ldapclient.c revision 290942
1290931Srodrigc/* $OpenBSD: ldapclient.c,v 1.31 2014/11/16 23:24:44 tedu Exp $ */ 2290931Srodrigc/* $FreeBSD: head/usr.sbin/ypldap/ldapclient.c 290942 2015-11-16 17:28:04Z 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> 37290942Srodrigc#include <signal.h> 38290931Srodrigc#include <stdio.h> 39290931Srodrigc#include <stdlib.h> 40290931Srodrigc#include <string.h> 41290931Srodrigc 42290931Srodrigc#include "aldap.h" 43290931Srodrigc#include "ypldap.h" 44290931Srodrigc 45290931Srodrigcvoid client_sig_handler(int, short, void *); 46290931Srodrigcvoid client_dispatch_dns(int, short, void *); 47290931Srodrigcvoid client_dispatch_parent(int, short, void *); 48290931Srodrigcvoid client_shutdown(void); 49290931Srodrigcvoid client_connect(int, short, void *); 50290931Srodrigcvoid client_configure(struct env *); 51290931Srodrigcvoid client_periodic_update(int, short, void *); 52290931Srodrigcint client_build_req(struct idm *, struct idm_req *, struct aldap_message *, 53290931Srodrigc int, int); 54290931Srodrigcint client_search_idm(struct env *, struct idm *, struct aldap *, 55290931Srodrigc char **, char *, int, int, enum imsg_type); 56290931Srodrigcint client_try_idm(struct env *, struct idm *); 57290931Srodrigcint client_addr_init(struct idm *); 58290931Srodrigcint client_addr_free(struct idm *); 59290931Srodrigc 60290931Srodrigcstruct aldap *client_aldap_open(struct ypldap_addr *); 61290931Srodrigc 62290931Srodrigc/* 63290931Srodrigc * dummy wrapper to provide aldap_init with its fd's. 64290931Srodrigc */ 65290931Srodrigcstruct aldap * 66290931Srodrigcclient_aldap_open(struct ypldap_addr *addr) 67290931Srodrigc{ 68290931Srodrigc int fd = -1; 69290931Srodrigc struct ypldap_addr *p; 70290931Srodrigc 71290931Srodrigc for (p = addr; p != NULL; p = p->next) { 72290931Srodrigc char hbuf[NI_MAXHOST], sbuf[NI_MAXSERV]; 73290931Srodrigc struct sockaddr *sa = (struct sockaddr *)&p->ss; 74290931Srodrigc 75290940Srodrigc if (getnameinfo(sa, sa->sa_len, hbuf, sizeof(hbuf), sbuf, 76290931Srodrigc sizeof(sbuf), NI_NUMERICHOST | NI_NUMERICSERV)) 77290931Srodrigc errx(1, "could not get numeric hostname"); 78290931Srodrigc 79290931Srodrigc if ((fd = socket(sa->sa_family, SOCK_STREAM, 0)) < 0) 80290931Srodrigc return NULL; 81290931Srodrigc 82290940Srodrigc if (connect(fd, sa, sa->sa_len) == 0) 83290931Srodrigc break; 84290931Srodrigc 85290931Srodrigc warn("connect to %s port %s (%s) failed", hbuf, sbuf, "tcp"); 86290931Srodrigc close(fd); 87290931Srodrigc } 88290931Srodrigc 89290931Srodrigc if (fd == -1) 90290931Srodrigc return NULL; 91290931Srodrigc 92290931Srodrigc return aldap_init(fd); 93290931Srodrigc} 94290931Srodrigc 95290931Srodrigcint 96290931Srodrigcclient_addr_init(struct idm *idm) 97290931Srodrigc{ 98290931Srodrigc struct sockaddr_in *sa_in; 99290931Srodrigc struct sockaddr_in6 *sa_in6; 100290931Srodrigc struct ypldap_addr *h; 101290931Srodrigc 102290931Srodrigc for (h = idm->idm_addr; h != NULL; h = h->next) { 103290931Srodrigc switch (h->ss.ss_family) { 104290931Srodrigc case AF_INET: 105290931Srodrigc sa_in = (struct sockaddr_in *)&h->ss; 106290931Srodrigc if (ntohs(sa_in->sin_port) == 0) 107290931Srodrigc sa_in->sin_port = htons(LDAP_PORT); 108290931Srodrigc idm->idm_state = STATE_DNS_DONE; 109290931Srodrigc break; 110290931Srodrigc case AF_INET6: 111290931Srodrigc sa_in6 = (struct sockaddr_in6 *)&h->ss; 112290931Srodrigc if (ntohs(sa_in6->sin6_port) == 0) 113290931Srodrigc sa_in6->sin6_port = htons(LDAP_PORT); 114290931Srodrigc idm->idm_state = STATE_DNS_DONE; 115290931Srodrigc break; 116290931Srodrigc default: 117290931Srodrigc fatalx("king bula sez: wrong AF in client_addr_init"); 118290931Srodrigc /* not reached */ 119290931Srodrigc } 120290931Srodrigc } 121290931Srodrigc 122290931Srodrigc return (0); 123290931Srodrigc} 124290931Srodrigc 125290931Srodrigcint 126290931Srodrigcclient_addr_free(struct idm *idm) 127290931Srodrigc{ 128290931Srodrigc struct ypldap_addr *h, *p; 129290931Srodrigc 130290931Srodrigc if (idm->idm_addr == NULL) 131290931Srodrigc return (-1); 132290931Srodrigc 133290931Srodrigc for (h = idm->idm_addr; h != NULL; h = p) { 134290931Srodrigc p = h->next; 135290931Srodrigc free(h); 136290931Srodrigc } 137290931Srodrigc 138290931Srodrigc idm->idm_addr = NULL; 139290931Srodrigc 140290931Srodrigc return (0); 141290931Srodrigc} 142290931Srodrigc 143290931Srodrigcvoid 144290931Srodrigcclient_sig_handler(int sig, short event, void *p) 145290931Srodrigc{ 146290931Srodrigc switch (sig) { 147290931Srodrigc case SIGINT: 148290931Srodrigc case SIGTERM: 149290931Srodrigc client_shutdown(); 150290931Srodrigc break; 151290931Srodrigc default: 152290931Srodrigc fatalx("unexpected signal"); 153290931Srodrigc } 154290931Srodrigc} 155290931Srodrigc 156290931Srodrigcvoid 157290931Srodrigcclient_dispatch_dns(int fd, short events, void *p) 158290931Srodrigc{ 159290931Srodrigc struct imsg imsg; 160290931Srodrigc u_int16_t dlen; 161290931Srodrigc u_char *data; 162290931Srodrigc struct ypldap_addr *h; 163290931Srodrigc int n, wait_cnt = 0; 164290931Srodrigc struct idm *idm; 165290931Srodrigc int shut = 0; 166290931Srodrigc 167290931Srodrigc struct env *env = p; 168290931Srodrigc struct imsgev *iev = env->sc_iev_dns; 169290931Srodrigc struct imsgbuf *ibuf = &iev->ibuf; 170290931Srodrigc 171290931Srodrigc if ((events & (EV_READ | EV_WRITE)) == 0) 172290931Srodrigc fatalx("unknown event"); 173290931Srodrigc 174290931Srodrigc if (events & EV_READ) { 175290931Srodrigc if ((n = imsg_read(ibuf)) == -1) 176290931Srodrigc fatal("imsg_read error"); 177290931Srodrigc if (n == 0) 178290931Srodrigc shut = 1; 179290931Srodrigc } 180290931Srodrigc if (events & EV_WRITE) { 181290931Srodrigc if ((n = msgbuf_write(&ibuf->w)) == -1 && errno != EAGAIN) 182290931Srodrigc fatal("msgbuf_write"); 183290931Srodrigc if (n == 0) 184290931Srodrigc shut = 1; 185290931Srodrigc goto done; 186290931Srodrigc } 187290931Srodrigc 188290931Srodrigc for (;;) { 189290931Srodrigc if ((n = imsg_get(ibuf, &imsg)) == -1) 190290931Srodrigc fatal("client_dispatch_dns: imsg_get error"); 191290931Srodrigc if (n == 0) 192290931Srodrigc break; 193290931Srodrigc 194290931Srodrigc switch (imsg.hdr.type) { 195290931Srodrigc case IMSG_HOST_DNS: 196290931Srodrigc TAILQ_FOREACH(idm, &env->sc_idms, idm_entry) 197290931Srodrigc if (idm->idm_id == imsg.hdr.peerid) 198290931Srodrigc break; 199290931Srodrigc if (idm == NULL) { 200290931Srodrigc log_warnx("IMSG_HOST_DNS with invalid peerID"); 201290931Srodrigc break; 202290931Srodrigc } 203290931Srodrigc if (idm->idm_addr != NULL) { 204290931Srodrigc log_warnx("IMSG_HOST_DNS but addr != NULL!"); 205290931Srodrigc break; 206290931Srodrigc } 207290931Srodrigc 208290931Srodrigc dlen = imsg.hdr.len - IMSG_HEADER_SIZE; 209290931Srodrigc if (dlen == 0) { /* no data -> temp error */ 210290931Srodrigc idm->idm_state = STATE_DNS_TEMPFAIL; 211290931Srodrigc break; 212290931Srodrigc } 213290931Srodrigc 214290931Srodrigc data = (u_char *)imsg.data; 215290931Srodrigc while (dlen >= sizeof(struct sockaddr_storage)) { 216290931Srodrigc if ((h = calloc(1, sizeof(struct ypldap_addr))) == 217290931Srodrigc NULL) 218290931Srodrigc fatal(NULL); 219290931Srodrigc memcpy(&h->ss, data, sizeof(h->ss)); 220290931Srodrigc 221290931Srodrigc if (idm->idm_addr == NULL) 222290931Srodrigc h->next = NULL; 223290931Srodrigc else 224290931Srodrigc h->next = idm->idm_addr; 225290931Srodrigc 226290931Srodrigc idm->idm_addr = h; 227290931Srodrigc 228290931Srodrigc data += sizeof(h->ss); 229290931Srodrigc dlen -= sizeof(h->ss); 230290931Srodrigc } 231290931Srodrigc if (dlen != 0) 232290931Srodrigc fatalx("IMSG_HOST_DNS: dlen != 0"); 233290931Srodrigc 234290931Srodrigc client_addr_init(idm); 235290931Srodrigc 236290931Srodrigc break; 237290931Srodrigc default: 238290931Srodrigc break; 239290931Srodrigc } 240290931Srodrigc imsg_free(&imsg); 241290931Srodrigc } 242290931Srodrigc 243290931Srodrigc TAILQ_FOREACH(idm, &env->sc_idms, idm_entry) { 244290931Srodrigc if (client_try_idm(env, idm) == -1) 245290931Srodrigc idm->idm_state = STATE_LDAP_FAIL; 246290931Srodrigc 247290931Srodrigc if (idm->idm_state < STATE_LDAP_DONE) 248290931Srodrigc wait_cnt++; 249290931Srodrigc } 250290931Srodrigc if (wait_cnt == 0) 251290931Srodrigc imsg_compose_event(env->sc_iev, IMSG_END_UPDATE, 0, 0, -1, 252290931Srodrigc NULL, 0); 253290931Srodrigc 254290931Srodrigcdone: 255290931Srodrigc if (!shut) 256290931Srodrigc imsg_event_add(iev); 257290931Srodrigc else { 258290931Srodrigc /* this pipe is dead, so remove the event handler */ 259290931Srodrigc event_del(&iev->ev); 260290931Srodrigc event_loopexit(NULL); 261290931Srodrigc } 262290931Srodrigc} 263290931Srodrigc 264290931Srodrigcvoid 265290931Srodrigcclient_dispatch_parent(int fd, short events, void *p) 266290931Srodrigc{ 267290931Srodrigc int n; 268290931Srodrigc int shut = 0; 269290931Srodrigc struct imsg imsg; 270290931Srodrigc struct env *env = p; 271290931Srodrigc struct imsgev *iev = env->sc_iev; 272290931Srodrigc struct imsgbuf *ibuf = &iev->ibuf; 273290931Srodrigc 274290931Srodrigc if ((events & (EV_READ | EV_WRITE)) == 0) 275290931Srodrigc fatalx("unknown event"); 276290931Srodrigc 277290931Srodrigc if (events & EV_READ) { 278290931Srodrigc if ((n = imsg_read(ibuf)) == -1) 279290931Srodrigc fatal("imsg_read error"); 280290931Srodrigc if (n == 0) 281290931Srodrigc shut = 1; 282290931Srodrigc } 283290931Srodrigc if (events & EV_WRITE) { 284290931Srodrigc if ((n = msgbuf_write(&ibuf->w)) == -1 && errno != EAGAIN) 285290931Srodrigc fatal("msgbuf_write"); 286290931Srodrigc if (n == 0) 287290931Srodrigc shut = 1; 288290931Srodrigc goto done; 289290931Srodrigc } 290290931Srodrigc 291290931Srodrigc for (;;) { 292290931Srodrigc if ((n = imsg_get(ibuf, &imsg)) == -1) 293290931Srodrigc fatal("client_dispatch_parent: imsg_get error"); 294290931Srodrigc if (n == 0) 295290931Srodrigc break; 296290931Srodrigc 297290931Srodrigc switch (imsg.hdr.type) { 298290931Srodrigc case IMSG_CONF_START: { 299290931Srodrigc struct env params; 300290931Srodrigc 301290931Srodrigc if (env->sc_flags & F_CONFIGURING) { 302290931Srodrigc log_warnx("configuration already in progress"); 303290931Srodrigc break; 304290931Srodrigc } 305290931Srodrigc memcpy(¶ms, imsg.data, sizeof(params)); 306290931Srodrigc log_debug("configuration starting"); 307290931Srodrigc env->sc_flags |= F_CONFIGURING; 308290931Srodrigc purge_config(env); 309290931Srodrigc memcpy(&env->sc_conf_tv, ¶ms.sc_conf_tv, 310290931Srodrigc sizeof(env->sc_conf_tv)); 311290931Srodrigc env->sc_flags |= params.sc_flags; 312290931Srodrigc break; 313290931Srodrigc } 314290931Srodrigc case IMSG_CONF_IDM: { 315290931Srodrigc struct idm *idm; 316290931Srodrigc 317290931Srodrigc if (!(env->sc_flags & F_CONFIGURING)) 318290931Srodrigc break; 319290931Srodrigc if ((idm = calloc(1, sizeof(*idm))) == NULL) 320290931Srodrigc fatal(NULL); 321290931Srodrigc memcpy(idm, imsg.data, sizeof(*idm)); 322290931Srodrigc idm->idm_env = env; 323290931Srodrigc TAILQ_INSERT_TAIL(&env->sc_idms, idm, idm_entry); 324290931Srodrigc break; 325290931Srodrigc } 326290931Srodrigc case IMSG_CONF_END: 327290931Srodrigc env->sc_flags &= ~F_CONFIGURING; 328290931Srodrigc log_debug("applying configuration"); 329290931Srodrigc client_configure(env); 330290931Srodrigc break; 331290931Srodrigc default: 332290931Srodrigc log_debug("client_dispatch_parent: unexpect imsg %d", 333290931Srodrigc imsg.hdr.type); 334290931Srodrigc 335290931Srodrigc break; 336290931Srodrigc } 337290931Srodrigc imsg_free(&imsg); 338290931Srodrigc } 339290931Srodrigc 340290931Srodrigcdone: 341290931Srodrigc if (!shut) 342290931Srodrigc imsg_event_add(iev); 343290931Srodrigc else { 344290931Srodrigc /* this pipe is dead, so remove the event handler */ 345290931Srodrigc event_del(&iev->ev); 346290931Srodrigc event_loopexit(NULL); 347290931Srodrigc } 348290931Srodrigc} 349290931Srodrigc 350290931Srodrigcvoid 351290931Srodrigcclient_shutdown(void) 352290931Srodrigc{ 353290931Srodrigc log_info("ldap client exiting"); 354290931Srodrigc _exit(0); 355290931Srodrigc} 356290931Srodrigc 357290931Srodrigcpid_t 358290931Srodrigcldapclient(int pipe_main2client[2]) 359290931Srodrigc{ 360290931Srodrigc pid_t pid, dns_pid; 361290931Srodrigc int pipe_dns[2]; 362290931Srodrigc struct passwd *pw; 363290931Srodrigc struct event ev_sigint; 364290931Srodrigc struct event ev_sigterm; 365290931Srodrigc struct env env; 366290931Srodrigc 367290931Srodrigc switch (pid = fork()) { 368290931Srodrigc case -1: 369290931Srodrigc fatal("cannot fork"); 370290931Srodrigc break; 371290931Srodrigc case 0: 372290931Srodrigc break; 373290931Srodrigc default: 374290931Srodrigc return (pid); 375290931Srodrigc } 376290931Srodrigc 377290931Srodrigc bzero(&env, sizeof(env)); 378290931Srodrigc TAILQ_INIT(&env.sc_idms); 379290931Srodrigc 380290931Srodrigc if ((pw = getpwnam(YPLDAP_USER)) == NULL) 381290931Srodrigc fatal("getpwnam"); 382290931Srodrigc 383290931Srodrigc if (socketpair(AF_UNIX, SOCK_STREAM, PF_UNSPEC, pipe_dns) == -1) 384290931Srodrigc fatal("socketpair"); 385290931Srodrigc dns_pid = ypldap_dns(pipe_dns, pw); 386290931Srodrigc close(pipe_dns[1]); 387290931Srodrigc 388290931Srodrigc#ifndef DEBUG 389290931Srodrigc if (chroot(pw->pw_dir) == -1) 390290931Srodrigc fatal("chroot"); 391290931Srodrigc if (chdir("/") == -1) 392290931Srodrigc fatal("chdir"); 393290931Srodrigc#else 394290931Srodrigc#warning disabling chrooting in DEBUG mode 395290931Srodrigc#endif 396290931Srodrigc setproctitle("ldap client"); 397290931Srodrigc ypldap_process = PROC_CLIENT; 398290931Srodrigc 399290931Srodrigc#ifndef DEBUG 400290931Srodrigc if (setgroups(1, &pw->pw_gid) || 401290931Srodrigc setresgid(pw->pw_gid, pw->pw_gid, pw->pw_gid) || 402290931Srodrigc setresuid(pw->pw_uid, pw->pw_uid, pw->pw_uid)) 403290931Srodrigc fatal("cannot drop privileges"); 404290931Srodrigc#else 405290931Srodrigc#warning disabling privilege revocation in DEBUG mode 406290931Srodrigc#endif 407290931Srodrigc 408290931Srodrigc event_init(); 409290931Srodrigc signal(SIGPIPE, SIG_IGN); 410290931Srodrigc signal_set(&ev_sigint, SIGINT, client_sig_handler, NULL); 411290931Srodrigc signal_set(&ev_sigterm, SIGTERM, client_sig_handler, NULL); 412290931Srodrigc signal_add(&ev_sigint, NULL); 413290931Srodrigc signal_add(&ev_sigterm, NULL); 414290931Srodrigc 415290931Srodrigc close(pipe_main2client[0]); 416290931Srodrigc if ((env.sc_iev = calloc(1, sizeof(*env.sc_iev))) == NULL) 417290931Srodrigc fatal(NULL); 418290931Srodrigc if ((env.sc_iev_dns = calloc(1, sizeof(*env.sc_iev_dns))) == NULL) 419290931Srodrigc fatal(NULL); 420290931Srodrigc 421290931Srodrigc env.sc_iev->events = EV_READ; 422290931Srodrigc env.sc_iev->data = &env; 423290931Srodrigc imsg_init(&env.sc_iev->ibuf, pipe_main2client[1]); 424290931Srodrigc env.sc_iev->handler = client_dispatch_parent; 425290931Srodrigc event_set(&env.sc_iev->ev, env.sc_iev->ibuf.fd, env.sc_iev->events, 426290931Srodrigc env.sc_iev->handler, &env); 427290931Srodrigc event_add(&env.sc_iev->ev, NULL); 428290931Srodrigc 429290931Srodrigc env.sc_iev_dns->events = EV_READ; 430290931Srodrigc env.sc_iev_dns->data = &env; 431290931Srodrigc imsg_init(&env.sc_iev_dns->ibuf, pipe_dns[0]); 432290931Srodrigc env.sc_iev_dns->handler = client_dispatch_dns; 433290931Srodrigc event_set(&env.sc_iev_dns->ev, env.sc_iev_dns->ibuf.fd, 434290931Srodrigc env.sc_iev_dns->events, env.sc_iev_dns->handler, &env); 435290931Srodrigc event_add(&env.sc_iev_dns->ev, NULL); 436290931Srodrigc 437290931Srodrigc event_dispatch(); 438290931Srodrigc client_shutdown(); 439290931Srodrigc 440290931Srodrigc return (0); 441290931Srodrigc 442290931Srodrigc} 443290931Srodrigc 444290931Srodrigcint 445290931Srodrigcclient_build_req(struct idm *idm, struct idm_req *ir, struct aldap_message *m, 446290931Srodrigc int min_attr, int max_attr) 447290931Srodrigc{ 448290931Srodrigc char **ldap_attrs; 449290931Srodrigc int i, k; 450290931Srodrigc 451290931Srodrigc bzero(ir, sizeof(*ir)); 452290931Srodrigc for (i = min_attr; i < max_attr; i++) { 453290931Srodrigc if (idm->idm_flags & F_FIXED_ATTR(i)) { 454290931Srodrigc if (strlcat(ir->ir_line, idm->idm_attrs[i], 455290931Srodrigc sizeof(ir->ir_line)) >= sizeof(ir->ir_line)) 456290931Srodrigc /* 457290931Srodrigc * entry yields a line > 1024, trash it. 458290931Srodrigc */ 459290931Srodrigc return (-1); 460290931Srodrigc 461290931Srodrigc if (i == ATTR_UID) { 462290931Srodrigc ir->ir_key.ik_uid = strtonum( 463290931Srodrigc idm->idm_attrs[i], 0, 464290931Srodrigc UID_MAX, NULL); 465290931Srodrigc } else if (i == ATTR_GR_GID) { 466290931Srodrigc ir->ir_key.ik_gid = strtonum( 467290931Srodrigc idm->idm_attrs[i], 0, 468290931Srodrigc GID_MAX, NULL); 469290931Srodrigc } 470290931Srodrigc } else if (idm->idm_list & F_LIST(i)) { 471290931Srodrigc aldap_match_attr(m, idm->idm_attrs[i], &ldap_attrs); 472290931Srodrigc for (k = 0; k >= 0 && ldap_attrs && ldap_attrs[k] != NULL; k++) { 473290931Srodrigc /* XXX: Fail when attributes have illegal characters e.g. ',' */ 474290931Srodrigc if (strlcat(ir->ir_line, ldap_attrs[k], 475290931Srodrigc sizeof(ir->ir_line)) >= sizeof(ir->ir_line)) 476290931Srodrigc continue; 477290931Srodrigc if (ldap_attrs[k+1] != NULL) 478290931Srodrigc if (strlcat(ir->ir_line, ",", 479290931Srodrigc sizeof(ir->ir_line)) 480290931Srodrigc >= sizeof(ir->ir_line)) { 481290931Srodrigc aldap_free_attr(ldap_attrs); 482290931Srodrigc return (-1); 483290931Srodrigc } 484290931Srodrigc } 485290931Srodrigc aldap_free_attr(ldap_attrs); 486290931Srodrigc } else { 487290931Srodrigc if (aldap_match_attr(m, idm->idm_attrs[i], &ldap_attrs) == -1) 488290931Srodrigc return (-1); 489290931Srodrigc if (ldap_attrs[0] == NULL) 490290931Srodrigc return (-1); 491290931Srodrigc if (strlcat(ir->ir_line, ldap_attrs[0], 492290931Srodrigc sizeof(ir->ir_line)) >= sizeof(ir->ir_line)) { 493290931Srodrigc aldap_free_attr(ldap_attrs); 494290931Srodrigc return (-1); 495290931Srodrigc } 496290931Srodrigc if (i == ATTR_UID) { 497290931Srodrigc ir->ir_key.ik_uid = strtonum( 498290931Srodrigc ldap_attrs[0], 0, UID_MAX, NULL); 499290931Srodrigc } else if (i == ATTR_GR_GID) { 500290931Srodrigc ir->ir_key.ik_uid = strtonum( 501290931Srodrigc ldap_attrs[0], 0, GID_MAX, NULL); 502290931Srodrigc } 503290931Srodrigc aldap_free_attr(ldap_attrs); 504290931Srodrigc } 505290931Srodrigc 506290931Srodrigc if (i + 1 != max_attr) 507290931Srodrigc if (strlcat(ir->ir_line, ":", 508290931Srodrigc sizeof(ir->ir_line)) >= sizeof(ir->ir_line)) 509290931Srodrigc return (-1); 510290931Srodrigc } 511290931Srodrigc 512290931Srodrigc return (0); 513290931Srodrigc} 514290931Srodrigc 515290931Srodrigcint 516290931Srodrigcclient_search_idm(struct env *env, struct idm *idm, struct aldap *al, 517290931Srodrigc char **attrs, char *filter, int min_attr, int max_attr, 518290931Srodrigc enum imsg_type type) 519290931Srodrigc{ 520290931Srodrigc struct idm_req ir; 521290931Srodrigc struct aldap_message *m; 522290931Srodrigc struct aldap_page_control *pg = NULL; 523290931Srodrigc const char *errstr; 524290931Srodrigc char *dn; 525290931Srodrigc 526290931Srodrigc dn = idm->idm_basedn; 527290931Srodrigc if (type == IMSG_GRP_ENTRY && idm->idm_groupdn[0] != '\0') 528290931Srodrigc dn = idm->idm_groupdn; 529290931Srodrigc 530290931Srodrigc do { 531290931Srodrigc if (aldap_search(al, dn, LDAP_SCOPE_SUBTREE, 532290931Srodrigc filter, attrs, 0, 0, 0, pg) == -1) { 533290931Srodrigc aldap_get_errno(al, &errstr); 534290931Srodrigc log_debug("%s", errstr); 535290931Srodrigc return (-1); 536290931Srodrigc } 537290931Srodrigc 538290931Srodrigc if (pg != NULL) { 539290931Srodrigc aldap_freepage(pg); 540290931Srodrigc pg = NULL; 541290931Srodrigc } 542290931Srodrigc 543290931Srodrigc while ((m = aldap_parse(al)) != NULL) { 544290931Srodrigc if (al->msgid != m->msgid) { 545290931Srodrigc goto fail; 546290931Srodrigc } 547290931Srodrigc 548290931Srodrigc if (m->message_type == LDAP_RES_SEARCH_RESULT) { 549290931Srodrigc if (m->page != NULL && m->page->cookie_len != 0) 550290931Srodrigc pg = m->page; 551290931Srodrigc else 552290931Srodrigc pg = NULL; 553290931Srodrigc 554290931Srodrigc aldap_freemsg(m); 555290931Srodrigc break; 556290931Srodrigc } 557290931Srodrigc 558290931Srodrigc if (m->message_type != LDAP_RES_SEARCH_ENTRY) { 559290931Srodrigc goto fail; 560290931Srodrigc } 561290931Srodrigc 562290931Srodrigc if (client_build_req(idm, &ir, m, min_attr, max_attr) == 0) 563290931Srodrigc imsg_compose_event(env->sc_iev, type, 0, 0, -1, 564290931Srodrigc &ir, sizeof(ir)); 565290931Srodrigc 566290931Srodrigc aldap_freemsg(m); 567290931Srodrigc } 568290931Srodrigc } while (pg != NULL); 569290931Srodrigc 570290931Srodrigc return (0); 571290931Srodrigc 572290931Srodrigcfail: 573290931Srodrigc aldap_freemsg(m); 574290931Srodrigc if (pg != NULL) { 575290931Srodrigc aldap_freepage(pg); 576290931Srodrigc } 577290931Srodrigc 578290931Srodrigc return (-1); 579290931Srodrigc} 580290931Srodrigc 581290931Srodrigcint 582290931Srodrigcclient_try_idm(struct env *env, struct idm *idm) 583290931Srodrigc{ 584290931Srodrigc const char *where; 585290931Srodrigc char *attrs[ATTR_MAX+1]; 586290931Srodrigc int i, j; 587290931Srodrigc struct aldap_message *m; 588290931Srodrigc struct aldap *al; 589290931Srodrigc 590290931Srodrigc where = "connect"; 591290931Srodrigc if ((al = client_aldap_open(idm->idm_addr)) == NULL) 592290931Srodrigc return (-1); 593290931Srodrigc 594290931Srodrigc if (idm->idm_flags & F_NEEDAUTH) { 595290931Srodrigc where = "binding"; 596290931Srodrigc if (aldap_bind(al, idm->idm_binddn, idm->idm_bindcred) == -1) 597290931Srodrigc goto bad; 598290931Srodrigc 599290931Srodrigc where = "parsing"; 600290931Srodrigc if ((m = aldap_parse(al)) == NULL) 601290931Srodrigc goto bad; 602290931Srodrigc where = "verifying msgid"; 603290931Srodrigc if (al->msgid != m->msgid) { 604290931Srodrigc aldap_freemsg(m); 605290931Srodrigc goto bad; 606290931Srodrigc } 607290931Srodrigc aldap_freemsg(m); 608290931Srodrigc } 609290931Srodrigc 610290931Srodrigc bzero(attrs, sizeof(attrs)); 611290931Srodrigc for (i = 0, j = 0; i < ATTR_MAX; i++) { 612290931Srodrigc if (idm->idm_flags & F_FIXED_ATTR(i)) 613290931Srodrigc continue; 614290931Srodrigc attrs[j++] = idm->idm_attrs[i]; 615290931Srodrigc } 616290931Srodrigc attrs[j] = NULL; 617290931Srodrigc 618290931Srodrigc /* 619290931Srodrigc * build password line. 620290931Srodrigc */ 621290931Srodrigc where = "search"; 622290931Srodrigc log_debug("searching password entries"); 623290931Srodrigc if (client_search_idm(env, idm, al, attrs, 624290931Srodrigc idm->idm_filters[FILTER_USER], 0, ATTR_MAX, IMSG_PW_ENTRY) == -1) 625290931Srodrigc goto bad; 626290931Srodrigc 627290931Srodrigc bzero(attrs, sizeof(attrs)); 628290931Srodrigc for (i = ATTR_GR_MIN, j = 0; i < ATTR_GR_MAX; i++) { 629290931Srodrigc if (idm->idm_flags & F_FIXED_ATTR(i)) 630290931Srodrigc continue; 631290931Srodrigc attrs[j++] = idm->idm_attrs[i]; 632290931Srodrigc } 633290931Srodrigc attrs[j] = NULL; 634290931Srodrigc 635290931Srodrigc /* 636290931Srodrigc * build group line. 637290931Srodrigc */ 638290931Srodrigc where = "search"; 639290931Srodrigc log_debug("searching group entries"); 640290931Srodrigc if (client_search_idm(env, idm, al, attrs, 641290931Srodrigc idm->idm_filters[FILTER_GROUP], ATTR_GR_MIN, ATTR_GR_MAX, 642290931Srodrigc IMSG_GRP_ENTRY) == -1) 643290931Srodrigc goto bad; 644290931Srodrigc 645290931Srodrigc aldap_close(al); 646290931Srodrigc 647290931Srodrigc idm->idm_state = STATE_LDAP_DONE; 648290931Srodrigc 649290931Srodrigc return (0); 650290931Srodrigcbad: 651290931Srodrigc aldap_close(al); 652290931Srodrigc log_debug("directory %s errored out in %s", idm->idm_name, where); 653290931Srodrigc return (-1); 654290931Srodrigc} 655290931Srodrigc 656290931Srodrigcvoid 657290931Srodrigcclient_periodic_update(int fd, short event, void *p) 658290931Srodrigc{ 659290931Srodrigc struct env *env = p; 660290931Srodrigc 661290931Srodrigc struct idm *idm; 662290931Srodrigc int fail_cnt = 0; 663290931Srodrigc 664290931Srodrigc /* If LDAP isn't finished, notify the master process to trash the 665290931Srodrigc * update. */ 666290931Srodrigc TAILQ_FOREACH(idm, &env->sc_idms, idm_entry) { 667290931Srodrigc if (idm->idm_state < STATE_LDAP_DONE) 668290931Srodrigc fail_cnt++; 669290931Srodrigc 670290931Srodrigc idm->idm_state = STATE_NONE; 671290931Srodrigc 672290931Srodrigc client_addr_free(idm); 673290931Srodrigc } 674290931Srodrigc if (fail_cnt > 0) { 675290931Srodrigc log_debug("trash the update"); 676290931Srodrigc imsg_compose_event(env->sc_iev, IMSG_TRASH_UPDATE, 0, 0, -1, 677290931Srodrigc NULL, 0); 678290931Srodrigc } 679290931Srodrigc 680290931Srodrigc client_configure(env); 681290931Srodrigc} 682290931Srodrigc 683290931Srodrigcvoid 684290931Srodrigcclient_configure(struct env *env) 685290931Srodrigc{ 686290931Srodrigc struct timeval tv; 687290931Srodrigc struct idm *idm; 688290931Srodrigc u_int16_t dlen; 689290931Srodrigc 690290931Srodrigc log_debug("connecting to directories"); 691290931Srodrigc 692290931Srodrigc imsg_compose_event(env->sc_iev, IMSG_START_UPDATE, 0, 0, -1, NULL, 0); 693290931Srodrigc 694290931Srodrigc /* Start the DNS lookups */ 695290931Srodrigc TAILQ_FOREACH(idm, &env->sc_idms, idm_entry) { 696290931Srodrigc dlen = strlen(idm->idm_name) + 1; 697290931Srodrigc imsg_compose_event(env->sc_iev_dns, IMSG_HOST_DNS, idm->idm_id, 698290931Srodrigc 0, -1, idm->idm_name, dlen); 699290931Srodrigc } 700290931Srodrigc 701290931Srodrigc tv.tv_sec = env->sc_conf_tv.tv_sec; 702290931Srodrigc tv.tv_usec = env->sc_conf_tv.tv_usec; 703290931Srodrigc evtimer_set(&env->sc_conf_ev, client_periodic_update, env); 704290931Srodrigc evtimer_add(&env->sc_conf_ev, &tv); 705290931Srodrigc} 706