hunt/huntd/ctl.c

   1 /*      $NetBSD: ctl.c,v 1.5 2009/07/04 04:29:54 dholland Exp $ */
   2 /*
   3  * Copyright (c) 1983-2003, Regents of the University of California.
   4  * All rights reserved.
   5  *
   6  * Redistribution and use in source and binary forms, with or without
   7  * modification, are permitted provided that the following conditions are
   8  * met:
   9  *
  10  * + Redistributions of source code must retain the above copyright
  11  *   notice, this list of conditions and the following disclaimer.
  12  * + 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  * + Neither the name of the University of California, San Francisco nor
  16  *   the names of its contributors may be used to endorse or promote
  17  *   products derived from this software without specific prior written
  18  *   permission.
  19  *
  20  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
  21  * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
  22  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
  23  * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  24  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  25  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  26  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  27  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  28  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  29  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  30  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  31  */
  32
  33 #include "bsd.h"
  34
  35 #if defined(TALK_43) || defined(TALK_42)
  36
  37 #include <sys/cdefs.h>
  38 #ifndef lint
  39 #if 0
  40 static char sccsid[] = "@(#)ctl.c       5.2 (Berkeley) 3/13/86";
  41 #else
  42 __RCSID("$NetBSD: ctl.c,v 1.5 2009/07/04 04:29:54 dholland Exp $");
  43 #endif
  44 #endif /* not lint */
  45
  46 /*
  47  * This file handles haggling with the various talk daemons to
  48  * get a socket to talk to. sockt is opened and connected in
  49  * the progress
  50  */
  51
  52 #include "hunt.h"
  53 #include "talk_ctl.h"
  54
  55 struct sockaddr_in daemon_addr = { AF_INET };
  56 struct sockaddr_in ctl_addr = { AF_INET };
  57
  58 /* inet addresses of the two machines */
  59 struct in_addr my_machine_addr;
  60 struct in_addr his_machine_addr;
  61
  62 u_short daemon_port;    /* port number of the talk daemon */
  63
  64 int ctl_sockt;
  65
  66 CTL_MSG msg;
  67
  68 /* open the ctl socket */
  69 void
  70 open_ctl(void)
  71 {
  72         int length;
  73
  74         ctl_addr.sin_port = 0;
  75         ctl_addr.sin_addr = my_machine_addr;
  76         ctl_sockt = socket(AF_INET, SOCK_DGRAM, 0);
  77         if (ctl_sockt <= 0)
  78                 p_error("Bad socket");
  79         if (bind(ctl_sockt, &ctl_addr, sizeof(ctl_addr)) != 0)
  80                 p_error("Couldn't bind to control socket");
  81         length = sizeof(ctl_addr);
  82         if (getsockname(ctl_sockt, (struct sockaddr *) &ctl_addr, &length) < 0)
  83                 p_error("Bad address for ctl socket");
  84 }
  85 #endif