ldapclient.c revision 290940
1290931Srodrigc/* $OpenBSD: ldapclient.c,v 1.31 2014/11/16 23:24:44 tedu Exp $ */ 2290931Srodrigc/* $FreeBSD: head/usr.sbin/ypldap/ldapclient.c 290940 2015-11-16 17:11:11Z rodrigc $ */ 3290931Srodrigc 4290931Srodrigc/* 5290931Srodrigc * Copyright (c) 2008 Alexander Schrijver <aschrijver@openbsd.org> 6290931Srodrigc * Copyright (c) 2008 Pierre-Yves Ritschard <pyr@openbsd.org> 7290931Srodrigc * 8290931Srodrigc * Permission to use, copy, modify, and distribute this software for any 9290931Srodrigc * purpose with or without fee is hereby granted, provided that the above 10290931Srodrigc * copyright notice and this permission notice appear in all copies. 11290931Srodrigc * 12290931Srodrigc * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 13290931Srodrigc * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 14290931Srodrigc * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 15290931Srodrigc * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 16290931Srodrigc * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 17290931Srodrigc * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 18290931Srodrigc * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 19290931Srodrigc */ 20290931Srodrigc 21290931Srodrigc#include <sys/types.h> 22290931Srodrigc#include <sys/param.h> 23290931Srodrigc#include <sys/queue.h> 24290931Srodrigc#include <sys/socket.h> 25290931Srodrigc#include <sys/tree.h> 26290931Srodrigc 27290931Srodrigc#include <netinet/in.h> 28290931Srodrigc#include <arpa/inet.h> 29290931Srodrigc 30290931Srodrigc#include <netdb.h> 31290931Srodrigc#include <errno.h> 32290931Srodrigc#include <err.h> 33290931Srodrigc#include <event.h> 34290931Srodrigc#include <fcntl.h> 35290931Srodrigc#include <unistd.h> 36290931Srodrigc#include <pwd.h> 37290931Srodrigc#include <stdio.h> 38290931Srodrigc#include <stdlib.h> 39290931Srodrigc#include <string.h> 40290931Srodrigc 41290931Srodrigc#include "aldap.h" 42290931Srodrigc#include "ypldap.h" 43290931Srodrigc 44290931Srodrigcvoid client_sig_handler(int, short, void *); 45290931Srodrigcvoid client_dispatch_dns(int, short, void *); 46290931Srodrigcvoid client_dispatch_parent(int, short, void *); 47290931Srodrigcvoid client_shutdown(void); 48290931Srodrigcvoid client_connect(int, short, void *); 49290931Srodrigcvoid client_configure(struct env *); 50290931Srodrigcvoid client_periodic_update(int, short, void *); 51290931Srodrigcint client_build_req(struct idm *, struct idm_req *, struct aldap_message *, 52290931Srodrigc int, int); 53290931Srodrigcint client_search_idm(struct env *, struct idm *, struct aldap *, 54290931Srodrigc char **, char *, int, int, enum imsg_type); 55290931Srodrigcint client_try_idm(struct env *, struct idm *); 56290931Srodrigcint client_addr_init(struct idm *); 57290931Srodrigcint client_addr_free(struct idm *); 58290931Srodrigc 59290931Srodrigcstruct aldap *client_aldap_open(struct ypldap_addr *); 60290931Srodrigc 61290931Srodrigc/* 62290931Srodrigc * dummy wrapper to provide aldap_init with its fd's. 63290931Srodrigc */ 64290931Srodrigcstruct aldap * 65290931Srodrigcclient_aldap_open(struct ypldap_addr *addr) 66290931Srodrigc{ 67290931Srodrigc int fd = -1; 68290931Srodrigc struct ypldap_addr *p; 69290931Srodrigc 70290931Srodrigc for (p = addr; p != NULL; p = p->next) { 71290931Srodrigc char hbuf[NI_MAXHOST], sbuf[NI_MAXSERV]; 72290931Srodrigc struct sockaddr *sa = (struct sockaddr *)&p->ss; 73290931Srodrigc 74290940Srodrigc if (getnameinfo(sa, sa->sa_len, hbuf, sizeof(hbuf), sbuf, 75290931Srodrigc sizeof(sbuf), NI_NUMERICHOST | NI_NUMERICSERV)) 76290931Srodrigc errx(1, "could not get numeric hostname"); 77290931Srodrigc 78290931Srodrigc if ((fd = socket(sa->sa_family, SOCK_STREAM, 0)) < 0) 79290931Srodrigc return NULL; 80290931Srodrigc 81290940Srodrigc if (connect(fd, sa, sa->sa_len) == 0) 82290931Srodrigc break; 83290931Srodrigc 84290931Srodrigc warn("connect to %s port %s (%s) failed", hbuf, sbuf, "tcp"); 85290931Srodrigc close(fd); 86290931Srodrigc } 87290931Srodrigc 88290931Srodrigc if (fd == -1) 89290931Srodrigc return NULL; 90290931Srodrigc 91290931Srodrigc return aldap_init(fd); 92290931Srodrigc} 93290931Srodrigc 94290931Srodrigcint 95290931Srodrigcclient_addr_init(struct idm *idm) 96290931Srodrigc{ 97290931Srodrigc struct sockaddr_in *sa_in; 98290931Srodrigc struct sockaddr_in6 *sa_in6; 99290931Srodrigc struct ypldap_addr *h; 100290931Srodrigc 101290931Srodrigc for (h = idm->idm_addr; h != NULL; h = h->next) { 102290931Srodrigc switch (h->ss.ss_family) { 103290931Srodrigc case AF_INET: 104290931Srodrigc sa_in = (struct sockaddr_in *)&h->ss; 105290931Srodrigc if (ntohs(sa_in->sin_port) == 0) 106290931Srodrigc sa_in->sin_port = htons(LDAP_PORT); 107290931Srodrigc idm->idm_state = STATE_DNS_DONE; 108290931Srodrigc break; 109290931Srodrigc case AF_INET6: 110290931Srodrigc sa_in6 = (struct sockaddr_in6 *)&h->ss; 111290931Srodrigc if (ntohs(sa_in6->sin6_port) == 0) 112290931Srodrigc sa_in6->sin6_port = htons(LDAP_PORT); 113290931Srodrigc idm->idm_state = STATE_DNS_DONE; 114290931Srodrigc break; 115290931Srodrigc default: 116290931Srodrigc fatalx("king bula sez: wrong AF in client_addr_init"); 117290931Srodrigc /* not reached */ 118290931Srodrigc } 119290931Srodrigc } 120290931Srodrigc 121290931Srodrigc return (0); 122290931Srodrigc} 123290931Srodrigc 124290931Srodrigcint 125290931Srodrigcclient_addr_free(struct idm *idm) 126290931Srodrigc{ 127290931Srodrigc struct ypldap_addr *h, *p; 128290931Srodrigc 129290931Srodrigc if (idm->idm_addr == NULL) 130290931Srodrigc return (-1); 131290931Srodrigc 132290931Srodrigc for (h = idm->idm_addr; h != NULL; h = p) { 133290931Srodrigc p = h->next; 134290931Srodrigc free(h); 135290931Srodrigc } 136290931Srodrigc 137290931Srodrigc idm->idm_addr = NULL; 138290931Srodrigc 139290931Srodrigc return (0); 140290931Srodrigc} 141290931Srodrigc 142290931Srodrigcvoid 143290931Srodrigcclient_sig_handler(int sig, short event, void *p) 144290931Srodrigc{ 145290931Srodrigc switch (sig) { 146290931Srodrigc case SIGINT: 147290931Srodrigc case SIGTERM: 148290931Srodrigc client_shutdown(); 149290931Srodrigc break; 150290931Srodrigc default: 151290931Srodrigc fatalx("unexpected signal"); 152290931Srodrigc } 153290931Srodrigc} 154290931Srodrigc 155290931Srodrigcvoid 156290931Srodrigcclient_dispatch_dns(int fd, short events, void *p) 157290931Srodrigc{ 158290931Srodrigc struct imsg imsg; 159290931Srodrigc u_int16_t dlen; 160290931Srodrigc u_char *data; 161290931Srodrigc struct ypldap_addr *h; 162290931Srodrigc int n, wait_cnt = 0; 163290931Srodrigc struct idm *idm; 164290931Srodrigc int shut = 0; 165290931Srodrigc 166290931Srodrigc struct env *env = p; 167290931Srodrigc struct imsgev *iev = env->sc_iev_dns; 168290931Srodrigc struct imsgbuf *ibuf = &iev->ibuf; 169290931Srodrigc 170290931Srodrigc if ((events & (EV_READ | EV_WRITE)) == 0) 171290931Srodrigc fatalx("unknown event"); 172290931Srodrigc 173290931Srodrigc if (events & EV_READ) { 174290931Srodrigc if ((n = imsg_read(ibuf)) == -1) 175290931Srodrigc fatal("imsg_read error"); 176290931Srodrigc if (n == 0) 177290931Srodrigc shut = 1; 178290931Srodrigc } 179290931Srodrigc if (events & EV_WRITE) { 180290931Srodrigc if ((n = msgbuf_write(&ibuf->w)) == -1 && errno != EAGAIN) 181290931Srodrigc fatal("msgbuf_write"); 182290931Srodrigc if (n == 0) 183290931Srodrigc shut = 1; 184290931Srodrigc goto done; 185290931Srodrigc } 186290931Srodrigc 187290931Srodrigc for (;;) { 188290931Srodrigc if ((n = imsg_get(ibuf, &imsg)) == -1) 189290931Srodrigc fatal("client_dispatch_dns: imsg_get error"); 190290931Srodrigc if (n == 0) 191290931Srodrigc break; 192290931Srodrigc 193290931Srodrigc switch (imsg.hdr.type) { 194290931Srodrigc case IMSG_HOST_DNS: 195290931Srodrigc TAILQ_FOREACH(idm, &env->sc_idms, idm_entry) 196290931Srodrigc if (idm->idm_id == imsg.hdr.peerid) 197290931Srodrigc break; 198290931Srodrigc if (idm == NULL) { 199290931Srodrigc log_warnx("IMSG_HOST_DNS with invalid peerID"); 200290931Srodrigc break; 201290931Srodrigc } 202290931Srodrigc if (idm->idm_addr != NULL) { 203290931Srodrigc log_warnx("IMSG_HOST_DNS but addr != NULL!"); 204290931Srodrigc break; 205290931Srodrigc } 206290931Srodrigc 207290931Srodrigc dlen = imsg.hdr.len - IMSG_HEADER_SIZE; 208290931Srodrigc if (dlen == 0) { /* no data -> temp error */ 209290931Srodrigc idm->idm_state = STATE_DNS_TEMPFAIL; 210290931Srodrigc break; 211290931Srodrigc } 212290931Srodrigc 213290931Srodrigc data = (u_char *)imsg.data; 214290931Srodrigc while (dlen >= sizeof(struct sockaddr_storage)) { 215290931Srodrigc if ((h = calloc(1, sizeof(struct ypldap_addr))) == 216290931Srodrigc NULL) 217290931Srodrigc fatal(NULL); 218290931Srodrigc memcpy(&h->ss, data, sizeof(h->ss)); 219290931Srodrigc 220290931Srodrigc if (idm->idm_addr == NULL) 221290931Srodrigc h->next = NULL; 222290931Srodrigc else 223290931Srodrigc h->next = idm->idm_addr; 224290931Srodrigc 225290931Srodrigc idm->idm_addr = h; 226290931Srodrigc 227290931Srodrigc data += sizeof(h->ss); 228290931Srodrigc dlen -= sizeof(h->ss); 229290931Srodrigc } 230290931Srodrigc if (dlen != 0) 231290931Srodrigc fatalx("IMSG_HOST_DNS: dlen != 0"); 232290931Srodrigc 233290931Srodrigc client_addr_init(idm); 234290931Srodrigc 235290931Srodrigc break; 236290931Srodrigc default: 237290931Srodrigc break; 238290931Srodrigc } 239290931Srodrigc imsg_free(&imsg); 240290931Srodrigc } 241290931Srodrigc 242290931Srodrigc TAILQ_FOREACH(idm, &env->sc_idms, idm_entry) { 243290931Srodrigc if (client_try_idm(env, idm) == -1) 244290931Srodrigc idm->idm_state = STATE_LDAP_FAIL; 245290931Srodrigc 246290931Srodrigc if (idm->idm_state < STATE_LDAP_DONE) 247290931Srodrigc wait_cnt++; 248290931Srodrigc } 249290931Srodrigc if (wait_cnt == 0) 250290931Srodrigc imsg_compose_event(env->sc_iev, IMSG_END_UPDATE, 0, 0, -1, 251290931Srodrigc NULL, 0); 252290931Srodrigc 253290931Srodrigcdone: 254290931Srodrigc if (!shut) 255290931Srodrigc imsg_event_add(iev); 256290931Srodrigc else { 257290931Srodrigc /* this pipe is dead, so remove the event handler */ 258290931Srodrigc event_del(&iev->ev); 259290931Srodrigc event_loopexit(NULL); 260290931Srodrigc } 261290931Srodrigc} 262290931Srodrigc 263290931Srodrigcvoid 264290931Srodrigcclient_dispatch_parent(int fd, short events, void *p) 265290931Srodrigc{ 266290931Srodrigc int n; 267290931Srodrigc int shut = 0; 268290931Srodrigc struct imsg imsg; 269290931Srodrigc struct env *env = p; 270290931Srodrigc struct imsgev *iev = env->sc_iev; 271290931Srodrigc struct imsgbuf *ibuf = &iev->ibuf; 272290931Srodrigc 273290931Srodrigc if ((events & (EV_READ | EV_WRITE)) == 0) 274290931Srodrigc fatalx("unknown event"); 275290931Srodrigc 276290931Srodrigc if (events & EV_READ) { 277290931Srodrigc if ((n = imsg_read(ibuf)) == -1) 278290931Srodrigc fatal("imsg_read error"); 279290931Srodrigc if (n == 0) 280290931Srodrigc shut = 1; 281290931Srodrigc } 282290931Srodrigc if (events & EV_WRITE) { 283290931Srodrigc if ((n = msgbuf_write(&ibuf->w)) == -1 && errno != EAGAIN) 284290931Srodrigc fatal("msgbuf_write"); 285290931Srodrigc if (n == 0) 286290931Srodrigc shut = 1; 287290931Srodrigc goto done; 288290931Srodrigc } 289290931Srodrigc 290290931Srodrigc for (;;) { 291290931Srodrigc if ((n = imsg_get(ibuf, &imsg)) == -1) 292290931Srodrigc fatal("client_dispatch_parent: imsg_get error"); 293290931Srodrigc if (n == 0) 294290931Srodrigc break; 295290931Srodrigc 296290931Srodrigc switch (imsg.hdr.type) { 297290931Srodrigc case IMSG_CONF_START: { 298290931Srodrigc struct env params; 299290931Srodrigc 300290931Srodrigc if (env->sc_flags & F_CONFIGURING) { 301290931Srodrigc log_warnx("configuration already in progress"); 302290931Srodrigc break; 303290931Srodrigc } 304290931Srodrigc memcpy(¶ms, imsg.data, sizeof(params)); 305290931Srodrigc log_debug("configuration starting"); 306290931Srodrigc env->sc_flags |= F_CONFIGURING; 307290931Srodrigc purge_config(env); 308290931Srodrigc memcpy(&env->sc_conf_tv, ¶ms.sc_conf_tv, 309290931Srodrigc sizeof(env->sc_conf_tv)); 310290931Srodrigc env->sc_flags |= params.sc_flags; 311290931Srodrigc break; 312290931Srodrigc } 313290931Srodrigc case IMSG_CONF_IDM: { 314290931Srodrigc struct idm *idm; 315290931Srodrigc 316290931Srodrigc if (!(env->sc_flags & F_CONFIGURING)) 317290931Srodrigc break; 318290931Srodrigc if ((idm = calloc(1, sizeof(*idm))) == NULL) 319290931Srodrigc fatal(NULL); 320290931Srodrigc memcpy(idm, imsg.data, sizeof(*idm)); 321290931Srodrigc idm->idm_env = env; 322290931Srodrigc TAILQ_INSERT_TAIL(&env->sc_idms, idm, idm_entry); 323290931Srodrigc break; 324290931Srodrigc } 325290931Srodrigc case IMSG_CONF_END: 326290931Srodrigc env->sc_flags &= ~F_CONFIGURING; 327290931Srodrigc log_debug("applying configuration"); 328290931Srodrigc client_configure(env); 329290931Srodrigc break; 330290931Srodrigc default: 331290931Srodrigc log_debug("client_dispatch_parent: unexpect imsg %d", 332290931Srodrigc imsg.hdr.type); 333290931Srodrigc 334290931Srodrigc break; 335290931Srodrigc } 336290931Srodrigc imsg_free(&imsg); 337290931Srodrigc } 338290931Srodrigc 339290931Srodrigcdone: 340290931Srodrigc if (!shut) 341290931Srodrigc imsg_event_add(iev); 342290931Srodrigc else { 343290931Srodrigc /* this pipe is dead, so remove the event handler */ 344290931Srodrigc event_del(&iev->ev); 345290931Srodrigc event_loopexit(NULL); 346290931Srodrigc } 347290931Srodrigc} 348290931Srodrigc 349290931Srodrigcvoid 350290931Srodrigcclient_shutdown(void) 351290931Srodrigc{ 352290931Srodrigc log_info("ldap client exiting"); 353290931Srodrigc _exit(0); 354290931Srodrigc} 355290931Srodrigc 356290931Srodrigcpid_t 357290931Srodrigcldapclient(int pipe_main2client[2]) 358290931Srodrigc{ 359290931Srodrigc pid_t pid, dns_pid; 360290931Srodrigc int pipe_dns[2]; 361290931Srodrigc struct passwd *pw; 362290931Srodrigc struct event ev_sigint; 363290931Srodrigc struct event ev_sigterm; 364290931Srodrigc struct env env; 365290931Srodrigc 366290931Srodrigc switch (pid = fork()) { 367290931Srodrigc case -1: 368290931Srodrigc fatal("cannot fork"); 369290931Srodrigc break; 370290931Srodrigc case 0: 371290931Srodrigc break; 372290931Srodrigc default: 373290931Srodrigc return (pid); 374290931Srodrigc } 375290931Srodrigc 376290931Srodrigc bzero(&env, sizeof(env)); 377290931Srodrigc TAILQ_INIT(&env.sc_idms); 378290931Srodrigc 379290931Srodrigc if ((pw = getpwnam(YPLDAP_USER)) == NULL) 380290931Srodrigc fatal("getpwnam"); 381290931Srodrigc 382290931Srodrigc if (socketpair(AF_UNIX, SOCK_STREAM, PF_UNSPEC, pipe_dns) == -1) 383290931Srodrigc fatal("socketpair"); 384290931Srodrigc dns_pid = ypldap_dns(pipe_dns, pw); 385290931Srodrigc close(pipe_dns[1]); 386290931Srodrigc 387290931Srodrigc#ifndef DEBUG 388290931Srodrigc if (chroot(pw->pw_dir) == -1) 389290931Srodrigc fatal("chroot"); 390290931Srodrigc if (chdir("/") == -1) 391290931Srodrigc fatal("chdir"); 392290931Srodrigc#else 393290931Srodrigc#warning disabling chrooting in DEBUG mode 394290931Srodrigc#endif 395290931Srodrigc setproctitle("ldap client"); 396290931Srodrigc ypldap_process = PROC_CLIENT; 397290931Srodrigc 398290931Srodrigc#ifndef DEBUG 399290931Srodrigc if (setgroups(1, &pw->pw_gid) || 400290931Srodrigc setresgid(pw->pw_gid, pw->pw_gid, pw->pw_gid) || 401290931Srodrigc setresuid(pw->pw_uid, pw->pw_uid, pw->pw_uid)) 402290931Srodrigc fatal("cannot drop privileges"); 403290931Srodrigc#else 404290931Srodrigc#warning disabling privilege revocation in DEBUG mode 405290931Srodrigc#endif 406290931Srodrigc 407290931Srodrigc event_init(); 408290931Srodrigc signal(SIGPIPE, SIG_IGN); 409290931Srodrigc signal_set(&ev_sigint, SIGINT, client_sig_handler, NULL); 410290931Srodrigc signal_set(&ev_sigterm, SIGTERM, client_sig_handler, NULL); 411290931Srodrigc signal_add(&ev_sigint, NULL); 412290931Srodrigc signal_add(&ev_sigterm, NULL); 413290931Srodrigc 414290931Srodrigc close(pipe_main2client[0]); 415290931Srodrigc if ((env.sc_iev = calloc(1, sizeof(*env.sc_iev))) == NULL) 416290931Srodrigc fatal(NULL); 417290931Srodrigc if ((env.sc_iev_dns = calloc(1, sizeof(*env.sc_iev_dns))) == NULL) 418290931Srodrigc fatal(NULL); 419290931Srodrigc 420290931Srodrigc env.sc_iev->events = EV_READ; 421290931Srodrigc env.sc_iev->data = &env; 422290931Srodrigc imsg_init(&env.sc_iev->ibuf, pipe_main2client[1]); 423290931Srodrigc env.sc_iev->handler = client_dispatch_parent; 424290931Srodrigc event_set(&env.sc_iev->ev, env.sc_iev->ibuf.fd, env.sc_iev->events, 425290931Srodrigc env.sc_iev->handler, &env); 426290931Srodrigc event_add(&env.sc_iev->ev, NULL); 427290931Srodrigc 428290931Srodrigc env.sc_iev_dns->events = EV_READ; 429290931Srodrigc env.sc_iev_dns->data = &env; 430290931Srodrigc imsg_init(&env.sc_iev_dns->ibuf, pipe_dns[0]); 431290931Srodrigc env.sc_iev_dns->handler = client_dispatch_dns; 432290931Srodrigc event_set(&env.sc_iev_dns->ev, env.sc_iev_dns->ibuf.fd, 433290931Srodrigc env.sc_iev_dns->events, env.sc_iev_dns->handler, &env); 434290931Srodrigc event_add(&env.sc_iev_dns->ev, NULL); 435290931Srodrigc 436290931Srodrigc event_dispatch(); 437290931Srodrigc client_shutdown(); 438290931Srodrigc 439290931Srodrigc return (0); 440290931Srodrigc 441290931Srodrigc} 442290931Srodrigc 443290931Srodrigcint 444290931Srodrigcclient_build_req(struct idm *idm, struct idm_req *ir, struct aldap_message *m, 445290931Srodrigc int min_attr, int max_attr) 446290931Srodrigc{ 447290931Srodrigc char **ldap_attrs; 448290931Srodrigc int i, k; 449290931Srodrigc 450290931Srodrigc bzero(ir, sizeof(*ir)); 451290931Srodrigc for (i = min_attr; i < max_attr; i++) { 452290931Srodrigc if (idm->idm_flags & F_FIXED_ATTR(i)) { 453290931Srodrigc if (strlcat(ir->ir_line, idm->idm_attrs[i], 454290931Srodrigc sizeof(ir->ir_line)) >= sizeof(ir->ir_line)) 455290931Srodrigc /* 456290931Srodrigc * entry yields a line > 1024, trash it. 457290931Srodrigc */ 458290931Srodrigc return (-1); 459290931Srodrigc 460290931Srodrigc if (i == ATTR_UID) { 461290931Srodrigc ir->ir_key.ik_uid = strtonum( 462290931Srodrigc idm->idm_attrs[i], 0, 463290931Srodrigc UID_MAX, NULL); 464290931Srodrigc } else if (i == ATTR_GR_GID) { 465290931Srodrigc ir->ir_key.ik_gid = strtonum( 466290931Srodrigc idm->idm_attrs[i], 0, 467290931Srodrigc GID_MAX, NULL); 468290931Srodrigc } 469290931Srodrigc } else if (idm->idm_list & F_LIST(i)) { 470290931Srodrigc aldap_match_attr(m, idm->idm_attrs[i], &ldap_attrs); 471290931Srodrigc for (k = 0; k >= 0 && ldap_attrs && ldap_attrs[k] != NULL; k++) { 472290931Srodrigc /* XXX: Fail when attributes have illegal characters e.g. ',' */ 473290931Srodrigc if (strlcat(ir->ir_line, ldap_attrs[k], 474290931Srodrigc sizeof(ir->ir_line)) >= sizeof(ir->ir_line)) 475290931Srodrigc continue; 476290931Srodrigc if (ldap_attrs[k+1] != NULL) 477290931Srodrigc if (strlcat(ir->ir_line, ",", 478290931Srodrigc sizeof(ir->ir_line)) 479290931Srodrigc >= sizeof(ir->ir_line)) { 480290931Srodrigc aldap_free_attr(ldap_attrs); 481290931Srodrigc return (-1); 482290931Srodrigc } 483290931Srodrigc } 484290931Srodrigc aldap_free_attr(ldap_attrs); 485290931Srodrigc } else { 486290931Srodrigc if (aldap_match_attr(m, idm->idm_attrs[i], &ldap_attrs) == -1) 487290931Srodrigc return (-1); 488290931Srodrigc if (ldap_attrs[0] == NULL) 489290931Srodrigc return (-1); 490290931Srodrigc if (strlcat(ir->ir_line, ldap_attrs[0], 491290931Srodrigc sizeof(ir->ir_line)) >= sizeof(ir->ir_line)) { 492290931Srodrigc aldap_free_attr(ldap_attrs); 493290931Srodrigc return (-1); 494290931Srodrigc } 495290931Srodrigc if (i == ATTR_UID) { 496290931Srodrigc ir->ir_key.ik_uid = strtonum( 497290931Srodrigc ldap_attrs[0], 0, UID_MAX, NULL); 498290931Srodrigc } else if (i == ATTR_GR_GID) { 499290931Srodrigc ir->ir_key.ik_uid = strtonum( 500290931Srodrigc ldap_attrs[0], 0, GID_MAX, NULL); 501290931Srodrigc } 502290931Srodrigc aldap_free_attr(ldap_attrs); 503290931Srodrigc } 504290931Srodrigc 505290931Srodrigc if (i + 1 != max_attr) 506290931Srodrigc if (strlcat(ir->ir_line, ":", 507290931Srodrigc sizeof(ir->ir_line)) >= sizeof(ir->ir_line)) 508290931Srodrigc return (-1); 509290931Srodrigc } 510290931Srodrigc 511290931Srodrigc return (0); 512290931Srodrigc} 513290931Srodrigc 514290931Srodrigcint 515290931Srodrigcclient_search_idm(struct env *env, struct idm *idm, struct aldap *al, 516290931Srodrigc char **attrs, char *filter, int min_attr, int max_attr, 517290931Srodrigc enum imsg_type type) 518290931Srodrigc{ 519290931Srodrigc struct idm_req ir; 520290931Srodrigc struct aldap_message *m; 521290931Srodrigc struct aldap_page_control *pg = NULL; 522290931Srodrigc const char *errstr; 523290931Srodrigc char *dn; 524290931Srodrigc 525290931Srodrigc dn = idm->idm_basedn; 526290931Srodrigc if (type == IMSG_GRP_ENTRY && idm->idm_groupdn[0] != '\0') 527290931Srodrigc dn = idm->idm_groupdn; 528290931Srodrigc 529290931Srodrigc do { 530290931Srodrigc if (aldap_search(al, dn, LDAP_SCOPE_SUBTREE, 531290931Srodrigc filter, attrs, 0, 0, 0, pg) == -1) { 532290931Srodrigc aldap_get_errno(al, &errstr); 533290931Srodrigc log_debug("%s", errstr); 534290931Srodrigc return (-1); 535290931Srodrigc } 536290931Srodrigc 537290931Srodrigc if (pg != NULL) { 538290931Srodrigc aldap_freepage(pg); 539290931Srodrigc pg = NULL; 540290931Srodrigc } 541290931Srodrigc 542290931Srodrigc while ((m = aldap_parse(al)) != NULL) { 543290931Srodrigc if (al->msgid != m->msgid) { 544290931Srodrigc goto fail; 545290931Srodrigc } 546290931Srodrigc 547290931Srodrigc if (m->message_type == LDAP_RES_SEARCH_RESULT) { 548290931Srodrigc if (m->page != NULL && m->page->cookie_len != 0) 549290931Srodrigc pg = m->page; 550290931Srodrigc else 551290931Srodrigc pg = NULL; 552290931Srodrigc 553290931Srodrigc aldap_freemsg(m); 554290931Srodrigc break; 555290931Srodrigc } 556290931Srodrigc 557290931Srodrigc if (m->message_type != LDAP_RES_SEARCH_ENTRY) { 558290931Srodrigc goto fail; 559290931Srodrigc } 560290931Srodrigc 561290931Srodrigc if (client_build_req(idm, &ir, m, min_attr, max_attr) == 0) 562290931Srodrigc imsg_compose_event(env->sc_iev, type, 0, 0, -1, 563290931Srodrigc &ir, sizeof(ir)); 564290931Srodrigc 565290931Srodrigc aldap_freemsg(m); 566290931Srodrigc } 567290931Srodrigc } while (pg != NULL); 568290931Srodrigc 569290931Srodrigc return (0); 570290931Srodrigc 571290931Srodrigcfail: 572290931Srodrigc aldap_freemsg(m); 573290931Srodrigc if (pg != NULL) { 574290931Srodrigc aldap_freepage(pg); 575290931Srodrigc } 576290931Srodrigc 577290931Srodrigc return (-1); 578290931Srodrigc} 579290931Srodrigc 580290931Srodrigcint 581290931Srodrigcclient_try_idm(struct env *env, struct idm *idm) 582290931Srodrigc{ 583290931Srodrigc const char *where; 584290931Srodrigc char *attrs[ATTR_MAX+1]; 585290931Srodrigc int i, j; 586290931Srodrigc struct aldap_message *m; 587290931Srodrigc struct aldap *al; 588290931Srodrigc 589290931Srodrigc where = "connect"; 590290931Srodrigc if ((al = client_aldap_open(idm->idm_addr)) == NULL) 591290931Srodrigc return (-1); 592290931Srodrigc 593290931Srodrigc if (idm->idm_flags & F_NEEDAUTH) { 594290931Srodrigc where = "binding"; 595290931Srodrigc if (aldap_bind(al, idm->idm_binddn, idm->idm_bindcred) == -1) 596290931Srodrigc goto bad; 597290931Srodrigc 598290931Srodrigc where = "parsing"; 599290931Srodrigc if ((m = aldap_parse(al)) == NULL) 600290931Srodrigc goto bad; 601290931Srodrigc where = "verifying msgid"; 602290931Srodrigc if (al->msgid != m->msgid) { 603290931Srodrigc aldap_freemsg(m); 604290931Srodrigc goto bad; 605290931Srodrigc } 606290931Srodrigc aldap_freemsg(m); 607290931Srodrigc } 608290931Srodrigc 609290931Srodrigc bzero(attrs, sizeof(attrs)); 610290931Srodrigc for (i = 0, j = 0; i < ATTR_MAX; i++) { 611290931Srodrigc if (idm->idm_flags & F_FIXED_ATTR(i)) 612290931Srodrigc continue; 613290931Srodrigc attrs[j++] = idm->idm_attrs[i]; 614290931Srodrigc } 615290931Srodrigc attrs[j] = NULL; 616290931Srodrigc 617290931Srodrigc /* 618290931Srodrigc * build password line. 619290931Srodrigc */ 620290931Srodrigc where = "search"; 621290931Srodrigc log_debug("searching password entries"); 622290931Srodrigc if (client_search_idm(env, idm, al, attrs, 623290931Srodrigc idm->idm_filters[FILTER_USER], 0, ATTR_MAX, IMSG_PW_ENTRY) == -1) 624290931Srodrigc goto bad; 625290931Srodrigc 626290931Srodrigc bzero(attrs, sizeof(attrs)); 627290931Srodrigc for (i = ATTR_GR_MIN, j = 0; i < ATTR_GR_MAX; i++) { 628290931Srodrigc if (idm->idm_flags & F_FIXED_ATTR(i)) 629290931Srodrigc continue; 630290931Srodrigc attrs[j++] = idm->idm_attrs[i]; 631290931Srodrigc } 632290931Srodrigc attrs[j] = NULL; 633290931Srodrigc 634290931Srodrigc /* 635290931Srodrigc * build group line. 636290931Srodrigc */ 637290931Srodrigc where = "search"; 638290931Srodrigc log_debug("searching group entries"); 639290931Srodrigc if (client_search_idm(env, idm, al, attrs, 640290931Srodrigc idm->idm_filters[FILTER_GROUP], ATTR_GR_MIN, ATTR_GR_MAX, 641290931Srodrigc IMSG_GRP_ENTRY) == -1) 642290931Srodrigc goto bad; 643290931Srodrigc 644290931Srodrigc aldap_close(al); 645290931Srodrigc 646290931Srodrigc idm->idm_state = STATE_LDAP_DONE; 647290931Srodrigc 648290931Srodrigc return (0); 649290931Srodrigcbad: 650290931Srodrigc aldap_close(al); 651290931Srodrigc log_debug("directory %s errored out in %s", idm->idm_name, where); 652290931Srodrigc return (-1); 653290931Srodrigc} 654290931Srodrigc 655290931Srodrigcvoid 656290931Srodrigcclient_periodic_update(int fd, short event, void *p) 657290931Srodrigc{ 658290931Srodrigc struct env *env = p; 659290931Srodrigc 660290931Srodrigc struct idm *idm; 661290931Srodrigc int fail_cnt = 0; 662290931Srodrigc 663290931Srodrigc /* If LDAP isn't finished, notify the master process to trash the 664290931Srodrigc * update. */ 665290931Srodrigc TAILQ_FOREACH(idm, &env->sc_idms, idm_entry) { 666290931Srodrigc if (idm->idm_state < STATE_LDAP_DONE) 667290931Srodrigc fail_cnt++; 668290931Srodrigc 669290931Srodrigc idm->idm_state = STATE_NONE; 670290931Srodrigc 671290931Srodrigc client_addr_free(idm); 672290931Srodrigc } 673290931Srodrigc if (fail_cnt > 0) { 674290931Srodrigc log_debug("trash the update"); 675290931Srodrigc imsg_compose_event(env->sc_iev, IMSG_TRASH_UPDATE, 0, 0, -1, 676290931Srodrigc NULL, 0); 677290931Srodrigc } 678290931Srodrigc 679290931Srodrigc client_configure(env); 680290931Srodrigc} 681290931Srodrigc 682290931Srodrigcvoid 683290931Srodrigcclient_configure(struct env *env) 684290931Srodrigc{ 685290931Srodrigc struct timeval tv; 686290931Srodrigc struct idm *idm; 687290931Srodrigc u_int16_t dlen; 688290931Srodrigc 689290931Srodrigc log_debug("connecting to directories"); 690290931Srodrigc 691290931Srodrigc imsg_compose_event(env->sc_iev, IMSG_START_UPDATE, 0, 0, -1, NULL, 0); 692290931Srodrigc 693290931Srodrigc /* Start the DNS lookups */ 694290931Srodrigc TAILQ_FOREACH(idm, &env->sc_idms, idm_entry) { 695290931Srodrigc dlen = strlen(idm->idm_name) + 1; 696290931Srodrigc imsg_compose_event(env->sc_iev_dns, IMSG_HOST_DNS, idm->idm_id, 697290931Srodrigc 0, -1, idm->idm_name, dlen); 698290931Srodrigc } 699290931Srodrigc 700290931Srodrigc tv.tv_sec = env->sc_conf_tv.tv_sec; 701290931Srodrigc tv.tv_usec = env->sc_conf_tv.tv_usec; 702290931Srodrigc evtimer_set(&env->sc_conf_ev, client_periodic_update, env); 703290931Srodrigc evtimer_add(&env->sc_conf_ev, &tv); 704290931Srodrigc} 705