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[FreeBSD/releng/9.2.git] / libexec / rpc.rstatd / rstatd.c
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. All advertising materials mentioning features or use of this software
14  *    must display the following acknowledgement:
15  *      This product includes software developed by the University of
16  *      California, Berkeley and its contributors.
17  * 4. Neither the name of the University nor the names of its contributors
18  *    may be used to endorse or promote products derived from this software
19  *    without specific prior written permission.
20  *
21  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31  * SUCH DAMAGE.
32  */
33
34 #ifndef lint
35 static const char rcsid[] =
36   "$FreeBSD$";
37 #endif /* not lint */
38
39 #include <stdlib.h>
40 #include <rpc/rpc.h>
41 #include <signal.h>
42 #include <syslog.h>
43 #include <rpcsvc/rstat.h>
44
45 extern void rstat_service(struct svc_req *, SVCXPRT *);
46
47 int from_inetd = 1;     /* started from inetd ? */
48 int closedown = 20;     /* how long to wait before going dormant */
49
50 void
51 cleanup(int sig __unused)
52 {
53         (void) rpcb_unset(RSTATPROG, RSTATVERS_TIME, NULL);
54         (void) rpcb_unset(RSTATPROG, RSTATVERS_SWTCH, NULL);
55         (void) rpcb_unset(RSTATPROG, RSTATVERS_ORIG, NULL);
56         exit(0);
57 }
58
59 int
60 main(int argc, char *argv[])
61 {
62         SVCXPRT *transp;
63         int ok;
64         struct sockaddr_storage from;
65         socklen_t fromlen;
66
67         if (argc == 2)
68                 closedown = atoi(argv[1]);
69         if (closedown <= 0)
70                 closedown = 20;
71
72         /*
73          * See if inetd started us
74          */
75         fromlen = sizeof(from);
76         if (getsockname(0, (struct sockaddr *)&from, &fromlen) < 0) {
77                 from_inetd = 0;
78         }
79
80         if (!from_inetd) {
81                 daemon(0, 0);
82
83                 (void)rpcb_unset(RSTATPROG, RSTATVERS_TIME, NULL);
84                 (void)rpcb_unset(RSTATPROG, RSTATVERS_SWTCH, NULL);
85                 (void)rpcb_unset(RSTATPROG, RSTATVERS_ORIG, NULL);
86
87                 (void) signal(SIGINT, cleanup);
88                 (void) signal(SIGTERM, cleanup);
89                 (void) signal(SIGHUP, cleanup);
90         }
91
92         openlog("rpc.rstatd", LOG_CONS|LOG_PID, LOG_DAEMON);
93
94         if (from_inetd) {
95                 transp = svc_tli_create(0, NULL, NULL, 0, 0);
96                 if (transp == NULL) {
97                         syslog(LOG_ERR, "cannot create udp service.");
98                         exit(1);
99                 }
100                 ok = svc_reg(transp, RSTATPROG, RSTATVERS_TIME,
101                              rstat_service, NULL);
102         } else
103                 ok = svc_create(rstat_service,
104                                 RSTATPROG, RSTATVERS_TIME, "udp");
105         if (!ok) {
106                 syslog(LOG_ERR, "unable to register (RSTATPROG, RSTATVERS_TIME, %s)", (!from_inetd)?"udp":"(inetd)");
107                 exit(1);
108         }
109         if (from_inetd)
110                 ok = svc_reg(transp, RSTATPROG, RSTATVERS_SWTCH,
111                              rstat_service, NULL);
112         else
113                 ok = svc_create(rstat_service,
114                                 RSTATPROG, RSTATVERS_SWTCH, "udp");
115         if (!ok) {
116                 syslog(LOG_ERR, "unable to register (RSTATPROG, RSTATVERS_SWTCH, %s)", (!from_inetd)?"udp":"(inetd)");
117                 exit(1);
118         }
119         if (from_inetd)
120                 ok = svc_reg(transp, RSTATPROG, RSTATVERS_ORIG,
121                              rstat_service, NULL);
122         else
123                 ok = svc_create(rstat_service,
124                                 RSTATPROG, RSTATVERS_ORIG, "udp");
125         if (!ok) {
126                 syslog(LOG_ERR, "unable to register (RSTATPROG, RSTATVERS_ORIG, %s)", (!from_inetd)?"udp":"(inetd)");
127                 exit(1);
128         }
129
130         svc_run();
131         syslog(LOG_ERR, "svc_run returned");
132         exit(1);
133 }