/*      $NetBSD: init_disp.c,v 1.12 2011/09/06 18:32:03 joerg Exp $     */

/*
* Copyright (c) 1983, 1993
*      The Regents of the University of California.  All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
*    notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
*    notice, this list of conditions and the following disclaimer in the
*    documentation and/or other materials provided with the distribution.
* 3. Neither the name of the University nor the names of its contributors
*    may be used to endorse or promote products derived from this software
*    without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/

#include <sys/cdefs.h>
#ifndef lint
#if 0
static char sccsid[] = "@(#)init_disp.c 8.2 (Berkeley) 2/16/94";
#endif
__RCSID("$NetBSD: init_disp.c,v 1.12 2011/09/06 18:32:03 joerg Exp $");
#endif /* not lint */

/*
* Initialization code for the display package,
* as well as the signal handling routines.
*/

#include "talk.h"
#include <sys/ioctl.h>
#include <sys/ioctl_compat.h>
#include <err.h>
#include <signal.h>
#include <termios.h>
#include <stdlib.h>
#include <unistd.h>

/*
* Set up curses, catch the appropriate signals,
* and build the various windows.
*/
void
init_display(void)
{
       struct sigaction sa;

       if (initscr() == NULL)
               errx(1, "Terminal type unset or lacking necessary features.");
       (void)sigaction(SIGTSTP, NULL, &sa);
       sigaddset(&sa.sa_mask, SIGALRM);
       (void)sigaction(SIGTSTP, &sa, NULL);
       curses_initialized = 1;
       clear();
       refresh();
       noecho();
       cbreak();
       signal(SIGINT, sig_sent);
       signal(SIGPIPE, sig_sent);
       /* curses takes care of ^Z */
       my_win.x_nlines = LINES / 2;
       my_win.x_ncols = COLS;
       my_win.x_win = newwin(my_win.x_nlines, my_win.x_ncols, 0, 0);
       scrollok(my_win.x_win, FALSE);
       wclear(my_win.x_win);

       his_win.x_nlines = LINES / 2 - 1;
       his_win.x_ncols = COLS;
       his_win.x_win = newwin(his_win.x_nlines, his_win.x_ncols,
           my_win.x_nlines+1, 0);
       scrollok(his_win.x_win, FALSE);
       wclear(his_win.x_win);

       line_win = newwin(1, COLS, my_win.x_nlines, 0);
       box(line_win, '-', '-');
       wrefresh(line_win);
       /* let them know we are working on it */
       current_state = "No connection yet";
}

/*
* Trade edit characters with the other talk. By agreement
* the first three characters each talk transmits after
* connection are the three edit characters.
*/
void
set_edit_chars(void)
{
       char buf[3];
       int cc;
       struct termios tty;

       tcgetattr(0, &tty);
       my_win.cerase = tty.c_cc[VERASE];
       my_win.kill = tty.c_cc[VKILL];
       if (tty.c_cc[VWERASE] == (unsigned char) -1)
               my_win.werase = '\027';  /* control W */
       else
               my_win.werase = tty.c_cc[VWERASE];
       buf[0] = my_win.cerase;
       buf[1] = my_win.kill;
       buf[2] = my_win.werase;
       cc = write(sockt, buf, sizeof(buf));
       if (cc != sizeof(buf) )
               p_error("Lost the connection");
       cc = read(sockt, buf, sizeof(buf));
       if (cc != sizeof(buf) )
               p_error("Lost the connection");
       his_win.cerase = buf[0];
       his_win.kill = buf[1];
       his_win.werase = buf[2];
}

void
sig_sent(int dummy)
{

       message("Connection closing. Exiting");
       quit();
}

/*
* All done talking...hang up the phone and reset terminal thingy's
*/
void
quit(void)
{

       if (curses_initialized) {
               wmove(his_win.x_win, his_win.x_nlines-1, 0);
               wclrtoeol(his_win.x_win);
               wrefresh(his_win.x_win);
               endwin();
       }
       if (invitation_waiting)
               send_delete();
       exit(0);
}