pf_ioctl.c revision 1.46.8.2
1 /* $NetBSD: pf_ioctl.c,v 1.46.8.2 2017/12/03 11:37:37 jdolecek Exp $ */ 2 /* $OpenBSD: pf_ioctl.c,v 1.182 2007/06/24 11:17:13 mcbride Exp $ */ 3 4 /* 5 * Copyright (c) 2001 Daniel Hartmeier 6 * Copyright (c) 2002,2003 Henning Brauer 7 * All rights reserved. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 13 * - Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * - Redistributions in binary form must reproduce the above 16 * copyright notice, this list of conditions and the following 17 * disclaimer in the documentation and/or other materials provided 18 * with the distribution. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 21 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 22 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 23 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE 24 * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 25 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 26 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 27 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER 28 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN 30 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 31 * POSSIBILITY OF SUCH DAMAGE. 32 * 33 * Effort sponsored in part by the Defense Advanced Research Projects 34 * Agency (DARPA) and Air Force Research Laboratory, Air Force 35 * Materiel Command, USAF, under agreement number F30602-01-2-0537. 36 * 37 */ 38 39 #include <sys/cdefs.h> 40 __KERNEL_RCSID(0, "$NetBSD: pf_ioctl.c,v 1.46.8.2 2017/12/03 11:37:37 jdolecek Exp $"); 41 42 #ifdef _KERNEL_OPT 43 #include "opt_inet.h" 44 #endif 45 46 #include "pfsync.h" 47 48 #include <sys/param.h> 49 #include <sys/systm.h> 50 #include <sys/mbuf.h> 51 #include <sys/filio.h> 52 #include <sys/fcntl.h> 53 #include <sys/socket.h> 54 #include <sys/socketvar.h> 55 #include <sys/kernel.h> 56 #include <sys/time.h> 57 #include <sys/pool.h> 58 #include <sys/proc.h> 59 #include <sys/malloc.h> 60 #include <sys/kthread.h> 61 #include <sys/rwlock.h> 62 #include <uvm/uvm_extern.h> 63 #ifdef __NetBSD__ 64 #include <sys/conf.h> 65 #include <sys/lwp.h> 66 #include <sys/kauth.h> 67 #include <sys/module.h> 68 #include <sys/cprng.h> 69 #include <sys/device.h> 70 #endif /* __NetBSD__ */ 71 72 #include <net/if.h> 73 #include <net/if_types.h> 74 #include <net/route.h> 75 76 #include <netinet/in.h> 77 #include <netinet/in_var.h> 78 #include <netinet/in_systm.h> 79 #include <netinet/ip.h> 80 #include <netinet/ip_var.h> 81 #include <netinet/ip_icmp.h> 82 83 #ifndef __NetBSD__ 84 #include <dev/rndvar.h> 85 #include <crypto/md5.h> 86 #else 87 #include <sys/md5.h> 88 #endif /* __NetBSD__ */ 89 #include <net/pfvar.h> 90 91 #if NPFSYNC > 0 92 #include <net/if_pfsync.h> 93 #endif /* NPFSYNC > 0 */ 94 95 #if NPFLOG > 0 96 #include <net/if_pflog.h> 97 #endif /* NPFLOG > 0 */ 98 99 #ifdef INET6 100 #include <netinet/ip6.h> 101 #include <netinet/in_pcb.h> 102 #endif /* INET6 */ 103 104 #ifdef ALTQ 105 #include <altq/altq.h> 106 #endif 107 108 #include "ioconf.h" 109 110 #ifdef _MODULE 111 void pfdetach(void); 112 #endif /* _MODULE */ 113 #ifndef __NetBSD__ 114 void pf_thread_create(void *); 115 #endif /* !__NetBSD__ */ 116 int pfopen(dev_t, int, int, struct lwp *); 117 int pfclose(dev_t, int, int, struct lwp *); 118 struct pf_pool *pf_get_pool(char *, u_int32_t, u_int8_t, u_int32_t, 119 u_int8_t, u_int8_t, u_int8_t); 120 121 void pf_mv_pool(struct pf_palist *, struct pf_palist *); 122 void pf_empty_pool(struct pf_palist *); 123 int pfioctl(dev_t, u_long, void *, int, struct lwp *); 124 #ifdef ALTQ 125 int pf_begin_altq(u_int32_t *); 126 int pf_rollback_altq(u_int32_t); 127 int pf_commit_altq(u_int32_t); 128 int pf_enable_altq(struct pf_altq *); 129 int pf_disable_altq(struct pf_altq *); 130 #endif /* ALTQ */ 131 int pf_begin_rules(u_int32_t *, int, const char *); 132 int pf_rollback_rules(u_int32_t, int, char *); 133 int pf_setup_pfsync_matching(struct pf_ruleset *); 134 void pf_hash_rule(MD5_CTX *, struct pf_rule *); 135 void pf_hash_rule_addr(MD5_CTX *, struct pf_rule_addr *); 136 int pf_commit_rules(u_int32_t, int, char *); 137 void pf_state_export(struct pfsync_state *, 138 struct pf_state_key *, struct pf_state *); 139 void pf_state_import(struct pfsync_state *, 140 struct pf_state_key *, struct pf_state *); 141 142 static int pf_state_add(struct pfsync_state*); 143 144 struct pf_rule pf_default_rule; 145 #ifdef __NetBSD__ 146 krwlock_t pf_consistency_lock; 147 #else 148 struct rwlock pf_consistency_lock = RWLOCK_INITIALIZER("pfcnslk"); 149 #endif /* __NetBSD__ */ 150 #ifdef ALTQ 151 static int pf_altq_running; 152 #endif 153 154 int pf_state_lock = 0; 155 156 #define TAGID_MAX 50000 157 TAILQ_HEAD(pf_tags, pf_tagname) pf_tags = TAILQ_HEAD_INITIALIZER(pf_tags), 158 pf_qids = TAILQ_HEAD_INITIALIZER(pf_qids); 159 160 #if (PF_QNAME_SIZE != PF_TAG_NAME_SIZE) 161 #error PF_QNAME_SIZE must be equal to PF_TAG_NAME_SIZE 162 #endif 163 u_int16_t tagname2tag(struct pf_tags *, char *); 164 void tag2tagname(struct pf_tags *, u_int16_t, char *); 165 void tag_unref(struct pf_tags *, u_int16_t); 166 int pf_rtlabel_add(struct pf_addr_wrap *); 167 void pf_rtlabel_remove(struct pf_addr_wrap *); 168 void pf_rtlabel_copyout(struct pf_addr_wrap *); 169 170 #ifdef __NetBSD__ 171 void pf_deferred_init(device_t); 172 #endif 173 174 #define DPFPRINTF(n, x) if (pf_status.debug >= (n)) printf x 175 176 #ifdef __NetBSD__ 177 const struct cdevsw pf_cdevsw = { 178 .d_open = pfopen, 179 .d_close = pfclose, 180 .d_read = noread, 181 .d_write = nowrite, 182 .d_ioctl = pfioctl, 183 .d_stop = nostop, 184 .d_tty = notty, 185 .d_poll = nopoll, 186 .d_mmap = nommap, 187 .d_kqfilter = nokqfilter, 188 .d_discard = nodiscard, 189 .d_flag = D_OTHER 190 }; 191 192 static int pfil4_wrapper(void *, struct mbuf **, struct ifnet *, int); 193 #ifdef INET6 194 static int pfil6_wrapper(void *, struct mbuf **, struct ifnet *, int); 195 #endif /* INET6 */ 196 197 static int pf_pfil_attach(void); 198 static int pf_pfil_detach(void); 199 200 static int pf_pfil_attached; 201 202 static kauth_listener_t pf_listener; 203 #endif /* __NetBSD__ */ 204 205 #ifdef __NetBSD__ 206 static int 207 pf_listener_cb(kauth_cred_t cred, kauth_action_t action, void *cookie, 208 void *arg0, void *arg1, void *arg2, void *arg3) 209 { 210 int result; 211 enum kauth_network_req req; 212 213 result = KAUTH_RESULT_DEFER; 214 req = (enum kauth_network_req)arg0; 215 216 if (action != KAUTH_NETWORK_FIREWALL) 217 return result; 218 219 /* These must have came from device context. */ 220 if ((req == KAUTH_REQ_NETWORK_FIREWALL_FW) || 221 (req == KAUTH_REQ_NETWORK_FIREWALL_NAT)) 222 result = KAUTH_RESULT_ALLOW; 223 224 return result; 225 } 226 #endif /* __NetBSD__ */ 227 228 void 229 pfattach(int num) 230 { 231 u_int32_t *timeout = pf_default_rule.timeout; 232 233 #ifdef __NetBSD__ 234 pool_init(&pf_rule_pl, sizeof(struct pf_rule), 0, 0, 0, "pfrulepl", 235 &pool_allocator_nointr, IPL_NONE); 236 pool_init(&pf_src_tree_pl, sizeof(struct pf_src_node), 0, 0, 0, 237 "pfsrctrpl", NULL, IPL_SOFTNET); 238 pool_init(&pf_state_pl, sizeof(struct pf_state), 0, 0, 0, "pfstatepl", 239 NULL, IPL_SOFTNET); 240 pool_init(&pf_state_key_pl, sizeof(struct pf_state_key), 0, 0, 0, 241 "pfstatekeypl", NULL, IPL_SOFTNET); 242 pool_init(&pf_altq_pl, sizeof(struct pf_altq), 0, 0, 0, "pfaltqpl", 243 &pool_allocator_nointr, IPL_NONE); 244 pool_init(&pf_pooladdr_pl, sizeof(struct pf_pooladdr), 0, 0, 0, 245 "pfpooladdrpl", &pool_allocator_nointr, IPL_NONE); 246 #else 247 pool_init(&pf_rule_pl, sizeof(struct pf_rule), 0, 0, 0, "pfrulepl", 248 &pool_allocator_nointr); 249 pool_init(&pf_src_tree_pl, sizeof(struct pf_src_node), 0, 0, 0, 250 "pfsrctrpl", NULL); 251 pool_init(&pf_state_pl, sizeof(struct pf_state), 0, 0, 0, "pfstatepl", 252 NULL); 253 pool_init(&pf_state_key_pl, sizeof(struct pf_state_key), 0, 0, 0, 254 "pfstatekeypl", NULL); 255 pool_init(&pf_altq_pl, sizeof(struct pf_altq), 0, 0, 0, "pfaltqpl", 256 &pool_allocator_nointr); 257 pool_init(&pf_pooladdr_pl, sizeof(struct pf_pooladdr), 0, 0, 0, 258 "pfpooladdrpl", &pool_allocator_nointr); 259 #endif /* !__NetBSD__ */ 260 261 pfr_initialize(); 262 pfi_initialize(); 263 pf_osfp_initialize(); 264 265 pool_sethardlimit(pf_pool_limits[PF_LIMIT_STATES].pp, 266 pf_pool_limits[PF_LIMIT_STATES].limit, NULL, 0); 267 268 if (ctob(physmem) <= 100*1024*1024) 269 pf_pool_limits[PF_LIMIT_TABLE_ENTRIES].limit = 270 PFR_KENTRY_HIWAT_SMALL; 271 272 RB_INIT(&tree_src_tracking); 273 RB_INIT(&pf_anchors); 274 pf_init_ruleset(&pf_main_ruleset); 275 TAILQ_INIT(&pf_altqs[0]); 276 TAILQ_INIT(&pf_altqs[1]); 277 TAILQ_INIT(&pf_pabuf); 278 pf_altqs_active = &pf_altqs[0]; 279 pf_altqs_inactive = &pf_altqs[1]; 280 TAILQ_INIT(&state_list); 281 282 #ifdef __NetBSD__ 283 rw_init(&pf_consistency_lock); 284 #endif /* __NetBSD__ */ 285 286 /* default rule should never be garbage collected */ 287 pf_default_rule.entries.tqe_prev = &pf_default_rule.entries.tqe_next; 288 pf_default_rule.action = PF_PASS; 289 pf_default_rule.nr = -1; 290 pf_default_rule.rtableid = -1; 291 292 /* initialize default timeouts */ 293 timeout[PFTM_TCP_FIRST_PACKET] = PFTM_TCP_FIRST_PACKET_VAL; 294 timeout[PFTM_TCP_OPENING] = PFTM_TCP_OPENING_VAL; 295 timeout[PFTM_TCP_ESTABLISHED] = PFTM_TCP_ESTABLISHED_VAL; 296 timeout[PFTM_TCP_CLOSING] = PFTM_TCP_CLOSING_VAL; 297 timeout[PFTM_TCP_FIN_WAIT] = PFTM_TCP_FIN_WAIT_VAL; 298 timeout[PFTM_TCP_CLOSED] = PFTM_TCP_CLOSED_VAL; 299 timeout[PFTM_UDP_FIRST_PACKET] = PFTM_UDP_FIRST_PACKET_VAL; 300 timeout[PFTM_UDP_SINGLE] = PFTM_UDP_SINGLE_VAL; 301 timeout[PFTM_UDP_MULTIPLE] = PFTM_UDP_MULTIPLE_VAL; 302 timeout[PFTM_ICMP_FIRST_PACKET] = PFTM_ICMP_FIRST_PACKET_VAL; 303 timeout[PFTM_ICMP_ERROR_REPLY] = PFTM_ICMP_ERROR_REPLY_VAL; 304 timeout[PFTM_OTHER_FIRST_PACKET] = PFTM_OTHER_FIRST_PACKET_VAL; 305 timeout[PFTM_OTHER_SINGLE] = PFTM_OTHER_SINGLE_VAL; 306 timeout[PFTM_OTHER_MULTIPLE] = PFTM_OTHER_MULTIPLE_VAL; 307 timeout[PFTM_FRAG] = PFTM_FRAG_VAL; 308 timeout[PFTM_INTERVAL] = PFTM_INTERVAL_VAL; 309 timeout[PFTM_SRC_NODE] = PFTM_SRC_NODE_VAL; 310 timeout[PFTM_TS_DIFF] = PFTM_TS_DIFF_VAL; 311 timeout[PFTM_ADAPTIVE_START] = PFSTATE_ADAPT_START; 312 timeout[PFTM_ADAPTIVE_END] = PFSTATE_ADAPT_END; 313 314 pf_normalize_init(); 315 bzero(&pf_status, sizeof(pf_status)); 316 pf_status.debug = PF_DEBUG_URGENT; 317 318 #ifdef __NetBSD__ 319 /* 320 * Defer rest of initialization until we can use cprng_fast32() 321 * which requires per-CPU data to have been initialized which 322 * in turn requires that all CPUs have been discovered and 323 * attached! 324 */ 325 config_interrupts(NULL, pf_deferred_init); 326 #else 327 /* XXX do our best to avoid a conflict */ 328 pf_status.hostid = cprng_fast32(); 329 330 /* require process context to purge states, so perform in a thread */ 331 kthread_create_deferred(pf_thread_create, NULL); 332 #endif /* !__NetBSD__ */ 333 334 #ifdef __NetBSD__ 335 pf_listener = kauth_listen_scope(KAUTH_SCOPE_NETWORK, 336 pf_listener_cb, NULL); 337 #endif /* __NetBSD__ */ 338 } 339 340 #ifdef __NetBSD__ 341 /* ARGSUSED */ 342 void 343 pf_deferred_init(device_t dev) 344 { 345 346 /* XXX do our best to avoid a conflict */ 347 pf_status.hostid = cprng_fast32(); 348 349 /* require process context to purge states, so perform in a thread */ 350 if (kthread_create(PRI_NONE, 0, NULL, pf_purge_thread, NULL, NULL, 351 "pfpurge")) 352 panic("pfpurge thread"); 353 } 354 #endif /* __NetBSD__ */ 355 356 #ifdef _MODULE 357 void 358 pfdetach(void) 359 { 360 extern int pf_purge_thread_running; 361 extern int pf_purge_thread_stop; 362 struct pf_anchor *anchor; 363 struct pf_state *state; 364 struct pf_src_node *node; 365 struct pfioc_table pt; 366 u_int32_t ticket; 367 int i; 368 char r = '\0'; 369 370 pf_purge_thread_stop = 1; 371 wakeup(pf_purge_thread); 372 373 /* wait until the kthread exits */ 374 while (pf_purge_thread_running) 375 tsleep(&pf_purge_thread_running, PWAIT, "pfdown", 0); 376 377 (void)pf_pfil_detach(); 378 379 pf_status.running = 0; 380 381 /* clear the rulesets */ 382 for (i = 0; i < PF_RULESET_MAX; i++) 383 if (pf_begin_rules(&ticket, i, &r) == 0) 384 pf_commit_rules(ticket, i, &r); 385 #ifdef ALTQ 386 if (pf_begin_altq(&ticket) == 0) 387 pf_commit_altq(ticket); 388 #endif /* ALTQ */ 389 390 /* clear states */ 391 RB_FOREACH(state, pf_state_tree_id, &tree_id) { 392 state->timeout = PFTM_PURGE; 393 #if NPFSYNC > 0 394 state->sync_flags = PFSTATE_NOSYNC; 395 #endif /* NPFSYNC > 0 */ 396 } 397 pf_purge_expired_states(pf_status.states); 398 #if NPFSYNC > 0 399 pfsync_clear_states(pf_status.hostid, NULL); 400 #endif /* NPFSYNC > 0 */ 401 402 /* clear source nodes */ 403 RB_FOREACH(state, pf_state_tree_id, &tree_id) { 404 state->src_node = NULL; 405 state->nat_src_node = NULL; 406 } 407 RB_FOREACH(node, pf_src_tree, &tree_src_tracking) { 408 node->expire = 1; 409 node->states = 0; 410 } 411 pf_purge_expired_src_nodes(0); 412 413 /* clear tables */ 414 memset(&pt, '\0', sizeof(pt)); 415 pfr_clr_tables(&pt.pfrio_table, &pt.pfrio_ndel, pt.pfrio_flags); 416 417 /* destroy anchors */ 418 while ((anchor = RB_MIN(pf_anchor_global, &pf_anchors)) != NULL) { 419 for (i = 0; i < PF_RULESET_MAX; i++) 420 if (pf_begin_rules(&ticket, i, anchor->name) == 0) 421 pf_commit_rules(ticket, i, anchor->name); 422 } 423 424 /* destroy main ruleset */ 425 pf_remove_if_empty_ruleset(&pf_main_ruleset); 426 427 /* destroy the pools */ 428 pool_destroy(&pf_pooladdr_pl); 429 pool_destroy(&pf_altq_pl); 430 pool_destroy(&pf_state_key_pl); 431 pool_destroy(&pf_state_pl); 432 pool_destroy(&pf_rule_pl); 433 pool_destroy(&pf_src_tree_pl); 434 435 rw_destroy(&pf_consistency_lock); 436 437 /* destroy subsystems */ 438 pf_normalize_destroy(); 439 pf_osfp_destroy(); 440 pfr_destroy(); 441 pfi_destroy(); 442 443 /* cleanup kauth listener */ 444 kauth_unlisten_scope(pf_listener); 445 } 446 #endif /* _MODULE */ 447 448 #ifndef __NetBSD__ 449 void 450 pf_thread_create(void *v) 451 { 452 if (kthread_create(pf_purge_thread, NULL, NULL, "pfpurge")) 453 panic("pfpurge thread"); 454 } 455 #endif /* !__NetBSD__ */ 456 457 int 458 pfopen(dev_t dev, int flags, int fmt, struct lwp *l) 459 { 460 if (minor(dev) >= 1) 461 return (ENXIO); 462 return (0); 463 } 464 465 int 466 pfclose(dev_t dev, int flags, int fmt, struct lwp *l) 467 { 468 if (minor(dev) >= 1) 469 return (ENXIO); 470 return (0); 471 } 472 473 struct pf_pool * 474 pf_get_pool(char *anchor, u_int32_t ticket, u_int8_t rule_action, 475 u_int32_t rule_number, u_int8_t r_last, u_int8_t active, 476 u_int8_t check_ticket) 477 { 478 struct pf_ruleset *ruleset; 479 struct pf_rule *rule; 480 int rs_num; 481 482 ruleset = pf_find_ruleset(anchor); 483 if (ruleset == NULL) 484 return (NULL); 485 rs_num = pf_get_ruleset_number(rule_action); 486 if (rs_num >= PF_RULESET_MAX) 487 return (NULL); 488 if (active) { 489 if (check_ticket && ticket != 490 ruleset->rules[rs_num].active.ticket) 491 return (NULL); 492 if (r_last) 493 rule = TAILQ_LAST(ruleset->rules[rs_num].active.ptr, 494 pf_rulequeue); 495 else 496 rule = TAILQ_FIRST(ruleset->rules[rs_num].active.ptr); 497 } else { 498 if (check_ticket && ticket != 499 ruleset->rules[rs_num].inactive.ticket) 500 return (NULL); 501 if (r_last) 502 rule = TAILQ_LAST(ruleset->rules[rs_num].inactive.ptr, 503 pf_rulequeue); 504 else 505 rule = TAILQ_FIRST(ruleset->rules[rs_num].inactive.ptr); 506 } 507 if (!r_last) { 508 while ((rule != NULL) && (rule->nr != rule_number)) 509 rule = TAILQ_NEXT(rule, entries); 510 } 511 if (rule == NULL) 512 return (NULL); 513 514 return (&rule->rpool); 515 } 516 517 void 518 pf_mv_pool(struct pf_palist *poola, struct pf_palist *poolb) 519 { 520 struct pf_pooladdr *mv_pool_pa; 521 522 while ((mv_pool_pa = TAILQ_FIRST(poola)) != NULL) { 523 TAILQ_REMOVE(poola, mv_pool_pa, entries); 524 TAILQ_INSERT_TAIL(poolb, mv_pool_pa, entries); 525 } 526 } 527 528 void 529 pf_empty_pool(struct pf_palist *poola) 530 { 531 struct pf_pooladdr *empty_pool_pa; 532 533 while ((empty_pool_pa = TAILQ_FIRST(poola)) != NULL) { 534 pfi_dynaddr_remove(&empty_pool_pa->addr); 535 pf_tbladdr_remove(&empty_pool_pa->addr); 536 pfi_kif_unref(empty_pool_pa->kif, PFI_KIF_REF_RULE); 537 TAILQ_REMOVE(poola, empty_pool_pa, entries); 538 pool_put(&pf_pooladdr_pl, empty_pool_pa); 539 } 540 } 541 542 void 543 pf_rm_rule(struct pf_rulequeue *rulequeue, struct pf_rule *rule) 544 { 545 if (rulequeue != NULL) { 546 if (rule->states <= 0) { 547 /* 548 * XXX - we need to remove the table *before* detaching 549 * the rule to make sure the table code does not delete 550 * the anchor under our feet. 551 */ 552 pf_tbladdr_remove(&rule->src.addr); 553 pf_tbladdr_remove(&rule->dst.addr); 554 if (rule->overload_tbl) 555 pfr_detach_table(rule->overload_tbl); 556 } 557 TAILQ_REMOVE(rulequeue, rule, entries); 558 rule->entries.tqe_prev = NULL; 559 rule->nr = -1; 560 } 561 562 if (rule->states > 0 || rule->src_nodes > 0 || 563 rule->entries.tqe_prev != NULL) 564 return; 565 pf_tag_unref(rule->tag); 566 pf_tag_unref(rule->match_tag); 567 #ifdef ALTQ 568 if (rule->pqid != rule->qid) 569 pf_qid_unref(rule->pqid); 570 pf_qid_unref(rule->qid); 571 #endif 572 pf_rtlabel_remove(&rule->src.addr); 573 pf_rtlabel_remove(&rule->dst.addr); 574 pfi_dynaddr_remove(&rule->src.addr); 575 pfi_dynaddr_remove(&rule->dst.addr); 576 if (rulequeue == NULL) { 577 pf_tbladdr_remove(&rule->src.addr); 578 pf_tbladdr_remove(&rule->dst.addr); 579 if (rule->overload_tbl) 580 pfr_detach_table(rule->overload_tbl); 581 } 582 pfi_kif_unref(rule->kif, PFI_KIF_REF_RULE); 583 pf_anchor_remove(rule); 584 pf_empty_pool(&rule->rpool.list); 585 pool_put(&pf_rule_pl, rule); 586 } 587 588 u_int16_t 589 tagname2tag(struct pf_tags *head, char *tagname) 590 { 591 struct pf_tagname *tag, *p = NULL; 592 u_int16_t new_tagid = 1; 593 594 TAILQ_FOREACH(tag, head, entries) 595 if (strcmp(tagname, tag->name) == 0) { 596 tag->ref++; 597 return (tag->tag); 598 } 599 600 /* 601 * to avoid fragmentation, we do a linear search from the beginning 602 * and take the first free slot we find. if there is none or the list 603 * is empty, append a new entry at the end. 604 */ 605 606 /* new entry */ 607 if (!TAILQ_EMPTY(head)) 608 for (p = TAILQ_FIRST(head); p != NULL && 609 p->tag == new_tagid; p = TAILQ_NEXT(p, entries)) 610 new_tagid = p->tag + 1; 611 612 if (new_tagid > TAGID_MAX) 613 return (0); 614 615 /* allocate and fill new struct pf_tagname */ 616 tag = (struct pf_tagname *)malloc(sizeof(struct pf_tagname), 617 M_TEMP, M_NOWAIT); 618 if (tag == NULL) 619 return (0); 620 bzero(tag, sizeof(struct pf_tagname)); 621 strlcpy(tag->name, tagname, sizeof(tag->name)); 622 tag->tag = new_tagid; 623 tag->ref++; 624 625 if (p != NULL) /* insert new entry before p */ 626 TAILQ_INSERT_BEFORE(p, tag, entries); 627 else /* either list empty or no free slot in between */ 628 TAILQ_INSERT_TAIL(head, tag, entries); 629 630 return (tag->tag); 631 } 632 633 void 634 tag2tagname(struct pf_tags *head, u_int16_t tagid, char *p) 635 { 636 struct pf_tagname *tag; 637 638 TAILQ_FOREACH(tag, head, entries) 639 if (tag->tag == tagid) { 640 strlcpy(p, tag->name, PF_TAG_NAME_SIZE); 641 return; 642 } 643 } 644 645 void 646 tag_unref(struct pf_tags *head, u_int16_t tag) 647 { 648 struct pf_tagname *p, *next; 649 650 if (tag == 0) 651 return; 652 653 for (p = TAILQ_FIRST(head); p != NULL; p = next) { 654 next = TAILQ_NEXT(p, entries); 655 if (tag == p->tag) { 656 if (--p->ref == 0) { 657 TAILQ_REMOVE(head, p, entries); 658 free(p, M_TEMP); 659 } 660 break; 661 } 662 } 663 } 664 665 u_int16_t 666 pf_tagname2tag(char *tagname) 667 { 668 return (tagname2tag(&pf_tags, tagname)); 669 } 670 671 void 672 pf_tag2tagname(u_int16_t tagid, char *p) 673 { 674 tag2tagname(&pf_tags, tagid, p); 675 } 676 677 void 678 pf_tag_ref(u_int16_t tag) 679 { 680 struct pf_tagname *t; 681 682 TAILQ_FOREACH(t, &pf_tags, entries) 683 if (t->tag == tag) 684 break; 685 if (t != NULL) 686 t->ref++; 687 } 688 689 void 690 pf_tag_unref(u_int16_t tag) 691 { 692 tag_unref(&pf_tags, tag); 693 } 694 695 int 696 pf_rtlabel_add(struct pf_addr_wrap *a) 697 { 698 #ifndef __NetBSD__ 699 if (a->type == PF_ADDR_RTLABEL && 700 (a->v.rtlabel = rtlabel_name2id(a->v.rtlabelname)) == 0) 701 return (-1); 702 #endif /* !__NetBSD__ */ 703 return (0); 704 } 705 706 void 707 pf_rtlabel_remove(struct pf_addr_wrap *a) 708 { 709 #ifndef __NetBSD__ 710 if (a->type == PF_ADDR_RTLABEL) 711 rtlabel_unref(a->v.rtlabel); 712 #endif /* !__NetBSD__ */ 713 } 714 715 void 716 pf_rtlabel_copyout(struct pf_addr_wrap *a) 717 { 718 #ifndef __NetBSD__ 719 const char *name; 720 721 if (a->type == PF_ADDR_RTLABEL && a->v.rtlabel) { 722 if ((name = rtlabel_id2name(a->v.rtlabel)) == NULL) 723 strlcpy(a->v.rtlabelname, "?", 724 sizeof(a->v.rtlabelname)); 725 else 726 strlcpy(a->v.rtlabelname, name, 727 sizeof(a->v.rtlabelname)); 728 } 729 #endif /* !__NetBSD__ */ 730 } 731 732 #ifdef ALTQ 733 u_int32_t 734 pf_qname2qid(char *qname) 735 { 736 return ((u_int32_t)tagname2tag(&pf_qids, qname)); 737 } 738 739 void 740 pf_qid2qname(u_int32_t qid, char *p) 741 { 742 tag2tagname(&pf_qids, (u_int16_t)qid, p); 743 } 744 745 void 746 pf_qid_unref(u_int32_t qid) 747 { 748 tag_unref(&pf_qids, (u_int16_t)qid); 749 } 750 751 int 752 pf_begin_altq(u_int32_t *ticket) 753 { 754 struct pf_altq *altq; 755 int error = 0; 756 757 /* Purge the old altq list */ 758 while ((altq = TAILQ_FIRST(pf_altqs_inactive)) != NULL) { 759 TAILQ_REMOVE(pf_altqs_inactive, altq, entries); 760 if (altq->qname[0] == 0) { 761 /* detach and destroy the discipline */ 762 error = altq_remove(altq); 763 } else 764 pf_qid_unref(altq->qid); 765 pool_put(&pf_altq_pl, altq); 766 } 767 if (error) 768 return (error); 769 *ticket = ++ticket_altqs_inactive; 770 altqs_inactive_open = 1; 771 return (0); 772 } 773 774 int 775 pf_rollback_altq(u_int32_t ticket) 776 { 777 struct pf_altq *altq; 778 int error = 0; 779 780 if (!altqs_inactive_open || ticket != ticket_altqs_inactive) 781 return (0); 782 /* Purge the old altq list */ 783 while ((altq = TAILQ_FIRST(pf_altqs_inactive)) != NULL) { 784 TAILQ_REMOVE(pf_altqs_inactive, altq, entries); 785 if (altq->qname[0] == 0) { 786 /* detach and destroy the discipline */ 787 error = altq_remove(altq); 788 } else 789 pf_qid_unref(altq->qid); 790 pool_put(&pf_altq_pl, altq); 791 } 792 altqs_inactive_open = 0; 793 return (error); 794 } 795 796 int 797 pf_commit_altq(u_int32_t ticket) 798 { 799 struct pf_altqqueue *old_altqs; 800 struct pf_altq *altq; 801 int s, err, error = 0; 802 803 if (!altqs_inactive_open || ticket != ticket_altqs_inactive) 804 return (EBUSY); 805 806 /* swap altqs, keep the old. */ 807 s = splsoftnet(); 808 old_altqs = pf_altqs_active; 809 pf_altqs_active = pf_altqs_inactive; 810 pf_altqs_inactive = old_altqs; 811 ticket_altqs_active = ticket_altqs_inactive; 812 813 /* Attach new disciplines */ 814 TAILQ_FOREACH(altq, pf_altqs_active, entries) { 815 if (altq->qname[0] == 0) { 816 /* attach the discipline */ 817 error = altq_pfattach(altq); 818 if (error == 0 && pf_altq_running) 819 error = pf_enable_altq(altq); 820 if (error != 0) { 821 splx(s); 822 return (error); 823 } 824 } 825 } 826 827 /* Purge the old altq list */ 828 while ((altq = TAILQ_FIRST(pf_altqs_inactive)) != NULL) { 829 TAILQ_REMOVE(pf_altqs_inactive, altq, entries); 830 if (altq->qname[0] == 0) { 831 /* detach and destroy the discipline */ 832 if (pf_altq_running) 833 error = pf_disable_altq(altq); 834 err = altq_pfdetach(altq); 835 if (err != 0 && error == 0) 836 error = err; 837 err = altq_remove(altq); 838 if (err != 0 && error == 0) 839 error = err; 840 } else 841 pf_qid_unref(altq->qid); 842 pool_put(&pf_altq_pl, altq); 843 } 844 splx(s); 845 846 altqs_inactive_open = 0; 847 return (error); 848 } 849 850 int 851 pf_enable_altq(struct pf_altq *altq) 852 { 853 struct ifnet *ifp; 854 struct tb_profile tb; 855 int s, error = 0; 856 857 if ((ifp = ifunit(altq->ifname)) == NULL) 858 return (EINVAL); 859 860 if (ifp->if_snd.altq_type != ALTQT_NONE) 861 error = altq_enable(&ifp->if_snd); 862 863 /* set tokenbucket regulator */ 864 if (error == 0 && ifp != NULL && ALTQ_IS_ENABLED(&ifp->if_snd)) { 865 tb.rate = altq->ifbandwidth; 866 tb.depth = altq->tbrsize; 867 s = splnet(); 868 error = tbr_set(&ifp->if_snd, &tb); 869 splx(s); 870 } 871 872 return (error); 873 } 874 875 int 876 pf_disable_altq(struct pf_altq *altq) 877 { 878 struct ifnet *ifp; 879 struct tb_profile tb; 880 int s, error; 881 882 if ((ifp = ifunit(altq->ifname)) == NULL) 883 return (EINVAL); 884 885 /* 886 * when the discipline is no longer referenced, it was overridden 887 * by a new one. if so, just return. 888 */ 889 if (altq->altq_disc != ifp->if_snd.altq_disc) 890 return (0); 891 892 error = altq_disable(&ifp->if_snd); 893 894 if (error == 0) { 895 /* clear tokenbucket regulator */ 896 tb.rate = 0; 897 s = splnet(); 898 error = tbr_set(&ifp->if_snd, &tb); 899 splx(s); 900 } 901 902 return (error); 903 } 904 #endif /* ALTQ */ 905 906 int 907 pf_begin_rules(u_int32_t *ticket, int rs_num, const char *anchor) 908 { 909 struct pf_ruleset *rs; 910 struct pf_rule *rule; 911 912 if (rs_num < 0 || rs_num >= PF_RULESET_MAX) 913 return (EINVAL); 914 rs = pf_find_or_create_ruleset(anchor); 915 if (rs == NULL) 916 return (EINVAL); 917 while ((rule = TAILQ_FIRST(rs->rules[rs_num].inactive.ptr)) != NULL) { 918 pf_rm_rule(rs->rules[rs_num].inactive.ptr, rule); 919 rs->rules[rs_num].inactive.rcount--; 920 } 921 *ticket = ++rs->rules[rs_num].inactive.ticket; 922 rs->rules[rs_num].inactive.open = 1; 923 return (0); 924 } 925 926 int 927 pf_rollback_rules(u_int32_t ticket, int rs_num, char *anchor) 928 { 929 struct pf_ruleset *rs; 930 struct pf_rule *rule; 931 932 if (rs_num < 0 || rs_num >= PF_RULESET_MAX) 933 return (EINVAL); 934 rs = pf_find_ruleset(anchor); 935 if (rs == NULL || !rs->rules[rs_num].inactive.open || 936 rs->rules[rs_num].inactive.ticket != ticket) 937 return (0); 938 while ((rule = TAILQ_FIRST(rs->rules[rs_num].inactive.ptr)) != NULL) { 939 pf_rm_rule(rs->rules[rs_num].inactive.ptr, rule); 940 rs->rules[rs_num].inactive.rcount--; 941 } 942 rs->rules[rs_num].inactive.open = 0; 943 return (0); 944 } 945 946 #define PF_MD5_UPD(st, elm) \ 947 MD5Update(ctx, (u_int8_t *) &(st)->elm, sizeof((st)->elm)) 948 949 #define PF_MD5_UPD_STR(st, elm) \ 950 MD5Update(ctx, (u_int8_t *) (st)->elm, strlen((st)->elm)) 951 952 #define PF_MD5_UPD_HTONL(st, elm, stor) do { \ 953 (stor) = htonl((st)->elm); \ 954 MD5Update(ctx, (u_int8_t *) &(stor), sizeof(u_int32_t));\ 955 } while (0) 956 957 #define PF_MD5_UPD_HTONS(st, elm, stor) do { \ 958 (stor) = htons((st)->elm); \ 959 MD5Update(ctx, (u_int8_t *) &(stor), sizeof(u_int16_t));\ 960 } while (0) 961 962 void 963 pf_hash_rule_addr(MD5_CTX *ctx, struct pf_rule_addr *pfr) 964 { 965 PF_MD5_UPD(pfr, addr.type); 966 switch (pfr->addr.type) { 967 case PF_ADDR_DYNIFTL: 968 PF_MD5_UPD(pfr, addr.v.ifname); 969 PF_MD5_UPD(pfr, addr.iflags); 970 break; 971 case PF_ADDR_TABLE: 972 PF_MD5_UPD(pfr, addr.v.tblname); 973 break; 974 case PF_ADDR_ADDRMASK: 975 /* XXX ignore af? */ 976 PF_MD5_UPD(pfr, addr.v.a.addr.addr32); 977 PF_MD5_UPD(pfr, addr.v.a.mask.addr32); 978 break; 979 case PF_ADDR_RTLABEL: 980 PF_MD5_UPD(pfr, addr.v.rtlabelname); 981 break; 982 } 983 984 PF_MD5_UPD(pfr, port[0]); 985 PF_MD5_UPD(pfr, port[1]); 986 PF_MD5_UPD(pfr, neg); 987 PF_MD5_UPD(pfr, port_op); 988 } 989 990 void 991 pf_hash_rule(MD5_CTX *ctx, struct pf_rule *rule) 992 { 993 u_int16_t x; 994 u_int32_t y; 995 996 pf_hash_rule_addr(ctx, &rule->src); 997 pf_hash_rule_addr(ctx, &rule->dst); 998 PF_MD5_UPD_STR(rule, label); 999 PF_MD5_UPD_STR(rule, ifname); 1000 PF_MD5_UPD_STR(rule, match_tagname); 1001 PF_MD5_UPD_HTONS(rule, match_tag, x); /* dup? */ 1002 PF_MD5_UPD_HTONL(rule, os_fingerprint, y); 1003 PF_MD5_UPD_HTONL(rule, prob, y); 1004 PF_MD5_UPD_HTONL(rule, uid.uid[0], y); 1005 PF_MD5_UPD_HTONL(rule, uid.uid[1], y); 1006 PF_MD5_UPD(rule, uid.op); 1007 PF_MD5_UPD_HTONL(rule, gid.gid[0], y); 1008 PF_MD5_UPD_HTONL(rule, gid.gid[1], y); 1009 PF_MD5_UPD(rule, gid.op); 1010 PF_MD5_UPD_HTONL(rule, rule_flag, y); 1011 PF_MD5_UPD(rule, action); 1012 PF_MD5_UPD(rule, direction); 1013 PF_MD5_UPD(rule, af); 1014 PF_MD5_UPD(rule, quick); 1015 PF_MD5_UPD(rule, ifnot); 1016 PF_MD5_UPD(rule, match_tag_not); 1017 PF_MD5_UPD(rule, natpass); 1018 PF_MD5_UPD(rule, keep_state); 1019 PF_MD5_UPD(rule, proto); 1020 PF_MD5_UPD(rule, type); 1021 PF_MD5_UPD(rule, code); 1022 PF_MD5_UPD(rule, flags); 1023 PF_MD5_UPD(rule, flagset); 1024 PF_MD5_UPD(rule, allow_opts); 1025 PF_MD5_UPD(rule, rt); 1026 PF_MD5_UPD(rule, tos); 1027 } 1028 1029 int 1030 pf_commit_rules(u_int32_t ticket, int rs_num, char *anchor) 1031 { 1032 struct pf_ruleset *rs; 1033 struct pf_rule *rule, **old_array; 1034 struct pf_rulequeue *old_rules; 1035 int s, error; 1036 u_int32_t old_rcount; 1037 1038 if (rs_num < 0 || rs_num >= PF_RULESET_MAX) 1039 return (EINVAL); 1040 rs = pf_find_ruleset(anchor); 1041 if (rs == NULL || !rs->rules[rs_num].inactive.open || 1042 ticket != rs->rules[rs_num].inactive.ticket) 1043 return (EBUSY); 1044 1045 /* Calculate checksum for the main ruleset */ 1046 if (rs == &pf_main_ruleset) { 1047 error = pf_setup_pfsync_matching(rs); 1048 if (error != 0) 1049 return (error); 1050 } 1051 1052 /* Swap rules, keep the old. */ 1053 s = splsoftnet(); 1054 old_rules = rs->rules[rs_num].active.ptr; 1055 old_rcount = rs->rules[rs_num].active.rcount; 1056 old_array = rs->rules[rs_num].active.ptr_array; 1057 1058 rs->rules[rs_num].active.ptr = 1059 rs->rules[rs_num].inactive.ptr; 1060 rs->rules[rs_num].active.ptr_array = 1061 rs->rules[rs_num].inactive.ptr_array; 1062 rs->rules[rs_num].active.rcount = 1063 rs->rules[rs_num].inactive.rcount; 1064 rs->rules[rs_num].inactive.ptr = old_rules; 1065 rs->rules[rs_num].inactive.ptr_array = old_array; 1066 rs->rules[rs_num].inactive.rcount = old_rcount; 1067 1068 rs->rules[rs_num].active.ticket = 1069 rs->rules[rs_num].inactive.ticket; 1070 pf_calc_skip_steps(rs->rules[rs_num].active.ptr); 1071 1072 1073 /* Purge the old rule list. */ 1074 while ((rule = TAILQ_FIRST(old_rules)) != NULL) 1075 pf_rm_rule(old_rules, rule); 1076 if (rs->rules[rs_num].inactive.ptr_array) 1077 free(rs->rules[rs_num].inactive.ptr_array, M_TEMP); 1078 rs->rules[rs_num].inactive.ptr_array = NULL; 1079 rs->rules[rs_num].inactive.rcount = 0; 1080 rs->rules[rs_num].inactive.open = 0; 1081 pf_remove_if_empty_ruleset(rs); 1082 splx(s); 1083 return (0); 1084 } 1085 1086 void 1087 pf_state_export(struct pfsync_state *sp, struct pf_state_key *sk, 1088 struct pf_state *s) 1089 { 1090 int secs = time_second; 1091 bzero(sp, sizeof(struct pfsync_state)); 1092 1093 /* copy from state key */ 1094 sp->lan.addr = sk->lan.addr; 1095 sp->lan.port = sk->lan.port; 1096 sp->gwy.addr = sk->gwy.addr; 1097 sp->gwy.port = sk->gwy.port; 1098 sp->ext.addr = sk->ext.addr; 1099 sp->ext.port = sk->ext.port; 1100 sp->proto = sk->proto; 1101 sp->af = sk->af; 1102 sp->direction = sk->direction; 1103 1104 /* copy from state */ 1105 memcpy(&sp->id, &s->id, sizeof(sp->id)); 1106 sp->creatorid = s->creatorid; 1107 strlcpy(sp->ifname, s->kif->pfik_name, sizeof(sp->ifname)); 1108 pf_state_peer_to_pfsync(&s->src, &sp->src); 1109 pf_state_peer_to_pfsync(&s->dst, &sp->dst); 1110 1111 sp->rule = s->rule.ptr->nr; 1112 sp->nat_rule = (s->nat_rule.ptr == NULL) ? -1 : s->nat_rule.ptr->nr; 1113 sp->anchor = (s->anchor.ptr == NULL) ? -1 : s->anchor.ptr->nr; 1114 1115 pf_state_counter_to_pfsync(s->bytes[0], sp->bytes[0]); 1116 pf_state_counter_to_pfsync(s->bytes[1], sp->bytes[1]); 1117 pf_state_counter_to_pfsync(s->packets[0], sp->packets[0]); 1118 pf_state_counter_to_pfsync(s->packets[1], sp->packets[1]); 1119 sp->creation = secs - s->creation; 1120 sp->expire = pf_state_expires(s); 1121 sp->log = s->log; 1122 sp->allow_opts = s->allow_opts; 1123 sp->timeout = s->timeout; 1124 1125 if (s->src_node) 1126 sp->sync_flags |= PFSYNC_FLAG_SRCNODE; 1127 if (s->nat_src_node) 1128 sp->sync_flags |= PFSYNC_FLAG_NATSRCNODE; 1129 1130 if (sp->expire > secs) 1131 sp->expire -= secs; 1132 else 1133 sp->expire = 0; 1134 1135 } 1136 1137 void 1138 pf_state_import(struct pfsync_state *sp, struct pf_state_key *sk, 1139 struct pf_state *s) 1140 { 1141 /* copy to state key */ 1142 sk->lan.addr = sp->lan.addr; 1143 sk->lan.port = sp->lan.port; 1144 sk->gwy.addr = sp->gwy.addr; 1145 sk->gwy.port = sp->gwy.port; 1146 sk->ext.addr = sp->ext.addr; 1147 sk->ext.port = sp->ext.port; 1148 sk->proto = sp->proto; 1149 sk->af = sp->af; 1150 sk->direction = sp->direction; 1151 1152 /* copy to state */ 1153 memcpy(&s->id, &sp->id, sizeof(sp->id)); 1154 s->creatorid = sp->creatorid; 1155 pf_state_peer_from_pfsync(&sp->src, &s->src); 1156 pf_state_peer_from_pfsync(&sp->dst, &s->dst); 1157 1158 s->rule.ptr = &pf_default_rule; 1159 s->rule.ptr->states++; 1160 s->nat_rule.ptr = NULL; 1161 s->anchor.ptr = NULL; 1162 s->rt_kif = NULL; 1163 s->creation = time_second; 1164 s->expire = time_second; 1165 s->timeout = sp->timeout; 1166 if (sp->expire > 0) 1167 s->expire -= pf_default_rule.timeout[sp->timeout] - sp->expire; 1168 s->pfsync_time = 0; 1169 s->packets[0] = s->packets[1] = 0; 1170 s->bytes[0] = s->bytes[1] = 0; 1171 } 1172 1173 int 1174 pf_state_add(struct pfsync_state* sp) 1175 { 1176 struct pf_state *s; 1177 struct pf_state_key *sk; 1178 struct pfi_kif *kif; 1179 1180 if (sp->timeout >= PFTM_MAX && 1181 sp->timeout != PFTM_UNTIL_PACKET) { 1182 return EINVAL; 1183 } 1184 s = pool_get(&pf_state_pl, PR_NOWAIT); 1185 if (s == NULL) { 1186 return ENOMEM; 1187 } 1188 bzero(s, sizeof(struct pf_state)); 1189 if ((sk = pf_alloc_state_key(s)) == NULL) { 1190 pool_put(&pf_state_pl, s); 1191 return ENOMEM; 1192 } 1193 pf_state_import(sp, sk, s); 1194 kif = pfi_kif_get(sp->ifname); 1195 if (kif == NULL) { 1196 pool_put(&pf_state_pl, s); 1197 pool_put(&pf_state_key_pl, sk); 1198 return ENOENT; 1199 } 1200 if (pf_insert_state(kif, s)) { 1201 pfi_kif_unref(kif, PFI_KIF_REF_NONE); 1202 pool_put(&pf_state_pl, s); 1203 return ENOMEM; 1204 } 1205 1206 return 0; 1207 } 1208 1209 1210 int 1211 pf_setup_pfsync_matching(struct pf_ruleset *rs) 1212 { 1213 MD5_CTX ctx; 1214 struct pf_rule *rule; 1215 int rs_cnt; 1216 u_int8_t digest[PF_MD5_DIGEST_LENGTH]; 1217 1218 MD5Init(&ctx); 1219 for (rs_cnt = 0; rs_cnt < PF_RULESET_MAX; rs_cnt++) { 1220 /* XXX PF_RULESET_SCRUB as well? */ 1221 if (rs_cnt == PF_RULESET_SCRUB) 1222 continue; 1223 1224 if (rs->rules[rs_cnt].inactive.ptr_array) 1225 free(rs->rules[rs_cnt].inactive.ptr_array, M_TEMP); 1226 rs->rules[rs_cnt].inactive.ptr_array = NULL; 1227 1228 if (rs->rules[rs_cnt].inactive.rcount) { 1229 rs->rules[rs_cnt].inactive.ptr_array = 1230 malloc(sizeof(void *) * 1231 rs->rules[rs_cnt].inactive.rcount, 1232 M_TEMP, M_NOWAIT); 1233 1234 if (!rs->rules[rs_cnt].inactive.ptr_array) 1235 return (ENOMEM); 1236 } 1237 1238 TAILQ_FOREACH(rule, rs->rules[rs_cnt].inactive.ptr, 1239 entries) { 1240 pf_hash_rule(&ctx, rule); 1241 (rs->rules[rs_cnt].inactive.ptr_array)[rule->nr] = rule; 1242 } 1243 } 1244 1245 MD5Final(digest, &ctx); 1246 memcpy(pf_status.pf_chksum, digest, sizeof(pf_status.pf_chksum)); 1247 return (0); 1248 } 1249 1250 int 1251 pfioctl(dev_t dev, u_long cmd, void *addr, int flags, struct lwp *l) 1252 { 1253 struct pf_pooladdr *pa = NULL; 1254 struct pf_pool *pool = NULL; 1255 int s; 1256 int error = 0; 1257 1258 /* XXX keep in sync with switch() below */ 1259 if (kauth_authorize_network(l->l_cred, KAUTH_NETWORK_FIREWALL, 1260 KAUTH_REQ_NETWORK_FIREWALL_FW, NULL, NULL, NULL)) 1261 switch (cmd) { 1262 case DIOCGETRULES: 1263 case DIOCGETRULE: 1264 case DIOCGETADDRS: 1265 case DIOCGETADDR: 1266 case DIOCGETSTATE: 1267 case DIOCSETSTATUSIF: 1268 case DIOCGETSTATUS: 1269 case DIOCCLRSTATUS: 1270 case DIOCNATLOOK: 1271 case DIOCSETDEBUG: 1272 case DIOCGETSTATES: 1273 case DIOCGETTIMEOUT: 1274 case DIOCCLRRULECTRS: 1275 case DIOCGETLIMIT: 1276 case DIOCGETALTQS: 1277 case DIOCGETALTQ: 1278 case DIOCGETQSTATS: 1279 case DIOCGETRULESETS: 1280 case DIOCGETRULESET: 1281 case DIOCRGETTABLES: 1282 case DIOCRGETTSTATS: 1283 case DIOCRCLRTSTATS: 1284 case DIOCRCLRADDRS: 1285 case DIOCRADDADDRS: 1286 case DIOCRDELADDRS: 1287 case DIOCRSETADDRS: 1288 case DIOCRGETADDRS: 1289 case DIOCRGETASTATS: 1290 case DIOCRCLRASTATS: 1291 case DIOCRTSTADDRS: 1292 case DIOCOSFPGET: 1293 case DIOCGETSRCNODES: 1294 case DIOCCLRSRCNODES: 1295 case DIOCIGETIFACES: 1296 case DIOCSETIFFLAG: 1297 case DIOCCLRIFFLAG: 1298 case DIOCSETLCK: 1299 case DIOCADDSTATES: 1300 break; 1301 case DIOCRCLRTABLES: 1302 case DIOCRADDTABLES: 1303 case DIOCRDELTABLES: 1304 case DIOCRSETTFLAGS: 1305 if (((struct pfioc_table *)addr)->pfrio_flags & 1306 PFR_FLAG_DUMMY) 1307 break; /* dummy operation ok */ 1308 return (EPERM); 1309 default: 1310 return (EPERM); 1311 } 1312 1313 if (!(flags & FWRITE)) 1314 switch (cmd) { 1315 case DIOCGETRULES: 1316 case DIOCGETADDRS: 1317 case DIOCGETADDR: 1318 case DIOCGETSTATE: 1319 case DIOCGETSTATUS: 1320 case DIOCGETSTATES: 1321 case DIOCGETTIMEOUT: 1322 case DIOCGETLIMIT: 1323 case DIOCGETALTQS: 1324 case DIOCGETALTQ: 1325 case DIOCGETQSTATS: 1326 case DIOCGETRULESETS: 1327 case DIOCGETRULESET: 1328 case DIOCNATLOOK: 1329 case DIOCRGETTABLES: 1330 case DIOCRGETTSTATS: 1331 case DIOCRGETADDRS: 1332 case DIOCRGETASTATS: 1333 case DIOCRTSTADDRS: 1334 case DIOCOSFPGET: 1335 case DIOCGETSRCNODES: 1336 case DIOCIGETIFACES: 1337 case DIOCSETLCK: 1338 break; 1339 case DIOCRCLRTABLES: 1340 case DIOCRADDTABLES: 1341 case DIOCRDELTABLES: 1342 case DIOCRCLRTSTATS: 1343 case DIOCRCLRADDRS: 1344 case DIOCRADDADDRS: 1345 case DIOCRDELADDRS: 1346 case DIOCRSETADDRS: 1347 case DIOCRSETTFLAGS: 1348 case DIOCADDSTATES: 1349 if (((struct pfioc_table *)addr)->pfrio_flags & 1350 PFR_FLAG_DUMMY) { 1351 flags |= FWRITE; /* need write lock for dummy */ 1352 break; /* dummy operation ok */ 1353 } 1354 return (EACCES); 1355 case DIOCGETRULE: 1356 if (((struct pfioc_rule *)addr)->action == PF_GET_CLR_CNTR) 1357 return (EACCES); 1358 break; 1359 default: 1360 return (EACCES); 1361 } 1362 1363 if (flags & FWRITE) 1364 rw_enter_write(&pf_consistency_lock); 1365 else 1366 rw_enter_read(&pf_consistency_lock); 1367 1368 s = splsoftnet(); 1369 switch (cmd) { 1370 1371 case DIOCSTART: 1372 if (pf_status.running) 1373 error = EEXIST; 1374 else { 1375 #ifdef __NetBSD__ 1376 error = pf_pfil_attach(); 1377 if (error) 1378 break; 1379 #endif /* __NetBSD__ */ 1380 pf_status.running = 1; 1381 pf_status.since = time_second; 1382 if (pf_status.stateid == 0) { 1383 pf_status.stateid = time_second; 1384 pf_status.stateid = pf_status.stateid << 32; 1385 } 1386 DPFPRINTF(PF_DEBUG_MISC, ("pf: started\n")); 1387 } 1388 break; 1389 1390 case DIOCSTOP: 1391 if (!pf_status.running) 1392 error = ENOENT; 1393 else { 1394 #ifdef __NetBSD__ 1395 error = pf_pfil_detach(); 1396 if (error) 1397 break; 1398 #endif /* __NetBSD__ */ 1399 pf_status.running = 0; 1400 pf_status.since = time_second; 1401 DPFPRINTF(PF_DEBUG_MISC, ("pf: stopped\n")); 1402 } 1403 break; 1404 1405 case DIOCADDRULE: { 1406 struct pfioc_rule *pr = (struct pfioc_rule *)addr; 1407 struct pf_ruleset *ruleset; 1408 struct pf_rule *rule, *tail; 1409 int rs_num; 1410 1411 pr->anchor[sizeof(pr->anchor) - 1] = 0; 1412 ruleset = pf_find_ruleset(pr->anchor); 1413 if (ruleset == NULL) { 1414 error = EINVAL; 1415 break; 1416 } 1417 rs_num = pf_get_ruleset_number(pr->rule.action); 1418 if (rs_num >= PF_RULESET_MAX) { 1419 error = EINVAL; 1420 break; 1421 } 1422 if (pr->rule.return_icmp >> 8 > ICMP_MAXTYPE) { 1423 error = EINVAL; 1424 break; 1425 } 1426 if (pr->ticket != ruleset->rules[rs_num].inactive.ticket) { 1427 error = EBUSY; 1428 break; 1429 } 1430 if (pr->pool_ticket != ticket_pabuf) { 1431 error = EBUSY; 1432 break; 1433 } 1434 rule = pool_get(&pf_rule_pl, PR_NOWAIT); 1435 if (rule == NULL) { 1436 error = ENOMEM; 1437 break; 1438 } 1439 bcopy(&pr->rule, rule, sizeof(struct pf_rule)); 1440 #ifdef __NetBSD__ 1441 rule->cuid = kauth_cred_getuid(l->l_cred); 1442 rule->cpid = l->l_proc->p_pid; 1443 #else 1444 rule->cuid = p->p_cred->p_ruid; 1445 rule->cpid = p->p_pid; 1446 #endif /* !__NetBSD__ */ 1447 rule->anchor = NULL; 1448 rule->kif = NULL; 1449 TAILQ_INIT(&rule->rpool.list); 1450 /* initialize refcounting */ 1451 rule->states = 0; 1452 rule->src_nodes = 0; 1453 rule->entries.tqe_prev = NULL; 1454 #ifndef INET 1455 if (rule->af == AF_INET) { 1456 pool_put(&pf_rule_pl, rule); 1457 error = EAFNOSUPPORT; 1458 break; 1459 } 1460 #endif /* INET */ 1461 #ifndef INET6 1462 if (rule->af == AF_INET6) { 1463 pool_put(&pf_rule_pl, rule); 1464 error = EAFNOSUPPORT; 1465 break; 1466 } 1467 #endif /* INET6 */ 1468 tail = TAILQ_LAST(ruleset->rules[rs_num].inactive.ptr, 1469 pf_rulequeue); 1470 if (tail) 1471 rule->nr = tail->nr + 1; 1472 else 1473 rule->nr = 0; 1474 if (rule->ifname[0]) { 1475 rule->kif = pfi_kif_get(rule->ifname); 1476 if (rule->kif == NULL) { 1477 pool_put(&pf_rule_pl, rule); 1478 error = EINVAL; 1479 break; 1480 } 1481 pfi_kif_ref(rule->kif, PFI_KIF_REF_RULE); 1482 } 1483 1484 #ifndef __NetBSD__ 1485 if (rule->rtableid > 0 && !rtable_exists(rule->rtableid)) 1486 error = EBUSY; 1487 #endif /* !__NetBSD__ */ 1488 1489 #ifdef ALTQ 1490 /* set queue IDs */ 1491 if (rule->qname[0] != 0) { 1492 if ((rule->qid = pf_qname2qid(rule->qname)) == 0) 1493 error = EBUSY; 1494 else if (rule->pqname[0] != 0) { 1495 if ((rule->pqid = 1496 pf_qname2qid(rule->pqname)) == 0) 1497 error = EBUSY; 1498 } else 1499 rule->pqid = rule->qid; 1500 } 1501 #endif 1502 if (rule->tagname[0]) 1503 if ((rule->tag = pf_tagname2tag(rule->tagname)) == 0) 1504 error = EBUSY; 1505 if (rule->match_tagname[0]) 1506 if ((rule->match_tag = 1507 pf_tagname2tag(rule->match_tagname)) == 0) 1508 error = EBUSY; 1509 if (rule->rt && !rule->direction) 1510 error = EINVAL; 1511 #if NPFLOG > 0 1512 if (!rule->log) 1513 rule->logif = 0; 1514 if (rule->logif >= PFLOGIFS_MAX) 1515 error = EINVAL; 1516 #endif 1517 if (pf_rtlabel_add(&rule->src.addr) || 1518 pf_rtlabel_add(&rule->dst.addr)) 1519 error = EBUSY; 1520 if (pfi_dynaddr_setup(&rule->src.addr, rule->af)) 1521 error = EINVAL; 1522 if (pfi_dynaddr_setup(&rule->dst.addr, rule->af)) 1523 error = EINVAL; 1524 if (pf_tbladdr_setup(ruleset, &rule->src.addr)) 1525 error = EINVAL; 1526 if (pf_tbladdr_setup(ruleset, &rule->dst.addr)) 1527 error = EINVAL; 1528 if (pf_anchor_setup(rule, ruleset, pr->anchor_call)) 1529 error = EINVAL; 1530 TAILQ_FOREACH(pa, &pf_pabuf, entries) 1531 if (pf_tbladdr_setup(ruleset, &pa->addr)) 1532 error = EINVAL; 1533 1534 rule->overload_tbl = NULL; 1535 if (rule->overload_tblname[0]) { 1536 if ((rule->overload_tbl = pfr_attach_table(ruleset, 1537 rule->overload_tblname)) == NULL) 1538 error = EINVAL; 1539 else 1540 rule->overload_tbl->pfrkt_flags |= 1541 PFR_TFLAG_ACTIVE; 1542 } 1543 1544 pf_mv_pool(&pf_pabuf, &rule->rpool.list); 1545 if (((((rule->action == PF_NAT) || (rule->action == PF_RDR) || 1546 (rule->action == PF_BINAT)) && rule->anchor == NULL) || 1547 (rule->rt > PF_FASTROUTE)) && 1548 (TAILQ_FIRST(&rule->rpool.list) == NULL)) 1549 error = EINVAL; 1550 1551 if (error) { 1552 pf_rm_rule(NULL, rule); 1553 break; 1554 } 1555 rule->rpool.cur = TAILQ_FIRST(&rule->rpool.list); 1556 rule->evaluations = rule->packets[0] = rule->packets[1] = 1557 rule->bytes[0] = rule->bytes[1] = 0; 1558 TAILQ_INSERT_TAIL(ruleset->rules[rs_num].inactive.ptr, 1559 rule, entries); 1560 ruleset->rules[rs_num].inactive.rcount++; 1561 break; 1562 } 1563 1564 case DIOCGETRULES: { 1565 struct pfioc_rule *pr = (struct pfioc_rule *)addr; 1566 struct pf_ruleset *ruleset; 1567 struct pf_rule *tail; 1568 int rs_num; 1569 1570 pr->anchor[sizeof(pr->anchor) - 1] = 0; 1571 ruleset = pf_find_ruleset(pr->anchor); 1572 if (ruleset == NULL) { 1573 error = EINVAL; 1574 break; 1575 } 1576 rs_num = pf_get_ruleset_number(pr->rule.action); 1577 if (rs_num >= PF_RULESET_MAX) { 1578 error = EINVAL; 1579 break; 1580 } 1581 tail = TAILQ_LAST(ruleset->rules[rs_num].active.ptr, 1582 pf_rulequeue); 1583 if (tail) 1584 pr->nr = tail->nr + 1; 1585 else 1586 pr->nr = 0; 1587 pr->ticket = ruleset->rules[rs_num].active.ticket; 1588 break; 1589 } 1590 1591 case DIOCGETRULE: { 1592 struct pfioc_rule *pr = (struct pfioc_rule *)addr; 1593 struct pf_ruleset *ruleset; 1594 struct pf_rule *rule; 1595 int rs_num, i; 1596 1597 pr->anchor[sizeof(pr->anchor) - 1] = 0; 1598 ruleset = pf_find_ruleset(pr->anchor); 1599 if (ruleset == NULL) { 1600 error = EINVAL; 1601 break; 1602 } 1603 rs_num = pf_get_ruleset_number(pr->rule.action); 1604 if (rs_num >= PF_RULESET_MAX) { 1605 error = EINVAL; 1606 break; 1607 } 1608 if (pr->ticket != ruleset->rules[rs_num].active.ticket) { 1609 error = EBUSY; 1610 break; 1611 } 1612 rule = TAILQ_FIRST(ruleset->rules[rs_num].active.ptr); 1613 while ((rule != NULL) && (rule->nr != pr->nr)) 1614 rule = TAILQ_NEXT(rule, entries); 1615 if (rule == NULL) { 1616 error = EBUSY; 1617 break; 1618 } 1619 bcopy(rule, &pr->rule, sizeof(struct pf_rule)); 1620 if (pf_anchor_copyout(ruleset, rule, pr)) { 1621 error = EBUSY; 1622 break; 1623 } 1624 pfi_dynaddr_copyout(&pr->rule.src.addr); 1625 pfi_dynaddr_copyout(&pr->rule.dst.addr); 1626 pf_tbladdr_copyout(&pr->rule.src.addr); 1627 pf_tbladdr_copyout(&pr->rule.dst.addr); 1628 pf_rtlabel_copyout(&pr->rule.src.addr); 1629 pf_rtlabel_copyout(&pr->rule.dst.addr); 1630 for (i = 0; i < PF_SKIP_COUNT; ++i) 1631 if (rule->skip[i].ptr == NULL) 1632 pr->rule.skip[i].nr = -1; 1633 else 1634 pr->rule.skip[i].nr = 1635 rule->skip[i].ptr->nr; 1636 1637 if (pr->action == PF_GET_CLR_CNTR) { 1638 rule->evaluations = 0; 1639 rule->packets[0] = rule->packets[1] = 0; 1640 rule->bytes[0] = rule->bytes[1] = 0; 1641 } 1642 break; 1643 } 1644 1645 case DIOCCHANGERULE: { 1646 struct pfioc_rule *pcr = (struct pfioc_rule *)addr; 1647 struct pf_ruleset *ruleset; 1648 struct pf_rule *oldrule = NULL, *newrule = NULL; 1649 u_int32_t nr = 0; 1650 int rs_num; 1651 1652 if (!(pcr->action == PF_CHANGE_REMOVE || 1653 pcr->action == PF_CHANGE_GET_TICKET) && 1654 pcr->pool_ticket != ticket_pabuf) { 1655 error = EBUSY; 1656 break; 1657 } 1658 1659 if (pcr->action < PF_CHANGE_ADD_HEAD || 1660 pcr->action > PF_CHANGE_GET_TICKET) { 1661 error = EINVAL; 1662 break; 1663 } 1664 ruleset = pf_find_ruleset(pcr->anchor); 1665 if (ruleset == NULL) { 1666 error = EINVAL; 1667 break; 1668 } 1669 rs_num = pf_get_ruleset_number(pcr->rule.action); 1670 if (rs_num >= PF_RULESET_MAX) { 1671 error = EINVAL; 1672 break; 1673 } 1674 1675 if (pcr->action == PF_CHANGE_GET_TICKET) { 1676 pcr->ticket = ++ruleset->rules[rs_num].active.ticket; 1677 break; 1678 } else { 1679 if (pcr->ticket != 1680 ruleset->rules[rs_num].active.ticket) { 1681 error = EINVAL; 1682 break; 1683 } 1684 if (pcr->rule.return_icmp >> 8 > ICMP_MAXTYPE) { 1685 error = EINVAL; 1686 break; 1687 } 1688 } 1689 1690 if (pcr->action != PF_CHANGE_REMOVE) { 1691 newrule = pool_get(&pf_rule_pl, PR_NOWAIT); 1692 if (newrule == NULL) { 1693 error = ENOMEM; 1694 break; 1695 } 1696 bcopy(&pcr->rule, newrule, sizeof(struct pf_rule)); 1697 #ifdef __NetBSD__ 1698 newrule->cuid = kauth_cred_getuid(l->l_cred); 1699 newrule->cpid = l->l_proc->p_pid; 1700 #else 1701 newrule->cuid = p->p_cred->p_ruid; 1702 newrule->cpid = p->p_pid; 1703 #endif /* !__NetBSD__ */ 1704 TAILQ_INIT(&newrule->rpool.list); 1705 /* initialize refcounting */ 1706 newrule->states = 0; 1707 newrule->entries.tqe_prev = NULL; 1708 #ifndef INET 1709 if (newrule->af == AF_INET) { 1710 pool_put(&pf_rule_pl, newrule); 1711 error = EAFNOSUPPORT; 1712 break; 1713 } 1714 #endif /* INET */ 1715 #ifndef INET6 1716 if (newrule->af == AF_INET6) { 1717 pool_put(&pf_rule_pl, newrule); 1718 error = EAFNOSUPPORT; 1719 break; 1720 } 1721 #endif /* INET6 */ 1722 if (newrule->ifname[0]) { 1723 newrule->kif = pfi_kif_get(newrule->ifname); 1724 if (newrule->kif == NULL) { 1725 pool_put(&pf_rule_pl, newrule); 1726 error = EINVAL; 1727 break; 1728 } 1729 pfi_kif_ref(newrule->kif, PFI_KIF_REF_RULE); 1730 } else 1731 newrule->kif = NULL; 1732 1733 #ifndef __NetBSD__ 1734 if (newrule->rtableid > 0 && 1735 !rtable_exists(newrule->rtableid)) 1736 error = EBUSY; 1737 #endif /* !__NetBSD__ */ 1738 1739 #ifdef ALTQ 1740 /* set queue IDs */ 1741 if (newrule->qname[0] != 0) { 1742 if ((newrule->qid = 1743 pf_qname2qid(newrule->qname)) == 0) 1744 error = EBUSY; 1745 else if (newrule->pqname[0] != 0) { 1746 if ((newrule->pqid = 1747 pf_qname2qid(newrule->pqname)) == 0) 1748 error = EBUSY; 1749 } else 1750 newrule->pqid = newrule->qid; 1751 } 1752 #endif /* ALTQ */ 1753 if (newrule->tagname[0]) 1754 if ((newrule->tag = 1755 pf_tagname2tag(newrule->tagname)) == 0) 1756 error = EBUSY; 1757 if (newrule->match_tagname[0]) 1758 if ((newrule->match_tag = pf_tagname2tag( 1759 newrule->match_tagname)) == 0) 1760 error = EBUSY; 1761 if (newrule->rt && !newrule->direction) 1762 error = EINVAL; 1763 #if NPFLOG > 0 1764 if (!newrule->log) 1765 newrule->logif = 0; 1766 if (newrule->logif >= PFLOGIFS_MAX) 1767 error = EINVAL; 1768 #endif 1769 if (pf_rtlabel_add(&newrule->src.addr) || 1770 pf_rtlabel_add(&newrule->dst.addr)) 1771 error = EBUSY; 1772 if (pfi_dynaddr_setup(&newrule->src.addr, newrule->af)) 1773 error = EINVAL; 1774 if (pfi_dynaddr_setup(&newrule->dst.addr, newrule->af)) 1775 error = EINVAL; 1776 if (pf_tbladdr_setup(ruleset, &newrule->src.addr)) 1777 error = EINVAL; 1778 if (pf_tbladdr_setup(ruleset, &newrule->dst.addr)) 1779 error = EINVAL; 1780 if (pf_anchor_setup(newrule, ruleset, pcr->anchor_call)) 1781 error = EINVAL; 1782 TAILQ_FOREACH(pa, &pf_pabuf, entries) 1783 if (pf_tbladdr_setup(ruleset, &pa->addr)) 1784 error = EINVAL; 1785 1786 newrule->overload_tbl = NULL; 1787 if (newrule->overload_tblname[0]) { 1788 if ((newrule->overload_tbl = pfr_attach_table( 1789 ruleset, newrule->overload_tblname)) == 1790 NULL) 1791 error = EINVAL; 1792 else 1793 newrule->overload_tbl->pfrkt_flags |= 1794 PFR_TFLAG_ACTIVE; 1795 } 1796 1797 pf_mv_pool(&pf_pabuf, &newrule->rpool.list); 1798 if (((((newrule->action == PF_NAT) || 1799 (newrule->action == PF_RDR) || 1800 (newrule->action == PF_BINAT) || 1801 (newrule->rt > PF_FASTROUTE)) && 1802 !newrule->anchor)) && 1803 (TAILQ_FIRST(&newrule->rpool.list) == NULL)) 1804 error = EINVAL; 1805 1806 if (error) { 1807 pf_rm_rule(NULL, newrule); 1808 break; 1809 } 1810 newrule->rpool.cur = TAILQ_FIRST(&newrule->rpool.list); 1811 newrule->evaluations = 0; 1812 newrule->packets[0] = newrule->packets[1] = 0; 1813 newrule->bytes[0] = newrule->bytes[1] = 0; 1814 } 1815 pf_empty_pool(&pf_pabuf); 1816 1817 if (pcr->action == PF_CHANGE_ADD_HEAD) 1818 oldrule = TAILQ_FIRST( 1819 ruleset->rules[rs_num].active.ptr); 1820 else if (pcr->action == PF_CHANGE_ADD_TAIL) 1821 oldrule = TAILQ_LAST( 1822 ruleset->rules[rs_num].active.ptr, pf_rulequeue); 1823 else { 1824 oldrule = TAILQ_FIRST( 1825 ruleset->rules[rs_num].active.ptr); 1826 while ((oldrule != NULL) && (oldrule->nr != pcr->nr)) 1827 oldrule = TAILQ_NEXT(oldrule, entries); 1828 if (oldrule == NULL) { 1829 if (newrule != NULL) 1830 pf_rm_rule(NULL, newrule); 1831 error = EINVAL; 1832 break; 1833 } 1834 } 1835 1836 if (pcr->action == PF_CHANGE_REMOVE) { 1837 pf_rm_rule(ruleset->rules[rs_num].active.ptr, oldrule); 1838 ruleset->rules[rs_num].active.rcount--; 1839 } else { 1840 if (oldrule == NULL) 1841 TAILQ_INSERT_TAIL( 1842 ruleset->rules[rs_num].active.ptr, 1843 newrule, entries); 1844 else if (pcr->action == PF_CHANGE_ADD_HEAD || 1845 pcr->action == PF_CHANGE_ADD_BEFORE) 1846 TAILQ_INSERT_BEFORE(oldrule, newrule, entries); 1847 else 1848 TAILQ_INSERT_AFTER( 1849 ruleset->rules[rs_num].active.ptr, 1850 oldrule, newrule, entries); 1851 ruleset->rules[rs_num].active.rcount++; 1852 } 1853 1854 nr = 0; 1855 TAILQ_FOREACH(oldrule, 1856 ruleset->rules[rs_num].active.ptr, entries) 1857 oldrule->nr = nr++; 1858 1859 ruleset->rules[rs_num].active.ticket++; 1860 1861 pf_calc_skip_steps(ruleset->rules[rs_num].active.ptr); 1862 pf_remove_if_empty_ruleset(ruleset); 1863 1864 break; 1865 } 1866 1867 case DIOCCLRSTATES: { 1868 struct pf_state *ps, *nexts; 1869 struct pfioc_state_kill *psk = (struct pfioc_state_kill *)addr; 1870 int killed = 0; 1871 1872 for (ps = RB_MIN(pf_state_tree_id, &tree_id); ps; ps = nexts) { 1873 nexts = RB_NEXT(pf_state_tree_id, &tree_id, ps); 1874 1875 if (!psk->psk_ifname[0] || !strcmp(psk->psk_ifname, 1876 ps->kif->pfik_name)) { 1877 #if NPFSYNC 1878 /* don't send out individual delete messages */ 1879 ps->sync_flags = PFSTATE_NOSYNC; 1880 #endif 1881 pf_unlink_state(ps); 1882 killed++; 1883 } 1884 } 1885 psk->psk_af = killed; 1886 #if NPFSYNC 1887 pfsync_clear_states(pf_status.hostid, psk->psk_ifname); 1888 #endif 1889 break; 1890 } 1891 1892 case DIOCKILLSTATES: { 1893 struct pf_state *ps, *nexts; 1894 struct pf_state_key *sk; 1895 struct pf_state_host *src, *dst; 1896 struct pfioc_state_kill *psk = (struct pfioc_state_kill *)addr; 1897 int killed = 0; 1898 1899 for (ps = RB_MIN(pf_state_tree_id, &tree_id); ps; 1900 ps = nexts) { 1901 nexts = RB_NEXT(pf_state_tree_id, &tree_id, ps); 1902 sk = ps->state_key; 1903 1904 if (sk->direction == PF_OUT) { 1905 src = &sk->lan; 1906 dst = &sk->ext; 1907 } else { 1908 src = &sk->ext; 1909 dst = &sk->lan; 1910 } 1911 if ((!psk->psk_af || sk->af == psk->psk_af) 1912 && (!psk->psk_proto || psk->psk_proto == 1913 sk->proto) && 1914 PF_MATCHA(psk->psk_src.neg, 1915 &psk->psk_src.addr.v.a.addr, 1916 &psk->psk_src.addr.v.a.mask, 1917 &src->addr, sk->af) && 1918 PF_MATCHA(psk->psk_dst.neg, 1919 &psk->psk_dst.addr.v.a.addr, 1920 &psk->psk_dst.addr.v.a.mask, 1921 &dst->addr, sk->af) && 1922 (psk->psk_src.port_op == 0 || 1923 pf_match_port(psk->psk_src.port_op, 1924 psk->psk_src.port[0], psk->psk_src.port[1], 1925 src->port)) && 1926 (psk->psk_dst.port_op == 0 || 1927 pf_match_port(psk->psk_dst.port_op, 1928 psk->psk_dst.port[0], psk->psk_dst.port[1], 1929 dst->port)) && 1930 (!psk->psk_ifname[0] || !strcmp(psk->psk_ifname, 1931 ps->kif->pfik_name))) { 1932 #if NPFSYNC > 0 1933 /* send immediate delete of state */ 1934 pfsync_delete_state(ps); 1935 ps->sync_flags |= PFSTATE_NOSYNC; 1936 #endif 1937 pf_unlink_state(ps); 1938 killed++; 1939 } 1940 } 1941 psk->psk_af = killed; 1942 break; 1943 } 1944 1945 case DIOCADDSTATE: { 1946 struct pfioc_state *ps = (struct pfioc_state *)addr; 1947 struct pfsync_state *sp = (struct pfsync_state *)ps->state; 1948 1949 error = pf_state_add(sp); 1950 break; 1951 } 1952 1953 case DIOCADDSTATES: { 1954 struct pfioc_states *ps = (struct pfioc_states *)addr; 1955 struct pfsync_state *p = (struct pfsync_state *) ps->ps_states; 1956 struct pfsync_state *pk; 1957 int size = ps->ps_len; 1958 int i = 0; 1959 error = 0; 1960 1961 pk = malloc(sizeof(*pk), M_TEMP,M_WAITOK); 1962 1963 while (error == 0 && i < size) 1964 { 1965 if (copyin(p, pk, sizeof(struct pfsync_state))) 1966 { 1967 error = EFAULT; 1968 free(pk, M_TEMP); 1969 } else { 1970 error = pf_state_add(pk); 1971 i += sizeof(*p); 1972 p++; 1973 } 1974 } 1975 1976 free(pk, M_TEMP); 1977 break; 1978 } 1979 1980 1981 case DIOCGETSTATE: { 1982 struct pfioc_state *ps = (struct pfioc_state *)addr; 1983 struct pf_state *pfs; 1984 u_int32_t nr; 1985 1986 nr = 0; 1987 RB_FOREACH(pfs, pf_state_tree_id, &tree_id) { 1988 if (nr >= ps->nr) 1989 break; 1990 nr++; 1991 } 1992 if (pfs == NULL) { 1993 error = EBUSY; 1994 break; 1995 } 1996 1997 pf_state_export((struct pfsync_state *)&ps->state, 1998 pfs->state_key, pfs); 1999 break; 2000 } 2001 2002 case DIOCGETSTATES: { 2003 struct pfioc_states *ps = (struct pfioc_states *)addr; 2004 struct pf_state *state; 2005 struct pfsync_state *p, *pstore; 2006 u_int32_t nr = 0; 2007 2008 if (ps->ps_len == 0) { 2009 nr = pf_status.states; 2010 ps->ps_len = sizeof(struct pfsync_state) * nr; 2011 break; 2012 } 2013 2014 pstore = malloc(sizeof(*pstore), M_TEMP, M_WAITOK); 2015 2016 p = ps->ps_states; 2017 2018 state = TAILQ_FIRST(&state_list); 2019 while (state) { 2020 if (state->timeout != PFTM_UNLINKED) { 2021 if ((nr+1) * sizeof(*p) > (unsigned)ps->ps_len) 2022 break; 2023 2024 pf_state_export(pstore, 2025 state->state_key, state); 2026 error = copyout(pstore, p, sizeof(*p)); 2027 if (error) { 2028 free(pstore, M_TEMP); 2029 goto fail; 2030 } 2031 p++; 2032 nr++; 2033 } 2034 state = TAILQ_NEXT(state, entry_list); 2035 } 2036 2037 ps->ps_len = sizeof(struct pfsync_state) * nr; 2038 2039 free(pstore, M_TEMP); 2040 break; 2041 } 2042 2043 case DIOCGETSTATUS: { 2044 struct pf_status *ps = (struct pf_status *)addr; 2045 bcopy(&pf_status, ps, sizeof(struct pf_status)); 2046 pfi_fill_oldstatus(ps); 2047 break; 2048 } 2049 2050 case DIOCSETSTATUSIF: { 2051 struct pfioc_if *pi = (struct pfioc_if *)addr; 2052 2053 if (pi->ifname[0] == 0) { 2054 bzero(pf_status.ifname, IFNAMSIZ); 2055 break; 2056 } 2057 if (ifunit(pi->ifname) == NULL) { 2058 error = EINVAL; 2059 break; 2060 } 2061 strlcpy(pf_status.ifname, pi->ifname, IFNAMSIZ); 2062 break; 2063 } 2064 2065 case DIOCCLRSTATUS: { 2066 bzero(pf_status.counters, sizeof(pf_status.counters)); 2067 bzero(pf_status.fcounters, sizeof(pf_status.fcounters)); 2068 bzero(pf_status.scounters, sizeof(pf_status.scounters)); 2069 pf_status.since = time_second; 2070 if (*pf_status.ifname) 2071 pfi_clr_istats(pf_status.ifname); 2072 break; 2073 } 2074 2075 case DIOCNATLOOK: { 2076 struct pfioc_natlook *pnl = (struct pfioc_natlook *)addr; 2077 struct pf_state_key *sk; 2078 struct pf_state *state; 2079 struct pf_state_key_cmp key; 2080 int m = 0, direction = pnl->direction; 2081 2082 key.af = pnl->af; 2083 key.proto = pnl->proto; 2084 2085 if (!pnl->proto || 2086 PF_AZERO(&pnl->saddr, pnl->af) || 2087 PF_AZERO(&pnl->daddr, pnl->af) || 2088 ((pnl->proto == IPPROTO_TCP || 2089 pnl->proto == IPPROTO_UDP) && 2090 (!pnl->dport || !pnl->sport))) 2091 error = EINVAL; 2092 else { 2093 /* 2094 * userland gives us source and dest of connection, 2095 * reverse the lookup so we ask for what happens with 2096 * the return traffic, enabling us to find it in the 2097 * state tree. 2098 */ 2099 if (direction == PF_IN) { 2100 PF_ACPY(&key.ext.addr, &pnl->daddr, pnl->af); 2101 key.ext.port = pnl->dport; 2102 PF_ACPY(&key.gwy.addr, &pnl->saddr, pnl->af); 2103 key.gwy.port = pnl->sport; 2104 state = pf_find_state_all(&key, PF_EXT_GWY, &m); 2105 } else { 2106 PF_ACPY(&key.lan.addr, &pnl->daddr, pnl->af); 2107 key.lan.port = pnl->dport; 2108 PF_ACPY(&key.ext.addr, &pnl->saddr, pnl->af); 2109 key.ext.port = pnl->sport; 2110 state = pf_find_state_all(&key, PF_LAN_EXT, &m); 2111 } 2112 if (m > 1) 2113 error = E2BIG; /* more than one state */ 2114 else if (state != NULL) { 2115 sk = state->state_key; 2116 if (direction == PF_IN) { 2117 PF_ACPY(&pnl->rsaddr, &sk->lan.addr, 2118 sk->af); 2119 pnl->rsport = sk->lan.port; 2120 PF_ACPY(&pnl->rdaddr, &pnl->daddr, 2121 pnl->af); 2122 pnl->rdport = pnl->dport; 2123 } else { 2124 PF_ACPY(&pnl->rdaddr, &sk->gwy.addr, 2125 sk->af); 2126 pnl->rdport = sk->gwy.port; 2127 PF_ACPY(&pnl->rsaddr, &pnl->saddr, 2128 pnl->af); 2129 pnl->rsport = pnl->sport; 2130 } 2131 } else 2132 error = ENOENT; 2133 } 2134 break; 2135 } 2136 2137 case DIOCSETTIMEOUT: { 2138 struct pfioc_tm *pt = (struct pfioc_tm *)addr; 2139 int old; 2140 2141 if (pt->timeout < 0 || pt->timeout >= PFTM_MAX || 2142 pt->seconds < 0) { 2143 error = EINVAL; 2144 goto fail; 2145 } 2146 old = pf_default_rule.timeout[pt->timeout]; 2147 if (pt->timeout == PFTM_INTERVAL && pt->seconds == 0) 2148 pt->seconds = 1; 2149 pf_default_rule.timeout[pt->timeout] = pt->seconds; 2150 if (pt->timeout == PFTM_INTERVAL && pt->seconds < old) 2151 wakeup(pf_purge_thread); 2152 pt->seconds = old; 2153 break; 2154 } 2155 2156 case DIOCGETTIMEOUT: { 2157 struct pfioc_tm *pt = (struct pfioc_tm *)addr; 2158 2159 if (pt->timeout < 0 || pt->timeout >= PFTM_MAX) { 2160 error = EINVAL; 2161 goto fail; 2162 } 2163 pt->seconds = pf_default_rule.timeout[pt->timeout]; 2164 break; 2165 } 2166 2167 case DIOCGETLIMIT: { 2168 struct pfioc_limit *pl = (struct pfioc_limit *)addr; 2169 2170 if (pl->index < 0 || pl->index >= PF_LIMIT_MAX) { 2171 error = EINVAL; 2172 goto fail; 2173 } 2174 pl->limit = pf_pool_limits[pl->index].limit; 2175 break; 2176 } 2177 2178 case DIOCSETLIMIT: { 2179 struct pfioc_limit *pl = (struct pfioc_limit *)addr; 2180 int old_limit; 2181 2182 if (pl->index < 0 || pl->index >= PF_LIMIT_MAX || 2183 pf_pool_limits[pl->index].pp == NULL) { 2184 error = EINVAL; 2185 goto fail; 2186 } 2187 #ifdef __NetBSD__ 2188 pool_sethardlimit(pf_pool_limits[pl->index].pp, 2189 pl->limit, NULL, 0); 2190 #else 2191 if (pool_sethardlimit(pf_pool_limits[pl->index].pp, 2192 pl->limit, NULL, 0) != 0) { 2193 error = EBUSY; 2194 goto fail; 2195 } 2196 #endif /* !__NetBSD__ */ 2197 old_limit = pf_pool_limits[pl->index].limit; 2198 pf_pool_limits[pl->index].limit = pl->limit; 2199 pl->limit = old_limit; 2200 break; 2201 } 2202 2203 case DIOCSETDEBUG: { 2204 u_int32_t *level = (u_int32_t *)addr; 2205 2206 pf_status.debug = *level; 2207 break; 2208 } 2209 2210 case DIOCCLRRULECTRS: { 2211 /* obsoleted by DIOCGETRULE with action=PF_GET_CLR_CNTR */ 2212 struct pf_ruleset *ruleset = &pf_main_ruleset; 2213 struct pf_rule *rule; 2214 2215 TAILQ_FOREACH(rule, 2216 ruleset->rules[PF_RULESET_FILTER].active.ptr, entries) { 2217 rule->evaluations = 0; 2218 rule->packets[0] = rule->packets[1] = 0; 2219 rule->bytes[0] = rule->bytes[1] = 0; 2220 } 2221 break; 2222 } 2223 2224 #ifdef ALTQ 2225 case DIOCSTARTALTQ: { 2226 struct pf_altq *altq; 2227 2228 /* enable all altq interfaces on active list */ 2229 TAILQ_FOREACH(altq, pf_altqs_active, entries) { 2230 if (altq->qname[0] == 0) { 2231 error = pf_enable_altq(altq); 2232 if (error != 0) 2233 break; 2234 } 2235 } 2236 if (error == 0) 2237 pf_altq_running = 1; 2238 DPFPRINTF(PF_DEBUG_MISC, ("altq: started\n")); 2239 break; 2240 } 2241 2242 case DIOCSTOPALTQ: { 2243 struct pf_altq *altq; 2244 2245 /* disable all altq interfaces on active list */ 2246 TAILQ_FOREACH(altq, pf_altqs_active, entries) { 2247 if (altq->qname[0] == 0) { 2248 error = pf_disable_altq(altq); 2249 if (error != 0) 2250 break; 2251 } 2252 } 2253 if (error == 0) 2254 pf_altq_running = 0; 2255 DPFPRINTF(PF_DEBUG_MISC, ("altq: stopped\n")); 2256 break; 2257 } 2258 2259 case DIOCADDALTQ: { 2260 struct pfioc_altq *paa = (struct pfioc_altq *)addr; 2261 struct pf_altq *altq, *a; 2262 2263 if (paa->ticket != ticket_altqs_inactive) { 2264 error = EBUSY; 2265 break; 2266 } 2267 altq = pool_get(&pf_altq_pl, PR_NOWAIT); 2268 if (altq == NULL) { 2269 error = ENOMEM; 2270 break; 2271 } 2272 bcopy(&paa->altq, altq, sizeof(struct pf_altq)); 2273 2274 /* 2275 * if this is for a queue, find the discipline and 2276 * copy the necessary fields 2277 */ 2278 if (altq->qname[0] != 0) { 2279 if ((altq->qid = pf_qname2qid(altq->qname)) == 0) { 2280 error = EBUSY; 2281 pool_put(&pf_altq_pl, altq); 2282 break; 2283 } 2284 TAILQ_FOREACH(a, pf_altqs_inactive, entries) { 2285 if (strncmp(a->ifname, altq->ifname, 2286 IFNAMSIZ) == 0 && a->qname[0] == 0) { 2287 altq->altq_disc = a->altq_disc; 2288 break; 2289 } 2290 } 2291 } 2292 2293 error = altq_add(altq); 2294 if (error) { 2295 pool_put(&pf_altq_pl, altq); 2296 break; 2297 } 2298 2299 TAILQ_INSERT_TAIL(pf_altqs_inactive, altq, entries); 2300 bcopy(altq, &paa->altq, sizeof(struct pf_altq)); 2301 break; 2302 } 2303 2304 case DIOCGETALTQS: { 2305 struct pfioc_altq *paa = (struct pfioc_altq *)addr; 2306 struct pf_altq *altq; 2307 2308 paa->nr = 0; 2309 TAILQ_FOREACH(altq, pf_altqs_active, entries) 2310 paa->nr++; 2311 paa->ticket = ticket_altqs_active; 2312 break; 2313 } 2314 2315 case DIOCGETALTQ: { 2316 struct pfioc_altq *paa = (struct pfioc_altq *)addr; 2317 struct pf_altq *altq; 2318 u_int32_t nr; 2319 2320 if (paa->ticket != ticket_altqs_active) { 2321 error = EBUSY; 2322 break; 2323 } 2324 nr = 0; 2325 altq = TAILQ_FIRST(pf_altqs_active); 2326 while ((altq != NULL) && (nr < paa->nr)) { 2327 altq = TAILQ_NEXT(altq, entries); 2328 nr++; 2329 } 2330 if (altq == NULL) { 2331 error = EBUSY; 2332 break; 2333 } 2334 bcopy(altq, &paa->altq, sizeof(struct pf_altq)); 2335 break; 2336 } 2337 2338 case DIOCCHANGEALTQ: 2339 /* CHANGEALTQ not supported yet! */ 2340 error = ENODEV; 2341 break; 2342 2343 case DIOCGETQSTATS: { 2344 struct pfioc_qstats *pq = (struct pfioc_qstats *)addr; 2345 struct pf_altq *altq; 2346 u_int32_t nr; 2347 int nbytes; 2348 2349 if (pq->ticket != ticket_altqs_active) { 2350 error = EBUSY; 2351 break; 2352 } 2353 nbytes = pq->nbytes; 2354 nr = 0; 2355 altq = TAILQ_FIRST(pf_altqs_active); 2356 while ((altq != NULL) && (nr < pq->nr)) { 2357 altq = TAILQ_NEXT(altq, entries); 2358 nr++; 2359 } 2360 if (altq == NULL) { 2361 error = EBUSY; 2362 break; 2363 } 2364 error = altq_getqstats(altq, pq->buf, &nbytes); 2365 if (error == 0) { 2366 pq->scheduler = altq->scheduler; 2367 pq->nbytes = nbytes; 2368 } 2369 break; 2370 } 2371 #endif /* ALTQ */ 2372 2373 case DIOCBEGINADDRS: { 2374 struct pfioc_pooladdr *pp = (struct pfioc_pooladdr *)addr; 2375 2376 pf_empty_pool(&pf_pabuf); 2377 pp->ticket = ++ticket_pabuf; 2378 break; 2379 } 2380 2381 case DIOCADDADDR: { 2382 struct pfioc_pooladdr *pp = (struct pfioc_pooladdr *)addr; 2383 2384 if (pp->ticket != ticket_pabuf) { 2385 error = EBUSY; 2386 break; 2387 } 2388 #ifndef INET 2389 if (pp->af == AF_INET) { 2390 error = EAFNOSUPPORT; 2391 break; 2392 } 2393 #endif /* INET */ 2394 #ifndef INET6 2395 if (pp->af == AF_INET6) { 2396 error = EAFNOSUPPORT; 2397 break; 2398 } 2399 #endif /* INET6 */ 2400 if (pp->addr.addr.type != PF_ADDR_ADDRMASK && 2401 pp->addr.addr.type != PF_ADDR_DYNIFTL && 2402 pp->addr.addr.type != PF_ADDR_TABLE) { 2403 error = EINVAL; 2404 break; 2405 } 2406 pa = pool_get(&pf_pooladdr_pl, PR_NOWAIT); 2407 if (pa == NULL) { 2408 error = ENOMEM; 2409 break; 2410 } 2411 bcopy(&pp->addr, pa, sizeof(struct pf_pooladdr)); 2412 if (pa->ifname[0]) { 2413 pa->kif = pfi_kif_get(pa->ifname); 2414 if (pa->kif == NULL) { 2415 pool_put(&pf_pooladdr_pl, pa); 2416 error = EINVAL; 2417 break; 2418 } 2419 pfi_kif_ref(pa->kif, PFI_KIF_REF_RULE); 2420 } 2421 if (pfi_dynaddr_setup(&pa->addr, pp->af)) { 2422 pfi_dynaddr_remove(&pa->addr); 2423 pfi_kif_unref(pa->kif, PFI_KIF_REF_RULE); 2424 pool_put(&pf_pooladdr_pl, pa); 2425 error = EINVAL; 2426 break; 2427 } 2428 TAILQ_INSERT_TAIL(&pf_pabuf, pa, entries); 2429 break; 2430 } 2431 2432 case DIOCGETADDRS: { 2433 struct pfioc_pooladdr *pp = (struct pfioc_pooladdr *)addr; 2434 2435 pp->nr = 0; 2436 pool = pf_get_pool(pp->anchor, pp->ticket, pp->r_action, 2437 pp->r_num, 0, 1, 0); 2438 if (pool == NULL) { 2439 error = EBUSY; 2440 break; 2441 } 2442 TAILQ_FOREACH(pa, &pool->list, entries) 2443 pp->nr++; 2444 break; 2445 } 2446 2447 case DIOCGETADDR: { 2448 struct pfioc_pooladdr *pp = (struct pfioc_pooladdr *)addr; 2449 u_int32_t nr = 0; 2450 2451 pool = pf_get_pool(pp->anchor, pp->ticket, pp->r_action, 2452 pp->r_num, 0, 1, 1); 2453 if (pool == NULL) { 2454 error = EBUSY; 2455 break; 2456 } 2457 pa = TAILQ_FIRST(&pool->list); 2458 while ((pa != NULL) && (nr < pp->nr)) { 2459 pa = TAILQ_NEXT(pa, entries); 2460 nr++; 2461 } 2462 if (pa == NULL) { 2463 error = EBUSY; 2464 break; 2465 } 2466 bcopy(pa, &pp->addr, sizeof(struct pf_pooladdr)); 2467 pfi_dynaddr_copyout(&pp->addr.addr); 2468 pf_tbladdr_copyout(&pp->addr.addr); 2469 pf_rtlabel_copyout(&pp->addr.addr); 2470 break; 2471 } 2472 2473 case DIOCCHANGEADDR: { 2474 struct pfioc_pooladdr *pca = (struct pfioc_pooladdr *)addr; 2475 struct pf_pooladdr *oldpa = NULL, *newpa = NULL; 2476 struct pf_ruleset *ruleset; 2477 2478 if (pca->action < PF_CHANGE_ADD_HEAD || 2479 pca->action > PF_CHANGE_REMOVE) { 2480 error = EINVAL; 2481 break; 2482 } 2483 if (pca->addr.addr.type != PF_ADDR_ADDRMASK && 2484 pca->addr.addr.type != PF_ADDR_DYNIFTL && 2485 pca->addr.addr.type != PF_ADDR_TABLE) { 2486 error = EINVAL; 2487 break; 2488 } 2489 2490 ruleset = pf_find_ruleset(pca->anchor); 2491 if (ruleset == NULL) { 2492 error = EBUSY; 2493 break; 2494 } 2495 pool = pf_get_pool(pca->anchor, pca->ticket, pca->r_action, 2496 pca->r_num, pca->r_last, 1, 1); 2497 if (pool == NULL) { 2498 error = EBUSY; 2499 break; 2500 } 2501 if (pca->action != PF_CHANGE_REMOVE) { 2502 newpa = pool_get(&pf_pooladdr_pl, PR_NOWAIT); 2503 if (newpa == NULL) { 2504 error = ENOMEM; 2505 break; 2506 } 2507 bcopy(&pca->addr, newpa, sizeof(struct pf_pooladdr)); 2508 #ifndef INET 2509 if (pca->af == AF_INET) { 2510 pool_put(&pf_pooladdr_pl, newpa); 2511 error = EAFNOSUPPORT; 2512 break; 2513 } 2514 #endif /* INET */ 2515 #ifndef INET6 2516 if (pca->af == AF_INET6) { 2517 pool_put(&pf_pooladdr_pl, newpa); 2518 error = EAFNOSUPPORT; 2519 break; 2520 } 2521 #endif /* INET6 */ 2522 if (newpa->ifname[0]) { 2523 newpa->kif = pfi_kif_get(newpa->ifname); 2524 if (newpa->kif == NULL) { 2525 pool_put(&pf_pooladdr_pl, newpa); 2526 error = EINVAL; 2527 break; 2528 } 2529 pfi_kif_ref(newpa->kif, PFI_KIF_REF_RULE); 2530 } else 2531 newpa->kif = NULL; 2532 if (pfi_dynaddr_setup(&newpa->addr, pca->af) || 2533 pf_tbladdr_setup(ruleset, &newpa->addr)) { 2534 pfi_dynaddr_remove(&newpa->addr); 2535 pfi_kif_unref(newpa->kif, PFI_KIF_REF_RULE); 2536 pool_put(&pf_pooladdr_pl, newpa); 2537 error = EINVAL; 2538 break; 2539 } 2540 } 2541 2542 if (pca->action == PF_CHANGE_ADD_HEAD) 2543 oldpa = TAILQ_FIRST(&pool->list); 2544 else if (pca->action == PF_CHANGE_ADD_TAIL) 2545 oldpa = TAILQ_LAST(&pool->list, pf_palist); 2546 else { 2547 int i = 0; 2548 2549 oldpa = TAILQ_FIRST(&pool->list); 2550 while ((oldpa != NULL) && (i < pca->nr)) { 2551 oldpa = TAILQ_NEXT(oldpa, entries); 2552 i++; 2553 } 2554 if (oldpa == NULL) { 2555 error = EINVAL; 2556 break; 2557 } 2558 } 2559 2560 if (pca->action == PF_CHANGE_REMOVE) { 2561 TAILQ_REMOVE(&pool->list, oldpa, entries); 2562 pfi_dynaddr_remove(&oldpa->addr); 2563 pf_tbladdr_remove(&oldpa->addr); 2564 pfi_kif_unref(oldpa->kif, PFI_KIF_REF_RULE); 2565 pool_put(&pf_pooladdr_pl, oldpa); 2566 } else { 2567 if (oldpa == NULL) 2568 TAILQ_INSERT_TAIL(&pool->list, newpa, entries); 2569 else if (pca->action == PF_CHANGE_ADD_HEAD || 2570 pca->action == PF_CHANGE_ADD_BEFORE) 2571 TAILQ_INSERT_BEFORE(oldpa, newpa, entries); 2572 else 2573 TAILQ_INSERT_AFTER(&pool->list, oldpa, 2574 newpa, entries); 2575 } 2576 2577 pool->cur = TAILQ_FIRST(&pool->list); 2578 PF_ACPY(&pool->counter, &pool->cur->addr.v.a.addr, 2579 pca->af); 2580 break; 2581 } 2582 2583 case DIOCGETRULESETS: { 2584 struct pfioc_ruleset *pr = (struct pfioc_ruleset *)addr; 2585 struct pf_ruleset *ruleset; 2586 struct pf_anchor *anchor; 2587 2588 pr->path[sizeof(pr->path) - 1] = 0; 2589 if ((ruleset = pf_find_ruleset(pr->path)) == NULL) { 2590 error = EINVAL; 2591 break; 2592 } 2593 pr->nr = 0; 2594 if (ruleset->anchor == NULL) { 2595 /* XXX kludge for pf_main_ruleset */ 2596 RB_FOREACH(anchor, pf_anchor_global, &pf_anchors) 2597 if (anchor->parent == NULL) 2598 pr->nr++; 2599 } else { 2600 RB_FOREACH(anchor, pf_anchor_node, 2601 &ruleset->anchor->children) 2602 pr->nr++; 2603 } 2604 break; 2605 } 2606 2607 case DIOCGETRULESET: { 2608 struct pfioc_ruleset *pr = (struct pfioc_ruleset *)addr; 2609 struct pf_ruleset *ruleset; 2610 struct pf_anchor *anchor; 2611 u_int32_t nr = 0; 2612 2613 pr->path[sizeof(pr->path) - 1] = 0; 2614 if ((ruleset = pf_find_ruleset(pr->path)) == NULL) { 2615 error = EINVAL; 2616 break; 2617 } 2618 pr->name[0] = 0; 2619 if (ruleset->anchor == NULL) { 2620 /* XXX kludge for pf_main_ruleset */ 2621 RB_FOREACH(anchor, pf_anchor_global, &pf_anchors) 2622 if (anchor->parent == NULL && nr++ == pr->nr) { 2623 strlcpy(pr->name, anchor->name, 2624 sizeof(pr->name)); 2625 break; 2626 } 2627 } else { 2628 RB_FOREACH(anchor, pf_anchor_node, 2629 &ruleset->anchor->children) 2630 if (nr++ == pr->nr) { 2631 strlcpy(pr->name, anchor->name, 2632 sizeof(pr->name)); 2633 break; 2634 } 2635 } 2636 if (!pr->name[0]) 2637 error = EBUSY; 2638 break; 2639 } 2640 2641 case DIOCRCLRTABLES: { 2642 struct pfioc_table *io = (struct pfioc_table *)addr; 2643 2644 if (io->pfrio_esize != 0) { 2645 error = ENODEV; 2646 break; 2647 } 2648 error = pfr_clr_tables(&io->pfrio_table, &io->pfrio_ndel, 2649 io->pfrio_flags | PFR_FLAG_USERIOCTL); 2650 break; 2651 } 2652 2653 case DIOCRADDTABLES: { 2654 struct pfioc_table *io = (struct pfioc_table *)addr; 2655 2656 if (io->pfrio_esize != sizeof(struct pfr_table)) { 2657 error = ENODEV; 2658 break; 2659 } 2660 error = pfr_add_tables(io->pfrio_buffer, io->pfrio_size, 2661 &io->pfrio_nadd, io->pfrio_flags | PFR_FLAG_USERIOCTL); 2662 break; 2663 } 2664 2665 case DIOCRDELTABLES: { 2666 struct pfioc_table *io = (struct pfioc_table *)addr; 2667 2668 if (io->pfrio_esize != sizeof(struct pfr_table)) { 2669 error = ENODEV; 2670 break; 2671 } 2672 error = pfr_del_tables(io->pfrio_buffer, io->pfrio_size, 2673 &io->pfrio_ndel, io->pfrio_flags | PFR_FLAG_USERIOCTL); 2674 break; 2675 } 2676 2677 case DIOCRGETTABLES: { 2678 struct pfioc_table *io = (struct pfioc_table *)addr; 2679 2680 if (io->pfrio_esize != sizeof(struct pfr_table)) { 2681 error = ENODEV; 2682 break; 2683 } 2684 error = pfr_get_tables(&io->pfrio_table, io->pfrio_buffer, 2685 &io->pfrio_size, io->pfrio_flags | PFR_FLAG_USERIOCTL); 2686 break; 2687 } 2688 2689 case DIOCRGETTSTATS: { 2690 struct pfioc_table *io = (struct pfioc_table *)addr; 2691 2692 if (io->pfrio_esize != sizeof(struct pfr_tstats)) { 2693 error = ENODEV; 2694 break; 2695 } 2696 error = pfr_get_tstats(&io->pfrio_table, io->pfrio_buffer, 2697 &io->pfrio_size, io->pfrio_flags | PFR_FLAG_USERIOCTL); 2698 break; 2699 } 2700 2701 case DIOCRCLRTSTATS: { 2702 struct pfioc_table *io = (struct pfioc_table *)addr; 2703 2704 if (io->pfrio_esize != sizeof(struct pfr_table)) { 2705 error = ENODEV; 2706 break; 2707 } 2708 error = pfr_clr_tstats(io->pfrio_buffer, io->pfrio_size, 2709 &io->pfrio_nzero, io->pfrio_flags | PFR_FLAG_USERIOCTL); 2710 break; 2711 } 2712 2713 case DIOCRSETTFLAGS: { 2714 struct pfioc_table *io = (struct pfioc_table *)addr; 2715 2716 if (io->pfrio_esize != sizeof(struct pfr_table)) { 2717 error = ENODEV; 2718 break; 2719 } 2720 error = pfr_set_tflags(io->pfrio_buffer, io->pfrio_size, 2721 io->pfrio_setflag, io->pfrio_clrflag, &io->pfrio_nchange, 2722 &io->pfrio_ndel, io->pfrio_flags | PFR_FLAG_USERIOCTL); 2723 break; 2724 } 2725 2726 case DIOCRCLRADDRS: { 2727 struct pfioc_table *io = (struct pfioc_table *)addr; 2728 2729 if (io->pfrio_esize != 0) { 2730 error = ENODEV; 2731 break; 2732 } 2733 error = pfr_clr_addrs(&io->pfrio_table, &io->pfrio_ndel, 2734 io->pfrio_flags | PFR_FLAG_USERIOCTL); 2735 break; 2736 } 2737 2738 case DIOCRADDADDRS: { 2739 struct pfioc_table *io = (struct pfioc_table *)addr; 2740 2741 if (io->pfrio_esize != sizeof(struct pfr_addr)) { 2742 error = ENODEV; 2743 break; 2744 } 2745 error = pfr_add_addrs(&io->pfrio_table, io->pfrio_buffer, 2746 io->pfrio_size, &io->pfrio_nadd, io->pfrio_flags | 2747 PFR_FLAG_USERIOCTL); 2748 break; 2749 } 2750 2751 case DIOCRDELADDRS: { 2752 struct pfioc_table *io = (struct pfioc_table *)addr; 2753 2754 if (io->pfrio_esize != sizeof(struct pfr_addr)) { 2755 error = ENODEV; 2756 break; 2757 } 2758 error = pfr_del_addrs(&io->pfrio_table, io->pfrio_buffer, 2759 io->pfrio_size, &io->pfrio_ndel, io->pfrio_flags | 2760 PFR_FLAG_USERIOCTL); 2761 break; 2762 } 2763 2764 case DIOCRSETADDRS: { 2765 struct pfioc_table *io = (struct pfioc_table *)addr; 2766 2767 if (io->pfrio_esize != sizeof(struct pfr_addr)) { 2768 error = ENODEV; 2769 break; 2770 } 2771 error = pfr_set_addrs(&io->pfrio_table, io->pfrio_buffer, 2772 io->pfrio_size, &io->pfrio_size2, &io->pfrio_nadd, 2773 &io->pfrio_ndel, &io->pfrio_nchange, io->pfrio_flags | 2774 PFR_FLAG_USERIOCTL, 0); 2775 break; 2776 } 2777 2778 case DIOCRGETADDRS: { 2779 struct pfioc_table *io = (struct pfioc_table *)addr; 2780 2781 if (io->pfrio_esize != sizeof(struct pfr_addr)) { 2782 error = ENODEV; 2783 break; 2784 } 2785 error = pfr_get_addrs(&io->pfrio_table, io->pfrio_buffer, 2786 &io->pfrio_size, io->pfrio_flags | PFR_FLAG_USERIOCTL); 2787 break; 2788 } 2789 2790 case DIOCRGETASTATS: { 2791 struct pfioc_table *io = (struct pfioc_table *)addr; 2792 2793 if (io->pfrio_esize != sizeof(struct pfr_astats)) { 2794 error = ENODEV; 2795 break; 2796 } 2797 error = pfr_get_astats(&io->pfrio_table, io->pfrio_buffer, 2798 &io->pfrio_size, io->pfrio_flags | PFR_FLAG_USERIOCTL); 2799 break; 2800 } 2801 2802 case DIOCRCLRASTATS: { 2803 struct pfioc_table *io = (struct pfioc_table *)addr; 2804 2805 if (io->pfrio_esize != sizeof(struct pfr_addr)) { 2806 error = ENODEV; 2807 break; 2808 } 2809 error = pfr_clr_astats(&io->pfrio_table, io->pfrio_buffer, 2810 io->pfrio_size, &io->pfrio_nzero, io->pfrio_flags | 2811 PFR_FLAG_USERIOCTL); 2812 break; 2813 } 2814 2815 case DIOCRTSTADDRS: { 2816 struct pfioc_table *io = (struct pfioc_table *)addr; 2817 2818 if (io->pfrio_esize != sizeof(struct pfr_addr)) { 2819 error = ENODEV; 2820 break; 2821 } 2822 error = pfr_tst_addrs(&io->pfrio_table, io->pfrio_buffer, 2823 io->pfrio_size, &io->pfrio_nmatch, io->pfrio_flags | 2824 PFR_FLAG_USERIOCTL); 2825 break; 2826 } 2827 2828 case DIOCRINADEFINE: { 2829 struct pfioc_table *io = (struct pfioc_table *)addr; 2830 2831 if (io->pfrio_esize != sizeof(struct pfr_addr)) { 2832 error = ENODEV; 2833 break; 2834 } 2835 error = pfr_ina_define(&io->pfrio_table, io->pfrio_buffer, 2836 io->pfrio_size, &io->pfrio_nadd, &io->pfrio_naddr, 2837 io->pfrio_ticket, io->pfrio_flags | PFR_FLAG_USERIOCTL); 2838 break; 2839 } 2840 2841 case DIOCOSFPADD: { 2842 struct pf_osfp_ioctl *io = (struct pf_osfp_ioctl *)addr; 2843 error = pf_osfp_add(io); 2844 break; 2845 } 2846 2847 case DIOCOSFPGET: { 2848 struct pf_osfp_ioctl *io = (struct pf_osfp_ioctl *)addr; 2849 error = pf_osfp_get(io); 2850 break; 2851 } 2852 2853 case DIOCXBEGIN: { 2854 struct pfioc_trans *io = (struct pfioc_trans *)addr; 2855 struct pfioc_trans_e *ioe; 2856 struct pfr_table *table; 2857 int i; 2858 2859 if (io->esize != sizeof(*ioe)) { 2860 error = ENODEV; 2861 goto fail; 2862 } 2863 ioe = (struct pfioc_trans_e *)malloc(sizeof(*ioe), 2864 M_TEMP, M_WAITOK); 2865 table = (struct pfr_table *)malloc(sizeof(*table), 2866 M_TEMP, M_WAITOK); 2867 for (i = 0; i < io->size; i++) { 2868 if (copyin(io->array+i, ioe, sizeof(*ioe))) { 2869 free(table, M_TEMP); 2870 free(ioe, M_TEMP); 2871 error = EFAULT; 2872 goto fail; 2873 } 2874 switch (ioe->rs_num) { 2875 #ifdef ALTQ 2876 case PF_RULESET_ALTQ: 2877 if (ioe->anchor[0]) { 2878 free(table, M_TEMP); 2879 free(ioe, M_TEMP); 2880 error = EINVAL; 2881 goto fail; 2882 } 2883 if ((error = pf_begin_altq(&ioe->ticket))) { 2884 free(table, M_TEMP); 2885 free(ioe, M_TEMP); 2886 goto fail; 2887 } 2888 break; 2889 #endif /* ALTQ */ 2890 case PF_RULESET_TABLE: 2891 bzero(table, sizeof(*table)); 2892 strlcpy(table->pfrt_anchor, ioe->anchor, 2893 sizeof(table->pfrt_anchor)); 2894 if ((error = pfr_ina_begin(table, 2895 &ioe->ticket, NULL, 0))) { 2896 free(table, M_TEMP); 2897 free(ioe, M_TEMP); 2898 goto fail; 2899 } 2900 break; 2901 default: 2902 if ((error = pf_begin_rules(&ioe->ticket, 2903 ioe->rs_num, ioe->anchor))) { 2904 free(table, M_TEMP); 2905 free(ioe, M_TEMP); 2906 goto fail; 2907 } 2908 break; 2909 } 2910 if (copyout(ioe, io->array+i, sizeof(io->array[i]))) { 2911 free(table, M_TEMP); 2912 free(ioe, M_TEMP); 2913 error = EFAULT; 2914 goto fail; 2915 } 2916 } 2917 free(table, M_TEMP); 2918 free(ioe, M_TEMP); 2919 break; 2920 } 2921 2922 case DIOCXROLLBACK: { 2923 struct pfioc_trans *io = (struct pfioc_trans *)addr; 2924 struct pfioc_trans_e *ioe; 2925 struct pfr_table *table; 2926 int i; 2927 2928 if (io->esize != sizeof(*ioe)) { 2929 error = ENODEV; 2930 goto fail; 2931 } 2932 ioe = (struct pfioc_trans_e *)malloc(sizeof(*ioe), 2933 M_TEMP, M_WAITOK); 2934 table = (struct pfr_table *)malloc(sizeof(*table), 2935 M_TEMP, M_WAITOK); 2936 for (i = 0; i < io->size; i++) { 2937 if (copyin(io->array+i, ioe, sizeof(*ioe))) { 2938 free(table, M_TEMP); 2939 free(ioe, M_TEMP); 2940 error = EFAULT; 2941 goto fail; 2942 } 2943 switch (ioe->rs_num) { 2944 #ifdef ALTQ 2945 case PF_RULESET_ALTQ: 2946 if (ioe->anchor[0]) { 2947 free(table, M_TEMP); 2948 free(ioe, M_TEMP); 2949 error = EINVAL; 2950 goto fail; 2951 } 2952 if ((error = pf_rollback_altq(ioe->ticket))) { 2953 free(table, M_TEMP); 2954 free(ioe, M_TEMP); 2955 goto fail; /* really bad */ 2956 } 2957 break; 2958 #endif /* ALTQ */ 2959 case PF_RULESET_TABLE: 2960 bzero(table, sizeof(*table)); 2961 strlcpy(table->pfrt_anchor, ioe->anchor, 2962 sizeof(table->pfrt_anchor)); 2963 if ((error = pfr_ina_rollback(table, 2964 ioe->ticket, NULL, 0))) { 2965 free(table, M_TEMP); 2966 free(ioe, M_TEMP); 2967 goto fail; /* really bad */ 2968 } 2969 break; 2970 default: 2971 if ((error = pf_rollback_rules(ioe->ticket, 2972 ioe->rs_num, ioe->anchor))) { 2973 free(table, M_TEMP); 2974 free(ioe, M_TEMP); 2975 goto fail; /* really bad */ 2976 } 2977 break; 2978 } 2979 } 2980 free(table, M_TEMP); 2981 free(ioe, M_TEMP); 2982 break; 2983 } 2984 2985 case DIOCXCOMMIT: { 2986 struct pfioc_trans *io = (struct pfioc_trans *)addr; 2987 struct pfioc_trans_e *ioe; 2988 struct pfr_table *table; 2989 struct pf_ruleset *rs; 2990 int i; 2991 2992 if (io->esize != sizeof(*ioe)) { 2993 error = ENODEV; 2994 goto fail; 2995 } 2996 ioe = (struct pfioc_trans_e *)malloc(sizeof(*ioe), 2997 M_TEMP, M_WAITOK); 2998 table = (struct pfr_table *)malloc(sizeof(*table), 2999 M_TEMP, M_WAITOK); 3000 /* first makes sure everything will succeed */ 3001 for (i = 0; i < io->size; i++) { 3002 if (copyin(io->array+i, ioe, sizeof(*ioe))) { 3003 free(table, M_TEMP); 3004 free(ioe, M_TEMP); 3005 error = EFAULT; 3006 goto fail; 3007 } 3008 switch (ioe->rs_num) { 3009 #ifdef ALTQ 3010 case PF_RULESET_ALTQ: 3011 if (ioe->anchor[0]) { 3012 free(table, M_TEMP); 3013 free(ioe, M_TEMP); 3014 error = EINVAL; 3015 goto fail; 3016 } 3017 if (!altqs_inactive_open || ioe->ticket != 3018 ticket_altqs_inactive) { 3019 free(table, M_TEMP); 3020 free(ioe, M_TEMP); 3021 error = EBUSY; 3022 goto fail; 3023 } 3024 break; 3025 #endif /* ALTQ */ 3026 case PF_RULESET_TABLE: 3027 rs = pf_find_ruleset(ioe->anchor); 3028 if (rs == NULL || !rs->topen || ioe->ticket != 3029 rs->tticket) { 3030 free(table, M_TEMP); 3031 free(ioe, M_TEMP); 3032 error = EBUSY; 3033 goto fail; 3034 } 3035 break; 3036 default: 3037 if (ioe->rs_num < 0 || ioe->rs_num >= 3038 PF_RULESET_MAX) { 3039 free(table, M_TEMP); 3040 free(ioe, M_TEMP); 3041 error = EINVAL; 3042 goto fail; 3043 } 3044 rs = pf_find_ruleset(ioe->anchor); 3045 if (rs == NULL || 3046 !rs->rules[ioe->rs_num].inactive.open || 3047 rs->rules[ioe->rs_num].inactive.ticket != 3048 ioe->ticket) { 3049 free(table, M_TEMP); 3050 free(ioe, M_TEMP); 3051 error = EBUSY; 3052 goto fail; 3053 } 3054 break; 3055 } 3056 } 3057 /* now do the commit - no errors should happen here */ 3058 for (i = 0; i < io->size; i++) { 3059 if (copyin(io->array+i, ioe, sizeof(*ioe))) { 3060 free(table, M_TEMP); 3061 free(ioe, M_TEMP); 3062 error = EFAULT; 3063 goto fail; 3064 } 3065 switch (ioe->rs_num) { 3066 #ifdef ALTQ 3067 case PF_RULESET_ALTQ: 3068 if ((error = pf_commit_altq(ioe->ticket))) { 3069 free(table, M_TEMP); 3070 free(ioe, M_TEMP); 3071 goto fail; /* really bad */ 3072 } 3073 break; 3074 #endif /* ALTQ */ 3075 case PF_RULESET_TABLE: 3076 bzero(table, sizeof(*table)); 3077 strlcpy(table->pfrt_anchor, ioe->anchor, 3078 sizeof(table->pfrt_anchor)); 3079 if ((error = pfr_ina_commit(table, ioe->ticket, 3080 NULL, NULL, 0))) { 3081 free(table, M_TEMP); 3082 free(ioe, M_TEMP); 3083 goto fail; /* really bad */ 3084 } 3085 break; 3086 default: 3087 if ((error = pf_commit_rules(ioe->ticket, 3088 ioe->rs_num, ioe->anchor))) { 3089 free(table, M_TEMP); 3090 free(ioe, M_TEMP); 3091 goto fail; /* really bad */ 3092 } 3093 break; 3094 } 3095 } 3096 free(table, M_TEMP); 3097 free(ioe, M_TEMP); 3098 break; 3099 } 3100 3101 case DIOCGETSRCNODES: { 3102 struct pfioc_src_nodes *psn = (struct pfioc_src_nodes *)addr; 3103 struct pf_src_node *n, *p, *pstore; 3104 u_int32_t nr = 0; 3105 int space = psn->psn_len; 3106 3107 if (space == 0) { 3108 RB_FOREACH(n, pf_src_tree, &tree_src_tracking) 3109 nr++; 3110 psn->psn_len = sizeof(struct pf_src_node) * nr; 3111 break; 3112 } 3113 3114 pstore = malloc(sizeof(*pstore), M_TEMP, M_WAITOK); 3115 3116 p = psn->psn_src_nodes; 3117 RB_FOREACH(n, pf_src_tree, &tree_src_tracking) { 3118 int secs = time_second, diff; 3119 3120 if ((nr + 1) * sizeof(*p) > (unsigned)psn->psn_len) 3121 break; 3122 3123 bcopy(n, pstore, sizeof(*pstore)); 3124 if (n->rule.ptr != NULL) 3125 pstore->rule.nr = n->rule.ptr->nr; 3126 pstore->creation = secs - pstore->creation; 3127 if (pstore->expire > secs) 3128 pstore->expire -= secs; 3129 else 3130 pstore->expire = 0; 3131 3132 /* adjust the connection rate estimate */ 3133 diff = secs - n->conn_rate.last; 3134 if (diff >= n->conn_rate.seconds) 3135 pstore->conn_rate.count = 0; 3136 else 3137 pstore->conn_rate.count -= 3138 n->conn_rate.count * diff / 3139 n->conn_rate.seconds; 3140 3141 error = copyout(pstore, p, sizeof(*p)); 3142 if (error) { 3143 free(pstore, M_TEMP); 3144 goto fail; 3145 } 3146 p++; 3147 nr++; 3148 } 3149 psn->psn_len = sizeof(struct pf_src_node) * nr; 3150 3151 free(pstore, M_TEMP); 3152 break; 3153 } 3154 3155 case DIOCCLRSRCNODES: { 3156 struct pf_src_node *n; 3157 struct pf_state *state; 3158 3159 RB_FOREACH(state, pf_state_tree_id, &tree_id) { 3160 state->src_node = NULL; 3161 state->nat_src_node = NULL; 3162 } 3163 RB_FOREACH(n, pf_src_tree, &tree_src_tracking) { 3164 n->expire = 1; 3165 n->states = 0; 3166 } 3167 pf_purge_expired_src_nodes(1); 3168 pf_status.src_nodes = 0; 3169 break; 3170 } 3171 3172 case DIOCKILLSRCNODES: { 3173 struct pf_src_node *sn; 3174 struct pf_state *ps; 3175 struct pfioc_src_node_kill *psnk = \ 3176 (struct pfioc_src_node_kill *) addr; 3177 int killed = 0; 3178 3179 RB_FOREACH(sn, pf_src_tree, &tree_src_tracking) { 3180 if (PF_MATCHA(psnk->psnk_src.neg, \ 3181 &psnk->psnk_src.addr.v.a.addr, \ 3182 &psnk->psnk_src.addr.v.a.mask, \ 3183 &sn->addr, sn->af) && 3184 PF_MATCHA(psnk->psnk_dst.neg, \ 3185 &psnk->psnk_dst.addr.v.a.addr, \ 3186 &psnk->psnk_dst.addr.v.a.mask, \ 3187 &sn->raddr, sn->af)) { 3188 /* Handle state to src_node linkage */ 3189 if (sn->states != 0) { 3190 RB_FOREACH(ps, pf_state_tree_id, 3191 &tree_id) { 3192 if (ps->src_node == sn) 3193 ps->src_node = NULL; 3194 if (ps->nat_src_node == sn) 3195 ps->nat_src_node = NULL; 3196 } 3197 sn->states = 0; 3198 } 3199 sn->expire = 1; 3200 killed++; 3201 } 3202 } 3203 3204 if (killed > 0) 3205 pf_purge_expired_src_nodes(1); 3206 3207 psnk->psnk_af = killed; 3208 break; 3209 } 3210 3211 case DIOCSETHOSTID: { 3212 u_int32_t *hid = (u_int32_t *)addr; 3213 3214 if (*hid == 0) 3215 pf_status.hostid = cprng_fast32(); 3216 else 3217 pf_status.hostid = *hid; 3218 break; 3219 } 3220 3221 case DIOCOSFPFLUSH: 3222 pf_osfp_flush(); 3223 break; 3224 3225 case DIOCIGETIFACES: { 3226 struct pfioc_iface *io = (struct pfioc_iface *)addr; 3227 3228 if (io->pfiio_esize != sizeof(struct pfi_kif)) { 3229 error = ENODEV; 3230 break; 3231 } 3232 error = pfi_get_ifaces(io->pfiio_name, io->pfiio_buffer, 3233 &io->pfiio_size); 3234 break; 3235 } 3236 3237 case DIOCSETIFFLAG: { 3238 struct pfioc_iface *io = (struct pfioc_iface *)addr; 3239 3240 error = pfi_set_flags(io->pfiio_name, io->pfiio_flags); 3241 break; 3242 } 3243 3244 case DIOCCLRIFFLAG: { 3245 struct pfioc_iface *io = (struct pfioc_iface *)addr; 3246 3247 error = pfi_clear_flags(io->pfiio_name, io->pfiio_flags); 3248 break; 3249 } 3250 3251 case DIOCSETLCK: { 3252 pf_state_lock = *(uint32_t*)addr; 3253 break; 3254 } 3255 3256 default: 3257 error = ENODEV; 3258 break; 3259 } 3260 fail: 3261 splx(s); 3262 if (flags & FWRITE) 3263 rw_exit_write(&pf_consistency_lock); 3264 else 3265 rw_exit_read(&pf_consistency_lock); 3266 return (error); 3267 } 3268 3269 #ifdef __NetBSD__ 3270 #ifdef INET 3271 static int 3272 pfil4_wrapper(void *arg, struct mbuf **mp, struct ifnet *ifp, int dir) 3273 { 3274 int error; 3275 3276 /* 3277 * ensure that mbufs are writable beforehand 3278 * as it's assumed by pf code. 3279 * ip hdr (60 bytes) + tcp hdr (60 bytes) should be enough. 3280 * XXX inefficient 3281 */ 3282 error = m_makewritable(mp, 0, 60 + 60, M_DONTWAIT); 3283 if (error) { 3284 m_freem(*mp); 3285 *mp = NULL; 3286 return error; 3287 } 3288 3289 /* 3290 * If the packet is out-bound, we can't delay checksums 3291 * here. For in-bound, the checksum has already been 3292 * validated. 3293 */ 3294 if (dir == PFIL_OUT) { 3295 if ((*mp)->m_pkthdr.csum_flags & (M_CSUM_TCPv4|M_CSUM_UDPv4)) { 3296 in_delayed_cksum(*mp); 3297 (*mp)->m_pkthdr.csum_flags &= 3298 ~(M_CSUM_TCPv4|M_CSUM_UDPv4); 3299 } 3300 } 3301 3302 if (pf_test(dir == PFIL_OUT ? PF_OUT : PF_IN, ifp, mp, NULL) 3303 != PF_PASS) { 3304 m_freem(*mp); 3305 *mp = NULL; 3306 return EHOSTUNREACH; 3307 } 3308 3309 /* 3310 * we're not compatible with fast-forward. 3311 */ 3312 3313 if (dir == PFIL_IN && *mp) { 3314 (*mp)->m_flags &= ~M_CANFASTFWD; 3315 } 3316 3317 return (0); 3318 } 3319 #endif /* INET */ 3320 3321 #ifdef INET6 3322 static int 3323 pfil6_wrapper(void *arg, struct mbuf **mp, struct ifnet *ifp, int dir) 3324 { 3325 int error; 3326 3327 /* 3328 * ensure that mbufs are writable beforehand 3329 * as it's assumed by pf code. 3330 * XXX inefficient 3331 */ 3332 error = m_makewritable(mp, 0, M_COPYALL, M_DONTWAIT); 3333 if (error) { 3334 m_freem(*mp); 3335 *mp = NULL; 3336 return error; 3337 } 3338 3339 /* 3340 * If the packet is out-bound, we can't delay checksums 3341 * here. For in-bound, the checksum has already been 3342 * validated. 3343 */ 3344 if (dir == PFIL_OUT) { 3345 if ((*mp)->m_pkthdr.csum_flags & (M_CSUM_TCPv6|M_CSUM_UDPv6)) { 3346 in6_delayed_cksum(*mp); 3347 (*mp)->m_pkthdr.csum_flags &= 3348 ~(M_CSUM_TCPv6|M_CSUM_UDPv6); 3349 } 3350 } 3351 3352 if (pf_test6(dir == PFIL_OUT ? PF_OUT : PF_IN, ifp, mp, NULL) 3353 != PF_PASS) { 3354 m_freem(*mp); 3355 *mp = NULL; 3356 return EHOSTUNREACH; 3357 } else 3358 return (0); 3359 } 3360 #endif /* INET6 */ 3361 3362 static int 3363 pf_pfil_attach(void) 3364 { 3365 pfil_head_t *ph_inet; 3366 #ifdef INET6 3367 pfil_head_t *ph_inet6; 3368 #endif /* INET6 */ 3369 int error; 3370 3371 if (pf_pfil_attached) 3372 return (EBUSY); 3373 3374 ph_inet = pfil_head_get(PFIL_TYPE_AF, (void *)AF_INET); 3375 if (ph_inet) 3376 error = pfil_add_hook((void *)pfil4_wrapper, NULL, 3377 PFIL_IN|PFIL_OUT, ph_inet); 3378 else 3379 error = ENOENT; 3380 if (error) 3381 return (error); 3382 3383 #ifdef INET6 3384 ph_inet6 = pfil_head_get(PFIL_TYPE_AF, (void *)AF_INET6); 3385 if (ph_inet6) 3386 error = pfil_add_hook((void *)pfil6_wrapper, NULL, 3387 PFIL_IN|PFIL_OUT, ph_inet6); 3388 else 3389 error = ENOENT; 3390 if (error) 3391 goto bad; 3392 #endif /* INET6 */ 3393 3394 pf_pfil_attached = 1; 3395 3396 return (0); 3397 3398 #ifdef INET6 3399 bad: 3400 pfil_remove_hook(pfil4_wrapper, NULL, PFIL_IN|PFIL_OUT, ph_inet); 3401 #endif /* INET6 */ 3402 3403 return (error); 3404 } 3405 3406 static int 3407 pf_pfil_detach(void) 3408 { 3409 pfil_head_t *ph_inet; 3410 #ifdef INET6 3411 pfil_head_t *ph_inet6; 3412 #endif /* INET6 */ 3413 3414 if (pf_pfil_attached == 0) 3415 return (EBUSY); 3416 3417 ph_inet = pfil_head_get(PFIL_TYPE_AF, (void *)AF_INET); 3418 if (ph_inet) 3419 pfil_remove_hook((void *)pfil4_wrapper, NULL, 3420 PFIL_IN|PFIL_OUT, ph_inet); 3421 #ifdef INET6 3422 ph_inet6 = pfil_head_get(PFIL_TYPE_AF, (void *)AF_INET6); 3423 if (ph_inet6) 3424 pfil_remove_hook((void *)pfil6_wrapper, NULL, 3425 PFIL_IN|PFIL_OUT, ph_inet6); 3426 #endif /* INET6 */ 3427 pf_pfil_attached = 0; 3428 3429 return (0); 3430 } 3431 #endif /* __NetBSD__ */ 3432 3433 #if defined(__NetBSD__) 3434 MODULE(MODULE_CLASS_DRIVER, pf, "bpf"); 3435 3436 static int 3437 pf_modcmd(modcmd_t cmd, void *opaque) 3438 { 3439 #ifdef _MODULE 3440 extern void pflogattach(int); 3441 extern void pflogdetach(void); 3442 3443 devmajor_t cmajor = NODEVMAJOR, bmajor = NODEVMAJOR; 3444 int err; 3445 3446 switch (cmd) { 3447 case MODULE_CMD_INIT: 3448 err = devsw_attach("pf", NULL, &bmajor, &pf_cdevsw, &cmajor); 3449 if (err) 3450 return err; 3451 pfattach(1); 3452 pflogattach(1); 3453 return 0; 3454 case MODULE_CMD_FINI: 3455 if (pf_status.running) { 3456 return EBUSY; 3457 } else { 3458 pfdetach(); 3459 pflogdetach(); 3460 return devsw_detach(NULL, &pf_cdevsw); 3461 } 3462 default: 3463 return ENOTTY; 3464 } 3465 #else 3466 if (cmd == MODULE_CMD_INIT) 3467 return 0; 3468 return ENOTTY; 3469 #endif 3470 } 3471 #endif 3472
Indexes created Thu Oct 02 14:10:14 GMT 2025