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_nv_add_addr(nvlist_t *nvparent, const char *name, 126 const struct pf_addr *addr) 127 { 128 nvlist_t *nvl = nvlist_create(0); 129 130 nvlist_add_binary(nvl, "addr", addr, sizeof(*addr)); 131 132 nvlist_add_nvlist(nvparent, name, nvl); 133 } 134 135 static void 136 pf_nvaddr_to_addr(const nvlist_t *nvl, struct pf_addr *addr) 137 { 138 size_t len; 139 const void *data; 140 141 data = nvlist_get_binary(nvl, "addr", &len); 142 assert(len == sizeof(struct pf_addr)); 143 memcpy(addr, data, len); 144 } 145 146 static void 147 pfctl_nv_add_addr_wrap(nvlist_t *nvparent, const char *name, 148 const struct pf_addr_wrap *addr) 149 { 150 nvlist_t *nvl = nvlist_create(0); 151 152 nvlist_add_number(nvl, "type", addr->type); 153 nvlist_add_number(nvl, "iflags", addr->iflags); 154 if (addr->type == PF_ADDR_DYNIFTL) 155 nvlist_add_string(nvl, "ifname", addr->v.ifname); 156 if (addr->type == PF_ADDR_TABLE) 157 nvlist_add_string(nvl, "tblname", addr->v.tblname); 158 pfctl_nv_add_addr(nvl, "addr", &addr->v.a.addr); 159 pfctl_nv_add_addr(nvl, "mask", &addr->v.a.mask); 160 161 nvlist_add_nvlist(nvparent, name, nvl); 162 } 163 164 static void 165 pf_nvaddr_wrap_to_addr_wrap(const nvlist_t *nvl, struct pf_addr_wrap *addr) 166 { 167 addr->type = nvlist_get_number(nvl, "type"); 168 addr->iflags = nvlist_get_number(nvl, "iflags"); 169 if (addr->type == PF_ADDR_DYNIFTL) 170 strlcpy(addr->v.ifname, nvlist_get_string(nvl, "ifname"), 171 IFNAMSIZ); 172 if (addr->type == PF_ADDR_TABLE) 173 strlcpy(addr->v.tblname, nvlist_get_string(nvl, "tblname"), 174 PF_TABLE_NAME_SIZE); 175 176 pf_nvaddr_to_addr(nvlist_get_nvlist(nvl, "addr"), &addr->v.a.addr); 177 pf_nvaddr_to_addr(nvlist_get_nvlist(nvl, "mask"), &addr->v.a.mask); 178 } 179 180 static void 181 pfctl_nv_add_rule_addr(nvlist_t *nvparent, const char *name, 182 const struct pf_rule_addr *addr) 183 { 184 u_int64_t ports[2]; 185 nvlist_t *nvl = nvlist_create(0); 186 187 pfctl_nv_add_addr_wrap(nvl, "addr", &addr->addr); 188 ports[0] = addr->port[0]; 189 ports[1] = addr->port[1]; 190 nvlist_add_number_array(nvl, "port", ports, 2); 191 nvlist_add_number(nvl, "neg", addr->neg); 192 nvlist_add_number(nvl, "port_op", addr->port_op); 193 194 nvlist_add_nvlist(nvparent, name, nvl); 195 } 196 197 static void 198 pf_nvrule_addr_to_rule_addr(const nvlist_t *nvl, struct pf_rule_addr *addr) 199 { 200 pf_nvaddr_wrap_to_addr_wrap(nvlist_get_nvlist(nvl, "addr"), &addr->addr); 201 202 pf_nvuint_16_array(nvl, "port", 2, addr->port, NULL); 203 addr->neg = nvlist_get_number(nvl, "neg"); 204 addr->port_op = nvlist_get_number(nvl, "port_op"); 205 } 206 207 static void 208 pfctl_nv_add_mape(nvlist_t *nvparent, const char *name, 209 const struct pf_mape_portset *mape) 210 { 211 nvlist_t *nvl = nvlist_create(0); 212 213 nvlist_add_number(nvl, "offset", mape->offset); 214 nvlist_add_number(nvl, "psidlen", mape->psidlen); 215 nvlist_add_number(nvl, "psid", mape->psid); 216 nvlist_add_nvlist(nvparent, name, nvl); 217 } 218 219 static void 220 pfctl_nv_add_pool(nvlist_t *nvparent, const char *name, 221 const struct pfctl_pool *pool) 222 { 223 u_int64_t ports[2]; 224 nvlist_t *nvl = nvlist_create(0); 225 226 nvlist_add_binary(nvl, "key", &pool->key, sizeof(pool->key)); 227 pfctl_nv_add_addr(nvl, "counter", &pool->counter); 228 nvlist_add_number(nvl, "tblidx", pool->tblidx); 229 230 ports[0] = pool->proxy_port[0]; 231 ports[1] = pool->proxy_port[1]; 232 nvlist_add_number_array(nvl, "proxy_port", ports, 2); 233 nvlist_add_number(nvl, "opts", pool->opts); 234 pfctl_nv_add_mape(nvl, "mape", &pool->mape); 235 236 nvlist_add_nvlist(nvparent, name, nvl); 237 } 238 239 static void 240 pf_nvmape_to_mape(const nvlist_t *nvl, struct pf_mape_portset *mape) 241 { 242 mape->offset = nvlist_get_number(nvl, "offset"); 243 mape->psidlen = nvlist_get_number(nvl, "psidlen"); 244 mape->psid = nvlist_get_number(nvl, "psid"); 245 } 246 247 static void 248 pf_nvpool_to_pool(const nvlist_t *nvl, struct pfctl_pool *pool) 249 { 250 size_t len; 251 const void *data; 252 253 data = nvlist_get_binary(nvl, "key", &len); 254 assert(len == sizeof(pool->key)); 255 memcpy(&pool->key, data, len); 256 257 pf_nvaddr_to_addr(nvlist_get_nvlist(nvl, "counter"), &pool->counter); 258 259 pool->tblidx = nvlist_get_number(nvl, "tblidx"); 260 pf_nvuint_16_array(nvl, "proxy_port", 2, pool->proxy_port, NULL); 261 pool->opts = nvlist_get_number(nvl, "opts"); 262 263 if (nvlist_exists_nvlist(nvl, "mape")) 264 pf_nvmape_to_mape(nvlist_get_nvlist(nvl, "mape"), &pool->mape); 265 } 266 267 static void 268 pfctl_nv_add_uid(nvlist_t *nvparent, const char *name, 269 const struct pf_rule_uid *uid) 270 { 271 u_int64_t uids[2]; 272 nvlist_t *nvl = nvlist_create(0); 273 274 uids[0] = uid->uid[0]; 275 uids[1] = uid->uid[1]; 276 nvlist_add_number_array(nvl, "uid", uids, 2); 277 nvlist_add_number(nvl, "op", uid->op); 278 279 nvlist_add_nvlist(nvparent, name, nvl); 280 } 281 282 static void 283 pf_nvrule_uid_to_rule_uid(const nvlist_t *nvl, struct pf_rule_uid *uid) 284 { 285 pf_nvuint_32_array(nvl, "uid", 2, uid->uid, NULL); 286 uid->op = nvlist_get_number(nvl, "op"); 287 } 288 289 static void 290 pfctl_nv_add_divert(nvlist_t *nvparent, const char *name, 291 const struct pfctl_rule *r) 292 { 293 nvlist_t *nvl = nvlist_create(0); 294 295 pfctl_nv_add_addr(nvl, "addr", &r->divert.addr); 296 nvlist_add_number(nvl, "port", r->divert.port); 297 298 nvlist_add_nvlist(nvparent, name, nvl); 299 } 300 301 static void 302 pf_nvdivert_to_divert(const nvlist_t *nvl, struct pfctl_rule *rule) 303 { 304 pf_nvaddr_to_addr(nvlist_get_nvlist(nvl, "addr"), &rule->divert.addr); 305 rule->divert.port = nvlist_get_number(nvl, "port"); 306 } 307 308 static void 309 pf_nvrule_to_rule(const nvlist_t *nvl, struct pfctl_rule *rule) 310 { 311 const uint64_t *skip; 312 const char *const *labels; 313 size_t skipcount, labelcount; 314 315 rule->nr = nvlist_get_number(nvl, "nr"); 316 317 pf_nvrule_addr_to_rule_addr(nvlist_get_nvlist(nvl, "src"), &rule->src); 318 pf_nvrule_addr_to_rule_addr(nvlist_get_nvlist(nvl, "dst"), &rule->dst); 319 320 skip = nvlist_get_number_array(nvl, "skip", &skipcount); 321 assert(skip); 322 assert(skipcount == PF_SKIP_COUNT); 323 for (int i = 0; i < PF_SKIP_COUNT; i++) 324 rule->skip[i].nr = skip[i]; 325 326 labels = nvlist_get_string_array(nvl, "labels", &labelcount); 327 assert(labelcount <= PF_RULE_MAX_LABEL_COUNT); 328 for (size_t i = 0; i < labelcount; i++) 329 strlcpy(rule->label[i], labels[i], PF_RULE_LABEL_SIZE); 330 strlcpy(rule->ifname, nvlist_get_string(nvl, "ifname"), IFNAMSIZ); 331 strlcpy(rule->qname, nvlist_get_string(nvl, "qname"), PF_QNAME_SIZE); 332 strlcpy(rule->pqname, nvlist_get_string(nvl, "pqname"), PF_QNAME_SIZE); 333 strlcpy(rule->tagname, nvlist_get_string(nvl, "tagname"), 334 PF_TAG_NAME_SIZE); 335 strlcpy(rule->match_tagname, nvlist_get_string(nvl, "match_tagname"), 336 PF_TAG_NAME_SIZE); 337 338 strlcpy(rule->overload_tblname, nvlist_get_string(nvl, "overload_tblname"), 339 PF_TABLE_NAME_SIZE); 340 341 pf_nvpool_to_pool(nvlist_get_nvlist(nvl, "rpool"), &rule->rpool); 342 343 rule->evaluations = nvlist_get_number(nvl, "evaluations"); 344 pf_nvuint_64_array(nvl, "packets", 2, rule->packets, NULL); 345 pf_nvuint_64_array(nvl, "bytes", 2, rule->bytes, NULL); 346 347 rule->os_fingerprint = nvlist_get_number(nvl, "os_fingerprint"); 348 349 rule->rtableid = nvlist_get_number(nvl, "rtableid"); 350 pf_nvuint_32_array(nvl, "timeout", PFTM_MAX, rule->timeout, NULL); 351 rule->max_states = nvlist_get_number(nvl, "max_states"); 352 rule->max_src_nodes = nvlist_get_number(nvl, "max_src_nodes"); 353 rule->max_src_states = nvlist_get_number(nvl, "max_src_states"); 354 rule->max_src_conn = nvlist_get_number(nvl, "max_src_conn"); 355 rule->max_src_conn_rate.limit = 356 nvlist_get_number(nvl, "max_src_conn_rate.limit"); 357 rule->max_src_conn_rate.seconds = 358 nvlist_get_number(nvl, "max_src_conn_rate.seconds"); 359 rule->qid = nvlist_get_number(nvl, "qid"); 360 rule->pqid = nvlist_get_number(nvl, "pqid"); 361 rule->prob = nvlist_get_number(nvl, "prob"); 362 rule->cuid = nvlist_get_number(nvl, "cuid"); 363 rule->cpid = nvlist_get_number(nvl, "cpid"); 364 365 rule->return_icmp = nvlist_get_number(nvl, "return_icmp"); 366 rule->return_icmp6 = nvlist_get_number(nvl, "return_icmp6"); 367 rule->max_mss = nvlist_get_number(nvl, "max_mss"); 368 rule->scrub_flags = nvlist_get_number(nvl, "scrub_flags"); 369 370 pf_nvrule_uid_to_rule_uid(nvlist_get_nvlist(nvl, "uid"), &rule->uid); 371 pf_nvrule_uid_to_rule_uid(nvlist_get_nvlist(nvl, "gid"), 372 (struct pf_rule_uid *)&rule->gid); 373 374 rule->rule_flag = nvlist_get_number(nvl, "rule_flag"); 375 rule->action = nvlist_get_number(nvl, "action"); 376 rule->direction = nvlist_get_number(nvl, "direction"); 377 rule->log = nvlist_get_number(nvl, "log"); 378 rule->logif = nvlist_get_number(nvl, "logif"); 379 rule->quick = nvlist_get_number(nvl, "quick"); 380 rule->ifnot = nvlist_get_number(nvl, "ifnot"); 381 rule->match_tag_not = nvlist_get_number(nvl, "match_tag_not"); 382 rule->natpass = nvlist_get_number(nvl, "natpass"); 383 384 rule->keep_state = nvlist_get_number(nvl, "keep_state"); 385 rule->af = nvlist_get_number(nvl, "af"); 386 rule->proto = nvlist_get_number(nvl, "proto"); 387 rule->type = nvlist_get_number(nvl, "type"); 388 rule->code = nvlist_get_number(nvl, "code"); 389 rule->flags = nvlist_get_number(nvl, "flags"); 390 rule->flagset = nvlist_get_number(nvl, "flagset"); 391 rule->min_ttl = nvlist_get_number(nvl, "min_ttl"); 392 rule->allow_opts = nvlist_get_number(nvl, "allow_opts"); 393 rule->rt = nvlist_get_number(nvl, "rt"); 394 rule->return_ttl = nvlist_get_number(nvl, "return_ttl"); 395 rule->tos = nvlist_get_number(nvl, "tos"); 396 rule->set_tos = nvlist_get_number(nvl, "set_tos"); 397 rule->anchor_relative = nvlist_get_number(nvl, "anchor_relative"); 398 rule->anchor_wildcard = nvlist_get_number(nvl, "anchor_wildcard"); 399 400 rule->flush = nvlist_get_number(nvl, "flush"); 401 rule->prio = nvlist_get_number(nvl, "prio"); 402 pf_nvuint_8_array(nvl, "set_prio", 2, rule->set_prio, NULL); 403 404 pf_nvdivert_to_divert(nvlist_get_nvlist(nvl, "divert"), rule); 405 406 rule->states_cur = nvlist_get_number(nvl, "states_cur"); 407 rule->states_tot = nvlist_get_number(nvl, "states_tot"); 408 rule->src_nodes = nvlist_get_number(nvl, "src_nodes"); 409 } 410 411 int 412 pfctl_add_rule(int dev, const struct pfctl_rule *r, const char *anchor, 413 const char *anchor_call, u_int32_t ticket, u_int32_t pool_ticket) 414 { 415 struct pfioc_nv nv; 416 u_int64_t timeouts[PFTM_MAX]; 417 u_int64_t set_prio[2]; 418 nvlist_t *nvl, *nvlr; 419 size_t labelcount; 420 int ret; 421 422 nvl = nvlist_create(0); 423 nvlr = nvlist_create(0); 424 425 nvlist_add_number(nvl, "ticket", ticket); 426 nvlist_add_number(nvl, "pool_ticket", pool_ticket); 427 nvlist_add_string(nvl, "anchor", anchor); 428 nvlist_add_string(nvl, "anchor_call", anchor_call); 429 430 nvlist_add_number(nvlr, "nr", r->nr); 431 pfctl_nv_add_rule_addr(nvlr, "src", &r->src); 432 pfctl_nv_add_rule_addr(nvlr, "dst", &r->dst); 433 434 labelcount = 0; 435 while (r->label[labelcount][0] != 0 && 436 labelcount < PF_RULE_MAX_LABEL_COUNT) { 437 nvlist_append_string_array(nvlr, "labels", 438 r->label[labelcount]); 439 labelcount++; 440 } 441 442 nvlist_add_string(nvlr, "ifname", r->ifname); 443 nvlist_add_string(nvlr, "qname", r->qname); 444 nvlist_add_string(nvlr, "pqname", r->pqname); 445 nvlist_add_string(nvlr, "tagname", r->tagname); 446 nvlist_add_string(nvlr, "match_tagname", r->match_tagname); 447 nvlist_add_string(nvlr, "overload_tblname", r->overload_tblname); 448 449 pfctl_nv_add_pool(nvlr, "rpool", &r->rpool); 450 451 nvlist_add_number(nvlr, "os_fingerprint", r->os_fingerprint); 452 453 nvlist_add_number(nvlr, "rtableid", r->rtableid); 454 for (int i = 0; i < PFTM_MAX; i++) 455 timeouts[i] = r->timeout[i]; 456 nvlist_add_number_array(nvlr, "timeout", timeouts, PFTM_MAX); 457 nvlist_add_number(nvlr, "max_states", r->max_states); 458 nvlist_add_number(nvlr, "max_src_nodes", r->max_src_nodes); 459 nvlist_add_number(nvlr, "max_src_states", r->max_src_states); 460 nvlist_add_number(nvlr, "max_src_conn", r->max_src_conn); 461 nvlist_add_number(nvlr, "max_src_conn_rate.limit", 462 r->max_src_conn_rate.limit); 463 nvlist_add_number(nvlr, "max_src_conn_rate.seconds", 464 r->max_src_conn_rate.seconds); 465 nvlist_add_number(nvlr, "prob", r->prob); 466 nvlist_add_number(nvlr, "cuid", r->cuid); 467 nvlist_add_number(nvlr, "cpid", r->cpid); 468 469 nvlist_add_number(nvlr, "return_icmp", r->return_icmp); 470 nvlist_add_number(nvlr, "return_icmp6", r->return_icmp6); 471 472 nvlist_add_number(nvlr, "max_mss", r->max_mss); 473 nvlist_add_number(nvlr, "scrub_flags", r->scrub_flags); 474 475 pfctl_nv_add_uid(nvlr, "uid", &r->uid); 476 pfctl_nv_add_uid(nvlr, "gid", (const struct pf_rule_uid *)&r->gid); 477 478 nvlist_add_number(nvlr, "rule_flag", r->rule_flag); 479 nvlist_add_number(nvlr, "action", r->action); 480 nvlist_add_number(nvlr, "direction", r->direction); 481 nvlist_add_number(nvlr, "log", r->log); 482 nvlist_add_number(nvlr, "logif", r->logif); 483 nvlist_add_number(nvlr, "quick", r->quick); 484 nvlist_add_number(nvlr, "ifnot", r->ifnot); 485 nvlist_add_number(nvlr, "match_tag_not", r->match_tag_not); 486 nvlist_add_number(nvlr, "natpass", r->natpass); 487 488 nvlist_add_number(nvlr, "keep_state", r->keep_state); 489 nvlist_add_number(nvlr, "af", r->af); 490 nvlist_add_number(nvlr, "proto", r->proto); 491 nvlist_add_number(nvlr, "type", r->type); 492 nvlist_add_number(nvlr, "code", r->code); 493 nvlist_add_number(nvlr, "flags", r->flags); 494 nvlist_add_number(nvlr, "flagset", r->flagset); 495 nvlist_add_number(nvlr, "min_ttl", r->min_ttl); 496 nvlist_add_number(nvlr, "allow_opts", r->allow_opts); 497 nvlist_add_number(nvlr, "rt", r->rt); 498 nvlist_add_number(nvlr, "return_ttl", r->return_ttl); 499 nvlist_add_number(nvlr, "tos", r->tos); 500 nvlist_add_number(nvlr, "set_tos", r->set_tos); 501 nvlist_add_number(nvlr, "anchor_relative", r->anchor_relative); 502 nvlist_add_number(nvlr, "anchor_wildcard", r->anchor_wildcard); 503 504 nvlist_add_number(nvlr, "flush", r->flush); 505 506 nvlist_add_number(nvlr, "prio", r->prio); 507 set_prio[0] = r->set_prio[0]; 508 set_prio[1] = r->set_prio[1]; 509 nvlist_add_number_array(nvlr, "set_prio", set_prio, 2); 510 511 pfctl_nv_add_divert(nvlr, "divert", r); 512 513 nvlist_add_nvlist(nvl, "rule", nvlr); 514 515 /* Now do the call. */ 516 nv.data = nvlist_pack(nvl, &nv.len); 517 nv.size = nv.len; 518 519 ret = ioctl(dev, DIOCADDRULENV, &nv); 520 521 free(nv.data); 522 nvlist_destroy(nvl); 523 524 return (ret); 525 } 526 527 int 528 pfctl_get_rule(int dev, u_int32_t nr, u_int32_t ticket, const char *anchor, 529 u_int32_t ruleset, struct pfctl_rule *rule, char *anchor_call) 530 { 531 return (pfctl_get_clear_rule(dev, nr, ticket, anchor, ruleset, rule, 532 anchor_call, false)); 533 } 534 535 int pfctl_get_clear_rule(int dev, u_int32_t nr, u_int32_t ticket, 536 const char *anchor, u_int32_t ruleset, struct pfctl_rule *rule, 537 char *anchor_call, bool clear) 538 { 539 struct pfioc_nv nv; 540 nvlist_t *nvl; 541 void *nvlpacked; 542 int ret; 543 544 nvl = nvlist_create(0); 545 if (nvl == 0) 546 return (ENOMEM); 547 548 nvlist_add_number(nvl, "nr", nr); 549 nvlist_add_number(nvl, "ticket", ticket); 550 nvlist_add_string(nvl, "anchor", anchor); 551 nvlist_add_number(nvl, "ruleset", ruleset); 552 553 if (clear) 554 nvlist_add_bool(nvl, "clear_counter", true); 555 556 nvlpacked = nvlist_pack(nvl, &nv.len); 557 if (nvlpacked == NULL) { 558 nvlist_destroy(nvl); 559 return (ENOMEM); 560 } 561 nv.data = malloc(8182); 562 nv.size = 8192; 563 assert(nv.len <= nv.size); 564 memcpy(nv.data, nvlpacked, nv.len); 565 nvlist_destroy(nvl); 566 nvl = NULL; 567 free(nvlpacked); 568 569 ret = ioctl(dev, DIOCGETRULENV, &nv); 570 if (ret != 0) { 571 free(nv.data); 572 return (ret); 573 } 574 575 nvl = nvlist_unpack(nv.data, nv.len, 0); 576 if (nvl == NULL) { 577 free(nv.data); 578 return (EIO); 579 } 580 581 pf_nvrule_to_rule(nvlist_get_nvlist(nvl, "rule"), rule); 582 583 if (anchor_call) 584 strlcpy(anchor_call, nvlist_get_string(nvl, "anchor_call"), 585 MAXPATHLEN); 586 587 free(nv.data); 588 nvlist_destroy(nvl); 589 590 return (0); 591 } 592 593 int 594 pfctl_set_keepcounters(int dev, bool keep) 595 { 596 struct pfioc_nv nv; 597 nvlist_t *nvl; 598 int ret; 599 600 nvl = nvlist_create(0); 601 602 nvlist_add_bool(nvl, "keep_counters", keep); 603 604 nv.data = nvlist_pack(nvl, &nv.len); 605 nv.size = nv.len; 606 607 nvlist_destroy(nvl); 608 609 ret = ioctl(dev, DIOCKEEPCOUNTERS, &nv); 610 611 free(nv.data); 612 return (ret); 613 } 614 615 static void 616 pfctl_nv_add_state_cmp(nvlist_t *nvl, const char *name, 617 const struct pfctl_state_cmp *cmp) 618 { 619 nvlist_t *nv; 620 621 nv = nvlist_create(0); 622 623 nvlist_add_number(nv, "id", cmp->id); 624 nvlist_add_number(nv, "creatorid", cmp->creatorid); 625 nvlist_add_number(nv, "direction", cmp->direction); 626 627 nvlist_add_nvlist(nvl, name, nv); 628 } 629 630 static int 631 _pfctl_clear_states(int dev, const struct pfctl_kill *kill, 632 unsigned int *killed, uint64_t ioctlval) 633 { 634 struct pfioc_nv nv; 635 nvlist_t *nvl; 636 int ret; 637 638 nvl = nvlist_create(0); 639 640 pfctl_nv_add_state_cmp(nvl, "cmp", &kill->cmp); 641 nvlist_add_number(nvl, "af", kill->af); 642 nvlist_add_number(nvl, "proto", kill->proto); 643 pfctl_nv_add_rule_addr(nvl, "src", &kill->src); 644 pfctl_nv_add_rule_addr(nvl, "dst", &kill->dst); 645 pfctl_nv_add_rule_addr(nvl, "rt_addr", &kill->rt_addr); 646 nvlist_add_string(nvl, "ifname", kill->ifname); 647 nvlist_add_string(nvl, "label", kill->label); 648 nvlist_add_bool(nvl, "kill_match", kill->kill_match); 649 650 nv.data = nvlist_pack(nvl, &nv.len); 651 nv.size = nv.len; 652 nvlist_destroy(nvl); 653 nvl = NULL; 654 655 ret = ioctl(dev, ioctlval, &nv); 656 if (ret != 0) { 657 free(nv.data); 658 return (ret); 659 } 660 661 nvl = nvlist_unpack(nv.data, nv.len, 0); 662 if (nvl == NULL) { 663 free(nv.data); 664 return (EIO); 665 } 666 667 if (killed) 668 *killed = nvlist_get_number(nvl, "killed"); 669 670 nvlist_destroy(nvl); 671 free(nv.data); 672 673 return (ret); 674 } 675 676 int 677 pfctl_clear_states(int dev, const struct pfctl_kill *kill, 678 unsigned int *killed) 679 { 680 return (_pfctl_clear_states(dev, kill, killed, DIOCCLRSTATESNV)); 681 } 682 683 int 684 pfctl_kill_states(int dev, const struct pfctl_kill *kill, unsigned int *killed) 685 { 686 return (_pfctl_clear_states(dev, kill, killed, DIOCKILLSTATESNV)); 687 } 688