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 status->syncookies_active = nvlist_get_bool(nvl, "syncookies_active"); 228 status->reass = nvlist_get_number(nvl, "reass"); 229 230 strlcpy(status->ifname, nvlist_get_string(nvl, "ifname"), 231 IFNAMSIZ); 232 chksum = nvlist_get_binary(nvl, "chksum", &len); 233 assert(len == PF_MD5_DIGEST_LENGTH); 234 memcpy(status->pf_chksum, chksum, len); 235 236 _pfctl_get_status_counters(nvlist_get_nvlist(nvl, "counters"), 237 &status->counters); 238 _pfctl_get_status_counters(nvlist_get_nvlist(nvl, "lcounters"), 239 &status->lcounters); 240 _pfctl_get_status_counters(nvlist_get_nvlist(nvl, "fcounters"), 241 &status->fcounters); 242 _pfctl_get_status_counters(nvlist_get_nvlist(nvl, "scounters"), 243 &status->scounters); 244 245 pf_nvuint_64_array(nvl, "pcounters", 2 * 2 * 3, 246 (uint64_t *)status->pcounters, NULL); 247 pf_nvuint_64_array(nvl, "bcounters", 2 * 2, 248 (uint64_t *)status->bcounters, NULL); 249 250 nvlist_destroy(nvl); 251 252 return (status); 253 } 254 255 void 256 pfctl_free_status(struct pfctl_status *status) 257 { 258 struct pfctl_status_counter *c, *tmp; 259 260 TAILQ_FOREACH_SAFE(c, &status->counters, entry, tmp) { 261 free(c->name); 262 free(c); 263 } 264 TAILQ_FOREACH_SAFE(c, &status->lcounters, entry, tmp) { 265 free(c->name); 266 free(c); 267 } 268 TAILQ_FOREACH_SAFE(c, &status->fcounters, entry, tmp) { 269 free(c->name); 270 free(c); 271 } 272 TAILQ_FOREACH_SAFE(c, &status->scounters, entry, tmp) { 273 free(c->name); 274 free(c); 275 } 276 277 free(status); 278 } 279 280 static void 281 pfctl_nv_add_addr(nvlist_t *nvparent, const char *name, 282 const struct pf_addr *addr) 283 { 284 nvlist_t *nvl = nvlist_create(0); 285 286 nvlist_add_binary(nvl, "addr", addr, sizeof(*addr)); 287 288 nvlist_add_nvlist(nvparent, name, nvl); 289 nvlist_destroy(nvl); 290 } 291 292 static void 293 pf_nvaddr_to_addr(const nvlist_t *nvl, struct pf_addr *addr) 294 { 295 size_t len; 296 const void *data; 297 298 data = nvlist_get_binary(nvl, "addr", &len); 299 assert(len == sizeof(struct pf_addr)); 300 memcpy(addr, data, len); 301 } 302 303 static void 304 pfctl_nv_add_addr_wrap(nvlist_t *nvparent, const char *name, 305 const struct pf_addr_wrap *addr) 306 { 307 nvlist_t *nvl = nvlist_create(0); 308 309 nvlist_add_number(nvl, "type", addr->type); 310 nvlist_add_number(nvl, "iflags", addr->iflags); 311 if (addr->type == PF_ADDR_DYNIFTL) 312 nvlist_add_string(nvl, "ifname", addr->v.ifname); 313 if (addr->type == PF_ADDR_TABLE) 314 nvlist_add_string(nvl, "tblname", addr->v.tblname); 315 pfctl_nv_add_addr(nvl, "addr", &addr->v.a.addr); 316 pfctl_nv_add_addr(nvl, "mask", &addr->v.a.mask); 317 318 nvlist_add_nvlist(nvparent, name, nvl); 319 nvlist_destroy(nvl); 320 } 321 322 static void 323 pf_nvaddr_wrap_to_addr_wrap(const nvlist_t *nvl, struct pf_addr_wrap *addr) 324 { 325 bzero(addr, sizeof(*addr)); 326 327 addr->type = nvlist_get_number(nvl, "type"); 328 addr->iflags = nvlist_get_number(nvl, "iflags"); 329 if (addr->type == PF_ADDR_DYNIFTL) { 330 strlcpy(addr->v.ifname, nvlist_get_string(nvl, "ifname"), 331 IFNAMSIZ); 332 addr->p.dyncnt = nvlist_get_number(nvl, "dyncnt"); 333 } 334 if (addr->type == PF_ADDR_TABLE) { 335 strlcpy(addr->v.tblname, nvlist_get_string(nvl, "tblname"), 336 PF_TABLE_NAME_SIZE); 337 addr->p.tblcnt = nvlist_get_number(nvl, "tblcnt"); 338 } 339 340 pf_nvaddr_to_addr(nvlist_get_nvlist(nvl, "addr"), &addr->v.a.addr); 341 pf_nvaddr_to_addr(nvlist_get_nvlist(nvl, "mask"), &addr->v.a.mask); 342 } 343 344 static void 345 pfctl_nv_add_rule_addr(nvlist_t *nvparent, const char *name, 346 const struct pf_rule_addr *addr) 347 { 348 uint64_t ports[2]; 349 nvlist_t *nvl = nvlist_create(0); 350 351 pfctl_nv_add_addr_wrap(nvl, "addr", &addr->addr); 352 ports[0] = addr->port[0]; 353 ports[1] = addr->port[1]; 354 nvlist_add_number_array(nvl, "port", ports, 2); 355 nvlist_add_number(nvl, "neg", addr->neg); 356 nvlist_add_number(nvl, "port_op", addr->port_op); 357 358 nvlist_add_nvlist(nvparent, name, nvl); 359 nvlist_destroy(nvl); 360 } 361 362 static void 363 pf_nvrule_addr_to_rule_addr(const nvlist_t *nvl, struct pf_rule_addr *addr) 364 { 365 pf_nvaddr_wrap_to_addr_wrap(nvlist_get_nvlist(nvl, "addr"), &addr->addr); 366 367 pf_nvuint_16_array(nvl, "port", 2, addr->port, NULL); 368 addr->neg = nvlist_get_number(nvl, "neg"); 369 addr->port_op = nvlist_get_number(nvl, "port_op"); 370 } 371 372 static void 373 pfctl_nv_add_mape(nvlist_t *nvparent, const char *name, 374 const struct pf_mape_portset *mape) 375 { 376 nvlist_t *nvl = nvlist_create(0); 377 378 nvlist_add_number(nvl, "offset", mape->offset); 379 nvlist_add_number(nvl, "psidlen", mape->psidlen); 380 nvlist_add_number(nvl, "psid", mape->psid); 381 nvlist_add_nvlist(nvparent, name, nvl); 382 nvlist_destroy(nvl); 383 } 384 385 static void 386 pfctl_nv_add_pool(nvlist_t *nvparent, const char *name, 387 const struct pfctl_pool *pool) 388 { 389 uint64_t ports[2]; 390 nvlist_t *nvl = nvlist_create(0); 391 392 nvlist_add_binary(nvl, "key", &pool->key, sizeof(pool->key)); 393 pfctl_nv_add_addr(nvl, "counter", &pool->counter); 394 nvlist_add_number(nvl, "tblidx", pool->tblidx); 395 396 ports[0] = pool->proxy_port[0]; 397 ports[1] = pool->proxy_port[1]; 398 nvlist_add_number_array(nvl, "proxy_port", ports, 2); 399 nvlist_add_number(nvl, "opts", pool->opts); 400 pfctl_nv_add_mape(nvl, "mape", &pool->mape); 401 402 nvlist_add_nvlist(nvparent, name, nvl); 403 nvlist_destroy(nvl); 404 } 405 406 static void 407 pf_nvmape_to_mape(const nvlist_t *nvl, struct pf_mape_portset *mape) 408 { 409 mape->offset = nvlist_get_number(nvl, "offset"); 410 mape->psidlen = nvlist_get_number(nvl, "psidlen"); 411 mape->psid = nvlist_get_number(nvl, "psid"); 412 } 413 414 static void 415 pf_nvpool_to_pool(const nvlist_t *nvl, struct pfctl_pool *pool) 416 { 417 size_t len; 418 const void *data; 419 420 data = nvlist_get_binary(nvl, "key", &len); 421 assert(len == sizeof(pool->key)); 422 memcpy(&pool->key, data, len); 423 424 pf_nvaddr_to_addr(nvlist_get_nvlist(nvl, "counter"), &pool->counter); 425 426 pool->tblidx = nvlist_get_number(nvl, "tblidx"); 427 pf_nvuint_16_array(nvl, "proxy_port", 2, pool->proxy_port, NULL); 428 pool->opts = nvlist_get_number(nvl, "opts"); 429 430 if (nvlist_exists_nvlist(nvl, "mape")) 431 pf_nvmape_to_mape(nvlist_get_nvlist(nvl, "mape"), &pool->mape); 432 } 433 434 static void 435 pfctl_nv_add_uid(nvlist_t *nvparent, const char *name, 436 const struct pf_rule_uid *uid) 437 { 438 uint64_t uids[2]; 439 nvlist_t *nvl = nvlist_create(0); 440 441 uids[0] = uid->uid[0]; 442 uids[1] = uid->uid[1]; 443 nvlist_add_number_array(nvl, "uid", uids, 2); 444 nvlist_add_number(nvl, "op", uid->op); 445 446 nvlist_add_nvlist(nvparent, name, nvl); 447 nvlist_destroy(nvl); 448 } 449 450 static void 451 pf_nvrule_uid_to_rule_uid(const nvlist_t *nvl, struct pf_rule_uid *uid) 452 { 453 pf_nvuint_32_array(nvl, "uid", 2, uid->uid, NULL); 454 uid->op = nvlist_get_number(nvl, "op"); 455 } 456 457 static void 458 pfctl_nv_add_divert(nvlist_t *nvparent, const char *name, 459 const struct pfctl_rule *r) 460 { 461 nvlist_t *nvl = nvlist_create(0); 462 463 pfctl_nv_add_addr(nvl, "addr", &r->divert.addr); 464 nvlist_add_number(nvl, "port", r->divert.port); 465 466 nvlist_add_nvlist(nvparent, name, nvl); 467 nvlist_destroy(nvl); 468 } 469 470 static void 471 pf_nvdivert_to_divert(const nvlist_t *nvl, struct pfctl_rule *rule) 472 { 473 pf_nvaddr_to_addr(nvlist_get_nvlist(nvl, "addr"), &rule->divert.addr); 474 rule->divert.port = nvlist_get_number(nvl, "port"); 475 } 476 477 static void 478 pf_nvrule_to_rule(const nvlist_t *nvl, struct pfctl_rule *rule) 479 { 480 const uint64_t *skip; 481 const char *const *labels; 482 size_t skipcount, labelcount; 483 484 rule->nr = nvlist_get_number(nvl, "nr"); 485 486 pf_nvrule_addr_to_rule_addr(nvlist_get_nvlist(nvl, "src"), &rule->src); 487 pf_nvrule_addr_to_rule_addr(nvlist_get_nvlist(nvl, "dst"), &rule->dst); 488 489 skip = nvlist_get_number_array(nvl, "skip", &skipcount); 490 assert(skip); 491 assert(skipcount == PF_SKIP_COUNT); 492 for (int i = 0; i < PF_SKIP_COUNT; i++) 493 rule->skip[i].nr = skip[i]; 494 495 labels = nvlist_get_string_array(nvl, "labels", &labelcount); 496 assert(labelcount <= PF_RULE_MAX_LABEL_COUNT); 497 for (size_t i = 0; i < labelcount; i++) 498 strlcpy(rule->label[i], labels[i], PF_RULE_LABEL_SIZE); 499 rule->ridentifier = nvlist_get_number(nvl, "ridentifier"); 500 strlcpy(rule->ifname, nvlist_get_string(nvl, "ifname"), IFNAMSIZ); 501 strlcpy(rule->qname, nvlist_get_string(nvl, "qname"), PF_QNAME_SIZE); 502 strlcpy(rule->pqname, nvlist_get_string(nvl, "pqname"), PF_QNAME_SIZE); 503 strlcpy(rule->tagname, nvlist_get_string(nvl, "tagname"), 504 PF_TAG_NAME_SIZE); 505 strlcpy(rule->match_tagname, nvlist_get_string(nvl, "match_tagname"), 506 PF_TAG_NAME_SIZE); 507 508 strlcpy(rule->overload_tblname, nvlist_get_string(nvl, "overload_tblname"), 509 PF_TABLE_NAME_SIZE); 510 511 pf_nvpool_to_pool(nvlist_get_nvlist(nvl, "rpool"), &rule->rpool); 512 513 rule->evaluations = nvlist_get_number(nvl, "evaluations"); 514 pf_nvuint_64_array(nvl, "packets", 2, rule->packets, NULL); 515 pf_nvuint_64_array(nvl, "bytes", 2, rule->bytes, NULL); 516 517 if (nvlist_exists_number(nvl, "timestamp")) { 518 rule->last_active_timestamp = nvlist_get_number(nvl, "timestamp"); 519 } 520 521 rule->os_fingerprint = nvlist_get_number(nvl, "os_fingerprint"); 522 523 rule->rtableid = nvlist_get_number(nvl, "rtableid"); 524 pf_nvuint_32_array(nvl, "timeout", PFTM_MAX, rule->timeout, NULL); 525 rule->max_states = nvlist_get_number(nvl, "max_states"); 526 rule->max_src_nodes = nvlist_get_number(nvl, "max_src_nodes"); 527 rule->max_src_states = nvlist_get_number(nvl, "max_src_states"); 528 rule->max_src_conn = nvlist_get_number(nvl, "max_src_conn"); 529 rule->max_src_conn_rate.limit = 530 nvlist_get_number(nvl, "max_src_conn_rate.limit"); 531 rule->max_src_conn_rate.seconds = 532 nvlist_get_number(nvl, "max_src_conn_rate.seconds"); 533 rule->qid = nvlist_get_number(nvl, "qid"); 534 rule->pqid = nvlist_get_number(nvl, "pqid"); 535 rule->dnpipe = nvlist_get_number(nvl, "dnpipe"); 536 rule->dnrpipe = nvlist_get_number(nvl, "dnrpipe"); 537 rule->free_flags = nvlist_get_number(nvl, "dnflags"); 538 rule->prob = nvlist_get_number(nvl, "prob"); 539 rule->cuid = nvlist_get_number(nvl, "cuid"); 540 rule->cpid = nvlist_get_number(nvl, "cpid"); 541 542 rule->return_icmp = nvlist_get_number(nvl, "return_icmp"); 543 rule->return_icmp6 = nvlist_get_number(nvl, "return_icmp6"); 544 rule->max_mss = nvlist_get_number(nvl, "max_mss"); 545 rule->scrub_flags = nvlist_get_number(nvl, "scrub_flags"); 546 547 pf_nvrule_uid_to_rule_uid(nvlist_get_nvlist(nvl, "uid"), &rule->uid); 548 pf_nvrule_uid_to_rule_uid(nvlist_get_nvlist(nvl, "gid"), 549 (struct pf_rule_uid *)&rule->gid); 550 551 rule->rule_flag = nvlist_get_number(nvl, "rule_flag"); 552 rule->action = nvlist_get_number(nvl, "action"); 553 rule->direction = nvlist_get_number(nvl, "direction"); 554 rule->log = nvlist_get_number(nvl, "log"); 555 rule->logif = nvlist_get_number(nvl, "logif"); 556 rule->quick = nvlist_get_number(nvl, "quick"); 557 rule->ifnot = nvlist_get_number(nvl, "ifnot"); 558 rule->match_tag_not = nvlist_get_number(nvl, "match_tag_not"); 559 rule->natpass = nvlist_get_number(nvl, "natpass"); 560 561 rule->keep_state = nvlist_get_number(nvl, "keep_state"); 562 rule->af = nvlist_get_number(nvl, "af"); 563 rule->proto = nvlist_get_number(nvl, "proto"); 564 rule->type = nvlist_get_number(nvl, "type"); 565 rule->code = nvlist_get_number(nvl, "code"); 566 rule->flags = nvlist_get_number(nvl, "flags"); 567 rule->flagset = nvlist_get_number(nvl, "flagset"); 568 rule->min_ttl = nvlist_get_number(nvl, "min_ttl"); 569 rule->allow_opts = nvlist_get_number(nvl, "allow_opts"); 570 rule->rt = nvlist_get_number(nvl, "rt"); 571 rule->return_ttl = nvlist_get_number(nvl, "return_ttl"); 572 rule->tos = nvlist_get_number(nvl, "tos"); 573 rule->set_tos = nvlist_get_number(nvl, "set_tos"); 574 rule->anchor_relative = nvlist_get_number(nvl, "anchor_relative"); 575 rule->anchor_wildcard = nvlist_get_number(nvl, "anchor_wildcard"); 576 577 rule->flush = nvlist_get_number(nvl, "flush"); 578 rule->prio = nvlist_get_number(nvl, "prio"); 579 pf_nvuint_8_array(nvl, "set_prio", 2, rule->set_prio, NULL); 580 581 pf_nvdivert_to_divert(nvlist_get_nvlist(nvl, "divert"), rule); 582 583 rule->states_cur = nvlist_get_number(nvl, "states_cur"); 584 rule->states_tot = nvlist_get_number(nvl, "states_tot"); 585 rule->src_nodes = nvlist_get_number(nvl, "src_nodes"); 586 } 587 588 static void 589 pfctl_nveth_addr_to_eth_addr(const nvlist_t *nvl, struct pfctl_eth_addr *addr) 590 { 591 static const u_int8_t EMPTY_MAC[ETHER_ADDR_LEN] = { 0 }; 592 size_t len; 593 const void *data; 594 595 data = nvlist_get_binary(nvl, "addr", &len); 596 assert(len == sizeof(addr->addr)); 597 memcpy(addr->addr, data, sizeof(addr->addr)); 598 599 data = nvlist_get_binary(nvl, "mask", &len); 600 assert(len == sizeof(addr->mask)); 601 memcpy(addr->mask, data, sizeof(addr->mask)); 602 603 addr->neg = nvlist_get_bool(nvl, "neg"); 604 605 /* To make checks for 'is this address set?' easier. */ 606 addr->isset = memcmp(addr->addr, EMPTY_MAC, ETHER_ADDR_LEN) != 0; 607 } 608 609 static nvlist_t * 610 pfctl_eth_addr_to_nveth_addr(const struct pfctl_eth_addr *addr) 611 { 612 nvlist_t *nvl; 613 614 nvl = nvlist_create(0); 615 if (nvl == NULL) 616 return (NULL); 617 618 nvlist_add_bool(nvl, "neg", addr->neg); 619 nvlist_add_binary(nvl, "addr", &addr->addr, ETHER_ADDR_LEN); 620 nvlist_add_binary(nvl, "mask", &addr->mask, ETHER_ADDR_LEN); 621 622 return (nvl); 623 } 624 625 static void 626 pfctl_nveth_rule_to_eth_rule(const nvlist_t *nvl, struct pfctl_eth_rule *rule) 627 { 628 rule->nr = nvlist_get_number(nvl, "nr"); 629 rule->quick = nvlist_get_bool(nvl, "quick"); 630 strlcpy(rule->ifname, nvlist_get_string(nvl, "ifname"), IFNAMSIZ); 631 rule->ifnot = nvlist_get_bool(nvl, "ifnot"); 632 rule->direction = nvlist_get_number(nvl, "direction"); 633 rule->proto = nvlist_get_number(nvl, "proto"); 634 strlcpy(rule->match_tagname, nvlist_get_string(nvl, "match_tagname"), 635 PF_TAG_NAME_SIZE); 636 rule->match_tag = nvlist_get_number(nvl, "match_tag"); 637 rule->match_tag_not = nvlist_get_bool(nvl, "match_tag_not"); 638 639 pfctl_nveth_addr_to_eth_addr(nvlist_get_nvlist(nvl, "src"), 640 &rule->src); 641 pfctl_nveth_addr_to_eth_addr(nvlist_get_nvlist(nvl, "dst"), 642 &rule->dst); 643 644 pf_nvrule_addr_to_rule_addr(nvlist_get_nvlist(nvl, "ipsrc"), 645 &rule->ipsrc); 646 pf_nvrule_addr_to_rule_addr(nvlist_get_nvlist(nvl, "ipdst"), 647 &rule->ipdst); 648 649 rule->evaluations = nvlist_get_number(nvl, "evaluations"); 650 rule->packets[0] = nvlist_get_number(nvl, "packets-in"); 651 rule->packets[1] = nvlist_get_number(nvl, "packets-out"); 652 rule->bytes[0] = nvlist_get_number(nvl, "bytes-in"); 653 rule->bytes[1] = nvlist_get_number(nvl, "bytes-out"); 654 655 if (nvlist_exists_number(nvl, "timestamp")) { 656 rule->last_active_timestamp = nvlist_get_number(nvl, "timestamp"); 657 } 658 659 strlcpy(rule->qname, nvlist_get_string(nvl, "qname"), PF_QNAME_SIZE); 660 strlcpy(rule->tagname, nvlist_get_string(nvl, "tagname"), 661 PF_TAG_NAME_SIZE); 662 663 rule->dnpipe = nvlist_get_number(nvl, "dnpipe"); 664 rule->dnflags = nvlist_get_number(nvl, "dnflags"); 665 666 rule->anchor_relative = nvlist_get_number(nvl, "anchor_relative"); 667 rule->anchor_wildcard = nvlist_get_number(nvl, "anchor_wildcard"); 668 669 strlcpy(rule->bridge_to, nvlist_get_string(nvl, "bridge_to"), 670 IFNAMSIZ); 671 672 rule->action = nvlist_get_number(nvl, "action"); 673 } 674 675 int 676 pfctl_get_eth_rulesets_info(int dev, struct pfctl_eth_rulesets_info *ri, 677 const char *path) 678 { 679 nvlist_t *nvl; 680 int ret; 681 682 bzero(ri, sizeof(*ri)); 683 684 nvl = nvlist_create(0); 685 nvlist_add_string(nvl, "path", path); 686 687 if ((ret = pfctl_do_ioctl(dev, DIOCGETETHRULESETS, 256, &nvl)) != 0) 688 return (ret); 689 690 ri->nr = nvlist_get_number(nvl, "nr"); 691 692 nvlist_destroy(nvl); 693 return (0); 694 } 695 696 int 697 pfctl_get_eth_ruleset(int dev, const char *path, int nr, 698 struct pfctl_eth_ruleset_info *ri) 699 { 700 nvlist_t *nvl; 701 int ret; 702 703 bzero(ri, sizeof(*ri)); 704 705 nvl = nvlist_create(0); 706 nvlist_add_string(nvl, "path", path); 707 nvlist_add_number(nvl, "nr", nr); 708 709 if ((ret = pfctl_do_ioctl(dev, DIOCGETETHRULESET, 1024, &nvl)) != 0) 710 return (ret); 711 712 ri->nr = nvlist_get_number(nvl, "nr"); 713 strlcpy(ri->path, nvlist_get_string(nvl, "path"), MAXPATHLEN); 714 strlcpy(ri->name, nvlist_get_string(nvl, "name"), 715 PF_ANCHOR_NAME_SIZE); 716 717 return (0); 718 } 719 720 int 721 pfctl_get_eth_rules_info(int dev, struct pfctl_eth_rules_info *rules, 722 const char *path) 723 { 724 nvlist_t *nvl; 725 int ret; 726 727 bzero(rules, sizeof(*rules)); 728 729 nvl = nvlist_create(0); 730 nvlist_add_string(nvl, "anchor", path); 731 732 if ((ret = pfctl_do_ioctl(dev, DIOCGETETHRULES, 1024, &nvl)) != 0) 733 return (ret); 734 735 rules->nr = nvlist_get_number(nvl, "nr"); 736 rules->ticket = nvlist_get_number(nvl, "ticket"); 737 738 nvlist_destroy(nvl); 739 return (0); 740 } 741 742 int 743 pfctl_get_eth_rule(int dev, uint32_t nr, uint32_t ticket, 744 const char *path, struct pfctl_eth_rule *rule, bool clear, 745 char *anchor_call) 746 { 747 nvlist_t *nvl; 748 int ret; 749 750 nvl = nvlist_create(0); 751 752 nvlist_add_string(nvl, "anchor", path); 753 nvlist_add_number(nvl, "ticket", ticket); 754 nvlist_add_number(nvl, "nr", nr); 755 nvlist_add_bool(nvl, "clear", clear); 756 757 if ((ret = pfctl_do_ioctl(dev, DIOCGETETHRULE, 4096, &nvl)) != 0) 758 return (ret); 759 760 pfctl_nveth_rule_to_eth_rule(nvl, rule); 761 762 if (anchor_call) 763 strlcpy(anchor_call, nvlist_get_string(nvl, "anchor_call"), 764 MAXPATHLEN); 765 766 nvlist_destroy(nvl); 767 return (0); 768 } 769 770 int 771 pfctl_add_eth_rule(int dev, const struct pfctl_eth_rule *r, const char *anchor, 772 const char *anchor_call, uint32_t ticket) 773 { 774 struct pfioc_nv nv; 775 nvlist_t *nvl, *addr; 776 void *packed; 777 int error = 0; 778 size_t size; 779 780 nvl = nvlist_create(0); 781 782 nvlist_add_number(nvl, "ticket", ticket); 783 nvlist_add_string(nvl, "anchor", anchor); 784 nvlist_add_string(nvl, "anchor_call", anchor_call); 785 786 nvlist_add_number(nvl, "nr", r->nr); 787 nvlist_add_bool(nvl, "quick", r->quick); 788 nvlist_add_string(nvl, "ifname", r->ifname); 789 nvlist_add_bool(nvl, "ifnot", r->ifnot); 790 nvlist_add_number(nvl, "direction", r->direction); 791 nvlist_add_number(nvl, "proto", r->proto); 792 nvlist_add_string(nvl, "match_tagname", r->match_tagname); 793 nvlist_add_bool(nvl, "match_tag_not", r->match_tag_not); 794 795 addr = pfctl_eth_addr_to_nveth_addr(&r->src); 796 if (addr == NULL) { 797 nvlist_destroy(nvl); 798 return (ENOMEM); 799 } 800 nvlist_add_nvlist(nvl, "src", addr); 801 nvlist_destroy(addr); 802 803 addr = pfctl_eth_addr_to_nveth_addr(&r->dst); 804 if (addr == NULL) { 805 nvlist_destroy(nvl); 806 return (ENOMEM); 807 } 808 nvlist_add_nvlist(nvl, "dst", addr); 809 nvlist_destroy(addr); 810 811 pfctl_nv_add_rule_addr(nvl, "ipsrc", &r->ipsrc); 812 pfctl_nv_add_rule_addr(nvl, "ipdst", &r->ipdst); 813 814 nvlist_add_string(nvl, "qname", r->qname); 815 nvlist_add_string(nvl, "tagname", r->tagname); 816 nvlist_add_number(nvl, "dnpipe", r->dnpipe); 817 nvlist_add_number(nvl, "dnflags", r->dnflags); 818 819 nvlist_add_string(nvl, "bridge_to", r->bridge_to); 820 821 nvlist_add_number(nvl, "action", r->action); 822 823 packed = nvlist_pack(nvl, &size); 824 if (packed == NULL) { 825 nvlist_destroy(nvl); 826 return (ENOMEM); 827 } 828 829 nv.len = size; 830 nv.size = size; 831 nv.data = packed; 832 833 if (ioctl(dev, DIOCADDETHRULE, &nv) != 0) 834 error = errno; 835 836 free(packed); 837 nvlist_destroy(nvl); 838 839 return (error); 840 } 841 842 int 843 pfctl_add_rule(int dev, const struct pfctl_rule *r, const char *anchor, 844 const char *anchor_call, uint32_t ticket, uint32_t pool_ticket) 845 { 846 struct pfioc_nv nv; 847 uint64_t timeouts[PFTM_MAX]; 848 uint64_t set_prio[2]; 849 nvlist_t *nvl, *nvlr; 850 size_t labelcount; 851 int ret; 852 853 nvl = nvlist_create(0); 854 nvlr = nvlist_create(0); 855 856 nvlist_add_number(nvl, "ticket", ticket); 857 nvlist_add_number(nvl, "pool_ticket", pool_ticket); 858 nvlist_add_string(nvl, "anchor", anchor); 859 nvlist_add_string(nvl, "anchor_call", anchor_call); 860 861 nvlist_add_number(nvlr, "nr", r->nr); 862 pfctl_nv_add_rule_addr(nvlr, "src", &r->src); 863 pfctl_nv_add_rule_addr(nvlr, "dst", &r->dst); 864 865 labelcount = 0; 866 while (r->label[labelcount][0] != 0 && 867 labelcount < PF_RULE_MAX_LABEL_COUNT) { 868 nvlist_append_string_array(nvlr, "labels", 869 r->label[labelcount]); 870 labelcount++; 871 } 872 nvlist_add_number(nvlr, "ridentifier", r->ridentifier); 873 874 nvlist_add_string(nvlr, "ifname", r->ifname); 875 nvlist_add_string(nvlr, "qname", r->qname); 876 nvlist_add_string(nvlr, "pqname", r->pqname); 877 nvlist_add_string(nvlr, "tagname", r->tagname); 878 nvlist_add_string(nvlr, "match_tagname", r->match_tagname); 879 nvlist_add_string(nvlr, "overload_tblname", r->overload_tblname); 880 881 pfctl_nv_add_pool(nvlr, "rpool", &r->rpool); 882 883 nvlist_add_number(nvlr, "os_fingerprint", r->os_fingerprint); 884 885 nvlist_add_number(nvlr, "rtableid", r->rtableid); 886 for (int i = 0; i < PFTM_MAX; i++) 887 timeouts[i] = r->timeout[i]; 888 nvlist_add_number_array(nvlr, "timeout", timeouts, PFTM_MAX); 889 nvlist_add_number(nvlr, "max_states", r->max_states); 890 nvlist_add_number(nvlr, "max_src_nodes", r->max_src_nodes); 891 nvlist_add_number(nvlr, "max_src_states", r->max_src_states); 892 nvlist_add_number(nvlr, "max_src_conn", r->max_src_conn); 893 nvlist_add_number(nvlr, "max_src_conn_rate.limit", 894 r->max_src_conn_rate.limit); 895 nvlist_add_number(nvlr, "max_src_conn_rate.seconds", 896 r->max_src_conn_rate.seconds); 897 nvlist_add_number(nvlr, "dnpipe", r->dnpipe); 898 nvlist_add_number(nvlr, "dnrpipe", r->dnrpipe); 899 nvlist_add_number(nvlr, "dnflags", r->free_flags); 900 nvlist_add_number(nvlr, "prob", r->prob); 901 nvlist_add_number(nvlr, "cuid", r->cuid); 902 nvlist_add_number(nvlr, "cpid", r->cpid); 903 904 nvlist_add_number(nvlr, "return_icmp", r->return_icmp); 905 nvlist_add_number(nvlr, "return_icmp6", r->return_icmp6); 906 907 nvlist_add_number(nvlr, "max_mss", r->max_mss); 908 nvlist_add_number(nvlr, "scrub_flags", r->scrub_flags); 909 910 pfctl_nv_add_uid(nvlr, "uid", &r->uid); 911 pfctl_nv_add_uid(nvlr, "gid", (const struct pf_rule_uid *)&r->gid); 912 913 nvlist_add_number(nvlr, "rule_flag", r->rule_flag); 914 nvlist_add_number(nvlr, "action", r->action); 915 nvlist_add_number(nvlr, "direction", r->direction); 916 nvlist_add_number(nvlr, "log", r->log); 917 nvlist_add_number(nvlr, "logif", r->logif); 918 nvlist_add_number(nvlr, "quick", r->quick); 919 nvlist_add_number(nvlr, "ifnot", r->ifnot); 920 nvlist_add_number(nvlr, "match_tag_not", r->match_tag_not); 921 nvlist_add_number(nvlr, "natpass", r->natpass); 922 923 nvlist_add_number(nvlr, "keep_state", r->keep_state); 924 nvlist_add_number(nvlr, "af", r->af); 925 nvlist_add_number(nvlr, "proto", r->proto); 926 nvlist_add_number(nvlr, "type", r->type); 927 nvlist_add_number(nvlr, "code", r->code); 928 nvlist_add_number(nvlr, "flags", r->flags); 929 nvlist_add_number(nvlr, "flagset", r->flagset); 930 nvlist_add_number(nvlr, "min_ttl", r->min_ttl); 931 nvlist_add_number(nvlr, "allow_opts", r->allow_opts); 932 nvlist_add_number(nvlr, "rt", r->rt); 933 nvlist_add_number(nvlr, "return_ttl", r->return_ttl); 934 nvlist_add_number(nvlr, "tos", r->tos); 935 nvlist_add_number(nvlr, "set_tos", r->set_tos); 936 nvlist_add_number(nvlr, "anchor_relative", r->anchor_relative); 937 nvlist_add_number(nvlr, "anchor_wildcard", r->anchor_wildcard); 938 939 nvlist_add_number(nvlr, "flush", r->flush); 940 941 nvlist_add_number(nvlr, "prio", r->prio); 942 set_prio[0] = r->set_prio[0]; 943 set_prio[1] = r->set_prio[1]; 944 nvlist_add_number_array(nvlr, "set_prio", set_prio, 2); 945 946 pfctl_nv_add_divert(nvlr, "divert", r); 947 948 nvlist_add_nvlist(nvl, "rule", nvlr); 949 nvlist_destroy(nvlr); 950 951 /* Now do the call. */ 952 nv.data = nvlist_pack(nvl, &nv.len); 953 nv.size = nv.len; 954 955 ret = ioctl(dev, DIOCADDRULENV, &nv); 956 if (ret == -1) 957 ret = errno; 958 959 free(nv.data); 960 nvlist_destroy(nvl); 961 962 return (ret); 963 } 964 965 int 966 pfctl_get_rules_info(int dev, struct pfctl_rules_info *rules, uint32_t ruleset, 967 const char *path) 968 { 969 struct pfioc_rule pr; 970 int ret; 971 972 bzero(&pr, sizeof(pr)); 973 if (strlcpy(pr.anchor, path, sizeof(pr.anchor)) >= sizeof(pr.anchor)) 974 return (E2BIG); 975 976 pr.rule.action = ruleset; 977 ret = ioctl(dev, DIOCGETRULES, &pr); 978 if (ret != 0) 979 return (ret); 980 981 rules->nr = pr.nr; 982 rules->ticket = pr.ticket; 983 984 return (0); 985 } 986 987 int 988 pfctl_get_rule(int dev, uint32_t nr, uint32_t ticket, const char *anchor, 989 uint32_t ruleset, struct pfctl_rule *rule, char *anchor_call) 990 { 991 return (pfctl_get_clear_rule(dev, nr, ticket, anchor, ruleset, rule, 992 anchor_call, false)); 993 } 994 995 int pfctl_get_clear_rule(int dev, uint32_t nr, uint32_t ticket, 996 const char *anchor, uint32_t ruleset, struct pfctl_rule *rule, 997 char *anchor_call, bool clear) 998 { 999 nvlist_t *nvl; 1000 int ret; 1001 1002 nvl = nvlist_create(0); 1003 if (nvl == 0) 1004 return (ENOMEM); 1005 1006 nvlist_add_number(nvl, "nr", nr); 1007 nvlist_add_number(nvl, "ticket", ticket); 1008 nvlist_add_string(nvl, "anchor", anchor); 1009 nvlist_add_number(nvl, "ruleset", ruleset); 1010 1011 if (clear) 1012 nvlist_add_bool(nvl, "clear_counter", true); 1013 1014 if ((ret = pfctl_do_ioctl(dev, DIOCGETRULENV, 8192, &nvl)) != 0) 1015 return (ret); 1016 1017 pf_nvrule_to_rule(nvlist_get_nvlist(nvl, "rule"), rule); 1018 1019 if (anchor_call) 1020 strlcpy(anchor_call, nvlist_get_string(nvl, "anchor_call"), 1021 MAXPATHLEN); 1022 1023 nvlist_destroy(nvl); 1024 1025 return (0); 1026 } 1027 1028 int 1029 pfctl_set_keepcounters(int dev, bool keep) 1030 { 1031 struct pfioc_nv nv; 1032 nvlist_t *nvl; 1033 int ret; 1034 1035 nvl = nvlist_create(0); 1036 1037 nvlist_add_bool(nvl, "keep_counters", keep); 1038 1039 nv.data = nvlist_pack(nvl, &nv.len); 1040 nv.size = nv.len; 1041 1042 nvlist_destroy(nvl); 1043 1044 ret = ioctl(dev, DIOCKEEPCOUNTERS, &nv); 1045 1046 free(nv.data); 1047 return (ret); 1048 } 1049 1050 static void 1051 pfctl_nv_add_state_cmp(nvlist_t *nvl, const char *name, 1052 const struct pfctl_state_cmp *cmp) 1053 { 1054 nvlist_t *nv; 1055 1056 nv = nvlist_create(0); 1057 1058 nvlist_add_number(nv, "id", cmp->id); 1059 nvlist_add_number(nv, "creatorid", htonl(cmp->creatorid)); 1060 nvlist_add_number(nv, "direction", cmp->direction); 1061 1062 nvlist_add_nvlist(nvl, name, nv); 1063 nvlist_destroy(nv); 1064 } 1065 1066 static void 1067 pf_state_key_export_to_state_key(struct pfctl_state_key *ps, 1068 const struct pf_state_key_export *s) 1069 { 1070 bcopy(s->addr, ps->addr, sizeof(ps->addr[0]) * 2); 1071 ps->port[0] = s->port[0]; 1072 ps->port[1] = s->port[1]; 1073 } 1074 1075 static void 1076 pf_state_peer_export_to_state_peer(struct pfctl_state_peer *ps, 1077 const struct pf_state_peer_export *s) 1078 { 1079 /* Ignore scrub. */ 1080 ps->seqlo = s->seqlo; 1081 ps->seqhi = s->seqhi; 1082 ps->seqdiff = s->seqdiff; 1083 /* Ignore max_win & mss */ 1084 ps->state = s->state; 1085 ps->wscale = s->wscale; 1086 } 1087 1088 static void 1089 pf_state_export_to_state(struct pfctl_state *ps, const struct pf_state_export *s) 1090 { 1091 assert(s->version >= PF_STATE_VERSION); 1092 1093 ps->id = s->id; 1094 strlcpy(ps->ifname, s->ifname, sizeof(ps->ifname)); 1095 strlcpy(ps->orig_ifname, s->orig_ifname, sizeof(ps->orig_ifname)); 1096 pf_state_key_export_to_state_key(&ps->key[0], &s->key[0]); 1097 pf_state_key_export_to_state_key(&ps->key[1], &s->key[1]); 1098 pf_state_peer_export_to_state_peer(&ps->src, &s->src); 1099 pf_state_peer_export_to_state_peer(&ps->dst, &s->dst); 1100 bcopy(&s->rt_addr, &ps->rt_addr, sizeof(ps->rt_addr)); 1101 ps->rule = ntohl(s->rule); 1102 ps->anchor = ntohl(s->anchor); 1103 ps->nat_rule = ntohl(s->nat_rule); 1104 ps->creation = ntohl(s->creation); 1105 ps->expire = ntohl(s->expire); 1106 ps->packets[0] = s->packets[0]; 1107 ps->packets[1] = s->packets[1]; 1108 ps->bytes[0] = s->bytes[0]; 1109 ps->bytes[1] = s->bytes[1]; 1110 ps->creatorid = ntohl(s->creatorid); 1111 ps->key[0].proto = s->proto; 1112 ps->key[1].proto = s->proto; 1113 ps->key[0].af = s->af; 1114 ps->key[1].af = s->af; 1115 ps->direction = s->direction; 1116 ps->state_flags = s->state_flags; 1117 ps->sync_flags = s->sync_flags; 1118 } 1119 1120 int 1121 pfctl_get_states(int dev, struct pfctl_states *states) 1122 { 1123 struct pfioc_states_v2 ps; 1124 struct pf_state_export *p; 1125 char *inbuf = NULL, *newinbuf = NULL; 1126 unsigned int len = 0; 1127 int i, error; 1128 1129 bzero(&ps, sizeof(ps)); 1130 ps.ps_req_version = PF_STATE_VERSION; 1131 1132 bzero(states, sizeof(*states)); 1133 TAILQ_INIT(&states->states); 1134 1135 for (;;) { 1136 ps.ps_len = len; 1137 if (len) { 1138 newinbuf = realloc(inbuf, len); 1139 if (newinbuf == NULL) 1140 return (ENOMEM); 1141 ps.ps_buf = inbuf = newinbuf; 1142 } 1143 if ((error = ioctl(dev, DIOCGETSTATESV2, &ps)) < 0) { 1144 free(inbuf); 1145 return (error); 1146 } 1147 if (ps.ps_len + sizeof(struct pfioc_states_v2) < len) 1148 break; 1149 if (len == 0 && ps.ps_len == 0) 1150 goto out; 1151 if (len == 0 && ps.ps_len != 0) 1152 len = ps.ps_len; 1153 if (ps.ps_len == 0) 1154 goto out; /* no states */ 1155 len *= 2; 1156 } 1157 p = ps.ps_states; 1158 1159 for (i = 0; i < ps.ps_len; i += sizeof(*p), p++) { 1160 struct pfctl_state *s = malloc(sizeof(*s)); 1161 if (s == NULL) { 1162 pfctl_free_states(states); 1163 error = ENOMEM; 1164 goto out; 1165 } 1166 1167 pf_state_export_to_state(s, p); 1168 TAILQ_INSERT_TAIL(&states->states, s, entry); 1169 } 1170 1171 out: 1172 free(inbuf); 1173 return (error); 1174 } 1175 1176 void 1177 pfctl_free_states(struct pfctl_states *states) 1178 { 1179 struct pfctl_state *s, *tmp; 1180 1181 TAILQ_FOREACH_SAFE(s, &states->states, entry, tmp) { 1182 free(s); 1183 } 1184 1185 bzero(states, sizeof(*states)); 1186 } 1187 1188 static int 1189 _pfctl_clear_states(int dev, const struct pfctl_kill *kill, 1190 unsigned int *killed, uint64_t ioctlval) 1191 { 1192 nvlist_t *nvl; 1193 int ret; 1194 1195 nvl = nvlist_create(0); 1196 1197 pfctl_nv_add_state_cmp(nvl, "cmp", &kill->cmp); 1198 nvlist_add_number(nvl, "af", kill->af); 1199 nvlist_add_number(nvl, "proto", kill->proto); 1200 pfctl_nv_add_rule_addr(nvl, "src", &kill->src); 1201 pfctl_nv_add_rule_addr(nvl, "dst", &kill->dst); 1202 pfctl_nv_add_rule_addr(nvl, "rt_addr", &kill->rt_addr); 1203 nvlist_add_string(nvl, "ifname", kill->ifname); 1204 nvlist_add_string(nvl, "label", kill->label); 1205 nvlist_add_bool(nvl, "kill_match", kill->kill_match); 1206 1207 if ((ret = pfctl_do_ioctl(dev, ioctlval, 1024, &nvl)) != 0) 1208 return (ret); 1209 1210 if (killed) 1211 *killed = nvlist_get_number(nvl, "killed"); 1212 1213 nvlist_destroy(nvl); 1214 1215 return (ret); 1216 } 1217 1218 int 1219 pfctl_clear_states(int dev, const struct pfctl_kill *kill, 1220 unsigned int *killed) 1221 { 1222 return (_pfctl_clear_states(dev, kill, killed, DIOCCLRSTATESNV)); 1223 } 1224 1225 int 1226 pfctl_kill_states(int dev, const struct pfctl_kill *kill, unsigned int *killed) 1227 { 1228 return (_pfctl_clear_states(dev, kill, killed, DIOCKILLSTATESNV)); 1229 } 1230 1231 int 1232 pfctl_clear_rules(int dev, const char *anchorname) 1233 { 1234 struct pfioc_trans trans; 1235 struct pfioc_trans_e transe[2]; 1236 int ret; 1237 1238 bzero(&trans, sizeof(trans)); 1239 bzero(&transe, sizeof(transe)); 1240 1241 transe[0].rs_num = PF_RULESET_SCRUB; 1242 if (strlcpy(transe[0].anchor, anchorname, sizeof(transe[0].anchor)) 1243 >= sizeof(transe[0].anchor)) 1244 return (E2BIG); 1245 1246 transe[1].rs_num = PF_RULESET_FILTER; 1247 if (strlcpy(transe[1].anchor, anchorname, sizeof(transe[1].anchor)) 1248 >= sizeof(transe[1].anchor)) 1249 return (E2BIG); 1250 1251 trans.size = 2; 1252 trans.esize = sizeof(transe[0]); 1253 trans.array = transe; 1254 1255 ret = ioctl(dev, DIOCXBEGIN, &trans); 1256 if (ret != 0) 1257 return (ret); 1258 return ioctl(dev, DIOCXCOMMIT, &trans); 1259 } 1260 1261 int 1262 pfctl_clear_nat(int dev, const char *anchorname) 1263 { 1264 struct pfioc_trans trans; 1265 struct pfioc_trans_e transe[3]; 1266 int ret; 1267 1268 bzero(&trans, sizeof(trans)); 1269 bzero(&transe, sizeof(transe)); 1270 1271 transe[0].rs_num = PF_RULESET_NAT; 1272 if (strlcpy(transe[0].anchor, anchorname, sizeof(transe[0].anchor)) 1273 >= sizeof(transe[0].anchor)) 1274 return (E2BIG); 1275 1276 transe[1].rs_num = PF_RULESET_BINAT; 1277 if (strlcpy(transe[1].anchor, anchorname, sizeof(transe[1].anchor)) 1278 >= sizeof(transe[0].anchor)) 1279 return (E2BIG); 1280 1281 transe[2].rs_num = PF_RULESET_RDR; 1282 if (strlcpy(transe[2].anchor, anchorname, sizeof(transe[2].anchor)) 1283 >= sizeof(transe[2].anchor)) 1284 return (E2BIG); 1285 1286 trans.size = 3; 1287 trans.esize = sizeof(transe[0]); 1288 trans.array = transe; 1289 1290 ret = ioctl(dev, DIOCXBEGIN, &trans); 1291 if (ret != 0) 1292 return (ret); 1293 return ioctl(dev, DIOCXCOMMIT, &trans); 1294 } 1295 int 1296 pfctl_clear_eth_rules(int dev, const char *anchorname) 1297 { 1298 struct pfioc_trans trans; 1299 struct pfioc_trans_e transe; 1300 int ret; 1301 1302 bzero(&trans, sizeof(trans)); 1303 bzero(&transe, sizeof(transe)); 1304 1305 transe.rs_num = PF_RULESET_ETH; 1306 if (strlcpy(transe.anchor, anchorname, sizeof(transe.anchor)) 1307 >= sizeof(transe.anchor)) 1308 return (E2BIG); 1309 1310 trans.size = 1; 1311 trans.esize = sizeof(transe); 1312 trans.array = &transe; 1313 1314 ret = ioctl(dev, DIOCXBEGIN, &trans); 1315 if (ret != 0) 1316 return (ret); 1317 return ioctl(dev, DIOCXCOMMIT, &trans); 1318 } 1319 1320 static int 1321 pfctl_get_limit(int dev, const int index, uint *limit) 1322 { 1323 struct pfioc_limit pl; 1324 1325 bzero(&pl, sizeof(pl)); 1326 pl.index = index; 1327 1328 if (ioctl(dev, DIOCGETLIMIT, &pl) == -1) 1329 return (errno); 1330 1331 *limit = pl.limit; 1332 1333 return (0); 1334 } 1335 1336 int 1337 pfctl_set_syncookies(int dev, const struct pfctl_syncookies *s) 1338 { 1339 struct pfioc_nv nv; 1340 nvlist_t *nvl; 1341 int ret; 1342 uint state_limit; 1343 uint64_t lim, hi, lo; 1344 1345 ret = pfctl_get_limit(dev, PF_LIMIT_STATES, &state_limit); 1346 if (ret != 0) 1347 return (ret); 1348 1349 lim = state_limit; 1350 hi = lim * s->highwater / 100; 1351 lo = lim * s->lowwater / 100; 1352 1353 if (lo == hi) 1354 hi++; 1355 1356 nvl = nvlist_create(0); 1357 1358 nvlist_add_bool(nvl, "enabled", s->mode != PFCTL_SYNCOOKIES_NEVER); 1359 nvlist_add_bool(nvl, "adaptive", s->mode == PFCTL_SYNCOOKIES_ADAPTIVE); 1360 nvlist_add_number(nvl, "highwater", hi); 1361 nvlist_add_number(nvl, "lowwater", lo); 1362 1363 nv.data = nvlist_pack(nvl, &nv.len); 1364 nv.size = nv.len; 1365 nvlist_destroy(nvl); 1366 nvl = NULL; 1367 1368 ret = ioctl(dev, DIOCSETSYNCOOKIES, &nv); 1369 1370 free(nv.data); 1371 return (ret); 1372 } 1373 1374 int 1375 pfctl_get_syncookies(int dev, struct pfctl_syncookies *s) 1376 { 1377 nvlist_t *nvl; 1378 int ret; 1379 uint state_limit; 1380 bool enabled, adaptive; 1381 1382 ret = pfctl_get_limit(dev, PF_LIMIT_STATES, &state_limit); 1383 if (ret != 0) 1384 return (ret); 1385 1386 bzero(s, sizeof(*s)); 1387 1388 nvl = nvlist_create(0); 1389 1390 if ((ret = pfctl_do_ioctl(dev, DIOCGETSYNCOOKIES, 256, &nvl)) != 0) 1391 return (errno); 1392 1393 enabled = nvlist_get_bool(nvl, "enabled"); 1394 adaptive = nvlist_get_bool(nvl, "adaptive"); 1395 1396 if (enabled) { 1397 if (adaptive) 1398 s->mode = PFCTL_SYNCOOKIES_ADAPTIVE; 1399 else 1400 s->mode = PFCTL_SYNCOOKIES_ALWAYS; 1401 } else { 1402 s->mode = PFCTL_SYNCOOKIES_NEVER; 1403 } 1404 1405 s->highwater = nvlist_get_number(nvl, "highwater") * 100 / state_limit; 1406 s->lowwater = nvlist_get_number(nvl, "lowwater") * 100 / state_limit; 1407 1408 nvlist_destroy(nvl); 1409 1410 return (0); 1411 } 1412 1413 int 1414 pfctl_table_add_addrs(int dev, struct pfr_table *tbl, struct pfr_addr 1415 *addr, int size, int *nadd, int flags) 1416 { 1417 struct pfioc_table io; 1418 1419 if (tbl == NULL || size < 0 || (size && addr == NULL)) { 1420 return (EINVAL); 1421 } 1422 bzero(&io, sizeof io); 1423 io.pfrio_flags = flags; 1424 io.pfrio_table = *tbl; 1425 io.pfrio_buffer = addr; 1426 io.pfrio_esize = sizeof(*addr); 1427 io.pfrio_size = size; 1428 1429 if (ioctl(dev, DIOCRADDADDRS, &io)) 1430 return (errno); 1431 if (nadd != NULL) 1432 *nadd = io.pfrio_nadd; 1433 return (0); 1434 } 1435 1436 int 1437 pfctl_table_del_addrs(int dev, struct pfr_table *tbl, struct pfr_addr 1438 *addr, int size, int *ndel, int flags) 1439 { 1440 struct pfioc_table io; 1441 1442 if (tbl == NULL || size < 0 || (size && addr == NULL)) { 1443 return (EINVAL); 1444 } 1445 bzero(&io, sizeof io); 1446 io.pfrio_flags = flags; 1447 io.pfrio_table = *tbl; 1448 io.pfrio_buffer = addr; 1449 io.pfrio_esize = sizeof(*addr); 1450 io.pfrio_size = size; 1451 1452 if (ioctl(dev, DIOCRDELADDRS, &io)) 1453 return (errno); 1454 if (ndel != NULL) 1455 *ndel = io.pfrio_ndel; 1456 return (0); 1457 } 1458 1459 int 1460 pfctl_table_set_addrs(int dev, struct pfr_table *tbl, struct pfr_addr 1461 *addr, int size, int *size2, int *nadd, int *ndel, int *nchange, int flags) 1462 { 1463 struct pfioc_table io; 1464 1465 if (tbl == NULL || size < 0 || (size && addr == NULL)) { 1466 return (EINVAL); 1467 } 1468 bzero(&io, sizeof io); 1469 io.pfrio_flags = flags; 1470 io.pfrio_table = *tbl; 1471 io.pfrio_buffer = addr; 1472 io.pfrio_esize = sizeof(*addr); 1473 io.pfrio_size = size; 1474 io.pfrio_size2 = (size2 != NULL) ? *size2 : 0; 1475 if (ioctl(dev, DIOCRSETADDRS, &io)) 1476 return (-1); 1477 if (nadd != NULL) 1478 *nadd = io.pfrio_nadd; 1479 if (ndel != NULL) 1480 *ndel = io.pfrio_ndel; 1481 if (nchange != NULL) 1482 *nchange = io.pfrio_nchange; 1483 if (size2 != NULL) 1484 *size2 = io.pfrio_size2; 1485 return (0); 1486 } 1487 1488 int pfctl_table_get_addrs(int dev, struct pfr_table *tbl, struct pfr_addr *addr, 1489 int *size, int flags) 1490 { 1491 struct pfioc_table io; 1492 1493 if (tbl == NULL || size == NULL || *size < 0 || 1494 (*size && addr == NULL)) { 1495 return (EINVAL); 1496 } 1497 bzero(&io, sizeof io); 1498 io.pfrio_flags = flags; 1499 io.pfrio_table = *tbl; 1500 io.pfrio_buffer = addr; 1501 io.pfrio_esize = sizeof(*addr); 1502 io.pfrio_size = *size; 1503 if (ioctl(dev, DIOCRGETADDRS, &io)) 1504 return (-1); 1505 *size = io.pfrio_size; 1506 return (0); 1507 } 1508