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rusersd.c revision 1.2 
      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 #include <stdio.h>
     35 #include <rpc/rpc.h>
     36 #include <signal.h>
     37 #include <syslog.h>
     38 #define utmp rutmp
     39 #include <rpcsvc/rnusers.h>
     40 #undef utmp
     41 
     42 extern void rusers_service();
     43 
     44 int from_inetd = 1;
     45 
     46 void
     47 cleanup()
     48 {
     49         (void) pmap_unset(RUSERSPROG, RUSERSVERS_IDLE);
     50         (void) pmap_unset(RUSERSPROG, RUSERSVERS_ORIG);
     51         exit(0);
     52 }
     53 
     54 main(argc, argv)
     55         int argc;
     56         char *argv[];
     57 {
     58 	SVCXPRT *transp;
     59         int sock = 0;
     60         int proto = 0;
     61 	struct sockaddr_in from;
     62 	int fromlen;
     63 
     64         /*
     65          * See if inetd started us
     66          */
     67         if (getsockname(0, (struct sockaddr *)&from, &fromlen) < 0) {
     68                 from_inetd = 0;
     69                 sock = RPC_ANYSOCK;
     70                 proto = IPPROTO_UDP;
     71         }
     72 
     73         if (!from_inetd) {
     74                 daemon(0, 0);
     75 
     76                 (void) pmap_unset(RUSERSPROG, RUSERSVERS_IDLE);
     77                 (void) pmap_unset(RUSERSPROG, RUSERSVERS_ORIG);
     78 
     79 		(void) signal(SIGINT, cleanup);
     80 		(void) signal(SIGTERM, cleanup);
     81 		(void) signal(SIGHUP, cleanup);
     82         }
     83 
     84         openlog("rpc.rusersd", LOG_PID, LOG_DAEMON);
     85 
     86 	transp = svcudp_create(sock);
     87 	if (transp == NULL) {
     88 		syslog(LOG_ERR, "cannot create udp service.");
     89 		exit(1);
     90 	}
     91 	if (!svc_register(transp, RUSERSPROG, RUSERSVERS_IDLE, rusers_service, proto)) {
     92 		syslog(LOG_ERR, "unable to register (RUSERSPROG, RUSERSVERS_IDLE, %s).", proto?"udp":"(inetd)");
     93 		exit(1);
     94 	}
     95 
     96 	if (!svc_register(transp, RUSERSPROG, RUSERSVERS_ORIG, rusers_service, proto)) {
     97 		syslog(LOG_ERR, "unable to register (RUSERSPROG, RUSERSVERS_ORIG, %s).", proto?"udp":"(inetd)");
     98 		exit(1);
     99 	}
    100 
    101         svc_run();
    102 	syslog(LOG_ERR, "svc_run returned");
    103 	exit(1);
    104 }
    105