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 }; 1703 #undef _OUT 1704 SNL_DECLARE_PARSER(getrule_parser, struct genlmsghdr, snl_f_p_empty, ap_getrule); 1705 1706 int 1707 pfctl_get_clear_rule_h(struct pfctl_handle *h, uint32_t nr, uint32_t ticket, 1708 const char *anchor, uint32_t ruleset, struct pfctl_rule *rule, 1709 char *anchor_call, bool clear) 1710 { 1711 struct pfctl_nl_get_rule attrs = {}; 1712 struct snl_errmsg_data e = {}; 1713 struct nlmsghdr *hdr; 1714 struct snl_writer nw; 1715 uint32_t seq_id; 1716 int family_id; 1717 1718 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME); 1719 if (family_id == 0) 1720 return (ENOTSUP); 1721 1722 snl_init_writer(&h->ss, &nw); 1723 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GETRULE); 1724 hdr->nlmsg_flags |= NLM_F_DUMP; 1725 1726 snl_add_msg_attr_string(&nw, PF_GR_ANCHOR, anchor); 1727 snl_add_msg_attr_u8(&nw, PF_GR_ACTION, ruleset); 1728 snl_add_msg_attr_u32(&nw, PF_GR_NR, nr); 1729 snl_add_msg_attr_u32(&nw, PF_GR_TICKET, ticket); 1730 snl_add_msg_attr_u8(&nw, PF_GR_CLEAR, clear); 1731 1732 hdr = snl_finalize_msg(&nw); 1733 if (hdr == NULL) 1734 return (ENOMEM); 1735 1736 seq_id = hdr->nlmsg_seq; 1737 if (! snl_send_message(&h->ss, hdr)) 1738 return (ENXIO); 1739 1740 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) { 1741 if (! snl_parse_nlmsg(&h->ss, hdr, &getrule_parser, &attrs)) 1742 continue; 1743 } 1744 1745 memcpy(rule, &attrs.r, sizeof(attrs.r)); 1746 strlcpy(anchor_call, attrs.anchor_call, MAXPATHLEN); 1747 1748 return (e.error); 1749 } 1750 1751 int 1752 pfctl_get_clear_rule(int dev, uint32_t nr, uint32_t ticket, 1753 const char *anchor, uint32_t ruleset, struct pfctl_rule *rule, 1754 char *anchor_call, bool clear) 1755 { 1756 nvlist_t *nvl; 1757 int ret; 1758 1759 nvl = nvlist_create(0); 1760 if (nvl == 0) 1761 return (ENOMEM); 1762 1763 nvlist_add_number(nvl, "nr", nr); 1764 nvlist_add_number(nvl, "ticket", ticket); 1765 nvlist_add_string(nvl, "anchor", anchor); 1766 nvlist_add_number(nvl, "ruleset", ruleset); 1767 1768 if (clear) 1769 nvlist_add_bool(nvl, "clear_counter", true); 1770 1771 if ((ret = pfctl_do_ioctl(dev, DIOCGETRULENV, 8192, &nvl)) != 0) 1772 goto out; 1773 1774 pf_nvrule_to_rule(nvlist_get_nvlist(nvl, "rule"), rule); 1775 1776 if (anchor_call) 1777 strlcpy(anchor_call, nvlist_get_string(nvl, "anchor_call"), 1778 MAXPATHLEN); 1779 1780 out: 1781 nvlist_destroy(nvl); 1782 return (ret); 1783 } 1784 1785 int 1786 pfctl_set_keepcounters(int dev, bool keep) 1787 { 1788 struct pfioc_nv nv; 1789 nvlist_t *nvl; 1790 int ret; 1791 1792 nvl = nvlist_create(0); 1793 1794 nvlist_add_bool(nvl, "keep_counters", keep); 1795 1796 nv.data = nvlist_pack(nvl, &nv.len); 1797 nv.size = nv.len; 1798 1799 nvlist_destroy(nvl); 1800 1801 ret = ioctl(dev, DIOCKEEPCOUNTERS, &nv); 1802 1803 free(nv.data); 1804 return (ret); 1805 } 1806 1807 struct pfctl_creator { 1808 uint32_t id; 1809 }; 1810 #define _IN(_field) offsetof(struct genlmsghdr, _field) 1811 #define _OUT(_field) offsetof(struct pfctl_creator, _field) 1812 static struct snl_attr_parser ap_creators[] = { 1813 { .type = PF_ST_CREATORID, .off = _OUT(id), .cb = snl_attr_get_uint32 }, 1814 }; 1815 #undef _IN 1816 #undef _OUT 1817 SNL_DECLARE_PARSER(creator_parser, struct genlmsghdr, snl_f_p_empty, ap_creators); 1818 1819 static int 1820 pfctl_get_creators_nl(struct snl_state *ss, uint32_t *creators, size_t *len) 1821 { 1822 1823 int family_id = snl_get_genl_family(ss, PFNL_FAMILY_NAME); 1824 size_t i = 0; 1825 1826 struct nlmsghdr *hdr; 1827 struct snl_writer nw; 1828 1829 if (family_id == 0) 1830 return (ENOTSUP); 1831 1832 snl_init_writer(ss, &nw); 1833 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GETCREATORS); 1834 hdr->nlmsg_flags |= NLM_F_DUMP; 1835 hdr = snl_finalize_msg(&nw); 1836 if (hdr == NULL) 1837 return (ENOMEM); 1838 uint32_t seq_id = hdr->nlmsg_seq; 1839 1840 snl_send_message(ss, hdr); 1841 1842 struct snl_errmsg_data e = {}; 1843 while ((hdr = snl_read_reply_multi(ss, seq_id, &e)) != NULL) { 1844 struct pfctl_creator c; 1845 bzero(&c, sizeof(c)); 1846 1847 if (!snl_parse_nlmsg(ss, hdr, &creator_parser, &c)) 1848 continue; 1849 1850 creators[i] = c.id; 1851 i++; 1852 if (i > *len) 1853 return (E2BIG); 1854 } 1855 1856 *len = i; 1857 1858 return (0); 1859 } 1860 1861 int 1862 pfctl_get_creatorids(struct pfctl_handle *h, uint32_t *creators, size_t *len) 1863 { 1864 int error; 1865 1866 error = pfctl_get_creators_nl(&h->ss, creators, len); 1867 1868 return (error); 1869 } 1870 1871 static inline bool 1872 snl_attr_get_pfaddr(struct snl_state *ss __unused, struct nlattr *nla, 1873 const void *arg __unused, void *target) 1874 { 1875 memcpy(target, NLA_DATA(nla), NLA_DATA_LEN(nla)); 1876 return (true); 1877 } 1878 1879 static inline bool 1880 snl_attr_store_ifname(struct snl_state *ss __unused, struct nlattr *nla, 1881 const void *arg __unused, void *target) 1882 { 1883 size_t maxlen = NLA_DATA_LEN(nla); 1884 1885 if (strnlen((char *)NLA_DATA(nla), maxlen) < maxlen) { 1886 strlcpy(target, (char *)NLA_DATA(nla), maxlen); 1887 return (true); 1888 } 1889 return (false); 1890 } 1891 1892 #define _OUT(_field) offsetof(struct pfctl_state_peer, _field) 1893 static const struct snl_attr_parser nla_p_speer[] = { 1894 { .type = PF_STP_SEQLO, .off = _OUT(seqlo), .cb = snl_attr_get_uint32 }, 1895 { .type = PF_STP_SEQHI, .off = _OUT(seqhi), .cb = snl_attr_get_uint32 }, 1896 { .type = PF_STP_SEQDIFF, .off = _OUT(seqdiff), .cb = snl_attr_get_uint32 }, 1897 { .type = PF_STP_STATE, .off = _OUT(state), .cb = snl_attr_get_uint8 }, 1898 { .type = PF_STP_WSCALE, .off = _OUT(wscale), .cb = snl_attr_get_uint8 }, 1899 }; 1900 SNL_DECLARE_ATTR_PARSER(speer_parser, nla_p_speer); 1901 #undef _OUT 1902 1903 #define _OUT(_field) offsetof(struct pfctl_state_key, _field) 1904 static const struct snl_attr_parser nla_p_skey[] = { 1905 { .type = PF_STK_ADDR0, .off = _OUT(addr[0]), .cb = snl_attr_get_pfaddr }, 1906 { .type = PF_STK_ADDR1, .off = _OUT(addr[1]), .cb = snl_attr_get_pfaddr }, 1907 { .type = PF_STK_PORT0, .off = _OUT(port[0]), .cb = snl_attr_get_uint16 }, 1908 { .type = PF_STK_PORT1, .off = _OUT(port[1]), .cb = snl_attr_get_uint16 }, 1909 { .type = PF_STK_AF, .off = _OUT(af), .cb = snl_attr_get_uint8 }, 1910 { .type = PF_STK_PROTO, .off = _OUT(proto), .cb = snl_attr_get_uint16 }, 1911 }; 1912 SNL_DECLARE_ATTR_PARSER(skey_parser, nla_p_skey); 1913 #undef _OUT 1914 1915 #define _IN(_field) offsetof(struct genlmsghdr, _field) 1916 #define _OUT(_field) offsetof(struct pfctl_state, _field) 1917 static struct snl_attr_parser ap_state[] = { 1918 { .type = PF_ST_ID, .off = _OUT(id), .cb = snl_attr_get_uint64 }, 1919 { .type = PF_ST_CREATORID, .off = _OUT(creatorid), .cb = snl_attr_get_uint32 }, 1920 { .type = PF_ST_IFNAME, .off = _OUT(ifname), .cb = snl_attr_store_ifname }, 1921 { .type = PF_ST_ORIG_IFNAME, .off = _OUT(orig_ifname), .cb = snl_attr_store_ifname }, 1922 { .type = PF_ST_KEY_WIRE, .off = _OUT(key[0]), .arg = &skey_parser, .cb = snl_attr_get_nested }, 1923 { .type = PF_ST_KEY_STACK, .off = _OUT(key[1]), .arg = &skey_parser, .cb = snl_attr_get_nested }, 1924 { .type = PF_ST_PEER_SRC, .off = _OUT(src), .arg = &speer_parser, .cb = snl_attr_get_nested }, 1925 { .type = PF_ST_PEER_DST, .off = _OUT(dst), .arg = &speer_parser, .cb = snl_attr_get_nested }, 1926 { .type = PF_ST_RT_ADDR, .off = _OUT(rt_addr), .cb = snl_attr_get_pfaddr }, 1927 { .type = PF_ST_RULE, .off = _OUT(rule), .cb = snl_attr_get_uint32 }, 1928 { .type = PF_ST_ANCHOR, .off = _OUT(anchor), .cb = snl_attr_get_uint32 }, 1929 { .type = PF_ST_NAT_RULE, .off = _OUT(nat_rule), .cb = snl_attr_get_uint32 }, 1930 { .type = PF_ST_CREATION, .off = _OUT(creation), .cb = snl_attr_get_uint32 }, 1931 { .type = PF_ST_EXPIRE, .off = _OUT(expire), .cb = snl_attr_get_uint32 }, 1932 { .type = PF_ST_PACKETS0, .off = _OUT(packets[0]), .cb = snl_attr_get_uint64 }, 1933 { .type = PF_ST_PACKETS1, .off = _OUT(packets[1]), .cb = snl_attr_get_uint64 }, 1934 { .type = PF_ST_BYTES0, .off = _OUT(bytes[0]), .cb = snl_attr_get_uint64 }, 1935 { .type = PF_ST_BYTES1, .off = _OUT(bytes[1]), .cb = snl_attr_get_uint64 }, 1936 { .type = PF_ST_DIRECTION, .off = _OUT(direction), .cb = snl_attr_get_uint8 }, 1937 { .type = PF_ST_LOG, .off = _OUT(log), .cb = snl_attr_get_uint8 }, 1938 { .type = PF_ST_STATE_FLAGS, .off = _OUT(state_flags), .cb = snl_attr_get_uint16 }, 1939 { .type = PF_ST_SYNC_FLAGS, .off = _OUT(sync_flags), .cb = snl_attr_get_uint8 }, 1940 { .type = PF_ST_RTABLEID, .off = _OUT(rtableid), .cb = snl_attr_get_int32 }, 1941 { .type = PF_ST_MIN_TTL, .off = _OUT(min_ttl), .cb = snl_attr_get_uint8 }, 1942 { .type = PF_ST_MAX_MSS, .off = _OUT(max_mss), .cb = snl_attr_get_uint16 }, 1943 { .type = PF_ST_DNPIPE, .off = _OUT(dnpipe), .cb = snl_attr_get_uint16 }, 1944 { .type = PF_ST_DNRPIPE, .off = _OUT(dnrpipe), .cb = snl_attr_get_uint16 }, 1945 { .type = PF_ST_RT, .off = _OUT(rt), .cb = snl_attr_get_uint8 }, 1946 { .type = PF_ST_RT_IFNAME, .off = _OUT(rt_ifname), .cb = snl_attr_store_ifname }, 1947 { .type = PF_ST_SRC_NODE_FLAGS, .off = _OUT(src_node_flags), .cb = snl_attr_get_uint8 }, 1948 { .type = PF_ST_RT_AF, .off = _OUT(rt_af), .cb = snl_attr_get_uint8 }, 1949 }; 1950 #undef _IN 1951 #undef _OUT 1952 SNL_DECLARE_PARSER(state_parser, struct genlmsghdr, snl_f_p_empty, ap_state); 1953 1954 static const struct snl_hdr_parser *all_parsers[] = { 1955 &state_parser, &skey_parser, &speer_parser, 1956 &creator_parser, &getrules_parser 1957 }; 1958 1959 static int 1960 pfctl_get_states_nl(struct pfctl_state_filter *filter, struct snl_state *ss, pfctl_get_state_fn f, void *arg) 1961 { 1962 SNL_VERIFY_PARSERS(all_parsers); 1963 int family_id = snl_get_genl_family(ss, PFNL_FAMILY_NAME); 1964 int ret; 1965 1966 struct nlmsghdr *hdr; 1967 struct snl_writer nw; 1968 1969 if (family_id == 0) 1970 return (ENOTSUP); 1971 1972 snl_init_writer(ss, &nw); 1973 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GETSTATES); 1974 hdr->nlmsg_flags |= NLM_F_DUMP; 1975 snl_add_msg_attr_string(&nw, PF_ST_IFNAME, filter->ifname); 1976 snl_add_msg_attr_u16(&nw, PF_ST_PROTO, filter->proto); 1977 snl_add_msg_attr_u8(&nw, PF_ST_AF, filter->af); 1978 snl_add_msg_attr_ip6(&nw, PF_ST_FILTER_ADDR, &filter->addr.v6); 1979 snl_add_msg_attr_ip6(&nw, PF_ST_FILTER_MASK, &filter->mask.v6); 1980 1981 hdr = snl_finalize_msg(&nw); 1982 if (hdr == NULL) 1983 return (ENOMEM); 1984 1985 uint32_t seq_id = hdr->nlmsg_seq; 1986 1987 snl_send_message(ss, hdr); 1988 1989 struct snl_errmsg_data e = {}; 1990 while ((hdr = snl_read_reply_multi(ss, seq_id, &e)) != NULL) { 1991 struct pfctl_state s; 1992 bzero(&s, sizeof(s)); 1993 if (!snl_parse_nlmsg(ss, hdr, &state_parser, &s)) 1994 continue; 1995 1996 ret = f(&s, arg); 1997 if (ret != 0) 1998 return (ret); 1999 } 2000 2001 return (0); 2002 } 2003 2004 int 2005 pfctl_get_states_iter(pfctl_get_state_fn f, void *arg) 2006 { 2007 struct pfctl_state_filter filter = {}; 2008 return (pfctl_get_filtered_states_iter(&filter, f, arg)); 2009 } 2010 2011 int 2012 pfctl_get_filtered_states_iter(struct pfctl_state_filter *filter, pfctl_get_state_fn f, void *arg) 2013 { 2014 struct snl_state ss = {}; 2015 int error; 2016 2017 snl_init(&ss, NETLINK_GENERIC); 2018 error = pfctl_get_states_nl(filter, &ss, f, arg); 2019 snl_free(&ss); 2020 2021 return (error); 2022 } 2023 2024 static int 2025 pfctl_append_states(struct pfctl_state *s, void *arg) 2026 { 2027 struct pfctl_state *new; 2028 struct pfctl_states *states = (struct pfctl_states *)arg; 2029 2030 new = malloc(sizeof(*s)); 2031 if (new == NULL) 2032 return (ENOMEM); 2033 2034 memcpy(new, s, sizeof(*s)); 2035 2036 TAILQ_INSERT_TAIL(&states->states, new, entry); 2037 2038 return (0); 2039 } 2040 2041 int 2042 pfctl_get_states(int dev __unused, struct pfctl_states *states) 2043 { 2044 int ret; 2045 2046 bzero(states, sizeof(*states)); 2047 TAILQ_INIT(&states->states); 2048 2049 ret = pfctl_get_states_iter(pfctl_append_states, states); 2050 if (ret != 0) { 2051 pfctl_free_states(states); 2052 return (ret); 2053 } 2054 2055 return (0); 2056 } 2057 2058 void 2059 pfctl_free_states(struct pfctl_states *states) 2060 { 2061 struct pfctl_state *s, *tmp; 2062 2063 TAILQ_FOREACH_SAFE(s, &states->states, entry, tmp) { 2064 free(s); 2065 } 2066 2067 bzero(states, sizeof(*states)); 2068 } 2069 2070 struct pfctl_nl_clear_states { 2071 uint32_t killed; 2072 }; 2073 #define _OUT(_field) offsetof(struct pfctl_nl_clear_states, _field) 2074 static struct snl_attr_parser ap_clear_states[] = { 2075 { .type = PF_CS_KILLED, .off = _OUT(killed), .cb = snl_attr_get_uint32 }, 2076 }; 2077 #undef _OUT 2078 SNL_DECLARE_PARSER(clear_states_parser, struct genlmsghdr, snl_f_p_empty, ap_clear_states); 2079 2080 static int 2081 _pfctl_clear_states_h(struct pfctl_handle *h, const struct pfctl_kill *kill, 2082 unsigned int *killed, int cmd) 2083 { 2084 struct snl_writer nw; 2085 struct snl_errmsg_data e = {}; 2086 struct pfctl_nl_clear_states attrs = {}; 2087 struct nlmsghdr *hdr; 2088 uint32_t seq_id; 2089 int family_id; 2090 2091 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME); 2092 if (family_id == 0) 2093 return (ENOTSUP); 2094 2095 snl_init_writer(&h->ss, &nw); 2096 hdr = snl_create_genl_msg_request(&nw, family_id, cmd); 2097 hdr->nlmsg_flags |= NLM_F_DUMP; 2098 2099 snl_add_msg_attr_u64(&nw, PF_CS_CMP_ID, kill->cmp.id); 2100 snl_add_msg_attr_u32(&nw, PF_CS_CMP_CREATORID, htonl(kill->cmp.creatorid)); 2101 snl_add_msg_attr_u8(&nw, PF_CS_CMP_DIR, kill->cmp.direction); 2102 snl_add_msg_attr_u8(&nw, PF_CS_AF, kill->af); 2103 snl_add_msg_attr_u8(&nw, PF_CS_PROTO, kill->proto); 2104 snl_add_msg_attr_rule_addr(&nw, PF_CS_SRC, &kill->src); 2105 snl_add_msg_attr_rule_addr(&nw, PF_CS_DST, &kill->dst); 2106 snl_add_msg_attr_rule_addr(&nw, PF_CS_RT_ADDR, &kill->rt_addr); 2107 snl_add_msg_attr_string(&nw, PF_CS_IFNAME, kill->ifname); 2108 snl_add_msg_attr_string(&nw, PF_CS_LABEL, kill->label); 2109 snl_add_msg_attr_bool(&nw, PF_CS_KILL_MATCH, kill->kill_match); 2110 snl_add_msg_attr_bool(&nw, PF_CS_NAT, kill->nat); 2111 2112 if ((hdr = snl_finalize_msg(&nw)) == NULL) 2113 return (ENXIO); 2114 2115 seq_id = hdr->nlmsg_seq; 2116 2117 if (! snl_send_message(&h->ss, hdr)) 2118 return (ENXIO); 2119 2120 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) { 2121 if (! snl_parse_nlmsg(&h->ss, hdr, &clear_states_parser, &attrs)) 2122 continue; 2123 } 2124 2125 if (killed) 2126 *killed = attrs.killed; 2127 2128 return (e.error); 2129 } 2130 2131 int 2132 pfctl_clear_states_h(struct pfctl_handle *h, const struct pfctl_kill *kill, 2133 unsigned int *killed) 2134 { 2135 return(_pfctl_clear_states_h(h, kill, killed, PFNL_CMD_CLRSTATES)); 2136 } 2137 2138 int 2139 pfctl_kill_states_h(struct pfctl_handle *h, const struct pfctl_kill *kill, 2140 unsigned int *killed) 2141 { 2142 return(_pfctl_clear_states_h(h, kill, killed, PFNL_CMD_KILLSTATES)); 2143 } 2144 2145 static int 2146 _pfctl_clear_states(int dev __unused, const struct pfctl_kill *kill, 2147 unsigned int *killed, uint64_t cmd) 2148 { 2149 struct pfctl_handle *h; 2150 int ret; 2151 2152 h = pfctl_open(PF_DEVICE); 2153 if (h == NULL) 2154 return (ENODEV); 2155 2156 ret = _pfctl_clear_states_h(h, kill, killed, cmd); 2157 pfctl_close(h); 2158 2159 return (ret); 2160 } 2161 2162 int 2163 pfctl_clear_states(int dev __unused, const struct pfctl_kill *kill, 2164 unsigned int *killed) 2165 { 2166 return (_pfctl_clear_states(dev, kill, killed, PFNL_CMD_CLRSTATES)); 2167 } 2168 2169 int 2170 pfctl_kill_states(int dev __unused, const struct pfctl_kill *kill, unsigned int *killed) 2171 { 2172 return (_pfctl_clear_states(dev, kill, killed, PFNL_CMD_KILLSTATES)); 2173 } 2174 2175 int 2176 pfctl_clear_rules(int dev, const char *anchorname) 2177 { 2178 struct pfioc_trans trans; 2179 struct pfioc_trans_e transe[2]; 2180 int ret; 2181 2182 bzero(&trans, sizeof(trans)); 2183 bzero(&transe, sizeof(transe)); 2184 2185 transe[0].rs_num = PF_RULESET_SCRUB; 2186 if (strlcpy(transe[0].anchor, anchorname, sizeof(transe[0].anchor)) 2187 >= sizeof(transe[0].anchor)) 2188 return (E2BIG); 2189 2190 transe[1].rs_num = PF_RULESET_FILTER; 2191 if (strlcpy(transe[1].anchor, anchorname, sizeof(transe[1].anchor)) 2192 >= sizeof(transe[1].anchor)) 2193 return (E2BIG); 2194 2195 trans.size = 2; 2196 trans.esize = sizeof(transe[0]); 2197 trans.array = transe; 2198 2199 ret = ioctl(dev, DIOCXBEGIN, &trans); 2200 if (ret != 0) 2201 return (errno); 2202 ret = ioctl(dev, DIOCXCOMMIT, &trans); 2203 if (ret != 0) 2204 return (errno); 2205 2206 return (0); 2207 } 2208 2209 int 2210 pfctl_clear_nat(int dev, const char *anchorname) 2211 { 2212 struct pfioc_trans trans; 2213 struct pfioc_trans_e transe[3]; 2214 int ret; 2215 2216 bzero(&trans, sizeof(trans)); 2217 bzero(&transe, sizeof(transe)); 2218 2219 transe[0].rs_num = PF_RULESET_NAT; 2220 if (strlcpy(transe[0].anchor, anchorname, sizeof(transe[0].anchor)) 2221 >= sizeof(transe[0].anchor)) 2222 return (E2BIG); 2223 2224 transe[1].rs_num = PF_RULESET_BINAT; 2225 if (strlcpy(transe[1].anchor, anchorname, sizeof(transe[1].anchor)) 2226 >= sizeof(transe[0].anchor)) 2227 return (E2BIG); 2228 2229 transe[2].rs_num = PF_RULESET_RDR; 2230 if (strlcpy(transe[2].anchor, anchorname, sizeof(transe[2].anchor)) 2231 >= sizeof(transe[2].anchor)) 2232 return (E2BIG); 2233 2234 trans.size = 3; 2235 trans.esize = sizeof(transe[0]); 2236 trans.array = transe; 2237 2238 ret = ioctl(dev, DIOCXBEGIN, &trans); 2239 if (ret != 0) 2240 return (errno); 2241 ret = ioctl(dev, DIOCXCOMMIT, &trans); 2242 if (ret != 0) 2243 return (errno); 2244 2245 return (0); 2246 } 2247 2248 int 2249 pfctl_clear_eth_rules(int dev, const char *anchorname) 2250 { 2251 struct pfioc_trans trans; 2252 struct pfioc_trans_e transe; 2253 int ret; 2254 2255 bzero(&trans, sizeof(trans)); 2256 bzero(&transe, sizeof(transe)); 2257 2258 transe.rs_num = PF_RULESET_ETH; 2259 if (strlcpy(transe.anchor, anchorname, sizeof(transe.anchor)) 2260 >= sizeof(transe.anchor)) 2261 return (E2BIG); 2262 2263 trans.size = 1; 2264 trans.esize = sizeof(transe); 2265 trans.array = &transe; 2266 2267 ret = ioctl(dev, DIOCXBEGIN, &trans); 2268 if (ret != 0) 2269 return (errno); 2270 ret = ioctl(dev, DIOCXCOMMIT, &trans); 2271 if (ret != 0) 2272 return (errno); 2273 2274 return (0); 2275 } 2276 2277 static int 2278 _pfctl_get_limit(int dev, const int index, uint *limit) 2279 { 2280 struct pfioc_limit pl; 2281 2282 bzero(&pl, sizeof(pl)); 2283 pl.index = index; 2284 2285 if (ioctl(dev, DIOCGETLIMIT, &pl) == -1) 2286 return (errno); 2287 2288 *limit = pl.limit; 2289 2290 return (0); 2291 } 2292 2293 int 2294 pfctl_set_syncookies(int dev, const struct pfctl_syncookies *s) 2295 { 2296 struct pfioc_nv nv; 2297 nvlist_t *nvl; 2298 int ret; 2299 uint state_limit; 2300 uint64_t lim, hi, lo; 2301 2302 ret = _pfctl_get_limit(dev, PF_LIMIT_STATES, &state_limit); 2303 if (ret != 0) 2304 return (ret); 2305 2306 if (state_limit == 0) 2307 state_limit = INT_MAX; 2308 2309 lim = state_limit; 2310 hi = lim * s->highwater / 100; 2311 lo = lim * s->lowwater / 100; 2312 2313 if (lo == hi) 2314 hi++; 2315 2316 nvl = nvlist_create(0); 2317 2318 nvlist_add_bool(nvl, "enabled", s->mode != PFCTL_SYNCOOKIES_NEVER); 2319 nvlist_add_bool(nvl, "adaptive", s->mode == PFCTL_SYNCOOKIES_ADAPTIVE); 2320 nvlist_add_number(nvl, "highwater", hi); 2321 nvlist_add_number(nvl, "lowwater", lo); 2322 2323 nv.data = nvlist_pack(nvl, &nv.len); 2324 nv.size = nv.len; 2325 nvlist_destroy(nvl); 2326 nvl = NULL; 2327 2328 ret = ioctl(dev, DIOCSETSYNCOOKIES, &nv); 2329 2330 free(nv.data); 2331 if (ret != 0) 2332 return (errno); 2333 2334 return (0); 2335 } 2336 2337 int 2338 pfctl_get_syncookies(int dev, struct pfctl_syncookies *s) 2339 { 2340 nvlist_t *nvl; 2341 int ret; 2342 uint state_limit; 2343 bool enabled, adaptive; 2344 2345 ret = _pfctl_get_limit(dev, PF_LIMIT_STATES, &state_limit); 2346 if (ret != 0) 2347 return (ret); 2348 2349 if (state_limit == 0) 2350 state_limit = INT_MAX; 2351 2352 bzero(s, sizeof(*s)); 2353 2354 nvl = nvlist_create(0); 2355 2356 if ((ret = pfctl_do_ioctl(dev, DIOCGETSYNCOOKIES, 256, &nvl)) != 0) { 2357 ret = errno; 2358 goto out; 2359 } 2360 2361 enabled = nvlist_get_bool(nvl, "enabled"); 2362 adaptive = nvlist_get_bool(nvl, "adaptive"); 2363 2364 if (enabled) { 2365 if (adaptive) 2366 s->mode = PFCTL_SYNCOOKIES_ADAPTIVE; 2367 else 2368 s->mode = PFCTL_SYNCOOKIES_ALWAYS; 2369 } else { 2370 s->mode = PFCTL_SYNCOOKIES_NEVER; 2371 } 2372 2373 s->highwater = nvlist_get_number(nvl, "highwater") * 100 / state_limit; 2374 s->lowwater = nvlist_get_number(nvl, "lowwater") * 100 / state_limit; 2375 s->halfopen_states = nvlist_get_number(nvl, "halfopen_states"); 2376 2377 out: 2378 nvlist_destroy(nvl); 2379 return (ret); 2380 } 2381 2382 int 2383 pfctl_table_add_addrs(int dev, struct pfr_table *tbl, struct pfr_addr 2384 *addr, int size, int *nadd, int flags) 2385 { 2386 struct pfioc_table io; 2387 2388 if (tbl == NULL || size < 0 || (size && addr == NULL)) { 2389 return (EINVAL); 2390 } 2391 bzero(&io, sizeof io); 2392 io.pfrio_flags = flags; 2393 io.pfrio_table = *tbl; 2394 io.pfrio_buffer = addr; 2395 io.pfrio_esize = sizeof(*addr); 2396 io.pfrio_size = size; 2397 2398 if (ioctl(dev, DIOCRADDADDRS, &io)) 2399 return (errno); 2400 if (nadd != NULL) 2401 *nadd = io.pfrio_nadd; 2402 return (0); 2403 } 2404 2405 static void 2406 snl_add_msg_attr_table(struct snl_writer *nw, uint32_t type, 2407 const struct pfr_table *tbl) 2408 { 2409 int off; 2410 2411 off = snl_add_msg_attr_nested(nw, type); 2412 2413 snl_add_msg_attr_string(nw, PF_T_ANCHOR, tbl->pfrt_anchor); 2414 snl_add_msg_attr_string(nw, PF_T_NAME, tbl->pfrt_name); 2415 snl_add_msg_attr_u32(nw, PF_T_TABLE_FLAGS, tbl->pfrt_flags); 2416 2417 snl_end_attr_nested(nw, off); 2418 } 2419 2420 static void 2421 snl_add_msg_attr_pfr_addr(struct snl_writer *nw, uint32_t type, 2422 const struct pfr_addr *addr) 2423 { 2424 int off; 2425 2426 off = snl_add_msg_attr_nested(nw, type); 2427 2428 snl_add_msg_attr_u8(nw, PFR_A_AF, addr->pfra_af); 2429 snl_add_msg_attr_u8(nw, PFR_A_NET, addr->pfra_net); 2430 snl_add_msg_attr_bool(nw, PFR_A_NOT, addr->pfra_not); 2431 snl_add_msg_attr_ip6(nw, PFR_A_ADDR, &addr->pfra_ip6addr); 2432 2433 snl_end_attr_nested(nw, off); 2434 } 2435 2436 static struct snl_attr_parser ap_table_add_addr[] = { 2437 { .type = PF_TA_NBR_ADDED, .off = 0, .cb = snl_attr_get_uint32 }, 2438 }; 2439 SNL_DECLARE_PARSER(table_add_addr_parser, struct genlmsghdr, snl_f_p_empty, ap_table_add_addr); 2440 2441 static int 2442 _pfctl_table_add_addrs_h(struct pfctl_handle *h, struct pfr_table *tbl, struct pfr_addr 2443 *addrs, int size, int *nadd, int flags) 2444 { 2445 struct snl_writer nw; 2446 struct snl_errmsg_data e = {}; 2447 struct nlmsghdr *hdr; 2448 uint32_t seq_id; 2449 uint32_t added; 2450 int family_id; 2451 2452 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME); 2453 if (family_id == 0) 2454 return (ENOTSUP); 2455 2456 snl_init_writer(&h->ss, &nw); 2457 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_TABLE_ADD_ADDR); 2458 2459 snl_add_msg_attr_table(&nw, PF_TA_TABLE, tbl); 2460 snl_add_msg_attr_u32(&nw, PF_TA_FLAGS, flags); 2461 for (int i = 0; i < size; i++) 2462 snl_add_msg_attr_pfr_addr(&nw, PF_TA_ADDR, &addrs[i]); 2463 2464 if ((hdr = snl_finalize_msg(&nw)) == NULL) 2465 return (ENXIO); 2466 seq_id = hdr->nlmsg_seq; 2467 2468 if (! snl_send_message(&h->ss, hdr)) 2469 return (ENXIO); 2470 2471 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) { 2472 if (! snl_parse_nlmsg(&h->ss, hdr, &table_add_addr_parser, &added)) 2473 continue; 2474 } 2475 2476 if (nadd) 2477 *nadd = added; 2478 2479 return (e.error); 2480 } 2481 2482 int 2483 pfctl_table_add_addrs_h(struct pfctl_handle *h, struct pfr_table *tbl, struct pfr_addr 2484 *addr, int size, int *nadd, int flags) 2485 { 2486 int ret; 2487 int off = 0; 2488 int partial_added; 2489 int chunk_size; 2490 2491 do { 2492 chunk_size = MIN(size - off, 256); 2493 ret = _pfctl_table_add_addrs_h(h, tbl, &addr[off], chunk_size, &partial_added, flags); 2494 if (ret != 0) 2495 break; 2496 if (nadd) 2497 *nadd += partial_added; 2498 off += chunk_size; 2499 } while (off < size); 2500 2501 return (ret); 2502 } 2503 2504 static struct snl_attr_parser ap_table_del_addr[] = { 2505 { .type = PF_TA_NBR_DELETED, .off = 0, .cb = snl_attr_get_uint32 }, 2506 }; 2507 SNL_DECLARE_PARSER(table_del_addr_parser, struct genlmsghdr, snl_f_p_empty, ap_table_del_addr); 2508 static int 2509 _pfctl_table_del_addrs_h(struct pfctl_handle *h, struct pfr_table *tbl, struct pfr_addr 2510 *addrs, int size, int *ndel, int flags) 2511 { 2512 struct snl_writer nw; 2513 struct snl_errmsg_data e = {}; 2514 struct nlmsghdr *hdr; 2515 uint32_t seq_id; 2516 uint32_t deleted; 2517 int family_id; 2518 2519 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME); 2520 if (family_id == 0) 2521 return (ENOTSUP); 2522 2523 snl_init_writer(&h->ss, &nw); 2524 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_TABLE_DEL_ADDR); 2525 2526 snl_add_msg_attr_table(&nw, PF_TA_TABLE, tbl); 2527 snl_add_msg_attr_u32(&nw, PF_TA_FLAGS, flags); 2528 for (int i = 0; i < size; i++) 2529 snl_add_msg_attr_pfr_addr(&nw, PF_TA_ADDR, &addrs[i]); 2530 2531 if ((hdr = snl_finalize_msg(&nw)) == NULL) 2532 return (ENXIO); 2533 seq_id = hdr->nlmsg_seq; 2534 2535 if (! snl_send_message(&h->ss, hdr)) 2536 return (ENXIO); 2537 2538 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) { 2539 if (! snl_parse_nlmsg(&h->ss, hdr, &table_del_addr_parser, &deleted)) 2540 continue; 2541 } 2542 2543 if (ndel) 2544 *ndel = deleted; 2545 2546 return (e.error); 2547 } 2548 2549 int 2550 pfctl_table_del_addrs(int dev, struct pfr_table *tbl, struct pfr_addr 2551 *addr, int size, int *ndel, int flags) 2552 { 2553 struct pfioc_table io; 2554 2555 if (tbl == NULL || size < 0 || (size && addr == NULL)) { 2556 return (EINVAL); 2557 } 2558 bzero(&io, sizeof io); 2559 io.pfrio_flags = flags; 2560 io.pfrio_table = *tbl; 2561 io.pfrio_buffer = addr; 2562 io.pfrio_esize = sizeof(*addr); 2563 io.pfrio_size = size; 2564 2565 if (ioctl(dev, DIOCRDELADDRS, &io)) 2566 return (errno); 2567 if (ndel != NULL) 2568 *ndel = io.pfrio_ndel; 2569 return (0); 2570 } 2571 2572 int 2573 pfctl_table_del_addrs_h(struct pfctl_handle *h, struct pfr_table *tbl, struct pfr_addr 2574 *addr, int size, int *ndel, int flags) 2575 { 2576 int ret; 2577 int off = 0; 2578 int partial_deleted; 2579 int chunk_size; 2580 2581 do { 2582 chunk_size = MIN(size - off, 256); 2583 ret = _pfctl_table_del_addrs_h(h, tbl, &addr[off], chunk_size, 2584 &partial_deleted, flags); 2585 if (ret != 0) 2586 break; 2587 if (ndel) 2588 *ndel += partial_deleted; 2589 off += chunk_size; 2590 } while (off < size); 2591 2592 return (ret); 2593 } 2594 2595 int 2596 pfctl_table_set_addrs(int dev, struct pfr_table *tbl, struct pfr_addr 2597 *addr, int size, int *size2, int *nadd, int *ndel, int *nchange, int flags) 2598 { 2599 struct pfioc_table io; 2600 2601 if (tbl == NULL || size < 0 || (size && addr == NULL)) { 2602 return (EINVAL); 2603 } 2604 bzero(&io, sizeof io); 2605 io.pfrio_flags = flags; 2606 io.pfrio_table = *tbl; 2607 io.pfrio_buffer = addr; 2608 io.pfrio_esize = sizeof(*addr); 2609 io.pfrio_size = size; 2610 io.pfrio_size2 = (size2 != NULL) ? *size2 : 0; 2611 if (ioctl(dev, DIOCRSETADDRS, &io)) 2612 return (errno); 2613 if (nadd != NULL) 2614 *nadd = io.pfrio_nadd; 2615 if (ndel != NULL) 2616 *ndel = io.pfrio_ndel; 2617 if (nchange != NULL) 2618 *nchange = io.pfrio_nchange; 2619 if (size2 != NULL) 2620 *size2 = io.pfrio_size2; 2621 return (0); 2622 } 2623 2624 int pfctl_table_get_addrs(int dev, struct pfr_table *tbl, struct pfr_addr *addr, 2625 int *size, int flags) 2626 { 2627 struct pfioc_table io; 2628 2629 if (tbl == NULL || size == NULL || *size < 0 || 2630 (*size && addr == NULL)) { 2631 return (EINVAL); 2632 } 2633 bzero(&io, sizeof io); 2634 io.pfrio_flags = flags; 2635 io.pfrio_table = *tbl; 2636 io.pfrio_buffer = addr; 2637 io.pfrio_esize = sizeof(*addr); 2638 io.pfrio_size = *size; 2639 if (ioctl(dev, DIOCRGETADDRS, &io)) 2640 return (errno); 2641 *size = io.pfrio_size; 2642 return (0); 2643 } 2644 2645 int 2646 pfctl_set_statusif(struct pfctl_handle *h, const char *ifname) 2647 { 2648 struct snl_writer nw; 2649 struct snl_errmsg_data e = {}; 2650 struct nlmsghdr *hdr; 2651 uint32_t seq_id; 2652 int family_id; 2653 2654 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME); 2655 if (family_id == 0) 2656 return (ENOTSUP); 2657 2658 snl_init_writer(&h->ss, &nw); 2659 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_SET_STATUSIF); 2660 2661 snl_add_msg_attr_string(&nw, PF_SS_IFNAME, ifname); 2662 2663 if ((hdr = snl_finalize_msg(&nw)) == NULL) 2664 return (ENXIO); 2665 2666 seq_id = hdr->nlmsg_seq; 2667 2668 if (! snl_send_message(&h->ss, hdr)) 2669 return (ENXIO); 2670 2671 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) { 2672 } 2673 2674 return (e.error); 2675 } 2676 2677 #define _IN(_field) offsetof(struct genlmsghdr, _field) 2678 #define _OUT(_field) offsetof(struct pfctl_natlook, _field) 2679 static struct snl_attr_parser ap_natlook[] = { 2680 { .type = PF_NL_SRC_ADDR, .off = _OUT(saddr), .cb = snl_attr_get_in6_addr }, 2681 { .type = PF_NL_DST_ADDR, .off = _OUT(daddr), .cb = snl_attr_get_in6_addr }, 2682 { .type = PF_NL_SRC_PORT, .off = _OUT(sport), .cb = snl_attr_get_uint16 }, 2683 { .type = PF_NL_DST_PORT, .off = _OUT(dport), .cb = snl_attr_get_uint16 }, 2684 }; 2685 #undef _IN 2686 #undef _OUT 2687 SNL_DECLARE_PARSER(natlook_parser, struct genlmsghdr, snl_f_p_empty, ap_natlook); 2688 2689 int 2690 pfctl_natlook(struct pfctl_handle *h, const struct pfctl_natlook_key *k, 2691 struct pfctl_natlook *r) 2692 { 2693 struct snl_writer nw; 2694 struct snl_errmsg_data e = {}; 2695 struct nlmsghdr *hdr; 2696 uint32_t seq_id; 2697 int family_id; 2698 2699 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME); 2700 if (family_id == 0) 2701 return (ENOTSUP); 2702 2703 snl_init_writer(&h->ss, &nw); 2704 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_NATLOOK); 2705 hdr->nlmsg_flags |= NLM_F_DUMP; 2706 2707 snl_add_msg_attr_u8(&nw, PF_NL_AF, k->af); 2708 snl_add_msg_attr_u8(&nw, PF_NL_DIRECTION, k->direction); 2709 snl_add_msg_attr_u8(&nw, PF_NL_PROTO, k->proto); 2710 snl_add_msg_attr_ip6(&nw, PF_NL_SRC_ADDR, &k->saddr.v6); 2711 snl_add_msg_attr_ip6(&nw, PF_NL_DST_ADDR, &k->daddr.v6); 2712 snl_add_msg_attr_u16(&nw, PF_NL_SRC_PORT, k->sport); 2713 snl_add_msg_attr_u16(&nw, PF_NL_DST_PORT, k->dport); 2714 2715 if ((hdr = snl_finalize_msg(&nw)) == NULL) 2716 return (ENXIO); 2717 2718 seq_id = hdr->nlmsg_seq; 2719 2720 if (! snl_send_message(&h->ss, hdr)) 2721 return (ENXIO); 2722 2723 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) { 2724 if (! snl_parse_nlmsg(&h->ss, hdr, &natlook_parser, r)) 2725 continue; 2726 } 2727 2728 return (e.error); 2729 } 2730 2731 int 2732 pfctl_set_debug(struct pfctl_handle *h, uint32_t level) 2733 { 2734 struct snl_writer nw; 2735 struct snl_errmsg_data e = {}; 2736 struct nlmsghdr *hdr; 2737 uint32_t seq_id; 2738 int family_id; 2739 2740 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME); 2741 if (family_id == 0) 2742 return (ENOTSUP); 2743 2744 snl_init_writer(&h->ss, &nw); 2745 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_SET_DEBUG); 2746 2747 snl_add_msg_attr_u32(&nw, PF_SD_LEVEL, level); 2748 2749 if ((hdr = snl_finalize_msg(&nw)) == NULL) 2750 return (ENXIO); 2751 2752 seq_id = hdr->nlmsg_seq; 2753 2754 if (! snl_send_message(&h->ss, hdr)) 2755 return (ENXIO); 2756 2757 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) { 2758 } 2759 2760 return (e.error); 2761 } 2762 2763 int 2764 pfctl_set_timeout(struct pfctl_handle *h, uint32_t timeout, uint32_t seconds) 2765 { 2766 struct snl_writer nw; 2767 struct snl_errmsg_data e = {}; 2768 struct nlmsghdr *hdr; 2769 uint32_t seq_id; 2770 int family_id; 2771 2772 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME); 2773 if (family_id == 0) 2774 return (ENOTSUP); 2775 2776 snl_init_writer(&h->ss, &nw); 2777 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_SET_TIMEOUT); 2778 2779 snl_add_msg_attr_u32(&nw, PF_TO_TIMEOUT, timeout); 2780 snl_add_msg_attr_u32(&nw, PF_TO_SECONDS, seconds); 2781 2782 if ((hdr = snl_finalize_msg(&nw)) == NULL) 2783 return (ENXIO); 2784 2785 seq_id = hdr->nlmsg_seq; 2786 2787 if (! snl_send_message(&h->ss, hdr)) 2788 return (ENXIO); 2789 2790 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) { 2791 } 2792 2793 return (e.error); 2794 } 2795 2796 struct pfctl_nl_timeout { 2797 uint32_t seconds; 2798 }; 2799 #define _OUT(_field) offsetof(struct pfctl_nl_timeout, _field) 2800 static struct snl_attr_parser ap_get_timeout[] = { 2801 { .type = PF_TO_SECONDS, .off = _OUT(seconds), .cb = snl_attr_get_uint32 }, 2802 }; 2803 #undef _OUT 2804 SNL_DECLARE_PARSER(get_timeout_parser, struct genlmsghdr, snl_f_p_empty, ap_get_timeout); 2805 2806 int 2807 pfctl_get_timeout(struct pfctl_handle *h, uint32_t timeout, uint32_t *seconds) 2808 { 2809 struct snl_writer nw; 2810 struct pfctl_nl_timeout to = {}; 2811 struct snl_errmsg_data e = {}; 2812 struct nlmsghdr *hdr; 2813 uint32_t seq_id; 2814 int family_id; 2815 2816 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME); 2817 if (family_id == 0) 2818 return (ENOTSUP); 2819 2820 snl_init_writer(&h->ss, &nw); 2821 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GET_TIMEOUT); 2822 hdr->nlmsg_flags |= NLM_F_DUMP; 2823 2824 snl_add_msg_attr_u32(&nw, PF_TO_TIMEOUT, timeout); 2825 2826 if ((hdr = snl_finalize_msg(&nw)) == NULL) 2827 return (ENXIO); 2828 2829 seq_id = hdr->nlmsg_seq; 2830 2831 if (! snl_send_message(&h->ss, hdr)) 2832 return (ENXIO); 2833 2834 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) { 2835 if (! snl_parse_nlmsg(&h->ss, hdr, &get_timeout_parser, &to)) 2836 continue; 2837 } 2838 2839 if (seconds != NULL) 2840 *seconds = to.seconds; 2841 2842 return (e.error); 2843 } 2844 2845 int 2846 pfctl_set_limit(struct pfctl_handle *h, const int index, const uint limit) 2847 { 2848 struct snl_writer nw; 2849 struct snl_errmsg_data e = {}; 2850 struct nlmsghdr *hdr; 2851 uint32_t seq_id; 2852 int family_id; 2853 2854 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME); 2855 if (family_id == 0) 2856 return (ENOTSUP); 2857 2858 snl_init_writer(&h->ss, &nw); 2859 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_SET_LIMIT); 2860 2861 snl_add_msg_attr_u32(&nw, PF_LI_INDEX, index); 2862 snl_add_msg_attr_u32(&nw, PF_LI_LIMIT, limit); 2863 2864 if ((hdr = snl_finalize_msg(&nw)) == NULL) 2865 return (ENXIO); 2866 2867 seq_id = hdr->nlmsg_seq; 2868 2869 if (! snl_send_message(&h->ss, hdr)) 2870 return (ENXIO); 2871 2872 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) { 2873 } 2874 2875 return (e.error); 2876 } 2877 2878 struct pfctl_nl_limit { 2879 unsigned int limit; 2880 }; 2881 #define _OUT(_field) offsetof(struct pfctl_nl_limit, _field) 2882 static struct snl_attr_parser ap_get_limit[] = { 2883 { .type = PF_LI_LIMIT, .off = _OUT(limit), .cb = snl_attr_get_uint32 }, 2884 }; 2885 #undef _OUT 2886 SNL_DECLARE_PARSER(get_limit_parser, struct genlmsghdr, snl_f_p_empty, ap_get_limit); 2887 2888 int 2889 pfctl_get_limit(struct pfctl_handle *h, const int index, uint *limit) 2890 { 2891 struct snl_writer nw; 2892 struct pfctl_nl_limit li = {}; 2893 struct snl_errmsg_data e = {}; 2894 struct nlmsghdr *hdr; 2895 uint32_t seq_id; 2896 int family_id; 2897 2898 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME); 2899 if (family_id == 0) 2900 return (ENOTSUP); 2901 2902 snl_init_writer(&h->ss, &nw); 2903 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GET_LIMIT); 2904 hdr->nlmsg_flags |= NLM_F_DUMP; 2905 2906 snl_add_msg_attr_u32(&nw, PF_LI_INDEX, index); 2907 2908 if ((hdr = snl_finalize_msg(&nw)) == NULL) 2909 return (ENXIO); 2910 2911 seq_id = hdr->nlmsg_seq; 2912 2913 if (! snl_send_message(&h->ss, hdr)) 2914 return (ENXIO); 2915 2916 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) { 2917 if (! snl_parse_nlmsg(&h->ss, hdr, &get_limit_parser, &li)) 2918 continue; 2919 } 2920 2921 if (limit != NULL) 2922 *limit = li.limit; 2923 2924 return (e.error); 2925 } 2926 2927 struct pfctl_nl_begin_addrs { 2928 uint32_t ticket; 2929 }; 2930 #define _OUT(_field) offsetof(struct pfctl_nl_begin_addrs, _field) 2931 static struct snl_attr_parser ap_begin_addrs[] = { 2932 { .type = PF_BA_TICKET, .off = _OUT(ticket), .cb = snl_attr_get_uint32 }, 2933 }; 2934 #undef _OUT 2935 SNL_DECLARE_PARSER(begin_addrs_parser, struct genlmsghdr, snl_f_p_empty, ap_begin_addrs); 2936 2937 int 2938 pfctl_begin_addrs(struct pfctl_handle *h, uint32_t *ticket) 2939 { 2940 struct snl_writer nw; 2941 struct pfctl_nl_begin_addrs attrs = {}; 2942 struct snl_errmsg_data e = {}; 2943 struct nlmsghdr *hdr; 2944 uint32_t seq_id; 2945 int family_id; 2946 2947 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME); 2948 if (family_id == 0) 2949 return (ENOTSUP); 2950 2951 snl_init_writer(&h->ss, &nw); 2952 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_BEGIN_ADDRS); 2953 hdr->nlmsg_flags |= NLM_F_DUMP; 2954 2955 if ((hdr = snl_finalize_msg(&nw)) == NULL) 2956 return (ENXIO); 2957 2958 seq_id = hdr->nlmsg_seq; 2959 2960 if (! snl_send_message(&h->ss, hdr)) 2961 return (ENXIO); 2962 2963 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) { 2964 if (! snl_parse_nlmsg(&h->ss, hdr, &begin_addrs_parser, &attrs)) 2965 continue; 2966 } 2967 2968 if (ticket != NULL) 2969 *ticket = attrs.ticket; 2970 2971 return (e.error); 2972 } 2973 2974 int 2975 pfctl_add_addr(struct pfctl_handle *h, const struct pfioc_pooladdr *pa, int which) 2976 { 2977 struct snl_writer nw; 2978 struct snl_errmsg_data e = {}; 2979 struct nlmsghdr *hdr; 2980 uint32_t seq_id; 2981 int family_id; 2982 2983 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME); 2984 if (family_id == 0) 2985 return (ENOTSUP); 2986 2987 snl_init_writer(&h->ss, &nw); 2988 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_ADD_ADDR); 2989 2990 snl_add_msg_attr_u32(&nw, PF_AA_ACTION, pa->action); 2991 snl_add_msg_attr_u32(&nw, PF_AA_TICKET, pa->ticket); 2992 snl_add_msg_attr_u32(&nw, PF_AA_NR, pa->nr); 2993 snl_add_msg_attr_u32(&nw, PF_AA_R_NUM, pa->r_num); 2994 snl_add_msg_attr_u8(&nw, PF_AA_R_ACTION, pa->r_action); 2995 snl_add_msg_attr_u8(&nw, PF_AA_R_LAST, pa->r_last); 2996 snl_add_msg_attr_u8(&nw, PF_AA_AF, pa->af); 2997 snl_add_msg_attr_string(&nw, PF_AA_ANCHOR, pa->anchor); 2998 snl_add_msg_attr_pool_addr(&nw, PF_AA_ADDR, &pa->addr); 2999 snl_add_msg_attr_u32(&nw, PF_AA_WHICH, which); 3000 3001 if ((hdr = snl_finalize_msg(&nw)) == NULL) 3002 return (ENXIO); 3003 3004 seq_id = hdr->nlmsg_seq; 3005 3006 if (! snl_send_message(&h->ss, hdr)) 3007 return (ENXIO); 3008 3009 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) { 3010 } 3011 3012 return (e.error); 3013 } 3014 3015 static const struct snl_attr_parser ap_get_addrs[] = { 3016 { .type = PF_AA_NR, .off = 0, .cb = snl_attr_get_uint32 }, 3017 }; 3018 SNL_DECLARE_PARSER(get_addrs_parser, struct genlmsghdr, snl_f_p_empty, ap_get_addrs); 3019 3020 int 3021 pfctl_get_addrs(struct pfctl_handle *h, uint32_t ticket, uint32_t r_num, 3022 uint8_t r_action, const char *anchor, uint32_t *nr, int which) 3023 { 3024 struct snl_writer nw; 3025 struct snl_errmsg_data e = {}; 3026 struct nlmsghdr *hdr; 3027 uint32_t seq_id; 3028 int family_id; 3029 3030 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME); 3031 if (family_id == 0) 3032 return (ENOTSUP); 3033 3034 snl_init_writer(&h->ss, &nw); 3035 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GET_ADDRS); 3036 3037 snl_add_msg_attr_u32(&nw, PF_AA_TICKET, ticket); 3038 snl_add_msg_attr_u32(&nw, PF_AA_R_NUM, r_num); 3039 snl_add_msg_attr_u8(&nw, PF_AA_R_ACTION, r_action); 3040 snl_add_msg_attr_string(&nw, PF_AA_ANCHOR, anchor); 3041 snl_add_msg_attr_u32(&nw, PF_AA_WHICH, which); 3042 3043 if ((hdr = snl_finalize_msg(&nw)) == NULL) 3044 return (ENXIO); 3045 3046 seq_id = hdr->nlmsg_seq; 3047 3048 if (! snl_send_message(&h->ss, hdr)) 3049 return (ENXIO); 3050 3051 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) { 3052 if (! snl_parse_nlmsg(&h->ss, hdr, &get_addrs_parser, nr)) 3053 continue; 3054 } 3055 3056 return (e.error); 3057 } 3058 3059 #define _OUT(_field) offsetof(struct pf_pooladdr, _field) 3060 static const struct snl_attr_parser ap_pool_addr[] = { 3061 { .type = PF_PA_ADDR, .off = _OUT(addr), .arg = &addr_wrap_parser, .cb = snl_attr_get_nested }, 3062 { .type = PF_PA_IFNAME, .off = _OUT(ifname), .arg_u32 = IFNAMSIZ, .cb = snl_attr_copy_string }, 3063 }; 3064 SNL_DECLARE_ATTR_PARSER(pool_addr_parser, ap_pool_addr); 3065 #undef _OUT 3066 3067 #define _OUT(_field) offsetof(struct pfioc_pooladdr, _field) 3068 static const struct snl_attr_parser ap_get_addr[] = { 3069 { .type = PF_AA_ACTION, .off = _OUT(action), .cb = snl_attr_get_uint32 }, 3070 { .type = PF_AA_TICKET, .off = _OUT(ticket), .cb = snl_attr_get_uint32 }, 3071 { .type = PF_AA_NR, .off = _OUT(nr), .cb = snl_attr_get_uint32 }, 3072 { .type = PF_AA_R_NUM, .off = _OUT(r_num), .cb = snl_attr_get_uint32 }, 3073 { .type = PF_AA_R_ACTION, .off = _OUT(r_action), .cb = snl_attr_get_uint8 }, 3074 { .type = PF_AA_R_LAST, .off = _OUT(r_last), .cb = snl_attr_get_uint8 }, 3075 { .type = PF_AA_AF, .off = _OUT(af), .cb = snl_attr_get_uint8 }, 3076 { .type = PF_AA_ANCHOR, .off = _OUT(anchor), .arg_u32 = MAXPATHLEN, .cb = snl_attr_copy_string }, 3077 { .type = PF_AA_ADDR, .off = _OUT(addr), .arg = &pool_addr_parser, .cb = snl_attr_get_nested }, 3078 }; 3079 SNL_DECLARE_PARSER(get_addr_parser, struct genlmsghdr, snl_f_p_empty, ap_get_addr); 3080 #undef _OUT 3081 3082 int 3083 pfctl_get_addr(struct pfctl_handle *h, uint32_t ticket, uint32_t r_num, 3084 uint8_t r_action, const char *anchor, uint32_t nr, struct pfioc_pooladdr *pa, 3085 int which) 3086 { 3087 struct snl_writer nw; 3088 struct snl_errmsg_data e = {}; 3089 struct nlmsghdr *hdr; 3090 uint32_t seq_id; 3091 int family_id; 3092 3093 family_id =snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME); 3094 if (family_id == 0) 3095 return (ENOTSUP); 3096 3097 snl_init_writer(&h->ss, &nw); 3098 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GET_ADDR); 3099 3100 snl_add_msg_attr_u32(&nw, PF_AA_TICKET, ticket); 3101 snl_add_msg_attr_u32(&nw, PF_AA_R_NUM, r_num); 3102 snl_add_msg_attr_u8(&nw, PF_AA_R_ACTION, r_action); 3103 snl_add_msg_attr_string(&nw, PF_AA_ANCHOR, anchor); 3104 snl_add_msg_attr_u32(&nw, PF_AA_NR, nr); 3105 snl_add_msg_attr_u32(&nw, PF_AA_WHICH, which); 3106 3107 if ((hdr = snl_finalize_msg(&nw)) == NULL) 3108 return (ENXIO); 3109 3110 seq_id = hdr->nlmsg_seq; 3111 3112 if (! snl_send_message(&h->ss, hdr)) 3113 return (ENXIO); 3114 3115 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) { 3116 if (! snl_parse_nlmsg(&h->ss, hdr, &get_addr_parser, pa)) 3117 continue; 3118 } 3119 3120 return (e.error); 3121 } 3122 3123 #define _OUT(_field) offsetof(struct pfioc_ruleset, _field) 3124 static const struct snl_attr_parser ap_ruleset[] = { 3125 { .type = PF_RS_NR, .off = _OUT(nr), .cb = snl_attr_get_uint32 }, 3126 { .type = PF_RS_NAME, .off = _OUT(name), .arg = (void *)PF_ANCHOR_NAME_SIZE, .cb = snl_attr_copy_string }, 3127 }; 3128 SNL_DECLARE_PARSER(ruleset_parser, struct genlmsghdr, snl_f_p_empty, ap_ruleset); 3129 #undef _OUT 3130 3131 int 3132 pfctl_get_rulesets(struct pfctl_handle *h, const char *path, uint32_t *nr) 3133 { 3134 struct snl_writer nw; 3135 struct snl_errmsg_data e = {}; 3136 struct nlmsghdr *hdr; 3137 struct pfioc_ruleset rs = {}; 3138 uint32_t seq_id; 3139 int family_id; 3140 3141 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME); 3142 if (family_id == 0) 3143 return (ENOTSUP); 3144 3145 snl_init_writer(&h->ss, &nw); 3146 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GET_RULESETS); 3147 3148 snl_add_msg_attr_string(&nw, PF_RS_PATH, path); 3149 3150 if ((hdr = snl_finalize_msg(&nw)) == NULL) 3151 return (ENXIO); 3152 3153 seq_id = hdr->nlmsg_seq; 3154 3155 if (! snl_send_message(&h->ss, hdr)) 3156 return (ENXIO); 3157 3158 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) { 3159 if (! snl_parse_nlmsg(&h->ss, hdr, &ruleset_parser, &rs)) 3160 continue; 3161 } 3162 3163 *nr = rs.nr; 3164 3165 return (e.error); 3166 } 3167 3168 int 3169 pfctl_get_ruleset(struct pfctl_handle *h, const char *path, uint32_t nr, struct pfioc_ruleset *rs) 3170 { 3171 struct snl_writer nw; 3172 struct snl_errmsg_data e = {}; 3173 struct nlmsghdr *hdr; 3174 uint32_t seq_id; 3175 int family_id; 3176 3177 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME); 3178 if (family_id == 0) 3179 return (ENOTSUP); 3180 3181 snl_init_writer(&h->ss, &nw); 3182 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GET_RULESET); 3183 3184 snl_add_msg_attr_string(&nw, PF_RS_PATH, path); 3185 snl_add_msg_attr_u32(&nw, PF_RS_NR, nr); 3186 3187 if ((hdr = snl_finalize_msg(&nw)) == NULL) 3188 return (ENXIO); 3189 3190 seq_id = hdr->nlmsg_seq; 3191 3192 if (! snl_send_message(&h->ss, hdr)) 3193 return (ENXIO); 3194 3195 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) { 3196 if (! snl_parse_nlmsg(&h->ss, hdr, &ruleset_parser, rs)) 3197 continue; 3198 } 3199 3200 return (e.error); 3201 } 3202 3203 #define _OUT(_field) offsetof(struct pfctl_src_node, _field) 3204 static struct snl_attr_parser ap_srcnode[] = { 3205 { .type = PF_SN_ADDR, .off = _OUT(addr), .cb = snl_attr_get_in6_addr }, 3206 { .type = PF_SN_RADDR, .off = _OUT(raddr), .cb = snl_attr_get_in6_addr }, 3207 { .type = PF_SN_RULE_NR, .off = _OUT(rule), .cb = snl_attr_get_uint32 }, 3208 { .type = PF_SN_BYTES_IN, .off = _OUT(bytes[0]), .cb = snl_attr_get_uint64 }, 3209 { .type = PF_SN_BYTES_OUT, .off = _OUT(bytes[1]), .cb = snl_attr_get_uint64 }, 3210 { .type = PF_SN_PACKETS_IN, .off = _OUT(packets[0]), .cb = snl_attr_get_uint64 }, 3211 { .type = PF_SN_PACKETS_OUT, .off = _OUT(packets[1]), .cb = snl_attr_get_uint64 }, 3212 { .type = PF_SN_STATES, .off = _OUT(states), .cb = snl_attr_get_uint32 }, 3213 { .type = PF_SN_CONNECTIONS, .off = _OUT(conn), .cb = snl_attr_get_uint32 }, 3214 { .type = PF_SN_AF, .off = _OUT(af), .cb = snl_attr_get_uint8 }, 3215 { .type = PF_SN_RULE_TYPE, .off = _OUT(ruletype), .cb = snl_attr_get_uint8 }, 3216 { .type = PF_SN_CREATION, .off = _OUT(creation), .cb = snl_attr_get_uint64 }, 3217 { .type = PF_SN_EXPIRE, .off = _OUT(expire), .cb = snl_attr_get_uint64 }, 3218 { .type = PF_SN_CONNECTION_RATE, .off = _OUT(conn_rate), .arg = &pfctl_threshold_parser, .cb = snl_attr_get_nested }, 3219 { .type = PF_SN_RAF, .off = _OUT(raf), .cb = snl_attr_get_uint8 }, 3220 { .type = PF_SN_NODE_TYPE, .off = _OUT(type), .cb = snl_attr_get_uint8 }, 3221 }; 3222 #undef _OUT 3223 SNL_DECLARE_PARSER(srcnode_parser, struct genlmsghdr, snl_f_p_empty, ap_srcnode); 3224 3225 int 3226 pfctl_get_srcnodes(struct pfctl_handle *h, pfctl_get_srcnode_fn fn, void *arg) 3227 { 3228 struct snl_writer nw; 3229 struct pfctl_src_node sn; 3230 struct snl_errmsg_data e = {}; 3231 struct nlmsghdr *hdr; 3232 uint32_t seq_id; 3233 int family_id; 3234 int ret; 3235 3236 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME); 3237 if (family_id == 0) 3238 return (ENOTSUP); 3239 3240 snl_init_writer(&h->ss, &nw); 3241 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GET_SRCNODES); 3242 3243 if ((hdr = snl_finalize_msg(&nw)) == NULL) 3244 return (ENXIO); 3245 3246 seq_id = hdr->nlmsg_seq; 3247 3248 if (!snl_send_message(&h->ss, hdr)) 3249 return (ENXIO); 3250 3251 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) { 3252 bzero(&sn, sizeof(sn)); 3253 if (!snl_parse_nlmsg(&h->ss, hdr, &srcnode_parser, &sn)) 3254 continue; 3255 3256 ret = fn(&sn, arg); 3257 if (ret != 0) 3258 return (ret); 3259 } 3260 3261 return (e.error); 3262 } 3263 3264 static struct snl_attr_parser ap_ndel[] = { 3265 { .type = PF_T_NBR_DELETED, .off = 0, .cb = snl_attr_get_uint32 }, 3266 }; 3267 SNL_DECLARE_PARSER(ndel_parser, struct genlmsghdr, snl_f_p_empty, ap_ndel); 3268 3269 int 3270 pfctl_clear_tables(struct pfctl_handle *h, struct pfr_table *filter, 3271 int *ndel, int flags) 3272 { 3273 struct snl_writer nw; 3274 struct snl_errmsg_data e = {}; 3275 struct nlmsghdr *hdr; 3276 uint32_t seq_id; 3277 int family_id; 3278 3279 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME); 3280 if (family_id == 0) 3281 return (ENOTSUP); 3282 3283 snl_init_writer(&h->ss, &nw); 3284 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_CLEAR_TABLES); 3285 3286 snl_add_msg_attr_string(&nw, PF_T_ANCHOR, filter->pfrt_anchor); 3287 snl_add_msg_attr_string(&nw, PF_T_NAME, filter->pfrt_name); 3288 snl_add_msg_attr_u32(&nw, PF_T_TABLE_FLAGS, filter->pfrt_flags); 3289 snl_add_msg_attr_u32(&nw, PF_T_FLAGS, flags); 3290 3291 if ((hdr = snl_finalize_msg(&nw)) == NULL) 3292 return (ENXIO); 3293 3294 seq_id = hdr->nlmsg_seq; 3295 3296 if (!snl_send_message(&h->ss, hdr)) 3297 return (ENXIO); 3298 3299 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) { 3300 if (!snl_parse_nlmsg(&h->ss, hdr, &ndel_parser, ndel)) 3301 continue; 3302 } 3303 3304 return (e.error); 3305 } 3306 3307 static struct snl_attr_parser ap_nadd[] = { 3308 { .type = PF_T_NBR_ADDED, .off = 0, .cb = snl_attr_get_uint32 }, 3309 }; 3310 SNL_DECLARE_PARSER(nadd_parser, struct genlmsghdr, snl_f_p_empty, ap_nadd); 3311 int 3312 pfctl_add_table(struct pfctl_handle *h, struct pfr_table *table, 3313 int *nadd, int flags) 3314 { 3315 struct snl_writer nw; 3316 struct snl_errmsg_data e = {}; 3317 struct nlmsghdr *hdr; 3318 uint32_t seq_id; 3319 int family_id; 3320 3321 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME); 3322 if (family_id == 0) 3323 return (ENOTSUP); 3324 3325 snl_init_writer(&h->ss, &nw); 3326 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_ADD_TABLE); 3327 3328 snl_add_msg_attr_string(&nw, PF_T_ANCHOR, table->pfrt_anchor); 3329 snl_add_msg_attr_string(&nw, PF_T_NAME, table->pfrt_name); 3330 snl_add_msg_attr_u32(&nw, PF_T_TABLE_FLAGS, table->pfrt_flags); 3331 snl_add_msg_attr_u32(&nw, PF_T_FLAGS, flags); 3332 3333 if ((hdr = snl_finalize_msg(&nw)) == NULL) 3334 return (ENXIO); 3335 3336 seq_id = hdr->nlmsg_seq; 3337 3338 if (!snl_send_message(&h->ss, hdr)) 3339 return (ENXIO); 3340 3341 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) { 3342 if (!snl_parse_nlmsg(&h->ss, hdr, &nadd_parser, nadd)) 3343 continue; 3344 } 3345 3346 return (e.error); 3347 } 3348 3349 int 3350 pfctl_del_table(struct pfctl_handle *h, struct pfr_table *table, 3351 int *ndel, int flags) 3352 { 3353 struct snl_writer nw; 3354 struct snl_errmsg_data e = {}; 3355 struct nlmsghdr *hdr; 3356 uint32_t seq_id; 3357 int family_id; 3358 3359 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME); 3360 if (family_id == 0) 3361 return (ENOTSUP); 3362 3363 snl_init_writer(&h->ss, &nw); 3364 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_DEL_TABLE); 3365 3366 snl_add_msg_attr_string(&nw, PF_T_ANCHOR, table->pfrt_anchor); 3367 snl_add_msg_attr_string(&nw, PF_T_NAME, table->pfrt_name); 3368 snl_add_msg_attr_u32(&nw, PF_T_TABLE_FLAGS, table->pfrt_flags); 3369 snl_add_msg_attr_u32(&nw, PF_T_FLAGS, flags); 3370 3371 if ((hdr = snl_finalize_msg(&nw)) == NULL) 3372 return (ENXIO); 3373 3374 seq_id = hdr->nlmsg_seq; 3375 3376 if (!snl_send_message(&h->ss, hdr)) 3377 return (ENXIO); 3378 3379 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) { 3380 if (!snl_parse_nlmsg(&h->ss, hdr, &ndel_parser, ndel)) 3381 continue; 3382 } 3383 3384 return (e.error); 3385 } 3386 3387 static bool 3388 snl_attr_get_uint64_into_int_array(struct snl_state *ss, struct nlattr *nla, 3389 const void *arg, void *target) 3390 { 3391 uint64_t *u64target; 3392 struct snl_uint64_array a = { 3393 .count = 0, 3394 .max = (size_t)arg, 3395 }; 3396 bool error; 3397 3398 u64target = malloc(a.max * sizeof(uint64_t)); 3399 a.array = u64target; 3400 3401 error = snl_parse_header(ss, NLA_DATA(nla), NLA_DATA_LEN(nla), &array_parser, &a); 3402 if (! error) 3403 return (error); 3404 3405 for (size_t i = 0; i < a.count; i++) 3406 ((int *)target)[i] = (int)u64target[i]; 3407 3408 free(u64target); 3409 3410 return (true); 3411 } 3412 3413 #define _OUT(_field) offsetof(struct pfr_table, _field) 3414 static const struct snl_attr_parser ap_table[] = { 3415 { .type = PF_T_ANCHOR, .off = _OUT(pfrt_anchor), .arg = (void *)MAXPATHLEN, .cb = snl_attr_copy_string }, 3416 { .type = PF_T_NAME, .off = _OUT(pfrt_name), .arg = (void *)PF_TABLE_NAME_SIZE, .cb =snl_attr_copy_string }, 3417 { .type = PF_T_TABLE_FLAGS, .off = _OUT(pfrt_flags), .cb = snl_attr_get_uint32 }, 3418 }; 3419 #undef _OUT 3420 SNL_DECLARE_ATTR_PARSER(table_parser, ap_table); 3421 #define _OUT(_field) offsetof(struct pfr_tstats, _field) 3422 static struct snl_attr_parser ap_tstats[] = { 3423 { .type = PF_TS_TABLE, .off = _OUT(pfrts_t), .arg = &table_parser, .cb = snl_attr_get_nested }, 3424 { .type = PF_TS_PACKETS, .off = _OUT(pfrts_packets), .arg = (void *)(PFR_DIR_MAX * PFR_OP_TABLE_MAX), .cb = snl_attr_get_uint64_array}, 3425 { .type = PF_TS_BYTES, .off = _OUT(pfrts_bytes), .arg = (void *)(PFR_DIR_MAX * PFR_OP_TABLE_MAX), .cb = snl_attr_get_uint64_array }, 3426 { .type = PF_TS_MATCH, .off = _OUT(pfrts_match), .cb = snl_attr_get_uint64 }, 3427 {. type = PF_TS_NOMATCH, .off = _OUT(pfrts_nomatch), .cb = snl_attr_get_uint64 }, 3428 { .type = PF_TS_TZERO, .off = _OUT(pfrts_tzero), .cb = snl_attr_get_uint64 }, 3429 { .type = PF_TS_REFCNT, .off = _OUT(pfrts_cnt), . arg = (void *)PFR_REFCNT_MAX, .cb = snl_attr_get_uint64_into_int_array }, 3430 }; 3431 #undef _OUT 3432 SNL_DECLARE_PARSER(tstats_parser, struct genlmsghdr, snl_f_p_empty, ap_tstats); 3433 3434 int 3435 pfctl_get_tstats(struct pfctl_handle *h, const struct pfr_table *filter, 3436 pfctl_get_tstats_fn fn, void *arg) 3437 { 3438 struct snl_writer nw; 3439 struct snl_errmsg_data e = {}; 3440 struct nlmsghdr *hdr; 3441 uint32_t seq_id; 3442 int family_id; 3443 int ret; 3444 3445 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME); 3446 if (family_id == 0) 3447 return (ENOTSUP); 3448 3449 snl_init_writer(&h->ss, &nw); 3450 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GET_TSTATS); 3451 3452 snl_add_msg_attr_string(&nw, PF_T_ANCHOR, filter->pfrt_anchor); 3453 snl_add_msg_attr_string(&nw, PF_T_NAME, filter->pfrt_name); 3454 snl_add_msg_attr_u32(&nw, PF_T_TABLE_FLAGS, filter->pfrt_flags); 3455 3456 if ((hdr = snl_finalize_msg(&nw)) == NULL) 3457 return (ENXIO); 3458 3459 seq_id = hdr->nlmsg_seq; 3460 3461 if (!snl_send_message(&h->ss, hdr)) 3462 return (ENXIO); 3463 3464 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) { 3465 struct pfr_tstats tstats = {}; 3466 3467 if (!snl_parse_nlmsg(&h->ss, hdr, &tstats_parser, &tstats)) 3468 continue; 3469 3470 ret = fn(&tstats, arg); 3471 if (ret != 0) 3472 break; 3473 } 3474 3475 return (e.error); 3476 } 3477 3478 static struct snl_attr_parser ap_tstats_clr[] = { 3479 { .type = PF_TS_NZERO, .off = 0, .cb = snl_attr_get_uint64 }, 3480 }; 3481 SNL_DECLARE_PARSER(tstats_clr_parser, struct genlmsghdr, snl_f_p_empty, ap_tstats_clr); 3482 3483 int 3484 pfctl_clear_tstats(struct pfctl_handle *h, const struct pfr_table *filter, 3485 int *nzero, int flags) 3486 { 3487 struct snl_writer nw; 3488 struct snl_errmsg_data e = {}; 3489 struct nlmsghdr *hdr; 3490 uint64_t zero; 3491 uint32_t seq_id; 3492 int family_id; 3493 3494 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME); 3495 if (family_id == 0) 3496 return (ENOTSUP); 3497 3498 snl_init_writer(&h->ss, &nw); 3499 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_CLR_TSTATS); 3500 3501 snl_add_msg_attr_string(&nw, PF_T_ANCHOR, filter->pfrt_anchor); 3502 snl_add_msg_attr_string(&nw, PF_T_NAME, filter->pfrt_name); 3503 snl_add_msg_attr_u32(&nw, PF_T_TABLE_FLAGS, filter->pfrt_flags); 3504 snl_add_msg_attr_u32(&nw, PF_T_FLAGS, flags); 3505 3506 if ((hdr = snl_finalize_msg(&nw)) == NULL) 3507 return (ENXIO); 3508 3509 seq_id = hdr->nlmsg_seq; 3510 3511 if (!snl_send_message(&h->ss, hdr)) 3512 return (ENXIO); 3513 3514 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) { 3515 if (!snl_parse_nlmsg(&h->ss, hdr, &tstats_clr_parser, &zero)) 3516 continue; 3517 if (nzero) 3518 *nzero = (uint32_t)zero; 3519 } 3520 3521 return (e.error); 3522 } 3523 3524 static struct snl_attr_parser ap_clr_addrs[] = { 3525 { .type = PF_T_NBR_DELETED, .off = 0, .cb = snl_attr_get_uint64 }, 3526 }; 3527 SNL_DECLARE_PARSER(clr_addrs_parser, struct genlmsghdr, snl_f_p_empty, ap_clr_addrs); 3528 3529 int 3530 pfctl_clear_addrs(struct pfctl_handle *h, const struct pfr_table *filter, 3531 int *ndel, int flags) 3532 { 3533 struct snl_writer nw; 3534 struct snl_errmsg_data e = {}; 3535 struct nlmsghdr *hdr; 3536 uint64_t del; 3537 uint32_t seq_id; 3538 int family_id; 3539 3540 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME); 3541 if (family_id == 0) 3542 return (ENOTSUP); 3543 3544 snl_init_writer(&h->ss, &nw); 3545 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_CLR_ADDRS); 3546 3547 snl_add_msg_attr_string(&nw, PF_T_ANCHOR, filter->pfrt_anchor); 3548 snl_add_msg_attr_string(&nw, PF_T_NAME, filter->pfrt_name); 3549 snl_add_msg_attr_u32(&nw, PF_T_TABLE_FLAGS, filter->pfrt_flags); 3550 snl_add_msg_attr_u32(&nw, PF_T_FLAGS, flags); 3551 3552 if ((hdr = snl_finalize_msg(&nw)) == NULL) 3553 return (ENXIO); 3554 3555 seq_id = hdr->nlmsg_seq; 3556 3557 if (!snl_send_message(&h->ss, hdr)) 3558 return (ENXIO); 3559 3560 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) { 3561 if (!snl_parse_nlmsg(&h->ss, hdr, &clr_addrs_parser, &del)) 3562 continue; 3563 if (ndel) 3564 *ndel = (uint32_t)del; 3565 } 3566 3567 return (e.error); 3568 } 3569 3570