| /* |
| * Copyright (c) 2003, 2011, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. Oracle designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Oracle in the LICENSE file that accompanied this code. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| package sun.security.util; |
| |
| import java.io.*; |
| import java.nio.*; |
| import java.nio.charset.*; |
| import java.util.Arrays; |
| import jdk.internal.misc.SharedSecrets; |
| |
| /** |
| * A utility class for reading passwords |
| * |
| */ |
| public class Password { |
| /** Reads user password from given input stream. */ |
| public static char[] readPassword(InputStream in) throws IOException { |
| return readPassword(in, false); |
| } |
| |
| /** Reads user password from given input stream. |
| * @param isEchoOn true if the password should be echoed on the screen |
| */ |
| @SuppressWarnings("fallthrough") |
| public static char[] readPassword(InputStream in, boolean isEchoOn) |
| throws IOException { |
| |
| char[] consoleEntered = null; |
| byte[] consoleBytes = null; |
| |
| try { |
| // Use the new java.io.Console class |
| Console con = null; |
| if (!isEchoOn && in == System.in && ((con = System.console()) != null)) { |
| consoleEntered = con.readPassword(); |
| // readPassword returns "" if you just print ENTER, |
| // to be compatible with old Password class, change to null |
| if (consoleEntered != null && consoleEntered.length == 0) { |
| return null; |
| } |
| consoleBytes = convertToBytes(consoleEntered); |
| in = new ByteArrayInputStream(consoleBytes); |
| } |
| |
| // Rest of the lines still necessary for KeyStoreLoginModule |
| // and when there is no console. |
| |
| char[] lineBuffer; |
| char[] buf; |
| int i; |
| |
| buf = lineBuffer = new char[128]; |
| |
| int room = buf.length; |
| int offset = 0; |
| int c; |
| |
| boolean done = false; |
| while (!done) { |
| switch (c = in.read()) { |
| case -1: |
| case '\n': |
| done = true; |
| break; |
| |
| case '\r': |
| int c2 = in.read(); |
| if ((c2 != '\n') && (c2 != -1)) { |
| if (!(in instanceof PushbackInputStream)) { |
| in = new PushbackInputStream(in); |
| } |
| ((PushbackInputStream)in).unread(c2); |
| } else { |
| done = true; |
| break; |
| } |
| /* fall through */ |
| default: |
| if (--room < 0) { |
| buf = new char[offset + 128]; |
| room = buf.length - offset - 1; |
| System.arraycopy(lineBuffer, 0, buf, 0, offset); |
| Arrays.fill(lineBuffer, ' '); |
| lineBuffer = buf; |
| } |
| buf[offset++] = (char) c; |
| break; |
| } |
| } |
| |
| if (offset == 0) { |
| return null; |
| } |
| |
| char[] ret = new char[offset]; |
| System.arraycopy(buf, 0, ret, 0, offset); |
| Arrays.fill(buf, ' '); |
| |
| return ret; |
| } finally { |
| if (consoleEntered != null) { |
| Arrays.fill(consoleEntered, ' '); |
| } |
| if (consoleBytes != null) { |
| Arrays.fill(consoleBytes, (byte)0); |
| } |
| } |
| } |
| |
| /** |
| * Change a password read from Console.readPassword() into |
| * its original bytes. |
| * |
| * @param pass a char[] |
| * @return its byte[] format, similar to new String(pass).getBytes() |
| */ |
| private static byte[] convertToBytes(char[] pass) { |
| if (enc == null) { |
| synchronized (Password.class) { |
| enc = SharedSecrets.getJavaIOAccess() |
| .charset() |
| .newEncoder() |
| .onMalformedInput(CodingErrorAction.REPLACE) |
| .onUnmappableCharacter(CodingErrorAction.REPLACE); |
| } |
| } |
| byte[] ba = new byte[(int)(enc.maxBytesPerChar() * pass.length)]; |
| ByteBuffer bb = ByteBuffer.wrap(ba); |
| synchronized (enc) { |
| enc.reset().encode(CharBuffer.wrap(pass), bb, true); |
| } |
| if (bb.position() < ba.length) { |
| ba[bb.position()] = '\n'; |
| } |
| return ba; |
| } |
| private static volatile CharsetEncoder enc; |
| } |