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
  34 #ifndef lint
  35 static const char rcsid[] =
  36   "$FreeBSD$";
  37 #endif /* not lint */
  38
  39 #include <stdlib.h>
  40 #include <rpc/rpc.h>
  41 #include <signal.h>
  42 #include <syslog.h>
  43 #include <rpcsvc/rstat.h>
  44
  45 extern void rstat_service(struct svc_req *, SVCXPRT *);
  46
  47 int from_inetd = 1;     /* started from inetd ? */
  48 int closedown = 20;     /* how long to wait before going dormant */
  49
  50 void
  51 cleanup(int sig __unused)
  52 {
  53         (void) rpcb_unset(RSTATPROG, RSTATVERS_TIME, NULL);
  54         (void) rpcb_unset(RSTATPROG, RSTATVERS_SWTCH, NULL);
  55         (void) rpcb_unset(RSTATPROG, RSTATVERS_ORIG, NULL);
  56         exit(0);
  57 }
  58
  59 int
  60 main(int argc, char *argv[])
  61 {
  62         SVCXPRT *transp;
  63         int ok;
  64         struct sockaddr_storage from;
  65         socklen_t fromlen;
  66
  67         if (argc == 2)
  68                 closedown = atoi(argv[1]);
  69         if (closedown <= 0)
  70                 closedown = 20;
  71
  72         /*
  73          * See if inetd started us
  74          */
  75         fromlen = sizeof(from);
  76         if (getsockname(0, (struct sockaddr *)&from, &fromlen) < 0) {
  77                 from_inetd = 0;
  78         }
  79
  80         if (!from_inetd) {
  81                 daemon(0, 0);
  82
  83                 (void)rpcb_unset(RSTATPROG, RSTATVERS_TIME, NULL);
  84                 (void)rpcb_unset(RSTATPROG, RSTATVERS_SWTCH, NULL);
  85                 (void)rpcb_unset(RSTATPROG, RSTATVERS_ORIG, NULL);
  86
  87                 (void) signal(SIGINT, cleanup);
  88                 (void) signal(SIGTERM, cleanup);
  89                 (void) signal(SIGHUP, cleanup);
  90         }
  91
  92         openlog("rpc.rstatd", LOG_CONS|LOG_PID, LOG_DAEMON);
  93
  94         if (from_inetd) {
  95                 transp = svc_tli_create(0, NULL, NULL, 0, 0);
  96                 if (transp == NULL) {
  97                         syslog(LOG_ERR, "cannot create udp service.");
  98                         exit(1);
  99                 }
 100                 ok = svc_reg(transp, RSTATPROG, RSTATVERS_TIME,
 101                              rstat_service, NULL);
 102         } else
 103                 ok = svc_create(rstat_service,
 104                                 RSTATPROG, RSTATVERS_TIME, "udp");
 105         if (!ok) {
 106                 syslog(LOG_ERR, "unable to register (RSTATPROG, RSTATVERS_TIME, %s)", (!from_inetd)?"udp":"(inetd)");
 107                 exit(1);
 108         }
 109         if (from_inetd)
 110                 ok = svc_reg(transp, RSTATPROG, RSTATVERS_SWTCH,
 111                              rstat_service, NULL);
 112         else
 113                 ok = svc_create(rstat_service,
 114                                 RSTATPROG, RSTATVERS_SWTCH, "udp");
 115         if (!ok) {
 116                 syslog(LOG_ERR, "unable to register (RSTATPROG, RSTATVERS_SWTCH, %s)", (!from_inetd)?"udp":"(inetd)");
 117                 exit(1);
 118         }
 119         if (from_inetd)
 120                 ok = svc_reg(transp, RSTATPROG, RSTATVERS_ORIG,
 121                              rstat_service, NULL);
 122         else
 123                 ok = svc_create(rstat_service,
 124                                 RSTATPROG, RSTATVERS_ORIG, "udp");
 125         if (!ok) {
 126                 syslog(LOG_ERR, "unable to register (RSTATPROG, RSTATVERS_ORIG, %s)", (!from_inetd)?"udp":"(inetd)");
 127                 exit(1);
 128         }
 129
 130         svc_run();
 131         syslog(LOG_ERR, "svc_run returned");
 132         exit(1);
 133 }