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 void 63 pf_nvuint_8_array(const nvlist_t *nvl, const char *name, size_t maxelems, 64 uint8_t *numbers, size_t *nelems) 65 { 66 const uint64_t *tmp; 67 size_t elems; 68 69 tmp = nvlist_get_number_array(nvl, name, &elems); 70 assert(elems <= maxelems); 71 72 for (size_t i = 0; i < elems; i++) 73 numbers[i] = tmp[i]; 74 75 if (nelems) 76 *nelems = elems; 77 } 78 79 static void 80 pf_nvuint_16_array(const nvlist_t *nvl, const char *name, size_t maxelems, 81 uint16_t *numbers, size_t *nelems) 82 { 83 const uint64_t *tmp; 84 size_t elems; 85 86 tmp = nvlist_get_number_array(nvl, name, &elems); 87 assert(elems <= maxelems); 88 89 for (size_t i = 0; i < elems; i++) 90 numbers[i] = tmp[i]; 91 92 if (nelems) 93 *nelems = elems; 94 } 95 96 static void 97 pf_nvuint_32_array(const nvlist_t *nvl, const char *name, size_t maxelems, 98 uint32_t *numbers, size_t *nelems) 99 { 100 const uint64_t *tmp; 101 size_t elems; 102 103 tmp = nvlist_get_number_array(nvl, name, &elems); 104 assert(elems <= maxelems); 105 106 for (size_t i = 0; i < elems; i++) 107 numbers[i] = tmp[i]; 108 109 if (nelems) 110 *nelems = elems; 111 } 112 113 static void 114 pf_nvuint_64_array(const nvlist_t *nvl, const char *name, size_t maxelems, 115 uint64_t *numbers, size_t *nelems) 116 { 117 const uint64_t *tmp; 118 size_t elems; 119 120 tmp = nvlist_get_number_array(nvl, name, &elems); 121 assert(elems <= maxelems); 122 123 for (size_t i = 0; i < elems; i++) 124 numbers[i] = tmp[i]; 125 126 if (nelems) 127 *nelems = elems; 128 } 129 130 static void 131 _pfctl_get_status_counters(const nvlist_t *nvl, 132 struct pfctl_status_counters *counters) 133 { 134 const uint64_t *ids, *counts; 135 const char *const *names; 136 size_t id_len, counter_len, names_len; 137 138 ids = nvlist_get_number_array(nvl, "ids", &id_len); 139 counts = nvlist_get_number_array(nvl, "counters", &counter_len); 140 names = nvlist_get_string_array(nvl, "names", &names_len); 141 assert(id_len == counter_len); 142 assert(counter_len == names_len); 143 144 TAILQ_INIT(counters); 145 146 for (size_t i = 0; i < id_len; i++) { 147 struct pfctl_status_counter *c; 148 149 c = malloc(sizeof(*c)); 150 151 c->id = ids[i]; 152 c->counter = counts[i]; 153 c->name = strdup(names[i]); 154 155 TAILQ_INSERT_TAIL(counters, c, entry); 156 } 157 } 158 159 struct pfctl_status * 160 pfctl_get_status(int dev) 161 { 162 struct pfioc_nv nv; 163 struct pfctl_status *status; 164 nvlist_t *nvl; 165 size_t len; 166 const void *chksum; 167 168 status = calloc(1, sizeof(*status)); 169 if (status == NULL) 170 return (NULL); 171 172 nv.data = malloc(4096); 173 nv.len = nv.size = 4096; 174 175 if (ioctl(dev, DIOCGETSTATUSNV, &nv)) { 176 free(nv.data); 177 free(status); 178 return (NULL); 179 } 180 181 nvl = nvlist_unpack(nv.data, nv.len, 0); 182 free(nv.data); 183 if (nvl == NULL) { 184 free(status); 185 return (NULL); 186 } 187 188 status->running = nvlist_get_bool(nvl, "running"); 189 status->since = nvlist_get_number(nvl, "since"); 190 status->debug = nvlist_get_number(nvl, "debug"); 191 status->hostid = ntohl(nvlist_get_number(nvl, "hostid")); 192 status->states = nvlist_get_number(nvl, "states"); 193 status->src_nodes = nvlist_get_number(nvl, "src_nodes"); 194 195 strlcpy(status->ifname, nvlist_get_string(nvl, "ifname"), 196 IFNAMSIZ); 197 chksum = nvlist_get_binary(nvl, "chksum", &len); 198 assert(len == PF_MD5_DIGEST_LENGTH); 199 memcpy(status->pf_chksum, chksum, len); 200 201 _pfctl_get_status_counters(nvlist_get_nvlist(nvl, "counters"), 202 &status->counters); 203 _pfctl_get_status_counters(nvlist_get_nvlist(nvl, "lcounters"), 204 &status->lcounters); 205 _pfctl_get_status_counters(nvlist_get_nvlist(nvl, "fcounters"), 206 &status->fcounters); 207 _pfctl_get_status_counters(nvlist_get_nvlist(nvl, "scounters"), 208 &status->scounters); 209 210 pf_nvuint_64_array(nvl, "pcounters", 2 * 2 * 3, 211 (uint64_t *)status->pcounters, NULL); 212 pf_nvuint_64_array(nvl, "bcounters", 2 * 2, 213 (uint64_t *)status->bcounters, NULL); 214 215 nvlist_destroy(nvl); 216 217 return (status); 218 } 219 220 void 221 pfctl_free_status(struct pfctl_status *status) 222 { 223 struct pfctl_status_counter *c, *tmp; 224 225 TAILQ_FOREACH_SAFE(c, &status->counters, entry, tmp) { 226 free(c->name); 227 free(c); 228 } 229 TAILQ_FOREACH_SAFE(c, &status->lcounters, entry, tmp) { 230 free(c->name); 231 free(c); 232 } 233 TAILQ_FOREACH_SAFE(c, &status->fcounters, entry, tmp) { 234 free(c->name); 235 free(c); 236 } 237 TAILQ_FOREACH_SAFE(c, &status->scounters, entry, tmp) { 238 free(c->name); 239 free(c); 240 } 241 242 free(status); 243 } 244 245 static void 246 pfctl_nv_add_addr(nvlist_t *nvparent, const char *name, 247 const struct pf_addr *addr) 248 { 249 nvlist_t *nvl = nvlist_create(0); 250 251 nvlist_add_binary(nvl, "addr", addr, sizeof(*addr)); 252 253 nvlist_add_nvlist(nvparent, name, nvl); 254 nvlist_destroy(nvl); 255 } 256 257 static void 258 pf_nvaddr_to_addr(const nvlist_t *nvl, struct pf_addr *addr) 259 { 260 size_t len; 261 const void *data; 262 263 data = nvlist_get_binary(nvl, "addr", &len); 264 assert(len == sizeof(struct pf_addr)); 265 memcpy(addr, data, len); 266 } 267 268 static void 269 pfctl_nv_add_addr_wrap(nvlist_t *nvparent, const char *name, 270 const struct pf_addr_wrap *addr) 271 { 272 nvlist_t *nvl = nvlist_create(0); 273 274 nvlist_add_number(nvl, "type", addr->type); 275 nvlist_add_number(nvl, "iflags", addr->iflags); 276 if (addr->type == PF_ADDR_DYNIFTL) 277 nvlist_add_string(nvl, "ifname", addr->v.ifname); 278 if (addr->type == PF_ADDR_TABLE) 279 nvlist_add_string(nvl, "tblname", addr->v.tblname); 280 pfctl_nv_add_addr(nvl, "addr", &addr->v.a.addr); 281 pfctl_nv_add_addr(nvl, "mask", &addr->v.a.mask); 282 283 nvlist_add_nvlist(nvparent, name, nvl); 284 nvlist_destroy(nvl); 285 } 286 287 static void 288 pf_nvaddr_wrap_to_addr_wrap(const nvlist_t *nvl, struct pf_addr_wrap *addr) 289 { 290 bzero(addr, sizeof(*addr)); 291 292 addr->type = nvlist_get_number(nvl, "type"); 293 addr->iflags = nvlist_get_number(nvl, "iflags"); 294 if (addr->type == PF_ADDR_DYNIFTL) { 295 strlcpy(addr->v.ifname, nvlist_get_string(nvl, "ifname"), 296 IFNAMSIZ); 297 addr->p.dyncnt = nvlist_get_number(nvl, "dyncnt"); 298 } 299 if (addr->type == PF_ADDR_TABLE) { 300 strlcpy(addr->v.tblname, nvlist_get_string(nvl, "tblname"), 301 PF_TABLE_NAME_SIZE); 302 addr->p.tblcnt = nvlist_get_number(nvl, "tblcnt"); 303 } 304 305 pf_nvaddr_to_addr(nvlist_get_nvlist(nvl, "addr"), &addr->v.a.addr); 306 pf_nvaddr_to_addr(nvlist_get_nvlist(nvl, "mask"), &addr->v.a.mask); 307 } 308 309 static void 310 pfctl_nv_add_rule_addr(nvlist_t *nvparent, const char *name, 311 const struct pf_rule_addr *addr) 312 { 313 uint64_t ports[2]; 314 nvlist_t *nvl = nvlist_create(0); 315 316 pfctl_nv_add_addr_wrap(nvl, "addr", &addr->addr); 317 ports[0] = addr->port[0]; 318 ports[1] = addr->port[1]; 319 nvlist_add_number_array(nvl, "port", ports, 2); 320 nvlist_add_number(nvl, "neg", addr->neg); 321 nvlist_add_number(nvl, "port_op", addr->port_op); 322 323 nvlist_add_nvlist(nvparent, name, nvl); 324 nvlist_destroy(nvl); 325 } 326 327 static void 328 pf_nvrule_addr_to_rule_addr(const nvlist_t *nvl, struct pf_rule_addr *addr) 329 { 330 pf_nvaddr_wrap_to_addr_wrap(nvlist_get_nvlist(nvl, "addr"), &addr->addr); 331 332 pf_nvuint_16_array(nvl, "port", 2, addr->port, NULL); 333 addr->neg = nvlist_get_number(nvl, "neg"); 334 addr->port_op = nvlist_get_number(nvl, "port_op"); 335 } 336 337 static void 338 pfctl_nv_add_mape(nvlist_t *nvparent, const char *name, 339 const struct pf_mape_portset *mape) 340 { 341 nvlist_t *nvl = nvlist_create(0); 342 343 nvlist_add_number(nvl, "offset", mape->offset); 344 nvlist_add_number(nvl, "psidlen", mape->psidlen); 345 nvlist_add_number(nvl, "psid", mape->psid); 346 nvlist_add_nvlist(nvparent, name, nvl); 347 nvlist_destroy(nvl); 348 } 349 350 static void 351 pfctl_nv_add_pool(nvlist_t *nvparent, const char *name, 352 const struct pfctl_pool *pool) 353 { 354 uint64_t ports[2]; 355 nvlist_t *nvl = nvlist_create(0); 356 357 nvlist_add_binary(nvl, "key", &pool->key, sizeof(pool->key)); 358 pfctl_nv_add_addr(nvl, "counter", &pool->counter); 359 nvlist_add_number(nvl, "tblidx", pool->tblidx); 360 361 ports[0] = pool->proxy_port[0]; 362 ports[1] = pool->proxy_port[1]; 363 nvlist_add_number_array(nvl, "proxy_port", ports, 2); 364 nvlist_add_number(nvl, "opts", pool->opts); 365 pfctl_nv_add_mape(nvl, "mape", &pool->mape); 366 367 nvlist_add_nvlist(nvparent, name, nvl); 368 nvlist_destroy(nvl); 369 } 370 371 static void 372 pf_nvmape_to_mape(const nvlist_t *nvl, struct pf_mape_portset *mape) 373 { 374 mape->offset = nvlist_get_number(nvl, "offset"); 375 mape->psidlen = nvlist_get_number(nvl, "psidlen"); 376 mape->psid = nvlist_get_number(nvl, "psid"); 377 } 378 379 static void 380 pf_nvpool_to_pool(const nvlist_t *nvl, struct pfctl_pool *pool) 381 { 382 size_t len; 383 const void *data; 384 385 data = nvlist_get_binary(nvl, "key", &len); 386 assert(len == sizeof(pool->key)); 387 memcpy(&pool->key, data, len); 388 389 pf_nvaddr_to_addr(nvlist_get_nvlist(nvl, "counter"), &pool->counter); 390 391 pool->tblidx = nvlist_get_number(nvl, "tblidx"); 392 pf_nvuint_16_array(nvl, "proxy_port", 2, pool->proxy_port, NULL); 393 pool->opts = nvlist_get_number(nvl, "opts"); 394 395 if (nvlist_exists_nvlist(nvl, "mape")) 396 pf_nvmape_to_mape(nvlist_get_nvlist(nvl, "mape"), &pool->mape); 397 } 398 399 static void 400 pfctl_nv_add_uid(nvlist_t *nvparent, const char *name, 401 const struct pf_rule_uid *uid) 402 { 403 uint64_t uids[2]; 404 nvlist_t *nvl = nvlist_create(0); 405 406 uids[0] = uid->uid[0]; 407 uids[1] = uid->uid[1]; 408 nvlist_add_number_array(nvl, "uid", uids, 2); 409 nvlist_add_number(nvl, "op", uid->op); 410 411 nvlist_add_nvlist(nvparent, name, nvl); 412 nvlist_destroy(nvl); 413 } 414 415 static void 416 pf_nvrule_uid_to_rule_uid(const nvlist_t *nvl, struct pf_rule_uid *uid) 417 { 418 pf_nvuint_32_array(nvl, "uid", 2, uid->uid, NULL); 419 uid->op = nvlist_get_number(nvl, "op"); 420 } 421 422 static void 423 pfctl_nv_add_divert(nvlist_t *nvparent, const char *name, 424 const struct pfctl_rule *r) 425 { 426 nvlist_t *nvl = nvlist_create(0); 427 428 pfctl_nv_add_addr(nvl, "addr", &r->divert.addr); 429 nvlist_add_number(nvl, "port", r->divert.port); 430 431 nvlist_add_nvlist(nvparent, name, nvl); 432 nvlist_destroy(nvl); 433 } 434 435 static void 436 pf_nvdivert_to_divert(const nvlist_t *nvl, struct pfctl_rule *rule) 437 { 438 pf_nvaddr_to_addr(nvlist_get_nvlist(nvl, "addr"), &rule->divert.addr); 439 rule->divert.port = nvlist_get_number(nvl, "port"); 440 } 441 442 static void 443 pf_nvrule_to_rule(const nvlist_t *nvl, struct pfctl_rule *rule) 444 { 445 const uint64_t *skip; 446 const char *const *labels; 447 size_t skipcount, labelcount; 448 449 rule->nr = nvlist_get_number(nvl, "nr"); 450 451 pf_nvrule_addr_to_rule_addr(nvlist_get_nvlist(nvl, "src"), &rule->src); 452 pf_nvrule_addr_to_rule_addr(nvlist_get_nvlist(nvl, "dst"), &rule->dst); 453 454 skip = nvlist_get_number_array(nvl, "skip", &skipcount); 455 assert(skip); 456 assert(skipcount == PF_SKIP_COUNT); 457 for (int i = 0; i < PF_SKIP_COUNT; i++) 458 rule->skip[i].nr = skip[i]; 459 460 labels = nvlist_get_string_array(nvl, "labels", &labelcount); 461 assert(labelcount <= PF_RULE_MAX_LABEL_COUNT); 462 for (size_t i = 0; i < labelcount; i++) 463 strlcpy(rule->label[i], labels[i], PF_RULE_LABEL_SIZE); 464 rule->ridentifier = nvlist_get_number(nvl, "ridentifier"); 465 strlcpy(rule->ifname, nvlist_get_string(nvl, "ifname"), IFNAMSIZ); 466 strlcpy(rule->qname, nvlist_get_string(nvl, "qname"), PF_QNAME_SIZE); 467 strlcpy(rule->pqname, nvlist_get_string(nvl, "pqname"), PF_QNAME_SIZE); 468 strlcpy(rule->tagname, nvlist_get_string(nvl, "tagname"), 469 PF_TAG_NAME_SIZE); 470 strlcpy(rule->match_tagname, nvlist_get_string(nvl, "match_tagname"), 471 PF_TAG_NAME_SIZE); 472 473 strlcpy(rule->overload_tblname, nvlist_get_string(nvl, "overload_tblname"), 474 PF_TABLE_NAME_SIZE); 475 476 pf_nvpool_to_pool(nvlist_get_nvlist(nvl, "rpool"), &rule->rpool); 477 478 rule->evaluations = nvlist_get_number(nvl, "evaluations"); 479 pf_nvuint_64_array(nvl, "packets", 2, rule->packets, NULL); 480 pf_nvuint_64_array(nvl, "bytes", 2, rule->bytes, NULL); 481 482 rule->os_fingerprint = nvlist_get_number(nvl, "os_fingerprint"); 483 484 rule->rtableid = nvlist_get_number(nvl, "rtableid"); 485 pf_nvuint_32_array(nvl, "timeout", PFTM_MAX, rule->timeout, NULL); 486 rule->max_states = nvlist_get_number(nvl, "max_states"); 487 rule->max_src_nodes = nvlist_get_number(nvl, "max_src_nodes"); 488 rule->max_src_states = nvlist_get_number(nvl, "max_src_states"); 489 rule->max_src_conn = nvlist_get_number(nvl, "max_src_conn"); 490 rule->max_src_conn_rate.limit = 491 nvlist_get_number(nvl, "max_src_conn_rate.limit"); 492 rule->max_src_conn_rate.seconds = 493 nvlist_get_number(nvl, "max_src_conn_rate.seconds"); 494 rule->qid = nvlist_get_number(nvl, "qid"); 495 rule->pqid = nvlist_get_number(nvl, "pqid"); 496 rule->dnpipe = nvlist_get_number(nvl, "dnpipe"); 497 rule->dnrpipe = nvlist_get_number(nvl, "dnrpipe"); 498 rule->free_flags = nvlist_get_number(nvl, "dnflags"); 499 rule->prob = nvlist_get_number(nvl, "prob"); 500 rule->cuid = nvlist_get_number(nvl, "cuid"); 501 rule->cpid = nvlist_get_number(nvl, "cpid"); 502 503 rule->return_icmp = nvlist_get_number(nvl, "return_icmp"); 504 rule->return_icmp6 = nvlist_get_number(nvl, "return_icmp6"); 505 rule->max_mss = nvlist_get_number(nvl, "max_mss"); 506 rule->scrub_flags = nvlist_get_number(nvl, "scrub_flags"); 507 508 pf_nvrule_uid_to_rule_uid(nvlist_get_nvlist(nvl, "uid"), &rule->uid); 509 pf_nvrule_uid_to_rule_uid(nvlist_get_nvlist(nvl, "gid"), 510 (struct pf_rule_uid *)&rule->gid); 511 512 rule->rule_flag = nvlist_get_number(nvl, "rule_flag"); 513 rule->action = nvlist_get_number(nvl, "action"); 514 rule->direction = nvlist_get_number(nvl, "direction"); 515 rule->log = nvlist_get_number(nvl, "log"); 516 rule->logif = nvlist_get_number(nvl, "logif"); 517 rule->quick = nvlist_get_number(nvl, "quick"); 518 rule->ifnot = nvlist_get_number(nvl, "ifnot"); 519 rule->match_tag_not = nvlist_get_number(nvl, "match_tag_not"); 520 rule->natpass = nvlist_get_number(nvl, "natpass"); 521 522 rule->keep_state = nvlist_get_number(nvl, "keep_state"); 523 rule->af = nvlist_get_number(nvl, "af"); 524 rule->proto = nvlist_get_number(nvl, "proto"); 525 rule->type = nvlist_get_number(nvl, "type"); 526 rule->code = nvlist_get_number(nvl, "code"); 527 rule->flags = nvlist_get_number(nvl, "flags"); 528 rule->flagset = nvlist_get_number(nvl, "flagset"); 529 rule->min_ttl = nvlist_get_number(nvl, "min_ttl"); 530 rule->allow_opts = nvlist_get_number(nvl, "allow_opts"); 531 rule->rt = nvlist_get_number(nvl, "rt"); 532 rule->return_ttl = nvlist_get_number(nvl, "return_ttl"); 533 rule->tos = nvlist_get_number(nvl, "tos"); 534 rule->set_tos = nvlist_get_number(nvl, "set_tos"); 535 rule->anchor_relative = nvlist_get_number(nvl, "anchor_relative"); 536 rule->anchor_wildcard = nvlist_get_number(nvl, "anchor_wildcard"); 537 538 rule->flush = nvlist_get_number(nvl, "flush"); 539 rule->prio = nvlist_get_number(nvl, "prio"); 540 pf_nvuint_8_array(nvl, "set_prio", 2, rule->set_prio, NULL); 541 542 pf_nvdivert_to_divert(nvlist_get_nvlist(nvl, "divert"), rule); 543 544 rule->states_cur = nvlist_get_number(nvl, "states_cur"); 545 rule->states_tot = nvlist_get_number(nvl, "states_tot"); 546 rule->src_nodes = nvlist_get_number(nvl, "src_nodes"); 547 } 548 549 static void 550 pfctl_nveth_addr_to_eth_addr(const nvlist_t *nvl, struct pfctl_eth_addr *addr) 551 { 552 static const u_int8_t EMPTY_MAC[ETHER_ADDR_LEN] = { 0 }; 553 size_t len; 554 const void *data; 555 556 data = nvlist_get_binary(nvl, "addr", &len); 557 assert(len == sizeof(addr->addr)); 558 memcpy(addr->addr, data, sizeof(addr->addr)); 559 560 data = nvlist_get_binary(nvl, "mask", &len); 561 assert(len == sizeof(addr->mask)); 562 memcpy(addr->mask, data, sizeof(addr->mask)); 563 564 addr->neg = nvlist_get_bool(nvl, "neg"); 565 566 /* To make checks for 'is this address set?' easier. */ 567 addr->isset = memcmp(addr->addr, EMPTY_MAC, ETHER_ADDR_LEN) != 0; 568 } 569 570 static nvlist_t * 571 pfctl_eth_addr_to_nveth_addr(const struct pfctl_eth_addr *addr) 572 { 573 nvlist_t *nvl; 574 575 nvl = nvlist_create(0); 576 if (nvl == NULL) 577 return (NULL); 578 579 nvlist_add_bool(nvl, "neg", addr->neg); 580 nvlist_add_binary(nvl, "addr", &addr->addr, ETHER_ADDR_LEN); 581 nvlist_add_binary(nvl, "mask", &addr->mask, ETHER_ADDR_LEN); 582 583 return (nvl); 584 } 585 586 static void 587 pfctl_nveth_rule_to_eth_rule(const nvlist_t *nvl, struct pfctl_eth_rule *rule) 588 { 589 rule->nr = nvlist_get_number(nvl, "nr"); 590 rule->quick = nvlist_get_bool(nvl, "quick"); 591 strlcpy(rule->ifname, nvlist_get_string(nvl, "ifname"), IFNAMSIZ); 592 rule->ifnot = nvlist_get_bool(nvl, "ifnot"); 593 rule->direction = nvlist_get_number(nvl, "direction"); 594 rule->proto = nvlist_get_number(nvl, "proto"); 595 596 pfctl_nveth_addr_to_eth_addr(nvlist_get_nvlist(nvl, "src"), 597 &rule->src); 598 pfctl_nveth_addr_to_eth_addr(nvlist_get_nvlist(nvl, "dst"), 599 &rule->dst); 600 601 pf_nvrule_addr_to_rule_addr(nvlist_get_nvlist(nvl, "ipsrc"), 602 &rule->ipsrc); 603 pf_nvrule_addr_to_rule_addr(nvlist_get_nvlist(nvl, "ipdst"), 604 &rule->ipdst); 605 606 rule->evaluations = nvlist_get_number(nvl, "evaluations"); 607 rule->packets[0] = nvlist_get_number(nvl, "packets-in"); 608 rule->packets[1] = nvlist_get_number(nvl, "packets-out"); 609 rule->bytes[0] = nvlist_get_number(nvl, "bytes-in"); 610 rule->bytes[1] = nvlist_get_number(nvl, "bytes-out"); 611 612 strlcpy(rule->qname, nvlist_get_string(nvl, "qname"), PF_QNAME_SIZE); 613 strlcpy(rule->tagname, nvlist_get_string(nvl, "tagname"), 614 PF_TAG_NAME_SIZE); 615 616 rule->dnpipe = nvlist_get_number(nvl, "dnpipe"); 617 rule->dnflags = nvlist_get_number(nvl, "dnflags"); 618 619 rule->anchor_relative = nvlist_get_number(nvl, "anchor_relative"); 620 rule->anchor_wildcard = nvlist_get_number(nvl, "anchor_wildcard"); 621 622 rule->action = nvlist_get_number(nvl, "action"); 623 } 624 625 int 626 pfctl_get_eth_rulesets_info(int dev, struct pfctl_eth_rulesets_info *ri, 627 const char *path) 628 { 629 uint8_t buf[1024]; 630 struct pfioc_nv nv; 631 nvlist_t *nvl; 632 void *packed; 633 size_t len; 634 635 bzero(ri, sizeof(*ri)); 636 637 nvl = nvlist_create(0); 638 nvlist_add_string(nvl, "path", path); 639 packed = nvlist_pack(nvl, &len); 640 memcpy(buf, packed, len); 641 free(packed); 642 nvlist_destroy(nvl); 643 644 nv.data = buf; 645 nv.len = len; 646 nv.size = sizeof(buf); 647 648 if (ioctl(dev, DIOCGETETHRULESETS, &nv) != 0) 649 return (errno); 650 651 nvl = nvlist_unpack(buf, nv.len, 0); 652 if (nvl == NULL) 653 return (EIO); 654 655 ri->nr = nvlist_get_number(nvl, "nr"); 656 657 nvlist_destroy(nvl); 658 return (0); 659 } 660 661 int 662 pfctl_get_eth_ruleset(int dev, const char *path, int nr, 663 struct pfctl_eth_ruleset_info *ri) 664 { 665 uint8_t buf[1024]; 666 struct pfioc_nv nv; 667 nvlist_t *nvl; 668 void *packed; 669 size_t len; 670 671 bzero(ri, sizeof(*ri)); 672 673 nvl = nvlist_create(0); 674 nvlist_add_string(nvl, "path", path); 675 nvlist_add_number(nvl, "nr", nr); 676 packed = nvlist_pack(nvl, &len); 677 memcpy(buf, packed, len); 678 free(packed); 679 nvlist_destroy(nvl); 680 681 nv.data = buf; 682 nv.len = len; 683 nv.size = sizeof(buf); 684 685 if (ioctl(dev, DIOCGETETHRULESET, &nv) != 0) 686 return (errno); 687 688 nvl = nvlist_unpack(buf, nv.len, 0); 689 if (nvl == NULL) 690 return (EIO); 691 692 ri->nr = nvlist_get_number(nvl, "nr"); 693 strlcpy(ri->path, nvlist_get_string(nvl, "path"), MAXPATHLEN); 694 strlcpy(ri->name, nvlist_get_string(nvl, "name"), 695 PF_ANCHOR_NAME_SIZE); 696 697 return (0); 698 } 699 700 int 701 pfctl_get_eth_rules_info(int dev, struct pfctl_eth_rules_info *rules, 702 const char *path) 703 { 704 uint8_t buf[1024]; 705 struct pfioc_nv nv; 706 nvlist_t *nvl; 707 void *packed; 708 size_t len; 709 710 bzero(rules, sizeof(*rules)); 711 712 nvl = nvlist_create(0); 713 nvlist_add_string(nvl, "anchor", path); 714 packed = nvlist_pack(nvl, &len); 715 memcpy(buf, packed, len); 716 free(packed); 717 nvlist_destroy(nvl); 718 719 nv.data = buf; 720 nv.len = len; 721 nv.size = sizeof(buf); 722 723 if (ioctl(dev, DIOCGETETHRULES, &nv) != 0) 724 return (errno); 725 726 nvl = nvlist_unpack(buf, nv.len, 0); 727 if (nvl == NULL) 728 return (EIO); 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 uint8_t buf[2048]; 743 struct pfioc_nv nv; 744 nvlist_t *nvl; 745 void *data; 746 size_t len; 747 748 nvl = nvlist_create(0); 749 750 nvlist_add_string(nvl, "anchor", path); 751 nvlist_add_number(nvl, "ticket", ticket); 752 nvlist_add_number(nvl, "nr", nr); 753 nvlist_add_bool(nvl, "clear", clear); 754 755 data = nvlist_pack(nvl, &len); 756 nv.data = buf; 757 memcpy(buf, data, len); 758 free(data); 759 nv.len = len; 760 nv.size = sizeof(buf); 761 if (ioctl(dev, DIOCGETETHRULE, &nv)) { 762 nvlist_destroy(nvl); 763 return (errno); 764 } 765 nvlist_destroy(nvl); 766 767 nvl = nvlist_unpack(buf, nv.len, 0); 768 if (nvl == NULL) { 769 return (EIO); 770 } 771 772 pfctl_nveth_rule_to_eth_rule(nvl, rule); 773 774 if (anchor_call) 775 strlcpy(anchor_call, nvlist_get_string(nvl, "anchor_call"), 776 MAXPATHLEN); 777 778 nvlist_destroy(nvl); 779 return (0); 780 } 781 782 int 783 pfctl_add_eth_rule(int dev, const struct pfctl_eth_rule *r, const char *anchor, 784 const char *anchor_call, uint32_t ticket) 785 { 786 struct pfioc_nv nv; 787 nvlist_t *nvl, *addr; 788 void *packed; 789 int error = 0; 790 size_t size; 791 792 nvl = nvlist_create(0); 793 794 nvlist_add_number(nvl, "ticket", ticket); 795 nvlist_add_string(nvl, "anchor", anchor); 796 nvlist_add_string(nvl, "anchor_call", anchor_call); 797 798 nvlist_add_number(nvl, "nr", r->nr); 799 nvlist_add_bool(nvl, "quick", r->quick); 800 nvlist_add_string(nvl, "ifname", r->ifname); 801 nvlist_add_bool(nvl, "ifnot", r->ifnot); 802 nvlist_add_number(nvl, "direction", r->direction); 803 nvlist_add_number(nvl, "proto", r->proto); 804 805 addr = pfctl_eth_addr_to_nveth_addr(&r->src); 806 if (addr == NULL) { 807 nvlist_destroy(nvl); 808 return (ENOMEM); 809 } 810 nvlist_add_nvlist(nvl, "src", addr); 811 nvlist_destroy(addr); 812 813 addr = pfctl_eth_addr_to_nveth_addr(&r->dst); 814 if (addr == NULL) { 815 nvlist_destroy(nvl); 816 return (ENOMEM); 817 } 818 nvlist_add_nvlist(nvl, "dst", addr); 819 nvlist_destroy(addr); 820 821 pfctl_nv_add_rule_addr(nvl, "ipsrc", &r->ipsrc); 822 pfctl_nv_add_rule_addr(nvl, "ipdst", &r->ipdst); 823 824 nvlist_add_string(nvl, "qname", r->qname); 825 nvlist_add_string(nvl, "tagname", r->tagname); 826 nvlist_add_number(nvl, "dnpipe", r->dnpipe); 827 nvlist_add_number(nvl, "dnflags", r->dnflags); 828 829 nvlist_add_number(nvl, "action", r->action); 830 831 packed = nvlist_pack(nvl, &size); 832 if (packed == NULL) { 833 nvlist_destroy(nvl); 834 return (ENOMEM); 835 } 836 837 nv.len = size; 838 nv.size = size; 839 nv.data = packed; 840 841 if (ioctl(dev, DIOCADDETHRULE, &nv) != 0) 842 error = errno; 843 844 free(packed); 845 nvlist_destroy(nvl); 846 847 return (error); 848 } 849 850 int 851 pfctl_add_rule(int dev, const struct pfctl_rule *r, const char *anchor, 852 const char *anchor_call, uint32_t ticket, uint32_t pool_ticket) 853 { 854 struct pfioc_nv nv; 855 uint64_t timeouts[PFTM_MAX]; 856 uint64_t set_prio[2]; 857 nvlist_t *nvl, *nvlr; 858 size_t labelcount; 859 int ret; 860 861 nvl = nvlist_create(0); 862 nvlr = nvlist_create(0); 863 864 nvlist_add_number(nvl, "ticket", ticket); 865 nvlist_add_number(nvl, "pool_ticket", pool_ticket); 866 nvlist_add_string(nvl, "anchor", anchor); 867 nvlist_add_string(nvl, "anchor_call", anchor_call); 868 869 nvlist_add_number(nvlr, "nr", r->nr); 870 pfctl_nv_add_rule_addr(nvlr, "src", &r->src); 871 pfctl_nv_add_rule_addr(nvlr, "dst", &r->dst); 872 873 labelcount = 0; 874 while (r->label[labelcount][0] != 0 && 875 labelcount < PF_RULE_MAX_LABEL_COUNT) { 876 nvlist_append_string_array(nvlr, "labels", 877 r->label[labelcount]); 878 labelcount++; 879 } 880 nvlist_add_number(nvlr, "ridentifier", r->ridentifier); 881 882 nvlist_add_string(nvlr, "ifname", r->ifname); 883 nvlist_add_string(nvlr, "qname", r->qname); 884 nvlist_add_string(nvlr, "pqname", r->pqname); 885 nvlist_add_string(nvlr, "tagname", r->tagname); 886 nvlist_add_string(nvlr, "match_tagname", r->match_tagname); 887 nvlist_add_string(nvlr, "overload_tblname", r->overload_tblname); 888 889 pfctl_nv_add_pool(nvlr, "rpool", &r->rpool); 890 891 nvlist_add_number(nvlr, "os_fingerprint", r->os_fingerprint); 892 893 nvlist_add_number(nvlr, "rtableid", r->rtableid); 894 for (int i = 0; i < PFTM_MAX; i++) 895 timeouts[i] = r->timeout[i]; 896 nvlist_add_number_array(nvlr, "timeout", timeouts, PFTM_MAX); 897 nvlist_add_number(nvlr, "max_states", r->max_states); 898 nvlist_add_number(nvlr, "max_src_nodes", r->max_src_nodes); 899 nvlist_add_number(nvlr, "max_src_states", r->max_src_states); 900 nvlist_add_number(nvlr, "max_src_conn", r->max_src_conn); 901 nvlist_add_number(nvlr, "max_src_conn_rate.limit", 902 r->max_src_conn_rate.limit); 903 nvlist_add_number(nvlr, "max_src_conn_rate.seconds", 904 r->max_src_conn_rate.seconds); 905 nvlist_add_number(nvlr, "dnpipe", r->dnpipe); 906 nvlist_add_number(nvlr, "dnrpipe", r->dnrpipe); 907 nvlist_add_number(nvlr, "dnflags", r->free_flags); 908 nvlist_add_number(nvlr, "prob", r->prob); 909 nvlist_add_number(nvlr, "cuid", r->cuid); 910 nvlist_add_number(nvlr, "cpid", r->cpid); 911 912 nvlist_add_number(nvlr, "return_icmp", r->return_icmp); 913 nvlist_add_number(nvlr, "return_icmp6", r->return_icmp6); 914 915 nvlist_add_number(nvlr, "max_mss", r->max_mss); 916 nvlist_add_number(nvlr, "scrub_flags", r->scrub_flags); 917 918 pfctl_nv_add_uid(nvlr, "uid", &r->uid); 919 pfctl_nv_add_uid(nvlr, "gid", (const struct pf_rule_uid *)&r->gid); 920 921 nvlist_add_number(nvlr, "rule_flag", r->rule_flag); 922 nvlist_add_number(nvlr, "action", r->action); 923 nvlist_add_number(nvlr, "direction", r->direction); 924 nvlist_add_number(nvlr, "log", r->log); 925 nvlist_add_number(nvlr, "logif", r->logif); 926 nvlist_add_number(nvlr, "quick", r->quick); 927 nvlist_add_number(nvlr, "ifnot", r->ifnot); 928 nvlist_add_number(nvlr, "match_tag_not", r->match_tag_not); 929 nvlist_add_number(nvlr, "natpass", r->natpass); 930 931 nvlist_add_number(nvlr, "keep_state", r->keep_state); 932 nvlist_add_number(nvlr, "af", r->af); 933 nvlist_add_number(nvlr, "proto", r->proto); 934 nvlist_add_number(nvlr, "type", r->type); 935 nvlist_add_number(nvlr, "code", r->code); 936 nvlist_add_number(nvlr, "flags", r->flags); 937 nvlist_add_number(nvlr, "flagset", r->flagset); 938 nvlist_add_number(nvlr, "min_ttl", r->min_ttl); 939 nvlist_add_number(nvlr, "allow_opts", r->allow_opts); 940 nvlist_add_number(nvlr, "rt", r->rt); 941 nvlist_add_number(nvlr, "return_ttl", r->return_ttl); 942 nvlist_add_number(nvlr, "tos", r->tos); 943 nvlist_add_number(nvlr, "set_tos", r->set_tos); 944 nvlist_add_number(nvlr, "anchor_relative", r->anchor_relative); 945 nvlist_add_number(nvlr, "anchor_wildcard", r->anchor_wildcard); 946 947 nvlist_add_number(nvlr, "flush", r->flush); 948 949 nvlist_add_number(nvlr, "prio", r->prio); 950 set_prio[0] = r->set_prio[0]; 951 set_prio[1] = r->set_prio[1]; 952 nvlist_add_number_array(nvlr, "set_prio", set_prio, 2); 953 954 pfctl_nv_add_divert(nvlr, "divert", r); 955 956 nvlist_add_nvlist(nvl, "rule", nvlr); 957 nvlist_destroy(nvlr); 958 959 /* Now do the call. */ 960 nv.data = nvlist_pack(nvl, &nv.len); 961 nv.size = nv.len; 962 963 ret = ioctl(dev, DIOCADDRULENV, &nv); 964 965 free(nv.data); 966 nvlist_destroy(nvl); 967 968 return (ret); 969 } 970 971 int 972 pfctl_get_rules_info(int dev, struct pfctl_rules_info *rules, uint32_t ruleset, 973 const char *path) 974 { 975 struct pfioc_rule pr; 976 int ret; 977 978 bzero(&pr, sizeof(pr)); 979 if (strlcpy(pr.anchor, path, sizeof(pr.anchor)) >= sizeof(pr.anchor)) 980 return (E2BIG); 981 982 pr.rule.action = ruleset; 983 ret = ioctl(dev, DIOCGETRULES, &pr); 984 if (ret != 0) 985 return (ret); 986 987 rules->nr = pr.nr; 988 rules->ticket = pr.ticket; 989 990 return (0); 991 } 992 993 int 994 pfctl_get_rule(int dev, uint32_t nr, uint32_t ticket, const char *anchor, 995 uint32_t ruleset, struct pfctl_rule *rule, char *anchor_call) 996 { 997 return (pfctl_get_clear_rule(dev, nr, ticket, anchor, ruleset, rule, 998 anchor_call, false)); 999 } 1000 1001 int pfctl_get_clear_rule(int dev, uint32_t nr, uint32_t ticket, 1002 const char *anchor, uint32_t ruleset, struct pfctl_rule *rule, 1003 char *anchor_call, bool clear) 1004 { 1005 struct pfioc_nv nv; 1006 nvlist_t *nvl; 1007 void *nvlpacked; 1008 int ret; 1009 1010 nvl = nvlist_create(0); 1011 if (nvl == 0) 1012 return (ENOMEM); 1013 1014 nvlist_add_number(nvl, "nr", nr); 1015 nvlist_add_number(nvl, "ticket", ticket); 1016 nvlist_add_string(nvl, "anchor", anchor); 1017 nvlist_add_number(nvl, "ruleset", ruleset); 1018 1019 if (clear) 1020 nvlist_add_bool(nvl, "clear_counter", true); 1021 1022 nvlpacked = nvlist_pack(nvl, &nv.len); 1023 if (nvlpacked == NULL) { 1024 nvlist_destroy(nvl); 1025 return (ENOMEM); 1026 } 1027 nv.data = malloc(8182); 1028 nv.size = 8192; 1029 assert(nv.len <= nv.size); 1030 memcpy(nv.data, nvlpacked, nv.len); 1031 nvlist_destroy(nvl); 1032 nvl = NULL; 1033 free(nvlpacked); 1034 1035 ret = ioctl(dev, DIOCGETRULENV, &nv); 1036 if (ret != 0) { 1037 free(nv.data); 1038 return (ret); 1039 } 1040 1041 nvl = nvlist_unpack(nv.data, nv.len, 0); 1042 if (nvl == NULL) { 1043 free(nv.data); 1044 return (EIO); 1045 } 1046 1047 pf_nvrule_to_rule(nvlist_get_nvlist(nvl, "rule"), rule); 1048 1049 if (anchor_call) 1050 strlcpy(anchor_call, nvlist_get_string(nvl, "anchor_call"), 1051 MAXPATHLEN); 1052 1053 free(nv.data); 1054 nvlist_destroy(nvl); 1055 1056 return (0); 1057 } 1058 1059 int 1060 pfctl_set_keepcounters(int dev, bool keep) 1061 { 1062 struct pfioc_nv nv; 1063 nvlist_t *nvl; 1064 int ret; 1065 1066 nvl = nvlist_create(0); 1067 1068 nvlist_add_bool(nvl, "keep_counters", keep); 1069 1070 nv.data = nvlist_pack(nvl, &nv.len); 1071 nv.size = nv.len; 1072 1073 nvlist_destroy(nvl); 1074 1075 ret = ioctl(dev, DIOCKEEPCOUNTERS, &nv); 1076 1077 free(nv.data); 1078 return (ret); 1079 } 1080 1081 static void 1082 pfctl_nv_add_state_cmp(nvlist_t *nvl, const char *name, 1083 const struct pfctl_state_cmp *cmp) 1084 { 1085 nvlist_t *nv; 1086 1087 nv = nvlist_create(0); 1088 1089 nvlist_add_number(nv, "id", cmp->id); 1090 nvlist_add_number(nv, "creatorid", htonl(cmp->creatorid)); 1091 nvlist_add_number(nv, "direction", cmp->direction); 1092 1093 nvlist_add_nvlist(nvl, name, nv); 1094 nvlist_destroy(nv); 1095 } 1096 1097 static void 1098 pf_state_key_export_to_state_key(struct pfctl_state_key *ps, 1099 const struct pf_state_key_export *s) 1100 { 1101 bcopy(s->addr, ps->addr, sizeof(ps->addr[0]) * 2); 1102 ps->port[0] = s->port[0]; 1103 ps->port[1] = s->port[1]; 1104 } 1105 1106 static void 1107 pf_state_peer_export_to_state_peer(struct pfctl_state_peer *ps, 1108 const struct pf_state_peer_export *s) 1109 { 1110 /* Ignore scrub. */ 1111 ps->seqlo = s->seqlo; 1112 ps->seqhi = s->seqhi; 1113 ps->seqdiff = s->seqdiff; 1114 /* Ignore max_win & mss */ 1115 ps->state = s->state; 1116 ps->wscale = s->wscale; 1117 } 1118 1119 static void 1120 pf_state_export_to_state(struct pfctl_state *ps, const struct pf_state_export *s) 1121 { 1122 assert(s->version >= PF_STATE_VERSION); 1123 1124 ps->id = s->id; 1125 strlcpy(ps->ifname, s->ifname, sizeof(ps->ifname)); 1126 strlcpy(ps->orig_ifname, s->orig_ifname, sizeof(ps->orig_ifname)); 1127 pf_state_key_export_to_state_key(&ps->key[0], &s->key[0]); 1128 pf_state_key_export_to_state_key(&ps->key[1], &s->key[1]); 1129 pf_state_peer_export_to_state_peer(&ps->src, &s->src); 1130 pf_state_peer_export_to_state_peer(&ps->dst, &s->dst); 1131 bcopy(&s->rt_addr, &ps->rt_addr, sizeof(ps->rt_addr)); 1132 ps->rule = ntohl(s->rule); 1133 ps->anchor = ntohl(s->anchor); 1134 ps->nat_rule = ntohl(s->nat_rule); 1135 ps->creation = ntohl(s->creation); 1136 ps->expire = ntohl(s->expire); 1137 ps->packets[0] = s->packets[0]; 1138 ps->packets[1] = s->packets[1]; 1139 ps->bytes[0] = s->bytes[0]; 1140 ps->bytes[1] = s->bytes[1]; 1141 ps->creatorid = ntohl(s->creatorid); 1142 ps->key[0].proto = s->proto; 1143 ps->key[1].proto = s->proto; 1144 ps->key[0].af = s->af; 1145 ps->key[1].af = s->af; 1146 ps->direction = s->direction; 1147 ps->state_flags = s->state_flags; 1148 ps->sync_flags = s->sync_flags; 1149 } 1150 1151 int 1152 pfctl_get_states(int dev, struct pfctl_states *states) 1153 { 1154 struct pfioc_states_v2 ps; 1155 struct pf_state_export *p; 1156 char *inbuf = NULL, *newinbuf = NULL; 1157 unsigned int len = 0; 1158 int i, error; 1159 1160 bzero(&ps, sizeof(ps)); 1161 ps.ps_req_version = PF_STATE_VERSION; 1162 1163 bzero(states, sizeof(*states)); 1164 TAILQ_INIT(&states->states); 1165 1166 for (;;) { 1167 ps.ps_len = len; 1168 if (len) { 1169 newinbuf = realloc(inbuf, len); 1170 if (newinbuf == NULL) 1171 return (ENOMEM); 1172 ps.ps_buf = inbuf = newinbuf; 1173 } 1174 if ((error = ioctl(dev, DIOCGETSTATESV2, &ps)) < 0) { 1175 free(inbuf); 1176 return (error); 1177 } 1178 if (ps.ps_len + sizeof(struct pfioc_states_v2) < len) 1179 break; 1180 if (len == 0 && ps.ps_len == 0) 1181 goto out; 1182 if (len == 0 && ps.ps_len != 0) 1183 len = ps.ps_len; 1184 if (ps.ps_len == 0) 1185 goto out; /* no states */ 1186 len *= 2; 1187 } 1188 p = ps.ps_states; 1189 1190 for (i = 0; i < ps.ps_len; i += sizeof(*p), p++) { 1191 struct pfctl_state *s = malloc(sizeof(*s)); 1192 if (s == NULL) { 1193 pfctl_free_states(states); 1194 error = ENOMEM; 1195 goto out; 1196 } 1197 1198 pf_state_export_to_state(s, p); 1199 TAILQ_INSERT_TAIL(&states->states, s, entry); 1200 } 1201 1202 out: 1203 free(inbuf); 1204 return (error); 1205 } 1206 1207 void 1208 pfctl_free_states(struct pfctl_states *states) 1209 { 1210 struct pfctl_state *s, *tmp; 1211 1212 TAILQ_FOREACH_SAFE(s, &states->states, entry, tmp) { 1213 free(s); 1214 } 1215 1216 bzero(states, sizeof(*states)); 1217 } 1218 1219 static int 1220 _pfctl_clear_states(int dev, const struct pfctl_kill *kill, 1221 unsigned int *killed, uint64_t ioctlval) 1222 { 1223 struct pfioc_nv nv; 1224 nvlist_t *nvl; 1225 int ret; 1226 1227 nvl = nvlist_create(0); 1228 1229 pfctl_nv_add_state_cmp(nvl, "cmp", &kill->cmp); 1230 nvlist_add_number(nvl, "af", kill->af); 1231 nvlist_add_number(nvl, "proto", kill->proto); 1232 pfctl_nv_add_rule_addr(nvl, "src", &kill->src); 1233 pfctl_nv_add_rule_addr(nvl, "dst", &kill->dst); 1234 pfctl_nv_add_rule_addr(nvl, "rt_addr", &kill->rt_addr); 1235 nvlist_add_string(nvl, "ifname", kill->ifname); 1236 nvlist_add_string(nvl, "label", kill->label); 1237 nvlist_add_bool(nvl, "kill_match", kill->kill_match); 1238 1239 nv.data = nvlist_pack(nvl, &nv.len); 1240 nv.size = nv.len; 1241 nvlist_destroy(nvl); 1242 nvl = NULL; 1243 1244 ret = ioctl(dev, ioctlval, &nv); 1245 if (ret != 0) { 1246 free(nv.data); 1247 return (ret); 1248 } 1249 1250 nvl = nvlist_unpack(nv.data, nv.len, 0); 1251 if (nvl == NULL) { 1252 free(nv.data); 1253 return (EIO); 1254 } 1255 1256 if (killed) 1257 *killed = nvlist_get_number(nvl, "killed"); 1258 1259 nvlist_destroy(nvl); 1260 free(nv.data); 1261 1262 return (ret); 1263 } 1264 1265 int 1266 pfctl_clear_states(int dev, const struct pfctl_kill *kill, 1267 unsigned int *killed) 1268 { 1269 return (_pfctl_clear_states(dev, kill, killed, DIOCCLRSTATESNV)); 1270 } 1271 1272 int 1273 pfctl_kill_states(int dev, const struct pfctl_kill *kill, unsigned int *killed) 1274 { 1275 return (_pfctl_clear_states(dev, kill, killed, DIOCKILLSTATESNV)); 1276 } 1277 1278 int 1279 pfctl_clear_rules(int dev, const char *anchorname) 1280 { 1281 struct pfioc_trans trans; 1282 struct pfioc_trans_e transe[2]; 1283 int ret; 1284 1285 bzero(&trans, sizeof(trans)); 1286 bzero(&transe, sizeof(transe)); 1287 1288 transe[0].rs_num = PF_RULESET_SCRUB; 1289 if (strlcpy(transe[0].anchor, anchorname, sizeof(transe[0].anchor)) 1290 >= sizeof(transe[0].anchor)) 1291 return (E2BIG); 1292 1293 transe[1].rs_num = PF_RULESET_FILTER; 1294 if (strlcpy(transe[1].anchor, anchorname, sizeof(transe[1].anchor)) 1295 >= sizeof(transe[1].anchor)) 1296 return (E2BIG); 1297 1298 trans.size = 2; 1299 trans.esize = sizeof(transe[0]); 1300 trans.array = transe; 1301 1302 ret = ioctl(dev, DIOCXBEGIN, &trans); 1303 if (ret != 0) 1304 return (ret); 1305 return ioctl(dev, DIOCXCOMMIT, &trans); 1306 } 1307 1308 int 1309 pfctl_clear_nat(int dev, const char *anchorname) 1310 { 1311 struct pfioc_trans trans; 1312 struct pfioc_trans_e transe[3]; 1313 int ret; 1314 1315 bzero(&trans, sizeof(trans)); 1316 bzero(&transe, sizeof(transe)); 1317 1318 transe[0].rs_num = PF_RULESET_NAT; 1319 if (strlcpy(transe[0].anchor, anchorname, sizeof(transe[0].anchor)) 1320 >= sizeof(transe[0].anchor)) 1321 return (E2BIG); 1322 1323 transe[1].rs_num = PF_RULESET_BINAT; 1324 if (strlcpy(transe[1].anchor, anchorname, sizeof(transe[1].anchor)) 1325 >= sizeof(transe[0].anchor)) 1326 return (E2BIG); 1327 1328 transe[2].rs_num = PF_RULESET_RDR; 1329 if (strlcpy(transe[2].anchor, anchorname, sizeof(transe[2].anchor)) 1330 >= sizeof(transe[2].anchor)) 1331 return (E2BIG); 1332 1333 trans.size = 3; 1334 trans.esize = sizeof(transe[0]); 1335 trans.array = transe; 1336 1337 ret = ioctl(dev, DIOCXBEGIN, &trans); 1338 if (ret != 0) 1339 return (ret); 1340 return ioctl(dev, DIOCXCOMMIT, &trans); 1341 } 1342 int 1343 pfctl_clear_eth_rules(int dev, const char *anchorname) 1344 { 1345 struct pfioc_trans trans; 1346 struct pfioc_trans_e transe; 1347 int ret; 1348 1349 bzero(&trans, sizeof(trans)); 1350 bzero(&transe, sizeof(transe)); 1351 1352 transe.rs_num = PF_RULESET_ETH; 1353 if (strlcpy(transe.anchor, anchorname, sizeof(transe.anchor)) 1354 >= sizeof(transe.anchor)) 1355 return (E2BIG); 1356 1357 trans.size = 1; 1358 trans.esize = sizeof(transe); 1359 trans.array = &transe; 1360 1361 ret = ioctl(dev, DIOCXBEGIN, &trans); 1362 if (ret != 0) 1363 return (ret); 1364 return ioctl(dev, DIOCXCOMMIT, &trans); 1365 } 1366 1367 static int 1368 pfctl_get_limit(int dev, const int index, uint *limit) 1369 { 1370 struct pfioc_limit pl; 1371 1372 bzero(&pl, sizeof(pl)); 1373 pl.index = index; 1374 1375 if (ioctl(dev, DIOCGETLIMIT, &pl) == -1) 1376 return (errno); 1377 1378 *limit = pl.limit; 1379 1380 return (0); 1381 } 1382 1383 int 1384 pfctl_set_syncookies(int dev, const struct pfctl_syncookies *s) 1385 { 1386 struct pfioc_nv nv; 1387 nvlist_t *nvl; 1388 int ret; 1389 uint state_limit; 1390 1391 ret = pfctl_get_limit(dev, PF_LIMIT_STATES, &state_limit); 1392 if (ret != 0) 1393 return (ret); 1394 1395 nvl = nvlist_create(0); 1396 1397 nvlist_add_bool(nvl, "enabled", s->mode != PFCTL_SYNCOOKIES_NEVER); 1398 nvlist_add_bool(nvl, "adaptive", s->mode == PFCTL_SYNCOOKIES_ADAPTIVE); 1399 nvlist_add_number(nvl, "highwater", state_limit * s->highwater / 100); 1400 nvlist_add_number(nvl, "lowwater", state_limit * s->lowwater / 100); 1401 1402 nv.data = nvlist_pack(nvl, &nv.len); 1403 nv.size = nv.len; 1404 nvlist_destroy(nvl); 1405 nvl = NULL; 1406 1407 ret = ioctl(dev, DIOCSETSYNCOOKIES, &nv); 1408 1409 free(nv.data); 1410 return (ret); 1411 } 1412 1413 int 1414 pfctl_get_syncookies(int dev, struct pfctl_syncookies *s) 1415 { 1416 struct pfioc_nv nv; 1417 nvlist_t *nvl; 1418 int ret; 1419 uint state_limit; 1420 bool enabled, adaptive; 1421 1422 ret = pfctl_get_limit(dev, PF_LIMIT_STATES, &state_limit); 1423 if (ret != 0) 1424 return (ret); 1425 1426 bzero(s, sizeof(*s)); 1427 1428 nv.data = malloc(256); 1429 nv.len = nv.size = 256; 1430 1431 if (ioctl(dev, DIOCGETSYNCOOKIES, &nv)) { 1432 free(nv.data); 1433 return (errno); 1434 } 1435 1436 nvl = nvlist_unpack(nv.data, nv.len, 0); 1437 free(nv.data); 1438 if (nvl == NULL) { 1439 return (EIO); 1440 } 1441 1442 enabled = nvlist_get_bool(nvl, "enabled"); 1443 adaptive = nvlist_get_bool(nvl, "adaptive"); 1444 1445 if (enabled) { 1446 if (adaptive) 1447 s->mode = PFCTL_SYNCOOKIES_ADAPTIVE; 1448 else 1449 s->mode = PFCTL_SYNCOOKIES_ALWAYS; 1450 } else { 1451 s->mode = PFCTL_SYNCOOKIES_NEVER; 1452 } 1453 1454 s->highwater = nvlist_get_number(nvl, "highwater") * 100 / state_limit; 1455 s->lowwater = nvlist_get_number(nvl, "lowwater") * 100 / state_limit; 1456 1457 nvlist_destroy(nvl); 1458 1459 return (0); 1460 } 1461