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 __P((int, char *[])); 116 117 static int init_transport __P((struct netconfig *)); 118 static void rbllist_add __P((rpcprog_t, rpcvers_t, struct netconfig *, 119 struct netbuf *)); 120 static void terminate __P((int)); 121 static void parseargs __P((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 checkbind; 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 checkbind = 1; 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 continue; 370 } 371 break; 372 case AF_INET6: 373 if (inet_pton(AF_INET6, hosts[nhostsbak], 374 host_addr) == 1) { 375 hints.ai_flags &= AI_NUMERICHOST; 376 } else { 377 /* 378 * Skip if we have an AF_INET adress. 379 */ 380 if (inet_pton(AF_INET, hosts[nhostsbak], 381 host_addr) == 1) 382 continue; 383 } 384 if (setsockopt(fd, IPPROTO_IPV6, 385 IPV6_V6ONLY, &on, sizeof on) < 0) { 386 syslog(LOG_ERR, 387 "can't set v6-only binding for " 388 "ipv6 socket: %m"); 389 continue; 390 } 391 break; 392 default: 393 break; 394 } 395 396 /* 397 * If no hosts were specified, just bind to INADDR_ANY 398 */ 399 if (strcmp("*", hosts[nhostsbak]) == 0) 400 hosts[nhostsbak] = NULL; 401 if ((strcmp(nconf->nc_netid, "local") != 0) && 402 (strcmp(nconf->nc_netid, "unix") != 0)) { 403 if ((aicode = getaddrinfo(hosts[nhostsbak], 404 servname, &hints, &res)) != 0) { 405 syslog(LOG_ERR, 406 "cannot get local address for %s: %s", 407 nconf->nc_netid, gai_strerror(aicode)); 408 continue; 409 } 410 addrlen = res->ai_addrlen; 411 sa = (struct sockaddr *)res->ai_addr; 412 } 413 oldmask = umask(S_IXUSR|S_IXGRP|S_IXOTH); 414 if (bind(fd, sa, addrlen) != 0) { 415 syslog(LOG_ERR, "cannot bind %s on %s: %m", 416 (hosts[nhostsbak] == NULL) ? "*" : 417 hosts[nhostsbak], nconf->nc_netid); 418 if (res != NULL) 419 freeaddrinfo(res); 420 continue; 421 } else 422 checkbind++; 423 (void)umask(oldmask); 424 425 /* Copy the address */ 426 taddr.addr.len = taddr.addr.maxlen = addrlen; 427 taddr.addr.buf = malloc(addrlen); 428 if (taddr.addr.buf == NULL) { 429 syslog(LOG_ERR, 430 "cannot allocate memory for %s address", 431 nconf->nc_netid); 432 if (res != NULL) 433 freeaddrinfo(res); 434 return 1; 435 } 436 memcpy(taddr.addr.buf, sa, addrlen); 437 #ifdef ND_DEBUG 438 if (debugging) { 439 /* 440 * for debugging print out our universal 441 * address 442 */ 443 char *uaddr; 444 struct netbuf nb; 445 446 nb.buf = sa; 447 nb.len = nb.maxlen = sa->sa_len; 448 uaddr = taddr2uaddr(nconf, &nb); 449 (void)fprintf(stderr, 450 "rpcbind : my address is %s\n", uaddr); 451 (void)free(uaddr); 452 } 453 #endif 454 455 if (nconf->nc_semantics != NC_TPI_CLTS) 456 listen(fd, SOMAXCONN); 457 458 my_xprt = (SVCXPRT *)svc_tli_create(fd, nconf, &taddr, 459 RPC_MAXDATASIZE, RPC_MAXDATASIZE); 460 if (my_xprt == (SVCXPRT *)NULL) { 461 syslog(LOG_ERR, "%s: could not create service", 462 nconf->nc_netid); 463 goto error; 464 } 465 } 466 if (!checkbind) 467 return 1; 468 } else { 469 oldmask = umask(S_IXUSR|S_IXGRP|S_IXOTH); 470 if (bind(fd, sa, addrlen) < 0) { 471 syslog(LOG_ERR, "cannot bind %s: %m", nconf->nc_netid); 472 if (res != NULL) 473 freeaddrinfo(res); 474 return 1; 475 } 476 (void) umask(oldmask); 477 478 /* Copy the address */ 479 taddr.addr.len = taddr.addr.maxlen = addrlen; 480 taddr.addr.buf = malloc(addrlen); 481 if (taddr.addr.buf == NULL) { 482 syslog(LOG_ERR, "cannot allocate memory for %s address", 483 nconf->nc_netid); 484 if (res != NULL) 485 freeaddrinfo(res); 486 return 1; 487 } 488 memcpy(taddr.addr.buf, sa, addrlen); 489 #ifdef ND_DEBUG 490 if (debugging) { 491 /* for debugging print out our universal address */ 492 char *uaddr; 493 struct netbuf nb; 494 495 nb.buf = sa; 496 nb.len = nb.maxlen = sa->sa_len; 497 uaddr = taddr2uaddr(nconf, &nb); 498 (void) fprintf(stderr, "rpcbind : my address is %s\n", 499 uaddr); 500 (void) free(uaddr); 501 } 502 #endif 503 504 if (nconf->nc_semantics != NC_TPI_CLTS) 505 listen(fd, SOMAXCONN); 506 507 my_xprt = (SVCXPRT *)svc_tli_create(fd, nconf, &taddr, 508 RPC_MAXDATASIZE, RPC_MAXDATASIZE); 509 if (my_xprt == (SVCXPRT *)NULL) { 510 syslog(LOG_ERR, "%s: could not create service", 511 nconf->nc_netid); 512 goto error; 513 } 514 } 515 516 #ifdef PORTMAP 517 /* 518 * Register both the versions for tcp/ip, udp/ip and local. 519 */ 520 if ((strcmp(nconf->nc_protofmly, NC_INET) == 0 && 521 (strcmp(nconf->nc_proto, NC_TCP) == 0 || 522 strcmp(nconf->nc_proto, NC_UDP) == 0)) || 523 (strcmp(nconf->nc_netid, "unix") == 0) || 524 (strcmp(nconf->nc_netid, "local") == 0)) { 525 struct pmaplist *pml; 526 527 if (!svc_register(my_xprt, PMAPPROG, PMAPVERS, 528 pmap_service, 0)) { 529 syslog(LOG_ERR, "could not register on %s", 530 nconf->nc_netid); 531 goto error; 532 } 533 pml = malloc(sizeof (struct pmaplist)); 534 if (pml == NULL) { 535 syslog(LOG_ERR, "no memory!"); 536 exit(1); 537 } 538 pml->pml_map.pm_prog = PMAPPROG; 539 pml->pml_map.pm_vers = PMAPVERS; 540 pml->pml_map.pm_port = PMAPPORT; 541 if (strcmp(nconf->nc_proto, NC_TCP) == 0) { 542 if (tcptrans[0]) { 543 syslog(LOG_ERR, 544 "cannot have more than one TCP transport"); 545 goto error; 546 } 547 tcptrans = strdup(nconf->nc_netid); 548 pml->pml_map.pm_prot = IPPROTO_TCP; 549 550 /* Let's snarf the universal address */ 551 /* "h1.h2.h3.h4.p1.p2" */ 552 tcp_uaddr = taddr2uaddr(nconf, &taddr.addr); 553 } else if (strcmp(nconf->nc_proto, NC_UDP) == 0) { 554 if (udptrans[0]) { 555 syslog(LOG_ERR, 556 "cannot have more than one UDP transport"); 557 goto error; 558 } 559 udptrans = strdup(nconf->nc_netid); 560 pml->pml_map.pm_prot = IPPROTO_UDP; 561 562 /* Let's snarf the universal address */ 563 /* "h1.h2.h3.h4.p1.p2" */ 564 udp_uaddr = taddr2uaddr(nconf, &taddr.addr); 565 } else if (strcmp(nconf->nc_netid, "local") == 0) 566 pml->pml_map.pm_prot = IPPROTO_ST; 567 else if (strcmp(nconf->nc_netid, "unix") == 0) 568 pml->pml_map.pm_prot = IPPROTO_ST; 569 pml->pml_next = list_pml; 570 list_pml = pml; 571 572 /* Add version 3 information */ 573 pml = malloc(sizeof (struct pmaplist)); 574 if (pml == NULL) { 575 syslog(LOG_ERR, "no memory!"); 576 exit(1); 577 } 578 pml->pml_map = list_pml->pml_map; 579 pml->pml_map.pm_vers = RPCBVERS; 580 pml->pml_next = list_pml; 581 list_pml = pml; 582 583 /* Add version 4 information */ 584 pml = malloc (sizeof (struct pmaplist)); 585 if (pml == NULL) { 586 syslog(LOG_ERR, "no memory!"); 587 exit(1); 588 } 589 pml->pml_map = list_pml->pml_map; 590 pml->pml_map.pm_vers = RPCBVERS4; 591 pml->pml_next = list_pml; 592 list_pml = pml; 593 594 /* Also add version 2 stuff to rpcbind list */ 595 rbllist_add(PMAPPROG, PMAPVERS, nconf, &taddr.addr); 596 } 597 #endif 598 599 /* version 3 registration */ 600 if (!svc_reg(my_xprt, RPCBPROG, RPCBVERS, rpcb_service_3, NULL)) { 601 syslog(LOG_ERR, "could not register %s version 3", 602 nconf->nc_netid); 603 goto error; 604 } 605 rbllist_add(RPCBPROG, RPCBVERS, nconf, &taddr.addr); 606 607 /* version 4 registration */ 608 if (!svc_reg(my_xprt, RPCBPROG, RPCBVERS4, rpcb_service_4, NULL)) { 609 syslog(LOG_ERR, "could not register %s version 4", 610 nconf->nc_netid); 611 goto error; 612 } 613 rbllist_add(RPCBPROG, RPCBVERS4, nconf, &taddr.addr); 614 615 /* decide if bound checking works for this transport */ 616 status = add_bndlist(nconf, &taddr.addr); 617 #ifdef BIND_DEBUG 618 if (debugging) { 619 if (status < 0) { 620 fprintf(stderr, "Error in finding bind status for %s\n", 621 nconf->nc_netid); 622 } else if (status == 0) { 623 fprintf(stderr, "check binding for %s\n", 624 nconf->nc_netid); 625 } else if (status > 0) { 626 fprintf(stderr, "No check binding for %s\n", 627 nconf->nc_netid); 628 } 629 } 630 #endif 631 /* 632 * rmtcall only supported on CLTS transports for now. 633 */ 634 if (nconf->nc_semantics == NC_TPI_CLTS) { 635 status = create_rmtcall_fd(nconf); 636 637 #ifdef BIND_DEBUG 638 if (debugging) { 639 if (status < 0) { 640 fprintf(stderr, 641 "Could not create rmtcall fd for %s\n", 642 nconf->nc_netid); 643 } else { 644 fprintf(stderr, "rmtcall fd for %s is %d\n", 645 nconf->nc_netid, status); 646 } 647 } 648 #endif 649 } 650 return (0); 651 error: 652 close(fd); 653 return (1); 654 } 655 656 static void 657 rbllist_add(rpcprog_t prog, rpcvers_t vers, struct netconfig *nconf, 658 struct netbuf *addr) 659 { 660 rpcblist_ptr rbl; 661 662 rbl = malloc(sizeof (rpcblist)); 663 if (rbl == NULL) { 664 syslog(LOG_ERR, "no memory!"); 665 exit(1); 666 } 667 668 rbl->rpcb_map.r_prog = prog; 669 rbl->rpcb_map.r_vers = vers; 670 rbl->rpcb_map.r_netid = strdup(nconf->nc_netid); 671 rbl->rpcb_map.r_addr = taddr2uaddr(nconf, addr); 672 rbl->rpcb_map.r_owner = strdup(superuser); 673 rbl->rpcb_next = list_rbl; /* Attach to global list */ 674 list_rbl = rbl; 675 } 676 677 /* 678 * Catch the signal and die 679 */ 680 static void 681 terminate(int dummy __unused) 682 { 683 close(rpcbindlockfd); 684 #ifdef WARMSTART 685 syslog(LOG_ERR, 686 "rpcbind terminating on signal. Restart with \"rpcbind -w\""); 687 write_warmstart(); /* Dump yourself */ 688 #endif 689 exit(2); 690 } 691 692 void 693 rpcbind_abort() 694 { 695 #ifdef WARMSTART 696 write_warmstart(); /* Dump yourself */ 697 #endif 698 abort(); 699 } 700 701 /* get command line options */ 702 static void 703 parseargs(int argc, char *argv[]) 704 { 705 int c; 706 707 #ifdef WARMSTART 708 #define WSOP "w" 709 #else 710 #define WSOP "" 711 #endif 712 while ((c = getopt(argc, argv, "6adh:iLls" WSOP)) != -1) { 713 switch (c) { 714 case '6': 715 ipv6_only = 1; 716 break; 717 case 'a': 718 doabort = 1; /* when debugging, do an abort on */ 719 break; /* errors; for rpcbind developers */ 720 /* only! */ 721 case 'd': 722 debugging = 1; 723 break; 724 case 'h': 725 ++nhosts; 726 hosts = realloc(hosts, nhosts * sizeof(char *)); 727 if (hosts == NULL) 728 errx(1, "Out of memory"); 729 hosts[nhosts - 1] = strdup(optarg); 730 if (hosts[nhosts - 1] == NULL) 731 errx(1, "Out of memory"); 732 break; 733 case 'i': 734 insecure = 1; 735 break; 736 case 'L': 737 oldstyle_local = 1; 738 break; 739 case 'l': 740 verboselog = 1; 741 break; 742 case 's': 743 runasdaemon = 1; 744 break; 745 #ifdef WARMSTART 746 case 'w': 747 warmstart = 1; 748 break; 749 #endif 750 default: /* error */ 751 fprintf(stderr, 752 "usage: rpcbind [-6adiLls%s] [-h bindip]\n", 753 WSOP); 754 exit (1); 755 } 756 } 757 if (doabort && !debugging) { 758 fprintf(stderr, 759 "-a (abort) specified without -d (debugging) -- ignored.\n"); 760 doabort = 0; 761 } 762 #undef WSOP 763 } 764 765 void 766 reap(int dummy __unused) 767 { 768 int save_errno = errno; 769 770 while (wait3(NULL, WNOHANG, NULL) > 0) 771 ; 772 errno = save_errno; 773 } 774 775 void 776 toggle_verboselog(int dummy __unused) 777 { 778 verboselog = !verboselog; 779 } 780