1 /* $NetBSD: rpcbind.c,v 1.3 2002/11/08 00:16:40 fvdl Exp $ */ 2 /* $FreeBSD$ */ 3 4 /* 5 * Sun RPC is a product of Sun Microsystems, Inc. and is provided for 6 * unrestricted use provided that this legend is included on all tape 7 * media and as a part of the software program in whole or part. Users 8 * may copy or modify Sun RPC without charge, but are not authorized 9 * to license or distribute it to anyone else except as part of a product or 10 * program developed by the user. 11 * 12 * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE 13 * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR 14 * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE. 15 * 16 * Sun RPC is provided with no support and without any obligation on the 17 * part of Sun Microsystems, Inc. to assist in its use, correction, 18 * modification or enhancement. 19 * 20 * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE 21 * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC 22 * OR ANY PART THEREOF. 23 * 24 * In no event will Sun Microsystems, Inc. be liable for any lost revenue 25 * or profits or other special, indirect and consequential damages, even if 26 * Sun has been advised of the possibility of such damages. 27 * 28 * Sun Microsystems, Inc. 29 * 2550 Garcia Avenue 30 * Mountain View, California 94043 31 */ 32 /* 33 * Copyright (c) 1984 - 1991 by Sun Microsystems, Inc. 34 */ 35 36 /* #ident "@(#)rpcbind.c 1.19 94/04/25 SMI" */ 37 38 #if 0 39 #ifndef lint 40 static char sccsid[] = "@(#)rpcbind.c 1.35 89/04/21 Copyr 1984 Sun Micro"; 41 #endif 42 #endif 43 44 /* 45 * rpcbind.c 46 * Implements the program, version to address mapping for rpc. 47 * 48 */ 49 50 #include <sys/types.h> 51 #include <sys/stat.h> 52 #include <sys/errno.h> 53 #include <sys/time.h> 54 #include <sys/resource.h> 55 #include <sys/wait.h> 56 #include <sys/signal.h> 57 #include <sys/socket.h> 58 #include <sys/un.h> 59 #include <rpc/rpc.h> 60 #include <rpc/rpc_com.h> 61 #ifdef PORTMAP 62 #include <netinet/in.h> 63 #endif 64 #include <arpa/inet.h> 65 #include <fcntl.h> 66 #include <netdb.h> 67 #include <stdio.h> 68 #include <netconfig.h> 69 #include <stdlib.h> 70 #include <unistd.h> 71 #include <syslog.h> 72 #include <err.h> 73 #include <libutil.h> 74 #include <pwd.h> 75 #include <string.h> 76 #include <errno.h> 77 #include "rpcbind.h" 78 79 /* Global variables */ 80 int debugging = 0; /* Tell me what's going on */ 81 int doabort = 0; /* When debugging, do an abort on errors */ 82 rpcblist_ptr list_rbl; /* A list of version 3/4 rpcbind services */ 83 84 /* who to suid to if -s is given */ 85 #define RUN_AS "daemon" 86 87 #define RPCBINDDLOCK "/var/run/rpcbind.lock" 88 89 int runasdaemon = 0; 90 int insecure = 0; 91 int oldstyle_local = 0; 92 int verboselog = 0; 93 94 char **hosts = NULL; 95 int ipv6_only = 0; 96 int nhosts = 0; 97 int on = 1; 98 int rpcbindlockfd; 99 100 #ifdef WARMSTART 101 /* Local Variable */ 102 static int warmstart = 0; /* Grab an old copy of registrations. */ 103 #endif 104 105 #ifdef PORTMAP 106 struct pmaplist *list_pml; /* A list of version 2 rpcbind services */ 107 char *udptrans; /* Name of UDP transport */ 108 char *tcptrans; /* Name of TCP transport */ 109 char *udp_uaddr; /* Universal UDP address */ 110 char *tcp_uaddr; /* Universal TCP address */ 111 #endif 112 static char servname[] = "rpcbind"; 113 static char superuser[] = "superuser"; 114 115 int main(int, char *[]); 116 117 static int init_transport(struct netconfig *); 118 static void rbllist_add(rpcprog_t, rpcvers_t, struct netconfig *, 119 struct netbuf *); 120 static void terminate(int); 121 static void parseargs(int, char *[]); 122 123 int 124 main(int argc, char *argv[]) 125 { 126 struct netconfig *nconf; 127 void *nc_handle; /* Net config handle */ 128 struct rlimit rl; 129 int maxrec = RPC_MAXDATASIZE; 130 131 parseargs(argc, argv); 132 133 /* Check that another rpcbind isn't already running. */ 134 if ((rpcbindlockfd = (open(RPCBINDDLOCK, 135 O_RDONLY|O_CREAT, 0444))) == -1) 136 err(1, "%s", RPCBINDDLOCK); 137 138 if(flock(rpcbindlockfd, LOCK_EX|LOCK_NB) == -1 && errno == EWOULDBLOCK) 139 errx(1, "another rpcbind is already running. Aborting"); 140 141 getrlimit(RLIMIT_NOFILE, &rl); 142 if (rl.rlim_cur < 128) { 143 if (rl.rlim_max <= 128) 144 rl.rlim_cur = rl.rlim_max; 145 else 146 rl.rlim_cur = 128; 147 setrlimit(RLIMIT_NOFILE, &rl); 148 } 149 openlog("rpcbind", LOG_CONS, LOG_DAEMON); 150 if (geteuid()) { /* This command allowed only to root */ 151 fprintf(stderr, "Sorry. You are not superuser\n"); 152 exit(1); 153 } 154 nc_handle = setnetconfig(); /* open netconfig file */ 155 if (nc_handle == NULL) { 156 syslog(LOG_ERR, "could not read /etc/netconfig"); 157 exit(1); 158 } 159 #ifdef PORTMAP 160 udptrans = ""; 161 tcptrans = ""; 162 #endif 163 164 nconf = getnetconfigent("local"); 165 if (nconf == NULL) 166 nconf = getnetconfigent("unix"); 167 if (nconf == NULL) { 168 syslog(LOG_ERR, "%s: can't find local transport\n", argv[0]); 169 exit(1); 170 } 171 172 rpc_control(RPC_SVC_CONNMAXREC_SET, &maxrec); 173 174 init_transport(nconf); 175 176 while ((nconf = getnetconfig(nc_handle))) { 177 if (nconf->nc_flag & NC_VISIBLE) 178 if (ipv6_only == 1 && strcmp(nconf->nc_protofmly, 179 "inet") == 0) { 180 /* DO NOTHING */ 181 } else 182 init_transport(nconf); 183 } 184 endnetconfig(nc_handle); 185 186 /* catch the usual termination signals for graceful exit */ 187 (void) signal(SIGCHLD, reap); 188 (void) signal(SIGINT, terminate); 189 (void) signal(SIGTERM, terminate); 190 (void) signal(SIGQUIT, terminate); 191 /* ignore others that could get sent */ 192 (void) signal(SIGPIPE, SIG_IGN); 193 (void) signal(SIGHUP, SIG_IGN); 194 (void) signal(SIGUSR1, SIG_IGN); 195 (void) signal(SIGUSR2, SIG_IGN); 196 #ifdef WARMSTART 197 if (warmstart) { 198 read_warmstart(); 199 } 200 #endif 201 if (debugging) { 202 printf("rpcbind debugging enabled."); 203 if (doabort) { 204 printf(" Will abort on errors!\n"); 205 } else { 206 printf("\n"); 207 } 208 } else { 209 if (daemon(0, 0)) 210 err(1, "fork failed"); 211 } 212 213 if (runasdaemon) { 214 struct passwd *p; 215 216 if((p = getpwnam(RUN_AS)) == NULL) { 217 syslog(LOG_ERR, "cannot get uid of daemon: %m"); 218 exit(1); 219 } 220 if (setuid(p->pw_uid) == -1) { 221 syslog(LOG_ERR, "setuid to daemon failed: %m"); 222 exit(1); 223 } 224 } 225 226 network_init(); 227 228 my_svc_run(); 229 syslog(LOG_ERR, "svc_run returned unexpectedly"); 230 rpcbind_abort(); 231 /* NOTREACHED */ 232 233 return 0; 234 } 235 236 /* 237 * Adds the entry into the rpcbind database. 238 * If PORTMAP, then for UDP and TCP, it adds the entries for version 2 also 239 * Returns 0 if succeeds, else fails 240 */ 241 static int 242 init_transport(struct netconfig *nconf) 243 { 244 int fd; 245 struct t_bind taddr; 246 struct addrinfo hints, *res = NULL; 247 struct __rpc_sockinfo si; 248 SVCXPRT *my_xprt; 249 int status; /* bound checking ? */ 250 int aicode; 251 int addrlen; 252 int nhostsbak; 253 int bound; 254 struct sockaddr *sa; 255 u_int32_t host_addr[4]; /* IPv4 or IPv6 */ 256 struct sockaddr_un sun; 257 mode_t oldmask; 258 259 if ((nconf->nc_semantics != NC_TPI_CLTS) && 260 (nconf->nc_semantics != NC_TPI_COTS) && 261 (nconf->nc_semantics != NC_TPI_COTS_ORD)) 262 return (1); /* not my type */ 263 #ifdef ND_DEBUG 264 if (debugging) { 265 int i; 266 char **s; 267 268 (void)fprintf(stderr, "%s: %ld lookup routines :\n", 269 nconf->nc_netid, nconf->nc_nlookups); 270 for (i = 0, s = nconf->nc_lookups; i < nconf->nc_nlookups; 271 i++, s++) 272 fprintf(stderr, "[%d] - %s\n", i, *s); 273 } 274 #endif 275 276 /* 277 * XXX - using RPC library internal functions. 278 */ 279 if ((strcmp(nconf->nc_netid, "local") == 0) || 280 (strcmp(nconf->nc_netid, "unix") == 0)) { 281 /* 282 * For other transports we call this later, for each socket we 283 * like to bind. 284 */ 285 if ((fd = __rpc_nconf2fd(nconf)) < 0) { 286 int non_fatal = 0; 287 if (errno == EPROTONOSUPPORT) 288 non_fatal = 1; 289 syslog(non_fatal?LOG_DEBUG:LOG_ERR, "cannot create socket for %s", 290 nconf->nc_netid); 291 return (1); 292 } 293 } 294 295 if (!__rpc_nconf2sockinfo(nconf, &si)) { 296 syslog(LOG_ERR, "cannot get information for %s", 297 nconf->nc_netid); 298 return (1); 299 } 300 301 if ((strcmp(nconf->nc_netid, "local") == 0) || 302 (strcmp(nconf->nc_netid, "unix") == 0)) { 303 memset(&sun, 0, sizeof sun); 304 sun.sun_family = AF_LOCAL; 305 unlink(_PATH_RPCBINDSOCK); 306 strcpy(sun.sun_path, _PATH_RPCBINDSOCK); 307 sun.sun_len = SUN_LEN(&sun); 308 addrlen = sizeof (struct sockaddr_un); 309 sa = (struct sockaddr *)&sun; 310 } else { 311 /* Get rpcbind's address on this transport */ 312 313 memset(&hints, 0, sizeof hints); 314 hints.ai_flags = AI_PASSIVE; 315 hints.ai_family = si.si_af; 316 hints.ai_socktype = si.si_socktype; 317 hints.ai_protocol = si.si_proto; 318 } 319 320 if ((strcmp(nconf->nc_netid, "local") != 0) && 321 (strcmp(nconf->nc_netid, "unix") != 0)) { 322 /* 323 * If no hosts were specified, just bind to INADDR_ANY. 324 * Otherwise make sure 127.0.0.1 is added to the list. 325 */ 326 nhostsbak = nhosts; 327 nhostsbak++; 328 hosts = realloc(hosts, nhostsbak * sizeof(char *)); 329 if (nhostsbak == 1) 330 hosts[0] = "*"; 331 else { 332 if (hints.ai_family == AF_INET) { 333 hosts[nhostsbak - 1] = "127.0.0.1"; 334 } else if (hints.ai_family == AF_INET6) { 335 hosts[nhostsbak - 1] = "::1"; 336 } else 337 return 1; 338 } 339 340 /* 341 * Bind to specific IPs if asked to 342 */ 343 bound = 0; 344 while (nhostsbak > 0) { 345 --nhostsbak; 346 /* 347 * XXX - using RPC library internal functions. 348 */ 349 if ((fd = __rpc_nconf2fd(nconf)) < 0) { 350 int non_fatal = 0; 351 if (errno == EPROTONOSUPPORT && 352 nconf->nc_semantics != NC_TPI_CLTS) 353 non_fatal = 1; 354 syslog(non_fatal ? LOG_DEBUG : LOG_ERR, 355 "cannot create socket for %s", nconf->nc_netid); 356 return (1); 357 } 358 switch (hints.ai_family) { 359 case AF_INET: 360 if (inet_pton(AF_INET, hosts[nhostsbak], 361 host_addr) == 1) { 362 hints.ai_flags &= AI_NUMERICHOST; 363 } else { 364 /* 365 * Skip if we have an AF_INET6 adress. 366 */ 367 if (inet_pton(AF_INET6, 368 hosts[nhostsbak], host_addr) == 1) { 369 close(fd); 370 continue; 371 } 372 } 373 break; 374 case AF_INET6: 375 if (inet_pton(AF_INET6, hosts[nhostsbak], 376 host_addr) == 1) { 377 hints.ai_flags &= AI_NUMERICHOST; 378 } else { 379 /* 380 * Skip if we have an AF_INET adress. 381 */ 382 if (inet_pton(AF_INET, hosts[nhostsbak], 383 host_addr) == 1) { 384 close(fd); 385 continue; 386 } 387 } 388 if (setsockopt(fd, IPPROTO_IPV6, 389 IPV6_V6ONLY, &on, sizeof on) < 0) { 390 syslog(LOG_ERR, 391 "can't set v6-only binding for " 392 "ipv6 socket: %m"); 393 continue; 394 } 395 break; 396 default: 397 break; 398 } 399 400 /* 401 * If no hosts were specified, just bind to INADDR_ANY 402 */ 403 if (strcmp("*", hosts[nhostsbak]) == 0) 404 hosts[nhostsbak] = NULL; 405 if ((strcmp(nconf->nc_netid, "local") != 0) && 406 (strcmp(nconf->nc_netid, "unix") != 0)) { 407 if ((aicode = getaddrinfo(hosts[nhostsbak], 408 servname, &hints, &res)) != 0) { 409 syslog(LOG_ERR, 410 "cannot get local address for %s: %s", 411 nconf->nc_netid, gai_strerror(aicode)); 412 continue; 413 } 414 addrlen = res->ai_addrlen; 415 sa = (struct sockaddr *)res->ai_addr; 416 } 417 oldmask = umask(S_IXUSR|S_IXGRP|S_IXOTH); 418 if (bind(fd, sa, addrlen) != 0) { 419 syslog(LOG_ERR, "cannot bind %s on %s: %m", 420 (hosts[nhostsbak] == NULL) ? "*" : 421 hosts[nhostsbak], nconf->nc_netid); 422 if (res != NULL) 423 freeaddrinfo(res); 424 continue; 425 } else 426 bound = 1; 427 (void)umask(oldmask); 428 429 /* Copy the address */ 430 taddr.addr.len = taddr.addr.maxlen = addrlen; 431 taddr.addr.buf = malloc(addrlen); 432 if (taddr.addr.buf == NULL) { 433 syslog(LOG_ERR, 434 "cannot allocate memory for %s address", 435 nconf->nc_netid); 436 if (res != NULL) 437 freeaddrinfo(res); 438 return 1; 439 } 440 memcpy(taddr.addr.buf, sa, addrlen); 441 #ifdef ND_DEBUG 442 if (debugging) { 443 /* 444 * for debugging print out our universal 445 * address 446 */ 447 char *uaddr; 448 struct netbuf nb; 449 450 nb.buf = sa; 451 nb.len = nb.maxlen = sa->sa_len; 452 uaddr = taddr2uaddr(nconf, &nb); 453 (void)fprintf(stderr, 454 "rpcbind : my address is %s\n", uaddr); 455 (void)free(uaddr); 456 } 457 #endif 458 459 if (nconf->nc_semantics != NC_TPI_CLTS) 460 listen(fd, SOMAXCONN); 461 462 my_xprt = (SVCXPRT *)svc_tli_create(fd, nconf, &taddr, 463 RPC_MAXDATASIZE, RPC_MAXDATASIZE); 464 if (my_xprt == (SVCXPRT *)NULL) { 465 syslog(LOG_ERR, "%s: could not create service", 466 nconf->nc_netid); 467 goto error; 468 } 469 } 470 if (!bound) 471 return 1; 472 } else { 473 oldmask = umask(S_IXUSR|S_IXGRP|S_IXOTH); 474 if (bind(fd, sa, addrlen) < 0) { 475 syslog(LOG_ERR, "cannot bind %s: %m", nconf->nc_netid); 476 if (res != NULL) 477 freeaddrinfo(res); 478 return 1; 479 } 480 (void) umask(oldmask); 481 482 /* Copy the address */ 483 taddr.addr.len = taddr.addr.maxlen = addrlen; 484 taddr.addr.buf = malloc(addrlen); 485 if (taddr.addr.buf == NULL) { 486 syslog(LOG_ERR, "cannot allocate memory for %s address", 487 nconf->nc_netid); 488 if (res != NULL) 489 freeaddrinfo(res); 490 return 1; 491 } 492 memcpy(taddr.addr.buf, sa, addrlen); 493 #ifdef ND_DEBUG 494 if (debugging) { 495 /* for debugging print out our universal address */ 496 char *uaddr; 497 struct netbuf nb; 498 499 nb.buf = sa; 500 nb.len = nb.maxlen = sa->sa_len; 501 uaddr = taddr2uaddr(nconf, &nb); 502 (void) fprintf(stderr, "rpcbind : my address is %s\n", 503 uaddr); 504 (void) free(uaddr); 505 } 506 #endif 507 508 if (nconf->nc_semantics != NC_TPI_CLTS) 509 listen(fd, SOMAXCONN); 510 511 my_xprt = (SVCXPRT *)svc_tli_create(fd, nconf, &taddr, 512 RPC_MAXDATASIZE, RPC_MAXDATASIZE); 513 if (my_xprt == (SVCXPRT *)NULL) { 514 syslog(LOG_ERR, "%s: could not create service", 515 nconf->nc_netid); 516 goto error; 517 } 518 } 519 520 #ifdef PORTMAP 521 /* 522 * Register both the versions for tcp/ip, udp/ip and local. 523 */ 524 if ((strcmp(nconf->nc_protofmly, NC_INET) == 0 && 525 (strcmp(nconf->nc_proto, NC_TCP) == 0 || 526 strcmp(nconf->nc_proto, NC_UDP) == 0)) || 527 (strcmp(nconf->nc_netid, "unix") == 0) || 528 (strcmp(nconf->nc_netid, "local") == 0)) { 529 struct pmaplist *pml; 530 531 if (!svc_register(my_xprt, PMAPPROG, PMAPVERS, 532 pmap_service, 0)) { 533 syslog(LOG_ERR, "could not register on %s", 534 nconf->nc_netid); 535 goto error; 536 } 537 pml = malloc(sizeof (struct pmaplist)); 538 if (pml == NULL) { 539 syslog(LOG_ERR, "no memory!"); 540 exit(1); 541 } 542 pml->pml_map.pm_prog = PMAPPROG; 543 pml->pml_map.pm_vers = PMAPVERS; 544 pml->pml_map.pm_port = PMAPPORT; 545 if (strcmp(nconf->nc_proto, NC_TCP) == 0) { 546 if (tcptrans[0]) { 547 syslog(LOG_ERR, 548 "cannot have more than one TCP transport"); 549 goto error; 550 } 551 tcptrans = strdup(nconf->nc_netid); 552 pml->pml_map.pm_prot = IPPROTO_TCP; 553 554 /* Let's snarf the universal address */ 555 /* "h1.h2.h3.h4.p1.p2" */ 556 tcp_uaddr = taddr2uaddr(nconf, &taddr.addr); 557 } else if (strcmp(nconf->nc_proto, NC_UDP) == 0) { 558 if (udptrans[0]) { 559 syslog(LOG_ERR, 560 "cannot have more than one UDP transport"); 561 goto error; 562 } 563 udptrans = strdup(nconf->nc_netid); 564 pml->pml_map.pm_prot = IPPROTO_UDP; 565 566 /* Let's snarf the universal address */ 567 /* "h1.h2.h3.h4.p1.p2" */ 568 udp_uaddr = taddr2uaddr(nconf, &taddr.addr); 569 } else if (strcmp(nconf->nc_netid, "local") == 0) 570 pml->pml_map.pm_prot = IPPROTO_ST; 571 else if (strcmp(nconf->nc_netid, "unix") == 0) 572 pml->pml_map.pm_prot = IPPROTO_ST; 573 pml->pml_next = list_pml; 574 list_pml = pml; 575 576 /* Add version 3 information */ 577 pml = malloc(sizeof (struct pmaplist)); 578 if (pml == NULL) { 579 syslog(LOG_ERR, "no memory!"); 580 exit(1); 581 } 582 pml->pml_map = list_pml->pml_map; 583 pml->pml_map.pm_vers = RPCBVERS; 584 pml->pml_next = list_pml; 585 list_pml = pml; 586 587 /* Add version 4 information */ 588 pml = malloc (sizeof (struct pmaplist)); 589 if (pml == NULL) { 590 syslog(LOG_ERR, "no memory!"); 591 exit(1); 592 } 593 pml->pml_map = list_pml->pml_map; 594 pml->pml_map.pm_vers = RPCBVERS4; 595 pml->pml_next = list_pml; 596 list_pml = pml; 597 598 /* Also add version 2 stuff to rpcbind list */ 599 rbllist_add(PMAPPROG, PMAPVERS, nconf, &taddr.addr); 600 } 601 #endif 602 603 /* version 3 registration */ 604 if (!svc_reg(my_xprt, RPCBPROG, RPCBVERS, rpcb_service_3, NULL)) { 605 syslog(LOG_ERR, "could not register %s version 3", 606 nconf->nc_netid); 607 goto error; 608 } 609 rbllist_add(RPCBPROG, RPCBVERS, nconf, &taddr.addr); 610 611 /* version 4 registration */ 612 if (!svc_reg(my_xprt, RPCBPROG, RPCBVERS4, rpcb_service_4, NULL)) { 613 syslog(LOG_ERR, "could not register %s version 4", 614 nconf->nc_netid); 615 goto error; 616 } 617 rbllist_add(RPCBPROG, RPCBVERS4, nconf, &taddr.addr); 618 619 /* decide if bound checking works for this transport */ 620 status = add_bndlist(nconf, &taddr.addr); 621 #ifdef BIND_DEBUG 622 if (debugging) { 623 if (status < 0) { 624 fprintf(stderr, "Error in finding bind status for %s\n", 625 nconf->nc_netid); 626 } else if (status == 0) { 627 fprintf(stderr, "check binding for %s\n", 628 nconf->nc_netid); 629 } else if (status > 0) { 630 fprintf(stderr, "No check binding for %s\n", 631 nconf->nc_netid); 632 } 633 } 634 #endif 635 /* 636 * rmtcall only supported on CLTS transports for now. 637 */ 638 if (nconf->nc_semantics == NC_TPI_CLTS) { 639 status = create_rmtcall_fd(nconf); 640 641 #ifdef BIND_DEBUG 642 if (debugging) { 643 if (status < 0) { 644 fprintf(stderr, 645 "Could not create rmtcall fd for %s\n", 646 nconf->nc_netid); 647 } else { 648 fprintf(stderr, "rmtcall fd for %s is %d\n", 649 nconf->nc_netid, status); 650 } 651 } 652 #endif 653 } 654 return (0); 655 error: 656 close(fd); 657 return (1); 658 } 659 660 static void 661 rbllist_add(rpcprog_t prog, rpcvers_t vers, struct netconfig *nconf, 662 struct netbuf *addr) 663 { 664 rpcblist_ptr rbl; 665 666 rbl = malloc(sizeof (rpcblist)); 667 if (rbl == NULL) { 668 syslog(LOG_ERR, "no memory!"); 669 exit(1); 670 } 671 672 rbl->rpcb_map.r_prog = prog; 673 rbl->rpcb_map.r_vers = vers; 674 rbl->rpcb_map.r_netid = strdup(nconf->nc_netid); 675 rbl->rpcb_map.r_addr = taddr2uaddr(nconf, addr); 676 rbl->rpcb_map.r_owner = strdup(superuser); 677 rbl->rpcb_next = list_rbl; /* Attach to global list */ 678 list_rbl = rbl; 679 } 680 681 /* 682 * Catch the signal and die 683 */ 684 static void 685 terminate(int dummy __unused) 686 { 687 close(rpcbindlockfd); 688 #ifdef WARMSTART 689 syslog(LOG_ERR, 690 "rpcbind terminating on signal. Restart with \"rpcbind -w\""); 691 write_warmstart(); /* Dump yourself */ 692 #endif 693 exit(2); 694 } 695 696 void 697 rpcbind_abort() 698 { 699 #ifdef WARMSTART 700 write_warmstart(); /* Dump yourself */ 701 #endif 702 abort(); 703 } 704 705 /* get command line options */ 706 static void 707 parseargs(int argc, char *argv[]) 708 { 709 int c; 710 711 #ifdef WARMSTART 712 #define WSOP "w" 713 #else 714 #define WSOP "" 715 #endif 716 while ((c = getopt(argc, argv, "6adh:iLls" WSOP)) != -1) { 717 switch (c) { 718 case '6': 719 ipv6_only = 1; 720 break; 721 case 'a': 722 doabort = 1; /* when debugging, do an abort on */ 723 break; /* errors; for rpcbind developers */ 724 /* only! */ 725 case 'd': 726 debugging = 1; 727 break; 728 case 'h': 729 ++nhosts; 730 hosts = realloc(hosts, nhosts * sizeof(char *)); 731 if (hosts == NULL) 732 errx(1, "Out of memory"); 733 hosts[nhosts - 1] = strdup(optarg); 734 if (hosts[nhosts - 1] == NULL) 735 errx(1, "Out of memory"); 736 break; 737 case 'i': 738 insecure = 1; 739 break; 740 case 'L': 741 oldstyle_local = 1; 742 break; 743 case 'l': 744 verboselog = 1; 745 break; 746 case 's': 747 runasdaemon = 1; 748 break; 749 #ifdef WARMSTART 750 case 'w': 751 warmstart = 1; 752 break; 753 #endif 754 default: /* error */ 755 fprintf(stderr, 756 "usage: rpcbind [-6adiLls%s] [-h bindip]\n", 757 WSOP); 758 exit (1); 759 } 760 } 761 if (doabort && !debugging) { 762 fprintf(stderr, 763 "-a (abort) specified without -d (debugging) -- ignored.\n"); 764 doabort = 0; 765 } 766 #undef WSOP 767 } 768 769 void 770 reap(int dummy __unused) 771 { 772 int save_errno = errno; 773 774 while (wait3(NULL, WNOHANG, NULL) > 0) 775 ; 776 errno = save_errno; 777 } 778 779 void 780 toggle_verboselog(int dummy __unused) 781 { 782 verboselog = !verboselog; 783 } 784