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 struct range { 226 int a; 227 int b; 228 int t; 229 }; 230 struct redirection { 231 struct node_host *host; 232 struct range rport; 233 }; 234 235 static struct pool_opts { 236 int marker; 237 #define POM_TYPE 0x01 238 #define POM_STICKYADDRESS 0x02 239 #define POM_ENDPI 0x04 240 u_int8_t opts; 241 int type; 242 int staticport; 243 struct pf_poolhashkey *key; 244 struct pf_mape_portset mape; 245 } pool_opts; 246 247 struct redirspec { 248 struct redirection *rdr; 249 struct pool_opts pool_opts; 250 int af; 251 }; 252 253 static struct filter_opts { 254 int marker; 255 #define FOM_FLAGS 0x0001 256 #define FOM_ICMP 0x0002 257 #define FOM_TOS 0x0004 258 #define FOM_KEEP 0x0008 259 #define FOM_SRCTRACK 0x0010 260 #define FOM_MINTTL 0x0020 261 #define FOM_MAXMSS 0x0040 262 #define FOM_AFTO 0x0080 263 #define FOM_SETTOS 0x0100 264 #define FOM_SCRUB_TCP 0x0200 265 #define FOM_SETPRIO 0x0400 266 #define FOM_ONCE 0x1000 /* not yet implemmented */ 267 #define FOM_PRIO 0x2000 268 #define FOM_SETDELAY 0x4000 269 #define FOM_FRAGCACHE 0x8000 /* does not exist in OpenBSD */ 270 struct node_uid *uid; 271 struct node_gid *gid; 272 struct node_if *rcv; 273 struct { 274 u_int8_t b1; 275 u_int8_t b2; 276 u_int16_t w; 277 u_int16_t w2; 278 } flags; 279 struct node_icmp *icmpspec; 280 u_int32_t tos; 281 u_int32_t prob; 282 u_int32_t ridentifier; 283 struct { 284 int action; 285 struct node_state_opt *options; 286 } keep; 287 int fragment; 288 int allowopts; 289 char *label[PF_RULE_MAX_LABEL_COUNT]; 290 int labelcount; 291 struct node_qassign queues; 292 char *tag; 293 char *match_tag; 294 u_int8_t match_tag_not; 295 u_int16_t dnpipe; 296 u_int16_t dnrpipe; 297 u_int32_t free_flags; 298 u_int rtableid; 299 u_int8_t prio; 300 u_int8_t set_prio[2]; 301 struct { 302 struct node_host *addr; 303 u_int16_t port; 304 } divert; 305 struct redirspec nat; 306 struct redirspec rdr; 307 /* new-style scrub opts */ 308 int nodf; 309 int minttl; 310 int settos; 311 int randomid; 312 int max_mss; 313 } filter_opts; 314 315 static struct antispoof_opts { 316 char *label[PF_RULE_MAX_LABEL_COUNT]; 317 int labelcount; 318 u_int32_t ridentifier; 319 u_int rtableid; 320 } antispoof_opts; 321 322 static struct scrub_opts { 323 int marker; 324 int nodf; 325 int minttl; 326 int maxmss; 327 int settos; 328 int fragcache; 329 int randomid; 330 int reassemble_tcp; 331 char *match_tag; 332 u_int8_t match_tag_not; 333 u_int rtableid; 334 } scrub_opts; 335 336 static struct queue_opts { 337 int marker; 338 #define QOM_BWSPEC 0x01 339 #define QOM_SCHEDULER 0x02 340 #define QOM_PRIORITY 0x04 341 #define QOM_TBRSIZE 0x08 342 #define QOM_QLIMIT 0x10 343 struct node_queue_bw queue_bwspec; 344 struct node_queue_opt scheduler; 345 int priority; 346 unsigned int tbrsize; 347 int qlimit; 348 } queue_opts; 349 350 static struct table_opts { 351 int flags; 352 int init_addr; 353 struct node_tinithead init_nodes; 354 } table_opts; 355 356 static struct codel_opts codel_opts; 357 static struct node_hfsc_opts hfsc_opts; 358 static struct node_fairq_opts fairq_opts; 359 static struct node_state_opt *keep_state_defaults = NULL; 360 static struct pfctl_watermarks syncookie_opts; 361 362 int disallow_table(struct node_host *, const char *); 363 int disallow_urpf_failed(struct node_host *, const char *); 364 int disallow_alias(struct node_host *, const char *); 365 int rule_consistent(struct pfctl_rule *, int); 366 int filter_consistent(struct pfctl_rule *, int); 367 int nat_consistent(struct pfctl_rule *); 368 int rdr_consistent(struct pfctl_rule *); 369 int process_tabledef(char *, struct table_opts *); 370 void expand_label_str(char *, size_t, const char *, const char *); 371 void expand_label_if(const char *, char *, size_t, const char *); 372 void expand_label_addr(const char *, char *, size_t, sa_family_t, 373 struct pf_rule_addr *); 374 void expand_label_port(const char *, char *, size_t, 375 struct pf_rule_addr *); 376 void expand_label_proto(const char *, char *, size_t, u_int8_t); 377 void expand_label_nr(const char *, char *, size_t, 378 struct pfctl_rule *); 379 void expand_eth_rule(struct pfctl_eth_rule *, 380 struct node_if *, struct node_etherproto *, 381 struct node_mac *, struct node_mac *, 382 struct node_host *, struct node_host *, const char *, 383 const char *); 384 void expand_rule(struct pfctl_rule *, struct node_if *, 385 struct node_host *, 386 struct node_host *, struct node_proto *, struct node_os *, 387 struct node_host *, struct node_port *, struct node_host *, 388 struct node_port *, struct node_uid *, struct node_gid *, 389 struct node_if *, struct node_icmp *, const char *); 390 int expand_altq(struct pf_altq *, struct node_if *, 391 struct node_queue *, struct node_queue_bw bwspec, 392 struct node_queue_opt *); 393 int expand_queue(struct pf_altq *, struct node_if *, 394 struct node_queue *, struct node_queue_bw, 395 struct node_queue_opt *); 396 int expand_skip_interface(struct node_if *); 397 398 int check_rulestate(int); 399 int getservice(char *); 400 int rule_label(struct pfctl_rule *, char *s[PF_RULE_MAX_LABEL_COUNT]); 401 int eth_rule_label(struct pfctl_eth_rule *, char *s[PF_RULE_MAX_LABEL_COUNT]); 402 int rt_tableid_max(void); 403 404 void mv_rules(struct pfctl_ruleset *, struct pfctl_ruleset *); 405 void mv_eth_rules(struct pfctl_eth_ruleset *, struct pfctl_eth_ruleset *); 406 void decide_address_family(struct node_host *, sa_family_t *); 407 void remove_invalid_hosts(struct node_host **, sa_family_t *); 408 int invalid_redirect(struct node_host *, sa_family_t); 409 u_int16_t parseicmpspec(char *, sa_family_t); 410 int kw_casecmp(const void *, const void *); 411 int map_tos(char *string, int *); 412 struct node_mac* node_mac_from_string(const char *); 413 struct node_mac* node_mac_from_string_masklen(const char *, int); 414 struct node_mac* node_mac_from_string_mask(const char *, const char *); 415 416 static TAILQ_HEAD(loadanchorshead, loadanchors) 417 loadanchorshead = TAILQ_HEAD_INITIALIZER(loadanchorshead); 418 419 struct loadanchors { 420 TAILQ_ENTRY(loadanchors) entries; 421 char *anchorname; 422 char *filename; 423 }; 424 425 typedef struct { 426 union { 427 int64_t number; 428 double probability; 429 int i; 430 char *string; 431 u_int rtableid; 432 struct { 433 u_int8_t b1; 434 u_int8_t b2; 435 u_int16_t w; 436 u_int16_t w2; 437 } b; 438 struct range range; 439 struct node_if *interface; 440 struct node_proto *proto; 441 struct node_etherproto *etherproto; 442 struct node_icmp *icmp; 443 struct node_host *host; 444 struct node_os *os; 445 struct node_port *port; 446 struct node_uid *uid; 447 struct node_gid *gid; 448 struct node_state_opt *state_opt; 449 struct peer peer; 450 struct { 451 struct peer src, dst; 452 struct node_os *src_os; 453 } fromto; 454 struct { 455 struct node_mac *src; 456 struct node_mac *dst; 457 } etherfromto; 458 struct node_mac *mac; 459 struct { 460 struct node_mac *mac; 461 } etheraddr; 462 char *bridge_to; 463 struct { 464 struct node_host *host; 465 u_int8_t rt; 466 u_int8_t pool_opts; 467 sa_family_t af; 468 struct pf_poolhashkey *key; 469 } route; 470 struct redirection *redirection; 471 struct { 472 int action; 473 struct node_state_opt *options; 474 } keep_state; 475 struct { 476 u_int8_t log; 477 u_int8_t logif; 478 u_int8_t quick; 479 } logquick; 480 struct { 481 int neg; 482 char *name; 483 } tagged; 484 struct pf_poolhashkey *hashkey; 485 struct node_queue *queue; 486 struct node_queue_opt queue_options; 487 struct node_queue_bw queue_bwspec; 488 struct node_qassign qassign; 489 struct filter_opts filter_opts; 490 struct antispoof_opts antispoof_opts; 491 struct queue_opts queue_opts; 492 struct scrub_opts scrub_opts; 493 struct table_opts table_opts; 494 struct pool_opts pool_opts; 495 struct node_hfsc_opts hfsc_opts; 496 struct node_fairq_opts fairq_opts; 497 struct codel_opts codel_opts; 498 struct pfctl_watermarks *watermarks; 499 } v; 500 int lineno; 501 } YYSTYPE; 502 503 #define PPORT_RANGE 1 504 #define PPORT_STAR 2 505 int parseport(char *, struct range *r, int); 506 507 #define DYNIF_MULTIADDR(addr) ((addr).type == PF_ADDR_DYNIFTL && \ 508 (!((addr).iflags & PFI_AFLAG_NOALIAS) || \ 509 !isdigit((addr).v.ifname[strlen((addr).v.ifname)-1]))) 510 511 %} 512 513 %token PASS BLOCK MATCH SCRUB RETURN IN OS OUT LOG QUICK ON FROM TO FLAGS 514 %token RETURNRST RETURNICMP RETURNICMP6 PROTO INET INET6 ALL ANY ICMPTYPE 515 %token ICMP6TYPE CODE KEEP MODULATE STATE PORT RDR NAT BINAT ARROW NODF 516 %token MINTTL ERROR ALLOWOPTS FASTROUTE FILENAME ROUTETO DUPTO REPLYTO NO LABEL 517 %token NOROUTE URPFFAILED FRAGMENT USER GROUP MAXMSS MAXIMUM TTL TOS DROP TABLE 518 %token REASSEMBLE ANCHOR NATANCHOR RDRANCHOR BINATANCHOR 519 %token SET OPTIMIZATION TIMEOUT LIMIT LOGINTERFACE BLOCKPOLICY FAILPOLICY 520 %token RANDOMID REQUIREORDER SYNPROXY FINGERPRINTS NOSYNC DEBUG SKIP HOSTID 521 %token ANTISPOOF FOR INCLUDE KEEPCOUNTERS SYNCOOKIES L3 MATCHES 522 %token ETHER 523 %token BITMASK RANDOM SOURCEHASH ROUNDROBIN STATICPORT PROBABILITY MAPEPORTSET 524 %token ALTQ CBQ CODEL PRIQ HFSC FAIRQ BANDWIDTH TBRSIZE LINKSHARE REALTIME 525 %token UPPERLIMIT QUEUE PRIORITY QLIMIT HOGS BUCKETS RTABLE TARGET INTERVAL 526 %token DNPIPE DNQUEUE RIDENTIFIER 527 %token LOAD RULESET_OPTIMIZATION PRIO 528 %token STICKYADDRESS ENDPI MAXSRCSTATES MAXSRCNODES SOURCETRACK GLOBAL RULE 529 %token MAXSRCCONN MAXSRCCONNRATE OVERLOAD FLUSH SLOPPY PFLOW 530 %token TAGGED TAG IFBOUND FLOATING STATEPOLICY STATEDEFAULTS ROUTE SETTOS 531 %token DIVERTTO DIVERTREPLY BRIDGE_TO RECEIVEDON NE LE GE AFTO 532 %token <v.string> STRING 533 %token <v.number> NUMBER 534 %token <v.i> PORTBINARY 535 %type <v.interface> interface if_list if_item_not if_item 536 %type <v.number> number icmptype icmp6type uid gid 537 %type <v.number> tos not yesno optnodf 538 %type <v.probability> probability 539 %type <v.i> no dir af fragcache optimizer syncookie_val 540 %type <v.i> sourcetrack flush unaryop statelock 541 %type <v.i> etherprotoval 542 %type <v.b> action nataction natpasslog scrubaction 543 %type <v.b> flags flag blockspec prio 544 %type <v.range> portplain portstar portrange 545 %type <v.hashkey> hashkey 546 %type <v.proto> proto proto_list proto_item 547 %type <v.number> protoval 548 %type <v.icmp> icmpspec 549 %type <v.icmp> icmp_list icmp_item 550 %type <v.icmp> icmp6_list icmp6_item 551 %type <v.number> reticmpspec reticmp6spec 552 %type <v.fromto> fromto l3fromto 553 %type <v.peer> ipportspec from to 554 %type <v.host> ipspec toipspec xhost host dynaddr host_list 555 %type <v.host> redir_host_list redirspec 556 %type <v.host> route_host route_host_list routespec 557 %type <v.os> os xos os_list 558 %type <v.port> portspec port_list port_item 559 %type <v.uid> uids uid_list uid_item 560 %type <v.gid> gids gid_list gid_item 561 %type <v.route> route 562 %type <v.redirection> redirection redirpool 563 %type <v.string> label stringall tag anchorname 564 %type <v.string> string varstring numberstring 565 %type <v.keep_state> keep 566 %type <v.state_opt> state_opt_spec state_opt_list state_opt_item 567 %type <v.logquick> logquick quick log logopts logopt 568 %type <v.interface> antispoof_ifspc antispoof_iflst antispoof_if 569 %type <v.qassign> qname etherqname 570 %type <v.queue> qassign qassign_list qassign_item 571 %type <v.queue_options> scheduler 572 %type <v.number> cbqflags_list cbqflags_item 573 %type <v.number> priqflags_list priqflags_item 574 %type <v.hfsc_opts> hfscopts_list hfscopts_item hfsc_opts 575 %type <v.fairq_opts> fairqopts_list fairqopts_item fairq_opts 576 %type <v.codel_opts> codelopts_list codelopts_item codel_opts 577 %type <v.queue_bwspec> bandwidth 578 %type <v.filter_opts> filter_opts filter_opt filter_opts_l etherfilter_opts etherfilter_opt etherfilter_opts_l 579 %type <v.filter_opts> filter_sets filter_set filter_sets_l 580 %type <v.antispoof_opts> antispoof_opts antispoof_opt antispoof_opts_l 581 %type <v.queue_opts> queue_opts queue_opt queue_opts_l 582 %type <v.scrub_opts> scrub_opts scrub_opt scrub_opts_l 583 %type <v.table_opts> table_opts table_opt table_opts_l 584 %type <v.pool_opts> pool_opts pool_opt pool_opts_l 585 %type <v.tagged> tagged 586 %type <v.rtableid> rtable 587 %type <v.watermarks> syncookie_opts 588 %type <v.etherproto> etherproto etherproto_list etherproto_item 589 %type <v.etherfromto> etherfromto 590 %type <v.etheraddr> etherfrom etherto 591 %type <v.bridge_to> bridge 592 %type <v.mac> xmac mac mac_list macspec 593 %% 594 595 ruleset : /* empty */ 596 | ruleset include '\n' 597 | ruleset '\n' 598 | ruleset option '\n' 599 | ruleset etherrule '\n' 600 | ruleset etheranchorrule '\n' 601 | ruleset scrubrule '\n' 602 | ruleset natrule '\n' 603 | ruleset binatrule '\n' 604 | ruleset pfrule '\n' 605 | ruleset anchorrule '\n' 606 | ruleset loadrule '\n' 607 | ruleset altqif '\n' 608 | ruleset queuespec '\n' 609 | ruleset varset '\n' 610 | ruleset antispoof '\n' 611 | ruleset tabledef '\n' 612 | '{' fakeanchor '}' '\n'; 613 | ruleset error '\n' { file->errors++; } 614 ; 615 616 include : INCLUDE STRING { 617 struct file *nfile; 618 619 if ((nfile = pushfile($2, 0)) == NULL) { 620 yyerror("failed to include file %s", $2); 621 free($2); 622 YYERROR; 623 } 624 free($2); 625 626 file = nfile; 627 lungetc('\n'); 628 } 629 ; 630 631 /* 632 * apply to previouslys specified rule: must be careful to note 633 * what that is: pf or nat or binat or rdr 634 */ 635 fakeanchor : fakeanchor '\n' 636 | fakeanchor anchorrule '\n' 637 | fakeanchor binatrule '\n' 638 | fakeanchor natrule '\n' 639 | fakeanchor pfrule '\n' 640 | fakeanchor error '\n' 641 ; 642 643 optimizer : string { 644 if (!strcmp($1, "none")) 645 $$ = 0; 646 else if (!strcmp($1, "basic")) 647 $$ = PF_OPTIMIZE_BASIC; 648 else if (!strcmp($1, "profile")) 649 $$ = PF_OPTIMIZE_BASIC | PF_OPTIMIZE_PROFILE; 650 else { 651 yyerror("unknown ruleset-optimization %s", $1); 652 YYERROR; 653 } 654 } 655 ; 656 657 optnodf : /* empty */ { $$ = 0; } 658 | NODF { $$ = 1; } 659 ; 660 661 option : SET REASSEMBLE yesno optnodf { 662 if (check_rulestate(PFCTL_STATE_OPTION)) 663 YYERROR; 664 pfctl_set_reassembly(pf, $3, $4); 665 } 666 | SET OPTIMIZATION STRING { 667 if (check_rulestate(PFCTL_STATE_OPTION)) { 668 free($3); 669 YYERROR; 670 } 671 if (pfctl_set_optimization(pf, $3) != 0) { 672 yyerror("unknown optimization %s", $3); 673 free($3); 674 YYERROR; 675 } 676 free($3); 677 } 678 | SET RULESET_OPTIMIZATION optimizer { 679 if (!(pf->opts & PF_OPT_OPTIMIZE)) { 680 pf->opts |= PF_OPT_OPTIMIZE; 681 pf->optimize = $3; 682 } 683 } 684 | SET TIMEOUT timeout_spec 685 | SET TIMEOUT '{' optnl timeout_list '}' 686 | SET LIMIT limit_spec 687 | SET LIMIT '{' optnl limit_list '}' 688 | SET LOGINTERFACE stringall { 689 if (check_rulestate(PFCTL_STATE_OPTION)) { 690 free($3); 691 YYERROR; 692 } 693 if (pfctl_set_logif(pf, $3) != 0) { 694 yyerror("error setting loginterface %s", $3); 695 free($3); 696 YYERROR; 697 } 698 free($3); 699 } 700 | SET HOSTID number { 701 if ($3 == 0 || $3 > UINT_MAX) { 702 yyerror("hostid must be non-zero"); 703 YYERROR; 704 } 705 if (pfctl_set_hostid(pf, $3) != 0) { 706 yyerror("error setting hostid %08x", $3); 707 YYERROR; 708 } 709 } 710 | SET BLOCKPOLICY DROP { 711 if (pf->opts & PF_OPT_VERBOSE) 712 printf("set block-policy drop\n"); 713 if (check_rulestate(PFCTL_STATE_OPTION)) 714 YYERROR; 715 blockpolicy = PFRULE_DROP; 716 } 717 | SET BLOCKPOLICY RETURN { 718 if (pf->opts & PF_OPT_VERBOSE) 719 printf("set block-policy return\n"); 720 if (check_rulestate(PFCTL_STATE_OPTION)) 721 YYERROR; 722 blockpolicy = PFRULE_RETURN; 723 } 724 | SET FAILPOLICY DROP { 725 if (pf->opts & PF_OPT_VERBOSE) 726 printf("set fail-policy drop\n"); 727 if (check_rulestate(PFCTL_STATE_OPTION)) 728 YYERROR; 729 failpolicy = PFRULE_DROP; 730 } 731 | SET FAILPOLICY RETURN { 732 if (pf->opts & PF_OPT_VERBOSE) 733 printf("set fail-policy return\n"); 734 if (check_rulestate(PFCTL_STATE_OPTION)) 735 YYERROR; 736 failpolicy = PFRULE_RETURN; 737 } 738 | SET REQUIREORDER yesno { 739 if (pf->opts & PF_OPT_VERBOSE) 740 printf("set require-order %s\n", 741 $3 == 1 ? "yes" : "no"); 742 require_order = $3; 743 } 744 | SET FINGERPRINTS STRING { 745 if (pf->opts & PF_OPT_VERBOSE) 746 printf("set fingerprints \"%s\"\n", $3); 747 if (check_rulestate(PFCTL_STATE_OPTION)) { 748 free($3); 749 YYERROR; 750 } 751 if (!pf->anchor->name[0]) { 752 if (pfctl_file_fingerprints(pf->dev, 753 pf->opts, $3)) { 754 yyerror("error loading " 755 "fingerprints %s", $3); 756 free($3); 757 YYERROR; 758 } 759 } 760 free($3); 761 } 762 | SET STATEPOLICY statelock { 763 if (pf->opts & PF_OPT_VERBOSE) 764 switch ($3) { 765 case 0: 766 printf("set state-policy floating\n"); 767 break; 768 case PFRULE_IFBOUND: 769 printf("set state-policy if-bound\n"); 770 break; 771 } 772 default_statelock = $3; 773 } 774 | SET DEBUG STRING { 775 if (check_rulestate(PFCTL_STATE_OPTION)) { 776 free($3); 777 YYERROR; 778 } 779 if (pfctl_do_set_debug(pf, $3) != 0) { 780 yyerror("error setting debuglevel %s", $3); 781 free($3); 782 YYERROR; 783 } 784 free($3); 785 } 786 | SET SKIP interface { 787 if (expand_skip_interface($3) != 0) { 788 yyerror("error setting skip interface(s)"); 789 YYERROR; 790 } 791 } 792 | SET STATEDEFAULTS state_opt_list { 793 if (keep_state_defaults != NULL) { 794 yyerror("cannot redefine state-defaults"); 795 YYERROR; 796 } 797 keep_state_defaults = $3; 798 } 799 | SET KEEPCOUNTERS { 800 pf->keep_counters = true; 801 } 802 | SET SYNCOOKIES syncookie_val syncookie_opts { 803 if (pfctl_cfg_syncookies(pf, $3, $4)) { 804 yyerror("error setting syncookies"); 805 YYERROR; 806 } 807 } 808 ; 809 810 syncookie_val : STRING { 811 if (!strcmp($1, "never")) 812 $$ = PFCTL_SYNCOOKIES_NEVER; 813 else if (!strcmp($1, "adaptive")) 814 $$ = PFCTL_SYNCOOKIES_ADAPTIVE; 815 else if (!strcmp($1, "always")) 816 $$ = PFCTL_SYNCOOKIES_ALWAYS; 817 else { 818 yyerror("illegal value for syncookies"); 819 YYERROR; 820 } 821 } 822 ; 823 syncookie_opts : /* empty */ { $$ = NULL; } 824 | { 825 memset(&syncookie_opts, 0, sizeof(syncookie_opts)); 826 } '(' syncookie_opt_l ')' { $$ = &syncookie_opts; } 827 ; 828 829 syncookie_opt_l : syncookie_opt_l comma syncookie_opt 830 | syncookie_opt 831 ; 832 833 syncookie_opt : STRING STRING { 834 double val; 835 char *cp; 836 837 val = strtod($2, &cp); 838 if (cp == NULL || strcmp(cp, "%")) 839 YYERROR; 840 if (val <= 0 || val > 100) { 841 yyerror("illegal percentage value"); 842 YYERROR; 843 } 844 if (!strcmp($1, "start")) { 845 syncookie_opts.hi = val; 846 } else if (!strcmp($1, "end")) { 847 syncookie_opts.lo = val; 848 } else { 849 yyerror("illegal syncookie option"); 850 YYERROR; 851 } 852 } 853 ; 854 855 stringall : STRING { $$ = $1; } 856 | ALL { 857 if (($$ = strdup("all")) == NULL) { 858 err(1, "stringall: strdup"); 859 } 860 } 861 ; 862 863 string : STRING string { 864 if (asprintf(&$$, "%s %s", $1, $2) == -1) 865 err(1, "string: asprintf"); 866 free($1); 867 free($2); 868 } 869 | STRING 870 ; 871 872 varstring : numberstring varstring { 873 if (asprintf(&$$, "%s %s", $1, $2) == -1) 874 err(1, "string: asprintf"); 875 free($1); 876 free($2); 877 } 878 | numberstring 879 ; 880 881 numberstring : NUMBER { 882 char *s; 883 if (asprintf(&s, "%lld", (long long)$1) == -1) { 884 yyerror("string: asprintf"); 885 YYERROR; 886 } 887 $$ = s; 888 } 889 | STRING 890 ; 891 892 varset : STRING '=' varstring { 893 char *s = $1; 894 if (pf->opts & PF_OPT_VERBOSE) 895 printf("%s = \"%s\"\n", $1, $3); 896 while (*s++) { 897 if (isspace((unsigned char)*s)) { 898 yyerror("macro name cannot contain " 899 "whitespace"); 900 YYERROR; 901 } 902 } 903 if (symset($1, $3, 0) == -1) 904 err(1, "cannot store variable %s", $1); 905 free($1); 906 free($3); 907 } 908 ; 909 910 anchorname : STRING { $$ = $1; } 911 | /* empty */ { $$ = NULL; } 912 ; 913 914 pfa_anchorlist : /* empty */ 915 | pfa_anchorlist '\n' 916 | pfa_anchorlist pfrule '\n' 917 | pfa_anchorlist anchorrule '\n' 918 ; 919 920 pfa_anchor : '{' 921 { 922 char ta[PF_ANCHOR_NAME_SIZE]; 923 struct pfctl_ruleset *rs; 924 925 /* stepping into a brace anchor */ 926 pf->asd++; 927 pf->bn++; 928 929 /* 930 * Anchor contents are parsed before the anchor rule 931 * production completes, so we don't know the real 932 * location yet. Create a holding ruleset in the root; 933 * contents will be moved afterwards. 934 */ 935 snprintf(ta, PF_ANCHOR_NAME_SIZE, "_%d", pf->bn); 936 rs = pf_find_or_create_ruleset(ta); 937 if (rs == NULL) 938 err(1, "pfa_anchor: pf_find_or_create_ruleset"); 939 pf->astack[pf->asd] = rs->anchor; 940 pf->anchor = rs->anchor; 941 } '\n' pfa_anchorlist '}' 942 { 943 pf->alast = pf->anchor; 944 pf->asd--; 945 pf->anchor = pf->astack[pf->asd]; 946 } 947 | /* empty */ 948 ; 949 950 anchorrule : ANCHOR anchorname dir quick interface af proto fromto 951 filter_opts pfa_anchor 952 { 953 struct pfctl_rule r; 954 struct node_proto *proto; 955 956 if (check_rulestate(PFCTL_STATE_FILTER)) { 957 if ($2) 958 free($2); 959 YYERROR; 960 } 961 962 if ($2 && ($2[0] == '_' || strstr($2, "/_") != NULL)) { 963 free($2); 964 yyerror("anchor names beginning with '_' " 965 "are reserved for internal use"); 966 YYERROR; 967 } 968 969 memset(&r, 0, sizeof(r)); 970 if (pf->astack[pf->asd + 1]) { 971 if ($2 && strchr($2, '/') != NULL) { 972 free($2); 973 yyerror("anchor paths containing '/' " 974 "cannot be used for inline anchors."); 975 YYERROR; 976 } 977 978 /* Move inline rules into relative location. */ 979 pfctl_anchor_setup(&r, 980 &pf->astack[pf->asd]->ruleset, 981 $2 ? $2 : pf->alast->name); 982 983 if (r.anchor == NULL) 984 err(1, "anchorrule: unable to " 985 "create ruleset"); 986 987 if (pf->alast != r.anchor) { 988 if (r.anchor->match) { 989 yyerror("inline anchor '%s' " 990 "already exists", 991 r.anchor->name); 992 YYERROR; 993 } 994 mv_rules(&pf->alast->ruleset, 995 &r.anchor->ruleset); 996 } 997 pf_remove_if_empty_ruleset(&pf->alast->ruleset); 998 pf->alast = r.anchor; 999 } else { 1000 if (!$2) { 1001 yyerror("anchors without explicit " 1002 "rules must specify a name"); 1003 YYERROR; 1004 } 1005 } 1006 r.direction = $3; 1007 r.quick = $4.quick; 1008 r.af = $6; 1009 r.prob = $9.prob; 1010 r.rtableid = $9.rtableid; 1011 r.ridentifier = $9.ridentifier; 1012 1013 if ($9.tag) 1014 if (strlcpy(r.tagname, $9.tag, 1015 PF_TAG_NAME_SIZE) >= PF_TAG_NAME_SIZE) { 1016 yyerror("tag too long, max %u chars", 1017 PF_TAG_NAME_SIZE - 1); 1018 YYERROR; 1019 } 1020 if ($9.match_tag) 1021 if (strlcpy(r.match_tagname, $9.match_tag, 1022 PF_TAG_NAME_SIZE) >= PF_TAG_NAME_SIZE) { 1023 yyerror("tag too long, max %u chars", 1024 PF_TAG_NAME_SIZE - 1); 1025 YYERROR; 1026 } 1027 r.match_tag_not = $9.match_tag_not; 1028 if (rule_label(&r, $9.label)) 1029 YYERROR; 1030 for (int i = 0; i < PF_RULE_MAX_LABEL_COUNT; i++) 1031 free($9.label[i]); 1032 r.flags = $9.flags.b1; 1033 r.flagset = $9.flags.b2; 1034 if (($9.flags.b1 & $9.flags.b2) != $9.flags.b1) { 1035 yyerror("flags always false"); 1036 YYERROR; 1037 } 1038 if ($9.flags.b1 || $9.flags.b2 || $8.src_os) { 1039 for (proto = $7; proto != NULL && 1040 proto->proto != IPPROTO_TCP; 1041 proto = proto->next) 1042 ; /* nothing */ 1043 if (proto == NULL && $7 != NULL) { 1044 if ($9.flags.b1 || $9.flags.b2) 1045 yyerror( 1046 "flags only apply to tcp"); 1047 if ($8.src_os) 1048 yyerror( 1049 "OS fingerprinting only " 1050 "applies to tcp"); 1051 YYERROR; 1052 } 1053 } 1054 1055 r.tos = $9.tos; 1056 1057 if ($9.keep.action) { 1058 yyerror("cannot specify state handling " 1059 "on anchors"); 1060 YYERROR; 1061 } 1062 1063 if ($9.match_tag) 1064 if (strlcpy(r.match_tagname, $9.match_tag, 1065 PF_TAG_NAME_SIZE) >= PF_TAG_NAME_SIZE) { 1066 yyerror("tag too long, max %u chars", 1067 PF_TAG_NAME_SIZE - 1); 1068 YYERROR; 1069 } 1070 r.match_tag_not = $9.match_tag_not; 1071 if ($9.marker & FOM_PRIO) { 1072 if ($9.prio == 0) 1073 r.prio = PF_PRIO_ZERO; 1074 else 1075 r.prio = $9.prio; 1076 } 1077 if ($9.marker & FOM_SETPRIO) { 1078 r.set_prio[0] = $9.set_prio[0]; 1079 r.set_prio[1] = $9.set_prio[1]; 1080 r.scrub_flags |= PFSTATE_SETPRIO; 1081 } 1082 1083 decide_address_family($8.src.host, &r.af); 1084 decide_address_family($8.dst.host, &r.af); 1085 r.naf = r.af; 1086 1087 expand_rule(&r, $5, NULL, NULL, $7, $8.src_os, 1088 $8.src.host, $8.src.port, $8.dst.host, $8.dst.port, 1089 $9.uid, $9.gid, $9.rcv, $9.icmpspec, 1090 pf->astack[pf->asd + 1] ? pf->alast->name : $2); 1091 free($2); 1092 pf->astack[pf->asd + 1] = NULL; 1093 } 1094 | NATANCHOR string interface af proto fromto rtable { 1095 struct pfctl_rule r; 1096 1097 if (check_rulestate(PFCTL_STATE_NAT)) { 1098 free($2); 1099 YYERROR; 1100 } 1101 1102 memset(&r, 0, sizeof(r)); 1103 r.action = PF_NAT; 1104 r.af = $4; 1105 r.rtableid = $7; 1106 1107 decide_address_family($6.src.host, &r.af); 1108 decide_address_family($6.dst.host, &r.af); 1109 1110 expand_rule(&r, $3, NULL, NULL, $5, $6.src_os, 1111 $6.src.host, $6.src.port, $6.dst.host, $6.dst.port, 1112 0, 0, 0, 0, $2); 1113 free($2); 1114 } 1115 | RDRANCHOR string interface af proto fromto rtable { 1116 struct pfctl_rule r; 1117 1118 if (check_rulestate(PFCTL_STATE_NAT)) { 1119 free($2); 1120 YYERROR; 1121 } 1122 1123 memset(&r, 0, sizeof(r)); 1124 r.action = PF_RDR; 1125 r.af = $4; 1126 r.rtableid = $7; 1127 1128 decide_address_family($6.src.host, &r.af); 1129 decide_address_family($6.dst.host, &r.af); 1130 1131 if ($6.src.port != NULL) { 1132 yyerror("source port parameter not supported" 1133 " in rdr-anchor"); 1134 YYERROR; 1135 } 1136 if ($6.dst.port != NULL) { 1137 if ($6.dst.port->next != NULL) { 1138 yyerror("destination port list " 1139 "expansion not supported in " 1140 "rdr-anchor"); 1141 YYERROR; 1142 } else if ($6.dst.port->op != PF_OP_EQ) { 1143 yyerror("destination port operators" 1144 " not supported in rdr-anchor"); 1145 YYERROR; 1146 } 1147 r.dst.port[0] = $6.dst.port->port[0]; 1148 r.dst.port[1] = $6.dst.port->port[1]; 1149 r.dst.port_op = $6.dst.port->op; 1150 } 1151 1152 expand_rule(&r, $3, NULL, NULL, $5, $6.src_os, 1153 $6.src.host, $6.src.port, $6.dst.host, $6.dst.port, 1154 0, 0, 0, 0, $2); 1155 free($2); 1156 } 1157 | BINATANCHOR string interface af proto fromto rtable { 1158 struct pfctl_rule r; 1159 1160 if (check_rulestate(PFCTL_STATE_NAT)) { 1161 free($2); 1162 YYERROR; 1163 } 1164 1165 memset(&r, 0, sizeof(r)); 1166 r.action = PF_BINAT; 1167 r.af = $4; 1168 r.rtableid = $7; 1169 if ($5 != NULL) { 1170 if ($5->next != NULL) { 1171 yyerror("proto list expansion" 1172 " not supported in binat-anchor"); 1173 YYERROR; 1174 } 1175 r.proto = $5->proto; 1176 free($5); 1177 } 1178 1179 if ($6.src.host != NULL || $6.src.port != NULL || 1180 $6.dst.host != NULL || $6.dst.port != NULL) { 1181 yyerror("fromto parameter not supported" 1182 " in binat-anchor"); 1183 YYERROR; 1184 } 1185 1186 decide_address_family($6.src.host, &r.af); 1187 decide_address_family($6.dst.host, &r.af); 1188 1189 pfctl_append_rule(pf, &r, $2); 1190 free($2); 1191 } 1192 ; 1193 1194 loadrule : LOAD ANCHOR string FROM string { 1195 struct loadanchors *loadanchor; 1196 1197 if (strlen(pf->anchor->name) + 1 + 1198 strlen($3) >= MAXPATHLEN) { 1199 yyerror("anchorname %s too long, max %u\n", 1200 $3, MAXPATHLEN - 1); 1201 free($3); 1202 YYERROR; 1203 } 1204 loadanchor = calloc(1, sizeof(struct loadanchors)); 1205 if (loadanchor == NULL) 1206 err(1, "loadrule: calloc"); 1207 if ((loadanchor->anchorname = malloc(MAXPATHLEN)) == 1208 NULL) 1209 err(1, "loadrule: malloc"); 1210 if (pf->anchor->name[0]) 1211 snprintf(loadanchor->anchorname, MAXPATHLEN, 1212 "%s/%s", pf->anchor->name, $3); 1213 else 1214 strlcpy(loadanchor->anchorname, $3, MAXPATHLEN); 1215 if ((loadanchor->filename = strdup($5)) == NULL) 1216 err(1, "loadrule: strdup"); 1217 1218 TAILQ_INSERT_TAIL(&loadanchorshead, loadanchor, 1219 entries); 1220 1221 free($3); 1222 free($5); 1223 }; 1224 1225 scrubaction : no SCRUB { 1226 $$.b2 = $$.w = 0; 1227 if ($1) 1228 $$.b1 = PF_NOSCRUB; 1229 else 1230 $$.b1 = PF_SCRUB; 1231 } 1232 ; 1233 1234 etherrule : ETHER action dir quick interface bridge etherproto etherfromto l3fromto etherfilter_opts 1235 { 1236 struct pfctl_eth_rule r; 1237 1238 bzero(&r, sizeof(r)); 1239 1240 if (check_rulestate(PFCTL_STATE_ETHER)) 1241 YYERROR; 1242 1243 r.action = $2.b1; 1244 r.direction = $3; 1245 r.quick = $4.quick; 1246 if ($10.tag != NULL) 1247 strlcpy(r.tagname, $10.tag, sizeof(r.tagname)); 1248 if ($10.match_tag) 1249 if (strlcpy(r.match_tagname, $10.match_tag, 1250 PF_TAG_NAME_SIZE) >= PF_TAG_NAME_SIZE) { 1251 yyerror("tag too long, max %u chars", 1252 PF_TAG_NAME_SIZE - 1); 1253 YYERROR; 1254 } 1255 r.match_tag_not = $10.match_tag_not; 1256 if ($10.queues.qname != NULL) 1257 strlcpy(r.qname, $10.queues.qname, sizeof(r.qname)); 1258 r.dnpipe = $10.dnpipe; 1259 r.dnflags = $10.free_flags; 1260 if (eth_rule_label(&r, $10.label)) 1261 YYERROR; 1262 for (int i = 0; i < PF_RULE_MAX_LABEL_COUNT; i++) 1263 free($10.label[i]); 1264 r.ridentifier = $10.ridentifier; 1265 1266 expand_eth_rule(&r, $5, $7, $8.src, $8.dst, 1267 $9.src.host, $9.dst.host, $6, ""); 1268 } 1269 ; 1270 1271 etherpfa_anchorlist : /* empty */ 1272 | etherpfa_anchorlist '\n' 1273 | etherpfa_anchorlist etherrule '\n' 1274 | etherpfa_anchorlist etheranchorrule '\n' 1275 ; 1276 1277 etherpfa_anchor : '{' 1278 { 1279 char ta[PF_ANCHOR_NAME_SIZE]; 1280 struct pfctl_eth_ruleset *rs; 1281 1282 /* steping into a brace anchor */ 1283 pf->asd++; 1284 pf->bn++; 1285 1286 /* create a holding ruleset in the root */ 1287 snprintf(ta, PF_ANCHOR_NAME_SIZE, "_%d", pf->bn); 1288 rs = pf_find_or_create_eth_ruleset(ta); 1289 if (rs == NULL) 1290 err(1, "etherpfa_anchor: pf_find_or_create_eth_ruleset"); 1291 pf->eastack[pf->asd] = rs->anchor; 1292 pf->eanchor = rs->anchor; 1293 } '\n' etherpfa_anchorlist '}' 1294 { 1295 pf->ealast = pf->eanchor; 1296 pf->asd--; 1297 pf->eanchor = pf->eastack[pf->asd]; 1298 } 1299 | /* empty */ 1300 ; 1301 1302 etheranchorrule : ETHER ANCHOR anchorname dir quick interface etherproto etherfromto l3fromto etherpfa_anchor 1303 { 1304 struct pfctl_eth_rule r; 1305 1306 if (check_rulestate(PFCTL_STATE_ETHER)) { 1307 free($3); 1308 YYERROR; 1309 } 1310 1311 if ($3 && ($3[0] == '_' || strstr($3, "/_") != NULL)) { 1312 free($3); 1313 yyerror("anchor names beginning with '_' " 1314 "are reserved for internal use"); 1315 YYERROR; 1316 } 1317 1318 memset(&r, 0, sizeof(r)); 1319 if (pf->eastack[pf->asd + 1]) { 1320 if ($3 && strchr($3, '/') != NULL) { 1321 free($3); 1322 yyerror("anchor paths containing '/' " 1323 "cannot be used for inline anchors."); 1324 YYERROR; 1325 } 1326 1327 /* Move inline rules into relative location. */ 1328 pfctl_eth_anchor_setup(pf, &r, 1329 &pf->eastack[pf->asd]->ruleset, 1330 $3 ? $3 : pf->ealast->name); 1331 if (r.anchor == NULL) 1332 err(1, "etheranchorrule: unable to " 1333 "create ruleset"); 1334 1335 if (pf->ealast != r.anchor) { 1336 if (r.anchor->match) { 1337 yyerror("inline anchor '%s' " 1338 "already exists", 1339 r.anchor->name); 1340 YYERROR; 1341 } 1342 mv_eth_rules(&pf->ealast->ruleset, 1343 &r.anchor->ruleset); 1344 } 1345 pf_remove_if_empty_eth_ruleset(&pf->ealast->ruleset); 1346 pf->ealast = r.anchor; 1347 } else { 1348 if (!$3) { 1349 yyerror("anchors without explicit " 1350 "rules must specify a name"); 1351 YYERROR; 1352 } 1353 } 1354 1355 r.direction = $4; 1356 r.quick = $5.quick; 1357 1358 expand_eth_rule(&r, $6, $7, $8.src, $8.dst, 1359 $9.src.host, $9.dst.host, NULL, 1360 pf->eastack[pf->asd + 1] ? pf->ealast->name : $3); 1361 1362 free($3); 1363 pf->eastack[pf->asd + 1] = NULL; 1364 } 1365 ; 1366 1367 etherfilter_opts : { 1368 bzero(&filter_opts, sizeof filter_opts); 1369 } 1370 etherfilter_opts_l 1371 { $$ = filter_opts; } 1372 | /* empty */ { 1373 bzero(&filter_opts, sizeof filter_opts); 1374 $$ = filter_opts; 1375 } 1376 ; 1377 1378 etherfilter_opts_l : etherfilter_opts_l etherfilter_opt 1379 | etherfilter_opt 1380 1381 etherfilter_opt : etherqname { 1382 if (filter_opts.queues.qname) { 1383 yyerror("queue cannot be redefined"); 1384 YYERROR; 1385 } 1386 filter_opts.queues = $1; 1387 } 1388 | RIDENTIFIER number { 1389 filter_opts.ridentifier = $2; 1390 } 1391 | label { 1392 if (filter_opts.labelcount >= PF_RULE_MAX_LABEL_COUNT) { 1393 yyerror("label can only be used %d times", PF_RULE_MAX_LABEL_COUNT); 1394 YYERROR; 1395 } 1396 filter_opts.label[filter_opts.labelcount++] = $1; 1397 } 1398 | TAG string { 1399 filter_opts.tag = $2; 1400 } 1401 | not TAGGED string { 1402 filter_opts.match_tag = $3; 1403 filter_opts.match_tag_not = $1; 1404 } 1405 | DNPIPE number { 1406 filter_opts.dnpipe = $2; 1407 filter_opts.free_flags |= PFRULE_DN_IS_PIPE; 1408 } 1409 | DNQUEUE number { 1410 filter_opts.dnpipe = $2; 1411 filter_opts.free_flags |= PFRULE_DN_IS_QUEUE; 1412 } 1413 ; 1414 1415 bridge : /* empty */ { 1416 $$ = NULL; 1417 } 1418 | BRIDGE_TO STRING { 1419 $$ = strdup($2); 1420 } 1421 ; 1422 1423 scrubrule : scrubaction dir logquick interface af proto fromto scrub_opts 1424 { 1425 struct pfctl_rule r; 1426 1427 if (check_rulestate(PFCTL_STATE_SCRUB)) 1428 YYERROR; 1429 1430 memset(&r, 0, sizeof(r)); 1431 1432 r.action = $1.b1; 1433 r.direction = $2; 1434 1435 r.log = $3.log; 1436 r.logif = $3.logif; 1437 if ($3.quick) { 1438 yyerror("scrub rules do not support 'quick'"); 1439 YYERROR; 1440 } 1441 1442 r.af = $5; 1443 if ($8.nodf) 1444 r.rule_flag |= PFRULE_NODF; 1445 if ($8.randomid) 1446 r.rule_flag |= PFRULE_RANDOMID; 1447 if ($8.reassemble_tcp) { 1448 if (r.direction != PF_INOUT) { 1449 yyerror("reassemble tcp rules can not " 1450 "specify direction"); 1451 YYERROR; 1452 } 1453 r.rule_flag |= PFRULE_REASSEMBLE_TCP; 1454 } 1455 if ($8.minttl) 1456 r.min_ttl = $8.minttl; 1457 if ($8.maxmss) 1458 r.max_mss = $8.maxmss; 1459 if ($8.marker & FOM_SETTOS) { 1460 r.rule_flag |= PFRULE_SET_TOS; 1461 r.set_tos = $8.settos; 1462 } 1463 if ($8.fragcache) 1464 r.rule_flag |= $8.fragcache; 1465 if ($8.match_tag) 1466 if (strlcpy(r.match_tagname, $8.match_tag, 1467 PF_TAG_NAME_SIZE) >= PF_TAG_NAME_SIZE) { 1468 yyerror("tag too long, max %u chars", 1469 PF_TAG_NAME_SIZE - 1); 1470 YYERROR; 1471 } 1472 r.match_tag_not = $8.match_tag_not; 1473 r.rtableid = $8.rtableid; 1474 1475 expand_rule(&r, $4, NULL, NULL, $6, $7.src_os, 1476 $7.src.host, $7.src.port, $7.dst.host, $7.dst.port, 1477 NULL, NULL, NULL, NULL, ""); 1478 } 1479 ; 1480 1481 scrub_opts : { 1482 bzero(&scrub_opts, sizeof scrub_opts); 1483 scrub_opts.rtableid = -1; 1484 } 1485 scrub_opts_l 1486 { $$ = scrub_opts; } 1487 | /* empty */ { 1488 bzero(&scrub_opts, sizeof scrub_opts); 1489 scrub_opts.rtableid = -1; 1490 $$ = scrub_opts; 1491 } 1492 ; 1493 1494 scrub_opts_l : scrub_opts_l comma scrub_opt 1495 | scrub_opt 1496 ; 1497 1498 scrub_opt : NODF { 1499 if (scrub_opts.nodf) { 1500 yyerror("no-df cannot be respecified"); 1501 YYERROR; 1502 } 1503 scrub_opts.nodf = 1; 1504 } 1505 | MINTTL NUMBER { 1506 if (scrub_opts.marker & FOM_MINTTL) { 1507 yyerror("min-ttl cannot be respecified"); 1508 YYERROR; 1509 } 1510 if ($2 < 0 || $2 > 255) { 1511 yyerror("illegal min-ttl value %d", $2); 1512 YYERROR; 1513 } 1514 scrub_opts.marker |= FOM_MINTTL; 1515 scrub_opts.minttl = $2; 1516 } 1517 | MAXMSS NUMBER { 1518 if (scrub_opts.marker & FOM_MAXMSS) { 1519 yyerror("max-mss cannot be respecified"); 1520 YYERROR; 1521 } 1522 if ($2 < 0 || $2 > 65535) { 1523 yyerror("illegal max-mss value %d", $2); 1524 YYERROR; 1525 } 1526 scrub_opts.marker |= FOM_MAXMSS; 1527 scrub_opts.maxmss = $2; 1528 } 1529 | SETTOS tos { 1530 if (scrub_opts.marker & FOM_SETTOS) { 1531 yyerror("set-tos cannot be respecified"); 1532 YYERROR; 1533 } 1534 scrub_opts.marker |= FOM_SETTOS; 1535 scrub_opts.settos = $2; 1536 } 1537 | fragcache { 1538 if (scrub_opts.marker & FOM_FRAGCACHE) { 1539 yyerror("fragcache cannot be respecified"); 1540 YYERROR; 1541 } 1542 scrub_opts.marker |= FOM_FRAGCACHE; 1543 scrub_opts.fragcache = $1; 1544 } 1545 | REASSEMBLE STRING { 1546 if (strcasecmp($2, "tcp") != 0) { 1547 yyerror("scrub reassemble supports only tcp, " 1548 "not '%s'", $2); 1549 free($2); 1550 YYERROR; 1551 } 1552 free($2); 1553 if (scrub_opts.reassemble_tcp) { 1554 yyerror("reassemble tcp cannot be respecified"); 1555 YYERROR; 1556 } 1557 scrub_opts.reassemble_tcp = 1; 1558 } 1559 | RANDOMID { 1560 if (scrub_opts.randomid) { 1561 yyerror("random-id cannot be respecified"); 1562 YYERROR; 1563 } 1564 scrub_opts.randomid = 1; 1565 } 1566 | RTABLE NUMBER { 1567 if ($2 < 0 || $2 > rt_tableid_max()) { 1568 yyerror("invalid rtable id"); 1569 YYERROR; 1570 } 1571 scrub_opts.rtableid = $2; 1572 } 1573 | not TAGGED string { 1574 scrub_opts.match_tag = $3; 1575 scrub_opts.match_tag_not = $1; 1576 } 1577 ; 1578 1579 fragcache : FRAGMENT REASSEMBLE { $$ = 0; /* default */ } 1580 | FRAGMENT NO REASSEMBLE { $$ = PFRULE_FRAGMENT_NOREASS; } 1581 ; 1582 1583 antispoof : ANTISPOOF logquick antispoof_ifspc af antispoof_opts { 1584 struct pfctl_rule r; 1585 struct node_host *h = NULL, *hh; 1586 struct node_if *i, *j; 1587 1588 if (check_rulestate(PFCTL_STATE_FILTER)) 1589 YYERROR; 1590 1591 for (i = $3; i; i = i->next) { 1592 bzero(&r, sizeof(r)); 1593 1594 r.action = PF_DROP; 1595 r.direction = PF_IN; 1596 r.log = $2.log; 1597 r.logif = $2.logif; 1598 r.quick = $2.quick; 1599 r.af = $4; 1600 r.ridentifier = $5.ridentifier; 1601 if (rule_label(&r, $5.label)) 1602 YYERROR; 1603 r.rtableid = $5.rtableid; 1604 j = calloc(1, sizeof(struct node_if)); 1605 if (j == NULL) 1606 err(1, "antispoof: calloc"); 1607 if (strlcpy(j->ifname, i->ifname, 1608 sizeof(j->ifname)) >= sizeof(j->ifname)) { 1609 free(j); 1610 yyerror("interface name too long"); 1611 YYERROR; 1612 } 1613 j->not = 1; 1614 if (i->dynamic) { 1615 h = calloc(1, sizeof(*h)); 1616 if (h == NULL) 1617 err(1, "address: calloc"); 1618 h->addr.type = PF_ADDR_DYNIFTL; 1619 set_ipmask(h, 128); 1620 if (strlcpy(h->addr.v.ifname, i->ifname, 1621 sizeof(h->addr.v.ifname)) >= 1622 sizeof(h->addr.v.ifname)) { 1623 free(h); 1624 yyerror( 1625 "interface name too long"); 1626 YYERROR; 1627 } 1628 hh = malloc(sizeof(*hh)); 1629 if (hh == NULL) 1630 err(1, "address: malloc"); 1631 bcopy(h, hh, sizeof(*hh)); 1632 h->addr.iflags = PFI_AFLAG_NETWORK; 1633 } else { 1634 h = ifa_lookup(j->ifname, 1635 PFI_AFLAG_NETWORK); 1636 hh = NULL; 1637 } 1638 1639 if (h != NULL) 1640 expand_rule(&r, j, NULL, NULL, NULL, NULL, h, 1641 NULL, NULL, NULL, NULL, NULL, 1642 NULL, NULL, ""); 1643 1644 if ((i->ifa_flags & IFF_LOOPBACK) == 0) { 1645 bzero(&r, sizeof(r)); 1646 1647 r.action = PF_DROP; 1648 r.direction = PF_IN; 1649 r.log = $2.log; 1650 r.logif = $2.logif; 1651 r.quick = $2.quick; 1652 r.af = $4; 1653 r.ridentifier = $5.ridentifier; 1654 if (rule_label(&r, $5.label)) 1655 YYERROR; 1656 r.rtableid = $5.rtableid; 1657 if (hh != NULL) 1658 h = hh; 1659 else 1660 h = ifa_lookup(i->ifname, 0); 1661 if (h != NULL) 1662 expand_rule(&r, NULL, NULL, NULL, 1663 NULL, NULL, h, NULL, NULL, 1664 NULL, NULL, NULL, NULL, NULL, ""); 1665 } else 1666 free(hh); 1667 } 1668 for (int i = 0; i < PF_RULE_MAX_LABEL_COUNT; i++) 1669 free($5.label[i]); 1670 } 1671 ; 1672 1673 antispoof_ifspc : FOR antispoof_if { $$ = $2; } 1674 | FOR '{' optnl antispoof_iflst '}' { $$ = $4; } 1675 ; 1676 1677 antispoof_iflst : antispoof_if optnl { $$ = $1; } 1678 | antispoof_iflst comma antispoof_if optnl { 1679 $1->tail->next = $3; 1680 $1->tail = $3; 1681 $$ = $1; 1682 } 1683 ; 1684 1685 antispoof_if : if_item { $$ = $1; } 1686 | '(' if_item ')' { 1687 $2->dynamic = 1; 1688 $$ = $2; 1689 } 1690 ; 1691 1692 antispoof_opts : { 1693 bzero(&antispoof_opts, sizeof antispoof_opts); 1694 antispoof_opts.rtableid = -1; 1695 } 1696 antispoof_opts_l 1697 { $$ = antispoof_opts; } 1698 | /* empty */ { 1699 bzero(&antispoof_opts, sizeof antispoof_opts); 1700 antispoof_opts.rtableid = -1; 1701 $$ = antispoof_opts; 1702 } 1703 ; 1704 1705 antispoof_opts_l : antispoof_opts_l antispoof_opt 1706 | antispoof_opt 1707 ; 1708 1709 antispoof_opt : label { 1710 if (antispoof_opts.labelcount >= PF_RULE_MAX_LABEL_COUNT) { 1711 yyerror("label can only be used %d times", PF_RULE_MAX_LABEL_COUNT); 1712 YYERROR; 1713 } 1714 antispoof_opts.label[antispoof_opts.labelcount++] = $1; 1715 } 1716 | RIDENTIFIER number { 1717 antispoof_opts.ridentifier = $2; 1718 } 1719 | RTABLE NUMBER { 1720 if ($2 < 0 || $2 > rt_tableid_max()) { 1721 yyerror("invalid rtable id"); 1722 YYERROR; 1723 } 1724 antispoof_opts.rtableid = $2; 1725 } 1726 ; 1727 1728 not : '!' { $$ = 1; } 1729 | /* empty */ { $$ = 0; } 1730 ; 1731 1732 tabledef : TABLE '<' STRING '>' table_opts { 1733 struct node_host *h, *nh; 1734 struct node_tinit *ti, *nti; 1735 1736 if (strlen($3) >= PF_TABLE_NAME_SIZE) { 1737 yyerror("table name too long, max %d chars", 1738 PF_TABLE_NAME_SIZE - 1); 1739 free($3); 1740 YYERROR; 1741 } 1742 if (pf->loadopt & PFCTL_FLAG_TABLE) 1743 if (process_tabledef($3, &$5)) { 1744 free($3); 1745 YYERROR; 1746 } 1747 free($3); 1748 for (ti = SIMPLEQ_FIRST(&$5.init_nodes); 1749 ti != SIMPLEQ_END(&$5.init_nodes); ti = nti) { 1750 if (ti->file) 1751 free(ti->file); 1752 for (h = ti->host; h != NULL; h = nh) { 1753 nh = h->next; 1754 free(h); 1755 } 1756 nti = SIMPLEQ_NEXT(ti, entries); 1757 free(ti); 1758 } 1759 } 1760 ; 1761 1762 table_opts : { 1763 bzero(&table_opts, sizeof table_opts); 1764 SIMPLEQ_INIT(&table_opts.init_nodes); 1765 } 1766 table_opts_l 1767 { $$ = table_opts; } 1768 | /* empty */ 1769 { 1770 bzero(&table_opts, sizeof table_opts); 1771 SIMPLEQ_INIT(&table_opts.init_nodes); 1772 $$ = table_opts; 1773 } 1774 ; 1775 1776 table_opts_l : table_opts_l table_opt 1777 | table_opt 1778 ; 1779 1780 table_opt : STRING { 1781 if (!strcmp($1, "const")) 1782 table_opts.flags |= PFR_TFLAG_CONST; 1783 else if (!strcmp($1, "persist")) 1784 table_opts.flags |= PFR_TFLAG_PERSIST; 1785 else if (!strcmp($1, "counters")) 1786 table_opts.flags |= PFR_TFLAG_COUNTERS; 1787 else { 1788 yyerror("invalid table option '%s'", $1); 1789 free($1); 1790 YYERROR; 1791 } 1792 free($1); 1793 } 1794 | '{' optnl '}' { table_opts.init_addr = 1; } 1795 | '{' optnl host_list '}' { 1796 struct node_host *n; 1797 struct node_tinit *ti; 1798 1799 for (n = $3; n != NULL; n = n->next) { 1800 switch (n->addr.type) { 1801 case PF_ADDR_ADDRMASK: 1802 continue; /* ok */ 1803 case PF_ADDR_RANGE: 1804 yyerror("address ranges are not " 1805 "permitted inside tables"); 1806 break; 1807 case PF_ADDR_DYNIFTL: 1808 yyerror("dynamic addresses are not " 1809 "permitted inside tables"); 1810 break; 1811 case PF_ADDR_TABLE: 1812 yyerror("tables cannot contain tables"); 1813 break; 1814 case PF_ADDR_NOROUTE: 1815 yyerror("\"no-route\" is not permitted " 1816 "inside tables"); 1817 break; 1818 case PF_ADDR_URPFFAILED: 1819 yyerror("\"urpf-failed\" is not " 1820 "permitted inside tables"); 1821 break; 1822 default: 1823 yyerror("unknown address type %d", 1824 n->addr.type); 1825 } 1826 YYERROR; 1827 } 1828 if (!(ti = calloc(1, sizeof(*ti)))) 1829 err(1, "table_opt: calloc"); 1830 ti->host = $3; 1831 SIMPLEQ_INSERT_TAIL(&table_opts.init_nodes, ti, 1832 entries); 1833 table_opts.init_addr = 1; 1834 } 1835 | FILENAME STRING { 1836 struct node_tinit *ti; 1837 1838 if (!(ti = calloc(1, sizeof(*ti)))) 1839 err(1, "table_opt: calloc"); 1840 ti->file = $2; 1841 SIMPLEQ_INSERT_TAIL(&table_opts.init_nodes, ti, 1842 entries); 1843 table_opts.init_addr = 1; 1844 } 1845 ; 1846 1847 altqif : ALTQ interface queue_opts QUEUE qassign { 1848 struct pf_altq a; 1849 1850 if (check_rulestate(PFCTL_STATE_QUEUE)) 1851 YYERROR; 1852 1853 memset(&a, 0, sizeof(a)); 1854 if ($3.scheduler.qtype == ALTQT_NONE) { 1855 yyerror("no scheduler specified!"); 1856 YYERROR; 1857 } 1858 a.scheduler = $3.scheduler.qtype; 1859 a.qlimit = $3.qlimit; 1860 a.tbrsize = $3.tbrsize; 1861 if ($5 == NULL && $3.scheduler.qtype != ALTQT_CODEL) { 1862 yyerror("no child queues specified"); 1863 YYERROR; 1864 } 1865 if (expand_altq(&a, $2, $5, $3.queue_bwspec, 1866 &$3.scheduler)) 1867 YYERROR; 1868 } 1869 ; 1870 1871 queuespec : QUEUE STRING interface queue_opts qassign { 1872 struct pf_altq a; 1873 1874 if (check_rulestate(PFCTL_STATE_QUEUE)) { 1875 free($2); 1876 YYERROR; 1877 } 1878 1879 memset(&a, 0, sizeof(a)); 1880 1881 if (strlcpy(a.qname, $2, sizeof(a.qname)) >= 1882 sizeof(a.qname)) { 1883 yyerror("queue name too long (max " 1884 "%d chars)", PF_QNAME_SIZE-1); 1885 free($2); 1886 YYERROR; 1887 } 1888 free($2); 1889 if ($4.tbrsize) { 1890 yyerror("cannot specify tbrsize for queue"); 1891 YYERROR; 1892 } 1893 if ($4.priority > 255) { 1894 yyerror("priority out of range: max 255"); 1895 YYERROR; 1896 } 1897 a.priority = $4.priority; 1898 a.qlimit = $4.qlimit; 1899 a.scheduler = $4.scheduler.qtype; 1900 if (expand_queue(&a, $3, $5, $4.queue_bwspec, 1901 &$4.scheduler)) { 1902 yyerror("errors in queue definition"); 1903 YYERROR; 1904 } 1905 } 1906 ; 1907 1908 queue_opts : { 1909 bzero(&queue_opts, sizeof queue_opts); 1910 queue_opts.priority = DEFAULT_PRIORITY; 1911 queue_opts.qlimit = DEFAULT_QLIMIT; 1912 queue_opts.scheduler.qtype = ALTQT_NONE; 1913 queue_opts.queue_bwspec.bw_percent = 100; 1914 } 1915 queue_opts_l 1916 { $$ = queue_opts; } 1917 | /* empty */ { 1918 bzero(&queue_opts, sizeof queue_opts); 1919 queue_opts.priority = DEFAULT_PRIORITY; 1920 queue_opts.qlimit = DEFAULT_QLIMIT; 1921 queue_opts.scheduler.qtype = ALTQT_NONE; 1922 queue_opts.queue_bwspec.bw_percent = 100; 1923 $$ = queue_opts; 1924 } 1925 ; 1926 1927 queue_opts_l : queue_opts_l queue_opt 1928 | queue_opt 1929 ; 1930 1931 queue_opt : BANDWIDTH bandwidth { 1932 if (queue_opts.marker & QOM_BWSPEC) { 1933 yyerror("bandwidth cannot be respecified"); 1934 YYERROR; 1935 } 1936 queue_opts.marker |= QOM_BWSPEC; 1937 queue_opts.queue_bwspec = $2; 1938 } 1939 | PRIORITY NUMBER { 1940 if (queue_opts.marker & QOM_PRIORITY) { 1941 yyerror("priority cannot be respecified"); 1942 YYERROR; 1943 } 1944 if ($2 < 0 || $2 > 255) { 1945 yyerror("priority out of range: max 255"); 1946 YYERROR; 1947 } 1948 queue_opts.marker |= QOM_PRIORITY; 1949 queue_opts.priority = $2; 1950 } 1951 | QLIMIT NUMBER { 1952 if (queue_opts.marker & QOM_QLIMIT) { 1953 yyerror("qlimit cannot be respecified"); 1954 YYERROR; 1955 } 1956 if ($2 < 0 || $2 > 65535) { 1957 yyerror("qlimit out of range: max 65535"); 1958 YYERROR; 1959 } 1960 queue_opts.marker |= QOM_QLIMIT; 1961 queue_opts.qlimit = $2; 1962 } 1963 | scheduler { 1964 if (queue_opts.marker & QOM_SCHEDULER) { 1965 yyerror("scheduler cannot be respecified"); 1966 YYERROR; 1967 } 1968 queue_opts.marker |= QOM_SCHEDULER; 1969 queue_opts.scheduler = $1; 1970 } 1971 | TBRSIZE NUMBER { 1972 if (queue_opts.marker & QOM_TBRSIZE) { 1973 yyerror("tbrsize cannot be respecified"); 1974 YYERROR; 1975 } 1976 if ($2 < 0 || $2 > UINT_MAX) { 1977 yyerror("tbrsize too big: max %u", UINT_MAX); 1978 YYERROR; 1979 } 1980 queue_opts.marker |= QOM_TBRSIZE; 1981 queue_opts.tbrsize = $2; 1982 } 1983 ; 1984 1985 bandwidth : STRING { 1986 double bps; 1987 char *cp; 1988 1989 $$.bw_percent = 0; 1990 1991 bps = strtod($1, &cp); 1992 if (cp != NULL) { 1993 if (strlen(cp) > 1) { 1994 char *cu = cp + 1; 1995 if (!strcmp(cu, "Bit") || 1996 !strcmp(cu, "B") || 1997 !strcmp(cu, "bit") || 1998 !strcmp(cu, "b")) { 1999 *cu = 0; 2000 } 2001 } 2002 if (!strcmp(cp, "b")) 2003 ; /* nothing */ 2004 else if (!strcmp(cp, "K")) 2005 bps *= 1000; 2006 else if (!strcmp(cp, "M")) 2007 bps *= 1000 * 1000; 2008 else if (!strcmp(cp, "G")) 2009 bps *= 1000 * 1000 * 1000; 2010 else if (!strcmp(cp, "%")) { 2011 if (bps < 0 || bps > 100) { 2012 yyerror("bandwidth spec " 2013 "out of range"); 2014 free($1); 2015 YYERROR; 2016 } 2017 $$.bw_percent = bps; 2018 bps = 0; 2019 } else { 2020 yyerror("unknown unit %s", cp); 2021 free($1); 2022 YYERROR; 2023 } 2024 } 2025 free($1); 2026 $$.bw_absolute = (u_int64_t)bps; 2027 } 2028 | NUMBER { 2029 if ($1 < 0 || $1 >= LLONG_MAX) { 2030 yyerror("bandwidth number too big"); 2031 YYERROR; 2032 } 2033 $$.bw_percent = 0; 2034 $$.bw_absolute = $1; 2035 } 2036 ; 2037 2038 scheduler : CBQ { 2039 $$.qtype = ALTQT_CBQ; 2040 $$.data.cbq_opts.flags = 0; 2041 } 2042 | CBQ '(' cbqflags_list ')' { 2043 $$.qtype = ALTQT_CBQ; 2044 $$.data.cbq_opts.flags = $3; 2045 } 2046 | PRIQ { 2047 $$.qtype = ALTQT_PRIQ; 2048 $$.data.priq_opts.flags = 0; 2049 } 2050 | PRIQ '(' priqflags_list ')' { 2051 $$.qtype = ALTQT_PRIQ; 2052 $$.data.priq_opts.flags = $3; 2053 } 2054 | HFSC { 2055 $$.qtype = ALTQT_HFSC; 2056 bzero(&$$.data.hfsc_opts, 2057 sizeof(struct node_hfsc_opts)); 2058 } 2059 | HFSC '(' hfsc_opts ')' { 2060 $$.qtype = ALTQT_HFSC; 2061 $$.data.hfsc_opts = $3; 2062 } 2063 | FAIRQ { 2064 $$.qtype = ALTQT_FAIRQ; 2065 bzero(&$$.data.fairq_opts, 2066 sizeof(struct node_fairq_opts)); 2067 } 2068 | FAIRQ '(' fairq_opts ')' { 2069 $$.qtype = ALTQT_FAIRQ; 2070 $$.data.fairq_opts = $3; 2071 } 2072 | CODEL { 2073 $$.qtype = ALTQT_CODEL; 2074 bzero(&$$.data.codel_opts, 2075 sizeof(struct codel_opts)); 2076 } 2077 | CODEL '(' codel_opts ')' { 2078 $$.qtype = ALTQT_CODEL; 2079 $$.data.codel_opts = $3; 2080 } 2081 ; 2082 2083 cbqflags_list : cbqflags_item { $$ |= $1; } 2084 | cbqflags_list comma cbqflags_item { $$ |= $3; } 2085 ; 2086 2087 cbqflags_item : STRING { 2088 if (!strcmp($1, "default")) 2089 $$ = CBQCLF_DEFCLASS; 2090 else if (!strcmp($1, "borrow")) 2091 $$ = CBQCLF_BORROW; 2092 else if (!strcmp($1, "red")) 2093 $$ = CBQCLF_RED; 2094 else if (!strcmp($1, "ecn")) 2095 $$ = CBQCLF_RED|CBQCLF_ECN; 2096 else if (!strcmp($1, "rio")) 2097 $$ = CBQCLF_RIO; 2098 else if (!strcmp($1, "codel")) 2099 $$ = CBQCLF_CODEL; 2100 else { 2101 yyerror("unknown cbq flag \"%s\"", $1); 2102 free($1); 2103 YYERROR; 2104 } 2105 free($1); 2106 } 2107 ; 2108 2109 priqflags_list : priqflags_item { $$ |= $1; } 2110 | priqflags_list comma priqflags_item { $$ |= $3; } 2111 ; 2112 2113 priqflags_item : STRING { 2114 if (!strcmp($1, "default")) 2115 $$ = PRCF_DEFAULTCLASS; 2116 else if (!strcmp($1, "red")) 2117 $$ = PRCF_RED; 2118 else if (!strcmp($1, "ecn")) 2119 $$ = PRCF_RED|PRCF_ECN; 2120 else if (!strcmp($1, "rio")) 2121 $$ = PRCF_RIO; 2122 else if (!strcmp($1, "codel")) 2123 $$ = PRCF_CODEL; 2124 else { 2125 yyerror("unknown priq flag \"%s\"", $1); 2126 free($1); 2127 YYERROR; 2128 } 2129 free($1); 2130 } 2131 ; 2132 2133 hfsc_opts : { 2134 bzero(&hfsc_opts, 2135 sizeof(struct node_hfsc_opts)); 2136 } 2137 hfscopts_list { 2138 $$ = hfsc_opts; 2139 } 2140 ; 2141 2142 hfscopts_list : hfscopts_item 2143 | hfscopts_list comma hfscopts_item 2144 ; 2145 2146 hfscopts_item : LINKSHARE bandwidth { 2147 if (hfsc_opts.linkshare.used) { 2148 yyerror("linkshare already specified"); 2149 YYERROR; 2150 } 2151 hfsc_opts.linkshare.m2 = $2; 2152 hfsc_opts.linkshare.used = 1; 2153 } 2154 | LINKSHARE '(' bandwidth comma NUMBER comma bandwidth ')' 2155 { 2156 if ($5 < 0 || $5 > INT_MAX) { 2157 yyerror("timing in curve out of range"); 2158 YYERROR; 2159 } 2160 if (hfsc_opts.linkshare.used) { 2161 yyerror("linkshare already specified"); 2162 YYERROR; 2163 } 2164 hfsc_opts.linkshare.m1 = $3; 2165 hfsc_opts.linkshare.d = $5; 2166 hfsc_opts.linkshare.m2 = $7; 2167 hfsc_opts.linkshare.used = 1; 2168 } 2169 | REALTIME bandwidth { 2170 if (hfsc_opts.realtime.used) { 2171 yyerror("realtime already specified"); 2172 YYERROR; 2173 } 2174 hfsc_opts.realtime.m2 = $2; 2175 hfsc_opts.realtime.used = 1; 2176 } 2177 | REALTIME '(' bandwidth comma NUMBER comma bandwidth ')' 2178 { 2179 if ($5 < 0 || $5 > INT_MAX) { 2180 yyerror("timing in curve out of range"); 2181 YYERROR; 2182 } 2183 if (hfsc_opts.realtime.used) { 2184 yyerror("realtime already specified"); 2185 YYERROR; 2186 } 2187 hfsc_opts.realtime.m1 = $3; 2188 hfsc_opts.realtime.d = $5; 2189 hfsc_opts.realtime.m2 = $7; 2190 hfsc_opts.realtime.used = 1; 2191 } 2192 | UPPERLIMIT bandwidth { 2193 if (hfsc_opts.upperlimit.used) { 2194 yyerror("upperlimit already specified"); 2195 YYERROR; 2196 } 2197 hfsc_opts.upperlimit.m2 = $2; 2198 hfsc_opts.upperlimit.used = 1; 2199 } 2200 | UPPERLIMIT '(' bandwidth comma NUMBER comma bandwidth ')' 2201 { 2202 if ($5 < 0 || $5 > INT_MAX) { 2203 yyerror("timing in curve out of range"); 2204 YYERROR; 2205 } 2206 if (hfsc_opts.upperlimit.used) { 2207 yyerror("upperlimit already specified"); 2208 YYERROR; 2209 } 2210 hfsc_opts.upperlimit.m1 = $3; 2211 hfsc_opts.upperlimit.d = $5; 2212 hfsc_opts.upperlimit.m2 = $7; 2213 hfsc_opts.upperlimit.used = 1; 2214 } 2215 | STRING { 2216 if (!strcmp($1, "default")) 2217 hfsc_opts.flags |= HFCF_DEFAULTCLASS; 2218 else if (!strcmp($1, "red")) 2219 hfsc_opts.flags |= HFCF_RED; 2220 else if (!strcmp($1, "ecn")) 2221 hfsc_opts.flags |= HFCF_RED|HFCF_ECN; 2222 else if (!strcmp($1, "rio")) 2223 hfsc_opts.flags |= HFCF_RIO; 2224 else if (!strcmp($1, "codel")) 2225 hfsc_opts.flags |= HFCF_CODEL; 2226 else { 2227 yyerror("unknown hfsc flag \"%s\"", $1); 2228 free($1); 2229 YYERROR; 2230 } 2231 free($1); 2232 } 2233 ; 2234 2235 fairq_opts : { 2236 bzero(&fairq_opts, 2237 sizeof(struct node_fairq_opts)); 2238 } 2239 fairqopts_list { 2240 $$ = fairq_opts; 2241 } 2242 ; 2243 2244 fairqopts_list : fairqopts_item 2245 | fairqopts_list comma fairqopts_item 2246 ; 2247 2248 fairqopts_item : LINKSHARE bandwidth { 2249 if (fairq_opts.linkshare.used) { 2250 yyerror("linkshare already specified"); 2251 YYERROR; 2252 } 2253 fairq_opts.linkshare.m2 = $2; 2254 fairq_opts.linkshare.used = 1; 2255 } 2256 | LINKSHARE '(' bandwidth number bandwidth ')' { 2257 if (fairq_opts.linkshare.used) { 2258 yyerror("linkshare already specified"); 2259 YYERROR; 2260 } 2261 fairq_opts.linkshare.m1 = $3; 2262 fairq_opts.linkshare.d = $4; 2263 fairq_opts.linkshare.m2 = $5; 2264 fairq_opts.linkshare.used = 1; 2265 } 2266 | HOGS bandwidth { 2267 fairq_opts.hogs_bw = $2; 2268 } 2269 | BUCKETS number { 2270 fairq_opts.nbuckets = $2; 2271 } 2272 | STRING { 2273 if (!strcmp($1, "default")) 2274 fairq_opts.flags |= FARF_DEFAULTCLASS; 2275 else if (!strcmp($1, "red")) 2276 fairq_opts.flags |= FARF_RED; 2277 else if (!strcmp($1, "ecn")) 2278 fairq_opts.flags |= FARF_RED|FARF_ECN; 2279 else if (!strcmp($1, "rio")) 2280 fairq_opts.flags |= FARF_RIO; 2281 else if (!strcmp($1, "codel")) 2282 fairq_opts.flags |= FARF_CODEL; 2283 else { 2284 yyerror("unknown fairq flag \"%s\"", $1); 2285 free($1); 2286 YYERROR; 2287 } 2288 free($1); 2289 } 2290 ; 2291 2292 codel_opts : { 2293 bzero(&codel_opts, 2294 sizeof(struct codel_opts)); 2295 } 2296 codelopts_list { 2297 $$ = codel_opts; 2298 } 2299 ; 2300 2301 codelopts_list : codelopts_item 2302 | codelopts_list comma codelopts_item 2303 ; 2304 2305 codelopts_item : INTERVAL number { 2306 if (codel_opts.interval) { 2307 yyerror("interval already specified"); 2308 YYERROR; 2309 } 2310 codel_opts.interval = $2; 2311 } 2312 | TARGET number { 2313 if (codel_opts.target) { 2314 yyerror("target already specified"); 2315 YYERROR; 2316 } 2317 codel_opts.target = $2; 2318 } 2319 | STRING { 2320 if (!strcmp($1, "ecn")) 2321 codel_opts.ecn = 1; 2322 else { 2323 yyerror("unknown codel option \"%s\"", $1); 2324 free($1); 2325 YYERROR; 2326 } 2327 free($1); 2328 } 2329 ; 2330 2331 qassign : /* empty */ { $$ = NULL; } 2332 | qassign_item { $$ = $1; } 2333 | '{' optnl qassign_list '}' { $$ = $3; } 2334 ; 2335 2336 qassign_list : qassign_item optnl { $$ = $1; } 2337 | qassign_list comma qassign_item optnl { 2338 $1->tail->next = $3; 2339 $1->tail = $3; 2340 $$ = $1; 2341 } 2342 ; 2343 2344 qassign_item : STRING { 2345 $$ = calloc(1, sizeof(struct node_queue)); 2346 if ($$ == NULL) 2347 err(1, "qassign_item: calloc"); 2348 if (strlcpy($$->queue, $1, sizeof($$->queue)) >= 2349 sizeof($$->queue)) { 2350 yyerror("queue name '%s' too long (max " 2351 "%d chars)", $1, sizeof($$->queue)-1); 2352 free($1); 2353 free($$); 2354 YYERROR; 2355 } 2356 free($1); 2357 $$->next = NULL; 2358 $$->tail = $$; 2359 } 2360 ; 2361 2362 pfrule : action dir logquick interface route af proto fromto 2363 filter_opts 2364 { 2365 struct pfctl_rule r; 2366 struct node_state_opt *o; 2367 struct node_proto *proto; 2368 int srctrack = 0; 2369 int statelock = 0; 2370 int adaptive = 0; 2371 int defaults = 0; 2372 2373 if (check_rulestate(PFCTL_STATE_FILTER)) 2374 YYERROR; 2375 2376 memset(&r, 0, sizeof(r)); 2377 2378 r.action = $1.b1; 2379 switch ($1.b2) { 2380 case PFRULE_RETURNRST: 2381 r.rule_flag |= PFRULE_RETURNRST; 2382 r.return_ttl = $1.w; 2383 break; 2384 case PFRULE_RETURNICMP: 2385 r.rule_flag |= PFRULE_RETURNICMP; 2386 r.return_icmp = $1.w; 2387 r.return_icmp6 = $1.w2; 2388 break; 2389 case PFRULE_RETURN: 2390 r.rule_flag |= PFRULE_RETURN; 2391 r.return_icmp = $1.w; 2392 r.return_icmp6 = $1.w2; 2393 break; 2394 } 2395 r.direction = $2; 2396 r.log = $3.log; 2397 r.logif = $3.logif; 2398 r.quick = $3.quick; 2399 r.prob = $9.prob; 2400 r.rtableid = $9.rtableid; 2401 2402 if ($9.nodf) 2403 r.scrub_flags |= PFSTATE_NODF; 2404 if ($9.randomid) 2405 r.scrub_flags |= PFSTATE_RANDOMID; 2406 if ($9.minttl) 2407 r.min_ttl = $9.minttl; 2408 if ($9.max_mss) 2409 r.max_mss = $9.max_mss; 2410 if ($9.marker & FOM_SETTOS) { 2411 r.scrub_flags |= PFSTATE_SETTOS; 2412 r.set_tos = $9.settos; 2413 } 2414 if ($9.marker & FOM_SCRUB_TCP) 2415 r.scrub_flags |= PFSTATE_SCRUB_TCP; 2416 2417 if ($9.marker & FOM_PRIO) { 2418 if ($9.prio == 0) 2419 r.prio = PF_PRIO_ZERO; 2420 else 2421 r.prio = $9.prio; 2422 } 2423 if ($9.marker & FOM_SETPRIO) { 2424 r.set_prio[0] = $9.set_prio[0]; 2425 r.set_prio[1] = $9.set_prio[1]; 2426 r.scrub_flags |= PFSTATE_SETPRIO; 2427 } 2428 2429 if ($9.marker & FOM_AFTO) { 2430 if (!$6) { 2431 yyerror("must indicate source address " 2432 "family with af-to"); 2433 YYERROR; 2434 } 2435 if ($6 == $9.nat.af) { 2436 yyerror("incorrect address family " 2437 "translation"); 2438 YYERROR; 2439 } 2440 } 2441 2442 r.af = $6; 2443 if ($9.tag) 2444 if (strlcpy(r.tagname, $9.tag, 2445 PF_TAG_NAME_SIZE) >= PF_TAG_NAME_SIZE) { 2446 yyerror("tag too long, max %u chars", 2447 PF_TAG_NAME_SIZE - 1); 2448 YYERROR; 2449 } 2450 if ($9.match_tag) 2451 if (strlcpy(r.match_tagname, $9.match_tag, 2452 PF_TAG_NAME_SIZE) >= PF_TAG_NAME_SIZE) { 2453 yyerror("tag too long, max %u chars", 2454 PF_TAG_NAME_SIZE - 1); 2455 YYERROR; 2456 } 2457 r.match_tag_not = $9.match_tag_not; 2458 if (rule_label(&r, $9.label)) 2459 YYERROR; 2460 for (int i = 0; i < PF_RULE_MAX_LABEL_COUNT; i++) 2461 free($9.label[i]); 2462 r.ridentifier = $9.ridentifier; 2463 r.flags = $9.flags.b1; 2464 r.flagset = $9.flags.b2; 2465 if (($9.flags.b1 & $9.flags.b2) != $9.flags.b1) { 2466 yyerror("flags always false"); 2467 YYERROR; 2468 } 2469 if ($9.flags.b1 || $9.flags.b2 || $8.src_os) { 2470 for (proto = $7; proto != NULL && 2471 proto->proto != IPPROTO_TCP; 2472 proto = proto->next) 2473 ; /* nothing */ 2474 if (proto == NULL && $7 != NULL) { 2475 if ($9.flags.b1 || $9.flags.b2) 2476 yyerror( 2477 "flags only apply to tcp"); 2478 if ($8.src_os) 2479 yyerror( 2480 "OS fingerprinting only " 2481 "apply to tcp"); 2482 YYERROR; 2483 } 2484 #if 0 2485 if (($9.flags.b1 & parse_flags("S")) == 0 && 2486 $8.src_os) { 2487 yyerror("OS fingerprinting requires " 2488 "the SYN TCP flag (flags S/SA)"); 2489 YYERROR; 2490 } 2491 #endif 2492 } 2493 2494 r.tos = $9.tos; 2495 r.keep_state = $9.keep.action; 2496 o = $9.keep.options; 2497 2498 /* 'keep state' by default on pass rules. */ 2499 if (!r.keep_state && !r.action && 2500 !($9.marker & FOM_KEEP)) { 2501 r.keep_state = PF_STATE_NORMAL; 2502 o = keep_state_defaults; 2503 defaults = 1; 2504 } 2505 2506 while (o) { 2507 struct node_state_opt *p = o; 2508 2509 switch (o->type) { 2510 case PF_STATE_OPT_MAX: 2511 if (r.max_states) { 2512 yyerror("state option 'max' " 2513 "multiple definitions"); 2514 YYERROR; 2515 } 2516 r.max_states = o->data.max_states; 2517 break; 2518 case PF_STATE_OPT_NOSYNC: 2519 if (r.rule_flag & PFRULE_NOSYNC) { 2520 yyerror("state option 'sync' " 2521 "multiple definitions"); 2522 YYERROR; 2523 } 2524 r.rule_flag |= PFRULE_NOSYNC; 2525 break; 2526 case PF_STATE_OPT_SRCTRACK: 2527 if (srctrack) { 2528 yyerror("state option " 2529 "'source-track' " 2530 "multiple definitions"); 2531 YYERROR; 2532 } 2533 srctrack = o->data.src_track; 2534 r.rule_flag |= PFRULE_SRCTRACK; 2535 break; 2536 case PF_STATE_OPT_MAX_SRC_STATES: 2537 if (r.max_src_states) { 2538 yyerror("state option " 2539 "'max-src-states' " 2540 "multiple definitions"); 2541 YYERROR; 2542 } 2543 if (o->data.max_src_states == 0) { 2544 yyerror("'max-src-states' must " 2545 "be > 0"); 2546 YYERROR; 2547 } 2548 r.max_src_states = 2549 o->data.max_src_states; 2550 r.rule_flag |= PFRULE_SRCTRACK; 2551 break; 2552 case PF_STATE_OPT_OVERLOAD: 2553 if (r.overload_tblname[0]) { 2554 yyerror("multiple 'overload' " 2555 "table definitions"); 2556 YYERROR; 2557 } 2558 if (strlcpy(r.overload_tblname, 2559 o->data.overload.tblname, 2560 PF_TABLE_NAME_SIZE) >= 2561 PF_TABLE_NAME_SIZE) { 2562 yyerror("state option: " 2563 "strlcpy"); 2564 YYERROR; 2565 } 2566 r.flush = o->data.overload.flush; 2567 break; 2568 case PF_STATE_OPT_MAX_SRC_CONN: 2569 if (r.max_src_conn) { 2570 yyerror("state option " 2571 "'max-src-conn' " 2572 "multiple definitions"); 2573 YYERROR; 2574 } 2575 if (o->data.max_src_conn == 0) { 2576 yyerror("'max-src-conn' " 2577 "must be > 0"); 2578 YYERROR; 2579 } 2580 r.max_src_conn = 2581 o->data.max_src_conn; 2582 r.rule_flag |= PFRULE_SRCTRACK | 2583 PFRULE_RULESRCTRACK; 2584 break; 2585 case PF_STATE_OPT_MAX_SRC_CONN_RATE: 2586 if (r.max_src_conn_rate.limit) { 2587 yyerror("state option " 2588 "'max-src-conn-rate' " 2589 "multiple definitions"); 2590 YYERROR; 2591 } 2592 if (!o->data.max_src_conn_rate.limit || 2593 !o->data.max_src_conn_rate.seconds) { 2594 yyerror("'max-src-conn-rate' " 2595 "values must be > 0"); 2596 YYERROR; 2597 } 2598 if (o->data.max_src_conn_rate.limit > 2599 PF_THRESHOLD_MAX) { 2600 yyerror("'max-src-conn-rate' " 2601 "maximum rate must be < %u", 2602 PF_THRESHOLD_MAX); 2603 YYERROR; 2604 } 2605 r.max_src_conn_rate.limit = 2606 o->data.max_src_conn_rate.limit; 2607 r.max_src_conn_rate.seconds = 2608 o->data.max_src_conn_rate.seconds; 2609 r.rule_flag |= PFRULE_SRCTRACK | 2610 PFRULE_RULESRCTRACK; 2611 break; 2612 case PF_STATE_OPT_MAX_SRC_NODES: 2613 if (r.max_src_nodes) { 2614 yyerror("state option " 2615 "'max-src-nodes' " 2616 "multiple definitions"); 2617 YYERROR; 2618 } 2619 if (o->data.max_src_nodes == 0) { 2620 yyerror("'max-src-nodes' must " 2621 "be > 0"); 2622 YYERROR; 2623 } 2624 r.max_src_nodes = 2625 o->data.max_src_nodes; 2626 r.rule_flag |= PFRULE_SRCTRACK | 2627 PFRULE_RULESRCTRACK; 2628 break; 2629 case PF_STATE_OPT_STATELOCK: 2630 if (statelock) { 2631 yyerror("state locking option: " 2632 "multiple definitions"); 2633 YYERROR; 2634 } 2635 statelock = 1; 2636 r.rule_flag |= o->data.statelock; 2637 break; 2638 case PF_STATE_OPT_SLOPPY: 2639 if (r.rule_flag & PFRULE_STATESLOPPY) { 2640 yyerror("state sloppy option: " 2641 "multiple definitions"); 2642 YYERROR; 2643 } 2644 r.rule_flag |= PFRULE_STATESLOPPY; 2645 break; 2646 case PF_STATE_OPT_PFLOW: 2647 if (r.rule_flag & PFRULE_PFLOW) { 2648 yyerror("state pflow option: " 2649 "multiple definitions"); 2650 YYERROR; 2651 } 2652 r.rule_flag |= PFRULE_PFLOW; 2653 break; 2654 case PF_STATE_OPT_TIMEOUT: 2655 if (o->data.timeout.number == 2656 PFTM_ADAPTIVE_START || 2657 o->data.timeout.number == 2658 PFTM_ADAPTIVE_END) 2659 adaptive = 1; 2660 if (r.timeout[o->data.timeout.number]) { 2661 yyerror("state timeout %s " 2662 "multiple definitions", 2663 pf_timeouts[o->data. 2664 timeout.number].name); 2665 YYERROR; 2666 } 2667 r.timeout[o->data.timeout.number] = 2668 o->data.timeout.seconds; 2669 } 2670 o = o->next; 2671 if (!defaults) 2672 free(p); 2673 } 2674 2675 /* 'flags S/SA' by default on stateful rules */ 2676 if (!r.action && !r.flags && !r.flagset && 2677 !$9.fragment && !($9.marker & FOM_FLAGS) && 2678 r.keep_state) { 2679 r.flags = parse_flags("S"); 2680 r.flagset = parse_flags("SA"); 2681 } 2682 if (!adaptive && r.max_states) { 2683 r.timeout[PFTM_ADAPTIVE_START] = 2684 (r.max_states / 10) * 6; 2685 r.timeout[PFTM_ADAPTIVE_END] = 2686 (r.max_states / 10) * 12; 2687 } 2688 if (r.rule_flag & PFRULE_SRCTRACK) { 2689 if (srctrack == PF_SRCTRACK_GLOBAL && 2690 r.max_src_nodes) { 2691 yyerror("'max-src-nodes' is " 2692 "incompatible with " 2693 "'source-track global'"); 2694 YYERROR; 2695 } 2696 if (srctrack == PF_SRCTRACK_GLOBAL && 2697 r.max_src_conn) { 2698 yyerror("'max-src-conn' is " 2699 "incompatible with " 2700 "'source-track global'"); 2701 YYERROR; 2702 } 2703 if (srctrack == PF_SRCTRACK_GLOBAL && 2704 r.max_src_conn_rate.seconds) { 2705 yyerror("'max-src-conn-rate' is " 2706 "incompatible with " 2707 "'source-track global'"); 2708 YYERROR; 2709 } 2710 if (r.timeout[PFTM_SRC_NODE] < 2711 r.max_src_conn_rate.seconds) 2712 r.timeout[PFTM_SRC_NODE] = 2713 r.max_src_conn_rate.seconds; 2714 r.rule_flag |= PFRULE_SRCTRACK; 2715 if (srctrack == PF_SRCTRACK_RULE) 2716 r.rule_flag |= PFRULE_RULESRCTRACK; 2717 } 2718 if (r.keep_state && !statelock) 2719 r.rule_flag |= default_statelock; 2720 2721 if ($9.fragment) 2722 r.rule_flag |= PFRULE_FRAGMENT; 2723 r.allow_opts = $9.allowopts; 2724 2725 decide_address_family($8.src.host, &r.af); 2726 decide_address_family($8.dst.host, &r.af); 2727 r.naf = r.af; 2728 2729 if ($5.rt) { 2730 if (!r.direction) { 2731 yyerror("direction must be explicit " 2732 "with rules that specify routing"); 2733 YYERROR; 2734 } 2735 r.rt = $5.rt; 2736 r.rpool.opts = $5.pool_opts; 2737 if ($5.key != NULL) 2738 memcpy(&r.rpool.key, $5.key, 2739 sizeof(struct pf_poolhashkey)); 2740 } 2741 if (r.rt) { 2742 decide_address_family($5.host, &r.af); 2743 remove_invalid_hosts(&$5.host, &r.af); 2744 if ($5.host == NULL) { 2745 yyerror("no routing address with " 2746 "matching address family found."); 2747 YYERROR; 2748 } 2749 if ((r.rpool.opts & PF_POOL_TYPEMASK) == 2750 PF_POOL_NONE && ($5.host->next != NULL || 2751 $5.host->addr.type == PF_ADDR_TABLE || 2752 DYNIF_MULTIADDR($5.host->addr))) 2753 r.rpool.opts |= PF_POOL_ROUNDROBIN; 2754 if ((r.rpool.opts & PF_POOL_TYPEMASK) != 2755 PF_POOL_ROUNDROBIN && 2756 disallow_table($5.host, "tables are only " 2757 "supported in round-robin routing pools")) 2758 YYERROR; 2759 if ((r.rpool.opts & PF_POOL_TYPEMASK) != 2760 PF_POOL_ROUNDROBIN && 2761 disallow_alias($5.host, "interface (%s) " 2762 "is only supported in round-robin " 2763 "routing pools")) 2764 YYERROR; 2765 if ($5.host->next != NULL) { 2766 if ((r.rpool.opts & PF_POOL_TYPEMASK) != 2767 PF_POOL_ROUNDROBIN) { 2768 yyerror("r.rpool.opts must " 2769 "be PF_POOL_ROUNDROBIN"); 2770 YYERROR; 2771 } 2772 } 2773 } 2774 if ($9.queues.qname != NULL) { 2775 if (strlcpy(r.qname, $9.queues.qname, 2776 sizeof(r.qname)) >= sizeof(r.qname)) { 2777 yyerror("rule qname too long (max " 2778 "%d chars)", sizeof(r.qname)-1); 2779 YYERROR; 2780 } 2781 free($9.queues.qname); 2782 } 2783 if ($9.queues.pqname != NULL) { 2784 if (strlcpy(r.pqname, $9.queues.pqname, 2785 sizeof(r.pqname)) >= sizeof(r.pqname)) { 2786 yyerror("rule pqname too long (max " 2787 "%d chars)", sizeof(r.pqname)-1); 2788 YYERROR; 2789 } 2790 free($9.queues.pqname); 2791 } 2792 #ifdef __FreeBSD__ 2793 r.divert.port = $9.divert.port; 2794 #else 2795 if ((r.divert.port = $9.divert.port)) { 2796 if (r.direction == PF_OUT) { 2797 if ($9.divert.addr) { 2798 yyerror("address specified " 2799 "for outgoing divert"); 2800 YYERROR; 2801 } 2802 bzero(&r.divert.addr, 2803 sizeof(r.divert.addr)); 2804 } else { 2805 if (!$9.divert.addr) { 2806 yyerror("no address specified " 2807 "for incoming divert"); 2808 YYERROR; 2809 } 2810 if ($9.divert.addr->af != r.af) { 2811 yyerror("address family " 2812 "mismatch for divert"); 2813 YYERROR; 2814 } 2815 r.divert.addr = 2816 $9.divert.addr->addr.v.a.addr; 2817 } 2818 } 2819 #endif 2820 2821 if ($9.dnpipe || $9.dnrpipe) { 2822 r.dnpipe = $9.dnpipe; 2823 r.dnrpipe = $9.dnrpipe; 2824 if ($9.free_flags & PFRULE_DN_IS_PIPE) 2825 r.free_flags |= PFRULE_DN_IS_PIPE; 2826 else 2827 r.free_flags |= PFRULE_DN_IS_QUEUE; 2828 } 2829 2830 if ($9.marker & FOM_AFTO) { 2831 r.naf = $9.nat.af; 2832 2833 r.nat.opts = $9.nat.pool_opts.type; 2834 r.nat.opts |= $9.nat.pool_opts.opts; 2835 2836 if ((r.nat.opts & PF_POOL_TYPEMASK) != 2837 PF_POOL_ROUNDROBIN && 2838 disallow_table($9.nat.rdr->host, "tables are only " 2839 "supported in round-robin pools")) 2840 YYERROR; 2841 } 2842 2843 expand_rule(&r, $4, $5.host, $9.nat.rdr ? $9.nat.rdr->host : NULL, 2844 $7, $8.src_os, $8.src.host, $8.src.port, $8.dst.host, 2845 $8.dst.port, $9.uid, $9.gid, $9.rcv, $9.icmpspec, ""); 2846 } 2847 ; 2848 2849 filter_opts : { 2850 bzero(&filter_opts, sizeof filter_opts); 2851 filter_opts.rtableid = -1; 2852 } 2853 filter_opts_l 2854 { $$ = filter_opts; } 2855 | /* empty */ { 2856 bzero(&filter_opts, sizeof filter_opts); 2857 filter_opts.rtableid = -1; 2858 $$ = filter_opts; 2859 } 2860 ; 2861 2862 filter_opts_l : filter_opts_l filter_opt 2863 | filter_opt 2864 ; 2865 2866 filter_opt : USER uids { 2867 if (filter_opts.uid) 2868 $2->tail->next = filter_opts.uid; 2869 filter_opts.uid = $2; 2870 } 2871 | GROUP gids { 2872 if (filter_opts.gid) 2873 $2->tail->next = filter_opts.gid; 2874 filter_opts.gid = $2; 2875 } 2876 | flags { 2877 if (filter_opts.marker & FOM_FLAGS) { 2878 yyerror("flags cannot be redefined"); 2879 YYERROR; 2880 } 2881 filter_opts.marker |= FOM_FLAGS; 2882 filter_opts.flags.b1 |= $1.b1; 2883 filter_opts.flags.b2 |= $1.b2; 2884 filter_opts.flags.w |= $1.w; 2885 filter_opts.flags.w2 |= $1.w2; 2886 } 2887 | icmpspec { 2888 if (filter_opts.marker & FOM_ICMP) { 2889 yyerror("icmp-type cannot be redefined"); 2890 YYERROR; 2891 } 2892 filter_opts.marker |= FOM_ICMP; 2893 filter_opts.icmpspec = $1; 2894 } 2895 | PRIO NUMBER { 2896 if (filter_opts.marker & FOM_PRIO) { 2897 yyerror("prio cannot be redefined"); 2898 YYERROR; 2899 } 2900 if ($2 < 0 || $2 > PF_PRIO_MAX) { 2901 yyerror("prio must be 0 - %u", PF_PRIO_MAX); 2902 YYERROR; 2903 } 2904 filter_opts.marker |= FOM_PRIO; 2905 filter_opts.prio = $2; 2906 } 2907 | TOS tos { 2908 if (filter_opts.marker & FOM_TOS) { 2909 yyerror("tos cannot be redefined"); 2910 YYERROR; 2911 } 2912 filter_opts.marker |= FOM_TOS; 2913 filter_opts.tos = $2; 2914 } 2915 | keep { 2916 if (filter_opts.marker & FOM_KEEP) { 2917 yyerror("modulate or keep cannot be redefined"); 2918 YYERROR; 2919 } 2920 filter_opts.marker |= FOM_KEEP; 2921 filter_opts.keep.action = $1.action; 2922 filter_opts.keep.options = $1.options; 2923 } 2924 | RIDENTIFIER number { 2925 filter_opts.ridentifier = $2; 2926 } 2927 | FRAGMENT { 2928 filter_opts.fragment = 1; 2929 } 2930 | ALLOWOPTS { 2931 filter_opts.allowopts = 1; 2932 } 2933 | label { 2934 if (filter_opts.labelcount >= PF_RULE_MAX_LABEL_COUNT) { 2935 yyerror("label can only be used %d times", PF_RULE_MAX_LABEL_COUNT); 2936 YYERROR; 2937 } 2938 filter_opts.label[filter_opts.labelcount++] = $1; 2939 } 2940 | qname { 2941 if (filter_opts.queues.qname) { 2942 yyerror("queue cannot be redefined"); 2943 YYERROR; 2944 } 2945 filter_opts.queues = $1; 2946 } 2947 | DNPIPE number { 2948 filter_opts.dnpipe = $2; 2949 filter_opts.free_flags |= PFRULE_DN_IS_PIPE; 2950 } 2951 | DNPIPE '(' number ')' { 2952 filter_opts.dnpipe = $3; 2953 filter_opts.free_flags |= PFRULE_DN_IS_PIPE; 2954 } 2955 | DNPIPE '(' number comma number ')' { 2956 filter_opts.dnrpipe = $5; 2957 filter_opts.dnpipe = $3; 2958 filter_opts.free_flags |= PFRULE_DN_IS_PIPE; 2959 } 2960 | DNQUEUE number { 2961 filter_opts.dnpipe = $2; 2962 filter_opts.free_flags |= PFRULE_DN_IS_QUEUE; 2963 } 2964 | DNQUEUE '(' number comma number ')' { 2965 filter_opts.dnrpipe = $5; 2966 filter_opts.dnpipe = $3; 2967 filter_opts.free_flags |= PFRULE_DN_IS_QUEUE; 2968 } 2969 | DNQUEUE '(' number ')' { 2970 filter_opts.dnpipe = $3; 2971 filter_opts.free_flags |= PFRULE_DN_IS_QUEUE; 2972 } 2973 | TAG string { 2974 filter_opts.tag = $2; 2975 } 2976 | not TAGGED string { 2977 filter_opts.match_tag = $3; 2978 filter_opts.match_tag_not = $1; 2979 } 2980 | RECEIVEDON if_item { 2981 if (filter_opts.rcv) { 2982 yyerror("cannot respecify received-on"); 2983 YYERROR; 2984 } 2985 filter_opts.rcv = $2; 2986 } 2987 | PROBABILITY probability { 2988 double p; 2989 2990 p = floor($2 * UINT_MAX + 0.5); 2991 if (p < 0.0 || p > UINT_MAX) { 2992 yyerror("invalid probability: %lf", p); 2993 YYERROR; 2994 } 2995 filter_opts.prob = (u_int32_t)p; 2996 if (filter_opts.prob == 0) 2997 filter_opts.prob = 1; 2998 } 2999 | RTABLE NUMBER { 3000 if ($2 < 0 || $2 > rt_tableid_max()) { 3001 yyerror("invalid rtable id"); 3002 YYERROR; 3003 } 3004 filter_opts.rtableid = $2; 3005 } 3006 | DIVERTTO portplain { 3007 #ifdef __FreeBSD__ 3008 filter_opts.divert.port = $2.a; 3009 if (!filter_opts.divert.port) { 3010 yyerror("invalid divert port: %u", ntohs($2.a)); 3011 YYERROR; 3012 } 3013 #endif 3014 } 3015 | DIVERTTO STRING PORT portplain { 3016 #ifndef __FreeBSD__ 3017 if ((filter_opts.divert.addr = host($2)) == NULL) { 3018 yyerror("could not parse divert address: %s", 3019 $2); 3020 free($2); 3021 YYERROR; 3022 } 3023 #else 3024 if ($2) 3025 #endif 3026 free($2); 3027 filter_opts.divert.port = $4.a; 3028 if (!filter_opts.divert.port) { 3029 yyerror("invalid divert port: %u", ntohs($4.a)); 3030 YYERROR; 3031 } 3032 } 3033 | DIVERTREPLY { 3034 #ifdef __FreeBSD__ 3035 yyerror("divert-reply has no meaning in FreeBSD pf(4)"); 3036 YYERROR; 3037 #else 3038 filter_opts.divert.port = 1; /* some random value */ 3039 #endif 3040 } 3041 | SCRUB '(' scrub_opts ')' { 3042 filter_opts.nodf = $3.nodf; 3043 filter_opts.minttl = $3.minttl; 3044 if ($3.marker & FOM_SETTOS) { 3045 /* Old style rules are "scrub set-tos 0x42" 3046 * New style are "set tos 0x42 scrub (...)" 3047 * What is in "scrub(...)"" is unfortunately the 3048 * original scrub syntax so it would overwrite 3049 * "set tos" of a pass/match rule. 3050 */ 3051 filter_opts.settos = $3.settos; 3052 } 3053 filter_opts.randomid = $3.randomid; 3054 filter_opts.max_mss = $3.maxmss; 3055 if ($3.reassemble_tcp) 3056 filter_opts.marker |= FOM_SCRUB_TCP; 3057 filter_opts.marker |= $3.marker; 3058 } 3059 | AFTO af FROM redirspec pool_opts { 3060 if (filter_opts.nat.rdr) { 3061 yyerror("cannot respecify af-to"); 3062 YYERROR; 3063 } 3064 if ($2 == 0) { 3065 yyerror("no address family specified"); 3066 YYERROR; 3067 } 3068 if ($4->af && $4->af != $2) { 3069 yyerror("af-to addresses must be in the " 3070 "target address family"); 3071 YYERROR; 3072 } 3073 filter_opts.nat.af = $2; 3074 filter_opts.nat.rdr = calloc(1, sizeof(struct redirection)); 3075 if (filter_opts.nat.rdr == NULL) 3076 err(1, "af-to: calloc"); 3077 filter_opts.nat.rdr->host = $4; 3078 memcpy(&filter_opts.nat.pool_opts, &$5, 3079 sizeof(filter_opts.nat.pool_opts)); 3080 filter_opts.rdr.rdr = 3081 calloc(1, sizeof(struct redirection)); 3082 bzero(&filter_opts.rdr.pool_opts, 3083 sizeof(filter_opts.rdr.pool_opts)); 3084 filter_opts.marker |= FOM_AFTO; 3085 } 3086 | AFTO af FROM redirspec pool_opts TO redirspec pool_opts { 3087 if (filter_opts.nat.rdr) { 3088 yyerror("cannot respecify af-to"); 3089 YYERROR; 3090 } 3091 if ($2 == 0) { 3092 yyerror("no address family specified"); 3093 YYERROR; 3094 } 3095 if (($4->af && $4->af != $2) || 3096 ($7->af && $7->af != $2)) { 3097 yyerror("af-to addresses must be in the " 3098 "target address family"); 3099 YYERROR; 3100 } 3101 filter_opts.nat.af = $2; 3102 filter_opts.nat.rdr = calloc(1, sizeof(struct redirection)); 3103 if (filter_opts.nat.rdr == NULL) 3104 err(1, "af-to: calloc"); 3105 filter_opts.nat.rdr->host = $4; 3106 memcpy(&filter_opts.nat.pool_opts, &$5, 3107 sizeof(filter_opts.nat.pool_opts)); 3108 filter_opts.rdr.af = $2; 3109 filter_opts.rdr.rdr = calloc(1, sizeof(struct redirection)); 3110 if (filter_opts.rdr.rdr == NULL) 3111 err(1, "af-to: calloc"); 3112 filter_opts.rdr.rdr->host = $7; 3113 memcpy(&filter_opts.nat.pool_opts, &$8, 3114 sizeof(filter_opts.nat.pool_opts)); 3115 filter_opts.marker |= FOM_AFTO; 3116 } 3117 | filter_sets 3118 ; 3119 3120 filter_sets : SET '(' filter_sets_l ')' { $$ = filter_opts; } 3121 | SET filter_set { $$ = filter_opts; } 3122 ; 3123 3124 filter_sets_l : filter_sets_l comma filter_set 3125 | filter_set 3126 ; 3127 3128 filter_set : prio { 3129 if (filter_opts.marker & FOM_SETPRIO) { 3130 yyerror("prio cannot be redefined"); 3131 YYERROR; 3132 } 3133 filter_opts.marker |= FOM_SETPRIO; 3134 filter_opts.set_prio[0] = $1.b1; 3135 filter_opts.set_prio[1] = $1.b2; 3136 } 3137 | TOS tos { 3138 if (filter_opts.marker & FOM_SETTOS) { 3139 yyerror("tos cannot be respecified"); 3140 YYERROR; 3141 } 3142 filter_opts.marker |= FOM_SETTOS; 3143 filter_opts.settos = $2; 3144 } 3145 prio : PRIO NUMBER { 3146 if ($2 < 0 || $2 > PF_PRIO_MAX) { 3147 yyerror("prio must be 0 - %u", PF_PRIO_MAX); 3148 YYERROR; 3149 } 3150 $$.b1 = $$.b2 = $2; 3151 } 3152 | PRIO '(' NUMBER comma NUMBER ')' { 3153 if ($3 < 0 || $3 > PF_PRIO_MAX || 3154 $5 < 0 || $5 > PF_PRIO_MAX) { 3155 yyerror("prio must be 0 - %u", PF_PRIO_MAX); 3156 YYERROR; 3157 } 3158 $$.b1 = $3; 3159 $$.b2 = $5; 3160 } 3161 ; 3162 3163 probability : STRING { 3164 char *e; 3165 double p = strtod($1, &e); 3166 3167 if (*e == '%') { 3168 p *= 0.01; 3169 e++; 3170 } 3171 if (*e) { 3172 yyerror("invalid probability: %s", $1); 3173 free($1); 3174 YYERROR; 3175 } 3176 free($1); 3177 $$ = p; 3178 } 3179 | NUMBER { 3180 $$ = (double)$1; 3181 } 3182 ; 3183 3184 3185 action : PASS { 3186 $$.b1 = PF_PASS; 3187 $$.b2 = failpolicy; 3188 $$.w = returnicmpdefault; 3189 $$.w2 = returnicmp6default; 3190 } 3191 | MATCH { $$.b1 = PF_MATCH; $$.b2 = $$.w = 0; } 3192 | BLOCK blockspec { $$ = $2; $$.b1 = PF_DROP; } 3193 ; 3194 3195 blockspec : /* empty */ { 3196 $$.b2 = blockpolicy; 3197 $$.w = returnicmpdefault; 3198 $$.w2 = returnicmp6default; 3199 } 3200 | DROP { 3201 $$.b2 = PFRULE_DROP; 3202 $$.w = 0; 3203 $$.w2 = 0; 3204 } 3205 | RETURNRST { 3206 $$.b2 = PFRULE_RETURNRST; 3207 $$.w = 0; 3208 $$.w2 = 0; 3209 } 3210 | RETURNRST '(' TTL NUMBER ')' { 3211 if ($4 < 0 || $4 > 255) { 3212 yyerror("illegal ttl value %d", $4); 3213 YYERROR; 3214 } 3215 $$.b2 = PFRULE_RETURNRST; 3216 $$.w = $4; 3217 $$.w2 = 0; 3218 } 3219 | RETURNICMP { 3220 $$.b2 = PFRULE_RETURNICMP; 3221 $$.w = returnicmpdefault; 3222 $$.w2 = returnicmp6default; 3223 } 3224 | RETURNICMP6 { 3225 $$.b2 = PFRULE_RETURNICMP; 3226 $$.w = returnicmpdefault; 3227 $$.w2 = returnicmp6default; 3228 } 3229 | RETURNICMP '(' reticmpspec ')' { 3230 $$.b2 = PFRULE_RETURNICMP; 3231 $$.w = $3; 3232 $$.w2 = returnicmpdefault; 3233 } 3234 | RETURNICMP6 '(' reticmp6spec ')' { 3235 $$.b2 = PFRULE_RETURNICMP; 3236 $$.w = returnicmpdefault; 3237 $$.w2 = $3; 3238 } 3239 | RETURNICMP '(' reticmpspec comma reticmp6spec ')' { 3240 $$.b2 = PFRULE_RETURNICMP; 3241 $$.w = $3; 3242 $$.w2 = $5; 3243 } 3244 | RETURN { 3245 $$.b2 = PFRULE_RETURN; 3246 $$.w = returnicmpdefault; 3247 $$.w2 = returnicmp6default; 3248 } 3249 ; 3250 3251 reticmpspec : STRING { 3252 if (!($$ = parseicmpspec($1, AF_INET))) { 3253 free($1); 3254 YYERROR; 3255 } 3256 free($1); 3257 } 3258 | NUMBER { 3259 u_int8_t icmptype; 3260 3261 if ($1 < 0 || $1 > 255) { 3262 yyerror("invalid icmp code %lu", $1); 3263 YYERROR; 3264 } 3265 icmptype = returnicmpdefault >> 8; 3266 $$ = (icmptype << 8 | $1); 3267 } 3268 ; 3269 3270 reticmp6spec : STRING { 3271 if (!($$ = parseicmpspec($1, AF_INET6))) { 3272 free($1); 3273 YYERROR; 3274 } 3275 free($1); 3276 } 3277 | NUMBER { 3278 u_int8_t icmptype; 3279 3280 if ($1 < 0 || $1 > 255) { 3281 yyerror("invalid icmp code %lu", $1); 3282 YYERROR; 3283 } 3284 icmptype = returnicmp6default >> 8; 3285 $$ = (icmptype << 8 | $1); 3286 } 3287 ; 3288 3289 dir : /* empty */ { $$ = PF_INOUT; } 3290 | IN { $$ = PF_IN; } 3291 | OUT { $$ = PF_OUT; } 3292 ; 3293 3294 quick : /* empty */ { $$.quick = 0; } 3295 | QUICK { $$.quick = 1; } 3296 ; 3297 3298 logquick : /* empty */ { $$.log = 0; $$.quick = 0; $$.logif = 0; } 3299 | log { $$ = $1; $$.quick = 0; } 3300 | QUICK { $$.quick = 1; $$.log = 0; $$.logif = 0; } 3301 | log QUICK { $$ = $1; $$.quick = 1; } 3302 | QUICK log { $$ = $2; $$.quick = 1; } 3303 ; 3304 3305 log : LOG { $$.log = PF_LOG; $$.logif = 0; } 3306 | LOG '(' logopts ')' { 3307 $$.log = PF_LOG | $3.log; 3308 $$.logif = $3.logif; 3309 } 3310 ; 3311 3312 logopts : logopt { $$ = $1; } 3313 | logopts comma logopt { 3314 $$.log = $1.log | $3.log; 3315 $$.logif = $3.logif; 3316 if ($$.logif == 0) 3317 $$.logif = $1.logif; 3318 } 3319 ; 3320 3321 logopt : ALL { $$.log = PF_LOG_ALL; $$.logif = 0; } 3322 | MATCHES { $$.log = PF_LOG_MATCHES; $$.logif = 0; } 3323 | USER { $$.log = PF_LOG_SOCKET_LOOKUP; $$.logif = 0; } 3324 | GROUP { $$.log = PF_LOG_SOCKET_LOOKUP; $$.logif = 0; } 3325 | TO string { 3326 const char *errstr; 3327 u_int i; 3328 3329 $$.log = 0; 3330 if (strncmp($2, "pflog", 5)) { 3331 yyerror("%s: should be a pflog interface", $2); 3332 free($2); 3333 YYERROR; 3334 } 3335 i = strtonum($2 + 5, 0, 255, &errstr); 3336 if (errstr) { 3337 yyerror("%s: %s", $2, errstr); 3338 free($2); 3339 YYERROR; 3340 } 3341 free($2); 3342 $$.logif = i; 3343 } 3344 ; 3345 3346 interface : /* empty */ { $$ = NULL; } 3347 | ON if_item_not { $$ = $2; } 3348 | ON '{' optnl if_list '}' { $$ = $4; } 3349 ; 3350 3351 if_list : if_item_not optnl { $$ = $1; } 3352 | if_list comma if_item_not optnl { 3353 $1->tail->next = $3; 3354 $1->tail = $3; 3355 $$ = $1; 3356 } 3357 ; 3358 3359 if_item_not : not if_item { $$ = $2; $$->not = $1; } 3360 ; 3361 3362 if_item : STRING { 3363 struct node_host *n; 3364 3365 $$ = calloc(1, sizeof(struct node_if)); 3366 if ($$ == NULL) 3367 err(1, "if_item: calloc"); 3368 if (strlcpy($$->ifname, $1, sizeof($$->ifname)) >= 3369 sizeof($$->ifname)) { 3370 free($1); 3371 free($$); 3372 yyerror("interface name too long"); 3373 YYERROR; 3374 } 3375 3376 if ((n = ifa_exists($1)) != NULL) 3377 $$->ifa_flags = n->ifa_flags; 3378 3379 free($1); 3380 $$->not = 0; 3381 $$->next = NULL; 3382 $$->tail = $$; 3383 } 3384 ; 3385 3386 af : /* empty */ { $$ = 0; } 3387 | INET { $$ = AF_INET; } 3388 | INET6 { $$ = AF_INET6; } 3389 ; 3390 3391 etherproto : /* empty */ { $$ = NULL; } 3392 | PROTO etherproto_item { $$ = $2; } 3393 | PROTO '{' optnl etherproto_list '}' { $$ = $4; } 3394 ; 3395 3396 etherproto_list : etherproto_item optnl { $$ = $1; } 3397 | etherproto_list comma etherproto_item optnl { 3398 $1->tail->next = $3; 3399 $1->tail = $3; 3400 $$ = $1; 3401 } 3402 ; 3403 3404 etherproto_item : etherprotoval { 3405 u_int16_t pr; 3406 3407 pr = (u_int16_t)$1; 3408 if (pr == 0) { 3409 yyerror("proto 0 cannot be used"); 3410 YYERROR; 3411 } 3412 $$ = calloc(1, sizeof(struct node_proto)); 3413 if ($$ == NULL) 3414 err(1, "proto_item: calloc"); 3415 $$->proto = pr; 3416 $$->next = NULL; 3417 $$->tail = $$; 3418 } 3419 ; 3420 3421 etherprotoval : NUMBER { 3422 if ($1 < 0 || $1 > 65565) { 3423 yyerror("protocol outside range"); 3424 YYERROR; 3425 } 3426 } 3427 | STRING 3428 { 3429 if (!strncmp($1, "0x", 2)) { 3430 if (sscanf($1, "0x%4x", &$$) != 1) { 3431 free($1); 3432 yyerror("invalid EtherType hex"); 3433 YYERROR; 3434 } 3435 } else { 3436 yyerror("Symbolic EtherType not yet supported"); 3437 } 3438 } 3439 ; 3440 3441 proto : /* empty */ { $$ = NULL; } 3442 | PROTO proto_item { $$ = $2; } 3443 | PROTO '{' optnl proto_list '}' { $$ = $4; } 3444 ; 3445 3446 proto_list : proto_item optnl { $$ = $1; } 3447 | proto_list comma proto_item optnl { 3448 $1->tail->next = $3; 3449 $1->tail = $3; 3450 $$ = $1; 3451 } 3452 ; 3453 3454 proto_item : protoval { 3455 u_int8_t pr; 3456 3457 pr = (u_int8_t)$1; 3458 if (pr == 0) { 3459 yyerror("proto 0 cannot be used"); 3460 YYERROR; 3461 } 3462 $$ = calloc(1, sizeof(struct node_proto)); 3463 if ($$ == NULL) 3464 err(1, "proto_item: calloc"); 3465 $$->proto = pr; 3466 $$->next = NULL; 3467 $$->tail = $$; 3468 } 3469 ; 3470 3471 protoval : STRING { 3472 struct protoent *p; 3473 3474 p = getprotobyname($1); 3475 if (p == NULL) { 3476 yyerror("unknown protocol %s", $1); 3477 free($1); 3478 YYERROR; 3479 } 3480 $$ = p->p_proto; 3481 free($1); 3482 } 3483 | NUMBER { 3484 if ($1 < 0 || $1 > 255) { 3485 yyerror("protocol outside range"); 3486 YYERROR; 3487 } 3488 } 3489 ; 3490 3491 l3fromto : /* empty */ { 3492 bzero(&$$, sizeof($$)); 3493 } 3494 | L3 fromto { 3495 if ($2.src.host != NULL && 3496 $2.src.host->addr.type != PF_ADDR_ADDRMASK && 3497 $2.src.host->addr.type != PF_ADDR_TABLE) { 3498 yyerror("from must be an address or table"); 3499 YYERROR; 3500 } 3501 if ($2.dst.host != NULL && 3502 $2.dst.host->addr.type != PF_ADDR_ADDRMASK && 3503 $2.dst.host->addr.type != PF_ADDR_TABLE) { 3504 yyerror("to must be an address or table"); 3505 YYERROR; 3506 } 3507 $$ = $2; 3508 } 3509 ; 3510 etherfromto : ALL { 3511 $$.src = NULL; 3512 $$.dst = NULL; 3513 } 3514 | etherfrom etherto { 3515 $$.src = $1.mac; 3516 $$.dst = $2.mac; 3517 } 3518 ; 3519 3520 etherfrom : /* emtpy */ { 3521 bzero(&$$, sizeof($$)); 3522 } 3523 | FROM macspec { 3524 $$.mac = $2; 3525 } 3526 ; 3527 3528 etherto : /* empty */ { 3529 bzero(&$$, sizeof($$)); 3530 } 3531 | TO macspec { 3532 $$.mac = $2; 3533 } 3534 ; 3535 3536 mac : string '/' NUMBER { 3537 $$ = node_mac_from_string_masklen($1, $3); 3538 free($1); 3539 if ($$ == NULL) 3540 YYERROR; 3541 } 3542 | string { 3543 if (strchr($1, '&')) { 3544 /* mac&mask */ 3545 char *mac = strtok($1, "&"); 3546 char *mask = strtok(NULL, "&"); 3547 $$ = node_mac_from_string_mask(mac, mask); 3548 } else { 3549 $$ = node_mac_from_string($1); 3550 } 3551 free($1); 3552 if ($$ == NULL) 3553 YYERROR; 3554 3555 } 3556 xmac : not mac { 3557 struct node_mac *n; 3558 3559 for (n = $2; n != NULL; n = n->next) 3560 n->neg = $1; 3561 $$ = $2; 3562 } 3563 ; 3564 macspec : xmac { 3565 $$ = $1; 3566 } 3567 | '{' optnl mac_list '}' 3568 { 3569 $$ = $3; 3570 } 3571 ; 3572 mac_list : xmac optnl { 3573 $$ = $1; 3574 } 3575 | mac_list comma xmac { 3576 if ($3 == NULL) 3577 $$ = $1; 3578 else if ($1 == NULL) 3579 $$ = $3; 3580 else { 3581 $1->tail->next = $3; 3582 $1->tail = $3->tail; 3583 $$ = $1; 3584 } 3585 } 3586 3587 fromto : ALL { 3588 $$.src.host = NULL; 3589 $$.src.port = NULL; 3590 $$.dst.host = NULL; 3591 $$.dst.port = NULL; 3592 $$.src_os = NULL; 3593 } 3594 | from os to { 3595 $$.src = $1; 3596 $$.src_os = $2; 3597 $$.dst = $3; 3598 } 3599 ; 3600 3601 os : /* empty */ { $$ = NULL; } 3602 | OS xos { $$ = $2; } 3603 | OS '{' optnl os_list '}' { $$ = $4; } 3604 ; 3605 3606 xos : STRING { 3607 $$ = calloc(1, sizeof(struct node_os)); 3608 if ($$ == NULL) 3609 err(1, "os: calloc"); 3610 $$->os = $1; 3611 $$->tail = $$; 3612 } 3613 ; 3614 3615 os_list : xos optnl { $$ = $1; } 3616 | os_list comma xos optnl { 3617 $1->tail->next = $3; 3618 $1->tail = $3; 3619 $$ = $1; 3620 } 3621 ; 3622 3623 from : /* empty */ { 3624 $$.host = NULL; 3625 $$.port = NULL; 3626 } 3627 | FROM ipportspec { 3628 $$ = $2; 3629 } 3630 ; 3631 3632 to : /* empty */ { 3633 $$.host = NULL; 3634 $$.port = NULL; 3635 } 3636 | TO ipportspec { 3637 if (disallow_urpf_failed($2.host, "\"urpf-failed\" is " 3638 "not permitted in a destination address")) 3639 YYERROR; 3640 $$ = $2; 3641 } 3642 ; 3643 3644 ipportspec : ipspec { 3645 $$.host = $1; 3646 $$.port = NULL; 3647 } 3648 | ipspec PORT portspec { 3649 $$.host = $1; 3650 $$.port = $3; 3651 } 3652 | PORT portspec { 3653 $$.host = NULL; 3654 $$.port = $2; 3655 } 3656 ; 3657 3658 optnl : '\n' optnl 3659 | 3660 ; 3661 3662 ipspec : ANY { $$ = NULL; } 3663 | xhost { $$ = $1; } 3664 | '{' optnl host_list '}' { $$ = $3; } 3665 ; 3666 3667 toipspec : TO ipspec { $$ = $2; } 3668 | /* empty */ { $$ = NULL; } 3669 ; 3670 3671 host_list : ipspec optnl { $$ = $1; } 3672 | host_list comma ipspec optnl { 3673 if ($1 == NULL) { 3674 freehostlist($3); 3675 $$ = $1; 3676 } else if ($3 == NULL) { 3677 freehostlist($1); 3678 $$ = $3; 3679 } else { 3680 $1->tail->next = $3; 3681 $1->tail = $3->tail; 3682 $$ = $1; 3683 } 3684 } 3685 ; 3686 3687 xhost : not host { 3688 struct node_host *n; 3689 3690 for (n = $2; n != NULL; n = n->next) 3691 n->not = $1; 3692 $$ = $2; 3693 } 3694 | not NOROUTE { 3695 $$ = calloc(1, sizeof(struct node_host)); 3696 if ($$ == NULL) 3697 err(1, "xhost: calloc"); 3698 $$->addr.type = PF_ADDR_NOROUTE; 3699 $$->next = NULL; 3700 $$->not = $1; 3701 $$->tail = $$; 3702 } 3703 | not URPFFAILED { 3704 $$ = calloc(1, sizeof(struct node_host)); 3705 if ($$ == NULL) 3706 err(1, "xhost: calloc"); 3707 $$->addr.type = PF_ADDR_URPFFAILED; 3708 $$->next = NULL; 3709 $$->not = $1; 3710 $$->tail = $$; 3711 } 3712 ; 3713 3714 host : STRING { 3715 if (($$ = host($1)) == NULL) { 3716 /* error. "any" is handled elsewhere */ 3717 free($1); 3718 yyerror("could not parse host specification"); 3719 YYERROR; 3720 } 3721 free($1); 3722 3723 } 3724 | STRING '-' STRING { 3725 struct node_host *b, *e; 3726 3727 if ((b = host($1)) == NULL || (e = host($3)) == NULL) { 3728 free($1); 3729 free($3); 3730 yyerror("could not parse host specification"); 3731 YYERROR; 3732 } 3733 if (b->af != e->af || 3734 b->addr.type != PF_ADDR_ADDRMASK || 3735 e->addr.type != PF_ADDR_ADDRMASK || 3736 unmask(&b->addr.v.a.mask, b->af) != 3737 (b->af == AF_INET ? 32 : 128) || 3738 unmask(&e->addr.v.a.mask, e->af) != 3739 (e->af == AF_INET ? 32 : 128) || 3740 b->next != NULL || b->not || 3741 e->next != NULL || e->not) { 3742 free(b); 3743 free(e); 3744 free($1); 3745 free($3); 3746 yyerror("invalid address range"); 3747 YYERROR; 3748 } 3749 memcpy(&b->addr.v.a.mask, &e->addr.v.a.addr, 3750 sizeof(b->addr.v.a.mask)); 3751 b->addr.type = PF_ADDR_RANGE; 3752 $$ = b; 3753 free(e); 3754 free($1); 3755 free($3); 3756 } 3757 | STRING '/' NUMBER { 3758 char *buf; 3759 3760 if (asprintf(&buf, "%s/%lld", $1, (long long)$3) == -1) 3761 err(1, "host: asprintf"); 3762 free($1); 3763 if (($$ = host(buf)) == NULL) { 3764 /* error. "any" is handled elsewhere */ 3765 free(buf); 3766 yyerror("could not parse host specification"); 3767 YYERROR; 3768 } 3769 free(buf); 3770 } 3771 | NUMBER '/' NUMBER { 3772 char *buf; 3773 3774 /* ie. for 10/8 parsing */ 3775 #ifdef __FreeBSD__ 3776 if (asprintf(&buf, "%lld/%lld", (long long)$1, (long long)$3) == -1) 3777 #else 3778 if (asprintf(&buf, "%lld/%lld", $1, $3) == -1) 3779 #endif 3780 err(1, "host: asprintf"); 3781 if (($$ = host(buf)) == NULL) { 3782 /* error. "any" is handled elsewhere */ 3783 free(buf); 3784 yyerror("could not parse host specification"); 3785 YYERROR; 3786 } 3787 free(buf); 3788 } 3789 | dynaddr 3790 | dynaddr '/' NUMBER { 3791 struct node_host *n; 3792 3793 if ($3 < 0 || $3 > 128) { 3794 yyerror("bit number too big"); 3795 YYERROR; 3796 } 3797 $$ = $1; 3798 for (n = $1; n != NULL; n = n->next) 3799 set_ipmask(n, $3); 3800 } 3801 | '<' STRING '>' { 3802 if (strlen($2) >= PF_TABLE_NAME_SIZE) { 3803 yyerror("table name '%s' too long", $2); 3804 free($2); 3805 YYERROR; 3806 } 3807 $$ = calloc(1, sizeof(struct node_host)); 3808 if ($$ == NULL) 3809 err(1, "host: calloc"); 3810 $$->addr.type = PF_ADDR_TABLE; 3811 if (strlcpy($$->addr.v.tblname, $2, 3812 sizeof($$->addr.v.tblname)) >= 3813 sizeof($$->addr.v.tblname)) 3814 errx(1, "host: strlcpy"); 3815 free($2); 3816 $$->next = NULL; 3817 $$->tail = $$; 3818 } 3819 ; 3820 3821 number : NUMBER 3822 | STRING { 3823 u_long ulval; 3824 3825 if (atoul($1, &ulval) == -1) { 3826 yyerror("%s is not a number", $1); 3827 free($1); 3828 YYERROR; 3829 } else 3830 $$ = ulval; 3831 free($1); 3832 } 3833 ; 3834 3835 dynaddr : '(' STRING ')' { 3836 int flags = 0; 3837 char *p, *op; 3838 3839 op = $2; 3840 if (!isalpha(op[0])) { 3841 yyerror("invalid interface name '%s'", op); 3842 free(op); 3843 YYERROR; 3844 } 3845 while ((p = strrchr($2, ':')) != NULL) { 3846 if (!strcmp(p+1, "network")) 3847 flags |= PFI_AFLAG_NETWORK; 3848 else if (!strcmp(p+1, "broadcast")) 3849 flags |= PFI_AFLAG_BROADCAST; 3850 else if (!strcmp(p+1, "peer")) 3851 flags |= PFI_AFLAG_PEER; 3852 else if (!strcmp(p+1, "0")) 3853 flags |= PFI_AFLAG_NOALIAS; 3854 else { 3855 yyerror("interface %s has bad modifier", 3856 $2); 3857 free(op); 3858 YYERROR; 3859 } 3860 *p = '\0'; 3861 } 3862 if (flags & (flags - 1) & PFI_AFLAG_MODEMASK) { 3863 free(op); 3864 yyerror("illegal combination of " 3865 "interface modifiers"); 3866 YYERROR; 3867 } 3868 $$ = calloc(1, sizeof(struct node_host)); 3869 if ($$ == NULL) 3870 err(1, "address: calloc"); 3871 $$->af = 0; 3872 set_ipmask($$, 128); 3873 $$->addr.type = PF_ADDR_DYNIFTL; 3874 $$->addr.iflags = flags; 3875 if (strlcpy($$->addr.v.ifname, $2, 3876 sizeof($$->addr.v.ifname)) >= 3877 sizeof($$->addr.v.ifname)) { 3878 free(op); 3879 free($$); 3880 yyerror("interface name too long"); 3881 YYERROR; 3882 } 3883 free(op); 3884 $$->next = NULL; 3885 $$->tail = $$; 3886 } 3887 ; 3888 3889 portspec : port_item { $$ = $1; } 3890 | '{' optnl port_list '}' { $$ = $3; } 3891 ; 3892 3893 port_list : port_item optnl { $$ = $1; } 3894 | port_list comma port_item optnl { 3895 $1->tail->next = $3; 3896 $1->tail = $3; 3897 $$ = $1; 3898 } 3899 ; 3900 3901 port_item : portrange { 3902 $$ = calloc(1, sizeof(struct node_port)); 3903 if ($$ == NULL) 3904 err(1, "port_item: calloc"); 3905 $$->port[0] = $1.a; 3906 $$->port[1] = $1.b; 3907 if ($1.t) 3908 $$->op = PF_OP_RRG; 3909 else 3910 $$->op = PF_OP_EQ; 3911 $$->next = NULL; 3912 $$->tail = $$; 3913 } 3914 | unaryop portrange { 3915 if ($2.t) { 3916 yyerror("':' cannot be used with an other " 3917 "port operator"); 3918 YYERROR; 3919 } 3920 $$ = calloc(1, sizeof(struct node_port)); 3921 if ($$ == NULL) 3922 err(1, "port_item: calloc"); 3923 $$->port[0] = $2.a; 3924 $$->port[1] = $2.b; 3925 $$->op = $1; 3926 $$->next = NULL; 3927 $$->tail = $$; 3928 } 3929 | portrange PORTBINARY portrange { 3930 if ($1.t || $3.t) { 3931 yyerror("':' cannot be used with an other " 3932 "port operator"); 3933 YYERROR; 3934 } 3935 $$ = calloc(1, sizeof(struct node_port)); 3936 if ($$ == NULL) 3937 err(1, "port_item: calloc"); 3938 $$->port[0] = $1.a; 3939 $$->port[1] = $3.a; 3940 $$->op = $2; 3941 $$->next = NULL; 3942 $$->tail = $$; 3943 } 3944 ; 3945 3946 portplain : numberstring { 3947 if (parseport($1, &$$, 0) == -1) { 3948 free($1); 3949 YYERROR; 3950 } 3951 free($1); 3952 } 3953 ; 3954 3955 portrange : numberstring { 3956 if (parseport($1, &$$, PPORT_RANGE) == -1) { 3957 free($1); 3958 YYERROR; 3959 } 3960 free($1); 3961 } 3962 ; 3963 3964 uids : uid_item { $$ = $1; } 3965 | '{' optnl uid_list '}' { $$ = $3; } 3966 ; 3967 3968 uid_list : uid_item optnl { $$ = $1; } 3969 | uid_list comma uid_item optnl { 3970 $1->tail->next = $3; 3971 $1->tail = $3; 3972 $$ = $1; 3973 } 3974 ; 3975 3976 uid_item : uid { 3977 $$ = calloc(1, sizeof(struct node_uid)); 3978 if ($$ == NULL) 3979 err(1, "uid_item: calloc"); 3980 $$->uid[0] = $1; 3981 $$->uid[1] = $1; 3982 $$->op = PF_OP_EQ; 3983 $$->next = NULL; 3984 $$->tail = $$; 3985 } 3986 | unaryop uid { 3987 if ($2 == UID_MAX && $1 != PF_OP_EQ && $1 != PF_OP_NE) { 3988 yyerror("user unknown requires operator = or " 3989 "!="); 3990 YYERROR; 3991 } 3992 $$ = calloc(1, sizeof(struct node_uid)); 3993 if ($$ == NULL) 3994 err(1, "uid_item: calloc"); 3995 $$->uid[0] = $2; 3996 $$->uid[1] = $2; 3997 $$->op = $1; 3998 $$->next = NULL; 3999 $$->tail = $$; 4000 } 4001 | uid PORTBINARY uid { 4002 if ($1 == UID_MAX || $3 == UID_MAX) { 4003 yyerror("user unknown requires operator = or " 4004 "!="); 4005 YYERROR; 4006 } 4007 $$ = calloc(1, sizeof(struct node_uid)); 4008 if ($$ == NULL) 4009 err(1, "uid_item: calloc"); 4010 $$->uid[0] = $1; 4011 $$->uid[1] = $3; 4012 $$->op = $2; 4013 $$->next = NULL; 4014 $$->tail = $$; 4015 } 4016 ; 4017 4018 uid : STRING { 4019 if (!strcmp($1, "unknown")) 4020 $$ = UID_MAX; 4021 else { 4022 struct passwd *pw; 4023 4024 if ((pw = getpwnam($1)) == NULL) { 4025 yyerror("unknown user %s", $1); 4026 free($1); 4027 YYERROR; 4028 } 4029 $$ = pw->pw_uid; 4030 } 4031 free($1); 4032 } 4033 | NUMBER { 4034 if ($1 < 0 || $1 >= UID_MAX) { 4035 yyerror("illegal uid value %lu", $1); 4036 YYERROR; 4037 } 4038 $$ = $1; 4039 } 4040 ; 4041 4042 gids : gid_item { $$ = $1; } 4043 | '{' optnl gid_list '}' { $$ = $3; } 4044 ; 4045 4046 gid_list : gid_item optnl { $$ = $1; } 4047 | gid_list comma gid_item optnl { 4048 $1->tail->next = $3; 4049 $1->tail = $3; 4050 $$ = $1; 4051 } 4052 ; 4053 4054 gid_item : gid { 4055 $$ = calloc(1, sizeof(struct node_gid)); 4056 if ($$ == NULL) 4057 err(1, "gid_item: calloc"); 4058 $$->gid[0] = $1; 4059 $$->gid[1] = $1; 4060 $$->op = PF_OP_EQ; 4061 $$->next = NULL; 4062 $$->tail = $$; 4063 } 4064 | unaryop gid { 4065 if ($2 == GID_MAX && $1 != PF_OP_EQ && $1 != PF_OP_NE) { 4066 yyerror("group unknown requires operator = or " 4067 "!="); 4068 YYERROR; 4069 } 4070 $$ = calloc(1, sizeof(struct node_gid)); 4071 if ($$ == NULL) 4072 err(1, "gid_item: calloc"); 4073 $$->gid[0] = $2; 4074 $$->gid[1] = $2; 4075 $$->op = $1; 4076 $$->next = NULL; 4077 $$->tail = $$; 4078 } 4079 | gid PORTBINARY gid { 4080 if ($1 == GID_MAX || $3 == GID_MAX) { 4081 yyerror("group unknown requires operator = or " 4082 "!="); 4083 YYERROR; 4084 } 4085 $$ = calloc(1, sizeof(struct node_gid)); 4086 if ($$ == NULL) 4087 err(1, "gid_item: calloc"); 4088 $$->gid[0] = $1; 4089 $$->gid[1] = $3; 4090 $$->op = $2; 4091 $$->next = NULL; 4092 $$->tail = $$; 4093 } 4094 ; 4095 4096 gid : STRING { 4097 if (!strcmp($1, "unknown")) 4098 $$ = GID_MAX; 4099 else { 4100 struct group *grp; 4101 4102 if ((grp = getgrnam($1)) == NULL) { 4103 yyerror("unknown group %s", $1); 4104 free($1); 4105 YYERROR; 4106 } 4107 $$ = grp->gr_gid; 4108 } 4109 free($1); 4110 } 4111 | NUMBER { 4112 if ($1 < 0 || $1 >= GID_MAX) { 4113 yyerror("illegal gid value %lu", $1); 4114 YYERROR; 4115 } 4116 $$ = $1; 4117 } 4118 ; 4119 4120 flag : STRING { 4121 int f; 4122 4123 if ((f = parse_flags($1)) < 0) { 4124 yyerror("bad flags %s", $1); 4125 free($1); 4126 YYERROR; 4127 } 4128 free($1); 4129 $$.b1 = f; 4130 } 4131 ; 4132 4133 flags : FLAGS flag '/' flag { $$.b1 = $2.b1; $$.b2 = $4.b1; } 4134 | FLAGS '/' flag { $$.b1 = 0; $$.b2 = $3.b1; } 4135 | FLAGS ANY { $$.b1 = 0; $$.b2 = 0; } 4136 ; 4137 4138 icmpspec : ICMPTYPE icmp_item { $$ = $2; } 4139 | ICMPTYPE '{' optnl icmp_list '}' { $$ = $4; } 4140 | ICMP6TYPE icmp6_item { $$ = $2; } 4141 | ICMP6TYPE '{' optnl icmp6_list '}' { $$ = $4; } 4142 ; 4143 4144 icmp_list : icmp_item optnl { $$ = $1; } 4145 | icmp_list comma icmp_item optnl { 4146 $1->tail->next = $3; 4147 $1->tail = $3; 4148 $$ = $1; 4149 } 4150 ; 4151 4152 icmp6_list : icmp6_item optnl { $$ = $1; } 4153 | icmp6_list comma icmp6_item optnl { 4154 $1->tail->next = $3; 4155 $1->tail = $3; 4156 $$ = $1; 4157 } 4158 ; 4159 4160 icmp_item : icmptype { 4161 $$ = calloc(1, sizeof(struct node_icmp)); 4162 if ($$ == NULL) 4163 err(1, "icmp_item: calloc"); 4164 $$->type = $1; 4165 $$->code = 0; 4166 $$->proto = IPPROTO_ICMP; 4167 $$->next = NULL; 4168 $$->tail = $$; 4169 } 4170 | icmptype CODE STRING { 4171 const struct icmpcodeent *p; 4172 4173 if ((p = geticmpcodebyname($1-1, $3, AF_INET)) == NULL) { 4174 yyerror("unknown icmp-code %s", $3); 4175 free($3); 4176 YYERROR; 4177 } 4178 4179 free($3); 4180 $$ = calloc(1, sizeof(struct node_icmp)); 4181 if ($$ == NULL) 4182 err(1, "icmp_item: calloc"); 4183 $$->type = $1; 4184 $$->code = p->code + 1; 4185 $$->proto = IPPROTO_ICMP; 4186 $$->next = NULL; 4187 $$->tail = $$; 4188 } 4189 | icmptype CODE NUMBER { 4190 if ($3 < 0 || $3 > 255) { 4191 yyerror("illegal icmp-code %lu", $3); 4192 YYERROR; 4193 } 4194 $$ = calloc(1, sizeof(struct node_icmp)); 4195 if ($$ == NULL) 4196 err(1, "icmp_item: calloc"); 4197 $$->type = $1; 4198 $$->code = $3 + 1; 4199 $$->proto = IPPROTO_ICMP; 4200 $$->next = NULL; 4201 $$->tail = $$; 4202 } 4203 ; 4204 4205 icmp6_item : icmp6type { 4206 $$ = calloc(1, sizeof(struct node_icmp)); 4207 if ($$ == NULL) 4208 err(1, "icmp_item: calloc"); 4209 $$->type = $1; 4210 $$->code = 0; 4211 $$->proto = IPPROTO_ICMPV6; 4212 $$->next = NULL; 4213 $$->tail = $$; 4214 } 4215 | icmp6type CODE STRING { 4216 const struct icmpcodeent *p; 4217 4218 if ((p = geticmpcodebyname($1-1, $3, AF_INET6)) == NULL) { 4219 yyerror("unknown icmp6-code %s", $3); 4220 free($3); 4221 YYERROR; 4222 } 4223 free($3); 4224 4225 $$ = calloc(1, sizeof(struct node_icmp)); 4226 if ($$ == NULL) 4227 err(1, "icmp_item: calloc"); 4228 $$->type = $1; 4229 $$->code = p->code + 1; 4230 $$->proto = IPPROTO_ICMPV6; 4231 $$->next = NULL; 4232 $$->tail = $$; 4233 } 4234 | icmp6type CODE NUMBER { 4235 if ($3 < 0 || $3 > 255) { 4236 yyerror("illegal icmp-code %lu", $3); 4237 YYERROR; 4238 } 4239 $$ = calloc(1, sizeof(struct node_icmp)); 4240 if ($$ == NULL) 4241 err(1, "icmp_item: calloc"); 4242 $$->type = $1; 4243 $$->code = $3 + 1; 4244 $$->proto = IPPROTO_ICMPV6; 4245 $$->next = NULL; 4246 $$->tail = $$; 4247 } 4248 ; 4249 4250 icmptype : STRING { 4251 const struct icmptypeent *p; 4252 4253 if ((p = geticmptypebyname($1, AF_INET)) == NULL) { 4254 yyerror("unknown icmp-type %s", $1); 4255 free($1); 4256 YYERROR; 4257 } 4258 $$ = p->type + 1; 4259 free($1); 4260 } 4261 | NUMBER { 4262 if ($1 < 0 || $1 > 255) { 4263 yyerror("illegal icmp-type %lu", $1); 4264 YYERROR; 4265 } 4266 $$ = $1 + 1; 4267 } 4268 ; 4269 4270 icmp6type : STRING { 4271 const struct icmptypeent *p; 4272 4273 if ((p = geticmptypebyname($1, AF_INET6)) == 4274 NULL) { 4275 yyerror("unknown icmp6-type %s", $1); 4276 free($1); 4277 YYERROR; 4278 } 4279 $$ = p->type + 1; 4280 free($1); 4281 } 4282 | NUMBER { 4283 if ($1 < 0 || $1 > 255) { 4284 yyerror("illegal icmp6-type %lu", $1); 4285 YYERROR; 4286 } 4287 $$ = $1 + 1; 4288 } 4289 ; 4290 4291 tos : STRING { 4292 int val; 4293 char *end; 4294 4295 if (map_tos($1, &val)) 4296 $$ = val; 4297 else if ($1[0] == '0' && $1[1] == 'x') { 4298 errno = 0; 4299 $$ = strtoul($1, &end, 16); 4300 if (errno || *end != '\0') 4301 $$ = 256; 4302 } else 4303 $$ = 256; /* flag bad argument */ 4304 if ($$ < 0 || $$ > 255) { 4305 yyerror("illegal tos value %s", $1); 4306 free($1); 4307 YYERROR; 4308 } 4309 free($1); 4310 } 4311 | NUMBER { 4312 $$ = $1; 4313 if ($$ < 0 || $$ > 255) { 4314 yyerror("illegal tos value %lu", $1); 4315 YYERROR; 4316 } 4317 } 4318 ; 4319 4320 sourcetrack : SOURCETRACK { $$ = PF_SRCTRACK; } 4321 | SOURCETRACK GLOBAL { $$ = PF_SRCTRACK_GLOBAL; } 4322 | SOURCETRACK RULE { $$ = PF_SRCTRACK_RULE; } 4323 ; 4324 4325 statelock : IFBOUND { 4326 $$ = PFRULE_IFBOUND; 4327 } 4328 | FLOATING { 4329 $$ = 0; 4330 } 4331 ; 4332 4333 keep : NO STATE { 4334 $$.action = 0; 4335 $$.options = NULL; 4336 } 4337 | KEEP STATE state_opt_spec { 4338 $$.action = PF_STATE_NORMAL; 4339 $$.options = $3; 4340 } 4341 | MODULATE STATE state_opt_spec { 4342 $$.action = PF_STATE_MODULATE; 4343 $$.options = $3; 4344 } 4345 | SYNPROXY STATE state_opt_spec { 4346 $$.action = PF_STATE_SYNPROXY; 4347 $$.options = $3; 4348 } 4349 ; 4350 4351 flush : /* empty */ { $$ = 0; } 4352 | FLUSH { $$ = PF_FLUSH; } 4353 | FLUSH GLOBAL { 4354 $$ = PF_FLUSH | PF_FLUSH_GLOBAL; 4355 } 4356 ; 4357 4358 state_opt_spec : '(' state_opt_list ')' { $$ = $2; } 4359 | /* empty */ { $$ = NULL; } 4360 ; 4361 4362 state_opt_list : state_opt_item { $$ = $1; } 4363 | state_opt_list comma state_opt_item { 4364 $1->tail->next = $3; 4365 $1->tail = $3; 4366 $$ = $1; 4367 } 4368 ; 4369 4370 state_opt_item : MAXIMUM NUMBER { 4371 if ($2 < 0 || $2 > UINT_MAX) { 4372 yyerror("only positive values permitted"); 4373 YYERROR; 4374 } 4375 $$ = calloc(1, sizeof(struct node_state_opt)); 4376 if ($$ == NULL) 4377 err(1, "state_opt_item: calloc"); 4378 $$->type = PF_STATE_OPT_MAX; 4379 $$->data.max_states = $2; 4380 $$->next = NULL; 4381 $$->tail = $$; 4382 } 4383 | NOSYNC { 4384 $$ = calloc(1, sizeof(struct node_state_opt)); 4385 if ($$ == NULL) 4386 err(1, "state_opt_item: calloc"); 4387 $$->type = PF_STATE_OPT_NOSYNC; 4388 $$->next = NULL; 4389 $$->tail = $$; 4390 } 4391 | MAXSRCSTATES NUMBER { 4392 if ($2 < 0 || $2 > UINT_MAX) { 4393 yyerror("only positive values permitted"); 4394 YYERROR; 4395 } 4396 $$ = calloc(1, sizeof(struct node_state_opt)); 4397 if ($$ == NULL) 4398 err(1, "state_opt_item: calloc"); 4399 $$->type = PF_STATE_OPT_MAX_SRC_STATES; 4400 $$->data.max_src_states = $2; 4401 $$->next = NULL; 4402 $$->tail = $$; 4403 } 4404 | MAXSRCCONN NUMBER { 4405 if ($2 < 0 || $2 > UINT_MAX) { 4406 yyerror("only positive values permitted"); 4407 YYERROR; 4408 } 4409 $$ = calloc(1, sizeof(struct node_state_opt)); 4410 if ($$ == NULL) 4411 err(1, "state_opt_item: calloc"); 4412 $$->type = PF_STATE_OPT_MAX_SRC_CONN; 4413 $$->data.max_src_conn = $2; 4414 $$->next = NULL; 4415 $$->tail = $$; 4416 } 4417 | MAXSRCCONNRATE NUMBER '/' NUMBER { 4418 if ($2 < 0 || $2 > UINT_MAX || 4419 $4 < 0 || $4 > UINT_MAX) { 4420 yyerror("only positive values permitted"); 4421 YYERROR; 4422 } 4423 $$ = calloc(1, sizeof(struct node_state_opt)); 4424 if ($$ == NULL) 4425 err(1, "state_opt_item: calloc"); 4426 $$->type = PF_STATE_OPT_MAX_SRC_CONN_RATE; 4427 $$->data.max_src_conn_rate.limit = $2; 4428 $$->data.max_src_conn_rate.seconds = $4; 4429 $$->next = NULL; 4430 $$->tail = $$; 4431 } 4432 | OVERLOAD '<' STRING '>' flush { 4433 if (strlen($3) >= PF_TABLE_NAME_SIZE) { 4434 yyerror("table name '%s' too long", $3); 4435 free($3); 4436 YYERROR; 4437 } 4438 $$ = calloc(1, sizeof(struct node_state_opt)); 4439 if ($$ == NULL) 4440 err(1, "state_opt_item: calloc"); 4441 if (strlcpy($$->data.overload.tblname, $3, 4442 PF_TABLE_NAME_SIZE) >= PF_TABLE_NAME_SIZE) 4443 errx(1, "state_opt_item: strlcpy"); 4444 free($3); 4445 $$->type = PF_STATE_OPT_OVERLOAD; 4446 $$->data.overload.flush = $5; 4447 $$->next = NULL; 4448 $$->tail = $$; 4449 } 4450 | MAXSRCNODES NUMBER { 4451 if ($2 < 0 || $2 > UINT_MAX) { 4452 yyerror("only positive values permitted"); 4453 YYERROR; 4454 } 4455 $$ = calloc(1, sizeof(struct node_state_opt)); 4456 if ($$ == NULL) 4457 err(1, "state_opt_item: calloc"); 4458 $$->type = PF_STATE_OPT_MAX_SRC_NODES; 4459 $$->data.max_src_nodes = $2; 4460 $$->next = NULL; 4461 $$->tail = $$; 4462 } 4463 | sourcetrack { 4464 $$ = calloc(1, sizeof(struct node_state_opt)); 4465 if ($$ == NULL) 4466 err(1, "state_opt_item: calloc"); 4467 $$->type = PF_STATE_OPT_SRCTRACK; 4468 $$->data.src_track = $1; 4469 $$->next = NULL; 4470 $$->tail = $$; 4471 } 4472 | statelock { 4473 $$ = calloc(1, sizeof(struct node_state_opt)); 4474 if ($$ == NULL) 4475 err(1, "state_opt_item: calloc"); 4476 $$->type = PF_STATE_OPT_STATELOCK; 4477 $$->data.statelock = $1; 4478 $$->next = NULL; 4479 $$->tail = $$; 4480 } 4481 | SLOPPY { 4482 $$ = calloc(1, sizeof(struct node_state_opt)); 4483 if ($$ == NULL) 4484 err(1, "state_opt_item: calloc"); 4485 $$->type = PF_STATE_OPT_SLOPPY; 4486 $$->next = NULL; 4487 $$->tail = $$; 4488 } 4489 | PFLOW { 4490 $$ = calloc(1, sizeof(struct node_state_opt)); 4491 if ($$ == NULL) 4492 err(1, "state_opt_item: calloc"); 4493 $$->type = PF_STATE_OPT_PFLOW; 4494 $$->next = NULL; 4495 $$->tail = $$; 4496 } 4497 | STRING NUMBER { 4498 int i; 4499 4500 if ($2 < 0 || $2 > UINT_MAX) { 4501 yyerror("only positive values permitted"); 4502 YYERROR; 4503 } 4504 for (i = 0; pf_timeouts[i].name && 4505 strcmp(pf_timeouts[i].name, $1); ++i) 4506 ; /* nothing */ 4507 if (!pf_timeouts[i].name) { 4508 yyerror("illegal timeout name %s", $1); 4509 free($1); 4510 YYERROR; 4511 } 4512 if (strchr(pf_timeouts[i].name, '.') == NULL) { 4513 yyerror("illegal state timeout %s", $1); 4514 free($1); 4515 YYERROR; 4516 } 4517 free($1); 4518 $$ = calloc(1, sizeof(struct node_state_opt)); 4519 if ($$ == NULL) 4520 err(1, "state_opt_item: calloc"); 4521 $$->type = PF_STATE_OPT_TIMEOUT; 4522 $$->data.timeout.number = pf_timeouts[i].timeout; 4523 $$->data.timeout.seconds = $2; 4524 $$->next = NULL; 4525 $$->tail = $$; 4526 } 4527 ; 4528 4529 label : LABEL STRING { 4530 $$ = $2; 4531 } 4532 ; 4533 4534 etherqname : QUEUE STRING { 4535 $$.qname = $2; 4536 } 4537 | QUEUE '(' STRING ')' { 4538 $$.qname = $3; 4539 } 4540 ; 4541 4542 qname : QUEUE STRING { 4543 $$.qname = $2; 4544 $$.pqname = NULL; 4545 } 4546 | QUEUE '(' STRING ')' { 4547 $$.qname = $3; 4548 $$.pqname = NULL; 4549 } 4550 | QUEUE '(' STRING comma STRING ')' { 4551 $$.qname = $3; 4552 $$.pqname = $5; 4553 } 4554 ; 4555 4556 no : /* empty */ { $$ = 0; } 4557 | NO { $$ = 1; } 4558 ; 4559 4560 portstar : numberstring { 4561 if (parseport($1, &$$, PPORT_RANGE|PPORT_STAR) == -1) { 4562 free($1); 4563 YYERROR; 4564 } 4565 free($1); 4566 } 4567 ; 4568 4569 redirspec : host { $$ = $1; } 4570 | '{' optnl redir_host_list '}' { $$ = $3; } 4571 ; 4572 4573 redir_host_list : host optnl { $$ = $1; } 4574 | redir_host_list comma host optnl { 4575 $1->tail->next = $3; 4576 $1->tail = $3->tail; 4577 $$ = $1; 4578 } 4579 ; 4580 4581 redirpool : /* empty */ { $$ = NULL; } 4582 | ARROW redirspec { 4583 $$ = calloc(1, sizeof(struct redirection)); 4584 if ($$ == NULL) 4585 err(1, "redirection: calloc"); 4586 $$->host = $2; 4587 $$->rport.a = $$->rport.b = $$->rport.t = 0; 4588 } 4589 | ARROW redirspec PORT portstar { 4590 $$ = calloc(1, sizeof(struct redirection)); 4591 if ($$ == NULL) 4592 err(1, "redirection: calloc"); 4593 $$->host = $2; 4594 $$->rport = $4; 4595 } 4596 ; 4597 4598 hashkey : /* empty */ 4599 { 4600 $$ = calloc(1, sizeof(struct pf_poolhashkey)); 4601 if ($$ == NULL) 4602 err(1, "hashkey: calloc"); 4603 $$->key32[0] = arc4random(); 4604 $$->key32[1] = arc4random(); 4605 $$->key32[2] = arc4random(); 4606 $$->key32[3] = arc4random(); 4607 } 4608 | string 4609 { 4610 if (!strncmp($1, "0x", 2)) { 4611 if (strlen($1) != 34) { 4612 free($1); 4613 yyerror("hex key must be 128 bits " 4614 "(32 hex digits) long"); 4615 YYERROR; 4616 } 4617 $$ = calloc(1, sizeof(struct pf_poolhashkey)); 4618 if ($$ == NULL) 4619 err(1, "hashkey: calloc"); 4620 4621 if (sscanf($1, "0x%8x%8x%8x%8x", 4622 &$$->key32[0], &$$->key32[1], 4623 &$$->key32[2], &$$->key32[3]) != 4) { 4624 free($$); 4625 free($1); 4626 yyerror("invalid hex key"); 4627 YYERROR; 4628 } 4629 } else { 4630 MD5_CTX context; 4631 4632 $$ = calloc(1, sizeof(struct pf_poolhashkey)); 4633 if ($$ == NULL) 4634 err(1, "hashkey: calloc"); 4635 MD5Init(&context); 4636 MD5Update(&context, (unsigned char *)$1, 4637 strlen($1)); 4638 MD5Final((unsigned char *)$$, &context); 4639 HTONL($$->key32[0]); 4640 HTONL($$->key32[1]); 4641 HTONL($$->key32[2]); 4642 HTONL($$->key32[3]); 4643 } 4644 free($1); 4645 } 4646 ; 4647 4648 pool_opts : { bzero(&pool_opts, sizeof pool_opts); } 4649 pool_opts_l 4650 { $$ = pool_opts; } 4651 | /* empty */ { 4652 bzero(&pool_opts, sizeof pool_opts); 4653 $$ = pool_opts; 4654 } 4655 ; 4656 4657 pool_opts_l : pool_opts_l pool_opt 4658 | pool_opt 4659 ; 4660 4661 pool_opt : BITMASK { 4662 if (pool_opts.type) { 4663 yyerror("pool type cannot be redefined"); 4664 YYERROR; 4665 } 4666 pool_opts.type = PF_POOL_BITMASK; 4667 } 4668 | RANDOM { 4669 if (pool_opts.type) { 4670 yyerror("pool type cannot be redefined"); 4671 YYERROR; 4672 } 4673 pool_opts.type = PF_POOL_RANDOM; 4674 } 4675 | SOURCEHASH hashkey { 4676 if (pool_opts.type) { 4677 yyerror("pool type cannot be redefined"); 4678 YYERROR; 4679 } 4680 pool_opts.type = PF_POOL_SRCHASH; 4681 pool_opts.key = $2; 4682 } 4683 | ROUNDROBIN { 4684 if (pool_opts.type) { 4685 yyerror("pool type cannot be redefined"); 4686 YYERROR; 4687 } 4688 pool_opts.type = PF_POOL_ROUNDROBIN; 4689 } 4690 | STATICPORT { 4691 if (pool_opts.staticport) { 4692 yyerror("static-port cannot be redefined"); 4693 YYERROR; 4694 } 4695 pool_opts.staticport = 1; 4696 } 4697 | STICKYADDRESS { 4698 if (pool_opts.marker & POM_STICKYADDRESS) { 4699 yyerror("sticky-address cannot be redefined"); 4700 YYERROR; 4701 } 4702 pool_opts.marker |= POM_STICKYADDRESS; 4703 pool_opts.opts |= PF_POOL_STICKYADDR; 4704 } 4705 | ENDPI { 4706 if (pool_opts.marker & POM_ENDPI) { 4707 yyerror("endpoint-independent cannot be redefined"); 4708 YYERROR; 4709 } 4710 pool_opts.marker |= POM_ENDPI; 4711 pool_opts.opts |= PF_POOL_ENDPI; 4712 } 4713 | MAPEPORTSET number '/' number '/' number { 4714 if (pool_opts.mape.offset) { 4715 yyerror("map-e-portset cannot be redefined"); 4716 YYERROR; 4717 } 4718 if (pool_opts.type) { 4719 yyerror("map-e-portset cannot be used with " 4720 "address pools"); 4721 YYERROR; 4722 } 4723 if ($2 <= 0 || $2 >= 16) { 4724 yyerror("MAP-E PSID offset must be 1-15"); 4725 YYERROR; 4726 } 4727 if ($4 < 0 || $4 >= 16 || $2 + $4 > 16) { 4728 yyerror("Invalid MAP-E PSID length"); 4729 YYERROR; 4730 } else if ($4 == 0) { 4731 yyerror("PSID Length = 0: this means" 4732 " you do not need MAP-E"); 4733 YYERROR; 4734 } 4735 if ($6 < 0 || $6 > 65535) { 4736 yyerror("Invalid MAP-E PSID"); 4737 YYERROR; 4738 } 4739 pool_opts.mape.offset = $2; 4740 pool_opts.mape.psidlen = $4; 4741 pool_opts.mape.psid = $6; 4742 } 4743 ; 4744 4745 redirection : /* empty */ { $$ = NULL; } 4746 | ARROW host { 4747 $$ = calloc(1, sizeof(struct redirection)); 4748 if ($$ == NULL) 4749 err(1, "redirection: calloc"); 4750 $$->host = $2; 4751 $$->rport.a = $$->rport.b = $$->rport.t = 0; 4752 } 4753 | ARROW host PORT portstar { 4754 $$ = calloc(1, sizeof(struct redirection)); 4755 if ($$ == NULL) 4756 err(1, "redirection: calloc"); 4757 $$->host = $2; 4758 $$->rport = $4; 4759 } 4760 ; 4761 4762 natpasslog : /* empty */ { $$.b1 = $$.b2 = 0; $$.w2 = 0; } 4763 | PASS { $$.b1 = 1; $$.b2 = 0; $$.w2 = 0; } 4764 | PASS log { $$.b1 = 1; $$.b2 = $2.log; $$.w2 = $2.logif; } 4765 | log { $$.b1 = 0; $$.b2 = $1.log; $$.w2 = $1.logif; } 4766 ; 4767 4768 nataction : no NAT natpasslog { 4769 if ($1 && $3.b1) { 4770 yyerror("\"pass\" not valid with \"no\""); 4771 YYERROR; 4772 } 4773 if ($1) 4774 $$.b1 = PF_NONAT; 4775 else 4776 $$.b1 = PF_NAT; 4777 $$.b2 = $3.b1; 4778 $$.w = $3.b2; 4779 $$.w2 = $3.w2; 4780 } 4781 | no RDR natpasslog { 4782 if ($1 && $3.b1) { 4783 yyerror("\"pass\" not valid with \"no\""); 4784 YYERROR; 4785 } 4786 if ($1) 4787 $$.b1 = PF_NORDR; 4788 else 4789 $$.b1 = PF_RDR; 4790 $$.b2 = $3.b1; 4791 $$.w = $3.b2; 4792 $$.w2 = $3.w2; 4793 } 4794 ; 4795 4796 natrule : nataction interface af proto fromto tag tagged rtable 4797 redirpool pool_opts 4798 { 4799 struct pfctl_rule r; 4800 struct node_state_opt *o; 4801 4802 if (check_rulestate(PFCTL_STATE_NAT)) 4803 YYERROR; 4804 4805 memset(&r, 0, sizeof(r)); 4806 4807 r.action = $1.b1; 4808 r.natpass = $1.b2; 4809 r.log = $1.w; 4810 r.logif = $1.w2; 4811 r.af = $3; 4812 4813 if (!r.af) { 4814 if ($5.src.host && $5.src.host->af && 4815 !$5.src.host->ifindex) 4816 r.af = $5.src.host->af; 4817 else if ($5.dst.host && $5.dst.host->af && 4818 !$5.dst.host->ifindex) 4819 r.af = $5.dst.host->af; 4820 } 4821 4822 if ($6 != NULL) 4823 if (strlcpy(r.tagname, $6, PF_TAG_NAME_SIZE) >= 4824 PF_TAG_NAME_SIZE) { 4825 yyerror("tag too long, max %u chars", 4826 PF_TAG_NAME_SIZE - 1); 4827 YYERROR; 4828 } 4829 4830 if ($7.name) 4831 if (strlcpy(r.match_tagname, $7.name, 4832 PF_TAG_NAME_SIZE) >= PF_TAG_NAME_SIZE) { 4833 yyerror("tag too long, max %u chars", 4834 PF_TAG_NAME_SIZE - 1); 4835 YYERROR; 4836 } 4837 r.match_tag_not = $7.neg; 4838 r.rtableid = $8; 4839 4840 if (r.action == PF_NONAT || r.action == PF_NORDR) { 4841 if ($9 != NULL) { 4842 yyerror("translation rule with 'no' " 4843 "does not need '->'"); 4844 YYERROR; 4845 } 4846 } else { 4847 if ($9 == NULL || $9->host == NULL) { 4848 yyerror("translation rule requires '-> " 4849 "address'"); 4850 YYERROR; 4851 } 4852 if (!r.af && ! $9->host->ifindex) 4853 r.af = $9->host->af; 4854 4855 remove_invalid_hosts(&$9->host, &r.af); 4856 if (invalid_redirect($9->host, r.af)) 4857 YYERROR; 4858 if ($9->host->addr.type == PF_ADDR_DYNIFTL) { 4859 if (($9->host = gen_dynnode($9->host, r.af)) == NULL) 4860 err(1, "calloc"); 4861 } 4862 if (check_netmask($9->host, r.af)) 4863 YYERROR; 4864 4865 r.rpool.proxy_port[0] = ntohs($9->rport.a); 4866 4867 switch (r.action) { 4868 case PF_RDR: 4869 if (!$9->rport.b && $9->rport.t && 4870 $5.dst.port != NULL) { 4871 r.rpool.proxy_port[1] = 4872 ntohs($9->rport.a) + 4873 (ntohs( 4874 $5.dst.port->port[1]) - 4875 ntohs( 4876 $5.dst.port->port[0])); 4877 } else 4878 r.rpool.proxy_port[1] = 4879 ntohs($9->rport.b); 4880 break; 4881 case PF_NAT: 4882 r.rpool.proxy_port[1] = 4883 ntohs($9->rport.b); 4884 if (!r.rpool.proxy_port[0] && 4885 !r.rpool.proxy_port[1]) { 4886 r.rpool.proxy_port[0] = 4887 PF_NAT_PROXY_PORT_LOW; 4888 r.rpool.proxy_port[1] = 4889 PF_NAT_PROXY_PORT_HIGH; 4890 } else if (!r.rpool.proxy_port[1]) 4891 r.rpool.proxy_port[1] = 4892 r.rpool.proxy_port[0]; 4893 break; 4894 default: 4895 break; 4896 } 4897 4898 r.rpool.opts = $10.type; 4899 if ((r.rpool.opts & PF_POOL_TYPEMASK) == 4900 PF_POOL_NONE && ($9->host->next != NULL || 4901 $9->host->addr.type == PF_ADDR_TABLE || 4902 DYNIF_MULTIADDR($9->host->addr))) 4903 r.rpool.opts = PF_POOL_ROUNDROBIN; 4904 if ((r.rpool.opts & PF_POOL_TYPEMASK) != 4905 PF_POOL_ROUNDROBIN && 4906 disallow_table($9->host, "tables are only " 4907 "supported in round-robin redirection " 4908 "pools")) 4909 YYERROR; 4910 if ((r.rpool.opts & PF_POOL_TYPEMASK) != 4911 PF_POOL_ROUNDROBIN && 4912 disallow_alias($9->host, "interface (%s) " 4913 "is only supported in round-robin " 4914 "redirection pools")) 4915 YYERROR; 4916 if ($9->host->next != NULL) { 4917 if ((r.rpool.opts & PF_POOL_TYPEMASK) != 4918 PF_POOL_ROUNDROBIN) { 4919 yyerror("only round-robin " 4920 "valid for multiple " 4921 "redirection addresses"); 4922 YYERROR; 4923 } 4924 } 4925 } 4926 4927 if ($10.key != NULL) 4928 memcpy(&r.rpool.key, $10.key, 4929 sizeof(struct pf_poolhashkey)); 4930 4931 if ($10.opts) 4932 r.rpool.opts |= $10.opts; 4933 4934 if ($10.staticport) { 4935 if (r.action != PF_NAT) { 4936 yyerror("the 'static-port' option is " 4937 "only valid with nat rules"); 4938 YYERROR; 4939 } 4940 if (r.rpool.proxy_port[0] != 4941 PF_NAT_PROXY_PORT_LOW && 4942 r.rpool.proxy_port[1] != 4943 PF_NAT_PROXY_PORT_HIGH) { 4944 yyerror("the 'static-port' option can't" 4945 " be used when specifying a port" 4946 " range"); 4947 YYERROR; 4948 } 4949 r.rpool.proxy_port[0] = 0; 4950 r.rpool.proxy_port[1] = 0; 4951 } 4952 4953 if ($10.mape.offset) { 4954 if (r.action != PF_NAT) { 4955 yyerror("the 'map-e-portset' option is" 4956 " only valid with nat rules"); 4957 YYERROR; 4958 } 4959 if ($10.staticport) { 4960 yyerror("the 'map-e-portset' option" 4961 " can't be used 'static-port'"); 4962 YYERROR; 4963 } 4964 if (r.rpool.proxy_port[0] != 4965 PF_NAT_PROXY_PORT_LOW && 4966 r.rpool.proxy_port[1] != 4967 PF_NAT_PROXY_PORT_HIGH) { 4968 yyerror("the 'map-e-portset' option" 4969 " can't be used when specifying" 4970 " a port range"); 4971 YYERROR; 4972 } 4973 r.rpool.mape = $10.mape; 4974 } 4975 4976 o = keep_state_defaults; 4977 while (o) { 4978 switch (o->type) { 4979 case PF_STATE_OPT_PFLOW: 4980 if (r.rule_flag & PFRULE_PFLOW) { 4981 yyerror("state pflow option: " 4982 "multiple definitions"); 4983 YYERROR; 4984 } 4985 r.rule_flag |= PFRULE_PFLOW; 4986 break; 4987 } 4988 o = o->next; 4989 } 4990 4991 expand_rule(&r, $2, $9 == NULL ? NULL : $9->host, NULL, $4, 4992 $5.src_os, $5.src.host, $5.src.port, $5.dst.host, 4993 $5.dst.port, 0, 0, 0, 0, ""); 4994 free($9); 4995 } 4996 ; 4997 4998 binatrule : no BINAT natpasslog interface af proto FROM ipspec toipspec tag 4999 tagged rtable redirection 5000 { 5001 struct pfctl_rule binat; 5002 struct pf_pooladdr *pa; 5003 5004 if (check_rulestate(PFCTL_STATE_NAT)) 5005 YYERROR; 5006 if (disallow_urpf_failed($9, "\"urpf-failed\" is not " 5007 "permitted as a binat destination")) 5008 YYERROR; 5009 5010 memset(&binat, 0, sizeof(binat)); 5011 5012 if ($1 && $3.b1) { 5013 yyerror("\"pass\" not valid with \"no\""); 5014 YYERROR; 5015 } 5016 if ($1) 5017 binat.action = PF_NOBINAT; 5018 else 5019 binat.action = PF_BINAT; 5020 binat.natpass = $3.b1; 5021 binat.log = $3.b2; 5022 binat.logif = $3.w2; 5023 binat.af = $5; 5024 if (!binat.af && $8 != NULL && $8->af) 5025 binat.af = $8->af; 5026 if (!binat.af && $9 != NULL && $9->af) 5027 binat.af = $9->af; 5028 5029 if (!binat.af && $13 != NULL && $13->host) 5030 binat.af = $13->host->af; 5031 if (!binat.af) { 5032 yyerror("address family (inet/inet6) " 5033 "undefined"); 5034 YYERROR; 5035 } 5036 5037 if ($4 != NULL) { 5038 memcpy(binat.ifname, $4->ifname, 5039 sizeof(binat.ifname)); 5040 binat.ifnot = $4->not; 5041 free($4); 5042 } 5043 5044 if ($10 != NULL) 5045 if (strlcpy(binat.tagname, $10, 5046 PF_TAG_NAME_SIZE) >= PF_TAG_NAME_SIZE) { 5047 yyerror("tag too long, max %u chars", 5048 PF_TAG_NAME_SIZE - 1); 5049 YYERROR; 5050 } 5051 if ($11.name) 5052 if (strlcpy(binat.match_tagname, $11.name, 5053 PF_TAG_NAME_SIZE) >= PF_TAG_NAME_SIZE) { 5054 yyerror("tag too long, max %u chars", 5055 PF_TAG_NAME_SIZE - 1); 5056 YYERROR; 5057 } 5058 binat.match_tag_not = $11.neg; 5059 binat.rtableid = $12; 5060 5061 if ($6 != NULL) { 5062 binat.proto = $6->proto; 5063 free($6); 5064 } 5065 5066 if ($8 != NULL && disallow_table($8, "invalid use of " 5067 "table <%s> as the source address of a binat rule")) 5068 YYERROR; 5069 if ($8 != NULL && disallow_alias($8, "invalid use of " 5070 "interface (%s) as the source address of a binat " 5071 "rule")) 5072 YYERROR; 5073 if ($13 != NULL && $13->host != NULL && disallow_table( 5074 $13->host, "invalid use of table <%s> as the " 5075 "redirect address of a binat rule")) 5076 YYERROR; 5077 if ($13 != NULL && $13->host != NULL && disallow_alias( 5078 $13->host, "invalid use of interface (%s) as the " 5079 "redirect address of a binat rule")) 5080 YYERROR; 5081 5082 if ($8 != NULL) { 5083 if ($8->next) { 5084 yyerror("multiple binat ip addresses"); 5085 YYERROR; 5086 } 5087 if ($8->addr.type == PF_ADDR_DYNIFTL) 5088 $8->af = binat.af; 5089 if ($8->af != binat.af) { 5090 yyerror("binat ip versions must match"); 5091 YYERROR; 5092 } 5093 if ($8->addr.type == PF_ADDR_DYNIFTL) { 5094 if (($8 = gen_dynnode($8, binat.af)) == NULL) 5095 err(1, "calloc"); 5096 } 5097 if (check_netmask($8, binat.af)) 5098 YYERROR; 5099 memcpy(&binat.src.addr, &$8->addr, 5100 sizeof(binat.src.addr)); 5101 free($8); 5102 } 5103 if ($9 != NULL) { 5104 if ($9->next) { 5105 yyerror("multiple binat ip addresses"); 5106 YYERROR; 5107 } 5108 if ($9->af != binat.af && $9->af) { 5109 yyerror("binat ip versions must match"); 5110 YYERROR; 5111 } 5112 if ($9->addr.type == PF_ADDR_DYNIFTL) { 5113 if (($9 = gen_dynnode($9, binat.af)) == NULL) 5114 err(1, "calloc"); 5115 } 5116 if (check_netmask($9, binat.af)) 5117 YYERROR; 5118 memcpy(&binat.dst.addr, &$9->addr, 5119 sizeof(binat.dst.addr)); 5120 binat.dst.neg = $9->not; 5121 free($9); 5122 } 5123 5124 if (binat.action == PF_NOBINAT) { 5125 if ($13 != NULL) { 5126 yyerror("'no binat' rule does not need" 5127 " '->'"); 5128 YYERROR; 5129 } 5130 } else { 5131 if ($13 == NULL || $13->host == NULL) { 5132 yyerror("'binat' rule requires" 5133 " '-> address'"); 5134 YYERROR; 5135 } 5136 5137 remove_invalid_hosts(&$13->host, &binat.af); 5138 if (invalid_redirect($13->host, binat.af)) 5139 YYERROR; 5140 if ($13->host->next != NULL) { 5141 yyerror("binat rule must redirect to " 5142 "a single address"); 5143 YYERROR; 5144 } 5145 if ($13->host->addr.type == PF_ADDR_DYNIFTL) { 5146 if (($13->host = gen_dynnode($13->host, binat.af)) == NULL) 5147 err(1, "calloc"); 5148 } 5149 if (check_netmask($13->host, binat.af)) 5150 YYERROR; 5151 5152 if (!PF_AZERO(&binat.src.addr.v.a.mask, 5153 binat.af) && 5154 !PF_AEQ(&binat.src.addr.v.a.mask, 5155 &$13->host->addr.v.a.mask, binat.af)) { 5156 yyerror("'binat' source mask and " 5157 "redirect mask must be the same"); 5158 YYERROR; 5159 } 5160 5161 TAILQ_INIT(&binat.rpool.list); 5162 pa = calloc(1, sizeof(struct pf_pooladdr)); 5163 if (pa == NULL) 5164 err(1, "binat: calloc"); 5165 pa->addr = $13->host->addr; 5166 pa->ifname[0] = 0; 5167 TAILQ_INSERT_TAIL(&binat.rpool.list, 5168 pa, entries); 5169 5170 free($13); 5171 } 5172 5173 pfctl_append_rule(pf, &binat, ""); 5174 } 5175 ; 5176 5177 tag : /* empty */ { $$ = NULL; } 5178 | TAG STRING { $$ = $2; } 5179 ; 5180 5181 tagged : /* empty */ { $$.neg = 0; $$.name = NULL; } 5182 | not TAGGED string { $$.neg = $1; $$.name = $3; } 5183 ; 5184 5185 rtable : /* empty */ { $$ = -1; } 5186 | RTABLE NUMBER { 5187 if ($2 < 0 || $2 > rt_tableid_max()) { 5188 yyerror("invalid rtable id"); 5189 YYERROR; 5190 } 5191 $$ = $2; 5192 } 5193 ; 5194 5195 route_host : STRING { 5196 $$ = calloc(1, sizeof(struct node_host)); 5197 if ($$ == NULL) 5198 err(1, "route_host: calloc"); 5199 if (strlen($1) >= IFNAMSIZ) { 5200 yyerror("interface name too long"); 5201 YYERROR; 5202 } 5203 $$->ifname = strdup($1); 5204 set_ipmask($$, 128); 5205 $$->next = NULL; 5206 $$->tail = $$; 5207 } 5208 | '(' STRING host ')' { 5209 struct node_host *n; 5210 5211 $$ = $3; 5212 for (n = $3; n != NULL; n = n->next) { 5213 if (strlen($2) >= IFNAMSIZ) { 5214 yyerror("interface name too long"); 5215 YYERROR; 5216 } 5217 n->ifname = strdup($2); 5218 } 5219 } 5220 ; 5221 5222 route_host_list : route_host optnl { $$ = $1; } 5223 | route_host_list comma route_host optnl { 5224 if ($1->af == 0) 5225 $1->af = $3->af; 5226 if ($1->af != $3->af) { 5227 yyerror("all pool addresses must be in the " 5228 "same address family"); 5229 YYERROR; 5230 } 5231 $1->tail->next = $3; 5232 $1->tail = $3->tail; 5233 $$ = $1; 5234 } 5235 ; 5236 5237 routespec : route_host { $$ = $1; } 5238 | '{' optnl route_host_list '}' { $$ = $3; } 5239 ; 5240 5241 route : /* empty */ { 5242 $$.host = NULL; 5243 $$.rt = 0; 5244 $$.pool_opts = 0; 5245 } 5246 | FASTROUTE { 5247 /* backwards-compat */ 5248 $$.host = NULL; 5249 $$.rt = 0; 5250 $$.pool_opts = 0; 5251 } 5252 | ROUTETO routespec pool_opts { 5253 $$.host = $2; 5254 $$.rt = PF_ROUTETO; 5255 $$.pool_opts = $3.type | $3.opts; 5256 if ($3.key != NULL) 5257 $$.key = $3.key; 5258 } 5259 | REPLYTO routespec pool_opts { 5260 $$.host = $2; 5261 $$.rt = PF_REPLYTO; 5262 $$.pool_opts = $3.type | $3.opts; 5263 if ($3.key != NULL) 5264 $$.key = $3.key; 5265 } 5266 | DUPTO routespec pool_opts { 5267 $$.host = $2; 5268 $$.rt = PF_DUPTO; 5269 $$.pool_opts = $3.type | $3.opts; 5270 if ($3.key != NULL) 5271 $$.key = $3.key; 5272 } 5273 ; 5274 5275 timeout_spec : STRING NUMBER 5276 { 5277 if (check_rulestate(PFCTL_STATE_OPTION)) { 5278 free($1); 5279 YYERROR; 5280 } 5281 if ($2 < 0 || $2 > UINT_MAX) { 5282 yyerror("only positive values permitted"); 5283 YYERROR; 5284 } 5285 if (pfctl_apply_timeout(pf, $1, $2, 0) != 0) { 5286 yyerror("unknown timeout %s", $1); 5287 free($1); 5288 YYERROR; 5289 } 5290 free($1); 5291 } 5292 | INTERVAL NUMBER { 5293 if (check_rulestate(PFCTL_STATE_OPTION)) 5294 YYERROR; 5295 if ($2 < 0 || $2 > UINT_MAX) { 5296 yyerror("only positive values permitted"); 5297 YYERROR; 5298 } 5299 if (pfctl_apply_timeout(pf, "interval", $2, 0) != 0) 5300 YYERROR; 5301 } 5302 ; 5303 5304 timeout_list : timeout_list comma timeout_spec optnl 5305 | timeout_spec optnl 5306 ; 5307 5308 limit_spec : STRING NUMBER 5309 { 5310 if (check_rulestate(PFCTL_STATE_OPTION)) { 5311 free($1); 5312 YYERROR; 5313 } 5314 if ($2 < 0 || $2 > UINT_MAX) { 5315 yyerror("only positive values permitted"); 5316 YYERROR; 5317 } 5318 if (pfctl_apply_limit(pf, $1, $2) != 0) { 5319 yyerror("unable to set limit %s %u", $1, $2); 5320 free($1); 5321 YYERROR; 5322 } 5323 free($1); 5324 } 5325 ; 5326 5327 limit_list : limit_list comma limit_spec optnl 5328 | limit_spec optnl 5329 ; 5330 5331 comma : ',' 5332 | /* empty */ 5333 ; 5334 5335 yesno : NO { $$ = 0; } 5336 | STRING { 5337 if (!strcmp($1, "yes")) 5338 $$ = 1; 5339 else { 5340 yyerror("invalid value '%s', expected 'yes' " 5341 "or 'no'", $1); 5342 free($1); 5343 YYERROR; 5344 } 5345 free($1); 5346 } 5347 ; 5348 5349 unaryop : '=' { $$ = PF_OP_EQ; } 5350 | NE { $$ = PF_OP_NE; } 5351 | LE { $$ = PF_OP_LE; } 5352 | '<' { $$ = PF_OP_LT; } 5353 | GE { $$ = PF_OP_GE; } 5354 | '>' { $$ = PF_OP_GT; } 5355 ; 5356 5357 %% 5358 5359 int 5360 yyerror(const char *fmt, ...) 5361 { 5362 va_list ap; 5363 5364 file->errors++; 5365 va_start(ap, fmt); 5366 fprintf(stderr, "%s:%d: ", file->name, yylval.lineno); 5367 vfprintf(stderr, fmt, ap); 5368 fprintf(stderr, "\n"); 5369 va_end(ap); 5370 return (0); 5371 } 5372 5373 int 5374 disallow_table(struct node_host *h, const char *fmt) 5375 { 5376 for (; h != NULL; h = h->next) 5377 if (h->addr.type == PF_ADDR_TABLE) { 5378 yyerror(fmt, h->addr.v.tblname); 5379 return (1); 5380 } 5381 return (0); 5382 } 5383 5384 int 5385 disallow_urpf_failed(struct node_host *h, const char *fmt) 5386 { 5387 for (; h != NULL; h = h->next) 5388 if (h->addr.type == PF_ADDR_URPFFAILED) { 5389 yyerror(fmt); 5390 return (1); 5391 } 5392 return (0); 5393 } 5394 5395 int 5396 disallow_alias(struct node_host *h, const char *fmt) 5397 { 5398 for (; h != NULL; h = h->next) 5399 if (DYNIF_MULTIADDR(h->addr)) { 5400 yyerror(fmt, h->addr.v.tblname); 5401 return (1); 5402 } 5403 return (0); 5404 } 5405 5406 int 5407 rule_consistent(struct pfctl_rule *r, int anchor_call) 5408 { 5409 int problems = 0; 5410 5411 switch (r->action) { 5412 case PF_PASS: 5413 case PF_MATCH: 5414 case PF_DROP: 5415 case PF_SCRUB: 5416 case PF_NOSCRUB: 5417 problems = filter_consistent(r, anchor_call); 5418 break; 5419 case PF_NAT: 5420 case PF_NONAT: 5421 problems = nat_consistent(r); 5422 break; 5423 case PF_RDR: 5424 case PF_NORDR: 5425 problems = rdr_consistent(r); 5426 break; 5427 case PF_BINAT: 5428 case PF_NOBINAT: 5429 default: 5430 break; 5431 } 5432 return (problems); 5433 } 5434 5435 int 5436 filter_consistent(struct pfctl_rule *r, int anchor_call) 5437 { 5438 int problems = 0; 5439 5440 if (r->proto != IPPROTO_TCP && r->proto != IPPROTO_UDP && 5441 r->proto != IPPROTO_SCTP && 5442 (r->src.port_op || r->dst.port_op)) { 5443 yyerror("port only applies to tcp/udp/sctp"); 5444 problems++; 5445 } 5446 if (r->proto != IPPROTO_ICMP && r->proto != IPPROTO_ICMPV6 && 5447 (r->type || r->code)) { 5448 yyerror("icmp-type/code only applies to icmp"); 5449 problems++; 5450 } 5451 if (!r->af && (r->type || r->code)) { 5452 yyerror("must indicate address family with icmp-type/code"); 5453 problems++; 5454 } 5455 if (r->overload_tblname[0] && 5456 r->max_src_conn == 0 && r->max_src_conn_rate.seconds == 0) { 5457 yyerror("'overload' requires 'max-src-conn' " 5458 "or 'max-src-conn-rate'"); 5459 problems++; 5460 } 5461 if ((r->proto == IPPROTO_ICMP && r->af == AF_INET6) || 5462 (r->proto == IPPROTO_ICMPV6 && r->af == AF_INET)) { 5463 yyerror("proto %s doesn't match address family %s", 5464 r->proto == IPPROTO_ICMP ? "icmp" : "icmp6", 5465 r->af == AF_INET ? "inet" : "inet6"); 5466 problems++; 5467 } 5468 if (r->allow_opts && r->action != PF_PASS) { 5469 yyerror("allow-opts can only be specified for pass rules"); 5470 problems++; 5471 } 5472 if (r->rule_flag & PFRULE_FRAGMENT && (r->src.port_op || 5473 r->dst.port_op || r->flagset || r->type || r->code)) { 5474 yyerror("fragments can be filtered only on IP header fields"); 5475 problems++; 5476 } 5477 if (r->rule_flag & PFRULE_RETURNRST && r->proto != IPPROTO_TCP) { 5478 yyerror("return-rst can only be applied to TCP rules"); 5479 problems++; 5480 } 5481 if (r->max_src_nodes && !(r->rule_flag & PFRULE_RULESRCTRACK)) { 5482 yyerror("max-src-nodes requires 'source-track rule'"); 5483 problems++; 5484 } 5485 if (r->action != PF_PASS && r->keep_state) { 5486 yyerror("keep state is great, but only for pass rules"); 5487 problems++; 5488 } 5489 if (r->rule_flag & PFRULE_STATESLOPPY && 5490 (r->keep_state == PF_STATE_MODULATE || 5491 r->keep_state == PF_STATE_SYNPROXY)) { 5492 yyerror("sloppy state matching cannot be used with " 5493 "synproxy state or modulate state"); 5494 problems++; 5495 } 5496 /* match rules rules */ 5497 if (r->action == PF_MATCH) { 5498 if (r->divert.port) { 5499 yyerror("divert is not supported on match rules"); 5500 problems++; 5501 } 5502 if (r->rt) { 5503 yyerror("route-to, reply-to, dup-to and fastroute " 5504 "must not be used on match rules"); 5505 problems++; 5506 } 5507 if (r->naf != r->af) { 5508 yyerror("af-to is not supported on match rules"); 5509 problems++; 5510 } 5511 } 5512 if (r->rpool.opts & PF_POOL_STICKYADDR && !r->keep_state) { 5513 yyerror("'sticky-address' requires 'keep state'"); 5514 problems++; 5515 } 5516 return (-problems); 5517 } 5518 5519 int 5520 nat_consistent(struct pfctl_rule *r) 5521 { 5522 return (0); /* yeah! */ 5523 } 5524 5525 int 5526 rdr_consistent(struct pfctl_rule *r) 5527 { 5528 int problems = 0; 5529 5530 if (r->proto != IPPROTO_TCP && r->proto != IPPROTO_UDP && 5531 r->proto != IPPROTO_SCTP) { 5532 if (r->src.port_op) { 5533 yyerror("src port only applies to tcp/udp/sctp"); 5534 problems++; 5535 } 5536 if (r->dst.port_op) { 5537 yyerror("dst port only applies to tcp/udp/sctp"); 5538 problems++; 5539 } 5540 if (r->rpool.proxy_port[0]) { 5541 yyerror("rpool port only applies to tcp/udp/sctp"); 5542 problems++; 5543 } 5544 } 5545 if (r->dst.port_op && 5546 r->dst.port_op != PF_OP_EQ && r->dst.port_op != PF_OP_RRG) { 5547 yyerror("invalid port operator for rdr destination port"); 5548 problems++; 5549 } 5550 return (-problems); 5551 } 5552 5553 int 5554 process_tabledef(char *name, struct table_opts *opts) 5555 { 5556 struct pfr_buffer ab; 5557 struct node_tinit *ti; 5558 unsigned long maxcount; 5559 size_t s = sizeof(maxcount); 5560 5561 bzero(&ab, sizeof(ab)); 5562 ab.pfrb_type = PFRB_ADDRS; 5563 SIMPLEQ_FOREACH(ti, &opts->init_nodes, entries) { 5564 if (ti->file) 5565 if (pfr_buf_load(&ab, ti->file, 0, append_addr)) { 5566 if (errno) 5567 yyerror("cannot load \"%s\": %s", 5568 ti->file, strerror(errno)); 5569 else 5570 yyerror("file \"%s\" contains bad data", 5571 ti->file); 5572 goto _error; 5573 } 5574 if (ti->host) 5575 if (append_addr_host(&ab, ti->host, 0, 0)) { 5576 yyerror("cannot create address buffer: %s", 5577 strerror(errno)); 5578 goto _error; 5579 } 5580 } 5581 if (pf->opts & PF_OPT_VERBOSE) 5582 print_tabledef(name, opts->flags, opts->init_addr, 5583 &opts->init_nodes); 5584 if (!(pf->opts & PF_OPT_NOACTION) && 5585 pfctl_define_table(name, opts->flags, opts->init_addr, 5586 pf->anchor->name, &ab, pf->anchor->ruleset.tticket)) { 5587 5588 if (sysctlbyname("net.pf.request_maxcount", &maxcount, &s, 5589 NULL, 0) == -1) 5590 maxcount = 65535; 5591 5592 if (ab.pfrb_size > maxcount) 5593 yyerror("cannot define table %s: too many elements.\n" 5594 "Consider increasing net.pf.request_maxcount.", 5595 name); 5596 else 5597 yyerror("cannot define table %s: %s", name, 5598 pfr_strerror(errno)); 5599 5600 goto _error; 5601 } 5602 pf->tdirty = 1; 5603 pfr_buf_clear(&ab); 5604 return (0); 5605 _error: 5606 pfr_buf_clear(&ab); 5607 return (-1); 5608 } 5609 5610 struct keywords { 5611 const char *k_name; 5612 int k_val; 5613 }; 5614 5615 /* macro gore, but you should've seen the prior indentation nightmare... */ 5616 5617 #define FREE_LIST(T,r) \ 5618 do { \ 5619 T *p, *node = r; \ 5620 while (node != NULL) { \ 5621 p = node; \ 5622 node = node->next; \ 5623 free(p); \ 5624 } \ 5625 } while (0) 5626 5627 #define LOOP_THROUGH(T,n,r,C) \ 5628 do { \ 5629 T *n; \ 5630 if (r == NULL) { \ 5631 r = calloc(1, sizeof(T)); \ 5632 if (r == NULL) \ 5633 err(1, "LOOP: calloc"); \ 5634 r->next = NULL; \ 5635 } \ 5636 n = r; \ 5637 while (n != NULL) { \ 5638 do { \ 5639 C; \ 5640 } while (0); \ 5641 n = n->next; \ 5642 } \ 5643 } while (0) 5644 5645 void 5646 expand_label_str(char *label, size_t len, const char *srch, const char *repl) 5647 { 5648 char *tmp; 5649 char *p, *q; 5650 5651 if ((tmp = calloc(1, len)) == NULL) 5652 err(1, "expand_label_str: calloc"); 5653 p = q = label; 5654 while ((q = strstr(p, srch)) != NULL) { 5655 *q = '\0'; 5656 if ((strlcat(tmp, p, len) >= len) || 5657 (strlcat(tmp, repl, len) >= len)) 5658 errx(1, "expand_label: label too long"); 5659 q += strlen(srch); 5660 p = q; 5661 } 5662 if (strlcat(tmp, p, len) >= len) 5663 errx(1, "expand_label: label too long"); 5664 strlcpy(label, tmp, len); /* always fits */ 5665 free(tmp); 5666 } 5667 5668 void 5669 expand_label_if(const char *name, char *label, size_t len, const char *ifname) 5670 { 5671 if (strstr(label, name) != NULL) { 5672 if (!*ifname) 5673 expand_label_str(label, len, name, "any"); 5674 else 5675 expand_label_str(label, len, name, ifname); 5676 } 5677 } 5678 5679 void 5680 expand_label_addr(const char *name, char *label, size_t len, sa_family_t af, 5681 struct pf_rule_addr *addr) 5682 { 5683 char tmp[64], tmp_not[66]; 5684 5685 if (strstr(label, name) != NULL) { 5686 switch (addr->addr.type) { 5687 case PF_ADDR_DYNIFTL: 5688 snprintf(tmp, sizeof(tmp), "(%s)", addr->addr.v.ifname); 5689 break; 5690 case PF_ADDR_TABLE: 5691 snprintf(tmp, sizeof(tmp), "<%s>", addr->addr.v.tblname); 5692 break; 5693 case PF_ADDR_NOROUTE: 5694 snprintf(tmp, sizeof(tmp), "no-route"); 5695 break; 5696 case PF_ADDR_URPFFAILED: 5697 snprintf(tmp, sizeof(tmp), "urpf-failed"); 5698 break; 5699 case PF_ADDR_ADDRMASK: 5700 if (!af || (PF_AZERO(&addr->addr.v.a.addr, af) && 5701 PF_AZERO(&addr->addr.v.a.mask, af))) 5702 snprintf(tmp, sizeof(tmp), "any"); 5703 else { 5704 char a[48]; 5705 int bits; 5706 5707 if (inet_ntop(af, &addr->addr.v.a.addr, a, 5708 sizeof(a)) == NULL) 5709 snprintf(tmp, sizeof(tmp), "?"); 5710 else { 5711 bits = unmask(&addr->addr.v.a.mask, af); 5712 if ((af == AF_INET && bits < 32) || 5713 (af == AF_INET6 && bits < 128)) 5714 snprintf(tmp, sizeof(tmp), 5715 "%s/%d", a, bits); 5716 else 5717 snprintf(tmp, sizeof(tmp), 5718 "%s", a); 5719 } 5720 } 5721 break; 5722 default: 5723 snprintf(tmp, sizeof(tmp), "?"); 5724 break; 5725 } 5726 5727 if (addr->neg) { 5728 snprintf(tmp_not, sizeof(tmp_not), "! %s", tmp); 5729 expand_label_str(label, len, name, tmp_not); 5730 } else 5731 expand_label_str(label, len, name, tmp); 5732 } 5733 } 5734 5735 void 5736 expand_label_port(const char *name, char *label, size_t len, 5737 struct pf_rule_addr *addr) 5738 { 5739 char a1[6], a2[6], op[13] = ""; 5740 5741 if (strstr(label, name) != NULL) { 5742 snprintf(a1, sizeof(a1), "%u", ntohs(addr->port[0])); 5743 snprintf(a2, sizeof(a2), "%u", ntohs(addr->port[1])); 5744 if (!addr->port_op) 5745 ; 5746 else if (addr->port_op == PF_OP_IRG) 5747 snprintf(op, sizeof(op), "%s><%s", a1, a2); 5748 else if (addr->port_op == PF_OP_XRG) 5749 snprintf(op, sizeof(op), "%s<>%s", a1, a2); 5750 else if (addr->port_op == PF_OP_EQ) 5751 snprintf(op, sizeof(op), "%s", a1); 5752 else if (addr->port_op == PF_OP_NE) 5753 snprintf(op, sizeof(op), "!=%s", a1); 5754 else if (addr->port_op == PF_OP_LT) 5755 snprintf(op, sizeof(op), "<%s", a1); 5756 else if (addr->port_op == PF_OP_LE) 5757 snprintf(op, sizeof(op), "<=%s", a1); 5758 else if (addr->port_op == PF_OP_GT) 5759 snprintf(op, sizeof(op), ">%s", a1); 5760 else if (addr->port_op == PF_OP_GE) 5761 snprintf(op, sizeof(op), ">=%s", a1); 5762 expand_label_str(label, len, name, op); 5763 } 5764 } 5765 5766 void 5767 expand_label_proto(const char *name, char *label, size_t len, u_int8_t proto) 5768 { 5769 const char *protoname; 5770 char n[4]; 5771 5772 if (strstr(label, name) != NULL) { 5773 protoname = pfctl_proto2name(proto); 5774 if (protoname != NULL) 5775 expand_label_str(label, len, name, protoname); 5776 else { 5777 snprintf(n, sizeof(n), "%u", proto); 5778 expand_label_str(label, len, name, n); 5779 } 5780 } 5781 } 5782 5783 void 5784 expand_label_nr(const char *name, char *label, size_t len, 5785 struct pfctl_rule *r) 5786 { 5787 char n[11]; 5788 5789 if (strstr(label, name) != NULL) { 5790 snprintf(n, sizeof(n), "%u", r->nr); 5791 expand_label_str(label, len, name, n); 5792 } 5793 } 5794 5795 void 5796 expand_label(char *label, size_t len, struct pfctl_rule *r) 5797 { 5798 expand_label_if("$if", label, len, r->ifname); 5799 expand_label_addr("$srcaddr", label, len, r->af, &r->src); 5800 expand_label_addr("$dstaddr", label, len, r->af, &r->dst); 5801 expand_label_port("$srcport", label, len, &r->src); 5802 expand_label_port("$dstport", label, len, &r->dst); 5803 expand_label_proto("$proto", label, len, r->proto); 5804 expand_label_nr("$nr", label, len, r); 5805 } 5806 5807 int 5808 expand_altq(struct pf_altq *a, struct node_if *interfaces, 5809 struct node_queue *nqueues, struct node_queue_bw bwspec, 5810 struct node_queue_opt *opts) 5811 { 5812 struct pf_altq pa, pb; 5813 char qname[PF_QNAME_SIZE]; 5814 struct node_queue *n; 5815 struct node_queue_bw bw; 5816 int errs = 0; 5817 5818 if ((pf->loadopt & PFCTL_FLAG_ALTQ) == 0) { 5819 FREE_LIST(struct node_if, interfaces); 5820 if (nqueues) 5821 FREE_LIST(struct node_queue, nqueues); 5822 return (0); 5823 } 5824 5825 LOOP_THROUGH(struct node_if, interface, interfaces, 5826 memcpy(&pa, a, sizeof(struct pf_altq)); 5827 if (strlcpy(pa.ifname, interface->ifname, 5828 sizeof(pa.ifname)) >= sizeof(pa.ifname)) 5829 errx(1, "expand_altq: strlcpy"); 5830 5831 if (interface->not) { 5832 yyerror("altq on ! <interface> is not supported"); 5833 errs++; 5834 } else { 5835 if (eval_pfaltq(pf, &pa, &bwspec, opts)) 5836 errs++; 5837 else 5838 if (pfctl_add_altq(pf, &pa)) 5839 errs++; 5840 5841 if (pf->opts & PF_OPT_VERBOSE) { 5842 print_altq(&pf->paltq->altq, 0, 5843 &bwspec, opts); 5844 if (nqueues && nqueues->tail) { 5845 printf("queue { "); 5846 LOOP_THROUGH(struct node_queue, queue, 5847 nqueues, 5848 printf("%s ", 5849 queue->queue); 5850 ); 5851 printf("}"); 5852 } 5853 printf("\n"); 5854 } 5855 5856 if (pa.scheduler == ALTQT_CBQ || 5857 pa.scheduler == ALTQT_HFSC || 5858 pa.scheduler == ALTQT_FAIRQ) { 5859 /* now create a root queue */ 5860 memset(&pb, 0, sizeof(struct pf_altq)); 5861 if (strlcpy(qname, "root_", sizeof(qname)) >= 5862 sizeof(qname)) 5863 errx(1, "expand_altq: strlcpy"); 5864 if (strlcat(qname, interface->ifname, 5865 sizeof(qname)) >= sizeof(qname)) 5866 errx(1, "expand_altq: strlcat"); 5867 if (strlcpy(pb.qname, qname, 5868 sizeof(pb.qname)) >= sizeof(pb.qname)) 5869 errx(1, "expand_altq: strlcpy"); 5870 if (strlcpy(pb.ifname, interface->ifname, 5871 sizeof(pb.ifname)) >= sizeof(pb.ifname)) 5872 errx(1, "expand_altq: strlcpy"); 5873 pb.qlimit = pa.qlimit; 5874 pb.scheduler = pa.scheduler; 5875 bw.bw_absolute = pa.ifbandwidth; 5876 bw.bw_percent = 0; 5877 if (eval_pfqueue(pf, &pb, &bw, opts)) 5878 errs++; 5879 else 5880 if (pfctl_add_altq(pf, &pb)) 5881 errs++; 5882 } 5883 5884 LOOP_THROUGH(struct node_queue, queue, nqueues, 5885 n = calloc(1, sizeof(struct node_queue)); 5886 if (n == NULL) 5887 err(1, "expand_altq: calloc"); 5888 if (pa.scheduler == ALTQT_CBQ || 5889 pa.scheduler == ALTQT_HFSC || 5890 pa.scheduler == ALTQT_FAIRQ) 5891 if (strlcpy(n->parent, qname, 5892 sizeof(n->parent)) >= 5893 sizeof(n->parent)) 5894 errx(1, "expand_altq: strlcpy"); 5895 if (strlcpy(n->queue, queue->queue, 5896 sizeof(n->queue)) >= sizeof(n->queue)) 5897 errx(1, "expand_altq: strlcpy"); 5898 if (strlcpy(n->ifname, interface->ifname, 5899 sizeof(n->ifname)) >= sizeof(n->ifname)) 5900 errx(1, "expand_altq: strlcpy"); 5901 n->scheduler = pa.scheduler; 5902 n->next = NULL; 5903 n->tail = n; 5904 if (queues == NULL) 5905 queues = n; 5906 else { 5907 queues->tail->next = n; 5908 queues->tail = n; 5909 } 5910 ); 5911 } 5912 ); 5913 FREE_LIST(struct node_if, interfaces); 5914 if (nqueues) 5915 FREE_LIST(struct node_queue, nqueues); 5916 5917 return (errs); 5918 } 5919 5920 int 5921 expand_queue(struct pf_altq *a, struct node_if *interfaces, 5922 struct node_queue *nqueues, struct node_queue_bw bwspec, 5923 struct node_queue_opt *opts) 5924 { 5925 struct node_queue *n, *nq; 5926 struct pf_altq pa; 5927 u_int8_t found = 0; 5928 u_int8_t errs = 0; 5929 5930 if ((pf->loadopt & PFCTL_FLAG_ALTQ) == 0) { 5931 FREE_LIST(struct node_queue, nqueues); 5932 return (0); 5933 } 5934 5935 if (queues == NULL) { 5936 yyerror("queue %s has no parent", a->qname); 5937 FREE_LIST(struct node_queue, nqueues); 5938 return (1); 5939 } 5940 5941 LOOP_THROUGH(struct node_if, interface, interfaces, 5942 LOOP_THROUGH(struct node_queue, tqueue, queues, 5943 if (!strncmp(a->qname, tqueue->queue, PF_QNAME_SIZE) && 5944 (interface->ifname[0] == 0 || 5945 (!interface->not && !strncmp(interface->ifname, 5946 tqueue->ifname, IFNAMSIZ)) || 5947 (interface->not && strncmp(interface->ifname, 5948 tqueue->ifname, IFNAMSIZ)))) { 5949 /* found ourself in queues */ 5950 found++; 5951 5952 memcpy(&pa, a, sizeof(struct pf_altq)); 5953 5954 if (pa.scheduler != ALTQT_NONE && 5955 pa.scheduler != tqueue->scheduler) { 5956 yyerror("exactly one scheduler type " 5957 "per interface allowed"); 5958 return (1); 5959 } 5960 pa.scheduler = tqueue->scheduler; 5961 5962 /* scheduler dependent error checking */ 5963 switch (pa.scheduler) { 5964 case ALTQT_PRIQ: 5965 if (nqueues != NULL) { 5966 yyerror("priq queues cannot " 5967 "have child queues"); 5968 return (1); 5969 } 5970 if (bwspec.bw_absolute > 0 || 5971 bwspec.bw_percent < 100) { 5972 yyerror("priq doesn't take " 5973 "bandwidth"); 5974 return (1); 5975 } 5976 break; 5977 default: 5978 break; 5979 } 5980 5981 if (strlcpy(pa.ifname, tqueue->ifname, 5982 sizeof(pa.ifname)) >= sizeof(pa.ifname)) 5983 errx(1, "expand_queue: strlcpy"); 5984 if (strlcpy(pa.parent, tqueue->parent, 5985 sizeof(pa.parent)) >= sizeof(pa.parent)) 5986 errx(1, "expand_queue: strlcpy"); 5987 5988 if (eval_pfqueue(pf, &pa, &bwspec, opts)) 5989 errs++; 5990 else 5991 if (pfctl_add_altq(pf, &pa)) 5992 errs++; 5993 5994 for (nq = nqueues; nq != NULL; nq = nq->next) { 5995 if (!strcmp(a->qname, nq->queue)) { 5996 yyerror("queue cannot have " 5997 "itself as child"); 5998 errs++; 5999 continue; 6000 } 6001 n = calloc(1, 6002 sizeof(struct node_queue)); 6003 if (n == NULL) 6004 err(1, "expand_queue: calloc"); 6005 if (strlcpy(n->parent, a->qname, 6006 sizeof(n->parent)) >= 6007 sizeof(n->parent)) 6008 errx(1, "expand_queue strlcpy"); 6009 if (strlcpy(n->queue, nq->queue, 6010 sizeof(n->queue)) >= 6011 sizeof(n->queue)) 6012 errx(1, "expand_queue strlcpy"); 6013 if (strlcpy(n->ifname, tqueue->ifname, 6014 sizeof(n->ifname)) >= 6015 sizeof(n->ifname)) 6016 errx(1, "expand_queue strlcpy"); 6017 n->scheduler = tqueue->scheduler; 6018 n->next = NULL; 6019 n->tail = n; 6020 if (queues == NULL) 6021 queues = n; 6022 else { 6023 queues->tail->next = n; 6024 queues->tail = n; 6025 } 6026 } 6027 if ((pf->opts & PF_OPT_VERBOSE) && ( 6028 (found == 1 && interface->ifname[0] == 0) || 6029 (found > 0 && interface->ifname[0] != 0))) { 6030 print_queue(&pf->paltq->altq, 0, 6031 &bwspec, interface->ifname[0] != 0, 6032 opts); 6033 if (nqueues && nqueues->tail) { 6034 printf("{ "); 6035 LOOP_THROUGH(struct node_queue, 6036 queue, nqueues, 6037 printf("%s ", 6038 queue->queue); 6039 ); 6040 printf("}"); 6041 } 6042 printf("\n"); 6043 } 6044 } 6045 ); 6046 ); 6047 6048 FREE_LIST(struct node_queue, nqueues); 6049 FREE_LIST(struct node_if, interfaces); 6050 6051 if (!found) { 6052 yyerror("queue %s has no parent", a->qname); 6053 errs++; 6054 } 6055 6056 if (errs) 6057 return (1); 6058 else 6059 return (0); 6060 } 6061 6062 static int 6063 pf_af_to_proto(sa_family_t af) 6064 { 6065 if (af == AF_INET) 6066 return (ETHERTYPE_IP); 6067 if (af == AF_INET6) 6068 return (ETHERTYPE_IPV6); 6069 6070 return (0); 6071 } 6072 6073 void 6074 expand_eth_rule(struct pfctl_eth_rule *r, 6075 struct node_if *interfaces, struct node_etherproto *protos, 6076 struct node_mac *srcs, struct node_mac *dsts, 6077 struct node_host *ipsrcs, struct node_host *ipdsts, 6078 const char *bridge_to, const char *anchor_call) 6079 { 6080 char tagname[PF_TAG_NAME_SIZE]; 6081 char match_tagname[PF_TAG_NAME_SIZE]; 6082 char qname[PF_QNAME_SIZE]; 6083 6084 if (strlcpy(tagname, r->tagname, sizeof(tagname)) >= sizeof(tagname)) 6085 errx(1, "expand_eth_rule: tagname"); 6086 if (strlcpy(match_tagname, r->match_tagname, sizeof(match_tagname)) >= 6087 sizeof(match_tagname)) 6088 errx(1, "expand_eth_rule: match_tagname"); 6089 if (strlcpy(qname, r->qname, sizeof(qname)) >= sizeof(qname)) 6090 errx(1, "expand_eth_rule: qname"); 6091 6092 LOOP_THROUGH(struct node_if, interface, interfaces, 6093 LOOP_THROUGH(struct node_etherproto, proto, protos, 6094 LOOP_THROUGH(struct node_mac, src, srcs, 6095 LOOP_THROUGH(struct node_mac, dst, dsts, 6096 LOOP_THROUGH(struct node_host, ipsrc, ipsrcs, 6097 LOOP_THROUGH(struct node_host, ipdst, ipdsts, 6098 strlcpy(r->ifname, interface->ifname, 6099 sizeof(r->ifname)); 6100 r->ifnot = interface->not; 6101 r->proto = proto->proto; 6102 if (!r->proto && ipsrc->af) 6103 r->proto = pf_af_to_proto(ipsrc->af); 6104 else if (!r->proto && ipdst->af) 6105 r->proto = pf_af_to_proto(ipdst->af); 6106 bcopy(src->mac, r->src.addr, ETHER_ADDR_LEN); 6107 bcopy(src->mask, r->src.mask, ETHER_ADDR_LEN); 6108 r->src.neg = src->neg; 6109 r->src.isset = src->isset; 6110 r->ipsrc.addr = ipsrc->addr; 6111 r->ipsrc.neg = ipsrc->not; 6112 r->ipdst.addr = ipdst->addr; 6113 r->ipdst.neg = ipdst->not; 6114 bcopy(dst->mac, r->dst.addr, ETHER_ADDR_LEN); 6115 bcopy(dst->mask, r->dst.mask, ETHER_ADDR_LEN); 6116 r->dst.neg = dst->neg; 6117 r->dst.isset = dst->isset; 6118 r->nr = pf->eastack[pf->asd]->match++; 6119 6120 if (strlcpy(r->tagname, tagname, sizeof(r->tagname)) >= 6121 sizeof(r->tagname)) 6122 errx(1, "expand_eth_rule: r->tagname"); 6123 if (strlcpy(r->match_tagname, match_tagname, 6124 sizeof(r->match_tagname)) >= sizeof(r->match_tagname)) 6125 errx(1, "expand_eth_rule: r->match_tagname"); 6126 if (strlcpy(r->qname, qname, sizeof(r->qname)) >= sizeof(r->qname)) 6127 errx(1, "expand_eth_rule: r->qname"); 6128 6129 if (bridge_to) 6130 strlcpy(r->bridge_to, bridge_to, sizeof(r->bridge_to)); 6131 6132 pfctl_append_eth_rule(pf, r, anchor_call); 6133 )))))); 6134 6135 FREE_LIST(struct node_if, interfaces); 6136 FREE_LIST(struct node_etherproto, protos); 6137 FREE_LIST(struct node_mac, srcs); 6138 FREE_LIST(struct node_mac, dsts); 6139 FREE_LIST(struct node_host, ipsrcs); 6140 FREE_LIST(struct node_host, ipdsts); 6141 } 6142 6143 void 6144 expand_rule(struct pfctl_rule *r, 6145 struct node_if *interfaces, struct node_host *rdr_hosts, 6146 struct node_host *nat_hosts, 6147 struct node_proto *protos, struct node_os *src_oses, 6148 struct node_host *src_hosts, struct node_port *src_ports, 6149 struct node_host *dst_hosts, struct node_port *dst_ports, 6150 struct node_uid *uids, struct node_gid *gids, struct node_if *rcv, 6151 struct node_icmp *icmp_types, const char *anchor_call) 6152 { 6153 sa_family_t af = r->af; 6154 int added = 0, error = 0; 6155 char ifname[IF_NAMESIZE]; 6156 char label[PF_RULE_MAX_LABEL_COUNT][PF_RULE_LABEL_SIZE]; 6157 char tagname[PF_TAG_NAME_SIZE]; 6158 char match_tagname[PF_TAG_NAME_SIZE]; 6159 struct pf_pooladdr *pa; 6160 struct node_host *h, *osrch, *odsth; 6161 u_int8_t flags, flagset, keep_state; 6162 6163 memcpy(label, r->label, sizeof(r->label)); 6164 assert(sizeof(r->label) == sizeof(label)); 6165 if (strlcpy(tagname, r->tagname, sizeof(tagname)) >= sizeof(tagname)) 6166 errx(1, "expand_rule: strlcpy"); 6167 if (strlcpy(match_tagname, r->match_tagname, sizeof(match_tagname)) >= 6168 sizeof(match_tagname)) 6169 errx(1, "expand_rule: strlcpy"); 6170 flags = r->flags; 6171 flagset = r->flagset; 6172 keep_state = r->keep_state; 6173 6174 LOOP_THROUGH(struct node_if, interface, interfaces, 6175 LOOP_THROUGH(struct node_proto, proto, protos, 6176 LOOP_THROUGH(struct node_icmp, icmp_type, icmp_types, 6177 LOOP_THROUGH(struct node_host, src_host, src_hosts, 6178 LOOP_THROUGH(struct node_host, dst_host, dst_hosts, 6179 LOOP_THROUGH(struct node_port, src_port, src_ports, 6180 LOOP_THROUGH(struct node_port, dst_port, dst_ports, 6181 LOOP_THROUGH(struct node_os, src_os, src_oses, 6182 LOOP_THROUGH(struct node_uid, uid, uids, 6183 LOOP_THROUGH(struct node_gid, gid, gids, 6184 6185 r->af = af; 6186 /* for link-local IPv6 address, interface must match up */ 6187 if ((r->af && src_host->af && r->af != src_host->af) || 6188 (r->af && dst_host->af && r->af != dst_host->af) || 6189 (src_host->af && dst_host->af && 6190 src_host->af != dst_host->af) || 6191 (src_host->ifindex && dst_host->ifindex && 6192 src_host->ifindex != dst_host->ifindex) || 6193 (src_host->ifindex && *interface->ifname && 6194 src_host->ifindex != if_nametoindex(interface->ifname)) || 6195 (dst_host->ifindex && *interface->ifname && 6196 dst_host->ifindex != if_nametoindex(interface->ifname))) 6197 continue; 6198 if (!r->af && src_host->af) 6199 r->af = src_host->af; 6200 else if (!r->af && dst_host->af) 6201 r->af = dst_host->af; 6202 6203 if (*interface->ifname) 6204 strlcpy(r->ifname, interface->ifname, 6205 sizeof(r->ifname)); 6206 else if (if_indextoname(src_host->ifindex, ifname)) 6207 strlcpy(r->ifname, ifname, sizeof(r->ifname)); 6208 else if (if_indextoname(dst_host->ifindex, ifname)) 6209 strlcpy(r->ifname, ifname, sizeof(r->ifname)); 6210 else 6211 memset(r->ifname, '\0', sizeof(r->ifname)); 6212 6213 memcpy(r->label, label, sizeof(r->label)); 6214 if (strlcpy(r->tagname, tagname, sizeof(r->tagname)) >= 6215 sizeof(r->tagname)) 6216 errx(1, "expand_rule: strlcpy"); 6217 if (strlcpy(r->match_tagname, match_tagname, 6218 sizeof(r->match_tagname)) >= sizeof(r->match_tagname)) 6219 errx(1, "expand_rule: strlcpy"); 6220 6221 osrch = odsth = NULL; 6222 if (src_host->addr.type == PF_ADDR_DYNIFTL) { 6223 osrch = src_host; 6224 if ((src_host = gen_dynnode(src_host, r->af)) == NULL) 6225 err(1, "expand_rule: calloc"); 6226 } 6227 if (dst_host->addr.type == PF_ADDR_DYNIFTL) { 6228 odsth = dst_host; 6229 if ((dst_host = gen_dynnode(dst_host, r->af)) == NULL) 6230 err(1, "expand_rule: calloc"); 6231 } 6232 6233 error += check_netmask(src_host, r->af); 6234 error += check_netmask(dst_host, r->af); 6235 6236 r->ifnot = interface->not; 6237 r->proto = proto->proto; 6238 r->src.addr = src_host->addr; 6239 r->src.neg = src_host->not; 6240 r->src.port[0] = src_port->port[0]; 6241 r->src.port[1] = src_port->port[1]; 6242 r->src.port_op = src_port->op; 6243 r->dst.addr = dst_host->addr; 6244 r->dst.neg = dst_host->not; 6245 r->dst.port[0] = dst_port->port[0]; 6246 r->dst.port[1] = dst_port->port[1]; 6247 r->dst.port_op = dst_port->op; 6248 r->uid.op = uid->op; 6249 r->uid.uid[0] = uid->uid[0]; 6250 r->uid.uid[1] = uid->uid[1]; 6251 r->gid.op = gid->op; 6252 r->gid.gid[0] = gid->gid[0]; 6253 r->gid.gid[1] = gid->gid[1]; 6254 if (rcv) { 6255 strlcpy(r->rcv_ifname, rcv->ifname, 6256 sizeof(r->rcv_ifname)); 6257 } 6258 r->type = icmp_type->type; 6259 r->code = icmp_type->code; 6260 6261 if ((keep_state == PF_STATE_MODULATE || 6262 keep_state == PF_STATE_SYNPROXY) && 6263 r->proto && r->proto != IPPROTO_TCP) 6264 r->keep_state = PF_STATE_NORMAL; 6265 else 6266 r->keep_state = keep_state; 6267 6268 if (r->proto && r->proto != IPPROTO_TCP) { 6269 r->flags = 0; 6270 r->flagset = 0; 6271 } else { 6272 r->flags = flags; 6273 r->flagset = flagset; 6274 } 6275 if (icmp_type->proto && r->proto != icmp_type->proto) { 6276 yyerror("icmp-type mismatch"); 6277 error++; 6278 } 6279 6280 if (src_os && src_os->os) { 6281 r->os_fingerprint = pfctl_get_fingerprint(src_os->os); 6282 if ((pf->opts & PF_OPT_VERBOSE2) && 6283 r->os_fingerprint == PF_OSFP_NOMATCH) 6284 fprintf(stderr, 6285 "warning: unknown '%s' OS fingerprint\n", 6286 src_os->os); 6287 } else { 6288 r->os_fingerprint = PF_OSFP_ANY; 6289 } 6290 6291 TAILQ_INIT(&r->rdr.list); 6292 for (h = rdr_hosts; h != NULL; h = h->next) { 6293 pa = calloc(1, sizeof(struct pf_pooladdr)); 6294 if (pa == NULL) 6295 err(1, "expand_rule: calloc"); 6296 pa->addr = h->addr; 6297 if (h->ifname != NULL) { 6298 if (strlcpy(pa->ifname, h->ifname, 6299 sizeof(pa->ifname)) >= 6300 sizeof(pa->ifname)) 6301 errx(1, "expand_rule: strlcpy"); 6302 } else 6303 pa->ifname[0] = 0; 6304 TAILQ_INSERT_TAIL(&r->rpool.list, pa, entries); 6305 } 6306 TAILQ_INIT(&r->nat.list); 6307 for (h = nat_hosts; h != NULL; h = h->next) { 6308 pa = calloc(1, sizeof(struct pf_pooladdr)); 6309 if (pa == NULL) 6310 err(1, "expand_rule: calloc"); 6311 pa->addr = h->addr; 6312 if (h->ifname != NULL) { 6313 if (strlcpy(pa->ifname, h->ifname, 6314 sizeof(pa->ifname)) >= 6315 sizeof(pa->ifname)) 6316 errx(1, "expand_rule: strlcpy"); 6317 } else 6318 pa->ifname[0] = 0; 6319 TAILQ_INSERT_TAIL(&r->nat.list, pa, entries); 6320 } 6321 6322 r->nat.proxy_port[0] = PF_NAT_PROXY_PORT_LOW; 6323 r->nat.proxy_port[1] = PF_NAT_PROXY_PORT_HIGH; 6324 6325 if (rule_consistent(r, anchor_call[0]) < 0 || error) 6326 yyerror("skipping rule due to errors"); 6327 else { 6328 r->nr = pf->astack[pf->asd]->match++; 6329 pfctl_append_rule(pf, r, anchor_call); 6330 added++; 6331 } 6332 6333 if (osrch && src_host->addr.type == PF_ADDR_DYNIFTL) { 6334 free(src_host); 6335 src_host = osrch; 6336 } 6337 if (odsth && dst_host->addr.type == PF_ADDR_DYNIFTL) { 6338 free(dst_host); 6339 dst_host = odsth; 6340 } 6341 6342 )))))))))); 6343 6344 FREE_LIST(struct node_if, interfaces); 6345 FREE_LIST(struct node_proto, protos); 6346 FREE_LIST(struct node_host, src_hosts); 6347 FREE_LIST(struct node_port, src_ports); 6348 FREE_LIST(struct node_os, src_oses); 6349 FREE_LIST(struct node_host, dst_hosts); 6350 FREE_LIST(struct node_port, dst_ports); 6351 FREE_LIST(struct node_uid, uids); 6352 FREE_LIST(struct node_gid, gids); 6353 FREE_LIST(struct node_icmp, icmp_types); 6354 FREE_LIST(struct node_host, rdr_hosts); 6355 FREE_LIST(struct node_host, nat_hosts); 6356 6357 if (!added) 6358 yyerror("rule expands to no valid combination"); 6359 } 6360 6361 int 6362 expand_skip_interface(struct node_if *interfaces) 6363 { 6364 int errs = 0; 6365 6366 if (!interfaces || (!interfaces->next && !interfaces->not && 6367 !strcmp(interfaces->ifname, "none"))) { 6368 if (pf->opts & PF_OPT_VERBOSE) 6369 printf("set skip on none\n"); 6370 errs = pfctl_set_interface_flags(pf, "", PFI_IFLAG_SKIP, 0); 6371 return (errs); 6372 } 6373 6374 if (pf->opts & PF_OPT_VERBOSE) 6375 printf("set skip on {"); 6376 LOOP_THROUGH(struct node_if, interface, interfaces, 6377 if (pf->opts & PF_OPT_VERBOSE) 6378 printf(" %s", interface->ifname); 6379 if (interface->not) { 6380 yyerror("skip on ! <interface> is not supported"); 6381 errs++; 6382 } else 6383 errs += pfctl_set_interface_flags(pf, 6384 interface->ifname, PFI_IFLAG_SKIP, 1); 6385 ); 6386 if (pf->opts & PF_OPT_VERBOSE) 6387 printf(" }\n"); 6388 6389 FREE_LIST(struct node_if, interfaces); 6390 6391 if (errs) 6392 return (1); 6393 else 6394 return (0); 6395 } 6396 6397 void 6398 freehostlist(struct node_host *h) 6399 { 6400 FREE_LIST(struct node_host, h); 6401 } 6402 6403 #undef FREE_LIST 6404 #undef LOOP_THROUGH 6405 6406 int 6407 check_rulestate(int desired_state) 6408 { 6409 if (require_order && (rulestate > desired_state)) { 6410 yyerror("Rules must be in order: options, ethernet, " 6411 "normalization, queueing, translation, filtering"); 6412 return (1); 6413 } 6414 rulestate = desired_state; 6415 return (0); 6416 } 6417 6418 int 6419 kw_cmp(const void *k, const void *e) 6420 { 6421 return (strcmp(k, ((const struct keywords *)e)->k_name)); 6422 } 6423 6424 int 6425 lookup(char *s) 6426 { 6427 /* this has to be sorted always */ 6428 static const struct keywords keywords[] = { 6429 { "af-to", AFTO}, 6430 { "all", ALL}, 6431 { "allow-opts", ALLOWOPTS}, 6432 { "altq", ALTQ}, 6433 { "anchor", ANCHOR}, 6434 { "antispoof", ANTISPOOF}, 6435 { "any", ANY}, 6436 { "bandwidth", BANDWIDTH}, 6437 { "binat", BINAT}, 6438 { "binat-anchor", BINATANCHOR}, 6439 { "bitmask", BITMASK}, 6440 { "block", BLOCK}, 6441 { "block-policy", BLOCKPOLICY}, 6442 { "bridge-to", BRIDGE_TO}, 6443 { "buckets", BUCKETS}, 6444 { "cbq", CBQ}, 6445 { "code", CODE}, 6446 { "codelq", CODEL}, 6447 { "debug", DEBUG}, 6448 { "divert-reply", DIVERTREPLY}, 6449 { "divert-to", DIVERTTO}, 6450 { "dnpipe", DNPIPE}, 6451 { "dnqueue", DNQUEUE}, 6452 { "drop", DROP}, 6453 { "dup-to", DUPTO}, 6454 { "endpoint-independent", ENDPI}, 6455 { "ether", ETHER}, 6456 { "fail-policy", FAILPOLICY}, 6457 { "fairq", FAIRQ}, 6458 { "fastroute", FASTROUTE}, 6459 { "file", FILENAME}, 6460 { "fingerprints", FINGERPRINTS}, 6461 { "flags", FLAGS}, 6462 { "floating", FLOATING}, 6463 { "flush", FLUSH}, 6464 { "for", FOR}, 6465 { "fragment", FRAGMENT}, 6466 { "from", FROM}, 6467 { "global", GLOBAL}, 6468 { "group", GROUP}, 6469 { "hfsc", HFSC}, 6470 { "hogs", HOGS}, 6471 { "hostid", HOSTID}, 6472 { "icmp-type", ICMPTYPE}, 6473 { "icmp6-type", ICMP6TYPE}, 6474 { "if-bound", IFBOUND}, 6475 { "in", IN}, 6476 { "include", INCLUDE}, 6477 { "inet", INET}, 6478 { "inet6", INET6}, 6479 { "interval", INTERVAL}, 6480 { "keep", KEEP}, 6481 { "keepcounters", KEEPCOUNTERS}, 6482 { "l3", L3}, 6483 { "label", LABEL}, 6484 { "limit", LIMIT}, 6485 { "linkshare", LINKSHARE}, 6486 { "load", LOAD}, 6487 { "log", LOG}, 6488 { "loginterface", LOGINTERFACE}, 6489 { "map-e-portset", MAPEPORTSET}, 6490 { "match", MATCH}, 6491 { "matches", MATCHES}, 6492 { "max", MAXIMUM}, 6493 { "max-mss", MAXMSS}, 6494 { "max-src-conn", MAXSRCCONN}, 6495 { "max-src-conn-rate", MAXSRCCONNRATE}, 6496 { "max-src-nodes", MAXSRCNODES}, 6497 { "max-src-states", MAXSRCSTATES}, 6498 { "min-ttl", MINTTL}, 6499 { "modulate", MODULATE}, 6500 { "nat", NAT}, 6501 { "nat-anchor", NATANCHOR}, 6502 { "no", NO}, 6503 { "no-df", NODF}, 6504 { "no-route", NOROUTE}, 6505 { "no-sync", NOSYNC}, 6506 { "on", ON}, 6507 { "optimization", OPTIMIZATION}, 6508 { "os", OS}, 6509 { "out", OUT}, 6510 { "overload", OVERLOAD}, 6511 { "pass", PASS}, 6512 { "pflow", PFLOW}, 6513 { "port", PORT}, 6514 { "prio", PRIO}, 6515 { "priority", PRIORITY}, 6516 { "priq", PRIQ}, 6517 { "probability", PROBABILITY}, 6518 { "proto", PROTO}, 6519 { "qlimit", QLIMIT}, 6520 { "queue", QUEUE}, 6521 { "quick", QUICK}, 6522 { "random", RANDOM}, 6523 { "random-id", RANDOMID}, 6524 { "rdr", RDR}, 6525 { "rdr-anchor", RDRANCHOR}, 6526 { "realtime", REALTIME}, 6527 { "reassemble", REASSEMBLE}, 6528 { "received-on", RECEIVEDON}, 6529 { "reply-to", REPLYTO}, 6530 { "require-order", REQUIREORDER}, 6531 { "return", RETURN}, 6532 { "return-icmp", RETURNICMP}, 6533 { "return-icmp6", RETURNICMP6}, 6534 { "return-rst", RETURNRST}, 6535 { "ridentifier", RIDENTIFIER}, 6536 { "round-robin", ROUNDROBIN}, 6537 { "route", ROUTE}, 6538 { "route-to", ROUTETO}, 6539 { "rtable", RTABLE}, 6540 { "rule", RULE}, 6541 { "ruleset-optimization", RULESET_OPTIMIZATION}, 6542 { "scrub", SCRUB}, 6543 { "set", SET}, 6544 { "set-tos", SETTOS}, 6545 { "skip", SKIP}, 6546 { "sloppy", SLOPPY}, 6547 { "source-hash", SOURCEHASH}, 6548 { "source-track", SOURCETRACK}, 6549 { "state", STATE}, 6550 { "state-defaults", STATEDEFAULTS}, 6551 { "state-policy", STATEPOLICY}, 6552 { "static-port", STATICPORT}, 6553 { "sticky-address", STICKYADDRESS}, 6554 { "syncookies", SYNCOOKIES}, 6555 { "synproxy", SYNPROXY}, 6556 { "table", TABLE}, 6557 { "tag", TAG}, 6558 { "tagged", TAGGED}, 6559 { "target", TARGET}, 6560 { "tbrsize", TBRSIZE}, 6561 { "timeout", TIMEOUT}, 6562 { "to", TO}, 6563 { "tos", TOS}, 6564 { "ttl", TTL}, 6565 { "upperlimit", UPPERLIMIT}, 6566 { "urpf-failed", URPFFAILED}, 6567 { "user", USER}, 6568 }; 6569 const struct keywords *p; 6570 6571 p = bsearch(s, keywords, sizeof(keywords)/sizeof(keywords[0]), 6572 sizeof(keywords[0]), kw_cmp); 6573 6574 if (p) { 6575 if (debug > 1) 6576 fprintf(stderr, "%s: %d\n", s, p->k_val); 6577 return (p->k_val); 6578 } else { 6579 if (debug > 1) 6580 fprintf(stderr, "string: %s\n", s); 6581 return (STRING); 6582 } 6583 } 6584 6585 #define MAXPUSHBACK 128 6586 6587 static char *parsebuf; 6588 static int parseindex; 6589 static char pushback_buffer[MAXPUSHBACK]; 6590 static int pushback_index = 0; 6591 6592 int 6593 lgetc(int quotec) 6594 { 6595 int c, next; 6596 6597 if (parsebuf) { 6598 /* Read character from the parsebuffer instead of input. */ 6599 if (parseindex >= 0) { 6600 c = parsebuf[parseindex++]; 6601 if (c != '\0') 6602 return (c); 6603 parsebuf = NULL; 6604 } else 6605 parseindex++; 6606 } 6607 6608 if (pushback_index) 6609 return (pushback_buffer[--pushback_index]); 6610 6611 if (quotec) { 6612 if ((c = getc(file->stream)) == EOF) { 6613 yyerror("reached end of file while parsing quoted string"); 6614 if (popfile() == EOF) 6615 return (EOF); 6616 return (quotec); 6617 } 6618 return (c); 6619 } 6620 6621 while ((c = getc(file->stream)) == '\\') { 6622 next = getc(file->stream); 6623 if (next != '\n') { 6624 c = next; 6625 break; 6626 } 6627 yylval.lineno = file->lineno; 6628 file->lineno++; 6629 } 6630 6631 while (c == EOF) { 6632 if (popfile() == EOF) 6633 return (EOF); 6634 c = getc(file->stream); 6635 } 6636 return (c); 6637 } 6638 6639 int 6640 lungetc(int c) 6641 { 6642 if (c == EOF) 6643 return (EOF); 6644 if (parsebuf) { 6645 parseindex--; 6646 if (parseindex >= 0) 6647 return (c); 6648 } 6649 if (pushback_index < MAXPUSHBACK-1) 6650 return (pushback_buffer[pushback_index++] = c); 6651 else 6652 return (EOF); 6653 } 6654 6655 int 6656 findeol(void) 6657 { 6658 int c; 6659 6660 parsebuf = NULL; 6661 6662 /* skip to either EOF or the first real EOL */ 6663 while (1) { 6664 if (pushback_index) 6665 c = pushback_buffer[--pushback_index]; 6666 else 6667 c = lgetc(0); 6668 if (c == '\n') { 6669 file->lineno++; 6670 break; 6671 } 6672 if (c == EOF) 6673 break; 6674 } 6675 return (ERROR); 6676 } 6677 6678 int 6679 yylex(void) 6680 { 6681 char buf[8096]; 6682 char *p, *val; 6683 int quotec, next, c; 6684 int token; 6685 6686 top: 6687 p = buf; 6688 while ((c = lgetc(0)) == ' ' || c == '\t') 6689 ; /* nothing */ 6690 6691 yylval.lineno = file->lineno; 6692 if (c == '#') 6693 while ((c = lgetc(0)) != '\n' && c != EOF) 6694 ; /* nothing */ 6695 if (c == '$' && parsebuf == NULL) { 6696 while (1) { 6697 if ((c = lgetc(0)) == EOF) 6698 return (0); 6699 6700 if (p + 1 >= buf + sizeof(buf) - 1) { 6701 yyerror("string too long"); 6702 return (findeol()); 6703 } 6704 if (isalnum(c) || c == '_') { 6705 *p++ = (char)c; 6706 continue; 6707 } 6708 *p = '\0'; 6709 lungetc(c); 6710 break; 6711 } 6712 val = symget(buf); 6713 if (val == NULL) { 6714 yyerror("macro '%s' not defined", buf); 6715 return (findeol()); 6716 } 6717 parsebuf = val; 6718 parseindex = 0; 6719 goto top; 6720 } 6721 6722 switch (c) { 6723 case '\'': 6724 case '"': 6725 quotec = c; 6726 while (1) { 6727 if ((c = lgetc(quotec)) == EOF) 6728 return (0); 6729 if (c == '\n') { 6730 file->lineno++; 6731 continue; 6732 } else if (c == '\\') { 6733 if ((next = lgetc(quotec)) == EOF) 6734 return (0); 6735 if (next == quotec || c == ' ' || c == '\t') 6736 c = next; 6737 else if (next == '\n') { 6738 file->lineno++; 6739 continue; 6740 } 6741 else 6742 lungetc(next); 6743 } else if (c == quotec) { 6744 *p = '\0'; 6745 break; 6746 } 6747 if (p + 1 >= buf + sizeof(buf) - 1) { 6748 yyerror("string too long"); 6749 return (findeol()); 6750 } 6751 *p++ = (char)c; 6752 } 6753 yylval.v.string = strdup(buf); 6754 if (yylval.v.string == NULL) 6755 err(1, "yylex: strdup"); 6756 return (STRING); 6757 case '!': 6758 next = lgetc(0); 6759 if (next == '=') 6760 return (NE); 6761 lungetc(next); 6762 break; 6763 case '<': 6764 next = lgetc(0); 6765 if (next == '>') { 6766 yylval.v.i = PF_OP_XRG; 6767 return (PORTBINARY); 6768 } else if (next == '=') 6769 return (LE); 6770 lungetc(next); 6771 break; 6772 case '>': 6773 next = lgetc(0); 6774 if (next == '<') { 6775 yylval.v.i = PF_OP_IRG; 6776 return (PORTBINARY); 6777 } else if (next == '=') 6778 return (GE); 6779 lungetc(next); 6780 break; 6781 case '-': 6782 next = lgetc(0); 6783 if (next == '>') 6784 return (ARROW); 6785 lungetc(next); 6786 break; 6787 } 6788 6789 #define allowed_to_end_number(x) \ 6790 (isspace(x) || x == ')' || x ==',' || x == '/' || x == '}' || x == '=') 6791 6792 if (c == '-' || isdigit(c)) { 6793 do { 6794 *p++ = c; 6795 if ((unsigned)(p-buf) >= sizeof(buf)) { 6796 yyerror("string too long"); 6797 return (findeol()); 6798 } 6799 } while ((c = lgetc(0)) != EOF && isdigit(c)); 6800 lungetc(c); 6801 if (p == buf + 1 && buf[0] == '-') 6802 goto nodigits; 6803 if (c == EOF || allowed_to_end_number(c)) { 6804 const char *errstr = NULL; 6805 6806 *p = '\0'; 6807 yylval.v.number = strtonum(buf, LLONG_MIN, 6808 LLONG_MAX, &errstr); 6809 if (errstr) { 6810 yyerror("\"%s\" invalid number: %s", 6811 buf, errstr); 6812 return (findeol()); 6813 } 6814 return (NUMBER); 6815 } else { 6816 nodigits: 6817 while (p > buf + 1) 6818 lungetc(*--p); 6819 c = *--p; 6820 if (c == '-') 6821 return (c); 6822 } 6823 } 6824 6825 #define allowed_in_string(x) \ 6826 (isalnum(x) || (ispunct(x) && x != '(' && x != ')' && \ 6827 x != '{' && x != '}' && x != '<' && x != '>' && \ 6828 x != '!' && x != '=' && x != '/' && x != '#' && \ 6829 x != ',')) 6830 6831 if (isalnum(c) || c == ':' || c == '_') { 6832 do { 6833 *p++ = c; 6834 if ((unsigned)(p-buf) >= sizeof(buf)) { 6835 yyerror("string too long"); 6836 return (findeol()); 6837 } 6838 } while ((c = lgetc(0)) != EOF && (allowed_in_string(c))); 6839 lungetc(c); 6840 *p = '\0'; 6841 if ((token = lookup(buf)) == STRING) 6842 if ((yylval.v.string = strdup(buf)) == NULL) 6843 err(1, "yylex: strdup"); 6844 return (token); 6845 } 6846 if (c == '\n') { 6847 yylval.lineno = file->lineno; 6848 file->lineno++; 6849 } 6850 if (c == EOF) 6851 return (0); 6852 return (c); 6853 } 6854 6855 int 6856 check_file_secrecy(int fd, const char *fname) 6857 { 6858 struct stat st; 6859 6860 if (fstat(fd, &st)) { 6861 warn("cannot stat %s", fname); 6862 return (-1); 6863 } 6864 if (st.st_uid != 0 && st.st_uid != getuid()) { 6865 warnx("%s: owner not root or current user", fname); 6866 return (-1); 6867 } 6868 if (st.st_mode & (S_IRWXG | S_IRWXO)) { 6869 warnx("%s: group/world readable/writeable", fname); 6870 return (-1); 6871 } 6872 return (0); 6873 } 6874 6875 struct file * 6876 pushfile(const char *name, int secret) 6877 { 6878 struct file *nfile; 6879 6880 if ((nfile = calloc(1, sizeof(struct file))) == NULL || 6881 (nfile->name = strdup(name)) == NULL) { 6882 warn("malloc"); 6883 return (NULL); 6884 } 6885 if (TAILQ_FIRST(&files) == NULL && strcmp(nfile->name, "-") == 0) { 6886 nfile->stream = stdin; 6887 free(nfile->name); 6888 if ((nfile->name = strdup("stdin")) == NULL) { 6889 warn("strdup"); 6890 free(nfile); 6891 return (NULL); 6892 } 6893 } else if ((nfile->stream = fopen(nfile->name, "r")) == NULL) { 6894 warn("%s", nfile->name); 6895 free(nfile->name); 6896 free(nfile); 6897 return (NULL); 6898 } else if (secret && 6899 check_file_secrecy(fileno(nfile->stream), nfile->name)) { 6900 fclose(nfile->stream); 6901 free(nfile->name); 6902 free(nfile); 6903 return (NULL); 6904 } 6905 nfile->lineno = 1; 6906 TAILQ_INSERT_TAIL(&files, nfile, entry); 6907 return (nfile); 6908 } 6909 6910 int 6911 popfile(void) 6912 { 6913 struct file *prev; 6914 6915 if ((prev = TAILQ_PREV(file, files, entry)) != NULL) { 6916 prev->errors += file->errors; 6917 TAILQ_REMOVE(&files, file, entry); 6918 fclose(file->stream); 6919 free(file->name); 6920 free(file); 6921 file = prev; 6922 return (0); 6923 } 6924 return (EOF); 6925 } 6926 6927 int 6928 parse_config(char *filename, struct pfctl *xpf) 6929 { 6930 int errors = 0; 6931 struct sym *sym; 6932 6933 pf = xpf; 6934 errors = 0; 6935 rulestate = PFCTL_STATE_NONE; 6936 returnicmpdefault = (ICMP_UNREACH << 8) | ICMP_UNREACH_PORT; 6937 returnicmp6default = 6938 (ICMP6_DST_UNREACH << 8) | ICMP6_DST_UNREACH_NOPORT; 6939 blockpolicy = PFRULE_DROP; 6940 failpolicy = PFRULE_DROP; 6941 require_order = 1; 6942 6943 if ((file = pushfile(filename, 0)) == NULL) { 6944 warn("cannot open the main config file!"); 6945 return (-1); 6946 } 6947 6948 yyparse(); 6949 errors = file->errors; 6950 popfile(); 6951 6952 /* Free macros and check which have not been used. */ 6953 while ((sym = TAILQ_FIRST(&symhead))) { 6954 if ((pf->opts & PF_OPT_VERBOSE2) && !sym->used) 6955 fprintf(stderr, "warning: macro '%s' not " 6956 "used\n", sym->nam); 6957 free(sym->nam); 6958 free(sym->val); 6959 TAILQ_REMOVE(&symhead, sym, entry); 6960 free(sym); 6961 } 6962 6963 return (errors ? -1 : 0); 6964 } 6965 6966 int 6967 symset(const char *nam, const char *val, int persist) 6968 { 6969 struct sym *sym; 6970 6971 for (sym = TAILQ_FIRST(&symhead); sym && strcmp(nam, sym->nam); 6972 sym = TAILQ_NEXT(sym, entry)) 6973 ; /* nothing */ 6974 6975 if (sym != NULL) { 6976 if (sym->persist == 1) 6977 return (0); 6978 else { 6979 free(sym->nam); 6980 free(sym->val); 6981 TAILQ_REMOVE(&symhead, sym, entry); 6982 free(sym); 6983 } 6984 } 6985 if ((sym = calloc(1, sizeof(*sym))) == NULL) 6986 return (-1); 6987 6988 sym->nam = strdup(nam); 6989 if (sym->nam == NULL) { 6990 free(sym); 6991 return (-1); 6992 } 6993 sym->val = strdup(val); 6994 if (sym->val == NULL) { 6995 free(sym->nam); 6996 free(sym); 6997 return (-1); 6998 } 6999 sym->used = 0; 7000 sym->persist = persist; 7001 TAILQ_INSERT_TAIL(&symhead, sym, entry); 7002 return (0); 7003 } 7004 7005 int 7006 pfctl_cmdline_symset(char *s) 7007 { 7008 char *sym, *val; 7009 int ret; 7010 7011 if ((val = strrchr(s, '=')) == NULL) 7012 return (-1); 7013 7014 if ((sym = malloc(strlen(s) - strlen(val) + 1)) == NULL) 7015 err(1, "pfctl_cmdline_symset: malloc"); 7016 7017 strlcpy(sym, s, strlen(s) - strlen(val) + 1); 7018 7019 ret = symset(sym, val + 1, 1); 7020 free(sym); 7021 7022 return (ret); 7023 } 7024 7025 char * 7026 symget(const char *nam) 7027 { 7028 struct sym *sym; 7029 7030 TAILQ_FOREACH(sym, &symhead, entry) 7031 if (strcmp(nam, sym->nam) == 0) { 7032 sym->used = 1; 7033 return (sym->val); 7034 } 7035 return (NULL); 7036 } 7037 7038 void 7039 mv_rules(struct pfctl_ruleset *src, struct pfctl_ruleset *dst) 7040 { 7041 int i; 7042 struct pfctl_rule *r; 7043 7044 for (i = 0; i < PF_RULESET_MAX; ++i) { 7045 while ((r = TAILQ_FIRST(src->rules[i].active.ptr)) 7046 != NULL) { 7047 TAILQ_REMOVE(src->rules[i].active.ptr, r, entries); 7048 TAILQ_INSERT_TAIL(dst->rules[i].active.ptr, r, entries); 7049 dst->anchor->match++; 7050 } 7051 src->anchor->match = 0; 7052 while ((r = TAILQ_FIRST(src->rules[i].inactive.ptr)) 7053 != NULL) { 7054 TAILQ_REMOVE(src->rules[i].inactive.ptr, r, entries); 7055 TAILQ_INSERT_TAIL(dst->rules[i].inactive.ptr, 7056 r, entries); 7057 } 7058 } 7059 } 7060 7061 void 7062 mv_eth_rules(struct pfctl_eth_ruleset *src, struct pfctl_eth_ruleset *dst) 7063 { 7064 struct pfctl_eth_rule *r; 7065 7066 while ((r = TAILQ_FIRST(&src->rules)) != NULL) { 7067 TAILQ_REMOVE(&src->rules, r, entries); 7068 TAILQ_INSERT_TAIL(&dst->rules, r, entries); 7069 dst->anchor->match++; 7070 } 7071 src->anchor->match = 0; 7072 } 7073 7074 void 7075 decide_address_family(struct node_host *n, sa_family_t *af) 7076 { 7077 if (*af != 0 || n == NULL) 7078 return; 7079 *af = n->af; 7080 while ((n = n->next) != NULL) { 7081 if (n->af != *af) { 7082 *af = 0; 7083 return; 7084 } 7085 } 7086 } 7087 7088 void 7089 remove_invalid_hosts(struct node_host **nh, sa_family_t *af) 7090 { 7091 struct node_host *n = *nh, *prev = NULL; 7092 7093 while (n != NULL) { 7094 if (*af && n->af && n->af != *af) { 7095 /* unlink and free n */ 7096 struct node_host *next = n->next; 7097 7098 /* adjust tail pointer */ 7099 if (n == (*nh)->tail) 7100 (*nh)->tail = prev; 7101 /* adjust previous node's next pointer */ 7102 if (prev == NULL) 7103 *nh = next; 7104 else 7105 prev->next = next; 7106 /* free node */ 7107 if (n->ifname != NULL) 7108 free(n->ifname); 7109 free(n); 7110 n = next; 7111 } else { 7112 if (n->af && !*af) 7113 *af = n->af; 7114 prev = n; 7115 n = n->next; 7116 } 7117 } 7118 } 7119 7120 int 7121 invalid_redirect(struct node_host *nh, sa_family_t af) 7122 { 7123 if (!af) { 7124 struct node_host *n; 7125 7126 /* tables and dyniftl are ok without an address family */ 7127 for (n = nh; n != NULL; n = n->next) { 7128 if (n->addr.type != PF_ADDR_TABLE && 7129 n->addr.type != PF_ADDR_DYNIFTL) { 7130 yyerror("address family not given and " 7131 "translation address expands to multiple " 7132 "address families"); 7133 return (1); 7134 } 7135 } 7136 } 7137 if (nh == NULL) { 7138 yyerror("no translation address with matching address family " 7139 "found."); 7140 return (1); 7141 } 7142 return (0); 7143 } 7144 7145 int 7146 atoul(char *s, u_long *ulvalp) 7147 { 7148 u_long ulval; 7149 char *ep; 7150 7151 errno = 0; 7152 ulval = strtoul(s, &ep, 0); 7153 if (s[0] == '\0' || *ep != '\0') 7154 return (-1); 7155 if (errno == ERANGE && ulval == ULONG_MAX) 7156 return (-1); 7157 *ulvalp = ulval; 7158 return (0); 7159 } 7160 7161 int 7162 getservice(char *n) 7163 { 7164 struct servent *s; 7165 u_long ulval; 7166 7167 if (atoul(n, &ulval) == 0) { 7168 if (ulval > 65535) { 7169 yyerror("illegal port value %lu", ulval); 7170 return (-1); 7171 } 7172 return (htons(ulval)); 7173 } else { 7174 s = getservbyname(n, "tcp"); 7175 if (s == NULL) 7176 s = getservbyname(n, "udp"); 7177 if (s == NULL) 7178 s = getservbyname(n, "sctp"); 7179 if (s == NULL) { 7180 yyerror("unknown port %s", n); 7181 return (-1); 7182 } 7183 return (s->s_port); 7184 } 7185 } 7186 7187 int 7188 rule_label(struct pfctl_rule *r, char *s[PF_RULE_MAX_LABEL_COUNT]) 7189 { 7190 for (int i = 0; i < PF_RULE_MAX_LABEL_COUNT; i++) { 7191 if (s[i] == NULL) 7192 return (0); 7193 7194 if (strlcpy(r->label[i], s[i], sizeof(r->label[0])) >= 7195 sizeof(r->label[0])) { 7196 yyerror("rule label too long (max %d chars)", 7197 sizeof(r->label[0])-1); 7198 return (-1); 7199 } 7200 } 7201 return (0); 7202 } 7203 7204 int 7205 eth_rule_label(struct pfctl_eth_rule *r, char *s[PF_RULE_MAX_LABEL_COUNT]) 7206 { 7207 for (int i = 0; i < PF_RULE_MAX_LABEL_COUNT; i++) { 7208 if (s[i] == NULL) 7209 return (0); 7210 7211 if (strlcpy(r->label[i], s[i], sizeof(r->label[0])) >= 7212 sizeof(r->label[0])) { 7213 yyerror("rule label too long (max %d chars)", 7214 sizeof(r->label[0])-1); 7215 return (-1); 7216 } 7217 } 7218 return (0); 7219 } 7220 7221 u_int16_t 7222 parseicmpspec(char *w, sa_family_t af) 7223 { 7224 const struct icmpcodeent *p; 7225 u_long ulval; 7226 u_int8_t icmptype; 7227 7228 if (af == AF_INET) 7229 icmptype = returnicmpdefault >> 8; 7230 else 7231 icmptype = returnicmp6default >> 8; 7232 7233 if (atoul(w, &ulval) == -1) { 7234 if ((p = geticmpcodebyname(icmptype, w, af)) == NULL) { 7235 yyerror("unknown icmp code %s", w); 7236 return (0); 7237 } 7238 ulval = p->code; 7239 } 7240 if (ulval > 255) { 7241 yyerror("invalid icmp code %lu", ulval); 7242 return (0); 7243 } 7244 return (icmptype << 8 | ulval); 7245 } 7246 7247 int 7248 parseport(char *port, struct range *r, int extensions) 7249 { 7250 char *p = strchr(port, ':'); 7251 7252 if (p == NULL) { 7253 if ((r->a = getservice(port)) == -1) 7254 return (-1); 7255 r->b = 0; 7256 r->t = PF_OP_NONE; 7257 return (0); 7258 } 7259 if ((extensions & PPORT_STAR) && !strcmp(p+1, "*")) { 7260 *p = 0; 7261 if ((r->a = getservice(port)) == -1) 7262 return (-1); 7263 r->b = 0; 7264 r->t = PF_OP_IRG; 7265 return (0); 7266 } 7267 if ((extensions & PPORT_RANGE)) { 7268 *p++ = 0; 7269 if ((r->a = getservice(port)) == -1 || 7270 (r->b = getservice(p)) == -1) 7271 return (-1); 7272 if (r->a == r->b) { 7273 r->b = 0; 7274 r->t = PF_OP_NONE; 7275 } else 7276 r->t = PF_OP_RRG; 7277 return (0); 7278 } 7279 return (-1); 7280 } 7281 7282 int 7283 pfctl_load_anchors(int dev, struct pfctl *pf, struct pfr_buffer *trans) 7284 { 7285 struct loadanchors *la; 7286 7287 TAILQ_FOREACH(la, &loadanchorshead, entries) { 7288 if (pf->opts & PF_OPT_VERBOSE) 7289 fprintf(stderr, "\nLoading anchor %s from %s\n", 7290 la->anchorname, la->filename); 7291 if (pfctl_rules(dev, la->filename, pf->opts, pf->optimize, 7292 la->anchorname, trans) == -1) 7293 return (-1); 7294 } 7295 7296 return (0); 7297 } 7298 7299 int 7300 kw_casecmp(const void *k, const void *e) 7301 { 7302 return (strcasecmp(k, ((const struct keywords *)e)->k_name)); 7303 } 7304 7305 int 7306 map_tos(char *s, int *val) 7307 { 7308 /* DiffServ Codepoints and other TOS mappings */ 7309 const struct keywords toswords[] = { 7310 { "af11", IPTOS_DSCP_AF11 }, 7311 { "af12", IPTOS_DSCP_AF12 }, 7312 { "af13", IPTOS_DSCP_AF13 }, 7313 { "af21", IPTOS_DSCP_AF21 }, 7314 { "af22", IPTOS_DSCP_AF22 }, 7315 { "af23", IPTOS_DSCP_AF23 }, 7316 { "af31", IPTOS_DSCP_AF31 }, 7317 { "af32", IPTOS_DSCP_AF32 }, 7318 { "af33", IPTOS_DSCP_AF33 }, 7319 { "af41", IPTOS_DSCP_AF41 }, 7320 { "af42", IPTOS_DSCP_AF42 }, 7321 { "af43", IPTOS_DSCP_AF43 }, 7322 { "critical", IPTOS_PREC_CRITIC_ECP }, 7323 { "cs0", IPTOS_DSCP_CS0 }, 7324 { "cs1", IPTOS_DSCP_CS1 }, 7325 { "cs2", IPTOS_DSCP_CS2 }, 7326 { "cs3", IPTOS_DSCP_CS3 }, 7327 { "cs4", IPTOS_DSCP_CS4 }, 7328 { "cs5", IPTOS_DSCP_CS5 }, 7329 { "cs6", IPTOS_DSCP_CS6 }, 7330 { "cs7", IPTOS_DSCP_CS7 }, 7331 { "ef", IPTOS_DSCP_EF }, 7332 { "inetcontrol", IPTOS_PREC_INTERNETCONTROL }, 7333 { "lowdelay", IPTOS_LOWDELAY }, 7334 { "netcontrol", IPTOS_PREC_NETCONTROL }, 7335 { "reliability", IPTOS_RELIABILITY }, 7336 { "throughput", IPTOS_THROUGHPUT }, 7337 { "va", IPTOS_DSCP_VA } 7338 }; 7339 const struct keywords *p; 7340 7341 p = bsearch(s, toswords, sizeof(toswords)/sizeof(toswords[0]), 7342 sizeof(toswords[0]), kw_casecmp); 7343 7344 if (p) { 7345 *val = p->k_val; 7346 return (1); 7347 } 7348 return (0); 7349 } 7350 7351 int 7352 rt_tableid_max(void) 7353 { 7354 #ifdef __FreeBSD__ 7355 int fibs; 7356 size_t l = sizeof(fibs); 7357 7358 if (sysctlbyname("net.fibs", &fibs, &l, NULL, 0) == -1) 7359 fibs = 16; /* XXX RT_MAXFIBS, at least limit it some. */ 7360 /* 7361 * As the OpenBSD code only compares > and not >= we need to adjust 7362 * here given we only accept values of 0..n and want to avoid #ifdefs 7363 * in the grammar. 7364 */ 7365 return (fibs - 1); 7366 #else 7367 return (RT_TABLEID_MAX); 7368 #endif 7369 } 7370 7371 struct node_mac* 7372 node_mac_from_string(const char *str) 7373 { 7374 struct node_mac *m; 7375 7376 m = calloc(1, sizeof(struct node_mac)); 7377 if (m == NULL) 7378 err(1, "mac: calloc"); 7379 7380 if (sscanf(str, "%02hhx:%02hhx:%02hhx:%02hhx:%02hhx:%02hhx", 7381 &m->mac[0], &m->mac[1], &m->mac[2], &m->mac[3], &m->mac[4], 7382 &m->mac[5]) != 6) { 7383 free(m); 7384 yyerror("invalid MAC address"); 7385 return (NULL); 7386 } 7387 7388 memset(m->mask, 0xff, ETHER_ADDR_LEN); 7389 m->isset = true; 7390 m->next = NULL; 7391 m->tail = m; 7392 7393 return (m); 7394 } 7395 7396 struct node_mac* 7397 node_mac_from_string_masklen(const char *str, int masklen) 7398 { 7399 struct node_mac *m; 7400 7401 if (masklen < 0 || masklen > (ETHER_ADDR_LEN * 8)) { 7402 yyerror("invalid MAC mask length"); 7403 return (NULL); 7404 } 7405 7406 m = node_mac_from_string(str); 7407 if (m == NULL) 7408 return (NULL); 7409 7410 memset(m->mask, 0, ETHER_ADDR_LEN); 7411 for (int i = 0; i < masklen; i++) 7412 m->mask[i / 8] |= 1 << (i % 8); 7413 7414 return (m); 7415 } 7416 7417 struct node_mac* 7418 node_mac_from_string_mask(const char *str, const char *mask) 7419 { 7420 struct node_mac *m; 7421 7422 m = node_mac_from_string(str); 7423 if (m == NULL) 7424 return (NULL); 7425 7426 if (sscanf(mask, "%02hhx:%02hhx:%02hhx:%02hhx:%02hhx:%02hhx", 7427 &m->mask[0], &m->mask[1], &m->mask[2], &m->mask[3], &m->mask[4], 7428 &m->mask[5]) != 6) { 7429 free(m); 7430 yyerror("invalid MAC mask"); 7431 return (NULL); 7432 } 7433 7434 return (m); 7435 } 7436