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 * $FreeBSD: head/libexec/rpc.rusersd/rusersd.c 326025 2017-11-20 19:49:47Z pfg $
32 */
33
34 #include <stdlib.h>
35 #include <rpc/rpc.h>
36 #include <sys/socket.h>
37 #include <signal.h>
38 #include <syslog.h>
39 #include <rpcsvc/rnusers.h>
40
41 #include "extern.h"
42
43 int from_inetd = 1;
44
45 static void __dead2
cleanup(int sig __unused)46 cleanup(int sig __unused)
47 {
48 (void) rpcb_unset(RUSERSPROG, RUSERSVERS_IDLE, NULL);
49 (void) rpcb_unset(RUSERSPROG, RUSERSVERS_ORIG, NULL);
50 exit(0);
51 }
52
53 int
main(int argc __unused,char * argv[]__unused)54 main(int argc __unused, char *argv[] __unused)
55 {
56 SVCXPRT *transp = NULL; /* Keep compiler happy. */
57 int ok;
58 struct sockaddr_storage from;
59 socklen_t fromlen;
60
61 /*
62 * See if inetd started us
63 */
64 fromlen = sizeof(from);
65 if (getsockname(0, (struct sockaddr *)&from, &fromlen) < 0) {
66 from_inetd = 0;
67 }
68
69 if (!from_inetd) {
70 daemon(0, 0);
71
72 (void) rpcb_unset(RUSERSPROG, RUSERSVERS_IDLE, NULL);
73 (void) rpcb_unset(RUSERSPROG, RUSERSVERS_ORIG, NULL);
74
75 (void) signal(SIGINT, cleanup);
76 (void) signal(SIGTERM, cleanup);
77 (void) signal(SIGHUP, cleanup);
78 }
79
80 openlog("rpc.rusersd", LOG_CONS|LOG_PID, LOG_DAEMON);
81
82 if (from_inetd) {
83 transp = svc_tli_create(0, NULL, NULL, 0, 0);
84 if (transp == NULL) {
85 syslog(LOG_ERR, "cannot create udp service.");
86 exit(1);
87 }
88 ok = svc_reg(transp, RUSERSPROG, RUSERSVERS_IDLE,
89 rusers_service, NULL);
90 } else
91 ok = svc_create(rusers_service,
92 RUSERSPROG, RUSERSVERS_IDLE, "udp");
93 if (!ok) {
94 syslog(LOG_ERR, "unable to register (RUSERSPROG, RUSERSVERS_IDLE, %s)", (!from_inetd)?"udp":"(inetd)");
95 exit(1);
96 }
97 if (from_inetd)
98 ok = svc_reg(transp, RUSERSPROG, RUSERSVERS_ORIG,
99 rusers_service, NULL);
100 else
101 ok = svc_create(rusers_service,
102 RUSERSPROG, RUSERSVERS_ORIG, "udp");
103 if (!ok) {
104 syslog(LOG_ERR, "unable to register (RUSERSPROG, RUSERSVERS_ORIG, %s)", (!from_inetd)?"udp":"(inetd)");
105 exit(1);
106 }
107
108 svc_run();
109 syslog(LOG_ERR, "svc_run returned");
110 exit(1);
111 }
112