1 /* $OpenBSD: parse.y,v 1.554 2008/10/17 12:59:53 henning Exp $ */ 2 3 /*- 4 * SPDX-License-Identifier: BSD-2-Clause 5 * 6 * Copyright (c) 2001 Markus Friedl. All rights reserved. 7 * Copyright (c) 2001 Daniel Hartmeier. All rights reserved. 8 * Copyright (c) 2001 Theo de Raadt. All rights reserved. 9 * Copyright (c) 2002,2003 Henning Brauer. All rights reserved. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 21 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 22 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 23 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 24 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 25 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 26 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 27 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 28 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 29 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 30 */ 31 %{ 32 #include <sys/cdefs.h> 33 #define PFIOC_USE_LATEST 34 35 #include <sys/types.h> 36 #include <sys/socket.h> 37 #include <sys/stat.h> 38 #ifdef __FreeBSD__ 39 #include <sys/sysctl.h> 40 #endif 41 #include <net/if.h> 42 #include <netinet/in.h> 43 #include <netinet/in_systm.h> 44 #include <netinet/ip.h> 45 #include <netinet/ip_icmp.h> 46 #include <netinet/icmp6.h> 47 #include <net/pfvar.h> 48 #include <arpa/inet.h> 49 #include <net/altq/altq.h> 50 #include <net/altq/altq_cbq.h> 51 #include <net/altq/altq_codel.h> 52 #include <net/altq/altq_priq.h> 53 #include <net/altq/altq_hfsc.h> 54 #include <net/altq/altq_fairq.h> 55 56 #include <assert.h> 57 #include <stdio.h> 58 #include <unistd.h> 59 #include <stdlib.h> 60 #include <netdb.h> 61 #include <stdarg.h> 62 #include <errno.h> 63 #include <string.h> 64 #include <ctype.h> 65 #include <math.h> 66 #include <err.h> 67 #include <limits.h> 68 #include <pwd.h> 69 #include <grp.h> 70 #include <md5.h> 71 72 #include "pfctl_parser.h" 73 #include "pfctl.h" 74 75 static struct pfctl *pf = NULL; 76 static int debug = 0; 77 static int rulestate = 0; 78 static u_int16_t returnicmpdefault = 79 (ICMP_UNREACH << 8) | ICMP_UNREACH_PORT; 80 static u_int16_t returnicmp6default = 81 (ICMP6_DST_UNREACH << 8) | ICMP6_DST_UNREACH_NOPORT; 82 static int blockpolicy = PFRULE_DROP; 83 static int failpolicy = PFRULE_DROP; 84 static int require_order = 1; 85 static int default_statelock; 86 87 static TAILQ_HEAD(files, file) files = TAILQ_HEAD_INITIALIZER(files); 88 static struct file { 89 TAILQ_ENTRY(file) entry; 90 FILE *stream; 91 char *name; 92 int lineno; 93 int errors; 94 } *file; 95 struct file *pushfile(const char *, int); 96 int popfile(void); 97 int check_file_secrecy(int, const char *); 98 int yyparse(void); 99 int yylex(void); 100 int yyerror(const char *, ...); 101 int kw_cmp(const void *, const void *); 102 int lookup(char *); 103 int lgetc(int); 104 int lungetc(int); 105 int findeol(void); 106 107 static TAILQ_HEAD(symhead, sym) symhead = TAILQ_HEAD_INITIALIZER(symhead); 108 struct sym { 109 TAILQ_ENTRY(sym) entry; 110 int used; 111 int persist; 112 char *nam; 113 char *val; 114 }; 115 int symset(const char *, const char *, int); 116 char *symget(const char *); 117 118 int atoul(char *, u_long *); 119 120 enum { 121 PFCTL_STATE_NONE, 122 PFCTL_STATE_OPTION, 123 PFCTL_STATE_ETHER, 124 PFCTL_STATE_SCRUB, 125 PFCTL_STATE_QUEUE, 126 PFCTL_STATE_NAT, 127 PFCTL_STATE_FILTER 128 }; 129 130 struct node_etherproto { 131 u_int16_t proto; 132 struct node_etherproto *next; 133 struct node_etherproto *tail; 134 }; 135 136 struct node_proto { 137 u_int8_t proto; 138 struct node_proto *next; 139 struct node_proto *tail; 140 }; 141 142 struct node_port { 143 u_int16_t port[2]; 144 u_int8_t op; 145 struct node_port *next; 146 struct node_port *tail; 147 }; 148 149 struct node_uid { 150 uid_t uid[2]; 151 u_int8_t op; 152 struct node_uid *next; 153 struct node_uid *tail; 154 }; 155 156 struct node_gid { 157 gid_t gid[2]; 158 u_int8_t op; 159 struct node_gid *next; 160 struct node_gid *tail; 161 }; 162 163 struct node_icmp { 164 u_int8_t code; 165 u_int8_t type; 166 u_int8_t proto; 167 struct node_icmp *next; 168 struct node_icmp *tail; 169 }; 170 171 enum { PF_STATE_OPT_MAX, PF_STATE_OPT_NOSYNC, PF_STATE_OPT_SRCTRACK, 172 PF_STATE_OPT_MAX_SRC_STATES, PF_STATE_OPT_MAX_SRC_CONN, 173 PF_STATE_OPT_MAX_SRC_CONN_RATE, PF_STATE_OPT_MAX_SRC_NODES, 174 PF_STATE_OPT_OVERLOAD, PF_STATE_OPT_STATELOCK, 175 PF_STATE_OPT_TIMEOUT, PF_STATE_OPT_SLOPPY, 176 PF_STATE_OPT_PFLOW }; 177 178 enum { PF_SRCTRACK_NONE, PF_SRCTRACK, PF_SRCTRACK_GLOBAL, PF_SRCTRACK_RULE }; 179 180 struct node_state_opt { 181 int type; 182 union { 183 u_int32_t max_states; 184 u_int32_t max_src_states; 185 u_int32_t max_src_conn; 186 struct { 187 u_int32_t limit; 188 u_int32_t seconds; 189 } max_src_conn_rate; 190 struct { 191 u_int8_t flush; 192 char tblname[PF_TABLE_NAME_SIZE]; 193 } overload; 194 u_int32_t max_src_nodes; 195 u_int8_t src_track; 196 u_int32_t statelock; 197 struct { 198 int number; 199 u_int32_t seconds; 200 } timeout; 201 } data; 202 struct node_state_opt *next; 203 struct node_state_opt *tail; 204 }; 205 206 struct peer { 207 struct node_host *host; 208 struct node_port *port; 209 }; 210 211 static struct node_queue { 212 char queue[PF_QNAME_SIZE]; 213 char parent[PF_QNAME_SIZE]; 214 char ifname[IFNAMSIZ]; 215 int scheduler; 216 struct node_queue *next; 217 struct node_queue *tail; 218 } *queues = NULL; 219 220 struct node_qassign { 221 char *qname; 222 char *pqname; 223 }; 224 225 static struct filter_opts { 226 int marker; 227 #define FOM_FLAGS 0x0001 228 #define FOM_ICMP 0x0002 229 #define FOM_TOS 0x0004 230 #define FOM_KEEP 0x0008 231 #define FOM_SRCTRACK 0x0010 232 #define FOM_MINTTL 0x0020 233 #define FOM_MAXMSS 0x0040 234 #define FOM_AFTO 0x0080 /* not yet implemmented */ 235 #define FOM_SETTOS 0x0100 236 #define FOM_SCRUB_TCP 0x0200 237 #define FOM_SETPRIO 0x0400 238 #define FOM_ONCE 0x1000 /* not yet implemmented */ 239 #define FOM_PRIO 0x2000 240 #define FOM_SETDELAY 0x4000 241 #define FOM_FRAGCACHE 0x8000 /* does not exist in OpenBSD */ 242 struct node_uid *uid; 243 struct node_gid *gid; 244 struct { 245 u_int8_t b1; 246 u_int8_t b2; 247 u_int16_t w; 248 u_int16_t w2; 249 } flags; 250 struct node_icmp *icmpspec; 251 u_int32_t tos; 252 u_int32_t prob; 253 u_int32_t ridentifier; 254 struct { 255 int action; 256 struct node_state_opt *options; 257 } keep; 258 int fragment; 259 int allowopts; 260 char *label[PF_RULE_MAX_LABEL_COUNT]; 261 int labelcount; 262 struct node_qassign queues; 263 char *tag; 264 char *match_tag; 265 u_int8_t match_tag_not; 266 u_int16_t dnpipe; 267 u_int16_t dnrpipe; 268 u_int32_t free_flags; 269 u_int rtableid; 270 u_int8_t prio; 271 u_int8_t set_prio[2]; 272 struct { 273 struct node_host *addr; 274 u_int16_t port; 275 } divert; 276 /* new-style scrub opts */ 277 int nodf; 278 int minttl; 279 int settos; 280 int randomid; 281 int max_mss; 282 } filter_opts; 283 284 static struct antispoof_opts { 285 char *label[PF_RULE_MAX_LABEL_COUNT]; 286 int labelcount; 287 u_int32_t ridentifier; 288 u_int rtableid; 289 } antispoof_opts; 290 291 static struct scrub_opts { 292 int marker; 293 int nodf; 294 int minttl; 295 int maxmss; 296 int settos; 297 int fragcache; 298 int randomid; 299 int reassemble_tcp; 300 char *match_tag; 301 u_int8_t match_tag_not; 302 u_int rtableid; 303 } scrub_opts; 304 305 static struct queue_opts { 306 int marker; 307 #define QOM_BWSPEC 0x01 308 #define QOM_SCHEDULER 0x02 309 #define QOM_PRIORITY 0x04 310 #define QOM_TBRSIZE 0x08 311 #define QOM_QLIMIT 0x10 312 struct node_queue_bw queue_bwspec; 313 struct node_queue_opt scheduler; 314 int priority; 315 unsigned int tbrsize; 316 int qlimit; 317 } queue_opts; 318 319 static struct table_opts { 320 int flags; 321 int init_addr; 322 struct node_tinithead init_nodes; 323 } table_opts; 324 325 static struct pool_opts { 326 int marker; 327 #define POM_TYPE 0x01 328 #define POM_STICKYADDRESS 0x02 329 #define POM_ENDPI 0x04 330 u_int8_t opts; 331 int type; 332 int staticport; 333 struct pf_poolhashkey *key; 334 struct pf_mape_portset mape; 335 336 } pool_opts; 337 338 static struct codel_opts codel_opts; 339 static struct node_hfsc_opts hfsc_opts; 340 static struct node_fairq_opts fairq_opts; 341 static struct node_state_opt *keep_state_defaults = NULL; 342 static struct pfctl_watermarks syncookie_opts; 343 344 int disallow_table(struct node_host *, const char *); 345 int disallow_urpf_failed(struct node_host *, const char *); 346 int disallow_alias(struct node_host *, const char *); 347 int rule_consistent(struct pfctl_rule *, int); 348 int filter_consistent(struct pfctl_rule *, int); 349 int nat_consistent(struct pfctl_rule *); 350 int rdr_consistent(struct pfctl_rule *); 351 int process_tabledef(char *, struct table_opts *); 352 void expand_label_str(char *, size_t, const char *, const char *); 353 void expand_label_if(const char *, char *, size_t, const char *); 354 void expand_label_addr(const char *, char *, size_t, sa_family_t, 355 struct pf_rule_addr *); 356 void expand_label_port(const char *, char *, size_t, 357 struct pf_rule_addr *); 358 void expand_label_proto(const char *, char *, size_t, u_int8_t); 359 void expand_label_nr(const char *, char *, size_t, 360 struct pfctl_rule *); 361 void expand_eth_rule(struct pfctl_eth_rule *, 362 struct node_if *, struct node_etherproto *, 363 struct node_mac *, struct node_mac *, 364 struct node_host *, struct node_host *, const char *, 365 const char *); 366 void expand_rule(struct pfctl_rule *, struct node_if *, 367 struct node_host *, struct node_proto *, struct node_os *, 368 struct node_host *, struct node_port *, struct node_host *, 369 struct node_port *, struct node_uid *, struct node_gid *, 370 struct node_icmp *, const char *); 371 int expand_altq(struct pf_altq *, struct node_if *, 372 struct node_queue *, struct node_queue_bw bwspec, 373 struct node_queue_opt *); 374 int expand_queue(struct pf_altq *, struct node_if *, 375 struct node_queue *, struct node_queue_bw, 376 struct node_queue_opt *); 377 int expand_skip_interface(struct node_if *); 378 379 int check_rulestate(int); 380 int getservice(char *); 381 int rule_label(struct pfctl_rule *, char *s[PF_RULE_MAX_LABEL_COUNT]); 382 int eth_rule_label(struct pfctl_eth_rule *, char *s[PF_RULE_MAX_LABEL_COUNT]); 383 int rt_tableid_max(void); 384 385 void mv_rules(struct pfctl_ruleset *, struct pfctl_ruleset *); 386 void mv_eth_rules(struct pfctl_eth_ruleset *, struct pfctl_eth_ruleset *); 387 void decide_address_family(struct node_host *, sa_family_t *); 388 void remove_invalid_hosts(struct node_host **, sa_family_t *); 389 int invalid_redirect(struct node_host *, sa_family_t); 390 u_int16_t parseicmpspec(char *, sa_family_t); 391 int kw_casecmp(const void *, const void *); 392 int map_tos(char *string, int *); 393 struct node_mac* node_mac_from_string(const char *); 394 struct node_mac* node_mac_from_string_masklen(const char *, int); 395 struct node_mac* node_mac_from_string_mask(const char *, const char *); 396 397 static TAILQ_HEAD(loadanchorshead, loadanchors) 398 loadanchorshead = TAILQ_HEAD_INITIALIZER(loadanchorshead); 399 400 struct loadanchors { 401 TAILQ_ENTRY(loadanchors) entries; 402 char *anchorname; 403 char *filename; 404 }; 405 406 typedef struct { 407 union { 408 int64_t number; 409 double probability; 410 int i; 411 char *string; 412 u_int rtableid; 413 struct { 414 u_int8_t b1; 415 u_int8_t b2; 416 u_int16_t w; 417 u_int16_t w2; 418 } b; 419 struct range { 420 int a; 421 int b; 422 int t; 423 } range; 424 struct node_if *interface; 425 struct node_proto *proto; 426 struct node_etherproto *etherproto; 427 struct node_icmp *icmp; 428 struct node_host *host; 429 struct node_os *os; 430 struct node_port *port; 431 struct node_uid *uid; 432 struct node_gid *gid; 433 struct node_state_opt *state_opt; 434 struct peer peer; 435 struct { 436 struct peer src, dst; 437 struct node_os *src_os; 438 } fromto; 439 struct { 440 struct node_mac *src; 441 struct node_mac *dst; 442 } etherfromto; 443 struct node_mac *mac; 444 struct { 445 struct node_mac *mac; 446 } etheraddr; 447 char *bridge_to; 448 struct { 449 struct node_host *host; 450 u_int8_t rt; 451 u_int8_t pool_opts; 452 sa_family_t af; 453 struct pf_poolhashkey *key; 454 } route; 455 struct redirection { 456 struct node_host *host; 457 struct range rport; 458 } *redirection; 459 struct { 460 int action; 461 struct node_state_opt *options; 462 } keep_state; 463 struct { 464 u_int8_t log; 465 u_int8_t logif; 466 u_int8_t quick; 467 } logquick; 468 struct { 469 int neg; 470 char *name; 471 } tagged; 472 struct pf_poolhashkey *hashkey; 473 struct node_queue *queue; 474 struct node_queue_opt queue_options; 475 struct node_queue_bw queue_bwspec; 476 struct node_qassign qassign; 477 struct filter_opts filter_opts; 478 struct antispoof_opts antispoof_opts; 479 struct queue_opts queue_opts; 480 struct scrub_opts scrub_opts; 481 struct table_opts table_opts; 482 struct pool_opts pool_opts; 483 struct node_hfsc_opts hfsc_opts; 484 struct node_fairq_opts fairq_opts; 485 struct codel_opts codel_opts; 486 struct pfctl_watermarks *watermarks; 487 } v; 488 int lineno; 489 } YYSTYPE; 490 491 #define PPORT_RANGE 1 492 #define PPORT_STAR 2 493 int parseport(char *, struct range *r, int); 494 495 #define DYNIF_MULTIADDR(addr) ((addr).type == PF_ADDR_DYNIFTL && \ 496 (!((addr).iflags & PFI_AFLAG_NOALIAS) || \ 497 !isdigit((addr).v.ifname[strlen((addr).v.ifname)-1]))) 498 499 %} 500 501 %token PASS BLOCK MATCH SCRUB RETURN IN OS OUT LOG QUICK ON FROM TO FLAGS 502 %token RETURNRST RETURNICMP RETURNICMP6 PROTO INET INET6 ALL ANY ICMPTYPE 503 %token ICMP6TYPE CODE KEEP MODULATE STATE PORT RDR NAT BINAT ARROW NODF 504 %token MINTTL ERROR ALLOWOPTS FASTROUTE FILENAME ROUTETO DUPTO REPLYTO NO LABEL 505 %token NOROUTE URPFFAILED FRAGMENT USER GROUP MAXMSS MAXIMUM TTL TOS DROP TABLE 506 %token REASSEMBLE ANCHOR NATANCHOR RDRANCHOR BINATANCHOR 507 %token SET OPTIMIZATION TIMEOUT LIMIT LOGINTERFACE BLOCKPOLICY FAILPOLICY 508 %token RANDOMID REQUIREORDER SYNPROXY FINGERPRINTS NOSYNC DEBUG SKIP HOSTID 509 %token ANTISPOOF FOR INCLUDE KEEPCOUNTERS SYNCOOKIES L3 510 %token ETHER 511 %token BITMASK RANDOM SOURCEHASH ROUNDROBIN STATICPORT PROBABILITY MAPEPORTSET 512 %token ALTQ CBQ CODEL PRIQ HFSC FAIRQ BANDWIDTH TBRSIZE LINKSHARE REALTIME 513 %token UPPERLIMIT QUEUE PRIORITY QLIMIT HOGS BUCKETS RTABLE TARGET INTERVAL 514 %token DNPIPE DNQUEUE RIDENTIFIER 515 %token LOAD RULESET_OPTIMIZATION PRIO 516 %token STICKYADDRESS ENDPI MAXSRCSTATES MAXSRCNODES SOURCETRACK GLOBAL RULE 517 %token MAXSRCCONN MAXSRCCONNRATE OVERLOAD FLUSH SLOPPY PFLOW 518 %token TAGGED TAG IFBOUND FLOATING STATEPOLICY STATEDEFAULTS ROUTE SETTOS 519 %token DIVERTTO DIVERTREPLY BRIDGE_TO 520 %token <v.string> STRING 521 %token <v.number> NUMBER 522 %token <v.i> PORTBINARY 523 %type <v.interface> interface if_list if_item_not if_item 524 %type <v.number> number icmptype icmp6type uid gid 525 %type <v.number> tos not yesno optnodf 526 %type <v.probability> probability 527 %type <v.i> no dir af fragcache optimizer syncookie_val 528 %type <v.i> sourcetrack flush unaryop statelock 529 %type <v.i> etherprotoval 530 %type <v.b> action nataction natpasslog scrubaction 531 %type <v.b> flags flag blockspec prio 532 %type <v.range> portplain portstar portrange 533 %type <v.hashkey> hashkey 534 %type <v.proto> proto proto_list proto_item 535 %type <v.number> protoval 536 %type <v.icmp> icmpspec 537 %type <v.icmp> icmp_list icmp_item 538 %type <v.icmp> icmp6_list icmp6_item 539 %type <v.number> reticmpspec reticmp6spec 540 %type <v.fromto> fromto l3fromto 541 %type <v.peer> ipportspec from to 542 %type <v.host> ipspec toipspec xhost host dynaddr host_list 543 %type <v.host> redir_host_list redirspec 544 %type <v.host> route_host route_host_list routespec 545 %type <v.os> os xos os_list 546 %type <v.port> portspec port_list port_item 547 %type <v.uid> uids uid_list uid_item 548 %type <v.gid> gids gid_list gid_item 549 %type <v.route> route 550 %type <v.redirection> redirection redirpool 551 %type <v.string> label stringall tag anchorname 552 %type <v.string> string varstring numberstring 553 %type <v.keep_state> keep 554 %type <v.state_opt> state_opt_spec state_opt_list state_opt_item 555 %type <v.logquick> logquick quick log logopts logopt 556 %type <v.interface> antispoof_ifspc antispoof_iflst antispoof_if 557 %type <v.qassign> qname etherqname 558 %type <v.queue> qassign qassign_list qassign_item 559 %type <v.queue_options> scheduler 560 %type <v.number> cbqflags_list cbqflags_item 561 %type <v.number> priqflags_list priqflags_item 562 %type <v.hfsc_opts> hfscopts_list hfscopts_item hfsc_opts 563 %type <v.fairq_opts> fairqopts_list fairqopts_item fairq_opts 564 %type <v.codel_opts> codelopts_list codelopts_item codel_opts 565 %type <v.queue_bwspec> bandwidth 566 %type <v.filter_opts> filter_opts filter_opt filter_opts_l etherfilter_opts etherfilter_opt etherfilter_opts_l 567 %type <v.filter_opts> filter_sets filter_set filter_sets_l 568 %type <v.antispoof_opts> antispoof_opts antispoof_opt antispoof_opts_l 569 %type <v.queue_opts> queue_opts queue_opt queue_opts_l 570 %type <v.scrub_opts> scrub_opts scrub_opt scrub_opts_l 571 %type <v.table_opts> table_opts table_opt table_opts_l 572 %type <v.pool_opts> pool_opts pool_opt pool_opts_l 573 %type <v.tagged> tagged 574 %type <v.rtableid> rtable 575 %type <v.watermarks> syncookie_opts 576 %type <v.etherproto> etherproto etherproto_list etherproto_item 577 %type <v.etherfromto> etherfromto 578 %type <v.etheraddr> etherfrom etherto 579 %type <v.bridge_to> bridge 580 %type <v.mac> xmac mac mac_list macspec 581 %% 582 583 ruleset : /* empty */ 584 | ruleset include '\n' 585 | ruleset '\n' 586 | ruleset option '\n' 587 | ruleset etherrule '\n' 588 | ruleset etheranchorrule '\n' 589 | ruleset scrubrule '\n' 590 | ruleset natrule '\n' 591 | ruleset binatrule '\n' 592 | ruleset pfrule '\n' 593 | ruleset anchorrule '\n' 594 | ruleset loadrule '\n' 595 | ruleset altqif '\n' 596 | ruleset queuespec '\n' 597 | ruleset varset '\n' 598 | ruleset antispoof '\n' 599 | ruleset tabledef '\n' 600 | '{' fakeanchor '}' '\n'; 601 | ruleset error '\n' { file->errors++; } 602 ; 603 604 include : INCLUDE STRING { 605 struct file *nfile; 606 607 if ((nfile = pushfile($2, 0)) == NULL) { 608 yyerror("failed to include file %s", $2); 609 free($2); 610 YYERROR; 611 } 612 free($2); 613 614 file = nfile; 615 lungetc('\n'); 616 } 617 ; 618 619 /* 620 * apply to previouslys specified rule: must be careful to note 621 * what that is: pf or nat or binat or rdr 622 */ 623 fakeanchor : fakeanchor '\n' 624 | fakeanchor anchorrule '\n' 625 | fakeanchor binatrule '\n' 626 | fakeanchor natrule '\n' 627 | fakeanchor pfrule '\n' 628 | fakeanchor error '\n' 629 ; 630 631 optimizer : string { 632 if (!strcmp($1, "none")) 633 $$ = 0; 634 else if (!strcmp($1, "basic")) 635 $$ = PF_OPTIMIZE_BASIC; 636 else if (!strcmp($1, "profile")) 637 $$ = PF_OPTIMIZE_BASIC | PF_OPTIMIZE_PROFILE; 638 else { 639 yyerror("unknown ruleset-optimization %s", $1); 640 YYERROR; 641 } 642 } 643 ; 644 645 optnodf : /* empty */ { $$ = 0; } 646 | NODF { $$ = 1; } 647 ; 648 649 option : SET REASSEMBLE yesno optnodf { 650 if (check_rulestate(PFCTL_STATE_OPTION)) 651 YYERROR; 652 pfctl_set_reassembly(pf, $3, $4); 653 } 654 | SET OPTIMIZATION STRING { 655 if (check_rulestate(PFCTL_STATE_OPTION)) { 656 free($3); 657 YYERROR; 658 } 659 if (pfctl_set_optimization(pf, $3) != 0) { 660 yyerror("unknown optimization %s", $3); 661 free($3); 662 YYERROR; 663 } 664 free($3); 665 } 666 | SET RULESET_OPTIMIZATION optimizer { 667 if (!(pf->opts & PF_OPT_OPTIMIZE)) { 668 pf->opts |= PF_OPT_OPTIMIZE; 669 pf->optimize = $3; 670 } 671 } 672 | SET TIMEOUT timeout_spec 673 | SET TIMEOUT '{' optnl timeout_list '}' 674 | SET LIMIT limit_spec 675 | SET LIMIT '{' optnl limit_list '}' 676 | SET LOGINTERFACE stringall { 677 if (check_rulestate(PFCTL_STATE_OPTION)) { 678 free($3); 679 YYERROR; 680 } 681 if (pfctl_set_logif(pf, $3) != 0) { 682 yyerror("error setting loginterface %s", $3); 683 free($3); 684 YYERROR; 685 } 686 free($3); 687 } 688 | SET HOSTID number { 689 if ($3 == 0 || $3 > UINT_MAX) { 690 yyerror("hostid must be non-zero"); 691 YYERROR; 692 } 693 if (pfctl_set_hostid(pf, $3) != 0) { 694 yyerror("error setting hostid %08x", $3); 695 YYERROR; 696 } 697 } 698 | SET BLOCKPOLICY DROP { 699 if (pf->opts & PF_OPT_VERBOSE) 700 printf("set block-policy drop\n"); 701 if (check_rulestate(PFCTL_STATE_OPTION)) 702 YYERROR; 703 blockpolicy = PFRULE_DROP; 704 } 705 | SET BLOCKPOLICY RETURN { 706 if (pf->opts & PF_OPT_VERBOSE) 707 printf("set block-policy return\n"); 708 if (check_rulestate(PFCTL_STATE_OPTION)) 709 YYERROR; 710 blockpolicy = PFRULE_RETURN; 711 } 712 | SET FAILPOLICY DROP { 713 if (pf->opts & PF_OPT_VERBOSE) 714 printf("set fail-policy drop\n"); 715 if (check_rulestate(PFCTL_STATE_OPTION)) 716 YYERROR; 717 failpolicy = PFRULE_DROP; 718 } 719 | SET FAILPOLICY RETURN { 720 if (pf->opts & PF_OPT_VERBOSE) 721 printf("set fail-policy return\n"); 722 if (check_rulestate(PFCTL_STATE_OPTION)) 723 YYERROR; 724 failpolicy = PFRULE_RETURN; 725 } 726 | SET REQUIREORDER yesno { 727 if (pf->opts & PF_OPT_VERBOSE) 728 printf("set require-order %s\n", 729 $3 == 1 ? "yes" : "no"); 730 require_order = $3; 731 } 732 | SET FINGERPRINTS STRING { 733 if (pf->opts & PF_OPT_VERBOSE) 734 printf("set fingerprints \"%s\"\n", $3); 735 if (check_rulestate(PFCTL_STATE_OPTION)) { 736 free($3); 737 YYERROR; 738 } 739 if (!pf->anchor->name[0]) { 740 if (pfctl_file_fingerprints(pf->dev, 741 pf->opts, $3)) { 742 yyerror("error loading " 743 "fingerprints %s", $3); 744 free($3); 745 YYERROR; 746 } 747 } 748 free($3); 749 } 750 | SET STATEPOLICY statelock { 751 if (pf->opts & PF_OPT_VERBOSE) 752 switch ($3) { 753 case 0: 754 printf("set state-policy floating\n"); 755 break; 756 case PFRULE_IFBOUND: 757 printf("set state-policy if-bound\n"); 758 break; 759 } 760 default_statelock = $3; 761 } 762 | SET DEBUG STRING { 763 if (check_rulestate(PFCTL_STATE_OPTION)) { 764 free($3); 765 YYERROR; 766 } 767 if (pfctl_do_set_debug(pf, $3) != 0) { 768 yyerror("error setting debuglevel %s", $3); 769 free($3); 770 YYERROR; 771 } 772 free($3); 773 } 774 | SET SKIP interface { 775 if (expand_skip_interface($3) != 0) { 776 yyerror("error setting skip interface(s)"); 777 YYERROR; 778 } 779 } 780 | SET STATEDEFAULTS state_opt_list { 781 if (keep_state_defaults != NULL) { 782 yyerror("cannot redefine state-defaults"); 783 YYERROR; 784 } 785 keep_state_defaults = $3; 786 } 787 | SET KEEPCOUNTERS { 788 pf->keep_counters = true; 789 } 790 | SET SYNCOOKIES syncookie_val syncookie_opts { 791 if (pfctl_cfg_syncookies(pf, $3, $4)) { 792 yyerror("error setting syncookies"); 793 YYERROR; 794 } 795 } 796 ; 797 798 syncookie_val : STRING { 799 if (!strcmp($1, "never")) 800 $$ = PFCTL_SYNCOOKIES_NEVER; 801 else if (!strcmp($1, "adaptive")) 802 $$ = PFCTL_SYNCOOKIES_ADAPTIVE; 803 else if (!strcmp($1, "always")) 804 $$ = PFCTL_SYNCOOKIES_ALWAYS; 805 else { 806 yyerror("illegal value for syncookies"); 807 YYERROR; 808 } 809 } 810 ; 811 syncookie_opts : /* empty */ { $$ = NULL; } 812 | { 813 memset(&syncookie_opts, 0, sizeof(syncookie_opts)); 814 } '(' syncookie_opt_l ')' { $$ = &syncookie_opts; } 815 ; 816 817 syncookie_opt_l : syncookie_opt_l comma syncookie_opt 818 | syncookie_opt 819 ; 820 821 syncookie_opt : STRING STRING { 822 double val; 823 char *cp; 824 825 val = strtod($2, &cp); 826 if (cp == NULL || strcmp(cp, "%")) 827 YYERROR; 828 if (val <= 0 || val > 100) { 829 yyerror("illegal percentage value"); 830 YYERROR; 831 } 832 if (!strcmp($1, "start")) { 833 syncookie_opts.hi = val; 834 } else if (!strcmp($1, "end")) { 835 syncookie_opts.lo = val; 836 } else { 837 yyerror("illegal syncookie option"); 838 YYERROR; 839 } 840 } 841 ; 842 843 stringall : STRING { $$ = $1; } 844 | ALL { 845 if (($$ = strdup("all")) == NULL) { 846 err(1, "stringall: strdup"); 847 } 848 } 849 ; 850 851 string : STRING string { 852 if (asprintf(&$$, "%s %s", $1, $2) == -1) 853 err(1, "string: asprintf"); 854 free($1); 855 free($2); 856 } 857 | STRING 858 ; 859 860 varstring : numberstring varstring { 861 if (asprintf(&$$, "%s %s", $1, $2) == -1) 862 err(1, "string: asprintf"); 863 free($1); 864 free($2); 865 } 866 | numberstring 867 ; 868 869 numberstring : NUMBER { 870 char *s; 871 if (asprintf(&s, "%lld", (long long)$1) == -1) { 872 yyerror("string: asprintf"); 873 YYERROR; 874 } 875 $$ = s; 876 } 877 | STRING 878 ; 879 880 varset : STRING '=' varstring { 881 char *s = $1; 882 if (pf->opts & PF_OPT_VERBOSE) 883 printf("%s = \"%s\"\n", $1, $3); 884 while (*s++) { 885 if (isspace((unsigned char)*s)) { 886 yyerror("macro name cannot contain " 887 "whitespace"); 888 YYERROR; 889 } 890 } 891 if (symset($1, $3, 0) == -1) 892 err(1, "cannot store variable %s", $1); 893 free($1); 894 free($3); 895 } 896 ; 897 898 anchorname : STRING { $$ = $1; } 899 | /* empty */ { $$ = NULL; } 900 ; 901 902 pfa_anchorlist : /* empty */ 903 | pfa_anchorlist '\n' 904 | pfa_anchorlist pfrule '\n' 905 | pfa_anchorlist anchorrule '\n' 906 ; 907 908 pfa_anchor : '{' 909 { 910 char ta[PF_ANCHOR_NAME_SIZE]; 911 struct pfctl_ruleset *rs; 912 913 /* stepping into a brace anchor */ 914 pf->asd++; 915 pf->bn++; 916 917 /* 918 * Anchor contents are parsed before the anchor rule 919 * production completes, so we don't know the real 920 * location yet. Create a holding ruleset in the root; 921 * contents will be moved afterwards. 922 */ 923 snprintf(ta, PF_ANCHOR_NAME_SIZE, "_%d", pf->bn); 924 rs = pf_find_or_create_ruleset(ta); 925 if (rs == NULL) 926 err(1, "pfa_anchor: pf_find_or_create_ruleset"); 927 pf->astack[pf->asd] = rs->anchor; 928 pf->anchor = rs->anchor; 929 } '\n' pfa_anchorlist '}' 930 { 931 pf->alast = pf->anchor; 932 pf->asd--; 933 pf->anchor = pf->astack[pf->asd]; 934 } 935 | /* empty */ 936 ; 937 938 anchorrule : ANCHOR anchorname dir quick interface af proto fromto 939 filter_opts pfa_anchor 940 { 941 struct pfctl_rule r; 942 struct node_proto *proto; 943 944 if (check_rulestate(PFCTL_STATE_FILTER)) { 945 if ($2) 946 free($2); 947 YYERROR; 948 } 949 950 if ($2 && ($2[0] == '_' || strstr($2, "/_") != NULL)) { 951 free($2); 952 yyerror("anchor names beginning with '_' " 953 "are reserved for internal use"); 954 YYERROR; 955 } 956 957 memset(&r, 0, sizeof(r)); 958 if (pf->astack[pf->asd + 1]) { 959 if ($2 && strchr($2, '/') != NULL) { 960 free($2); 961 yyerror("anchor paths containing '/' " 962 "cannot be used for inline anchors."); 963 YYERROR; 964 } 965 966 /* Move inline rules into relative location. */ 967 pfctl_anchor_setup(&r, 968 &pf->astack[pf->asd]->ruleset, 969 $2 ? $2 : pf->alast->name); 970 971 if (r.anchor == NULL) 972 err(1, "anchorrule: unable to " 973 "create ruleset"); 974 975 if (pf->alast != r.anchor) { 976 if (r.anchor->match) { 977 yyerror("inline anchor '%s' " 978 "already exists", 979 r.anchor->name); 980 YYERROR; 981 } 982 mv_rules(&pf->alast->ruleset, 983 &r.anchor->ruleset); 984 } 985 pf_remove_if_empty_ruleset(&pf->alast->ruleset); 986 pf->alast = r.anchor; 987 } else { 988 if (!$2) { 989 yyerror("anchors without explicit " 990 "rules must specify a name"); 991 YYERROR; 992 } 993 } 994 r.direction = $3; 995 r.quick = $4.quick; 996 r.af = $6; 997 r.prob = $9.prob; 998 r.rtableid = $9.rtableid; 999 r.ridentifier = $9.ridentifier; 1000 1001 if ($9.tag) 1002 if (strlcpy(r.tagname, $9.tag, 1003 PF_TAG_NAME_SIZE) >= PF_TAG_NAME_SIZE) { 1004 yyerror("tag too long, max %u chars", 1005 PF_TAG_NAME_SIZE - 1); 1006 YYERROR; 1007 } 1008 if ($9.match_tag) 1009 if (strlcpy(r.match_tagname, $9.match_tag, 1010 PF_TAG_NAME_SIZE) >= PF_TAG_NAME_SIZE) { 1011 yyerror("tag too long, max %u chars", 1012 PF_TAG_NAME_SIZE - 1); 1013 YYERROR; 1014 } 1015 r.match_tag_not = $9.match_tag_not; 1016 if (rule_label(&r, $9.label)) 1017 YYERROR; 1018 for (int i = 0; i < PF_RULE_MAX_LABEL_COUNT; i++) 1019 free($9.label[i]); 1020 r.flags = $9.flags.b1; 1021 r.flagset = $9.flags.b2; 1022 if (($9.flags.b1 & $9.flags.b2) != $9.flags.b1) { 1023 yyerror("flags always false"); 1024 YYERROR; 1025 } 1026 if ($9.flags.b1 || $9.flags.b2 || $8.src_os) { 1027 for (proto = $7; proto != NULL && 1028 proto->proto != IPPROTO_TCP; 1029 proto = proto->next) 1030 ; /* nothing */ 1031 if (proto == NULL && $7 != NULL) { 1032 if ($9.flags.b1 || $9.flags.b2) 1033 yyerror( 1034 "flags only apply to tcp"); 1035 if ($8.src_os) 1036 yyerror( 1037 "OS fingerprinting only " 1038 "applies to tcp"); 1039 YYERROR; 1040 } 1041 } 1042 1043 r.tos = $9.tos; 1044 1045 if ($9.keep.action) { 1046 yyerror("cannot specify state handling " 1047 "on anchors"); 1048 YYERROR; 1049 } 1050 1051 if ($9.match_tag) 1052 if (strlcpy(r.match_tagname, $9.match_tag, 1053 PF_TAG_NAME_SIZE) >= PF_TAG_NAME_SIZE) { 1054 yyerror("tag too long, max %u chars", 1055 PF_TAG_NAME_SIZE - 1); 1056 YYERROR; 1057 } 1058 r.match_tag_not = $9.match_tag_not; 1059 if ($9.marker & FOM_PRIO) { 1060 if ($9.prio == 0) 1061 r.prio = PF_PRIO_ZERO; 1062 else 1063 r.prio = $9.prio; 1064 } 1065 if ($9.marker & FOM_SETPRIO) { 1066 r.set_prio[0] = $9.set_prio[0]; 1067 r.set_prio[1] = $9.set_prio[1]; 1068 r.scrub_flags |= PFSTATE_SETPRIO; 1069 } 1070 1071 decide_address_family($8.src.host, &r.af); 1072 decide_address_family($8.dst.host, &r.af); 1073 1074 expand_rule(&r, $5, NULL, $7, $8.src_os, 1075 $8.src.host, $8.src.port, $8.dst.host, $8.dst.port, 1076 $9.uid, $9.gid, $9.icmpspec, 1077 pf->astack[pf->asd + 1] ? pf->alast->name : $2); 1078 free($2); 1079 pf->astack[pf->asd + 1] = NULL; 1080 } 1081 | NATANCHOR string interface af proto fromto rtable { 1082 struct pfctl_rule r; 1083 1084 if (check_rulestate(PFCTL_STATE_NAT)) { 1085 free($2); 1086 YYERROR; 1087 } 1088 1089 memset(&r, 0, sizeof(r)); 1090 r.action = PF_NAT; 1091 r.af = $4; 1092 r.rtableid = $7; 1093 1094 decide_address_family($6.src.host, &r.af); 1095 decide_address_family($6.dst.host, &r.af); 1096 1097 expand_rule(&r, $3, NULL, $5, $6.src_os, 1098 $6.src.host, $6.src.port, $6.dst.host, $6.dst.port, 1099 0, 0, 0, $2); 1100 free($2); 1101 } 1102 | RDRANCHOR string interface af proto fromto rtable { 1103 struct pfctl_rule r; 1104 1105 if (check_rulestate(PFCTL_STATE_NAT)) { 1106 free($2); 1107 YYERROR; 1108 } 1109 1110 memset(&r, 0, sizeof(r)); 1111 r.action = PF_RDR; 1112 r.af = $4; 1113 r.rtableid = $7; 1114 1115 decide_address_family($6.src.host, &r.af); 1116 decide_address_family($6.dst.host, &r.af); 1117 1118 if ($6.src.port != NULL) { 1119 yyerror("source port parameter not supported" 1120 " in rdr-anchor"); 1121 YYERROR; 1122 } 1123 if ($6.dst.port != NULL) { 1124 if ($6.dst.port->next != NULL) { 1125 yyerror("destination port list " 1126 "expansion not supported in " 1127 "rdr-anchor"); 1128 YYERROR; 1129 } else if ($6.dst.port->op != PF_OP_EQ) { 1130 yyerror("destination port operators" 1131 " not supported in rdr-anchor"); 1132 YYERROR; 1133 } 1134 r.dst.port[0] = $6.dst.port->port[0]; 1135 r.dst.port[1] = $6.dst.port->port[1]; 1136 r.dst.port_op = $6.dst.port->op; 1137 } 1138 1139 expand_rule(&r, $3, NULL, $5, $6.src_os, 1140 $6.src.host, $6.src.port, $6.dst.host, $6.dst.port, 1141 0, 0, 0, $2); 1142 free($2); 1143 } 1144 | BINATANCHOR string interface af proto fromto rtable { 1145 struct pfctl_rule r; 1146 1147 if (check_rulestate(PFCTL_STATE_NAT)) { 1148 free($2); 1149 YYERROR; 1150 } 1151 1152 memset(&r, 0, sizeof(r)); 1153 r.action = PF_BINAT; 1154 r.af = $4; 1155 r.rtableid = $7; 1156 if ($5 != NULL) { 1157 if ($5->next != NULL) { 1158 yyerror("proto list expansion" 1159 " not supported in binat-anchor"); 1160 YYERROR; 1161 } 1162 r.proto = $5->proto; 1163 free($5); 1164 } 1165 1166 if ($6.src.host != NULL || $6.src.port != NULL || 1167 $6.dst.host != NULL || $6.dst.port != NULL) { 1168 yyerror("fromto parameter not supported" 1169 " in binat-anchor"); 1170 YYERROR; 1171 } 1172 1173 decide_address_family($6.src.host, &r.af); 1174 decide_address_family($6.dst.host, &r.af); 1175 1176 pfctl_append_rule(pf, &r, $2); 1177 free($2); 1178 } 1179 ; 1180 1181 loadrule : LOAD ANCHOR string FROM string { 1182 struct loadanchors *loadanchor; 1183 1184 if (strlen(pf->anchor->name) + 1 + 1185 strlen($3) >= MAXPATHLEN) { 1186 yyerror("anchorname %s too long, max %u\n", 1187 $3, MAXPATHLEN - 1); 1188 free($3); 1189 YYERROR; 1190 } 1191 loadanchor = calloc(1, sizeof(struct loadanchors)); 1192 if (loadanchor == NULL) 1193 err(1, "loadrule: calloc"); 1194 if ((loadanchor->anchorname = malloc(MAXPATHLEN)) == 1195 NULL) 1196 err(1, "loadrule: malloc"); 1197 if (pf->anchor->name[0]) 1198 snprintf(loadanchor->anchorname, MAXPATHLEN, 1199 "%s/%s", pf->anchor->name, $3); 1200 else 1201 strlcpy(loadanchor->anchorname, $3, MAXPATHLEN); 1202 if ((loadanchor->filename = strdup($5)) == NULL) 1203 err(1, "loadrule: strdup"); 1204 1205 TAILQ_INSERT_TAIL(&loadanchorshead, loadanchor, 1206 entries); 1207 1208 free($3); 1209 free($5); 1210 }; 1211 1212 scrubaction : no SCRUB { 1213 $$.b2 = $$.w = 0; 1214 if ($1) 1215 $$.b1 = PF_NOSCRUB; 1216 else 1217 $$.b1 = PF_SCRUB; 1218 } 1219 ; 1220 1221 etherrule : ETHER action dir quick interface bridge etherproto etherfromto l3fromto etherfilter_opts 1222 { 1223 struct pfctl_eth_rule r; 1224 1225 bzero(&r, sizeof(r)); 1226 1227 if (check_rulestate(PFCTL_STATE_ETHER)) 1228 YYERROR; 1229 1230 r.action = $2.b1; 1231 r.direction = $3; 1232 r.quick = $4.quick; 1233 if ($10.tag != NULL) 1234 strlcpy(r.tagname, $10.tag, sizeof(r.tagname)); 1235 if ($10.match_tag) 1236 if (strlcpy(r.match_tagname, $10.match_tag, 1237 PF_TAG_NAME_SIZE) >= PF_TAG_NAME_SIZE) { 1238 yyerror("tag too long, max %u chars", 1239 PF_TAG_NAME_SIZE - 1); 1240 YYERROR; 1241 } 1242 r.match_tag_not = $10.match_tag_not; 1243 if ($10.queues.qname != NULL) 1244 strlcpy(r.qname, $10.queues.qname, sizeof(r.qname)); 1245 r.dnpipe = $10.dnpipe; 1246 r.dnflags = $10.free_flags; 1247 if (eth_rule_label(&r, $10.label)) 1248 YYERROR; 1249 for (int i = 0; i < PF_RULE_MAX_LABEL_COUNT; i++) 1250 free($10.label[i]); 1251 r.ridentifier = $10.ridentifier; 1252 1253 expand_eth_rule(&r, $5, $7, $8.src, $8.dst, 1254 $9.src.host, $9.dst.host, $6, ""); 1255 } 1256 ; 1257 1258 etherpfa_anchorlist : /* empty */ 1259 | etherpfa_anchorlist '\n' 1260 | etherpfa_anchorlist etherrule '\n' 1261 | etherpfa_anchorlist etheranchorrule '\n' 1262 ; 1263 1264 etherpfa_anchor : '{' 1265 { 1266 char ta[PF_ANCHOR_NAME_SIZE]; 1267 struct pfctl_eth_ruleset *rs; 1268 1269 /* steping into a brace anchor */ 1270 pf->asd++; 1271 pf->bn++; 1272 1273 /* create a holding ruleset in the root */ 1274 snprintf(ta, PF_ANCHOR_NAME_SIZE, "_%d", pf->bn); 1275 rs = pf_find_or_create_eth_ruleset(ta); 1276 if (rs == NULL) 1277 err(1, "etherpfa_anchor: pf_find_or_create_eth_ruleset"); 1278 pf->eastack[pf->asd] = rs->anchor; 1279 pf->eanchor = rs->anchor; 1280 } '\n' etherpfa_anchorlist '}' 1281 { 1282 pf->ealast = pf->eanchor; 1283 pf->asd--; 1284 pf->eanchor = pf->eastack[pf->asd]; 1285 } 1286 | /* empty */ 1287 ; 1288 1289 etheranchorrule : ETHER ANCHOR anchorname dir quick interface etherproto etherfromto l3fromto etherpfa_anchor 1290 { 1291 struct pfctl_eth_rule r; 1292 1293 if (check_rulestate(PFCTL_STATE_ETHER)) { 1294 free($3); 1295 YYERROR; 1296 } 1297 1298 if ($3 && ($3[0] == '_' || strstr($3, "/_") != NULL)) { 1299 free($3); 1300 yyerror("anchor names beginning with '_' " 1301 "are reserved for internal use"); 1302 YYERROR; 1303 } 1304 1305 memset(&r, 0, sizeof(r)); 1306 if (pf->eastack[pf->asd + 1]) { 1307 if ($3 && strchr($3, '/') != NULL) { 1308 free($3); 1309 yyerror("anchor paths containing '/' " 1310 "cannot be used for inline anchors."); 1311 YYERROR; 1312 } 1313 1314 /* Move inline rules into relative location. */ 1315 pfctl_eth_anchor_setup(pf, &r, 1316 &pf->eastack[pf->asd]->ruleset, 1317 $3 ? $3 : pf->ealast->name); 1318 if (r.anchor == NULL) 1319 err(1, "etheranchorrule: unable to " 1320 "create ruleset"); 1321 1322 if (pf->ealast != r.anchor) { 1323 if (r.anchor->match) { 1324 yyerror("inline anchor '%s' " 1325 "already exists", 1326 r.anchor->name); 1327 YYERROR; 1328 } 1329 mv_eth_rules(&pf->ealast->ruleset, 1330 &r.anchor->ruleset); 1331 } 1332 pf_remove_if_empty_eth_ruleset(&pf->ealast->ruleset); 1333 pf->ealast = r.anchor; 1334 } else { 1335 if (!$3) { 1336 yyerror("anchors without explicit " 1337 "rules must specify a name"); 1338 YYERROR; 1339 } 1340 } 1341 1342 r.direction = $4; 1343 r.quick = $5.quick; 1344 1345 expand_eth_rule(&r, $6, $7, $8.src, $8.dst, 1346 $9.src.host, $9.dst.host, NULL, 1347 pf->eastack[pf->asd + 1] ? pf->ealast->name : $3); 1348 1349 free($3); 1350 pf->eastack[pf->asd + 1] = NULL; 1351 } 1352 ; 1353 1354 etherfilter_opts : { 1355 bzero(&filter_opts, sizeof filter_opts); 1356 } 1357 etherfilter_opts_l 1358 { $$ = filter_opts; } 1359 | /* empty */ { 1360 bzero(&filter_opts, sizeof filter_opts); 1361 $$ = filter_opts; 1362 } 1363 ; 1364 1365 etherfilter_opts_l : etherfilter_opts_l etherfilter_opt 1366 | etherfilter_opt 1367 1368 etherfilter_opt : etherqname { 1369 if (filter_opts.queues.qname) { 1370 yyerror("queue cannot be redefined"); 1371 YYERROR; 1372 } 1373 filter_opts.queues = $1; 1374 } 1375 | RIDENTIFIER number { 1376 filter_opts.ridentifier = $2; 1377 } 1378 | label { 1379 if (filter_opts.labelcount >= PF_RULE_MAX_LABEL_COUNT) { 1380 yyerror("label can only be used %d times", PF_RULE_MAX_LABEL_COUNT); 1381 YYERROR; 1382 } 1383 filter_opts.label[filter_opts.labelcount++] = $1; 1384 } 1385 | TAG string { 1386 filter_opts.tag = $2; 1387 } 1388 | not TAGGED string { 1389 filter_opts.match_tag = $3; 1390 filter_opts.match_tag_not = $1; 1391 } 1392 | DNPIPE number { 1393 filter_opts.dnpipe = $2; 1394 filter_opts.free_flags |= PFRULE_DN_IS_PIPE; 1395 } 1396 | DNQUEUE number { 1397 filter_opts.dnpipe = $2; 1398 filter_opts.free_flags |= PFRULE_DN_IS_QUEUE; 1399 } 1400 ; 1401 1402 bridge : /* empty */ { 1403 $$ = NULL; 1404 } 1405 | BRIDGE_TO STRING { 1406 $$ = strdup($2); 1407 } 1408 ; 1409 1410 scrubrule : scrubaction dir logquick interface af proto fromto scrub_opts 1411 { 1412 struct pfctl_rule r; 1413 1414 if (check_rulestate(PFCTL_STATE_SCRUB)) 1415 YYERROR; 1416 1417 memset(&r, 0, sizeof(r)); 1418 1419 r.action = $1.b1; 1420 r.direction = $2; 1421 1422 r.log = $3.log; 1423 r.logif = $3.logif; 1424 if ($3.quick) { 1425 yyerror("scrub rules do not support 'quick'"); 1426 YYERROR; 1427 } 1428 1429 r.af = $5; 1430 if ($8.nodf) 1431 r.rule_flag |= PFRULE_NODF; 1432 if ($8.randomid) 1433 r.rule_flag |= PFRULE_RANDOMID; 1434 if ($8.reassemble_tcp) { 1435 if (r.direction != PF_INOUT) { 1436 yyerror("reassemble tcp rules can not " 1437 "specify direction"); 1438 YYERROR; 1439 } 1440 r.rule_flag |= PFRULE_REASSEMBLE_TCP; 1441 } 1442 if ($8.minttl) 1443 r.min_ttl = $8.minttl; 1444 if ($8.maxmss) 1445 r.max_mss = $8.maxmss; 1446 if ($8.marker & FOM_SETTOS) { 1447 r.rule_flag |= PFRULE_SET_TOS; 1448 r.set_tos = $8.settos; 1449 } 1450 if ($8.fragcache) 1451 r.rule_flag |= $8.fragcache; 1452 if ($8.match_tag) 1453 if (strlcpy(r.match_tagname, $8.match_tag, 1454 PF_TAG_NAME_SIZE) >= PF_TAG_NAME_SIZE) { 1455 yyerror("tag too long, max %u chars", 1456 PF_TAG_NAME_SIZE - 1); 1457 YYERROR; 1458 } 1459 r.match_tag_not = $8.match_tag_not; 1460 r.rtableid = $8.rtableid; 1461 1462 expand_rule(&r, $4, NULL, $6, $7.src_os, 1463 $7.src.host, $7.src.port, $7.dst.host, $7.dst.port, 1464 NULL, NULL, NULL, ""); 1465 } 1466 ; 1467 1468 scrub_opts : { 1469 bzero(&scrub_opts, sizeof scrub_opts); 1470 scrub_opts.rtableid = -1; 1471 } 1472 scrub_opts_l 1473 { $$ = scrub_opts; } 1474 | /* empty */ { 1475 bzero(&scrub_opts, sizeof scrub_opts); 1476 scrub_opts.rtableid = -1; 1477 $$ = scrub_opts; 1478 } 1479 ; 1480 1481 scrub_opts_l : scrub_opts_l comma scrub_opt 1482 | scrub_opt 1483 ; 1484 1485 scrub_opt : NODF { 1486 if (scrub_opts.nodf) { 1487 yyerror("no-df cannot be respecified"); 1488 YYERROR; 1489 } 1490 scrub_opts.nodf = 1; 1491 } 1492 | MINTTL NUMBER { 1493 if (scrub_opts.marker & FOM_MINTTL) { 1494 yyerror("min-ttl cannot be respecified"); 1495 YYERROR; 1496 } 1497 if ($2 < 0 || $2 > 255) { 1498 yyerror("illegal min-ttl value %d", $2); 1499 YYERROR; 1500 } 1501 scrub_opts.marker |= FOM_MINTTL; 1502 scrub_opts.minttl = $2; 1503 } 1504 | MAXMSS NUMBER { 1505 if (scrub_opts.marker & FOM_MAXMSS) { 1506 yyerror("max-mss cannot be respecified"); 1507 YYERROR; 1508 } 1509 if ($2 < 0 || $2 > 65535) { 1510 yyerror("illegal max-mss value %d", $2); 1511 YYERROR; 1512 } 1513 scrub_opts.marker |= FOM_MAXMSS; 1514 scrub_opts.maxmss = $2; 1515 } 1516 | SETTOS tos { 1517 if (scrub_opts.marker & FOM_SETTOS) { 1518 yyerror("set-tos cannot be respecified"); 1519 YYERROR; 1520 } 1521 scrub_opts.marker |= FOM_SETTOS; 1522 scrub_opts.settos = $2; 1523 } 1524 | fragcache { 1525 if (scrub_opts.marker & FOM_FRAGCACHE) { 1526 yyerror("fragcache cannot be respecified"); 1527 YYERROR; 1528 } 1529 scrub_opts.marker |= FOM_FRAGCACHE; 1530 scrub_opts.fragcache = $1; 1531 } 1532 | REASSEMBLE STRING { 1533 if (strcasecmp($2, "tcp") != 0) { 1534 yyerror("scrub reassemble supports only tcp, " 1535 "not '%s'", $2); 1536 free($2); 1537 YYERROR; 1538 } 1539 free($2); 1540 if (scrub_opts.reassemble_tcp) { 1541 yyerror("reassemble tcp cannot be respecified"); 1542 YYERROR; 1543 } 1544 scrub_opts.reassemble_tcp = 1; 1545 } 1546 | RANDOMID { 1547 if (scrub_opts.randomid) { 1548 yyerror("random-id cannot be respecified"); 1549 YYERROR; 1550 } 1551 scrub_opts.randomid = 1; 1552 } 1553 | RTABLE NUMBER { 1554 if ($2 < 0 || $2 > rt_tableid_max()) { 1555 yyerror("invalid rtable id"); 1556 YYERROR; 1557 } 1558 scrub_opts.rtableid = $2; 1559 } 1560 | not TAGGED string { 1561 scrub_opts.match_tag = $3; 1562 scrub_opts.match_tag_not = $1; 1563 } 1564 ; 1565 1566 fragcache : FRAGMENT REASSEMBLE { $$ = 0; /* default */ } 1567 | FRAGMENT NO REASSEMBLE { $$ = PFRULE_FRAGMENT_NOREASS; } 1568 ; 1569 1570 antispoof : ANTISPOOF logquick antispoof_ifspc af antispoof_opts { 1571 struct pfctl_rule r; 1572 struct node_host *h = NULL, *hh; 1573 struct node_if *i, *j; 1574 1575 if (check_rulestate(PFCTL_STATE_FILTER)) 1576 YYERROR; 1577 1578 for (i = $3; i; i = i->next) { 1579 bzero(&r, sizeof(r)); 1580 1581 r.action = PF_DROP; 1582 r.direction = PF_IN; 1583 r.log = $2.log; 1584 r.logif = $2.logif; 1585 r.quick = $2.quick; 1586 r.af = $4; 1587 r.ridentifier = $5.ridentifier; 1588 if (rule_label(&r, $5.label)) 1589 YYERROR; 1590 r.rtableid = $5.rtableid; 1591 j = calloc(1, sizeof(struct node_if)); 1592 if (j == NULL) 1593 err(1, "antispoof: calloc"); 1594 if (strlcpy(j->ifname, i->ifname, 1595 sizeof(j->ifname)) >= sizeof(j->ifname)) { 1596 free(j); 1597 yyerror("interface name too long"); 1598 YYERROR; 1599 } 1600 j->not = 1; 1601 if (i->dynamic) { 1602 h = calloc(1, sizeof(*h)); 1603 if (h == NULL) 1604 err(1, "address: calloc"); 1605 h->addr.type = PF_ADDR_DYNIFTL; 1606 set_ipmask(h, 128); 1607 if (strlcpy(h->addr.v.ifname, i->ifname, 1608 sizeof(h->addr.v.ifname)) >= 1609 sizeof(h->addr.v.ifname)) { 1610 free(h); 1611 yyerror( 1612 "interface name too long"); 1613 YYERROR; 1614 } 1615 hh = malloc(sizeof(*hh)); 1616 if (hh == NULL) 1617 err(1, "address: malloc"); 1618 bcopy(h, hh, sizeof(*hh)); 1619 h->addr.iflags = PFI_AFLAG_NETWORK; 1620 } else { 1621 h = ifa_lookup(j->ifname, 1622 PFI_AFLAG_NETWORK); 1623 hh = NULL; 1624 } 1625 1626 if (h != NULL) 1627 expand_rule(&r, j, NULL, NULL, NULL, h, 1628 NULL, NULL, NULL, NULL, NULL, 1629 NULL, ""); 1630 1631 if ((i->ifa_flags & IFF_LOOPBACK) == 0) { 1632 bzero(&r, sizeof(r)); 1633 1634 r.action = PF_DROP; 1635 r.direction = PF_IN; 1636 r.log = $2.log; 1637 r.logif = $2.logif; 1638 r.quick = $2.quick; 1639 r.af = $4; 1640 r.ridentifier = $5.ridentifier; 1641 if (rule_label(&r, $5.label)) 1642 YYERROR; 1643 r.rtableid = $5.rtableid; 1644 if (hh != NULL) 1645 h = hh; 1646 else 1647 h = ifa_lookup(i->ifname, 0); 1648 if (h != NULL) 1649 expand_rule(&r, NULL, NULL, 1650 NULL, NULL, h, NULL, NULL, 1651 NULL, NULL, NULL, NULL, ""); 1652 } else 1653 free(hh); 1654 } 1655 for (int i = 0; i < PF_RULE_MAX_LABEL_COUNT; i++) 1656 free($5.label[i]); 1657 } 1658 ; 1659 1660 antispoof_ifspc : FOR antispoof_if { $$ = $2; } 1661 | FOR '{' optnl antispoof_iflst '}' { $$ = $4; } 1662 ; 1663 1664 antispoof_iflst : antispoof_if optnl { $$ = $1; } 1665 | antispoof_iflst comma antispoof_if optnl { 1666 $1->tail->next = $3; 1667 $1->tail = $3; 1668 $$ = $1; 1669 } 1670 ; 1671 1672 antispoof_if : if_item { $$ = $1; } 1673 | '(' if_item ')' { 1674 $2->dynamic = 1; 1675 $$ = $2; 1676 } 1677 ; 1678 1679 antispoof_opts : { 1680 bzero(&antispoof_opts, sizeof antispoof_opts); 1681 antispoof_opts.rtableid = -1; 1682 } 1683 antispoof_opts_l 1684 { $$ = antispoof_opts; } 1685 | /* empty */ { 1686 bzero(&antispoof_opts, sizeof antispoof_opts); 1687 antispoof_opts.rtableid = -1; 1688 $$ = antispoof_opts; 1689 } 1690 ; 1691 1692 antispoof_opts_l : antispoof_opts_l antispoof_opt 1693 | antispoof_opt 1694 ; 1695 1696 antispoof_opt : label { 1697 if (antispoof_opts.labelcount >= PF_RULE_MAX_LABEL_COUNT) { 1698 yyerror("label can only be used %d times", PF_RULE_MAX_LABEL_COUNT); 1699 YYERROR; 1700 } 1701 antispoof_opts.label[antispoof_opts.labelcount++] = $1; 1702 } 1703 | RIDENTIFIER number { 1704 antispoof_opts.ridentifier = $2; 1705 } 1706 | RTABLE NUMBER { 1707 if ($2 < 0 || $2 > rt_tableid_max()) { 1708 yyerror("invalid rtable id"); 1709 YYERROR; 1710 } 1711 antispoof_opts.rtableid = $2; 1712 } 1713 ; 1714 1715 not : '!' { $$ = 1; } 1716 | /* empty */ { $$ = 0; } 1717 ; 1718 1719 tabledef : TABLE '<' STRING '>' table_opts { 1720 struct node_host *h, *nh; 1721 struct node_tinit *ti, *nti; 1722 1723 if (strlen($3) >= PF_TABLE_NAME_SIZE) { 1724 yyerror("table name too long, max %d chars", 1725 PF_TABLE_NAME_SIZE - 1); 1726 free($3); 1727 YYERROR; 1728 } 1729 if (pf->loadopt & PFCTL_FLAG_TABLE) 1730 if (process_tabledef($3, &$5)) { 1731 free($3); 1732 YYERROR; 1733 } 1734 free($3); 1735 for (ti = SIMPLEQ_FIRST(&$5.init_nodes); 1736 ti != SIMPLEQ_END(&$5.init_nodes); ti = nti) { 1737 if (ti->file) 1738 free(ti->file); 1739 for (h = ti->host; h != NULL; h = nh) { 1740 nh = h->next; 1741 free(h); 1742 } 1743 nti = SIMPLEQ_NEXT(ti, entries); 1744 free(ti); 1745 } 1746 } 1747 ; 1748 1749 table_opts : { 1750 bzero(&table_opts, sizeof table_opts); 1751 SIMPLEQ_INIT(&table_opts.init_nodes); 1752 } 1753 table_opts_l 1754 { $$ = table_opts; } 1755 | /* empty */ 1756 { 1757 bzero(&table_opts, sizeof table_opts); 1758 SIMPLEQ_INIT(&table_opts.init_nodes); 1759 $$ = table_opts; 1760 } 1761 ; 1762 1763 table_opts_l : table_opts_l table_opt 1764 | table_opt 1765 ; 1766 1767 table_opt : STRING { 1768 if (!strcmp($1, "const")) 1769 table_opts.flags |= PFR_TFLAG_CONST; 1770 else if (!strcmp($1, "persist")) 1771 table_opts.flags |= PFR_TFLAG_PERSIST; 1772 else if (!strcmp($1, "counters")) 1773 table_opts.flags |= PFR_TFLAG_COUNTERS; 1774 else { 1775 yyerror("invalid table option '%s'", $1); 1776 free($1); 1777 YYERROR; 1778 } 1779 free($1); 1780 } 1781 | '{' optnl '}' { table_opts.init_addr = 1; } 1782 | '{' optnl host_list '}' { 1783 struct node_host *n; 1784 struct node_tinit *ti; 1785 1786 for (n = $3; n != NULL; n = n->next) { 1787 switch (n->addr.type) { 1788 case PF_ADDR_ADDRMASK: 1789 continue; /* ok */ 1790 case PF_ADDR_RANGE: 1791 yyerror("address ranges are not " 1792 "permitted inside tables"); 1793 break; 1794 case PF_ADDR_DYNIFTL: 1795 yyerror("dynamic addresses are not " 1796 "permitted inside tables"); 1797 break; 1798 case PF_ADDR_TABLE: 1799 yyerror("tables cannot contain tables"); 1800 break; 1801 case PF_ADDR_NOROUTE: 1802 yyerror("\"no-route\" is not permitted " 1803 "inside tables"); 1804 break; 1805 case PF_ADDR_URPFFAILED: 1806 yyerror("\"urpf-failed\" is not " 1807 "permitted inside tables"); 1808 break; 1809 default: 1810 yyerror("unknown address type %d", 1811 n->addr.type); 1812 } 1813 YYERROR; 1814 } 1815 if (!(ti = calloc(1, sizeof(*ti)))) 1816 err(1, "table_opt: calloc"); 1817 ti->host = $3; 1818 SIMPLEQ_INSERT_TAIL(&table_opts.init_nodes, ti, 1819 entries); 1820 table_opts.init_addr = 1; 1821 } 1822 | FILENAME STRING { 1823 struct node_tinit *ti; 1824 1825 if (!(ti = calloc(1, sizeof(*ti)))) 1826 err(1, "table_opt: calloc"); 1827 ti->file = $2; 1828 SIMPLEQ_INSERT_TAIL(&table_opts.init_nodes, ti, 1829 entries); 1830 table_opts.init_addr = 1; 1831 } 1832 ; 1833 1834 altqif : ALTQ interface queue_opts QUEUE qassign { 1835 struct pf_altq a; 1836 1837 if (check_rulestate(PFCTL_STATE_QUEUE)) 1838 YYERROR; 1839 1840 memset(&a, 0, sizeof(a)); 1841 if ($3.scheduler.qtype == ALTQT_NONE) { 1842 yyerror("no scheduler specified!"); 1843 YYERROR; 1844 } 1845 a.scheduler = $3.scheduler.qtype; 1846 a.qlimit = $3.qlimit; 1847 a.tbrsize = $3.tbrsize; 1848 if ($5 == NULL && $3.scheduler.qtype != ALTQT_CODEL) { 1849 yyerror("no child queues specified"); 1850 YYERROR; 1851 } 1852 if (expand_altq(&a, $2, $5, $3.queue_bwspec, 1853 &$3.scheduler)) 1854 YYERROR; 1855 } 1856 ; 1857 1858 queuespec : QUEUE STRING interface queue_opts qassign { 1859 struct pf_altq a; 1860 1861 if (check_rulestate(PFCTL_STATE_QUEUE)) { 1862 free($2); 1863 YYERROR; 1864 } 1865 1866 memset(&a, 0, sizeof(a)); 1867 1868 if (strlcpy(a.qname, $2, sizeof(a.qname)) >= 1869 sizeof(a.qname)) { 1870 yyerror("queue name too long (max " 1871 "%d chars)", PF_QNAME_SIZE-1); 1872 free($2); 1873 YYERROR; 1874 } 1875 free($2); 1876 if ($4.tbrsize) { 1877 yyerror("cannot specify tbrsize for queue"); 1878 YYERROR; 1879 } 1880 if ($4.priority > 255) { 1881 yyerror("priority out of range: max 255"); 1882 YYERROR; 1883 } 1884 a.priority = $4.priority; 1885 a.qlimit = $4.qlimit; 1886 a.scheduler = $4.scheduler.qtype; 1887 if (expand_queue(&a, $3, $5, $4.queue_bwspec, 1888 &$4.scheduler)) { 1889 yyerror("errors in queue definition"); 1890 YYERROR; 1891 } 1892 } 1893 ; 1894 1895 queue_opts : { 1896 bzero(&queue_opts, sizeof queue_opts); 1897 queue_opts.priority = DEFAULT_PRIORITY; 1898 queue_opts.qlimit = DEFAULT_QLIMIT; 1899 queue_opts.scheduler.qtype = ALTQT_NONE; 1900 queue_opts.queue_bwspec.bw_percent = 100; 1901 } 1902 queue_opts_l 1903 { $$ = queue_opts; } 1904 | /* empty */ { 1905 bzero(&queue_opts, sizeof queue_opts); 1906 queue_opts.priority = DEFAULT_PRIORITY; 1907 queue_opts.qlimit = DEFAULT_QLIMIT; 1908 queue_opts.scheduler.qtype = ALTQT_NONE; 1909 queue_opts.queue_bwspec.bw_percent = 100; 1910 $$ = queue_opts; 1911 } 1912 ; 1913 1914 queue_opts_l : queue_opts_l queue_opt 1915 | queue_opt 1916 ; 1917 1918 queue_opt : BANDWIDTH bandwidth { 1919 if (queue_opts.marker & QOM_BWSPEC) { 1920 yyerror("bandwidth cannot be respecified"); 1921 YYERROR; 1922 } 1923 queue_opts.marker |= QOM_BWSPEC; 1924 queue_opts.queue_bwspec = $2; 1925 } 1926 | PRIORITY NUMBER { 1927 if (queue_opts.marker & QOM_PRIORITY) { 1928 yyerror("priority cannot be respecified"); 1929 YYERROR; 1930 } 1931 if ($2 < 0 || $2 > 255) { 1932 yyerror("priority out of range: max 255"); 1933 YYERROR; 1934 } 1935 queue_opts.marker |= QOM_PRIORITY; 1936 queue_opts.priority = $2; 1937 } 1938 | QLIMIT NUMBER { 1939 if (queue_opts.marker & QOM_QLIMIT) { 1940 yyerror("qlimit cannot be respecified"); 1941 YYERROR; 1942 } 1943 if ($2 < 0 || $2 > 65535) { 1944 yyerror("qlimit out of range: max 65535"); 1945 YYERROR; 1946 } 1947 queue_opts.marker |= QOM_QLIMIT; 1948 queue_opts.qlimit = $2; 1949 } 1950 | scheduler { 1951 if (queue_opts.marker & QOM_SCHEDULER) { 1952 yyerror("scheduler cannot be respecified"); 1953 YYERROR; 1954 } 1955 queue_opts.marker |= QOM_SCHEDULER; 1956 queue_opts.scheduler = $1; 1957 } 1958 | TBRSIZE NUMBER { 1959 if (queue_opts.marker & QOM_TBRSIZE) { 1960 yyerror("tbrsize cannot be respecified"); 1961 YYERROR; 1962 } 1963 if ($2 < 0 || $2 > UINT_MAX) { 1964 yyerror("tbrsize too big: max %u", UINT_MAX); 1965 YYERROR; 1966 } 1967 queue_opts.marker |= QOM_TBRSIZE; 1968 queue_opts.tbrsize = $2; 1969 } 1970 ; 1971 1972 bandwidth : STRING { 1973 double bps; 1974 char *cp; 1975 1976 $$.bw_percent = 0; 1977 1978 bps = strtod($1, &cp); 1979 if (cp != NULL) { 1980 if (strlen(cp) > 1) { 1981 char *cu = cp + 1; 1982 if (!strcmp(cu, "Bit") || 1983 !strcmp(cu, "B") || 1984 !strcmp(cu, "bit") || 1985 !strcmp(cu, "b")) { 1986 *cu = 0; 1987 } 1988 } 1989 if (!strcmp(cp, "b")) 1990 ; /* nothing */ 1991 else if (!strcmp(cp, "K")) 1992 bps *= 1000; 1993 else if (!strcmp(cp, "M")) 1994 bps *= 1000 * 1000; 1995 else if (!strcmp(cp, "G")) 1996 bps *= 1000 * 1000 * 1000; 1997 else if (!strcmp(cp, "%")) { 1998 if (bps < 0 || bps > 100) { 1999 yyerror("bandwidth spec " 2000 "out of range"); 2001 free($1); 2002 YYERROR; 2003 } 2004 $$.bw_percent = bps; 2005 bps = 0; 2006 } else { 2007 yyerror("unknown unit %s", cp); 2008 free($1); 2009 YYERROR; 2010 } 2011 } 2012 free($1); 2013 $$.bw_absolute = (u_int64_t)bps; 2014 } 2015 | NUMBER { 2016 if ($1 < 0 || $1 >= LLONG_MAX) { 2017 yyerror("bandwidth number too big"); 2018 YYERROR; 2019 } 2020 $$.bw_percent = 0; 2021 $$.bw_absolute = $1; 2022 } 2023 ; 2024 2025 scheduler : CBQ { 2026 $$.qtype = ALTQT_CBQ; 2027 $$.data.cbq_opts.flags = 0; 2028 } 2029 | CBQ '(' cbqflags_list ')' { 2030 $$.qtype = ALTQT_CBQ; 2031 $$.data.cbq_opts.flags = $3; 2032 } 2033 | PRIQ { 2034 $$.qtype = ALTQT_PRIQ; 2035 $$.data.priq_opts.flags = 0; 2036 } 2037 | PRIQ '(' priqflags_list ')' { 2038 $$.qtype = ALTQT_PRIQ; 2039 $$.data.priq_opts.flags = $3; 2040 } 2041 | HFSC { 2042 $$.qtype = ALTQT_HFSC; 2043 bzero(&$$.data.hfsc_opts, 2044 sizeof(struct node_hfsc_opts)); 2045 } 2046 | HFSC '(' hfsc_opts ')' { 2047 $$.qtype = ALTQT_HFSC; 2048 $$.data.hfsc_opts = $3; 2049 } 2050 | FAIRQ { 2051 $$.qtype = ALTQT_FAIRQ; 2052 bzero(&$$.data.fairq_opts, 2053 sizeof(struct node_fairq_opts)); 2054 } 2055 | FAIRQ '(' fairq_opts ')' { 2056 $$.qtype = ALTQT_FAIRQ; 2057 $$.data.fairq_opts = $3; 2058 } 2059 | CODEL { 2060 $$.qtype = ALTQT_CODEL; 2061 bzero(&$$.data.codel_opts, 2062 sizeof(struct codel_opts)); 2063 } 2064 | CODEL '(' codel_opts ')' { 2065 $$.qtype = ALTQT_CODEL; 2066 $$.data.codel_opts = $3; 2067 } 2068 ; 2069 2070 cbqflags_list : cbqflags_item { $$ |= $1; } 2071 | cbqflags_list comma cbqflags_item { $$ |= $3; } 2072 ; 2073 2074 cbqflags_item : STRING { 2075 if (!strcmp($1, "default")) 2076 $$ = CBQCLF_DEFCLASS; 2077 else if (!strcmp($1, "borrow")) 2078 $$ = CBQCLF_BORROW; 2079 else if (!strcmp($1, "red")) 2080 $$ = CBQCLF_RED; 2081 else if (!strcmp($1, "ecn")) 2082 $$ = CBQCLF_RED|CBQCLF_ECN; 2083 else if (!strcmp($1, "rio")) 2084 $$ = CBQCLF_RIO; 2085 else if (!strcmp($1, "codel")) 2086 $$ = CBQCLF_CODEL; 2087 else { 2088 yyerror("unknown cbq flag \"%s\"", $1); 2089 free($1); 2090 YYERROR; 2091 } 2092 free($1); 2093 } 2094 ; 2095 2096 priqflags_list : priqflags_item { $$ |= $1; } 2097 | priqflags_list comma priqflags_item { $$ |= $3; } 2098 ; 2099 2100 priqflags_item : STRING { 2101 if (!strcmp($1, "default")) 2102 $$ = PRCF_DEFAULTCLASS; 2103 else if (!strcmp($1, "red")) 2104 $$ = PRCF_RED; 2105 else if (!strcmp($1, "ecn")) 2106 $$ = PRCF_RED|PRCF_ECN; 2107 else if (!strcmp($1, "rio")) 2108 $$ = PRCF_RIO; 2109 else if (!strcmp($1, "codel")) 2110 $$ = PRCF_CODEL; 2111 else { 2112 yyerror("unknown priq flag \"%s\"", $1); 2113 free($1); 2114 YYERROR; 2115 } 2116 free($1); 2117 } 2118 ; 2119 2120 hfsc_opts : { 2121 bzero(&hfsc_opts, 2122 sizeof(struct node_hfsc_opts)); 2123 } 2124 hfscopts_list { 2125 $$ = hfsc_opts; 2126 } 2127 ; 2128 2129 hfscopts_list : hfscopts_item 2130 | hfscopts_list comma hfscopts_item 2131 ; 2132 2133 hfscopts_item : LINKSHARE bandwidth { 2134 if (hfsc_opts.linkshare.used) { 2135 yyerror("linkshare already specified"); 2136 YYERROR; 2137 } 2138 hfsc_opts.linkshare.m2 = $2; 2139 hfsc_opts.linkshare.used = 1; 2140 } 2141 | LINKSHARE '(' bandwidth comma NUMBER comma bandwidth ')' 2142 { 2143 if ($5 < 0 || $5 > INT_MAX) { 2144 yyerror("timing in curve out of range"); 2145 YYERROR; 2146 } 2147 if (hfsc_opts.linkshare.used) { 2148 yyerror("linkshare already specified"); 2149 YYERROR; 2150 } 2151 hfsc_opts.linkshare.m1 = $3; 2152 hfsc_opts.linkshare.d = $5; 2153 hfsc_opts.linkshare.m2 = $7; 2154 hfsc_opts.linkshare.used = 1; 2155 } 2156 | REALTIME bandwidth { 2157 if (hfsc_opts.realtime.used) { 2158 yyerror("realtime already specified"); 2159 YYERROR; 2160 } 2161 hfsc_opts.realtime.m2 = $2; 2162 hfsc_opts.realtime.used = 1; 2163 } 2164 | REALTIME '(' bandwidth comma NUMBER comma bandwidth ')' 2165 { 2166 if ($5 < 0 || $5 > INT_MAX) { 2167 yyerror("timing in curve out of range"); 2168 YYERROR; 2169 } 2170 if (hfsc_opts.realtime.used) { 2171 yyerror("realtime already specified"); 2172 YYERROR; 2173 } 2174 hfsc_opts.realtime.m1 = $3; 2175 hfsc_opts.realtime.d = $5; 2176 hfsc_opts.realtime.m2 = $7; 2177 hfsc_opts.realtime.used = 1; 2178 } 2179 | UPPERLIMIT bandwidth { 2180 if (hfsc_opts.upperlimit.used) { 2181 yyerror("upperlimit already specified"); 2182 YYERROR; 2183 } 2184 hfsc_opts.upperlimit.m2 = $2; 2185 hfsc_opts.upperlimit.used = 1; 2186 } 2187 | UPPERLIMIT '(' bandwidth comma NUMBER comma bandwidth ')' 2188 { 2189 if ($5 < 0 || $5 > INT_MAX) { 2190 yyerror("timing in curve out of range"); 2191 YYERROR; 2192 } 2193 if (hfsc_opts.upperlimit.used) { 2194 yyerror("upperlimit already specified"); 2195 YYERROR; 2196 } 2197 hfsc_opts.upperlimit.m1 = $3; 2198 hfsc_opts.upperlimit.d = $5; 2199 hfsc_opts.upperlimit.m2 = $7; 2200 hfsc_opts.upperlimit.used = 1; 2201 } 2202 | STRING { 2203 if (!strcmp($1, "default")) 2204 hfsc_opts.flags |= HFCF_DEFAULTCLASS; 2205 else if (!strcmp($1, "red")) 2206 hfsc_opts.flags |= HFCF_RED; 2207 else if (!strcmp($1, "ecn")) 2208 hfsc_opts.flags |= HFCF_RED|HFCF_ECN; 2209 else if (!strcmp($1, "rio")) 2210 hfsc_opts.flags |= HFCF_RIO; 2211 else if (!strcmp($1, "codel")) 2212 hfsc_opts.flags |= HFCF_CODEL; 2213 else { 2214 yyerror("unknown hfsc flag \"%s\"", $1); 2215 free($1); 2216 YYERROR; 2217 } 2218 free($1); 2219 } 2220 ; 2221 2222 fairq_opts : { 2223 bzero(&fairq_opts, 2224 sizeof(struct node_fairq_opts)); 2225 } 2226 fairqopts_list { 2227 $$ = fairq_opts; 2228 } 2229 ; 2230 2231 fairqopts_list : fairqopts_item 2232 | fairqopts_list comma fairqopts_item 2233 ; 2234 2235 fairqopts_item : LINKSHARE bandwidth { 2236 if (fairq_opts.linkshare.used) { 2237 yyerror("linkshare already specified"); 2238 YYERROR; 2239 } 2240 fairq_opts.linkshare.m2 = $2; 2241 fairq_opts.linkshare.used = 1; 2242 } 2243 | LINKSHARE '(' bandwidth number bandwidth ')' { 2244 if (fairq_opts.linkshare.used) { 2245 yyerror("linkshare already specified"); 2246 YYERROR; 2247 } 2248 fairq_opts.linkshare.m1 = $3; 2249 fairq_opts.linkshare.d = $4; 2250 fairq_opts.linkshare.m2 = $5; 2251 fairq_opts.linkshare.used = 1; 2252 } 2253 | HOGS bandwidth { 2254 fairq_opts.hogs_bw = $2; 2255 } 2256 | BUCKETS number { 2257 fairq_opts.nbuckets = $2; 2258 } 2259 | STRING { 2260 if (!strcmp($1, "default")) 2261 fairq_opts.flags |= FARF_DEFAULTCLASS; 2262 else if (!strcmp($1, "red")) 2263 fairq_opts.flags |= FARF_RED; 2264 else if (!strcmp($1, "ecn")) 2265 fairq_opts.flags |= FARF_RED|FARF_ECN; 2266 else if (!strcmp($1, "rio")) 2267 fairq_opts.flags |= FARF_RIO; 2268 else if (!strcmp($1, "codel")) 2269 fairq_opts.flags |= FARF_CODEL; 2270 else { 2271 yyerror("unknown fairq flag \"%s\"", $1); 2272 free($1); 2273 YYERROR; 2274 } 2275 free($1); 2276 } 2277 ; 2278 2279 codel_opts : { 2280 bzero(&codel_opts, 2281 sizeof(struct codel_opts)); 2282 } 2283 codelopts_list { 2284 $$ = codel_opts; 2285 } 2286 ; 2287 2288 codelopts_list : codelopts_item 2289 | codelopts_list comma codelopts_item 2290 ; 2291 2292 codelopts_item : INTERVAL number { 2293 if (codel_opts.interval) { 2294 yyerror("interval already specified"); 2295 YYERROR; 2296 } 2297 codel_opts.interval = $2; 2298 } 2299 | TARGET number { 2300 if (codel_opts.target) { 2301 yyerror("target already specified"); 2302 YYERROR; 2303 } 2304 codel_opts.target = $2; 2305 } 2306 | STRING { 2307 if (!strcmp($1, "ecn")) 2308 codel_opts.ecn = 1; 2309 else { 2310 yyerror("unknown codel option \"%s\"", $1); 2311 free($1); 2312 YYERROR; 2313 } 2314 free($1); 2315 } 2316 ; 2317 2318 qassign : /* empty */ { $$ = NULL; } 2319 | qassign_item { $$ = $1; } 2320 | '{' optnl qassign_list '}' { $$ = $3; } 2321 ; 2322 2323 qassign_list : qassign_item optnl { $$ = $1; } 2324 | qassign_list comma qassign_item optnl { 2325 $1->tail->next = $3; 2326 $1->tail = $3; 2327 $$ = $1; 2328 } 2329 ; 2330 2331 qassign_item : STRING { 2332 $$ = calloc(1, sizeof(struct node_queue)); 2333 if ($$ == NULL) 2334 err(1, "qassign_item: calloc"); 2335 if (strlcpy($$->queue, $1, sizeof($$->queue)) >= 2336 sizeof($$->queue)) { 2337 yyerror("queue name '%s' too long (max " 2338 "%d chars)", $1, sizeof($$->queue)-1); 2339 free($1); 2340 free($$); 2341 YYERROR; 2342 } 2343 free($1); 2344 $$->next = NULL; 2345 $$->tail = $$; 2346 } 2347 ; 2348 2349 pfrule : action dir logquick interface route af proto fromto 2350 filter_opts 2351 { 2352 struct pfctl_rule r; 2353 struct node_state_opt *o; 2354 struct node_proto *proto; 2355 int srctrack = 0; 2356 int statelock = 0; 2357 int adaptive = 0; 2358 int defaults = 0; 2359 2360 if (check_rulestate(PFCTL_STATE_FILTER)) 2361 YYERROR; 2362 2363 memset(&r, 0, sizeof(r)); 2364 2365 r.action = $1.b1; 2366 switch ($1.b2) { 2367 case PFRULE_RETURNRST: 2368 r.rule_flag |= PFRULE_RETURNRST; 2369 r.return_ttl = $1.w; 2370 break; 2371 case PFRULE_RETURNICMP: 2372 r.rule_flag |= PFRULE_RETURNICMP; 2373 r.return_icmp = $1.w; 2374 r.return_icmp6 = $1.w2; 2375 break; 2376 case PFRULE_RETURN: 2377 r.rule_flag |= PFRULE_RETURN; 2378 r.return_icmp = $1.w; 2379 r.return_icmp6 = $1.w2; 2380 break; 2381 } 2382 r.direction = $2; 2383 r.log = $3.log; 2384 r.logif = $3.logif; 2385 r.quick = $3.quick; 2386 r.prob = $9.prob; 2387 r.rtableid = $9.rtableid; 2388 2389 if ($9.nodf) 2390 r.scrub_flags |= PFSTATE_NODF; 2391 if ($9.randomid) 2392 r.scrub_flags |= PFSTATE_RANDOMID; 2393 if ($9.minttl) 2394 r.min_ttl = $9.minttl; 2395 if ($9.max_mss) 2396 r.max_mss = $9.max_mss; 2397 if ($9.marker & FOM_SETTOS) { 2398 r.scrub_flags |= PFSTATE_SETTOS; 2399 r.set_tos = $9.settos; 2400 } 2401 if ($9.marker & FOM_SCRUB_TCP) 2402 r.scrub_flags |= PFSTATE_SCRUB_TCP; 2403 2404 if ($9.marker & FOM_PRIO) { 2405 if ($9.prio == 0) 2406 r.prio = PF_PRIO_ZERO; 2407 else 2408 r.prio = $9.prio; 2409 } 2410 if ($9.marker & FOM_SETPRIO) { 2411 r.set_prio[0] = $9.set_prio[0]; 2412 r.set_prio[1] = $9.set_prio[1]; 2413 r.scrub_flags |= PFSTATE_SETPRIO; 2414 } 2415 2416 r.af = $6; 2417 if ($9.tag) 2418 if (strlcpy(r.tagname, $9.tag, 2419 PF_TAG_NAME_SIZE) >= PF_TAG_NAME_SIZE) { 2420 yyerror("tag too long, max %u chars", 2421 PF_TAG_NAME_SIZE - 1); 2422 YYERROR; 2423 } 2424 if ($9.match_tag) 2425 if (strlcpy(r.match_tagname, $9.match_tag, 2426 PF_TAG_NAME_SIZE) >= PF_TAG_NAME_SIZE) { 2427 yyerror("tag too long, max %u chars", 2428 PF_TAG_NAME_SIZE - 1); 2429 YYERROR; 2430 } 2431 r.match_tag_not = $9.match_tag_not; 2432 if (rule_label(&r, $9.label)) 2433 YYERROR; 2434 for (int i = 0; i < PF_RULE_MAX_LABEL_COUNT; i++) 2435 free($9.label[i]); 2436 r.ridentifier = $9.ridentifier; 2437 r.flags = $9.flags.b1; 2438 r.flagset = $9.flags.b2; 2439 if (($9.flags.b1 & $9.flags.b2) != $9.flags.b1) { 2440 yyerror("flags always false"); 2441 YYERROR; 2442 } 2443 if ($9.flags.b1 || $9.flags.b2 || $8.src_os) { 2444 for (proto = $7; proto != NULL && 2445 proto->proto != IPPROTO_TCP; 2446 proto = proto->next) 2447 ; /* nothing */ 2448 if (proto == NULL && $7 != NULL) { 2449 if ($9.flags.b1 || $9.flags.b2) 2450 yyerror( 2451 "flags only apply to tcp"); 2452 if ($8.src_os) 2453 yyerror( 2454 "OS fingerprinting only " 2455 "apply to tcp"); 2456 YYERROR; 2457 } 2458 #if 0 2459 if (($9.flags.b1 & parse_flags("S")) == 0 && 2460 $8.src_os) { 2461 yyerror("OS fingerprinting requires " 2462 "the SYN TCP flag (flags S/SA)"); 2463 YYERROR; 2464 } 2465 #endif 2466 } 2467 2468 r.tos = $9.tos; 2469 r.keep_state = $9.keep.action; 2470 o = $9.keep.options; 2471 2472 /* 'keep state' by default on pass rules. */ 2473 if (!r.keep_state && !r.action && 2474 !($9.marker & FOM_KEEP)) { 2475 r.keep_state = PF_STATE_NORMAL; 2476 o = keep_state_defaults; 2477 defaults = 1; 2478 } 2479 2480 while (o) { 2481 struct node_state_opt *p = o; 2482 2483 switch (o->type) { 2484 case PF_STATE_OPT_MAX: 2485 if (r.max_states) { 2486 yyerror("state option 'max' " 2487 "multiple definitions"); 2488 YYERROR; 2489 } 2490 r.max_states = o->data.max_states; 2491 break; 2492 case PF_STATE_OPT_NOSYNC: 2493 if (r.rule_flag & PFRULE_NOSYNC) { 2494 yyerror("state option 'sync' " 2495 "multiple definitions"); 2496 YYERROR; 2497 } 2498 r.rule_flag |= PFRULE_NOSYNC; 2499 break; 2500 case PF_STATE_OPT_SRCTRACK: 2501 if (srctrack) { 2502 yyerror("state option " 2503 "'source-track' " 2504 "multiple definitions"); 2505 YYERROR; 2506 } 2507 srctrack = o->data.src_track; 2508 r.rule_flag |= PFRULE_SRCTRACK; 2509 break; 2510 case PF_STATE_OPT_MAX_SRC_STATES: 2511 if (r.max_src_states) { 2512 yyerror("state option " 2513 "'max-src-states' " 2514 "multiple definitions"); 2515 YYERROR; 2516 } 2517 if (o->data.max_src_states == 0) { 2518 yyerror("'max-src-states' must " 2519 "be > 0"); 2520 YYERROR; 2521 } 2522 r.max_src_states = 2523 o->data.max_src_states; 2524 r.rule_flag |= PFRULE_SRCTRACK; 2525 break; 2526 case PF_STATE_OPT_OVERLOAD: 2527 if (r.overload_tblname[0]) { 2528 yyerror("multiple 'overload' " 2529 "table definitions"); 2530 YYERROR; 2531 } 2532 if (strlcpy(r.overload_tblname, 2533 o->data.overload.tblname, 2534 PF_TABLE_NAME_SIZE) >= 2535 PF_TABLE_NAME_SIZE) { 2536 yyerror("state option: " 2537 "strlcpy"); 2538 YYERROR; 2539 } 2540 r.flush = o->data.overload.flush; 2541 break; 2542 case PF_STATE_OPT_MAX_SRC_CONN: 2543 if (r.max_src_conn) { 2544 yyerror("state option " 2545 "'max-src-conn' " 2546 "multiple definitions"); 2547 YYERROR; 2548 } 2549 if (o->data.max_src_conn == 0) { 2550 yyerror("'max-src-conn' " 2551 "must be > 0"); 2552 YYERROR; 2553 } 2554 r.max_src_conn = 2555 o->data.max_src_conn; 2556 r.rule_flag |= PFRULE_SRCTRACK | 2557 PFRULE_RULESRCTRACK; 2558 break; 2559 case PF_STATE_OPT_MAX_SRC_CONN_RATE: 2560 if (r.max_src_conn_rate.limit) { 2561 yyerror("state option " 2562 "'max-src-conn-rate' " 2563 "multiple definitions"); 2564 YYERROR; 2565 } 2566 if (!o->data.max_src_conn_rate.limit || 2567 !o->data.max_src_conn_rate.seconds) { 2568 yyerror("'max-src-conn-rate' " 2569 "values must be > 0"); 2570 YYERROR; 2571 } 2572 if (o->data.max_src_conn_rate.limit > 2573 PF_THRESHOLD_MAX) { 2574 yyerror("'max-src-conn-rate' " 2575 "maximum rate must be < %u", 2576 PF_THRESHOLD_MAX); 2577 YYERROR; 2578 } 2579 r.max_src_conn_rate.limit = 2580 o->data.max_src_conn_rate.limit; 2581 r.max_src_conn_rate.seconds = 2582 o->data.max_src_conn_rate.seconds; 2583 r.rule_flag |= PFRULE_SRCTRACK | 2584 PFRULE_RULESRCTRACK; 2585 break; 2586 case PF_STATE_OPT_MAX_SRC_NODES: 2587 if (r.max_src_nodes) { 2588 yyerror("state option " 2589 "'max-src-nodes' " 2590 "multiple definitions"); 2591 YYERROR; 2592 } 2593 if (o->data.max_src_nodes == 0) { 2594 yyerror("'max-src-nodes' must " 2595 "be > 0"); 2596 YYERROR; 2597 } 2598 r.max_src_nodes = 2599 o->data.max_src_nodes; 2600 r.rule_flag |= PFRULE_SRCTRACK | 2601 PFRULE_RULESRCTRACK; 2602 break; 2603 case PF_STATE_OPT_STATELOCK: 2604 if (statelock) { 2605 yyerror("state locking option: " 2606 "multiple definitions"); 2607 YYERROR; 2608 } 2609 statelock = 1; 2610 r.rule_flag |= o->data.statelock; 2611 break; 2612 case PF_STATE_OPT_SLOPPY: 2613 if (r.rule_flag & PFRULE_STATESLOPPY) { 2614 yyerror("state sloppy option: " 2615 "multiple definitions"); 2616 YYERROR; 2617 } 2618 r.rule_flag |= PFRULE_STATESLOPPY; 2619 break; 2620 case PF_STATE_OPT_PFLOW: 2621 if (r.rule_flag & PFRULE_PFLOW) { 2622 yyerror("state pflow option: " 2623 "multiple definitions"); 2624 YYERROR; 2625 } 2626 r.rule_flag |= PFRULE_PFLOW; 2627 break; 2628 case PF_STATE_OPT_TIMEOUT: 2629 if (o->data.timeout.number == 2630 PFTM_ADAPTIVE_START || 2631 o->data.timeout.number == 2632 PFTM_ADAPTIVE_END) 2633 adaptive = 1; 2634 if (r.timeout[o->data.timeout.number]) { 2635 yyerror("state timeout %s " 2636 "multiple definitions", 2637 pf_timeouts[o->data. 2638 timeout.number].name); 2639 YYERROR; 2640 } 2641 r.timeout[o->data.timeout.number] = 2642 o->data.timeout.seconds; 2643 } 2644 o = o->next; 2645 if (!defaults) 2646 free(p); 2647 } 2648 2649 /* 'flags S/SA' by default on stateful rules */ 2650 if (!r.action && !r.flags && !r.flagset && 2651 !$9.fragment && !($9.marker & FOM_FLAGS) && 2652 r.keep_state) { 2653 r.flags = parse_flags("S"); 2654 r.flagset = parse_flags("SA"); 2655 } 2656 if (!adaptive && r.max_states) { 2657 r.timeout[PFTM_ADAPTIVE_START] = 2658 (r.max_states / 10) * 6; 2659 r.timeout[PFTM_ADAPTIVE_END] = 2660 (r.max_states / 10) * 12; 2661 } 2662 if (r.rule_flag & PFRULE_SRCTRACK) { 2663 if (srctrack == PF_SRCTRACK_GLOBAL && 2664 r.max_src_nodes) { 2665 yyerror("'max-src-nodes' is " 2666 "incompatible with " 2667 "'source-track global'"); 2668 YYERROR; 2669 } 2670 if (srctrack == PF_SRCTRACK_GLOBAL && 2671 r.max_src_conn) { 2672 yyerror("'max-src-conn' is " 2673 "incompatible with " 2674 "'source-track global'"); 2675 YYERROR; 2676 } 2677 if (srctrack == PF_SRCTRACK_GLOBAL && 2678 r.max_src_conn_rate.seconds) { 2679 yyerror("'max-src-conn-rate' is " 2680 "incompatible with " 2681 "'source-track global'"); 2682 YYERROR; 2683 } 2684 if (r.timeout[PFTM_SRC_NODE] < 2685 r.max_src_conn_rate.seconds) 2686 r.timeout[PFTM_SRC_NODE] = 2687 r.max_src_conn_rate.seconds; 2688 r.rule_flag |= PFRULE_SRCTRACK; 2689 if (srctrack == PF_SRCTRACK_RULE) 2690 r.rule_flag |= PFRULE_RULESRCTRACK; 2691 } 2692 if (r.keep_state && !statelock) 2693 r.rule_flag |= default_statelock; 2694 2695 if ($9.fragment) 2696 r.rule_flag |= PFRULE_FRAGMENT; 2697 r.allow_opts = $9.allowopts; 2698 2699 decide_address_family($8.src.host, &r.af); 2700 decide_address_family($8.dst.host, &r.af); 2701 2702 if ($5.rt) { 2703 if (!r.direction) { 2704 yyerror("direction must be explicit " 2705 "with rules that specify routing"); 2706 YYERROR; 2707 } 2708 r.rt = $5.rt; 2709 r.rpool.opts = $5.pool_opts; 2710 if ($5.key != NULL) 2711 memcpy(&r.rpool.key, $5.key, 2712 sizeof(struct pf_poolhashkey)); 2713 } 2714 if (r.rt) { 2715 decide_address_family($5.host, &r.af); 2716 remove_invalid_hosts(&$5.host, &r.af); 2717 if ($5.host == NULL) { 2718 yyerror("no routing address with " 2719 "matching address family found."); 2720 YYERROR; 2721 } 2722 if ((r.rpool.opts & PF_POOL_TYPEMASK) == 2723 PF_POOL_NONE && ($5.host->next != NULL || 2724 $5.host->addr.type == PF_ADDR_TABLE || 2725 DYNIF_MULTIADDR($5.host->addr))) 2726 r.rpool.opts |= PF_POOL_ROUNDROBIN; 2727 if ((r.rpool.opts & PF_POOL_TYPEMASK) != 2728 PF_POOL_ROUNDROBIN && 2729 disallow_table($5.host, "tables are only " 2730 "supported in round-robin routing pools")) 2731 YYERROR; 2732 if ((r.rpool.opts & PF_POOL_TYPEMASK) != 2733 PF_POOL_ROUNDROBIN && 2734 disallow_alias($5.host, "interface (%s) " 2735 "is only supported in round-robin " 2736 "routing pools")) 2737 YYERROR; 2738 if ($5.host->next != NULL) { 2739 if ((r.rpool.opts & PF_POOL_TYPEMASK) != 2740 PF_POOL_ROUNDROBIN) { 2741 yyerror("r.rpool.opts must " 2742 "be PF_POOL_ROUNDROBIN"); 2743 YYERROR; 2744 } 2745 } 2746 } 2747 if ($9.queues.qname != NULL) { 2748 if (strlcpy(r.qname, $9.queues.qname, 2749 sizeof(r.qname)) >= sizeof(r.qname)) { 2750 yyerror("rule qname too long (max " 2751 "%d chars)", sizeof(r.qname)-1); 2752 YYERROR; 2753 } 2754 free($9.queues.qname); 2755 } 2756 if ($9.queues.pqname != NULL) { 2757 if (strlcpy(r.pqname, $9.queues.pqname, 2758 sizeof(r.pqname)) >= sizeof(r.pqname)) { 2759 yyerror("rule pqname too long (max " 2760 "%d chars)", sizeof(r.pqname)-1); 2761 YYERROR; 2762 } 2763 free($9.queues.pqname); 2764 } 2765 #ifdef __FreeBSD__ 2766 r.divert.port = $9.divert.port; 2767 #else 2768 if ((r.divert.port = $9.divert.port)) { 2769 if (r.direction == PF_OUT) { 2770 if ($9.divert.addr) { 2771 yyerror("address specified " 2772 "for outgoing divert"); 2773 YYERROR; 2774 } 2775 bzero(&r.divert.addr, 2776 sizeof(r.divert.addr)); 2777 } else { 2778 if (!$9.divert.addr) { 2779 yyerror("no address specified " 2780 "for incoming divert"); 2781 YYERROR; 2782 } 2783 if ($9.divert.addr->af != r.af) { 2784 yyerror("address family " 2785 "mismatch for divert"); 2786 YYERROR; 2787 } 2788 r.divert.addr = 2789 $9.divert.addr->addr.v.a.addr; 2790 } 2791 } 2792 #endif 2793 2794 if ($9.dnpipe || $9.dnrpipe) { 2795 r.dnpipe = $9.dnpipe; 2796 r.dnrpipe = $9.dnrpipe; 2797 if ($9.free_flags & PFRULE_DN_IS_PIPE) 2798 r.free_flags |= PFRULE_DN_IS_PIPE; 2799 else 2800 r.free_flags |= PFRULE_DN_IS_QUEUE; 2801 } 2802 2803 expand_rule(&r, $4, $5.host, $7, $8.src_os, 2804 $8.src.host, $8.src.port, $8.dst.host, $8.dst.port, 2805 $9.uid, $9.gid, $9.icmpspec, ""); 2806 } 2807 ; 2808 2809 filter_opts : { 2810 bzero(&filter_opts, sizeof filter_opts); 2811 filter_opts.rtableid = -1; 2812 } 2813 filter_opts_l 2814 { $$ = filter_opts; } 2815 | /* empty */ { 2816 bzero(&filter_opts, sizeof filter_opts); 2817 filter_opts.rtableid = -1; 2818 $$ = filter_opts; 2819 } 2820 ; 2821 2822 filter_opts_l : filter_opts_l filter_opt 2823 | filter_opt 2824 ; 2825 2826 filter_opt : USER uids { 2827 if (filter_opts.uid) 2828 $2->tail->next = filter_opts.uid; 2829 filter_opts.uid = $2; 2830 } 2831 | GROUP gids { 2832 if (filter_opts.gid) 2833 $2->tail->next = filter_opts.gid; 2834 filter_opts.gid = $2; 2835 } 2836 | flags { 2837 if (filter_opts.marker & FOM_FLAGS) { 2838 yyerror("flags cannot be redefined"); 2839 YYERROR; 2840 } 2841 filter_opts.marker |= FOM_FLAGS; 2842 filter_opts.flags.b1 |= $1.b1; 2843 filter_opts.flags.b2 |= $1.b2; 2844 filter_opts.flags.w |= $1.w; 2845 filter_opts.flags.w2 |= $1.w2; 2846 } 2847 | icmpspec { 2848 if (filter_opts.marker & FOM_ICMP) { 2849 yyerror("icmp-type cannot be redefined"); 2850 YYERROR; 2851 } 2852 filter_opts.marker |= FOM_ICMP; 2853 filter_opts.icmpspec = $1; 2854 } 2855 | PRIO NUMBER { 2856 if (filter_opts.marker & FOM_PRIO) { 2857 yyerror("prio cannot be redefined"); 2858 YYERROR; 2859 } 2860 if ($2 < 0 || $2 > PF_PRIO_MAX) { 2861 yyerror("prio must be 0 - %u", PF_PRIO_MAX); 2862 YYERROR; 2863 } 2864 filter_opts.marker |= FOM_PRIO; 2865 filter_opts.prio = $2; 2866 } 2867 | TOS tos { 2868 if (filter_opts.marker & FOM_TOS) { 2869 yyerror("tos cannot be redefined"); 2870 YYERROR; 2871 } 2872 filter_opts.marker |= FOM_TOS; 2873 filter_opts.tos = $2; 2874 } 2875 | keep { 2876 if (filter_opts.marker & FOM_KEEP) { 2877 yyerror("modulate or keep cannot be redefined"); 2878 YYERROR; 2879 } 2880 filter_opts.marker |= FOM_KEEP; 2881 filter_opts.keep.action = $1.action; 2882 filter_opts.keep.options = $1.options; 2883 } 2884 | RIDENTIFIER number { 2885 filter_opts.ridentifier = $2; 2886 } 2887 | FRAGMENT { 2888 filter_opts.fragment = 1; 2889 } 2890 | ALLOWOPTS { 2891 filter_opts.allowopts = 1; 2892 } 2893 | label { 2894 if (filter_opts.labelcount >= PF_RULE_MAX_LABEL_COUNT) { 2895 yyerror("label can only be used %d times", PF_RULE_MAX_LABEL_COUNT); 2896 YYERROR; 2897 } 2898 filter_opts.label[filter_opts.labelcount++] = $1; 2899 } 2900 | qname { 2901 if (filter_opts.queues.qname) { 2902 yyerror("queue cannot be redefined"); 2903 YYERROR; 2904 } 2905 filter_opts.queues = $1; 2906 } 2907 | DNPIPE number { 2908 filter_opts.dnpipe = $2; 2909 filter_opts.free_flags |= PFRULE_DN_IS_PIPE; 2910 } 2911 | DNPIPE '(' number ')' { 2912 filter_opts.dnpipe = $3; 2913 filter_opts.free_flags |= PFRULE_DN_IS_PIPE; 2914 } 2915 | DNPIPE '(' number comma number ')' { 2916 filter_opts.dnrpipe = $5; 2917 filter_opts.dnpipe = $3; 2918 filter_opts.free_flags |= PFRULE_DN_IS_PIPE; 2919 } 2920 | DNQUEUE number { 2921 filter_opts.dnpipe = $2; 2922 filter_opts.free_flags |= PFRULE_DN_IS_QUEUE; 2923 } 2924 | DNQUEUE '(' number comma number ')' { 2925 filter_opts.dnrpipe = $5; 2926 filter_opts.dnpipe = $3; 2927 filter_opts.free_flags |= PFRULE_DN_IS_QUEUE; 2928 } 2929 | DNQUEUE '(' number ')' { 2930 filter_opts.dnpipe = $3; 2931 filter_opts.free_flags |= PFRULE_DN_IS_QUEUE; 2932 } 2933 | TAG string { 2934 filter_opts.tag = $2; 2935 } 2936 | not TAGGED string { 2937 filter_opts.match_tag = $3; 2938 filter_opts.match_tag_not = $1; 2939 } 2940 | PROBABILITY probability { 2941 double p; 2942 2943 p = floor($2 * UINT_MAX + 0.5); 2944 if (p < 0.0 || p > UINT_MAX) { 2945 yyerror("invalid probability: %lf", p); 2946 YYERROR; 2947 } 2948 filter_opts.prob = (u_int32_t)p; 2949 if (filter_opts.prob == 0) 2950 filter_opts.prob = 1; 2951 } 2952 | RTABLE NUMBER { 2953 if ($2 < 0 || $2 > rt_tableid_max()) { 2954 yyerror("invalid rtable id"); 2955 YYERROR; 2956 } 2957 filter_opts.rtableid = $2; 2958 } 2959 | DIVERTTO portplain { 2960 #ifdef __FreeBSD__ 2961 filter_opts.divert.port = $2.a; 2962 if (!filter_opts.divert.port) { 2963 yyerror("invalid divert port: %u", ntohs($2.a)); 2964 YYERROR; 2965 } 2966 #endif 2967 } 2968 | DIVERTTO STRING PORT portplain { 2969 #ifndef __FreeBSD__ 2970 if ((filter_opts.divert.addr = host($2)) == NULL) { 2971 yyerror("could not parse divert address: %s", 2972 $2); 2973 free($2); 2974 YYERROR; 2975 } 2976 #else 2977 if ($2) 2978 #endif 2979 free($2); 2980 filter_opts.divert.port = $4.a; 2981 if (!filter_opts.divert.port) { 2982 yyerror("invalid divert port: %u", ntohs($4.a)); 2983 YYERROR; 2984 } 2985 } 2986 | DIVERTREPLY { 2987 #ifdef __FreeBSD__ 2988 yyerror("divert-reply has no meaning in FreeBSD pf(4)"); 2989 YYERROR; 2990 #else 2991 filter_opts.divert.port = 1; /* some random value */ 2992 #endif 2993 } 2994 | SCRUB '(' scrub_opts ')' { 2995 filter_opts.nodf = $3.nodf; 2996 filter_opts.minttl = $3.minttl; 2997 if ($3.marker & FOM_SETTOS) { 2998 /* Old style rules are "scrub set-tos 0x42" 2999 * New style are "set tos 0x42 scrub (...)" 3000 * What is in "scrub(...)"" is unfortunately the 3001 * original scrub syntax so it would overwrite 3002 * "set tos" of a pass/match rule. 3003 */ 3004 filter_opts.settos = $3.settos; 3005 } 3006 filter_opts.randomid = $3.randomid; 3007 filter_opts.max_mss = $3.maxmss; 3008 if ($3.reassemble_tcp) 3009 filter_opts.marker |= FOM_SCRUB_TCP; 3010 filter_opts.marker |= $3.marker; 3011 } 3012 | filter_sets 3013 ; 3014 3015 filter_sets : SET '(' filter_sets_l ')' { $$ = filter_opts; } 3016 | SET filter_set { $$ = filter_opts; } 3017 ; 3018 3019 filter_sets_l : filter_sets_l comma filter_set 3020 | filter_set 3021 ; 3022 3023 filter_set : prio { 3024 if (filter_opts.marker & FOM_SETPRIO) { 3025 yyerror("prio cannot be redefined"); 3026 YYERROR; 3027 } 3028 filter_opts.marker |= FOM_SETPRIO; 3029 filter_opts.set_prio[0] = $1.b1; 3030 filter_opts.set_prio[1] = $1.b2; 3031 } 3032 | TOS tos { 3033 if (filter_opts.marker & FOM_SETTOS) { 3034 yyerror("tos cannot be respecified"); 3035 YYERROR; 3036 } 3037 filter_opts.marker |= FOM_SETTOS; 3038 filter_opts.settos = $2; 3039 } 3040 prio : PRIO NUMBER { 3041 if ($2 < 0 || $2 > PF_PRIO_MAX) { 3042 yyerror("prio must be 0 - %u", PF_PRIO_MAX); 3043 YYERROR; 3044 } 3045 $$.b1 = $$.b2 = $2; 3046 } 3047 | PRIO '(' NUMBER comma NUMBER ')' { 3048 if ($3 < 0 || $3 > PF_PRIO_MAX || 3049 $5 < 0 || $5 > PF_PRIO_MAX) { 3050 yyerror("prio must be 0 - %u", PF_PRIO_MAX); 3051 YYERROR; 3052 } 3053 $$.b1 = $3; 3054 $$.b2 = $5; 3055 } 3056 ; 3057 3058 probability : STRING { 3059 char *e; 3060 double p = strtod($1, &e); 3061 3062 if (*e == '%') { 3063 p *= 0.01; 3064 e++; 3065 } 3066 if (*e) { 3067 yyerror("invalid probability: %s", $1); 3068 free($1); 3069 YYERROR; 3070 } 3071 free($1); 3072 $$ = p; 3073 } 3074 | NUMBER { 3075 $$ = (double)$1; 3076 } 3077 ; 3078 3079 3080 action : PASS { 3081 $$.b1 = PF_PASS; 3082 $$.b2 = failpolicy; 3083 $$.w = returnicmpdefault; 3084 $$.w2 = returnicmp6default; 3085 } 3086 | MATCH { $$.b1 = PF_MATCH; $$.b2 = $$.w = 0; } 3087 | BLOCK blockspec { $$ = $2; $$.b1 = PF_DROP; } 3088 ; 3089 3090 blockspec : /* empty */ { 3091 $$.b2 = blockpolicy; 3092 $$.w = returnicmpdefault; 3093 $$.w2 = returnicmp6default; 3094 } 3095 | DROP { 3096 $$.b2 = PFRULE_DROP; 3097 $$.w = 0; 3098 $$.w2 = 0; 3099 } 3100 | RETURNRST { 3101 $$.b2 = PFRULE_RETURNRST; 3102 $$.w = 0; 3103 $$.w2 = 0; 3104 } 3105 | RETURNRST '(' TTL NUMBER ')' { 3106 if ($4 < 0 || $4 > 255) { 3107 yyerror("illegal ttl value %d", $4); 3108 YYERROR; 3109 } 3110 $$.b2 = PFRULE_RETURNRST; 3111 $$.w = $4; 3112 $$.w2 = 0; 3113 } 3114 | RETURNICMP { 3115 $$.b2 = PFRULE_RETURNICMP; 3116 $$.w = returnicmpdefault; 3117 $$.w2 = returnicmp6default; 3118 } 3119 | RETURNICMP6 { 3120 $$.b2 = PFRULE_RETURNICMP; 3121 $$.w = returnicmpdefault; 3122 $$.w2 = returnicmp6default; 3123 } 3124 | RETURNICMP '(' reticmpspec ')' { 3125 $$.b2 = PFRULE_RETURNICMP; 3126 $$.w = $3; 3127 $$.w2 = returnicmpdefault; 3128 } 3129 | RETURNICMP6 '(' reticmp6spec ')' { 3130 $$.b2 = PFRULE_RETURNICMP; 3131 $$.w = returnicmpdefault; 3132 $$.w2 = $3; 3133 } 3134 | RETURNICMP '(' reticmpspec comma reticmp6spec ')' { 3135 $$.b2 = PFRULE_RETURNICMP; 3136 $$.w = $3; 3137 $$.w2 = $5; 3138 } 3139 | RETURN { 3140 $$.b2 = PFRULE_RETURN; 3141 $$.w = returnicmpdefault; 3142 $$.w2 = returnicmp6default; 3143 } 3144 ; 3145 3146 reticmpspec : STRING { 3147 if (!($$ = parseicmpspec($1, AF_INET))) { 3148 free($1); 3149 YYERROR; 3150 } 3151 free($1); 3152 } 3153 | NUMBER { 3154 u_int8_t icmptype; 3155 3156 if ($1 < 0 || $1 > 255) { 3157 yyerror("invalid icmp code %lu", $1); 3158 YYERROR; 3159 } 3160 icmptype = returnicmpdefault >> 8; 3161 $$ = (icmptype << 8 | $1); 3162 } 3163 ; 3164 3165 reticmp6spec : STRING { 3166 if (!($$ = parseicmpspec($1, AF_INET6))) { 3167 free($1); 3168 YYERROR; 3169 } 3170 free($1); 3171 } 3172 | NUMBER { 3173 u_int8_t icmptype; 3174 3175 if ($1 < 0 || $1 > 255) { 3176 yyerror("invalid icmp code %lu", $1); 3177 YYERROR; 3178 } 3179 icmptype = returnicmp6default >> 8; 3180 $$ = (icmptype << 8 | $1); 3181 } 3182 ; 3183 3184 dir : /* empty */ { $$ = PF_INOUT; } 3185 | IN { $$ = PF_IN; } 3186 | OUT { $$ = PF_OUT; } 3187 ; 3188 3189 quick : /* empty */ { $$.quick = 0; } 3190 | QUICK { $$.quick = 1; } 3191 ; 3192 3193 logquick : /* empty */ { $$.log = 0; $$.quick = 0; $$.logif = 0; } 3194 | log { $$ = $1; $$.quick = 0; } 3195 | QUICK { $$.quick = 1; $$.log = 0; $$.logif = 0; } 3196 | log QUICK { $$ = $1; $$.quick = 1; } 3197 | QUICK log { $$ = $2; $$.quick = 1; } 3198 ; 3199 3200 log : LOG { $$.log = PF_LOG; $$.logif = 0; } 3201 | LOG '(' logopts ')' { 3202 $$.log = PF_LOG | $3.log; 3203 $$.logif = $3.logif; 3204 } 3205 ; 3206 3207 logopts : logopt { $$ = $1; } 3208 | logopts comma logopt { 3209 $$.log = $1.log | $3.log; 3210 $$.logif = $3.logif; 3211 if ($$.logif == 0) 3212 $$.logif = $1.logif; 3213 } 3214 ; 3215 3216 logopt : ALL { $$.log = PF_LOG_ALL; $$.logif = 0; } 3217 | USER { $$.log = PF_LOG_SOCKET_LOOKUP; $$.logif = 0; } 3218 | GROUP { $$.log = PF_LOG_SOCKET_LOOKUP; $$.logif = 0; } 3219 | TO string { 3220 const char *errstr; 3221 u_int i; 3222 3223 $$.log = 0; 3224 if (strncmp($2, "pflog", 5)) { 3225 yyerror("%s: should be a pflog interface", $2); 3226 free($2); 3227 YYERROR; 3228 } 3229 i = strtonum($2 + 5, 0, 255, &errstr); 3230 if (errstr) { 3231 yyerror("%s: %s", $2, errstr); 3232 free($2); 3233 YYERROR; 3234 } 3235 free($2); 3236 $$.logif = i; 3237 } 3238 ; 3239 3240 interface : /* empty */ { $$ = NULL; } 3241 | ON if_item_not { $$ = $2; } 3242 | ON '{' optnl if_list '}' { $$ = $4; } 3243 ; 3244 3245 if_list : if_item_not optnl { $$ = $1; } 3246 | if_list comma if_item_not optnl { 3247 $1->tail->next = $3; 3248 $1->tail = $3; 3249 $$ = $1; 3250 } 3251 ; 3252 3253 if_item_not : not if_item { $$ = $2; $$->not = $1; } 3254 ; 3255 3256 if_item : STRING { 3257 struct node_host *n; 3258 3259 $$ = calloc(1, sizeof(struct node_if)); 3260 if ($$ == NULL) 3261 err(1, "if_item: calloc"); 3262 if (strlcpy($$->ifname, $1, sizeof($$->ifname)) >= 3263 sizeof($$->ifname)) { 3264 free($1); 3265 free($$); 3266 yyerror("interface name too long"); 3267 YYERROR; 3268 } 3269 3270 if ((n = ifa_exists($1)) != NULL) 3271 $$->ifa_flags = n->ifa_flags; 3272 3273 free($1); 3274 $$->not = 0; 3275 $$->next = NULL; 3276 $$->tail = $$; 3277 } 3278 ; 3279 3280 af : /* empty */ { $$ = 0; } 3281 | INET { $$ = AF_INET; } 3282 | INET6 { $$ = AF_INET6; } 3283 ; 3284 3285 etherproto : /* empty */ { $$ = NULL; } 3286 | PROTO etherproto_item { $$ = $2; } 3287 | PROTO '{' optnl etherproto_list '}' { $$ = $4; } 3288 ; 3289 3290 etherproto_list : etherproto_item optnl { $$ = $1; } 3291 | etherproto_list comma etherproto_item optnl { 3292 $1->tail->next = $3; 3293 $1->tail = $3; 3294 $$ = $1; 3295 } 3296 ; 3297 3298 etherproto_item : etherprotoval { 3299 u_int16_t pr; 3300 3301 pr = (u_int16_t)$1; 3302 if (pr == 0) { 3303 yyerror("proto 0 cannot be used"); 3304 YYERROR; 3305 } 3306 $$ = calloc(1, sizeof(struct node_proto)); 3307 if ($$ == NULL) 3308 err(1, "proto_item: calloc"); 3309 $$->proto = pr; 3310 $$->next = NULL; 3311 $$->tail = $$; 3312 } 3313 ; 3314 3315 etherprotoval : NUMBER { 3316 if ($1 < 0 || $1 > 65565) { 3317 yyerror("protocol outside range"); 3318 YYERROR; 3319 } 3320 } 3321 | STRING 3322 { 3323 if (!strncmp($1, "0x", 2)) { 3324 if (sscanf($1, "0x%4x", &$$) != 1) { 3325 free($1); 3326 yyerror("invalid EtherType hex"); 3327 YYERROR; 3328 } 3329 } else { 3330 yyerror("Symbolic EtherType not yet supported"); 3331 } 3332 } 3333 ; 3334 3335 proto : /* empty */ { $$ = NULL; } 3336 | PROTO proto_item { $$ = $2; } 3337 | PROTO '{' optnl proto_list '}' { $$ = $4; } 3338 ; 3339 3340 proto_list : proto_item optnl { $$ = $1; } 3341 | proto_list comma proto_item optnl { 3342 $1->tail->next = $3; 3343 $1->tail = $3; 3344 $$ = $1; 3345 } 3346 ; 3347 3348 proto_item : protoval { 3349 u_int8_t pr; 3350 3351 pr = (u_int8_t)$1; 3352 if (pr == 0) { 3353 yyerror("proto 0 cannot be used"); 3354 YYERROR; 3355 } 3356 $$ = calloc(1, sizeof(struct node_proto)); 3357 if ($$ == NULL) 3358 err(1, "proto_item: calloc"); 3359 $$->proto = pr; 3360 $$->next = NULL; 3361 $$->tail = $$; 3362 } 3363 ; 3364 3365 protoval : STRING { 3366 struct protoent *p; 3367 3368 p = getprotobyname($1); 3369 if (p == NULL) { 3370 yyerror("unknown protocol %s", $1); 3371 free($1); 3372 YYERROR; 3373 } 3374 $$ = p->p_proto; 3375 free($1); 3376 } 3377 | NUMBER { 3378 if ($1 < 0 || $1 > 255) { 3379 yyerror("protocol outside range"); 3380 YYERROR; 3381 } 3382 } 3383 ; 3384 3385 l3fromto : /* empty */ { 3386 bzero(&$$, sizeof($$)); 3387 } 3388 | L3 fromto { 3389 if ($2.src.host != NULL && 3390 $2.src.host->addr.type != PF_ADDR_ADDRMASK && 3391 $2.src.host->addr.type != PF_ADDR_TABLE) { 3392 yyerror("from must be an address or table"); 3393 YYERROR; 3394 } 3395 if ($2.dst.host != NULL && 3396 $2.dst.host->addr.type != PF_ADDR_ADDRMASK && 3397 $2.dst.host->addr.type != PF_ADDR_TABLE) { 3398 yyerror("to must be an address or table"); 3399 YYERROR; 3400 } 3401 $$ = $2; 3402 } 3403 ; 3404 etherfromto : ALL { 3405 $$.src = NULL; 3406 $$.dst = NULL; 3407 } 3408 | etherfrom etherto { 3409 $$.src = $1.mac; 3410 $$.dst = $2.mac; 3411 } 3412 ; 3413 3414 etherfrom : /* emtpy */ { 3415 bzero(&$$, sizeof($$)); 3416 } 3417 | FROM macspec { 3418 $$.mac = $2; 3419 } 3420 ; 3421 3422 etherto : /* empty */ { 3423 bzero(&$$, sizeof($$)); 3424 } 3425 | TO macspec { 3426 $$.mac = $2; 3427 } 3428 ; 3429 3430 mac : string '/' NUMBER { 3431 $$ = node_mac_from_string_masklen($1, $3); 3432 free($1); 3433 if ($$ == NULL) 3434 YYERROR; 3435 } 3436 | string { 3437 if (strchr($1, '&')) { 3438 /* mac&mask */ 3439 char *mac = strtok($1, "&"); 3440 char *mask = strtok(NULL, "&"); 3441 $$ = node_mac_from_string_mask(mac, mask); 3442 } else { 3443 $$ = node_mac_from_string($1); 3444 } 3445 free($1); 3446 if ($$ == NULL) 3447 YYERROR; 3448 3449 } 3450 xmac : not mac { 3451 struct node_mac *n; 3452 3453 for (n = $2; n != NULL; n = n->next) 3454 n->neg = $1; 3455 $$ = $2; 3456 } 3457 ; 3458 macspec : xmac { 3459 $$ = $1; 3460 } 3461 | '{' optnl mac_list '}' 3462 { 3463 $$ = $3; 3464 } 3465 ; 3466 mac_list : xmac optnl { 3467 $$ = $1; 3468 } 3469 | mac_list comma xmac { 3470 if ($3 == NULL) 3471 $$ = $1; 3472 else if ($1 == NULL) 3473 $$ = $3; 3474 else { 3475 $1->tail->next = $3; 3476 $1->tail = $3->tail; 3477 $$ = $1; 3478 } 3479 } 3480 3481 fromto : ALL { 3482 $$.src.host = NULL; 3483 $$.src.port = NULL; 3484 $$.dst.host = NULL; 3485 $$.dst.port = NULL; 3486 $$.src_os = NULL; 3487 } 3488 | from os to { 3489 $$.src = $1; 3490 $$.src_os = $2; 3491 $$.dst = $3; 3492 } 3493 ; 3494 3495 os : /* empty */ { $$ = NULL; } 3496 | OS xos { $$ = $2; } 3497 | OS '{' optnl os_list '}' { $$ = $4; } 3498 ; 3499 3500 xos : STRING { 3501 $$ = calloc(1, sizeof(struct node_os)); 3502 if ($$ == NULL) 3503 err(1, "os: calloc"); 3504 $$->os = $1; 3505 $$->tail = $$; 3506 } 3507 ; 3508 3509 os_list : xos optnl { $$ = $1; } 3510 | os_list comma xos optnl { 3511 $1->tail->next = $3; 3512 $1->tail = $3; 3513 $$ = $1; 3514 } 3515 ; 3516 3517 from : /* empty */ { 3518 $$.host = NULL; 3519 $$.port = NULL; 3520 } 3521 | FROM ipportspec { 3522 $$ = $2; 3523 } 3524 ; 3525 3526 to : /* empty */ { 3527 $$.host = NULL; 3528 $$.port = NULL; 3529 } 3530 | TO ipportspec { 3531 if (disallow_urpf_failed($2.host, "\"urpf-failed\" is " 3532 "not permitted in a destination address")) 3533 YYERROR; 3534 $$ = $2; 3535 } 3536 ; 3537 3538 ipportspec : ipspec { 3539 $$.host = $1; 3540 $$.port = NULL; 3541 } 3542 | ipspec PORT portspec { 3543 $$.host = $1; 3544 $$.port = $3; 3545 } 3546 | PORT portspec { 3547 $$.host = NULL; 3548 $$.port = $2; 3549 } 3550 ; 3551 3552 optnl : '\n' optnl 3553 | 3554 ; 3555 3556 ipspec : ANY { $$ = NULL; } 3557 | xhost { $$ = $1; } 3558 | '{' optnl host_list '}' { $$ = $3; } 3559 ; 3560 3561 toipspec : TO ipspec { $$ = $2; } 3562 | /* empty */ { $$ = NULL; } 3563 ; 3564 3565 host_list : ipspec optnl { $$ = $1; } 3566 | host_list comma ipspec optnl { 3567 if ($3 == NULL) 3568 $$ = $1; 3569 else if ($1 == NULL) 3570 $$ = $3; 3571 else { 3572 $1->tail->next = $3; 3573 $1->tail = $3->tail; 3574 $$ = $1; 3575 } 3576 } 3577 ; 3578 3579 xhost : not host { 3580 struct node_host *n; 3581 3582 for (n = $2; n != NULL; n = n->next) 3583 n->not = $1; 3584 $$ = $2; 3585 } 3586 | not NOROUTE { 3587 $$ = calloc(1, sizeof(struct node_host)); 3588 if ($$ == NULL) 3589 err(1, "xhost: calloc"); 3590 $$->addr.type = PF_ADDR_NOROUTE; 3591 $$->next = NULL; 3592 $$->not = $1; 3593 $$->tail = $$; 3594 } 3595 | not URPFFAILED { 3596 $$ = calloc(1, sizeof(struct node_host)); 3597 if ($$ == NULL) 3598 err(1, "xhost: calloc"); 3599 $$->addr.type = PF_ADDR_URPFFAILED; 3600 $$->next = NULL; 3601 $$->not = $1; 3602 $$->tail = $$; 3603 } 3604 ; 3605 3606 host : STRING { 3607 if (($$ = host($1)) == NULL) { 3608 /* error. "any" is handled elsewhere */ 3609 free($1); 3610 yyerror("could not parse host specification"); 3611 YYERROR; 3612 } 3613 free($1); 3614 3615 } 3616 | STRING '-' STRING { 3617 struct node_host *b, *e; 3618 3619 if ((b = host($1)) == NULL || (e = host($3)) == NULL) { 3620 free($1); 3621 free($3); 3622 yyerror("could not parse host specification"); 3623 YYERROR; 3624 } 3625 if (b->af != e->af || 3626 b->addr.type != PF_ADDR_ADDRMASK || 3627 e->addr.type != PF_ADDR_ADDRMASK || 3628 unmask(&b->addr.v.a.mask, b->af) != 3629 (b->af == AF_INET ? 32 : 128) || 3630 unmask(&e->addr.v.a.mask, e->af) != 3631 (e->af == AF_INET ? 32 : 128) || 3632 b->next != NULL || b->not || 3633 e->next != NULL || e->not) { 3634 free(b); 3635 free(e); 3636 free($1); 3637 free($3); 3638 yyerror("invalid address range"); 3639 YYERROR; 3640 } 3641 memcpy(&b->addr.v.a.mask, &e->addr.v.a.addr, 3642 sizeof(b->addr.v.a.mask)); 3643 b->addr.type = PF_ADDR_RANGE; 3644 $$ = b; 3645 free(e); 3646 free($1); 3647 free($3); 3648 } 3649 | STRING '/' NUMBER { 3650 char *buf; 3651 3652 if (asprintf(&buf, "%s/%lld", $1, (long long)$3) == -1) 3653 err(1, "host: asprintf"); 3654 free($1); 3655 if (($$ = host(buf)) == NULL) { 3656 /* error. "any" is handled elsewhere */ 3657 free(buf); 3658 yyerror("could not parse host specification"); 3659 YYERROR; 3660 } 3661 free(buf); 3662 } 3663 | NUMBER '/' NUMBER { 3664 char *buf; 3665 3666 /* ie. for 10/8 parsing */ 3667 #ifdef __FreeBSD__ 3668 if (asprintf(&buf, "%lld/%lld", (long long)$1, (long long)$3) == -1) 3669 #else 3670 if (asprintf(&buf, "%lld/%lld", $1, $3) == -1) 3671 #endif 3672 err(1, "host: asprintf"); 3673 if (($$ = host(buf)) == NULL) { 3674 /* error. "any" is handled elsewhere */ 3675 free(buf); 3676 yyerror("could not parse host specification"); 3677 YYERROR; 3678 } 3679 free(buf); 3680 } 3681 | dynaddr 3682 | dynaddr '/' NUMBER { 3683 struct node_host *n; 3684 3685 if ($3 < 0 || $3 > 128) { 3686 yyerror("bit number too big"); 3687 YYERROR; 3688 } 3689 $$ = $1; 3690 for (n = $1; n != NULL; n = n->next) 3691 set_ipmask(n, $3); 3692 } 3693 | '<' STRING '>' { 3694 if (strlen($2) >= PF_TABLE_NAME_SIZE) { 3695 yyerror("table name '%s' too long", $2); 3696 free($2); 3697 YYERROR; 3698 } 3699 $$ = calloc(1, sizeof(struct node_host)); 3700 if ($$ == NULL) 3701 err(1, "host: calloc"); 3702 $$->addr.type = PF_ADDR_TABLE; 3703 if (strlcpy($$->addr.v.tblname, $2, 3704 sizeof($$->addr.v.tblname)) >= 3705 sizeof($$->addr.v.tblname)) 3706 errx(1, "host: strlcpy"); 3707 free($2); 3708 $$->next = NULL; 3709 $$->tail = $$; 3710 } 3711 ; 3712 3713 number : NUMBER 3714 | STRING { 3715 u_long ulval; 3716 3717 if (atoul($1, &ulval) == -1) { 3718 yyerror("%s is not a number", $1); 3719 free($1); 3720 YYERROR; 3721 } else 3722 $$ = ulval; 3723 free($1); 3724 } 3725 ; 3726 3727 dynaddr : '(' STRING ')' { 3728 int flags = 0; 3729 char *p, *op; 3730 3731 op = $2; 3732 if (!isalpha(op[0])) { 3733 yyerror("invalid interface name '%s'", op); 3734 free(op); 3735 YYERROR; 3736 } 3737 while ((p = strrchr($2, ':')) != NULL) { 3738 if (!strcmp(p+1, "network")) 3739 flags |= PFI_AFLAG_NETWORK; 3740 else if (!strcmp(p+1, "broadcast")) 3741 flags |= PFI_AFLAG_BROADCAST; 3742 else if (!strcmp(p+1, "peer")) 3743 flags |= PFI_AFLAG_PEER; 3744 else if (!strcmp(p+1, "0")) 3745 flags |= PFI_AFLAG_NOALIAS; 3746 else { 3747 yyerror("interface %s has bad modifier", 3748 $2); 3749 free(op); 3750 YYERROR; 3751 } 3752 *p = '\0'; 3753 } 3754 if (flags & (flags - 1) & PFI_AFLAG_MODEMASK) { 3755 free(op); 3756 yyerror("illegal combination of " 3757 "interface modifiers"); 3758 YYERROR; 3759 } 3760 $$ = calloc(1, sizeof(struct node_host)); 3761 if ($$ == NULL) 3762 err(1, "address: calloc"); 3763 $$->af = 0; 3764 set_ipmask($$, 128); 3765 $$->addr.type = PF_ADDR_DYNIFTL; 3766 $$->addr.iflags = flags; 3767 if (strlcpy($$->addr.v.ifname, $2, 3768 sizeof($$->addr.v.ifname)) >= 3769 sizeof($$->addr.v.ifname)) { 3770 free(op); 3771 free($$); 3772 yyerror("interface name too long"); 3773 YYERROR; 3774 } 3775 free(op); 3776 $$->next = NULL; 3777 $$->tail = $$; 3778 } 3779 ; 3780 3781 portspec : port_item { $$ = $1; } 3782 | '{' optnl port_list '}' { $$ = $3; } 3783 ; 3784 3785 port_list : port_item optnl { $$ = $1; } 3786 | port_list comma port_item optnl { 3787 $1->tail->next = $3; 3788 $1->tail = $3; 3789 $$ = $1; 3790 } 3791 ; 3792 3793 port_item : portrange { 3794 $$ = calloc(1, sizeof(struct node_port)); 3795 if ($$ == NULL) 3796 err(1, "port_item: calloc"); 3797 $$->port[0] = $1.a; 3798 $$->port[1] = $1.b; 3799 if ($1.t) 3800 $$->op = PF_OP_RRG; 3801 else 3802 $$->op = PF_OP_EQ; 3803 $$->next = NULL; 3804 $$->tail = $$; 3805 } 3806 | unaryop portrange { 3807 if ($2.t) { 3808 yyerror("':' cannot be used with an other " 3809 "port operator"); 3810 YYERROR; 3811 } 3812 $$ = calloc(1, sizeof(struct node_port)); 3813 if ($$ == NULL) 3814 err(1, "port_item: calloc"); 3815 $$->port[0] = $2.a; 3816 $$->port[1] = $2.b; 3817 $$->op = $1; 3818 $$->next = NULL; 3819 $$->tail = $$; 3820 } 3821 | portrange PORTBINARY portrange { 3822 if ($1.t || $3.t) { 3823 yyerror("':' cannot be used with an other " 3824 "port operator"); 3825 YYERROR; 3826 } 3827 $$ = calloc(1, sizeof(struct node_port)); 3828 if ($$ == NULL) 3829 err(1, "port_item: calloc"); 3830 $$->port[0] = $1.a; 3831 $$->port[1] = $3.a; 3832 $$->op = $2; 3833 $$->next = NULL; 3834 $$->tail = $$; 3835 } 3836 ; 3837 3838 portplain : numberstring { 3839 if (parseport($1, &$$, 0) == -1) { 3840 free($1); 3841 YYERROR; 3842 } 3843 free($1); 3844 } 3845 ; 3846 3847 portrange : numberstring { 3848 if (parseport($1, &$$, PPORT_RANGE) == -1) { 3849 free($1); 3850 YYERROR; 3851 } 3852 free($1); 3853 } 3854 ; 3855 3856 uids : uid_item { $$ = $1; } 3857 | '{' optnl uid_list '}' { $$ = $3; } 3858 ; 3859 3860 uid_list : uid_item optnl { $$ = $1; } 3861 | uid_list comma uid_item optnl { 3862 $1->tail->next = $3; 3863 $1->tail = $3; 3864 $$ = $1; 3865 } 3866 ; 3867 3868 uid_item : uid { 3869 $$ = calloc(1, sizeof(struct node_uid)); 3870 if ($$ == NULL) 3871 err(1, "uid_item: calloc"); 3872 $$->uid[0] = $1; 3873 $$->uid[1] = $1; 3874 $$->op = PF_OP_EQ; 3875 $$->next = NULL; 3876 $$->tail = $$; 3877 } 3878 | unaryop uid { 3879 if ($2 == UID_MAX && $1 != PF_OP_EQ && $1 != PF_OP_NE) { 3880 yyerror("user unknown requires operator = or " 3881 "!="); 3882 YYERROR; 3883 } 3884 $$ = calloc(1, sizeof(struct node_uid)); 3885 if ($$ == NULL) 3886 err(1, "uid_item: calloc"); 3887 $$->uid[0] = $2; 3888 $$->uid[1] = $2; 3889 $$->op = $1; 3890 $$->next = NULL; 3891 $$->tail = $$; 3892 } 3893 | uid PORTBINARY uid { 3894 if ($1 == UID_MAX || $3 == UID_MAX) { 3895 yyerror("user unknown requires operator = or " 3896 "!="); 3897 YYERROR; 3898 } 3899 $$ = calloc(1, sizeof(struct node_uid)); 3900 if ($$ == NULL) 3901 err(1, "uid_item: calloc"); 3902 $$->uid[0] = $1; 3903 $$->uid[1] = $3; 3904 $$->op = $2; 3905 $$->next = NULL; 3906 $$->tail = $$; 3907 } 3908 ; 3909 3910 uid : STRING { 3911 if (!strcmp($1, "unknown")) 3912 $$ = UID_MAX; 3913 else { 3914 struct passwd *pw; 3915 3916 if ((pw = getpwnam($1)) == NULL) { 3917 yyerror("unknown user %s", $1); 3918 free($1); 3919 YYERROR; 3920 } 3921 $$ = pw->pw_uid; 3922 } 3923 free($1); 3924 } 3925 | NUMBER { 3926 if ($1 < 0 || $1 >= UID_MAX) { 3927 yyerror("illegal uid value %lu", $1); 3928 YYERROR; 3929 } 3930 $$ = $1; 3931 } 3932 ; 3933 3934 gids : gid_item { $$ = $1; } 3935 | '{' optnl gid_list '}' { $$ = $3; } 3936 ; 3937 3938 gid_list : gid_item optnl { $$ = $1; } 3939 | gid_list comma gid_item optnl { 3940 $1->tail->next = $3; 3941 $1->tail = $3; 3942 $$ = $1; 3943 } 3944 ; 3945 3946 gid_item : gid { 3947 $$ = calloc(1, sizeof(struct node_gid)); 3948 if ($$ == NULL) 3949 err(1, "gid_item: calloc"); 3950 $$->gid[0] = $1; 3951 $$->gid[1] = $1; 3952 $$->op = PF_OP_EQ; 3953 $$->next = NULL; 3954 $$->tail = $$; 3955 } 3956 | unaryop gid { 3957 if ($2 == GID_MAX && $1 != PF_OP_EQ && $1 != PF_OP_NE) { 3958 yyerror("group unknown requires operator = or " 3959 "!="); 3960 YYERROR; 3961 } 3962 $$ = calloc(1, sizeof(struct node_gid)); 3963 if ($$ == NULL) 3964 err(1, "gid_item: calloc"); 3965 $$->gid[0] = $2; 3966 $$->gid[1] = $2; 3967 $$->op = $1; 3968 $$->next = NULL; 3969 $$->tail = $$; 3970 } 3971 | gid PORTBINARY gid { 3972 if ($1 == GID_MAX || $3 == GID_MAX) { 3973 yyerror("group unknown requires operator = or " 3974 "!="); 3975 YYERROR; 3976 } 3977 $$ = calloc(1, sizeof(struct node_gid)); 3978 if ($$ == NULL) 3979 err(1, "gid_item: calloc"); 3980 $$->gid[0] = $1; 3981 $$->gid[1] = $3; 3982 $$->op = $2; 3983 $$->next = NULL; 3984 $$->tail = $$; 3985 } 3986 ; 3987 3988 gid : STRING { 3989 if (!strcmp($1, "unknown")) 3990 $$ = GID_MAX; 3991 else { 3992 struct group *grp; 3993 3994 if ((grp = getgrnam($1)) == NULL) { 3995 yyerror("unknown group %s", $1); 3996 free($1); 3997 YYERROR; 3998 } 3999 $$ = grp->gr_gid; 4000 } 4001 free($1); 4002 } 4003 | NUMBER { 4004 if ($1 < 0 || $1 >= GID_MAX) { 4005 yyerror("illegal gid value %lu", $1); 4006 YYERROR; 4007 } 4008 $$ = $1; 4009 } 4010 ; 4011 4012 flag : STRING { 4013 int f; 4014 4015 if ((f = parse_flags($1)) < 0) { 4016 yyerror("bad flags %s", $1); 4017 free($1); 4018 YYERROR; 4019 } 4020 free($1); 4021 $$.b1 = f; 4022 } 4023 ; 4024 4025 flags : FLAGS flag '/' flag { $$.b1 = $2.b1; $$.b2 = $4.b1; } 4026 | FLAGS '/' flag { $$.b1 = 0; $$.b2 = $3.b1; } 4027 | FLAGS ANY { $$.b1 = 0; $$.b2 = 0; } 4028 ; 4029 4030 icmpspec : ICMPTYPE icmp_item { $$ = $2; } 4031 | ICMPTYPE '{' optnl icmp_list '}' { $$ = $4; } 4032 | ICMP6TYPE icmp6_item { $$ = $2; } 4033 | ICMP6TYPE '{' optnl icmp6_list '}' { $$ = $4; } 4034 ; 4035 4036 icmp_list : icmp_item optnl { $$ = $1; } 4037 | icmp_list comma icmp_item optnl { 4038 $1->tail->next = $3; 4039 $1->tail = $3; 4040 $$ = $1; 4041 } 4042 ; 4043 4044 icmp6_list : icmp6_item optnl { $$ = $1; } 4045 | icmp6_list comma icmp6_item optnl { 4046 $1->tail->next = $3; 4047 $1->tail = $3; 4048 $$ = $1; 4049 } 4050 ; 4051 4052 icmp_item : icmptype { 4053 $$ = calloc(1, sizeof(struct node_icmp)); 4054 if ($$ == NULL) 4055 err(1, "icmp_item: calloc"); 4056 $$->type = $1; 4057 $$->code = 0; 4058 $$->proto = IPPROTO_ICMP; 4059 $$->next = NULL; 4060 $$->tail = $$; 4061 } 4062 | icmptype CODE STRING { 4063 const struct icmpcodeent *p; 4064 4065 if ((p = geticmpcodebyname($1-1, $3, AF_INET)) == NULL) { 4066 yyerror("unknown icmp-code %s", $3); 4067 free($3); 4068 YYERROR; 4069 } 4070 4071 free($3); 4072 $$ = calloc(1, sizeof(struct node_icmp)); 4073 if ($$ == NULL) 4074 err(1, "icmp_item: calloc"); 4075 $$->type = $1; 4076 $$->code = p->code + 1; 4077 $$->proto = IPPROTO_ICMP; 4078 $$->next = NULL; 4079 $$->tail = $$; 4080 } 4081 | icmptype CODE NUMBER { 4082 if ($3 < 0 || $3 > 255) { 4083 yyerror("illegal icmp-code %lu", $3); 4084 YYERROR; 4085 } 4086 $$ = calloc(1, sizeof(struct node_icmp)); 4087 if ($$ == NULL) 4088 err(1, "icmp_item: calloc"); 4089 $$->type = $1; 4090 $$->code = $3 + 1; 4091 $$->proto = IPPROTO_ICMP; 4092 $$->next = NULL; 4093 $$->tail = $$; 4094 } 4095 ; 4096 4097 icmp6_item : icmp6type { 4098 $$ = calloc(1, sizeof(struct node_icmp)); 4099 if ($$ == NULL) 4100 err(1, "icmp_item: calloc"); 4101 $$->type = $1; 4102 $$->code = 0; 4103 $$->proto = IPPROTO_ICMPV6; 4104 $$->next = NULL; 4105 $$->tail = $$; 4106 } 4107 | icmp6type CODE STRING { 4108 const struct icmpcodeent *p; 4109 4110 if ((p = geticmpcodebyname($1-1, $3, AF_INET6)) == NULL) { 4111 yyerror("unknown icmp6-code %s", $3); 4112 free($3); 4113 YYERROR; 4114 } 4115 free($3); 4116 4117 $$ = calloc(1, sizeof(struct node_icmp)); 4118 if ($$ == NULL) 4119 err(1, "icmp_item: calloc"); 4120 $$->type = $1; 4121 $$->code = p->code + 1; 4122 $$->proto = IPPROTO_ICMPV6; 4123 $$->next = NULL; 4124 $$->tail = $$; 4125 } 4126 | icmp6type CODE NUMBER { 4127 if ($3 < 0 || $3 > 255) { 4128 yyerror("illegal icmp-code %lu", $3); 4129 YYERROR; 4130 } 4131 $$ = calloc(1, sizeof(struct node_icmp)); 4132 if ($$ == NULL) 4133 err(1, "icmp_item: calloc"); 4134 $$->type = $1; 4135 $$->code = $3 + 1; 4136 $$->proto = IPPROTO_ICMPV6; 4137 $$->next = NULL; 4138 $$->tail = $$; 4139 } 4140 ; 4141 4142 icmptype : STRING { 4143 const struct icmptypeent *p; 4144 4145 if ((p = geticmptypebyname($1, AF_INET)) == NULL) { 4146 yyerror("unknown icmp-type %s", $1); 4147 free($1); 4148 YYERROR; 4149 } 4150 $$ = p->type + 1; 4151 free($1); 4152 } 4153 | NUMBER { 4154 if ($1 < 0 || $1 > 255) { 4155 yyerror("illegal icmp-type %lu", $1); 4156 YYERROR; 4157 } 4158 $$ = $1 + 1; 4159 } 4160 ; 4161 4162 icmp6type : STRING { 4163 const struct icmptypeent *p; 4164 4165 if ((p = geticmptypebyname($1, AF_INET6)) == 4166 NULL) { 4167 yyerror("unknown icmp6-type %s", $1); 4168 free($1); 4169 YYERROR; 4170 } 4171 $$ = p->type + 1; 4172 free($1); 4173 } 4174 | NUMBER { 4175 if ($1 < 0 || $1 > 255) { 4176 yyerror("illegal icmp6-type %lu", $1); 4177 YYERROR; 4178 } 4179 $$ = $1 + 1; 4180 } 4181 ; 4182 4183 tos : STRING { 4184 int val; 4185 char *end; 4186 4187 if (map_tos($1, &val)) 4188 $$ = val; 4189 else if ($1[0] == '0' && $1[1] == 'x') { 4190 errno = 0; 4191 $$ = strtoul($1, &end, 16); 4192 if (errno || *end != '\0') 4193 $$ = 256; 4194 } else 4195 $$ = 256; /* flag bad argument */ 4196 if ($$ < 0 || $$ > 255) { 4197 yyerror("illegal tos value %s", $1); 4198 free($1); 4199 YYERROR; 4200 } 4201 free($1); 4202 } 4203 | NUMBER { 4204 $$ = $1; 4205 if ($$ < 0 || $$ > 255) { 4206 yyerror("illegal tos value %s", $1); 4207 YYERROR; 4208 } 4209 } 4210 ; 4211 4212 sourcetrack : SOURCETRACK { $$ = PF_SRCTRACK; } 4213 | SOURCETRACK GLOBAL { $$ = PF_SRCTRACK_GLOBAL; } 4214 | SOURCETRACK RULE { $$ = PF_SRCTRACK_RULE; } 4215 ; 4216 4217 statelock : IFBOUND { 4218 $$ = PFRULE_IFBOUND; 4219 } 4220 | FLOATING { 4221 $$ = 0; 4222 } 4223 ; 4224 4225 keep : NO STATE { 4226 $$.action = 0; 4227 $$.options = NULL; 4228 } 4229 | KEEP STATE state_opt_spec { 4230 $$.action = PF_STATE_NORMAL; 4231 $$.options = $3; 4232 } 4233 | MODULATE STATE state_opt_spec { 4234 $$.action = PF_STATE_MODULATE; 4235 $$.options = $3; 4236 } 4237 | SYNPROXY STATE state_opt_spec { 4238 $$.action = PF_STATE_SYNPROXY; 4239 $$.options = $3; 4240 } 4241 ; 4242 4243 flush : /* empty */ { $$ = 0; } 4244 | FLUSH { $$ = PF_FLUSH; } 4245 | FLUSH GLOBAL { 4246 $$ = PF_FLUSH | PF_FLUSH_GLOBAL; 4247 } 4248 ; 4249 4250 state_opt_spec : '(' state_opt_list ')' { $$ = $2; } 4251 | /* empty */ { $$ = NULL; } 4252 ; 4253 4254 state_opt_list : state_opt_item { $$ = $1; } 4255 | state_opt_list comma state_opt_item { 4256 $1->tail->next = $3; 4257 $1->tail = $3; 4258 $$ = $1; 4259 } 4260 ; 4261 4262 state_opt_item : MAXIMUM NUMBER { 4263 if ($2 < 0 || $2 > UINT_MAX) { 4264 yyerror("only positive values permitted"); 4265 YYERROR; 4266 } 4267 $$ = calloc(1, sizeof(struct node_state_opt)); 4268 if ($$ == NULL) 4269 err(1, "state_opt_item: calloc"); 4270 $$->type = PF_STATE_OPT_MAX; 4271 $$->data.max_states = $2; 4272 $$->next = NULL; 4273 $$->tail = $$; 4274 } 4275 | NOSYNC { 4276 $$ = calloc(1, sizeof(struct node_state_opt)); 4277 if ($$ == NULL) 4278 err(1, "state_opt_item: calloc"); 4279 $$->type = PF_STATE_OPT_NOSYNC; 4280 $$->next = NULL; 4281 $$->tail = $$; 4282 } 4283 | MAXSRCSTATES NUMBER { 4284 if ($2 < 0 || $2 > UINT_MAX) { 4285 yyerror("only positive values permitted"); 4286 YYERROR; 4287 } 4288 $$ = calloc(1, sizeof(struct node_state_opt)); 4289 if ($$ == NULL) 4290 err(1, "state_opt_item: calloc"); 4291 $$->type = PF_STATE_OPT_MAX_SRC_STATES; 4292 $$->data.max_src_states = $2; 4293 $$->next = NULL; 4294 $$->tail = $$; 4295 } 4296 | MAXSRCCONN NUMBER { 4297 if ($2 < 0 || $2 > UINT_MAX) { 4298 yyerror("only positive values permitted"); 4299 YYERROR; 4300 } 4301 $$ = calloc(1, sizeof(struct node_state_opt)); 4302 if ($$ == NULL) 4303 err(1, "state_opt_item: calloc"); 4304 $$->type = PF_STATE_OPT_MAX_SRC_CONN; 4305 $$->data.max_src_conn = $2; 4306 $$->next = NULL; 4307 $$->tail = $$; 4308 } 4309 | MAXSRCCONNRATE NUMBER '/' NUMBER { 4310 if ($2 < 0 || $2 > UINT_MAX || 4311 $4 < 0 || $4 > UINT_MAX) { 4312 yyerror("only positive values permitted"); 4313 YYERROR; 4314 } 4315 $$ = calloc(1, sizeof(struct node_state_opt)); 4316 if ($$ == NULL) 4317 err(1, "state_opt_item: calloc"); 4318 $$->type = PF_STATE_OPT_MAX_SRC_CONN_RATE; 4319 $$->data.max_src_conn_rate.limit = $2; 4320 $$->data.max_src_conn_rate.seconds = $4; 4321 $$->next = NULL; 4322 $$->tail = $$; 4323 } 4324 | OVERLOAD '<' STRING '>' flush { 4325 if (strlen($3) >= PF_TABLE_NAME_SIZE) { 4326 yyerror("table name '%s' too long", $3); 4327 free($3); 4328 YYERROR; 4329 } 4330 $$ = calloc(1, sizeof(struct node_state_opt)); 4331 if ($$ == NULL) 4332 err(1, "state_opt_item: calloc"); 4333 if (strlcpy($$->data.overload.tblname, $3, 4334 PF_TABLE_NAME_SIZE) >= PF_TABLE_NAME_SIZE) 4335 errx(1, "state_opt_item: strlcpy"); 4336 free($3); 4337 $$->type = PF_STATE_OPT_OVERLOAD; 4338 $$->data.overload.flush = $5; 4339 $$->next = NULL; 4340 $$->tail = $$; 4341 } 4342 | MAXSRCNODES NUMBER { 4343 if ($2 < 0 || $2 > UINT_MAX) { 4344 yyerror("only positive values permitted"); 4345 YYERROR; 4346 } 4347 $$ = calloc(1, sizeof(struct node_state_opt)); 4348 if ($$ == NULL) 4349 err(1, "state_opt_item: calloc"); 4350 $$->type = PF_STATE_OPT_MAX_SRC_NODES; 4351 $$->data.max_src_nodes = $2; 4352 $$->next = NULL; 4353 $$->tail = $$; 4354 } 4355 | sourcetrack { 4356 $$ = calloc(1, sizeof(struct node_state_opt)); 4357 if ($$ == NULL) 4358 err(1, "state_opt_item: calloc"); 4359 $$->type = PF_STATE_OPT_SRCTRACK; 4360 $$->data.src_track = $1; 4361 $$->next = NULL; 4362 $$->tail = $$; 4363 } 4364 | statelock { 4365 $$ = calloc(1, sizeof(struct node_state_opt)); 4366 if ($$ == NULL) 4367 err(1, "state_opt_item: calloc"); 4368 $$->type = PF_STATE_OPT_STATELOCK; 4369 $$->data.statelock = $1; 4370 $$->next = NULL; 4371 $$->tail = $$; 4372 } 4373 | SLOPPY { 4374 $$ = calloc(1, sizeof(struct node_state_opt)); 4375 if ($$ == NULL) 4376 err(1, "state_opt_item: calloc"); 4377 $$->type = PF_STATE_OPT_SLOPPY; 4378 $$->next = NULL; 4379 $$->tail = $$; 4380 } 4381 | PFLOW { 4382 $$ = calloc(1, sizeof(struct node_state_opt)); 4383 if ($$ == NULL) 4384 err(1, "state_opt_item: calloc"); 4385 $$->type = PF_STATE_OPT_PFLOW; 4386 $$->next = NULL; 4387 $$->tail = $$; 4388 } 4389 | STRING NUMBER { 4390 int i; 4391 4392 if ($2 < 0 || $2 > UINT_MAX) { 4393 yyerror("only positive values permitted"); 4394 YYERROR; 4395 } 4396 for (i = 0; pf_timeouts[i].name && 4397 strcmp(pf_timeouts[i].name, $1); ++i) 4398 ; /* nothing */ 4399 if (!pf_timeouts[i].name) { 4400 yyerror("illegal timeout name %s", $1); 4401 free($1); 4402 YYERROR; 4403 } 4404 if (strchr(pf_timeouts[i].name, '.') == NULL) { 4405 yyerror("illegal state timeout %s", $1); 4406 free($1); 4407 YYERROR; 4408 } 4409 free($1); 4410 $$ = calloc(1, sizeof(struct node_state_opt)); 4411 if ($$ == NULL) 4412 err(1, "state_opt_item: calloc"); 4413 $$->type = PF_STATE_OPT_TIMEOUT; 4414 $$->data.timeout.number = pf_timeouts[i].timeout; 4415 $$->data.timeout.seconds = $2; 4416 $$->next = NULL; 4417 $$->tail = $$; 4418 } 4419 ; 4420 4421 label : LABEL STRING { 4422 $$ = $2; 4423 } 4424 ; 4425 4426 etherqname : QUEUE STRING { 4427 $$.qname = $2; 4428 } 4429 | QUEUE '(' STRING ')' { 4430 $$.qname = $3; 4431 } 4432 ; 4433 4434 qname : QUEUE STRING { 4435 $$.qname = $2; 4436 $$.pqname = NULL; 4437 } 4438 | QUEUE '(' STRING ')' { 4439 $$.qname = $3; 4440 $$.pqname = NULL; 4441 } 4442 | QUEUE '(' STRING comma STRING ')' { 4443 $$.qname = $3; 4444 $$.pqname = $5; 4445 } 4446 ; 4447 4448 no : /* empty */ { $$ = 0; } 4449 | NO { $$ = 1; } 4450 ; 4451 4452 portstar : numberstring { 4453 if (parseport($1, &$$, PPORT_RANGE|PPORT_STAR) == -1) { 4454 free($1); 4455 YYERROR; 4456 } 4457 free($1); 4458 } 4459 ; 4460 4461 redirspec : host { $$ = $1; } 4462 | '{' optnl redir_host_list '}' { $$ = $3; } 4463 ; 4464 4465 redir_host_list : host optnl { $$ = $1; } 4466 | redir_host_list comma host optnl { 4467 $1->tail->next = $3; 4468 $1->tail = $3->tail; 4469 $$ = $1; 4470 } 4471 ; 4472 4473 redirpool : /* empty */ { $$ = NULL; } 4474 | ARROW redirspec { 4475 $$ = calloc(1, sizeof(struct redirection)); 4476 if ($$ == NULL) 4477 err(1, "redirection: calloc"); 4478 $$->host = $2; 4479 $$->rport.a = $$->rport.b = $$->rport.t = 0; 4480 } 4481 | ARROW redirspec PORT portstar { 4482 $$ = calloc(1, sizeof(struct redirection)); 4483 if ($$ == NULL) 4484 err(1, "redirection: calloc"); 4485 $$->host = $2; 4486 $$->rport = $4; 4487 } 4488 ; 4489 4490 hashkey : /* empty */ 4491 { 4492 $$ = calloc(1, sizeof(struct pf_poolhashkey)); 4493 if ($$ == NULL) 4494 err(1, "hashkey: calloc"); 4495 $$->key32[0] = arc4random(); 4496 $$->key32[1] = arc4random(); 4497 $$->key32[2] = arc4random(); 4498 $$->key32[3] = arc4random(); 4499 } 4500 | string 4501 { 4502 if (!strncmp($1, "0x", 2)) { 4503 if (strlen($1) != 34) { 4504 free($1); 4505 yyerror("hex key must be 128 bits " 4506 "(32 hex digits) long"); 4507 YYERROR; 4508 } 4509 $$ = calloc(1, sizeof(struct pf_poolhashkey)); 4510 if ($$ == NULL) 4511 err(1, "hashkey: calloc"); 4512 4513 if (sscanf($1, "0x%8x%8x%8x%8x", 4514 &$$->key32[0], &$$->key32[1], 4515 &$$->key32[2], &$$->key32[3]) != 4) { 4516 free($$); 4517 free($1); 4518 yyerror("invalid hex key"); 4519 YYERROR; 4520 } 4521 } else { 4522 MD5_CTX context; 4523 4524 $$ = calloc(1, sizeof(struct pf_poolhashkey)); 4525 if ($$ == NULL) 4526 err(1, "hashkey: calloc"); 4527 MD5Init(&context); 4528 MD5Update(&context, (unsigned char *)$1, 4529 strlen($1)); 4530 MD5Final((unsigned char *)$$, &context); 4531 HTONL($$->key32[0]); 4532 HTONL($$->key32[1]); 4533 HTONL($$->key32[2]); 4534 HTONL($$->key32[3]); 4535 } 4536 free($1); 4537 } 4538 ; 4539 4540 pool_opts : { bzero(&pool_opts, sizeof pool_opts); } 4541 pool_opts_l 4542 { $$ = pool_opts; } 4543 | /* empty */ { 4544 bzero(&pool_opts, sizeof pool_opts); 4545 $$ = pool_opts; 4546 } 4547 ; 4548 4549 pool_opts_l : pool_opts_l pool_opt 4550 | pool_opt 4551 ; 4552 4553 pool_opt : BITMASK { 4554 if (pool_opts.type) { 4555 yyerror("pool type cannot be redefined"); 4556 YYERROR; 4557 } 4558 pool_opts.type = PF_POOL_BITMASK; 4559 } 4560 | RANDOM { 4561 if (pool_opts.type) { 4562 yyerror("pool type cannot be redefined"); 4563 YYERROR; 4564 } 4565 pool_opts.type = PF_POOL_RANDOM; 4566 } 4567 | SOURCEHASH hashkey { 4568 if (pool_opts.type) { 4569 yyerror("pool type cannot be redefined"); 4570 YYERROR; 4571 } 4572 pool_opts.type = PF_POOL_SRCHASH; 4573 pool_opts.key = $2; 4574 } 4575 | ROUNDROBIN { 4576 if (pool_opts.type) { 4577 yyerror("pool type cannot be redefined"); 4578 YYERROR; 4579 } 4580 pool_opts.type = PF_POOL_ROUNDROBIN; 4581 } 4582 | STATICPORT { 4583 if (pool_opts.staticport) { 4584 yyerror("static-port cannot be redefined"); 4585 YYERROR; 4586 } 4587 pool_opts.staticport = 1; 4588 } 4589 | STICKYADDRESS { 4590 if (pool_opts.marker & POM_STICKYADDRESS) { 4591 yyerror("sticky-address cannot be redefined"); 4592 YYERROR; 4593 } 4594 pool_opts.marker |= POM_STICKYADDRESS; 4595 pool_opts.opts |= PF_POOL_STICKYADDR; 4596 } 4597 | ENDPI { 4598 if (pool_opts.marker & POM_ENDPI) { 4599 yyerror("endpoint-independent cannot be redefined"); 4600 YYERROR; 4601 } 4602 pool_opts.marker |= POM_ENDPI; 4603 pool_opts.opts |= PF_POOL_ENDPI; 4604 } 4605 | MAPEPORTSET number '/' number '/' number { 4606 if (pool_opts.mape.offset) { 4607 yyerror("map-e-portset cannot be redefined"); 4608 YYERROR; 4609 } 4610 if (pool_opts.type) { 4611 yyerror("map-e-portset cannot be used with " 4612 "address pools"); 4613 YYERROR; 4614 } 4615 if ($2 <= 0 || $2 >= 16) { 4616 yyerror("MAP-E PSID offset must be 1-15"); 4617 YYERROR; 4618 } 4619 if ($4 < 0 || $4 >= 16 || $2 + $4 > 16) { 4620 yyerror("Invalid MAP-E PSID length"); 4621 YYERROR; 4622 } else if ($4 == 0) { 4623 yyerror("PSID Length = 0: this means" 4624 " you do not need MAP-E"); 4625 YYERROR; 4626 } 4627 if ($6 < 0 || $6 > 65535) { 4628 yyerror("Invalid MAP-E PSID"); 4629 YYERROR; 4630 } 4631 pool_opts.mape.offset = $2; 4632 pool_opts.mape.psidlen = $4; 4633 pool_opts.mape.psid = $6; 4634 } 4635 ; 4636 4637 redirection : /* empty */ { $$ = NULL; } 4638 | ARROW host { 4639 $$ = calloc(1, sizeof(struct redirection)); 4640 if ($$ == NULL) 4641 err(1, "redirection: calloc"); 4642 $$->host = $2; 4643 $$->rport.a = $$->rport.b = $$->rport.t = 0; 4644 } 4645 | ARROW host PORT portstar { 4646 $$ = calloc(1, sizeof(struct redirection)); 4647 if ($$ == NULL) 4648 err(1, "redirection: calloc"); 4649 $$->host = $2; 4650 $$->rport = $4; 4651 } 4652 ; 4653 4654 natpasslog : /* empty */ { $$.b1 = $$.b2 = 0; $$.w2 = 0; } 4655 | PASS { $$.b1 = 1; $$.b2 = 0; $$.w2 = 0; } 4656 | PASS log { $$.b1 = 1; $$.b2 = $2.log; $$.w2 = $2.logif; } 4657 | log { $$.b1 = 0; $$.b2 = $1.log; $$.w2 = $1.logif; } 4658 ; 4659 4660 nataction : no NAT natpasslog { 4661 if ($1 && $3.b1) { 4662 yyerror("\"pass\" not valid with \"no\""); 4663 YYERROR; 4664 } 4665 if ($1) 4666 $$.b1 = PF_NONAT; 4667 else 4668 $$.b1 = PF_NAT; 4669 $$.b2 = $3.b1; 4670 $$.w = $3.b2; 4671 $$.w2 = $3.w2; 4672 } 4673 | no RDR natpasslog { 4674 if ($1 && $3.b1) { 4675 yyerror("\"pass\" not valid with \"no\""); 4676 YYERROR; 4677 } 4678 if ($1) 4679 $$.b1 = PF_NORDR; 4680 else 4681 $$.b1 = PF_RDR; 4682 $$.b2 = $3.b1; 4683 $$.w = $3.b2; 4684 $$.w2 = $3.w2; 4685 } 4686 ; 4687 4688 natrule : nataction interface af proto fromto tag tagged rtable 4689 redirpool pool_opts 4690 { 4691 struct pfctl_rule r; 4692 struct node_state_opt *o; 4693 4694 if (check_rulestate(PFCTL_STATE_NAT)) 4695 YYERROR; 4696 4697 memset(&r, 0, sizeof(r)); 4698 4699 r.action = $1.b1; 4700 r.natpass = $1.b2; 4701 r.log = $1.w; 4702 r.logif = $1.w2; 4703 r.af = $3; 4704 4705 if (!r.af) { 4706 if ($5.src.host && $5.src.host->af && 4707 !$5.src.host->ifindex) 4708 r.af = $5.src.host->af; 4709 else if ($5.dst.host && $5.dst.host->af && 4710 !$5.dst.host->ifindex) 4711 r.af = $5.dst.host->af; 4712 } 4713 4714 if ($6 != NULL) 4715 if (strlcpy(r.tagname, $6, PF_TAG_NAME_SIZE) >= 4716 PF_TAG_NAME_SIZE) { 4717 yyerror("tag too long, max %u chars", 4718 PF_TAG_NAME_SIZE - 1); 4719 YYERROR; 4720 } 4721 4722 if ($7.name) 4723 if (strlcpy(r.match_tagname, $7.name, 4724 PF_TAG_NAME_SIZE) >= PF_TAG_NAME_SIZE) { 4725 yyerror("tag too long, max %u chars", 4726 PF_TAG_NAME_SIZE - 1); 4727 YYERROR; 4728 } 4729 r.match_tag_not = $7.neg; 4730 r.rtableid = $8; 4731 4732 if (r.action == PF_NONAT || r.action == PF_NORDR) { 4733 if ($9 != NULL) { 4734 yyerror("translation rule with 'no' " 4735 "does not need '->'"); 4736 YYERROR; 4737 } 4738 } else { 4739 if ($9 == NULL || $9->host == NULL) { 4740 yyerror("translation rule requires '-> " 4741 "address'"); 4742 YYERROR; 4743 } 4744 if (!r.af && ! $9->host->ifindex) 4745 r.af = $9->host->af; 4746 4747 remove_invalid_hosts(&$9->host, &r.af); 4748 if (invalid_redirect($9->host, r.af)) 4749 YYERROR; 4750 if ($9->host->addr.type == PF_ADDR_DYNIFTL) { 4751 if (($9->host = gen_dynnode($9->host, r.af)) == NULL) 4752 err(1, "calloc"); 4753 } 4754 if (check_netmask($9->host, r.af)) 4755 YYERROR; 4756 4757 r.rpool.proxy_port[0] = ntohs($9->rport.a); 4758 4759 switch (r.action) { 4760 case PF_RDR: 4761 if (!$9->rport.b && $9->rport.t && 4762 $5.dst.port != NULL) { 4763 r.rpool.proxy_port[1] = 4764 ntohs($9->rport.a) + 4765 (ntohs( 4766 $5.dst.port->port[1]) - 4767 ntohs( 4768 $5.dst.port->port[0])); 4769 } else 4770 r.rpool.proxy_port[1] = 4771 ntohs($9->rport.b); 4772 break; 4773 case PF_NAT: 4774 r.rpool.proxy_port[1] = 4775 ntohs($9->rport.b); 4776 if (!r.rpool.proxy_port[0] && 4777 !r.rpool.proxy_port[1]) { 4778 r.rpool.proxy_port[0] = 4779 PF_NAT_PROXY_PORT_LOW; 4780 r.rpool.proxy_port[1] = 4781 PF_NAT_PROXY_PORT_HIGH; 4782 } else if (!r.rpool.proxy_port[1]) 4783 r.rpool.proxy_port[1] = 4784 r.rpool.proxy_port[0]; 4785 break; 4786 default: 4787 break; 4788 } 4789 4790 r.rpool.opts = $10.type; 4791 if ((r.rpool.opts & PF_POOL_TYPEMASK) == 4792 PF_POOL_NONE && ($9->host->next != NULL || 4793 $9->host->addr.type == PF_ADDR_TABLE || 4794 DYNIF_MULTIADDR($9->host->addr))) 4795 r.rpool.opts = PF_POOL_ROUNDROBIN; 4796 if ((r.rpool.opts & PF_POOL_TYPEMASK) != 4797 PF_POOL_ROUNDROBIN && 4798 disallow_table($9->host, "tables are only " 4799 "supported in round-robin redirection " 4800 "pools")) 4801 YYERROR; 4802 if ((r.rpool.opts & PF_POOL_TYPEMASK) != 4803 PF_POOL_ROUNDROBIN && 4804 disallow_alias($9->host, "interface (%s) " 4805 "is only supported in round-robin " 4806 "redirection pools")) 4807 YYERROR; 4808 if ($9->host->next != NULL) { 4809 if ((r.rpool.opts & PF_POOL_TYPEMASK) != 4810 PF_POOL_ROUNDROBIN) { 4811 yyerror("only round-robin " 4812 "valid for multiple " 4813 "redirection addresses"); 4814 YYERROR; 4815 } 4816 } 4817 } 4818 4819 if ($10.key != NULL) 4820 memcpy(&r.rpool.key, $10.key, 4821 sizeof(struct pf_poolhashkey)); 4822 4823 if ($10.opts) 4824 r.rpool.opts |= $10.opts; 4825 4826 if ($10.staticport) { 4827 if (r.action != PF_NAT) { 4828 yyerror("the 'static-port' option is " 4829 "only valid with nat rules"); 4830 YYERROR; 4831 } 4832 if (r.rpool.proxy_port[0] != 4833 PF_NAT_PROXY_PORT_LOW && 4834 r.rpool.proxy_port[1] != 4835 PF_NAT_PROXY_PORT_HIGH) { 4836 yyerror("the 'static-port' option can't" 4837 " be used when specifying a port" 4838 " range"); 4839 YYERROR; 4840 } 4841 r.rpool.proxy_port[0] = 0; 4842 r.rpool.proxy_port[1] = 0; 4843 } 4844 4845 if ($10.mape.offset) { 4846 if (r.action != PF_NAT) { 4847 yyerror("the 'map-e-portset' option is" 4848 " only valid with nat rules"); 4849 YYERROR; 4850 } 4851 if ($10.staticport) { 4852 yyerror("the 'map-e-portset' option" 4853 " can't be used 'static-port'"); 4854 YYERROR; 4855 } 4856 if (r.rpool.proxy_port[0] != 4857 PF_NAT_PROXY_PORT_LOW && 4858 r.rpool.proxy_port[1] != 4859 PF_NAT_PROXY_PORT_HIGH) { 4860 yyerror("the 'map-e-portset' option" 4861 " can't be used when specifying" 4862 " a port range"); 4863 YYERROR; 4864 } 4865 r.rpool.mape = $10.mape; 4866 } 4867 4868 o = keep_state_defaults; 4869 while (o) { 4870 switch (o->type) { 4871 case PF_STATE_OPT_PFLOW: 4872 if (r.rule_flag & PFRULE_PFLOW) { 4873 yyerror("state pflow option: " 4874 "multiple definitions"); 4875 YYERROR; 4876 } 4877 r.rule_flag |= PFRULE_PFLOW; 4878 break; 4879 } 4880 o = o->next; 4881 } 4882 4883 expand_rule(&r, $2, $9 == NULL ? NULL : $9->host, $4, 4884 $5.src_os, $5.src.host, $5.src.port, $5.dst.host, 4885 $5.dst.port, 0, 0, 0, ""); 4886 free($9); 4887 } 4888 ; 4889 4890 binatrule : no BINAT natpasslog interface af proto FROM ipspec toipspec tag 4891 tagged rtable redirection 4892 { 4893 struct pfctl_rule binat; 4894 struct pf_pooladdr *pa; 4895 4896 if (check_rulestate(PFCTL_STATE_NAT)) 4897 YYERROR; 4898 if (disallow_urpf_failed($9, "\"urpf-failed\" is not " 4899 "permitted as a binat destination")) 4900 YYERROR; 4901 4902 memset(&binat, 0, sizeof(binat)); 4903 4904 if ($1 && $3.b1) { 4905 yyerror("\"pass\" not valid with \"no\""); 4906 YYERROR; 4907 } 4908 if ($1) 4909 binat.action = PF_NOBINAT; 4910 else 4911 binat.action = PF_BINAT; 4912 binat.natpass = $3.b1; 4913 binat.log = $3.b2; 4914 binat.logif = $3.w2; 4915 binat.af = $5; 4916 if (!binat.af && $8 != NULL && $8->af) 4917 binat.af = $8->af; 4918 if (!binat.af && $9 != NULL && $9->af) 4919 binat.af = $9->af; 4920 4921 if (!binat.af && $13 != NULL && $13->host) 4922 binat.af = $13->host->af; 4923 if (!binat.af) { 4924 yyerror("address family (inet/inet6) " 4925 "undefined"); 4926 YYERROR; 4927 } 4928 4929 if ($4 != NULL) { 4930 memcpy(binat.ifname, $4->ifname, 4931 sizeof(binat.ifname)); 4932 binat.ifnot = $4->not; 4933 free($4); 4934 } 4935 4936 if ($10 != NULL) 4937 if (strlcpy(binat.tagname, $10, 4938 PF_TAG_NAME_SIZE) >= PF_TAG_NAME_SIZE) { 4939 yyerror("tag too long, max %u chars", 4940 PF_TAG_NAME_SIZE - 1); 4941 YYERROR; 4942 } 4943 if ($11.name) 4944 if (strlcpy(binat.match_tagname, $11.name, 4945 PF_TAG_NAME_SIZE) >= PF_TAG_NAME_SIZE) { 4946 yyerror("tag too long, max %u chars", 4947 PF_TAG_NAME_SIZE - 1); 4948 YYERROR; 4949 } 4950 binat.match_tag_not = $11.neg; 4951 binat.rtableid = $12; 4952 4953 if ($6 != NULL) { 4954 binat.proto = $6->proto; 4955 free($6); 4956 } 4957 4958 if ($8 != NULL && disallow_table($8, "invalid use of " 4959 "table <%s> as the source address of a binat rule")) 4960 YYERROR; 4961 if ($8 != NULL && disallow_alias($8, "invalid use of " 4962 "interface (%s) as the source address of a binat " 4963 "rule")) 4964 YYERROR; 4965 if ($13 != NULL && $13->host != NULL && disallow_table( 4966 $13->host, "invalid use of table <%s> as the " 4967 "redirect address of a binat rule")) 4968 YYERROR; 4969 if ($13 != NULL && $13->host != NULL && disallow_alias( 4970 $13->host, "invalid use of interface (%s) as the " 4971 "redirect address of a binat rule")) 4972 YYERROR; 4973 4974 if ($8 != NULL) { 4975 if ($8->next) { 4976 yyerror("multiple binat ip addresses"); 4977 YYERROR; 4978 } 4979 if ($8->addr.type == PF_ADDR_DYNIFTL) 4980 $8->af = binat.af; 4981 if ($8->af != binat.af) { 4982 yyerror("binat ip versions must match"); 4983 YYERROR; 4984 } 4985 if ($8->addr.type == PF_ADDR_DYNIFTL) { 4986 if (($8 = gen_dynnode($8, binat.af)) == NULL) 4987 err(1, "calloc"); 4988 } 4989 if (check_netmask($8, binat.af)) 4990 YYERROR; 4991 memcpy(&binat.src.addr, &$8->addr, 4992 sizeof(binat.src.addr)); 4993 free($8); 4994 } 4995 if ($9 != NULL) { 4996 if ($9->next) { 4997 yyerror("multiple binat ip addresses"); 4998 YYERROR; 4999 } 5000 if ($9->af != binat.af && $9->af) { 5001 yyerror("binat ip versions must match"); 5002 YYERROR; 5003 } 5004 if ($9->addr.type == PF_ADDR_DYNIFTL) { 5005 if (($9 = gen_dynnode($9, binat.af)) == NULL) 5006 err(1, "calloc"); 5007 } 5008 if (check_netmask($9, binat.af)) 5009 YYERROR; 5010 memcpy(&binat.dst.addr, &$9->addr, 5011 sizeof(binat.dst.addr)); 5012 binat.dst.neg = $9->not; 5013 free($9); 5014 } 5015 5016 if (binat.action == PF_NOBINAT) { 5017 if ($13 != NULL) { 5018 yyerror("'no binat' rule does not need" 5019 " '->'"); 5020 YYERROR; 5021 } 5022 } else { 5023 if ($13 == NULL || $13->host == NULL) { 5024 yyerror("'binat' rule requires" 5025 " '-> address'"); 5026 YYERROR; 5027 } 5028 5029 remove_invalid_hosts(&$13->host, &binat.af); 5030 if (invalid_redirect($13->host, binat.af)) 5031 YYERROR; 5032 if ($13->host->next != NULL) { 5033 yyerror("binat rule must redirect to " 5034 "a single address"); 5035 YYERROR; 5036 } 5037 if ($13->host->addr.type == PF_ADDR_DYNIFTL) { 5038 if (($13->host = gen_dynnode($13->host, binat.af)) == NULL) 5039 err(1, "calloc"); 5040 } 5041 if (check_netmask($13->host, binat.af)) 5042 YYERROR; 5043 5044 if (!PF_AZERO(&binat.src.addr.v.a.mask, 5045 binat.af) && 5046 !PF_AEQ(&binat.src.addr.v.a.mask, 5047 &$13->host->addr.v.a.mask, binat.af)) { 5048 yyerror("'binat' source mask and " 5049 "redirect mask must be the same"); 5050 YYERROR; 5051 } 5052 5053 TAILQ_INIT(&binat.rpool.list); 5054 pa = calloc(1, sizeof(struct pf_pooladdr)); 5055 if (pa == NULL) 5056 err(1, "binat: calloc"); 5057 pa->addr = $13->host->addr; 5058 pa->ifname[0] = 0; 5059 TAILQ_INSERT_TAIL(&binat.rpool.list, 5060 pa, entries); 5061 5062 free($13); 5063 } 5064 5065 pfctl_append_rule(pf, &binat, ""); 5066 } 5067 ; 5068 5069 tag : /* empty */ { $$ = NULL; } 5070 | TAG STRING { $$ = $2; } 5071 ; 5072 5073 tagged : /* empty */ { $$.neg = 0; $$.name = NULL; } 5074 | not TAGGED string { $$.neg = $1; $$.name = $3; } 5075 ; 5076 5077 rtable : /* empty */ { $$ = -1; } 5078 | RTABLE NUMBER { 5079 if ($2 < 0 || $2 > rt_tableid_max()) { 5080 yyerror("invalid rtable id"); 5081 YYERROR; 5082 } 5083 $$ = $2; 5084 } 5085 ; 5086 5087 route_host : STRING { 5088 $$ = calloc(1, sizeof(struct node_host)); 5089 if ($$ == NULL) 5090 err(1, "route_host: calloc"); 5091 if (strlen($1) >= IFNAMSIZ) { 5092 yyerror("interface name too long"); 5093 YYERROR; 5094 } 5095 $$->ifname = strdup($1); 5096 set_ipmask($$, 128); 5097 $$->next = NULL; 5098 $$->tail = $$; 5099 } 5100 | '(' STRING host ')' { 5101 struct node_host *n; 5102 5103 $$ = $3; 5104 for (n = $3; n != NULL; n = n->next) { 5105 if (strlen($2) >= IFNAMSIZ) { 5106 yyerror("interface name too long"); 5107 YYERROR; 5108 } 5109 n->ifname = strdup($2); 5110 } 5111 } 5112 ; 5113 5114 route_host_list : route_host optnl { $$ = $1; } 5115 | route_host_list comma route_host optnl { 5116 if ($1->af == 0) 5117 $1->af = $3->af; 5118 if ($1->af != $3->af) { 5119 yyerror("all pool addresses must be in the " 5120 "same address family"); 5121 YYERROR; 5122 } 5123 $1->tail->next = $3; 5124 $1->tail = $3->tail; 5125 $$ = $1; 5126 } 5127 ; 5128 5129 routespec : route_host { $$ = $1; } 5130 | '{' optnl route_host_list '}' { $$ = $3; } 5131 ; 5132 5133 route : /* empty */ { 5134 $$.host = NULL; 5135 $$.rt = 0; 5136 $$.pool_opts = 0; 5137 } 5138 | FASTROUTE { 5139 /* backwards-compat */ 5140 $$.host = NULL; 5141 $$.rt = 0; 5142 $$.pool_opts = 0; 5143 } 5144 | ROUTETO routespec pool_opts { 5145 $$.host = $2; 5146 $$.rt = PF_ROUTETO; 5147 $$.pool_opts = $3.type | $3.opts; 5148 if ($3.key != NULL) 5149 $$.key = $3.key; 5150 } 5151 | REPLYTO routespec pool_opts { 5152 $$.host = $2; 5153 $$.rt = PF_REPLYTO; 5154 $$.pool_opts = $3.type | $3.opts; 5155 if ($3.key != NULL) 5156 $$.key = $3.key; 5157 } 5158 | DUPTO routespec pool_opts { 5159 $$.host = $2; 5160 $$.rt = PF_DUPTO; 5161 $$.pool_opts = $3.type | $3.opts; 5162 if ($3.key != NULL) 5163 $$.key = $3.key; 5164 } 5165 ; 5166 5167 timeout_spec : STRING NUMBER 5168 { 5169 if (check_rulestate(PFCTL_STATE_OPTION)) { 5170 free($1); 5171 YYERROR; 5172 } 5173 if ($2 < 0 || $2 > UINT_MAX) { 5174 yyerror("only positive values permitted"); 5175 YYERROR; 5176 } 5177 if (pfctl_apply_timeout(pf, $1, $2, 0) != 0) { 5178 yyerror("unknown timeout %s", $1); 5179 free($1); 5180 YYERROR; 5181 } 5182 free($1); 5183 } 5184 | INTERVAL NUMBER { 5185 if (check_rulestate(PFCTL_STATE_OPTION)) 5186 YYERROR; 5187 if ($2 < 0 || $2 > UINT_MAX) { 5188 yyerror("only positive values permitted"); 5189 YYERROR; 5190 } 5191 if (pfctl_apply_timeout(pf, "interval", $2, 0) != 0) 5192 YYERROR; 5193 } 5194 ; 5195 5196 timeout_list : timeout_list comma timeout_spec optnl 5197 | timeout_spec optnl 5198 ; 5199 5200 limit_spec : STRING NUMBER 5201 { 5202 if (check_rulestate(PFCTL_STATE_OPTION)) { 5203 free($1); 5204 YYERROR; 5205 } 5206 if ($2 < 0 || $2 > UINT_MAX) { 5207 yyerror("only positive values permitted"); 5208 YYERROR; 5209 } 5210 if (pfctl_apply_limit(pf, $1, $2) != 0) { 5211 yyerror("unable to set limit %s %u", $1, $2); 5212 free($1); 5213 YYERROR; 5214 } 5215 free($1); 5216 } 5217 ; 5218 5219 limit_list : limit_list comma limit_spec optnl 5220 | limit_spec optnl 5221 ; 5222 5223 comma : ',' 5224 | /* empty */ 5225 ; 5226 5227 yesno : NO { $$ = 0; } 5228 | STRING { 5229 if (!strcmp($1, "yes")) 5230 $$ = 1; 5231 else { 5232 yyerror("invalid value '%s', expected 'yes' " 5233 "or 'no'", $1); 5234 free($1); 5235 YYERROR; 5236 } 5237 free($1); 5238 } 5239 ; 5240 5241 unaryop : '=' { $$ = PF_OP_EQ; } 5242 | '!' '=' { $$ = PF_OP_NE; } 5243 | '<' '=' { $$ = PF_OP_LE; } 5244 | '<' { $$ = PF_OP_LT; } 5245 | '>' '=' { $$ = PF_OP_GE; } 5246 | '>' { $$ = PF_OP_GT; } 5247 ; 5248 5249 %% 5250 5251 int 5252 yyerror(const char *fmt, ...) 5253 { 5254 va_list ap; 5255 5256 file->errors++; 5257 va_start(ap, fmt); 5258 fprintf(stderr, "%s:%d: ", file->name, yylval.lineno); 5259 vfprintf(stderr, fmt, ap); 5260 fprintf(stderr, "\n"); 5261 va_end(ap); 5262 return (0); 5263 } 5264 5265 int 5266 disallow_table(struct node_host *h, const char *fmt) 5267 { 5268 for (; h != NULL; h = h->next) 5269 if (h->addr.type == PF_ADDR_TABLE) { 5270 yyerror(fmt, h->addr.v.tblname); 5271 return (1); 5272 } 5273 return (0); 5274 } 5275 5276 int 5277 disallow_urpf_failed(struct node_host *h, const char *fmt) 5278 { 5279 for (; h != NULL; h = h->next) 5280 if (h->addr.type == PF_ADDR_URPFFAILED) { 5281 yyerror(fmt); 5282 return (1); 5283 } 5284 return (0); 5285 } 5286 5287 int 5288 disallow_alias(struct node_host *h, const char *fmt) 5289 { 5290 for (; h != NULL; h = h->next) 5291 if (DYNIF_MULTIADDR(h->addr)) { 5292 yyerror(fmt, h->addr.v.tblname); 5293 return (1); 5294 } 5295 return (0); 5296 } 5297 5298 int 5299 rule_consistent(struct pfctl_rule *r, int anchor_call) 5300 { 5301 int problems = 0; 5302 5303 switch (r->action) { 5304 case PF_PASS: 5305 case PF_MATCH: 5306 case PF_DROP: 5307 case PF_SCRUB: 5308 case PF_NOSCRUB: 5309 problems = filter_consistent(r, anchor_call); 5310 break; 5311 case PF_NAT: 5312 case PF_NONAT: 5313 problems = nat_consistent(r); 5314 break; 5315 case PF_RDR: 5316 case PF_NORDR: 5317 problems = rdr_consistent(r); 5318 break; 5319 case PF_BINAT: 5320 case PF_NOBINAT: 5321 default: 5322 break; 5323 } 5324 return (problems); 5325 } 5326 5327 int 5328 filter_consistent(struct pfctl_rule *r, int anchor_call) 5329 { 5330 int problems = 0; 5331 5332 if (r->proto != IPPROTO_TCP && r->proto != IPPROTO_UDP && 5333 r->proto != IPPROTO_SCTP && 5334 (r->src.port_op || r->dst.port_op)) { 5335 yyerror("port only applies to tcp/udp/sctp"); 5336 problems++; 5337 } 5338 if (r->proto != IPPROTO_ICMP && r->proto != IPPROTO_ICMPV6 && 5339 (r->type || r->code)) { 5340 yyerror("icmp-type/code only applies to icmp"); 5341 problems++; 5342 } 5343 if (!r->af && (r->type || r->code)) { 5344 yyerror("must indicate address family with icmp-type/code"); 5345 problems++; 5346 } 5347 if (r->overload_tblname[0] && 5348 r->max_src_conn == 0 && r->max_src_conn_rate.seconds == 0) { 5349 yyerror("'overload' requires 'max-src-conn' " 5350 "or 'max-src-conn-rate'"); 5351 problems++; 5352 } 5353 if ((r->proto == IPPROTO_ICMP && r->af == AF_INET6) || 5354 (r->proto == IPPROTO_ICMPV6 && r->af == AF_INET)) { 5355 yyerror("proto %s doesn't match address family %s", 5356 r->proto == IPPROTO_ICMP ? "icmp" : "icmp6", 5357 r->af == AF_INET ? "inet" : "inet6"); 5358 problems++; 5359 } 5360 if (r->allow_opts && r->action != PF_PASS) { 5361 yyerror("allow-opts can only be specified for pass rules"); 5362 problems++; 5363 } 5364 if (r->rule_flag & PFRULE_FRAGMENT && (r->src.port_op || 5365 r->dst.port_op || r->flagset || r->type || r->code)) { 5366 yyerror("fragments can be filtered only on IP header fields"); 5367 problems++; 5368 } 5369 if (r->rule_flag & PFRULE_RETURNRST && r->proto != IPPROTO_TCP) { 5370 yyerror("return-rst can only be applied to TCP rules"); 5371 problems++; 5372 } 5373 if (r->max_src_nodes && !(r->rule_flag & PFRULE_RULESRCTRACK)) { 5374 yyerror("max-src-nodes requires 'source-track rule'"); 5375 problems++; 5376 } 5377 if (r->action != PF_PASS && r->keep_state) { 5378 yyerror("keep state is great, but only for pass rules"); 5379 problems++; 5380 } 5381 if (r->rule_flag & PFRULE_STATESLOPPY && 5382 (r->keep_state == PF_STATE_MODULATE || 5383 r->keep_state == PF_STATE_SYNPROXY)) { 5384 yyerror("sloppy state matching cannot be used with " 5385 "synproxy state or modulate state"); 5386 problems++; 5387 } 5388 /* match rules rules */ 5389 if (r->action == PF_MATCH) { 5390 if (r->divert.port) { 5391 yyerror("divert is not supported on match rules"); 5392 problems++; 5393 } 5394 if (r->rt) { 5395 yyerror("route-to, reply-to, dup-to and fastroute " 5396 "must not be used on match rules"); 5397 problems++; 5398 } 5399 } 5400 if (r->rpool.opts & PF_POOL_STICKYADDR && !r->keep_state) { 5401 yyerror("'sticky-address' requires 'keep state'"); 5402 problems++; 5403 } 5404 return (-problems); 5405 } 5406 5407 int 5408 nat_consistent(struct pfctl_rule *r) 5409 { 5410 return (0); /* yeah! */ 5411 } 5412 5413 int 5414 rdr_consistent(struct pfctl_rule *r) 5415 { 5416 int problems = 0; 5417 5418 if (r->proto != IPPROTO_TCP && r->proto != IPPROTO_UDP && 5419 r->proto != IPPROTO_SCTP) { 5420 if (r->src.port_op) { 5421 yyerror("src port only applies to tcp/udp/sctp"); 5422 problems++; 5423 } 5424 if (r->dst.port_op) { 5425 yyerror("dst port only applies to tcp/udp/sctp"); 5426 problems++; 5427 } 5428 if (r->rpool.proxy_port[0]) { 5429 yyerror("rpool port only applies to tcp/udp/sctp"); 5430 problems++; 5431 } 5432 } 5433 if (r->dst.port_op && 5434 r->dst.port_op != PF_OP_EQ && r->dst.port_op != PF_OP_RRG) { 5435 yyerror("invalid port operator for rdr destination port"); 5436 problems++; 5437 } 5438 return (-problems); 5439 } 5440 5441 int 5442 process_tabledef(char *name, struct table_opts *opts) 5443 { 5444 struct pfr_buffer ab; 5445 struct node_tinit *ti; 5446 unsigned long maxcount; 5447 size_t s = sizeof(maxcount); 5448 5449 bzero(&ab, sizeof(ab)); 5450 ab.pfrb_type = PFRB_ADDRS; 5451 SIMPLEQ_FOREACH(ti, &opts->init_nodes, entries) { 5452 if (ti->file) 5453 if (pfr_buf_load(&ab, ti->file, 0, append_addr)) { 5454 if (errno) 5455 yyerror("cannot load \"%s\": %s", 5456 ti->file, strerror(errno)); 5457 else 5458 yyerror("file \"%s\" contains bad data", 5459 ti->file); 5460 goto _error; 5461 } 5462 if (ti->host) 5463 if (append_addr_host(&ab, ti->host, 0, 0)) { 5464 yyerror("cannot create address buffer: %s", 5465 strerror(errno)); 5466 goto _error; 5467 } 5468 } 5469 if (pf->opts & PF_OPT_VERBOSE) 5470 print_tabledef(name, opts->flags, opts->init_addr, 5471 &opts->init_nodes); 5472 if (!(pf->opts & PF_OPT_NOACTION) && 5473 pfctl_define_table(name, opts->flags, opts->init_addr, 5474 pf->anchor->name, &ab, pf->anchor->ruleset.tticket)) { 5475 5476 if (sysctlbyname("net.pf.request_maxcount", &maxcount, &s, 5477 NULL, 0) == -1) 5478 maxcount = 65535; 5479 5480 if (ab.pfrb_size > maxcount) 5481 yyerror("cannot define table %s: too many elements.\n" 5482 "Consider increasing net.pf.request_maxcount.", 5483 name); 5484 else 5485 yyerror("cannot define table %s: %s", name, 5486 pfr_strerror(errno)); 5487 5488 goto _error; 5489 } 5490 pf->tdirty = 1; 5491 pfr_buf_clear(&ab); 5492 return (0); 5493 _error: 5494 pfr_buf_clear(&ab); 5495 return (-1); 5496 } 5497 5498 struct keywords { 5499 const char *k_name; 5500 int k_val; 5501 }; 5502 5503 /* macro gore, but you should've seen the prior indentation nightmare... */ 5504 5505 #define FREE_LIST(T,r) \ 5506 do { \ 5507 T *p, *node = r; \ 5508 while (node != NULL) { \ 5509 p = node; \ 5510 node = node->next; \ 5511 free(p); \ 5512 } \ 5513 } while (0) 5514 5515 #define LOOP_THROUGH(T,n,r,C) \ 5516 do { \ 5517 T *n; \ 5518 if (r == NULL) { \ 5519 r = calloc(1, sizeof(T)); \ 5520 if (r == NULL) \ 5521 err(1, "LOOP: calloc"); \ 5522 r->next = NULL; \ 5523 } \ 5524 n = r; \ 5525 while (n != NULL) { \ 5526 do { \ 5527 C; \ 5528 } while (0); \ 5529 n = n->next; \ 5530 } \ 5531 } while (0) 5532 5533 void 5534 expand_label_str(char *label, size_t len, const char *srch, const char *repl) 5535 { 5536 char *tmp; 5537 char *p, *q; 5538 5539 if ((tmp = calloc(1, len)) == NULL) 5540 err(1, "expand_label_str: calloc"); 5541 p = q = label; 5542 while ((q = strstr(p, srch)) != NULL) { 5543 *q = '\0'; 5544 if ((strlcat(tmp, p, len) >= len) || 5545 (strlcat(tmp, repl, len) >= len)) 5546 errx(1, "expand_label: label too long"); 5547 q += strlen(srch); 5548 p = q; 5549 } 5550 if (strlcat(tmp, p, len) >= len) 5551 errx(1, "expand_label: label too long"); 5552 strlcpy(label, tmp, len); /* always fits */ 5553 free(tmp); 5554 } 5555 5556 void 5557 expand_label_if(const char *name, char *label, size_t len, const char *ifname) 5558 { 5559 if (strstr(label, name) != NULL) { 5560 if (!*ifname) 5561 expand_label_str(label, len, name, "any"); 5562 else 5563 expand_label_str(label, len, name, ifname); 5564 } 5565 } 5566 5567 void 5568 expand_label_addr(const char *name, char *label, size_t len, sa_family_t af, 5569 struct pf_rule_addr *addr) 5570 { 5571 char tmp[64], tmp_not[66]; 5572 5573 if (strstr(label, name) != NULL) { 5574 switch (addr->addr.type) { 5575 case PF_ADDR_DYNIFTL: 5576 snprintf(tmp, sizeof(tmp), "(%s)", addr->addr.v.ifname); 5577 break; 5578 case PF_ADDR_TABLE: 5579 snprintf(tmp, sizeof(tmp), "<%s>", addr->addr.v.tblname); 5580 break; 5581 case PF_ADDR_NOROUTE: 5582 snprintf(tmp, sizeof(tmp), "no-route"); 5583 break; 5584 case PF_ADDR_URPFFAILED: 5585 snprintf(tmp, sizeof(tmp), "urpf-failed"); 5586 break; 5587 case PF_ADDR_ADDRMASK: 5588 if (!af || (PF_AZERO(&addr->addr.v.a.addr, af) && 5589 PF_AZERO(&addr->addr.v.a.mask, af))) 5590 snprintf(tmp, sizeof(tmp), "any"); 5591 else { 5592 char a[48]; 5593 int bits; 5594 5595 if (inet_ntop(af, &addr->addr.v.a.addr, a, 5596 sizeof(a)) == NULL) 5597 snprintf(tmp, sizeof(tmp), "?"); 5598 else { 5599 bits = unmask(&addr->addr.v.a.mask, af); 5600 if ((af == AF_INET && bits < 32) || 5601 (af == AF_INET6 && bits < 128)) 5602 snprintf(tmp, sizeof(tmp), 5603 "%s/%d", a, bits); 5604 else 5605 snprintf(tmp, sizeof(tmp), 5606 "%s", a); 5607 } 5608 } 5609 break; 5610 default: 5611 snprintf(tmp, sizeof(tmp), "?"); 5612 break; 5613 } 5614 5615 if (addr->neg) { 5616 snprintf(tmp_not, sizeof(tmp_not), "! %s", tmp); 5617 expand_label_str(label, len, name, tmp_not); 5618 } else 5619 expand_label_str(label, len, name, tmp); 5620 } 5621 } 5622 5623 void 5624 expand_label_port(const char *name, char *label, size_t len, 5625 struct pf_rule_addr *addr) 5626 { 5627 char a1[6], a2[6], op[13] = ""; 5628 5629 if (strstr(label, name) != NULL) { 5630 snprintf(a1, sizeof(a1), "%u", ntohs(addr->port[0])); 5631 snprintf(a2, sizeof(a2), "%u", ntohs(addr->port[1])); 5632 if (!addr->port_op) 5633 ; 5634 else if (addr->port_op == PF_OP_IRG) 5635 snprintf(op, sizeof(op), "%s><%s", a1, a2); 5636 else if (addr->port_op == PF_OP_XRG) 5637 snprintf(op, sizeof(op), "%s<>%s", a1, a2); 5638 else if (addr->port_op == PF_OP_EQ) 5639 snprintf(op, sizeof(op), "%s", a1); 5640 else if (addr->port_op == PF_OP_NE) 5641 snprintf(op, sizeof(op), "!=%s", a1); 5642 else if (addr->port_op == PF_OP_LT) 5643 snprintf(op, sizeof(op), "<%s", a1); 5644 else if (addr->port_op == PF_OP_LE) 5645 snprintf(op, sizeof(op), "<=%s", a1); 5646 else if (addr->port_op == PF_OP_GT) 5647 snprintf(op, sizeof(op), ">%s", a1); 5648 else if (addr->port_op == PF_OP_GE) 5649 snprintf(op, sizeof(op), ">=%s", a1); 5650 expand_label_str(label, len, name, op); 5651 } 5652 } 5653 5654 void 5655 expand_label_proto(const char *name, char *label, size_t len, u_int8_t proto) 5656 { 5657 const char *protoname; 5658 char n[4]; 5659 5660 if (strstr(label, name) != NULL) { 5661 protoname = pfctl_proto2name(proto); 5662 if (protoname != NULL) 5663 expand_label_str(label, len, name, protoname); 5664 else { 5665 snprintf(n, sizeof(n), "%u", proto); 5666 expand_label_str(label, len, name, n); 5667 } 5668 } 5669 } 5670 5671 void 5672 expand_label_nr(const char *name, char *label, size_t len, 5673 struct pfctl_rule *r) 5674 { 5675 char n[11]; 5676 5677 if (strstr(label, name) != NULL) { 5678 snprintf(n, sizeof(n), "%u", r->nr); 5679 expand_label_str(label, len, name, n); 5680 } 5681 } 5682 5683 void 5684 expand_label(char *label, size_t len, struct pfctl_rule *r) 5685 { 5686 expand_label_if("$if", label, len, r->ifname); 5687 expand_label_addr("$srcaddr", label, len, r->af, &r->src); 5688 expand_label_addr("$dstaddr", label, len, r->af, &r->dst); 5689 expand_label_port("$srcport", label, len, &r->src); 5690 expand_label_port("$dstport", label, len, &r->dst); 5691 expand_label_proto("$proto", label, len, r->proto); 5692 expand_label_nr("$nr", label, len, r); 5693 } 5694 5695 int 5696 expand_altq(struct pf_altq *a, struct node_if *interfaces, 5697 struct node_queue *nqueues, struct node_queue_bw bwspec, 5698 struct node_queue_opt *opts) 5699 { 5700 struct pf_altq pa, pb; 5701 char qname[PF_QNAME_SIZE]; 5702 struct node_queue *n; 5703 struct node_queue_bw bw; 5704 int errs = 0; 5705 5706 if ((pf->loadopt & PFCTL_FLAG_ALTQ) == 0) { 5707 FREE_LIST(struct node_if, interfaces); 5708 if (nqueues) 5709 FREE_LIST(struct node_queue, nqueues); 5710 return (0); 5711 } 5712 5713 LOOP_THROUGH(struct node_if, interface, interfaces, 5714 memcpy(&pa, a, sizeof(struct pf_altq)); 5715 if (strlcpy(pa.ifname, interface->ifname, 5716 sizeof(pa.ifname)) >= sizeof(pa.ifname)) 5717 errx(1, "expand_altq: strlcpy"); 5718 5719 if (interface->not) { 5720 yyerror("altq on ! <interface> is not supported"); 5721 errs++; 5722 } else { 5723 if (eval_pfaltq(pf, &pa, &bwspec, opts)) 5724 errs++; 5725 else 5726 if (pfctl_add_altq(pf, &pa)) 5727 errs++; 5728 5729 if (pf->opts & PF_OPT_VERBOSE) { 5730 print_altq(&pf->paltq->altq, 0, 5731 &bwspec, opts); 5732 if (nqueues && nqueues->tail) { 5733 printf("queue { "); 5734 LOOP_THROUGH(struct node_queue, queue, 5735 nqueues, 5736 printf("%s ", 5737 queue->queue); 5738 ); 5739 printf("}"); 5740 } 5741 printf("\n"); 5742 } 5743 5744 if (pa.scheduler == ALTQT_CBQ || 5745 pa.scheduler == ALTQT_HFSC || 5746 pa.scheduler == ALTQT_FAIRQ) { 5747 /* now create a root queue */ 5748 memset(&pb, 0, sizeof(struct pf_altq)); 5749 if (strlcpy(qname, "root_", sizeof(qname)) >= 5750 sizeof(qname)) 5751 errx(1, "expand_altq: strlcpy"); 5752 if (strlcat(qname, interface->ifname, 5753 sizeof(qname)) >= sizeof(qname)) 5754 errx(1, "expand_altq: strlcat"); 5755 if (strlcpy(pb.qname, qname, 5756 sizeof(pb.qname)) >= sizeof(pb.qname)) 5757 errx(1, "expand_altq: strlcpy"); 5758 if (strlcpy(pb.ifname, interface->ifname, 5759 sizeof(pb.ifname)) >= sizeof(pb.ifname)) 5760 errx(1, "expand_altq: strlcpy"); 5761 pb.qlimit = pa.qlimit; 5762 pb.scheduler = pa.scheduler; 5763 bw.bw_absolute = pa.ifbandwidth; 5764 bw.bw_percent = 0; 5765 if (eval_pfqueue(pf, &pb, &bw, opts)) 5766 errs++; 5767 else 5768 if (pfctl_add_altq(pf, &pb)) 5769 errs++; 5770 } 5771 5772 LOOP_THROUGH(struct node_queue, queue, nqueues, 5773 n = calloc(1, sizeof(struct node_queue)); 5774 if (n == NULL) 5775 err(1, "expand_altq: calloc"); 5776 if (pa.scheduler == ALTQT_CBQ || 5777 pa.scheduler == ALTQT_HFSC || 5778 pa.scheduler == ALTQT_FAIRQ) 5779 if (strlcpy(n->parent, qname, 5780 sizeof(n->parent)) >= 5781 sizeof(n->parent)) 5782 errx(1, "expand_altq: strlcpy"); 5783 if (strlcpy(n->queue, queue->queue, 5784 sizeof(n->queue)) >= sizeof(n->queue)) 5785 errx(1, "expand_altq: strlcpy"); 5786 if (strlcpy(n->ifname, interface->ifname, 5787 sizeof(n->ifname)) >= sizeof(n->ifname)) 5788 errx(1, "expand_altq: strlcpy"); 5789 n->scheduler = pa.scheduler; 5790 n->next = NULL; 5791 n->tail = n; 5792 if (queues == NULL) 5793 queues = n; 5794 else { 5795 queues->tail->next = n; 5796 queues->tail = n; 5797 } 5798 ); 5799 } 5800 ); 5801 FREE_LIST(struct node_if, interfaces); 5802 if (nqueues) 5803 FREE_LIST(struct node_queue, nqueues); 5804 5805 return (errs); 5806 } 5807 5808 int 5809 expand_queue(struct pf_altq *a, struct node_if *interfaces, 5810 struct node_queue *nqueues, struct node_queue_bw bwspec, 5811 struct node_queue_opt *opts) 5812 { 5813 struct node_queue *n, *nq; 5814 struct pf_altq pa; 5815 u_int8_t found = 0; 5816 u_int8_t errs = 0; 5817 5818 if ((pf->loadopt & PFCTL_FLAG_ALTQ) == 0) { 5819 FREE_LIST(struct node_queue, nqueues); 5820 return (0); 5821 } 5822 5823 if (queues == NULL) { 5824 yyerror("queue %s has no parent", a->qname); 5825 FREE_LIST(struct node_queue, nqueues); 5826 return (1); 5827 } 5828 5829 LOOP_THROUGH(struct node_if, interface, interfaces, 5830 LOOP_THROUGH(struct node_queue, tqueue, queues, 5831 if (!strncmp(a->qname, tqueue->queue, PF_QNAME_SIZE) && 5832 (interface->ifname[0] == 0 || 5833 (!interface->not && !strncmp(interface->ifname, 5834 tqueue->ifname, IFNAMSIZ)) || 5835 (interface->not && strncmp(interface->ifname, 5836 tqueue->ifname, IFNAMSIZ)))) { 5837 /* found ourself in queues */ 5838 found++; 5839 5840 memcpy(&pa, a, sizeof(struct pf_altq)); 5841 5842 if (pa.scheduler != ALTQT_NONE && 5843 pa.scheduler != tqueue->scheduler) { 5844 yyerror("exactly one scheduler type " 5845 "per interface allowed"); 5846 return (1); 5847 } 5848 pa.scheduler = tqueue->scheduler; 5849 5850 /* scheduler dependent error checking */ 5851 switch (pa.scheduler) { 5852 case ALTQT_PRIQ: 5853 if (nqueues != NULL) { 5854 yyerror("priq queues cannot " 5855 "have child queues"); 5856 return (1); 5857 } 5858 if (bwspec.bw_absolute > 0 || 5859 bwspec.bw_percent < 100) { 5860 yyerror("priq doesn't take " 5861 "bandwidth"); 5862 return (1); 5863 } 5864 break; 5865 default: 5866 break; 5867 } 5868 5869 if (strlcpy(pa.ifname, tqueue->ifname, 5870 sizeof(pa.ifname)) >= sizeof(pa.ifname)) 5871 errx(1, "expand_queue: strlcpy"); 5872 if (strlcpy(pa.parent, tqueue->parent, 5873 sizeof(pa.parent)) >= sizeof(pa.parent)) 5874 errx(1, "expand_queue: strlcpy"); 5875 5876 if (eval_pfqueue(pf, &pa, &bwspec, opts)) 5877 errs++; 5878 else 5879 if (pfctl_add_altq(pf, &pa)) 5880 errs++; 5881 5882 for (nq = nqueues; nq != NULL; nq = nq->next) { 5883 if (!strcmp(a->qname, nq->queue)) { 5884 yyerror("queue cannot have " 5885 "itself as child"); 5886 errs++; 5887 continue; 5888 } 5889 n = calloc(1, 5890 sizeof(struct node_queue)); 5891 if (n == NULL) 5892 err(1, "expand_queue: calloc"); 5893 if (strlcpy(n->parent, a->qname, 5894 sizeof(n->parent)) >= 5895 sizeof(n->parent)) 5896 errx(1, "expand_queue strlcpy"); 5897 if (strlcpy(n->queue, nq->queue, 5898 sizeof(n->queue)) >= 5899 sizeof(n->queue)) 5900 errx(1, "expand_queue strlcpy"); 5901 if (strlcpy(n->ifname, tqueue->ifname, 5902 sizeof(n->ifname)) >= 5903 sizeof(n->ifname)) 5904 errx(1, "expand_queue strlcpy"); 5905 n->scheduler = tqueue->scheduler; 5906 n->next = NULL; 5907 n->tail = n; 5908 if (queues == NULL) 5909 queues = n; 5910 else { 5911 queues->tail->next = n; 5912 queues->tail = n; 5913 } 5914 } 5915 if ((pf->opts & PF_OPT_VERBOSE) && ( 5916 (found == 1 && interface->ifname[0] == 0) || 5917 (found > 0 && interface->ifname[0] != 0))) { 5918 print_queue(&pf->paltq->altq, 0, 5919 &bwspec, interface->ifname[0] != 0, 5920 opts); 5921 if (nqueues && nqueues->tail) { 5922 printf("{ "); 5923 LOOP_THROUGH(struct node_queue, 5924 queue, nqueues, 5925 printf("%s ", 5926 queue->queue); 5927 ); 5928 printf("}"); 5929 } 5930 printf("\n"); 5931 } 5932 } 5933 ); 5934 ); 5935 5936 FREE_LIST(struct node_queue, nqueues); 5937 FREE_LIST(struct node_if, interfaces); 5938 5939 if (!found) { 5940 yyerror("queue %s has no parent", a->qname); 5941 errs++; 5942 } 5943 5944 if (errs) 5945 return (1); 5946 else 5947 return (0); 5948 } 5949 5950 static int 5951 pf_af_to_proto(sa_family_t af) 5952 { 5953 if (af == AF_INET) 5954 return (ETHERTYPE_IP); 5955 if (af == AF_INET6) 5956 return (ETHERTYPE_IPV6); 5957 5958 return (0); 5959 } 5960 5961 void 5962 expand_eth_rule(struct pfctl_eth_rule *r, 5963 struct node_if *interfaces, struct node_etherproto *protos, 5964 struct node_mac *srcs, struct node_mac *dsts, 5965 struct node_host *ipsrcs, struct node_host *ipdsts, 5966 const char *bridge_to, const char *anchor_call) 5967 { 5968 char tagname[PF_TAG_NAME_SIZE]; 5969 char match_tagname[PF_TAG_NAME_SIZE]; 5970 char qname[PF_QNAME_SIZE]; 5971 5972 if (strlcpy(tagname, r->tagname, sizeof(tagname)) >= sizeof(tagname)) 5973 errx(1, "expand_eth_rule: tagname"); 5974 if (strlcpy(match_tagname, r->match_tagname, sizeof(match_tagname)) >= 5975 sizeof(match_tagname)) 5976 errx(1, "expand_eth_rule: match_tagname"); 5977 if (strlcpy(qname, r->qname, sizeof(qname)) >= sizeof(qname)) 5978 errx(1, "expand_eth_rule: qname"); 5979 5980 LOOP_THROUGH(struct node_if, interface, interfaces, 5981 LOOP_THROUGH(struct node_etherproto, proto, protos, 5982 LOOP_THROUGH(struct node_mac, src, srcs, 5983 LOOP_THROUGH(struct node_mac, dst, dsts, 5984 LOOP_THROUGH(struct node_host, ipsrc, ipsrcs, 5985 LOOP_THROUGH(struct node_host, ipdst, ipdsts, 5986 strlcpy(r->ifname, interface->ifname, 5987 sizeof(r->ifname)); 5988 r->ifnot = interface->not; 5989 r->proto = proto->proto; 5990 if (!r->proto && ipsrc->af) 5991 r->proto = pf_af_to_proto(ipsrc->af); 5992 else if (!r->proto && ipdst->af) 5993 r->proto = pf_af_to_proto(ipdst->af); 5994 bcopy(src->mac, r->src.addr, ETHER_ADDR_LEN); 5995 bcopy(src->mask, r->src.mask, ETHER_ADDR_LEN); 5996 r->src.neg = src->neg; 5997 r->src.isset = src->isset; 5998 r->ipsrc.addr = ipsrc->addr; 5999 r->ipsrc.neg = ipsrc->not; 6000 r->ipdst.addr = ipdst->addr; 6001 r->ipdst.neg = ipdst->not; 6002 bcopy(dst->mac, r->dst.addr, ETHER_ADDR_LEN); 6003 bcopy(dst->mask, r->dst.mask, ETHER_ADDR_LEN); 6004 r->dst.neg = dst->neg; 6005 r->dst.isset = dst->isset; 6006 r->nr = pf->eastack[pf->asd]->match++; 6007 6008 if (strlcpy(r->tagname, tagname, sizeof(r->tagname)) >= 6009 sizeof(r->tagname)) 6010 errx(1, "expand_eth_rule: r->tagname"); 6011 if (strlcpy(r->match_tagname, match_tagname, 6012 sizeof(r->match_tagname)) >= sizeof(r->match_tagname)) 6013 errx(1, "expand_eth_rule: r->match_tagname"); 6014 if (strlcpy(r->qname, qname, sizeof(r->qname)) >= sizeof(r->qname)) 6015 errx(1, "expand_eth_rule: r->qname"); 6016 6017 if (bridge_to) 6018 strlcpy(r->bridge_to, bridge_to, sizeof(r->bridge_to)); 6019 6020 pfctl_append_eth_rule(pf, r, anchor_call); 6021 )))))); 6022 6023 FREE_LIST(struct node_if, interfaces); 6024 FREE_LIST(struct node_etherproto, protos); 6025 FREE_LIST(struct node_mac, srcs); 6026 FREE_LIST(struct node_mac, dsts); 6027 FREE_LIST(struct node_host, ipsrcs); 6028 FREE_LIST(struct node_host, ipdsts); 6029 } 6030 6031 void 6032 expand_rule(struct pfctl_rule *r, 6033 struct node_if *interfaces, struct node_host *rpool_hosts, 6034 struct node_proto *protos, struct node_os *src_oses, 6035 struct node_host *src_hosts, struct node_port *src_ports, 6036 struct node_host *dst_hosts, struct node_port *dst_ports, 6037 struct node_uid *uids, struct node_gid *gids, struct node_icmp *icmp_types, 6038 const char *anchor_call) 6039 { 6040 sa_family_t af = r->af; 6041 int added = 0, error = 0; 6042 char ifname[IF_NAMESIZE]; 6043 char label[PF_RULE_MAX_LABEL_COUNT][PF_RULE_LABEL_SIZE]; 6044 char tagname[PF_TAG_NAME_SIZE]; 6045 char match_tagname[PF_TAG_NAME_SIZE]; 6046 struct pf_pooladdr *pa; 6047 struct node_host *h, *osrch, *odsth; 6048 u_int8_t flags, flagset, keep_state; 6049 6050 memcpy(label, r->label, sizeof(r->label)); 6051 assert(sizeof(r->label) == sizeof(label)); 6052 if (strlcpy(tagname, r->tagname, sizeof(tagname)) >= sizeof(tagname)) 6053 errx(1, "expand_rule: strlcpy"); 6054 if (strlcpy(match_tagname, r->match_tagname, sizeof(match_tagname)) >= 6055 sizeof(match_tagname)) 6056 errx(1, "expand_rule: strlcpy"); 6057 flags = r->flags; 6058 flagset = r->flagset; 6059 keep_state = r->keep_state; 6060 6061 LOOP_THROUGH(struct node_if, interface, interfaces, 6062 LOOP_THROUGH(struct node_proto, proto, protos, 6063 LOOP_THROUGH(struct node_icmp, icmp_type, icmp_types, 6064 LOOP_THROUGH(struct node_host, src_host, src_hosts, 6065 LOOP_THROUGH(struct node_port, src_port, src_ports, 6066 LOOP_THROUGH(struct node_os, src_os, src_oses, 6067 LOOP_THROUGH(struct node_host, dst_host, dst_hosts, 6068 LOOP_THROUGH(struct node_port, dst_port, dst_ports, 6069 LOOP_THROUGH(struct node_uid, uid, uids, 6070 LOOP_THROUGH(struct node_gid, gid, gids, 6071 6072 r->af = af; 6073 /* for link-local IPv6 address, interface must match up */ 6074 if ((r->af && src_host->af && r->af != src_host->af) || 6075 (r->af && dst_host->af && r->af != dst_host->af) || 6076 (src_host->af && dst_host->af && 6077 src_host->af != dst_host->af) || 6078 (src_host->ifindex && dst_host->ifindex && 6079 src_host->ifindex != dst_host->ifindex) || 6080 (src_host->ifindex && *interface->ifname && 6081 src_host->ifindex != if_nametoindex(interface->ifname)) || 6082 (dst_host->ifindex && *interface->ifname && 6083 dst_host->ifindex != if_nametoindex(interface->ifname))) 6084 continue; 6085 if (!r->af && src_host->af) 6086 r->af = src_host->af; 6087 else if (!r->af && dst_host->af) 6088 r->af = dst_host->af; 6089 6090 if (*interface->ifname) 6091 strlcpy(r->ifname, interface->ifname, 6092 sizeof(r->ifname)); 6093 else if (if_indextoname(src_host->ifindex, ifname)) 6094 strlcpy(r->ifname, ifname, sizeof(r->ifname)); 6095 else if (if_indextoname(dst_host->ifindex, ifname)) 6096 strlcpy(r->ifname, ifname, sizeof(r->ifname)); 6097 else 6098 memset(r->ifname, '\0', sizeof(r->ifname)); 6099 6100 memcpy(r->label, label, sizeof(r->label)); 6101 if (strlcpy(r->tagname, tagname, sizeof(r->tagname)) >= 6102 sizeof(r->tagname)) 6103 errx(1, "expand_rule: strlcpy"); 6104 if (strlcpy(r->match_tagname, match_tagname, 6105 sizeof(r->match_tagname)) >= sizeof(r->match_tagname)) 6106 errx(1, "expand_rule: strlcpy"); 6107 6108 osrch = odsth = NULL; 6109 if (src_host->addr.type == PF_ADDR_DYNIFTL) { 6110 osrch = src_host; 6111 if ((src_host = gen_dynnode(src_host, r->af)) == NULL) 6112 err(1, "expand_rule: calloc"); 6113 } 6114 if (dst_host->addr.type == PF_ADDR_DYNIFTL) { 6115 odsth = dst_host; 6116 if ((dst_host = gen_dynnode(dst_host, r->af)) == NULL) 6117 err(1, "expand_rule: calloc"); 6118 } 6119 6120 error += check_netmask(src_host, r->af); 6121 error += check_netmask(dst_host, r->af); 6122 6123 r->ifnot = interface->not; 6124 r->proto = proto->proto; 6125 r->src.addr = src_host->addr; 6126 r->src.neg = src_host->not; 6127 r->src.port[0] = src_port->port[0]; 6128 r->src.port[1] = src_port->port[1]; 6129 r->src.port_op = src_port->op; 6130 r->dst.addr = dst_host->addr; 6131 r->dst.neg = dst_host->not; 6132 r->dst.port[0] = dst_port->port[0]; 6133 r->dst.port[1] = dst_port->port[1]; 6134 r->dst.port_op = dst_port->op; 6135 r->uid.op = uid->op; 6136 r->uid.uid[0] = uid->uid[0]; 6137 r->uid.uid[1] = uid->uid[1]; 6138 r->gid.op = gid->op; 6139 r->gid.gid[0] = gid->gid[0]; 6140 r->gid.gid[1] = gid->gid[1]; 6141 r->type = icmp_type->type; 6142 r->code = icmp_type->code; 6143 6144 if ((keep_state == PF_STATE_MODULATE || 6145 keep_state == PF_STATE_SYNPROXY) && 6146 r->proto && r->proto != IPPROTO_TCP) 6147 r->keep_state = PF_STATE_NORMAL; 6148 else 6149 r->keep_state = keep_state; 6150 6151 if (r->proto && r->proto != IPPROTO_TCP) { 6152 r->flags = 0; 6153 r->flagset = 0; 6154 } else { 6155 r->flags = flags; 6156 r->flagset = flagset; 6157 } 6158 if (icmp_type->proto && r->proto != icmp_type->proto) { 6159 yyerror("icmp-type mismatch"); 6160 error++; 6161 } 6162 6163 if (src_os && src_os->os) { 6164 r->os_fingerprint = pfctl_get_fingerprint(src_os->os); 6165 if ((pf->opts & PF_OPT_VERBOSE2) && 6166 r->os_fingerprint == PF_OSFP_NOMATCH) 6167 fprintf(stderr, 6168 "warning: unknown '%s' OS fingerprint\n", 6169 src_os->os); 6170 } else { 6171 r->os_fingerprint = PF_OSFP_ANY; 6172 } 6173 6174 TAILQ_INIT(&r->rpool.list); 6175 for (h = rpool_hosts; h != NULL; h = h->next) { 6176 pa = calloc(1, sizeof(struct pf_pooladdr)); 6177 if (pa == NULL) 6178 err(1, "expand_rule: calloc"); 6179 pa->addr = h->addr; 6180 if (h->ifname != NULL) { 6181 if (strlcpy(pa->ifname, h->ifname, 6182 sizeof(pa->ifname)) >= 6183 sizeof(pa->ifname)) 6184 errx(1, "expand_rule: strlcpy"); 6185 } else 6186 pa->ifname[0] = 0; 6187 TAILQ_INSERT_TAIL(&r->rpool.list, pa, entries); 6188 } 6189 6190 if (rule_consistent(r, anchor_call[0]) < 0 || error) 6191 yyerror("skipping rule due to errors"); 6192 else { 6193 r->nr = pf->astack[pf->asd]->match++; 6194 pfctl_append_rule(pf, r, anchor_call); 6195 added++; 6196 } 6197 6198 if (osrch && src_host->addr.type == PF_ADDR_DYNIFTL) { 6199 free(src_host); 6200 src_host = osrch; 6201 } 6202 if (odsth && dst_host->addr.type == PF_ADDR_DYNIFTL) { 6203 free(dst_host); 6204 dst_host = odsth; 6205 } 6206 6207 )))))))))); 6208 6209 FREE_LIST(struct node_if, interfaces); 6210 FREE_LIST(struct node_proto, protos); 6211 FREE_LIST(struct node_host, src_hosts); 6212 FREE_LIST(struct node_port, src_ports); 6213 FREE_LIST(struct node_os, src_oses); 6214 FREE_LIST(struct node_host, dst_hosts); 6215 FREE_LIST(struct node_port, dst_ports); 6216 FREE_LIST(struct node_uid, uids); 6217 FREE_LIST(struct node_gid, gids); 6218 FREE_LIST(struct node_icmp, icmp_types); 6219 FREE_LIST(struct node_host, rpool_hosts); 6220 6221 if (!added) 6222 yyerror("rule expands to no valid combination"); 6223 } 6224 6225 int 6226 expand_skip_interface(struct node_if *interfaces) 6227 { 6228 int errs = 0; 6229 6230 if (!interfaces || (!interfaces->next && !interfaces->not && 6231 !strcmp(interfaces->ifname, "none"))) { 6232 if (pf->opts & PF_OPT_VERBOSE) 6233 printf("set skip on none\n"); 6234 errs = pfctl_set_interface_flags(pf, "", PFI_IFLAG_SKIP, 0); 6235 return (errs); 6236 } 6237 6238 if (pf->opts & PF_OPT_VERBOSE) 6239 printf("set skip on {"); 6240 LOOP_THROUGH(struct node_if, interface, interfaces, 6241 if (pf->opts & PF_OPT_VERBOSE) 6242 printf(" %s", interface->ifname); 6243 if (interface->not) { 6244 yyerror("skip on ! <interface> is not supported"); 6245 errs++; 6246 } else 6247 errs += pfctl_set_interface_flags(pf, 6248 interface->ifname, PFI_IFLAG_SKIP, 1); 6249 ); 6250 if (pf->opts & PF_OPT_VERBOSE) 6251 printf(" }\n"); 6252 6253 FREE_LIST(struct node_if, interfaces); 6254 6255 if (errs) 6256 return (1); 6257 else 6258 return (0); 6259 } 6260 6261 #undef FREE_LIST 6262 #undef LOOP_THROUGH 6263 6264 int 6265 check_rulestate(int desired_state) 6266 { 6267 if (require_order && (rulestate > desired_state)) { 6268 yyerror("Rules must be in order: options, ethernet, " 6269 "normalization, queueing, translation, filtering"); 6270 return (1); 6271 } 6272 rulestate = desired_state; 6273 return (0); 6274 } 6275 6276 int 6277 kw_cmp(const void *k, const void *e) 6278 { 6279 return (strcmp(k, ((const struct keywords *)e)->k_name)); 6280 } 6281 6282 int 6283 lookup(char *s) 6284 { 6285 /* this has to be sorted always */ 6286 static const struct keywords keywords[] = { 6287 { "all", ALL}, 6288 { "allow-opts", ALLOWOPTS}, 6289 { "altq", ALTQ}, 6290 { "anchor", ANCHOR}, 6291 { "antispoof", ANTISPOOF}, 6292 { "any", ANY}, 6293 { "bandwidth", BANDWIDTH}, 6294 { "binat", BINAT}, 6295 { "binat-anchor", BINATANCHOR}, 6296 { "bitmask", BITMASK}, 6297 { "block", BLOCK}, 6298 { "block-policy", BLOCKPOLICY}, 6299 { "bridge-to", BRIDGE_TO}, 6300 { "buckets", BUCKETS}, 6301 { "cbq", CBQ}, 6302 { "code", CODE}, 6303 { "codelq", CODEL}, 6304 { "debug", DEBUG}, 6305 { "divert-reply", DIVERTREPLY}, 6306 { "divert-to", DIVERTTO}, 6307 { "dnpipe", DNPIPE}, 6308 { "dnqueue", DNQUEUE}, 6309 { "drop", DROP}, 6310 { "dup-to", DUPTO}, 6311 { "endpoint-independent", ENDPI}, 6312 { "ether", ETHER}, 6313 { "fail-policy", FAILPOLICY}, 6314 { "fairq", FAIRQ}, 6315 { "fastroute", FASTROUTE}, 6316 { "file", FILENAME}, 6317 { "fingerprints", FINGERPRINTS}, 6318 { "flags", FLAGS}, 6319 { "floating", FLOATING}, 6320 { "flush", FLUSH}, 6321 { "for", FOR}, 6322 { "fragment", FRAGMENT}, 6323 { "from", FROM}, 6324 { "global", GLOBAL}, 6325 { "group", GROUP}, 6326 { "hfsc", HFSC}, 6327 { "hogs", HOGS}, 6328 { "hostid", HOSTID}, 6329 { "icmp-type", ICMPTYPE}, 6330 { "icmp6-type", ICMP6TYPE}, 6331 { "if-bound", IFBOUND}, 6332 { "in", IN}, 6333 { "include", INCLUDE}, 6334 { "inet", INET}, 6335 { "inet6", INET6}, 6336 { "interval", INTERVAL}, 6337 { "keep", KEEP}, 6338 { "keepcounters", KEEPCOUNTERS}, 6339 { "l3", L3}, 6340 { "label", LABEL}, 6341 { "limit", LIMIT}, 6342 { "linkshare", LINKSHARE}, 6343 { "load", LOAD}, 6344 { "log", LOG}, 6345 { "loginterface", LOGINTERFACE}, 6346 { "map-e-portset", MAPEPORTSET}, 6347 { "match", MATCH}, 6348 { "max", MAXIMUM}, 6349 { "max-mss", MAXMSS}, 6350 { "max-src-conn", MAXSRCCONN}, 6351 { "max-src-conn-rate", MAXSRCCONNRATE}, 6352 { "max-src-nodes", MAXSRCNODES}, 6353 { "max-src-states", MAXSRCSTATES}, 6354 { "min-ttl", MINTTL}, 6355 { "modulate", MODULATE}, 6356 { "nat", NAT}, 6357 { "nat-anchor", NATANCHOR}, 6358 { "no", NO}, 6359 { "no-df", NODF}, 6360 { "no-route", NOROUTE}, 6361 { "no-sync", NOSYNC}, 6362 { "on", ON}, 6363 { "optimization", OPTIMIZATION}, 6364 { "os", OS}, 6365 { "out", OUT}, 6366 { "overload", OVERLOAD}, 6367 { "pass", PASS}, 6368 { "pflow", PFLOW}, 6369 { "port", PORT}, 6370 { "prio", PRIO}, 6371 { "priority", PRIORITY}, 6372 { "priq", PRIQ}, 6373 { "probability", PROBABILITY}, 6374 { "proto", PROTO}, 6375 { "qlimit", QLIMIT}, 6376 { "queue", QUEUE}, 6377 { "quick", QUICK}, 6378 { "random", RANDOM}, 6379 { "random-id", RANDOMID}, 6380 { "rdr", RDR}, 6381 { "rdr-anchor", RDRANCHOR}, 6382 { "realtime", REALTIME}, 6383 { "reassemble", REASSEMBLE}, 6384 { "reply-to", REPLYTO}, 6385 { "require-order", REQUIREORDER}, 6386 { "return", RETURN}, 6387 { "return-icmp", RETURNICMP}, 6388 { "return-icmp6", RETURNICMP6}, 6389 { "return-rst", RETURNRST}, 6390 { "ridentifier", RIDENTIFIER}, 6391 { "round-robin", ROUNDROBIN}, 6392 { "route", ROUTE}, 6393 { "route-to", ROUTETO}, 6394 { "rtable", RTABLE}, 6395 { "rule", RULE}, 6396 { "ruleset-optimization", RULESET_OPTIMIZATION}, 6397 { "scrub", SCRUB}, 6398 { "set", SET}, 6399 { "set-tos", SETTOS}, 6400 { "skip", SKIP}, 6401 { "sloppy", SLOPPY}, 6402 { "source-hash", SOURCEHASH}, 6403 { "source-track", SOURCETRACK}, 6404 { "state", STATE}, 6405 { "state-defaults", STATEDEFAULTS}, 6406 { "state-policy", STATEPOLICY}, 6407 { "static-port", STATICPORT}, 6408 { "sticky-address", STICKYADDRESS}, 6409 { "syncookies", SYNCOOKIES}, 6410 { "synproxy", SYNPROXY}, 6411 { "table", TABLE}, 6412 { "tag", TAG}, 6413 { "tagged", TAGGED}, 6414 { "target", TARGET}, 6415 { "tbrsize", TBRSIZE}, 6416 { "timeout", TIMEOUT}, 6417 { "to", TO}, 6418 { "tos", TOS}, 6419 { "ttl", TTL}, 6420 { "upperlimit", UPPERLIMIT}, 6421 { "urpf-failed", URPFFAILED}, 6422 { "user", USER}, 6423 }; 6424 const struct keywords *p; 6425 6426 p = bsearch(s, keywords, sizeof(keywords)/sizeof(keywords[0]), 6427 sizeof(keywords[0]), kw_cmp); 6428 6429 if (p) { 6430 if (debug > 1) 6431 fprintf(stderr, "%s: %d\n", s, p->k_val); 6432 return (p->k_val); 6433 } else { 6434 if (debug > 1) 6435 fprintf(stderr, "string: %s\n", s); 6436 return (STRING); 6437 } 6438 } 6439 6440 #define MAXPUSHBACK 128 6441 6442 static char *parsebuf; 6443 static int parseindex; 6444 static char pushback_buffer[MAXPUSHBACK]; 6445 static int pushback_index = 0; 6446 6447 int 6448 lgetc(int quotec) 6449 { 6450 int c, next; 6451 6452 if (parsebuf) { 6453 /* Read character from the parsebuffer instead of input. */ 6454 if (parseindex >= 0) { 6455 c = parsebuf[parseindex++]; 6456 if (c != '\0') 6457 return (c); 6458 parsebuf = NULL; 6459 } else 6460 parseindex++; 6461 } 6462 6463 if (pushback_index) 6464 return (pushback_buffer[--pushback_index]); 6465 6466 if (quotec) { 6467 if ((c = getc(file->stream)) == EOF) { 6468 yyerror("reached end of file while parsing quoted string"); 6469 if (popfile() == EOF) 6470 return (EOF); 6471 return (quotec); 6472 } 6473 return (c); 6474 } 6475 6476 while ((c = getc(file->stream)) == '\\') { 6477 next = getc(file->stream); 6478 if (next != '\n') { 6479 c = next; 6480 break; 6481 } 6482 yylval.lineno = file->lineno; 6483 file->lineno++; 6484 } 6485 6486 while (c == EOF) { 6487 if (popfile() == EOF) 6488 return (EOF); 6489 c = getc(file->stream); 6490 } 6491 return (c); 6492 } 6493 6494 int 6495 lungetc(int c) 6496 { 6497 if (c == EOF) 6498 return (EOF); 6499 if (parsebuf) { 6500 parseindex--; 6501 if (parseindex >= 0) 6502 return (c); 6503 } 6504 if (pushback_index < MAXPUSHBACK-1) 6505 return (pushback_buffer[pushback_index++] = c); 6506 else 6507 return (EOF); 6508 } 6509 6510 int 6511 findeol(void) 6512 { 6513 int c; 6514 6515 parsebuf = NULL; 6516 6517 /* skip to either EOF or the first real EOL */ 6518 while (1) { 6519 if (pushback_index) 6520 c = pushback_buffer[--pushback_index]; 6521 else 6522 c = lgetc(0); 6523 if (c == '\n') { 6524 file->lineno++; 6525 break; 6526 } 6527 if (c == EOF) 6528 break; 6529 } 6530 return (ERROR); 6531 } 6532 6533 int 6534 yylex(void) 6535 { 6536 char buf[8096]; 6537 char *p, *val; 6538 int quotec, next, c; 6539 int token; 6540 6541 top: 6542 p = buf; 6543 while ((c = lgetc(0)) == ' ' || c == '\t') 6544 ; /* nothing */ 6545 6546 yylval.lineno = file->lineno; 6547 if (c == '#') 6548 while ((c = lgetc(0)) != '\n' && c != EOF) 6549 ; /* nothing */ 6550 if (c == '$' && parsebuf == NULL) { 6551 while (1) { 6552 if ((c = lgetc(0)) == EOF) 6553 return (0); 6554 6555 if (p + 1 >= buf + sizeof(buf) - 1) { 6556 yyerror("string too long"); 6557 return (findeol()); 6558 } 6559 if (isalnum(c) || c == '_') { 6560 *p++ = (char)c; 6561 continue; 6562 } 6563 *p = '\0'; 6564 lungetc(c); 6565 break; 6566 } 6567 val = symget(buf); 6568 if (val == NULL) { 6569 yyerror("macro '%s' not defined", buf); 6570 return (findeol()); 6571 } 6572 parsebuf = val; 6573 parseindex = 0; 6574 goto top; 6575 } 6576 6577 switch (c) { 6578 case '\'': 6579 case '"': 6580 quotec = c; 6581 while (1) { 6582 if ((c = lgetc(quotec)) == EOF) 6583 return (0); 6584 if (c == '\n') { 6585 file->lineno++; 6586 continue; 6587 } else if (c == '\\') { 6588 if ((next = lgetc(quotec)) == EOF) 6589 return (0); 6590 if (next == quotec || c == ' ' || c == '\t') 6591 c = next; 6592 else if (next == '\n') { 6593 file->lineno++; 6594 continue; 6595 } 6596 else 6597 lungetc(next); 6598 } else if (c == quotec) { 6599 *p = '\0'; 6600 break; 6601 } 6602 if (p + 1 >= buf + sizeof(buf) - 1) { 6603 yyerror("string too long"); 6604 return (findeol()); 6605 } 6606 *p++ = (char)c; 6607 } 6608 yylval.v.string = strdup(buf); 6609 if (yylval.v.string == NULL) 6610 err(1, "yylex: strdup"); 6611 return (STRING); 6612 case '<': 6613 next = lgetc(0); 6614 if (next == '>') { 6615 yylval.v.i = PF_OP_XRG; 6616 return (PORTBINARY); 6617 } 6618 lungetc(next); 6619 break; 6620 case '>': 6621 next = lgetc(0); 6622 if (next == '<') { 6623 yylval.v.i = PF_OP_IRG; 6624 return (PORTBINARY); 6625 } 6626 lungetc(next); 6627 break; 6628 case '-': 6629 next = lgetc(0); 6630 if (next == '>') 6631 return (ARROW); 6632 lungetc(next); 6633 break; 6634 } 6635 6636 #define allowed_to_end_number(x) \ 6637 (isspace(x) || x == ')' || x ==',' || x == '/' || x == '}' || x == '=') 6638 6639 if (c == '-' || isdigit(c)) { 6640 do { 6641 *p++ = c; 6642 if ((unsigned)(p-buf) >= sizeof(buf)) { 6643 yyerror("string too long"); 6644 return (findeol()); 6645 } 6646 } while ((c = lgetc(0)) != EOF && isdigit(c)); 6647 lungetc(c); 6648 if (p == buf + 1 && buf[0] == '-') 6649 goto nodigits; 6650 if (c == EOF || allowed_to_end_number(c)) { 6651 const char *errstr = NULL; 6652 6653 *p = '\0'; 6654 yylval.v.number = strtonum(buf, LLONG_MIN, 6655 LLONG_MAX, &errstr); 6656 if (errstr) { 6657 yyerror("\"%s\" invalid number: %s", 6658 buf, errstr); 6659 return (findeol()); 6660 } 6661 return (NUMBER); 6662 } else { 6663 nodigits: 6664 while (p > buf + 1) 6665 lungetc(*--p); 6666 c = *--p; 6667 if (c == '-') 6668 return (c); 6669 } 6670 } 6671 6672 #define allowed_in_string(x) \ 6673 (isalnum(x) || (ispunct(x) && x != '(' && x != ')' && \ 6674 x != '{' && x != '}' && x != '<' && x != '>' && \ 6675 x != '!' && x != '=' && x != '/' && x != '#' && \ 6676 x != ',')) 6677 6678 if (isalnum(c) || c == ':' || c == '_') { 6679 do { 6680 *p++ = c; 6681 if ((unsigned)(p-buf) >= sizeof(buf)) { 6682 yyerror("string too long"); 6683 return (findeol()); 6684 } 6685 } while ((c = lgetc(0)) != EOF && (allowed_in_string(c))); 6686 lungetc(c); 6687 *p = '\0'; 6688 if ((token = lookup(buf)) == STRING) 6689 if ((yylval.v.string = strdup(buf)) == NULL) 6690 err(1, "yylex: strdup"); 6691 return (token); 6692 } 6693 if (c == '\n') { 6694 yylval.lineno = file->lineno; 6695 file->lineno++; 6696 } 6697 if (c == EOF) 6698 return (0); 6699 return (c); 6700 } 6701 6702 int 6703 check_file_secrecy(int fd, const char *fname) 6704 { 6705 struct stat st; 6706 6707 if (fstat(fd, &st)) { 6708 warn("cannot stat %s", fname); 6709 return (-1); 6710 } 6711 if (st.st_uid != 0 && st.st_uid != getuid()) { 6712 warnx("%s: owner not root or current user", fname); 6713 return (-1); 6714 } 6715 if (st.st_mode & (S_IRWXG | S_IRWXO)) { 6716 warnx("%s: group/world readable/writeable", fname); 6717 return (-1); 6718 } 6719 return (0); 6720 } 6721 6722 struct file * 6723 pushfile(const char *name, int secret) 6724 { 6725 struct file *nfile; 6726 6727 if ((nfile = calloc(1, sizeof(struct file))) == NULL || 6728 (nfile->name = strdup(name)) == NULL) { 6729 warn("malloc"); 6730 return (NULL); 6731 } 6732 if (TAILQ_FIRST(&files) == NULL && strcmp(nfile->name, "-") == 0) { 6733 nfile->stream = stdin; 6734 free(nfile->name); 6735 if ((nfile->name = strdup("stdin")) == NULL) { 6736 warn("strdup"); 6737 free(nfile); 6738 return (NULL); 6739 } 6740 } else if ((nfile->stream = fopen(nfile->name, "r")) == NULL) { 6741 warn("%s", nfile->name); 6742 free(nfile->name); 6743 free(nfile); 6744 return (NULL); 6745 } else if (secret && 6746 check_file_secrecy(fileno(nfile->stream), nfile->name)) { 6747 fclose(nfile->stream); 6748 free(nfile->name); 6749 free(nfile); 6750 return (NULL); 6751 } 6752 nfile->lineno = 1; 6753 TAILQ_INSERT_TAIL(&files, nfile, entry); 6754 return (nfile); 6755 } 6756 6757 int 6758 popfile(void) 6759 { 6760 struct file *prev; 6761 6762 if ((prev = TAILQ_PREV(file, files, entry)) != NULL) { 6763 prev->errors += file->errors; 6764 TAILQ_REMOVE(&files, file, entry); 6765 fclose(file->stream); 6766 free(file->name); 6767 free(file); 6768 file = prev; 6769 return (0); 6770 } 6771 return (EOF); 6772 } 6773 6774 int 6775 parse_config(char *filename, struct pfctl *xpf) 6776 { 6777 int errors = 0; 6778 struct sym *sym; 6779 6780 pf = xpf; 6781 errors = 0; 6782 rulestate = PFCTL_STATE_NONE; 6783 returnicmpdefault = (ICMP_UNREACH << 8) | ICMP_UNREACH_PORT; 6784 returnicmp6default = 6785 (ICMP6_DST_UNREACH << 8) | ICMP6_DST_UNREACH_NOPORT; 6786 blockpolicy = PFRULE_DROP; 6787 failpolicy = PFRULE_DROP; 6788 require_order = 1; 6789 6790 if ((file = pushfile(filename, 0)) == NULL) { 6791 warn("cannot open the main config file!"); 6792 return (-1); 6793 } 6794 6795 yyparse(); 6796 errors = file->errors; 6797 popfile(); 6798 6799 /* Free macros and check which have not been used. */ 6800 while ((sym = TAILQ_FIRST(&symhead))) { 6801 if ((pf->opts & PF_OPT_VERBOSE2) && !sym->used) 6802 fprintf(stderr, "warning: macro '%s' not " 6803 "used\n", sym->nam); 6804 free(sym->nam); 6805 free(sym->val); 6806 TAILQ_REMOVE(&symhead, sym, entry); 6807 free(sym); 6808 } 6809 6810 return (errors ? -1 : 0); 6811 } 6812 6813 int 6814 symset(const char *nam, const char *val, int persist) 6815 { 6816 struct sym *sym; 6817 6818 for (sym = TAILQ_FIRST(&symhead); sym && strcmp(nam, sym->nam); 6819 sym = TAILQ_NEXT(sym, entry)) 6820 ; /* nothing */ 6821 6822 if (sym != NULL) { 6823 if (sym->persist == 1) 6824 return (0); 6825 else { 6826 free(sym->nam); 6827 free(sym->val); 6828 TAILQ_REMOVE(&symhead, sym, entry); 6829 free(sym); 6830 } 6831 } 6832 if ((sym = calloc(1, sizeof(*sym))) == NULL) 6833 return (-1); 6834 6835 sym->nam = strdup(nam); 6836 if (sym->nam == NULL) { 6837 free(sym); 6838 return (-1); 6839 } 6840 sym->val = strdup(val); 6841 if (sym->val == NULL) { 6842 free(sym->nam); 6843 free(sym); 6844 return (-1); 6845 } 6846 sym->used = 0; 6847 sym->persist = persist; 6848 TAILQ_INSERT_TAIL(&symhead, sym, entry); 6849 return (0); 6850 } 6851 6852 int 6853 pfctl_cmdline_symset(char *s) 6854 { 6855 char *sym, *val; 6856 int ret; 6857 6858 if ((val = strrchr(s, '=')) == NULL) 6859 return (-1); 6860 6861 if ((sym = malloc(strlen(s) - strlen(val) + 1)) == NULL) 6862 err(1, "pfctl_cmdline_symset: malloc"); 6863 6864 strlcpy(sym, s, strlen(s) - strlen(val) + 1); 6865 6866 ret = symset(sym, val + 1, 1); 6867 free(sym); 6868 6869 return (ret); 6870 } 6871 6872 char * 6873 symget(const char *nam) 6874 { 6875 struct sym *sym; 6876 6877 TAILQ_FOREACH(sym, &symhead, entry) 6878 if (strcmp(nam, sym->nam) == 0) { 6879 sym->used = 1; 6880 return (sym->val); 6881 } 6882 return (NULL); 6883 } 6884 6885 void 6886 mv_rules(struct pfctl_ruleset *src, struct pfctl_ruleset *dst) 6887 { 6888 int i; 6889 struct pfctl_rule *r; 6890 6891 for (i = 0; i < PF_RULESET_MAX; ++i) { 6892 while ((r = TAILQ_FIRST(src->rules[i].active.ptr)) 6893 != NULL) { 6894 TAILQ_REMOVE(src->rules[i].active.ptr, r, entries); 6895 TAILQ_INSERT_TAIL(dst->rules[i].active.ptr, r, entries); 6896 dst->anchor->match++; 6897 } 6898 src->anchor->match = 0; 6899 while ((r = TAILQ_FIRST(src->rules[i].inactive.ptr)) 6900 != NULL) { 6901 TAILQ_REMOVE(src->rules[i].inactive.ptr, r, entries); 6902 TAILQ_INSERT_TAIL(dst->rules[i].inactive.ptr, 6903 r, entries); 6904 } 6905 } 6906 } 6907 6908 void 6909 mv_eth_rules(struct pfctl_eth_ruleset *src, struct pfctl_eth_ruleset *dst) 6910 { 6911 struct pfctl_eth_rule *r; 6912 6913 while ((r = TAILQ_FIRST(&src->rules)) != NULL) { 6914 TAILQ_REMOVE(&src->rules, r, entries); 6915 TAILQ_INSERT_TAIL(&dst->rules, r, entries); 6916 dst->anchor->match++; 6917 } 6918 src->anchor->match = 0; 6919 } 6920 6921 void 6922 decide_address_family(struct node_host *n, sa_family_t *af) 6923 { 6924 if (*af != 0 || n == NULL) 6925 return; 6926 *af = n->af; 6927 while ((n = n->next) != NULL) { 6928 if (n->af != *af) { 6929 *af = 0; 6930 return; 6931 } 6932 } 6933 } 6934 6935 void 6936 remove_invalid_hosts(struct node_host **nh, sa_family_t *af) 6937 { 6938 struct node_host *n = *nh, *prev = NULL; 6939 6940 while (n != NULL) { 6941 if (*af && n->af && n->af != *af) { 6942 /* unlink and free n */ 6943 struct node_host *next = n->next; 6944 6945 /* adjust tail pointer */ 6946 if (n == (*nh)->tail) 6947 (*nh)->tail = prev; 6948 /* adjust previous node's next pointer */ 6949 if (prev == NULL) 6950 *nh = next; 6951 else 6952 prev->next = next; 6953 /* free node */ 6954 if (n->ifname != NULL) 6955 free(n->ifname); 6956 free(n); 6957 n = next; 6958 } else { 6959 if (n->af && !*af) 6960 *af = n->af; 6961 prev = n; 6962 n = n->next; 6963 } 6964 } 6965 } 6966 6967 int 6968 invalid_redirect(struct node_host *nh, sa_family_t af) 6969 { 6970 if (!af) { 6971 struct node_host *n; 6972 6973 /* tables and dyniftl are ok without an address family */ 6974 for (n = nh; n != NULL; n = n->next) { 6975 if (n->addr.type != PF_ADDR_TABLE && 6976 n->addr.type != PF_ADDR_DYNIFTL) { 6977 yyerror("address family not given and " 6978 "translation address expands to multiple " 6979 "address families"); 6980 return (1); 6981 } 6982 } 6983 } 6984 if (nh == NULL) { 6985 yyerror("no translation address with matching address family " 6986 "found."); 6987 return (1); 6988 } 6989 return (0); 6990 } 6991 6992 int 6993 atoul(char *s, u_long *ulvalp) 6994 { 6995 u_long ulval; 6996 char *ep; 6997 6998 errno = 0; 6999 ulval = strtoul(s, &ep, 0); 7000 if (s[0] == '\0' || *ep != '\0') 7001 return (-1); 7002 if (errno == ERANGE && ulval == ULONG_MAX) 7003 return (-1); 7004 *ulvalp = ulval; 7005 return (0); 7006 } 7007 7008 int 7009 getservice(char *n) 7010 { 7011 struct servent *s; 7012 u_long ulval; 7013 7014 if (atoul(n, &ulval) == 0) { 7015 if (ulval > 65535) { 7016 yyerror("illegal port value %lu", ulval); 7017 return (-1); 7018 } 7019 return (htons(ulval)); 7020 } else { 7021 s = getservbyname(n, "tcp"); 7022 if (s == NULL) 7023 s = getservbyname(n, "udp"); 7024 if (s == NULL) 7025 s = getservbyname(n, "sctp"); 7026 if (s == NULL) { 7027 yyerror("unknown port %s", n); 7028 return (-1); 7029 } 7030 return (s->s_port); 7031 } 7032 } 7033 7034 int 7035 rule_label(struct pfctl_rule *r, char *s[PF_RULE_MAX_LABEL_COUNT]) 7036 { 7037 for (int i = 0; i < PF_RULE_MAX_LABEL_COUNT; i++) { 7038 if (s[i] == NULL) 7039 return (0); 7040 7041 if (strlcpy(r->label[i], s[i], sizeof(r->label[0])) >= 7042 sizeof(r->label[0])) { 7043 yyerror("rule label too long (max %d chars)", 7044 sizeof(r->label[0])-1); 7045 return (-1); 7046 } 7047 } 7048 return (0); 7049 } 7050 7051 int 7052 eth_rule_label(struct pfctl_eth_rule *r, char *s[PF_RULE_MAX_LABEL_COUNT]) 7053 { 7054 for (int i = 0; i < PF_RULE_MAX_LABEL_COUNT; i++) { 7055 if (s[i] == NULL) 7056 return (0); 7057 7058 if (strlcpy(r->label[i], s[i], sizeof(r->label[0])) >= 7059 sizeof(r->label[0])) { 7060 yyerror("rule label too long (max %d chars)", 7061 sizeof(r->label[0])-1); 7062 return (-1); 7063 } 7064 } 7065 return (0); 7066 } 7067 7068 u_int16_t 7069 parseicmpspec(char *w, sa_family_t af) 7070 { 7071 const struct icmpcodeent *p; 7072 u_long ulval; 7073 u_int8_t icmptype; 7074 7075 if (af == AF_INET) 7076 icmptype = returnicmpdefault >> 8; 7077 else 7078 icmptype = returnicmp6default >> 8; 7079 7080 if (atoul(w, &ulval) == -1) { 7081 if ((p = geticmpcodebyname(icmptype, w, af)) == NULL) { 7082 yyerror("unknown icmp code %s", w); 7083 return (0); 7084 } 7085 ulval = p->code; 7086 } 7087 if (ulval > 255) { 7088 yyerror("invalid icmp code %lu", ulval); 7089 return (0); 7090 } 7091 return (icmptype << 8 | ulval); 7092 } 7093 7094 int 7095 parseport(char *port, struct range *r, int extensions) 7096 { 7097 char *p = strchr(port, ':'); 7098 7099 if (p == NULL) { 7100 if ((r->a = getservice(port)) == -1) 7101 return (-1); 7102 r->b = 0; 7103 r->t = PF_OP_NONE; 7104 return (0); 7105 } 7106 if ((extensions & PPORT_STAR) && !strcmp(p+1, "*")) { 7107 *p = 0; 7108 if ((r->a = getservice(port)) == -1) 7109 return (-1); 7110 r->b = 0; 7111 r->t = PF_OP_IRG; 7112 return (0); 7113 } 7114 if ((extensions & PPORT_RANGE)) { 7115 *p++ = 0; 7116 if ((r->a = getservice(port)) == -1 || 7117 (r->b = getservice(p)) == -1) 7118 return (-1); 7119 if (r->a == r->b) { 7120 r->b = 0; 7121 r->t = PF_OP_NONE; 7122 } else 7123 r->t = PF_OP_RRG; 7124 return (0); 7125 } 7126 return (-1); 7127 } 7128 7129 int 7130 pfctl_load_anchors(int dev, struct pfctl *pf, struct pfr_buffer *trans) 7131 { 7132 struct loadanchors *la; 7133 7134 TAILQ_FOREACH(la, &loadanchorshead, entries) { 7135 if (pf->opts & PF_OPT_VERBOSE) 7136 fprintf(stderr, "\nLoading anchor %s from %s\n", 7137 la->anchorname, la->filename); 7138 if (pfctl_rules(dev, la->filename, pf->opts, pf->optimize, 7139 la->anchorname, trans) == -1) 7140 return (-1); 7141 } 7142 7143 return (0); 7144 } 7145 7146 int 7147 kw_casecmp(const void *k, const void *e) 7148 { 7149 return (strcasecmp(k, ((const struct keywords *)e)->k_name)); 7150 } 7151 7152 int 7153 map_tos(char *s, int *val) 7154 { 7155 /* DiffServ Codepoints and other TOS mappings */ 7156 const struct keywords toswords[] = { 7157 { "af11", IPTOS_DSCP_AF11 }, 7158 { "af12", IPTOS_DSCP_AF12 }, 7159 { "af13", IPTOS_DSCP_AF13 }, 7160 { "af21", IPTOS_DSCP_AF21 }, 7161 { "af22", IPTOS_DSCP_AF22 }, 7162 { "af23", IPTOS_DSCP_AF23 }, 7163 { "af31", IPTOS_DSCP_AF31 }, 7164 { "af32", IPTOS_DSCP_AF32 }, 7165 { "af33", IPTOS_DSCP_AF33 }, 7166 { "af41", IPTOS_DSCP_AF41 }, 7167 { "af42", IPTOS_DSCP_AF42 }, 7168 { "af43", IPTOS_DSCP_AF43 }, 7169 { "critical", IPTOS_PREC_CRITIC_ECP }, 7170 { "cs0", IPTOS_DSCP_CS0 }, 7171 { "cs1", IPTOS_DSCP_CS1 }, 7172 { "cs2", IPTOS_DSCP_CS2 }, 7173 { "cs3", IPTOS_DSCP_CS3 }, 7174 { "cs4", IPTOS_DSCP_CS4 }, 7175 { "cs5", IPTOS_DSCP_CS5 }, 7176 { "cs6", IPTOS_DSCP_CS6 }, 7177 { "cs7", IPTOS_DSCP_CS7 }, 7178 { "ef", IPTOS_DSCP_EF }, 7179 { "inetcontrol", IPTOS_PREC_INTERNETCONTROL }, 7180 { "lowdelay", IPTOS_LOWDELAY }, 7181 { "netcontrol", IPTOS_PREC_NETCONTROL }, 7182 { "reliability", IPTOS_RELIABILITY }, 7183 { "throughput", IPTOS_THROUGHPUT }, 7184 { "va", IPTOS_DSCP_VA } 7185 }; 7186 const struct keywords *p; 7187 7188 p = bsearch(s, toswords, sizeof(toswords)/sizeof(toswords[0]), 7189 sizeof(toswords[0]), kw_casecmp); 7190 7191 if (p) { 7192 *val = p->k_val; 7193 return (1); 7194 } 7195 return (0); 7196 } 7197 7198 int 7199 rt_tableid_max(void) 7200 { 7201 #ifdef __FreeBSD__ 7202 int fibs; 7203 size_t l = sizeof(fibs); 7204 7205 if (sysctlbyname("net.fibs", &fibs, &l, NULL, 0) == -1) 7206 fibs = 16; /* XXX RT_MAXFIBS, at least limit it some. */ 7207 /* 7208 * As the OpenBSD code only compares > and not >= we need to adjust 7209 * here given we only accept values of 0..n and want to avoid #ifdefs 7210 * in the grammar. 7211 */ 7212 return (fibs - 1); 7213 #else 7214 return (RT_TABLEID_MAX); 7215 #endif 7216 } 7217 7218 struct node_mac* 7219 node_mac_from_string(const char *str) 7220 { 7221 struct node_mac *m; 7222 7223 m = calloc(1, sizeof(struct node_mac)); 7224 if (m == NULL) 7225 err(1, "mac: calloc"); 7226 7227 if (sscanf(str, "%02hhx:%02hhx:%02hhx:%02hhx:%02hhx:%02hhx", 7228 &m->mac[0], &m->mac[1], &m->mac[2], &m->mac[3], &m->mac[4], 7229 &m->mac[5]) != 6) { 7230 free(m); 7231 yyerror("invalid MAC address"); 7232 return (NULL); 7233 } 7234 7235 memset(m->mask, 0xff, ETHER_ADDR_LEN); 7236 m->isset = true; 7237 m->next = NULL; 7238 m->tail = m; 7239 7240 return (m); 7241 } 7242 7243 struct node_mac* 7244 node_mac_from_string_masklen(const char *str, int masklen) 7245 { 7246 struct node_mac *m; 7247 7248 if (masklen < 0 || masklen > (ETHER_ADDR_LEN * 8)) { 7249 yyerror("invalid MAC mask length"); 7250 return (NULL); 7251 } 7252 7253 m = node_mac_from_string(str); 7254 if (m == NULL) 7255 return (NULL); 7256 7257 memset(m->mask, 0, ETHER_ADDR_LEN); 7258 for (int i = 0; i < masklen; i++) 7259 m->mask[i / 8] |= 1 << (i % 8); 7260 7261 return (m); 7262 } 7263 7264 struct node_mac* 7265 node_mac_from_string_mask(const char *str, const char *mask) 7266 { 7267 struct node_mac *m; 7268 7269 m = node_mac_from_string(str); 7270 if (m == NULL) 7271 return (NULL); 7272 7273 if (sscanf(mask, "%02hhx:%02hhx:%02hhx:%02hhx:%02hhx:%02hhx", 7274 &m->mask[0], &m->mask[1], &m->mask[2], &m->mask[3], &m->mask[4], 7275 &m->mask[5]) != 6) { 7276 free(m); 7277 yyerror("invalid MAC mask"); 7278 return (NULL); 7279 } 7280 7281 return (m); 7282 } 7283