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 <netpfil/pf/pf_nl.h> 44 #include <netlink/netlink.h> 45 #include <netlink/netlink_generic.h> 46 #include <netlink/netlink_snl.h> 47 #include <netlink/netlink_snl_generic.h> 48 #include <netlink/netlink_snl_route.h> 49 50 #include <assert.h> 51 #include <err.h> 52 #include <errno.h> 53 #include <fcntl.h> 54 #include <stdlib.h> 55 #include <string.h> 56 57 #include "libpfctl.h" 58 59 struct pfctl_handle { 60 int fd; 61 struct snl_state ss; 62 }; 63 64 const char* PFCTL_SYNCOOKIES_MODE_NAMES[] = { 65 "never", 66 "always", 67 "adaptive" 68 }; 69 70 static int _pfctl_clear_states(int , const struct pfctl_kill *, 71 unsigned int *, uint64_t); 72 73 struct pfctl_handle * 74 pfctl_open(const char *pf_device) 75 { 76 struct pfctl_handle *h; 77 78 h = calloc(1, sizeof(struct pfctl_handle)); 79 h->fd = -1; 80 81 h->fd = open(pf_device, O_RDWR); 82 if (h->fd < 0) 83 goto error; 84 85 if (!snl_init(&h->ss, NETLINK_GENERIC)) 86 goto error; 87 88 return (h); 89 error: 90 close(h->fd); 91 snl_free(&h->ss); 92 free(h); 93 94 return (NULL); 95 } 96 97 void 98 pfctl_close(struct pfctl_handle *h) 99 { 100 close(h->fd); 101 snl_free(&h->ss); 102 free(h); 103 } 104 105 int 106 pfctl_fd(struct pfctl_handle *h) 107 { 108 return (h->fd); 109 } 110 111 static int 112 pfctl_do_ioctl(int dev, uint cmd, size_t size, nvlist_t **nvl) 113 { 114 struct pfioc_nv nv; 115 void *data; 116 size_t nvlen; 117 int ret; 118 119 data = nvlist_pack(*nvl, &nvlen); 120 if (nvlen > size) 121 size = nvlen; 122 123 retry: 124 nv.data = malloc(size); 125 if (nv.data == NULL) { 126 ret = ENOMEM; 127 goto out; 128 } 129 130 memcpy(nv.data, data, nvlen); 131 132 nv.len = nvlen; 133 nv.size = size; 134 135 ret = ioctl(dev, cmd, &nv); 136 if (ret == -1 && errno == ENOSPC) { 137 size *= 2; 138 free(nv.data); 139 goto retry; 140 } 141 142 nvlist_destroy(*nvl); 143 *nvl = NULL; 144 145 if (ret == 0) { 146 *nvl = nvlist_unpack(nv.data, nv.len, 0); 147 if (*nvl == NULL) { 148 ret = EIO; 149 goto out; 150 } 151 } else { 152 ret = errno; 153 } 154 155 out: 156 free(data); 157 free(nv.data); 158 159 return (ret); 160 } 161 162 static void 163 pf_nvuint_8_array(const nvlist_t *nvl, const char *name, size_t maxelems, 164 uint8_t *numbers, size_t *nelems) 165 { 166 const uint64_t *tmp; 167 size_t elems; 168 169 tmp = nvlist_get_number_array(nvl, name, &elems); 170 assert(elems <= maxelems); 171 172 for (size_t i = 0; i < elems; i++) 173 numbers[i] = tmp[i]; 174 175 if (nelems) 176 *nelems = elems; 177 } 178 179 static void 180 pf_nvuint_16_array(const nvlist_t *nvl, const char *name, size_t maxelems, 181 uint16_t *numbers, size_t *nelems) 182 { 183 const uint64_t *tmp; 184 size_t elems; 185 186 tmp = nvlist_get_number_array(nvl, name, &elems); 187 assert(elems <= maxelems); 188 189 for (size_t i = 0; i < elems; i++) 190 numbers[i] = tmp[i]; 191 192 if (nelems) 193 *nelems = elems; 194 } 195 196 static void 197 pf_nvuint_32_array(const nvlist_t *nvl, const char *name, size_t maxelems, 198 uint32_t *numbers, size_t *nelems) 199 { 200 const uint64_t *tmp; 201 size_t elems; 202 203 tmp = nvlist_get_number_array(nvl, name, &elems); 204 205 for (size_t i = 0; i < elems && i < maxelems; i++) 206 numbers[i] = tmp[i]; 207 208 if (nelems) 209 *nelems = elems; 210 } 211 212 static void 213 pf_nvuint_64_array(const nvlist_t *nvl, const char *name, size_t maxelems, 214 uint64_t *numbers, size_t *nelems) 215 { 216 const uint64_t *tmp; 217 size_t elems; 218 219 tmp = nvlist_get_number_array(nvl, name, &elems); 220 assert(elems <= maxelems); 221 222 for (size_t i = 0; i < elems; i++) 223 numbers[i] = tmp[i]; 224 225 if (nelems) 226 *nelems = elems; 227 } 228 229 int 230 pfctl_startstop(struct pfctl_handle *h, int start) 231 { 232 struct snl_errmsg_data e = {}; 233 struct snl_writer nw; 234 struct nlmsghdr *hdr; 235 uint32_t seq_id; 236 int family_id; 237 238 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME); 239 if (family_id == 0) 240 return (ENOTSUP); 241 242 snl_init_writer(&h->ss, &nw); 243 hdr = snl_create_genl_msg_request(&nw, family_id, 244 start ? PFNL_CMD_START : PFNL_CMD_STOP); 245 246 hdr = snl_finalize_msg(&nw); 247 if (hdr == NULL) 248 return (ENOMEM); 249 seq_id = hdr->nlmsg_seq; 250 251 snl_send_message(&h->ss, hdr); 252 253 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) { 254 } 255 256 return (e.error); 257 } 258 259 static void 260 _pfctl_get_status_counters(const nvlist_t *nvl, 261 struct pfctl_status_counters *counters) 262 { 263 const uint64_t *ids, *counts; 264 const char *const *names; 265 size_t id_len, counter_len, names_len; 266 267 ids = nvlist_get_number_array(nvl, "ids", &id_len); 268 counts = nvlist_get_number_array(nvl, "counters", &counter_len); 269 names = nvlist_get_string_array(nvl, "names", &names_len); 270 assert(id_len == counter_len); 271 assert(counter_len == names_len); 272 273 TAILQ_INIT(counters); 274 275 for (size_t i = 0; i < id_len; i++) { 276 struct pfctl_status_counter *c; 277 278 c = malloc(sizeof(*c)); 279 if (c == NULL) 280 continue; 281 282 c->id = ids[i]; 283 c->counter = counts[i]; 284 c->name = strdup(names[i]); 285 286 TAILQ_INSERT_TAIL(counters, c, entry); 287 } 288 } 289 290 struct pfctl_status * 291 pfctl_get_status(int dev) 292 { 293 struct pfctl_status *status; 294 nvlist_t *nvl; 295 size_t len; 296 const void *chksum; 297 298 status = calloc(1, sizeof(*status)); 299 if (status == NULL) 300 return (NULL); 301 302 nvl = nvlist_create(0); 303 304 if (pfctl_do_ioctl(dev, DIOCGETSTATUSNV, 4096, &nvl)) { 305 nvlist_destroy(nvl); 306 free(status); 307 return (NULL); 308 } 309 310 status->running = nvlist_get_bool(nvl, "running"); 311 status->since = nvlist_get_number(nvl, "since"); 312 status->debug = nvlist_get_number(nvl, "debug"); 313 status->hostid = ntohl(nvlist_get_number(nvl, "hostid")); 314 status->states = nvlist_get_number(nvl, "states"); 315 status->src_nodes = nvlist_get_number(nvl, "src_nodes"); 316 status->syncookies_active = nvlist_get_bool(nvl, "syncookies_active"); 317 status->reass = nvlist_get_number(nvl, "reass"); 318 319 strlcpy(status->ifname, nvlist_get_string(nvl, "ifname"), 320 IFNAMSIZ); 321 chksum = nvlist_get_binary(nvl, "chksum", &len); 322 assert(len == PF_MD5_DIGEST_LENGTH); 323 memcpy(status->pf_chksum, chksum, len); 324 325 _pfctl_get_status_counters(nvlist_get_nvlist(nvl, "counters"), 326 &status->counters); 327 _pfctl_get_status_counters(nvlist_get_nvlist(nvl, "lcounters"), 328 &status->lcounters); 329 _pfctl_get_status_counters(nvlist_get_nvlist(nvl, "fcounters"), 330 &status->fcounters); 331 _pfctl_get_status_counters(nvlist_get_nvlist(nvl, "scounters"), 332 &status->scounters); 333 334 pf_nvuint_64_array(nvl, "pcounters", 2 * 2 * 2, 335 (uint64_t *)status->pcounters, NULL); 336 pf_nvuint_64_array(nvl, "bcounters", 2 * 2, 337 (uint64_t *)status->bcounters, NULL); 338 339 nvlist_destroy(nvl); 340 341 return (status); 342 } 343 344 static uint64_t 345 _pfctl_status_counter(struct pfctl_status_counters *counters, uint64_t id) 346 { 347 struct pfctl_status_counter *c; 348 349 TAILQ_FOREACH(c, counters, entry) { 350 if (c->id == id) 351 return (c->counter); 352 } 353 354 return (0); 355 } 356 357 uint64_t 358 pfctl_status_counter(struct pfctl_status *status, int id) 359 { 360 return (_pfctl_status_counter(&status->counters, id)); 361 } 362 363 uint64_t 364 pfctl_status_lcounter(struct pfctl_status *status, int id) 365 { 366 return (_pfctl_status_counter(&status->lcounters, id)); 367 } 368 369 uint64_t 370 pfctl_status_fcounter(struct pfctl_status *status, int id) 371 { 372 return (_pfctl_status_counter(&status->fcounters, id)); 373 } 374 375 uint64_t 376 pfctl_status_scounter(struct pfctl_status *status, int id) 377 { 378 return (_pfctl_status_counter(&status->scounters, id)); 379 } 380 381 void 382 pfctl_free_status(struct pfctl_status *status) 383 { 384 struct pfctl_status_counter *c, *tmp; 385 386 if (status == NULL) 387 return; 388 389 TAILQ_FOREACH_SAFE(c, &status->counters, entry, tmp) { 390 free(c->name); 391 free(c); 392 } 393 TAILQ_FOREACH_SAFE(c, &status->lcounters, entry, tmp) { 394 free(c->name); 395 free(c); 396 } 397 TAILQ_FOREACH_SAFE(c, &status->fcounters, entry, tmp) { 398 free(c->name); 399 free(c); 400 } 401 TAILQ_FOREACH_SAFE(c, &status->scounters, entry, tmp) { 402 free(c->name); 403 free(c); 404 } 405 406 free(status); 407 } 408 409 static void 410 pfctl_nv_add_addr(nvlist_t *nvparent, const char *name, 411 const struct pf_addr *addr) 412 { 413 nvlist_t *nvl = nvlist_create(0); 414 415 nvlist_add_binary(nvl, "addr", addr, sizeof(*addr)); 416 417 nvlist_add_nvlist(nvparent, name, nvl); 418 nvlist_destroy(nvl); 419 } 420 421 static void 422 pf_nvaddr_to_addr(const nvlist_t *nvl, struct pf_addr *addr) 423 { 424 size_t len; 425 const void *data; 426 427 data = nvlist_get_binary(nvl, "addr", &len); 428 assert(len == sizeof(struct pf_addr)); 429 memcpy(addr, data, len); 430 } 431 432 static void 433 pfctl_nv_add_addr_wrap(nvlist_t *nvparent, const char *name, 434 const struct pf_addr_wrap *addr) 435 { 436 nvlist_t *nvl = nvlist_create(0); 437 438 nvlist_add_number(nvl, "type", addr->type); 439 nvlist_add_number(nvl, "iflags", addr->iflags); 440 if (addr->type == PF_ADDR_DYNIFTL) 441 nvlist_add_string(nvl, "ifname", addr->v.ifname); 442 if (addr->type == PF_ADDR_TABLE) 443 nvlist_add_string(nvl, "tblname", addr->v.tblname); 444 pfctl_nv_add_addr(nvl, "addr", &addr->v.a.addr); 445 pfctl_nv_add_addr(nvl, "mask", &addr->v.a.mask); 446 447 nvlist_add_nvlist(nvparent, name, nvl); 448 nvlist_destroy(nvl); 449 } 450 451 static void 452 pf_nvaddr_wrap_to_addr_wrap(const nvlist_t *nvl, struct pf_addr_wrap *addr) 453 { 454 bzero(addr, sizeof(*addr)); 455 456 addr->type = nvlist_get_number(nvl, "type"); 457 addr->iflags = nvlist_get_number(nvl, "iflags"); 458 if (addr->type == PF_ADDR_DYNIFTL) { 459 strlcpy(addr->v.ifname, nvlist_get_string(nvl, "ifname"), 460 IFNAMSIZ); 461 addr->p.dyncnt = nvlist_get_number(nvl, "dyncnt"); 462 } 463 if (addr->type == PF_ADDR_TABLE) { 464 strlcpy(addr->v.tblname, nvlist_get_string(nvl, "tblname"), 465 PF_TABLE_NAME_SIZE); 466 addr->p.tblcnt = nvlist_get_number(nvl, "tblcnt"); 467 } 468 469 pf_nvaddr_to_addr(nvlist_get_nvlist(nvl, "addr"), &addr->v.a.addr); 470 pf_nvaddr_to_addr(nvlist_get_nvlist(nvl, "mask"), &addr->v.a.mask); 471 } 472 473 static void 474 pfctl_nv_add_rule_addr(nvlist_t *nvparent, const char *name, 475 const struct pf_rule_addr *addr) 476 { 477 uint64_t ports[2]; 478 nvlist_t *nvl = nvlist_create(0); 479 480 pfctl_nv_add_addr_wrap(nvl, "addr", &addr->addr); 481 ports[0] = addr->port[0]; 482 ports[1] = addr->port[1]; 483 nvlist_add_number_array(nvl, "port", ports, 2); 484 nvlist_add_number(nvl, "neg", addr->neg); 485 nvlist_add_number(nvl, "port_op", addr->port_op); 486 487 nvlist_add_nvlist(nvparent, name, nvl); 488 nvlist_destroy(nvl); 489 } 490 491 static void 492 pf_nvrule_addr_to_rule_addr(const nvlist_t *nvl, struct pf_rule_addr *addr) 493 { 494 pf_nvaddr_wrap_to_addr_wrap(nvlist_get_nvlist(nvl, "addr"), &addr->addr); 495 496 pf_nvuint_16_array(nvl, "port", 2, addr->port, NULL); 497 addr->neg = nvlist_get_number(nvl, "neg"); 498 addr->port_op = nvlist_get_number(nvl, "port_op"); 499 } 500 501 static void 502 pf_nvmape_to_mape(const nvlist_t *nvl, struct pf_mape_portset *mape) 503 { 504 mape->offset = nvlist_get_number(nvl, "offset"); 505 mape->psidlen = nvlist_get_number(nvl, "psidlen"); 506 mape->psid = nvlist_get_number(nvl, "psid"); 507 } 508 509 static void 510 pf_nvpool_to_pool(const nvlist_t *nvl, struct pfctl_pool *pool) 511 { 512 size_t len; 513 const void *data; 514 515 data = nvlist_get_binary(nvl, "key", &len); 516 assert(len == sizeof(pool->key)); 517 memcpy(&pool->key, data, len); 518 519 pf_nvaddr_to_addr(nvlist_get_nvlist(nvl, "counter"), &pool->counter); 520 521 pool->tblidx = nvlist_get_number(nvl, "tblidx"); 522 pf_nvuint_16_array(nvl, "proxy_port", 2, pool->proxy_port, NULL); 523 pool->opts = nvlist_get_number(nvl, "opts"); 524 525 if (nvlist_exists_nvlist(nvl, "mape")) 526 pf_nvmape_to_mape(nvlist_get_nvlist(nvl, "mape"), &pool->mape); 527 } 528 529 static void 530 pf_nvrule_uid_to_rule_uid(const nvlist_t *nvl, struct pf_rule_uid *uid) 531 { 532 pf_nvuint_32_array(nvl, "uid", 2, uid->uid, NULL); 533 uid->op = nvlist_get_number(nvl, "op"); 534 } 535 536 static void 537 pf_nvdivert_to_divert(const nvlist_t *nvl, struct pfctl_rule *rule) 538 { 539 pf_nvaddr_to_addr(nvlist_get_nvlist(nvl, "addr"), &rule->divert.addr); 540 rule->divert.port = nvlist_get_number(nvl, "port"); 541 } 542 543 static void 544 pf_nvrule_to_rule(const nvlist_t *nvl, struct pfctl_rule *rule) 545 { 546 const uint64_t *skip; 547 const char *const *labels; 548 size_t skipcount, labelcount; 549 550 rule->nr = nvlist_get_number(nvl, "nr"); 551 552 pf_nvrule_addr_to_rule_addr(nvlist_get_nvlist(nvl, "src"), &rule->src); 553 pf_nvrule_addr_to_rule_addr(nvlist_get_nvlist(nvl, "dst"), &rule->dst); 554 555 skip = nvlist_get_number_array(nvl, "skip", &skipcount); 556 assert(skip); 557 assert(skipcount == PF_SKIP_COUNT); 558 for (int i = 0; i < PF_SKIP_COUNT; i++) 559 rule->skip[i].nr = skip[i]; 560 561 labels = nvlist_get_string_array(nvl, "labels", &labelcount); 562 assert(labelcount <= PF_RULE_MAX_LABEL_COUNT); 563 for (size_t i = 0; i < labelcount; i++) 564 strlcpy(rule->label[i], labels[i], PF_RULE_LABEL_SIZE); 565 rule->ridentifier = nvlist_get_number(nvl, "ridentifier"); 566 strlcpy(rule->ifname, nvlist_get_string(nvl, "ifname"), IFNAMSIZ); 567 strlcpy(rule->qname, nvlist_get_string(nvl, "qname"), PF_QNAME_SIZE); 568 strlcpy(rule->pqname, nvlist_get_string(nvl, "pqname"), PF_QNAME_SIZE); 569 strlcpy(rule->tagname, nvlist_get_string(nvl, "tagname"), 570 PF_TAG_NAME_SIZE); 571 strlcpy(rule->match_tagname, nvlist_get_string(nvl, "match_tagname"), 572 PF_TAG_NAME_SIZE); 573 574 strlcpy(rule->overload_tblname, nvlist_get_string(nvl, "overload_tblname"), 575 PF_TABLE_NAME_SIZE); 576 577 pf_nvpool_to_pool(nvlist_get_nvlist(nvl, "rpool"), &rule->rpool); 578 579 rule->evaluations = nvlist_get_number(nvl, "evaluations"); 580 pf_nvuint_64_array(nvl, "packets", 2, rule->packets, NULL); 581 pf_nvuint_64_array(nvl, "bytes", 2, rule->bytes, NULL); 582 583 if (nvlist_exists_number(nvl, "timestamp")) { 584 rule->last_active_timestamp = nvlist_get_number(nvl, "timestamp"); 585 } 586 587 rule->os_fingerprint = nvlist_get_number(nvl, "os_fingerprint"); 588 589 rule->rtableid = nvlist_get_number(nvl, "rtableid"); 590 pf_nvuint_32_array(nvl, "timeout", PFTM_MAX, rule->timeout, NULL); 591 rule->max_states = nvlist_get_number(nvl, "max_states"); 592 rule->max_src_nodes = nvlist_get_number(nvl, "max_src_nodes"); 593 rule->max_src_states = nvlist_get_number(nvl, "max_src_states"); 594 rule->max_src_conn = nvlist_get_number(nvl, "max_src_conn"); 595 rule->max_src_conn_rate.limit = 596 nvlist_get_number(nvl, "max_src_conn_rate.limit"); 597 rule->max_src_conn_rate.seconds = 598 nvlist_get_number(nvl, "max_src_conn_rate.seconds"); 599 rule->qid = nvlist_get_number(nvl, "qid"); 600 rule->pqid = nvlist_get_number(nvl, "pqid"); 601 rule->dnpipe = nvlist_get_number(nvl, "dnpipe"); 602 rule->dnrpipe = nvlist_get_number(nvl, "dnrpipe"); 603 rule->free_flags = nvlist_get_number(nvl, "dnflags"); 604 rule->prob = nvlist_get_number(nvl, "prob"); 605 rule->cuid = nvlist_get_number(nvl, "cuid"); 606 rule->cpid = nvlist_get_number(nvl, "cpid"); 607 608 rule->return_icmp = nvlist_get_number(nvl, "return_icmp"); 609 rule->return_icmp6 = nvlist_get_number(nvl, "return_icmp6"); 610 rule->max_mss = nvlist_get_number(nvl, "max_mss"); 611 rule->scrub_flags = nvlist_get_number(nvl, "scrub_flags"); 612 613 pf_nvrule_uid_to_rule_uid(nvlist_get_nvlist(nvl, "uid"), &rule->uid); 614 pf_nvrule_uid_to_rule_uid(nvlist_get_nvlist(nvl, "gid"), 615 (struct pf_rule_uid *)&rule->gid); 616 617 rule->rule_flag = nvlist_get_number(nvl, "rule_flag"); 618 rule->action = nvlist_get_number(nvl, "action"); 619 rule->direction = nvlist_get_number(nvl, "direction"); 620 rule->log = nvlist_get_number(nvl, "log"); 621 rule->logif = nvlist_get_number(nvl, "logif"); 622 rule->quick = nvlist_get_number(nvl, "quick"); 623 rule->ifnot = nvlist_get_number(nvl, "ifnot"); 624 rule->match_tag_not = nvlist_get_number(nvl, "match_tag_not"); 625 rule->natpass = nvlist_get_number(nvl, "natpass"); 626 627 rule->keep_state = nvlist_get_number(nvl, "keep_state"); 628 rule->af = nvlist_get_number(nvl, "af"); 629 rule->proto = nvlist_get_number(nvl, "proto"); 630 rule->type = nvlist_get_number(nvl, "type"); 631 rule->code = nvlist_get_number(nvl, "code"); 632 rule->flags = nvlist_get_number(nvl, "flags"); 633 rule->flagset = nvlist_get_number(nvl, "flagset"); 634 rule->min_ttl = nvlist_get_number(nvl, "min_ttl"); 635 rule->allow_opts = nvlist_get_number(nvl, "allow_opts"); 636 rule->rt = nvlist_get_number(nvl, "rt"); 637 rule->return_ttl = nvlist_get_number(nvl, "return_ttl"); 638 rule->tos = nvlist_get_number(nvl, "tos"); 639 rule->set_tos = nvlist_get_number(nvl, "set_tos"); 640 rule->anchor_relative = nvlist_get_number(nvl, "anchor_relative"); 641 rule->anchor_wildcard = nvlist_get_number(nvl, "anchor_wildcard"); 642 643 rule->flush = nvlist_get_number(nvl, "flush"); 644 rule->prio = nvlist_get_number(nvl, "prio"); 645 pf_nvuint_8_array(nvl, "set_prio", 2, rule->set_prio, NULL); 646 647 pf_nvdivert_to_divert(nvlist_get_nvlist(nvl, "divert"), rule); 648 649 rule->states_cur = nvlist_get_number(nvl, "states_cur"); 650 rule->states_tot = nvlist_get_number(nvl, "states_tot"); 651 rule->src_nodes = nvlist_get_number(nvl, "src_nodes"); 652 } 653 654 static void 655 pfctl_nveth_addr_to_eth_addr(const nvlist_t *nvl, struct pfctl_eth_addr *addr) 656 { 657 static const u_int8_t EMPTY_MAC[ETHER_ADDR_LEN] = { 0 }; 658 size_t len; 659 const void *data; 660 661 data = nvlist_get_binary(nvl, "addr", &len); 662 assert(len == sizeof(addr->addr)); 663 memcpy(addr->addr, data, sizeof(addr->addr)); 664 665 data = nvlist_get_binary(nvl, "mask", &len); 666 assert(len == sizeof(addr->mask)); 667 memcpy(addr->mask, data, sizeof(addr->mask)); 668 669 addr->neg = nvlist_get_bool(nvl, "neg"); 670 671 /* To make checks for 'is this address set?' easier. */ 672 addr->isset = memcmp(addr->addr, EMPTY_MAC, ETHER_ADDR_LEN) != 0; 673 } 674 675 static nvlist_t * 676 pfctl_eth_addr_to_nveth_addr(const struct pfctl_eth_addr *addr) 677 { 678 nvlist_t *nvl; 679 680 nvl = nvlist_create(0); 681 if (nvl == NULL) 682 return (NULL); 683 684 nvlist_add_bool(nvl, "neg", addr->neg); 685 nvlist_add_binary(nvl, "addr", &addr->addr, ETHER_ADDR_LEN); 686 nvlist_add_binary(nvl, "mask", &addr->mask, ETHER_ADDR_LEN); 687 688 return (nvl); 689 } 690 691 static void 692 pfctl_nveth_rule_to_eth_rule(const nvlist_t *nvl, struct pfctl_eth_rule *rule) 693 { 694 const char *const *labels; 695 size_t labelcount, i; 696 697 rule->nr = nvlist_get_number(nvl, "nr"); 698 rule->quick = nvlist_get_bool(nvl, "quick"); 699 strlcpy(rule->ifname, nvlist_get_string(nvl, "ifname"), IFNAMSIZ); 700 rule->ifnot = nvlist_get_bool(nvl, "ifnot"); 701 rule->direction = nvlist_get_number(nvl, "direction"); 702 rule->proto = nvlist_get_number(nvl, "proto"); 703 strlcpy(rule->match_tagname, nvlist_get_string(nvl, "match_tagname"), 704 PF_TAG_NAME_SIZE); 705 rule->match_tag = nvlist_get_number(nvl, "match_tag"); 706 rule->match_tag_not = nvlist_get_bool(nvl, "match_tag_not"); 707 708 labels = nvlist_get_string_array(nvl, "labels", &labelcount); 709 assert(labelcount <= PF_RULE_MAX_LABEL_COUNT); 710 for (i = 0; i < labelcount; i++) 711 strlcpy(rule->label[i], labels[i], PF_RULE_LABEL_SIZE); 712 rule->ridentifier = nvlist_get_number(nvl, "ridentifier"); 713 714 pfctl_nveth_addr_to_eth_addr(nvlist_get_nvlist(nvl, "src"), 715 &rule->src); 716 pfctl_nveth_addr_to_eth_addr(nvlist_get_nvlist(nvl, "dst"), 717 &rule->dst); 718 719 pf_nvrule_addr_to_rule_addr(nvlist_get_nvlist(nvl, "ipsrc"), 720 &rule->ipsrc); 721 pf_nvrule_addr_to_rule_addr(nvlist_get_nvlist(nvl, "ipdst"), 722 &rule->ipdst); 723 724 rule->evaluations = nvlist_get_number(nvl, "evaluations"); 725 rule->packets[0] = nvlist_get_number(nvl, "packets-in"); 726 rule->packets[1] = nvlist_get_number(nvl, "packets-out"); 727 rule->bytes[0] = nvlist_get_number(nvl, "bytes-in"); 728 rule->bytes[1] = nvlist_get_number(nvl, "bytes-out"); 729 730 if (nvlist_exists_number(nvl, "timestamp")) { 731 rule->last_active_timestamp = nvlist_get_number(nvl, "timestamp"); 732 } 733 734 strlcpy(rule->qname, nvlist_get_string(nvl, "qname"), PF_QNAME_SIZE); 735 strlcpy(rule->tagname, nvlist_get_string(nvl, "tagname"), 736 PF_TAG_NAME_SIZE); 737 738 rule->dnpipe = nvlist_get_number(nvl, "dnpipe"); 739 rule->dnflags = nvlist_get_number(nvl, "dnflags"); 740 741 rule->anchor_relative = nvlist_get_number(nvl, "anchor_relative"); 742 rule->anchor_wildcard = nvlist_get_number(nvl, "anchor_wildcard"); 743 744 strlcpy(rule->bridge_to, nvlist_get_string(nvl, "bridge_to"), 745 IFNAMSIZ); 746 747 rule->action = nvlist_get_number(nvl, "action"); 748 } 749 750 int 751 pfctl_get_eth_rulesets_info(int dev, struct pfctl_eth_rulesets_info *ri, 752 const char *path) 753 { 754 nvlist_t *nvl; 755 int ret; 756 757 bzero(ri, sizeof(*ri)); 758 759 nvl = nvlist_create(0); 760 nvlist_add_string(nvl, "path", path); 761 762 if ((ret = pfctl_do_ioctl(dev, DIOCGETETHRULESETS, 256, &nvl)) != 0) 763 goto out; 764 765 ri->nr = nvlist_get_number(nvl, "nr"); 766 767 out: 768 nvlist_destroy(nvl); 769 return (ret); 770 } 771 772 int 773 pfctl_get_eth_ruleset(int dev, const char *path, int nr, 774 struct pfctl_eth_ruleset_info *ri) 775 { 776 nvlist_t *nvl; 777 int ret; 778 779 bzero(ri, sizeof(*ri)); 780 781 nvl = nvlist_create(0); 782 nvlist_add_string(nvl, "path", path); 783 nvlist_add_number(nvl, "nr", nr); 784 785 if ((ret = pfctl_do_ioctl(dev, DIOCGETETHRULESET, 1024, &nvl)) != 0) 786 goto out; 787 788 ri->nr = nvlist_get_number(nvl, "nr"); 789 strlcpy(ri->path, nvlist_get_string(nvl, "path"), MAXPATHLEN); 790 strlcpy(ri->name, nvlist_get_string(nvl, "name"), 791 PF_ANCHOR_NAME_SIZE); 792 793 out: 794 nvlist_destroy(nvl); 795 return (ret); 796 } 797 798 int 799 pfctl_get_eth_rules_info(int dev, struct pfctl_eth_rules_info *rules, 800 const char *path) 801 { 802 nvlist_t *nvl; 803 int ret; 804 805 bzero(rules, sizeof(*rules)); 806 807 nvl = nvlist_create(0); 808 nvlist_add_string(nvl, "anchor", path); 809 810 if ((ret = pfctl_do_ioctl(dev, DIOCGETETHRULES, 1024, &nvl)) != 0) 811 goto out; 812 813 rules->nr = nvlist_get_number(nvl, "nr"); 814 rules->ticket = nvlist_get_number(nvl, "ticket"); 815 816 out: 817 nvlist_destroy(nvl); 818 return (ret); 819 } 820 821 int 822 pfctl_get_eth_rule(int dev, uint32_t nr, uint32_t ticket, 823 const char *path, struct pfctl_eth_rule *rule, bool clear, 824 char *anchor_call) 825 { 826 nvlist_t *nvl; 827 int ret; 828 829 nvl = nvlist_create(0); 830 831 nvlist_add_string(nvl, "anchor", path); 832 nvlist_add_number(nvl, "ticket", ticket); 833 nvlist_add_number(nvl, "nr", nr); 834 nvlist_add_bool(nvl, "clear", clear); 835 836 if ((ret = pfctl_do_ioctl(dev, DIOCGETETHRULE, 4096, &nvl)) != 0) 837 goto out; 838 839 pfctl_nveth_rule_to_eth_rule(nvl, rule); 840 841 if (anchor_call) 842 strlcpy(anchor_call, nvlist_get_string(nvl, "anchor_call"), 843 MAXPATHLEN); 844 845 out: 846 nvlist_destroy(nvl); 847 return (ret); 848 } 849 850 int 851 pfctl_add_eth_rule(int dev, const struct pfctl_eth_rule *r, const char *anchor, 852 const char *anchor_call, uint32_t ticket) 853 { 854 struct pfioc_nv nv; 855 nvlist_t *nvl, *addr; 856 void *packed; 857 int error = 0; 858 size_t labelcount, size; 859 860 nvl = nvlist_create(0); 861 862 nvlist_add_number(nvl, "ticket", ticket); 863 nvlist_add_string(nvl, "anchor", anchor); 864 nvlist_add_string(nvl, "anchor_call", anchor_call); 865 866 nvlist_add_number(nvl, "nr", r->nr); 867 nvlist_add_bool(nvl, "quick", r->quick); 868 nvlist_add_string(nvl, "ifname", r->ifname); 869 nvlist_add_bool(nvl, "ifnot", r->ifnot); 870 nvlist_add_number(nvl, "direction", r->direction); 871 nvlist_add_number(nvl, "proto", r->proto); 872 nvlist_add_string(nvl, "match_tagname", r->match_tagname); 873 nvlist_add_bool(nvl, "match_tag_not", r->match_tag_not); 874 875 addr = pfctl_eth_addr_to_nveth_addr(&r->src); 876 if (addr == NULL) { 877 nvlist_destroy(nvl); 878 return (ENOMEM); 879 } 880 nvlist_add_nvlist(nvl, "src", addr); 881 nvlist_destroy(addr); 882 883 addr = pfctl_eth_addr_to_nveth_addr(&r->dst); 884 if (addr == NULL) { 885 nvlist_destroy(nvl); 886 return (ENOMEM); 887 } 888 nvlist_add_nvlist(nvl, "dst", addr); 889 nvlist_destroy(addr); 890 891 pfctl_nv_add_rule_addr(nvl, "ipsrc", &r->ipsrc); 892 pfctl_nv_add_rule_addr(nvl, "ipdst", &r->ipdst); 893 894 labelcount = 0; 895 while (labelcount < PF_RULE_MAX_LABEL_COUNT && 896 r->label[labelcount][0] != 0) { 897 nvlist_append_string_array(nvl, "labels", 898 r->label[labelcount]); 899 labelcount++; 900 } 901 nvlist_add_number(nvl, "ridentifier", r->ridentifier); 902 903 nvlist_add_string(nvl, "qname", r->qname); 904 nvlist_add_string(nvl, "tagname", r->tagname); 905 nvlist_add_number(nvl, "dnpipe", r->dnpipe); 906 nvlist_add_number(nvl, "dnflags", r->dnflags); 907 908 nvlist_add_string(nvl, "bridge_to", r->bridge_to); 909 910 nvlist_add_number(nvl, "action", r->action); 911 912 packed = nvlist_pack(nvl, &size); 913 if (packed == NULL) { 914 nvlist_destroy(nvl); 915 return (ENOMEM); 916 } 917 918 nv.len = size; 919 nv.size = size; 920 nv.data = packed; 921 922 if (ioctl(dev, DIOCADDETHRULE, &nv) != 0) 923 error = errno; 924 925 free(packed); 926 nvlist_destroy(nvl); 927 928 return (error); 929 } 930 931 static void 932 snl_add_msg_attr_addr_wrap(struct snl_writer *nw, uint32_t type, const struct pf_addr_wrap *addr) 933 { 934 int off; 935 936 off = snl_add_msg_attr_nested(nw, type); 937 938 snl_add_msg_attr_ip6(nw, PF_AT_ADDR, &addr->v.a.addr.v6); 939 snl_add_msg_attr_ip6(nw, PF_AT_MASK, &addr->v.a.mask.v6); 940 941 if (addr->type == PF_ADDR_DYNIFTL) 942 snl_add_msg_attr_string(nw, PF_AT_IFNAME, addr->v.ifname); 943 if (addr->type == PF_ADDR_TABLE) 944 snl_add_msg_attr_string(nw, PF_AT_TABLENAME, addr->v.tblname); 945 snl_add_msg_attr_u8(nw, PF_AT_TYPE, addr->type); 946 snl_add_msg_attr_u8(nw, PF_AT_IFLAGS, addr->iflags); 947 948 snl_end_attr_nested(nw, off); 949 } 950 951 static void 952 snl_add_msg_attr_rule_addr(struct snl_writer *nw, uint32_t type, const struct pf_rule_addr *addr) 953 { 954 int off; 955 956 off = snl_add_msg_attr_nested(nw, type); 957 958 snl_add_msg_attr_addr_wrap(nw, PF_RAT_ADDR, &addr->addr); 959 snl_add_msg_attr_u16(nw, PF_RAT_SRC_PORT, addr->port[0]); 960 snl_add_msg_attr_u16(nw, PF_RAT_DST_PORT, addr->port[1]); 961 snl_add_msg_attr_u8(nw, PF_RAT_NEG, addr->neg); 962 snl_add_msg_attr_u8(nw, PF_RAT_OP, addr->port_op); 963 964 snl_end_attr_nested(nw, off); 965 } 966 967 static void 968 snl_add_msg_attr_rule_labels(struct snl_writer *nw, uint32_t type, const char labels[PF_RULE_MAX_LABEL_COUNT][PF_RULE_LABEL_SIZE]) 969 { 970 int off, i = 0; 971 972 off = snl_add_msg_attr_nested(nw, type); 973 974 while (i < PF_RULE_MAX_LABEL_COUNT && 975 labels[i][0] != 0) { 976 snl_add_msg_attr_string(nw, PF_LT_LABEL, labels[i]); 977 i++; 978 } 979 980 snl_end_attr_nested(nw, off); 981 } 982 983 static void 984 snl_add_msg_attr_mape(struct snl_writer *nw, uint32_t type, const struct pf_mape_portset *me) 985 { 986 int off; 987 988 off = snl_add_msg_attr_nested(nw, type); 989 990 snl_add_msg_attr_u8(nw, PF_MET_OFFSET, me->offset); 991 snl_add_msg_attr_u8(nw, PF_MET_PSID_LEN, me->psidlen); 992 snl_add_msg_attr_u16(nw, PF_MET_PSID, me->psid); 993 994 snl_end_attr_nested(nw, off); 995 } 996 997 static void 998 snl_add_msg_attr_rpool(struct snl_writer *nw, uint32_t type, const struct pfctl_pool *pool) 999 { 1000 int off; 1001 1002 off = snl_add_msg_attr_nested(nw, type); 1003 1004 snl_add_msg_attr(nw, PF_PT_KEY, sizeof(pool->key), &pool->key); 1005 snl_add_msg_attr_ip6(nw, PF_PT_COUNTER, &pool->counter.v6); 1006 snl_add_msg_attr_u32(nw, PF_PT_TBLIDX, pool->tblidx); 1007 snl_add_msg_attr_u16(nw, PF_PT_PROXY_SRC_PORT, pool->proxy_port[0]); 1008 snl_add_msg_attr_u16(nw, PF_PT_PROXY_DST_PORT, pool->proxy_port[1]); 1009 snl_add_msg_attr_u8(nw, PF_PT_OPTS, pool->opts); 1010 snl_add_msg_attr_mape(nw, PF_PT_MAPE, &pool->mape); 1011 1012 snl_end_attr_nested(nw, off); 1013 } 1014 1015 static void 1016 snl_add_msg_attr_timeouts(struct snl_writer *nw, uint32_t type, const uint32_t *timeouts) 1017 { 1018 int off; 1019 1020 off = snl_add_msg_attr_nested(nw, type); 1021 1022 for (int i = 0; i < PFTM_MAX; i++) 1023 snl_add_msg_attr_u32(nw, PF_TT_TIMEOUT, timeouts[i]); 1024 1025 snl_end_attr_nested(nw, off); 1026 } 1027 1028 static void 1029 snl_add_msg_attr_uid(struct snl_writer *nw, uint32_t type, const struct pf_rule_uid *uid) 1030 { 1031 int off; 1032 1033 off = snl_add_msg_attr_nested(nw, type); 1034 1035 snl_add_msg_attr_u32(nw, PF_RUT_UID_LOW, uid->uid[0]); 1036 snl_add_msg_attr_u32(nw, PF_RUT_UID_HIGH, uid->uid[1]); 1037 snl_add_msg_attr_u8(nw, PF_RUT_OP, uid->op); 1038 1039 snl_end_attr_nested(nw, off); 1040 } 1041 1042 static void 1043 snl_add_msg_attr_pf_rule(struct snl_writer *nw, uint32_t type, const struct pfctl_rule *r) 1044 { 1045 int off; 1046 1047 off = snl_add_msg_attr_nested(nw, type); 1048 1049 snl_add_msg_attr_rule_addr(nw, PF_RT_SRC, &r->src); 1050 snl_add_msg_attr_rule_addr(nw, PF_RT_DST, &r->dst); 1051 snl_add_msg_attr_rule_labels(nw, PF_RT_LABELS, r->label); 1052 snl_add_msg_attr_u32(nw, PF_RT_RIDENTIFIER, r->ridentifier); 1053 snl_add_msg_attr_string(nw, PF_RT_IFNAME, r->ifname); 1054 snl_add_msg_attr_string(nw, PF_RT_QNAME, r->qname); 1055 snl_add_msg_attr_string(nw, PF_RT_PQNAME, r->pqname); 1056 snl_add_msg_attr_string(nw, PF_RT_TAGNAME, r->tagname); 1057 snl_add_msg_attr_string(nw, PF_RT_MATCH_TAGNAME, r->match_tagname); 1058 snl_add_msg_attr_string(nw, PF_RT_OVERLOAD_TBLNAME, r->overload_tblname); 1059 snl_add_msg_attr_rpool(nw, PF_RT_RPOOL, &r->rpool); 1060 snl_add_msg_attr_u32(nw, PF_RT_OS_FINGERPRINT, r->os_fingerprint); 1061 snl_add_msg_attr_u32(nw, PF_RT_RTABLEID, r->rtableid); 1062 snl_add_msg_attr_timeouts(nw, PF_RT_TIMEOUT, r->timeout); 1063 snl_add_msg_attr_u32(nw, PF_RT_MAX_STATES, r->max_states); 1064 snl_add_msg_attr_u32(nw, PF_RT_MAX_SRC_NODES, r->max_src_nodes); 1065 snl_add_msg_attr_u32(nw, PF_RT_MAX_SRC_STATES, r->max_src_states); 1066 snl_add_msg_attr_u32(nw, PF_RT_MAX_SRC_CONN_RATE_LIMIT, r->max_src_conn_rate.limit); 1067 snl_add_msg_attr_u32(nw, PF_RT_MAX_SRC_CONN_RATE_SECS, r->max_src_conn_rate.seconds); 1068 1069 snl_add_msg_attr_u16(nw, PF_RT_DNPIPE, r->dnpipe); 1070 snl_add_msg_attr_u16(nw, PF_RT_DNRPIPE, r->dnrpipe); 1071 snl_add_msg_attr_u32(nw, PF_RT_DNFLAGS, r->free_flags); 1072 1073 snl_add_msg_attr_u32(nw, PF_RT_NR, r->nr); 1074 snl_add_msg_attr_u32(nw, PF_RT_PROB, r->prob); 1075 snl_add_msg_attr_u32(nw, PF_RT_CUID, r->cuid); 1076 snl_add_msg_attr_u32(nw, PF_RT_CPID, r->cpid); 1077 1078 snl_add_msg_attr_u16(nw, PF_RT_RETURN_ICMP, r->return_icmp); 1079 snl_add_msg_attr_u16(nw, PF_RT_RETURN_ICMP6, r->return_icmp6); 1080 snl_add_msg_attr_u16(nw, PF_RT_MAX_MSS, r->max_mss); 1081 snl_add_msg_attr_u16(nw, PF_RT_SCRUB_FLAGS, r->scrub_flags); 1082 1083 snl_add_msg_attr_uid(nw, PF_RT_UID, &r->uid); 1084 snl_add_msg_attr_uid(nw, PF_RT_GID, (const struct pf_rule_uid *)&r->gid); 1085 1086 snl_add_msg_attr_u32(nw, PF_RT_RULE_FLAG, r->rule_flag); 1087 snl_add_msg_attr_u8(nw, PF_RT_ACTION, r->action); 1088 snl_add_msg_attr_u8(nw, PF_RT_DIRECTION, r->direction); 1089 snl_add_msg_attr_u8(nw, PF_RT_LOG, r->log); 1090 snl_add_msg_attr_u8(nw, PF_RT_LOGIF, r->logif); 1091 snl_add_msg_attr_u8(nw, PF_RT_QUICK, r->quick); 1092 snl_add_msg_attr_u8(nw, PF_RT_IF_NOT, r->ifnot); 1093 snl_add_msg_attr_u8(nw, PF_RT_MATCH_TAG_NOT, r->match_tag_not); 1094 snl_add_msg_attr_u8(nw, PF_RT_NATPASS, r->natpass); 1095 snl_add_msg_attr_u8(nw, PF_RT_KEEP_STATE, r->keep_state); 1096 snl_add_msg_attr_u8(nw, PF_RT_AF, r->af); 1097 snl_add_msg_attr_u8(nw, PF_RT_PROTO, r->proto); 1098 snl_add_msg_attr_u8(nw, PF_RT_TYPE, r->type); 1099 snl_add_msg_attr_u8(nw, PF_RT_CODE, r->code); 1100 snl_add_msg_attr_u8(nw, PF_RT_FLAGS, r->flags); 1101 snl_add_msg_attr_u8(nw, PF_RT_FLAGSET, r->flagset); 1102 snl_add_msg_attr_u8(nw, PF_RT_MIN_TTL, r->min_ttl); 1103 snl_add_msg_attr_u8(nw, PF_RT_ALLOW_OPTS, r->allow_opts); 1104 snl_add_msg_attr_u8(nw, PF_RT_RT, r->rt); 1105 snl_add_msg_attr_u8(nw, PF_RT_RETURN_TTL, r->return_ttl); 1106 snl_add_msg_attr_u8(nw, PF_RT_TOS, r->tos); 1107 snl_add_msg_attr_u8(nw, PF_RT_SET_TOS, r->set_tos); 1108 1109 snl_add_msg_attr_u8(nw, PF_RT_ANCHOR_RELATIVE, r->anchor_relative); 1110 snl_add_msg_attr_u8(nw, PF_RT_ANCHOR_WILDCARD, r->anchor_wildcard); 1111 snl_add_msg_attr_u8(nw, PF_RT_FLUSH, r->flush); 1112 snl_add_msg_attr_u8(nw, PF_RT_PRIO, r->prio); 1113 snl_add_msg_attr_u8(nw, PF_RT_SET_PRIO, r->set_prio[0]); 1114 snl_add_msg_attr_u8(nw, PF_RT_SET_PRIO_REPLY, r->set_prio[1]); 1115 1116 snl_add_msg_attr_ip6(nw, PF_RT_DIVERT_ADDRESS, &r->divert.addr.v6); 1117 snl_add_msg_attr_u16(nw, PF_RT_DIVERT_PORT, r->divert.port); 1118 1119 snl_end_attr_nested(nw, off); 1120 } 1121 1122 int 1123 pfctl_add_rule(int dev __unused, const struct pfctl_rule *r, const char *anchor, 1124 const char *anchor_call, uint32_t ticket, uint32_t pool_ticket) 1125 { 1126 struct pfctl_handle *h; 1127 int ret; 1128 1129 h = pfctl_open(PF_DEVICE); 1130 if (h == NULL) 1131 return (ENODEV); 1132 1133 ret = pfctl_add_rule_h(h, r, anchor, anchor_call, ticket, pool_ticket); 1134 1135 pfctl_close(h); 1136 1137 return (ret); 1138 } 1139 1140 int 1141 pfctl_add_rule_h(struct pfctl_handle *h, const struct pfctl_rule *r, 1142 const char *anchor, const char *anchor_call, uint32_t ticket, 1143 uint32_t pool_ticket) 1144 { 1145 struct snl_writer nw; 1146 struct snl_errmsg_data e = {}; 1147 struct nlmsghdr *hdr; 1148 uint32_t seq_id; 1149 int family_id; 1150 1151 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME); 1152 if (family_id == 0) 1153 return (ENOTSUP); 1154 1155 snl_init_writer(&h->ss, &nw); 1156 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_ADDRULE); 1157 hdr->nlmsg_flags |= NLM_F_DUMP; 1158 snl_add_msg_attr_u32(&nw, PF_ART_TICKET, ticket); 1159 snl_add_msg_attr_u32(&nw, PF_ART_POOL_TICKET, pool_ticket); 1160 snl_add_msg_attr_string(&nw, PF_ART_ANCHOR, anchor); 1161 snl_add_msg_attr_string(&nw, PF_ART_ANCHOR_CALL, anchor_call); 1162 1163 snl_add_msg_attr_pf_rule(&nw, PF_ART_RULE, r); 1164 1165 if ((hdr = snl_finalize_msg(&nw)) == NULL) 1166 return (ENXIO); 1167 1168 seq_id = hdr->nlmsg_seq; 1169 1170 if (! snl_send_message(&h->ss, hdr)) 1171 return (ENXIO); 1172 1173 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) { 1174 } 1175 1176 return (e.error); 1177 } 1178 1179 #define _IN(_field) offsetof(struct genlmsghdr, _field) 1180 #define _OUT(_field) offsetof(struct pfctl_rules_info, _field) 1181 static struct snl_attr_parser ap_getrules[] = { 1182 { .type = PF_GR_NR, .off = _OUT(nr), .cb = snl_attr_get_uint32 }, 1183 { .type = PF_GR_TICKET, .off = _OUT(ticket), .cb = snl_attr_get_uint32 }, 1184 }; 1185 static struct snl_field_parser fp_getrules[] = { 1186 }; 1187 #undef _IN 1188 #undef _OUT 1189 SNL_DECLARE_PARSER(getrules_parser, struct genlmsghdr, fp_getrules, ap_getrules); 1190 1191 int 1192 pfctl_get_rules_info(int dev __unused, struct pfctl_rules_info *rules, uint32_t ruleset, 1193 const char *path) 1194 { 1195 struct snl_state ss = {}; 1196 struct snl_errmsg_data e = {}; 1197 struct nlmsghdr *hdr; 1198 struct snl_writer nw; 1199 uint32_t seq_id; 1200 int family_id; 1201 1202 snl_init(&ss, NETLINK_GENERIC); 1203 family_id = snl_get_genl_family(&ss, PFNL_FAMILY_NAME); 1204 if (family_id == 0) 1205 return (ENOTSUP); 1206 1207 snl_init_writer(&ss, &nw); 1208 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GETRULES); 1209 hdr->nlmsg_flags |= NLM_F_DUMP; 1210 1211 snl_add_msg_attr_string(&nw, PF_GR_ANCHOR, path); 1212 snl_add_msg_attr_u8(&nw, PF_GR_ACTION, ruleset); 1213 1214 hdr = snl_finalize_msg(&nw); 1215 if (hdr == NULL) 1216 return (ENOMEM); 1217 1218 seq_id = hdr->nlmsg_seq; 1219 if (! snl_send_message(&ss, hdr)) 1220 return (ENXIO); 1221 1222 while ((hdr = snl_read_reply_multi(&ss, seq_id, &e)) != NULL) { 1223 if (! snl_parse_nlmsg(&ss, hdr, &getrules_parser, rules)) 1224 continue; 1225 } 1226 1227 return (e.error); 1228 } 1229 1230 int 1231 pfctl_get_rule(int dev, uint32_t nr, uint32_t ticket, const char *anchor, 1232 uint32_t ruleset, struct pfctl_rule *rule, char *anchor_call) 1233 { 1234 return (pfctl_get_clear_rule(dev, nr, ticket, anchor, ruleset, rule, 1235 anchor_call, false)); 1236 } 1237 1238 #define _OUT(_field) offsetof(struct pf_addr_wrap, _field) 1239 static const struct snl_attr_parser ap_addr_wrap[] = { 1240 { .type = PF_AT_ADDR, .off = _OUT(v.a.addr), .cb = snl_attr_get_in6_addr }, 1241 { .type = PF_AT_MASK, .off = _OUT(v.a.mask), .cb = snl_attr_get_in6_addr }, 1242 { .type = PF_AT_IFNAME, .off = _OUT(v.ifname), .arg = (void *)IFNAMSIZ,.cb = snl_attr_copy_string }, 1243 { .type = PF_AT_TABLENAME, .off = _OUT(v.tblname), .arg = (void *)PF_TABLE_NAME_SIZE, .cb = snl_attr_copy_string }, 1244 { .type = PF_AT_TYPE, .off = _OUT(type), .cb = snl_attr_get_uint8 }, 1245 { .type = PF_AT_IFLAGS, .off = _OUT(iflags), .cb = snl_attr_get_uint8 }, 1246 { .type = PF_AT_TBLCNT, .off = _OUT(p.tblcnt), .cb = snl_attr_get_uint32 }, 1247 { .type = PF_AT_DYNCNT, .off = _OUT(p.dyncnt), .cb = snl_attr_get_uint32 }, 1248 }; 1249 SNL_DECLARE_ATTR_PARSER(addr_wrap_parser, ap_addr_wrap); 1250 #undef _OUT 1251 1252 #define _OUT(_field) offsetof(struct pf_rule_addr, _field) 1253 static struct snl_attr_parser ap_rule_addr[] = { 1254 { .type = PF_RAT_ADDR, .off = _OUT(addr), .arg = &addr_wrap_parser, .cb = snl_attr_get_nested }, 1255 { .type = PF_RAT_SRC_PORT, .off = _OUT(port[0]), .cb = snl_attr_get_uint16 }, 1256 { .type = PF_RAT_DST_PORT, .off = _OUT(port[1]), .cb = snl_attr_get_uint16 }, 1257 { .type = PF_RAT_NEG, .off = _OUT(neg), .cb = snl_attr_get_uint8 }, 1258 { .type = PF_RAT_OP, .off = _OUT(port_op), .cb = snl_attr_get_uint8 }, 1259 }; 1260 #undef _OUT 1261 SNL_DECLARE_ATTR_PARSER(rule_addr_parser, ap_rule_addr); 1262 1263 struct snl_parsed_labels 1264 { 1265 char labels[PF_RULE_MAX_LABEL_COUNT][PF_RULE_LABEL_SIZE]; 1266 uint32_t i; 1267 }; 1268 1269 static bool 1270 snl_attr_get_pf_rule_labels(struct snl_state *ss, struct nlattr *nla, 1271 const void *arg __unused, void *target) 1272 { 1273 struct snl_parsed_labels *l = (struct snl_parsed_labels *)target; 1274 bool ret; 1275 1276 if (l->i >= PF_RULE_MAX_LABEL_COUNT) 1277 return (E2BIG); 1278 1279 ret = snl_attr_copy_string(ss, nla, (void *)PF_RULE_LABEL_SIZE, 1280 l->labels[l->i]); 1281 if (ret) 1282 l->i++; 1283 1284 return (ret); 1285 } 1286 1287 #define _OUT(_field) offsetof(struct nl_parsed_labels, _field) 1288 static const struct snl_attr_parser ap_labels[] = { 1289 { .type = PF_LT_LABEL, .off = 0, .cb = snl_attr_get_pf_rule_labels }, 1290 }; 1291 SNL_DECLARE_ATTR_PARSER(rule_labels_parser, ap_labels); 1292 #undef _OUT 1293 1294 static bool 1295 snl_attr_get_nested_pf_rule_labels(struct snl_state *ss, struct nlattr *nla, 1296 const void *arg __unused, void *target) 1297 { 1298 struct snl_parsed_labels parsed_labels = { }; 1299 bool error; 1300 1301 /* Assumes target points to the beginning of the structure */ 1302 error = snl_parse_header(ss, NLA_DATA(nla), NLA_DATA_LEN(nla), &rule_labels_parser, &parsed_labels); 1303 if (! error) 1304 return (error); 1305 1306 memcpy(target, parsed_labels.labels, sizeof(parsed_labels.labels)); 1307 1308 return (true); 1309 } 1310 1311 #define _OUT(_field) offsetof(struct pf_mape_portset, _field) 1312 static const struct snl_attr_parser ap_mape_portset[] = { 1313 { .type = PF_MET_OFFSET, .off = _OUT(offset), .cb = snl_attr_get_uint8 }, 1314 { .type = PF_MET_PSID_LEN, .off = _OUT(psidlen), .cb = snl_attr_get_uint8 }, 1315 {. type = PF_MET_PSID, .off = _OUT(psid), .cb = snl_attr_get_uint16 }, 1316 }; 1317 SNL_DECLARE_ATTR_PARSER(mape_portset_parser, ap_mape_portset); 1318 #undef _OUT 1319 1320 #define _OUT(_field) offsetof(struct pfctl_pool, _field) 1321 static const struct snl_attr_parser ap_pool[] = { 1322 { .type = PF_PT_KEY, .off = _OUT(key), .arg = (void *)sizeof(struct pf_poolhashkey), .cb = snl_attr_get_bytes }, 1323 { .type = PF_PT_COUNTER, .off = _OUT(counter), .cb = snl_attr_get_in6_addr }, 1324 { .type = PF_PT_TBLIDX, .off = _OUT(tblidx), .cb = snl_attr_get_uint32 }, 1325 { .type = PF_PT_PROXY_SRC_PORT, .off = _OUT(proxy_port[0]), .cb = snl_attr_get_uint16 }, 1326 { .type = PF_PT_PROXY_DST_PORT, .off = _OUT(proxy_port[1]), .cb = snl_attr_get_uint16 }, 1327 { .type = PF_PT_OPTS, .off = _OUT(opts), .cb = snl_attr_get_uint8 }, 1328 { .type = PF_PT_MAPE, .off = _OUT(mape), .arg = &mape_portset_parser, .cb = snl_attr_get_nested }, 1329 }; 1330 SNL_DECLARE_ATTR_PARSER(pool_parser, ap_pool); 1331 #undef _OUT 1332 1333 struct nl_parsed_timeouts 1334 { 1335 uint32_t timeouts[PFTM_MAX]; 1336 uint32_t i; 1337 }; 1338 1339 static bool 1340 snl_attr_get_pf_timeout(struct snl_state *ss, struct nlattr *nla, 1341 const void *arg __unused, void *target) 1342 { 1343 struct nl_parsed_timeouts *t = (struct nl_parsed_timeouts *)target; 1344 bool ret; 1345 1346 if (t->i >= PFTM_MAX) 1347 return (E2BIG); 1348 1349 ret = snl_attr_get_uint32(ss, nla, NULL, &t->timeouts[t->i]); 1350 if (ret) 1351 t->i++; 1352 1353 return (ret); 1354 } 1355 1356 #define _OUT(_field) offsetof(struct nl_parsed_timeout, _field) 1357 static const struct snl_attr_parser ap_timeouts[] = { 1358 { .type = PF_TT_TIMEOUT, .off = 0, .cb = snl_attr_get_pf_timeout }, 1359 }; 1360 SNL_DECLARE_ATTR_PARSER(timeout_parser, ap_timeouts); 1361 #undef _OUT 1362 1363 static bool 1364 snl_attr_get_nested_timeouts(struct snl_state *ss, struct nlattr *nla, 1365 const void *arg __unused, void *target) 1366 { 1367 struct nl_parsed_timeouts parsed_timeouts = { }; 1368 bool error; 1369 1370 /* Assumes target points to the beginning of the structure */ 1371 error = snl_parse_header(ss, NLA_DATA(nla), NLA_DATA_LEN(nla), &timeout_parser, &parsed_timeouts); 1372 if (! error) 1373 return (error); 1374 1375 memcpy(target, parsed_timeouts.timeouts, sizeof(parsed_timeouts.timeouts)); 1376 1377 return (true); 1378 } 1379 1380 #define _OUT(_field) offsetof(struct pf_rule_uid, _field) 1381 static const struct snl_attr_parser ap_rule_uid[] = { 1382 { .type = PF_RUT_UID_LOW, .off = _OUT(uid[0]), .cb = snl_attr_get_uint32 }, 1383 { .type = PF_RUT_UID_HIGH, .off = _OUT(uid[1]), .cb = snl_attr_get_uint32 }, 1384 { .type = PF_RUT_OP, .off = _OUT(op), .cb = snl_attr_get_uint8 }, 1385 }; 1386 SNL_DECLARE_ATTR_PARSER(rule_uid_parser, ap_rule_uid); 1387 #undef _OUT 1388 1389 struct pfctl_nl_get_rule { 1390 struct pfctl_rule r; 1391 char anchor_call[MAXPATHLEN]; 1392 }; 1393 #define _OUT(_field) offsetof(struct pfctl_nl_get_rule, _field) 1394 static struct snl_attr_parser ap_getrule[] = { 1395 { .type = PF_RT_SRC, .off = _OUT(r.src), .arg = &rule_addr_parser,.cb = snl_attr_get_nested }, 1396 { .type = PF_RT_DST, .off = _OUT(r.dst), .arg = &rule_addr_parser,.cb = snl_attr_get_nested }, 1397 { .type = PF_RT_RIDENTIFIER, .off = _OUT(r.ridentifier), .cb = snl_attr_get_uint32 }, 1398 { .type = PF_RT_LABELS, .off = _OUT(r.label), .arg = &rule_labels_parser,.cb = snl_attr_get_nested_pf_rule_labels }, 1399 { .type = PF_RT_IFNAME, .off = _OUT(r.ifname), .arg = (void *)IFNAMSIZ, .cb = snl_attr_copy_string }, 1400 { .type = PF_RT_QNAME, .off = _OUT(r.qname), .arg = (void *)PF_QNAME_SIZE, .cb = snl_attr_copy_string }, 1401 { .type = PF_RT_PQNAME, .off = _OUT(r.pqname), .arg = (void *)PF_QNAME_SIZE, .cb = snl_attr_copy_string }, 1402 { .type = PF_RT_TAGNAME, .off = _OUT(r.tagname), .arg = (void *)PF_TAG_NAME_SIZE, .cb = snl_attr_copy_string }, 1403 { .type = PF_RT_MATCH_TAGNAME, .off = _OUT(r.match_tagname), .arg = (void *)PF_TAG_NAME_SIZE, .cb = snl_attr_copy_string }, 1404 { .type = PF_RT_OVERLOAD_TBLNAME, .off = _OUT(r.overload_tblname), .arg = (void *)PF_TABLE_NAME_SIZE, .cb = snl_attr_copy_string }, 1405 { .type = PF_RT_RPOOL, .off = _OUT(r.rpool), .arg = &pool_parser, .cb = snl_attr_get_nested }, 1406 { .type = PF_RT_OS_FINGERPRINT, .off = _OUT(r.os_fingerprint), .cb = snl_attr_get_uint32 }, 1407 { .type = PF_RT_RTABLEID, .off = _OUT(r.rtableid), .cb = snl_attr_get_uint32 }, 1408 { .type = PF_RT_TIMEOUT, .off = _OUT(r.timeout), .arg = &timeout_parser, .cb = snl_attr_get_nested_timeouts }, 1409 { .type = PF_RT_MAX_STATES, .off = _OUT(r.max_states), .cb = snl_attr_get_uint32 }, 1410 { .type = PF_RT_MAX_SRC_NODES, .off = _OUT(r.max_src_nodes), .cb = snl_attr_get_uint32 }, 1411 { .type = PF_RT_MAX_SRC_STATES, .off = _OUT(r.max_src_states), .cb = snl_attr_get_uint32 }, 1412 { .type = PF_RT_MAX_SRC_CONN_RATE_LIMIT, .off = _OUT(r.max_src_conn_rate.limit), .cb = snl_attr_get_uint32 }, 1413 { .type = PF_RT_MAX_SRC_CONN_RATE_SECS, .off = _OUT(r.max_src_conn_rate.seconds), .cb = snl_attr_get_uint32 }, 1414 { .type = PF_RT_DNPIPE, .off = _OUT(r.dnpipe), .cb = snl_attr_get_uint16 }, 1415 { .type = PF_RT_DNRPIPE, .off = _OUT(r.dnrpipe), .cb = snl_attr_get_uint16 }, 1416 { .type = PF_RT_DNFLAGS, .off = _OUT(r.free_flags), .cb = snl_attr_get_uint32 }, 1417 { .type = PF_RT_NR, .off = _OUT(r.nr), .cb = snl_attr_get_uint32 }, 1418 { .type = PF_RT_PROB, .off = _OUT(r.prob), .cb = snl_attr_get_uint32 }, 1419 { .type = PF_RT_CUID, .off = _OUT(r.cuid), .cb = snl_attr_get_uint32 }, 1420 {. type = PF_RT_CPID, .off = _OUT(r.cpid), .cb = snl_attr_get_uint32 }, 1421 { .type = PF_RT_RETURN_ICMP, .off = _OUT(r.return_icmp), .cb = snl_attr_get_uint16 }, 1422 { .type = PF_RT_RETURN_ICMP6, .off = _OUT(r.return_icmp6), .cb = snl_attr_get_uint16 }, 1423 { .type = PF_RT_MAX_MSS, .off = _OUT(r.max_mss), .cb = snl_attr_get_uint16 }, 1424 { .type = PF_RT_SCRUB_FLAGS, .off = _OUT(r.scrub_flags), .cb = snl_attr_get_uint16 }, 1425 { .type = PF_RT_UID, .off = _OUT(r.uid), .arg = &rule_uid_parser, .cb = snl_attr_get_nested }, 1426 { .type = PF_RT_GID, .off = _OUT(r.gid), .arg = &rule_uid_parser, .cb = snl_attr_get_nested }, 1427 { .type = PF_RT_RULE_FLAG, .off = _OUT(r.rule_flag), .cb = snl_attr_get_uint32 }, 1428 { .type = PF_RT_ACTION, .off = _OUT(r.action), .cb = snl_attr_get_uint8 }, 1429 { .type = PF_RT_DIRECTION, .off = _OUT(r.direction), .cb = snl_attr_get_uint8 }, 1430 { .type = PF_RT_LOG, .off = _OUT(r.log), .cb = snl_attr_get_uint8 }, 1431 { .type = PF_RT_LOGIF, .off = _OUT(r.logif), .cb = snl_attr_get_uint8 }, 1432 { .type = PF_RT_QUICK, .off = _OUT(r.quick), .cb = snl_attr_get_uint8 }, 1433 { .type = PF_RT_IF_NOT, .off = _OUT(r.ifnot), .cb = snl_attr_get_uint8 }, 1434 { .type = PF_RT_MATCH_TAG_NOT, .off = _OUT(r.match_tag_not), .cb = snl_attr_get_uint8 }, 1435 { .type = PF_RT_NATPASS, .off = _OUT(r.natpass), .cb = snl_attr_get_uint8 }, 1436 { .type = PF_RT_KEEP_STATE, .off = _OUT(r.keep_state), .cb = snl_attr_get_uint8 }, 1437 { .type = PF_RT_AF, .off = _OUT(r.af), .cb = snl_attr_get_uint8 }, 1438 { .type = PF_RT_PROTO, .off = _OUT(r.proto), .cb = snl_attr_get_uint8 }, 1439 { .type = PF_RT_TYPE, .off = _OUT(r.type), .cb = snl_attr_get_uint8 }, 1440 { .type = PF_RT_CODE, .off = _OUT(r.code), .cb = snl_attr_get_uint8 }, 1441 { .type = PF_RT_FLAGS, .off = _OUT(r.flags), .cb = snl_attr_get_uint8 }, 1442 { .type = PF_RT_FLAGSET, .off = _OUT(r.flagset), .cb = snl_attr_get_uint8 }, 1443 { .type = PF_RT_MIN_TTL, .off = _OUT(r.min_ttl), .cb = snl_attr_get_uint8 }, 1444 { .type = PF_RT_ALLOW_OPTS, .off = _OUT(r.allow_opts), .cb = snl_attr_get_uint8 }, 1445 { .type = PF_RT_RT, .off = _OUT(r.rt), .cb = snl_attr_get_uint8 }, 1446 { .type = PF_RT_RETURN_TTL, .off = _OUT(r.return_ttl), .cb = snl_attr_get_uint8 }, 1447 { .type = PF_RT_TOS, .off = _OUT(r.tos), .cb = snl_attr_get_uint8 }, 1448 { .type = PF_RT_SET_TOS, .off = _OUT(r.set_tos), .cb = snl_attr_get_uint8 }, 1449 { .type = PF_RT_ANCHOR_RELATIVE, .off = _OUT(r.anchor_relative), .cb = snl_attr_get_uint8 }, 1450 { .type = PF_RT_ANCHOR_WILDCARD, .off = _OUT(r.anchor_wildcard), .cb = snl_attr_get_uint8 }, 1451 { .type = PF_RT_FLUSH, .off = _OUT(r.flush), .cb = snl_attr_get_uint8 }, 1452 { .type = PF_RT_PRIO, .off = _OUT(r.prio), .cb = snl_attr_get_uint8 }, 1453 { .type = PF_RT_SET_PRIO, .off = _OUT(r.set_prio[0]), .cb = snl_attr_get_uint8 }, 1454 { .type = PF_RT_SET_PRIO_REPLY, .off = _OUT(r.set_prio[1]), .cb = snl_attr_get_uint8 }, 1455 { .type = PF_RT_DIVERT_ADDRESS, .off = _OUT(r.divert.addr), .cb = snl_attr_get_in6_addr }, 1456 { .type = PF_RT_DIVERT_PORT, .off = _OUT(r.divert.port), .cb = snl_attr_get_uint16 }, 1457 { .type = PF_RT_PACKETS_IN, .off = _OUT(r.packets[0]), .cb = snl_attr_get_uint64 }, 1458 { .type = PF_RT_PACKETS_OUT, .off = _OUT(r.packets[1]), .cb = snl_attr_get_uint64 }, 1459 { .type = PF_RT_BYTES_IN, .off = _OUT(r.bytes[0]), .cb = snl_attr_get_uint64 }, 1460 { .type = PF_RT_BYTES_OUT, .off = _OUT(r.bytes[1]), .cb = snl_attr_get_uint64 }, 1461 { .type = PF_RT_EVALUATIONS, .off = _OUT(r.evaluations), .cb = snl_attr_get_uint64 }, 1462 { .type = PF_RT_TIMESTAMP, .off = _OUT(r.last_active_timestamp), .cb = snl_attr_get_uint64 }, 1463 { .type = PF_RT_STATES_CUR, .off = _OUT(r.states_cur), .cb = snl_attr_get_uint64 }, 1464 { .type = PF_RT_STATES_TOTAL, .off = _OUT(r.states_tot), .cb = snl_attr_get_uint64 }, 1465 { .type = PF_RT_SRC_NODES, .off = _OUT(r.src_nodes), .cb = snl_attr_get_uint64 }, 1466 { .type = PF_RT_ANCHOR_CALL, .off = _OUT(anchor_call), .arg = (void*)MAXPATHLEN, .cb = snl_attr_copy_string }, 1467 }; 1468 static struct snl_field_parser fp_getrule[] = {}; 1469 #undef _OUT 1470 SNL_DECLARE_PARSER(getrule_parser, struct genlmsghdr, fp_getrule, ap_getrule); 1471 1472 int 1473 pfctl_get_clear_rule_h(struct pfctl_handle *h, uint32_t nr, uint32_t ticket, 1474 const char *anchor, uint32_t ruleset, struct pfctl_rule *rule, 1475 char *anchor_call, bool clear) 1476 { 1477 struct pfctl_nl_get_rule attrs = {}; 1478 struct snl_errmsg_data e = {}; 1479 struct nlmsghdr *hdr; 1480 struct snl_writer nw; 1481 uint32_t seq_id; 1482 int family_id; 1483 1484 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME); 1485 if (family_id == 0) 1486 return (ENOTSUP); 1487 1488 snl_init_writer(&h->ss, &nw); 1489 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GETRULE); 1490 hdr->nlmsg_flags |= NLM_F_DUMP; 1491 1492 snl_add_msg_attr_string(&nw, PF_GR_ANCHOR, anchor); 1493 snl_add_msg_attr_u8(&nw, PF_GR_ACTION, ruleset); 1494 snl_add_msg_attr_u32(&nw, PF_GR_NR, nr); 1495 snl_add_msg_attr_u32(&nw, PF_GR_TICKET, ticket); 1496 snl_add_msg_attr_u8(&nw, PF_GR_CLEAR, clear); 1497 1498 hdr = snl_finalize_msg(&nw); 1499 if (hdr == NULL) 1500 return (ENOMEM); 1501 1502 seq_id = hdr->nlmsg_seq; 1503 if (! snl_send_message(&h->ss, hdr)) 1504 return (ENXIO); 1505 1506 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) { 1507 if (! snl_parse_nlmsg(&h->ss, hdr, &getrule_parser, &attrs)) 1508 continue; 1509 } 1510 1511 memcpy(rule, &attrs.r, sizeof(attrs.r)); 1512 strlcpy(anchor_call, attrs.anchor_call, MAXPATHLEN); 1513 1514 return (e.error); 1515 } 1516 1517 int 1518 pfctl_get_clear_rule(int dev, uint32_t nr, uint32_t ticket, 1519 const char *anchor, uint32_t ruleset, struct pfctl_rule *rule, 1520 char *anchor_call, bool clear) 1521 { 1522 nvlist_t *nvl; 1523 int ret; 1524 1525 nvl = nvlist_create(0); 1526 if (nvl == 0) 1527 return (ENOMEM); 1528 1529 nvlist_add_number(nvl, "nr", nr); 1530 nvlist_add_number(nvl, "ticket", ticket); 1531 nvlist_add_string(nvl, "anchor", anchor); 1532 nvlist_add_number(nvl, "ruleset", ruleset); 1533 1534 if (clear) 1535 nvlist_add_bool(nvl, "clear_counter", true); 1536 1537 if ((ret = pfctl_do_ioctl(dev, DIOCGETRULENV, 8192, &nvl)) != 0) 1538 goto out; 1539 1540 pf_nvrule_to_rule(nvlist_get_nvlist(nvl, "rule"), rule); 1541 1542 if (anchor_call) 1543 strlcpy(anchor_call, nvlist_get_string(nvl, "anchor_call"), 1544 MAXPATHLEN); 1545 1546 out: 1547 nvlist_destroy(nvl); 1548 return (ret); 1549 } 1550 1551 int 1552 pfctl_set_keepcounters(int dev, bool keep) 1553 { 1554 struct pfioc_nv nv; 1555 nvlist_t *nvl; 1556 int ret; 1557 1558 nvl = nvlist_create(0); 1559 1560 nvlist_add_bool(nvl, "keep_counters", keep); 1561 1562 nv.data = nvlist_pack(nvl, &nv.len); 1563 nv.size = nv.len; 1564 1565 nvlist_destroy(nvl); 1566 1567 ret = ioctl(dev, DIOCKEEPCOUNTERS, &nv); 1568 1569 free(nv.data); 1570 return (ret); 1571 } 1572 1573 struct pfctl_creator { 1574 uint32_t id; 1575 }; 1576 #define _IN(_field) offsetof(struct genlmsghdr, _field) 1577 #define _OUT(_field) offsetof(struct pfctl_creator, _field) 1578 static struct snl_attr_parser ap_creators[] = { 1579 { .type = PF_ST_CREATORID, .off = _OUT(id), .cb = snl_attr_get_uint32 }, 1580 }; 1581 static struct snl_field_parser fp_creators[] = { 1582 }; 1583 #undef _IN 1584 #undef _OUT 1585 SNL_DECLARE_PARSER(creator_parser, struct genlmsghdr, fp_creators, ap_creators); 1586 1587 static int 1588 pfctl_get_creators_nl(struct snl_state *ss, uint32_t *creators, size_t *len) 1589 { 1590 1591 int family_id = snl_get_genl_family(ss, PFNL_FAMILY_NAME); 1592 size_t i = 0; 1593 1594 struct nlmsghdr *hdr; 1595 struct snl_writer nw; 1596 1597 if (family_id == 0) 1598 return (ENOTSUP); 1599 1600 snl_init_writer(ss, &nw); 1601 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GETCREATORS); 1602 hdr->nlmsg_flags |= NLM_F_DUMP; 1603 hdr = snl_finalize_msg(&nw); 1604 if (hdr == NULL) 1605 return (ENOMEM); 1606 uint32_t seq_id = hdr->nlmsg_seq; 1607 1608 snl_send_message(ss, hdr); 1609 1610 struct snl_errmsg_data e = {}; 1611 while ((hdr = snl_read_reply_multi(ss, seq_id, &e)) != NULL) { 1612 struct pfctl_creator c; 1613 bzero(&c, sizeof(c)); 1614 1615 if (!snl_parse_nlmsg(ss, hdr, &creator_parser, &c)) 1616 continue; 1617 1618 creators[i] = c.id; 1619 i++; 1620 if (i > *len) 1621 return (E2BIG); 1622 } 1623 1624 *len = i; 1625 1626 return (0); 1627 } 1628 1629 int 1630 pfctl_get_creatorids(struct pfctl_handle *h, uint32_t *creators, size_t *len) 1631 { 1632 int error; 1633 1634 error = pfctl_get_creators_nl(&h->ss, creators, len); 1635 1636 return (error); 1637 } 1638 1639 static inline bool 1640 snl_attr_get_pfaddr(struct snl_state *ss __unused, struct nlattr *nla, 1641 const void *arg __unused, void *target) 1642 { 1643 memcpy(target, NLA_DATA(nla), NLA_DATA_LEN(nla)); 1644 return (true); 1645 } 1646 1647 static inline bool 1648 snl_attr_store_ifname(struct snl_state *ss __unused, struct nlattr *nla, 1649 const void *arg __unused, void *target) 1650 { 1651 size_t maxlen = NLA_DATA_LEN(nla); 1652 1653 if (strnlen((char *)NLA_DATA(nla), maxlen) < maxlen) { 1654 strlcpy(target, (char *)NLA_DATA(nla), maxlen); 1655 return (true); 1656 } 1657 return (false); 1658 } 1659 1660 #define _OUT(_field) offsetof(struct pfctl_state_peer, _field) 1661 static const struct snl_attr_parser nla_p_speer[] = { 1662 { .type = PF_STP_SEQLO, .off = _OUT(seqlo), .cb = snl_attr_get_uint32 }, 1663 { .type = PF_STP_SEQHI, .off = _OUT(seqhi), .cb = snl_attr_get_uint32 }, 1664 { .type = PF_STP_SEQDIFF, .off = _OUT(seqdiff), .cb = snl_attr_get_uint32 }, 1665 { .type = PF_STP_STATE, .off = _OUT(state), .cb = snl_attr_get_uint8 }, 1666 { .type = PF_STP_WSCALE, .off = _OUT(wscale), .cb = snl_attr_get_uint8 }, 1667 }; 1668 SNL_DECLARE_ATTR_PARSER(speer_parser, nla_p_speer); 1669 #undef _OUT 1670 1671 #define _OUT(_field) offsetof(struct pf_state_key_export, _field) 1672 static const struct snl_attr_parser nla_p_skey[] = { 1673 { .type = PF_STK_ADDR0, .off = _OUT(addr[0]), .cb = snl_attr_get_pfaddr }, 1674 { .type = PF_STK_ADDR1, .off = _OUT(addr[1]), .cb = snl_attr_get_pfaddr }, 1675 { .type = PF_STK_PORT0, .off = _OUT(port[0]), .cb = snl_attr_get_uint16 }, 1676 { .type = PF_STK_PORT1, .off = _OUT(port[1]), .cb = snl_attr_get_uint16 }, 1677 }; 1678 SNL_DECLARE_ATTR_PARSER(skey_parser, nla_p_skey); 1679 #undef _OUT 1680 1681 #define _IN(_field) offsetof(struct genlmsghdr, _field) 1682 #define _OUT(_field) offsetof(struct pfctl_state, _field) 1683 static struct snl_attr_parser ap_state[] = { 1684 { .type = PF_ST_ID, .off = _OUT(id), .cb = snl_attr_get_uint64 }, 1685 { .type = PF_ST_CREATORID, .off = _OUT(creatorid), .cb = snl_attr_get_uint32 }, 1686 { .type = PF_ST_IFNAME, .off = _OUT(ifname), .cb = snl_attr_store_ifname }, 1687 { .type = PF_ST_ORIG_IFNAME, .off = _OUT(orig_ifname), .cb = snl_attr_store_ifname }, 1688 { .type = PF_ST_KEY_WIRE, .off = _OUT(key[0]), .arg = &skey_parser, .cb = snl_attr_get_nested }, 1689 { .type = PF_ST_KEY_STACK, .off = _OUT(key[1]), .arg = &skey_parser, .cb = snl_attr_get_nested }, 1690 { .type = PF_ST_PEER_SRC, .off = _OUT(src), .arg = &speer_parser, .cb = snl_attr_get_nested }, 1691 { .type = PF_ST_PEER_DST, .off = _OUT(dst), .arg = &speer_parser, .cb = snl_attr_get_nested }, 1692 { .type = PF_ST_RT_ADDR, .off = _OUT(rt_addr), .cb = snl_attr_get_pfaddr }, 1693 { .type = PF_ST_RULE, .off = _OUT(rule), .cb = snl_attr_get_uint32 }, 1694 { .type = PF_ST_ANCHOR, .off = _OUT(anchor), .cb = snl_attr_get_uint32 }, 1695 { .type = PF_ST_NAT_RULE, .off = _OUT(nat_rule), .cb = snl_attr_get_uint32 }, 1696 { .type = PF_ST_CREATION, .off = _OUT(creation), .cb = snl_attr_get_uint32 }, 1697 { .type = PF_ST_EXPIRE, .off = _OUT(expire), .cb = snl_attr_get_uint32 }, 1698 { .type = PF_ST_PACKETS0, .off = _OUT(packets[0]), .cb = snl_attr_get_uint64 }, 1699 { .type = PF_ST_PACKETS1, .off = _OUT(packets[1]), .cb = snl_attr_get_uint64 }, 1700 { .type = PF_ST_BYTES0, .off = _OUT(bytes[0]), .cb = snl_attr_get_uint64 }, 1701 { .type = PF_ST_BYTES1, .off = _OUT(bytes[1]), .cb = snl_attr_get_uint64 }, 1702 { .type = PF_ST_AF, .off = _OUT(key[0].af), .cb = snl_attr_get_uint8 }, 1703 { .type = PF_ST_PROTO, .off = _OUT(key[0].proto), .cb = snl_attr_get_uint8 }, 1704 { .type = PF_ST_DIRECTION, .off = _OUT(direction), .cb = snl_attr_get_uint8 }, 1705 { .type = PF_ST_LOG, .off = _OUT(log), .cb = snl_attr_get_uint8 }, 1706 { .type = PF_ST_STATE_FLAGS, .off = _OUT(state_flags), .cb = snl_attr_get_uint16 }, 1707 { .type = PF_ST_SYNC_FLAGS, .off = _OUT(sync_flags), .cb = snl_attr_get_uint8 }, 1708 { .type = PF_ST_RTABLEID, .off = _OUT(rtableid), .cb = snl_attr_get_int32 }, 1709 { .type = PF_ST_MIN_TTL, .off = _OUT(min_ttl), .cb = snl_attr_get_uint8 }, 1710 { .type = PF_ST_MAX_MSS, .off = _OUT(max_mss), .cb = snl_attr_get_uint16 }, 1711 { .type = PF_ST_DNPIPE, .off = _OUT(dnpipe), .cb = snl_attr_get_uint16 }, 1712 { .type = PF_ST_DNRPIPE, .off = _OUT(dnrpipe), .cb = snl_attr_get_uint16 }, 1713 { .type = PF_ST_RT, .off = _OUT(rt), .cb = snl_attr_get_uint8 }, 1714 { .type = PF_ST_RT_IFNAME, .off = _OUT(rt_ifname), .cb = snl_attr_store_ifname }, 1715 }; 1716 static struct snl_field_parser fp_state[] = { 1717 }; 1718 #undef _IN 1719 #undef _OUT 1720 SNL_DECLARE_PARSER(state_parser, struct genlmsghdr, fp_state, ap_state); 1721 1722 static const struct snl_hdr_parser *all_parsers[] = { 1723 &state_parser, &skey_parser, &speer_parser, 1724 &creator_parser, &getrules_parser 1725 }; 1726 1727 static int 1728 pfctl_get_states_nl(struct pfctl_state_filter *filter, struct snl_state *ss, pfctl_get_state_fn f, void *arg) 1729 { 1730 SNL_VERIFY_PARSERS(all_parsers); 1731 int family_id = snl_get_genl_family(ss, PFNL_FAMILY_NAME); 1732 int ret; 1733 1734 struct nlmsghdr *hdr; 1735 struct snl_writer nw; 1736 1737 if (family_id == 0) 1738 return (ENOTSUP); 1739 1740 snl_init_writer(ss, &nw); 1741 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GETSTATES); 1742 hdr->nlmsg_flags |= NLM_F_DUMP; 1743 snl_add_msg_attr_string(&nw, PF_ST_IFNAME, filter->ifname); 1744 snl_add_msg_attr_u16(&nw, PF_ST_PROTO, filter->proto); 1745 snl_add_msg_attr_u8(&nw, PF_ST_AF, filter->af); 1746 snl_add_msg_attr_ip6(&nw, PF_ST_FILTER_ADDR, &filter->addr.v6); 1747 snl_add_msg_attr_ip6(&nw, PF_ST_FILTER_MASK, &filter->mask.v6); 1748 1749 hdr = snl_finalize_msg(&nw); 1750 if (hdr == NULL) 1751 return (ENOMEM); 1752 1753 uint32_t seq_id = hdr->nlmsg_seq; 1754 1755 snl_send_message(ss, hdr); 1756 1757 struct snl_errmsg_data e = {}; 1758 while ((hdr = snl_read_reply_multi(ss, seq_id, &e)) != NULL) { 1759 struct pfctl_state s; 1760 bzero(&s, sizeof(s)); 1761 if (!snl_parse_nlmsg(ss, hdr, &state_parser, &s)) 1762 continue; 1763 1764 s.key[1].af = s.key[0].af; 1765 s.key[1].proto = s.key[0].proto; 1766 1767 ret = f(&s, arg); 1768 if (ret != 0) 1769 return (ret); 1770 } 1771 1772 return (0); 1773 } 1774 1775 int 1776 pfctl_get_states_iter(pfctl_get_state_fn f, void *arg) 1777 { 1778 struct pfctl_state_filter filter = {}; 1779 return (pfctl_get_filtered_states_iter(&filter, f, arg)); 1780 } 1781 1782 int 1783 pfctl_get_filtered_states_iter(struct pfctl_state_filter *filter, pfctl_get_state_fn f, void *arg) 1784 { 1785 struct snl_state ss = {}; 1786 int error; 1787 1788 snl_init(&ss, NETLINK_GENERIC); 1789 error = pfctl_get_states_nl(filter, &ss, f, arg); 1790 snl_free(&ss); 1791 1792 return (error); 1793 } 1794 1795 static int 1796 pfctl_append_states(struct pfctl_state *s, void *arg) 1797 { 1798 struct pfctl_state *new; 1799 struct pfctl_states *states = (struct pfctl_states *)arg; 1800 1801 new = malloc(sizeof(*s)); 1802 if (new == NULL) 1803 return (ENOMEM); 1804 1805 memcpy(new, s, sizeof(*s)); 1806 1807 TAILQ_INSERT_TAIL(&states->states, new, entry); 1808 1809 return (0); 1810 } 1811 1812 int 1813 pfctl_get_states(int dev __unused, struct pfctl_states *states) 1814 { 1815 int ret; 1816 1817 bzero(states, sizeof(*states)); 1818 TAILQ_INIT(&states->states); 1819 1820 ret = pfctl_get_states_iter(pfctl_append_states, states); 1821 if (ret != 0) { 1822 pfctl_free_states(states); 1823 return (ret); 1824 } 1825 1826 return (0); 1827 } 1828 1829 void 1830 pfctl_free_states(struct pfctl_states *states) 1831 { 1832 struct pfctl_state *s, *tmp; 1833 1834 TAILQ_FOREACH_SAFE(s, &states->states, entry, tmp) { 1835 free(s); 1836 } 1837 1838 bzero(states, sizeof(*states)); 1839 } 1840 1841 struct pfctl_nl_clear_states { 1842 uint32_t killed; 1843 }; 1844 #define _OUT(_field) offsetof(struct pfctl_nl_clear_states, _field) 1845 static struct snl_attr_parser ap_clear_states[] = { 1846 { .type = PF_CS_KILLED, .off = _OUT(killed), .cb = snl_attr_get_uint32 }, 1847 }; 1848 static struct snl_field_parser fp_clear_states[] = {}; 1849 #undef _OUT 1850 SNL_DECLARE_PARSER(clear_states_parser, struct genlmsghdr, fp_clear_states, ap_clear_states); 1851 1852 static int 1853 _pfctl_clear_states_h(struct pfctl_handle *h, const struct pfctl_kill *kill, 1854 unsigned int *killed, int cmd) 1855 { 1856 struct snl_writer nw; 1857 struct snl_errmsg_data e = {}; 1858 struct pfctl_nl_clear_states attrs = {}; 1859 struct nlmsghdr *hdr; 1860 uint32_t seq_id; 1861 int family_id; 1862 1863 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME); 1864 if (family_id == 0) 1865 return (ENOTSUP); 1866 1867 snl_init_writer(&h->ss, &nw); 1868 hdr = snl_create_genl_msg_request(&nw, family_id, cmd); 1869 hdr->nlmsg_flags |= NLM_F_DUMP; 1870 1871 snl_add_msg_attr_u64(&nw, PF_CS_CMP_ID, kill->cmp.id); 1872 snl_add_msg_attr_u32(&nw, PF_CS_CMP_CREATORID, htonl(kill->cmp.creatorid)); 1873 snl_add_msg_attr_u8(&nw, PF_CS_CMP_DIR, kill->cmp.direction); 1874 snl_add_msg_attr_u8(&nw, PF_CS_AF, kill->af); 1875 snl_add_msg_attr_u8(&nw, PF_CS_PROTO, kill->proto); 1876 snl_add_msg_attr_rule_addr(&nw, PF_CS_SRC, &kill->src); 1877 snl_add_msg_attr_rule_addr(&nw, PF_CS_DST, &kill->dst); 1878 snl_add_msg_attr_rule_addr(&nw, PF_CS_RT_ADDR, &kill->rt_addr); 1879 snl_add_msg_attr_string(&nw, PF_CS_IFNAME, kill->ifname); 1880 snl_add_msg_attr_string(&nw, PF_CS_LABEL, kill->label); 1881 snl_add_msg_attr_bool(&nw, PF_CS_KILL_MATCH, kill->kill_match); 1882 snl_add_msg_attr_bool(&nw, PF_CS_NAT, kill->nat); 1883 1884 if ((hdr = snl_finalize_msg(&nw)) == NULL) 1885 return (ENXIO); 1886 1887 seq_id = hdr->nlmsg_seq; 1888 1889 if (! snl_send_message(&h->ss, hdr)) 1890 return (ENXIO); 1891 1892 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) { 1893 if (! snl_parse_nlmsg(&h->ss, hdr, &clear_states_parser, &attrs)) 1894 continue; 1895 } 1896 1897 if (killed) 1898 *killed = attrs.killed; 1899 1900 return (e.error); 1901 } 1902 1903 int 1904 pfctl_clear_states_h(struct pfctl_handle *h, const struct pfctl_kill *kill, 1905 unsigned int *killed) 1906 { 1907 return(_pfctl_clear_states_h(h, kill, killed, PFNL_CMD_CLRSTATES)); 1908 } 1909 1910 int 1911 pfctl_kill_states_h(struct pfctl_handle *h, const struct pfctl_kill *kill, 1912 unsigned int *killed) 1913 { 1914 return(_pfctl_clear_states_h(h, kill, killed, PFNL_CMD_KILLSTATES)); 1915 } 1916 1917 static int 1918 _pfctl_clear_states(int dev __unused, const struct pfctl_kill *kill, 1919 unsigned int *killed, uint64_t cmd) 1920 { 1921 struct pfctl_handle *h; 1922 int ret; 1923 1924 h = pfctl_open(PF_DEVICE); 1925 if (h == NULL) 1926 return (ENODEV); 1927 1928 ret = _pfctl_clear_states_h(h, kill, killed, cmd); 1929 pfctl_close(h); 1930 1931 return (ret); 1932 } 1933 1934 int 1935 pfctl_clear_states(int dev __unused, const struct pfctl_kill *kill, 1936 unsigned int *killed) 1937 { 1938 return (_pfctl_clear_states(dev, kill, killed, PFNL_CMD_CLRSTATES)); 1939 } 1940 1941 int 1942 pfctl_kill_states(int dev __unused, const struct pfctl_kill *kill, unsigned int *killed) 1943 { 1944 return (_pfctl_clear_states(dev, kill, killed, PFNL_CMD_KILLSTATES)); 1945 } 1946 1947 int 1948 pfctl_clear_rules(int dev, const char *anchorname) 1949 { 1950 struct pfioc_trans trans; 1951 struct pfioc_trans_e transe[2]; 1952 int ret; 1953 1954 bzero(&trans, sizeof(trans)); 1955 bzero(&transe, sizeof(transe)); 1956 1957 transe[0].rs_num = PF_RULESET_SCRUB; 1958 if (strlcpy(transe[0].anchor, anchorname, sizeof(transe[0].anchor)) 1959 >= sizeof(transe[0].anchor)) 1960 return (E2BIG); 1961 1962 transe[1].rs_num = PF_RULESET_FILTER; 1963 if (strlcpy(transe[1].anchor, anchorname, sizeof(transe[1].anchor)) 1964 >= sizeof(transe[1].anchor)) 1965 return (E2BIG); 1966 1967 trans.size = 2; 1968 trans.esize = sizeof(transe[0]); 1969 trans.array = transe; 1970 1971 ret = ioctl(dev, DIOCXBEGIN, &trans); 1972 if (ret != 0) 1973 return (ret); 1974 return ioctl(dev, DIOCXCOMMIT, &trans); 1975 } 1976 1977 int 1978 pfctl_clear_nat(int dev, const char *anchorname) 1979 { 1980 struct pfioc_trans trans; 1981 struct pfioc_trans_e transe[3]; 1982 int ret; 1983 1984 bzero(&trans, sizeof(trans)); 1985 bzero(&transe, sizeof(transe)); 1986 1987 transe[0].rs_num = PF_RULESET_NAT; 1988 if (strlcpy(transe[0].anchor, anchorname, sizeof(transe[0].anchor)) 1989 >= sizeof(transe[0].anchor)) 1990 return (E2BIG); 1991 1992 transe[1].rs_num = PF_RULESET_BINAT; 1993 if (strlcpy(transe[1].anchor, anchorname, sizeof(transe[1].anchor)) 1994 >= sizeof(transe[0].anchor)) 1995 return (E2BIG); 1996 1997 transe[2].rs_num = PF_RULESET_RDR; 1998 if (strlcpy(transe[2].anchor, anchorname, sizeof(transe[2].anchor)) 1999 >= sizeof(transe[2].anchor)) 2000 return (E2BIG); 2001 2002 trans.size = 3; 2003 trans.esize = sizeof(transe[0]); 2004 trans.array = transe; 2005 2006 ret = ioctl(dev, DIOCXBEGIN, &trans); 2007 if (ret != 0) 2008 return (ret); 2009 return ioctl(dev, DIOCXCOMMIT, &trans); 2010 } 2011 int 2012 pfctl_clear_eth_rules(int dev, const char *anchorname) 2013 { 2014 struct pfioc_trans trans; 2015 struct pfioc_trans_e transe; 2016 int ret; 2017 2018 bzero(&trans, sizeof(trans)); 2019 bzero(&transe, sizeof(transe)); 2020 2021 transe.rs_num = PF_RULESET_ETH; 2022 if (strlcpy(transe.anchor, anchorname, sizeof(transe.anchor)) 2023 >= sizeof(transe.anchor)) 2024 return (E2BIG); 2025 2026 trans.size = 1; 2027 trans.esize = sizeof(transe); 2028 trans.array = &transe; 2029 2030 ret = ioctl(dev, DIOCXBEGIN, &trans); 2031 if (ret != 0) 2032 return (ret); 2033 return ioctl(dev, DIOCXCOMMIT, &trans); 2034 } 2035 2036 static int 2037 pfctl_get_limit(int dev, const int index, uint *limit) 2038 { 2039 struct pfioc_limit pl; 2040 2041 bzero(&pl, sizeof(pl)); 2042 pl.index = index; 2043 2044 if (ioctl(dev, DIOCGETLIMIT, &pl) == -1) 2045 return (errno); 2046 2047 *limit = pl.limit; 2048 2049 return (0); 2050 } 2051 2052 int 2053 pfctl_set_syncookies(int dev, const struct pfctl_syncookies *s) 2054 { 2055 struct pfioc_nv nv; 2056 nvlist_t *nvl; 2057 int ret; 2058 uint state_limit; 2059 uint64_t lim, hi, lo; 2060 2061 ret = pfctl_get_limit(dev, PF_LIMIT_STATES, &state_limit); 2062 if (ret != 0) 2063 return (ret); 2064 2065 lim = state_limit; 2066 hi = lim * s->highwater / 100; 2067 lo = lim * s->lowwater / 100; 2068 2069 if (lo == hi) 2070 hi++; 2071 2072 nvl = nvlist_create(0); 2073 2074 nvlist_add_bool(nvl, "enabled", s->mode != PFCTL_SYNCOOKIES_NEVER); 2075 nvlist_add_bool(nvl, "adaptive", s->mode == PFCTL_SYNCOOKIES_ADAPTIVE); 2076 nvlist_add_number(nvl, "highwater", hi); 2077 nvlist_add_number(nvl, "lowwater", lo); 2078 2079 nv.data = nvlist_pack(nvl, &nv.len); 2080 nv.size = nv.len; 2081 nvlist_destroy(nvl); 2082 nvl = NULL; 2083 2084 ret = ioctl(dev, DIOCSETSYNCOOKIES, &nv); 2085 2086 free(nv.data); 2087 return (ret); 2088 } 2089 2090 int 2091 pfctl_get_syncookies(int dev, struct pfctl_syncookies *s) 2092 { 2093 nvlist_t *nvl; 2094 int ret; 2095 uint state_limit; 2096 bool enabled, adaptive; 2097 2098 ret = pfctl_get_limit(dev, PF_LIMIT_STATES, &state_limit); 2099 if (ret != 0) 2100 return (ret); 2101 2102 bzero(s, sizeof(*s)); 2103 2104 nvl = nvlist_create(0); 2105 2106 if ((ret = pfctl_do_ioctl(dev, DIOCGETSYNCOOKIES, 256, &nvl)) != 0) { 2107 ret = errno; 2108 goto out; 2109 } 2110 2111 enabled = nvlist_get_bool(nvl, "enabled"); 2112 adaptive = nvlist_get_bool(nvl, "adaptive"); 2113 2114 if (enabled) { 2115 if (adaptive) 2116 s->mode = PFCTL_SYNCOOKIES_ADAPTIVE; 2117 else 2118 s->mode = PFCTL_SYNCOOKIES_ALWAYS; 2119 } else { 2120 s->mode = PFCTL_SYNCOOKIES_NEVER; 2121 } 2122 2123 s->highwater = nvlist_get_number(nvl, "highwater") * 100 / state_limit; 2124 s->lowwater = nvlist_get_number(nvl, "lowwater") * 100 / state_limit; 2125 s->halfopen_states = nvlist_get_number(nvl, "halfopen_states"); 2126 2127 out: 2128 nvlist_destroy(nvl); 2129 return (ret); 2130 } 2131 2132 int 2133 pfctl_table_add_addrs(int dev, struct pfr_table *tbl, struct pfr_addr 2134 *addr, int size, int *nadd, int flags) 2135 { 2136 struct pfioc_table io; 2137 2138 if (tbl == NULL || size < 0 || (size && addr == NULL)) { 2139 return (EINVAL); 2140 } 2141 bzero(&io, sizeof io); 2142 io.pfrio_flags = flags; 2143 io.pfrio_table = *tbl; 2144 io.pfrio_buffer = addr; 2145 io.pfrio_esize = sizeof(*addr); 2146 io.pfrio_size = size; 2147 2148 if (ioctl(dev, DIOCRADDADDRS, &io)) 2149 return (errno); 2150 if (nadd != NULL) 2151 *nadd = io.pfrio_nadd; 2152 return (0); 2153 } 2154 2155 int 2156 pfctl_table_del_addrs(int dev, struct pfr_table *tbl, struct pfr_addr 2157 *addr, int size, int *ndel, int flags) 2158 { 2159 struct pfioc_table io; 2160 2161 if (tbl == NULL || size < 0 || (size && addr == NULL)) { 2162 return (EINVAL); 2163 } 2164 bzero(&io, sizeof io); 2165 io.pfrio_flags = flags; 2166 io.pfrio_table = *tbl; 2167 io.pfrio_buffer = addr; 2168 io.pfrio_esize = sizeof(*addr); 2169 io.pfrio_size = size; 2170 2171 if (ioctl(dev, DIOCRDELADDRS, &io)) 2172 return (errno); 2173 if (ndel != NULL) 2174 *ndel = io.pfrio_ndel; 2175 return (0); 2176 } 2177 2178 int 2179 pfctl_table_set_addrs(int dev, struct pfr_table *tbl, struct pfr_addr 2180 *addr, int size, int *size2, int *nadd, int *ndel, int *nchange, int flags) 2181 { 2182 struct pfioc_table io; 2183 2184 if (tbl == NULL || size < 0 || (size && addr == NULL)) { 2185 return (EINVAL); 2186 } 2187 bzero(&io, sizeof io); 2188 io.pfrio_flags = flags; 2189 io.pfrio_table = *tbl; 2190 io.pfrio_buffer = addr; 2191 io.pfrio_esize = sizeof(*addr); 2192 io.pfrio_size = size; 2193 io.pfrio_size2 = (size2 != NULL) ? *size2 : 0; 2194 if (ioctl(dev, DIOCRSETADDRS, &io)) 2195 return (-1); 2196 if (nadd != NULL) 2197 *nadd = io.pfrio_nadd; 2198 if (ndel != NULL) 2199 *ndel = io.pfrio_ndel; 2200 if (nchange != NULL) 2201 *nchange = io.pfrio_nchange; 2202 if (size2 != NULL) 2203 *size2 = io.pfrio_size2; 2204 return (0); 2205 } 2206 2207 int pfctl_table_get_addrs(int dev, struct pfr_table *tbl, struct pfr_addr *addr, 2208 int *size, int flags) 2209 { 2210 struct pfioc_table io; 2211 2212 if (tbl == NULL || size == NULL || *size < 0 || 2213 (*size && addr == NULL)) { 2214 return (EINVAL); 2215 } 2216 bzero(&io, sizeof io); 2217 io.pfrio_flags = flags; 2218 io.pfrio_table = *tbl; 2219 io.pfrio_buffer = addr; 2220 io.pfrio_esize = sizeof(*addr); 2221 io.pfrio_size = *size; 2222 if (ioctl(dev, DIOCRGETADDRS, &io)) 2223 return (-1); 2224 *size = io.pfrio_size; 2225 return (0); 2226 } 2227 2228 int 2229 pfctl_set_statusif(struct pfctl_handle *h, const char *ifname) 2230 { 2231 struct snl_writer nw; 2232 struct snl_errmsg_data e = {}; 2233 struct nlmsghdr *hdr; 2234 uint32_t seq_id; 2235 int family_id; 2236 2237 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME); 2238 if (family_id == 0) 2239 return (ENOTSUP); 2240 2241 snl_init_writer(&h->ss, &nw); 2242 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_SET_STATUSIF); 2243 2244 snl_add_msg_attr_string(&nw, PF_SS_IFNAME, ifname); 2245 2246 if ((hdr = snl_finalize_msg(&nw)) == NULL) 2247 return (ENXIO); 2248 2249 seq_id = hdr->nlmsg_seq; 2250 2251 if (! snl_send_message(&h->ss, hdr)) 2252 return (ENXIO); 2253 2254 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) { 2255 } 2256 2257 return (e.error); 2258 } 2259