1 /* $OpenBSD: config.c,v 1.74 2020/11/29 21:00:43 tobhe Exp $ */ 2 3 /* 4 * Copyright (c) 2019 Tobias Heider <tobias.heider@stusta.de> 5 * Copyright (c) 2010-2013 Reyk Floeter <reyk@openbsd.org> 6 * 7 * Permission to use, copy, modify, and distribute this software for any 8 * purpose with or without fee is hereby granted, provided that the above 9 * copyright notice and this permission notice appear in all copies. 10 * 11 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 12 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 13 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 14 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 15 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 16 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 17 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 18 */ 19 20 #include <sys/queue.h> 21 #include <sys/socket.h> 22 #include <sys/uio.h> 23 24 #include <stdlib.h> 25 #include <stdio.h> 26 #include <unistd.h> 27 #include <string.h> 28 #include <signal.h> 29 #include <errno.h> 30 #include <err.h> 31 #include <event.h> 32 33 #include <openssl/evp.h> 34 #include <openssl/pem.h> 35 36 #include "iked.h" 37 #include "ikev2.h" 38 39 struct iked_sa * 40 config_new_sa(struct iked *env, int initiator) 41 { 42 struct iked_sa *sa; 43 44 if ((sa = calloc(1, sizeof(*sa))) == NULL) 45 return (NULL); 46 47 TAILQ_INIT(&sa->sa_proposals); 48 TAILQ_INIT(&sa->sa_childsas); 49 TAILQ_INIT(&sa->sa_flows); 50 TAILQ_INIT(&sa->sa_requests); 51 TAILQ_INIT(&sa->sa_responses); 52 sa->sa_hdr.sh_initiator = initiator; 53 sa->sa_type = IKED_SATYPE_LOCAL; 54 55 if (initiator) 56 sa->sa_hdr.sh_ispi = config_getspi(); 57 else 58 sa->sa_hdr.sh_rspi = config_getspi(); 59 60 gettimeofday(&sa->sa_timecreated, NULL); 61 memcpy(&sa->sa_timeused, &sa->sa_timecreated, sizeof(sa->sa_timeused)); 62 63 return (sa); 64 } 65 66 uint64_t 67 config_getspi(void) 68 { 69 uint64_t spi; 70 71 do { 72 arc4random_buf(&spi, sizeof spi); 73 } while (spi == 0); 74 75 return (spi); 76 } 77 78 void 79 config_free_kex(struct iked_kex *kex) 80 { 81 if (kex == NULL) 82 return; 83 84 ibuf_release(kex->kex_inonce); 85 ibuf_release(kex->kex_rnonce); 86 87 if (kex->kex_dhgroup != NULL) 88 group_free(kex->kex_dhgroup); 89 ibuf_release(kex->kex_dhiexchange); 90 ibuf_release(kex->kex_dhrexchange); 91 92 free(kex); 93 } 94 95 void 96 config_free_fragments(struct iked_frag *frag) 97 { 98 size_t i; 99 100 if (frag && frag->frag_arr) { 101 for (i = 0; i < frag->frag_total; i++) { 102 if (frag->frag_arr[i] != NULL) 103 free(frag->frag_arr[i]->frag_data); 104 free(frag->frag_arr[i]); 105 } 106 free(frag->frag_arr); 107 bzero(frag, sizeof(struct iked_frag)); 108 } 109 } 110 111 void 112 config_free_sa(struct iked *env, struct iked_sa *sa) 113 { 114 timer_del(env, &sa->sa_timer); 115 timer_del(env, &sa->sa_keepalive); 116 timer_del(env, &sa->sa_rekey); 117 118 config_free_fragments(&sa->sa_fragments); 119 config_free_proposals(&sa->sa_proposals, 0); 120 config_free_childsas(env, &sa->sa_childsas, NULL, NULL); 121 sa_free_flows(env, &sa->sa_flows); 122 123 if (sa->sa_addrpool) { 124 (void)RB_REMOVE(iked_addrpool, &env->sc_addrpool, sa); 125 free(sa->sa_addrpool); 126 } 127 if (sa->sa_addrpool6) { 128 (void)RB_REMOVE(iked_addrpool6, &env->sc_addrpool6, sa); 129 free(sa->sa_addrpool6); 130 } 131 132 if (sa->sa_policy) { 133 TAILQ_REMOVE(&sa->sa_policy->pol_sapeers, sa, sa_peer_entry); 134 policy_unref(env, sa->sa_policy); 135 } 136 137 ikev2_msg_flushqueue(env, &sa->sa_requests); 138 ikev2_msg_flushqueue(env, &sa->sa_responses); 139 140 ibuf_release(sa->sa_inonce); 141 ibuf_release(sa->sa_rnonce); 142 143 if (sa->sa_dhgroup != NULL) 144 group_free(sa->sa_dhgroup); 145 ibuf_release(sa->sa_dhiexchange); 146 ibuf_release(sa->sa_dhrexchange); 147 148 ibuf_release(sa->sa_simult); 149 150 hash_free(sa->sa_prf); 151 hash_free(sa->sa_integr); 152 cipher_free(sa->sa_encr); 153 154 ibuf_release(sa->sa_key_d); 155 ibuf_release(sa->sa_key_iauth); 156 ibuf_release(sa->sa_key_rauth); 157 ibuf_release(sa->sa_key_iencr); 158 ibuf_release(sa->sa_key_rencr); 159 ibuf_release(sa->sa_key_iprf); 160 ibuf_release(sa->sa_key_rprf); 161 162 ibuf_release(sa->sa_1stmsg); 163 ibuf_release(sa->sa_2ndmsg); 164 165 ibuf_release(sa->sa_iid.id_buf); 166 ibuf_release(sa->sa_rid.id_buf); 167 ibuf_release(sa->sa_icert.id_buf); 168 ibuf_release(sa->sa_rcert.id_buf); 169 ibuf_release(sa->sa_localauth.id_buf); 170 ibuf_release(sa->sa_peerauth.id_buf); 171 172 ibuf_release(sa->sa_eap.id_buf); 173 free(sa->sa_eapid); 174 ibuf_release(sa->sa_eapmsk); 175 176 free(sa->sa_cp_addr); 177 free(sa->sa_cp_addr6); 178 179 free(sa->sa_tag); 180 free(sa); 181 } 182 183 struct iked_policy * 184 config_new_policy(struct iked *env) 185 { 186 struct iked_policy *pol; 187 188 if ((pol = calloc(1, sizeof(*pol))) == NULL) 189 return (NULL); 190 191 /* XXX caller does this again */ 192 TAILQ_INIT(&pol->pol_proposals); 193 TAILQ_INIT(&pol->pol_sapeers); 194 TAILQ_INIT(&pol->pol_tssrc); 195 TAILQ_INIT(&pol->pol_tsdst); 196 RB_INIT(&pol->pol_flows); 197 198 return (pol); 199 } 200 201 void 202 config_free_policy(struct iked *env, struct iked_policy *pol) 203 { 204 struct iked_sa *sa; 205 struct iked_ts *tsi; 206 207 if (pol->pol_flags & IKED_POLICY_REFCNT) 208 goto remove; 209 210 TAILQ_REMOVE(&env->sc_policies, pol, pol_entry); 211 212 TAILQ_FOREACH(sa, &pol->pol_sapeers, sa_peer_entry) { 213 /* Remove from the policy list, but keep for existing SAs */ 214 if (sa->sa_policy == pol) 215 policy_ref(env, pol); 216 else 217 log_warnx("%s: ERROR: sa_policy %p != pol %p", 218 __func__, sa->sa_policy, pol); 219 } 220 221 if (pol->pol_refcnt) 222 return; 223 224 remove: 225 while ((tsi = TAILQ_FIRST(&pol->pol_tssrc))) { 226 TAILQ_REMOVE(&pol->pol_tssrc, tsi, ts_entry); 227 free(tsi); 228 } 229 while ((tsi = TAILQ_FIRST(&pol->pol_tsdst))) { 230 TAILQ_REMOVE(&pol->pol_tsdst, tsi, ts_entry); 231 free(tsi); 232 } 233 config_free_proposals(&pol->pol_proposals, 0); 234 config_free_flows(env, &pol->pol_flows); 235 free(pol); 236 } 237 238 struct iked_proposal * 239 config_add_proposal(struct iked_proposals *head, unsigned int id, 240 unsigned int proto) 241 { 242 struct iked_proposal *pp; 243 244 TAILQ_FOREACH(pp, head, prop_entry) { 245 if (pp->prop_protoid == proto && 246 pp->prop_id == id) 247 return (pp); 248 } 249 250 if ((pp = calloc(1, sizeof(*pp))) == NULL) 251 return (NULL); 252 253 pp->prop_protoid = proto; 254 pp->prop_id = id; 255 256 TAILQ_INSERT_TAIL(head, pp, prop_entry); 257 258 return (pp); 259 } 260 261 void 262 config_free_proposal(struct iked_proposals *head, struct iked_proposal *prop) 263 { 264 TAILQ_REMOVE(head, prop, prop_entry); 265 if (prop->prop_nxforms) 266 free(prop->prop_xforms); 267 free(prop); 268 } 269 270 void 271 config_free_proposals(struct iked_proposals *head, unsigned int proto) 272 { 273 struct iked_proposal *prop, *proptmp; 274 275 TAILQ_FOREACH_SAFE(prop, head, prop_entry, proptmp) { 276 /* Free any proposal or only selected SA proto */ 277 if (proto != 0 && prop->prop_protoid != proto) 278 continue; 279 280 log_debug("%s: free %p", __func__, prop); 281 282 config_free_proposal(head, prop); 283 } 284 } 285 286 void 287 config_free_flows(struct iked *env, struct iked_flows *head) 288 { 289 struct iked_flow *flow; 290 291 while ((flow = RB_MIN(iked_flows, head))) { 292 log_debug("%s: free %p", __func__, flow); 293 RB_REMOVE(iked_flows, head, flow); 294 flow_free(flow); 295 } 296 } 297 298 void 299 config_free_childsas(struct iked *env, struct iked_childsas *head, 300 struct iked_spi *peerspi, struct iked_spi *localspi) 301 { 302 struct iked_childsa *csa, *csatmp, *ipcomp; 303 304 if (localspi != NULL) 305 bzero(localspi, sizeof(*localspi)); 306 307 TAILQ_FOREACH_SAFE(csa, head, csa_entry, csatmp) { 308 if (peerspi != NULL) { 309 /* Only delete matching peer SPIs */ 310 if (peerspi->spi != csa->csa_peerspi) 311 continue; 312 313 /* Store assigned local SPI */ 314 if (localspi != NULL && localspi->spi == 0) 315 memcpy(localspi, &csa->csa_spi, 316 sizeof(*localspi)); 317 } 318 log_debug("%s: free %p", __func__, csa); 319 320 TAILQ_REMOVE(head, csa, csa_entry); 321 if (csa->csa_loaded) { 322 RB_REMOVE(iked_activesas, &env->sc_activesas, csa); 323 (void)pfkey_sa_delete(env->sc_pfkey, csa); 324 } 325 if ((ipcomp = csa->csa_bundled) != NULL) { 326 log_debug("%s: free IPCOMP %p", __func__, ipcomp); 327 if (ipcomp->csa_loaded) 328 (void)pfkey_sa_delete(env->sc_pfkey, ipcomp); 329 childsa_free(ipcomp); 330 } 331 childsa_free(csa); 332 } 333 } 334 335 int 336 config_add_transform(struct iked_proposal *prop, unsigned int type, 337 unsigned int id, unsigned int length, unsigned int keylength) 338 { 339 struct iked_transform *xform; 340 struct iked_constmap *map = NULL; 341 int score = 1; 342 unsigned int i; 343 344 switch (type) { 345 case IKEV2_XFORMTYPE_ENCR: 346 map = ikev2_xformencr_map; 347 break; 348 case IKEV2_XFORMTYPE_PRF: 349 map = ikev2_xformprf_map; 350 break; 351 case IKEV2_XFORMTYPE_INTEGR: 352 map = ikev2_xformauth_map; 353 break; 354 case IKEV2_XFORMTYPE_DH: 355 map = ikev2_xformdh_map; 356 break; 357 case IKEV2_XFORMTYPE_ESN: 358 map = ikev2_xformesn_map; 359 break; 360 default: 361 log_debug("%s: invalid transform type %d", __func__, type); 362 return (-2); 363 } 364 365 for (i = 0; i < prop->prop_nxforms; i++) { 366 xform = prop->prop_xforms + i; 367 if (xform->xform_type == type && 368 xform->xform_id == id && 369 xform->xform_length == length) 370 return (0); 371 } 372 373 for (i = 0; i < prop->prop_nxforms; i++) { 374 xform = prop->prop_xforms + i; 375 if (xform->xform_type == type) { 376 switch (type) { 377 case IKEV2_XFORMTYPE_ENCR: 378 case IKEV2_XFORMTYPE_INTEGR: 379 score += 3; 380 break; 381 case IKEV2_XFORMTYPE_DH: 382 score += 2; 383 break; 384 default: 385 score += 1; 386 break; 387 } 388 } 389 } 390 391 if ((xform = reallocarray(prop->prop_xforms, 392 prop->prop_nxforms + 1, sizeof(*xform))) == NULL) { 393 return (-1); 394 } 395 396 prop->prop_xforms = xform; 397 xform = prop->prop_xforms + prop->prop_nxforms++; 398 bzero(xform, sizeof(*xform)); 399 400 xform->xform_type = type; 401 xform->xform_id = id; 402 xform->xform_length = length; 403 xform->xform_keylength = keylength; 404 xform->xform_score = score; 405 xform->xform_map = map; 406 407 return (0); 408 } 409 410 struct iked_transform * 411 config_findtransform(struct iked_proposals *props, uint8_t type, 412 unsigned int proto) 413 { 414 struct iked_proposal *prop; 415 struct iked_transform *xform; 416 unsigned int i; 417 418 /* Search of the first transform with the desired type */ 419 TAILQ_FOREACH(prop, props, prop_entry) { 420 /* Find any proposal or only selected SA proto */ 421 if (proto != 0 && prop->prop_protoid != proto) 422 continue; 423 for (i = 0; i < prop->prop_nxforms; i++) { 424 xform = prop->prop_xforms + i; 425 if (xform->xform_type == type) 426 return (xform); 427 } 428 } 429 430 return (NULL); 431 } 432 433 struct iked_user * 434 config_new_user(struct iked *env, struct iked_user *new) 435 { 436 struct iked_user *usr, *old; 437 438 if ((usr = calloc(1, sizeof(*usr))) == NULL) 439 return (NULL); 440 441 memcpy(usr, new, sizeof(*usr)); 442 443 if ((old = RB_INSERT(iked_users, &env->sc_users, usr)) != NULL) { 444 /* Update the password of an existing user*/ 445 memcpy(old->usr_pass, new->usr_pass, IKED_PASSWORD_SIZE); 446 447 log_debug("%s: updating user %s", __func__, usr->usr_name); 448 free(usr); 449 450 return (old); 451 } 452 453 log_debug("%s: inserting new user %s", __func__, usr->usr_name); 454 return (usr); 455 } 456 457 /* 458 * Inter-process communication of configuration items. 459 */ 460 461 int 462 config_setcoupled(struct iked *env, unsigned int couple) 463 { 464 unsigned int type; 465 466 type = couple ? IMSG_CTL_COUPLE : IMSG_CTL_DECOUPLE; 467 proc_compose(&env->sc_ps, PROC_IKEV2, type, NULL, 0); 468 469 return (0); 470 } 471 472 int 473 config_getcoupled(struct iked *env, unsigned int type) 474 { 475 return (pfkey_couple(env->sc_pfkey, &env->sc_sas, 476 type == IMSG_CTL_COUPLE ? 1 : 0)); 477 } 478 479 int 480 config_setmode(struct iked *env, unsigned int passive) 481 { 482 unsigned int type; 483 484 type = passive ? IMSG_CTL_PASSIVE : IMSG_CTL_ACTIVE; 485 proc_compose(&env->sc_ps, PROC_IKEV2, type, NULL, 0); 486 487 return (0); 488 } 489 490 int 491 config_getmode(struct iked *env, unsigned int type) 492 { 493 uint8_t old; 494 unsigned char *mode[] = { "active", "passive" }; 495 496 old = env->sc_passive ? 1 : 0; 497 env->sc_passive = type == IMSG_CTL_PASSIVE ? 1 : 0; 498 499 if (old == env->sc_passive) 500 return (0); 501 502 log_debug("%s: mode %s -> %s", __func__, 503 mode[old], mode[env->sc_passive]); 504 505 return (0); 506 } 507 508 int 509 config_setreset(struct iked *env, unsigned int mode, enum privsep_procid id) 510 { 511 proc_compose(&env->sc_ps, id, IMSG_CTL_RESET, &mode, sizeof(mode)); 512 return (0); 513 } 514 515 int 516 config_getreset(struct iked *env, struct imsg *imsg) 517 { 518 struct iked_policy *pol, *poltmp; 519 struct iked_sa *sa; 520 struct iked_user *usr; 521 unsigned int mode; 522 523 IMSG_SIZE_CHECK(imsg, &mode); 524 memcpy(&mode, imsg->data, sizeof(mode)); 525 526 if (mode == RESET_ALL || mode == RESET_POLICY) { 527 log_debug("%s: flushing policies", __func__); 528 TAILQ_FOREACH_SAFE(pol, &env->sc_policies, pol_entry, poltmp) { 529 config_free_policy(env, pol); 530 } 531 } 532 533 if (mode == RESET_ALL || mode == RESET_SA) { 534 log_debug("%s: flushing SAs", __func__); 535 while ((sa = RB_MIN(iked_sas, &env->sc_sas))) { 536 /* for RESET_SA we try send a DELETE */ 537 if (mode == RESET_ALL || 538 ikev2_ike_sa_delete(env, sa) != 0) { 539 RB_REMOVE(iked_sas, &env->sc_sas, sa); 540 if (sa->sa_dstid_entry_valid) 541 sa_dstid_remove(env, sa); 542 config_free_sa(env, sa); 543 } 544 } 545 } 546 547 if (mode == RESET_ALL || mode == RESET_USER) { 548 log_debug("%s: flushing users", __func__); 549 while ((usr = RB_MIN(iked_users, &env->sc_users))) { 550 RB_REMOVE(iked_users, &env->sc_users, usr); 551 free(usr); 552 } 553 } 554 555 return (0); 556 } 557 558 /* 559 * The first call of this function sets the UDP socket for IKEv2. 560 * The second call is optional, setting the UDP socket used for NAT-T. 561 */ 562 int 563 config_setsocket(struct iked *env, struct sockaddr_storage *ss, 564 in_port_t port, enum privsep_procid id) 565 { 566 int s; 567 568 if ((s = udp_bind((struct sockaddr *)ss, port)) == -1) 569 return (-1); 570 proc_compose_imsg(&env->sc_ps, id, -1, 571 IMSG_UDP_SOCKET, -1, s, ss, sizeof(*ss)); 572 return (0); 573 } 574 575 int 576 config_getsocket(struct iked *env, struct imsg *imsg, 577 void (*cb)(int, short, void *)) 578 { 579 struct iked_socket *sock, **sock0, **sock1; 580 581 log_debug("%s: received socket fd %d", __func__, imsg->fd); 582 583 if ((sock = calloc(1, sizeof(*sock))) == NULL) 584 fatal("config_getsocket: calloc"); 585 586 IMSG_SIZE_CHECK(imsg, &sock->sock_addr); 587 588 memcpy(&sock->sock_addr, imsg->data, sizeof(sock->sock_addr)); 589 sock->sock_fd = imsg->fd; 590 sock->sock_env = env; 591 592 switch (sock->sock_addr.ss_family) { 593 case AF_INET: 594 sock0 = &env->sc_sock4[0]; 595 sock1 = &env->sc_sock4[1]; 596 break; 597 case AF_INET6: 598 sock0 = &env->sc_sock6[0]; 599 sock1 = &env->sc_sock6[1]; 600 break; 601 default: 602 fatal("config_getsocket: socket af: %u", 603 sock->sock_addr.ss_family); 604 /* NOTREACHED */ 605 } 606 if (*sock0 == NULL) 607 *sock0 = sock; 608 else if (*sock1 == NULL) 609 *sock1 = sock; 610 else 611 fatalx("%s: too many call", __func__); 612 613 event_set(&sock->sock_ev, sock->sock_fd, 614 EV_READ|EV_PERSIST, cb, sock); 615 event_add(&sock->sock_ev, NULL); 616 617 return (0); 618 } 619 620 int 621 config_setpfkey(struct iked *env, enum privsep_procid id) 622 { 623 int s; 624 625 if ((s = pfkey_socket()) == -1) 626 return (-1); 627 proc_compose_imsg(&env->sc_ps, id, -1, 628 IMSG_PFKEY_SOCKET, -1, s, NULL, 0); 629 return (0); 630 } 631 632 int 633 config_getpfkey(struct iked *env, struct imsg *imsg) 634 { 635 log_debug("%s: received pfkey fd %d", __func__, imsg->fd); 636 pfkey_init(env, imsg->fd); 637 return (0); 638 } 639 640 int 641 config_setuser(struct iked *env, struct iked_user *usr, enum privsep_procid id) 642 { 643 if (env->sc_opts & IKED_OPT_NOACTION) { 644 print_user(usr); 645 return (0); 646 } 647 648 proc_compose(&env->sc_ps, id, IMSG_CFG_USER, usr, sizeof(*usr)); 649 return (0); 650 } 651 652 int 653 config_getuser(struct iked *env, struct imsg *imsg) 654 { 655 struct iked_user usr; 656 657 IMSG_SIZE_CHECK(imsg, &usr); 658 memcpy(&usr, imsg->data, sizeof(usr)); 659 660 if (config_new_user(env, &usr) == NULL) 661 return (-1); 662 663 print_user(&usr); 664 665 return (0); 666 } 667 668 int 669 config_setpolicy(struct iked *env, struct iked_policy *pol, 670 enum privsep_procid id) 671 { 672 struct iked_proposal *prop; 673 struct iked_transform *xform; 674 size_t iovcnt, j, c = 0; 675 struct iovec iov[IOV_MAX]; 676 677 iovcnt = 1; 678 TAILQ_FOREACH(prop, &pol->pol_proposals, prop_entry) { 679 iovcnt += prop->prop_nxforms + 1; 680 } 681 682 if (iovcnt > IOV_MAX) { 683 log_warn("%s: too many proposals", __func__); 684 return (-1); 685 } 686 687 iov[c].iov_base = pol; 688 iov[c++].iov_len = sizeof(*pol); 689 690 TAILQ_FOREACH(prop, &pol->pol_proposals, prop_entry) { 691 iov[c].iov_base = prop; 692 iov[c++].iov_len = sizeof(*prop); 693 694 for (j = 0; j < prop->prop_nxforms; j++) { 695 xform = prop->prop_xforms + j; 696 697 iov[c].iov_base = xform; 698 iov[c++].iov_len = sizeof(*xform); 699 } 700 } 701 702 print_policy(pol); 703 704 if (env->sc_opts & IKED_OPT_NOACTION) 705 return (0); 706 707 if (proc_composev(&env->sc_ps, id, IMSG_CFG_POLICY, iov, 708 iovcnt) == -1) { 709 log_debug("%s: proc_composev failed", __func__); 710 return (-1); 711 } 712 713 return (0); 714 } 715 716 int 717 config_setflow(struct iked *env, struct iked_policy *pol, 718 enum privsep_procid id) 719 { 720 struct iked_flow *flow; 721 struct iovec iov[2]; 722 723 if (env->sc_opts & IKED_OPT_NOACTION) 724 return (0); 725 726 RB_FOREACH(flow, iked_flows, &pol->pol_flows) { 727 iov[0].iov_base = &pol->pol_id; 728 iov[0].iov_len = sizeof(pol->pol_id); 729 iov[1].iov_base = flow; 730 iov[1].iov_len = sizeof(*flow); 731 732 if (proc_composev(&env->sc_ps, id, IMSG_CFG_FLOW, 733 iov, 2) == -1) { 734 log_debug("%s: proc_composev failed", __func__); 735 return (-1); 736 } 737 } 738 739 return (0); 740 } 741 742 int 743 config_getpolicy(struct iked *env, struct imsg *imsg) 744 { 745 struct iked_policy *pol; 746 struct iked_proposal pp, *prop; 747 struct iked_transform xf; 748 off_t offset = 0; 749 unsigned int i, j; 750 uint8_t *buf = (uint8_t *)imsg->data; 751 752 IMSG_SIZE_CHECK(imsg, pol); 753 log_debug("%s: received policy", __func__); 754 755 if ((pol = config_new_policy(NULL)) == NULL) 756 fatal("config_getpolicy: new policy"); 757 758 memcpy(pol, buf, sizeof(*pol)); 759 offset += sizeof(*pol); 760 761 TAILQ_INIT(&pol->pol_tssrc); 762 TAILQ_INIT(&pol->pol_tsdst); 763 TAILQ_INIT(&pol->pol_proposals); 764 TAILQ_INIT(&pol->pol_sapeers); 765 RB_INIT(&pol->pol_flows); 766 767 for (i = 0; i < pol->pol_nproposals; i++) { 768 memcpy(&pp, buf + offset, sizeof(pp)); 769 offset += sizeof(pp); 770 771 if ((prop = config_add_proposal(&pol->pol_proposals, 772 pp.prop_id, pp.prop_protoid)) == NULL) 773 fatal("config_getpolicy: add proposal"); 774 775 for (j = 0; j < pp.prop_nxforms; j++) { 776 memcpy(&xf, buf + offset, sizeof(xf)); 777 offset += sizeof(xf); 778 779 if (config_add_transform(prop, xf.xform_type, 780 xf.xform_id, xf.xform_length, 781 xf.xform_keylength) != 0) 782 fatal("config_getpolicy: add transform"); 783 } 784 } 785 786 /* Flows are sent separately */ 787 pol->pol_nflows = 0; 788 789 TAILQ_INSERT_TAIL(&env->sc_policies, pol, pol_entry); 790 791 if (pol->pol_flags & IKED_POLICY_DEFAULT) { 792 /* Only one default policy, just free/unref the old one */ 793 if (env->sc_defaultcon != NULL) 794 config_free_policy(env, env->sc_defaultcon); 795 env->sc_defaultcon = pol; 796 } 797 798 return (0); 799 } 800 801 int 802 config_getflow(struct iked *env, struct imsg *imsg) 803 { 804 struct iked_policy *pol; 805 struct iked_flow *flow; 806 off_t offset = 0; 807 unsigned int id; 808 uint8_t *buf = (uint8_t *)imsg->data; 809 810 if (IMSG_DATA_SIZE(imsg) < sizeof(id)) 811 fatalx("bad length imsg received"); 812 813 memcpy(&id, buf, sizeof(id)); 814 offset += sizeof(id); 815 816 TAILQ_FOREACH(pol, &env->sc_policies, pol_entry) { 817 if (pol->pol_id == id) 818 break; 819 } 820 if (pol == NULL) { 821 log_warnx("%s: unknown policy %u", __func__, id); 822 return (-1); 823 } 824 825 if ((flow = calloc(1, sizeof(*flow))) == NULL) 826 fatal("config_getpolicy: new flow"); 827 828 memcpy(flow, buf + offset, sizeof(*flow)); 829 830 if (RB_INSERT(iked_flows, &pol->pol_flows, flow)) { 831 log_warnx("%s: received duplicate flow", __func__); 832 free(flow); 833 return (-1); 834 } 835 pol->pol_nflows++; 836 837 return (0); 838 } 839 840 int 841 config_setcompile(struct iked *env, enum privsep_procid id) 842 { 843 if (env->sc_opts & IKED_OPT_NOACTION) 844 return (0); 845 846 proc_compose(&env->sc_ps, id, IMSG_COMPILE, NULL, 0); 847 return (0); 848 } 849 850 int 851 config_getcompile(struct iked *env) 852 { 853 /* 854 * Do any necessary steps after configuration, for now we 855 * only need to compile the skip steps. 856 */ 857 policy_calc_skip_steps(&env->sc_policies); 858 859 log_debug("%s: compilation done", __func__); 860 return (0); 861 } 862 863 int 864 config_setstatic(struct iked *env) 865 { 866 proc_compose(&env->sc_ps, PROC_IKEV2, IMSG_CTL_STATIC, 867 &env->sc_static, sizeof(env->sc_static)); 868 return (0); 869 } 870 871 int 872 config_getstatic(struct iked *env, struct imsg *imsg) 873 { 874 IMSG_SIZE_CHECK(imsg, &env->sc_static); 875 memcpy(&env->sc_static, imsg->data, sizeof(env->sc_static)); 876 877 log_debug("%s: dpd_check_interval %llu", __func__, env->sc_alive_timeout); 878 log_debug("%s: %senforcesingleikesa", __func__, 879 env->sc_enforcesingleikesa ? "" : "no "); 880 log_debug("%s: %sfragmentation", __func__, env->sc_frag ? "" : "no "); 881 log_debug("%s: %smobike", __func__, env->sc_mobike ? "" : "no "); 882 log_debug("%s: nattport %u", __func__, env->sc_nattport); 883 log_debug("%s: %sstickyaddress", __func__, 884 env->sc_stickyaddress ? "" : "no "); 885 886 return (0); 887 } 888 889 int 890 config_setocsp(struct iked *env) 891 { 892 struct iovec iov[3]; 893 int iovcnt = 0; 894 895 if (env->sc_opts & IKED_OPT_NOACTION) 896 return (0); 897 898 iov[0].iov_base = &env->sc_ocsp_tolerate; 899 iov[0].iov_len = sizeof(env->sc_ocsp_tolerate); 900 iovcnt++; 901 iov[1].iov_base = &env->sc_ocsp_maxage; 902 iov[1].iov_len = sizeof(env->sc_ocsp_maxage); 903 iovcnt++; 904 if (env->sc_ocsp_url) { 905 iov[2].iov_base = env->sc_ocsp_url; 906 iov[2].iov_len = strlen(env->sc_ocsp_url); 907 iovcnt++; 908 } 909 return (proc_composev(&env->sc_ps, PROC_CERT, IMSG_OCSP_CFG, 910 iov, iovcnt)); 911 } 912 913 int 914 config_getocsp(struct iked *env, struct imsg *imsg) 915 { 916 size_t have, need; 917 u_int8_t *ptr; 918 919 free(env->sc_ocsp_url); 920 ptr = (u_int8_t *)imsg->data; 921 have = IMSG_DATA_SIZE(imsg); 922 923 /* get tolerate */ 924 need = sizeof(env->sc_ocsp_tolerate); 925 if (have < need) 926 fatalx("bad 'tolerate' length imsg received"); 927 memcpy(&env->sc_ocsp_tolerate, ptr, need); 928 ptr += need; 929 have -= need; 930 931 /* get maxage */ 932 need = sizeof(env->sc_ocsp_maxage); 933 if (have < need) 934 fatalx("bad 'maxage' length imsg received"); 935 memcpy(&env->sc_ocsp_maxage, ptr, need); 936 ptr += need; 937 have -= need; 938 939 /* get url */ 940 if (have > 0) 941 env->sc_ocsp_url = get_string(ptr, have); 942 else 943 env->sc_ocsp_url = NULL; 944 log_debug("%s: ocsp_url %s tolerate %ld maxage %ld", __func__, 945 env->sc_ocsp_url ? env->sc_ocsp_url : "none", 946 env->sc_ocsp_tolerate, env->sc_ocsp_maxage); 947 return (0); 948 } 949 950 int 951 config_setcertpartialchain(struct iked *env) 952 { 953 unsigned int boolval; 954 955 boolval = env->sc_cert_partial_chain; 956 proc_compose(&env->sc_ps, PROC_CERT, IMSG_CERT_PARTIAL_CHAIN, 957 &boolval, sizeof(boolval)); 958 return (0); 959 } 960 961 int 962 config_getcertpartialchain(struct iked *env, struct imsg *imsg) 963 { 964 unsigned int boolval; 965 966 IMSG_SIZE_CHECK(imsg, &boolval); 967 memcpy(&boolval, imsg->data, sizeof(boolval)); 968 env->sc_cert_partial_chain = boolval; 969 return (0); 970 } 971 972 int 973 config_setkeys(struct iked *env) 974 { 975 FILE *fp = NULL; 976 EVP_PKEY *key = NULL; 977 struct iked_id privkey; 978 struct iked_id pubkey; 979 struct iovec iov[2]; 980 int ret = -1; 981 982 memset(&privkey, 0, sizeof(privkey)); 983 memset(&pubkey, 0, sizeof(pubkey)); 984 985 /* Read private key */ 986 if ((fp = fopen(IKED_PRIVKEY, "r")) == NULL) { 987 log_warn("%s: failed to open private key", __func__); 988 goto done; 989 } 990 991 if ((key = PEM_read_PrivateKey(fp, NULL, NULL, NULL)) == NULL) { 992 log_warnx("%s: failed to read private key", __func__); 993 goto done; 994 } 995 996 if (ca_privkey_serialize(key, &privkey) != 0) { 997 log_warnx("%s: failed to serialize private key", __func__); 998 goto done; 999 } 1000 if (ca_pubkey_serialize(key, &pubkey) != 0) { 1001 log_warnx("%s: failed to serialize public key", __func__); 1002 goto done; 1003 } 1004 1005 iov[0].iov_base = &privkey; 1006 iov[0].iov_len = sizeof(privkey); 1007 iov[1].iov_base = ibuf_data(privkey.id_buf); 1008 iov[1].iov_len = ibuf_length(privkey.id_buf); 1009 1010 if (proc_composev(&env->sc_ps, PROC_CERT, IMSG_PRIVKEY, iov, 2) == -1) { 1011 log_warnx("%s: failed to send private key", __func__); 1012 goto done; 1013 } 1014 1015 iov[0].iov_base = &pubkey; 1016 iov[0].iov_len = sizeof(pubkey); 1017 iov[1].iov_base = ibuf_data(pubkey.id_buf); 1018 iov[1].iov_len = ibuf_length(pubkey.id_buf); 1019 1020 if (proc_composev(&env->sc_ps, PROC_CERT, IMSG_PUBKEY, iov, 2) == -1) { 1021 log_warnx("%s: failed to send public key", __func__); 1022 goto done; 1023 } 1024 1025 ret = 0; 1026 done: 1027 if (fp != NULL) 1028 fclose(fp); 1029 1030 ibuf_release(pubkey.id_buf); 1031 ibuf_release(privkey.id_buf); 1032 EVP_PKEY_free(key); 1033 1034 return (ret); 1035 } 1036 1037 int 1038 config_getkey(struct iked *env, struct imsg *imsg) 1039 { 1040 size_t len; 1041 struct iked_id id; 1042 1043 len = IMSG_DATA_SIZE(imsg); 1044 if (len <= sizeof(id)) 1045 fatalx("%s: invalid key message", __func__); 1046 1047 memcpy(&id, imsg->data, sizeof(id)); 1048 if ((id.id_buf = ibuf_new((uint8_t *)imsg->data + sizeof(id), 1049 len - sizeof(id))) == NULL) 1050 fatalx("%s: failed to get key", __func__); 1051 1052 explicit_bzero(imsg->data, len); 1053 ca_getkey(&env->sc_ps, &id, imsg->hdr.type); 1054 1055 ikev2_reset_alive_timer(env); 1056 1057 return (0); 1058 } 1059