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[] = "@(#)init_disp.c 5.4 (Berkeley) 6/1/90"; 36 #endif /* not lint */ 37 38 /* 39 * Initialization code for the display package, 40 * as well as the signal handling routines. 41 */ 42 43 #include "talk.h" 44 #include <signal.h> 45 46 /* 47 * Set up curses, catch the appropriate signals, 48 * and build the various windows. 49 */ 50 init_display() 51 { 52 void sig_sent(); 53 struct sigvec sigv; 54 55 initscr(); 56 (void) sigvec(SIGTSTP, (struct sigvec *)0, &sigv); 57 sigv.sv_mask |= sigmask(SIGALRM); 58 (void) sigvec(SIGTSTP, &sigv, (struct sigvec *)0); 59 curses_initialized = 1; 60 clear(); 61 refresh(); 62 noecho(); 63 crmode(); 64 signal(SIGINT, sig_sent); 65 signal(SIGPIPE, sig_sent); 66 /* curses takes care of ^Z */ 67 my_win.x_nlines = LINES / 2; 68 my_win.x_ncols = COLS; 69 my_win.x_win = newwin(my_win.x_nlines, my_win.x_ncols, 0, 0); 70 scrollok(my_win.x_win, FALSE); 71 wclear(my_win.x_win); 72 73 his_win.x_nlines = LINES / 2 - 1; 74 his_win.x_ncols = COLS; 75 his_win.x_win = newwin(his_win.x_nlines, his_win.x_ncols, 76 my_win.x_nlines+1, 0); 77 scrollok(his_win.x_win, FALSE); 78 wclear(his_win.x_win); 79 80 line_win = newwin(1, COLS, my_win.x_nlines, 0); 81 box(line_win, '-', '-'); 82 wrefresh(line_win); 83 /* let them know we are working on it */ 84 current_state = "No connection yet"; 85 } 86 87 /* 88 * Trade edit characters with the other talk. By agreement 89 * the first three characters each talk transmits after 90 * connection are the three edit characters. 91 */ 92 set_edit_chars() 93 { 94 char buf[3]; 95 int cc; 96 struct sgttyb tty; 97 struct ltchars ltc; 98 99 ioctl(0, TIOCGETP, &tty); 100 ioctl(0, TIOCGLTC, (struct sgttyb *)<c); 101 my_win.cerase = tty.sg_erase; 102 my_win.kill = tty.sg_kill; 103 if (ltc.t_werasc == (char) -1) 104 my_win.werase = '\027'; /* control W */ 105 else 106 my_win.werase = ltc.t_werasc; 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