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
35 JNIEXPORT jboolean JNICALL
Java_java_io_Console_istty(JNIEnv * env,jclass cls)36 Java_java_io_Console_istty(JNIEnv *env, jclass cls)
37 {
38 return isatty(fileno(stdin)) && isatty(fileno(stdout));
39 }
40
41 JNIEXPORT jstring JNICALL
Java_java_io_Console_encoding(JNIEnv * env,jclass cls)42 Java_java_io_Console_encoding(JNIEnv *env, jclass cls)
43 {
44 return NULL;
45 }
46
47 JNIEXPORT jboolean JNICALL
Java_java_io_Console_echo(JNIEnv * env,jclass cls,jboolean on)48 Java_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) != 0;
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