| File: | src/usr.sbin/ypldap/ypldap.c |
| Warning: | line 189, column 8 Although the value stored to 'cp' is used in the enclosing expression, the value is never actually read from 'cp' |
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| 1 | /* $OpenBSD: ypldap.c,v 1.22 2021/01/27 07:21:55 deraadt Exp $ */ |
| 2 | |
| 3 | /* |
| 4 | * Copyright (c) 2008 Pierre-Yves Ritschard <pyr@openbsd.org> |
| 5 | * |
| 6 | * Permission to use, copy, modify, and distribute this software for any |
| 7 | * purpose with or without fee is hereby granted, provided that the above |
| 8 | * copyright notice and this permission notice appear in all copies. |
| 9 | * |
| 10 | * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES |
| 11 | * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF |
| 12 | * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR |
| 13 | * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES |
| 14 | * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN |
| 15 | * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF |
| 16 | * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
| 17 | */ |
| 18 | |
| 19 | #include <sys/types.h> |
| 20 | #include <sys/queue.h> |
| 21 | #include <sys/socket.h> |
| 22 | #include <sys/signal.h> |
| 23 | #include <sys/tree.h> |
| 24 | #include <sys/wait.h> |
| 25 | |
| 26 | #include <netinet/in.h> |
| 27 | #include <arpa/inet.h> |
| 28 | |
| 29 | #include <err.h> |
| 30 | #include <errno(*__errno()).h> |
| 31 | #include <event.h> |
| 32 | #include <unistd.h> |
| 33 | #include <pwd.h> |
| 34 | #include <stdio.h> |
| 35 | #include <stdlib.h> |
| 36 | #include <string.h> |
| 37 | #include <limits.h> |
| 38 | |
| 39 | #include "ypldap.h" |
| 40 | #include "log.h" |
| 41 | |
| 42 | __dead__attribute__((__noreturn__)) void usage(void); |
| 43 | int check_child(pid_t, const char *); |
| 44 | void main_sig_handler(int, short, void *); |
| 45 | void main_shutdown(void); |
| 46 | void main_dispatch_client(int, short, void *); |
| 47 | void main_configure_client(struct env *); |
| 48 | void main_init_timer(int, short, void *); |
| 49 | void main_start_update(struct env *); |
| 50 | void main_trash_update(struct env *); |
| 51 | void main_end_update(struct env *); |
| 52 | int main_create_user_groups(struct env *); |
| 53 | void purge_config(struct env *); |
| 54 | void reconfigure(struct env *); |
| 55 | |
| 56 | int pipe_main2client[2]; |
| 57 | |
| 58 | pid_t client_pid = 0; |
| 59 | char *conffile = YPLDAP_CONF_FILE"/etc/ypldap.conf"; |
| 60 | int opts = 0; |
| 61 | |
| 62 | enum privsep_procid ypldap_process; |
| 63 | |
| 64 | void |
| 65 | usage(void) |
| 66 | { |
| 67 | extern const char *__progname; |
| 68 | |
| 69 | fprintf(stderr(&__sF[2]), "usage: %s [-dnv] [-D macro=value] [-f file]\n", |
| 70 | __progname); |
| 71 | exit(1); |
| 72 | } |
| 73 | |
| 74 | int |
| 75 | check_child(pid_t pid, const char *pname) |
| 76 | { |
| 77 | int status; |
| 78 | |
| 79 | if (waitpid(pid, &status, WNOHANG1) > 0) { |
| 80 | if (WIFEXITED(status)(((status) & 0177) == 0)) { |
| 81 | log_warnx("check_child: lost child %s exited", pname); |
| 82 | return (1); |
| 83 | } |
| 84 | if (WIFSIGNALED(status)(((status) & 0177) != 0177 && ((status) & 0177 ) != 0)) { |
| 85 | log_warnx("check_child: lost child %s terminated; " |
| 86 | "signal %d", pname, WTERMSIG(status)(((status) & 0177))); |
| 87 | return (1); |
| 88 | } |
| 89 | } |
| 90 | return (0); |
| 91 | } |
| 92 | |
| 93 | /* ARGUSED */ |
| 94 | void |
| 95 | main_sig_handler(int sig, short event, void *p) |
| 96 | { |
| 97 | int die = 0; |
| 98 | |
| 99 | switch (sig) { |
| 100 | case SIGTERM15: |
| 101 | case SIGINT2: |
| 102 | die = 1; |
| 103 | /* FALLTHROUGH */ |
| 104 | case SIGCHLD20: |
| 105 | if (check_child(client_pid, "ldap client")) { |
| 106 | client_pid = 0; |
| 107 | die = 1; |
| 108 | } |
| 109 | if (die) |
| 110 | main_shutdown(); |
| 111 | break; |
| 112 | case SIGHUP1: |
| 113 | /* reconfigure */ |
| 114 | break; |
| 115 | default: |
| 116 | fatalx("unexpected signal"); |
| 117 | } |
| 118 | } |
| 119 | |
| 120 | void |
| 121 | main_shutdown(void) |
| 122 | { |
| 123 | _exit(0); |
| 124 | } |
| 125 | |
| 126 | void |
| 127 | main_start_update(struct env *env) |
| 128 | { |
| 129 | env->update_trashed = 0; |
| 130 | |
| 131 | log_debug("starting directory update"); |
| 132 | env->sc_user_line_len = 0; |
| 133 | env->sc_group_line_len = 0; |
| 134 | if ((env->sc_user_names_t = calloc(1, |
| 135 | sizeof(*env->sc_user_names_t))) == NULL((void*)0) || |
| 136 | (env->sc_group_names_t = calloc(1, |
| 137 | sizeof(*env->sc_group_names_t))) == NULL((void*)0)) |
| 138 | fatal(NULL((void*)0)); |
| 139 | RB_INIT(env->sc_user_names_t)do { (env->sc_user_names_t)->rbh_root = ((void*)0); } while (0); |
| 140 | RB_INIT(env->sc_group_names_t)do { (env->sc_group_names_t)->rbh_root = ((void*)0); } while (0); |
| 141 | } |
| 142 | |
| 143 | /* |
| 144 | * XXX: Currently this function should only be called when updating is |
| 145 | * finished. A notification should be send to ldapclient that it should stop |
| 146 | * sending new pwd/grp entries before it can be called from different places. |
| 147 | */ |
| 148 | void |
| 149 | main_trash_update(struct env *env) |
| 150 | { |
| 151 | struct userent *ue; |
| 152 | struct groupent *ge; |
| 153 | |
| 154 | env->update_trashed = 1; |
| 155 | |
| 156 | while ((ue = RB_ROOT(env->sc_user_names_t)(env->sc_user_names_t)->rbh_root) != NULL((void*)0)) { |
| 157 | RB_REMOVE(user_name_tree,user_name_tree_RB_REMOVE(env->sc_user_names_t, ue) |
| 158 | env->sc_user_names_t, ue)user_name_tree_RB_REMOVE(env->sc_user_names_t, ue); |
| 159 | free(ue->ue_line); |
| 160 | free(ue->ue_netid_line); |
| 161 | free(ue); |
| 162 | } |
| 163 | free(env->sc_user_names_t); |
| 164 | env->sc_user_names_t = NULL((void*)0); |
| 165 | while ((ge = RB_ROOT(env->sc_group_names_t)(env->sc_group_names_t)->rbh_root) |
| 166 | != NULL((void*)0)) { |
| 167 | RB_REMOVE(group_name_tree,group_name_tree_RB_REMOVE(env->sc_group_names_t, ge) |
| 168 | env->sc_group_names_t, ge)group_name_tree_RB_REMOVE(env->sc_group_names_t, ge); |
| 169 | free(ge->ge_line); |
| 170 | free(ge); |
| 171 | } |
| 172 | free(env->sc_group_names_t); |
| 173 | env->sc_group_names_t = NULL((void*)0); |
| 174 | } |
| 175 | |
| 176 | int |
| 177 | main_create_user_groups(struct env *env) |
| 178 | { |
| 179 | struct userent *ue; |
| 180 | struct userent ukey; |
| 181 | struct groupent *ge; |
| 182 | gid_t pw_gid; |
| 183 | char *bp, *cp; |
| 184 | char *p; |
| 185 | const char *errstr = NULL((void*)0); |
| 186 | size_t len; |
| 187 | |
| 188 | RB_FOREACH(ue, user_name_tree, env->sc_user_names_t)for ((ue) = user_name_tree_RB_MINMAX(env->sc_user_names_t, -1); (ue) != ((void*)0); (ue) = user_name_tree_RB_NEXT(ue)) { |
| 189 | bp = cp = ue->ue_line; |
Although the value stored to 'cp' is used in the enclosing expression, the value is never actually read from 'cp' | |
| 190 | |
| 191 | /* name */ |
| 192 | bp += strlen(bp) + 1; |
| 193 | |
| 194 | /* password */ |
| 195 | bp += strcspn(bp, ":") + 1; |
| 196 | |
| 197 | /* uid */ |
| 198 | bp += strcspn(bp, ":") + 1; |
| 199 | |
| 200 | /* gid */ |
| 201 | bp[strcspn(bp, ":")] = '\0'; |
| 202 | |
| 203 | pw_gid = (gid_t)strtonum(bp, 0, GID_MAX(2147483647 *2U +1U), &errstr); |
| 204 | if (errstr) { |
| 205 | log_warnx("main: failed to parse gid for uid: %d\n", ue->ue_uid); |
| 206 | return (-1); |
| 207 | } |
| 208 | |
| 209 | /* bring gid column back to its proper state */ |
| 210 | bp[strlen(bp)] = ':'; |
| 211 | |
| 212 | if ((ue->ue_netid_line = calloc(1, LINE_WIDTH1024)) == NULL((void*)0)) { |
| 213 | return (-1); |
| 214 | } |
| 215 | |
| 216 | if (snprintf(ue->ue_netid_line, LINE_WIDTH1024-1, "%d:%d", ue->ue_uid, pw_gid) >= LINE_WIDTH1024) { |
| 217 | |
| 218 | return (-1); |
| 219 | } |
| 220 | |
| 221 | ue->ue_gid = pw_gid; |
| 222 | } |
| 223 | |
| 224 | RB_FOREACH(ge, group_name_tree, env->sc_group_names_t)for ((ge) = group_name_tree_RB_MINMAX(env->sc_group_names_t , -1); (ge) != ((void*)0); (ge) = group_name_tree_RB_NEXT(ge) ) { |
| 225 | bp = cp = ge->ge_line; |
| 226 | |
| 227 | /* name */ |
| 228 | bp += strlen(bp) + 1; |
| 229 | |
| 230 | /* password */ |
| 231 | bp += strcspn(bp, ":") + 1; |
| 232 | |
| 233 | /* gid */ |
| 234 | bp += strcspn(bp, ":") + 1; |
| 235 | |
| 236 | cp = bp; |
| 237 | if (*bp == '\0') |
| 238 | continue; |
| 239 | bp = cp; |
| 240 | for (;;) { |
| 241 | if (!(cp = strsep(&bp, ","))) |
| 242 | break; |
| 243 | ukey.ue_line = cp; |
| 244 | if ((ue = RB_FIND(user_name_tree, env->sc_user_names_t,user_name_tree_RB_FIND(env->sc_user_names_t, &ukey) |
| 245 | &ukey)user_name_tree_RB_FIND(env->sc_user_names_t, &ukey)) == NULL((void*)0)) { |
| 246 | /* User not found */ |
| 247 | log_warnx("main: unknown user %s in group %s\n", |
| 248 | ukey.ue_line, ge->ge_line); |
| 249 | if (bp != NULL((void*)0)) |
| 250 | *(bp-1) = ','; |
| 251 | continue; |
| 252 | } |
| 253 | if (bp != NULL((void*)0)) |
| 254 | *(bp-1) = ','; |
| 255 | |
| 256 | /* Make sure the new group doesn't equal to the main gid */ |
| 257 | if (ge->ge_gid == ue->ue_gid) |
| 258 | continue; |
| 259 | |
| 260 | len = strlen(ue->ue_netid_line); |
| 261 | p = ue->ue_netid_line + len; |
| 262 | |
| 263 | if ((snprintf(p, LINE_WIDTH1024-len-1, ",%d", |
| 264 | ge->ge_gid)) >= (int)(LINE_WIDTH1024-len)) { |
| 265 | return (-1); |
| 266 | } |
| 267 | } |
| 268 | } |
| 269 | |
| 270 | return (0); |
| 271 | } |
| 272 | |
| 273 | void |
| 274 | main_end_update(struct env *env) |
| 275 | { |
| 276 | struct userent *ue; |
| 277 | struct groupent *ge; |
| 278 | |
| 279 | if (env->update_trashed) |
| 280 | return; |
| 281 | |
| 282 | log_debug("updates are over, cleaning up trees now"); |
| 283 | |
| 284 | if (main_create_user_groups(env) == -1) { |
| 285 | main_trash_update(env); |
| 286 | return; |
| 287 | } |
| 288 | |
| 289 | if (env->sc_user_names == NULL((void*)0)) { |
| 290 | env->sc_user_names = env->sc_user_names_t; |
| 291 | env->sc_user_lines = NULL((void*)0); |
| 292 | env->sc_user_names_t = NULL((void*)0); |
| 293 | |
| 294 | env->sc_group_names = env->sc_group_names_t; |
| 295 | env->sc_group_lines = NULL((void*)0); |
| 296 | env->sc_group_names_t = NULL((void*)0); |
| 297 | |
| 298 | flatten_entries(env); |
| 299 | goto make_uids; |
| 300 | } |
| 301 | |
| 302 | /* |
| 303 | * clean previous tree. |
| 304 | */ |
| 305 | while ((ue = RB_ROOT(env->sc_user_names)(env->sc_user_names)->rbh_root) != NULL((void*)0)) { |
| 306 | RB_REMOVE(user_name_tree, env->sc_user_names,user_name_tree_RB_REMOVE(env->sc_user_names, ue) |
| 307 | ue)user_name_tree_RB_REMOVE(env->sc_user_names, ue); |
| 308 | free(ue->ue_netid_line); |
| 309 | free(ue); |
| 310 | } |
| 311 | free(env->sc_user_names); |
| 312 | free(env->sc_user_lines); |
| 313 | |
| 314 | env->sc_user_names = env->sc_user_names_t; |
| 315 | env->sc_user_lines = NULL((void*)0); |
| 316 | env->sc_user_names_t = NULL((void*)0); |
| 317 | |
| 318 | while ((ge = RB_ROOT(env->sc_group_names)(env->sc_group_names)->rbh_root) != NULL((void*)0)) { |
| 319 | RB_REMOVE(group_name_tree,group_name_tree_RB_REMOVE(env->sc_group_names, ge) |
| 320 | env->sc_group_names, ge)group_name_tree_RB_REMOVE(env->sc_group_names, ge); |
| 321 | free(ge); |
| 322 | } |
| 323 | free(env->sc_group_names); |
| 324 | free(env->sc_group_lines); |
| 325 | |
| 326 | env->sc_group_names = env->sc_group_names_t; |
| 327 | env->sc_group_lines = NULL((void*)0); |
| 328 | env->sc_group_names_t = NULL((void*)0); |
| 329 | |
| 330 | |
| 331 | flatten_entries(env); |
| 332 | |
| 333 | /* |
| 334 | * trees are flat now. build up uid, gid and netid trees. |
| 335 | */ |
| 336 | |
| 337 | make_uids: |
| 338 | RB_INIT(&env->sc_user_uids)do { (&env->sc_user_uids)->rbh_root = ((void*)0); } while (0); |
| 339 | RB_INIT(&env->sc_group_gids)do { (&env->sc_group_gids)->rbh_root = ((void*)0); } while (0); |
| 340 | RB_FOREACH(ue, user_name_tree, env->sc_user_names)for ((ue) = user_name_tree_RB_MINMAX(env->sc_user_names, - 1); (ue) != ((void*)0); (ue) = user_name_tree_RB_NEXT(ue)) |
| 341 | RB_INSERT(user_uid_tree,user_uid_tree_RB_INSERT(&env->sc_user_uids, ue) |
| 342 | &env->sc_user_uids, ue)user_uid_tree_RB_INSERT(&env->sc_user_uids, ue); |
| 343 | RB_FOREACH(ge, group_name_tree, env->sc_group_names)for ((ge) = group_name_tree_RB_MINMAX(env->sc_group_names, -1); (ge) != ((void*)0); (ge) = group_name_tree_RB_NEXT(ge)) |
| 344 | RB_INSERT(group_gid_tree,group_gid_tree_RB_INSERT(&env->sc_group_gids, ge) |
| 345 | &env->sc_group_gids, ge)group_gid_tree_RB_INSERT(&env->sc_group_gids, ge); |
| 346 | |
| 347 | } |
| 348 | |
| 349 | void |
| 350 | main_dispatch_client(int fd, short events, void *p) |
| 351 | { |
| 352 | int n; |
| 353 | int shut = 0; |
| 354 | struct env *env = p; |
| 355 | struct imsgev *iev = env->sc_iev; |
| 356 | struct imsgbuf *ibuf = &iev->ibuf; |
| 357 | struct idm_req ir; |
| 358 | struct imsg imsg; |
| 359 | |
| 360 | if ((events & (EV_READ0x02 | EV_WRITE0x04)) == 0) |
| 361 | fatalx("unknown event"); |
| 362 | |
| 363 | if (events & EV_READ0x02) { |
| 364 | if ((n = imsg_read(ibuf)) == -1 && errno(*__errno()) != EAGAIN35) |
| 365 | fatal("imsg_read error"); |
| 366 | if (n == 0) |
| 367 | shut = 1; |
| 368 | } |
| 369 | if (events & EV_WRITE0x04) { |
| 370 | if ((n = msgbuf_write(&ibuf->w)) == -1 && errno(*__errno()) != EAGAIN35) |
| 371 | fatal("msgbuf_write"); |
| 372 | if (n == 0) |
| 373 | shut = 1; |
| 374 | goto done; |
| 375 | } |
| 376 | |
| 377 | for (;;) { |
| 378 | if ((n = imsg_get(ibuf, &imsg)) == -1) |
| 379 | fatal("main_dispatch_client: imsg_get error"); |
| 380 | if (n == 0) |
| 381 | break; |
| 382 | |
| 383 | switch (imsg.hdr.type) { |
| 384 | case IMSG_START_UPDATE: |
| 385 | main_start_update(env); |
| 386 | break; |
| 387 | case IMSG_PW_ENTRY: { |
| 388 | struct userent *ue; |
| 389 | size_t len; |
| 390 | |
| 391 | if (env->update_trashed) |
| 392 | break; |
| 393 | |
| 394 | (void)memcpy(&ir, imsg.data, sizeof(ir)); |
| 395 | if ((ue = calloc(1, sizeof(*ue))) == NULL((void*)0) || |
| 396 | (ue->ue_line = strdup(ir.ir_line)) == NULL((void*)0)) { |
| 397 | /* |
| 398 | * should cancel tree update instead. |
| 399 | */ |
| 400 | fatal("out of memory"); |
| 401 | } |
| 402 | ue->ue_uid = ir.ir_key.ik_uid; |
| 403 | len = strlen(ue->ue_line) + 1; |
| 404 | ue->ue_line[strcspn(ue->ue_line, ":")] = '\0'; |
| 405 | if (RB_INSERT(user_name_tree, env->sc_user_names_t,user_name_tree_RB_INSERT(env->sc_user_names_t, ue) |
| 406 | ue)user_name_tree_RB_INSERT(env->sc_user_names_t, ue) != NULL((void*)0)) { /* dup */ |
| 407 | free(ue->ue_line); |
| 408 | free(ue); |
| 409 | } else |
| 410 | env->sc_user_line_len += len; |
| 411 | break; |
| 412 | } |
| 413 | case IMSG_GRP_ENTRY: { |
| 414 | struct groupent *ge; |
| 415 | size_t len; |
| 416 | |
| 417 | if (env->update_trashed) |
| 418 | break; |
| 419 | |
| 420 | (void)memcpy(&ir, imsg.data, sizeof(ir)); |
| 421 | if ((ge = calloc(1, sizeof(*ge))) == NULL((void*)0) || |
| 422 | (ge->ge_line = strdup(ir.ir_line)) == NULL((void*)0)) { |
| 423 | /* |
| 424 | * should cancel tree update instead. |
| 425 | */ |
| 426 | fatal("out of memory"); |
| 427 | } |
| 428 | ge->ge_gid = ir.ir_key.ik_gid; |
| 429 | len = strlen(ge->ge_line) + 1; |
| 430 | ge->ge_line[strcspn(ge->ge_line, ":")] = '\0'; |
| 431 | if (RB_INSERT(group_name_tree, env->sc_group_names_t,group_name_tree_RB_INSERT(env->sc_group_names_t, ge) |
| 432 | ge)group_name_tree_RB_INSERT(env->sc_group_names_t, ge) != NULL((void*)0)) { /* dup */ |
| 433 | free(ge->ge_line); |
| 434 | free(ge); |
| 435 | } else |
| 436 | env->sc_group_line_len += len; |
| 437 | break; |
| 438 | } |
| 439 | case IMSG_TRASH_UPDATE: |
| 440 | main_trash_update(env); |
| 441 | break; |
| 442 | case IMSG_END_UPDATE: { |
| 443 | main_end_update(env); |
| 444 | break; |
| 445 | } |
| 446 | default: |
| 447 | log_debug("main_dispatch_client: unexpected imsg %d", |
| 448 | imsg.hdr.type); |
| 449 | break; |
| 450 | } |
| 451 | imsg_free(&imsg); |
| 452 | } |
| 453 | |
| 454 | done: |
| 455 | if (!shut) |
| 456 | imsg_event_add(iev); |
| 457 | else { |
| 458 | log_debug("king bula sez: ran into dead pipe"); |
| 459 | event_del(&iev->ev); |
| 460 | event_loopexit(NULL((void*)0)); |
| 461 | } |
| 462 | } |
| 463 | |
| 464 | void |
| 465 | main_configure_client(struct env *env) |
| 466 | { |
| 467 | struct idm *idm; |
| 468 | struct imsgev *iev = env->sc_iev; |
| 469 | |
| 470 | imsg_compose_event(iev, IMSG_CONF_START, 0, 0, -1, env, sizeof(*env)); |
| 471 | TAILQ_FOREACH(idm, &env->sc_idms, idm_entry)for((idm) = ((&env->sc_idms)->tqh_first); (idm) != ( (void*)0); (idm) = ((idm)->idm_entry.tqe_next)) { |
| 472 | imsg_compose_event(iev, IMSG_CONF_IDM, 0, 0, -1, |
| 473 | idm, sizeof(*idm)); |
| 474 | } |
| 475 | imsg_compose_event(iev, IMSG_CONF_END, 0, 0, -1, NULL((void*)0), 0); |
| 476 | } |
| 477 | |
| 478 | void |
| 479 | main_init_timer(int fd, short event, void *p) |
| 480 | { |
| 481 | struct env *env = p; |
| 482 | |
| 483 | main_configure_client(env); |
| 484 | } |
| 485 | |
| 486 | void |
| 487 | purge_config(struct env *env) |
| 488 | { |
| 489 | struct idm *idm; |
| 490 | |
| 491 | while ((idm = TAILQ_FIRST(&env->sc_idms)((&env->sc_idms)->tqh_first)) != NULL((void*)0)) { |
| 492 | TAILQ_REMOVE(&env->sc_idms, idm, idm_entry)do { if (((idm)->idm_entry.tqe_next) != ((void*)0)) (idm)-> idm_entry.tqe_next->idm_entry.tqe_prev = (idm)->idm_entry .tqe_prev; else (&env->sc_idms)->tqh_last = (idm)-> idm_entry.tqe_prev; *(idm)->idm_entry.tqe_prev = (idm)-> idm_entry.tqe_next; ; ; } while (0); |
| 493 | free(idm); |
| 494 | } |
| 495 | } |
| 496 | |
| 497 | int |
| 498 | main(int argc, char *argv[]) |
| 499 | { |
| 500 | int c; |
| 501 | int debug; |
| 502 | struct passwd *pw; |
| 503 | struct env env; |
| 504 | struct event ev_sigint; |
| 505 | struct event ev_sigterm; |
| 506 | struct event ev_sigchld; |
| 507 | struct event ev_sighup; |
| 508 | struct event ev_timer; |
| 509 | struct timeval tv; |
| 510 | |
| 511 | debug = 0; |
| 512 | ypldap_process = PROC_MAIN; |
| 513 | log_procname = log_procnames[ypldap_process]; |
| 514 | |
| 515 | log_init(1); |
| 516 | |
| 517 | while ((c = getopt(argc, argv, "dD:nf:v")) != -1) { |
| 518 | switch (c) { |
| 519 | case 'd': |
| 520 | debug = 2; |
| 521 | log_verbose(debug); |
| 522 | break; |
| 523 | case 'D': |
| 524 | if (cmdline_symset(optarg) < 0) |
| 525 | log_warnx("could not parse macro definition %s", |
| 526 | optarg); |
| 527 | break; |
| 528 | case 'n': |
| 529 | debug = 2; |
| 530 | opts |= YPLDAP_OPT_NOACTION0x02; |
| 531 | break; |
| 532 | case 'f': |
| 533 | conffile = optarg; |
| 534 | break; |
| 535 | case 'v': |
| 536 | opts |= YPLDAP_OPT_VERBOSE0x01; |
| 537 | break; |
| 538 | default: |
| 539 | usage(); |
| 540 | } |
| 541 | } |
| 542 | |
| 543 | argc -= optind; |
| 544 | argv += optind; |
| 545 | |
| 546 | if (argc) |
| 547 | usage(); |
| 548 | |
| 549 | RB_INIT(&env.sc_user_uids)do { (&env.sc_user_uids)->rbh_root = ((void*)0); } while (0); |
| 550 | RB_INIT(&env.sc_group_gids)do { (&env.sc_group_gids)->rbh_root = ((void*)0); } while (0); |
| 551 | |
| 552 | if (parse_config(&env, conffile, opts)) |
| 553 | exit(1); |
| 554 | if (opts & YPLDAP_OPT_NOACTION0x02) { |
| 555 | fprintf(stderr(&__sF[2]), "configuration OK\n"); |
| 556 | exit(0); |
| 557 | } |
| 558 | |
| 559 | if (geteuid()) |
| 560 | errx(1, "need root privileges"); |
| 561 | |
| 562 | log_init(debug); |
| 563 | |
| 564 | if (!debug) { |
| 565 | if (daemon(1, 0) == -1) |
| 566 | err(1, "failed to daemonize"); |
| 567 | } |
| 568 | |
| 569 | log_info("startup%s", (debug > 1)?" [debug mode]":""); |
| 570 | |
| 571 | if (socketpair(AF_UNIX1, SOCK_STREAM1 | SOCK_NONBLOCK0x4000, PF_UNSPEC0, |
| 572 | pipe_main2client) == -1) |
| 573 | fatal("socketpair"); |
| 574 | |
| 575 | client_pid = ldapclient(pipe_main2client); |
| 576 | |
| 577 | setproctitle("parent"); |
| 578 | event_init(); |
| 579 | |
| 580 | signal_set(&ev_sigint, SIGINT, main_sig_handler, &env)event_set(&ev_sigint, 2, 0x08|0x10, main_sig_handler, & env); |
| 581 | signal_set(&ev_sigterm, SIGTERM, main_sig_handler, &env)event_set(&ev_sigterm, 15, 0x08|0x10, main_sig_handler, & env); |
| 582 | signal_set(&ev_sighup, SIGHUP, main_sig_handler, &env)event_set(&ev_sighup, 1, 0x08|0x10, main_sig_handler, & env); |
| 583 | signal_set(&ev_sigchld, SIGCHLD, main_sig_handler, &env)event_set(&ev_sigchld, 20, 0x08|0x10, main_sig_handler, & env); |
| 584 | signal_add(&ev_sigint, NULL)event_add(&ev_sigint, ((void*)0)); |
| 585 | signal_add(&ev_sigterm, NULL)event_add(&ev_sigterm, ((void*)0)); |
| 586 | signal_add(&ev_sighup, NULL)event_add(&ev_sighup, ((void*)0)); |
| 587 | signal_add(&ev_sigchld, NULL)event_add(&ev_sigchld, ((void*)0)); |
| 588 | |
| 589 | close(pipe_main2client[1]); |
| 590 | if ((env.sc_iev = calloc(1, sizeof(*env.sc_iev))) == NULL((void*)0)) |
| 591 | fatal(NULL((void*)0)); |
| 592 | imsg_init(&env.sc_iev->ibuf, pipe_main2client[0]); |
| 593 | env.sc_iev->handler = main_dispatch_client; |
| 594 | |
| 595 | env.sc_iev->events = EV_READ0x02; |
| 596 | env.sc_iev->data = &env; |
| 597 | event_set(&env.sc_iev->ev, env.sc_iev->ibuf.fd, env.sc_iev->events, |
| 598 | env.sc_iev->handler, &env); |
| 599 | event_add(&env.sc_iev->ev, NULL((void*)0)); |
| 600 | |
| 601 | yp_init(&env); |
| 602 | |
| 603 | if ((pw = getpwnam(YPLDAP_USER"_ypldap")) == NULL((void*)0)) |
| 604 | fatal("getpwnam"); |
| 605 | |
| 606 | #ifndef DEBUG |
| 607 | if (setgroups(1, &pw->pw_gid) || |
| 608 | setresgid(pw->pw_gid, pw->pw_gid, pw->pw_gid) || |
| 609 | setresuid(pw->pw_uid, pw->pw_uid, pw->pw_uid)) |
| 610 | fatal("cannot drop privileges"); |
| 611 | #else |
| 612 | #warning disabling privilege revocation in debug mode |
| 613 | #endif |
| 614 | |
| 615 | if (pledge("stdio inet", NULL((void*)0)) == -1) |
| 616 | fatal("pledge"); |
| 617 | |
| 618 | memset(&tv, 0, sizeof(tv)); |
| 619 | evtimer_set(&ev_timer, main_init_timer, &env)event_set(&ev_timer, -1, 0, main_init_timer, &env); |
| 620 | evtimer_add(&ev_timer, &tv)event_add(&ev_timer, &tv); |
| 621 | |
| 622 | yp_enable_events(); |
| 623 | event_dispatch(); |
| 624 | main_shutdown(); |
| 625 | |
| 626 | return (0); |
| 627 | } |
| 628 | |
| 629 | void |
| 630 | imsg_event_add(struct imsgev *iev) |
| 631 | { |
| 632 | if (iev->handler == NULL((void*)0)) { |
| 633 | imsg_flush(&iev->ibuf); |
| 634 | return; |
| 635 | } |
| 636 | |
| 637 | iev->events = EV_READ0x02; |
| 638 | if (iev->ibuf.w.queued) |
| 639 | iev->events |= EV_WRITE0x04; |
| 640 | |
| 641 | event_del(&iev->ev); |
| 642 | event_set(&iev->ev, iev->ibuf.fd, iev->events, iev->handler, iev->data); |
| 643 | event_add(&iev->ev, NULL((void*)0)); |
| 644 | } |
| 645 | |
| 646 | int |
| 647 | imsg_compose_event(struct imsgev *iev, u_int16_t type, u_int32_t peerid, |
| 648 | pid_t pid, int fd, void *data, u_int16_t datalen) |
| 649 | { |
| 650 | int ret; |
| 651 | |
| 652 | if ((ret = imsg_compose(&iev->ibuf, type, peerid, |
| 653 | pid, fd, data, datalen)) != -1) |
| 654 | imsg_event_add(iev); |
| 655 | return (ret); |
| 656 | } |