1/* $OpenBSD: config.c,v 1.97 2024/02/15 19:11:00 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 39struct iked_sa * 40config_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 ikestat_inc(env, ikes_sa_created); 64 return (sa); 65} 66 67uint64_t 68config_getspi(void) 69{ 70 uint64_t spi; 71 72 do { 73 arc4random_buf(&spi, sizeof spi); 74 } while (spi == 0); 75 76 return (spi); 77} 78 79void 80config_free_kex(struct iked_kex *kex) 81{ 82 if (kex == NULL) 83 return; 84 85 ibuf_free(kex->kex_inonce); 86 ibuf_free(kex->kex_rnonce); 87 88 group_free(kex->kex_dhgroup); 89 ibuf_free(kex->kex_dhiexchange); 90 ibuf_free(kex->kex_dhrexchange); 91 92 free(kex); 93} 94 95void 96config_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 111void 112config_free_sa(struct iked *env, struct iked_sa *sa) 113{ 114 int i; 115 116 timer_del(env, &sa->sa_timer); 117 timer_del(env, &sa->sa_keepalive); 118 timer_del(env, &sa->sa_rekey); 119 120 config_free_fragments(&sa->sa_fragments); 121 config_free_proposals(&sa->sa_proposals, 0); 122 config_free_childsas(env, &sa->sa_childsas, NULL, NULL); 123 sa_configure_iface(env, sa, 0); 124 sa_free_flows(env, &sa->sa_flows); 125 126 if (sa->sa_addrpool) { 127 (void)RB_REMOVE(iked_addrpool, &env->sc_addrpool, sa); 128 free(sa->sa_addrpool); 129 } 130 if (sa->sa_addrpool6) { 131 (void)RB_REMOVE(iked_addrpool6, &env->sc_addrpool6, sa); 132 free(sa->sa_addrpool6); 133 } 134 135 if (sa->sa_policy) { 136 TAILQ_REMOVE(&sa->sa_policy->pol_sapeers, sa, sa_peer_entry); 137 policy_unref(env, sa->sa_policy); 138 } 139 140 ikev2_msg_flushqueue(env, &sa->sa_requests); 141 ikev2_msg_flushqueue(env, &sa->sa_responses); 142 143 ibuf_free(sa->sa_inonce); 144 ibuf_free(sa->sa_rnonce); 145 146 group_free(sa->sa_dhgroup); 147 ibuf_free(sa->sa_dhiexchange); 148 ibuf_free(sa->sa_dhrexchange); 149 150 ibuf_free(sa->sa_simult); 151 152 hash_free(sa->sa_prf); 153 hash_free(sa->sa_integr); 154 cipher_free(sa->sa_encr); 155 156 ibuf_free(sa->sa_key_d); 157 ibuf_free(sa->sa_key_iauth); 158 ibuf_free(sa->sa_key_rauth); 159 ibuf_free(sa->sa_key_iencr); 160 ibuf_free(sa->sa_key_rencr); 161 ibuf_free(sa->sa_key_iprf); 162 ibuf_free(sa->sa_key_rprf); 163 164 ibuf_free(sa->sa_1stmsg); 165 ibuf_free(sa->sa_2ndmsg); 166 167 ibuf_free(sa->sa_iid.id_buf); 168 ibuf_free(sa->sa_rid.id_buf); 169 ibuf_free(sa->sa_icert.id_buf); 170 ibuf_free(sa->sa_rcert.id_buf); 171 for (i = 0; i < IKED_SCERT_MAX; i++) 172 ibuf_free(sa->sa_scert[i].id_buf); 173 ibuf_free(sa->sa_localauth.id_buf); 174 ibuf_free(sa->sa_peerauth.id_buf); 175 176 ibuf_free(sa->sa_eap.id_buf); 177 free(sa->sa_eapid); 178 ibuf_free(sa->sa_eapmsk); 179 180 free(sa->sa_cp_addr); 181 free(sa->sa_cp_addr6); 182 free(sa->sa_cp_dns); 183 184 free(sa->sa_tag); 185 186 if (sa->sa_state == IKEV2_STATE_ESTABLISHED) 187 ikestat_dec(env, ikes_sa_established_current); 188 ikestat_inc(env, ikes_sa_removed); 189 190 free(sa); 191} 192 193struct iked_policy * 194config_new_policy(struct iked *env) 195{ 196 struct iked_policy *pol; 197 198 if ((pol = calloc(1, sizeof(*pol))) == NULL) 199 return (NULL); 200 201 /* XXX caller does this again */ 202 TAILQ_INIT(&pol->pol_proposals); 203 TAILQ_INIT(&pol->pol_sapeers); 204 TAILQ_INIT(&pol->pol_tssrc); 205 TAILQ_INIT(&pol->pol_tsdst); 206 RB_INIT(&pol->pol_flows); 207 208 return (pol); 209} 210 211void 212config_free_policy(struct iked *env, struct iked_policy *pol) 213{ 214 struct iked_sa *sa; 215 struct iked_ts *tsi; 216 217 if (pol->pol_flags & IKED_POLICY_REFCNT) 218 goto remove; 219 220 /* 221 * Remove policy from the sc_policies list, but increment 222 * refcount for every SA linked for the policy. 223 */ 224 pol->pol_flags |= IKED_POLICY_REFCNT; 225 226 TAILQ_REMOVE(&env->sc_policies, pol, pol_entry); 227 228 TAILQ_FOREACH(sa, &pol->pol_sapeers, sa_peer_entry) { 229 if (sa->sa_policy == pol) 230 policy_ref(env, pol); 231 else 232 log_warnx("%s: ERROR: sa_policy %p != pol %p", 233 __func__, sa->sa_policy, pol); 234 } 235 236 if (pol->pol_refcnt) 237 return; 238 239 remove: 240 while ((tsi = TAILQ_FIRST(&pol->pol_tssrc))) { 241 TAILQ_REMOVE(&pol->pol_tssrc, tsi, ts_entry); 242 free(tsi); 243 } 244 while ((tsi = TAILQ_FIRST(&pol->pol_tsdst))) { 245 TAILQ_REMOVE(&pol->pol_tsdst, tsi, ts_entry); 246 free(tsi); 247 } 248 config_free_proposals(&pol->pol_proposals, 0); 249 config_free_flows(env, &pol->pol_flows); 250 free(pol); 251} 252 253struct iked_proposal * 254config_add_proposal(struct iked_proposals *head, unsigned int id, 255 unsigned int proto) 256{ 257 struct iked_proposal *pp; 258 259 TAILQ_FOREACH(pp, head, prop_entry) { 260 if (pp->prop_protoid == proto && 261 pp->prop_id == id) 262 return (pp); 263 } 264 265 if ((pp = calloc(1, sizeof(*pp))) == NULL) 266 return (NULL); 267 268 pp->prop_protoid = proto; 269 pp->prop_id = id; 270 271 TAILQ_INSERT_TAIL(head, pp, prop_entry); 272 273 return (pp); 274} 275 276void 277config_free_proposal(struct iked_proposals *head, struct iked_proposal *prop) 278{ 279 TAILQ_REMOVE(head, prop, prop_entry); 280 if (prop->prop_nxforms) 281 free(prop->prop_xforms); 282 free(prop); 283} 284 285void 286config_free_proposals(struct iked_proposals *head, unsigned int proto) 287{ 288 struct iked_proposal *prop, *proptmp; 289 290 TAILQ_FOREACH_SAFE(prop, head, prop_entry, proptmp) { 291 /* Free any proposal or only selected SA proto */ 292 if (proto != 0 && prop->prop_protoid != proto) 293 continue; 294 295 log_debug("%s: free %p", __func__, prop); 296 297 config_free_proposal(head, prop); 298 } 299} 300 301void 302config_free_flows(struct iked *env, struct iked_flows *head) 303{ 304 struct iked_flow *flow; 305 306 while ((flow = RB_MIN(iked_flows, head))) { 307 log_debug("%s: free %p", __func__, flow); 308 RB_REMOVE(iked_flows, head, flow); 309 flow_free(flow); 310 } 311} 312 313void 314config_free_childsas(struct iked *env, struct iked_childsas *head, 315 struct iked_spi *peerspi, struct iked_spi *localspi) 316{ 317 struct iked_childsa *csa, *csatmp, *ipcomp; 318 319 if (localspi != NULL) 320 bzero(localspi, sizeof(*localspi)); 321 322 TAILQ_FOREACH_SAFE(csa, head, csa_entry, csatmp) { 323 if (peerspi != NULL) { 324 /* Only delete matching peer SPIs */ 325 if (peerspi->spi != csa->csa_peerspi) 326 continue; 327 328 /* Store assigned local SPI */ 329 if (localspi != NULL && localspi->spi == 0) 330 memcpy(localspi, &csa->csa_spi, 331 sizeof(*localspi)); 332 } 333 log_debug("%s: free %p", __func__, csa); 334 335 TAILQ_REMOVE(head, csa, csa_entry); 336 if (csa->csa_loaded) { 337 RB_REMOVE(iked_activesas, &env->sc_activesas, csa); 338 (void)pfkey_sa_delete(env, csa); 339 } 340 if ((ipcomp = csa->csa_bundled) != NULL) { 341 log_debug("%s: free IPCOMP %p", __func__, ipcomp); 342 if (ipcomp->csa_loaded) 343 (void)pfkey_sa_delete(env, ipcomp); 344 childsa_free(ipcomp); 345 } 346 childsa_free(csa); 347 ikestat_inc(env, ikes_csa_removed); 348 } 349} 350 351int 352config_add_transform(struct iked_proposal *prop, unsigned int type, 353 unsigned int id, unsigned int length, unsigned int keylength) 354{ 355 struct iked_transform *xform; 356 struct iked_constmap *map = NULL; 357 int score = 1; 358 unsigned int i; 359 360 switch (type) { 361 case IKEV2_XFORMTYPE_ENCR: 362 map = ikev2_xformencr_map; 363 break; 364 case IKEV2_XFORMTYPE_PRF: 365 map = ikev2_xformprf_map; 366 break; 367 case IKEV2_XFORMTYPE_INTEGR: 368 map = ikev2_xformauth_map; 369 break; 370 case IKEV2_XFORMTYPE_DH: 371 map = ikev2_xformdh_map; 372 break; 373 case IKEV2_XFORMTYPE_ESN: 374 map = ikev2_xformesn_map; 375 break; 376 default: 377 log_debug("%s: invalid transform type %d", __func__, type); 378 return (-2); 379 } 380 381 for (i = 0; i < prop->prop_nxforms; i++) { 382 xform = prop->prop_xforms + i; 383 if (xform->xform_type == type && 384 xform->xform_id == id && 385 xform->xform_length == length) 386 return (0); 387 } 388 389 for (i = 0; i < prop->prop_nxforms; i++) { 390 xform = prop->prop_xforms + i; 391 if (xform->xform_type == type) { 392 switch (type) { 393 case IKEV2_XFORMTYPE_ENCR: 394 case IKEV2_XFORMTYPE_INTEGR: 395 score += 3; 396 break; 397 case IKEV2_XFORMTYPE_DH: 398 score += 2; 399 break; 400 default: 401 score += 1; 402 break; 403 } 404 } 405 } 406 407 if ((xform = reallocarray(prop->prop_xforms, 408 prop->prop_nxforms + 1, sizeof(*xform))) == NULL) { 409 return (-1); 410 } 411 412 prop->prop_xforms = xform; 413 xform = prop->prop_xforms + prop->prop_nxforms++; 414 bzero(xform, sizeof(*xform)); 415 416 xform->xform_type = type; 417 xform->xform_id = id; 418 xform->xform_length = length; 419 xform->xform_keylength = keylength; 420 xform->xform_score = score; 421 xform->xform_map = map; 422 423 return (0); 424} 425 426struct iked_transform * 427config_findtransform_ext(struct iked_proposals *props, uint8_t type, int id, 428 unsigned int proto) 429{ 430 struct iked_proposal *prop; 431 struct iked_transform *xform; 432 unsigned int i; 433 434 /* Search of the first transform with the desired type */ 435 TAILQ_FOREACH(prop, props, prop_entry) { 436 /* Find any proposal or only selected SA proto */ 437 if (proto != 0 && prop->prop_protoid != proto) 438 continue; 439 for (i = 0; i < prop->prop_nxforms; i++) { 440 xform = prop->prop_xforms + i; 441 /* optional lookup of specific transform */ 442 if (id >= 0 && xform->xform_id != id) 443 continue; 444 if (xform->xform_type == type) 445 return (xform); 446 } 447 } 448 449 return (NULL); 450} 451 452struct iked_transform * 453config_findtransform(struct iked_proposals *props, uint8_t type, 454 unsigned int proto) 455{ 456 return config_findtransform_ext(props, type, -1, proto); 457} 458 459struct iked_user * 460config_new_user(struct iked *env, struct iked_user *new) 461{ 462 struct iked_user *usr, *old; 463 464 if ((usr = calloc(1, sizeof(*usr))) == NULL) 465 return (NULL); 466 467 memcpy(usr, new, sizeof(*usr)); 468 469 if ((old = RB_INSERT(iked_users, &env->sc_users, usr)) != NULL) { 470 /* Update the password of an existing user*/ 471 memcpy(old->usr_pass, new->usr_pass, IKED_PASSWORD_SIZE); 472 473 log_debug("%s: updating user %s", __func__, usr->usr_name); 474 freezero(usr, sizeof *usr); 475 476 return (old); 477 } 478 479 log_debug("%s: inserting new user %s", __func__, usr->usr_name); 480 return (usr); 481} 482 483/* 484 * Inter-process communication of configuration items. 485 */ 486 487int 488config_setcoupled(struct iked *env, unsigned int couple) 489{ 490 unsigned int type; 491 492 type = couple ? IMSG_CTL_COUPLE : IMSG_CTL_DECOUPLE; 493 proc_compose(&env->sc_ps, PROC_IKEV2, type, NULL, 0); 494 495 return (0); 496} 497 498int 499config_getcoupled(struct iked *env, unsigned int type) 500{ 501 return (pfkey_couple(env, &env->sc_sas, 502 type == IMSG_CTL_COUPLE ? 1 : 0)); 503} 504 505int 506config_setmode(struct iked *env, unsigned int passive) 507{ 508 unsigned int type; 509 510 /* 511 * In order to control the startup of the processes, 512 * the messages are sent in this order: 513 * PROC_PARENT -> PROC_CERT -> PROC_PARENT -> PROC_IKEV2 514 * so PROC_CERT is ready before PROC_IKEV2 is activated. 515 */ 516 type = passive ? IMSG_CTL_PASSIVE : IMSG_CTL_ACTIVE; 517 proc_compose(&env->sc_ps, PROC_CERT, type, NULL, 0); 518 519 return (0); 520} 521 522int 523config_getmode(struct iked *env, unsigned int type) 524{ 525 uint8_t old; 526 unsigned char *mode[] = { "active", "passive" }; 527 528 old = env->sc_passive ? 1 : 0; 529 env->sc_passive = type == IMSG_CTL_PASSIVE ? 1 : 0; 530 531 if (old == env->sc_passive) 532 return (0); 533 534 log_debug("%s: mode %s -> %s", __func__, 535 mode[old], mode[env->sc_passive]); 536 537 return (0); 538} 539 540int 541config_setreset(struct iked *env, unsigned int mode, enum privsep_procid id) 542{ 543 proc_compose(&env->sc_ps, id, IMSG_CTL_RESET, &mode, sizeof(mode)); 544 return (0); 545} 546 547int 548config_getreset(struct iked *env, struct imsg *imsg) 549{ 550 unsigned int mode; 551 552 IMSG_SIZE_CHECK(imsg, &mode); 553 memcpy(&mode, imsg->data, sizeof(mode)); 554 555 return (config_doreset(env, mode)); 556} 557 558int 559config_doreset(struct iked *env, unsigned int mode) 560{ 561 struct iked_policy *pol, *poltmp; 562 struct iked_sa *sa; 563 struct iked_user *usr; 564 565 if (mode == RESET_ALL || mode == RESET_POLICY) { 566 log_debug("%s: flushing policies", __func__); 567 TAILQ_FOREACH_SAFE(pol, &env->sc_policies, pol_entry, poltmp) { 568 config_free_policy(env, pol); 569 } 570 } 571 572 if (mode == RESET_ALL || mode == RESET_SA) { 573 log_debug("%s: flushing SAs", __func__); 574 while ((sa = RB_MIN(iked_sas, &env->sc_sas))) { 575 /* for RESET_SA we try send a DELETE */ 576 if (mode == RESET_ALL || 577 ikev2_ike_sa_delete(env, sa) != 0) { 578 RB_REMOVE(iked_sas, &env->sc_sas, sa); 579 if (sa->sa_dstid_entry_valid) 580 sa_dstid_remove(env, sa); 581 config_free_sa(env, sa); 582 } 583 } 584 } 585 586 if (mode == RESET_ALL || mode == RESET_USER) { 587 log_debug("%s: flushing users", __func__); 588 while ((usr = RB_MIN(iked_users, &env->sc_users))) { 589 RB_REMOVE(iked_users, &env->sc_users, usr); 590 free(usr); 591 } 592 } 593 594 return (0); 595} 596 597/* 598 * The first call of this function sets the UDP socket for IKEv2. 599 * The second call is optional, setting the UDP socket used for NAT-T. 600 */ 601int 602config_setsocket(struct iked *env, struct sockaddr_storage *ss, 603 in_port_t port, enum privsep_procid id) 604{ 605 int s; 606 607 if ((s = udp_bind((struct sockaddr *)ss, port)) == -1) 608 return (-1); 609 proc_compose_imsg(&env->sc_ps, id, -1, 610 IMSG_UDP_SOCKET, -1, s, ss, sizeof(*ss)); 611 return (0); 612} 613 614int 615config_getsocket(struct iked *env, struct imsg *imsg, 616 void (*cb)(int, short, void *)) 617{ 618 struct iked_socket *sock, **sock0 = NULL, **sock1 = NULL; 619 620 if ((sock = calloc(1, sizeof(*sock))) == NULL) 621 fatal("config_getsocket: calloc"); 622 623 IMSG_SIZE_CHECK(imsg, &sock->sock_addr); 624 625 memcpy(&sock->sock_addr, imsg->data, sizeof(sock->sock_addr)); 626 sock->sock_fd = imsg_get_fd(imsg); 627 sock->sock_env = env; 628 629 log_debug("%s: received socket fd %d", __func__, sock->sock_fd); 630 631 switch (sock->sock_addr.ss_family) { 632 case AF_INET: 633 sock0 = &env->sc_sock4[0]; 634 sock1 = &env->sc_sock4[1]; 635 break; 636 case AF_INET6: 637 sock0 = &env->sc_sock6[0]; 638 sock1 = &env->sc_sock6[1]; 639 break; 640 default: 641 fatal("config_getsocket: socket af: %u", 642 sock->sock_addr.ss_family); 643 /* NOTREACHED */ 644 } 645 if (*sock0 == NULL) 646 *sock0 = sock; 647 else if (*sock1 == NULL) 648 *sock1 = sock; 649 else 650 fatalx("%s: too many call", __func__); 651 652 event_set(&sock->sock_ev, sock->sock_fd, 653 EV_READ|EV_PERSIST, cb, sock); 654 655 return (0); 656} 657 658void 659config_enablesocket(struct iked *env) 660{ 661 struct iked_socket *sock; 662 size_t i; 663 664 for (i = 0; i < nitems(env->sc_sock4); i++) 665 if ((sock = env->sc_sock4[i]) != NULL) 666 event_add(&sock->sock_ev, NULL); 667 for (i = 0; i < nitems(env->sc_sock6); i++) 668 if ((sock = env->sc_sock6[i]) != NULL) 669 event_add(&sock->sock_ev, NULL); 670} 671 672int 673config_setpfkey(struct iked *env) 674{ 675 int s; 676 677 if ((s = pfkey_socket(env)) == -1) 678 return (-1); 679 proc_compose_imsg(&env->sc_ps, PROC_IKEV2, -1, 680 IMSG_PFKEY_SOCKET, -1, s, NULL, 0); 681 return (0); 682} 683 684int 685config_getpfkey(struct iked *env, struct imsg *imsg) 686{ 687 int fd = imsg_get_fd(imsg); 688 689 log_debug("%s: received pfkey fd %d", __func__, fd); 690 pfkey_init(env, fd); 691 return (0); 692} 693 694int 695config_setuser(struct iked *env, struct iked_user *usr, enum privsep_procid id) 696{ 697 if (env->sc_opts & IKED_OPT_NOACTION) { 698 print_user(usr); 699 return (0); 700 } 701 702 proc_compose(&env->sc_ps, id, IMSG_CFG_USER, usr, sizeof(*usr)); 703 return (0); 704} 705 706int 707config_getuser(struct iked *env, struct imsg *imsg) 708{ 709 struct iked_user usr; 710 int ret = -1; 711 712 IMSG_SIZE_CHECK(imsg, &usr); 713 memcpy(&usr, imsg->data, sizeof(usr)); 714 715 if (config_new_user(env, &usr) != NULL) { 716 print_user(&usr); 717 ret = 0; 718 } 719 720 explicit_bzero(&usr, sizeof(usr)); 721 return (ret); 722} 723 724int 725config_setpolicy(struct iked *env, struct iked_policy *pol, 726 enum privsep_procid id) 727{ 728 struct iked_proposal *prop; 729 struct iked_transform *xform; 730 size_t iovcnt, j, c = 0; 731 struct iovec iov[IOV_MAX]; 732 733 iovcnt = 1; 734 TAILQ_FOREACH(prop, &pol->pol_proposals, prop_entry) { 735 iovcnt += prop->prop_nxforms + 1; 736 } 737 738 if (iovcnt > IOV_MAX) { 739 log_warn("%s: too many proposals", __func__); 740 return (-1); 741 } 742 743 iov[c].iov_base = pol; 744 iov[c++].iov_len = sizeof(*pol); 745 746 TAILQ_FOREACH(prop, &pol->pol_proposals, prop_entry) { 747 iov[c].iov_base = prop; 748 iov[c++].iov_len = sizeof(*prop); 749 750 for (j = 0; j < prop->prop_nxforms; j++) { 751 xform = prop->prop_xforms + j; 752 753 iov[c].iov_base = xform; 754 iov[c++].iov_len = sizeof(*xform); 755 } 756 } 757 758 print_policy(pol); 759 760 if (env->sc_opts & IKED_OPT_NOACTION) 761 return (0); 762 763 if (proc_composev(&env->sc_ps, id, IMSG_CFG_POLICY, iov, 764 iovcnt) == -1) { 765 log_debug("%s: proc_composev failed", __func__); 766 return (-1); 767 } 768 769 return (0); 770} 771 772int 773config_setflow(struct iked *env, struct iked_policy *pol, 774 enum privsep_procid id) 775{ 776 struct iked_flow *flow; 777 struct iovec iov[2]; 778 779 if (env->sc_opts & IKED_OPT_NOACTION) 780 return (0); 781 782 RB_FOREACH(flow, iked_flows, &pol->pol_flows) { 783 iov[0].iov_base = &pol->pol_id; 784 iov[0].iov_len = sizeof(pol->pol_id); 785 iov[1].iov_base = flow; 786 iov[1].iov_len = sizeof(*flow); 787 788 if (proc_composev(&env->sc_ps, id, IMSG_CFG_FLOW, 789 iov, 2) == -1) { 790 log_debug("%s: proc_composev failed", __func__); 791 return (-1); 792 } 793 } 794 795 return (0); 796} 797 798int 799config_getpolicy(struct iked *env, struct imsg *imsg) 800{ 801 struct iked_policy *pol; 802 struct iked_proposal pp, *prop; 803 struct iked_transform xf; 804 off_t offset = 0; 805 unsigned int i, j; 806 uint8_t *buf = (uint8_t *)imsg->data; 807 808 IMSG_SIZE_CHECK(imsg, pol); 809 log_debug("%s: received policy", __func__); 810 811 if ((pol = config_new_policy(NULL)) == NULL) 812 fatal("config_getpolicy: new policy"); 813 814 memcpy(pol, buf, sizeof(*pol)); 815 offset += sizeof(*pol); 816 817 TAILQ_INIT(&pol->pol_tssrc); 818 TAILQ_INIT(&pol->pol_tsdst); 819 TAILQ_INIT(&pol->pol_proposals); 820 TAILQ_INIT(&pol->pol_sapeers); 821 RB_INIT(&pol->pol_flows); 822 823 for (i = 0; i < pol->pol_nproposals; i++) { 824 memcpy(&pp, buf + offset, sizeof(pp)); 825 offset += sizeof(pp); 826 827 if ((prop = config_add_proposal(&pol->pol_proposals, 828 pp.prop_id, pp.prop_protoid)) == NULL) 829 fatal("config_getpolicy: add proposal"); 830 831 for (j = 0; j < pp.prop_nxforms; j++) { 832 memcpy(&xf, buf + offset, sizeof(xf)); 833 offset += sizeof(xf); 834 835 if (config_add_transform(prop, xf.xform_type, 836 xf.xform_id, xf.xform_length, 837 xf.xform_keylength) != 0) 838 fatal("config_getpolicy: add transform"); 839 } 840 } 841 842 /* Flows are sent separately */ 843 pol->pol_nflows = 0; 844 845 TAILQ_INSERT_TAIL(&env->sc_policies, pol, pol_entry); 846 847 if (pol->pol_flags & IKED_POLICY_DEFAULT) { 848 /* Only one default policy, just free/unref the old one */ 849 if (env->sc_defaultcon != NULL) 850 config_free_policy(env, env->sc_defaultcon); 851 env->sc_defaultcon = pol; 852 } 853 854 return (0); 855} 856 857int 858config_getflow(struct iked *env, struct imsg *imsg) 859{ 860 struct iked_policy *pol; 861 struct iked_flow *flow; 862 off_t offset = 0; 863 unsigned int id; 864 uint8_t *buf = (uint8_t *)imsg->data; 865 866 if (IMSG_DATA_SIZE(imsg) < sizeof(id)) 867 fatalx("bad length imsg received"); 868 869 memcpy(&id, buf, sizeof(id)); 870 offset += sizeof(id); 871 872 TAILQ_FOREACH(pol, &env->sc_policies, pol_entry) { 873 if (pol->pol_id == id) 874 break; 875 } 876 if (pol == NULL) { 877 log_warnx("%s: unknown policy %u", __func__, id); 878 return (-1); 879 } 880 881 if ((flow = calloc(1, sizeof(*flow))) == NULL) 882 fatal("config_getpolicy: new flow"); 883 884 memcpy(flow, buf + offset, sizeof(*flow)); 885 886 if (RB_INSERT(iked_flows, &pol->pol_flows, flow)) { 887 log_warnx("%s: received duplicate flow", __func__); 888 free(flow); 889 return (-1); 890 } 891 pol->pol_nflows++; 892 893 return (0); 894} 895 896int 897config_setcompile(struct iked *env, enum privsep_procid id) 898{ 899 if (env->sc_opts & IKED_OPT_NOACTION) 900 return (0); 901 902 proc_compose(&env->sc_ps, id, IMSG_COMPILE, NULL, 0); 903 return (0); 904} 905 906int 907config_getcompile(struct iked *env) 908{ 909 /* 910 * Do any necessary steps after configuration, for now we 911 * only need to compile the skip steps. 912 */ 913 policy_calc_skip_steps(&env->sc_policies); 914 915 log_debug("%s: compilation done", __func__); 916 return (0); 917} 918 919int 920config_setstatic(struct iked *env) 921{ 922 proc_compose(&env->sc_ps, PROC_IKEV2, IMSG_CTL_STATIC, 923 &env->sc_static, sizeof(env->sc_static)); 924 proc_compose(&env->sc_ps, PROC_CERT, IMSG_CTL_STATIC, 925 &env->sc_static, sizeof(env->sc_static)); 926 return (0); 927} 928 929int 930config_getstatic(struct iked *env, struct imsg *imsg) 931{ 932 IMSG_SIZE_CHECK(imsg, &env->sc_static); 933 memcpy(&env->sc_static, imsg->data, sizeof(env->sc_static)); 934 935 log_debug("%s: dpd_check_interval %llu", __func__, env->sc_alive_timeout); 936 log_debug("%s: %senforcesingleikesa", __func__, 937 env->sc_enforcesingleikesa ? "" : "no "); 938 log_debug("%s: %sfragmentation", __func__, env->sc_frag ? "" : "no "); 939 log_debug("%s: %smobike", __func__, env->sc_mobike ? "" : "no "); 940 log_debug("%s: nattport %u", __func__, env->sc_nattport); 941 log_debug("%s: %sstickyaddress", __func__, 942 env->sc_stickyaddress ? "" : "no "); 943 944 ikev2_reset_alive_timer(env); 945 946 return (0); 947} 948 949int 950config_setocsp(struct iked *env) 951{ 952 struct iovec iov[3]; 953 int iovcnt = 0; 954 955 if (env->sc_opts & IKED_OPT_NOACTION) 956 return (0); 957 958 iov[0].iov_base = &env->sc_ocsp_tolerate; 959 iov[0].iov_len = sizeof(env->sc_ocsp_tolerate); 960 iovcnt++; 961 iov[1].iov_base = &env->sc_ocsp_maxage; 962 iov[1].iov_len = sizeof(env->sc_ocsp_maxage); 963 iovcnt++; 964 if (env->sc_ocsp_url) { 965 iov[2].iov_base = env->sc_ocsp_url; 966 iov[2].iov_len = strlen(env->sc_ocsp_url); 967 iovcnt++; 968 } 969 return (proc_composev(&env->sc_ps, PROC_CERT, IMSG_OCSP_CFG, 970 iov, iovcnt)); 971} 972 973int 974config_getocsp(struct iked *env, struct imsg *imsg) 975{ 976 size_t have, need; 977 uint8_t *ptr; 978 979 free(env->sc_ocsp_url); 980 ptr = (uint8_t *)imsg->data; 981 have = IMSG_DATA_SIZE(imsg); 982 983 /* get tolerate */ 984 need = sizeof(env->sc_ocsp_tolerate); 985 if (have < need) 986 fatalx("bad 'tolerate' length imsg received"); 987 memcpy(&env->sc_ocsp_tolerate, ptr, need); 988 ptr += need; 989 have -= need; 990 991 /* get maxage */ 992 need = sizeof(env->sc_ocsp_maxage); 993 if (have < need) 994 fatalx("bad 'maxage' length imsg received"); 995 memcpy(&env->sc_ocsp_maxage, ptr, need); 996 ptr += need; 997 have -= need; 998 999 /* get url */ 1000 if (have > 0) 1001 env->sc_ocsp_url = get_string(ptr, have); 1002 else 1003 env->sc_ocsp_url = NULL; 1004 log_debug("%s: ocsp_url %s tolerate %ld maxage %ld", __func__, 1005 env->sc_ocsp_url ? env->sc_ocsp_url : "none", 1006 env->sc_ocsp_tolerate, env->sc_ocsp_maxage); 1007 return (0); 1008} 1009 1010int 1011config_setkeys(struct iked *env) 1012{ 1013 FILE *fp = NULL; 1014 EVP_PKEY *key = NULL; 1015 struct iked_id privkey; 1016 struct iked_id pubkey; 1017 struct iovec iov[2]; 1018 int ret = -1; 1019 1020 memset(&privkey, 0, sizeof(privkey)); 1021 memset(&pubkey, 0, sizeof(pubkey)); 1022 1023 /* Read private key */ 1024 if ((fp = fopen(IKED_PRIVKEY, "r")) == NULL) { 1025 log_warn("%s: failed to open private key", __func__); 1026 goto done; 1027 } 1028 1029 if ((key = PEM_read_PrivateKey(fp, NULL, NULL, NULL)) == NULL) { 1030 log_warnx("%s: failed to read private key", __func__); 1031 goto done; 1032 } 1033 1034 if (ca_privkey_serialize(key, &privkey) != 0) { 1035 log_warnx("%s: failed to serialize private key", __func__); 1036 goto done; 1037 } 1038 if (ca_pubkey_serialize(key, &pubkey) != 0) { 1039 log_warnx("%s: failed to serialize public key", __func__); 1040 goto done; 1041 } 1042 1043 iov[0].iov_base = &privkey; 1044 iov[0].iov_len = sizeof(privkey); 1045 iov[1].iov_base = ibuf_data(privkey.id_buf); 1046 iov[1].iov_len = ibuf_size(privkey.id_buf); 1047 1048 if (proc_composev(&env->sc_ps, PROC_CERT, IMSG_PRIVKEY, iov, 2) == -1) { 1049 log_warnx("%s: failed to send private key", __func__); 1050 goto done; 1051 } 1052 1053 iov[0].iov_base = &pubkey; 1054 iov[0].iov_len = sizeof(pubkey); 1055 iov[1].iov_base = ibuf_data(pubkey.id_buf); 1056 iov[1].iov_len = ibuf_size(pubkey.id_buf); 1057 1058 if (proc_composev(&env->sc_ps, PROC_CERT, IMSG_PUBKEY, iov, 2) == -1) { 1059 log_warnx("%s: failed to send public key", __func__); 1060 goto done; 1061 } 1062 1063 ret = 0; 1064 done: 1065 if (fp != NULL) 1066 fclose(fp); 1067 1068 ibuf_free(pubkey.id_buf); 1069 ibuf_free(privkey.id_buf); 1070 EVP_PKEY_free(key); 1071 1072 return (ret); 1073} 1074 1075int 1076config_getkey(struct iked *env, struct imsg *imsg) 1077{ 1078 size_t len; 1079 struct iked_id id; 1080 1081 len = IMSG_DATA_SIZE(imsg); 1082 if (len <= sizeof(id)) 1083 fatalx("%s: invalid key message", __func__); 1084 1085 memcpy(&id, imsg->data, sizeof(id)); 1086 if ((id.id_buf = ibuf_new((uint8_t *)imsg->data + sizeof(id), 1087 len - sizeof(id))) == NULL) 1088 fatalx("%s: failed to get key", __func__); 1089 1090 explicit_bzero(imsg->data, len); 1091 ca_getkey(&env->sc_ps, &id, imsg->hdr.type); 1092 1093 return (0); 1094} 1095