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 1.5 1994/03/28 11:17:16 cgd 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 #include <stdio.h> 48 49 /* 50 * Set up curses, catch the appropriate signals, 51 * and build the various windows. 52 */ 53 init_display() 54 { 55 void sig_sent(); 56 struct sigvec sigv; 57 58 if (initscr() == NULL) { 59 printf("initscr failed: TERM is unset or unknown terminal type.\n"); 60 exit(-1); 61 } 62 (void) sigvec(SIGTSTP, (struct sigvec *)0, &sigv); 63 sigv.sv_mask |= sigmask(SIGALRM); 64 (void) sigvec(SIGTSTP, &sigv, (struct sigvec *)0); 65 curses_initialized = 1; 66 clear(); 67 refresh(); 68 noecho(); 69 crmode(); 70 signal(SIGINT, sig_sent); 71 signal(SIGPIPE, sig_sent); 72 /* curses takes care of ^Z */ 73 my_win.x_nlines = LINES / 2; 74 my_win.x_ncols = COLS; 75 my_win.x_win = newwin(my_win.x_nlines, my_win.x_ncols, 0, 0); 76 scrollok(my_win.x_win, FALSE); 77 wclear(my_win.x_win); 78 79 his_win.x_nlines = LINES / 2 - 1; 80 his_win.x_ncols = COLS; 81 his_win.x_win = newwin(his_win.x_nlines, his_win.x_ncols, 82 my_win.x_nlines+1, 0); 83 scrollok(his_win.x_win, FALSE); 84 wclear(his_win.x_win); 85 86 line_win = newwin(1, COLS, my_win.x_nlines, 0); 87 box(line_win, '-', '-'); 88 wrefresh(line_win); 89 /* let them know we are working on it */ 90 current_state = "No connection yet"; 91 } 92 93 /* 94 * Trade edit characters with the other talk. By agreement 95 * the first three characters each talk transmits after 96 * connection are the three edit characters. 97 */ 98 set_edit_chars() 99 { 100 char buf[3]; 101 int cc; 102 struct termios tty; 103 104 tcgetattr(0, &tty); 105 my_win.cerase = tty.c_cc[VERASE]; 106 my_win.kill = tty.c_cc[VKILL]; 107 if (tty.c_cc[VWERASE] == (unsigned char) -1) 108 my_win.werase = '\027'; /* control W */ 109 else 110 my_win.werase = tty.c_cc[VWERASE]; 111 buf[0] = my_win.cerase; 112 buf[1] = my_win.kill; 113 buf[2] = my_win.werase; 114 cc = write(sockt, buf, sizeof(buf)); 115 if (cc != sizeof(buf) ) 116 p_error("Lost the connection"); 117 cc = read(sockt, buf, sizeof(buf)); 118 if (cc != sizeof(buf) ) 119 p_error("Lost the connection"); 120 his_win.cerase = buf[0]; 121 his_win.kill = buf[1]; 122 his_win.werase = buf[2]; 123 } 124 125 void 126 sig_sent() 127 { 128 129 message("Connection closing. Exiting"); 130 quit(); 131 } 132 133 /* 134 * All done talking...hang up the phone and reset terminal thingy's 135 */ 136 quit() 137 { 138 139 if (curses_initialized) { 140 wmove(his_win.x_win, his_win.x_nlines-1, 0); 141 wclrtoeol(his_win.x_win); 142 wrefresh(his_win.x_win); 143 endwin(); 144 } 145 if (invitation_waiting) 146 send_delete(); 147 exit(0); 148 } 149