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