11590Srgrimes/* 21590Srgrimes * Copyright (c) 1983, 1993 31590Srgrimes * The Regents of the University of California. All rights reserved. 41590Srgrimes * 51590Srgrimes * Redistribution and use in source and binary forms, with or without 61590Srgrimes * modification, are permitted provided that the following conditions 71590Srgrimes * are met: 81590Srgrimes * 1. Redistributions of source code must retain the above copyright 91590Srgrimes * notice, this list of conditions and the following disclaimer. 101590Srgrimes * 2. Redistributions in binary form must reproduce the above copyright 111590Srgrimes * notice, this list of conditions and the following disclaimer in the 121590Srgrimes * documentation and/or other materials provided with the distribution. 131590Srgrimes * 4. Neither the name of the University nor the names of its contributors 141590Srgrimes * may be used to endorse or promote products derived from this software 151590Srgrimes * without specific prior written permission. 161590Srgrimes * 171590Srgrimes * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 181590Srgrimes * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 191590Srgrimes * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 201590Srgrimes * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 211590Srgrimes * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 221590Srgrimes * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 231590Srgrimes * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 241590Srgrimes * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 251590Srgrimes * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 261590Srgrimes * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 271590Srgrimes * SUCH DAMAGE. 281590Srgrimes */ 291590Srgrimes 3087710Smarkm#include <sys/cdefs.h> 3187710Smarkm 3287710Smarkm__FBSDID("$FreeBSD$"); 3387710Smarkm 341590Srgrimes#ifndef lint 3587710Smarkmstatic const char sccsid[] = "@(#)init_disp.c 8.2 (Berkeley) 2/16/94"; 3632503Scharnier#endif 371590Srgrimes 381590Srgrimes/* 391590Srgrimes * Initialization code for the display package, 401590Srgrimes * as well as the signal handling routines. 411590Srgrimes */ 421590Srgrimes 4387710Smarkm#include <sys/stat.h> 4487710Smarkm 4532503Scharnier#include <err.h> 4632503Scharnier#include <signal.h> 4778733Sdd#include <stdlib.h> 485297Sache#include <unistd.h> 4950636Speter#include <termios.h> 5087710Smarkm 511590Srgrimes#include "talk.h" 521590Srgrimes 538874Srgrimes/* 545297Sache * Make sure the callee can write to the screen 555297Sache */ 5614443Sjoergvoid 57178642Sdelphijcheck_writeable(void) 585297Sache{ 595297Sache char *tty; 605297Sache struct stat sb; 615297Sache 625297Sache if ((tty = ttyname(STDERR_FILENO)) == NULL) 635297Sache err(1, "ttyname"); 645297Sache if (stat(tty, &sb) < 0) 655297Sache err(1, "%s", tty); 665297Sache if (!(sb.st_mode & S_IWGRP)) 675297Sache errx(1, "The callee cannot write to this terminal, use \"mesg y\"."); 685297Sache} 695297Sache 708874Srgrimes/* 711590Srgrimes * Set up curses, catch the appropriate signals, 721590Srgrimes * and build the various windows. 731590Srgrimes */ 7414443Sjoergvoid 75178642Sdelphijinit_display(void) 761590Srgrimes{ 7717676Speter struct sigaction sa; 781590Srgrimes 791590Srgrimes if (initscr() == NULL) 801590Srgrimes errx(1, "Terminal type unset or lacking necessary features."); 8117676Speter (void) sigaction(SIGTSTP, (struct sigaction *)0, &sa); 8217676Speter sigaddset(&sa.sa_mask, SIGALRM); 8317676Speter (void) sigaction(SIGTSTP, &sa, (struct sigaction *)0); 841590Srgrimes curses_initialized = 1; 851590Srgrimes clear(); 861590Srgrimes refresh(); 871590Srgrimes noecho(); 881590Srgrimes crmode(); 891590Srgrimes signal(SIGINT, sig_sent); 901590Srgrimes signal(SIGPIPE, sig_sent); 91128445Scognet signal(SIGWINCH, sig_winch); 921590Srgrimes /* curses takes care of ^Z */ 931590Srgrimes my_win.x_nlines = LINES / 2; 941590Srgrimes my_win.x_ncols = COLS; 951590Srgrimes my_win.x_win = newwin(my_win.x_nlines, my_win.x_ncols, 0, 0); 9620988Speter idlok(my_win.x_win, TRUE); 972929Sache scrollok(my_win.x_win, TRUE); 981590Srgrimes wclear(my_win.x_win); 991590Srgrimes 1001590Srgrimes his_win.x_nlines = LINES / 2 - 1; 1011590Srgrimes his_win.x_ncols = COLS; 1021590Srgrimes his_win.x_win = newwin(his_win.x_nlines, his_win.x_ncols, 1031590Srgrimes my_win.x_nlines+1, 0); 10420988Speter idlok(my_win.x_win, TRUE); 1052929Sache scrollok(his_win.x_win, TRUE); 1061590Srgrimes wclear(his_win.x_win); 1071590Srgrimes 1081590Srgrimes line_win = newwin(1, COLS, my_win.x_nlines, 0); 10917698Speter#if defined(hline) || defined(whline) || defined(NCURSES_VERSION) 11017698Speter whline(line_win, 0, COLS); 11117698Speter#else 11217698Speter box(line_win, '-', '-'); 11317698Speter#endif 1141590Srgrimes wrefresh(line_win); 1151590Srgrimes /* let them know we are working on it */ 1161590Srgrimes current_state = "No connection yet"; 1171590Srgrimes} 1181590Srgrimes 1191590Srgrimes/* 1201590Srgrimes * Trade edit characters with the other talk. By agreement 1211590Srgrimes * the first three characters each talk transmits after 1221590Srgrimes * connection are the three edit characters. 1231590Srgrimes */ 12414443Sjoergvoid 125178642Sdelphijset_edit_chars(void) 1261590Srgrimes{ 1271590Srgrimes char buf[3]; 1281590Srgrimes int cc; 12917676Speter struct termios tio; 1308874Srgrimes 13117676Speter tcgetattr(0, &tio); 13217676Speter my_win.cerase = tio.c_cc[VERASE]; 13317676Speter my_win.kill = tio.c_cc[VKILL]; 13417676Speter my_win.werase = tio.c_cc[VWERASE]; 13517676Speter if (my_win.cerase == (char)_POSIX_VDISABLE) 13617676Speter my_win.kill = CERASE; 13717676Speter if (my_win.kill == (char)_POSIX_VDISABLE) 13817676Speter my_win.kill = CKILL; 13917676Speter if (my_win.werase == (char)_POSIX_VDISABLE) 14017676Speter my_win.werase = CWERASE; 1411590Srgrimes buf[0] = my_win.cerase; 1421590Srgrimes buf[1] = my_win.kill; 1431590Srgrimes buf[2] = my_win.werase; 1441590Srgrimes cc = write(sockt, buf, sizeof(buf)); 1451590Srgrimes if (cc != sizeof(buf) ) 1461590Srgrimes p_error("Lost the connection"); 1471590Srgrimes cc = read(sockt, buf, sizeof(buf)); 1481590Srgrimes if (cc != sizeof(buf) ) 1491590Srgrimes p_error("Lost the connection"); 1501590Srgrimes his_win.cerase = buf[0]; 1511590Srgrimes his_win.kill = buf[1]; 1521590Srgrimes his_win.werase = buf[2]; 1531590Srgrimes} 1541590Srgrimes 15514443Sjoerg/* ARGSUSED */ 1561590Srgrimesvoid 157178642Sdelphijsig_sent(int signo __unused) 1581590Srgrimes{ 1591590Srgrimes 1601590Srgrimes message("Connection closing. Exiting"); 1611590Srgrimes quit(); 1621590Srgrimes} 1631590Srgrimes 164128445Scognetvoid 165178642Sdelphijsig_winch(int dummy __unused) 166128445Scognet{ 167128445Scognet 168128445Scognet gotwinch = 1; 169128445Scognet} 170128445Scognet 1711590Srgrimes/* 1721590Srgrimes * All done talking...hang up the phone and reset terminal thingy's 1731590Srgrimes */ 17414443Sjoergvoid 175178642Sdelphijquit(void) 1761590Srgrimes{ 1771590Srgrimes 1781590Srgrimes if (curses_initialized) { 1791590Srgrimes wmove(his_win.x_win, his_win.x_nlines-1, 0); 1801590Srgrimes wclrtoeol(his_win.x_win); 1811590Srgrimes wrefresh(his_win.x_win); 1821590Srgrimes endwin(); 1831590Srgrimes } 1841590Srgrimes if (invitation_waiting) 1851590Srgrimes send_delete(); 1861590Srgrimes exit(0); 1871590Srgrimes} 188128445Scognet 189128445Scognet/* 190128445Scognet * If we get SIGWINCH, recompute both window sizes and refresh things. 191128445Scognet */ 192128445Scognetvoid 193128445Scognetresize_display(void) 194128445Scognet{ 195128445Scognet struct winsize ws; 196128445Scognet 197128445Scognet if (ioctl(STDIN_FILENO, TIOCGWINSZ, &ws) < 0 || 198128445Scognet (ws.ws_row == LINES && ws.ws_col == COLS)) 199128445Scognet return; 200128445Scognet 201128445Scognet /* Update curses' internal state with new window size. */ 202128445Scognet resizeterm(ws.ws_row, ws.ws_col); 203128445Scognet 204128445Scognet /* 205128445Scognet * Resize each window but wait to refresh the screen until 206128445Scognet * everything has been drawn so the cursor is in the right spot. 207128445Scognet */ 208128445Scognet my_win.x_nlines = LINES / 2; 209128445Scognet my_win.x_ncols = COLS; 210128445Scognet wresize(my_win.x_win, my_win.x_nlines, my_win.x_ncols); 211128445Scognet mvwin(my_win.x_win, 0, 0); 212128445Scognet clearok(my_win.x_win, TRUE); 213128445Scognet 214128445Scognet his_win.x_nlines = LINES / 2 - 1; 215128445Scognet his_win.x_ncols = COLS; 216128445Scognet wresize(his_win.x_win, his_win.x_nlines, his_win.x_ncols); 217128445Scognet mvwin(his_win.x_win, my_win.x_nlines + 1, 0); 218128445Scognet clearok(his_win.x_win, TRUE); 219128445Scognet 220128445Scognet wresize(line_win, 1, COLS); 221128445Scognet mvwin(line_win, my_win.x_nlines, 0); 222128445Scognet#if defined(NCURSES_VERSION) || defined(whline) 223128445Scognet whline(line_win, '-', COLS); 224128445Scognet#else 225128445Scognet wmove(line_win, my_win.x_nlines, 0); 226128445Scognet box(line_win, '-', '-'); 227128445Scognet#endif 228128445Scognet 229128445Scognet /* Now redraw the screen. */ 230128445Scognet wrefresh(his_win.x_win); 231128445Scognet wrefresh(line_win); 232128445Scognet wrefresh(my_win.x_win); 233128445Scognet} 234