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 static int _pfctl_clear_states(int , const struct pfctl_kill *, 54 unsigned int *, uint64_t); 55 56 static void 57 pf_nvuint_8_array(const nvlist_t *nvl, const char *name, size_t maxelems, 58 u_int8_t *numbers, size_t *nelems) 59 { 60 const uint64_t *tmp; 61 size_t elems; 62 63 tmp = nvlist_get_number_array(nvl, name, &elems); 64 assert(elems <= maxelems); 65 66 for (size_t i = 0; i < elems; i++) 67 numbers[i] = tmp[i]; 68 69 if (nelems) 70 *nelems = elems; 71 } 72 73 static void 74 pf_nvuint_16_array(const nvlist_t *nvl, const char *name, size_t maxelems, 75 u_int16_t *numbers, size_t *nelems) 76 { 77 const uint64_t *tmp; 78 size_t elems; 79 80 tmp = nvlist_get_number_array(nvl, name, &elems); 81 assert(elems <= maxelems); 82 83 for (size_t i = 0; i < elems; i++) 84 numbers[i] = tmp[i]; 85 86 if (nelems) 87 *nelems = elems; 88 } 89 90 static void 91 pf_nvuint_32_array(const nvlist_t *nvl, const char *name, size_t maxelems, 92 u_int32_t *numbers, size_t *nelems) 93 { 94 const uint64_t *tmp; 95 size_t elems; 96 97 tmp = nvlist_get_number_array(nvl, name, &elems); 98 assert(elems <= maxelems); 99 100 for (size_t i = 0; i < elems; i++) 101 numbers[i] = tmp[i]; 102 103 if (nelems) 104 *nelems = elems; 105 } 106 107 static void 108 pf_nvuint_64_array(const nvlist_t *nvl, const char *name, size_t maxelems, 109 u_int64_t *numbers, size_t *nelems) 110 { 111 const uint64_t *tmp; 112 size_t elems; 113 114 tmp = nvlist_get_number_array(nvl, name, &elems); 115 assert(elems <= maxelems); 116 117 for (size_t i = 0; i < elems; i++) 118 numbers[i] = tmp[i]; 119 120 if (nelems) 121 *nelems = elems; 122 } 123 124 static void 125 _pfctl_get_status_counters(const nvlist_t *nvl, 126 struct pfctl_status_counters *counters) 127 { 128 const uint64_t *ids, *counts; 129 const char *const *names; 130 size_t id_len, counter_len, names_len; 131 132 ids = nvlist_get_number_array(nvl, "ids", &id_len); 133 counts = nvlist_get_number_array(nvl, "counters", &counter_len); 134 names = nvlist_get_string_array(nvl, "names", &names_len); 135 assert(id_len == counter_len); 136 assert(counter_len == names_len); 137 138 TAILQ_INIT(counters); 139 140 for (size_t i = 0; i < id_len; i++) { 141 struct pfctl_status_counter *c; 142 143 c = malloc(sizeof(*c)); 144 145 c->id = ids[i]; 146 c->counter = counts[i]; 147 c->name = strdup(names[i]); 148 149 TAILQ_INSERT_TAIL(counters, c, entry); 150 } 151 } 152 153 struct pfctl_status * 154 pfctl_get_status(int dev) 155 { 156 struct pfioc_nv nv; 157 struct pfctl_status *status; 158 nvlist_t *nvl; 159 size_t len; 160 const void *chksum; 161 162 status = calloc(1, sizeof(*status)); 163 if (status == NULL) 164 return (NULL); 165 166 nv.data = malloc(4096); 167 nv.len = nv.size = 4096; 168 169 if (ioctl(dev, DIOCGETSTATUSNV, &nv)) { 170 free(nv.data); 171 free(status); 172 return (NULL); 173 } 174 175 nvl = nvlist_unpack(nv.data, nv.len, 0); 176 free(nv.data); 177 if (nvl == NULL) { 178 free(status); 179 return (NULL); 180 } 181 182 status->running = nvlist_get_bool(nvl, "running"); 183 status->since = nvlist_get_number(nvl, "since"); 184 status->debug = nvlist_get_number(nvl, "debug"); 185 status->hostid = nvlist_get_number(nvl, "hostid"); 186 status->states = nvlist_get_number(nvl, "states"); 187 status->src_nodes = nvlist_get_number(nvl, "src_nodes"); 188 189 strlcpy(status->ifname, nvlist_get_string(nvl, "ifname"), 190 IFNAMSIZ); 191 chksum = nvlist_get_binary(nvl, "chksum", &len); 192 assert(len == PF_MD5_DIGEST_LENGTH); 193 memcpy(status->pf_chksum, chksum, len); 194 195 _pfctl_get_status_counters(nvlist_get_nvlist(nvl, "counters"), 196 &status->counters); 197 _pfctl_get_status_counters(nvlist_get_nvlist(nvl, "lcounters"), 198 &status->lcounters); 199 _pfctl_get_status_counters(nvlist_get_nvlist(nvl, "fcounters"), 200 &status->fcounters); 201 _pfctl_get_status_counters(nvlist_get_nvlist(nvl, "scounters"), 202 &status->scounters); 203 204 pf_nvuint_64_array(nvl, "pcounters", 2 * 2 * 3, 205 (uint64_t *)status->pcounters, NULL); 206 pf_nvuint_64_array(nvl, "bcounters", 2 * 2, 207 (uint64_t *)status->bcounters, NULL); 208 209 nvlist_destroy(nvl); 210 211 return (status); 212 } 213 214 void 215 pfctl_free_status(struct pfctl_status *status) 216 { 217 struct pfctl_status_counter *c, *tmp; 218 219 TAILQ_FOREACH_SAFE(c, &status->counters, entry, tmp) { 220 free(c->name); 221 free(c); 222 } 223 TAILQ_FOREACH_SAFE(c, &status->lcounters, entry, tmp) { 224 free(c->name); 225 free(c); 226 } 227 TAILQ_FOREACH_SAFE(c, &status->fcounters, entry, tmp) { 228 free(c->name); 229 free(c); 230 } 231 TAILQ_FOREACH_SAFE(c, &status->scounters, entry, tmp) { 232 free(c->name); 233 free(c); 234 } 235 236 free(status); 237 } 238 239 static void 240 pfctl_nv_add_addr(nvlist_t *nvparent, const char *name, 241 const struct pf_addr *addr) 242 { 243 nvlist_t *nvl = nvlist_create(0); 244 245 nvlist_add_binary(nvl, "addr", addr, sizeof(*addr)); 246 247 nvlist_add_nvlist(nvparent, name, nvl); 248 nvlist_destroy(nvl); 249 } 250 251 static void 252 pf_nvaddr_to_addr(const nvlist_t *nvl, struct pf_addr *addr) 253 { 254 size_t len; 255 const void *data; 256 257 data = nvlist_get_binary(nvl, "addr", &len); 258 assert(len == sizeof(struct pf_addr)); 259 memcpy(addr, data, len); 260 } 261 262 static void 263 pfctl_nv_add_addr_wrap(nvlist_t *nvparent, const char *name, 264 const struct pf_addr_wrap *addr) 265 { 266 nvlist_t *nvl = nvlist_create(0); 267 268 nvlist_add_number(nvl, "type", addr->type); 269 nvlist_add_number(nvl, "iflags", addr->iflags); 270 if (addr->type == PF_ADDR_DYNIFTL) 271 nvlist_add_string(nvl, "ifname", addr->v.ifname); 272 if (addr->type == PF_ADDR_TABLE) 273 nvlist_add_string(nvl, "tblname", addr->v.tblname); 274 pfctl_nv_add_addr(nvl, "addr", &addr->v.a.addr); 275 pfctl_nv_add_addr(nvl, "mask", &addr->v.a.mask); 276 277 nvlist_add_nvlist(nvparent, name, nvl); 278 nvlist_destroy(nvl); 279 } 280 281 static void 282 pf_nvaddr_wrap_to_addr_wrap(const nvlist_t *nvl, struct pf_addr_wrap *addr) 283 { 284 addr->type = nvlist_get_number(nvl, "type"); 285 addr->iflags = nvlist_get_number(nvl, "iflags"); 286 if (addr->type == PF_ADDR_DYNIFTL) 287 strlcpy(addr->v.ifname, nvlist_get_string(nvl, "ifname"), 288 IFNAMSIZ); 289 if (addr->type == PF_ADDR_TABLE) 290 strlcpy(addr->v.tblname, nvlist_get_string(nvl, "tblname"), 291 PF_TABLE_NAME_SIZE); 292 293 pf_nvaddr_to_addr(nvlist_get_nvlist(nvl, "addr"), &addr->v.a.addr); 294 pf_nvaddr_to_addr(nvlist_get_nvlist(nvl, "mask"), &addr->v.a.mask); 295 } 296 297 static void 298 pfctl_nv_add_rule_addr(nvlist_t *nvparent, const char *name, 299 const struct pf_rule_addr *addr) 300 { 301 u_int64_t ports[2]; 302 nvlist_t *nvl = nvlist_create(0); 303 304 pfctl_nv_add_addr_wrap(nvl, "addr", &addr->addr); 305 ports[0] = addr->port[0]; 306 ports[1] = addr->port[1]; 307 nvlist_add_number_array(nvl, "port", ports, 2); 308 nvlist_add_number(nvl, "neg", addr->neg); 309 nvlist_add_number(nvl, "port_op", addr->port_op); 310 311 nvlist_add_nvlist(nvparent, name, nvl); 312 nvlist_destroy(nvl); 313 } 314 315 static void 316 pf_nvrule_addr_to_rule_addr(const nvlist_t *nvl, struct pf_rule_addr *addr) 317 { 318 pf_nvaddr_wrap_to_addr_wrap(nvlist_get_nvlist(nvl, "addr"), &addr->addr); 319 320 pf_nvuint_16_array(nvl, "port", 2, addr->port, NULL); 321 addr->neg = nvlist_get_number(nvl, "neg"); 322 addr->port_op = nvlist_get_number(nvl, "port_op"); 323 } 324 325 static void 326 pfctl_nv_add_mape(nvlist_t *nvparent, const char *name, 327 const struct pf_mape_portset *mape) 328 { 329 nvlist_t *nvl = nvlist_create(0); 330 331 nvlist_add_number(nvl, "offset", mape->offset); 332 nvlist_add_number(nvl, "psidlen", mape->psidlen); 333 nvlist_add_number(nvl, "psid", mape->psid); 334 nvlist_add_nvlist(nvparent, name, nvl); 335 nvlist_destroy(nvl); 336 } 337 338 static void 339 pfctl_nv_add_pool(nvlist_t *nvparent, const char *name, 340 const struct pfctl_pool *pool) 341 { 342 u_int64_t ports[2]; 343 nvlist_t *nvl = nvlist_create(0); 344 345 nvlist_add_binary(nvl, "key", &pool->key, sizeof(pool->key)); 346 pfctl_nv_add_addr(nvl, "counter", &pool->counter); 347 nvlist_add_number(nvl, "tblidx", pool->tblidx); 348 349 ports[0] = pool->proxy_port[0]; 350 ports[1] = pool->proxy_port[1]; 351 nvlist_add_number_array(nvl, "proxy_port", ports, 2); 352 nvlist_add_number(nvl, "opts", pool->opts); 353 pfctl_nv_add_mape(nvl, "mape", &pool->mape); 354 355 nvlist_add_nvlist(nvparent, name, nvl); 356 nvlist_destroy(nvl); 357 } 358 359 static void 360 pf_nvmape_to_mape(const nvlist_t *nvl, struct pf_mape_portset *mape) 361 { 362 mape->offset = nvlist_get_number(nvl, "offset"); 363 mape->psidlen = nvlist_get_number(nvl, "psidlen"); 364 mape->psid = nvlist_get_number(nvl, "psid"); 365 } 366 367 static void 368 pf_nvpool_to_pool(const nvlist_t *nvl, struct pfctl_pool *pool) 369 { 370 size_t len; 371 const void *data; 372 373 data = nvlist_get_binary(nvl, "key", &len); 374 assert(len == sizeof(pool->key)); 375 memcpy(&pool->key, data, len); 376 377 pf_nvaddr_to_addr(nvlist_get_nvlist(nvl, "counter"), &pool->counter); 378 379 pool->tblidx = nvlist_get_number(nvl, "tblidx"); 380 pf_nvuint_16_array(nvl, "proxy_port", 2, pool->proxy_port, NULL); 381 pool->opts = nvlist_get_number(nvl, "opts"); 382 383 if (nvlist_exists_nvlist(nvl, "mape")) 384 pf_nvmape_to_mape(nvlist_get_nvlist(nvl, "mape"), &pool->mape); 385 } 386 387 static void 388 pfctl_nv_add_uid(nvlist_t *nvparent, const char *name, 389 const struct pf_rule_uid *uid) 390 { 391 u_int64_t uids[2]; 392 nvlist_t *nvl = nvlist_create(0); 393 394 uids[0] = uid->uid[0]; 395 uids[1] = uid->uid[1]; 396 nvlist_add_number_array(nvl, "uid", uids, 2); 397 nvlist_add_number(nvl, "op", uid->op); 398 399 nvlist_add_nvlist(nvparent, name, nvl); 400 nvlist_destroy(nvl); 401 } 402 403 static void 404 pf_nvrule_uid_to_rule_uid(const nvlist_t *nvl, struct pf_rule_uid *uid) 405 { 406 pf_nvuint_32_array(nvl, "uid", 2, uid->uid, NULL); 407 uid->op = nvlist_get_number(nvl, "op"); 408 } 409 410 static void 411 pfctl_nv_add_divert(nvlist_t *nvparent, const char *name, 412 const struct pfctl_rule *r) 413 { 414 nvlist_t *nvl = nvlist_create(0); 415 416 pfctl_nv_add_addr(nvl, "addr", &r->divert.addr); 417 nvlist_add_number(nvl, "port", r->divert.port); 418 419 nvlist_add_nvlist(nvparent, name, nvl); 420 nvlist_destroy(nvl); 421 } 422 423 static void 424 pf_nvdivert_to_divert(const nvlist_t *nvl, struct pfctl_rule *rule) 425 { 426 pf_nvaddr_to_addr(nvlist_get_nvlist(nvl, "addr"), &rule->divert.addr); 427 rule->divert.port = nvlist_get_number(nvl, "port"); 428 } 429 430 static void 431 pf_nvrule_to_rule(const nvlist_t *nvl, struct pfctl_rule *rule) 432 { 433 const uint64_t *skip; 434 const char *const *labels; 435 size_t skipcount, labelcount; 436 437 rule->nr = nvlist_get_number(nvl, "nr"); 438 439 pf_nvrule_addr_to_rule_addr(nvlist_get_nvlist(nvl, "src"), &rule->src); 440 pf_nvrule_addr_to_rule_addr(nvlist_get_nvlist(nvl, "dst"), &rule->dst); 441 442 skip = nvlist_get_number_array(nvl, "skip", &skipcount); 443 assert(skip); 444 assert(skipcount == PF_SKIP_COUNT); 445 for (int i = 0; i < PF_SKIP_COUNT; i++) 446 rule->skip[i].nr = skip[i]; 447 448 labels = nvlist_get_string_array(nvl, "labels", &labelcount); 449 assert(labelcount <= PF_RULE_MAX_LABEL_COUNT); 450 for (size_t i = 0; i < labelcount; i++) 451 strlcpy(rule->label[i], labels[i], PF_RULE_LABEL_SIZE); 452 strlcpy(rule->ifname, nvlist_get_string(nvl, "ifname"), IFNAMSIZ); 453 strlcpy(rule->qname, nvlist_get_string(nvl, "qname"), PF_QNAME_SIZE); 454 strlcpy(rule->pqname, nvlist_get_string(nvl, "pqname"), PF_QNAME_SIZE); 455 strlcpy(rule->tagname, nvlist_get_string(nvl, "tagname"), 456 PF_TAG_NAME_SIZE); 457 strlcpy(rule->match_tagname, nvlist_get_string(nvl, "match_tagname"), 458 PF_TAG_NAME_SIZE); 459 460 strlcpy(rule->overload_tblname, nvlist_get_string(nvl, "overload_tblname"), 461 PF_TABLE_NAME_SIZE); 462 463 pf_nvpool_to_pool(nvlist_get_nvlist(nvl, "rpool"), &rule->rpool); 464 465 rule->evaluations = nvlist_get_number(nvl, "evaluations"); 466 pf_nvuint_64_array(nvl, "packets", 2, rule->packets, NULL); 467 pf_nvuint_64_array(nvl, "bytes", 2, rule->bytes, NULL); 468 469 rule->os_fingerprint = nvlist_get_number(nvl, "os_fingerprint"); 470 471 rule->rtableid = nvlist_get_number(nvl, "rtableid"); 472 pf_nvuint_32_array(nvl, "timeout", PFTM_MAX, rule->timeout, NULL); 473 rule->max_states = nvlist_get_number(nvl, "max_states"); 474 rule->max_src_nodes = nvlist_get_number(nvl, "max_src_nodes"); 475 rule->max_src_states = nvlist_get_number(nvl, "max_src_states"); 476 rule->max_src_conn = nvlist_get_number(nvl, "max_src_conn"); 477 rule->max_src_conn_rate.limit = 478 nvlist_get_number(nvl, "max_src_conn_rate.limit"); 479 rule->max_src_conn_rate.seconds = 480 nvlist_get_number(nvl, "max_src_conn_rate.seconds"); 481 rule->qid = nvlist_get_number(nvl, "qid"); 482 rule->pqid = nvlist_get_number(nvl, "pqid"); 483 rule->prob = nvlist_get_number(nvl, "prob"); 484 rule->cuid = nvlist_get_number(nvl, "cuid"); 485 rule->cpid = nvlist_get_number(nvl, "cpid"); 486 487 rule->return_icmp = nvlist_get_number(nvl, "return_icmp"); 488 rule->return_icmp6 = nvlist_get_number(nvl, "return_icmp6"); 489 rule->max_mss = nvlist_get_number(nvl, "max_mss"); 490 rule->scrub_flags = nvlist_get_number(nvl, "scrub_flags"); 491 492 pf_nvrule_uid_to_rule_uid(nvlist_get_nvlist(nvl, "uid"), &rule->uid); 493 pf_nvrule_uid_to_rule_uid(nvlist_get_nvlist(nvl, "gid"), 494 (struct pf_rule_uid *)&rule->gid); 495 496 rule->rule_flag = nvlist_get_number(nvl, "rule_flag"); 497 rule->action = nvlist_get_number(nvl, "action"); 498 rule->direction = nvlist_get_number(nvl, "direction"); 499 rule->log = nvlist_get_number(nvl, "log"); 500 rule->logif = nvlist_get_number(nvl, "logif"); 501 rule->quick = nvlist_get_number(nvl, "quick"); 502 rule->ifnot = nvlist_get_number(nvl, "ifnot"); 503 rule->match_tag_not = nvlist_get_number(nvl, "match_tag_not"); 504 rule->natpass = nvlist_get_number(nvl, "natpass"); 505 506 rule->keep_state = nvlist_get_number(nvl, "keep_state"); 507 rule->af = nvlist_get_number(nvl, "af"); 508 rule->proto = nvlist_get_number(nvl, "proto"); 509 rule->type = nvlist_get_number(nvl, "type"); 510 rule->code = nvlist_get_number(nvl, "code"); 511 rule->flags = nvlist_get_number(nvl, "flags"); 512 rule->flagset = nvlist_get_number(nvl, "flagset"); 513 rule->min_ttl = nvlist_get_number(nvl, "min_ttl"); 514 rule->allow_opts = nvlist_get_number(nvl, "allow_opts"); 515 rule->rt = nvlist_get_number(nvl, "rt"); 516 rule->return_ttl = nvlist_get_number(nvl, "return_ttl"); 517 rule->tos = nvlist_get_number(nvl, "tos"); 518 rule->set_tos = nvlist_get_number(nvl, "set_tos"); 519 rule->anchor_relative = nvlist_get_number(nvl, "anchor_relative"); 520 rule->anchor_wildcard = nvlist_get_number(nvl, "anchor_wildcard"); 521 522 rule->flush = nvlist_get_number(nvl, "flush"); 523 rule->prio = nvlist_get_number(nvl, "prio"); 524 pf_nvuint_8_array(nvl, "set_prio", 2, rule->set_prio, NULL); 525 526 pf_nvdivert_to_divert(nvlist_get_nvlist(nvl, "divert"), rule); 527 528 rule->states_cur = nvlist_get_number(nvl, "states_cur"); 529 rule->states_tot = nvlist_get_number(nvl, "states_tot"); 530 rule->src_nodes = nvlist_get_number(nvl, "src_nodes"); 531 } 532 533 int 534 pfctl_add_rule(int dev, const struct pfctl_rule *r, const char *anchor, 535 const char *anchor_call, u_int32_t ticket, u_int32_t pool_ticket) 536 { 537 struct pfioc_nv nv; 538 u_int64_t timeouts[PFTM_MAX]; 539 u_int64_t set_prio[2]; 540 nvlist_t *nvl, *nvlr; 541 size_t labelcount; 542 int ret; 543 544 nvl = nvlist_create(0); 545 nvlr = nvlist_create(0); 546 547 nvlist_add_number(nvl, "ticket", ticket); 548 nvlist_add_number(nvl, "pool_ticket", pool_ticket); 549 nvlist_add_string(nvl, "anchor", anchor); 550 nvlist_add_string(nvl, "anchor_call", anchor_call); 551 552 nvlist_add_number(nvlr, "nr", r->nr); 553 pfctl_nv_add_rule_addr(nvlr, "src", &r->src); 554 pfctl_nv_add_rule_addr(nvlr, "dst", &r->dst); 555 556 labelcount = 0; 557 while (r->label[labelcount][0] != 0 && 558 labelcount < PF_RULE_MAX_LABEL_COUNT) { 559 nvlist_append_string_array(nvlr, "labels", 560 r->label[labelcount]); 561 labelcount++; 562 } 563 564 nvlist_add_string(nvlr, "ifname", r->ifname); 565 nvlist_add_string(nvlr, "qname", r->qname); 566 nvlist_add_string(nvlr, "pqname", r->pqname); 567 nvlist_add_string(nvlr, "tagname", r->tagname); 568 nvlist_add_string(nvlr, "match_tagname", r->match_tagname); 569 nvlist_add_string(nvlr, "overload_tblname", r->overload_tblname); 570 571 pfctl_nv_add_pool(nvlr, "rpool", &r->rpool); 572 573 nvlist_add_number(nvlr, "os_fingerprint", r->os_fingerprint); 574 575 nvlist_add_number(nvlr, "rtableid", r->rtableid); 576 for (int i = 0; i < PFTM_MAX; i++) 577 timeouts[i] = r->timeout[i]; 578 nvlist_add_number_array(nvlr, "timeout", timeouts, PFTM_MAX); 579 nvlist_add_number(nvlr, "max_states", r->max_states); 580 nvlist_add_number(nvlr, "max_src_nodes", r->max_src_nodes); 581 nvlist_add_number(nvlr, "max_src_states", r->max_src_states); 582 nvlist_add_number(nvlr, "max_src_conn", r->max_src_conn); 583 nvlist_add_number(nvlr, "max_src_conn_rate.limit", 584 r->max_src_conn_rate.limit); 585 nvlist_add_number(nvlr, "max_src_conn_rate.seconds", 586 r->max_src_conn_rate.seconds); 587 nvlist_add_number(nvlr, "prob", r->prob); 588 nvlist_add_number(nvlr, "cuid", r->cuid); 589 nvlist_add_number(nvlr, "cpid", r->cpid); 590 591 nvlist_add_number(nvlr, "return_icmp", r->return_icmp); 592 nvlist_add_number(nvlr, "return_icmp6", r->return_icmp6); 593 594 nvlist_add_number(nvlr, "max_mss", r->max_mss); 595 nvlist_add_number(nvlr, "scrub_flags", r->scrub_flags); 596 597 pfctl_nv_add_uid(nvlr, "uid", &r->uid); 598 pfctl_nv_add_uid(nvlr, "gid", (const struct pf_rule_uid *)&r->gid); 599 600 nvlist_add_number(nvlr, "rule_flag", r->rule_flag); 601 nvlist_add_number(nvlr, "action", r->action); 602 nvlist_add_number(nvlr, "direction", r->direction); 603 nvlist_add_number(nvlr, "log", r->log); 604 nvlist_add_number(nvlr, "logif", r->logif); 605 nvlist_add_number(nvlr, "quick", r->quick); 606 nvlist_add_number(nvlr, "ifnot", r->ifnot); 607 nvlist_add_number(nvlr, "match_tag_not", r->match_tag_not); 608 nvlist_add_number(nvlr, "natpass", r->natpass); 609 610 nvlist_add_number(nvlr, "keep_state", r->keep_state); 611 nvlist_add_number(nvlr, "af", r->af); 612 nvlist_add_number(nvlr, "proto", r->proto); 613 nvlist_add_number(nvlr, "type", r->type); 614 nvlist_add_number(nvlr, "code", r->code); 615 nvlist_add_number(nvlr, "flags", r->flags); 616 nvlist_add_number(nvlr, "flagset", r->flagset); 617 nvlist_add_number(nvlr, "min_ttl", r->min_ttl); 618 nvlist_add_number(nvlr, "allow_opts", r->allow_opts); 619 nvlist_add_number(nvlr, "rt", r->rt); 620 nvlist_add_number(nvlr, "return_ttl", r->return_ttl); 621 nvlist_add_number(nvlr, "tos", r->tos); 622 nvlist_add_number(nvlr, "set_tos", r->set_tos); 623 nvlist_add_number(nvlr, "anchor_relative", r->anchor_relative); 624 nvlist_add_number(nvlr, "anchor_wildcard", r->anchor_wildcard); 625 626 nvlist_add_number(nvlr, "flush", r->flush); 627 628 nvlist_add_number(nvlr, "prio", r->prio); 629 set_prio[0] = r->set_prio[0]; 630 set_prio[1] = r->set_prio[1]; 631 nvlist_add_number_array(nvlr, "set_prio", set_prio, 2); 632 633 pfctl_nv_add_divert(nvlr, "divert", r); 634 635 nvlist_add_nvlist(nvl, "rule", nvlr); 636 nvlist_destroy(nvlr); 637 638 /* Now do the call. */ 639 nv.data = nvlist_pack(nvl, &nv.len); 640 nv.size = nv.len; 641 642 ret = ioctl(dev, DIOCADDRULENV, &nv); 643 644 free(nv.data); 645 nvlist_destroy(nvl); 646 647 return (ret); 648 } 649 650 int 651 pfctl_get_rule(int dev, u_int32_t nr, u_int32_t ticket, const char *anchor, 652 u_int32_t ruleset, struct pfctl_rule *rule, char *anchor_call) 653 { 654 return (pfctl_get_clear_rule(dev, nr, ticket, anchor, ruleset, rule, 655 anchor_call, false)); 656 } 657 658 int pfctl_get_clear_rule(int dev, u_int32_t nr, u_int32_t ticket, 659 const char *anchor, u_int32_t ruleset, struct pfctl_rule *rule, 660 char *anchor_call, bool clear) 661 { 662 struct pfioc_nv nv; 663 nvlist_t *nvl; 664 void *nvlpacked; 665 int ret; 666 667 nvl = nvlist_create(0); 668 if (nvl == 0) 669 return (ENOMEM); 670 671 nvlist_add_number(nvl, "nr", nr); 672 nvlist_add_number(nvl, "ticket", ticket); 673 nvlist_add_string(nvl, "anchor", anchor); 674 nvlist_add_number(nvl, "ruleset", ruleset); 675 676 if (clear) 677 nvlist_add_bool(nvl, "clear_counter", true); 678 679 nvlpacked = nvlist_pack(nvl, &nv.len); 680 if (nvlpacked == NULL) { 681 nvlist_destroy(nvl); 682 return (ENOMEM); 683 } 684 nv.data = malloc(8182); 685 nv.size = 8192; 686 assert(nv.len <= nv.size); 687 memcpy(nv.data, nvlpacked, nv.len); 688 nvlist_destroy(nvl); 689 nvl = NULL; 690 free(nvlpacked); 691 692 ret = ioctl(dev, DIOCGETRULENV, &nv); 693 if (ret != 0) { 694 free(nv.data); 695 return (ret); 696 } 697 698 nvl = nvlist_unpack(nv.data, nv.len, 0); 699 if (nvl == NULL) { 700 free(nv.data); 701 return (EIO); 702 } 703 704 pf_nvrule_to_rule(nvlist_get_nvlist(nvl, "rule"), rule); 705 706 if (anchor_call) 707 strlcpy(anchor_call, nvlist_get_string(nvl, "anchor_call"), 708 MAXPATHLEN); 709 710 free(nv.data); 711 nvlist_destroy(nvl); 712 713 return (0); 714 } 715 716 int 717 pfctl_set_keepcounters(int dev, bool keep) 718 { 719 struct pfioc_nv nv; 720 nvlist_t *nvl; 721 int ret; 722 723 nvl = nvlist_create(0); 724 725 nvlist_add_bool(nvl, "keep_counters", keep); 726 727 nv.data = nvlist_pack(nvl, &nv.len); 728 nv.size = nv.len; 729 730 nvlist_destroy(nvl); 731 732 ret = ioctl(dev, DIOCKEEPCOUNTERS, &nv); 733 734 free(nv.data); 735 return (ret); 736 } 737 738 static void 739 pfctl_nv_add_state_cmp(nvlist_t *nvl, const char *name, 740 const struct pfctl_state_cmp *cmp) 741 { 742 nvlist_t *nv; 743 744 nv = nvlist_create(0); 745 746 nvlist_add_number(nv, "id", cmp->id); 747 nvlist_add_number(nv, "creatorid", cmp->creatorid); 748 nvlist_add_number(nv, "direction", cmp->direction); 749 750 nvlist_add_nvlist(nvl, name, nv); 751 nvlist_destroy(nv); 752 } 753 754 static void 755 pf_state_key_export_to_state_key(struct pfctl_state_key *ps, 756 const struct pf_state_key_export *s) 757 { 758 bcopy(s->addr, ps->addr, sizeof(ps->addr[0]) * 2); 759 ps->port[0] = s->port[0]; 760 ps->port[1] = s->port[1]; 761 } 762 763 static void 764 pf_state_peer_export_to_state_peer(struct pfctl_state_peer *ps, 765 const struct pf_state_peer_export *s) 766 { 767 /* Ignore scrub. */ 768 ps->seqlo = s->seqlo; 769 ps->seqhi = s->seqhi; 770 ps->seqdiff = s->seqdiff; 771 /* Ignore max_win & mss */ 772 ps->state = s->state; 773 ps->wscale = s->wscale; 774 } 775 776 static void 777 pf_state_export_to_state(struct pfctl_state *ps, const struct pf_state_export *s) 778 { 779 assert(s->version >= PF_STATE_VERSION); 780 781 ps->id = s->id; 782 strlcpy(ps->ifname, s->ifname, sizeof(ps->ifname)); 783 strlcpy(ps->orig_ifname, s->orig_ifname, sizeof(ps->orig_ifname)); 784 pf_state_key_export_to_state_key(&ps->key[0], &s->key[0]); 785 pf_state_key_export_to_state_key(&ps->key[1], &s->key[1]); 786 pf_state_peer_export_to_state_peer(&ps->src, &s->src); 787 pf_state_peer_export_to_state_peer(&ps->dst, &s->dst); 788 bcopy(&s->rt_addr, &ps->rt_addr, sizeof(ps->rt_addr)); 789 ps->rule = ntohl(s->rule); 790 ps->anchor = ntohl(s->anchor); 791 ps->nat_rule = ntohl(s->nat_rule); 792 ps->creation = ntohl(s->creation); 793 ps->expire = ntohl(s->expire); 794 ps->packets[0] = s->packets[0]; 795 ps->packets[1] = s->packets[1]; 796 ps->bytes[0] = s->bytes[0]; 797 ps->bytes[1] = s->bytes[1]; 798 ps->creatorid = s->creatorid; 799 ps->key[0].proto = s->proto; 800 ps->key[1].proto = s->proto; 801 ps->key[0].af = s->af; 802 ps->key[1].af = s->af; 803 ps->direction = s->direction; 804 ps->state_flags = s->state_flags; 805 ps->sync_flags = s->sync_flags; 806 } 807 808 int 809 pfctl_get_states(int dev, struct pfctl_states *states) 810 { 811 struct pfioc_states_v2 ps; 812 struct pf_state_export *p; 813 char *inbuf = NULL, *newinbuf = NULL; 814 unsigned int len = 0; 815 int i, error; 816 817 bzero(&ps, sizeof(ps)); 818 ps.ps_req_version = PF_STATE_VERSION; 819 820 bzero(states, sizeof(*states)); 821 TAILQ_INIT(&states->states); 822 823 for (;;) { 824 ps.ps_len = len; 825 if (len) { 826 newinbuf = realloc(inbuf, len); 827 if (newinbuf == NULL) 828 return (ENOMEM); 829 ps.ps_buf = inbuf = newinbuf; 830 } 831 if ((error = ioctl(dev, DIOCGETSTATESV2, &ps)) < 0) { 832 free(inbuf); 833 return (error); 834 } 835 if (ps.ps_len + sizeof(struct pfioc_states_v2) < len) 836 break; 837 if (len == 0 && ps.ps_len == 0) 838 goto out; 839 if (len == 0 && ps.ps_len != 0) 840 len = ps.ps_len; 841 if (ps.ps_len == 0) 842 goto out; /* no states */ 843 len *= 2; 844 } 845 p = ps.ps_states; 846 847 for (i = 0; i < ps.ps_len; i += sizeof(*p), p++) { 848 struct pfctl_state *s = malloc(sizeof(*s)); 849 if (s == NULL) { 850 pfctl_free_states(states); 851 error = ENOMEM; 852 goto out; 853 } 854 855 pf_state_export_to_state(s, p); 856 TAILQ_INSERT_TAIL(&states->states, s, entry); 857 } 858 859 out: 860 free(inbuf); 861 return (error); 862 } 863 864 void 865 pfctl_free_states(struct pfctl_states *states) 866 { 867 struct pfctl_state *s, *tmp; 868 869 TAILQ_FOREACH_SAFE(s, &states->states, entry, tmp) { 870 free(s); 871 } 872 873 bzero(states, sizeof(*states)); 874 } 875 876 static int 877 _pfctl_clear_states(int dev, const struct pfctl_kill *kill, 878 unsigned int *killed, uint64_t ioctlval) 879 { 880 struct pfioc_nv nv; 881 nvlist_t *nvl; 882 int ret; 883 884 nvl = nvlist_create(0); 885 886 pfctl_nv_add_state_cmp(nvl, "cmp", &kill->cmp); 887 nvlist_add_number(nvl, "af", kill->af); 888 nvlist_add_number(nvl, "proto", kill->proto); 889 pfctl_nv_add_rule_addr(nvl, "src", &kill->src); 890 pfctl_nv_add_rule_addr(nvl, "dst", &kill->dst); 891 pfctl_nv_add_rule_addr(nvl, "rt_addr", &kill->rt_addr); 892 nvlist_add_string(nvl, "ifname", kill->ifname); 893 nvlist_add_string(nvl, "label", kill->label); 894 nvlist_add_bool(nvl, "kill_match", kill->kill_match); 895 896 nv.data = nvlist_pack(nvl, &nv.len); 897 nv.size = nv.len; 898 nvlist_destroy(nvl); 899 nvl = NULL; 900 901 ret = ioctl(dev, ioctlval, &nv); 902 if (ret != 0) { 903 free(nv.data); 904 return (ret); 905 } 906 907 nvl = nvlist_unpack(nv.data, nv.len, 0); 908 if (nvl == NULL) { 909 free(nv.data); 910 return (EIO); 911 } 912 913 if (killed) 914 *killed = nvlist_get_number(nvl, "killed"); 915 916 nvlist_destroy(nvl); 917 free(nv.data); 918 919 return (ret); 920 } 921 922 int 923 pfctl_clear_states(int dev, const struct pfctl_kill *kill, 924 unsigned int *killed) 925 { 926 return (_pfctl_clear_states(dev, kill, killed, DIOCCLRSTATESNV)); 927 } 928 929 int 930 pfctl_kill_states(int dev, const struct pfctl_kill *kill, unsigned int *killed) 931 { 932 return (_pfctl_clear_states(dev, kill, killed, DIOCKILLSTATESNV)); 933 } 934 935 int 936 pfctl_set_syncookies(int dev, const struct pfctl_syncookies *s) 937 { 938 struct pfioc_nv nv; 939 nvlist_t *nvl; 940 int ret; 941 942 nvl = nvlist_create(0); 943 944 nvlist_add_bool(nvl, "enabled", s->mode != PFCTL_SYNCOOKIES_NEVER); 945 nvlist_add_bool(nvl, "adaptive", false); /* XXX TODO */ 946 947 nv.data = nvlist_pack(nvl, &nv.len); 948 nv.size = nv.len; 949 nvlist_destroy(nvl); 950 nvl = NULL; 951 952 ret = ioctl(dev, DIOCSETSYNCOOKIES, &nv); 953 954 free(nv.data); 955 return (ret); 956 } 957 958 int 959 pfctl_get_syncookies(int dev, struct pfctl_syncookies *s) 960 { 961 struct pfioc_nv nv; 962 nvlist_t *nvl; 963 bool enabled, adaptive; 964 965 bzero(s, sizeof(*s)); 966 967 nv.data = malloc(128); 968 nv.len = nv.size = 128; 969 970 if (ioctl(dev, DIOCGETSYNCOOKIES, &nv)) { 971 free(nv.data); 972 return (errno); 973 } 974 975 nvl = nvlist_unpack(nv.data, nv.len, 0); 976 free(nv.data); 977 if (nvl == NULL) { 978 return (EIO); 979 } 980 981 enabled = nvlist_get_bool(nvl, "enabled"); 982 adaptive = nvlist_get_bool(nvl, "adaptive"); 983 984 s->mode = enabled ? PFCTL_SYNCOOKIES_ALWAYS : PFCTL_SYNCOOKIES_NEVER; 985 986 nvlist_destroy(nvl); 987 988 return (0); 989 } 990