usr/src/cmd/cmd-inet/usr.bin/talk/init_disp.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 1994 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  * init_disp contains the initialization code for the display package,
  44  * as well as the signal handling routines
  45  */
  46
  47 #include "talk.h"
  48 #include <signal.h>
  49 #include <libintl.h>
  50
  51 #ifdef SYSV
  52 #define signal(s, f)    sigset(s, f)
  53 #endif /* SYSV */
  54
  55 static void sig_sent();
  56
  57 /*
  58  * set up curses, catch the appropriate signals, and build the
  59  * various windows
  60  */
  61
  62 void
  63 init_display()
  64 {
  65         initscr();
  66         curses_initialized = 1;
  67
  68         clear();
  69         refresh();
  70
  71         noecho();
  72         crmode();
  73
  74         signal(SIGINT, sig_sent);
  75         signal(SIGPIPE, sig_sent);
  76
  77         /* curses takes care of ^Z */
  78
  79         my_win.x_nlines = LINES / 2;
  80         my_win.x_ncols = COLS;
  81         my_win.x_win = newwin(my_win.x_nlines, my_win.x_ncols, 0, 0);
  82         scrollok(my_win.x_win, FALSE);
  83         wclear(my_win.x_win);
  84
  85         rem_win.x_nlines = LINES / 2 - 1;
  86         rem_win.x_ncols = COLS;
  87         rem_win.x_win = newwin(rem_win.x_nlines, rem_win.x_ncols,
  88                                                 my_win.x_nlines+1, 0);
  89         scrollok(rem_win.x_win, FALSE);
  90         wclear(rem_win.x_win);
  91
  92         line_win = newwin(1, COLS, my_win.x_nlines, 0);
  93         box(line_win, '-', '-');
  94         wrefresh(line_win);
  95
  96         /* let them know we are working on it */
  97
  98         current_state = gettext("No connection yet");
  99 }
 100
 101         /*
 102          * trade edit characters with the other talk. By agreement
 103          * the first three characters each talk transmits after
 104          * connection are the three edit characters
 105          */
 106
 107 void
 108 set_edit_chars()
 109 {
 110         char buf[3];
 111         int cc;
 112 #ifdef SYSV
 113         struct termios tty;
 114         ioctl(0, TCGETS, (struct termios *)&tty);
 115
 116         buf[0] = my_win.cerase = tty.c_cc[VERASE];
 117                                         /* for SVID should be VERSE */
 118         buf[1] = my_win.kill = tty.c_cc[VKILL];
 119         buf[2] = my_win.werase = tty.c_cc[VWERASE];
 120                                         /* for SVID should be VWERSE */
 121 #else /* ! SYSV */
 122         struct sgttyb tty;
 123         struct ltchars ltc;
 124
 125         gtty(0, &tty);
 126
 127         ioctl(0, TIOCGLTC, (struct sgttyb *)&ltc);
 128
 129         my_win.cerase = tty.sg_erase;
 130         my_win.kill = tty.sg_kill;
 131
 132         if (ltc.t_werasc == (char)-1) {
 133                 my_win.werase = '\027';  /* control W */
 134         } else {
 135                 my_win.werase = ltc.t_werasc;
 136         }
 137
 138         buf[0] = my_win.cerase;
 139         buf[1] = my_win.kill;
 140         buf[2] = my_win.werase;
 141 #endif /* SYSV */
 142
 143         cc = write(sockt, buf, sizeof (buf));
 144
 145         if (cc != sizeof (buf)) {
 146                 p_error(gettext("Lost the connection"));
 147         }
 148
 149         cc = read(sockt, buf, sizeof (buf));
 150
 151         if (cc != sizeof (buf)) {
 152                 p_error(gettext("Lost the connection"));
 153         }
 154
 155         rem_win.cerase = buf[0];
 156         rem_win.kill = buf[1];
 157         rem_win.werase = buf[2];
 158 }
 159
 160 static void
 161 sig_sent()
 162 {
 163         message(gettext("Connection closing. Exiting"));
 164         quit();
 165 }
 166
 167 /*
 168  * All done talking...hang up the phone and reset terminal thingy's
 169  */
 170
 171 void
 172 quit()
 173 {
 174         if (curses_initialized) {
 175                 wmove(rem_win.x_win, rem_win.x_nlines-1, 0);
 176                 wclrtoeol(rem_win.x_win);
 177                 wrefresh(rem_win.x_win);
 178                 endwin();
 179         }
 180
 181         if (invitation_waiting) {
 182                 send_delete();
 183         }
 184
 185         exit(0);
 186 }