Annotation of src/usr.bin/talk/init_disp.c, Revision 1.2
1.1 deraadt 1: /* $NetBSD: init_disp.c,v 1.6 1994/12/09 02:14:17 jtc 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. All advertising materials mentioning features or use of this software
16: * must display the following acknowledgement:
17: * This product includes software developed by the University of
18: * California, Berkeley and its contributors.
19: * 4. Neither the name of the University nor the names of its contributors
20: * may be used to endorse or promote products derived from this software
21: * without specific prior written permission.
22: *
23: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
24: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
25: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
26: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
27: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
28: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
29: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
30: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
31: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
32: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33: * SUCH DAMAGE.
34: */
35:
36: #ifndef lint
37: #if 0
38: static char sccsid[] = "@(#)init_disp.c 8.2 (Berkeley) 2/16/94";
39: #endif
40: static char rcsid[] = "$NetBSD: init_disp.c,v 1.6 1994/12/09 02:14:17 jtc Exp $";
41: #endif /* not lint */
42:
43: /*
44: * Initialization code for the display package,
45: * as well as the signal handling routines.
46: */
47:
48: #include <sys/ioctl.h>
49: #include <sys/ioctl_compat.h>
50:
51: #include <termios.h>
52: #include <signal.h>
53: #include <err.h>
54: #include "talk.h"
55:
56: /*
57: * Set up curses, catch the appropriate signals,
58: * and build the various windows.
59: */
60: init_display()
61: {
62: void sig_sent();
63: struct sigvec sigv;
64:
65: if (initscr() == NULL)
66: errx(1, "Terminal type unset or lacking necessary features.");
67: (void) sigvec(SIGTSTP, (struct sigvec *)0, &sigv);
68: sigv.sv_mask |= sigmask(SIGALRM);
69: (void) sigvec(SIGTSTP, &sigv, (struct sigvec *)0);
70: curses_initialized = 1;
71: clear();
72: refresh();
73: noecho();
74: crmode();
75: signal(SIGINT, sig_sent);
76: signal(SIGPIPE, sig_sent);
77: /* curses takes care of ^Z */
78: my_win.x_nlines = LINES / 2;
79: my_win.x_ncols = COLS;
80: my_win.x_win = newwin(my_win.x_nlines, my_win.x_ncols, 0, 0);
81: scrollok(my_win.x_win, FALSE);
82: wclear(my_win.x_win);
83:
84: his_win.x_nlines = LINES / 2 - 1;
85: his_win.x_ncols = COLS;
86: his_win.x_win = newwin(his_win.x_nlines, his_win.x_ncols,
87: my_win.x_nlines+1, 0);
88: scrollok(his_win.x_win, FALSE);
89: wclear(his_win.x_win);
90:
91: line_win = newwin(1, COLS, my_win.x_nlines, 0);
1.2 ! tholo 92: #ifdef NCURSES_VERSION
! 93: whline(line_win, '-', COLS);
! 94: #else
1.1 deraadt 95: box(line_win, '-', '-');
1.2 ! tholo 96: #endif
1.1 deraadt 97: wrefresh(line_win);
98: /* let them know we are working on it */
99: current_state = "No connection yet";
100: }
101:
102: /*
103: * Trade edit characters with the other talk. By agreement
104: * the first three characters each talk transmits after
105: * connection are the three edit characters.
106: */
107: set_edit_chars()
108: {
109: char buf[3];
110: int cc;
111: struct termios tty;
112:
113: tcgetattr(0, &tty);
114: my_win.cerase = tty.c_cc[VERASE];
115: my_win.kill = tty.c_cc[VKILL];
116: if (tty.c_cc[VWERASE] == (unsigned char) -1)
117: my_win.werase = '\027'; /* control W */
118: else
119: my_win.werase = tty.c_cc[VWERASE];
120: buf[0] = my_win.cerase;
121: buf[1] = my_win.kill;
122: buf[2] = my_win.werase;
123: cc = write(sockt, buf, sizeof(buf));
124: if (cc != sizeof(buf) )
125: p_error("Lost the connection");
126: cc = read(sockt, buf, sizeof(buf));
127: if (cc != sizeof(buf) )
128: p_error("Lost the connection");
129: his_win.cerase = buf[0];
130: his_win.kill = buf[1];
131: his_win.werase = buf[2];
132: }
133:
134: void
135: sig_sent()
136: {
137:
138: message("Connection closing. Exiting");
139: quit();
140: }
141:
142: /*
143: * All done talking...hang up the phone and reset terminal thingy's
144: */
145: quit()
146: {
147:
148: if (curses_initialized) {
149: wmove(his_win.x_win, his_win.x_nlines-1, 0);
150: wclrtoeol(his_win.x_win);
151: wrefresh(his_win.x_win);
152: endwin();
153: }
154: if (invitation_waiting)
155: send_delete();
156: exit(0);
157: }
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