1 /*
2 * Copyright (c) 2009, Sun Microsystems, Inc.
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions are met:
7 * - Redistributions of source code must retain the above copyright notice,
8 * this list of conditions and the following disclaimer.
9 * - Redistributions in binary form must reproduce the above copyright notice,
10 * this list of conditions and the following disclaimer in the documentation
11 * and/or other materials provided with the distribution.
12 * - Neither the name of Sun Microsystems, Inc. nor the names of its
13 * contributors may be used to endorse or promote products derived
14 * from this software without specific prior written permission.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
17 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
20 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
21 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
22 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
23 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
24 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
25 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
26 * POSSIBILITY OF SUCH DAMAGE.
27 *
28 * @(#)rpcbind.c 1.19 94/04/25 SMI; 1.35 89/04/21 Copyr 1984 Sun Micro
29 * $NetBSD: rpcbind.c,v 1.3 2002/11/08 00:16:40 fvdl Exp $
30 * $FreeBSD: src/usr.sbin/rpcbind/rpcbind.c,v 1.20 2008/02/14 20:12:23 yar Exp $
31 */
32 /*
33 * Copyright (c) 1984 - 1991 by Sun Microsystems, Inc.
34 */
35
36 /*
37 * rpcbind.c
38 * Implements the program, version to address mapping for rpc.
39 *
40 */
41
42 #include <sys/types.h>
43 #include <sys/stat.h>
44 #include <sys/errno.h>
45 #include <sys/time.h>
46 #include <sys/resource.h>
47 #include <sys/wait.h>
48 #include <sys/signal.h>
49 #include <sys/socket.h>
50 #include <sys/un.h>
51 #include <rpc/rpc.h>
52 #include <rpc/rpc_com.h>
53 #ifdef PORTMAP
54 #include <netinet/in.h>
55 #endif
56 #include <arpa/inet.h>
57 #include <fcntl.h>
58 #include <netdb.h>
59 #include <stdio.h>
60 #include <netconfig.h>
61 #include <stdlib.h>
62 #include <unistd.h>
63 #include <syslog.h>
64 #include <err.h>
65 #include <libutil.h>
66 #include <pwd.h>
67 #include <string.h>
68 #include "rpcbind.h"
69
70 /* Global variables */
71 int debugging = 0; /* Tell me what's going on */
72 int doabort = 0; /* When debugging, do an abort on errors */
73 rpcblist_ptr list_rbl; /* A list of version 3/4 rpcbind services */
74
75 /* who to suid to if -s is given */
76 #define RUN_AS "daemon"
77
78 #define RPCBINDDLOCK "/var/run/rpcbind.lock"
79
80 int runasdaemon = 0;
81 int insecure = 0;
82 int oldstyle_local = 0;
83 int verboselog = 0;
84
85 char **hosts = NULL;
86 int ipv6_only = 0;
87 int nhosts = 0;
88 int on = 1;
89 int rpcbindlockfd;
90
91 #ifdef WARMSTART
92 /* Local Variable */
93 static int warmstart = 0; /* Grab an old copy of registrations. */
94 #endif
95
96 #ifdef PORTMAP
97 struct pmaplist *list_pml; /* A list of version 2 rpcbind services */
98 char *udptrans; /* Name of UDP transport */
99 char *tcptrans; /* Name of TCP transport */
100 char *udp_uaddr; /* Universal UDP address */
101 char *tcp_uaddr; /* Universal TCP address */
102 #endif
103 static char servname[] = "rpcbind";
104 static char superuser[] = "superuser";
105
106 static int init_transport(struct netconfig *);
107 static void rbllist_add(rpcprog_t, rpcvers_t, struct netconfig *,
108 struct netbuf *);
109 static void terminate(int);
110 static void parseargs(int, char *[]);
111
112 int
main(int argc,char * argv[])113 main(int argc, char *argv[])
114 {
115 struct netconfig *nconf;
116 void *nc_handle; /* Net config handle */
117 struct rlimit rl;
118 int maxrec = RPC_MAXDATASIZE;
119
120 parseargs(argc, argv);
121
122 /* Check that another rpcbind isn't already running. */
123 if ((rpcbindlockfd = (open(RPCBINDDLOCK,
124 O_RDONLY|O_CREAT, 0444))) == -1)
125 err(1, "%s", RPCBINDDLOCK);
126
127 if(flock(rpcbindlockfd, LOCK_EX|LOCK_NB) == -1 && errno == EWOULDBLOCK)
128 errx(1, "another rpcbind is already running. Aborting");
129
130 getrlimit(RLIMIT_NOFILE, &rl);
131 if (rl.rlim_cur < 128) {
132 if (rl.rlim_max <= 128)
133 rl.rlim_cur = rl.rlim_max;
134 else
135 rl.rlim_cur = 128;
136 setrlimit(RLIMIT_NOFILE, &rl);
137 }
138 openlog("rpcbind", LOG_CONS, LOG_DAEMON);
139 if (geteuid()) { /* This command allowed only to root */
140 fprintf(stderr, "Sorry. You are not superuser\n");
141 exit(1);
142 }
143 nc_handle = setnetconfig(); /* open netconfig file */
144 if (nc_handle == NULL) {
145 syslog(LOG_ERR, "could not read /etc/netconfig");
146 exit(1);
147 }
148 #ifdef PORTMAP
149 udptrans = "";
150 tcptrans = "";
151 #endif
152
153 nconf = getnetconfigent("local");
154 if (nconf == NULL)
155 nconf = getnetconfigent("unix");
156 if (nconf == NULL) {
157 syslog(LOG_ERR, "%s: can't find local transport\n", argv[0]);
158 exit(1);
159 }
160
161 rpc_control(RPC_SVC_CONNMAXREC_SET, &maxrec);
162
163 init_transport(nconf);
164
165 while ((nconf = getnetconfig(nc_handle))) {
166 if (nconf->nc_flag & NC_VISIBLE)
167 if (ipv6_only != 1 || strcmp(nconf->nc_protofmly, "inet") != 0)
168 init_transport(nconf);
169 }
170 endnetconfig(nc_handle);
171
172 /* catch the usual termination signals for graceful exit */
173 signal(SIGCHLD, reap);
174 signal(SIGINT, terminate);
175 signal(SIGTERM, terminate);
176 signal(SIGQUIT, terminate);
177 /* ignore others that could get sent */
178 signal(SIGPIPE, SIG_IGN);
179 signal(SIGHUP, SIG_IGN);
180 signal(SIGUSR1, SIG_IGN);
181 signal(SIGUSR2, SIG_IGN);
182 #ifdef WARMSTART
183 if (warmstart) {
184 read_warmstart();
185 }
186 #endif
187 if (debugging) {
188 printf("rpcbind debugging enabled.");
189 if (doabort) {
190 printf(" Will abort on errors!\n");
191 } else {
192 printf("\n");
193 }
194 } else {
195 if (daemon(0, 0))
196 err(1, "fork failed");
197 }
198
199 if (runasdaemon) {
200 struct passwd *p;
201
202 if((p = getpwnam(RUN_AS)) == NULL) {
203 syslog(LOG_ERR, "cannot get uid of daemon: %m");
204 exit(1);
205 }
206 if (setuid(p->pw_uid) == -1) {
207 syslog(LOG_ERR, "setuid to daemon failed: %m");
208 exit(1);
209 }
210 }
211
212 network_init();
213
214 my_svc_run();
215 syslog(LOG_ERR, "svc_run returned unexpectedly");
216 rpcbind_abort();
217 /* NOTREACHED */
218
219 return 0;
220 }
221
222 /*
223 * Adds the entry into the rpcbind database.
224 * If PORTMAP, then for UDP and TCP, it adds the entries for version 2 also
225 * Returns 0 if succeeds, else fails
226 */
227 static int
init_transport(struct netconfig * nconf)228 init_transport(struct netconfig *nconf)
229 {
230 int fd;
231 struct t_bind taddr;
232 struct addrinfo hints, *res = NULL;
233 struct __rpc_sockinfo si;
234 SVCXPRT *my_xprt;
235 int status; /* bound checking ? */
236 int aicode;
237 int addrlen;
238 int nhostsbak;
239 int bound;
240 struct sockaddr *sa;
241 u_int32_t host_addr[4]; /* IPv4 or IPv6 */
242 struct sockaddr_un sun;
243 mode_t oldmask;
244
245 if ((nconf->nc_semantics != NC_TPI_CLTS) &&
246 (nconf->nc_semantics != NC_TPI_COTS) &&
247 (nconf->nc_semantics != NC_TPI_COTS_ORD))
248 return (1); /* not my type */
249 #ifdef ND_DEBUG
250 if (debugging) {
251 int i;
252 char **s;
253
254 fprintf(stderr, "%s: %ld lookup routines :\n",
255 nconf->nc_netid, nconf->nc_nlookups);
256 for (i = 0, s = nconf->nc_lookups; i < nconf->nc_nlookups;
257 i++, s++)
258 fprintf(stderr, "[%d] - %s\n", i, *s);
259 }
260 #endif
261
262 /*
263 * XXX - using RPC library internal functions.
264 */
265 if ((strcmp(nconf->nc_netid, "local") == 0) ||
266 (strcmp(nconf->nc_netid, "unix") == 0)) {
267 /*
268 * For other transports we call this later, for each socket we
269 * like to bind.
270 */
271 if ((fd = __rpc_nconf2fd(nconf)) < 0) {
272 int non_fatal = 0;
273 if (errno == EPROTONOSUPPORT)
274 non_fatal = 1;
275 syslog(non_fatal?LOG_DEBUG:LOG_ERR, "cannot create socket for %s",
276 nconf->nc_netid);
277 return (1);
278 }
279 }
280
281 if (!__rpc_nconf2sockinfo(nconf, &si)) {
282 syslog(LOG_ERR, "cannot get information for %s",
283 nconf->nc_netid);
284 return (1);
285 }
286
287 if ((strcmp(nconf->nc_netid, "local") == 0) ||
288 (strcmp(nconf->nc_netid, "unix") == 0)) {
289 memset(&sun, 0, sizeof sun);
290 sun.sun_family = AF_LOCAL;
291 unlink(_PATH_RPCBINDSOCK);
292 strcpy(sun.sun_path, _PATH_RPCBINDSOCK);
293 sun.sun_len = SUN_LEN(&sun);
294 addrlen = sizeof (struct sockaddr_un);
295 sa = (struct sockaddr *)&sun;
296 } else {
297 /* Get rpcbind's address on this transport */
298
299 memset(&hints, 0, sizeof hints);
300 hints.ai_flags = AI_PASSIVE;
301 hints.ai_family = si.si_af;
302 hints.ai_socktype = si.si_socktype;
303 hints.ai_protocol = si.si_proto;
304 }
305
306 if ((strcmp(nconf->nc_netid, "local") != 0) &&
307 (strcmp(nconf->nc_netid, "unix") != 0)) {
308 /*
309 * If no hosts were specified, just bind to INADDR_ANY.
310 * Otherwise make sure 127.0.0.1 is added to the list.
311 */
312 nhostsbak = nhosts;
313 nhostsbak++;
314 hosts = realloc(hosts, nhostsbak * sizeof(char *));
315 if (nhostsbak == 1)
316 hosts[0] = "*";
317 else {
318 if (hints.ai_family == AF_INET) {
319 hosts[nhostsbak - 1] = "127.0.0.1";
320 } else if (hints.ai_family == AF_INET6) {
321 hosts[nhostsbak - 1] = "::1";
322 } else
323 return 1;
324 }
325
326 /*
327 * Bind to specific IPs if asked to
328 */
329 bound = 0;
330 while (nhostsbak > 0) {
331 --nhostsbak;
332 /*
333 * XXX - using RPC library internal functions.
334 */
335 if ((fd = __rpc_nconf2fd(nconf)) < 0) {
336 int non_fatal = 0;
337 if (errno == EPROTONOSUPPORT &&
338 nconf->nc_semantics != NC_TPI_CLTS)
339 non_fatal = 1;
340 syslog(non_fatal ? LOG_DEBUG : LOG_ERR,
341 "cannot create socket for %s", nconf->nc_netid);
342 return (1);
343 }
344 switch (hints.ai_family) {
345 case AF_INET:
346 if (inet_pton(AF_INET, hosts[nhostsbak],
347 host_addr) == 1) {
348 hints.ai_flags &= AI_NUMERICHOST;
349 } else {
350 /*
351 * Skip if we have an AF_INET6 address.
352 */
353 if (inet_pton(AF_INET6,
354 hosts[nhostsbak], host_addr) == 1) {
355 close(fd);
356 continue;
357 }
358 }
359 break;
360 case AF_INET6:
361 if (inet_pton(AF_INET6, hosts[nhostsbak],
362 host_addr) == 1) {
363 hints.ai_flags &= AI_NUMERICHOST;
364 } else {
365 /*
366 * Skip if we have an AF_INET address.
367 */
368 if (inet_pton(AF_INET, hosts[nhostsbak],
369 host_addr) == 1) {
370 close(fd);
371 continue;
372 }
373 }
374 if (setsockopt(fd, IPPROTO_IPV6,
375 IPV6_V6ONLY, &on, sizeof on) < 0) {
376 syslog(LOG_ERR,
377 "can't set v6-only binding for "
378 "ipv6 socket: %m");
379 continue;
380 }
381 break;
382 default:
383 break;
384 }
385
386 /*
387 * If no hosts were specified, just bind to INADDR_ANY
388 */
389 if (strcmp("*", hosts[nhostsbak]) == 0)
390 hosts[nhostsbak] = NULL;
391 if ((strcmp(nconf->nc_netid, "local") != 0) &&
392 (strcmp(nconf->nc_netid, "unix") != 0)) {
393 if ((aicode = getaddrinfo(hosts[nhostsbak],
394 servname, &hints, &res)) != 0) {
395 syslog(LOG_ERR,
396 "cannot get local address for %s: %s",
397 nconf->nc_netid, gai_strerror(aicode));
398 continue;
399 }
400 addrlen = res->ai_addrlen;
401 sa = (struct sockaddr *)res->ai_addr;
402 }
403 oldmask = umask(S_IXUSR|S_IXGRP|S_IXOTH);
404 if (bind(fd, sa, addrlen) != 0) {
405 syslog(LOG_ERR, "cannot bind %s on %s: %m",
406 (hosts[nhostsbak] == NULL) ? "*" :
407 hosts[nhostsbak], nconf->nc_netid);
408 if (res != NULL)
409 freeaddrinfo(res);
410 continue;
411 } else
412 bound = 1;
413 umask(oldmask);
414
415 /* Copy the address */
416 taddr.addr.len = taddr.addr.maxlen = addrlen;
417 taddr.addr.buf = malloc(addrlen);
418 if (taddr.addr.buf == NULL) {
419 syslog(LOG_ERR,
420 "cannot allocate memory for %s address",
421 nconf->nc_netid);
422 if (res != NULL)
423 freeaddrinfo(res);
424 return 1;
425 }
426 memcpy(taddr.addr.buf, sa, addrlen);
427 #ifdef ND_DEBUG
428 if (debugging) {
429 /*
430 * for debugging print out our universal
431 * address
432 */
433 char *uaddr;
434 struct netbuf nb;
435
436 nb.buf = sa;
437 nb.len = nb.maxlen = sa->sa_len;
438 uaddr = taddr2uaddr(nconf, &nb);
439 fprintf(stderr, "rpcbind : my address is %s\n", uaddr);
440 free(uaddr);
441 }
442 #endif
443
444 if (nconf->nc_semantics != NC_TPI_CLTS)
445 listen(fd, SOMAXCONN);
446
447 my_xprt = (SVCXPRT *)svc_tli_create(fd, nconf, &taddr,
448 RPC_MAXDATASIZE, RPC_MAXDATASIZE);
449 if (my_xprt == NULL) {
450 syslog(LOG_ERR, "%s: could not create service",
451 nconf->nc_netid);
452 goto error;
453 }
454 }
455 if (!bound)
456 return 1;
457 } else {
458 oldmask = umask(S_IXUSR|S_IXGRP|S_IXOTH);
459 if (bind(fd, sa, addrlen) < 0) {
460 syslog(LOG_ERR, "cannot bind %s: %m", nconf->nc_netid);
461 if (res != NULL)
462 freeaddrinfo(res);
463 return 1;
464 }
465 umask(oldmask);
466
467 /* Copy the address */
468 taddr.addr.len = taddr.addr.maxlen = addrlen;
469 taddr.addr.buf = malloc(addrlen);
470 if (taddr.addr.buf == NULL) {
471 syslog(LOG_ERR, "cannot allocate memory for %s address",
472 nconf->nc_netid);
473 if (res != NULL)
474 freeaddrinfo(res);
475 return 1;
476 }
477 memcpy(taddr.addr.buf, sa, addrlen);
478 #ifdef ND_DEBUG
479 if (debugging) {
480 /* for debugging print out our universal address */
481 char *uaddr;
482 struct netbuf nb;
483
484 nb.buf = sa;
485 nb.len = nb.maxlen = sa->sa_len;
486 uaddr = taddr2uaddr(nconf, &nb);
487 fprintf(stderr, "rpcbind : my address is %s\n", uaddr);
488 free(uaddr);
489 }
490 #endif
491
492 if (nconf->nc_semantics != NC_TPI_CLTS)
493 listen(fd, SOMAXCONN);
494
495 my_xprt = (SVCXPRT *)svc_tli_create(fd, nconf, &taddr,
496 RPC_MAXDATASIZE, RPC_MAXDATASIZE);
497 if (my_xprt == NULL) {
498 syslog(LOG_ERR, "%s: could not create service",
499 nconf->nc_netid);
500 goto error;
501 }
502 }
503
504 #ifdef PORTMAP
505 /*
506 * Register both the versions for tcp/ip, udp/ip and local.
507 */
508 if ((strcmp(nconf->nc_protofmly, NC_INET) == 0 &&
509 (strcmp(nconf->nc_proto, NC_TCP) == 0 ||
510 strcmp(nconf->nc_proto, NC_UDP) == 0)) ||
511 (strcmp(nconf->nc_netid, "unix") == 0) ||
512 (strcmp(nconf->nc_netid, "local") == 0)) {
513 struct pmaplist *pml;
514
515 if (!svc_register(my_xprt, PMAPPROG, PMAPVERS,
516 pmap_service, 0)) {
517 syslog(LOG_ERR, "could not register on %s",
518 nconf->nc_netid);
519 goto error;
520 }
521 pml = malloc(sizeof (struct pmaplist));
522 if (pml == NULL) {
523 syslog(LOG_ERR, "no memory!");
524 exit(1);
525 }
526 pml->pml_map.pm_prog = PMAPPROG;
527 pml->pml_map.pm_vers = PMAPVERS;
528 pml->pml_map.pm_port = PMAPPORT;
529 if (strcmp(nconf->nc_proto, NC_TCP) == 0) {
530 if (tcptrans[0]) {
531 syslog(LOG_ERR,
532 "cannot have more than one TCP transport");
533 goto error;
534 }
535 tcptrans = strdup(nconf->nc_netid);
536 pml->pml_map.pm_prot = IPPROTO_TCP;
537
538 /* Let's snarf the universal address */
539 /* "h1.h2.h3.h4.p1.p2" */
540 tcp_uaddr = taddr2uaddr(nconf, &taddr.addr);
541 } else if (strcmp(nconf->nc_proto, NC_UDP) == 0) {
542 if (udptrans[0]) {
543 syslog(LOG_ERR,
544 "cannot have more than one UDP transport");
545 goto error;
546 }
547 udptrans = strdup(nconf->nc_netid);
548 pml->pml_map.pm_prot = IPPROTO_UDP;
549
550 /* Let's snarf the universal address */
551 /* "h1.h2.h3.h4.p1.p2" */
552 udp_uaddr = taddr2uaddr(nconf, &taddr.addr);
553 } else if (strcmp(nconf->nc_netid, "local") == 0)
554 pml->pml_map.pm_prot = IPPROTO_ST;
555 else if (strcmp(nconf->nc_netid, "unix") == 0)
556 pml->pml_map.pm_prot = IPPROTO_ST;
557 pml->pml_next = list_pml;
558 list_pml = pml;
559
560 /* Add version 3 information */
561 pml = malloc(sizeof (struct pmaplist));
562 if (pml == NULL) {
563 syslog(LOG_ERR, "no memory!");
564 exit(1);
565 }
566 pml->pml_map = list_pml->pml_map;
567 pml->pml_map.pm_vers = RPCBVERS;
568 pml->pml_next = list_pml;
569 list_pml = pml;
570
571 /* Add version 4 information */
572 pml = malloc (sizeof (struct pmaplist));
573 if (pml == NULL) {
574 syslog(LOG_ERR, "no memory!");
575 exit(1);
576 }
577 pml->pml_map = list_pml->pml_map;
578 pml->pml_map.pm_vers = RPCBVERS4;
579 pml->pml_next = list_pml;
580 list_pml = pml;
581
582 /* Also add version 2 stuff to rpcbind list */
583 rbllist_add(PMAPPROG, PMAPVERS, nconf, &taddr.addr);
584 }
585 #endif
586
587 /* version 3 registration */
588 if (!svc_reg(my_xprt, RPCBPROG, RPCBVERS, rpcb_service_3, NULL)) {
589 syslog(LOG_ERR, "could not register %s version 3",
590 nconf->nc_netid);
591 goto error;
592 }
593 rbllist_add(RPCBPROG, RPCBVERS, nconf, &taddr.addr);
594
595 /* version 4 registration */
596 if (!svc_reg(my_xprt, RPCBPROG, RPCBVERS4, rpcb_service_4, NULL)) {
597 syslog(LOG_ERR, "could not register %s version 4",
598 nconf->nc_netid);
599 goto error;
600 }
601 rbllist_add(RPCBPROG, RPCBVERS4, nconf, &taddr.addr);
602
603 /* decide if bound checking works for this transport */
604 status = add_bndlist(nconf, &taddr.addr);
605 #ifdef BIND_DEBUG
606 if (debugging) {
607 if (status < 0) {
608 fprintf(stderr, "Error in finding bind status for %s\n",
609 nconf->nc_netid);
610 } else if (status == 0) {
611 fprintf(stderr, "check binding for %s\n",
612 nconf->nc_netid);
613 } else if (status > 0) {
614 fprintf(stderr, "No check binding for %s\n",
615 nconf->nc_netid);
616 }
617 }
618 #endif
619 /*
620 * rmtcall only supported on CLTS transports for now.
621 */
622 if (nconf->nc_semantics == NC_TPI_CLTS) {
623 status = create_rmtcall_fd(nconf);
624
625 #ifdef BIND_DEBUG
626 if (debugging) {
627 if (status < 0) {
628 fprintf(stderr,
629 "Could not create rmtcall fd for %s\n",
630 nconf->nc_netid);
631 } else {
632 fprintf(stderr, "rmtcall fd for %s is %d\n",
633 nconf->nc_netid, status);
634 }
635 }
636 #endif
637 }
638 return (0);
639 error:
640 close(fd);
641 return (1);
642 }
643
644 static void
rbllist_add(rpcprog_t prog,rpcvers_t vers,struct netconfig * nconf,struct netbuf * addr)645 rbllist_add(rpcprog_t prog, rpcvers_t vers, struct netconfig *nconf,
646 struct netbuf *addr)
647 {
648 rpcblist_ptr rbl;
649
650 rbl = malloc(sizeof (rpcblist));
651 if (rbl == NULL) {
652 syslog(LOG_ERR, "no memory!");
653 exit(1);
654 }
655
656 rbl->rpcb_map.r_prog = prog;
657 rbl->rpcb_map.r_vers = vers;
658 rbl->rpcb_map.r_netid = strdup(nconf->nc_netid);
659 rbl->rpcb_map.r_addr = taddr2uaddr(nconf, addr);
660 rbl->rpcb_map.r_owner = strdup(superuser);
661 rbl->rpcb_next = list_rbl; /* Attach to global list */
662 list_rbl = rbl;
663 }
664
665 /*
666 * Catch the signal and die
667 */
668 static void
terminate(int dummy __unused)669 terminate(int dummy __unused)
670 {
671 close(rpcbindlockfd);
672 #ifdef WARMSTART
673 syslog(LOG_ERR,
674 "rpcbind terminating on signal. Restart with \"rpcbind -w\"");
675 write_warmstart(); /* Dump yourself */
676 #endif
677 exit(2);
678 }
679
680 void
rpcbind_abort(void)681 rpcbind_abort(void)
682 {
683 #ifdef WARMSTART
684 write_warmstart(); /* Dump yourself */
685 #endif
686 abort();
687 }
688
689 /* get command line options */
690 static void
parseargs(int argc,char * argv[])691 parseargs(int argc, char *argv[])
692 {
693 int c;
694
695 #ifdef WARMSTART
696 #define WSOP "w"
697 #else
698 #define WSOP ""
699 #endif
700 while ((c = getopt(argc, argv, "6adh:iLls" WSOP)) != -1) {
701 switch (c) {
702 case '6':
703 ipv6_only = 1;
704 break;
705 case 'a':
706 doabort = 1; /* when debugging, do an abort on */
707 break; /* errors; for rpcbind developers */
708 /* only! */
709 case 'd':
710 debugging = 1;
711 break;
712 case 'h':
713 ++nhosts;
714 hosts = realloc(hosts, nhosts * sizeof(char *));
715 if (hosts == NULL)
716 errx(1, "Out of memory");
717 hosts[nhosts - 1] = strdup(optarg);
718 if (hosts[nhosts - 1] == NULL)
719 errx(1, "Out of memory");
720 break;
721 case 'i':
722 insecure = 1;
723 break;
724 case 'L':
725 oldstyle_local = 1;
726 break;
727 case 'l':
728 verboselog = 1;
729 break;
730 case 's':
731 runasdaemon = 1;
732 break;
733 #ifdef WARMSTART
734 case 'w':
735 warmstart = 1;
736 break;
737 #endif
738 default: /* error */
739 fprintf(stderr,
740 "usage: rpcbind [-6adiLls%s] [-h bindip]\n",
741 WSOP);
742 exit (1);
743 }
744 }
745 if (doabort && !debugging) {
746 fprintf(stderr,
747 "-a (abort) specified without -d (debugging) -- ignored.\n");
748 doabort = 0;
749 }
750 #undef WSOP
751 }
752
753 void
reap(int dummy __unused)754 reap(int dummy __unused)
755 {
756 int save_errno = errno;
757
758 while (wait3(NULL, WNOHANG, NULL) > 0)
759 ;
760 errno = save_errno;
761 }
762
763 void
toggle_verboselog(int dummy __unused)764 toggle_verboselog(int dummy __unused)
765 {
766 verboselog = !verboselog;
767 }
768