talk.tproj/init_disp.c

   1 /*
   2  * Copyright (c) 1999 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * Copyright (c) 1999-2003 Apple Computer, Inc.  All Rights Reserved.
   7  *
   8  * This file contains Original Code and/or Modifications of Original Code
   9  * as defined in and that are subject to the Apple Public Source License
  10  * Version 2.0 (the 'License'). You may not use this file except in
  11  * compliance with the License. Please obtain a copy of the License at
  12  * http://www.opensource.apple.com/apsl/ and read it before using this
  13  * file.
  14  *
  15  * The Original Code and all software distributed under the License are
  16  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  17  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  18  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  19  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  20  * Please see the License for the specific language governing rights and
  21  * limitations under the License.
  22  *
  23  * @APPLE_LICENSE_HEADER_END@
  24  */
  25 /*
  26  * Copyright (c) 1983, 1993
  27  *      The Regents of the University of California.  All rights reserved.
  28  *
  29  * Redistribution and use in source and binary forms, with or without
  30  * modification, are permitted provided that the following conditions
  31  * are met:
  32  * 1. Redistributions of source code must retain the above copyright
  33  *    notice, this list of conditions and the following disclaimer.
  34  * 2. Redistributions in binary form must reproduce the above copyright
  35  *    notice, this list of conditions and the following disclaimer in the
  36  *    documentation and/or other materials provided with the distribution.
  37  * 3. All advertising materials mentioning features or use of this software
  38  *    must display the following acknowledgement:
  39  *      This product includes software developed by the University of
  40  *      California, Berkeley and its contributors.
  41  * 4. Neither the name of the University nor the names of its contributors
  42  *    may be used to endorse or promote products derived from this software
  43  *    without specific prior written permission.
  44  *
  45  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  46  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  47  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  48  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  49  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  50  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  51  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  52  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  53  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  54  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  55  * SUCH DAMAGE.
  56  */
  57
  58
  59 /*
  60  * Initialization code for the display package,
  61  * as well as the signal handling routines.
  62  */
  63
  64 #include <sys/ioctl.h>
  65 #include <sys/ioctl_compat.h>
  66
  67 #include <signal.h>
  68 #include <err.h>
  69 #include "talk.h"
  70
  71 /*
  72  * Set up curses, catch the appropriate signals,
  73  * and build the various windows.
  74  */
  75 init_display()
  76 {
  77         void sig_sent();
  78         struct sigvec sigv;
  79
  80         if (initscr() == NULL)
  81                 errx(1, "Terminal type unset or lacking necessary features.");
  82         (void) sigvec(SIGTSTP, (struct sigvec *)0, &sigv);
  83         sigv.sv_mask |= sigmask(SIGALRM);
  84         (void) _sigvec_nobind(SIGTSTP, &sigv, (struct sigvec *)0);
  85         curses_initialized = 1;
  86         clear();
  87         refresh();
  88         noecho();
  89         crmode();
  90         signal(SIGINT, sig_sent);
  91         signal(SIGPIPE, sig_sent);
  92         /* curses takes care of ^Z */
  93         my_win.x_nlines = LINES / 2;
  94         my_win.x_ncols = COLS;
  95         my_win.x_win = newwin(my_win.x_nlines, my_win.x_ncols, 0, 0);
  96         scrollok(my_win.x_win, FALSE);
  97         wclear(my_win.x_win);
  98
  99         his_win.x_nlines = LINES / 2 - 1;
 100         his_win.x_ncols = COLS;
 101         his_win.x_win = newwin(his_win.x_nlines, his_win.x_ncols,
 102             my_win.x_nlines+1, 0);
 103         scrollok(his_win.x_win, FALSE);
 104         wclear(his_win.x_win);
 105
 106         line_win = newwin(1, COLS, my_win.x_nlines, 0);
 107         box(line_win, '-', '-');
 108         wrefresh(line_win);
 109         /* let them know we are working on it */
 110         current_state = "No connection yet";
 111 }
 112
 113 /*
 114  * Trade edit characters with the other talk. By agreement
 115  * the first three characters each talk transmits after
 116  * connection are the three edit characters.
 117  */
 118 set_edit_chars()
 119 {
 120         char buf[3];
 121         int cc;
 122         struct sgttyb tty;
 123         struct ltchars ltc;
 124
 125         ioctl(0, TIOCGETP, &tty);
 126         ioctl(0, TIOCGLTC, (struct sgttyb *)&ltc);
 127         my_win.cerase = tty.sg_erase;
 128         my_win.kill = tty.sg_kill;
 129         if (ltc.t_werasc == (char) -1)
 130                 my_win.werase = '\027';  /* control W */
 131         else
 132                 my_win.werase = ltc.t_werasc;
 133         buf[0] = my_win.cerase;
 134         buf[1] = my_win.kill;
 135         buf[2] = my_win.werase;
 136         cc = write(sockt, buf, sizeof(buf));
 137         if (cc != sizeof(buf) )
 138                 p_error("Lost the connection");
 139         cc = read(sockt, buf, sizeof(buf));
 140         if (cc != sizeof(buf) )
 141                 p_error("Lost the connection");
 142         his_win.cerase = buf[0];
 143         his_win.kill = buf[1];
 144         his_win.werase = buf[2];
 145 }
 146
 147 void
 148 sig_sent()
 149 {
 150
 151         message("Connection closing. Exiting");
 152         quit();
 153 }
 154
 155 /*
 156  * All done talking...hang up the phone and reset terminal thingy's
 157  */
 158 quit()
 159 {
 160
 161         if (curses_initialized) {
 162                 wmove(his_win.x_win, his_win.x_nlines-1, 0);
 163                 wclrtoeol(his_win.x_win);
 164                 wrefresh(his_win.x_win);
 165                 endwin();
 166         }
 167         if (invitation_waiting)
 168                 send_delete();
 169         exit(0);
 170 }