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 if (nvlist_exists_number(nvl, "timestamp")) { 516 rule->last_active_timestamp = nvlist_get_number(nvl, "timestamp"); 517 } 518 519 rule->os_fingerprint = nvlist_get_number(nvl, "os_fingerprint"); 520 521 rule->rtableid = nvlist_get_number(nvl, "rtableid"); 522 pf_nvuint_32_array(nvl, "timeout", PFTM_MAX, rule->timeout, NULL); 523 rule->max_states = nvlist_get_number(nvl, "max_states"); 524 rule->max_src_nodes = nvlist_get_number(nvl, "max_src_nodes"); 525 rule->max_src_states = nvlist_get_number(nvl, "max_src_states"); 526 rule->max_src_conn = nvlist_get_number(nvl, "max_src_conn"); 527 rule->max_src_conn_rate.limit = 528 nvlist_get_number(nvl, "max_src_conn_rate.limit"); 529 rule->max_src_conn_rate.seconds = 530 nvlist_get_number(nvl, "max_src_conn_rate.seconds"); 531 rule->qid = nvlist_get_number(nvl, "qid"); 532 rule->pqid = nvlist_get_number(nvl, "pqid"); 533 rule->dnpipe = nvlist_get_number(nvl, "dnpipe"); 534 rule->dnrpipe = nvlist_get_number(nvl, "dnrpipe"); 535 rule->free_flags = nvlist_get_number(nvl, "dnflags"); 536 rule->prob = nvlist_get_number(nvl, "prob"); 537 rule->cuid = nvlist_get_number(nvl, "cuid"); 538 rule->cpid = nvlist_get_number(nvl, "cpid"); 539 540 rule->return_icmp = nvlist_get_number(nvl, "return_icmp"); 541 rule->return_icmp6 = nvlist_get_number(nvl, "return_icmp6"); 542 rule->max_mss = nvlist_get_number(nvl, "max_mss"); 543 rule->scrub_flags = nvlist_get_number(nvl, "scrub_flags"); 544 545 pf_nvrule_uid_to_rule_uid(nvlist_get_nvlist(nvl, "uid"), &rule->uid); 546 pf_nvrule_uid_to_rule_uid(nvlist_get_nvlist(nvl, "gid"), 547 (struct pf_rule_uid *)&rule->gid); 548 549 rule->rule_flag = nvlist_get_number(nvl, "rule_flag"); 550 rule->action = nvlist_get_number(nvl, "action"); 551 rule->direction = nvlist_get_number(nvl, "direction"); 552 rule->log = nvlist_get_number(nvl, "log"); 553 rule->logif = nvlist_get_number(nvl, "logif"); 554 rule->quick = nvlist_get_number(nvl, "quick"); 555 rule->ifnot = nvlist_get_number(nvl, "ifnot"); 556 rule->match_tag_not = nvlist_get_number(nvl, "match_tag_not"); 557 rule->natpass = nvlist_get_number(nvl, "natpass"); 558 559 rule->keep_state = nvlist_get_number(nvl, "keep_state"); 560 rule->af = nvlist_get_number(nvl, "af"); 561 rule->proto = nvlist_get_number(nvl, "proto"); 562 rule->type = nvlist_get_number(nvl, "type"); 563 rule->code = nvlist_get_number(nvl, "code"); 564 rule->flags = nvlist_get_number(nvl, "flags"); 565 rule->flagset = nvlist_get_number(nvl, "flagset"); 566 rule->min_ttl = nvlist_get_number(nvl, "min_ttl"); 567 rule->allow_opts = nvlist_get_number(nvl, "allow_opts"); 568 rule->rt = nvlist_get_number(nvl, "rt"); 569 rule->return_ttl = nvlist_get_number(nvl, "return_ttl"); 570 rule->tos = nvlist_get_number(nvl, "tos"); 571 rule->set_tos = nvlist_get_number(nvl, "set_tos"); 572 rule->anchor_relative = nvlist_get_number(nvl, "anchor_relative"); 573 rule->anchor_wildcard = nvlist_get_number(nvl, "anchor_wildcard"); 574 575 rule->flush = nvlist_get_number(nvl, "flush"); 576 rule->prio = nvlist_get_number(nvl, "prio"); 577 pf_nvuint_8_array(nvl, "set_prio", 2, rule->set_prio, NULL); 578 579 pf_nvdivert_to_divert(nvlist_get_nvlist(nvl, "divert"), rule); 580 581 rule->states_cur = nvlist_get_number(nvl, "states_cur"); 582 rule->states_tot = nvlist_get_number(nvl, "states_tot"); 583 rule->src_nodes = nvlist_get_number(nvl, "src_nodes"); 584 } 585 586 static void 587 pfctl_nveth_addr_to_eth_addr(const nvlist_t *nvl, struct pfctl_eth_addr *addr) 588 { 589 static const u_int8_t EMPTY_MAC[ETHER_ADDR_LEN] = { 0 }; 590 size_t len; 591 const void *data; 592 593 data = nvlist_get_binary(nvl, "addr", &len); 594 assert(len == sizeof(addr->addr)); 595 memcpy(addr->addr, data, sizeof(addr->addr)); 596 597 data = nvlist_get_binary(nvl, "mask", &len); 598 assert(len == sizeof(addr->mask)); 599 memcpy(addr->mask, data, sizeof(addr->mask)); 600 601 addr->neg = nvlist_get_bool(nvl, "neg"); 602 603 /* To make checks for 'is this address set?' easier. */ 604 addr->isset = memcmp(addr->addr, EMPTY_MAC, ETHER_ADDR_LEN) != 0; 605 } 606 607 static nvlist_t * 608 pfctl_eth_addr_to_nveth_addr(const struct pfctl_eth_addr *addr) 609 { 610 nvlist_t *nvl; 611 612 nvl = nvlist_create(0); 613 if (nvl == NULL) 614 return (NULL); 615 616 nvlist_add_bool(nvl, "neg", addr->neg); 617 nvlist_add_binary(nvl, "addr", &addr->addr, ETHER_ADDR_LEN); 618 nvlist_add_binary(nvl, "mask", &addr->mask, ETHER_ADDR_LEN); 619 620 return (nvl); 621 } 622 623 static void 624 pfctl_nveth_rule_to_eth_rule(const nvlist_t *nvl, struct pfctl_eth_rule *rule) 625 { 626 rule->nr = nvlist_get_number(nvl, "nr"); 627 rule->quick = nvlist_get_bool(nvl, "quick"); 628 strlcpy(rule->ifname, nvlist_get_string(nvl, "ifname"), IFNAMSIZ); 629 rule->ifnot = nvlist_get_bool(nvl, "ifnot"); 630 rule->direction = nvlist_get_number(nvl, "direction"); 631 rule->proto = nvlist_get_number(nvl, "proto"); 632 strlcpy(rule->match_tagname, nvlist_get_string(nvl, "match_tagname"), 633 PF_TAG_NAME_SIZE); 634 rule->match_tag = nvlist_get_number(nvl, "match_tag"); 635 rule->match_tag_not = nvlist_get_bool(nvl, "match_tag_not"); 636 637 pfctl_nveth_addr_to_eth_addr(nvlist_get_nvlist(nvl, "src"), 638 &rule->src); 639 pfctl_nveth_addr_to_eth_addr(nvlist_get_nvlist(nvl, "dst"), 640 &rule->dst); 641 642 pf_nvrule_addr_to_rule_addr(nvlist_get_nvlist(nvl, "ipsrc"), 643 &rule->ipsrc); 644 pf_nvrule_addr_to_rule_addr(nvlist_get_nvlist(nvl, "ipdst"), 645 &rule->ipdst); 646 647 rule->evaluations = nvlist_get_number(nvl, "evaluations"); 648 rule->packets[0] = nvlist_get_number(nvl, "packets-in"); 649 rule->packets[1] = nvlist_get_number(nvl, "packets-out"); 650 rule->bytes[0] = nvlist_get_number(nvl, "bytes-in"); 651 rule->bytes[1] = nvlist_get_number(nvl, "bytes-out"); 652 653 if (nvlist_exists_number(nvl, "timestamp")) { 654 rule->last_active_timestamp = nvlist_get_number(nvl, "timestamp"); 655 } 656 657 strlcpy(rule->qname, nvlist_get_string(nvl, "qname"), PF_QNAME_SIZE); 658 strlcpy(rule->tagname, nvlist_get_string(nvl, "tagname"), 659 PF_TAG_NAME_SIZE); 660 661 rule->dnpipe = nvlist_get_number(nvl, "dnpipe"); 662 rule->dnflags = nvlist_get_number(nvl, "dnflags"); 663 664 rule->anchor_relative = nvlist_get_number(nvl, "anchor_relative"); 665 rule->anchor_wildcard = nvlist_get_number(nvl, "anchor_wildcard"); 666 667 rule->action = nvlist_get_number(nvl, "action"); 668 } 669 670 int 671 pfctl_get_eth_rulesets_info(int dev, struct pfctl_eth_rulesets_info *ri, 672 const char *path) 673 { 674 nvlist_t *nvl; 675 int ret; 676 677 bzero(ri, sizeof(*ri)); 678 679 nvl = nvlist_create(0); 680 nvlist_add_string(nvl, "path", path); 681 682 if ((ret = pfctl_do_ioctl(dev, DIOCGETETHRULESETS, 256, &nvl)) != 0) 683 return (ret); 684 685 ri->nr = nvlist_get_number(nvl, "nr"); 686 687 nvlist_destroy(nvl); 688 return (0); 689 } 690 691 int 692 pfctl_get_eth_ruleset(int dev, const char *path, int nr, 693 struct pfctl_eth_ruleset_info *ri) 694 { 695 nvlist_t *nvl; 696 int ret; 697 698 bzero(ri, sizeof(*ri)); 699 700 nvl = nvlist_create(0); 701 nvlist_add_string(nvl, "path", path); 702 nvlist_add_number(nvl, "nr", nr); 703 704 if ((ret = pfctl_do_ioctl(dev, DIOCGETETHRULESET, 1024, &nvl)) != 0) 705 return (ret); 706 707 ri->nr = nvlist_get_number(nvl, "nr"); 708 strlcpy(ri->path, nvlist_get_string(nvl, "path"), MAXPATHLEN); 709 strlcpy(ri->name, nvlist_get_string(nvl, "name"), 710 PF_ANCHOR_NAME_SIZE); 711 712 return (0); 713 } 714 715 int 716 pfctl_get_eth_rules_info(int dev, struct pfctl_eth_rules_info *rules, 717 const char *path) 718 { 719 nvlist_t *nvl; 720 int ret; 721 722 bzero(rules, sizeof(*rules)); 723 724 nvl = nvlist_create(0); 725 nvlist_add_string(nvl, "anchor", path); 726 727 if ((ret = pfctl_do_ioctl(dev, DIOCGETETHRULES, 1024, &nvl)) != 0) 728 return (ret); 729 730 rules->nr = nvlist_get_number(nvl, "nr"); 731 rules->ticket = nvlist_get_number(nvl, "ticket"); 732 733 nvlist_destroy(nvl); 734 return (0); 735 } 736 737 int 738 pfctl_get_eth_rule(int dev, uint32_t nr, uint32_t ticket, 739 const char *path, struct pfctl_eth_rule *rule, bool clear, 740 char *anchor_call) 741 { 742 nvlist_t *nvl; 743 int ret; 744 745 nvl = nvlist_create(0); 746 747 nvlist_add_string(nvl, "anchor", path); 748 nvlist_add_number(nvl, "ticket", ticket); 749 nvlist_add_number(nvl, "nr", nr); 750 nvlist_add_bool(nvl, "clear", clear); 751 752 if ((ret = pfctl_do_ioctl(dev, DIOCGETETHRULE, 4096, &nvl)) != 0) 753 return (ret); 754 755 pfctl_nveth_rule_to_eth_rule(nvl, rule); 756 757 if (anchor_call) 758 strlcpy(anchor_call, nvlist_get_string(nvl, "anchor_call"), 759 MAXPATHLEN); 760 761 nvlist_destroy(nvl); 762 return (0); 763 } 764 765 int 766 pfctl_add_eth_rule(int dev, const struct pfctl_eth_rule *r, const char *anchor, 767 const char *anchor_call, uint32_t ticket) 768 { 769 struct pfioc_nv nv; 770 nvlist_t *nvl, *addr; 771 void *packed; 772 int error = 0; 773 size_t size; 774 775 nvl = nvlist_create(0); 776 777 nvlist_add_number(nvl, "ticket", ticket); 778 nvlist_add_string(nvl, "anchor", anchor); 779 nvlist_add_string(nvl, "anchor_call", anchor_call); 780 781 nvlist_add_number(nvl, "nr", r->nr); 782 nvlist_add_bool(nvl, "quick", r->quick); 783 nvlist_add_string(nvl, "ifname", r->ifname); 784 nvlist_add_bool(nvl, "ifnot", r->ifnot); 785 nvlist_add_number(nvl, "direction", r->direction); 786 nvlist_add_number(nvl, "proto", r->proto); 787 nvlist_add_string(nvl, "match_tagname", r->match_tagname); 788 nvlist_add_bool(nvl, "match_tag_not", r->match_tag_not); 789 790 addr = pfctl_eth_addr_to_nveth_addr(&r->src); 791 if (addr == NULL) { 792 nvlist_destroy(nvl); 793 return (ENOMEM); 794 } 795 nvlist_add_nvlist(nvl, "src", addr); 796 nvlist_destroy(addr); 797 798 addr = pfctl_eth_addr_to_nveth_addr(&r->dst); 799 if (addr == NULL) { 800 nvlist_destroy(nvl); 801 return (ENOMEM); 802 } 803 nvlist_add_nvlist(nvl, "dst", addr); 804 nvlist_destroy(addr); 805 806 pfctl_nv_add_rule_addr(nvl, "ipsrc", &r->ipsrc); 807 pfctl_nv_add_rule_addr(nvl, "ipdst", &r->ipdst); 808 809 nvlist_add_string(nvl, "qname", r->qname); 810 nvlist_add_string(nvl, "tagname", r->tagname); 811 nvlist_add_number(nvl, "dnpipe", r->dnpipe); 812 nvlist_add_number(nvl, "dnflags", r->dnflags); 813 814 nvlist_add_number(nvl, "action", r->action); 815 816 packed = nvlist_pack(nvl, &size); 817 if (packed == NULL) { 818 nvlist_destroy(nvl); 819 return (ENOMEM); 820 } 821 822 nv.len = size; 823 nv.size = size; 824 nv.data = packed; 825 826 if (ioctl(dev, DIOCADDETHRULE, &nv) != 0) 827 error = errno; 828 829 free(packed); 830 nvlist_destroy(nvl); 831 832 return (error); 833 } 834 835 int 836 pfctl_add_rule(int dev, const struct pfctl_rule *r, const char *anchor, 837 const char *anchor_call, uint32_t ticket, uint32_t pool_ticket) 838 { 839 struct pfioc_nv nv; 840 uint64_t timeouts[PFTM_MAX]; 841 uint64_t set_prio[2]; 842 nvlist_t *nvl, *nvlr; 843 size_t labelcount; 844 int ret; 845 846 nvl = nvlist_create(0); 847 nvlr = nvlist_create(0); 848 849 nvlist_add_number(nvl, "ticket", ticket); 850 nvlist_add_number(nvl, "pool_ticket", pool_ticket); 851 nvlist_add_string(nvl, "anchor", anchor); 852 nvlist_add_string(nvl, "anchor_call", anchor_call); 853 854 nvlist_add_number(nvlr, "nr", r->nr); 855 pfctl_nv_add_rule_addr(nvlr, "src", &r->src); 856 pfctl_nv_add_rule_addr(nvlr, "dst", &r->dst); 857 858 labelcount = 0; 859 while (r->label[labelcount][0] != 0 && 860 labelcount < PF_RULE_MAX_LABEL_COUNT) { 861 nvlist_append_string_array(nvlr, "labels", 862 r->label[labelcount]); 863 labelcount++; 864 } 865 nvlist_add_number(nvlr, "ridentifier", r->ridentifier); 866 867 nvlist_add_string(nvlr, "ifname", r->ifname); 868 nvlist_add_string(nvlr, "qname", r->qname); 869 nvlist_add_string(nvlr, "pqname", r->pqname); 870 nvlist_add_string(nvlr, "tagname", r->tagname); 871 nvlist_add_string(nvlr, "match_tagname", r->match_tagname); 872 nvlist_add_string(nvlr, "overload_tblname", r->overload_tblname); 873 874 pfctl_nv_add_pool(nvlr, "rpool", &r->rpool); 875 876 nvlist_add_number(nvlr, "os_fingerprint", r->os_fingerprint); 877 878 nvlist_add_number(nvlr, "rtableid", r->rtableid); 879 for (int i = 0; i < PFTM_MAX; i++) 880 timeouts[i] = r->timeout[i]; 881 nvlist_add_number_array(nvlr, "timeout", timeouts, PFTM_MAX); 882 nvlist_add_number(nvlr, "max_states", r->max_states); 883 nvlist_add_number(nvlr, "max_src_nodes", r->max_src_nodes); 884 nvlist_add_number(nvlr, "max_src_states", r->max_src_states); 885 nvlist_add_number(nvlr, "max_src_conn", r->max_src_conn); 886 nvlist_add_number(nvlr, "max_src_conn_rate.limit", 887 r->max_src_conn_rate.limit); 888 nvlist_add_number(nvlr, "max_src_conn_rate.seconds", 889 r->max_src_conn_rate.seconds); 890 nvlist_add_number(nvlr, "dnpipe", r->dnpipe); 891 nvlist_add_number(nvlr, "dnrpipe", r->dnrpipe); 892 nvlist_add_number(nvlr, "dnflags", r->free_flags); 893 nvlist_add_number(nvlr, "prob", r->prob); 894 nvlist_add_number(nvlr, "cuid", r->cuid); 895 nvlist_add_number(nvlr, "cpid", r->cpid); 896 897 nvlist_add_number(nvlr, "return_icmp", r->return_icmp); 898 nvlist_add_number(nvlr, "return_icmp6", r->return_icmp6); 899 900 nvlist_add_number(nvlr, "max_mss", r->max_mss); 901 nvlist_add_number(nvlr, "scrub_flags", r->scrub_flags); 902 903 pfctl_nv_add_uid(nvlr, "uid", &r->uid); 904 pfctl_nv_add_uid(nvlr, "gid", (const struct pf_rule_uid *)&r->gid); 905 906 nvlist_add_number(nvlr, "rule_flag", r->rule_flag); 907 nvlist_add_number(nvlr, "action", r->action); 908 nvlist_add_number(nvlr, "direction", r->direction); 909 nvlist_add_number(nvlr, "log", r->log); 910 nvlist_add_number(nvlr, "logif", r->logif); 911 nvlist_add_number(nvlr, "quick", r->quick); 912 nvlist_add_number(nvlr, "ifnot", r->ifnot); 913 nvlist_add_number(nvlr, "match_tag_not", r->match_tag_not); 914 nvlist_add_number(nvlr, "natpass", r->natpass); 915 916 nvlist_add_number(nvlr, "keep_state", r->keep_state); 917 nvlist_add_number(nvlr, "af", r->af); 918 nvlist_add_number(nvlr, "proto", r->proto); 919 nvlist_add_number(nvlr, "type", r->type); 920 nvlist_add_number(nvlr, "code", r->code); 921 nvlist_add_number(nvlr, "flags", r->flags); 922 nvlist_add_number(nvlr, "flagset", r->flagset); 923 nvlist_add_number(nvlr, "min_ttl", r->min_ttl); 924 nvlist_add_number(nvlr, "allow_opts", r->allow_opts); 925 nvlist_add_number(nvlr, "rt", r->rt); 926 nvlist_add_number(nvlr, "return_ttl", r->return_ttl); 927 nvlist_add_number(nvlr, "tos", r->tos); 928 nvlist_add_number(nvlr, "set_tos", r->set_tos); 929 nvlist_add_number(nvlr, "anchor_relative", r->anchor_relative); 930 nvlist_add_number(nvlr, "anchor_wildcard", r->anchor_wildcard); 931 932 nvlist_add_number(nvlr, "flush", r->flush); 933 934 nvlist_add_number(nvlr, "prio", r->prio); 935 set_prio[0] = r->set_prio[0]; 936 set_prio[1] = r->set_prio[1]; 937 nvlist_add_number_array(nvlr, "set_prio", set_prio, 2); 938 939 pfctl_nv_add_divert(nvlr, "divert", r); 940 941 nvlist_add_nvlist(nvl, "rule", nvlr); 942 nvlist_destroy(nvlr); 943 944 /* Now do the call. */ 945 nv.data = nvlist_pack(nvl, &nv.len); 946 nv.size = nv.len; 947 948 ret = ioctl(dev, DIOCADDRULENV, &nv); 949 if (ret == -1) 950 ret = errno; 951 952 free(nv.data); 953 nvlist_destroy(nvl); 954 955 return (ret); 956 } 957 958 int 959 pfctl_get_rules_info(int dev, struct pfctl_rules_info *rules, uint32_t ruleset, 960 const char *path) 961 { 962 struct pfioc_rule pr; 963 int ret; 964 965 bzero(&pr, sizeof(pr)); 966 if (strlcpy(pr.anchor, path, sizeof(pr.anchor)) >= sizeof(pr.anchor)) 967 return (E2BIG); 968 969 pr.rule.action = ruleset; 970 ret = ioctl(dev, DIOCGETRULES, &pr); 971 if (ret != 0) 972 return (ret); 973 974 rules->nr = pr.nr; 975 rules->ticket = pr.ticket; 976 977 return (0); 978 } 979 980 int 981 pfctl_get_rule(int dev, uint32_t nr, uint32_t ticket, const char *anchor, 982 uint32_t ruleset, struct pfctl_rule *rule, char *anchor_call) 983 { 984 return (pfctl_get_clear_rule(dev, nr, ticket, anchor, ruleset, rule, 985 anchor_call, false)); 986 } 987 988 int pfctl_get_clear_rule(int dev, uint32_t nr, uint32_t ticket, 989 const char *anchor, uint32_t ruleset, struct pfctl_rule *rule, 990 char *anchor_call, bool clear) 991 { 992 nvlist_t *nvl; 993 int ret; 994 995 nvl = nvlist_create(0); 996 if (nvl == 0) 997 return (ENOMEM); 998 999 nvlist_add_number(nvl, "nr", nr); 1000 nvlist_add_number(nvl, "ticket", ticket); 1001 nvlist_add_string(nvl, "anchor", anchor); 1002 nvlist_add_number(nvl, "ruleset", ruleset); 1003 1004 if (clear) 1005 nvlist_add_bool(nvl, "clear_counter", true); 1006 1007 if ((ret = pfctl_do_ioctl(dev, DIOCGETRULENV, 8192, &nvl)) != 0) 1008 return (ret); 1009 1010 pf_nvrule_to_rule(nvlist_get_nvlist(nvl, "rule"), rule); 1011 1012 if (anchor_call) 1013 strlcpy(anchor_call, nvlist_get_string(nvl, "anchor_call"), 1014 MAXPATHLEN); 1015 1016 nvlist_destroy(nvl); 1017 1018 return (0); 1019 } 1020 1021 int 1022 pfctl_set_keepcounters(int dev, bool keep) 1023 { 1024 struct pfioc_nv nv; 1025 nvlist_t *nvl; 1026 int ret; 1027 1028 nvl = nvlist_create(0); 1029 1030 nvlist_add_bool(nvl, "keep_counters", keep); 1031 1032 nv.data = nvlist_pack(nvl, &nv.len); 1033 nv.size = nv.len; 1034 1035 nvlist_destroy(nvl); 1036 1037 ret = ioctl(dev, DIOCKEEPCOUNTERS, &nv); 1038 1039 free(nv.data); 1040 return (ret); 1041 } 1042 1043 static void 1044 pfctl_nv_add_state_cmp(nvlist_t *nvl, const char *name, 1045 const struct pfctl_state_cmp *cmp) 1046 { 1047 nvlist_t *nv; 1048 1049 nv = nvlist_create(0); 1050 1051 nvlist_add_number(nv, "id", cmp->id); 1052 nvlist_add_number(nv, "creatorid", htonl(cmp->creatorid)); 1053 nvlist_add_number(nv, "direction", cmp->direction); 1054 1055 nvlist_add_nvlist(nvl, name, nv); 1056 nvlist_destroy(nv); 1057 } 1058 1059 static void 1060 pf_state_key_export_to_state_key(struct pfctl_state_key *ps, 1061 const struct pf_state_key_export *s) 1062 { 1063 bcopy(s->addr, ps->addr, sizeof(ps->addr[0]) * 2); 1064 ps->port[0] = s->port[0]; 1065 ps->port[1] = s->port[1]; 1066 } 1067 1068 static void 1069 pf_state_peer_export_to_state_peer(struct pfctl_state_peer *ps, 1070 const struct pf_state_peer_export *s) 1071 { 1072 /* Ignore scrub. */ 1073 ps->seqlo = s->seqlo; 1074 ps->seqhi = s->seqhi; 1075 ps->seqdiff = s->seqdiff; 1076 /* Ignore max_win & mss */ 1077 ps->state = s->state; 1078 ps->wscale = s->wscale; 1079 } 1080 1081 static void 1082 pf_state_export_to_state(struct pfctl_state *ps, const struct pf_state_export *s) 1083 { 1084 assert(s->version >= PF_STATE_VERSION); 1085 1086 ps->id = s->id; 1087 strlcpy(ps->ifname, s->ifname, sizeof(ps->ifname)); 1088 strlcpy(ps->orig_ifname, s->orig_ifname, sizeof(ps->orig_ifname)); 1089 pf_state_key_export_to_state_key(&ps->key[0], &s->key[0]); 1090 pf_state_key_export_to_state_key(&ps->key[1], &s->key[1]); 1091 pf_state_peer_export_to_state_peer(&ps->src, &s->src); 1092 pf_state_peer_export_to_state_peer(&ps->dst, &s->dst); 1093 bcopy(&s->rt_addr, &ps->rt_addr, sizeof(ps->rt_addr)); 1094 ps->rule = ntohl(s->rule); 1095 ps->anchor = ntohl(s->anchor); 1096 ps->nat_rule = ntohl(s->nat_rule); 1097 ps->creation = ntohl(s->creation); 1098 ps->expire = ntohl(s->expire); 1099 ps->packets[0] = s->packets[0]; 1100 ps->packets[1] = s->packets[1]; 1101 ps->bytes[0] = s->bytes[0]; 1102 ps->bytes[1] = s->bytes[1]; 1103 ps->creatorid = ntohl(s->creatorid); 1104 ps->key[0].proto = s->proto; 1105 ps->key[1].proto = s->proto; 1106 ps->key[0].af = s->af; 1107 ps->key[1].af = s->af; 1108 ps->direction = s->direction; 1109 ps->state_flags = s->state_flags; 1110 ps->sync_flags = s->sync_flags; 1111 } 1112 1113 int 1114 pfctl_get_states(int dev, struct pfctl_states *states) 1115 { 1116 struct pfioc_states_v2 ps; 1117 struct pf_state_export *p; 1118 char *inbuf = NULL, *newinbuf = NULL; 1119 unsigned int len = 0; 1120 int i, error; 1121 1122 bzero(&ps, sizeof(ps)); 1123 ps.ps_req_version = PF_STATE_VERSION; 1124 1125 bzero(states, sizeof(*states)); 1126 TAILQ_INIT(&states->states); 1127 1128 for (;;) { 1129 ps.ps_len = len; 1130 if (len) { 1131 newinbuf = realloc(inbuf, len); 1132 if (newinbuf == NULL) 1133 return (ENOMEM); 1134 ps.ps_buf = inbuf = newinbuf; 1135 } 1136 if ((error = ioctl(dev, DIOCGETSTATESV2, &ps)) < 0) { 1137 free(inbuf); 1138 return (error); 1139 } 1140 if (ps.ps_len + sizeof(struct pfioc_states_v2) < len) 1141 break; 1142 if (len == 0 && ps.ps_len == 0) 1143 goto out; 1144 if (len == 0 && ps.ps_len != 0) 1145 len = ps.ps_len; 1146 if (ps.ps_len == 0) 1147 goto out; /* no states */ 1148 len *= 2; 1149 } 1150 p = ps.ps_states; 1151 1152 for (i = 0; i < ps.ps_len; i += sizeof(*p), p++) { 1153 struct pfctl_state *s = malloc(sizeof(*s)); 1154 if (s == NULL) { 1155 pfctl_free_states(states); 1156 error = ENOMEM; 1157 goto out; 1158 } 1159 1160 pf_state_export_to_state(s, p); 1161 TAILQ_INSERT_TAIL(&states->states, s, entry); 1162 } 1163 1164 out: 1165 free(inbuf); 1166 return (error); 1167 } 1168 1169 void 1170 pfctl_free_states(struct pfctl_states *states) 1171 { 1172 struct pfctl_state *s, *tmp; 1173 1174 TAILQ_FOREACH_SAFE(s, &states->states, entry, tmp) { 1175 free(s); 1176 } 1177 1178 bzero(states, sizeof(*states)); 1179 } 1180 1181 static int 1182 _pfctl_clear_states(int dev, const struct pfctl_kill *kill, 1183 unsigned int *killed, uint64_t ioctlval) 1184 { 1185 struct pfioc_nv nv; 1186 nvlist_t *nvl; 1187 int ret; 1188 1189 nvl = nvlist_create(0); 1190 1191 pfctl_nv_add_state_cmp(nvl, "cmp", &kill->cmp); 1192 nvlist_add_number(nvl, "af", kill->af); 1193 nvlist_add_number(nvl, "proto", kill->proto); 1194 pfctl_nv_add_rule_addr(nvl, "src", &kill->src); 1195 pfctl_nv_add_rule_addr(nvl, "dst", &kill->dst); 1196 pfctl_nv_add_rule_addr(nvl, "rt_addr", &kill->rt_addr); 1197 nvlist_add_string(nvl, "ifname", kill->ifname); 1198 nvlist_add_string(nvl, "label", kill->label); 1199 nvlist_add_bool(nvl, "kill_match", kill->kill_match); 1200 1201 if ((ret = pfctl_do_ioctl(dev, ioctlval, 1024, &nvl)) != 0) 1202 return (ret); 1203 1204 if (killed) 1205 *killed = nvlist_get_number(nvl, "killed"); 1206 1207 nvlist_destroy(nvl); 1208 free(nv.data); 1209 1210 return (ret); 1211 } 1212 1213 int 1214 pfctl_clear_states(int dev, const struct pfctl_kill *kill, 1215 unsigned int *killed) 1216 { 1217 return (_pfctl_clear_states(dev, kill, killed, DIOCCLRSTATESNV)); 1218 } 1219 1220 int 1221 pfctl_kill_states(int dev, const struct pfctl_kill *kill, unsigned int *killed) 1222 { 1223 return (_pfctl_clear_states(dev, kill, killed, DIOCKILLSTATESNV)); 1224 } 1225 1226 int 1227 pfctl_clear_rules(int dev, const char *anchorname) 1228 { 1229 struct pfioc_trans trans; 1230 struct pfioc_trans_e transe[2]; 1231 int ret; 1232 1233 bzero(&trans, sizeof(trans)); 1234 bzero(&transe, sizeof(transe)); 1235 1236 transe[0].rs_num = PF_RULESET_SCRUB; 1237 if (strlcpy(transe[0].anchor, anchorname, sizeof(transe[0].anchor)) 1238 >= sizeof(transe[0].anchor)) 1239 return (E2BIG); 1240 1241 transe[1].rs_num = PF_RULESET_FILTER; 1242 if (strlcpy(transe[1].anchor, anchorname, sizeof(transe[1].anchor)) 1243 >= sizeof(transe[1].anchor)) 1244 return (E2BIG); 1245 1246 trans.size = 2; 1247 trans.esize = sizeof(transe[0]); 1248 trans.array = transe; 1249 1250 ret = ioctl(dev, DIOCXBEGIN, &trans); 1251 if (ret != 0) 1252 return (ret); 1253 return ioctl(dev, DIOCXCOMMIT, &trans); 1254 } 1255 1256 int 1257 pfctl_clear_nat(int dev, const char *anchorname) 1258 { 1259 struct pfioc_trans trans; 1260 struct pfioc_trans_e transe[3]; 1261 int ret; 1262 1263 bzero(&trans, sizeof(trans)); 1264 bzero(&transe, sizeof(transe)); 1265 1266 transe[0].rs_num = PF_RULESET_NAT; 1267 if (strlcpy(transe[0].anchor, anchorname, sizeof(transe[0].anchor)) 1268 >= sizeof(transe[0].anchor)) 1269 return (E2BIG); 1270 1271 transe[1].rs_num = PF_RULESET_BINAT; 1272 if (strlcpy(transe[1].anchor, anchorname, sizeof(transe[1].anchor)) 1273 >= sizeof(transe[0].anchor)) 1274 return (E2BIG); 1275 1276 transe[2].rs_num = PF_RULESET_RDR; 1277 if (strlcpy(transe[2].anchor, anchorname, sizeof(transe[2].anchor)) 1278 >= sizeof(transe[2].anchor)) 1279 return (E2BIG); 1280 1281 trans.size = 3; 1282 trans.esize = sizeof(transe[0]); 1283 trans.array = transe; 1284 1285 ret = ioctl(dev, DIOCXBEGIN, &trans); 1286 if (ret != 0) 1287 return (ret); 1288 return ioctl(dev, DIOCXCOMMIT, &trans); 1289 } 1290 int 1291 pfctl_clear_eth_rules(int dev, const char *anchorname) 1292 { 1293 struct pfioc_trans trans; 1294 struct pfioc_trans_e transe; 1295 int ret; 1296 1297 bzero(&trans, sizeof(trans)); 1298 bzero(&transe, sizeof(transe)); 1299 1300 transe.rs_num = PF_RULESET_ETH; 1301 if (strlcpy(transe.anchor, anchorname, sizeof(transe.anchor)) 1302 >= sizeof(transe.anchor)) 1303 return (E2BIG); 1304 1305 trans.size = 1; 1306 trans.esize = sizeof(transe); 1307 trans.array = &transe; 1308 1309 ret = ioctl(dev, DIOCXBEGIN, &trans); 1310 if (ret != 0) 1311 return (ret); 1312 return ioctl(dev, DIOCXCOMMIT, &trans); 1313 } 1314 1315 static int 1316 pfctl_get_limit(int dev, const int index, uint *limit) 1317 { 1318 struct pfioc_limit pl; 1319 1320 bzero(&pl, sizeof(pl)); 1321 pl.index = index; 1322 1323 if (ioctl(dev, DIOCGETLIMIT, &pl) == -1) 1324 return (errno); 1325 1326 *limit = pl.limit; 1327 1328 return (0); 1329 } 1330 1331 int 1332 pfctl_set_syncookies(int dev, const struct pfctl_syncookies *s) 1333 { 1334 struct pfioc_nv nv; 1335 nvlist_t *nvl; 1336 int ret; 1337 uint state_limit; 1338 1339 ret = pfctl_get_limit(dev, PF_LIMIT_STATES, &state_limit); 1340 if (ret != 0) 1341 return (ret); 1342 1343 nvl = nvlist_create(0); 1344 1345 nvlist_add_bool(nvl, "enabled", s->mode != PFCTL_SYNCOOKIES_NEVER); 1346 nvlist_add_bool(nvl, "adaptive", s->mode == PFCTL_SYNCOOKIES_ADAPTIVE); 1347 nvlist_add_number(nvl, "highwater", state_limit * s->highwater / 100); 1348 nvlist_add_number(nvl, "lowwater", state_limit * s->lowwater / 100); 1349 1350 nv.data = nvlist_pack(nvl, &nv.len); 1351 nv.size = nv.len; 1352 nvlist_destroy(nvl); 1353 nvl = NULL; 1354 1355 ret = ioctl(dev, DIOCSETSYNCOOKIES, &nv); 1356 1357 free(nv.data); 1358 return (ret); 1359 } 1360 1361 int 1362 pfctl_get_syncookies(int dev, struct pfctl_syncookies *s) 1363 { 1364 nvlist_t *nvl; 1365 int ret; 1366 uint state_limit; 1367 bool enabled, adaptive; 1368 1369 ret = pfctl_get_limit(dev, PF_LIMIT_STATES, &state_limit); 1370 if (ret != 0) 1371 return (ret); 1372 1373 bzero(s, sizeof(*s)); 1374 1375 nvl = nvlist_create(0); 1376 1377 if ((ret = pfctl_do_ioctl(dev, DIOCGETSYNCOOKIES, 256, &nvl)) != 0) 1378 return (errno); 1379 1380 enabled = nvlist_get_bool(nvl, "enabled"); 1381 adaptive = nvlist_get_bool(nvl, "adaptive"); 1382 1383 if (enabled) { 1384 if (adaptive) 1385 s->mode = PFCTL_SYNCOOKIES_ADAPTIVE; 1386 else 1387 s->mode = PFCTL_SYNCOOKIES_ALWAYS; 1388 } else { 1389 s->mode = PFCTL_SYNCOOKIES_NEVER; 1390 } 1391 1392 s->highwater = nvlist_get_number(nvl, "highwater") * 100 / state_limit; 1393 s->lowwater = nvlist_get_number(nvl, "lowwater") * 100 / state_limit; 1394 1395 nvlist_destroy(nvl); 1396 1397 return (0); 1398 } 1399 1400 int 1401 pfctl_table_add_addrs(int dev, struct pfr_table *tbl, struct pfr_addr 1402 *addr, int size, int *nadd, int flags) 1403 { 1404 struct pfioc_table io; 1405 1406 if (tbl == NULL || size < 0 || (size && addr == NULL)) { 1407 return (EINVAL); 1408 } 1409 bzero(&io, sizeof io); 1410 io.pfrio_flags = flags; 1411 io.pfrio_table = *tbl; 1412 io.pfrio_buffer = addr; 1413 io.pfrio_esize = sizeof(*addr); 1414 io.pfrio_size = size; 1415 1416 if (ioctl(dev, DIOCRADDADDRS, &io)) 1417 return (errno); 1418 if (nadd != NULL) 1419 *nadd = io.pfrio_nadd; 1420 return (0); 1421 } 1422 1423 int 1424 pfctl_table_del_addrs(int dev, struct pfr_table *tbl, struct pfr_addr 1425 *addr, int size, int *ndel, int flags) 1426 { 1427 struct pfioc_table io; 1428 1429 if (tbl == NULL || size < 0 || (size && addr == NULL)) { 1430 return (EINVAL); 1431 } 1432 bzero(&io, sizeof io); 1433 io.pfrio_flags = flags; 1434 io.pfrio_table = *tbl; 1435 io.pfrio_buffer = addr; 1436 io.pfrio_esize = sizeof(*addr); 1437 io.pfrio_size = size; 1438 1439 if (ioctl(dev, DIOCRDELADDRS, &io)) 1440 return (errno); 1441 if (ndel != NULL) 1442 *ndel = io.pfrio_ndel; 1443 return (0); 1444 } 1445 1446 int 1447 pfctl_table_set_addrs(int dev, struct pfr_table *tbl, struct pfr_addr 1448 *addr, int size, int *size2, int *nadd, int *ndel, int *nchange, int flags) 1449 { 1450 struct pfioc_table io; 1451 1452 if (tbl == NULL || size < 0 || (size && addr == NULL)) { 1453 return (EINVAL); 1454 } 1455 bzero(&io, sizeof io); 1456 io.pfrio_flags = flags; 1457 io.pfrio_table = *tbl; 1458 io.pfrio_buffer = addr; 1459 io.pfrio_esize = sizeof(*addr); 1460 io.pfrio_size = size; 1461 io.pfrio_size2 = (size2 != NULL) ? *size2 : 0; 1462 if (ioctl(dev, DIOCRSETADDRS, &io)) 1463 return (-1); 1464 if (nadd != NULL) 1465 *nadd = io.pfrio_nadd; 1466 if (ndel != NULL) 1467 *ndel = io.pfrio_ndel; 1468 if (nchange != NULL) 1469 *nchange = io.pfrio_nchange; 1470 if (size2 != NULL) 1471 *size2 = io.pfrio_size2; 1472 return (0); 1473 } 1474 1475 int pfctl_table_get_addrs(int dev, struct pfr_table *tbl, struct pfr_addr *addr, 1476 int *size, int flags) 1477 { 1478 struct pfioc_table io; 1479 1480 if (tbl == NULL || size == NULL || *size < 0 || 1481 (*size && addr == NULL)) { 1482 return (EINVAL); 1483 } 1484 bzero(&io, sizeof io); 1485 io.pfrio_flags = flags; 1486 io.pfrio_table = *tbl; 1487 io.pfrio_buffer = addr; 1488 io.pfrio_esize = sizeof(*addr); 1489 io.pfrio_size = *size; 1490 if (ioctl(dev, DIOCRGETADDRS, &io)) 1491 return (-1); 1492 *size = io.pfrio_size; 1493 return (0); 1494 } 1495