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 * $FreeBSD$ 32 */ 33 34 #include <sys/cdefs.h> 35 36 #include <sys/ioctl.h> 37 #include <sys/nv.h> 38 #include <sys/queue.h> 39 #include <sys/types.h> 40 41 #include <net/if.h> 42 #include <net/pfvar.h> 43 #include <netinet/in.h> 44 45 #include <assert.h> 46 #include <err.h> 47 #include <errno.h> 48 #include <stdlib.h> 49 #include <string.h> 50 51 #include "libpfctl.h" 52 53 const char* PFCTL_SYNCOOKIES_MODE_NAMES[] = { 54 "never", 55 "always", 56 "adaptive" 57 }; 58 59 static int _pfctl_clear_states(int , const struct pfctl_kill *, 60 unsigned int *, uint64_t); 61 62 static void 63 pf_nvuint_8_array(const nvlist_t *nvl, const char *name, size_t maxelems, 64 uint8_t *numbers, size_t *nelems) 65 { 66 const uint64_t *tmp; 67 size_t elems; 68 69 tmp = nvlist_get_number_array(nvl, name, &elems); 70 assert(elems <= maxelems); 71 72 for (size_t i = 0; i < elems; i++) 73 numbers[i] = tmp[i]; 74 75 if (nelems) 76 *nelems = elems; 77 } 78 79 static void 80 pf_nvuint_16_array(const nvlist_t *nvl, const char *name, size_t maxelems, 81 uint16_t *numbers, size_t *nelems) 82 { 83 const uint64_t *tmp; 84 size_t elems; 85 86 tmp = nvlist_get_number_array(nvl, name, &elems); 87 assert(elems <= maxelems); 88 89 for (size_t i = 0; i < elems; i++) 90 numbers[i] = tmp[i]; 91 92 if (nelems) 93 *nelems = elems; 94 } 95 96 static void 97 pf_nvuint_32_array(const nvlist_t *nvl, const char *name, size_t maxelems, 98 uint32_t *numbers, size_t *nelems) 99 { 100 const uint64_t *tmp; 101 size_t elems; 102 103 tmp = nvlist_get_number_array(nvl, name, &elems); 104 assert(elems <= maxelems); 105 106 for (size_t i = 0; i < elems; i++) 107 numbers[i] = tmp[i]; 108 109 if (nelems) 110 *nelems = elems; 111 } 112 113 static void 114 pf_nvuint_64_array(const nvlist_t *nvl, const char *name, size_t maxelems, 115 uint64_t *numbers, size_t *nelems) 116 { 117 const uint64_t *tmp; 118 size_t elems; 119 120 tmp = nvlist_get_number_array(nvl, name, &elems); 121 assert(elems <= maxelems); 122 123 for (size_t i = 0; i < elems; i++) 124 numbers[i] = tmp[i]; 125 126 if (nelems) 127 *nelems = elems; 128 } 129 130 static void 131 _pfctl_get_status_counters(const nvlist_t *nvl, 132 struct pfctl_status_counters *counters) 133 { 134 const uint64_t *ids, *counts; 135 const char *const *names; 136 size_t id_len, counter_len, names_len; 137 138 ids = nvlist_get_number_array(nvl, "ids", &id_len); 139 counts = nvlist_get_number_array(nvl, "counters", &counter_len); 140 names = nvlist_get_string_array(nvl, "names", &names_len); 141 assert(id_len == counter_len); 142 assert(counter_len == names_len); 143 144 TAILQ_INIT(counters); 145 146 for (size_t i = 0; i < id_len; i++) { 147 struct pfctl_status_counter *c; 148 149 c = malloc(sizeof(*c)); 150 151 c->id = ids[i]; 152 c->counter = counts[i]; 153 c->name = strdup(names[i]); 154 155 TAILQ_INSERT_TAIL(counters, c, entry); 156 } 157 } 158 159 struct pfctl_status * 160 pfctl_get_status(int dev) 161 { 162 struct pfioc_nv nv; 163 struct pfctl_status *status; 164 nvlist_t *nvl; 165 size_t len; 166 const void *chksum; 167 168 status = calloc(1, sizeof(*status)); 169 if (status == NULL) 170 return (NULL); 171 172 nv.data = malloc(4096); 173 nv.len = nv.size = 4096; 174 175 if (ioctl(dev, DIOCGETSTATUSNV, &nv)) { 176 free(nv.data); 177 free(status); 178 return (NULL); 179 } 180 181 nvl = nvlist_unpack(nv.data, nv.len, 0); 182 free(nv.data); 183 if (nvl == NULL) { 184 free(status); 185 return (NULL); 186 } 187 188 status->running = nvlist_get_bool(nvl, "running"); 189 status->since = nvlist_get_number(nvl, "since"); 190 status->debug = nvlist_get_number(nvl, "debug"); 191 status->hostid = nvlist_get_number(nvl, "hostid"); 192 status->states = nvlist_get_number(nvl, "states"); 193 status->src_nodes = nvlist_get_number(nvl, "src_nodes"); 194 195 strlcpy(status->ifname, nvlist_get_string(nvl, "ifname"), 196 IFNAMSIZ); 197 chksum = nvlist_get_binary(nvl, "chksum", &len); 198 assert(len == PF_MD5_DIGEST_LENGTH); 199 memcpy(status->pf_chksum, chksum, len); 200 201 _pfctl_get_status_counters(nvlist_get_nvlist(nvl, "counters"), 202 &status->counters); 203 _pfctl_get_status_counters(nvlist_get_nvlist(nvl, "lcounters"), 204 &status->lcounters); 205 _pfctl_get_status_counters(nvlist_get_nvlist(nvl, "fcounters"), 206 &status->fcounters); 207 _pfctl_get_status_counters(nvlist_get_nvlist(nvl, "scounters"), 208 &status->scounters); 209 210 pf_nvuint_64_array(nvl, "pcounters", 2 * 2 * 3, 211 (uint64_t *)status->pcounters, NULL); 212 pf_nvuint_64_array(nvl, "bcounters", 2 * 2, 213 (uint64_t *)status->bcounters, NULL); 214 215 nvlist_destroy(nvl); 216 217 return (status); 218 } 219 220 void 221 pfctl_free_status(struct pfctl_status *status) 222 { 223 struct pfctl_status_counter *c, *tmp; 224 225 TAILQ_FOREACH_SAFE(c, &status->counters, entry, tmp) { 226 free(c->name); 227 free(c); 228 } 229 TAILQ_FOREACH_SAFE(c, &status->lcounters, entry, tmp) { 230 free(c->name); 231 free(c); 232 } 233 TAILQ_FOREACH_SAFE(c, &status->fcounters, entry, tmp) { 234 free(c->name); 235 free(c); 236 } 237 TAILQ_FOREACH_SAFE(c, &status->scounters, entry, tmp) { 238 free(c->name); 239 free(c); 240 } 241 242 free(status); 243 } 244 245 static void 246 pfctl_nv_add_addr(nvlist_t *nvparent, const char *name, 247 const struct pf_addr *addr) 248 { 249 nvlist_t *nvl = nvlist_create(0); 250 251 nvlist_add_binary(nvl, "addr", addr, sizeof(*addr)); 252 253 nvlist_add_nvlist(nvparent, name, nvl); 254 nvlist_destroy(nvl); 255 } 256 257 static void 258 pf_nvaddr_to_addr(const nvlist_t *nvl, struct pf_addr *addr) 259 { 260 size_t len; 261 const void *data; 262 263 data = nvlist_get_binary(nvl, "addr", &len); 264 assert(len == sizeof(struct pf_addr)); 265 memcpy(addr, data, len); 266 } 267 268 static void 269 pfctl_nv_add_addr_wrap(nvlist_t *nvparent, const char *name, 270 const struct pf_addr_wrap *addr) 271 { 272 nvlist_t *nvl = nvlist_create(0); 273 274 nvlist_add_number(nvl, "type", addr->type); 275 nvlist_add_number(nvl, "iflags", addr->iflags); 276 if (addr->type == PF_ADDR_DYNIFTL) 277 nvlist_add_string(nvl, "ifname", addr->v.ifname); 278 if (addr->type == PF_ADDR_TABLE) 279 nvlist_add_string(nvl, "tblname", addr->v.tblname); 280 pfctl_nv_add_addr(nvl, "addr", &addr->v.a.addr); 281 pfctl_nv_add_addr(nvl, "mask", &addr->v.a.mask); 282 283 nvlist_add_nvlist(nvparent, name, nvl); 284 nvlist_destroy(nvl); 285 } 286 287 static void 288 pf_nvaddr_wrap_to_addr_wrap(const nvlist_t *nvl, struct pf_addr_wrap *addr) 289 { 290 addr->type = nvlist_get_number(nvl, "type"); 291 addr->iflags = nvlist_get_number(nvl, "iflags"); 292 if (addr->type == PF_ADDR_DYNIFTL) 293 strlcpy(addr->v.ifname, nvlist_get_string(nvl, "ifname"), 294 IFNAMSIZ); 295 if (addr->type == PF_ADDR_TABLE) 296 strlcpy(addr->v.tblname, nvlist_get_string(nvl, "tblname"), 297 PF_TABLE_NAME_SIZE); 298 299 pf_nvaddr_to_addr(nvlist_get_nvlist(nvl, "addr"), &addr->v.a.addr); 300 pf_nvaddr_to_addr(nvlist_get_nvlist(nvl, "mask"), &addr->v.a.mask); 301 } 302 303 static void 304 pfctl_nv_add_rule_addr(nvlist_t *nvparent, const char *name, 305 const struct pf_rule_addr *addr) 306 { 307 uint64_t ports[2]; 308 nvlist_t *nvl = nvlist_create(0); 309 310 pfctl_nv_add_addr_wrap(nvl, "addr", &addr->addr); 311 ports[0] = addr->port[0]; 312 ports[1] = addr->port[1]; 313 nvlist_add_number_array(nvl, "port", ports, 2); 314 nvlist_add_number(nvl, "neg", addr->neg); 315 nvlist_add_number(nvl, "port_op", addr->port_op); 316 317 nvlist_add_nvlist(nvparent, name, nvl); 318 nvlist_destroy(nvl); 319 } 320 321 static void 322 pf_nvrule_addr_to_rule_addr(const nvlist_t *nvl, struct pf_rule_addr *addr) 323 { 324 pf_nvaddr_wrap_to_addr_wrap(nvlist_get_nvlist(nvl, "addr"), &addr->addr); 325 326 pf_nvuint_16_array(nvl, "port", 2, addr->port, NULL); 327 addr->neg = nvlist_get_number(nvl, "neg"); 328 addr->port_op = nvlist_get_number(nvl, "port_op"); 329 } 330 331 static void 332 pfctl_nv_add_mape(nvlist_t *nvparent, const char *name, 333 const struct pf_mape_portset *mape) 334 { 335 nvlist_t *nvl = nvlist_create(0); 336 337 nvlist_add_number(nvl, "offset", mape->offset); 338 nvlist_add_number(nvl, "psidlen", mape->psidlen); 339 nvlist_add_number(nvl, "psid", mape->psid); 340 nvlist_add_nvlist(nvparent, name, nvl); 341 nvlist_destroy(nvl); 342 } 343 344 static void 345 pfctl_nv_add_pool(nvlist_t *nvparent, const char *name, 346 const struct pfctl_pool *pool) 347 { 348 uint64_t ports[2]; 349 nvlist_t *nvl = nvlist_create(0); 350 351 nvlist_add_binary(nvl, "key", &pool->key, sizeof(pool->key)); 352 pfctl_nv_add_addr(nvl, "counter", &pool->counter); 353 nvlist_add_number(nvl, "tblidx", pool->tblidx); 354 355 ports[0] = pool->proxy_port[0]; 356 ports[1] = pool->proxy_port[1]; 357 nvlist_add_number_array(nvl, "proxy_port", ports, 2); 358 nvlist_add_number(nvl, "opts", pool->opts); 359 pfctl_nv_add_mape(nvl, "mape", &pool->mape); 360 361 nvlist_add_nvlist(nvparent, name, nvl); 362 nvlist_destroy(nvl); 363 } 364 365 static void 366 pf_nvmape_to_mape(const nvlist_t *nvl, struct pf_mape_portset *mape) 367 { 368 mape->offset = nvlist_get_number(nvl, "offset"); 369 mape->psidlen = nvlist_get_number(nvl, "psidlen"); 370 mape->psid = nvlist_get_number(nvl, "psid"); 371 } 372 373 static void 374 pf_nvpool_to_pool(const nvlist_t *nvl, struct pfctl_pool *pool) 375 { 376 size_t len; 377 const void *data; 378 379 data = nvlist_get_binary(nvl, "key", &len); 380 assert(len == sizeof(pool->key)); 381 memcpy(&pool->key, data, len); 382 383 pf_nvaddr_to_addr(nvlist_get_nvlist(nvl, "counter"), &pool->counter); 384 385 pool->tblidx = nvlist_get_number(nvl, "tblidx"); 386 pf_nvuint_16_array(nvl, "proxy_port", 2, pool->proxy_port, NULL); 387 pool->opts = nvlist_get_number(nvl, "opts"); 388 389 if (nvlist_exists_nvlist(nvl, "mape")) 390 pf_nvmape_to_mape(nvlist_get_nvlist(nvl, "mape"), &pool->mape); 391 } 392 393 static void 394 pfctl_nv_add_uid(nvlist_t *nvparent, const char *name, 395 const struct pf_rule_uid *uid) 396 { 397 uint64_t uids[2]; 398 nvlist_t *nvl = nvlist_create(0); 399 400 uids[0] = uid->uid[0]; 401 uids[1] = uid->uid[1]; 402 nvlist_add_number_array(nvl, "uid", uids, 2); 403 nvlist_add_number(nvl, "op", uid->op); 404 405 nvlist_add_nvlist(nvparent, name, nvl); 406 nvlist_destroy(nvl); 407 } 408 409 static void 410 pf_nvrule_uid_to_rule_uid(const nvlist_t *nvl, struct pf_rule_uid *uid) 411 { 412 pf_nvuint_32_array(nvl, "uid", 2, uid->uid, NULL); 413 uid->op = nvlist_get_number(nvl, "op"); 414 } 415 416 static void 417 pfctl_nv_add_divert(nvlist_t *nvparent, const char *name, 418 const struct pfctl_rule *r) 419 { 420 nvlist_t *nvl = nvlist_create(0); 421 422 pfctl_nv_add_addr(nvl, "addr", &r->divert.addr); 423 nvlist_add_number(nvl, "port", r->divert.port); 424 425 nvlist_add_nvlist(nvparent, name, nvl); 426 nvlist_destroy(nvl); 427 } 428 429 static void 430 pf_nvdivert_to_divert(const nvlist_t *nvl, struct pfctl_rule *rule) 431 { 432 pf_nvaddr_to_addr(nvlist_get_nvlist(nvl, "addr"), &rule->divert.addr); 433 rule->divert.port = nvlist_get_number(nvl, "port"); 434 } 435 436 static void 437 pf_nvrule_to_rule(const nvlist_t *nvl, struct pfctl_rule *rule) 438 { 439 const uint64_t *skip; 440 const char *const *labels; 441 size_t skipcount, labelcount; 442 443 rule->nr = nvlist_get_number(nvl, "nr"); 444 445 pf_nvrule_addr_to_rule_addr(nvlist_get_nvlist(nvl, "src"), &rule->src); 446 pf_nvrule_addr_to_rule_addr(nvlist_get_nvlist(nvl, "dst"), &rule->dst); 447 448 skip = nvlist_get_number_array(nvl, "skip", &skipcount); 449 assert(skip); 450 assert(skipcount == PF_SKIP_COUNT); 451 for (int i = 0; i < PF_SKIP_COUNT; i++) 452 rule->skip[i].nr = skip[i]; 453 454 labels = nvlist_get_string_array(nvl, "labels", &labelcount); 455 assert(labelcount <= PF_RULE_MAX_LABEL_COUNT); 456 for (size_t i = 0; i < labelcount; i++) 457 strlcpy(rule->label[i], labels[i], PF_RULE_LABEL_SIZE); 458 rule->ridentifier = nvlist_get_number(nvl, "ridentifier"); 459 strlcpy(rule->ifname, nvlist_get_string(nvl, "ifname"), IFNAMSIZ); 460 strlcpy(rule->qname, nvlist_get_string(nvl, "qname"), PF_QNAME_SIZE); 461 strlcpy(rule->pqname, nvlist_get_string(nvl, "pqname"), PF_QNAME_SIZE); 462 strlcpy(rule->tagname, nvlist_get_string(nvl, "tagname"), 463 PF_TAG_NAME_SIZE); 464 strlcpy(rule->match_tagname, nvlist_get_string(nvl, "match_tagname"), 465 PF_TAG_NAME_SIZE); 466 467 strlcpy(rule->overload_tblname, nvlist_get_string(nvl, "overload_tblname"), 468 PF_TABLE_NAME_SIZE); 469 470 pf_nvpool_to_pool(nvlist_get_nvlist(nvl, "rpool"), &rule->rpool); 471 472 rule->evaluations = nvlist_get_number(nvl, "evaluations"); 473 pf_nvuint_64_array(nvl, "packets", 2, rule->packets, NULL); 474 pf_nvuint_64_array(nvl, "bytes", 2, rule->bytes, NULL); 475 476 rule->os_fingerprint = nvlist_get_number(nvl, "os_fingerprint"); 477 478 rule->rtableid = nvlist_get_number(nvl, "rtableid"); 479 pf_nvuint_32_array(nvl, "timeout", PFTM_MAX, rule->timeout, NULL); 480 rule->max_states = nvlist_get_number(nvl, "max_states"); 481 rule->max_src_nodes = nvlist_get_number(nvl, "max_src_nodes"); 482 rule->max_src_states = nvlist_get_number(nvl, "max_src_states"); 483 rule->max_src_conn = nvlist_get_number(nvl, "max_src_conn"); 484 rule->max_src_conn_rate.limit = 485 nvlist_get_number(nvl, "max_src_conn_rate.limit"); 486 rule->max_src_conn_rate.seconds = 487 nvlist_get_number(nvl, "max_src_conn_rate.seconds"); 488 rule->qid = nvlist_get_number(nvl, "qid"); 489 rule->pqid = nvlist_get_number(nvl, "pqid"); 490 rule->prob = nvlist_get_number(nvl, "prob"); 491 rule->cuid = nvlist_get_number(nvl, "cuid"); 492 rule->cpid = nvlist_get_number(nvl, "cpid"); 493 494 rule->return_icmp = nvlist_get_number(nvl, "return_icmp"); 495 rule->return_icmp6 = nvlist_get_number(nvl, "return_icmp6"); 496 rule->max_mss = nvlist_get_number(nvl, "max_mss"); 497 rule->scrub_flags = nvlist_get_number(nvl, "scrub_flags"); 498 499 pf_nvrule_uid_to_rule_uid(nvlist_get_nvlist(nvl, "uid"), &rule->uid); 500 pf_nvrule_uid_to_rule_uid(nvlist_get_nvlist(nvl, "gid"), 501 (struct pf_rule_uid *)&rule->gid); 502 503 rule->rule_flag = nvlist_get_number(nvl, "rule_flag"); 504 rule->action = nvlist_get_number(nvl, "action"); 505 rule->direction = nvlist_get_number(nvl, "direction"); 506 rule->log = nvlist_get_number(nvl, "log"); 507 rule->logif = nvlist_get_number(nvl, "logif"); 508 rule->quick = nvlist_get_number(nvl, "quick"); 509 rule->ifnot = nvlist_get_number(nvl, "ifnot"); 510 rule->match_tag_not = nvlist_get_number(nvl, "match_tag_not"); 511 rule->natpass = nvlist_get_number(nvl, "natpass"); 512 513 rule->keep_state = nvlist_get_number(nvl, "keep_state"); 514 rule->af = nvlist_get_number(nvl, "af"); 515 rule->proto = nvlist_get_number(nvl, "proto"); 516 rule->type = nvlist_get_number(nvl, "type"); 517 rule->code = nvlist_get_number(nvl, "code"); 518 rule->flags = nvlist_get_number(nvl, "flags"); 519 rule->flagset = nvlist_get_number(nvl, "flagset"); 520 rule->min_ttl = nvlist_get_number(nvl, "min_ttl"); 521 rule->allow_opts = nvlist_get_number(nvl, "allow_opts"); 522 rule->rt = nvlist_get_number(nvl, "rt"); 523 rule->return_ttl = nvlist_get_number(nvl, "return_ttl"); 524 rule->tos = nvlist_get_number(nvl, "tos"); 525 rule->set_tos = nvlist_get_number(nvl, "set_tos"); 526 rule->anchor_relative = nvlist_get_number(nvl, "anchor_relative"); 527 rule->anchor_wildcard = nvlist_get_number(nvl, "anchor_wildcard"); 528 529 rule->flush = nvlist_get_number(nvl, "flush"); 530 rule->prio = nvlist_get_number(nvl, "prio"); 531 pf_nvuint_8_array(nvl, "set_prio", 2, rule->set_prio, NULL); 532 533 pf_nvdivert_to_divert(nvlist_get_nvlist(nvl, "divert"), rule); 534 535 rule->states_cur = nvlist_get_number(nvl, "states_cur"); 536 rule->states_tot = nvlist_get_number(nvl, "states_tot"); 537 rule->src_nodes = nvlist_get_number(nvl, "src_nodes"); 538 } 539 540 int 541 pfctl_add_rule(int dev, const struct pfctl_rule *r, const char *anchor, 542 const char *anchor_call, uint32_t ticket, uint32_t pool_ticket) 543 { 544 struct pfioc_nv nv; 545 uint64_t timeouts[PFTM_MAX]; 546 uint64_t set_prio[2]; 547 nvlist_t *nvl, *nvlr; 548 size_t labelcount; 549 int ret; 550 551 nvl = nvlist_create(0); 552 nvlr = nvlist_create(0); 553 554 nvlist_add_number(nvl, "ticket", ticket); 555 nvlist_add_number(nvl, "pool_ticket", pool_ticket); 556 nvlist_add_string(nvl, "anchor", anchor); 557 nvlist_add_string(nvl, "anchor_call", anchor_call); 558 559 nvlist_add_number(nvlr, "nr", r->nr); 560 pfctl_nv_add_rule_addr(nvlr, "src", &r->src); 561 pfctl_nv_add_rule_addr(nvlr, "dst", &r->dst); 562 563 labelcount = 0; 564 while (r->label[labelcount][0] != 0 && 565 labelcount < PF_RULE_MAX_LABEL_COUNT) { 566 nvlist_append_string_array(nvlr, "labels", 567 r->label[labelcount]); 568 labelcount++; 569 } 570 nvlist_add_number(nvlr, "ridentifier", r->ridentifier); 571 572 nvlist_add_string(nvlr, "ifname", r->ifname); 573 nvlist_add_string(nvlr, "qname", r->qname); 574 nvlist_add_string(nvlr, "pqname", r->pqname); 575 nvlist_add_string(nvlr, "tagname", r->tagname); 576 nvlist_add_string(nvlr, "match_tagname", r->match_tagname); 577 nvlist_add_string(nvlr, "overload_tblname", r->overload_tblname); 578 579 pfctl_nv_add_pool(nvlr, "rpool", &r->rpool); 580 581 nvlist_add_number(nvlr, "os_fingerprint", r->os_fingerprint); 582 583 nvlist_add_number(nvlr, "rtableid", r->rtableid); 584 for (int i = 0; i < PFTM_MAX; i++) 585 timeouts[i] = r->timeout[i]; 586 nvlist_add_number_array(nvlr, "timeout", timeouts, PFTM_MAX); 587 nvlist_add_number(nvlr, "max_states", r->max_states); 588 nvlist_add_number(nvlr, "max_src_nodes", r->max_src_nodes); 589 nvlist_add_number(nvlr, "max_src_states", r->max_src_states); 590 nvlist_add_number(nvlr, "max_src_conn", r->max_src_conn); 591 nvlist_add_number(nvlr, "max_src_conn_rate.limit", 592 r->max_src_conn_rate.limit); 593 nvlist_add_number(nvlr, "max_src_conn_rate.seconds", 594 r->max_src_conn_rate.seconds); 595 nvlist_add_number(nvlr, "prob", r->prob); 596 nvlist_add_number(nvlr, "cuid", r->cuid); 597 nvlist_add_number(nvlr, "cpid", r->cpid); 598 599 nvlist_add_number(nvlr, "return_icmp", r->return_icmp); 600 nvlist_add_number(nvlr, "return_icmp6", r->return_icmp6); 601 602 nvlist_add_number(nvlr, "max_mss", r->max_mss); 603 nvlist_add_number(nvlr, "scrub_flags", r->scrub_flags); 604 605 pfctl_nv_add_uid(nvlr, "uid", &r->uid); 606 pfctl_nv_add_uid(nvlr, "gid", (const struct pf_rule_uid *)&r->gid); 607 608 nvlist_add_number(nvlr, "rule_flag", r->rule_flag); 609 nvlist_add_number(nvlr, "action", r->action); 610 nvlist_add_number(nvlr, "direction", r->direction); 611 nvlist_add_number(nvlr, "log", r->log); 612 nvlist_add_number(nvlr, "logif", r->logif); 613 nvlist_add_number(nvlr, "quick", r->quick); 614 nvlist_add_number(nvlr, "ifnot", r->ifnot); 615 nvlist_add_number(nvlr, "match_tag_not", r->match_tag_not); 616 nvlist_add_number(nvlr, "natpass", r->natpass); 617 618 nvlist_add_number(nvlr, "keep_state", r->keep_state); 619 nvlist_add_number(nvlr, "af", r->af); 620 nvlist_add_number(nvlr, "proto", r->proto); 621 nvlist_add_number(nvlr, "type", r->type); 622 nvlist_add_number(nvlr, "code", r->code); 623 nvlist_add_number(nvlr, "flags", r->flags); 624 nvlist_add_number(nvlr, "flagset", r->flagset); 625 nvlist_add_number(nvlr, "min_ttl", r->min_ttl); 626 nvlist_add_number(nvlr, "allow_opts", r->allow_opts); 627 nvlist_add_number(nvlr, "rt", r->rt); 628 nvlist_add_number(nvlr, "return_ttl", r->return_ttl); 629 nvlist_add_number(nvlr, "tos", r->tos); 630 nvlist_add_number(nvlr, "set_tos", r->set_tos); 631 nvlist_add_number(nvlr, "anchor_relative", r->anchor_relative); 632 nvlist_add_number(nvlr, "anchor_wildcard", r->anchor_wildcard); 633 634 nvlist_add_number(nvlr, "flush", r->flush); 635 636 nvlist_add_number(nvlr, "prio", r->prio); 637 set_prio[0] = r->set_prio[0]; 638 set_prio[1] = r->set_prio[1]; 639 nvlist_add_number_array(nvlr, "set_prio", set_prio, 2); 640 641 pfctl_nv_add_divert(nvlr, "divert", r); 642 643 nvlist_add_nvlist(nvl, "rule", nvlr); 644 nvlist_destroy(nvlr); 645 646 /* Now do the call. */ 647 nv.data = nvlist_pack(nvl, &nv.len); 648 nv.size = nv.len; 649 650 ret = ioctl(dev, DIOCADDRULENV, &nv); 651 652 free(nv.data); 653 nvlist_destroy(nvl); 654 655 return (ret); 656 } 657 658 int 659 pfctl_get_rule(int dev, uint32_t nr, uint32_t ticket, const char *anchor, 660 uint32_t ruleset, struct pfctl_rule *rule, char *anchor_call) 661 { 662 return (pfctl_get_clear_rule(dev, nr, ticket, anchor, ruleset, rule, 663 anchor_call, false)); 664 } 665 666 int pfctl_get_clear_rule(int dev, uint32_t nr, uint32_t ticket, 667 const char *anchor, uint32_t ruleset, struct pfctl_rule *rule, 668 char *anchor_call, bool clear) 669 { 670 struct pfioc_nv nv; 671 nvlist_t *nvl; 672 void *nvlpacked; 673 int ret; 674 675 nvl = nvlist_create(0); 676 if (nvl == 0) 677 return (ENOMEM); 678 679 nvlist_add_number(nvl, "nr", nr); 680 nvlist_add_number(nvl, "ticket", ticket); 681 nvlist_add_string(nvl, "anchor", anchor); 682 nvlist_add_number(nvl, "ruleset", ruleset); 683 684 if (clear) 685 nvlist_add_bool(nvl, "clear_counter", true); 686 687 nvlpacked = nvlist_pack(nvl, &nv.len); 688 if (nvlpacked == NULL) { 689 nvlist_destroy(nvl); 690 return (ENOMEM); 691 } 692 nv.data = malloc(8182); 693 nv.size = 8192; 694 assert(nv.len <= nv.size); 695 memcpy(nv.data, nvlpacked, nv.len); 696 nvlist_destroy(nvl); 697 nvl = NULL; 698 free(nvlpacked); 699 700 ret = ioctl(dev, DIOCGETRULENV, &nv); 701 if (ret != 0) { 702 free(nv.data); 703 return (ret); 704 } 705 706 nvl = nvlist_unpack(nv.data, nv.len, 0); 707 if (nvl == NULL) { 708 free(nv.data); 709 return (EIO); 710 } 711 712 pf_nvrule_to_rule(nvlist_get_nvlist(nvl, "rule"), rule); 713 714 if (anchor_call) 715 strlcpy(anchor_call, nvlist_get_string(nvl, "anchor_call"), 716 MAXPATHLEN); 717 718 free(nv.data); 719 nvlist_destroy(nvl); 720 721 return (0); 722 } 723 724 int 725 pfctl_set_keepcounters(int dev, bool keep) 726 { 727 struct pfioc_nv nv; 728 nvlist_t *nvl; 729 int ret; 730 731 nvl = nvlist_create(0); 732 733 nvlist_add_bool(nvl, "keep_counters", keep); 734 735 nv.data = nvlist_pack(nvl, &nv.len); 736 nv.size = nv.len; 737 738 nvlist_destroy(nvl); 739 740 ret = ioctl(dev, DIOCKEEPCOUNTERS, &nv); 741 742 free(nv.data); 743 return (ret); 744 } 745 746 static void 747 pfctl_nv_add_state_cmp(nvlist_t *nvl, const char *name, 748 const struct pfctl_state_cmp *cmp) 749 { 750 nvlist_t *nv; 751 752 nv = nvlist_create(0); 753 754 nvlist_add_number(nv, "id", cmp->id); 755 nvlist_add_number(nv, "creatorid", cmp->creatorid); 756 nvlist_add_number(nv, "direction", cmp->direction); 757 758 nvlist_add_nvlist(nvl, name, nv); 759 nvlist_destroy(nv); 760 } 761 762 static void 763 pf_state_key_export_to_state_key(struct pfctl_state_key *ps, 764 const struct pf_state_key_export *s) 765 { 766 bcopy(s->addr, ps->addr, sizeof(ps->addr[0]) * 2); 767 ps->port[0] = s->port[0]; 768 ps->port[1] = s->port[1]; 769 } 770 771 static void 772 pf_state_peer_export_to_state_peer(struct pfctl_state_peer *ps, 773 const struct pf_state_peer_export *s) 774 { 775 /* Ignore scrub. */ 776 ps->seqlo = s->seqlo; 777 ps->seqhi = s->seqhi; 778 ps->seqdiff = s->seqdiff; 779 /* Ignore max_win & mss */ 780 ps->state = s->state; 781 ps->wscale = s->wscale; 782 } 783 784 static void 785 pf_state_export_to_state(struct pfctl_state *ps, const struct pf_state_export *s) 786 { 787 assert(s->version >= PF_STATE_VERSION); 788 789 ps->id = s->id; 790 strlcpy(ps->ifname, s->ifname, sizeof(ps->ifname)); 791 strlcpy(ps->orig_ifname, s->orig_ifname, sizeof(ps->orig_ifname)); 792 pf_state_key_export_to_state_key(&ps->key[0], &s->key[0]); 793 pf_state_key_export_to_state_key(&ps->key[1], &s->key[1]); 794 pf_state_peer_export_to_state_peer(&ps->src, &s->src); 795 pf_state_peer_export_to_state_peer(&ps->dst, &s->dst); 796 bcopy(&s->rt_addr, &ps->rt_addr, sizeof(ps->rt_addr)); 797 ps->rule = ntohl(s->rule); 798 ps->anchor = ntohl(s->anchor); 799 ps->nat_rule = ntohl(s->nat_rule); 800 ps->creation = ntohl(s->creation); 801 ps->expire = ntohl(s->expire); 802 ps->packets[0] = s->packets[0]; 803 ps->packets[1] = s->packets[1]; 804 ps->bytes[0] = s->bytes[0]; 805 ps->bytes[1] = s->bytes[1]; 806 ps->creatorid = s->creatorid; 807 ps->key[0].proto = s->proto; 808 ps->key[1].proto = s->proto; 809 ps->key[0].af = s->af; 810 ps->key[1].af = s->af; 811 ps->direction = s->direction; 812 ps->state_flags = s->state_flags; 813 ps->sync_flags = s->sync_flags; 814 } 815 816 int 817 pfctl_get_states(int dev, struct pfctl_states *states) 818 { 819 struct pfioc_states_v2 ps; 820 struct pf_state_export *p; 821 char *inbuf = NULL, *newinbuf = NULL; 822 unsigned int len = 0; 823 int i, error; 824 825 bzero(&ps, sizeof(ps)); 826 ps.ps_req_version = PF_STATE_VERSION; 827 828 bzero(states, sizeof(*states)); 829 TAILQ_INIT(&states->states); 830 831 for (;;) { 832 ps.ps_len = len; 833 if (len) { 834 newinbuf = realloc(inbuf, len); 835 if (newinbuf == NULL) 836 return (ENOMEM); 837 ps.ps_buf = inbuf = newinbuf; 838 } 839 if ((error = ioctl(dev, DIOCGETSTATESV2, &ps)) < 0) { 840 free(inbuf); 841 return (error); 842 } 843 if (ps.ps_len + sizeof(struct pfioc_states_v2) < len) 844 break; 845 if (len == 0 && ps.ps_len == 0) 846 goto out; 847 if (len == 0 && ps.ps_len != 0) 848 len = ps.ps_len; 849 if (ps.ps_len == 0) 850 goto out; /* no states */ 851 len *= 2; 852 } 853 p = ps.ps_states; 854 855 for (i = 0; i < ps.ps_len; i += sizeof(*p), p++) { 856 struct pfctl_state *s = malloc(sizeof(*s)); 857 if (s == NULL) { 858 pfctl_free_states(states); 859 error = ENOMEM; 860 goto out; 861 } 862 863 pf_state_export_to_state(s, p); 864 TAILQ_INSERT_TAIL(&states->states, s, entry); 865 } 866 867 out: 868 free(inbuf); 869 return (error); 870 } 871 872 void 873 pfctl_free_states(struct pfctl_states *states) 874 { 875 struct pfctl_state *s, *tmp; 876 877 TAILQ_FOREACH_SAFE(s, &states->states, entry, tmp) { 878 free(s); 879 } 880 881 bzero(states, sizeof(*states)); 882 } 883 884 static int 885 _pfctl_clear_states(int dev, const struct pfctl_kill *kill, 886 unsigned int *killed, uint64_t ioctlval) 887 { 888 struct pfioc_nv nv; 889 nvlist_t *nvl; 890 int ret; 891 892 nvl = nvlist_create(0); 893 894 pfctl_nv_add_state_cmp(nvl, "cmp", &kill->cmp); 895 nvlist_add_number(nvl, "af", kill->af); 896 nvlist_add_number(nvl, "proto", kill->proto); 897 pfctl_nv_add_rule_addr(nvl, "src", &kill->src); 898 pfctl_nv_add_rule_addr(nvl, "dst", &kill->dst); 899 pfctl_nv_add_rule_addr(nvl, "rt_addr", &kill->rt_addr); 900 nvlist_add_string(nvl, "ifname", kill->ifname); 901 nvlist_add_string(nvl, "label", kill->label); 902 nvlist_add_bool(nvl, "kill_match", kill->kill_match); 903 904 nv.data = nvlist_pack(nvl, &nv.len); 905 nv.size = nv.len; 906 nvlist_destroy(nvl); 907 nvl = NULL; 908 909 ret = ioctl(dev, ioctlval, &nv); 910 if (ret != 0) { 911 free(nv.data); 912 return (ret); 913 } 914 915 nvl = nvlist_unpack(nv.data, nv.len, 0); 916 if (nvl == NULL) { 917 free(nv.data); 918 return (EIO); 919 } 920 921 if (killed) 922 *killed = nvlist_get_number(nvl, "killed"); 923 924 nvlist_destroy(nvl); 925 free(nv.data); 926 927 return (ret); 928 } 929 930 int 931 pfctl_clear_states(int dev, const struct pfctl_kill *kill, 932 unsigned int *killed) 933 { 934 return (_pfctl_clear_states(dev, kill, killed, DIOCCLRSTATESNV)); 935 } 936 937 int 938 pfctl_kill_states(int dev, const struct pfctl_kill *kill, unsigned int *killed) 939 { 940 return (_pfctl_clear_states(dev, kill, killed, DIOCKILLSTATESNV)); 941 } 942 943 static int 944 pfctl_get_limit(int dev, const int index, uint *limit) 945 { 946 struct pfioc_limit pl; 947 948 bzero(&pl, sizeof(pl)); 949 pl.index = index; 950 951 if (ioctl(dev, DIOCGETLIMIT, &pl) == -1) 952 return (errno); 953 954 *limit = pl.limit; 955 956 return (0); 957 } 958 959 int 960 pfctl_set_syncookies(int dev, const struct pfctl_syncookies *s) 961 { 962 struct pfioc_nv nv; 963 nvlist_t *nvl; 964 int ret; 965 uint state_limit; 966 967 ret = pfctl_get_limit(dev, PF_LIMIT_STATES, &state_limit); 968 if (ret != 0) 969 return (ret); 970 971 nvl = nvlist_create(0); 972 973 nvlist_add_bool(nvl, "enabled", s->mode != PFCTL_SYNCOOKIES_NEVER); 974 nvlist_add_bool(nvl, "adaptive", s->mode == PFCTL_SYNCOOKIES_ADAPTIVE); 975 nvlist_add_number(nvl, "highwater", state_limit * s->highwater / 100); 976 nvlist_add_number(nvl, "lowwater", state_limit * s->lowwater / 100); 977 978 nv.data = nvlist_pack(nvl, &nv.len); 979 nv.size = nv.len; 980 nvlist_destroy(nvl); 981 nvl = NULL; 982 983 ret = ioctl(dev, DIOCSETSYNCOOKIES, &nv); 984 985 free(nv.data); 986 return (ret); 987 } 988 989 int 990 pfctl_get_syncookies(int dev, struct pfctl_syncookies *s) 991 { 992 struct pfioc_nv nv; 993 nvlist_t *nvl; 994 int ret; 995 uint state_limit; 996 bool enabled, adaptive; 997 998 ret = pfctl_get_limit(dev, PF_LIMIT_STATES, &state_limit); 999 if (ret != 0) 1000 return (ret); 1001 1002 bzero(s, sizeof(*s)); 1003 1004 nv.data = malloc(256); 1005 nv.len = nv.size = 256; 1006 1007 if (ioctl(dev, DIOCGETSYNCOOKIES, &nv)) { 1008 free(nv.data); 1009 return (errno); 1010 } 1011 1012 nvl = nvlist_unpack(nv.data, nv.len, 0); 1013 free(nv.data); 1014 if (nvl == NULL) { 1015 return (EIO); 1016 } 1017 1018 enabled = nvlist_get_bool(nvl, "enabled"); 1019 adaptive = nvlist_get_bool(nvl, "adaptive"); 1020 1021 if (enabled) { 1022 if (adaptive) 1023 s->mode = PFCTL_SYNCOOKIES_ADAPTIVE; 1024 else 1025 s->mode = PFCTL_SYNCOOKIES_ALWAYS; 1026 } else { 1027 s->mode = PFCTL_SYNCOOKIES_NEVER; 1028 } 1029 1030 s->highwater = nvlist_get_number(nvl, "highwater") * 100 / state_limit; 1031 s->lowwater = nvlist_get_number(nvl, "lowwater") * 100 / state_limit; 1032 1033 nvlist_destroy(nvl); 1034 1035 return (0); 1036 } 1037