npf.c revision 1.13
1 /* $NetBSD: npf.c,v 1.13 2012/09/16 13:47:42 rmind Exp $ */ 2 3 /*- 4 * Copyright (c) 2010-2012 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This material is based upon work partially supported by The 8 * NetBSD Foundation under a contract with Mindaugas Rasiukevicius. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 #include <sys/cdefs.h> 33 __KERNEL_RCSID(0, "$NetBSD: npf.c,v 1.13 2012/09/16 13:47:42 rmind Exp $"); 34 35 #include <sys/types.h> 36 #include <netinet/in_systm.h> 37 #include <netinet/in.h> 38 #include <net/if.h> 39 #include <prop/proplib.h> 40 41 #include <stdlib.h> 42 #include <string.h> 43 #include <assert.h> 44 #include <errno.h> 45 #include <err.h> 46 47 #define _NPF_PRIVATE 48 #include "npf.h" 49 50 struct nl_config { 51 /* Rules, translations, tables, procedures. */ 52 prop_dictionary_t ncf_dict; 53 prop_array_t ncf_rules_list; 54 prop_array_t ncf_rproc_list; 55 prop_array_t ncf_table_list; 56 prop_array_t ncf_nat_list; 57 /* Priority counters. */ 58 pri_t ncf_rule_pri; 59 pri_t ncf_nat_pri; 60 /* Debug information. */ 61 prop_dictionary_t ncf_debug; 62 /* Error report. */ 63 prop_dictionary_t ncf_err; 64 /* Custom file to externalise property-list. */ 65 const char * ncf_plist; 66 bool ncf_flush; 67 }; 68 69 struct nl_rule { 70 prop_dictionary_t nrl_dict; 71 }; 72 73 struct nl_rproc { 74 prop_dictionary_t nrp_dict; 75 }; 76 77 struct nl_table { 78 prop_dictionary_t ntl_dict; 79 }; 80 81 struct nl_ext { 82 const char * nxt_name; 83 prop_dictionary_t nxt_dict; 84 }; 85 86 /* 87 * CONFIGURATION INTERFACE. 88 */ 89 90 nl_config_t * 91 npf_config_create(void) 92 { 93 nl_config_t *ncf; 94 95 ncf = calloc(1, sizeof(*ncf)); 96 if (ncf == NULL) { 97 return NULL; 98 } 99 ncf->ncf_rules_list = prop_array_create(); 100 ncf->ncf_rproc_list = prop_array_create(); 101 ncf->ncf_table_list = prop_array_create(); 102 ncf->ncf_nat_list = prop_array_create(); 103 104 ncf->ncf_rule_pri = 1; 105 ncf->ncf_nat_pri = 1; 106 107 ncf->ncf_plist = NULL; 108 ncf->ncf_flush = false; 109 110 return ncf; 111 } 112 113 int 114 npf_config_submit(nl_config_t *ncf, int fd) 115 { 116 const char *plist = ncf->ncf_plist; 117 prop_dictionary_t npf_dict; 118 int error = 0; 119 120 npf_dict = prop_dictionary_create(); 121 if (npf_dict == NULL) { 122 return ENOMEM; 123 } 124 if (ncf->ncf_debug) { 125 prop_dictionary_set(npf_dict, "debug", ncf->ncf_debug); 126 } 127 prop_dictionary_set(npf_dict, "rules", ncf->ncf_rules_list); 128 prop_dictionary_set(npf_dict, "rprocs", ncf->ncf_rproc_list); 129 prop_dictionary_set(npf_dict, "tables", ncf->ncf_table_list); 130 prop_dictionary_set(npf_dict, "translation", ncf->ncf_nat_list); 131 prop_dictionary_set_bool(npf_dict, "flush", ncf->ncf_flush); 132 133 if (plist) { 134 if (!prop_dictionary_externalize_to_file(npf_dict, plist)) { 135 error = errno; 136 } 137 prop_object_release(npf_dict); 138 return error; 139 } 140 141 error = prop_dictionary_sendrecv_ioctl(npf_dict, fd, 142 IOC_NPF_RELOAD, &ncf->ncf_err); 143 if (error) { 144 prop_object_release(npf_dict); 145 assert(ncf->ncf_err == NULL); 146 return error; 147 } 148 149 prop_dictionary_get_int32(ncf->ncf_err, "errno", &error); 150 prop_object_release(npf_dict); 151 return error; 152 } 153 154 nl_config_t * 155 npf_config_retrieve(int fd, bool *active, bool *loaded) 156 { 157 prop_dictionary_t npf_dict; 158 nl_config_t *ncf; 159 int error; 160 161 error = prop_dictionary_recv_ioctl(fd, IOC_NPF_GETCONF, &npf_dict); 162 if (error) { 163 return NULL; 164 } 165 ncf = calloc(1, sizeof(*ncf)); 166 if (ncf == NULL) { 167 prop_object_release(npf_dict); 168 return NULL; 169 } 170 ncf->ncf_dict = npf_dict; 171 ncf->ncf_rules_list = prop_dictionary_get(npf_dict, "rules"); 172 ncf->ncf_rproc_list = prop_dictionary_get(npf_dict, "rprocs"); 173 ncf->ncf_table_list = prop_dictionary_get(npf_dict, "tables"); 174 ncf->ncf_nat_list = prop_dictionary_get(npf_dict, "translation"); 175 176 prop_dictionary_get_bool(npf_dict, "active", active); 177 *loaded = (ncf->ncf_rules_list != NULL); 178 return ncf; 179 } 180 181 int 182 npf_config_flush(int fd) 183 { 184 nl_config_t *ncf; 185 int error; 186 187 ncf = npf_config_create(); 188 if (ncf == NULL) { 189 return ENOMEM; 190 } 191 ncf->ncf_flush = true; 192 error = npf_config_submit(ncf, fd); 193 npf_config_destroy(ncf); 194 return error; 195 } 196 197 void 198 _npf_config_error(nl_config_t *ncf, nl_error_t *ne) 199 { 200 memset(ne, 0, sizeof(*ne)); 201 prop_dictionary_get_int32(ncf->ncf_err, "id", &ne->ne_id); 202 prop_dictionary_get_cstring(ncf->ncf_err, 203 "source-file", &ne->ne_source_file); 204 prop_dictionary_get_uint32(ncf->ncf_err, 205 "source-line", &ne->ne_source_line); 206 prop_dictionary_get_int32(ncf->ncf_err, 207 "ncode-error", &ne->ne_ncode_error); 208 prop_dictionary_get_int32(ncf->ncf_err, 209 "ncode-errat", &ne->ne_ncode_errat); 210 } 211 212 void 213 npf_config_destroy(nl_config_t *ncf) 214 { 215 216 if (ncf->ncf_dict == NULL) { 217 prop_object_release(ncf->ncf_rules_list); 218 prop_object_release(ncf->ncf_rproc_list); 219 prop_object_release(ncf->ncf_table_list); 220 prop_object_release(ncf->ncf_nat_list); 221 } else { 222 prop_object_release(ncf->ncf_dict); 223 } 224 if (ncf->ncf_err) { 225 prop_object_release(ncf->ncf_err); 226 } 227 if (ncf->ncf_debug) { 228 prop_object_release(ncf->ncf_debug); 229 } 230 free(ncf); 231 } 232 233 void 234 _npf_config_setsubmit(nl_config_t *ncf, const char *plist_file) 235 { 236 237 ncf->ncf_plist = plist_file; 238 } 239 240 static bool 241 _npf_prop_array_lookup(prop_array_t array, const char *key, const char *name) 242 { 243 prop_dictionary_t dict; 244 prop_object_iterator_t it; 245 246 it = prop_array_iterator(array); 247 while ((dict = prop_object_iterator_next(it)) != NULL) { 248 const char *lname; 249 prop_dictionary_get_cstring_nocopy(dict, key, &lname); 250 if (strcmp(name, lname) == 0) 251 break; 252 } 253 prop_object_iterator_release(it); 254 return dict ? true : false; 255 } 256 257 /* 258 * NPF EXTENSION INTERFACE. 259 */ 260 261 nl_ext_t * 262 npf_ext_construct(const char *name) 263 { 264 nl_ext_t *ext; 265 266 ext = malloc(sizeof(*ext)); 267 if (ext == NULL) { 268 return NULL; 269 } 270 ext->nxt_name = strdup(name); 271 if (ext->nxt_name == NULL) { 272 free(ext); 273 return NULL; 274 } 275 ext->nxt_dict = prop_dictionary_create(); 276 277 return ext; 278 } 279 280 void 281 npf_ext_param_u32(nl_ext_t *ext, const char *key, uint32_t val) 282 { 283 prop_dictionary_t extdict = ext->nxt_dict; 284 prop_dictionary_set_uint32(extdict, key, val); 285 } 286 287 void 288 npf_ext_param_bool(nl_ext_t *ext, const char *key, bool val) 289 { 290 prop_dictionary_t extdict = ext->nxt_dict; 291 prop_dictionary_set_bool(extdict, key, val); 292 } 293 294 /* 295 * RULE INTERFACE. 296 */ 297 298 nl_rule_t * 299 npf_rule_create(const char *name, uint32_t attr, u_int if_idx) 300 { 301 prop_dictionary_t rldict; 302 nl_rule_t *rl; 303 304 rl = malloc(sizeof(*rl)); 305 if (rl == NULL) { 306 return NULL; 307 } 308 rldict = prop_dictionary_create(); 309 if (rldict == NULL) { 310 free(rl); 311 return NULL; 312 } 313 if (name) { 314 prop_dictionary_set_cstring(rldict, "name", name); 315 } 316 prop_dictionary_set_uint32(rldict, "attributes", attr); 317 318 if (if_idx) { 319 prop_dictionary_set_uint32(rldict, "interface", if_idx); 320 } 321 rl->nrl_dict = rldict; 322 return rl; 323 } 324 325 int 326 npf_rule_setcode(nl_rule_t *rl, int type, const void *code, size_t sz) 327 { 328 prop_dictionary_t rldict = rl->nrl_dict; 329 prop_data_t cdata; 330 331 if (type != NPF_CODE_NCODE) { 332 return ENOTSUP; 333 } 334 cdata = prop_data_create_data(code, sz); 335 if (cdata == NULL) { 336 return ENOMEM; 337 } 338 prop_dictionary_set(rldict, "ncode", cdata); 339 prop_object_release(cdata); 340 return 0; 341 } 342 343 int 344 npf_rule_setproc(nl_config_t *ncf, nl_rule_t *rl, const char *name) 345 { 346 prop_dictionary_t rldict = rl->nrl_dict; 347 348 if (!npf_rproc_exists_p(ncf, name)) { 349 return ENOENT; 350 } 351 prop_dictionary_set_cstring(rldict, "rproc", name); 352 return 0; 353 } 354 355 bool 356 npf_rule_exists_p(nl_config_t *ncf, const char *name) 357 { 358 359 return _npf_prop_array_lookup(ncf->ncf_rules_list, "name", name); 360 } 361 362 int 363 npf_rule_insert(nl_config_t *ncf, nl_rule_t *parent, nl_rule_t *rl, pri_t pri) 364 { 365 prop_dictionary_t rldict = rl->nrl_dict; 366 prop_array_t rlset; 367 368 if (pri == NPF_PRI_NEXT) { 369 pri = ncf->ncf_rule_pri++; 370 } else if (ncf) { 371 ncf->ncf_rule_pri = pri + 1; 372 } 373 prop_dictionary_set_int32(rldict, "priority", pri); 374 375 if (parent) { 376 prop_dictionary_t pdict = parent->nrl_dict; 377 rlset = prop_dictionary_get(pdict, "subrules"); 378 if (rlset == NULL) { 379 rlset = prop_array_create(); 380 prop_dictionary_set(pdict, "subrules", rlset); 381 prop_object_release(rlset); 382 } 383 } else { 384 rlset = ncf->ncf_rules_list; 385 } 386 prop_array_add(rlset, rldict); 387 return 0; 388 } 389 390 static int 391 _npf_rule_foreach1(prop_array_t rules, unsigned nlevel, nl_rule_callback_t func) 392 { 393 prop_dictionary_t rldict; 394 prop_object_iterator_t it; 395 396 if (!rules || prop_object_type(rules) != PROP_TYPE_ARRAY) { 397 return ENOENT; 398 } 399 it = prop_array_iterator(rules); 400 if (it == NULL) { 401 return ENOMEM; 402 } 403 while ((rldict = prop_object_iterator_next(it)) != NULL) { 404 prop_array_t subrules; 405 nl_rule_t nrl; 406 407 nrl.nrl_dict = rldict; 408 (*func)(&nrl, nlevel); 409 410 subrules = prop_dictionary_get(rldict, "subrules"); 411 (void)_npf_rule_foreach1(subrules, nlevel + 1, func); 412 prop_object_release(subrules); 413 } 414 prop_object_iterator_release(it); 415 return 0; 416 } 417 418 int 419 _npf_rule_foreach(nl_config_t *ncf, nl_rule_callback_t func) 420 { 421 422 return _npf_rule_foreach1(ncf->ncf_rules_list, 0, func); 423 } 424 425 pri_t 426 _npf_rule_getinfo(nl_rule_t *nrl, const char **rname, uint32_t *attr, 427 u_int *if_idx) 428 { 429 prop_dictionary_t rldict = nrl->nrl_dict; 430 pri_t prio; 431 432 prop_dictionary_get_cstring_nocopy(rldict, "name", rname); 433 prop_dictionary_get_uint32(rldict, "attributes", attr); 434 prop_dictionary_get_int32(rldict, "priority", &prio); 435 prop_dictionary_get_uint32(rldict, "interface", if_idx); 436 return prio; 437 } 438 439 const void * 440 _npf_rule_ncode(nl_rule_t *nrl, size_t *size) 441 { 442 prop_dictionary_t rldict = nrl->nrl_dict; 443 prop_object_t obj = prop_dictionary_get(rldict, "ncode"); 444 *size = prop_data_size(obj); 445 return prop_data_data_nocopy(obj); 446 } 447 448 const char * 449 _npf_rule_rproc(nl_rule_t *nrl) 450 { 451 prop_dictionary_t rldict = nrl->nrl_dict; 452 const char *rpname = NULL; 453 454 prop_dictionary_get_cstring_nocopy(rldict, "rproc", &rpname); 455 return rpname; 456 } 457 458 void 459 npf_rule_destroy(nl_rule_t *rl) 460 { 461 462 prop_object_release(rl->nrl_dict); 463 free(rl); 464 } 465 466 /* 467 * RULE PROCEDURE INTERFACE. 468 */ 469 470 nl_rproc_t * 471 npf_rproc_create(const char *name) 472 { 473 prop_dictionary_t rpdict; 474 prop_array_t extcalls; 475 nl_rproc_t *nrp; 476 477 nrp = malloc(sizeof(nl_rproc_t)); 478 if (nrp == NULL) { 479 return NULL; 480 } 481 rpdict = prop_dictionary_create(); 482 if (rpdict == NULL) { 483 free(nrp); 484 return NULL; 485 } 486 prop_dictionary_set_cstring(rpdict, "name", name); 487 488 extcalls = prop_array_create(); 489 if (extcalls == NULL) { 490 prop_object_release(rpdict); 491 free(nrp); 492 return NULL; 493 } 494 prop_dictionary_set(rpdict, "extcalls", extcalls); 495 prop_object_release(extcalls); 496 497 nrp->nrp_dict = rpdict; 498 return nrp; 499 } 500 501 int 502 npf_rproc_extcall(nl_rproc_t *rp, nl_ext_t *ext) 503 { 504 prop_dictionary_t rpdict = rp->nrp_dict; 505 prop_dictionary_t extdict = ext->nxt_dict; 506 prop_array_t extcalls; 507 508 extcalls = prop_dictionary_get(rpdict, "extcalls"); 509 if (_npf_prop_array_lookup(extcalls, "name", ext->nxt_name)) { 510 return EEXIST; 511 } 512 prop_dictionary_set_cstring(extdict, "name", ext->nxt_name); 513 prop_array_add(extcalls, extdict); 514 return 0; 515 } 516 517 bool 518 npf_rproc_exists_p(nl_config_t *ncf, const char *name) 519 { 520 521 return _npf_prop_array_lookup(ncf->ncf_rproc_list, "name", name); 522 } 523 524 int 525 npf_rproc_insert(nl_config_t *ncf, nl_rproc_t *rp) 526 { 527 prop_dictionary_t rpdict = rp->nrp_dict; 528 const char *name; 529 530 if (!prop_dictionary_get_cstring_nocopy(rpdict, "name", &name)) { 531 return EINVAL; 532 } 533 if (npf_rproc_exists_p(ncf, name)) { 534 return EEXIST; 535 } 536 prop_array_add(ncf->ncf_rproc_list, rpdict); 537 return 0; 538 } 539 540 /* 541 * TRANSLATION INTERFACE. 542 */ 543 544 nl_nat_t * 545 npf_nat_create(int type, u_int flags, u_int if_idx, 546 npf_addr_t *addr, int af, in_port_t port) 547 { 548 nl_rule_t *rl; 549 prop_dictionary_t rldict; 550 prop_data_t addrdat; 551 uint32_t attr; 552 size_t sz; 553 554 if (af == AF_INET) { 555 sz = sizeof(struct in_addr); 556 } else if (af == AF_INET6) { 557 sz = sizeof(struct in6_addr); 558 } else { 559 return NULL; 560 } 561 562 attr = NPF_RULE_PASS | NPF_RULE_FINAL | 563 (type == NPF_NATOUT ? NPF_RULE_OUT : NPF_RULE_IN); 564 565 /* Create a rule for NAT policy. Next, will add translation data. */ 566 rl = npf_rule_create(NULL, attr, if_idx); 567 if (rl == NULL) { 568 return NULL; 569 } 570 rldict = rl->nrl_dict; 571 572 /* Translation type and flags. */ 573 prop_dictionary_set_int32(rldict, "type", type); 574 prop_dictionary_set_uint32(rldict, "flags", flags); 575 576 /* Translation IP. */ 577 addrdat = prop_data_create_data(addr, sz); 578 if (addrdat == NULL) { 579 npf_rule_destroy(rl); 580 return NULL; 581 } 582 prop_dictionary_set(rldict, "translation-ip", addrdat); 583 prop_object_release(addrdat); 584 585 /* Translation port (for redirect case). */ 586 prop_dictionary_set_uint16(rldict, "translation-port", port); 587 588 return (nl_nat_t *)rl; 589 } 590 591 int 592 npf_nat_insert(nl_config_t *ncf, nl_nat_t *nt, pri_t pri) 593 { 594 prop_dictionary_t rldict = nt->nrl_dict; 595 596 if (pri == NPF_PRI_NEXT) { 597 pri = ncf->ncf_nat_pri++; 598 } else { 599 ncf->ncf_nat_pri = pri + 1; 600 } 601 prop_dictionary_set_int32(rldict, "priority", pri); 602 prop_array_add(ncf->ncf_nat_list, rldict); 603 return 0; 604 } 605 606 int 607 _npf_nat_foreach(nl_config_t *ncf, nl_rule_callback_t func) 608 { 609 610 return _npf_rule_foreach1(ncf->ncf_nat_list, 0, func); 611 } 612 613 void 614 _npf_nat_getinfo(nl_nat_t *nt, int *type, u_int *flags, npf_addr_t *addr, 615 size_t *alen, in_port_t *port) 616 { 617 prop_dictionary_t rldict = nt->nrl_dict; 618 619 prop_dictionary_get_int32(rldict, "type", type); 620 prop_dictionary_get_uint32(rldict, "flags", flags); 621 622 prop_object_t obj = prop_dictionary_get(rldict, "translation-ip"); 623 *alen = prop_data_size(obj); 624 memcpy(addr, prop_data_data_nocopy(obj), *alen); 625 626 prop_dictionary_get_uint16(rldict, "translation-port", port); 627 } 628 629 /* 630 * TABLE INTERFACE. 631 */ 632 633 nl_table_t * 634 npf_table_create(u_int id, int type) 635 { 636 prop_dictionary_t tldict; 637 prop_array_t tblents; 638 nl_table_t *tl; 639 640 tl = malloc(sizeof(*tl)); 641 if (tl == NULL) { 642 return NULL; 643 } 644 tldict = prop_dictionary_create(); 645 if (tldict == NULL) { 646 free(tl); 647 return NULL; 648 } 649 prop_dictionary_set_uint32(tldict, "id", id); 650 prop_dictionary_set_int32(tldict, "type", type); 651 652 tblents = prop_array_create(); 653 if (tblents == NULL) { 654 prop_object_release(tldict); 655 free(tl); 656 return NULL; 657 } 658 prop_dictionary_set(tldict, "entries", tblents); 659 prop_object_release(tblents); 660 661 tl->ntl_dict = tldict; 662 return tl; 663 } 664 665 int 666 npf_table_add_entry(nl_table_t *tl, const int alen, 667 const npf_addr_t *addr, const npf_netmask_t mask) 668 { 669 prop_dictionary_t tldict = tl->ntl_dict, entdict; 670 prop_array_t tblents; 671 prop_data_t addrdata; 672 673 /* Create the table entry. */ 674 entdict = prop_dictionary_create(); 675 if (entdict == NULL) { 676 return ENOMEM; 677 } 678 addrdata = prop_data_create_data(addr, alen); 679 prop_dictionary_set(entdict, "addr", addrdata); 680 prop_dictionary_set_uint8(entdict, "mask", mask); 681 prop_object_release(addrdata); 682 683 /* Insert the entry. */ 684 tblents = prop_dictionary_get(tldict, "entries"); 685 prop_array_add(tblents, entdict); 686 prop_object_release(entdict); 687 return 0; 688 } 689 690 bool 691 npf_table_exists_p(nl_config_t *ncf, u_int tid) 692 { 693 prop_dictionary_t tldict; 694 prop_object_iterator_t it; 695 696 it = prop_array_iterator(ncf->ncf_table_list); 697 while ((tldict = prop_object_iterator_next(it)) != NULL) { 698 u_int i; 699 if (prop_dictionary_get_uint32(tldict, "id", &i) && tid == i) 700 break; 701 } 702 prop_object_iterator_release(it); 703 return tldict ? true : false; 704 } 705 706 int 707 npf_table_insert(nl_config_t *ncf, nl_table_t *tl) 708 { 709 prop_dictionary_t tldict = tl->ntl_dict; 710 u_int tid; 711 712 if (!prop_dictionary_get_uint32(tldict, "id", &tid)) { 713 return EINVAL; 714 } 715 if (npf_table_exists_p(ncf, tid)) { 716 return EEXIST; 717 } 718 prop_array_add(ncf->ncf_table_list, tldict); 719 return 0; 720 } 721 722 void 723 npf_table_destroy(nl_table_t *tl) 724 { 725 726 prop_object_release(tl->ntl_dict); 727 free(tl); 728 } 729 730 void 731 _npf_table_foreach(nl_config_t *ncf, nl_table_callback_t func) 732 { 733 prop_dictionary_t tldict; 734 prop_object_iterator_t it; 735 736 it = prop_array_iterator(ncf->ncf_table_list); 737 while ((tldict = prop_object_iterator_next(it)) != NULL) { 738 u_int id; 739 int type; 740 741 prop_dictionary_get_uint32(tldict, "id", &id); 742 prop_dictionary_get_int32(tldict, "type", &type); 743 (*func)(id, type); 744 } 745 prop_object_iterator_release(it); 746 } 747 748 /* 749 * MISC. 750 */ 751 752 int 753 npf_update_rule(int fd, const char *rname __unused, nl_rule_t *rl) 754 { 755 prop_dictionary_t rldict = rl->nrl_dict, errdict = NULL; 756 int error; 757 758 error = prop_dictionary_sendrecv_ioctl(rldict, fd, 759 IOC_NPF_UPDATE_RULE, &errdict); 760 if (errdict) { 761 prop_object_release(errdict); 762 } 763 return error; 764 } 765 766 int 767 npf_sessions_recv(int fd, const char *fpath) 768 { 769 prop_dictionary_t sdict; 770 int error; 771 772 error = prop_dictionary_recv_ioctl(fd, IOC_NPF_SESSIONS_SAVE, &sdict); 773 if (error) { 774 return error; 775 } 776 if (!prop_dictionary_externalize_to_file(sdict, fpath)) { 777 error = errno; 778 } 779 prop_object_release(sdict); 780 return error; 781 } 782 783 int 784 npf_sessions_send(int fd, const char *fpath) 785 { 786 prop_dictionary_t sdict; 787 int error; 788 789 if (fpath) { 790 sdict = prop_dictionary_internalize_from_file(fpath); 791 if (sdict == NULL) { 792 return errno; 793 } 794 } else { 795 /* Empty: will flush the sessions. */ 796 prop_array_t selist = prop_array_create(); 797 sdict = prop_dictionary_create(); 798 prop_dictionary_set(sdict, "session-list", selist); 799 prop_object_release(selist); 800 } 801 error = prop_dictionary_send_ioctl(sdict, fd, IOC_NPF_SESSIONS_LOAD); 802 prop_object_release(sdict); 803 return error; 804 } 805 806 static prop_dictionary_t 807 _npf_debug_initonce(nl_config_t *ncf) 808 { 809 if (!ncf->ncf_debug) { 810 prop_array_t iflist = prop_array_create(); 811 ncf->ncf_debug = prop_dictionary_create(); 812 prop_dictionary_set(ncf->ncf_debug, "interfaces", iflist); 813 prop_object_release(iflist); 814 } 815 return ncf->ncf_debug; 816 } 817 818 void 819 _npf_debug_addif(nl_config_t *ncf, struct ifaddrs *ifa, u_int if_idx) 820 { 821 prop_dictionary_t ifdict, dbg = _npf_debug_initonce(ncf); 822 prop_array_t iflist = prop_dictionary_get(dbg, "interfaces"); 823 824 if (_npf_prop_array_lookup(iflist, "name", ifa->ifa_name)) { 825 return; 826 } 827 828 ifdict = prop_dictionary_create(); 829 prop_dictionary_set_cstring(ifdict, "name", ifa->ifa_name); 830 prop_dictionary_set_uint32(ifdict, "flags", ifa->ifa_flags); 831 if (!if_idx) { 832 if_idx = if_nametoindex(ifa->ifa_name); 833 } 834 prop_dictionary_set_uint32(ifdict, "idx", if_idx); 835 836 const struct sockaddr *sa = ifa->ifa_addr; 837 npf_addr_t addr; 838 size_t alen = 0; 839 840 switch (sa ? sa->sa_family : -1) { 841 case AF_INET: { 842 const struct sockaddr_in *sin = (const void *)sa; 843 alen = sizeof(sin->sin_addr); 844 memcpy(&addr, &sin->sin_addr, alen); 845 break; 846 } 847 case AF_INET6: { 848 const struct sockaddr_in6 *sin6 = (const void *)sa; 849 alen = sizeof(sin6->sin6_addr); 850 memcpy(&addr, &sin6->sin6_addr, alen); 851 break; 852 } 853 default: 854 break; 855 } 856 857 if (alen) { 858 prop_data_t addrdata = prop_data_create_data(&addr, alen); 859 prop_dictionary_set(ifdict, "addr", addrdata); 860 prop_object_release(addrdata); 861 } 862 prop_array_add(iflist, ifdict); 863 prop_object_release(ifdict); 864 } 865
Indexes created Mon Sep 22 21:09:42 GMT 2025