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 MATCHES 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 | MATCHES { $$.log = PF_LOG_MATCHES; $$.logif = 0; } 3226 | USER { $$.log = PF_LOG_SOCKET_LOOKUP; $$.logif = 0; } 3227 | GROUP { $$.log = PF_LOG_SOCKET_LOOKUP; $$.logif = 0; } 3228 | TO string { 3229 const char *errstr; 3230 u_int i; 3231 3232 $$.log = 0; 3233 if (strncmp($2, "pflog", 5)) { 3234 yyerror("%s: should be a pflog interface", $2); 3235 free($2); 3236 YYERROR; 3237 } 3238 i = strtonum($2 + 5, 0, 255, &errstr); 3239 if (errstr) { 3240 yyerror("%s: %s", $2, errstr); 3241 free($2); 3242 YYERROR; 3243 } 3244 free($2); 3245 $$.logif = i; 3246 } 3247 ; 3248 3249 interface : /* empty */ { $$ = NULL; } 3250 | ON if_item_not { $$ = $2; } 3251 | ON '{' optnl if_list '}' { $$ = $4; } 3252 ; 3253 3254 if_list : if_item_not optnl { $$ = $1; } 3255 | if_list comma if_item_not optnl { 3256 $1->tail->next = $3; 3257 $1->tail = $3; 3258 $$ = $1; 3259 } 3260 ; 3261 3262 if_item_not : not if_item { $$ = $2; $$->not = $1; } 3263 ; 3264 3265 if_item : STRING { 3266 struct node_host *n; 3267 3268 $$ = calloc(1, sizeof(struct node_if)); 3269 if ($$ == NULL) 3270 err(1, "if_item: calloc"); 3271 if (strlcpy($$->ifname, $1, sizeof($$->ifname)) >= 3272 sizeof($$->ifname)) { 3273 free($1); 3274 free($$); 3275 yyerror("interface name too long"); 3276 YYERROR; 3277 } 3278 3279 if ((n = ifa_exists($1)) != NULL) 3280 $$->ifa_flags = n->ifa_flags; 3281 3282 free($1); 3283 $$->not = 0; 3284 $$->next = NULL; 3285 $$->tail = $$; 3286 } 3287 ; 3288 3289 af : /* empty */ { $$ = 0; } 3290 | INET { $$ = AF_INET; } 3291 | INET6 { $$ = AF_INET6; } 3292 ; 3293 3294 etherproto : /* empty */ { $$ = NULL; } 3295 | PROTO etherproto_item { $$ = $2; } 3296 | PROTO '{' optnl etherproto_list '}' { $$ = $4; } 3297 ; 3298 3299 etherproto_list : etherproto_item optnl { $$ = $1; } 3300 | etherproto_list comma etherproto_item optnl { 3301 $1->tail->next = $3; 3302 $1->tail = $3; 3303 $$ = $1; 3304 } 3305 ; 3306 3307 etherproto_item : etherprotoval { 3308 u_int16_t pr; 3309 3310 pr = (u_int16_t)$1; 3311 if (pr == 0) { 3312 yyerror("proto 0 cannot be used"); 3313 YYERROR; 3314 } 3315 $$ = calloc(1, sizeof(struct node_proto)); 3316 if ($$ == NULL) 3317 err(1, "proto_item: calloc"); 3318 $$->proto = pr; 3319 $$->next = NULL; 3320 $$->tail = $$; 3321 } 3322 ; 3323 3324 etherprotoval : NUMBER { 3325 if ($1 < 0 || $1 > 65565) { 3326 yyerror("protocol outside range"); 3327 YYERROR; 3328 } 3329 } 3330 | STRING 3331 { 3332 if (!strncmp($1, "0x", 2)) { 3333 if (sscanf($1, "0x%4x", &$$) != 1) { 3334 free($1); 3335 yyerror("invalid EtherType hex"); 3336 YYERROR; 3337 } 3338 } else { 3339 yyerror("Symbolic EtherType not yet supported"); 3340 } 3341 } 3342 ; 3343 3344 proto : /* empty */ { $$ = NULL; } 3345 | PROTO proto_item { $$ = $2; } 3346 | PROTO '{' optnl proto_list '}' { $$ = $4; } 3347 ; 3348 3349 proto_list : proto_item optnl { $$ = $1; } 3350 | proto_list comma proto_item optnl { 3351 $1->tail->next = $3; 3352 $1->tail = $3; 3353 $$ = $1; 3354 } 3355 ; 3356 3357 proto_item : protoval { 3358 u_int8_t pr; 3359 3360 pr = (u_int8_t)$1; 3361 if (pr == 0) { 3362 yyerror("proto 0 cannot be used"); 3363 YYERROR; 3364 } 3365 $$ = calloc(1, sizeof(struct node_proto)); 3366 if ($$ == NULL) 3367 err(1, "proto_item: calloc"); 3368 $$->proto = pr; 3369 $$->next = NULL; 3370 $$->tail = $$; 3371 } 3372 ; 3373 3374 protoval : STRING { 3375 struct protoent *p; 3376 3377 p = getprotobyname($1); 3378 if (p == NULL) { 3379 yyerror("unknown protocol %s", $1); 3380 free($1); 3381 YYERROR; 3382 } 3383 $$ = p->p_proto; 3384 free($1); 3385 } 3386 | NUMBER { 3387 if ($1 < 0 || $1 > 255) { 3388 yyerror("protocol outside range"); 3389 YYERROR; 3390 } 3391 } 3392 ; 3393 3394 l3fromto : /* empty */ { 3395 bzero(&$$, sizeof($$)); 3396 } 3397 | L3 fromto { 3398 if ($2.src.host != NULL && 3399 $2.src.host->addr.type != PF_ADDR_ADDRMASK && 3400 $2.src.host->addr.type != PF_ADDR_TABLE) { 3401 yyerror("from must be an address or table"); 3402 YYERROR; 3403 } 3404 if ($2.dst.host != NULL && 3405 $2.dst.host->addr.type != PF_ADDR_ADDRMASK && 3406 $2.dst.host->addr.type != PF_ADDR_TABLE) { 3407 yyerror("to must be an address or table"); 3408 YYERROR; 3409 } 3410 $$ = $2; 3411 } 3412 ; 3413 etherfromto : ALL { 3414 $$.src = NULL; 3415 $$.dst = NULL; 3416 } 3417 | etherfrom etherto { 3418 $$.src = $1.mac; 3419 $$.dst = $2.mac; 3420 } 3421 ; 3422 3423 etherfrom : /* emtpy */ { 3424 bzero(&$$, sizeof($$)); 3425 } 3426 | FROM macspec { 3427 $$.mac = $2; 3428 } 3429 ; 3430 3431 etherto : /* empty */ { 3432 bzero(&$$, sizeof($$)); 3433 } 3434 | TO macspec { 3435 $$.mac = $2; 3436 } 3437 ; 3438 3439 mac : string '/' NUMBER { 3440 $$ = node_mac_from_string_masklen($1, $3); 3441 free($1); 3442 if ($$ == NULL) 3443 YYERROR; 3444 } 3445 | string { 3446 if (strchr($1, '&')) { 3447 /* mac&mask */ 3448 char *mac = strtok($1, "&"); 3449 char *mask = strtok(NULL, "&"); 3450 $$ = node_mac_from_string_mask(mac, mask); 3451 } else { 3452 $$ = node_mac_from_string($1); 3453 } 3454 free($1); 3455 if ($$ == NULL) 3456 YYERROR; 3457 3458 } 3459 xmac : not mac { 3460 struct node_mac *n; 3461 3462 for (n = $2; n != NULL; n = n->next) 3463 n->neg = $1; 3464 $$ = $2; 3465 } 3466 ; 3467 macspec : xmac { 3468 $$ = $1; 3469 } 3470 | '{' optnl mac_list '}' 3471 { 3472 $$ = $3; 3473 } 3474 ; 3475 mac_list : xmac optnl { 3476 $$ = $1; 3477 } 3478 | mac_list comma xmac { 3479 if ($3 == NULL) 3480 $$ = $1; 3481 else if ($1 == NULL) 3482 $$ = $3; 3483 else { 3484 $1->tail->next = $3; 3485 $1->tail = $3->tail; 3486 $$ = $1; 3487 } 3488 } 3489 3490 fromto : ALL { 3491 $$.src.host = NULL; 3492 $$.src.port = NULL; 3493 $$.dst.host = NULL; 3494 $$.dst.port = NULL; 3495 $$.src_os = NULL; 3496 } 3497 | from os to { 3498 $$.src = $1; 3499 $$.src_os = $2; 3500 $$.dst = $3; 3501 } 3502 ; 3503 3504 os : /* empty */ { $$ = NULL; } 3505 | OS xos { $$ = $2; } 3506 | OS '{' optnl os_list '}' { $$ = $4; } 3507 ; 3508 3509 xos : STRING { 3510 $$ = calloc(1, sizeof(struct node_os)); 3511 if ($$ == NULL) 3512 err(1, "os: calloc"); 3513 $$->os = $1; 3514 $$->tail = $$; 3515 } 3516 ; 3517 3518 os_list : xos optnl { $$ = $1; } 3519 | os_list comma xos optnl { 3520 $1->tail->next = $3; 3521 $1->tail = $3; 3522 $$ = $1; 3523 } 3524 ; 3525 3526 from : /* empty */ { 3527 $$.host = NULL; 3528 $$.port = NULL; 3529 } 3530 | FROM ipportspec { 3531 $$ = $2; 3532 } 3533 ; 3534 3535 to : /* empty */ { 3536 $$.host = NULL; 3537 $$.port = NULL; 3538 } 3539 | TO ipportspec { 3540 if (disallow_urpf_failed($2.host, "\"urpf-failed\" is " 3541 "not permitted in a destination address")) 3542 YYERROR; 3543 $$ = $2; 3544 } 3545 ; 3546 3547 ipportspec : ipspec { 3548 $$.host = $1; 3549 $$.port = NULL; 3550 } 3551 | ipspec PORT portspec { 3552 $$.host = $1; 3553 $$.port = $3; 3554 } 3555 | PORT portspec { 3556 $$.host = NULL; 3557 $$.port = $2; 3558 } 3559 ; 3560 3561 optnl : '\n' optnl 3562 | 3563 ; 3564 3565 ipspec : ANY { $$ = NULL; } 3566 | xhost { $$ = $1; } 3567 | '{' optnl host_list '}' { $$ = $3; } 3568 ; 3569 3570 toipspec : TO ipspec { $$ = $2; } 3571 | /* empty */ { $$ = NULL; } 3572 ; 3573 3574 host_list : ipspec optnl { $$ = $1; } 3575 | host_list comma ipspec optnl { 3576 if ($1 == NULL) { 3577 freehostlist($3); 3578 $$ = $1; 3579 } else if ($3 == NULL) { 3580 freehostlist($1); 3581 $$ = $3; 3582 } else { 3583 $1->tail->next = $3; 3584 $1->tail = $3->tail; 3585 $$ = $1; 3586 } 3587 } 3588 ; 3589 3590 xhost : not host { 3591 struct node_host *n; 3592 3593 for (n = $2; n != NULL; n = n->next) 3594 n->not = $1; 3595 $$ = $2; 3596 } 3597 | not NOROUTE { 3598 $$ = calloc(1, sizeof(struct node_host)); 3599 if ($$ == NULL) 3600 err(1, "xhost: calloc"); 3601 $$->addr.type = PF_ADDR_NOROUTE; 3602 $$->next = NULL; 3603 $$->not = $1; 3604 $$->tail = $$; 3605 } 3606 | not URPFFAILED { 3607 $$ = calloc(1, sizeof(struct node_host)); 3608 if ($$ == NULL) 3609 err(1, "xhost: calloc"); 3610 $$->addr.type = PF_ADDR_URPFFAILED; 3611 $$->next = NULL; 3612 $$->not = $1; 3613 $$->tail = $$; 3614 } 3615 ; 3616 3617 host : STRING { 3618 if (($$ = host($1)) == NULL) { 3619 /* error. "any" is handled elsewhere */ 3620 free($1); 3621 yyerror("could not parse host specification"); 3622 YYERROR; 3623 } 3624 free($1); 3625 3626 } 3627 | STRING '-' STRING { 3628 struct node_host *b, *e; 3629 3630 if ((b = host($1)) == NULL || (e = host($3)) == NULL) { 3631 free($1); 3632 free($3); 3633 yyerror("could not parse host specification"); 3634 YYERROR; 3635 } 3636 if (b->af != e->af || 3637 b->addr.type != PF_ADDR_ADDRMASK || 3638 e->addr.type != PF_ADDR_ADDRMASK || 3639 unmask(&b->addr.v.a.mask, b->af) != 3640 (b->af == AF_INET ? 32 : 128) || 3641 unmask(&e->addr.v.a.mask, e->af) != 3642 (e->af == AF_INET ? 32 : 128) || 3643 b->next != NULL || b->not || 3644 e->next != NULL || e->not) { 3645 free(b); 3646 free(e); 3647 free($1); 3648 free($3); 3649 yyerror("invalid address range"); 3650 YYERROR; 3651 } 3652 memcpy(&b->addr.v.a.mask, &e->addr.v.a.addr, 3653 sizeof(b->addr.v.a.mask)); 3654 b->addr.type = PF_ADDR_RANGE; 3655 $$ = b; 3656 free(e); 3657 free($1); 3658 free($3); 3659 } 3660 | STRING '/' NUMBER { 3661 char *buf; 3662 3663 if (asprintf(&buf, "%s/%lld", $1, (long long)$3) == -1) 3664 err(1, "host: asprintf"); 3665 free($1); 3666 if (($$ = host(buf)) == NULL) { 3667 /* error. "any" is handled elsewhere */ 3668 free(buf); 3669 yyerror("could not parse host specification"); 3670 YYERROR; 3671 } 3672 free(buf); 3673 } 3674 | NUMBER '/' NUMBER { 3675 char *buf; 3676 3677 /* ie. for 10/8 parsing */ 3678 #ifdef __FreeBSD__ 3679 if (asprintf(&buf, "%lld/%lld", (long long)$1, (long long)$3) == -1) 3680 #else 3681 if (asprintf(&buf, "%lld/%lld", $1, $3) == -1) 3682 #endif 3683 err(1, "host: asprintf"); 3684 if (($$ = host(buf)) == NULL) { 3685 /* error. "any" is handled elsewhere */ 3686 free(buf); 3687 yyerror("could not parse host specification"); 3688 YYERROR; 3689 } 3690 free(buf); 3691 } 3692 | dynaddr 3693 | dynaddr '/' NUMBER { 3694 struct node_host *n; 3695 3696 if ($3 < 0 || $3 > 128) { 3697 yyerror("bit number too big"); 3698 YYERROR; 3699 } 3700 $$ = $1; 3701 for (n = $1; n != NULL; n = n->next) 3702 set_ipmask(n, $3); 3703 } 3704 | '<' STRING '>' { 3705 if (strlen($2) >= PF_TABLE_NAME_SIZE) { 3706 yyerror("table name '%s' too long", $2); 3707 free($2); 3708 YYERROR; 3709 } 3710 $$ = calloc(1, sizeof(struct node_host)); 3711 if ($$ == NULL) 3712 err(1, "host: calloc"); 3713 $$->addr.type = PF_ADDR_TABLE; 3714 if (strlcpy($$->addr.v.tblname, $2, 3715 sizeof($$->addr.v.tblname)) >= 3716 sizeof($$->addr.v.tblname)) 3717 errx(1, "host: strlcpy"); 3718 free($2); 3719 $$->next = NULL; 3720 $$->tail = $$; 3721 } 3722 ; 3723 3724 number : NUMBER 3725 | STRING { 3726 u_long ulval; 3727 3728 if (atoul($1, &ulval) == -1) { 3729 yyerror("%s is not a number", $1); 3730 free($1); 3731 YYERROR; 3732 } else 3733 $$ = ulval; 3734 free($1); 3735 } 3736 ; 3737 3738 dynaddr : '(' STRING ')' { 3739 int flags = 0; 3740 char *p, *op; 3741 3742 op = $2; 3743 if (!isalpha(op[0])) { 3744 yyerror("invalid interface name '%s'", op); 3745 free(op); 3746 YYERROR; 3747 } 3748 while ((p = strrchr($2, ':')) != NULL) { 3749 if (!strcmp(p+1, "network")) 3750 flags |= PFI_AFLAG_NETWORK; 3751 else if (!strcmp(p+1, "broadcast")) 3752 flags |= PFI_AFLAG_BROADCAST; 3753 else if (!strcmp(p+1, "peer")) 3754 flags |= PFI_AFLAG_PEER; 3755 else if (!strcmp(p+1, "0")) 3756 flags |= PFI_AFLAG_NOALIAS; 3757 else { 3758 yyerror("interface %s has bad modifier", 3759 $2); 3760 free(op); 3761 YYERROR; 3762 } 3763 *p = '\0'; 3764 } 3765 if (flags & (flags - 1) & PFI_AFLAG_MODEMASK) { 3766 free(op); 3767 yyerror("illegal combination of " 3768 "interface modifiers"); 3769 YYERROR; 3770 } 3771 $$ = calloc(1, sizeof(struct node_host)); 3772 if ($$ == NULL) 3773 err(1, "address: calloc"); 3774 $$->af = 0; 3775 set_ipmask($$, 128); 3776 $$->addr.type = PF_ADDR_DYNIFTL; 3777 $$->addr.iflags = flags; 3778 if (strlcpy($$->addr.v.ifname, $2, 3779 sizeof($$->addr.v.ifname)) >= 3780 sizeof($$->addr.v.ifname)) { 3781 free(op); 3782 free($$); 3783 yyerror("interface name too long"); 3784 YYERROR; 3785 } 3786 free(op); 3787 $$->next = NULL; 3788 $$->tail = $$; 3789 } 3790 ; 3791 3792 portspec : port_item { $$ = $1; } 3793 | '{' optnl port_list '}' { $$ = $3; } 3794 ; 3795 3796 port_list : port_item optnl { $$ = $1; } 3797 | port_list comma port_item optnl { 3798 $1->tail->next = $3; 3799 $1->tail = $3; 3800 $$ = $1; 3801 } 3802 ; 3803 3804 port_item : portrange { 3805 $$ = calloc(1, sizeof(struct node_port)); 3806 if ($$ == NULL) 3807 err(1, "port_item: calloc"); 3808 $$->port[0] = $1.a; 3809 $$->port[1] = $1.b; 3810 if ($1.t) 3811 $$->op = PF_OP_RRG; 3812 else 3813 $$->op = PF_OP_EQ; 3814 $$->next = NULL; 3815 $$->tail = $$; 3816 } 3817 | unaryop portrange { 3818 if ($2.t) { 3819 yyerror("':' cannot be used with an other " 3820 "port operator"); 3821 YYERROR; 3822 } 3823 $$ = calloc(1, sizeof(struct node_port)); 3824 if ($$ == NULL) 3825 err(1, "port_item: calloc"); 3826 $$->port[0] = $2.a; 3827 $$->port[1] = $2.b; 3828 $$->op = $1; 3829 $$->next = NULL; 3830 $$->tail = $$; 3831 } 3832 | portrange PORTBINARY portrange { 3833 if ($1.t || $3.t) { 3834 yyerror("':' cannot be used with an other " 3835 "port operator"); 3836 YYERROR; 3837 } 3838 $$ = calloc(1, sizeof(struct node_port)); 3839 if ($$ == NULL) 3840 err(1, "port_item: calloc"); 3841 $$->port[0] = $1.a; 3842 $$->port[1] = $3.a; 3843 $$->op = $2; 3844 $$->next = NULL; 3845 $$->tail = $$; 3846 } 3847 ; 3848 3849 portplain : numberstring { 3850 if (parseport($1, &$$, 0) == -1) { 3851 free($1); 3852 YYERROR; 3853 } 3854 free($1); 3855 } 3856 ; 3857 3858 portrange : numberstring { 3859 if (parseport($1, &$$, PPORT_RANGE) == -1) { 3860 free($1); 3861 YYERROR; 3862 } 3863 free($1); 3864 } 3865 ; 3866 3867 uids : uid_item { $$ = $1; } 3868 | '{' optnl uid_list '}' { $$ = $3; } 3869 ; 3870 3871 uid_list : uid_item optnl { $$ = $1; } 3872 | uid_list comma uid_item optnl { 3873 $1->tail->next = $3; 3874 $1->tail = $3; 3875 $$ = $1; 3876 } 3877 ; 3878 3879 uid_item : uid { 3880 $$ = calloc(1, sizeof(struct node_uid)); 3881 if ($$ == NULL) 3882 err(1, "uid_item: calloc"); 3883 $$->uid[0] = $1; 3884 $$->uid[1] = $1; 3885 $$->op = PF_OP_EQ; 3886 $$->next = NULL; 3887 $$->tail = $$; 3888 } 3889 | unaryop uid { 3890 if ($2 == UID_MAX && $1 != PF_OP_EQ && $1 != PF_OP_NE) { 3891 yyerror("user unknown requires operator = or " 3892 "!="); 3893 YYERROR; 3894 } 3895 $$ = calloc(1, sizeof(struct node_uid)); 3896 if ($$ == NULL) 3897 err(1, "uid_item: calloc"); 3898 $$->uid[0] = $2; 3899 $$->uid[1] = $2; 3900 $$->op = $1; 3901 $$->next = NULL; 3902 $$->tail = $$; 3903 } 3904 | uid PORTBINARY uid { 3905 if ($1 == UID_MAX || $3 == UID_MAX) { 3906 yyerror("user unknown requires operator = or " 3907 "!="); 3908 YYERROR; 3909 } 3910 $$ = calloc(1, sizeof(struct node_uid)); 3911 if ($$ == NULL) 3912 err(1, "uid_item: calloc"); 3913 $$->uid[0] = $1; 3914 $$->uid[1] = $3; 3915 $$->op = $2; 3916 $$->next = NULL; 3917 $$->tail = $$; 3918 } 3919 ; 3920 3921 uid : STRING { 3922 if (!strcmp($1, "unknown")) 3923 $$ = UID_MAX; 3924 else { 3925 struct passwd *pw; 3926 3927 if ((pw = getpwnam($1)) == NULL) { 3928 yyerror("unknown user %s", $1); 3929 free($1); 3930 YYERROR; 3931 } 3932 $$ = pw->pw_uid; 3933 } 3934 free($1); 3935 } 3936 | NUMBER { 3937 if ($1 < 0 || $1 >= UID_MAX) { 3938 yyerror("illegal uid value %lu", $1); 3939 YYERROR; 3940 } 3941 $$ = $1; 3942 } 3943 ; 3944 3945 gids : gid_item { $$ = $1; } 3946 | '{' optnl gid_list '}' { $$ = $3; } 3947 ; 3948 3949 gid_list : gid_item optnl { $$ = $1; } 3950 | gid_list comma gid_item optnl { 3951 $1->tail->next = $3; 3952 $1->tail = $3; 3953 $$ = $1; 3954 } 3955 ; 3956 3957 gid_item : gid { 3958 $$ = calloc(1, sizeof(struct node_gid)); 3959 if ($$ == NULL) 3960 err(1, "gid_item: calloc"); 3961 $$->gid[0] = $1; 3962 $$->gid[1] = $1; 3963 $$->op = PF_OP_EQ; 3964 $$->next = NULL; 3965 $$->tail = $$; 3966 } 3967 | unaryop gid { 3968 if ($2 == GID_MAX && $1 != PF_OP_EQ && $1 != PF_OP_NE) { 3969 yyerror("group unknown requires operator = or " 3970 "!="); 3971 YYERROR; 3972 } 3973 $$ = calloc(1, sizeof(struct node_gid)); 3974 if ($$ == NULL) 3975 err(1, "gid_item: calloc"); 3976 $$->gid[0] = $2; 3977 $$->gid[1] = $2; 3978 $$->op = $1; 3979 $$->next = NULL; 3980 $$->tail = $$; 3981 } 3982 | gid PORTBINARY gid { 3983 if ($1 == GID_MAX || $3 == GID_MAX) { 3984 yyerror("group unknown requires operator = or " 3985 "!="); 3986 YYERROR; 3987 } 3988 $$ = calloc(1, sizeof(struct node_gid)); 3989 if ($$ == NULL) 3990 err(1, "gid_item: calloc"); 3991 $$->gid[0] = $1; 3992 $$->gid[1] = $3; 3993 $$->op = $2; 3994 $$->next = NULL; 3995 $$->tail = $$; 3996 } 3997 ; 3998 3999 gid : STRING { 4000 if (!strcmp($1, "unknown")) 4001 $$ = GID_MAX; 4002 else { 4003 struct group *grp; 4004 4005 if ((grp = getgrnam($1)) == NULL) { 4006 yyerror("unknown group %s", $1); 4007 free($1); 4008 YYERROR; 4009 } 4010 $$ = grp->gr_gid; 4011 } 4012 free($1); 4013 } 4014 | NUMBER { 4015 if ($1 < 0 || $1 >= GID_MAX) { 4016 yyerror("illegal gid value %lu", $1); 4017 YYERROR; 4018 } 4019 $$ = $1; 4020 } 4021 ; 4022 4023 flag : STRING { 4024 int f; 4025 4026 if ((f = parse_flags($1)) < 0) { 4027 yyerror("bad flags %s", $1); 4028 free($1); 4029 YYERROR; 4030 } 4031 free($1); 4032 $$.b1 = f; 4033 } 4034 ; 4035 4036 flags : FLAGS flag '/' flag { $$.b1 = $2.b1; $$.b2 = $4.b1; } 4037 | FLAGS '/' flag { $$.b1 = 0; $$.b2 = $3.b1; } 4038 | FLAGS ANY { $$.b1 = 0; $$.b2 = 0; } 4039 ; 4040 4041 icmpspec : ICMPTYPE icmp_item { $$ = $2; } 4042 | ICMPTYPE '{' optnl icmp_list '}' { $$ = $4; } 4043 | ICMP6TYPE icmp6_item { $$ = $2; } 4044 | ICMP6TYPE '{' optnl icmp6_list '}' { $$ = $4; } 4045 ; 4046 4047 icmp_list : icmp_item optnl { $$ = $1; } 4048 | icmp_list comma icmp_item optnl { 4049 $1->tail->next = $3; 4050 $1->tail = $3; 4051 $$ = $1; 4052 } 4053 ; 4054 4055 icmp6_list : icmp6_item optnl { $$ = $1; } 4056 | icmp6_list comma icmp6_item optnl { 4057 $1->tail->next = $3; 4058 $1->tail = $3; 4059 $$ = $1; 4060 } 4061 ; 4062 4063 icmp_item : icmptype { 4064 $$ = calloc(1, sizeof(struct node_icmp)); 4065 if ($$ == NULL) 4066 err(1, "icmp_item: calloc"); 4067 $$->type = $1; 4068 $$->code = 0; 4069 $$->proto = IPPROTO_ICMP; 4070 $$->next = NULL; 4071 $$->tail = $$; 4072 } 4073 | icmptype CODE STRING { 4074 const struct icmpcodeent *p; 4075 4076 if ((p = geticmpcodebyname($1-1, $3, AF_INET)) == NULL) { 4077 yyerror("unknown icmp-code %s", $3); 4078 free($3); 4079 YYERROR; 4080 } 4081 4082 free($3); 4083 $$ = calloc(1, sizeof(struct node_icmp)); 4084 if ($$ == NULL) 4085 err(1, "icmp_item: calloc"); 4086 $$->type = $1; 4087 $$->code = p->code + 1; 4088 $$->proto = IPPROTO_ICMP; 4089 $$->next = NULL; 4090 $$->tail = $$; 4091 } 4092 | icmptype CODE NUMBER { 4093 if ($3 < 0 || $3 > 255) { 4094 yyerror("illegal icmp-code %lu", $3); 4095 YYERROR; 4096 } 4097 $$ = calloc(1, sizeof(struct node_icmp)); 4098 if ($$ == NULL) 4099 err(1, "icmp_item: calloc"); 4100 $$->type = $1; 4101 $$->code = $3 + 1; 4102 $$->proto = IPPROTO_ICMP; 4103 $$->next = NULL; 4104 $$->tail = $$; 4105 } 4106 ; 4107 4108 icmp6_item : icmp6type { 4109 $$ = calloc(1, sizeof(struct node_icmp)); 4110 if ($$ == NULL) 4111 err(1, "icmp_item: calloc"); 4112 $$->type = $1; 4113 $$->code = 0; 4114 $$->proto = IPPROTO_ICMPV6; 4115 $$->next = NULL; 4116 $$->tail = $$; 4117 } 4118 | icmp6type CODE STRING { 4119 const struct icmpcodeent *p; 4120 4121 if ((p = geticmpcodebyname($1-1, $3, AF_INET6)) == NULL) { 4122 yyerror("unknown icmp6-code %s", $3); 4123 free($3); 4124 YYERROR; 4125 } 4126 free($3); 4127 4128 $$ = calloc(1, sizeof(struct node_icmp)); 4129 if ($$ == NULL) 4130 err(1, "icmp_item: calloc"); 4131 $$->type = $1; 4132 $$->code = p->code + 1; 4133 $$->proto = IPPROTO_ICMPV6; 4134 $$->next = NULL; 4135 $$->tail = $$; 4136 } 4137 | icmp6type CODE NUMBER { 4138 if ($3 < 0 || $3 > 255) { 4139 yyerror("illegal icmp-code %lu", $3); 4140 YYERROR; 4141 } 4142 $$ = calloc(1, sizeof(struct node_icmp)); 4143 if ($$ == NULL) 4144 err(1, "icmp_item: calloc"); 4145 $$->type = $1; 4146 $$->code = $3 + 1; 4147 $$->proto = IPPROTO_ICMPV6; 4148 $$->next = NULL; 4149 $$->tail = $$; 4150 } 4151 ; 4152 4153 icmptype : STRING { 4154 const struct icmptypeent *p; 4155 4156 if ((p = geticmptypebyname($1, AF_INET)) == NULL) { 4157 yyerror("unknown icmp-type %s", $1); 4158 free($1); 4159 YYERROR; 4160 } 4161 $$ = p->type + 1; 4162 free($1); 4163 } 4164 | NUMBER { 4165 if ($1 < 0 || $1 > 255) { 4166 yyerror("illegal icmp-type %lu", $1); 4167 YYERROR; 4168 } 4169 $$ = $1 + 1; 4170 } 4171 ; 4172 4173 icmp6type : STRING { 4174 const struct icmptypeent *p; 4175 4176 if ((p = geticmptypebyname($1, AF_INET6)) == 4177 NULL) { 4178 yyerror("unknown icmp6-type %s", $1); 4179 free($1); 4180 YYERROR; 4181 } 4182 $$ = p->type + 1; 4183 free($1); 4184 } 4185 | NUMBER { 4186 if ($1 < 0 || $1 > 255) { 4187 yyerror("illegal icmp6-type %lu", $1); 4188 YYERROR; 4189 } 4190 $$ = $1 + 1; 4191 } 4192 ; 4193 4194 tos : STRING { 4195 int val; 4196 char *end; 4197 4198 if (map_tos($1, &val)) 4199 $$ = val; 4200 else if ($1[0] == '0' && $1[1] == 'x') { 4201 errno = 0; 4202 $$ = strtoul($1, &end, 16); 4203 if (errno || *end != '\0') 4204 $$ = 256; 4205 } else 4206 $$ = 256; /* flag bad argument */ 4207 if ($$ < 0 || $$ > 255) { 4208 yyerror("illegal tos value %s", $1); 4209 free($1); 4210 YYERROR; 4211 } 4212 free($1); 4213 } 4214 | NUMBER { 4215 $$ = $1; 4216 if ($$ < 0 || $$ > 255) { 4217 yyerror("illegal tos value %lu", $1); 4218 YYERROR; 4219 } 4220 } 4221 ; 4222 4223 sourcetrack : SOURCETRACK { $$ = PF_SRCTRACK; } 4224 | SOURCETRACK GLOBAL { $$ = PF_SRCTRACK_GLOBAL; } 4225 | SOURCETRACK RULE { $$ = PF_SRCTRACK_RULE; } 4226 ; 4227 4228 statelock : IFBOUND { 4229 $$ = PFRULE_IFBOUND; 4230 } 4231 | FLOATING { 4232 $$ = 0; 4233 } 4234 ; 4235 4236 keep : NO STATE { 4237 $$.action = 0; 4238 $$.options = NULL; 4239 } 4240 | KEEP STATE state_opt_spec { 4241 $$.action = PF_STATE_NORMAL; 4242 $$.options = $3; 4243 } 4244 | MODULATE STATE state_opt_spec { 4245 $$.action = PF_STATE_MODULATE; 4246 $$.options = $3; 4247 } 4248 | SYNPROXY STATE state_opt_spec { 4249 $$.action = PF_STATE_SYNPROXY; 4250 $$.options = $3; 4251 } 4252 ; 4253 4254 flush : /* empty */ { $$ = 0; } 4255 | FLUSH { $$ = PF_FLUSH; } 4256 | FLUSH GLOBAL { 4257 $$ = PF_FLUSH | PF_FLUSH_GLOBAL; 4258 } 4259 ; 4260 4261 state_opt_spec : '(' state_opt_list ')' { $$ = $2; } 4262 | /* empty */ { $$ = NULL; } 4263 ; 4264 4265 state_opt_list : state_opt_item { $$ = $1; } 4266 | state_opt_list comma state_opt_item { 4267 $1->tail->next = $3; 4268 $1->tail = $3; 4269 $$ = $1; 4270 } 4271 ; 4272 4273 state_opt_item : MAXIMUM NUMBER { 4274 if ($2 < 0 || $2 > UINT_MAX) { 4275 yyerror("only positive values permitted"); 4276 YYERROR; 4277 } 4278 $$ = calloc(1, sizeof(struct node_state_opt)); 4279 if ($$ == NULL) 4280 err(1, "state_opt_item: calloc"); 4281 $$->type = PF_STATE_OPT_MAX; 4282 $$->data.max_states = $2; 4283 $$->next = NULL; 4284 $$->tail = $$; 4285 } 4286 | NOSYNC { 4287 $$ = calloc(1, sizeof(struct node_state_opt)); 4288 if ($$ == NULL) 4289 err(1, "state_opt_item: calloc"); 4290 $$->type = PF_STATE_OPT_NOSYNC; 4291 $$->next = NULL; 4292 $$->tail = $$; 4293 } 4294 | MAXSRCSTATES NUMBER { 4295 if ($2 < 0 || $2 > UINT_MAX) { 4296 yyerror("only positive values permitted"); 4297 YYERROR; 4298 } 4299 $$ = calloc(1, sizeof(struct node_state_opt)); 4300 if ($$ == NULL) 4301 err(1, "state_opt_item: calloc"); 4302 $$->type = PF_STATE_OPT_MAX_SRC_STATES; 4303 $$->data.max_src_states = $2; 4304 $$->next = NULL; 4305 $$->tail = $$; 4306 } 4307 | MAXSRCCONN NUMBER { 4308 if ($2 < 0 || $2 > UINT_MAX) { 4309 yyerror("only positive values permitted"); 4310 YYERROR; 4311 } 4312 $$ = calloc(1, sizeof(struct node_state_opt)); 4313 if ($$ == NULL) 4314 err(1, "state_opt_item: calloc"); 4315 $$->type = PF_STATE_OPT_MAX_SRC_CONN; 4316 $$->data.max_src_conn = $2; 4317 $$->next = NULL; 4318 $$->tail = $$; 4319 } 4320 | MAXSRCCONNRATE NUMBER '/' NUMBER { 4321 if ($2 < 0 || $2 > UINT_MAX || 4322 $4 < 0 || $4 > UINT_MAX) { 4323 yyerror("only positive values permitted"); 4324 YYERROR; 4325 } 4326 $$ = calloc(1, sizeof(struct node_state_opt)); 4327 if ($$ == NULL) 4328 err(1, "state_opt_item: calloc"); 4329 $$->type = PF_STATE_OPT_MAX_SRC_CONN_RATE; 4330 $$->data.max_src_conn_rate.limit = $2; 4331 $$->data.max_src_conn_rate.seconds = $4; 4332 $$->next = NULL; 4333 $$->tail = $$; 4334 } 4335 | OVERLOAD '<' STRING '>' flush { 4336 if (strlen($3) >= PF_TABLE_NAME_SIZE) { 4337 yyerror("table name '%s' too long", $3); 4338 free($3); 4339 YYERROR; 4340 } 4341 $$ = calloc(1, sizeof(struct node_state_opt)); 4342 if ($$ == NULL) 4343 err(1, "state_opt_item: calloc"); 4344 if (strlcpy($$->data.overload.tblname, $3, 4345 PF_TABLE_NAME_SIZE) >= PF_TABLE_NAME_SIZE) 4346 errx(1, "state_opt_item: strlcpy"); 4347 free($3); 4348 $$->type = PF_STATE_OPT_OVERLOAD; 4349 $$->data.overload.flush = $5; 4350 $$->next = NULL; 4351 $$->tail = $$; 4352 } 4353 | MAXSRCNODES NUMBER { 4354 if ($2 < 0 || $2 > UINT_MAX) { 4355 yyerror("only positive values permitted"); 4356 YYERROR; 4357 } 4358 $$ = calloc(1, sizeof(struct node_state_opt)); 4359 if ($$ == NULL) 4360 err(1, "state_opt_item: calloc"); 4361 $$->type = PF_STATE_OPT_MAX_SRC_NODES; 4362 $$->data.max_src_nodes = $2; 4363 $$->next = NULL; 4364 $$->tail = $$; 4365 } 4366 | sourcetrack { 4367 $$ = calloc(1, sizeof(struct node_state_opt)); 4368 if ($$ == NULL) 4369 err(1, "state_opt_item: calloc"); 4370 $$->type = PF_STATE_OPT_SRCTRACK; 4371 $$->data.src_track = $1; 4372 $$->next = NULL; 4373 $$->tail = $$; 4374 } 4375 | statelock { 4376 $$ = calloc(1, sizeof(struct node_state_opt)); 4377 if ($$ == NULL) 4378 err(1, "state_opt_item: calloc"); 4379 $$->type = PF_STATE_OPT_STATELOCK; 4380 $$->data.statelock = $1; 4381 $$->next = NULL; 4382 $$->tail = $$; 4383 } 4384 | SLOPPY { 4385 $$ = calloc(1, sizeof(struct node_state_opt)); 4386 if ($$ == NULL) 4387 err(1, "state_opt_item: calloc"); 4388 $$->type = PF_STATE_OPT_SLOPPY; 4389 $$->next = NULL; 4390 $$->tail = $$; 4391 } 4392 | PFLOW { 4393 $$ = calloc(1, sizeof(struct node_state_opt)); 4394 if ($$ == NULL) 4395 err(1, "state_opt_item: calloc"); 4396 $$->type = PF_STATE_OPT_PFLOW; 4397 $$->next = NULL; 4398 $$->tail = $$; 4399 } 4400 | STRING NUMBER { 4401 int i; 4402 4403 if ($2 < 0 || $2 > UINT_MAX) { 4404 yyerror("only positive values permitted"); 4405 YYERROR; 4406 } 4407 for (i = 0; pf_timeouts[i].name && 4408 strcmp(pf_timeouts[i].name, $1); ++i) 4409 ; /* nothing */ 4410 if (!pf_timeouts[i].name) { 4411 yyerror("illegal timeout name %s", $1); 4412 free($1); 4413 YYERROR; 4414 } 4415 if (strchr(pf_timeouts[i].name, '.') == NULL) { 4416 yyerror("illegal state timeout %s", $1); 4417 free($1); 4418 YYERROR; 4419 } 4420 free($1); 4421 $$ = calloc(1, sizeof(struct node_state_opt)); 4422 if ($$ == NULL) 4423 err(1, "state_opt_item: calloc"); 4424 $$->type = PF_STATE_OPT_TIMEOUT; 4425 $$->data.timeout.number = pf_timeouts[i].timeout; 4426 $$->data.timeout.seconds = $2; 4427 $$->next = NULL; 4428 $$->tail = $$; 4429 } 4430 ; 4431 4432 label : LABEL STRING { 4433 $$ = $2; 4434 } 4435 ; 4436 4437 etherqname : QUEUE STRING { 4438 $$.qname = $2; 4439 } 4440 | QUEUE '(' STRING ')' { 4441 $$.qname = $3; 4442 } 4443 ; 4444 4445 qname : QUEUE STRING { 4446 $$.qname = $2; 4447 $$.pqname = NULL; 4448 } 4449 | QUEUE '(' STRING ')' { 4450 $$.qname = $3; 4451 $$.pqname = NULL; 4452 } 4453 | QUEUE '(' STRING comma STRING ')' { 4454 $$.qname = $3; 4455 $$.pqname = $5; 4456 } 4457 ; 4458 4459 no : /* empty */ { $$ = 0; } 4460 | NO { $$ = 1; } 4461 ; 4462 4463 portstar : numberstring { 4464 if (parseport($1, &$$, PPORT_RANGE|PPORT_STAR) == -1) { 4465 free($1); 4466 YYERROR; 4467 } 4468 free($1); 4469 } 4470 ; 4471 4472 redirspec : host { $$ = $1; } 4473 | '{' optnl redir_host_list '}' { $$ = $3; } 4474 ; 4475 4476 redir_host_list : host optnl { $$ = $1; } 4477 | redir_host_list comma host optnl { 4478 $1->tail->next = $3; 4479 $1->tail = $3->tail; 4480 $$ = $1; 4481 } 4482 ; 4483 4484 redirpool : /* empty */ { $$ = NULL; } 4485 | ARROW redirspec { 4486 $$ = calloc(1, sizeof(struct redirection)); 4487 if ($$ == NULL) 4488 err(1, "redirection: calloc"); 4489 $$->host = $2; 4490 $$->rport.a = $$->rport.b = $$->rport.t = 0; 4491 } 4492 | ARROW redirspec PORT portstar { 4493 $$ = calloc(1, sizeof(struct redirection)); 4494 if ($$ == NULL) 4495 err(1, "redirection: calloc"); 4496 $$->host = $2; 4497 $$->rport = $4; 4498 } 4499 ; 4500 4501 hashkey : /* empty */ 4502 { 4503 $$ = calloc(1, sizeof(struct pf_poolhashkey)); 4504 if ($$ == NULL) 4505 err(1, "hashkey: calloc"); 4506 $$->key32[0] = arc4random(); 4507 $$->key32[1] = arc4random(); 4508 $$->key32[2] = arc4random(); 4509 $$->key32[3] = arc4random(); 4510 } 4511 | string 4512 { 4513 if (!strncmp($1, "0x", 2)) { 4514 if (strlen($1) != 34) { 4515 free($1); 4516 yyerror("hex key must be 128 bits " 4517 "(32 hex digits) long"); 4518 YYERROR; 4519 } 4520 $$ = calloc(1, sizeof(struct pf_poolhashkey)); 4521 if ($$ == NULL) 4522 err(1, "hashkey: calloc"); 4523 4524 if (sscanf($1, "0x%8x%8x%8x%8x", 4525 &$$->key32[0], &$$->key32[1], 4526 &$$->key32[2], &$$->key32[3]) != 4) { 4527 free($$); 4528 free($1); 4529 yyerror("invalid hex key"); 4530 YYERROR; 4531 } 4532 } else { 4533 MD5_CTX context; 4534 4535 $$ = calloc(1, sizeof(struct pf_poolhashkey)); 4536 if ($$ == NULL) 4537 err(1, "hashkey: calloc"); 4538 MD5Init(&context); 4539 MD5Update(&context, (unsigned char *)$1, 4540 strlen($1)); 4541 MD5Final((unsigned char *)$$, &context); 4542 HTONL($$->key32[0]); 4543 HTONL($$->key32[1]); 4544 HTONL($$->key32[2]); 4545 HTONL($$->key32[3]); 4546 } 4547 free($1); 4548 } 4549 ; 4550 4551 pool_opts : { bzero(&pool_opts, sizeof pool_opts); } 4552 pool_opts_l 4553 { $$ = pool_opts; } 4554 | /* empty */ { 4555 bzero(&pool_opts, sizeof pool_opts); 4556 $$ = pool_opts; 4557 } 4558 ; 4559 4560 pool_opts_l : pool_opts_l pool_opt 4561 | pool_opt 4562 ; 4563 4564 pool_opt : BITMASK { 4565 if (pool_opts.type) { 4566 yyerror("pool type cannot be redefined"); 4567 YYERROR; 4568 } 4569 pool_opts.type = PF_POOL_BITMASK; 4570 } 4571 | RANDOM { 4572 if (pool_opts.type) { 4573 yyerror("pool type cannot be redefined"); 4574 YYERROR; 4575 } 4576 pool_opts.type = PF_POOL_RANDOM; 4577 } 4578 | SOURCEHASH hashkey { 4579 if (pool_opts.type) { 4580 yyerror("pool type cannot be redefined"); 4581 YYERROR; 4582 } 4583 pool_opts.type = PF_POOL_SRCHASH; 4584 pool_opts.key = $2; 4585 } 4586 | ROUNDROBIN { 4587 if (pool_opts.type) { 4588 yyerror("pool type cannot be redefined"); 4589 YYERROR; 4590 } 4591 pool_opts.type = PF_POOL_ROUNDROBIN; 4592 } 4593 | STATICPORT { 4594 if (pool_opts.staticport) { 4595 yyerror("static-port cannot be redefined"); 4596 YYERROR; 4597 } 4598 pool_opts.staticport = 1; 4599 } 4600 | STICKYADDRESS { 4601 if (pool_opts.marker & POM_STICKYADDRESS) { 4602 yyerror("sticky-address cannot be redefined"); 4603 YYERROR; 4604 } 4605 pool_opts.marker |= POM_STICKYADDRESS; 4606 pool_opts.opts |= PF_POOL_STICKYADDR; 4607 } 4608 | ENDPI { 4609 if (pool_opts.marker & POM_ENDPI) { 4610 yyerror("endpoint-independent cannot be redefined"); 4611 YYERROR; 4612 } 4613 pool_opts.marker |= POM_ENDPI; 4614 pool_opts.opts |= PF_POOL_ENDPI; 4615 } 4616 | MAPEPORTSET number '/' number '/' number { 4617 if (pool_opts.mape.offset) { 4618 yyerror("map-e-portset cannot be redefined"); 4619 YYERROR; 4620 } 4621 if (pool_opts.type) { 4622 yyerror("map-e-portset cannot be used with " 4623 "address pools"); 4624 YYERROR; 4625 } 4626 if ($2 <= 0 || $2 >= 16) { 4627 yyerror("MAP-E PSID offset must be 1-15"); 4628 YYERROR; 4629 } 4630 if ($4 < 0 || $4 >= 16 || $2 + $4 > 16) { 4631 yyerror("Invalid MAP-E PSID length"); 4632 YYERROR; 4633 } else if ($4 == 0) { 4634 yyerror("PSID Length = 0: this means" 4635 " you do not need MAP-E"); 4636 YYERROR; 4637 } 4638 if ($6 < 0 || $6 > 65535) { 4639 yyerror("Invalid MAP-E PSID"); 4640 YYERROR; 4641 } 4642 pool_opts.mape.offset = $2; 4643 pool_opts.mape.psidlen = $4; 4644 pool_opts.mape.psid = $6; 4645 } 4646 ; 4647 4648 redirection : /* empty */ { $$ = NULL; } 4649 | ARROW host { 4650 $$ = calloc(1, sizeof(struct redirection)); 4651 if ($$ == NULL) 4652 err(1, "redirection: calloc"); 4653 $$->host = $2; 4654 $$->rport.a = $$->rport.b = $$->rport.t = 0; 4655 } 4656 | ARROW host PORT portstar { 4657 $$ = calloc(1, sizeof(struct redirection)); 4658 if ($$ == NULL) 4659 err(1, "redirection: calloc"); 4660 $$->host = $2; 4661 $$->rport = $4; 4662 } 4663 ; 4664 4665 natpasslog : /* empty */ { $$.b1 = $$.b2 = 0; $$.w2 = 0; } 4666 | PASS { $$.b1 = 1; $$.b2 = 0; $$.w2 = 0; } 4667 | PASS log { $$.b1 = 1; $$.b2 = $2.log; $$.w2 = $2.logif; } 4668 | log { $$.b1 = 0; $$.b2 = $1.log; $$.w2 = $1.logif; } 4669 ; 4670 4671 nataction : no NAT natpasslog { 4672 if ($1 && $3.b1) { 4673 yyerror("\"pass\" not valid with \"no\""); 4674 YYERROR; 4675 } 4676 if ($1) 4677 $$.b1 = PF_NONAT; 4678 else 4679 $$.b1 = PF_NAT; 4680 $$.b2 = $3.b1; 4681 $$.w = $3.b2; 4682 $$.w2 = $3.w2; 4683 } 4684 | no RDR natpasslog { 4685 if ($1 && $3.b1) { 4686 yyerror("\"pass\" not valid with \"no\""); 4687 YYERROR; 4688 } 4689 if ($1) 4690 $$.b1 = PF_NORDR; 4691 else 4692 $$.b1 = PF_RDR; 4693 $$.b2 = $3.b1; 4694 $$.w = $3.b2; 4695 $$.w2 = $3.w2; 4696 } 4697 ; 4698 4699 natrule : nataction interface af proto fromto tag tagged rtable 4700 redirpool pool_opts 4701 { 4702 struct pfctl_rule r; 4703 struct node_state_opt *o; 4704 4705 if (check_rulestate(PFCTL_STATE_NAT)) 4706 YYERROR; 4707 4708 memset(&r, 0, sizeof(r)); 4709 4710 r.action = $1.b1; 4711 r.natpass = $1.b2; 4712 r.log = $1.w; 4713 r.logif = $1.w2; 4714 r.af = $3; 4715 4716 if (!r.af) { 4717 if ($5.src.host && $5.src.host->af && 4718 !$5.src.host->ifindex) 4719 r.af = $5.src.host->af; 4720 else if ($5.dst.host && $5.dst.host->af && 4721 !$5.dst.host->ifindex) 4722 r.af = $5.dst.host->af; 4723 } 4724 4725 if ($6 != NULL) 4726 if (strlcpy(r.tagname, $6, PF_TAG_NAME_SIZE) >= 4727 PF_TAG_NAME_SIZE) { 4728 yyerror("tag too long, max %u chars", 4729 PF_TAG_NAME_SIZE - 1); 4730 YYERROR; 4731 } 4732 4733 if ($7.name) 4734 if (strlcpy(r.match_tagname, $7.name, 4735 PF_TAG_NAME_SIZE) >= PF_TAG_NAME_SIZE) { 4736 yyerror("tag too long, max %u chars", 4737 PF_TAG_NAME_SIZE - 1); 4738 YYERROR; 4739 } 4740 r.match_tag_not = $7.neg; 4741 r.rtableid = $8; 4742 4743 if (r.action == PF_NONAT || r.action == PF_NORDR) { 4744 if ($9 != NULL) { 4745 yyerror("translation rule with 'no' " 4746 "does not need '->'"); 4747 YYERROR; 4748 } 4749 } else { 4750 if ($9 == NULL || $9->host == NULL) { 4751 yyerror("translation rule requires '-> " 4752 "address'"); 4753 YYERROR; 4754 } 4755 if (!r.af && ! $9->host->ifindex) 4756 r.af = $9->host->af; 4757 4758 remove_invalid_hosts(&$9->host, &r.af); 4759 if (invalid_redirect($9->host, r.af)) 4760 YYERROR; 4761 if ($9->host->addr.type == PF_ADDR_DYNIFTL) { 4762 if (($9->host = gen_dynnode($9->host, r.af)) == NULL) 4763 err(1, "calloc"); 4764 } 4765 if (check_netmask($9->host, r.af)) 4766 YYERROR; 4767 4768 r.rpool.proxy_port[0] = ntohs($9->rport.a); 4769 4770 switch (r.action) { 4771 case PF_RDR: 4772 if (!$9->rport.b && $9->rport.t && 4773 $5.dst.port != NULL) { 4774 r.rpool.proxy_port[1] = 4775 ntohs($9->rport.a) + 4776 (ntohs( 4777 $5.dst.port->port[1]) - 4778 ntohs( 4779 $5.dst.port->port[0])); 4780 } else 4781 r.rpool.proxy_port[1] = 4782 ntohs($9->rport.b); 4783 break; 4784 case PF_NAT: 4785 r.rpool.proxy_port[1] = 4786 ntohs($9->rport.b); 4787 if (!r.rpool.proxy_port[0] && 4788 !r.rpool.proxy_port[1]) { 4789 r.rpool.proxy_port[0] = 4790 PF_NAT_PROXY_PORT_LOW; 4791 r.rpool.proxy_port[1] = 4792 PF_NAT_PROXY_PORT_HIGH; 4793 } else if (!r.rpool.proxy_port[1]) 4794 r.rpool.proxy_port[1] = 4795 r.rpool.proxy_port[0]; 4796 break; 4797 default: 4798 break; 4799 } 4800 4801 r.rpool.opts = $10.type; 4802 if ((r.rpool.opts & PF_POOL_TYPEMASK) == 4803 PF_POOL_NONE && ($9->host->next != NULL || 4804 $9->host->addr.type == PF_ADDR_TABLE || 4805 DYNIF_MULTIADDR($9->host->addr))) 4806 r.rpool.opts = PF_POOL_ROUNDROBIN; 4807 if ((r.rpool.opts & PF_POOL_TYPEMASK) != 4808 PF_POOL_ROUNDROBIN && 4809 disallow_table($9->host, "tables are only " 4810 "supported in round-robin redirection " 4811 "pools")) 4812 YYERROR; 4813 if ((r.rpool.opts & PF_POOL_TYPEMASK) != 4814 PF_POOL_ROUNDROBIN && 4815 disallow_alias($9->host, "interface (%s) " 4816 "is only supported in round-robin " 4817 "redirection pools")) 4818 YYERROR; 4819 if ($9->host->next != NULL) { 4820 if ((r.rpool.opts & PF_POOL_TYPEMASK) != 4821 PF_POOL_ROUNDROBIN) { 4822 yyerror("only round-robin " 4823 "valid for multiple " 4824 "redirection addresses"); 4825 YYERROR; 4826 } 4827 } 4828 } 4829 4830 if ($10.key != NULL) 4831 memcpy(&r.rpool.key, $10.key, 4832 sizeof(struct pf_poolhashkey)); 4833 4834 if ($10.opts) 4835 r.rpool.opts |= $10.opts; 4836 4837 if ($10.staticport) { 4838 if (r.action != PF_NAT) { 4839 yyerror("the 'static-port' option is " 4840 "only valid with nat rules"); 4841 YYERROR; 4842 } 4843 if (r.rpool.proxy_port[0] != 4844 PF_NAT_PROXY_PORT_LOW && 4845 r.rpool.proxy_port[1] != 4846 PF_NAT_PROXY_PORT_HIGH) { 4847 yyerror("the 'static-port' option can't" 4848 " be used when specifying a port" 4849 " range"); 4850 YYERROR; 4851 } 4852 r.rpool.proxy_port[0] = 0; 4853 r.rpool.proxy_port[1] = 0; 4854 } 4855 4856 if ($10.mape.offset) { 4857 if (r.action != PF_NAT) { 4858 yyerror("the 'map-e-portset' option is" 4859 " only valid with nat rules"); 4860 YYERROR; 4861 } 4862 if ($10.staticport) { 4863 yyerror("the 'map-e-portset' option" 4864 " can't be used 'static-port'"); 4865 YYERROR; 4866 } 4867 if (r.rpool.proxy_port[0] != 4868 PF_NAT_PROXY_PORT_LOW && 4869 r.rpool.proxy_port[1] != 4870 PF_NAT_PROXY_PORT_HIGH) { 4871 yyerror("the 'map-e-portset' option" 4872 " can't be used when specifying" 4873 " a port range"); 4874 YYERROR; 4875 } 4876 r.rpool.mape = $10.mape; 4877 } 4878 4879 o = keep_state_defaults; 4880 while (o) { 4881 switch (o->type) { 4882 case PF_STATE_OPT_PFLOW: 4883 if (r.rule_flag & PFRULE_PFLOW) { 4884 yyerror("state pflow option: " 4885 "multiple definitions"); 4886 YYERROR; 4887 } 4888 r.rule_flag |= PFRULE_PFLOW; 4889 break; 4890 } 4891 o = o->next; 4892 } 4893 4894 expand_rule(&r, $2, $9 == NULL ? NULL : $9->host, $4, 4895 $5.src_os, $5.src.host, $5.src.port, $5.dst.host, 4896 $5.dst.port, 0, 0, 0, 0, ""); 4897 free($9); 4898 } 4899 ; 4900 4901 binatrule : no BINAT natpasslog interface af proto FROM ipspec toipspec tag 4902 tagged rtable redirection 4903 { 4904 struct pfctl_rule binat; 4905 struct pf_pooladdr *pa; 4906 4907 if (check_rulestate(PFCTL_STATE_NAT)) 4908 YYERROR; 4909 if (disallow_urpf_failed($9, "\"urpf-failed\" is not " 4910 "permitted as a binat destination")) 4911 YYERROR; 4912 4913 memset(&binat, 0, sizeof(binat)); 4914 4915 if ($1 && $3.b1) { 4916 yyerror("\"pass\" not valid with \"no\""); 4917 YYERROR; 4918 } 4919 if ($1) 4920 binat.action = PF_NOBINAT; 4921 else 4922 binat.action = PF_BINAT; 4923 binat.natpass = $3.b1; 4924 binat.log = $3.b2; 4925 binat.logif = $3.w2; 4926 binat.af = $5; 4927 if (!binat.af && $8 != NULL && $8->af) 4928 binat.af = $8->af; 4929 if (!binat.af && $9 != NULL && $9->af) 4930 binat.af = $9->af; 4931 4932 if (!binat.af && $13 != NULL && $13->host) 4933 binat.af = $13->host->af; 4934 if (!binat.af) { 4935 yyerror("address family (inet/inet6) " 4936 "undefined"); 4937 YYERROR; 4938 } 4939 4940 if ($4 != NULL) { 4941 memcpy(binat.ifname, $4->ifname, 4942 sizeof(binat.ifname)); 4943 binat.ifnot = $4->not; 4944 free($4); 4945 } 4946 4947 if ($10 != NULL) 4948 if (strlcpy(binat.tagname, $10, 4949 PF_TAG_NAME_SIZE) >= PF_TAG_NAME_SIZE) { 4950 yyerror("tag too long, max %u chars", 4951 PF_TAG_NAME_SIZE - 1); 4952 YYERROR; 4953 } 4954 if ($11.name) 4955 if (strlcpy(binat.match_tagname, $11.name, 4956 PF_TAG_NAME_SIZE) >= PF_TAG_NAME_SIZE) { 4957 yyerror("tag too long, max %u chars", 4958 PF_TAG_NAME_SIZE - 1); 4959 YYERROR; 4960 } 4961 binat.match_tag_not = $11.neg; 4962 binat.rtableid = $12; 4963 4964 if ($6 != NULL) { 4965 binat.proto = $6->proto; 4966 free($6); 4967 } 4968 4969 if ($8 != NULL && disallow_table($8, "invalid use of " 4970 "table <%s> as the source address of a binat rule")) 4971 YYERROR; 4972 if ($8 != NULL && disallow_alias($8, "invalid use of " 4973 "interface (%s) as the source address of a binat " 4974 "rule")) 4975 YYERROR; 4976 if ($13 != NULL && $13->host != NULL && disallow_table( 4977 $13->host, "invalid use of table <%s> as the " 4978 "redirect address of a binat rule")) 4979 YYERROR; 4980 if ($13 != NULL && $13->host != NULL && disallow_alias( 4981 $13->host, "invalid use of interface (%s) as the " 4982 "redirect address of a binat rule")) 4983 YYERROR; 4984 4985 if ($8 != NULL) { 4986 if ($8->next) { 4987 yyerror("multiple binat ip addresses"); 4988 YYERROR; 4989 } 4990 if ($8->addr.type == PF_ADDR_DYNIFTL) 4991 $8->af = binat.af; 4992 if ($8->af != binat.af) { 4993 yyerror("binat ip versions must match"); 4994 YYERROR; 4995 } 4996 if ($8->addr.type == PF_ADDR_DYNIFTL) { 4997 if (($8 = gen_dynnode($8, binat.af)) == NULL) 4998 err(1, "calloc"); 4999 } 5000 if (check_netmask($8, binat.af)) 5001 YYERROR; 5002 memcpy(&binat.src.addr, &$8->addr, 5003 sizeof(binat.src.addr)); 5004 free($8); 5005 } 5006 if ($9 != NULL) { 5007 if ($9->next) { 5008 yyerror("multiple binat ip addresses"); 5009 YYERROR; 5010 } 5011 if ($9->af != binat.af && $9->af) { 5012 yyerror("binat ip versions must match"); 5013 YYERROR; 5014 } 5015 if ($9->addr.type == PF_ADDR_DYNIFTL) { 5016 if (($9 = gen_dynnode($9, binat.af)) == NULL) 5017 err(1, "calloc"); 5018 } 5019 if (check_netmask($9, binat.af)) 5020 YYERROR; 5021 memcpy(&binat.dst.addr, &$9->addr, 5022 sizeof(binat.dst.addr)); 5023 binat.dst.neg = $9->not; 5024 free($9); 5025 } 5026 5027 if (binat.action == PF_NOBINAT) { 5028 if ($13 != NULL) { 5029 yyerror("'no binat' rule does not need" 5030 " '->'"); 5031 YYERROR; 5032 } 5033 } else { 5034 if ($13 == NULL || $13->host == NULL) { 5035 yyerror("'binat' rule requires" 5036 " '-> address'"); 5037 YYERROR; 5038 } 5039 5040 remove_invalid_hosts(&$13->host, &binat.af); 5041 if (invalid_redirect($13->host, binat.af)) 5042 YYERROR; 5043 if ($13->host->next != NULL) { 5044 yyerror("binat rule must redirect to " 5045 "a single address"); 5046 YYERROR; 5047 } 5048 if ($13->host->addr.type == PF_ADDR_DYNIFTL) { 5049 if (($13->host = gen_dynnode($13->host, binat.af)) == NULL) 5050 err(1, "calloc"); 5051 } 5052 if (check_netmask($13->host, binat.af)) 5053 YYERROR; 5054 5055 if (!PF_AZERO(&binat.src.addr.v.a.mask, 5056 binat.af) && 5057 !PF_AEQ(&binat.src.addr.v.a.mask, 5058 &$13->host->addr.v.a.mask, binat.af)) { 5059 yyerror("'binat' source mask and " 5060 "redirect mask must be the same"); 5061 YYERROR; 5062 } 5063 5064 TAILQ_INIT(&binat.rpool.list); 5065 pa = calloc(1, sizeof(struct pf_pooladdr)); 5066 if (pa == NULL) 5067 err(1, "binat: calloc"); 5068 pa->addr = $13->host->addr; 5069 pa->ifname[0] = 0; 5070 TAILQ_INSERT_TAIL(&binat.rpool.list, 5071 pa, entries); 5072 5073 free($13); 5074 } 5075 5076 pfctl_append_rule(pf, &binat, ""); 5077 } 5078 ; 5079 5080 tag : /* empty */ { $$ = NULL; } 5081 | TAG STRING { $$ = $2; } 5082 ; 5083 5084 tagged : /* empty */ { $$.neg = 0; $$.name = NULL; } 5085 | not TAGGED string { $$.neg = $1; $$.name = $3; } 5086 ; 5087 5088 rtable : /* empty */ { $$ = -1; } 5089 | RTABLE NUMBER { 5090 if ($2 < 0 || $2 > rt_tableid_max()) { 5091 yyerror("invalid rtable id"); 5092 YYERROR; 5093 } 5094 $$ = $2; 5095 } 5096 ; 5097 5098 route_host : STRING { 5099 $$ = calloc(1, sizeof(struct node_host)); 5100 if ($$ == NULL) 5101 err(1, "route_host: calloc"); 5102 if (strlen($1) >= IFNAMSIZ) { 5103 yyerror("interface name too long"); 5104 YYERROR; 5105 } 5106 $$->ifname = strdup($1); 5107 set_ipmask($$, 128); 5108 $$->next = NULL; 5109 $$->tail = $$; 5110 } 5111 | '(' STRING host ')' { 5112 struct node_host *n; 5113 5114 $$ = $3; 5115 for (n = $3; n != NULL; n = n->next) { 5116 if (strlen($2) >= IFNAMSIZ) { 5117 yyerror("interface name too long"); 5118 YYERROR; 5119 } 5120 n->ifname = strdup($2); 5121 } 5122 } 5123 ; 5124 5125 route_host_list : route_host optnl { $$ = $1; } 5126 | route_host_list comma route_host optnl { 5127 if ($1->af == 0) 5128 $1->af = $3->af; 5129 if ($1->af != $3->af) { 5130 yyerror("all pool addresses must be in the " 5131 "same address family"); 5132 YYERROR; 5133 } 5134 $1->tail->next = $3; 5135 $1->tail = $3->tail; 5136 $$ = $1; 5137 } 5138 ; 5139 5140 routespec : route_host { $$ = $1; } 5141 | '{' optnl route_host_list '}' { $$ = $3; } 5142 ; 5143 5144 route : /* empty */ { 5145 $$.host = NULL; 5146 $$.rt = 0; 5147 $$.pool_opts = 0; 5148 } 5149 | FASTROUTE { 5150 /* backwards-compat */ 5151 $$.host = NULL; 5152 $$.rt = 0; 5153 $$.pool_opts = 0; 5154 } 5155 | ROUTETO routespec pool_opts { 5156 $$.host = $2; 5157 $$.rt = PF_ROUTETO; 5158 $$.pool_opts = $3.type | $3.opts; 5159 if ($3.key != NULL) 5160 $$.key = $3.key; 5161 } 5162 | REPLYTO routespec pool_opts { 5163 $$.host = $2; 5164 $$.rt = PF_REPLYTO; 5165 $$.pool_opts = $3.type | $3.opts; 5166 if ($3.key != NULL) 5167 $$.key = $3.key; 5168 } 5169 | DUPTO routespec pool_opts { 5170 $$.host = $2; 5171 $$.rt = PF_DUPTO; 5172 $$.pool_opts = $3.type | $3.opts; 5173 if ($3.key != NULL) 5174 $$.key = $3.key; 5175 } 5176 ; 5177 5178 timeout_spec : STRING NUMBER 5179 { 5180 if (check_rulestate(PFCTL_STATE_OPTION)) { 5181 free($1); 5182 YYERROR; 5183 } 5184 if ($2 < 0 || $2 > UINT_MAX) { 5185 yyerror("only positive values permitted"); 5186 YYERROR; 5187 } 5188 if (pfctl_apply_timeout(pf, $1, $2, 0) != 0) { 5189 yyerror("unknown timeout %s", $1); 5190 free($1); 5191 YYERROR; 5192 } 5193 free($1); 5194 } 5195 | INTERVAL NUMBER { 5196 if (check_rulestate(PFCTL_STATE_OPTION)) 5197 YYERROR; 5198 if ($2 < 0 || $2 > UINT_MAX) { 5199 yyerror("only positive values permitted"); 5200 YYERROR; 5201 } 5202 if (pfctl_apply_timeout(pf, "interval", $2, 0) != 0) 5203 YYERROR; 5204 } 5205 ; 5206 5207 timeout_list : timeout_list comma timeout_spec optnl 5208 | timeout_spec optnl 5209 ; 5210 5211 limit_spec : STRING NUMBER 5212 { 5213 if (check_rulestate(PFCTL_STATE_OPTION)) { 5214 free($1); 5215 YYERROR; 5216 } 5217 if ($2 < 0 || $2 > UINT_MAX) { 5218 yyerror("only positive values permitted"); 5219 YYERROR; 5220 } 5221 if (pfctl_apply_limit(pf, $1, $2) != 0) { 5222 yyerror("unable to set limit %s %u", $1, $2); 5223 free($1); 5224 YYERROR; 5225 } 5226 free($1); 5227 } 5228 ; 5229 5230 limit_list : limit_list comma limit_spec optnl 5231 | limit_spec optnl 5232 ; 5233 5234 comma : ',' 5235 | /* empty */ 5236 ; 5237 5238 yesno : NO { $$ = 0; } 5239 | STRING { 5240 if (!strcmp($1, "yes")) 5241 $$ = 1; 5242 else { 5243 yyerror("invalid value '%s', expected 'yes' " 5244 "or 'no'", $1); 5245 free($1); 5246 YYERROR; 5247 } 5248 free($1); 5249 } 5250 ; 5251 5252 unaryop : '=' { $$ = PF_OP_EQ; } 5253 | NE { $$ = PF_OP_NE; } 5254 | LE { $$ = PF_OP_LE; } 5255 | '<' { $$ = PF_OP_LT; } 5256 | GE { $$ = PF_OP_GE; } 5257 | '>' { $$ = PF_OP_GT; } 5258 ; 5259 5260 %% 5261 5262 int 5263 yyerror(const char *fmt, ...) 5264 { 5265 va_list ap; 5266 5267 file->errors++; 5268 va_start(ap, fmt); 5269 fprintf(stderr, "%s:%d: ", file->name, yylval.lineno); 5270 vfprintf(stderr, fmt, ap); 5271 fprintf(stderr, "\n"); 5272 va_end(ap); 5273 return (0); 5274 } 5275 5276 int 5277 disallow_table(struct node_host *h, const char *fmt) 5278 { 5279 for (; h != NULL; h = h->next) 5280 if (h->addr.type == PF_ADDR_TABLE) { 5281 yyerror(fmt, h->addr.v.tblname); 5282 return (1); 5283 } 5284 return (0); 5285 } 5286 5287 int 5288 disallow_urpf_failed(struct node_host *h, const char *fmt) 5289 { 5290 for (; h != NULL; h = h->next) 5291 if (h->addr.type == PF_ADDR_URPFFAILED) { 5292 yyerror(fmt); 5293 return (1); 5294 } 5295 return (0); 5296 } 5297 5298 int 5299 disallow_alias(struct node_host *h, const char *fmt) 5300 { 5301 for (; h != NULL; h = h->next) 5302 if (DYNIF_MULTIADDR(h->addr)) { 5303 yyerror(fmt, h->addr.v.tblname); 5304 return (1); 5305 } 5306 return (0); 5307 } 5308 5309 int 5310 rule_consistent(struct pfctl_rule *r, int anchor_call) 5311 { 5312 int problems = 0; 5313 5314 switch (r->action) { 5315 case PF_PASS: 5316 case PF_MATCH: 5317 case PF_DROP: 5318 case PF_SCRUB: 5319 case PF_NOSCRUB: 5320 problems = filter_consistent(r, anchor_call); 5321 break; 5322 case PF_NAT: 5323 case PF_NONAT: 5324 problems = nat_consistent(r); 5325 break; 5326 case PF_RDR: 5327 case PF_NORDR: 5328 problems = rdr_consistent(r); 5329 break; 5330 case PF_BINAT: 5331 case PF_NOBINAT: 5332 default: 5333 break; 5334 } 5335 return (problems); 5336 } 5337 5338 int 5339 filter_consistent(struct pfctl_rule *r, int anchor_call) 5340 { 5341 int problems = 0; 5342 5343 if (r->proto != IPPROTO_TCP && r->proto != IPPROTO_UDP && 5344 r->proto != IPPROTO_SCTP && 5345 (r->src.port_op || r->dst.port_op)) { 5346 yyerror("port only applies to tcp/udp/sctp"); 5347 problems++; 5348 } 5349 if (r->proto != IPPROTO_ICMP && r->proto != IPPROTO_ICMPV6 && 5350 (r->type || r->code)) { 5351 yyerror("icmp-type/code only applies to icmp"); 5352 problems++; 5353 } 5354 if (!r->af && (r->type || r->code)) { 5355 yyerror("must indicate address family with icmp-type/code"); 5356 problems++; 5357 } 5358 if (r->overload_tblname[0] && 5359 r->max_src_conn == 0 && r->max_src_conn_rate.seconds == 0) { 5360 yyerror("'overload' requires 'max-src-conn' " 5361 "or 'max-src-conn-rate'"); 5362 problems++; 5363 } 5364 if ((r->proto == IPPROTO_ICMP && r->af == AF_INET6) || 5365 (r->proto == IPPROTO_ICMPV6 && r->af == AF_INET)) { 5366 yyerror("proto %s doesn't match address family %s", 5367 r->proto == IPPROTO_ICMP ? "icmp" : "icmp6", 5368 r->af == AF_INET ? "inet" : "inet6"); 5369 problems++; 5370 } 5371 if (r->allow_opts && r->action != PF_PASS) { 5372 yyerror("allow-opts can only be specified for pass rules"); 5373 problems++; 5374 } 5375 if (r->rule_flag & PFRULE_FRAGMENT && (r->src.port_op || 5376 r->dst.port_op || r->flagset || r->type || r->code)) { 5377 yyerror("fragments can be filtered only on IP header fields"); 5378 problems++; 5379 } 5380 if (r->rule_flag & PFRULE_RETURNRST && r->proto != IPPROTO_TCP) { 5381 yyerror("return-rst can only be applied to TCP rules"); 5382 problems++; 5383 } 5384 if (r->max_src_nodes && !(r->rule_flag & PFRULE_RULESRCTRACK)) { 5385 yyerror("max-src-nodes requires 'source-track rule'"); 5386 problems++; 5387 } 5388 if (r->action != PF_PASS && r->keep_state) { 5389 yyerror("keep state is great, but only for pass rules"); 5390 problems++; 5391 } 5392 if (r->rule_flag & PFRULE_STATESLOPPY && 5393 (r->keep_state == PF_STATE_MODULATE || 5394 r->keep_state == PF_STATE_SYNPROXY)) { 5395 yyerror("sloppy state matching cannot be used with " 5396 "synproxy state or modulate state"); 5397 problems++; 5398 } 5399 /* match rules rules */ 5400 if (r->action == PF_MATCH) { 5401 if (r->divert.port) { 5402 yyerror("divert is not supported on match rules"); 5403 problems++; 5404 } 5405 if (r->rt) { 5406 yyerror("route-to, reply-to, dup-to and fastroute " 5407 "must not be used on match rules"); 5408 problems++; 5409 } 5410 } 5411 if (r->rpool.opts & PF_POOL_STICKYADDR && !r->keep_state) { 5412 yyerror("'sticky-address' requires 'keep state'"); 5413 problems++; 5414 } 5415 return (-problems); 5416 } 5417 5418 int 5419 nat_consistent(struct pfctl_rule *r) 5420 { 5421 return (0); /* yeah! */ 5422 } 5423 5424 int 5425 rdr_consistent(struct pfctl_rule *r) 5426 { 5427 int problems = 0; 5428 5429 if (r->proto != IPPROTO_TCP && r->proto != IPPROTO_UDP && 5430 r->proto != IPPROTO_SCTP) { 5431 if (r->src.port_op) { 5432 yyerror("src port only applies to tcp/udp/sctp"); 5433 problems++; 5434 } 5435 if (r->dst.port_op) { 5436 yyerror("dst port only applies to tcp/udp/sctp"); 5437 problems++; 5438 } 5439 if (r->rpool.proxy_port[0]) { 5440 yyerror("rpool port only applies to tcp/udp/sctp"); 5441 problems++; 5442 } 5443 } 5444 if (r->dst.port_op && 5445 r->dst.port_op != PF_OP_EQ && r->dst.port_op != PF_OP_RRG) { 5446 yyerror("invalid port operator for rdr destination port"); 5447 problems++; 5448 } 5449 return (-problems); 5450 } 5451 5452 int 5453 process_tabledef(char *name, struct table_opts *opts) 5454 { 5455 struct pfr_buffer ab; 5456 struct node_tinit *ti; 5457 unsigned long maxcount; 5458 size_t s = sizeof(maxcount); 5459 5460 bzero(&ab, sizeof(ab)); 5461 ab.pfrb_type = PFRB_ADDRS; 5462 SIMPLEQ_FOREACH(ti, &opts->init_nodes, entries) { 5463 if (ti->file) 5464 if (pfr_buf_load(&ab, ti->file, 0, append_addr)) { 5465 if (errno) 5466 yyerror("cannot load \"%s\": %s", 5467 ti->file, strerror(errno)); 5468 else 5469 yyerror("file \"%s\" contains bad data", 5470 ti->file); 5471 goto _error; 5472 } 5473 if (ti->host) 5474 if (append_addr_host(&ab, ti->host, 0, 0)) { 5475 yyerror("cannot create address buffer: %s", 5476 strerror(errno)); 5477 goto _error; 5478 } 5479 } 5480 if (pf->opts & PF_OPT_VERBOSE) 5481 print_tabledef(name, opts->flags, opts->init_addr, 5482 &opts->init_nodes); 5483 if (!(pf->opts & PF_OPT_NOACTION) && 5484 pfctl_define_table(name, opts->flags, opts->init_addr, 5485 pf->anchor->name, &ab, pf->anchor->ruleset.tticket)) { 5486 5487 if (sysctlbyname("net.pf.request_maxcount", &maxcount, &s, 5488 NULL, 0) == -1) 5489 maxcount = 65535; 5490 5491 if (ab.pfrb_size > maxcount) 5492 yyerror("cannot define table %s: too many elements.\n" 5493 "Consider increasing net.pf.request_maxcount.", 5494 name); 5495 else 5496 yyerror("cannot define table %s: %s", name, 5497 pfr_strerror(errno)); 5498 5499 goto _error; 5500 } 5501 pf->tdirty = 1; 5502 pfr_buf_clear(&ab); 5503 return (0); 5504 _error: 5505 pfr_buf_clear(&ab); 5506 return (-1); 5507 } 5508 5509 struct keywords { 5510 const char *k_name; 5511 int k_val; 5512 }; 5513 5514 /* macro gore, but you should've seen the prior indentation nightmare... */ 5515 5516 #define FREE_LIST(T,r) \ 5517 do { \ 5518 T *p, *node = r; \ 5519 while (node != NULL) { \ 5520 p = node; \ 5521 node = node->next; \ 5522 free(p); \ 5523 } \ 5524 } while (0) 5525 5526 #define LOOP_THROUGH(T,n,r,C) \ 5527 do { \ 5528 T *n; \ 5529 if (r == NULL) { \ 5530 r = calloc(1, sizeof(T)); \ 5531 if (r == NULL) \ 5532 err(1, "LOOP: calloc"); \ 5533 r->next = NULL; \ 5534 } \ 5535 n = r; \ 5536 while (n != NULL) { \ 5537 do { \ 5538 C; \ 5539 } while (0); \ 5540 n = n->next; \ 5541 } \ 5542 } while (0) 5543 5544 void 5545 expand_label_str(char *label, size_t len, const char *srch, const char *repl) 5546 { 5547 char *tmp; 5548 char *p, *q; 5549 5550 if ((tmp = calloc(1, len)) == NULL) 5551 err(1, "expand_label_str: calloc"); 5552 p = q = label; 5553 while ((q = strstr(p, srch)) != NULL) { 5554 *q = '\0'; 5555 if ((strlcat(tmp, p, len) >= len) || 5556 (strlcat(tmp, repl, len) >= len)) 5557 errx(1, "expand_label: label too long"); 5558 q += strlen(srch); 5559 p = q; 5560 } 5561 if (strlcat(tmp, p, len) >= len) 5562 errx(1, "expand_label: label too long"); 5563 strlcpy(label, tmp, len); /* always fits */ 5564 free(tmp); 5565 } 5566 5567 void 5568 expand_label_if(const char *name, char *label, size_t len, const char *ifname) 5569 { 5570 if (strstr(label, name) != NULL) { 5571 if (!*ifname) 5572 expand_label_str(label, len, name, "any"); 5573 else 5574 expand_label_str(label, len, name, ifname); 5575 } 5576 } 5577 5578 void 5579 expand_label_addr(const char *name, char *label, size_t len, sa_family_t af, 5580 struct pf_rule_addr *addr) 5581 { 5582 char tmp[64], tmp_not[66]; 5583 5584 if (strstr(label, name) != NULL) { 5585 switch (addr->addr.type) { 5586 case PF_ADDR_DYNIFTL: 5587 snprintf(tmp, sizeof(tmp), "(%s)", addr->addr.v.ifname); 5588 break; 5589 case PF_ADDR_TABLE: 5590 snprintf(tmp, sizeof(tmp), "<%s>", addr->addr.v.tblname); 5591 break; 5592 case PF_ADDR_NOROUTE: 5593 snprintf(tmp, sizeof(tmp), "no-route"); 5594 break; 5595 case PF_ADDR_URPFFAILED: 5596 snprintf(tmp, sizeof(tmp), "urpf-failed"); 5597 break; 5598 case PF_ADDR_ADDRMASK: 5599 if (!af || (PF_AZERO(&addr->addr.v.a.addr, af) && 5600 PF_AZERO(&addr->addr.v.a.mask, af))) 5601 snprintf(tmp, sizeof(tmp), "any"); 5602 else { 5603 char a[48]; 5604 int bits; 5605 5606 if (inet_ntop(af, &addr->addr.v.a.addr, a, 5607 sizeof(a)) == NULL) 5608 snprintf(tmp, sizeof(tmp), "?"); 5609 else { 5610 bits = unmask(&addr->addr.v.a.mask, af); 5611 if ((af == AF_INET && bits < 32) || 5612 (af == AF_INET6 && bits < 128)) 5613 snprintf(tmp, sizeof(tmp), 5614 "%s/%d", a, bits); 5615 else 5616 snprintf(tmp, sizeof(tmp), 5617 "%s", a); 5618 } 5619 } 5620 break; 5621 default: 5622 snprintf(tmp, sizeof(tmp), "?"); 5623 break; 5624 } 5625 5626 if (addr->neg) { 5627 snprintf(tmp_not, sizeof(tmp_not), "! %s", tmp); 5628 expand_label_str(label, len, name, tmp_not); 5629 } else 5630 expand_label_str(label, len, name, tmp); 5631 } 5632 } 5633 5634 void 5635 expand_label_port(const char *name, char *label, size_t len, 5636 struct pf_rule_addr *addr) 5637 { 5638 char a1[6], a2[6], op[13] = ""; 5639 5640 if (strstr(label, name) != NULL) { 5641 snprintf(a1, sizeof(a1), "%u", ntohs(addr->port[0])); 5642 snprintf(a2, sizeof(a2), "%u", ntohs(addr->port[1])); 5643 if (!addr->port_op) 5644 ; 5645 else if (addr->port_op == PF_OP_IRG) 5646 snprintf(op, sizeof(op), "%s><%s", a1, a2); 5647 else if (addr->port_op == PF_OP_XRG) 5648 snprintf(op, sizeof(op), "%s<>%s", a1, a2); 5649 else if (addr->port_op == PF_OP_EQ) 5650 snprintf(op, sizeof(op), "%s", a1); 5651 else if (addr->port_op == PF_OP_NE) 5652 snprintf(op, sizeof(op), "!=%s", a1); 5653 else if (addr->port_op == PF_OP_LT) 5654 snprintf(op, sizeof(op), "<%s", a1); 5655 else if (addr->port_op == PF_OP_LE) 5656 snprintf(op, sizeof(op), "<=%s", a1); 5657 else if (addr->port_op == PF_OP_GT) 5658 snprintf(op, sizeof(op), ">%s", a1); 5659 else if (addr->port_op == PF_OP_GE) 5660 snprintf(op, sizeof(op), ">=%s", a1); 5661 expand_label_str(label, len, name, op); 5662 } 5663 } 5664 5665 void 5666 expand_label_proto(const char *name, char *label, size_t len, u_int8_t proto) 5667 { 5668 const char *protoname; 5669 char n[4]; 5670 5671 if (strstr(label, name) != NULL) { 5672 protoname = pfctl_proto2name(proto); 5673 if (protoname != NULL) 5674 expand_label_str(label, len, name, protoname); 5675 else { 5676 snprintf(n, sizeof(n), "%u", proto); 5677 expand_label_str(label, len, name, n); 5678 } 5679 } 5680 } 5681 5682 void 5683 expand_label_nr(const char *name, char *label, size_t len, 5684 struct pfctl_rule *r) 5685 { 5686 char n[11]; 5687 5688 if (strstr(label, name) != NULL) { 5689 snprintf(n, sizeof(n), "%u", r->nr); 5690 expand_label_str(label, len, name, n); 5691 } 5692 } 5693 5694 void 5695 expand_label(char *label, size_t len, struct pfctl_rule *r) 5696 { 5697 expand_label_if("$if", label, len, r->ifname); 5698 expand_label_addr("$srcaddr", label, len, r->af, &r->src); 5699 expand_label_addr("$dstaddr", label, len, r->af, &r->dst); 5700 expand_label_port("$srcport", label, len, &r->src); 5701 expand_label_port("$dstport", label, len, &r->dst); 5702 expand_label_proto("$proto", label, len, r->proto); 5703 expand_label_nr("$nr", label, len, r); 5704 } 5705 5706 int 5707 expand_altq(struct pf_altq *a, struct node_if *interfaces, 5708 struct node_queue *nqueues, struct node_queue_bw bwspec, 5709 struct node_queue_opt *opts) 5710 { 5711 struct pf_altq pa, pb; 5712 char qname[PF_QNAME_SIZE]; 5713 struct node_queue *n; 5714 struct node_queue_bw bw; 5715 int errs = 0; 5716 5717 if ((pf->loadopt & PFCTL_FLAG_ALTQ) == 0) { 5718 FREE_LIST(struct node_if, interfaces); 5719 if (nqueues) 5720 FREE_LIST(struct node_queue, nqueues); 5721 return (0); 5722 } 5723 5724 LOOP_THROUGH(struct node_if, interface, interfaces, 5725 memcpy(&pa, a, sizeof(struct pf_altq)); 5726 if (strlcpy(pa.ifname, interface->ifname, 5727 sizeof(pa.ifname)) >= sizeof(pa.ifname)) 5728 errx(1, "expand_altq: strlcpy"); 5729 5730 if (interface->not) { 5731 yyerror("altq on ! <interface> is not supported"); 5732 errs++; 5733 } else { 5734 if (eval_pfaltq(pf, &pa, &bwspec, opts)) 5735 errs++; 5736 else 5737 if (pfctl_add_altq(pf, &pa)) 5738 errs++; 5739 5740 if (pf->opts & PF_OPT_VERBOSE) { 5741 print_altq(&pf->paltq->altq, 0, 5742 &bwspec, opts); 5743 if (nqueues && nqueues->tail) { 5744 printf("queue { "); 5745 LOOP_THROUGH(struct node_queue, queue, 5746 nqueues, 5747 printf("%s ", 5748 queue->queue); 5749 ); 5750 printf("}"); 5751 } 5752 printf("\n"); 5753 } 5754 5755 if (pa.scheduler == ALTQT_CBQ || 5756 pa.scheduler == ALTQT_HFSC || 5757 pa.scheduler == ALTQT_FAIRQ) { 5758 /* now create a root queue */ 5759 memset(&pb, 0, sizeof(struct pf_altq)); 5760 if (strlcpy(qname, "root_", sizeof(qname)) >= 5761 sizeof(qname)) 5762 errx(1, "expand_altq: strlcpy"); 5763 if (strlcat(qname, interface->ifname, 5764 sizeof(qname)) >= sizeof(qname)) 5765 errx(1, "expand_altq: strlcat"); 5766 if (strlcpy(pb.qname, qname, 5767 sizeof(pb.qname)) >= sizeof(pb.qname)) 5768 errx(1, "expand_altq: strlcpy"); 5769 if (strlcpy(pb.ifname, interface->ifname, 5770 sizeof(pb.ifname)) >= sizeof(pb.ifname)) 5771 errx(1, "expand_altq: strlcpy"); 5772 pb.qlimit = pa.qlimit; 5773 pb.scheduler = pa.scheduler; 5774 bw.bw_absolute = pa.ifbandwidth; 5775 bw.bw_percent = 0; 5776 if (eval_pfqueue(pf, &pb, &bw, opts)) 5777 errs++; 5778 else 5779 if (pfctl_add_altq(pf, &pb)) 5780 errs++; 5781 } 5782 5783 LOOP_THROUGH(struct node_queue, queue, nqueues, 5784 n = calloc(1, sizeof(struct node_queue)); 5785 if (n == NULL) 5786 err(1, "expand_altq: calloc"); 5787 if (pa.scheduler == ALTQT_CBQ || 5788 pa.scheduler == ALTQT_HFSC || 5789 pa.scheduler == ALTQT_FAIRQ) 5790 if (strlcpy(n->parent, qname, 5791 sizeof(n->parent)) >= 5792 sizeof(n->parent)) 5793 errx(1, "expand_altq: strlcpy"); 5794 if (strlcpy(n->queue, queue->queue, 5795 sizeof(n->queue)) >= sizeof(n->queue)) 5796 errx(1, "expand_altq: strlcpy"); 5797 if (strlcpy(n->ifname, interface->ifname, 5798 sizeof(n->ifname)) >= sizeof(n->ifname)) 5799 errx(1, "expand_altq: strlcpy"); 5800 n->scheduler = pa.scheduler; 5801 n->next = NULL; 5802 n->tail = n; 5803 if (queues == NULL) 5804 queues = n; 5805 else { 5806 queues->tail->next = n; 5807 queues->tail = n; 5808 } 5809 ); 5810 } 5811 ); 5812 FREE_LIST(struct node_if, interfaces); 5813 if (nqueues) 5814 FREE_LIST(struct node_queue, nqueues); 5815 5816 return (errs); 5817 } 5818 5819 int 5820 expand_queue(struct pf_altq *a, struct node_if *interfaces, 5821 struct node_queue *nqueues, struct node_queue_bw bwspec, 5822 struct node_queue_opt *opts) 5823 { 5824 struct node_queue *n, *nq; 5825 struct pf_altq pa; 5826 u_int8_t found = 0; 5827 u_int8_t errs = 0; 5828 5829 if ((pf->loadopt & PFCTL_FLAG_ALTQ) == 0) { 5830 FREE_LIST(struct node_queue, nqueues); 5831 return (0); 5832 } 5833 5834 if (queues == NULL) { 5835 yyerror("queue %s has no parent", a->qname); 5836 FREE_LIST(struct node_queue, nqueues); 5837 return (1); 5838 } 5839 5840 LOOP_THROUGH(struct node_if, interface, interfaces, 5841 LOOP_THROUGH(struct node_queue, tqueue, queues, 5842 if (!strncmp(a->qname, tqueue->queue, PF_QNAME_SIZE) && 5843 (interface->ifname[0] == 0 || 5844 (!interface->not && !strncmp(interface->ifname, 5845 tqueue->ifname, IFNAMSIZ)) || 5846 (interface->not && strncmp(interface->ifname, 5847 tqueue->ifname, IFNAMSIZ)))) { 5848 /* found ourself in queues */ 5849 found++; 5850 5851 memcpy(&pa, a, sizeof(struct pf_altq)); 5852 5853 if (pa.scheduler != ALTQT_NONE && 5854 pa.scheduler != tqueue->scheduler) { 5855 yyerror("exactly one scheduler type " 5856 "per interface allowed"); 5857 return (1); 5858 } 5859 pa.scheduler = tqueue->scheduler; 5860 5861 /* scheduler dependent error checking */ 5862 switch (pa.scheduler) { 5863 case ALTQT_PRIQ: 5864 if (nqueues != NULL) { 5865 yyerror("priq queues cannot " 5866 "have child queues"); 5867 return (1); 5868 } 5869 if (bwspec.bw_absolute > 0 || 5870 bwspec.bw_percent < 100) { 5871 yyerror("priq doesn't take " 5872 "bandwidth"); 5873 return (1); 5874 } 5875 break; 5876 default: 5877 break; 5878 } 5879 5880 if (strlcpy(pa.ifname, tqueue->ifname, 5881 sizeof(pa.ifname)) >= sizeof(pa.ifname)) 5882 errx(1, "expand_queue: strlcpy"); 5883 if (strlcpy(pa.parent, tqueue->parent, 5884 sizeof(pa.parent)) >= sizeof(pa.parent)) 5885 errx(1, "expand_queue: strlcpy"); 5886 5887 if (eval_pfqueue(pf, &pa, &bwspec, opts)) 5888 errs++; 5889 else 5890 if (pfctl_add_altq(pf, &pa)) 5891 errs++; 5892 5893 for (nq = nqueues; nq != NULL; nq = nq->next) { 5894 if (!strcmp(a->qname, nq->queue)) { 5895 yyerror("queue cannot have " 5896 "itself as child"); 5897 errs++; 5898 continue; 5899 } 5900 n = calloc(1, 5901 sizeof(struct node_queue)); 5902 if (n == NULL) 5903 err(1, "expand_queue: calloc"); 5904 if (strlcpy(n->parent, a->qname, 5905 sizeof(n->parent)) >= 5906 sizeof(n->parent)) 5907 errx(1, "expand_queue strlcpy"); 5908 if (strlcpy(n->queue, nq->queue, 5909 sizeof(n->queue)) >= 5910 sizeof(n->queue)) 5911 errx(1, "expand_queue strlcpy"); 5912 if (strlcpy(n->ifname, tqueue->ifname, 5913 sizeof(n->ifname)) >= 5914 sizeof(n->ifname)) 5915 errx(1, "expand_queue strlcpy"); 5916 n->scheduler = tqueue->scheduler; 5917 n->next = NULL; 5918 n->tail = n; 5919 if (queues == NULL) 5920 queues = n; 5921 else { 5922 queues->tail->next = n; 5923 queues->tail = n; 5924 } 5925 } 5926 if ((pf->opts & PF_OPT_VERBOSE) && ( 5927 (found == 1 && interface->ifname[0] == 0) || 5928 (found > 0 && interface->ifname[0] != 0))) { 5929 print_queue(&pf->paltq->altq, 0, 5930 &bwspec, interface->ifname[0] != 0, 5931 opts); 5932 if (nqueues && nqueues->tail) { 5933 printf("{ "); 5934 LOOP_THROUGH(struct node_queue, 5935 queue, nqueues, 5936 printf("%s ", 5937 queue->queue); 5938 ); 5939 printf("}"); 5940 } 5941 printf("\n"); 5942 } 5943 } 5944 ); 5945 ); 5946 5947 FREE_LIST(struct node_queue, nqueues); 5948 FREE_LIST(struct node_if, interfaces); 5949 5950 if (!found) { 5951 yyerror("queue %s has no parent", a->qname); 5952 errs++; 5953 } 5954 5955 if (errs) 5956 return (1); 5957 else 5958 return (0); 5959 } 5960 5961 static int 5962 pf_af_to_proto(sa_family_t af) 5963 { 5964 if (af == AF_INET) 5965 return (ETHERTYPE_IP); 5966 if (af == AF_INET6) 5967 return (ETHERTYPE_IPV6); 5968 5969 return (0); 5970 } 5971 5972 void 5973 expand_eth_rule(struct pfctl_eth_rule *r, 5974 struct node_if *interfaces, struct node_etherproto *protos, 5975 struct node_mac *srcs, struct node_mac *dsts, 5976 struct node_host *ipsrcs, struct node_host *ipdsts, 5977 const char *bridge_to, const char *anchor_call) 5978 { 5979 char tagname[PF_TAG_NAME_SIZE]; 5980 char match_tagname[PF_TAG_NAME_SIZE]; 5981 char qname[PF_QNAME_SIZE]; 5982 5983 if (strlcpy(tagname, r->tagname, sizeof(tagname)) >= sizeof(tagname)) 5984 errx(1, "expand_eth_rule: tagname"); 5985 if (strlcpy(match_tagname, r->match_tagname, sizeof(match_tagname)) >= 5986 sizeof(match_tagname)) 5987 errx(1, "expand_eth_rule: match_tagname"); 5988 if (strlcpy(qname, r->qname, sizeof(qname)) >= sizeof(qname)) 5989 errx(1, "expand_eth_rule: qname"); 5990 5991 LOOP_THROUGH(struct node_if, interface, interfaces, 5992 LOOP_THROUGH(struct node_etherproto, proto, protos, 5993 LOOP_THROUGH(struct node_mac, src, srcs, 5994 LOOP_THROUGH(struct node_mac, dst, dsts, 5995 LOOP_THROUGH(struct node_host, ipsrc, ipsrcs, 5996 LOOP_THROUGH(struct node_host, ipdst, ipdsts, 5997 strlcpy(r->ifname, interface->ifname, 5998 sizeof(r->ifname)); 5999 r->ifnot = interface->not; 6000 r->proto = proto->proto; 6001 if (!r->proto && ipsrc->af) 6002 r->proto = pf_af_to_proto(ipsrc->af); 6003 else if (!r->proto && ipdst->af) 6004 r->proto = pf_af_to_proto(ipdst->af); 6005 bcopy(src->mac, r->src.addr, ETHER_ADDR_LEN); 6006 bcopy(src->mask, r->src.mask, ETHER_ADDR_LEN); 6007 r->src.neg = src->neg; 6008 r->src.isset = src->isset; 6009 r->ipsrc.addr = ipsrc->addr; 6010 r->ipsrc.neg = ipsrc->not; 6011 r->ipdst.addr = ipdst->addr; 6012 r->ipdst.neg = ipdst->not; 6013 bcopy(dst->mac, r->dst.addr, ETHER_ADDR_LEN); 6014 bcopy(dst->mask, r->dst.mask, ETHER_ADDR_LEN); 6015 r->dst.neg = dst->neg; 6016 r->dst.isset = dst->isset; 6017 r->nr = pf->eastack[pf->asd]->match++; 6018 6019 if (strlcpy(r->tagname, tagname, sizeof(r->tagname)) >= 6020 sizeof(r->tagname)) 6021 errx(1, "expand_eth_rule: r->tagname"); 6022 if (strlcpy(r->match_tagname, match_tagname, 6023 sizeof(r->match_tagname)) >= sizeof(r->match_tagname)) 6024 errx(1, "expand_eth_rule: r->match_tagname"); 6025 if (strlcpy(r->qname, qname, sizeof(r->qname)) >= sizeof(r->qname)) 6026 errx(1, "expand_eth_rule: r->qname"); 6027 6028 if (bridge_to) 6029 strlcpy(r->bridge_to, bridge_to, sizeof(r->bridge_to)); 6030 6031 pfctl_append_eth_rule(pf, r, anchor_call); 6032 )))))); 6033 6034 FREE_LIST(struct node_if, interfaces); 6035 FREE_LIST(struct node_etherproto, protos); 6036 FREE_LIST(struct node_mac, srcs); 6037 FREE_LIST(struct node_mac, dsts); 6038 FREE_LIST(struct node_host, ipsrcs); 6039 FREE_LIST(struct node_host, ipdsts); 6040 } 6041 6042 void 6043 expand_rule(struct pfctl_rule *r, 6044 struct node_if *interfaces, struct node_host *rpool_hosts, 6045 struct node_proto *protos, struct node_os *src_oses, 6046 struct node_host *src_hosts, struct node_port *src_ports, 6047 struct node_host *dst_hosts, struct node_port *dst_ports, 6048 struct node_uid *uids, struct node_gid *gids, struct node_if *rcv, 6049 struct node_icmp *icmp_types, const char *anchor_call) 6050 { 6051 sa_family_t af = r->af; 6052 int added = 0, error = 0; 6053 char ifname[IF_NAMESIZE]; 6054 char label[PF_RULE_MAX_LABEL_COUNT][PF_RULE_LABEL_SIZE]; 6055 char tagname[PF_TAG_NAME_SIZE]; 6056 char match_tagname[PF_TAG_NAME_SIZE]; 6057 struct pf_pooladdr *pa; 6058 struct node_host *h, *osrch, *odsth; 6059 u_int8_t flags, flagset, keep_state; 6060 6061 memcpy(label, r->label, sizeof(r->label)); 6062 assert(sizeof(r->label) == sizeof(label)); 6063 if (strlcpy(tagname, r->tagname, sizeof(tagname)) >= sizeof(tagname)) 6064 errx(1, "expand_rule: strlcpy"); 6065 if (strlcpy(match_tagname, r->match_tagname, sizeof(match_tagname)) >= 6066 sizeof(match_tagname)) 6067 errx(1, "expand_rule: strlcpy"); 6068 flags = r->flags; 6069 flagset = r->flagset; 6070 keep_state = r->keep_state; 6071 6072 LOOP_THROUGH(struct node_if, interface, interfaces, 6073 LOOP_THROUGH(struct node_proto, proto, protos, 6074 LOOP_THROUGH(struct node_icmp, icmp_type, icmp_types, 6075 LOOP_THROUGH(struct node_host, src_host, src_hosts, 6076 LOOP_THROUGH(struct node_host, dst_host, dst_hosts, 6077 LOOP_THROUGH(struct node_port, src_port, src_ports, 6078 LOOP_THROUGH(struct node_port, dst_port, dst_ports, 6079 LOOP_THROUGH(struct node_os, src_os, src_oses, 6080 LOOP_THROUGH(struct node_uid, uid, uids, 6081 LOOP_THROUGH(struct node_gid, gid, gids, 6082 6083 r->af = af; 6084 /* for link-local IPv6 address, interface must match up */ 6085 if ((r->af && src_host->af && r->af != src_host->af) || 6086 (r->af && dst_host->af && r->af != dst_host->af) || 6087 (src_host->af && dst_host->af && 6088 src_host->af != dst_host->af) || 6089 (src_host->ifindex && dst_host->ifindex && 6090 src_host->ifindex != dst_host->ifindex) || 6091 (src_host->ifindex && *interface->ifname && 6092 src_host->ifindex != if_nametoindex(interface->ifname)) || 6093 (dst_host->ifindex && *interface->ifname && 6094 dst_host->ifindex != if_nametoindex(interface->ifname))) 6095 continue; 6096 if (!r->af && src_host->af) 6097 r->af = src_host->af; 6098 else if (!r->af && dst_host->af) 6099 r->af = dst_host->af; 6100 6101 if (*interface->ifname) 6102 strlcpy(r->ifname, interface->ifname, 6103 sizeof(r->ifname)); 6104 else if (if_indextoname(src_host->ifindex, ifname)) 6105 strlcpy(r->ifname, ifname, sizeof(r->ifname)); 6106 else if (if_indextoname(dst_host->ifindex, ifname)) 6107 strlcpy(r->ifname, ifname, sizeof(r->ifname)); 6108 else 6109 memset(r->ifname, '\0', sizeof(r->ifname)); 6110 6111 memcpy(r->label, label, sizeof(r->label)); 6112 if (strlcpy(r->tagname, tagname, sizeof(r->tagname)) >= 6113 sizeof(r->tagname)) 6114 errx(1, "expand_rule: strlcpy"); 6115 if (strlcpy(r->match_tagname, match_tagname, 6116 sizeof(r->match_tagname)) >= sizeof(r->match_tagname)) 6117 errx(1, "expand_rule: strlcpy"); 6118 6119 osrch = odsth = NULL; 6120 if (src_host->addr.type == PF_ADDR_DYNIFTL) { 6121 osrch = src_host; 6122 if ((src_host = gen_dynnode(src_host, r->af)) == NULL) 6123 err(1, "expand_rule: calloc"); 6124 } 6125 if (dst_host->addr.type == PF_ADDR_DYNIFTL) { 6126 odsth = dst_host; 6127 if ((dst_host = gen_dynnode(dst_host, r->af)) == NULL) 6128 err(1, "expand_rule: calloc"); 6129 } 6130 6131 error += check_netmask(src_host, r->af); 6132 error += check_netmask(dst_host, r->af); 6133 6134 r->ifnot = interface->not; 6135 r->proto = proto->proto; 6136 r->src.addr = src_host->addr; 6137 r->src.neg = src_host->not; 6138 r->src.port[0] = src_port->port[0]; 6139 r->src.port[1] = src_port->port[1]; 6140 r->src.port_op = src_port->op; 6141 r->dst.addr = dst_host->addr; 6142 r->dst.neg = dst_host->not; 6143 r->dst.port[0] = dst_port->port[0]; 6144 r->dst.port[1] = dst_port->port[1]; 6145 r->dst.port_op = dst_port->op; 6146 r->uid.op = uid->op; 6147 r->uid.uid[0] = uid->uid[0]; 6148 r->uid.uid[1] = uid->uid[1]; 6149 r->gid.op = gid->op; 6150 r->gid.gid[0] = gid->gid[0]; 6151 r->gid.gid[1] = gid->gid[1]; 6152 if (rcv) { 6153 strlcpy(r->rcv_ifname, rcv->ifname, 6154 sizeof(r->rcv_ifname)); 6155 } 6156 r->type = icmp_type->type; 6157 r->code = icmp_type->code; 6158 6159 if ((keep_state == PF_STATE_MODULATE || 6160 keep_state == PF_STATE_SYNPROXY) && 6161 r->proto && r->proto != IPPROTO_TCP) 6162 r->keep_state = PF_STATE_NORMAL; 6163 else 6164 r->keep_state = keep_state; 6165 6166 if (r->proto && r->proto != IPPROTO_TCP) { 6167 r->flags = 0; 6168 r->flagset = 0; 6169 } else { 6170 r->flags = flags; 6171 r->flagset = flagset; 6172 } 6173 if (icmp_type->proto && r->proto != icmp_type->proto) { 6174 yyerror("icmp-type mismatch"); 6175 error++; 6176 } 6177 6178 if (src_os && src_os->os) { 6179 r->os_fingerprint = pfctl_get_fingerprint(src_os->os); 6180 if ((pf->opts & PF_OPT_VERBOSE2) && 6181 r->os_fingerprint == PF_OSFP_NOMATCH) 6182 fprintf(stderr, 6183 "warning: unknown '%s' OS fingerprint\n", 6184 src_os->os); 6185 } else { 6186 r->os_fingerprint = PF_OSFP_ANY; 6187 } 6188 6189 TAILQ_INIT(&r->rpool.list); 6190 for (h = rpool_hosts; h != NULL; h = h->next) { 6191 pa = calloc(1, sizeof(struct pf_pooladdr)); 6192 if (pa == NULL) 6193 err(1, "expand_rule: calloc"); 6194 pa->addr = h->addr; 6195 if (h->ifname != NULL) { 6196 if (strlcpy(pa->ifname, h->ifname, 6197 sizeof(pa->ifname)) >= 6198 sizeof(pa->ifname)) 6199 errx(1, "expand_rule: strlcpy"); 6200 } else 6201 pa->ifname[0] = 0; 6202 TAILQ_INSERT_TAIL(&r->rpool.list, pa, entries); 6203 } 6204 6205 if (rule_consistent(r, anchor_call[0]) < 0 || error) 6206 yyerror("skipping rule due to errors"); 6207 else { 6208 r->nr = pf->astack[pf->asd]->match++; 6209 pfctl_append_rule(pf, r, anchor_call); 6210 added++; 6211 } 6212 6213 if (osrch && src_host->addr.type == PF_ADDR_DYNIFTL) { 6214 free(src_host); 6215 src_host = osrch; 6216 } 6217 if (odsth && dst_host->addr.type == PF_ADDR_DYNIFTL) { 6218 free(dst_host); 6219 dst_host = odsth; 6220 } 6221 6222 )))))))))); 6223 6224 FREE_LIST(struct node_if, interfaces); 6225 FREE_LIST(struct node_proto, protos); 6226 FREE_LIST(struct node_host, src_hosts); 6227 FREE_LIST(struct node_port, src_ports); 6228 FREE_LIST(struct node_os, src_oses); 6229 FREE_LIST(struct node_host, dst_hosts); 6230 FREE_LIST(struct node_port, dst_ports); 6231 FREE_LIST(struct node_uid, uids); 6232 FREE_LIST(struct node_gid, gids); 6233 FREE_LIST(struct node_icmp, icmp_types); 6234 FREE_LIST(struct node_host, rpool_hosts); 6235 6236 if (!added) 6237 yyerror("rule expands to no valid combination"); 6238 } 6239 6240 int 6241 expand_skip_interface(struct node_if *interfaces) 6242 { 6243 int errs = 0; 6244 6245 if (!interfaces || (!interfaces->next && !interfaces->not && 6246 !strcmp(interfaces->ifname, "none"))) { 6247 if (pf->opts & PF_OPT_VERBOSE) 6248 printf("set skip on none\n"); 6249 errs = pfctl_set_interface_flags(pf, "", PFI_IFLAG_SKIP, 0); 6250 return (errs); 6251 } 6252 6253 if (pf->opts & PF_OPT_VERBOSE) 6254 printf("set skip on {"); 6255 LOOP_THROUGH(struct node_if, interface, interfaces, 6256 if (pf->opts & PF_OPT_VERBOSE) 6257 printf(" %s", interface->ifname); 6258 if (interface->not) { 6259 yyerror("skip on ! <interface> is not supported"); 6260 errs++; 6261 } else 6262 errs += pfctl_set_interface_flags(pf, 6263 interface->ifname, PFI_IFLAG_SKIP, 1); 6264 ); 6265 if (pf->opts & PF_OPT_VERBOSE) 6266 printf(" }\n"); 6267 6268 FREE_LIST(struct node_if, interfaces); 6269 6270 if (errs) 6271 return (1); 6272 else 6273 return (0); 6274 } 6275 6276 void 6277 freehostlist(struct node_host *h) 6278 { 6279 FREE_LIST(struct node_host, h); 6280 } 6281 6282 #undef FREE_LIST 6283 #undef LOOP_THROUGH 6284 6285 int 6286 check_rulestate(int desired_state) 6287 { 6288 if (require_order && (rulestate > desired_state)) { 6289 yyerror("Rules must be in order: options, ethernet, " 6290 "normalization, queueing, translation, filtering"); 6291 return (1); 6292 } 6293 rulestate = desired_state; 6294 return (0); 6295 } 6296 6297 int 6298 kw_cmp(const void *k, const void *e) 6299 { 6300 return (strcmp(k, ((const struct keywords *)e)->k_name)); 6301 } 6302 6303 int 6304 lookup(char *s) 6305 { 6306 /* this has to be sorted always */ 6307 static const struct keywords keywords[] = { 6308 { "all", ALL}, 6309 { "allow-opts", ALLOWOPTS}, 6310 { "altq", ALTQ}, 6311 { "anchor", ANCHOR}, 6312 { "antispoof", ANTISPOOF}, 6313 { "any", ANY}, 6314 { "bandwidth", BANDWIDTH}, 6315 { "binat", BINAT}, 6316 { "binat-anchor", BINATANCHOR}, 6317 { "bitmask", BITMASK}, 6318 { "block", BLOCK}, 6319 { "block-policy", BLOCKPOLICY}, 6320 { "bridge-to", BRIDGE_TO}, 6321 { "buckets", BUCKETS}, 6322 { "cbq", CBQ}, 6323 { "code", CODE}, 6324 { "codelq", CODEL}, 6325 { "debug", DEBUG}, 6326 { "divert-reply", DIVERTREPLY}, 6327 { "divert-to", DIVERTTO}, 6328 { "dnpipe", DNPIPE}, 6329 { "dnqueue", DNQUEUE}, 6330 { "drop", DROP}, 6331 { "dup-to", DUPTO}, 6332 { "endpoint-independent", ENDPI}, 6333 { "ether", ETHER}, 6334 { "fail-policy", FAILPOLICY}, 6335 { "fairq", FAIRQ}, 6336 { "fastroute", FASTROUTE}, 6337 { "file", FILENAME}, 6338 { "fingerprints", FINGERPRINTS}, 6339 { "flags", FLAGS}, 6340 { "floating", FLOATING}, 6341 { "flush", FLUSH}, 6342 { "for", FOR}, 6343 { "fragment", FRAGMENT}, 6344 { "from", FROM}, 6345 { "global", GLOBAL}, 6346 { "group", GROUP}, 6347 { "hfsc", HFSC}, 6348 { "hogs", HOGS}, 6349 { "hostid", HOSTID}, 6350 { "icmp-type", ICMPTYPE}, 6351 { "icmp6-type", ICMP6TYPE}, 6352 { "if-bound", IFBOUND}, 6353 { "in", IN}, 6354 { "include", INCLUDE}, 6355 { "inet", INET}, 6356 { "inet6", INET6}, 6357 { "interval", INTERVAL}, 6358 { "keep", KEEP}, 6359 { "keepcounters", KEEPCOUNTERS}, 6360 { "l3", L3}, 6361 { "label", LABEL}, 6362 { "limit", LIMIT}, 6363 { "linkshare", LINKSHARE}, 6364 { "load", LOAD}, 6365 { "log", LOG}, 6366 { "loginterface", LOGINTERFACE}, 6367 { "map-e-portset", MAPEPORTSET}, 6368 { "match", MATCH}, 6369 { "matches", MATCHES}, 6370 { "max", MAXIMUM}, 6371 { "max-mss", MAXMSS}, 6372 { "max-src-conn", MAXSRCCONN}, 6373 { "max-src-conn-rate", MAXSRCCONNRATE}, 6374 { "max-src-nodes", MAXSRCNODES}, 6375 { "max-src-states", MAXSRCSTATES}, 6376 { "min-ttl", MINTTL}, 6377 { "modulate", MODULATE}, 6378 { "nat", NAT}, 6379 { "nat-anchor", NATANCHOR}, 6380 { "no", NO}, 6381 { "no-df", NODF}, 6382 { "no-route", NOROUTE}, 6383 { "no-sync", NOSYNC}, 6384 { "on", ON}, 6385 { "optimization", OPTIMIZATION}, 6386 { "os", OS}, 6387 { "out", OUT}, 6388 { "overload", OVERLOAD}, 6389 { "pass", PASS}, 6390 { "pflow", PFLOW}, 6391 { "port", PORT}, 6392 { "prio", PRIO}, 6393 { "priority", PRIORITY}, 6394 { "priq", PRIQ}, 6395 { "probability", PROBABILITY}, 6396 { "proto", PROTO}, 6397 { "qlimit", QLIMIT}, 6398 { "queue", QUEUE}, 6399 { "quick", QUICK}, 6400 { "random", RANDOM}, 6401 { "random-id", RANDOMID}, 6402 { "rdr", RDR}, 6403 { "rdr-anchor", RDRANCHOR}, 6404 { "realtime", REALTIME}, 6405 { "reassemble", REASSEMBLE}, 6406 { "received-on", RECEIVEDON}, 6407 { "reply-to", REPLYTO}, 6408 { "require-order", REQUIREORDER}, 6409 { "return", RETURN}, 6410 { "return-icmp", RETURNICMP}, 6411 { "return-icmp6", RETURNICMP6}, 6412 { "return-rst", RETURNRST}, 6413 { "ridentifier", RIDENTIFIER}, 6414 { "round-robin", ROUNDROBIN}, 6415 { "route", ROUTE}, 6416 { "route-to", ROUTETO}, 6417 { "rtable", RTABLE}, 6418 { "rule", RULE}, 6419 { "ruleset-optimization", RULESET_OPTIMIZATION}, 6420 { "scrub", SCRUB}, 6421 { "set", SET}, 6422 { "set-tos", SETTOS}, 6423 { "skip", SKIP}, 6424 { "sloppy", SLOPPY}, 6425 { "source-hash", SOURCEHASH}, 6426 { "source-track", SOURCETRACK}, 6427 { "state", STATE}, 6428 { "state-defaults", STATEDEFAULTS}, 6429 { "state-policy", STATEPOLICY}, 6430 { "static-port", STATICPORT}, 6431 { "sticky-address", STICKYADDRESS}, 6432 { "syncookies", SYNCOOKIES}, 6433 { "synproxy", SYNPROXY}, 6434 { "table", TABLE}, 6435 { "tag", TAG}, 6436 { "tagged", TAGGED}, 6437 { "target", TARGET}, 6438 { "tbrsize", TBRSIZE}, 6439 { "timeout", TIMEOUT}, 6440 { "to", TO}, 6441 { "tos", TOS}, 6442 { "ttl", TTL}, 6443 { "upperlimit", UPPERLIMIT}, 6444 { "urpf-failed", URPFFAILED}, 6445 { "user", USER}, 6446 }; 6447 const struct keywords *p; 6448 6449 p = bsearch(s, keywords, sizeof(keywords)/sizeof(keywords[0]), 6450 sizeof(keywords[0]), kw_cmp); 6451 6452 if (p) { 6453 if (debug > 1) 6454 fprintf(stderr, "%s: %d\n", s, p->k_val); 6455 return (p->k_val); 6456 } else { 6457 if (debug > 1) 6458 fprintf(stderr, "string: %s\n", s); 6459 return (STRING); 6460 } 6461 } 6462 6463 #define MAXPUSHBACK 128 6464 6465 static char *parsebuf; 6466 static int parseindex; 6467 static char pushback_buffer[MAXPUSHBACK]; 6468 static int pushback_index = 0; 6469 6470 int 6471 lgetc(int quotec) 6472 { 6473 int c, next; 6474 6475 if (parsebuf) { 6476 /* Read character from the parsebuffer instead of input. */ 6477 if (parseindex >= 0) { 6478 c = parsebuf[parseindex++]; 6479 if (c != '\0') 6480 return (c); 6481 parsebuf = NULL; 6482 } else 6483 parseindex++; 6484 } 6485 6486 if (pushback_index) 6487 return (pushback_buffer[--pushback_index]); 6488 6489 if (quotec) { 6490 if ((c = getc(file->stream)) == EOF) { 6491 yyerror("reached end of file while parsing quoted string"); 6492 if (popfile() == EOF) 6493 return (EOF); 6494 return (quotec); 6495 } 6496 return (c); 6497 } 6498 6499 while ((c = getc(file->stream)) == '\\') { 6500 next = getc(file->stream); 6501 if (next != '\n') { 6502 c = next; 6503 break; 6504 } 6505 yylval.lineno = file->lineno; 6506 file->lineno++; 6507 } 6508 6509 while (c == EOF) { 6510 if (popfile() == EOF) 6511 return (EOF); 6512 c = getc(file->stream); 6513 } 6514 return (c); 6515 } 6516 6517 int 6518 lungetc(int c) 6519 { 6520 if (c == EOF) 6521 return (EOF); 6522 if (parsebuf) { 6523 parseindex--; 6524 if (parseindex >= 0) 6525 return (c); 6526 } 6527 if (pushback_index < MAXPUSHBACK-1) 6528 return (pushback_buffer[pushback_index++] = c); 6529 else 6530 return (EOF); 6531 } 6532 6533 int 6534 findeol(void) 6535 { 6536 int c; 6537 6538 parsebuf = NULL; 6539 6540 /* skip to either EOF or the first real EOL */ 6541 while (1) { 6542 if (pushback_index) 6543 c = pushback_buffer[--pushback_index]; 6544 else 6545 c = lgetc(0); 6546 if (c == '\n') { 6547 file->lineno++; 6548 break; 6549 } 6550 if (c == EOF) 6551 break; 6552 } 6553 return (ERROR); 6554 } 6555 6556 int 6557 yylex(void) 6558 { 6559 char buf[8096]; 6560 char *p, *val; 6561 int quotec, next, c; 6562 int token; 6563 6564 top: 6565 p = buf; 6566 while ((c = lgetc(0)) == ' ' || c == '\t') 6567 ; /* nothing */ 6568 6569 yylval.lineno = file->lineno; 6570 if (c == '#') 6571 while ((c = lgetc(0)) != '\n' && c != EOF) 6572 ; /* nothing */ 6573 if (c == '$' && parsebuf == NULL) { 6574 while (1) { 6575 if ((c = lgetc(0)) == EOF) 6576 return (0); 6577 6578 if (p + 1 >= buf + sizeof(buf) - 1) { 6579 yyerror("string too long"); 6580 return (findeol()); 6581 } 6582 if (isalnum(c) || c == '_') { 6583 *p++ = (char)c; 6584 continue; 6585 } 6586 *p = '\0'; 6587 lungetc(c); 6588 break; 6589 } 6590 val = symget(buf); 6591 if (val == NULL) { 6592 yyerror("macro '%s' not defined", buf); 6593 return (findeol()); 6594 } 6595 parsebuf = val; 6596 parseindex = 0; 6597 goto top; 6598 } 6599 6600 switch (c) { 6601 case '\'': 6602 case '"': 6603 quotec = c; 6604 while (1) { 6605 if ((c = lgetc(quotec)) == EOF) 6606 return (0); 6607 if (c == '\n') { 6608 file->lineno++; 6609 continue; 6610 } else if (c == '\\') { 6611 if ((next = lgetc(quotec)) == EOF) 6612 return (0); 6613 if (next == quotec || c == ' ' || c == '\t') 6614 c = next; 6615 else if (next == '\n') { 6616 file->lineno++; 6617 continue; 6618 } 6619 else 6620 lungetc(next); 6621 } else if (c == quotec) { 6622 *p = '\0'; 6623 break; 6624 } 6625 if (p + 1 >= buf + sizeof(buf) - 1) { 6626 yyerror("string too long"); 6627 return (findeol()); 6628 } 6629 *p++ = (char)c; 6630 } 6631 yylval.v.string = strdup(buf); 6632 if (yylval.v.string == NULL) 6633 err(1, "yylex: strdup"); 6634 return (STRING); 6635 case '!': 6636 next = lgetc(0); 6637 if (next == '=') 6638 return (NE); 6639 lungetc(next); 6640 break; 6641 case '<': 6642 next = lgetc(0); 6643 if (next == '>') { 6644 yylval.v.i = PF_OP_XRG; 6645 return (PORTBINARY); 6646 } else if (next == '=') 6647 return (LE); 6648 lungetc(next); 6649 break; 6650 case '>': 6651 next = lgetc(0); 6652 if (next == '<') { 6653 yylval.v.i = PF_OP_IRG; 6654 return (PORTBINARY); 6655 } else if (next == '=') 6656 return (GE); 6657 lungetc(next); 6658 break; 6659 case '-': 6660 next = lgetc(0); 6661 if (next == '>') 6662 return (ARROW); 6663 lungetc(next); 6664 break; 6665 } 6666 6667 #define allowed_to_end_number(x) \ 6668 (isspace(x) || x == ')' || x ==',' || x == '/' || x == '}' || x == '=') 6669 6670 if (c == '-' || isdigit(c)) { 6671 do { 6672 *p++ = c; 6673 if ((unsigned)(p-buf) >= sizeof(buf)) { 6674 yyerror("string too long"); 6675 return (findeol()); 6676 } 6677 } while ((c = lgetc(0)) != EOF && isdigit(c)); 6678 lungetc(c); 6679 if (p == buf + 1 && buf[0] == '-') 6680 goto nodigits; 6681 if (c == EOF || allowed_to_end_number(c)) { 6682 const char *errstr = NULL; 6683 6684 *p = '\0'; 6685 yylval.v.number = strtonum(buf, LLONG_MIN, 6686 LLONG_MAX, &errstr); 6687 if (errstr) { 6688 yyerror("\"%s\" invalid number: %s", 6689 buf, errstr); 6690 return (findeol()); 6691 } 6692 return (NUMBER); 6693 } else { 6694 nodigits: 6695 while (p > buf + 1) 6696 lungetc(*--p); 6697 c = *--p; 6698 if (c == '-') 6699 return (c); 6700 } 6701 } 6702 6703 #define allowed_in_string(x) \ 6704 (isalnum(x) || (ispunct(x) && x != '(' && x != ')' && \ 6705 x != '{' && x != '}' && x != '<' && x != '>' && \ 6706 x != '!' && x != '=' && x != '/' && x != '#' && \ 6707 x != ',')) 6708 6709 if (isalnum(c) || c == ':' || c == '_') { 6710 do { 6711 *p++ = c; 6712 if ((unsigned)(p-buf) >= sizeof(buf)) { 6713 yyerror("string too long"); 6714 return (findeol()); 6715 } 6716 } while ((c = lgetc(0)) != EOF && (allowed_in_string(c))); 6717 lungetc(c); 6718 *p = '\0'; 6719 if ((token = lookup(buf)) == STRING) 6720 if ((yylval.v.string = strdup(buf)) == NULL) 6721 err(1, "yylex: strdup"); 6722 return (token); 6723 } 6724 if (c == '\n') { 6725 yylval.lineno = file->lineno; 6726 file->lineno++; 6727 } 6728 if (c == EOF) 6729 return (0); 6730 return (c); 6731 } 6732 6733 int 6734 check_file_secrecy(int fd, const char *fname) 6735 { 6736 struct stat st; 6737 6738 if (fstat(fd, &st)) { 6739 warn("cannot stat %s", fname); 6740 return (-1); 6741 } 6742 if (st.st_uid != 0 && st.st_uid != getuid()) { 6743 warnx("%s: owner not root or current user", fname); 6744 return (-1); 6745 } 6746 if (st.st_mode & (S_IRWXG | S_IRWXO)) { 6747 warnx("%s: group/world readable/writeable", fname); 6748 return (-1); 6749 } 6750 return (0); 6751 } 6752 6753 struct file * 6754 pushfile(const char *name, int secret) 6755 { 6756 struct file *nfile; 6757 6758 if ((nfile = calloc(1, sizeof(struct file))) == NULL || 6759 (nfile->name = strdup(name)) == NULL) { 6760 warn("malloc"); 6761 return (NULL); 6762 } 6763 if (TAILQ_FIRST(&files) == NULL && strcmp(nfile->name, "-") == 0) { 6764 nfile->stream = stdin; 6765 free(nfile->name); 6766 if ((nfile->name = strdup("stdin")) == NULL) { 6767 warn("strdup"); 6768 free(nfile); 6769 return (NULL); 6770 } 6771 } else if ((nfile->stream = fopen(nfile->name, "r")) == NULL) { 6772 warn("%s", nfile->name); 6773 free(nfile->name); 6774 free(nfile); 6775 return (NULL); 6776 } else if (secret && 6777 check_file_secrecy(fileno(nfile->stream), nfile->name)) { 6778 fclose(nfile->stream); 6779 free(nfile->name); 6780 free(nfile); 6781 return (NULL); 6782 } 6783 nfile->lineno = 1; 6784 TAILQ_INSERT_TAIL(&files, nfile, entry); 6785 return (nfile); 6786 } 6787 6788 int 6789 popfile(void) 6790 { 6791 struct file *prev; 6792 6793 if ((prev = TAILQ_PREV(file, files, entry)) != NULL) { 6794 prev->errors += file->errors; 6795 TAILQ_REMOVE(&files, file, entry); 6796 fclose(file->stream); 6797 free(file->name); 6798 free(file); 6799 file = prev; 6800 return (0); 6801 } 6802 return (EOF); 6803 } 6804 6805 int 6806 parse_config(char *filename, struct pfctl *xpf) 6807 { 6808 int errors = 0; 6809 struct sym *sym; 6810 6811 pf = xpf; 6812 errors = 0; 6813 rulestate = PFCTL_STATE_NONE; 6814 returnicmpdefault = (ICMP_UNREACH << 8) | ICMP_UNREACH_PORT; 6815 returnicmp6default = 6816 (ICMP6_DST_UNREACH << 8) | ICMP6_DST_UNREACH_NOPORT; 6817 blockpolicy = PFRULE_DROP; 6818 failpolicy = PFRULE_DROP; 6819 require_order = 1; 6820 6821 if ((file = pushfile(filename, 0)) == NULL) { 6822 warn("cannot open the main config file!"); 6823 return (-1); 6824 } 6825 6826 yyparse(); 6827 errors = file->errors; 6828 popfile(); 6829 6830 /* Free macros and check which have not been used. */ 6831 while ((sym = TAILQ_FIRST(&symhead))) { 6832 if ((pf->opts & PF_OPT_VERBOSE2) && !sym->used) 6833 fprintf(stderr, "warning: macro '%s' not " 6834 "used\n", sym->nam); 6835 free(sym->nam); 6836 free(sym->val); 6837 TAILQ_REMOVE(&symhead, sym, entry); 6838 free(sym); 6839 } 6840 6841 return (errors ? -1 : 0); 6842 } 6843 6844 int 6845 symset(const char *nam, const char *val, int persist) 6846 { 6847 struct sym *sym; 6848 6849 for (sym = TAILQ_FIRST(&symhead); sym && strcmp(nam, sym->nam); 6850 sym = TAILQ_NEXT(sym, entry)) 6851 ; /* nothing */ 6852 6853 if (sym != NULL) { 6854 if (sym->persist == 1) 6855 return (0); 6856 else { 6857 free(sym->nam); 6858 free(sym->val); 6859 TAILQ_REMOVE(&symhead, sym, entry); 6860 free(sym); 6861 } 6862 } 6863 if ((sym = calloc(1, sizeof(*sym))) == NULL) 6864 return (-1); 6865 6866 sym->nam = strdup(nam); 6867 if (sym->nam == NULL) { 6868 free(sym); 6869 return (-1); 6870 } 6871 sym->val = strdup(val); 6872 if (sym->val == NULL) { 6873 free(sym->nam); 6874 free(sym); 6875 return (-1); 6876 } 6877 sym->used = 0; 6878 sym->persist = persist; 6879 TAILQ_INSERT_TAIL(&symhead, sym, entry); 6880 return (0); 6881 } 6882 6883 int 6884 pfctl_cmdline_symset(char *s) 6885 { 6886 char *sym, *val; 6887 int ret; 6888 6889 if ((val = strrchr(s, '=')) == NULL) 6890 return (-1); 6891 6892 if ((sym = malloc(strlen(s) - strlen(val) + 1)) == NULL) 6893 err(1, "pfctl_cmdline_symset: malloc"); 6894 6895 strlcpy(sym, s, strlen(s) - strlen(val) + 1); 6896 6897 ret = symset(sym, val + 1, 1); 6898 free(sym); 6899 6900 return (ret); 6901 } 6902 6903 char * 6904 symget(const char *nam) 6905 { 6906 struct sym *sym; 6907 6908 TAILQ_FOREACH(sym, &symhead, entry) 6909 if (strcmp(nam, sym->nam) == 0) { 6910 sym->used = 1; 6911 return (sym->val); 6912 } 6913 return (NULL); 6914 } 6915 6916 void 6917 mv_rules(struct pfctl_ruleset *src, struct pfctl_ruleset *dst) 6918 { 6919 int i; 6920 struct pfctl_rule *r; 6921 6922 for (i = 0; i < PF_RULESET_MAX; ++i) { 6923 while ((r = TAILQ_FIRST(src->rules[i].active.ptr)) 6924 != NULL) { 6925 TAILQ_REMOVE(src->rules[i].active.ptr, r, entries); 6926 TAILQ_INSERT_TAIL(dst->rules[i].active.ptr, r, entries); 6927 dst->anchor->match++; 6928 } 6929 src->anchor->match = 0; 6930 while ((r = TAILQ_FIRST(src->rules[i].inactive.ptr)) 6931 != NULL) { 6932 TAILQ_REMOVE(src->rules[i].inactive.ptr, r, entries); 6933 TAILQ_INSERT_TAIL(dst->rules[i].inactive.ptr, 6934 r, entries); 6935 } 6936 } 6937 } 6938 6939 void 6940 mv_eth_rules(struct pfctl_eth_ruleset *src, struct pfctl_eth_ruleset *dst) 6941 { 6942 struct pfctl_eth_rule *r; 6943 6944 while ((r = TAILQ_FIRST(&src->rules)) != NULL) { 6945 TAILQ_REMOVE(&src->rules, r, entries); 6946 TAILQ_INSERT_TAIL(&dst->rules, r, entries); 6947 dst->anchor->match++; 6948 } 6949 src->anchor->match = 0; 6950 } 6951 6952 void 6953 decide_address_family(struct node_host *n, sa_family_t *af) 6954 { 6955 if (*af != 0 || n == NULL) 6956 return; 6957 *af = n->af; 6958 while ((n = n->next) != NULL) { 6959 if (n->af != *af) { 6960 *af = 0; 6961 return; 6962 } 6963 } 6964 } 6965 6966 void 6967 remove_invalid_hosts(struct node_host **nh, sa_family_t *af) 6968 { 6969 struct node_host *n = *nh, *prev = NULL; 6970 6971 while (n != NULL) { 6972 if (*af && n->af && n->af != *af) { 6973 /* unlink and free n */ 6974 struct node_host *next = n->next; 6975 6976 /* adjust tail pointer */ 6977 if (n == (*nh)->tail) 6978 (*nh)->tail = prev; 6979 /* adjust previous node's next pointer */ 6980 if (prev == NULL) 6981 *nh = next; 6982 else 6983 prev->next = next; 6984 /* free node */ 6985 if (n->ifname != NULL) 6986 free(n->ifname); 6987 free(n); 6988 n = next; 6989 } else { 6990 if (n->af && !*af) 6991 *af = n->af; 6992 prev = n; 6993 n = n->next; 6994 } 6995 } 6996 } 6997 6998 int 6999 invalid_redirect(struct node_host *nh, sa_family_t af) 7000 { 7001 if (!af) { 7002 struct node_host *n; 7003 7004 /* tables and dyniftl are ok without an address family */ 7005 for (n = nh; n != NULL; n = n->next) { 7006 if (n->addr.type != PF_ADDR_TABLE && 7007 n->addr.type != PF_ADDR_DYNIFTL) { 7008 yyerror("address family not given and " 7009 "translation address expands to multiple " 7010 "address families"); 7011 return (1); 7012 } 7013 } 7014 } 7015 if (nh == NULL) { 7016 yyerror("no translation address with matching address family " 7017 "found."); 7018 return (1); 7019 } 7020 return (0); 7021 } 7022 7023 int 7024 atoul(char *s, u_long *ulvalp) 7025 { 7026 u_long ulval; 7027 char *ep; 7028 7029 errno = 0; 7030 ulval = strtoul(s, &ep, 0); 7031 if (s[0] == '\0' || *ep != '\0') 7032 return (-1); 7033 if (errno == ERANGE && ulval == ULONG_MAX) 7034 return (-1); 7035 *ulvalp = ulval; 7036 return (0); 7037 } 7038 7039 int 7040 getservice(char *n) 7041 { 7042 struct servent *s; 7043 u_long ulval; 7044 7045 if (atoul(n, &ulval) == 0) { 7046 if (ulval > 65535) { 7047 yyerror("illegal port value %lu", ulval); 7048 return (-1); 7049 } 7050 return (htons(ulval)); 7051 } else { 7052 s = getservbyname(n, "tcp"); 7053 if (s == NULL) 7054 s = getservbyname(n, "udp"); 7055 if (s == NULL) 7056 s = getservbyname(n, "sctp"); 7057 if (s == NULL) { 7058 yyerror("unknown port %s", n); 7059 return (-1); 7060 } 7061 return (s->s_port); 7062 } 7063 } 7064 7065 int 7066 rule_label(struct pfctl_rule *r, char *s[PF_RULE_MAX_LABEL_COUNT]) 7067 { 7068 for (int i = 0; i < PF_RULE_MAX_LABEL_COUNT; i++) { 7069 if (s[i] == NULL) 7070 return (0); 7071 7072 if (strlcpy(r->label[i], s[i], sizeof(r->label[0])) >= 7073 sizeof(r->label[0])) { 7074 yyerror("rule label too long (max %d chars)", 7075 sizeof(r->label[0])-1); 7076 return (-1); 7077 } 7078 } 7079 return (0); 7080 } 7081 7082 int 7083 eth_rule_label(struct pfctl_eth_rule *r, char *s[PF_RULE_MAX_LABEL_COUNT]) 7084 { 7085 for (int i = 0; i < PF_RULE_MAX_LABEL_COUNT; i++) { 7086 if (s[i] == NULL) 7087 return (0); 7088 7089 if (strlcpy(r->label[i], s[i], sizeof(r->label[0])) >= 7090 sizeof(r->label[0])) { 7091 yyerror("rule label too long (max %d chars)", 7092 sizeof(r->label[0])-1); 7093 return (-1); 7094 } 7095 } 7096 return (0); 7097 } 7098 7099 u_int16_t 7100 parseicmpspec(char *w, sa_family_t af) 7101 { 7102 const struct icmpcodeent *p; 7103 u_long ulval; 7104 u_int8_t icmptype; 7105 7106 if (af == AF_INET) 7107 icmptype = returnicmpdefault >> 8; 7108 else 7109 icmptype = returnicmp6default >> 8; 7110 7111 if (atoul(w, &ulval) == -1) { 7112 if ((p = geticmpcodebyname(icmptype, w, af)) == NULL) { 7113 yyerror("unknown icmp code %s", w); 7114 return (0); 7115 } 7116 ulval = p->code; 7117 } 7118 if (ulval > 255) { 7119 yyerror("invalid icmp code %lu", ulval); 7120 return (0); 7121 } 7122 return (icmptype << 8 | ulval); 7123 } 7124 7125 int 7126 parseport(char *port, struct range *r, int extensions) 7127 { 7128 char *p = strchr(port, ':'); 7129 7130 if (p == NULL) { 7131 if ((r->a = getservice(port)) == -1) 7132 return (-1); 7133 r->b = 0; 7134 r->t = PF_OP_NONE; 7135 return (0); 7136 } 7137 if ((extensions & PPORT_STAR) && !strcmp(p+1, "*")) { 7138 *p = 0; 7139 if ((r->a = getservice(port)) == -1) 7140 return (-1); 7141 r->b = 0; 7142 r->t = PF_OP_IRG; 7143 return (0); 7144 } 7145 if ((extensions & PPORT_RANGE)) { 7146 *p++ = 0; 7147 if ((r->a = getservice(port)) == -1 || 7148 (r->b = getservice(p)) == -1) 7149 return (-1); 7150 if (r->a == r->b) { 7151 r->b = 0; 7152 r->t = PF_OP_NONE; 7153 } else 7154 r->t = PF_OP_RRG; 7155 return (0); 7156 } 7157 return (-1); 7158 } 7159 7160 int 7161 pfctl_load_anchors(int dev, struct pfctl *pf, struct pfr_buffer *trans) 7162 { 7163 struct loadanchors *la; 7164 7165 TAILQ_FOREACH(la, &loadanchorshead, entries) { 7166 if (pf->opts & PF_OPT_VERBOSE) 7167 fprintf(stderr, "\nLoading anchor %s from %s\n", 7168 la->anchorname, la->filename); 7169 if (pfctl_rules(dev, la->filename, pf->opts, pf->optimize, 7170 la->anchorname, trans) == -1) 7171 return (-1); 7172 } 7173 7174 return (0); 7175 } 7176 7177 int 7178 kw_casecmp(const void *k, const void *e) 7179 { 7180 return (strcasecmp(k, ((const struct keywords *)e)->k_name)); 7181 } 7182 7183 int 7184 map_tos(char *s, int *val) 7185 { 7186 /* DiffServ Codepoints and other TOS mappings */ 7187 const struct keywords toswords[] = { 7188 { "af11", IPTOS_DSCP_AF11 }, 7189 { "af12", IPTOS_DSCP_AF12 }, 7190 { "af13", IPTOS_DSCP_AF13 }, 7191 { "af21", IPTOS_DSCP_AF21 }, 7192 { "af22", IPTOS_DSCP_AF22 }, 7193 { "af23", IPTOS_DSCP_AF23 }, 7194 { "af31", IPTOS_DSCP_AF31 }, 7195 { "af32", IPTOS_DSCP_AF32 }, 7196 { "af33", IPTOS_DSCP_AF33 }, 7197 { "af41", IPTOS_DSCP_AF41 }, 7198 { "af42", IPTOS_DSCP_AF42 }, 7199 { "af43", IPTOS_DSCP_AF43 }, 7200 { "critical", IPTOS_PREC_CRITIC_ECP }, 7201 { "cs0", IPTOS_DSCP_CS0 }, 7202 { "cs1", IPTOS_DSCP_CS1 }, 7203 { "cs2", IPTOS_DSCP_CS2 }, 7204 { "cs3", IPTOS_DSCP_CS3 }, 7205 { "cs4", IPTOS_DSCP_CS4 }, 7206 { "cs5", IPTOS_DSCP_CS5 }, 7207 { "cs6", IPTOS_DSCP_CS6 }, 7208 { "cs7", IPTOS_DSCP_CS7 }, 7209 { "ef", IPTOS_DSCP_EF }, 7210 { "inetcontrol", IPTOS_PREC_INTERNETCONTROL }, 7211 { "lowdelay", IPTOS_LOWDELAY }, 7212 { "netcontrol", IPTOS_PREC_NETCONTROL }, 7213 { "reliability", IPTOS_RELIABILITY }, 7214 { "throughput", IPTOS_THROUGHPUT }, 7215 { "va", IPTOS_DSCP_VA } 7216 }; 7217 const struct keywords *p; 7218 7219 p = bsearch(s, toswords, sizeof(toswords)/sizeof(toswords[0]), 7220 sizeof(toswords[0]), kw_casecmp); 7221 7222 if (p) { 7223 *val = p->k_val; 7224 return (1); 7225 } 7226 return (0); 7227 } 7228 7229 int 7230 rt_tableid_max(void) 7231 { 7232 #ifdef __FreeBSD__ 7233 int fibs; 7234 size_t l = sizeof(fibs); 7235 7236 if (sysctlbyname("net.fibs", &fibs, &l, NULL, 0) == -1) 7237 fibs = 16; /* XXX RT_MAXFIBS, at least limit it some. */ 7238 /* 7239 * As the OpenBSD code only compares > and not >= we need to adjust 7240 * here given we only accept values of 0..n and want to avoid #ifdefs 7241 * in the grammar. 7242 */ 7243 return (fibs - 1); 7244 #else 7245 return (RT_TABLEID_MAX); 7246 #endif 7247 } 7248 7249 struct node_mac* 7250 node_mac_from_string(const char *str) 7251 { 7252 struct node_mac *m; 7253 7254 m = calloc(1, sizeof(struct node_mac)); 7255 if (m == NULL) 7256 err(1, "mac: calloc"); 7257 7258 if (sscanf(str, "%02hhx:%02hhx:%02hhx:%02hhx:%02hhx:%02hhx", 7259 &m->mac[0], &m->mac[1], &m->mac[2], &m->mac[3], &m->mac[4], 7260 &m->mac[5]) != 6) { 7261 free(m); 7262 yyerror("invalid MAC address"); 7263 return (NULL); 7264 } 7265 7266 memset(m->mask, 0xff, ETHER_ADDR_LEN); 7267 m->isset = true; 7268 m->next = NULL; 7269 m->tail = m; 7270 7271 return (m); 7272 } 7273 7274 struct node_mac* 7275 node_mac_from_string_masklen(const char *str, int masklen) 7276 { 7277 struct node_mac *m; 7278 7279 if (masklen < 0 || masklen > (ETHER_ADDR_LEN * 8)) { 7280 yyerror("invalid MAC mask length"); 7281 return (NULL); 7282 } 7283 7284 m = node_mac_from_string(str); 7285 if (m == NULL) 7286 return (NULL); 7287 7288 memset(m->mask, 0, ETHER_ADDR_LEN); 7289 for (int i = 0; i < masklen; i++) 7290 m->mask[i / 8] |= 1 << (i % 8); 7291 7292 return (m); 7293 } 7294 7295 struct node_mac* 7296 node_mac_from_string_mask(const char *str, const char *mask) 7297 { 7298 struct node_mac *m; 7299 7300 m = node_mac_from_string(str); 7301 if (m == NULL) 7302 return (NULL); 7303 7304 if (sscanf(mask, "%02hhx:%02hhx:%02hhx:%02hhx:%02hhx:%02hhx", 7305 &m->mask[0], &m->mask[1], &m->mask[2], &m->mask[3], &m->mask[4], 7306 &m->mask[5]) != 6) { 7307 free(m); 7308 yyerror("invalid MAC mask"); 7309 return (NULL); 7310 } 7311 7312 return (m); 7313 } 7314