1 /* 2 * Copyright (c) 1983 Regents of the University of California. 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. All advertising materials mentioning features or use of this software 14 * must display the following acknowledgement: 15 * This product includes software developed by the University of 16 * California, Berkeley and its contributors. 17 * 4. Neither the name of the University nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 */ 33 34 #ifndef lint 35 /*static char sccsid[] = "from: @(#)init_disp.c 5.4 (Berkeley) 6/1/90";*/ 36 static char rcsid[] = "$Id: init_disp.c,v 1.3 1993/08/10 00:07:05 mycroft Exp $"; 37 #endif /* not lint */ 38 39 /* 40 * Initialization code for the display package, 41 * as well as the signal handling routines. 42 */ 43 44 #include "talk.h" 45 #include <signal.h> 46 #include <termios.h> 47 48 /* 49 * Set up curses, catch the appropriate signals, 50 * and build the various windows. 51 */ 52 init_display() 53 { 54 void sig_sent(); 55 struct sigvec sigv; 56 57 initscr(); 58 (void) sigvec(SIGTSTP, (struct sigvec *)0, &sigv); 59 sigv.sv_mask |= sigmask(SIGALRM); 60 (void) sigvec(SIGTSTP, &sigv, (struct sigvec *)0); 61 curses_initialized = 1; 62 clear(); 63 refresh(); 64 noecho(); 65 crmode(); 66 signal(SIGINT, sig_sent); 67 signal(SIGPIPE, sig_sent); 68 /* curses takes care of ^Z */ 69 my_win.x_nlines = LINES / 2; 70 my_win.x_ncols = COLS; 71 my_win.x_win = newwin(my_win.x_nlines, my_win.x_ncols, 0, 0); 72 scrollok(my_win.x_win, FALSE); 73 wclear(my_win.x_win); 74 75 his_win.x_nlines = LINES / 2 - 1; 76 his_win.x_ncols = COLS; 77 his_win.x_win = newwin(his_win.x_nlines, his_win.x_ncols, 78 my_win.x_nlines+1, 0); 79 scrollok(his_win.x_win, FALSE); 80 wclear(his_win.x_win); 81 82 line_win = newwin(1, COLS, my_win.x_nlines, 0); 83 box(line_win, '-', '-'); 84 wrefresh(line_win); 85 /* let them know we are working on it */ 86 current_state = "No connection yet"; 87 } 88 89 /* 90 * Trade edit characters with the other talk. By agreement 91 * the first three characters each talk transmits after 92 * connection are the three edit characters. 93 */ 94 set_edit_chars() 95 { 96 char buf[3]; 97 int cc; 98 struct termios tty; 99 100 tcgetattr(0, &tty); 101 my_win.cerase = tty.c_cc[VERASE]; 102 my_win.kill = tty.c_cc[VKILL]; 103 if (tty.c_cc[VWERASE] == (char) -1) 104 my_win.werase = '\027'; /* control W */ 105 else 106 my_win.werase = tty.c_cc[VWERASE]; 107 buf[0] = my_win.cerase; 108 buf[1] = my_win.kill; 109 buf[2] = my_win.werase; 110 cc = write(sockt, buf, sizeof(buf)); 111 if (cc != sizeof(buf) ) 112 p_error("Lost the connection"); 113 cc = read(sockt, buf, sizeof(buf)); 114 if (cc != sizeof(buf) ) 115 p_error("Lost the connection"); 116 his_win.cerase = buf[0]; 117 his_win.kill = buf[1]; 118 his_win.werase = buf[2]; 119 } 120 121 void 122 sig_sent() 123 { 124 125 message("Connection closing. Exiting"); 126 quit(); 127 } 128 129 /* 130 * All done talking...hang up the phone and reset terminal thingy's 131 */ 132 quit() 133 { 134 135 if (curses_initialized) { 136 wmove(his_win.x_win, his_win.x_nlines-1, 0); 137 wclrtoeol(his_win.x_win); 138 wrefresh(his_win.x_win); 139 endwin(); 140 } 141 if (invitation_waiting) 142 send_delete(); 143 exit(0); 144 } 145