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_RATE_LIMIT, r->max_src_conn_rate.limit); 1237 snl_add_msg_attr_u32(nw, PF_RT_MAX_SRC_CONN_RATE_SECS, r->max_src_conn_rate.seconds); 1238 1239 snl_add_msg_attr_u16(nw, PF_RT_DNPIPE, r->dnpipe); 1240 snl_add_msg_attr_u16(nw, PF_RT_DNRPIPE, r->dnrpipe); 1241 snl_add_msg_attr_u32(nw, PF_RT_DNFLAGS, r->free_flags); 1242 1243 snl_add_msg_attr_u32(nw, PF_RT_NR, r->nr); 1244 snl_add_msg_attr_u32(nw, PF_RT_PROB, r->prob); 1245 snl_add_msg_attr_u32(nw, PF_RT_CUID, r->cuid); 1246 snl_add_msg_attr_u32(nw, PF_RT_CPID, r->cpid); 1247 1248 snl_add_msg_attr_u16(nw, PF_RT_RETURN_ICMP, r->return_icmp); 1249 snl_add_msg_attr_u16(nw, PF_RT_RETURN_ICMP6, r->return_icmp6); 1250 snl_add_msg_attr_u16(nw, PF_RT_MAX_MSS, r->max_mss); 1251 snl_add_msg_attr_u16(nw, PF_RT_SCRUB_FLAGS, r->scrub_flags); 1252 1253 snl_add_msg_attr_uid(nw, PF_RT_UID, &r->uid); 1254 snl_add_msg_attr_uid(nw, PF_RT_GID, (const struct pf_rule_uid *)&r->gid); 1255 1256 snl_add_msg_attr_u32(nw, PF_RT_RULE_FLAG, r->rule_flag); 1257 snl_add_msg_attr_u8(nw, PF_RT_ACTION, r->action); 1258 snl_add_msg_attr_u8(nw, PF_RT_DIRECTION, r->direction); 1259 snl_add_msg_attr_u8(nw, PF_RT_LOG, r->log); 1260 snl_add_msg_attr_u8(nw, PF_RT_LOGIF, r->logif); 1261 snl_add_msg_attr_u8(nw, PF_RT_QUICK, r->quick); 1262 snl_add_msg_attr_u8(nw, PF_RT_IF_NOT, r->ifnot); 1263 snl_add_msg_attr_u8(nw, PF_RT_MATCH_TAG_NOT, r->match_tag_not); 1264 snl_add_msg_attr_u8(nw, PF_RT_NATPASS, r->natpass); 1265 snl_add_msg_attr_u8(nw, PF_RT_KEEP_STATE, r->keep_state); 1266 snl_add_msg_attr_u8(nw, PF_RT_AF, r->af); 1267 snl_add_msg_attr_u8(nw, PF_RT_PROTO, r->proto); 1268 snl_add_msg_attr_u8(nw, PF_RT_TYPE, r->type); 1269 snl_add_msg_attr_u8(nw, PF_RT_CODE, r->code); 1270 snl_add_msg_attr_u8(nw, PF_RT_FLAGS, r->flags); 1271 snl_add_msg_attr_u8(nw, PF_RT_FLAGSET, r->flagset); 1272 snl_add_msg_attr_u8(nw, PF_RT_MIN_TTL, r->min_ttl); 1273 snl_add_msg_attr_u8(nw, PF_RT_ALLOW_OPTS, r->allow_opts); 1274 snl_add_msg_attr_u8(nw, PF_RT_RT, r->rt); 1275 snl_add_msg_attr_u8(nw, PF_RT_RETURN_TTL, r->return_ttl); 1276 snl_add_msg_attr_u8(nw, PF_RT_TOS, r->tos); 1277 snl_add_msg_attr_u8(nw, PF_RT_SET_TOS, r->set_tos); 1278 1279 snl_add_msg_attr_u8(nw, PF_RT_ANCHOR_RELATIVE, r->anchor_relative); 1280 snl_add_msg_attr_u8(nw, PF_RT_ANCHOR_WILDCARD, r->anchor_wildcard); 1281 snl_add_msg_attr_u8(nw, PF_RT_FLUSH, r->flush); 1282 snl_add_msg_attr_u8(nw, PF_RT_PRIO, r->prio); 1283 snl_add_msg_attr_u8(nw, PF_RT_SET_PRIO, r->set_prio[0]); 1284 snl_add_msg_attr_u8(nw, PF_RT_SET_PRIO_REPLY, r->set_prio[1]); 1285 1286 snl_add_msg_attr_ip6(nw, PF_RT_DIVERT_ADDRESS, &r->divert.addr.v6); 1287 snl_add_msg_attr_u16(nw, PF_RT_DIVERT_PORT, r->divert.port); 1288 1289 snl_end_attr_nested(nw, off); 1290 } 1291 1292 int 1293 pfctl_add_rule(int dev __unused, const struct pfctl_rule *r, const char *anchor, 1294 const char *anchor_call, uint32_t ticket, uint32_t pool_ticket) 1295 { 1296 struct pfctl_handle *h; 1297 int ret; 1298 1299 h = pfctl_open(PF_DEVICE); 1300 if (h == NULL) 1301 return (ENODEV); 1302 1303 ret = pfctl_add_rule_h(h, r, anchor, anchor_call, ticket, pool_ticket); 1304 1305 pfctl_close(h); 1306 1307 return (ret); 1308 } 1309 1310 int 1311 pfctl_add_rule_h(struct pfctl_handle *h, const struct pfctl_rule *r, 1312 const char *anchor, const char *anchor_call, uint32_t ticket, 1313 uint32_t pool_ticket) 1314 { 1315 struct snl_writer nw; 1316 struct snl_errmsg_data e = {}; 1317 struct nlmsghdr *hdr; 1318 uint32_t seq_id; 1319 int family_id; 1320 1321 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME); 1322 if (family_id == 0) 1323 return (ENOTSUP); 1324 1325 snl_init_writer(&h->ss, &nw); 1326 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_ADDRULE); 1327 hdr->nlmsg_flags |= NLM_F_DUMP; 1328 snl_add_msg_attr_u32(&nw, PF_ART_TICKET, ticket); 1329 snl_add_msg_attr_u32(&nw, PF_ART_POOL_TICKET, pool_ticket); 1330 snl_add_msg_attr_string(&nw, PF_ART_ANCHOR, anchor); 1331 snl_add_msg_attr_string(&nw, PF_ART_ANCHOR_CALL, anchor_call); 1332 1333 snl_add_msg_attr_pf_rule(&nw, PF_ART_RULE, r); 1334 1335 if ((hdr = snl_finalize_msg(&nw)) == NULL) 1336 return (ENXIO); 1337 1338 seq_id = hdr->nlmsg_seq; 1339 1340 if (! snl_send_message(&h->ss, hdr)) 1341 return (ENXIO); 1342 1343 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) { 1344 } 1345 1346 return (e.error); 1347 } 1348 1349 #define _IN(_field) offsetof(struct genlmsghdr, _field) 1350 #define _OUT(_field) offsetof(struct pfctl_rules_info, _field) 1351 static struct snl_attr_parser ap_getrules[] = { 1352 { .type = PF_GR_NR, .off = _OUT(nr), .cb = snl_attr_get_uint32 }, 1353 { .type = PF_GR_TICKET, .off = _OUT(ticket), .cb = snl_attr_get_uint32 }, 1354 }; 1355 static struct snl_field_parser fp_getrules[] = { 1356 }; 1357 #undef _IN 1358 #undef _OUT 1359 SNL_DECLARE_PARSER(getrules_parser, struct genlmsghdr, fp_getrules, ap_getrules); 1360 1361 int 1362 pfctl_get_rules_info_h(struct pfctl_handle *h, struct pfctl_rules_info *rules, uint32_t ruleset, 1363 const char *path) 1364 { 1365 struct snl_errmsg_data e = {}; 1366 struct nlmsghdr *hdr; 1367 struct snl_writer nw; 1368 uint32_t seq_id; 1369 int family_id; 1370 1371 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME); 1372 if (family_id == 0) 1373 return (ENOTSUP); 1374 1375 snl_init_writer(&h->ss, &nw); 1376 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GETRULES); 1377 hdr->nlmsg_flags |= NLM_F_DUMP; 1378 1379 snl_add_msg_attr_string(&nw, PF_GR_ANCHOR, path); 1380 snl_add_msg_attr_u8(&nw, PF_GR_ACTION, ruleset); 1381 1382 hdr = snl_finalize_msg(&nw); 1383 if (hdr == NULL) 1384 return (ENOMEM); 1385 1386 seq_id = hdr->nlmsg_seq; 1387 if (! snl_send_message(&h->ss, hdr)) 1388 return (ENXIO); 1389 1390 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) { 1391 if (! snl_parse_nlmsg(&h->ss, hdr, &getrules_parser, rules)) 1392 continue; 1393 } 1394 1395 return (e.error); 1396 } 1397 1398 int 1399 pfctl_get_rules_info(int dev __unused, struct pfctl_rules_info *rules, uint32_t ruleset, 1400 const char *path) 1401 { 1402 struct pfctl_handle *h; 1403 int error; 1404 1405 h = pfctl_open(PF_DEVICE); 1406 if (h == NULL) 1407 return (ENOTSUP); 1408 error = pfctl_get_rules_info_h(h, rules, ruleset, path); 1409 pfctl_close(h); 1410 1411 return (error); 1412 } 1413 1414 int 1415 pfctl_get_rule_h(struct pfctl_handle *h, uint32_t nr, uint32_t ticket, const char *anchor, 1416 uint32_t ruleset, struct pfctl_rule *rule, char *anchor_call) 1417 { 1418 return (pfctl_get_clear_rule_h(h, nr, ticket, anchor, ruleset, rule, 1419 anchor_call, false)); 1420 } 1421 1422 int 1423 pfctl_get_rule(int dev, uint32_t nr, uint32_t ticket, const char *anchor, 1424 uint32_t ruleset, struct pfctl_rule *rule, char *anchor_call) 1425 { 1426 return (pfctl_get_clear_rule(dev, nr, ticket, anchor, ruleset, rule, 1427 anchor_call, false)); 1428 } 1429 1430 #define _OUT(_field) offsetof(struct pf_addr_wrap, _field) 1431 static const struct snl_attr_parser ap_addr_wrap[] = { 1432 { .type = PF_AT_ADDR, .off = _OUT(v.a.addr), .cb = snl_attr_get_in6_addr }, 1433 { .type = PF_AT_MASK, .off = _OUT(v.a.mask), .cb = snl_attr_get_in6_addr }, 1434 { .type = PF_AT_IFNAME, .off = _OUT(v.ifname), .arg = (void *)IFNAMSIZ,.cb = snl_attr_copy_string }, 1435 { .type = PF_AT_TABLENAME, .off = _OUT(v.tblname), .arg = (void *)PF_TABLE_NAME_SIZE, .cb = snl_attr_copy_string }, 1436 { .type = PF_AT_TYPE, .off = _OUT(type), .cb = snl_attr_get_uint8 }, 1437 { .type = PF_AT_IFLAGS, .off = _OUT(iflags), .cb = snl_attr_get_uint8 }, 1438 { .type = PF_AT_TBLCNT, .off = _OUT(p.tblcnt), .cb = snl_attr_get_uint32 }, 1439 { .type = PF_AT_DYNCNT, .off = _OUT(p.dyncnt), .cb = snl_attr_get_uint32 }, 1440 }; 1441 SNL_DECLARE_ATTR_PARSER(addr_wrap_parser, ap_addr_wrap); 1442 #undef _OUT 1443 1444 #define _OUT(_field) offsetof(struct pf_rule_addr, _field) 1445 static struct snl_attr_parser ap_rule_addr[] = { 1446 { .type = PF_RAT_ADDR, .off = _OUT(addr), .arg = &addr_wrap_parser, .cb = snl_attr_get_nested }, 1447 { .type = PF_RAT_SRC_PORT, .off = _OUT(port[0]), .cb = snl_attr_get_uint16 }, 1448 { .type = PF_RAT_DST_PORT, .off = _OUT(port[1]), .cb = snl_attr_get_uint16 }, 1449 { .type = PF_RAT_NEG, .off = _OUT(neg), .cb = snl_attr_get_uint8 }, 1450 { .type = PF_RAT_OP, .off = _OUT(port_op), .cb = snl_attr_get_uint8 }, 1451 }; 1452 #undef _OUT 1453 SNL_DECLARE_ATTR_PARSER(rule_addr_parser, ap_rule_addr); 1454 1455 struct snl_parsed_labels 1456 { 1457 char labels[PF_RULE_MAX_LABEL_COUNT][PF_RULE_LABEL_SIZE]; 1458 uint32_t i; 1459 }; 1460 1461 static bool 1462 snl_attr_get_pf_rule_labels(struct snl_state *ss, struct nlattr *nla, 1463 const void *arg __unused, void *target) 1464 { 1465 struct snl_parsed_labels *l = (struct snl_parsed_labels *)target; 1466 bool ret; 1467 1468 if (l->i >= PF_RULE_MAX_LABEL_COUNT) 1469 return (E2BIG); 1470 1471 ret = snl_attr_copy_string(ss, nla, (void *)PF_RULE_LABEL_SIZE, 1472 l->labels[l->i]); 1473 if (ret) 1474 l->i++; 1475 1476 return (ret); 1477 } 1478 1479 #define _OUT(_field) offsetof(struct nl_parsed_labels, _field) 1480 static const struct snl_attr_parser ap_labels[] = { 1481 { .type = PF_LT_LABEL, .off = 0, .cb = snl_attr_get_pf_rule_labels }, 1482 }; 1483 SNL_DECLARE_ATTR_PARSER(rule_labels_parser, ap_labels); 1484 #undef _OUT 1485 1486 static bool 1487 snl_attr_get_nested_pf_rule_labels(struct snl_state *ss, struct nlattr *nla, 1488 const void *arg __unused, void *target) 1489 { 1490 struct snl_parsed_labels parsed_labels = { }; 1491 bool error; 1492 1493 /* Assumes target points to the beginning of the structure */ 1494 error = snl_parse_header(ss, NLA_DATA(nla), NLA_DATA_LEN(nla), &rule_labels_parser, &parsed_labels); 1495 if (! error) 1496 return (error); 1497 1498 memcpy(target, parsed_labels.labels, sizeof(parsed_labels.labels)); 1499 1500 return (true); 1501 } 1502 1503 #define _OUT(_field) offsetof(struct pf_mape_portset, _field) 1504 static const struct snl_attr_parser ap_mape_portset[] = { 1505 { .type = PF_MET_OFFSET, .off = _OUT(offset), .cb = snl_attr_get_uint8 }, 1506 { .type = PF_MET_PSID_LEN, .off = _OUT(psidlen), .cb = snl_attr_get_uint8 }, 1507 {. type = PF_MET_PSID, .off = _OUT(psid), .cb = snl_attr_get_uint16 }, 1508 }; 1509 SNL_DECLARE_ATTR_PARSER(mape_portset_parser, ap_mape_portset); 1510 #undef _OUT 1511 1512 #define _OUT(_field) offsetof(struct pfctl_pool, _field) 1513 static const struct snl_attr_parser ap_pool[] = { 1514 { .type = PF_PT_KEY, .off = _OUT(key), .arg = (void *)sizeof(struct pf_poolhashkey), .cb = snl_attr_get_bytes }, 1515 { .type = PF_PT_COUNTER, .off = _OUT(counter), .cb = snl_attr_get_in6_addr }, 1516 { .type = PF_PT_TBLIDX, .off = _OUT(tblidx), .cb = snl_attr_get_uint32 }, 1517 { .type = PF_PT_PROXY_SRC_PORT, .off = _OUT(proxy_port[0]), .cb = snl_attr_get_uint16 }, 1518 { .type = PF_PT_PROXY_DST_PORT, .off = _OUT(proxy_port[1]), .cb = snl_attr_get_uint16 }, 1519 { .type = PF_PT_OPTS, .off = _OUT(opts), .cb = snl_attr_get_uint8 }, 1520 { .type = PF_PT_MAPE, .off = _OUT(mape), .arg = &mape_portset_parser, .cb = snl_attr_get_nested }, 1521 }; 1522 SNL_DECLARE_ATTR_PARSER(pool_parser, ap_pool); 1523 #undef _OUT 1524 1525 struct nl_parsed_timeouts 1526 { 1527 uint32_t timeouts[PFTM_MAX]; 1528 uint32_t i; 1529 }; 1530 1531 static bool 1532 snl_attr_get_pf_timeout(struct snl_state *ss, struct nlattr *nla, 1533 const void *arg __unused, void *target) 1534 { 1535 struct nl_parsed_timeouts *t = (struct nl_parsed_timeouts *)target; 1536 bool ret; 1537 1538 if (t->i >= PFTM_MAX) 1539 return (E2BIG); 1540 1541 ret = snl_attr_get_uint32(ss, nla, NULL, &t->timeouts[t->i]); 1542 if (ret) 1543 t->i++; 1544 1545 return (ret); 1546 } 1547 1548 #define _OUT(_field) offsetof(struct nl_parsed_timeout, _field) 1549 static const struct snl_attr_parser ap_timeouts[] = { 1550 { .type = PF_TT_TIMEOUT, .off = 0, .cb = snl_attr_get_pf_timeout }, 1551 }; 1552 SNL_DECLARE_ATTR_PARSER(timeout_parser, ap_timeouts); 1553 #undef _OUT 1554 1555 static bool 1556 snl_attr_get_nested_timeouts(struct snl_state *ss, struct nlattr *nla, 1557 const void *arg __unused, void *target) 1558 { 1559 struct nl_parsed_timeouts parsed_timeouts = { }; 1560 bool error; 1561 1562 /* Assumes target points to the beginning of the structure */ 1563 error = snl_parse_header(ss, NLA_DATA(nla), NLA_DATA_LEN(nla), &timeout_parser, &parsed_timeouts); 1564 if (! error) 1565 return (error); 1566 1567 memcpy(target, parsed_timeouts.timeouts, sizeof(parsed_timeouts.timeouts)); 1568 1569 return (true); 1570 } 1571 1572 #define _OUT(_field) offsetof(struct pf_rule_uid, _field) 1573 static const struct snl_attr_parser ap_rule_uid[] = { 1574 { .type = PF_RUT_UID_LOW, .off = _OUT(uid[0]), .cb = snl_attr_get_uint32 }, 1575 { .type = PF_RUT_UID_HIGH, .off = _OUT(uid[1]), .cb = snl_attr_get_uint32 }, 1576 { .type = PF_RUT_OP, .off = _OUT(op), .cb = snl_attr_get_uint8 }, 1577 }; 1578 SNL_DECLARE_ATTR_PARSER(rule_uid_parser, ap_rule_uid); 1579 #undef _OUT 1580 1581 struct pfctl_nl_get_rule { 1582 struct pfctl_rule r; 1583 char anchor_call[MAXPATHLEN]; 1584 }; 1585 #define _OUT(_field) offsetof(struct pfctl_nl_get_rule, _field) 1586 static struct snl_attr_parser ap_getrule[] = { 1587 { .type = PF_RT_SRC, .off = _OUT(r.src), .arg = &rule_addr_parser,.cb = snl_attr_get_nested }, 1588 { .type = PF_RT_DST, .off = _OUT(r.dst), .arg = &rule_addr_parser,.cb = snl_attr_get_nested }, 1589 { .type = PF_RT_RIDENTIFIER, .off = _OUT(r.ridentifier), .cb = snl_attr_get_uint32 }, 1590 { .type = PF_RT_LABELS, .off = _OUT(r.label), .arg = &rule_labels_parser,.cb = snl_attr_get_nested_pf_rule_labels }, 1591 { .type = PF_RT_IFNAME, .off = _OUT(r.ifname), .arg = (void *)IFNAMSIZ, .cb = snl_attr_copy_string }, 1592 { .type = PF_RT_QNAME, .off = _OUT(r.qname), .arg = (void *)PF_QNAME_SIZE, .cb = snl_attr_copy_string }, 1593 { .type = PF_RT_PQNAME, .off = _OUT(r.pqname), .arg = (void *)PF_QNAME_SIZE, .cb = snl_attr_copy_string }, 1594 { .type = PF_RT_TAGNAME, .off = _OUT(r.tagname), .arg = (void *)PF_TAG_NAME_SIZE, .cb = snl_attr_copy_string }, 1595 { .type = PF_RT_MATCH_TAGNAME, .off = _OUT(r.match_tagname), .arg = (void *)PF_TAG_NAME_SIZE, .cb = snl_attr_copy_string }, 1596 { .type = PF_RT_OVERLOAD_TBLNAME, .off = _OUT(r.overload_tblname), .arg = (void *)PF_TABLE_NAME_SIZE, .cb = snl_attr_copy_string }, 1597 { .type = PF_RT_RPOOL, .off = _OUT(r.rpool), .arg = &pool_parser, .cb = snl_attr_get_nested }, 1598 { .type = PF_RT_OS_FINGERPRINT, .off = _OUT(r.os_fingerprint), .cb = snl_attr_get_uint32 }, 1599 { .type = PF_RT_RTABLEID, .off = _OUT(r.rtableid), .cb = snl_attr_get_uint32 }, 1600 { .type = PF_RT_TIMEOUT, .off = _OUT(r.timeout), .arg = &timeout_parser, .cb = snl_attr_get_nested_timeouts }, 1601 { .type = PF_RT_MAX_STATES, .off = _OUT(r.max_states), .cb = snl_attr_get_uint32 }, 1602 { .type = PF_RT_MAX_SRC_NODES, .off = _OUT(r.max_src_nodes), .cb = snl_attr_get_uint32 }, 1603 { .type = PF_RT_MAX_SRC_STATES, .off = _OUT(r.max_src_states), .cb = snl_attr_get_uint32 }, 1604 { .type = PF_RT_MAX_SRC_CONN_RATE_LIMIT, .off = _OUT(r.max_src_conn_rate.limit), .cb = snl_attr_get_uint32 }, 1605 { .type = PF_RT_MAX_SRC_CONN_RATE_SECS, .off = _OUT(r.max_src_conn_rate.seconds), .cb = snl_attr_get_uint32 }, 1606 { .type = PF_RT_DNPIPE, .off = _OUT(r.dnpipe), .cb = snl_attr_get_uint16 }, 1607 { .type = PF_RT_DNRPIPE, .off = _OUT(r.dnrpipe), .cb = snl_attr_get_uint16 }, 1608 { .type = PF_RT_DNFLAGS, .off = _OUT(r.free_flags), .cb = snl_attr_get_uint32 }, 1609 { .type = PF_RT_NR, .off = _OUT(r.nr), .cb = snl_attr_get_uint32 }, 1610 { .type = PF_RT_PROB, .off = _OUT(r.prob), .cb = snl_attr_get_uint32 }, 1611 { .type = PF_RT_CUID, .off = _OUT(r.cuid), .cb = snl_attr_get_uint32 }, 1612 {. type = PF_RT_CPID, .off = _OUT(r.cpid), .cb = snl_attr_get_uint32 }, 1613 { .type = PF_RT_RETURN_ICMP, .off = _OUT(r.return_icmp), .cb = snl_attr_get_uint16 }, 1614 { .type = PF_RT_RETURN_ICMP6, .off = _OUT(r.return_icmp6), .cb = snl_attr_get_uint16 }, 1615 { .type = PF_RT_MAX_MSS, .off = _OUT(r.max_mss), .cb = snl_attr_get_uint16 }, 1616 { .type = PF_RT_SCRUB_FLAGS, .off = _OUT(r.scrub_flags), .cb = snl_attr_get_uint16 }, 1617 { .type = PF_RT_UID, .off = _OUT(r.uid), .arg = &rule_uid_parser, .cb = snl_attr_get_nested }, 1618 { .type = PF_RT_GID, .off = _OUT(r.gid), .arg = &rule_uid_parser, .cb = snl_attr_get_nested }, 1619 { .type = PF_RT_RULE_FLAG, .off = _OUT(r.rule_flag), .cb = snl_attr_get_uint32 }, 1620 { .type = PF_RT_ACTION, .off = _OUT(r.action), .cb = snl_attr_get_uint8 }, 1621 { .type = PF_RT_DIRECTION, .off = _OUT(r.direction), .cb = snl_attr_get_uint8 }, 1622 { .type = PF_RT_LOG, .off = _OUT(r.log), .cb = snl_attr_get_uint8 }, 1623 { .type = PF_RT_LOGIF, .off = _OUT(r.logif), .cb = snl_attr_get_uint8 }, 1624 { .type = PF_RT_QUICK, .off = _OUT(r.quick), .cb = snl_attr_get_uint8 }, 1625 { .type = PF_RT_IF_NOT, .off = _OUT(r.ifnot), .cb = snl_attr_get_uint8 }, 1626 { .type = PF_RT_MATCH_TAG_NOT, .off = _OUT(r.match_tag_not), .cb = snl_attr_get_uint8 }, 1627 { .type = PF_RT_NATPASS, .off = _OUT(r.natpass), .cb = snl_attr_get_uint8 }, 1628 { .type = PF_RT_KEEP_STATE, .off = _OUT(r.keep_state), .cb = snl_attr_get_uint8 }, 1629 { .type = PF_RT_AF, .off = _OUT(r.af), .cb = snl_attr_get_uint8 }, 1630 { .type = PF_RT_PROTO, .off = _OUT(r.proto), .cb = snl_attr_get_uint8 }, 1631 { .type = PF_RT_TYPE, .off = _OUT(r.type), .cb = snl_attr_get_uint8 }, 1632 { .type = PF_RT_CODE, .off = _OUT(r.code), .cb = snl_attr_get_uint8 }, 1633 { .type = PF_RT_FLAGS, .off = _OUT(r.flags), .cb = snl_attr_get_uint8 }, 1634 { .type = PF_RT_FLAGSET, .off = _OUT(r.flagset), .cb = snl_attr_get_uint8 }, 1635 { .type = PF_RT_MIN_TTL, .off = _OUT(r.min_ttl), .cb = snl_attr_get_uint8 }, 1636 { .type = PF_RT_ALLOW_OPTS, .off = _OUT(r.allow_opts), .cb = snl_attr_get_uint8 }, 1637 { .type = PF_RT_RT, .off = _OUT(r.rt), .cb = snl_attr_get_uint8 }, 1638 { .type = PF_RT_RETURN_TTL, .off = _OUT(r.return_ttl), .cb = snl_attr_get_uint8 }, 1639 { .type = PF_RT_TOS, .off = _OUT(r.tos), .cb = snl_attr_get_uint8 }, 1640 { .type = PF_RT_SET_TOS, .off = _OUT(r.set_tos), .cb = snl_attr_get_uint8 }, 1641 { .type = PF_RT_ANCHOR_RELATIVE, .off = _OUT(r.anchor_relative), .cb = snl_attr_get_uint8 }, 1642 { .type = PF_RT_ANCHOR_WILDCARD, .off = _OUT(r.anchor_wildcard), .cb = snl_attr_get_uint8 }, 1643 { .type = PF_RT_FLUSH, .off = _OUT(r.flush), .cb = snl_attr_get_uint8 }, 1644 { .type = PF_RT_PRIO, .off = _OUT(r.prio), .cb = snl_attr_get_uint8 }, 1645 { .type = PF_RT_SET_PRIO, .off = _OUT(r.set_prio[0]), .cb = snl_attr_get_uint8 }, 1646 { .type = PF_RT_SET_PRIO_REPLY, .off = _OUT(r.set_prio[1]), .cb = snl_attr_get_uint8 }, 1647 { .type = PF_RT_DIVERT_ADDRESS, .off = _OUT(r.divert.addr), .cb = snl_attr_get_in6_addr }, 1648 { .type = PF_RT_DIVERT_PORT, .off = _OUT(r.divert.port), .cb = snl_attr_get_uint16 }, 1649 { .type = PF_RT_PACKETS_IN, .off = _OUT(r.packets[0]), .cb = snl_attr_get_uint64 }, 1650 { .type = PF_RT_PACKETS_OUT, .off = _OUT(r.packets[1]), .cb = snl_attr_get_uint64 }, 1651 { .type = PF_RT_BYTES_IN, .off = _OUT(r.bytes[0]), .cb = snl_attr_get_uint64 }, 1652 { .type = PF_RT_BYTES_OUT, .off = _OUT(r.bytes[1]), .cb = snl_attr_get_uint64 }, 1653 { .type = PF_RT_EVALUATIONS, .off = _OUT(r.evaluations), .cb = snl_attr_get_uint64 }, 1654 { .type = PF_RT_TIMESTAMP, .off = _OUT(r.last_active_timestamp), .cb = snl_attr_get_uint64 }, 1655 { .type = PF_RT_STATES_CUR, .off = _OUT(r.states_cur), .cb = snl_attr_get_uint64 }, 1656 { .type = PF_RT_STATES_TOTAL, .off = _OUT(r.states_tot), .cb = snl_attr_get_uint64 }, 1657 { .type = PF_RT_SRC_NODES, .off = _OUT(r.src_nodes), .cb = snl_attr_get_uint64 }, 1658 { .type = PF_RT_ANCHOR_CALL, .off = _OUT(anchor_call), .arg = (void*)MAXPATHLEN, .cb = snl_attr_copy_string }, 1659 }; 1660 static struct snl_field_parser fp_getrule[] = {}; 1661 #undef _OUT 1662 SNL_DECLARE_PARSER(getrule_parser, struct genlmsghdr, fp_getrule, ap_getrule); 1663 1664 int 1665 pfctl_get_clear_rule_h(struct pfctl_handle *h, uint32_t nr, uint32_t ticket, 1666 const char *anchor, uint32_t ruleset, struct pfctl_rule *rule, 1667 char *anchor_call, bool clear) 1668 { 1669 struct pfctl_nl_get_rule attrs = {}; 1670 struct snl_errmsg_data e = {}; 1671 struct nlmsghdr *hdr; 1672 struct snl_writer nw; 1673 uint32_t seq_id; 1674 int family_id; 1675 1676 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME); 1677 if (family_id == 0) 1678 return (ENOTSUP); 1679 1680 snl_init_writer(&h->ss, &nw); 1681 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GETRULE); 1682 hdr->nlmsg_flags |= NLM_F_DUMP; 1683 1684 snl_add_msg_attr_string(&nw, PF_GR_ANCHOR, anchor); 1685 snl_add_msg_attr_u8(&nw, PF_GR_ACTION, ruleset); 1686 snl_add_msg_attr_u32(&nw, PF_GR_NR, nr); 1687 snl_add_msg_attr_u32(&nw, PF_GR_TICKET, ticket); 1688 snl_add_msg_attr_u8(&nw, PF_GR_CLEAR, clear); 1689 1690 hdr = snl_finalize_msg(&nw); 1691 if (hdr == NULL) 1692 return (ENOMEM); 1693 1694 seq_id = hdr->nlmsg_seq; 1695 if (! snl_send_message(&h->ss, hdr)) 1696 return (ENXIO); 1697 1698 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) { 1699 if (! snl_parse_nlmsg(&h->ss, hdr, &getrule_parser, &attrs)) 1700 continue; 1701 } 1702 1703 memcpy(rule, &attrs.r, sizeof(attrs.r)); 1704 strlcpy(anchor_call, attrs.anchor_call, MAXPATHLEN); 1705 1706 return (e.error); 1707 } 1708 1709 int 1710 pfctl_get_clear_rule(int dev, uint32_t nr, uint32_t ticket, 1711 const char *anchor, uint32_t ruleset, struct pfctl_rule *rule, 1712 char *anchor_call, bool clear) 1713 { 1714 nvlist_t *nvl; 1715 int ret; 1716 1717 nvl = nvlist_create(0); 1718 if (nvl == 0) 1719 return (ENOMEM); 1720 1721 nvlist_add_number(nvl, "nr", nr); 1722 nvlist_add_number(nvl, "ticket", ticket); 1723 nvlist_add_string(nvl, "anchor", anchor); 1724 nvlist_add_number(nvl, "ruleset", ruleset); 1725 1726 if (clear) 1727 nvlist_add_bool(nvl, "clear_counter", true); 1728 1729 if ((ret = pfctl_do_ioctl(dev, DIOCGETRULENV, 8192, &nvl)) != 0) 1730 goto out; 1731 1732 pf_nvrule_to_rule(nvlist_get_nvlist(nvl, "rule"), rule); 1733 1734 if (anchor_call) 1735 strlcpy(anchor_call, nvlist_get_string(nvl, "anchor_call"), 1736 MAXPATHLEN); 1737 1738 out: 1739 nvlist_destroy(nvl); 1740 return (ret); 1741 } 1742 1743 int 1744 pfctl_set_keepcounters(int dev, bool keep) 1745 { 1746 struct pfioc_nv nv; 1747 nvlist_t *nvl; 1748 int ret; 1749 1750 nvl = nvlist_create(0); 1751 1752 nvlist_add_bool(nvl, "keep_counters", keep); 1753 1754 nv.data = nvlist_pack(nvl, &nv.len); 1755 nv.size = nv.len; 1756 1757 nvlist_destroy(nvl); 1758 1759 ret = ioctl(dev, DIOCKEEPCOUNTERS, &nv); 1760 1761 free(nv.data); 1762 return (ret); 1763 } 1764 1765 struct pfctl_creator { 1766 uint32_t id; 1767 }; 1768 #define _IN(_field) offsetof(struct genlmsghdr, _field) 1769 #define _OUT(_field) offsetof(struct pfctl_creator, _field) 1770 static struct snl_attr_parser ap_creators[] = { 1771 { .type = PF_ST_CREATORID, .off = _OUT(id), .cb = snl_attr_get_uint32 }, 1772 }; 1773 static struct snl_field_parser fp_creators[] = { 1774 }; 1775 #undef _IN 1776 #undef _OUT 1777 SNL_DECLARE_PARSER(creator_parser, struct genlmsghdr, fp_creators, ap_creators); 1778 1779 static int 1780 pfctl_get_creators_nl(struct snl_state *ss, uint32_t *creators, size_t *len) 1781 { 1782 1783 int family_id = snl_get_genl_family(ss, PFNL_FAMILY_NAME); 1784 size_t i = 0; 1785 1786 struct nlmsghdr *hdr; 1787 struct snl_writer nw; 1788 1789 if (family_id == 0) 1790 return (ENOTSUP); 1791 1792 snl_init_writer(ss, &nw); 1793 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GETCREATORS); 1794 hdr->nlmsg_flags |= NLM_F_DUMP; 1795 hdr = snl_finalize_msg(&nw); 1796 if (hdr == NULL) 1797 return (ENOMEM); 1798 uint32_t seq_id = hdr->nlmsg_seq; 1799 1800 snl_send_message(ss, hdr); 1801 1802 struct snl_errmsg_data e = {}; 1803 while ((hdr = snl_read_reply_multi(ss, seq_id, &e)) != NULL) { 1804 struct pfctl_creator c; 1805 bzero(&c, sizeof(c)); 1806 1807 if (!snl_parse_nlmsg(ss, hdr, &creator_parser, &c)) 1808 continue; 1809 1810 creators[i] = c.id; 1811 i++; 1812 if (i > *len) 1813 return (E2BIG); 1814 } 1815 1816 *len = i; 1817 1818 return (0); 1819 } 1820 1821 int 1822 pfctl_get_creatorids(struct pfctl_handle *h, uint32_t *creators, size_t *len) 1823 { 1824 int error; 1825 1826 error = pfctl_get_creators_nl(&h->ss, creators, len); 1827 1828 return (error); 1829 } 1830 1831 static inline bool 1832 snl_attr_get_pfaddr(struct snl_state *ss __unused, struct nlattr *nla, 1833 const void *arg __unused, void *target) 1834 { 1835 memcpy(target, NLA_DATA(nla), NLA_DATA_LEN(nla)); 1836 return (true); 1837 } 1838 1839 static inline bool 1840 snl_attr_store_ifname(struct snl_state *ss __unused, struct nlattr *nla, 1841 const void *arg __unused, void *target) 1842 { 1843 size_t maxlen = NLA_DATA_LEN(nla); 1844 1845 if (strnlen((char *)NLA_DATA(nla), maxlen) < maxlen) { 1846 strlcpy(target, (char *)NLA_DATA(nla), maxlen); 1847 return (true); 1848 } 1849 return (false); 1850 } 1851 1852 #define _OUT(_field) offsetof(struct pfctl_state_peer, _field) 1853 static const struct snl_attr_parser nla_p_speer[] = { 1854 { .type = PF_STP_SEQLO, .off = _OUT(seqlo), .cb = snl_attr_get_uint32 }, 1855 { .type = PF_STP_SEQHI, .off = _OUT(seqhi), .cb = snl_attr_get_uint32 }, 1856 { .type = PF_STP_SEQDIFF, .off = _OUT(seqdiff), .cb = snl_attr_get_uint32 }, 1857 { .type = PF_STP_STATE, .off = _OUT(state), .cb = snl_attr_get_uint8 }, 1858 { .type = PF_STP_WSCALE, .off = _OUT(wscale), .cb = snl_attr_get_uint8 }, 1859 }; 1860 SNL_DECLARE_ATTR_PARSER(speer_parser, nla_p_speer); 1861 #undef _OUT 1862 1863 #define _OUT(_field) offsetof(struct pf_state_key_export, _field) 1864 static const struct snl_attr_parser nla_p_skey[] = { 1865 { .type = PF_STK_ADDR0, .off = _OUT(addr[0]), .cb = snl_attr_get_pfaddr }, 1866 { .type = PF_STK_ADDR1, .off = _OUT(addr[1]), .cb = snl_attr_get_pfaddr }, 1867 { .type = PF_STK_PORT0, .off = _OUT(port[0]), .cb = snl_attr_get_uint16 }, 1868 { .type = PF_STK_PORT1, .off = _OUT(port[1]), .cb = snl_attr_get_uint16 }, 1869 }; 1870 SNL_DECLARE_ATTR_PARSER(skey_parser, nla_p_skey); 1871 #undef _OUT 1872 1873 #define _IN(_field) offsetof(struct genlmsghdr, _field) 1874 #define _OUT(_field) offsetof(struct pfctl_state, _field) 1875 static struct snl_attr_parser ap_state[] = { 1876 { .type = PF_ST_ID, .off = _OUT(id), .cb = snl_attr_get_uint64 }, 1877 { .type = PF_ST_CREATORID, .off = _OUT(creatorid), .cb = snl_attr_get_uint32 }, 1878 { .type = PF_ST_IFNAME, .off = _OUT(ifname), .cb = snl_attr_store_ifname }, 1879 { .type = PF_ST_ORIG_IFNAME, .off = _OUT(orig_ifname), .cb = snl_attr_store_ifname }, 1880 { .type = PF_ST_KEY_WIRE, .off = _OUT(key[0]), .arg = &skey_parser, .cb = snl_attr_get_nested }, 1881 { .type = PF_ST_KEY_STACK, .off = _OUT(key[1]), .arg = &skey_parser, .cb = snl_attr_get_nested }, 1882 { .type = PF_ST_PEER_SRC, .off = _OUT(src), .arg = &speer_parser, .cb = snl_attr_get_nested }, 1883 { .type = PF_ST_PEER_DST, .off = _OUT(dst), .arg = &speer_parser, .cb = snl_attr_get_nested }, 1884 { .type = PF_ST_RT_ADDR, .off = _OUT(rt_addr), .cb = snl_attr_get_pfaddr }, 1885 { .type = PF_ST_RULE, .off = _OUT(rule), .cb = snl_attr_get_uint32 }, 1886 { .type = PF_ST_ANCHOR, .off = _OUT(anchor), .cb = snl_attr_get_uint32 }, 1887 { .type = PF_ST_NAT_RULE, .off = _OUT(nat_rule), .cb = snl_attr_get_uint32 }, 1888 { .type = PF_ST_CREATION, .off = _OUT(creation), .cb = snl_attr_get_uint32 }, 1889 { .type = PF_ST_EXPIRE, .off = _OUT(expire), .cb = snl_attr_get_uint32 }, 1890 { .type = PF_ST_PACKETS0, .off = _OUT(packets[0]), .cb = snl_attr_get_uint64 }, 1891 { .type = PF_ST_PACKETS1, .off = _OUT(packets[1]), .cb = snl_attr_get_uint64 }, 1892 { .type = PF_ST_BYTES0, .off = _OUT(bytes[0]), .cb = snl_attr_get_uint64 }, 1893 { .type = PF_ST_BYTES1, .off = _OUT(bytes[1]), .cb = snl_attr_get_uint64 }, 1894 { .type = PF_ST_AF, .off = _OUT(key[0].af), .cb = snl_attr_get_uint8 }, 1895 { .type = PF_ST_PROTO, .off = _OUT(key[0].proto), .cb = snl_attr_get_uint8 }, 1896 { .type = PF_ST_DIRECTION, .off = _OUT(direction), .cb = snl_attr_get_uint8 }, 1897 { .type = PF_ST_LOG, .off = _OUT(log), .cb = snl_attr_get_uint8 }, 1898 { .type = PF_ST_STATE_FLAGS, .off = _OUT(state_flags), .cb = snl_attr_get_uint16 }, 1899 { .type = PF_ST_SYNC_FLAGS, .off = _OUT(sync_flags), .cb = snl_attr_get_uint8 }, 1900 { .type = PF_ST_RTABLEID, .off = _OUT(rtableid), .cb = snl_attr_get_int32 }, 1901 { .type = PF_ST_MIN_TTL, .off = _OUT(min_ttl), .cb = snl_attr_get_uint8 }, 1902 { .type = PF_ST_MAX_MSS, .off = _OUT(max_mss), .cb = snl_attr_get_uint16 }, 1903 { .type = PF_ST_DNPIPE, .off = _OUT(dnpipe), .cb = snl_attr_get_uint16 }, 1904 { .type = PF_ST_DNRPIPE, .off = _OUT(dnrpipe), .cb = snl_attr_get_uint16 }, 1905 { .type = PF_ST_RT, .off = _OUT(rt), .cb = snl_attr_get_uint8 }, 1906 { .type = PF_ST_RT_IFNAME, .off = _OUT(rt_ifname), .cb = snl_attr_store_ifname }, 1907 }; 1908 static struct snl_field_parser fp_state[] = { 1909 }; 1910 #undef _IN 1911 #undef _OUT 1912 SNL_DECLARE_PARSER(state_parser, struct genlmsghdr, fp_state, ap_state); 1913 1914 static const struct snl_hdr_parser *all_parsers[] = { 1915 &state_parser, &skey_parser, &speer_parser, 1916 &creator_parser, &getrules_parser 1917 }; 1918 1919 static int 1920 pfctl_get_states_nl(struct pfctl_state_filter *filter, struct snl_state *ss, pfctl_get_state_fn f, void *arg) 1921 { 1922 SNL_VERIFY_PARSERS(all_parsers); 1923 int family_id = snl_get_genl_family(ss, PFNL_FAMILY_NAME); 1924 int ret; 1925 1926 struct nlmsghdr *hdr; 1927 struct snl_writer nw; 1928 1929 if (family_id == 0) 1930 return (ENOTSUP); 1931 1932 snl_init_writer(ss, &nw); 1933 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GETSTATES); 1934 hdr->nlmsg_flags |= NLM_F_DUMP; 1935 snl_add_msg_attr_string(&nw, PF_ST_IFNAME, filter->ifname); 1936 snl_add_msg_attr_u16(&nw, PF_ST_PROTO, filter->proto); 1937 snl_add_msg_attr_u8(&nw, PF_ST_AF, filter->af); 1938 snl_add_msg_attr_ip6(&nw, PF_ST_FILTER_ADDR, &filter->addr.v6); 1939 snl_add_msg_attr_ip6(&nw, PF_ST_FILTER_MASK, &filter->mask.v6); 1940 1941 hdr = snl_finalize_msg(&nw); 1942 if (hdr == NULL) 1943 return (ENOMEM); 1944 1945 uint32_t seq_id = hdr->nlmsg_seq; 1946 1947 snl_send_message(ss, hdr); 1948 1949 struct snl_errmsg_data e = {}; 1950 while ((hdr = snl_read_reply_multi(ss, seq_id, &e)) != NULL) { 1951 struct pfctl_state s; 1952 bzero(&s, sizeof(s)); 1953 if (!snl_parse_nlmsg(ss, hdr, &state_parser, &s)) 1954 continue; 1955 1956 s.key[1].af = s.key[0].af; 1957 s.key[1].proto = s.key[0].proto; 1958 1959 ret = f(&s, arg); 1960 if (ret != 0) 1961 return (ret); 1962 } 1963 1964 return (0); 1965 } 1966 1967 int 1968 pfctl_get_states_iter(pfctl_get_state_fn f, void *arg) 1969 { 1970 struct pfctl_state_filter filter = {}; 1971 return (pfctl_get_filtered_states_iter(&filter, f, arg)); 1972 } 1973 1974 int 1975 pfctl_get_filtered_states_iter(struct pfctl_state_filter *filter, pfctl_get_state_fn f, void *arg) 1976 { 1977 struct snl_state ss = {}; 1978 int error; 1979 1980 snl_init(&ss, NETLINK_GENERIC); 1981 error = pfctl_get_states_nl(filter, &ss, f, arg); 1982 snl_free(&ss); 1983 1984 return (error); 1985 } 1986 1987 static int 1988 pfctl_append_states(struct pfctl_state *s, void *arg) 1989 { 1990 struct pfctl_state *new; 1991 struct pfctl_states *states = (struct pfctl_states *)arg; 1992 1993 new = malloc(sizeof(*s)); 1994 if (new == NULL) 1995 return (ENOMEM); 1996 1997 memcpy(new, s, sizeof(*s)); 1998 1999 TAILQ_INSERT_TAIL(&states->states, new, entry); 2000 2001 return (0); 2002 } 2003 2004 int 2005 pfctl_get_states(int dev __unused, struct pfctl_states *states) 2006 { 2007 int ret; 2008 2009 bzero(states, sizeof(*states)); 2010 TAILQ_INIT(&states->states); 2011 2012 ret = pfctl_get_states_iter(pfctl_append_states, states); 2013 if (ret != 0) { 2014 pfctl_free_states(states); 2015 return (ret); 2016 } 2017 2018 return (0); 2019 } 2020 2021 void 2022 pfctl_free_states(struct pfctl_states *states) 2023 { 2024 struct pfctl_state *s, *tmp; 2025 2026 TAILQ_FOREACH_SAFE(s, &states->states, entry, tmp) { 2027 free(s); 2028 } 2029 2030 bzero(states, sizeof(*states)); 2031 } 2032 2033 struct pfctl_nl_clear_states { 2034 uint32_t killed; 2035 }; 2036 #define _OUT(_field) offsetof(struct pfctl_nl_clear_states, _field) 2037 static struct snl_attr_parser ap_clear_states[] = { 2038 { .type = PF_CS_KILLED, .off = _OUT(killed), .cb = snl_attr_get_uint32 }, 2039 }; 2040 static struct snl_field_parser fp_clear_states[] = {}; 2041 #undef _OUT 2042 SNL_DECLARE_PARSER(clear_states_parser, struct genlmsghdr, fp_clear_states, ap_clear_states); 2043 2044 static int 2045 _pfctl_clear_states_h(struct pfctl_handle *h, const struct pfctl_kill *kill, 2046 unsigned int *killed, int cmd) 2047 { 2048 struct snl_writer nw; 2049 struct snl_errmsg_data e = {}; 2050 struct pfctl_nl_clear_states attrs = {}; 2051 struct nlmsghdr *hdr; 2052 uint32_t seq_id; 2053 int family_id; 2054 2055 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME); 2056 if (family_id == 0) 2057 return (ENOTSUP); 2058 2059 snl_init_writer(&h->ss, &nw); 2060 hdr = snl_create_genl_msg_request(&nw, family_id, cmd); 2061 hdr->nlmsg_flags |= NLM_F_DUMP; 2062 2063 snl_add_msg_attr_u64(&nw, PF_CS_CMP_ID, kill->cmp.id); 2064 snl_add_msg_attr_u32(&nw, PF_CS_CMP_CREATORID, htonl(kill->cmp.creatorid)); 2065 snl_add_msg_attr_u8(&nw, PF_CS_CMP_DIR, kill->cmp.direction); 2066 snl_add_msg_attr_u8(&nw, PF_CS_AF, kill->af); 2067 snl_add_msg_attr_u8(&nw, PF_CS_PROTO, kill->proto); 2068 snl_add_msg_attr_rule_addr(&nw, PF_CS_SRC, &kill->src); 2069 snl_add_msg_attr_rule_addr(&nw, PF_CS_DST, &kill->dst); 2070 snl_add_msg_attr_rule_addr(&nw, PF_CS_RT_ADDR, &kill->rt_addr); 2071 snl_add_msg_attr_string(&nw, PF_CS_IFNAME, kill->ifname); 2072 snl_add_msg_attr_string(&nw, PF_CS_LABEL, kill->label); 2073 snl_add_msg_attr_bool(&nw, PF_CS_KILL_MATCH, kill->kill_match); 2074 snl_add_msg_attr_bool(&nw, PF_CS_NAT, kill->nat); 2075 2076 if ((hdr = snl_finalize_msg(&nw)) == NULL) 2077 return (ENXIO); 2078 2079 seq_id = hdr->nlmsg_seq; 2080 2081 if (! snl_send_message(&h->ss, hdr)) 2082 return (ENXIO); 2083 2084 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) { 2085 if (! snl_parse_nlmsg(&h->ss, hdr, &clear_states_parser, &attrs)) 2086 continue; 2087 } 2088 2089 if (killed) 2090 *killed = attrs.killed; 2091 2092 return (e.error); 2093 } 2094 2095 int 2096 pfctl_clear_states_h(struct pfctl_handle *h, const struct pfctl_kill *kill, 2097 unsigned int *killed) 2098 { 2099 return(_pfctl_clear_states_h(h, kill, killed, PFNL_CMD_CLRSTATES)); 2100 } 2101 2102 int 2103 pfctl_kill_states_h(struct pfctl_handle *h, const struct pfctl_kill *kill, 2104 unsigned int *killed) 2105 { 2106 return(_pfctl_clear_states_h(h, kill, killed, PFNL_CMD_KILLSTATES)); 2107 } 2108 2109 static int 2110 _pfctl_clear_states(int dev __unused, const struct pfctl_kill *kill, 2111 unsigned int *killed, uint64_t cmd) 2112 { 2113 struct pfctl_handle *h; 2114 int ret; 2115 2116 h = pfctl_open(PF_DEVICE); 2117 if (h == NULL) 2118 return (ENODEV); 2119 2120 ret = _pfctl_clear_states_h(h, kill, killed, cmd); 2121 pfctl_close(h); 2122 2123 return (ret); 2124 } 2125 2126 int 2127 pfctl_clear_states(int dev __unused, const struct pfctl_kill *kill, 2128 unsigned int *killed) 2129 { 2130 return (_pfctl_clear_states(dev, kill, killed, PFNL_CMD_CLRSTATES)); 2131 } 2132 2133 int 2134 pfctl_kill_states(int dev __unused, const struct pfctl_kill *kill, unsigned int *killed) 2135 { 2136 return (_pfctl_clear_states(dev, kill, killed, PFNL_CMD_KILLSTATES)); 2137 } 2138 2139 int 2140 pfctl_clear_rules(int dev, const char *anchorname) 2141 { 2142 struct pfioc_trans trans; 2143 struct pfioc_trans_e transe[2]; 2144 int ret; 2145 2146 bzero(&trans, sizeof(trans)); 2147 bzero(&transe, sizeof(transe)); 2148 2149 transe[0].rs_num = PF_RULESET_SCRUB; 2150 if (strlcpy(transe[0].anchor, anchorname, sizeof(transe[0].anchor)) 2151 >= sizeof(transe[0].anchor)) 2152 return (E2BIG); 2153 2154 transe[1].rs_num = PF_RULESET_FILTER; 2155 if (strlcpy(transe[1].anchor, anchorname, sizeof(transe[1].anchor)) 2156 >= sizeof(transe[1].anchor)) 2157 return (E2BIG); 2158 2159 trans.size = 2; 2160 trans.esize = sizeof(transe[0]); 2161 trans.array = transe; 2162 2163 ret = ioctl(dev, DIOCXBEGIN, &trans); 2164 if (ret != 0) 2165 return (ret); 2166 return ioctl(dev, DIOCXCOMMIT, &trans); 2167 } 2168 2169 int 2170 pfctl_clear_nat(int dev, const char *anchorname) 2171 { 2172 struct pfioc_trans trans; 2173 struct pfioc_trans_e transe[3]; 2174 int ret; 2175 2176 bzero(&trans, sizeof(trans)); 2177 bzero(&transe, sizeof(transe)); 2178 2179 transe[0].rs_num = PF_RULESET_NAT; 2180 if (strlcpy(transe[0].anchor, anchorname, sizeof(transe[0].anchor)) 2181 >= sizeof(transe[0].anchor)) 2182 return (E2BIG); 2183 2184 transe[1].rs_num = PF_RULESET_BINAT; 2185 if (strlcpy(transe[1].anchor, anchorname, sizeof(transe[1].anchor)) 2186 >= sizeof(transe[0].anchor)) 2187 return (E2BIG); 2188 2189 transe[2].rs_num = PF_RULESET_RDR; 2190 if (strlcpy(transe[2].anchor, anchorname, sizeof(transe[2].anchor)) 2191 >= sizeof(transe[2].anchor)) 2192 return (E2BIG); 2193 2194 trans.size = 3; 2195 trans.esize = sizeof(transe[0]); 2196 trans.array = transe; 2197 2198 ret = ioctl(dev, DIOCXBEGIN, &trans); 2199 if (ret != 0) 2200 return (ret); 2201 return ioctl(dev, DIOCXCOMMIT, &trans); 2202 } 2203 int 2204 pfctl_clear_eth_rules(int dev, const char *anchorname) 2205 { 2206 struct pfioc_trans trans; 2207 struct pfioc_trans_e transe; 2208 int ret; 2209 2210 bzero(&trans, sizeof(trans)); 2211 bzero(&transe, sizeof(transe)); 2212 2213 transe.rs_num = PF_RULESET_ETH; 2214 if (strlcpy(transe.anchor, anchorname, sizeof(transe.anchor)) 2215 >= sizeof(transe.anchor)) 2216 return (E2BIG); 2217 2218 trans.size = 1; 2219 trans.esize = sizeof(transe); 2220 trans.array = &transe; 2221 2222 ret = ioctl(dev, DIOCXBEGIN, &trans); 2223 if (ret != 0) 2224 return (ret); 2225 return ioctl(dev, DIOCXCOMMIT, &trans); 2226 } 2227 2228 static int 2229 _pfctl_get_limit(int dev, const int index, uint *limit) 2230 { 2231 struct pfioc_limit pl; 2232 2233 bzero(&pl, sizeof(pl)); 2234 pl.index = index; 2235 2236 if (ioctl(dev, DIOCGETLIMIT, &pl) == -1) 2237 return (errno); 2238 2239 *limit = pl.limit; 2240 2241 return (0); 2242 } 2243 2244 int 2245 pfctl_set_syncookies(int dev, const struct pfctl_syncookies *s) 2246 { 2247 struct pfioc_nv nv; 2248 nvlist_t *nvl; 2249 int ret; 2250 uint state_limit; 2251 uint64_t lim, hi, lo; 2252 2253 ret = _pfctl_get_limit(dev, PF_LIMIT_STATES, &state_limit); 2254 if (ret != 0) 2255 return (ret); 2256 2257 lim = state_limit; 2258 hi = lim * s->highwater / 100; 2259 lo = lim * s->lowwater / 100; 2260 2261 if (lo == hi) 2262 hi++; 2263 2264 nvl = nvlist_create(0); 2265 2266 nvlist_add_bool(nvl, "enabled", s->mode != PFCTL_SYNCOOKIES_NEVER); 2267 nvlist_add_bool(nvl, "adaptive", s->mode == PFCTL_SYNCOOKIES_ADAPTIVE); 2268 nvlist_add_number(nvl, "highwater", hi); 2269 nvlist_add_number(nvl, "lowwater", lo); 2270 2271 nv.data = nvlist_pack(nvl, &nv.len); 2272 nv.size = nv.len; 2273 nvlist_destroy(nvl); 2274 nvl = NULL; 2275 2276 ret = ioctl(dev, DIOCSETSYNCOOKIES, &nv); 2277 2278 free(nv.data); 2279 return (ret); 2280 } 2281 2282 int 2283 pfctl_get_syncookies(int dev, struct pfctl_syncookies *s) 2284 { 2285 nvlist_t *nvl; 2286 int ret; 2287 uint state_limit; 2288 bool enabled, adaptive; 2289 2290 ret = _pfctl_get_limit(dev, PF_LIMIT_STATES, &state_limit); 2291 if (ret != 0) 2292 return (ret); 2293 2294 bzero(s, sizeof(*s)); 2295 2296 nvl = nvlist_create(0); 2297 2298 if ((ret = pfctl_do_ioctl(dev, DIOCGETSYNCOOKIES, 256, &nvl)) != 0) { 2299 ret = errno; 2300 goto out; 2301 } 2302 2303 enabled = nvlist_get_bool(nvl, "enabled"); 2304 adaptive = nvlist_get_bool(nvl, "adaptive"); 2305 2306 if (enabled) { 2307 if (adaptive) 2308 s->mode = PFCTL_SYNCOOKIES_ADAPTIVE; 2309 else 2310 s->mode = PFCTL_SYNCOOKIES_ALWAYS; 2311 } else { 2312 s->mode = PFCTL_SYNCOOKIES_NEVER; 2313 } 2314 2315 s->highwater = nvlist_get_number(nvl, "highwater") * 100 / state_limit; 2316 s->lowwater = nvlist_get_number(nvl, "lowwater") * 100 / state_limit; 2317 s->halfopen_states = nvlist_get_number(nvl, "halfopen_states"); 2318 2319 out: 2320 nvlist_destroy(nvl); 2321 return (ret); 2322 } 2323 2324 int 2325 pfctl_table_add_addrs(int dev, struct pfr_table *tbl, struct pfr_addr 2326 *addr, int size, int *nadd, int flags) 2327 { 2328 struct pfioc_table io; 2329 2330 if (tbl == NULL || size < 0 || (size && addr == NULL)) { 2331 return (EINVAL); 2332 } 2333 bzero(&io, sizeof io); 2334 io.pfrio_flags = flags; 2335 io.pfrio_table = *tbl; 2336 io.pfrio_buffer = addr; 2337 io.pfrio_esize = sizeof(*addr); 2338 io.pfrio_size = size; 2339 2340 if (ioctl(dev, DIOCRADDADDRS, &io)) 2341 return (errno); 2342 if (nadd != NULL) 2343 *nadd = io.pfrio_nadd; 2344 return (0); 2345 } 2346 2347 int 2348 pfctl_table_del_addrs(int dev, struct pfr_table *tbl, struct pfr_addr 2349 *addr, int size, int *ndel, int flags) 2350 { 2351 struct pfioc_table io; 2352 2353 if (tbl == NULL || size < 0 || (size && addr == NULL)) { 2354 return (EINVAL); 2355 } 2356 bzero(&io, sizeof io); 2357 io.pfrio_flags = flags; 2358 io.pfrio_table = *tbl; 2359 io.pfrio_buffer = addr; 2360 io.pfrio_esize = sizeof(*addr); 2361 io.pfrio_size = size; 2362 2363 if (ioctl(dev, DIOCRDELADDRS, &io)) 2364 return (errno); 2365 if (ndel != NULL) 2366 *ndel = io.pfrio_ndel; 2367 return (0); 2368 } 2369 2370 int 2371 pfctl_table_set_addrs(int dev, struct pfr_table *tbl, struct pfr_addr 2372 *addr, int size, int *size2, int *nadd, int *ndel, int *nchange, int flags) 2373 { 2374 struct pfioc_table io; 2375 2376 if (tbl == NULL || size < 0 || (size && addr == NULL)) { 2377 return (EINVAL); 2378 } 2379 bzero(&io, sizeof io); 2380 io.pfrio_flags = flags; 2381 io.pfrio_table = *tbl; 2382 io.pfrio_buffer = addr; 2383 io.pfrio_esize = sizeof(*addr); 2384 io.pfrio_size = size; 2385 io.pfrio_size2 = (size2 != NULL) ? *size2 : 0; 2386 if (ioctl(dev, DIOCRSETADDRS, &io)) 2387 return (-1); 2388 if (nadd != NULL) 2389 *nadd = io.pfrio_nadd; 2390 if (ndel != NULL) 2391 *ndel = io.pfrio_ndel; 2392 if (nchange != NULL) 2393 *nchange = io.pfrio_nchange; 2394 if (size2 != NULL) 2395 *size2 = io.pfrio_size2; 2396 return (0); 2397 } 2398 2399 int pfctl_table_get_addrs(int dev, struct pfr_table *tbl, struct pfr_addr *addr, 2400 int *size, int flags) 2401 { 2402 struct pfioc_table io; 2403 2404 if (tbl == NULL || size == NULL || *size < 0 || 2405 (*size && addr == NULL)) { 2406 return (EINVAL); 2407 } 2408 bzero(&io, sizeof io); 2409 io.pfrio_flags = flags; 2410 io.pfrio_table = *tbl; 2411 io.pfrio_buffer = addr; 2412 io.pfrio_esize = sizeof(*addr); 2413 io.pfrio_size = *size; 2414 if (ioctl(dev, DIOCRGETADDRS, &io)) 2415 return (-1); 2416 *size = io.pfrio_size; 2417 return (0); 2418 } 2419 2420 int 2421 pfctl_set_statusif(struct pfctl_handle *h, const char *ifname) 2422 { 2423 struct snl_writer nw; 2424 struct snl_errmsg_data e = {}; 2425 struct nlmsghdr *hdr; 2426 uint32_t seq_id; 2427 int family_id; 2428 2429 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME); 2430 if (family_id == 0) 2431 return (ENOTSUP); 2432 2433 snl_init_writer(&h->ss, &nw); 2434 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_SET_STATUSIF); 2435 2436 snl_add_msg_attr_string(&nw, PF_SS_IFNAME, ifname); 2437 2438 if ((hdr = snl_finalize_msg(&nw)) == NULL) 2439 return (ENXIO); 2440 2441 seq_id = hdr->nlmsg_seq; 2442 2443 if (! snl_send_message(&h->ss, hdr)) 2444 return (ENXIO); 2445 2446 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) { 2447 } 2448 2449 return (e.error); 2450 } 2451 2452 #define _IN(_field) offsetof(struct genlmsghdr, _field) 2453 #define _OUT(_field) offsetof(struct pfctl_natlook, _field) 2454 static struct snl_attr_parser ap_natlook[] = { 2455 { .type = PF_NL_SRC_ADDR, .off = _OUT(saddr), .cb = snl_attr_get_in6_addr }, 2456 { .type = PF_NL_DST_ADDR, .off = _OUT(daddr), .cb = snl_attr_get_in6_addr }, 2457 { .type = PF_NL_SRC_PORT, .off = _OUT(sport), .cb = snl_attr_get_uint16 }, 2458 { .type = PF_NL_DST_PORT, .off = _OUT(dport), .cb = snl_attr_get_uint16 }, 2459 }; 2460 static struct snl_field_parser fp_natlook[] = {}; 2461 #undef _IN 2462 #undef _OUT 2463 SNL_DECLARE_PARSER(natlook_parser, struct genlmsghdr, fp_natlook, ap_natlook); 2464 2465 int 2466 pfctl_natlook(struct pfctl_handle *h, const struct pfctl_natlook_key *k, 2467 struct pfctl_natlook *r) 2468 { 2469 struct snl_writer nw; 2470 struct snl_errmsg_data e = {}; 2471 struct nlmsghdr *hdr; 2472 uint32_t seq_id; 2473 int family_id; 2474 2475 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME); 2476 if (family_id == 0) 2477 return (ENOTSUP); 2478 2479 snl_init_writer(&h->ss, &nw); 2480 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_NATLOOK); 2481 hdr->nlmsg_flags |= NLM_F_DUMP; 2482 2483 snl_add_msg_attr_u8(&nw, PF_NL_AF, k->af); 2484 snl_add_msg_attr_u8(&nw, PF_NL_DIRECTION, k->direction); 2485 snl_add_msg_attr_u8(&nw, PF_NL_PROTO, k->proto); 2486 snl_add_msg_attr_ip6(&nw, PF_NL_SRC_ADDR, &k->saddr.v6); 2487 snl_add_msg_attr_ip6(&nw, PF_NL_DST_ADDR, &k->daddr.v6); 2488 snl_add_msg_attr_u16(&nw, PF_NL_SRC_PORT, k->sport); 2489 snl_add_msg_attr_u16(&nw, PF_NL_DST_PORT, k->dport); 2490 2491 if ((hdr = snl_finalize_msg(&nw)) == NULL) 2492 return (ENXIO); 2493 2494 seq_id = hdr->nlmsg_seq; 2495 2496 if (! snl_send_message(&h->ss, hdr)) 2497 return (ENXIO); 2498 2499 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) { 2500 if (! snl_parse_nlmsg(&h->ss, hdr, &natlook_parser, r)) 2501 continue; 2502 } 2503 2504 return (e.error); 2505 } 2506 2507 int 2508 pfctl_set_debug(struct pfctl_handle *h, uint32_t level) 2509 { 2510 struct snl_writer nw; 2511 struct snl_errmsg_data e = {}; 2512 struct nlmsghdr *hdr; 2513 uint32_t seq_id; 2514 int family_id; 2515 2516 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME); 2517 if (family_id == 0) 2518 return (ENOTSUP); 2519 2520 snl_init_writer(&h->ss, &nw); 2521 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_SET_DEBUG); 2522 2523 snl_add_msg_attr_u32(&nw, PF_SD_LEVEL, level); 2524 2525 if ((hdr = snl_finalize_msg(&nw)) == NULL) 2526 return (ENXIO); 2527 2528 seq_id = hdr->nlmsg_seq; 2529 2530 if (! snl_send_message(&h->ss, hdr)) 2531 return (ENXIO); 2532 2533 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) { 2534 } 2535 2536 return (e.error); 2537 } 2538 2539 int 2540 pfctl_set_timeout(struct pfctl_handle *h, uint32_t timeout, uint32_t seconds) 2541 { 2542 struct snl_writer nw; 2543 struct snl_errmsg_data e = {}; 2544 struct nlmsghdr *hdr; 2545 uint32_t seq_id; 2546 int family_id; 2547 2548 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME); 2549 if (family_id == 0) 2550 return (ENOTSUP); 2551 2552 snl_init_writer(&h->ss, &nw); 2553 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_SET_TIMEOUT); 2554 2555 snl_add_msg_attr_u32(&nw, PF_TO_TIMEOUT, timeout); 2556 snl_add_msg_attr_u32(&nw, PF_TO_SECONDS, seconds); 2557 2558 if ((hdr = snl_finalize_msg(&nw)) == NULL) 2559 return (ENXIO); 2560 2561 seq_id = hdr->nlmsg_seq; 2562 2563 if (! snl_send_message(&h->ss, hdr)) 2564 return (ENXIO); 2565 2566 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) { 2567 } 2568 2569 return (e.error); 2570 } 2571 2572 struct pfctl_nl_timeout { 2573 uint32_t seconds; 2574 }; 2575 #define _OUT(_field) offsetof(struct pfctl_nl_timeout, _field) 2576 static struct snl_attr_parser ap_get_timeout[] = { 2577 { .type = PF_TO_SECONDS, .off = _OUT(seconds), .cb = snl_attr_get_uint32 }, 2578 }; 2579 static struct snl_field_parser fp_get_timeout[] = {}; 2580 #undef _OUT 2581 SNL_DECLARE_PARSER(get_timeout_parser, struct genlmsghdr, fp_get_timeout, ap_get_timeout); 2582 2583 int 2584 pfctl_get_timeout(struct pfctl_handle *h, uint32_t timeout, uint32_t *seconds) 2585 { 2586 struct snl_writer nw; 2587 struct pfctl_nl_timeout to = {}; 2588 struct snl_errmsg_data e = {}; 2589 struct nlmsghdr *hdr; 2590 uint32_t seq_id; 2591 int family_id; 2592 2593 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME); 2594 if (family_id == 0) 2595 return (ENOTSUP); 2596 2597 snl_init_writer(&h->ss, &nw); 2598 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GET_TIMEOUT); 2599 hdr->nlmsg_flags |= NLM_F_DUMP; 2600 2601 snl_add_msg_attr_u32(&nw, PF_TO_TIMEOUT, timeout); 2602 2603 if ((hdr = snl_finalize_msg(&nw)) == NULL) 2604 return (ENXIO); 2605 2606 seq_id = hdr->nlmsg_seq; 2607 2608 if (! snl_send_message(&h->ss, hdr)) 2609 return (ENXIO); 2610 2611 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) { 2612 if (! snl_parse_nlmsg(&h->ss, hdr, &get_timeout_parser, &to)) 2613 continue; 2614 } 2615 2616 if (seconds != NULL) 2617 *seconds = to.seconds; 2618 2619 return (e.error); 2620 } 2621 2622 int 2623 pfctl_set_limit(struct pfctl_handle *h, const int index, const uint limit) 2624 { 2625 struct snl_writer nw; 2626 struct snl_errmsg_data e = {}; 2627 struct nlmsghdr *hdr; 2628 uint32_t seq_id; 2629 int family_id; 2630 2631 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME); 2632 if (family_id == 0) 2633 return (ENOTSUP); 2634 2635 snl_init_writer(&h->ss, &nw); 2636 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_SET_LIMIT); 2637 2638 snl_add_msg_attr_u32(&nw, PF_LI_INDEX, index); 2639 snl_add_msg_attr_u32(&nw, PF_LI_LIMIT, limit); 2640 2641 if ((hdr = snl_finalize_msg(&nw)) == NULL) 2642 return (ENXIO); 2643 2644 seq_id = hdr->nlmsg_seq; 2645 2646 if (! snl_send_message(&h->ss, hdr)) 2647 return (ENXIO); 2648 2649 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) { 2650 } 2651 2652 return (e.error); 2653 } 2654 2655 struct pfctl_nl_limit { 2656 unsigned int limit; 2657 }; 2658 #define _OUT(_field) offsetof(struct pfctl_nl_limit, _field) 2659 static struct snl_attr_parser ap_get_limit[] = { 2660 { .type = PF_LI_LIMIT, .off = _OUT(limit), .cb = snl_attr_get_uint32 }, 2661 }; 2662 static struct snl_field_parser fp_get_limit[] = {}; 2663 #undef _OUT 2664 SNL_DECLARE_PARSER(get_limit_parser, struct genlmsghdr, fp_get_limit, ap_get_limit); 2665 2666 int 2667 pfctl_get_limit(struct pfctl_handle *h, const int index, uint *limit) 2668 { 2669 struct snl_writer nw; 2670 struct pfctl_nl_limit li = {}; 2671 struct snl_errmsg_data e = {}; 2672 struct nlmsghdr *hdr; 2673 uint32_t seq_id; 2674 int family_id; 2675 2676 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME); 2677 if (family_id == 0) 2678 return (ENOTSUP); 2679 2680 snl_init_writer(&h->ss, &nw); 2681 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GET_LIMIT); 2682 hdr->nlmsg_flags |= NLM_F_DUMP; 2683 2684 snl_add_msg_attr_u32(&nw, PF_LI_INDEX, index); 2685 2686 if ((hdr = snl_finalize_msg(&nw)) == NULL) 2687 return (ENXIO); 2688 2689 seq_id = hdr->nlmsg_seq; 2690 2691 if (! snl_send_message(&h->ss, hdr)) 2692 return (ENXIO); 2693 2694 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) { 2695 if (! snl_parse_nlmsg(&h->ss, hdr, &get_limit_parser, &li)) 2696 continue; 2697 } 2698 2699 if (limit != NULL) 2700 *limit = li.limit; 2701 2702 return (e.error); 2703 } 2704 2705 struct pfctl_nl_begin_addrs { 2706 uint32_t ticket; 2707 }; 2708 #define _OUT(_field) offsetof(struct pfctl_nl_begin_addrs, _field) 2709 static struct snl_attr_parser ap_begin_addrs[] = { 2710 { .type = PF_BA_TICKET, .off = _OUT(ticket), .cb = snl_attr_get_uint32 }, 2711 }; 2712 static struct snl_field_parser fp_begin_addrs[] = {}; 2713 #undef _OUT 2714 SNL_DECLARE_PARSER(begin_addrs_parser, struct genlmsghdr, fp_begin_addrs, ap_begin_addrs); 2715 2716 int 2717 pfctl_begin_addrs(struct pfctl_handle *h, uint32_t *ticket) 2718 { 2719 struct snl_writer nw; 2720 struct pfctl_nl_begin_addrs attrs = {}; 2721 struct snl_errmsg_data e = {}; 2722 struct nlmsghdr *hdr; 2723 uint32_t seq_id; 2724 int family_id; 2725 2726 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME); 2727 if (family_id == 0) 2728 return (ENOTSUP); 2729 2730 snl_init_writer(&h->ss, &nw); 2731 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_BEGIN_ADDRS); 2732 hdr->nlmsg_flags |= NLM_F_DUMP; 2733 2734 if ((hdr = snl_finalize_msg(&nw)) == NULL) 2735 return (ENXIO); 2736 2737 seq_id = hdr->nlmsg_seq; 2738 2739 if (! snl_send_message(&h->ss, hdr)) 2740 return (ENXIO); 2741 2742 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) { 2743 if (! snl_parse_nlmsg(&h->ss, hdr, &begin_addrs_parser, &attrs)) 2744 continue; 2745 } 2746 2747 if (ticket != NULL) 2748 *ticket = attrs.ticket; 2749 2750 return (e.error); 2751 } 2752 2753 int 2754 pfctl_add_addr(struct pfctl_handle *h, const struct pfioc_pooladdr *pa) 2755 { 2756 struct snl_writer nw; 2757 struct snl_errmsg_data e = {}; 2758 struct nlmsghdr *hdr; 2759 uint32_t seq_id; 2760 int family_id; 2761 2762 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME); 2763 if (family_id == 0) 2764 return (ENOTSUP); 2765 2766 snl_init_writer(&h->ss, &nw); 2767 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_ADD_ADDR); 2768 2769 snl_add_msg_attr_u32(&nw, PF_AA_ACTION, pa->action); 2770 snl_add_msg_attr_u32(&nw, PF_AA_TICKET, pa->ticket); 2771 snl_add_msg_attr_u32(&nw, PF_AA_NR, pa->nr); 2772 snl_add_msg_attr_u32(&nw, PF_AA_R_NUM, pa->r_num); 2773 snl_add_msg_attr_u8(&nw, PF_AA_R_ACTION, pa->r_action); 2774 snl_add_msg_attr_u8(&nw, PF_AA_R_LAST, pa->r_last); 2775 snl_add_msg_attr_u8(&nw, PF_AA_AF, pa->af); 2776 snl_add_msg_attr_string(&nw, PF_AA_ANCHOR, pa->anchor); 2777 snl_add_msg_attr_pool_addr(&nw, PF_AA_ADDR, &pa->addr); 2778 2779 if ((hdr = snl_finalize_msg(&nw)) == NULL) 2780 return (ENXIO); 2781 2782 seq_id = hdr->nlmsg_seq; 2783 2784 if (! snl_send_message(&h->ss, hdr)) 2785 return (ENXIO); 2786 2787 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) { 2788 } 2789 2790 return (e.error); 2791 } 2792 2793 static const struct snl_attr_parser ap_get_addrs[] = { 2794 { .type = PF_AA_NR, .off = 0, .cb = snl_attr_get_uint32 }, 2795 }; 2796 static struct snl_field_parser fp_get_addrs[] = {}; 2797 SNL_DECLARE_PARSER(get_addrs_parser, struct genlmsghdr, fp_get_addrs, ap_get_addrs); 2798 2799 int 2800 pfctl_get_addrs(struct pfctl_handle *h, uint32_t ticket, uint32_t r_num, 2801 uint8_t r_action, const char *anchor, uint32_t *nr) 2802 { 2803 struct snl_writer nw; 2804 struct snl_errmsg_data e = {}; 2805 struct nlmsghdr *hdr; 2806 uint32_t seq_id; 2807 int family_id; 2808 2809 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME); 2810 if (family_id == 0) 2811 return (ENOTSUP); 2812 2813 snl_init_writer(&h->ss, &nw); 2814 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GET_ADDRS); 2815 2816 snl_add_msg_attr_u32(&nw, PF_AA_TICKET, ticket); 2817 snl_add_msg_attr_u32(&nw, PF_AA_R_NUM, r_num); 2818 snl_add_msg_attr_u8(&nw, PF_AA_R_ACTION, r_action); 2819 snl_add_msg_attr_string(&nw, PF_AA_ANCHOR, anchor); 2820 2821 if ((hdr = snl_finalize_msg(&nw)) == NULL) 2822 return (ENXIO); 2823 2824 seq_id = hdr->nlmsg_seq; 2825 2826 if (! snl_send_message(&h->ss, hdr)) 2827 return (ENXIO); 2828 2829 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) { 2830 if (! snl_parse_nlmsg(&h->ss, hdr, &get_addrs_parser, nr)) 2831 continue; 2832 } 2833 2834 return (e.error); 2835 } 2836 2837 #define _OUT(_field) offsetof(struct pf_pooladdr, _field) 2838 static const struct snl_attr_parser ap_pool_addr[] = { 2839 { .type = PF_PA_ADDR, .off = _OUT(addr), .arg = &addr_wrap_parser, .cb = snl_attr_get_nested }, 2840 { .type = PF_PA_IFNAME, .off = _OUT(ifname), .arg_u32 = IFNAMSIZ, .cb = snl_attr_copy_string }, 2841 }; 2842 SNL_DECLARE_ATTR_PARSER(pool_addr_parser, ap_pool_addr); 2843 #undef _OUT 2844 2845 #define _OUT(_field) offsetof(struct pfioc_pooladdr, _field) 2846 static const struct snl_attr_parser ap_get_addr[] = { 2847 { .type = PF_AA_ACTION, .off = _OUT(action), .cb = snl_attr_get_uint32 }, 2848 { .type = PF_AA_TICKET, .off = _OUT(ticket), .cb = snl_attr_get_uint32 }, 2849 { .type = PF_AA_NR, .off = _OUT(nr), .cb = snl_attr_get_uint32 }, 2850 { .type = PF_AA_R_NUM, .off = _OUT(r_num), .cb = snl_attr_get_uint32 }, 2851 { .type = PF_AA_R_ACTION, .off = _OUT(r_action), .cb = snl_attr_get_uint8 }, 2852 { .type = PF_AA_R_LAST, .off = _OUT(r_last), .cb = snl_attr_get_uint8 }, 2853 { .type = PF_AA_AF, .off = _OUT(af), .cb = snl_attr_get_uint8 }, 2854 { .type = PF_AA_ANCHOR, .off = _OUT(anchor), .arg_u32 = MAXPATHLEN, .cb = snl_attr_copy_string }, 2855 { .type = PF_AA_ADDR, .off = _OUT(addr), .arg = &pool_addr_parser, .cb = snl_attr_get_nested }, 2856 }; 2857 static struct snl_field_parser fp_get_addr[] = {}; 2858 SNL_DECLARE_PARSER(get_addr_parser, struct genlmsghdr, fp_get_addr, ap_get_addr); 2859 #undef _OUT 2860 2861 int 2862 pfctl_get_addr(struct pfctl_handle *h, uint32_t ticket, uint32_t r_num, 2863 uint8_t r_action, const char *anchor, uint32_t nr, struct pfioc_pooladdr *pa) 2864 { 2865 struct snl_writer nw; 2866 struct snl_errmsg_data e = {}; 2867 struct nlmsghdr *hdr; 2868 uint32_t seq_id; 2869 int family_id; 2870 2871 family_id =snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME); 2872 if (family_id == 0) 2873 return (ENOTSUP); 2874 2875 snl_init_writer(&h->ss, &nw); 2876 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GET_ADDR); 2877 2878 snl_add_msg_attr_u32(&nw, PF_AA_TICKET, ticket); 2879 snl_add_msg_attr_u32(&nw, PF_AA_R_NUM, r_num); 2880 snl_add_msg_attr_u8(&nw, PF_AA_R_ACTION, r_action); 2881 snl_add_msg_attr_string(&nw, PF_AA_ANCHOR, anchor); 2882 snl_add_msg_attr_u32(&nw, PF_AA_NR, nr); 2883 2884 if ((hdr = snl_finalize_msg(&nw)) == NULL) 2885 return (ENXIO); 2886 2887 seq_id = hdr->nlmsg_seq; 2888 2889 if (! snl_send_message(&h->ss, hdr)) 2890 return (ENXIO); 2891 2892 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) { 2893 if (! snl_parse_nlmsg(&h->ss, hdr, &get_addr_parser, pa)) 2894 continue; 2895 } 2896 2897 return (0); 2898 } 2899