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 { .type = PF_GS_NCOUNTERS, .off = _OUT(ncounters), .cb = snl_attr_get_counters }, 395 { .type = PF_GS_FRAGMENTS, .off = _OUT(fragments), .cb = snl_attr_get_uint64 }, 396 }; 397 SNL_DECLARE_PARSER(getstatus_parser, struct genlmsghdr, snl_f_p_empty, ap_getstatus); 398 #undef _OUT 399 400 struct pfctl_status * 401 pfctl_get_status_h(struct pfctl_handle *h) 402 { 403 struct pfctl_status *status; 404 struct snl_errmsg_data e = {}; 405 struct nlmsghdr *hdr; 406 struct snl_writer nw; 407 uint32_t seq_id; 408 int family_id; 409 410 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME); 411 if (family_id == 0) 412 return (NULL); 413 414 snl_init_writer(&h->ss, &nw); 415 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GET_STATUS); 416 hdr->nlmsg_flags |= NLM_F_DUMP; 417 418 hdr = snl_finalize_msg(&nw); 419 if (hdr == NULL) { 420 return (NULL); 421 } 422 423 seq_id = hdr->nlmsg_seq; 424 if (! snl_send_message(&h->ss, hdr)) 425 return (NULL); 426 427 status = calloc(1, sizeof(*status)); 428 if (status == NULL) 429 return (NULL); 430 TAILQ_INIT(&status->counters); 431 TAILQ_INIT(&status->lcounters); 432 TAILQ_INIT(&status->fcounters); 433 TAILQ_INIT(&status->scounters); 434 TAILQ_INIT(&status->ncounters); 435 436 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) { 437 if (! snl_parse_nlmsg(&h->ss, hdr, &getstatus_parser, status)) 438 continue; 439 } 440 441 return (status); 442 } 443 444 struct pfctl_status * 445 pfctl_get_status(int dev) 446 { 447 struct pfctl_status *status; 448 nvlist_t *nvl; 449 size_t len; 450 const void *chksum; 451 452 status = calloc(1, sizeof(*status)); 453 if (status == NULL) 454 return (NULL); 455 456 nvl = nvlist_create(0); 457 458 if (pfctl_do_ioctl(dev, DIOCGETSTATUSNV, 4096, &nvl)) { 459 nvlist_destroy(nvl); 460 free(status); 461 return (NULL); 462 } 463 464 status->running = nvlist_get_bool(nvl, "running"); 465 status->since = nvlist_get_number(nvl, "since"); 466 status->debug = nvlist_get_number(nvl, "debug"); 467 status->hostid = ntohl(nvlist_get_number(nvl, "hostid")); 468 status->states = nvlist_get_number(nvl, "states"); 469 status->src_nodes = nvlist_get_number(nvl, "src_nodes"); 470 status->syncookies_active = nvlist_get_bool(nvl, "syncookies_active"); 471 status->reass = nvlist_get_number(nvl, "reass"); 472 473 strlcpy(status->ifname, nvlist_get_string(nvl, "ifname"), 474 IFNAMSIZ); 475 chksum = nvlist_get_binary(nvl, "chksum", &len); 476 assert(len == PF_MD5_DIGEST_LENGTH); 477 memcpy(status->pf_chksum, chksum, len); 478 479 _pfctl_get_status_counters(nvlist_get_nvlist(nvl, "counters"), 480 &status->counters); 481 _pfctl_get_status_counters(nvlist_get_nvlist(nvl, "lcounters"), 482 &status->lcounters); 483 _pfctl_get_status_counters(nvlist_get_nvlist(nvl, "fcounters"), 484 &status->fcounters); 485 _pfctl_get_status_counters(nvlist_get_nvlist(nvl, "scounters"), 486 &status->scounters); 487 488 pf_nvuint_64_array(nvl, "pcounters", 2 * 2 * 2, 489 (uint64_t *)status->pcounters, NULL); 490 pf_nvuint_64_array(nvl, "bcounters", 2 * 2, 491 (uint64_t *)status->bcounters, NULL); 492 493 nvlist_destroy(nvl); 494 495 return (status); 496 } 497 int 498 pfctl_clear_status(struct pfctl_handle *h) 499 { 500 return (pfctl_do_netlink_cmd(h, PFNL_CMD_CLEAR_STATUS)); 501 } 502 503 static uint64_t 504 _pfctl_status_counter(struct pfctl_status_counters *counters, uint64_t id) 505 { 506 struct pfctl_status_counter *c; 507 508 TAILQ_FOREACH(c, counters, entry) { 509 if (c->id == id) 510 return (c->counter); 511 } 512 513 return (0); 514 } 515 516 uint64_t 517 pfctl_status_counter(struct pfctl_status *status, int id) 518 { 519 return (_pfctl_status_counter(&status->counters, id)); 520 } 521 522 uint64_t 523 pfctl_status_lcounter(struct pfctl_status *status, int id) 524 { 525 return (_pfctl_status_counter(&status->lcounters, id)); 526 } 527 528 uint64_t 529 pfctl_status_fcounter(struct pfctl_status *status, int id) 530 { 531 return (_pfctl_status_counter(&status->fcounters, id)); 532 } 533 534 uint64_t 535 pfctl_status_scounter(struct pfctl_status *status, int id) 536 { 537 return (_pfctl_status_counter(&status->scounters, id)); 538 } 539 540 void 541 pfctl_free_status(struct pfctl_status *status) 542 { 543 struct pfctl_status_counter *c, *tmp; 544 545 if (status == NULL) 546 return; 547 548 TAILQ_FOREACH_SAFE(c, &status->counters, entry, tmp) { 549 free(c->name); 550 free(c); 551 } 552 TAILQ_FOREACH_SAFE(c, &status->lcounters, entry, tmp) { 553 free(c->name); 554 free(c); 555 } 556 TAILQ_FOREACH_SAFE(c, &status->fcounters, entry, tmp) { 557 free(c->name); 558 free(c); 559 } 560 TAILQ_FOREACH_SAFE(c, &status->scounters, entry, tmp) { 561 free(c->name); 562 free(c); 563 } 564 565 free(status); 566 } 567 568 static void 569 pfctl_nv_add_addr(nvlist_t *nvparent, const char *name, 570 const struct pf_addr *addr) 571 { 572 nvlist_t *nvl = nvlist_create(0); 573 574 nvlist_add_binary(nvl, "addr", addr, sizeof(*addr)); 575 576 nvlist_add_nvlist(nvparent, name, nvl); 577 nvlist_destroy(nvl); 578 } 579 580 static void 581 pf_nvaddr_to_addr(const nvlist_t *nvl, struct pf_addr *addr) 582 { 583 size_t len; 584 const void *data; 585 586 data = nvlist_get_binary(nvl, "addr", &len); 587 assert(len == sizeof(struct pf_addr)); 588 memcpy(addr, data, len); 589 } 590 591 static void 592 pfctl_nv_add_addr_wrap(nvlist_t *nvparent, const char *name, 593 const struct pf_addr_wrap *addr) 594 { 595 nvlist_t *nvl = nvlist_create(0); 596 597 nvlist_add_number(nvl, "type", addr->type); 598 nvlist_add_number(nvl, "iflags", addr->iflags); 599 if (addr->type == PF_ADDR_DYNIFTL) 600 nvlist_add_string(nvl, "ifname", addr->v.ifname); 601 if (addr->type == PF_ADDR_TABLE) 602 nvlist_add_string(nvl, "tblname", addr->v.tblname); 603 pfctl_nv_add_addr(nvl, "addr", &addr->v.a.addr); 604 pfctl_nv_add_addr(nvl, "mask", &addr->v.a.mask); 605 606 nvlist_add_nvlist(nvparent, name, nvl); 607 nvlist_destroy(nvl); 608 } 609 610 static void 611 pf_nvaddr_wrap_to_addr_wrap(const nvlist_t *nvl, struct pf_addr_wrap *addr) 612 { 613 bzero(addr, sizeof(*addr)); 614 615 addr->type = nvlist_get_number(nvl, "type"); 616 addr->iflags = nvlist_get_number(nvl, "iflags"); 617 if (addr->type == PF_ADDR_DYNIFTL) { 618 strlcpy(addr->v.ifname, nvlist_get_string(nvl, "ifname"), 619 IFNAMSIZ); 620 addr->p.dyncnt = nvlist_get_number(nvl, "dyncnt"); 621 } 622 if (addr->type == PF_ADDR_TABLE) { 623 strlcpy(addr->v.tblname, nvlist_get_string(nvl, "tblname"), 624 PF_TABLE_NAME_SIZE); 625 addr->p.tblcnt = nvlist_get_number(nvl, "tblcnt"); 626 } 627 628 pf_nvaddr_to_addr(nvlist_get_nvlist(nvl, "addr"), &addr->v.a.addr); 629 pf_nvaddr_to_addr(nvlist_get_nvlist(nvl, "mask"), &addr->v.a.mask); 630 } 631 632 static void 633 pfctl_nv_add_rule_addr(nvlist_t *nvparent, const char *name, 634 const struct pf_rule_addr *addr) 635 { 636 uint64_t ports[2]; 637 nvlist_t *nvl = nvlist_create(0); 638 639 pfctl_nv_add_addr_wrap(nvl, "addr", &addr->addr); 640 ports[0] = addr->port[0]; 641 ports[1] = addr->port[1]; 642 nvlist_add_number_array(nvl, "port", ports, 2); 643 nvlist_add_number(nvl, "neg", addr->neg); 644 nvlist_add_number(nvl, "port_op", addr->port_op); 645 646 nvlist_add_nvlist(nvparent, name, nvl); 647 nvlist_destroy(nvl); 648 } 649 650 static void 651 pf_nvrule_addr_to_rule_addr(const nvlist_t *nvl, struct pf_rule_addr *addr) 652 { 653 pf_nvaddr_wrap_to_addr_wrap(nvlist_get_nvlist(nvl, "addr"), &addr->addr); 654 655 pf_nvuint_16_array(nvl, "port", 2, addr->port, NULL); 656 addr->neg = nvlist_get_number(nvl, "neg"); 657 addr->port_op = nvlist_get_number(nvl, "port_op"); 658 } 659 660 static void 661 pf_nvmape_to_mape(const nvlist_t *nvl, struct pf_mape_portset *mape) 662 { 663 mape->offset = nvlist_get_number(nvl, "offset"); 664 mape->psidlen = nvlist_get_number(nvl, "psidlen"); 665 mape->psid = nvlist_get_number(nvl, "psid"); 666 } 667 668 static void 669 pf_nvpool_to_pool(const nvlist_t *nvl, struct pfctl_pool *pool) 670 { 671 size_t len; 672 const void *data; 673 674 data = nvlist_get_binary(nvl, "key", &len); 675 assert(len == sizeof(pool->key)); 676 memcpy(&pool->key, data, len); 677 678 pf_nvaddr_to_addr(nvlist_get_nvlist(nvl, "counter"), &pool->counter); 679 680 pool->tblidx = nvlist_get_number(nvl, "tblidx"); 681 pf_nvuint_16_array(nvl, "proxy_port", 2, pool->proxy_port, NULL); 682 pool->opts = nvlist_get_number(nvl, "opts"); 683 684 if (nvlist_exists_nvlist(nvl, "mape")) 685 pf_nvmape_to_mape(nvlist_get_nvlist(nvl, "mape"), &pool->mape); 686 } 687 688 static void 689 pf_nvrule_uid_to_rule_uid(const nvlist_t *nvl, struct pf_rule_uid *uid) 690 { 691 pf_nvuint_32_array(nvl, "uid", 2, uid->uid, NULL); 692 uid->op = nvlist_get_number(nvl, "op"); 693 } 694 695 static void 696 pf_nvdivert_to_divert(const nvlist_t *nvl, struct pfctl_rule *rule) 697 { 698 pf_nvaddr_to_addr(nvlist_get_nvlist(nvl, "addr"), &rule->divert.addr); 699 rule->divert.port = nvlist_get_number(nvl, "port"); 700 } 701 702 static void 703 pf_nvrule_to_rule(const nvlist_t *nvl, struct pfctl_rule *rule) 704 { 705 const uint64_t *skip; 706 const char *const *labels; 707 size_t skipcount, labelcount; 708 709 rule->nr = nvlist_get_number(nvl, "nr"); 710 711 pf_nvrule_addr_to_rule_addr(nvlist_get_nvlist(nvl, "src"), &rule->src); 712 pf_nvrule_addr_to_rule_addr(nvlist_get_nvlist(nvl, "dst"), &rule->dst); 713 714 skip = nvlist_get_number_array(nvl, "skip", &skipcount); 715 assert(skip); 716 assert(skipcount == PF_SKIP_COUNT); 717 for (int i = 0; i < PF_SKIP_COUNT; i++) 718 rule->skip[i].nr = skip[i]; 719 720 labels = nvlist_get_string_array(nvl, "labels", &labelcount); 721 assert(labelcount <= PF_RULE_MAX_LABEL_COUNT); 722 for (size_t i = 0; i < labelcount; i++) 723 strlcpy(rule->label[i], labels[i], PF_RULE_LABEL_SIZE); 724 rule->ridentifier = nvlist_get_number(nvl, "ridentifier"); 725 strlcpy(rule->ifname, nvlist_get_string(nvl, "ifname"), IFNAMSIZ); 726 strlcpy(rule->qname, nvlist_get_string(nvl, "qname"), PF_QNAME_SIZE); 727 strlcpy(rule->pqname, nvlist_get_string(nvl, "pqname"), PF_QNAME_SIZE); 728 strlcpy(rule->tagname, nvlist_get_string(nvl, "tagname"), 729 PF_TAG_NAME_SIZE); 730 strlcpy(rule->match_tagname, nvlist_get_string(nvl, "match_tagname"), 731 PF_TAG_NAME_SIZE); 732 733 strlcpy(rule->overload_tblname, nvlist_get_string(nvl, "overload_tblname"), 734 PF_TABLE_NAME_SIZE); 735 736 pf_nvpool_to_pool(nvlist_get_nvlist(nvl, "rpool"), &rule->rdr); 737 738 rule->evaluations = nvlist_get_number(nvl, "evaluations"); 739 pf_nvuint_64_array(nvl, "packets", 2, rule->packets, NULL); 740 pf_nvuint_64_array(nvl, "bytes", 2, rule->bytes, NULL); 741 742 if (nvlist_exists_number(nvl, "timestamp")) { 743 rule->last_active_timestamp = nvlist_get_number(nvl, "timestamp"); 744 } 745 746 rule->os_fingerprint = nvlist_get_number(nvl, "os_fingerprint"); 747 748 rule->rtableid = nvlist_get_number(nvl, "rtableid"); 749 pf_nvuint_32_array(nvl, "timeout", PFTM_MAX, rule->timeout, NULL); 750 rule->max_states = nvlist_get_number(nvl, "max_states"); 751 rule->max_src_nodes = nvlist_get_number(nvl, "max_src_nodes"); 752 rule->max_src_states = nvlist_get_number(nvl, "max_src_states"); 753 rule->max_src_conn = nvlist_get_number(nvl, "max_src_conn"); 754 rule->max_src_conn_rate.limit = 755 nvlist_get_number(nvl, "max_src_conn_rate.limit"); 756 rule->max_src_conn_rate.seconds = 757 nvlist_get_number(nvl, "max_src_conn_rate.seconds"); 758 rule->qid = nvlist_get_number(nvl, "qid"); 759 rule->pqid = nvlist_get_number(nvl, "pqid"); 760 rule->dnpipe = nvlist_get_number(nvl, "dnpipe"); 761 rule->dnrpipe = nvlist_get_number(nvl, "dnrpipe"); 762 rule->free_flags = nvlist_get_number(nvl, "dnflags"); 763 rule->prob = nvlist_get_number(nvl, "prob"); 764 rule->cuid = nvlist_get_number(nvl, "cuid"); 765 rule->cpid = nvlist_get_number(nvl, "cpid"); 766 767 rule->return_icmp = nvlist_get_number(nvl, "return_icmp"); 768 rule->return_icmp6 = nvlist_get_number(nvl, "return_icmp6"); 769 rule->max_mss = nvlist_get_number(nvl, "max_mss"); 770 rule->scrub_flags = nvlist_get_number(nvl, "scrub_flags"); 771 772 pf_nvrule_uid_to_rule_uid(nvlist_get_nvlist(nvl, "uid"), &rule->uid); 773 pf_nvrule_uid_to_rule_uid(nvlist_get_nvlist(nvl, "gid"), 774 (struct pf_rule_uid *)&rule->gid); 775 776 rule->rule_flag = nvlist_get_number(nvl, "rule_flag"); 777 rule->action = nvlist_get_number(nvl, "action"); 778 rule->direction = nvlist_get_number(nvl, "direction"); 779 rule->log = nvlist_get_number(nvl, "log"); 780 rule->logif = nvlist_get_number(nvl, "logif"); 781 rule->quick = nvlist_get_number(nvl, "quick"); 782 rule->ifnot = nvlist_get_number(nvl, "ifnot"); 783 rule->match_tag_not = nvlist_get_number(nvl, "match_tag_not"); 784 rule->natpass = nvlist_get_number(nvl, "natpass"); 785 786 rule->keep_state = nvlist_get_number(nvl, "keep_state"); 787 rule->af = nvlist_get_number(nvl, "af"); 788 rule->proto = nvlist_get_number(nvl, "proto"); 789 rule->type = nvlist_get_number(nvl, "type"); 790 rule->code = nvlist_get_number(nvl, "code"); 791 rule->flags = nvlist_get_number(nvl, "flags"); 792 rule->flagset = nvlist_get_number(nvl, "flagset"); 793 rule->min_ttl = nvlist_get_number(nvl, "min_ttl"); 794 rule->allow_opts = nvlist_get_number(nvl, "allow_opts"); 795 rule->rt = nvlist_get_number(nvl, "rt"); 796 rule->return_ttl = nvlist_get_number(nvl, "return_ttl"); 797 rule->tos = nvlist_get_number(nvl, "tos"); 798 rule->set_tos = nvlist_get_number(nvl, "set_tos"); 799 rule->anchor_relative = nvlist_get_number(nvl, "anchor_relative"); 800 rule->anchor_wildcard = nvlist_get_number(nvl, "anchor_wildcard"); 801 802 rule->flush = nvlist_get_number(nvl, "flush"); 803 rule->prio = nvlist_get_number(nvl, "prio"); 804 pf_nvuint_8_array(nvl, "set_prio", 2, rule->set_prio, NULL); 805 806 pf_nvdivert_to_divert(nvlist_get_nvlist(nvl, "divert"), rule); 807 808 rule->states_cur = nvlist_get_number(nvl, "states_cur"); 809 rule->states_tot = nvlist_get_number(nvl, "states_tot"); 810 rule->src_nodes = nvlist_get_number(nvl, "src_nodes"); 811 } 812 813 static void 814 pfctl_nveth_addr_to_eth_addr(const nvlist_t *nvl, struct pfctl_eth_addr *addr) 815 { 816 static const u_int8_t EMPTY_MAC[ETHER_ADDR_LEN] = { 0 }; 817 size_t len; 818 const void *data; 819 820 data = nvlist_get_binary(nvl, "addr", &len); 821 assert(len == sizeof(addr->addr)); 822 memcpy(addr->addr, data, sizeof(addr->addr)); 823 824 data = nvlist_get_binary(nvl, "mask", &len); 825 assert(len == sizeof(addr->mask)); 826 memcpy(addr->mask, data, sizeof(addr->mask)); 827 828 addr->neg = nvlist_get_bool(nvl, "neg"); 829 830 /* To make checks for 'is this address set?' easier. */ 831 addr->isset = memcmp(addr->addr, EMPTY_MAC, ETHER_ADDR_LEN) != 0; 832 } 833 834 static nvlist_t * 835 pfctl_eth_addr_to_nveth_addr(const struct pfctl_eth_addr *addr) 836 { 837 nvlist_t *nvl; 838 839 nvl = nvlist_create(0); 840 if (nvl == NULL) 841 return (NULL); 842 843 nvlist_add_bool(nvl, "neg", addr->neg); 844 nvlist_add_binary(nvl, "addr", &addr->addr, ETHER_ADDR_LEN); 845 nvlist_add_binary(nvl, "mask", &addr->mask, ETHER_ADDR_LEN); 846 847 return (nvl); 848 } 849 850 static void 851 pfctl_nveth_rule_to_eth_rule(const nvlist_t *nvl, struct pfctl_eth_rule *rule) 852 { 853 const char *const *labels; 854 size_t labelcount, i; 855 856 rule->nr = nvlist_get_number(nvl, "nr"); 857 rule->quick = nvlist_get_bool(nvl, "quick"); 858 strlcpy(rule->ifname, nvlist_get_string(nvl, "ifname"), IFNAMSIZ); 859 rule->ifnot = nvlist_get_bool(nvl, "ifnot"); 860 rule->direction = nvlist_get_number(nvl, "direction"); 861 rule->proto = nvlist_get_number(nvl, "proto"); 862 strlcpy(rule->match_tagname, nvlist_get_string(nvl, "match_tagname"), 863 PF_TAG_NAME_SIZE); 864 rule->match_tag = nvlist_get_number(nvl, "match_tag"); 865 rule->match_tag_not = nvlist_get_bool(nvl, "match_tag_not"); 866 867 labels = nvlist_get_string_array(nvl, "labels", &labelcount); 868 assert(labelcount <= PF_RULE_MAX_LABEL_COUNT); 869 for (i = 0; i < labelcount; i++) 870 strlcpy(rule->label[i], labels[i], PF_RULE_LABEL_SIZE); 871 rule->ridentifier = nvlist_get_number(nvl, "ridentifier"); 872 873 pfctl_nveth_addr_to_eth_addr(nvlist_get_nvlist(nvl, "src"), 874 &rule->src); 875 pfctl_nveth_addr_to_eth_addr(nvlist_get_nvlist(nvl, "dst"), 876 &rule->dst); 877 878 pf_nvrule_addr_to_rule_addr(nvlist_get_nvlist(nvl, "ipsrc"), 879 &rule->ipsrc); 880 pf_nvrule_addr_to_rule_addr(nvlist_get_nvlist(nvl, "ipdst"), 881 &rule->ipdst); 882 883 rule->evaluations = nvlist_get_number(nvl, "evaluations"); 884 rule->packets[0] = nvlist_get_number(nvl, "packets-in"); 885 rule->packets[1] = nvlist_get_number(nvl, "packets-out"); 886 rule->bytes[0] = nvlist_get_number(nvl, "bytes-in"); 887 rule->bytes[1] = nvlist_get_number(nvl, "bytes-out"); 888 889 if (nvlist_exists_number(nvl, "timestamp")) { 890 rule->last_active_timestamp = nvlist_get_number(nvl, "timestamp"); 891 } 892 893 strlcpy(rule->qname, nvlist_get_string(nvl, "qname"), PF_QNAME_SIZE); 894 strlcpy(rule->tagname, nvlist_get_string(nvl, "tagname"), 895 PF_TAG_NAME_SIZE); 896 897 rule->dnpipe = nvlist_get_number(nvl, "dnpipe"); 898 rule->dnflags = nvlist_get_number(nvl, "dnflags"); 899 900 rule->anchor_relative = nvlist_get_number(nvl, "anchor_relative"); 901 rule->anchor_wildcard = nvlist_get_number(nvl, "anchor_wildcard"); 902 903 strlcpy(rule->bridge_to, nvlist_get_string(nvl, "bridge_to"), 904 IFNAMSIZ); 905 906 rule->action = nvlist_get_number(nvl, "action"); 907 } 908 909 int 910 pfctl_get_eth_rulesets_info(int dev, struct pfctl_eth_rulesets_info *ri, 911 const char *path) 912 { 913 nvlist_t *nvl; 914 int ret; 915 916 bzero(ri, sizeof(*ri)); 917 918 nvl = nvlist_create(0); 919 nvlist_add_string(nvl, "path", path); 920 921 if ((ret = pfctl_do_ioctl(dev, DIOCGETETHRULESETS, 256, &nvl)) != 0) 922 goto out; 923 924 ri->nr = nvlist_get_number(nvl, "nr"); 925 926 out: 927 nvlist_destroy(nvl); 928 return (ret); 929 } 930 931 int 932 pfctl_get_eth_ruleset(int dev, const char *path, int nr, 933 struct pfctl_eth_ruleset_info *ri) 934 { 935 nvlist_t *nvl; 936 int ret; 937 938 bzero(ri, sizeof(*ri)); 939 940 nvl = nvlist_create(0); 941 nvlist_add_string(nvl, "path", path); 942 nvlist_add_number(nvl, "nr", nr); 943 944 if ((ret = pfctl_do_ioctl(dev, DIOCGETETHRULESET, 1024, &nvl)) != 0) 945 goto out; 946 947 ri->nr = nvlist_get_number(nvl, "nr"); 948 strlcpy(ri->path, nvlist_get_string(nvl, "path"), MAXPATHLEN); 949 strlcpy(ri->name, nvlist_get_string(nvl, "name"), 950 PF_ANCHOR_NAME_SIZE); 951 952 out: 953 nvlist_destroy(nvl); 954 return (ret); 955 } 956 957 int 958 pfctl_get_eth_rules_info(int dev, struct pfctl_eth_rules_info *rules, 959 const char *path) 960 { 961 nvlist_t *nvl; 962 int ret; 963 964 bzero(rules, sizeof(*rules)); 965 966 nvl = nvlist_create(0); 967 nvlist_add_string(nvl, "anchor", path); 968 969 if ((ret = pfctl_do_ioctl(dev, DIOCGETETHRULES, 1024, &nvl)) != 0) 970 goto out; 971 972 rules->nr = nvlist_get_number(nvl, "nr"); 973 rules->ticket = nvlist_get_number(nvl, "ticket"); 974 975 out: 976 nvlist_destroy(nvl); 977 return (ret); 978 } 979 980 int 981 pfctl_get_eth_rule(int dev, uint32_t nr, uint32_t ticket, 982 const char *path, struct pfctl_eth_rule *rule, bool clear, 983 char *anchor_call) 984 { 985 nvlist_t *nvl; 986 int ret; 987 988 nvl = nvlist_create(0); 989 990 nvlist_add_string(nvl, "anchor", path); 991 nvlist_add_number(nvl, "ticket", ticket); 992 nvlist_add_number(nvl, "nr", nr); 993 nvlist_add_bool(nvl, "clear", clear); 994 995 if ((ret = pfctl_do_ioctl(dev, DIOCGETETHRULE, 4096, &nvl)) != 0) 996 goto out; 997 998 pfctl_nveth_rule_to_eth_rule(nvl, rule); 999 1000 if (anchor_call) 1001 strlcpy(anchor_call, nvlist_get_string(nvl, "anchor_call"), 1002 MAXPATHLEN); 1003 1004 out: 1005 nvlist_destroy(nvl); 1006 return (ret); 1007 } 1008 1009 int 1010 pfctl_add_eth_rule(int dev, const struct pfctl_eth_rule *r, const char *anchor, 1011 const char *anchor_call, uint32_t ticket) 1012 { 1013 struct pfioc_nv nv; 1014 nvlist_t *nvl, *addr; 1015 void *packed; 1016 int error = 0; 1017 size_t labelcount, size; 1018 1019 nvl = nvlist_create(0); 1020 1021 nvlist_add_number(nvl, "ticket", ticket); 1022 nvlist_add_string(nvl, "anchor", anchor); 1023 nvlist_add_string(nvl, "anchor_call", anchor_call); 1024 1025 nvlist_add_number(nvl, "nr", r->nr); 1026 nvlist_add_bool(nvl, "quick", r->quick); 1027 nvlist_add_string(nvl, "ifname", r->ifname); 1028 nvlist_add_bool(nvl, "ifnot", r->ifnot); 1029 nvlist_add_number(nvl, "direction", r->direction); 1030 nvlist_add_number(nvl, "proto", r->proto); 1031 nvlist_add_string(nvl, "match_tagname", r->match_tagname); 1032 nvlist_add_bool(nvl, "match_tag_not", r->match_tag_not); 1033 1034 addr = pfctl_eth_addr_to_nveth_addr(&r->src); 1035 if (addr == NULL) { 1036 nvlist_destroy(nvl); 1037 return (ENOMEM); 1038 } 1039 nvlist_add_nvlist(nvl, "src", addr); 1040 nvlist_destroy(addr); 1041 1042 addr = pfctl_eth_addr_to_nveth_addr(&r->dst); 1043 if (addr == NULL) { 1044 nvlist_destroy(nvl); 1045 return (ENOMEM); 1046 } 1047 nvlist_add_nvlist(nvl, "dst", addr); 1048 nvlist_destroy(addr); 1049 1050 pfctl_nv_add_rule_addr(nvl, "ipsrc", &r->ipsrc); 1051 pfctl_nv_add_rule_addr(nvl, "ipdst", &r->ipdst); 1052 1053 labelcount = 0; 1054 while (labelcount < PF_RULE_MAX_LABEL_COUNT && 1055 r->label[labelcount][0] != 0) { 1056 nvlist_append_string_array(nvl, "labels", 1057 r->label[labelcount]); 1058 labelcount++; 1059 } 1060 nvlist_add_number(nvl, "ridentifier", r->ridentifier); 1061 1062 nvlist_add_string(nvl, "qname", r->qname); 1063 nvlist_add_string(nvl, "tagname", r->tagname); 1064 nvlist_add_number(nvl, "dnpipe", r->dnpipe); 1065 nvlist_add_number(nvl, "dnflags", r->dnflags); 1066 1067 nvlist_add_string(nvl, "bridge_to", r->bridge_to); 1068 1069 nvlist_add_number(nvl, "action", r->action); 1070 1071 packed = nvlist_pack(nvl, &size); 1072 if (packed == NULL) { 1073 nvlist_destroy(nvl); 1074 return (ENOMEM); 1075 } 1076 1077 nv.len = size; 1078 nv.size = size; 1079 nv.data = packed; 1080 1081 if (ioctl(dev, DIOCADDETHRULE, &nv) != 0) 1082 error = errno; 1083 1084 free(packed); 1085 nvlist_destroy(nvl); 1086 1087 return (error); 1088 } 1089 1090 static void 1091 snl_add_msg_attr_addr_wrap(struct snl_writer *nw, uint32_t type, const struct pf_addr_wrap *addr) 1092 { 1093 int off; 1094 1095 off = snl_add_msg_attr_nested(nw, type); 1096 1097 snl_add_msg_attr_ip6(nw, PF_AT_ADDR, &addr->v.a.addr.v6); 1098 snl_add_msg_attr_ip6(nw, PF_AT_MASK, &addr->v.a.mask.v6); 1099 1100 if (addr->type == PF_ADDR_DYNIFTL) 1101 snl_add_msg_attr_string(nw, PF_AT_IFNAME, addr->v.ifname); 1102 if (addr->type == PF_ADDR_TABLE) 1103 snl_add_msg_attr_string(nw, PF_AT_TABLENAME, addr->v.tblname); 1104 snl_add_msg_attr_u8(nw, PF_AT_TYPE, addr->type); 1105 snl_add_msg_attr_u8(nw, PF_AT_IFLAGS, addr->iflags); 1106 1107 snl_end_attr_nested(nw, off); 1108 } 1109 1110 static void 1111 snl_add_msg_attr_pool_addr(struct snl_writer *nw, uint32_t type, const struct pf_pooladdr *pa) 1112 { 1113 int off; 1114 1115 off = snl_add_msg_attr_nested(nw, type); 1116 1117 snl_add_msg_attr_string(nw, PF_PA_IFNAME, pa->ifname); 1118 snl_add_msg_attr_addr_wrap(nw, PF_PA_ADDR, &pa->addr); 1119 1120 snl_end_attr_nested(nw, off); 1121 } 1122 1123 static void 1124 snl_add_msg_attr_rule_addr(struct snl_writer *nw, uint32_t type, const struct pf_rule_addr *addr) 1125 { 1126 int off; 1127 1128 off = snl_add_msg_attr_nested(nw, type); 1129 1130 snl_add_msg_attr_addr_wrap(nw, PF_RAT_ADDR, &addr->addr); 1131 snl_add_msg_attr_u16(nw, PF_RAT_SRC_PORT, addr->port[0]); 1132 snl_add_msg_attr_u16(nw, PF_RAT_DST_PORT, addr->port[1]); 1133 snl_add_msg_attr_u8(nw, PF_RAT_NEG, addr->neg); 1134 snl_add_msg_attr_u8(nw, PF_RAT_OP, addr->port_op); 1135 1136 snl_end_attr_nested(nw, off); 1137 } 1138 1139 static void 1140 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]) 1141 { 1142 int off, i = 0; 1143 1144 off = snl_add_msg_attr_nested(nw, type); 1145 1146 while (i < PF_RULE_MAX_LABEL_COUNT && 1147 labels[i][0] != 0) { 1148 snl_add_msg_attr_string(nw, PF_LT_LABEL, labels[i]); 1149 i++; 1150 } 1151 1152 snl_end_attr_nested(nw, off); 1153 } 1154 1155 static void 1156 snl_add_msg_attr_mape(struct snl_writer *nw, uint32_t type, const struct pf_mape_portset *me) 1157 { 1158 int off; 1159 1160 off = snl_add_msg_attr_nested(nw, type); 1161 1162 snl_add_msg_attr_u8(nw, PF_MET_OFFSET, me->offset); 1163 snl_add_msg_attr_u8(nw, PF_MET_PSID_LEN, me->psidlen); 1164 snl_add_msg_attr_u16(nw, PF_MET_PSID, me->psid); 1165 1166 snl_end_attr_nested(nw, off); 1167 } 1168 1169 static void 1170 snl_add_msg_attr_rpool(struct snl_writer *nw, uint32_t type, const struct pfctl_pool *pool) 1171 { 1172 int off; 1173 1174 off = snl_add_msg_attr_nested(nw, type); 1175 1176 snl_add_msg_attr(nw, PF_PT_KEY, sizeof(pool->key), &pool->key); 1177 snl_add_msg_attr_ip6(nw, PF_PT_COUNTER, &pool->counter.v6); 1178 snl_add_msg_attr_u32(nw, PF_PT_TBLIDX, pool->tblidx); 1179 snl_add_msg_attr_u16(nw, PF_PT_PROXY_SRC_PORT, pool->proxy_port[0]); 1180 snl_add_msg_attr_u16(nw, PF_PT_PROXY_DST_PORT, pool->proxy_port[1]); 1181 snl_add_msg_attr_u8(nw, PF_PT_OPTS, pool->opts); 1182 snl_add_msg_attr_mape(nw, PF_PT_MAPE, &pool->mape); 1183 1184 snl_end_attr_nested(nw, off); 1185 } 1186 1187 static void 1188 snl_add_msg_attr_timeouts(struct snl_writer *nw, uint32_t type, const uint32_t *timeouts) 1189 { 1190 int off; 1191 1192 off = snl_add_msg_attr_nested(nw, type); 1193 1194 for (int i = 0; i < PFTM_MAX; i++) 1195 snl_add_msg_attr_u32(nw, PF_TT_TIMEOUT, timeouts[i]); 1196 1197 snl_end_attr_nested(nw, off); 1198 } 1199 1200 static void 1201 snl_add_msg_attr_uid(struct snl_writer *nw, uint32_t type, const struct pf_rule_uid *uid) 1202 { 1203 int off; 1204 1205 off = snl_add_msg_attr_nested(nw, type); 1206 1207 snl_add_msg_attr_u32(nw, PF_RUT_UID_LOW, uid->uid[0]); 1208 snl_add_msg_attr_u32(nw, PF_RUT_UID_HIGH, uid->uid[1]); 1209 snl_add_msg_attr_u8(nw, PF_RUT_OP, uid->op); 1210 1211 snl_end_attr_nested(nw, off); 1212 } 1213 1214 static void 1215 snl_add_msg_attr_threshold(struct snl_writer *nw, uint32_t type, const struct pfctl_threshold *th) 1216 { 1217 int off; 1218 1219 off = snl_add_msg_attr_nested(nw, type); 1220 1221 snl_add_msg_attr_u32(nw, PF_TH_LIMIT, th->limit); 1222 snl_add_msg_attr_u32(nw, PF_TH_SECONDS, th->seconds); 1223 1224 snl_end_attr_nested(nw, off); 1225 } 1226 1227 static void 1228 snl_add_msg_attr_pf_rule(struct snl_writer *nw, uint32_t type, const struct pfctl_rule *r) 1229 { 1230 int off; 1231 1232 off = snl_add_msg_attr_nested(nw, type); 1233 1234 snl_add_msg_attr_rule_addr(nw, PF_RT_SRC, &r->src); 1235 snl_add_msg_attr_rule_addr(nw, PF_RT_DST, &r->dst); 1236 snl_add_msg_attr_rule_labels(nw, PF_RT_LABELS, r->label); 1237 snl_add_msg_attr_u32(nw, PF_RT_RIDENTIFIER, r->ridentifier); 1238 snl_add_msg_attr_string(nw, PF_RT_IFNAME, r->ifname); 1239 snl_add_msg_attr_string(nw, PF_RT_QNAME, r->qname); 1240 snl_add_msg_attr_string(nw, PF_RT_PQNAME, r->pqname); 1241 snl_add_msg_attr_string(nw, PF_RT_TAGNAME, r->tagname); 1242 snl_add_msg_attr_string(nw, PF_RT_MATCH_TAGNAME, r->match_tagname); 1243 snl_add_msg_attr_string(nw, PF_RT_OVERLOAD_TBLNAME, r->overload_tblname); 1244 snl_add_msg_attr_rpool(nw, PF_RT_RPOOL_RDR, &r->rdr); 1245 snl_add_msg_attr_rpool(nw, PF_RT_RPOOL_NAT, &r->nat); 1246 snl_add_msg_attr_rpool(nw, PF_RT_RPOOL_RT, &r->route); 1247 snl_add_msg_attr_threshold(nw, PF_RT_PKTRATE, &r->pktrate); 1248 snl_add_msg_attr_u32(nw, PF_RT_OS_FINGERPRINT, r->os_fingerprint); 1249 snl_add_msg_attr_u32(nw, PF_RT_RTABLEID, r->rtableid); 1250 snl_add_msg_attr_timeouts(nw, PF_RT_TIMEOUT, r->timeout); 1251 snl_add_msg_attr_u32(nw, PF_RT_MAX_STATES, r->max_states); 1252 snl_add_msg_attr_u32(nw, PF_RT_MAX_SRC_NODES, r->max_src_nodes); 1253 snl_add_msg_attr_u32(nw, PF_RT_MAX_SRC_STATES, r->max_src_states); 1254 snl_add_msg_attr_u32(nw, PF_RT_MAX_SRC_CONN, r->max_src_conn); 1255 snl_add_msg_attr_u32(nw, PF_RT_MAX_SRC_CONN_RATE_LIMIT, r->max_src_conn_rate.limit); 1256 snl_add_msg_attr_u32(nw, PF_RT_MAX_SRC_CONN_RATE_SECS, r->max_src_conn_rate.seconds); 1257 snl_add_msg_attr_u16(nw, PF_RT_MAX_PKT_SIZE, r->max_pkt_size); 1258 1259 snl_add_msg_attr_u16(nw, PF_RT_DNPIPE, r->dnpipe); 1260 snl_add_msg_attr_u16(nw, PF_RT_DNRPIPE, r->dnrpipe); 1261 snl_add_msg_attr_u32(nw, PF_RT_DNFLAGS, r->free_flags); 1262 1263 snl_add_msg_attr_u32(nw, PF_RT_NR, r->nr); 1264 snl_add_msg_attr_u32(nw, PF_RT_PROB, r->prob); 1265 snl_add_msg_attr_u32(nw, PF_RT_CUID, r->cuid); 1266 snl_add_msg_attr_u32(nw, PF_RT_CPID, r->cpid); 1267 1268 snl_add_msg_attr_u16(nw, PF_RT_RETURN_ICMP, r->return_icmp); 1269 snl_add_msg_attr_u16(nw, PF_RT_RETURN_ICMP6, r->return_icmp6); 1270 snl_add_msg_attr_u16(nw, PF_RT_MAX_MSS, r->max_mss); 1271 snl_add_msg_attr_u16(nw, PF_RT_SCRUB_FLAGS, r->scrub_flags); 1272 1273 snl_add_msg_attr_uid(nw, PF_RT_UID, &r->uid); 1274 snl_add_msg_attr_uid(nw, PF_RT_GID, (const struct pf_rule_uid *)&r->gid); 1275 snl_add_msg_attr_string(nw, PF_RT_RCV_IFNAME, r->rcv_ifname); 1276 snl_add_msg_attr_bool(nw, PF_RT_RCV_IFNOT, r->rcvifnot); 1277 1278 snl_add_msg_attr_u32(nw, PF_RT_RULE_FLAG, r->rule_flag); 1279 snl_add_msg_attr_u8(nw, PF_RT_ACTION, r->action); 1280 snl_add_msg_attr_u8(nw, PF_RT_DIRECTION, r->direction); 1281 snl_add_msg_attr_u8(nw, PF_RT_LOG, r->log); 1282 snl_add_msg_attr_u8(nw, PF_RT_LOGIF, r->logif); 1283 snl_add_msg_attr_u8(nw, PF_RT_QUICK, r->quick); 1284 snl_add_msg_attr_u8(nw, PF_RT_IF_NOT, r->ifnot); 1285 snl_add_msg_attr_u8(nw, PF_RT_MATCH_TAG_NOT, r->match_tag_not); 1286 snl_add_msg_attr_u8(nw, PF_RT_NATPASS, r->natpass); 1287 snl_add_msg_attr_u8(nw, PF_RT_KEEP_STATE, r->keep_state); 1288 snl_add_msg_attr_u8(nw, PF_RT_AF, r->af); 1289 snl_add_msg_attr_u8(nw, PF_RT_PROTO, r->proto); 1290 snl_add_msg_attr_u16(nw, PF_RT_TYPE_2, r->type); 1291 snl_add_msg_attr_u16(nw, PF_RT_CODE_2, r->code); 1292 snl_add_msg_attr_u8(nw, PF_RT_FLAGS, r->flags); 1293 snl_add_msg_attr_u8(nw, PF_RT_FLAGSET, r->flagset); 1294 snl_add_msg_attr_u8(nw, PF_RT_MIN_TTL, r->min_ttl); 1295 snl_add_msg_attr_u8(nw, PF_RT_ALLOW_OPTS, r->allow_opts); 1296 snl_add_msg_attr_u8(nw, PF_RT_RT, r->rt); 1297 snl_add_msg_attr_u8(nw, PF_RT_RETURN_TTL, r->return_ttl); 1298 snl_add_msg_attr_u8(nw, PF_RT_TOS, r->tos); 1299 snl_add_msg_attr_u8(nw, PF_RT_SET_TOS, r->set_tos); 1300 1301 snl_add_msg_attr_u8(nw, PF_RT_ANCHOR_RELATIVE, r->anchor_relative); 1302 snl_add_msg_attr_u8(nw, PF_RT_ANCHOR_WILDCARD, r->anchor_wildcard); 1303 snl_add_msg_attr_u8(nw, PF_RT_FLUSH, r->flush); 1304 snl_add_msg_attr_u8(nw, PF_RT_PRIO, r->prio); 1305 snl_add_msg_attr_u8(nw, PF_RT_SET_PRIO, r->set_prio[0]); 1306 snl_add_msg_attr_u8(nw, PF_RT_SET_PRIO_REPLY, r->set_prio[1]); 1307 snl_add_msg_attr_u8(nw, PF_RT_NAF, r->naf); 1308 1309 snl_add_msg_attr_ip6(nw, PF_RT_DIVERT_ADDRESS, &r->divert.addr.v6); 1310 snl_add_msg_attr_u16(nw, PF_RT_DIVERT_PORT, r->divert.port); 1311 1312 snl_end_attr_nested(nw, off); 1313 } 1314 1315 int 1316 pfctl_add_rule(int dev __unused, const struct pfctl_rule *r, const char *anchor, 1317 const char *anchor_call, uint32_t ticket, uint32_t pool_ticket) 1318 { 1319 struct pfctl_handle *h; 1320 int ret; 1321 1322 h = pfctl_open(PF_DEVICE); 1323 if (h == NULL) 1324 return (ENODEV); 1325 1326 ret = pfctl_add_rule_h(h, r, anchor, anchor_call, ticket, pool_ticket); 1327 1328 pfctl_close(h); 1329 1330 return (ret); 1331 } 1332 1333 int 1334 pfctl_add_rule_h(struct pfctl_handle *h, const struct pfctl_rule *r, 1335 const char *anchor, const char *anchor_call, uint32_t ticket, 1336 uint32_t pool_ticket) 1337 { 1338 struct snl_writer nw; 1339 struct snl_errmsg_data e = {}; 1340 struct nlmsghdr *hdr; 1341 uint32_t seq_id; 1342 int family_id; 1343 1344 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME); 1345 if (family_id == 0) 1346 return (ENOTSUP); 1347 1348 snl_init_writer(&h->ss, &nw); 1349 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_ADDRULE); 1350 hdr->nlmsg_flags |= NLM_F_DUMP; 1351 snl_add_msg_attr_u32(&nw, PF_ART_TICKET, ticket); 1352 snl_add_msg_attr_u32(&nw, PF_ART_POOL_TICKET, pool_ticket); 1353 snl_add_msg_attr_string(&nw, PF_ART_ANCHOR, anchor); 1354 snl_add_msg_attr_string(&nw, PF_ART_ANCHOR_CALL, anchor_call); 1355 1356 snl_add_msg_attr_pf_rule(&nw, PF_ART_RULE, r); 1357 1358 if ((hdr = snl_finalize_msg(&nw)) == NULL) 1359 return (ENXIO); 1360 1361 seq_id = hdr->nlmsg_seq; 1362 1363 if (! snl_send_message(&h->ss, hdr)) 1364 return (ENXIO); 1365 1366 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) { 1367 } 1368 1369 return (e.error); 1370 } 1371 1372 #define _IN(_field) offsetof(struct genlmsghdr, _field) 1373 #define _OUT(_field) offsetof(struct pfctl_rules_info, _field) 1374 static struct snl_attr_parser ap_getrules[] = { 1375 { .type = PF_GR_NR, .off = _OUT(nr), .cb = snl_attr_get_uint32 }, 1376 { .type = PF_GR_TICKET, .off = _OUT(ticket), .cb = snl_attr_get_uint32 }, 1377 }; 1378 #undef _IN 1379 #undef _OUT 1380 SNL_DECLARE_PARSER(getrules_parser, struct genlmsghdr, snl_f_p_empty, ap_getrules); 1381 1382 int 1383 pfctl_get_rules_info_h(struct pfctl_handle *h, struct pfctl_rules_info *rules, uint32_t ruleset, 1384 const char *path) 1385 { 1386 struct snl_errmsg_data e = {}; 1387 struct nlmsghdr *hdr; 1388 struct snl_writer nw; 1389 uint32_t seq_id; 1390 int family_id; 1391 1392 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME); 1393 if (family_id == 0) 1394 return (ENOTSUP); 1395 1396 snl_init_writer(&h->ss, &nw); 1397 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GETRULES); 1398 hdr->nlmsg_flags |= NLM_F_DUMP; 1399 1400 snl_add_msg_attr_string(&nw, PF_GR_ANCHOR, path); 1401 snl_add_msg_attr_u8(&nw, PF_GR_ACTION, ruleset); 1402 1403 hdr = snl_finalize_msg(&nw); 1404 if (hdr == NULL) 1405 return (ENOMEM); 1406 1407 seq_id = hdr->nlmsg_seq; 1408 if (! snl_send_message(&h->ss, hdr)) 1409 return (ENXIO); 1410 1411 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) { 1412 if (! snl_parse_nlmsg(&h->ss, hdr, &getrules_parser, rules)) 1413 continue; 1414 } 1415 1416 return (e.error); 1417 } 1418 1419 int 1420 pfctl_get_rules_info(int dev __unused, struct pfctl_rules_info *rules, uint32_t ruleset, 1421 const char *path) 1422 { 1423 struct pfctl_handle *h; 1424 int error; 1425 1426 h = pfctl_open(PF_DEVICE); 1427 if (h == NULL) 1428 return (ENOTSUP); 1429 error = pfctl_get_rules_info_h(h, rules, ruleset, path); 1430 pfctl_close(h); 1431 1432 return (error); 1433 } 1434 1435 int 1436 pfctl_get_rule_h(struct pfctl_handle *h, uint32_t nr, uint32_t ticket, const char *anchor, 1437 uint32_t ruleset, struct pfctl_rule *rule, char *anchor_call) 1438 { 1439 return (pfctl_get_clear_rule_h(h, nr, ticket, anchor, ruleset, rule, 1440 anchor_call, false)); 1441 } 1442 1443 int 1444 pfctl_get_rule(int dev, uint32_t nr, uint32_t ticket, const char *anchor, 1445 uint32_t ruleset, struct pfctl_rule *rule, char *anchor_call) 1446 { 1447 return (pfctl_get_clear_rule(dev, nr, ticket, anchor, ruleset, rule, 1448 anchor_call, false)); 1449 } 1450 1451 #define _OUT(_field) offsetof(struct pf_addr_wrap, _field) 1452 static const struct snl_attr_parser ap_addr_wrap[] = { 1453 { .type = PF_AT_ADDR, .off = _OUT(v.a.addr), .cb = snl_attr_get_in6_addr }, 1454 { .type = PF_AT_MASK, .off = _OUT(v.a.mask), .cb = snl_attr_get_in6_addr }, 1455 { .type = PF_AT_IFNAME, .off = _OUT(v.ifname), .arg = (void *)IFNAMSIZ,.cb = snl_attr_copy_string }, 1456 { .type = PF_AT_TABLENAME, .off = _OUT(v.tblname), .arg = (void *)PF_TABLE_NAME_SIZE, .cb = snl_attr_copy_string }, 1457 { .type = PF_AT_TYPE, .off = _OUT(type), .cb = snl_attr_get_uint8 }, 1458 { .type = PF_AT_IFLAGS, .off = _OUT(iflags), .cb = snl_attr_get_uint8 }, 1459 { .type = PF_AT_TBLCNT, .off = _OUT(p.tblcnt), .cb = snl_attr_get_uint32 }, 1460 { .type = PF_AT_DYNCNT, .off = _OUT(p.dyncnt), .cb = snl_attr_get_uint32 }, 1461 }; 1462 SNL_DECLARE_ATTR_PARSER(addr_wrap_parser, ap_addr_wrap); 1463 #undef _OUT 1464 1465 #define _OUT(_field) offsetof(struct pf_rule_addr, _field) 1466 static struct snl_attr_parser ap_rule_addr[] = { 1467 { .type = PF_RAT_ADDR, .off = _OUT(addr), .arg = &addr_wrap_parser, .cb = snl_attr_get_nested }, 1468 { .type = PF_RAT_SRC_PORT, .off = _OUT(port[0]), .cb = snl_attr_get_uint16 }, 1469 { .type = PF_RAT_DST_PORT, .off = _OUT(port[1]), .cb = snl_attr_get_uint16 }, 1470 { .type = PF_RAT_NEG, .off = _OUT(neg), .cb = snl_attr_get_uint8 }, 1471 { .type = PF_RAT_OP, .off = _OUT(port_op), .cb = snl_attr_get_uint8 }, 1472 }; 1473 #undef _OUT 1474 SNL_DECLARE_ATTR_PARSER(rule_addr_parser, ap_rule_addr); 1475 1476 struct snl_parsed_labels 1477 { 1478 char labels[PF_RULE_MAX_LABEL_COUNT][PF_RULE_LABEL_SIZE]; 1479 uint32_t i; 1480 }; 1481 1482 static bool 1483 snl_attr_get_pf_rule_labels(struct snl_state *ss, struct nlattr *nla, 1484 const void *arg __unused, void *target) 1485 { 1486 struct snl_parsed_labels *l = (struct snl_parsed_labels *)target; 1487 bool ret; 1488 1489 if (l->i >= PF_RULE_MAX_LABEL_COUNT) 1490 return (E2BIG); 1491 1492 ret = snl_attr_copy_string(ss, nla, (void *)PF_RULE_LABEL_SIZE, 1493 l->labels[l->i]); 1494 if (ret) 1495 l->i++; 1496 1497 return (ret); 1498 } 1499 1500 #define _OUT(_field) offsetof(struct nl_parsed_labels, _field) 1501 static const struct snl_attr_parser ap_labels[] = { 1502 { .type = PF_LT_LABEL, .off = 0, .cb = snl_attr_get_pf_rule_labels }, 1503 }; 1504 SNL_DECLARE_ATTR_PARSER(rule_labels_parser, ap_labels); 1505 #undef _OUT 1506 1507 static bool 1508 snl_attr_get_nested_pf_rule_labels(struct snl_state *ss, struct nlattr *nla, 1509 const void *arg __unused, void *target) 1510 { 1511 struct snl_parsed_labels parsed_labels = { }; 1512 bool error; 1513 1514 /* Assumes target points to the beginning of the structure */ 1515 error = snl_parse_header(ss, NLA_DATA(nla), NLA_DATA_LEN(nla), &rule_labels_parser, &parsed_labels); 1516 if (! error) 1517 return (error); 1518 1519 memcpy(target, parsed_labels.labels, sizeof(parsed_labels.labels)); 1520 1521 return (true); 1522 } 1523 1524 #define _OUT(_field) offsetof(struct pf_mape_portset, _field) 1525 static const struct snl_attr_parser ap_mape_portset[] = { 1526 { .type = PF_MET_OFFSET, .off = _OUT(offset), .cb = snl_attr_get_uint8 }, 1527 { .type = PF_MET_PSID_LEN, .off = _OUT(psidlen), .cb = snl_attr_get_uint8 }, 1528 {. type = PF_MET_PSID, .off = _OUT(psid), .cb = snl_attr_get_uint16 }, 1529 }; 1530 SNL_DECLARE_ATTR_PARSER(mape_portset_parser, ap_mape_portset); 1531 #undef _OUT 1532 1533 #define _OUT(_field) offsetof(struct pfctl_pool, _field) 1534 static const struct snl_attr_parser ap_pool[] = { 1535 { .type = PF_PT_KEY, .off = _OUT(key), .arg = (void *)sizeof(struct pf_poolhashkey), .cb = snl_attr_get_bytes }, 1536 { .type = PF_PT_COUNTER, .off = _OUT(counter), .cb = snl_attr_get_in6_addr }, 1537 { .type = PF_PT_TBLIDX, .off = _OUT(tblidx), .cb = snl_attr_get_uint32 }, 1538 { .type = PF_PT_PROXY_SRC_PORT, .off = _OUT(proxy_port[0]), .cb = snl_attr_get_uint16 }, 1539 { .type = PF_PT_PROXY_DST_PORT, .off = _OUT(proxy_port[1]), .cb = snl_attr_get_uint16 }, 1540 { .type = PF_PT_OPTS, .off = _OUT(opts), .cb = snl_attr_get_uint8 }, 1541 { .type = PF_PT_MAPE, .off = _OUT(mape), .arg = &mape_portset_parser, .cb = snl_attr_get_nested }, 1542 }; 1543 SNL_DECLARE_ATTR_PARSER(pool_parser, ap_pool); 1544 #undef _OUT 1545 1546 struct nl_parsed_timeouts 1547 { 1548 uint32_t timeouts[PFTM_MAX]; 1549 uint32_t i; 1550 }; 1551 1552 static bool 1553 snl_attr_get_pf_timeout(struct snl_state *ss, struct nlattr *nla, 1554 const void *arg __unused, void *target) 1555 { 1556 struct nl_parsed_timeouts *t = (struct nl_parsed_timeouts *)target; 1557 bool ret; 1558 1559 if (t->i >= PFTM_MAX) 1560 return (E2BIG); 1561 1562 ret = snl_attr_get_uint32(ss, nla, NULL, &t->timeouts[t->i]); 1563 if (ret) 1564 t->i++; 1565 1566 return (ret); 1567 } 1568 1569 #define _OUT(_field) offsetof(struct nl_parsed_timeout, _field) 1570 static const struct snl_attr_parser ap_timeouts[] = { 1571 { .type = PF_TT_TIMEOUT, .off = 0, .cb = snl_attr_get_pf_timeout }, 1572 }; 1573 SNL_DECLARE_ATTR_PARSER(timeout_parser, ap_timeouts); 1574 #undef _OUT 1575 1576 static bool 1577 snl_attr_get_nested_timeouts(struct snl_state *ss, struct nlattr *nla, 1578 const void *arg __unused, void *target) 1579 { 1580 struct nl_parsed_timeouts parsed_timeouts = { }; 1581 bool error; 1582 1583 /* Assumes target points to the beginning of the structure */ 1584 error = snl_parse_header(ss, NLA_DATA(nla), NLA_DATA_LEN(nla), &timeout_parser, &parsed_timeouts); 1585 if (! error) 1586 return (error); 1587 1588 memcpy(target, parsed_timeouts.timeouts, sizeof(parsed_timeouts.timeouts)); 1589 1590 return (true); 1591 } 1592 1593 #define _OUT(_field) offsetof(struct pf_rule_uid, _field) 1594 static const struct snl_attr_parser ap_rule_uid[] = { 1595 { .type = PF_RUT_UID_LOW, .off = _OUT(uid[0]), .cb = snl_attr_get_uint32 }, 1596 { .type = PF_RUT_UID_HIGH, .off = _OUT(uid[1]), .cb = snl_attr_get_uint32 }, 1597 { .type = PF_RUT_OP, .off = _OUT(op), .cb = snl_attr_get_uint8 }, 1598 }; 1599 SNL_DECLARE_ATTR_PARSER(rule_uid_parser, ap_rule_uid); 1600 #undef _OUT 1601 1602 #define _OUT(_field) offsetof(struct pfctl_threshold, _field) 1603 static const struct snl_attr_parser ap_pfctl_threshold[] = { 1604 { .type = PF_TH_LIMIT, .off = _OUT(limit), .cb = snl_attr_get_uint32 }, 1605 { .type = PF_TH_SECONDS, .off = _OUT(seconds), .cb = snl_attr_get_uint32 }, 1606 { .type = PF_TH_COUNT, .off = _OUT(count), .cb = snl_attr_get_uint32 }, 1607 }; 1608 SNL_DECLARE_ATTR_PARSER(pfctl_threshold_parser, ap_pfctl_threshold); 1609 #undef _OUT 1610 1611 struct pfctl_nl_get_rule { 1612 struct pfctl_rule r; 1613 char anchor_call[MAXPATHLEN]; 1614 }; 1615 #define _OUT(_field) offsetof(struct pfctl_nl_get_rule, _field) 1616 static struct snl_attr_parser ap_getrule[] = { 1617 { .type = PF_RT_SRC, .off = _OUT(r.src), .arg = &rule_addr_parser,.cb = snl_attr_get_nested }, 1618 { .type = PF_RT_DST, .off = _OUT(r.dst), .arg = &rule_addr_parser,.cb = snl_attr_get_nested }, 1619 { .type = PF_RT_RIDENTIFIER, .off = _OUT(r.ridentifier), .cb = snl_attr_get_uint32 }, 1620 { .type = PF_RT_LABELS, .off = _OUT(r.label), .arg = &rule_labels_parser,.cb = snl_attr_get_nested_pf_rule_labels }, 1621 { .type = PF_RT_IFNAME, .off = _OUT(r.ifname), .arg = (void *)IFNAMSIZ, .cb = snl_attr_copy_string }, 1622 { .type = PF_RT_QNAME, .off = _OUT(r.qname), .arg = (void *)PF_QNAME_SIZE, .cb = snl_attr_copy_string }, 1623 { .type = PF_RT_PQNAME, .off = _OUT(r.pqname), .arg = (void *)PF_QNAME_SIZE, .cb = snl_attr_copy_string }, 1624 { .type = PF_RT_TAGNAME, .off = _OUT(r.tagname), .arg = (void *)PF_TAG_NAME_SIZE, .cb = snl_attr_copy_string }, 1625 { .type = PF_RT_MATCH_TAGNAME, .off = _OUT(r.match_tagname), .arg = (void *)PF_TAG_NAME_SIZE, .cb = snl_attr_copy_string }, 1626 { .type = PF_RT_OVERLOAD_TBLNAME, .off = _OUT(r.overload_tblname), .arg = (void *)PF_TABLE_NAME_SIZE, .cb = snl_attr_copy_string }, 1627 { .type = PF_RT_RPOOL_RDR, .off = _OUT(r.rdr), .arg = &pool_parser, .cb = snl_attr_get_nested }, 1628 { .type = PF_RT_OS_FINGERPRINT, .off = _OUT(r.os_fingerprint), .cb = snl_attr_get_uint32 }, 1629 { .type = PF_RT_RTABLEID, .off = _OUT(r.rtableid), .cb = snl_attr_get_uint32 }, 1630 { .type = PF_RT_TIMEOUT, .off = _OUT(r.timeout), .arg = &timeout_parser, .cb = snl_attr_get_nested_timeouts }, 1631 { .type = PF_RT_MAX_STATES, .off = _OUT(r.max_states), .cb = snl_attr_get_uint32 }, 1632 { .type = PF_RT_MAX_SRC_NODES, .off = _OUT(r.max_src_nodes), .cb = snl_attr_get_uint32 }, 1633 { .type = PF_RT_MAX_SRC_STATES, .off = _OUT(r.max_src_states), .cb = snl_attr_get_uint32 }, 1634 { .type = PF_RT_MAX_SRC_CONN_RATE_LIMIT, .off = _OUT(r.max_src_conn_rate.limit), .cb = snl_attr_get_uint32 }, 1635 { .type = PF_RT_MAX_SRC_CONN_RATE_SECS, .off = _OUT(r.max_src_conn_rate.seconds), .cb = snl_attr_get_uint32 }, 1636 { .type = PF_RT_DNPIPE, .off = _OUT(r.dnpipe), .cb = snl_attr_get_uint16 }, 1637 { .type = PF_RT_DNRPIPE, .off = _OUT(r.dnrpipe), .cb = snl_attr_get_uint16 }, 1638 { .type = PF_RT_DNFLAGS, .off = _OUT(r.free_flags), .cb = snl_attr_get_uint32 }, 1639 { .type = PF_RT_NR, .off = _OUT(r.nr), .cb = snl_attr_get_uint32 }, 1640 { .type = PF_RT_PROB, .off = _OUT(r.prob), .cb = snl_attr_get_uint32 }, 1641 { .type = PF_RT_CUID, .off = _OUT(r.cuid), .cb = snl_attr_get_uint32 }, 1642 {. type = PF_RT_CPID, .off = _OUT(r.cpid), .cb = snl_attr_get_uint32 }, 1643 { .type = PF_RT_RETURN_ICMP, .off = _OUT(r.return_icmp), .cb = snl_attr_get_uint16 }, 1644 { .type = PF_RT_RETURN_ICMP6, .off = _OUT(r.return_icmp6), .cb = snl_attr_get_uint16 }, 1645 { .type = PF_RT_MAX_MSS, .off = _OUT(r.max_mss), .cb = snl_attr_get_uint16 }, 1646 { .type = PF_RT_SCRUB_FLAGS, .off = _OUT(r.scrub_flags), .cb = snl_attr_get_uint16 }, 1647 { .type = PF_RT_UID, .off = _OUT(r.uid), .arg = &rule_uid_parser, .cb = snl_attr_get_nested }, 1648 { .type = PF_RT_GID, .off = _OUT(r.gid), .arg = &rule_uid_parser, .cb = snl_attr_get_nested }, 1649 { .type = PF_RT_RULE_FLAG, .off = _OUT(r.rule_flag), .cb = snl_attr_get_uint32 }, 1650 { .type = PF_RT_ACTION, .off = _OUT(r.action), .cb = snl_attr_get_uint8 }, 1651 { .type = PF_RT_DIRECTION, .off = _OUT(r.direction), .cb = snl_attr_get_uint8 }, 1652 { .type = PF_RT_LOG, .off = _OUT(r.log), .cb = snl_attr_get_uint8 }, 1653 { .type = PF_RT_LOGIF, .off = _OUT(r.logif), .cb = snl_attr_get_uint8 }, 1654 { .type = PF_RT_QUICK, .off = _OUT(r.quick), .cb = snl_attr_get_uint8 }, 1655 { .type = PF_RT_IF_NOT, .off = _OUT(r.ifnot), .cb = snl_attr_get_uint8 }, 1656 { .type = PF_RT_MATCH_TAG_NOT, .off = _OUT(r.match_tag_not), .cb = snl_attr_get_uint8 }, 1657 { .type = PF_RT_NATPASS, .off = _OUT(r.natpass), .cb = snl_attr_get_uint8 }, 1658 { .type = PF_RT_KEEP_STATE, .off = _OUT(r.keep_state), .cb = snl_attr_get_uint8 }, 1659 { .type = PF_RT_AF, .off = _OUT(r.af), .cb = snl_attr_get_uint8 }, 1660 { .type = PF_RT_PROTO, .off = _OUT(r.proto), .cb = snl_attr_get_uint8 }, 1661 { .type = PF_RT_TYPE, .off = _OUT(r.type), .cb = snl_attr_get_uint8 }, 1662 { .type = PF_RT_CODE, .off = _OUT(r.code), .cb = snl_attr_get_uint8 }, 1663 { .type = PF_RT_FLAGS, .off = _OUT(r.flags), .cb = snl_attr_get_uint8 }, 1664 { .type = PF_RT_FLAGSET, .off = _OUT(r.flagset), .cb = snl_attr_get_uint8 }, 1665 { .type = PF_RT_MIN_TTL, .off = _OUT(r.min_ttl), .cb = snl_attr_get_uint8 }, 1666 { .type = PF_RT_ALLOW_OPTS, .off = _OUT(r.allow_opts), .cb = snl_attr_get_uint8 }, 1667 { .type = PF_RT_RT, .off = _OUT(r.rt), .cb = snl_attr_get_uint8 }, 1668 { .type = PF_RT_RETURN_TTL, .off = _OUT(r.return_ttl), .cb = snl_attr_get_uint8 }, 1669 { .type = PF_RT_TOS, .off = _OUT(r.tos), .cb = snl_attr_get_uint8 }, 1670 { .type = PF_RT_SET_TOS, .off = _OUT(r.set_tos), .cb = snl_attr_get_uint8 }, 1671 { .type = PF_RT_ANCHOR_RELATIVE, .off = _OUT(r.anchor_relative), .cb = snl_attr_get_uint8 }, 1672 { .type = PF_RT_ANCHOR_WILDCARD, .off = _OUT(r.anchor_wildcard), .cb = snl_attr_get_uint8 }, 1673 { .type = PF_RT_FLUSH, .off = _OUT(r.flush), .cb = snl_attr_get_uint8 }, 1674 { .type = PF_RT_PRIO, .off = _OUT(r.prio), .cb = snl_attr_get_uint8 }, 1675 { .type = PF_RT_SET_PRIO, .off = _OUT(r.set_prio[0]), .cb = snl_attr_get_uint8 }, 1676 { .type = PF_RT_SET_PRIO_REPLY, .off = _OUT(r.set_prio[1]), .cb = snl_attr_get_uint8 }, 1677 { .type = PF_RT_DIVERT_ADDRESS, .off = _OUT(r.divert.addr), .cb = snl_attr_get_in6_addr }, 1678 { .type = PF_RT_DIVERT_PORT, .off = _OUT(r.divert.port), .cb = snl_attr_get_uint16 }, 1679 { .type = PF_RT_PACKETS_IN, .off = _OUT(r.packets[0]), .cb = snl_attr_get_uint64 }, 1680 { .type = PF_RT_PACKETS_OUT, .off = _OUT(r.packets[1]), .cb = snl_attr_get_uint64 }, 1681 { .type = PF_RT_BYTES_IN, .off = _OUT(r.bytes[0]), .cb = snl_attr_get_uint64 }, 1682 { .type = PF_RT_BYTES_OUT, .off = _OUT(r.bytes[1]), .cb = snl_attr_get_uint64 }, 1683 { .type = PF_RT_EVALUATIONS, .off = _OUT(r.evaluations), .cb = snl_attr_get_uint64 }, 1684 { .type = PF_RT_TIMESTAMP, .off = _OUT(r.last_active_timestamp), .cb = snl_attr_get_uint64 }, 1685 { .type = PF_RT_STATES_CUR, .off = _OUT(r.states_cur), .cb = snl_attr_get_uint64 }, 1686 { .type = PF_RT_STATES_TOTAL, .off = _OUT(r.states_tot), .cb = snl_attr_get_uint64 }, 1687 { .type = PF_RT_SRC_NODES, .off = _OUT(r.src_nodes), .cb = snl_attr_get_uint64 }, 1688 { .type = PF_RT_ANCHOR_CALL, .off = _OUT(anchor_call), .arg = (void*)MAXPATHLEN, .cb = snl_attr_copy_string }, 1689 { .type = PF_RT_RCV_IFNAME, .off = _OUT(r.rcv_ifname), .arg = (void*)IFNAMSIZ, .cb = snl_attr_copy_string }, 1690 { .type = PF_RT_MAX_SRC_CONN, .off = _OUT(r.max_src_conn), .cb = snl_attr_get_uint32 }, 1691 { .type = PF_RT_RPOOL_NAT, .off = _OUT(r.nat), .arg = &pool_parser, .cb = snl_attr_get_nested }, 1692 { .type = PF_RT_NAF, .off = _OUT(r.naf), .cb = snl_attr_get_uint8 }, 1693 { .type = PF_RT_RPOOL_RT, .off = _OUT(r.route), .arg = &pool_parser, .cb = snl_attr_get_nested }, 1694 { .type = PF_RT_RCV_IFNOT, .off = _OUT(r.rcvifnot),.cb = snl_attr_get_bool }, 1695 { .type = PF_RT_SRC_NODES_LIMIT, .off = _OUT(r.src_nodes_type[PF_SN_LIMIT]), .cb = snl_attr_get_uint64 }, 1696 { .type = PF_RT_SRC_NODES_NAT, .off = _OUT(r.src_nodes_type[PF_SN_NAT]), .cb = snl_attr_get_uint64 }, 1697 { .type = PF_RT_SRC_NODES_ROUTE, .off = _OUT(r.src_nodes_type[PF_SN_ROUTE]), .cb = snl_attr_get_uint64 }, 1698 { .type = PF_RT_PKTRATE, .off = _OUT(r.pktrate), .arg = &pfctl_threshold_parser, .cb = snl_attr_get_nested }, 1699 { .type = PF_RT_MAX_PKT_SIZE, .off =_OUT(r.max_pkt_size), .cb = snl_attr_get_uint16 }, 1700 { .type = PF_RT_TYPE_2, .off = _OUT(r.type), .cb = snl_attr_get_uint16 }, 1701 { .type = PF_RT_CODE_2, .off = _OUT(r.code), .cb = snl_attr_get_uint16 }, 1702 { .type = PF_RT_EXPTIME, .off = _OUT(r.exptime), .cb = snl_attr_get_time_t }, 1703 }; 1704 #undef _OUT 1705 SNL_DECLARE_PARSER(getrule_parser, struct genlmsghdr, snl_f_p_empty, ap_getrule); 1706 1707 int 1708 pfctl_get_clear_rule_h(struct pfctl_handle *h, uint32_t nr, uint32_t ticket, 1709 const char *anchor, uint32_t ruleset, struct pfctl_rule *rule, 1710 char *anchor_call, bool clear) 1711 { 1712 struct pfctl_nl_get_rule attrs = {}; 1713 struct snl_errmsg_data e = {}; 1714 struct nlmsghdr *hdr; 1715 struct snl_writer nw; 1716 uint32_t seq_id; 1717 int family_id; 1718 1719 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME); 1720 if (family_id == 0) 1721 return (ENOTSUP); 1722 1723 snl_init_writer(&h->ss, &nw); 1724 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GETRULE); 1725 hdr->nlmsg_flags |= NLM_F_DUMP; 1726 1727 snl_add_msg_attr_string(&nw, PF_GR_ANCHOR, anchor); 1728 snl_add_msg_attr_u8(&nw, PF_GR_ACTION, ruleset); 1729 snl_add_msg_attr_u32(&nw, PF_GR_NR, nr); 1730 snl_add_msg_attr_u32(&nw, PF_GR_TICKET, ticket); 1731 snl_add_msg_attr_u8(&nw, PF_GR_CLEAR, clear); 1732 1733 hdr = snl_finalize_msg(&nw); 1734 if (hdr == NULL) 1735 return (ENOMEM); 1736 1737 seq_id = hdr->nlmsg_seq; 1738 if (! snl_send_message(&h->ss, hdr)) 1739 return (ENXIO); 1740 1741 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) { 1742 if (! snl_parse_nlmsg(&h->ss, hdr, &getrule_parser, &attrs)) 1743 continue; 1744 } 1745 1746 memcpy(rule, &attrs.r, sizeof(attrs.r)); 1747 strlcpy(anchor_call, attrs.anchor_call, MAXPATHLEN); 1748 1749 return (e.error); 1750 } 1751 1752 int 1753 pfctl_get_clear_rule(int dev, uint32_t nr, uint32_t ticket, 1754 const char *anchor, uint32_t ruleset, struct pfctl_rule *rule, 1755 char *anchor_call, bool clear) 1756 { 1757 nvlist_t *nvl; 1758 int ret; 1759 1760 nvl = nvlist_create(0); 1761 if (nvl == 0) 1762 return (ENOMEM); 1763 1764 nvlist_add_number(nvl, "nr", nr); 1765 nvlist_add_number(nvl, "ticket", ticket); 1766 nvlist_add_string(nvl, "anchor", anchor); 1767 nvlist_add_number(nvl, "ruleset", ruleset); 1768 1769 if (clear) 1770 nvlist_add_bool(nvl, "clear_counter", true); 1771 1772 if ((ret = pfctl_do_ioctl(dev, DIOCGETRULENV, 8192, &nvl)) != 0) 1773 goto out; 1774 1775 pf_nvrule_to_rule(nvlist_get_nvlist(nvl, "rule"), rule); 1776 1777 if (anchor_call) 1778 strlcpy(anchor_call, nvlist_get_string(nvl, "anchor_call"), 1779 MAXPATHLEN); 1780 1781 out: 1782 nvlist_destroy(nvl); 1783 return (ret); 1784 } 1785 1786 int 1787 pfctl_set_keepcounters(int dev, bool keep) 1788 { 1789 struct pfioc_nv nv; 1790 nvlist_t *nvl; 1791 int ret; 1792 1793 nvl = nvlist_create(0); 1794 1795 nvlist_add_bool(nvl, "keep_counters", keep); 1796 1797 nv.data = nvlist_pack(nvl, &nv.len); 1798 nv.size = nv.len; 1799 1800 nvlist_destroy(nvl); 1801 1802 ret = ioctl(dev, DIOCKEEPCOUNTERS, &nv); 1803 1804 free(nv.data); 1805 return (ret); 1806 } 1807 1808 struct pfctl_creator { 1809 uint32_t id; 1810 }; 1811 #define _IN(_field) offsetof(struct genlmsghdr, _field) 1812 #define _OUT(_field) offsetof(struct pfctl_creator, _field) 1813 static struct snl_attr_parser ap_creators[] = { 1814 { .type = PF_ST_CREATORID, .off = _OUT(id), .cb = snl_attr_get_uint32 }, 1815 }; 1816 #undef _IN 1817 #undef _OUT 1818 SNL_DECLARE_PARSER(creator_parser, struct genlmsghdr, snl_f_p_empty, ap_creators); 1819 1820 static int 1821 pfctl_get_creators_nl(struct snl_state *ss, uint32_t *creators, size_t *len) 1822 { 1823 1824 int family_id = snl_get_genl_family(ss, PFNL_FAMILY_NAME); 1825 size_t i = 0; 1826 1827 struct nlmsghdr *hdr; 1828 struct snl_writer nw; 1829 1830 if (family_id == 0) 1831 return (ENOTSUP); 1832 1833 snl_init_writer(ss, &nw); 1834 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GETCREATORS); 1835 hdr->nlmsg_flags |= NLM_F_DUMP; 1836 hdr = snl_finalize_msg(&nw); 1837 if (hdr == NULL) 1838 return (ENOMEM); 1839 uint32_t seq_id = hdr->nlmsg_seq; 1840 1841 snl_send_message(ss, hdr); 1842 1843 struct snl_errmsg_data e = {}; 1844 while ((hdr = snl_read_reply_multi(ss, seq_id, &e)) != NULL) { 1845 struct pfctl_creator c; 1846 bzero(&c, sizeof(c)); 1847 1848 if (!snl_parse_nlmsg(ss, hdr, &creator_parser, &c)) 1849 continue; 1850 1851 creators[i] = c.id; 1852 i++; 1853 if (i > *len) 1854 return (E2BIG); 1855 } 1856 1857 *len = i; 1858 1859 return (0); 1860 } 1861 1862 int 1863 pfctl_get_creatorids(struct pfctl_handle *h, uint32_t *creators, size_t *len) 1864 { 1865 int error; 1866 1867 error = pfctl_get_creators_nl(&h->ss, creators, len); 1868 1869 return (error); 1870 } 1871 1872 static inline bool 1873 snl_attr_get_pfaddr(struct snl_state *ss __unused, struct nlattr *nla, 1874 const void *arg __unused, void *target) 1875 { 1876 memcpy(target, NLA_DATA(nla), NLA_DATA_LEN(nla)); 1877 return (true); 1878 } 1879 1880 static inline bool 1881 snl_attr_store_ifname(struct snl_state *ss __unused, struct nlattr *nla, 1882 const void *arg __unused, void *target) 1883 { 1884 size_t maxlen = NLA_DATA_LEN(nla); 1885 1886 if (strnlen((char *)NLA_DATA(nla), maxlen) < maxlen) { 1887 strlcpy(target, (char *)NLA_DATA(nla), maxlen); 1888 return (true); 1889 } 1890 return (false); 1891 } 1892 1893 #define _OUT(_field) offsetof(struct pfctl_state_peer, _field) 1894 static const struct snl_attr_parser nla_p_speer[] = { 1895 { .type = PF_STP_SEQLO, .off = _OUT(seqlo), .cb = snl_attr_get_uint32 }, 1896 { .type = PF_STP_SEQHI, .off = _OUT(seqhi), .cb = snl_attr_get_uint32 }, 1897 { .type = PF_STP_SEQDIFF, .off = _OUT(seqdiff), .cb = snl_attr_get_uint32 }, 1898 { .type = PF_STP_STATE, .off = _OUT(state), .cb = snl_attr_get_uint8 }, 1899 { .type = PF_STP_WSCALE, .off = _OUT(wscale), .cb = snl_attr_get_uint8 }, 1900 }; 1901 SNL_DECLARE_ATTR_PARSER(speer_parser, nla_p_speer); 1902 #undef _OUT 1903 1904 #define _OUT(_field) offsetof(struct pfctl_state_key, _field) 1905 static const struct snl_attr_parser nla_p_skey[] = { 1906 { .type = PF_STK_ADDR0, .off = _OUT(addr[0]), .cb = snl_attr_get_pfaddr }, 1907 { .type = PF_STK_ADDR1, .off = _OUT(addr[1]), .cb = snl_attr_get_pfaddr }, 1908 { .type = PF_STK_PORT0, .off = _OUT(port[0]), .cb = snl_attr_get_uint16 }, 1909 { .type = PF_STK_PORT1, .off = _OUT(port[1]), .cb = snl_attr_get_uint16 }, 1910 { .type = PF_STK_AF, .off = _OUT(af), .cb = snl_attr_get_uint8 }, 1911 { .type = PF_STK_PROTO, .off = _OUT(proto), .cb = snl_attr_get_uint16 }, 1912 }; 1913 SNL_DECLARE_ATTR_PARSER(skey_parser, nla_p_skey); 1914 #undef _OUT 1915 1916 #define _IN(_field) offsetof(struct genlmsghdr, _field) 1917 #define _OUT(_field) offsetof(struct pfctl_state, _field) 1918 static struct snl_attr_parser ap_state[] = { 1919 { .type = PF_ST_ID, .off = _OUT(id), .cb = snl_attr_get_uint64 }, 1920 { .type = PF_ST_CREATORID, .off = _OUT(creatorid), .cb = snl_attr_get_uint32 }, 1921 { .type = PF_ST_IFNAME, .off = _OUT(ifname), .cb = snl_attr_store_ifname }, 1922 { .type = PF_ST_ORIG_IFNAME, .off = _OUT(orig_ifname), .cb = snl_attr_store_ifname }, 1923 { .type = PF_ST_KEY_WIRE, .off = _OUT(key[0]), .arg = &skey_parser, .cb = snl_attr_get_nested }, 1924 { .type = PF_ST_KEY_STACK, .off = _OUT(key[1]), .arg = &skey_parser, .cb = snl_attr_get_nested }, 1925 { .type = PF_ST_PEER_SRC, .off = _OUT(src), .arg = &speer_parser, .cb = snl_attr_get_nested }, 1926 { .type = PF_ST_PEER_DST, .off = _OUT(dst), .arg = &speer_parser, .cb = snl_attr_get_nested }, 1927 { .type = PF_ST_RT_ADDR, .off = _OUT(rt_addr), .cb = snl_attr_get_pfaddr }, 1928 { .type = PF_ST_RULE, .off = _OUT(rule), .cb = snl_attr_get_uint32 }, 1929 { .type = PF_ST_ANCHOR, .off = _OUT(anchor), .cb = snl_attr_get_uint32 }, 1930 { .type = PF_ST_NAT_RULE, .off = _OUT(nat_rule), .cb = snl_attr_get_uint32 }, 1931 { .type = PF_ST_CREATION, .off = _OUT(creation), .cb = snl_attr_get_uint32 }, 1932 { .type = PF_ST_EXPIRE, .off = _OUT(expire), .cb = snl_attr_get_uint32 }, 1933 { .type = PF_ST_PACKETS0, .off = _OUT(packets[0]), .cb = snl_attr_get_uint64 }, 1934 { .type = PF_ST_PACKETS1, .off = _OUT(packets[1]), .cb = snl_attr_get_uint64 }, 1935 { .type = PF_ST_BYTES0, .off = _OUT(bytes[0]), .cb = snl_attr_get_uint64 }, 1936 { .type = PF_ST_BYTES1, .off = _OUT(bytes[1]), .cb = snl_attr_get_uint64 }, 1937 { .type = PF_ST_DIRECTION, .off = _OUT(direction), .cb = snl_attr_get_uint8 }, 1938 { .type = PF_ST_LOG, .off = _OUT(log), .cb = snl_attr_get_uint8 }, 1939 { .type = PF_ST_STATE_FLAGS, .off = _OUT(state_flags), .cb = snl_attr_get_uint16 }, 1940 { .type = PF_ST_SYNC_FLAGS, .off = _OUT(sync_flags), .cb = snl_attr_get_uint8 }, 1941 { .type = PF_ST_RTABLEID, .off = _OUT(rtableid), .cb = snl_attr_get_int32 }, 1942 { .type = PF_ST_MIN_TTL, .off = _OUT(min_ttl), .cb = snl_attr_get_uint8 }, 1943 { .type = PF_ST_MAX_MSS, .off = _OUT(max_mss), .cb = snl_attr_get_uint16 }, 1944 { .type = PF_ST_DNPIPE, .off = _OUT(dnpipe), .cb = snl_attr_get_uint16 }, 1945 { .type = PF_ST_DNRPIPE, .off = _OUT(dnrpipe), .cb = snl_attr_get_uint16 }, 1946 { .type = PF_ST_RT, .off = _OUT(rt), .cb = snl_attr_get_uint8 }, 1947 { .type = PF_ST_RT_IFNAME, .off = _OUT(rt_ifname), .cb = snl_attr_store_ifname }, 1948 { .type = PF_ST_SRC_NODE_FLAGS, .off = _OUT(src_node_flags), .cb = snl_attr_get_uint8 }, 1949 { .type = PF_ST_RT_AF, .off = _OUT(rt_af), .cb = snl_attr_get_uint8 }, 1950 }; 1951 #undef _IN 1952 #undef _OUT 1953 SNL_DECLARE_PARSER(state_parser, struct genlmsghdr, snl_f_p_empty, ap_state); 1954 1955 static const struct snl_hdr_parser *all_parsers[] = { 1956 &state_parser, &skey_parser, &speer_parser, 1957 &creator_parser, &getrules_parser 1958 }; 1959 1960 static int 1961 pfctl_get_states_nl(struct pfctl_state_filter *filter, struct snl_state *ss, pfctl_get_state_fn f, void *arg) 1962 { 1963 SNL_VERIFY_PARSERS(all_parsers); 1964 int family_id = snl_get_genl_family(ss, PFNL_FAMILY_NAME); 1965 int ret; 1966 1967 struct nlmsghdr *hdr; 1968 struct snl_writer nw; 1969 1970 if (family_id == 0) 1971 return (ENOTSUP); 1972 1973 snl_init_writer(ss, &nw); 1974 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GETSTATES); 1975 hdr->nlmsg_flags |= NLM_F_DUMP; 1976 snl_add_msg_attr_string(&nw, PF_ST_IFNAME, filter->ifname); 1977 snl_add_msg_attr_u16(&nw, PF_ST_PROTO, filter->proto); 1978 snl_add_msg_attr_u8(&nw, PF_ST_AF, filter->af); 1979 snl_add_msg_attr_ip6(&nw, PF_ST_FILTER_ADDR, &filter->addr.v6); 1980 snl_add_msg_attr_ip6(&nw, PF_ST_FILTER_MASK, &filter->mask.v6); 1981 1982 hdr = snl_finalize_msg(&nw); 1983 if (hdr == NULL) 1984 return (ENOMEM); 1985 1986 uint32_t seq_id = hdr->nlmsg_seq; 1987 1988 snl_send_message(ss, hdr); 1989 1990 struct snl_errmsg_data e = {}; 1991 while ((hdr = snl_read_reply_multi(ss, seq_id, &e)) != NULL) { 1992 struct pfctl_state s; 1993 bzero(&s, sizeof(s)); 1994 if (!snl_parse_nlmsg(ss, hdr, &state_parser, &s)) 1995 continue; 1996 1997 ret = f(&s, arg); 1998 if (ret != 0) 1999 return (ret); 2000 } 2001 2002 return (0); 2003 } 2004 2005 int 2006 pfctl_get_states_iter(pfctl_get_state_fn f, void *arg) 2007 { 2008 struct pfctl_state_filter filter = {}; 2009 return (pfctl_get_filtered_states_iter(&filter, f, arg)); 2010 } 2011 2012 int 2013 pfctl_get_filtered_states_iter(struct pfctl_state_filter *filter, pfctl_get_state_fn f, void *arg) 2014 { 2015 struct snl_state ss = {}; 2016 int error; 2017 2018 snl_init(&ss, NETLINK_GENERIC); 2019 error = pfctl_get_states_nl(filter, &ss, f, arg); 2020 snl_free(&ss); 2021 2022 return (error); 2023 } 2024 2025 static int 2026 pfctl_append_states(struct pfctl_state *s, void *arg) 2027 { 2028 struct pfctl_state *new; 2029 struct pfctl_states *states = (struct pfctl_states *)arg; 2030 2031 new = malloc(sizeof(*s)); 2032 if (new == NULL) 2033 return (ENOMEM); 2034 2035 memcpy(new, s, sizeof(*s)); 2036 2037 TAILQ_INSERT_TAIL(&states->states, new, entry); 2038 2039 return (0); 2040 } 2041 2042 int 2043 pfctl_get_states(int dev __unused, struct pfctl_states *states) 2044 { 2045 int ret; 2046 2047 bzero(states, sizeof(*states)); 2048 TAILQ_INIT(&states->states); 2049 2050 ret = pfctl_get_states_iter(pfctl_append_states, states); 2051 if (ret != 0) { 2052 pfctl_free_states(states); 2053 return (ret); 2054 } 2055 2056 return (0); 2057 } 2058 2059 void 2060 pfctl_free_states(struct pfctl_states *states) 2061 { 2062 struct pfctl_state *s, *tmp; 2063 2064 TAILQ_FOREACH_SAFE(s, &states->states, entry, tmp) { 2065 free(s); 2066 } 2067 2068 bzero(states, sizeof(*states)); 2069 } 2070 2071 struct pfctl_nl_clear_states { 2072 uint32_t killed; 2073 }; 2074 #define _OUT(_field) offsetof(struct pfctl_nl_clear_states, _field) 2075 static struct snl_attr_parser ap_clear_states[] = { 2076 { .type = PF_CS_KILLED, .off = _OUT(killed), .cb = snl_attr_get_uint32 }, 2077 }; 2078 #undef _OUT 2079 SNL_DECLARE_PARSER(clear_states_parser, struct genlmsghdr, snl_f_p_empty, ap_clear_states); 2080 2081 static int 2082 _pfctl_clear_states_h(struct pfctl_handle *h, const struct pfctl_kill *kill, 2083 unsigned int *killed, int cmd) 2084 { 2085 struct snl_writer nw; 2086 struct snl_errmsg_data e = {}; 2087 struct pfctl_nl_clear_states attrs = {}; 2088 struct nlmsghdr *hdr; 2089 uint32_t seq_id; 2090 int family_id; 2091 2092 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME); 2093 if (family_id == 0) 2094 return (ENOTSUP); 2095 2096 snl_init_writer(&h->ss, &nw); 2097 hdr = snl_create_genl_msg_request(&nw, family_id, cmd); 2098 hdr->nlmsg_flags |= NLM_F_DUMP; 2099 2100 snl_add_msg_attr_u64(&nw, PF_CS_CMP_ID, kill->cmp.id); 2101 snl_add_msg_attr_u32(&nw, PF_CS_CMP_CREATORID, htonl(kill->cmp.creatorid)); 2102 snl_add_msg_attr_u8(&nw, PF_CS_CMP_DIR, kill->cmp.direction); 2103 snl_add_msg_attr_u8(&nw, PF_CS_AF, kill->af); 2104 snl_add_msg_attr_u8(&nw, PF_CS_PROTO, kill->proto); 2105 snl_add_msg_attr_rule_addr(&nw, PF_CS_SRC, &kill->src); 2106 snl_add_msg_attr_rule_addr(&nw, PF_CS_DST, &kill->dst); 2107 snl_add_msg_attr_rule_addr(&nw, PF_CS_RT_ADDR, &kill->rt_addr); 2108 snl_add_msg_attr_string(&nw, PF_CS_IFNAME, kill->ifname); 2109 snl_add_msg_attr_string(&nw, PF_CS_LABEL, kill->label); 2110 snl_add_msg_attr_bool(&nw, PF_CS_KILL_MATCH, kill->kill_match); 2111 snl_add_msg_attr_bool(&nw, PF_CS_NAT, kill->nat); 2112 2113 if ((hdr = snl_finalize_msg(&nw)) == NULL) 2114 return (ENXIO); 2115 2116 seq_id = hdr->nlmsg_seq; 2117 2118 if (! snl_send_message(&h->ss, hdr)) 2119 return (ENXIO); 2120 2121 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) { 2122 if (! snl_parse_nlmsg(&h->ss, hdr, &clear_states_parser, &attrs)) 2123 continue; 2124 } 2125 2126 if (killed) 2127 *killed = attrs.killed; 2128 2129 return (e.error); 2130 } 2131 2132 int 2133 pfctl_clear_states_h(struct pfctl_handle *h, const struct pfctl_kill *kill, 2134 unsigned int *killed) 2135 { 2136 return(_pfctl_clear_states_h(h, kill, killed, PFNL_CMD_CLRSTATES)); 2137 } 2138 2139 int 2140 pfctl_kill_states_h(struct pfctl_handle *h, const struct pfctl_kill *kill, 2141 unsigned int *killed) 2142 { 2143 return(_pfctl_clear_states_h(h, kill, killed, PFNL_CMD_KILLSTATES)); 2144 } 2145 2146 static int 2147 _pfctl_clear_states(int dev __unused, const struct pfctl_kill *kill, 2148 unsigned int *killed, uint64_t cmd) 2149 { 2150 struct pfctl_handle *h; 2151 int ret; 2152 2153 h = pfctl_open(PF_DEVICE); 2154 if (h == NULL) 2155 return (ENODEV); 2156 2157 ret = _pfctl_clear_states_h(h, kill, killed, cmd); 2158 pfctl_close(h); 2159 2160 return (ret); 2161 } 2162 2163 int 2164 pfctl_clear_states(int dev __unused, const struct pfctl_kill *kill, 2165 unsigned int *killed) 2166 { 2167 return (_pfctl_clear_states(dev, kill, killed, PFNL_CMD_CLRSTATES)); 2168 } 2169 2170 int 2171 pfctl_kill_states(int dev __unused, const struct pfctl_kill *kill, unsigned int *killed) 2172 { 2173 return (_pfctl_clear_states(dev, kill, killed, PFNL_CMD_KILLSTATES)); 2174 } 2175 2176 int 2177 pfctl_clear_rules(int dev, const char *anchorname) 2178 { 2179 struct pfioc_trans trans; 2180 struct pfioc_trans_e transe[2]; 2181 int ret; 2182 2183 bzero(&trans, sizeof(trans)); 2184 bzero(&transe, sizeof(transe)); 2185 2186 transe[0].rs_num = PF_RULESET_SCRUB; 2187 if (strlcpy(transe[0].anchor, anchorname, sizeof(transe[0].anchor)) 2188 >= sizeof(transe[0].anchor)) 2189 return (E2BIG); 2190 2191 transe[1].rs_num = PF_RULESET_FILTER; 2192 if (strlcpy(transe[1].anchor, anchorname, sizeof(transe[1].anchor)) 2193 >= sizeof(transe[1].anchor)) 2194 return (E2BIG); 2195 2196 trans.size = 2; 2197 trans.esize = sizeof(transe[0]); 2198 trans.array = transe; 2199 2200 ret = ioctl(dev, DIOCXBEGIN, &trans); 2201 if (ret != 0) 2202 return (errno); 2203 ret = ioctl(dev, DIOCXCOMMIT, &trans); 2204 if (ret != 0) 2205 return (errno); 2206 2207 return (0); 2208 } 2209 2210 int 2211 pfctl_clear_nat(int dev, const char *anchorname) 2212 { 2213 struct pfioc_trans trans; 2214 struct pfioc_trans_e transe[3]; 2215 int ret; 2216 2217 bzero(&trans, sizeof(trans)); 2218 bzero(&transe, sizeof(transe)); 2219 2220 transe[0].rs_num = PF_RULESET_NAT; 2221 if (strlcpy(transe[0].anchor, anchorname, sizeof(transe[0].anchor)) 2222 >= sizeof(transe[0].anchor)) 2223 return (E2BIG); 2224 2225 transe[1].rs_num = PF_RULESET_BINAT; 2226 if (strlcpy(transe[1].anchor, anchorname, sizeof(transe[1].anchor)) 2227 >= sizeof(transe[0].anchor)) 2228 return (E2BIG); 2229 2230 transe[2].rs_num = PF_RULESET_RDR; 2231 if (strlcpy(transe[2].anchor, anchorname, sizeof(transe[2].anchor)) 2232 >= sizeof(transe[2].anchor)) 2233 return (E2BIG); 2234 2235 trans.size = 3; 2236 trans.esize = sizeof(transe[0]); 2237 trans.array = transe; 2238 2239 ret = ioctl(dev, DIOCXBEGIN, &trans); 2240 if (ret != 0) 2241 return (errno); 2242 ret = ioctl(dev, DIOCXCOMMIT, &trans); 2243 if (ret != 0) 2244 return (errno); 2245 2246 return (0); 2247 } 2248 2249 int 2250 pfctl_clear_eth_rules(int dev, const char *anchorname) 2251 { 2252 struct pfioc_trans trans; 2253 struct pfioc_trans_e transe; 2254 int ret; 2255 2256 bzero(&trans, sizeof(trans)); 2257 bzero(&transe, sizeof(transe)); 2258 2259 transe.rs_num = PF_RULESET_ETH; 2260 if (strlcpy(transe.anchor, anchorname, sizeof(transe.anchor)) 2261 >= sizeof(transe.anchor)) 2262 return (E2BIG); 2263 2264 trans.size = 1; 2265 trans.esize = sizeof(transe); 2266 trans.array = &transe; 2267 2268 ret = ioctl(dev, DIOCXBEGIN, &trans); 2269 if (ret != 0) 2270 return (errno); 2271 ret = ioctl(dev, DIOCXCOMMIT, &trans); 2272 if (ret != 0) 2273 return (errno); 2274 2275 return (0); 2276 } 2277 2278 static int 2279 _pfctl_get_limit(int dev, const int index, uint *limit) 2280 { 2281 struct pfioc_limit pl; 2282 2283 bzero(&pl, sizeof(pl)); 2284 pl.index = index; 2285 2286 if (ioctl(dev, DIOCGETLIMIT, &pl) == -1) 2287 return (errno); 2288 2289 *limit = pl.limit; 2290 2291 return (0); 2292 } 2293 2294 int 2295 pfctl_set_syncookies(int dev, const struct pfctl_syncookies *s) 2296 { 2297 struct pfioc_nv nv; 2298 nvlist_t *nvl; 2299 int ret; 2300 uint state_limit; 2301 uint64_t lim, hi, lo; 2302 2303 ret = _pfctl_get_limit(dev, PF_LIMIT_STATES, &state_limit); 2304 if (ret != 0) 2305 return (ret); 2306 2307 if (state_limit == 0) 2308 state_limit = INT_MAX; 2309 2310 lim = state_limit; 2311 hi = lim * s->highwater / 100; 2312 lo = lim * s->lowwater / 100; 2313 2314 if (lo == hi) 2315 hi++; 2316 2317 nvl = nvlist_create(0); 2318 2319 nvlist_add_bool(nvl, "enabled", s->mode != PFCTL_SYNCOOKIES_NEVER); 2320 nvlist_add_bool(nvl, "adaptive", s->mode == PFCTL_SYNCOOKIES_ADAPTIVE); 2321 nvlist_add_number(nvl, "highwater", hi); 2322 nvlist_add_number(nvl, "lowwater", lo); 2323 2324 nv.data = nvlist_pack(nvl, &nv.len); 2325 nv.size = nv.len; 2326 nvlist_destroy(nvl); 2327 nvl = NULL; 2328 2329 ret = ioctl(dev, DIOCSETSYNCOOKIES, &nv); 2330 2331 free(nv.data); 2332 if (ret != 0) 2333 return (errno); 2334 2335 return (0); 2336 } 2337 2338 int 2339 pfctl_get_syncookies(int dev, struct pfctl_syncookies *s) 2340 { 2341 nvlist_t *nvl; 2342 int ret; 2343 uint state_limit; 2344 bool enabled, adaptive; 2345 2346 ret = _pfctl_get_limit(dev, PF_LIMIT_STATES, &state_limit); 2347 if (ret != 0) 2348 return (ret); 2349 2350 if (state_limit == 0) 2351 state_limit = INT_MAX; 2352 2353 bzero(s, sizeof(*s)); 2354 2355 nvl = nvlist_create(0); 2356 2357 if ((ret = pfctl_do_ioctl(dev, DIOCGETSYNCOOKIES, 256, &nvl)) != 0) { 2358 ret = errno; 2359 goto out; 2360 } 2361 2362 enabled = nvlist_get_bool(nvl, "enabled"); 2363 adaptive = nvlist_get_bool(nvl, "adaptive"); 2364 2365 if (enabled) { 2366 if (adaptive) 2367 s->mode = PFCTL_SYNCOOKIES_ADAPTIVE; 2368 else 2369 s->mode = PFCTL_SYNCOOKIES_ALWAYS; 2370 } else { 2371 s->mode = PFCTL_SYNCOOKIES_NEVER; 2372 } 2373 2374 s->highwater = nvlist_get_number(nvl, "highwater") * 100 / state_limit; 2375 s->lowwater = nvlist_get_number(nvl, "lowwater") * 100 / state_limit; 2376 s->halfopen_states = nvlist_get_number(nvl, "halfopen_states"); 2377 2378 out: 2379 nvlist_destroy(nvl); 2380 return (ret); 2381 } 2382 2383 int 2384 pfctl_table_add_addrs(int dev, struct pfr_table *tbl, struct pfr_addr 2385 *addr, int size, int *nadd, int flags) 2386 { 2387 struct pfioc_table io; 2388 2389 if (tbl == NULL || size < 0 || (size && addr == NULL)) { 2390 return (EINVAL); 2391 } 2392 bzero(&io, sizeof io); 2393 io.pfrio_flags = flags; 2394 io.pfrio_table = *tbl; 2395 io.pfrio_buffer = addr; 2396 io.pfrio_esize = sizeof(*addr); 2397 io.pfrio_size = size; 2398 2399 if (ioctl(dev, DIOCRADDADDRS, &io)) 2400 return (errno); 2401 if (nadd != NULL) 2402 *nadd = io.pfrio_nadd; 2403 return (0); 2404 } 2405 2406 static void 2407 snl_add_msg_attr_table(struct snl_writer *nw, uint32_t type, 2408 const struct pfr_table *tbl) 2409 { 2410 int off; 2411 2412 off = snl_add_msg_attr_nested(nw, type); 2413 2414 snl_add_msg_attr_string(nw, PF_T_ANCHOR, tbl->pfrt_anchor); 2415 snl_add_msg_attr_string(nw, PF_T_NAME, tbl->pfrt_name); 2416 snl_add_msg_attr_u32(nw, PF_T_TABLE_FLAGS, tbl->pfrt_flags); 2417 2418 snl_end_attr_nested(nw, off); 2419 } 2420 2421 static void 2422 snl_add_msg_attr_pfr_addr(struct snl_writer *nw, uint32_t type, 2423 const struct pfr_addr *addr) 2424 { 2425 int off; 2426 2427 off = snl_add_msg_attr_nested(nw, type); 2428 2429 snl_add_msg_attr_u8(nw, PFR_A_AF, addr->pfra_af); 2430 snl_add_msg_attr_u8(nw, PFR_A_NET, addr->pfra_net); 2431 snl_add_msg_attr_bool(nw, PFR_A_NOT, addr->pfra_not); 2432 snl_add_msg_attr_ip6(nw, PFR_A_ADDR, &addr->pfra_ip6addr); 2433 2434 snl_end_attr_nested(nw, off); 2435 } 2436 2437 static struct snl_attr_parser ap_table_add_addr[] = { 2438 { .type = PF_TA_NBR_ADDED, .off = 0, .cb = snl_attr_get_uint32 }, 2439 }; 2440 SNL_DECLARE_PARSER(table_add_addr_parser, struct genlmsghdr, snl_f_p_empty, ap_table_add_addr); 2441 2442 static int 2443 _pfctl_table_add_addrs_h(struct pfctl_handle *h, struct pfr_table *tbl, struct pfr_addr 2444 *addrs, int size, int *nadd, int flags) 2445 { 2446 struct snl_writer nw; 2447 struct snl_errmsg_data e = {}; 2448 struct nlmsghdr *hdr; 2449 uint32_t seq_id; 2450 uint32_t added; 2451 int family_id; 2452 2453 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME); 2454 if (family_id == 0) 2455 return (ENOTSUP); 2456 2457 snl_init_writer(&h->ss, &nw); 2458 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_TABLE_ADD_ADDR); 2459 2460 snl_add_msg_attr_table(&nw, PF_TA_TABLE, tbl); 2461 snl_add_msg_attr_u32(&nw, PF_TA_FLAGS, flags); 2462 for (int i = 0; i < size; i++) 2463 snl_add_msg_attr_pfr_addr(&nw, PF_TA_ADDR, &addrs[i]); 2464 2465 if ((hdr = snl_finalize_msg(&nw)) == NULL) 2466 return (ENXIO); 2467 seq_id = hdr->nlmsg_seq; 2468 2469 if (! snl_send_message(&h->ss, hdr)) 2470 return (ENXIO); 2471 2472 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) { 2473 if (! snl_parse_nlmsg(&h->ss, hdr, &table_add_addr_parser, &added)) 2474 continue; 2475 } 2476 2477 if (nadd) 2478 *nadd = added; 2479 2480 return (e.error); 2481 } 2482 2483 int 2484 pfctl_table_add_addrs_h(struct pfctl_handle *h, struct pfr_table *tbl, struct pfr_addr 2485 *addr, int size, int *nadd, int flags) 2486 { 2487 int ret; 2488 int off = 0; 2489 int partial_added; 2490 int chunk_size; 2491 2492 do { 2493 chunk_size = MIN(size - off, 256); 2494 ret = _pfctl_table_add_addrs_h(h, tbl, &addr[off], chunk_size, &partial_added, flags); 2495 if (ret != 0) 2496 break; 2497 if (nadd) 2498 *nadd += partial_added; 2499 off += chunk_size; 2500 } while (off < size); 2501 2502 return (ret); 2503 } 2504 2505 static struct snl_attr_parser ap_table_del_addr[] = { 2506 { .type = PF_TA_NBR_DELETED, .off = 0, .cb = snl_attr_get_uint32 }, 2507 }; 2508 SNL_DECLARE_PARSER(table_del_addr_parser, struct genlmsghdr, snl_f_p_empty, ap_table_del_addr); 2509 static int 2510 _pfctl_table_del_addrs_h(struct pfctl_handle *h, struct pfr_table *tbl, struct pfr_addr 2511 *addrs, int size, int *ndel, int flags) 2512 { 2513 struct snl_writer nw; 2514 struct snl_errmsg_data e = {}; 2515 struct nlmsghdr *hdr; 2516 uint32_t seq_id; 2517 uint32_t deleted; 2518 int family_id; 2519 2520 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME); 2521 if (family_id == 0) 2522 return (ENOTSUP); 2523 2524 snl_init_writer(&h->ss, &nw); 2525 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_TABLE_DEL_ADDR); 2526 2527 snl_add_msg_attr_table(&nw, PF_TA_TABLE, tbl); 2528 snl_add_msg_attr_u32(&nw, PF_TA_FLAGS, flags); 2529 for (int i = 0; i < size; i++) 2530 snl_add_msg_attr_pfr_addr(&nw, PF_TA_ADDR, &addrs[i]); 2531 2532 if ((hdr = snl_finalize_msg(&nw)) == NULL) 2533 return (ENXIO); 2534 seq_id = hdr->nlmsg_seq; 2535 2536 if (! snl_send_message(&h->ss, hdr)) 2537 return (ENXIO); 2538 2539 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) { 2540 if (! snl_parse_nlmsg(&h->ss, hdr, &table_del_addr_parser, &deleted)) 2541 continue; 2542 } 2543 2544 if (ndel) 2545 *ndel = deleted; 2546 2547 return (e.error); 2548 } 2549 2550 int 2551 pfctl_table_del_addrs(int dev, struct pfr_table *tbl, struct pfr_addr 2552 *addr, int size, int *ndel, int flags) 2553 { 2554 struct pfioc_table io; 2555 2556 if (tbl == NULL || size < 0 || (size && addr == NULL)) { 2557 return (EINVAL); 2558 } 2559 bzero(&io, sizeof io); 2560 io.pfrio_flags = flags; 2561 io.pfrio_table = *tbl; 2562 io.pfrio_buffer = addr; 2563 io.pfrio_esize = sizeof(*addr); 2564 io.pfrio_size = size; 2565 2566 if (ioctl(dev, DIOCRDELADDRS, &io)) 2567 return (errno); 2568 if (ndel != NULL) 2569 *ndel = io.pfrio_ndel; 2570 return (0); 2571 } 2572 2573 int 2574 pfctl_table_del_addrs_h(struct pfctl_handle *h, struct pfr_table *tbl, struct pfr_addr 2575 *addr, int size, int *ndel, int flags) 2576 { 2577 int ret; 2578 int off = 0; 2579 int partial_deleted; 2580 int chunk_size; 2581 2582 do { 2583 chunk_size = MIN(size - off, 256); 2584 ret = _pfctl_table_del_addrs_h(h, tbl, &addr[off], chunk_size, 2585 &partial_deleted, flags); 2586 if (ret != 0) 2587 break; 2588 if (ndel) 2589 *ndel += partial_deleted; 2590 off += chunk_size; 2591 } while (off < size); 2592 2593 return (ret); 2594 } 2595 2596 int 2597 pfctl_table_set_addrs(int dev, struct pfr_table *tbl, struct pfr_addr 2598 *addr, int size, int *size2, int *nadd, int *ndel, int *nchange, int flags) 2599 { 2600 struct pfioc_table io; 2601 2602 if (tbl == NULL || size < 0 || (size && addr == NULL)) { 2603 return (EINVAL); 2604 } 2605 bzero(&io, sizeof io); 2606 io.pfrio_flags = flags; 2607 io.pfrio_table = *tbl; 2608 io.pfrio_buffer = addr; 2609 io.pfrio_esize = sizeof(*addr); 2610 io.pfrio_size = size; 2611 io.pfrio_size2 = (size2 != NULL) ? *size2 : 0; 2612 if (ioctl(dev, DIOCRSETADDRS, &io)) 2613 return (errno); 2614 if (nadd != NULL) 2615 *nadd = io.pfrio_nadd; 2616 if (ndel != NULL) 2617 *ndel = io.pfrio_ndel; 2618 if (nchange != NULL) 2619 *nchange = io.pfrio_nchange; 2620 if (size2 != NULL) 2621 *size2 = io.pfrio_size2; 2622 return (0); 2623 } 2624 2625 int pfctl_table_get_addrs(int dev, struct pfr_table *tbl, struct pfr_addr *addr, 2626 int *size, int flags) 2627 { 2628 struct pfioc_table io; 2629 2630 if (tbl == NULL || size == NULL || *size < 0 || 2631 (*size && addr == NULL)) { 2632 return (EINVAL); 2633 } 2634 bzero(&io, sizeof io); 2635 io.pfrio_flags = flags; 2636 io.pfrio_table = *tbl; 2637 io.pfrio_buffer = addr; 2638 io.pfrio_esize = sizeof(*addr); 2639 io.pfrio_size = *size; 2640 if (ioctl(dev, DIOCRGETADDRS, &io)) 2641 return (errno); 2642 *size = io.pfrio_size; 2643 return (0); 2644 } 2645 2646 int 2647 pfctl_set_statusif(struct pfctl_handle *h, const char *ifname) 2648 { 2649 struct snl_writer nw; 2650 struct snl_errmsg_data e = {}; 2651 struct nlmsghdr *hdr; 2652 uint32_t seq_id; 2653 int family_id; 2654 2655 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME); 2656 if (family_id == 0) 2657 return (ENOTSUP); 2658 2659 snl_init_writer(&h->ss, &nw); 2660 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_SET_STATUSIF); 2661 2662 snl_add_msg_attr_string(&nw, PF_SS_IFNAME, ifname); 2663 2664 if ((hdr = snl_finalize_msg(&nw)) == NULL) 2665 return (ENXIO); 2666 2667 seq_id = hdr->nlmsg_seq; 2668 2669 if (! snl_send_message(&h->ss, hdr)) 2670 return (ENXIO); 2671 2672 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) { 2673 } 2674 2675 return (e.error); 2676 } 2677 2678 #define _IN(_field) offsetof(struct genlmsghdr, _field) 2679 #define _OUT(_field) offsetof(struct pfctl_natlook, _field) 2680 static struct snl_attr_parser ap_natlook[] = { 2681 { .type = PF_NL_SRC_ADDR, .off = _OUT(saddr), .cb = snl_attr_get_in6_addr }, 2682 { .type = PF_NL_DST_ADDR, .off = _OUT(daddr), .cb = snl_attr_get_in6_addr }, 2683 { .type = PF_NL_SRC_PORT, .off = _OUT(sport), .cb = snl_attr_get_uint16 }, 2684 { .type = PF_NL_DST_PORT, .off = _OUT(dport), .cb = snl_attr_get_uint16 }, 2685 }; 2686 #undef _IN 2687 #undef _OUT 2688 SNL_DECLARE_PARSER(natlook_parser, struct genlmsghdr, snl_f_p_empty, ap_natlook); 2689 2690 int 2691 pfctl_natlook(struct pfctl_handle *h, const struct pfctl_natlook_key *k, 2692 struct pfctl_natlook *r) 2693 { 2694 struct snl_writer nw; 2695 struct snl_errmsg_data e = {}; 2696 struct nlmsghdr *hdr; 2697 uint32_t seq_id; 2698 int family_id; 2699 2700 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME); 2701 if (family_id == 0) 2702 return (ENOTSUP); 2703 2704 snl_init_writer(&h->ss, &nw); 2705 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_NATLOOK); 2706 hdr->nlmsg_flags |= NLM_F_DUMP; 2707 2708 snl_add_msg_attr_u8(&nw, PF_NL_AF, k->af); 2709 snl_add_msg_attr_u8(&nw, PF_NL_DIRECTION, k->direction); 2710 snl_add_msg_attr_u8(&nw, PF_NL_PROTO, k->proto); 2711 snl_add_msg_attr_ip6(&nw, PF_NL_SRC_ADDR, &k->saddr.v6); 2712 snl_add_msg_attr_ip6(&nw, PF_NL_DST_ADDR, &k->daddr.v6); 2713 snl_add_msg_attr_u16(&nw, PF_NL_SRC_PORT, k->sport); 2714 snl_add_msg_attr_u16(&nw, PF_NL_DST_PORT, k->dport); 2715 2716 if ((hdr = snl_finalize_msg(&nw)) == NULL) 2717 return (ENXIO); 2718 2719 seq_id = hdr->nlmsg_seq; 2720 2721 if (! snl_send_message(&h->ss, hdr)) 2722 return (ENXIO); 2723 2724 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) { 2725 if (! snl_parse_nlmsg(&h->ss, hdr, &natlook_parser, r)) 2726 continue; 2727 } 2728 2729 return (e.error); 2730 } 2731 2732 int 2733 pfctl_set_debug(struct pfctl_handle *h, uint32_t level) 2734 { 2735 struct snl_writer nw; 2736 struct snl_errmsg_data e = {}; 2737 struct nlmsghdr *hdr; 2738 uint32_t seq_id; 2739 int family_id; 2740 2741 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME); 2742 if (family_id == 0) 2743 return (ENOTSUP); 2744 2745 snl_init_writer(&h->ss, &nw); 2746 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_SET_DEBUG); 2747 2748 snl_add_msg_attr_u32(&nw, PF_SD_LEVEL, level); 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 } 2760 2761 return (e.error); 2762 } 2763 2764 int 2765 pfctl_set_timeout(struct pfctl_handle *h, uint32_t timeout, uint32_t seconds) 2766 { 2767 struct snl_writer nw; 2768 struct snl_errmsg_data e = {}; 2769 struct nlmsghdr *hdr; 2770 uint32_t seq_id; 2771 int family_id; 2772 2773 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME); 2774 if (family_id == 0) 2775 return (ENOTSUP); 2776 2777 snl_init_writer(&h->ss, &nw); 2778 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_SET_TIMEOUT); 2779 2780 snl_add_msg_attr_u32(&nw, PF_TO_TIMEOUT, timeout); 2781 snl_add_msg_attr_u32(&nw, PF_TO_SECONDS, seconds); 2782 2783 if ((hdr = snl_finalize_msg(&nw)) == NULL) 2784 return (ENXIO); 2785 2786 seq_id = hdr->nlmsg_seq; 2787 2788 if (! snl_send_message(&h->ss, hdr)) 2789 return (ENXIO); 2790 2791 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) { 2792 } 2793 2794 return (e.error); 2795 } 2796 2797 struct pfctl_nl_timeout { 2798 uint32_t seconds; 2799 }; 2800 #define _OUT(_field) offsetof(struct pfctl_nl_timeout, _field) 2801 static struct snl_attr_parser ap_get_timeout[] = { 2802 { .type = PF_TO_SECONDS, .off = _OUT(seconds), .cb = snl_attr_get_uint32 }, 2803 }; 2804 #undef _OUT 2805 SNL_DECLARE_PARSER(get_timeout_parser, struct genlmsghdr, snl_f_p_empty, ap_get_timeout); 2806 2807 int 2808 pfctl_get_timeout(struct pfctl_handle *h, uint32_t timeout, uint32_t *seconds) 2809 { 2810 struct snl_writer nw; 2811 struct pfctl_nl_timeout to = {}; 2812 struct snl_errmsg_data e = {}; 2813 struct nlmsghdr *hdr; 2814 uint32_t seq_id; 2815 int family_id; 2816 2817 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME); 2818 if (family_id == 0) 2819 return (ENOTSUP); 2820 2821 snl_init_writer(&h->ss, &nw); 2822 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GET_TIMEOUT); 2823 hdr->nlmsg_flags |= NLM_F_DUMP; 2824 2825 snl_add_msg_attr_u32(&nw, PF_TO_TIMEOUT, timeout); 2826 2827 if ((hdr = snl_finalize_msg(&nw)) == NULL) 2828 return (ENXIO); 2829 2830 seq_id = hdr->nlmsg_seq; 2831 2832 if (! snl_send_message(&h->ss, hdr)) 2833 return (ENXIO); 2834 2835 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) { 2836 if (! snl_parse_nlmsg(&h->ss, hdr, &get_timeout_parser, &to)) 2837 continue; 2838 } 2839 2840 if (seconds != NULL) 2841 *seconds = to.seconds; 2842 2843 return (e.error); 2844 } 2845 2846 int 2847 pfctl_set_limit(struct pfctl_handle *h, const int index, const uint limit) 2848 { 2849 struct snl_writer nw; 2850 struct snl_errmsg_data e = {}; 2851 struct nlmsghdr *hdr; 2852 uint32_t seq_id; 2853 int family_id; 2854 2855 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME); 2856 if (family_id == 0) 2857 return (ENOTSUP); 2858 2859 snl_init_writer(&h->ss, &nw); 2860 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_SET_LIMIT); 2861 2862 snl_add_msg_attr_u32(&nw, PF_LI_INDEX, index); 2863 snl_add_msg_attr_u32(&nw, PF_LI_LIMIT, limit); 2864 2865 if ((hdr = snl_finalize_msg(&nw)) == NULL) 2866 return (ENXIO); 2867 2868 seq_id = hdr->nlmsg_seq; 2869 2870 if (! snl_send_message(&h->ss, hdr)) 2871 return (ENXIO); 2872 2873 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) { 2874 } 2875 2876 return (e.error); 2877 } 2878 2879 struct pfctl_nl_limit { 2880 unsigned int limit; 2881 }; 2882 #define _OUT(_field) offsetof(struct pfctl_nl_limit, _field) 2883 static struct snl_attr_parser ap_get_limit[] = { 2884 { .type = PF_LI_LIMIT, .off = _OUT(limit), .cb = snl_attr_get_uint32 }, 2885 }; 2886 #undef _OUT 2887 SNL_DECLARE_PARSER(get_limit_parser, struct genlmsghdr, snl_f_p_empty, ap_get_limit); 2888 2889 int 2890 pfctl_get_limit(struct pfctl_handle *h, const int index, uint *limit) 2891 { 2892 struct snl_writer nw; 2893 struct pfctl_nl_limit li = {}; 2894 struct snl_errmsg_data e = {}; 2895 struct nlmsghdr *hdr; 2896 uint32_t seq_id; 2897 int family_id; 2898 2899 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME); 2900 if (family_id == 0) 2901 return (ENOTSUP); 2902 2903 snl_init_writer(&h->ss, &nw); 2904 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GET_LIMIT); 2905 hdr->nlmsg_flags |= NLM_F_DUMP; 2906 2907 snl_add_msg_attr_u32(&nw, PF_LI_INDEX, index); 2908 2909 if ((hdr = snl_finalize_msg(&nw)) == NULL) 2910 return (ENXIO); 2911 2912 seq_id = hdr->nlmsg_seq; 2913 2914 if (! snl_send_message(&h->ss, hdr)) 2915 return (ENXIO); 2916 2917 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) { 2918 if (! snl_parse_nlmsg(&h->ss, hdr, &get_limit_parser, &li)) 2919 continue; 2920 } 2921 2922 if (limit != NULL) 2923 *limit = li.limit; 2924 2925 return (e.error); 2926 } 2927 2928 struct pfctl_nl_begin_addrs { 2929 uint32_t ticket; 2930 }; 2931 #define _OUT(_field) offsetof(struct pfctl_nl_begin_addrs, _field) 2932 static struct snl_attr_parser ap_begin_addrs[] = { 2933 { .type = PF_BA_TICKET, .off = _OUT(ticket), .cb = snl_attr_get_uint32 }, 2934 }; 2935 #undef _OUT 2936 SNL_DECLARE_PARSER(begin_addrs_parser, struct genlmsghdr, snl_f_p_empty, ap_begin_addrs); 2937 2938 int 2939 pfctl_begin_addrs(struct pfctl_handle *h, uint32_t *ticket) 2940 { 2941 struct snl_writer nw; 2942 struct pfctl_nl_begin_addrs attrs = {}; 2943 struct snl_errmsg_data e = {}; 2944 struct nlmsghdr *hdr; 2945 uint32_t seq_id; 2946 int family_id; 2947 2948 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME); 2949 if (family_id == 0) 2950 return (ENOTSUP); 2951 2952 snl_init_writer(&h->ss, &nw); 2953 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_BEGIN_ADDRS); 2954 hdr->nlmsg_flags |= NLM_F_DUMP; 2955 2956 if ((hdr = snl_finalize_msg(&nw)) == NULL) 2957 return (ENXIO); 2958 2959 seq_id = hdr->nlmsg_seq; 2960 2961 if (! snl_send_message(&h->ss, hdr)) 2962 return (ENXIO); 2963 2964 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) { 2965 if (! snl_parse_nlmsg(&h->ss, hdr, &begin_addrs_parser, &attrs)) 2966 continue; 2967 } 2968 2969 if (ticket != NULL) 2970 *ticket = attrs.ticket; 2971 2972 return (e.error); 2973 } 2974 2975 int 2976 pfctl_add_addr(struct pfctl_handle *h, const struct pfioc_pooladdr *pa, int which) 2977 { 2978 struct snl_writer nw; 2979 struct snl_errmsg_data e = {}; 2980 struct nlmsghdr *hdr; 2981 uint32_t seq_id; 2982 int family_id; 2983 2984 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME); 2985 if (family_id == 0) 2986 return (ENOTSUP); 2987 2988 snl_init_writer(&h->ss, &nw); 2989 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_ADD_ADDR); 2990 2991 snl_add_msg_attr_u32(&nw, PF_AA_ACTION, pa->action); 2992 snl_add_msg_attr_u32(&nw, PF_AA_TICKET, pa->ticket); 2993 snl_add_msg_attr_u32(&nw, PF_AA_NR, pa->nr); 2994 snl_add_msg_attr_u32(&nw, PF_AA_R_NUM, pa->r_num); 2995 snl_add_msg_attr_u8(&nw, PF_AA_R_ACTION, pa->r_action); 2996 snl_add_msg_attr_u8(&nw, PF_AA_R_LAST, pa->r_last); 2997 snl_add_msg_attr_u8(&nw, PF_AA_AF, pa->af); 2998 snl_add_msg_attr_string(&nw, PF_AA_ANCHOR, pa->anchor); 2999 snl_add_msg_attr_pool_addr(&nw, PF_AA_ADDR, &pa->addr); 3000 snl_add_msg_attr_u32(&nw, PF_AA_WHICH, which); 3001 3002 if ((hdr = snl_finalize_msg(&nw)) == NULL) 3003 return (ENXIO); 3004 3005 seq_id = hdr->nlmsg_seq; 3006 3007 if (! snl_send_message(&h->ss, hdr)) 3008 return (ENXIO); 3009 3010 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) { 3011 } 3012 3013 return (e.error); 3014 } 3015 3016 static const struct snl_attr_parser ap_get_addrs[] = { 3017 { .type = PF_AA_NR, .off = 0, .cb = snl_attr_get_uint32 }, 3018 }; 3019 SNL_DECLARE_PARSER(get_addrs_parser, struct genlmsghdr, snl_f_p_empty, ap_get_addrs); 3020 3021 int 3022 pfctl_get_addrs(struct pfctl_handle *h, uint32_t ticket, uint32_t r_num, 3023 uint8_t r_action, const char *anchor, uint32_t *nr, int which) 3024 { 3025 struct snl_writer nw; 3026 struct snl_errmsg_data e = {}; 3027 struct nlmsghdr *hdr; 3028 uint32_t seq_id; 3029 int family_id; 3030 3031 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME); 3032 if (family_id == 0) 3033 return (ENOTSUP); 3034 3035 snl_init_writer(&h->ss, &nw); 3036 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GET_ADDRS); 3037 3038 snl_add_msg_attr_u32(&nw, PF_AA_TICKET, ticket); 3039 snl_add_msg_attr_u32(&nw, PF_AA_R_NUM, r_num); 3040 snl_add_msg_attr_u8(&nw, PF_AA_R_ACTION, r_action); 3041 snl_add_msg_attr_string(&nw, PF_AA_ANCHOR, anchor); 3042 snl_add_msg_attr_u32(&nw, PF_AA_WHICH, which); 3043 3044 if ((hdr = snl_finalize_msg(&nw)) == NULL) 3045 return (ENXIO); 3046 3047 seq_id = hdr->nlmsg_seq; 3048 3049 if (! snl_send_message(&h->ss, hdr)) 3050 return (ENXIO); 3051 3052 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) { 3053 if (! snl_parse_nlmsg(&h->ss, hdr, &get_addrs_parser, nr)) 3054 continue; 3055 } 3056 3057 return (e.error); 3058 } 3059 3060 #define _OUT(_field) offsetof(struct pf_pooladdr, _field) 3061 static const struct snl_attr_parser ap_pool_addr[] = { 3062 { .type = PF_PA_ADDR, .off = _OUT(addr), .arg = &addr_wrap_parser, .cb = snl_attr_get_nested }, 3063 { .type = PF_PA_IFNAME, .off = _OUT(ifname), .arg_u32 = IFNAMSIZ, .cb = snl_attr_copy_string }, 3064 }; 3065 SNL_DECLARE_ATTR_PARSER(pool_addr_parser, ap_pool_addr); 3066 #undef _OUT 3067 3068 #define _OUT(_field) offsetof(struct pfioc_pooladdr, _field) 3069 static const struct snl_attr_parser ap_get_addr[] = { 3070 { .type = PF_AA_ACTION, .off = _OUT(action), .cb = snl_attr_get_uint32 }, 3071 { .type = PF_AA_TICKET, .off = _OUT(ticket), .cb = snl_attr_get_uint32 }, 3072 { .type = PF_AA_NR, .off = _OUT(nr), .cb = snl_attr_get_uint32 }, 3073 { .type = PF_AA_R_NUM, .off = _OUT(r_num), .cb = snl_attr_get_uint32 }, 3074 { .type = PF_AA_R_ACTION, .off = _OUT(r_action), .cb = snl_attr_get_uint8 }, 3075 { .type = PF_AA_R_LAST, .off = _OUT(r_last), .cb = snl_attr_get_uint8 }, 3076 { .type = PF_AA_AF, .off = _OUT(af), .cb = snl_attr_get_uint8 }, 3077 { .type = PF_AA_ANCHOR, .off = _OUT(anchor), .arg_u32 = MAXPATHLEN, .cb = snl_attr_copy_string }, 3078 { .type = PF_AA_ADDR, .off = _OUT(addr), .arg = &pool_addr_parser, .cb = snl_attr_get_nested }, 3079 }; 3080 SNL_DECLARE_PARSER(get_addr_parser, struct genlmsghdr, snl_f_p_empty, ap_get_addr); 3081 #undef _OUT 3082 3083 int 3084 pfctl_get_addr(struct pfctl_handle *h, uint32_t ticket, uint32_t r_num, 3085 uint8_t r_action, const char *anchor, uint32_t nr, struct pfioc_pooladdr *pa, 3086 int which) 3087 { 3088 struct snl_writer nw; 3089 struct snl_errmsg_data e = {}; 3090 struct nlmsghdr *hdr; 3091 uint32_t seq_id; 3092 int family_id; 3093 3094 family_id =snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME); 3095 if (family_id == 0) 3096 return (ENOTSUP); 3097 3098 snl_init_writer(&h->ss, &nw); 3099 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GET_ADDR); 3100 3101 snl_add_msg_attr_u32(&nw, PF_AA_TICKET, ticket); 3102 snl_add_msg_attr_u32(&nw, PF_AA_R_NUM, r_num); 3103 snl_add_msg_attr_u8(&nw, PF_AA_R_ACTION, r_action); 3104 snl_add_msg_attr_string(&nw, PF_AA_ANCHOR, anchor); 3105 snl_add_msg_attr_u32(&nw, PF_AA_NR, nr); 3106 snl_add_msg_attr_u32(&nw, PF_AA_WHICH, which); 3107 3108 if ((hdr = snl_finalize_msg(&nw)) == NULL) 3109 return (ENXIO); 3110 3111 seq_id = hdr->nlmsg_seq; 3112 3113 if (! snl_send_message(&h->ss, hdr)) 3114 return (ENXIO); 3115 3116 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) { 3117 if (! snl_parse_nlmsg(&h->ss, hdr, &get_addr_parser, pa)) 3118 continue; 3119 } 3120 3121 return (e.error); 3122 } 3123 3124 #define _OUT(_field) offsetof(struct pfioc_ruleset, _field) 3125 static const struct snl_attr_parser ap_ruleset[] = { 3126 { .type = PF_RS_NR, .off = _OUT(nr), .cb = snl_attr_get_uint32 }, 3127 { .type = PF_RS_NAME, .off = _OUT(name), .arg = (void *)PF_ANCHOR_NAME_SIZE, .cb = snl_attr_copy_string }, 3128 }; 3129 SNL_DECLARE_PARSER(ruleset_parser, struct genlmsghdr, snl_f_p_empty, ap_ruleset); 3130 #undef _OUT 3131 3132 int 3133 pfctl_get_rulesets(struct pfctl_handle *h, const char *path, uint32_t *nr) 3134 { 3135 struct snl_writer nw; 3136 struct snl_errmsg_data e = {}; 3137 struct nlmsghdr *hdr; 3138 struct pfioc_ruleset rs = {}; 3139 uint32_t seq_id; 3140 int family_id; 3141 3142 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME); 3143 if (family_id == 0) 3144 return (ENOTSUP); 3145 3146 snl_init_writer(&h->ss, &nw); 3147 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GET_RULESETS); 3148 3149 snl_add_msg_attr_string(&nw, PF_RS_PATH, path); 3150 3151 if ((hdr = snl_finalize_msg(&nw)) == NULL) 3152 return (ENXIO); 3153 3154 seq_id = hdr->nlmsg_seq; 3155 3156 if (! snl_send_message(&h->ss, hdr)) 3157 return (ENXIO); 3158 3159 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) { 3160 if (! snl_parse_nlmsg(&h->ss, hdr, &ruleset_parser, &rs)) 3161 continue; 3162 } 3163 3164 *nr = rs.nr; 3165 3166 return (e.error); 3167 } 3168 3169 int 3170 pfctl_get_ruleset(struct pfctl_handle *h, const char *path, uint32_t nr, struct pfioc_ruleset *rs) 3171 { 3172 struct snl_writer nw; 3173 struct snl_errmsg_data e = {}; 3174 struct nlmsghdr *hdr; 3175 uint32_t seq_id; 3176 int family_id; 3177 3178 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME); 3179 if (family_id == 0) 3180 return (ENOTSUP); 3181 3182 snl_init_writer(&h->ss, &nw); 3183 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GET_RULESET); 3184 3185 snl_add_msg_attr_string(&nw, PF_RS_PATH, path); 3186 snl_add_msg_attr_u32(&nw, PF_RS_NR, nr); 3187 3188 if ((hdr = snl_finalize_msg(&nw)) == NULL) 3189 return (ENXIO); 3190 3191 seq_id = hdr->nlmsg_seq; 3192 3193 if (! snl_send_message(&h->ss, hdr)) 3194 return (ENXIO); 3195 3196 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) { 3197 if (! snl_parse_nlmsg(&h->ss, hdr, &ruleset_parser, rs)) 3198 continue; 3199 } 3200 3201 return (e.error); 3202 } 3203 3204 #define _OUT(_field) offsetof(struct pfctl_src_node, _field) 3205 static struct snl_attr_parser ap_srcnode[] = { 3206 { .type = PF_SN_ADDR, .off = _OUT(addr), .cb = snl_attr_get_in6_addr }, 3207 { .type = PF_SN_RADDR, .off = _OUT(raddr), .cb = snl_attr_get_in6_addr }, 3208 { .type = PF_SN_RULE_NR, .off = _OUT(rule), .cb = snl_attr_get_uint32 }, 3209 { .type = PF_SN_BYTES_IN, .off = _OUT(bytes[0]), .cb = snl_attr_get_uint64 }, 3210 { .type = PF_SN_BYTES_OUT, .off = _OUT(bytes[1]), .cb = snl_attr_get_uint64 }, 3211 { .type = PF_SN_PACKETS_IN, .off = _OUT(packets[0]), .cb = snl_attr_get_uint64 }, 3212 { .type = PF_SN_PACKETS_OUT, .off = _OUT(packets[1]), .cb = snl_attr_get_uint64 }, 3213 { .type = PF_SN_STATES, .off = _OUT(states), .cb = snl_attr_get_uint32 }, 3214 { .type = PF_SN_CONNECTIONS, .off = _OUT(conn), .cb = snl_attr_get_uint32 }, 3215 { .type = PF_SN_AF, .off = _OUT(af), .cb = snl_attr_get_uint8 }, 3216 { .type = PF_SN_RULE_TYPE, .off = _OUT(ruletype), .cb = snl_attr_get_uint8 }, 3217 { .type = PF_SN_CREATION, .off = _OUT(creation), .cb = snl_attr_get_uint64 }, 3218 { .type = PF_SN_EXPIRE, .off = _OUT(expire), .cb = snl_attr_get_uint64 }, 3219 { .type = PF_SN_CONNECTION_RATE, .off = _OUT(conn_rate), .arg = &pfctl_threshold_parser, .cb = snl_attr_get_nested }, 3220 { .type = PF_SN_RAF, .off = _OUT(raf), .cb = snl_attr_get_uint8 }, 3221 { .type = PF_SN_NODE_TYPE, .off = _OUT(type), .cb = snl_attr_get_uint8 }, 3222 }; 3223 #undef _OUT 3224 SNL_DECLARE_PARSER(srcnode_parser, struct genlmsghdr, snl_f_p_empty, ap_srcnode); 3225 3226 int 3227 pfctl_get_srcnodes(struct pfctl_handle *h, pfctl_get_srcnode_fn fn, void *arg) 3228 { 3229 struct snl_writer nw; 3230 struct pfctl_src_node sn; 3231 struct snl_errmsg_data e = {}; 3232 struct nlmsghdr *hdr; 3233 uint32_t seq_id; 3234 int family_id; 3235 int ret; 3236 3237 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME); 3238 if (family_id == 0) 3239 return (ENOTSUP); 3240 3241 snl_init_writer(&h->ss, &nw); 3242 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GET_SRCNODES); 3243 3244 if ((hdr = snl_finalize_msg(&nw)) == NULL) 3245 return (ENXIO); 3246 3247 seq_id = hdr->nlmsg_seq; 3248 3249 if (!snl_send_message(&h->ss, hdr)) 3250 return (ENXIO); 3251 3252 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) { 3253 bzero(&sn, sizeof(sn)); 3254 if (!snl_parse_nlmsg(&h->ss, hdr, &srcnode_parser, &sn)) 3255 continue; 3256 3257 ret = fn(&sn, arg); 3258 if (ret != 0) 3259 return (ret); 3260 } 3261 3262 return (e.error); 3263 } 3264 3265 static struct snl_attr_parser ap_ndel[] = { 3266 { .type = PF_T_NBR_DELETED, .off = 0, .cb = snl_attr_get_uint32 }, 3267 }; 3268 SNL_DECLARE_PARSER(ndel_parser, struct genlmsghdr, snl_f_p_empty, ap_ndel); 3269 3270 int 3271 pfctl_clear_tables(struct pfctl_handle *h, struct pfr_table *filter, 3272 int *ndel, int flags) 3273 { 3274 struct snl_writer nw; 3275 struct snl_errmsg_data e = {}; 3276 struct nlmsghdr *hdr; 3277 uint32_t seq_id; 3278 int family_id; 3279 3280 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME); 3281 if (family_id == 0) 3282 return (ENOTSUP); 3283 3284 snl_init_writer(&h->ss, &nw); 3285 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_CLEAR_TABLES); 3286 3287 snl_add_msg_attr_string(&nw, PF_T_ANCHOR, filter->pfrt_anchor); 3288 snl_add_msg_attr_string(&nw, PF_T_NAME, filter->pfrt_name); 3289 snl_add_msg_attr_u32(&nw, PF_T_TABLE_FLAGS, filter->pfrt_flags); 3290 snl_add_msg_attr_u32(&nw, PF_T_FLAGS, flags); 3291 3292 if ((hdr = snl_finalize_msg(&nw)) == NULL) 3293 return (ENXIO); 3294 3295 seq_id = hdr->nlmsg_seq; 3296 3297 if (!snl_send_message(&h->ss, hdr)) 3298 return (ENXIO); 3299 3300 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) { 3301 if (!snl_parse_nlmsg(&h->ss, hdr, &ndel_parser, ndel)) 3302 continue; 3303 } 3304 3305 return (e.error); 3306 } 3307 3308 static struct snl_attr_parser ap_nadd[] = { 3309 { .type = PF_T_NBR_ADDED, .off = 0, .cb = snl_attr_get_uint32 }, 3310 }; 3311 SNL_DECLARE_PARSER(nadd_parser, struct genlmsghdr, snl_f_p_empty, ap_nadd); 3312 int 3313 pfctl_add_table(struct pfctl_handle *h, struct pfr_table *table, 3314 int *nadd, int flags) 3315 { 3316 struct snl_writer nw; 3317 struct snl_errmsg_data e = {}; 3318 struct nlmsghdr *hdr; 3319 uint32_t seq_id; 3320 int family_id; 3321 3322 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME); 3323 if (family_id == 0) 3324 return (ENOTSUP); 3325 3326 snl_init_writer(&h->ss, &nw); 3327 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_ADD_TABLE); 3328 3329 snl_add_msg_attr_string(&nw, PF_T_ANCHOR, table->pfrt_anchor); 3330 snl_add_msg_attr_string(&nw, PF_T_NAME, table->pfrt_name); 3331 snl_add_msg_attr_u32(&nw, PF_T_TABLE_FLAGS, table->pfrt_flags); 3332 snl_add_msg_attr_u32(&nw, PF_T_FLAGS, flags); 3333 3334 if ((hdr = snl_finalize_msg(&nw)) == NULL) 3335 return (ENXIO); 3336 3337 seq_id = hdr->nlmsg_seq; 3338 3339 if (!snl_send_message(&h->ss, hdr)) 3340 return (ENXIO); 3341 3342 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) { 3343 if (!snl_parse_nlmsg(&h->ss, hdr, &nadd_parser, nadd)) 3344 continue; 3345 } 3346 3347 return (e.error); 3348 } 3349 3350 int 3351 pfctl_del_table(struct pfctl_handle *h, struct pfr_table *table, 3352 int *ndel, int flags) 3353 { 3354 struct snl_writer nw; 3355 struct snl_errmsg_data e = {}; 3356 struct nlmsghdr *hdr; 3357 uint32_t seq_id; 3358 int family_id; 3359 3360 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME); 3361 if (family_id == 0) 3362 return (ENOTSUP); 3363 3364 snl_init_writer(&h->ss, &nw); 3365 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_DEL_TABLE); 3366 3367 snl_add_msg_attr_string(&nw, PF_T_ANCHOR, table->pfrt_anchor); 3368 snl_add_msg_attr_string(&nw, PF_T_NAME, table->pfrt_name); 3369 snl_add_msg_attr_u32(&nw, PF_T_TABLE_FLAGS, table->pfrt_flags); 3370 snl_add_msg_attr_u32(&nw, PF_T_FLAGS, flags); 3371 3372 if ((hdr = snl_finalize_msg(&nw)) == NULL) 3373 return (ENXIO); 3374 3375 seq_id = hdr->nlmsg_seq; 3376 3377 if (!snl_send_message(&h->ss, hdr)) 3378 return (ENXIO); 3379 3380 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) { 3381 if (!snl_parse_nlmsg(&h->ss, hdr, &ndel_parser, ndel)) 3382 continue; 3383 } 3384 3385 return (e.error); 3386 } 3387 3388 static bool 3389 snl_attr_get_uint64_into_int_array(struct snl_state *ss, struct nlattr *nla, 3390 const void *arg, void *target) 3391 { 3392 uint64_t *u64target; 3393 struct snl_uint64_array a = { 3394 .count = 0, 3395 .max = (size_t)arg, 3396 }; 3397 bool error; 3398 3399 u64target = malloc(a.max * sizeof(uint64_t)); 3400 a.array = u64target; 3401 3402 error = snl_parse_header(ss, NLA_DATA(nla), NLA_DATA_LEN(nla), &array_parser, &a); 3403 if (! error) 3404 return (error); 3405 3406 for (size_t i = 0; i < a.count; i++) 3407 ((int *)target)[i] = (int)u64target[i]; 3408 3409 free(u64target); 3410 3411 return (true); 3412 } 3413 3414 #define _OUT(_field) offsetof(struct pfr_table, _field) 3415 static const struct snl_attr_parser ap_table[] = { 3416 { .type = PF_T_ANCHOR, .off = _OUT(pfrt_anchor), .arg = (void *)MAXPATHLEN, .cb = snl_attr_copy_string }, 3417 { .type = PF_T_NAME, .off = _OUT(pfrt_name), .arg = (void *)PF_TABLE_NAME_SIZE, .cb =snl_attr_copy_string }, 3418 { .type = PF_T_TABLE_FLAGS, .off = _OUT(pfrt_flags), .cb = snl_attr_get_uint32 }, 3419 }; 3420 #undef _OUT 3421 SNL_DECLARE_ATTR_PARSER(table_parser, ap_table); 3422 #define _OUT(_field) offsetof(struct pfr_tstats, _field) 3423 static struct snl_attr_parser ap_tstats[] = { 3424 { .type = PF_TS_TABLE, .off = _OUT(pfrts_t), .arg = &table_parser, .cb = snl_attr_get_nested }, 3425 { .type = PF_TS_PACKETS, .off = _OUT(pfrts_packets), .arg = (void *)(PFR_DIR_MAX * PFR_OP_TABLE_MAX), .cb = snl_attr_get_uint64_array}, 3426 { .type = PF_TS_BYTES, .off = _OUT(pfrts_bytes), .arg = (void *)(PFR_DIR_MAX * PFR_OP_TABLE_MAX), .cb = snl_attr_get_uint64_array }, 3427 { .type = PF_TS_MATCH, .off = _OUT(pfrts_match), .cb = snl_attr_get_uint64 }, 3428 {. type = PF_TS_NOMATCH, .off = _OUT(pfrts_nomatch), .cb = snl_attr_get_uint64 }, 3429 { .type = PF_TS_TZERO, .off = _OUT(pfrts_tzero), .cb = snl_attr_get_uint64 }, 3430 { .type = PF_TS_REFCNT, .off = _OUT(pfrts_cnt), . arg = (void *)PFR_REFCNT_MAX, .cb = snl_attr_get_uint64_into_int_array }, 3431 }; 3432 #undef _OUT 3433 SNL_DECLARE_PARSER(tstats_parser, struct genlmsghdr, snl_f_p_empty, ap_tstats); 3434 3435 int 3436 pfctl_get_tstats(struct pfctl_handle *h, const struct pfr_table *filter, 3437 pfctl_get_tstats_fn fn, void *arg) 3438 { 3439 struct snl_writer nw; 3440 struct snl_errmsg_data e = {}; 3441 struct nlmsghdr *hdr; 3442 uint32_t seq_id; 3443 int family_id; 3444 int ret; 3445 3446 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME); 3447 if (family_id == 0) 3448 return (ENOTSUP); 3449 3450 snl_init_writer(&h->ss, &nw); 3451 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GET_TSTATS); 3452 3453 snl_add_msg_attr_string(&nw, PF_T_ANCHOR, filter->pfrt_anchor); 3454 snl_add_msg_attr_string(&nw, PF_T_NAME, filter->pfrt_name); 3455 snl_add_msg_attr_u32(&nw, PF_T_TABLE_FLAGS, filter->pfrt_flags); 3456 3457 if ((hdr = snl_finalize_msg(&nw)) == NULL) 3458 return (ENXIO); 3459 3460 seq_id = hdr->nlmsg_seq; 3461 3462 if (!snl_send_message(&h->ss, hdr)) 3463 return (ENXIO); 3464 3465 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) { 3466 struct pfr_tstats tstats = {}; 3467 3468 if (!snl_parse_nlmsg(&h->ss, hdr, &tstats_parser, &tstats)) 3469 continue; 3470 3471 ret = fn(&tstats, arg); 3472 if (ret != 0) 3473 break; 3474 } 3475 3476 return (e.error); 3477 } 3478 3479 static struct snl_attr_parser ap_tstats_clr[] = { 3480 { .type = PF_TS_NZERO, .off = 0, .cb = snl_attr_get_uint64 }, 3481 }; 3482 SNL_DECLARE_PARSER(tstats_clr_parser, struct genlmsghdr, snl_f_p_empty, ap_tstats_clr); 3483 3484 int 3485 pfctl_clear_tstats(struct pfctl_handle *h, const struct pfr_table *filter, 3486 int *nzero, int flags) 3487 { 3488 struct snl_writer nw; 3489 struct snl_errmsg_data e = {}; 3490 struct nlmsghdr *hdr; 3491 uint64_t zero; 3492 uint32_t seq_id; 3493 int family_id; 3494 3495 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME); 3496 if (family_id == 0) 3497 return (ENOTSUP); 3498 3499 snl_init_writer(&h->ss, &nw); 3500 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_CLR_TSTATS); 3501 3502 snl_add_msg_attr_string(&nw, PF_T_ANCHOR, filter->pfrt_anchor); 3503 snl_add_msg_attr_string(&nw, PF_T_NAME, filter->pfrt_name); 3504 snl_add_msg_attr_u32(&nw, PF_T_TABLE_FLAGS, filter->pfrt_flags); 3505 snl_add_msg_attr_u32(&nw, PF_T_FLAGS, flags); 3506 3507 if ((hdr = snl_finalize_msg(&nw)) == NULL) 3508 return (ENXIO); 3509 3510 seq_id = hdr->nlmsg_seq; 3511 3512 if (!snl_send_message(&h->ss, hdr)) 3513 return (ENXIO); 3514 3515 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) { 3516 if (!snl_parse_nlmsg(&h->ss, hdr, &tstats_clr_parser, &zero)) 3517 continue; 3518 if (nzero) 3519 *nzero = (uint32_t)zero; 3520 } 3521 3522 return (e.error); 3523 } 3524 3525 static struct snl_attr_parser ap_clr_addrs[] = { 3526 { .type = PF_T_NBR_DELETED, .off = 0, .cb = snl_attr_get_uint64 }, 3527 }; 3528 SNL_DECLARE_PARSER(clr_addrs_parser, struct genlmsghdr, snl_f_p_empty, ap_clr_addrs); 3529 3530 int 3531 pfctl_clear_addrs(struct pfctl_handle *h, const struct pfr_table *filter, 3532 int *ndel, int flags) 3533 { 3534 struct snl_writer nw; 3535 struct snl_errmsg_data e = {}; 3536 struct nlmsghdr *hdr; 3537 uint64_t del; 3538 uint32_t seq_id; 3539 int family_id; 3540 3541 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME); 3542 if (family_id == 0) 3543 return (ENOTSUP); 3544 3545 snl_init_writer(&h->ss, &nw); 3546 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_CLR_ADDRS); 3547 3548 snl_add_msg_attr_string(&nw, PF_T_ANCHOR, filter->pfrt_anchor); 3549 snl_add_msg_attr_string(&nw, PF_T_NAME, filter->pfrt_name); 3550 snl_add_msg_attr_u32(&nw, PF_T_TABLE_FLAGS, filter->pfrt_flags); 3551 snl_add_msg_attr_u32(&nw, PF_T_FLAGS, flags); 3552 3553 if ((hdr = snl_finalize_msg(&nw)) == NULL) 3554 return (ENXIO); 3555 3556 seq_id = hdr->nlmsg_seq; 3557 3558 if (!snl_send_message(&h->ss, hdr)) 3559 return (ENXIO); 3560 3561 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) { 3562 if (!snl_parse_nlmsg(&h->ss, hdr, &clr_addrs_parser, &del)) 3563 continue; 3564 if (ndel) 3565 *ndel = (uint32_t)del; 3566 } 3567 3568 return (e.error); 3569 } 3570 3571