3 * Bill Paul <wpaul@ctr.columbia.edu>. All rights reserved.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. All advertising materials mentioning features or use of this software
14 * must display the following acknowledgement:
15 * This product includes software developed by Bill Paul.
16 * 4. Neither the name of the author nor the names of any co-contributors
17 * may be used to endorse or promote products derived from this software
18 * without specific prior written permission.
20 * THIS SOFTWARE IS PROVIDED BY Bill Paul AND CONTRIBUTORS ``AS IS'' AND
21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED. IN NO EVENT SHALL Bill Paul OR CONTRIBUTORS BE LIABLE
24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33 #include <sys/cdefs.h>
34 __FBSDID("$FreeBSD$");
37 * ypserv startup function.
38 * We need out own main() since we have to do some additional work
39 * that rpcgen won't do for us. Most of this file was generated using
40 * rpcgen.new, and later modified.
43 #include <sys/types.h>
45 #include <sys/queue.h>
46 #include <sys/socket.h>
55 #include <stdlib.h> /* getenv, exit */
56 #include <string.h> /* strcmp */
60 #include <sysent.h> /* getdtablesize, open */
61 #endif /* __cplusplus */
62 #include <netinet/in.h>
64 #include "yp_extern.h"
65 #include <netconfig.h>
67 #include <rpc/rpc_com.h>
70 #define SIG_PF void(*)(int)
73 #define _RPCSVC_CLOSEDOWN 120
74 int _rpcpmstart; /* Started by a port monitor ? */
75 static int _rpcfdtype;
76 /* Whether Stream or Datagram ? */
80 /* States a server can be in wrt request */
86 extern void ypprog_1(struct svc_req *, SVCXPRT *);
87 extern void ypprog_2(struct svc_req *, SVCXPRT *);
88 extern int _rpc_dtablesize(void);
89 extern int _rpcsvcstate; /* Set when a request is serviced */
90 char *progname = "ypserv";
91 char *yp_dir = _PATH_YP;
98 struct sockaddr_storage sle_ss;
99 SLIST_ENTRY(socklistent) sle_next;
101 static SLIST_HEAD(, socklistent) sle_head =
102 SLIST_HEAD_INITIALIZER(sle_head);
104 struct bindaddrlistent {
105 const char *ble_hostname;
106 SLIST_ENTRY(bindaddrlistent) ble_next;
108 static SLIST_HEAD(, bindaddrlistent) ble_head =
109 SLIST_HEAD_INITIALIZER(ble_head);
111 static char *servname = "0";
114 void _msgout(char* msg, ...)
121 vsyslog(LOG_ERR, msg, ap);
125 vsyslog(LOG_ERR, msg, ap);
138 #endif /* def FD_SETSIZE */
139 int fd_setsize = _rpc_dtablesize();
140 struct timeval timeout;
142 /* Establish the identity of the parent ypserv process. */
150 #endif /* def FD_SETSIZE */
152 FD_SET(resfd, &readfds);
154 timeout.tv_sec = RESOLVER_TIMEOUT;
156 switch (select(fd_setsize, &readfds, NULL, NULL,
159 if (errno == EINTR) {
162 warn("svc_run: - select failed");
165 if (getpid() == yp_pid)
169 if (getpid() == yp_pid) {
170 if (FD_ISSET(resfd, &readfds)) {
172 FD_CLR(resfd, &readfds);
174 svc_getreqset(&readfds);
177 if (yp_pid != getpid())
185 (void)svc_unreg(YPPROG, YPVERS);
186 (void)svc_unreg(YPPROG, YPOLDVERS);
206 if (sig == SIGCHLD) {
207 while (wait3(&status, WNOHANG, NULL) > 0)
220 fprintf(stderr, "usage: ypserv [-h addr] [-d] [-n] [-p path] [-P port]\n");
227 if (_rpcsvcstate == _IDLE) {
228 extern fd_set svc_fdset;
232 if (_rpcfdtype == SOCK_DGRAM) {
237 size = getdtablesize();
239 for (i = 0, openfd = 0; i < size && openfd < 2; i++)
240 if (FD_ISSET(i, &svc_fdset))
247 if (_rpcsvcstate == _SERVED)
248 _rpcsvcstate = _IDLE;
250 (void) signal(SIGALRM, (SIG_PF) closedown);
251 (void) alarm(_RPCSVC_CLOSEDOWN/2);
255 create_service(const int sock, const struct netconfig *nconf,
256 const struct __rpc_sockinfo *si)
261 struct addrinfo hints, *res, *res0;
262 struct socklistent *slep;
263 struct bindaddrlistent *blep;
264 struct netbuf svcaddr;
266 SLIST_INIT(&sle_head);
267 memset(&hints, 0, sizeof(hints));
268 memset(&svcaddr, 0, sizeof(svcaddr));
270 hints.ai_family = si->si_af;
271 hints.ai_socktype = si->si_socktype;
272 hints.ai_protocol = si->si_proto;
275 * Build socketlist from bindaddrlist.
277 if (sock == RPC_ANYFD) {
278 SLIST_FOREACH(blep, &ble_head, ble_next) {
279 if (blep->ble_hostname == NULL)
280 hints.ai_flags = AI_PASSIVE;
283 error = getaddrinfo(blep->ble_hostname, servname,
286 _msgout("getaddrinfo(): %s",
287 gai_strerror(error));
290 for (res = res0; res; res = res->ai_next) {
293 s = __rpc_nconf2fd(nconf);
295 if (errno == EPROTONOSUPPORT)
296 _msgout("unsupported"
300 _msgout("cannot create"
307 if (bindresvport_sa(s, res->ai_addr) == -1) {
308 if ((errno != EPERM) ||
309 (bind(s, res->ai_addr,
310 res->ai_addrlen) == -1)) {
311 _msgout("cannot bind "
320 if (nconf->nc_semantics != NC_TPI_CLTS)
321 listen(s, SOMAXCONN);
323 slep = malloc(sizeof(*slep));
325 _msgout("malloc failed: %s",
331 memset(slep, 0, sizeof(*slep));
332 memcpy(&slep->sle_ss,
333 (struct sockaddr *)(res->ai_addr),
334 sizeof(res->ai_addr));
336 SLIST_INSERT_HEAD(&sle_head, slep, sle_next);
339 * If servname == "0", redefine it by using
342 if (strncmp("0", servname, 1) == 0) {
343 struct sockaddr *sap;
347 sname = malloc(NI_MAXSERV);
349 _msgout("malloc(): %s",
355 memset(sname, 0, NI_MAXSERV);
357 sap = (struct sockaddr *)&slep->sle_ss;
359 error = getsockname(s, sap, &slen);
361 _msgout("getsockname(): %s",
368 error = getnameinfo(sap, slen,
371 NI_NUMERICHOST | NI_NUMERICSERV);
373 _msgout("getnameinfo(): %s",
386 slep = malloc(sizeof(*slep));
388 _msgout("malloc failed: %s", strerror(errno));
391 memset(slep, 0, sizeof(*slep));
392 slep->sle_sock = sock;
393 SLIST_INSERT_HEAD(&sle_head, slep, sle_next);
397 * Traverse socketlist and create rpc service handles for each socket.
399 SLIST_FOREACH(slep, &sle_head, sle_next) {
400 if (nconf->nc_semantics == NC_TPI_CLTS)
401 transp = svc_dg_create(slep->sle_sock, 0, 0);
403 transp = svc_vc_create(slep->sle_sock, RPC_MAXDATASIZE,
405 if (transp == NULL) {
406 _msgout("unable to create service: %s",
410 if (!svc_reg(transp, YPPROG, YPOLDVERS, ypprog_1, NULL)) {
412 close(slep->sle_sock);
413 _msgout("unable to register (YPPROG, YPOLDVERS, %s):"
414 " %s", nconf->nc_netid, strerror(errno));
417 if (!svc_reg(transp, YPPROG, YPVERS, ypprog_2, NULL)) {
419 close(slep->sle_sock);
420 _msgout("unable to register (YPPROG, YPVERS, %s): %s",
421 nconf->nc_netid, strerror(errno));
425 while(!(SLIST_EMPTY(&sle_head)))
426 SLIST_REMOVE_HEAD(&sle_head, sle_next);
429 * Register RPC service to rpcbind by using AI_PASSIVE address.
431 hints.ai_flags = AI_PASSIVE;
432 error = getaddrinfo(NULL, servname, &hints, &res0);
434 _msgout("getaddrinfo(): %s", gai_strerror(error));
437 svcaddr.buf = res0->ai_addr;
438 svcaddr.len = res0->ai_addrlen;
440 if (si->si_af == AF_INET) {
441 /* XXX: ignore error intentionally */
442 rpcb_set(YPPROG, YPOLDVERS, nconf, &svcaddr);
444 /* XXX: ignore error intentionally */
445 rpcb_set(YPPROG, YPVERS, nconf, &svcaddr);
451 main(int argc, char *argv[])
458 struct netconfig *nconf;
459 struct __rpc_sockinfo si;
460 struct bindaddrlistent *blep;
462 memset(&si, 0, sizeof(si));
463 SLIST_INIT(&ble_head);
465 while ((ch = getopt(argc, argv, "dh:np:P:")) != -1) {
468 debug = ypdb_debug = 1;
471 blep = malloc(sizeof(*blep));
473 err(1, "malloc() failed: -h %s", optarg);
474 blep->ble_hostname = optarg;
475 SLIST_INSERT_HEAD(&ble_head, blep, ble_next);
491 * Add "anyaddr" entry if no -h is specified.
493 if (SLIST_EMPTY(&ble_head)) {
494 blep = malloc(sizeof(*blep));
496 err(1, "malloc() failed");
497 memset(blep, 0, sizeof(*blep));
498 SLIST_INSERT_HEAD(&ble_head, blep, ble_next);
506 nc_handle = setnetconfig();
507 if (nc_handle == NULL)
508 err(1, "cannot read %s", NETCONFIG);
509 if (__rpc_fd2sockinfo(0, &si) != 0) {
510 /* invoked from inetd */
512 _rpcfdtype = si.si_socktype;
515 openlog("ypserv", LOG_PID, LOG_DAEMON);
517 /* standalone mode */
520 err(1,"cannot fork");
522 openlog("ypserv", LOG_PID, LOG_DAEMON);
530 if (madvise(NULL, 0, MADV_PROTECT) != 0)
531 _msgout("madvise(): %s", strerror(errno));
534 * Create RPC service for each transport.
537 while((nconf = getnetconfig(nc_handle))) {
538 if ((nconf->nc_flag & NC_VISIBLE)) {
539 if (__rpc_nconf2sockinfo(nconf, &si) == 0) {
540 _msgout("cannot get information for %s. "
541 "Ignored.", nconf->nc_netid);
545 if (si.si_socktype != _rpcfdtype ||
548 } else if (si.si_af != _rpcaf)
550 error = create_service(_rpcfd, nconf, &si);
552 endnetconfig(nc_handle);
558 endnetconfig(nc_handle);
559 while(!(SLIST_EMPTY(&ble_head)))
560 SLIST_REMOVE_HEAD(&ble_head, ble_next);
562 _msgout("no transport is available. Aborted.");
566 (void) signal(SIGALRM, (SIG_PF) closedown);
567 (void) alarm(_RPCSVC_CLOSEDOWN/2);
570 * Make sure SIGPIPE doesn't blow us away while servicing TCP
573 (void) signal(SIGPIPE, SIG_IGN);
574 (void) signal(SIGCHLD, (SIG_PF) reaper);
575 (void) signal(SIGTERM, (SIG_PF) reaper);
576 (void) signal(SIGINT, (SIG_PF) reaper);
577 (void) signal(SIGHUP, (SIG_PF) reaper);
579 _msgout("svc_run returned");