2 * Copyright (c) 1983, 1993
3 * The Regents of the University of California. All rights reserved.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
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. Neither the name of the University nor the names of its contributors
14 * may be used to endorse or promote products derived from this software
15 * without specific prior written permission.
17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 * @(#)init_disp.c 8.2 (Berkeley) 2/16/94
30 * $FreeBSD: src/usr.bin/talk/init_disp.c,v 1.11.2.1 2001/07/30 10:31:29 dd Exp $
34 * Initialization code for the display package,
35 * as well as the signal handling routines.
47 * Make sure the callee can write to the screen
55 if ((tty
= ttyname(STDERR_FILENO
)) == NULL
)
57 if (stat(tty
, &sb
) < 0)
59 if (!(sb
.st_mode
& S_IWGRP
))
60 errx(1, "The callee cannot write to this terminal, use \"mesg y\".");
64 * Set up curses, catch the appropriate signals,
65 * and build the various windows.
72 if (initscr() == NULL
)
73 errx(1, "Terminal type unset or lacking necessary features.");
74 (void) sigaction(SIGTSTP
, NULL
, &sa
);
75 sigaddset(&sa
.sa_mask
, SIGALRM
);
76 (void) sigaction(SIGTSTP
, &sa
, NULL
);
77 curses_initialized
= 1;
82 signal(SIGINT
, sig_sent
);
83 signal(SIGPIPE
, sig_sent
);
84 /* curses takes care of ^Z */
85 my_win
.x_nlines
= LINES
/ 2;
86 my_win
.x_ncols
= COLS
;
87 my_win
.x_win
= newwin(my_win
.x_nlines
, my_win
.x_ncols
, 0, 0);
88 idlok(my_win
.x_win
, TRUE
);
89 scrollok(my_win
.x_win
, TRUE
);
92 his_win
.x_nlines
= LINES
/ 2 - 1;
93 his_win
.x_ncols
= COLS
;
94 his_win
.x_win
= newwin(his_win
.x_nlines
, his_win
.x_ncols
,
95 my_win
.x_nlines
+1, 0);
96 idlok(my_win
.x_win
, TRUE
);
97 scrollok(his_win
.x_win
, TRUE
);
98 wclear(his_win
.x_win
);
100 line_win
= newwin(1, COLS
, my_win
.x_nlines
, 0);
101 #if defined(hline) || defined(whline) || defined(NCURSES_VERSION)
102 whline(line_win
, 0, COLS
);
104 box(line_win
, '-', '-');
107 /* let them know we are working on it */
108 current_state
= "No connection yet";
112 * Trade edit characters with the other talk. By agreement
113 * the first three characters each talk transmits after
114 * connection are the three edit characters.
124 my_win
.cerase
= tio
.c_cc
[VERASE
];
125 my_win
.kill
= tio
.c_cc
[VKILL
];
126 my_win
.werase
= tio
.c_cc
[VWERASE
];
127 if (my_win
.cerase
== (char)_POSIX_VDISABLE
)
128 my_win
.kill
= CERASE
;
129 if (my_win
.kill
== (char)_POSIX_VDISABLE
)
131 if (my_win
.werase
== (char)_POSIX_VDISABLE
)
132 my_win
.werase
= CWERASE
;
133 buf
[0] = my_win
.cerase
;
134 buf
[1] = my_win
.kill
;
135 buf
[2] = my_win
.werase
;
136 cc
= write(sockt
, buf
, sizeof(buf
));
137 if (cc
!= sizeof(buf
) )
138 p_error("Lost the connection");
139 cc
= read(sockt
, buf
, sizeof(buf
));
140 if (cc
!= sizeof(buf
) )
141 p_error("Lost the connection");
142 his_win
.cerase
= buf
[0];
143 his_win
.kill
= buf
[1];
144 his_win
.werase
= buf
[2];
149 sig_sent(int signo __unused
)
152 message("Connection closing. Exiting");
157 * All done talking...hang up the phone and reset terminal thingy's
163 if (curses_initialized
) {
164 wmove(his_win
.x_win
, his_win
.x_nlines
-1, 0);
165 wclrtoeol(his_win
.x_win
);
166 wrefresh(his_win
.x_win
);
169 if (invitation_waiting
)