libexec/rpc.rusersd/rusersd.c

   1 /*      $NetBSD: rusersd.c,v 1.16 2006/05/09 20:18:07 mrg 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 1.16 2006/05/09 20:18:07 mrg 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 }