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 bzero(addr, sizeof(*addr)); 291 292 addr->type = nvlist_get_number(nvl, "type"); 293 addr->iflags = nvlist_get_number(nvl, "iflags"); 294 if (addr->type == PF_ADDR_DYNIFTL) { 295 strlcpy(addr->v.ifname, nvlist_get_string(nvl, "ifname"), 296 IFNAMSIZ); 297 addr->p.dyncnt = nvlist_get_number(nvl, "dyncnt"); 298 } 299 if (addr->type == PF_ADDR_TABLE) { 300 strlcpy(addr->v.tblname, nvlist_get_string(nvl, "tblname"), 301 PF_TABLE_NAME_SIZE); 302 addr->p.tblcnt = nvlist_get_number(nvl, "tblcnt"); 303 } 304 305 pf_nvaddr_to_addr(nvlist_get_nvlist(nvl, "addr"), &addr->v.a.addr); 306 pf_nvaddr_to_addr(nvlist_get_nvlist(nvl, "mask"), &addr->v.a.mask); 307 } 308 309 static void 310 pfctl_nv_add_rule_addr(nvlist_t *nvparent, const char *name, 311 const struct pf_rule_addr *addr) 312 { 313 uint64_t ports[2]; 314 nvlist_t *nvl = nvlist_create(0); 315 316 pfctl_nv_add_addr_wrap(nvl, "addr", &addr->addr); 317 ports[0] = addr->port[0]; 318 ports[1] = addr->port[1]; 319 nvlist_add_number_array(nvl, "port", ports, 2); 320 nvlist_add_number(nvl, "neg", addr->neg); 321 nvlist_add_number(nvl, "port_op", addr->port_op); 322 323 nvlist_add_nvlist(nvparent, name, nvl); 324 nvlist_destroy(nvl); 325 } 326 327 static void 328 pf_nvrule_addr_to_rule_addr(const nvlist_t *nvl, struct pf_rule_addr *addr) 329 { 330 pf_nvaddr_wrap_to_addr_wrap(nvlist_get_nvlist(nvl, "addr"), &addr->addr); 331 332 pf_nvuint_16_array(nvl, "port", 2, addr->port, NULL); 333 addr->neg = nvlist_get_number(nvl, "neg"); 334 addr->port_op = nvlist_get_number(nvl, "port_op"); 335 } 336 337 static void 338 pfctl_nv_add_mape(nvlist_t *nvparent, const char *name, 339 const struct pf_mape_portset *mape) 340 { 341 nvlist_t *nvl = nvlist_create(0); 342 343 nvlist_add_number(nvl, "offset", mape->offset); 344 nvlist_add_number(nvl, "psidlen", mape->psidlen); 345 nvlist_add_number(nvl, "psid", mape->psid); 346 nvlist_add_nvlist(nvparent, name, nvl); 347 nvlist_destroy(nvl); 348 } 349 350 static void 351 pfctl_nv_add_pool(nvlist_t *nvparent, const char *name, 352 const struct pfctl_pool *pool) 353 { 354 uint64_t ports[2]; 355 nvlist_t *nvl = nvlist_create(0); 356 357 nvlist_add_binary(nvl, "key", &pool->key, sizeof(pool->key)); 358 pfctl_nv_add_addr(nvl, "counter", &pool->counter); 359 nvlist_add_number(nvl, "tblidx", pool->tblidx); 360 361 ports[0] = pool->proxy_port[0]; 362 ports[1] = pool->proxy_port[1]; 363 nvlist_add_number_array(nvl, "proxy_port", ports, 2); 364 nvlist_add_number(nvl, "opts", pool->opts); 365 pfctl_nv_add_mape(nvl, "mape", &pool->mape); 366 367 nvlist_add_nvlist(nvparent, name, nvl); 368 nvlist_destroy(nvl); 369 } 370 371 static void 372 pf_nvmape_to_mape(const nvlist_t *nvl, struct pf_mape_portset *mape) 373 { 374 mape->offset = nvlist_get_number(nvl, "offset"); 375 mape->psidlen = nvlist_get_number(nvl, "psidlen"); 376 mape->psid = nvlist_get_number(nvl, "psid"); 377 } 378 379 static void 380 pf_nvpool_to_pool(const nvlist_t *nvl, struct pfctl_pool *pool) 381 { 382 size_t len; 383 const void *data; 384 385 data = nvlist_get_binary(nvl, "key", &len); 386 assert(len == sizeof(pool->key)); 387 memcpy(&pool->key, data, len); 388 389 pf_nvaddr_to_addr(nvlist_get_nvlist(nvl, "counter"), &pool->counter); 390 391 pool->tblidx = nvlist_get_number(nvl, "tblidx"); 392 pf_nvuint_16_array(nvl, "proxy_port", 2, pool->proxy_port, NULL); 393 pool->opts = nvlist_get_number(nvl, "opts"); 394 395 if (nvlist_exists_nvlist(nvl, "mape")) 396 pf_nvmape_to_mape(nvlist_get_nvlist(nvl, "mape"), &pool->mape); 397 } 398 399 static void 400 pfctl_nv_add_uid(nvlist_t *nvparent, const char *name, 401 const struct pf_rule_uid *uid) 402 { 403 uint64_t uids[2]; 404 nvlist_t *nvl = nvlist_create(0); 405 406 uids[0] = uid->uid[0]; 407 uids[1] = uid->uid[1]; 408 nvlist_add_number_array(nvl, "uid", uids, 2); 409 nvlist_add_number(nvl, "op", uid->op); 410 411 nvlist_add_nvlist(nvparent, name, nvl); 412 nvlist_destroy(nvl); 413 } 414 415 static void 416 pf_nvrule_uid_to_rule_uid(const nvlist_t *nvl, struct pf_rule_uid *uid) 417 { 418 pf_nvuint_32_array(nvl, "uid", 2, uid->uid, NULL); 419 uid->op = nvlist_get_number(nvl, "op"); 420 } 421 422 static void 423 pfctl_nv_add_divert(nvlist_t *nvparent, const char *name, 424 const struct pfctl_rule *r) 425 { 426 nvlist_t *nvl = nvlist_create(0); 427 428 pfctl_nv_add_addr(nvl, "addr", &r->divert.addr); 429 nvlist_add_number(nvl, "port", r->divert.port); 430 431 nvlist_add_nvlist(nvparent, name, nvl); 432 nvlist_destroy(nvl); 433 } 434 435 static void 436 pf_nvdivert_to_divert(const nvlist_t *nvl, struct pfctl_rule *rule) 437 { 438 pf_nvaddr_to_addr(nvlist_get_nvlist(nvl, "addr"), &rule->divert.addr); 439 rule->divert.port = nvlist_get_number(nvl, "port"); 440 } 441 442 static void 443 pf_nvrule_to_rule(const nvlist_t *nvl, struct pfctl_rule *rule) 444 { 445 const uint64_t *skip; 446 const char *const *labels; 447 size_t skipcount, labelcount; 448 449 rule->nr = nvlist_get_number(nvl, "nr"); 450 451 pf_nvrule_addr_to_rule_addr(nvlist_get_nvlist(nvl, "src"), &rule->src); 452 pf_nvrule_addr_to_rule_addr(nvlist_get_nvlist(nvl, "dst"), &rule->dst); 453 454 skip = nvlist_get_number_array(nvl, "skip", &skipcount); 455 assert(skip); 456 assert(skipcount == PF_SKIP_COUNT); 457 for (int i = 0; i < PF_SKIP_COUNT; i++) 458 rule->skip[i].nr = skip[i]; 459 460 labels = nvlist_get_string_array(nvl, "labels", &labelcount); 461 assert(labelcount <= PF_RULE_MAX_LABEL_COUNT); 462 for (size_t i = 0; i < labelcount; i++) 463 strlcpy(rule->label[i], labels[i], PF_RULE_LABEL_SIZE); 464 rule->ridentifier = nvlist_get_number(nvl, "ridentifier"); 465 strlcpy(rule->ifname, nvlist_get_string(nvl, "ifname"), IFNAMSIZ); 466 strlcpy(rule->qname, nvlist_get_string(nvl, "qname"), PF_QNAME_SIZE); 467 strlcpy(rule->pqname, nvlist_get_string(nvl, "pqname"), PF_QNAME_SIZE); 468 strlcpy(rule->tagname, nvlist_get_string(nvl, "tagname"), 469 PF_TAG_NAME_SIZE); 470 strlcpy(rule->match_tagname, nvlist_get_string(nvl, "match_tagname"), 471 PF_TAG_NAME_SIZE); 472 473 strlcpy(rule->overload_tblname, nvlist_get_string(nvl, "overload_tblname"), 474 PF_TABLE_NAME_SIZE); 475 476 pf_nvpool_to_pool(nvlist_get_nvlist(nvl, "rpool"), &rule->rpool); 477 478 rule->evaluations = nvlist_get_number(nvl, "evaluations"); 479 pf_nvuint_64_array(nvl, "packets", 2, rule->packets, NULL); 480 pf_nvuint_64_array(nvl, "bytes", 2, rule->bytes, NULL); 481 482 rule->os_fingerprint = nvlist_get_number(nvl, "os_fingerprint"); 483 484 rule->rtableid = nvlist_get_number(nvl, "rtableid"); 485 pf_nvuint_32_array(nvl, "timeout", PFTM_MAX, rule->timeout, NULL); 486 rule->max_states = nvlist_get_number(nvl, "max_states"); 487 rule->max_src_nodes = nvlist_get_number(nvl, "max_src_nodes"); 488 rule->max_src_states = nvlist_get_number(nvl, "max_src_states"); 489 rule->max_src_conn = nvlist_get_number(nvl, "max_src_conn"); 490 rule->max_src_conn_rate.limit = 491 nvlist_get_number(nvl, "max_src_conn_rate.limit"); 492 rule->max_src_conn_rate.seconds = 493 nvlist_get_number(nvl, "max_src_conn_rate.seconds"); 494 rule->qid = nvlist_get_number(nvl, "qid"); 495 rule->pqid = nvlist_get_number(nvl, "pqid"); 496 rule->dnpipe = nvlist_get_number(nvl, "dnpipe"); 497 rule->dnrpipe = nvlist_get_number(nvl, "dnrpipe"); 498 rule->free_flags = nvlist_get_number(nvl, "dnflags"); 499 rule->prob = nvlist_get_number(nvl, "prob"); 500 rule->cuid = nvlist_get_number(nvl, "cuid"); 501 rule->cpid = nvlist_get_number(nvl, "cpid"); 502 503 rule->return_icmp = nvlist_get_number(nvl, "return_icmp"); 504 rule->return_icmp6 = nvlist_get_number(nvl, "return_icmp6"); 505 rule->max_mss = nvlist_get_number(nvl, "max_mss"); 506 rule->scrub_flags = nvlist_get_number(nvl, "scrub_flags"); 507 508 pf_nvrule_uid_to_rule_uid(nvlist_get_nvlist(nvl, "uid"), &rule->uid); 509 pf_nvrule_uid_to_rule_uid(nvlist_get_nvlist(nvl, "gid"), 510 (struct pf_rule_uid *)&rule->gid); 511 512 rule->rule_flag = nvlist_get_number(nvl, "rule_flag"); 513 rule->action = nvlist_get_number(nvl, "action"); 514 rule->direction = nvlist_get_number(nvl, "direction"); 515 rule->log = nvlist_get_number(nvl, "log"); 516 rule->logif = nvlist_get_number(nvl, "logif"); 517 rule->quick = nvlist_get_number(nvl, "quick"); 518 rule->ifnot = nvlist_get_number(nvl, "ifnot"); 519 rule->match_tag_not = nvlist_get_number(nvl, "match_tag_not"); 520 rule->natpass = nvlist_get_number(nvl, "natpass"); 521 522 rule->keep_state = nvlist_get_number(nvl, "keep_state"); 523 rule->af = nvlist_get_number(nvl, "af"); 524 rule->proto = nvlist_get_number(nvl, "proto"); 525 rule->type = nvlist_get_number(nvl, "type"); 526 rule->code = nvlist_get_number(nvl, "code"); 527 rule->flags = nvlist_get_number(nvl, "flags"); 528 rule->flagset = nvlist_get_number(nvl, "flagset"); 529 rule->min_ttl = nvlist_get_number(nvl, "min_ttl"); 530 rule->allow_opts = nvlist_get_number(nvl, "allow_opts"); 531 rule->rt = nvlist_get_number(nvl, "rt"); 532 rule->return_ttl = nvlist_get_number(nvl, "return_ttl"); 533 rule->tos = nvlist_get_number(nvl, "tos"); 534 rule->set_tos = nvlist_get_number(nvl, "set_tos"); 535 rule->anchor_relative = nvlist_get_number(nvl, "anchor_relative"); 536 rule->anchor_wildcard = nvlist_get_number(nvl, "anchor_wildcard"); 537 538 rule->flush = nvlist_get_number(nvl, "flush"); 539 rule->prio = nvlist_get_number(nvl, "prio"); 540 pf_nvuint_8_array(nvl, "set_prio", 2, rule->set_prio, NULL); 541 542 pf_nvdivert_to_divert(nvlist_get_nvlist(nvl, "divert"), rule); 543 544 rule->states_cur = nvlist_get_number(nvl, "states_cur"); 545 rule->states_tot = nvlist_get_number(nvl, "states_tot"); 546 rule->src_nodes = nvlist_get_number(nvl, "src_nodes"); 547 } 548 549 int 550 pfctl_add_rule(int dev, const struct pfctl_rule *r, const char *anchor, 551 const char *anchor_call, uint32_t ticket, uint32_t pool_ticket) 552 { 553 struct pfioc_nv nv; 554 uint64_t timeouts[PFTM_MAX]; 555 uint64_t set_prio[2]; 556 nvlist_t *nvl, *nvlr; 557 size_t labelcount; 558 int ret; 559 560 nvl = nvlist_create(0); 561 nvlr = nvlist_create(0); 562 563 nvlist_add_number(nvl, "ticket", ticket); 564 nvlist_add_number(nvl, "pool_ticket", pool_ticket); 565 nvlist_add_string(nvl, "anchor", anchor); 566 nvlist_add_string(nvl, "anchor_call", anchor_call); 567 568 nvlist_add_number(nvlr, "nr", r->nr); 569 pfctl_nv_add_rule_addr(nvlr, "src", &r->src); 570 pfctl_nv_add_rule_addr(nvlr, "dst", &r->dst); 571 572 labelcount = 0; 573 while (r->label[labelcount][0] != 0 && 574 labelcount < PF_RULE_MAX_LABEL_COUNT) { 575 nvlist_append_string_array(nvlr, "labels", 576 r->label[labelcount]); 577 labelcount++; 578 } 579 nvlist_add_number(nvlr, "ridentifier", r->ridentifier); 580 581 nvlist_add_string(nvlr, "ifname", r->ifname); 582 nvlist_add_string(nvlr, "qname", r->qname); 583 nvlist_add_string(nvlr, "pqname", r->pqname); 584 nvlist_add_string(nvlr, "tagname", r->tagname); 585 nvlist_add_string(nvlr, "match_tagname", r->match_tagname); 586 nvlist_add_string(nvlr, "overload_tblname", r->overload_tblname); 587 588 pfctl_nv_add_pool(nvlr, "rpool", &r->rpool); 589 590 nvlist_add_number(nvlr, "os_fingerprint", r->os_fingerprint); 591 592 nvlist_add_number(nvlr, "rtableid", r->rtableid); 593 for (int i = 0; i < PFTM_MAX; i++) 594 timeouts[i] = r->timeout[i]; 595 nvlist_add_number_array(nvlr, "timeout", timeouts, PFTM_MAX); 596 nvlist_add_number(nvlr, "max_states", r->max_states); 597 nvlist_add_number(nvlr, "max_src_nodes", r->max_src_nodes); 598 nvlist_add_number(nvlr, "max_src_states", r->max_src_states); 599 nvlist_add_number(nvlr, "max_src_conn", r->max_src_conn); 600 nvlist_add_number(nvlr, "max_src_conn_rate.limit", 601 r->max_src_conn_rate.limit); 602 nvlist_add_number(nvlr, "max_src_conn_rate.seconds", 603 r->max_src_conn_rate.seconds); 604 nvlist_add_number(nvlr, "dnpipe", r->dnpipe); 605 nvlist_add_number(nvlr, "dnrpipe", r->dnrpipe); 606 nvlist_add_number(nvlr, "dnflags", r->free_flags); 607 nvlist_add_number(nvlr, "prob", r->prob); 608 nvlist_add_number(nvlr, "cuid", r->cuid); 609 nvlist_add_number(nvlr, "cpid", r->cpid); 610 611 nvlist_add_number(nvlr, "return_icmp", r->return_icmp); 612 nvlist_add_number(nvlr, "return_icmp6", r->return_icmp6); 613 614 nvlist_add_number(nvlr, "max_mss", r->max_mss); 615 nvlist_add_number(nvlr, "scrub_flags", r->scrub_flags); 616 617 pfctl_nv_add_uid(nvlr, "uid", &r->uid); 618 pfctl_nv_add_uid(nvlr, "gid", (const struct pf_rule_uid *)&r->gid); 619 620 nvlist_add_number(nvlr, "rule_flag", r->rule_flag); 621 nvlist_add_number(nvlr, "action", r->action); 622 nvlist_add_number(nvlr, "direction", r->direction); 623 nvlist_add_number(nvlr, "log", r->log); 624 nvlist_add_number(nvlr, "logif", r->logif); 625 nvlist_add_number(nvlr, "quick", r->quick); 626 nvlist_add_number(nvlr, "ifnot", r->ifnot); 627 nvlist_add_number(nvlr, "match_tag_not", r->match_tag_not); 628 nvlist_add_number(nvlr, "natpass", r->natpass); 629 630 nvlist_add_number(nvlr, "keep_state", r->keep_state); 631 nvlist_add_number(nvlr, "af", r->af); 632 nvlist_add_number(nvlr, "proto", r->proto); 633 nvlist_add_number(nvlr, "type", r->type); 634 nvlist_add_number(nvlr, "code", r->code); 635 nvlist_add_number(nvlr, "flags", r->flags); 636 nvlist_add_number(nvlr, "flagset", r->flagset); 637 nvlist_add_number(nvlr, "min_ttl", r->min_ttl); 638 nvlist_add_number(nvlr, "allow_opts", r->allow_opts); 639 nvlist_add_number(nvlr, "rt", r->rt); 640 nvlist_add_number(nvlr, "return_ttl", r->return_ttl); 641 nvlist_add_number(nvlr, "tos", r->tos); 642 nvlist_add_number(nvlr, "set_tos", r->set_tos); 643 nvlist_add_number(nvlr, "anchor_relative", r->anchor_relative); 644 nvlist_add_number(nvlr, "anchor_wildcard", r->anchor_wildcard); 645 646 nvlist_add_number(nvlr, "flush", r->flush); 647 648 nvlist_add_number(nvlr, "prio", r->prio); 649 set_prio[0] = r->set_prio[0]; 650 set_prio[1] = r->set_prio[1]; 651 nvlist_add_number_array(nvlr, "set_prio", set_prio, 2); 652 653 pfctl_nv_add_divert(nvlr, "divert", r); 654 655 nvlist_add_nvlist(nvl, "rule", nvlr); 656 nvlist_destroy(nvlr); 657 658 /* Now do the call. */ 659 nv.data = nvlist_pack(nvl, &nv.len); 660 nv.size = nv.len; 661 662 ret = ioctl(dev, DIOCADDRULENV, &nv); 663 664 free(nv.data); 665 nvlist_destroy(nvl); 666 667 return (ret); 668 } 669 670 int 671 pfctl_get_rule(int dev, uint32_t nr, uint32_t ticket, const char *anchor, 672 uint32_t ruleset, struct pfctl_rule *rule, char *anchor_call) 673 { 674 return (pfctl_get_clear_rule(dev, nr, ticket, anchor, ruleset, rule, 675 anchor_call, false)); 676 } 677 678 int pfctl_get_clear_rule(int dev, uint32_t nr, uint32_t ticket, 679 const char *anchor, uint32_t ruleset, struct pfctl_rule *rule, 680 char *anchor_call, bool clear) 681 { 682 struct pfioc_nv nv; 683 nvlist_t *nvl; 684 void *nvlpacked; 685 int ret; 686 687 nvl = nvlist_create(0); 688 if (nvl == 0) 689 return (ENOMEM); 690 691 nvlist_add_number(nvl, "nr", nr); 692 nvlist_add_number(nvl, "ticket", ticket); 693 nvlist_add_string(nvl, "anchor", anchor); 694 nvlist_add_number(nvl, "ruleset", ruleset); 695 696 if (clear) 697 nvlist_add_bool(nvl, "clear_counter", true); 698 699 nvlpacked = nvlist_pack(nvl, &nv.len); 700 if (nvlpacked == NULL) { 701 nvlist_destroy(nvl); 702 return (ENOMEM); 703 } 704 nv.data = malloc(8182); 705 nv.size = 8192; 706 assert(nv.len <= nv.size); 707 memcpy(nv.data, nvlpacked, nv.len); 708 nvlist_destroy(nvl); 709 nvl = NULL; 710 free(nvlpacked); 711 712 ret = ioctl(dev, DIOCGETRULENV, &nv); 713 if (ret != 0) { 714 free(nv.data); 715 return (ret); 716 } 717 718 nvl = nvlist_unpack(nv.data, nv.len, 0); 719 if (nvl == NULL) { 720 free(nv.data); 721 return (EIO); 722 } 723 724 pf_nvrule_to_rule(nvlist_get_nvlist(nvl, "rule"), rule); 725 726 if (anchor_call) 727 strlcpy(anchor_call, nvlist_get_string(nvl, "anchor_call"), 728 MAXPATHLEN); 729 730 free(nv.data); 731 nvlist_destroy(nvl); 732 733 return (0); 734 } 735 736 int 737 pfctl_set_keepcounters(int dev, bool keep) 738 { 739 struct pfioc_nv nv; 740 nvlist_t *nvl; 741 int ret; 742 743 nvl = nvlist_create(0); 744 745 nvlist_add_bool(nvl, "keep_counters", keep); 746 747 nv.data = nvlist_pack(nvl, &nv.len); 748 nv.size = nv.len; 749 750 nvlist_destroy(nvl); 751 752 ret = ioctl(dev, DIOCKEEPCOUNTERS, &nv); 753 754 free(nv.data); 755 return (ret); 756 } 757 758 static void 759 pfctl_nv_add_state_cmp(nvlist_t *nvl, const char *name, 760 const struct pfctl_state_cmp *cmp) 761 { 762 nvlist_t *nv; 763 764 nv = nvlist_create(0); 765 766 nvlist_add_number(nv, "id", cmp->id); 767 nvlist_add_number(nv, "creatorid", cmp->creatorid); 768 nvlist_add_number(nv, "direction", cmp->direction); 769 770 nvlist_add_nvlist(nvl, name, nv); 771 nvlist_destroy(nv); 772 } 773 774 static void 775 pf_state_key_export_to_state_key(struct pfctl_state_key *ps, 776 const struct pf_state_key_export *s) 777 { 778 bcopy(s->addr, ps->addr, sizeof(ps->addr[0]) * 2); 779 ps->port[0] = s->port[0]; 780 ps->port[1] = s->port[1]; 781 } 782 783 static void 784 pf_state_peer_export_to_state_peer(struct pfctl_state_peer *ps, 785 const struct pf_state_peer_export *s) 786 { 787 /* Ignore scrub. */ 788 ps->seqlo = s->seqlo; 789 ps->seqhi = s->seqhi; 790 ps->seqdiff = s->seqdiff; 791 /* Ignore max_win & mss */ 792 ps->state = s->state; 793 ps->wscale = s->wscale; 794 } 795 796 static void 797 pf_state_export_to_state(struct pfctl_state *ps, const struct pf_state_export *s) 798 { 799 assert(s->version >= PF_STATE_VERSION); 800 801 ps->id = s->id; 802 strlcpy(ps->ifname, s->ifname, sizeof(ps->ifname)); 803 strlcpy(ps->orig_ifname, s->orig_ifname, sizeof(ps->orig_ifname)); 804 pf_state_key_export_to_state_key(&ps->key[0], &s->key[0]); 805 pf_state_key_export_to_state_key(&ps->key[1], &s->key[1]); 806 pf_state_peer_export_to_state_peer(&ps->src, &s->src); 807 pf_state_peer_export_to_state_peer(&ps->dst, &s->dst); 808 bcopy(&s->rt_addr, &ps->rt_addr, sizeof(ps->rt_addr)); 809 ps->rule = ntohl(s->rule); 810 ps->anchor = ntohl(s->anchor); 811 ps->nat_rule = ntohl(s->nat_rule); 812 ps->creation = ntohl(s->creation); 813 ps->expire = ntohl(s->expire); 814 ps->packets[0] = s->packets[0]; 815 ps->packets[1] = s->packets[1]; 816 ps->bytes[0] = s->bytes[0]; 817 ps->bytes[1] = s->bytes[1]; 818 ps->creatorid = s->creatorid; 819 ps->key[0].proto = s->proto; 820 ps->key[1].proto = s->proto; 821 ps->key[0].af = s->af; 822 ps->key[1].af = s->af; 823 ps->direction = s->direction; 824 ps->state_flags = s->state_flags; 825 ps->sync_flags = s->sync_flags; 826 } 827 828 int 829 pfctl_get_states(int dev, struct pfctl_states *states) 830 { 831 struct pfioc_states_v2 ps; 832 struct pf_state_export *p; 833 char *inbuf = NULL, *newinbuf = NULL; 834 unsigned int len = 0; 835 int i, error; 836 837 bzero(&ps, sizeof(ps)); 838 ps.ps_req_version = PF_STATE_VERSION; 839 840 bzero(states, sizeof(*states)); 841 TAILQ_INIT(&states->states); 842 843 for (;;) { 844 ps.ps_len = len; 845 if (len) { 846 newinbuf = realloc(inbuf, len); 847 if (newinbuf == NULL) 848 return (ENOMEM); 849 ps.ps_buf = inbuf = newinbuf; 850 } 851 if ((error = ioctl(dev, DIOCGETSTATESV2, &ps)) < 0) { 852 free(inbuf); 853 return (error); 854 } 855 if (ps.ps_len + sizeof(struct pfioc_states_v2) < len) 856 break; 857 if (len == 0 && ps.ps_len == 0) 858 goto out; 859 if (len == 0 && ps.ps_len != 0) 860 len = ps.ps_len; 861 if (ps.ps_len == 0) 862 goto out; /* no states */ 863 len *= 2; 864 } 865 p = ps.ps_states; 866 867 for (i = 0; i < ps.ps_len; i += sizeof(*p), p++) { 868 struct pfctl_state *s = malloc(sizeof(*s)); 869 if (s == NULL) { 870 pfctl_free_states(states); 871 error = ENOMEM; 872 goto out; 873 } 874 875 pf_state_export_to_state(s, p); 876 TAILQ_INSERT_TAIL(&states->states, s, entry); 877 } 878 879 out: 880 free(inbuf); 881 return (error); 882 } 883 884 void 885 pfctl_free_states(struct pfctl_states *states) 886 { 887 struct pfctl_state *s, *tmp; 888 889 TAILQ_FOREACH_SAFE(s, &states->states, entry, tmp) { 890 free(s); 891 } 892 893 bzero(states, sizeof(*states)); 894 } 895 896 static int 897 _pfctl_clear_states(int dev, const struct pfctl_kill *kill, 898 unsigned int *killed, uint64_t ioctlval) 899 { 900 struct pfioc_nv nv; 901 nvlist_t *nvl; 902 int ret; 903 904 nvl = nvlist_create(0); 905 906 pfctl_nv_add_state_cmp(nvl, "cmp", &kill->cmp); 907 nvlist_add_number(nvl, "af", kill->af); 908 nvlist_add_number(nvl, "proto", kill->proto); 909 pfctl_nv_add_rule_addr(nvl, "src", &kill->src); 910 pfctl_nv_add_rule_addr(nvl, "dst", &kill->dst); 911 pfctl_nv_add_rule_addr(nvl, "rt_addr", &kill->rt_addr); 912 nvlist_add_string(nvl, "ifname", kill->ifname); 913 nvlist_add_string(nvl, "label", kill->label); 914 nvlist_add_bool(nvl, "kill_match", kill->kill_match); 915 916 nv.data = nvlist_pack(nvl, &nv.len); 917 nv.size = nv.len; 918 nvlist_destroy(nvl); 919 nvl = NULL; 920 921 ret = ioctl(dev, ioctlval, &nv); 922 if (ret != 0) { 923 free(nv.data); 924 return (ret); 925 } 926 927 nvl = nvlist_unpack(nv.data, nv.len, 0); 928 if (nvl == NULL) { 929 free(nv.data); 930 return (EIO); 931 } 932 933 if (killed) 934 *killed = nvlist_get_number(nvl, "killed"); 935 936 nvlist_destroy(nvl); 937 free(nv.data); 938 939 return (ret); 940 } 941 942 int 943 pfctl_clear_states(int dev, const struct pfctl_kill *kill, 944 unsigned int *killed) 945 { 946 return (_pfctl_clear_states(dev, kill, killed, DIOCCLRSTATESNV)); 947 } 948 949 int 950 pfctl_kill_states(int dev, const struct pfctl_kill *kill, unsigned int *killed) 951 { 952 return (_pfctl_clear_states(dev, kill, killed, DIOCKILLSTATESNV)); 953 } 954 955 static int 956 pfctl_get_limit(int dev, const int index, uint *limit) 957 { 958 struct pfioc_limit pl; 959 960 bzero(&pl, sizeof(pl)); 961 pl.index = index; 962 963 if (ioctl(dev, DIOCGETLIMIT, &pl) == -1) 964 return (errno); 965 966 *limit = pl.limit; 967 968 return (0); 969 } 970 971 int 972 pfctl_set_syncookies(int dev, const struct pfctl_syncookies *s) 973 { 974 struct pfioc_nv nv; 975 nvlist_t *nvl; 976 int ret; 977 uint state_limit; 978 979 ret = pfctl_get_limit(dev, PF_LIMIT_STATES, &state_limit); 980 if (ret != 0) 981 return (ret); 982 983 nvl = nvlist_create(0); 984 985 nvlist_add_bool(nvl, "enabled", s->mode != PFCTL_SYNCOOKIES_NEVER); 986 nvlist_add_bool(nvl, "adaptive", s->mode == PFCTL_SYNCOOKIES_ADAPTIVE); 987 nvlist_add_number(nvl, "highwater", state_limit * s->highwater / 100); 988 nvlist_add_number(nvl, "lowwater", state_limit * s->lowwater / 100); 989 990 nv.data = nvlist_pack(nvl, &nv.len); 991 nv.size = nv.len; 992 nvlist_destroy(nvl); 993 nvl = NULL; 994 995 ret = ioctl(dev, DIOCSETSYNCOOKIES, &nv); 996 997 free(nv.data); 998 return (ret); 999 } 1000 1001 int 1002 pfctl_get_syncookies(int dev, struct pfctl_syncookies *s) 1003 { 1004 struct pfioc_nv nv; 1005 nvlist_t *nvl; 1006 int ret; 1007 uint state_limit; 1008 bool enabled, adaptive; 1009 1010 ret = pfctl_get_limit(dev, PF_LIMIT_STATES, &state_limit); 1011 if (ret != 0) 1012 return (ret); 1013 1014 bzero(s, sizeof(*s)); 1015 1016 nv.data = malloc(256); 1017 nv.len = nv.size = 256; 1018 1019 if (ioctl(dev, DIOCGETSYNCOOKIES, &nv)) { 1020 free(nv.data); 1021 return (errno); 1022 } 1023 1024 nvl = nvlist_unpack(nv.data, nv.len, 0); 1025 free(nv.data); 1026 if (nvl == NULL) { 1027 return (EIO); 1028 } 1029 1030 enabled = nvlist_get_bool(nvl, "enabled"); 1031 adaptive = nvlist_get_bool(nvl, "adaptive"); 1032 1033 if (enabled) { 1034 if (adaptive) 1035 s->mode = PFCTL_SYNCOOKIES_ADAPTIVE; 1036 else 1037 s->mode = PFCTL_SYNCOOKIES_ALWAYS; 1038 } else { 1039 s->mode = PFCTL_SYNCOOKIES_NEVER; 1040 } 1041 1042 s->highwater = nvlist_get_number(nvl, "highwater") * 100 / state_limit; 1043 s->lowwater = nvlist_get_number(nvl, "lowwater") * 100 / state_limit; 1044 1045 nvlist_destroy(nvl); 1046 1047 return (0); 1048 } 1049