1 /* $OpenBSD: init_disp.c,v 1.11 2000/06/30 16:00:21 millert Exp $ */ 2 /* $NetBSD: init_disp.c,v 1.6 1994/12/09 02:14:17 jtc Exp $ */ 3 4 /* 5 * Copyright (c) 1983, 1993 6 * The Regents of the University of California. All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. All advertising materials mentioning features or use of this software 17 * must display the following acknowledgement: 18 * This product includes software developed by the University of 19 * California, Berkeley and its contributors. 20 * 4. Neither the name of the University nor the names of its contributors 21 * may be used to endorse or promote products derived from this software 22 * without specific prior written permission. 23 * 24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 34 * SUCH DAMAGE. 35 */ 36 37 #ifndef lint 38 #if 0 39 static char sccsid[] = "@(#)init_disp.c 8.2 (Berkeley) 2/16/94"; 40 #endif 41 static char rcsid[] = "$OpenBSD: init_disp.c,v 1.11 2000/06/30 16:00:21 millert Exp $"; 42 #endif /* not lint */ 43 44 /* 45 * Initialization code for the display package, 46 * as well as the signal handling routines. 47 */ 48 49 #include "talk.h" 50 #include <sys/ioctl.h> 51 #include <sys/ioctl_compat.h> 52 #include <err.h> 53 #include <signal.h> 54 #include <termios.h> 55 #include <unistd.h> 56 57 /* 58 * Set up curses, catch the appropriate signals, 59 * and build the various windows. 60 */ 61 void 62 init_display() 63 { 64 struct sigaction sa; 65 66 if (initscr() == NULL) 67 errx(1, "Terminal type unset or lacking necessary features."); 68 (void) sigaction(SIGTSTP, NULL, &sa); 69 sigaddset(&sa.sa_mask, SIGALRM); 70 (void) sigaction(SIGTSTP, &sa, NULL); 71 curses_initialized = 1; 72 clear(); 73 refresh(); 74 noecho(); 75 cbreak(); 76 signal(SIGINT, sig_sent); 77 signal(SIGPIPE, sig_sent); 78 /* curses takes care of ^Z */ 79 my_win.x_nlines = LINES / 2; 80 my_win.x_ncols = COLS; 81 my_win.x_win = newwin(my_win.x_nlines, my_win.x_ncols, 0, 0); 82 scrollok(my_win.x_win, FALSE); 83 wclear(my_win.x_win); 84 85 his_win.x_nlines = LINES / 2 - 1; 86 his_win.x_ncols = COLS; 87 his_win.x_win = newwin(his_win.x_nlines, his_win.x_ncols, 88 my_win.x_nlines+1, 0); 89 scrollok(his_win.x_win, FALSE); 90 wclear(his_win.x_win); 91 92 line_win = newwin(1, COLS, my_win.x_nlines, 0); 93 #if defined(NCURSES_VERSION) || defined(whline) 94 whline(line_win, '-', COLS); 95 #else 96 box(line_win, '-', '-'); 97 #endif 98 wrefresh(line_win); 99 /* let them know we are working on it */ 100 current_state = "No connection yet"; 101 } 102 103 /* 104 * Trade edit characters with the other talk. By agreement 105 * the first three characters each talk transmits after 106 * connection are the three edit characters. 107 */ 108 void 109 set_edit_chars() 110 { 111 u_char buf[3]; 112 int cc; 113 struct termios tty; 114 115 tcgetattr(0, &tty); 116 buf[0] = my_win.cerase = (tty.c_cc[VERASE] == (u_char)_POSIX_VDISABLE) 117 ? CERASE : tty.c_cc[VERASE]; 118 buf[1] = my_win.kill = (tty.c_cc[VKILL] == (u_char)_POSIX_VDISABLE) 119 ? CKILL : tty.c_cc[VKILL]; 120 buf[2] = my_win.werase = (tty.c_cc[VWERASE] == (u_char)_POSIX_VDISABLE) 121 ? CWERASE : tty.c_cc[VWERASE]; 122 cc = write(sockt, buf, sizeof(buf)); 123 if (cc != sizeof(buf) ) 124 quit("Lost the connection", 1); 125 cc = read(sockt, buf, sizeof(buf)); 126 if (cc != sizeof(buf) ) 127 quit("Lost the connection", 1); 128 his_win.cerase = buf[0]; 129 his_win.kill = buf[1]; 130 his_win.werase = buf[2]; 131 } 132 133 void 134 sig_sent(dummy) 135 int dummy; 136 { 137 138 quit("Connection closing. Exiting", 0); 139 } 140 141 /* 142 * All done talking...hang up the phone and reset terminal thingy's 143 */ 144 void 145 quit(warning, do_perror) 146 char *warning; 147 int do_perror; 148 { 149 150 if (curses_initialized) { 151 wmove(his_win.x_win, his_win.x_nlines-1, 0); 152 wclrtoeol(his_win.x_win); 153 wrefresh(his_win.x_win); 154 endwin(); 155 } 156 if (invitation_waiting) 157 send_delete(); 158 if (warning) { 159 if (do_perror) 160 warn("%s", warning); 161 else 162 warnx("%s", warning); 163 } 164 exit(0); 165 } 166