2 * Copyright (c) 1995, 1996
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
32 * $FreeBSD: src/usr.sbin/rpc.yppasswdd/yppasswdd_main.c,v 1.27 2008/10/30 01:54:31 rafan Exp $
35 #include <sys/param.h>
36 #include <sys/ioctl.h>
38 #include <sys/socket.h>
40 #include <sys/resource.h>
41 #include <netinet/in.h>
49 #include <stdlib.h> /* getenv, exit */
50 #include <string.h> /* strcmp */
55 #include <rpc/rpc_com.h>
56 #include <rpc/pmap_clnt.h> /* for pmap_unset */
57 #include <rpcsvc/yp.h>
58 #include <rpcsvc/ypclnt.h>
61 #include "yppasswdd_extern.h"
62 #include "yppasswd_private.h"
63 #include "ypxfr_extern.h"
64 #include "yp_extern.h"
67 #define SIG_PF void(*)(int)
74 #define _RPCSVC_CLOSEDOWN 120
75 int _rpcpmstart = 0; /* Started by a port monitor ? */
76 static int _rpcfdtype;
77 /* Whether Stream or Datagram ? */
78 /* States a server can be in wrt request */
84 static char _localhost[] = "localhost";
85 static char _passwd_byname[] = "passwd.byname";
86 extern int _rpcsvcstate; /* Set when a request is serviced */
87 static char _progname[] = "rpc.yppasswdd";
88 char *progname = _progname;
89 static char _yp_dir[] = _PATH_YP;
90 const char *yp_dir = _yp_dir;
91 static char _passfile_default[] = _PATH_YP "master.passwd";
92 char *passfile_default = _passfile_default;
94 char *yppasswd_domain = NULL;
97 int allow_additions = 0;
102 char sockname[] = YP_SOCKNAME;
105 terminate(int sig __unused)
107 rpcb_unset(YPPASSWDPROG, YPPASSWDVERS, NULL);
108 rpcb_unset(MASTER_YPPASSWDPROG, MASTER_YPPASSWDVERS, NULL);
114 reload(int sig __unused)
120 closedown(int sig __unused)
122 if (_rpcsvcstate == _IDLE) {
123 extern fd_set svc_fdset;
127 if (_rpcfdtype == SOCK_DGRAM) {
132 size = getdtablesize();
134 for (i = 0, openfd = 0; i < size && openfd < 2; i++)
135 if (FD_ISSET(i, &svc_fdset))
142 if (_rpcsvcstate == _SERVED)
143 _rpcsvcstate = _IDLE;
145 signal(SIGALRM, (SIG_PF) closedown);
146 alarm(_RPCSVC_CLOSEDOWN/2);
152 fprintf(stderr, "%s\n%s\n",
153 "usage: rpc.yppasswdd [-t master.passwd file] [-d domain] [-p path] [-s]",
154 " [-f] [-m] [-i] [-a] [-v] [-u] [-h]");
159 main(int argc, char *argv[])
162 SVCXPRT *transp = NULL;
163 struct sockaddr_in saddr;
164 socklen_t asize = sizeof (saddr);
165 struct netconfig *nconf;
170 char myname[MAXHOSTNAMELEN + 2];
171 int maxrec = RPC_MAXDATASIZE;
177 while ((ch = getopt(argc, argv, "t:d:p:sfamuivh")) != -1) {
180 passfile_default = optarg;
183 yppasswd_domain = optarg;
216 if (yppasswd_domain == NULL) {
217 if (yp_get_default_domain(&yppasswd_domain)) {
218 yp_error("no domain specified and system domain \
219 name isn't set -- aborting");
226 if (getrpcport(_localhost, YPPROG, YPVERS, IPPROTO_UDP) <= 0) {
227 yp_error("no ypserv processes registered with local portmap");
228 yp_error("this host is not an NIS server -- aborting");
232 if ((mastername = ypxfr_get_master(yppasswd_domain,
233 _passwd_byname, _localhost, 0)) == NULL) {
234 yp_error("can't get name of NIS master server for domain %s",
239 if (gethostname((char *)&myname, sizeof(myname)) == -1) {
240 yp_error("can't get local hostname: %s", strerror(errno));
244 if (strncasecmp(mastername, (char *)&myname, sizeof(myname))) {
245 yp_error("master of %s is %s, but we are %s",
246 "passwd.byname", mastername, myname);
247 yp_error("this host is not the NIS master server for \
248 the %s domain -- aborting", yppasswd_domain);
254 if (getsockname(0, (struct sockaddr *)&saddr, &asize) == 0) {
255 socklen_t ssize = sizeof (int);
256 if (saddr.sin_family != AF_INET)
258 if (getsockopt(0, SOL_SOCKET, SO_TYPE,
259 (char *)&_rpcfdtype, &ssize) == -1)
264 if (!debug && _rpcpmstart == 0) {
266 err(1,"cannot fork");
269 openlog("rpc.yppasswdd", LOG_PID, LOG_DAEMON);
270 memset(&sa, 0, sizeof(sa));
271 sa.sa_flags = SA_NOCLDWAIT;
272 sigaction(SIGCHLD, &sa, NULL);
274 rpcb_unset(YPPASSWDPROG, YPPASSWDVERS, NULL);
275 rpcb_unset(MASTER_YPPASSWDPROG, MASTER_YPPASSWDVERS, NULL);
277 rpc_control(RPC_SVC_CONNMAXREC_SET, &maxrec);
279 if (svc_create(yppasswdprog_1, YPPASSWDPROG, YPPASSWDVERS, "netpath") == 0) {
280 yp_error("cannot create yppasswd service.");
283 if (svc_create(master_yppasswdprog_1, MASTER_YPPASSWDPROG,
284 MASTER_YPPASSWDVERS, "netpath") == 0) {
285 yp_error("cannot create master_yppasswd service.");
290 localhandle = setnetconfig();
291 while ((nconf = getnetconfig(localhandle)) != NULL) {
292 if (nconf->nc_protofmly != NULL &&
293 strcmp(nconf->nc_protofmly, NC_LOOPBACK) == 0)
297 yp_error("getnetconfigent unix: %s", nc_sperror());
301 transp = svcunix_create(RPC_ANYSOCK, 0, 0, sockname);
302 if (transp == NULL) {
303 yp_error("cannot create AF_LOCAL service.");
306 if (!svc_reg(transp, MASTER_YPPASSWDPROG, MASTER_YPPASSWDVERS,
307 master_yppasswdprog_1, nconf)) {
308 yp_error("unable to register (MASTER_YPPASSWDPROG, \
309 MASTER_YPPASSWDVERS, unix).");
312 endnetconfig(localhandle);
314 /* Only root may connect() to the AF_UNIX link. */
315 if (chmod(sockname, 0))
316 err(1, "chmod of %s failed", sockname);
318 if (transp == NULL) {
319 yp_error("could not create a handle");
323 signal(SIGALRM, (SIG_PF) closedown);
324 alarm(_RPCSVC_CLOSEDOWN/2);
327 /* Unlimited resource limits. */
328 rlim.rlim_cur = rlim.rlim_max = RLIM_INFINITY;
329 setrlimit(RLIMIT_CPU, &rlim);
330 setrlimit(RLIMIT_FSIZE, &rlim);
331 setrlimit(RLIMIT_STACK, &rlim);
332 setrlimit(RLIMIT_DATA, &rlim);
333 setrlimit(RLIMIT_RSS, &rlim);
335 /* Don't drop core (not really necessary, but GP's). */
336 rlim.rlim_cur = rlim.rlim_max = 0;
337 setrlimit(RLIMIT_CORE, &rlim);
339 /* Turn off signals. */
340 signal(SIGALRM, SIG_IGN);
341 signal(SIGHUP, (SIG_PF) reload);
342 signal(SIGINT, SIG_IGN);
343 signal(SIGPIPE, SIG_IGN);
344 signal(SIGQUIT, SIG_IGN);
345 signal(SIGTERM, (SIG_PF) terminate);
348 yp_error("svc_run returned");