talk.tproj/init_disp.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  * Initialization code for the display package,
  60  * as well as the signal handling routines.
  61  */
  62
  63 #include <sys/ioctl.h>
  64 #include <sys/ioctl_compat.h>
  65
  66 #include <signal.h>
  67 #include <err.h>
  68 #include "talk.h"
  69
  70 /*
  71  * Set up curses, catch the appropriate signals,
  72  * and build the various windows.
  73  */
  74 init_display()
  75 {
  76         void sig_sent();
  77         struct sigvec sigv;
  78
  79         if (initscr() == NULL)
  80                 errx(1, "Terminal type unset or lacking necessary features.");
  81         (void) sigvec(SIGTSTP, (struct sigvec *)0, &sigv);
  82         sigv.sv_mask |= sigmask(SIGALRM);
  83         (void) _sigvec_nobind(SIGTSTP, &sigv, (struct sigvec *)0);
  84         curses_initialized = 1;
  85         clear();
  86         refresh();
  87         noecho();
  88         crmode();
  89         signal(SIGINT, sig_sent);
  90         signal(SIGPIPE, sig_sent);
  91         /* curses takes care of ^Z */
  92         my_win.x_nlines = LINES / 2;
  93         my_win.x_ncols = COLS;
  94         my_win.x_win = newwin(my_win.x_nlines, my_win.x_ncols, 0, 0);
  95         scrollok(my_win.x_win, FALSE);
  96         wclear(my_win.x_win);
  97
  98         his_win.x_nlines = LINES / 2 - 1;
  99         his_win.x_ncols = COLS;
 100         his_win.x_win = newwin(his_win.x_nlines, his_win.x_ncols,
 101             my_win.x_nlines+1, 0);
 102         scrollok(his_win.x_win, FALSE);
 103         wclear(his_win.x_win);
 104
 105         line_win = newwin(1, COLS, my_win.x_nlines, 0);
 106         box(line_win, '-', '-');
 107         wrefresh(line_win);
 108         /* let them know we are working on it */
 109         current_state = "No connection yet";
 110 }
 111
 112 /*
 113  * Trade edit characters with the other talk. By agreement
 114  * the first three characters each talk transmits after
 115  * connection are the three edit characters.
 116  */
 117 set_edit_chars()
 118 {
 119         char buf[3];
 120         int cc;
 121         struct sgttyb tty;
 122         struct ltchars ltc;
 123
 124         ioctl(0, TIOCGETP, &tty);
 125         ioctl(0, TIOCGLTC, (struct sgttyb *)&ltc);
 126         my_win.cerase = tty.sg_erase;
 127         my_win.kill = tty.sg_kill;
 128         if (ltc.t_werasc == (char) -1)
 129                 my_win.werase = '\027';  /* control W */
 130         else
 131                 my_win.werase = ltc.t_werasc;
 132         buf[0] = my_win.cerase;
 133         buf[1] = my_win.kill;
 134         buf[2] = my_win.werase;
 135         cc = write(sockt, buf, sizeof(buf));
 136         if (cc != sizeof(buf) )
 137                 p_error("Lost the connection");
 138         cc = read(sockt, buf, sizeof(buf));
 139         if (cc != sizeof(buf) )
 140                 p_error("Lost the connection");
 141         his_win.cerase = buf[0];
 142         his_win.kill = buf[1];
 143         his_win.werase = buf[2];
 144 }
 145
 146 void
 147 sig_sent()
 148 {
 149
 150         message("Connection closing. Exiting");
 151         quit();
 152 }
 153
 154 /*
 155  * All done talking...hang up the phone and reset terminal thingy's
 156  */
 157 quit()
 158 {
 159
 160         if (curses_initialized) {
 161                 wmove(his_win.x_win, his_win.x_nlines-1, 0);
 162                 wclrtoeol(his_win.x_win);
 163                 wrefresh(his_win.x_win);
 164                 endwin();
 165         }
 166         if (invitation_waiting)
 167                 send_delete();
 168         exit(0);
 169 }