207 lines
5.6 KiB
C
207 lines
5.6 KiB
C
/* $OpenBSD: init_disp.c,v 1.23 2019/06/28 13:35:04 deraadt Exp $ */
|
|
/* $NetBSD: init_disp.c,v 1.6 1994/12/09 02:14:17 jtc 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.
|
|
*/
|
|
|
|
/*
|
|
* Initialization code for the display package,
|
|
* as well as the signal handling routines.
|
|
*/
|
|
|
|
#include <sys/ioctl.h>
|
|
|
|
#include <err.h>
|
|
#include <stdlib.h>
|
|
#include <termios.h>
|
|
#include <unistd.h>
|
|
|
|
#include "talk.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);
|
|
signal(SIGWINCH, sig_winch);
|
|
/* 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, smooth_scroll);
|
|
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, smooth_scroll);
|
|
wclear(his_win.x_win);
|
|
|
|
line_win = newwin(1, COLS, my_win.x_nlines, 0);
|
|
#if defined(NCURSES_VERSION) || defined(whline)
|
|
whline(line_win, '-', COLS);
|
|
#else
|
|
box(line_win, '-', '-');
|
|
#endif
|
|
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)
|
|
{
|
|
u_char buf[3];
|
|
int cc;
|
|
struct termios tty;
|
|
|
|
tcgetattr(STDIN_FILENO, &tty);
|
|
buf[0] = my_win.cerase = (tty.c_cc[VERASE] == (u_char)_POSIX_VDISABLE)
|
|
? CERASE : tty.c_cc[VERASE];
|
|
buf[1] = my_win.kill = (tty.c_cc[VKILL] == (u_char)_POSIX_VDISABLE)
|
|
? CKILL : tty.c_cc[VKILL];
|
|
buf[2] = my_win.werase = (tty.c_cc[VWERASE] == (u_char)_POSIX_VDISABLE)
|
|
? CWERASE : tty.c_cc[VWERASE];
|
|
cc = write(sockt, buf, sizeof(buf));
|
|
if (cc != sizeof(buf) )
|
|
quit("Lost the connection", 1);
|
|
cc = read(sockt, buf, sizeof(buf));
|
|
if (cc != sizeof(buf) )
|
|
quit("Lost the connection", 1);
|
|
his_win.cerase = buf[0];
|
|
his_win.kill = buf[1];
|
|
his_win.werase = buf[2];
|
|
}
|
|
|
|
void
|
|
sig_sent(int dummy)
|
|
{
|
|
|
|
quit("Connection closing. Exiting", 0);
|
|
}
|
|
|
|
void
|
|
sig_winch(int dummy)
|
|
{
|
|
|
|
gotwinch = 1;
|
|
}
|
|
|
|
/*
|
|
* All done talking...hang up the phone and reset terminal thingy's
|
|
*/
|
|
void
|
|
quit(char *warning, int do_perror)
|
|
{
|
|
|
|
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();
|
|
if (warning) {
|
|
if (do_perror)
|
|
warn("%s", warning);
|
|
else
|
|
warnx("%s", warning);
|
|
}
|
|
exit(0);
|
|
}
|
|
|
|
/*
|
|
* If we get SIGWINCH, recompute both window sizes and refresh things.
|
|
*/
|
|
void
|
|
resize_display(void)
|
|
{
|
|
struct winsize ws;
|
|
|
|
if (ioctl(STDIN_FILENO, TIOCGWINSZ, &ws) == -1 ||
|
|
(ws.ws_row == LINES && ws.ws_col == COLS))
|
|
return;
|
|
|
|
/* Update curses' internal state with new window size. */
|
|
resizeterm(ws.ws_row, ws.ws_col);
|
|
|
|
/*
|
|
* Resize each window but wait to refresh the screen until
|
|
* everything has been drawn so the cursor is in the right spot.
|
|
*/
|
|
my_win.x_nlines = LINES / 2;
|
|
my_win.x_ncols = COLS;
|
|
wresize(my_win.x_win, my_win.x_nlines, my_win.x_ncols);
|
|
mvwin(my_win.x_win, 0, 0);
|
|
clearok(my_win.x_win, TRUE);
|
|
|
|
his_win.x_nlines = LINES / 2 - 1;
|
|
his_win.x_ncols = COLS;
|
|
wresize(his_win.x_win, his_win.x_nlines, his_win.x_ncols);
|
|
mvwin(his_win.x_win, my_win.x_nlines + 1, 0);
|
|
clearok(his_win.x_win, TRUE);
|
|
|
|
wresize(line_win, 1, COLS);
|
|
mvwin(line_win, my_win.x_nlines, 0);
|
|
#if defined(NCURSES_VERSION) || defined(whline)
|
|
whline(line_win, '-', COLS);
|
|
#else
|
|
wmove(line_win, my_win.x_nlines, 0);
|
|
box(line_win, '-', '-');
|
|
#endif
|
|
|
|
/* Now redraw the screen. */
|
|
wrefresh(his_win.x_win);
|
|
wrefresh(line_win);
|
|
wrefresh(my_win.x_win);
|
|
}
|