1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause 3 * 4 * Copyright (c) 2021 Rubicon Communications, LLC (Netgate) 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 11 * - Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * - Redistributions in binary form must reproduce the above 14 * copyright notice, this list of conditions and the following 15 * disclaimer in the documentation and/or other materials provided 16 * with the distribution. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 20 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 21 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE 22 * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 23 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 24 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 25 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER 26 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN 28 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 * 31 * $FreeBSD$ 32 */ 33 34 #include <sys/cdefs.h> 35 36 #include <sys/ioctl.h> 37 #include <sys/nv.h> 38 #include <sys/queue.h> 39 #include <sys/types.h> 40 41 #include <net/if.h> 42 #include <net/pfvar.h> 43 #include <netinet/in.h> 44 45 #include <assert.h> 46 #include <err.h> 47 #include <errno.h> 48 #include <stdlib.h> 49 #include <string.h> 50 51 #include "libpfctl.h" 52 53 const char* PFCTL_SYNCOOKIES_MODE_NAMES[] = { 54 "never", 55 "always", 56 "adaptive" 57 }; 58 59 static int _pfctl_clear_states(int , const struct pfctl_kill *, 60 unsigned int *, uint64_t); 61 62 static int 63 pfctl_do_ioctl(int dev, uint cmd, size_t size, nvlist_t **nvl) 64 { 65 struct pfioc_nv nv; 66 void *data; 67 size_t nvlen; 68 int ret; 69 70 data = nvlist_pack(*nvl, &nvlen); 71 72 retry: 73 nv.data = malloc(size); 74 memcpy(nv.data, data, nvlen); 75 free(data); 76 77 nv.len = nvlen; 78 nv.size = size; 79 80 ret = ioctl(dev, cmd, &nv); 81 if (ret == -1 && errno == ENOSPC) { 82 size *= 2; 83 free(nv.data); 84 goto retry; 85 } 86 87 nvlist_destroy(*nvl); 88 *nvl = NULL; 89 90 if (ret == 0) { 91 *nvl = nvlist_unpack(nv.data, nv.len, 0); 92 if (*nvl == NULL) { 93 free(nv.data); 94 return (EIO); 95 } 96 } else { 97 ret = errno; 98 } 99 100 free(nv.data); 101 102 return (ret); 103 } 104 105 static void 106 pf_nvuint_8_array(const nvlist_t *nvl, const char *name, size_t maxelems, 107 uint8_t *numbers, size_t *nelems) 108 { 109 const uint64_t *tmp; 110 size_t elems; 111 112 tmp = nvlist_get_number_array(nvl, name, &elems); 113 assert(elems <= maxelems); 114 115 for (size_t i = 0; i < elems; i++) 116 numbers[i] = tmp[i]; 117 118 if (nelems) 119 *nelems = elems; 120 } 121 122 static void 123 pf_nvuint_16_array(const nvlist_t *nvl, const char *name, size_t maxelems, 124 uint16_t *numbers, size_t *nelems) 125 { 126 const uint64_t *tmp; 127 size_t elems; 128 129 tmp = nvlist_get_number_array(nvl, name, &elems); 130 assert(elems <= maxelems); 131 132 for (size_t i = 0; i < elems; i++) 133 numbers[i] = tmp[i]; 134 135 if (nelems) 136 *nelems = elems; 137 } 138 139 static void 140 pf_nvuint_32_array(const nvlist_t *nvl, const char *name, size_t maxelems, 141 uint32_t *numbers, size_t *nelems) 142 { 143 const uint64_t *tmp; 144 size_t elems; 145 146 tmp = nvlist_get_number_array(nvl, name, &elems); 147 assert(elems <= maxelems); 148 149 for (size_t i = 0; i < elems; i++) 150 numbers[i] = tmp[i]; 151 152 if (nelems) 153 *nelems = elems; 154 } 155 156 static void 157 pf_nvuint_64_array(const nvlist_t *nvl, const char *name, size_t maxelems, 158 uint64_t *numbers, size_t *nelems) 159 { 160 const uint64_t *tmp; 161 size_t elems; 162 163 tmp = nvlist_get_number_array(nvl, name, &elems); 164 assert(elems <= maxelems); 165 166 for (size_t i = 0; i < elems; i++) 167 numbers[i] = tmp[i]; 168 169 if (nelems) 170 *nelems = elems; 171 } 172 173 static void 174 _pfctl_get_status_counters(const nvlist_t *nvl, 175 struct pfctl_status_counters *counters) 176 { 177 const uint64_t *ids, *counts; 178 const char *const *names; 179 size_t id_len, counter_len, names_len; 180 181 ids = nvlist_get_number_array(nvl, "ids", &id_len); 182 counts = nvlist_get_number_array(nvl, "counters", &counter_len); 183 names = nvlist_get_string_array(nvl, "names", &names_len); 184 assert(id_len == counter_len); 185 assert(counter_len == names_len); 186 187 TAILQ_INIT(counters); 188 189 for (size_t i = 0; i < id_len; i++) { 190 struct pfctl_status_counter *c; 191 192 c = malloc(sizeof(*c)); 193 194 c->id = ids[i]; 195 c->counter = counts[i]; 196 c->name = strdup(names[i]); 197 198 TAILQ_INSERT_TAIL(counters, c, entry); 199 } 200 } 201 202 struct pfctl_status * 203 pfctl_get_status(int dev) 204 { 205 struct pfctl_status *status; 206 nvlist_t *nvl; 207 size_t len; 208 const void *chksum; 209 210 status = calloc(1, sizeof(*status)); 211 if (status == NULL) 212 return (NULL); 213 214 nvl = nvlist_create(0); 215 216 if (pfctl_do_ioctl(dev, DIOCGETSTATUSNV, 4096, &nvl)) { 217 free(status); 218 return (NULL); 219 } 220 221 status->running = nvlist_get_bool(nvl, "running"); 222 status->since = nvlist_get_number(nvl, "since"); 223 status->debug = nvlist_get_number(nvl, "debug"); 224 status->hostid = ntohl(nvlist_get_number(nvl, "hostid")); 225 status->states = nvlist_get_number(nvl, "states"); 226 status->src_nodes = nvlist_get_number(nvl, "src_nodes"); 227 228 strlcpy(status->ifname, nvlist_get_string(nvl, "ifname"), 229 IFNAMSIZ); 230 chksum = nvlist_get_binary(nvl, "chksum", &len); 231 assert(len == PF_MD5_DIGEST_LENGTH); 232 memcpy(status->pf_chksum, chksum, len); 233 234 _pfctl_get_status_counters(nvlist_get_nvlist(nvl, "counters"), 235 &status->counters); 236 _pfctl_get_status_counters(nvlist_get_nvlist(nvl, "lcounters"), 237 &status->lcounters); 238 _pfctl_get_status_counters(nvlist_get_nvlist(nvl, "fcounters"), 239 &status->fcounters); 240 _pfctl_get_status_counters(nvlist_get_nvlist(nvl, "scounters"), 241 &status->scounters); 242 243 pf_nvuint_64_array(nvl, "pcounters", 2 * 2 * 3, 244 (uint64_t *)status->pcounters, NULL); 245 pf_nvuint_64_array(nvl, "bcounters", 2 * 2, 246 (uint64_t *)status->bcounters, NULL); 247 248 nvlist_destroy(nvl); 249 250 return (status); 251 } 252 253 void 254 pfctl_free_status(struct pfctl_status *status) 255 { 256 struct pfctl_status_counter *c, *tmp; 257 258 TAILQ_FOREACH_SAFE(c, &status->counters, entry, tmp) { 259 free(c->name); 260 free(c); 261 } 262 TAILQ_FOREACH_SAFE(c, &status->lcounters, entry, tmp) { 263 free(c->name); 264 free(c); 265 } 266 TAILQ_FOREACH_SAFE(c, &status->fcounters, entry, tmp) { 267 free(c->name); 268 free(c); 269 } 270 TAILQ_FOREACH_SAFE(c, &status->scounters, entry, tmp) { 271 free(c->name); 272 free(c); 273 } 274 275 free(status); 276 } 277 278 static void 279 pfctl_nv_add_addr(nvlist_t *nvparent, const char *name, 280 const struct pf_addr *addr) 281 { 282 nvlist_t *nvl = nvlist_create(0); 283 284 nvlist_add_binary(nvl, "addr", addr, sizeof(*addr)); 285 286 nvlist_add_nvlist(nvparent, name, nvl); 287 nvlist_destroy(nvl); 288 } 289 290 static void 291 pf_nvaddr_to_addr(const nvlist_t *nvl, struct pf_addr *addr) 292 { 293 size_t len; 294 const void *data; 295 296 data = nvlist_get_binary(nvl, "addr", &len); 297 assert(len == sizeof(struct pf_addr)); 298 memcpy(addr, data, len); 299 } 300 301 static void 302 pfctl_nv_add_addr_wrap(nvlist_t *nvparent, const char *name, 303 const struct pf_addr_wrap *addr) 304 { 305 nvlist_t *nvl = nvlist_create(0); 306 307 nvlist_add_number(nvl, "type", addr->type); 308 nvlist_add_number(nvl, "iflags", addr->iflags); 309 if (addr->type == PF_ADDR_DYNIFTL) 310 nvlist_add_string(nvl, "ifname", addr->v.ifname); 311 if (addr->type == PF_ADDR_TABLE) 312 nvlist_add_string(nvl, "tblname", addr->v.tblname); 313 pfctl_nv_add_addr(nvl, "addr", &addr->v.a.addr); 314 pfctl_nv_add_addr(nvl, "mask", &addr->v.a.mask); 315 316 nvlist_add_nvlist(nvparent, name, nvl); 317 nvlist_destroy(nvl); 318 } 319 320 static void 321 pf_nvaddr_wrap_to_addr_wrap(const nvlist_t *nvl, struct pf_addr_wrap *addr) 322 { 323 bzero(addr, sizeof(*addr)); 324 325 addr->type = nvlist_get_number(nvl, "type"); 326 addr->iflags = nvlist_get_number(nvl, "iflags"); 327 if (addr->type == PF_ADDR_DYNIFTL) { 328 strlcpy(addr->v.ifname, nvlist_get_string(nvl, "ifname"), 329 IFNAMSIZ); 330 addr->p.dyncnt = nvlist_get_number(nvl, "dyncnt"); 331 } 332 if (addr->type == PF_ADDR_TABLE) { 333 strlcpy(addr->v.tblname, nvlist_get_string(nvl, "tblname"), 334 PF_TABLE_NAME_SIZE); 335 addr->p.tblcnt = nvlist_get_number(nvl, "tblcnt"); 336 } 337 338 pf_nvaddr_to_addr(nvlist_get_nvlist(nvl, "addr"), &addr->v.a.addr); 339 pf_nvaddr_to_addr(nvlist_get_nvlist(nvl, "mask"), &addr->v.a.mask); 340 } 341 342 static void 343 pfctl_nv_add_rule_addr(nvlist_t *nvparent, const char *name, 344 const struct pf_rule_addr *addr) 345 { 346 uint64_t ports[2]; 347 nvlist_t *nvl = nvlist_create(0); 348 349 pfctl_nv_add_addr_wrap(nvl, "addr", &addr->addr); 350 ports[0] = addr->port[0]; 351 ports[1] = addr->port[1]; 352 nvlist_add_number_array(nvl, "port", ports, 2); 353 nvlist_add_number(nvl, "neg", addr->neg); 354 nvlist_add_number(nvl, "port_op", addr->port_op); 355 356 nvlist_add_nvlist(nvparent, name, nvl); 357 nvlist_destroy(nvl); 358 } 359 360 static void 361 pf_nvrule_addr_to_rule_addr(const nvlist_t *nvl, struct pf_rule_addr *addr) 362 { 363 pf_nvaddr_wrap_to_addr_wrap(nvlist_get_nvlist(nvl, "addr"), &addr->addr); 364 365 pf_nvuint_16_array(nvl, "port", 2, addr->port, NULL); 366 addr->neg = nvlist_get_number(nvl, "neg"); 367 addr->port_op = nvlist_get_number(nvl, "port_op"); 368 } 369 370 static void 371 pfctl_nv_add_mape(nvlist_t *nvparent, const char *name, 372 const struct pf_mape_portset *mape) 373 { 374 nvlist_t *nvl = nvlist_create(0); 375 376 nvlist_add_number(nvl, "offset", mape->offset); 377 nvlist_add_number(nvl, "psidlen", mape->psidlen); 378 nvlist_add_number(nvl, "psid", mape->psid); 379 nvlist_add_nvlist(nvparent, name, nvl); 380 nvlist_destroy(nvl); 381 } 382 383 static void 384 pfctl_nv_add_pool(nvlist_t *nvparent, const char *name, 385 const struct pfctl_pool *pool) 386 { 387 uint64_t ports[2]; 388 nvlist_t *nvl = nvlist_create(0); 389 390 nvlist_add_binary(nvl, "key", &pool->key, sizeof(pool->key)); 391 pfctl_nv_add_addr(nvl, "counter", &pool->counter); 392 nvlist_add_number(nvl, "tblidx", pool->tblidx); 393 394 ports[0] = pool->proxy_port[0]; 395 ports[1] = pool->proxy_port[1]; 396 nvlist_add_number_array(nvl, "proxy_port", ports, 2); 397 nvlist_add_number(nvl, "opts", pool->opts); 398 pfctl_nv_add_mape(nvl, "mape", &pool->mape); 399 400 nvlist_add_nvlist(nvparent, name, nvl); 401 nvlist_destroy(nvl); 402 } 403 404 static void 405 pf_nvmape_to_mape(const nvlist_t *nvl, struct pf_mape_portset *mape) 406 { 407 mape->offset = nvlist_get_number(nvl, "offset"); 408 mape->psidlen = nvlist_get_number(nvl, "psidlen"); 409 mape->psid = nvlist_get_number(nvl, "psid"); 410 } 411 412 static void 413 pf_nvpool_to_pool(const nvlist_t *nvl, struct pfctl_pool *pool) 414 { 415 size_t len; 416 const void *data; 417 418 data = nvlist_get_binary(nvl, "key", &len); 419 assert(len == sizeof(pool->key)); 420 memcpy(&pool->key, data, len); 421 422 pf_nvaddr_to_addr(nvlist_get_nvlist(nvl, "counter"), &pool->counter); 423 424 pool->tblidx = nvlist_get_number(nvl, "tblidx"); 425 pf_nvuint_16_array(nvl, "proxy_port", 2, pool->proxy_port, NULL); 426 pool->opts = nvlist_get_number(nvl, "opts"); 427 428 if (nvlist_exists_nvlist(nvl, "mape")) 429 pf_nvmape_to_mape(nvlist_get_nvlist(nvl, "mape"), &pool->mape); 430 } 431 432 static void 433 pfctl_nv_add_uid(nvlist_t *nvparent, const char *name, 434 const struct pf_rule_uid *uid) 435 { 436 uint64_t uids[2]; 437 nvlist_t *nvl = nvlist_create(0); 438 439 uids[0] = uid->uid[0]; 440 uids[1] = uid->uid[1]; 441 nvlist_add_number_array(nvl, "uid", uids, 2); 442 nvlist_add_number(nvl, "op", uid->op); 443 444 nvlist_add_nvlist(nvparent, name, nvl); 445 nvlist_destroy(nvl); 446 } 447 448 static void 449 pf_nvrule_uid_to_rule_uid(const nvlist_t *nvl, struct pf_rule_uid *uid) 450 { 451 pf_nvuint_32_array(nvl, "uid", 2, uid->uid, NULL); 452 uid->op = nvlist_get_number(nvl, "op"); 453 } 454 455 static void 456 pfctl_nv_add_divert(nvlist_t *nvparent, const char *name, 457 const struct pfctl_rule *r) 458 { 459 nvlist_t *nvl = nvlist_create(0); 460 461 pfctl_nv_add_addr(nvl, "addr", &r->divert.addr); 462 nvlist_add_number(nvl, "port", r->divert.port); 463 464 nvlist_add_nvlist(nvparent, name, nvl); 465 nvlist_destroy(nvl); 466 } 467 468 static void 469 pf_nvdivert_to_divert(const nvlist_t *nvl, struct pfctl_rule *rule) 470 { 471 pf_nvaddr_to_addr(nvlist_get_nvlist(nvl, "addr"), &rule->divert.addr); 472 rule->divert.port = nvlist_get_number(nvl, "port"); 473 } 474 475 static void 476 pf_nvrule_to_rule(const nvlist_t *nvl, struct pfctl_rule *rule) 477 { 478 const uint64_t *skip; 479 const char *const *labels; 480 size_t skipcount, labelcount; 481 482 rule->nr = nvlist_get_number(nvl, "nr"); 483 484 pf_nvrule_addr_to_rule_addr(nvlist_get_nvlist(nvl, "src"), &rule->src); 485 pf_nvrule_addr_to_rule_addr(nvlist_get_nvlist(nvl, "dst"), &rule->dst); 486 487 skip = nvlist_get_number_array(nvl, "skip", &skipcount); 488 assert(skip); 489 assert(skipcount == PF_SKIP_COUNT); 490 for (int i = 0; i < PF_SKIP_COUNT; i++) 491 rule->skip[i].nr = skip[i]; 492 493 labels = nvlist_get_string_array(nvl, "labels", &labelcount); 494 assert(labelcount <= PF_RULE_MAX_LABEL_COUNT); 495 for (size_t i = 0; i < labelcount; i++) 496 strlcpy(rule->label[i], labels[i], PF_RULE_LABEL_SIZE); 497 rule->ridentifier = nvlist_get_number(nvl, "ridentifier"); 498 strlcpy(rule->ifname, nvlist_get_string(nvl, "ifname"), IFNAMSIZ); 499 strlcpy(rule->qname, nvlist_get_string(nvl, "qname"), PF_QNAME_SIZE); 500 strlcpy(rule->pqname, nvlist_get_string(nvl, "pqname"), PF_QNAME_SIZE); 501 strlcpy(rule->tagname, nvlist_get_string(nvl, "tagname"), 502 PF_TAG_NAME_SIZE); 503 strlcpy(rule->match_tagname, nvlist_get_string(nvl, "match_tagname"), 504 PF_TAG_NAME_SIZE); 505 506 strlcpy(rule->overload_tblname, nvlist_get_string(nvl, "overload_tblname"), 507 PF_TABLE_NAME_SIZE); 508 509 pf_nvpool_to_pool(nvlist_get_nvlist(nvl, "rpool"), &rule->rpool); 510 511 rule->evaluations = nvlist_get_number(nvl, "evaluations"); 512 pf_nvuint_64_array(nvl, "packets", 2, rule->packets, NULL); 513 pf_nvuint_64_array(nvl, "bytes", 2, rule->bytes, NULL); 514 515 rule->os_fingerprint = nvlist_get_number(nvl, "os_fingerprint"); 516 517 rule->rtableid = nvlist_get_number(nvl, "rtableid"); 518 pf_nvuint_32_array(nvl, "timeout", PFTM_MAX, rule->timeout, NULL); 519 rule->max_states = nvlist_get_number(nvl, "max_states"); 520 rule->max_src_nodes = nvlist_get_number(nvl, "max_src_nodes"); 521 rule->max_src_states = nvlist_get_number(nvl, "max_src_states"); 522 rule->max_src_conn = nvlist_get_number(nvl, "max_src_conn"); 523 rule->max_src_conn_rate.limit = 524 nvlist_get_number(nvl, "max_src_conn_rate.limit"); 525 rule->max_src_conn_rate.seconds = 526 nvlist_get_number(nvl, "max_src_conn_rate.seconds"); 527 rule->qid = nvlist_get_number(nvl, "qid"); 528 rule->pqid = nvlist_get_number(nvl, "pqid"); 529 rule->dnpipe = nvlist_get_number(nvl, "dnpipe"); 530 rule->dnrpipe = nvlist_get_number(nvl, "dnrpipe"); 531 rule->free_flags = nvlist_get_number(nvl, "dnflags"); 532 rule->prob = nvlist_get_number(nvl, "prob"); 533 rule->cuid = nvlist_get_number(nvl, "cuid"); 534 rule->cpid = nvlist_get_number(nvl, "cpid"); 535 536 rule->return_icmp = nvlist_get_number(nvl, "return_icmp"); 537 rule->return_icmp6 = nvlist_get_number(nvl, "return_icmp6"); 538 rule->max_mss = nvlist_get_number(nvl, "max_mss"); 539 rule->scrub_flags = nvlist_get_number(nvl, "scrub_flags"); 540 541 pf_nvrule_uid_to_rule_uid(nvlist_get_nvlist(nvl, "uid"), &rule->uid); 542 pf_nvrule_uid_to_rule_uid(nvlist_get_nvlist(nvl, "gid"), 543 (struct pf_rule_uid *)&rule->gid); 544 545 rule->rule_flag = nvlist_get_number(nvl, "rule_flag"); 546 rule->action = nvlist_get_number(nvl, "action"); 547 rule->direction = nvlist_get_number(nvl, "direction"); 548 rule->log = nvlist_get_number(nvl, "log"); 549 rule->logif = nvlist_get_number(nvl, "logif"); 550 rule->quick = nvlist_get_number(nvl, "quick"); 551 rule->ifnot = nvlist_get_number(nvl, "ifnot"); 552 rule->match_tag_not = nvlist_get_number(nvl, "match_tag_not"); 553 rule->natpass = nvlist_get_number(nvl, "natpass"); 554 555 rule->keep_state = nvlist_get_number(nvl, "keep_state"); 556 rule->af = nvlist_get_number(nvl, "af"); 557 rule->proto = nvlist_get_number(nvl, "proto"); 558 rule->type = nvlist_get_number(nvl, "type"); 559 rule->code = nvlist_get_number(nvl, "code"); 560 rule->flags = nvlist_get_number(nvl, "flags"); 561 rule->flagset = nvlist_get_number(nvl, "flagset"); 562 rule->min_ttl = nvlist_get_number(nvl, "min_ttl"); 563 rule->allow_opts = nvlist_get_number(nvl, "allow_opts"); 564 rule->rt = nvlist_get_number(nvl, "rt"); 565 rule->return_ttl = nvlist_get_number(nvl, "return_ttl"); 566 rule->tos = nvlist_get_number(nvl, "tos"); 567 rule->set_tos = nvlist_get_number(nvl, "set_tos"); 568 rule->anchor_relative = nvlist_get_number(nvl, "anchor_relative"); 569 rule->anchor_wildcard = nvlist_get_number(nvl, "anchor_wildcard"); 570 571 rule->flush = nvlist_get_number(nvl, "flush"); 572 rule->prio = nvlist_get_number(nvl, "prio"); 573 pf_nvuint_8_array(nvl, "set_prio", 2, rule->set_prio, NULL); 574 575 pf_nvdivert_to_divert(nvlist_get_nvlist(nvl, "divert"), rule); 576 577 rule->states_cur = nvlist_get_number(nvl, "states_cur"); 578 rule->states_tot = nvlist_get_number(nvl, "states_tot"); 579 rule->src_nodes = nvlist_get_number(nvl, "src_nodes"); 580 } 581 582 static void 583 pfctl_nveth_addr_to_eth_addr(const nvlist_t *nvl, struct pfctl_eth_addr *addr) 584 { 585 static const u_int8_t EMPTY_MAC[ETHER_ADDR_LEN] = { 0 }; 586 size_t len; 587 const void *data; 588 589 data = nvlist_get_binary(nvl, "addr", &len); 590 assert(len == sizeof(addr->addr)); 591 memcpy(addr->addr, data, sizeof(addr->addr)); 592 593 data = nvlist_get_binary(nvl, "mask", &len); 594 assert(len == sizeof(addr->mask)); 595 memcpy(addr->mask, data, sizeof(addr->mask)); 596 597 addr->neg = nvlist_get_bool(nvl, "neg"); 598 599 /* To make checks for 'is this address set?' easier. */ 600 addr->isset = memcmp(addr->addr, EMPTY_MAC, ETHER_ADDR_LEN) != 0; 601 } 602 603 static nvlist_t * 604 pfctl_eth_addr_to_nveth_addr(const struct pfctl_eth_addr *addr) 605 { 606 nvlist_t *nvl; 607 608 nvl = nvlist_create(0); 609 if (nvl == NULL) 610 return (NULL); 611 612 nvlist_add_bool(nvl, "neg", addr->neg); 613 nvlist_add_binary(nvl, "addr", &addr->addr, ETHER_ADDR_LEN); 614 nvlist_add_binary(nvl, "mask", &addr->mask, ETHER_ADDR_LEN); 615 616 return (nvl); 617 } 618 619 static void 620 pfctl_nveth_rule_to_eth_rule(const nvlist_t *nvl, struct pfctl_eth_rule *rule) 621 { 622 rule->nr = nvlist_get_number(nvl, "nr"); 623 rule->quick = nvlist_get_bool(nvl, "quick"); 624 strlcpy(rule->ifname, nvlist_get_string(nvl, "ifname"), IFNAMSIZ); 625 rule->ifnot = nvlist_get_bool(nvl, "ifnot"); 626 rule->direction = nvlist_get_number(nvl, "direction"); 627 rule->proto = nvlist_get_number(nvl, "proto"); 628 629 pfctl_nveth_addr_to_eth_addr(nvlist_get_nvlist(nvl, "src"), 630 &rule->src); 631 pfctl_nveth_addr_to_eth_addr(nvlist_get_nvlist(nvl, "dst"), 632 &rule->dst); 633 634 pf_nvrule_addr_to_rule_addr(nvlist_get_nvlist(nvl, "ipsrc"), 635 &rule->ipsrc); 636 pf_nvrule_addr_to_rule_addr(nvlist_get_nvlist(nvl, "ipdst"), 637 &rule->ipdst); 638 639 rule->evaluations = nvlist_get_number(nvl, "evaluations"); 640 rule->packets[0] = nvlist_get_number(nvl, "packets-in"); 641 rule->packets[1] = nvlist_get_number(nvl, "packets-out"); 642 rule->bytes[0] = nvlist_get_number(nvl, "bytes-in"); 643 rule->bytes[1] = nvlist_get_number(nvl, "bytes-out"); 644 645 strlcpy(rule->qname, nvlist_get_string(nvl, "qname"), PF_QNAME_SIZE); 646 strlcpy(rule->tagname, nvlist_get_string(nvl, "tagname"), 647 PF_TAG_NAME_SIZE); 648 649 rule->dnpipe = nvlist_get_number(nvl, "dnpipe"); 650 rule->dnflags = nvlist_get_number(nvl, "dnflags"); 651 652 rule->anchor_relative = nvlist_get_number(nvl, "anchor_relative"); 653 rule->anchor_wildcard = nvlist_get_number(nvl, "anchor_wildcard"); 654 655 rule->action = nvlist_get_number(nvl, "action"); 656 } 657 658 int 659 pfctl_get_eth_rulesets_info(int dev, struct pfctl_eth_rulesets_info *ri, 660 const char *path) 661 { 662 nvlist_t *nvl; 663 int ret; 664 665 bzero(ri, sizeof(*ri)); 666 667 nvl = nvlist_create(0); 668 nvlist_add_string(nvl, "path", path); 669 670 if ((ret = pfctl_do_ioctl(dev, DIOCGETETHRULESETS, 256, &nvl)) != 0) 671 return (ret); 672 673 ri->nr = nvlist_get_number(nvl, "nr"); 674 675 nvlist_destroy(nvl); 676 return (0); 677 } 678 679 int 680 pfctl_get_eth_ruleset(int dev, const char *path, int nr, 681 struct pfctl_eth_ruleset_info *ri) 682 { 683 nvlist_t *nvl; 684 int ret; 685 686 bzero(ri, sizeof(*ri)); 687 688 nvl = nvlist_create(0); 689 nvlist_add_string(nvl, "path", path); 690 nvlist_add_number(nvl, "nr", nr); 691 692 if ((ret = pfctl_do_ioctl(dev, DIOCGETETHRULESET, 1024, &nvl)) != 0) 693 return (ret); 694 695 ri->nr = nvlist_get_number(nvl, "nr"); 696 strlcpy(ri->path, nvlist_get_string(nvl, "path"), MAXPATHLEN); 697 strlcpy(ri->name, nvlist_get_string(nvl, "name"), 698 PF_ANCHOR_NAME_SIZE); 699 700 return (0); 701 } 702 703 int 704 pfctl_get_eth_rules_info(int dev, struct pfctl_eth_rules_info *rules, 705 const char *path) 706 { 707 nvlist_t *nvl; 708 int ret; 709 710 bzero(rules, sizeof(*rules)); 711 712 nvl = nvlist_create(0); 713 nvlist_add_string(nvl, "anchor", path); 714 715 if ((ret = pfctl_do_ioctl(dev, DIOCGETETHRULES, 1024, &nvl)) != 0) 716 return (ret); 717 718 rules->nr = nvlist_get_number(nvl, "nr"); 719 rules->ticket = nvlist_get_number(nvl, "ticket"); 720 721 nvlist_destroy(nvl); 722 return (0); 723 } 724 725 int 726 pfctl_get_eth_rule(int dev, uint32_t nr, uint32_t ticket, 727 const char *path, struct pfctl_eth_rule *rule, bool clear, 728 char *anchor_call) 729 { 730 nvlist_t *nvl; 731 int ret; 732 733 nvl = nvlist_create(0); 734 735 nvlist_add_string(nvl, "anchor", path); 736 nvlist_add_number(nvl, "ticket", ticket); 737 nvlist_add_number(nvl, "nr", nr); 738 nvlist_add_bool(nvl, "clear", clear); 739 740 if ((ret = pfctl_do_ioctl(dev, DIOCGETETHRULE, 2048, &nvl)) != 0) 741 return (ret); 742 743 pfctl_nveth_rule_to_eth_rule(nvl, rule); 744 745 if (anchor_call) 746 strlcpy(anchor_call, nvlist_get_string(nvl, "anchor_call"), 747 MAXPATHLEN); 748 749 nvlist_destroy(nvl); 750 return (0); 751 } 752 753 int 754 pfctl_add_eth_rule(int dev, const struct pfctl_eth_rule *r, const char *anchor, 755 const char *anchor_call, uint32_t ticket) 756 { 757 struct pfioc_nv nv; 758 nvlist_t *nvl, *addr; 759 void *packed; 760 int error = 0; 761 size_t size; 762 763 nvl = nvlist_create(0); 764 765 nvlist_add_number(nvl, "ticket", ticket); 766 nvlist_add_string(nvl, "anchor", anchor); 767 nvlist_add_string(nvl, "anchor_call", anchor_call); 768 769 nvlist_add_number(nvl, "nr", r->nr); 770 nvlist_add_bool(nvl, "quick", r->quick); 771 nvlist_add_string(nvl, "ifname", r->ifname); 772 nvlist_add_bool(nvl, "ifnot", r->ifnot); 773 nvlist_add_number(nvl, "direction", r->direction); 774 nvlist_add_number(nvl, "proto", r->proto); 775 776 addr = pfctl_eth_addr_to_nveth_addr(&r->src); 777 if (addr == NULL) { 778 nvlist_destroy(nvl); 779 return (ENOMEM); 780 } 781 nvlist_add_nvlist(nvl, "src", addr); 782 nvlist_destroy(addr); 783 784 addr = pfctl_eth_addr_to_nveth_addr(&r->dst); 785 if (addr == NULL) { 786 nvlist_destroy(nvl); 787 return (ENOMEM); 788 } 789 nvlist_add_nvlist(nvl, "dst", addr); 790 nvlist_destroy(addr); 791 792 pfctl_nv_add_rule_addr(nvl, "ipsrc", &r->ipsrc); 793 pfctl_nv_add_rule_addr(nvl, "ipdst", &r->ipdst); 794 795 nvlist_add_string(nvl, "qname", r->qname); 796 nvlist_add_string(nvl, "tagname", r->tagname); 797 nvlist_add_number(nvl, "dnpipe", r->dnpipe); 798 nvlist_add_number(nvl, "dnflags", r->dnflags); 799 800 nvlist_add_number(nvl, "action", r->action); 801 802 packed = nvlist_pack(nvl, &size); 803 if (packed == NULL) { 804 nvlist_destroy(nvl); 805 return (ENOMEM); 806 } 807 808 nv.len = size; 809 nv.size = size; 810 nv.data = packed; 811 812 if (ioctl(dev, DIOCADDETHRULE, &nv) != 0) 813 error = errno; 814 815 free(packed); 816 nvlist_destroy(nvl); 817 818 return (error); 819 } 820 821 int 822 pfctl_add_rule(int dev, const struct pfctl_rule *r, const char *anchor, 823 const char *anchor_call, uint32_t ticket, uint32_t pool_ticket) 824 { 825 struct pfioc_nv nv; 826 uint64_t timeouts[PFTM_MAX]; 827 uint64_t set_prio[2]; 828 nvlist_t *nvl, *nvlr; 829 size_t labelcount; 830 int ret; 831 832 nvl = nvlist_create(0); 833 nvlr = nvlist_create(0); 834 835 nvlist_add_number(nvl, "ticket", ticket); 836 nvlist_add_number(nvl, "pool_ticket", pool_ticket); 837 nvlist_add_string(nvl, "anchor", anchor); 838 nvlist_add_string(nvl, "anchor_call", anchor_call); 839 840 nvlist_add_number(nvlr, "nr", r->nr); 841 pfctl_nv_add_rule_addr(nvlr, "src", &r->src); 842 pfctl_nv_add_rule_addr(nvlr, "dst", &r->dst); 843 844 labelcount = 0; 845 while (r->label[labelcount][0] != 0 && 846 labelcount < PF_RULE_MAX_LABEL_COUNT) { 847 nvlist_append_string_array(nvlr, "labels", 848 r->label[labelcount]); 849 labelcount++; 850 } 851 nvlist_add_number(nvlr, "ridentifier", r->ridentifier); 852 853 nvlist_add_string(nvlr, "ifname", r->ifname); 854 nvlist_add_string(nvlr, "qname", r->qname); 855 nvlist_add_string(nvlr, "pqname", r->pqname); 856 nvlist_add_string(nvlr, "tagname", r->tagname); 857 nvlist_add_string(nvlr, "match_tagname", r->match_tagname); 858 nvlist_add_string(nvlr, "overload_tblname", r->overload_tblname); 859 860 pfctl_nv_add_pool(nvlr, "rpool", &r->rpool); 861 862 nvlist_add_number(nvlr, "os_fingerprint", r->os_fingerprint); 863 864 nvlist_add_number(nvlr, "rtableid", r->rtableid); 865 for (int i = 0; i < PFTM_MAX; i++) 866 timeouts[i] = r->timeout[i]; 867 nvlist_add_number_array(nvlr, "timeout", timeouts, PFTM_MAX); 868 nvlist_add_number(nvlr, "max_states", r->max_states); 869 nvlist_add_number(nvlr, "max_src_nodes", r->max_src_nodes); 870 nvlist_add_number(nvlr, "max_src_states", r->max_src_states); 871 nvlist_add_number(nvlr, "max_src_conn", r->max_src_conn); 872 nvlist_add_number(nvlr, "max_src_conn_rate.limit", 873 r->max_src_conn_rate.limit); 874 nvlist_add_number(nvlr, "max_src_conn_rate.seconds", 875 r->max_src_conn_rate.seconds); 876 nvlist_add_number(nvlr, "dnpipe", r->dnpipe); 877 nvlist_add_number(nvlr, "dnrpipe", r->dnrpipe); 878 nvlist_add_number(nvlr, "dnflags", r->free_flags); 879 nvlist_add_number(nvlr, "prob", r->prob); 880 nvlist_add_number(nvlr, "cuid", r->cuid); 881 nvlist_add_number(nvlr, "cpid", r->cpid); 882 883 nvlist_add_number(nvlr, "return_icmp", r->return_icmp); 884 nvlist_add_number(nvlr, "return_icmp6", r->return_icmp6); 885 886 nvlist_add_number(nvlr, "max_mss", r->max_mss); 887 nvlist_add_number(nvlr, "scrub_flags", r->scrub_flags); 888 889 pfctl_nv_add_uid(nvlr, "uid", &r->uid); 890 pfctl_nv_add_uid(nvlr, "gid", (const struct pf_rule_uid *)&r->gid); 891 892 nvlist_add_number(nvlr, "rule_flag", r->rule_flag); 893 nvlist_add_number(nvlr, "action", r->action); 894 nvlist_add_number(nvlr, "direction", r->direction); 895 nvlist_add_number(nvlr, "log", r->log); 896 nvlist_add_number(nvlr, "logif", r->logif); 897 nvlist_add_number(nvlr, "quick", r->quick); 898 nvlist_add_number(nvlr, "ifnot", r->ifnot); 899 nvlist_add_number(nvlr, "match_tag_not", r->match_tag_not); 900 nvlist_add_number(nvlr, "natpass", r->natpass); 901 902 nvlist_add_number(nvlr, "keep_state", r->keep_state); 903 nvlist_add_number(nvlr, "af", r->af); 904 nvlist_add_number(nvlr, "proto", r->proto); 905 nvlist_add_number(nvlr, "type", r->type); 906 nvlist_add_number(nvlr, "code", r->code); 907 nvlist_add_number(nvlr, "flags", r->flags); 908 nvlist_add_number(nvlr, "flagset", r->flagset); 909 nvlist_add_number(nvlr, "min_ttl", r->min_ttl); 910 nvlist_add_number(nvlr, "allow_opts", r->allow_opts); 911 nvlist_add_number(nvlr, "rt", r->rt); 912 nvlist_add_number(nvlr, "return_ttl", r->return_ttl); 913 nvlist_add_number(nvlr, "tos", r->tos); 914 nvlist_add_number(nvlr, "set_tos", r->set_tos); 915 nvlist_add_number(nvlr, "anchor_relative", r->anchor_relative); 916 nvlist_add_number(nvlr, "anchor_wildcard", r->anchor_wildcard); 917 918 nvlist_add_number(nvlr, "flush", r->flush); 919 920 nvlist_add_number(nvlr, "prio", r->prio); 921 set_prio[0] = r->set_prio[0]; 922 set_prio[1] = r->set_prio[1]; 923 nvlist_add_number_array(nvlr, "set_prio", set_prio, 2); 924 925 pfctl_nv_add_divert(nvlr, "divert", r); 926 927 nvlist_add_nvlist(nvl, "rule", nvlr); 928 nvlist_destroy(nvlr); 929 930 /* Now do the call. */ 931 nv.data = nvlist_pack(nvl, &nv.len); 932 nv.size = nv.len; 933 934 ret = ioctl(dev, DIOCADDRULENV, &nv); 935 if (ret == -1) 936 ret = errno; 937 938 free(nv.data); 939 nvlist_destroy(nvl); 940 941 return (ret); 942 } 943 944 int 945 pfctl_get_rules_info(int dev, struct pfctl_rules_info *rules, uint32_t ruleset, 946 const char *path) 947 { 948 struct pfioc_rule pr; 949 int ret; 950 951 bzero(&pr, sizeof(pr)); 952 if (strlcpy(pr.anchor, path, sizeof(pr.anchor)) >= sizeof(pr.anchor)) 953 return (E2BIG); 954 955 pr.rule.action = ruleset; 956 ret = ioctl(dev, DIOCGETRULES, &pr); 957 if (ret != 0) 958 return (ret); 959 960 rules->nr = pr.nr; 961 rules->ticket = pr.ticket; 962 963 return (0); 964 } 965 966 int 967 pfctl_get_rule(int dev, uint32_t nr, uint32_t ticket, const char *anchor, 968 uint32_t ruleset, struct pfctl_rule *rule, char *anchor_call) 969 { 970 return (pfctl_get_clear_rule(dev, nr, ticket, anchor, ruleset, rule, 971 anchor_call, false)); 972 } 973 974 int pfctl_get_clear_rule(int dev, uint32_t nr, uint32_t ticket, 975 const char *anchor, uint32_t ruleset, struct pfctl_rule *rule, 976 char *anchor_call, bool clear) 977 { 978 nvlist_t *nvl; 979 int ret; 980 981 nvl = nvlist_create(0); 982 if (nvl == 0) 983 return (ENOMEM); 984 985 nvlist_add_number(nvl, "nr", nr); 986 nvlist_add_number(nvl, "ticket", ticket); 987 nvlist_add_string(nvl, "anchor", anchor); 988 nvlist_add_number(nvl, "ruleset", ruleset); 989 990 if (clear) 991 nvlist_add_bool(nvl, "clear_counter", true); 992 993 if ((ret = pfctl_do_ioctl(dev, DIOCGETRULENV, 8192, &nvl)) != 0) 994 return (ret); 995 996 pf_nvrule_to_rule(nvlist_get_nvlist(nvl, "rule"), rule); 997 998 if (anchor_call) 999 strlcpy(anchor_call, nvlist_get_string(nvl, "anchor_call"), 1000 MAXPATHLEN); 1001 1002 nvlist_destroy(nvl); 1003 1004 return (0); 1005 } 1006 1007 int 1008 pfctl_set_keepcounters(int dev, bool keep) 1009 { 1010 struct pfioc_nv nv; 1011 nvlist_t *nvl; 1012 int ret; 1013 1014 nvl = nvlist_create(0); 1015 1016 nvlist_add_bool(nvl, "keep_counters", keep); 1017 1018 nv.data = nvlist_pack(nvl, &nv.len); 1019 nv.size = nv.len; 1020 1021 nvlist_destroy(nvl); 1022 1023 ret = ioctl(dev, DIOCKEEPCOUNTERS, &nv); 1024 1025 free(nv.data); 1026 return (ret); 1027 } 1028 1029 static void 1030 pfctl_nv_add_state_cmp(nvlist_t *nvl, const char *name, 1031 const struct pfctl_state_cmp *cmp) 1032 { 1033 nvlist_t *nv; 1034 1035 nv = nvlist_create(0); 1036 1037 nvlist_add_number(nv, "id", cmp->id); 1038 nvlist_add_number(nv, "creatorid", htonl(cmp->creatorid)); 1039 nvlist_add_number(nv, "direction", cmp->direction); 1040 1041 nvlist_add_nvlist(nvl, name, nv); 1042 nvlist_destroy(nv); 1043 } 1044 1045 static void 1046 pf_state_key_export_to_state_key(struct pfctl_state_key *ps, 1047 const struct pf_state_key_export *s) 1048 { 1049 bcopy(s->addr, ps->addr, sizeof(ps->addr[0]) * 2); 1050 ps->port[0] = s->port[0]; 1051 ps->port[1] = s->port[1]; 1052 } 1053 1054 static void 1055 pf_state_peer_export_to_state_peer(struct pfctl_state_peer *ps, 1056 const struct pf_state_peer_export *s) 1057 { 1058 /* Ignore scrub. */ 1059 ps->seqlo = s->seqlo; 1060 ps->seqhi = s->seqhi; 1061 ps->seqdiff = s->seqdiff; 1062 /* Ignore max_win & mss */ 1063 ps->state = s->state; 1064 ps->wscale = s->wscale; 1065 } 1066 1067 static void 1068 pf_state_export_to_state(struct pfctl_state *ps, const struct pf_state_export *s) 1069 { 1070 assert(s->version >= PF_STATE_VERSION); 1071 1072 ps->id = s->id; 1073 strlcpy(ps->ifname, s->ifname, sizeof(ps->ifname)); 1074 strlcpy(ps->orig_ifname, s->orig_ifname, sizeof(ps->orig_ifname)); 1075 pf_state_key_export_to_state_key(&ps->key[0], &s->key[0]); 1076 pf_state_key_export_to_state_key(&ps->key[1], &s->key[1]); 1077 pf_state_peer_export_to_state_peer(&ps->src, &s->src); 1078 pf_state_peer_export_to_state_peer(&ps->dst, &s->dst); 1079 bcopy(&s->rt_addr, &ps->rt_addr, sizeof(ps->rt_addr)); 1080 ps->rule = ntohl(s->rule); 1081 ps->anchor = ntohl(s->anchor); 1082 ps->nat_rule = ntohl(s->nat_rule); 1083 ps->creation = ntohl(s->creation); 1084 ps->expire = ntohl(s->expire); 1085 ps->packets[0] = s->packets[0]; 1086 ps->packets[1] = s->packets[1]; 1087 ps->bytes[0] = s->bytes[0]; 1088 ps->bytes[1] = s->bytes[1]; 1089 ps->creatorid = ntohl(s->creatorid); 1090 ps->key[0].proto = s->proto; 1091 ps->key[1].proto = s->proto; 1092 ps->key[0].af = s->af; 1093 ps->key[1].af = s->af; 1094 ps->direction = s->direction; 1095 ps->state_flags = s->state_flags; 1096 ps->sync_flags = s->sync_flags; 1097 } 1098 1099 int 1100 pfctl_get_states(int dev, struct pfctl_states *states) 1101 { 1102 struct pfioc_states_v2 ps; 1103 struct pf_state_export *p; 1104 char *inbuf = NULL, *newinbuf = NULL; 1105 unsigned int len = 0; 1106 int i, error; 1107 1108 bzero(&ps, sizeof(ps)); 1109 ps.ps_req_version = PF_STATE_VERSION; 1110 1111 bzero(states, sizeof(*states)); 1112 TAILQ_INIT(&states->states); 1113 1114 for (;;) { 1115 ps.ps_len = len; 1116 if (len) { 1117 newinbuf = realloc(inbuf, len); 1118 if (newinbuf == NULL) 1119 return (ENOMEM); 1120 ps.ps_buf = inbuf = newinbuf; 1121 } 1122 if ((error = ioctl(dev, DIOCGETSTATESV2, &ps)) < 0) { 1123 free(inbuf); 1124 return (error); 1125 } 1126 if (ps.ps_len + sizeof(struct pfioc_states_v2) < len) 1127 break; 1128 if (len == 0 && ps.ps_len == 0) 1129 goto out; 1130 if (len == 0 && ps.ps_len != 0) 1131 len = ps.ps_len; 1132 if (ps.ps_len == 0) 1133 goto out; /* no states */ 1134 len *= 2; 1135 } 1136 p = ps.ps_states; 1137 1138 for (i = 0; i < ps.ps_len; i += sizeof(*p), p++) { 1139 struct pfctl_state *s = malloc(sizeof(*s)); 1140 if (s == NULL) { 1141 pfctl_free_states(states); 1142 error = ENOMEM; 1143 goto out; 1144 } 1145 1146 pf_state_export_to_state(s, p); 1147 TAILQ_INSERT_TAIL(&states->states, s, entry); 1148 } 1149 1150 out: 1151 free(inbuf); 1152 return (error); 1153 } 1154 1155 void 1156 pfctl_free_states(struct pfctl_states *states) 1157 { 1158 struct pfctl_state *s, *tmp; 1159 1160 TAILQ_FOREACH_SAFE(s, &states->states, entry, tmp) { 1161 free(s); 1162 } 1163 1164 bzero(states, sizeof(*states)); 1165 } 1166 1167 static int 1168 _pfctl_clear_states(int dev, const struct pfctl_kill *kill, 1169 unsigned int *killed, uint64_t ioctlval) 1170 { 1171 struct pfioc_nv nv; 1172 nvlist_t *nvl; 1173 int ret; 1174 1175 nvl = nvlist_create(0); 1176 1177 pfctl_nv_add_state_cmp(nvl, "cmp", &kill->cmp); 1178 nvlist_add_number(nvl, "af", kill->af); 1179 nvlist_add_number(nvl, "proto", kill->proto); 1180 pfctl_nv_add_rule_addr(nvl, "src", &kill->src); 1181 pfctl_nv_add_rule_addr(nvl, "dst", &kill->dst); 1182 pfctl_nv_add_rule_addr(nvl, "rt_addr", &kill->rt_addr); 1183 nvlist_add_string(nvl, "ifname", kill->ifname); 1184 nvlist_add_string(nvl, "label", kill->label); 1185 nvlist_add_bool(nvl, "kill_match", kill->kill_match); 1186 1187 if ((ret = pfctl_do_ioctl(dev, ioctlval, 1024, &nvl)) != 0) 1188 return (ret); 1189 1190 if (killed) 1191 *killed = nvlist_get_number(nvl, "killed"); 1192 1193 nvlist_destroy(nvl); 1194 free(nv.data); 1195 1196 return (ret); 1197 } 1198 1199 int 1200 pfctl_clear_states(int dev, const struct pfctl_kill *kill, 1201 unsigned int *killed) 1202 { 1203 return (_pfctl_clear_states(dev, kill, killed, DIOCCLRSTATESNV)); 1204 } 1205 1206 int 1207 pfctl_kill_states(int dev, const struct pfctl_kill *kill, unsigned int *killed) 1208 { 1209 return (_pfctl_clear_states(dev, kill, killed, DIOCKILLSTATESNV)); 1210 } 1211 1212 int 1213 pfctl_clear_rules(int dev, const char *anchorname) 1214 { 1215 struct pfioc_trans trans; 1216 struct pfioc_trans_e transe[2]; 1217 int ret; 1218 1219 bzero(&trans, sizeof(trans)); 1220 bzero(&transe, sizeof(transe)); 1221 1222 transe[0].rs_num = PF_RULESET_SCRUB; 1223 if (strlcpy(transe[0].anchor, anchorname, sizeof(transe[0].anchor)) 1224 >= sizeof(transe[0].anchor)) 1225 return (E2BIG); 1226 1227 transe[1].rs_num = PF_RULESET_FILTER; 1228 if (strlcpy(transe[1].anchor, anchorname, sizeof(transe[1].anchor)) 1229 >= sizeof(transe[1].anchor)) 1230 return (E2BIG); 1231 1232 trans.size = 2; 1233 trans.esize = sizeof(transe[0]); 1234 trans.array = transe; 1235 1236 ret = ioctl(dev, DIOCXBEGIN, &trans); 1237 if (ret != 0) 1238 return (ret); 1239 return ioctl(dev, DIOCXCOMMIT, &trans); 1240 } 1241 1242 int 1243 pfctl_clear_nat(int dev, const char *anchorname) 1244 { 1245 struct pfioc_trans trans; 1246 struct pfioc_trans_e transe[3]; 1247 int ret; 1248 1249 bzero(&trans, sizeof(trans)); 1250 bzero(&transe, sizeof(transe)); 1251 1252 transe[0].rs_num = PF_RULESET_NAT; 1253 if (strlcpy(transe[0].anchor, anchorname, sizeof(transe[0].anchor)) 1254 >= sizeof(transe[0].anchor)) 1255 return (E2BIG); 1256 1257 transe[1].rs_num = PF_RULESET_BINAT; 1258 if (strlcpy(transe[1].anchor, anchorname, sizeof(transe[1].anchor)) 1259 >= sizeof(transe[0].anchor)) 1260 return (E2BIG); 1261 1262 transe[2].rs_num = PF_RULESET_RDR; 1263 if (strlcpy(transe[2].anchor, anchorname, sizeof(transe[2].anchor)) 1264 >= sizeof(transe[2].anchor)) 1265 return (E2BIG); 1266 1267 trans.size = 3; 1268 trans.esize = sizeof(transe[0]); 1269 trans.array = transe; 1270 1271 ret = ioctl(dev, DIOCXBEGIN, &trans); 1272 if (ret != 0) 1273 return (ret); 1274 return ioctl(dev, DIOCXCOMMIT, &trans); 1275 } 1276 int 1277 pfctl_clear_eth_rules(int dev, const char *anchorname) 1278 { 1279 struct pfioc_trans trans; 1280 struct pfioc_trans_e transe; 1281 int ret; 1282 1283 bzero(&trans, sizeof(trans)); 1284 bzero(&transe, sizeof(transe)); 1285 1286 transe.rs_num = PF_RULESET_ETH; 1287 if (strlcpy(transe.anchor, anchorname, sizeof(transe.anchor)) 1288 >= sizeof(transe.anchor)) 1289 return (E2BIG); 1290 1291 trans.size = 1; 1292 trans.esize = sizeof(transe); 1293 trans.array = &transe; 1294 1295 ret = ioctl(dev, DIOCXBEGIN, &trans); 1296 if (ret != 0) 1297 return (ret); 1298 return ioctl(dev, DIOCXCOMMIT, &trans); 1299 } 1300 1301 static int 1302 pfctl_get_limit(int dev, const int index, uint *limit) 1303 { 1304 struct pfioc_limit pl; 1305 1306 bzero(&pl, sizeof(pl)); 1307 pl.index = index; 1308 1309 if (ioctl(dev, DIOCGETLIMIT, &pl) == -1) 1310 return (errno); 1311 1312 *limit = pl.limit; 1313 1314 return (0); 1315 } 1316 1317 int 1318 pfctl_set_syncookies(int dev, const struct pfctl_syncookies *s) 1319 { 1320 struct pfioc_nv nv; 1321 nvlist_t *nvl; 1322 int ret; 1323 uint state_limit; 1324 1325 ret = pfctl_get_limit(dev, PF_LIMIT_STATES, &state_limit); 1326 if (ret != 0) 1327 return (ret); 1328 1329 nvl = nvlist_create(0); 1330 1331 nvlist_add_bool(nvl, "enabled", s->mode != PFCTL_SYNCOOKIES_NEVER); 1332 nvlist_add_bool(nvl, "adaptive", s->mode == PFCTL_SYNCOOKIES_ADAPTIVE); 1333 nvlist_add_number(nvl, "highwater", state_limit * s->highwater / 100); 1334 nvlist_add_number(nvl, "lowwater", state_limit * s->lowwater / 100); 1335 1336 nv.data = nvlist_pack(nvl, &nv.len); 1337 nv.size = nv.len; 1338 nvlist_destroy(nvl); 1339 nvl = NULL; 1340 1341 ret = ioctl(dev, DIOCSETSYNCOOKIES, &nv); 1342 1343 free(nv.data); 1344 return (ret); 1345 } 1346 1347 int 1348 pfctl_get_syncookies(int dev, struct pfctl_syncookies *s) 1349 { 1350 nvlist_t *nvl; 1351 int ret; 1352 uint state_limit; 1353 bool enabled, adaptive; 1354 1355 ret = pfctl_get_limit(dev, PF_LIMIT_STATES, &state_limit); 1356 if (ret != 0) 1357 return (ret); 1358 1359 bzero(s, sizeof(*s)); 1360 1361 nvl = nvlist_create(0); 1362 1363 if ((ret = pfctl_do_ioctl(dev, DIOCGETSYNCOOKIES, 256, &nvl)) != 0) 1364 return (errno); 1365 1366 enabled = nvlist_get_bool(nvl, "enabled"); 1367 adaptive = nvlist_get_bool(nvl, "adaptive"); 1368 1369 if (enabled) { 1370 if (adaptive) 1371 s->mode = PFCTL_SYNCOOKIES_ADAPTIVE; 1372 else 1373 s->mode = PFCTL_SYNCOOKIES_ALWAYS; 1374 } else { 1375 s->mode = PFCTL_SYNCOOKIES_NEVER; 1376 } 1377 1378 s->highwater = nvlist_get_number(nvl, "highwater") * 100 / state_limit; 1379 s->lowwater = nvlist_get_number(nvl, "lowwater") * 100 / state_limit; 1380 1381 nvlist_destroy(nvl); 1382 1383 return (0); 1384 } 1385 1386 int 1387 pfctl_table_add_addrs(int dev, struct pfr_table *tbl, struct pfr_addr 1388 *addr, int size, int *nadd, int flags) 1389 { 1390 struct pfioc_table io; 1391 1392 if (tbl == NULL || size < 0 || (size && addr == NULL)) { 1393 return (EINVAL); 1394 } 1395 bzero(&io, sizeof io); 1396 io.pfrio_flags = flags; 1397 io.pfrio_table = *tbl; 1398 io.pfrio_buffer = addr; 1399 io.pfrio_esize = sizeof(*addr); 1400 io.pfrio_size = size; 1401 1402 if (ioctl(dev, DIOCRADDADDRS, &io)) 1403 return (errno); 1404 if (nadd != NULL) 1405 *nadd = io.pfrio_nadd; 1406 return (0); 1407 } 1408 1409 int 1410 pfctl_table_del_addrs(int dev, struct pfr_table *tbl, struct pfr_addr 1411 *addr, int size, int *ndel, int flags) 1412 { 1413 struct pfioc_table io; 1414 1415 if (tbl == NULL || size < 0 || (size && addr == NULL)) { 1416 return (EINVAL); 1417 } 1418 bzero(&io, sizeof io); 1419 io.pfrio_flags = flags; 1420 io.pfrio_table = *tbl; 1421 io.pfrio_buffer = addr; 1422 io.pfrio_esize = sizeof(*addr); 1423 io.pfrio_size = size; 1424 1425 if (ioctl(dev, DIOCRDELADDRS, &io)) 1426 return (errno); 1427 if (ndel != NULL) 1428 *ndel = io.pfrio_ndel; 1429 return (0); 1430 } 1431 1432 int 1433 pfctl_table_set_addrs(int dev, struct pfr_table *tbl, struct pfr_addr 1434 *addr, int size, int *size2, int *nadd, int *ndel, int *nchange, int flags) 1435 { 1436 struct pfioc_table io; 1437 1438 if (tbl == NULL || size < 0 || (size && addr == NULL)) { 1439 return (EINVAL); 1440 } 1441 bzero(&io, sizeof io); 1442 io.pfrio_flags = flags; 1443 io.pfrio_table = *tbl; 1444 io.pfrio_buffer = addr; 1445 io.pfrio_esize = sizeof(*addr); 1446 io.pfrio_size = size; 1447 io.pfrio_size2 = (size2 != NULL) ? *size2 : 0; 1448 if (ioctl(dev, DIOCRSETADDRS, &io)) 1449 return (-1); 1450 if (nadd != NULL) 1451 *nadd = io.pfrio_nadd; 1452 if (ndel != NULL) 1453 *ndel = io.pfrio_ndel; 1454 if (nchange != NULL) 1455 *nchange = io.pfrio_nchange; 1456 if (size2 != NULL) 1457 *size2 = io.pfrio_size2; 1458 return (0); 1459 } 1460 1461 int pfctl_table_get_addrs(int dev, struct pfr_table *tbl, struct pfr_addr *addr, 1462 int *size, int flags) 1463 { 1464 struct pfioc_table io; 1465 1466 if (tbl == NULL || size == NULL || *size < 0 || 1467 (*size && addr == NULL)) { 1468 return (EINVAL); 1469 } 1470 bzero(&io, sizeof io); 1471 io.pfrio_flags = flags; 1472 io.pfrio_table = *tbl; 1473 io.pfrio_buffer = addr; 1474 io.pfrio_esize = sizeof(*addr); 1475 io.pfrio_size = *size; 1476 if (ioctl(dev, DIOCRGETADDRS, &io)) 1477 return (-1); 1478 *size = io.pfrio_size; 1479 return (0); 1480 } 1481