author | weijun |
Wed, 21 Oct 2009 08:17:35 +0800 | |
changeset 4152 | bc36a9f01ac6 |
parent 3624 | e214b718aeef |
child 5506 | 202f599c92aa |
permissions | -rw-r--r-- |
2 | 1 |
/* |
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6829785: TextCallbackHandler does not honor PasswordCallback.isEchoOn()
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* Copyright 2003-2009 Sun Microsystems, Inc. All Rights Reserved. |
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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* |
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* This code is free software; you can redistribute it and/or modify it |
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* under the terms of the GNU General Public License version 2 only, as |
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* published by the Free Software Foundation. Sun designates this |
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* particular file as subject to the "Classpath" exception as provided |
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* by Sun in the LICENSE file that accompanied this code. |
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* |
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* This code is distributed in the hope that it will be useful, but WITHOUT |
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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* version 2 for more details (a copy is included in the LICENSE file that |
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* accompanied this code). |
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* |
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* You should have received a copy of the GNU General Public License version |
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* 2 along with this work; if not, write to the Free Software Foundation, |
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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* |
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* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
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* CA 95054 USA or visit www.sun.com if you need additional information or |
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* have any questions. |
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*/ |
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package sun.security.util; |
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import java.io.*; |
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import java.nio.*; |
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import java.nio.charset.*; |
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import java.util.Arrays; |
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/** |
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* A utility class for reading passwords |
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* |
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*/ |
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public class Password { |
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/** Reads user password from given input stream. */ |
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public static char[] readPassword(InputStream in) throws IOException { |
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6829785: TextCallbackHandler does not honor PasswordCallback.isEchoOn()
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return readPassword(in, false); |
e214b718aeef
6829785: TextCallbackHandler does not honor PasswordCallback.isEchoOn()
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} |
e214b718aeef
6829785: TextCallbackHandler does not honor PasswordCallback.isEchoOn()
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parents:
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e214b718aeef
6829785: TextCallbackHandler does not honor PasswordCallback.isEchoOn()
weijun
parents:
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/** Reads user password from given input stream. |
e214b718aeef
6829785: TextCallbackHandler does not honor PasswordCallback.isEchoOn()
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parents:
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* @param isEchoOn true if the password should be echoed on the screen |
e214b718aeef
6829785: TextCallbackHandler does not honor PasswordCallback.isEchoOn()
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*/ |
e214b718aeef
6829785: TextCallbackHandler does not honor PasswordCallback.isEchoOn()
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public static char[] readPassword(InputStream in, boolean isEchoOn) |
e214b718aeef
6829785: TextCallbackHandler does not honor PasswordCallback.isEchoOn()
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throws IOException { |
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char[] consoleEntered = null; |
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byte[] consoleBytes = null; |
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try { |
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// Use the new java.io.Console class |
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Console con = null; |
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6829785: TextCallbackHandler does not honor PasswordCallback.isEchoOn()
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if (!isEchoOn && in == System.in && ((con = System.console()) != null)) { |
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consoleEntered = con.readPassword(); |
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// readPassword returns "" if you just print ENTER, |
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// to be compatible with old Password class, change to null |
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if (consoleEntered != null && consoleEntered.length == 0) { |
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return null; |
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} |
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consoleBytes = convertToBytes(consoleEntered); |
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in = new ByteArrayInputStream(consoleBytes); |
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} |
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// Rest of the lines still necessary for KeyStoreLoginModule |
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// and when there is no console. |
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char[] lineBuffer; |
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char[] buf; |
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int i; |
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buf = lineBuffer = new char[128]; |
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int room = buf.length; |
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int offset = 0; |
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int c; |
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boolean done = false; |
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while (!done) { |
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switch (c = in.read()) { |
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case -1: |
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case '\n': |
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done = true; |
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break; |
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case '\r': |
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int c2 = in.read(); |
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if ((c2 != '\n') && (c2 != -1)) { |
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if (!(in instanceof PushbackInputStream)) { |
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in = new PushbackInputStream(in); |
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} |
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((PushbackInputStream)in).unread(c2); |
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} else { |
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done = true; |
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break; |
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} |
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default: |
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if (--room < 0) { |
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buf = new char[offset + 128]; |
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room = buf.length - offset - 1; |
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System.arraycopy(lineBuffer, 0, buf, 0, offset); |
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Arrays.fill(lineBuffer, ' '); |
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lineBuffer = buf; |
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} |
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buf[offset++] = (char) c; |
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break; |
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} |
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} |
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if (offset == 0) { |
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return null; |
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} |
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char[] ret = new char[offset]; |
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System.arraycopy(buf, 0, ret, 0, offset); |
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Arrays.fill(buf, ' '); |
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return ret; |
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} finally { |
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if (consoleEntered != null) { |
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Arrays.fill(consoleEntered, ' '); |
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} |
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if (consoleBytes != null) { |
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Arrays.fill(consoleBytes, (byte)0); |
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} |
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} |
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} |
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/** |
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* Change a password read from Console.readPassword() into |
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* its original bytes. |
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* |
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* @param pass a char[] |
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* @return its byte[] format, similar to new String(pass).getBytes() |
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*/ |
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private static byte[] convertToBytes(char[] pass) { |
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if (enc == null) { |
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synchronized (Password.class) { |
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enc = sun.misc.SharedSecrets.getJavaIOAccess() |
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.charset() |
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.newEncoder() |
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.onMalformedInput(CodingErrorAction.REPLACE) |
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.onUnmappableCharacter(CodingErrorAction.REPLACE); |
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} |
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} |
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byte[] ba = new byte[(int)(enc.maxBytesPerChar() * pass.length)]; |
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ByteBuffer bb = ByteBuffer.wrap(ba); |
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synchronized (enc) { |
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enc.reset().encode(CharBuffer.wrap(pass), bb, true); |
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} |
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if (bb.position() < ba.length) { |
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ba[bb.position()] = '\n'; |
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} |
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return ba; |
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} |
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private static volatile CharsetEncoder enc; |
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} |