/* $OpenBSD: init_disp.c,v 1.18 2003/07/10 00:06:51 david 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. */ #ifndef lint #if 0 static char sccsid[] = "@(#)init_disp.c 8.2 (Berkeley) 2/16/94"; #endif static char rcsid[] = "$OpenBSD: init_disp.c,v 1.18 2003/07/10 00:06:51 david 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 <stdlib.h> #include <termios.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); 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) < 0 || (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); }