169 lines
4.7 KiB
C
169 lines
4.7 KiB
C
/*
|
|
* 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. All advertising materials mentioning features or use of this software
|
|
* must display the following acknowledgement:
|
|
* This product includes software developed by the University of
|
|
* California, Berkeley and its contributors.
|
|
* 4. 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.
|
|
*/
|
|
|
|
#ifndef lint
|
|
static char sccsid[] = "@(#)init_disp.c 8.2 (Berkeley) 2/16/94";
|
|
#endif /* not lint */
|
|
|
|
/*
|
|
* Initialization code for the display package,
|
|
* as well as the signal handling routines.
|
|
*/
|
|
|
|
#include <sys/ioctl.h>
|
|
#include <sys/ioctl_compat.h>
|
|
#include <sys/types.h>
|
|
#include <sys/stat.h>
|
|
|
|
#include <unistd.h>
|
|
#include <signal.h>
|
|
#include <err.h>
|
|
#include "talk.h"
|
|
|
|
/*
|
|
* Make sure the callee can write to the screen
|
|
*/
|
|
void check_writeable()
|
|
{
|
|
char *tty;
|
|
struct stat sb;
|
|
|
|
if ((tty = ttyname(STDERR_FILENO)) == NULL)
|
|
err(1, "ttyname");
|
|
if (stat(tty, &sb) < 0)
|
|
err(1, "%s", tty);
|
|
if (!(sb.st_mode & S_IWGRP))
|
|
errx(1, "The callee cannot write to this terminal, use \"mesg y\".");
|
|
}
|
|
|
|
/*
|
|
* Set up curses, catch the appropriate signals,
|
|
* and build the various windows.
|
|
*/
|
|
init_display()
|
|
{
|
|
void sig_sent();
|
|
struct sigvec sigv;
|
|
|
|
if (initscr() == NULL)
|
|
errx(1, "Terminal type unset or lacking necessary features.");
|
|
(void) sigvec(SIGTSTP, (struct sigvec *)0, &sigv);
|
|
sigv.sv_mask |= sigmask(SIGALRM);
|
|
(void) sigvec(SIGTSTP, &sigv, (struct sigvec *)0);
|
|
curses_initialized = 1;
|
|
clear();
|
|
refresh();
|
|
noecho();
|
|
crmode();
|
|
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, TRUE);
|
|
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, TRUE);
|
|
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.
|
|
*/
|
|
set_edit_chars()
|
|
{
|
|
char buf[3];
|
|
int cc;
|
|
struct sgttyb tty;
|
|
struct ltchars ltc;
|
|
|
|
ioctl(0, TIOCGETP, &tty);
|
|
ioctl(0, TIOCGLTC, (struct sgttyb *)<c);
|
|
my_win.cerase = tty.sg_erase;
|
|
my_win.kill = tty.sg_kill;
|
|
if (ltc.t_werasc == (char) -1)
|
|
my_win.werase = '\027'; /* control W */
|
|
else
|
|
my_win.werase = ltc.t_werasc;
|
|
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()
|
|
{
|
|
|
|
message("Connection closing. Exiting");
|
|
quit();
|
|
}
|
|
|
|
/*
|
|
* All done talking...hang up the phone and reset terminal thingy's
|
|
*/
|
|
quit()
|
|
{
|
|
|
|
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);
|
|
}
|