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init_disp.c (8874) init_disp.c (14443)
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

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48#include <unistd.h>
49#include <signal.h>
50#include <err.h>
51#include "talk.h"
52
53/*
54 * Make sure the callee can write to the screen
55 */
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

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48#include <unistd.h>
49#include <signal.h>
50#include <err.h>
51#include "talk.h"
52
53/*
54 * Make sure the callee can write to the screen
55 */
56void check_writeable()
56void
57check_writeable()
57{
58 char *tty;
59 struct stat sb;
60
61 if ((tty = ttyname(STDERR_FILENO)) == NULL)
62 err(1, "ttyname");
63 if (stat(tty, &sb) < 0)
64 err(1, "%s", tty);
65 if (!(sb.st_mode & S_IWGRP))
66 errx(1, "The callee cannot write to this terminal, use \"mesg y\".");
67}
68
69/*
70 * Set up curses, catch the appropriate signals,
71 * and build the various windows.
72 */
58{
59 char *tty;
60 struct stat sb;
61
62 if ((tty = ttyname(STDERR_FILENO)) == NULL)
63 err(1, "ttyname");
64 if (stat(tty, &sb) < 0)
65 err(1, "%s", tty);
66 if (!(sb.st_mode & S_IWGRP))
67 errx(1, "The callee cannot write to this terminal, use \"mesg y\".");
68}
69
70/*
71 * Set up curses, catch the appropriate signals,
72 * and build the various windows.
73 */
74void
73init_display()
74{
75init_display()
76{
75 void sig_sent();
76 struct sigvec sigv;
77
78 if (initscr() == NULL)
79 errx(1, "Terminal type unset or lacking necessary features.");
80 (void) sigvec(SIGTSTP, (struct sigvec *)0, &sigv);
81 sigv.sv_mask |= sigmask(SIGALRM);
82 (void) sigvec(SIGTSTP, &sigv, (struct sigvec *)0);
83 curses_initialized = 1;

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108 current_state = "No connection yet";
109}
110
111/*
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.
115 */
77 struct sigvec sigv;
78
79 if (initscr() == NULL)
80 errx(1, "Terminal type unset or lacking necessary features.");
81 (void) sigvec(SIGTSTP, (struct sigvec *)0, &sigv);
82 sigv.sv_mask |= sigmask(SIGALRM);
83 (void) sigvec(SIGTSTP, &sigv, (struct sigvec *)0);
84 curses_initialized = 1;

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109 current_state = "No connection yet";
110}
111
112/*
113 * Trade edit characters with the other talk. By agreement
114 * the first three characters each talk transmits after
115 * connection are the three edit characters.
116 */
117void
116set_edit_chars()
117{
118 char buf[3];
119 int cc;
120 struct sgttyb tty;
121 struct ltchars ltc;
122
123 ioctl(0, TIOCGETP, &tty);

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137 cc = read(sockt, buf, sizeof(buf));
138 if (cc != sizeof(buf) )
139 p_error("Lost the connection");
140 his_win.cerase = buf[0];
141 his_win.kill = buf[1];
142 his_win.werase = buf[2];
143}
144
118set_edit_chars()
119{
120 char buf[3];
121 int cc;
122 struct sgttyb tty;
123 struct ltchars ltc;
124
125 ioctl(0, TIOCGETP, &tty);

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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];
145}
146
147/* ARGSUSED */
145void
148void
146sig_sent()
149sig_sent(signo)
150 int signo;
147{
148
149 message("Connection closing. Exiting");
150 quit();
151}
152
153/*
154 * All done talking...hang up the phone and reset terminal thingy's
155 */
151{
152
153 message("Connection closing. Exiting");
154 quit();
155}
156
157/*
158 * All done talking...hang up the phone and reset terminal thingy's
159 */
160void
156quit()
157{
158
159 if (curses_initialized) {
160 wmove(his_win.x_win, his_win.x_nlines-1, 0);
161 wclrtoeol(his_win.x_win);
162 wrefresh(his_win.x_win);
163 endwin();
164 }
165 if (invitation_waiting)
166 send_delete();
167 exit(0);
168}
161quit()
162{
163
164 if (curses_initialized) {
165 wmove(his_win.x_win, his_win.x_nlines-1, 0);
166 wclrtoeol(his_win.x_win);
167 wrefresh(his_win.x_win);
168 endwin();
169 }
170 if (invitation_waiting)
171 send_delete();
172 exit(0);
173}