4987 YYERROR; 4988 } 4989 if ($8->addr.type == PF_ADDR_DYNIFTL) 4990 $8->af = binat.af; 4991 if ($8->af != binat.af) { 4992 yyerror("binat ip versions must match"); 4993 YYERROR; 4994 } 4995 if ($8->addr.type == PF_ADDR_DYNIFTL) { 4996 if (($8 = gen_dynnode($8, binat.af)) == NULL) 4997 err(1, "calloc"); 4998 } 4999 if (check_netmask($8, binat.af)) 5000 YYERROR; 5001 memcpy(&binat.src.addr, &$8->addr, 5002 sizeof(binat.src.addr)); 5003 free($8); 5004 } 5005 if ($9 != NULL) { 5006 if ($9->next) { 5007 yyerror("multiple binat ip addresses"); 5008 YYERROR; 5009 } 5010 if ($9->af != binat.af && $9->af) { 5011 yyerror("binat ip versions must match"); 5012 YYERROR; 5013 } 5014 if ($9->addr.type == PF_ADDR_DYNIFTL) { 5015 if (($9 = gen_dynnode($9, binat.af)) == NULL) 5016 err(1, "calloc"); 5017 } 5018 if (check_netmask($9, binat.af)) 5019 YYERROR; 5020 memcpy(&binat.dst.addr, &$9->addr, 5021 sizeof(binat.dst.addr)); 5022 binat.dst.neg = $9->not; 5023 free($9); 5024 } 5025 5026 if (binat.action == PF_NOBINAT) { 5027 if ($13 != NULL) { 5028 yyerror("'no binat' rule does not need" 5029 " '->'"); 5030 YYERROR; 5031 } 5032 } else { 5033 if ($13 == NULL || $13->host == NULL) { 5034 yyerror("'binat' rule requires" 5035 " '-> address'"); 5036 YYERROR; 5037 } 5038 5039 remove_invalid_hosts(&$13->host, &binat.af); 5040 if (invalid_redirect($13->host, binat.af)) 5041 YYERROR; 5042 if ($13->host->next != NULL) { 5043 yyerror("binat rule must redirect to " 5044 "a single address"); 5045 YYERROR; 5046 } 5047 if ($13->host->addr.type == PF_ADDR_DYNIFTL) { 5048 if (($13->host = gen_dynnode($13->host, binat.af)) == NULL) 5049 err(1, "calloc"); 5050 } 5051 if (check_netmask($13->host, binat.af)) 5052 YYERROR; 5053 5054 if (!PF_AZERO(&binat.src.addr.v.a.mask, 5055 binat.af) && 5056 !PF_AEQ(&binat.src.addr.v.a.mask, 5057 &$13->host->addr.v.a.mask, binat.af)) { 5058 yyerror("'binat' source mask and " 5059 "redirect mask must be the same"); 5060 YYERROR; 5061 } 5062 5063 TAILQ_INIT(&binat.rpool.list); 5064 pa = calloc(1, sizeof(struct pf_pooladdr)); 5065 if (pa == NULL) 5066 err(1, "binat: calloc"); 5067 pa->addr = $13->host->addr; 5068 pa->ifname[0] = 0; 5069 TAILQ_INSERT_TAIL(&binat.rpool.list, 5070 pa, entries); 5071 5072 free($13); 5073 } 5074 5075 pfctl_append_rule(pf, &binat, ""); 5076 } 5077 ; 5078 5079 tag : /* empty */ { $$ = NULL; } 5080 | TAG STRING { $$ = $2; } 5081 ; 5082 5083 tagged : /* empty */ { $$.neg = 0; $$.name = NULL; } 5084 | not TAGGED string { $$.neg = $1; $$.name = $3; } 5085 ; 5086 5087 rtable : /* empty */ { $$ = -1; } 5088 | RTABLE NUMBER { 5089 if ($2 < 0 || $2 > rt_tableid_max()) { 5090 yyerror("invalid rtable id"); 5091 YYERROR; 5092 } 5093 $$ = $2; 5094 } 5095 ; 5096 5097 route_host : STRING { 5098 $$ = calloc(1, sizeof(struct node_host)); 5099 if ($$ == NULL) 5100 err(1, "route_host: calloc"); 5101 if (strlen($1) >= IFNAMSIZ) { 5102 yyerror("interface name too long"); 5103 YYERROR; 5104 } 5105 $$->ifname = strdup($1); 5106 set_ipmask($$, 128); 5107 $$->next = NULL; 5108 $$->tail = $$; 5109 } 5110 | '(' STRING host ')' { 5111 struct node_host *n; 5112 5113 $$ = $3; 5114 for (n = $3; n != NULL; n = n->next) { 5115 if (strlen($2) >= IFNAMSIZ) { 5116 yyerror("interface name too long"); 5117 YYERROR; 5118 } 5119 n->ifname = strdup($2); 5120 } 5121 } 5122 ; 5123 5124 route_host_list : route_host optnl { $$ = $1; } 5125 | route_host_list comma route_host optnl { 5126 if ($1->af == 0) 5127 $1->af = $3->af; 5128 if ($1->af != $3->af) { 5129 yyerror("all pool addresses must be in the " 5130 "same address family"); 5131 YYERROR; 5132 } 5133 $1->tail->next = $3; 5134 $1->tail = $3->tail; 5135 $$ = $1; 5136 } 5137 ; 5138 5139 routespec : route_host { $$ = $1; } 5140 | '{' optnl route_host_list '}' { $$ = $3; } 5141 ; 5142 5143 route : /* empty */ { 5144 $$.host = NULL; 5145 $$.rt = 0; 5146 $$.pool_opts = 0; 5147 } 5148 | FASTROUTE { 5149 /* backwards-compat */ 5150 $$.host = NULL; 5151 $$.rt = 0; 5152 $$.pool_opts = 0; 5153 } 5154 | ROUTETO routespec pool_opts { 5155 $$.host = $2; 5156 $$.rt = PF_ROUTETO; 5157 $$.pool_opts = $3.type | $3.opts; 5158 if ($3.key != NULL) 5159 $$.key = $3.key; 5160 } 5161 | REPLYTO routespec pool_opts { 5162 $$.host = $2; 5163 $$.rt = PF_REPLYTO; 5164 $$.pool_opts = $3.type | $3.opts; 5165 if ($3.key != NULL) 5166 $$.key = $3.key; 5167 } 5168 | DUPTO routespec pool_opts { 5169 $$.host = $2; 5170 $$.rt = PF_DUPTO; 5171 $$.pool_opts = $3.type | $3.opts; 5172 if ($3.key != NULL) 5173 $$.key = $3.key; 5174 } 5175 ; 5176 5177 timeout_spec : STRING NUMBER 5178 { 5179 if (check_rulestate(PFCTL_STATE_OPTION)) { 5180 free($1); 5181 YYERROR; 5182 } 5183 if ($2 < 0 || $2 > UINT_MAX) { 5184 yyerror("only positive values permitted"); 5185 YYERROR; 5186 } 5187 if (pfctl_apply_timeout(pf, $1, $2, 0) != 0) { 5188 yyerror("unknown timeout %s", $1); 5189 free($1); 5190 YYERROR; 5191 } 5192 free($1); 5193 } 5194 | INTERVAL NUMBER { 5195 if (check_rulestate(PFCTL_STATE_OPTION)) 5196 YYERROR; 5197 if ($2 < 0 || $2 > UINT_MAX) { 5198 yyerror("only positive values permitted"); 5199 YYERROR; 5200 } 5201 if (pfctl_apply_timeout(pf, "interval", $2, 0) != 0) 5202 YYERROR; 5203 } 5204 ; 5205 5206 timeout_list : timeout_list comma timeout_spec optnl 5207 | timeout_spec optnl 5208 ; 5209 5210 limit_spec : STRING NUMBER 5211 { 5212 if (check_rulestate(PFCTL_STATE_OPTION)) { 5213 free($1); 5214 YYERROR; 5215 } 5216 if ($2 < 0 || $2 > UINT_MAX) { 5217 yyerror("only positive values permitted"); 5218 YYERROR; 5219 } 5220 if (pfctl_apply_limit(pf, $1, $2) != 0) { 5221 yyerror("unable to set limit %s %u", $1, $2); 5222 free($1); 5223 YYERROR; 5224 } 5225 free($1); 5226 } 5227 ; 5228 5229 limit_list : limit_list comma limit_spec optnl 5230 | limit_spec optnl 5231 ; 5232 5233 comma : ',' 5234 | /* empty */ 5235 ; 5236 5237 yesno : NO { $$ = 0; } 5238 | STRING { 5239 if (!strcmp($1, "yes")) 5240 $$ = 1; 5241 else { 5242 yyerror("invalid value '%s', expected 'yes' " 5243 "or 'no'", $1); 5244 free($1); 5245 YYERROR; 5246 } 5247 free($1); 5248 } 5249 ; 5250 5251 unaryop : '=' { $$ = PF_OP_EQ; } 5252 | NE { $$ = PF_OP_NE; } 5253 | LE { $$ = PF_OP_LE; } 5254 | '<' { $$ = PF_OP_LT; } 5255 | GE { $$ = PF_OP_GE; } 5256 | '>' { $$ = PF_OP_GT; } 5257 ; 5258 5259 %% 5260 5261 int 5262 yyerror(const char *fmt, ...) 5263 { 5264 va_list ap; 5265 5266 file->errors++; 5267 va_start(ap, fmt); 5268 fprintf(stderr, "%s:%d: ", file->name, yylval.lineno); 5269 vfprintf(stderr, fmt, ap); 5270 fprintf(stderr, "\n"); 5271 va_end(ap); 5272 return (0); 5273 } 5274 5275 int 5276 disallow_table(struct node_host *h, const char *fmt) 5277 { 5278 for (; h != NULL; h = h->next) 5279 if (h->addr.type == PF_ADDR_TABLE) { 5280 yyerror(fmt, h->addr.v.tblname); 5281 return (1); 5282 } 5283 return (0); 5284 } 5285 5286 int 5287 disallow_urpf_failed(struct node_host *h, const char *fmt) 5288 { 5289 for (; h != NULL; h = h->next) 5290 if (h->addr.type == PF_ADDR_URPFFAILED) { 5291 yyerror(fmt); 5292 return (1); 5293 } 5294 return (0); 5295 } 5296 5297 int 5298 disallow_alias(struct node_host *h, const char *fmt) 5299 { 5300 for (; h != NULL; h = h->next) 5301 if (DYNIF_MULTIADDR(h->addr)) { 5302 yyerror(fmt, h->addr.v.tblname); 5303 return (1); 5304 } 5305 return (0); 5306 } 5307 5308 int 5309 rule_consistent(struct pfctl_rule *r, int anchor_call) 5310 { 5311 int problems = 0; 5312 5313 switch (r->action) { 5314 case PF_PASS: 5315 case PF_MATCH: 5316 case PF_DROP: 5317 case PF_SCRUB: 5318 case PF_NOSCRUB: 5319 problems = filter_consistent(r, anchor_call); 5320 break; 5321 case PF_NAT: 5322 case PF_NONAT: 5323 problems = nat_consistent(r); 5324 break; 5325 case PF_RDR: 5326 case PF_NORDR: 5327 problems = rdr_consistent(r); 5328 break; 5329 case PF_BINAT: 5330 case PF_NOBINAT: 5331 default: 5332 break; 5333 } 5334 return (problems); 5335 } 5336 5337 int 5338 filter_consistent(struct pfctl_rule *r, int anchor_call) 5339 { 5340 int problems = 0; 5341 5342 if (r->proto != IPPROTO_TCP && r->proto != IPPROTO_UDP && 5343 r->proto != IPPROTO_SCTP && 5344 (r->src.port_op || r->dst.port_op)) { 5345 yyerror("port only applies to tcp/udp/sctp"); 5346 problems++; 5347 } 5348 if (r->proto != IPPROTO_ICMP && r->proto != IPPROTO_ICMPV6 && 5349 (r->type || r->code)) { 5350 yyerror("icmp-type/code only applies to icmp"); 5351 problems++; 5352 } 5353 if (!r->af && (r->type || r->code)) { 5354 yyerror("must indicate address family with icmp-type/code"); 5355 problems++; 5356 } 5357 if (r->overload_tblname[0] && 5358 r->max_src_conn == 0 && r->max_src_conn_rate.seconds == 0) { 5359 yyerror("'overload' requires 'max-src-conn' " 5360 "or 'max-src-conn-rate'"); 5361 problems++; 5362 } 5363 if ((r->proto == IPPROTO_ICMP && r->af == AF_INET6) || 5364 (r->proto == IPPROTO_ICMPV6 && r->af == AF_INET)) { 5365 yyerror("proto %s doesn't match address family %s", 5366 r->proto == IPPROTO_ICMP ? "icmp" : "icmp6", 5367 r->af == AF_INET ? "inet" : "inet6"); 5368 problems++; 5369 } 5370 if (r->allow_opts && r->action != PF_PASS) { 5371 yyerror("allow-opts can only be specified for pass rules"); 5372 problems++; 5373 } 5374 if (r->rule_flag & PFRULE_FRAGMENT && (r->src.port_op || 5375 r->dst.port_op || r->flagset || r->type || r->code)) { 5376 yyerror("fragments can be filtered only on IP header fields"); 5377 problems++; 5378 } 5379 if (r->rule_flag & PFRULE_RETURNRST && r->proto != IPPROTO_TCP) { 5380 yyerror("return-rst can only be applied to TCP rules"); 5381 problems++; 5382 } 5383 if (r->max_src_nodes && !(r->rule_flag & PFRULE_RULESRCTRACK)) { 5384 yyerror("max-src-nodes requires 'source-track rule'"); 5385 problems++; 5386 } 5387 if (r->action != PF_PASS && r->keep_state) { 5388 yyerror("keep state is great, but only for pass rules"); 5389 problems++; 5390 } 5391 if (r->rule_flag & PFRULE_STATESLOPPY && 5392 (r->keep_state == PF_STATE_MODULATE || 5393 r->keep_state == PF_STATE_SYNPROXY)) { 5394 yyerror("sloppy state matching cannot be used with " 5395 "synproxy state or modulate state"); 5396 problems++; 5397 } 5398 /* match rules rules */ 5399 if (r->action == PF_MATCH) { 5400 if (r->divert.port) { 5401 yyerror("divert is not supported on match rules"); 5402 problems++; 5403 } 5404 if (r->rt) { 5405 yyerror("route-to, reply-to, dup-to and fastroute " 5406 "must not be used on match rules"); 5407 problems++; 5408 } 5409 } 5410 if (r->rpool.opts & PF_POOL_STICKYADDR && !r->keep_state) { 5411 yyerror("'sticky-address' requires 'keep state'"); 5412 problems++; 5413 } 5414 return (-problems); 5415 } 5416 5417 int 5418 nat_consistent(struct pfctl_rule *r) 5419 { 5420 return (0); /* yeah! */ 5421 } 5422 5423 int 5424 rdr_consistent(struct pfctl_rule *r) 5425 { 5426 int problems = 0; 5427 5428 if (r->proto != IPPROTO_TCP && r->proto != IPPROTO_UDP && 5429 r->proto != IPPROTO_SCTP) { 5430 if (r->src.port_op) { 5431 yyerror("src port only applies to tcp/udp/sctp"); 5432 problems++; 5433 } 5434 if (r->dst.port_op) { 5435 yyerror("dst port only applies to tcp/udp/sctp"); 5436 problems++; 5437 } 5438 if (r->rpool.proxy_port[0]) { 5439 yyerror("rpool port only applies to tcp/udp/sctp"); 5440 problems++; 5441 } 5442 } 5443 if (r->dst.port_op && 5444 r->dst.port_op != PF_OP_EQ && r->dst.port_op != PF_OP_RRG) { 5445 yyerror("invalid port operator for rdr destination port"); 5446 problems++; 5447 } 5448 return (-problems); 5449 } 5450 5451 int 5452 process_tabledef(char *name, struct table_opts *opts) 5453 { 5454 struct pfr_buffer ab; 5455 struct node_tinit *ti; 5456 unsigned long maxcount; 5457 size_t s = sizeof(maxcount); 5458 5459 bzero(&ab, sizeof(ab)); 5460 ab.pfrb_type = PFRB_ADDRS; 5461 SIMPLEQ_FOREACH(ti, &opts->init_nodes, entries) { 5462 if (ti->file) 5463 if (pfr_buf_load(&ab, ti->file, 0, append_addr)) { 5464 if (errno) 5465 yyerror("cannot load \"%s\": %s", 5466 ti->file, strerror(errno)); 5467 else 5468 yyerror("file \"%s\" contains bad data", 5469 ti->file); 5470 goto _error; 5471 } 5472 if (ti->host) 5473 if (append_addr_host(&ab, ti->host, 0, 0)) { 5474 yyerror("cannot create address buffer: %s", 5475 strerror(errno)); 5476 goto _error; 5477 } 5478 } 5479 if (pf->opts & PF_OPT_VERBOSE) 5480 print_tabledef(name, opts->flags, opts->init_addr, 5481 &opts->init_nodes); 5482 if (!(pf->opts & PF_OPT_NOACTION) && 5483 pfctl_define_table(name, opts->flags, opts->init_addr, 5484 pf->anchor->name, &ab, pf->anchor->ruleset.tticket)) { 5485 5486 if (sysctlbyname("net.pf.request_maxcount", &maxcount, &s, 5487 NULL, 0) == -1) 5488 maxcount = 65535; 5489 5490 if (ab.pfrb_size > maxcount) 5491 yyerror("cannot define table %s: too many elements.\n" 5492 "Consider increasing net.pf.request_maxcount.", 5493 name); 5494 else 5495 yyerror("cannot define table %s: %s", name, 5496 pfr_strerror(errno)); 5497 5498 goto _error; 5499 } 5500 pf->tdirty = 1; 5501 pfr_buf_clear(&ab); 5502 return (0); 5503 _error: 5504 pfr_buf_clear(&ab); 5505 return (-1); 5506 } 5507 5508 struct keywords { 5509 const char *k_name; 5510 int k_val; 5511 }; 5512 5513 /* macro gore, but you should've seen the prior indentation nightmare... */ 5514 5515 #define FREE_LIST(T,r) \ 5516 do { \ 5517 T *p, *node = r; \ 5518 while (node != NULL) { \ 5519 p = node; \ 5520 node = node->next; \ 5521 free(p); \ 5522 } \ 5523 } while (0) 5524 5525 #define LOOP_THROUGH(T,n,r,C) \ 5526 do { \ 5527 T *n; \ 5528 if (r == NULL) { \ 5529 r = calloc(1, sizeof(T)); \ 5530 if (r == NULL) \ 5531 err(1, "LOOP: calloc"); \ 5532 r->next = NULL; \ 5533 } \ 5534 n = r; \ 5535 while (n != NULL) { \ 5536 do { \ 5537 C; \ 5538 } while (0); \ 5539 n = n->next; \ 5540 } \ 5541 } while (0) 5542 5543 void 5544 expand_label_str(char *label, size_t len, const char *srch, const char *repl) 5545 { 5546 char *tmp; 5547 char *p, *q; 5548 5549 if ((tmp = calloc(1, len)) == NULL) 5550 err(1, "expand_label_str: calloc"); 5551 p = q = label; 5552 while ((q = strstr(p, srch)) != NULL) { 5553 *q = '\0'; 5554 if ((strlcat(tmp, p, len) >= len) || 5555 (strlcat(tmp, repl, len) >= len)) 5556 errx(1, "expand_label: label too long"); 5557 q += strlen(srch); 5558 p = q; 5559 } 5560 if (strlcat(tmp, p, len) >= len) 5561 errx(1, "expand_label: label too long"); 5562 strlcpy(label, tmp, len); /* always fits */ 5563 free(tmp); 5564 } 5565 5566 void 5567 expand_label_if(const char *name, char *label, size_t len, const char *ifname) 5568 { 5569 if (strstr(label, name) != NULL) { 5570 if (!*ifname) 5571 expand_label_str(label, len, name, "any"); 5572 else 5573 expand_label_str(label, len, name, ifname); 5574 } 5575 } 5576 5577 void 5578 expand_label_addr(const char *name, char *label, size_t len, sa_family_t af, 5579 struct pf_rule_addr *addr) 5580 { 5581 char tmp[64], tmp_not[66]; 5582 5583 if (strstr(label, name) != NULL) { 5584 switch (addr->addr.type) { 5585 case PF_ADDR_DYNIFTL: 5586 snprintf(tmp, sizeof(tmp), "(%s)", addr->addr.v.ifname); 5587 break; 5588 case PF_ADDR_TABLE: 5589 snprintf(tmp, sizeof(tmp), "<%s>", addr->addr.v.tblname); 5590 break; 5591 case PF_ADDR_NOROUTE: 5592 snprintf(tmp, sizeof(tmp), "no-route"); 5593 break; 5594 case PF_ADDR_URPFFAILED: 5595 snprintf(tmp, sizeof(tmp), "urpf-failed"); 5596 break; 5597 case PF_ADDR_ADDRMASK: 5598 if (!af || (PF_AZERO(&addr->addr.v.a.addr, af) && 5599 PF_AZERO(&addr->addr.v.a.mask, af))) 5600 snprintf(tmp, sizeof(tmp), "any"); 5601 else { 5602 char a[48]; 5603 int bits; 5604 5605 if (inet_ntop(af, &addr->addr.v.a.addr, a, 5606 sizeof(a)) == NULL) 5607 snprintf(tmp, sizeof(tmp), "?"); 5608 else { 5609 bits = unmask(&addr->addr.v.a.mask, af); 5610 if ((af == AF_INET && bits < 32) || 5611 (af == AF_INET6 && bits < 128)) 5612 snprintf(tmp, sizeof(tmp), 5613 "%s/%d", a, bits); 5614 else 5615 snprintf(tmp, sizeof(tmp), 5616 "%s", a); 5617 } 5618 } 5619 break; 5620 default: 5621 snprintf(tmp, sizeof(tmp), "?"); 5622 break; 5623 } 5624 5625 if (addr->neg) { 5626 snprintf(tmp_not, sizeof(tmp_not), "! %s", tmp); 5627 expand_label_str(label, len, name, tmp_not); 5628 } else 5629 expand_label_str(label, len, name, tmp); 5630 } 5631 } 5632 5633 void 5634 expand_label_port(const char *name, char *label, size_t len, 5635 struct pf_rule_addr *addr) 5636 { 5637 char a1[6], a2[6], op[13] = ""; 5638 5639 if (strstr(label, name) != NULL) { 5640 snprintf(a1, sizeof(a1), "%u", ntohs(addr->port[0])); 5641 snprintf(a2, sizeof(a2), "%u", ntohs(addr->port[1])); 5642 if (!addr->port_op) 5643 ; 5644 else if (addr->port_op == PF_OP_IRG) 5645 snprintf(op, sizeof(op), "%s><%s", a1, a2); 5646 else if (addr->port_op == PF_OP_XRG) 5647 snprintf(op, sizeof(op), "%s<>%s", a1, a2); 5648 else if (addr->port_op == PF_OP_EQ) 5649 snprintf(op, sizeof(op), "%s", a1); 5650 else if (addr->port_op == PF_OP_NE) 5651 snprintf(op, sizeof(op), "!=%s", a1); 5652 else if (addr->port_op == PF_OP_LT) 5653 snprintf(op, sizeof(op), "<%s", a1); 5654 else if (addr->port_op == PF_OP_LE) 5655 snprintf(op, sizeof(op), "<=%s", a1); 5656 else if (addr->port_op == PF_OP_GT) 5657 snprintf(op, sizeof(op), ">%s", a1); 5658 else if (addr->port_op == PF_OP_GE) 5659 snprintf(op, sizeof(op), ">=%s", a1); 5660 expand_label_str(label, len, name, op); 5661 } 5662 } 5663 5664 void 5665 expand_label_proto(const char *name, char *label, size_t len, u_int8_t proto) 5666 { 5667 const char *protoname; 5668 char n[4]; 5669 5670 if (strstr(label, name) != NULL) { 5671 protoname = pfctl_proto2name(proto); 5672 if (protoname != NULL) 5673 expand_label_str(label, len, name, protoname); 5674 else { 5675 snprintf(n, sizeof(n), "%u", proto); 5676 expand_label_str(label, len, name, n); 5677 } 5678 } 5679 } 5680 5681 void 5682 expand_label_nr(const char *name, char *label, size_t len, 5683 struct pfctl_rule *r) 5684 { 5685 char n[11]; 5686 5687 if (strstr(label, name) != NULL) { 5688 snprintf(n, sizeof(n), "%u", r->nr); 5689 expand_label_str(label, len, name, n); 5690 } 5691 } 5692 5693 void 5694 expand_label(char *label, size_t len, struct pfctl_rule *r) 5695 { 5696 expand_label_if("$if", label, len, r->ifname); 5697 expand_label_addr("$srcaddr", label, len, r->af, &r->src); 5698 expand_label_addr("$dstaddr", label, len, r->af, &r->dst); 5699 expand_label_port("$srcport", label, len, &r->src); 5700 expand_label_port("$dstport", label, len, &r->dst); 5701 expand_label_proto("$proto", label, len, r->proto); 5702 expand_label_nr("$nr", label, len, r); 5703 } 5704 5705 int 5706 expand_altq(struct pf_altq *a, struct node_if *interfaces, 5707 struct node_queue *nqueues, struct node_queue_bw bwspec, 5708 struct node_queue_opt *opts) 5709 { 5710 struct pf_altq pa, pb; 5711 char qname[PF_QNAME_SIZE]; 5712 struct node_queue *n; 5713 struct node_queue_bw bw; 5714 int errs = 0; 5715 5716 if ((pf->loadopt & PFCTL_FLAG_ALTQ) == 0) { 5717 FREE_LIST(struct node_if, interfaces); 5718 if (nqueues) 5719 FREE_LIST(struct node_queue, nqueues); 5720 return (0); 5721 } 5722 5723 LOOP_THROUGH(struct node_if, interface, interfaces, 5724 memcpy(&pa, a, sizeof(struct pf_altq)); 5725 if (strlcpy(pa.ifname, interface->ifname, 5726 sizeof(pa.ifname)) >= sizeof(pa.ifname)) 5727 errx(1, "expand_altq: strlcpy"); 5728 5729 if (interface->not) { 5730 yyerror("altq on ! <interface> is not supported"); 5731 errs++; 5732 } else { 5733 if (eval_pfaltq(pf, &pa, &bwspec, opts)) 5734 errs++; 5735 else 5736 if (pfctl_add_altq(pf, &pa)) 5737 errs++; 5738 5739 if (pf->opts & PF_OPT_VERBOSE) { 5740 print_altq(&pf->paltq->altq, 0, 5741 &bwspec, opts); 5742 if (nqueues && nqueues->tail) { 5743 printf("queue { "); 5744 LOOP_THROUGH(struct node_queue, queue, 5745 nqueues, 5746 printf("%s ", 5747 queue->queue); 5748 ); 5749 printf("}"); 5750 } 5751 printf("\n"); 5752 } 5753 5754 if (pa.scheduler == ALTQT_CBQ || 5755 pa.scheduler == ALTQT_HFSC || 5756 pa.scheduler == ALTQT_FAIRQ) { 5757 /* now create a root queue */ 5758 memset(&pb, 0, sizeof(struct pf_altq)); 5759 if (strlcpy(qname, "root_", sizeof(qname)) >= 5760 sizeof(qname)) 5761 errx(1, "expand_altq: strlcpy"); 5762 if (strlcat(qname, interface->ifname, 5763 sizeof(qname)) >= sizeof(qname)) 5764 errx(1, "expand_altq: strlcat"); 5765 if (strlcpy(pb.qname, qname, 5766 sizeof(pb.qname)) >= sizeof(pb.qname)) 5767 errx(1, "expand_altq: strlcpy"); 5768 if (strlcpy(pb.ifname, interface->ifname, 5769 sizeof(pb.ifname)) >= sizeof(pb.ifname)) 5770 errx(1, "expand_altq: strlcpy"); 5771 pb.qlimit = pa.qlimit; 5772 pb.scheduler = pa.scheduler; 5773 bw.bw_absolute = pa.ifbandwidth; 5774 bw.bw_percent = 0; 5775 if (eval_pfqueue(pf, &pb, &bw, opts)) 5776 errs++; 5777 else 5778 if (pfctl_add_altq(pf, &pb)) 5779 errs++; 5780 } 5781 5782 LOOP_THROUGH(struct node_queue, queue, nqueues, 5783 n = calloc(1, sizeof(struct node_queue)); 5784 if (n == NULL) 5785 err(1, "expand_altq: calloc"); 5786 if (pa.scheduler == ALTQT_CBQ || 5787 pa.scheduler == ALTQT_HFSC || 5788 pa.scheduler == ALTQT_FAIRQ) 5789 if (strlcpy(n->parent, qname, 5790 sizeof(n->parent)) >= 5791 sizeof(n->parent)) 5792 errx(1, "expand_altq: strlcpy"); 5793 if (strlcpy(n->queue, queue->queue, 5794 sizeof(n->queue)) >= sizeof(n->queue)) 5795 errx(1, "expand_altq: strlcpy"); 5796 if (strlcpy(n->ifname, interface->ifname, 5797 sizeof(n->ifname)) >= sizeof(n->ifname)) 5798 errx(1, "expand_altq: strlcpy"); 5799 n->scheduler = pa.scheduler; 5800 n->next = NULL; 5801 n->tail = n; 5802 if (queues == NULL) 5803 queues = n; 5804 else { 5805 queues->tail->next = n; 5806 queues->tail = n; 5807 } 5808 ); 5809 } 5810 ); 5811 FREE_LIST(struct node_if, interfaces); 5812 if (nqueues) 5813 FREE_LIST(struct node_queue, nqueues); 5814 5815 return (errs); 5816 } 5817 5818 int 5819 expand_queue(struct pf_altq *a, struct node_if *interfaces, 5820 struct node_queue *nqueues, struct node_queue_bw bwspec, 5821 struct node_queue_opt *opts) 5822 { 5823 struct node_queue *n, *nq; 5824 struct pf_altq pa; 5825 u_int8_t found = 0; 5826 u_int8_t errs = 0; 5827 5828 if ((pf->loadopt & PFCTL_FLAG_ALTQ) == 0) { 5829 FREE_LIST(struct node_queue, nqueues); 5830 return (0); 5831 } 5832 5833 if (queues == NULL) { 5834 yyerror("queue %s has no parent", a->qname); 5835 FREE_LIST(struct node_queue, nqueues); 5836 return (1); 5837 } 5838 5839 LOOP_THROUGH(struct node_if, interface, interfaces, 5840 LOOP_THROUGH(struct node_queue, tqueue, queues, 5841 if (!strncmp(a->qname, tqueue->queue, PF_QNAME_SIZE) && 5842 (interface->ifname[0] == 0 || 5843 (!interface->not && !strncmp(interface->ifname, 5844 tqueue->ifname, IFNAMSIZ)) || 5845 (interface->not && strncmp(interface->ifname, 5846 tqueue->ifname, IFNAMSIZ)))) { 5847 /* found ourself in queues */ 5848 found++; 5849 5850 memcpy(&pa, a, sizeof(struct pf_altq)); 5851 5852 if (pa.scheduler != ALTQT_NONE && 5853 pa.scheduler != tqueue->scheduler) { 5854 yyerror("exactly one scheduler type " 5855 "per interface allowed"); 5856 return (1); 5857 } 5858 pa.scheduler = tqueue->scheduler; 5859 5860 /* scheduler dependent error checking */ 5861 switch (pa.scheduler) { 5862 case ALTQT_PRIQ: 5863 if (nqueues != NULL) { 5864 yyerror("priq queues cannot " 5865 "have child queues"); 5866 return (1); 5867 } 5868 if (bwspec.bw_absolute > 0 || 5869 bwspec.bw_percent < 100) { 5870 yyerror("priq doesn't take " 5871 "bandwidth"); 5872 return (1); 5873 } 5874 break; 5875 default: 5876 break; 5877 } 5878 5879 if (strlcpy(pa.ifname, tqueue->ifname, 5880 sizeof(pa.ifname)) >= sizeof(pa.ifname)) 5881 errx(1, "expand_queue: strlcpy"); 5882 if (strlcpy(pa.parent, tqueue->parent, 5883 sizeof(pa.parent)) >= sizeof(pa.parent)) 5884 errx(1, "expand_queue: strlcpy"); 5885 5886 if (eval_pfqueue(pf, &pa, &bwspec, opts)) 5887 errs++; 5888 else 5889 if (pfctl_add_altq(pf, &pa)) 5890 errs++; 5891 5892 for (nq = nqueues; nq != NULL; nq = nq->next) { 5893 if (!strcmp(a->qname, nq->queue)) { 5894 yyerror("queue cannot have " 5895 "itself as child"); 5896 errs++; 5897 continue; 5898 } 5899 n = calloc(1, 5900 sizeof(struct node_queue)); 5901 if (n == NULL) 5902 err(1, "expand_queue: calloc"); 5903 if (strlcpy(n->parent, a->qname, 5904 sizeof(n->parent)) >= 5905 sizeof(n->parent)) 5906 errx(1, "expand_queue strlcpy"); 5907 if (strlcpy(n->queue, nq->queue, 5908 sizeof(n->queue)) >= 5909 sizeof(n->queue)) 5910 errx(1, "expand_queue strlcpy"); 5911 if (strlcpy(n->ifname, tqueue->ifname, 5912 sizeof(n->ifname)) >= 5913 sizeof(n->ifname)) 5914 errx(1, "expand_queue strlcpy"); 5915 n->scheduler = tqueue->scheduler; 5916 n->next = NULL; 5917 n->tail = n; 5918 if (queues == NULL) 5919 queues = n; 5920 else { 5921 queues->tail->next = n; 5922 queues->tail = n; 5923 } 5924 } 5925 if ((pf->opts & PF_OPT_VERBOSE) && ( 5926 (found == 1 && interface->ifname[0] == 0) || 5927 (found > 0 && interface->ifname[0] != 0))) { 5928 print_queue(&pf->paltq->altq, 0, 5929 &bwspec, interface->ifname[0] != 0, 5930 opts); 5931 if (nqueues && nqueues->tail) { 5932 printf("{ "); 5933 LOOP_THROUGH(struct node_queue, 5934 queue, nqueues, 5935 printf("%s ", 5936 queue->queue); 5937 ); 5938 printf("}"); 5939 } 5940 printf("\n"); 5941 } 5942 } 5943 ); 5944 ); 5945 5946 FREE_LIST(struct node_queue, nqueues); 5947 FREE_LIST(struct node_if, interfaces); 5948 5949 if (!found) { 5950 yyerror("queue %s has no parent", a->qname); 5951 errs++; 5952 } 5953 5954 if (errs) 5955 return (1); 5956 else 5957 return (0); 5958 } 5959 5960 static int 5961 pf_af_to_proto(sa_family_t af) 5962 { 5963 if (af == AF_INET) 5964 return (ETHERTYPE_IP); 5965 if (af == AF_INET6) 5966 return (ETHERTYPE_IPV6); 5967 5968 return (0); 5969 } 5970 5971 void 5972 expand_eth_rule(struct pfctl_eth_rule *r, 5973 struct node_if *interfaces, struct node_etherproto *protos, 5974 struct node_mac *srcs, struct node_mac *dsts, 5975 struct node_host *ipsrcs, struct node_host *ipdsts, 5976 const char *bridge_to, const char *anchor_call) 5977 { 5978 char tagname[PF_TAG_NAME_SIZE]; 5979 char match_tagname[PF_TAG_NAME_SIZE]; 5980 char qname[PF_QNAME_SIZE]; 5981 5982 if (strlcpy(tagname, r->tagname, sizeof(tagname)) >= sizeof(tagname)) 5983 errx(1, "expand_eth_rule: tagname"); 5984 if (strlcpy(match_tagname, r->match_tagname, sizeof(match_tagname)) >= 5985 sizeof(match_tagname)) 5986 errx(1, "expand_eth_rule: match_tagname"); 5987 if (strlcpy(qname, r->qname, sizeof(qname)) >= sizeof(qname)) 5988 errx(1, "expand_eth_rule: qname"); 5989 5990 LOOP_THROUGH(struct node_if, interface, interfaces, 5991 LOOP_THROUGH(struct node_etherproto, proto, protos, 5992 LOOP_THROUGH(struct node_mac, src, srcs, 5993 LOOP_THROUGH(struct node_mac, dst, dsts, 5994 LOOP_THROUGH(struct node_host, ipsrc, ipsrcs, 5995 LOOP_THROUGH(struct node_host, ipdst, ipdsts, 5996 strlcpy(r->ifname, interface->ifname, 5997 sizeof(r->ifname)); 5998 r->ifnot = interface->not; 5999 r->proto = proto->proto; 6000 if (!r->proto && ipsrc->af) 6001 r->proto = pf_af_to_proto(ipsrc->af); 6002 else if (!r->proto && ipdst->af) 6003 r->proto = pf_af_to_proto(ipdst->af); 6004 bcopy(src->mac, r->src.addr, ETHER_ADDR_LEN); 6005 bcopy(src->mask, r->src.mask, ETHER_ADDR_LEN); 6006 r->src.neg = src->neg; 6007 r->src.isset = src->isset; 6008 r->ipsrc.addr = ipsrc->addr; 6009 r->ipsrc.neg = ipsrc->not; 6010 r->ipdst.addr = ipdst->addr; 6011 r->ipdst.neg = ipdst->not; 6012 bcopy(dst->mac, r->dst.addr, ETHER_ADDR_LEN); 6013 bcopy(dst->mask, r->dst.mask, ETHER_ADDR_LEN); 6014 r->dst.neg = dst->neg; 6015 r->dst.isset = dst->isset; 6016 r->nr = pf->eastack[pf->asd]->match++; 6017 6018 if (strlcpy(r->tagname, tagname, sizeof(r->tagname)) >= 6019 sizeof(r->tagname)) 6020 errx(1, "expand_eth_rule: r->tagname"); 6021 if (strlcpy(r->match_tagname, match_tagname, 6022 sizeof(r->match_tagname)) >= sizeof(r->match_tagname)) 6023 errx(1, "expand_eth_rule: r->match_tagname"); 6024 if (strlcpy(r->qname, qname, sizeof(r->qname)) >= sizeof(r->qname)) 6025 errx(1, "expand_eth_rule: r->qname"); 6026 6027 if (bridge_to) 6028 strlcpy(r->bridge_to, bridge_to, sizeof(r->bridge_to)); 6029 6030 pfctl_append_eth_rule(pf, r, anchor_call); 6031 )))))); 6032 6033 FREE_LIST(struct node_if, interfaces); 6034 FREE_LIST(struct node_etherproto, protos); 6035 FREE_LIST(struct node_mac, srcs); 6036 FREE_LIST(struct node_mac, dsts); 6037 FREE_LIST(struct node_host, ipsrcs); 6038 FREE_LIST(struct node_host, ipdsts); 6039 } 6040 6041 void 6042 expand_rule(struct pfctl_rule *r, 6043 struct node_if *interfaces, struct node_host *rpool_hosts, 6044 struct node_proto *protos, struct node_os *src_oses, 6045 struct node_host *src_hosts, struct node_port *src_ports, 6046 struct node_host *dst_hosts, struct node_port *dst_ports, 6047 struct node_uid *uids, struct node_gid *gids, struct node_if *rcv, 6048 struct node_icmp *icmp_types, const char *anchor_call) 6049 { 6050 sa_family_t af = r->af; 6051 int added = 0, error = 0; 6052 char ifname[IF_NAMESIZE]; 6053 char label[PF_RULE_MAX_LABEL_COUNT][PF_RULE_LABEL_SIZE]; 6054 char tagname[PF_TAG_NAME_SIZE]; 6055 char match_tagname[PF_TAG_NAME_SIZE]; 6056 struct pf_pooladdr *pa; 6057 struct node_host *h, *osrch, *odsth; 6058 u_int8_t flags, flagset, keep_state; 6059 6060 memcpy(label, r->label, sizeof(r->label)); 6061 assert(sizeof(r->label) == sizeof(label)); 6062 if (strlcpy(tagname, r->tagname, sizeof(tagname)) >= sizeof(tagname)) 6063 errx(1, "expand_rule: strlcpy"); 6064 if (strlcpy(match_tagname, r->match_tagname, sizeof(match_tagname)) >= 6065 sizeof(match_tagname)) 6066 errx(1, "expand_rule: strlcpy"); 6067 flags = r->flags; 6068 flagset = r->flagset; 6069 keep_state = r->keep_state; 6070 6071 LOOP_THROUGH(struct node_if, interface, interfaces, 6072 LOOP_THROUGH(struct node_proto, proto, protos, 6073 LOOP_THROUGH(struct node_icmp, icmp_type, icmp_types, 6074 LOOP_THROUGH(struct node_host, src_host, src_hosts, 6075 LOOP_THROUGH(struct node_port, src_port, src_ports, 6076 LOOP_THROUGH(struct node_os, src_os, src_oses, 6077 LOOP_THROUGH(struct node_host, dst_host, dst_hosts, 6078 LOOP_THROUGH(struct node_port, dst_port, dst_ports, 6079 LOOP_THROUGH(struct node_uid, uid, uids, 6080 LOOP_THROUGH(struct node_gid, gid, gids, 6081 6082 r->af = af; 6083 /* for link-local IPv6 address, interface must match up */ 6084 if ((r->af && src_host->af && r->af != src_host->af) || 6085 (r->af && dst_host->af && r->af != dst_host->af) || 6086 (src_host->af && dst_host->af && 6087 src_host->af != dst_host->af) || 6088 (src_host->ifindex && dst_host->ifindex && 6089 src_host->ifindex != dst_host->ifindex) || 6090 (src_host->ifindex && *interface->ifname && 6091 src_host->ifindex != if_nametoindex(interface->ifname)) || 6092 (dst_host->ifindex && *interface->ifname && 6093 dst_host->ifindex != if_nametoindex(interface->ifname))) 6094 continue; 6095 if (!r->af && src_host->af) 6096 r->af = src_host->af; 6097 else if (!r->af && dst_host->af) 6098 r->af = dst_host->af; 6099 6100 if (*interface->ifname) 6101 strlcpy(r->ifname, interface->ifname, 6102 sizeof(r->ifname)); 6103 else if (if_indextoname(src_host->ifindex, ifname)) 6104 strlcpy(r->ifname, ifname, sizeof(r->ifname)); 6105 else if (if_indextoname(dst_host->ifindex, ifname)) 6106 strlcpy(r->ifname, ifname, sizeof(r->ifname)); 6107 else 6108 memset(r->ifname, '\0', sizeof(r->ifname)); 6109 6110 memcpy(r->label, label, sizeof(r->label)); 6111 if (strlcpy(r->tagname, tagname, sizeof(r->tagname)) >= 6112 sizeof(r->tagname)) 6113 errx(1, "expand_rule: strlcpy"); 6114 if (strlcpy(r->match_tagname, match_tagname, 6115 sizeof(r->match_tagname)) >= sizeof(r->match_tagname)) 6116 errx(1, "expand_rule: strlcpy"); 6117 6118 osrch = odsth = NULL; 6119 if (src_host->addr.type == PF_ADDR_DYNIFTL) { 6120 osrch = src_host; 6121 if ((src_host = gen_dynnode(src_host, r->af)) == NULL) 6122 err(1, "expand_rule: calloc"); 6123 } 6124 if (dst_host->addr.type == PF_ADDR_DYNIFTL) { 6125 odsth = dst_host; 6126 if ((dst_host = gen_dynnode(dst_host, r->af)) == NULL) 6127 err(1, "expand_rule: calloc"); 6128 } 6129 6130 error += check_netmask(src_host, r->af); 6131 error += check_netmask(dst_host, r->af); 6132 6133 r->ifnot = interface->not; 6134 r->proto = proto->proto; 6135 r->src.addr = src_host->addr; 6136 r->src.neg = src_host->not; 6137 r->src.port[0] = src_port->port[0]; 6138 r->src.port[1] = src_port->port[1]; 6139 r->src.port_op = src_port->op; 6140 r->dst.addr = dst_host->addr; 6141 r->dst.neg = dst_host->not; 6142 r->dst.port[0] = dst_port->port[0]; 6143 r->dst.port[1] = dst_port->port[1]; 6144 r->dst.port_op = dst_port->op; 6145 r->uid.op = uid->op; 6146 r->uid.uid[0] = uid->uid[0]; 6147 r->uid.uid[1] = uid->uid[1]; 6148 r->gid.op = gid->op; 6149 r->gid.gid[0] = gid->gid[0]; 6150 r->gid.gid[1] = gid->gid[1]; 6151 if (rcv) { 6152 strlcpy(r->rcv_ifname, rcv->ifname, 6153 sizeof(r->rcv_ifname)); 6154 } 6155 r->type = icmp_type->type; 6156 r->code = icmp_type->code; 6157 6158 if ((keep_state == PF_STATE_MODULATE || 6159 keep_state == PF_STATE_SYNPROXY) && 6160 r->proto && r->proto != IPPROTO_TCP) 6161 r->keep_state = PF_STATE_NORMAL; 6162 else 6163 r->keep_state = keep_state; 6164 6165 if (r->proto && r->proto != IPPROTO_TCP) { 6166 r->flags = 0; 6167 r->flagset = 0; 6168 } else { 6169 r->flags = flags; 6170 r->flagset = flagset; 6171 } 6172 if (icmp_type->proto && r->proto != icmp_type->proto) { 6173 yyerror("icmp-type mismatch"); 6174 error++; 6175 } 6176 6177 if (src_os && src_os->os) { 6178 r->os_fingerprint = pfctl_get_fingerprint(src_os->os); 6179 if ((pf->opts & PF_OPT_VERBOSE2) && 6180 r->os_fingerprint == PF_OSFP_NOMATCH) 6181 fprintf(stderr, 6182 "warning: unknown '%s' OS fingerprint\n", 6183 src_os->os); 6184 } else { 6185 r->os_fingerprint = PF_OSFP_ANY; 6186 } 6187 6188 TAILQ_INIT(&r->rpool.list); 6189 for (h = rpool_hosts; h != NULL; h = h->next) { 6190 pa = calloc(1, sizeof(struct pf_pooladdr)); 6191 if (pa == NULL) 6192 err(1, "expand_rule: calloc"); 6193 pa->addr = h->addr; 6194 if (h->ifname != NULL) { 6195 if (strlcpy(pa->ifname, h->ifname, 6196 sizeof(pa->ifname)) >= 6197 sizeof(pa->ifname)) 6198 errx(1, "expand_rule: strlcpy"); 6199 } else 6200 pa->ifname[0] = 0; 6201 TAILQ_INSERT_TAIL(&r->rpool.list, pa, entries); 6202 } 6203 6204 if (rule_consistent(r, anchor_call[0]) < 0 || error) 6205 yyerror("skipping rule due to errors"); 6206 else { 6207 r->nr = pf->astack[pf->asd]->match++; 6208 pfctl_append_rule(pf, r, anchor_call); 6209 added++; 6210 } 6211 6212 if (osrch && src_host->addr.type == PF_ADDR_DYNIFTL) { 6213 free(src_host); 6214 src_host = osrch; 6215 } 6216 if (odsth && dst_host->addr.type == PF_ADDR_DYNIFTL) { 6217 free(dst_host); 6218 dst_host = odsth; 6219 } 6220 6221 )))))))))); 6222 6223 FREE_LIST(struct node_if, interfaces); 6224 FREE_LIST(struct node_proto, protos); 6225 FREE_LIST(struct node_host, src_hosts); 6226 FREE_LIST(struct node_port, src_ports); 6227 FREE_LIST(struct node_os, src_oses); 6228 FREE_LIST(struct node_host, dst_hosts); 6229 FREE_LIST(struct node_port, dst_ports); 6230 FREE_LIST(struct node_uid, uids); 6231 FREE_LIST(struct node_gid, gids); 6232 FREE_LIST(struct node_icmp, icmp_types); 6233 FREE_LIST(struct node_host, rpool_hosts); 6234 6235 if (!added) 6236 yyerror("rule expands to no valid combination"); 6237 } 6238 6239 int 6240 expand_skip_interface(struct node_if *interfaces) 6241 { 6242 int errs = 0; 6243 6244 if (!interfaces || (!interfaces->next && !interfaces->not && 6245 !strcmp(interfaces->ifname, "none"))) { 6246 if (pf->opts & PF_OPT_VERBOSE) 6247 printf("set skip on none\n"); 6248 errs = pfctl_set_interface_flags(pf, "", PFI_IFLAG_SKIP, 0); 6249 return (errs); 6250 } 6251 6252 if (pf->opts & PF_OPT_VERBOSE) 6253 printf("set skip on {"); 6254 LOOP_THROUGH(struct node_if, interface, interfaces, 6255 if (pf->opts & PF_OPT_VERBOSE) 6256 printf(" %s", interface->ifname); 6257 if (interface->not) { 6258 yyerror("skip on ! <interface> is not supported"); 6259 errs++; 6260 } else 6261 errs += pfctl_set_interface_flags(pf, 6262 interface->ifname, PFI_IFLAG_SKIP, 1); 6263 ); 6264 if (pf->opts & PF_OPT_VERBOSE) 6265 printf(" }\n"); 6266 6267 FREE_LIST(struct node_if, interfaces); 6268 6269 if (errs) 6270 return (1); 6271 else 6272 return (0); 6273 } 6274 6275 void 6276 freehostlist(struct node_host *h) 6277 { 6278 FREE_LIST(struct node_host, h); 6279 } 6280 6281 #undef FREE_LIST 6282 #undef LOOP_THROUGH 6283 6284 int 6285 check_rulestate(int desired_state) 6286 { 6287 if (require_order && (rulestate > desired_state)) { 6288 yyerror("Rules must be in order: options, ethernet, " 6289 "normalization, queueing, translation, filtering"); 6290 return (1); 6291 } 6292 rulestate = desired_state; 6293 return (0); 6294 } 6295 6296 int 6297 kw_cmp(const void *k, const void *e) 6298 { 6299 return (strcmp(k, ((const struct keywords *)e)->k_name)); 6300 } 6301 6302 int 6303 lookup(char *s) 6304 { 6305 /* this has to be sorted always */ 6306 static const struct keywords keywords[] = { 6307 { "all", ALL}, 6308 { "allow-opts", ALLOWOPTS}, 6309 { "altq", ALTQ}, 6310 { "anchor", ANCHOR}, 6311 { "antispoof", ANTISPOOF}, 6312 { "any", ANY}, 6313 { "bandwidth", BANDWIDTH}, 6314 { "binat", BINAT}, 6315 { "binat-anchor", BINATANCHOR}, 6316 { "bitmask", BITMASK}, 6317 { "block", BLOCK}, 6318 { "block-policy", BLOCKPOLICY}, 6319 { "bridge-to", BRIDGE_TO}, 6320 { "buckets", BUCKETS}, 6321 { "cbq", CBQ}, 6322 { "code", CODE}, 6323 { "codelq", CODEL}, 6324 { "debug", DEBUG}, 6325 { "divert-reply", DIVERTREPLY}, 6326 { "divert-to", DIVERTTO}, 6327 { "dnpipe", DNPIPE}, 6328 { "dnqueue", DNQUEUE}, 6329 { "drop", DROP}, 6330 { "dup-to", DUPTO}, 6331 { "endpoint-independent", ENDPI}, 6332 { "ether", ETHER}, 6333 { "fail-policy", FAILPOLICY}, 6334 { "fairq", FAIRQ}, 6335 { "fastroute", FASTROUTE}, 6336 { "file", FILENAME}, 6337 { "fingerprints", FINGERPRINTS}, 6338 { "flags", FLAGS}, 6339 { "floating", FLOATING}, 6340 { "flush", FLUSH}, 6341 { "for", FOR}, 6342 { "fragment", FRAGMENT}, 6343 { "from", FROM}, 6344 { "global", GLOBAL}, 6345 { "group", GROUP}, 6346 { "hfsc", HFSC}, 6347 { "hogs", HOGS}, 6348 { "hostid", HOSTID}, 6349 { "icmp-type", ICMPTYPE}, 6350 { "icmp6-type", ICMP6TYPE}, 6351 { "if-bound", IFBOUND}, 6352 { "in", IN}, 6353 { "include", INCLUDE}, 6354 { "inet", INET}, 6355 { "inet6", INET6}, 6356 { "interval", INTERVAL}, 6357 { "keep", KEEP}, 6358 { "keepcounters", KEEPCOUNTERS}, 6359 { "l3", L3}, 6360 { "label", LABEL}, 6361 { "limit", LIMIT}, 6362 { "linkshare", LINKSHARE}, 6363 { "load", LOAD}, 6364 { "log", LOG}, 6365 { "loginterface", LOGINTERFACE}, 6366 { "map-e-portset", MAPEPORTSET}, 6367 { "match", MATCH}, 6368 { "max", MAXIMUM}, 6369 { "max-mss", MAXMSS}, 6370 { "max-src-conn", MAXSRCCONN}, 6371 { "max-src-conn-rate", MAXSRCCONNRATE}, 6372 { "max-src-nodes", MAXSRCNODES}, 6373 { "max-src-states", MAXSRCSTATES}, 6374 { "min-ttl", MINTTL}, 6375 { "modulate", MODULATE}, 6376 { "nat", NAT}, 6377 { "nat-anchor", NATANCHOR}, 6378 { "no", NO}, 6379 { "no-df", NODF}, 6380 { "no-route", NOROUTE}, 6381 { "no-sync", NOSYNC}, 6382 { "on", ON}, 6383 { "optimization", OPTIMIZATION}, 6384 { "os", OS}, 6385 { "out", OUT}, 6386 { "overload", OVERLOAD}, 6387 { "pass", PASS}, 6388 { "pflow", PFLOW}, 6389 { "port", PORT}, 6390 { "prio", PRIO}, 6391 { "priority", PRIORITY}, 6392 { "priq", PRIQ}, 6393 { "probability", PROBABILITY}, 6394 { "proto", PROTO}, 6395 { "qlimit", QLIMIT}, 6396 { "queue", QUEUE}, 6397 { "quick", QUICK}, 6398 { "random", RANDOM}, 6399 { "random-id", RANDOMID}, 6400 { "rdr", RDR}, 6401 { "rdr-anchor", RDRANCHOR}, 6402 { "realtime", REALTIME}, 6403 { "reassemble", REASSEMBLE}, 6404 { "received-on", RECEIVEDON}, 6405 { "reply-to", REPLYTO}, 6406 { "require-order", REQUIREORDER}, 6407 { "return", RETURN}, 6408 { "return-icmp", RETURNICMP}, 6409 { "return-icmp6", RETURNICMP6}, 6410 { "return-rst", RETURNRST}, 6411 { "ridentifier", RIDENTIFIER}, 6412 { "round-robin", ROUNDROBIN}, 6413 { "route", ROUTE}, 6414 { "route-to", ROUTETO}, 6415 { "rtable", RTABLE}, 6416 { "rule", RULE}, 6417 { "ruleset-optimization", RULESET_OPTIMIZATION}, 6418 { "scrub", SCRUB}, 6419 { "set", SET}, 6420 { "set-tos", SETTOS}, 6421 { "skip", SKIP}, 6422 { "sloppy", SLOPPY}, 6423 { "source-hash", SOURCEHASH}, 6424 { "source-track", SOURCETRACK}, 6425 { "state", STATE}, 6426 { "state-defaults", STATEDEFAULTS}, 6427 { "state-policy", STATEPOLICY}, 6428 { "static-port", STATICPORT}, 6429 { "sticky-address", STICKYADDRESS}, 6430 { "syncookies", SYNCOOKIES}, 6431 { "synproxy", SYNPROXY}, 6432 { "table", TABLE}, 6433 { "tag", TAG}, 6434 { "tagged", TAGGED}, 6435 { "target", TARGET}, 6436 { "tbrsize", TBRSIZE}, 6437 { "timeout", TIMEOUT}, 6438 { "to", TO}, 6439 { "tos", TOS}, 6440 { "ttl", TTL}, 6441 { "upperlimit", UPPERLIMIT}, 6442 { "urpf-failed", URPFFAILED}, 6443 { "user", USER}, 6444 }; 6445 const struct keywords *p; 6446 6447 p = bsearch(s, keywords, sizeof(keywords)/sizeof(keywords[0]), 6448 sizeof(keywords[0]), kw_cmp); 6449 6450 if (p) { 6451 if (debug > 1) 6452 fprintf(stderr, "%s: %d\n", s, p->k_val); 6453 return (p->k_val); 6454 } else { 6455 if (debug > 1) 6456 fprintf(stderr, "string: %s\n", s); 6457 return (STRING); 6458 } 6459 } 6460 6461 #define MAXPUSHBACK 128 6462 6463 static char *parsebuf; 6464 static int parseindex; 6465 static char pushback_buffer[MAXPUSHBACK]; 6466 static int pushback_index = 0; 6467 6468 int 6469 lgetc(int quotec) 6470 { 6471 int c, next; 6472 6473 if (parsebuf) { 6474 /* Read character from the parsebuffer instead of input. */ 6475 if (parseindex >= 0) { 6476 c = parsebuf[parseindex++]; 6477 if (c != '\0') 6478 return (c); 6479 parsebuf = NULL; 6480 } else 6481 parseindex++; 6482 } 6483 6484 if (pushback_index) 6485 return (pushback_buffer[--pushback_index]); 6486 6487 if (quotec) { 6488 if ((c = getc(file->stream)) == EOF) { 6489 yyerror("reached end of file while parsing quoted string"); 6490 if (popfile() == EOF) 6491 return (EOF); 6492 return (quotec); 6493 } 6494 return (c); 6495 } 6496 6497 while ((c = getc(file->stream)) == '\\') { 6498 next = getc(file->stream); 6499 if (next != '\n') { 6500 c = next; 6501 break; 6502 } 6503 yylval.lineno = file->lineno; 6504 file->lineno++; 6505 } 6506 6507 while (c == EOF) { 6508 if (popfile() == EOF) 6509 return (EOF); 6510 c = getc(file->stream); 6511 } 6512 return (c); 6513 } 6514 6515 int 6516 lungetc(int c) 6517 { 6518 if (c == EOF) 6519 return (EOF); 6520 if (parsebuf) { 6521 parseindex--; 6522 if (parseindex >= 0) 6523 return (c); 6524 } 6525 if (pushback_index < MAXPUSHBACK-1) 6526 return (pushback_buffer[pushback_index++] = c); 6527 else 6528 return (EOF); 6529 } 6530 6531 int 6532 findeol(void) 6533 { 6534 int c; 6535 6536 parsebuf = NULL; 6537 6538 /* skip to either EOF or the first real EOL */ 6539 while (1) { 6540 if (pushback_index) 6541 c = pushback_buffer[--pushback_index]; 6542 else 6543 c = lgetc(0); 6544 if (c == '\n') { 6545 file->lineno++; 6546 break; 6547 } 6548 if (c == EOF) 6549 break; 6550 } 6551 return (ERROR); 6552 } 6553 6554 int 6555 yylex(void) 6556 { 6557 char buf[8096]; 6558 char *p, *val; 6559 int quotec, next, c; 6560 int token; 6561 6562 top: 6563 p = buf; 6564 while ((c = lgetc(0)) == ' ' || c == '\t') 6565 ; /* nothing */ 6566 6567 yylval.lineno = file->lineno; 6568 if (c == '#') 6569 while ((c = lgetc(0)) != '\n' && c != EOF) 6570 ; /* nothing */ 6571 if (c == '$' && parsebuf == NULL) { 6572 while (1) { 6573 if ((c = lgetc(0)) == EOF) 6574 return (0); 6575 6576 if (p + 1 >= buf + sizeof(buf) - 1) { 6577 yyerror("string too long"); 6578 return (findeol()); 6579 } 6580 if (isalnum(c) || c == '_') { 6581 *p++ = (char)c; 6582 continue; 6583 } 6584 *p = '\0'; 6585 lungetc(c); 6586 break; 6587 } 6588 val = symget(buf); 6589 if (val == NULL) { 6590 yyerror("macro '%s' not defined", buf); 6591 return (findeol()); 6592 } 6593 parsebuf = val; 6594 parseindex = 0; 6595 goto top; 6596 } 6597 6598 switch (c) { 6599 case '\'': 6600 case '"': 6601 quotec = c; 6602 while (1) { 6603 if ((c = lgetc(quotec)) == EOF) 6604 return (0); 6605 if (c == '\n') { 6606 file->lineno++; 6607 continue; 6608 } else if (c == '\\') { 6609 if ((next = lgetc(quotec)) == EOF) 6610 return (0); 6611 if (next == quotec || c == ' ' || c == '\t') 6612 c = next; 6613 else if (next == '\n') { 6614 file->lineno++; 6615 continue; 6616 } 6617 else 6618 lungetc(next); 6619 } else if (c == quotec) { 6620 *p = '\0'; 6621 break; 6622 } 6623 if (p + 1 >= buf + sizeof(buf) - 1) { 6624 yyerror("string too long"); 6625 return (findeol()); 6626 } 6627 *p++ = (char)c; 6628 } 6629 yylval.v.string = strdup(buf); 6630 if (yylval.v.string == NULL) 6631 err(1, "yylex: strdup"); 6632 return (STRING); 6633 case '!': 6634 next = lgetc(0); 6635 if (next == '=') 6636 return (NE); 6637 lungetc(next); 6638 break; 6639 case '<': 6640 next = lgetc(0); 6641 if (next == '>') { 6642 yylval.v.i = PF_OP_XRG; 6643 return (PORTBINARY); 6644 } else if (next == '=') 6645 return (LE); 6646 lungetc(next); 6647 break; 6648 case '>': 6649 next = lgetc(0); 6650 if (next == '<') { 6651 yylval.v.i = PF_OP_IRG; 6652 return (PORTBINARY); 6653 } else if (next == '=') 6654 return (GE); 6655 lungetc(next); 6656 break; 6657 case '-': 6658 next = lgetc(0); 6659 if (next == '>') 6660 return (ARROW); 6661 lungetc(next); 6662 break; 6663 } 6664 6665 #define allowed_to_end_number(x) \ 6666 (isspace(x) || x == ')' || x ==',' || x == '/' || x == '}' || x == '=') 6667 6668 if (c == '-' || isdigit(c)) { 6669 do { 6670 *p++ = c; 6671 if ((unsigned)(p-buf) >= sizeof(buf)) { 6672 yyerror("string too long"); 6673 return (findeol()); 6674 } 6675 } while ((c = lgetc(0)) != EOF && isdigit(c)); 6676 lungetc(c); 6677 if (p == buf + 1 && buf[0] == '-') 6678 goto nodigits; 6679 if (c == EOF || allowed_to_end_number(c)) { 6680 const char *errstr = NULL; 6681 6682 *p = '\0'; 6683 yylval.v.number = strtonum(buf, LLONG_MIN, 6684 LLONG_MAX, &errstr); 6685 if (errstr) { 6686 yyerror("\"%s\" invalid number: %s", 6687 buf, errstr); 6688 return (findeol()); 6689 } 6690 return (NUMBER); 6691 } else { 6692 nodigits: 6693 while (p > buf + 1) 6694 lungetc(*--p); 6695 c = *--p; 6696 if (c == '-') 6697 return (c); 6698 } 6699 } 6700 6701 #define allowed_in_string(x) \ 6702 (isalnum(x) || (ispunct(x) && x != '(' && x != ')' && \ 6703 x != '{' && x != '}' && x != '<' && x != '>' && \ 6704 x != '!' && x != '=' && x != '/' && x != '#' && \ 6705 x != ',')) 6706 6707 if (isalnum(c) || c == ':' || c == '_') { 6708 do { 6709 *p++ = c; 6710 if ((unsigned)(p-buf) >= sizeof(buf)) { 6711 yyerror("string too long"); 6712 return (findeol()); 6713 } 6714 } while ((c = lgetc(0)) != EOF && (allowed_in_string(c))); 6715 lungetc(c); 6716 *p = '\0'; 6717 if ((token = lookup(buf)) == STRING) 6718 if ((yylval.v.string = strdup(buf)) == NULL) 6719 err(1, "yylex: strdup"); 6720 return (token); 6721 } 6722 if (c == '\n') { 6723 yylval.lineno = file->lineno; 6724 file->lineno++; 6725 } 6726 if (c == EOF) 6727 return (0); 6728 return (c); 6729 } 6730 6731 int 6732 check_file_secrecy(int fd, const char *fname) 6733 { 6734 struct stat st; 6735 6736 if (fstat(fd, &st)) { 6737 warn("cannot stat %s", fname); 6738 return (-1); 6739 } 6740 if (st.st_uid != 0 && st.st_uid != getuid()) { 6741 warnx("%s: owner not root or current user", fname); 6742 return (-1); 6743 } 6744 if (st.st_mode & (S_IRWXG | S_IRWXO)) { 6745 warnx("%s: group/world readable/writeable", fname); 6746 return (-1); 6747 } 6748 return (0); 6749 } 6750 6751 struct file * 6752 pushfile(const char *name, int secret) 6753 { 6754 struct file *nfile; 6755 6756 if ((nfile = calloc(1, sizeof(struct file))) == NULL || 6757 (nfile->name = strdup(name)) == NULL) { 6758 warn("malloc"); 6759 return (NULL); 6760 } 6761 if (TAILQ_FIRST(&files) == NULL && strcmp(nfile->name, "-") == 0) { 6762 nfile->stream = stdin; 6763 free(nfile->name); 6764 if ((nfile->name = strdup("stdin")) == NULL) { 6765 warn("strdup"); 6766 free(nfile); 6767 return (NULL); 6768 } 6769 } else if ((nfile->stream = fopen(nfile->name, "r")) == NULL) { 6770 warn("%s", nfile->name); 6771 free(nfile->name); 6772 free(nfile); 6773 return (NULL); 6774 } else if (secret && 6775 check_file_secrecy(fileno(nfile->stream), nfile->name)) { 6776 fclose(nfile->stream); 6777 free(nfile->name); 6778 free(nfile); 6779 return (NULL); 6780 } 6781 nfile->lineno = 1; 6782 TAILQ_INSERT_TAIL(&files, nfile, entry); 6783 return (nfile); 6784 } 6785 6786 int 6787 popfile(void) 6788 { 6789 struct file *prev; 6790 6791 if ((prev = TAILQ_PREV(file, files, entry)) != NULL) { 6792 prev->errors += file->errors; 6793 TAILQ_REMOVE(&files, file, entry); 6794 fclose(file->stream); 6795 free(file->name); 6796 free(file); 6797 file = prev; 6798 return (0); 6799 } 6800 return (EOF); 6801 } 6802 6803 int 6804 parse_config(char *filename, struct pfctl *xpf) 6805 { 6806 int errors = 0; 6807 struct sym *sym; 6808 6809 pf = xpf; 6810 errors = 0; 6811 rulestate = PFCTL_STATE_NONE; 6812 returnicmpdefault = (ICMP_UNREACH << 8) | ICMP_UNREACH_PORT; 6813 returnicmp6default = 6814 (ICMP6_DST_UNREACH << 8) | ICMP6_DST_UNREACH_NOPORT; 6815 blockpolicy = PFRULE_DROP; 6816 failpolicy = PFRULE_DROP; 6817 require_order = 1; 6818 6819 if ((file = pushfile(filename, 0)) == NULL) { 6820 warn("cannot open the main config file!"); 6821 return (-1); 6822 } 6823 6824 yyparse(); 6825 errors = file->errors; 6826 popfile(); 6827 6828 /* Free macros and check which have not been used. */ 6829 while ((sym = TAILQ_FIRST(&symhead))) { 6830 if ((pf->opts & PF_OPT_VERBOSE2) && !sym->used) 6831 fprintf(stderr, "warning: macro '%s' not " 6832 "used\n", sym->nam); 6833 free(sym->nam); 6834 free(sym->val); 6835 TAILQ_REMOVE(&symhead, sym, entry); 6836 free(sym); 6837 } 6838 6839 return (errors ? -1 : 0); 6840 } 6841 6842 int 6843 symset(const char *nam, const char *val, int persist) 6844 { 6845 struct sym *sym; 6846 6847 for (sym = TAILQ_FIRST(&symhead); sym && strcmp(nam, sym->nam); 6848 sym = TAILQ_NEXT(sym, entry)) 6849 ; /* nothing */ 6850 6851 if (sym != NULL) { 6852 if (sym->persist == 1) 6853 return (0); 6854 else { 6855 free(sym->nam); 6856 free(sym->val); 6857 TAILQ_REMOVE(&symhead, sym, entry); 6858 free(sym); 6859 } 6860 } 6861 if ((sym = calloc(1, sizeof(*sym))) == NULL) 6862 return (-1); 6863 6864 sym->nam = strdup(nam); 6865 if (sym->nam == NULL) { 6866 free(sym); 6867 return (-1); 6868 } 6869 sym->val = strdup(val); 6870 if (sym->val == NULL) { 6871 free(sym->nam); 6872 free(sym); 6873 return (-1); 6874 } 6875 sym->used = 0; 6876 sym->persist = persist; 6877 TAILQ_INSERT_TAIL(&symhead, sym, entry); 6878 return (0); 6879 } 6880 6881 int 6882 pfctl_cmdline_symset(char *s) 6883 { 6884 char *sym, *val; 6885 int ret; 6886 6887 if ((val = strrchr(s, '=')) == NULL) 6888 return (-1); 6889 6890 if ((sym = malloc(strlen(s) - strlen(val) + 1)) == NULL) 6891 err(1, "pfctl_cmdline_symset: malloc"); 6892 6893 strlcpy(sym, s, strlen(s) - strlen(val) + 1); 6894 6895 ret = symset(sym, val + 1, 1); 6896 free(sym); 6897 6898 return (ret); 6899 } 6900 6901 char * 6902 symget(const char *nam) 6903 { 6904 struct sym *sym; 6905 6906 TAILQ_FOREACH(sym, &symhead, entry) 6907 if (strcmp(nam, sym->nam) == 0) { 6908 sym->used = 1; 6909 return (sym->val); 6910 } 6911 return (NULL); 6912 } 6913 6914 void 6915 mv_rules(struct pfctl_ruleset *src, struct pfctl_ruleset *dst) 6916 { 6917 int i; 6918 struct pfctl_rule *r; 6919 6920 for (i = 0; i < PF_RULESET_MAX; ++i) { 6921 while ((r = TAILQ_FIRST(src->rules[i].active.ptr)) 6922 != NULL) { 6923 TAILQ_REMOVE(src->rules[i].active.ptr, r, entries); 6924 TAILQ_INSERT_TAIL(dst->rules[i].active.ptr, r, entries); 6925 dst->anchor->match++; 6926 } 6927 src->anchor->match = 0; 6928 while ((r = TAILQ_FIRST(src->rules[i].inactive.ptr)) 6929 != NULL) { 6930 TAILQ_REMOVE(src->rules[i].inactive.ptr, r, entries); 6931 TAILQ_INSERT_TAIL(dst->rules[i].inactive.ptr, 6932 r, entries); 6933 } 6934 } 6935 } 6936 6937 void 6938 mv_eth_rules(struct pfctl_eth_ruleset *src, struct pfctl_eth_ruleset *dst) 6939 { 6940 struct pfctl_eth_rule *r; 6941 6942 while ((r = TAILQ_FIRST(&src->rules)) != NULL) { 6943 TAILQ_REMOVE(&src->rules, r, entries); 6944 TAILQ_INSERT_TAIL(&dst->rules, r, entries); 6945 dst->anchor->match++; 6946 } 6947 src->anchor->match = 0; 6948 } 6949 6950 void 6951 decide_address_family(struct node_host *n, sa_family_t *af) 6952 { 6953 if (*af != 0 || n == NULL) 6954 return; 6955 *af = n->af; 6956 while ((n = n->next) != NULL) { 6957 if (n->af != *af) { 6958 *af = 0; 6959 return; 6960 } 6961 } 6962 } 6963 6964 void 6965 remove_invalid_hosts(struct node_host **nh, sa_family_t *af) 6966 { 6967 struct node_host *n = *nh, *prev = NULL; 6968 6969 while (n != NULL) { 6970 if (*af && n->af && n->af != *af) { 6971 /* unlink and free n */ 6972 struct node_host *next = n->next; 6973 6974 /* adjust tail pointer */ 6975 if (n == (*nh)->tail) 6976 (*nh)->tail = prev; 6977 /* adjust previous node's next pointer */ 6978 if (prev == NULL) 6979 *nh = next; 6980 else 6981 prev->next = next; 6982 /* free node */ 6983 if (n->ifname != NULL) 6984 free(n->ifname); 6985 free(n); 6986 n = next; 6987 } else { 6988 if (n->af && !*af) 6989 *af = n->af; 6990 prev = n; 6991 n = n->next; 6992 } 6993 } 6994 } 6995 6996 int 6997 invalid_redirect(struct node_host *nh, sa_family_t af) 6998 { 6999 if (!af) { 7000 struct node_host *n; 7001 7002 /* tables and dyniftl are ok without an address family */ 7003 for (n = nh; n != NULL; n = n->next) { 7004 if (n->addr.type != PF_ADDR_TABLE && 7005 n->addr.type != PF_ADDR_DYNIFTL) { 7006 yyerror("address family not given and " 7007 "translation address expands to multiple " 7008 "address families"); 7009 return (1); 7010 } 7011 } 7012 } 7013 if (nh == NULL) { 7014 yyerror("no translation address with matching address family " 7015 "found."); 7016 return (1); 7017 } 7018 return (0); 7019 } 7020 7021 int 7022 atoul(char *s, u_long *ulvalp) 7023 { 7024 u_long ulval; 7025 char *ep; 7026 7027 errno = 0; 7028 ulval = strtoul(s, &ep, 0); 7029 if (s[0] == '\0' || *ep != '\0') 7030 return (-1); 7031 if (errno == ERANGE && ulval == ULONG_MAX) 7032 return (-1); 7033 *ulvalp = ulval; 7034 return (0); 7035 } 7036 7037 int 7038 getservice(char *n) 7039 { 7040 struct servent *s; 7041 u_long ulval; 7042 7043 if (atoul(n, &ulval) == 0) { 7044 if (ulval > 65535) { 7045 yyerror("illegal port value %lu", ulval); 7046 return (-1); 7047 } 7048 return (htons(ulval)); 7049 } else { 7050 s = getservbyname(n, "tcp"); 7051 if (s == NULL) 7052 s = getservbyname(n, "udp"); 7053 if (s == NULL) 7054 s = getservbyname(n, "sctp"); 7055 if (s == NULL) { 7056 yyerror("unknown port %s", n); 7057 return (-1); 7058 } 7059 return (s->s_port); 7060 } 7061 } 7062 7063 int 7064 rule_label(struct pfctl_rule *r, char *s[PF_RULE_MAX_LABEL_COUNT]) 7065 { 7066 for (int i = 0; i < PF_RULE_MAX_LABEL_COUNT; i++) { 7067 if (s[i] == NULL) 7068 return (0); 7069 7070 if (strlcpy(r->label[i], s[i], sizeof(r->label[0])) >= 7071 sizeof(r->label[0])) { 7072 yyerror("rule label too long (max %d chars)", 7073 sizeof(r->label[0])-1); 7074 return (-1); 7075 } 7076 } 7077 return (0); 7078 } 7079 7080 int 7081 eth_rule_label(struct pfctl_eth_rule *r, char *s[PF_RULE_MAX_LABEL_COUNT]) 7082 { 7083 for (int i = 0; i < PF_RULE_MAX_LABEL_COUNT; i++) { 7084 if (s[i] == NULL) 7085 return (0); 7086 7087 if (strlcpy(r->label[i], s[i], sizeof(r->label[0])) >= 7088 sizeof(r->label[0])) { 7089 yyerror("rule label too long (max %d chars)", 7090 sizeof(r->label[0])-1); 7091 return (-1); 7092 } 7093 } 7094 return (0); 7095 } 7096 7097 u_int16_t 7098 parseicmpspec(char *w, sa_family_t af) 7099 { 7100 const struct icmpcodeent *p; 7101 u_long ulval; 7102 u_int8_t icmptype; 7103 7104 if (af == AF_INET) 7105 icmptype = returnicmpdefault >> 8; 7106 else 7107 icmptype = returnicmp6default >> 8; 7108 7109 if (atoul(w, &ulval) == -1) { 7110 if ((p = geticmpcodebyname(icmptype, w, af)) == NULL) { 7111 yyerror("unknown icmp code %s", w); 7112 return (0); 7113 } 7114 ulval = p->code; 7115 } 7116 if (ulval > 255) { 7117 yyerror("invalid icmp code %lu", ulval); 7118 return (0); 7119 } 7120 return (icmptype << 8 | ulval); 7121 } 7122 7123 int 7124 parseport(char *port, struct range *r, int extensions) 7125 { 7126 char *p = strchr(port, ':'); 7127 7128 if (p == NULL) { 7129 if ((r->a = getservice(port)) == -1) 7130 return (-1); 7131 r->b = 0; 7132 r->t = PF_OP_NONE; 7133 return (0); 7134 } 7135 if ((extensions & PPORT_STAR) && !strcmp(p+1, "*")) { 7136 *p = 0; 7137 if ((r->a = getservice(port)) == -1) 7138 return (-1); 7139 r->b = 0; 7140 r->t = PF_OP_IRG; 7141 return (0); 7142 } 7143 if ((extensions & PPORT_RANGE)) { 7144 *p++ = 0; 7145 if ((r->a = getservice(port)) == -1 || 7146 (r->b = getservice(p)) == -1) 7147 return (-1); 7148 if (r->a == r->b) { 7149 r->b = 0; 7150 r->t = PF_OP_NONE; 7151 } else 7152 r->t = PF_OP_RRG; 7153 return (0); 7154 } 7155 return (-1); 7156 } 7157 7158 int 7159 pfctl_load_anchors(int dev, struct pfctl *pf, struct pfr_buffer *trans) 7160 { 7161 struct loadanchors *la; 7162 7163 TAILQ_FOREACH(la, &loadanchorshead, entries) { 7164 if (pf->opts & PF_OPT_VERBOSE) 7165 fprintf(stderr, "\nLoading anchor %s from %s\n", 7166 la->anchorname, la->filename); 7167 if (pfctl_rules(dev, la->filename, pf->opts, pf->optimize, 7168 la->anchorname, trans) == -1) 7169 return (-1); 7170 } 7171 7172 return (0); 7173 } 7174 7175 int 7176 kw_casecmp(const void *k, const void *e) 7177 { 7178 return (strcasecmp(k, ((const struct keywords *)e)->k_name)); 7179 } 7180 7181 int 7182 map_tos(char *s, int *val) 7183 { 7184 /* DiffServ Codepoints and other TOS mappings */ 7185 const struct keywords toswords[] = { 7186 { "af11", IPTOS_DSCP_AF11 }, 7187 { "af12", IPTOS_DSCP_AF12 }, 7188 { "af13", IPTOS_DSCP_AF13 }, 7189 { "af21", IPTOS_DSCP_AF21 }, 7190 { "af22", IPTOS_DSCP_AF22 }, 7191 { "af23", IPTOS_DSCP_AF23 }, 7192 { "af31", IPTOS_DSCP_AF31 }, 7193 { "af32", IPTOS_DSCP_AF32 }, 7194 { "af33", IPTOS_DSCP_AF33 }, 7195 { "af41", IPTOS_DSCP_AF41 }, 7196 { "af42", IPTOS_DSCP_AF42 }, 7197 { "af43", IPTOS_DSCP_AF43 }, 7198 { "critical", IPTOS_PREC_CRITIC_ECP }, 7199 { "cs0", IPTOS_DSCP_CS0 }, 7200 { "cs1", IPTOS_DSCP_CS1 }, 7201 { "cs2", IPTOS_DSCP_CS2 }, 7202 { "cs3", IPTOS_DSCP_CS3 }, 7203 { "cs4", IPTOS_DSCP_CS4 }, 7204 { "cs5", IPTOS_DSCP_CS5 }, 7205 { "cs6", IPTOS_DSCP_CS6 }, 7206 { "cs7", IPTOS_DSCP_CS7 }, 7207 { "ef", IPTOS_DSCP_EF }, 7208 { "inetcontrol", IPTOS_PREC_INTERNETCONTROL }, 7209 { "lowdelay", IPTOS_LOWDELAY }, 7210 { "netcontrol", IPTOS_PREC_NETCONTROL }, 7211 { "reliability", IPTOS_RELIABILITY }, 7212 { "throughput", IPTOS_THROUGHPUT }, 7213 { "va", IPTOS_DSCP_VA } 7214 }; 7215 const struct keywords *p; 7216 7217 p = bsearch(s, toswords, sizeof(toswords)/sizeof(toswords[0]), 7218 sizeof(toswords[0]), kw_casecmp); 7219 7220 if (p) { 7221 *val = p->k_val; 7222 return (1); 7223 } 7224 return (0); 7225 } 7226 7227 int 7228 rt_tableid_max(void) 7229 { 7230 #ifdef __FreeBSD__ 7231 int fibs; 7232 size_t l = sizeof(fibs); 7233 7234 if (sysctlbyname("net.fibs", &fibs, &l, NULL, 0) == -1) 7235 fibs = 16; /* XXX RT_MAXFIBS, at least limit it some. */ 7236 /* 7237 * As the OpenBSD code only compares > and not >= we need to adjust 7238 * here given we only accept values of 0..n and want to avoid #ifdefs 7239 * in the grammar. 7240 */ 7241 return (fibs - 1); 7242 #else 7243 return (RT_TABLEID_MAX); 7244 #endif 7245 } 7246 7247 struct node_mac* 7248 node_mac_from_string(const char *str) 7249 { 7250 struct node_mac *m; 7251 7252 m = calloc(1, sizeof(struct node_mac)); 7253 if (m == NULL) 7254 err(1, "mac: calloc"); 7255 7256 if (sscanf(str, "%02hhx:%02hhx:%02hhx:%02hhx:%02hhx:%02hhx", 7257 &m->mac[0], &m->mac[1], &m->mac[2], &m->mac[3], &m->mac[4], 7258 &m->mac[5]) != 6) { 7259 free(m); 7260 yyerror("invalid MAC address"); 7261 return (NULL); 7262 } 7263 7264 memset(m->mask, 0xff, ETHER_ADDR_LEN); 7265 m->isset = true; 7266 m->next = NULL; 7267 m->tail = m; 7268 7269 return (m); 7270 } 7271 7272 struct node_mac* 7273 node_mac_from_string_masklen(const char *str, int masklen) 7274 { 7275 struct node_mac *m; 7276 7277 if (masklen < 0 || masklen > (ETHER_ADDR_LEN * 8)) { 7278 yyerror("invalid MAC mask length"); 7279 return (NULL); 7280 } 7281 7282 m = node_mac_from_string(str); 7283 if (m == NULL) 7284 return (NULL); 7285 7286 memset(m->mask, 0, ETHER_ADDR_LEN); 7287 for (int i = 0; i < masklen; i++) 7288 m->mask[i / 8] |= 1 << (i % 8); 7289 7290 return (m); 7291 } 7292 7293 struct node_mac* 7294 node_mac_from_string_mask(const char *str, const char *mask) 7295 { 7296 struct node_mac *m; 7297 7298 m = node_mac_from_string(str); 7299 if (m == NULL) 7300 return (NULL); 7301 7302 if (sscanf(mask, "%02hhx:%02hhx:%02hhx:%02hhx:%02hhx:%02hhx", 7303 &m->mask[0], &m->mask[1], &m->mask[2], &m->mask[3], &m->mask[4], 7304 &m->mask[5]) != 6) { 7305 free(m); 7306 yyerror("invalid MAC mask"); 7307 return (NULL); 7308 } 7309 7310 return (m); 7311 } 7312