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 #ifndef lint 33 static const char rcsid[] = 34 "$FreeBSD$"; 35 #endif /* not lint */ 36 37 #include <stdlib.h> 38 #include <rpc/rpc.h> 39 #include <sys/socket.h> 40 #include <signal.h> 41 #include <syslog.h> 42 #include <rpcsvc/rnusers.h> 43 44 #include "extern.h" 45 46 int from_inetd = 1; 47 48 static void 49 cleanup(int sig __unused) 50 { 51 (void) rpcb_unset(RUSERSPROG, RUSERSVERS_IDLE, NULL); 52 (void) rpcb_unset(RUSERSPROG, RUSERSVERS_ORIG, NULL); 53 exit(0); 54 } 55 56 int 57 main(int argc __unused, char *argv[] __unused) 58 { 59 SVCXPRT *transp = NULL; /* Keep compiler happy. */ 60 int ok; 61 struct sockaddr_storage from; 62 socklen_t fromlen; 63 64 /* 65 * See if inetd started us 66 */ 67 fromlen = sizeof(from); 68 if (getsockname(0, (struct sockaddr *)&from, &fromlen) < 0) { 69 from_inetd = 0; 70 } 71 72 if (!from_inetd) { 73 daemon(0, 0); 74 75 (void) rpcb_unset(RUSERSPROG, RUSERSVERS_IDLE, NULL); 76 (void) rpcb_unset(RUSERSPROG, RUSERSVERS_ORIG, NULL); 77 78 (void) signal(SIGINT, cleanup); 79 (void) signal(SIGTERM, cleanup); 80 (void) signal(SIGHUP, cleanup); 81 } 82 83 openlog("rpc.rusersd", LOG_CONS|LOG_PID, LOG_DAEMON); 84 85 if (from_inetd) { 86 transp = svc_tli_create(0, NULL, NULL, 0, 0); 87 if (transp == NULL) { 88 syslog(LOG_ERR, "cannot create udp service."); 89 exit(1); 90 } 91 ok = svc_reg(transp, RUSERSPROG, RUSERSVERS_IDLE, 92 rusers_service, NULL); 93 } else 94 ok = svc_create(rusers_service, 95 RUSERSPROG, RUSERSVERS_IDLE, "udp"); 96 if (!ok) { 97 syslog(LOG_ERR, "unable to register (RUSERSPROG, RUSERSVERS_IDLE, %s)", (!from_inetd)?"udp":"(inetd)"); 98 exit(1); 99 } 100 if (from_inetd) 101 ok = svc_reg(transp, RUSERSPROG, RUSERSVERS_ORIG, 102 rusers_service, NULL); 103 else 104 ok = svc_create(rusers_service, 105 RUSERSPROG, RUSERSVERS_ORIG, "udp"); 106 if (!ok) { 107 syslog(LOG_ERR, "unable to register (RUSERSPROG, RUSERSVERS_ORIG, %s)", (!from_inetd)?"udp":"(inetd)"); 108 exit(1); 109 } 110 111 svc_run(); 112 syslog(LOG_ERR, "svc_run returned"); 113 exit(1); 114 } 115