usr/src/cmd/cmd-inet/usr.bin/talk/ctl.c

   1 /*
   2  * CDDL HEADER START
   3  *
   4  * The contents of this file are subject to the terms of the
   5  * Common Development and Distribution License, Version 1.0 only
   6  * (the "License").  You may not use this file except in compliance
   7  * with the License.
   8  *
   9  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
  10  * or http://www.opensolaris.org/os/licensing.
  11  * See the License for the specific language governing permissions
  12  * and limitations under the License.
  13  *
  14  * When distributing Covered Code, include this CDDL HEADER in each
  15  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  16  * If applicable, add the following below this CDDL HEADER, with the
  17  * fields enclosed by brackets "[]" replaced with your own identifying
  18  * information: Portions Copyright [yyyy] [name of copyright owner]
  19  *
  20  * CDDL HEADER END
  21  */
  22 /*
  23  * Copyright 1997 Sun Microsystems, Inc.  All rights reserved.
  24  * Use is subject to license terms.
  25  */
  26
  27 /*      Copyright (c) 1983, 1984, 1985, 1986, 1987, 1988, 1989 AT&T     */
  28 /*        All Rights Reserved   */
  29
  30 /*
  31  * University Copyright- Copyright (c) 1982, 1986, 1988
  32  * The Regents of the University of California
  33  * All Rights Reserved
  34  *
  35  * University Acknowledgment- Portions of this document are derived from
  36  * software developed by the University of California, Berkeley, and its
  37  * contributors.
  38  */
  39
  40 #pragma ident   "%Z%%M% %I%     %E% SMI"
  41
  42 /*
  43  * This file handles haggling with the various talk daemons to
  44  * get a socket to talk to. sockt is opened and connected in
  45  * the progress
  46  */
  47
  48 #include "talk_ctl.h"
  49 #include <libintl.h>
  50
  51 struct sockaddr_in daemon_addr = { AF_INET };
  52 struct sockaddr_in ctl_addr = { AF_INET };
  53 struct sockaddr_in my_addr = { AF_INET };
  54
  55 /* inet addresses of the two machines */
  56 struct in_addr my_machine_addr;
  57 struct in_addr rem_machine_addr;
  58
  59 u_short daemon_port;    /* port number of the talk daemon */
  60
  61 int ctl_sockt;
  62 int sockt;
  63 int invitation_waiting = 0;
  64
  65 CTL_MSG msg;
  66
  67 void
  68 open_sockt()
  69 {
  70         socklen_t length;
  71
  72         my_addr.sin_addr = my_machine_addr;
  73         my_addr.sin_port = 0;
  74
  75         sockt = socket(AF_INET, SOCK_STREAM, 0);
  76
  77         if (sockt <= 0) {
  78                 p_error(gettext("Bad socket"));
  79         }
  80
  81         if (bind(sockt, (struct sockaddr *)&my_addr, sizeof (my_addr)) != 0) {
  82                 p_error(gettext("Binding local socket"));
  83         }
  84
  85         length = (socklen_t) sizeof (my_addr);
  86
  87         if (getsockname(sockt, (struct sockaddr *)&my_addr, &length) == -1) {
  88                 p_error(gettext("Bad address for socket"));
  89         }
  90 }
  91
  92         /* open the ctl socket */
  93
  94 void
  95 open_ctl()
  96 {
  97         socklen_t length;
  98
  99         ctl_addr.sin_port = 0;
 100         ctl_addr.sin_addr = my_machine_addr;
 101
 102         ctl_sockt = socket(AF_INET, SOCK_DGRAM, 0);
 103
 104         if (ctl_sockt <= 0) {
 105                 p_error(gettext("Bad socket"));
 106         }
 107
 108         if (bind(ctl_sockt, (struct sockaddr *)&ctl_addr, sizeof (ctl_addr))
 109                 != 0) {
 110                 p_error(gettext("Couldn't bind to control socket"));
 111         }
 112
 113         length = (socklen_t) sizeof (ctl_addr);
 114         if (getsockname(ctl_sockt, (struct sockaddr *)&ctl_addr, &length)
 115                 == -1) {
 116                 p_error(gettext("Bad address for ctl socket"));
 117         }
 118 }
 119
 120 /* print_addr is a debug print routine */
 121
 122 void
 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, (int)addr.sin_port, addr.sin_family);
 130
 131         for (i = 0; i < 8; i++) {
 132                 printf("%o ", (int)addr.sin_zero[i]);
 133         }
 134         putchar('\n');
 135 }