1 /*-
2 * SPDX-License-Identifier: BSD-3-Clause
3 *
4 * Copyright (c) 1993, John Brezak
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 * 3. Neither the name of the University nor the names of its contributors
16 * may be used to endorse or promote products derived from this software
17 * without specific prior written permission.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 * SUCH DAMAGE.
30 */
31
32 #include <stdlib.h>
33 #include <rpc/rpc.h>
34 #include <sys/socket.h>
35 #include <signal.h>
36 #include <syslog.h>
37 #include <rpcsvc/rnusers.h>
38
39 #include "extern.h"
40
41 int from_inetd = 1;
42
43 static void
cleanup(int sig __unused)44 cleanup(int sig __unused)
45 {
46 (void) rpcb_unset(RUSERSPROG, RUSERSVERS_IDLE, NULL);
47 (void) rpcb_unset(RUSERSPROG, RUSERSVERS_ORIG, NULL);
48 exit(0);
49 }
50
51 int
main(int argc __unused,char * argv[]__unused)52 main(int argc __unused, char *argv[] __unused)
53 {
54 SVCXPRT *transp = NULL; /* Keep compiler happy. */
55 int ok;
56 struct sockaddr_storage from;
57 socklen_t fromlen;
58
59 /*
60 * See if inetd started us
61 */
62 fromlen = sizeof(from);
63 if (getsockname(0, (struct sockaddr *)&from, &fromlen) < 0) {
64 from_inetd = 0;
65 }
66
67 if (!from_inetd) {
68 daemon(0, 0);
69
70 (void) rpcb_unset(RUSERSPROG, RUSERSVERS_IDLE, NULL);
71 (void) rpcb_unset(RUSERSPROG, RUSERSVERS_ORIG, NULL);
72
73 (void) signal(SIGINT, cleanup);
74 (void) signal(SIGTERM, cleanup);
75 (void) signal(SIGHUP, cleanup);
76 }
77
78 openlog("rpc.rusersd", LOG_CONS|LOG_PID, LOG_DAEMON);
79
80 if (from_inetd) {
81 transp = svc_tli_create(0, NULL, NULL, 0, 0);
82 if (transp == NULL) {
83 syslog(LOG_ERR, "cannot create udp service.");
84 exit(1);
85 }
86 ok = svc_reg(transp, RUSERSPROG, RUSERSVERS_IDLE,
87 rusers_service, NULL);
88 } else
89 ok = svc_create(rusers_service,
90 RUSERSPROG, RUSERSVERS_IDLE, "udp");
91 if (!ok) {
92 syslog(LOG_ERR, "unable to register (RUSERSPROG, RUSERSVERS_IDLE, %s)", (!from_inetd)?"udp":"(inetd)");
93 exit(1);
94 }
95 if (from_inetd)
96 ok = svc_reg(transp, RUSERSPROG, RUSERSVERS_ORIG,
97 rusers_service, NULL);
98 else
99 ok = svc_create(rusers_service,
100 RUSERSPROG, RUSERSVERS_ORIG, "udp");
101 if (!ok) {
102 syslog(LOG_ERR, "unable to register (RUSERSPROG, RUSERSVERS_ORIG, %s)", (!from_inetd)?"udp":"(inetd)");
103 exit(1);
104 }
105
106 svc_run();
107 syslog(LOG_ERR, "svc_run returned");
108 exit(1);
109 }
110