libexec/rpc.rstatd/rstatd.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. 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  * $FreeBSD: src/libexec/rpc.rstatd/rstatd.c,v 1.8 1999/08/28 00:09:54 peter Exp $
  34  * $DragonFly: src/libexec/rpc.rstatd/rstatd.c,v 1.2 2003/06/17 04:27:07 dillon Exp $
  35  */
  36
  37 #include <stdlib.h>
  38 #include <rpc/rpc.h>
  39 #include <signal.h>
  40 #include <syslog.h>
  41 #include <rpc/pmap_clnt.h>
  42 #include <rpcsvc/rstat.h>
  43
  44 extern void rstat_service();
  45
  46 int from_inetd = 1;     /* started from inetd ? */
  47 int closedown = 20;     /* how long to wait before going dormant */
  48
  49 void
  50 cleanup()
  51 {
  52         (void) pmap_unset(RSTATPROG, RSTATVERS_TIME);
  53         (void) pmap_unset(RSTATPROG, RSTATVERS_SWTCH);
  54         (void) pmap_unset(RSTATPROG, RSTATVERS_ORIG);
  55         exit(0);
  56 }
  57
  58 int
  59 main(argc, argv)
  60         int argc;
  61         char *argv[];
  62 {
  63         SVCXPRT *transp;
  64         int sock = 0;
  65         int proto = 0;
  66         struct sockaddr_in from;
  67         int fromlen;
  68
  69         if (argc == 2)
  70                 closedown = atoi(argv[1]);
  71         if (closedown <= 0)
  72                 closedown = 20;
  73
  74         /*
  75          * See if inetd started us
  76          */
  77         fromlen = sizeof(from);
  78         if (getsockname(0, (struct sockaddr *)&from, &fromlen) < 0) {
  79                 from_inetd = 0;
  80                 sock = RPC_ANYSOCK;
  81                 proto = IPPROTO_UDP;
  82         }
  83
  84         if (!from_inetd) {
  85                 daemon(0, 0);
  86
  87                 (void)pmap_unset(RSTATPROG, RSTATVERS_TIME);
  88                 (void)pmap_unset(RSTATPROG, RSTATVERS_SWTCH);
  89                 (void)pmap_unset(RSTATPROG, RSTATVERS_ORIG);
  90
  91                 (void) signal(SIGINT, cleanup);
  92                 (void) signal(SIGTERM, cleanup);
  93                 (void) signal(SIGHUP, cleanup);
  94         }
  95
  96         openlog("rpc.rstatd", LOG_CONS|LOG_PID, LOG_DAEMON);
  97
  98         transp = svcudp_create(sock);
  99         if (transp == NULL) {
 100                 syslog(LOG_ERR, "cannot create udp service");
 101                 exit(1);
 102         }
 103         if (!svc_register(transp, RSTATPROG, RSTATVERS_TIME, rstat_service, proto)) {
 104                 syslog(LOG_ERR, "unable to register (RSTATPROG, RSTATVERS_TIME, %s)", proto?"udp":"(inetd)");
 105                 exit(1);
 106         }
 107         if (!svc_register(transp, RSTATPROG, RSTATVERS_SWTCH, rstat_service, proto)) {
 108                 syslog(LOG_ERR, "unable to register (RSTATPROG, RSTATVERS_SWTCH, %s)", proto?"udp":"(inetd)");
 109                 exit(1);
 110         }
 111         if (!svc_register(transp, RSTATPROG, RSTATVERS_ORIG, rstat_service, proto)) {
 112                 syslog(LOG_ERR, "unable to register (RSTATPROG, RSTATVERS_ORIG, %s)", proto?"udp":"(inetd)");
 113                 exit(1);
 114         }
 115
 116         svc_run();
 117         syslog(LOG_ERR, "svc_run returned");
 118         exit(1);
 119 }