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 27 static 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 46 static JNINativeMethod gMethods[] = { 47 NATIVE_METHOD(Console, setEchoImpl, "(ZI)I"), 48 }; 49 int register_java_io_Console(JNIEnv* env) { 50 return jniRegisterNativeMethods(env, "java/io/Console", gMethods, NELEM(gMethods)); 51 } 52
