1/*
2 *  Licensed to the Apache Software Foundation (ASF) under one or more
3 *  contributor license agreements.  See the NOTICE file distributed with
4 *  this work for additional information regarding copyright ownership.
5 *  The ASF licenses this file to You under the Apache License, Version 2.0
6 *  (the "License"); you may not use this file except in compliance with
7 *  the License.  You may obtain a copy of the License at
8 *
9 *     http://www.apache.org/licenses/LICENSE-2.0
10 *
11 *  Unless required by applicable law or agreed to in writing, software
12 *  distributed under the License is distributed on an "AS IS" BASIS,
13 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 *  See the License for the specific language governing permissions and
15 *  limitations under the License.
16 */
17
18#define LOG_TAG "Console"
19
20#include "JNIHelp.h"
21#include "JniConstants.h"
22
23#include <errno.h>
24#include <termios.h>
25#include <unistd.h>
26
27static jint Console_setEchoImpl(JNIEnv* env, jclass, jboolean on, jint previousState) {
28    termios state;
29    if (TEMP_FAILURE_RETRY(tcgetattr(STDIN_FILENO, &state)) == -1) {
30        jniThrowIOException(env, errno);
31        return 0;
32    }
33    if (on) {
34        state.c_lflag = previousState;
35    } else {
36        previousState = state.c_lflag;
37        state.c_lflag &= ~(ECHO | ECHOE | ECHOK | ECHONL);
38    }
39    if (TEMP_FAILURE_RETRY(tcsetattr(STDIN_FILENO, TCSAFLUSH, &state)) == -1){
40        jniThrowIOException(env, errno);
41        return 0;
42    }
43    return previousState;
44}
45
46static JNINativeMethod gMethods[] = {
47    NATIVE_METHOD(Console, setEchoImpl, "(ZI)I"),
48};
49void register_java_io_Console(JNIEnv* env) {
50    jniRegisterNativeMethods(env, "java/io/Console", gMethods, NELEM(gMethods));
51}
52