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 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 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