1 /*
2 * Copyright (c) 1983, 1993
3 * The Regents of the University of California. All rights reserved.
4 *
5 * %sccs.include.redist.c%
6 */
7
8 #ifndef lint
9 static char sccsid[] = "@(#)init_disp.c 8.2 (Berkeley) 02/16/94";
10 #endif /* not lint */
11
12 /*
13 * Initialization code for the display package,
14 * as well as the signal handling routines.
15 */
16
17 #include <sys/ioctl.h>
18 #include <sys/ioctl_compat.h>
19
20 #include <signal.h>
21 #include <err.h>
22 #include "talk.h"
23
24 /*
25 * Set up curses, catch the appropriate signals,
26 * and build the various windows.
27 */
init_display()28 init_display()
29 {
30 void sig_sent();
31 struct sigvec sigv;
32
33 if (initscr() == NULL)
34 errx(1, "Terminal type unset or lacking necessary features.");
35 (void) sigvec(SIGTSTP, (struct sigvec *)0, &sigv);
36 sigv.sv_mask |= sigmask(SIGALRM);
37 (void) sigvec(SIGTSTP, &sigv, (struct sigvec *)0);
38 curses_initialized = 1;
39 clear();
40 refresh();
41 noecho();
42 crmode();
43 signal(SIGINT, sig_sent);
44 signal(SIGPIPE, sig_sent);
45 /* curses takes care of ^Z */
46 my_win.x_nlines = LINES / 2;
47 my_win.x_ncols = COLS;
48 my_win.x_win = newwin(my_win.x_nlines, my_win.x_ncols, 0, 0);
49 scrollok(my_win.x_win, FALSE);
50 wclear(my_win.x_win);
51
52 his_win.x_nlines = LINES / 2 - 1;
53 his_win.x_ncols = COLS;
54 his_win.x_win = newwin(his_win.x_nlines, his_win.x_ncols,
55 my_win.x_nlines+1, 0);
56 scrollok(his_win.x_win, FALSE);
57 wclear(his_win.x_win);
58
59 line_win = newwin(1, COLS, my_win.x_nlines, 0);
60 box(line_win, '-', '-');
61 wrefresh(line_win);
62 /* let them know we are working on it */
63 current_state = "No connection yet";
64 }
65
66 /*
67 * Trade edit characters with the other talk. By agreement
68 * the first three characters each talk transmits after
69 * connection are the three edit characters.
70 */
set_edit_chars()71 set_edit_chars()
72 {
73 char buf[3];
74 int cc;
75 struct sgttyb tty;
76 struct ltchars ltc;
77
78 ioctl(0, TIOCGETP, &tty);
79 ioctl(0, TIOCGLTC, (struct sgttyb *)<c);
80 my_win.cerase = tty.sg_erase;
81 my_win.kill = tty.sg_kill;
82 if (ltc.t_werasc == (char) -1)
83 my_win.werase = '\027'; /* control W */
84 else
85 my_win.werase = ltc.t_werasc;
86 buf[0] = my_win.cerase;
87 buf[1] = my_win.kill;
88 buf[2] = my_win.werase;
89 cc = write(sockt, buf, sizeof(buf));
90 if (cc != sizeof(buf) )
91 p_error("Lost the connection");
92 cc = read(sockt, buf, sizeof(buf));
93 if (cc != sizeof(buf) )
94 p_error("Lost the connection");
95 his_win.cerase = buf[0];
96 his_win.kill = buf[1];
97 his_win.werase = buf[2];
98 }
99
100 void
sig_sent()101 sig_sent()
102 {
103
104 message("Connection closing. Exiting");
105 quit();
106 }
107
108 /*
109 * All done talking...hang up the phone and reset terminal thingy's
110 */
quit()111 quit()
112 {
113
114 if (curses_initialized) {
115 wmove(his_win.x_win, his_win.x_nlines-1, 0);
116 wclrtoeol(his_win.x_win);
117 wrefresh(his_win.x_win);
118 endwin();
119 }
120 if (invitation_waiting)
121 send_delete();
122 exit(0);
123 }
124