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_netlink_cmd(struct pfctl_handle *h, uint cmd) 113 { 114 struct snl_errmsg_data e = {}; 115 struct snl_writer nw; 116 struct nlmsghdr *hdr; 117 uint32_t seq_id; 118 int family_id; 119 120 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME); 121 if (family_id == 0) 122 return (ENOTSUP); 123 124 snl_init_writer(&h->ss, &nw); 125 hdr = snl_create_genl_msg_request(&nw, family_id, cmd); 126 127 hdr = snl_finalize_msg(&nw); 128 if (hdr == NULL) 129 return (ENOMEM); 130 seq_id = hdr->nlmsg_seq; 131 132 snl_send_message(&h->ss, hdr); 133 134 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) { 135 } 136 137 return (e.error); 138 } 139 140 static int 141 pfctl_do_ioctl(int dev, uint cmd, size_t size, nvlist_t **nvl) 142 { 143 struct pfioc_nv nv; 144 void *data; 145 size_t nvlen; 146 int ret; 147 148 data = nvlist_pack(*nvl, &nvlen); 149 if (nvlen > size) 150 size = nvlen; 151 152 retry: 153 nv.data = malloc(size); 154 if (nv.data == NULL) { 155 ret = ENOMEM; 156 goto out; 157 } 158 159 memcpy(nv.data, data, nvlen); 160 161 nv.len = nvlen; 162 nv.size = size; 163 164 ret = ioctl(dev, cmd, &nv); 165 if (ret == -1 && errno == ENOSPC) { 166 size *= 2; 167 free(nv.data); 168 goto retry; 169 } 170 171 nvlist_destroy(*nvl); 172 *nvl = NULL; 173 174 if (ret == 0) { 175 *nvl = nvlist_unpack(nv.data, nv.len, 0); 176 if (*nvl == NULL) { 177 ret = EIO; 178 goto out; 179 } 180 } else { 181 ret = errno; 182 } 183 184 out: 185 free(data); 186 free(nv.data); 187 188 return (ret); 189 } 190 191 static void 192 pf_nvuint_8_array(const nvlist_t *nvl, const char *name, size_t maxelems, 193 uint8_t *numbers, size_t *nelems) 194 { 195 const uint64_t *tmp; 196 size_t elems; 197 198 tmp = nvlist_get_number_array(nvl, name, &elems); 199 assert(elems <= maxelems); 200 201 for (size_t i = 0; i < elems; i++) 202 numbers[i] = tmp[i]; 203 204 if (nelems) 205 *nelems = elems; 206 } 207 208 static void 209 pf_nvuint_16_array(const nvlist_t *nvl, const char *name, size_t maxelems, 210 uint16_t *numbers, size_t *nelems) 211 { 212 const uint64_t *tmp; 213 size_t elems; 214 215 tmp = nvlist_get_number_array(nvl, name, &elems); 216 assert(elems <= maxelems); 217 218 for (size_t i = 0; i < elems; i++) 219 numbers[i] = tmp[i]; 220 221 if (nelems) 222 *nelems = elems; 223 } 224 225 static void 226 pf_nvuint_32_array(const nvlist_t *nvl, const char *name, size_t maxelems, 227 uint32_t *numbers, size_t *nelems) 228 { 229 const uint64_t *tmp; 230 size_t elems; 231 232 tmp = nvlist_get_number_array(nvl, name, &elems); 233 234 for (size_t i = 0; i < elems && i < maxelems; i++) 235 numbers[i] = tmp[i]; 236 237 if (nelems) 238 *nelems = elems; 239 } 240 241 static void 242 pf_nvuint_64_array(const nvlist_t *nvl, const char *name, size_t maxelems, 243 uint64_t *numbers, size_t *nelems) 244 { 245 const uint64_t *tmp; 246 size_t elems; 247 248 tmp = nvlist_get_number_array(nvl, name, &elems); 249 assert(elems <= maxelems); 250 251 for (size_t i = 0; i < elems; i++) 252 numbers[i] = tmp[i]; 253 254 if (nelems) 255 *nelems = elems; 256 } 257 258 int 259 pfctl_startstop(struct pfctl_handle *h, int start) 260 { 261 return (pfctl_do_netlink_cmd(h, start ? PFNL_CMD_START : PFNL_CMD_STOP)); 262 } 263 264 static void 265 _pfctl_get_status_counters(const nvlist_t *nvl, 266 struct pfctl_status_counters *counters) 267 { 268 const uint64_t *ids, *counts; 269 const char *const *names; 270 size_t id_len, counter_len, names_len; 271 272 ids = nvlist_get_number_array(nvl, "ids", &id_len); 273 counts = nvlist_get_number_array(nvl, "counters", &counter_len); 274 names = nvlist_get_string_array(nvl, "names", &names_len); 275 assert(id_len == counter_len); 276 assert(counter_len == names_len); 277 278 TAILQ_INIT(counters); 279 280 for (size_t i = 0; i < id_len; i++) { 281 struct pfctl_status_counter *c; 282 283 c = malloc(sizeof(*c)); 284 if (c == NULL) 285 continue; 286 287 c->id = ids[i]; 288 c->counter = counts[i]; 289 c->name = strdup(names[i]); 290 291 TAILQ_INSERT_TAIL(counters, c, entry); 292 } 293 } 294 295 #define _OUT(_field) offsetof(struct pfctl_status_counter, _field) 296 static const struct snl_attr_parser ap_counter[] = { 297 { .type = PF_C_COUNTER, .off = _OUT(counter), .cb = snl_attr_get_uint64 }, 298 { .type = PF_C_NAME, .off = _OUT(name), .cb = snl_attr_get_string }, 299 { .type = PF_C_ID, .off = _OUT(id), .cb = snl_attr_get_uint32 }, 300 }; 301 SNL_DECLARE_ATTR_PARSER(counter_parser, ap_counter); 302 #undef _OUT 303 304 static bool 305 snl_attr_get_counters(struct snl_state *ss, struct nlattr *nla, 306 const void *arg __unused, void *target) 307 { 308 struct pfctl_status_counter counter = {}; 309 struct pfctl_status_counter *c; 310 bool error; 311 312 error = snl_parse_header(ss, NLA_DATA(nla), NLA_DATA_LEN(nla), &counter_parser, &counter); 313 if (! error) 314 return (error); 315 316 c = malloc(sizeof(*c)); 317 if (c == NULL) 318 return (false); 319 320 c->id = counter.id; 321 c->counter = counter.counter; 322 c->name = strdup(counter.name); 323 324 TAILQ_INSERT_TAIL((struct pfctl_status_counters *)target, c, entry); 325 326 return (error); 327 } 328 329 struct snl_uint64_array { 330 uint64_t *array; 331 size_t count; 332 size_t max; 333 }; 334 static bool 335 snl_attr_get_uint64_element(struct snl_state *ss, struct nlattr *nla, 336 const void *arg, void *target) 337 { 338 bool error; 339 uint64_t value; 340 struct snl_uint64_array *t = (struct snl_uint64_array *)target; 341 342 if (t->count >= t->max) 343 return (false); 344 345 error = snl_attr_get_uint64(ss, nla, arg, &value); 346 if (! error) 347 return (error); 348 349 t->array[t->count++] = value; 350 351 return (true); 352 } 353 354 static const struct snl_attr_parser ap_array[] = { 355 { .cb = snl_attr_get_uint64_element }, 356 }; 357 SNL_DECLARE_ATTR_PARSER(array_parser, ap_array); 358 static bool 359 snl_attr_get_uint64_array(struct snl_state *ss, struct nlattr *nla, 360 const void *arg, void *target) 361 { 362 struct snl_uint64_array a = { 363 .array = target, 364 .count = 0, 365 .max = (size_t)arg, 366 }; 367 bool error; 368 369 error = snl_parse_header(ss, NLA_DATA(nla), NLA_DATA_LEN(nla), &array_parser, &a); 370 if (! error) 371 return (error); 372 373 return (true); 374 } 375 376 #define _OUT(_field) offsetof(struct pfctl_status, _field) 377 static const struct snl_attr_parser ap_getstatus[] = { 378 { .type = PF_GS_IFNAME, .off = _OUT(ifname), .arg_u32 = IFNAMSIZ, .cb = snl_attr_copy_string }, 379 { .type = PF_GS_RUNNING, .off = _OUT(running), .cb = snl_attr_get_bool }, 380 { .type = PF_GS_SINCE, .off = _OUT(since), .cb = snl_attr_get_uint32 }, 381 { .type = PF_GS_DEBUG, .off = _OUT(debug), .cb = snl_attr_get_uint32 }, 382 { .type = PF_GS_HOSTID, .off = _OUT(hostid), .cb = snl_attr_get_uint32 }, 383 { .type = PF_GS_STATES, .off = _OUT(states), .cb = snl_attr_get_uint32 }, 384 { .type = PF_GS_SRC_NODES, .off = _OUT(src_nodes), .cb = snl_attr_get_uint32 }, 385 { .type = PF_GS_REASSEMBLE, .off = _OUT(reass), .cb = snl_attr_get_uint32 }, 386 { .type = PF_GS_SYNCOOKIES_ACTIVE, .off = _OUT(syncookies_active), .cb = snl_attr_get_uint32 }, 387 { .type = PF_GS_COUNTERS, .off = _OUT(counters), .cb = snl_attr_get_counters }, 388 { .type = PF_GS_LCOUNTERS, .off = _OUT(lcounters), .cb = snl_attr_get_counters }, 389 { .type = PF_GS_FCOUNTERS, .off = _OUT(fcounters), .cb = snl_attr_get_counters }, 390 { .type = PF_GS_SCOUNTERS, .off = _OUT(scounters), .cb = snl_attr_get_counters }, 391 { .type = PF_GS_CHKSUM, .off = _OUT(pf_chksum), .arg_u32 = PF_MD5_DIGEST_LENGTH, .cb = snl_attr_get_bytes }, 392 { .type = PF_GS_BCOUNTERS, .off = _OUT(bcounters), .arg_u32 = 2 * 2, .cb = snl_attr_get_uint64_array }, 393 { .type = PF_GS_PCOUNTERS, .off = _OUT(pcounters), .arg_u32 = 2 * 2 * 2, .cb = snl_attr_get_uint64_array }, 394 }; 395 SNL_DECLARE_PARSER(getstatus_parser, struct genlmsghdr, snl_f_p_empty, ap_getstatus); 396 #undef _OUT 397 398 struct pfctl_status * 399 pfctl_get_status_h(struct pfctl_handle *h __unused) 400 { 401 struct pfctl_status *status; 402 struct snl_errmsg_data e = {}; 403 struct nlmsghdr *hdr; 404 struct snl_writer nw; 405 uint32_t seq_id; 406 int family_id; 407 408 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME); 409 if (family_id == 0) 410 return (NULL); 411 412 snl_init_writer(&h->ss, &nw); 413 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GET_STATUS); 414 hdr->nlmsg_flags |= NLM_F_DUMP; 415 416 hdr = snl_finalize_msg(&nw); 417 if (hdr == NULL) { 418 return (NULL); 419 } 420 421 seq_id = hdr->nlmsg_seq; 422 if (! snl_send_message(&h->ss, hdr)) 423 return (NULL); 424 425 status = calloc(1, sizeof(*status)); 426 if (status == NULL) 427 return (NULL); 428 TAILQ_INIT(&status->counters); 429 TAILQ_INIT(&status->lcounters); 430 TAILQ_INIT(&status->fcounters); 431 TAILQ_INIT(&status->scounters); 432 433 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) { 434 if (! snl_parse_nlmsg(&h->ss, hdr, &getstatus_parser, status)) 435 continue; 436 } 437 438 return (status); 439 } 440 441 struct pfctl_status * 442 pfctl_get_status(int dev) 443 { 444 struct pfctl_status *status; 445 nvlist_t *nvl; 446 size_t len; 447 const void *chksum; 448 449 status = calloc(1, sizeof(*status)); 450 if (status == NULL) 451 return (NULL); 452 453 nvl = nvlist_create(0); 454 455 if (pfctl_do_ioctl(dev, DIOCGETSTATUSNV, 4096, &nvl)) { 456 nvlist_destroy(nvl); 457 free(status); 458 return (NULL); 459 } 460 461 status->running = nvlist_get_bool(nvl, "running"); 462 status->since = nvlist_get_number(nvl, "since"); 463 status->debug = nvlist_get_number(nvl, "debug"); 464 status->hostid = ntohl(nvlist_get_number(nvl, "hostid")); 465 status->states = nvlist_get_number(nvl, "states"); 466 status->src_nodes = nvlist_get_number(nvl, "src_nodes"); 467 status->syncookies_active = nvlist_get_bool(nvl, "syncookies_active"); 468 status->reass = nvlist_get_number(nvl, "reass"); 469 470 strlcpy(status->ifname, nvlist_get_string(nvl, "ifname"), 471 IFNAMSIZ); 472 chksum = nvlist_get_binary(nvl, "chksum", &len); 473 assert(len == PF_MD5_DIGEST_LENGTH); 474 memcpy(status->pf_chksum, chksum, len); 475 476 _pfctl_get_status_counters(nvlist_get_nvlist(nvl, "counters"), 477 &status->counters); 478 _pfctl_get_status_counters(nvlist_get_nvlist(nvl, "lcounters"), 479 &status->lcounters); 480 _pfctl_get_status_counters(nvlist_get_nvlist(nvl, "fcounters"), 481 &status->fcounters); 482 _pfctl_get_status_counters(nvlist_get_nvlist(nvl, "scounters"), 483 &status->scounters); 484 485 pf_nvuint_64_array(nvl, "pcounters", 2 * 2 * 2, 486 (uint64_t *)status->pcounters, NULL); 487 pf_nvuint_64_array(nvl, "bcounters", 2 * 2, 488 (uint64_t *)status->bcounters, NULL); 489 490 nvlist_destroy(nvl); 491 492 return (status); 493 } 494 int 495 pfctl_clear_status(struct pfctl_handle *h) 496 { 497 return (pfctl_do_netlink_cmd(h, PFNL_CMD_CLEAR_STATUS)); 498 } 499 500 static uint64_t 501 _pfctl_status_counter(struct pfctl_status_counters *counters, uint64_t id) 502 { 503 struct pfctl_status_counter *c; 504 505 TAILQ_FOREACH(c, counters, entry) { 506 if (c->id == id) 507 return (c->counter); 508 } 509 510 return (0); 511 } 512 513 uint64_t 514 pfctl_status_counter(struct pfctl_status *status, int id) 515 { 516 return (_pfctl_status_counter(&status->counters, id)); 517 } 518 519 uint64_t 520 pfctl_status_lcounter(struct pfctl_status *status, int id) 521 { 522 return (_pfctl_status_counter(&status->lcounters, id)); 523 } 524 525 uint64_t 526 pfctl_status_fcounter(struct pfctl_status *status, int id) 527 { 528 return (_pfctl_status_counter(&status->fcounters, id)); 529 } 530 531 uint64_t 532 pfctl_status_scounter(struct pfctl_status *status, int id) 533 { 534 return (_pfctl_status_counter(&status->scounters, id)); 535 } 536 537 void 538 pfctl_free_status(struct pfctl_status *status) 539 { 540 struct pfctl_status_counter *c, *tmp; 541 542 if (status == NULL) 543 return; 544 545 TAILQ_FOREACH_SAFE(c, &status->counters, entry, tmp) { 546 free(c->name); 547 free(c); 548 } 549 TAILQ_FOREACH_SAFE(c, &status->lcounters, entry, tmp) { 550 free(c->name); 551 free(c); 552 } 553 TAILQ_FOREACH_SAFE(c, &status->fcounters, entry, tmp) { 554 free(c->name); 555 free(c); 556 } 557 TAILQ_FOREACH_SAFE(c, &status->scounters, entry, tmp) { 558 free(c->name); 559 free(c); 560 } 561 562 free(status); 563 } 564 565 static void 566 pfctl_nv_add_addr(nvlist_t *nvparent, const char *name, 567 const struct pf_addr *addr) 568 { 569 nvlist_t *nvl = nvlist_create(0); 570 571 nvlist_add_binary(nvl, "addr", addr, sizeof(*addr)); 572 573 nvlist_add_nvlist(nvparent, name, nvl); 574 nvlist_destroy(nvl); 575 } 576 577 static void 578 pf_nvaddr_to_addr(const nvlist_t *nvl, struct pf_addr *addr) 579 { 580 size_t len; 581 const void *data; 582 583 data = nvlist_get_binary(nvl, "addr", &len); 584 assert(len == sizeof(struct pf_addr)); 585 memcpy(addr, data, len); 586 } 587 588 static void 589 pfctl_nv_add_addr_wrap(nvlist_t *nvparent, const char *name, 590 const struct pf_addr_wrap *addr) 591 { 592 nvlist_t *nvl = nvlist_create(0); 593 594 nvlist_add_number(nvl, "type", addr->type); 595 nvlist_add_number(nvl, "iflags", addr->iflags); 596 if (addr->type == PF_ADDR_DYNIFTL) 597 nvlist_add_string(nvl, "ifname", addr->v.ifname); 598 if (addr->type == PF_ADDR_TABLE) 599 nvlist_add_string(nvl, "tblname", addr->v.tblname); 600 pfctl_nv_add_addr(nvl, "addr", &addr->v.a.addr); 601 pfctl_nv_add_addr(nvl, "mask", &addr->v.a.mask); 602 603 nvlist_add_nvlist(nvparent, name, nvl); 604 nvlist_destroy(nvl); 605 } 606 607 static void 608 pf_nvaddr_wrap_to_addr_wrap(const nvlist_t *nvl, struct pf_addr_wrap *addr) 609 { 610 bzero(addr, sizeof(*addr)); 611 612 addr->type = nvlist_get_number(nvl, "type"); 613 addr->iflags = nvlist_get_number(nvl, "iflags"); 614 if (addr->type == PF_ADDR_DYNIFTL) { 615 strlcpy(addr->v.ifname, nvlist_get_string(nvl, "ifname"), 616 IFNAMSIZ); 617 addr->p.dyncnt = nvlist_get_number(nvl, "dyncnt"); 618 } 619 if (addr->type == PF_ADDR_TABLE) { 620 strlcpy(addr->v.tblname, nvlist_get_string(nvl, "tblname"), 621 PF_TABLE_NAME_SIZE); 622 addr->p.tblcnt = nvlist_get_number(nvl, "tblcnt"); 623 } 624 625 pf_nvaddr_to_addr(nvlist_get_nvlist(nvl, "addr"), &addr->v.a.addr); 626 pf_nvaddr_to_addr(nvlist_get_nvlist(nvl, "mask"), &addr->v.a.mask); 627 } 628 629 static void 630 pfctl_nv_add_rule_addr(nvlist_t *nvparent, const char *name, 631 const struct pf_rule_addr *addr) 632 { 633 uint64_t ports[2]; 634 nvlist_t *nvl = nvlist_create(0); 635 636 pfctl_nv_add_addr_wrap(nvl, "addr", &addr->addr); 637 ports[0] = addr->port[0]; 638 ports[1] = addr->port[1]; 639 nvlist_add_number_array(nvl, "port", ports, 2); 640 nvlist_add_number(nvl, "neg", addr->neg); 641 nvlist_add_number(nvl, "port_op", addr->port_op); 642 643 nvlist_add_nvlist(nvparent, name, nvl); 644 nvlist_destroy(nvl); 645 } 646 647 static void 648 pf_nvrule_addr_to_rule_addr(const nvlist_t *nvl, struct pf_rule_addr *addr) 649 { 650 pf_nvaddr_wrap_to_addr_wrap(nvlist_get_nvlist(nvl, "addr"), &addr->addr); 651 652 pf_nvuint_16_array(nvl, "port", 2, addr->port, NULL); 653 addr->neg = nvlist_get_number(nvl, "neg"); 654 addr->port_op = nvlist_get_number(nvl, "port_op"); 655 } 656 657 static void 658 pf_nvmape_to_mape(const nvlist_t *nvl, struct pf_mape_portset *mape) 659 { 660 mape->offset = nvlist_get_number(nvl, "offset"); 661 mape->psidlen = nvlist_get_number(nvl, "psidlen"); 662 mape->psid = nvlist_get_number(nvl, "psid"); 663 } 664 665 static void 666 pf_nvpool_to_pool(const nvlist_t *nvl, struct pfctl_pool *pool) 667 { 668 size_t len; 669 const void *data; 670 671 data = nvlist_get_binary(nvl, "key", &len); 672 assert(len == sizeof(pool->key)); 673 memcpy(&pool->key, data, len); 674 675 pf_nvaddr_to_addr(nvlist_get_nvlist(nvl, "counter"), &pool->counter); 676 677 pool->tblidx = nvlist_get_number(nvl, "tblidx"); 678 pf_nvuint_16_array(nvl, "proxy_port", 2, pool->proxy_port, NULL); 679 pool->opts = nvlist_get_number(nvl, "opts"); 680 681 if (nvlist_exists_nvlist(nvl, "mape")) 682 pf_nvmape_to_mape(nvlist_get_nvlist(nvl, "mape"), &pool->mape); 683 } 684 685 static void 686 pf_nvrule_uid_to_rule_uid(const nvlist_t *nvl, struct pf_rule_uid *uid) 687 { 688 pf_nvuint_32_array(nvl, "uid", 2, uid->uid, NULL); 689 uid->op = nvlist_get_number(nvl, "op"); 690 } 691 692 static void 693 pf_nvdivert_to_divert(const nvlist_t *nvl, struct pfctl_rule *rule) 694 { 695 pf_nvaddr_to_addr(nvlist_get_nvlist(nvl, "addr"), &rule->divert.addr); 696 rule->divert.port = nvlist_get_number(nvl, "port"); 697 } 698 699 static void 700 pf_nvrule_to_rule(const nvlist_t *nvl, struct pfctl_rule *rule) 701 { 702 const uint64_t *skip; 703 const char *const *labels; 704 size_t skipcount, labelcount; 705 706 rule->nr = nvlist_get_number(nvl, "nr"); 707 708 pf_nvrule_addr_to_rule_addr(nvlist_get_nvlist(nvl, "src"), &rule->src); 709 pf_nvrule_addr_to_rule_addr(nvlist_get_nvlist(nvl, "dst"), &rule->dst); 710 711 skip = nvlist_get_number_array(nvl, "skip", &skipcount); 712 assert(skip); 713 assert(skipcount == PF_SKIP_COUNT); 714 for (int i = 0; i < PF_SKIP_COUNT; i++) 715 rule->skip[i].nr = skip[i]; 716 717 labels = nvlist_get_string_array(nvl, "labels", &labelcount); 718 assert(labelcount <= PF_RULE_MAX_LABEL_COUNT); 719 for (size_t i = 0; i < labelcount; i++) 720 strlcpy(rule->label[i], labels[i], PF_RULE_LABEL_SIZE); 721 rule->ridentifier = nvlist_get_number(nvl, "ridentifier"); 722 strlcpy(rule->ifname, nvlist_get_string(nvl, "ifname"), IFNAMSIZ); 723 strlcpy(rule->qname, nvlist_get_string(nvl, "qname"), PF_QNAME_SIZE); 724 strlcpy(rule->pqname, nvlist_get_string(nvl, "pqname"), PF_QNAME_SIZE); 725 strlcpy(rule->tagname, nvlist_get_string(nvl, "tagname"), 726 PF_TAG_NAME_SIZE); 727 strlcpy(rule->match_tagname, nvlist_get_string(nvl, "match_tagname"), 728 PF_TAG_NAME_SIZE); 729 730 strlcpy(rule->overload_tblname, nvlist_get_string(nvl, "overload_tblname"), 731 PF_TABLE_NAME_SIZE); 732 733 pf_nvpool_to_pool(nvlist_get_nvlist(nvl, "rpool"), &rule->rdr); 734 735 rule->evaluations = nvlist_get_number(nvl, "evaluations"); 736 pf_nvuint_64_array(nvl, "packets", 2, rule->packets, NULL); 737 pf_nvuint_64_array(nvl, "bytes", 2, rule->bytes, NULL); 738 739 if (nvlist_exists_number(nvl, "timestamp")) { 740 rule->last_active_timestamp = nvlist_get_number(nvl, "timestamp"); 741 } 742 743 rule->os_fingerprint = nvlist_get_number(nvl, "os_fingerprint"); 744 745 rule->rtableid = nvlist_get_number(nvl, "rtableid"); 746 pf_nvuint_32_array(nvl, "timeout", PFTM_MAX, rule->timeout, NULL); 747 rule->max_states = nvlist_get_number(nvl, "max_states"); 748 rule->max_src_nodes = nvlist_get_number(nvl, "max_src_nodes"); 749 rule->max_src_states = nvlist_get_number(nvl, "max_src_states"); 750 rule->max_src_conn = nvlist_get_number(nvl, "max_src_conn"); 751 rule->max_src_conn_rate.limit = 752 nvlist_get_number(nvl, "max_src_conn_rate.limit"); 753 rule->max_src_conn_rate.seconds = 754 nvlist_get_number(nvl, "max_src_conn_rate.seconds"); 755 rule->qid = nvlist_get_number(nvl, "qid"); 756 rule->pqid = nvlist_get_number(nvl, "pqid"); 757 rule->dnpipe = nvlist_get_number(nvl, "dnpipe"); 758 rule->dnrpipe = nvlist_get_number(nvl, "dnrpipe"); 759 rule->free_flags = nvlist_get_number(nvl, "dnflags"); 760 rule->prob = nvlist_get_number(nvl, "prob"); 761 rule->cuid = nvlist_get_number(nvl, "cuid"); 762 rule->cpid = nvlist_get_number(nvl, "cpid"); 763 764 rule->return_icmp = nvlist_get_number(nvl, "return_icmp"); 765 rule->return_icmp6 = nvlist_get_number(nvl, "return_icmp6"); 766 rule->max_mss = nvlist_get_number(nvl, "max_mss"); 767 rule->scrub_flags = nvlist_get_number(nvl, "scrub_flags"); 768 769 pf_nvrule_uid_to_rule_uid(nvlist_get_nvlist(nvl, "uid"), &rule->uid); 770 pf_nvrule_uid_to_rule_uid(nvlist_get_nvlist(nvl, "gid"), 771 (struct pf_rule_uid *)&rule->gid); 772 773 rule->rule_flag = nvlist_get_number(nvl, "rule_flag"); 774 rule->action = nvlist_get_number(nvl, "action"); 775 rule->direction = nvlist_get_number(nvl, "direction"); 776 rule->log = nvlist_get_number(nvl, "log"); 777 rule->logif = nvlist_get_number(nvl, "logif"); 778 rule->quick = nvlist_get_number(nvl, "quick"); 779 rule->ifnot = nvlist_get_number(nvl, "ifnot"); 780 rule->match_tag_not = nvlist_get_number(nvl, "match_tag_not"); 781 rule->natpass = nvlist_get_number(nvl, "natpass"); 782 783 rule->keep_state = nvlist_get_number(nvl, "keep_state"); 784 rule->af = nvlist_get_number(nvl, "af"); 785 rule->proto = nvlist_get_number(nvl, "proto"); 786 rule->type = nvlist_get_number(nvl, "type"); 787 rule->code = nvlist_get_number(nvl, "code"); 788 rule->flags = nvlist_get_number(nvl, "flags"); 789 rule->flagset = nvlist_get_number(nvl, "flagset"); 790 rule->min_ttl = nvlist_get_number(nvl, "min_ttl"); 791 rule->allow_opts = nvlist_get_number(nvl, "allow_opts"); 792 rule->rt = nvlist_get_number(nvl, "rt"); 793 rule->return_ttl = nvlist_get_number(nvl, "return_ttl"); 794 rule->tos = nvlist_get_number(nvl, "tos"); 795 rule->set_tos = nvlist_get_number(nvl, "set_tos"); 796 rule->anchor_relative = nvlist_get_number(nvl, "anchor_relative"); 797 rule->anchor_wildcard = nvlist_get_number(nvl, "anchor_wildcard"); 798 799 rule->flush = nvlist_get_number(nvl, "flush"); 800 rule->prio = nvlist_get_number(nvl, "prio"); 801 pf_nvuint_8_array(nvl, "set_prio", 2, rule->set_prio, NULL); 802 803 pf_nvdivert_to_divert(nvlist_get_nvlist(nvl, "divert"), rule); 804 805 rule->states_cur = nvlist_get_number(nvl, "states_cur"); 806 rule->states_tot = nvlist_get_number(nvl, "states_tot"); 807 rule->src_nodes = nvlist_get_number(nvl, "src_nodes"); 808 } 809 810 static void 811 pfctl_nveth_addr_to_eth_addr(const nvlist_t *nvl, struct pfctl_eth_addr *addr) 812 { 813 static const u_int8_t EMPTY_MAC[ETHER_ADDR_LEN] = { 0 }; 814 size_t len; 815 const void *data; 816 817 data = nvlist_get_binary(nvl, "addr", &len); 818 assert(len == sizeof(addr->addr)); 819 memcpy(addr->addr, data, sizeof(addr->addr)); 820 821 data = nvlist_get_binary(nvl, "mask", &len); 822 assert(len == sizeof(addr->mask)); 823 memcpy(addr->mask, data, sizeof(addr->mask)); 824 825 addr->neg = nvlist_get_bool(nvl, "neg"); 826 827 /* To make checks for 'is this address set?' easier. */ 828 addr->isset = memcmp(addr->addr, EMPTY_MAC, ETHER_ADDR_LEN) != 0; 829 } 830 831 static nvlist_t * 832 pfctl_eth_addr_to_nveth_addr(const struct pfctl_eth_addr *addr) 833 { 834 nvlist_t *nvl; 835 836 nvl = nvlist_create(0); 837 if (nvl == NULL) 838 return (NULL); 839 840 nvlist_add_bool(nvl, "neg", addr->neg); 841 nvlist_add_binary(nvl, "addr", &addr->addr, ETHER_ADDR_LEN); 842 nvlist_add_binary(nvl, "mask", &addr->mask, ETHER_ADDR_LEN); 843 844 return (nvl); 845 } 846 847 static void 848 pfctl_nveth_rule_to_eth_rule(const nvlist_t *nvl, struct pfctl_eth_rule *rule) 849 { 850 const char *const *labels; 851 size_t labelcount, i; 852 853 rule->nr = nvlist_get_number(nvl, "nr"); 854 rule->quick = nvlist_get_bool(nvl, "quick"); 855 strlcpy(rule->ifname, nvlist_get_string(nvl, "ifname"), IFNAMSIZ); 856 rule->ifnot = nvlist_get_bool(nvl, "ifnot"); 857 rule->direction = nvlist_get_number(nvl, "direction"); 858 rule->proto = nvlist_get_number(nvl, "proto"); 859 strlcpy(rule->match_tagname, nvlist_get_string(nvl, "match_tagname"), 860 PF_TAG_NAME_SIZE); 861 rule->match_tag = nvlist_get_number(nvl, "match_tag"); 862 rule->match_tag_not = nvlist_get_bool(nvl, "match_tag_not"); 863 864 labels = nvlist_get_string_array(nvl, "labels", &labelcount); 865 assert(labelcount <= PF_RULE_MAX_LABEL_COUNT); 866 for (i = 0; i < labelcount; i++) 867 strlcpy(rule->label[i], labels[i], PF_RULE_LABEL_SIZE); 868 rule->ridentifier = nvlist_get_number(nvl, "ridentifier"); 869 870 pfctl_nveth_addr_to_eth_addr(nvlist_get_nvlist(nvl, "src"), 871 &rule->src); 872 pfctl_nveth_addr_to_eth_addr(nvlist_get_nvlist(nvl, "dst"), 873 &rule->dst); 874 875 pf_nvrule_addr_to_rule_addr(nvlist_get_nvlist(nvl, "ipsrc"), 876 &rule->ipsrc); 877 pf_nvrule_addr_to_rule_addr(nvlist_get_nvlist(nvl, "ipdst"), 878 &rule->ipdst); 879 880 rule->evaluations = nvlist_get_number(nvl, "evaluations"); 881 rule->packets[0] = nvlist_get_number(nvl, "packets-in"); 882 rule->packets[1] = nvlist_get_number(nvl, "packets-out"); 883 rule->bytes[0] = nvlist_get_number(nvl, "bytes-in"); 884 rule->bytes[1] = nvlist_get_number(nvl, "bytes-out"); 885 886 if (nvlist_exists_number(nvl, "timestamp")) { 887 rule->last_active_timestamp = nvlist_get_number(nvl, "timestamp"); 888 } 889 890 strlcpy(rule->qname, nvlist_get_string(nvl, "qname"), PF_QNAME_SIZE); 891 strlcpy(rule->tagname, nvlist_get_string(nvl, "tagname"), 892 PF_TAG_NAME_SIZE); 893 894 rule->dnpipe = nvlist_get_number(nvl, "dnpipe"); 895 rule->dnflags = nvlist_get_number(nvl, "dnflags"); 896 897 rule->anchor_relative = nvlist_get_number(nvl, "anchor_relative"); 898 rule->anchor_wildcard = nvlist_get_number(nvl, "anchor_wildcard"); 899 900 strlcpy(rule->bridge_to, nvlist_get_string(nvl, "bridge_to"), 901 IFNAMSIZ); 902 903 rule->action = nvlist_get_number(nvl, "action"); 904 } 905 906 int 907 pfctl_get_eth_rulesets_info(int dev, struct pfctl_eth_rulesets_info *ri, 908 const char *path) 909 { 910 nvlist_t *nvl; 911 int ret; 912 913 bzero(ri, sizeof(*ri)); 914 915 nvl = nvlist_create(0); 916 nvlist_add_string(nvl, "path", path); 917 918 if ((ret = pfctl_do_ioctl(dev, DIOCGETETHRULESETS, 256, &nvl)) != 0) 919 goto out; 920 921 ri->nr = nvlist_get_number(nvl, "nr"); 922 923 out: 924 nvlist_destroy(nvl); 925 return (ret); 926 } 927 928 int 929 pfctl_get_eth_ruleset(int dev, const char *path, int nr, 930 struct pfctl_eth_ruleset_info *ri) 931 { 932 nvlist_t *nvl; 933 int ret; 934 935 bzero(ri, sizeof(*ri)); 936 937 nvl = nvlist_create(0); 938 nvlist_add_string(nvl, "path", path); 939 nvlist_add_number(nvl, "nr", nr); 940 941 if ((ret = pfctl_do_ioctl(dev, DIOCGETETHRULESET, 1024, &nvl)) != 0) 942 goto out; 943 944 ri->nr = nvlist_get_number(nvl, "nr"); 945 strlcpy(ri->path, nvlist_get_string(nvl, "path"), MAXPATHLEN); 946 strlcpy(ri->name, nvlist_get_string(nvl, "name"), 947 PF_ANCHOR_NAME_SIZE); 948 949 out: 950 nvlist_destroy(nvl); 951 return (ret); 952 } 953 954 int 955 pfctl_get_eth_rules_info(int dev, struct pfctl_eth_rules_info *rules, 956 const char *path) 957 { 958 nvlist_t *nvl; 959 int ret; 960 961 bzero(rules, sizeof(*rules)); 962 963 nvl = nvlist_create(0); 964 nvlist_add_string(nvl, "anchor", path); 965 966 if ((ret = pfctl_do_ioctl(dev, DIOCGETETHRULES, 1024, &nvl)) != 0) 967 goto out; 968 969 rules->nr = nvlist_get_number(nvl, "nr"); 970 rules->ticket = nvlist_get_number(nvl, "ticket"); 971 972 out: 973 nvlist_destroy(nvl); 974 return (ret); 975 } 976 977 int 978 pfctl_get_eth_rule(int dev, uint32_t nr, uint32_t ticket, 979 const char *path, struct pfctl_eth_rule *rule, bool clear, 980 char *anchor_call) 981 { 982 nvlist_t *nvl; 983 int ret; 984 985 nvl = nvlist_create(0); 986 987 nvlist_add_string(nvl, "anchor", path); 988 nvlist_add_number(nvl, "ticket", ticket); 989 nvlist_add_number(nvl, "nr", nr); 990 nvlist_add_bool(nvl, "clear", clear); 991 992 if ((ret = pfctl_do_ioctl(dev, DIOCGETETHRULE, 4096, &nvl)) != 0) 993 goto out; 994 995 pfctl_nveth_rule_to_eth_rule(nvl, rule); 996 997 if (anchor_call) 998 strlcpy(anchor_call, nvlist_get_string(nvl, "anchor_call"), 999 MAXPATHLEN); 1000 1001 out: 1002 nvlist_destroy(nvl); 1003 return (ret); 1004 } 1005 1006 int 1007 pfctl_add_eth_rule(int dev, const struct pfctl_eth_rule *r, const char *anchor, 1008 const char *anchor_call, uint32_t ticket) 1009 { 1010 struct pfioc_nv nv; 1011 nvlist_t *nvl, *addr; 1012 void *packed; 1013 int error = 0; 1014 size_t labelcount, size; 1015 1016 nvl = nvlist_create(0); 1017 1018 nvlist_add_number(nvl, "ticket", ticket); 1019 nvlist_add_string(nvl, "anchor", anchor); 1020 nvlist_add_string(nvl, "anchor_call", anchor_call); 1021 1022 nvlist_add_number(nvl, "nr", r->nr); 1023 nvlist_add_bool(nvl, "quick", r->quick); 1024 nvlist_add_string(nvl, "ifname", r->ifname); 1025 nvlist_add_bool(nvl, "ifnot", r->ifnot); 1026 nvlist_add_number(nvl, "direction", r->direction); 1027 nvlist_add_number(nvl, "proto", r->proto); 1028 nvlist_add_string(nvl, "match_tagname", r->match_tagname); 1029 nvlist_add_bool(nvl, "match_tag_not", r->match_tag_not); 1030 1031 addr = pfctl_eth_addr_to_nveth_addr(&r->src); 1032 if (addr == NULL) { 1033 nvlist_destroy(nvl); 1034 return (ENOMEM); 1035 } 1036 nvlist_add_nvlist(nvl, "src", addr); 1037 nvlist_destroy(addr); 1038 1039 addr = pfctl_eth_addr_to_nveth_addr(&r->dst); 1040 if (addr == NULL) { 1041 nvlist_destroy(nvl); 1042 return (ENOMEM); 1043 } 1044 nvlist_add_nvlist(nvl, "dst", addr); 1045 nvlist_destroy(addr); 1046 1047 pfctl_nv_add_rule_addr(nvl, "ipsrc", &r->ipsrc); 1048 pfctl_nv_add_rule_addr(nvl, "ipdst", &r->ipdst); 1049 1050 labelcount = 0; 1051 while (labelcount < PF_RULE_MAX_LABEL_COUNT && 1052 r->label[labelcount][0] != 0) { 1053 nvlist_append_string_array(nvl, "labels", 1054 r->label[labelcount]); 1055 labelcount++; 1056 } 1057 nvlist_add_number(nvl, "ridentifier", r->ridentifier); 1058 1059 nvlist_add_string(nvl, "qname", r->qname); 1060 nvlist_add_string(nvl, "tagname", r->tagname); 1061 nvlist_add_number(nvl, "dnpipe", r->dnpipe); 1062 nvlist_add_number(nvl, "dnflags", r->dnflags); 1063 1064 nvlist_add_string(nvl, "bridge_to", r->bridge_to); 1065 1066 nvlist_add_number(nvl, "action", r->action); 1067 1068 packed = nvlist_pack(nvl, &size); 1069 if (packed == NULL) { 1070 nvlist_destroy(nvl); 1071 return (ENOMEM); 1072 } 1073 1074 nv.len = size; 1075 nv.size = size; 1076 nv.data = packed; 1077 1078 if (ioctl(dev, DIOCADDETHRULE, &nv) != 0) 1079 error = errno; 1080 1081 free(packed); 1082 nvlist_destroy(nvl); 1083 1084 return (error); 1085 } 1086 1087 static void 1088 snl_add_msg_attr_addr_wrap(struct snl_writer *nw, uint32_t type, const struct pf_addr_wrap *addr) 1089 { 1090 int off; 1091 1092 off = snl_add_msg_attr_nested(nw, type); 1093 1094 snl_add_msg_attr_ip6(nw, PF_AT_ADDR, &addr->v.a.addr.v6); 1095 snl_add_msg_attr_ip6(nw, PF_AT_MASK, &addr->v.a.mask.v6); 1096 1097 if (addr->type == PF_ADDR_DYNIFTL) 1098 snl_add_msg_attr_string(nw, PF_AT_IFNAME, addr->v.ifname); 1099 if (addr->type == PF_ADDR_TABLE) 1100 snl_add_msg_attr_string(nw, PF_AT_TABLENAME, addr->v.tblname); 1101 snl_add_msg_attr_u8(nw, PF_AT_TYPE, addr->type); 1102 snl_add_msg_attr_u8(nw, PF_AT_IFLAGS, addr->iflags); 1103 1104 snl_end_attr_nested(nw, off); 1105 } 1106 1107 static void 1108 snl_add_msg_attr_pool_addr(struct snl_writer *nw, uint32_t type, const struct pf_pooladdr *pa) 1109 { 1110 int off; 1111 1112 off = snl_add_msg_attr_nested(nw, type); 1113 1114 snl_add_msg_attr_string(nw, PF_PA_IFNAME, pa->ifname); 1115 snl_add_msg_attr_addr_wrap(nw, PF_PA_ADDR, &pa->addr); 1116 1117 snl_end_attr_nested(nw, off); 1118 } 1119 1120 static void 1121 snl_add_msg_attr_rule_addr(struct snl_writer *nw, uint32_t type, const struct pf_rule_addr *addr) 1122 { 1123 int off; 1124 1125 off = snl_add_msg_attr_nested(nw, type); 1126 1127 snl_add_msg_attr_addr_wrap(nw, PF_RAT_ADDR, &addr->addr); 1128 snl_add_msg_attr_u16(nw, PF_RAT_SRC_PORT, addr->port[0]); 1129 snl_add_msg_attr_u16(nw, PF_RAT_DST_PORT, addr->port[1]); 1130 snl_add_msg_attr_u8(nw, PF_RAT_NEG, addr->neg); 1131 snl_add_msg_attr_u8(nw, PF_RAT_OP, addr->port_op); 1132 1133 snl_end_attr_nested(nw, off); 1134 } 1135 1136 static void 1137 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]) 1138 { 1139 int off, i = 0; 1140 1141 off = snl_add_msg_attr_nested(nw, type); 1142 1143 while (i < PF_RULE_MAX_LABEL_COUNT && 1144 labels[i][0] != 0) { 1145 snl_add_msg_attr_string(nw, PF_LT_LABEL, labels[i]); 1146 i++; 1147 } 1148 1149 snl_end_attr_nested(nw, off); 1150 } 1151 1152 static void 1153 snl_add_msg_attr_mape(struct snl_writer *nw, uint32_t type, const struct pf_mape_portset *me) 1154 { 1155 int off; 1156 1157 off = snl_add_msg_attr_nested(nw, type); 1158 1159 snl_add_msg_attr_u8(nw, PF_MET_OFFSET, me->offset); 1160 snl_add_msg_attr_u8(nw, PF_MET_PSID_LEN, me->psidlen); 1161 snl_add_msg_attr_u16(nw, PF_MET_PSID, me->psid); 1162 1163 snl_end_attr_nested(nw, off); 1164 } 1165 1166 static void 1167 snl_add_msg_attr_rpool(struct snl_writer *nw, uint32_t type, const struct pfctl_pool *pool) 1168 { 1169 int off; 1170 1171 off = snl_add_msg_attr_nested(nw, type); 1172 1173 snl_add_msg_attr(nw, PF_PT_KEY, sizeof(pool->key), &pool->key); 1174 snl_add_msg_attr_ip6(nw, PF_PT_COUNTER, &pool->counter.v6); 1175 snl_add_msg_attr_u32(nw, PF_PT_TBLIDX, pool->tblidx); 1176 snl_add_msg_attr_u16(nw, PF_PT_PROXY_SRC_PORT, pool->proxy_port[0]); 1177 snl_add_msg_attr_u16(nw, PF_PT_PROXY_DST_PORT, pool->proxy_port[1]); 1178 snl_add_msg_attr_u8(nw, PF_PT_OPTS, pool->opts); 1179 snl_add_msg_attr_mape(nw, PF_PT_MAPE, &pool->mape); 1180 1181 snl_end_attr_nested(nw, off); 1182 } 1183 1184 static void 1185 snl_add_msg_attr_timeouts(struct snl_writer *nw, uint32_t type, const uint32_t *timeouts) 1186 { 1187 int off; 1188 1189 off = snl_add_msg_attr_nested(nw, type); 1190 1191 for (int i = 0; i < PFTM_MAX; i++) 1192 snl_add_msg_attr_u32(nw, PF_TT_TIMEOUT, timeouts[i]); 1193 1194 snl_end_attr_nested(nw, off); 1195 } 1196 1197 static void 1198 snl_add_msg_attr_uid(struct snl_writer *nw, uint32_t type, const struct pf_rule_uid *uid) 1199 { 1200 int off; 1201 1202 off = snl_add_msg_attr_nested(nw, type); 1203 1204 snl_add_msg_attr_u32(nw, PF_RUT_UID_LOW, uid->uid[0]); 1205 snl_add_msg_attr_u32(nw, PF_RUT_UID_HIGH, uid->uid[1]); 1206 snl_add_msg_attr_u8(nw, PF_RUT_OP, uid->op); 1207 1208 snl_end_attr_nested(nw, off); 1209 } 1210 1211 static void 1212 snl_add_msg_attr_pf_rule(struct snl_writer *nw, uint32_t type, const struct pfctl_rule *r) 1213 { 1214 int off; 1215 1216 off = snl_add_msg_attr_nested(nw, type); 1217 1218 snl_add_msg_attr_rule_addr(nw, PF_RT_SRC, &r->src); 1219 snl_add_msg_attr_rule_addr(nw, PF_RT_DST, &r->dst); 1220 snl_add_msg_attr_rule_labels(nw, PF_RT_LABELS, r->label); 1221 snl_add_msg_attr_u32(nw, PF_RT_RIDENTIFIER, r->ridentifier); 1222 snl_add_msg_attr_string(nw, PF_RT_IFNAME, r->ifname); 1223 snl_add_msg_attr_string(nw, PF_RT_QNAME, r->qname); 1224 snl_add_msg_attr_string(nw, PF_RT_PQNAME, r->pqname); 1225 snl_add_msg_attr_string(nw, PF_RT_TAGNAME, r->tagname); 1226 snl_add_msg_attr_string(nw, PF_RT_MATCH_TAGNAME, r->match_tagname); 1227 snl_add_msg_attr_string(nw, PF_RT_OVERLOAD_TBLNAME, r->overload_tblname); 1228 snl_add_msg_attr_rpool(nw, PF_RT_RPOOL_RDR, &r->rdr); 1229 snl_add_msg_attr_rpool(nw, PF_RT_RPOOL_NAT, &r->nat); 1230 snl_add_msg_attr_u32(nw, PF_RT_OS_FINGERPRINT, r->os_fingerprint); 1231 snl_add_msg_attr_u32(nw, PF_RT_RTABLEID, r->rtableid); 1232 snl_add_msg_attr_timeouts(nw, PF_RT_TIMEOUT, r->timeout); 1233 snl_add_msg_attr_u32(nw, PF_RT_MAX_STATES, r->max_states); 1234 snl_add_msg_attr_u32(nw, PF_RT_MAX_SRC_NODES, r->max_src_nodes); 1235 snl_add_msg_attr_u32(nw, PF_RT_MAX_SRC_STATES, r->max_src_states); 1236 snl_add_msg_attr_u32(nw, PF_RT_MAX_SRC_CONN, r->max_src_conn); 1237 snl_add_msg_attr_u32(nw, PF_RT_MAX_SRC_CONN_RATE_LIMIT, r->max_src_conn_rate.limit); 1238 snl_add_msg_attr_u32(nw, PF_RT_MAX_SRC_CONN_RATE_SECS, r->max_src_conn_rate.seconds); 1239 1240 snl_add_msg_attr_u16(nw, PF_RT_DNPIPE, r->dnpipe); 1241 snl_add_msg_attr_u16(nw, PF_RT_DNRPIPE, r->dnrpipe); 1242 snl_add_msg_attr_u32(nw, PF_RT_DNFLAGS, r->free_flags); 1243 1244 snl_add_msg_attr_u32(nw, PF_RT_NR, r->nr); 1245 snl_add_msg_attr_u32(nw, PF_RT_PROB, r->prob); 1246 snl_add_msg_attr_u32(nw, PF_RT_CUID, r->cuid); 1247 snl_add_msg_attr_u32(nw, PF_RT_CPID, r->cpid); 1248 1249 snl_add_msg_attr_u16(nw, PF_RT_RETURN_ICMP, r->return_icmp); 1250 snl_add_msg_attr_u16(nw, PF_RT_RETURN_ICMP6, r->return_icmp6); 1251 snl_add_msg_attr_u16(nw, PF_RT_MAX_MSS, r->max_mss); 1252 snl_add_msg_attr_u16(nw, PF_RT_SCRUB_FLAGS, r->scrub_flags); 1253 1254 snl_add_msg_attr_uid(nw, PF_RT_UID, &r->uid); 1255 snl_add_msg_attr_uid(nw, PF_RT_GID, (const struct pf_rule_uid *)&r->gid); 1256 snl_add_msg_attr_string(nw, PF_RT_RCV_IFNAME, r->rcv_ifname); 1257 1258 snl_add_msg_attr_u32(nw, PF_RT_RULE_FLAG, r->rule_flag); 1259 snl_add_msg_attr_u8(nw, PF_RT_ACTION, r->action); 1260 snl_add_msg_attr_u8(nw, PF_RT_DIRECTION, r->direction); 1261 snl_add_msg_attr_u8(nw, PF_RT_LOG, r->log); 1262 snl_add_msg_attr_u8(nw, PF_RT_LOGIF, r->logif); 1263 snl_add_msg_attr_u8(nw, PF_RT_QUICK, r->quick); 1264 snl_add_msg_attr_u8(nw, PF_RT_IF_NOT, r->ifnot); 1265 snl_add_msg_attr_u8(nw, PF_RT_MATCH_TAG_NOT, r->match_tag_not); 1266 snl_add_msg_attr_u8(nw, PF_RT_NATPASS, r->natpass); 1267 snl_add_msg_attr_u8(nw, PF_RT_KEEP_STATE, r->keep_state); 1268 snl_add_msg_attr_u8(nw, PF_RT_AF, r->af); 1269 snl_add_msg_attr_u8(nw, PF_RT_PROTO, r->proto); 1270 snl_add_msg_attr_u8(nw, PF_RT_TYPE, r->type); 1271 snl_add_msg_attr_u8(nw, PF_RT_CODE, r->code); 1272 snl_add_msg_attr_u8(nw, PF_RT_FLAGS, r->flags); 1273 snl_add_msg_attr_u8(nw, PF_RT_FLAGSET, r->flagset); 1274 snl_add_msg_attr_u8(nw, PF_RT_MIN_TTL, r->min_ttl); 1275 snl_add_msg_attr_u8(nw, PF_RT_ALLOW_OPTS, r->allow_opts); 1276 snl_add_msg_attr_u8(nw, PF_RT_RT, r->rt); 1277 snl_add_msg_attr_u8(nw, PF_RT_RETURN_TTL, r->return_ttl); 1278 snl_add_msg_attr_u8(nw, PF_RT_TOS, r->tos); 1279 snl_add_msg_attr_u8(nw, PF_RT_SET_TOS, r->set_tos); 1280 1281 snl_add_msg_attr_u8(nw, PF_RT_ANCHOR_RELATIVE, r->anchor_relative); 1282 snl_add_msg_attr_u8(nw, PF_RT_ANCHOR_WILDCARD, r->anchor_wildcard); 1283 snl_add_msg_attr_u8(nw, PF_RT_FLUSH, r->flush); 1284 snl_add_msg_attr_u8(nw, PF_RT_PRIO, r->prio); 1285 snl_add_msg_attr_u8(nw, PF_RT_SET_PRIO, r->set_prio[0]); 1286 snl_add_msg_attr_u8(nw, PF_RT_SET_PRIO_REPLY, r->set_prio[1]); 1287 snl_add_msg_attr_u8(nw, PF_RT_NAF, r->naf); 1288 1289 snl_add_msg_attr_ip6(nw, PF_RT_DIVERT_ADDRESS, &r->divert.addr.v6); 1290 snl_add_msg_attr_u16(nw, PF_RT_DIVERT_PORT, r->divert.port); 1291 1292 snl_end_attr_nested(nw, off); 1293 } 1294 1295 int 1296 pfctl_add_rule(int dev __unused, const struct pfctl_rule *r, const char *anchor, 1297 const char *anchor_call, uint32_t ticket, uint32_t pool_ticket) 1298 { 1299 struct pfctl_handle *h; 1300 int ret; 1301 1302 h = pfctl_open(PF_DEVICE); 1303 if (h == NULL) 1304 return (ENODEV); 1305 1306 ret = pfctl_add_rule_h(h, r, anchor, anchor_call, ticket, pool_ticket); 1307 1308 pfctl_close(h); 1309 1310 return (ret); 1311 } 1312 1313 int 1314 pfctl_add_rule_h(struct pfctl_handle *h, const struct pfctl_rule *r, 1315 const char *anchor, const char *anchor_call, uint32_t ticket, 1316 uint32_t pool_ticket) 1317 { 1318 struct snl_writer nw; 1319 struct snl_errmsg_data e = {}; 1320 struct nlmsghdr *hdr; 1321 uint32_t seq_id; 1322 int family_id; 1323 1324 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME); 1325 if (family_id == 0) 1326 return (ENOTSUP); 1327 1328 snl_init_writer(&h->ss, &nw); 1329 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_ADDRULE); 1330 hdr->nlmsg_flags |= NLM_F_DUMP; 1331 snl_add_msg_attr_u32(&nw, PF_ART_TICKET, ticket); 1332 snl_add_msg_attr_u32(&nw, PF_ART_POOL_TICKET, pool_ticket); 1333 snl_add_msg_attr_string(&nw, PF_ART_ANCHOR, anchor); 1334 snl_add_msg_attr_string(&nw, PF_ART_ANCHOR_CALL, anchor_call); 1335 1336 snl_add_msg_attr_pf_rule(&nw, PF_ART_RULE, r); 1337 1338 if ((hdr = snl_finalize_msg(&nw)) == NULL) 1339 return (ENXIO); 1340 1341 seq_id = hdr->nlmsg_seq; 1342 1343 if (! snl_send_message(&h->ss, hdr)) 1344 return (ENXIO); 1345 1346 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) { 1347 } 1348 1349 return (e.error); 1350 } 1351 1352 #define _IN(_field) offsetof(struct genlmsghdr, _field) 1353 #define _OUT(_field) offsetof(struct pfctl_rules_info, _field) 1354 static struct snl_attr_parser ap_getrules[] = { 1355 { .type = PF_GR_NR, .off = _OUT(nr), .cb = snl_attr_get_uint32 }, 1356 { .type = PF_GR_TICKET, .off = _OUT(ticket), .cb = snl_attr_get_uint32 }, 1357 }; 1358 #undef _IN 1359 #undef _OUT 1360 SNL_DECLARE_PARSER(getrules_parser, struct genlmsghdr, snl_f_p_empty, ap_getrules); 1361 1362 int 1363 pfctl_get_rules_info_h(struct pfctl_handle *h, struct pfctl_rules_info *rules, uint32_t ruleset, 1364 const char *path) 1365 { 1366 struct snl_errmsg_data e = {}; 1367 struct nlmsghdr *hdr; 1368 struct snl_writer nw; 1369 uint32_t seq_id; 1370 int family_id; 1371 1372 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME); 1373 if (family_id == 0) 1374 return (ENOTSUP); 1375 1376 snl_init_writer(&h->ss, &nw); 1377 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GETRULES); 1378 hdr->nlmsg_flags |= NLM_F_DUMP; 1379 1380 snl_add_msg_attr_string(&nw, PF_GR_ANCHOR, path); 1381 snl_add_msg_attr_u8(&nw, PF_GR_ACTION, ruleset); 1382 1383 hdr = snl_finalize_msg(&nw); 1384 if (hdr == NULL) 1385 return (ENOMEM); 1386 1387 seq_id = hdr->nlmsg_seq; 1388 if (! snl_send_message(&h->ss, hdr)) 1389 return (ENXIO); 1390 1391 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) { 1392 if (! snl_parse_nlmsg(&h->ss, hdr, &getrules_parser, rules)) 1393 continue; 1394 } 1395 1396 return (e.error); 1397 } 1398 1399 int 1400 pfctl_get_rules_info(int dev __unused, struct pfctl_rules_info *rules, uint32_t ruleset, 1401 const char *path) 1402 { 1403 struct pfctl_handle *h; 1404 int error; 1405 1406 h = pfctl_open(PF_DEVICE); 1407 if (h == NULL) 1408 return (ENOTSUP); 1409 error = pfctl_get_rules_info_h(h, rules, ruleset, path); 1410 pfctl_close(h); 1411 1412 return (error); 1413 } 1414 1415 int 1416 pfctl_get_rule_h(struct pfctl_handle *h, uint32_t nr, uint32_t ticket, const char *anchor, 1417 uint32_t ruleset, struct pfctl_rule *rule, char *anchor_call) 1418 { 1419 return (pfctl_get_clear_rule_h(h, nr, ticket, anchor, ruleset, rule, 1420 anchor_call, false)); 1421 } 1422 1423 int 1424 pfctl_get_rule(int dev, uint32_t nr, uint32_t ticket, const char *anchor, 1425 uint32_t ruleset, struct pfctl_rule *rule, char *anchor_call) 1426 { 1427 return (pfctl_get_clear_rule(dev, nr, ticket, anchor, ruleset, rule, 1428 anchor_call, false)); 1429 } 1430 1431 #define _OUT(_field) offsetof(struct pf_addr_wrap, _field) 1432 static const struct snl_attr_parser ap_addr_wrap[] = { 1433 { .type = PF_AT_ADDR, .off = _OUT(v.a.addr), .cb = snl_attr_get_in6_addr }, 1434 { .type = PF_AT_MASK, .off = _OUT(v.a.mask), .cb = snl_attr_get_in6_addr }, 1435 { .type = PF_AT_IFNAME, .off = _OUT(v.ifname), .arg = (void *)IFNAMSIZ,.cb = snl_attr_copy_string }, 1436 { .type = PF_AT_TABLENAME, .off = _OUT(v.tblname), .arg = (void *)PF_TABLE_NAME_SIZE, .cb = snl_attr_copy_string }, 1437 { .type = PF_AT_TYPE, .off = _OUT(type), .cb = snl_attr_get_uint8 }, 1438 { .type = PF_AT_IFLAGS, .off = _OUT(iflags), .cb = snl_attr_get_uint8 }, 1439 { .type = PF_AT_TBLCNT, .off = _OUT(p.tblcnt), .cb = snl_attr_get_uint32 }, 1440 { .type = PF_AT_DYNCNT, .off = _OUT(p.dyncnt), .cb = snl_attr_get_uint32 }, 1441 }; 1442 SNL_DECLARE_ATTR_PARSER(addr_wrap_parser, ap_addr_wrap); 1443 #undef _OUT 1444 1445 #define _OUT(_field) offsetof(struct pf_rule_addr, _field) 1446 static struct snl_attr_parser ap_rule_addr[] = { 1447 { .type = PF_RAT_ADDR, .off = _OUT(addr), .arg = &addr_wrap_parser, .cb = snl_attr_get_nested }, 1448 { .type = PF_RAT_SRC_PORT, .off = _OUT(port[0]), .cb = snl_attr_get_uint16 }, 1449 { .type = PF_RAT_DST_PORT, .off = _OUT(port[1]), .cb = snl_attr_get_uint16 }, 1450 { .type = PF_RAT_NEG, .off = _OUT(neg), .cb = snl_attr_get_uint8 }, 1451 { .type = PF_RAT_OP, .off = _OUT(port_op), .cb = snl_attr_get_uint8 }, 1452 }; 1453 #undef _OUT 1454 SNL_DECLARE_ATTR_PARSER(rule_addr_parser, ap_rule_addr); 1455 1456 struct snl_parsed_labels 1457 { 1458 char labels[PF_RULE_MAX_LABEL_COUNT][PF_RULE_LABEL_SIZE]; 1459 uint32_t i; 1460 }; 1461 1462 static bool 1463 snl_attr_get_pf_rule_labels(struct snl_state *ss, struct nlattr *nla, 1464 const void *arg __unused, void *target) 1465 { 1466 struct snl_parsed_labels *l = (struct snl_parsed_labels *)target; 1467 bool ret; 1468 1469 if (l->i >= PF_RULE_MAX_LABEL_COUNT) 1470 return (E2BIG); 1471 1472 ret = snl_attr_copy_string(ss, nla, (void *)PF_RULE_LABEL_SIZE, 1473 l->labels[l->i]); 1474 if (ret) 1475 l->i++; 1476 1477 return (ret); 1478 } 1479 1480 #define _OUT(_field) offsetof(struct nl_parsed_labels, _field) 1481 static const struct snl_attr_parser ap_labels[] = { 1482 { .type = PF_LT_LABEL, .off = 0, .cb = snl_attr_get_pf_rule_labels }, 1483 }; 1484 SNL_DECLARE_ATTR_PARSER(rule_labels_parser, ap_labels); 1485 #undef _OUT 1486 1487 static bool 1488 snl_attr_get_nested_pf_rule_labels(struct snl_state *ss, struct nlattr *nla, 1489 const void *arg __unused, void *target) 1490 { 1491 struct snl_parsed_labels parsed_labels = { }; 1492 bool error; 1493 1494 /* Assumes target points to the beginning of the structure */ 1495 error = snl_parse_header(ss, NLA_DATA(nla), NLA_DATA_LEN(nla), &rule_labels_parser, &parsed_labels); 1496 if (! error) 1497 return (error); 1498 1499 memcpy(target, parsed_labels.labels, sizeof(parsed_labels.labels)); 1500 1501 return (true); 1502 } 1503 1504 #define _OUT(_field) offsetof(struct pf_mape_portset, _field) 1505 static const struct snl_attr_parser ap_mape_portset[] = { 1506 { .type = PF_MET_OFFSET, .off = _OUT(offset), .cb = snl_attr_get_uint8 }, 1507 { .type = PF_MET_PSID_LEN, .off = _OUT(psidlen), .cb = snl_attr_get_uint8 }, 1508 {. type = PF_MET_PSID, .off = _OUT(psid), .cb = snl_attr_get_uint16 }, 1509 }; 1510 SNL_DECLARE_ATTR_PARSER(mape_portset_parser, ap_mape_portset); 1511 #undef _OUT 1512 1513 #define _OUT(_field) offsetof(struct pfctl_pool, _field) 1514 static const struct snl_attr_parser ap_pool[] = { 1515 { .type = PF_PT_KEY, .off = _OUT(key), .arg = (void *)sizeof(struct pf_poolhashkey), .cb = snl_attr_get_bytes }, 1516 { .type = PF_PT_COUNTER, .off = _OUT(counter), .cb = snl_attr_get_in6_addr }, 1517 { .type = PF_PT_TBLIDX, .off = _OUT(tblidx), .cb = snl_attr_get_uint32 }, 1518 { .type = PF_PT_PROXY_SRC_PORT, .off = _OUT(proxy_port[0]), .cb = snl_attr_get_uint16 }, 1519 { .type = PF_PT_PROXY_DST_PORT, .off = _OUT(proxy_port[1]), .cb = snl_attr_get_uint16 }, 1520 { .type = PF_PT_OPTS, .off = _OUT(opts), .cb = snl_attr_get_uint8 }, 1521 { .type = PF_PT_MAPE, .off = _OUT(mape), .arg = &mape_portset_parser, .cb = snl_attr_get_nested }, 1522 }; 1523 SNL_DECLARE_ATTR_PARSER(pool_parser, ap_pool); 1524 #undef _OUT 1525 1526 struct nl_parsed_timeouts 1527 { 1528 uint32_t timeouts[PFTM_MAX]; 1529 uint32_t i; 1530 }; 1531 1532 static bool 1533 snl_attr_get_pf_timeout(struct snl_state *ss, struct nlattr *nla, 1534 const void *arg __unused, void *target) 1535 { 1536 struct nl_parsed_timeouts *t = (struct nl_parsed_timeouts *)target; 1537 bool ret; 1538 1539 if (t->i >= PFTM_MAX) 1540 return (E2BIG); 1541 1542 ret = snl_attr_get_uint32(ss, nla, NULL, &t->timeouts[t->i]); 1543 if (ret) 1544 t->i++; 1545 1546 return (ret); 1547 } 1548 1549 #define _OUT(_field) offsetof(struct nl_parsed_timeout, _field) 1550 static const struct snl_attr_parser ap_timeouts[] = { 1551 { .type = PF_TT_TIMEOUT, .off = 0, .cb = snl_attr_get_pf_timeout }, 1552 }; 1553 SNL_DECLARE_ATTR_PARSER(timeout_parser, ap_timeouts); 1554 #undef _OUT 1555 1556 static bool 1557 snl_attr_get_nested_timeouts(struct snl_state *ss, struct nlattr *nla, 1558 const void *arg __unused, void *target) 1559 { 1560 struct nl_parsed_timeouts parsed_timeouts = { }; 1561 bool error; 1562 1563 /* Assumes target points to the beginning of the structure */ 1564 error = snl_parse_header(ss, NLA_DATA(nla), NLA_DATA_LEN(nla), &timeout_parser, &parsed_timeouts); 1565 if (! error) 1566 return (error); 1567 1568 memcpy(target, parsed_timeouts.timeouts, sizeof(parsed_timeouts.timeouts)); 1569 1570 return (true); 1571 } 1572 1573 #define _OUT(_field) offsetof(struct pf_rule_uid, _field) 1574 static const struct snl_attr_parser ap_rule_uid[] = { 1575 { .type = PF_RUT_UID_LOW, .off = _OUT(uid[0]), .cb = snl_attr_get_uint32 }, 1576 { .type = PF_RUT_UID_HIGH, .off = _OUT(uid[1]), .cb = snl_attr_get_uint32 }, 1577 { .type = PF_RUT_OP, .off = _OUT(op), .cb = snl_attr_get_uint8 }, 1578 }; 1579 SNL_DECLARE_ATTR_PARSER(rule_uid_parser, ap_rule_uid); 1580 #undef _OUT 1581 1582 struct pfctl_nl_get_rule { 1583 struct pfctl_rule r; 1584 char anchor_call[MAXPATHLEN]; 1585 }; 1586 #define _OUT(_field) offsetof(struct pfctl_nl_get_rule, _field) 1587 static struct snl_attr_parser ap_getrule[] = { 1588 { .type = PF_RT_SRC, .off = _OUT(r.src), .arg = &rule_addr_parser,.cb = snl_attr_get_nested }, 1589 { .type = PF_RT_DST, .off = _OUT(r.dst), .arg = &rule_addr_parser,.cb = snl_attr_get_nested }, 1590 { .type = PF_RT_RIDENTIFIER, .off = _OUT(r.ridentifier), .cb = snl_attr_get_uint32 }, 1591 { .type = PF_RT_LABELS, .off = _OUT(r.label), .arg = &rule_labels_parser,.cb = snl_attr_get_nested_pf_rule_labels }, 1592 { .type = PF_RT_IFNAME, .off = _OUT(r.ifname), .arg = (void *)IFNAMSIZ, .cb = snl_attr_copy_string }, 1593 { .type = PF_RT_QNAME, .off = _OUT(r.qname), .arg = (void *)PF_QNAME_SIZE, .cb = snl_attr_copy_string }, 1594 { .type = PF_RT_PQNAME, .off = _OUT(r.pqname), .arg = (void *)PF_QNAME_SIZE, .cb = snl_attr_copy_string }, 1595 { .type = PF_RT_TAGNAME, .off = _OUT(r.tagname), .arg = (void *)PF_TAG_NAME_SIZE, .cb = snl_attr_copy_string }, 1596 { .type = PF_RT_MATCH_TAGNAME, .off = _OUT(r.match_tagname), .arg = (void *)PF_TAG_NAME_SIZE, .cb = snl_attr_copy_string }, 1597 { .type = PF_RT_OVERLOAD_TBLNAME, .off = _OUT(r.overload_tblname), .arg = (void *)PF_TABLE_NAME_SIZE, .cb = snl_attr_copy_string }, 1598 { .type = PF_RT_RPOOL_RDR, .off = _OUT(r.rdr), .arg = &pool_parser, .cb = snl_attr_get_nested }, 1599 { .type = PF_RT_OS_FINGERPRINT, .off = _OUT(r.os_fingerprint), .cb = snl_attr_get_uint32 }, 1600 { .type = PF_RT_RTABLEID, .off = _OUT(r.rtableid), .cb = snl_attr_get_uint32 }, 1601 { .type = PF_RT_TIMEOUT, .off = _OUT(r.timeout), .arg = &timeout_parser, .cb = snl_attr_get_nested_timeouts }, 1602 { .type = PF_RT_MAX_STATES, .off = _OUT(r.max_states), .cb = snl_attr_get_uint32 }, 1603 { .type = PF_RT_MAX_SRC_NODES, .off = _OUT(r.max_src_nodes), .cb = snl_attr_get_uint32 }, 1604 { .type = PF_RT_MAX_SRC_STATES, .off = _OUT(r.max_src_states), .cb = snl_attr_get_uint32 }, 1605 { .type = PF_RT_MAX_SRC_CONN_RATE_LIMIT, .off = _OUT(r.max_src_conn_rate.limit), .cb = snl_attr_get_uint32 }, 1606 { .type = PF_RT_MAX_SRC_CONN_RATE_SECS, .off = _OUT(r.max_src_conn_rate.seconds), .cb = snl_attr_get_uint32 }, 1607 { .type = PF_RT_DNPIPE, .off = _OUT(r.dnpipe), .cb = snl_attr_get_uint16 }, 1608 { .type = PF_RT_DNRPIPE, .off = _OUT(r.dnrpipe), .cb = snl_attr_get_uint16 }, 1609 { .type = PF_RT_DNFLAGS, .off = _OUT(r.free_flags), .cb = snl_attr_get_uint32 }, 1610 { .type = PF_RT_NR, .off = _OUT(r.nr), .cb = snl_attr_get_uint32 }, 1611 { .type = PF_RT_PROB, .off = _OUT(r.prob), .cb = snl_attr_get_uint32 }, 1612 { .type = PF_RT_CUID, .off = _OUT(r.cuid), .cb = snl_attr_get_uint32 }, 1613 {. type = PF_RT_CPID, .off = _OUT(r.cpid), .cb = snl_attr_get_uint32 }, 1614 { .type = PF_RT_RETURN_ICMP, .off = _OUT(r.return_icmp), .cb = snl_attr_get_uint16 }, 1615 { .type = PF_RT_RETURN_ICMP6, .off = _OUT(r.return_icmp6), .cb = snl_attr_get_uint16 }, 1616 { .type = PF_RT_MAX_MSS, .off = _OUT(r.max_mss), .cb = snl_attr_get_uint16 }, 1617 { .type = PF_RT_SCRUB_FLAGS, .off = _OUT(r.scrub_flags), .cb = snl_attr_get_uint16 }, 1618 { .type = PF_RT_UID, .off = _OUT(r.uid), .arg = &rule_uid_parser, .cb = snl_attr_get_nested }, 1619 { .type = PF_RT_GID, .off = _OUT(r.gid), .arg = &rule_uid_parser, .cb = snl_attr_get_nested }, 1620 { .type = PF_RT_RULE_FLAG, .off = _OUT(r.rule_flag), .cb = snl_attr_get_uint32 }, 1621 { .type = PF_RT_ACTION, .off = _OUT(r.action), .cb = snl_attr_get_uint8 }, 1622 { .type = PF_RT_DIRECTION, .off = _OUT(r.direction), .cb = snl_attr_get_uint8 }, 1623 { .type = PF_RT_LOG, .off = _OUT(r.log), .cb = snl_attr_get_uint8 }, 1624 { .type = PF_RT_LOGIF, .off = _OUT(r.logif), .cb = snl_attr_get_uint8 }, 1625 { .type = PF_RT_QUICK, .off = _OUT(r.quick), .cb = snl_attr_get_uint8 }, 1626 { .type = PF_RT_IF_NOT, .off = _OUT(r.ifnot), .cb = snl_attr_get_uint8 }, 1627 { .type = PF_RT_MATCH_TAG_NOT, .off = _OUT(r.match_tag_not), .cb = snl_attr_get_uint8 }, 1628 { .type = PF_RT_NATPASS, .off = _OUT(r.natpass), .cb = snl_attr_get_uint8 }, 1629 { .type = PF_RT_KEEP_STATE, .off = _OUT(r.keep_state), .cb = snl_attr_get_uint8 }, 1630 { .type = PF_RT_AF, .off = _OUT(r.af), .cb = snl_attr_get_uint8 }, 1631 { .type = PF_RT_PROTO, .off = _OUT(r.proto), .cb = snl_attr_get_uint8 }, 1632 { .type = PF_RT_TYPE, .off = _OUT(r.type), .cb = snl_attr_get_uint8 }, 1633 { .type = PF_RT_CODE, .off = _OUT(r.code), .cb = snl_attr_get_uint8 }, 1634 { .type = PF_RT_FLAGS, .off = _OUT(r.flags), .cb = snl_attr_get_uint8 }, 1635 { .type = PF_RT_FLAGSET, .off = _OUT(r.flagset), .cb = snl_attr_get_uint8 }, 1636 { .type = PF_RT_MIN_TTL, .off = _OUT(r.min_ttl), .cb = snl_attr_get_uint8 }, 1637 { .type = PF_RT_ALLOW_OPTS, .off = _OUT(r.allow_opts), .cb = snl_attr_get_uint8 }, 1638 { .type = PF_RT_RT, .off = _OUT(r.rt), .cb = snl_attr_get_uint8 }, 1639 { .type = PF_RT_RETURN_TTL, .off = _OUT(r.return_ttl), .cb = snl_attr_get_uint8 }, 1640 { .type = PF_RT_TOS, .off = _OUT(r.tos), .cb = snl_attr_get_uint8 }, 1641 { .type = PF_RT_SET_TOS, .off = _OUT(r.set_tos), .cb = snl_attr_get_uint8 }, 1642 { .type = PF_RT_ANCHOR_RELATIVE, .off = _OUT(r.anchor_relative), .cb = snl_attr_get_uint8 }, 1643 { .type = PF_RT_ANCHOR_WILDCARD, .off = _OUT(r.anchor_wildcard), .cb = snl_attr_get_uint8 }, 1644 { .type = PF_RT_FLUSH, .off = _OUT(r.flush), .cb = snl_attr_get_uint8 }, 1645 { .type = PF_RT_PRIO, .off = _OUT(r.prio), .cb = snl_attr_get_uint8 }, 1646 { .type = PF_RT_SET_PRIO, .off = _OUT(r.set_prio[0]), .cb = snl_attr_get_uint8 }, 1647 { .type = PF_RT_SET_PRIO_REPLY, .off = _OUT(r.set_prio[1]), .cb = snl_attr_get_uint8 }, 1648 { .type = PF_RT_DIVERT_ADDRESS, .off = _OUT(r.divert.addr), .cb = snl_attr_get_in6_addr }, 1649 { .type = PF_RT_DIVERT_PORT, .off = _OUT(r.divert.port), .cb = snl_attr_get_uint16 }, 1650 { .type = PF_RT_PACKETS_IN, .off = _OUT(r.packets[0]), .cb = snl_attr_get_uint64 }, 1651 { .type = PF_RT_PACKETS_OUT, .off = _OUT(r.packets[1]), .cb = snl_attr_get_uint64 }, 1652 { .type = PF_RT_BYTES_IN, .off = _OUT(r.bytes[0]), .cb = snl_attr_get_uint64 }, 1653 { .type = PF_RT_BYTES_OUT, .off = _OUT(r.bytes[1]), .cb = snl_attr_get_uint64 }, 1654 { .type = PF_RT_EVALUATIONS, .off = _OUT(r.evaluations), .cb = snl_attr_get_uint64 }, 1655 { .type = PF_RT_TIMESTAMP, .off = _OUT(r.last_active_timestamp), .cb = snl_attr_get_uint64 }, 1656 { .type = PF_RT_STATES_CUR, .off = _OUT(r.states_cur), .cb = snl_attr_get_uint64 }, 1657 { .type = PF_RT_STATES_TOTAL, .off = _OUT(r.states_tot), .cb = snl_attr_get_uint64 }, 1658 { .type = PF_RT_SRC_NODES, .off = _OUT(r.src_nodes), .cb = snl_attr_get_uint64 }, 1659 { .type = PF_RT_ANCHOR_CALL, .off = _OUT(anchor_call), .arg = (void*)MAXPATHLEN, .cb = snl_attr_copy_string }, 1660 { .type = PF_RT_RCV_IFNAME, .off = _OUT(r.rcv_ifname), .arg = (void*)IFNAMSIZ, .cb = snl_attr_copy_string }, 1661 { .type = PF_RT_MAX_SRC_CONN, .off = _OUT(r.max_src_conn), .cb = snl_attr_get_uint32 }, 1662 { .type = PF_RT_RPOOL_NAT, .off = _OUT(r.nat), .arg = &pool_parser, .cb = snl_attr_get_nested }, 1663 { .type = PF_RT_NAF, .off = _OUT(r.naf), .cb = snl_attr_get_uint8 }, 1664 }; 1665 #undef _OUT 1666 SNL_DECLARE_PARSER(getrule_parser, struct genlmsghdr, snl_f_p_empty, ap_getrule); 1667 1668 int 1669 pfctl_get_clear_rule_h(struct pfctl_handle *h, uint32_t nr, uint32_t ticket, 1670 const char *anchor, uint32_t ruleset, struct pfctl_rule *rule, 1671 char *anchor_call, bool clear) 1672 { 1673 struct pfctl_nl_get_rule attrs = {}; 1674 struct snl_errmsg_data e = {}; 1675 struct nlmsghdr *hdr; 1676 struct snl_writer nw; 1677 uint32_t seq_id; 1678 int family_id; 1679 1680 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME); 1681 if (family_id == 0) 1682 return (ENOTSUP); 1683 1684 snl_init_writer(&h->ss, &nw); 1685 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GETRULE); 1686 hdr->nlmsg_flags |= NLM_F_DUMP; 1687 1688 snl_add_msg_attr_string(&nw, PF_GR_ANCHOR, anchor); 1689 snl_add_msg_attr_u8(&nw, PF_GR_ACTION, ruleset); 1690 snl_add_msg_attr_u32(&nw, PF_GR_NR, nr); 1691 snl_add_msg_attr_u32(&nw, PF_GR_TICKET, ticket); 1692 snl_add_msg_attr_u8(&nw, PF_GR_CLEAR, clear); 1693 1694 hdr = snl_finalize_msg(&nw); 1695 if (hdr == NULL) 1696 return (ENOMEM); 1697 1698 seq_id = hdr->nlmsg_seq; 1699 if (! snl_send_message(&h->ss, hdr)) 1700 return (ENXIO); 1701 1702 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) { 1703 if (! snl_parse_nlmsg(&h->ss, hdr, &getrule_parser, &attrs)) 1704 continue; 1705 } 1706 1707 memcpy(rule, &attrs.r, sizeof(attrs.r)); 1708 strlcpy(anchor_call, attrs.anchor_call, MAXPATHLEN); 1709 1710 return (e.error); 1711 } 1712 1713 int 1714 pfctl_get_clear_rule(int dev, uint32_t nr, uint32_t ticket, 1715 const char *anchor, uint32_t ruleset, struct pfctl_rule *rule, 1716 char *anchor_call, bool clear) 1717 { 1718 nvlist_t *nvl; 1719 int ret; 1720 1721 nvl = nvlist_create(0); 1722 if (nvl == 0) 1723 return (ENOMEM); 1724 1725 nvlist_add_number(nvl, "nr", nr); 1726 nvlist_add_number(nvl, "ticket", ticket); 1727 nvlist_add_string(nvl, "anchor", anchor); 1728 nvlist_add_number(nvl, "ruleset", ruleset); 1729 1730 if (clear) 1731 nvlist_add_bool(nvl, "clear_counter", true); 1732 1733 if ((ret = pfctl_do_ioctl(dev, DIOCGETRULENV, 8192, &nvl)) != 0) 1734 goto out; 1735 1736 pf_nvrule_to_rule(nvlist_get_nvlist(nvl, "rule"), rule); 1737 1738 if (anchor_call) 1739 strlcpy(anchor_call, nvlist_get_string(nvl, "anchor_call"), 1740 MAXPATHLEN); 1741 1742 out: 1743 nvlist_destroy(nvl); 1744 return (ret); 1745 } 1746 1747 int 1748 pfctl_set_keepcounters(int dev, bool keep) 1749 { 1750 struct pfioc_nv nv; 1751 nvlist_t *nvl; 1752 int ret; 1753 1754 nvl = nvlist_create(0); 1755 1756 nvlist_add_bool(nvl, "keep_counters", keep); 1757 1758 nv.data = nvlist_pack(nvl, &nv.len); 1759 nv.size = nv.len; 1760 1761 nvlist_destroy(nvl); 1762 1763 ret = ioctl(dev, DIOCKEEPCOUNTERS, &nv); 1764 1765 free(nv.data); 1766 return (ret); 1767 } 1768 1769 struct pfctl_creator { 1770 uint32_t id; 1771 }; 1772 #define _IN(_field) offsetof(struct genlmsghdr, _field) 1773 #define _OUT(_field) offsetof(struct pfctl_creator, _field) 1774 static struct snl_attr_parser ap_creators[] = { 1775 { .type = PF_ST_CREATORID, .off = _OUT(id), .cb = snl_attr_get_uint32 }, 1776 }; 1777 #undef _IN 1778 #undef _OUT 1779 SNL_DECLARE_PARSER(creator_parser, struct genlmsghdr, snl_f_p_empty, ap_creators); 1780 1781 static int 1782 pfctl_get_creators_nl(struct snl_state *ss, uint32_t *creators, size_t *len) 1783 { 1784 1785 int family_id = snl_get_genl_family(ss, PFNL_FAMILY_NAME); 1786 size_t i = 0; 1787 1788 struct nlmsghdr *hdr; 1789 struct snl_writer nw; 1790 1791 if (family_id == 0) 1792 return (ENOTSUP); 1793 1794 snl_init_writer(ss, &nw); 1795 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GETCREATORS); 1796 hdr->nlmsg_flags |= NLM_F_DUMP; 1797 hdr = snl_finalize_msg(&nw); 1798 if (hdr == NULL) 1799 return (ENOMEM); 1800 uint32_t seq_id = hdr->nlmsg_seq; 1801 1802 snl_send_message(ss, hdr); 1803 1804 struct snl_errmsg_data e = {}; 1805 while ((hdr = snl_read_reply_multi(ss, seq_id, &e)) != NULL) { 1806 struct pfctl_creator c; 1807 bzero(&c, sizeof(c)); 1808 1809 if (!snl_parse_nlmsg(ss, hdr, &creator_parser, &c)) 1810 continue; 1811 1812 creators[i] = c.id; 1813 i++; 1814 if (i > *len) 1815 return (E2BIG); 1816 } 1817 1818 *len = i; 1819 1820 return (0); 1821 } 1822 1823 int 1824 pfctl_get_creatorids(struct pfctl_handle *h, uint32_t *creators, size_t *len) 1825 { 1826 int error; 1827 1828 error = pfctl_get_creators_nl(&h->ss, creators, len); 1829 1830 return (error); 1831 } 1832 1833 static inline bool 1834 snl_attr_get_pfaddr(struct snl_state *ss __unused, struct nlattr *nla, 1835 const void *arg __unused, void *target) 1836 { 1837 memcpy(target, NLA_DATA(nla), NLA_DATA_LEN(nla)); 1838 return (true); 1839 } 1840 1841 static inline bool 1842 snl_attr_store_ifname(struct snl_state *ss __unused, struct nlattr *nla, 1843 const void *arg __unused, void *target) 1844 { 1845 size_t maxlen = NLA_DATA_LEN(nla); 1846 1847 if (strnlen((char *)NLA_DATA(nla), maxlen) < maxlen) { 1848 strlcpy(target, (char *)NLA_DATA(nla), maxlen); 1849 return (true); 1850 } 1851 return (false); 1852 } 1853 1854 #define _OUT(_field) offsetof(struct pfctl_state_peer, _field) 1855 static const struct snl_attr_parser nla_p_speer[] = { 1856 { .type = PF_STP_SEQLO, .off = _OUT(seqlo), .cb = snl_attr_get_uint32 }, 1857 { .type = PF_STP_SEQHI, .off = _OUT(seqhi), .cb = snl_attr_get_uint32 }, 1858 { .type = PF_STP_SEQDIFF, .off = _OUT(seqdiff), .cb = snl_attr_get_uint32 }, 1859 { .type = PF_STP_STATE, .off = _OUT(state), .cb = snl_attr_get_uint8 }, 1860 { .type = PF_STP_WSCALE, .off = _OUT(wscale), .cb = snl_attr_get_uint8 }, 1861 }; 1862 SNL_DECLARE_ATTR_PARSER(speer_parser, nla_p_speer); 1863 #undef _OUT 1864 1865 #define _OUT(_field) offsetof(struct pfctl_state_key, _field) 1866 static const struct snl_attr_parser nla_p_skey[] = { 1867 { .type = PF_STK_ADDR0, .off = _OUT(addr[0]), .cb = snl_attr_get_pfaddr }, 1868 { .type = PF_STK_ADDR1, .off = _OUT(addr[1]), .cb = snl_attr_get_pfaddr }, 1869 { .type = PF_STK_PORT0, .off = _OUT(port[0]), .cb = snl_attr_get_uint16 }, 1870 { .type = PF_STK_PORT1, .off = _OUT(port[1]), .cb = snl_attr_get_uint16 }, 1871 { .type = PF_STK_AF, .off = _OUT(af), .cb = snl_attr_get_uint8 }, 1872 { .type = PF_STK_PROTO, .off = _OUT(proto), .cb = snl_attr_get_uint16 }, 1873 }; 1874 SNL_DECLARE_ATTR_PARSER(skey_parser, nla_p_skey); 1875 #undef _OUT 1876 1877 #define _IN(_field) offsetof(struct genlmsghdr, _field) 1878 #define _OUT(_field) offsetof(struct pfctl_state, _field) 1879 static struct snl_attr_parser ap_state[] = { 1880 { .type = PF_ST_ID, .off = _OUT(id), .cb = snl_attr_get_uint64 }, 1881 { .type = PF_ST_CREATORID, .off = _OUT(creatorid), .cb = snl_attr_get_uint32 }, 1882 { .type = PF_ST_IFNAME, .off = _OUT(ifname), .cb = snl_attr_store_ifname }, 1883 { .type = PF_ST_ORIG_IFNAME, .off = _OUT(orig_ifname), .cb = snl_attr_store_ifname }, 1884 { .type = PF_ST_KEY_WIRE, .off = _OUT(key[0]), .arg = &skey_parser, .cb = snl_attr_get_nested }, 1885 { .type = PF_ST_KEY_STACK, .off = _OUT(key[1]), .arg = &skey_parser, .cb = snl_attr_get_nested }, 1886 { .type = PF_ST_PEER_SRC, .off = _OUT(src), .arg = &speer_parser, .cb = snl_attr_get_nested }, 1887 { .type = PF_ST_PEER_DST, .off = _OUT(dst), .arg = &speer_parser, .cb = snl_attr_get_nested }, 1888 { .type = PF_ST_RT_ADDR, .off = _OUT(rt_addr), .cb = snl_attr_get_pfaddr }, 1889 { .type = PF_ST_RULE, .off = _OUT(rule), .cb = snl_attr_get_uint32 }, 1890 { .type = PF_ST_ANCHOR, .off = _OUT(anchor), .cb = snl_attr_get_uint32 }, 1891 { .type = PF_ST_NAT_RULE, .off = _OUT(nat_rule), .cb = snl_attr_get_uint32 }, 1892 { .type = PF_ST_CREATION, .off = _OUT(creation), .cb = snl_attr_get_uint32 }, 1893 { .type = PF_ST_EXPIRE, .off = _OUT(expire), .cb = snl_attr_get_uint32 }, 1894 { .type = PF_ST_PACKETS0, .off = _OUT(packets[0]), .cb = snl_attr_get_uint64 }, 1895 { .type = PF_ST_PACKETS1, .off = _OUT(packets[1]), .cb = snl_attr_get_uint64 }, 1896 { .type = PF_ST_BYTES0, .off = _OUT(bytes[0]), .cb = snl_attr_get_uint64 }, 1897 { .type = PF_ST_BYTES1, .off = _OUT(bytes[1]), .cb = snl_attr_get_uint64 }, 1898 { .type = PF_ST_DIRECTION, .off = _OUT(direction), .cb = snl_attr_get_uint8 }, 1899 { .type = PF_ST_LOG, .off = _OUT(log), .cb = snl_attr_get_uint8 }, 1900 { .type = PF_ST_STATE_FLAGS, .off = _OUT(state_flags), .cb = snl_attr_get_uint16 }, 1901 { .type = PF_ST_SYNC_FLAGS, .off = _OUT(sync_flags), .cb = snl_attr_get_uint8 }, 1902 { .type = PF_ST_RTABLEID, .off = _OUT(rtableid), .cb = snl_attr_get_int32 }, 1903 { .type = PF_ST_MIN_TTL, .off = _OUT(min_ttl), .cb = snl_attr_get_uint8 }, 1904 { .type = PF_ST_MAX_MSS, .off = _OUT(max_mss), .cb = snl_attr_get_uint16 }, 1905 { .type = PF_ST_DNPIPE, .off = _OUT(dnpipe), .cb = snl_attr_get_uint16 }, 1906 { .type = PF_ST_DNRPIPE, .off = _OUT(dnrpipe), .cb = snl_attr_get_uint16 }, 1907 { .type = PF_ST_RT, .off = _OUT(rt), .cb = snl_attr_get_uint8 }, 1908 { .type = PF_ST_RT_IFNAME, .off = _OUT(rt_ifname), .cb = snl_attr_store_ifname }, 1909 }; 1910 #undef _IN 1911 #undef _OUT 1912 SNL_DECLARE_PARSER(state_parser, struct genlmsghdr, snl_f_p_empty, ap_state); 1913 1914 static const struct snl_hdr_parser *all_parsers[] = { 1915 &state_parser, &skey_parser, &speer_parser, 1916 &creator_parser, &getrules_parser 1917 }; 1918 1919 static int 1920 pfctl_get_states_nl(struct pfctl_state_filter *filter, struct snl_state *ss, pfctl_get_state_fn f, void *arg) 1921 { 1922 SNL_VERIFY_PARSERS(all_parsers); 1923 int family_id = snl_get_genl_family(ss, PFNL_FAMILY_NAME); 1924 int ret; 1925 1926 struct nlmsghdr *hdr; 1927 struct snl_writer nw; 1928 1929 if (family_id == 0) 1930 return (ENOTSUP); 1931 1932 snl_init_writer(ss, &nw); 1933 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GETSTATES); 1934 hdr->nlmsg_flags |= NLM_F_DUMP; 1935 snl_add_msg_attr_string(&nw, PF_ST_IFNAME, filter->ifname); 1936 snl_add_msg_attr_u16(&nw, PF_ST_PROTO, filter->proto); 1937 snl_add_msg_attr_u8(&nw, PF_ST_AF, filter->af); 1938 snl_add_msg_attr_ip6(&nw, PF_ST_FILTER_ADDR, &filter->addr.v6); 1939 snl_add_msg_attr_ip6(&nw, PF_ST_FILTER_MASK, &filter->mask.v6); 1940 1941 hdr = snl_finalize_msg(&nw); 1942 if (hdr == NULL) 1943 return (ENOMEM); 1944 1945 uint32_t seq_id = hdr->nlmsg_seq; 1946 1947 snl_send_message(ss, hdr); 1948 1949 struct snl_errmsg_data e = {}; 1950 while ((hdr = snl_read_reply_multi(ss, seq_id, &e)) != NULL) { 1951 struct pfctl_state s; 1952 bzero(&s, sizeof(s)); 1953 if (!snl_parse_nlmsg(ss, hdr, &state_parser, &s)) 1954 continue; 1955 1956 ret = f(&s, arg); 1957 if (ret != 0) 1958 return (ret); 1959 } 1960 1961 return (0); 1962 } 1963 1964 int 1965 pfctl_get_states_iter(pfctl_get_state_fn f, void *arg) 1966 { 1967 struct pfctl_state_filter filter = {}; 1968 return (pfctl_get_filtered_states_iter(&filter, f, arg)); 1969 } 1970 1971 int 1972 pfctl_get_filtered_states_iter(struct pfctl_state_filter *filter, pfctl_get_state_fn f, void *arg) 1973 { 1974 struct snl_state ss = {}; 1975 int error; 1976 1977 snl_init(&ss, NETLINK_GENERIC); 1978 error = pfctl_get_states_nl(filter, &ss, f, arg); 1979 snl_free(&ss); 1980 1981 return (error); 1982 } 1983 1984 static int 1985 pfctl_append_states(struct pfctl_state *s, void *arg) 1986 { 1987 struct pfctl_state *new; 1988 struct pfctl_states *states = (struct pfctl_states *)arg; 1989 1990 new = malloc(sizeof(*s)); 1991 if (new == NULL) 1992 return (ENOMEM); 1993 1994 memcpy(new, s, sizeof(*s)); 1995 1996 TAILQ_INSERT_TAIL(&states->states, new, entry); 1997 1998 return (0); 1999 } 2000 2001 int 2002 pfctl_get_states(int dev __unused, struct pfctl_states *states) 2003 { 2004 int ret; 2005 2006 bzero(states, sizeof(*states)); 2007 TAILQ_INIT(&states->states); 2008 2009 ret = pfctl_get_states_iter(pfctl_append_states, states); 2010 if (ret != 0) { 2011 pfctl_free_states(states); 2012 return (ret); 2013 } 2014 2015 return (0); 2016 } 2017 2018 void 2019 pfctl_free_states(struct pfctl_states *states) 2020 { 2021 struct pfctl_state *s, *tmp; 2022 2023 TAILQ_FOREACH_SAFE(s, &states->states, entry, tmp) { 2024 free(s); 2025 } 2026 2027 bzero(states, sizeof(*states)); 2028 } 2029 2030 struct pfctl_nl_clear_states { 2031 uint32_t killed; 2032 }; 2033 #define _OUT(_field) offsetof(struct pfctl_nl_clear_states, _field) 2034 static struct snl_attr_parser ap_clear_states[] = { 2035 { .type = PF_CS_KILLED, .off = _OUT(killed), .cb = snl_attr_get_uint32 }, 2036 }; 2037 #undef _OUT 2038 SNL_DECLARE_PARSER(clear_states_parser, struct genlmsghdr, snl_f_p_empty, ap_clear_states); 2039 2040 static int 2041 _pfctl_clear_states_h(struct pfctl_handle *h, const struct pfctl_kill *kill, 2042 unsigned int *killed, int cmd) 2043 { 2044 struct snl_writer nw; 2045 struct snl_errmsg_data e = {}; 2046 struct pfctl_nl_clear_states attrs = {}; 2047 struct nlmsghdr *hdr; 2048 uint32_t seq_id; 2049 int family_id; 2050 2051 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME); 2052 if (family_id == 0) 2053 return (ENOTSUP); 2054 2055 snl_init_writer(&h->ss, &nw); 2056 hdr = snl_create_genl_msg_request(&nw, family_id, cmd); 2057 hdr->nlmsg_flags |= NLM_F_DUMP; 2058 2059 snl_add_msg_attr_u64(&nw, PF_CS_CMP_ID, kill->cmp.id); 2060 snl_add_msg_attr_u32(&nw, PF_CS_CMP_CREATORID, htonl(kill->cmp.creatorid)); 2061 snl_add_msg_attr_u8(&nw, PF_CS_CMP_DIR, kill->cmp.direction); 2062 snl_add_msg_attr_u8(&nw, PF_CS_AF, kill->af); 2063 snl_add_msg_attr_u8(&nw, PF_CS_PROTO, kill->proto); 2064 snl_add_msg_attr_rule_addr(&nw, PF_CS_SRC, &kill->src); 2065 snl_add_msg_attr_rule_addr(&nw, PF_CS_DST, &kill->dst); 2066 snl_add_msg_attr_rule_addr(&nw, PF_CS_RT_ADDR, &kill->rt_addr); 2067 snl_add_msg_attr_string(&nw, PF_CS_IFNAME, kill->ifname); 2068 snl_add_msg_attr_string(&nw, PF_CS_LABEL, kill->label); 2069 snl_add_msg_attr_bool(&nw, PF_CS_KILL_MATCH, kill->kill_match); 2070 snl_add_msg_attr_bool(&nw, PF_CS_NAT, kill->nat); 2071 2072 if ((hdr = snl_finalize_msg(&nw)) == NULL) 2073 return (ENXIO); 2074 2075 seq_id = hdr->nlmsg_seq; 2076 2077 if (! snl_send_message(&h->ss, hdr)) 2078 return (ENXIO); 2079 2080 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) { 2081 if (! snl_parse_nlmsg(&h->ss, hdr, &clear_states_parser, &attrs)) 2082 continue; 2083 } 2084 2085 if (killed) 2086 *killed = attrs.killed; 2087 2088 return (e.error); 2089 } 2090 2091 int 2092 pfctl_clear_states_h(struct pfctl_handle *h, const struct pfctl_kill *kill, 2093 unsigned int *killed) 2094 { 2095 return(_pfctl_clear_states_h(h, kill, killed, PFNL_CMD_CLRSTATES)); 2096 } 2097 2098 int 2099 pfctl_kill_states_h(struct pfctl_handle *h, const struct pfctl_kill *kill, 2100 unsigned int *killed) 2101 { 2102 return(_pfctl_clear_states_h(h, kill, killed, PFNL_CMD_KILLSTATES)); 2103 } 2104 2105 static int 2106 _pfctl_clear_states(int dev __unused, const struct pfctl_kill *kill, 2107 unsigned int *killed, uint64_t cmd) 2108 { 2109 struct pfctl_handle *h; 2110 int ret; 2111 2112 h = pfctl_open(PF_DEVICE); 2113 if (h == NULL) 2114 return (ENODEV); 2115 2116 ret = _pfctl_clear_states_h(h, kill, killed, cmd); 2117 pfctl_close(h); 2118 2119 return (ret); 2120 } 2121 2122 int 2123 pfctl_clear_states(int dev __unused, const struct pfctl_kill *kill, 2124 unsigned int *killed) 2125 { 2126 return (_pfctl_clear_states(dev, kill, killed, PFNL_CMD_CLRSTATES)); 2127 } 2128 2129 int 2130 pfctl_kill_states(int dev __unused, const struct pfctl_kill *kill, unsigned int *killed) 2131 { 2132 return (_pfctl_clear_states(dev, kill, killed, PFNL_CMD_KILLSTATES)); 2133 } 2134 2135 int 2136 pfctl_clear_rules(int dev, const char *anchorname) 2137 { 2138 struct pfioc_trans trans; 2139 struct pfioc_trans_e transe[2]; 2140 int ret; 2141 2142 bzero(&trans, sizeof(trans)); 2143 bzero(&transe, sizeof(transe)); 2144 2145 transe[0].rs_num = PF_RULESET_SCRUB; 2146 if (strlcpy(transe[0].anchor, anchorname, sizeof(transe[0].anchor)) 2147 >= sizeof(transe[0].anchor)) 2148 return (E2BIG); 2149 2150 transe[1].rs_num = PF_RULESET_FILTER; 2151 if (strlcpy(transe[1].anchor, anchorname, sizeof(transe[1].anchor)) 2152 >= sizeof(transe[1].anchor)) 2153 return (E2BIG); 2154 2155 trans.size = 2; 2156 trans.esize = sizeof(transe[0]); 2157 trans.array = transe; 2158 2159 ret = ioctl(dev, DIOCXBEGIN, &trans); 2160 if (ret != 0) 2161 return (errno); 2162 ret = ioctl(dev, DIOCXCOMMIT, &trans); 2163 if (ret != 0) 2164 return (errno); 2165 2166 return (0); 2167 } 2168 2169 int 2170 pfctl_clear_nat(int dev, const char *anchorname) 2171 { 2172 struct pfioc_trans trans; 2173 struct pfioc_trans_e transe[3]; 2174 int ret; 2175 2176 bzero(&trans, sizeof(trans)); 2177 bzero(&transe, sizeof(transe)); 2178 2179 transe[0].rs_num = PF_RULESET_NAT; 2180 if (strlcpy(transe[0].anchor, anchorname, sizeof(transe[0].anchor)) 2181 >= sizeof(transe[0].anchor)) 2182 return (E2BIG); 2183 2184 transe[1].rs_num = PF_RULESET_BINAT; 2185 if (strlcpy(transe[1].anchor, anchorname, sizeof(transe[1].anchor)) 2186 >= sizeof(transe[0].anchor)) 2187 return (E2BIG); 2188 2189 transe[2].rs_num = PF_RULESET_RDR; 2190 if (strlcpy(transe[2].anchor, anchorname, sizeof(transe[2].anchor)) 2191 >= sizeof(transe[2].anchor)) 2192 return (E2BIG); 2193 2194 trans.size = 3; 2195 trans.esize = sizeof(transe[0]); 2196 trans.array = transe; 2197 2198 ret = ioctl(dev, DIOCXBEGIN, &trans); 2199 if (ret != 0) 2200 return (errno); 2201 ret = ioctl(dev, DIOCXCOMMIT, &trans); 2202 if (ret != 0) 2203 return (errno); 2204 2205 return (0); 2206 } 2207 2208 int 2209 pfctl_clear_eth_rules(int dev, const char *anchorname) 2210 { 2211 struct pfioc_trans trans; 2212 struct pfioc_trans_e transe; 2213 int ret; 2214 2215 bzero(&trans, sizeof(trans)); 2216 bzero(&transe, sizeof(transe)); 2217 2218 transe.rs_num = PF_RULESET_ETH; 2219 if (strlcpy(transe.anchor, anchorname, sizeof(transe.anchor)) 2220 >= sizeof(transe.anchor)) 2221 return (E2BIG); 2222 2223 trans.size = 1; 2224 trans.esize = sizeof(transe); 2225 trans.array = &transe; 2226 2227 ret = ioctl(dev, DIOCXBEGIN, &trans); 2228 if (ret != 0) 2229 return (errno); 2230 ret = ioctl(dev, DIOCXCOMMIT, &trans); 2231 if (ret != 0) 2232 return (errno); 2233 2234 return (0); 2235 } 2236 2237 static int 2238 _pfctl_get_limit(int dev, const int index, uint *limit) 2239 { 2240 struct pfioc_limit pl; 2241 2242 bzero(&pl, sizeof(pl)); 2243 pl.index = index; 2244 2245 if (ioctl(dev, DIOCGETLIMIT, &pl) == -1) 2246 return (errno); 2247 2248 *limit = pl.limit; 2249 2250 return (0); 2251 } 2252 2253 int 2254 pfctl_set_syncookies(int dev, const struct pfctl_syncookies *s) 2255 { 2256 struct pfioc_nv nv; 2257 nvlist_t *nvl; 2258 int ret; 2259 uint state_limit; 2260 uint64_t lim, hi, lo; 2261 2262 ret = _pfctl_get_limit(dev, PF_LIMIT_STATES, &state_limit); 2263 if (ret != 0) 2264 return (ret); 2265 2266 lim = state_limit; 2267 hi = lim * s->highwater / 100; 2268 lo = lim * s->lowwater / 100; 2269 2270 if (lo == hi) 2271 hi++; 2272 2273 nvl = nvlist_create(0); 2274 2275 nvlist_add_bool(nvl, "enabled", s->mode != PFCTL_SYNCOOKIES_NEVER); 2276 nvlist_add_bool(nvl, "adaptive", s->mode == PFCTL_SYNCOOKIES_ADAPTIVE); 2277 nvlist_add_number(nvl, "highwater", hi); 2278 nvlist_add_number(nvl, "lowwater", lo); 2279 2280 nv.data = nvlist_pack(nvl, &nv.len); 2281 nv.size = nv.len; 2282 nvlist_destroy(nvl); 2283 nvl = NULL; 2284 2285 ret = ioctl(dev, DIOCSETSYNCOOKIES, &nv); 2286 2287 free(nv.data); 2288 if (ret != 0) 2289 return (errno); 2290 2291 return (0); 2292 } 2293 2294 int 2295 pfctl_get_syncookies(int dev, struct pfctl_syncookies *s) 2296 { 2297 nvlist_t *nvl; 2298 int ret; 2299 uint state_limit; 2300 bool enabled, adaptive; 2301 2302 ret = _pfctl_get_limit(dev, PF_LIMIT_STATES, &state_limit); 2303 if (ret != 0) 2304 return (ret); 2305 2306 bzero(s, sizeof(*s)); 2307 2308 nvl = nvlist_create(0); 2309 2310 if ((ret = pfctl_do_ioctl(dev, DIOCGETSYNCOOKIES, 256, &nvl)) != 0) { 2311 ret = errno; 2312 goto out; 2313 } 2314 2315 enabled = nvlist_get_bool(nvl, "enabled"); 2316 adaptive = nvlist_get_bool(nvl, "adaptive"); 2317 2318 if (enabled) { 2319 if (adaptive) 2320 s->mode = PFCTL_SYNCOOKIES_ADAPTIVE; 2321 else 2322 s->mode = PFCTL_SYNCOOKIES_ALWAYS; 2323 } else { 2324 s->mode = PFCTL_SYNCOOKIES_NEVER; 2325 } 2326 2327 s->highwater = nvlist_get_number(nvl, "highwater") * 100 / state_limit; 2328 s->lowwater = nvlist_get_number(nvl, "lowwater") * 100 / state_limit; 2329 s->halfopen_states = nvlist_get_number(nvl, "halfopen_states"); 2330 2331 out: 2332 nvlist_destroy(nvl); 2333 return (ret); 2334 } 2335 2336 int 2337 pfctl_table_add_addrs(int dev, struct pfr_table *tbl, struct pfr_addr 2338 *addr, int size, int *nadd, int flags) 2339 { 2340 struct pfioc_table io; 2341 2342 if (tbl == NULL || size < 0 || (size && addr == NULL)) { 2343 return (EINVAL); 2344 } 2345 bzero(&io, sizeof io); 2346 io.pfrio_flags = flags; 2347 io.pfrio_table = *tbl; 2348 io.pfrio_buffer = addr; 2349 io.pfrio_esize = sizeof(*addr); 2350 io.pfrio_size = size; 2351 2352 if (ioctl(dev, DIOCRADDADDRS, &io)) 2353 return (errno); 2354 if (nadd != NULL) 2355 *nadd = io.pfrio_nadd; 2356 return (0); 2357 } 2358 2359 int 2360 pfctl_table_del_addrs(int dev, struct pfr_table *tbl, struct pfr_addr 2361 *addr, int size, int *ndel, int flags) 2362 { 2363 struct pfioc_table io; 2364 2365 if (tbl == NULL || size < 0 || (size && addr == NULL)) { 2366 return (EINVAL); 2367 } 2368 bzero(&io, sizeof io); 2369 io.pfrio_flags = flags; 2370 io.pfrio_table = *tbl; 2371 io.pfrio_buffer = addr; 2372 io.pfrio_esize = sizeof(*addr); 2373 io.pfrio_size = size; 2374 2375 if (ioctl(dev, DIOCRDELADDRS, &io)) 2376 return (errno); 2377 if (ndel != NULL) 2378 *ndel = io.pfrio_ndel; 2379 return (0); 2380 } 2381 2382 int 2383 pfctl_table_set_addrs(int dev, struct pfr_table *tbl, struct pfr_addr 2384 *addr, int size, int *size2, int *nadd, int *ndel, int *nchange, int flags) 2385 { 2386 struct pfioc_table io; 2387 2388 if (tbl == NULL || size < 0 || (size && addr == NULL)) { 2389 return (EINVAL); 2390 } 2391 bzero(&io, sizeof io); 2392 io.pfrio_flags = flags; 2393 io.pfrio_table = *tbl; 2394 io.pfrio_buffer = addr; 2395 io.pfrio_esize = sizeof(*addr); 2396 io.pfrio_size = size; 2397 io.pfrio_size2 = (size2 != NULL) ? *size2 : 0; 2398 if (ioctl(dev, DIOCRSETADDRS, &io)) 2399 return (errno); 2400 if (nadd != NULL) 2401 *nadd = io.pfrio_nadd; 2402 if (ndel != NULL) 2403 *ndel = io.pfrio_ndel; 2404 if (nchange != NULL) 2405 *nchange = io.pfrio_nchange; 2406 if (size2 != NULL) 2407 *size2 = io.pfrio_size2; 2408 return (0); 2409 } 2410 2411 int pfctl_table_get_addrs(int dev, struct pfr_table *tbl, struct pfr_addr *addr, 2412 int *size, int flags) 2413 { 2414 struct pfioc_table io; 2415 2416 if (tbl == NULL || size == NULL || *size < 0 || 2417 (*size && addr == NULL)) { 2418 return (EINVAL); 2419 } 2420 bzero(&io, sizeof io); 2421 io.pfrio_flags = flags; 2422 io.pfrio_table = *tbl; 2423 io.pfrio_buffer = addr; 2424 io.pfrio_esize = sizeof(*addr); 2425 io.pfrio_size = *size; 2426 if (ioctl(dev, DIOCRGETADDRS, &io)) 2427 return (errno); 2428 *size = io.pfrio_size; 2429 return (0); 2430 } 2431 2432 int 2433 pfctl_set_statusif(struct pfctl_handle *h, const char *ifname) 2434 { 2435 struct snl_writer nw; 2436 struct snl_errmsg_data e = {}; 2437 struct nlmsghdr *hdr; 2438 uint32_t seq_id; 2439 int family_id; 2440 2441 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME); 2442 if (family_id == 0) 2443 return (ENOTSUP); 2444 2445 snl_init_writer(&h->ss, &nw); 2446 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_SET_STATUSIF); 2447 2448 snl_add_msg_attr_string(&nw, PF_SS_IFNAME, ifname); 2449 2450 if ((hdr = snl_finalize_msg(&nw)) == NULL) 2451 return (ENXIO); 2452 2453 seq_id = hdr->nlmsg_seq; 2454 2455 if (! snl_send_message(&h->ss, hdr)) 2456 return (ENXIO); 2457 2458 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) { 2459 } 2460 2461 return (e.error); 2462 } 2463 2464 #define _IN(_field) offsetof(struct genlmsghdr, _field) 2465 #define _OUT(_field) offsetof(struct pfctl_natlook, _field) 2466 static struct snl_attr_parser ap_natlook[] = { 2467 { .type = PF_NL_SRC_ADDR, .off = _OUT(saddr), .cb = snl_attr_get_in6_addr }, 2468 { .type = PF_NL_DST_ADDR, .off = _OUT(daddr), .cb = snl_attr_get_in6_addr }, 2469 { .type = PF_NL_SRC_PORT, .off = _OUT(sport), .cb = snl_attr_get_uint16 }, 2470 { .type = PF_NL_DST_PORT, .off = _OUT(dport), .cb = snl_attr_get_uint16 }, 2471 }; 2472 #undef _IN 2473 #undef _OUT 2474 SNL_DECLARE_PARSER(natlook_parser, struct genlmsghdr, snl_f_p_empty, ap_natlook); 2475 2476 int 2477 pfctl_natlook(struct pfctl_handle *h, const struct pfctl_natlook_key *k, 2478 struct pfctl_natlook *r) 2479 { 2480 struct snl_writer nw; 2481 struct snl_errmsg_data e = {}; 2482 struct nlmsghdr *hdr; 2483 uint32_t seq_id; 2484 int family_id; 2485 2486 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME); 2487 if (family_id == 0) 2488 return (ENOTSUP); 2489 2490 snl_init_writer(&h->ss, &nw); 2491 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_NATLOOK); 2492 hdr->nlmsg_flags |= NLM_F_DUMP; 2493 2494 snl_add_msg_attr_u8(&nw, PF_NL_AF, k->af); 2495 snl_add_msg_attr_u8(&nw, PF_NL_DIRECTION, k->direction); 2496 snl_add_msg_attr_u8(&nw, PF_NL_PROTO, k->proto); 2497 snl_add_msg_attr_ip6(&nw, PF_NL_SRC_ADDR, &k->saddr.v6); 2498 snl_add_msg_attr_ip6(&nw, PF_NL_DST_ADDR, &k->daddr.v6); 2499 snl_add_msg_attr_u16(&nw, PF_NL_SRC_PORT, k->sport); 2500 snl_add_msg_attr_u16(&nw, PF_NL_DST_PORT, k->dport); 2501 2502 if ((hdr = snl_finalize_msg(&nw)) == NULL) 2503 return (ENXIO); 2504 2505 seq_id = hdr->nlmsg_seq; 2506 2507 if (! snl_send_message(&h->ss, hdr)) 2508 return (ENXIO); 2509 2510 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) { 2511 if (! snl_parse_nlmsg(&h->ss, hdr, &natlook_parser, r)) 2512 continue; 2513 } 2514 2515 return (e.error); 2516 } 2517 2518 int 2519 pfctl_set_debug(struct pfctl_handle *h, uint32_t level) 2520 { 2521 struct snl_writer nw; 2522 struct snl_errmsg_data e = {}; 2523 struct nlmsghdr *hdr; 2524 uint32_t seq_id; 2525 int family_id; 2526 2527 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME); 2528 if (family_id == 0) 2529 return (ENOTSUP); 2530 2531 snl_init_writer(&h->ss, &nw); 2532 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_SET_DEBUG); 2533 2534 snl_add_msg_attr_u32(&nw, PF_SD_LEVEL, level); 2535 2536 if ((hdr = snl_finalize_msg(&nw)) == NULL) 2537 return (ENXIO); 2538 2539 seq_id = hdr->nlmsg_seq; 2540 2541 if (! snl_send_message(&h->ss, hdr)) 2542 return (ENXIO); 2543 2544 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) { 2545 } 2546 2547 return (e.error); 2548 } 2549 2550 int 2551 pfctl_set_timeout(struct pfctl_handle *h, uint32_t timeout, uint32_t seconds) 2552 { 2553 struct snl_writer nw; 2554 struct snl_errmsg_data e = {}; 2555 struct nlmsghdr *hdr; 2556 uint32_t seq_id; 2557 int family_id; 2558 2559 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME); 2560 if (family_id == 0) 2561 return (ENOTSUP); 2562 2563 snl_init_writer(&h->ss, &nw); 2564 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_SET_TIMEOUT); 2565 2566 snl_add_msg_attr_u32(&nw, PF_TO_TIMEOUT, timeout); 2567 snl_add_msg_attr_u32(&nw, PF_TO_SECONDS, seconds); 2568 2569 if ((hdr = snl_finalize_msg(&nw)) == NULL) 2570 return (ENXIO); 2571 2572 seq_id = hdr->nlmsg_seq; 2573 2574 if (! snl_send_message(&h->ss, hdr)) 2575 return (ENXIO); 2576 2577 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) { 2578 } 2579 2580 return (e.error); 2581 } 2582 2583 struct pfctl_nl_timeout { 2584 uint32_t seconds; 2585 }; 2586 #define _OUT(_field) offsetof(struct pfctl_nl_timeout, _field) 2587 static struct snl_attr_parser ap_get_timeout[] = { 2588 { .type = PF_TO_SECONDS, .off = _OUT(seconds), .cb = snl_attr_get_uint32 }, 2589 }; 2590 #undef _OUT 2591 SNL_DECLARE_PARSER(get_timeout_parser, struct genlmsghdr, snl_f_p_empty, ap_get_timeout); 2592 2593 int 2594 pfctl_get_timeout(struct pfctl_handle *h, uint32_t timeout, uint32_t *seconds) 2595 { 2596 struct snl_writer nw; 2597 struct pfctl_nl_timeout to = {}; 2598 struct snl_errmsg_data e = {}; 2599 struct nlmsghdr *hdr; 2600 uint32_t seq_id; 2601 int family_id; 2602 2603 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME); 2604 if (family_id == 0) 2605 return (ENOTSUP); 2606 2607 snl_init_writer(&h->ss, &nw); 2608 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GET_TIMEOUT); 2609 hdr->nlmsg_flags |= NLM_F_DUMP; 2610 2611 snl_add_msg_attr_u32(&nw, PF_TO_TIMEOUT, timeout); 2612 2613 if ((hdr = snl_finalize_msg(&nw)) == NULL) 2614 return (ENXIO); 2615 2616 seq_id = hdr->nlmsg_seq; 2617 2618 if (! snl_send_message(&h->ss, hdr)) 2619 return (ENXIO); 2620 2621 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) { 2622 if (! snl_parse_nlmsg(&h->ss, hdr, &get_timeout_parser, &to)) 2623 continue; 2624 } 2625 2626 if (seconds != NULL) 2627 *seconds = to.seconds; 2628 2629 return (e.error); 2630 } 2631 2632 int 2633 pfctl_set_limit(struct pfctl_handle *h, const int index, const uint limit) 2634 { 2635 struct snl_writer nw; 2636 struct snl_errmsg_data e = {}; 2637 struct nlmsghdr *hdr; 2638 uint32_t seq_id; 2639 int family_id; 2640 2641 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME); 2642 if (family_id == 0) 2643 return (ENOTSUP); 2644 2645 snl_init_writer(&h->ss, &nw); 2646 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_SET_LIMIT); 2647 2648 snl_add_msg_attr_u32(&nw, PF_LI_INDEX, index); 2649 snl_add_msg_attr_u32(&nw, PF_LI_LIMIT, limit); 2650 2651 if ((hdr = snl_finalize_msg(&nw)) == NULL) 2652 return (ENXIO); 2653 2654 seq_id = hdr->nlmsg_seq; 2655 2656 if (! snl_send_message(&h->ss, hdr)) 2657 return (ENXIO); 2658 2659 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) { 2660 } 2661 2662 return (e.error); 2663 } 2664 2665 struct pfctl_nl_limit { 2666 unsigned int limit; 2667 }; 2668 #define _OUT(_field) offsetof(struct pfctl_nl_limit, _field) 2669 static struct snl_attr_parser ap_get_limit[] = { 2670 { .type = PF_LI_LIMIT, .off = _OUT(limit), .cb = snl_attr_get_uint32 }, 2671 }; 2672 #undef _OUT 2673 SNL_DECLARE_PARSER(get_limit_parser, struct genlmsghdr, snl_f_p_empty, ap_get_limit); 2674 2675 int 2676 pfctl_get_limit(struct pfctl_handle *h, const int index, uint *limit) 2677 { 2678 struct snl_writer nw; 2679 struct pfctl_nl_limit li = {}; 2680 struct snl_errmsg_data e = {}; 2681 struct nlmsghdr *hdr; 2682 uint32_t seq_id; 2683 int family_id; 2684 2685 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME); 2686 if (family_id == 0) 2687 return (ENOTSUP); 2688 2689 snl_init_writer(&h->ss, &nw); 2690 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GET_LIMIT); 2691 hdr->nlmsg_flags |= NLM_F_DUMP; 2692 2693 snl_add_msg_attr_u32(&nw, PF_LI_INDEX, index); 2694 2695 if ((hdr = snl_finalize_msg(&nw)) == NULL) 2696 return (ENXIO); 2697 2698 seq_id = hdr->nlmsg_seq; 2699 2700 if (! snl_send_message(&h->ss, hdr)) 2701 return (ENXIO); 2702 2703 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) { 2704 if (! snl_parse_nlmsg(&h->ss, hdr, &get_limit_parser, &li)) 2705 continue; 2706 } 2707 2708 if (limit != NULL) 2709 *limit = li.limit; 2710 2711 return (e.error); 2712 } 2713 2714 struct pfctl_nl_begin_addrs { 2715 uint32_t ticket; 2716 }; 2717 #define _OUT(_field) offsetof(struct pfctl_nl_begin_addrs, _field) 2718 static struct snl_attr_parser ap_begin_addrs[] = { 2719 { .type = PF_BA_TICKET, .off = _OUT(ticket), .cb = snl_attr_get_uint32 }, 2720 }; 2721 #undef _OUT 2722 SNL_DECLARE_PARSER(begin_addrs_parser, struct genlmsghdr, snl_f_p_empty, ap_begin_addrs); 2723 2724 int 2725 pfctl_begin_addrs(struct pfctl_handle *h, uint32_t *ticket) 2726 { 2727 struct snl_writer nw; 2728 struct pfctl_nl_begin_addrs attrs = {}; 2729 struct snl_errmsg_data e = {}; 2730 struct nlmsghdr *hdr; 2731 uint32_t seq_id; 2732 int family_id; 2733 2734 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME); 2735 if (family_id == 0) 2736 return (ENOTSUP); 2737 2738 snl_init_writer(&h->ss, &nw); 2739 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_BEGIN_ADDRS); 2740 hdr->nlmsg_flags |= NLM_F_DUMP; 2741 2742 if ((hdr = snl_finalize_msg(&nw)) == NULL) 2743 return (ENXIO); 2744 2745 seq_id = hdr->nlmsg_seq; 2746 2747 if (! snl_send_message(&h->ss, hdr)) 2748 return (ENXIO); 2749 2750 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) { 2751 if (! snl_parse_nlmsg(&h->ss, hdr, &begin_addrs_parser, &attrs)) 2752 continue; 2753 } 2754 2755 if (ticket != NULL) 2756 *ticket = attrs.ticket; 2757 2758 return (e.error); 2759 } 2760 2761 int 2762 pfctl_add_addr(struct pfctl_handle *h, const struct pfioc_pooladdr *pa, int which) 2763 { 2764 struct snl_writer nw; 2765 struct snl_errmsg_data e = {}; 2766 struct nlmsghdr *hdr; 2767 uint32_t seq_id; 2768 int family_id; 2769 2770 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME); 2771 if (family_id == 0) 2772 return (ENOTSUP); 2773 2774 snl_init_writer(&h->ss, &nw); 2775 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_ADD_ADDR); 2776 2777 snl_add_msg_attr_u32(&nw, PF_AA_ACTION, pa->action); 2778 snl_add_msg_attr_u32(&nw, PF_AA_TICKET, pa->ticket); 2779 snl_add_msg_attr_u32(&nw, PF_AA_NR, pa->nr); 2780 snl_add_msg_attr_u32(&nw, PF_AA_R_NUM, pa->r_num); 2781 snl_add_msg_attr_u8(&nw, PF_AA_R_ACTION, pa->r_action); 2782 snl_add_msg_attr_u8(&nw, PF_AA_R_LAST, pa->r_last); 2783 snl_add_msg_attr_u8(&nw, PF_AA_AF, pa->af); 2784 snl_add_msg_attr_string(&nw, PF_AA_ANCHOR, pa->anchor); 2785 snl_add_msg_attr_pool_addr(&nw, PF_AA_ADDR, &pa->addr); 2786 snl_add_msg_attr_u32(&nw, PF_AA_WHICH, which); 2787 2788 if ((hdr = snl_finalize_msg(&nw)) == NULL) 2789 return (ENXIO); 2790 2791 seq_id = hdr->nlmsg_seq; 2792 2793 if (! snl_send_message(&h->ss, hdr)) 2794 return (ENXIO); 2795 2796 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) { 2797 } 2798 2799 return (e.error); 2800 } 2801 2802 static const struct snl_attr_parser ap_get_addrs[] = { 2803 { .type = PF_AA_NR, .off = 0, .cb = snl_attr_get_uint32 }, 2804 }; 2805 SNL_DECLARE_PARSER(get_addrs_parser, struct genlmsghdr, snl_f_p_empty, ap_get_addrs); 2806 2807 int 2808 pfctl_get_addrs(struct pfctl_handle *h, uint32_t ticket, uint32_t r_num, 2809 uint8_t r_action, const char *anchor, uint32_t *nr, int which) 2810 { 2811 struct snl_writer nw; 2812 struct snl_errmsg_data e = {}; 2813 struct nlmsghdr *hdr; 2814 uint32_t seq_id; 2815 int family_id; 2816 2817 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME); 2818 if (family_id == 0) 2819 return (ENOTSUP); 2820 2821 snl_init_writer(&h->ss, &nw); 2822 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GET_ADDRS); 2823 2824 snl_add_msg_attr_u32(&nw, PF_AA_TICKET, ticket); 2825 snl_add_msg_attr_u32(&nw, PF_AA_R_NUM, r_num); 2826 snl_add_msg_attr_u8(&nw, PF_AA_R_ACTION, r_action); 2827 snl_add_msg_attr_string(&nw, PF_AA_ANCHOR, anchor); 2828 snl_add_msg_attr_u32(&nw, PF_AA_WHICH, which); 2829 2830 if ((hdr = snl_finalize_msg(&nw)) == NULL) 2831 return (ENXIO); 2832 2833 seq_id = hdr->nlmsg_seq; 2834 2835 if (! snl_send_message(&h->ss, hdr)) 2836 return (ENXIO); 2837 2838 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) { 2839 if (! snl_parse_nlmsg(&h->ss, hdr, &get_addrs_parser, nr)) 2840 continue; 2841 } 2842 2843 return (e.error); 2844 } 2845 2846 #define _OUT(_field) offsetof(struct pf_pooladdr, _field) 2847 static const struct snl_attr_parser ap_pool_addr[] = { 2848 { .type = PF_PA_ADDR, .off = _OUT(addr), .arg = &addr_wrap_parser, .cb = snl_attr_get_nested }, 2849 { .type = PF_PA_IFNAME, .off = _OUT(ifname), .arg_u32 = IFNAMSIZ, .cb = snl_attr_copy_string }, 2850 }; 2851 SNL_DECLARE_ATTR_PARSER(pool_addr_parser, ap_pool_addr); 2852 #undef _OUT 2853 2854 #define _OUT(_field) offsetof(struct pfioc_pooladdr, _field) 2855 static const struct snl_attr_parser ap_get_addr[] = { 2856 { .type = PF_AA_ACTION, .off = _OUT(action), .cb = snl_attr_get_uint32 }, 2857 { .type = PF_AA_TICKET, .off = _OUT(ticket), .cb = snl_attr_get_uint32 }, 2858 { .type = PF_AA_NR, .off = _OUT(nr), .cb = snl_attr_get_uint32 }, 2859 { .type = PF_AA_R_NUM, .off = _OUT(r_num), .cb = snl_attr_get_uint32 }, 2860 { .type = PF_AA_R_ACTION, .off = _OUT(r_action), .cb = snl_attr_get_uint8 }, 2861 { .type = PF_AA_R_LAST, .off = _OUT(r_last), .cb = snl_attr_get_uint8 }, 2862 { .type = PF_AA_AF, .off = _OUT(af), .cb = snl_attr_get_uint8 }, 2863 { .type = PF_AA_ANCHOR, .off = _OUT(anchor), .arg_u32 = MAXPATHLEN, .cb = snl_attr_copy_string }, 2864 { .type = PF_AA_ADDR, .off = _OUT(addr), .arg = &pool_addr_parser, .cb = snl_attr_get_nested }, 2865 }; 2866 SNL_DECLARE_PARSER(get_addr_parser, struct genlmsghdr, snl_f_p_empty, ap_get_addr); 2867 #undef _OUT 2868 2869 int 2870 pfctl_get_addr(struct pfctl_handle *h, uint32_t ticket, uint32_t r_num, 2871 uint8_t r_action, const char *anchor, uint32_t nr, struct pfioc_pooladdr *pa, 2872 int which) 2873 { 2874 struct snl_writer nw; 2875 struct snl_errmsg_data e = {}; 2876 struct nlmsghdr *hdr; 2877 uint32_t seq_id; 2878 int family_id; 2879 2880 family_id =snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME); 2881 if (family_id == 0) 2882 return (ENOTSUP); 2883 2884 snl_init_writer(&h->ss, &nw); 2885 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GET_ADDR); 2886 2887 snl_add_msg_attr_u32(&nw, PF_AA_TICKET, ticket); 2888 snl_add_msg_attr_u32(&nw, PF_AA_R_NUM, r_num); 2889 snl_add_msg_attr_u8(&nw, PF_AA_R_ACTION, r_action); 2890 snl_add_msg_attr_string(&nw, PF_AA_ANCHOR, anchor); 2891 snl_add_msg_attr_u32(&nw, PF_AA_NR, nr); 2892 snl_add_msg_attr_u32(&nw, PF_AA_WHICH, which); 2893 2894 if ((hdr = snl_finalize_msg(&nw)) == NULL) 2895 return (ENXIO); 2896 2897 seq_id = hdr->nlmsg_seq; 2898 2899 if (! snl_send_message(&h->ss, hdr)) 2900 return (ENXIO); 2901 2902 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) { 2903 if (! snl_parse_nlmsg(&h->ss, hdr, &get_addr_parser, pa)) 2904 continue; 2905 } 2906 2907 return (e.error); 2908 } 2909 2910 #define _OUT(_field) offsetof(struct pfioc_ruleset, _field) 2911 static const struct snl_attr_parser ap_ruleset[] = { 2912 { .type = PF_RS_NR, .off = _OUT(nr), .cb = snl_attr_get_uint32 }, 2913 { .type = PF_RS_NAME, .off = _OUT(name), .arg = (void *)PF_ANCHOR_NAME_SIZE, .cb = snl_attr_copy_string }, 2914 }; 2915 SNL_DECLARE_PARSER(ruleset_parser, struct genlmsghdr, snl_f_p_empty, ap_ruleset); 2916 #undef _OUT 2917 2918 int 2919 pfctl_get_rulesets(struct pfctl_handle *h, const char *path, uint32_t *nr) 2920 { 2921 struct snl_writer nw; 2922 struct snl_errmsg_data e = {}; 2923 struct nlmsghdr *hdr; 2924 struct pfioc_ruleset rs = {}; 2925 uint32_t seq_id; 2926 int family_id; 2927 2928 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME); 2929 if (family_id == 0) 2930 return (ENOTSUP); 2931 2932 snl_init_writer(&h->ss, &nw); 2933 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GET_RULESETS); 2934 2935 snl_add_msg_attr_string(&nw, PF_RS_PATH, path); 2936 2937 if ((hdr = snl_finalize_msg(&nw)) == NULL) 2938 return (ENXIO); 2939 2940 seq_id = hdr->nlmsg_seq; 2941 2942 if (! snl_send_message(&h->ss, hdr)) 2943 return (ENXIO); 2944 2945 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) { 2946 if (! snl_parse_nlmsg(&h->ss, hdr, &ruleset_parser, &rs)) 2947 continue; 2948 } 2949 2950 *nr = rs.nr; 2951 2952 return (e.error); 2953 } 2954 2955 int 2956 pfctl_get_ruleset(struct pfctl_handle *h, const char *path, uint32_t nr, struct pfioc_ruleset *rs) 2957 { 2958 struct snl_writer nw; 2959 struct snl_errmsg_data e = {}; 2960 struct nlmsghdr *hdr; 2961 uint32_t seq_id; 2962 int family_id; 2963 2964 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME); 2965 if (family_id == 0) 2966 return (ENOTSUP); 2967 2968 snl_init_writer(&h->ss, &nw); 2969 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GET_RULESET); 2970 2971 snl_add_msg_attr_string(&nw, PF_RS_PATH, path); 2972 snl_add_msg_attr_u32(&nw, PF_RS_NR, nr); 2973 2974 if ((hdr = snl_finalize_msg(&nw)) == NULL) 2975 return (ENXIO); 2976 2977 seq_id = hdr->nlmsg_seq; 2978 2979 if (! snl_send_message(&h->ss, hdr)) 2980 return (ENXIO); 2981 2982 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) { 2983 if (! snl_parse_nlmsg(&h->ss, hdr, &ruleset_parser, rs)) 2984 continue; 2985 } 2986 2987 return (e.error); 2988 } 2989 2990 #define _OUT(_field) offsetof(struct pfctl_threshold, _field) 2991 static const struct snl_attr_parser ap_pfctl_threshold[] = { 2992 { .type = PF_TH_LIMIT, .off = _OUT(limit), .cb = snl_attr_get_uint32 }, 2993 { .type = PF_TH_SECONDS, .off = _OUT(seconds), .cb = snl_attr_get_uint32 }, 2994 { .type = PF_TH_COUNT, .off = _OUT(count), .cb = snl_attr_get_uint32 }, 2995 { .type = PF_TH_LAST, .off = _OUT(last), .cb = snl_attr_get_uint32 }, 2996 }; 2997 SNL_DECLARE_ATTR_PARSER(pfctl_threshold_parser, ap_pfctl_threshold); 2998 #undef _OUT 2999 3000 #define _OUT(_field) offsetof(struct pfctl_src_node, _field) 3001 static struct snl_attr_parser ap_srcnode[] = { 3002 { .type = PF_SN_ADDR, .off = _OUT(addr), .cb = snl_attr_get_in6_addr }, 3003 { .type = PF_SN_RADDR, .off = _OUT(raddr), .cb = snl_attr_get_in6_addr }, 3004 { .type = PF_SN_RULE_NR, .off = _OUT(rule), .cb = snl_attr_get_uint32 }, 3005 { .type = PF_SN_BYTES_IN, .off = _OUT(bytes[0]), .cb = snl_attr_get_uint64 }, 3006 { .type = PF_SN_BYTES_OUT, .off = _OUT(bytes[1]), .cb = snl_attr_get_uint64 }, 3007 { .type = PF_SN_PACKETS_IN, .off = _OUT(packets[0]), .cb = snl_attr_get_uint64 }, 3008 { .type = PF_SN_PACKETS_OUT, .off = _OUT(packets[1]), .cb = snl_attr_get_uint64 }, 3009 { .type = PF_SN_STATES, .off = _OUT(states), .cb = snl_attr_get_uint32 }, 3010 { .type = PF_SN_CONNECTIONS, .off = _OUT(conn), .cb = snl_attr_get_uint32 }, 3011 { .type = PF_SN_AF, .off = _OUT(af), .cb = snl_attr_get_uint8 }, 3012 { .type = PF_SN_RULE_TYPE, .off = _OUT(ruletype), .cb = snl_attr_get_uint8 }, 3013 { .type = PF_SN_CREATION, .off = _OUT(creation), .cb = snl_attr_get_uint64 }, 3014 { .type = PF_SN_EXPIRE, .off = _OUT(expire), .cb = snl_attr_get_uint64 }, 3015 { .type = PF_SN_CONNECTION_RATE, .off = _OUT(conn_rate), .arg = &pfctl_threshold_parser, .cb = snl_attr_get_nested }, 3016 { .type = PF_SN_NAF, .off = _OUT(naf), .cb = snl_attr_get_uint8 }, 3017 }; 3018 #undef _OUT 3019 SNL_DECLARE_PARSER(srcnode_parser, struct genlmsghdr, snl_f_p_empty, ap_srcnode); 3020 3021 int 3022 pfctl_get_srcnodes(struct pfctl_handle *h, pfctl_get_srcnode_fn fn, void *arg) 3023 { 3024 struct snl_writer nw; 3025 struct pfctl_src_node sn; 3026 struct snl_errmsg_data e = {}; 3027 struct nlmsghdr *hdr; 3028 uint32_t seq_id; 3029 int family_id; 3030 int ret; 3031 3032 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME); 3033 if (family_id == 0) 3034 return (ENOTSUP); 3035 3036 snl_init_writer(&h->ss, &nw); 3037 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GET_SRCNODES); 3038 3039 if ((hdr = snl_finalize_msg(&nw)) == NULL) 3040 return (ENXIO); 3041 3042 seq_id = hdr->nlmsg_seq; 3043 3044 if (!snl_send_message(&h->ss, hdr)) 3045 return (ENXIO); 3046 3047 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) { 3048 if (!snl_parse_nlmsg(&h->ss, hdr, &srcnode_parser, &sn)) 3049 continue; 3050 3051 ret = fn(&sn, arg); 3052 if (ret != 0) 3053 return (ret); 3054 } 3055 3056 return (e.error); 3057 } 3058 3059 static struct snl_attr_parser ap_ndel[] = { 3060 { .type = PF_T_NBR_DELETED, .off = 0, .cb = snl_attr_get_uint32 }, 3061 }; 3062 SNL_DECLARE_PARSER(ndel_parser, struct genlmsghdr, snl_f_p_empty, ap_ndel); 3063 3064 int 3065 pfctl_clear_tables(struct pfctl_handle *h, struct pfr_table *filter, 3066 int *ndel, int flags) 3067 { 3068 struct snl_writer nw; 3069 struct snl_errmsg_data e = {}; 3070 struct nlmsghdr *hdr; 3071 uint32_t seq_id; 3072 int family_id; 3073 3074 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME); 3075 if (family_id == 0) 3076 return (ENOTSUP); 3077 3078 snl_init_writer(&h->ss, &nw); 3079 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_CLEAR_TABLES); 3080 3081 snl_add_msg_attr_string(&nw, PF_T_ANCHOR, filter->pfrt_anchor); 3082 snl_add_msg_attr_string(&nw, PF_T_NAME, filter->pfrt_name); 3083 snl_add_msg_attr_u32(&nw, PF_T_TABLE_FLAGS, filter->pfrt_flags); 3084 snl_add_msg_attr_u32(&nw, PF_T_FLAGS, flags); 3085 3086 if ((hdr = snl_finalize_msg(&nw)) == NULL) 3087 return (ENXIO); 3088 3089 seq_id = hdr->nlmsg_seq; 3090 3091 if (!snl_send_message(&h->ss, hdr)) 3092 return (ENXIO); 3093 3094 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) { 3095 if (!snl_parse_nlmsg(&h->ss, hdr, &ndel_parser, ndel)) 3096 continue; 3097 } 3098 3099 return (e.error); 3100 } 3101