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 if (nvlen > size) 72 size = nvlen; 73 74 retry: 75 nv.data = malloc(size); 76 memcpy(nv.data, data, nvlen); 77 free(data); 78 79 nv.len = nvlen; 80 nv.size = size; 81 82 ret = ioctl(dev, cmd, &nv); 83 if (ret == -1 && errno == ENOSPC) { 84 size *= 2; 85 free(nv.data); 86 goto retry; 87 } 88 89 nvlist_destroy(*nvl); 90 *nvl = NULL; 91 92 if (ret == 0) { 93 *nvl = nvlist_unpack(nv.data, nv.len, 0); 94 if (*nvl == NULL) { 95 free(nv.data); 96 return (EIO); 97 } 98 } else { 99 ret = errno; 100 } 101 102 free(nv.data); 103 104 return (ret); 105 } 106 107 static void 108 pf_nvuint_8_array(const nvlist_t *nvl, const char *name, size_t maxelems, 109 uint8_t *numbers, size_t *nelems) 110 { 111 const uint64_t *tmp; 112 size_t elems; 113 114 tmp = nvlist_get_number_array(nvl, name, &elems); 115 assert(elems <= maxelems); 116 117 for (size_t i = 0; i < elems; i++) 118 numbers[i] = tmp[i]; 119 120 if (nelems) 121 *nelems = elems; 122 } 123 124 static void 125 pf_nvuint_16_array(const nvlist_t *nvl, const char *name, size_t maxelems, 126 uint16_t *numbers, size_t *nelems) 127 { 128 const uint64_t *tmp; 129 size_t elems; 130 131 tmp = nvlist_get_number_array(nvl, name, &elems); 132 assert(elems <= maxelems); 133 134 for (size_t i = 0; i < elems; i++) 135 numbers[i] = tmp[i]; 136 137 if (nelems) 138 *nelems = elems; 139 } 140 141 static void 142 pf_nvuint_32_array(const nvlist_t *nvl, const char *name, size_t maxelems, 143 uint32_t *numbers, size_t *nelems) 144 { 145 const uint64_t *tmp; 146 size_t elems; 147 148 tmp = nvlist_get_number_array(nvl, name, &elems); 149 assert(elems <= maxelems); 150 151 for (size_t i = 0; i < elems; i++) 152 numbers[i] = tmp[i]; 153 154 if (nelems) 155 *nelems = elems; 156 } 157 158 static void 159 pf_nvuint_64_array(const nvlist_t *nvl, const char *name, size_t maxelems, 160 uint64_t *numbers, size_t *nelems) 161 { 162 const uint64_t *tmp; 163 size_t elems; 164 165 tmp = nvlist_get_number_array(nvl, name, &elems); 166 assert(elems <= maxelems); 167 168 for (size_t i = 0; i < elems; i++) 169 numbers[i] = tmp[i]; 170 171 if (nelems) 172 *nelems = elems; 173 } 174 175 static void 176 _pfctl_get_status_counters(const nvlist_t *nvl, 177 struct pfctl_status_counters *counters) 178 { 179 const uint64_t *ids, *counts; 180 const char *const *names; 181 size_t id_len, counter_len, names_len; 182 183 ids = nvlist_get_number_array(nvl, "ids", &id_len); 184 counts = nvlist_get_number_array(nvl, "counters", &counter_len); 185 names = nvlist_get_string_array(nvl, "names", &names_len); 186 assert(id_len == counter_len); 187 assert(counter_len == names_len); 188 189 TAILQ_INIT(counters); 190 191 for (size_t i = 0; i < id_len; i++) { 192 struct pfctl_status_counter *c; 193 194 c = malloc(sizeof(*c)); 195 196 c->id = ids[i]; 197 c->counter = counts[i]; 198 c->name = strdup(names[i]); 199 200 TAILQ_INSERT_TAIL(counters, c, entry); 201 } 202 } 203 204 struct pfctl_status * 205 pfctl_get_status(int dev) 206 { 207 struct pfctl_status *status; 208 nvlist_t *nvl; 209 size_t len; 210 const void *chksum; 211 212 status = calloc(1, sizeof(*status)); 213 if (status == NULL) 214 return (NULL); 215 216 nvl = nvlist_create(0); 217 218 if (pfctl_do_ioctl(dev, DIOCGETSTATUSNV, 4096, &nvl)) { 219 free(status); 220 return (NULL); 221 } 222 223 status->running = nvlist_get_bool(nvl, "running"); 224 status->since = nvlist_get_number(nvl, "since"); 225 status->debug = nvlist_get_number(nvl, "debug"); 226 status->hostid = ntohl(nvlist_get_number(nvl, "hostid")); 227 status->states = nvlist_get_number(nvl, "states"); 228 status->src_nodes = nvlist_get_number(nvl, "src_nodes"); 229 status->syncookies_active = nvlist_get_bool(nvl, "syncookies_active"); 230 status->reass = nvlist_get_number(nvl, "reass"); 231 232 strlcpy(status->ifname, nvlist_get_string(nvl, "ifname"), 233 IFNAMSIZ); 234 chksum = nvlist_get_binary(nvl, "chksum", &len); 235 assert(len == PF_MD5_DIGEST_LENGTH); 236 memcpy(status->pf_chksum, chksum, len); 237 238 _pfctl_get_status_counters(nvlist_get_nvlist(nvl, "counters"), 239 &status->counters); 240 _pfctl_get_status_counters(nvlist_get_nvlist(nvl, "lcounters"), 241 &status->lcounters); 242 _pfctl_get_status_counters(nvlist_get_nvlist(nvl, "fcounters"), 243 &status->fcounters); 244 _pfctl_get_status_counters(nvlist_get_nvlist(nvl, "scounters"), 245 &status->scounters); 246 247 pf_nvuint_64_array(nvl, "pcounters", 2 * 2 * 3, 248 (uint64_t *)status->pcounters, NULL); 249 pf_nvuint_64_array(nvl, "bcounters", 2 * 2, 250 (uint64_t *)status->bcounters, NULL); 251 252 nvlist_destroy(nvl); 253 254 return (status); 255 } 256 257 void 258 pfctl_free_status(struct pfctl_status *status) 259 { 260 struct pfctl_status_counter *c, *tmp; 261 262 TAILQ_FOREACH_SAFE(c, &status->counters, entry, tmp) { 263 free(c->name); 264 free(c); 265 } 266 TAILQ_FOREACH_SAFE(c, &status->lcounters, entry, tmp) { 267 free(c->name); 268 free(c); 269 } 270 TAILQ_FOREACH_SAFE(c, &status->fcounters, entry, tmp) { 271 free(c->name); 272 free(c); 273 } 274 TAILQ_FOREACH_SAFE(c, &status->scounters, entry, tmp) { 275 free(c->name); 276 free(c); 277 } 278 279 free(status); 280 } 281 282 static void 283 pfctl_nv_add_addr(nvlist_t *nvparent, const char *name, 284 const struct pf_addr *addr) 285 { 286 nvlist_t *nvl = nvlist_create(0); 287 288 nvlist_add_binary(nvl, "addr", addr, sizeof(*addr)); 289 290 nvlist_add_nvlist(nvparent, name, nvl); 291 nvlist_destroy(nvl); 292 } 293 294 static void 295 pf_nvaddr_to_addr(const nvlist_t *nvl, struct pf_addr *addr) 296 { 297 size_t len; 298 const void *data; 299 300 data = nvlist_get_binary(nvl, "addr", &len); 301 assert(len == sizeof(struct pf_addr)); 302 memcpy(addr, data, len); 303 } 304 305 static void 306 pfctl_nv_add_addr_wrap(nvlist_t *nvparent, const char *name, 307 const struct pf_addr_wrap *addr) 308 { 309 nvlist_t *nvl = nvlist_create(0); 310 311 nvlist_add_number(nvl, "type", addr->type); 312 nvlist_add_number(nvl, "iflags", addr->iflags); 313 if (addr->type == PF_ADDR_DYNIFTL) 314 nvlist_add_string(nvl, "ifname", addr->v.ifname); 315 if (addr->type == PF_ADDR_TABLE) 316 nvlist_add_string(nvl, "tblname", addr->v.tblname); 317 pfctl_nv_add_addr(nvl, "addr", &addr->v.a.addr); 318 pfctl_nv_add_addr(nvl, "mask", &addr->v.a.mask); 319 320 nvlist_add_nvlist(nvparent, name, nvl); 321 nvlist_destroy(nvl); 322 } 323 324 static void 325 pf_nvaddr_wrap_to_addr_wrap(const nvlist_t *nvl, struct pf_addr_wrap *addr) 326 { 327 bzero(addr, sizeof(*addr)); 328 329 addr->type = nvlist_get_number(nvl, "type"); 330 addr->iflags = nvlist_get_number(nvl, "iflags"); 331 if (addr->type == PF_ADDR_DYNIFTL) { 332 strlcpy(addr->v.ifname, nvlist_get_string(nvl, "ifname"), 333 IFNAMSIZ); 334 addr->p.dyncnt = nvlist_get_number(nvl, "dyncnt"); 335 } 336 if (addr->type == PF_ADDR_TABLE) { 337 strlcpy(addr->v.tblname, nvlist_get_string(nvl, "tblname"), 338 PF_TABLE_NAME_SIZE); 339 addr->p.tblcnt = nvlist_get_number(nvl, "tblcnt"); 340 } 341 342 pf_nvaddr_to_addr(nvlist_get_nvlist(nvl, "addr"), &addr->v.a.addr); 343 pf_nvaddr_to_addr(nvlist_get_nvlist(nvl, "mask"), &addr->v.a.mask); 344 } 345 346 static void 347 pfctl_nv_add_rule_addr(nvlist_t *nvparent, const char *name, 348 const struct pf_rule_addr *addr) 349 { 350 uint64_t ports[2]; 351 nvlist_t *nvl = nvlist_create(0); 352 353 pfctl_nv_add_addr_wrap(nvl, "addr", &addr->addr); 354 ports[0] = addr->port[0]; 355 ports[1] = addr->port[1]; 356 nvlist_add_number_array(nvl, "port", ports, 2); 357 nvlist_add_number(nvl, "neg", addr->neg); 358 nvlist_add_number(nvl, "port_op", addr->port_op); 359 360 nvlist_add_nvlist(nvparent, name, nvl); 361 nvlist_destroy(nvl); 362 } 363 364 static void 365 pf_nvrule_addr_to_rule_addr(const nvlist_t *nvl, struct pf_rule_addr *addr) 366 { 367 pf_nvaddr_wrap_to_addr_wrap(nvlist_get_nvlist(nvl, "addr"), &addr->addr); 368 369 pf_nvuint_16_array(nvl, "port", 2, addr->port, NULL); 370 addr->neg = nvlist_get_number(nvl, "neg"); 371 addr->port_op = nvlist_get_number(nvl, "port_op"); 372 } 373 374 static void 375 pfctl_nv_add_mape(nvlist_t *nvparent, const char *name, 376 const struct pf_mape_portset *mape) 377 { 378 nvlist_t *nvl = nvlist_create(0); 379 380 nvlist_add_number(nvl, "offset", mape->offset); 381 nvlist_add_number(nvl, "psidlen", mape->psidlen); 382 nvlist_add_number(nvl, "psid", mape->psid); 383 nvlist_add_nvlist(nvparent, name, nvl); 384 nvlist_destroy(nvl); 385 } 386 387 static void 388 pfctl_nv_add_pool(nvlist_t *nvparent, const char *name, 389 const struct pfctl_pool *pool) 390 { 391 uint64_t ports[2]; 392 nvlist_t *nvl = nvlist_create(0); 393 394 nvlist_add_binary(nvl, "key", &pool->key, sizeof(pool->key)); 395 pfctl_nv_add_addr(nvl, "counter", &pool->counter); 396 nvlist_add_number(nvl, "tblidx", pool->tblidx); 397 398 ports[0] = pool->proxy_port[0]; 399 ports[1] = pool->proxy_port[1]; 400 nvlist_add_number_array(nvl, "proxy_port", ports, 2); 401 nvlist_add_number(nvl, "opts", pool->opts); 402 pfctl_nv_add_mape(nvl, "mape", &pool->mape); 403 404 nvlist_add_nvlist(nvparent, name, nvl); 405 nvlist_destroy(nvl); 406 } 407 408 static void 409 pf_nvmape_to_mape(const nvlist_t *nvl, struct pf_mape_portset *mape) 410 { 411 mape->offset = nvlist_get_number(nvl, "offset"); 412 mape->psidlen = nvlist_get_number(nvl, "psidlen"); 413 mape->psid = nvlist_get_number(nvl, "psid"); 414 } 415 416 static void 417 pf_nvpool_to_pool(const nvlist_t *nvl, struct pfctl_pool *pool) 418 { 419 size_t len; 420 const void *data; 421 422 data = nvlist_get_binary(nvl, "key", &len); 423 assert(len == sizeof(pool->key)); 424 memcpy(&pool->key, data, len); 425 426 pf_nvaddr_to_addr(nvlist_get_nvlist(nvl, "counter"), &pool->counter); 427 428 pool->tblidx = nvlist_get_number(nvl, "tblidx"); 429 pf_nvuint_16_array(nvl, "proxy_port", 2, pool->proxy_port, NULL); 430 pool->opts = nvlist_get_number(nvl, "opts"); 431 432 if (nvlist_exists_nvlist(nvl, "mape")) 433 pf_nvmape_to_mape(nvlist_get_nvlist(nvl, "mape"), &pool->mape); 434 } 435 436 static void 437 pfctl_nv_add_uid(nvlist_t *nvparent, const char *name, 438 const struct pf_rule_uid *uid) 439 { 440 uint64_t uids[2]; 441 nvlist_t *nvl = nvlist_create(0); 442 443 uids[0] = uid->uid[0]; 444 uids[1] = uid->uid[1]; 445 nvlist_add_number_array(nvl, "uid", uids, 2); 446 nvlist_add_number(nvl, "op", uid->op); 447 448 nvlist_add_nvlist(nvparent, name, nvl); 449 nvlist_destroy(nvl); 450 } 451 452 static void 453 pf_nvrule_uid_to_rule_uid(const nvlist_t *nvl, struct pf_rule_uid *uid) 454 { 455 pf_nvuint_32_array(nvl, "uid", 2, uid->uid, NULL); 456 uid->op = nvlist_get_number(nvl, "op"); 457 } 458 459 static void 460 pfctl_nv_add_divert(nvlist_t *nvparent, const char *name, 461 const struct pfctl_rule *r) 462 { 463 nvlist_t *nvl = nvlist_create(0); 464 465 pfctl_nv_add_addr(nvl, "addr", &r->divert.addr); 466 nvlist_add_number(nvl, "port", r->divert.port); 467 468 nvlist_add_nvlist(nvparent, name, nvl); 469 nvlist_destroy(nvl); 470 } 471 472 static void 473 pf_nvdivert_to_divert(const nvlist_t *nvl, struct pfctl_rule *rule) 474 { 475 pf_nvaddr_to_addr(nvlist_get_nvlist(nvl, "addr"), &rule->divert.addr); 476 rule->divert.port = nvlist_get_number(nvl, "port"); 477 } 478 479 static void 480 pf_nvrule_to_rule(const nvlist_t *nvl, struct pfctl_rule *rule) 481 { 482 const uint64_t *skip; 483 const char *const *labels; 484 size_t skipcount, labelcount; 485 486 rule->nr = nvlist_get_number(nvl, "nr"); 487 488 pf_nvrule_addr_to_rule_addr(nvlist_get_nvlist(nvl, "src"), &rule->src); 489 pf_nvrule_addr_to_rule_addr(nvlist_get_nvlist(nvl, "dst"), &rule->dst); 490 491 skip = nvlist_get_number_array(nvl, "skip", &skipcount); 492 assert(skip); 493 assert(skipcount == PF_SKIP_COUNT); 494 for (int i = 0; i < PF_SKIP_COUNT; i++) 495 rule->skip[i].nr = skip[i]; 496 497 labels = nvlist_get_string_array(nvl, "labels", &labelcount); 498 assert(labelcount <= PF_RULE_MAX_LABEL_COUNT); 499 for (size_t i = 0; i < labelcount; i++) 500 strlcpy(rule->label[i], labels[i], PF_RULE_LABEL_SIZE); 501 rule->ridentifier = nvlist_get_number(nvl, "ridentifier"); 502 strlcpy(rule->ifname, nvlist_get_string(nvl, "ifname"), IFNAMSIZ); 503 strlcpy(rule->qname, nvlist_get_string(nvl, "qname"), PF_QNAME_SIZE); 504 strlcpy(rule->pqname, nvlist_get_string(nvl, "pqname"), PF_QNAME_SIZE); 505 strlcpy(rule->tagname, nvlist_get_string(nvl, "tagname"), 506 PF_TAG_NAME_SIZE); 507 strlcpy(rule->match_tagname, nvlist_get_string(nvl, "match_tagname"), 508 PF_TAG_NAME_SIZE); 509 510 strlcpy(rule->overload_tblname, nvlist_get_string(nvl, "overload_tblname"), 511 PF_TABLE_NAME_SIZE); 512 513 pf_nvpool_to_pool(nvlist_get_nvlist(nvl, "rpool"), &rule->rpool); 514 515 rule->evaluations = nvlist_get_number(nvl, "evaluations"); 516 pf_nvuint_64_array(nvl, "packets", 2, rule->packets, NULL); 517 pf_nvuint_64_array(nvl, "bytes", 2, rule->bytes, NULL); 518 519 if (nvlist_exists_number(nvl, "timestamp")) { 520 rule->last_active_timestamp = nvlist_get_number(nvl, "timestamp"); 521 } 522 523 rule->os_fingerprint = nvlist_get_number(nvl, "os_fingerprint"); 524 525 rule->rtableid = nvlist_get_number(nvl, "rtableid"); 526 pf_nvuint_32_array(nvl, "timeout", PFTM_MAX, rule->timeout, NULL); 527 rule->max_states = nvlist_get_number(nvl, "max_states"); 528 rule->max_src_nodes = nvlist_get_number(nvl, "max_src_nodes"); 529 rule->max_src_states = nvlist_get_number(nvl, "max_src_states"); 530 rule->max_src_conn = nvlist_get_number(nvl, "max_src_conn"); 531 rule->max_src_conn_rate.limit = 532 nvlist_get_number(nvl, "max_src_conn_rate.limit"); 533 rule->max_src_conn_rate.seconds = 534 nvlist_get_number(nvl, "max_src_conn_rate.seconds"); 535 rule->qid = nvlist_get_number(nvl, "qid"); 536 rule->pqid = nvlist_get_number(nvl, "pqid"); 537 rule->dnpipe = nvlist_get_number(nvl, "dnpipe"); 538 rule->dnrpipe = nvlist_get_number(nvl, "dnrpipe"); 539 rule->free_flags = nvlist_get_number(nvl, "dnflags"); 540 rule->prob = nvlist_get_number(nvl, "prob"); 541 rule->cuid = nvlist_get_number(nvl, "cuid"); 542 rule->cpid = nvlist_get_number(nvl, "cpid"); 543 544 rule->return_icmp = nvlist_get_number(nvl, "return_icmp"); 545 rule->return_icmp6 = nvlist_get_number(nvl, "return_icmp6"); 546 rule->max_mss = nvlist_get_number(nvl, "max_mss"); 547 rule->scrub_flags = nvlist_get_number(nvl, "scrub_flags"); 548 549 pf_nvrule_uid_to_rule_uid(nvlist_get_nvlist(nvl, "uid"), &rule->uid); 550 pf_nvrule_uid_to_rule_uid(nvlist_get_nvlist(nvl, "gid"), 551 (struct pf_rule_uid *)&rule->gid); 552 553 rule->rule_flag = nvlist_get_number(nvl, "rule_flag"); 554 rule->action = nvlist_get_number(nvl, "action"); 555 rule->direction = nvlist_get_number(nvl, "direction"); 556 rule->log = nvlist_get_number(nvl, "log"); 557 rule->logif = nvlist_get_number(nvl, "logif"); 558 rule->quick = nvlist_get_number(nvl, "quick"); 559 rule->ifnot = nvlist_get_number(nvl, "ifnot"); 560 rule->match_tag_not = nvlist_get_number(nvl, "match_tag_not"); 561 rule->natpass = nvlist_get_number(nvl, "natpass"); 562 563 rule->keep_state = nvlist_get_number(nvl, "keep_state"); 564 rule->af = nvlist_get_number(nvl, "af"); 565 rule->proto = nvlist_get_number(nvl, "proto"); 566 rule->type = nvlist_get_number(nvl, "type"); 567 rule->code = nvlist_get_number(nvl, "code"); 568 rule->flags = nvlist_get_number(nvl, "flags"); 569 rule->flagset = nvlist_get_number(nvl, "flagset"); 570 rule->min_ttl = nvlist_get_number(nvl, "min_ttl"); 571 rule->allow_opts = nvlist_get_number(nvl, "allow_opts"); 572 rule->rt = nvlist_get_number(nvl, "rt"); 573 rule->return_ttl = nvlist_get_number(nvl, "return_ttl"); 574 rule->tos = nvlist_get_number(nvl, "tos"); 575 rule->set_tos = nvlist_get_number(nvl, "set_tos"); 576 rule->anchor_relative = nvlist_get_number(nvl, "anchor_relative"); 577 rule->anchor_wildcard = nvlist_get_number(nvl, "anchor_wildcard"); 578 579 rule->flush = nvlist_get_number(nvl, "flush"); 580 rule->prio = nvlist_get_number(nvl, "prio"); 581 pf_nvuint_8_array(nvl, "set_prio", 2, rule->set_prio, NULL); 582 583 pf_nvdivert_to_divert(nvlist_get_nvlist(nvl, "divert"), rule); 584 585 rule->states_cur = nvlist_get_number(nvl, "states_cur"); 586 rule->states_tot = nvlist_get_number(nvl, "states_tot"); 587 rule->src_nodes = nvlist_get_number(nvl, "src_nodes"); 588 } 589 590 static void 591 pfctl_nveth_addr_to_eth_addr(const nvlist_t *nvl, struct pfctl_eth_addr *addr) 592 { 593 static const u_int8_t EMPTY_MAC[ETHER_ADDR_LEN] = { 0 }; 594 size_t len; 595 const void *data; 596 597 data = nvlist_get_binary(nvl, "addr", &len); 598 assert(len == sizeof(addr->addr)); 599 memcpy(addr->addr, data, sizeof(addr->addr)); 600 601 data = nvlist_get_binary(nvl, "mask", &len); 602 assert(len == sizeof(addr->mask)); 603 memcpy(addr->mask, data, sizeof(addr->mask)); 604 605 addr->neg = nvlist_get_bool(nvl, "neg"); 606 607 /* To make checks for 'is this address set?' easier. */ 608 addr->isset = memcmp(addr->addr, EMPTY_MAC, ETHER_ADDR_LEN) != 0; 609 } 610 611 static nvlist_t * 612 pfctl_eth_addr_to_nveth_addr(const struct pfctl_eth_addr *addr) 613 { 614 nvlist_t *nvl; 615 616 nvl = nvlist_create(0); 617 if (nvl == NULL) 618 return (NULL); 619 620 nvlist_add_bool(nvl, "neg", addr->neg); 621 nvlist_add_binary(nvl, "addr", &addr->addr, ETHER_ADDR_LEN); 622 nvlist_add_binary(nvl, "mask", &addr->mask, ETHER_ADDR_LEN); 623 624 return (nvl); 625 } 626 627 static void 628 pfctl_nveth_rule_to_eth_rule(const nvlist_t *nvl, struct pfctl_eth_rule *rule) 629 { 630 const char *const *labels; 631 size_t labelcount, i; 632 633 rule->nr = nvlist_get_number(nvl, "nr"); 634 rule->quick = nvlist_get_bool(nvl, "quick"); 635 strlcpy(rule->ifname, nvlist_get_string(nvl, "ifname"), IFNAMSIZ); 636 rule->ifnot = nvlist_get_bool(nvl, "ifnot"); 637 rule->direction = nvlist_get_number(nvl, "direction"); 638 rule->proto = nvlist_get_number(nvl, "proto"); 639 strlcpy(rule->match_tagname, nvlist_get_string(nvl, "match_tagname"), 640 PF_TAG_NAME_SIZE); 641 rule->match_tag = nvlist_get_number(nvl, "match_tag"); 642 rule->match_tag_not = nvlist_get_bool(nvl, "match_tag_not"); 643 644 labels = nvlist_get_string_array(nvl, "labels", &labelcount); 645 assert(labelcount <= PF_RULE_MAX_LABEL_COUNT); 646 for (i = 0; i < labelcount; i++) 647 strlcpy(rule->label[i], labels[i], PF_RULE_LABEL_SIZE); 648 rule->ridentifier = nvlist_get_number(nvl, "ridentifier"); 649 650 pfctl_nveth_addr_to_eth_addr(nvlist_get_nvlist(nvl, "src"), 651 &rule->src); 652 pfctl_nveth_addr_to_eth_addr(nvlist_get_nvlist(nvl, "dst"), 653 &rule->dst); 654 655 pf_nvrule_addr_to_rule_addr(nvlist_get_nvlist(nvl, "ipsrc"), 656 &rule->ipsrc); 657 pf_nvrule_addr_to_rule_addr(nvlist_get_nvlist(nvl, "ipdst"), 658 &rule->ipdst); 659 660 rule->evaluations = nvlist_get_number(nvl, "evaluations"); 661 rule->packets[0] = nvlist_get_number(nvl, "packets-in"); 662 rule->packets[1] = nvlist_get_number(nvl, "packets-out"); 663 rule->bytes[0] = nvlist_get_number(nvl, "bytes-in"); 664 rule->bytes[1] = nvlist_get_number(nvl, "bytes-out"); 665 666 if (nvlist_exists_number(nvl, "timestamp")) { 667 rule->last_active_timestamp = nvlist_get_number(nvl, "timestamp"); 668 } 669 670 strlcpy(rule->qname, nvlist_get_string(nvl, "qname"), PF_QNAME_SIZE); 671 strlcpy(rule->tagname, nvlist_get_string(nvl, "tagname"), 672 PF_TAG_NAME_SIZE); 673 674 rule->dnpipe = nvlist_get_number(nvl, "dnpipe"); 675 rule->dnflags = nvlist_get_number(nvl, "dnflags"); 676 677 rule->anchor_relative = nvlist_get_number(nvl, "anchor_relative"); 678 rule->anchor_wildcard = nvlist_get_number(nvl, "anchor_wildcard"); 679 680 strlcpy(rule->bridge_to, nvlist_get_string(nvl, "bridge_to"), 681 IFNAMSIZ); 682 683 rule->action = nvlist_get_number(nvl, "action"); 684 } 685 686 int 687 pfctl_get_eth_rulesets_info(int dev, struct pfctl_eth_rulesets_info *ri, 688 const char *path) 689 { 690 nvlist_t *nvl; 691 int ret; 692 693 bzero(ri, sizeof(*ri)); 694 695 nvl = nvlist_create(0); 696 nvlist_add_string(nvl, "path", path); 697 698 if ((ret = pfctl_do_ioctl(dev, DIOCGETETHRULESETS, 256, &nvl)) != 0) 699 return (ret); 700 701 ri->nr = nvlist_get_number(nvl, "nr"); 702 703 nvlist_destroy(nvl); 704 return (0); 705 } 706 707 int 708 pfctl_get_eth_ruleset(int dev, const char *path, int nr, 709 struct pfctl_eth_ruleset_info *ri) 710 { 711 nvlist_t *nvl; 712 int ret; 713 714 bzero(ri, sizeof(*ri)); 715 716 nvl = nvlist_create(0); 717 nvlist_add_string(nvl, "path", path); 718 nvlist_add_number(nvl, "nr", nr); 719 720 if ((ret = pfctl_do_ioctl(dev, DIOCGETETHRULESET, 1024, &nvl)) != 0) 721 return (ret); 722 723 ri->nr = nvlist_get_number(nvl, "nr"); 724 strlcpy(ri->path, nvlist_get_string(nvl, "path"), MAXPATHLEN); 725 strlcpy(ri->name, nvlist_get_string(nvl, "name"), 726 PF_ANCHOR_NAME_SIZE); 727 728 return (0); 729 } 730 731 int 732 pfctl_get_eth_rules_info(int dev, struct pfctl_eth_rules_info *rules, 733 const char *path) 734 { 735 nvlist_t *nvl; 736 int ret; 737 738 bzero(rules, sizeof(*rules)); 739 740 nvl = nvlist_create(0); 741 nvlist_add_string(nvl, "anchor", path); 742 743 if ((ret = pfctl_do_ioctl(dev, DIOCGETETHRULES, 1024, &nvl)) != 0) 744 return (ret); 745 746 rules->nr = nvlist_get_number(nvl, "nr"); 747 rules->ticket = nvlist_get_number(nvl, "ticket"); 748 749 nvlist_destroy(nvl); 750 return (0); 751 } 752 753 int 754 pfctl_get_eth_rule(int dev, uint32_t nr, uint32_t ticket, 755 const char *path, struct pfctl_eth_rule *rule, bool clear, 756 char *anchor_call) 757 { 758 nvlist_t *nvl; 759 int ret; 760 761 nvl = nvlist_create(0); 762 763 nvlist_add_string(nvl, "anchor", path); 764 nvlist_add_number(nvl, "ticket", ticket); 765 nvlist_add_number(nvl, "nr", nr); 766 nvlist_add_bool(nvl, "clear", clear); 767 768 if ((ret = pfctl_do_ioctl(dev, DIOCGETETHRULE, 4096, &nvl)) != 0) 769 return (ret); 770 771 pfctl_nveth_rule_to_eth_rule(nvl, rule); 772 773 if (anchor_call) 774 strlcpy(anchor_call, nvlist_get_string(nvl, "anchor_call"), 775 MAXPATHLEN); 776 777 nvlist_destroy(nvl); 778 return (0); 779 } 780 781 int 782 pfctl_add_eth_rule(int dev, const struct pfctl_eth_rule *r, const char *anchor, 783 const char *anchor_call, uint32_t ticket) 784 { 785 struct pfioc_nv nv; 786 nvlist_t *nvl, *addr; 787 void *packed; 788 int error = 0; 789 size_t labelcount, size; 790 791 nvl = nvlist_create(0); 792 793 nvlist_add_number(nvl, "ticket", ticket); 794 nvlist_add_string(nvl, "anchor", anchor); 795 nvlist_add_string(nvl, "anchor_call", anchor_call); 796 797 nvlist_add_number(nvl, "nr", r->nr); 798 nvlist_add_bool(nvl, "quick", r->quick); 799 nvlist_add_string(nvl, "ifname", r->ifname); 800 nvlist_add_bool(nvl, "ifnot", r->ifnot); 801 nvlist_add_number(nvl, "direction", r->direction); 802 nvlist_add_number(nvl, "proto", r->proto); 803 nvlist_add_string(nvl, "match_tagname", r->match_tagname); 804 nvlist_add_bool(nvl, "match_tag_not", r->match_tag_not); 805 806 addr = pfctl_eth_addr_to_nveth_addr(&r->src); 807 if (addr == NULL) { 808 nvlist_destroy(nvl); 809 return (ENOMEM); 810 } 811 nvlist_add_nvlist(nvl, "src", addr); 812 nvlist_destroy(addr); 813 814 addr = pfctl_eth_addr_to_nveth_addr(&r->dst); 815 if (addr == NULL) { 816 nvlist_destroy(nvl); 817 return (ENOMEM); 818 } 819 nvlist_add_nvlist(nvl, "dst", addr); 820 nvlist_destroy(addr); 821 822 pfctl_nv_add_rule_addr(nvl, "ipsrc", &r->ipsrc); 823 pfctl_nv_add_rule_addr(nvl, "ipdst", &r->ipdst); 824 825 labelcount = 0; 826 while (r->label[labelcount][0] != 0 && 827 labelcount < PF_RULE_MAX_LABEL_COUNT) { 828 nvlist_append_string_array(nvl, "labels", 829 r->label[labelcount]); 830 labelcount++; 831 } 832 nvlist_add_number(nvl, "ridentifier", r->ridentifier); 833 834 nvlist_add_string(nvl, "qname", r->qname); 835 nvlist_add_string(nvl, "tagname", r->tagname); 836 nvlist_add_number(nvl, "dnpipe", r->dnpipe); 837 nvlist_add_number(nvl, "dnflags", r->dnflags); 838 839 nvlist_add_string(nvl, "bridge_to", r->bridge_to); 840 841 nvlist_add_number(nvl, "action", r->action); 842 843 packed = nvlist_pack(nvl, &size); 844 if (packed == NULL) { 845 nvlist_destroy(nvl); 846 return (ENOMEM); 847 } 848 849 nv.len = size; 850 nv.size = size; 851 nv.data = packed; 852 853 if (ioctl(dev, DIOCADDETHRULE, &nv) != 0) 854 error = errno; 855 856 free(packed); 857 nvlist_destroy(nvl); 858 859 return (error); 860 } 861 862 int 863 pfctl_add_rule(int dev, const struct pfctl_rule *r, const char *anchor, 864 const char *anchor_call, uint32_t ticket, uint32_t pool_ticket) 865 { 866 struct pfioc_nv nv; 867 uint64_t timeouts[PFTM_MAX]; 868 uint64_t set_prio[2]; 869 nvlist_t *nvl, *nvlr; 870 size_t labelcount; 871 int ret; 872 873 nvl = nvlist_create(0); 874 nvlr = nvlist_create(0); 875 876 nvlist_add_number(nvl, "ticket", ticket); 877 nvlist_add_number(nvl, "pool_ticket", pool_ticket); 878 nvlist_add_string(nvl, "anchor", anchor); 879 nvlist_add_string(nvl, "anchor_call", anchor_call); 880 881 nvlist_add_number(nvlr, "nr", r->nr); 882 pfctl_nv_add_rule_addr(nvlr, "src", &r->src); 883 pfctl_nv_add_rule_addr(nvlr, "dst", &r->dst); 884 885 labelcount = 0; 886 while (r->label[labelcount][0] != 0 && 887 labelcount < PF_RULE_MAX_LABEL_COUNT) { 888 nvlist_append_string_array(nvlr, "labels", 889 r->label[labelcount]); 890 labelcount++; 891 } 892 nvlist_add_number(nvlr, "ridentifier", r->ridentifier); 893 894 nvlist_add_string(nvlr, "ifname", r->ifname); 895 nvlist_add_string(nvlr, "qname", r->qname); 896 nvlist_add_string(nvlr, "pqname", r->pqname); 897 nvlist_add_string(nvlr, "tagname", r->tagname); 898 nvlist_add_string(nvlr, "match_tagname", r->match_tagname); 899 nvlist_add_string(nvlr, "overload_tblname", r->overload_tblname); 900 901 pfctl_nv_add_pool(nvlr, "rpool", &r->rpool); 902 903 nvlist_add_number(nvlr, "os_fingerprint", r->os_fingerprint); 904 905 nvlist_add_number(nvlr, "rtableid", r->rtableid); 906 for (int i = 0; i < PFTM_MAX; i++) 907 timeouts[i] = r->timeout[i]; 908 nvlist_add_number_array(nvlr, "timeout", timeouts, PFTM_MAX); 909 nvlist_add_number(nvlr, "max_states", r->max_states); 910 nvlist_add_number(nvlr, "max_src_nodes", r->max_src_nodes); 911 nvlist_add_number(nvlr, "max_src_states", r->max_src_states); 912 nvlist_add_number(nvlr, "max_src_conn", r->max_src_conn); 913 nvlist_add_number(nvlr, "max_src_conn_rate.limit", 914 r->max_src_conn_rate.limit); 915 nvlist_add_number(nvlr, "max_src_conn_rate.seconds", 916 r->max_src_conn_rate.seconds); 917 nvlist_add_number(nvlr, "dnpipe", r->dnpipe); 918 nvlist_add_number(nvlr, "dnrpipe", r->dnrpipe); 919 nvlist_add_number(nvlr, "dnflags", r->free_flags); 920 nvlist_add_number(nvlr, "prob", r->prob); 921 nvlist_add_number(nvlr, "cuid", r->cuid); 922 nvlist_add_number(nvlr, "cpid", r->cpid); 923 924 nvlist_add_number(nvlr, "return_icmp", r->return_icmp); 925 nvlist_add_number(nvlr, "return_icmp6", r->return_icmp6); 926 927 nvlist_add_number(nvlr, "max_mss", r->max_mss); 928 nvlist_add_number(nvlr, "scrub_flags", r->scrub_flags); 929 930 pfctl_nv_add_uid(nvlr, "uid", &r->uid); 931 pfctl_nv_add_uid(nvlr, "gid", (const struct pf_rule_uid *)&r->gid); 932 933 nvlist_add_number(nvlr, "rule_flag", r->rule_flag); 934 nvlist_add_number(nvlr, "action", r->action); 935 nvlist_add_number(nvlr, "direction", r->direction); 936 nvlist_add_number(nvlr, "log", r->log); 937 nvlist_add_number(nvlr, "logif", r->logif); 938 nvlist_add_number(nvlr, "quick", r->quick); 939 nvlist_add_number(nvlr, "ifnot", r->ifnot); 940 nvlist_add_number(nvlr, "match_tag_not", r->match_tag_not); 941 nvlist_add_number(nvlr, "natpass", r->natpass); 942 943 nvlist_add_number(nvlr, "keep_state", r->keep_state); 944 nvlist_add_number(nvlr, "af", r->af); 945 nvlist_add_number(nvlr, "proto", r->proto); 946 nvlist_add_number(nvlr, "type", r->type); 947 nvlist_add_number(nvlr, "code", r->code); 948 nvlist_add_number(nvlr, "flags", r->flags); 949 nvlist_add_number(nvlr, "flagset", r->flagset); 950 nvlist_add_number(nvlr, "min_ttl", r->min_ttl); 951 nvlist_add_number(nvlr, "allow_opts", r->allow_opts); 952 nvlist_add_number(nvlr, "rt", r->rt); 953 nvlist_add_number(nvlr, "return_ttl", r->return_ttl); 954 nvlist_add_number(nvlr, "tos", r->tos); 955 nvlist_add_number(nvlr, "set_tos", r->set_tos); 956 nvlist_add_number(nvlr, "anchor_relative", r->anchor_relative); 957 nvlist_add_number(nvlr, "anchor_wildcard", r->anchor_wildcard); 958 959 nvlist_add_number(nvlr, "flush", r->flush); 960 961 nvlist_add_number(nvlr, "prio", r->prio); 962 set_prio[0] = r->set_prio[0]; 963 set_prio[1] = r->set_prio[1]; 964 nvlist_add_number_array(nvlr, "set_prio", set_prio, 2); 965 966 pfctl_nv_add_divert(nvlr, "divert", r); 967 968 nvlist_add_nvlist(nvl, "rule", nvlr); 969 nvlist_destroy(nvlr); 970 971 /* Now do the call. */ 972 nv.data = nvlist_pack(nvl, &nv.len); 973 nv.size = nv.len; 974 975 ret = ioctl(dev, DIOCADDRULENV, &nv); 976 if (ret == -1) 977 ret = errno; 978 979 free(nv.data); 980 nvlist_destroy(nvl); 981 982 return (ret); 983 } 984 985 int 986 pfctl_get_rules_info(int dev, struct pfctl_rules_info *rules, uint32_t ruleset, 987 const char *path) 988 { 989 struct pfioc_rule pr; 990 int ret; 991 992 bzero(&pr, sizeof(pr)); 993 if (strlcpy(pr.anchor, path, sizeof(pr.anchor)) >= sizeof(pr.anchor)) 994 return (E2BIG); 995 996 pr.rule.action = ruleset; 997 ret = ioctl(dev, DIOCGETRULES, &pr); 998 if (ret != 0) 999 return (ret); 1000 1001 rules->nr = pr.nr; 1002 rules->ticket = pr.ticket; 1003 1004 return (0); 1005 } 1006 1007 int 1008 pfctl_get_rule(int dev, uint32_t nr, uint32_t ticket, const char *anchor, 1009 uint32_t ruleset, struct pfctl_rule *rule, char *anchor_call) 1010 { 1011 return (pfctl_get_clear_rule(dev, nr, ticket, anchor, ruleset, rule, 1012 anchor_call, false)); 1013 } 1014 1015 int pfctl_get_clear_rule(int dev, uint32_t nr, uint32_t ticket, 1016 const char *anchor, uint32_t ruleset, struct pfctl_rule *rule, 1017 char *anchor_call, bool clear) 1018 { 1019 nvlist_t *nvl; 1020 int ret; 1021 1022 nvl = nvlist_create(0); 1023 if (nvl == 0) 1024 return (ENOMEM); 1025 1026 nvlist_add_number(nvl, "nr", nr); 1027 nvlist_add_number(nvl, "ticket", ticket); 1028 nvlist_add_string(nvl, "anchor", anchor); 1029 nvlist_add_number(nvl, "ruleset", ruleset); 1030 1031 if (clear) 1032 nvlist_add_bool(nvl, "clear_counter", true); 1033 1034 if ((ret = pfctl_do_ioctl(dev, DIOCGETRULENV, 8192, &nvl)) != 0) 1035 return (ret); 1036 1037 pf_nvrule_to_rule(nvlist_get_nvlist(nvl, "rule"), rule); 1038 1039 if (anchor_call) 1040 strlcpy(anchor_call, nvlist_get_string(nvl, "anchor_call"), 1041 MAXPATHLEN); 1042 1043 nvlist_destroy(nvl); 1044 1045 return (0); 1046 } 1047 1048 int 1049 pfctl_set_keepcounters(int dev, bool keep) 1050 { 1051 struct pfioc_nv nv; 1052 nvlist_t *nvl; 1053 int ret; 1054 1055 nvl = nvlist_create(0); 1056 1057 nvlist_add_bool(nvl, "keep_counters", keep); 1058 1059 nv.data = nvlist_pack(nvl, &nv.len); 1060 nv.size = nv.len; 1061 1062 nvlist_destroy(nvl); 1063 1064 ret = ioctl(dev, DIOCKEEPCOUNTERS, &nv); 1065 1066 free(nv.data); 1067 return (ret); 1068 } 1069 1070 static void 1071 pfctl_nv_add_state_cmp(nvlist_t *nvl, const char *name, 1072 const struct pfctl_state_cmp *cmp) 1073 { 1074 nvlist_t *nv; 1075 1076 nv = nvlist_create(0); 1077 1078 nvlist_add_number(nv, "id", cmp->id); 1079 nvlist_add_number(nv, "creatorid", htonl(cmp->creatorid)); 1080 nvlist_add_number(nv, "direction", cmp->direction); 1081 1082 nvlist_add_nvlist(nvl, name, nv); 1083 nvlist_destroy(nv); 1084 } 1085 1086 static void 1087 pf_state_key_export_to_state_key(struct pfctl_state_key *ps, 1088 const struct pf_state_key_export *s) 1089 { 1090 bcopy(s->addr, ps->addr, sizeof(ps->addr[0]) * 2); 1091 ps->port[0] = s->port[0]; 1092 ps->port[1] = s->port[1]; 1093 } 1094 1095 static void 1096 pf_state_peer_export_to_state_peer(struct pfctl_state_peer *ps, 1097 const struct pf_state_peer_export *s) 1098 { 1099 /* Ignore scrub. */ 1100 ps->seqlo = s->seqlo; 1101 ps->seqhi = s->seqhi; 1102 ps->seqdiff = s->seqdiff; 1103 /* Ignore max_win & mss */ 1104 ps->state = s->state; 1105 ps->wscale = s->wscale; 1106 } 1107 1108 static void 1109 pf_state_export_to_state(struct pfctl_state *ps, const struct pf_state_export *s) 1110 { 1111 assert(s->version >= PF_STATE_VERSION); 1112 1113 ps->id = s->id; 1114 strlcpy(ps->ifname, s->ifname, sizeof(ps->ifname)); 1115 strlcpy(ps->orig_ifname, s->orig_ifname, sizeof(ps->orig_ifname)); 1116 strlcpy(ps->rt_ifname, s->rt_ifname, sizeof(ps->rt_ifname)); 1117 pf_state_key_export_to_state_key(&ps->key[0], &s->key[0]); 1118 pf_state_key_export_to_state_key(&ps->key[1], &s->key[1]); 1119 pf_state_peer_export_to_state_peer(&ps->src, &s->src); 1120 pf_state_peer_export_to_state_peer(&ps->dst, &s->dst); 1121 bcopy(&s->rt_addr, &ps->rt_addr, sizeof(ps->rt_addr)); 1122 ps->rule = ntohl(s->rule); 1123 ps->anchor = ntohl(s->anchor); 1124 ps->nat_rule = ntohl(s->nat_rule); 1125 ps->creation = ntohl(s->creation); 1126 ps->expire = ntohl(s->expire); 1127 ps->packets[0] = s->packets[0]; 1128 ps->packets[1] = s->packets[1]; 1129 ps->bytes[0] = s->bytes[0]; 1130 ps->bytes[1] = s->bytes[1]; 1131 ps->creatorid = ntohl(s->creatorid); 1132 ps->key[0].proto = s->proto; 1133 ps->key[1].proto = s->proto; 1134 ps->key[0].af = s->af; 1135 ps->key[1].af = s->af; 1136 ps->direction = s->direction; 1137 ps->state_flags = ntohs(s->state_flags); 1138 ps->sync_flags = ntohs(s->sync_flags); 1139 ps->qid = ntohs(s->qid); 1140 ps->pqid = ntohs(s->pqid); 1141 ps->dnpipe = ntohs(s->dnpipe); 1142 ps->dnrpipe = ntohs(s->dnrpipe); 1143 ps->rtableid = ntohl(s->rtableid); 1144 ps->min_ttl = s->min_ttl; 1145 ps->set_tos = s->set_tos; 1146 ps->max_mss = ntohs(s->max_mss); 1147 ps->rt = s->rt; 1148 ps->set_prio[0] = s->set_prio[0]; 1149 ps->set_prio[1] = s->set_prio[1]; 1150 } 1151 1152 int 1153 pfctl_get_states(int dev, struct pfctl_states *states) 1154 { 1155 struct pfioc_states_v2 ps; 1156 struct pf_state_export *p; 1157 char *inbuf = NULL, *newinbuf = NULL; 1158 unsigned int len = 0; 1159 int i, error; 1160 1161 bzero(&ps, sizeof(ps)); 1162 ps.ps_req_version = PF_STATE_VERSION; 1163 1164 bzero(states, sizeof(*states)); 1165 TAILQ_INIT(&states->states); 1166 1167 for (;;) { 1168 ps.ps_len = len; 1169 if (len) { 1170 newinbuf = realloc(inbuf, len); 1171 if (newinbuf == NULL) 1172 return (ENOMEM); 1173 ps.ps_buf = inbuf = newinbuf; 1174 } 1175 if ((error = ioctl(dev, DIOCGETSTATESV2, &ps)) < 0) { 1176 free(inbuf); 1177 return (error); 1178 } 1179 if (ps.ps_len + sizeof(struct pfioc_states_v2) < len) 1180 break; 1181 if (len == 0 && ps.ps_len == 0) 1182 goto out; 1183 if (len == 0 && ps.ps_len != 0) 1184 len = ps.ps_len; 1185 if (ps.ps_len == 0) 1186 goto out; /* no states */ 1187 len *= 2; 1188 } 1189 p = ps.ps_states; 1190 1191 for (i = 0; i < ps.ps_len; i += sizeof(*p), p++) { 1192 struct pfctl_state *s = malloc(sizeof(*s)); 1193 if (s == NULL) { 1194 pfctl_free_states(states); 1195 error = ENOMEM; 1196 goto out; 1197 } 1198 1199 pf_state_export_to_state(s, p); 1200 TAILQ_INSERT_TAIL(&states->states, s, entry); 1201 } 1202 1203 out: 1204 free(inbuf); 1205 return (error); 1206 } 1207 1208 void 1209 pfctl_free_states(struct pfctl_states *states) 1210 { 1211 struct pfctl_state *s, *tmp; 1212 1213 TAILQ_FOREACH_SAFE(s, &states->states, entry, tmp) { 1214 free(s); 1215 } 1216 1217 bzero(states, sizeof(*states)); 1218 } 1219 1220 static int 1221 _pfctl_clear_states(int dev, const struct pfctl_kill *kill, 1222 unsigned int *killed, uint64_t ioctlval) 1223 { 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 if ((ret = pfctl_do_ioctl(dev, ioctlval, 1024, &nvl)) != 0) 1240 return (ret); 1241 1242 if (killed) 1243 *killed = nvlist_get_number(nvl, "killed"); 1244 1245 nvlist_destroy(nvl); 1246 1247 return (ret); 1248 } 1249 1250 int 1251 pfctl_clear_states(int dev, const struct pfctl_kill *kill, 1252 unsigned int *killed) 1253 { 1254 return (_pfctl_clear_states(dev, kill, killed, DIOCCLRSTATESNV)); 1255 } 1256 1257 int 1258 pfctl_kill_states(int dev, const struct pfctl_kill *kill, unsigned int *killed) 1259 { 1260 return (_pfctl_clear_states(dev, kill, killed, DIOCKILLSTATESNV)); 1261 } 1262 1263 int 1264 pfctl_clear_rules(int dev, const char *anchorname) 1265 { 1266 struct pfioc_trans trans; 1267 struct pfioc_trans_e transe[2]; 1268 int ret; 1269 1270 bzero(&trans, sizeof(trans)); 1271 bzero(&transe, sizeof(transe)); 1272 1273 transe[0].rs_num = PF_RULESET_SCRUB; 1274 if (strlcpy(transe[0].anchor, anchorname, sizeof(transe[0].anchor)) 1275 >= sizeof(transe[0].anchor)) 1276 return (E2BIG); 1277 1278 transe[1].rs_num = PF_RULESET_FILTER; 1279 if (strlcpy(transe[1].anchor, anchorname, sizeof(transe[1].anchor)) 1280 >= sizeof(transe[1].anchor)) 1281 return (E2BIG); 1282 1283 trans.size = 2; 1284 trans.esize = sizeof(transe[0]); 1285 trans.array = transe; 1286 1287 ret = ioctl(dev, DIOCXBEGIN, &trans); 1288 if (ret != 0) 1289 return (ret); 1290 return ioctl(dev, DIOCXCOMMIT, &trans); 1291 } 1292 1293 int 1294 pfctl_clear_nat(int dev, const char *anchorname) 1295 { 1296 struct pfioc_trans trans; 1297 struct pfioc_trans_e transe[3]; 1298 int ret; 1299 1300 bzero(&trans, sizeof(trans)); 1301 bzero(&transe, sizeof(transe)); 1302 1303 transe[0].rs_num = PF_RULESET_NAT; 1304 if (strlcpy(transe[0].anchor, anchorname, sizeof(transe[0].anchor)) 1305 >= sizeof(transe[0].anchor)) 1306 return (E2BIG); 1307 1308 transe[1].rs_num = PF_RULESET_BINAT; 1309 if (strlcpy(transe[1].anchor, anchorname, sizeof(transe[1].anchor)) 1310 >= sizeof(transe[0].anchor)) 1311 return (E2BIG); 1312 1313 transe[2].rs_num = PF_RULESET_RDR; 1314 if (strlcpy(transe[2].anchor, anchorname, sizeof(transe[2].anchor)) 1315 >= sizeof(transe[2].anchor)) 1316 return (E2BIG); 1317 1318 trans.size = 3; 1319 trans.esize = sizeof(transe[0]); 1320 trans.array = transe; 1321 1322 ret = ioctl(dev, DIOCXBEGIN, &trans); 1323 if (ret != 0) 1324 return (ret); 1325 return ioctl(dev, DIOCXCOMMIT, &trans); 1326 } 1327 int 1328 pfctl_clear_eth_rules(int dev, const char *anchorname) 1329 { 1330 struct pfioc_trans trans; 1331 struct pfioc_trans_e transe; 1332 int ret; 1333 1334 bzero(&trans, sizeof(trans)); 1335 bzero(&transe, sizeof(transe)); 1336 1337 transe.rs_num = PF_RULESET_ETH; 1338 if (strlcpy(transe.anchor, anchorname, sizeof(transe.anchor)) 1339 >= sizeof(transe.anchor)) 1340 return (E2BIG); 1341 1342 trans.size = 1; 1343 trans.esize = sizeof(transe); 1344 trans.array = &transe; 1345 1346 ret = ioctl(dev, DIOCXBEGIN, &trans); 1347 if (ret != 0) 1348 return (ret); 1349 return ioctl(dev, DIOCXCOMMIT, &trans); 1350 } 1351 1352 static int 1353 pfctl_get_limit(int dev, const int index, uint *limit) 1354 { 1355 struct pfioc_limit pl; 1356 1357 bzero(&pl, sizeof(pl)); 1358 pl.index = index; 1359 1360 if (ioctl(dev, DIOCGETLIMIT, &pl) == -1) 1361 return (errno); 1362 1363 *limit = pl.limit; 1364 1365 return (0); 1366 } 1367 1368 int 1369 pfctl_set_syncookies(int dev, const struct pfctl_syncookies *s) 1370 { 1371 struct pfioc_nv nv; 1372 nvlist_t *nvl; 1373 int ret; 1374 uint state_limit; 1375 uint64_t lim, hi, lo; 1376 1377 ret = pfctl_get_limit(dev, PF_LIMIT_STATES, &state_limit); 1378 if (ret != 0) 1379 return (ret); 1380 1381 lim = state_limit; 1382 hi = lim * s->highwater / 100; 1383 lo = lim * s->lowwater / 100; 1384 1385 if (lo == hi) 1386 hi++; 1387 1388 nvl = nvlist_create(0); 1389 1390 nvlist_add_bool(nvl, "enabled", s->mode != PFCTL_SYNCOOKIES_NEVER); 1391 nvlist_add_bool(nvl, "adaptive", s->mode == PFCTL_SYNCOOKIES_ADAPTIVE); 1392 nvlist_add_number(nvl, "highwater", hi); 1393 nvlist_add_number(nvl, "lowwater", lo); 1394 1395 nv.data = nvlist_pack(nvl, &nv.len); 1396 nv.size = nv.len; 1397 nvlist_destroy(nvl); 1398 nvl = NULL; 1399 1400 ret = ioctl(dev, DIOCSETSYNCOOKIES, &nv); 1401 1402 free(nv.data); 1403 return (ret); 1404 } 1405 1406 int 1407 pfctl_get_syncookies(int dev, struct pfctl_syncookies *s) 1408 { 1409 nvlist_t *nvl; 1410 int ret; 1411 uint state_limit; 1412 bool enabled, adaptive; 1413 1414 ret = pfctl_get_limit(dev, PF_LIMIT_STATES, &state_limit); 1415 if (ret != 0) 1416 return (ret); 1417 1418 bzero(s, sizeof(*s)); 1419 1420 nvl = nvlist_create(0); 1421 1422 if ((ret = pfctl_do_ioctl(dev, DIOCGETSYNCOOKIES, 256, &nvl)) != 0) 1423 return (errno); 1424 1425 enabled = nvlist_get_bool(nvl, "enabled"); 1426 adaptive = nvlist_get_bool(nvl, "adaptive"); 1427 1428 if (enabled) { 1429 if (adaptive) 1430 s->mode = PFCTL_SYNCOOKIES_ADAPTIVE; 1431 else 1432 s->mode = PFCTL_SYNCOOKIES_ALWAYS; 1433 } else { 1434 s->mode = PFCTL_SYNCOOKIES_NEVER; 1435 } 1436 1437 s->highwater = nvlist_get_number(nvl, "highwater") * 100 / state_limit; 1438 s->lowwater = nvlist_get_number(nvl, "lowwater") * 100 / state_limit; 1439 1440 nvlist_destroy(nvl); 1441 1442 return (0); 1443 } 1444 1445 int 1446 pfctl_table_add_addrs(int dev, struct pfr_table *tbl, struct pfr_addr 1447 *addr, int size, int *nadd, int flags) 1448 { 1449 struct pfioc_table io; 1450 1451 if (tbl == NULL || size < 0 || (size && addr == NULL)) { 1452 return (EINVAL); 1453 } 1454 bzero(&io, sizeof io); 1455 io.pfrio_flags = flags; 1456 io.pfrio_table = *tbl; 1457 io.pfrio_buffer = addr; 1458 io.pfrio_esize = sizeof(*addr); 1459 io.pfrio_size = size; 1460 1461 if (ioctl(dev, DIOCRADDADDRS, &io)) 1462 return (errno); 1463 if (nadd != NULL) 1464 *nadd = io.pfrio_nadd; 1465 return (0); 1466 } 1467 1468 int 1469 pfctl_table_del_addrs(int dev, struct pfr_table *tbl, struct pfr_addr 1470 *addr, int size, int *ndel, int flags) 1471 { 1472 struct pfioc_table io; 1473 1474 if (tbl == NULL || size < 0 || (size && addr == NULL)) { 1475 return (EINVAL); 1476 } 1477 bzero(&io, sizeof io); 1478 io.pfrio_flags = flags; 1479 io.pfrio_table = *tbl; 1480 io.pfrio_buffer = addr; 1481 io.pfrio_esize = sizeof(*addr); 1482 io.pfrio_size = size; 1483 1484 if (ioctl(dev, DIOCRDELADDRS, &io)) 1485 return (errno); 1486 if (ndel != NULL) 1487 *ndel = io.pfrio_ndel; 1488 return (0); 1489 } 1490 1491 int 1492 pfctl_table_set_addrs(int dev, struct pfr_table *tbl, struct pfr_addr 1493 *addr, int size, int *size2, int *nadd, int *ndel, int *nchange, int flags) 1494 { 1495 struct pfioc_table io; 1496 1497 if (tbl == NULL || size < 0 || (size && addr == NULL)) { 1498 return (EINVAL); 1499 } 1500 bzero(&io, sizeof io); 1501 io.pfrio_flags = flags; 1502 io.pfrio_table = *tbl; 1503 io.pfrio_buffer = addr; 1504 io.pfrio_esize = sizeof(*addr); 1505 io.pfrio_size = size; 1506 io.pfrio_size2 = (size2 != NULL) ? *size2 : 0; 1507 if (ioctl(dev, DIOCRSETADDRS, &io)) 1508 return (-1); 1509 if (nadd != NULL) 1510 *nadd = io.pfrio_nadd; 1511 if (ndel != NULL) 1512 *ndel = io.pfrio_ndel; 1513 if (nchange != NULL) 1514 *nchange = io.pfrio_nchange; 1515 if (size2 != NULL) 1516 *size2 = io.pfrio_size2; 1517 return (0); 1518 } 1519 1520 int pfctl_table_get_addrs(int dev, struct pfr_table *tbl, struct pfr_addr *addr, 1521 int *size, int flags) 1522 { 1523 struct pfioc_table io; 1524 1525 if (tbl == NULL || size == NULL || *size < 0 || 1526 (*size && addr == NULL)) { 1527 return (EINVAL); 1528 } 1529 bzero(&io, sizeof io); 1530 io.pfrio_flags = flags; 1531 io.pfrio_table = *tbl; 1532 io.pfrio_buffer = addr; 1533 io.pfrio_esize = sizeof(*addr); 1534 io.pfrio_size = *size; 1535 if (ioctl(dev, DIOCRGETADDRS, &io)) 1536 return (-1); 1537 *size = io.pfrio_size; 1538 return (0); 1539 } 1540