1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause 3 * 4 * Copyright (c) 2021 Rubicon Communications, LLC (Netgate) 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 11 * - Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * - Redistributions in binary form must reproduce the above 14 * copyright notice, this list of conditions and the following 15 * disclaimer in the documentation and/or other materials provided 16 * with the distribution. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 20 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 21 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE 22 * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 23 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 24 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 25 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER 26 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN 28 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 #include <sys/cdefs.h> 33 34 #include <sys/ioctl.h> 35 #include <sys/nv.h> 36 #include <sys/queue.h> 37 #include <sys/types.h> 38 39 #include <net/if.h> 40 #include <net/pfvar.h> 41 #include <netinet/in.h> 42 43 #include <netpfil/pf/pf_nl.h> 44 #include <netlink/netlink.h> 45 #include <netlink/netlink_generic.h> 46 #include <netlink/netlink_snl.h> 47 #include <netlink/netlink_snl_generic.h> 48 #include <netlink/netlink_snl_route.h> 49 50 #include <assert.h> 51 #include <err.h> 52 #include <errno.h> 53 #include <fcntl.h> 54 #include <stdlib.h> 55 #include <string.h> 56 57 #include "libpfctl.h" 58 59 struct pfctl_handle { 60 int fd; 61 struct snl_state ss; 62 }; 63 64 const char* PFCTL_SYNCOOKIES_MODE_NAMES[] = { 65 "never", 66 "always", 67 "adaptive" 68 }; 69 70 static int _pfctl_clear_states(int , const struct pfctl_kill *, 71 unsigned int *, uint64_t); 72 73 struct pfctl_handle * 74 pfctl_open(const char *pf_device) 75 { 76 struct pfctl_handle *h; 77 78 h = calloc(1, sizeof(struct pfctl_handle)); 79 h->fd = -1; 80 81 h->fd = open(pf_device, O_RDWR); 82 if (h->fd < 0) 83 goto error; 84 85 if (!snl_init(&h->ss, NETLINK_GENERIC)) 86 goto error; 87 88 return (h); 89 error: 90 close(h->fd); 91 snl_free(&h->ss); 92 free(h); 93 94 return (NULL); 95 } 96 97 void 98 pfctl_close(struct pfctl_handle *h) 99 { 100 close(h->fd); 101 snl_free(&h->ss); 102 free(h); 103 } 104 105 int 106 pfctl_fd(struct pfctl_handle *h) 107 { 108 return (h->fd); 109 } 110 111 static int 112 pfctl_do_netlink_cmd(struct pfctl_handle *h, uint cmd) 113 { 114 struct snl_errmsg_data e = {}; 115 struct snl_writer nw; 116 struct nlmsghdr *hdr; 117 uint32_t seq_id; 118 int family_id; 119 120 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME); 121 if (family_id == 0) 122 return (ENOTSUP); 123 124 snl_init_writer(&h->ss, &nw); 125 hdr = snl_create_genl_msg_request(&nw, family_id, cmd); 126 127 hdr = snl_finalize_msg(&nw); 128 if (hdr == NULL) 129 return (ENOMEM); 130 seq_id = hdr->nlmsg_seq; 131 132 snl_send_message(&h->ss, hdr); 133 134 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) { 135 } 136 137 return (e.error); 138 } 139 140 static int 141 pfctl_do_ioctl(int dev, uint cmd, size_t size, nvlist_t **nvl) 142 { 143 struct pfioc_nv nv; 144 void *data; 145 size_t nvlen; 146 int ret; 147 148 data = nvlist_pack(*nvl, &nvlen); 149 if (nvlen > size) 150 size = nvlen; 151 152 retry: 153 nv.data = malloc(size); 154 if (nv.data == NULL) { 155 ret = ENOMEM; 156 goto out; 157 } 158 159 memcpy(nv.data, data, nvlen); 160 161 nv.len = nvlen; 162 nv.size = size; 163 164 ret = ioctl(dev, cmd, &nv); 165 if (ret == -1 && errno == ENOSPC) { 166 size *= 2; 167 free(nv.data); 168 goto retry; 169 } 170 171 nvlist_destroy(*nvl); 172 *nvl = NULL; 173 174 if (ret == 0) { 175 *nvl = nvlist_unpack(nv.data, nv.len, 0); 176 if (*nvl == NULL) { 177 ret = EIO; 178 goto out; 179 } 180 } else { 181 ret = errno; 182 } 183 184 out: 185 free(data); 186 free(nv.data); 187 188 return (ret); 189 } 190 191 static void 192 pf_nvuint_8_array(const nvlist_t *nvl, const char *name, size_t maxelems, 193 uint8_t *numbers, size_t *nelems) 194 { 195 const uint64_t *tmp; 196 size_t elems; 197 198 tmp = nvlist_get_number_array(nvl, name, &elems); 199 assert(elems <= maxelems); 200 201 for (size_t i = 0; i < elems; i++) 202 numbers[i] = tmp[i]; 203 204 if (nelems) 205 *nelems = elems; 206 } 207 208 static void 209 pf_nvuint_16_array(const nvlist_t *nvl, const char *name, size_t maxelems, 210 uint16_t *numbers, size_t *nelems) 211 { 212 const uint64_t *tmp; 213 size_t elems; 214 215 tmp = nvlist_get_number_array(nvl, name, &elems); 216 assert(elems <= maxelems); 217 218 for (size_t i = 0; i < elems; i++) 219 numbers[i] = tmp[i]; 220 221 if (nelems) 222 *nelems = elems; 223 } 224 225 static void 226 pf_nvuint_32_array(const nvlist_t *nvl, const char *name, size_t maxelems, 227 uint32_t *numbers, size_t *nelems) 228 { 229 const uint64_t *tmp; 230 size_t elems; 231 232 tmp = nvlist_get_number_array(nvl, name, &elems); 233 234 for (size_t i = 0; i < elems && i < maxelems; i++) 235 numbers[i] = tmp[i]; 236 237 if (nelems) 238 *nelems = elems; 239 } 240 241 static void 242 pf_nvuint_64_array(const nvlist_t *nvl, const char *name, size_t maxelems, 243 uint64_t *numbers, size_t *nelems) 244 { 245 const uint64_t *tmp; 246 size_t elems; 247 248 tmp = nvlist_get_number_array(nvl, name, &elems); 249 assert(elems <= maxelems); 250 251 for (size_t i = 0; i < elems; i++) 252 numbers[i] = tmp[i]; 253 254 if (nelems) 255 *nelems = elems; 256 } 257 258 int 259 pfctl_startstop(struct pfctl_handle *h, int start) 260 { 261 return (pfctl_do_netlink_cmd(h, start ? PFNL_CMD_START : PFNL_CMD_STOP)); 262 } 263 264 static void 265 _pfctl_get_status_counters(const nvlist_t *nvl, 266 struct pfctl_status_counters *counters) 267 { 268 const uint64_t *ids, *counts; 269 const char *const *names; 270 size_t id_len, counter_len, names_len; 271 272 ids = nvlist_get_number_array(nvl, "ids", &id_len); 273 counts = nvlist_get_number_array(nvl, "counters", &counter_len); 274 names = nvlist_get_string_array(nvl, "names", &names_len); 275 assert(id_len == counter_len); 276 assert(counter_len == names_len); 277 278 TAILQ_INIT(counters); 279 280 for (size_t i = 0; i < id_len; i++) { 281 struct pfctl_status_counter *c; 282 283 c = malloc(sizeof(*c)); 284 if (c == NULL) 285 continue; 286 287 c->id = ids[i]; 288 c->counter = counts[i]; 289 c->name = strdup(names[i]); 290 291 TAILQ_INSERT_TAIL(counters, c, entry); 292 } 293 } 294 295 #define _OUT(_field) offsetof(struct pfctl_status_counter, _field) 296 static const struct snl_attr_parser ap_counter[] = { 297 { .type = PF_C_COUNTER, .off = _OUT(counter), .cb = snl_attr_get_uint64 }, 298 { .type = PF_C_NAME, .off = _OUT(name), .cb = snl_attr_get_string }, 299 { .type = PF_C_ID, .off = _OUT(id), .cb = snl_attr_get_uint32 }, 300 }; 301 SNL_DECLARE_ATTR_PARSER(counter_parser, ap_counter); 302 #undef _OUT 303 304 static bool 305 snl_attr_get_counters(struct snl_state *ss, struct nlattr *nla, 306 const void *arg __unused, void *target) 307 { 308 struct pfctl_status_counter counter = {}; 309 struct pfctl_status_counter *c; 310 bool error; 311 312 error = snl_parse_header(ss, NLA_DATA(nla), NLA_DATA_LEN(nla), &counter_parser, &counter); 313 if (! error) 314 return (error); 315 316 c = malloc(sizeof(*c)); 317 if (c == NULL) 318 return (false); 319 320 c->id = counter.id; 321 c->counter = counter.counter; 322 c->name = strdup(counter.name); 323 324 TAILQ_INSERT_TAIL((struct pfctl_status_counters *)target, c, entry); 325 326 return (error); 327 } 328 329 struct snl_uint64_array { 330 uint64_t *array; 331 size_t count; 332 size_t max; 333 }; 334 static bool 335 snl_attr_get_uint64_element(struct snl_state *ss, struct nlattr *nla, 336 const void *arg, void *target) 337 { 338 bool error; 339 uint64_t value; 340 struct snl_uint64_array *t = (struct snl_uint64_array *)target; 341 342 if (t->count >= t->max) 343 return (false); 344 345 error = snl_attr_get_uint64(ss, nla, arg, &value); 346 if (! error) 347 return (error); 348 349 t->array[t->count++] = value; 350 351 return (true); 352 } 353 354 static const struct snl_attr_parser ap_array[] = { 355 { .cb = snl_attr_get_uint64_element }, 356 }; 357 SNL_DECLARE_ATTR_PARSER(array_parser, ap_array); 358 static bool 359 snl_attr_get_uint64_array(struct snl_state *ss, struct nlattr *nla, 360 const void *arg, void *target) 361 { 362 struct snl_uint64_array a = { 363 .array = target, 364 .count = 0, 365 .max = (size_t)arg, 366 }; 367 bool error; 368 369 error = snl_parse_header(ss, NLA_DATA(nla), NLA_DATA_LEN(nla), &array_parser, &a); 370 if (! error) 371 return (error); 372 373 return (true); 374 } 375 376 #define _OUT(_field) offsetof(struct pfctl_status, _field) 377 static const struct snl_attr_parser ap_getstatus[] = { 378 { .type = PF_GS_IFNAME, .off = _OUT(ifname), .arg_u32 = IFNAMSIZ, .cb = snl_attr_copy_string }, 379 { .type = PF_GS_RUNNING, .off = _OUT(running), .cb = snl_attr_get_bool }, 380 { .type = PF_GS_SINCE, .off = _OUT(since), .cb = snl_attr_get_uint32 }, 381 { .type = PF_GS_DEBUG, .off = _OUT(debug), .cb = snl_attr_get_uint32 }, 382 { .type = PF_GS_HOSTID, .off = _OUT(hostid), .cb = snl_attr_get_uint32 }, 383 { .type = PF_GS_STATES, .off = _OUT(states), .cb = snl_attr_get_uint32 }, 384 { .type = PF_GS_SRC_NODES, .off = _OUT(src_nodes), .cb = snl_attr_get_uint32 }, 385 { .type = PF_GS_REASSEMBLE, .off = _OUT(reass), .cb = snl_attr_get_uint32 }, 386 { .type = PF_GS_SYNCOOKIES_ACTIVE, .off = _OUT(syncookies_active), .cb = snl_attr_get_uint32 }, 387 { .type = PF_GS_COUNTERS, .off = _OUT(counters), .cb = snl_attr_get_counters }, 388 { .type = PF_GS_LCOUNTERS, .off = _OUT(lcounters), .cb = snl_attr_get_counters }, 389 { .type = PF_GS_FCOUNTERS, .off = _OUT(fcounters), .cb = snl_attr_get_counters }, 390 { .type = PF_GS_SCOUNTERS, .off = _OUT(scounters), .cb = snl_attr_get_counters }, 391 { .type = PF_GS_CHKSUM, .off = _OUT(pf_chksum), .arg_u32 = PF_MD5_DIGEST_LENGTH, .cb = snl_attr_get_bytes }, 392 { .type = PF_GS_BCOUNTERS, .off = _OUT(bcounters), .arg_u32 = 2 * 2, .cb = snl_attr_get_uint64_array }, 393 { .type = PF_GS_PCOUNTERS, .off = _OUT(pcounters), .arg_u32 = 2 * 2 * 2, .cb = snl_attr_get_uint64_array }, 394 }; 395 SNL_DECLARE_PARSER(getstatus_parser, struct genlmsghdr, snl_f_p_empty, ap_getstatus); 396 #undef _OUT 397 398 struct pfctl_status * 399 pfctl_get_status_h(struct pfctl_handle *h __unused) 400 { 401 struct pfctl_status *status; 402 struct snl_errmsg_data e = {}; 403 struct nlmsghdr *hdr; 404 struct snl_writer nw; 405 uint32_t seq_id; 406 int family_id; 407 408 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME); 409 if (family_id == 0) 410 return (NULL); 411 412 snl_init_writer(&h->ss, &nw); 413 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GET_STATUS); 414 hdr->nlmsg_flags |= NLM_F_DUMP; 415 416 hdr = snl_finalize_msg(&nw); 417 if (hdr == NULL) { 418 return (NULL); 419 } 420 421 seq_id = hdr->nlmsg_seq; 422 if (! snl_send_message(&h->ss, hdr)) 423 return (NULL); 424 425 status = calloc(1, sizeof(*status)); 426 if (status == NULL) 427 return (NULL); 428 TAILQ_INIT(&status->counters); 429 TAILQ_INIT(&status->lcounters); 430 TAILQ_INIT(&status->fcounters); 431 TAILQ_INIT(&status->scounters); 432 433 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) { 434 if (! snl_parse_nlmsg(&h->ss, hdr, &getstatus_parser, status)) 435 continue; 436 } 437 438 return (status); 439 } 440 441 struct pfctl_status * 442 pfctl_get_status(int dev) 443 { 444 struct pfctl_status *status; 445 nvlist_t *nvl; 446 size_t len; 447 const void *chksum; 448 449 status = calloc(1, sizeof(*status)); 450 if (status == NULL) 451 return (NULL); 452 453 nvl = nvlist_create(0); 454 455 if (pfctl_do_ioctl(dev, DIOCGETSTATUSNV, 4096, &nvl)) { 456 nvlist_destroy(nvl); 457 free(status); 458 return (NULL); 459 } 460 461 status->running = nvlist_get_bool(nvl, "running"); 462 status->since = nvlist_get_number(nvl, "since"); 463 status->debug = nvlist_get_number(nvl, "debug"); 464 status->hostid = ntohl(nvlist_get_number(nvl, "hostid")); 465 status->states = nvlist_get_number(nvl, "states"); 466 status->src_nodes = nvlist_get_number(nvl, "src_nodes"); 467 status->syncookies_active = nvlist_get_bool(nvl, "syncookies_active"); 468 status->reass = nvlist_get_number(nvl, "reass"); 469 470 strlcpy(status->ifname, nvlist_get_string(nvl, "ifname"), 471 IFNAMSIZ); 472 chksum = nvlist_get_binary(nvl, "chksum", &len); 473 assert(len == PF_MD5_DIGEST_LENGTH); 474 memcpy(status->pf_chksum, chksum, len); 475 476 _pfctl_get_status_counters(nvlist_get_nvlist(nvl, "counters"), 477 &status->counters); 478 _pfctl_get_status_counters(nvlist_get_nvlist(nvl, "lcounters"), 479 &status->lcounters); 480 _pfctl_get_status_counters(nvlist_get_nvlist(nvl, "fcounters"), 481 &status->fcounters); 482 _pfctl_get_status_counters(nvlist_get_nvlist(nvl, "scounters"), 483 &status->scounters); 484 485 pf_nvuint_64_array(nvl, "pcounters", 2 * 2 * 2, 486 (uint64_t *)status->pcounters, NULL); 487 pf_nvuint_64_array(nvl, "bcounters", 2 * 2, 488 (uint64_t *)status->bcounters, NULL); 489 490 nvlist_destroy(nvl); 491 492 return (status); 493 } 494 int 495 pfctl_clear_status(struct pfctl_handle *h) 496 { 497 return (pfctl_do_netlink_cmd(h, PFNL_CMD_CLEAR_STATUS)); 498 } 499 500 static uint64_t 501 _pfctl_status_counter(struct pfctl_status_counters *counters, uint64_t id) 502 { 503 struct pfctl_status_counter *c; 504 505 TAILQ_FOREACH(c, counters, entry) { 506 if (c->id == id) 507 return (c->counter); 508 } 509 510 return (0); 511 } 512 513 uint64_t 514 pfctl_status_counter(struct pfctl_status *status, int id) 515 { 516 return (_pfctl_status_counter(&status->counters, id)); 517 } 518 519 uint64_t 520 pfctl_status_lcounter(struct pfctl_status *status, int id) 521 { 522 return (_pfctl_status_counter(&status->lcounters, id)); 523 } 524 525 uint64_t 526 pfctl_status_fcounter(struct pfctl_status *status, int id) 527 { 528 return (_pfctl_status_counter(&status->fcounters, id)); 529 } 530 531 uint64_t 532 pfctl_status_scounter(struct pfctl_status *status, int id) 533 { 534 return (_pfctl_status_counter(&status->scounters, id)); 535 } 536 537 void 538 pfctl_free_status(struct pfctl_status *status) 539 { 540 struct pfctl_status_counter *c, *tmp; 541 542 if (status == NULL) 543 return; 544 545 TAILQ_FOREACH_SAFE(c, &status->counters, entry, tmp) { 546 free(c->name); 547 free(c); 548 } 549 TAILQ_FOREACH_SAFE(c, &status->lcounters, entry, tmp) { 550 free(c->name); 551 free(c); 552 } 553 TAILQ_FOREACH_SAFE(c, &status->fcounters, entry, tmp) { 554 free(c->name); 555 free(c); 556 } 557 TAILQ_FOREACH_SAFE(c, &status->scounters, entry, tmp) { 558 free(c->name); 559 free(c); 560 } 561 562 free(status); 563 } 564 565 static void 566 pfctl_nv_add_addr(nvlist_t *nvparent, const char *name, 567 const struct pf_addr *addr) 568 { 569 nvlist_t *nvl = nvlist_create(0); 570 571 nvlist_add_binary(nvl, "addr", addr, sizeof(*addr)); 572 573 nvlist_add_nvlist(nvparent, name, nvl); 574 nvlist_destroy(nvl); 575 } 576 577 static void 578 pf_nvaddr_to_addr(const nvlist_t *nvl, struct pf_addr *addr) 579 { 580 size_t len; 581 const void *data; 582 583 data = nvlist_get_binary(nvl, "addr", &len); 584 assert(len == sizeof(struct pf_addr)); 585 memcpy(addr, data, len); 586 } 587 588 static void 589 pfctl_nv_add_addr_wrap(nvlist_t *nvparent, const char *name, 590 const struct pf_addr_wrap *addr) 591 { 592 nvlist_t *nvl = nvlist_create(0); 593 594 nvlist_add_number(nvl, "type", addr->type); 595 nvlist_add_number(nvl, "iflags", addr->iflags); 596 if (addr->type == PF_ADDR_DYNIFTL) 597 nvlist_add_string(nvl, "ifname", addr->v.ifname); 598 if (addr->type == PF_ADDR_TABLE) 599 nvlist_add_string(nvl, "tblname", addr->v.tblname); 600 pfctl_nv_add_addr(nvl, "addr", &addr->v.a.addr); 601 pfctl_nv_add_addr(nvl, "mask", &addr->v.a.mask); 602 603 nvlist_add_nvlist(nvparent, name, nvl); 604 nvlist_destroy(nvl); 605 } 606 607 static void 608 pf_nvaddr_wrap_to_addr_wrap(const nvlist_t *nvl, struct pf_addr_wrap *addr) 609 { 610 bzero(addr, sizeof(*addr)); 611 612 addr->type = nvlist_get_number(nvl, "type"); 613 addr->iflags = nvlist_get_number(nvl, "iflags"); 614 if (addr->type == PF_ADDR_DYNIFTL) { 615 strlcpy(addr->v.ifname, nvlist_get_string(nvl, "ifname"), 616 IFNAMSIZ); 617 addr->p.dyncnt = nvlist_get_number(nvl, "dyncnt"); 618 } 619 if (addr->type == PF_ADDR_TABLE) { 620 strlcpy(addr->v.tblname, nvlist_get_string(nvl, "tblname"), 621 PF_TABLE_NAME_SIZE); 622 addr->p.tblcnt = nvlist_get_number(nvl, "tblcnt"); 623 } 624 625 pf_nvaddr_to_addr(nvlist_get_nvlist(nvl, "addr"), &addr->v.a.addr); 626 pf_nvaddr_to_addr(nvlist_get_nvlist(nvl, "mask"), &addr->v.a.mask); 627 } 628 629 static void 630 pfctl_nv_add_rule_addr(nvlist_t *nvparent, const char *name, 631 const struct pf_rule_addr *addr) 632 { 633 uint64_t ports[2]; 634 nvlist_t *nvl = nvlist_create(0); 635 636 pfctl_nv_add_addr_wrap(nvl, "addr", &addr->addr); 637 ports[0] = addr->port[0]; 638 ports[1] = addr->port[1]; 639 nvlist_add_number_array(nvl, "port", ports, 2); 640 nvlist_add_number(nvl, "neg", addr->neg); 641 nvlist_add_number(nvl, "port_op", addr->port_op); 642 643 nvlist_add_nvlist(nvparent, name, nvl); 644 nvlist_destroy(nvl); 645 } 646 647 static void 648 pf_nvrule_addr_to_rule_addr(const nvlist_t *nvl, struct pf_rule_addr *addr) 649 { 650 pf_nvaddr_wrap_to_addr_wrap(nvlist_get_nvlist(nvl, "addr"), &addr->addr); 651 652 pf_nvuint_16_array(nvl, "port", 2, addr->port, NULL); 653 addr->neg = nvlist_get_number(nvl, "neg"); 654 addr->port_op = nvlist_get_number(nvl, "port_op"); 655 } 656 657 static void 658 pf_nvmape_to_mape(const nvlist_t *nvl, struct pf_mape_portset *mape) 659 { 660 mape->offset = nvlist_get_number(nvl, "offset"); 661 mape->psidlen = nvlist_get_number(nvl, "psidlen"); 662 mape->psid = nvlist_get_number(nvl, "psid"); 663 } 664 665 static void 666 pf_nvpool_to_pool(const nvlist_t *nvl, struct pfctl_pool *pool) 667 { 668 size_t len; 669 const void *data; 670 671 data = nvlist_get_binary(nvl, "key", &len); 672 assert(len == sizeof(pool->key)); 673 memcpy(&pool->key, data, len); 674 675 pf_nvaddr_to_addr(nvlist_get_nvlist(nvl, "counter"), &pool->counter); 676 677 pool->tblidx = nvlist_get_number(nvl, "tblidx"); 678 pf_nvuint_16_array(nvl, "proxy_port", 2, pool->proxy_port, NULL); 679 pool->opts = nvlist_get_number(nvl, "opts"); 680 681 if (nvlist_exists_nvlist(nvl, "mape")) 682 pf_nvmape_to_mape(nvlist_get_nvlist(nvl, "mape"), &pool->mape); 683 } 684 685 static void 686 pf_nvrule_uid_to_rule_uid(const nvlist_t *nvl, struct pf_rule_uid *uid) 687 { 688 pf_nvuint_32_array(nvl, "uid", 2, uid->uid, NULL); 689 uid->op = nvlist_get_number(nvl, "op"); 690 } 691 692 static void 693 pf_nvdivert_to_divert(const nvlist_t *nvl, struct pfctl_rule *rule) 694 { 695 pf_nvaddr_to_addr(nvlist_get_nvlist(nvl, "addr"), &rule->divert.addr); 696 rule->divert.port = nvlist_get_number(nvl, "port"); 697 } 698 699 static void 700 pf_nvrule_to_rule(const nvlist_t *nvl, struct pfctl_rule *rule) 701 { 702 const uint64_t *skip; 703 const char *const *labels; 704 size_t skipcount, labelcount; 705 706 rule->nr = nvlist_get_number(nvl, "nr"); 707 708 pf_nvrule_addr_to_rule_addr(nvlist_get_nvlist(nvl, "src"), &rule->src); 709 pf_nvrule_addr_to_rule_addr(nvlist_get_nvlist(nvl, "dst"), &rule->dst); 710 711 skip = nvlist_get_number_array(nvl, "skip", &skipcount); 712 assert(skip); 713 assert(skipcount == PF_SKIP_COUNT); 714 for (int i = 0; i < PF_SKIP_COUNT; i++) 715 rule->skip[i].nr = skip[i]; 716 717 labels = nvlist_get_string_array(nvl, "labels", &labelcount); 718 assert(labelcount <= PF_RULE_MAX_LABEL_COUNT); 719 for (size_t i = 0; i < labelcount; i++) 720 strlcpy(rule->label[i], labels[i], PF_RULE_LABEL_SIZE); 721 rule->ridentifier = nvlist_get_number(nvl, "ridentifier"); 722 strlcpy(rule->ifname, nvlist_get_string(nvl, "ifname"), IFNAMSIZ); 723 strlcpy(rule->qname, nvlist_get_string(nvl, "qname"), PF_QNAME_SIZE); 724 strlcpy(rule->pqname, nvlist_get_string(nvl, "pqname"), PF_QNAME_SIZE); 725 strlcpy(rule->tagname, nvlist_get_string(nvl, "tagname"), 726 PF_TAG_NAME_SIZE); 727 strlcpy(rule->match_tagname, nvlist_get_string(nvl, "match_tagname"), 728 PF_TAG_NAME_SIZE); 729 730 strlcpy(rule->overload_tblname, nvlist_get_string(nvl, "overload_tblname"), 731 PF_TABLE_NAME_SIZE); 732 733 pf_nvpool_to_pool(nvlist_get_nvlist(nvl, "rpool"), &rule->rdr); 734 735 rule->evaluations = nvlist_get_number(nvl, "evaluations"); 736 pf_nvuint_64_array(nvl, "packets", 2, rule->packets, NULL); 737 pf_nvuint_64_array(nvl, "bytes", 2, rule->bytes, NULL); 738 739 if (nvlist_exists_number(nvl, "timestamp")) { 740 rule->last_active_timestamp = nvlist_get_number(nvl, "timestamp"); 741 } 742 743 rule->os_fingerprint = nvlist_get_number(nvl, "os_fingerprint"); 744 745 rule->rtableid = nvlist_get_number(nvl, "rtableid"); 746 pf_nvuint_32_array(nvl, "timeout", PFTM_MAX, rule->timeout, NULL); 747 rule->max_states = nvlist_get_number(nvl, "max_states"); 748 rule->max_src_nodes = nvlist_get_number(nvl, "max_src_nodes"); 749 rule->max_src_states = nvlist_get_number(nvl, "max_src_states"); 750 rule->max_src_conn = nvlist_get_number(nvl, "max_src_conn"); 751 rule->max_src_conn_rate.limit = 752 nvlist_get_number(nvl, "max_src_conn_rate.limit"); 753 rule->max_src_conn_rate.seconds = 754 nvlist_get_number(nvl, "max_src_conn_rate.seconds"); 755 rule->qid = nvlist_get_number(nvl, "qid"); 756 rule->pqid = nvlist_get_number(nvl, "pqid"); 757 rule->dnpipe = nvlist_get_number(nvl, "dnpipe"); 758 rule->dnrpipe = nvlist_get_number(nvl, "dnrpipe"); 759 rule->free_flags = nvlist_get_number(nvl, "dnflags"); 760 rule->prob = nvlist_get_number(nvl, "prob"); 761 rule->cuid = nvlist_get_number(nvl, "cuid"); 762 rule->cpid = nvlist_get_number(nvl, "cpid"); 763 764 rule->return_icmp = nvlist_get_number(nvl, "return_icmp"); 765 rule->return_icmp6 = nvlist_get_number(nvl, "return_icmp6"); 766 rule->max_mss = nvlist_get_number(nvl, "max_mss"); 767 rule->scrub_flags = nvlist_get_number(nvl, "scrub_flags"); 768 769 pf_nvrule_uid_to_rule_uid(nvlist_get_nvlist(nvl, "uid"), &rule->uid); 770 pf_nvrule_uid_to_rule_uid(nvlist_get_nvlist(nvl, "gid"), 771 (struct pf_rule_uid *)&rule->gid); 772 773 rule->rule_flag = nvlist_get_number(nvl, "rule_flag"); 774 rule->action = nvlist_get_number(nvl, "action"); 775 rule->direction = nvlist_get_number(nvl, "direction"); 776 rule->log = nvlist_get_number(nvl, "log"); 777 rule->logif = nvlist_get_number(nvl, "logif"); 778 rule->quick = nvlist_get_number(nvl, "quick"); 779 rule->ifnot = nvlist_get_number(nvl, "ifnot"); 780 rule->match_tag_not = nvlist_get_number(nvl, "match_tag_not"); 781 rule->natpass = nvlist_get_number(nvl, "natpass"); 782 783 rule->keep_state = nvlist_get_number(nvl, "keep_state"); 784 rule->af = nvlist_get_number(nvl, "af"); 785 rule->proto = nvlist_get_number(nvl, "proto"); 786 rule->type = nvlist_get_number(nvl, "type"); 787 rule->code = nvlist_get_number(nvl, "code"); 788 rule->flags = nvlist_get_number(nvl, "flags"); 789 rule->flagset = nvlist_get_number(nvl, "flagset"); 790 rule->min_ttl = nvlist_get_number(nvl, "min_ttl"); 791 rule->allow_opts = nvlist_get_number(nvl, "allow_opts"); 792 rule->rt = nvlist_get_number(nvl, "rt"); 793 rule->return_ttl = nvlist_get_number(nvl, "return_ttl"); 794 rule->tos = nvlist_get_number(nvl, "tos"); 795 rule->set_tos = nvlist_get_number(nvl, "set_tos"); 796 rule->anchor_relative = nvlist_get_number(nvl, "anchor_relative"); 797 rule->anchor_wildcard = nvlist_get_number(nvl, "anchor_wildcard"); 798 799 rule->flush = nvlist_get_number(nvl, "flush"); 800 rule->prio = nvlist_get_number(nvl, "prio"); 801 pf_nvuint_8_array(nvl, "set_prio", 2, rule->set_prio, NULL); 802 803 pf_nvdivert_to_divert(nvlist_get_nvlist(nvl, "divert"), rule); 804 805 rule->states_cur = nvlist_get_number(nvl, "states_cur"); 806 rule->states_tot = nvlist_get_number(nvl, "states_tot"); 807 rule->src_nodes = nvlist_get_number(nvl, "src_nodes"); 808 } 809 810 static void 811 pfctl_nveth_addr_to_eth_addr(const nvlist_t *nvl, struct pfctl_eth_addr *addr) 812 { 813 static const u_int8_t EMPTY_MAC[ETHER_ADDR_LEN] = { 0 }; 814 size_t len; 815 const void *data; 816 817 data = nvlist_get_binary(nvl, "addr", &len); 818 assert(len == sizeof(addr->addr)); 819 memcpy(addr->addr, data, sizeof(addr->addr)); 820 821 data = nvlist_get_binary(nvl, "mask", &len); 822 assert(len == sizeof(addr->mask)); 823 memcpy(addr->mask, data, sizeof(addr->mask)); 824 825 addr->neg = nvlist_get_bool(nvl, "neg"); 826 827 /* To make checks for 'is this address set?' easier. */ 828 addr->isset = memcmp(addr->addr, EMPTY_MAC, ETHER_ADDR_LEN) != 0; 829 } 830 831 static nvlist_t * 832 pfctl_eth_addr_to_nveth_addr(const struct pfctl_eth_addr *addr) 833 { 834 nvlist_t *nvl; 835 836 nvl = nvlist_create(0); 837 if (nvl == NULL) 838 return (NULL); 839 840 nvlist_add_bool(nvl, "neg", addr->neg); 841 nvlist_add_binary(nvl, "addr", &addr->addr, ETHER_ADDR_LEN); 842 nvlist_add_binary(nvl, "mask", &addr->mask, ETHER_ADDR_LEN); 843 844 return (nvl); 845 } 846 847 static void 848 pfctl_nveth_rule_to_eth_rule(const nvlist_t *nvl, struct pfctl_eth_rule *rule) 849 { 850 const char *const *labels; 851 size_t labelcount, i; 852 853 rule->nr = nvlist_get_number(nvl, "nr"); 854 rule->quick = nvlist_get_bool(nvl, "quick"); 855 strlcpy(rule->ifname, nvlist_get_string(nvl, "ifname"), IFNAMSIZ); 856 rule->ifnot = nvlist_get_bool(nvl, "ifnot"); 857 rule->direction = nvlist_get_number(nvl, "direction"); 858 rule->proto = nvlist_get_number(nvl, "proto"); 859 strlcpy(rule->match_tagname, nvlist_get_string(nvl, "match_tagname"), 860 PF_TAG_NAME_SIZE); 861 rule->match_tag = nvlist_get_number(nvl, "match_tag"); 862 rule->match_tag_not = nvlist_get_bool(nvl, "match_tag_not"); 863 864 labels = nvlist_get_string_array(nvl, "labels", &labelcount); 865 assert(labelcount <= PF_RULE_MAX_LABEL_COUNT); 866 for (i = 0; i < labelcount; i++) 867 strlcpy(rule->label[i], labels[i], PF_RULE_LABEL_SIZE); 868 rule->ridentifier = nvlist_get_number(nvl, "ridentifier"); 869 870 pfctl_nveth_addr_to_eth_addr(nvlist_get_nvlist(nvl, "src"), 871 &rule->src); 872 pfctl_nveth_addr_to_eth_addr(nvlist_get_nvlist(nvl, "dst"), 873 &rule->dst); 874 875 pf_nvrule_addr_to_rule_addr(nvlist_get_nvlist(nvl, "ipsrc"), 876 &rule->ipsrc); 877 pf_nvrule_addr_to_rule_addr(nvlist_get_nvlist(nvl, "ipdst"), 878 &rule->ipdst); 879 880 rule->evaluations = nvlist_get_number(nvl, "evaluations"); 881 rule->packets[0] = nvlist_get_number(nvl, "packets-in"); 882 rule->packets[1] = nvlist_get_number(nvl, "packets-out"); 883 rule->bytes[0] = nvlist_get_number(nvl, "bytes-in"); 884 rule->bytes[1] = nvlist_get_number(nvl, "bytes-out"); 885 886 if (nvlist_exists_number(nvl, "timestamp")) { 887 rule->last_active_timestamp = nvlist_get_number(nvl, "timestamp"); 888 } 889 890 strlcpy(rule->qname, nvlist_get_string(nvl, "qname"), PF_QNAME_SIZE); 891 strlcpy(rule->tagname, nvlist_get_string(nvl, "tagname"), 892 PF_TAG_NAME_SIZE); 893 894 rule->dnpipe = nvlist_get_number(nvl, "dnpipe"); 895 rule->dnflags = nvlist_get_number(nvl, "dnflags"); 896 897 rule->anchor_relative = nvlist_get_number(nvl, "anchor_relative"); 898 rule->anchor_wildcard = nvlist_get_number(nvl, "anchor_wildcard"); 899 900 strlcpy(rule->bridge_to, nvlist_get_string(nvl, "bridge_to"), 901 IFNAMSIZ); 902 903 rule->action = nvlist_get_number(nvl, "action"); 904 } 905 906 int 907 pfctl_get_eth_rulesets_info(int dev, struct pfctl_eth_rulesets_info *ri, 908 const char *path) 909 { 910 nvlist_t *nvl; 911 int ret; 912 913 bzero(ri, sizeof(*ri)); 914 915 nvl = nvlist_create(0); 916 nvlist_add_string(nvl, "path", path); 917 918 if ((ret = pfctl_do_ioctl(dev, DIOCGETETHRULESETS, 256, &nvl)) != 0) 919 goto out; 920 921 ri->nr = nvlist_get_number(nvl, "nr"); 922 923 out: 924 nvlist_destroy(nvl); 925 return (ret); 926 } 927 928 int 929 pfctl_get_eth_ruleset(int dev, const char *path, int nr, 930 struct pfctl_eth_ruleset_info *ri) 931 { 932 nvlist_t *nvl; 933 int ret; 934 935 bzero(ri, sizeof(*ri)); 936 937 nvl = nvlist_create(0); 938 nvlist_add_string(nvl, "path", path); 939 nvlist_add_number(nvl, "nr", nr); 940 941 if ((ret = pfctl_do_ioctl(dev, DIOCGETETHRULESET, 1024, &nvl)) != 0) 942 goto out; 943 944 ri->nr = nvlist_get_number(nvl, "nr"); 945 strlcpy(ri->path, nvlist_get_string(nvl, "path"), MAXPATHLEN); 946 strlcpy(ri->name, nvlist_get_string(nvl, "name"), 947 PF_ANCHOR_NAME_SIZE); 948 949 out: 950 nvlist_destroy(nvl); 951 return (ret); 952 } 953 954 int 955 pfctl_get_eth_rules_info(int dev, struct pfctl_eth_rules_info *rules, 956 const char *path) 957 { 958 nvlist_t *nvl; 959 int ret; 960 961 bzero(rules, sizeof(*rules)); 962 963 nvl = nvlist_create(0); 964 nvlist_add_string(nvl, "anchor", path); 965 966 if ((ret = pfctl_do_ioctl(dev, DIOCGETETHRULES, 1024, &nvl)) != 0) 967 goto out; 968 969 rules->nr = nvlist_get_number(nvl, "nr"); 970 rules->ticket = nvlist_get_number(nvl, "ticket"); 971 972 out: 973 nvlist_destroy(nvl); 974 return (ret); 975 } 976 977 int 978 pfctl_get_eth_rule(int dev, uint32_t nr, uint32_t ticket, 979 const char *path, struct pfctl_eth_rule *rule, bool clear, 980 char *anchor_call) 981 { 982 nvlist_t *nvl; 983 int ret; 984 985 nvl = nvlist_create(0); 986 987 nvlist_add_string(nvl, "anchor", path); 988 nvlist_add_number(nvl, "ticket", ticket); 989 nvlist_add_number(nvl, "nr", nr); 990 nvlist_add_bool(nvl, "clear", clear); 991 992 if ((ret = pfctl_do_ioctl(dev, DIOCGETETHRULE, 4096, &nvl)) != 0) 993 goto out; 994 995 pfctl_nveth_rule_to_eth_rule(nvl, rule); 996 997 if (anchor_call) 998 strlcpy(anchor_call, nvlist_get_string(nvl, "anchor_call"), 999 MAXPATHLEN); 1000 1001 out: 1002 nvlist_destroy(nvl); 1003 return (ret); 1004 } 1005 1006 int 1007 pfctl_add_eth_rule(int dev, const struct pfctl_eth_rule *r, const char *anchor, 1008 const char *anchor_call, uint32_t ticket) 1009 { 1010 struct pfioc_nv nv; 1011 nvlist_t *nvl, *addr; 1012 void *packed; 1013 int error = 0; 1014 size_t labelcount, size; 1015 1016 nvl = nvlist_create(0); 1017 1018 nvlist_add_number(nvl, "ticket", ticket); 1019 nvlist_add_string(nvl, "anchor", anchor); 1020 nvlist_add_string(nvl, "anchor_call", anchor_call); 1021 1022 nvlist_add_number(nvl, "nr", r->nr); 1023 nvlist_add_bool(nvl, "quick", r->quick); 1024 nvlist_add_string(nvl, "ifname", r->ifname); 1025 nvlist_add_bool(nvl, "ifnot", r->ifnot); 1026 nvlist_add_number(nvl, "direction", r->direction); 1027 nvlist_add_number(nvl, "proto", r->proto); 1028 nvlist_add_string(nvl, "match_tagname", r->match_tagname); 1029 nvlist_add_bool(nvl, "match_tag_not", r->match_tag_not); 1030 1031 addr = pfctl_eth_addr_to_nveth_addr(&r->src); 1032 if (addr == NULL) { 1033 nvlist_destroy(nvl); 1034 return (ENOMEM); 1035 } 1036 nvlist_add_nvlist(nvl, "src", addr); 1037 nvlist_destroy(addr); 1038 1039 addr = pfctl_eth_addr_to_nveth_addr(&r->dst); 1040 if (addr == NULL) { 1041 nvlist_destroy(nvl); 1042 return (ENOMEM); 1043 } 1044 nvlist_add_nvlist(nvl, "dst", addr); 1045 nvlist_destroy(addr); 1046 1047 pfctl_nv_add_rule_addr(nvl, "ipsrc", &r->ipsrc); 1048 pfctl_nv_add_rule_addr(nvl, "ipdst", &r->ipdst); 1049 1050 labelcount = 0; 1051 while (labelcount < PF_RULE_MAX_LABEL_COUNT && 1052 r->label[labelcount][0] != 0) { 1053 nvlist_append_string_array(nvl, "labels", 1054 r->label[labelcount]); 1055 labelcount++; 1056 } 1057 nvlist_add_number(nvl, "ridentifier", r->ridentifier); 1058 1059 nvlist_add_string(nvl, "qname", r->qname); 1060 nvlist_add_string(nvl, "tagname", r->tagname); 1061 nvlist_add_number(nvl, "dnpipe", r->dnpipe); 1062 nvlist_add_number(nvl, "dnflags", r->dnflags); 1063 1064 nvlist_add_string(nvl, "bridge_to", r->bridge_to); 1065 1066 nvlist_add_number(nvl, "action", r->action); 1067 1068 packed = nvlist_pack(nvl, &size); 1069 if (packed == NULL) { 1070 nvlist_destroy(nvl); 1071 return (ENOMEM); 1072 } 1073 1074 nv.len = size; 1075 nv.size = size; 1076 nv.data = packed; 1077 1078 if (ioctl(dev, DIOCADDETHRULE, &nv) != 0) 1079 error = errno; 1080 1081 free(packed); 1082 nvlist_destroy(nvl); 1083 1084 return (error); 1085 } 1086 1087 static void 1088 snl_add_msg_attr_addr_wrap(struct snl_writer *nw, uint32_t type, const struct pf_addr_wrap *addr) 1089 { 1090 int off; 1091 1092 off = snl_add_msg_attr_nested(nw, type); 1093 1094 snl_add_msg_attr_ip6(nw, PF_AT_ADDR, &addr->v.a.addr.v6); 1095 snl_add_msg_attr_ip6(nw, PF_AT_MASK, &addr->v.a.mask.v6); 1096 1097 if (addr->type == PF_ADDR_DYNIFTL) 1098 snl_add_msg_attr_string(nw, PF_AT_IFNAME, addr->v.ifname); 1099 if (addr->type == PF_ADDR_TABLE) 1100 snl_add_msg_attr_string(nw, PF_AT_TABLENAME, addr->v.tblname); 1101 snl_add_msg_attr_u8(nw, PF_AT_TYPE, addr->type); 1102 snl_add_msg_attr_u8(nw, PF_AT_IFLAGS, addr->iflags); 1103 1104 snl_end_attr_nested(nw, off); 1105 } 1106 1107 static void 1108 snl_add_msg_attr_pool_addr(struct snl_writer *nw, uint32_t type, const struct pf_pooladdr *pa) 1109 { 1110 int off; 1111 1112 off = snl_add_msg_attr_nested(nw, type); 1113 1114 snl_add_msg_attr_string(nw, PF_PA_IFNAME, pa->ifname); 1115 snl_add_msg_attr_addr_wrap(nw, PF_PA_ADDR, &pa->addr); 1116 1117 snl_end_attr_nested(nw, off); 1118 } 1119 1120 static void 1121 snl_add_msg_attr_rule_addr(struct snl_writer *nw, uint32_t type, const struct pf_rule_addr *addr) 1122 { 1123 int off; 1124 1125 off = snl_add_msg_attr_nested(nw, type); 1126 1127 snl_add_msg_attr_addr_wrap(nw, PF_RAT_ADDR, &addr->addr); 1128 snl_add_msg_attr_u16(nw, PF_RAT_SRC_PORT, addr->port[0]); 1129 snl_add_msg_attr_u16(nw, PF_RAT_DST_PORT, addr->port[1]); 1130 snl_add_msg_attr_u8(nw, PF_RAT_NEG, addr->neg); 1131 snl_add_msg_attr_u8(nw, PF_RAT_OP, addr->port_op); 1132 1133 snl_end_attr_nested(nw, off); 1134 } 1135 1136 static void 1137 snl_add_msg_attr_rule_labels(struct snl_writer *nw, uint32_t type, const char labels[PF_RULE_MAX_LABEL_COUNT][PF_RULE_LABEL_SIZE]) 1138 { 1139 int off, i = 0; 1140 1141 off = snl_add_msg_attr_nested(nw, type); 1142 1143 while (i < PF_RULE_MAX_LABEL_COUNT && 1144 labels[i][0] != 0) { 1145 snl_add_msg_attr_string(nw, PF_LT_LABEL, labels[i]); 1146 i++; 1147 } 1148 1149 snl_end_attr_nested(nw, off); 1150 } 1151 1152 static void 1153 snl_add_msg_attr_mape(struct snl_writer *nw, uint32_t type, const struct pf_mape_portset *me) 1154 { 1155 int off; 1156 1157 off = snl_add_msg_attr_nested(nw, type); 1158 1159 snl_add_msg_attr_u8(nw, PF_MET_OFFSET, me->offset); 1160 snl_add_msg_attr_u8(nw, PF_MET_PSID_LEN, me->psidlen); 1161 snl_add_msg_attr_u16(nw, PF_MET_PSID, me->psid); 1162 1163 snl_end_attr_nested(nw, off); 1164 } 1165 1166 static void 1167 snl_add_msg_attr_rpool(struct snl_writer *nw, uint32_t type, const struct pfctl_pool *pool) 1168 { 1169 int off; 1170 1171 off = snl_add_msg_attr_nested(nw, type); 1172 1173 snl_add_msg_attr(nw, PF_PT_KEY, sizeof(pool->key), &pool->key); 1174 snl_add_msg_attr_ip6(nw, PF_PT_COUNTER, &pool->counter.v6); 1175 snl_add_msg_attr_u32(nw, PF_PT_TBLIDX, pool->tblidx); 1176 snl_add_msg_attr_u16(nw, PF_PT_PROXY_SRC_PORT, pool->proxy_port[0]); 1177 snl_add_msg_attr_u16(nw, PF_PT_PROXY_DST_PORT, pool->proxy_port[1]); 1178 snl_add_msg_attr_u8(nw, PF_PT_OPTS, pool->opts); 1179 snl_add_msg_attr_mape(nw, PF_PT_MAPE, &pool->mape); 1180 1181 snl_end_attr_nested(nw, off); 1182 } 1183 1184 static void 1185 snl_add_msg_attr_timeouts(struct snl_writer *nw, uint32_t type, const uint32_t *timeouts) 1186 { 1187 int off; 1188 1189 off = snl_add_msg_attr_nested(nw, type); 1190 1191 for (int i = 0; i < PFTM_MAX; i++) 1192 snl_add_msg_attr_u32(nw, PF_TT_TIMEOUT, timeouts[i]); 1193 1194 snl_end_attr_nested(nw, off); 1195 } 1196 1197 static void 1198 snl_add_msg_attr_uid(struct snl_writer *nw, uint32_t type, const struct pf_rule_uid *uid) 1199 { 1200 int off; 1201 1202 off = snl_add_msg_attr_nested(nw, type); 1203 1204 snl_add_msg_attr_u32(nw, PF_RUT_UID_LOW, uid->uid[0]); 1205 snl_add_msg_attr_u32(nw, PF_RUT_UID_HIGH, uid->uid[1]); 1206 snl_add_msg_attr_u8(nw, PF_RUT_OP, uid->op); 1207 1208 snl_end_attr_nested(nw, off); 1209 } 1210 1211 static void 1212 snl_add_msg_attr_pf_rule(struct snl_writer *nw, uint32_t type, const struct pfctl_rule *r) 1213 { 1214 int off; 1215 1216 off = snl_add_msg_attr_nested(nw, type); 1217 1218 snl_add_msg_attr_rule_addr(nw, PF_RT_SRC, &r->src); 1219 snl_add_msg_attr_rule_addr(nw, PF_RT_DST, &r->dst); 1220 snl_add_msg_attr_rule_labels(nw, PF_RT_LABELS, r->label); 1221 snl_add_msg_attr_u32(nw, PF_RT_RIDENTIFIER, r->ridentifier); 1222 snl_add_msg_attr_string(nw, PF_RT_IFNAME, r->ifname); 1223 snl_add_msg_attr_string(nw, PF_RT_QNAME, r->qname); 1224 snl_add_msg_attr_string(nw, PF_RT_PQNAME, r->pqname); 1225 snl_add_msg_attr_string(nw, PF_RT_TAGNAME, r->tagname); 1226 snl_add_msg_attr_string(nw, PF_RT_MATCH_TAGNAME, r->match_tagname); 1227 snl_add_msg_attr_string(nw, PF_RT_OVERLOAD_TBLNAME, r->overload_tblname); 1228 snl_add_msg_attr_rpool(nw, PF_RT_RPOOL_RDR, &r->rdr); 1229 snl_add_msg_attr_rpool(nw, PF_RT_RPOOL_NAT, &r->nat); 1230 snl_add_msg_attr_rpool(nw, PF_RT_RPOOL_RT, &r->route); 1231 snl_add_msg_attr_u32(nw, PF_RT_OS_FINGERPRINT, r->os_fingerprint); 1232 snl_add_msg_attr_u32(nw, PF_RT_RTABLEID, r->rtableid); 1233 snl_add_msg_attr_timeouts(nw, PF_RT_TIMEOUT, r->timeout); 1234 snl_add_msg_attr_u32(nw, PF_RT_MAX_STATES, r->max_states); 1235 snl_add_msg_attr_u32(nw, PF_RT_MAX_SRC_NODES, r->max_src_nodes); 1236 snl_add_msg_attr_u32(nw, PF_RT_MAX_SRC_STATES, r->max_src_states); 1237 snl_add_msg_attr_u32(nw, PF_RT_MAX_SRC_CONN, r->max_src_conn); 1238 snl_add_msg_attr_u32(nw, PF_RT_MAX_SRC_CONN_RATE_LIMIT, r->max_src_conn_rate.limit); 1239 snl_add_msg_attr_u32(nw, PF_RT_MAX_SRC_CONN_RATE_SECS, r->max_src_conn_rate.seconds); 1240 1241 snl_add_msg_attr_u16(nw, PF_RT_DNPIPE, r->dnpipe); 1242 snl_add_msg_attr_u16(nw, PF_RT_DNRPIPE, r->dnrpipe); 1243 snl_add_msg_attr_u32(nw, PF_RT_DNFLAGS, r->free_flags); 1244 1245 snl_add_msg_attr_u32(nw, PF_RT_NR, r->nr); 1246 snl_add_msg_attr_u32(nw, PF_RT_PROB, r->prob); 1247 snl_add_msg_attr_u32(nw, PF_RT_CUID, r->cuid); 1248 snl_add_msg_attr_u32(nw, PF_RT_CPID, r->cpid); 1249 1250 snl_add_msg_attr_u16(nw, PF_RT_RETURN_ICMP, r->return_icmp); 1251 snl_add_msg_attr_u16(nw, PF_RT_RETURN_ICMP6, r->return_icmp6); 1252 snl_add_msg_attr_u16(nw, PF_RT_MAX_MSS, r->max_mss); 1253 snl_add_msg_attr_u16(nw, PF_RT_SCRUB_FLAGS, r->scrub_flags); 1254 1255 snl_add_msg_attr_uid(nw, PF_RT_UID, &r->uid); 1256 snl_add_msg_attr_uid(nw, PF_RT_GID, (const struct pf_rule_uid *)&r->gid); 1257 snl_add_msg_attr_string(nw, PF_RT_RCV_IFNAME, r->rcv_ifname); 1258 snl_add_msg_attr_bool(nw, PF_RT_RCV_IFNOT, r->rcvifnot); 1259 1260 snl_add_msg_attr_u32(nw, PF_RT_RULE_FLAG, r->rule_flag); 1261 snl_add_msg_attr_u8(nw, PF_RT_ACTION, r->action); 1262 snl_add_msg_attr_u8(nw, PF_RT_DIRECTION, r->direction); 1263 snl_add_msg_attr_u8(nw, PF_RT_LOG, r->log); 1264 snl_add_msg_attr_u8(nw, PF_RT_LOGIF, r->logif); 1265 snl_add_msg_attr_u8(nw, PF_RT_QUICK, r->quick); 1266 snl_add_msg_attr_u8(nw, PF_RT_IF_NOT, r->ifnot); 1267 snl_add_msg_attr_u8(nw, PF_RT_MATCH_TAG_NOT, r->match_tag_not); 1268 snl_add_msg_attr_u8(nw, PF_RT_NATPASS, r->natpass); 1269 snl_add_msg_attr_u8(nw, PF_RT_KEEP_STATE, r->keep_state); 1270 snl_add_msg_attr_u8(nw, PF_RT_AF, r->af); 1271 snl_add_msg_attr_u8(nw, PF_RT_PROTO, r->proto); 1272 snl_add_msg_attr_u8(nw, PF_RT_TYPE, r->type); 1273 snl_add_msg_attr_u8(nw, PF_RT_CODE, r->code); 1274 snl_add_msg_attr_u8(nw, PF_RT_FLAGS, r->flags); 1275 snl_add_msg_attr_u8(nw, PF_RT_FLAGSET, r->flagset); 1276 snl_add_msg_attr_u8(nw, PF_RT_MIN_TTL, r->min_ttl); 1277 snl_add_msg_attr_u8(nw, PF_RT_ALLOW_OPTS, r->allow_opts); 1278 snl_add_msg_attr_u8(nw, PF_RT_RT, r->rt); 1279 snl_add_msg_attr_u8(nw, PF_RT_RETURN_TTL, r->return_ttl); 1280 snl_add_msg_attr_u8(nw, PF_RT_TOS, r->tos); 1281 snl_add_msg_attr_u8(nw, PF_RT_SET_TOS, r->set_tos); 1282 1283 snl_add_msg_attr_u8(nw, PF_RT_ANCHOR_RELATIVE, r->anchor_relative); 1284 snl_add_msg_attr_u8(nw, PF_RT_ANCHOR_WILDCARD, r->anchor_wildcard); 1285 snl_add_msg_attr_u8(nw, PF_RT_FLUSH, r->flush); 1286 snl_add_msg_attr_u8(nw, PF_RT_PRIO, r->prio); 1287 snl_add_msg_attr_u8(nw, PF_RT_SET_PRIO, r->set_prio[0]); 1288 snl_add_msg_attr_u8(nw, PF_RT_SET_PRIO_REPLY, r->set_prio[1]); 1289 snl_add_msg_attr_u8(nw, PF_RT_NAF, r->naf); 1290 1291 snl_add_msg_attr_ip6(nw, PF_RT_DIVERT_ADDRESS, &r->divert.addr.v6); 1292 snl_add_msg_attr_u16(nw, PF_RT_DIVERT_PORT, r->divert.port); 1293 1294 snl_end_attr_nested(nw, off); 1295 } 1296 1297 int 1298 pfctl_add_rule(int dev __unused, const struct pfctl_rule *r, const char *anchor, 1299 const char *anchor_call, uint32_t ticket, uint32_t pool_ticket) 1300 { 1301 struct pfctl_handle *h; 1302 int ret; 1303 1304 h = pfctl_open(PF_DEVICE); 1305 if (h == NULL) 1306 return (ENODEV); 1307 1308 ret = pfctl_add_rule_h(h, r, anchor, anchor_call, ticket, pool_ticket); 1309 1310 pfctl_close(h); 1311 1312 return (ret); 1313 } 1314 1315 int 1316 pfctl_add_rule_h(struct pfctl_handle *h, const struct pfctl_rule *r, 1317 const char *anchor, const char *anchor_call, uint32_t ticket, 1318 uint32_t pool_ticket) 1319 { 1320 struct snl_writer nw; 1321 struct snl_errmsg_data e = {}; 1322 struct nlmsghdr *hdr; 1323 uint32_t seq_id; 1324 int family_id; 1325 1326 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME); 1327 if (family_id == 0) 1328 return (ENOTSUP); 1329 1330 snl_init_writer(&h->ss, &nw); 1331 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_ADDRULE); 1332 hdr->nlmsg_flags |= NLM_F_DUMP; 1333 snl_add_msg_attr_u32(&nw, PF_ART_TICKET, ticket); 1334 snl_add_msg_attr_u32(&nw, PF_ART_POOL_TICKET, pool_ticket); 1335 snl_add_msg_attr_string(&nw, PF_ART_ANCHOR, anchor); 1336 snl_add_msg_attr_string(&nw, PF_ART_ANCHOR_CALL, anchor_call); 1337 1338 snl_add_msg_attr_pf_rule(&nw, PF_ART_RULE, r); 1339 1340 if ((hdr = snl_finalize_msg(&nw)) == NULL) 1341 return (ENXIO); 1342 1343 seq_id = hdr->nlmsg_seq; 1344 1345 if (! snl_send_message(&h->ss, hdr)) 1346 return (ENXIO); 1347 1348 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) { 1349 } 1350 1351 return (e.error); 1352 } 1353 1354 #define _IN(_field) offsetof(struct genlmsghdr, _field) 1355 #define _OUT(_field) offsetof(struct pfctl_rules_info, _field) 1356 static struct snl_attr_parser ap_getrules[] = { 1357 { .type = PF_GR_NR, .off = _OUT(nr), .cb = snl_attr_get_uint32 }, 1358 { .type = PF_GR_TICKET, .off = _OUT(ticket), .cb = snl_attr_get_uint32 }, 1359 }; 1360 #undef _IN 1361 #undef _OUT 1362 SNL_DECLARE_PARSER(getrules_parser, struct genlmsghdr, snl_f_p_empty, ap_getrules); 1363 1364 int 1365 pfctl_get_rules_info_h(struct pfctl_handle *h, struct pfctl_rules_info *rules, uint32_t ruleset, 1366 const char *path) 1367 { 1368 struct snl_errmsg_data e = {}; 1369 struct nlmsghdr *hdr; 1370 struct snl_writer nw; 1371 uint32_t seq_id; 1372 int family_id; 1373 1374 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME); 1375 if (family_id == 0) 1376 return (ENOTSUP); 1377 1378 snl_init_writer(&h->ss, &nw); 1379 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GETRULES); 1380 hdr->nlmsg_flags |= NLM_F_DUMP; 1381 1382 snl_add_msg_attr_string(&nw, PF_GR_ANCHOR, path); 1383 snl_add_msg_attr_u8(&nw, PF_GR_ACTION, ruleset); 1384 1385 hdr = snl_finalize_msg(&nw); 1386 if (hdr == NULL) 1387 return (ENOMEM); 1388 1389 seq_id = hdr->nlmsg_seq; 1390 if (! snl_send_message(&h->ss, hdr)) 1391 return (ENXIO); 1392 1393 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) { 1394 if (! snl_parse_nlmsg(&h->ss, hdr, &getrules_parser, rules)) 1395 continue; 1396 } 1397 1398 return (e.error); 1399 } 1400 1401 int 1402 pfctl_get_rules_info(int dev __unused, struct pfctl_rules_info *rules, uint32_t ruleset, 1403 const char *path) 1404 { 1405 struct pfctl_handle *h; 1406 int error; 1407 1408 h = pfctl_open(PF_DEVICE); 1409 if (h == NULL) 1410 return (ENOTSUP); 1411 error = pfctl_get_rules_info_h(h, rules, ruleset, path); 1412 pfctl_close(h); 1413 1414 return (error); 1415 } 1416 1417 int 1418 pfctl_get_rule_h(struct pfctl_handle *h, uint32_t nr, uint32_t ticket, const char *anchor, 1419 uint32_t ruleset, struct pfctl_rule *rule, char *anchor_call) 1420 { 1421 return (pfctl_get_clear_rule_h(h, nr, ticket, anchor, ruleset, rule, 1422 anchor_call, false)); 1423 } 1424 1425 int 1426 pfctl_get_rule(int dev, uint32_t nr, uint32_t ticket, const char *anchor, 1427 uint32_t ruleset, struct pfctl_rule *rule, char *anchor_call) 1428 { 1429 return (pfctl_get_clear_rule(dev, nr, ticket, anchor, ruleset, rule, 1430 anchor_call, false)); 1431 } 1432 1433 #define _OUT(_field) offsetof(struct pf_addr_wrap, _field) 1434 static const struct snl_attr_parser ap_addr_wrap[] = { 1435 { .type = PF_AT_ADDR, .off = _OUT(v.a.addr), .cb = snl_attr_get_in6_addr }, 1436 { .type = PF_AT_MASK, .off = _OUT(v.a.mask), .cb = snl_attr_get_in6_addr }, 1437 { .type = PF_AT_IFNAME, .off = _OUT(v.ifname), .arg = (void *)IFNAMSIZ,.cb = snl_attr_copy_string }, 1438 { .type = PF_AT_TABLENAME, .off = _OUT(v.tblname), .arg = (void *)PF_TABLE_NAME_SIZE, .cb = snl_attr_copy_string }, 1439 { .type = PF_AT_TYPE, .off = _OUT(type), .cb = snl_attr_get_uint8 }, 1440 { .type = PF_AT_IFLAGS, .off = _OUT(iflags), .cb = snl_attr_get_uint8 }, 1441 { .type = PF_AT_TBLCNT, .off = _OUT(p.tblcnt), .cb = snl_attr_get_uint32 }, 1442 { .type = PF_AT_DYNCNT, .off = _OUT(p.dyncnt), .cb = snl_attr_get_uint32 }, 1443 }; 1444 SNL_DECLARE_ATTR_PARSER(addr_wrap_parser, ap_addr_wrap); 1445 #undef _OUT 1446 1447 #define _OUT(_field) offsetof(struct pf_rule_addr, _field) 1448 static struct snl_attr_parser ap_rule_addr[] = { 1449 { .type = PF_RAT_ADDR, .off = _OUT(addr), .arg = &addr_wrap_parser, .cb = snl_attr_get_nested }, 1450 { .type = PF_RAT_SRC_PORT, .off = _OUT(port[0]), .cb = snl_attr_get_uint16 }, 1451 { .type = PF_RAT_DST_PORT, .off = _OUT(port[1]), .cb = snl_attr_get_uint16 }, 1452 { .type = PF_RAT_NEG, .off = _OUT(neg), .cb = snl_attr_get_uint8 }, 1453 { .type = PF_RAT_OP, .off = _OUT(port_op), .cb = snl_attr_get_uint8 }, 1454 }; 1455 #undef _OUT 1456 SNL_DECLARE_ATTR_PARSER(rule_addr_parser, ap_rule_addr); 1457 1458 struct snl_parsed_labels 1459 { 1460 char labels[PF_RULE_MAX_LABEL_COUNT][PF_RULE_LABEL_SIZE]; 1461 uint32_t i; 1462 }; 1463 1464 static bool 1465 snl_attr_get_pf_rule_labels(struct snl_state *ss, struct nlattr *nla, 1466 const void *arg __unused, void *target) 1467 { 1468 struct snl_parsed_labels *l = (struct snl_parsed_labels *)target; 1469 bool ret; 1470 1471 if (l->i >= PF_RULE_MAX_LABEL_COUNT) 1472 return (E2BIG); 1473 1474 ret = snl_attr_copy_string(ss, nla, (void *)PF_RULE_LABEL_SIZE, 1475 l->labels[l->i]); 1476 if (ret) 1477 l->i++; 1478 1479 return (ret); 1480 } 1481 1482 #define _OUT(_field) offsetof(struct nl_parsed_labels, _field) 1483 static const struct snl_attr_parser ap_labels[] = { 1484 { .type = PF_LT_LABEL, .off = 0, .cb = snl_attr_get_pf_rule_labels }, 1485 }; 1486 SNL_DECLARE_ATTR_PARSER(rule_labels_parser, ap_labels); 1487 #undef _OUT 1488 1489 static bool 1490 snl_attr_get_nested_pf_rule_labels(struct snl_state *ss, struct nlattr *nla, 1491 const void *arg __unused, void *target) 1492 { 1493 struct snl_parsed_labels parsed_labels = { }; 1494 bool error; 1495 1496 /* Assumes target points to the beginning of the structure */ 1497 error = snl_parse_header(ss, NLA_DATA(nla), NLA_DATA_LEN(nla), &rule_labels_parser, &parsed_labels); 1498 if (! error) 1499 return (error); 1500 1501 memcpy(target, parsed_labels.labels, sizeof(parsed_labels.labels)); 1502 1503 return (true); 1504 } 1505 1506 #define _OUT(_field) offsetof(struct pf_mape_portset, _field) 1507 static const struct snl_attr_parser ap_mape_portset[] = { 1508 { .type = PF_MET_OFFSET, .off = _OUT(offset), .cb = snl_attr_get_uint8 }, 1509 { .type = PF_MET_PSID_LEN, .off = _OUT(psidlen), .cb = snl_attr_get_uint8 }, 1510 {. type = PF_MET_PSID, .off = _OUT(psid), .cb = snl_attr_get_uint16 }, 1511 }; 1512 SNL_DECLARE_ATTR_PARSER(mape_portset_parser, ap_mape_portset); 1513 #undef _OUT 1514 1515 #define _OUT(_field) offsetof(struct pfctl_pool, _field) 1516 static const struct snl_attr_parser ap_pool[] = { 1517 { .type = PF_PT_KEY, .off = _OUT(key), .arg = (void *)sizeof(struct pf_poolhashkey), .cb = snl_attr_get_bytes }, 1518 { .type = PF_PT_COUNTER, .off = _OUT(counter), .cb = snl_attr_get_in6_addr }, 1519 { .type = PF_PT_TBLIDX, .off = _OUT(tblidx), .cb = snl_attr_get_uint32 }, 1520 { .type = PF_PT_PROXY_SRC_PORT, .off = _OUT(proxy_port[0]), .cb = snl_attr_get_uint16 }, 1521 { .type = PF_PT_PROXY_DST_PORT, .off = _OUT(proxy_port[1]), .cb = snl_attr_get_uint16 }, 1522 { .type = PF_PT_OPTS, .off = _OUT(opts), .cb = snl_attr_get_uint8 }, 1523 { .type = PF_PT_MAPE, .off = _OUT(mape), .arg = &mape_portset_parser, .cb = snl_attr_get_nested }, 1524 }; 1525 SNL_DECLARE_ATTR_PARSER(pool_parser, ap_pool); 1526 #undef _OUT 1527 1528 struct nl_parsed_timeouts 1529 { 1530 uint32_t timeouts[PFTM_MAX]; 1531 uint32_t i; 1532 }; 1533 1534 static bool 1535 snl_attr_get_pf_timeout(struct snl_state *ss, struct nlattr *nla, 1536 const void *arg __unused, void *target) 1537 { 1538 struct nl_parsed_timeouts *t = (struct nl_parsed_timeouts *)target; 1539 bool ret; 1540 1541 if (t->i >= PFTM_MAX) 1542 return (E2BIG); 1543 1544 ret = snl_attr_get_uint32(ss, nla, NULL, &t->timeouts[t->i]); 1545 if (ret) 1546 t->i++; 1547 1548 return (ret); 1549 } 1550 1551 #define _OUT(_field) offsetof(struct nl_parsed_timeout, _field) 1552 static const struct snl_attr_parser ap_timeouts[] = { 1553 { .type = PF_TT_TIMEOUT, .off = 0, .cb = snl_attr_get_pf_timeout }, 1554 }; 1555 SNL_DECLARE_ATTR_PARSER(timeout_parser, ap_timeouts); 1556 #undef _OUT 1557 1558 static bool 1559 snl_attr_get_nested_timeouts(struct snl_state *ss, struct nlattr *nla, 1560 const void *arg __unused, void *target) 1561 { 1562 struct nl_parsed_timeouts parsed_timeouts = { }; 1563 bool error; 1564 1565 /* Assumes target points to the beginning of the structure */ 1566 error = snl_parse_header(ss, NLA_DATA(nla), NLA_DATA_LEN(nla), &timeout_parser, &parsed_timeouts); 1567 if (! error) 1568 return (error); 1569 1570 memcpy(target, parsed_timeouts.timeouts, sizeof(parsed_timeouts.timeouts)); 1571 1572 return (true); 1573 } 1574 1575 #define _OUT(_field) offsetof(struct pf_rule_uid, _field) 1576 static const struct snl_attr_parser ap_rule_uid[] = { 1577 { .type = PF_RUT_UID_LOW, .off = _OUT(uid[0]), .cb = snl_attr_get_uint32 }, 1578 { .type = PF_RUT_UID_HIGH, .off = _OUT(uid[1]), .cb = snl_attr_get_uint32 }, 1579 { .type = PF_RUT_OP, .off = _OUT(op), .cb = snl_attr_get_uint8 }, 1580 }; 1581 SNL_DECLARE_ATTR_PARSER(rule_uid_parser, ap_rule_uid); 1582 #undef _OUT 1583 1584 struct pfctl_nl_get_rule { 1585 struct pfctl_rule r; 1586 char anchor_call[MAXPATHLEN]; 1587 }; 1588 #define _OUT(_field) offsetof(struct pfctl_nl_get_rule, _field) 1589 static struct snl_attr_parser ap_getrule[] = { 1590 { .type = PF_RT_SRC, .off = _OUT(r.src), .arg = &rule_addr_parser,.cb = snl_attr_get_nested }, 1591 { .type = PF_RT_DST, .off = _OUT(r.dst), .arg = &rule_addr_parser,.cb = snl_attr_get_nested }, 1592 { .type = PF_RT_RIDENTIFIER, .off = _OUT(r.ridentifier), .cb = snl_attr_get_uint32 }, 1593 { .type = PF_RT_LABELS, .off = _OUT(r.label), .arg = &rule_labels_parser,.cb = snl_attr_get_nested_pf_rule_labels }, 1594 { .type = PF_RT_IFNAME, .off = _OUT(r.ifname), .arg = (void *)IFNAMSIZ, .cb = snl_attr_copy_string }, 1595 { .type = PF_RT_QNAME, .off = _OUT(r.qname), .arg = (void *)PF_QNAME_SIZE, .cb = snl_attr_copy_string }, 1596 { .type = PF_RT_PQNAME, .off = _OUT(r.pqname), .arg = (void *)PF_QNAME_SIZE, .cb = snl_attr_copy_string }, 1597 { .type = PF_RT_TAGNAME, .off = _OUT(r.tagname), .arg = (void *)PF_TAG_NAME_SIZE, .cb = snl_attr_copy_string }, 1598 { .type = PF_RT_MATCH_TAGNAME, .off = _OUT(r.match_tagname), .arg = (void *)PF_TAG_NAME_SIZE, .cb = snl_attr_copy_string }, 1599 { .type = PF_RT_OVERLOAD_TBLNAME, .off = _OUT(r.overload_tblname), .arg = (void *)PF_TABLE_NAME_SIZE, .cb = snl_attr_copy_string }, 1600 { .type = PF_RT_RPOOL_RDR, .off = _OUT(r.rdr), .arg = &pool_parser, .cb = snl_attr_get_nested }, 1601 { .type = PF_RT_OS_FINGERPRINT, .off = _OUT(r.os_fingerprint), .cb = snl_attr_get_uint32 }, 1602 { .type = PF_RT_RTABLEID, .off = _OUT(r.rtableid), .cb = snl_attr_get_uint32 }, 1603 { .type = PF_RT_TIMEOUT, .off = _OUT(r.timeout), .arg = &timeout_parser, .cb = snl_attr_get_nested_timeouts }, 1604 { .type = PF_RT_MAX_STATES, .off = _OUT(r.max_states), .cb = snl_attr_get_uint32 }, 1605 { .type = PF_RT_MAX_SRC_NODES, .off = _OUT(r.max_src_nodes), .cb = snl_attr_get_uint32 }, 1606 { .type = PF_RT_MAX_SRC_STATES, .off = _OUT(r.max_src_states), .cb = snl_attr_get_uint32 }, 1607 { .type = PF_RT_MAX_SRC_CONN_RATE_LIMIT, .off = _OUT(r.max_src_conn_rate.limit), .cb = snl_attr_get_uint32 }, 1608 { .type = PF_RT_MAX_SRC_CONN_RATE_SECS, .off = _OUT(r.max_src_conn_rate.seconds), .cb = snl_attr_get_uint32 }, 1609 { .type = PF_RT_DNPIPE, .off = _OUT(r.dnpipe), .cb = snl_attr_get_uint16 }, 1610 { .type = PF_RT_DNRPIPE, .off = _OUT(r.dnrpipe), .cb = snl_attr_get_uint16 }, 1611 { .type = PF_RT_DNFLAGS, .off = _OUT(r.free_flags), .cb = snl_attr_get_uint32 }, 1612 { .type = PF_RT_NR, .off = _OUT(r.nr), .cb = snl_attr_get_uint32 }, 1613 { .type = PF_RT_PROB, .off = _OUT(r.prob), .cb = snl_attr_get_uint32 }, 1614 { .type = PF_RT_CUID, .off = _OUT(r.cuid), .cb = snl_attr_get_uint32 }, 1615 {. type = PF_RT_CPID, .off = _OUT(r.cpid), .cb = snl_attr_get_uint32 }, 1616 { .type = PF_RT_RETURN_ICMP, .off = _OUT(r.return_icmp), .cb = snl_attr_get_uint16 }, 1617 { .type = PF_RT_RETURN_ICMP6, .off = _OUT(r.return_icmp6), .cb = snl_attr_get_uint16 }, 1618 { .type = PF_RT_MAX_MSS, .off = _OUT(r.max_mss), .cb = snl_attr_get_uint16 }, 1619 { .type = PF_RT_SCRUB_FLAGS, .off = _OUT(r.scrub_flags), .cb = snl_attr_get_uint16 }, 1620 { .type = PF_RT_UID, .off = _OUT(r.uid), .arg = &rule_uid_parser, .cb = snl_attr_get_nested }, 1621 { .type = PF_RT_GID, .off = _OUT(r.gid), .arg = &rule_uid_parser, .cb = snl_attr_get_nested }, 1622 { .type = PF_RT_RULE_FLAG, .off = _OUT(r.rule_flag), .cb = snl_attr_get_uint32 }, 1623 { .type = PF_RT_ACTION, .off = _OUT(r.action), .cb = snl_attr_get_uint8 }, 1624 { .type = PF_RT_DIRECTION, .off = _OUT(r.direction), .cb = snl_attr_get_uint8 }, 1625 { .type = PF_RT_LOG, .off = _OUT(r.log), .cb = snl_attr_get_uint8 }, 1626 { .type = PF_RT_LOGIF, .off = _OUT(r.logif), .cb = snl_attr_get_uint8 }, 1627 { .type = PF_RT_QUICK, .off = _OUT(r.quick), .cb = snl_attr_get_uint8 }, 1628 { .type = PF_RT_IF_NOT, .off = _OUT(r.ifnot), .cb = snl_attr_get_uint8 }, 1629 { .type = PF_RT_MATCH_TAG_NOT, .off = _OUT(r.match_tag_not), .cb = snl_attr_get_uint8 }, 1630 { .type = PF_RT_NATPASS, .off = _OUT(r.natpass), .cb = snl_attr_get_uint8 }, 1631 { .type = PF_RT_KEEP_STATE, .off = _OUT(r.keep_state), .cb = snl_attr_get_uint8 }, 1632 { .type = PF_RT_AF, .off = _OUT(r.af), .cb = snl_attr_get_uint8 }, 1633 { .type = PF_RT_PROTO, .off = _OUT(r.proto), .cb = snl_attr_get_uint8 }, 1634 { .type = PF_RT_TYPE, .off = _OUT(r.type), .cb = snl_attr_get_uint8 }, 1635 { .type = PF_RT_CODE, .off = _OUT(r.code), .cb = snl_attr_get_uint8 }, 1636 { .type = PF_RT_FLAGS, .off = _OUT(r.flags), .cb = snl_attr_get_uint8 }, 1637 { .type = PF_RT_FLAGSET, .off = _OUT(r.flagset), .cb = snl_attr_get_uint8 }, 1638 { .type = PF_RT_MIN_TTL, .off = _OUT(r.min_ttl), .cb = snl_attr_get_uint8 }, 1639 { .type = PF_RT_ALLOW_OPTS, .off = _OUT(r.allow_opts), .cb = snl_attr_get_uint8 }, 1640 { .type = PF_RT_RT, .off = _OUT(r.rt), .cb = snl_attr_get_uint8 }, 1641 { .type = PF_RT_RETURN_TTL, .off = _OUT(r.return_ttl), .cb = snl_attr_get_uint8 }, 1642 { .type = PF_RT_TOS, .off = _OUT(r.tos), .cb = snl_attr_get_uint8 }, 1643 { .type = PF_RT_SET_TOS, .off = _OUT(r.set_tos), .cb = snl_attr_get_uint8 }, 1644 { .type = PF_RT_ANCHOR_RELATIVE, .off = _OUT(r.anchor_relative), .cb = snl_attr_get_uint8 }, 1645 { .type = PF_RT_ANCHOR_WILDCARD, .off = _OUT(r.anchor_wildcard), .cb = snl_attr_get_uint8 }, 1646 { .type = PF_RT_FLUSH, .off = _OUT(r.flush), .cb = snl_attr_get_uint8 }, 1647 { .type = PF_RT_PRIO, .off = _OUT(r.prio), .cb = snl_attr_get_uint8 }, 1648 { .type = PF_RT_SET_PRIO, .off = _OUT(r.set_prio[0]), .cb = snl_attr_get_uint8 }, 1649 { .type = PF_RT_SET_PRIO_REPLY, .off = _OUT(r.set_prio[1]), .cb = snl_attr_get_uint8 }, 1650 { .type = PF_RT_DIVERT_ADDRESS, .off = _OUT(r.divert.addr), .cb = snl_attr_get_in6_addr }, 1651 { .type = PF_RT_DIVERT_PORT, .off = _OUT(r.divert.port), .cb = snl_attr_get_uint16 }, 1652 { .type = PF_RT_PACKETS_IN, .off = _OUT(r.packets[0]), .cb = snl_attr_get_uint64 }, 1653 { .type = PF_RT_PACKETS_OUT, .off = _OUT(r.packets[1]), .cb = snl_attr_get_uint64 }, 1654 { .type = PF_RT_BYTES_IN, .off = _OUT(r.bytes[0]), .cb = snl_attr_get_uint64 }, 1655 { .type = PF_RT_BYTES_OUT, .off = _OUT(r.bytes[1]), .cb = snl_attr_get_uint64 }, 1656 { .type = PF_RT_EVALUATIONS, .off = _OUT(r.evaluations), .cb = snl_attr_get_uint64 }, 1657 { .type = PF_RT_TIMESTAMP, .off = _OUT(r.last_active_timestamp), .cb = snl_attr_get_uint64 }, 1658 { .type = PF_RT_STATES_CUR, .off = _OUT(r.states_cur), .cb = snl_attr_get_uint64 }, 1659 { .type = PF_RT_STATES_TOTAL, .off = _OUT(r.states_tot), .cb = snl_attr_get_uint64 }, 1660 { .type = PF_RT_SRC_NODES, .off = _OUT(r.src_nodes), .cb = snl_attr_get_uint64 }, 1661 { .type = PF_RT_ANCHOR_CALL, .off = _OUT(anchor_call), .arg = (void*)MAXPATHLEN, .cb = snl_attr_copy_string }, 1662 { .type = PF_RT_RCV_IFNAME, .off = _OUT(r.rcv_ifname), .arg = (void*)IFNAMSIZ, .cb = snl_attr_copy_string }, 1663 { .type = PF_RT_MAX_SRC_CONN, .off = _OUT(r.max_src_conn), .cb = snl_attr_get_uint32 }, 1664 { .type = PF_RT_RPOOL_NAT, .off = _OUT(r.nat), .arg = &pool_parser, .cb = snl_attr_get_nested }, 1665 { .type = PF_RT_NAF, .off = _OUT(r.naf), .cb = snl_attr_get_uint8 }, 1666 { .type = PF_RT_RPOOL_RT, .off = _OUT(r.route), .arg = &pool_parser, .cb = snl_attr_get_nested }, 1667 { .type = PF_RT_RCV_IFNOT, .off = _OUT(r.rcvifnot),.cb = snl_attr_get_bool }, 1668 { .type = PF_RT_SRC_NODES_LIMIT, .off = _OUT(r.src_nodes_type[PF_SN_LIMIT]), .cb = snl_attr_get_uint64 }, 1669 { .type = PF_RT_SRC_NODES_NAT, .off = _OUT(r.src_nodes_type[PF_SN_NAT]), .cb = snl_attr_get_uint64 }, 1670 { .type = PF_RT_SRC_NODES_ROUTE, .off = _OUT(r.src_nodes_type[PF_SN_ROUTE]), .cb = snl_attr_get_uint64 }, 1671 }; 1672 #undef _OUT 1673 SNL_DECLARE_PARSER(getrule_parser, struct genlmsghdr, snl_f_p_empty, ap_getrule); 1674 1675 int 1676 pfctl_get_clear_rule_h(struct pfctl_handle *h, uint32_t nr, uint32_t ticket, 1677 const char *anchor, uint32_t ruleset, struct pfctl_rule *rule, 1678 char *anchor_call, bool clear) 1679 { 1680 struct pfctl_nl_get_rule attrs = {}; 1681 struct snl_errmsg_data e = {}; 1682 struct nlmsghdr *hdr; 1683 struct snl_writer nw; 1684 uint32_t seq_id; 1685 int family_id; 1686 1687 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME); 1688 if (family_id == 0) 1689 return (ENOTSUP); 1690 1691 snl_init_writer(&h->ss, &nw); 1692 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GETRULE); 1693 hdr->nlmsg_flags |= NLM_F_DUMP; 1694 1695 snl_add_msg_attr_string(&nw, PF_GR_ANCHOR, anchor); 1696 snl_add_msg_attr_u8(&nw, PF_GR_ACTION, ruleset); 1697 snl_add_msg_attr_u32(&nw, PF_GR_NR, nr); 1698 snl_add_msg_attr_u32(&nw, PF_GR_TICKET, ticket); 1699 snl_add_msg_attr_u8(&nw, PF_GR_CLEAR, clear); 1700 1701 hdr = snl_finalize_msg(&nw); 1702 if (hdr == NULL) 1703 return (ENOMEM); 1704 1705 seq_id = hdr->nlmsg_seq; 1706 if (! snl_send_message(&h->ss, hdr)) 1707 return (ENXIO); 1708 1709 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) { 1710 if (! snl_parse_nlmsg(&h->ss, hdr, &getrule_parser, &attrs)) 1711 continue; 1712 } 1713 1714 memcpy(rule, &attrs.r, sizeof(attrs.r)); 1715 strlcpy(anchor_call, attrs.anchor_call, MAXPATHLEN); 1716 1717 return (e.error); 1718 } 1719 1720 int 1721 pfctl_get_clear_rule(int dev, uint32_t nr, uint32_t ticket, 1722 const char *anchor, uint32_t ruleset, struct pfctl_rule *rule, 1723 char *anchor_call, bool clear) 1724 { 1725 nvlist_t *nvl; 1726 int ret; 1727 1728 nvl = nvlist_create(0); 1729 if (nvl == 0) 1730 return (ENOMEM); 1731 1732 nvlist_add_number(nvl, "nr", nr); 1733 nvlist_add_number(nvl, "ticket", ticket); 1734 nvlist_add_string(nvl, "anchor", anchor); 1735 nvlist_add_number(nvl, "ruleset", ruleset); 1736 1737 if (clear) 1738 nvlist_add_bool(nvl, "clear_counter", true); 1739 1740 if ((ret = pfctl_do_ioctl(dev, DIOCGETRULENV, 8192, &nvl)) != 0) 1741 goto out; 1742 1743 pf_nvrule_to_rule(nvlist_get_nvlist(nvl, "rule"), rule); 1744 1745 if (anchor_call) 1746 strlcpy(anchor_call, nvlist_get_string(nvl, "anchor_call"), 1747 MAXPATHLEN); 1748 1749 out: 1750 nvlist_destroy(nvl); 1751 return (ret); 1752 } 1753 1754 int 1755 pfctl_set_keepcounters(int dev, bool keep) 1756 { 1757 struct pfioc_nv nv; 1758 nvlist_t *nvl; 1759 int ret; 1760 1761 nvl = nvlist_create(0); 1762 1763 nvlist_add_bool(nvl, "keep_counters", keep); 1764 1765 nv.data = nvlist_pack(nvl, &nv.len); 1766 nv.size = nv.len; 1767 1768 nvlist_destroy(nvl); 1769 1770 ret = ioctl(dev, DIOCKEEPCOUNTERS, &nv); 1771 1772 free(nv.data); 1773 return (ret); 1774 } 1775 1776 struct pfctl_creator { 1777 uint32_t id; 1778 }; 1779 #define _IN(_field) offsetof(struct genlmsghdr, _field) 1780 #define _OUT(_field) offsetof(struct pfctl_creator, _field) 1781 static struct snl_attr_parser ap_creators[] = { 1782 { .type = PF_ST_CREATORID, .off = _OUT(id), .cb = snl_attr_get_uint32 }, 1783 }; 1784 #undef _IN 1785 #undef _OUT 1786 SNL_DECLARE_PARSER(creator_parser, struct genlmsghdr, snl_f_p_empty, ap_creators); 1787 1788 static int 1789 pfctl_get_creators_nl(struct snl_state *ss, uint32_t *creators, size_t *len) 1790 { 1791 1792 int family_id = snl_get_genl_family(ss, PFNL_FAMILY_NAME); 1793 size_t i = 0; 1794 1795 struct nlmsghdr *hdr; 1796 struct snl_writer nw; 1797 1798 if (family_id == 0) 1799 return (ENOTSUP); 1800 1801 snl_init_writer(ss, &nw); 1802 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GETCREATORS); 1803 hdr->nlmsg_flags |= NLM_F_DUMP; 1804 hdr = snl_finalize_msg(&nw); 1805 if (hdr == NULL) 1806 return (ENOMEM); 1807 uint32_t seq_id = hdr->nlmsg_seq; 1808 1809 snl_send_message(ss, hdr); 1810 1811 struct snl_errmsg_data e = {}; 1812 while ((hdr = snl_read_reply_multi(ss, seq_id, &e)) != NULL) { 1813 struct pfctl_creator c; 1814 bzero(&c, sizeof(c)); 1815 1816 if (!snl_parse_nlmsg(ss, hdr, &creator_parser, &c)) 1817 continue; 1818 1819 creators[i] = c.id; 1820 i++; 1821 if (i > *len) 1822 return (E2BIG); 1823 } 1824 1825 *len = i; 1826 1827 return (0); 1828 } 1829 1830 int 1831 pfctl_get_creatorids(struct pfctl_handle *h, uint32_t *creators, size_t *len) 1832 { 1833 int error; 1834 1835 error = pfctl_get_creators_nl(&h->ss, creators, len); 1836 1837 return (error); 1838 } 1839 1840 static inline bool 1841 snl_attr_get_pfaddr(struct snl_state *ss __unused, struct nlattr *nla, 1842 const void *arg __unused, void *target) 1843 { 1844 memcpy(target, NLA_DATA(nla), NLA_DATA_LEN(nla)); 1845 return (true); 1846 } 1847 1848 static inline bool 1849 snl_attr_store_ifname(struct snl_state *ss __unused, struct nlattr *nla, 1850 const void *arg __unused, void *target) 1851 { 1852 size_t maxlen = NLA_DATA_LEN(nla); 1853 1854 if (strnlen((char *)NLA_DATA(nla), maxlen) < maxlen) { 1855 strlcpy(target, (char *)NLA_DATA(nla), maxlen); 1856 return (true); 1857 } 1858 return (false); 1859 } 1860 1861 #define _OUT(_field) offsetof(struct pfctl_state_peer, _field) 1862 static const struct snl_attr_parser nla_p_speer[] = { 1863 { .type = PF_STP_SEQLO, .off = _OUT(seqlo), .cb = snl_attr_get_uint32 }, 1864 { .type = PF_STP_SEQHI, .off = _OUT(seqhi), .cb = snl_attr_get_uint32 }, 1865 { .type = PF_STP_SEQDIFF, .off = _OUT(seqdiff), .cb = snl_attr_get_uint32 }, 1866 { .type = PF_STP_STATE, .off = _OUT(state), .cb = snl_attr_get_uint8 }, 1867 { .type = PF_STP_WSCALE, .off = _OUT(wscale), .cb = snl_attr_get_uint8 }, 1868 }; 1869 SNL_DECLARE_ATTR_PARSER(speer_parser, nla_p_speer); 1870 #undef _OUT 1871 1872 #define _OUT(_field) offsetof(struct pfctl_state_key, _field) 1873 static const struct snl_attr_parser nla_p_skey[] = { 1874 { .type = PF_STK_ADDR0, .off = _OUT(addr[0]), .cb = snl_attr_get_pfaddr }, 1875 { .type = PF_STK_ADDR1, .off = _OUT(addr[1]), .cb = snl_attr_get_pfaddr }, 1876 { .type = PF_STK_PORT0, .off = _OUT(port[0]), .cb = snl_attr_get_uint16 }, 1877 { .type = PF_STK_PORT1, .off = _OUT(port[1]), .cb = snl_attr_get_uint16 }, 1878 { .type = PF_STK_AF, .off = _OUT(af), .cb = snl_attr_get_uint8 }, 1879 { .type = PF_STK_PROTO, .off = _OUT(proto), .cb = snl_attr_get_uint16 }, 1880 }; 1881 SNL_DECLARE_ATTR_PARSER(skey_parser, nla_p_skey); 1882 #undef _OUT 1883 1884 #define _IN(_field) offsetof(struct genlmsghdr, _field) 1885 #define _OUT(_field) offsetof(struct pfctl_state, _field) 1886 static struct snl_attr_parser ap_state[] = { 1887 { .type = PF_ST_ID, .off = _OUT(id), .cb = snl_attr_get_uint64 }, 1888 { .type = PF_ST_CREATORID, .off = _OUT(creatorid), .cb = snl_attr_get_uint32 }, 1889 { .type = PF_ST_IFNAME, .off = _OUT(ifname), .cb = snl_attr_store_ifname }, 1890 { .type = PF_ST_ORIG_IFNAME, .off = _OUT(orig_ifname), .cb = snl_attr_store_ifname }, 1891 { .type = PF_ST_KEY_WIRE, .off = _OUT(key[0]), .arg = &skey_parser, .cb = snl_attr_get_nested }, 1892 { .type = PF_ST_KEY_STACK, .off = _OUT(key[1]), .arg = &skey_parser, .cb = snl_attr_get_nested }, 1893 { .type = PF_ST_PEER_SRC, .off = _OUT(src), .arg = &speer_parser, .cb = snl_attr_get_nested }, 1894 { .type = PF_ST_PEER_DST, .off = _OUT(dst), .arg = &speer_parser, .cb = snl_attr_get_nested }, 1895 { .type = PF_ST_RT_ADDR, .off = _OUT(rt_addr), .cb = snl_attr_get_pfaddr }, 1896 { .type = PF_ST_RULE, .off = _OUT(rule), .cb = snl_attr_get_uint32 }, 1897 { .type = PF_ST_ANCHOR, .off = _OUT(anchor), .cb = snl_attr_get_uint32 }, 1898 { .type = PF_ST_NAT_RULE, .off = _OUT(nat_rule), .cb = snl_attr_get_uint32 }, 1899 { .type = PF_ST_CREATION, .off = _OUT(creation), .cb = snl_attr_get_uint32 }, 1900 { .type = PF_ST_EXPIRE, .off = _OUT(expire), .cb = snl_attr_get_uint32 }, 1901 { .type = PF_ST_PACKETS0, .off = _OUT(packets[0]), .cb = snl_attr_get_uint64 }, 1902 { .type = PF_ST_PACKETS1, .off = _OUT(packets[1]), .cb = snl_attr_get_uint64 }, 1903 { .type = PF_ST_BYTES0, .off = _OUT(bytes[0]), .cb = snl_attr_get_uint64 }, 1904 { .type = PF_ST_BYTES1, .off = _OUT(bytes[1]), .cb = snl_attr_get_uint64 }, 1905 { .type = PF_ST_DIRECTION, .off = _OUT(direction), .cb = snl_attr_get_uint8 }, 1906 { .type = PF_ST_LOG, .off = _OUT(log), .cb = snl_attr_get_uint8 }, 1907 { .type = PF_ST_STATE_FLAGS, .off = _OUT(state_flags), .cb = snl_attr_get_uint16 }, 1908 { .type = PF_ST_SYNC_FLAGS, .off = _OUT(sync_flags), .cb = snl_attr_get_uint8 }, 1909 { .type = PF_ST_RTABLEID, .off = _OUT(rtableid), .cb = snl_attr_get_int32 }, 1910 { .type = PF_ST_MIN_TTL, .off = _OUT(min_ttl), .cb = snl_attr_get_uint8 }, 1911 { .type = PF_ST_MAX_MSS, .off = _OUT(max_mss), .cb = snl_attr_get_uint16 }, 1912 { .type = PF_ST_DNPIPE, .off = _OUT(dnpipe), .cb = snl_attr_get_uint16 }, 1913 { .type = PF_ST_DNRPIPE, .off = _OUT(dnrpipe), .cb = snl_attr_get_uint16 }, 1914 { .type = PF_ST_RT, .off = _OUT(rt), .cb = snl_attr_get_uint8 }, 1915 { .type = PF_ST_RT_IFNAME, .off = _OUT(rt_ifname), .cb = snl_attr_store_ifname }, 1916 { .type = PF_ST_SRC_NODE_FLAGS, .off = _OUT(src_node_flags), .cb = snl_attr_get_uint8 }, 1917 }; 1918 #undef _IN 1919 #undef _OUT 1920 SNL_DECLARE_PARSER(state_parser, struct genlmsghdr, snl_f_p_empty, ap_state); 1921 1922 static const struct snl_hdr_parser *all_parsers[] = { 1923 &state_parser, &skey_parser, &speer_parser, 1924 &creator_parser, &getrules_parser 1925 }; 1926 1927 static int 1928 pfctl_get_states_nl(struct pfctl_state_filter *filter, struct snl_state *ss, pfctl_get_state_fn f, void *arg) 1929 { 1930 SNL_VERIFY_PARSERS(all_parsers); 1931 int family_id = snl_get_genl_family(ss, PFNL_FAMILY_NAME); 1932 int ret; 1933 1934 struct nlmsghdr *hdr; 1935 struct snl_writer nw; 1936 1937 if (family_id == 0) 1938 return (ENOTSUP); 1939 1940 snl_init_writer(ss, &nw); 1941 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GETSTATES); 1942 hdr->nlmsg_flags |= NLM_F_DUMP; 1943 snl_add_msg_attr_string(&nw, PF_ST_IFNAME, filter->ifname); 1944 snl_add_msg_attr_u16(&nw, PF_ST_PROTO, filter->proto); 1945 snl_add_msg_attr_u8(&nw, PF_ST_AF, filter->af); 1946 snl_add_msg_attr_ip6(&nw, PF_ST_FILTER_ADDR, &filter->addr.v6); 1947 snl_add_msg_attr_ip6(&nw, PF_ST_FILTER_MASK, &filter->mask.v6); 1948 1949 hdr = snl_finalize_msg(&nw); 1950 if (hdr == NULL) 1951 return (ENOMEM); 1952 1953 uint32_t seq_id = hdr->nlmsg_seq; 1954 1955 snl_send_message(ss, hdr); 1956 1957 struct snl_errmsg_data e = {}; 1958 while ((hdr = snl_read_reply_multi(ss, seq_id, &e)) != NULL) { 1959 struct pfctl_state s; 1960 bzero(&s, sizeof(s)); 1961 if (!snl_parse_nlmsg(ss, hdr, &state_parser, &s)) 1962 continue; 1963 1964 ret = f(&s, arg); 1965 if (ret != 0) 1966 return (ret); 1967 } 1968 1969 return (0); 1970 } 1971 1972 int 1973 pfctl_get_states_iter(pfctl_get_state_fn f, void *arg) 1974 { 1975 struct pfctl_state_filter filter = {}; 1976 return (pfctl_get_filtered_states_iter(&filter, f, arg)); 1977 } 1978 1979 int 1980 pfctl_get_filtered_states_iter(struct pfctl_state_filter *filter, pfctl_get_state_fn f, void *arg) 1981 { 1982 struct snl_state ss = {}; 1983 int error; 1984 1985 snl_init(&ss, NETLINK_GENERIC); 1986 error = pfctl_get_states_nl(filter, &ss, f, arg); 1987 snl_free(&ss); 1988 1989 return (error); 1990 } 1991 1992 static int 1993 pfctl_append_states(struct pfctl_state *s, void *arg) 1994 { 1995 struct pfctl_state *new; 1996 struct pfctl_states *states = (struct pfctl_states *)arg; 1997 1998 new = malloc(sizeof(*s)); 1999 if (new == NULL) 2000 return (ENOMEM); 2001 2002 memcpy(new, s, sizeof(*s)); 2003 2004 TAILQ_INSERT_TAIL(&states->states, new, entry); 2005 2006 return (0); 2007 } 2008 2009 int 2010 pfctl_get_states(int dev __unused, struct pfctl_states *states) 2011 { 2012 int ret; 2013 2014 bzero(states, sizeof(*states)); 2015 TAILQ_INIT(&states->states); 2016 2017 ret = pfctl_get_states_iter(pfctl_append_states, states); 2018 if (ret != 0) { 2019 pfctl_free_states(states); 2020 return (ret); 2021 } 2022 2023 return (0); 2024 } 2025 2026 void 2027 pfctl_free_states(struct pfctl_states *states) 2028 { 2029 struct pfctl_state *s, *tmp; 2030 2031 TAILQ_FOREACH_SAFE(s, &states->states, entry, tmp) { 2032 free(s); 2033 } 2034 2035 bzero(states, sizeof(*states)); 2036 } 2037 2038 struct pfctl_nl_clear_states { 2039 uint32_t killed; 2040 }; 2041 #define _OUT(_field) offsetof(struct pfctl_nl_clear_states, _field) 2042 static struct snl_attr_parser ap_clear_states[] = { 2043 { .type = PF_CS_KILLED, .off = _OUT(killed), .cb = snl_attr_get_uint32 }, 2044 }; 2045 #undef _OUT 2046 SNL_DECLARE_PARSER(clear_states_parser, struct genlmsghdr, snl_f_p_empty, ap_clear_states); 2047 2048 static int 2049 _pfctl_clear_states_h(struct pfctl_handle *h, const struct pfctl_kill *kill, 2050 unsigned int *killed, int cmd) 2051 { 2052 struct snl_writer nw; 2053 struct snl_errmsg_data e = {}; 2054 struct pfctl_nl_clear_states attrs = {}; 2055 struct nlmsghdr *hdr; 2056 uint32_t seq_id; 2057 int family_id; 2058 2059 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME); 2060 if (family_id == 0) 2061 return (ENOTSUP); 2062 2063 snl_init_writer(&h->ss, &nw); 2064 hdr = snl_create_genl_msg_request(&nw, family_id, cmd); 2065 hdr->nlmsg_flags |= NLM_F_DUMP; 2066 2067 snl_add_msg_attr_u64(&nw, PF_CS_CMP_ID, kill->cmp.id); 2068 snl_add_msg_attr_u32(&nw, PF_CS_CMP_CREATORID, htonl(kill->cmp.creatorid)); 2069 snl_add_msg_attr_u8(&nw, PF_CS_CMP_DIR, kill->cmp.direction); 2070 snl_add_msg_attr_u8(&nw, PF_CS_AF, kill->af); 2071 snl_add_msg_attr_u8(&nw, PF_CS_PROTO, kill->proto); 2072 snl_add_msg_attr_rule_addr(&nw, PF_CS_SRC, &kill->src); 2073 snl_add_msg_attr_rule_addr(&nw, PF_CS_DST, &kill->dst); 2074 snl_add_msg_attr_rule_addr(&nw, PF_CS_RT_ADDR, &kill->rt_addr); 2075 snl_add_msg_attr_string(&nw, PF_CS_IFNAME, kill->ifname); 2076 snl_add_msg_attr_string(&nw, PF_CS_LABEL, kill->label); 2077 snl_add_msg_attr_bool(&nw, PF_CS_KILL_MATCH, kill->kill_match); 2078 snl_add_msg_attr_bool(&nw, PF_CS_NAT, kill->nat); 2079 2080 if ((hdr = snl_finalize_msg(&nw)) == NULL) 2081 return (ENXIO); 2082 2083 seq_id = hdr->nlmsg_seq; 2084 2085 if (! snl_send_message(&h->ss, hdr)) 2086 return (ENXIO); 2087 2088 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) { 2089 if (! snl_parse_nlmsg(&h->ss, hdr, &clear_states_parser, &attrs)) 2090 continue; 2091 } 2092 2093 if (killed) 2094 *killed = attrs.killed; 2095 2096 return (e.error); 2097 } 2098 2099 int 2100 pfctl_clear_states_h(struct pfctl_handle *h, const struct pfctl_kill *kill, 2101 unsigned int *killed) 2102 { 2103 return(_pfctl_clear_states_h(h, kill, killed, PFNL_CMD_CLRSTATES)); 2104 } 2105 2106 int 2107 pfctl_kill_states_h(struct pfctl_handle *h, const struct pfctl_kill *kill, 2108 unsigned int *killed) 2109 { 2110 return(_pfctl_clear_states_h(h, kill, killed, PFNL_CMD_KILLSTATES)); 2111 } 2112 2113 static int 2114 _pfctl_clear_states(int dev __unused, const struct pfctl_kill *kill, 2115 unsigned int *killed, uint64_t cmd) 2116 { 2117 struct pfctl_handle *h; 2118 int ret; 2119 2120 h = pfctl_open(PF_DEVICE); 2121 if (h == NULL) 2122 return (ENODEV); 2123 2124 ret = _pfctl_clear_states_h(h, kill, killed, cmd); 2125 pfctl_close(h); 2126 2127 return (ret); 2128 } 2129 2130 int 2131 pfctl_clear_states(int dev __unused, const struct pfctl_kill *kill, 2132 unsigned int *killed) 2133 { 2134 return (_pfctl_clear_states(dev, kill, killed, PFNL_CMD_CLRSTATES)); 2135 } 2136 2137 int 2138 pfctl_kill_states(int dev __unused, const struct pfctl_kill *kill, unsigned int *killed) 2139 { 2140 return (_pfctl_clear_states(dev, kill, killed, PFNL_CMD_KILLSTATES)); 2141 } 2142 2143 int 2144 pfctl_clear_rules(int dev, const char *anchorname) 2145 { 2146 struct pfioc_trans trans; 2147 struct pfioc_trans_e transe[2]; 2148 int ret; 2149 2150 bzero(&trans, sizeof(trans)); 2151 bzero(&transe, sizeof(transe)); 2152 2153 transe[0].rs_num = PF_RULESET_SCRUB; 2154 if (strlcpy(transe[0].anchor, anchorname, sizeof(transe[0].anchor)) 2155 >= sizeof(transe[0].anchor)) 2156 return (E2BIG); 2157 2158 transe[1].rs_num = PF_RULESET_FILTER; 2159 if (strlcpy(transe[1].anchor, anchorname, sizeof(transe[1].anchor)) 2160 >= sizeof(transe[1].anchor)) 2161 return (E2BIG); 2162 2163 trans.size = 2; 2164 trans.esize = sizeof(transe[0]); 2165 trans.array = transe; 2166 2167 ret = ioctl(dev, DIOCXBEGIN, &trans); 2168 if (ret != 0) 2169 return (errno); 2170 ret = ioctl(dev, DIOCXCOMMIT, &trans); 2171 if (ret != 0) 2172 return (errno); 2173 2174 return (0); 2175 } 2176 2177 int 2178 pfctl_clear_nat(int dev, const char *anchorname) 2179 { 2180 struct pfioc_trans trans; 2181 struct pfioc_trans_e transe[3]; 2182 int ret; 2183 2184 bzero(&trans, sizeof(trans)); 2185 bzero(&transe, sizeof(transe)); 2186 2187 transe[0].rs_num = PF_RULESET_NAT; 2188 if (strlcpy(transe[0].anchor, anchorname, sizeof(transe[0].anchor)) 2189 >= sizeof(transe[0].anchor)) 2190 return (E2BIG); 2191 2192 transe[1].rs_num = PF_RULESET_BINAT; 2193 if (strlcpy(transe[1].anchor, anchorname, sizeof(transe[1].anchor)) 2194 >= sizeof(transe[0].anchor)) 2195 return (E2BIG); 2196 2197 transe[2].rs_num = PF_RULESET_RDR; 2198 if (strlcpy(transe[2].anchor, anchorname, sizeof(transe[2].anchor)) 2199 >= sizeof(transe[2].anchor)) 2200 return (E2BIG); 2201 2202 trans.size = 3; 2203 trans.esize = sizeof(transe[0]); 2204 trans.array = transe; 2205 2206 ret = ioctl(dev, DIOCXBEGIN, &trans); 2207 if (ret != 0) 2208 return (errno); 2209 ret = ioctl(dev, DIOCXCOMMIT, &trans); 2210 if (ret != 0) 2211 return (errno); 2212 2213 return (0); 2214 } 2215 2216 int 2217 pfctl_clear_eth_rules(int dev, const char *anchorname) 2218 { 2219 struct pfioc_trans trans; 2220 struct pfioc_trans_e transe; 2221 int ret; 2222 2223 bzero(&trans, sizeof(trans)); 2224 bzero(&transe, sizeof(transe)); 2225 2226 transe.rs_num = PF_RULESET_ETH; 2227 if (strlcpy(transe.anchor, anchorname, sizeof(transe.anchor)) 2228 >= sizeof(transe.anchor)) 2229 return (E2BIG); 2230 2231 trans.size = 1; 2232 trans.esize = sizeof(transe); 2233 trans.array = &transe; 2234 2235 ret = ioctl(dev, DIOCXBEGIN, &trans); 2236 if (ret != 0) 2237 return (errno); 2238 ret = ioctl(dev, DIOCXCOMMIT, &trans); 2239 if (ret != 0) 2240 return (errno); 2241 2242 return (0); 2243 } 2244 2245 static int 2246 _pfctl_get_limit(int dev, const int index, uint *limit) 2247 { 2248 struct pfioc_limit pl; 2249 2250 bzero(&pl, sizeof(pl)); 2251 pl.index = index; 2252 2253 if (ioctl(dev, DIOCGETLIMIT, &pl) == -1) 2254 return (errno); 2255 2256 *limit = pl.limit; 2257 2258 return (0); 2259 } 2260 2261 int 2262 pfctl_set_syncookies(int dev, const struct pfctl_syncookies *s) 2263 { 2264 struct pfioc_nv nv; 2265 nvlist_t *nvl; 2266 int ret; 2267 uint state_limit; 2268 uint64_t lim, hi, lo; 2269 2270 ret = _pfctl_get_limit(dev, PF_LIMIT_STATES, &state_limit); 2271 if (ret != 0) 2272 return (ret); 2273 2274 lim = state_limit; 2275 hi = lim * s->highwater / 100; 2276 lo = lim * s->lowwater / 100; 2277 2278 if (lo == hi) 2279 hi++; 2280 2281 nvl = nvlist_create(0); 2282 2283 nvlist_add_bool(nvl, "enabled", s->mode != PFCTL_SYNCOOKIES_NEVER); 2284 nvlist_add_bool(nvl, "adaptive", s->mode == PFCTL_SYNCOOKIES_ADAPTIVE); 2285 nvlist_add_number(nvl, "highwater", hi); 2286 nvlist_add_number(nvl, "lowwater", lo); 2287 2288 nv.data = nvlist_pack(nvl, &nv.len); 2289 nv.size = nv.len; 2290 nvlist_destroy(nvl); 2291 nvl = NULL; 2292 2293 ret = ioctl(dev, DIOCSETSYNCOOKIES, &nv); 2294 2295 free(nv.data); 2296 if (ret != 0) 2297 return (errno); 2298 2299 return (0); 2300 } 2301 2302 int 2303 pfctl_get_syncookies(int dev, struct pfctl_syncookies *s) 2304 { 2305 nvlist_t *nvl; 2306 int ret; 2307 uint state_limit; 2308 bool enabled, adaptive; 2309 2310 ret = _pfctl_get_limit(dev, PF_LIMIT_STATES, &state_limit); 2311 if (ret != 0) 2312 return (ret); 2313 2314 bzero(s, sizeof(*s)); 2315 2316 nvl = nvlist_create(0); 2317 2318 if ((ret = pfctl_do_ioctl(dev, DIOCGETSYNCOOKIES, 256, &nvl)) != 0) { 2319 ret = errno; 2320 goto out; 2321 } 2322 2323 enabled = nvlist_get_bool(nvl, "enabled"); 2324 adaptive = nvlist_get_bool(nvl, "adaptive"); 2325 2326 if (enabled) { 2327 if (adaptive) 2328 s->mode = PFCTL_SYNCOOKIES_ADAPTIVE; 2329 else 2330 s->mode = PFCTL_SYNCOOKIES_ALWAYS; 2331 } else { 2332 s->mode = PFCTL_SYNCOOKIES_NEVER; 2333 } 2334 2335 s->highwater = nvlist_get_number(nvl, "highwater") * 100 / state_limit; 2336 s->lowwater = nvlist_get_number(nvl, "lowwater") * 100 / state_limit; 2337 s->halfopen_states = nvlist_get_number(nvl, "halfopen_states"); 2338 2339 out: 2340 nvlist_destroy(nvl); 2341 return (ret); 2342 } 2343 2344 int 2345 pfctl_table_add_addrs(int dev, struct pfr_table *tbl, struct pfr_addr 2346 *addr, int size, int *nadd, int flags) 2347 { 2348 struct pfioc_table io; 2349 2350 if (tbl == NULL || size < 0 || (size && addr == NULL)) { 2351 return (EINVAL); 2352 } 2353 bzero(&io, sizeof io); 2354 io.pfrio_flags = flags; 2355 io.pfrio_table = *tbl; 2356 io.pfrio_buffer = addr; 2357 io.pfrio_esize = sizeof(*addr); 2358 io.pfrio_size = size; 2359 2360 if (ioctl(dev, DIOCRADDADDRS, &io)) 2361 return (errno); 2362 if (nadd != NULL) 2363 *nadd = io.pfrio_nadd; 2364 return (0); 2365 } 2366 2367 int 2368 pfctl_table_del_addrs(int dev, struct pfr_table *tbl, struct pfr_addr 2369 *addr, int size, int *ndel, int flags) 2370 { 2371 struct pfioc_table io; 2372 2373 if (tbl == NULL || size < 0 || (size && addr == NULL)) { 2374 return (EINVAL); 2375 } 2376 bzero(&io, sizeof io); 2377 io.pfrio_flags = flags; 2378 io.pfrio_table = *tbl; 2379 io.pfrio_buffer = addr; 2380 io.pfrio_esize = sizeof(*addr); 2381 io.pfrio_size = size; 2382 2383 if (ioctl(dev, DIOCRDELADDRS, &io)) 2384 return (errno); 2385 if (ndel != NULL) 2386 *ndel = io.pfrio_ndel; 2387 return (0); 2388 } 2389 2390 int 2391 pfctl_table_set_addrs(int dev, struct pfr_table *tbl, struct pfr_addr 2392 *addr, int size, int *size2, int *nadd, int *ndel, int *nchange, int flags) 2393 { 2394 struct pfioc_table io; 2395 2396 if (tbl == NULL || size < 0 || (size && addr == NULL)) { 2397 return (EINVAL); 2398 } 2399 bzero(&io, sizeof io); 2400 io.pfrio_flags = flags; 2401 io.pfrio_table = *tbl; 2402 io.pfrio_buffer = addr; 2403 io.pfrio_esize = sizeof(*addr); 2404 io.pfrio_size = size; 2405 io.pfrio_size2 = (size2 != NULL) ? *size2 : 0; 2406 if (ioctl(dev, DIOCRSETADDRS, &io)) 2407 return (errno); 2408 if (nadd != NULL) 2409 *nadd = io.pfrio_nadd; 2410 if (ndel != NULL) 2411 *ndel = io.pfrio_ndel; 2412 if (nchange != NULL) 2413 *nchange = io.pfrio_nchange; 2414 if (size2 != NULL) 2415 *size2 = io.pfrio_size2; 2416 return (0); 2417 } 2418 2419 int pfctl_table_get_addrs(int dev, struct pfr_table *tbl, struct pfr_addr *addr, 2420 int *size, int flags) 2421 { 2422 struct pfioc_table io; 2423 2424 if (tbl == NULL || size == NULL || *size < 0 || 2425 (*size && addr == NULL)) { 2426 return (EINVAL); 2427 } 2428 bzero(&io, sizeof io); 2429 io.pfrio_flags = flags; 2430 io.pfrio_table = *tbl; 2431 io.pfrio_buffer = addr; 2432 io.pfrio_esize = sizeof(*addr); 2433 io.pfrio_size = *size; 2434 if (ioctl(dev, DIOCRGETADDRS, &io)) 2435 return (errno); 2436 *size = io.pfrio_size; 2437 return (0); 2438 } 2439 2440 int 2441 pfctl_set_statusif(struct pfctl_handle *h, const char *ifname) 2442 { 2443 struct snl_writer nw; 2444 struct snl_errmsg_data e = {}; 2445 struct nlmsghdr *hdr; 2446 uint32_t seq_id; 2447 int family_id; 2448 2449 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME); 2450 if (family_id == 0) 2451 return (ENOTSUP); 2452 2453 snl_init_writer(&h->ss, &nw); 2454 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_SET_STATUSIF); 2455 2456 snl_add_msg_attr_string(&nw, PF_SS_IFNAME, ifname); 2457 2458 if ((hdr = snl_finalize_msg(&nw)) == NULL) 2459 return (ENXIO); 2460 2461 seq_id = hdr->nlmsg_seq; 2462 2463 if (! snl_send_message(&h->ss, hdr)) 2464 return (ENXIO); 2465 2466 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) { 2467 } 2468 2469 return (e.error); 2470 } 2471 2472 #define _IN(_field) offsetof(struct genlmsghdr, _field) 2473 #define _OUT(_field) offsetof(struct pfctl_natlook, _field) 2474 static struct snl_attr_parser ap_natlook[] = { 2475 { .type = PF_NL_SRC_ADDR, .off = _OUT(saddr), .cb = snl_attr_get_in6_addr }, 2476 { .type = PF_NL_DST_ADDR, .off = _OUT(daddr), .cb = snl_attr_get_in6_addr }, 2477 { .type = PF_NL_SRC_PORT, .off = _OUT(sport), .cb = snl_attr_get_uint16 }, 2478 { .type = PF_NL_DST_PORT, .off = _OUT(dport), .cb = snl_attr_get_uint16 }, 2479 }; 2480 #undef _IN 2481 #undef _OUT 2482 SNL_DECLARE_PARSER(natlook_parser, struct genlmsghdr, snl_f_p_empty, ap_natlook); 2483 2484 int 2485 pfctl_natlook(struct pfctl_handle *h, const struct pfctl_natlook_key *k, 2486 struct pfctl_natlook *r) 2487 { 2488 struct snl_writer nw; 2489 struct snl_errmsg_data e = {}; 2490 struct nlmsghdr *hdr; 2491 uint32_t seq_id; 2492 int family_id; 2493 2494 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME); 2495 if (family_id == 0) 2496 return (ENOTSUP); 2497 2498 snl_init_writer(&h->ss, &nw); 2499 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_NATLOOK); 2500 hdr->nlmsg_flags |= NLM_F_DUMP; 2501 2502 snl_add_msg_attr_u8(&nw, PF_NL_AF, k->af); 2503 snl_add_msg_attr_u8(&nw, PF_NL_DIRECTION, k->direction); 2504 snl_add_msg_attr_u8(&nw, PF_NL_PROTO, k->proto); 2505 snl_add_msg_attr_ip6(&nw, PF_NL_SRC_ADDR, &k->saddr.v6); 2506 snl_add_msg_attr_ip6(&nw, PF_NL_DST_ADDR, &k->daddr.v6); 2507 snl_add_msg_attr_u16(&nw, PF_NL_SRC_PORT, k->sport); 2508 snl_add_msg_attr_u16(&nw, PF_NL_DST_PORT, k->dport); 2509 2510 if ((hdr = snl_finalize_msg(&nw)) == NULL) 2511 return (ENXIO); 2512 2513 seq_id = hdr->nlmsg_seq; 2514 2515 if (! snl_send_message(&h->ss, hdr)) 2516 return (ENXIO); 2517 2518 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) { 2519 if (! snl_parse_nlmsg(&h->ss, hdr, &natlook_parser, r)) 2520 continue; 2521 } 2522 2523 return (e.error); 2524 } 2525 2526 int 2527 pfctl_set_debug(struct pfctl_handle *h, uint32_t level) 2528 { 2529 struct snl_writer nw; 2530 struct snl_errmsg_data e = {}; 2531 struct nlmsghdr *hdr; 2532 uint32_t seq_id; 2533 int family_id; 2534 2535 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME); 2536 if (family_id == 0) 2537 return (ENOTSUP); 2538 2539 snl_init_writer(&h->ss, &nw); 2540 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_SET_DEBUG); 2541 2542 snl_add_msg_attr_u32(&nw, PF_SD_LEVEL, level); 2543 2544 if ((hdr = snl_finalize_msg(&nw)) == NULL) 2545 return (ENXIO); 2546 2547 seq_id = hdr->nlmsg_seq; 2548 2549 if (! snl_send_message(&h->ss, hdr)) 2550 return (ENXIO); 2551 2552 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) { 2553 } 2554 2555 return (e.error); 2556 } 2557 2558 int 2559 pfctl_set_timeout(struct pfctl_handle *h, uint32_t timeout, uint32_t seconds) 2560 { 2561 struct snl_writer nw; 2562 struct snl_errmsg_data e = {}; 2563 struct nlmsghdr *hdr; 2564 uint32_t seq_id; 2565 int family_id; 2566 2567 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME); 2568 if (family_id == 0) 2569 return (ENOTSUP); 2570 2571 snl_init_writer(&h->ss, &nw); 2572 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_SET_TIMEOUT); 2573 2574 snl_add_msg_attr_u32(&nw, PF_TO_TIMEOUT, timeout); 2575 snl_add_msg_attr_u32(&nw, PF_TO_SECONDS, seconds); 2576 2577 if ((hdr = snl_finalize_msg(&nw)) == NULL) 2578 return (ENXIO); 2579 2580 seq_id = hdr->nlmsg_seq; 2581 2582 if (! snl_send_message(&h->ss, hdr)) 2583 return (ENXIO); 2584 2585 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) { 2586 } 2587 2588 return (e.error); 2589 } 2590 2591 struct pfctl_nl_timeout { 2592 uint32_t seconds; 2593 }; 2594 #define _OUT(_field) offsetof(struct pfctl_nl_timeout, _field) 2595 static struct snl_attr_parser ap_get_timeout[] = { 2596 { .type = PF_TO_SECONDS, .off = _OUT(seconds), .cb = snl_attr_get_uint32 }, 2597 }; 2598 #undef _OUT 2599 SNL_DECLARE_PARSER(get_timeout_parser, struct genlmsghdr, snl_f_p_empty, ap_get_timeout); 2600 2601 int 2602 pfctl_get_timeout(struct pfctl_handle *h, uint32_t timeout, uint32_t *seconds) 2603 { 2604 struct snl_writer nw; 2605 struct pfctl_nl_timeout to = {}; 2606 struct snl_errmsg_data e = {}; 2607 struct nlmsghdr *hdr; 2608 uint32_t seq_id; 2609 int family_id; 2610 2611 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME); 2612 if (family_id == 0) 2613 return (ENOTSUP); 2614 2615 snl_init_writer(&h->ss, &nw); 2616 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GET_TIMEOUT); 2617 hdr->nlmsg_flags |= NLM_F_DUMP; 2618 2619 snl_add_msg_attr_u32(&nw, PF_TO_TIMEOUT, timeout); 2620 2621 if ((hdr = snl_finalize_msg(&nw)) == NULL) 2622 return (ENXIO); 2623 2624 seq_id = hdr->nlmsg_seq; 2625 2626 if (! snl_send_message(&h->ss, hdr)) 2627 return (ENXIO); 2628 2629 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) { 2630 if (! snl_parse_nlmsg(&h->ss, hdr, &get_timeout_parser, &to)) 2631 continue; 2632 } 2633 2634 if (seconds != NULL) 2635 *seconds = to.seconds; 2636 2637 return (e.error); 2638 } 2639 2640 int 2641 pfctl_set_limit(struct pfctl_handle *h, const int index, const uint limit) 2642 { 2643 struct snl_writer nw; 2644 struct snl_errmsg_data e = {}; 2645 struct nlmsghdr *hdr; 2646 uint32_t seq_id; 2647 int family_id; 2648 2649 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME); 2650 if (family_id == 0) 2651 return (ENOTSUP); 2652 2653 snl_init_writer(&h->ss, &nw); 2654 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_SET_LIMIT); 2655 2656 snl_add_msg_attr_u32(&nw, PF_LI_INDEX, index); 2657 snl_add_msg_attr_u32(&nw, PF_LI_LIMIT, limit); 2658 2659 if ((hdr = snl_finalize_msg(&nw)) == NULL) 2660 return (ENXIO); 2661 2662 seq_id = hdr->nlmsg_seq; 2663 2664 if (! snl_send_message(&h->ss, hdr)) 2665 return (ENXIO); 2666 2667 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) { 2668 } 2669 2670 return (e.error); 2671 } 2672 2673 struct pfctl_nl_limit { 2674 unsigned int limit; 2675 }; 2676 #define _OUT(_field) offsetof(struct pfctl_nl_limit, _field) 2677 static struct snl_attr_parser ap_get_limit[] = { 2678 { .type = PF_LI_LIMIT, .off = _OUT(limit), .cb = snl_attr_get_uint32 }, 2679 }; 2680 #undef _OUT 2681 SNL_DECLARE_PARSER(get_limit_parser, struct genlmsghdr, snl_f_p_empty, ap_get_limit); 2682 2683 int 2684 pfctl_get_limit(struct pfctl_handle *h, const int index, uint *limit) 2685 { 2686 struct snl_writer nw; 2687 struct pfctl_nl_limit li = {}; 2688 struct snl_errmsg_data e = {}; 2689 struct nlmsghdr *hdr; 2690 uint32_t seq_id; 2691 int family_id; 2692 2693 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME); 2694 if (family_id == 0) 2695 return (ENOTSUP); 2696 2697 snl_init_writer(&h->ss, &nw); 2698 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GET_LIMIT); 2699 hdr->nlmsg_flags |= NLM_F_DUMP; 2700 2701 snl_add_msg_attr_u32(&nw, PF_LI_INDEX, index); 2702 2703 if ((hdr = snl_finalize_msg(&nw)) == NULL) 2704 return (ENXIO); 2705 2706 seq_id = hdr->nlmsg_seq; 2707 2708 if (! snl_send_message(&h->ss, hdr)) 2709 return (ENXIO); 2710 2711 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) { 2712 if (! snl_parse_nlmsg(&h->ss, hdr, &get_limit_parser, &li)) 2713 continue; 2714 } 2715 2716 if (limit != NULL) 2717 *limit = li.limit; 2718 2719 return (e.error); 2720 } 2721 2722 struct pfctl_nl_begin_addrs { 2723 uint32_t ticket; 2724 }; 2725 #define _OUT(_field) offsetof(struct pfctl_nl_begin_addrs, _field) 2726 static struct snl_attr_parser ap_begin_addrs[] = { 2727 { .type = PF_BA_TICKET, .off = _OUT(ticket), .cb = snl_attr_get_uint32 }, 2728 }; 2729 #undef _OUT 2730 SNL_DECLARE_PARSER(begin_addrs_parser, struct genlmsghdr, snl_f_p_empty, ap_begin_addrs); 2731 2732 int 2733 pfctl_begin_addrs(struct pfctl_handle *h, uint32_t *ticket) 2734 { 2735 struct snl_writer nw; 2736 struct pfctl_nl_begin_addrs attrs = {}; 2737 struct snl_errmsg_data e = {}; 2738 struct nlmsghdr *hdr; 2739 uint32_t seq_id; 2740 int family_id; 2741 2742 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME); 2743 if (family_id == 0) 2744 return (ENOTSUP); 2745 2746 snl_init_writer(&h->ss, &nw); 2747 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_BEGIN_ADDRS); 2748 hdr->nlmsg_flags |= NLM_F_DUMP; 2749 2750 if ((hdr = snl_finalize_msg(&nw)) == NULL) 2751 return (ENXIO); 2752 2753 seq_id = hdr->nlmsg_seq; 2754 2755 if (! snl_send_message(&h->ss, hdr)) 2756 return (ENXIO); 2757 2758 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) { 2759 if (! snl_parse_nlmsg(&h->ss, hdr, &begin_addrs_parser, &attrs)) 2760 continue; 2761 } 2762 2763 if (ticket != NULL) 2764 *ticket = attrs.ticket; 2765 2766 return (e.error); 2767 } 2768 2769 int 2770 pfctl_add_addr(struct pfctl_handle *h, const struct pfioc_pooladdr *pa, int which) 2771 { 2772 struct snl_writer nw; 2773 struct snl_errmsg_data e = {}; 2774 struct nlmsghdr *hdr; 2775 uint32_t seq_id; 2776 int family_id; 2777 2778 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME); 2779 if (family_id == 0) 2780 return (ENOTSUP); 2781 2782 snl_init_writer(&h->ss, &nw); 2783 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_ADD_ADDR); 2784 2785 snl_add_msg_attr_u32(&nw, PF_AA_ACTION, pa->action); 2786 snl_add_msg_attr_u32(&nw, PF_AA_TICKET, pa->ticket); 2787 snl_add_msg_attr_u32(&nw, PF_AA_NR, pa->nr); 2788 snl_add_msg_attr_u32(&nw, PF_AA_R_NUM, pa->r_num); 2789 snl_add_msg_attr_u8(&nw, PF_AA_R_ACTION, pa->r_action); 2790 snl_add_msg_attr_u8(&nw, PF_AA_R_LAST, pa->r_last); 2791 snl_add_msg_attr_u8(&nw, PF_AA_AF, pa->af); 2792 snl_add_msg_attr_string(&nw, PF_AA_ANCHOR, pa->anchor); 2793 snl_add_msg_attr_pool_addr(&nw, PF_AA_ADDR, &pa->addr); 2794 snl_add_msg_attr_u32(&nw, PF_AA_WHICH, which); 2795 2796 if ((hdr = snl_finalize_msg(&nw)) == NULL) 2797 return (ENXIO); 2798 2799 seq_id = hdr->nlmsg_seq; 2800 2801 if (! snl_send_message(&h->ss, hdr)) 2802 return (ENXIO); 2803 2804 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) { 2805 } 2806 2807 return (e.error); 2808 } 2809 2810 static const struct snl_attr_parser ap_get_addrs[] = { 2811 { .type = PF_AA_NR, .off = 0, .cb = snl_attr_get_uint32 }, 2812 }; 2813 SNL_DECLARE_PARSER(get_addrs_parser, struct genlmsghdr, snl_f_p_empty, ap_get_addrs); 2814 2815 int 2816 pfctl_get_addrs(struct pfctl_handle *h, uint32_t ticket, uint32_t r_num, 2817 uint8_t r_action, const char *anchor, uint32_t *nr, int which) 2818 { 2819 struct snl_writer nw; 2820 struct snl_errmsg_data e = {}; 2821 struct nlmsghdr *hdr; 2822 uint32_t seq_id; 2823 int family_id; 2824 2825 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME); 2826 if (family_id == 0) 2827 return (ENOTSUP); 2828 2829 snl_init_writer(&h->ss, &nw); 2830 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GET_ADDRS); 2831 2832 snl_add_msg_attr_u32(&nw, PF_AA_TICKET, ticket); 2833 snl_add_msg_attr_u32(&nw, PF_AA_R_NUM, r_num); 2834 snl_add_msg_attr_u8(&nw, PF_AA_R_ACTION, r_action); 2835 snl_add_msg_attr_string(&nw, PF_AA_ANCHOR, anchor); 2836 snl_add_msg_attr_u32(&nw, PF_AA_WHICH, which); 2837 2838 if ((hdr = snl_finalize_msg(&nw)) == NULL) 2839 return (ENXIO); 2840 2841 seq_id = hdr->nlmsg_seq; 2842 2843 if (! snl_send_message(&h->ss, hdr)) 2844 return (ENXIO); 2845 2846 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) { 2847 if (! snl_parse_nlmsg(&h->ss, hdr, &get_addrs_parser, nr)) 2848 continue; 2849 } 2850 2851 return (e.error); 2852 } 2853 2854 #define _OUT(_field) offsetof(struct pf_pooladdr, _field) 2855 static const struct snl_attr_parser ap_pool_addr[] = { 2856 { .type = PF_PA_ADDR, .off = _OUT(addr), .arg = &addr_wrap_parser, .cb = snl_attr_get_nested }, 2857 { .type = PF_PA_IFNAME, .off = _OUT(ifname), .arg_u32 = IFNAMSIZ, .cb = snl_attr_copy_string }, 2858 }; 2859 SNL_DECLARE_ATTR_PARSER(pool_addr_parser, ap_pool_addr); 2860 #undef _OUT 2861 2862 #define _OUT(_field) offsetof(struct pfioc_pooladdr, _field) 2863 static const struct snl_attr_parser ap_get_addr[] = { 2864 { .type = PF_AA_ACTION, .off = _OUT(action), .cb = snl_attr_get_uint32 }, 2865 { .type = PF_AA_TICKET, .off = _OUT(ticket), .cb = snl_attr_get_uint32 }, 2866 { .type = PF_AA_NR, .off = _OUT(nr), .cb = snl_attr_get_uint32 }, 2867 { .type = PF_AA_R_NUM, .off = _OUT(r_num), .cb = snl_attr_get_uint32 }, 2868 { .type = PF_AA_R_ACTION, .off = _OUT(r_action), .cb = snl_attr_get_uint8 }, 2869 { .type = PF_AA_R_LAST, .off = _OUT(r_last), .cb = snl_attr_get_uint8 }, 2870 { .type = PF_AA_AF, .off = _OUT(af), .cb = snl_attr_get_uint8 }, 2871 { .type = PF_AA_ANCHOR, .off = _OUT(anchor), .arg_u32 = MAXPATHLEN, .cb = snl_attr_copy_string }, 2872 { .type = PF_AA_ADDR, .off = _OUT(addr), .arg = &pool_addr_parser, .cb = snl_attr_get_nested }, 2873 }; 2874 SNL_DECLARE_PARSER(get_addr_parser, struct genlmsghdr, snl_f_p_empty, ap_get_addr); 2875 #undef _OUT 2876 2877 int 2878 pfctl_get_addr(struct pfctl_handle *h, uint32_t ticket, uint32_t r_num, 2879 uint8_t r_action, const char *anchor, uint32_t nr, struct pfioc_pooladdr *pa, 2880 int which) 2881 { 2882 struct snl_writer nw; 2883 struct snl_errmsg_data e = {}; 2884 struct nlmsghdr *hdr; 2885 uint32_t seq_id; 2886 int family_id; 2887 2888 family_id =snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME); 2889 if (family_id == 0) 2890 return (ENOTSUP); 2891 2892 snl_init_writer(&h->ss, &nw); 2893 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GET_ADDR); 2894 2895 snl_add_msg_attr_u32(&nw, PF_AA_TICKET, ticket); 2896 snl_add_msg_attr_u32(&nw, PF_AA_R_NUM, r_num); 2897 snl_add_msg_attr_u8(&nw, PF_AA_R_ACTION, r_action); 2898 snl_add_msg_attr_string(&nw, PF_AA_ANCHOR, anchor); 2899 snl_add_msg_attr_u32(&nw, PF_AA_NR, nr); 2900 snl_add_msg_attr_u32(&nw, PF_AA_WHICH, which); 2901 2902 if ((hdr = snl_finalize_msg(&nw)) == NULL) 2903 return (ENXIO); 2904 2905 seq_id = hdr->nlmsg_seq; 2906 2907 if (! snl_send_message(&h->ss, hdr)) 2908 return (ENXIO); 2909 2910 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) { 2911 if (! snl_parse_nlmsg(&h->ss, hdr, &get_addr_parser, pa)) 2912 continue; 2913 } 2914 2915 return (e.error); 2916 } 2917 2918 #define _OUT(_field) offsetof(struct pfioc_ruleset, _field) 2919 static const struct snl_attr_parser ap_ruleset[] = { 2920 { .type = PF_RS_NR, .off = _OUT(nr), .cb = snl_attr_get_uint32 }, 2921 { .type = PF_RS_NAME, .off = _OUT(name), .arg = (void *)PF_ANCHOR_NAME_SIZE, .cb = snl_attr_copy_string }, 2922 }; 2923 SNL_DECLARE_PARSER(ruleset_parser, struct genlmsghdr, snl_f_p_empty, ap_ruleset); 2924 #undef _OUT 2925 2926 int 2927 pfctl_get_rulesets(struct pfctl_handle *h, const char *path, uint32_t *nr) 2928 { 2929 struct snl_writer nw; 2930 struct snl_errmsg_data e = {}; 2931 struct nlmsghdr *hdr; 2932 struct pfioc_ruleset rs = {}; 2933 uint32_t seq_id; 2934 int family_id; 2935 2936 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME); 2937 if (family_id == 0) 2938 return (ENOTSUP); 2939 2940 snl_init_writer(&h->ss, &nw); 2941 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GET_RULESETS); 2942 2943 snl_add_msg_attr_string(&nw, PF_RS_PATH, path); 2944 2945 if ((hdr = snl_finalize_msg(&nw)) == NULL) 2946 return (ENXIO); 2947 2948 seq_id = hdr->nlmsg_seq; 2949 2950 if (! snl_send_message(&h->ss, hdr)) 2951 return (ENXIO); 2952 2953 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) { 2954 if (! snl_parse_nlmsg(&h->ss, hdr, &ruleset_parser, &rs)) 2955 continue; 2956 } 2957 2958 *nr = rs.nr; 2959 2960 return (e.error); 2961 } 2962 2963 int 2964 pfctl_get_ruleset(struct pfctl_handle *h, const char *path, uint32_t nr, struct pfioc_ruleset *rs) 2965 { 2966 struct snl_writer nw; 2967 struct snl_errmsg_data e = {}; 2968 struct nlmsghdr *hdr; 2969 uint32_t seq_id; 2970 int family_id; 2971 2972 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME); 2973 if (family_id == 0) 2974 return (ENOTSUP); 2975 2976 snl_init_writer(&h->ss, &nw); 2977 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GET_RULESET); 2978 2979 snl_add_msg_attr_string(&nw, PF_RS_PATH, path); 2980 snl_add_msg_attr_u32(&nw, PF_RS_NR, nr); 2981 2982 if ((hdr = snl_finalize_msg(&nw)) == NULL) 2983 return (ENXIO); 2984 2985 seq_id = hdr->nlmsg_seq; 2986 2987 if (! snl_send_message(&h->ss, hdr)) 2988 return (ENXIO); 2989 2990 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) { 2991 if (! snl_parse_nlmsg(&h->ss, hdr, &ruleset_parser, rs)) 2992 continue; 2993 } 2994 2995 return (e.error); 2996 } 2997 2998 #define _OUT(_field) offsetof(struct pfctl_threshold, _field) 2999 static const struct snl_attr_parser ap_pfctl_threshold[] = { 3000 { .type = PF_TH_LIMIT, .off = _OUT(limit), .cb = snl_attr_get_uint32 }, 3001 { .type = PF_TH_SECONDS, .off = _OUT(seconds), .cb = snl_attr_get_uint32 }, 3002 { .type = PF_TH_COUNT, .off = _OUT(count), .cb = snl_attr_get_uint32 }, 3003 { .type = PF_TH_LAST, .off = _OUT(last), .cb = snl_attr_get_uint32 }, 3004 }; 3005 SNL_DECLARE_ATTR_PARSER(pfctl_threshold_parser, ap_pfctl_threshold); 3006 #undef _OUT 3007 3008 #define _OUT(_field) offsetof(struct pfctl_src_node, _field) 3009 static struct snl_attr_parser ap_srcnode[] = { 3010 { .type = PF_SN_ADDR, .off = _OUT(addr), .cb = snl_attr_get_in6_addr }, 3011 { .type = PF_SN_RADDR, .off = _OUT(raddr), .cb = snl_attr_get_in6_addr }, 3012 { .type = PF_SN_RULE_NR, .off = _OUT(rule), .cb = snl_attr_get_uint32 }, 3013 { .type = PF_SN_BYTES_IN, .off = _OUT(bytes[0]), .cb = snl_attr_get_uint64 }, 3014 { .type = PF_SN_BYTES_OUT, .off = _OUT(bytes[1]), .cb = snl_attr_get_uint64 }, 3015 { .type = PF_SN_PACKETS_IN, .off = _OUT(packets[0]), .cb = snl_attr_get_uint64 }, 3016 { .type = PF_SN_PACKETS_OUT, .off = _OUT(packets[1]), .cb = snl_attr_get_uint64 }, 3017 { .type = PF_SN_STATES, .off = _OUT(states), .cb = snl_attr_get_uint32 }, 3018 { .type = PF_SN_CONNECTIONS, .off = _OUT(conn), .cb = snl_attr_get_uint32 }, 3019 { .type = PF_SN_AF, .off = _OUT(af), .cb = snl_attr_get_uint8 }, 3020 { .type = PF_SN_RULE_TYPE, .off = _OUT(ruletype), .cb = snl_attr_get_uint8 }, 3021 { .type = PF_SN_CREATION, .off = _OUT(creation), .cb = snl_attr_get_uint64 }, 3022 { .type = PF_SN_EXPIRE, .off = _OUT(expire), .cb = snl_attr_get_uint64 }, 3023 { .type = PF_SN_CONNECTION_RATE, .off = _OUT(conn_rate), .arg = &pfctl_threshold_parser, .cb = snl_attr_get_nested }, 3024 { .type = PF_SN_NAF, .off = _OUT(naf), .cb = snl_attr_get_uint8 }, 3025 { .type = PF_SN_NODE_TYPE, .off = _OUT(type), .cb = snl_attr_get_uint8 }, 3026 }; 3027 #undef _OUT 3028 SNL_DECLARE_PARSER(srcnode_parser, struct genlmsghdr, snl_f_p_empty, ap_srcnode); 3029 3030 int 3031 pfctl_get_srcnodes(struct pfctl_handle *h, pfctl_get_srcnode_fn fn, void *arg) 3032 { 3033 struct snl_writer nw; 3034 struct pfctl_src_node sn; 3035 struct snl_errmsg_data e = {}; 3036 struct nlmsghdr *hdr; 3037 uint32_t seq_id; 3038 int family_id; 3039 int ret; 3040 3041 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME); 3042 if (family_id == 0) 3043 return (ENOTSUP); 3044 3045 snl_init_writer(&h->ss, &nw); 3046 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GET_SRCNODES); 3047 3048 if ((hdr = snl_finalize_msg(&nw)) == NULL) 3049 return (ENXIO); 3050 3051 seq_id = hdr->nlmsg_seq; 3052 3053 if (!snl_send_message(&h->ss, hdr)) 3054 return (ENXIO); 3055 3056 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) { 3057 if (!snl_parse_nlmsg(&h->ss, hdr, &srcnode_parser, &sn)) 3058 continue; 3059 3060 ret = fn(&sn, arg); 3061 if (ret != 0) 3062 return (ret); 3063 } 3064 3065 return (e.error); 3066 } 3067 3068 static struct snl_attr_parser ap_ndel[] = { 3069 { .type = PF_T_NBR_DELETED, .off = 0, .cb = snl_attr_get_uint32 }, 3070 }; 3071 SNL_DECLARE_PARSER(ndel_parser, struct genlmsghdr, snl_f_p_empty, ap_ndel); 3072 3073 int 3074 pfctl_clear_tables(struct pfctl_handle *h, struct pfr_table *filter, 3075 int *ndel, int flags) 3076 { 3077 struct snl_writer nw; 3078 struct snl_errmsg_data e = {}; 3079 struct nlmsghdr *hdr; 3080 uint32_t seq_id; 3081 int family_id; 3082 3083 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME); 3084 if (family_id == 0) 3085 return (ENOTSUP); 3086 3087 snl_init_writer(&h->ss, &nw); 3088 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_CLEAR_TABLES); 3089 3090 snl_add_msg_attr_string(&nw, PF_T_ANCHOR, filter->pfrt_anchor); 3091 snl_add_msg_attr_string(&nw, PF_T_NAME, filter->pfrt_name); 3092 snl_add_msg_attr_u32(&nw, PF_T_TABLE_FLAGS, filter->pfrt_flags); 3093 snl_add_msg_attr_u32(&nw, PF_T_FLAGS, flags); 3094 3095 if ((hdr = snl_finalize_msg(&nw)) == NULL) 3096 return (ENXIO); 3097 3098 seq_id = hdr->nlmsg_seq; 3099 3100 if (!snl_send_message(&h->ss, hdr)) 3101 return (ENXIO); 3102 3103 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) { 3104 if (!snl_parse_nlmsg(&h->ss, hdr, &ndel_parser, ndel)) 3105 continue; 3106 } 3107 3108 return (e.error); 3109 } 3110 3111 static struct snl_attr_parser ap_nadd[] = { 3112 { .type = PF_T_NBR_ADDED, .off = 0, .cb = snl_attr_get_uint32 }, 3113 }; 3114 SNL_DECLARE_PARSER(nadd_parser, struct genlmsghdr, snl_f_p_empty, ap_nadd); 3115 int 3116 pfctl_add_table(struct pfctl_handle *h, struct pfr_table *table, 3117 int *nadd, int flags) 3118 { 3119 struct snl_writer nw; 3120 struct snl_errmsg_data e = {}; 3121 struct nlmsghdr *hdr; 3122 uint32_t seq_id; 3123 int family_id; 3124 3125 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME); 3126 if (family_id == 0) 3127 return (ENOTSUP); 3128 3129 snl_init_writer(&h->ss, &nw); 3130 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_ADD_TABLE); 3131 3132 snl_add_msg_attr_string(&nw, PF_T_ANCHOR, table->pfrt_anchor); 3133 snl_add_msg_attr_string(&nw, PF_T_NAME, table->pfrt_name); 3134 snl_add_msg_attr_u32(&nw, PF_T_TABLE_FLAGS, table->pfrt_flags); 3135 snl_add_msg_attr_u32(&nw, PF_T_FLAGS, flags); 3136 3137 if ((hdr = snl_finalize_msg(&nw)) == NULL) 3138 return (ENXIO); 3139 3140 seq_id = hdr->nlmsg_seq; 3141 3142 if (!snl_send_message(&h->ss, hdr)) 3143 return (ENXIO); 3144 3145 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) { 3146 if (!snl_parse_nlmsg(&h->ss, hdr, &nadd_parser, nadd)) 3147 continue; 3148 } 3149 3150 return (e.error); 3151 } 3152 3153 int 3154 pfctl_del_table(struct pfctl_handle *h, struct pfr_table *table, 3155 int *ndel, int flags) 3156 { 3157 struct snl_writer nw; 3158 struct snl_errmsg_data e = {}; 3159 struct nlmsghdr *hdr; 3160 uint32_t seq_id; 3161 int family_id; 3162 3163 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME); 3164 if (family_id == 0) 3165 return (ENOTSUP); 3166 3167 snl_init_writer(&h->ss, &nw); 3168 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_DEL_TABLE); 3169 3170 snl_add_msg_attr_string(&nw, PF_T_ANCHOR, table->pfrt_anchor); 3171 snl_add_msg_attr_string(&nw, PF_T_NAME, table->pfrt_name); 3172 snl_add_msg_attr_u32(&nw, PF_T_TABLE_FLAGS, table->pfrt_flags); 3173 snl_add_msg_attr_u32(&nw, PF_T_FLAGS, flags); 3174 3175 if ((hdr = snl_finalize_msg(&nw)) == NULL) 3176 return (ENXIO); 3177 3178 seq_id = hdr->nlmsg_seq; 3179 3180 if (!snl_send_message(&h->ss, hdr)) 3181 return (ENXIO); 3182 3183 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) { 3184 if (!snl_parse_nlmsg(&h->ss, hdr, &ndel_parser, ndel)) 3185 continue; 3186 } 3187 3188 return (e.error); 3189 } 3190 3191 static bool 3192 snl_attr_get_uint64_into_int_array(struct snl_state *ss, struct nlattr *nla, 3193 const void *arg, void *target) 3194 { 3195 uint64_t *u64target; 3196 struct snl_uint64_array a = { 3197 .count = 0, 3198 .max = (size_t)arg, 3199 }; 3200 bool error; 3201 3202 u64target = malloc(a.max * sizeof(uint64_t)); 3203 a.array = u64target; 3204 3205 error = snl_parse_header(ss, NLA_DATA(nla), NLA_DATA_LEN(nla), &array_parser, &a); 3206 if (! error) 3207 return (error); 3208 3209 for (size_t i = 0; i < a.count; i++) 3210 ((int *)target)[i] = (int)u64target[i]; 3211 3212 free(u64target); 3213 3214 return (true); 3215 } 3216 3217 #define _OUT(_field) offsetof(struct pfr_table, _field) 3218 static const struct snl_attr_parser ap_table[] = { 3219 { .type = PF_T_ANCHOR, .off = _OUT(pfrt_anchor), .arg = (void *)MAXPATHLEN, .cb = snl_attr_copy_string }, 3220 { .type = PF_T_NAME, .off = _OUT(pfrt_name), .arg = (void *)PF_TABLE_NAME_SIZE, .cb =snl_attr_copy_string }, 3221 { .type = PF_T_TABLE_FLAGS, .off = _OUT(pfrt_flags), .cb = snl_attr_get_uint32 }, 3222 }; 3223 #undef _OUT 3224 SNL_DECLARE_ATTR_PARSER(table_parser, ap_table); 3225 #define _OUT(_field) offsetof(struct pfr_tstats, _field) 3226 static struct snl_attr_parser ap_tstats[] = { 3227 { .type = PF_TS_TABLE, .off = _OUT(pfrts_t), .arg = &table_parser, .cb = snl_attr_get_nested }, 3228 { .type = PF_TS_PACKETS, .off = _OUT(pfrts_packets), .arg = (void *)(PFR_DIR_MAX * PFR_OP_TABLE_MAX), .cb = snl_attr_get_uint64_array}, 3229 { .type = PF_TS_BYTES, .off = _OUT(pfrts_bytes), .arg = (void *)(PFR_DIR_MAX * PFR_OP_TABLE_MAX), .cb = snl_attr_get_uint64_array }, 3230 { .type = PF_TS_MATCH, .off = _OUT(pfrts_match), .cb = snl_attr_get_uint64 }, 3231 {. type = PF_TS_NOMATCH, .off = _OUT(pfrts_nomatch), .cb = snl_attr_get_uint64 }, 3232 { .type = PF_TS_TZERO, .off = _OUT(pfrts_tzero), .cb = snl_attr_get_uint64 }, 3233 { .type = PF_TS_REFCNT, .off = _OUT(pfrts_cnt), . arg = (void *)PFR_REFCNT_MAX, .cb = snl_attr_get_uint64_into_int_array }, 3234 }; 3235 #undef _OUT 3236 SNL_DECLARE_PARSER(tstats_parser, struct genlmsghdr, snl_f_p_empty, ap_tstats); 3237 3238 int 3239 pfctl_get_tstats(struct pfctl_handle *h, const struct pfr_table *filter, 3240 pfctl_get_tstats_fn fn, void *arg) 3241 { 3242 struct snl_writer nw; 3243 struct snl_errmsg_data e = {}; 3244 struct nlmsghdr *hdr; 3245 uint32_t seq_id; 3246 int family_id; 3247 int ret; 3248 3249 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME); 3250 if (family_id == 0) 3251 return (ENOTSUP); 3252 3253 snl_init_writer(&h->ss, &nw); 3254 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GET_TSTATS); 3255 3256 snl_add_msg_attr_string(&nw, PF_T_ANCHOR, filter->pfrt_anchor); 3257 snl_add_msg_attr_string(&nw, PF_T_NAME, filter->pfrt_name); 3258 snl_add_msg_attr_u32(&nw, PF_T_TABLE_FLAGS, filter->pfrt_flags); 3259 3260 if ((hdr = snl_finalize_msg(&nw)) == NULL) 3261 return (ENXIO); 3262 3263 seq_id = hdr->nlmsg_seq; 3264 3265 if (!snl_send_message(&h->ss, hdr)) 3266 return (ENXIO); 3267 3268 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) { 3269 struct pfr_tstats tstats = {}; 3270 3271 if (!snl_parse_nlmsg(&h->ss, hdr, &tstats_parser, &tstats)) 3272 continue; 3273 3274 ret = fn(&tstats, arg); 3275 if (ret != 0) 3276 break; 3277 } 3278 3279 return (e.error); 3280 } 3281 3282 static struct snl_attr_parser ap_tstats_clr[] = { 3283 { .type = PF_TS_NZERO, .off = 0, .cb = snl_attr_get_uint64 }, 3284 }; 3285 SNL_DECLARE_PARSER(tstats_clr_parser, struct genlmsghdr, snl_f_p_empty, ap_tstats_clr); 3286 3287 int 3288 pfctl_clear_tstats(struct pfctl_handle *h, const struct pfr_table *filter, 3289 int *nzero, int flags) 3290 { 3291 struct snl_writer nw; 3292 struct snl_errmsg_data e = {}; 3293 struct nlmsghdr *hdr; 3294 uint64_t zero; 3295 uint32_t seq_id; 3296 int family_id; 3297 3298 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME); 3299 if (family_id == 0) 3300 return (ENOTSUP); 3301 3302 snl_init_writer(&h->ss, &nw); 3303 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_CLR_TSTATS); 3304 3305 snl_add_msg_attr_string(&nw, PF_T_ANCHOR, filter->pfrt_anchor); 3306 snl_add_msg_attr_string(&nw, PF_T_NAME, filter->pfrt_name); 3307 snl_add_msg_attr_u32(&nw, PF_T_TABLE_FLAGS, filter->pfrt_flags); 3308 snl_add_msg_attr_u32(&nw, PF_T_FLAGS, flags); 3309 3310 if ((hdr = snl_finalize_msg(&nw)) == NULL) 3311 return (ENXIO); 3312 3313 seq_id = hdr->nlmsg_seq; 3314 3315 if (!snl_send_message(&h->ss, hdr)) 3316 return (ENXIO); 3317 3318 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) { 3319 if (!snl_parse_nlmsg(&h->ss, hdr, &tstats_clr_parser, &zero)) 3320 continue; 3321 if (nzero) 3322 *nzero = (uint32_t)zero; 3323 } 3324 3325 return (e.error); 3326 } 3327