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      1 /*	$NetBSD: rstatd.c,v 1.15 2011/08/29 20:41:06 joerg 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. All advertising materials mentioning features or use of this software
     16  *    must display the following acknowledgement:
     17  *	This product includes software developed by the University of
     18  *	California, Berkeley and its contributors.
     19  * 4. Neither the name of the University nor the names of its contributors
     20  *    may be used to endorse or promote products derived from this software
     21  *    without specific prior written permission.
     22  *
     23  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     24  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     25  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     26  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     27  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     28  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     29  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     30  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     31  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     32  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     33  * SUCH DAMAGE.
     34  */
     35 
     36 #include <sys/cdefs.h>
     37 #ifndef lint
     38 __RCSID("$NetBSD: rstatd.c,v 1.15 2011/08/29 20:41:06 joerg Exp $");
     39 #endif /* not lint */
     40 
     41 #include <sys/types.h>
     42 #include <sys/socket.h>
     43 
     44 #include <stdio.h>
     45 #include <rpc/rpc.h>
     46 #include <signal.h>
     47 #include <syslog.h>
     48 #include <string.h>
     49 #include <stdlib.h>
     50 #include <rpcsvc/rstat.h>
     51 
     52 extern void rstat_service(struct svc_req *, SVCXPRT *);
     53 __dead static void cleanup(int);
     54 
     55 int from_inetd = 1;     /* started from inetd ? */
     56 int closedown = 20;	/* how long to wait before going dormant */
     57 
     58 static void
     59 cleanup(int dummy)
     60 {
     61         (void) rpcb_unset(RSTATPROG, RSTATVERS_TIME, NULL);
     62         (void) rpcb_unset(RSTATPROG, RSTATVERS_SWTCH, NULL);
     63         (void) rpcb_unset(RSTATPROG, RSTATVERS_ORIG, NULL);
     64         exit(0);
     65 }
     66 
     67 int
     68 main(int argc, char *argv[])
     69 {
     70 	SVCXPRT *transp;
     71 	struct sockaddr_storage from;
     72 	socklen_t fromlen;
     73 
     74         if (argc == 2)
     75                 closedown = atoi(argv[1]);
     76         if (closedown <= 0)
     77                 closedown = 20;
     78 
     79         /*
     80          * See if inetd started us
     81          */
     82 	fromlen = sizeof(from);
     83         if (getsockname(0, (struct sockaddr *)&from, &fromlen) < 0)
     84                 from_inetd = 0;
     85 
     86         if (!from_inetd) {
     87                 /* daemon(0, 0); */
     88 
     89                 (void)rpcb_unset(RSTATPROG, RSTATVERS_TIME, NULL);
     90                 (void)rpcb_unset(RSTATPROG, RSTATVERS_SWTCH, NULL);
     91                 (void)rpcb_unset(RSTATPROG, RSTATVERS_ORIG, NULL);
     92 
     93 		(void) signal(SIGINT, cleanup);
     94 		(void) signal(SIGTERM, cleanup);
     95 		(void) signal(SIGHUP, cleanup);
     96         }
     97 
     98         openlog("rpc.rstatd", LOG_PID, LOG_DAEMON);
     99 
    100 	if (from_inetd) {
    101 		transp = svc_dg_create(0, 0, 0);
    102 		if (transp == NULL) {
    103 			syslog(LOG_ERR, "cannot create udp service.");
    104 			exit(1);
    105 		}
    106 
    107 		if (!svc_reg(transp, RSTATPROG, RSTATVERS_TIME, rstat_service,
    108 		    NULL)) {
    109 			syslog(LOG_ERR, "unable to register (RSTATPROG,"
    110 			    "RSTATVERS_TIME)");
    111 			exit(1);
    112 		}
    113 
    114 		if (!svc_reg(transp, RSTATPROG, RSTATVERS_SWTCH, rstat_service,
    115 		    NULL)) {
    116 			syslog(LOG_ERR, "unable to register (RSTATPROG,"
    117 			    "RSTATVERS_TIME)");
    118 			exit(1);
    119 		}
    120 
    121 		if (!svc_reg(transp, RSTATPROG, RSTATVERS_ORIG, rstat_service,
    122 		    NULL)) {
    123 			syslog(LOG_ERR, "unable to register (RSTATPROG,"
    124 			    "RSTATVERS_ORIG)");
    125 			exit(1);
    126 		}
    127 	} else {
    128 		if (!svc_create(rstat_service, RSTATPROG, RSTATVERS_TIME,
    129 		    "udp")) {
    130 			syslog(LOG_ERR,
    131 			    "unable to create (RSTATPROG, RSTATVERS_TIME).");
    132 			exit(1);
    133 		}
    134 		if (!svc_create(rstat_service, RSTATPROG, RSTATVERS_SWTCH,
    135 		    "udp")) {
    136 			syslog(LOG_ERR,
    137 			    "unable to create (RSTATPROG, RSTATVERS_SWTCH).");
    138 			exit(1);
    139 		}
    140 		if (!svc_create(rstat_service, RSTATPROG, RSTATVERS_ORIG,
    141 		    "udp")) {
    142 			syslog(LOG_ERR,
    143 			    "unable to register (RSTATPROG, RSTATVERS_ORIG).");
    144 			exit(1);
    145 		}
    146 	}
    147 
    148         svc_run();
    149 	syslog(LOG_ERR, "svc_run returned");
    150 	exit(1);
    151 }
    152