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