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) 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_threshold(struct snl_writer *nw, uint32_t type, const struct pfctl_threshold *th) 1213 { 1214 int off; 1215 1216 off = snl_add_msg_attr_nested(nw, type); 1217 1218 snl_add_msg_attr_u32(nw, PF_TH_LIMIT, th->limit); 1219 snl_add_msg_attr_u32(nw, PF_TH_SECONDS, th->seconds); 1220 1221 snl_end_attr_nested(nw, off); 1222 } 1223 1224 static void 1225 snl_add_msg_attr_pf_rule(struct snl_writer *nw, uint32_t type, const struct pfctl_rule *r) 1226 { 1227 int off; 1228 1229 off = snl_add_msg_attr_nested(nw, type); 1230 1231 snl_add_msg_attr_rule_addr(nw, PF_RT_SRC, &r->src); 1232 snl_add_msg_attr_rule_addr(nw, PF_RT_DST, &r->dst); 1233 snl_add_msg_attr_rule_labels(nw, PF_RT_LABELS, r->label); 1234 snl_add_msg_attr_u32(nw, PF_RT_RIDENTIFIER, r->ridentifier); 1235 snl_add_msg_attr_string(nw, PF_RT_IFNAME, r->ifname); 1236 snl_add_msg_attr_string(nw, PF_RT_QNAME, r->qname); 1237 snl_add_msg_attr_string(nw, PF_RT_PQNAME, r->pqname); 1238 snl_add_msg_attr_string(nw, PF_RT_TAGNAME, r->tagname); 1239 snl_add_msg_attr_string(nw, PF_RT_MATCH_TAGNAME, r->match_tagname); 1240 snl_add_msg_attr_string(nw, PF_RT_OVERLOAD_TBLNAME, r->overload_tblname); 1241 snl_add_msg_attr_rpool(nw, PF_RT_RPOOL_RDR, &r->rdr); 1242 snl_add_msg_attr_rpool(nw, PF_RT_RPOOL_NAT, &r->nat); 1243 snl_add_msg_attr_rpool(nw, PF_RT_RPOOL_RT, &r->route); 1244 snl_add_msg_attr_threshold(nw, PF_RT_PKTRATE, &r->pktrate); 1245 snl_add_msg_attr_u32(nw, PF_RT_OS_FINGERPRINT, r->os_fingerprint); 1246 snl_add_msg_attr_u32(nw, PF_RT_RTABLEID, r->rtableid); 1247 snl_add_msg_attr_timeouts(nw, PF_RT_TIMEOUT, r->timeout); 1248 snl_add_msg_attr_u32(nw, PF_RT_MAX_STATES, r->max_states); 1249 snl_add_msg_attr_u32(nw, PF_RT_MAX_SRC_NODES, r->max_src_nodes); 1250 snl_add_msg_attr_u32(nw, PF_RT_MAX_SRC_STATES, r->max_src_states); 1251 snl_add_msg_attr_u32(nw, PF_RT_MAX_SRC_CONN, r->max_src_conn); 1252 snl_add_msg_attr_u32(nw, PF_RT_MAX_SRC_CONN_RATE_LIMIT, r->max_src_conn_rate.limit); 1253 snl_add_msg_attr_u32(nw, PF_RT_MAX_SRC_CONN_RATE_SECS, r->max_src_conn_rate.seconds); 1254 1255 snl_add_msg_attr_u16(nw, PF_RT_DNPIPE, r->dnpipe); 1256 snl_add_msg_attr_u16(nw, PF_RT_DNRPIPE, r->dnrpipe); 1257 snl_add_msg_attr_u32(nw, PF_RT_DNFLAGS, r->free_flags); 1258 1259 snl_add_msg_attr_u32(nw, PF_RT_NR, r->nr); 1260 snl_add_msg_attr_u32(nw, PF_RT_PROB, r->prob); 1261 snl_add_msg_attr_u32(nw, PF_RT_CUID, r->cuid); 1262 snl_add_msg_attr_u32(nw, PF_RT_CPID, r->cpid); 1263 1264 snl_add_msg_attr_u16(nw, PF_RT_RETURN_ICMP, r->return_icmp); 1265 snl_add_msg_attr_u16(nw, PF_RT_RETURN_ICMP6, r->return_icmp6); 1266 snl_add_msg_attr_u16(nw, PF_RT_MAX_MSS, r->max_mss); 1267 snl_add_msg_attr_u16(nw, PF_RT_SCRUB_FLAGS, r->scrub_flags); 1268 1269 snl_add_msg_attr_uid(nw, PF_RT_UID, &r->uid); 1270 snl_add_msg_attr_uid(nw, PF_RT_GID, (const struct pf_rule_uid *)&r->gid); 1271 snl_add_msg_attr_string(nw, PF_RT_RCV_IFNAME, r->rcv_ifname); 1272 snl_add_msg_attr_bool(nw, PF_RT_RCV_IFNOT, r->rcvifnot); 1273 1274 snl_add_msg_attr_u32(nw, PF_RT_RULE_FLAG, r->rule_flag); 1275 snl_add_msg_attr_u8(nw, PF_RT_ACTION, r->action); 1276 snl_add_msg_attr_u8(nw, PF_RT_DIRECTION, r->direction); 1277 snl_add_msg_attr_u8(nw, PF_RT_LOG, r->log); 1278 snl_add_msg_attr_u8(nw, PF_RT_LOGIF, r->logif); 1279 snl_add_msg_attr_u8(nw, PF_RT_QUICK, r->quick); 1280 snl_add_msg_attr_u8(nw, PF_RT_IF_NOT, r->ifnot); 1281 snl_add_msg_attr_u8(nw, PF_RT_MATCH_TAG_NOT, r->match_tag_not); 1282 snl_add_msg_attr_u8(nw, PF_RT_NATPASS, r->natpass); 1283 snl_add_msg_attr_u8(nw, PF_RT_KEEP_STATE, r->keep_state); 1284 snl_add_msg_attr_u8(nw, PF_RT_AF, r->af); 1285 snl_add_msg_attr_u8(nw, PF_RT_PROTO, r->proto); 1286 snl_add_msg_attr_u8(nw, PF_RT_TYPE, r->type); 1287 snl_add_msg_attr_u8(nw, PF_RT_CODE, r->code); 1288 snl_add_msg_attr_u8(nw, PF_RT_FLAGS, r->flags); 1289 snl_add_msg_attr_u8(nw, PF_RT_FLAGSET, r->flagset); 1290 snl_add_msg_attr_u8(nw, PF_RT_MIN_TTL, r->min_ttl); 1291 snl_add_msg_attr_u8(nw, PF_RT_ALLOW_OPTS, r->allow_opts); 1292 snl_add_msg_attr_u8(nw, PF_RT_RT, r->rt); 1293 snl_add_msg_attr_u8(nw, PF_RT_RETURN_TTL, r->return_ttl); 1294 snl_add_msg_attr_u8(nw, PF_RT_TOS, r->tos); 1295 snl_add_msg_attr_u8(nw, PF_RT_SET_TOS, r->set_tos); 1296 1297 snl_add_msg_attr_u8(nw, PF_RT_ANCHOR_RELATIVE, r->anchor_relative); 1298 snl_add_msg_attr_u8(nw, PF_RT_ANCHOR_WILDCARD, r->anchor_wildcard); 1299 snl_add_msg_attr_u8(nw, PF_RT_FLUSH, r->flush); 1300 snl_add_msg_attr_u8(nw, PF_RT_PRIO, r->prio); 1301 snl_add_msg_attr_u8(nw, PF_RT_SET_PRIO, r->set_prio[0]); 1302 snl_add_msg_attr_u8(nw, PF_RT_SET_PRIO_REPLY, r->set_prio[1]); 1303 snl_add_msg_attr_u8(nw, PF_RT_NAF, r->naf); 1304 1305 snl_add_msg_attr_ip6(nw, PF_RT_DIVERT_ADDRESS, &r->divert.addr.v6); 1306 snl_add_msg_attr_u16(nw, PF_RT_DIVERT_PORT, r->divert.port); 1307 1308 snl_end_attr_nested(nw, off); 1309 } 1310 1311 int 1312 pfctl_add_rule(int dev __unused, const struct pfctl_rule *r, const char *anchor, 1313 const char *anchor_call, uint32_t ticket, uint32_t pool_ticket) 1314 { 1315 struct pfctl_handle *h; 1316 int ret; 1317 1318 h = pfctl_open(PF_DEVICE); 1319 if (h == NULL) 1320 return (ENODEV); 1321 1322 ret = pfctl_add_rule_h(h, r, anchor, anchor_call, ticket, pool_ticket); 1323 1324 pfctl_close(h); 1325 1326 return (ret); 1327 } 1328 1329 int 1330 pfctl_add_rule_h(struct pfctl_handle *h, const struct pfctl_rule *r, 1331 const char *anchor, const char *anchor_call, uint32_t ticket, 1332 uint32_t pool_ticket) 1333 { 1334 struct snl_writer nw; 1335 struct snl_errmsg_data e = {}; 1336 struct nlmsghdr *hdr; 1337 uint32_t seq_id; 1338 int family_id; 1339 1340 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME); 1341 if (family_id == 0) 1342 return (ENOTSUP); 1343 1344 snl_init_writer(&h->ss, &nw); 1345 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_ADDRULE); 1346 hdr->nlmsg_flags |= NLM_F_DUMP; 1347 snl_add_msg_attr_u32(&nw, PF_ART_TICKET, ticket); 1348 snl_add_msg_attr_u32(&nw, PF_ART_POOL_TICKET, pool_ticket); 1349 snl_add_msg_attr_string(&nw, PF_ART_ANCHOR, anchor); 1350 snl_add_msg_attr_string(&nw, PF_ART_ANCHOR_CALL, anchor_call); 1351 1352 snl_add_msg_attr_pf_rule(&nw, PF_ART_RULE, r); 1353 1354 if ((hdr = snl_finalize_msg(&nw)) == NULL) 1355 return (ENXIO); 1356 1357 seq_id = hdr->nlmsg_seq; 1358 1359 if (! snl_send_message(&h->ss, hdr)) 1360 return (ENXIO); 1361 1362 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) { 1363 } 1364 1365 return (e.error); 1366 } 1367 1368 #define _IN(_field) offsetof(struct genlmsghdr, _field) 1369 #define _OUT(_field) offsetof(struct pfctl_rules_info, _field) 1370 static struct snl_attr_parser ap_getrules[] = { 1371 { .type = PF_GR_NR, .off = _OUT(nr), .cb = snl_attr_get_uint32 }, 1372 { .type = PF_GR_TICKET, .off = _OUT(ticket), .cb = snl_attr_get_uint32 }, 1373 }; 1374 #undef _IN 1375 #undef _OUT 1376 SNL_DECLARE_PARSER(getrules_parser, struct genlmsghdr, snl_f_p_empty, ap_getrules); 1377 1378 int 1379 pfctl_get_rules_info_h(struct pfctl_handle *h, struct pfctl_rules_info *rules, uint32_t ruleset, 1380 const char *path) 1381 { 1382 struct snl_errmsg_data e = {}; 1383 struct nlmsghdr *hdr; 1384 struct snl_writer nw; 1385 uint32_t seq_id; 1386 int family_id; 1387 1388 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME); 1389 if (family_id == 0) 1390 return (ENOTSUP); 1391 1392 snl_init_writer(&h->ss, &nw); 1393 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GETRULES); 1394 hdr->nlmsg_flags |= NLM_F_DUMP; 1395 1396 snl_add_msg_attr_string(&nw, PF_GR_ANCHOR, path); 1397 snl_add_msg_attr_u8(&nw, PF_GR_ACTION, ruleset); 1398 1399 hdr = snl_finalize_msg(&nw); 1400 if (hdr == NULL) 1401 return (ENOMEM); 1402 1403 seq_id = hdr->nlmsg_seq; 1404 if (! snl_send_message(&h->ss, hdr)) 1405 return (ENXIO); 1406 1407 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) { 1408 if (! snl_parse_nlmsg(&h->ss, hdr, &getrules_parser, rules)) 1409 continue; 1410 } 1411 1412 return (e.error); 1413 } 1414 1415 int 1416 pfctl_get_rules_info(int dev __unused, struct pfctl_rules_info *rules, uint32_t ruleset, 1417 const char *path) 1418 { 1419 struct pfctl_handle *h; 1420 int error; 1421 1422 h = pfctl_open(PF_DEVICE); 1423 if (h == NULL) 1424 return (ENOTSUP); 1425 error = pfctl_get_rules_info_h(h, rules, ruleset, path); 1426 pfctl_close(h); 1427 1428 return (error); 1429 } 1430 1431 int 1432 pfctl_get_rule_h(struct pfctl_handle *h, uint32_t nr, uint32_t ticket, const char *anchor, 1433 uint32_t ruleset, struct pfctl_rule *rule, char *anchor_call) 1434 { 1435 return (pfctl_get_clear_rule_h(h, nr, ticket, anchor, ruleset, rule, 1436 anchor_call, false)); 1437 } 1438 1439 int 1440 pfctl_get_rule(int dev, uint32_t nr, uint32_t ticket, const char *anchor, 1441 uint32_t ruleset, struct pfctl_rule *rule, char *anchor_call) 1442 { 1443 return (pfctl_get_clear_rule(dev, nr, ticket, anchor, ruleset, rule, 1444 anchor_call, false)); 1445 } 1446 1447 #define _OUT(_field) offsetof(struct pf_addr_wrap, _field) 1448 static const struct snl_attr_parser ap_addr_wrap[] = { 1449 { .type = PF_AT_ADDR, .off = _OUT(v.a.addr), .cb = snl_attr_get_in6_addr }, 1450 { .type = PF_AT_MASK, .off = _OUT(v.a.mask), .cb = snl_attr_get_in6_addr }, 1451 { .type = PF_AT_IFNAME, .off = _OUT(v.ifname), .arg = (void *)IFNAMSIZ,.cb = snl_attr_copy_string }, 1452 { .type = PF_AT_TABLENAME, .off = _OUT(v.tblname), .arg = (void *)PF_TABLE_NAME_SIZE, .cb = snl_attr_copy_string }, 1453 { .type = PF_AT_TYPE, .off = _OUT(type), .cb = snl_attr_get_uint8 }, 1454 { .type = PF_AT_IFLAGS, .off = _OUT(iflags), .cb = snl_attr_get_uint8 }, 1455 { .type = PF_AT_TBLCNT, .off = _OUT(p.tblcnt), .cb = snl_attr_get_uint32 }, 1456 { .type = PF_AT_DYNCNT, .off = _OUT(p.dyncnt), .cb = snl_attr_get_uint32 }, 1457 }; 1458 SNL_DECLARE_ATTR_PARSER(addr_wrap_parser, ap_addr_wrap); 1459 #undef _OUT 1460 1461 #define _OUT(_field) offsetof(struct pf_rule_addr, _field) 1462 static struct snl_attr_parser ap_rule_addr[] = { 1463 { .type = PF_RAT_ADDR, .off = _OUT(addr), .arg = &addr_wrap_parser, .cb = snl_attr_get_nested }, 1464 { .type = PF_RAT_SRC_PORT, .off = _OUT(port[0]), .cb = snl_attr_get_uint16 }, 1465 { .type = PF_RAT_DST_PORT, .off = _OUT(port[1]), .cb = snl_attr_get_uint16 }, 1466 { .type = PF_RAT_NEG, .off = _OUT(neg), .cb = snl_attr_get_uint8 }, 1467 { .type = PF_RAT_OP, .off = _OUT(port_op), .cb = snl_attr_get_uint8 }, 1468 }; 1469 #undef _OUT 1470 SNL_DECLARE_ATTR_PARSER(rule_addr_parser, ap_rule_addr); 1471 1472 struct snl_parsed_labels 1473 { 1474 char labels[PF_RULE_MAX_LABEL_COUNT][PF_RULE_LABEL_SIZE]; 1475 uint32_t i; 1476 }; 1477 1478 static bool 1479 snl_attr_get_pf_rule_labels(struct snl_state *ss, struct nlattr *nla, 1480 const void *arg __unused, void *target) 1481 { 1482 struct snl_parsed_labels *l = (struct snl_parsed_labels *)target; 1483 bool ret; 1484 1485 if (l->i >= PF_RULE_MAX_LABEL_COUNT) 1486 return (E2BIG); 1487 1488 ret = snl_attr_copy_string(ss, nla, (void *)PF_RULE_LABEL_SIZE, 1489 l->labels[l->i]); 1490 if (ret) 1491 l->i++; 1492 1493 return (ret); 1494 } 1495 1496 #define _OUT(_field) offsetof(struct nl_parsed_labels, _field) 1497 static const struct snl_attr_parser ap_labels[] = { 1498 { .type = PF_LT_LABEL, .off = 0, .cb = snl_attr_get_pf_rule_labels }, 1499 }; 1500 SNL_DECLARE_ATTR_PARSER(rule_labels_parser, ap_labels); 1501 #undef _OUT 1502 1503 static bool 1504 snl_attr_get_nested_pf_rule_labels(struct snl_state *ss, struct nlattr *nla, 1505 const void *arg __unused, void *target) 1506 { 1507 struct snl_parsed_labels parsed_labels = { }; 1508 bool error; 1509 1510 /* Assumes target points to the beginning of the structure */ 1511 error = snl_parse_header(ss, NLA_DATA(nla), NLA_DATA_LEN(nla), &rule_labels_parser, &parsed_labels); 1512 if (! error) 1513 return (error); 1514 1515 memcpy(target, parsed_labels.labels, sizeof(parsed_labels.labels)); 1516 1517 return (true); 1518 } 1519 1520 #define _OUT(_field) offsetof(struct pf_mape_portset, _field) 1521 static const struct snl_attr_parser ap_mape_portset[] = { 1522 { .type = PF_MET_OFFSET, .off = _OUT(offset), .cb = snl_attr_get_uint8 }, 1523 { .type = PF_MET_PSID_LEN, .off = _OUT(psidlen), .cb = snl_attr_get_uint8 }, 1524 {. type = PF_MET_PSID, .off = _OUT(psid), .cb = snl_attr_get_uint16 }, 1525 }; 1526 SNL_DECLARE_ATTR_PARSER(mape_portset_parser, ap_mape_portset); 1527 #undef _OUT 1528 1529 #define _OUT(_field) offsetof(struct pfctl_pool, _field) 1530 static const struct snl_attr_parser ap_pool[] = { 1531 { .type = PF_PT_KEY, .off = _OUT(key), .arg = (void *)sizeof(struct pf_poolhashkey), .cb = snl_attr_get_bytes }, 1532 { .type = PF_PT_COUNTER, .off = _OUT(counter), .cb = snl_attr_get_in6_addr }, 1533 { .type = PF_PT_TBLIDX, .off = _OUT(tblidx), .cb = snl_attr_get_uint32 }, 1534 { .type = PF_PT_PROXY_SRC_PORT, .off = _OUT(proxy_port[0]), .cb = snl_attr_get_uint16 }, 1535 { .type = PF_PT_PROXY_DST_PORT, .off = _OUT(proxy_port[1]), .cb = snl_attr_get_uint16 }, 1536 { .type = PF_PT_OPTS, .off = _OUT(opts), .cb = snl_attr_get_uint8 }, 1537 { .type = PF_PT_MAPE, .off = _OUT(mape), .arg = &mape_portset_parser, .cb = snl_attr_get_nested }, 1538 }; 1539 SNL_DECLARE_ATTR_PARSER(pool_parser, ap_pool); 1540 #undef _OUT 1541 1542 struct nl_parsed_timeouts 1543 { 1544 uint32_t timeouts[PFTM_MAX]; 1545 uint32_t i; 1546 }; 1547 1548 static bool 1549 snl_attr_get_pf_timeout(struct snl_state *ss, struct nlattr *nla, 1550 const void *arg __unused, void *target) 1551 { 1552 struct nl_parsed_timeouts *t = (struct nl_parsed_timeouts *)target; 1553 bool ret; 1554 1555 if (t->i >= PFTM_MAX) 1556 return (E2BIG); 1557 1558 ret = snl_attr_get_uint32(ss, nla, NULL, &t->timeouts[t->i]); 1559 if (ret) 1560 t->i++; 1561 1562 return (ret); 1563 } 1564 1565 #define _OUT(_field) offsetof(struct nl_parsed_timeout, _field) 1566 static const struct snl_attr_parser ap_timeouts[] = { 1567 { .type = PF_TT_TIMEOUT, .off = 0, .cb = snl_attr_get_pf_timeout }, 1568 }; 1569 SNL_DECLARE_ATTR_PARSER(timeout_parser, ap_timeouts); 1570 #undef _OUT 1571 1572 static bool 1573 snl_attr_get_nested_timeouts(struct snl_state *ss, struct nlattr *nla, 1574 const void *arg __unused, void *target) 1575 { 1576 struct nl_parsed_timeouts parsed_timeouts = { }; 1577 bool error; 1578 1579 /* Assumes target points to the beginning of the structure */ 1580 error = snl_parse_header(ss, NLA_DATA(nla), NLA_DATA_LEN(nla), &timeout_parser, &parsed_timeouts); 1581 if (! error) 1582 return (error); 1583 1584 memcpy(target, parsed_timeouts.timeouts, sizeof(parsed_timeouts.timeouts)); 1585 1586 return (true); 1587 } 1588 1589 #define _OUT(_field) offsetof(struct pf_rule_uid, _field) 1590 static const struct snl_attr_parser ap_rule_uid[] = { 1591 { .type = PF_RUT_UID_LOW, .off = _OUT(uid[0]), .cb = snl_attr_get_uint32 }, 1592 { .type = PF_RUT_UID_HIGH, .off = _OUT(uid[1]), .cb = snl_attr_get_uint32 }, 1593 { .type = PF_RUT_OP, .off = _OUT(op), .cb = snl_attr_get_uint8 }, 1594 }; 1595 SNL_DECLARE_ATTR_PARSER(rule_uid_parser, ap_rule_uid); 1596 #undef _OUT 1597 1598 #define _OUT(_field) offsetof(struct pfctl_threshold, _field) 1599 static const struct snl_attr_parser ap_pfctl_threshold[] = { 1600 { .type = PF_TH_LIMIT, .off = _OUT(limit), .cb = snl_attr_get_uint32 }, 1601 { .type = PF_TH_SECONDS, .off = _OUT(seconds), .cb = snl_attr_get_uint32 }, 1602 { .type = PF_TH_COUNT, .off = _OUT(count), .cb = snl_attr_get_uint32 }, 1603 }; 1604 SNL_DECLARE_ATTR_PARSER(pfctl_threshold_parser, ap_pfctl_threshold); 1605 #undef _OUT 1606 1607 struct pfctl_nl_get_rule { 1608 struct pfctl_rule r; 1609 char anchor_call[MAXPATHLEN]; 1610 }; 1611 #define _OUT(_field) offsetof(struct pfctl_nl_get_rule, _field) 1612 static struct snl_attr_parser ap_getrule[] = { 1613 { .type = PF_RT_SRC, .off = _OUT(r.src), .arg = &rule_addr_parser,.cb = snl_attr_get_nested }, 1614 { .type = PF_RT_DST, .off = _OUT(r.dst), .arg = &rule_addr_parser,.cb = snl_attr_get_nested }, 1615 { .type = PF_RT_RIDENTIFIER, .off = _OUT(r.ridentifier), .cb = snl_attr_get_uint32 }, 1616 { .type = PF_RT_LABELS, .off = _OUT(r.label), .arg = &rule_labels_parser,.cb = snl_attr_get_nested_pf_rule_labels }, 1617 { .type = PF_RT_IFNAME, .off = _OUT(r.ifname), .arg = (void *)IFNAMSIZ, .cb = snl_attr_copy_string }, 1618 { .type = PF_RT_QNAME, .off = _OUT(r.qname), .arg = (void *)PF_QNAME_SIZE, .cb = snl_attr_copy_string }, 1619 { .type = PF_RT_PQNAME, .off = _OUT(r.pqname), .arg = (void *)PF_QNAME_SIZE, .cb = snl_attr_copy_string }, 1620 { .type = PF_RT_TAGNAME, .off = _OUT(r.tagname), .arg = (void *)PF_TAG_NAME_SIZE, .cb = snl_attr_copy_string }, 1621 { .type = PF_RT_MATCH_TAGNAME, .off = _OUT(r.match_tagname), .arg = (void *)PF_TAG_NAME_SIZE, .cb = snl_attr_copy_string }, 1622 { .type = PF_RT_OVERLOAD_TBLNAME, .off = _OUT(r.overload_tblname), .arg = (void *)PF_TABLE_NAME_SIZE, .cb = snl_attr_copy_string }, 1623 { .type = PF_RT_RPOOL_RDR, .off = _OUT(r.rdr), .arg = &pool_parser, .cb = snl_attr_get_nested }, 1624 { .type = PF_RT_OS_FINGERPRINT, .off = _OUT(r.os_fingerprint), .cb = snl_attr_get_uint32 }, 1625 { .type = PF_RT_RTABLEID, .off = _OUT(r.rtableid), .cb = snl_attr_get_uint32 }, 1626 { .type = PF_RT_TIMEOUT, .off = _OUT(r.timeout), .arg = &timeout_parser, .cb = snl_attr_get_nested_timeouts }, 1627 { .type = PF_RT_MAX_STATES, .off = _OUT(r.max_states), .cb = snl_attr_get_uint32 }, 1628 { .type = PF_RT_MAX_SRC_NODES, .off = _OUT(r.max_src_nodes), .cb = snl_attr_get_uint32 }, 1629 { .type = PF_RT_MAX_SRC_STATES, .off = _OUT(r.max_src_states), .cb = snl_attr_get_uint32 }, 1630 { .type = PF_RT_MAX_SRC_CONN_RATE_LIMIT, .off = _OUT(r.max_src_conn_rate.limit), .cb = snl_attr_get_uint32 }, 1631 { .type = PF_RT_MAX_SRC_CONN_RATE_SECS, .off = _OUT(r.max_src_conn_rate.seconds), .cb = snl_attr_get_uint32 }, 1632 { .type = PF_RT_DNPIPE, .off = _OUT(r.dnpipe), .cb = snl_attr_get_uint16 }, 1633 { .type = PF_RT_DNRPIPE, .off = _OUT(r.dnrpipe), .cb = snl_attr_get_uint16 }, 1634 { .type = PF_RT_DNFLAGS, .off = _OUT(r.free_flags), .cb = snl_attr_get_uint32 }, 1635 { .type = PF_RT_NR, .off = _OUT(r.nr), .cb = snl_attr_get_uint32 }, 1636 { .type = PF_RT_PROB, .off = _OUT(r.prob), .cb = snl_attr_get_uint32 }, 1637 { .type = PF_RT_CUID, .off = _OUT(r.cuid), .cb = snl_attr_get_uint32 }, 1638 {. type = PF_RT_CPID, .off = _OUT(r.cpid), .cb = snl_attr_get_uint32 }, 1639 { .type = PF_RT_RETURN_ICMP, .off = _OUT(r.return_icmp), .cb = snl_attr_get_uint16 }, 1640 { .type = PF_RT_RETURN_ICMP6, .off = _OUT(r.return_icmp6), .cb = snl_attr_get_uint16 }, 1641 { .type = PF_RT_MAX_MSS, .off = _OUT(r.max_mss), .cb = snl_attr_get_uint16 }, 1642 { .type = PF_RT_SCRUB_FLAGS, .off = _OUT(r.scrub_flags), .cb = snl_attr_get_uint16 }, 1643 { .type = PF_RT_UID, .off = _OUT(r.uid), .arg = &rule_uid_parser, .cb = snl_attr_get_nested }, 1644 { .type = PF_RT_GID, .off = _OUT(r.gid), .arg = &rule_uid_parser, .cb = snl_attr_get_nested }, 1645 { .type = PF_RT_RULE_FLAG, .off = _OUT(r.rule_flag), .cb = snl_attr_get_uint32 }, 1646 { .type = PF_RT_ACTION, .off = _OUT(r.action), .cb = snl_attr_get_uint8 }, 1647 { .type = PF_RT_DIRECTION, .off = _OUT(r.direction), .cb = snl_attr_get_uint8 }, 1648 { .type = PF_RT_LOG, .off = _OUT(r.log), .cb = snl_attr_get_uint8 }, 1649 { .type = PF_RT_LOGIF, .off = _OUT(r.logif), .cb = snl_attr_get_uint8 }, 1650 { .type = PF_RT_QUICK, .off = _OUT(r.quick), .cb = snl_attr_get_uint8 }, 1651 { .type = PF_RT_IF_NOT, .off = _OUT(r.ifnot), .cb = snl_attr_get_uint8 }, 1652 { .type = PF_RT_MATCH_TAG_NOT, .off = _OUT(r.match_tag_not), .cb = snl_attr_get_uint8 }, 1653 { .type = PF_RT_NATPASS, .off = _OUT(r.natpass), .cb = snl_attr_get_uint8 }, 1654 { .type = PF_RT_KEEP_STATE, .off = _OUT(r.keep_state), .cb = snl_attr_get_uint8 }, 1655 { .type = PF_RT_AF, .off = _OUT(r.af), .cb = snl_attr_get_uint8 }, 1656 { .type = PF_RT_PROTO, .off = _OUT(r.proto), .cb = snl_attr_get_uint8 }, 1657 { .type = PF_RT_TYPE, .off = _OUT(r.type), .cb = snl_attr_get_uint8 }, 1658 { .type = PF_RT_CODE, .off = _OUT(r.code), .cb = snl_attr_get_uint8 }, 1659 { .type = PF_RT_FLAGS, .off = _OUT(r.flags), .cb = snl_attr_get_uint8 }, 1660 { .type = PF_RT_FLAGSET, .off = _OUT(r.flagset), .cb = snl_attr_get_uint8 }, 1661 { .type = PF_RT_MIN_TTL, .off = _OUT(r.min_ttl), .cb = snl_attr_get_uint8 }, 1662 { .type = PF_RT_ALLOW_OPTS, .off = _OUT(r.allow_opts), .cb = snl_attr_get_uint8 }, 1663 { .type = PF_RT_RT, .off = _OUT(r.rt), .cb = snl_attr_get_uint8 }, 1664 { .type = PF_RT_RETURN_TTL, .off = _OUT(r.return_ttl), .cb = snl_attr_get_uint8 }, 1665 { .type = PF_RT_TOS, .off = _OUT(r.tos), .cb = snl_attr_get_uint8 }, 1666 { .type = PF_RT_SET_TOS, .off = _OUT(r.set_tos), .cb = snl_attr_get_uint8 }, 1667 { .type = PF_RT_ANCHOR_RELATIVE, .off = _OUT(r.anchor_relative), .cb = snl_attr_get_uint8 }, 1668 { .type = PF_RT_ANCHOR_WILDCARD, .off = _OUT(r.anchor_wildcard), .cb = snl_attr_get_uint8 }, 1669 { .type = PF_RT_FLUSH, .off = _OUT(r.flush), .cb = snl_attr_get_uint8 }, 1670 { .type = PF_RT_PRIO, .off = _OUT(r.prio), .cb = snl_attr_get_uint8 }, 1671 { .type = PF_RT_SET_PRIO, .off = _OUT(r.set_prio[0]), .cb = snl_attr_get_uint8 }, 1672 { .type = PF_RT_SET_PRIO_REPLY, .off = _OUT(r.set_prio[1]), .cb = snl_attr_get_uint8 }, 1673 { .type = PF_RT_DIVERT_ADDRESS, .off = _OUT(r.divert.addr), .cb = snl_attr_get_in6_addr }, 1674 { .type = PF_RT_DIVERT_PORT, .off = _OUT(r.divert.port), .cb = snl_attr_get_uint16 }, 1675 { .type = PF_RT_PACKETS_IN, .off = _OUT(r.packets[0]), .cb = snl_attr_get_uint64 }, 1676 { .type = PF_RT_PACKETS_OUT, .off = _OUT(r.packets[1]), .cb = snl_attr_get_uint64 }, 1677 { .type = PF_RT_BYTES_IN, .off = _OUT(r.bytes[0]), .cb = snl_attr_get_uint64 }, 1678 { .type = PF_RT_BYTES_OUT, .off = _OUT(r.bytes[1]), .cb = snl_attr_get_uint64 }, 1679 { .type = PF_RT_EVALUATIONS, .off = _OUT(r.evaluations), .cb = snl_attr_get_uint64 }, 1680 { .type = PF_RT_TIMESTAMP, .off = _OUT(r.last_active_timestamp), .cb = snl_attr_get_uint64 }, 1681 { .type = PF_RT_STATES_CUR, .off = _OUT(r.states_cur), .cb = snl_attr_get_uint64 }, 1682 { .type = PF_RT_STATES_TOTAL, .off = _OUT(r.states_tot), .cb = snl_attr_get_uint64 }, 1683 { .type = PF_RT_SRC_NODES, .off = _OUT(r.src_nodes), .cb = snl_attr_get_uint64 }, 1684 { .type = PF_RT_ANCHOR_CALL, .off = _OUT(anchor_call), .arg = (void*)MAXPATHLEN, .cb = snl_attr_copy_string }, 1685 { .type = PF_RT_RCV_IFNAME, .off = _OUT(r.rcv_ifname), .arg = (void*)IFNAMSIZ, .cb = snl_attr_copy_string }, 1686 { .type = PF_RT_MAX_SRC_CONN, .off = _OUT(r.max_src_conn), .cb = snl_attr_get_uint32 }, 1687 { .type = PF_RT_RPOOL_NAT, .off = _OUT(r.nat), .arg = &pool_parser, .cb = snl_attr_get_nested }, 1688 { .type = PF_RT_NAF, .off = _OUT(r.naf), .cb = snl_attr_get_uint8 }, 1689 { .type = PF_RT_RPOOL_RT, .off = _OUT(r.route), .arg = &pool_parser, .cb = snl_attr_get_nested }, 1690 { .type = PF_RT_RCV_IFNOT, .off = _OUT(r.rcvifnot),.cb = snl_attr_get_bool }, 1691 { .type = PF_RT_SRC_NODES_LIMIT, .off = _OUT(r.src_nodes_type[PF_SN_LIMIT]), .cb = snl_attr_get_uint64 }, 1692 { .type = PF_RT_SRC_NODES_NAT, .off = _OUT(r.src_nodes_type[PF_SN_NAT]), .cb = snl_attr_get_uint64 }, 1693 { .type = PF_RT_SRC_NODES_ROUTE, .off = _OUT(r.src_nodes_type[PF_SN_ROUTE]), .cb = snl_attr_get_uint64 }, 1694 { .type = PF_RT_PKTRATE, .off = _OUT(r.pktrate), .arg = &pfctl_threshold_parser, .cb = snl_attr_get_nested }, 1695 }; 1696 #undef _OUT 1697 SNL_DECLARE_PARSER(getrule_parser, struct genlmsghdr, snl_f_p_empty, ap_getrule); 1698 1699 int 1700 pfctl_get_clear_rule_h(struct pfctl_handle *h, uint32_t nr, uint32_t ticket, 1701 const char *anchor, uint32_t ruleset, struct pfctl_rule *rule, 1702 char *anchor_call, bool clear) 1703 { 1704 struct pfctl_nl_get_rule attrs = {}; 1705 struct snl_errmsg_data e = {}; 1706 struct nlmsghdr *hdr; 1707 struct snl_writer nw; 1708 uint32_t seq_id; 1709 int family_id; 1710 1711 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME); 1712 if (family_id == 0) 1713 return (ENOTSUP); 1714 1715 snl_init_writer(&h->ss, &nw); 1716 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GETRULE); 1717 hdr->nlmsg_flags |= NLM_F_DUMP; 1718 1719 snl_add_msg_attr_string(&nw, PF_GR_ANCHOR, anchor); 1720 snl_add_msg_attr_u8(&nw, PF_GR_ACTION, ruleset); 1721 snl_add_msg_attr_u32(&nw, PF_GR_NR, nr); 1722 snl_add_msg_attr_u32(&nw, PF_GR_TICKET, ticket); 1723 snl_add_msg_attr_u8(&nw, PF_GR_CLEAR, clear); 1724 1725 hdr = snl_finalize_msg(&nw); 1726 if (hdr == NULL) 1727 return (ENOMEM); 1728 1729 seq_id = hdr->nlmsg_seq; 1730 if (! snl_send_message(&h->ss, hdr)) 1731 return (ENXIO); 1732 1733 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) { 1734 if (! snl_parse_nlmsg(&h->ss, hdr, &getrule_parser, &attrs)) 1735 continue; 1736 } 1737 1738 memcpy(rule, &attrs.r, sizeof(attrs.r)); 1739 strlcpy(anchor_call, attrs.anchor_call, MAXPATHLEN); 1740 1741 return (e.error); 1742 } 1743 1744 int 1745 pfctl_get_clear_rule(int dev, uint32_t nr, uint32_t ticket, 1746 const char *anchor, uint32_t ruleset, struct pfctl_rule *rule, 1747 char *anchor_call, bool clear) 1748 { 1749 nvlist_t *nvl; 1750 int ret; 1751 1752 nvl = nvlist_create(0); 1753 if (nvl == 0) 1754 return (ENOMEM); 1755 1756 nvlist_add_number(nvl, "nr", nr); 1757 nvlist_add_number(nvl, "ticket", ticket); 1758 nvlist_add_string(nvl, "anchor", anchor); 1759 nvlist_add_number(nvl, "ruleset", ruleset); 1760 1761 if (clear) 1762 nvlist_add_bool(nvl, "clear_counter", true); 1763 1764 if ((ret = pfctl_do_ioctl(dev, DIOCGETRULENV, 8192, &nvl)) != 0) 1765 goto out; 1766 1767 pf_nvrule_to_rule(nvlist_get_nvlist(nvl, "rule"), rule); 1768 1769 if (anchor_call) 1770 strlcpy(anchor_call, nvlist_get_string(nvl, "anchor_call"), 1771 MAXPATHLEN); 1772 1773 out: 1774 nvlist_destroy(nvl); 1775 return (ret); 1776 } 1777 1778 int 1779 pfctl_set_keepcounters(int dev, bool keep) 1780 { 1781 struct pfioc_nv nv; 1782 nvlist_t *nvl; 1783 int ret; 1784 1785 nvl = nvlist_create(0); 1786 1787 nvlist_add_bool(nvl, "keep_counters", keep); 1788 1789 nv.data = nvlist_pack(nvl, &nv.len); 1790 nv.size = nv.len; 1791 1792 nvlist_destroy(nvl); 1793 1794 ret = ioctl(dev, DIOCKEEPCOUNTERS, &nv); 1795 1796 free(nv.data); 1797 return (ret); 1798 } 1799 1800 struct pfctl_creator { 1801 uint32_t id; 1802 }; 1803 #define _IN(_field) offsetof(struct genlmsghdr, _field) 1804 #define _OUT(_field) offsetof(struct pfctl_creator, _field) 1805 static struct snl_attr_parser ap_creators[] = { 1806 { .type = PF_ST_CREATORID, .off = _OUT(id), .cb = snl_attr_get_uint32 }, 1807 }; 1808 #undef _IN 1809 #undef _OUT 1810 SNL_DECLARE_PARSER(creator_parser, struct genlmsghdr, snl_f_p_empty, ap_creators); 1811 1812 static int 1813 pfctl_get_creators_nl(struct snl_state *ss, uint32_t *creators, size_t *len) 1814 { 1815 1816 int family_id = snl_get_genl_family(ss, PFNL_FAMILY_NAME); 1817 size_t i = 0; 1818 1819 struct nlmsghdr *hdr; 1820 struct snl_writer nw; 1821 1822 if (family_id == 0) 1823 return (ENOTSUP); 1824 1825 snl_init_writer(ss, &nw); 1826 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GETCREATORS); 1827 hdr->nlmsg_flags |= NLM_F_DUMP; 1828 hdr = snl_finalize_msg(&nw); 1829 if (hdr == NULL) 1830 return (ENOMEM); 1831 uint32_t seq_id = hdr->nlmsg_seq; 1832 1833 snl_send_message(ss, hdr); 1834 1835 struct snl_errmsg_data e = {}; 1836 while ((hdr = snl_read_reply_multi(ss, seq_id, &e)) != NULL) { 1837 struct pfctl_creator c; 1838 bzero(&c, sizeof(c)); 1839 1840 if (!snl_parse_nlmsg(ss, hdr, &creator_parser, &c)) 1841 continue; 1842 1843 creators[i] = c.id; 1844 i++; 1845 if (i > *len) 1846 return (E2BIG); 1847 } 1848 1849 *len = i; 1850 1851 return (0); 1852 } 1853 1854 int 1855 pfctl_get_creatorids(struct pfctl_handle *h, uint32_t *creators, size_t *len) 1856 { 1857 int error; 1858 1859 error = pfctl_get_creators_nl(&h->ss, creators, len); 1860 1861 return (error); 1862 } 1863 1864 static inline bool 1865 snl_attr_get_pfaddr(struct snl_state *ss __unused, struct nlattr *nla, 1866 const void *arg __unused, void *target) 1867 { 1868 memcpy(target, NLA_DATA(nla), NLA_DATA_LEN(nla)); 1869 return (true); 1870 } 1871 1872 static inline bool 1873 snl_attr_store_ifname(struct snl_state *ss __unused, struct nlattr *nla, 1874 const void *arg __unused, void *target) 1875 { 1876 size_t maxlen = NLA_DATA_LEN(nla); 1877 1878 if (strnlen((char *)NLA_DATA(nla), maxlen) < maxlen) { 1879 strlcpy(target, (char *)NLA_DATA(nla), maxlen); 1880 return (true); 1881 } 1882 return (false); 1883 } 1884 1885 #define _OUT(_field) offsetof(struct pfctl_state_peer, _field) 1886 static const struct snl_attr_parser nla_p_speer[] = { 1887 { .type = PF_STP_SEQLO, .off = _OUT(seqlo), .cb = snl_attr_get_uint32 }, 1888 { .type = PF_STP_SEQHI, .off = _OUT(seqhi), .cb = snl_attr_get_uint32 }, 1889 { .type = PF_STP_SEQDIFF, .off = _OUT(seqdiff), .cb = snl_attr_get_uint32 }, 1890 { .type = PF_STP_STATE, .off = _OUT(state), .cb = snl_attr_get_uint8 }, 1891 { .type = PF_STP_WSCALE, .off = _OUT(wscale), .cb = snl_attr_get_uint8 }, 1892 }; 1893 SNL_DECLARE_ATTR_PARSER(speer_parser, nla_p_speer); 1894 #undef _OUT 1895 1896 #define _OUT(_field) offsetof(struct pfctl_state_key, _field) 1897 static const struct snl_attr_parser nla_p_skey[] = { 1898 { .type = PF_STK_ADDR0, .off = _OUT(addr[0]), .cb = snl_attr_get_pfaddr }, 1899 { .type = PF_STK_ADDR1, .off = _OUT(addr[1]), .cb = snl_attr_get_pfaddr }, 1900 { .type = PF_STK_PORT0, .off = _OUT(port[0]), .cb = snl_attr_get_uint16 }, 1901 { .type = PF_STK_PORT1, .off = _OUT(port[1]), .cb = snl_attr_get_uint16 }, 1902 { .type = PF_STK_AF, .off = _OUT(af), .cb = snl_attr_get_uint8 }, 1903 { .type = PF_STK_PROTO, .off = _OUT(proto), .cb = snl_attr_get_uint16 }, 1904 }; 1905 SNL_DECLARE_ATTR_PARSER(skey_parser, nla_p_skey); 1906 #undef _OUT 1907 1908 #define _IN(_field) offsetof(struct genlmsghdr, _field) 1909 #define _OUT(_field) offsetof(struct pfctl_state, _field) 1910 static struct snl_attr_parser ap_state[] = { 1911 { .type = PF_ST_ID, .off = _OUT(id), .cb = snl_attr_get_uint64 }, 1912 { .type = PF_ST_CREATORID, .off = _OUT(creatorid), .cb = snl_attr_get_uint32 }, 1913 { .type = PF_ST_IFNAME, .off = _OUT(ifname), .cb = snl_attr_store_ifname }, 1914 { .type = PF_ST_ORIG_IFNAME, .off = _OUT(orig_ifname), .cb = snl_attr_store_ifname }, 1915 { .type = PF_ST_KEY_WIRE, .off = _OUT(key[0]), .arg = &skey_parser, .cb = snl_attr_get_nested }, 1916 { .type = PF_ST_KEY_STACK, .off = _OUT(key[1]), .arg = &skey_parser, .cb = snl_attr_get_nested }, 1917 { .type = PF_ST_PEER_SRC, .off = _OUT(src), .arg = &speer_parser, .cb = snl_attr_get_nested }, 1918 { .type = PF_ST_PEER_DST, .off = _OUT(dst), .arg = &speer_parser, .cb = snl_attr_get_nested }, 1919 { .type = PF_ST_RT_ADDR, .off = _OUT(rt_addr), .cb = snl_attr_get_pfaddr }, 1920 { .type = PF_ST_RULE, .off = _OUT(rule), .cb = snl_attr_get_uint32 }, 1921 { .type = PF_ST_ANCHOR, .off = _OUT(anchor), .cb = snl_attr_get_uint32 }, 1922 { .type = PF_ST_NAT_RULE, .off = _OUT(nat_rule), .cb = snl_attr_get_uint32 }, 1923 { .type = PF_ST_CREATION, .off = _OUT(creation), .cb = snl_attr_get_uint32 }, 1924 { .type = PF_ST_EXPIRE, .off = _OUT(expire), .cb = snl_attr_get_uint32 }, 1925 { .type = PF_ST_PACKETS0, .off = _OUT(packets[0]), .cb = snl_attr_get_uint64 }, 1926 { .type = PF_ST_PACKETS1, .off = _OUT(packets[1]), .cb = snl_attr_get_uint64 }, 1927 { .type = PF_ST_BYTES0, .off = _OUT(bytes[0]), .cb = snl_attr_get_uint64 }, 1928 { .type = PF_ST_BYTES1, .off = _OUT(bytes[1]), .cb = snl_attr_get_uint64 }, 1929 { .type = PF_ST_DIRECTION, .off = _OUT(direction), .cb = snl_attr_get_uint8 }, 1930 { .type = PF_ST_LOG, .off = _OUT(log), .cb = snl_attr_get_uint8 }, 1931 { .type = PF_ST_STATE_FLAGS, .off = _OUT(state_flags), .cb = snl_attr_get_uint16 }, 1932 { .type = PF_ST_SYNC_FLAGS, .off = _OUT(sync_flags), .cb = snl_attr_get_uint8 }, 1933 { .type = PF_ST_RTABLEID, .off = _OUT(rtableid), .cb = snl_attr_get_int32 }, 1934 { .type = PF_ST_MIN_TTL, .off = _OUT(min_ttl), .cb = snl_attr_get_uint8 }, 1935 { .type = PF_ST_MAX_MSS, .off = _OUT(max_mss), .cb = snl_attr_get_uint16 }, 1936 { .type = PF_ST_DNPIPE, .off = _OUT(dnpipe), .cb = snl_attr_get_uint16 }, 1937 { .type = PF_ST_DNRPIPE, .off = _OUT(dnrpipe), .cb = snl_attr_get_uint16 }, 1938 { .type = PF_ST_RT, .off = _OUT(rt), .cb = snl_attr_get_uint8 }, 1939 { .type = PF_ST_RT_IFNAME, .off = _OUT(rt_ifname), .cb = snl_attr_store_ifname }, 1940 { .type = PF_ST_SRC_NODE_FLAGS, .off = _OUT(src_node_flags), .cb = snl_attr_get_uint8 }, 1941 }; 1942 #undef _IN 1943 #undef _OUT 1944 SNL_DECLARE_PARSER(state_parser, struct genlmsghdr, snl_f_p_empty, ap_state); 1945 1946 static const struct snl_hdr_parser *all_parsers[] = { 1947 &state_parser, &skey_parser, &speer_parser, 1948 &creator_parser, &getrules_parser 1949 }; 1950 1951 static int 1952 pfctl_get_states_nl(struct pfctl_state_filter *filter, struct snl_state *ss, pfctl_get_state_fn f, void *arg) 1953 { 1954 SNL_VERIFY_PARSERS(all_parsers); 1955 int family_id = snl_get_genl_family(ss, PFNL_FAMILY_NAME); 1956 int ret; 1957 1958 struct nlmsghdr *hdr; 1959 struct snl_writer nw; 1960 1961 if (family_id == 0) 1962 return (ENOTSUP); 1963 1964 snl_init_writer(ss, &nw); 1965 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GETSTATES); 1966 hdr->nlmsg_flags |= NLM_F_DUMP; 1967 snl_add_msg_attr_string(&nw, PF_ST_IFNAME, filter->ifname); 1968 snl_add_msg_attr_u16(&nw, PF_ST_PROTO, filter->proto); 1969 snl_add_msg_attr_u8(&nw, PF_ST_AF, filter->af); 1970 snl_add_msg_attr_ip6(&nw, PF_ST_FILTER_ADDR, &filter->addr.v6); 1971 snl_add_msg_attr_ip6(&nw, PF_ST_FILTER_MASK, &filter->mask.v6); 1972 1973 hdr = snl_finalize_msg(&nw); 1974 if (hdr == NULL) 1975 return (ENOMEM); 1976 1977 uint32_t seq_id = hdr->nlmsg_seq; 1978 1979 snl_send_message(ss, hdr); 1980 1981 struct snl_errmsg_data e = {}; 1982 while ((hdr = snl_read_reply_multi(ss, seq_id, &e)) != NULL) { 1983 struct pfctl_state s; 1984 bzero(&s, sizeof(s)); 1985 if (!snl_parse_nlmsg(ss, hdr, &state_parser, &s)) 1986 continue; 1987 1988 ret = f(&s, arg); 1989 if (ret != 0) 1990 return (ret); 1991 } 1992 1993 return (0); 1994 } 1995 1996 int 1997 pfctl_get_states_iter(pfctl_get_state_fn f, void *arg) 1998 { 1999 struct pfctl_state_filter filter = {}; 2000 return (pfctl_get_filtered_states_iter(&filter, f, arg)); 2001 } 2002 2003 int 2004 pfctl_get_filtered_states_iter(struct pfctl_state_filter *filter, pfctl_get_state_fn f, void *arg) 2005 { 2006 struct snl_state ss = {}; 2007 int error; 2008 2009 snl_init(&ss, NETLINK_GENERIC); 2010 error = pfctl_get_states_nl(filter, &ss, f, arg); 2011 snl_free(&ss); 2012 2013 return (error); 2014 } 2015 2016 static int 2017 pfctl_append_states(struct pfctl_state *s, void *arg) 2018 { 2019 struct pfctl_state *new; 2020 struct pfctl_states *states = (struct pfctl_states *)arg; 2021 2022 new = malloc(sizeof(*s)); 2023 if (new == NULL) 2024 return (ENOMEM); 2025 2026 memcpy(new, s, sizeof(*s)); 2027 2028 TAILQ_INSERT_TAIL(&states->states, new, entry); 2029 2030 return (0); 2031 } 2032 2033 int 2034 pfctl_get_states(int dev __unused, struct pfctl_states *states) 2035 { 2036 int ret; 2037 2038 bzero(states, sizeof(*states)); 2039 TAILQ_INIT(&states->states); 2040 2041 ret = pfctl_get_states_iter(pfctl_append_states, states); 2042 if (ret != 0) { 2043 pfctl_free_states(states); 2044 return (ret); 2045 } 2046 2047 return (0); 2048 } 2049 2050 void 2051 pfctl_free_states(struct pfctl_states *states) 2052 { 2053 struct pfctl_state *s, *tmp; 2054 2055 TAILQ_FOREACH_SAFE(s, &states->states, entry, tmp) { 2056 free(s); 2057 } 2058 2059 bzero(states, sizeof(*states)); 2060 } 2061 2062 struct pfctl_nl_clear_states { 2063 uint32_t killed; 2064 }; 2065 #define _OUT(_field) offsetof(struct pfctl_nl_clear_states, _field) 2066 static struct snl_attr_parser ap_clear_states[] = { 2067 { .type = PF_CS_KILLED, .off = _OUT(killed), .cb = snl_attr_get_uint32 }, 2068 }; 2069 #undef _OUT 2070 SNL_DECLARE_PARSER(clear_states_parser, struct genlmsghdr, snl_f_p_empty, ap_clear_states); 2071 2072 static int 2073 _pfctl_clear_states_h(struct pfctl_handle *h, const struct pfctl_kill *kill, 2074 unsigned int *killed, int cmd) 2075 { 2076 struct snl_writer nw; 2077 struct snl_errmsg_data e = {}; 2078 struct pfctl_nl_clear_states attrs = {}; 2079 struct nlmsghdr *hdr; 2080 uint32_t seq_id; 2081 int family_id; 2082 2083 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME); 2084 if (family_id == 0) 2085 return (ENOTSUP); 2086 2087 snl_init_writer(&h->ss, &nw); 2088 hdr = snl_create_genl_msg_request(&nw, family_id, cmd); 2089 hdr->nlmsg_flags |= NLM_F_DUMP; 2090 2091 snl_add_msg_attr_u64(&nw, PF_CS_CMP_ID, kill->cmp.id); 2092 snl_add_msg_attr_u32(&nw, PF_CS_CMP_CREATORID, htonl(kill->cmp.creatorid)); 2093 snl_add_msg_attr_u8(&nw, PF_CS_CMP_DIR, kill->cmp.direction); 2094 snl_add_msg_attr_u8(&nw, PF_CS_AF, kill->af); 2095 snl_add_msg_attr_u8(&nw, PF_CS_PROTO, kill->proto); 2096 snl_add_msg_attr_rule_addr(&nw, PF_CS_SRC, &kill->src); 2097 snl_add_msg_attr_rule_addr(&nw, PF_CS_DST, &kill->dst); 2098 snl_add_msg_attr_rule_addr(&nw, PF_CS_RT_ADDR, &kill->rt_addr); 2099 snl_add_msg_attr_string(&nw, PF_CS_IFNAME, kill->ifname); 2100 snl_add_msg_attr_string(&nw, PF_CS_LABEL, kill->label); 2101 snl_add_msg_attr_bool(&nw, PF_CS_KILL_MATCH, kill->kill_match); 2102 snl_add_msg_attr_bool(&nw, PF_CS_NAT, kill->nat); 2103 2104 if ((hdr = snl_finalize_msg(&nw)) == NULL) 2105 return (ENXIO); 2106 2107 seq_id = hdr->nlmsg_seq; 2108 2109 if (! snl_send_message(&h->ss, hdr)) 2110 return (ENXIO); 2111 2112 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) { 2113 if (! snl_parse_nlmsg(&h->ss, hdr, &clear_states_parser, &attrs)) 2114 continue; 2115 } 2116 2117 if (killed) 2118 *killed = attrs.killed; 2119 2120 return (e.error); 2121 } 2122 2123 int 2124 pfctl_clear_states_h(struct pfctl_handle *h, const struct pfctl_kill *kill, 2125 unsigned int *killed) 2126 { 2127 return(_pfctl_clear_states_h(h, kill, killed, PFNL_CMD_CLRSTATES)); 2128 } 2129 2130 int 2131 pfctl_kill_states_h(struct pfctl_handle *h, const struct pfctl_kill *kill, 2132 unsigned int *killed) 2133 { 2134 return(_pfctl_clear_states_h(h, kill, killed, PFNL_CMD_KILLSTATES)); 2135 } 2136 2137 static int 2138 _pfctl_clear_states(int dev __unused, const struct pfctl_kill *kill, 2139 unsigned int *killed, uint64_t cmd) 2140 { 2141 struct pfctl_handle *h; 2142 int ret; 2143 2144 h = pfctl_open(PF_DEVICE); 2145 if (h == NULL) 2146 return (ENODEV); 2147 2148 ret = _pfctl_clear_states_h(h, kill, killed, cmd); 2149 pfctl_close(h); 2150 2151 return (ret); 2152 } 2153 2154 int 2155 pfctl_clear_states(int dev __unused, const struct pfctl_kill *kill, 2156 unsigned int *killed) 2157 { 2158 return (_pfctl_clear_states(dev, kill, killed, PFNL_CMD_CLRSTATES)); 2159 } 2160 2161 int 2162 pfctl_kill_states(int dev __unused, const struct pfctl_kill *kill, unsigned int *killed) 2163 { 2164 return (_pfctl_clear_states(dev, kill, killed, PFNL_CMD_KILLSTATES)); 2165 } 2166 2167 int 2168 pfctl_clear_rules(int dev, const char *anchorname) 2169 { 2170 struct pfioc_trans trans; 2171 struct pfioc_trans_e transe[2]; 2172 int ret; 2173 2174 bzero(&trans, sizeof(trans)); 2175 bzero(&transe, sizeof(transe)); 2176 2177 transe[0].rs_num = PF_RULESET_SCRUB; 2178 if (strlcpy(transe[0].anchor, anchorname, sizeof(transe[0].anchor)) 2179 >= sizeof(transe[0].anchor)) 2180 return (E2BIG); 2181 2182 transe[1].rs_num = PF_RULESET_FILTER; 2183 if (strlcpy(transe[1].anchor, anchorname, sizeof(transe[1].anchor)) 2184 >= sizeof(transe[1].anchor)) 2185 return (E2BIG); 2186 2187 trans.size = 2; 2188 trans.esize = sizeof(transe[0]); 2189 trans.array = transe; 2190 2191 ret = ioctl(dev, DIOCXBEGIN, &trans); 2192 if (ret != 0) 2193 return (errno); 2194 ret = ioctl(dev, DIOCXCOMMIT, &trans); 2195 if (ret != 0) 2196 return (errno); 2197 2198 return (0); 2199 } 2200 2201 int 2202 pfctl_clear_nat(int dev, const char *anchorname) 2203 { 2204 struct pfioc_trans trans; 2205 struct pfioc_trans_e transe[3]; 2206 int ret; 2207 2208 bzero(&trans, sizeof(trans)); 2209 bzero(&transe, sizeof(transe)); 2210 2211 transe[0].rs_num = PF_RULESET_NAT; 2212 if (strlcpy(transe[0].anchor, anchorname, sizeof(transe[0].anchor)) 2213 >= sizeof(transe[0].anchor)) 2214 return (E2BIG); 2215 2216 transe[1].rs_num = PF_RULESET_BINAT; 2217 if (strlcpy(transe[1].anchor, anchorname, sizeof(transe[1].anchor)) 2218 >= sizeof(transe[0].anchor)) 2219 return (E2BIG); 2220 2221 transe[2].rs_num = PF_RULESET_RDR; 2222 if (strlcpy(transe[2].anchor, anchorname, sizeof(transe[2].anchor)) 2223 >= sizeof(transe[2].anchor)) 2224 return (E2BIG); 2225 2226 trans.size = 3; 2227 trans.esize = sizeof(transe[0]); 2228 trans.array = transe; 2229 2230 ret = ioctl(dev, DIOCXBEGIN, &trans); 2231 if (ret != 0) 2232 return (errno); 2233 ret = ioctl(dev, DIOCXCOMMIT, &trans); 2234 if (ret != 0) 2235 return (errno); 2236 2237 return (0); 2238 } 2239 2240 int 2241 pfctl_clear_eth_rules(int dev, const char *anchorname) 2242 { 2243 struct pfioc_trans trans; 2244 struct pfioc_trans_e transe; 2245 int ret; 2246 2247 bzero(&trans, sizeof(trans)); 2248 bzero(&transe, sizeof(transe)); 2249 2250 transe.rs_num = PF_RULESET_ETH; 2251 if (strlcpy(transe.anchor, anchorname, sizeof(transe.anchor)) 2252 >= sizeof(transe.anchor)) 2253 return (E2BIG); 2254 2255 trans.size = 1; 2256 trans.esize = sizeof(transe); 2257 trans.array = &transe; 2258 2259 ret = ioctl(dev, DIOCXBEGIN, &trans); 2260 if (ret != 0) 2261 return (errno); 2262 ret = ioctl(dev, DIOCXCOMMIT, &trans); 2263 if (ret != 0) 2264 return (errno); 2265 2266 return (0); 2267 } 2268 2269 static int 2270 _pfctl_get_limit(int dev, const int index, uint *limit) 2271 { 2272 struct pfioc_limit pl; 2273 2274 bzero(&pl, sizeof(pl)); 2275 pl.index = index; 2276 2277 if (ioctl(dev, DIOCGETLIMIT, &pl) == -1) 2278 return (errno); 2279 2280 *limit = pl.limit; 2281 2282 return (0); 2283 } 2284 2285 int 2286 pfctl_set_syncookies(int dev, const struct pfctl_syncookies *s) 2287 { 2288 struct pfioc_nv nv; 2289 nvlist_t *nvl; 2290 int ret; 2291 uint state_limit; 2292 uint64_t lim, hi, lo; 2293 2294 ret = _pfctl_get_limit(dev, PF_LIMIT_STATES, &state_limit); 2295 if (ret != 0) 2296 return (ret); 2297 2298 if (state_limit == 0) 2299 state_limit = INT_MAX; 2300 2301 lim = state_limit; 2302 hi = lim * s->highwater / 100; 2303 lo = lim * s->lowwater / 100; 2304 2305 if (lo == hi) 2306 hi++; 2307 2308 nvl = nvlist_create(0); 2309 2310 nvlist_add_bool(nvl, "enabled", s->mode != PFCTL_SYNCOOKIES_NEVER); 2311 nvlist_add_bool(nvl, "adaptive", s->mode == PFCTL_SYNCOOKIES_ADAPTIVE); 2312 nvlist_add_number(nvl, "highwater", hi); 2313 nvlist_add_number(nvl, "lowwater", lo); 2314 2315 nv.data = nvlist_pack(nvl, &nv.len); 2316 nv.size = nv.len; 2317 nvlist_destroy(nvl); 2318 nvl = NULL; 2319 2320 ret = ioctl(dev, DIOCSETSYNCOOKIES, &nv); 2321 2322 free(nv.data); 2323 if (ret != 0) 2324 return (errno); 2325 2326 return (0); 2327 } 2328 2329 int 2330 pfctl_get_syncookies(int dev, struct pfctl_syncookies *s) 2331 { 2332 nvlist_t *nvl; 2333 int ret; 2334 uint state_limit; 2335 bool enabled, adaptive; 2336 2337 ret = _pfctl_get_limit(dev, PF_LIMIT_STATES, &state_limit); 2338 if (ret != 0) 2339 return (ret); 2340 2341 if (state_limit == 0) 2342 state_limit = INT_MAX; 2343 2344 bzero(s, sizeof(*s)); 2345 2346 nvl = nvlist_create(0); 2347 2348 if ((ret = pfctl_do_ioctl(dev, DIOCGETSYNCOOKIES, 256, &nvl)) != 0) { 2349 ret = errno; 2350 goto out; 2351 } 2352 2353 enabled = nvlist_get_bool(nvl, "enabled"); 2354 adaptive = nvlist_get_bool(nvl, "adaptive"); 2355 2356 if (enabled) { 2357 if (adaptive) 2358 s->mode = PFCTL_SYNCOOKIES_ADAPTIVE; 2359 else 2360 s->mode = PFCTL_SYNCOOKIES_ALWAYS; 2361 } else { 2362 s->mode = PFCTL_SYNCOOKIES_NEVER; 2363 } 2364 2365 s->highwater = nvlist_get_number(nvl, "highwater") * 100 / state_limit; 2366 s->lowwater = nvlist_get_number(nvl, "lowwater") * 100 / state_limit; 2367 s->halfopen_states = nvlist_get_number(nvl, "halfopen_states"); 2368 2369 out: 2370 nvlist_destroy(nvl); 2371 return (ret); 2372 } 2373 2374 int 2375 pfctl_table_add_addrs(int dev, struct pfr_table *tbl, struct pfr_addr 2376 *addr, int size, int *nadd, int flags) 2377 { 2378 struct pfioc_table io; 2379 2380 if (tbl == NULL || size < 0 || (size && addr == NULL)) { 2381 return (EINVAL); 2382 } 2383 bzero(&io, sizeof io); 2384 io.pfrio_flags = flags; 2385 io.pfrio_table = *tbl; 2386 io.pfrio_buffer = addr; 2387 io.pfrio_esize = sizeof(*addr); 2388 io.pfrio_size = size; 2389 2390 if (ioctl(dev, DIOCRADDADDRS, &io)) 2391 return (errno); 2392 if (nadd != NULL) 2393 *nadd = io.pfrio_nadd; 2394 return (0); 2395 } 2396 2397 int 2398 pfctl_table_del_addrs(int dev, struct pfr_table *tbl, struct pfr_addr 2399 *addr, int size, int *ndel, int flags) 2400 { 2401 struct pfioc_table io; 2402 2403 if (tbl == NULL || size < 0 || (size && addr == NULL)) { 2404 return (EINVAL); 2405 } 2406 bzero(&io, sizeof io); 2407 io.pfrio_flags = flags; 2408 io.pfrio_table = *tbl; 2409 io.pfrio_buffer = addr; 2410 io.pfrio_esize = sizeof(*addr); 2411 io.pfrio_size = size; 2412 2413 if (ioctl(dev, DIOCRDELADDRS, &io)) 2414 return (errno); 2415 if (ndel != NULL) 2416 *ndel = io.pfrio_ndel; 2417 return (0); 2418 } 2419 2420 int 2421 pfctl_table_set_addrs(int dev, struct pfr_table *tbl, struct pfr_addr 2422 *addr, int size, int *size2, int *nadd, int *ndel, int *nchange, int flags) 2423 { 2424 struct pfioc_table io; 2425 2426 if (tbl == NULL || size < 0 || (size && addr == NULL)) { 2427 return (EINVAL); 2428 } 2429 bzero(&io, sizeof io); 2430 io.pfrio_flags = flags; 2431 io.pfrio_table = *tbl; 2432 io.pfrio_buffer = addr; 2433 io.pfrio_esize = sizeof(*addr); 2434 io.pfrio_size = size; 2435 io.pfrio_size2 = (size2 != NULL) ? *size2 : 0; 2436 if (ioctl(dev, DIOCRSETADDRS, &io)) 2437 return (errno); 2438 if (nadd != NULL) 2439 *nadd = io.pfrio_nadd; 2440 if (ndel != NULL) 2441 *ndel = io.pfrio_ndel; 2442 if (nchange != NULL) 2443 *nchange = io.pfrio_nchange; 2444 if (size2 != NULL) 2445 *size2 = io.pfrio_size2; 2446 return (0); 2447 } 2448 2449 int pfctl_table_get_addrs(int dev, struct pfr_table *tbl, struct pfr_addr *addr, 2450 int *size, int flags) 2451 { 2452 struct pfioc_table io; 2453 2454 if (tbl == NULL || size == NULL || *size < 0 || 2455 (*size && addr == NULL)) { 2456 return (EINVAL); 2457 } 2458 bzero(&io, sizeof io); 2459 io.pfrio_flags = flags; 2460 io.pfrio_table = *tbl; 2461 io.pfrio_buffer = addr; 2462 io.pfrio_esize = sizeof(*addr); 2463 io.pfrio_size = *size; 2464 if (ioctl(dev, DIOCRGETADDRS, &io)) 2465 return (errno); 2466 *size = io.pfrio_size; 2467 return (0); 2468 } 2469 2470 int 2471 pfctl_set_statusif(struct pfctl_handle *h, const char *ifname) 2472 { 2473 struct snl_writer nw; 2474 struct snl_errmsg_data e = {}; 2475 struct nlmsghdr *hdr; 2476 uint32_t seq_id; 2477 int family_id; 2478 2479 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME); 2480 if (family_id == 0) 2481 return (ENOTSUP); 2482 2483 snl_init_writer(&h->ss, &nw); 2484 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_SET_STATUSIF); 2485 2486 snl_add_msg_attr_string(&nw, PF_SS_IFNAME, ifname); 2487 2488 if ((hdr = snl_finalize_msg(&nw)) == NULL) 2489 return (ENXIO); 2490 2491 seq_id = hdr->nlmsg_seq; 2492 2493 if (! snl_send_message(&h->ss, hdr)) 2494 return (ENXIO); 2495 2496 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) { 2497 } 2498 2499 return (e.error); 2500 } 2501 2502 #define _IN(_field) offsetof(struct genlmsghdr, _field) 2503 #define _OUT(_field) offsetof(struct pfctl_natlook, _field) 2504 static struct snl_attr_parser ap_natlook[] = { 2505 { .type = PF_NL_SRC_ADDR, .off = _OUT(saddr), .cb = snl_attr_get_in6_addr }, 2506 { .type = PF_NL_DST_ADDR, .off = _OUT(daddr), .cb = snl_attr_get_in6_addr }, 2507 { .type = PF_NL_SRC_PORT, .off = _OUT(sport), .cb = snl_attr_get_uint16 }, 2508 { .type = PF_NL_DST_PORT, .off = _OUT(dport), .cb = snl_attr_get_uint16 }, 2509 }; 2510 #undef _IN 2511 #undef _OUT 2512 SNL_DECLARE_PARSER(natlook_parser, struct genlmsghdr, snl_f_p_empty, ap_natlook); 2513 2514 int 2515 pfctl_natlook(struct pfctl_handle *h, const struct pfctl_natlook_key *k, 2516 struct pfctl_natlook *r) 2517 { 2518 struct snl_writer nw; 2519 struct snl_errmsg_data e = {}; 2520 struct nlmsghdr *hdr; 2521 uint32_t seq_id; 2522 int family_id; 2523 2524 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME); 2525 if (family_id == 0) 2526 return (ENOTSUP); 2527 2528 snl_init_writer(&h->ss, &nw); 2529 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_NATLOOK); 2530 hdr->nlmsg_flags |= NLM_F_DUMP; 2531 2532 snl_add_msg_attr_u8(&nw, PF_NL_AF, k->af); 2533 snl_add_msg_attr_u8(&nw, PF_NL_DIRECTION, k->direction); 2534 snl_add_msg_attr_u8(&nw, PF_NL_PROTO, k->proto); 2535 snl_add_msg_attr_ip6(&nw, PF_NL_SRC_ADDR, &k->saddr.v6); 2536 snl_add_msg_attr_ip6(&nw, PF_NL_DST_ADDR, &k->daddr.v6); 2537 snl_add_msg_attr_u16(&nw, PF_NL_SRC_PORT, k->sport); 2538 snl_add_msg_attr_u16(&nw, PF_NL_DST_PORT, k->dport); 2539 2540 if ((hdr = snl_finalize_msg(&nw)) == NULL) 2541 return (ENXIO); 2542 2543 seq_id = hdr->nlmsg_seq; 2544 2545 if (! snl_send_message(&h->ss, hdr)) 2546 return (ENXIO); 2547 2548 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) { 2549 if (! snl_parse_nlmsg(&h->ss, hdr, &natlook_parser, r)) 2550 continue; 2551 } 2552 2553 return (e.error); 2554 } 2555 2556 int 2557 pfctl_set_debug(struct pfctl_handle *h, uint32_t level) 2558 { 2559 struct snl_writer nw; 2560 struct snl_errmsg_data e = {}; 2561 struct nlmsghdr *hdr; 2562 uint32_t seq_id; 2563 int family_id; 2564 2565 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME); 2566 if (family_id == 0) 2567 return (ENOTSUP); 2568 2569 snl_init_writer(&h->ss, &nw); 2570 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_SET_DEBUG); 2571 2572 snl_add_msg_attr_u32(&nw, PF_SD_LEVEL, level); 2573 2574 if ((hdr = snl_finalize_msg(&nw)) == NULL) 2575 return (ENXIO); 2576 2577 seq_id = hdr->nlmsg_seq; 2578 2579 if (! snl_send_message(&h->ss, hdr)) 2580 return (ENXIO); 2581 2582 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) { 2583 } 2584 2585 return (e.error); 2586 } 2587 2588 int 2589 pfctl_set_timeout(struct pfctl_handle *h, uint32_t timeout, uint32_t seconds) 2590 { 2591 struct snl_writer nw; 2592 struct snl_errmsg_data e = {}; 2593 struct nlmsghdr *hdr; 2594 uint32_t seq_id; 2595 int family_id; 2596 2597 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME); 2598 if (family_id == 0) 2599 return (ENOTSUP); 2600 2601 snl_init_writer(&h->ss, &nw); 2602 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_SET_TIMEOUT); 2603 2604 snl_add_msg_attr_u32(&nw, PF_TO_TIMEOUT, timeout); 2605 snl_add_msg_attr_u32(&nw, PF_TO_SECONDS, seconds); 2606 2607 if ((hdr = snl_finalize_msg(&nw)) == NULL) 2608 return (ENXIO); 2609 2610 seq_id = hdr->nlmsg_seq; 2611 2612 if (! snl_send_message(&h->ss, hdr)) 2613 return (ENXIO); 2614 2615 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) { 2616 } 2617 2618 return (e.error); 2619 } 2620 2621 struct pfctl_nl_timeout { 2622 uint32_t seconds; 2623 }; 2624 #define _OUT(_field) offsetof(struct pfctl_nl_timeout, _field) 2625 static struct snl_attr_parser ap_get_timeout[] = { 2626 { .type = PF_TO_SECONDS, .off = _OUT(seconds), .cb = snl_attr_get_uint32 }, 2627 }; 2628 #undef _OUT 2629 SNL_DECLARE_PARSER(get_timeout_parser, struct genlmsghdr, snl_f_p_empty, ap_get_timeout); 2630 2631 int 2632 pfctl_get_timeout(struct pfctl_handle *h, uint32_t timeout, uint32_t *seconds) 2633 { 2634 struct snl_writer nw; 2635 struct pfctl_nl_timeout to = {}; 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_GET_TIMEOUT); 2647 hdr->nlmsg_flags |= NLM_F_DUMP; 2648 2649 snl_add_msg_attr_u32(&nw, PF_TO_TIMEOUT, timeout); 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 if (! snl_parse_nlmsg(&h->ss, hdr, &get_timeout_parser, &to)) 2661 continue; 2662 } 2663 2664 if (seconds != NULL) 2665 *seconds = to.seconds; 2666 2667 return (e.error); 2668 } 2669 2670 int 2671 pfctl_set_limit(struct pfctl_handle *h, const int index, const uint limit) 2672 { 2673 struct snl_writer nw; 2674 struct snl_errmsg_data e = {}; 2675 struct nlmsghdr *hdr; 2676 uint32_t seq_id; 2677 int family_id; 2678 2679 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME); 2680 if (family_id == 0) 2681 return (ENOTSUP); 2682 2683 snl_init_writer(&h->ss, &nw); 2684 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_SET_LIMIT); 2685 2686 snl_add_msg_attr_u32(&nw, PF_LI_INDEX, index); 2687 snl_add_msg_attr_u32(&nw, PF_LI_LIMIT, limit); 2688 2689 if ((hdr = snl_finalize_msg(&nw)) == NULL) 2690 return (ENXIO); 2691 2692 seq_id = hdr->nlmsg_seq; 2693 2694 if (! snl_send_message(&h->ss, hdr)) 2695 return (ENXIO); 2696 2697 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) { 2698 } 2699 2700 return (e.error); 2701 } 2702 2703 struct pfctl_nl_limit { 2704 unsigned int limit; 2705 }; 2706 #define _OUT(_field) offsetof(struct pfctl_nl_limit, _field) 2707 static struct snl_attr_parser ap_get_limit[] = { 2708 { .type = PF_LI_LIMIT, .off = _OUT(limit), .cb = snl_attr_get_uint32 }, 2709 }; 2710 #undef _OUT 2711 SNL_DECLARE_PARSER(get_limit_parser, struct genlmsghdr, snl_f_p_empty, ap_get_limit); 2712 2713 int 2714 pfctl_get_limit(struct pfctl_handle *h, const int index, uint *limit) 2715 { 2716 struct snl_writer nw; 2717 struct pfctl_nl_limit li = {}; 2718 struct snl_errmsg_data e = {}; 2719 struct nlmsghdr *hdr; 2720 uint32_t seq_id; 2721 int family_id; 2722 2723 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME); 2724 if (family_id == 0) 2725 return (ENOTSUP); 2726 2727 snl_init_writer(&h->ss, &nw); 2728 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GET_LIMIT); 2729 hdr->nlmsg_flags |= NLM_F_DUMP; 2730 2731 snl_add_msg_attr_u32(&nw, PF_LI_INDEX, index); 2732 2733 if ((hdr = snl_finalize_msg(&nw)) == NULL) 2734 return (ENXIO); 2735 2736 seq_id = hdr->nlmsg_seq; 2737 2738 if (! snl_send_message(&h->ss, hdr)) 2739 return (ENXIO); 2740 2741 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) { 2742 if (! snl_parse_nlmsg(&h->ss, hdr, &get_limit_parser, &li)) 2743 continue; 2744 } 2745 2746 if (limit != NULL) 2747 *limit = li.limit; 2748 2749 return (e.error); 2750 } 2751 2752 struct pfctl_nl_begin_addrs { 2753 uint32_t ticket; 2754 }; 2755 #define _OUT(_field) offsetof(struct pfctl_nl_begin_addrs, _field) 2756 static struct snl_attr_parser ap_begin_addrs[] = { 2757 { .type = PF_BA_TICKET, .off = _OUT(ticket), .cb = snl_attr_get_uint32 }, 2758 }; 2759 #undef _OUT 2760 SNL_DECLARE_PARSER(begin_addrs_parser, struct genlmsghdr, snl_f_p_empty, ap_begin_addrs); 2761 2762 int 2763 pfctl_begin_addrs(struct pfctl_handle *h, uint32_t *ticket) 2764 { 2765 struct snl_writer nw; 2766 struct pfctl_nl_begin_addrs attrs = {}; 2767 struct snl_errmsg_data e = {}; 2768 struct nlmsghdr *hdr; 2769 uint32_t seq_id; 2770 int family_id; 2771 2772 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME); 2773 if (family_id == 0) 2774 return (ENOTSUP); 2775 2776 snl_init_writer(&h->ss, &nw); 2777 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_BEGIN_ADDRS); 2778 hdr->nlmsg_flags |= NLM_F_DUMP; 2779 2780 if ((hdr = snl_finalize_msg(&nw)) == NULL) 2781 return (ENXIO); 2782 2783 seq_id = hdr->nlmsg_seq; 2784 2785 if (! snl_send_message(&h->ss, hdr)) 2786 return (ENXIO); 2787 2788 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) { 2789 if (! snl_parse_nlmsg(&h->ss, hdr, &begin_addrs_parser, &attrs)) 2790 continue; 2791 } 2792 2793 if (ticket != NULL) 2794 *ticket = attrs.ticket; 2795 2796 return (e.error); 2797 } 2798 2799 int 2800 pfctl_add_addr(struct pfctl_handle *h, const struct pfioc_pooladdr *pa, int which) 2801 { 2802 struct snl_writer nw; 2803 struct snl_errmsg_data e = {}; 2804 struct nlmsghdr *hdr; 2805 uint32_t seq_id; 2806 int family_id; 2807 2808 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME); 2809 if (family_id == 0) 2810 return (ENOTSUP); 2811 2812 snl_init_writer(&h->ss, &nw); 2813 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_ADD_ADDR); 2814 2815 snl_add_msg_attr_u32(&nw, PF_AA_ACTION, pa->action); 2816 snl_add_msg_attr_u32(&nw, PF_AA_TICKET, pa->ticket); 2817 snl_add_msg_attr_u32(&nw, PF_AA_NR, pa->nr); 2818 snl_add_msg_attr_u32(&nw, PF_AA_R_NUM, pa->r_num); 2819 snl_add_msg_attr_u8(&nw, PF_AA_R_ACTION, pa->r_action); 2820 snl_add_msg_attr_u8(&nw, PF_AA_R_LAST, pa->r_last); 2821 snl_add_msg_attr_u8(&nw, PF_AA_AF, pa->af); 2822 snl_add_msg_attr_string(&nw, PF_AA_ANCHOR, pa->anchor); 2823 snl_add_msg_attr_pool_addr(&nw, PF_AA_ADDR, &pa->addr); 2824 snl_add_msg_attr_u32(&nw, PF_AA_WHICH, which); 2825 2826 if ((hdr = snl_finalize_msg(&nw)) == NULL) 2827 return (ENXIO); 2828 2829 seq_id = hdr->nlmsg_seq; 2830 2831 if (! snl_send_message(&h->ss, hdr)) 2832 return (ENXIO); 2833 2834 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) { 2835 } 2836 2837 return (e.error); 2838 } 2839 2840 static const struct snl_attr_parser ap_get_addrs[] = { 2841 { .type = PF_AA_NR, .off = 0, .cb = snl_attr_get_uint32 }, 2842 }; 2843 SNL_DECLARE_PARSER(get_addrs_parser, struct genlmsghdr, snl_f_p_empty, ap_get_addrs); 2844 2845 int 2846 pfctl_get_addrs(struct pfctl_handle *h, uint32_t ticket, uint32_t r_num, 2847 uint8_t r_action, const char *anchor, uint32_t *nr, int which) 2848 { 2849 struct snl_writer nw; 2850 struct snl_errmsg_data e = {}; 2851 struct nlmsghdr *hdr; 2852 uint32_t seq_id; 2853 int family_id; 2854 2855 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME); 2856 if (family_id == 0) 2857 return (ENOTSUP); 2858 2859 snl_init_writer(&h->ss, &nw); 2860 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GET_ADDRS); 2861 2862 snl_add_msg_attr_u32(&nw, PF_AA_TICKET, ticket); 2863 snl_add_msg_attr_u32(&nw, PF_AA_R_NUM, r_num); 2864 snl_add_msg_attr_u8(&nw, PF_AA_R_ACTION, r_action); 2865 snl_add_msg_attr_string(&nw, PF_AA_ANCHOR, anchor); 2866 snl_add_msg_attr_u32(&nw, PF_AA_WHICH, which); 2867 2868 if ((hdr = snl_finalize_msg(&nw)) == NULL) 2869 return (ENXIO); 2870 2871 seq_id = hdr->nlmsg_seq; 2872 2873 if (! snl_send_message(&h->ss, hdr)) 2874 return (ENXIO); 2875 2876 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) { 2877 if (! snl_parse_nlmsg(&h->ss, hdr, &get_addrs_parser, nr)) 2878 continue; 2879 } 2880 2881 return (e.error); 2882 } 2883 2884 #define _OUT(_field) offsetof(struct pf_pooladdr, _field) 2885 static const struct snl_attr_parser ap_pool_addr[] = { 2886 { .type = PF_PA_ADDR, .off = _OUT(addr), .arg = &addr_wrap_parser, .cb = snl_attr_get_nested }, 2887 { .type = PF_PA_IFNAME, .off = _OUT(ifname), .arg_u32 = IFNAMSIZ, .cb = snl_attr_copy_string }, 2888 }; 2889 SNL_DECLARE_ATTR_PARSER(pool_addr_parser, ap_pool_addr); 2890 #undef _OUT 2891 2892 #define _OUT(_field) offsetof(struct pfioc_pooladdr, _field) 2893 static const struct snl_attr_parser ap_get_addr[] = { 2894 { .type = PF_AA_ACTION, .off = _OUT(action), .cb = snl_attr_get_uint32 }, 2895 { .type = PF_AA_TICKET, .off = _OUT(ticket), .cb = snl_attr_get_uint32 }, 2896 { .type = PF_AA_NR, .off = _OUT(nr), .cb = snl_attr_get_uint32 }, 2897 { .type = PF_AA_R_NUM, .off = _OUT(r_num), .cb = snl_attr_get_uint32 }, 2898 { .type = PF_AA_R_ACTION, .off = _OUT(r_action), .cb = snl_attr_get_uint8 }, 2899 { .type = PF_AA_R_LAST, .off = _OUT(r_last), .cb = snl_attr_get_uint8 }, 2900 { .type = PF_AA_AF, .off = _OUT(af), .cb = snl_attr_get_uint8 }, 2901 { .type = PF_AA_ANCHOR, .off = _OUT(anchor), .arg_u32 = MAXPATHLEN, .cb = snl_attr_copy_string }, 2902 { .type = PF_AA_ADDR, .off = _OUT(addr), .arg = &pool_addr_parser, .cb = snl_attr_get_nested }, 2903 }; 2904 SNL_DECLARE_PARSER(get_addr_parser, struct genlmsghdr, snl_f_p_empty, ap_get_addr); 2905 #undef _OUT 2906 2907 int 2908 pfctl_get_addr(struct pfctl_handle *h, uint32_t ticket, uint32_t r_num, 2909 uint8_t r_action, const char *anchor, uint32_t nr, struct pfioc_pooladdr *pa, 2910 int which) 2911 { 2912 struct snl_writer nw; 2913 struct snl_errmsg_data e = {}; 2914 struct nlmsghdr *hdr; 2915 uint32_t seq_id; 2916 int family_id; 2917 2918 family_id =snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME); 2919 if (family_id == 0) 2920 return (ENOTSUP); 2921 2922 snl_init_writer(&h->ss, &nw); 2923 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GET_ADDR); 2924 2925 snl_add_msg_attr_u32(&nw, PF_AA_TICKET, ticket); 2926 snl_add_msg_attr_u32(&nw, PF_AA_R_NUM, r_num); 2927 snl_add_msg_attr_u8(&nw, PF_AA_R_ACTION, r_action); 2928 snl_add_msg_attr_string(&nw, PF_AA_ANCHOR, anchor); 2929 snl_add_msg_attr_u32(&nw, PF_AA_NR, nr); 2930 snl_add_msg_attr_u32(&nw, PF_AA_WHICH, which); 2931 2932 if ((hdr = snl_finalize_msg(&nw)) == NULL) 2933 return (ENXIO); 2934 2935 seq_id = hdr->nlmsg_seq; 2936 2937 if (! snl_send_message(&h->ss, hdr)) 2938 return (ENXIO); 2939 2940 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) { 2941 if (! snl_parse_nlmsg(&h->ss, hdr, &get_addr_parser, pa)) 2942 continue; 2943 } 2944 2945 return (e.error); 2946 } 2947 2948 #define _OUT(_field) offsetof(struct pfioc_ruleset, _field) 2949 static const struct snl_attr_parser ap_ruleset[] = { 2950 { .type = PF_RS_NR, .off = _OUT(nr), .cb = snl_attr_get_uint32 }, 2951 { .type = PF_RS_NAME, .off = _OUT(name), .arg = (void *)PF_ANCHOR_NAME_SIZE, .cb = snl_attr_copy_string }, 2952 }; 2953 SNL_DECLARE_PARSER(ruleset_parser, struct genlmsghdr, snl_f_p_empty, ap_ruleset); 2954 #undef _OUT 2955 2956 int 2957 pfctl_get_rulesets(struct pfctl_handle *h, const char *path, uint32_t *nr) 2958 { 2959 struct snl_writer nw; 2960 struct snl_errmsg_data e = {}; 2961 struct nlmsghdr *hdr; 2962 struct pfioc_ruleset rs = {}; 2963 uint32_t seq_id; 2964 int family_id; 2965 2966 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME); 2967 if (family_id == 0) 2968 return (ENOTSUP); 2969 2970 snl_init_writer(&h->ss, &nw); 2971 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GET_RULESETS); 2972 2973 snl_add_msg_attr_string(&nw, PF_RS_PATH, path); 2974 2975 if ((hdr = snl_finalize_msg(&nw)) == NULL) 2976 return (ENXIO); 2977 2978 seq_id = hdr->nlmsg_seq; 2979 2980 if (! snl_send_message(&h->ss, hdr)) 2981 return (ENXIO); 2982 2983 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) { 2984 if (! snl_parse_nlmsg(&h->ss, hdr, &ruleset_parser, &rs)) 2985 continue; 2986 } 2987 2988 *nr = rs.nr; 2989 2990 return (e.error); 2991 } 2992 2993 int 2994 pfctl_get_ruleset(struct pfctl_handle *h, const char *path, uint32_t nr, struct pfioc_ruleset *rs) 2995 { 2996 struct snl_writer nw; 2997 struct snl_errmsg_data e = {}; 2998 struct nlmsghdr *hdr; 2999 uint32_t seq_id; 3000 int family_id; 3001 3002 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME); 3003 if (family_id == 0) 3004 return (ENOTSUP); 3005 3006 snl_init_writer(&h->ss, &nw); 3007 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GET_RULESET); 3008 3009 snl_add_msg_attr_string(&nw, PF_RS_PATH, path); 3010 snl_add_msg_attr_u32(&nw, PF_RS_NR, nr); 3011 3012 if ((hdr = snl_finalize_msg(&nw)) == NULL) 3013 return (ENXIO); 3014 3015 seq_id = hdr->nlmsg_seq; 3016 3017 if (! snl_send_message(&h->ss, hdr)) 3018 return (ENXIO); 3019 3020 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) { 3021 if (! snl_parse_nlmsg(&h->ss, hdr, &ruleset_parser, rs)) 3022 continue; 3023 } 3024 3025 return (e.error); 3026 } 3027 3028 #define _OUT(_field) offsetof(struct pfctl_src_node, _field) 3029 static struct snl_attr_parser ap_srcnode[] = { 3030 { .type = PF_SN_ADDR, .off = _OUT(addr), .cb = snl_attr_get_in6_addr }, 3031 { .type = PF_SN_RADDR, .off = _OUT(raddr), .cb = snl_attr_get_in6_addr }, 3032 { .type = PF_SN_RULE_NR, .off = _OUT(rule), .cb = snl_attr_get_uint32 }, 3033 { .type = PF_SN_BYTES_IN, .off = _OUT(bytes[0]), .cb = snl_attr_get_uint64 }, 3034 { .type = PF_SN_BYTES_OUT, .off = _OUT(bytes[1]), .cb = snl_attr_get_uint64 }, 3035 { .type = PF_SN_PACKETS_IN, .off = _OUT(packets[0]), .cb = snl_attr_get_uint64 }, 3036 { .type = PF_SN_PACKETS_OUT, .off = _OUT(packets[1]), .cb = snl_attr_get_uint64 }, 3037 { .type = PF_SN_STATES, .off = _OUT(states), .cb = snl_attr_get_uint32 }, 3038 { .type = PF_SN_CONNECTIONS, .off = _OUT(conn), .cb = snl_attr_get_uint32 }, 3039 { .type = PF_SN_AF, .off = _OUT(af), .cb = snl_attr_get_uint8 }, 3040 { .type = PF_SN_RULE_TYPE, .off = _OUT(ruletype), .cb = snl_attr_get_uint8 }, 3041 { .type = PF_SN_CREATION, .off = _OUT(creation), .cb = snl_attr_get_uint64 }, 3042 { .type = PF_SN_EXPIRE, .off = _OUT(expire), .cb = snl_attr_get_uint64 }, 3043 { .type = PF_SN_CONNECTION_RATE, .off = _OUT(conn_rate), .arg = &pfctl_threshold_parser, .cb = snl_attr_get_nested }, 3044 { .type = PF_SN_NAF, .off = _OUT(naf), .cb = snl_attr_get_uint8 }, 3045 { .type = PF_SN_NODE_TYPE, .off = _OUT(type), .cb = snl_attr_get_uint8 }, 3046 }; 3047 #undef _OUT 3048 SNL_DECLARE_PARSER(srcnode_parser, struct genlmsghdr, snl_f_p_empty, ap_srcnode); 3049 3050 int 3051 pfctl_get_srcnodes(struct pfctl_handle *h, pfctl_get_srcnode_fn fn, void *arg) 3052 { 3053 struct snl_writer nw; 3054 struct pfctl_src_node sn; 3055 struct snl_errmsg_data e = {}; 3056 struct nlmsghdr *hdr; 3057 uint32_t seq_id; 3058 int family_id; 3059 int ret; 3060 3061 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME); 3062 if (family_id == 0) 3063 return (ENOTSUP); 3064 3065 snl_init_writer(&h->ss, &nw); 3066 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GET_SRCNODES); 3067 3068 if ((hdr = snl_finalize_msg(&nw)) == NULL) 3069 return (ENXIO); 3070 3071 seq_id = hdr->nlmsg_seq; 3072 3073 if (!snl_send_message(&h->ss, hdr)) 3074 return (ENXIO); 3075 3076 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) { 3077 bzero(&sn, sizeof(sn)); 3078 if (!snl_parse_nlmsg(&h->ss, hdr, &srcnode_parser, &sn)) 3079 continue; 3080 3081 ret = fn(&sn, arg); 3082 if (ret != 0) 3083 return (ret); 3084 } 3085 3086 return (e.error); 3087 } 3088 3089 static struct snl_attr_parser ap_ndel[] = { 3090 { .type = PF_T_NBR_DELETED, .off = 0, .cb = snl_attr_get_uint32 }, 3091 }; 3092 SNL_DECLARE_PARSER(ndel_parser, struct genlmsghdr, snl_f_p_empty, ap_ndel); 3093 3094 int 3095 pfctl_clear_tables(struct pfctl_handle *h, struct pfr_table *filter, 3096 int *ndel, int flags) 3097 { 3098 struct snl_writer nw; 3099 struct snl_errmsg_data e = {}; 3100 struct nlmsghdr *hdr; 3101 uint32_t seq_id; 3102 int family_id; 3103 3104 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME); 3105 if (family_id == 0) 3106 return (ENOTSUP); 3107 3108 snl_init_writer(&h->ss, &nw); 3109 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_CLEAR_TABLES); 3110 3111 snl_add_msg_attr_string(&nw, PF_T_ANCHOR, filter->pfrt_anchor); 3112 snl_add_msg_attr_string(&nw, PF_T_NAME, filter->pfrt_name); 3113 snl_add_msg_attr_u32(&nw, PF_T_TABLE_FLAGS, filter->pfrt_flags); 3114 snl_add_msg_attr_u32(&nw, PF_T_FLAGS, flags); 3115 3116 if ((hdr = snl_finalize_msg(&nw)) == NULL) 3117 return (ENXIO); 3118 3119 seq_id = hdr->nlmsg_seq; 3120 3121 if (!snl_send_message(&h->ss, hdr)) 3122 return (ENXIO); 3123 3124 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) { 3125 if (!snl_parse_nlmsg(&h->ss, hdr, &ndel_parser, ndel)) 3126 continue; 3127 } 3128 3129 return (e.error); 3130 } 3131 3132 static struct snl_attr_parser ap_nadd[] = { 3133 { .type = PF_T_NBR_ADDED, .off = 0, .cb = snl_attr_get_uint32 }, 3134 }; 3135 SNL_DECLARE_PARSER(nadd_parser, struct genlmsghdr, snl_f_p_empty, ap_nadd); 3136 int 3137 pfctl_add_table(struct pfctl_handle *h, struct pfr_table *table, 3138 int *nadd, int flags) 3139 { 3140 struct snl_writer nw; 3141 struct snl_errmsg_data e = {}; 3142 struct nlmsghdr *hdr; 3143 uint32_t seq_id; 3144 int family_id; 3145 3146 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME); 3147 if (family_id == 0) 3148 return (ENOTSUP); 3149 3150 snl_init_writer(&h->ss, &nw); 3151 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_ADD_TABLE); 3152 3153 snl_add_msg_attr_string(&nw, PF_T_ANCHOR, table->pfrt_anchor); 3154 snl_add_msg_attr_string(&nw, PF_T_NAME, table->pfrt_name); 3155 snl_add_msg_attr_u32(&nw, PF_T_TABLE_FLAGS, table->pfrt_flags); 3156 snl_add_msg_attr_u32(&nw, PF_T_FLAGS, flags); 3157 3158 if ((hdr = snl_finalize_msg(&nw)) == NULL) 3159 return (ENXIO); 3160 3161 seq_id = hdr->nlmsg_seq; 3162 3163 if (!snl_send_message(&h->ss, hdr)) 3164 return (ENXIO); 3165 3166 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) { 3167 if (!snl_parse_nlmsg(&h->ss, hdr, &nadd_parser, nadd)) 3168 continue; 3169 } 3170 3171 return (e.error); 3172 } 3173 3174 int 3175 pfctl_del_table(struct pfctl_handle *h, struct pfr_table *table, 3176 int *ndel, int flags) 3177 { 3178 struct snl_writer nw; 3179 struct snl_errmsg_data e = {}; 3180 struct nlmsghdr *hdr; 3181 uint32_t seq_id; 3182 int family_id; 3183 3184 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME); 3185 if (family_id == 0) 3186 return (ENOTSUP); 3187 3188 snl_init_writer(&h->ss, &nw); 3189 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_DEL_TABLE); 3190 3191 snl_add_msg_attr_string(&nw, PF_T_ANCHOR, table->pfrt_anchor); 3192 snl_add_msg_attr_string(&nw, PF_T_NAME, table->pfrt_name); 3193 snl_add_msg_attr_u32(&nw, PF_T_TABLE_FLAGS, table->pfrt_flags); 3194 snl_add_msg_attr_u32(&nw, PF_T_FLAGS, flags); 3195 3196 if ((hdr = snl_finalize_msg(&nw)) == NULL) 3197 return (ENXIO); 3198 3199 seq_id = hdr->nlmsg_seq; 3200 3201 if (!snl_send_message(&h->ss, hdr)) 3202 return (ENXIO); 3203 3204 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) { 3205 if (!snl_parse_nlmsg(&h->ss, hdr, &ndel_parser, ndel)) 3206 continue; 3207 } 3208 3209 return (e.error); 3210 } 3211 3212 static bool 3213 snl_attr_get_uint64_into_int_array(struct snl_state *ss, struct nlattr *nla, 3214 const void *arg, void *target) 3215 { 3216 uint64_t *u64target; 3217 struct snl_uint64_array a = { 3218 .count = 0, 3219 .max = (size_t)arg, 3220 }; 3221 bool error; 3222 3223 u64target = malloc(a.max * sizeof(uint64_t)); 3224 a.array = u64target; 3225 3226 error = snl_parse_header(ss, NLA_DATA(nla), NLA_DATA_LEN(nla), &array_parser, &a); 3227 if (! error) 3228 return (error); 3229 3230 for (size_t i = 0; i < a.count; i++) 3231 ((int *)target)[i] = (int)u64target[i]; 3232 3233 free(u64target); 3234 3235 return (true); 3236 } 3237 3238 #define _OUT(_field) offsetof(struct pfr_table, _field) 3239 static const struct snl_attr_parser ap_table[] = { 3240 { .type = PF_T_ANCHOR, .off = _OUT(pfrt_anchor), .arg = (void *)MAXPATHLEN, .cb = snl_attr_copy_string }, 3241 { .type = PF_T_NAME, .off = _OUT(pfrt_name), .arg = (void *)PF_TABLE_NAME_SIZE, .cb =snl_attr_copy_string }, 3242 { .type = PF_T_TABLE_FLAGS, .off = _OUT(pfrt_flags), .cb = snl_attr_get_uint32 }, 3243 }; 3244 #undef _OUT 3245 SNL_DECLARE_ATTR_PARSER(table_parser, ap_table); 3246 #define _OUT(_field) offsetof(struct pfr_tstats, _field) 3247 static struct snl_attr_parser ap_tstats[] = { 3248 { .type = PF_TS_TABLE, .off = _OUT(pfrts_t), .arg = &table_parser, .cb = snl_attr_get_nested }, 3249 { .type = PF_TS_PACKETS, .off = _OUT(pfrts_packets), .arg = (void *)(PFR_DIR_MAX * PFR_OP_TABLE_MAX), .cb = snl_attr_get_uint64_array}, 3250 { .type = PF_TS_BYTES, .off = _OUT(pfrts_bytes), .arg = (void *)(PFR_DIR_MAX * PFR_OP_TABLE_MAX), .cb = snl_attr_get_uint64_array }, 3251 { .type = PF_TS_MATCH, .off = _OUT(pfrts_match), .cb = snl_attr_get_uint64 }, 3252 {. type = PF_TS_NOMATCH, .off = _OUT(pfrts_nomatch), .cb = snl_attr_get_uint64 }, 3253 { .type = PF_TS_TZERO, .off = _OUT(pfrts_tzero), .cb = snl_attr_get_uint64 }, 3254 { .type = PF_TS_REFCNT, .off = _OUT(pfrts_cnt), . arg = (void *)PFR_REFCNT_MAX, .cb = snl_attr_get_uint64_into_int_array }, 3255 }; 3256 #undef _OUT 3257 SNL_DECLARE_PARSER(tstats_parser, struct genlmsghdr, snl_f_p_empty, ap_tstats); 3258 3259 int 3260 pfctl_get_tstats(struct pfctl_handle *h, const struct pfr_table *filter, 3261 pfctl_get_tstats_fn fn, void *arg) 3262 { 3263 struct snl_writer nw; 3264 struct snl_errmsg_data e = {}; 3265 struct nlmsghdr *hdr; 3266 uint32_t seq_id; 3267 int family_id; 3268 int ret; 3269 3270 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME); 3271 if (family_id == 0) 3272 return (ENOTSUP); 3273 3274 snl_init_writer(&h->ss, &nw); 3275 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GET_TSTATS); 3276 3277 snl_add_msg_attr_string(&nw, PF_T_ANCHOR, filter->pfrt_anchor); 3278 snl_add_msg_attr_string(&nw, PF_T_NAME, filter->pfrt_name); 3279 snl_add_msg_attr_u32(&nw, PF_T_TABLE_FLAGS, filter->pfrt_flags); 3280 3281 if ((hdr = snl_finalize_msg(&nw)) == NULL) 3282 return (ENXIO); 3283 3284 seq_id = hdr->nlmsg_seq; 3285 3286 if (!snl_send_message(&h->ss, hdr)) 3287 return (ENXIO); 3288 3289 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) { 3290 struct pfr_tstats tstats = {}; 3291 3292 if (!snl_parse_nlmsg(&h->ss, hdr, &tstats_parser, &tstats)) 3293 continue; 3294 3295 ret = fn(&tstats, arg); 3296 if (ret != 0) 3297 break; 3298 } 3299 3300 return (e.error); 3301 } 3302 3303 static struct snl_attr_parser ap_tstats_clr[] = { 3304 { .type = PF_TS_NZERO, .off = 0, .cb = snl_attr_get_uint64 }, 3305 }; 3306 SNL_DECLARE_PARSER(tstats_clr_parser, struct genlmsghdr, snl_f_p_empty, ap_tstats_clr); 3307 3308 int 3309 pfctl_clear_tstats(struct pfctl_handle *h, const struct pfr_table *filter, 3310 int *nzero, int flags) 3311 { 3312 struct snl_writer nw; 3313 struct snl_errmsg_data e = {}; 3314 struct nlmsghdr *hdr; 3315 uint64_t zero; 3316 uint32_t seq_id; 3317 int family_id; 3318 3319 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME); 3320 if (family_id == 0) 3321 return (ENOTSUP); 3322 3323 snl_init_writer(&h->ss, &nw); 3324 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_CLR_TSTATS); 3325 3326 snl_add_msg_attr_string(&nw, PF_T_ANCHOR, filter->pfrt_anchor); 3327 snl_add_msg_attr_string(&nw, PF_T_NAME, filter->pfrt_name); 3328 snl_add_msg_attr_u32(&nw, PF_T_TABLE_FLAGS, filter->pfrt_flags); 3329 snl_add_msg_attr_u32(&nw, PF_T_FLAGS, flags); 3330 3331 if ((hdr = snl_finalize_msg(&nw)) == NULL) 3332 return (ENXIO); 3333 3334 seq_id = hdr->nlmsg_seq; 3335 3336 if (!snl_send_message(&h->ss, hdr)) 3337 return (ENXIO); 3338 3339 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) { 3340 if (!snl_parse_nlmsg(&h->ss, hdr, &tstats_clr_parser, &zero)) 3341 continue; 3342 if (nzero) 3343 *nzero = (uint32_t)zero; 3344 } 3345 3346 return (e.error); 3347 } 3348 3349 int 3350 pfctl_clear_addrs(struct pfctl_handle *h, const struct pfr_table *filter, 3351 int *ndel, int flags) 3352 { 3353 struct snl_writer nw; 3354 struct snl_errmsg_data e = {}; 3355 struct nlmsghdr *hdr; 3356 uint64_t del; 3357 uint32_t seq_id; 3358 int family_id; 3359 3360 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME); 3361 if (family_id == 0) 3362 return (ENOTSUP); 3363 3364 snl_init_writer(&h->ss, &nw); 3365 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_CLR_ADDRS); 3366 3367 snl_add_msg_attr_string(&nw, PF_T_ANCHOR, filter->pfrt_anchor); 3368 snl_add_msg_attr_string(&nw, PF_T_NAME, filter->pfrt_name); 3369 snl_add_msg_attr_u32(&nw, PF_T_TABLE_FLAGS, filter->pfrt_flags); 3370 snl_add_msg_attr_u32(&nw, PF_T_FLAGS, flags); 3371 3372 if ((hdr = snl_finalize_msg(&nw)) == NULL) 3373 return (ENXIO); 3374 3375 seq_id = hdr->nlmsg_seq; 3376 3377 if (!snl_send_message(&h->ss, hdr)) 3378 return (ENXIO); 3379 3380 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) { 3381 if (!snl_parse_nlmsg(&h->ss, hdr, &tstats_clr_parser, &del)) 3382 continue; 3383 if (ndel) 3384 *ndel = (uint32_t)del; 3385 } 3386 3387 return (e.error); 3388 } 3389 3390