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 snl_add_msg_attr_u16(nw, PF_RT_MAX_PKT_SIZE, r->max_pkt_size); 1255 1256 snl_add_msg_attr_u16(nw, PF_RT_DNPIPE, r->dnpipe); 1257 snl_add_msg_attr_u16(nw, PF_RT_DNRPIPE, r->dnrpipe); 1258 snl_add_msg_attr_u32(nw, PF_RT_DNFLAGS, r->free_flags); 1259 1260 snl_add_msg_attr_u32(nw, PF_RT_NR, r->nr); 1261 snl_add_msg_attr_u32(nw, PF_RT_PROB, r->prob); 1262 snl_add_msg_attr_u32(nw, PF_RT_CUID, r->cuid); 1263 snl_add_msg_attr_u32(nw, PF_RT_CPID, r->cpid); 1264 1265 snl_add_msg_attr_u16(nw, PF_RT_RETURN_ICMP, r->return_icmp); 1266 snl_add_msg_attr_u16(nw, PF_RT_RETURN_ICMP6, r->return_icmp6); 1267 snl_add_msg_attr_u16(nw, PF_RT_MAX_MSS, r->max_mss); 1268 snl_add_msg_attr_u16(nw, PF_RT_SCRUB_FLAGS, r->scrub_flags); 1269 1270 snl_add_msg_attr_uid(nw, PF_RT_UID, &r->uid); 1271 snl_add_msg_attr_uid(nw, PF_RT_GID, (const struct pf_rule_uid *)&r->gid); 1272 snl_add_msg_attr_string(nw, PF_RT_RCV_IFNAME, r->rcv_ifname); 1273 snl_add_msg_attr_bool(nw, PF_RT_RCV_IFNOT, r->rcvifnot); 1274 1275 snl_add_msg_attr_u32(nw, PF_RT_RULE_FLAG, r->rule_flag); 1276 snl_add_msg_attr_u8(nw, PF_RT_ACTION, r->action); 1277 snl_add_msg_attr_u8(nw, PF_RT_DIRECTION, r->direction); 1278 snl_add_msg_attr_u8(nw, PF_RT_LOG, r->log); 1279 snl_add_msg_attr_u8(nw, PF_RT_LOGIF, r->logif); 1280 snl_add_msg_attr_u8(nw, PF_RT_QUICK, r->quick); 1281 snl_add_msg_attr_u8(nw, PF_RT_IF_NOT, r->ifnot); 1282 snl_add_msg_attr_u8(nw, PF_RT_MATCH_TAG_NOT, r->match_tag_not); 1283 snl_add_msg_attr_u8(nw, PF_RT_NATPASS, r->natpass); 1284 snl_add_msg_attr_u8(nw, PF_RT_KEEP_STATE, r->keep_state); 1285 snl_add_msg_attr_u8(nw, PF_RT_AF, r->af); 1286 snl_add_msg_attr_u8(nw, PF_RT_PROTO, r->proto); 1287 snl_add_msg_attr_u16(nw, PF_RT_TYPE_2, r->type); 1288 snl_add_msg_attr_u16(nw, PF_RT_CODE_2, r->code); 1289 snl_add_msg_attr_u8(nw, PF_RT_FLAGS, r->flags); 1290 snl_add_msg_attr_u8(nw, PF_RT_FLAGSET, r->flagset); 1291 snl_add_msg_attr_u8(nw, PF_RT_MIN_TTL, r->min_ttl); 1292 snl_add_msg_attr_u8(nw, PF_RT_ALLOW_OPTS, r->allow_opts); 1293 snl_add_msg_attr_u8(nw, PF_RT_RT, r->rt); 1294 snl_add_msg_attr_u8(nw, PF_RT_RETURN_TTL, r->return_ttl); 1295 snl_add_msg_attr_u8(nw, PF_RT_TOS, r->tos); 1296 snl_add_msg_attr_u8(nw, PF_RT_SET_TOS, r->set_tos); 1297 1298 snl_add_msg_attr_u8(nw, PF_RT_ANCHOR_RELATIVE, r->anchor_relative); 1299 snl_add_msg_attr_u8(nw, PF_RT_ANCHOR_WILDCARD, r->anchor_wildcard); 1300 snl_add_msg_attr_u8(nw, PF_RT_FLUSH, r->flush); 1301 snl_add_msg_attr_u8(nw, PF_RT_PRIO, r->prio); 1302 snl_add_msg_attr_u8(nw, PF_RT_SET_PRIO, r->set_prio[0]); 1303 snl_add_msg_attr_u8(nw, PF_RT_SET_PRIO_REPLY, r->set_prio[1]); 1304 snl_add_msg_attr_u8(nw, PF_RT_NAF, r->naf); 1305 1306 snl_add_msg_attr_ip6(nw, PF_RT_DIVERT_ADDRESS, &r->divert.addr.v6); 1307 snl_add_msg_attr_u16(nw, PF_RT_DIVERT_PORT, r->divert.port); 1308 1309 snl_end_attr_nested(nw, off); 1310 } 1311 1312 int 1313 pfctl_add_rule(int dev __unused, const struct pfctl_rule *r, const char *anchor, 1314 const char *anchor_call, uint32_t ticket, uint32_t pool_ticket) 1315 { 1316 struct pfctl_handle *h; 1317 int ret; 1318 1319 h = pfctl_open(PF_DEVICE); 1320 if (h == NULL) 1321 return (ENODEV); 1322 1323 ret = pfctl_add_rule_h(h, r, anchor, anchor_call, ticket, pool_ticket); 1324 1325 pfctl_close(h); 1326 1327 return (ret); 1328 } 1329 1330 int 1331 pfctl_add_rule_h(struct pfctl_handle *h, const struct pfctl_rule *r, 1332 const char *anchor, const char *anchor_call, uint32_t ticket, 1333 uint32_t pool_ticket) 1334 { 1335 struct snl_writer nw; 1336 struct snl_errmsg_data e = {}; 1337 struct nlmsghdr *hdr; 1338 uint32_t seq_id; 1339 int family_id; 1340 1341 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME); 1342 if (family_id == 0) 1343 return (ENOTSUP); 1344 1345 snl_init_writer(&h->ss, &nw); 1346 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_ADDRULE); 1347 hdr->nlmsg_flags |= NLM_F_DUMP; 1348 snl_add_msg_attr_u32(&nw, PF_ART_TICKET, ticket); 1349 snl_add_msg_attr_u32(&nw, PF_ART_POOL_TICKET, pool_ticket); 1350 snl_add_msg_attr_string(&nw, PF_ART_ANCHOR, anchor); 1351 snl_add_msg_attr_string(&nw, PF_ART_ANCHOR_CALL, anchor_call); 1352 1353 snl_add_msg_attr_pf_rule(&nw, PF_ART_RULE, r); 1354 1355 if ((hdr = snl_finalize_msg(&nw)) == NULL) 1356 return (ENXIO); 1357 1358 seq_id = hdr->nlmsg_seq; 1359 1360 if (! snl_send_message(&h->ss, hdr)) 1361 return (ENXIO); 1362 1363 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) { 1364 } 1365 1366 return (e.error); 1367 } 1368 1369 #define _IN(_field) offsetof(struct genlmsghdr, _field) 1370 #define _OUT(_field) offsetof(struct pfctl_rules_info, _field) 1371 static struct snl_attr_parser ap_getrules[] = { 1372 { .type = PF_GR_NR, .off = _OUT(nr), .cb = snl_attr_get_uint32 }, 1373 { .type = PF_GR_TICKET, .off = _OUT(ticket), .cb = snl_attr_get_uint32 }, 1374 }; 1375 #undef _IN 1376 #undef _OUT 1377 SNL_DECLARE_PARSER(getrules_parser, struct genlmsghdr, snl_f_p_empty, ap_getrules); 1378 1379 int 1380 pfctl_get_rules_info_h(struct pfctl_handle *h, struct pfctl_rules_info *rules, uint32_t ruleset, 1381 const char *path) 1382 { 1383 struct snl_errmsg_data e = {}; 1384 struct nlmsghdr *hdr; 1385 struct snl_writer nw; 1386 uint32_t seq_id; 1387 int family_id; 1388 1389 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME); 1390 if (family_id == 0) 1391 return (ENOTSUP); 1392 1393 snl_init_writer(&h->ss, &nw); 1394 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GETRULES); 1395 hdr->nlmsg_flags |= NLM_F_DUMP; 1396 1397 snl_add_msg_attr_string(&nw, PF_GR_ANCHOR, path); 1398 snl_add_msg_attr_u8(&nw, PF_GR_ACTION, ruleset); 1399 1400 hdr = snl_finalize_msg(&nw); 1401 if (hdr == NULL) 1402 return (ENOMEM); 1403 1404 seq_id = hdr->nlmsg_seq; 1405 if (! snl_send_message(&h->ss, hdr)) 1406 return (ENXIO); 1407 1408 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) { 1409 if (! snl_parse_nlmsg(&h->ss, hdr, &getrules_parser, rules)) 1410 continue; 1411 } 1412 1413 return (e.error); 1414 } 1415 1416 int 1417 pfctl_get_rules_info(int dev __unused, struct pfctl_rules_info *rules, uint32_t ruleset, 1418 const char *path) 1419 { 1420 struct pfctl_handle *h; 1421 int error; 1422 1423 h = pfctl_open(PF_DEVICE); 1424 if (h == NULL) 1425 return (ENOTSUP); 1426 error = pfctl_get_rules_info_h(h, rules, ruleset, path); 1427 pfctl_close(h); 1428 1429 return (error); 1430 } 1431 1432 int 1433 pfctl_get_rule_h(struct pfctl_handle *h, uint32_t nr, uint32_t ticket, const char *anchor, 1434 uint32_t ruleset, struct pfctl_rule *rule, char *anchor_call) 1435 { 1436 return (pfctl_get_clear_rule_h(h, nr, ticket, anchor, ruleset, rule, 1437 anchor_call, false)); 1438 } 1439 1440 int 1441 pfctl_get_rule(int dev, uint32_t nr, uint32_t ticket, const char *anchor, 1442 uint32_t ruleset, struct pfctl_rule *rule, char *anchor_call) 1443 { 1444 return (pfctl_get_clear_rule(dev, nr, ticket, anchor, ruleset, rule, 1445 anchor_call, false)); 1446 } 1447 1448 #define _OUT(_field) offsetof(struct pf_addr_wrap, _field) 1449 static const struct snl_attr_parser ap_addr_wrap[] = { 1450 { .type = PF_AT_ADDR, .off = _OUT(v.a.addr), .cb = snl_attr_get_in6_addr }, 1451 { .type = PF_AT_MASK, .off = _OUT(v.a.mask), .cb = snl_attr_get_in6_addr }, 1452 { .type = PF_AT_IFNAME, .off = _OUT(v.ifname), .arg = (void *)IFNAMSIZ,.cb = snl_attr_copy_string }, 1453 { .type = PF_AT_TABLENAME, .off = _OUT(v.tblname), .arg = (void *)PF_TABLE_NAME_SIZE, .cb = snl_attr_copy_string }, 1454 { .type = PF_AT_TYPE, .off = _OUT(type), .cb = snl_attr_get_uint8 }, 1455 { .type = PF_AT_IFLAGS, .off = _OUT(iflags), .cb = snl_attr_get_uint8 }, 1456 { .type = PF_AT_TBLCNT, .off = _OUT(p.tblcnt), .cb = snl_attr_get_uint32 }, 1457 { .type = PF_AT_DYNCNT, .off = _OUT(p.dyncnt), .cb = snl_attr_get_uint32 }, 1458 }; 1459 SNL_DECLARE_ATTR_PARSER(addr_wrap_parser, ap_addr_wrap); 1460 #undef _OUT 1461 1462 #define _OUT(_field) offsetof(struct pf_rule_addr, _field) 1463 static struct snl_attr_parser ap_rule_addr[] = { 1464 { .type = PF_RAT_ADDR, .off = _OUT(addr), .arg = &addr_wrap_parser, .cb = snl_attr_get_nested }, 1465 { .type = PF_RAT_SRC_PORT, .off = _OUT(port[0]), .cb = snl_attr_get_uint16 }, 1466 { .type = PF_RAT_DST_PORT, .off = _OUT(port[1]), .cb = snl_attr_get_uint16 }, 1467 { .type = PF_RAT_NEG, .off = _OUT(neg), .cb = snl_attr_get_uint8 }, 1468 { .type = PF_RAT_OP, .off = _OUT(port_op), .cb = snl_attr_get_uint8 }, 1469 }; 1470 #undef _OUT 1471 SNL_DECLARE_ATTR_PARSER(rule_addr_parser, ap_rule_addr); 1472 1473 struct snl_parsed_labels 1474 { 1475 char labels[PF_RULE_MAX_LABEL_COUNT][PF_RULE_LABEL_SIZE]; 1476 uint32_t i; 1477 }; 1478 1479 static bool 1480 snl_attr_get_pf_rule_labels(struct snl_state *ss, struct nlattr *nla, 1481 const void *arg __unused, void *target) 1482 { 1483 struct snl_parsed_labels *l = (struct snl_parsed_labels *)target; 1484 bool ret; 1485 1486 if (l->i >= PF_RULE_MAX_LABEL_COUNT) 1487 return (E2BIG); 1488 1489 ret = snl_attr_copy_string(ss, nla, (void *)PF_RULE_LABEL_SIZE, 1490 l->labels[l->i]); 1491 if (ret) 1492 l->i++; 1493 1494 return (ret); 1495 } 1496 1497 #define _OUT(_field) offsetof(struct nl_parsed_labels, _field) 1498 static const struct snl_attr_parser ap_labels[] = { 1499 { .type = PF_LT_LABEL, .off = 0, .cb = snl_attr_get_pf_rule_labels }, 1500 }; 1501 SNL_DECLARE_ATTR_PARSER(rule_labels_parser, ap_labels); 1502 #undef _OUT 1503 1504 static bool 1505 snl_attr_get_nested_pf_rule_labels(struct snl_state *ss, struct nlattr *nla, 1506 const void *arg __unused, void *target) 1507 { 1508 struct snl_parsed_labels parsed_labels = { }; 1509 bool error; 1510 1511 /* Assumes target points to the beginning of the structure */ 1512 error = snl_parse_header(ss, NLA_DATA(nla), NLA_DATA_LEN(nla), &rule_labels_parser, &parsed_labels); 1513 if (! error) 1514 return (error); 1515 1516 memcpy(target, parsed_labels.labels, sizeof(parsed_labels.labels)); 1517 1518 return (true); 1519 } 1520 1521 #define _OUT(_field) offsetof(struct pf_mape_portset, _field) 1522 static const struct snl_attr_parser ap_mape_portset[] = { 1523 { .type = PF_MET_OFFSET, .off = _OUT(offset), .cb = snl_attr_get_uint8 }, 1524 { .type = PF_MET_PSID_LEN, .off = _OUT(psidlen), .cb = snl_attr_get_uint8 }, 1525 {. type = PF_MET_PSID, .off = _OUT(psid), .cb = snl_attr_get_uint16 }, 1526 }; 1527 SNL_DECLARE_ATTR_PARSER(mape_portset_parser, ap_mape_portset); 1528 #undef _OUT 1529 1530 #define _OUT(_field) offsetof(struct pfctl_pool, _field) 1531 static const struct snl_attr_parser ap_pool[] = { 1532 { .type = PF_PT_KEY, .off = _OUT(key), .arg = (void *)sizeof(struct pf_poolhashkey), .cb = snl_attr_get_bytes }, 1533 { .type = PF_PT_COUNTER, .off = _OUT(counter), .cb = snl_attr_get_in6_addr }, 1534 { .type = PF_PT_TBLIDX, .off = _OUT(tblidx), .cb = snl_attr_get_uint32 }, 1535 { .type = PF_PT_PROXY_SRC_PORT, .off = _OUT(proxy_port[0]), .cb = snl_attr_get_uint16 }, 1536 { .type = PF_PT_PROXY_DST_PORT, .off = _OUT(proxy_port[1]), .cb = snl_attr_get_uint16 }, 1537 { .type = PF_PT_OPTS, .off = _OUT(opts), .cb = snl_attr_get_uint8 }, 1538 { .type = PF_PT_MAPE, .off = _OUT(mape), .arg = &mape_portset_parser, .cb = snl_attr_get_nested }, 1539 }; 1540 SNL_DECLARE_ATTR_PARSER(pool_parser, ap_pool); 1541 #undef _OUT 1542 1543 struct nl_parsed_timeouts 1544 { 1545 uint32_t timeouts[PFTM_MAX]; 1546 uint32_t i; 1547 }; 1548 1549 static bool 1550 snl_attr_get_pf_timeout(struct snl_state *ss, struct nlattr *nla, 1551 const void *arg __unused, void *target) 1552 { 1553 struct nl_parsed_timeouts *t = (struct nl_parsed_timeouts *)target; 1554 bool ret; 1555 1556 if (t->i >= PFTM_MAX) 1557 return (E2BIG); 1558 1559 ret = snl_attr_get_uint32(ss, nla, NULL, &t->timeouts[t->i]); 1560 if (ret) 1561 t->i++; 1562 1563 return (ret); 1564 } 1565 1566 #define _OUT(_field) offsetof(struct nl_parsed_timeout, _field) 1567 static const struct snl_attr_parser ap_timeouts[] = { 1568 { .type = PF_TT_TIMEOUT, .off = 0, .cb = snl_attr_get_pf_timeout }, 1569 }; 1570 SNL_DECLARE_ATTR_PARSER(timeout_parser, ap_timeouts); 1571 #undef _OUT 1572 1573 static bool 1574 snl_attr_get_nested_timeouts(struct snl_state *ss, struct nlattr *nla, 1575 const void *arg __unused, void *target) 1576 { 1577 struct nl_parsed_timeouts parsed_timeouts = { }; 1578 bool error; 1579 1580 /* Assumes target points to the beginning of the structure */ 1581 error = snl_parse_header(ss, NLA_DATA(nla), NLA_DATA_LEN(nla), &timeout_parser, &parsed_timeouts); 1582 if (! error) 1583 return (error); 1584 1585 memcpy(target, parsed_timeouts.timeouts, sizeof(parsed_timeouts.timeouts)); 1586 1587 return (true); 1588 } 1589 1590 #define _OUT(_field) offsetof(struct pf_rule_uid, _field) 1591 static const struct snl_attr_parser ap_rule_uid[] = { 1592 { .type = PF_RUT_UID_LOW, .off = _OUT(uid[0]), .cb = snl_attr_get_uint32 }, 1593 { .type = PF_RUT_UID_HIGH, .off = _OUT(uid[1]), .cb = snl_attr_get_uint32 }, 1594 { .type = PF_RUT_OP, .off = _OUT(op), .cb = snl_attr_get_uint8 }, 1595 }; 1596 SNL_DECLARE_ATTR_PARSER(rule_uid_parser, ap_rule_uid); 1597 #undef _OUT 1598 1599 #define _OUT(_field) offsetof(struct pfctl_threshold, _field) 1600 static const struct snl_attr_parser ap_pfctl_threshold[] = { 1601 { .type = PF_TH_LIMIT, .off = _OUT(limit), .cb = snl_attr_get_uint32 }, 1602 { .type = PF_TH_SECONDS, .off = _OUT(seconds), .cb = snl_attr_get_uint32 }, 1603 { .type = PF_TH_COUNT, .off = _OUT(count), .cb = snl_attr_get_uint32 }, 1604 }; 1605 SNL_DECLARE_ATTR_PARSER(pfctl_threshold_parser, ap_pfctl_threshold); 1606 #undef _OUT 1607 1608 struct pfctl_nl_get_rule { 1609 struct pfctl_rule r; 1610 char anchor_call[MAXPATHLEN]; 1611 }; 1612 #define _OUT(_field) offsetof(struct pfctl_nl_get_rule, _field) 1613 static struct snl_attr_parser ap_getrule[] = { 1614 { .type = PF_RT_SRC, .off = _OUT(r.src), .arg = &rule_addr_parser,.cb = snl_attr_get_nested }, 1615 { .type = PF_RT_DST, .off = _OUT(r.dst), .arg = &rule_addr_parser,.cb = snl_attr_get_nested }, 1616 { .type = PF_RT_RIDENTIFIER, .off = _OUT(r.ridentifier), .cb = snl_attr_get_uint32 }, 1617 { .type = PF_RT_LABELS, .off = _OUT(r.label), .arg = &rule_labels_parser,.cb = snl_attr_get_nested_pf_rule_labels }, 1618 { .type = PF_RT_IFNAME, .off = _OUT(r.ifname), .arg = (void *)IFNAMSIZ, .cb = snl_attr_copy_string }, 1619 { .type = PF_RT_QNAME, .off = _OUT(r.qname), .arg = (void *)PF_QNAME_SIZE, .cb = snl_attr_copy_string }, 1620 { .type = PF_RT_PQNAME, .off = _OUT(r.pqname), .arg = (void *)PF_QNAME_SIZE, .cb = snl_attr_copy_string }, 1621 { .type = PF_RT_TAGNAME, .off = _OUT(r.tagname), .arg = (void *)PF_TAG_NAME_SIZE, .cb = snl_attr_copy_string }, 1622 { .type = PF_RT_MATCH_TAGNAME, .off = _OUT(r.match_tagname), .arg = (void *)PF_TAG_NAME_SIZE, .cb = snl_attr_copy_string }, 1623 { .type = PF_RT_OVERLOAD_TBLNAME, .off = _OUT(r.overload_tblname), .arg = (void *)PF_TABLE_NAME_SIZE, .cb = snl_attr_copy_string }, 1624 { .type = PF_RT_RPOOL_RDR, .off = _OUT(r.rdr), .arg = &pool_parser, .cb = snl_attr_get_nested }, 1625 { .type = PF_RT_OS_FINGERPRINT, .off = _OUT(r.os_fingerprint), .cb = snl_attr_get_uint32 }, 1626 { .type = PF_RT_RTABLEID, .off = _OUT(r.rtableid), .cb = snl_attr_get_uint32 }, 1627 { .type = PF_RT_TIMEOUT, .off = _OUT(r.timeout), .arg = &timeout_parser, .cb = snl_attr_get_nested_timeouts }, 1628 { .type = PF_RT_MAX_STATES, .off = _OUT(r.max_states), .cb = snl_attr_get_uint32 }, 1629 { .type = PF_RT_MAX_SRC_NODES, .off = _OUT(r.max_src_nodes), .cb = snl_attr_get_uint32 }, 1630 { .type = PF_RT_MAX_SRC_STATES, .off = _OUT(r.max_src_states), .cb = snl_attr_get_uint32 }, 1631 { .type = PF_RT_MAX_SRC_CONN_RATE_LIMIT, .off = _OUT(r.max_src_conn_rate.limit), .cb = snl_attr_get_uint32 }, 1632 { .type = PF_RT_MAX_SRC_CONN_RATE_SECS, .off = _OUT(r.max_src_conn_rate.seconds), .cb = snl_attr_get_uint32 }, 1633 { .type = PF_RT_DNPIPE, .off = _OUT(r.dnpipe), .cb = snl_attr_get_uint16 }, 1634 { .type = PF_RT_DNRPIPE, .off = _OUT(r.dnrpipe), .cb = snl_attr_get_uint16 }, 1635 { .type = PF_RT_DNFLAGS, .off = _OUT(r.free_flags), .cb = snl_attr_get_uint32 }, 1636 { .type = PF_RT_NR, .off = _OUT(r.nr), .cb = snl_attr_get_uint32 }, 1637 { .type = PF_RT_PROB, .off = _OUT(r.prob), .cb = snl_attr_get_uint32 }, 1638 { .type = PF_RT_CUID, .off = _OUT(r.cuid), .cb = snl_attr_get_uint32 }, 1639 {. type = PF_RT_CPID, .off = _OUT(r.cpid), .cb = snl_attr_get_uint32 }, 1640 { .type = PF_RT_RETURN_ICMP, .off = _OUT(r.return_icmp), .cb = snl_attr_get_uint16 }, 1641 { .type = PF_RT_RETURN_ICMP6, .off = _OUT(r.return_icmp6), .cb = snl_attr_get_uint16 }, 1642 { .type = PF_RT_MAX_MSS, .off = _OUT(r.max_mss), .cb = snl_attr_get_uint16 }, 1643 { .type = PF_RT_SCRUB_FLAGS, .off = _OUT(r.scrub_flags), .cb = snl_attr_get_uint16 }, 1644 { .type = PF_RT_UID, .off = _OUT(r.uid), .arg = &rule_uid_parser, .cb = snl_attr_get_nested }, 1645 { .type = PF_RT_GID, .off = _OUT(r.gid), .arg = &rule_uid_parser, .cb = snl_attr_get_nested }, 1646 { .type = PF_RT_RULE_FLAG, .off = _OUT(r.rule_flag), .cb = snl_attr_get_uint32 }, 1647 { .type = PF_RT_ACTION, .off = _OUT(r.action), .cb = snl_attr_get_uint8 }, 1648 { .type = PF_RT_DIRECTION, .off = _OUT(r.direction), .cb = snl_attr_get_uint8 }, 1649 { .type = PF_RT_LOG, .off = _OUT(r.log), .cb = snl_attr_get_uint8 }, 1650 { .type = PF_RT_LOGIF, .off = _OUT(r.logif), .cb = snl_attr_get_uint8 }, 1651 { .type = PF_RT_QUICK, .off = _OUT(r.quick), .cb = snl_attr_get_uint8 }, 1652 { .type = PF_RT_IF_NOT, .off = _OUT(r.ifnot), .cb = snl_attr_get_uint8 }, 1653 { .type = PF_RT_MATCH_TAG_NOT, .off = _OUT(r.match_tag_not), .cb = snl_attr_get_uint8 }, 1654 { .type = PF_RT_NATPASS, .off = _OUT(r.natpass), .cb = snl_attr_get_uint8 }, 1655 { .type = PF_RT_KEEP_STATE, .off = _OUT(r.keep_state), .cb = snl_attr_get_uint8 }, 1656 { .type = PF_RT_AF, .off = _OUT(r.af), .cb = snl_attr_get_uint8 }, 1657 { .type = PF_RT_PROTO, .off = _OUT(r.proto), .cb = snl_attr_get_uint8 }, 1658 { .type = PF_RT_TYPE, .off = _OUT(r.type), .cb = snl_attr_get_uint8 }, 1659 { .type = PF_RT_CODE, .off = _OUT(r.code), .cb = snl_attr_get_uint8 }, 1660 { .type = PF_RT_FLAGS, .off = _OUT(r.flags), .cb = snl_attr_get_uint8 }, 1661 { .type = PF_RT_FLAGSET, .off = _OUT(r.flagset), .cb = snl_attr_get_uint8 }, 1662 { .type = PF_RT_MIN_TTL, .off = _OUT(r.min_ttl), .cb = snl_attr_get_uint8 }, 1663 { .type = PF_RT_ALLOW_OPTS, .off = _OUT(r.allow_opts), .cb = snl_attr_get_uint8 }, 1664 { .type = PF_RT_RT, .off = _OUT(r.rt), .cb = snl_attr_get_uint8 }, 1665 { .type = PF_RT_RETURN_TTL, .off = _OUT(r.return_ttl), .cb = snl_attr_get_uint8 }, 1666 { .type = PF_RT_TOS, .off = _OUT(r.tos), .cb = snl_attr_get_uint8 }, 1667 { .type = PF_RT_SET_TOS, .off = _OUT(r.set_tos), .cb = snl_attr_get_uint8 }, 1668 { .type = PF_RT_ANCHOR_RELATIVE, .off = _OUT(r.anchor_relative), .cb = snl_attr_get_uint8 }, 1669 { .type = PF_RT_ANCHOR_WILDCARD, .off = _OUT(r.anchor_wildcard), .cb = snl_attr_get_uint8 }, 1670 { .type = PF_RT_FLUSH, .off = _OUT(r.flush), .cb = snl_attr_get_uint8 }, 1671 { .type = PF_RT_PRIO, .off = _OUT(r.prio), .cb = snl_attr_get_uint8 }, 1672 { .type = PF_RT_SET_PRIO, .off = _OUT(r.set_prio[0]), .cb = snl_attr_get_uint8 }, 1673 { .type = PF_RT_SET_PRIO_REPLY, .off = _OUT(r.set_prio[1]), .cb = snl_attr_get_uint8 }, 1674 { .type = PF_RT_DIVERT_ADDRESS, .off = _OUT(r.divert.addr), .cb = snl_attr_get_in6_addr }, 1675 { .type = PF_RT_DIVERT_PORT, .off = _OUT(r.divert.port), .cb = snl_attr_get_uint16 }, 1676 { .type = PF_RT_PACKETS_IN, .off = _OUT(r.packets[0]), .cb = snl_attr_get_uint64 }, 1677 { .type = PF_RT_PACKETS_OUT, .off = _OUT(r.packets[1]), .cb = snl_attr_get_uint64 }, 1678 { .type = PF_RT_BYTES_IN, .off = _OUT(r.bytes[0]), .cb = snl_attr_get_uint64 }, 1679 { .type = PF_RT_BYTES_OUT, .off = _OUT(r.bytes[1]), .cb = snl_attr_get_uint64 }, 1680 { .type = PF_RT_EVALUATIONS, .off = _OUT(r.evaluations), .cb = snl_attr_get_uint64 }, 1681 { .type = PF_RT_TIMESTAMP, .off = _OUT(r.last_active_timestamp), .cb = snl_attr_get_uint64 }, 1682 { .type = PF_RT_STATES_CUR, .off = _OUT(r.states_cur), .cb = snl_attr_get_uint64 }, 1683 { .type = PF_RT_STATES_TOTAL, .off = _OUT(r.states_tot), .cb = snl_attr_get_uint64 }, 1684 { .type = PF_RT_SRC_NODES, .off = _OUT(r.src_nodes), .cb = snl_attr_get_uint64 }, 1685 { .type = PF_RT_ANCHOR_CALL, .off = _OUT(anchor_call), .arg = (void*)MAXPATHLEN, .cb = snl_attr_copy_string }, 1686 { .type = PF_RT_RCV_IFNAME, .off = _OUT(r.rcv_ifname), .arg = (void*)IFNAMSIZ, .cb = snl_attr_copy_string }, 1687 { .type = PF_RT_MAX_SRC_CONN, .off = _OUT(r.max_src_conn), .cb = snl_attr_get_uint32 }, 1688 { .type = PF_RT_RPOOL_NAT, .off = _OUT(r.nat), .arg = &pool_parser, .cb = snl_attr_get_nested }, 1689 { .type = PF_RT_NAF, .off = _OUT(r.naf), .cb = snl_attr_get_uint8 }, 1690 { .type = PF_RT_RPOOL_RT, .off = _OUT(r.route), .arg = &pool_parser, .cb = snl_attr_get_nested }, 1691 { .type = PF_RT_RCV_IFNOT, .off = _OUT(r.rcvifnot),.cb = snl_attr_get_bool }, 1692 { .type = PF_RT_SRC_NODES_LIMIT, .off = _OUT(r.src_nodes_type[PF_SN_LIMIT]), .cb = snl_attr_get_uint64 }, 1693 { .type = PF_RT_SRC_NODES_NAT, .off = _OUT(r.src_nodes_type[PF_SN_NAT]), .cb = snl_attr_get_uint64 }, 1694 { .type = PF_RT_SRC_NODES_ROUTE, .off = _OUT(r.src_nodes_type[PF_SN_ROUTE]), .cb = snl_attr_get_uint64 }, 1695 { .type = PF_RT_PKTRATE, .off = _OUT(r.pktrate), .arg = &pfctl_threshold_parser, .cb = snl_attr_get_nested }, 1696 { .type = PF_RT_MAX_PKT_SIZE, .off =_OUT(r.max_pkt_size), .cb = snl_attr_get_uint16 }, 1697 { .type = PF_RT_TYPE_2, .off = _OUT(r.type), .cb = snl_attr_get_uint16 }, 1698 { .type = PF_RT_CODE_2, .off = _OUT(r.code), .cb = snl_attr_get_uint16 }, 1699 }; 1700 #undef _OUT 1701 SNL_DECLARE_PARSER(getrule_parser, struct genlmsghdr, snl_f_p_empty, ap_getrule); 1702 1703 int 1704 pfctl_get_clear_rule_h(struct pfctl_handle *h, uint32_t nr, uint32_t ticket, 1705 const char *anchor, uint32_t ruleset, struct pfctl_rule *rule, 1706 char *anchor_call, bool clear) 1707 { 1708 struct pfctl_nl_get_rule attrs = {}; 1709 struct snl_errmsg_data e = {}; 1710 struct nlmsghdr *hdr; 1711 struct snl_writer nw; 1712 uint32_t seq_id; 1713 int family_id; 1714 1715 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME); 1716 if (family_id == 0) 1717 return (ENOTSUP); 1718 1719 snl_init_writer(&h->ss, &nw); 1720 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GETRULE); 1721 hdr->nlmsg_flags |= NLM_F_DUMP; 1722 1723 snl_add_msg_attr_string(&nw, PF_GR_ANCHOR, anchor); 1724 snl_add_msg_attr_u8(&nw, PF_GR_ACTION, ruleset); 1725 snl_add_msg_attr_u32(&nw, PF_GR_NR, nr); 1726 snl_add_msg_attr_u32(&nw, PF_GR_TICKET, ticket); 1727 snl_add_msg_attr_u8(&nw, PF_GR_CLEAR, clear); 1728 1729 hdr = snl_finalize_msg(&nw); 1730 if (hdr == NULL) 1731 return (ENOMEM); 1732 1733 seq_id = hdr->nlmsg_seq; 1734 if (! snl_send_message(&h->ss, hdr)) 1735 return (ENXIO); 1736 1737 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) { 1738 if (! snl_parse_nlmsg(&h->ss, hdr, &getrule_parser, &attrs)) 1739 continue; 1740 } 1741 1742 memcpy(rule, &attrs.r, sizeof(attrs.r)); 1743 strlcpy(anchor_call, attrs.anchor_call, MAXPATHLEN); 1744 1745 return (e.error); 1746 } 1747 1748 int 1749 pfctl_get_clear_rule(int dev, uint32_t nr, uint32_t ticket, 1750 const char *anchor, uint32_t ruleset, struct pfctl_rule *rule, 1751 char *anchor_call, bool clear) 1752 { 1753 nvlist_t *nvl; 1754 int ret; 1755 1756 nvl = nvlist_create(0); 1757 if (nvl == 0) 1758 return (ENOMEM); 1759 1760 nvlist_add_number(nvl, "nr", nr); 1761 nvlist_add_number(nvl, "ticket", ticket); 1762 nvlist_add_string(nvl, "anchor", anchor); 1763 nvlist_add_number(nvl, "ruleset", ruleset); 1764 1765 if (clear) 1766 nvlist_add_bool(nvl, "clear_counter", true); 1767 1768 if ((ret = pfctl_do_ioctl(dev, DIOCGETRULENV, 8192, &nvl)) != 0) 1769 goto out; 1770 1771 pf_nvrule_to_rule(nvlist_get_nvlist(nvl, "rule"), rule); 1772 1773 if (anchor_call) 1774 strlcpy(anchor_call, nvlist_get_string(nvl, "anchor_call"), 1775 MAXPATHLEN); 1776 1777 out: 1778 nvlist_destroy(nvl); 1779 return (ret); 1780 } 1781 1782 int 1783 pfctl_set_keepcounters(int dev, bool keep) 1784 { 1785 struct pfioc_nv nv; 1786 nvlist_t *nvl; 1787 int ret; 1788 1789 nvl = nvlist_create(0); 1790 1791 nvlist_add_bool(nvl, "keep_counters", keep); 1792 1793 nv.data = nvlist_pack(nvl, &nv.len); 1794 nv.size = nv.len; 1795 1796 nvlist_destroy(nvl); 1797 1798 ret = ioctl(dev, DIOCKEEPCOUNTERS, &nv); 1799 1800 free(nv.data); 1801 return (ret); 1802 } 1803 1804 struct pfctl_creator { 1805 uint32_t id; 1806 }; 1807 #define _IN(_field) offsetof(struct genlmsghdr, _field) 1808 #define _OUT(_field) offsetof(struct pfctl_creator, _field) 1809 static struct snl_attr_parser ap_creators[] = { 1810 { .type = PF_ST_CREATORID, .off = _OUT(id), .cb = snl_attr_get_uint32 }, 1811 }; 1812 #undef _IN 1813 #undef _OUT 1814 SNL_DECLARE_PARSER(creator_parser, struct genlmsghdr, snl_f_p_empty, ap_creators); 1815 1816 static int 1817 pfctl_get_creators_nl(struct snl_state *ss, uint32_t *creators, size_t *len) 1818 { 1819 1820 int family_id = snl_get_genl_family(ss, PFNL_FAMILY_NAME); 1821 size_t i = 0; 1822 1823 struct nlmsghdr *hdr; 1824 struct snl_writer nw; 1825 1826 if (family_id == 0) 1827 return (ENOTSUP); 1828 1829 snl_init_writer(ss, &nw); 1830 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GETCREATORS); 1831 hdr->nlmsg_flags |= NLM_F_DUMP; 1832 hdr = snl_finalize_msg(&nw); 1833 if (hdr == NULL) 1834 return (ENOMEM); 1835 uint32_t seq_id = hdr->nlmsg_seq; 1836 1837 snl_send_message(ss, hdr); 1838 1839 struct snl_errmsg_data e = {}; 1840 while ((hdr = snl_read_reply_multi(ss, seq_id, &e)) != NULL) { 1841 struct pfctl_creator c; 1842 bzero(&c, sizeof(c)); 1843 1844 if (!snl_parse_nlmsg(ss, hdr, &creator_parser, &c)) 1845 continue; 1846 1847 creators[i] = c.id; 1848 i++; 1849 if (i > *len) 1850 return (E2BIG); 1851 } 1852 1853 *len = i; 1854 1855 return (0); 1856 } 1857 1858 int 1859 pfctl_get_creatorids(struct pfctl_handle *h, uint32_t *creators, size_t *len) 1860 { 1861 int error; 1862 1863 error = pfctl_get_creators_nl(&h->ss, creators, len); 1864 1865 return (error); 1866 } 1867 1868 static inline bool 1869 snl_attr_get_pfaddr(struct snl_state *ss __unused, struct nlattr *nla, 1870 const void *arg __unused, void *target) 1871 { 1872 memcpy(target, NLA_DATA(nla), NLA_DATA_LEN(nla)); 1873 return (true); 1874 } 1875 1876 static inline bool 1877 snl_attr_store_ifname(struct snl_state *ss __unused, struct nlattr *nla, 1878 const void *arg __unused, void *target) 1879 { 1880 size_t maxlen = NLA_DATA_LEN(nla); 1881 1882 if (strnlen((char *)NLA_DATA(nla), maxlen) < maxlen) { 1883 strlcpy(target, (char *)NLA_DATA(nla), maxlen); 1884 return (true); 1885 } 1886 return (false); 1887 } 1888 1889 #define _OUT(_field) offsetof(struct pfctl_state_peer, _field) 1890 static const struct snl_attr_parser nla_p_speer[] = { 1891 { .type = PF_STP_SEQLO, .off = _OUT(seqlo), .cb = snl_attr_get_uint32 }, 1892 { .type = PF_STP_SEQHI, .off = _OUT(seqhi), .cb = snl_attr_get_uint32 }, 1893 { .type = PF_STP_SEQDIFF, .off = _OUT(seqdiff), .cb = snl_attr_get_uint32 }, 1894 { .type = PF_STP_STATE, .off = _OUT(state), .cb = snl_attr_get_uint8 }, 1895 { .type = PF_STP_WSCALE, .off = _OUT(wscale), .cb = snl_attr_get_uint8 }, 1896 }; 1897 SNL_DECLARE_ATTR_PARSER(speer_parser, nla_p_speer); 1898 #undef _OUT 1899 1900 #define _OUT(_field) offsetof(struct pfctl_state_key, _field) 1901 static const struct snl_attr_parser nla_p_skey[] = { 1902 { .type = PF_STK_ADDR0, .off = _OUT(addr[0]), .cb = snl_attr_get_pfaddr }, 1903 { .type = PF_STK_ADDR1, .off = _OUT(addr[1]), .cb = snl_attr_get_pfaddr }, 1904 { .type = PF_STK_PORT0, .off = _OUT(port[0]), .cb = snl_attr_get_uint16 }, 1905 { .type = PF_STK_PORT1, .off = _OUT(port[1]), .cb = snl_attr_get_uint16 }, 1906 { .type = PF_STK_AF, .off = _OUT(af), .cb = snl_attr_get_uint8 }, 1907 { .type = PF_STK_PROTO, .off = _OUT(proto), .cb = snl_attr_get_uint16 }, 1908 }; 1909 SNL_DECLARE_ATTR_PARSER(skey_parser, nla_p_skey); 1910 #undef _OUT 1911 1912 #define _IN(_field) offsetof(struct genlmsghdr, _field) 1913 #define _OUT(_field) offsetof(struct pfctl_state, _field) 1914 static struct snl_attr_parser ap_state[] = { 1915 { .type = PF_ST_ID, .off = _OUT(id), .cb = snl_attr_get_uint64 }, 1916 { .type = PF_ST_CREATORID, .off = _OUT(creatorid), .cb = snl_attr_get_uint32 }, 1917 { .type = PF_ST_IFNAME, .off = _OUT(ifname), .cb = snl_attr_store_ifname }, 1918 { .type = PF_ST_ORIG_IFNAME, .off = _OUT(orig_ifname), .cb = snl_attr_store_ifname }, 1919 { .type = PF_ST_KEY_WIRE, .off = _OUT(key[0]), .arg = &skey_parser, .cb = snl_attr_get_nested }, 1920 { .type = PF_ST_KEY_STACK, .off = _OUT(key[1]), .arg = &skey_parser, .cb = snl_attr_get_nested }, 1921 { .type = PF_ST_PEER_SRC, .off = _OUT(src), .arg = &speer_parser, .cb = snl_attr_get_nested }, 1922 { .type = PF_ST_PEER_DST, .off = _OUT(dst), .arg = &speer_parser, .cb = snl_attr_get_nested }, 1923 { .type = PF_ST_RT_ADDR, .off = _OUT(rt_addr), .cb = snl_attr_get_pfaddr }, 1924 { .type = PF_ST_RULE, .off = _OUT(rule), .cb = snl_attr_get_uint32 }, 1925 { .type = PF_ST_ANCHOR, .off = _OUT(anchor), .cb = snl_attr_get_uint32 }, 1926 { .type = PF_ST_NAT_RULE, .off = _OUT(nat_rule), .cb = snl_attr_get_uint32 }, 1927 { .type = PF_ST_CREATION, .off = _OUT(creation), .cb = snl_attr_get_uint32 }, 1928 { .type = PF_ST_EXPIRE, .off = _OUT(expire), .cb = snl_attr_get_uint32 }, 1929 { .type = PF_ST_PACKETS0, .off = _OUT(packets[0]), .cb = snl_attr_get_uint64 }, 1930 { .type = PF_ST_PACKETS1, .off = _OUT(packets[1]), .cb = snl_attr_get_uint64 }, 1931 { .type = PF_ST_BYTES0, .off = _OUT(bytes[0]), .cb = snl_attr_get_uint64 }, 1932 { .type = PF_ST_BYTES1, .off = _OUT(bytes[1]), .cb = snl_attr_get_uint64 }, 1933 { .type = PF_ST_DIRECTION, .off = _OUT(direction), .cb = snl_attr_get_uint8 }, 1934 { .type = PF_ST_LOG, .off = _OUT(log), .cb = snl_attr_get_uint8 }, 1935 { .type = PF_ST_STATE_FLAGS, .off = _OUT(state_flags), .cb = snl_attr_get_uint16 }, 1936 { .type = PF_ST_SYNC_FLAGS, .off = _OUT(sync_flags), .cb = snl_attr_get_uint8 }, 1937 { .type = PF_ST_RTABLEID, .off = _OUT(rtableid), .cb = snl_attr_get_int32 }, 1938 { .type = PF_ST_MIN_TTL, .off = _OUT(min_ttl), .cb = snl_attr_get_uint8 }, 1939 { .type = PF_ST_MAX_MSS, .off = _OUT(max_mss), .cb = snl_attr_get_uint16 }, 1940 { .type = PF_ST_DNPIPE, .off = _OUT(dnpipe), .cb = snl_attr_get_uint16 }, 1941 { .type = PF_ST_DNRPIPE, .off = _OUT(dnrpipe), .cb = snl_attr_get_uint16 }, 1942 { .type = PF_ST_RT, .off = _OUT(rt), .cb = snl_attr_get_uint8 }, 1943 { .type = PF_ST_RT_IFNAME, .off = _OUT(rt_ifname), .cb = snl_attr_store_ifname }, 1944 { .type = PF_ST_SRC_NODE_FLAGS, .off = _OUT(src_node_flags), .cb = snl_attr_get_uint8 }, 1945 { .type = PF_ST_RT_AF, .off = _OUT(rt_af), .cb = snl_attr_get_uint8 }, 1946 }; 1947 #undef _IN 1948 #undef _OUT 1949 SNL_DECLARE_PARSER(state_parser, struct genlmsghdr, snl_f_p_empty, ap_state); 1950 1951 static const struct snl_hdr_parser *all_parsers[] = { 1952 &state_parser, &skey_parser, &speer_parser, 1953 &creator_parser, &getrules_parser 1954 }; 1955 1956 static int 1957 pfctl_get_states_nl(struct pfctl_state_filter *filter, struct snl_state *ss, pfctl_get_state_fn f, void *arg) 1958 { 1959 SNL_VERIFY_PARSERS(all_parsers); 1960 int family_id = snl_get_genl_family(ss, PFNL_FAMILY_NAME); 1961 int ret; 1962 1963 struct nlmsghdr *hdr; 1964 struct snl_writer nw; 1965 1966 if (family_id == 0) 1967 return (ENOTSUP); 1968 1969 snl_init_writer(ss, &nw); 1970 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GETSTATES); 1971 hdr->nlmsg_flags |= NLM_F_DUMP; 1972 snl_add_msg_attr_string(&nw, PF_ST_IFNAME, filter->ifname); 1973 snl_add_msg_attr_u16(&nw, PF_ST_PROTO, filter->proto); 1974 snl_add_msg_attr_u8(&nw, PF_ST_AF, filter->af); 1975 snl_add_msg_attr_ip6(&nw, PF_ST_FILTER_ADDR, &filter->addr.v6); 1976 snl_add_msg_attr_ip6(&nw, PF_ST_FILTER_MASK, &filter->mask.v6); 1977 1978 hdr = snl_finalize_msg(&nw); 1979 if (hdr == NULL) 1980 return (ENOMEM); 1981 1982 uint32_t seq_id = hdr->nlmsg_seq; 1983 1984 snl_send_message(ss, hdr); 1985 1986 struct snl_errmsg_data e = {}; 1987 while ((hdr = snl_read_reply_multi(ss, seq_id, &e)) != NULL) { 1988 struct pfctl_state s; 1989 bzero(&s, sizeof(s)); 1990 if (!snl_parse_nlmsg(ss, hdr, &state_parser, &s)) 1991 continue; 1992 1993 ret = f(&s, arg); 1994 if (ret != 0) 1995 return (ret); 1996 } 1997 1998 return (0); 1999 } 2000 2001 int 2002 pfctl_get_states_iter(pfctl_get_state_fn f, void *arg) 2003 { 2004 struct pfctl_state_filter filter = {}; 2005 return (pfctl_get_filtered_states_iter(&filter, f, arg)); 2006 } 2007 2008 int 2009 pfctl_get_filtered_states_iter(struct pfctl_state_filter *filter, pfctl_get_state_fn f, void *arg) 2010 { 2011 struct snl_state ss = {}; 2012 int error; 2013 2014 snl_init(&ss, NETLINK_GENERIC); 2015 error = pfctl_get_states_nl(filter, &ss, f, arg); 2016 snl_free(&ss); 2017 2018 return (error); 2019 } 2020 2021 static int 2022 pfctl_append_states(struct pfctl_state *s, void *arg) 2023 { 2024 struct pfctl_state *new; 2025 struct pfctl_states *states = (struct pfctl_states *)arg; 2026 2027 new = malloc(sizeof(*s)); 2028 if (new == NULL) 2029 return (ENOMEM); 2030 2031 memcpy(new, s, sizeof(*s)); 2032 2033 TAILQ_INSERT_TAIL(&states->states, new, entry); 2034 2035 return (0); 2036 } 2037 2038 int 2039 pfctl_get_states(int dev __unused, struct pfctl_states *states) 2040 { 2041 int ret; 2042 2043 bzero(states, sizeof(*states)); 2044 TAILQ_INIT(&states->states); 2045 2046 ret = pfctl_get_states_iter(pfctl_append_states, states); 2047 if (ret != 0) { 2048 pfctl_free_states(states); 2049 return (ret); 2050 } 2051 2052 return (0); 2053 } 2054 2055 void 2056 pfctl_free_states(struct pfctl_states *states) 2057 { 2058 struct pfctl_state *s, *tmp; 2059 2060 TAILQ_FOREACH_SAFE(s, &states->states, entry, tmp) { 2061 free(s); 2062 } 2063 2064 bzero(states, sizeof(*states)); 2065 } 2066 2067 struct pfctl_nl_clear_states { 2068 uint32_t killed; 2069 }; 2070 #define _OUT(_field) offsetof(struct pfctl_nl_clear_states, _field) 2071 static struct snl_attr_parser ap_clear_states[] = { 2072 { .type = PF_CS_KILLED, .off = _OUT(killed), .cb = snl_attr_get_uint32 }, 2073 }; 2074 #undef _OUT 2075 SNL_DECLARE_PARSER(clear_states_parser, struct genlmsghdr, snl_f_p_empty, ap_clear_states); 2076 2077 static int 2078 _pfctl_clear_states_h(struct pfctl_handle *h, const struct pfctl_kill *kill, 2079 unsigned int *killed, int cmd) 2080 { 2081 struct snl_writer nw; 2082 struct snl_errmsg_data e = {}; 2083 struct pfctl_nl_clear_states attrs = {}; 2084 struct nlmsghdr *hdr; 2085 uint32_t seq_id; 2086 int family_id; 2087 2088 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME); 2089 if (family_id == 0) 2090 return (ENOTSUP); 2091 2092 snl_init_writer(&h->ss, &nw); 2093 hdr = snl_create_genl_msg_request(&nw, family_id, cmd); 2094 hdr->nlmsg_flags |= NLM_F_DUMP; 2095 2096 snl_add_msg_attr_u64(&nw, PF_CS_CMP_ID, kill->cmp.id); 2097 snl_add_msg_attr_u32(&nw, PF_CS_CMP_CREATORID, htonl(kill->cmp.creatorid)); 2098 snl_add_msg_attr_u8(&nw, PF_CS_CMP_DIR, kill->cmp.direction); 2099 snl_add_msg_attr_u8(&nw, PF_CS_AF, kill->af); 2100 snl_add_msg_attr_u8(&nw, PF_CS_PROTO, kill->proto); 2101 snl_add_msg_attr_rule_addr(&nw, PF_CS_SRC, &kill->src); 2102 snl_add_msg_attr_rule_addr(&nw, PF_CS_DST, &kill->dst); 2103 snl_add_msg_attr_rule_addr(&nw, PF_CS_RT_ADDR, &kill->rt_addr); 2104 snl_add_msg_attr_string(&nw, PF_CS_IFNAME, kill->ifname); 2105 snl_add_msg_attr_string(&nw, PF_CS_LABEL, kill->label); 2106 snl_add_msg_attr_bool(&nw, PF_CS_KILL_MATCH, kill->kill_match); 2107 snl_add_msg_attr_bool(&nw, PF_CS_NAT, kill->nat); 2108 2109 if ((hdr = snl_finalize_msg(&nw)) == NULL) 2110 return (ENXIO); 2111 2112 seq_id = hdr->nlmsg_seq; 2113 2114 if (! snl_send_message(&h->ss, hdr)) 2115 return (ENXIO); 2116 2117 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) { 2118 if (! snl_parse_nlmsg(&h->ss, hdr, &clear_states_parser, &attrs)) 2119 continue; 2120 } 2121 2122 if (killed) 2123 *killed = attrs.killed; 2124 2125 return (e.error); 2126 } 2127 2128 int 2129 pfctl_clear_states_h(struct pfctl_handle *h, const struct pfctl_kill *kill, 2130 unsigned int *killed) 2131 { 2132 return(_pfctl_clear_states_h(h, kill, killed, PFNL_CMD_CLRSTATES)); 2133 } 2134 2135 int 2136 pfctl_kill_states_h(struct pfctl_handle *h, const struct pfctl_kill *kill, 2137 unsigned int *killed) 2138 { 2139 return(_pfctl_clear_states_h(h, kill, killed, PFNL_CMD_KILLSTATES)); 2140 } 2141 2142 static int 2143 _pfctl_clear_states(int dev __unused, const struct pfctl_kill *kill, 2144 unsigned int *killed, uint64_t cmd) 2145 { 2146 struct pfctl_handle *h; 2147 int ret; 2148 2149 h = pfctl_open(PF_DEVICE); 2150 if (h == NULL) 2151 return (ENODEV); 2152 2153 ret = _pfctl_clear_states_h(h, kill, killed, cmd); 2154 pfctl_close(h); 2155 2156 return (ret); 2157 } 2158 2159 int 2160 pfctl_clear_states(int dev __unused, const struct pfctl_kill *kill, 2161 unsigned int *killed) 2162 { 2163 return (_pfctl_clear_states(dev, kill, killed, PFNL_CMD_CLRSTATES)); 2164 } 2165 2166 int 2167 pfctl_kill_states(int dev __unused, const struct pfctl_kill *kill, unsigned int *killed) 2168 { 2169 return (_pfctl_clear_states(dev, kill, killed, PFNL_CMD_KILLSTATES)); 2170 } 2171 2172 int 2173 pfctl_clear_rules(int dev, const char *anchorname) 2174 { 2175 struct pfioc_trans trans; 2176 struct pfioc_trans_e transe[2]; 2177 int ret; 2178 2179 bzero(&trans, sizeof(trans)); 2180 bzero(&transe, sizeof(transe)); 2181 2182 transe[0].rs_num = PF_RULESET_SCRUB; 2183 if (strlcpy(transe[0].anchor, anchorname, sizeof(transe[0].anchor)) 2184 >= sizeof(transe[0].anchor)) 2185 return (E2BIG); 2186 2187 transe[1].rs_num = PF_RULESET_FILTER; 2188 if (strlcpy(transe[1].anchor, anchorname, sizeof(transe[1].anchor)) 2189 >= sizeof(transe[1].anchor)) 2190 return (E2BIG); 2191 2192 trans.size = 2; 2193 trans.esize = sizeof(transe[0]); 2194 trans.array = transe; 2195 2196 ret = ioctl(dev, DIOCXBEGIN, &trans); 2197 if (ret != 0) 2198 return (errno); 2199 ret = ioctl(dev, DIOCXCOMMIT, &trans); 2200 if (ret != 0) 2201 return (errno); 2202 2203 return (0); 2204 } 2205 2206 int 2207 pfctl_clear_nat(int dev, const char *anchorname) 2208 { 2209 struct pfioc_trans trans; 2210 struct pfioc_trans_e transe[3]; 2211 int ret; 2212 2213 bzero(&trans, sizeof(trans)); 2214 bzero(&transe, sizeof(transe)); 2215 2216 transe[0].rs_num = PF_RULESET_NAT; 2217 if (strlcpy(transe[0].anchor, anchorname, sizeof(transe[0].anchor)) 2218 >= sizeof(transe[0].anchor)) 2219 return (E2BIG); 2220 2221 transe[1].rs_num = PF_RULESET_BINAT; 2222 if (strlcpy(transe[1].anchor, anchorname, sizeof(transe[1].anchor)) 2223 >= sizeof(transe[0].anchor)) 2224 return (E2BIG); 2225 2226 transe[2].rs_num = PF_RULESET_RDR; 2227 if (strlcpy(transe[2].anchor, anchorname, sizeof(transe[2].anchor)) 2228 >= sizeof(transe[2].anchor)) 2229 return (E2BIG); 2230 2231 trans.size = 3; 2232 trans.esize = sizeof(transe[0]); 2233 trans.array = transe; 2234 2235 ret = ioctl(dev, DIOCXBEGIN, &trans); 2236 if (ret != 0) 2237 return (errno); 2238 ret = ioctl(dev, DIOCXCOMMIT, &trans); 2239 if (ret != 0) 2240 return (errno); 2241 2242 return (0); 2243 } 2244 2245 int 2246 pfctl_clear_eth_rules(int dev, const char *anchorname) 2247 { 2248 struct pfioc_trans trans; 2249 struct pfioc_trans_e transe; 2250 int ret; 2251 2252 bzero(&trans, sizeof(trans)); 2253 bzero(&transe, sizeof(transe)); 2254 2255 transe.rs_num = PF_RULESET_ETH; 2256 if (strlcpy(transe.anchor, anchorname, sizeof(transe.anchor)) 2257 >= sizeof(transe.anchor)) 2258 return (E2BIG); 2259 2260 trans.size = 1; 2261 trans.esize = sizeof(transe); 2262 trans.array = &transe; 2263 2264 ret = ioctl(dev, DIOCXBEGIN, &trans); 2265 if (ret != 0) 2266 return (errno); 2267 ret = ioctl(dev, DIOCXCOMMIT, &trans); 2268 if (ret != 0) 2269 return (errno); 2270 2271 return (0); 2272 } 2273 2274 static int 2275 _pfctl_get_limit(int dev, const int index, uint *limit) 2276 { 2277 struct pfioc_limit pl; 2278 2279 bzero(&pl, sizeof(pl)); 2280 pl.index = index; 2281 2282 if (ioctl(dev, DIOCGETLIMIT, &pl) == -1) 2283 return (errno); 2284 2285 *limit = pl.limit; 2286 2287 return (0); 2288 } 2289 2290 int 2291 pfctl_set_syncookies(int dev, const struct pfctl_syncookies *s) 2292 { 2293 struct pfioc_nv nv; 2294 nvlist_t *nvl; 2295 int ret; 2296 uint state_limit; 2297 uint64_t lim, hi, lo; 2298 2299 ret = _pfctl_get_limit(dev, PF_LIMIT_STATES, &state_limit); 2300 if (ret != 0) 2301 return (ret); 2302 2303 if (state_limit == 0) 2304 state_limit = INT_MAX; 2305 2306 lim = state_limit; 2307 hi = lim * s->highwater / 100; 2308 lo = lim * s->lowwater / 100; 2309 2310 if (lo == hi) 2311 hi++; 2312 2313 nvl = nvlist_create(0); 2314 2315 nvlist_add_bool(nvl, "enabled", s->mode != PFCTL_SYNCOOKIES_NEVER); 2316 nvlist_add_bool(nvl, "adaptive", s->mode == PFCTL_SYNCOOKIES_ADAPTIVE); 2317 nvlist_add_number(nvl, "highwater", hi); 2318 nvlist_add_number(nvl, "lowwater", lo); 2319 2320 nv.data = nvlist_pack(nvl, &nv.len); 2321 nv.size = nv.len; 2322 nvlist_destroy(nvl); 2323 nvl = NULL; 2324 2325 ret = ioctl(dev, DIOCSETSYNCOOKIES, &nv); 2326 2327 free(nv.data); 2328 if (ret != 0) 2329 return (errno); 2330 2331 return (0); 2332 } 2333 2334 int 2335 pfctl_get_syncookies(int dev, struct pfctl_syncookies *s) 2336 { 2337 nvlist_t *nvl; 2338 int ret; 2339 uint state_limit; 2340 bool enabled, adaptive; 2341 2342 ret = _pfctl_get_limit(dev, PF_LIMIT_STATES, &state_limit); 2343 if (ret != 0) 2344 return (ret); 2345 2346 if (state_limit == 0) 2347 state_limit = INT_MAX; 2348 2349 bzero(s, sizeof(*s)); 2350 2351 nvl = nvlist_create(0); 2352 2353 if ((ret = pfctl_do_ioctl(dev, DIOCGETSYNCOOKIES, 256, &nvl)) != 0) { 2354 ret = errno; 2355 goto out; 2356 } 2357 2358 enabled = nvlist_get_bool(nvl, "enabled"); 2359 adaptive = nvlist_get_bool(nvl, "adaptive"); 2360 2361 if (enabled) { 2362 if (adaptive) 2363 s->mode = PFCTL_SYNCOOKIES_ADAPTIVE; 2364 else 2365 s->mode = PFCTL_SYNCOOKIES_ALWAYS; 2366 } else { 2367 s->mode = PFCTL_SYNCOOKIES_NEVER; 2368 } 2369 2370 s->highwater = nvlist_get_number(nvl, "highwater") * 100 / state_limit; 2371 s->lowwater = nvlist_get_number(nvl, "lowwater") * 100 / state_limit; 2372 s->halfopen_states = nvlist_get_number(nvl, "halfopen_states"); 2373 2374 out: 2375 nvlist_destroy(nvl); 2376 return (ret); 2377 } 2378 2379 int 2380 pfctl_table_add_addrs(int dev, struct pfr_table *tbl, struct pfr_addr 2381 *addr, int size, int *nadd, int flags) 2382 { 2383 struct pfioc_table io; 2384 2385 if (tbl == NULL || size < 0 || (size && addr == NULL)) { 2386 return (EINVAL); 2387 } 2388 bzero(&io, sizeof io); 2389 io.pfrio_flags = flags; 2390 io.pfrio_table = *tbl; 2391 io.pfrio_buffer = addr; 2392 io.pfrio_esize = sizeof(*addr); 2393 io.pfrio_size = size; 2394 2395 if (ioctl(dev, DIOCRADDADDRS, &io)) 2396 return (errno); 2397 if (nadd != NULL) 2398 *nadd = io.pfrio_nadd; 2399 return (0); 2400 } 2401 2402 static void 2403 snl_add_msg_attr_table(struct snl_writer *nw, uint32_t type, 2404 const struct pfr_table *tbl) 2405 { 2406 int off; 2407 2408 off = snl_add_msg_attr_nested(nw, type); 2409 2410 snl_add_msg_attr_string(nw, PF_T_ANCHOR, tbl->pfrt_anchor); 2411 snl_add_msg_attr_string(nw, PF_T_NAME, tbl->pfrt_name); 2412 snl_add_msg_attr_u32(nw, PF_T_TABLE_FLAGS, tbl->pfrt_flags); 2413 2414 snl_end_attr_nested(nw, off); 2415 } 2416 2417 static void 2418 snl_add_msg_attr_pfr_addr(struct snl_writer *nw, uint32_t type, 2419 const struct pfr_addr *addr) 2420 { 2421 int off; 2422 2423 off = snl_add_msg_attr_nested(nw, type); 2424 2425 snl_add_msg_attr_u8(nw, PFR_A_AF, addr->pfra_af); 2426 snl_add_msg_attr_u8(nw, PFR_A_NET, addr->pfra_net); 2427 snl_add_msg_attr_bool(nw, PFR_A_NOT, addr->pfra_not); 2428 snl_add_msg_attr_ip6(nw, PFR_A_ADDR, &addr->pfra_ip6addr); 2429 2430 snl_end_attr_nested(nw, off); 2431 } 2432 2433 static struct snl_attr_parser ap_table_add_addr[] = { 2434 { .type = PF_TA_NBR_ADDED, .off = 0, .cb = snl_attr_get_uint32 }, 2435 }; 2436 SNL_DECLARE_PARSER(table_add_addr_parser, struct genlmsghdr, snl_f_p_empty, ap_table_add_addr); 2437 2438 static int 2439 _pfctl_table_add_addrs_h(struct pfctl_handle *h, struct pfr_table *tbl, struct pfr_addr 2440 *addrs, int size, int *nadd, int flags) 2441 { 2442 struct snl_writer nw; 2443 struct snl_errmsg_data e = {}; 2444 struct nlmsghdr *hdr; 2445 uint32_t seq_id; 2446 uint32_t added; 2447 int family_id; 2448 2449 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME); 2450 if (family_id == 0) 2451 return (ENOTSUP); 2452 2453 snl_init_writer(&h->ss, &nw); 2454 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_TABLE_ADD_ADDR); 2455 2456 snl_add_msg_attr_table(&nw, PF_TA_TABLE, tbl); 2457 snl_add_msg_attr_u32(&nw, PF_TA_FLAGS, flags); 2458 for (int i = 0; i < size; i++) 2459 snl_add_msg_attr_pfr_addr(&nw, PF_TA_ADDR, &addrs[i]); 2460 2461 if ((hdr = snl_finalize_msg(&nw)) == NULL) 2462 return (ENXIO); 2463 seq_id = hdr->nlmsg_seq; 2464 2465 if (! snl_send_message(&h->ss, hdr)) 2466 return (ENXIO); 2467 2468 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) { 2469 if (! snl_parse_nlmsg(&h->ss, hdr, &table_add_addr_parser, &added)) 2470 continue; 2471 } 2472 2473 if (nadd) 2474 *nadd = added; 2475 2476 return (e.error); 2477 } 2478 2479 int 2480 pfctl_table_add_addrs_h(struct pfctl_handle *h, struct pfr_table *tbl, struct pfr_addr 2481 *addr, int size, int *nadd, int flags) 2482 { 2483 int ret; 2484 int off = 0; 2485 int partial_added; 2486 int chunk_size; 2487 2488 do { 2489 chunk_size = MIN(size - off, 256); 2490 ret = _pfctl_table_add_addrs_h(h, tbl, &addr[off], chunk_size, &partial_added, flags); 2491 if (ret != 0) 2492 break; 2493 if (nadd) 2494 *nadd += partial_added; 2495 off += chunk_size; 2496 } while (off < size); 2497 2498 return (ret); 2499 } 2500 2501 static struct snl_attr_parser ap_table_del_addr[] = { 2502 { .type = PF_TA_NBR_DELETED, .off = 0, .cb = snl_attr_get_uint32 }, 2503 }; 2504 SNL_DECLARE_PARSER(table_del_addr_parser, struct genlmsghdr, snl_f_p_empty, ap_table_del_addr); 2505 static int 2506 _pfctl_table_del_addrs_h(struct pfctl_handle *h, struct pfr_table *tbl, struct pfr_addr 2507 *addrs, int size, int *ndel, int flags) 2508 { 2509 struct snl_writer nw; 2510 struct snl_errmsg_data e = {}; 2511 struct nlmsghdr *hdr; 2512 uint32_t seq_id; 2513 uint32_t deleted; 2514 int family_id; 2515 2516 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME); 2517 if (family_id == 0) 2518 return (ENOTSUP); 2519 2520 snl_init_writer(&h->ss, &nw); 2521 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_TABLE_DEL_ADDR); 2522 2523 snl_add_msg_attr_table(&nw, PF_TA_TABLE, tbl); 2524 snl_add_msg_attr_u32(&nw, PF_TA_FLAGS, flags); 2525 for (int i = 0; i < size; i++) 2526 snl_add_msg_attr_pfr_addr(&nw, PF_TA_ADDR, &addrs[i]); 2527 2528 if ((hdr = snl_finalize_msg(&nw)) == NULL) 2529 return (ENXIO); 2530 seq_id = hdr->nlmsg_seq; 2531 2532 if (! snl_send_message(&h->ss, hdr)) 2533 return (ENXIO); 2534 2535 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) { 2536 if (! snl_parse_nlmsg(&h->ss, hdr, &table_del_addr_parser, &deleted)) 2537 continue; 2538 } 2539 2540 if (ndel) 2541 *ndel = deleted; 2542 2543 return (e.error); 2544 } 2545 2546 int 2547 pfctl_table_del_addrs(int dev, struct pfr_table *tbl, struct pfr_addr 2548 *addr, int size, int *ndel, int flags) 2549 { 2550 struct pfioc_table io; 2551 2552 if (tbl == NULL || size < 0 || (size && addr == NULL)) { 2553 return (EINVAL); 2554 } 2555 bzero(&io, sizeof io); 2556 io.pfrio_flags = flags; 2557 io.pfrio_table = *tbl; 2558 io.pfrio_buffer = addr; 2559 io.pfrio_esize = sizeof(*addr); 2560 io.pfrio_size = size; 2561 2562 if (ioctl(dev, DIOCRDELADDRS, &io)) 2563 return (errno); 2564 if (ndel != NULL) 2565 *ndel = io.pfrio_ndel; 2566 return (0); 2567 } 2568 2569 int 2570 pfctl_table_del_addrs_h(struct pfctl_handle *h, struct pfr_table *tbl, struct pfr_addr 2571 *addr, int size, int *ndel, int flags) 2572 { 2573 int ret; 2574 int off = 0; 2575 int partial_deleted; 2576 int chunk_size; 2577 2578 do { 2579 chunk_size = MIN(size - off, 256); 2580 ret = _pfctl_table_del_addrs_h(h, tbl, &addr[off], chunk_size, 2581 &partial_deleted, flags); 2582 if (ret != 0) 2583 break; 2584 if (ndel) 2585 *ndel += partial_deleted; 2586 off += chunk_size; 2587 } while (off < size); 2588 2589 return (ret); 2590 } 2591 2592 int 2593 pfctl_table_set_addrs(int dev, struct pfr_table *tbl, struct pfr_addr 2594 *addr, int size, int *size2, int *nadd, int *ndel, int *nchange, int flags) 2595 { 2596 struct pfioc_table io; 2597 2598 if (tbl == NULL || size < 0 || (size && addr == NULL)) { 2599 return (EINVAL); 2600 } 2601 bzero(&io, sizeof io); 2602 io.pfrio_flags = flags; 2603 io.pfrio_table = *tbl; 2604 io.pfrio_buffer = addr; 2605 io.pfrio_esize = sizeof(*addr); 2606 io.pfrio_size = size; 2607 io.pfrio_size2 = (size2 != NULL) ? *size2 : 0; 2608 if (ioctl(dev, DIOCRSETADDRS, &io)) 2609 return (errno); 2610 if (nadd != NULL) 2611 *nadd = io.pfrio_nadd; 2612 if (ndel != NULL) 2613 *ndel = io.pfrio_ndel; 2614 if (nchange != NULL) 2615 *nchange = io.pfrio_nchange; 2616 if (size2 != NULL) 2617 *size2 = io.pfrio_size2; 2618 return (0); 2619 } 2620 2621 int pfctl_table_get_addrs(int dev, struct pfr_table *tbl, struct pfr_addr *addr, 2622 int *size, int flags) 2623 { 2624 struct pfioc_table io; 2625 2626 if (tbl == NULL || size == NULL || *size < 0 || 2627 (*size && addr == NULL)) { 2628 return (EINVAL); 2629 } 2630 bzero(&io, sizeof io); 2631 io.pfrio_flags = flags; 2632 io.pfrio_table = *tbl; 2633 io.pfrio_buffer = addr; 2634 io.pfrio_esize = sizeof(*addr); 2635 io.pfrio_size = *size; 2636 if (ioctl(dev, DIOCRGETADDRS, &io)) 2637 return (errno); 2638 *size = io.pfrio_size; 2639 return (0); 2640 } 2641 2642 int 2643 pfctl_set_statusif(struct pfctl_handle *h, const char *ifname) 2644 { 2645 struct snl_writer nw; 2646 struct snl_errmsg_data e = {}; 2647 struct nlmsghdr *hdr; 2648 uint32_t seq_id; 2649 int family_id; 2650 2651 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME); 2652 if (family_id == 0) 2653 return (ENOTSUP); 2654 2655 snl_init_writer(&h->ss, &nw); 2656 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_SET_STATUSIF); 2657 2658 snl_add_msg_attr_string(&nw, PF_SS_IFNAME, ifname); 2659 2660 if ((hdr = snl_finalize_msg(&nw)) == NULL) 2661 return (ENXIO); 2662 2663 seq_id = hdr->nlmsg_seq; 2664 2665 if (! snl_send_message(&h->ss, hdr)) 2666 return (ENXIO); 2667 2668 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) { 2669 } 2670 2671 return (e.error); 2672 } 2673 2674 #define _IN(_field) offsetof(struct genlmsghdr, _field) 2675 #define _OUT(_field) offsetof(struct pfctl_natlook, _field) 2676 static struct snl_attr_parser ap_natlook[] = { 2677 { .type = PF_NL_SRC_ADDR, .off = _OUT(saddr), .cb = snl_attr_get_in6_addr }, 2678 { .type = PF_NL_DST_ADDR, .off = _OUT(daddr), .cb = snl_attr_get_in6_addr }, 2679 { .type = PF_NL_SRC_PORT, .off = _OUT(sport), .cb = snl_attr_get_uint16 }, 2680 { .type = PF_NL_DST_PORT, .off = _OUT(dport), .cb = snl_attr_get_uint16 }, 2681 }; 2682 #undef _IN 2683 #undef _OUT 2684 SNL_DECLARE_PARSER(natlook_parser, struct genlmsghdr, snl_f_p_empty, ap_natlook); 2685 2686 int 2687 pfctl_natlook(struct pfctl_handle *h, const struct pfctl_natlook_key *k, 2688 struct pfctl_natlook *r) 2689 { 2690 struct snl_writer nw; 2691 struct snl_errmsg_data e = {}; 2692 struct nlmsghdr *hdr; 2693 uint32_t seq_id; 2694 int family_id; 2695 2696 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME); 2697 if (family_id == 0) 2698 return (ENOTSUP); 2699 2700 snl_init_writer(&h->ss, &nw); 2701 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_NATLOOK); 2702 hdr->nlmsg_flags |= NLM_F_DUMP; 2703 2704 snl_add_msg_attr_u8(&nw, PF_NL_AF, k->af); 2705 snl_add_msg_attr_u8(&nw, PF_NL_DIRECTION, k->direction); 2706 snl_add_msg_attr_u8(&nw, PF_NL_PROTO, k->proto); 2707 snl_add_msg_attr_ip6(&nw, PF_NL_SRC_ADDR, &k->saddr.v6); 2708 snl_add_msg_attr_ip6(&nw, PF_NL_DST_ADDR, &k->daddr.v6); 2709 snl_add_msg_attr_u16(&nw, PF_NL_SRC_PORT, k->sport); 2710 snl_add_msg_attr_u16(&nw, PF_NL_DST_PORT, k->dport); 2711 2712 if ((hdr = snl_finalize_msg(&nw)) == NULL) 2713 return (ENXIO); 2714 2715 seq_id = hdr->nlmsg_seq; 2716 2717 if (! snl_send_message(&h->ss, hdr)) 2718 return (ENXIO); 2719 2720 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) { 2721 if (! snl_parse_nlmsg(&h->ss, hdr, &natlook_parser, r)) 2722 continue; 2723 } 2724 2725 return (e.error); 2726 } 2727 2728 int 2729 pfctl_set_debug(struct pfctl_handle *h, uint32_t level) 2730 { 2731 struct snl_writer nw; 2732 struct snl_errmsg_data e = {}; 2733 struct nlmsghdr *hdr; 2734 uint32_t seq_id; 2735 int family_id; 2736 2737 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME); 2738 if (family_id == 0) 2739 return (ENOTSUP); 2740 2741 snl_init_writer(&h->ss, &nw); 2742 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_SET_DEBUG); 2743 2744 snl_add_msg_attr_u32(&nw, PF_SD_LEVEL, level); 2745 2746 if ((hdr = snl_finalize_msg(&nw)) == NULL) 2747 return (ENXIO); 2748 2749 seq_id = hdr->nlmsg_seq; 2750 2751 if (! snl_send_message(&h->ss, hdr)) 2752 return (ENXIO); 2753 2754 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) { 2755 } 2756 2757 return (e.error); 2758 } 2759 2760 int 2761 pfctl_set_timeout(struct pfctl_handle *h, uint32_t timeout, uint32_t seconds) 2762 { 2763 struct snl_writer nw; 2764 struct snl_errmsg_data e = {}; 2765 struct nlmsghdr *hdr; 2766 uint32_t seq_id; 2767 int family_id; 2768 2769 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME); 2770 if (family_id == 0) 2771 return (ENOTSUP); 2772 2773 snl_init_writer(&h->ss, &nw); 2774 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_SET_TIMEOUT); 2775 2776 snl_add_msg_attr_u32(&nw, PF_TO_TIMEOUT, timeout); 2777 snl_add_msg_attr_u32(&nw, PF_TO_SECONDS, seconds); 2778 2779 if ((hdr = snl_finalize_msg(&nw)) == NULL) 2780 return (ENXIO); 2781 2782 seq_id = hdr->nlmsg_seq; 2783 2784 if (! snl_send_message(&h->ss, hdr)) 2785 return (ENXIO); 2786 2787 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) { 2788 } 2789 2790 return (e.error); 2791 } 2792 2793 struct pfctl_nl_timeout { 2794 uint32_t seconds; 2795 }; 2796 #define _OUT(_field) offsetof(struct pfctl_nl_timeout, _field) 2797 static struct snl_attr_parser ap_get_timeout[] = { 2798 { .type = PF_TO_SECONDS, .off = _OUT(seconds), .cb = snl_attr_get_uint32 }, 2799 }; 2800 #undef _OUT 2801 SNL_DECLARE_PARSER(get_timeout_parser, struct genlmsghdr, snl_f_p_empty, ap_get_timeout); 2802 2803 int 2804 pfctl_get_timeout(struct pfctl_handle *h, uint32_t timeout, uint32_t *seconds) 2805 { 2806 struct snl_writer nw; 2807 struct pfctl_nl_timeout to = {}; 2808 struct snl_errmsg_data e = {}; 2809 struct nlmsghdr *hdr; 2810 uint32_t seq_id; 2811 int family_id; 2812 2813 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME); 2814 if (family_id == 0) 2815 return (ENOTSUP); 2816 2817 snl_init_writer(&h->ss, &nw); 2818 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GET_TIMEOUT); 2819 hdr->nlmsg_flags |= NLM_F_DUMP; 2820 2821 snl_add_msg_attr_u32(&nw, PF_TO_TIMEOUT, timeout); 2822 2823 if ((hdr = snl_finalize_msg(&nw)) == NULL) 2824 return (ENXIO); 2825 2826 seq_id = hdr->nlmsg_seq; 2827 2828 if (! snl_send_message(&h->ss, hdr)) 2829 return (ENXIO); 2830 2831 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) { 2832 if (! snl_parse_nlmsg(&h->ss, hdr, &get_timeout_parser, &to)) 2833 continue; 2834 } 2835 2836 if (seconds != NULL) 2837 *seconds = to.seconds; 2838 2839 return (e.error); 2840 } 2841 2842 int 2843 pfctl_set_limit(struct pfctl_handle *h, const int index, const uint limit) 2844 { 2845 struct snl_writer nw; 2846 struct snl_errmsg_data e = {}; 2847 struct nlmsghdr *hdr; 2848 uint32_t seq_id; 2849 int family_id; 2850 2851 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME); 2852 if (family_id == 0) 2853 return (ENOTSUP); 2854 2855 snl_init_writer(&h->ss, &nw); 2856 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_SET_LIMIT); 2857 2858 snl_add_msg_attr_u32(&nw, PF_LI_INDEX, index); 2859 snl_add_msg_attr_u32(&nw, PF_LI_LIMIT, limit); 2860 2861 if ((hdr = snl_finalize_msg(&nw)) == NULL) 2862 return (ENXIO); 2863 2864 seq_id = hdr->nlmsg_seq; 2865 2866 if (! snl_send_message(&h->ss, hdr)) 2867 return (ENXIO); 2868 2869 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) { 2870 } 2871 2872 return (e.error); 2873 } 2874 2875 struct pfctl_nl_limit { 2876 unsigned int limit; 2877 }; 2878 #define _OUT(_field) offsetof(struct pfctl_nl_limit, _field) 2879 static struct snl_attr_parser ap_get_limit[] = { 2880 { .type = PF_LI_LIMIT, .off = _OUT(limit), .cb = snl_attr_get_uint32 }, 2881 }; 2882 #undef _OUT 2883 SNL_DECLARE_PARSER(get_limit_parser, struct genlmsghdr, snl_f_p_empty, ap_get_limit); 2884 2885 int 2886 pfctl_get_limit(struct pfctl_handle *h, const int index, uint *limit) 2887 { 2888 struct snl_writer nw; 2889 struct pfctl_nl_limit li = {}; 2890 struct snl_errmsg_data e = {}; 2891 struct nlmsghdr *hdr; 2892 uint32_t seq_id; 2893 int family_id; 2894 2895 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME); 2896 if (family_id == 0) 2897 return (ENOTSUP); 2898 2899 snl_init_writer(&h->ss, &nw); 2900 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GET_LIMIT); 2901 hdr->nlmsg_flags |= NLM_F_DUMP; 2902 2903 snl_add_msg_attr_u32(&nw, PF_LI_INDEX, index); 2904 2905 if ((hdr = snl_finalize_msg(&nw)) == NULL) 2906 return (ENXIO); 2907 2908 seq_id = hdr->nlmsg_seq; 2909 2910 if (! snl_send_message(&h->ss, hdr)) 2911 return (ENXIO); 2912 2913 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) { 2914 if (! snl_parse_nlmsg(&h->ss, hdr, &get_limit_parser, &li)) 2915 continue; 2916 } 2917 2918 if (limit != NULL) 2919 *limit = li.limit; 2920 2921 return (e.error); 2922 } 2923 2924 struct pfctl_nl_begin_addrs { 2925 uint32_t ticket; 2926 }; 2927 #define _OUT(_field) offsetof(struct pfctl_nl_begin_addrs, _field) 2928 static struct snl_attr_parser ap_begin_addrs[] = { 2929 { .type = PF_BA_TICKET, .off = _OUT(ticket), .cb = snl_attr_get_uint32 }, 2930 }; 2931 #undef _OUT 2932 SNL_DECLARE_PARSER(begin_addrs_parser, struct genlmsghdr, snl_f_p_empty, ap_begin_addrs); 2933 2934 int 2935 pfctl_begin_addrs(struct pfctl_handle *h, uint32_t *ticket) 2936 { 2937 struct snl_writer nw; 2938 struct pfctl_nl_begin_addrs attrs = {}; 2939 struct snl_errmsg_data e = {}; 2940 struct nlmsghdr *hdr; 2941 uint32_t seq_id; 2942 int family_id; 2943 2944 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME); 2945 if (family_id == 0) 2946 return (ENOTSUP); 2947 2948 snl_init_writer(&h->ss, &nw); 2949 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_BEGIN_ADDRS); 2950 hdr->nlmsg_flags |= NLM_F_DUMP; 2951 2952 if ((hdr = snl_finalize_msg(&nw)) == NULL) 2953 return (ENXIO); 2954 2955 seq_id = hdr->nlmsg_seq; 2956 2957 if (! snl_send_message(&h->ss, hdr)) 2958 return (ENXIO); 2959 2960 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) { 2961 if (! snl_parse_nlmsg(&h->ss, hdr, &begin_addrs_parser, &attrs)) 2962 continue; 2963 } 2964 2965 if (ticket != NULL) 2966 *ticket = attrs.ticket; 2967 2968 return (e.error); 2969 } 2970 2971 int 2972 pfctl_add_addr(struct pfctl_handle *h, const struct pfioc_pooladdr *pa, int which) 2973 { 2974 struct snl_writer nw; 2975 struct snl_errmsg_data e = {}; 2976 struct nlmsghdr *hdr; 2977 uint32_t seq_id; 2978 int family_id; 2979 2980 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME); 2981 if (family_id == 0) 2982 return (ENOTSUP); 2983 2984 snl_init_writer(&h->ss, &nw); 2985 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_ADD_ADDR); 2986 2987 snl_add_msg_attr_u32(&nw, PF_AA_ACTION, pa->action); 2988 snl_add_msg_attr_u32(&nw, PF_AA_TICKET, pa->ticket); 2989 snl_add_msg_attr_u32(&nw, PF_AA_NR, pa->nr); 2990 snl_add_msg_attr_u32(&nw, PF_AA_R_NUM, pa->r_num); 2991 snl_add_msg_attr_u8(&nw, PF_AA_R_ACTION, pa->r_action); 2992 snl_add_msg_attr_u8(&nw, PF_AA_R_LAST, pa->r_last); 2993 snl_add_msg_attr_u8(&nw, PF_AA_AF, pa->af); 2994 snl_add_msg_attr_string(&nw, PF_AA_ANCHOR, pa->anchor); 2995 snl_add_msg_attr_pool_addr(&nw, PF_AA_ADDR, &pa->addr); 2996 snl_add_msg_attr_u32(&nw, PF_AA_WHICH, which); 2997 2998 if ((hdr = snl_finalize_msg(&nw)) == NULL) 2999 return (ENXIO); 3000 3001 seq_id = hdr->nlmsg_seq; 3002 3003 if (! snl_send_message(&h->ss, hdr)) 3004 return (ENXIO); 3005 3006 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) { 3007 } 3008 3009 return (e.error); 3010 } 3011 3012 static const struct snl_attr_parser ap_get_addrs[] = { 3013 { .type = PF_AA_NR, .off = 0, .cb = snl_attr_get_uint32 }, 3014 }; 3015 SNL_DECLARE_PARSER(get_addrs_parser, struct genlmsghdr, snl_f_p_empty, ap_get_addrs); 3016 3017 int 3018 pfctl_get_addrs(struct pfctl_handle *h, uint32_t ticket, uint32_t r_num, 3019 uint8_t r_action, const char *anchor, uint32_t *nr, int which) 3020 { 3021 struct snl_writer nw; 3022 struct snl_errmsg_data e = {}; 3023 struct nlmsghdr *hdr; 3024 uint32_t seq_id; 3025 int family_id; 3026 3027 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME); 3028 if (family_id == 0) 3029 return (ENOTSUP); 3030 3031 snl_init_writer(&h->ss, &nw); 3032 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GET_ADDRS); 3033 3034 snl_add_msg_attr_u32(&nw, PF_AA_TICKET, ticket); 3035 snl_add_msg_attr_u32(&nw, PF_AA_R_NUM, r_num); 3036 snl_add_msg_attr_u8(&nw, PF_AA_R_ACTION, r_action); 3037 snl_add_msg_attr_string(&nw, PF_AA_ANCHOR, anchor); 3038 snl_add_msg_attr_u32(&nw, PF_AA_WHICH, which); 3039 3040 if ((hdr = snl_finalize_msg(&nw)) == NULL) 3041 return (ENXIO); 3042 3043 seq_id = hdr->nlmsg_seq; 3044 3045 if (! snl_send_message(&h->ss, hdr)) 3046 return (ENXIO); 3047 3048 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) { 3049 if (! snl_parse_nlmsg(&h->ss, hdr, &get_addrs_parser, nr)) 3050 continue; 3051 } 3052 3053 return (e.error); 3054 } 3055 3056 #define _OUT(_field) offsetof(struct pf_pooladdr, _field) 3057 static const struct snl_attr_parser ap_pool_addr[] = { 3058 { .type = PF_PA_ADDR, .off = _OUT(addr), .arg = &addr_wrap_parser, .cb = snl_attr_get_nested }, 3059 { .type = PF_PA_IFNAME, .off = _OUT(ifname), .arg_u32 = IFNAMSIZ, .cb = snl_attr_copy_string }, 3060 }; 3061 SNL_DECLARE_ATTR_PARSER(pool_addr_parser, ap_pool_addr); 3062 #undef _OUT 3063 3064 #define _OUT(_field) offsetof(struct pfioc_pooladdr, _field) 3065 static const struct snl_attr_parser ap_get_addr[] = { 3066 { .type = PF_AA_ACTION, .off = _OUT(action), .cb = snl_attr_get_uint32 }, 3067 { .type = PF_AA_TICKET, .off = _OUT(ticket), .cb = snl_attr_get_uint32 }, 3068 { .type = PF_AA_NR, .off = _OUT(nr), .cb = snl_attr_get_uint32 }, 3069 { .type = PF_AA_R_NUM, .off = _OUT(r_num), .cb = snl_attr_get_uint32 }, 3070 { .type = PF_AA_R_ACTION, .off = _OUT(r_action), .cb = snl_attr_get_uint8 }, 3071 { .type = PF_AA_R_LAST, .off = _OUT(r_last), .cb = snl_attr_get_uint8 }, 3072 { .type = PF_AA_AF, .off = _OUT(af), .cb = snl_attr_get_uint8 }, 3073 { .type = PF_AA_ANCHOR, .off = _OUT(anchor), .arg_u32 = MAXPATHLEN, .cb = snl_attr_copy_string }, 3074 { .type = PF_AA_ADDR, .off = _OUT(addr), .arg = &pool_addr_parser, .cb = snl_attr_get_nested }, 3075 }; 3076 SNL_DECLARE_PARSER(get_addr_parser, struct genlmsghdr, snl_f_p_empty, ap_get_addr); 3077 #undef _OUT 3078 3079 int 3080 pfctl_get_addr(struct pfctl_handle *h, uint32_t ticket, uint32_t r_num, 3081 uint8_t r_action, const char *anchor, uint32_t nr, struct pfioc_pooladdr *pa, 3082 int which) 3083 { 3084 struct snl_writer nw; 3085 struct snl_errmsg_data e = {}; 3086 struct nlmsghdr *hdr; 3087 uint32_t seq_id; 3088 int family_id; 3089 3090 family_id =snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME); 3091 if (family_id == 0) 3092 return (ENOTSUP); 3093 3094 snl_init_writer(&h->ss, &nw); 3095 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GET_ADDR); 3096 3097 snl_add_msg_attr_u32(&nw, PF_AA_TICKET, ticket); 3098 snl_add_msg_attr_u32(&nw, PF_AA_R_NUM, r_num); 3099 snl_add_msg_attr_u8(&nw, PF_AA_R_ACTION, r_action); 3100 snl_add_msg_attr_string(&nw, PF_AA_ANCHOR, anchor); 3101 snl_add_msg_attr_u32(&nw, PF_AA_NR, nr); 3102 snl_add_msg_attr_u32(&nw, PF_AA_WHICH, which); 3103 3104 if ((hdr = snl_finalize_msg(&nw)) == NULL) 3105 return (ENXIO); 3106 3107 seq_id = hdr->nlmsg_seq; 3108 3109 if (! snl_send_message(&h->ss, hdr)) 3110 return (ENXIO); 3111 3112 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) { 3113 if (! snl_parse_nlmsg(&h->ss, hdr, &get_addr_parser, pa)) 3114 continue; 3115 } 3116 3117 return (e.error); 3118 } 3119 3120 #define _OUT(_field) offsetof(struct pfioc_ruleset, _field) 3121 static const struct snl_attr_parser ap_ruleset[] = { 3122 { .type = PF_RS_NR, .off = _OUT(nr), .cb = snl_attr_get_uint32 }, 3123 { .type = PF_RS_NAME, .off = _OUT(name), .arg = (void *)PF_ANCHOR_NAME_SIZE, .cb = snl_attr_copy_string }, 3124 }; 3125 SNL_DECLARE_PARSER(ruleset_parser, struct genlmsghdr, snl_f_p_empty, ap_ruleset); 3126 #undef _OUT 3127 3128 int 3129 pfctl_get_rulesets(struct pfctl_handle *h, const char *path, uint32_t *nr) 3130 { 3131 struct snl_writer nw; 3132 struct snl_errmsg_data e = {}; 3133 struct nlmsghdr *hdr; 3134 struct pfioc_ruleset rs = {}; 3135 uint32_t seq_id; 3136 int family_id; 3137 3138 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME); 3139 if (family_id == 0) 3140 return (ENOTSUP); 3141 3142 snl_init_writer(&h->ss, &nw); 3143 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GET_RULESETS); 3144 3145 snl_add_msg_attr_string(&nw, PF_RS_PATH, path); 3146 3147 if ((hdr = snl_finalize_msg(&nw)) == NULL) 3148 return (ENXIO); 3149 3150 seq_id = hdr->nlmsg_seq; 3151 3152 if (! snl_send_message(&h->ss, hdr)) 3153 return (ENXIO); 3154 3155 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) { 3156 if (! snl_parse_nlmsg(&h->ss, hdr, &ruleset_parser, &rs)) 3157 continue; 3158 } 3159 3160 *nr = rs.nr; 3161 3162 return (e.error); 3163 } 3164 3165 int 3166 pfctl_get_ruleset(struct pfctl_handle *h, const char *path, uint32_t nr, struct pfioc_ruleset *rs) 3167 { 3168 struct snl_writer nw; 3169 struct snl_errmsg_data e = {}; 3170 struct nlmsghdr *hdr; 3171 uint32_t seq_id; 3172 int family_id; 3173 3174 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME); 3175 if (family_id == 0) 3176 return (ENOTSUP); 3177 3178 snl_init_writer(&h->ss, &nw); 3179 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GET_RULESET); 3180 3181 snl_add_msg_attr_string(&nw, PF_RS_PATH, path); 3182 snl_add_msg_attr_u32(&nw, PF_RS_NR, nr); 3183 3184 if ((hdr = snl_finalize_msg(&nw)) == NULL) 3185 return (ENXIO); 3186 3187 seq_id = hdr->nlmsg_seq; 3188 3189 if (! snl_send_message(&h->ss, hdr)) 3190 return (ENXIO); 3191 3192 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) { 3193 if (! snl_parse_nlmsg(&h->ss, hdr, &ruleset_parser, rs)) 3194 continue; 3195 } 3196 3197 return (e.error); 3198 } 3199 3200 #define _OUT(_field) offsetof(struct pfctl_src_node, _field) 3201 static struct snl_attr_parser ap_srcnode[] = { 3202 { .type = PF_SN_ADDR, .off = _OUT(addr), .cb = snl_attr_get_in6_addr }, 3203 { .type = PF_SN_RADDR, .off = _OUT(raddr), .cb = snl_attr_get_in6_addr }, 3204 { .type = PF_SN_RULE_NR, .off = _OUT(rule), .cb = snl_attr_get_uint32 }, 3205 { .type = PF_SN_BYTES_IN, .off = _OUT(bytes[0]), .cb = snl_attr_get_uint64 }, 3206 { .type = PF_SN_BYTES_OUT, .off = _OUT(bytes[1]), .cb = snl_attr_get_uint64 }, 3207 { .type = PF_SN_PACKETS_IN, .off = _OUT(packets[0]), .cb = snl_attr_get_uint64 }, 3208 { .type = PF_SN_PACKETS_OUT, .off = _OUT(packets[1]), .cb = snl_attr_get_uint64 }, 3209 { .type = PF_SN_STATES, .off = _OUT(states), .cb = snl_attr_get_uint32 }, 3210 { .type = PF_SN_CONNECTIONS, .off = _OUT(conn), .cb = snl_attr_get_uint32 }, 3211 { .type = PF_SN_AF, .off = _OUT(af), .cb = snl_attr_get_uint8 }, 3212 { .type = PF_SN_RULE_TYPE, .off = _OUT(ruletype), .cb = snl_attr_get_uint8 }, 3213 { .type = PF_SN_CREATION, .off = _OUT(creation), .cb = snl_attr_get_uint64 }, 3214 { .type = PF_SN_EXPIRE, .off = _OUT(expire), .cb = snl_attr_get_uint64 }, 3215 { .type = PF_SN_CONNECTION_RATE, .off = _OUT(conn_rate), .arg = &pfctl_threshold_parser, .cb = snl_attr_get_nested }, 3216 { .type = PF_SN_RAF, .off = _OUT(raf), .cb = snl_attr_get_uint8 }, 3217 { .type = PF_SN_NODE_TYPE, .off = _OUT(type), .cb = snl_attr_get_uint8 }, 3218 }; 3219 #undef _OUT 3220 SNL_DECLARE_PARSER(srcnode_parser, struct genlmsghdr, snl_f_p_empty, ap_srcnode); 3221 3222 int 3223 pfctl_get_srcnodes(struct pfctl_handle *h, pfctl_get_srcnode_fn fn, void *arg) 3224 { 3225 struct snl_writer nw; 3226 struct pfctl_src_node sn; 3227 struct snl_errmsg_data e = {}; 3228 struct nlmsghdr *hdr; 3229 uint32_t seq_id; 3230 int family_id; 3231 int ret; 3232 3233 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME); 3234 if (family_id == 0) 3235 return (ENOTSUP); 3236 3237 snl_init_writer(&h->ss, &nw); 3238 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GET_SRCNODES); 3239 3240 if ((hdr = snl_finalize_msg(&nw)) == NULL) 3241 return (ENXIO); 3242 3243 seq_id = hdr->nlmsg_seq; 3244 3245 if (!snl_send_message(&h->ss, hdr)) 3246 return (ENXIO); 3247 3248 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) { 3249 bzero(&sn, sizeof(sn)); 3250 if (!snl_parse_nlmsg(&h->ss, hdr, &srcnode_parser, &sn)) 3251 continue; 3252 3253 ret = fn(&sn, arg); 3254 if (ret != 0) 3255 return (ret); 3256 } 3257 3258 return (e.error); 3259 } 3260 3261 static struct snl_attr_parser ap_ndel[] = { 3262 { .type = PF_T_NBR_DELETED, .off = 0, .cb = snl_attr_get_uint32 }, 3263 }; 3264 SNL_DECLARE_PARSER(ndel_parser, struct genlmsghdr, snl_f_p_empty, ap_ndel); 3265 3266 int 3267 pfctl_clear_tables(struct pfctl_handle *h, struct pfr_table *filter, 3268 int *ndel, int flags) 3269 { 3270 struct snl_writer nw; 3271 struct snl_errmsg_data e = {}; 3272 struct nlmsghdr *hdr; 3273 uint32_t seq_id; 3274 int family_id; 3275 3276 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME); 3277 if (family_id == 0) 3278 return (ENOTSUP); 3279 3280 snl_init_writer(&h->ss, &nw); 3281 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_CLEAR_TABLES); 3282 3283 snl_add_msg_attr_string(&nw, PF_T_ANCHOR, filter->pfrt_anchor); 3284 snl_add_msg_attr_string(&nw, PF_T_NAME, filter->pfrt_name); 3285 snl_add_msg_attr_u32(&nw, PF_T_TABLE_FLAGS, filter->pfrt_flags); 3286 snl_add_msg_attr_u32(&nw, PF_T_FLAGS, flags); 3287 3288 if ((hdr = snl_finalize_msg(&nw)) == NULL) 3289 return (ENXIO); 3290 3291 seq_id = hdr->nlmsg_seq; 3292 3293 if (!snl_send_message(&h->ss, hdr)) 3294 return (ENXIO); 3295 3296 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) { 3297 if (!snl_parse_nlmsg(&h->ss, hdr, &ndel_parser, ndel)) 3298 continue; 3299 } 3300 3301 return (e.error); 3302 } 3303 3304 static struct snl_attr_parser ap_nadd[] = { 3305 { .type = PF_T_NBR_ADDED, .off = 0, .cb = snl_attr_get_uint32 }, 3306 }; 3307 SNL_DECLARE_PARSER(nadd_parser, struct genlmsghdr, snl_f_p_empty, ap_nadd); 3308 int 3309 pfctl_add_table(struct pfctl_handle *h, struct pfr_table *table, 3310 int *nadd, int flags) 3311 { 3312 struct snl_writer nw; 3313 struct snl_errmsg_data e = {}; 3314 struct nlmsghdr *hdr; 3315 uint32_t seq_id; 3316 int family_id; 3317 3318 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME); 3319 if (family_id == 0) 3320 return (ENOTSUP); 3321 3322 snl_init_writer(&h->ss, &nw); 3323 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_ADD_TABLE); 3324 3325 snl_add_msg_attr_string(&nw, PF_T_ANCHOR, table->pfrt_anchor); 3326 snl_add_msg_attr_string(&nw, PF_T_NAME, table->pfrt_name); 3327 snl_add_msg_attr_u32(&nw, PF_T_TABLE_FLAGS, table->pfrt_flags); 3328 snl_add_msg_attr_u32(&nw, PF_T_FLAGS, flags); 3329 3330 if ((hdr = snl_finalize_msg(&nw)) == NULL) 3331 return (ENXIO); 3332 3333 seq_id = hdr->nlmsg_seq; 3334 3335 if (!snl_send_message(&h->ss, hdr)) 3336 return (ENXIO); 3337 3338 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) { 3339 if (!snl_parse_nlmsg(&h->ss, hdr, &nadd_parser, nadd)) 3340 continue; 3341 } 3342 3343 return (e.error); 3344 } 3345 3346 int 3347 pfctl_del_table(struct pfctl_handle *h, struct pfr_table *table, 3348 int *ndel, int flags) 3349 { 3350 struct snl_writer nw; 3351 struct snl_errmsg_data e = {}; 3352 struct nlmsghdr *hdr; 3353 uint32_t seq_id; 3354 int family_id; 3355 3356 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME); 3357 if (family_id == 0) 3358 return (ENOTSUP); 3359 3360 snl_init_writer(&h->ss, &nw); 3361 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_DEL_TABLE); 3362 3363 snl_add_msg_attr_string(&nw, PF_T_ANCHOR, table->pfrt_anchor); 3364 snl_add_msg_attr_string(&nw, PF_T_NAME, table->pfrt_name); 3365 snl_add_msg_attr_u32(&nw, PF_T_TABLE_FLAGS, table->pfrt_flags); 3366 snl_add_msg_attr_u32(&nw, PF_T_FLAGS, flags); 3367 3368 if ((hdr = snl_finalize_msg(&nw)) == NULL) 3369 return (ENXIO); 3370 3371 seq_id = hdr->nlmsg_seq; 3372 3373 if (!snl_send_message(&h->ss, hdr)) 3374 return (ENXIO); 3375 3376 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) { 3377 if (!snl_parse_nlmsg(&h->ss, hdr, &ndel_parser, ndel)) 3378 continue; 3379 } 3380 3381 return (e.error); 3382 } 3383 3384 static bool 3385 snl_attr_get_uint64_into_int_array(struct snl_state *ss, struct nlattr *nla, 3386 const void *arg, void *target) 3387 { 3388 uint64_t *u64target; 3389 struct snl_uint64_array a = { 3390 .count = 0, 3391 .max = (size_t)arg, 3392 }; 3393 bool error; 3394 3395 u64target = malloc(a.max * sizeof(uint64_t)); 3396 a.array = u64target; 3397 3398 error = snl_parse_header(ss, NLA_DATA(nla), NLA_DATA_LEN(nla), &array_parser, &a); 3399 if (! error) 3400 return (error); 3401 3402 for (size_t i = 0; i < a.count; i++) 3403 ((int *)target)[i] = (int)u64target[i]; 3404 3405 free(u64target); 3406 3407 return (true); 3408 } 3409 3410 #define _OUT(_field) offsetof(struct pfr_table, _field) 3411 static const struct snl_attr_parser ap_table[] = { 3412 { .type = PF_T_ANCHOR, .off = _OUT(pfrt_anchor), .arg = (void *)MAXPATHLEN, .cb = snl_attr_copy_string }, 3413 { .type = PF_T_NAME, .off = _OUT(pfrt_name), .arg = (void *)PF_TABLE_NAME_SIZE, .cb =snl_attr_copy_string }, 3414 { .type = PF_T_TABLE_FLAGS, .off = _OUT(pfrt_flags), .cb = snl_attr_get_uint32 }, 3415 }; 3416 #undef _OUT 3417 SNL_DECLARE_ATTR_PARSER(table_parser, ap_table); 3418 #define _OUT(_field) offsetof(struct pfr_tstats, _field) 3419 static struct snl_attr_parser ap_tstats[] = { 3420 { .type = PF_TS_TABLE, .off = _OUT(pfrts_t), .arg = &table_parser, .cb = snl_attr_get_nested }, 3421 { .type = PF_TS_PACKETS, .off = _OUT(pfrts_packets), .arg = (void *)(PFR_DIR_MAX * PFR_OP_TABLE_MAX), .cb = snl_attr_get_uint64_array}, 3422 { .type = PF_TS_BYTES, .off = _OUT(pfrts_bytes), .arg = (void *)(PFR_DIR_MAX * PFR_OP_TABLE_MAX), .cb = snl_attr_get_uint64_array }, 3423 { .type = PF_TS_MATCH, .off = _OUT(pfrts_match), .cb = snl_attr_get_uint64 }, 3424 {. type = PF_TS_NOMATCH, .off = _OUT(pfrts_nomatch), .cb = snl_attr_get_uint64 }, 3425 { .type = PF_TS_TZERO, .off = _OUT(pfrts_tzero), .cb = snl_attr_get_uint64 }, 3426 { .type = PF_TS_REFCNT, .off = _OUT(pfrts_cnt), . arg = (void *)PFR_REFCNT_MAX, .cb = snl_attr_get_uint64_into_int_array }, 3427 }; 3428 #undef _OUT 3429 SNL_DECLARE_PARSER(tstats_parser, struct genlmsghdr, snl_f_p_empty, ap_tstats); 3430 3431 int 3432 pfctl_get_tstats(struct pfctl_handle *h, const struct pfr_table *filter, 3433 pfctl_get_tstats_fn fn, void *arg) 3434 { 3435 struct snl_writer nw; 3436 struct snl_errmsg_data e = {}; 3437 struct nlmsghdr *hdr; 3438 uint32_t seq_id; 3439 int family_id; 3440 int ret; 3441 3442 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME); 3443 if (family_id == 0) 3444 return (ENOTSUP); 3445 3446 snl_init_writer(&h->ss, &nw); 3447 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GET_TSTATS); 3448 3449 snl_add_msg_attr_string(&nw, PF_T_ANCHOR, filter->pfrt_anchor); 3450 snl_add_msg_attr_string(&nw, PF_T_NAME, filter->pfrt_name); 3451 snl_add_msg_attr_u32(&nw, PF_T_TABLE_FLAGS, filter->pfrt_flags); 3452 3453 if ((hdr = snl_finalize_msg(&nw)) == NULL) 3454 return (ENXIO); 3455 3456 seq_id = hdr->nlmsg_seq; 3457 3458 if (!snl_send_message(&h->ss, hdr)) 3459 return (ENXIO); 3460 3461 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) { 3462 struct pfr_tstats tstats = {}; 3463 3464 if (!snl_parse_nlmsg(&h->ss, hdr, &tstats_parser, &tstats)) 3465 continue; 3466 3467 ret = fn(&tstats, arg); 3468 if (ret != 0) 3469 break; 3470 } 3471 3472 return (e.error); 3473 } 3474 3475 static struct snl_attr_parser ap_tstats_clr[] = { 3476 { .type = PF_TS_NZERO, .off = 0, .cb = snl_attr_get_uint64 }, 3477 }; 3478 SNL_DECLARE_PARSER(tstats_clr_parser, struct genlmsghdr, snl_f_p_empty, ap_tstats_clr); 3479 3480 int 3481 pfctl_clear_tstats(struct pfctl_handle *h, const struct pfr_table *filter, 3482 int *nzero, int flags) 3483 { 3484 struct snl_writer nw; 3485 struct snl_errmsg_data e = {}; 3486 struct nlmsghdr *hdr; 3487 uint64_t zero; 3488 uint32_t seq_id; 3489 int family_id; 3490 3491 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME); 3492 if (family_id == 0) 3493 return (ENOTSUP); 3494 3495 snl_init_writer(&h->ss, &nw); 3496 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_CLR_TSTATS); 3497 3498 snl_add_msg_attr_string(&nw, PF_T_ANCHOR, filter->pfrt_anchor); 3499 snl_add_msg_attr_string(&nw, PF_T_NAME, filter->pfrt_name); 3500 snl_add_msg_attr_u32(&nw, PF_T_TABLE_FLAGS, filter->pfrt_flags); 3501 snl_add_msg_attr_u32(&nw, PF_T_FLAGS, flags); 3502 3503 if ((hdr = snl_finalize_msg(&nw)) == NULL) 3504 return (ENXIO); 3505 3506 seq_id = hdr->nlmsg_seq; 3507 3508 if (!snl_send_message(&h->ss, hdr)) 3509 return (ENXIO); 3510 3511 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) { 3512 if (!snl_parse_nlmsg(&h->ss, hdr, &tstats_clr_parser, &zero)) 3513 continue; 3514 if (nzero) 3515 *nzero = (uint32_t)zero; 3516 } 3517 3518 return (e.error); 3519 } 3520 3521 static struct snl_attr_parser ap_clr_addrs[] = { 3522 { .type = PF_T_NBR_DELETED, .off = 0, .cb = snl_attr_get_uint64 }, 3523 }; 3524 SNL_DECLARE_PARSER(clr_addrs_parser, struct genlmsghdr, snl_f_p_empty, ap_clr_addrs); 3525 3526 int 3527 pfctl_clear_addrs(struct pfctl_handle *h, const struct pfr_table *filter, 3528 int *ndel, int flags) 3529 { 3530 struct snl_writer nw; 3531 struct snl_errmsg_data e = {}; 3532 struct nlmsghdr *hdr; 3533 uint64_t del; 3534 uint32_t seq_id; 3535 int family_id; 3536 3537 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME); 3538 if (family_id == 0) 3539 return (ENOTSUP); 3540 3541 snl_init_writer(&h->ss, &nw); 3542 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_CLR_ADDRS); 3543 3544 snl_add_msg_attr_string(&nw, PF_T_ANCHOR, filter->pfrt_anchor); 3545 snl_add_msg_attr_string(&nw, PF_T_NAME, filter->pfrt_name); 3546 snl_add_msg_attr_u32(&nw, PF_T_TABLE_FLAGS, filter->pfrt_flags); 3547 snl_add_msg_attr_u32(&nw, PF_T_FLAGS, flags); 3548 3549 if ((hdr = snl_finalize_msg(&nw)) == NULL) 3550 return (ENXIO); 3551 3552 seq_id = hdr->nlmsg_seq; 3553 3554 if (!snl_send_message(&h->ss, hdr)) 3555 return (ENXIO); 3556 3557 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) { 3558 if (!snl_parse_nlmsg(&h->ss, hdr, &clr_addrs_parser, &del)) 3559 continue; 3560 if (ndel) 3561 *ndel = (uint32_t)del; 3562 } 3563 3564 return (e.error); 3565 } 3566 3567