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1 /*-
2  * Copyright (c) 1993, John Brezak
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
7  * are met:
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. Neither the name of the University nor the names of its contributors
14  *    may be used to endorse or promote products derived from this software
15  *    without specific prior written permission.
16  *
17  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
18  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
21  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27  * SUCH DAMAGE.
28  */
29
30 #ifndef lint
31 static const char rcsid[] =
32   "$FreeBSD$";
33 #endif /* not lint */
34
35 #include <stdlib.h>
36 #include <rpc/rpc.h>
37 #include <signal.h>
38 #include <syslog.h>
39 #include <rpcsvc/rstat.h>
40
41 extern void rstat_service(struct svc_req *, SVCXPRT *);
42
43 int from_inetd = 1;     /* started from inetd ? */
44 int closedown = 20;     /* how long to wait before going dormant */
45
46 void
47 cleanup(int sig __unused)
48 {
49         (void) rpcb_unset(RSTATPROG, RSTATVERS_TIME, NULL);
50         (void) rpcb_unset(RSTATPROG, RSTATVERS_SWTCH, NULL);
51         (void) rpcb_unset(RSTATPROG, RSTATVERS_ORIG, NULL);
52         exit(0);
53 }
54
55 int
56 main(int argc, char *argv[])
57 {
58         SVCXPRT *transp;
59         int ok;
60         struct sockaddr_storage from;
61         socklen_t fromlen;
62
63         if (argc == 2)
64                 closedown = atoi(argv[1]);
65         if (closedown <= 0)
66                 closedown = 20;
67
68         /*
69          * See if inetd started us
70          */
71         fromlen = sizeof(from);
72         if (getsockname(0, (struct sockaddr *)&from, &fromlen) < 0) {
73                 from_inetd = 0;
74         }
75
76         if (!from_inetd) {
77                 daemon(0, 0);
78
79                 (void)rpcb_unset(RSTATPROG, RSTATVERS_TIME, NULL);
80                 (void)rpcb_unset(RSTATPROG, RSTATVERS_SWTCH, NULL);
81                 (void)rpcb_unset(RSTATPROG, RSTATVERS_ORIG, NULL);
82
83                 (void) signal(SIGINT, cleanup);
84                 (void) signal(SIGTERM, cleanup);
85                 (void) signal(SIGHUP, cleanup);
86         }
87
88         openlog("rpc.rstatd", LOG_CONS|LOG_PID, LOG_DAEMON);
89
90         if (from_inetd) {
91                 transp = svc_tli_create(0, NULL, NULL, 0, 0);
92                 if (transp == NULL) {
93                         syslog(LOG_ERR, "cannot create udp service.");
94                         exit(1);
95                 }
96                 ok = svc_reg(transp, RSTATPROG, RSTATVERS_TIME,
97                              rstat_service, NULL);
98         } else
99                 ok = svc_create(rstat_service,
100                                 RSTATPROG, RSTATVERS_TIME, "udp");
101         if (!ok) {
102                 syslog(LOG_ERR, "unable to register (RSTATPROG, RSTATVERS_TIME, %s)", (!from_inetd)?"udp":"(inetd)");
103                 exit(1);
104         }
105         if (from_inetd)
106                 ok = svc_reg(transp, RSTATPROG, RSTATVERS_SWTCH,
107                              rstat_service, NULL);
108         else
109                 ok = svc_create(rstat_service,
110                                 RSTATPROG, RSTATVERS_SWTCH, "udp");
111         if (!ok) {
112                 syslog(LOG_ERR, "unable to register (RSTATPROG, RSTATVERS_SWTCH, %s)", (!from_inetd)?"udp":"(inetd)");
113                 exit(1);
114         }
115         if (from_inetd)
116                 ok = svc_reg(transp, RSTATPROG, RSTATVERS_ORIG,
117                              rstat_service, NULL);
118         else
119                 ok = svc_create(rstat_service,
120                                 RSTATPROG, RSTATVERS_ORIG, "udp");
121         if (!ok) {
122                 syslog(LOG_ERR, "unable to register (RSTATPROG, RSTATVERS_ORIG, %s)", (!from_inetd)?"udp":"(inetd)");
123                 exit(1);
124         }
125
126         svc_run();
127         syslog(LOG_ERR, "svc_run returned");
128         exit(1);
129 }