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