parse.y revision 1.10
1 /* $NetBSD: parse.y,v 1.10 2008/05/15 04:16:00 dyoung Exp $ */ 2 /* $OpenBSD: parse.y,v 1.482 2005/03/07 13:20:03 henning Exp $ */ 3 4 /* 5 * Copyright (c) 2001 Markus Friedl. All rights reserved. 6 * Copyright (c) 2001 Daniel Hartmeier. All rights reserved. 7 * Copyright (c) 2001 Theo de Raadt. All rights reserved. 8 * Copyright (c) 2002,2003 Henning Brauer. All rights reserved. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 20 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 21 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 22 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 23 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 24 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 28 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 29 * 30 * This material is based upon work partially supported by NSF under 31 * Contract No. NSF CNS-0626584. 32 */ 33 %{ 34 #include <sys/types.h> 35 #include <sys/socket.h> 36 #include <net/if.h> 37 #include <netinet/in.h> 38 #include <netinet/in_systm.h> 39 #include <netinet/ip.h> 40 #include <netinet/ip_icmp.h> 41 #include <netinet/icmp6.h> 42 #include <net/pfvar.h> 43 #include <arpa/inet.h> 44 #include <altq/altq.h> 45 #include <altq/altq_cbq.h> 46 #include <altq/altq_priq.h> 47 #include <altq/altq_hfsc.h> 48 49 #include <stdio.h> 50 #include <stdlib.h> 51 #include <netdb.h> 52 #include <stdarg.h> 53 #include <errno.h> 54 #include <string.h> 55 #include <ctype.h> 56 #include <math.h> 57 #include <err.h> 58 #include <limits.h> 59 #include <pwd.h> 60 #include <grp.h> 61 #include <md5.h> 62 63 #include "pfctl_parser.h" 64 #include "pfctl.h" 65 66 static struct pfctl *pf = NULL; 67 static FILE *fin = NULL; 68 static int debug = 0; 69 static int lineno = 1; 70 static int errors = 0; 71 static int rulestate = 0; 72 static u_int16_t returnicmpdefault = 73 (ICMP_UNREACH << 8) | ICMP_UNREACH_PORT; 74 static u_int16_t returnicmp6default = 75 (ICMP6_DST_UNREACH << 8) | ICMP6_DST_UNREACH_NOPORT; 76 static int blockpolicy = PFRULE_DROP; 77 static int require_order = 1; 78 static int default_statelock; 79 80 enum { 81 PFCTL_STATE_NONE, 82 PFCTL_STATE_OPTION, 83 PFCTL_STATE_SCRUB, 84 PFCTL_STATE_QUEUE, 85 PFCTL_STATE_NAT, 86 PFCTL_STATE_FILTER 87 }; 88 89 struct node_proto { 90 u_int8_t proto; 91 struct node_proto *next; 92 struct node_proto *tail; 93 }; 94 95 struct node_port { 96 u_int16_t port[2]; 97 u_int8_t op; 98 struct node_port *next; 99 struct node_port *tail; 100 }; 101 102 struct node_uid { 103 uid_t uid[2]; 104 u_int8_t op; 105 struct node_uid *next; 106 struct node_uid *tail; 107 }; 108 109 struct node_gid { 110 gid_t gid[2]; 111 u_int8_t op; 112 struct node_gid *next; 113 struct node_gid *tail; 114 }; 115 116 struct node_icmp { 117 u_int8_t code; 118 u_int8_t type; 119 u_int8_t proto; 120 struct node_icmp *next; 121 struct node_icmp *tail; 122 }; 123 124 enum { PF_STATE_OPT_MAX, PF_STATE_OPT_NOSYNC, PF_STATE_OPT_SRCTRACK, 125 PF_STATE_OPT_MAX_SRC_STATES, PF_STATE_OPT_MAX_SRC_CONN, 126 PF_STATE_OPT_MAX_SRC_CONN_RATE, PF_STATE_OPT_MAX_SRC_NODES, 127 PF_STATE_OPT_OVERLOAD, PF_STATE_OPT_STATELOCK, 128 PF_STATE_OPT_TIMEOUT }; 129 130 enum { PF_SRCTRACK_NONE, PF_SRCTRACK, PF_SRCTRACK_GLOBAL, PF_SRCTRACK_RULE }; 131 132 struct node_state_opt { 133 int type; 134 union { 135 u_int32_t max_states; 136 u_int32_t max_src_states; 137 u_int32_t max_src_conn; 138 struct { 139 u_int32_t limit; 140 u_int32_t seconds; 141 } max_src_conn_rate; 142 struct { 143 u_int8_t flush; 144 char tblname[PF_TABLE_NAME_SIZE]; 145 } overload; 146 u_int32_t max_src_nodes; 147 u_int8_t src_track; 148 u_int32_t statelock; 149 struct { 150 int number; 151 u_int32_t seconds; 152 } timeout; 153 } data; 154 struct node_state_opt *next; 155 struct node_state_opt *tail; 156 }; 157 158 struct peer { 159 struct node_host *host; 160 struct node_port *port; 161 }; 162 163 struct node_queue { 164 char queue[PF_QNAME_SIZE]; 165 char parent[PF_QNAME_SIZE]; 166 char ifname[IFNAMSIZ]; 167 int scheduler; 168 struct node_queue *next; 169 struct node_queue *tail; 170 } *queues = NULL; 171 172 struct node_qassign { 173 char *qname; 174 char *pqname; 175 }; 176 177 struct filter_opts { 178 int marker; 179 #define FOM_FLAGS 0x01 180 #define FOM_ICMP 0x02 181 #define FOM_TOS 0x04 182 #define FOM_KEEP 0x08 183 #define FOM_SRCTRACK 0x10 184 struct node_uid *uid; 185 struct node_gid *gid; 186 struct { 187 u_int8_t b1; 188 u_int8_t b2; 189 u_int16_t w; 190 u_int16_t w2; 191 } flags; 192 struct node_icmp *icmpspec; 193 u_int32_t tos; 194 u_int32_t prob; 195 struct { 196 int action; 197 struct node_state_opt *options; 198 } keep; 199 int fragment; 200 int allowopts; 201 char *label; 202 struct node_qassign queues; 203 char *tag; 204 char *match_tag; 205 u_int8_t match_tag_not; 206 } filter_opts; 207 208 struct antispoof_opts { 209 char *label; 210 } antispoof_opts; 211 212 struct scrub_opts { 213 int marker; 214 #define SOM_MINTTL 0x01 215 #define SOM_MAXMSS 0x02 216 #define SOM_FRAGCACHE 0x04 217 int nodf; 218 int minttl; 219 int maxmss; 220 int fragcache; 221 int randomid; 222 int reassemble_tcp; 223 } scrub_opts; 224 225 struct queue_opts { 226 int marker; 227 #define QOM_BWSPEC 0x01 228 #define QOM_SCHEDULER 0x02 229 #define QOM_PRIORITY 0x04 230 #define QOM_TBRSIZE 0x08 231 #define QOM_QLIMIT 0x10 232 struct node_queue_bw queue_bwspec; 233 struct node_queue_opt scheduler; 234 int priority; 235 int tbrsize; 236 int qlimit; 237 } queue_opts; 238 239 struct table_opts { 240 int flags; 241 int init_addr; 242 struct node_tinithead init_nodes; 243 } table_opts; 244 245 struct pool_opts { 246 int marker; 247 #define POM_TYPE 0x01 248 #define POM_STICKYADDRESS 0x02 249 u_int8_t opts; 250 int type; 251 int staticport; 252 struct pf_poolhashkey *key; 253 254 } pool_opts; 255 256 257 struct node_hfsc_opts hfsc_opts; 258 259 int yyerror(const char *, ...); 260 int disallow_table(struct node_host *, const char *); 261 int disallow_alias(struct node_host *, const char *); 262 int rule_consistent(struct pf_rule *); 263 int filter_consistent(struct pf_rule *); 264 int nat_consistent(struct pf_rule *); 265 int rdr_consistent(struct pf_rule *); 266 int process_tabledef(char *, struct table_opts *); 267 int yyparse(void); 268 void expand_label_str(char *, size_t, const char *, const char *); 269 void expand_label_if(const char *, char *, size_t, const char *); 270 void expand_label_addr(const char *, char *, size_t, u_int8_t, 271 struct node_host *); 272 void expand_label_port(const char *, char *, size_t, struct node_port *); 273 void expand_label_proto(const char *, char *, size_t, u_int8_t); 274 void expand_label_nr(const char *, char *, size_t); 275 void expand_label(char *, size_t, const char *, u_int8_t, struct node_host *, 276 struct node_port *, struct node_host *, struct node_port *, 277 u_int8_t); 278 void expand_rule(struct pf_rule *, struct node_if *, struct node_host *, 279 struct node_proto *, struct node_os*, struct node_host *, 280 struct node_port *, struct node_host *, struct node_port *, 281 struct node_uid *, struct node_gid *, struct node_icmp *, 282 const char *); 283 int expand_altq(struct pf_altq *, struct node_if *, struct node_queue *, 284 struct node_queue_bw bwspec, struct node_queue_opt *); 285 int expand_queue(struct pf_altq *, struct node_if *, struct node_queue *, 286 struct node_queue_bw, struct node_queue_opt *); 287 int expand_skip_interface(struct node_if *); 288 289 int check_rulestate(int); 290 int kw_cmp(const void *, const void *); 291 int lookup(char *); 292 int lgetc(FILE *); 293 int lungetc(int); 294 int findeol(void); 295 int yylex(void); 296 int atoul(char *, u_long *); 297 int getservice(char *); 298 int rule_label(struct pf_rule *, char *); 299 300 TAILQ_HEAD(symhead, sym) symhead = TAILQ_HEAD_INITIALIZER(symhead); 301 struct sym { 302 TAILQ_ENTRY(sym) entries; 303 int used; 304 int persist; 305 char *nam; 306 char *val; 307 }; 308 309 310 int symset(const char *, const char *, int); 311 char *symget(const char *); 312 313 void decide_address_family(struct node_host *, sa_family_t *); 314 void remove_invalid_hosts(struct node_host **, sa_family_t *); 315 int invalid_redirect(struct node_host *, sa_family_t); 316 u_int16_t parseicmpspec(char *, sa_family_t); 317 318 TAILQ_HEAD(loadanchorshead, loadanchors) 319 loadanchorshead = TAILQ_HEAD_INITIALIZER(loadanchorshead); 320 321 struct loadanchors { 322 TAILQ_ENTRY(loadanchors) entries; 323 char *anchorname; 324 char *filename; 325 }; 326 327 typedef struct { 328 union { 329 u_int32_t number; 330 int i; 331 char *string; 332 struct { 333 u_int8_t b1; 334 u_int8_t b2; 335 u_int16_t w; 336 u_int16_t w2; 337 } b; 338 struct range { 339 int a; 340 int b; 341 int t; 342 } range; 343 struct node_if *interface; 344 struct node_proto *proto; 345 struct node_icmp *icmp; 346 struct node_host *host; 347 struct node_os *os; 348 struct node_port *port; 349 struct node_uid *uid; 350 struct node_gid *gid; 351 struct node_state_opt *state_opt; 352 struct peer peer; 353 struct { 354 struct peer src, dst; 355 struct node_os *src_os; 356 } fromto; 357 struct { 358 struct node_host *host; 359 u_int8_t rt; 360 u_int8_t pool_opts; 361 sa_family_t af; 362 struct pf_poolhashkey *key; 363 } route; 364 struct redirection { 365 struct node_host *host; 366 struct range rport; 367 } *redirection; 368 struct { 369 int action; 370 struct node_state_opt *options; 371 } keep_state; 372 struct { 373 u_int8_t log; 374 u_int8_t quick; 375 } logquick; 376 struct { 377 int neg; 378 char *name; 379 } tagged; 380 struct pf_poolhashkey *hashkey; 381 struct node_queue *queue; 382 struct node_queue_opt queue_options; 383 struct node_queue_bw queue_bwspec; 384 struct node_qassign qassign; 385 struct filter_opts filter_opts; 386 struct antispoof_opts antispoof_opts; 387 struct queue_opts queue_opts; 388 struct scrub_opts scrub_opts; 389 struct table_opts table_opts; 390 struct pool_opts pool_opts; 391 struct node_hfsc_opts hfsc_opts; 392 } v; 393 int lineno; 394 } YYSTYPE; 395 396 #define DYNIF_MULTIADDR(addr) ((addr).type == PF_ADDR_DYNIFTL && \ 397 (!((addr).iflags & PFI_AFLAG_NOALIAS) || \ 398 !isdigit((unsigned char)(addr).v.ifname[strlen((addr).v.ifname)-1]))) 399 400 %} 401 402 %token PASS BLOCK SCRUB RETURN IN OS OUT LOG LOGALL QUICK ON FROM TO FLAGS 403 %token RETURNRST RETURNICMP RETURNICMP6 PROTO INET INET6 ALL ANY ICMPTYPE 404 %token ICMP6TYPE CODE KEEP MODULATE STATE PORT RDR NAT BINAT ARROW NODF 405 %token MINTTL ERROR ALLOWOPTS FASTROUTE FILENAME ROUTETO DUPTO REPLYTO NO LABEL 406 %token NOROUTE FRAGMENT USER GROUP MAXMSS MAXIMUM TTL TOS DROP TABLE 407 %token REASSEMBLE FRAGDROP FRAGCROP ANCHOR NATANCHOR RDRANCHOR BINATANCHOR 408 %token SET OPTIMIZATION TIMEOUT LIMIT LOGINTERFACE BLOCKPOLICY RANDOMID 409 %token REQUIREORDER SYNPROXY FINGERPRINTS NOSYNC DEBUG SKIP HOSTID 410 %token ANTISPOOF FOR 411 %token BITMASK RANDOM SOURCEHASH ROUNDROBIN STATICPORT PROBABILITY 412 %token ALTQ CBQ PRIQ HFSC BANDWIDTH TBRSIZE LINKSHARE REALTIME UPPERLIMIT 413 %token QUEUE PRIORITY QLIMIT 414 %token LOAD 415 %token STICKYADDRESS MAXSRCSTATES MAXSRCNODES SOURCETRACK GLOBAL RULE 416 %token MAXSRCCONN MAXSRCCONNRATE OVERLOAD FLUSH 417 %token TAGGED TAG IFBOUND GRBOUND FLOATING STATEPOLICY ROUTE 418 %token <v.string> STRING 419 %token <v.i> PORTBINARY 420 %type <v.interface> interface if_list if_item_not if_item 421 %type <v.number> number icmptype icmp6type uid gid 422 %type <v.number> tos not yesno natpass 423 %type <v.i> no dir log af fragcache sourcetrack flush 424 %type <v.i> unaryop statelock 425 %type <v.b> action nataction scrubaction 426 %type <v.b> flags flag blockspec 427 %type <v.range> port rport 428 %type <v.hashkey> hashkey 429 %type <v.proto> proto proto_list proto_item 430 %type <v.icmp> icmpspec 431 %type <v.icmp> icmp_list icmp_item 432 %type <v.icmp> icmp6_list icmp6_item 433 %type <v.fromto> fromto 434 %type <v.peer> ipportspec from to 435 %type <v.host> ipspec xhost host dynaddr host_list 436 %type <v.host> redir_host_list redirspec 437 %type <v.host> route_host route_host_list routespec 438 %type <v.os> os xos os_list 439 %type <v.port> portspec port_list port_item 440 %type <v.uid> uids uid_list uid_item 441 %type <v.gid> gids gid_list gid_item 442 %type <v.route> route 443 %type <v.redirection> redirection redirpool 444 %type <v.string> label string tag 445 %type <v.keep_state> keep 446 %type <v.state_opt> state_opt_spec state_opt_list state_opt_item 447 %type <v.state_opt> opt_statelock 448 %type <v.logquick> logquick 449 %type <v.interface> antispoof_ifspc antispoof_iflst antispoof_if 450 %type <v.qassign> qname 451 %type <v.queue> qassign qassign_list qassign_item 452 %type <v.queue_options> scheduler 453 %type <v.number> cbqflags_list cbqflags_item 454 %type <v.number> priqflags_list priqflags_item 455 %type <v.hfsc_opts> hfscopts_list hfscopts_item hfsc_opts 456 %type <v.queue_bwspec> bandwidth 457 %type <v.filter_opts> filter_opts filter_opt filter_opts_l 458 %type <v.antispoof_opts> antispoof_opts antispoof_opt antispoof_opts_l 459 %type <v.queue_opts> queue_opts queue_opt queue_opts_l 460 %type <v.scrub_opts> scrub_opts scrub_opt scrub_opts_l 461 %type <v.table_opts> table_opts table_opt table_opts_l 462 %type <v.pool_opts> pool_opts pool_opt pool_opts_l 463 %type <v.tagged> tagged 464 %% 465 466 ruleset : /* empty */ 467 | ruleset '\n' 468 | ruleset option '\n' 469 | ruleset scrubrule '\n' 470 | ruleset natrule '\n' 471 | ruleset binatrule '\n' 472 | ruleset pfrule '\n' 473 | ruleset anchorrule '\n' 474 | ruleset loadrule '\n' 475 | ruleset altqif '\n' 476 | ruleset queuespec '\n' 477 | ruleset varset '\n' 478 | ruleset antispoof '\n' 479 | ruleset tabledef '\n' 480 | ruleset error '\n' { errors++; } 481 ; 482 483 option : SET OPTIMIZATION STRING { 484 if (check_rulestate(PFCTL_STATE_OPTION)) { 485 free($3); 486 YYERROR; 487 } 488 if (pfctl_set_optimization(pf, $3) != 0) { 489 yyerror("unknown optimization %s", $3); 490 free($3); 491 YYERROR; 492 } 493 free ($3); 494 } 495 | SET TIMEOUT timeout_spec 496 | SET TIMEOUT '{' timeout_list '}' 497 | SET LIMIT limit_spec 498 | SET LIMIT '{' limit_list '}' 499 | SET LOGINTERFACE STRING { 500 if (check_rulestate(PFCTL_STATE_OPTION)) { 501 free($3); 502 YYERROR; 503 } 504 if (pfctl_set_logif(pf, $3) != 0) { 505 yyerror("error setting loginterface %s", $3); 506 free($3); 507 YYERROR; 508 } 509 free($3); 510 } 511 | SET HOSTID number { 512 if ($3 == 0) { 513 yyerror("hostid must be non-zero"); 514 YYERROR; 515 } 516 if (pfctl_set_hostid(pf, $3) != 0) { 517 yyerror("error setting hostid %08x", $3); 518 YYERROR; 519 } 520 } 521 | SET BLOCKPOLICY DROP { 522 if (pf->opts & PF_OPT_VERBOSE) 523 printf("set block-policy drop\n"); 524 if (check_rulestate(PFCTL_STATE_OPTION)) 525 YYERROR; 526 blockpolicy = PFRULE_DROP; 527 } 528 | SET BLOCKPOLICY RETURN { 529 if (pf->opts & PF_OPT_VERBOSE) 530 printf("set block-policy return\n"); 531 if (check_rulestate(PFCTL_STATE_OPTION)) 532 YYERROR; 533 blockpolicy = PFRULE_RETURN; 534 } 535 | SET REQUIREORDER yesno { 536 if (pf->opts & PF_OPT_VERBOSE) 537 printf("set require-order %s\n", 538 $3 == 1 ? "yes" : "no"); 539 require_order = $3; 540 } 541 | SET FINGERPRINTS STRING { 542 if (pf->opts & PF_OPT_VERBOSE) 543 printf("set fingerprints %s\n", $3); 544 if (check_rulestate(PFCTL_STATE_OPTION)) { 545 free($3); 546 YYERROR; 547 } 548 if (!pf->anchor[0]) { 549 if (pfctl_file_fingerprints(pf->dev, 550 pf->opts, $3)) { 551 yyerror("error loading " 552 "fingerprints %s", $3); 553 free($3); 554 YYERROR; 555 } 556 } 557 free($3); 558 } 559 | SET STATEPOLICY statelock { 560 if (pf->opts & PF_OPT_VERBOSE) 561 switch ($3) { 562 case 0: 563 printf("set state-policy floating\n"); 564 break; 565 case PFRULE_IFBOUND: 566 printf("set state-policy if-bound\n"); 567 break; 568 case PFRULE_GRBOUND: 569 printf("set state-policy " 570 "group-bound\n"); 571 break; 572 } 573 default_statelock = $3; 574 } 575 | SET DEBUG STRING { 576 if (check_rulestate(PFCTL_STATE_OPTION)) { 577 free($3); 578 YYERROR; 579 } 580 if (pfctl_set_debug(pf, $3) != 0) { 581 yyerror("error setting debuglevel %s", $3); 582 free($3); 583 YYERROR; 584 } 585 free($3); 586 } 587 | SET SKIP interface { 588 if (expand_skip_interface($3) != 0) { 589 yyerror("error setting skip interface(s)"); 590 YYERROR; 591 } 592 } 593 ; 594 595 string : string STRING { 596 if (asprintf(&$$, "%s %s", $1, $2) == -1) 597 err(1, "string: asprintf"); 598 free($1); 599 free($2); 600 } 601 | STRING 602 ; 603 604 varset : STRING '=' string { 605 if (pf->opts & PF_OPT_VERBOSE) 606 printf("%s = \"%s\"\n", $1, $3); 607 if (symset($1, $3, 0) == -1) 608 err(1, "cannot store variable %s", $1); 609 free($1); 610 free($3); 611 } 612 ; 613 614 anchorrule : ANCHOR string dir interface af proto fromto filter_opts { 615 struct pf_rule r; 616 617 if (check_rulestate(PFCTL_STATE_FILTER)) { 618 free($2); 619 YYERROR; 620 } 621 622 memset(&r, 0, sizeof(r)); 623 r.direction = $3; 624 r.af = $5; 625 r.prob = $8.prob; 626 627 if ($8.match_tag) 628 if (strlcpy(r.match_tagname, $8.match_tag, 629 PF_TAG_NAME_SIZE) >= PF_TAG_NAME_SIZE) { 630 yyerror("tag too long, max %u chars", 631 PF_TAG_NAME_SIZE - 1); 632 YYERROR; 633 } 634 r.match_tag_not = $8.match_tag_not; 635 636 decide_address_family($7.src.host, &r.af); 637 decide_address_family($7.dst.host, &r.af); 638 639 expand_rule(&r, $4, NULL, $6, $7.src_os, 640 $7.src.host, $7.src.port, $7.dst.host, $7.dst.port, 641 0, 0, 0, $2); 642 free($2); 643 } 644 | NATANCHOR string interface af proto fromto { 645 struct pf_rule r; 646 647 if (check_rulestate(PFCTL_STATE_NAT)) { 648 free($2); 649 YYERROR; 650 } 651 652 memset(&r, 0, sizeof(r)); 653 r.action = PF_NAT; 654 r.af = $4; 655 656 decide_address_family($6.src.host, &r.af); 657 decide_address_family($6.dst.host, &r.af); 658 659 expand_rule(&r, $3, NULL, $5, $6.src_os, 660 $6.src.host, $6.src.port, $6.dst.host, $6.dst.port, 661 0, 0, 0, $2); 662 free($2); 663 } 664 | RDRANCHOR string interface af proto fromto { 665 struct pf_rule r; 666 667 if (check_rulestate(PFCTL_STATE_NAT)) { 668 free($2); 669 YYERROR; 670 } 671 672 memset(&r, 0, sizeof(r)); 673 r.action = PF_RDR; 674 r.af = $4; 675 676 decide_address_family($6.src.host, &r.af); 677 decide_address_family($6.dst.host, &r.af); 678 679 if ($6.src.port != NULL) { 680 yyerror("source port parameter not supported" 681 " in rdr-anchor"); 682 YYERROR; 683 } 684 if ($6.dst.port != NULL) { 685 if ($6.dst.port->next != NULL) { 686 yyerror("destination port list " 687 "expansion not supported in " 688 "rdr-anchor"); 689 YYERROR; 690 } else if ($6.dst.port->op != PF_OP_EQ) { 691 yyerror("destination port operators" 692 " not supported in rdr-anchor"); 693 YYERROR; 694 } 695 r.dst.port[0] = $6.dst.port->port[0]; 696 r.dst.port[1] = $6.dst.port->port[1]; 697 r.dst.port_op = $6.dst.port->op; 698 } 699 700 expand_rule(&r, $3, NULL, $5, $6.src_os, 701 $6.src.host, $6.src.port, $6.dst.host, $6.dst.port, 702 0, 0, 0, $2); 703 free($2); 704 } 705 | BINATANCHOR string interface af proto fromto { 706 struct pf_rule r; 707 708 if (check_rulestate(PFCTL_STATE_NAT)) { 709 free($2); 710 YYERROR; 711 } 712 713 memset(&r, 0, sizeof(r)); 714 r.action = PF_BINAT; 715 r.af = $4; 716 if ($5 != NULL) { 717 if ($5->next != NULL) { 718 yyerror("proto list expansion" 719 " not supported in binat-anchor"); 720 YYERROR; 721 } 722 r.proto = $5->proto; 723 free($5); 724 } 725 726 if ($6.src.host != NULL || $6.src.port != NULL || 727 $6.dst.host != NULL || $6.dst.port != NULL) { 728 yyerror("fromto parameter not supported" 729 " in binat-anchor"); 730 YYERROR; 731 } 732 733 decide_address_family($6.src.host, &r.af); 734 decide_address_family($6.dst.host, &r.af); 735 736 pfctl_add_rule(pf, &r, $2); 737 free($2); 738 } 739 ; 740 741 loadrule : LOAD ANCHOR string FROM string { 742 struct loadanchors *loadanchor; 743 744 if (strlen($3) >= MAXPATHLEN) { 745 yyerror("anchorname %s too long, max %u\n", 746 $3, MAXPATHLEN - 1); 747 free($3); 748 YYERROR; 749 } 750 loadanchor = calloc(1, sizeof(struct loadanchors)); 751 if (loadanchor == NULL) 752 err(1, "loadrule: calloc"); 753 if ((loadanchor->anchorname = strdup($3)) == NULL) 754 err(1, "loadrule: strdup"); 755 if ((loadanchor->filename = strdup($5)) == NULL) 756 err(1, "loadrule: strdup"); 757 758 TAILQ_INSERT_TAIL(&loadanchorshead, loadanchor, 759 entries); 760 761 free($3); 762 free($5); 763 }; 764 765 scrubaction : no SCRUB { 766 $$.b2 = $$.w = 0; 767 if ($1) 768 $$.b1 = PF_NOSCRUB; 769 else 770 $$.b1 = PF_SCRUB; 771 } 772 ; 773 774 scrubrule : scrubaction dir logquick interface af proto fromto scrub_opts 775 { 776 struct pf_rule r; 777 778 if (check_rulestate(PFCTL_STATE_SCRUB)) 779 YYERROR; 780 781 memset(&r, 0, sizeof(r)); 782 783 r.action = $1.b1; 784 r.direction = $2; 785 786 r.log = $3.log; 787 if ($3.quick) { 788 yyerror("scrub rules do not support 'quick'"); 789 YYERROR; 790 } 791 792 r.af = $5; 793 if ($8.nodf) 794 r.rule_flag |= PFRULE_NODF; 795 if ($8.randomid) 796 r.rule_flag |= PFRULE_RANDOMID; 797 if ($8.reassemble_tcp) { 798 if (r.direction != PF_INOUT) { 799 yyerror("reassemble tcp rules can not " 800 "specify direction"); 801 YYERROR; 802 } 803 r.rule_flag |= PFRULE_REASSEMBLE_TCP; 804 } 805 if ($8.minttl) 806 r.min_ttl = $8.minttl; 807 if ($8.maxmss) 808 r.max_mss = $8.maxmss; 809 if ($8.fragcache) 810 r.rule_flag |= $8.fragcache; 811 812 expand_rule(&r, $4, NULL, $6, $7.src_os, 813 $7.src.host, $7.src.port, $7.dst.host, $7.dst.port, 814 NULL, NULL, NULL, ""); 815 } 816 ; 817 818 scrub_opts : { 819 bzero(&scrub_opts, sizeof scrub_opts); 820 } 821 scrub_opts_l 822 { $$ = scrub_opts; } 823 | /* empty */ { 824 bzero(&scrub_opts, sizeof scrub_opts); 825 $$ = scrub_opts; 826 } 827 ; 828 829 scrub_opts_l : scrub_opts_l scrub_opt 830 | scrub_opt 831 ; 832 833 scrub_opt : NODF { 834 if (scrub_opts.nodf) { 835 yyerror("no-df cannot be respecified"); 836 YYERROR; 837 } 838 scrub_opts.nodf = 1; 839 } 840 | MINTTL number { 841 if (scrub_opts.marker & SOM_MINTTL) { 842 yyerror("min-ttl cannot be respecified"); 843 YYERROR; 844 } 845 if ($2 > 255) { 846 yyerror("illegal min-ttl value %d", $2); 847 YYERROR; 848 } 849 scrub_opts.marker |= SOM_MINTTL; 850 scrub_opts.minttl = $2; 851 } 852 | MAXMSS number { 853 if (scrub_opts.marker & SOM_MAXMSS) { 854 yyerror("max-mss cannot be respecified"); 855 YYERROR; 856 } 857 if ($2 > 65535) { 858 yyerror("illegal max-mss value %d", $2); 859 YYERROR; 860 } 861 scrub_opts.marker |= SOM_MAXMSS; 862 scrub_opts.maxmss = $2; 863 } 864 | fragcache { 865 if (scrub_opts.marker & SOM_FRAGCACHE) { 866 yyerror("fragcache cannot be respecified"); 867 YYERROR; 868 } 869 scrub_opts.marker |= SOM_FRAGCACHE; 870 scrub_opts.fragcache = $1; 871 } 872 | REASSEMBLE STRING { 873 if (strcasecmp($2, "tcp") != 0) { 874 yyerror("scrub reassemble supports only tcp, " 875 "not '%s'", $2); 876 free($2); 877 YYERROR; 878 } 879 free($2); 880 if (scrub_opts.reassemble_tcp) { 881 yyerror("reassemble tcp cannot be respecified"); 882 YYERROR; 883 } 884 scrub_opts.reassemble_tcp = 1; 885 } 886 | RANDOMID { 887 if (scrub_opts.randomid) { 888 yyerror("random-id cannot be respecified"); 889 YYERROR; 890 } 891 scrub_opts.randomid = 1; 892 } 893 ; 894 895 fragcache : FRAGMENT REASSEMBLE { $$ = 0; /* default */ } 896 | FRAGMENT FRAGCROP { $$ = PFRULE_FRAGCROP; } 897 | FRAGMENT FRAGDROP { $$ = PFRULE_FRAGDROP; } 898 ; 899 900 antispoof : ANTISPOOF logquick antispoof_ifspc af antispoof_opts { 901 struct pf_rule r; 902 struct node_host *h = NULL, *hh; 903 struct node_if *i, *j; 904 905 if (check_rulestate(PFCTL_STATE_FILTER)) 906 YYERROR; 907 908 for (i = $3; i; i = i->next) { 909 bzero(&r, sizeof(r)); 910 911 r.action = PF_DROP; 912 r.direction = PF_IN; 913 r.log = $2.log; 914 r.quick = $2.quick; 915 r.af = $4; 916 if (rule_label(&r, $5.label)) 917 YYERROR; 918 j = calloc(1, sizeof(struct node_if)); 919 if (j == NULL) 920 err(1, "antispoof: calloc"); 921 if (strlcpy(j->ifname, i->ifname, 922 sizeof(j->ifname)) >= sizeof(j->ifname)) { 923 free(j); 924 yyerror("interface name too long"); 925 YYERROR; 926 } 927 j->not = 1; 928 if (i->dynamic) { 929 h = calloc(1, sizeof(*h)); 930 if (h == NULL) 931 err(1, "address: calloc"); 932 h->addr.type = PF_ADDR_DYNIFTL; 933 set_ipmask(h, 128); 934 if (strlcpy(h->addr.v.ifname, i->ifname, 935 sizeof(h->addr.v.ifname)) >= 936 sizeof(h->addr.v.ifname)) { 937 free(h); 938 yyerror( 939 "interface name too long"); 940 YYERROR; 941 } 942 hh = malloc(sizeof(*hh)); 943 if (hh == NULL) 944 err(1, "address: malloc"); 945 bcopy(h, hh, sizeof(*hh)); 946 h->addr.iflags = PFI_AFLAG_NETWORK; 947 } else { 948 h = ifa_lookup(j->ifname, 949 PFI_AFLAG_NETWORK); 950 hh = NULL; 951 } 952 953 if (h != NULL) 954 expand_rule(&r, j, NULL, NULL, NULL, h, 955 NULL, NULL, NULL, NULL, NULL, 956 NULL, ""); 957 958 if ((i->ifa_flags & IFF_LOOPBACK) == 0) { 959 bzero(&r, sizeof(r)); 960 961 r.action = PF_DROP; 962 r.direction = PF_IN; 963 r.log = $2.log; 964 r.quick = $2.quick; 965 r.af = $4; 966 if (rule_label(&r, $5.label)) 967 YYERROR; 968 if (hh != NULL) 969 h = hh; 970 else 971 h = ifa_lookup(i->ifname, 0); 972 if (h != NULL) 973 expand_rule(&r, NULL, NULL, 974 NULL, NULL, h, NULL, NULL, 975 NULL, NULL, NULL, NULL, ""); 976 } else 977 free(hh); 978 } 979 free($5.label); 980 } 981 ; 982 983 antispoof_ifspc : FOR antispoof_if { $$ = $2; } 984 | FOR '{' antispoof_iflst '}' { $$ = $3; } 985 ; 986 987 antispoof_iflst : antispoof_if { $$ = $1; } 988 | antispoof_iflst comma antispoof_if { 989 $1->tail->next = $3; 990 $1->tail = $3; 991 $$ = $1; 992 } 993 ; 994 995 antispoof_if : if_item { $$ = $1; } 996 | '(' if_item ')' { 997 $2->dynamic = 1; 998 $$ = $2; 999 } 1000 ; 1001 1002 antispoof_opts : { bzero(&antispoof_opts, sizeof antispoof_opts); } 1003 antispoof_opts_l 1004 { $$ = antispoof_opts; } 1005 | /* empty */ { 1006 bzero(&antispoof_opts, sizeof antispoof_opts); 1007 $$ = antispoof_opts; 1008 } 1009 ; 1010 1011 antispoof_opts_l : antispoof_opts_l antispoof_opt 1012 | antispoof_opt 1013 ; 1014 1015 antispoof_opt : label { 1016 if (antispoof_opts.label) { 1017 yyerror("label cannot be redefined"); 1018 YYERROR; 1019 } 1020 antispoof_opts.label = $1; 1021 } 1022 ; 1023 1024 not : '!' { $$ = 1; } 1025 | /* empty */ { $$ = 0; } 1026 ; 1027 1028 tabledef : TABLE '<' STRING '>' table_opts { 1029 struct node_host *h, *nh; 1030 struct node_tinit *ti, *nti; 1031 1032 if (strlen($3) >= PF_TABLE_NAME_SIZE) { 1033 yyerror("table name too long, max %d chars", 1034 PF_TABLE_NAME_SIZE - 1); 1035 free($3); 1036 YYERROR; 1037 } 1038 if (pf->loadopt & PFCTL_FLAG_TABLE) 1039 if (process_tabledef($3, &$5)) { 1040 free($3); 1041 YYERROR; 1042 } 1043 free($3); 1044 for (ti = SIMPLEQ_FIRST(&$5.init_nodes); 1045 ti != NULL; ti = nti) { 1046 if (ti->file) 1047 free(ti->file); 1048 for (h = ti->host; h != NULL; h = nh) { 1049 nh = h->next; 1050 free(h); 1051 } 1052 nti = SIMPLEQ_NEXT(ti, entries); 1053 free(ti); 1054 } 1055 } 1056 ; 1057 1058 table_opts : { 1059 bzero(&table_opts, sizeof table_opts); 1060 SIMPLEQ_INIT(&table_opts.init_nodes); 1061 } 1062 table_opts_l 1063 { $$ = table_opts; } 1064 | /* empty */ 1065 { 1066 bzero(&table_opts, sizeof table_opts); 1067 SIMPLEQ_INIT(&table_opts.init_nodes); 1068 $$ = table_opts; 1069 } 1070 ; 1071 1072 table_opts_l : table_opts_l table_opt 1073 | table_opt 1074 ; 1075 1076 table_opt : STRING { 1077 if (!strcmp($1, "const")) 1078 table_opts.flags |= PFR_TFLAG_CONST; 1079 else if (!strcmp($1, "persist")) 1080 table_opts.flags |= PFR_TFLAG_PERSIST; 1081 else { 1082 yyerror("invalid table option '%s'", $1); 1083 free($1); 1084 YYERROR; 1085 } 1086 free($1); 1087 } 1088 | '{' '}' { table_opts.init_addr = 1; } 1089 | '{' host_list '}' { 1090 struct node_host *n; 1091 struct node_tinit *ti; 1092 1093 for (n = $2; n != NULL; n = n->next) { 1094 switch (n->addr.type) { 1095 case PF_ADDR_ADDRMASK: 1096 continue; /* ok */ 1097 case PF_ADDR_DYNIFTL: 1098 yyerror("dynamic addresses are not " 1099 "permitted inside tables"); 1100 break; 1101 case PF_ADDR_TABLE: 1102 yyerror("tables cannot contain tables"); 1103 break; 1104 case PF_ADDR_NOROUTE: 1105 yyerror("\"no-route\" is not permitted " 1106 "inside tables"); 1107 break; 1108 default: 1109 yyerror("unknown address type %d", 1110 n->addr.type); 1111 } 1112 YYERROR; 1113 } 1114 if (!(ti = calloc(1, sizeof(*ti)))) 1115 err(1, "table_opt: calloc"); 1116 ti->host = $2; 1117 SIMPLEQ_INSERT_TAIL(&table_opts.init_nodes, ti, 1118 entries); 1119 table_opts.init_addr = 1; 1120 } 1121 | FILENAME STRING { 1122 struct node_tinit *ti; 1123 1124 if (!(ti = calloc(1, sizeof(*ti)))) 1125 err(1, "table_opt: calloc"); 1126 ti->file = $2; 1127 SIMPLEQ_INSERT_TAIL(&table_opts.init_nodes, ti, 1128 entries); 1129 table_opts.init_addr = 1; 1130 } 1131 ; 1132 1133 altqif : ALTQ interface queue_opts QUEUE qassign { 1134 struct pf_altq a; 1135 1136 if (check_rulestate(PFCTL_STATE_QUEUE)) 1137 YYERROR; 1138 1139 memset(&a, 0, sizeof(a)); 1140 if ($3.scheduler.qtype == ALTQT_NONE) { 1141 yyerror("no scheduler specified!"); 1142 YYERROR; 1143 } 1144 a.scheduler = $3.scheduler.qtype; 1145 a.qlimit = $3.qlimit; 1146 a.tbrsize = $3.tbrsize; 1147 if ($5 == NULL) { 1148 yyerror("no child queues specified"); 1149 YYERROR; 1150 } 1151 if (expand_altq(&a, $2, $5, $3.queue_bwspec, 1152 &$3.scheduler)) 1153 YYERROR; 1154 } 1155 ; 1156 1157 queuespec : QUEUE STRING interface queue_opts qassign { 1158 struct pf_altq a; 1159 1160 if (check_rulestate(PFCTL_STATE_QUEUE)) { 1161 free($2); 1162 YYERROR; 1163 } 1164 1165 memset(&a, 0, sizeof(a)); 1166 1167 if (strlcpy(a.qname, $2, sizeof(a.qname)) >= 1168 sizeof(a.qname)) { 1169 yyerror("queue name too long (max " 1170 "%d chars)", PF_QNAME_SIZE-1); 1171 free($2); 1172 YYERROR; 1173 } 1174 free($2); 1175 if ($4.tbrsize) { 1176 yyerror("cannot specify tbrsize for queue"); 1177 YYERROR; 1178 } 1179 if ($4.priority > 255) { 1180 yyerror("priority out of range: max 255"); 1181 YYERROR; 1182 } 1183 a.priority = $4.priority; 1184 a.qlimit = $4.qlimit; 1185 a.scheduler = $4.scheduler.qtype; 1186 if (expand_queue(&a, $3, $5, $4.queue_bwspec, 1187 &$4.scheduler)) { 1188 yyerror("errors in queue definition"); 1189 YYERROR; 1190 } 1191 } 1192 ; 1193 1194 queue_opts : { 1195 bzero(&queue_opts, sizeof queue_opts); 1196 queue_opts.priority = DEFAULT_PRIORITY; 1197 queue_opts.qlimit = DEFAULT_QLIMIT; 1198 queue_opts.scheduler.qtype = ALTQT_NONE; 1199 queue_opts.queue_bwspec.bw_percent = 100; 1200 } 1201 queue_opts_l 1202 { $$ = queue_opts; } 1203 | /* empty */ { 1204 bzero(&queue_opts, sizeof queue_opts); 1205 queue_opts.priority = DEFAULT_PRIORITY; 1206 queue_opts.qlimit = DEFAULT_QLIMIT; 1207 queue_opts.scheduler.qtype = ALTQT_NONE; 1208 queue_opts.queue_bwspec.bw_percent = 100; 1209 $$ = queue_opts; 1210 } 1211 ; 1212 1213 queue_opts_l : queue_opts_l queue_opt 1214 | queue_opt 1215 ; 1216 1217 queue_opt : BANDWIDTH bandwidth { 1218 if (queue_opts.marker & QOM_BWSPEC) { 1219 yyerror("bandwidth cannot be respecified"); 1220 YYERROR; 1221 } 1222 queue_opts.marker |= QOM_BWSPEC; 1223 queue_opts.queue_bwspec = $2; 1224 } 1225 | PRIORITY number { 1226 if (queue_opts.marker & QOM_PRIORITY) { 1227 yyerror("priority cannot be respecified"); 1228 YYERROR; 1229 } 1230 if ($2 > 255) { 1231 yyerror("priority out of range: max 255"); 1232 YYERROR; 1233 } 1234 queue_opts.marker |= QOM_PRIORITY; 1235 queue_opts.priority = $2; 1236 } 1237 | QLIMIT number { 1238 if (queue_opts.marker & QOM_QLIMIT) { 1239 yyerror("qlimit cannot be respecified"); 1240 YYERROR; 1241 } 1242 if ($2 > 65535) { 1243 yyerror("qlimit out of range: max 65535"); 1244 YYERROR; 1245 } 1246 queue_opts.marker |= QOM_QLIMIT; 1247 queue_opts.qlimit = $2; 1248 } 1249 | scheduler { 1250 if (queue_opts.marker & QOM_SCHEDULER) { 1251 yyerror("scheduler cannot be respecified"); 1252 YYERROR; 1253 } 1254 queue_opts.marker |= QOM_SCHEDULER; 1255 queue_opts.scheduler = $1; 1256 } 1257 | TBRSIZE number { 1258 if (queue_opts.marker & QOM_TBRSIZE) { 1259 yyerror("tbrsize cannot be respecified"); 1260 YYERROR; 1261 } 1262 if ($2 > 65535) { 1263 yyerror("tbrsize too big: max 65535"); 1264 YYERROR; 1265 } 1266 queue_opts.marker |= QOM_TBRSIZE; 1267 queue_opts.tbrsize = $2; 1268 } 1269 ; 1270 1271 bandwidth : STRING { 1272 double bps; 1273 char *cp; 1274 1275 $$.bw_percent = 0; 1276 1277 bps = strtod($1, &cp); 1278 if (cp != NULL) { 1279 if (!strcmp(cp, "b")) 1280 ; /* nothing */ 1281 else if (!strcmp(cp, "Kb")) 1282 bps *= 1000; 1283 else if (!strcmp(cp, "Mb")) 1284 bps *= 1000 * 1000; 1285 else if (!strcmp(cp, "Gb")) 1286 bps *= 1000 * 1000 * 1000; 1287 else if (!strcmp(cp, "%")) { 1288 if (bps < 0 || bps > 100) { 1289 yyerror("bandwidth spec " 1290 "out of range"); 1291 free($1); 1292 YYERROR; 1293 } 1294 $$.bw_percent = bps; 1295 bps = 0; 1296 } else { 1297 yyerror("unknown unit %s", cp); 1298 free($1); 1299 YYERROR; 1300 } 1301 } 1302 free($1); 1303 $$.bw_absolute = (u_int32_t)bps; 1304 } 1305 ; 1306 1307 scheduler : CBQ { 1308 $$.qtype = ALTQT_CBQ; 1309 $$.data.cbq_opts.flags = 0; 1310 } 1311 | CBQ '(' cbqflags_list ')' { 1312 $$.qtype = ALTQT_CBQ; 1313 $$.data.cbq_opts.flags = $3; 1314 } 1315 | PRIQ { 1316 $$.qtype = ALTQT_PRIQ; 1317 $$.data.priq_opts.flags = 0; 1318 } 1319 | PRIQ '(' priqflags_list ')' { 1320 $$.qtype = ALTQT_PRIQ; 1321 $$.data.priq_opts.flags = $3; 1322 } 1323 | HFSC { 1324 $$.qtype = ALTQT_HFSC; 1325 bzero(&$$.data.hfsc_opts, 1326 sizeof(struct node_hfsc_opts)); 1327 } 1328 | HFSC '(' hfsc_opts ')' { 1329 $$.qtype = ALTQT_HFSC; 1330 $$.data.hfsc_opts = $3; 1331 } 1332 ; 1333 1334 cbqflags_list : cbqflags_item { $$ |= $1; } 1335 | cbqflags_list comma cbqflags_item { $$ |= $3; } 1336 ; 1337 1338 cbqflags_item : STRING { 1339 if (!strcmp($1, "default")) 1340 $$ = CBQCLF_DEFCLASS; 1341 #ifdef CBQCLF_BORROW 1342 else if (!strcmp($1, "borrow")) 1343 $$ = CBQCLF_BORROW; 1344 #endif 1345 else if (!strcmp($1, "red")) 1346 $$ = CBQCLF_RED; 1347 else if (!strcmp($1, "ecn")) 1348 $$ = CBQCLF_RED|CBQCLF_ECN; 1349 else if (!strcmp($1, "rio")) 1350 $$ = CBQCLF_RIO; 1351 else { 1352 yyerror("unknown cbq flag \"%s\"", $1); 1353 free($1); 1354 YYERROR; 1355 } 1356 free($1); 1357 } 1358 ; 1359 1360 priqflags_list : priqflags_item { $$ |= $1; } 1361 | priqflags_list comma priqflags_item { $$ |= $3; } 1362 ; 1363 1364 priqflags_item : STRING { 1365 if (!strcmp($1, "default")) 1366 $$ = PRCF_DEFAULTCLASS; 1367 else if (!strcmp($1, "red")) 1368 $$ = PRCF_RED; 1369 else if (!strcmp($1, "ecn")) 1370 $$ = PRCF_RED|PRCF_ECN; 1371 else if (!strcmp($1, "rio")) 1372 $$ = PRCF_RIO; 1373 else { 1374 yyerror("unknown priq flag \"%s\"", $1); 1375 free($1); 1376 YYERROR; 1377 } 1378 free($1); 1379 } 1380 ; 1381 1382 hfsc_opts : { 1383 bzero(&hfsc_opts, 1384 sizeof(struct node_hfsc_opts)); 1385 } 1386 hfscopts_list { 1387 $$ = hfsc_opts; 1388 } 1389 ; 1390 1391 hfscopts_list : hfscopts_item 1392 | hfscopts_list comma hfscopts_item 1393 ; 1394 1395 hfscopts_item : LINKSHARE bandwidth { 1396 if (hfsc_opts.linkshare.used) { 1397 yyerror("linkshare already specified"); 1398 YYERROR; 1399 } 1400 hfsc_opts.linkshare.m2 = $2; 1401 hfsc_opts.linkshare.used = 1; 1402 } 1403 | LINKSHARE '(' bandwidth comma number comma bandwidth ')' 1404 { 1405 if (hfsc_opts.linkshare.used) { 1406 yyerror("linkshare already specified"); 1407 YYERROR; 1408 } 1409 hfsc_opts.linkshare.m1 = $3; 1410 hfsc_opts.linkshare.d = $5; 1411 hfsc_opts.linkshare.m2 = $7; 1412 hfsc_opts.linkshare.used = 1; 1413 } 1414 | REALTIME bandwidth { 1415 if (hfsc_opts.realtime.used) { 1416 yyerror("realtime already specified"); 1417 YYERROR; 1418 } 1419 hfsc_opts.realtime.m2 = $2; 1420 hfsc_opts.realtime.used = 1; 1421 } 1422 | REALTIME '(' bandwidth comma number comma bandwidth ')' 1423 { 1424 if (hfsc_opts.realtime.used) { 1425 yyerror("realtime already specified"); 1426 YYERROR; 1427 } 1428 hfsc_opts.realtime.m1 = $3; 1429 hfsc_opts.realtime.d = $5; 1430 hfsc_opts.realtime.m2 = $7; 1431 hfsc_opts.realtime.used = 1; 1432 } 1433 | UPPERLIMIT bandwidth { 1434 if (hfsc_opts.upperlimit.used) { 1435 yyerror("upperlimit already specified"); 1436 YYERROR; 1437 } 1438 hfsc_opts.upperlimit.m2 = $2; 1439 hfsc_opts.upperlimit.used = 1; 1440 } 1441 | UPPERLIMIT '(' bandwidth comma number comma bandwidth ')' 1442 { 1443 if (hfsc_opts.upperlimit.used) { 1444 yyerror("upperlimit already specified"); 1445 YYERROR; 1446 } 1447 hfsc_opts.upperlimit.m1 = $3; 1448 hfsc_opts.upperlimit.d = $5; 1449 hfsc_opts.upperlimit.m2 = $7; 1450 hfsc_opts.upperlimit.used = 1; 1451 } 1452 | STRING { 1453 if (!strcmp($1, "default")) 1454 hfsc_opts.flags |= HFCF_DEFAULTCLASS; 1455 else if (!strcmp($1, "red")) 1456 hfsc_opts.flags |= HFCF_RED; 1457 else if (!strcmp($1, "ecn")) 1458 hfsc_opts.flags |= HFCF_RED|HFCF_ECN; 1459 else if (!strcmp($1, "rio")) 1460 hfsc_opts.flags |= HFCF_RIO; 1461 else { 1462 yyerror("unknown hfsc flag \"%s\"", $1); 1463 free($1); 1464 YYERROR; 1465 } 1466 free($1); 1467 } 1468 ; 1469 1470 qassign : /* empty */ { $$ = NULL; } 1471 | qassign_item { $$ = $1; } 1472 | '{' qassign_list '}' { $$ = $2; } 1473 ; 1474 1475 qassign_list : qassign_item { $$ = $1; } 1476 | qassign_list comma qassign_item { 1477 $1->tail->next = $3; 1478 $1->tail = $3; 1479 $$ = $1; 1480 } 1481 ; 1482 1483 qassign_item : STRING { 1484 $$ = calloc(1, sizeof(struct node_queue)); 1485 if ($$ == NULL) 1486 err(1, "qassign_item: calloc"); 1487 if (strlcpy($$->queue, $1, sizeof($$->queue)) >= 1488 sizeof($$->queue)) { 1489 yyerror("queue name '%s' too long (max " 1490 "%d chars)", $1, sizeof($$->queue)-1); 1491 free($1); 1492 free($$); 1493 YYERROR; 1494 } 1495 free($1); 1496 $$->next = NULL; 1497 $$->tail = $$; 1498 } 1499 ; 1500 1501 pfrule : action dir logquick interface route af proto fromto 1502 filter_opts 1503 { 1504 struct pf_rule r; 1505 struct node_state_opt *o; 1506 struct node_proto *proto; 1507 int srctrack = 0; 1508 int statelock = 0; 1509 1510 if (check_rulestate(PFCTL_STATE_FILTER)) 1511 YYERROR; 1512 1513 memset(&r, 0, sizeof(r)); 1514 1515 r.action = $1.b1; 1516 switch ($1.b2) { 1517 case PFRULE_RETURNRST: 1518 r.rule_flag |= PFRULE_RETURNRST; 1519 r.return_ttl = $1.w; 1520 break; 1521 case PFRULE_RETURNICMP: 1522 r.rule_flag |= PFRULE_RETURNICMP; 1523 r.return_icmp = $1.w; 1524 r.return_icmp6 = $1.w2; 1525 break; 1526 case PFRULE_RETURN: 1527 r.rule_flag |= PFRULE_RETURN; 1528 r.return_icmp = $1.w; 1529 r.return_icmp6 = $1.w2; 1530 break; 1531 } 1532 r.direction = $2; 1533 r.log = $3.log; 1534 r.quick = $3.quick; 1535 r.prob = $9.prob; 1536 1537 r.af = $6; 1538 if ($9.tag) 1539 if (strlcpy(r.tagname, $9.tag, 1540 PF_TAG_NAME_SIZE) >= PF_TAG_NAME_SIZE) { 1541 yyerror("tag too long, max %u chars", 1542 PF_TAG_NAME_SIZE - 1); 1543 YYERROR; 1544 } 1545 if ($9.match_tag) 1546 if (strlcpy(r.match_tagname, $9.match_tag, 1547 PF_TAG_NAME_SIZE) >= PF_TAG_NAME_SIZE) { 1548 yyerror("tag too long, max %u chars", 1549 PF_TAG_NAME_SIZE - 1); 1550 YYERROR; 1551 } 1552 r.match_tag_not = $9.match_tag_not; 1553 r.flags = $9.flags.b1; 1554 r.flagset = $9.flags.b2; 1555 if (rule_label(&r, $9.label)) 1556 YYERROR; 1557 free($9.label); 1558 if ($9.flags.b1 || $9.flags.b2 || $8.src_os) { 1559 for (proto = $7; proto != NULL && 1560 proto->proto != IPPROTO_TCP; 1561 proto = proto->next) 1562 ; /* nothing */ 1563 if (proto == NULL && $7 != NULL) { 1564 if ($9.flags.b1 || $9.flags.b2) 1565 yyerror( 1566 "flags only apply to tcp"); 1567 if ($8.src_os) 1568 yyerror( 1569 "OS fingerprinting only " 1570 "apply to tcp"); 1571 YYERROR; 1572 } 1573 #if 0 1574 if (($9.flags.b1 & parse_flags("S")) == 0 && 1575 $8.src_os) { 1576 yyerror("OS fingerprinting requires " 1577 "the SYN TCP flag (flags S/SA)"); 1578 YYERROR; 1579 } 1580 #endif 1581 } 1582 1583 r.tos = $9.tos; 1584 r.keep_state = $9.keep.action; 1585 o = $9.keep.options; 1586 while (o) { 1587 struct node_state_opt *p = o; 1588 1589 switch (o->type) { 1590 case PF_STATE_OPT_MAX: 1591 if (r.max_states) { 1592 yyerror("state option 'max' " 1593 "multiple definitions"); 1594 YYERROR; 1595 } 1596 r.max_states = o->data.max_states; 1597 break; 1598 case PF_STATE_OPT_NOSYNC: 1599 if (r.rule_flag & PFRULE_NOSYNC) { 1600 yyerror("state option 'sync' " 1601 "multiple definitions"); 1602 YYERROR; 1603 } 1604 r.rule_flag |= PFRULE_NOSYNC; 1605 break; 1606 case PF_STATE_OPT_SRCTRACK: 1607 if (srctrack) { 1608 yyerror("state option " 1609 "'source-track' " 1610 "multiple definitions"); 1611 YYERROR; 1612 } 1613 srctrack = o->data.src_track; 1614 r.rule_flag |= PFRULE_SRCTRACK; 1615 break; 1616 case PF_STATE_OPT_MAX_SRC_STATES: 1617 if (r.max_src_states) { 1618 yyerror("state option " 1619 "'max-src-states' " 1620 "multiple definitions"); 1621 YYERROR; 1622 } 1623 if (o->data.max_src_states == 0) { 1624 yyerror("'max-src-states' must " 1625 "be > 0"); 1626 YYERROR; 1627 } 1628 r.max_src_states = 1629 o->data.max_src_states; 1630 r.rule_flag |= PFRULE_SRCTRACK; 1631 break; 1632 case PF_STATE_OPT_OVERLOAD: 1633 if (r.overload_tblname[0]) { 1634 yyerror("multiple 'overload' " 1635 "table definitions"); 1636 YYERROR; 1637 } 1638 if (strlcpy(r.overload_tblname, 1639 o->data.overload.tblname, 1640 PF_TABLE_NAME_SIZE) >= 1641 PF_TABLE_NAME_SIZE) { 1642 yyerror("state option: " 1643 "strlcpy"); 1644 YYERROR; 1645 } 1646 r.flush = o->data.overload.flush; 1647 break; 1648 case PF_STATE_OPT_MAX_SRC_CONN: 1649 if (r.max_src_conn) { 1650 yyerror("state option " 1651 "'max-src-conn' " 1652 "multiple definitions"); 1653 YYERROR; 1654 } 1655 if (o->data.max_src_conn == 0) { 1656 yyerror("'max-src-conn' " 1657 "must be > 0"); 1658 YYERROR; 1659 } 1660 r.max_src_conn = 1661 o->data.max_src_conn; 1662 r.rule_flag |= PFRULE_SRCTRACK | 1663 PFRULE_RULESRCTRACK; 1664 break; 1665 case PF_STATE_OPT_MAX_SRC_CONN_RATE: 1666 if (r.max_src_conn_rate.limit) { 1667 yyerror("state option " 1668 "'max-src-conn-rate' " 1669 "multiple definitions"); 1670 YYERROR; 1671 } 1672 if (!o->data.max_src_conn_rate.limit || 1673 !o->data.max_src_conn_rate.seconds) { 1674 yyerror("'max-src-conn-rate' " 1675 "values must be > 0"); 1676 YYERROR; 1677 } 1678 if (o->data.max_src_conn_rate.limit > 1679 PF_THRESHOLD_MAX) { 1680 yyerror("'max-src-conn-rate' " 1681 "maximum rate must be < %u", 1682 PF_THRESHOLD_MAX); 1683 YYERROR; 1684 } 1685 r.max_src_conn_rate.limit = 1686 o->data.max_src_conn_rate.limit; 1687 r.max_src_conn_rate.seconds = 1688 o->data.max_src_conn_rate.seconds; 1689 r.rule_flag |= PFRULE_SRCTRACK | 1690 PFRULE_RULESRCTRACK; 1691 break; 1692 case PF_STATE_OPT_MAX_SRC_NODES: 1693 if (r.max_src_nodes) { 1694 yyerror("state option " 1695 "'max-src-nodes' " 1696 "multiple definitions"); 1697 YYERROR; 1698 } 1699 if (o->data.max_src_nodes == 0) { 1700 yyerror("'max-src-nodes' must " 1701 "be > 0"); 1702 YYERROR; 1703 } 1704 r.max_src_nodes = 1705 o->data.max_src_nodes; 1706 r.rule_flag |= PFRULE_SRCTRACK | 1707 PFRULE_RULESRCTRACK; 1708 break; 1709 case PF_STATE_OPT_STATELOCK: 1710 if (statelock) { 1711 yyerror("state locking option: " 1712 "multiple definitions"); 1713 YYERROR; 1714 } 1715 statelock = 1; 1716 r.rule_flag |= o->data.statelock; 1717 break; 1718 case PF_STATE_OPT_TIMEOUT: 1719 if (r.timeout[o->data.timeout.number]) { 1720 yyerror("state timeout %s " 1721 "multiple definitions", 1722 pf_timeouts[o->data. 1723 timeout.number].name); 1724 YYERROR; 1725 } 1726 r.timeout[o->data.timeout.number] = 1727 o->data.timeout.seconds; 1728 } 1729 o = o->next; 1730 free(p); 1731 } 1732 if (r.rule_flag & PFRULE_SRCTRACK) { 1733 if (srctrack == PF_SRCTRACK_GLOBAL && 1734 r.max_src_nodes) { 1735 yyerror("'max-src-nodes' is " 1736 "incompatible with " 1737 "'source-track global'"); 1738 YYERROR; 1739 } 1740 if (srctrack == PF_SRCTRACK_GLOBAL && 1741 r.max_src_conn) { 1742 yyerror("'max-src-conn' is " 1743 "incompatible with " 1744 "'source-track global'"); 1745 YYERROR; 1746 } 1747 if (srctrack == PF_SRCTRACK_GLOBAL && 1748 r.max_src_conn_rate.seconds) { 1749 yyerror("'max-src-conn-rate' is " 1750 "incompatible with " 1751 "'source-track global'"); 1752 YYERROR; 1753 } 1754 if (r.timeout[PFTM_SRC_NODE] < 1755 r.max_src_conn_rate.seconds) 1756 r.timeout[PFTM_SRC_NODE] = 1757 r.max_src_conn_rate.seconds; 1758 r.rule_flag |= PFRULE_SRCTRACK; 1759 if (srctrack == PF_SRCTRACK_RULE) 1760 r.rule_flag |= PFRULE_RULESRCTRACK; 1761 } 1762 if (r.keep_state && !statelock) 1763 r.rule_flag |= default_statelock; 1764 1765 if ($9.fragment) 1766 r.rule_flag |= PFRULE_FRAGMENT; 1767 r.allow_opts = $9.allowopts; 1768 1769 decide_address_family($8.src.host, &r.af); 1770 decide_address_family($8.dst.host, &r.af); 1771 1772 if ($5.rt) { 1773 if (!r.direction) { 1774 yyerror("direction must be explicit " 1775 "with rules that specify routing"); 1776 YYERROR; 1777 } 1778 r.rt = $5.rt; 1779 r.rpool.opts = $5.pool_opts; 1780 if ($5.key != NULL) 1781 memcpy(&r.rpool.key, $5.key, 1782 sizeof(struct pf_poolhashkey)); 1783 } 1784 if (r.rt && r.rt != PF_FASTROUTE) { 1785 decide_address_family($5.host, &r.af); 1786 remove_invalid_hosts(&$5.host, &r.af); 1787 if ($5.host == NULL) { 1788 yyerror("no routing address with " 1789 "matching address family found."); 1790 YYERROR; 1791 } 1792 if ((r.rpool.opts & PF_POOL_TYPEMASK) == 1793 PF_POOL_NONE && ($5.host->next != NULL || 1794 $5.host->addr.type == PF_ADDR_TABLE || 1795 DYNIF_MULTIADDR($5.host->addr))) 1796 r.rpool.opts |= PF_POOL_ROUNDROBIN; 1797 if ((r.rpool.opts & PF_POOL_TYPEMASK) != 1798 PF_POOL_ROUNDROBIN && 1799 disallow_table($5.host, "tables are only " 1800 "supported in round-robin routing pools")) 1801 YYERROR; 1802 if ((r.rpool.opts & PF_POOL_TYPEMASK) != 1803 PF_POOL_ROUNDROBIN && 1804 disallow_alias($5.host, "interface (%s) " 1805 "is only supported in round-robin " 1806 "routing pools")) 1807 YYERROR; 1808 if ($5.host->next != NULL) { 1809 if ((r.rpool.opts & PF_POOL_TYPEMASK) != 1810 PF_POOL_ROUNDROBIN) { 1811 yyerror("r.rpool.opts must " 1812 "be PF_POOL_ROUNDROBIN"); 1813 YYERROR; 1814 } 1815 } 1816 } 1817 if ($9.queues.qname != NULL) { 1818 if (strlcpy(r.qname, $9.queues.qname, 1819 sizeof(r.qname)) >= sizeof(r.qname)) { 1820 yyerror("rule qname too long (max " 1821 "%d chars)", sizeof(r.qname)-1); 1822 YYERROR; 1823 } 1824 free($9.queues.qname); 1825 } 1826 if ($9.queues.pqname != NULL) { 1827 if (strlcpy(r.pqname, $9.queues.pqname, 1828 sizeof(r.pqname)) >= sizeof(r.pqname)) { 1829 yyerror("rule pqname too long (max " 1830 "%d chars)", sizeof(r.pqname)-1); 1831 YYERROR; 1832 } 1833 free($9.queues.pqname); 1834 } 1835 1836 expand_rule(&r, $4, $5.host, $7, $8.src_os, 1837 $8.src.host, $8.src.port, $8.dst.host, $8.dst.port, 1838 $9.uid, $9.gid, $9.icmpspec, ""); 1839 } 1840 ; 1841 1842 1843 opt_statelock : statelock 1844 { 1845 $$ = calloc(1, sizeof(struct node_state_opt)); 1846 if ($$ == NULL) 1847 err(EXIT_FAILURE, "opt_statelock: calloc"); 1848 $$->type = PF_STATE_OPT_STATELOCK; 1849 $$->data.statelock = $1; 1850 $$->next = NULL; 1851 $$->tail = $$; 1852 } 1853 | /* empty */ { 1854 $$ = NULL; 1855 } 1856 ; 1857 1858 filter_opts : { bzero(&filter_opts, sizeof filter_opts); } 1859 filter_opts_l 1860 { $$ = filter_opts; } 1861 | /* empty */ { 1862 bzero(&filter_opts, sizeof filter_opts); 1863 $$ = filter_opts; 1864 } 1865 ; 1866 1867 filter_opts_l : filter_opts_l filter_opt 1868 | filter_opt 1869 ; 1870 1871 filter_opt : USER uids { 1872 if (filter_opts.uid) 1873 $2->tail->next = filter_opts.uid; 1874 filter_opts.uid = $2; 1875 } 1876 | GROUP gids { 1877 if (filter_opts.gid) 1878 $2->tail->next = filter_opts.gid; 1879 filter_opts.gid = $2; 1880 } 1881 | flags { 1882 if (filter_opts.marker & FOM_FLAGS) { 1883 yyerror("flags cannot be redefined"); 1884 YYERROR; 1885 } 1886 filter_opts.marker |= FOM_FLAGS; 1887 filter_opts.flags.b1 |= $1.b1; 1888 filter_opts.flags.b2 |= $1.b2; 1889 filter_opts.flags.w |= $1.w; 1890 filter_opts.flags.w2 |= $1.w2; 1891 } 1892 | icmpspec { 1893 if (filter_opts.marker & FOM_ICMP) { 1894 yyerror("icmp-type cannot be redefined"); 1895 YYERROR; 1896 } 1897 filter_opts.marker |= FOM_ICMP; 1898 filter_opts.icmpspec = $1; 1899 } 1900 | tos { 1901 if (filter_opts.marker & FOM_TOS) { 1902 yyerror("tos cannot be redefined"); 1903 YYERROR; 1904 } 1905 filter_opts.marker |= FOM_TOS; 1906 filter_opts.tos = $1; 1907 } 1908 | keep { 1909 if (filter_opts.marker & FOM_KEEP) { 1910 yyerror("modulate or keep cannot be redefined"); 1911 YYERROR; 1912 } 1913 filter_opts.marker |= FOM_KEEP; 1914 filter_opts.keep.action = $1.action; 1915 filter_opts.keep.options = $1.options; 1916 } 1917 | FRAGMENT { 1918 filter_opts.fragment = 1; 1919 } 1920 | ALLOWOPTS { 1921 filter_opts.allowopts = 1; 1922 } 1923 | label { 1924 if (filter_opts.label) { 1925 yyerror("label cannot be redefined"); 1926 YYERROR; 1927 } 1928 filter_opts.label = $1; 1929 } 1930 | qname { 1931 if (filter_opts.queues.qname) { 1932 yyerror("queue cannot be redefined"); 1933 YYERROR; 1934 } 1935 filter_opts.queues = $1; 1936 } 1937 | TAG string { 1938 filter_opts.tag = $2; 1939 } 1940 | not TAGGED string { 1941 filter_opts.match_tag = $3; 1942 filter_opts.match_tag_not = $1; 1943 } 1944 | PROBABILITY STRING { 1945 char *e; 1946 double p = strtod($2, &e); 1947 1948 if (*e == '%') { 1949 p *= 0.01; 1950 e++; 1951 } 1952 if (*e) { 1953 yyerror("invalid probability: %s", $2); 1954 free($2); 1955 YYERROR; 1956 } 1957 p = floor(p * (UINT_MAX+1.0) + 0.5); 1958 if (p < 1.0 || p >= (UINT_MAX+1.0)) { 1959 yyerror("invalid probability: %s", $2); 1960 free($2); 1961 YYERROR; 1962 } 1963 filter_opts.prob = (u_int32_t)p; 1964 free($2); 1965 } 1966 ; 1967 1968 action : PASS { $$.b1 = PF_PASS; $$.b2 = $$.w = 0; } 1969 | BLOCK blockspec { $$ = $2; $$.b1 = PF_DROP; } 1970 ; 1971 1972 blockspec : /* empty */ { 1973 $$.b2 = blockpolicy; 1974 $$.w = returnicmpdefault; 1975 $$.w2 = returnicmp6default; 1976 } 1977 | DROP { 1978 $$.b2 = PFRULE_DROP; 1979 $$.w = 0; 1980 $$.w2 = 0; 1981 } 1982 | RETURNRST { 1983 $$.b2 = PFRULE_RETURNRST; 1984 $$.w = 0; 1985 $$.w2 = 0; 1986 } 1987 | RETURNRST '(' TTL number ')' { 1988 if ($4 > 255) { 1989 yyerror("illegal ttl value %d", $4); 1990 YYERROR; 1991 } 1992 $$.b2 = PFRULE_RETURNRST; 1993 $$.w = $4; 1994 $$.w2 = 0; 1995 } 1996 | RETURNICMP { 1997 $$.b2 = PFRULE_RETURNICMP; 1998 $$.w = returnicmpdefault; 1999 $$.w2 = returnicmp6default; 2000 } 2001 | RETURNICMP6 { 2002 $$.b2 = PFRULE_RETURNICMP; 2003 $$.w = returnicmpdefault; 2004 $$.w2 = returnicmp6default; 2005 } 2006 | RETURNICMP '(' STRING ')' { 2007 $$.b2 = PFRULE_RETURNICMP; 2008 if (!($$.w = parseicmpspec($3, AF_INET))) { 2009 free($3); 2010 YYERROR; 2011 } 2012 free($3); 2013 $$.w2 = returnicmp6default; 2014 } 2015 | RETURNICMP6 '(' STRING ')' { 2016 $$.b2 = PFRULE_RETURNICMP; 2017 $$.w = returnicmpdefault; 2018 if (!($$.w2 = parseicmpspec($3, AF_INET6))) { 2019 free($3); 2020 YYERROR; 2021 } 2022 free($3); 2023 } 2024 | RETURNICMP '(' STRING comma STRING ')' { 2025 $$.b2 = PFRULE_RETURNICMP; 2026 if (!($$.w = parseicmpspec($3, AF_INET)) || 2027 !($$.w2 = parseicmpspec($5, AF_INET6))) { 2028 free($3); 2029 free($5); 2030 YYERROR; 2031 } 2032 free($3); 2033 free($5); 2034 } 2035 | RETURN { 2036 $$.b2 = PFRULE_RETURN; 2037 $$.w = returnicmpdefault; 2038 $$.w2 = returnicmp6default; 2039 } 2040 ; 2041 2042 dir : /* empty */ { $$ = 0; } 2043 | IN { $$ = PF_IN; } 2044 | OUT { $$ = PF_OUT; } 2045 ; 2046 2047 logquick : /* empty */ { $$.log = 0; $$.quick = 0; } 2048 | log { $$.log = $1; $$.quick = 0; } 2049 | QUICK { $$.log = 0; $$.quick = 1; } 2050 | log QUICK { $$.log = $1; $$.quick = 1; } 2051 | QUICK log { $$.log = $2; $$.quick = 1; } 2052 ; 2053 2054 log : LOG { $$ = 1; } 2055 | LOGALL { $$ = 2; } 2056 ; 2057 2058 interface : /* empty */ { $$ = NULL; } 2059 | ON if_item_not { $$ = $2; } 2060 | ON '{' if_list '}' { $$ = $3; } 2061 ; 2062 2063 if_list : if_item_not { $$ = $1; } 2064 | if_list comma if_item_not { 2065 $1->tail->next = $3; 2066 $1->tail = $3; 2067 $$ = $1; 2068 } 2069 ; 2070 2071 if_item_not : not if_item { $$ = $2; $$->not = $1; } 2072 ; 2073 2074 if_item : STRING { 2075 struct node_host *n; 2076 2077 $$ = calloc(1, sizeof(struct node_if)); 2078 if ($$ == NULL) 2079 err(1, "if_item: calloc"); 2080 if (strlcpy($$->ifname, $1, sizeof($$->ifname)) >= 2081 sizeof($$->ifname)) { 2082 free($1); 2083 free($$); 2084 yyerror("interface name too long"); 2085 YYERROR; 2086 } 2087 2088 if ((n = ifa_exists($1, 1)) != NULL) 2089 $$->ifa_flags = n->ifa_flags; 2090 2091 free($1); 2092 $$->not = 0; 2093 $$->next = NULL; 2094 $$->tail = $$; 2095 } 2096 ; 2097 2098 af : /* empty */ { $$ = 0; } 2099 | INET { $$ = AF_INET; } 2100 | INET6 { $$ = AF_INET6; } 2101 ; 2102 2103 proto : /* empty */ { $$ = NULL; } 2104 | PROTO proto_item { $$ = $2; } 2105 | PROTO '{' proto_list '}' { $$ = $3; } 2106 ; 2107 2108 proto_list : proto_item { $$ = $1; } 2109 | proto_list comma proto_item { 2110 $1->tail->next = $3; 2111 $1->tail = $3; 2112 $$ = $1; 2113 } 2114 ; 2115 2116 proto_item : STRING { 2117 u_int8_t pr; 2118 u_long ulval; 2119 2120 if (atoul($1, &ulval) == 0) { 2121 if (ulval > 255) { 2122 yyerror("protocol outside range"); 2123 free($1); 2124 YYERROR; 2125 } 2126 pr = (u_int8_t)ulval; 2127 } else { 2128 struct protoent *p; 2129 2130 p = getprotobyname($1); 2131 if (p == NULL) { 2132 yyerror("unknown protocol %s", $1); 2133 free($1); 2134 YYERROR; 2135 } 2136 pr = p->p_proto; 2137 } 2138 free($1); 2139 if (pr == 0) { 2140 yyerror("proto 0 cannot be used"); 2141 YYERROR; 2142 } 2143 $$ = calloc(1, sizeof(struct node_proto)); 2144 if ($$ == NULL) 2145 err(1, "proto_item: calloc"); 2146 $$->proto = pr; 2147 $$->next = NULL; 2148 $$->tail = $$; 2149 } 2150 ; 2151 2152 fromto : ALL { 2153 $$.src.host = NULL; 2154 $$.src.port = NULL; 2155 $$.dst.host = NULL; 2156 $$.dst.port = NULL; 2157 $$.src_os = NULL; 2158 } 2159 | from os to { 2160 $$.src = $1; 2161 $$.src_os = $2; 2162 $$.dst = $3; 2163 } 2164 ; 2165 2166 os : /* empty */ { $$ = NULL; } 2167 | OS xos { $$ = $2; } 2168 | OS '{' os_list '}' { $$ = $3; } 2169 ; 2170 2171 xos : STRING { 2172 $$ = calloc(1, sizeof(struct node_os)); 2173 if ($$ == NULL) 2174 err(1, "os: calloc"); 2175 $$->os = $1; 2176 $$->tail = $$; 2177 } 2178 ; 2179 2180 os_list : xos { $$ = $1; } 2181 | os_list comma xos { 2182 $1->tail->next = $3; 2183 $1->tail = $3; 2184 $$ = $1; 2185 } 2186 ; 2187 2188 from : /* empty */ { 2189 $$.host = NULL; 2190 $$.port = NULL; 2191 } 2192 | FROM ipportspec { 2193 $$ = $2; 2194 } 2195 ; 2196 2197 to : /* empty */ { 2198 $$.host = NULL; 2199 $$.port = NULL; 2200 } 2201 | TO ipportspec { 2202 $$ = $2; 2203 } 2204 ; 2205 2206 ipportspec : ipspec { 2207 $$.host = $1; 2208 $$.port = NULL; 2209 } 2210 | ipspec PORT portspec { 2211 $$.host = $1; 2212 $$.port = $3; 2213 } 2214 | PORT portspec { 2215 $$.host = NULL; 2216 $$.port = $2; 2217 } 2218 ; 2219 2220 ipspec : ANY { $$ = NULL; } 2221 | xhost { $$ = $1; } 2222 | '{' host_list '}' { $$ = $2; } 2223 ; 2224 2225 host_list : xhost { $$ = $1; } 2226 | host_list comma xhost { 2227 if ($3 == NULL) 2228 $$ = $1; 2229 else if ($1 == NULL) 2230 $$ = $3; 2231 else { 2232 $1->tail->next = $3; 2233 $1->tail = $3->tail; 2234 $$ = $1; 2235 } 2236 } 2237 ; 2238 2239 xhost : not host { 2240 struct node_host *n; 2241 2242 for (n = $2; n != NULL; n = n->next) 2243 n->not = $1; 2244 $$ = $2; 2245 } 2246 | NOROUTE { 2247 $$ = calloc(1, sizeof(struct node_host)); 2248 if ($$ == NULL) 2249 err(1, "xhost: calloc"); 2250 $$->addr.type = PF_ADDR_NOROUTE; 2251 $$->next = NULL; 2252 $$->tail = $$; 2253 } 2254 ; 2255 2256 host : STRING { 2257 if (($$ = host($1)) == NULL) { 2258 /* error. "any" is handled elsewhere */ 2259 free($1); 2260 yyerror("could not parse host specification"); 2261 YYERROR; 2262 } 2263 free($1); 2264 2265 } 2266 | STRING '/' number { 2267 char *buf; 2268 2269 if (asprintf(&buf, "%s/%u", $1, $3) == -1) 2270 err(1, "host: asprintf"); 2271 free($1); 2272 if (($$ = host(buf)) == NULL) { 2273 /* error. "any" is handled elsewhere */ 2274 free(buf); 2275 yyerror("could not parse host specification"); 2276 YYERROR; 2277 } 2278 free(buf); 2279 } 2280 | dynaddr 2281 | dynaddr '/' number { 2282 struct node_host *n; 2283 2284 $$ = $1; 2285 for (n = $1; n != NULL; n = n->next) 2286 set_ipmask(n, $3); 2287 } 2288 | '<' STRING '>' { 2289 if (strlen($2) >= PF_TABLE_NAME_SIZE) { 2290 yyerror("table name '%s' too long", $2); 2291 free($2); 2292 YYERROR; 2293 } 2294 $$ = calloc(1, sizeof(struct node_host)); 2295 if ($$ == NULL) 2296 err(1, "host: calloc"); 2297 $$->addr.type = PF_ADDR_TABLE; 2298 if (strlcpy($$->addr.v.tblname, $2, 2299 sizeof($$->addr.v.tblname)) >= 2300 sizeof($$->addr.v.tblname)) 2301 errx(1, "host: strlcpy"); 2302 free($2); 2303 $$->next = NULL; 2304 $$->tail = $$; 2305 } 2306 | ROUTE STRING { 2307 $$ = calloc(1, sizeof(struct node_host)); 2308 if ($$ == NULL) { 2309 free($2); 2310 err(1, "host: calloc"); 2311 } 2312 $$->addr.type = PF_ADDR_RTLABEL; 2313 if (strlcpy($$->addr.v.rtlabelname, $2, 2314 sizeof($$->addr.v.rtlabelname)) >= 2315 sizeof($$->addr.v.rtlabelname)) { 2316 yyerror("route label too long, max %u chars", 2317 sizeof($$->addr.v.rtlabelname) - 1); 2318 free($2); 2319 free($$); 2320 YYERROR; 2321 } 2322 $$->next = NULL; 2323 $$->tail = $$; 2324 free($2); 2325 } 2326 ; 2327 2328 number : STRING { 2329 u_long ulval; 2330 2331 if (atoul($1, &ulval) == -1) { 2332 yyerror("%s is not a number", $1); 2333 free($1); 2334 YYERROR; 2335 } else 2336 $$ = ulval; 2337 free($1); 2338 } 2339 ; 2340 2341 dynaddr : '(' STRING ')' { 2342 int flags = 0; 2343 char *p, *op; 2344 2345 op = $2; 2346 if (!isalpha((unsigned char)op[0])) { 2347 yyerror("invalid interface name '%s'", op); 2348 free(op); 2349 YYERROR; 2350 } 2351 while ((p = strrchr($2, ':')) != NULL) { 2352 if (!strcmp(p+1, "network")) 2353 flags |= PFI_AFLAG_NETWORK; 2354 else if (!strcmp(p+1, "broadcast")) 2355 flags |= PFI_AFLAG_BROADCAST; 2356 else if (!strcmp(p+1, "peer")) 2357 flags |= PFI_AFLAG_PEER; 2358 else if (!strcmp(p+1, "0")) 2359 flags |= PFI_AFLAG_NOALIAS; 2360 else { 2361 yyerror("interface %s has bad modifier", 2362 $2); 2363 free(op); 2364 YYERROR; 2365 } 2366 *p = '\0'; 2367 } 2368 if (flags & (flags - 1) & PFI_AFLAG_MODEMASK) { 2369 free(op); 2370 yyerror("illegal combination of " 2371 "interface modifiers"); 2372 YYERROR; 2373 } 2374 $$ = calloc(1, sizeof(struct node_host)); 2375 if ($$ == NULL) 2376 err(1, "address: calloc"); 2377 $$->af = 0; 2378 set_ipmask($$, 128); 2379 $$->addr.type = PF_ADDR_DYNIFTL; 2380 $$->addr.iflags = flags; 2381 if (strlcpy($$->addr.v.ifname, $2, 2382 sizeof($$->addr.v.ifname)) >= 2383 sizeof($$->addr.v.ifname)) { 2384 free(op); 2385 free($$); 2386 yyerror("interface name too long"); 2387 YYERROR; 2388 } 2389 free(op); 2390 $$->next = NULL; 2391 $$->tail = $$; 2392 } 2393 ; 2394 2395 portspec : port_item { $$ = $1; } 2396 | '{' port_list '}' { $$ = $2; } 2397 ; 2398 2399 port_list : port_item { $$ = $1; } 2400 | port_list comma port_item { 2401 $1->tail->next = $3; 2402 $1->tail = $3; 2403 $$ = $1; 2404 } 2405 ; 2406 2407 port_item : port { 2408 $$ = calloc(1, sizeof(struct node_port)); 2409 if ($$ == NULL) 2410 err(1, "port_item: calloc"); 2411 $$->port[0] = $1.a; 2412 $$->port[1] = $1.b; 2413 if ($1.t) 2414 $$->op = PF_OP_RRG; 2415 else 2416 $$->op = PF_OP_EQ; 2417 $$->next = NULL; 2418 $$->tail = $$; 2419 } 2420 | unaryop port { 2421 if ($2.t) { 2422 yyerror("':' cannot be used with an other " 2423 "port operator"); 2424 YYERROR; 2425 } 2426 $$ = calloc(1, sizeof(struct node_port)); 2427 if ($$ == NULL) 2428 err(1, "port_item: calloc"); 2429 $$->port[0] = $2.a; 2430 $$->port[1] = $2.b; 2431 $$->op = $1; 2432 $$->next = NULL; 2433 $$->tail = $$; 2434 } 2435 | port PORTBINARY port { 2436 if ($1.t || $3.t) { 2437 yyerror("':' cannot be used with an other " 2438 "port operator"); 2439 YYERROR; 2440 } 2441 $$ = calloc(1, sizeof(struct node_port)); 2442 if ($$ == NULL) 2443 err(1, "port_item: calloc"); 2444 $$->port[0] = $1.a; 2445 $$->port[1] = $3.a; 2446 $$->op = $2; 2447 $$->next = NULL; 2448 $$->tail = $$; 2449 } 2450 ; 2451 2452 port : STRING { 2453 char *p = strchr($1, ':'); 2454 struct servent *s = NULL; 2455 u_long ulval; 2456 2457 if (p == NULL) { 2458 if (atoul($1, &ulval) == 0) { 2459 if (ulval > 65535) { 2460 free($1); 2461 yyerror("illegal port value %lu", 2462 ulval); 2463 YYERROR; 2464 } 2465 $$.a = htons(ulval); 2466 } else { 2467 s = getservbyname($1, "tcp"); 2468 if (s == NULL) 2469 s = getservbyname($1, "udp"); 2470 if (s == NULL) { 2471 yyerror("unknown port %s", $1); 2472 free($1); 2473 YYERROR; 2474 } 2475 $$.a = s->s_port; 2476 } 2477 $$.b = 0; 2478 $$.t = 0; 2479 } else { 2480 int port[2]; 2481 2482 *p++ = 0; 2483 if ((port[0] = getservice($1)) == -1 || 2484 (port[1] = getservice(p)) == -1) { 2485 free($1); 2486 YYERROR; 2487 } 2488 $$.a = port[0]; 2489 $$.b = port[1]; 2490 $$.t = PF_OP_RRG; 2491 } 2492 free($1); 2493 } 2494 ; 2495 2496 uids : uid_item { $$ = $1; } 2497 | '{' uid_list '}' { $$ = $2; } 2498 ; 2499 2500 uid_list : uid_item { $$ = $1; } 2501 | uid_list comma uid_item { 2502 $1->tail->next = $3; 2503 $1->tail = $3; 2504 $$ = $1; 2505 } 2506 ; 2507 2508 uid_item : uid { 2509 $$ = calloc(1, sizeof(struct node_uid)); 2510 if ($$ == NULL) 2511 err(1, "uid_item: calloc"); 2512 $$->uid[0] = $1; 2513 $$->uid[1] = $1; 2514 $$->op = PF_OP_EQ; 2515 $$->next = NULL; 2516 $$->tail = $$; 2517 } 2518 | unaryop uid { 2519 if ($2 == UID_MAX && $1 != PF_OP_EQ && $1 != PF_OP_NE) { 2520 yyerror("user unknown requires operator = or " 2521 "!="); 2522 YYERROR; 2523 } 2524 $$ = calloc(1, sizeof(struct node_uid)); 2525 if ($$ == NULL) 2526 err(1, "uid_item: calloc"); 2527 $$->uid[0] = $2; 2528 $$->uid[1] = $2; 2529 $$->op = $1; 2530 $$->next = NULL; 2531 $$->tail = $$; 2532 } 2533 | uid PORTBINARY uid { 2534 if ($1 == UID_MAX || $3 == UID_MAX) { 2535 yyerror("user unknown requires operator = or " 2536 "!="); 2537 YYERROR; 2538 } 2539 $$ = calloc(1, sizeof(struct node_uid)); 2540 if ($$ == NULL) 2541 err(1, "uid_item: calloc"); 2542 $$->uid[0] = $1; 2543 $$->uid[1] = $3; 2544 $$->op = $2; 2545 $$->next = NULL; 2546 $$->tail = $$; 2547 } 2548 ; 2549 2550 uid : STRING { 2551 u_long ulval; 2552 2553 if (atoul($1, &ulval) == -1) { 2554 if (!strcmp($1, "unknown")) 2555 $$ = UID_MAX; 2556 else { 2557 struct passwd *pw; 2558 2559 if ((pw = getpwnam($1)) == NULL) { 2560 yyerror("unknown user %s", $1); 2561 free($1); 2562 YYERROR; 2563 } 2564 $$ = pw->pw_uid; 2565 } 2566 } else { 2567 if (ulval >= UID_MAX) { 2568 free($1); 2569 yyerror("illegal uid value %lu", ulval); 2570 YYERROR; 2571 } 2572 $$ = ulval; 2573 } 2574 free($1); 2575 } 2576 ; 2577 2578 gids : gid_item { $$ = $1; } 2579 | '{' gid_list '}' { $$ = $2; } 2580 ; 2581 2582 gid_list : gid_item { $$ = $1; } 2583 | gid_list comma gid_item { 2584 $1->tail->next = $3; 2585 $1->tail = $3; 2586 $$ = $1; 2587 } 2588 ; 2589 2590 gid_item : gid { 2591 $$ = calloc(1, sizeof(struct node_gid)); 2592 if ($$ == NULL) 2593 err(1, "gid_item: calloc"); 2594 $$->gid[0] = $1; 2595 $$->gid[1] = $1; 2596 $$->op = PF_OP_EQ; 2597 $$->next = NULL; 2598 $$->tail = $$; 2599 } 2600 | unaryop gid { 2601 if ($2 == GID_MAX && $1 != PF_OP_EQ && $1 != PF_OP_NE) { 2602 yyerror("group unknown requires operator = or " 2603 "!="); 2604 YYERROR; 2605 } 2606 $$ = calloc(1, sizeof(struct node_gid)); 2607 if ($$ == NULL) 2608 err(1, "gid_item: calloc"); 2609 $$->gid[0] = $2; 2610 $$->gid[1] = $2; 2611 $$->op = $1; 2612 $$->next = NULL; 2613 $$->tail = $$; 2614 } 2615 | gid PORTBINARY gid { 2616 if ($1 == GID_MAX || $3 == GID_MAX) { 2617 yyerror("group unknown requires operator = or " 2618 "!="); 2619 YYERROR; 2620 } 2621 $$ = calloc(1, sizeof(struct node_gid)); 2622 if ($$ == NULL) 2623 err(1, "gid_item: calloc"); 2624 $$->gid[0] = $1; 2625 $$->gid[1] = $3; 2626 $$->op = $2; 2627 $$->next = NULL; 2628 $$->tail = $$; 2629 } 2630 ; 2631 2632 gid : STRING { 2633 u_long ulval; 2634 2635 if (atoul($1, &ulval) == -1) { 2636 if (!strcmp($1, "unknown")) 2637 $$ = GID_MAX; 2638 else { 2639 struct group *grp; 2640 2641 if ((grp = getgrnam($1)) == NULL) { 2642 yyerror("unknown group %s", $1); 2643 free($1); 2644 YYERROR; 2645 } 2646 $$ = grp->gr_gid; 2647 } 2648 } else { 2649 if (ulval >= GID_MAX) { 2650 yyerror("illegal gid value %lu", ulval); 2651 free($1); 2652 YYERROR; 2653 } 2654 $$ = ulval; 2655 } 2656 free($1); 2657 } 2658 ; 2659 2660 flag : STRING { 2661 int f; 2662 2663 if ((f = parse_flags($1)) < 0) { 2664 yyerror("bad flags %s", $1); 2665 free($1); 2666 YYERROR; 2667 } 2668 free($1); 2669 $$.b1 = f; 2670 } 2671 ; 2672 2673 flags : FLAGS flag '/' flag { $$.b1 = $2.b1; $$.b2 = $4.b1; } 2674 | FLAGS '/' flag { $$.b1 = 0; $$.b2 = $3.b1; } 2675 ; 2676 2677 icmpspec : ICMPTYPE icmp_item { $$ = $2; } 2678 | ICMPTYPE '{' icmp_list '}' { $$ = $3; } 2679 | ICMP6TYPE icmp6_item { $$ = $2; } 2680 | ICMP6TYPE '{' icmp6_list '}' { $$ = $3; } 2681 ; 2682 2683 icmp_list : icmp_item { $$ = $1; } 2684 | icmp_list comma icmp_item { 2685 $1->tail->next = $3; 2686 $1->tail = $3; 2687 $$ = $1; 2688 } 2689 ; 2690 2691 icmp6_list : icmp6_item { $$ = $1; } 2692 | icmp6_list comma icmp6_item { 2693 $1->tail->next = $3; 2694 $1->tail = $3; 2695 $$ = $1; 2696 } 2697 ; 2698 2699 icmp_item : icmptype { 2700 $$ = calloc(1, sizeof(struct node_icmp)); 2701 if ($$ == NULL) 2702 err(1, "icmp_item: calloc"); 2703 $$->type = $1; 2704 $$->code = 0; 2705 $$->proto = IPPROTO_ICMP; 2706 $$->next = NULL; 2707 $$->tail = $$; 2708 } 2709 | icmptype CODE STRING { 2710 const struct icmpcodeent *p; 2711 u_long ulval; 2712 2713 if (atoul($3, &ulval) == 0) { 2714 if (ulval > 255) { 2715 free($3); 2716 yyerror("illegal icmp-code %lu", ulval); 2717 YYERROR; 2718 } 2719 } else { 2720 if ((p = geticmpcodebyname($1-1, $3, 2721 AF_INET)) == NULL) { 2722 yyerror("unknown icmp-code %s", $3); 2723 free($3); 2724 YYERROR; 2725 } 2726 ulval = p->code; 2727 } 2728 free($3); 2729 $$ = calloc(1, sizeof(struct node_icmp)); 2730 if ($$ == NULL) 2731 err(1, "icmp_item: calloc"); 2732 $$->type = $1; 2733 $$->code = ulval + 1; 2734 $$->proto = IPPROTO_ICMP; 2735 $$->next = NULL; 2736 $$->tail = $$; 2737 } 2738 ; 2739 2740 icmp6_item : icmp6type { 2741 $$ = calloc(1, sizeof(struct node_icmp)); 2742 if ($$ == NULL) 2743 err(1, "icmp_item: calloc"); 2744 $$->type = $1; 2745 $$->code = 0; 2746 $$->proto = IPPROTO_ICMPV6; 2747 $$->next = NULL; 2748 $$->tail = $$; 2749 } 2750 | icmp6type CODE STRING { 2751 const struct icmpcodeent *p; 2752 u_long ulval; 2753 2754 if (atoul($3, &ulval) == 0) { 2755 if (ulval > 255) { 2756 yyerror("illegal icmp6-code %lu", 2757 ulval); 2758 free($3); 2759 YYERROR; 2760 } 2761 } else { 2762 if ((p = geticmpcodebyname($1-1, $3, 2763 AF_INET6)) == NULL) { 2764 yyerror("unknown icmp6-code %s", $3); 2765 free($3); 2766 YYERROR; 2767 } 2768 ulval = p->code; 2769 } 2770 free($3); 2771 $$ = calloc(1, sizeof(struct node_icmp)); 2772 if ($$ == NULL) 2773 err(1, "icmp_item: calloc"); 2774 $$->type = $1; 2775 $$->code = ulval + 1; 2776 $$->proto = IPPROTO_ICMPV6; 2777 $$->next = NULL; 2778 $$->tail = $$; 2779 } 2780 ; 2781 2782 icmptype : STRING { 2783 const struct icmptypeent *p; 2784 u_long ulval; 2785 2786 if (atoul($1, &ulval) == 0) { 2787 if (ulval > 255) { 2788 yyerror("illegal icmp-type %lu", ulval); 2789 free($1); 2790 YYERROR; 2791 } 2792 $$ = ulval + 1; 2793 } else { 2794 if ((p = geticmptypebyname($1, AF_INET)) == 2795 NULL) { 2796 yyerror("unknown icmp-type %s", $1); 2797 free($1); 2798 YYERROR; 2799 } 2800 $$ = p->type + 1; 2801 } 2802 free($1); 2803 } 2804 ; 2805 2806 icmp6type : STRING { 2807 const struct icmptypeent *p; 2808 u_long ulval; 2809 2810 if (atoul($1, &ulval) == 0) { 2811 if (ulval > 255) { 2812 yyerror("illegal icmp6-type %lu", ulval); 2813 free($1); 2814 YYERROR; 2815 } 2816 $$ = ulval + 1; 2817 } else { 2818 if ((p = geticmptypebyname($1, AF_INET6)) == 2819 NULL) { 2820 yyerror("unknown icmp6-type %s", $1); 2821 free($1); 2822 YYERROR; 2823 } 2824 $$ = p->type + 1; 2825 } 2826 free($1); 2827 } 2828 ; 2829 2830 tos : TOS STRING { 2831 if (!strcmp($2, "lowdelay")) 2832 $$ = IPTOS_LOWDELAY; 2833 else if (!strcmp($2, "throughput")) 2834 $$ = IPTOS_THROUGHPUT; 2835 else if (!strcmp($2, "reliability")) 2836 $$ = IPTOS_RELIABILITY; 2837 else if ($2[0] == '0' && $2[1] == 'x') 2838 $$ = strtoul($2, NULL, 16); 2839 else 2840 $$ = strtoul($2, NULL, 10); 2841 if (!$$ || $$ > 255) { 2842 yyerror("illegal tos value %s", $2); 2843 free($2); 2844 YYERROR; 2845 } 2846 free($2); 2847 } 2848 ; 2849 2850 sourcetrack : SOURCETRACK { $$ = PF_SRCTRACK; } 2851 | SOURCETRACK GLOBAL { $$ = PF_SRCTRACK_GLOBAL; } 2852 | SOURCETRACK RULE { $$ = PF_SRCTRACK_RULE; } 2853 ; 2854 2855 statelock : IFBOUND { 2856 $$ = PFRULE_IFBOUND; 2857 } 2858 | GRBOUND { 2859 $$ = PFRULE_GRBOUND; 2860 } 2861 | FLOATING { 2862 $$ = 0; 2863 } 2864 ; 2865 2866 keep : KEEP STATE state_opt_spec { 2867 $$.action = PF_STATE_NORMAL; 2868 $$.options = $3; 2869 } 2870 | MODULATE STATE state_opt_spec { 2871 $$.action = PF_STATE_MODULATE; 2872 $$.options = $3; 2873 } 2874 | SYNPROXY STATE state_opt_spec { 2875 $$.action = PF_STATE_SYNPROXY; 2876 $$.options = $3; 2877 } 2878 ; 2879 2880 flush : /* empty */ { $$ = 0; } 2881 | FLUSH { $$ = PF_FLUSH; } 2882 | FLUSH GLOBAL { 2883 $$ = PF_FLUSH | PF_FLUSH_GLOBAL; 2884 } 2885 ; 2886 2887 state_opt_spec : '(' state_opt_list ')' { $$ = $2; } 2888 | /* empty */ { $$ = NULL; } 2889 ; 2890 2891 state_opt_list : state_opt_item { $$ = $1; } 2892 | state_opt_list comma state_opt_item { 2893 $1->tail->next = $3; 2894 $1->tail = $3; 2895 $$ = $1; 2896 } 2897 ; 2898 2899 state_opt_item : MAXIMUM number { 2900 $$ = calloc(1, sizeof(struct node_state_opt)); 2901 if ($$ == NULL) 2902 err(1, "state_opt_item: calloc"); 2903 $$->type = PF_STATE_OPT_MAX; 2904 $$->data.max_states = $2; 2905 $$->next = NULL; 2906 $$->tail = $$; 2907 } 2908 | NOSYNC { 2909 $$ = calloc(1, sizeof(struct node_state_opt)); 2910 if ($$ == NULL) 2911 err(1, "state_opt_item: calloc"); 2912 $$->type = PF_STATE_OPT_NOSYNC; 2913 $$->next = NULL; 2914 $$->tail = $$; 2915 } 2916 | MAXSRCSTATES number { 2917 $$ = calloc(1, sizeof(struct node_state_opt)); 2918 if ($$ == NULL) 2919 err(1, "state_opt_item: calloc"); 2920 $$->type = PF_STATE_OPT_MAX_SRC_STATES; 2921 $$->data.max_src_states = $2; 2922 $$->next = NULL; 2923 $$->tail = $$; 2924 } 2925 | MAXSRCCONN number { 2926 $$ = calloc(1, sizeof(struct node_state_opt)); 2927 if ($$ == NULL) 2928 err(1, "state_opt_item: calloc"); 2929 $$->type = PF_STATE_OPT_MAX_SRC_CONN; 2930 $$->data.max_src_conn = $2; 2931 $$->next = NULL; 2932 $$->tail = $$; 2933 } 2934 | MAXSRCCONNRATE number '/' number { 2935 $$ = calloc(1, sizeof(struct node_state_opt)); 2936 if ($$ == NULL) 2937 err(1, "state_opt_item: calloc"); 2938 $$->type = PF_STATE_OPT_MAX_SRC_CONN_RATE; 2939 $$->data.max_src_conn_rate.limit = $2; 2940 $$->data.max_src_conn_rate.seconds = $4; 2941 $$->next = NULL; 2942 $$->tail = $$; 2943 } 2944 | OVERLOAD '<' STRING '>' flush { 2945 if (strlen($3) >= PF_TABLE_NAME_SIZE) { 2946 yyerror("table name '%s' too long", $3); 2947 free($3); 2948 YYERROR; 2949 } 2950 $$ = calloc(1, sizeof(struct node_state_opt)); 2951 if ($$ == NULL) 2952 err(1, "state_opt_item: calloc"); 2953 if (strlcpy($$->data.overload.tblname, $3, 2954 PF_TABLE_NAME_SIZE) >= PF_TABLE_NAME_SIZE) 2955 errx(1, "state_opt_item: strlcpy"); 2956 free($3); 2957 $$->type = PF_STATE_OPT_OVERLOAD; 2958 $$->data.overload.flush = $5; 2959 $$->next = NULL; 2960 $$->tail = $$; 2961 } 2962 | MAXSRCNODES number { 2963 $$ = calloc(1, sizeof(struct node_state_opt)); 2964 if ($$ == NULL) 2965 err(1, "state_opt_item: calloc"); 2966 $$->type = PF_STATE_OPT_MAX_SRC_NODES; 2967 $$->data.max_src_nodes = $2; 2968 $$->next = NULL; 2969 $$->tail = $$; 2970 } 2971 | sourcetrack { 2972 $$ = calloc(1, sizeof(struct node_state_opt)); 2973 if ($$ == NULL) 2974 err(1, "state_opt_item: calloc"); 2975 $$->type = PF_STATE_OPT_SRCTRACK; 2976 $$->data.src_track = $1; 2977 $$->next = NULL; 2978 $$->tail = $$; 2979 } 2980 | statelock { 2981 $$ = calloc(1, sizeof(struct node_state_opt)); 2982 if ($$ == NULL) 2983 err(1, "state_opt_item: calloc"); 2984 $$->type = PF_STATE_OPT_STATELOCK; 2985 $$->data.statelock = $1; 2986 $$->next = NULL; 2987 $$->tail = $$; 2988 } 2989 | STRING number { 2990 int i; 2991 2992 for (i = 0; pf_timeouts[i].name && 2993 strcmp(pf_timeouts[i].name, $1); ++i) 2994 ; /* nothing */ 2995 if (!pf_timeouts[i].name) { 2996 yyerror("illegal timeout name %s", $1); 2997 free($1); 2998 YYERROR; 2999 } 3000 if (strchr(pf_timeouts[i].name, '.') == NULL) { 3001 yyerror("illegal state timeout %s", $1); 3002 free($1); 3003 YYERROR; 3004 } 3005 free($1); 3006 $$ = calloc(1, sizeof(struct node_state_opt)); 3007 if ($$ == NULL) 3008 err(1, "state_opt_item: calloc"); 3009 $$->type = PF_STATE_OPT_TIMEOUT; 3010 $$->data.timeout.number = pf_timeouts[i].timeout; 3011 $$->data.timeout.seconds = $2; 3012 $$->next = NULL; 3013 $$->tail = $$; 3014 } 3015 ; 3016 3017 label : LABEL STRING { 3018 $$ = $2; 3019 } 3020 ; 3021 3022 qname : QUEUE STRING { 3023 $$.qname = $2; 3024 } 3025 | QUEUE '(' STRING ')' { 3026 $$.qname = $3; 3027 } 3028 | QUEUE '(' STRING comma STRING ')' { 3029 $$.qname = $3; 3030 $$.pqname = $5; 3031 } 3032 ; 3033 3034 no : /* empty */ { $$ = 0; } 3035 | NO { $$ = 1; } 3036 ; 3037 3038 rport : STRING { 3039 char *p = strchr($1, ':'); 3040 3041 if (p == NULL) { 3042 if (($$.a = getservice($1)) == -1) { 3043 free($1); 3044 YYERROR; 3045 } 3046 $$.b = $$.t = 0; 3047 } else if (!strcmp(p+1, "*")) { 3048 *p = 0; 3049 if (($$.a = getservice($1)) == -1) { 3050 free($1); 3051 YYERROR; 3052 } 3053 $$.b = 0; 3054 $$.t = 1; 3055 } else { 3056 *p++ = 0; 3057 if (($$.a = getservice($1)) == -1 || 3058 ($$.b = getservice(p)) == -1) { 3059 free($1); 3060 YYERROR; 3061 } 3062 if ($$.a == $$.b) 3063 $$.b = 0; 3064 $$.t = 0; 3065 } 3066 free($1); 3067 } 3068 ; 3069 3070 redirspec : host { $$ = $1; } 3071 | '{' redir_host_list '}' { $$ = $2; } 3072 ; 3073 3074 redir_host_list : host { $$ = $1; } 3075 | redir_host_list comma host { 3076 $1->tail->next = $3; 3077 $1->tail = $3->tail; 3078 $$ = $1; 3079 } 3080 ; 3081 3082 redirpool : /* empty */ { $$ = NULL; } 3083 | ARROW redirspec { 3084 $$ = calloc(1, sizeof(struct redirection)); 3085 if ($$ == NULL) 3086 err(1, "redirection: calloc"); 3087 $$->host = $2; 3088 $$->rport.a = $$->rport.b = $$->rport.t = 0; 3089 } 3090 | ARROW redirspec PORT rport { 3091 $$ = calloc(1, sizeof(struct redirection)); 3092 if ($$ == NULL) 3093 err(1, "redirection: calloc"); 3094 $$->host = $2; 3095 $$->rport = $4; 3096 } 3097 ; 3098 3099 hashkey : /* empty */ 3100 { 3101 $$ = calloc(1, sizeof(struct pf_poolhashkey)); 3102 if ($$ == NULL) 3103 err(1, "hashkey: calloc"); 3104 $$->key32[0] = arc4random(); 3105 $$->key32[1] = arc4random(); 3106 $$->key32[2] = arc4random(); 3107 $$->key32[3] = arc4random(); 3108 } 3109 | string 3110 { 3111 if (!strncmp($1, "0x", 2)) { 3112 if (strlen($1) != 34) { 3113 free($1); 3114 yyerror("hex key must be 128 bits " 3115 "(32 hex digits) long"); 3116 YYERROR; 3117 } 3118 $$ = calloc(1, sizeof(struct pf_poolhashkey)); 3119 if ($$ == NULL) 3120 err(1, "hashkey: calloc"); 3121 3122 if (sscanf($1, "0x%8x%8x%8x%8x", 3123 &$$->key32[0], &$$->key32[1], 3124 &$$->key32[2], &$$->key32[3]) != 4) { 3125 free($$); 3126 free($1); 3127 yyerror("invalid hex key"); 3128 YYERROR; 3129 } 3130 } else { 3131 MD5_CTX context; 3132 3133 $$ = calloc(1, sizeof(struct pf_poolhashkey)); 3134 if ($$ == NULL) 3135 err(1, "hashkey: calloc"); 3136 MD5Init(&context); 3137 MD5Update(&context, (unsigned char *)$1, 3138 strlen($1)); 3139 MD5Final((unsigned char *)$$, &context); 3140 HTONL($$->key32[0]); 3141 HTONL($$->key32[1]); 3142 HTONL($$->key32[2]); 3143 HTONL($$->key32[3]); 3144 } 3145 free($1); 3146 } 3147 ; 3148 3149 pool_opts : { bzero(&pool_opts, sizeof pool_opts); } 3150 pool_opts_l 3151 { $$ = pool_opts; } 3152 | /* empty */ { 3153 bzero(&pool_opts, sizeof pool_opts); 3154 $$ = pool_opts; 3155 } 3156 ; 3157 3158 pool_opts_l : pool_opts_l pool_opt 3159 | pool_opt 3160 ; 3161 3162 pool_opt : BITMASK { 3163 if (pool_opts.type) { 3164 yyerror("pool type cannot be redefined"); 3165 YYERROR; 3166 } 3167 pool_opts.type = PF_POOL_BITMASK; 3168 } 3169 | RANDOM { 3170 if (pool_opts.type) { 3171 yyerror("pool type cannot be redefined"); 3172 YYERROR; 3173 } 3174 pool_opts.type = PF_POOL_RANDOM; 3175 } 3176 | SOURCEHASH hashkey { 3177 if (pool_opts.type) { 3178 yyerror("pool type cannot be redefined"); 3179 YYERROR; 3180 } 3181 pool_opts.type = PF_POOL_SRCHASH; 3182 pool_opts.key = $2; 3183 } 3184 | ROUNDROBIN { 3185 if (pool_opts.type) { 3186 yyerror("pool type cannot be redefined"); 3187 YYERROR; 3188 } 3189 pool_opts.type = PF_POOL_ROUNDROBIN; 3190 } 3191 | STATICPORT { 3192 if (pool_opts.staticport) { 3193 yyerror("static-port cannot be redefined"); 3194 YYERROR; 3195 } 3196 pool_opts.staticport = 1; 3197 } 3198 | STICKYADDRESS { 3199 if (filter_opts.marker & POM_STICKYADDRESS) { 3200 yyerror("sticky-address cannot be redefined"); 3201 YYERROR; 3202 } 3203 pool_opts.marker |= POM_STICKYADDRESS; 3204 pool_opts.opts |= PF_POOL_STICKYADDR; 3205 } 3206 ; 3207 3208 redirection : /* empty */ { $$ = NULL; } 3209 | ARROW host { 3210 $$ = calloc(1, sizeof(struct redirection)); 3211 if ($$ == NULL) 3212 err(1, "redirection: calloc"); 3213 $$->host = $2; 3214 $$->rport.a = $$->rport.b = $$->rport.t = 0; 3215 } 3216 | ARROW host PORT rport { 3217 $$ = calloc(1, sizeof(struct redirection)); 3218 if ($$ == NULL) 3219 err(1, "redirection: calloc"); 3220 $$->host = $2; 3221 $$->rport = $4; 3222 } 3223 ; 3224 3225 natpass : /* empty */ { $$ = 0; } 3226 | PASS { $$ = 1; } 3227 ; 3228 3229 nataction : no NAT natpass { 3230 $$.b2 = $$.w = 0; 3231 if ($1) 3232 $$.b1 = PF_NONAT; 3233 else 3234 $$.b1 = PF_NAT; 3235 $$.b2 = $3; 3236 } 3237 | no RDR natpass { 3238 $$.b2 = $$.w = 0; 3239 if ($1) 3240 $$.b1 = PF_NORDR; 3241 else 3242 $$.b1 = PF_RDR; 3243 $$.b2 = $3; 3244 } 3245 ; 3246 3247 natrule : nataction interface af proto fromto tag tagged redirpool pool_opts opt_statelock 3248 { 3249 struct pf_rule r; 3250 3251 if (check_rulestate(PFCTL_STATE_NAT)) 3252 YYERROR; 3253 3254 memset(&r, 0, sizeof(r)); 3255 3256 r.action = $1.b1; 3257 r.natpass = $1.b2; 3258 r.af = $3; 3259 3260 if (!r.af) { 3261 if ($5.src.host && $5.src.host->af && 3262 !$5.src.host->ifindex) 3263 r.af = $5.src.host->af; 3264 else if ($5.dst.host && $5.dst.host->af && 3265 !$5.dst.host->ifindex) 3266 r.af = $5.dst.host->af; 3267 } 3268 3269 if ($6 != NULL) 3270 if (strlcpy(r.tagname, $6, PF_TAG_NAME_SIZE) >= 3271 PF_TAG_NAME_SIZE) { 3272 yyerror("tag too long, max %u chars", 3273 PF_TAG_NAME_SIZE - 1); 3274 YYERROR; 3275 } 3276 3277 if ($7.name) 3278 if (strlcpy(r.match_tagname, $7.name, 3279 PF_TAG_NAME_SIZE) >= PF_TAG_NAME_SIZE) { 3280 yyerror("tag too long, max %u chars", 3281 PF_TAG_NAME_SIZE - 1); 3282 YYERROR; 3283 } 3284 r.match_tag_not = $7.neg; 3285 3286 if (r.action == PF_NONAT || r.action == PF_NORDR) { 3287 if ($8 != NULL) { 3288 yyerror("translation rule with 'no' " 3289 "does not need '->'"); 3290 YYERROR; 3291 } 3292 } else { 3293 if ($8 == NULL || $8->host == NULL) { 3294 yyerror("translation rule requires '-> " 3295 "address'"); 3296 YYERROR; 3297 } 3298 if (!r.af && ! $8->host->ifindex) 3299 r.af = $8->host->af; 3300 3301 remove_invalid_hosts(&$8->host, &r.af); 3302 if (invalid_redirect($8->host, r.af)) 3303 YYERROR; 3304 if (check_netmask($8->host, r.af)) 3305 YYERROR; 3306 3307 r.rpool.proxy_port[0] = ntohs($8->rport.a); 3308 3309 switch (r.action) { 3310 case PF_RDR: 3311 if (!$8->rport.b && $8->rport.t && 3312 $5.dst.port != NULL) { 3313 r.rpool.proxy_port[1] = 3314 ntohs($8->rport.a) + 3315 (ntohs( 3316 $5.dst.port->port[1]) - 3317 ntohs( 3318 $5.dst.port->port[0])); 3319 } else 3320 r.rpool.proxy_port[1] = 3321 ntohs($8->rport.b); 3322 break; 3323 case PF_NAT: 3324 r.rpool.proxy_port[1] = 3325 ntohs($8->rport.b); 3326 if (!r.rpool.proxy_port[0] && 3327 !r.rpool.proxy_port[1]) { 3328 r.rpool.proxy_port[0] = 3329 PF_NAT_PROXY_PORT_LOW; 3330 r.rpool.proxy_port[1] = 3331 PF_NAT_PROXY_PORT_HIGH; 3332 } else if (!r.rpool.proxy_port[1]) 3333 r.rpool.proxy_port[1] = 3334 r.rpool.proxy_port[0]; 3335 break; 3336 default: 3337 break; 3338 } 3339 3340 r.rpool.opts = $9.type; 3341 if ((r.rpool.opts & PF_POOL_TYPEMASK) == 3342 PF_POOL_NONE && ($8->host->next != NULL || 3343 $8->host->addr.type == PF_ADDR_TABLE || 3344 DYNIF_MULTIADDR($8->host->addr))) 3345 r.rpool.opts = PF_POOL_ROUNDROBIN; 3346 if ((r.rpool.opts & PF_POOL_TYPEMASK) != 3347 PF_POOL_ROUNDROBIN && 3348 disallow_table($8->host, "tables are only " 3349 "supported in round-robin redirection " 3350 "pools")) 3351 YYERROR; 3352 if ((r.rpool.opts & PF_POOL_TYPEMASK) != 3353 PF_POOL_ROUNDROBIN && 3354 disallow_alias($8->host, "interface (%s) " 3355 "is only supported in round-robin " 3356 "redirection pools")) 3357 YYERROR; 3358 if ($8->host->next != NULL) { 3359 if ((r.rpool.opts & PF_POOL_TYPEMASK) != 3360 PF_POOL_ROUNDROBIN) { 3361 yyerror("only round-robin " 3362 "valid for multiple " 3363 "redirection addresses"); 3364 YYERROR; 3365 } 3366 } 3367 } 3368 3369 if ($9.key != NULL) 3370 memcpy(&r.rpool.key, $9.key, 3371 sizeof(struct pf_poolhashkey)); 3372 3373 if ($9.opts) 3374 r.rpool.opts |= $9.opts; 3375 3376 if ($9.staticport) { 3377 if (r.action != PF_NAT) { 3378 yyerror("the 'static-port' option is " 3379 "only valid with nat rules"); 3380 YYERROR; 3381 } 3382 if (r.rpool.proxy_port[0] != 3383 PF_NAT_PROXY_PORT_LOW && 3384 r.rpool.proxy_port[1] != 3385 PF_NAT_PROXY_PORT_HIGH) { 3386 yyerror("the 'static-port' option can't" 3387 " be used when specifying a port" 3388 " range"); 3389 YYERROR; 3390 } 3391 r.rpool.proxy_port[0] = 0; 3392 r.rpool.proxy_port[1] = 0; 3393 } 3394 3395 if ($10 == NULL) 3396 r.rule_flag |= default_statelock; 3397 else { 3398 r.rule_flag |= $10->data.statelock; 3399 free($10); 3400 } 3401 3402 expand_rule(&r, $2, $8 == NULL ? NULL : $8->host, $4, 3403 $5.src_os, $5.src.host, $5.src.port, $5.dst.host, 3404 $5.dst.port, 0, 0, 0, ""); 3405 free($8); 3406 } 3407 ; 3408 3409 binatrule : no BINAT natpass interface af proto FROM host TO ipspec tag tagged 3410 redirection 3411 { 3412 struct pf_rule binat; 3413 struct pf_pooladdr *pa; 3414 3415 if (check_rulestate(PFCTL_STATE_NAT)) 3416 YYERROR; 3417 3418 memset(&binat, 0, sizeof(binat)); 3419 3420 if ($1) 3421 binat.action = PF_NOBINAT; 3422 else 3423 binat.action = PF_BINAT; 3424 binat.natpass = $3; 3425 binat.af = $5; 3426 if (!binat.af && $8 != NULL && $8->af) 3427 binat.af = $8->af; 3428 if (!binat.af && $10 != NULL && $10->af) 3429 binat.af = $10->af; 3430 3431 if (!binat.af && $13 != NULL && $13->host) 3432 binat.af = $13->host->af; 3433 if (!binat.af) { 3434 yyerror("address family (inet/inet6) " 3435 "undefined"); 3436 YYERROR; 3437 } 3438 3439 if ($4 != NULL) { 3440 memcpy(binat.ifname, $4->ifname, 3441 sizeof(binat.ifname)); 3442 binat.ifnot = $4->not; 3443 free($4); 3444 } 3445 3446 if ($11 != NULL) 3447 if (strlcpy(binat.tagname, $11, 3448 PF_TAG_NAME_SIZE) >= PF_TAG_NAME_SIZE) { 3449 yyerror("tag too long, max %u chars", 3450 PF_TAG_NAME_SIZE - 1); 3451 YYERROR; 3452 } 3453 if ($12.name) 3454 if (strlcpy(binat.match_tagname, $12.name, 3455 PF_TAG_NAME_SIZE) >= PF_TAG_NAME_SIZE) { 3456 yyerror("tag too long, max %u chars", 3457 PF_TAG_NAME_SIZE - 1); 3458 YYERROR; 3459 } 3460 binat.match_tag_not = $12.neg; 3461 3462 if ($6 != NULL) { 3463 binat.proto = $6->proto; 3464 free($6); 3465 } 3466 3467 if ($8 != NULL && disallow_table($8, "invalid use of " 3468 "table <%s> as the source address of a binat rule")) 3469 YYERROR; 3470 if ($8 != NULL && disallow_alias($8, "invalid use of " 3471 "interface (%s) as the source address of a binat " 3472 "rule")) 3473 YYERROR; 3474 if ($13 != NULL && $13->host != NULL && disallow_table( 3475 $13->host, "invalid use of table <%s> as the " 3476 "redirect address of a binat rule")) 3477 YYERROR; 3478 if ($13 != NULL && $13->host != NULL && disallow_alias( 3479 $13->host, "invalid use of interface (%s) as the " 3480 "redirect address of a binat rule")) 3481 YYERROR; 3482 3483 if ($8 != NULL) { 3484 if ($8->next) { 3485 yyerror("multiple binat ip addresses"); 3486 YYERROR; 3487 } 3488 if ($8->addr.type == PF_ADDR_DYNIFTL) 3489 $8->af = binat.af; 3490 if ($8->af != binat.af) { 3491 yyerror("binat ip versions must match"); 3492 YYERROR; 3493 } 3494 if (check_netmask($8, binat.af)) 3495 YYERROR; 3496 memcpy(&binat.src.addr, &$8->addr, 3497 sizeof(binat.src.addr)); 3498 free($8); 3499 } 3500 if ($10 != NULL) { 3501 if ($10->next) { 3502 yyerror("multiple binat ip addresses"); 3503 YYERROR; 3504 } 3505 if ($10->af != binat.af && $10->af) { 3506 yyerror("binat ip versions must match"); 3507 YYERROR; 3508 } 3509 if (check_netmask($10, binat.af)) 3510 YYERROR; 3511 memcpy(&binat.dst.addr, &$10->addr, 3512 sizeof(binat.dst.addr)); 3513 binat.dst.neg = $10->not; 3514 free($10); 3515 } 3516 3517 if (binat.action == PF_NOBINAT) { 3518 if ($13 != NULL) { 3519 yyerror("'no binat' rule does not need" 3520 " '->'"); 3521 YYERROR; 3522 } 3523 } else { 3524 if ($13 == NULL || $13->host == NULL) { 3525 yyerror("'binat' rule requires" 3526 " '-> address'"); 3527 YYERROR; 3528 } 3529 3530 remove_invalid_hosts(&$13->host, &binat.af); 3531 if (invalid_redirect($13->host, binat.af)) 3532 YYERROR; 3533 if ($13->host->next != NULL) { 3534 yyerror("binat rule must redirect to " 3535 "a single address"); 3536 YYERROR; 3537 } 3538 if (check_netmask($13->host, binat.af)) 3539 YYERROR; 3540 3541 if (!PF_AZERO(&binat.src.addr.v.a.mask, 3542 binat.af) && 3543 !PF_AEQ(&binat.src.addr.v.a.mask, 3544 &$13->host->addr.v.a.mask, binat.af)) { 3545 yyerror("'binat' source mask and " 3546 "redirect mask must be the same"); 3547 YYERROR; 3548 } 3549 3550 TAILQ_INIT(&binat.rpool.list); 3551 pa = calloc(1, sizeof(struct pf_pooladdr)); 3552 if (pa == NULL) 3553 err(1, "binat: calloc"); 3554 pa->addr = $13->host->addr; 3555 pa->ifname[0] = 0; 3556 TAILQ_INSERT_TAIL(&binat.rpool.list, 3557 pa, entries); 3558 3559 free($13); 3560 } 3561 3562 pfctl_add_rule(pf, &binat, ""); 3563 } 3564 ; 3565 3566 tag : /* empty */ { $$ = NULL; } 3567 | TAG STRING { $$ = $2; } 3568 ; 3569 3570 tagged : /* empty */ { $$.neg = 0; $$.name = NULL; } 3571 | not TAGGED string { $$.neg = $1; $$.name = $3; } 3572 ; 3573 3574 route_host : STRING { 3575 $$ = calloc(1, sizeof(struct node_host)); 3576 if ($$ == NULL) 3577 err(1, "route_host: calloc"); 3578 $$->ifname = $1; 3579 set_ipmask($$, 128); 3580 $$->next = NULL; 3581 $$->tail = $$; 3582 } 3583 | '(' STRING host ')' { 3584 $$ = $3; 3585 $$->ifname = $2; 3586 } 3587 ; 3588 3589 route_host_list : route_host { $$ = $1; } 3590 | route_host_list comma route_host { 3591 if ($1->af == 0) 3592 $1->af = $3->af; 3593 if ($1->af != $3->af) { 3594 yyerror("all pool addresses must be in the " 3595 "same address family"); 3596 YYERROR; 3597 } 3598 $1->tail->next = $3; 3599 $1->tail = $3->tail; 3600 $$ = $1; 3601 } 3602 ; 3603 3604 routespec : route_host { $$ = $1; } 3605 | '{' route_host_list '}' { $$ = $2; } 3606 ; 3607 3608 route : /* empty */ { 3609 $$.host = NULL; 3610 $$.rt = 0; 3611 $$.pool_opts = 0; 3612 } 3613 | FASTROUTE { 3614 $$.host = NULL; 3615 $$.rt = PF_FASTROUTE; 3616 $$.pool_opts = 0; 3617 } 3618 | ROUTETO routespec pool_opts { 3619 $$.host = $2; 3620 $$.rt = PF_ROUTETO; 3621 $$.pool_opts = $3.type | $3.opts; 3622 if ($3.key != NULL) 3623 $$.key = $3.key; 3624 } 3625 | REPLYTO routespec pool_opts { 3626 $$.host = $2; 3627 $$.rt = PF_REPLYTO; 3628 $$.pool_opts = $3.type | $3.opts; 3629 if ($3.key != NULL) 3630 $$.key = $3.key; 3631 } 3632 | DUPTO routespec pool_opts { 3633 $$.host = $2; 3634 $$.rt = PF_DUPTO; 3635 $$.pool_opts = $3.type | $3.opts; 3636 if ($3.key != NULL) 3637 $$.key = $3.key; 3638 } 3639 ; 3640 3641 timeout_spec : STRING number 3642 { 3643 if (check_rulestate(PFCTL_STATE_OPTION)) { 3644 free($1); 3645 YYERROR; 3646 } 3647 if (pfctl_set_timeout(pf, $1, $2, 0) != 0) { 3648 yyerror("unknown timeout %s", $1); 3649 free($1); 3650 YYERROR; 3651 } 3652 free($1); 3653 } 3654 ; 3655 3656 timeout_list : timeout_list comma timeout_spec 3657 | timeout_spec 3658 ; 3659 3660 limit_spec : STRING number 3661 { 3662 if (check_rulestate(PFCTL_STATE_OPTION)) { 3663 free($1); 3664 YYERROR; 3665 } 3666 if (pfctl_set_limit(pf, $1, $2) != 0) { 3667 yyerror("unable to set limit %s %u", $1, $2); 3668 free($1); 3669 YYERROR; 3670 } 3671 free($1); 3672 } 3673 ; 3674 3675 limit_list : limit_list comma limit_spec 3676 | limit_spec 3677 ; 3678 3679 comma : ',' 3680 | /* empty */ 3681 ; 3682 3683 yesno : NO { $$ = 0; } 3684 | STRING { 3685 if (!strcmp($1, "yes")) 3686 $$ = 1; 3687 else { 3688 yyerror("invalid value '%s', expected 'yes' " 3689 "or 'no'", $1); 3690 free($1); 3691 YYERROR; 3692 } 3693 free($1); 3694 } 3695 ; 3696 3697 unaryop : '=' { $$ = PF_OP_EQ; } 3698 | '!' '=' { $$ = PF_OP_NE; } 3699 | '<' '=' { $$ = PF_OP_LE; } 3700 | '<' { $$ = PF_OP_LT; } 3701 | '>' '=' { $$ = PF_OP_GE; } 3702 | '>' { $$ = PF_OP_GT; } 3703 ; 3704 3705 %% 3706 3707 int 3708 yyerror(const char *fmt, ...) 3709 { 3710 va_list ap; 3711 extern const char *infile; 3712 3713 errors = 1; 3714 va_start(ap, fmt); 3715 fprintf(stderr, "%s:%d: ", infile, yylval.lineno); 3716 vfprintf(stderr, fmt, ap); 3717 fprintf(stderr, "\n"); 3718 va_end(ap); 3719 return (0); 3720 } 3721 3722 int 3723 disallow_table(struct node_host *h, const char *fmt) 3724 { 3725 for (; h != NULL; h = h->next) 3726 if (h->addr.type == PF_ADDR_TABLE) { 3727 yyerror(fmt, h->addr.v.tblname); 3728 return (1); 3729 } 3730 return (0); 3731 } 3732 3733 int 3734 disallow_alias(struct node_host *h, const char *fmt) 3735 { 3736 for (; h != NULL; h = h->next) 3737 if (DYNIF_MULTIADDR(h->addr)) { 3738 yyerror(fmt, h->addr.v.tblname); 3739 return (1); 3740 } 3741 return (0); 3742 } 3743 3744 int 3745 rule_consistent(struct pf_rule *r) 3746 { 3747 int problems = 0; 3748 3749 switch (r->action) { 3750 case PF_PASS: 3751 case PF_DROP: 3752 case PF_SCRUB: 3753 case PF_NOSCRUB: 3754 problems = filter_consistent(r); 3755 break; 3756 case PF_NAT: 3757 case PF_NONAT: 3758 problems = nat_consistent(r); 3759 break; 3760 case PF_RDR: 3761 case PF_NORDR: 3762 problems = rdr_consistent(r); 3763 break; 3764 case PF_BINAT: 3765 case PF_NOBINAT: 3766 default: 3767 break; 3768 } 3769 return (problems); 3770 } 3771 3772 int 3773 filter_consistent(struct pf_rule *r) 3774 { 3775 int problems = 0; 3776 3777 if (r->proto != IPPROTO_TCP && r->proto != IPPROTO_UDP && 3778 (r->src.port_op || r->dst.port_op)) { 3779 yyerror("port only applies to tcp/udp"); 3780 problems++; 3781 } 3782 if (r->proto != IPPROTO_ICMP && r->proto != IPPROTO_ICMPV6 && 3783 (r->type || r->code)) { 3784 yyerror("icmp-type/code only applies to icmp"); 3785 problems++; 3786 } 3787 if (!r->af && (r->type || r->code)) { 3788 yyerror("must indicate address family with icmp-type/code"); 3789 problems++; 3790 } 3791 if (r->overload_tblname[0] && 3792 r->max_src_conn == 0 && r->max_src_conn_rate.seconds == 0) { 3793 yyerror("'overload' requires 'max-src-conn' " 3794 "or 'max-src-conn-rate'"); 3795 problems++; 3796 } 3797 if ((r->proto == IPPROTO_ICMP && r->af == AF_INET6) || 3798 (r->proto == IPPROTO_ICMPV6 && r->af == AF_INET)) { 3799 yyerror("proto %s doesn't match address family %s", 3800 r->proto == IPPROTO_ICMP ? "icmp" : "icmp6", 3801 r->af == AF_INET ? "inet" : "inet6"); 3802 problems++; 3803 } 3804 if (r->allow_opts && r->action != PF_PASS) { 3805 yyerror("allow-opts can only be specified for pass rules"); 3806 problems++; 3807 } 3808 if (r->rule_flag & PFRULE_FRAGMENT && (r->src.port_op || 3809 r->dst.port_op || r->flagset || r->type || r->code)) { 3810 yyerror("fragments can be filtered only on IP header fields"); 3811 problems++; 3812 } 3813 if (r->rule_flag & PFRULE_RETURNRST && r->proto != IPPROTO_TCP) { 3814 yyerror("return-rst can only be applied to TCP rules"); 3815 problems++; 3816 } 3817 if (r->max_src_nodes && !(r->rule_flag & PFRULE_RULESRCTRACK)) { 3818 yyerror("max-src-nodes requires 'source-track rule'"); 3819 problems++; 3820 } 3821 if (r->action == PF_DROP && r->keep_state) { 3822 yyerror("keep state on block rules doesn't make sense"); 3823 problems++; 3824 } 3825 if ((r->tagname[0] || r->match_tagname[0]) && !r->keep_state && 3826 r->action == PF_PASS) { 3827 yyerror("tags cannot be used without keep state"); 3828 problems++; 3829 } 3830 return (-problems); 3831 } 3832 3833 int 3834 nat_consistent(struct pf_rule *r) 3835 { 3836 return (0); /* yeah! */ 3837 } 3838 3839 int 3840 rdr_consistent(struct pf_rule *r) 3841 { 3842 int problems = 0; 3843 3844 if (r->proto != IPPROTO_TCP && r->proto != IPPROTO_UDP) { 3845 if (r->src.port_op) { 3846 yyerror("src port only applies to tcp/udp"); 3847 problems++; 3848 } 3849 if (r->dst.port_op) { 3850 yyerror("dst port only applies to tcp/udp"); 3851 problems++; 3852 } 3853 if (r->rpool.proxy_port[0]) { 3854 yyerror("rpool port only applies to tcp/udp"); 3855 problems++; 3856 } 3857 } 3858 if (r->dst.port_op && 3859 r->dst.port_op != PF_OP_EQ && r->dst.port_op != PF_OP_RRG) { 3860 yyerror("invalid port operator for rdr destination port"); 3861 problems++; 3862 } 3863 return (-problems); 3864 } 3865 3866 int 3867 process_tabledef(char *name, struct table_opts *opts) 3868 { 3869 struct pfr_buffer ab; 3870 struct node_tinit *ti; 3871 3872 bzero(&ab, sizeof(ab)); 3873 ab.pfrb_type = PFRB_ADDRS; 3874 SIMPLEQ_FOREACH(ti, &opts->init_nodes, entries) { 3875 if (ti->file) 3876 if (pfr_buf_load(&ab, ti->file, 0, append_addr)) { 3877 if (errno) 3878 yyerror("cannot load \"%s\": %s", 3879 ti->file, strerror(errno)); 3880 else 3881 yyerror("file \"%s\" contains bad data", 3882 ti->file); 3883 goto _error; 3884 } 3885 if (ti->host) 3886 if (append_addr_host(&ab, ti->host, 0, 0)) { 3887 yyerror("cannot create address buffer: %s", 3888 strerror(errno)); 3889 goto _error; 3890 } 3891 } 3892 if (pf->opts & PF_OPT_VERBOSE) 3893 print_tabledef(name, opts->flags, opts->init_addr, 3894 &opts->init_nodes); 3895 if (!(pf->opts & PF_OPT_NOACTION) && 3896 pfctl_define_table(name, opts->flags, opts->init_addr, 3897 pf->anchor, &ab, pf->tticket)) { 3898 yyerror("cannot define table %s: %s", name, 3899 pfr_strerror(errno)); 3900 goto _error; 3901 } 3902 pf->tdirty = 1; 3903 pfr_buf_clear(&ab); 3904 return (0); 3905 _error: 3906 pfr_buf_clear(&ab); 3907 return (-1); 3908 } 3909 3910 struct keywords { 3911 const char *k_name; 3912 int k_val; 3913 }; 3914 3915 /* macro gore, but you should've seen the prior indentation nightmare... */ 3916 3917 #define FREE_LIST(T,r) \ 3918 do { \ 3919 T *p, *node = r; \ 3920 while (node != NULL) { \ 3921 p = node; \ 3922 node = node->next; \ 3923 free(p); \ 3924 } \ 3925 } while (0) 3926 3927 #define LOOP_THROUGH(T,n,r,C) \ 3928 do { \ 3929 T *n; \ 3930 if (r == NULL) { \ 3931 r = calloc(1, sizeof(T)); \ 3932 if (r == NULL) \ 3933 err(1, "LOOP: calloc"); \ 3934 r->next = NULL; \ 3935 } \ 3936 n = r; \ 3937 while (n != NULL) { \ 3938 do { \ 3939 C; \ 3940 } while (0); \ 3941 n = n->next; \ 3942 } \ 3943 } while (0) 3944 3945 void 3946 expand_label_str(char *label, size_t len, const char *srch, const char *repl) 3947 { 3948 char *tmp; 3949 char *p, *q; 3950 3951 if ((tmp = calloc(1, len)) == NULL) 3952 err(1, "expand_label_str: calloc"); 3953 p = q = label; 3954 while ((q = strstr(p, srch)) != NULL) { 3955 *q = '\0'; 3956 if ((strlcat(tmp, p, len) >= len) || 3957 (strlcat(tmp, repl, len) >= len)) 3958 errx(1, "expand_label: label too long"); 3959 q += strlen(srch); 3960 p = q; 3961 } 3962 if (strlcat(tmp, p, len) >= len) 3963 errx(1, "expand_label: label too long"); 3964 strlcpy(label, tmp, len); /* always fits */ 3965 free(tmp); 3966 } 3967 3968 void 3969 expand_label_if(const char *name, char *label, size_t len, const char *ifname) 3970 { 3971 if (strstr(label, name) != NULL) { 3972 if (!*ifname) 3973 expand_label_str(label, len, name, "any"); 3974 else 3975 expand_label_str(label, len, name, ifname); 3976 } 3977 } 3978 3979 void 3980 expand_label_addr(const char *name, char *label, size_t len, sa_family_t af, 3981 struct node_host *h) 3982 { 3983 char tmp[64], tmp_not[66]; 3984 3985 if (strstr(label, name) != NULL) { 3986 switch (h->addr.type) { 3987 case PF_ADDR_DYNIFTL: 3988 snprintf(tmp, sizeof(tmp), "(%s)", h->addr.v.ifname); 3989 break; 3990 case PF_ADDR_TABLE: 3991 snprintf(tmp, sizeof(tmp), "<%s>", h->addr.v.tblname); 3992 break; 3993 case PF_ADDR_NOROUTE: 3994 snprintf(tmp, sizeof(tmp), "no-route"); 3995 break; 3996 case PF_ADDR_ADDRMASK: 3997 if (!af || (PF_AZERO(&h->addr.v.a.addr, af) && 3998 PF_AZERO(&h->addr.v.a.mask, af))) 3999 snprintf(tmp, sizeof(tmp), "any"); 4000 else { 4001 char a[48]; 4002 int bits; 4003 4004 if (inet_ntop(af, &h->addr.v.a.addr, a, 4005 sizeof(a)) == NULL) 4006 snprintf(tmp, sizeof(tmp), "?"); 4007 else { 4008 bits = unmask(&h->addr.v.a.mask, af); 4009 if ((af == AF_INET && bits < 32) || 4010 (af == AF_INET6 && bits < 128)) 4011 snprintf(tmp, sizeof(tmp), 4012 "%s/%d", a, bits); 4013 else 4014 snprintf(tmp, sizeof(tmp), 4015 "%s", a); 4016 } 4017 } 4018 break; 4019 default: 4020 snprintf(tmp, sizeof(tmp), "?"); 4021 break; 4022 } 4023 4024 if (h->not) { 4025 snprintf(tmp_not, sizeof(tmp_not), "! %s", tmp); 4026 expand_label_str(label, len, name, tmp_not); 4027 } else 4028 expand_label_str(label, len, name, tmp); 4029 } 4030 } 4031 4032 void 4033 expand_label_port(const char *name, char *label, size_t len, 4034 struct node_port *port) 4035 { 4036 char a1[6], a2[6], op[13] = ""; 4037 4038 if (strstr(label, name) != NULL) { 4039 snprintf(a1, sizeof(a1), "%u", ntohs(port->port[0])); 4040 snprintf(a2, sizeof(a2), "%u", ntohs(port->port[1])); 4041 if (!port->op) 4042 ; 4043 else if (port->op == PF_OP_IRG) 4044 snprintf(op, sizeof(op), "%s><%s", a1, a2); 4045 else if (port->op == PF_OP_XRG) 4046 snprintf(op, sizeof(op), "%s<>%s", a1, a2); 4047 else if (port->op == PF_OP_EQ) 4048 snprintf(op, sizeof(op), "%s", a1); 4049 else if (port->op == PF_OP_NE) 4050 snprintf(op, sizeof(op), "!=%s", a1); 4051 else if (port->op == PF_OP_LT) 4052 snprintf(op, sizeof(op), "<%s", a1); 4053 else if (port->op == PF_OP_LE) 4054 snprintf(op, sizeof(op), "<=%s", a1); 4055 else if (port->op == PF_OP_GT) 4056 snprintf(op, sizeof(op), ">%s", a1); 4057 else if (port->op == PF_OP_GE) 4058 snprintf(op, sizeof(op), ">=%s", a1); 4059 expand_label_str(label, len, name, op); 4060 } 4061 } 4062 4063 void 4064 expand_label_proto(const char *name, char *label, size_t len, u_int8_t proto) 4065 { 4066 struct protoent *pe; 4067 char n[4]; 4068 4069 if (strstr(label, name) != NULL) { 4070 pe = getprotobynumber(proto); 4071 if (pe != NULL) 4072 expand_label_str(label, len, name, pe->p_name); 4073 else { 4074 snprintf(n, sizeof(n), "%u", proto); 4075 expand_label_str(label, len, name, n); 4076 } 4077 } 4078 } 4079 4080 void 4081 expand_label_nr(const char *name, char *label, size_t len) 4082 { 4083 char n[11]; 4084 4085 if (strstr(label, name) != NULL) { 4086 snprintf(n, sizeof(n), "%u", pf->rule_nr); 4087 expand_label_str(label, len, name, n); 4088 } 4089 } 4090 4091 void 4092 expand_label(char *label, size_t len, const char *ifname, sa_family_t af, 4093 struct node_host *src_host, struct node_port *src_port, 4094 struct node_host *dst_host, struct node_port *dst_port, 4095 u_int8_t proto) 4096 { 4097 expand_label_if("$if", label, len, ifname); 4098 expand_label_addr("$srcaddr", label, len, af, src_host); 4099 expand_label_addr("$dstaddr", label, len, af, dst_host); 4100 expand_label_port("$srcport", label, len, src_port); 4101 expand_label_port("$dstport", label, len, dst_port); 4102 expand_label_proto("$proto", label, len, proto); 4103 expand_label_nr("$nr", label, len); 4104 } 4105 4106 int 4107 expand_altq(struct pf_altq *a, struct node_if *interfaces, 4108 struct node_queue *nqueues, struct node_queue_bw bwspec, 4109 struct node_queue_opt *opts) 4110 { 4111 struct pf_altq pa, pb; 4112 char qname[PF_QNAME_SIZE]; 4113 struct node_queue *n; 4114 struct node_queue_bw bw; 4115 int errs = 0; 4116 4117 if ((pf->loadopt & PFCTL_FLAG_ALTQ) == 0) { 4118 FREE_LIST(struct node_if, interfaces); 4119 FREE_LIST(struct node_queue, nqueues); 4120 return (0); 4121 } 4122 4123 LOOP_THROUGH(struct node_if, interface, interfaces, 4124 memcpy(&pa, a, sizeof(struct pf_altq)); 4125 if (strlcpy(pa.ifname, interface->ifname, 4126 sizeof(pa.ifname)) >= sizeof(pa.ifname)) 4127 errx(1, "expand_altq: strlcpy"); 4128 4129 if (interface->not) { 4130 yyerror("altq on ! <interface> is not supported"); 4131 errs++; 4132 } else { 4133 if (eval_pfaltq(pf, &pa, &bwspec, opts)) 4134 errs++; 4135 else 4136 if (pfctl_add_altq(pf, &pa)) 4137 errs++; 4138 4139 if (pf->opts & PF_OPT_VERBOSE) { 4140 print_altq(&pf->paltq->altq, 0, 4141 &bwspec, opts); 4142 if (nqueues && nqueues->tail) { 4143 printf("queue { "); 4144 LOOP_THROUGH(struct node_queue, queue, 4145 nqueues, 4146 printf("%s ", 4147 queue->queue); 4148 ); 4149 printf("}"); 4150 } 4151 printf("\n"); 4152 } 4153 4154 if (pa.scheduler == ALTQT_CBQ || 4155 pa.scheduler == ALTQT_HFSC) { 4156 /* now create a root queue */ 4157 memset(&pb, 0, sizeof(struct pf_altq)); 4158 if (strlcpy(qname, "root_", sizeof(qname)) >= 4159 sizeof(qname)) 4160 errx(1, "expand_altq: strlcpy"); 4161 if (strlcat(qname, interface->ifname, 4162 sizeof(qname)) >= sizeof(qname)) 4163 errx(1, "expand_altq: strlcat"); 4164 if (strlcpy(pb.qname, qname, 4165 sizeof(pb.qname)) >= sizeof(pb.qname)) 4166 errx(1, "expand_altq: strlcpy"); 4167 if (strlcpy(pb.ifname, interface->ifname, 4168 sizeof(pb.ifname)) >= sizeof(pb.ifname)) 4169 errx(1, "expand_altq: strlcpy"); 4170 pb.qlimit = pa.qlimit; 4171 pb.scheduler = pa.scheduler; 4172 bw.bw_absolute = pa.ifbandwidth; 4173 bw.bw_percent = 0; 4174 if (eval_pfqueue(pf, &pb, &bw, opts)) 4175 errs++; 4176 else 4177 if (pfctl_add_altq(pf, &pb)) 4178 errs++; 4179 } 4180 4181 LOOP_THROUGH(struct node_queue, queue, nqueues, 4182 n = calloc(1, sizeof(struct node_queue)); 4183 if (n == NULL) 4184 err(1, "expand_altq: calloc"); 4185 if (pa.scheduler == ALTQT_CBQ || 4186 pa.scheduler == ALTQT_HFSC) 4187 if (strlcpy(n->parent, qname, 4188 sizeof(n->parent)) >= 4189 sizeof(n->parent)) 4190 errx(1, "expand_altq: strlcpy"); 4191 if (strlcpy(n->queue, queue->queue, 4192 sizeof(n->queue)) >= sizeof(n->queue)) 4193 errx(1, "expand_altq: strlcpy"); 4194 if (strlcpy(n->ifname, interface->ifname, 4195 sizeof(n->ifname)) >= sizeof(n->ifname)) 4196 errx(1, "expand_altq: strlcpy"); 4197 n->scheduler = pa.scheduler; 4198 n->next = NULL; 4199 n->tail = n; 4200 if (queues == NULL) 4201 queues = n; 4202 else { 4203 queues->tail->next = n; 4204 queues->tail = n; 4205 } 4206 ); 4207 } 4208 ); 4209 FREE_LIST(struct node_if, interfaces); 4210 FREE_LIST(struct node_queue, nqueues); 4211 4212 return (errs); 4213 } 4214 4215 int 4216 expand_queue(struct pf_altq *a, struct node_if *interfaces, 4217 struct node_queue *nqueues, struct node_queue_bw bwspec, 4218 struct node_queue_opt *opts) 4219 { 4220 struct node_queue *n, *nq; 4221 struct pf_altq pa; 4222 u_int8_t found = 0; 4223 u_int8_t errs = 0; 4224 4225 if ((pf->loadopt & PFCTL_FLAG_ALTQ) == 0) { 4226 FREE_LIST(struct node_queue, nqueues); 4227 return (0); 4228 } 4229 4230 if (queues == NULL) { 4231 yyerror("queue %s has no parent", a->qname); 4232 FREE_LIST(struct node_queue, nqueues); 4233 return (1); 4234 } 4235 4236 LOOP_THROUGH(struct node_if, interface, interfaces, 4237 LOOP_THROUGH(struct node_queue, tqueue, queues, 4238 if (!strncmp(a->qname, tqueue->queue, PF_QNAME_SIZE) && 4239 (interface->ifname[0] == 0 || 4240 (!interface->not && !strncmp(interface->ifname, 4241 tqueue->ifname, IFNAMSIZ)) || 4242 (interface->not && strncmp(interface->ifname, 4243 tqueue->ifname, IFNAMSIZ)))) { 4244 /* found ourself in queues */ 4245 found++; 4246 4247 memcpy(&pa, a, sizeof(struct pf_altq)); 4248 4249 if (pa.scheduler != ALTQT_NONE && 4250 pa.scheduler != tqueue->scheduler) { 4251 yyerror("exactly one scheduler type " 4252 "per interface allowed"); 4253 errs++; 4254 goto out; 4255 } 4256 pa.scheduler = tqueue->scheduler; 4257 4258 /* scheduler dependent error checking */ 4259 switch (pa.scheduler) { 4260 case ALTQT_PRIQ: 4261 if (nqueues != NULL) { 4262 yyerror("priq queues cannot " 4263 "have child queues"); 4264 errs++; 4265 goto out; 4266 } 4267 if (bwspec.bw_absolute > 0 || 4268 bwspec.bw_percent < 100) { 4269 yyerror("priq doesn't take " 4270 "bandwidth"); 4271 errs++; 4272 goto out; 4273 } 4274 break; 4275 default: 4276 break; 4277 } 4278 4279 if (strlcpy(pa.ifname, tqueue->ifname, 4280 sizeof(pa.ifname)) >= sizeof(pa.ifname)) 4281 errx(1, "expand_queue: strlcpy"); 4282 if (strlcpy(pa.parent, tqueue->parent, 4283 sizeof(pa.parent)) >= sizeof(pa.parent)) 4284 errx(1, "expand_queue: strlcpy"); 4285 4286 if (eval_pfqueue(pf, &pa, &bwspec, opts)) 4287 errs++; 4288 else 4289 if (pfctl_add_altq(pf, &pa)) 4290 errs++; 4291 4292 for (nq = nqueues; nq != NULL; nq = nq->next) { 4293 if (!strcmp(a->qname, nq->queue)) { 4294 yyerror("queue cannot have " 4295 "itself as child"); 4296 errs++; 4297 continue; 4298 } 4299 n = calloc(1, 4300 sizeof(struct node_queue)); 4301 if (n == NULL) 4302 err(1, "expand_queue: calloc"); 4303 if (strlcpy(n->parent, a->qname, 4304 sizeof(n->parent)) >= 4305 sizeof(n->parent)) 4306 errx(1, "expand_queue strlcpy"); 4307 if (strlcpy(n->queue, nq->queue, 4308 sizeof(n->queue)) >= 4309 sizeof(n->queue)) 4310 errx(1, "expand_queue strlcpy"); 4311 if (strlcpy(n->ifname, tqueue->ifname, 4312 sizeof(n->ifname)) >= 4313 sizeof(n->ifname)) 4314 errx(1, "expand_queue strlcpy"); 4315 n->scheduler = tqueue->scheduler; 4316 n->next = NULL; 4317 n->tail = n; 4318 if (queues == NULL) 4319 queues = n; 4320 else { 4321 queues->tail->next = n; 4322 queues->tail = n; 4323 } 4324 } 4325 if ((pf->opts & PF_OPT_VERBOSE) && ( 4326 (found == 1 && interface->ifname[0] == 0) || 4327 (found > 0 && interface->ifname[0] != 0))) { 4328 print_queue(&pf->paltq->altq, 0, 4329 &bwspec, interface->ifname[0] != 0, 4330 opts); 4331 if (nqueues && nqueues->tail) { 4332 printf("{ "); 4333 LOOP_THROUGH(struct node_queue, 4334 queue, nqueues, 4335 printf("%s ", 4336 queue->queue); 4337 ); 4338 printf("}"); 4339 } 4340 printf("\n"); 4341 } 4342 } 4343 ); 4344 ); 4345 4346 out: 4347 FREE_LIST(struct node_queue, nqueues); 4348 FREE_LIST(struct node_if, interfaces); 4349 4350 if (!found) { 4351 yyerror("queue %s has no parent", a->qname); 4352 errs++; 4353 } 4354 4355 if (errs) 4356 return (1); 4357 else 4358 return (0); 4359 } 4360 4361 void 4362 expand_rule(struct pf_rule *r, 4363 struct node_if *interfaces, struct node_host *rpool_hosts, 4364 struct node_proto *protos, struct node_os *src_oses, 4365 struct node_host *src_hosts, struct node_port *src_ports, 4366 struct node_host *dst_hosts, struct node_port *dst_ports, 4367 struct node_uid *uids, struct node_gid *gids, struct node_icmp *icmp_types, 4368 const char *anchor_call) 4369 { 4370 sa_family_t af = r->af; 4371 int added = 0, error = 0; 4372 char ifname[IF_NAMESIZE]; 4373 char label[PF_RULE_LABEL_SIZE]; 4374 char tagname[PF_TAG_NAME_SIZE]; 4375 char match_tagname[PF_TAG_NAME_SIZE]; 4376 struct pf_pooladdr *pa; 4377 struct node_host *h; 4378 u_int8_t flags, flagset, keep_state; 4379 4380 if (strlcpy(label, r->label, sizeof(label)) >= sizeof(label)) 4381 errx(1, "expand_rule: strlcpy"); 4382 if (strlcpy(tagname, r->tagname, sizeof(tagname)) >= sizeof(tagname)) 4383 errx(1, "expand_rule: strlcpy"); 4384 if (strlcpy(match_tagname, r->match_tagname, sizeof(match_tagname)) >= 4385 sizeof(match_tagname)) 4386 errx(1, "expand_rule: strlcpy"); 4387 flags = r->flags; 4388 flagset = r->flagset; 4389 keep_state = r->keep_state; 4390 4391 LOOP_THROUGH(struct node_if, interface, interfaces, 4392 LOOP_THROUGH(struct node_proto, proto, protos, 4393 LOOP_THROUGH(struct node_icmp, icmp_type, icmp_types, 4394 LOOP_THROUGH(struct node_host, src_host, src_hosts, 4395 LOOP_THROUGH(struct node_port, src_port, src_ports, 4396 LOOP_THROUGH(struct node_os, src_os, src_oses, 4397 LOOP_THROUGH(struct node_host, dst_host, dst_hosts, 4398 LOOP_THROUGH(struct node_port, dst_port, dst_ports, 4399 LOOP_THROUGH(struct node_uid, uid, uids, 4400 LOOP_THROUGH(struct node_gid, gid, gids, 4401 4402 r->af = af; 4403 /* for link-local IPv6 address, interface must match up */ 4404 if ((r->af && src_host->af && r->af != src_host->af) || 4405 (r->af && dst_host->af && r->af != dst_host->af) || 4406 (src_host->af && dst_host->af && 4407 src_host->af != dst_host->af) || 4408 (src_host->ifindex && dst_host->ifindex && 4409 src_host->ifindex != dst_host->ifindex) || 4410 (src_host->ifindex && *interface->ifname && 4411 src_host->ifindex != if_nametoindex(interface->ifname)) || 4412 (dst_host->ifindex && *interface->ifname && 4413 dst_host->ifindex != if_nametoindex(interface->ifname))) 4414 continue; 4415 if (!r->af && src_host->af) 4416 r->af = src_host->af; 4417 else if (!r->af && dst_host->af) 4418 r->af = dst_host->af; 4419 4420 if (*interface->ifname) 4421 strlcpy(r->ifname, interface->ifname, 4422 sizeof(r->ifname)); 4423 else if (if_indextoname(src_host->ifindex, ifname)) 4424 strlcpy(r->ifname, ifname, sizeof(r->ifname)); 4425 else if (if_indextoname(dst_host->ifindex, ifname)) 4426 strlcpy(r->ifname, ifname, sizeof(r->ifname)); 4427 else 4428 memset(r->ifname, '\0', sizeof(r->ifname)); 4429 4430 if (strlcpy(r->label, label, sizeof(r->label)) >= 4431 sizeof(r->label)) 4432 errx(1, "expand_rule: strlcpy"); 4433 if (strlcpy(r->tagname, tagname, sizeof(r->tagname)) >= 4434 sizeof(r->tagname)) 4435 errx(1, "expand_rule: strlcpy"); 4436 if (strlcpy(r->match_tagname, match_tagname, 4437 sizeof(r->match_tagname)) >= sizeof(r->match_tagname)) 4438 errx(1, "expand_rule: strlcpy"); 4439 expand_label(r->label, PF_RULE_LABEL_SIZE, r->ifname, r->af, 4440 src_host, src_port, dst_host, dst_port, proto->proto); 4441 expand_label(r->tagname, PF_TAG_NAME_SIZE, r->ifname, r->af, 4442 src_host, src_port, dst_host, dst_port, proto->proto); 4443 expand_label(r->match_tagname, PF_TAG_NAME_SIZE, r->ifname, 4444 r->af, src_host, src_port, dst_host, dst_port, 4445 proto->proto); 4446 4447 error += check_netmask(src_host, r->af); 4448 error += check_netmask(dst_host, r->af); 4449 4450 r->ifnot = interface->not; 4451 r->proto = proto->proto; 4452 r->src.addr = src_host->addr; 4453 r->src.neg = src_host->not; 4454 r->src.port[0] = src_port->port[0]; 4455 r->src.port[1] = src_port->port[1]; 4456 r->src.port_op = src_port->op; 4457 r->dst.addr = dst_host->addr; 4458 r->dst.neg = dst_host->not; 4459 r->dst.port[0] = dst_port->port[0]; 4460 r->dst.port[1] = dst_port->port[1]; 4461 r->dst.port_op = dst_port->op; 4462 r->uid.op = uid->op; 4463 r->uid.uid[0] = uid->uid[0]; 4464 r->uid.uid[1] = uid->uid[1]; 4465 r->gid.op = gid->op; 4466 r->gid.gid[0] = gid->gid[0]; 4467 r->gid.gid[1] = gid->gid[1]; 4468 r->type = icmp_type->type; 4469 r->code = icmp_type->code; 4470 4471 if ((keep_state == PF_STATE_MODULATE || 4472 keep_state == PF_STATE_SYNPROXY) && 4473 r->proto && r->proto != IPPROTO_TCP) 4474 r->keep_state = PF_STATE_NORMAL; 4475 else 4476 r->keep_state = keep_state; 4477 4478 if (r->proto && r->proto != IPPROTO_TCP) { 4479 r->flags = 0; 4480 r->flagset = 0; 4481 } else { 4482 r->flags = flags; 4483 r->flagset = flagset; 4484 } 4485 if (icmp_type->proto && r->proto != icmp_type->proto) { 4486 yyerror("icmp-type mismatch"); 4487 error++; 4488 } 4489 4490 if (src_os && src_os->os) { 4491 r->os_fingerprint = pfctl_get_fingerprint(src_os->os); 4492 if ((pf->opts & PF_OPT_VERBOSE2) && 4493 r->os_fingerprint == PF_OSFP_NOMATCH) 4494 fprintf(stderr, 4495 "warning: unknown '%s' OS fingerprint\n", 4496 src_os->os); 4497 } else { 4498 r->os_fingerprint = PF_OSFP_ANY; 4499 } 4500 4501 TAILQ_INIT(&r->rpool.list); 4502 for (h = rpool_hosts; h != NULL; h = h->next) { 4503 pa = calloc(1, sizeof(struct pf_pooladdr)); 4504 if (pa == NULL) 4505 err(1, "expand_rule: calloc"); 4506 pa->addr = h->addr; 4507 if (h->ifname != NULL) { 4508 if (strlcpy(pa->ifname, h->ifname, 4509 sizeof(pa->ifname)) >= 4510 sizeof(pa->ifname)) 4511 errx(1, "expand_rule: strlcpy"); 4512 } else 4513 pa->ifname[0] = 0; 4514 TAILQ_INSERT_TAIL(&r->rpool.list, pa, entries); 4515 } 4516 4517 if (rule_consistent(r) < 0 || error) 4518 yyerror("skipping rule due to errors"); 4519 else { 4520 r->nr = pf->rule_nr++; 4521 pfctl_add_rule(pf, r, anchor_call); 4522 added++; 4523 } 4524 4525 )))))))))); 4526 4527 FREE_LIST(struct node_if, interfaces); 4528 FREE_LIST(struct node_proto, protos); 4529 FREE_LIST(struct node_host, src_hosts); 4530 FREE_LIST(struct node_port, src_ports); 4531 FREE_LIST(struct node_os, src_oses); 4532 FREE_LIST(struct node_host, dst_hosts); 4533 FREE_LIST(struct node_port, dst_ports); 4534 FREE_LIST(struct node_uid, uids); 4535 FREE_LIST(struct node_gid, gids); 4536 FREE_LIST(struct node_icmp, icmp_types); 4537 FREE_LIST(struct node_host, rpool_hosts); 4538 4539 if (!added) 4540 yyerror("rule expands to no valid combination"); 4541 } 4542 4543 int 4544 expand_skip_interface(struct node_if *interfaces) 4545 { 4546 int errs = 0; 4547 4548 if (!interfaces || (!interfaces->next && !interfaces->not && 4549 !strcmp(interfaces->ifname, "none"))) { 4550 if (pf->opts & PF_OPT_VERBOSE) 4551 printf("set skip on none\n"); 4552 errs = pfctl_set_interface_flags(pf, "", PFI_IFLAG_SKIP, 0); 4553 return (errs); 4554 } 4555 4556 if (pf->opts & PF_OPT_VERBOSE) 4557 printf("set skip on {"); 4558 LOOP_THROUGH(struct node_if, interface, interfaces, 4559 if (pf->opts & PF_OPT_VERBOSE) 4560 printf(" %s", interface->ifname); 4561 if (interface->not) { 4562 yyerror("skip on ! <interface> is not supported"); 4563 errs++; 4564 } else 4565 errs += pfctl_set_interface_flags(pf, 4566 interface->ifname, PFI_IFLAG_SKIP, 1); 4567 ); 4568 if (pf->opts & PF_OPT_VERBOSE) 4569 printf(" }\n"); 4570 4571 FREE_LIST(struct node_if, interfaces); 4572 4573 if (errs) 4574 return (1); 4575 else 4576 return (0); 4577 } 4578 4579 #undef FREE_LIST 4580 #undef LOOP_THROUGH 4581 4582 int 4583 check_rulestate(int desired_state) 4584 { 4585 if (require_order && (rulestate > desired_state)) { 4586 yyerror("Rules must be in order: options, normalization, " 4587 "queueing, translation, filtering"); 4588 return (1); 4589 } 4590 rulestate = desired_state; 4591 return (0); 4592 } 4593 4594 int 4595 kw_cmp(const void *k, const void *e) 4596 { 4597 return (strcmp(k, ((const struct keywords *)e)->k_name)); 4598 } 4599 4600 int 4601 lookup(char *s) 4602 { 4603 /* this has to be sorted always */ 4604 static const struct keywords keywords[] = { 4605 { "all", ALL}, 4606 { "allow-opts", ALLOWOPTS}, 4607 { "altq", ALTQ}, 4608 { "anchor", ANCHOR}, 4609 { "antispoof", ANTISPOOF}, 4610 { "any", ANY}, 4611 { "bandwidth", BANDWIDTH}, 4612 { "binat", BINAT}, 4613 { "binat-anchor", BINATANCHOR}, 4614 { "bitmask", BITMASK}, 4615 { "block", BLOCK}, 4616 { "block-policy", BLOCKPOLICY}, 4617 { "cbq", CBQ}, 4618 { "code", CODE}, 4619 { "crop", FRAGCROP}, 4620 { "debug", DEBUG}, 4621 { "drop", DROP}, 4622 { "drop-ovl", FRAGDROP}, 4623 { "dup-to", DUPTO}, 4624 { "fastroute", FASTROUTE}, 4625 { "file", FILENAME}, 4626 { "fingerprints", FINGERPRINTS}, 4627 { "flags", FLAGS}, 4628 { "floating", FLOATING}, 4629 { "flush", FLUSH}, 4630 { "for", FOR}, 4631 { "fragment", FRAGMENT}, 4632 { "from", FROM}, 4633 { "global", GLOBAL}, 4634 { "group", GROUP}, 4635 { "group-bound", GRBOUND}, 4636 { "hfsc", HFSC}, 4637 { "hostid", HOSTID}, 4638 { "icmp-type", ICMPTYPE}, 4639 { "icmp6-type", ICMP6TYPE}, 4640 { "if-bound", IFBOUND}, 4641 { "in", IN}, 4642 { "inet", INET}, 4643 { "inet6", INET6}, 4644 { "keep", KEEP}, 4645 { "label", LABEL}, 4646 { "limit", LIMIT}, 4647 { "linkshare", LINKSHARE}, 4648 { "load", LOAD}, 4649 { "log", LOG}, 4650 { "log-all", LOGALL}, 4651 { "loginterface", LOGINTERFACE}, 4652 { "max", MAXIMUM}, 4653 { "max-mss", MAXMSS}, 4654 { "max-src-conn", MAXSRCCONN}, 4655 { "max-src-conn-rate", MAXSRCCONNRATE}, 4656 { "max-src-nodes", MAXSRCNODES}, 4657 { "max-src-states", MAXSRCSTATES}, 4658 { "min-ttl", MINTTL}, 4659 { "modulate", MODULATE}, 4660 { "nat", NAT}, 4661 { "nat-anchor", NATANCHOR}, 4662 { "no", NO}, 4663 { "no-df", NODF}, 4664 { "no-route", NOROUTE}, 4665 { "no-sync", NOSYNC}, 4666 { "on", ON}, 4667 { "optimization", OPTIMIZATION}, 4668 { "os", OS}, 4669 { "out", OUT}, 4670 { "overload", OVERLOAD}, 4671 { "pass", PASS}, 4672 { "port", PORT}, 4673 { "priority", PRIORITY}, 4674 { "priq", PRIQ}, 4675 { "probability", PROBABILITY}, 4676 { "proto", PROTO}, 4677 { "qlimit", QLIMIT}, 4678 { "queue", QUEUE}, 4679 { "quick", QUICK}, 4680 { "random", RANDOM}, 4681 { "random-id", RANDOMID}, 4682 { "rdr", RDR}, 4683 { "rdr-anchor", RDRANCHOR}, 4684 { "realtime", REALTIME}, 4685 { "reassemble", REASSEMBLE}, 4686 { "reply-to", REPLYTO}, 4687 { "require-order", REQUIREORDER}, 4688 { "return", RETURN}, 4689 { "return-icmp", RETURNICMP}, 4690 { "return-icmp6", RETURNICMP6}, 4691 { "return-rst", RETURNRST}, 4692 { "round-robin", ROUNDROBIN}, 4693 { "route", ROUTE}, 4694 { "route-to", ROUTETO}, 4695 { "rule", RULE}, 4696 { "scrub", SCRUB}, 4697 { "set", SET}, 4698 { "skip", SKIP}, 4699 { "source-hash", SOURCEHASH}, 4700 { "source-track", SOURCETRACK}, 4701 { "state", STATE}, 4702 { "state-policy", STATEPOLICY}, 4703 { "static-port", STATICPORT}, 4704 { "sticky-address", STICKYADDRESS}, 4705 { "synproxy", SYNPROXY}, 4706 { "table", TABLE}, 4707 { "tag", TAG}, 4708 { "tagged", TAGGED}, 4709 { "tbrsize", TBRSIZE}, 4710 { "timeout", TIMEOUT}, 4711 { "to", TO}, 4712 { "tos", TOS}, 4713 { "ttl", TTL}, 4714 { "upperlimit", UPPERLIMIT}, 4715 { "user", USER}, 4716 }; 4717 const struct keywords *p; 4718 4719 p = bsearch(s, keywords, sizeof(keywords)/sizeof(keywords[0]), 4720 sizeof(keywords[0]), kw_cmp); 4721 4722 if (p) { 4723 if (debug > 1) 4724 fprintf(stderr, "%s: %d\n", s, p->k_val); 4725 return (p->k_val); 4726 } else { 4727 if (debug > 1) 4728 fprintf(stderr, "string: %s\n", s); 4729 return (STRING); 4730 } 4731 } 4732 4733 #define MAXPUSHBACK 128 4734 4735 char *parsebuf; 4736 int parseindex; 4737 char pushback_buffer[MAXPUSHBACK]; 4738 int pushback_index = 0; 4739 4740 int 4741 lgetc(FILE *f) 4742 { 4743 int c, next; 4744 4745 if (parsebuf) { 4746 /* Read character from the parsebuffer instead of input. */ 4747 if (parseindex >= 0) { 4748 c = parsebuf[parseindex++]; 4749 if (c != '\0') 4750 return (c); 4751 parsebuf = NULL; 4752 } else 4753 parseindex++; 4754 } 4755 4756 if (pushback_index) 4757 return (pushback_buffer[--pushback_index]); 4758 4759 while ((c = getc(f)) == '\\') { 4760 next = getc(f); 4761 if (next != '\n') { 4762 if (isspace(next)) 4763 yyerror("whitespace after \\"); 4764 ungetc(next, f); 4765 break; 4766 } 4767 yylval.lineno = lineno; 4768 lineno++; 4769 } 4770 if (c == '\t' || c == ' ') { 4771 /* Compress blanks to a single space. */ 4772 do { 4773 c = getc(f); 4774 } while (c == '\t' || c == ' '); 4775 ungetc(c, f); 4776 c = ' '; 4777 } 4778 4779 return (c); 4780 } 4781 4782 int 4783 lungetc(int c) 4784 { 4785 if (c == EOF) 4786 return (EOF); 4787 if (parsebuf) { 4788 parseindex--; 4789 if (parseindex >= 0) 4790 return (c); 4791 } 4792 if (pushback_index < MAXPUSHBACK-1) 4793 return (pushback_buffer[pushback_index++] = c); 4794 else 4795 return (EOF); 4796 } 4797 4798 int 4799 findeol(void) 4800 { 4801 int c; 4802 4803 parsebuf = NULL; 4804 pushback_index = 0; 4805 4806 /* skip to either EOF or the first real EOL */ 4807 while (1) { 4808 c = lgetc(fin); 4809 if (c == '\n') { 4810 lineno++; 4811 break; 4812 } 4813 if (c == EOF) 4814 break; 4815 } 4816 return (ERROR); 4817 } 4818 4819 int 4820 yylex(void) 4821 { 4822 char buf[8096]; 4823 char *p, *val; 4824 int endc, c, next; 4825 int token; 4826 4827 top: 4828 p = buf; 4829 while ((c = lgetc(fin)) == ' ') 4830 ; /* nothing */ 4831 4832 yylval.lineno = lineno; 4833 if (c == '#') 4834 while ((c = lgetc(fin)) != '\n' && c != EOF) 4835 ; /* nothing */ 4836 if (c == '$' && parsebuf == NULL) { 4837 while (1) { 4838 if ((c = lgetc(fin)) == EOF) 4839 return (0); 4840 4841 if (p + 1 >= buf + sizeof(buf) - 1) { 4842 yyerror("string too long"); 4843 return (findeol()); 4844 } 4845 if (isalnum(c) || c == '_') { 4846 *p++ = (char)c; 4847 continue; 4848 } 4849 *p = '\0'; 4850 lungetc(c); 4851 break; 4852 } 4853 val = symget(buf); 4854 if (val == NULL) { 4855 yyerror("macro '%s' not defined", buf); 4856 return (findeol()); 4857 } 4858 parsebuf = val; 4859 parseindex = 0; 4860 goto top; 4861 } 4862 4863 switch (c) { 4864 case '\'': 4865 case '"': 4866 endc = c; 4867 while (1) { 4868 if ((c = lgetc(fin)) == EOF) 4869 return (0); 4870 if (c == endc) { 4871 *p = '\0'; 4872 break; 4873 } 4874 if (c == '\n') { 4875 lineno++; 4876 continue; 4877 } 4878 if (p + 1 >= buf + sizeof(buf) - 1) { 4879 yyerror("string too long"); 4880 return (findeol()); 4881 } 4882 *p++ = (char)c; 4883 } 4884 yylval.v.string = strdup(buf); 4885 if (yylval.v.string == NULL) 4886 err(1, "yylex: strdup"); 4887 return (STRING); 4888 case '<': 4889 next = lgetc(fin); 4890 if (next == '>') { 4891 yylval.v.i = PF_OP_XRG; 4892 return (PORTBINARY); 4893 } 4894 lungetc(next); 4895 break; 4896 case '>': 4897 next = lgetc(fin); 4898 if (next == '<') { 4899 yylval.v.i = PF_OP_IRG; 4900 return (PORTBINARY); 4901 } 4902 lungetc(next); 4903 break; 4904 case '-': 4905 next = lgetc(fin); 4906 if (next == '>') 4907 return (ARROW); 4908 lungetc(next); 4909 break; 4910 } 4911 4912 #define allowed_in_string(x) \ 4913 (isalnum(x) || (ispunct(x) && x != '(' && x != ')' && \ 4914 x != '{' && x != '}' && x != '<' && x != '>' && \ 4915 x != '!' && x != '=' && x != '/' && x != '#' && \ 4916 x != ',')) 4917 4918 if (isalnum(c) || c == ':' || c == '_') { 4919 do { 4920 *p++ = c; 4921 if ((unsigned)(p-buf) >= sizeof(buf)) { 4922 yyerror("string too long"); 4923 return (findeol()); 4924 } 4925 } while ((c = lgetc(fin)) != EOF && (allowed_in_string(c))); 4926 lungetc(c); 4927 *p = '\0'; 4928 if ((token = lookup(buf)) == STRING) 4929 if ((yylval.v.string = strdup(buf)) == NULL) 4930 err(1, "yylex: strdup"); 4931 return (token); 4932 } 4933 if (c == '\n') { 4934 yylval.lineno = lineno; 4935 lineno++; 4936 } 4937 if (c == EOF) 4938 return (0); 4939 return (c); 4940 } 4941 4942 int 4943 parse_rules(FILE *input, struct pfctl *xpf) 4944 { 4945 struct sym *sym, *next; 4946 4947 fin = input; 4948 pf = xpf; 4949 lineno = 1; 4950 errors = 0; 4951 rulestate = PFCTL_STATE_NONE; 4952 returnicmpdefault = (ICMP_UNREACH << 8) | ICMP_UNREACH_PORT; 4953 returnicmp6default = 4954 (ICMP6_DST_UNREACH << 8) | ICMP6_DST_UNREACH_NOPORT; 4955 blockpolicy = PFRULE_DROP; 4956 require_order = 1; 4957 4958 yyparse(); 4959 4960 /* Free macros and check which have not been used. */ 4961 for (sym = TAILQ_FIRST(&symhead); sym != NULL; sym = next) { 4962 next = TAILQ_NEXT(sym, entries); 4963 if ((pf->opts & PF_OPT_VERBOSE2) && !sym->used) 4964 fprintf(stderr, "warning: macro '%s' not " 4965 "used\n", sym->nam); 4966 free(sym->nam); 4967 free(sym->val); 4968 TAILQ_REMOVE(&symhead, sym, entries); 4969 free(sym); 4970 } 4971 4972 return (errors ? -1 : 0); 4973 } 4974 4975 /* 4976 * Over-designed efficiency is a French and German concept, so how about 4977 * we wait until they discover this ugliness and make it all fancy. 4978 */ 4979 int 4980 symset(const char *nam, const char *val, int persist) 4981 { 4982 struct sym *sym; 4983 4984 for (sym = TAILQ_FIRST(&symhead); sym && strcmp(nam, sym->nam); 4985 sym = TAILQ_NEXT(sym, entries)) 4986 ; /* nothing */ 4987 4988 if (sym != NULL) { 4989 if (sym->persist == 1) 4990 return (0); 4991 else { 4992 free(sym->nam); 4993 free(sym->val); 4994 TAILQ_REMOVE(&symhead, sym, entries); 4995 free(sym); 4996 } 4997 } 4998 if ((sym = calloc(1, sizeof(*sym))) == NULL) 4999 return (-1); 5000 5001 sym->nam = strdup(nam); 5002 if (sym->nam == NULL) { 5003 free(sym); 5004 return (-1); 5005 } 5006 sym->val = strdup(val); 5007 if (sym->val == NULL) { 5008 free(sym->nam); 5009 free(sym); 5010 return (-1); 5011 } 5012 sym->used = 0; 5013 sym->persist = persist; 5014 TAILQ_INSERT_TAIL(&symhead, sym, entries); 5015 return (0); 5016 } 5017 5018 int 5019 pfctl_cmdline_symset(char *s) 5020 { 5021 char *sym, *val; 5022 int ret; 5023 5024 if ((val = strrchr(s, '=')) == NULL) 5025 return (-1); 5026 5027 if ((sym = malloc(strlen(s) - strlen(val) + 1)) == NULL) 5028 err(1, "pfctl_cmdline_symset: malloc"); 5029 5030 strlcpy(sym, s, strlen(s) - strlen(val) + 1); 5031 5032 ret = symset(sym, val + 1, 1); 5033 free(sym); 5034 5035 return (ret); 5036 } 5037 5038 char * 5039 symget(const char *nam) 5040 { 5041 struct sym *sym; 5042 5043 TAILQ_FOREACH(sym, &symhead, entries) 5044 if (strcmp(nam, sym->nam) == 0) { 5045 sym->used = 1; 5046 return (sym->val); 5047 } 5048 return (NULL); 5049 } 5050 5051 void 5052 decide_address_family(struct node_host *n, sa_family_t *af) 5053 { 5054 sa_family_t target_af = 0; 5055 5056 while (!*af && n != NULL) { 5057 if (n->af) { 5058 if (target_af == 0) 5059 target_af = n->af; 5060 if (target_af != n->af) 5061 return; 5062 } 5063 n = n->next; 5064 } 5065 if (!*af && target_af) 5066 *af = target_af; 5067 } 5068 5069 void 5070 remove_invalid_hosts(struct node_host **nh, sa_family_t *af) 5071 { 5072 struct node_host *n = *nh, *prev = NULL; 5073 5074 while (n != NULL) { 5075 if (*af && n->af && n->af != *af) { 5076 /* unlink and free n */ 5077 struct node_host *next = n->next; 5078 5079 /* adjust tail pointer */ 5080 if (n == (*nh)->tail) 5081 (*nh)->tail = prev; 5082 /* adjust previous node's next pointer */ 5083 if (prev == NULL) 5084 *nh = next; 5085 else 5086 prev->next = next; 5087 /* free node */ 5088 if (n->ifname != NULL) 5089 free(n->ifname); 5090 free(n); 5091 n = next; 5092 } else { 5093 if (n->af && !*af) 5094 *af = n->af; 5095 prev = n; 5096 n = n->next; 5097 } 5098 } 5099 } 5100 5101 int 5102 invalid_redirect(struct node_host *nh, sa_family_t af) 5103 { 5104 if (!af) { 5105 struct node_host *n; 5106 5107 /* tables and dyniftl are ok without an address family */ 5108 for (n = nh; n != NULL; n = n->next) { 5109 if (n->addr.type != PF_ADDR_TABLE && 5110 n->addr.type != PF_ADDR_DYNIFTL) { 5111 yyerror("address family not given and " 5112 "translation address expands to multiple " 5113 "address families"); 5114 return (1); 5115 } 5116 } 5117 } 5118 if (nh == NULL) { 5119 yyerror("no translation address with matching address family " 5120 "found."); 5121 return (1); 5122 } 5123 return (0); 5124 } 5125 5126 int 5127 atoul(char *s, u_long *ulvalp) 5128 { 5129 u_long ulval; 5130 char *ep; 5131 5132 errno = 0; 5133 ulval = strtoul(s, &ep, 0); 5134 if (s[0] == '\0' || *ep != '\0') 5135 return (-1); 5136 if (errno == ERANGE && ulval == ULONG_MAX) 5137 return (-1); 5138 *ulvalp = ulval; 5139 return (0); 5140 } 5141 5142 int 5143 getservice(char *n) 5144 { 5145 struct servent *s; 5146 u_long ulval; 5147 5148 if (atoul(n, &ulval) == 0) { 5149 if (ulval > 65535) { 5150 yyerror("illegal port value %lu", ulval); 5151 return (-1); 5152 } 5153 return (htons(ulval)); 5154 } else { 5155 s = getservbyname(n, "tcp"); 5156 if (s == NULL) 5157 s = getservbyname(n, "udp"); 5158 if (s == NULL) { 5159 yyerror("unknown port %s", n); 5160 return (-1); 5161 } 5162 return (s->s_port); 5163 } 5164 } 5165 5166 int 5167 rule_label(struct pf_rule *r, char *s) 5168 { 5169 if (s) { 5170 if (strlcpy(r->label, s, sizeof(r->label)) >= 5171 sizeof(r->label)) { 5172 yyerror("rule label too long (max %d chars)", 5173 sizeof(r->label)-1); 5174 return (-1); 5175 } 5176 } 5177 return (0); 5178 } 5179 5180 u_int16_t 5181 parseicmpspec(char *w, sa_family_t af) 5182 { 5183 const struct icmpcodeent *p; 5184 u_long ulval; 5185 u_int8_t icmptype; 5186 5187 if (af == AF_INET) 5188 icmptype = returnicmpdefault >> 8; 5189 else 5190 icmptype = returnicmp6default >> 8; 5191 5192 if (atoul(w, &ulval) == -1) { 5193 if ((p = geticmpcodebyname(icmptype, w, af)) == NULL) { 5194 yyerror("unknown icmp code %s", w); 5195 return (0); 5196 } 5197 ulval = p->code; 5198 } 5199 if (ulval > 255) { 5200 yyerror("invalid icmp code %lu", ulval); 5201 return (0); 5202 } 5203 return (icmptype << 8 | ulval); 5204 } 5205 5206 int 5207 pfctl_load_anchors(int dev, int opts, struct pfr_buffer *trans) 5208 { 5209 struct loadanchors *la; 5210 5211 TAILQ_FOREACH(la, &loadanchorshead, entries) { 5212 if (opts & PF_OPT_VERBOSE) 5213 fprintf(stderr, "\nLoading anchor %s from %s\n", 5214 la->anchorname, la->filename); 5215 if (pfctl_rules(dev, la->filename, opts, la->anchorname, 5216 trans) == -1) 5217 return (-1); 5218 } 5219 5220 return (0); 5221 } 5222 5223
Indexes created Tue Sep 30 20:09:53 GMT 2025