1 /* $OpenBSD: ldapclient.c,v 1.48 2023/05/22 05:59:05 jmatthew Exp $ */ 2 3 /* 4 * Copyright (c) 2008 Alexander Schrijver <aschrijver@openbsd.org> 5 * Copyright (c) 2008 Pierre-Yves Ritschard <pyr@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/types.h> 21 #include <sys/queue.h> 22 #include <sys/socket.h> 23 #include <sys/tree.h> 24 25 #include <netinet/in.h> 26 #include <arpa/inet.h> 27 28 #include <netdb.h> 29 #include <errno.h> 30 #include <err.h> 31 #include <signal.h> 32 #include <event.h> 33 #include <fcntl.h> 34 #include <unistd.h> 35 #include <pwd.h> 36 #include <stdio.h> 37 #include <stdlib.h> 38 #include <string.h> 39 #include <limits.h> 40 41 #include "aldap.h" 42 #include "log.h" 43 #include "ypldap.h" 44 45 void client_sig_handler(int, short, void *); 46 void client_dispatch_dns(int, short, void *); 47 void client_dispatch_parent(int, short, void *); 48 void client_shutdown(void); 49 void client_connect(int, short, void *); 50 void client_configure(struct env *); 51 void client_periodic_update(int, short, void *); 52 int client_build_req(struct idm *, struct idm_req *, struct aldap_message *, 53 int, int); 54 int client_search_idm(struct env *, struct idm *, struct aldap *, 55 char **, char *, int, int, enum imsg_type); 56 int client_try_idm(struct env *, struct idm *, struct ypldap_addr *); 57 void client_addr_init(struct idm *); 58 int client_addr_free(struct idm *); 59 60 void 61 client_addr_init(struct idm *idm) 62 { 63 struct sockaddr_in *sa_in; 64 struct sockaddr_in6 *sa_in6; 65 struct ypldap_addr *h; 66 int defport; 67 68 if (idm->idm_port != 0) 69 defport = idm->idm_port; 70 else if (idm->idm_flags & F_SSL) 71 defport = LDAPS_PORT; 72 else 73 defport = LDAP_PORT; 74 75 TAILQ_FOREACH(h, &idm->idm_addr, next) { 76 switch (h->ss.ss_family) { 77 case AF_INET: 78 sa_in = (struct sockaddr_in *)&h->ss; 79 if (ntohs(sa_in->sin_port) == 0) 80 sa_in->sin_port = htons(defport); 81 idm->idm_state = STATE_DNS_DONE; 82 break; 83 case AF_INET6: 84 sa_in6 = (struct sockaddr_in6 *)&h->ss; 85 if (ntohs(sa_in6->sin6_port) == 0) 86 sa_in6->sin6_port = htons(defport); 87 idm->idm_state = STATE_DNS_DONE; 88 break; 89 default: 90 fatalx("king bula sez: wrong AF in client_addr_init"); 91 /* not reached */ 92 } 93 } 94 } 95 96 int 97 client_addr_free(struct idm *idm) 98 { 99 struct ypldap_addr *h; 100 101 while (!TAILQ_EMPTY(&idm->idm_addr)) { 102 h = TAILQ_FIRST(&idm->idm_addr); 103 TAILQ_REMOVE(&idm->idm_addr, h, next); 104 free(h); 105 } 106 107 return (0); 108 } 109 110 void 111 client_sig_handler(int sig, short event, void *p) 112 { 113 switch (sig) { 114 case SIGINT: 115 case SIGTERM: 116 client_shutdown(); 117 break; 118 default: 119 fatalx("unexpected signal"); 120 } 121 } 122 123 void 124 client_dispatch_dns(int fd, short events, void *p) 125 { 126 struct imsg imsg; 127 u_int16_t dlen; 128 u_char *data; 129 struct ypldap_addr *h; 130 int n, wait_cnt = 0; 131 struct idm *idm; 132 int shut = 0; 133 134 struct env *env = p; 135 struct imsgev *iev = env->sc_iev_dns; 136 struct imsgbuf *ibuf = &iev->ibuf; 137 138 if ((events & (EV_READ | EV_WRITE)) == 0) 139 fatalx("unknown event"); 140 141 if (events & EV_READ) { 142 if ((n = imsg_read(ibuf)) == -1 && errno != EAGAIN) 143 fatal("imsg_read error"); 144 if (n == 0) 145 shut = 1; 146 } 147 if (events & EV_WRITE) { 148 if ((n = msgbuf_write(&ibuf->w)) == -1 && errno != EAGAIN) 149 fatal("msgbuf_write"); 150 if (n == 0) 151 shut = 1; 152 goto done; 153 } 154 155 for (;;) { 156 if ((n = imsg_get(ibuf, &imsg)) == -1) 157 fatal("client_dispatch_dns: imsg_get error"); 158 if (n == 0) 159 break; 160 161 switch (imsg.hdr.type) { 162 case IMSG_HOST_DNS: 163 TAILQ_FOREACH(idm, &env->sc_idms, idm_entry) 164 if (idm->idm_id == imsg.hdr.peerid) 165 break; 166 if (idm == NULL) { 167 log_warnx("IMSG_HOST_DNS with invalid peerID"); 168 break; 169 } 170 if (!TAILQ_EMPTY(&idm->idm_addr)) { 171 log_warnx("IMSG_HOST_DNS but addrs set!"); 172 break; 173 } 174 175 dlen = imsg.hdr.len - IMSG_HEADER_SIZE; 176 if (dlen == 0) { /* no data -> temp error */ 177 idm->idm_state = STATE_DNS_TEMPFAIL; 178 break; 179 } 180 181 data = (u_char *)imsg.data; 182 while (dlen >= sizeof(struct sockaddr_storage)) { 183 if ((h = calloc(1, sizeof(*h))) == NULL) 184 fatal(NULL); 185 memcpy(&h->ss, data, sizeof(h->ss)); 186 TAILQ_INSERT_HEAD(&idm->idm_addr, h, next); 187 188 data += sizeof(h->ss); 189 dlen -= sizeof(h->ss); 190 } 191 if (dlen != 0) 192 fatalx("IMSG_HOST_DNS: dlen != 0"); 193 194 client_addr_init(idm); 195 196 break; 197 default: 198 break; 199 } 200 imsg_free(&imsg); 201 } 202 203 TAILQ_FOREACH(idm, &env->sc_idms, idm_entry) { 204 TAILQ_FOREACH(h, &idm->idm_addr, next) { 205 if (client_try_idm(env, idm, h) == -1) 206 idm->idm_state = STATE_LDAP_FAIL; 207 else 208 break; 209 } 210 211 if (idm->idm_state < STATE_LDAP_DONE) 212 wait_cnt++; 213 } 214 if (wait_cnt == 0) 215 imsg_compose_event(env->sc_iev, IMSG_END_UPDATE, 0, 0, -1, 216 NULL, 0); 217 218 done: 219 if (!shut) 220 imsg_event_add(iev); 221 else { 222 /* this pipe is dead, so remove the event handler */ 223 event_del(&iev->ev); 224 event_loopexit(NULL); 225 } 226 } 227 228 void 229 client_dispatch_parent(int fd, short events, void *p) 230 { 231 int n; 232 int shut = 0; 233 struct imsg imsg; 234 struct env *env = p; 235 struct imsgev *iev = env->sc_iev; 236 struct imsgbuf *ibuf = &iev->ibuf; 237 238 if ((events & (EV_READ | EV_WRITE)) == 0) 239 fatalx("unknown event"); 240 241 if (events & EV_READ) { 242 if ((n = imsg_read(ibuf)) == -1 && errno != EAGAIN) 243 fatal("imsg_read error"); 244 if (n == 0) 245 shut = 1; 246 } 247 if (events & EV_WRITE) { 248 if ((n = msgbuf_write(&ibuf->w)) == -1 && errno != EAGAIN) 249 fatal("msgbuf_write"); 250 if (n == 0) 251 shut = 1; 252 goto done; 253 } 254 255 for (;;) { 256 if ((n = imsg_get(ibuf, &imsg)) == -1) 257 fatal("client_dispatch_parent: imsg_get error"); 258 if (n == 0) 259 break; 260 261 switch (imsg.hdr.type) { 262 case IMSG_CONF_START: { 263 struct env params; 264 265 if (env->sc_flags & F_CONFIGURING) { 266 log_warnx("configuration already in progress"); 267 break; 268 } 269 memcpy(¶ms, imsg.data, sizeof(params)); 270 log_debug("configuration starting"); 271 env->sc_flags |= F_CONFIGURING; 272 purge_config(env); 273 memcpy(&env->sc_conf_tv, ¶ms.sc_conf_tv, 274 sizeof(env->sc_conf_tv)); 275 env->sc_flags |= params.sc_flags; 276 break; 277 } 278 case IMSG_CONF_IDM: { 279 struct idm *idm; 280 281 if (!(env->sc_flags & F_CONFIGURING)) 282 break; 283 if ((idm = calloc(1, sizeof(*idm))) == NULL) 284 fatal(NULL); 285 memcpy(idm, imsg.data, sizeof(*idm)); 286 idm->idm_env = env; 287 TAILQ_INSERT_TAIL(&env->sc_idms, idm, idm_entry); 288 break; 289 } 290 case IMSG_CONF_END: 291 env->sc_flags &= ~F_CONFIGURING; 292 log_debug("applying configuration"); 293 client_configure(env); 294 break; 295 default: 296 log_debug("client_dispatch_parent: unexpect imsg %d", 297 imsg.hdr.type); 298 299 break; 300 } 301 imsg_free(&imsg); 302 } 303 304 done: 305 if (!shut) 306 imsg_event_add(iev); 307 else { 308 /* this pipe is dead, so remove the event handler */ 309 event_del(&iev->ev); 310 event_loopexit(NULL); 311 } 312 } 313 314 void 315 client_shutdown(void) 316 { 317 log_info("ldap client exiting"); 318 _exit(0); 319 } 320 321 pid_t 322 ldapclient(int pipe_main2client[2]) 323 { 324 pid_t pid; 325 int pipe_dns[2]; 326 struct passwd *pw; 327 struct event ev_sigint; 328 struct event ev_sigterm; 329 struct env env; 330 331 switch (pid = fork()) { 332 case -1: 333 fatal("cannot fork"); 334 break; 335 case 0: 336 break; 337 default: 338 return (pid); 339 } 340 341 memset(&env, 0, sizeof(env)); 342 TAILQ_INIT(&env.sc_idms); 343 344 if ((pw = getpwnam(YPLDAP_USER)) == NULL) 345 fatal("getpwnam"); 346 347 if (socketpair(AF_UNIX, SOCK_STREAM, PF_UNSPEC, pipe_dns) == -1) 348 fatal("socketpair"); 349 ypldap_dns(pipe_dns, pw); 350 close(pipe_dns[1]); 351 352 #ifndef DEBUG 353 if (chroot(pw->pw_dir) == -1) 354 fatal("chroot"); 355 if (chdir("/") == -1) 356 fatal("chdir"); 357 #else 358 #warning disabling chrooting in DEBUG mode 359 #endif 360 setproctitle("ldap client"); 361 ypldap_process = PROC_CLIENT; 362 log_procname = log_procnames[ypldap_process]; 363 364 #ifndef DEBUG 365 if (setgroups(1, &pw->pw_gid) || 366 setresgid(pw->pw_gid, pw->pw_gid, pw->pw_gid) || 367 setresuid(pw->pw_uid, pw->pw_uid, pw->pw_uid)) 368 fatal("cannot drop privileges"); 369 #else 370 #warning disabling privilege revocation in DEBUG mode 371 #endif 372 373 if (pledge("stdio inet", NULL) == -1) 374 fatal("pledge"); 375 376 event_init(); 377 signal(SIGPIPE, SIG_IGN); 378 signal_set(&ev_sigint, SIGINT, client_sig_handler, NULL); 379 signal_set(&ev_sigterm, SIGTERM, client_sig_handler, NULL); 380 signal_add(&ev_sigint, NULL); 381 signal_add(&ev_sigterm, NULL); 382 383 close(pipe_main2client[0]); 384 if ((env.sc_iev = calloc(1, sizeof(*env.sc_iev))) == NULL) 385 fatal(NULL); 386 if ((env.sc_iev_dns = calloc(1, sizeof(*env.sc_iev_dns))) == NULL) 387 fatal(NULL); 388 389 env.sc_iev->events = EV_READ; 390 env.sc_iev->data = &env; 391 imsg_init(&env.sc_iev->ibuf, pipe_main2client[1]); 392 env.sc_iev->handler = client_dispatch_parent; 393 event_set(&env.sc_iev->ev, env.sc_iev->ibuf.fd, env.sc_iev->events, 394 env.sc_iev->handler, &env); 395 event_add(&env.sc_iev->ev, NULL); 396 397 env.sc_iev_dns->events = EV_READ; 398 env.sc_iev_dns->data = &env; 399 imsg_init(&env.sc_iev_dns->ibuf, pipe_dns[0]); 400 env.sc_iev_dns->handler = client_dispatch_dns; 401 event_set(&env.sc_iev_dns->ev, env.sc_iev_dns->ibuf.fd, 402 env.sc_iev_dns->events, env.sc_iev_dns->handler, &env); 403 event_add(&env.sc_iev_dns->ev, NULL); 404 405 event_dispatch(); 406 client_shutdown(); 407 408 return (0); 409 410 } 411 412 int 413 client_build_req(struct idm *idm, struct idm_req *ir, struct aldap_message *m, 414 int min_attr, int max_attr) 415 { 416 struct aldap_stringset *ldap_attrs; 417 int i; 418 size_t k; 419 420 memset(ir, 0, sizeof(*ir)); 421 for (i = min_attr; i < max_attr; i++) { 422 if (idm->idm_flags & F_FIXED_ATTR(i)) { 423 if (strlcat(ir->ir_line, idm->idm_attrs[i], 424 sizeof(ir->ir_line)) >= sizeof(ir->ir_line)) 425 /* 426 * entry yields a line > 1024, trash it. 427 */ 428 return (-1); 429 430 if (i == ATTR_UID) { 431 ir->ir_key.ik_uid = strtonum( 432 idm->idm_attrs[i], 0, 433 UID_MAX, NULL); 434 } else if (i == ATTR_GR_GID) { 435 ir->ir_key.ik_gid = strtonum( 436 idm->idm_attrs[i], 0, 437 GID_MAX, NULL); 438 } 439 } else if (idm->idm_list & F_LIST(i)) { 440 aldap_match_attr(m, idm->idm_attrs[i], &ldap_attrs); 441 for (k = 0; k >= 0 && ldap_attrs && k < ldap_attrs->len; k++) { 442 /* XXX: Fail when attributes have illegal characters e.g. ',' */ 443 if (strlcat(ir->ir_line, 444 ldap_attrs->str[k].ostr_val, 445 sizeof(ir->ir_line)) >= sizeof(ir->ir_line)) 446 continue; 447 if (k + 1 < ldap_attrs->len) 448 if (strlcat(ir->ir_line, ",", 449 sizeof(ir->ir_line)) 450 >= sizeof(ir->ir_line)) { 451 aldap_free_attr(ldap_attrs); 452 return (-1); 453 } 454 } 455 aldap_free_attr(ldap_attrs); 456 } else { 457 if (aldap_match_attr(m, idm->idm_attrs[i], &ldap_attrs) == -1) 458 return (-1); 459 if (strlcat(ir->ir_line, ldap_attrs->str[0].ostr_val, 460 sizeof(ir->ir_line)) >= sizeof(ir->ir_line)) { 461 aldap_free_attr(ldap_attrs); 462 return (-1); 463 } 464 if (i == ATTR_UID) { 465 ir->ir_key.ik_uid = strtonum( 466 ldap_attrs->str[0].ostr_val, 0, UID_MAX, 467 NULL); 468 } else if (i == ATTR_GR_GID) { 469 ir->ir_key.ik_uid = strtonum( 470 ldap_attrs->str[0].ostr_val, 0, GID_MAX, 471 NULL); 472 } 473 aldap_free_attr(ldap_attrs); 474 } 475 476 if (i + 1 != max_attr) 477 if (strlcat(ir->ir_line, ":", 478 sizeof(ir->ir_line)) >= sizeof(ir->ir_line)) 479 return (-1); 480 } 481 482 return (0); 483 } 484 485 int 486 client_search_idm(struct env *env, struct idm *idm, struct aldap *al, 487 char **attrs, char *filter, int min_attr, int max_attr, 488 enum imsg_type type) 489 { 490 struct idm_req ir; 491 struct aldap_message *m; 492 struct aldap_page_control *pg = NULL; 493 const char *errstr; 494 char *dn; 495 496 dn = idm->idm_basedn; 497 if (type == IMSG_GRP_ENTRY && idm->idm_groupdn[0] != '\0') 498 dn = idm->idm_groupdn; 499 500 do { 501 if (aldap_search(al, dn, LDAP_SCOPE_SUBTREE, 502 filter, attrs, 0, 0, 0, pg) == -1) { 503 aldap_get_errno(al, &errstr); 504 log_debug("%s", errstr); 505 return (-1); 506 } 507 508 if (pg != NULL) { 509 aldap_freepage(pg); 510 pg = NULL; 511 } 512 513 while ((m = aldap_parse(al)) != NULL) { 514 if (al->msgid != m->msgid) { 515 goto fail; 516 } 517 518 if (m->message_type == LDAP_RES_SEARCH_RESULT) { 519 if (m->page != NULL && m->page->cookie_len != 0) 520 pg = m->page; 521 else 522 pg = NULL; 523 524 aldap_freemsg(m); 525 break; 526 } 527 528 if (m->message_type != LDAP_RES_SEARCH_ENTRY) { 529 goto fail; 530 } 531 532 if (client_build_req(idm, &ir, m, min_attr, max_attr) == 0) 533 imsg_compose_event(env->sc_iev, type, 0, 0, -1, 534 &ir, sizeof(ir.ir_key) + 535 strlen(ir.ir_line) + 1); 536 537 aldap_freemsg(m); 538 } 539 } while (pg != NULL); 540 541 return (0); 542 543 fail: 544 aldap_freemsg(m); 545 if (pg != NULL) { 546 aldap_freepage(pg); 547 } 548 549 return (-1); 550 } 551 552 int 553 client_try_idm(struct env *env, struct idm *idm, struct ypldap_addr *addr) 554 { 555 const char *where; 556 char hbuf[NI_MAXHOST], sbuf[NI_MAXSERV]; 557 char *attrs[ATTR_MAX+1]; 558 int fd = -1; 559 int i, j; 560 struct sockaddr *sa = (struct sockaddr *)&addr->ss; 561 struct aldap_message *m; 562 struct aldap *al; 563 564 if (getnameinfo(sa, SA_LEN(sa), hbuf, sizeof(hbuf), sbuf, 565 sizeof(sbuf), NI_NUMERICHOST | NI_NUMERICSERV)) 566 errx(1, "could not get numeric hostname"); 567 568 where = "connect"; 569 if ((fd = socket(sa->sa_family, SOCK_STREAM, 0)) == -1) 570 return (-1); 571 572 if (connect(fd, sa, SA_LEN(sa)) != 0) { 573 log_warn("connect to %s port %s failed", hbuf, sbuf); 574 close(fd); 575 return (-1); 576 } 577 578 al = aldap_init(fd); 579 if (al == NULL) { 580 close(fd); 581 return (-1); 582 } 583 584 if (idm->idm_flags & F_STARTTLS) { 585 log_debug("requesting starttls"); 586 where = "starttls"; 587 if (aldap_req_starttls(al) == -1) 588 goto bad; 589 590 where = "parsing"; 591 if ((m = aldap_parse(al)) == NULL) 592 goto bad; 593 where = "verifying msgid"; 594 if (al->msgid != m->msgid) { 595 aldap_freemsg(m); 596 goto bad; 597 } 598 where = "starttls result"; 599 if (aldap_get_resultcode(m) != LDAP_SUCCESS) { 600 aldap_freemsg(m); 601 goto bad; 602 } 603 aldap_freemsg(m); 604 } 605 606 if (idm->idm_flags & (F_STARTTLS | F_SSL)) { 607 log_debug("starting tls"); 608 where = "enabling tls"; 609 if (aldap_tls(al, idm->idm_tls_config, idm->idm_name) < 0) { 610 const char *err; 611 aldap_get_errno(al, &err); 612 log_warnx("TLS handshake with %s(%s) failed: %s", 613 idm->idm_name, hbuf, err); 614 goto bad; 615 } 616 } 617 618 if (idm->idm_flags & F_NEEDAUTH) { 619 int rc; 620 621 where = "binding"; 622 if (idm->idm_bindext != 0) 623 rc = aldap_bind_sasl_external(al, idm->idm_bindextid); 624 else 625 rc = aldap_bind(al, idm->idm_binddn, idm->idm_bindcred); 626 if (rc == -1) 627 goto bad; 628 629 where = "parsing"; 630 if ((m = aldap_parse(al)) == NULL) 631 goto bad; 632 where = "verifying msgid"; 633 if (al->msgid != m->msgid) { 634 aldap_freemsg(m); 635 goto bad; 636 } 637 where = "bind response"; 638 rc = aldap_get_resultcode(m); 639 if (rc != LDAP_SUCCESS) { 640 log_warnx("LDAP bind with %s(%s) failed: result code" 641 " %d", idm->idm_name, hbuf, rc); 642 aldap_freemsg(m); 643 goto bad; 644 } 645 aldap_freemsg(m); 646 } 647 648 memset(attrs, 0, sizeof(attrs)); 649 for (i = 0, j = 0; i < ATTR_MAX; i++) { 650 if (idm->idm_flags & F_FIXED_ATTR(i)) 651 continue; 652 attrs[j++] = idm->idm_attrs[i]; 653 } 654 attrs[j] = NULL; 655 656 /* 657 * build password line. 658 */ 659 where = "search"; 660 log_debug("searching password entries"); 661 if (client_search_idm(env, idm, al, attrs, 662 idm->idm_filters[FILTER_USER], 0, ATTR_MAX, IMSG_PW_ENTRY) == -1) 663 goto bad; 664 665 memset(attrs, 0, sizeof(attrs)); 666 for (i = ATTR_GR_MIN, j = 0; i < ATTR_GR_MAX; i++) { 667 if (idm->idm_flags & F_FIXED_ATTR(i)) 668 continue; 669 attrs[j++] = idm->idm_attrs[i]; 670 } 671 attrs[j] = NULL; 672 673 /* 674 * build group line. 675 */ 676 where = "search"; 677 log_debug("searching group entries"); 678 if (client_search_idm(env, idm, al, attrs, 679 idm->idm_filters[FILTER_GROUP], ATTR_GR_MIN, ATTR_GR_MAX, 680 IMSG_GRP_ENTRY) == -1) 681 goto bad; 682 683 aldap_close(al); 684 685 idm->idm_state = STATE_LDAP_DONE; 686 687 return (0); 688 bad: 689 aldap_close(al); 690 log_debug("directory %s(%s) errored out in %s", idm->idm_name, hbuf, 691 where); 692 return (-1); 693 } 694 695 void 696 client_periodic_update(int fd, short event, void *p) 697 { 698 struct env *env = p; 699 700 struct idm *idm; 701 int fail_cnt = 0; 702 703 /* If LDAP isn't finished, notify the master process to trash the 704 * update. */ 705 TAILQ_FOREACH(idm, &env->sc_idms, idm_entry) { 706 if (idm->idm_state < STATE_LDAP_DONE) 707 fail_cnt++; 708 709 idm->idm_state = STATE_NONE; 710 711 client_addr_free(idm); 712 } 713 if (fail_cnt > 0) { 714 log_debug("trash the update"); 715 imsg_compose_event(env->sc_iev, IMSG_TRASH_UPDATE, 0, 0, -1, 716 NULL, 0); 717 } 718 719 client_configure(env); 720 } 721 722 void 723 client_configure(struct env *env) 724 { 725 struct timeval tv; 726 struct idm *idm; 727 u_int16_t dlen; 728 729 log_debug("connecting to directories"); 730 731 imsg_compose_event(env->sc_iev, IMSG_START_UPDATE, 0, 0, -1, NULL, 0); 732 733 /* Start the DNS lookups */ 734 TAILQ_FOREACH(idm, &env->sc_idms, idm_entry) { 735 dlen = strlen(idm->idm_name) + 1; 736 imsg_compose_event(env->sc_iev_dns, IMSG_HOST_DNS, idm->idm_id, 737 0, -1, idm->idm_name, dlen); 738 } 739 740 tv.tv_sec = env->sc_conf_tv.tv_sec; 741 tv.tv_usec = env->sc_conf_tv.tv_usec; 742 evtimer_set(&env->sc_conf_ev, client_periodic_update, env); 743 evtimer_add(&env->sc_conf_ev, &tv); 744 } 745