1/*
2 * Copyright (c) 2005, 2006, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.  Oracle designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Oracle in the LICENSE file that accompanied this code.
10 *
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
23 * questions.
24 */
25
26#include "jni.h"
27#include "jni_util.h"
28#include "jvm.h"
29#include "java_io_Console.h"
30
31#include <stdlib.h>
32#include <unistd.h>
33#include <termios.h>
34
35JNIEXPORT jboolean JNICALL
36Java_java_io_Console_istty(JNIEnv *env, jclass cls)
37{
38    return isatty(fileno(stdin)) && isatty(fileno(stdout));
39}
40
41JNIEXPORT jstring JNICALL
42Java_java_io_Console_encoding(JNIEnv *env, jclass cls)
43{
44    return NULL;
45}
46
47JNIEXPORT jboolean JNICALL
48Java_java_io_Console_echo(JNIEnv *env,
49                          jclass cls,
50                          jboolean on)
51{
52    struct termios tio;
53    jboolean old;
54    int tty = fileno(stdin);
55    if (tcgetattr(tty, &tio) == -1) {
56        JNU_ThrowIOExceptionWithLastError(env, "tcgetattr failed");
57        return !on;
58    }
59    old = (tio.c_lflag & ECHO);
60    if (on) {
61        tio.c_lflag |= ECHO;
62    } else {
63        tio.c_lflag &= ~ECHO;
64    }
65    if (tcsetattr(tty, TCSANOW, &tio) == -1) {
66        JNU_ThrowIOExceptionWithLastError(env, "tcsetattr failed");
67    }
68    return old;
69}
70