talk.tproj/ctl.c

   1 /*
   2  * Copyright (c) 1999 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * "Portions Copyright (c) 1999 Apple Computer, Inc.  All Rights
   7  * Reserved.  This file contains Original Code and/or Modifications of
   8  * Original Code as defined in and that are subject to the Apple Public
   9  * Source License Version 1.0 (the 'License').  You may not use this file
  10  * except in compliance with the License.  Please obtain a copy of the
  11  * License at http://www.apple.com/publicsource and read it before using
  12  * this file.
  13  *
  14  * The Original Code and all software distributed under the License are
  15  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  16  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  17  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  18  * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
  19  * License for the specific language governing rights and limitations
  20  * under the License."
  21  *
  22  * @APPLE_LICENSE_HEADER_END@
  23  */
  24 /*
  25  * Copyright (c) 1983, 1993
  26  *      The Regents of the University of California.  All rights reserved.
  27  *
  28  * Redistribution and use in source and binary forms, with or without
  29  * modification, are permitted provided that the following conditions
  30  * are met:
  31  * 1. Redistributions of source code must retain the above copyright
  32  *    notice, this list of conditions and the following disclaimer.
  33  * 2. Redistributions in binary form must reproduce the above copyright
  34  *    notice, this list of conditions and the following disclaimer in the
  35  *    documentation and/or other materials provided with the distribution.
  36  * 3. All advertising materials mentioning features or use of this software
  37  *    must display the following acknowledgement:
  38  *      This product includes software developed by the University of
  39  *      California, Berkeley and its contributors.
  40  * 4. Neither the name of the University nor the names of its contributors
  41  *    may be used to endorse or promote products derived from this software
  42  *    without specific prior written permission.
  43  *
  44  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  45  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  46  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  47  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  48  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  49  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  50  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  51  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  52  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  53  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  54  * SUCH DAMAGE.
  55  */
  56
  57
  58 /*
  59  * This file handles haggling with the various talk daemons to
  60  * get a socket to talk to. sockt is opened and connected in
  61  * the progress
  62  */
  63
  64 #include <sys/types.h>
  65 #include <sys/socket.h>
  66 #include <protocols/talkd.h>
  67 #include <netinet/in.h>
  68 #include "talk.h"
  69 #include "talk_ctl.h"
  70
  71 struct  sockaddr_in daemon_addr = { sizeof(daemon_addr), AF_INET };
  72 struct  sockaddr_in ctl_addr = { sizeof(ctl_addr), AF_INET };
  73 struct  sockaddr_in my_addr = { sizeof(my_addr), AF_INET };
  74
  75         /* inet addresses of the two machines */
  76 struct  in_addr my_machine_addr;
  77 struct  in_addr his_machine_addr;
  78
  79 u_short daemon_port;    /* port number of the talk daemon */
  80
  81 int     ctl_sockt;
  82 int     sockt;
  83 int     invitation_waiting = 0;
  84
  85 CTL_MSG msg;
  86
  87 open_sockt()
  88 {
  89         int length;
  90
  91         my_addr.sin_addr = my_machine_addr;
  92         my_addr.sin_port = 0;
  93         sockt = socket(AF_INET, SOCK_STREAM, 0);
  94         if (sockt <= 0)
  95                 p_error("Bad socket");
  96         if (bind(sockt, (struct sockaddr *)&my_addr, sizeof(my_addr)) != 0)
  97                 p_error("Binding local socket");
  98         length = sizeof(my_addr);
  99         if (getsockname(sockt, (struct sockaddr *)&my_addr, &length) == -1)
 100                 p_error("Bad address for socket");
 101 }
 102
 103 /* open the ctl socket */
 104 open_ctl()
 105 {
 106         int length;
 107
 108         ctl_addr.sin_port = 0;
 109         ctl_addr.sin_addr = my_machine_addr;
 110         ctl_sockt = socket(AF_INET, SOCK_DGRAM, 0);
 111         if (ctl_sockt <= 0)
 112                 p_error("Bad socket");
 113         if (bind(ctl_sockt,
 114             (struct sockaddr *)&ctl_addr, sizeof(ctl_addr)) != 0)
 115                 p_error("Couldn't bind to control socket");
 116         length = sizeof(ctl_addr);
 117         if (getsockname(ctl_sockt,
 118             (struct sockaddr *)&ctl_addr, &length) == -1)
 119                 p_error("Bad address for ctl socket");
 120 }
 121
 122 /* print_addr is a debug print routine */
 123 print_addr(addr)
 124         struct sockaddr_in addr;
 125 {
 126         int i;
 127
 128         printf("addr = %x, port = %o, family = %o zero = ",
 129                 addr.sin_addr, addr.sin_port, addr.sin_family);
 130         for (i = 0; i<8;i++)
 131         printf("%o ", (int)addr.sin_zero[i]);
 132         putchar('\n');
 133 }