1/*
2 * Copyright (c) 1983, 1993
3 * The Regents of the University of California. 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#include <sys/cdefs.h>
35
| 1/*
2 * Copyright (c) 1983, 1993
3 * The Regents of the University of California. 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#include <sys/cdefs.h>
35
|
36__FBSDID("$FreeBSD: head/usr.bin/talk/init_disp.c 128445 2004-04-19 21:37:29Z cognet $");
| 36__FBSDID("$FreeBSD: head/usr.bin/talk/init_disp.c 178642 2008-04-28 21:08:42Z delphij $");
|
37
38#ifndef lint
39static const char sccsid[] = "@(#)init_disp.c 8.2 (Berkeley) 2/16/94";
40#endif
41
42/*
43 * Initialization code for the display package,
44 * as well as the signal handling routines.
45 */
46
47#include <sys/stat.h>
48
49#include <err.h>
50#include <signal.h>
51#include <stdlib.h>
52#include <unistd.h>
53#include <termios.h>
54
55#include "talk.h"
56
57extern volatile sig_atomic_t gotwinch;
58
59/*
60 * Make sure the callee can write to the screen
61 */
62void
| 37
38#ifndef lint
39static const char sccsid[] = "@(#)init_disp.c 8.2 (Berkeley) 2/16/94";
40#endif
41
42/*
43 * Initialization code for the display package,
44 * as well as the signal handling routines.
45 */
46
47#include <sys/stat.h>
48
49#include <err.h>
50#include <signal.h>
51#include <stdlib.h>
52#include <unistd.h>
53#include <termios.h>
54
55#include "talk.h"
56
57extern volatile sig_atomic_t gotwinch;
58
59/*
60 * Make sure the callee can write to the screen
61 */
62void
|
63check_writeable()
| 63check_writeable(void)
|
64{
65 char *tty;
66 struct stat sb;
67
68 if ((tty = ttyname(STDERR_FILENO)) == NULL)
69 err(1, "ttyname");
70 if (stat(tty, &sb) < 0)
71 err(1, "%s", tty);
72 if (!(sb.st_mode & S_IWGRP))
73 errx(1, "The callee cannot write to this terminal, use \"mesg y\".");
74}
75
76/*
77 * Set up curses, catch the appropriate signals,
78 * and build the various windows.
79 */
80void
| 64{
65 char *tty;
66 struct stat sb;
67
68 if ((tty = ttyname(STDERR_FILENO)) == NULL)
69 err(1, "ttyname");
70 if (stat(tty, &sb) < 0)
71 err(1, "%s", tty);
72 if (!(sb.st_mode & S_IWGRP))
73 errx(1, "The callee cannot write to this terminal, use \"mesg y\".");
74}
75
76/*
77 * Set up curses, catch the appropriate signals,
78 * and build the various windows.
79 */
80void
|
81init_display()
| 81init_display(void)
|
82{
83 struct sigaction sa;
84
85 if (initscr() == NULL)
86 errx(1, "Terminal type unset or lacking necessary features.");
87 (void) sigaction(SIGTSTP, (struct sigaction *)0, &sa);
88 sigaddset(&sa.sa_mask, SIGALRM);
89 (void) sigaction(SIGTSTP, &sa, (struct sigaction *)0);
90 curses_initialized = 1;
91 clear();
92 refresh();
93 noecho();
94 crmode();
95 signal(SIGINT, sig_sent);
96 signal(SIGPIPE, sig_sent);
97 signal(SIGWINCH, sig_winch);
98 /* curses takes care of ^Z */
99 my_win.x_nlines = LINES / 2;
100 my_win.x_ncols = COLS;
101 my_win.x_win = newwin(my_win.x_nlines, my_win.x_ncols, 0, 0);
102 idlok(my_win.x_win, TRUE);
103 scrollok(my_win.x_win, TRUE);
104 wclear(my_win.x_win);
105
106 his_win.x_nlines = LINES / 2 - 1;
107 his_win.x_ncols = COLS;
108 his_win.x_win = newwin(his_win.x_nlines, his_win.x_ncols,
109 my_win.x_nlines+1, 0);
110 idlok(my_win.x_win, TRUE);
111 scrollok(his_win.x_win, TRUE);
112 wclear(his_win.x_win);
113
114 line_win = newwin(1, COLS, my_win.x_nlines, 0);
115#if defined(hline) || defined(whline) || defined(NCURSES_VERSION)
116 whline(line_win, 0, COLS);
117#else
118 box(line_win, '-', '-');
119#endif
120 wrefresh(line_win);
121 /* let them know we are working on it */
122 current_state = "No connection yet";
123}
124
125/*
126 * Trade edit characters with the other talk. By agreement
127 * the first three characters each talk transmits after
128 * connection are the three edit characters.
129 */
130void
| 82{
83 struct sigaction sa;
84
85 if (initscr() == NULL)
86 errx(1, "Terminal type unset or lacking necessary features.");
87 (void) sigaction(SIGTSTP, (struct sigaction *)0, &sa);
88 sigaddset(&sa.sa_mask, SIGALRM);
89 (void) sigaction(SIGTSTP, &sa, (struct sigaction *)0);
90 curses_initialized = 1;
91 clear();
92 refresh();
93 noecho();
94 crmode();
95 signal(SIGINT, sig_sent);
96 signal(SIGPIPE, sig_sent);
97 signal(SIGWINCH, sig_winch);
98 /* curses takes care of ^Z */
99 my_win.x_nlines = LINES / 2;
100 my_win.x_ncols = COLS;
101 my_win.x_win = newwin(my_win.x_nlines, my_win.x_ncols, 0, 0);
102 idlok(my_win.x_win, TRUE);
103 scrollok(my_win.x_win, TRUE);
104 wclear(my_win.x_win);
105
106 his_win.x_nlines = LINES / 2 - 1;
107 his_win.x_ncols = COLS;
108 his_win.x_win = newwin(his_win.x_nlines, his_win.x_ncols,
109 my_win.x_nlines+1, 0);
110 idlok(my_win.x_win, TRUE);
111 scrollok(his_win.x_win, TRUE);
112 wclear(his_win.x_win);
113
114 line_win = newwin(1, COLS, my_win.x_nlines, 0);
115#if defined(hline) || defined(whline) || defined(NCURSES_VERSION)
116 whline(line_win, 0, COLS);
117#else
118 box(line_win, '-', '-');
119#endif
120 wrefresh(line_win);
121 /* let them know we are working on it */
122 current_state = "No connection yet";
123}
124
125/*
126 * Trade edit characters with the other talk. By agreement
127 * the first three characters each talk transmits after
128 * connection are the three edit characters.
129 */
130void
|
131set_edit_chars()
| 131set_edit_chars(void)
|
132{
133 char buf[3];
134 int cc;
135 struct termios tio;
136
137 tcgetattr(0, &tio);
138 my_win.cerase = tio.c_cc[VERASE];
139 my_win.kill = tio.c_cc[VKILL];
140 my_win.werase = tio.c_cc[VWERASE];
141 if (my_win.cerase == (char)_POSIX_VDISABLE)
142 my_win.kill = CERASE;
143 if (my_win.kill == (char)_POSIX_VDISABLE)
144 my_win.kill = CKILL;
145 if (my_win.werase == (char)_POSIX_VDISABLE)
146 my_win.werase = CWERASE;
147 buf[0] = my_win.cerase;
148 buf[1] = my_win.kill;
149 buf[2] = my_win.werase;
150 cc = write(sockt, buf, sizeof(buf));
151 if (cc != sizeof(buf) )
152 p_error("Lost the connection");
153 cc = read(sockt, buf, sizeof(buf));
154 if (cc != sizeof(buf) )
155 p_error("Lost the connection");
156 his_win.cerase = buf[0];
157 his_win.kill = buf[1];
158 his_win.werase = buf[2];
159}
160
161/* ARGSUSED */
162void
| 132{
133 char buf[3];
134 int cc;
135 struct termios tio;
136
137 tcgetattr(0, &tio);
138 my_win.cerase = tio.c_cc[VERASE];
139 my_win.kill = tio.c_cc[VKILL];
140 my_win.werase = tio.c_cc[VWERASE];
141 if (my_win.cerase == (char)_POSIX_VDISABLE)
142 my_win.kill = CERASE;
143 if (my_win.kill == (char)_POSIX_VDISABLE)
144 my_win.kill = CKILL;
145 if (my_win.werase == (char)_POSIX_VDISABLE)
146 my_win.werase = CWERASE;
147 buf[0] = my_win.cerase;
148 buf[1] = my_win.kill;
149 buf[2] = my_win.werase;
150 cc = write(sockt, buf, sizeof(buf));
151 if (cc != sizeof(buf) )
152 p_error("Lost the connection");
153 cc = read(sockt, buf, sizeof(buf));
154 if (cc != sizeof(buf) )
155 p_error("Lost the connection");
156 his_win.cerase = buf[0];
157 his_win.kill = buf[1];
158 his_win.werase = buf[2];
159}
160
161/* ARGSUSED */
162void
|
163sig_sent(signo)
164 int signo __unused;
| 163sig_sent(int signo __unused)
|
165{
166
167 message("Connection closing. Exiting");
168 quit();
169}
170
171void
| 164{
165
166 message("Connection closing. Exiting");
167 quit();
168}
169
170void
|
172sig_winch(int dummy)
| 171sig_winch(int dummy __unused)
|
173{
174
175 gotwinch = 1;
176}
177
178/*
179 * All done talking...hang up the phone and reset terminal thingy's
180 */
181void
| 172{
173
174 gotwinch = 1;
175}
176
177/*
178 * All done talking...hang up the phone and reset terminal thingy's
179 */
180void
|
182quit()
| 181quit(void)
|
183{
184
185 if (curses_initialized) {
186 wmove(his_win.x_win, his_win.x_nlines-1, 0);
187 wclrtoeol(his_win.x_win);
188 wrefresh(his_win.x_win);
189 endwin();
190 }
191 if (invitation_waiting)
192 send_delete();
193 exit(0);
194}
195
196/*
197 * If we get SIGWINCH, recompute both window sizes and refresh things.
198 */
199void
200resize_display(void)
201{
202 struct winsize ws;
203
204 if (ioctl(STDIN_FILENO, TIOCGWINSZ, &ws) < 0 ||
205 (ws.ws_row == LINES && ws.ws_col == COLS))
206 return;
207
208 /* Update curses' internal state with new window size. */
209 resizeterm(ws.ws_row, ws.ws_col);
210
211 /*
212 * Resize each window but wait to refresh the screen until
213 * everything has been drawn so the cursor is in the right spot.
214 */
215 my_win.x_nlines = LINES / 2;
216 my_win.x_ncols = COLS;
217 wresize(my_win.x_win, my_win.x_nlines, my_win.x_ncols);
218 mvwin(my_win.x_win, 0, 0);
219 clearok(my_win.x_win, TRUE);
220
221 his_win.x_nlines = LINES / 2 - 1;
222 his_win.x_ncols = COLS;
223 wresize(his_win.x_win, his_win.x_nlines, his_win.x_ncols);
224 mvwin(his_win.x_win, my_win.x_nlines + 1, 0);
225 clearok(his_win.x_win, TRUE);
226
227 wresize(line_win, 1, COLS);
228 mvwin(line_win, my_win.x_nlines, 0);
229#if defined(NCURSES_VERSION) || defined(whline)
230 whline(line_win, '-', COLS);
231#else
232 wmove(line_win, my_win.x_nlines, 0);
233 box(line_win, '-', '-');
234#endif
235
236 /* Now redraw the screen. */
237 wrefresh(his_win.x_win);
238 wrefresh(line_win);
239 wrefresh(my_win.x_win);
240}
| 182{
183
184 if (curses_initialized) {
185 wmove(his_win.x_win, his_win.x_nlines-1, 0);
186 wclrtoeol(his_win.x_win);
187 wrefresh(his_win.x_win);
188 endwin();
189 }
190 if (invitation_waiting)
191 send_delete();
192 exit(0);
193}
194
195/*
196 * If we get SIGWINCH, recompute both window sizes and refresh things.
197 */
198void
199resize_display(void)
200{
201 struct winsize ws;
202
203 if (ioctl(STDIN_FILENO, TIOCGWINSZ, &ws) < 0 ||
204 (ws.ws_row == LINES && ws.ws_col == COLS))
205 return;
206
207 /* Update curses' internal state with new window size. */
208 resizeterm(ws.ws_row, ws.ws_col);
209
210 /*
211 * Resize each window but wait to refresh the screen until
212 * everything has been drawn so the cursor is in the right spot.
213 */
214 my_win.x_nlines = LINES / 2;
215 my_win.x_ncols = COLS;
216 wresize(my_win.x_win, my_win.x_nlines, my_win.x_ncols);
217 mvwin(my_win.x_win, 0, 0);
218 clearok(my_win.x_win, TRUE);
219
220 his_win.x_nlines = LINES / 2 - 1;
221 his_win.x_ncols = COLS;
222 wresize(his_win.x_win, his_win.x_nlines, his_win.x_ncols);
223 mvwin(his_win.x_win, my_win.x_nlines + 1, 0);
224 clearok(his_win.x_win, TRUE);
225
226 wresize(line_win, 1, COLS);
227 mvwin(line_win, my_win.x_nlines, 0);
228#if defined(NCURSES_VERSION) || defined(whline)
229 whline(line_win, '-', COLS);
230#else
231 wmove(line_win, my_win.x_nlines, 0);
232 box(line_win, '-', '-');
233#endif
234
235 /* Now redraw the screen. */
236 wrefresh(his_win.x_win);
237 wrefresh(line_win);
238 wrefresh(my_win.x_win);
239}
|