Annotation of src/usr.bin/talk/init_disp.c, Revision 1.9
1.9 ! millert 1: /* $OpenBSD: init_disp.c,v 1.8 1999/03/03 20:43:30 millert Exp $ */
1.1 deraadt 2: /* $NetBSD: init_disp.c,v 1.6 1994/12/09 02:14:17 jtc Exp $ */
3:
4: /*
5: * Copyright (c) 1983, 1993
6: * The Regents of the University of California. All rights reserved.
7: *
8: * Redistribution and use in source and binary forms, with or without
9: * modification, are permitted provided that the following conditions
10: * are met:
11: * 1. Redistributions of source code must retain the above copyright
12: * notice, this list of conditions and the following disclaimer.
13: * 2. Redistributions in binary form must reproduce the above copyright
14: * notice, this list of conditions and the following disclaimer in the
15: * documentation and/or other materials provided with the distribution.
16: * 3. All advertising materials mentioning features or use of this software
17: * must display the following acknowledgement:
18: * This product includes software developed by the University of
19: * California, Berkeley and its contributors.
20: * 4. Neither the name of the University nor the names of its contributors
21: * may be used to endorse or promote products derived from this software
22: * without specific prior written permission.
23: *
24: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
25: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
28: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
29: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
30: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34: * SUCH DAMAGE.
35: */
36:
37: #ifndef lint
38: #if 0
39: static char sccsid[] = "@(#)init_disp.c 8.2 (Berkeley) 2/16/94";
40: #endif
1.9 ! millert 41: static char rcsid[] = "$OpenBSD: init_disp.c,v 1.8 1999/03/03 20:43:30 millert Exp $";
1.1 deraadt 42: #endif /* not lint */
43:
44: /*
45: * Initialization code for the display package,
46: * as well as the signal handling routines.
47: */
48:
1.4 pjanzen 49: #include "talk.h"
1.1 deraadt 50: #include <sys/ioctl.h>
51: #include <sys/ioctl_compat.h>
1.4 pjanzen 52: #include <err.h>
53: #include <signal.h>
1.1 deraadt 54: #include <termios.h>
1.4 pjanzen 55: #include <unistd.h>
1.1 deraadt 56:
1.5 millert 57: /*
1.1 deraadt 58: * Set up curses, catch the appropriate signals,
59: * and build the various windows.
60: */
1.4 pjanzen 61: void
1.1 deraadt 62: init_display()
63: {
1.5 millert 64: struct sigaction sa;
1.1 deraadt 65:
66: if (initscr() == NULL)
67: errx(1, "Terminal type unset or lacking necessary features.");
1.5 millert 68: (void) sigaction(SIGTSTP, NULL, &sa);
69: sigaddset(&sa.sa_mask, SIGALRM);
70: (void) sigaction(SIGTSTP, &sa, NULL);
1.1 deraadt 71: curses_initialized = 1;
72: clear();
73: refresh();
74: noecho();
1.9 ! millert 75: cbreak();
! 76: nl();
1.1 deraadt 77: signal(SIGINT, sig_sent);
78: signal(SIGPIPE, sig_sent);
79: /* curses takes care of ^Z */
80: my_win.x_nlines = LINES / 2;
81: my_win.x_ncols = COLS;
82: my_win.x_win = newwin(my_win.x_nlines, my_win.x_ncols, 0, 0);
83: scrollok(my_win.x_win, FALSE);
84: wclear(my_win.x_win);
85:
86: his_win.x_nlines = LINES / 2 - 1;
87: his_win.x_ncols = COLS;
88: his_win.x_win = newwin(his_win.x_nlines, his_win.x_ncols,
89: my_win.x_nlines+1, 0);
90: scrollok(his_win.x_win, FALSE);
91: wclear(his_win.x_win);
92:
93: line_win = newwin(1, COLS, my_win.x_nlines, 0);
1.5 millert 94: #if defined(NCURSES_VERSION) || defined(whline)
1.2 tholo 95: whline(line_win, '-', COLS);
96: #else
1.1 deraadt 97: box(line_win, '-', '-');
1.2 tholo 98: #endif
1.1 deraadt 99: wrefresh(line_win);
100: /* let them know we are working on it */
101: current_state = "No connection yet";
102: }
103:
104: /*
105: * Trade edit characters with the other talk. By agreement
106: * the first three characters each talk transmits after
107: * connection are the three edit characters.
108: */
1.4 pjanzen 109: void
1.1 deraadt 110: set_edit_chars()
111: {
1.6 deraadt 112: u_char buf[3];
1.1 deraadt 113: int cc;
114: struct termios tty;
115:
116: tcgetattr(0, &tty);
1.7 millert 117: buf[0] = my_win.cerase = (tty.c_cc[VERASE] == (u_char)_POSIX_VDISABLE)
1.5 millert 118: ? CERASE : tty.c_cc[VERASE];
1.7 millert 119: buf[1] = my_win.kill = (tty.c_cc[VKILL] == (u_char)_POSIX_VDISABLE)
1.6 deraadt 120: ? CKILL : tty.c_cc[VKILL];
1.7 millert 121: buf[2] = my_win.werase = (tty.c_cc[VWERASE] == (u_char)_POSIX_VDISABLE)
1.5 millert 122: ? CWERASE : tty.c_cc[VWERASE];
1.1 deraadt 123: cc = write(sockt, buf, sizeof(buf));
124: if (cc != sizeof(buf) )
1.8 millert 125: quit("Lost the connection", 1);
1.1 deraadt 126: cc = read(sockt, buf, sizeof(buf));
127: if (cc != sizeof(buf) )
1.8 millert 128: quit("Lost the connection", 1);
1.1 deraadt 129: his_win.cerase = buf[0];
130: his_win.kill = buf[1];
131: his_win.werase = buf[2];
132: }
133:
134: void
1.4 pjanzen 135: sig_sent(dummy)
136: int dummy;
1.1 deraadt 137: {
138:
1.8 millert 139: quit("Connection closing. Exiting", 0);
1.1 deraadt 140: }
141:
142: /*
143: * All done talking...hang up the phone and reset terminal thingy's
144: */
1.4 pjanzen 145: void
1.8 millert 146: quit(warning, do_perror)
147: char *warning;
148: int do_perror;
1.1 deraadt 149: {
150:
151: if (curses_initialized) {
152: wmove(his_win.x_win, his_win.x_nlines-1, 0);
153: wclrtoeol(his_win.x_win);
154: wrefresh(his_win.x_win);
155: endwin();
156: }
157: if (invitation_waiting)
158: send_delete();
1.8 millert 159: if (warning) {
160: if (do_perror)
161: warn(warning);
162: else
163: warnx(warning);
164: }
1.1 deraadt 165: exit(0);
166: }
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