Annotation of src/usr.bin/talk/init_disp.c, Revision 1.19
1.19 ! tedu 1: /* $OpenBSD: init_disp.c,v 1.18 2003/07/10 00:06:51 david 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.
1.16 millert 16: * 3. Neither the name of the University nor the names of its contributors
1.1 deraadt 17: * may be used to endorse or promote products derived from this software
18: * without specific prior written permission.
19: *
20: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
21: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
24: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30: * SUCH DAMAGE.
31: */
32:
33: #ifndef lint
34: #if 0
35: static char sccsid[] = "@(#)init_disp.c 8.2 (Berkeley) 2/16/94";
36: #endif
1.19 ! tedu 37: static const char rcsid[] = "$OpenBSD: init_disp.c,v 1.18 2003/07/10 00:06:51 david Exp $";
1.1 deraadt 38: #endif /* not lint */
39:
40: /*
41: * Initialization code for the display package,
42: * as well as the signal handling routines.
43: */
44:
1.4 pjanzen 45: #include "talk.h"
1.1 deraadt 46: #include <sys/ioctl.h>
47: #include <sys/ioctl_compat.h>
1.4 pjanzen 48: #include <err.h>
1.18 david 49: #include <stdlib.h>
1.1 deraadt 50: #include <termios.h>
1.4 pjanzen 51: #include <unistd.h>
1.1 deraadt 52:
1.5 millert 53: /*
1.1 deraadt 54: * Set up curses, catch the appropriate signals,
55: * and build the various windows.
56: */
1.4 pjanzen 57: void
1.17 deraadt 58: init_display(void)
1.1 deraadt 59: {
1.5 millert 60: struct sigaction sa;
1.1 deraadt 61:
62: if (initscr() == NULL)
63: errx(1, "Terminal type unset or lacking necessary features.");
1.5 millert 64: (void) sigaction(SIGTSTP, NULL, &sa);
65: sigaddset(&sa.sa_mask, SIGALRM);
66: (void) sigaction(SIGTSTP, &sa, NULL);
1.1 deraadt 67: curses_initialized = 1;
68: clear();
69: refresh();
70: noecho();
1.9 millert 71: cbreak();
1.1 deraadt 72: signal(SIGINT, sig_sent);
73: signal(SIGPIPE, sig_sent);
1.15 millert 74: signal(SIGWINCH, sig_winch);
1.1 deraadt 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);
1.14 millert 79: scrollok(my_win.x_win, smooth_scroll);
1.1 deraadt 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);
1.14 millert 86: scrollok(his_win.x_win, smooth_scroll);
1.1 deraadt 87: wclear(his_win.x_win);
88:
89: line_win = newwin(1, COLS, my_win.x_nlines, 0);
1.5 millert 90: #if defined(NCURSES_VERSION) || defined(whline)
1.2 tholo 91: whline(line_win, '-', COLS);
92: #else
1.1 deraadt 93: box(line_win, '-', '-');
1.2 tholo 94: #endif
1.1 deraadt 95: wrefresh(line_win);
96: /* let them know we are working on it */
97: current_state = "No connection yet";
98: }
99:
100: /*
101: * Trade edit characters with the other talk. By agreement
102: * the first three characters each talk transmits after
103: * connection are the three edit characters.
104: */
1.4 pjanzen 105: void
1.17 deraadt 106: set_edit_chars(void)
1.1 deraadt 107: {
1.6 deraadt 108: u_char buf[3];
1.1 deraadt 109: int cc;
110: struct termios tty;
111:
1.15 millert 112: tcgetattr(STDIN_FILENO, &tty);
1.7 millert 113: buf[0] = my_win.cerase = (tty.c_cc[VERASE] == (u_char)_POSIX_VDISABLE)
1.5 millert 114: ? CERASE : tty.c_cc[VERASE];
1.7 millert 115: buf[1] = my_win.kill = (tty.c_cc[VKILL] == (u_char)_POSIX_VDISABLE)
1.6 deraadt 116: ? CKILL : tty.c_cc[VKILL];
1.7 millert 117: buf[2] = my_win.werase = (tty.c_cc[VWERASE] == (u_char)_POSIX_VDISABLE)
1.5 millert 118: ? CWERASE : tty.c_cc[VWERASE];
1.1 deraadt 119: cc = write(sockt, buf, sizeof(buf));
120: if (cc != sizeof(buf) )
1.8 millert 121: quit("Lost the connection", 1);
1.1 deraadt 122: cc = read(sockt, buf, sizeof(buf));
123: if (cc != sizeof(buf) )
1.8 millert 124: quit("Lost the connection", 1);
1.1 deraadt 125: his_win.cerase = buf[0];
126: his_win.kill = buf[1];
127: his_win.werase = buf[2];
128: }
129:
130: void
1.17 deraadt 131: sig_sent(int dummy)
1.1 deraadt 132: {
133:
1.8 millert 134: quit("Connection closing. Exiting", 0);
1.1 deraadt 135: }
136:
1.15 millert 137: void
1.17 deraadt 138: sig_winch(int dummy)
1.15 millert 139: {
140:
141: gotwinch = 1;
142: }
143:
1.1 deraadt 144: /*
145: * All done talking...hang up the phone and reset terminal thingy's
146: */
1.4 pjanzen 147: void
1.17 deraadt 148: quit(char *warning, 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)
1.11 millert 161: warn("%s", warning);
1.8 millert 162: else
1.11 millert 163: warnx("%s", warning);
1.8 millert 164: }
1.1 deraadt 165: exit(0);
1.15 millert 166: }
167:
168: /*
169: * If we get SIGWINCH, recompute both window sizes and refresh things.
170: */
171: void
1.17 deraadt 172: resize_display(void)
1.15 millert 173: {
174: struct winsize ws;
175:
176: if (ioctl(STDIN_FILENO, TIOCGWINSZ, &ws) < 0 ||
177: (ws.ws_row == LINES && ws.ws_col == COLS))
178: return;
179:
180: /* Update curses' internal state with new window size. */
181: resizeterm(ws.ws_row, ws.ws_col);
182:
183: /*
184: * Resize each window but wait to refresh the screen until
185: * everything has been drawn so the cursor is in the right spot.
186: */
187: my_win.x_nlines = LINES / 2;
188: my_win.x_ncols = COLS;
189: wresize(my_win.x_win, my_win.x_nlines, my_win.x_ncols);
190: mvwin(my_win.x_win, 0, 0);
191: clearok(my_win.x_win, TRUE);
192:
193: his_win.x_nlines = LINES / 2 - 1;
194: his_win.x_ncols = COLS;
195: wresize(his_win.x_win, his_win.x_nlines, his_win.x_ncols);
196: mvwin(his_win.x_win, my_win.x_nlines + 1, 0);
197: clearok(his_win.x_win, TRUE);
198:
199: wresize(line_win, 1, COLS);
200: mvwin(line_win, my_win.x_nlines, 0);
201: #if defined(NCURSES_VERSION) || defined(whline)
202: whline(line_win, '-', COLS);
203: #else
204: wmove(line_win, my_win.x_nlines, 0);
205: box(line_win, '-', '-');
206: #endif
207:
208: /* Now redraw the screen. */
209: wrefresh(his_win.x_win);
210: wrefresh(line_win);
211: wrefresh(my_win.x_win);
1.1 deraadt 212: }
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