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rusersd.c revision 1.4 
      1 /*-
      2  * Copyright (c) 1993, John Brezak
      3  * All rights reserved.
      4  *
      5  * Redistribution and use in source and binary forms, with or without
      6  * modification, are permitted provided that the following conditions
      7  * are met:
      8  * 1. Redistributions of source code must retain the above copyright
      9  *    notice, this list of conditions and the following disclaimer.
     10  * 2. Redistributions in binary form must reproduce the above copyright
     11  *    notice, this list of conditions and the following disclaimer in the
     12  *    documentation and/or other materials provided with the distribution.
     13  * 3. All advertising materials mentioning features or use of this software
     14  *    must display the following acknowledgement:
     15  *	This product includes software developed by the University of
     16  *	California, Berkeley and its contributors.
     17  * 4. Neither the name of the University nor the names of its contributors
     18  *    may be used to endorse or promote products derived from this software
     19  *    without specific prior written permission.
     20  *
     21  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     22  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     23  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     24  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     25  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     26  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     27  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     28  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     29  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     30  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     31  * SUCH DAMAGE.
     32  */
     33 
     34 #ifndef lint
     35 static char rcsid[] = "$Id: rusersd.c,v 1.4 1993/08/02 17:50:47 mycroft Exp $";
     36 #endif /* not lint */
     37 
     38 #include <stdio.h>
     39 #include <rpc/rpc.h>
     40 #include <signal.h>
     41 #include <syslog.h>
     42 #define utmp rutmp
     43 #include <rpcsvc/rnusers.h>
     44 #undef utmp
     45 
     46 extern void rusers_service();
     47 
     48 int from_inetd = 1;
     49 
     50 void
     51 cleanup()
     52 {
     53         (void) pmap_unset(RUSERSPROG, RUSERSVERS_IDLE);
     54         (void) pmap_unset(RUSERSPROG, RUSERSVERS_ORIG);
     55         exit(0);
     56 }
     57 
     58 main(argc, argv)
     59         int argc;
     60         char *argv[];
     61 {
     62 	SVCXPRT *transp;
     63         int sock = 0;
     64         int proto = 0;
     65 	struct sockaddr_in from;
     66 	int fromlen;
     67 
     68         /*
     69          * See if inetd started us
     70          */
     71         if (getsockname(0, (struct sockaddr *)&from, &fromlen) < 0) {
     72                 from_inetd = 0;
     73                 sock = RPC_ANYSOCK;
     74                 proto = IPPROTO_UDP;
     75         }
     76 
     77         if (!from_inetd) {
     78                 daemon(0, 0);
     79 
     80                 (void) pmap_unset(RUSERSPROG, RUSERSVERS_IDLE);
     81                 (void) pmap_unset(RUSERSPROG, RUSERSVERS_ORIG);
     82 
     83 		(void) signal(SIGINT, cleanup);
     84 		(void) signal(SIGTERM, cleanup);
     85 		(void) signal(SIGHUP, cleanup);
     86         }
     87 
     88         openlog("rpc.rusersd", LOG_CONS|LOG_PID, LOG_DAEMON);
     89 
     90 	transp = svcudp_create(sock);
     91 	if (transp == NULL) {
     92 		syslog(LOG_ERR, "cannot create udp service.");
     93 		exit(1);
     94 	}
     95 	if (!svc_register(transp, RUSERSPROG, RUSERSVERS_IDLE, rusers_service, proto)) {
     96 		syslog(LOG_ERR, "unable to register (RUSERSPROG, RUSERSVERS_IDLE, %s).", proto?"udp":"(inetd)");
     97 		exit(1);
     98 	}
     99 
    100 	if (!svc_register(transp, RUSERSPROG, RUSERSVERS_ORIG, rusers_service, proto)) {
    101 		syslog(LOG_ERR, "unable to register (RUSERSPROG, RUSERSVERS_ORIG, %s).", proto?"udp":"(inetd)");
    102 		exit(1);
    103 	}
    104 
    105         svc_run();
    106 	syslog(LOG_ERR, "svc_run returned");
    107 	exit(1);
    108 }
    109