1 /* $NetBSD: init_disp.c,v 1.12 2011/09/06 18:32:03 joerg Exp $ */ 2 3 /* 4 * Copyright (c) 1983, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. Neither the name of the University nor the names of its contributors 16 * may be used to endorse or promote products derived from this software 17 * without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 */ 31 32 #include <sys/cdefs.h> 33 #ifndef lint 34 #if 0 35 static char sccsid[] = "@(#)init_disp.c 8.2 (Berkeley) 2/16/94"; 36 #endif 37 __RCSID("$NetBSD: init_disp.c,v 1.12 2011/09/06 18:32:03 joerg Exp $"); 38 #endif /* not lint */ 39 40 /* 41 * Initialization code for the display package, 42 * as well as the signal handling routines. 43 */ 44 45 #include "talk.h" 46 #include <sys/ioctl.h> 47 #include <sys/ioctl_compat.h> 48 #include <err.h> 49 #include <signal.h> 50 #include <termios.h> 51 #include <stdlib.h> 52 #include <unistd.h> 53 54 /* 55 * Set up curses, catch the appropriate signals, 56 * and build the various windows. 57 */ 58 void 59 init_display(void) 60 { 61 struct sigaction sa; 62 63 if (initscr() == NULL) 64 errx(1, "Terminal type unset or lacking necessary features."); 65 (void)sigaction(SIGTSTP, NULL, &sa); 66 sigaddset(&sa.sa_mask, SIGALRM); 67 (void)sigaction(SIGTSTP, &sa, NULL); 68 curses_initialized = 1; 69 clear(); 70 refresh(); 71 noecho(); 72 cbreak(); 73 signal(SIGINT, sig_sent); 74 signal(SIGPIPE, sig_sent); 75 /* curses takes care of ^Z */ 76 my_win.x_nlines = LINES / 2; 77 my_win.x_ncols = COLS; 78 my_win.x_win = newwin(my_win.x_nlines, my_win.x_ncols, 0, 0); 79 scrollok(my_win.x_win, FALSE); 80 wclear(my_win.x_win); 81 82 his_win.x_nlines = LINES / 2 - 1; 83 his_win.x_ncols = COLS; 84 his_win.x_win = newwin(his_win.x_nlines, his_win.x_ncols, 85 my_win.x_nlines+1, 0); 86 scrollok(his_win.x_win, FALSE); 87 wclear(his_win.x_win); 88 89 line_win = newwin(1, COLS, my_win.x_nlines, 0); 90 box(line_win, '-', '-'); 91 wrefresh(line_win); 92 /* let them know we are working on it */ 93 current_state = "No connection yet"; 94 } 95 96 /* 97 * Trade edit characters with the other talk. By agreement 98 * the first three characters each talk transmits after 99 * connection are the three edit characters. 100 */ 101 void 102 set_edit_chars(void) 103 { 104 char buf[3]; 105 int cc; 106 struct termios tty; 107 108 tcgetattr(0, &tty); 109 my_win.cerase = tty.c_cc[VERASE]; 110 my_win.kill = tty.c_cc[VKILL]; 111 if (tty.c_cc[VWERASE] == (unsigned char) -1) 112 my_win.werase = '\027'; /* control W */ 113 else 114 my_win.werase = tty.c_cc[VWERASE]; 115 buf[0] = my_win.cerase; 116 buf[1] = my_win.kill; 117 buf[2] = my_win.werase; 118 cc = write(sockt, buf, sizeof(buf)); 119 if (cc != sizeof(buf) ) 120 p_error("Lost the connection"); 121 cc = read(sockt, buf, sizeof(buf)); 122 if (cc != sizeof(buf) ) 123 p_error("Lost the connection"); 124 his_win.cerase = buf[0]; 125 his_win.kill = buf[1]; 126 his_win.werase = buf[2]; 127 } 128 129 void 130 sig_sent(int dummy) 131 { 132 133 message("Connection closing. Exiting"); 134 quit(); 135 } 136 137 /* 138 * All done talking...hang up the phone and reset terminal thingy's 139 */ 140 void 141 quit(void) 142 { 143 144 if (curses_initialized) { 145 wmove(his_win.x_win, his_win.x_nlines-1, 0); 146 wclrtoeol(his_win.x_win); 147 wrefresh(his_win.x_win); 148 endwin(); 149 } 150 if (invitation_waiting) 151 send_delete(); 152 exit(0); 153 } 154