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 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 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