1: /*      $NetBSD: ctl.c,v 1.3 2003/06/11 12:00:22 wiz 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 1.3 2003/06/11 12:00:22 wiz 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() 
   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