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
init_display(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
set_edit_chars(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
sig_sent(int dummy)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
quit(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