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      1 /*	$NetBSD: rusersd.c,v 1.17 2007/12/15 19:44:46 perry Exp $	*/
      2 
      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. The name of the author may not be used to endorse or promote products
     16  *     derived from this software without specific prior written permission.
     17  *
     18  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR `AS IS'' AND ANY EXPRESS OR
     19  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
     20  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
     21  * DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
     22  * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
     23  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
     24  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     25  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
     26  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
     27  * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     28  * POSSIBILITY OF SUCH DAMAGE.
     29  */
     30 
     31 #include <sys/cdefs.h>
     32 #ifndef lint
     33 __RCSID("$NetBSD: rusersd.c,v 1.17 2007/12/15 19:44:46 perry Exp $");
     34 #endif /* not lint */
     35 
     36 #include <stdio.h>
     37 #include <rpc/rpc.h>
     38 #include <sys/socket.h>
     39 #include <signal.h>
     40 #include <syslog.h>
     41 #include <stdlib.h>
     42 #include <rpcsvc/rusers.h>	/* New version */
     43 #include <rpcsvc/rnusers.h>	/* Old version */
     44 
     45 #include "rusers_proc.h"
     46 
     47 
     48 int from_inetd = 1;
     49 
     50 static void cleanup(int) __dead;
     51 
     52 static void
     53 /*ARGSUSED*/
     54 cleanup(int n)
     55 {
     56 
     57 	(void) rpcb_unset(RUSERSPROG, RUSERSVERS_3, NULL);
     58 	(void) rpcb_unset(RUSERSPROG, RUSERSVERS_IDLE, NULL);
     59 	exit(0);
     60 }
     61 
     62 int
     63 /*ARGSUSED*/
     64 main(int argc, char *argv[])
     65 {
     66 	SVCXPRT *transp;
     67 	struct sockaddr_storage from;
     68 	socklen_t fromlen;
     69 
     70 	/*
     71 	 * See if inetd started us
     72 	 */
     73 	fromlen = sizeof(from);
     74 	if (getsockname(0, (struct sockaddr *)(void *)&from, &fromlen) == -1)
     75 		from_inetd = 0;
     76 
     77 	if (!from_inetd) {
     78 		(void)daemon(0, 0);
     79 
     80 		(void)rpcb_unset(RUSERSPROG, RUSERSVERS_3, NULL);
     81 		(void)rpcb_unset(RUSERSPROG, RUSERSVERS_IDLE, NULL);
     82 
     83 		(void)signal(SIGINT, cleanup);
     84 		(void)signal(SIGTERM, cleanup);
     85 		(void)signal(SIGHUP, cleanup);
     86 	}
     87 
     88 	openlog("rpc.rusersd", LOG_PID, LOG_DAEMON);
     89 
     90 	if (from_inetd) {
     91 		transp = svc_dg_create(0, 0, 0);
     92 		if (transp == NULL) {
     93 			syslog(LOG_ERR, "cannot create udp service.");
     94 			return 1;
     95 		}
     96 		if (!svc_reg(transp, RUSERSPROG, RUSERSVERS_3, rusers_service,
     97 		    NULL)) {
     98 			syslog(LOG_ERR, "unable to register "
     99 			    "(RUSERSPROG, RUSERSVERS_3).");
    100 			return 1;
    101 		}
    102 		if (!svc_reg(transp, RUSERSPROG, RUSERSVERS_IDLE,
    103 		    rusers_service, NULL)) {
    104 			syslog(LOG_ERR, "unable to register "
    105 			    "(RUSERSPROG, RUSERSVERS_IDLE).");
    106 			return 1;
    107 		}
    108 	} else {
    109 		if (!svc_create(rusers_service, RUSERSPROG, RUSERSVERS_3,
    110 		    "udp")) {
    111 			syslog(LOG_ERR, "unable to create "
    112 			    "(RUSERSPROG, RUSERSVERS_3).");
    113 			return 1;
    114 		}
    115 		if (!svc_create(rusers_service, RUSERSPROG, RUSERSVERS_IDLE,
    116 		    "udp")) {
    117 			syslog(LOG_ERR, "unable to create "
    118 			    "(RUSERSPROG, RUSERSVERS_IDLE).");
    119 			return 1;
    120 		}
    121 	}
    122 
    123 	svc_run();
    124 	syslog(LOG_ERR, "svc_run returned");
    125 	return 1;
    126 }
    127