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 32 #include <sys/cdefs.h> 33 34 #include <sys/ioctl.h> 35 #include <sys/nv.h> 36 #include <sys/queue.h> 37 #include <sys/types.h> 38 39 #include <net/if.h> 40 #include <net/pfvar.h> 41 #include <netinet/in.h> 42 43 #include <assert.h> 44 #include <err.h> 45 #include <errno.h> 46 #include <stdlib.h> 47 #include <string.h> 48 49 #include "libpfctl.h" 50 51 const char* PFCTL_SYNCOOKIES_MODE_NAMES[] = { 52 "never", 53 "always", 54 "adaptive" 55 }; 56 57 static int _pfctl_clear_states(int , const struct pfctl_kill *, 58 unsigned int *, uint64_t); 59 60 static int 61 pfctl_do_ioctl(int dev, uint cmd, size_t size, nvlist_t **nvl) 62 { 63 struct pfioc_nv nv; 64 void *data; 65 size_t nvlen; 66 int ret; 67 68 data = nvlist_pack(*nvl, &nvlen); 69 if (nvlen > size) 70 size = nvlen; 71 72 retry: 73 nv.data = malloc(size); 74 memcpy(nv.data, data, nvlen); 75 76 nv.len = nvlen; 77 nv.size = size; 78 79 ret = ioctl(dev, cmd, &nv); 80 if (ret == -1 && errno == ENOSPC) { 81 size *= 2; 82 free(nv.data); 83 goto retry; 84 } 85 86 nvlist_destroy(*nvl); 87 *nvl = NULL; 88 89 if (ret == 0) { 90 *nvl = nvlist_unpack(nv.data, nv.len, 0); 91 if (*nvl == NULL) { 92 ret = EIO; 93 goto out; 94 } 95 } else { 96 ret = errno; 97 } 98 99 out: 100 free(data); 101 free(nv.data); 102 103 return (ret); 104 } 105 106 static void 107 pf_nvuint_8_array(const nvlist_t *nvl, const char *name, size_t maxelems, 108 uint8_t *numbers, size_t *nelems) 109 { 110 const uint64_t *tmp; 111 size_t elems; 112 113 tmp = nvlist_get_number_array(nvl, name, &elems); 114 assert(elems <= maxelems); 115 116 for (size_t i = 0; i < elems; i++) 117 numbers[i] = tmp[i]; 118 119 if (nelems) 120 *nelems = elems; 121 } 122 123 static void 124 pf_nvuint_16_array(const nvlist_t *nvl, const char *name, size_t maxelems, 125 uint16_t *numbers, size_t *nelems) 126 { 127 const uint64_t *tmp; 128 size_t elems; 129 130 tmp = nvlist_get_number_array(nvl, name, &elems); 131 assert(elems <= maxelems); 132 133 for (size_t i = 0; i < elems; i++) 134 numbers[i] = tmp[i]; 135 136 if (nelems) 137 *nelems = elems; 138 } 139 140 static void 141 pf_nvuint_32_array(const nvlist_t *nvl, const char *name, size_t maxelems, 142 uint32_t *numbers, size_t *nelems) 143 { 144 const uint64_t *tmp; 145 size_t elems; 146 147 tmp = nvlist_get_number_array(nvl, name, &elems); 148 149 for (size_t i = 0; i < elems && i < maxelems; i++) 150 numbers[i] = tmp[i]; 151 152 if (nelems) 153 *nelems = elems; 154 } 155 156 static void 157 pf_nvuint_64_array(const nvlist_t *nvl, const char *name, size_t maxelems, 158 uint64_t *numbers, size_t *nelems) 159 { 160 const uint64_t *tmp; 161 size_t elems; 162 163 tmp = nvlist_get_number_array(nvl, name, &elems); 164 assert(elems <= maxelems); 165 166 for (size_t i = 0; i < elems; i++) 167 numbers[i] = tmp[i]; 168 169 if (nelems) 170 *nelems = elems; 171 } 172 173 static void 174 _pfctl_get_status_counters(const nvlist_t *nvl, 175 struct pfctl_status_counters *counters) 176 { 177 const uint64_t *ids, *counts; 178 const char *const *names; 179 size_t id_len, counter_len, names_len; 180 181 ids = nvlist_get_number_array(nvl, "ids", &id_len); 182 counts = nvlist_get_number_array(nvl, "counters", &counter_len); 183 names = nvlist_get_string_array(nvl, "names", &names_len); 184 assert(id_len == counter_len); 185 assert(counter_len == names_len); 186 187 TAILQ_INIT(counters); 188 189 for (size_t i = 0; i < id_len; i++) { 190 struct pfctl_status_counter *c; 191 192 c = malloc(sizeof(*c)); 193 194 c->id = ids[i]; 195 c->counter = counts[i]; 196 c->name = strdup(names[i]); 197 198 TAILQ_INSERT_TAIL(counters, c, entry); 199 } 200 } 201 202 struct pfctl_status * 203 pfctl_get_status(int dev) 204 { 205 struct pfctl_status *status; 206 nvlist_t *nvl; 207 size_t len; 208 const void *chksum; 209 210 status = calloc(1, sizeof(*status)); 211 if (status == NULL) 212 return (NULL); 213 214 nvl = nvlist_create(0); 215 216 if (pfctl_do_ioctl(dev, DIOCGETSTATUSNV, 4096, &nvl)) { 217 free(status); 218 return (NULL); 219 } 220 221 status->running = nvlist_get_bool(nvl, "running"); 222 status->since = nvlist_get_number(nvl, "since"); 223 status->debug = nvlist_get_number(nvl, "debug"); 224 status->hostid = ntohl(nvlist_get_number(nvl, "hostid")); 225 status->states = nvlist_get_number(nvl, "states"); 226 status->src_nodes = nvlist_get_number(nvl, "src_nodes"); 227 status->syncookies_active = nvlist_get_bool(nvl, "syncookies_active"); 228 status->reass = nvlist_get_number(nvl, "reass"); 229 230 strlcpy(status->ifname, nvlist_get_string(nvl, "ifname"), 231 IFNAMSIZ); 232 chksum = nvlist_get_binary(nvl, "chksum", &len); 233 assert(len == PF_MD5_DIGEST_LENGTH); 234 memcpy(status->pf_chksum, chksum, len); 235 236 _pfctl_get_status_counters(nvlist_get_nvlist(nvl, "counters"), 237 &status->counters); 238 _pfctl_get_status_counters(nvlist_get_nvlist(nvl, "lcounters"), 239 &status->lcounters); 240 _pfctl_get_status_counters(nvlist_get_nvlist(nvl, "fcounters"), 241 &status->fcounters); 242 _pfctl_get_status_counters(nvlist_get_nvlist(nvl, "scounters"), 243 &status->scounters); 244 245 pf_nvuint_64_array(nvl, "pcounters", 2 * 2 * 3, 246 (uint64_t *)status->pcounters, NULL); 247 pf_nvuint_64_array(nvl, "bcounters", 2 * 2, 248 (uint64_t *)status->bcounters, NULL); 249 250 nvlist_destroy(nvl); 251 252 return (status); 253 } 254 255 static uint64_t 256 _pfctl_status_counter(struct pfctl_status_counters *counters, uint64_t id) 257 { 258 struct pfctl_status_counter *c; 259 260 TAILQ_FOREACH(c, counters, entry) { 261 if (c->id == id) 262 return (c->counter); 263 } 264 265 return (0); 266 } 267 268 uint64_t 269 pfctl_status_counter(struct pfctl_status *status, int id) 270 { 271 return (_pfctl_status_counter(&status->counters, id)); 272 } 273 274 uint64_t 275 pfctl_status_lcounter(struct pfctl_status *status, int id) 276 { 277 return (_pfctl_status_counter(&status->lcounters, id)); 278 } 279 280 uint64_t 281 pfctl_status_fcounter(struct pfctl_status *status, int id) 282 { 283 return (_pfctl_status_counter(&status->fcounters, id)); 284 } 285 286 uint64_t 287 pfctl_status_scounter(struct pfctl_status *status, int id) 288 { 289 return (_pfctl_status_counter(&status->scounters, id)); 290 } 291 292 void 293 pfctl_free_status(struct pfctl_status *status) 294 { 295 struct pfctl_status_counter *c, *tmp; 296 297 if (status == NULL) 298 return; 299 300 TAILQ_FOREACH_SAFE(c, &status->counters, entry, tmp) { 301 free(c->name); 302 free(c); 303 } 304 TAILQ_FOREACH_SAFE(c, &status->lcounters, entry, tmp) { 305 free(c->name); 306 free(c); 307 } 308 TAILQ_FOREACH_SAFE(c, &status->fcounters, entry, tmp) { 309 free(c->name); 310 free(c); 311 } 312 TAILQ_FOREACH_SAFE(c, &status->scounters, entry, tmp) { 313 free(c->name); 314 free(c); 315 } 316 317 free(status); 318 } 319 320 static void 321 pfctl_nv_add_addr(nvlist_t *nvparent, const char *name, 322 const struct pf_addr *addr) 323 { 324 nvlist_t *nvl = nvlist_create(0); 325 326 nvlist_add_binary(nvl, "addr", addr, sizeof(*addr)); 327 328 nvlist_add_nvlist(nvparent, name, nvl); 329 nvlist_destroy(nvl); 330 } 331 332 static void 333 pf_nvaddr_to_addr(const nvlist_t *nvl, struct pf_addr *addr) 334 { 335 size_t len; 336 const void *data; 337 338 data = nvlist_get_binary(nvl, "addr", &len); 339 assert(len == sizeof(struct pf_addr)); 340 memcpy(addr, data, len); 341 } 342 343 static void 344 pfctl_nv_add_addr_wrap(nvlist_t *nvparent, const char *name, 345 const struct pf_addr_wrap *addr) 346 { 347 nvlist_t *nvl = nvlist_create(0); 348 349 nvlist_add_number(nvl, "type", addr->type); 350 nvlist_add_number(nvl, "iflags", addr->iflags); 351 if (addr->type == PF_ADDR_DYNIFTL) 352 nvlist_add_string(nvl, "ifname", addr->v.ifname); 353 if (addr->type == PF_ADDR_TABLE) 354 nvlist_add_string(nvl, "tblname", addr->v.tblname); 355 pfctl_nv_add_addr(nvl, "addr", &addr->v.a.addr); 356 pfctl_nv_add_addr(nvl, "mask", &addr->v.a.mask); 357 358 nvlist_add_nvlist(nvparent, name, nvl); 359 nvlist_destroy(nvl); 360 } 361 362 static void 363 pf_nvaddr_wrap_to_addr_wrap(const nvlist_t *nvl, struct pf_addr_wrap *addr) 364 { 365 bzero(addr, sizeof(*addr)); 366 367 addr->type = nvlist_get_number(nvl, "type"); 368 addr->iflags = nvlist_get_number(nvl, "iflags"); 369 if (addr->type == PF_ADDR_DYNIFTL) { 370 strlcpy(addr->v.ifname, nvlist_get_string(nvl, "ifname"), 371 IFNAMSIZ); 372 addr->p.dyncnt = nvlist_get_number(nvl, "dyncnt"); 373 } 374 if (addr->type == PF_ADDR_TABLE) { 375 strlcpy(addr->v.tblname, nvlist_get_string(nvl, "tblname"), 376 PF_TABLE_NAME_SIZE); 377 addr->p.tblcnt = nvlist_get_number(nvl, "tblcnt"); 378 } 379 380 pf_nvaddr_to_addr(nvlist_get_nvlist(nvl, "addr"), &addr->v.a.addr); 381 pf_nvaddr_to_addr(nvlist_get_nvlist(nvl, "mask"), &addr->v.a.mask); 382 } 383 384 static void 385 pfctl_nv_add_rule_addr(nvlist_t *nvparent, const char *name, 386 const struct pf_rule_addr *addr) 387 { 388 uint64_t ports[2]; 389 nvlist_t *nvl = nvlist_create(0); 390 391 pfctl_nv_add_addr_wrap(nvl, "addr", &addr->addr); 392 ports[0] = addr->port[0]; 393 ports[1] = addr->port[1]; 394 nvlist_add_number_array(nvl, "port", ports, 2); 395 nvlist_add_number(nvl, "neg", addr->neg); 396 nvlist_add_number(nvl, "port_op", addr->port_op); 397 398 nvlist_add_nvlist(nvparent, name, nvl); 399 nvlist_destroy(nvl); 400 } 401 402 static void 403 pf_nvrule_addr_to_rule_addr(const nvlist_t *nvl, struct pf_rule_addr *addr) 404 { 405 pf_nvaddr_wrap_to_addr_wrap(nvlist_get_nvlist(nvl, "addr"), &addr->addr); 406 407 pf_nvuint_16_array(nvl, "port", 2, addr->port, NULL); 408 addr->neg = nvlist_get_number(nvl, "neg"); 409 addr->port_op = nvlist_get_number(nvl, "port_op"); 410 } 411 412 static void 413 pfctl_nv_add_mape(nvlist_t *nvparent, const char *name, 414 const struct pf_mape_portset *mape) 415 { 416 nvlist_t *nvl = nvlist_create(0); 417 418 nvlist_add_number(nvl, "offset", mape->offset); 419 nvlist_add_number(nvl, "psidlen", mape->psidlen); 420 nvlist_add_number(nvl, "psid", mape->psid); 421 nvlist_add_nvlist(nvparent, name, nvl); 422 nvlist_destroy(nvl); 423 } 424 425 static void 426 pfctl_nv_add_pool(nvlist_t *nvparent, const char *name, 427 const struct pfctl_pool *pool) 428 { 429 uint64_t ports[2]; 430 nvlist_t *nvl = nvlist_create(0); 431 432 nvlist_add_binary(nvl, "key", &pool->key, sizeof(pool->key)); 433 pfctl_nv_add_addr(nvl, "counter", &pool->counter); 434 nvlist_add_number(nvl, "tblidx", pool->tblidx); 435 436 ports[0] = pool->proxy_port[0]; 437 ports[1] = pool->proxy_port[1]; 438 nvlist_add_number_array(nvl, "proxy_port", ports, 2); 439 nvlist_add_number(nvl, "opts", pool->opts); 440 pfctl_nv_add_mape(nvl, "mape", &pool->mape); 441 442 nvlist_add_nvlist(nvparent, name, nvl); 443 nvlist_destroy(nvl); 444 } 445 446 static void 447 pf_nvmape_to_mape(const nvlist_t *nvl, struct pf_mape_portset *mape) 448 { 449 mape->offset = nvlist_get_number(nvl, "offset"); 450 mape->psidlen = nvlist_get_number(nvl, "psidlen"); 451 mape->psid = nvlist_get_number(nvl, "psid"); 452 } 453 454 static void 455 pf_nvpool_to_pool(const nvlist_t *nvl, struct pfctl_pool *pool) 456 { 457 size_t len; 458 const void *data; 459 460 data = nvlist_get_binary(nvl, "key", &len); 461 assert(len == sizeof(pool->key)); 462 memcpy(&pool->key, data, len); 463 464 pf_nvaddr_to_addr(nvlist_get_nvlist(nvl, "counter"), &pool->counter); 465 466 pool->tblidx = nvlist_get_number(nvl, "tblidx"); 467 pf_nvuint_16_array(nvl, "proxy_port", 2, pool->proxy_port, NULL); 468 pool->opts = nvlist_get_number(nvl, "opts"); 469 470 if (nvlist_exists_nvlist(nvl, "mape")) 471 pf_nvmape_to_mape(nvlist_get_nvlist(nvl, "mape"), &pool->mape); 472 } 473 474 static void 475 pfctl_nv_add_uid(nvlist_t *nvparent, const char *name, 476 const struct pf_rule_uid *uid) 477 { 478 uint64_t uids[2]; 479 nvlist_t *nvl = nvlist_create(0); 480 481 uids[0] = uid->uid[0]; 482 uids[1] = uid->uid[1]; 483 nvlist_add_number_array(nvl, "uid", uids, 2); 484 nvlist_add_number(nvl, "op", uid->op); 485 486 nvlist_add_nvlist(nvparent, name, nvl); 487 nvlist_destroy(nvl); 488 } 489 490 static void 491 pf_nvrule_uid_to_rule_uid(const nvlist_t *nvl, struct pf_rule_uid *uid) 492 { 493 pf_nvuint_32_array(nvl, "uid", 2, uid->uid, NULL); 494 uid->op = nvlist_get_number(nvl, "op"); 495 } 496 497 static void 498 pfctl_nv_add_divert(nvlist_t *nvparent, const char *name, 499 const struct pfctl_rule *r) 500 { 501 nvlist_t *nvl = nvlist_create(0); 502 503 pfctl_nv_add_addr(nvl, "addr", &r->divert.addr); 504 nvlist_add_number(nvl, "port", r->divert.port); 505 506 nvlist_add_nvlist(nvparent, name, nvl); 507 nvlist_destroy(nvl); 508 } 509 510 static void 511 pf_nvdivert_to_divert(const nvlist_t *nvl, struct pfctl_rule *rule) 512 { 513 pf_nvaddr_to_addr(nvlist_get_nvlist(nvl, "addr"), &rule->divert.addr); 514 rule->divert.port = nvlist_get_number(nvl, "port"); 515 } 516 517 static void 518 pf_nvrule_to_rule(const nvlist_t *nvl, struct pfctl_rule *rule) 519 { 520 const uint64_t *skip; 521 const char *const *labels; 522 size_t skipcount, labelcount; 523 524 rule->nr = nvlist_get_number(nvl, "nr"); 525 526 pf_nvrule_addr_to_rule_addr(nvlist_get_nvlist(nvl, "src"), &rule->src); 527 pf_nvrule_addr_to_rule_addr(nvlist_get_nvlist(nvl, "dst"), &rule->dst); 528 529 skip = nvlist_get_number_array(nvl, "skip", &skipcount); 530 assert(skip); 531 assert(skipcount == PF_SKIP_COUNT); 532 for (int i = 0; i < PF_SKIP_COUNT; i++) 533 rule->skip[i].nr = skip[i]; 534 535 labels = nvlist_get_string_array(nvl, "labels", &labelcount); 536 assert(labelcount <= PF_RULE_MAX_LABEL_COUNT); 537 for (size_t i = 0; i < labelcount; i++) 538 strlcpy(rule->label[i], labels[i], PF_RULE_LABEL_SIZE); 539 rule->ridentifier = nvlist_get_number(nvl, "ridentifier"); 540 strlcpy(rule->ifname, nvlist_get_string(nvl, "ifname"), IFNAMSIZ); 541 strlcpy(rule->qname, nvlist_get_string(nvl, "qname"), PF_QNAME_SIZE); 542 strlcpy(rule->pqname, nvlist_get_string(nvl, "pqname"), PF_QNAME_SIZE); 543 strlcpy(rule->tagname, nvlist_get_string(nvl, "tagname"), 544 PF_TAG_NAME_SIZE); 545 strlcpy(rule->match_tagname, nvlist_get_string(nvl, "match_tagname"), 546 PF_TAG_NAME_SIZE); 547 548 strlcpy(rule->overload_tblname, nvlist_get_string(nvl, "overload_tblname"), 549 PF_TABLE_NAME_SIZE); 550 551 pf_nvpool_to_pool(nvlist_get_nvlist(nvl, "rpool"), &rule->rpool); 552 553 rule->evaluations = nvlist_get_number(nvl, "evaluations"); 554 pf_nvuint_64_array(nvl, "packets", 2, rule->packets, NULL); 555 pf_nvuint_64_array(nvl, "bytes", 2, rule->bytes, NULL); 556 557 if (nvlist_exists_number(nvl, "timestamp")) { 558 rule->last_active_timestamp = nvlist_get_number(nvl, "timestamp"); 559 } 560 561 rule->os_fingerprint = nvlist_get_number(nvl, "os_fingerprint"); 562 563 rule->rtableid = nvlist_get_number(nvl, "rtableid"); 564 pf_nvuint_32_array(nvl, "timeout", PFTM_MAX, rule->timeout, NULL); 565 rule->max_states = nvlist_get_number(nvl, "max_states"); 566 rule->max_src_nodes = nvlist_get_number(nvl, "max_src_nodes"); 567 rule->max_src_states = nvlist_get_number(nvl, "max_src_states"); 568 rule->max_src_conn = nvlist_get_number(nvl, "max_src_conn"); 569 rule->max_src_conn_rate.limit = 570 nvlist_get_number(nvl, "max_src_conn_rate.limit"); 571 rule->max_src_conn_rate.seconds = 572 nvlist_get_number(nvl, "max_src_conn_rate.seconds"); 573 rule->qid = nvlist_get_number(nvl, "qid"); 574 rule->pqid = nvlist_get_number(nvl, "pqid"); 575 rule->dnpipe = nvlist_get_number(nvl, "dnpipe"); 576 rule->dnrpipe = nvlist_get_number(nvl, "dnrpipe"); 577 rule->free_flags = nvlist_get_number(nvl, "dnflags"); 578 rule->prob = nvlist_get_number(nvl, "prob"); 579 rule->cuid = nvlist_get_number(nvl, "cuid"); 580 rule->cpid = nvlist_get_number(nvl, "cpid"); 581 582 rule->return_icmp = nvlist_get_number(nvl, "return_icmp"); 583 rule->return_icmp6 = nvlist_get_number(nvl, "return_icmp6"); 584 rule->max_mss = nvlist_get_number(nvl, "max_mss"); 585 rule->scrub_flags = nvlist_get_number(nvl, "scrub_flags"); 586 587 pf_nvrule_uid_to_rule_uid(nvlist_get_nvlist(nvl, "uid"), &rule->uid); 588 pf_nvrule_uid_to_rule_uid(nvlist_get_nvlist(nvl, "gid"), 589 (struct pf_rule_uid *)&rule->gid); 590 591 rule->rule_flag = nvlist_get_number(nvl, "rule_flag"); 592 rule->action = nvlist_get_number(nvl, "action"); 593 rule->direction = nvlist_get_number(nvl, "direction"); 594 rule->log = nvlist_get_number(nvl, "log"); 595 rule->logif = nvlist_get_number(nvl, "logif"); 596 rule->quick = nvlist_get_number(nvl, "quick"); 597 rule->ifnot = nvlist_get_number(nvl, "ifnot"); 598 rule->match_tag_not = nvlist_get_number(nvl, "match_tag_not"); 599 rule->natpass = nvlist_get_number(nvl, "natpass"); 600 601 rule->keep_state = nvlist_get_number(nvl, "keep_state"); 602 rule->af = nvlist_get_number(nvl, "af"); 603 rule->proto = nvlist_get_number(nvl, "proto"); 604 rule->type = nvlist_get_number(nvl, "type"); 605 rule->code = nvlist_get_number(nvl, "code"); 606 rule->flags = nvlist_get_number(nvl, "flags"); 607 rule->flagset = nvlist_get_number(nvl, "flagset"); 608 rule->min_ttl = nvlist_get_number(nvl, "min_ttl"); 609 rule->allow_opts = nvlist_get_number(nvl, "allow_opts"); 610 rule->rt = nvlist_get_number(nvl, "rt"); 611 rule->return_ttl = nvlist_get_number(nvl, "return_ttl"); 612 rule->tos = nvlist_get_number(nvl, "tos"); 613 rule->set_tos = nvlist_get_number(nvl, "set_tos"); 614 rule->anchor_relative = nvlist_get_number(nvl, "anchor_relative"); 615 rule->anchor_wildcard = nvlist_get_number(nvl, "anchor_wildcard"); 616 617 rule->flush = nvlist_get_number(nvl, "flush"); 618 rule->prio = nvlist_get_number(nvl, "prio"); 619 pf_nvuint_8_array(nvl, "set_prio", 2, rule->set_prio, NULL); 620 621 pf_nvdivert_to_divert(nvlist_get_nvlist(nvl, "divert"), rule); 622 623 rule->states_cur = nvlist_get_number(nvl, "states_cur"); 624 rule->states_tot = nvlist_get_number(nvl, "states_tot"); 625 rule->src_nodes = nvlist_get_number(nvl, "src_nodes"); 626 } 627 628 static void 629 pfctl_nveth_addr_to_eth_addr(const nvlist_t *nvl, struct pfctl_eth_addr *addr) 630 { 631 static const u_int8_t EMPTY_MAC[ETHER_ADDR_LEN] = { 0 }; 632 size_t len; 633 const void *data; 634 635 data = nvlist_get_binary(nvl, "addr", &len); 636 assert(len == sizeof(addr->addr)); 637 memcpy(addr->addr, data, sizeof(addr->addr)); 638 639 data = nvlist_get_binary(nvl, "mask", &len); 640 assert(len == sizeof(addr->mask)); 641 memcpy(addr->mask, data, sizeof(addr->mask)); 642 643 addr->neg = nvlist_get_bool(nvl, "neg"); 644 645 /* To make checks for 'is this address set?' easier. */ 646 addr->isset = memcmp(addr->addr, EMPTY_MAC, ETHER_ADDR_LEN) != 0; 647 } 648 649 static nvlist_t * 650 pfctl_eth_addr_to_nveth_addr(const struct pfctl_eth_addr *addr) 651 { 652 nvlist_t *nvl; 653 654 nvl = nvlist_create(0); 655 if (nvl == NULL) 656 return (NULL); 657 658 nvlist_add_bool(nvl, "neg", addr->neg); 659 nvlist_add_binary(nvl, "addr", &addr->addr, ETHER_ADDR_LEN); 660 nvlist_add_binary(nvl, "mask", &addr->mask, ETHER_ADDR_LEN); 661 662 return (nvl); 663 } 664 665 static void 666 pfctl_nveth_rule_to_eth_rule(const nvlist_t *nvl, struct pfctl_eth_rule *rule) 667 { 668 const char *const *labels; 669 size_t labelcount, i; 670 671 rule->nr = nvlist_get_number(nvl, "nr"); 672 rule->quick = nvlist_get_bool(nvl, "quick"); 673 strlcpy(rule->ifname, nvlist_get_string(nvl, "ifname"), IFNAMSIZ); 674 rule->ifnot = nvlist_get_bool(nvl, "ifnot"); 675 rule->direction = nvlist_get_number(nvl, "direction"); 676 rule->proto = nvlist_get_number(nvl, "proto"); 677 strlcpy(rule->match_tagname, nvlist_get_string(nvl, "match_tagname"), 678 PF_TAG_NAME_SIZE); 679 rule->match_tag = nvlist_get_number(nvl, "match_tag"); 680 rule->match_tag_not = nvlist_get_bool(nvl, "match_tag_not"); 681 682 labels = nvlist_get_string_array(nvl, "labels", &labelcount); 683 assert(labelcount <= PF_RULE_MAX_LABEL_COUNT); 684 for (i = 0; i < labelcount; i++) 685 strlcpy(rule->label[i], labels[i], PF_RULE_LABEL_SIZE); 686 rule->ridentifier = nvlist_get_number(nvl, "ridentifier"); 687 688 pfctl_nveth_addr_to_eth_addr(nvlist_get_nvlist(nvl, "src"), 689 &rule->src); 690 pfctl_nveth_addr_to_eth_addr(nvlist_get_nvlist(nvl, "dst"), 691 &rule->dst); 692 693 pf_nvrule_addr_to_rule_addr(nvlist_get_nvlist(nvl, "ipsrc"), 694 &rule->ipsrc); 695 pf_nvrule_addr_to_rule_addr(nvlist_get_nvlist(nvl, "ipdst"), 696 &rule->ipdst); 697 698 rule->evaluations = nvlist_get_number(nvl, "evaluations"); 699 rule->packets[0] = nvlist_get_number(nvl, "packets-in"); 700 rule->packets[1] = nvlist_get_number(nvl, "packets-out"); 701 rule->bytes[0] = nvlist_get_number(nvl, "bytes-in"); 702 rule->bytes[1] = nvlist_get_number(nvl, "bytes-out"); 703 704 if (nvlist_exists_number(nvl, "timestamp")) { 705 rule->last_active_timestamp = nvlist_get_number(nvl, "timestamp"); 706 } 707 708 strlcpy(rule->qname, nvlist_get_string(nvl, "qname"), PF_QNAME_SIZE); 709 strlcpy(rule->tagname, nvlist_get_string(nvl, "tagname"), 710 PF_TAG_NAME_SIZE); 711 712 rule->dnpipe = nvlist_get_number(nvl, "dnpipe"); 713 rule->dnflags = nvlist_get_number(nvl, "dnflags"); 714 715 rule->anchor_relative = nvlist_get_number(nvl, "anchor_relative"); 716 rule->anchor_wildcard = nvlist_get_number(nvl, "anchor_wildcard"); 717 718 strlcpy(rule->bridge_to, nvlist_get_string(nvl, "bridge_to"), 719 IFNAMSIZ); 720 721 rule->action = nvlist_get_number(nvl, "action"); 722 } 723 724 int 725 pfctl_get_eth_rulesets_info(int dev, struct pfctl_eth_rulesets_info *ri, 726 const char *path) 727 { 728 nvlist_t *nvl; 729 int ret; 730 731 bzero(ri, sizeof(*ri)); 732 733 nvl = nvlist_create(0); 734 nvlist_add_string(nvl, "path", path); 735 736 if ((ret = pfctl_do_ioctl(dev, DIOCGETETHRULESETS, 256, &nvl)) != 0) 737 return (ret); 738 739 ri->nr = nvlist_get_number(nvl, "nr"); 740 741 nvlist_destroy(nvl); 742 return (0); 743 } 744 745 int 746 pfctl_get_eth_ruleset(int dev, const char *path, int nr, 747 struct pfctl_eth_ruleset_info *ri) 748 { 749 nvlist_t *nvl; 750 int ret; 751 752 bzero(ri, sizeof(*ri)); 753 754 nvl = nvlist_create(0); 755 nvlist_add_string(nvl, "path", path); 756 nvlist_add_number(nvl, "nr", nr); 757 758 if ((ret = pfctl_do_ioctl(dev, DIOCGETETHRULESET, 1024, &nvl)) != 0) 759 return (ret); 760 761 ri->nr = nvlist_get_number(nvl, "nr"); 762 strlcpy(ri->path, nvlist_get_string(nvl, "path"), MAXPATHLEN); 763 strlcpy(ri->name, nvlist_get_string(nvl, "name"), 764 PF_ANCHOR_NAME_SIZE); 765 766 nvlist_destroy(nvl); 767 768 return (0); 769 } 770 771 int 772 pfctl_get_eth_rules_info(int dev, struct pfctl_eth_rules_info *rules, 773 const char *path) 774 { 775 nvlist_t *nvl; 776 int ret; 777 778 bzero(rules, sizeof(*rules)); 779 780 nvl = nvlist_create(0); 781 nvlist_add_string(nvl, "anchor", path); 782 783 if ((ret = pfctl_do_ioctl(dev, DIOCGETETHRULES, 1024, &nvl)) != 0) 784 return (ret); 785 786 rules->nr = nvlist_get_number(nvl, "nr"); 787 rules->ticket = nvlist_get_number(nvl, "ticket"); 788 789 nvlist_destroy(nvl); 790 return (0); 791 } 792 793 int 794 pfctl_get_eth_rule(int dev, uint32_t nr, uint32_t ticket, 795 const char *path, struct pfctl_eth_rule *rule, bool clear, 796 char *anchor_call) 797 { 798 nvlist_t *nvl; 799 int ret; 800 801 nvl = nvlist_create(0); 802 803 nvlist_add_string(nvl, "anchor", path); 804 nvlist_add_number(nvl, "ticket", ticket); 805 nvlist_add_number(nvl, "nr", nr); 806 nvlist_add_bool(nvl, "clear", clear); 807 808 if ((ret = pfctl_do_ioctl(dev, DIOCGETETHRULE, 4096, &nvl)) != 0) 809 return (ret); 810 811 pfctl_nveth_rule_to_eth_rule(nvl, rule); 812 813 if (anchor_call) 814 strlcpy(anchor_call, nvlist_get_string(nvl, "anchor_call"), 815 MAXPATHLEN); 816 817 nvlist_destroy(nvl); 818 return (0); 819 } 820 821 int 822 pfctl_add_eth_rule(int dev, const struct pfctl_eth_rule *r, const char *anchor, 823 const char *anchor_call, uint32_t ticket) 824 { 825 struct pfioc_nv nv; 826 nvlist_t *nvl, *addr; 827 void *packed; 828 int error = 0; 829 size_t labelcount, size; 830 831 nvl = nvlist_create(0); 832 833 nvlist_add_number(nvl, "ticket", ticket); 834 nvlist_add_string(nvl, "anchor", anchor); 835 nvlist_add_string(nvl, "anchor_call", anchor_call); 836 837 nvlist_add_number(nvl, "nr", r->nr); 838 nvlist_add_bool(nvl, "quick", r->quick); 839 nvlist_add_string(nvl, "ifname", r->ifname); 840 nvlist_add_bool(nvl, "ifnot", r->ifnot); 841 nvlist_add_number(nvl, "direction", r->direction); 842 nvlist_add_number(nvl, "proto", r->proto); 843 nvlist_add_string(nvl, "match_tagname", r->match_tagname); 844 nvlist_add_bool(nvl, "match_tag_not", r->match_tag_not); 845 846 addr = pfctl_eth_addr_to_nveth_addr(&r->src); 847 if (addr == NULL) { 848 nvlist_destroy(nvl); 849 return (ENOMEM); 850 } 851 nvlist_add_nvlist(nvl, "src", addr); 852 nvlist_destroy(addr); 853 854 addr = pfctl_eth_addr_to_nveth_addr(&r->dst); 855 if (addr == NULL) { 856 nvlist_destroy(nvl); 857 return (ENOMEM); 858 } 859 nvlist_add_nvlist(nvl, "dst", addr); 860 nvlist_destroy(addr); 861 862 pfctl_nv_add_rule_addr(nvl, "ipsrc", &r->ipsrc); 863 pfctl_nv_add_rule_addr(nvl, "ipdst", &r->ipdst); 864 865 labelcount = 0; 866 while (labelcount < PF_RULE_MAX_LABEL_COUNT && 867 r->label[labelcount][0] != 0) { 868 nvlist_append_string_array(nvl, "labels", 869 r->label[labelcount]); 870 labelcount++; 871 } 872 nvlist_add_number(nvl, "ridentifier", r->ridentifier); 873 874 nvlist_add_string(nvl, "qname", r->qname); 875 nvlist_add_string(nvl, "tagname", r->tagname); 876 nvlist_add_number(nvl, "dnpipe", r->dnpipe); 877 nvlist_add_number(nvl, "dnflags", r->dnflags); 878 879 nvlist_add_string(nvl, "bridge_to", r->bridge_to); 880 881 nvlist_add_number(nvl, "action", r->action); 882 883 packed = nvlist_pack(nvl, &size); 884 if (packed == NULL) { 885 nvlist_destroy(nvl); 886 return (ENOMEM); 887 } 888 889 nv.len = size; 890 nv.size = size; 891 nv.data = packed; 892 893 if (ioctl(dev, DIOCADDETHRULE, &nv) != 0) 894 error = errno; 895 896 free(packed); 897 nvlist_destroy(nvl); 898 899 return (error); 900 } 901 902 int 903 pfctl_add_rule(int dev, const struct pfctl_rule *r, const char *anchor, 904 const char *anchor_call, uint32_t ticket, uint32_t pool_ticket) 905 { 906 struct pfioc_nv nv; 907 uint64_t timeouts[PFTM_MAX]; 908 uint64_t set_prio[2]; 909 nvlist_t *nvl, *nvlr; 910 size_t labelcount; 911 int ret; 912 913 nvl = nvlist_create(0); 914 nvlr = nvlist_create(0); 915 916 nvlist_add_number(nvl, "ticket", ticket); 917 nvlist_add_number(nvl, "pool_ticket", pool_ticket); 918 nvlist_add_string(nvl, "anchor", anchor); 919 nvlist_add_string(nvl, "anchor_call", anchor_call); 920 921 nvlist_add_number(nvlr, "nr", r->nr); 922 pfctl_nv_add_rule_addr(nvlr, "src", &r->src); 923 pfctl_nv_add_rule_addr(nvlr, "dst", &r->dst); 924 925 labelcount = 0; 926 while (r->label[labelcount][0] != 0 && 927 labelcount < PF_RULE_MAX_LABEL_COUNT) { 928 nvlist_append_string_array(nvlr, "labels", 929 r->label[labelcount]); 930 labelcount++; 931 } 932 nvlist_add_number(nvlr, "ridentifier", r->ridentifier); 933 934 nvlist_add_string(nvlr, "ifname", r->ifname); 935 nvlist_add_string(nvlr, "qname", r->qname); 936 nvlist_add_string(nvlr, "pqname", r->pqname); 937 nvlist_add_string(nvlr, "tagname", r->tagname); 938 nvlist_add_string(nvlr, "match_tagname", r->match_tagname); 939 nvlist_add_string(nvlr, "overload_tblname", r->overload_tblname); 940 941 pfctl_nv_add_pool(nvlr, "rpool", &r->rpool); 942 943 nvlist_add_number(nvlr, "os_fingerprint", r->os_fingerprint); 944 945 nvlist_add_number(nvlr, "rtableid", r->rtableid); 946 for (int i = 0; i < PFTM_MAX; i++) 947 timeouts[i] = r->timeout[i]; 948 nvlist_add_number_array(nvlr, "timeout", timeouts, PFTM_MAX); 949 nvlist_add_number(nvlr, "max_states", r->max_states); 950 nvlist_add_number(nvlr, "max_src_nodes", r->max_src_nodes); 951 nvlist_add_number(nvlr, "max_src_states", r->max_src_states); 952 nvlist_add_number(nvlr, "max_src_conn", r->max_src_conn); 953 nvlist_add_number(nvlr, "max_src_conn_rate.limit", 954 r->max_src_conn_rate.limit); 955 nvlist_add_number(nvlr, "max_src_conn_rate.seconds", 956 r->max_src_conn_rate.seconds); 957 nvlist_add_number(nvlr, "dnpipe", r->dnpipe); 958 nvlist_add_number(nvlr, "dnrpipe", r->dnrpipe); 959 nvlist_add_number(nvlr, "dnflags", r->free_flags); 960 nvlist_add_number(nvlr, "prob", r->prob); 961 nvlist_add_number(nvlr, "cuid", r->cuid); 962 nvlist_add_number(nvlr, "cpid", r->cpid); 963 964 nvlist_add_number(nvlr, "return_icmp", r->return_icmp); 965 nvlist_add_number(nvlr, "return_icmp6", r->return_icmp6); 966 967 nvlist_add_number(nvlr, "max_mss", r->max_mss); 968 nvlist_add_number(nvlr, "scrub_flags", r->scrub_flags); 969 970 pfctl_nv_add_uid(nvlr, "uid", &r->uid); 971 pfctl_nv_add_uid(nvlr, "gid", (const struct pf_rule_uid *)&r->gid); 972 973 nvlist_add_number(nvlr, "rule_flag", r->rule_flag); 974 nvlist_add_number(nvlr, "action", r->action); 975 nvlist_add_number(nvlr, "direction", r->direction); 976 nvlist_add_number(nvlr, "log", r->log); 977 nvlist_add_number(nvlr, "logif", r->logif); 978 nvlist_add_number(nvlr, "quick", r->quick); 979 nvlist_add_number(nvlr, "ifnot", r->ifnot); 980 nvlist_add_number(nvlr, "match_tag_not", r->match_tag_not); 981 nvlist_add_number(nvlr, "natpass", r->natpass); 982 983 nvlist_add_number(nvlr, "keep_state", r->keep_state); 984 nvlist_add_number(nvlr, "af", r->af); 985 nvlist_add_number(nvlr, "proto", r->proto); 986 nvlist_add_number(nvlr, "type", r->type); 987 nvlist_add_number(nvlr, "code", r->code); 988 nvlist_add_number(nvlr, "flags", r->flags); 989 nvlist_add_number(nvlr, "flagset", r->flagset); 990 nvlist_add_number(nvlr, "min_ttl", r->min_ttl); 991 nvlist_add_number(nvlr, "allow_opts", r->allow_opts); 992 nvlist_add_number(nvlr, "rt", r->rt); 993 nvlist_add_number(nvlr, "return_ttl", r->return_ttl); 994 nvlist_add_number(nvlr, "tos", r->tos); 995 nvlist_add_number(nvlr, "set_tos", r->set_tos); 996 nvlist_add_number(nvlr, "anchor_relative", r->anchor_relative); 997 nvlist_add_number(nvlr, "anchor_wildcard", r->anchor_wildcard); 998 999 nvlist_add_number(nvlr, "flush", r->flush); 1000 1001 nvlist_add_number(nvlr, "prio", r->prio); 1002 set_prio[0] = r->set_prio[0]; 1003 set_prio[1] = r->set_prio[1]; 1004 nvlist_add_number_array(nvlr, "set_prio", set_prio, 2); 1005 1006 pfctl_nv_add_divert(nvlr, "divert", r); 1007 1008 nvlist_add_nvlist(nvl, "rule", nvlr); 1009 nvlist_destroy(nvlr); 1010 1011 /* Now do the call. */ 1012 nv.data = nvlist_pack(nvl, &nv.len); 1013 nv.size = nv.len; 1014 1015 ret = ioctl(dev, DIOCADDRULENV, &nv); 1016 if (ret == -1) 1017 ret = errno; 1018 1019 free(nv.data); 1020 nvlist_destroy(nvl); 1021 1022 return (ret); 1023 } 1024 1025 int 1026 pfctl_get_rules_info(int dev, struct pfctl_rules_info *rules, uint32_t ruleset, 1027 const char *path) 1028 { 1029 struct pfioc_rule pr; 1030 int ret; 1031 1032 bzero(&pr, sizeof(pr)); 1033 if (strlcpy(pr.anchor, path, sizeof(pr.anchor)) >= sizeof(pr.anchor)) 1034 return (E2BIG); 1035 1036 pr.rule.action = ruleset; 1037 ret = ioctl(dev, DIOCGETRULES, &pr); 1038 if (ret != 0) 1039 return (ret); 1040 1041 rules->nr = pr.nr; 1042 rules->ticket = pr.ticket; 1043 1044 return (0); 1045 } 1046 1047 int 1048 pfctl_get_rule(int dev, uint32_t nr, uint32_t ticket, const char *anchor, 1049 uint32_t ruleset, struct pfctl_rule *rule, char *anchor_call) 1050 { 1051 return (pfctl_get_clear_rule(dev, nr, ticket, anchor, ruleset, rule, 1052 anchor_call, false)); 1053 } 1054 1055 int pfctl_get_clear_rule(int dev, uint32_t nr, uint32_t ticket, 1056 const char *anchor, uint32_t ruleset, struct pfctl_rule *rule, 1057 char *anchor_call, bool clear) 1058 { 1059 nvlist_t *nvl; 1060 int ret; 1061 1062 nvl = nvlist_create(0); 1063 if (nvl == 0) 1064 return (ENOMEM); 1065 1066 nvlist_add_number(nvl, "nr", nr); 1067 nvlist_add_number(nvl, "ticket", ticket); 1068 nvlist_add_string(nvl, "anchor", anchor); 1069 nvlist_add_number(nvl, "ruleset", ruleset); 1070 1071 if (clear) 1072 nvlist_add_bool(nvl, "clear_counter", true); 1073 1074 if ((ret = pfctl_do_ioctl(dev, DIOCGETRULENV, 8192, &nvl)) != 0) 1075 return (ret); 1076 1077 pf_nvrule_to_rule(nvlist_get_nvlist(nvl, "rule"), rule); 1078 1079 if (anchor_call) 1080 strlcpy(anchor_call, nvlist_get_string(nvl, "anchor_call"), 1081 MAXPATHLEN); 1082 1083 nvlist_destroy(nvl); 1084 1085 return (0); 1086 } 1087 1088 int 1089 pfctl_set_keepcounters(int dev, bool keep) 1090 { 1091 struct pfioc_nv nv; 1092 nvlist_t *nvl; 1093 int ret; 1094 1095 nvl = nvlist_create(0); 1096 1097 nvlist_add_bool(nvl, "keep_counters", keep); 1098 1099 nv.data = nvlist_pack(nvl, &nv.len); 1100 nv.size = nv.len; 1101 1102 nvlist_destroy(nvl); 1103 1104 ret = ioctl(dev, DIOCKEEPCOUNTERS, &nv); 1105 1106 free(nv.data); 1107 return (ret); 1108 } 1109 1110 static void 1111 pfctl_nv_add_state_cmp(nvlist_t *nvl, const char *name, 1112 const struct pfctl_state_cmp *cmp) 1113 { 1114 nvlist_t *nv; 1115 1116 nv = nvlist_create(0); 1117 1118 nvlist_add_number(nv, "id", cmp->id); 1119 nvlist_add_number(nv, "creatorid", htonl(cmp->creatorid)); 1120 nvlist_add_number(nv, "direction", cmp->direction); 1121 1122 nvlist_add_nvlist(nvl, name, nv); 1123 nvlist_destroy(nv); 1124 } 1125 1126 static void 1127 pf_state_key_export_to_state_key(struct pfctl_state_key *ps, 1128 const struct pf_state_key_export *s) 1129 { 1130 bcopy(s->addr, ps->addr, sizeof(ps->addr[0]) * 2); 1131 ps->port[0] = s->port[0]; 1132 ps->port[1] = s->port[1]; 1133 } 1134 1135 static void 1136 pf_state_peer_export_to_state_peer(struct pfctl_state_peer *ps, 1137 const struct pf_state_peer_export *s) 1138 { 1139 /* Ignore scrub. */ 1140 ps->seqlo = s->seqlo; 1141 ps->seqhi = s->seqhi; 1142 ps->seqdiff = s->seqdiff; 1143 /* Ignore max_win & mss */ 1144 ps->state = s->state; 1145 ps->wscale = s->wscale; 1146 } 1147 1148 static void 1149 pf_state_export_to_state(struct pfctl_state *ps, const struct pf_state_export *s) 1150 { 1151 assert(s->version >= PF_STATE_VERSION); 1152 1153 ps->id = s->id; 1154 strlcpy(ps->ifname, s->ifname, sizeof(ps->ifname)); 1155 strlcpy(ps->orig_ifname, s->orig_ifname, sizeof(ps->orig_ifname)); 1156 strlcpy(ps->rt_ifname, s->rt_ifname, sizeof(ps->rt_ifname)); 1157 pf_state_key_export_to_state_key(&ps->key[0], &s->key[0]); 1158 pf_state_key_export_to_state_key(&ps->key[1], &s->key[1]); 1159 pf_state_peer_export_to_state_peer(&ps->src, &s->src); 1160 pf_state_peer_export_to_state_peer(&ps->dst, &s->dst); 1161 bcopy(&s->rt_addr, &ps->rt_addr, sizeof(ps->rt_addr)); 1162 ps->rule = ntohl(s->rule); 1163 ps->anchor = ntohl(s->anchor); 1164 ps->nat_rule = ntohl(s->nat_rule); 1165 ps->creation = ntohl(s->creation); 1166 ps->expire = ntohl(s->expire); 1167 ps->packets[0] = s->packets[0]; 1168 ps->packets[1] = s->packets[1]; 1169 ps->bytes[0] = s->bytes[0]; 1170 ps->bytes[1] = s->bytes[1]; 1171 ps->creatorid = ntohl(s->creatorid); 1172 ps->key[0].proto = s->proto; 1173 ps->key[1].proto = s->proto; 1174 ps->key[0].af = s->af; 1175 ps->key[1].af = s->af; 1176 ps->direction = s->direction; 1177 ps->state_flags = ntohs(s->state_flags); 1178 ps->sync_flags = ntohs(s->sync_flags); 1179 ps->qid = ntohs(s->qid); 1180 ps->pqid = ntohs(s->pqid); 1181 ps->dnpipe = ntohs(s->dnpipe); 1182 ps->dnrpipe = ntohs(s->dnrpipe); 1183 ps->rtableid = ntohl(s->rtableid); 1184 ps->min_ttl = s->min_ttl; 1185 ps->set_tos = s->set_tos; 1186 ps->max_mss = ntohs(s->max_mss); 1187 ps->rt = s->rt; 1188 ps->set_prio[0] = s->set_prio[0]; 1189 ps->set_prio[1] = s->set_prio[1]; 1190 } 1191 1192 int 1193 pfctl_get_states(int dev, struct pfctl_states *states) 1194 { 1195 struct pfioc_states_v2 ps; 1196 struct pf_state_export *p; 1197 char *inbuf = NULL, *newinbuf = NULL; 1198 unsigned int len = 0; 1199 int i, error; 1200 1201 bzero(&ps, sizeof(ps)); 1202 ps.ps_req_version = PF_STATE_VERSION; 1203 1204 bzero(states, sizeof(*states)); 1205 TAILQ_INIT(&states->states); 1206 1207 for (;;) { 1208 ps.ps_len = len; 1209 if (len) { 1210 newinbuf = realloc(inbuf, len); 1211 if (newinbuf == NULL) 1212 return (ENOMEM); 1213 ps.ps_buf = inbuf = newinbuf; 1214 } 1215 if ((error = ioctl(dev, DIOCGETSTATESV2, &ps)) < 0) { 1216 free(inbuf); 1217 return (error); 1218 } 1219 if (ps.ps_len + sizeof(struct pfioc_states_v2) < len) 1220 break; 1221 if (len == 0 && ps.ps_len == 0) 1222 goto out; 1223 if (len == 0 && ps.ps_len != 0) 1224 len = ps.ps_len; 1225 if (ps.ps_len == 0) 1226 goto out; /* no states */ 1227 len *= 2; 1228 } 1229 p = ps.ps_states; 1230 1231 for (i = 0; i < ps.ps_len; i += sizeof(*p), p++) { 1232 struct pfctl_state *s = malloc(sizeof(*s)); 1233 if (s == NULL) { 1234 pfctl_free_states(states); 1235 error = ENOMEM; 1236 goto out; 1237 } 1238 1239 pf_state_export_to_state(s, p); 1240 TAILQ_INSERT_TAIL(&states->states, s, entry); 1241 } 1242 1243 out: 1244 free(inbuf); 1245 return (error); 1246 } 1247 1248 void 1249 pfctl_free_states(struct pfctl_states *states) 1250 { 1251 struct pfctl_state *s, *tmp; 1252 1253 TAILQ_FOREACH_SAFE(s, &states->states, entry, tmp) { 1254 free(s); 1255 } 1256 1257 bzero(states, sizeof(*states)); 1258 } 1259 1260 static int 1261 _pfctl_clear_states(int dev, const struct pfctl_kill *kill, 1262 unsigned int *killed, uint64_t ioctlval) 1263 { 1264 nvlist_t *nvl; 1265 int ret; 1266 1267 nvl = nvlist_create(0); 1268 1269 pfctl_nv_add_state_cmp(nvl, "cmp", &kill->cmp); 1270 nvlist_add_number(nvl, "af", kill->af); 1271 nvlist_add_number(nvl, "proto", kill->proto); 1272 pfctl_nv_add_rule_addr(nvl, "src", &kill->src); 1273 pfctl_nv_add_rule_addr(nvl, "dst", &kill->dst); 1274 pfctl_nv_add_rule_addr(nvl, "rt_addr", &kill->rt_addr); 1275 nvlist_add_string(nvl, "ifname", kill->ifname); 1276 nvlist_add_string(nvl, "label", kill->label); 1277 nvlist_add_bool(nvl, "kill_match", kill->kill_match); 1278 1279 if ((ret = pfctl_do_ioctl(dev, ioctlval, 1024, &nvl)) != 0) 1280 return (ret); 1281 1282 if (killed) 1283 *killed = nvlist_get_number(nvl, "killed"); 1284 1285 nvlist_destroy(nvl); 1286 1287 return (ret); 1288 } 1289 1290 int 1291 pfctl_clear_states(int dev, const struct pfctl_kill *kill, 1292 unsigned int *killed) 1293 { 1294 return (_pfctl_clear_states(dev, kill, killed, DIOCCLRSTATESNV)); 1295 } 1296 1297 int 1298 pfctl_kill_states(int dev, const struct pfctl_kill *kill, unsigned int *killed) 1299 { 1300 return (_pfctl_clear_states(dev, kill, killed, DIOCKILLSTATESNV)); 1301 } 1302 1303 int 1304 pfctl_clear_rules(int dev, const char *anchorname) 1305 { 1306 struct pfioc_trans trans; 1307 struct pfioc_trans_e transe[2]; 1308 int ret; 1309 1310 bzero(&trans, sizeof(trans)); 1311 bzero(&transe, sizeof(transe)); 1312 1313 transe[0].rs_num = PF_RULESET_SCRUB; 1314 if (strlcpy(transe[0].anchor, anchorname, sizeof(transe[0].anchor)) 1315 >= sizeof(transe[0].anchor)) 1316 return (E2BIG); 1317 1318 transe[1].rs_num = PF_RULESET_FILTER; 1319 if (strlcpy(transe[1].anchor, anchorname, sizeof(transe[1].anchor)) 1320 >= sizeof(transe[1].anchor)) 1321 return (E2BIG); 1322 1323 trans.size = 2; 1324 trans.esize = sizeof(transe[0]); 1325 trans.array = transe; 1326 1327 ret = ioctl(dev, DIOCXBEGIN, &trans); 1328 if (ret != 0) 1329 return (ret); 1330 return ioctl(dev, DIOCXCOMMIT, &trans); 1331 } 1332 1333 int 1334 pfctl_clear_nat(int dev, const char *anchorname) 1335 { 1336 struct pfioc_trans trans; 1337 struct pfioc_trans_e transe[3]; 1338 int ret; 1339 1340 bzero(&trans, sizeof(trans)); 1341 bzero(&transe, sizeof(transe)); 1342 1343 transe[0].rs_num = PF_RULESET_NAT; 1344 if (strlcpy(transe[0].anchor, anchorname, sizeof(transe[0].anchor)) 1345 >= sizeof(transe[0].anchor)) 1346 return (E2BIG); 1347 1348 transe[1].rs_num = PF_RULESET_BINAT; 1349 if (strlcpy(transe[1].anchor, anchorname, sizeof(transe[1].anchor)) 1350 >= sizeof(transe[0].anchor)) 1351 return (E2BIG); 1352 1353 transe[2].rs_num = PF_RULESET_RDR; 1354 if (strlcpy(transe[2].anchor, anchorname, sizeof(transe[2].anchor)) 1355 >= sizeof(transe[2].anchor)) 1356 return (E2BIG); 1357 1358 trans.size = 3; 1359 trans.esize = sizeof(transe[0]); 1360 trans.array = transe; 1361 1362 ret = ioctl(dev, DIOCXBEGIN, &trans); 1363 if (ret != 0) 1364 return (ret); 1365 return ioctl(dev, DIOCXCOMMIT, &trans); 1366 } 1367 int 1368 pfctl_clear_eth_rules(int dev, const char *anchorname) 1369 { 1370 struct pfioc_trans trans; 1371 struct pfioc_trans_e transe; 1372 int ret; 1373 1374 bzero(&trans, sizeof(trans)); 1375 bzero(&transe, sizeof(transe)); 1376 1377 transe.rs_num = PF_RULESET_ETH; 1378 if (strlcpy(transe.anchor, anchorname, sizeof(transe.anchor)) 1379 >= sizeof(transe.anchor)) 1380 return (E2BIG); 1381 1382 trans.size = 1; 1383 trans.esize = sizeof(transe); 1384 trans.array = &transe; 1385 1386 ret = ioctl(dev, DIOCXBEGIN, &trans); 1387 if (ret != 0) 1388 return (ret); 1389 return ioctl(dev, DIOCXCOMMIT, &trans); 1390 } 1391 1392 static int 1393 pfctl_get_limit(int dev, const int index, uint *limit) 1394 { 1395 struct pfioc_limit pl; 1396 1397 bzero(&pl, sizeof(pl)); 1398 pl.index = index; 1399 1400 if (ioctl(dev, DIOCGETLIMIT, &pl) == -1) 1401 return (errno); 1402 1403 *limit = pl.limit; 1404 1405 return (0); 1406 } 1407 1408 int 1409 pfctl_set_syncookies(int dev, const struct pfctl_syncookies *s) 1410 { 1411 struct pfioc_nv nv; 1412 nvlist_t *nvl; 1413 int ret; 1414 uint state_limit; 1415 uint64_t lim, hi, lo; 1416 1417 ret = pfctl_get_limit(dev, PF_LIMIT_STATES, &state_limit); 1418 if (ret != 0) 1419 return (ret); 1420 1421 lim = state_limit; 1422 hi = lim * s->highwater / 100; 1423 lo = lim * s->lowwater / 100; 1424 1425 if (lo == hi) 1426 hi++; 1427 1428 nvl = nvlist_create(0); 1429 1430 nvlist_add_bool(nvl, "enabled", s->mode != PFCTL_SYNCOOKIES_NEVER); 1431 nvlist_add_bool(nvl, "adaptive", s->mode == PFCTL_SYNCOOKIES_ADAPTIVE); 1432 nvlist_add_number(nvl, "highwater", hi); 1433 nvlist_add_number(nvl, "lowwater", lo); 1434 1435 nv.data = nvlist_pack(nvl, &nv.len); 1436 nv.size = nv.len; 1437 nvlist_destroy(nvl); 1438 nvl = NULL; 1439 1440 ret = ioctl(dev, DIOCSETSYNCOOKIES, &nv); 1441 1442 free(nv.data); 1443 return (ret); 1444 } 1445 1446 int 1447 pfctl_get_syncookies(int dev, struct pfctl_syncookies *s) 1448 { 1449 nvlist_t *nvl; 1450 int ret; 1451 uint state_limit; 1452 bool enabled, adaptive; 1453 1454 ret = pfctl_get_limit(dev, PF_LIMIT_STATES, &state_limit); 1455 if (ret != 0) 1456 return (ret); 1457 1458 bzero(s, sizeof(*s)); 1459 1460 nvl = nvlist_create(0); 1461 1462 if ((ret = pfctl_do_ioctl(dev, DIOCGETSYNCOOKIES, 256, &nvl)) != 0) 1463 return (errno); 1464 1465 enabled = nvlist_get_bool(nvl, "enabled"); 1466 adaptive = nvlist_get_bool(nvl, "adaptive"); 1467 1468 if (enabled) { 1469 if (adaptive) 1470 s->mode = PFCTL_SYNCOOKIES_ADAPTIVE; 1471 else 1472 s->mode = PFCTL_SYNCOOKIES_ALWAYS; 1473 } else { 1474 s->mode = PFCTL_SYNCOOKIES_NEVER; 1475 } 1476 1477 s->highwater = nvlist_get_number(nvl, "highwater") * 100 / state_limit; 1478 s->lowwater = nvlist_get_number(nvl, "lowwater") * 100 / state_limit; 1479 s->halfopen_states = nvlist_get_number(nvl, "halfopen_states"); 1480 1481 nvlist_destroy(nvl); 1482 1483 return (0); 1484 } 1485 1486 int 1487 pfctl_table_add_addrs(int dev, struct pfr_table *tbl, struct pfr_addr 1488 *addr, int size, int *nadd, int flags) 1489 { 1490 struct pfioc_table io; 1491 1492 if (tbl == NULL || size < 0 || (size && addr == NULL)) { 1493 return (EINVAL); 1494 } 1495 bzero(&io, sizeof io); 1496 io.pfrio_flags = flags; 1497 io.pfrio_table = *tbl; 1498 io.pfrio_buffer = addr; 1499 io.pfrio_esize = sizeof(*addr); 1500 io.pfrio_size = size; 1501 1502 if (ioctl(dev, DIOCRADDADDRS, &io)) 1503 return (errno); 1504 if (nadd != NULL) 1505 *nadd = io.pfrio_nadd; 1506 return (0); 1507 } 1508 1509 int 1510 pfctl_table_del_addrs(int dev, struct pfr_table *tbl, struct pfr_addr 1511 *addr, int size, int *ndel, int flags) 1512 { 1513 struct pfioc_table io; 1514 1515 if (tbl == NULL || size < 0 || (size && addr == NULL)) { 1516 return (EINVAL); 1517 } 1518 bzero(&io, sizeof io); 1519 io.pfrio_flags = flags; 1520 io.pfrio_table = *tbl; 1521 io.pfrio_buffer = addr; 1522 io.pfrio_esize = sizeof(*addr); 1523 io.pfrio_size = size; 1524 1525 if (ioctl(dev, DIOCRDELADDRS, &io)) 1526 return (errno); 1527 if (ndel != NULL) 1528 *ndel = io.pfrio_ndel; 1529 return (0); 1530 } 1531 1532 int 1533 pfctl_table_set_addrs(int dev, struct pfr_table *tbl, struct pfr_addr 1534 *addr, int size, int *size2, int *nadd, int *ndel, int *nchange, int flags) 1535 { 1536 struct pfioc_table io; 1537 1538 if (tbl == NULL || size < 0 || (size && addr == NULL)) { 1539 return (EINVAL); 1540 } 1541 bzero(&io, sizeof io); 1542 io.pfrio_flags = flags; 1543 io.pfrio_table = *tbl; 1544 io.pfrio_buffer = addr; 1545 io.pfrio_esize = sizeof(*addr); 1546 io.pfrio_size = size; 1547 io.pfrio_size2 = (size2 != NULL) ? *size2 : 0; 1548 if (ioctl(dev, DIOCRSETADDRS, &io)) 1549 return (-1); 1550 if (nadd != NULL) 1551 *nadd = io.pfrio_nadd; 1552 if (ndel != NULL) 1553 *ndel = io.pfrio_ndel; 1554 if (nchange != NULL) 1555 *nchange = io.pfrio_nchange; 1556 if (size2 != NULL) 1557 *size2 = io.pfrio_size2; 1558 return (0); 1559 } 1560 1561 int pfctl_table_get_addrs(int dev, struct pfr_table *tbl, struct pfr_addr *addr, 1562 int *size, int flags) 1563 { 1564 struct pfioc_table io; 1565 1566 if (tbl == NULL || size == NULL || *size < 0 || 1567 (*size && addr == NULL)) { 1568 return (EINVAL); 1569 } 1570 bzero(&io, sizeof io); 1571 io.pfrio_flags = flags; 1572 io.pfrio_table = *tbl; 1573 io.pfrio_buffer = addr; 1574 io.pfrio_esize = sizeof(*addr); 1575 io.pfrio_size = *size; 1576 if (ioctl(dev, DIOCRGETADDRS, &io)) 1577 return (-1); 1578 *size = io.pfrio_size; 1579 return (0); 1580 } 1581