libexec/rpc.rusersd/rusersd.c

   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. Neither the name of the University nor the names of its contributors
  14  *    may be used to endorse or promote products derived from this software
  15  *    without specific prior written permission.
  16  *
  17  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  18  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  19  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  20  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  21  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  22  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  23  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  24  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  25  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  26  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  27  * SUCH DAMAGE.
  28  *
  29  * $FreeBSD: src/libexec/rpc.rusersd/rusersd.c,v 1.8 1999/08/28 00:09:56 peter Exp $
  30  */
  31
  32 #include <stdlib.h>
  33 #include <rpc/rpc.h>
  34 #include <rpc/pmap_clnt.h>
  35 #include <signal.h>
  36 #include <syslog.h>
  37 #define utmp rutmp
  38 #include <rpcsvc/rnusers.h>
  39 #undef utmp
  40
  41 extern void rusers_service();
  42
  43 int from_inetd = 1;
  44
  45 void
  46 cleanup(int sig)
  47 {
  48         (void) pmap_unset(RUSERSPROG, RUSERSVERS_IDLE);
  49         (void) pmap_unset(RUSERSPROG, RUSERSVERS_ORIG);
  50         exit(0);
  51 }
  52
  53 int
  54 main(int argc, char *argv[])
  55 {
  56         SVCXPRT *transp;
  57         int sock = 0;
  58         int proto = 0;
  59         struct sockaddr_in from;
  60         int fromlen;
  61
  62         /*
  63          * See if inetd started us
  64          */
  65         fromlen = sizeof(from);
  66         if (getsockname(0, (struct sockaddr *)&from, &fromlen) < 0) {
  67                 from_inetd = 0;
  68                 sock = RPC_ANYSOCK;
  69                 proto = IPPROTO_UDP;
  70         }
  71
  72         if (!from_inetd) {
  73                 daemon(0, 0);
  74
  75                 (void) pmap_unset(RUSERSPROG, RUSERSVERS_IDLE);
  76                 (void) pmap_unset(RUSERSPROG, RUSERSVERS_ORIG);
  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         transp = svcudp_create(sock);
  86         if (transp == NULL) {
  87                 syslog(LOG_ERR, "cannot create udp service");
  88                 exit(1);
  89         }
  90         if (!svc_register(transp, RUSERSPROG, RUSERSVERS_IDLE, rusers_service, proto)) {
  91                 syslog(LOG_ERR, "unable to register (RUSERSPROG, RUSERSVERS_IDLE, %s)", proto?"udp":"(inetd)");
  92                 exit(1);
  93         }
  94
  95         if (!svc_register(transp, RUSERSPROG, RUSERSVERS_ORIG, rusers_service, proto)) {
  96                 syslog(LOG_ERR, "unable to register (RUSERSPROG, RUSERSVERS_ORIG, %s)", proto?"udp":"(inetd)");
  97                 exit(1);
  98         }
  99
 100         svc_run();
 101         syslog(LOG_ERR, "svc_run returned");
 102         exit(1);
 103 }