/*
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* The contents of this file are subject to the terms of the Common Development and
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* Distribution License (the License). You may not use this file except in compliance with the
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* License.
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*
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* You can obtain a copy of the License at legal/CDDLv1.0.txt. See the License for the
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* specific language governing permission and limitations under the License.
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*
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* When distributing Covered Software, include this CDDL Header Notice in each file and include
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* the License file at legal/CDDLv1.0.txt. If applicable, add the following below the CDDL
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* Header, with the fields enclosed by brackets [] replaced by your own identifying
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* information: "Portions Copyright [year] [name of copyright owner]".
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*
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* Copyright 2006-2008 Sun Microsystems, Inc.
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* Portions Copyright 2014-2015 ForgeRock AS.
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*/
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package org.opends.server.extensions;
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import org.forgerock.i18n.LocalizableMessage;
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import org.opends.server.admin.std.server.Base64PasswordStorageSchemeCfg;
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import org.opends.server.api.PasswordStorageScheme;
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import org.forgerock.opendj.config.server.ConfigException;
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import org.forgerock.i18n.slf4j.LocalizedLogger;
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import org.opends.server.types.*;
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import org.forgerock.opendj.ldap.ResultCode;
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import org.forgerock.opendj.ldap.ByteString;
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import org.forgerock.opendj.ldap.ByteSequence;
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import org.opends.server.util.Base64;
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import static org.opends.messages.ExtensionMessages.*;
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import static org.opends.server.extensions.ExtensionsConstants.*;
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/**
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* This class defines a Directory Server password storage scheme that will store
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* the values in base64-encoded form. This is a reversible algorithm that
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* offers very little actual protection -- it will merely obscure the plaintext
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* value from the casual observer.
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*/
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public class Base64PasswordStorageScheme
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extends PasswordStorageScheme<Base64PasswordStorageSchemeCfg>
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{
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private static final LocalizedLogger logger = LocalizedLogger.getLoggerForThisClass();
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/**
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* Creates a new instance of this password storage scheme. Note that no
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* initialization should be performed here, as all initialization should be
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* done in the <CODE>initializePasswordStorageScheme</CODE> method.
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*/
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public Base64PasswordStorageScheme()
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{
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super();
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}
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/** {@inheritDoc} */
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@Override
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public void initializePasswordStorageScheme(
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Base64PasswordStorageSchemeCfg configuration)
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throws ConfigException, InitializationException
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{
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// No initialization is required.
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}
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/** {@inheritDoc} */
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@Override
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public String getStorageSchemeName()
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{
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return STORAGE_SCHEME_NAME_BASE64;
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}
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/** {@inheritDoc} */
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@Override
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public ByteString encodePassword(ByteSequence plaintext)
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throws DirectoryException
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{
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return ByteString.valueOfUtf8(Base64.encode(plaintext));
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}
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/** {@inheritDoc} */
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@Override
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public ByteString encodePasswordWithScheme(ByteSequence plaintext)
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throws DirectoryException
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{
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StringBuilder buffer = new StringBuilder();
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buffer.append('{');
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buffer.append(STORAGE_SCHEME_NAME_BASE64);
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buffer.append('}');
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buffer.append(Base64.encode(plaintext));
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return ByteString.valueOfUtf8(buffer);
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}
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/** {@inheritDoc} */
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@Override
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public boolean passwordMatches(ByteSequence plaintextPassword,
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ByteSequence storedPassword)
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{
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String userString = Base64.encode(plaintextPassword);
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String storedString = storedPassword.toString();
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return userString.equals(storedString);
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}
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/** {@inheritDoc} */
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@Override
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public boolean isReversible()
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{
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return true;
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}
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/** {@inheritDoc} */
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@Override
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public ByteString getPlaintextValue(ByteSequence storedPassword)
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throws DirectoryException
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{
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try
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{
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return ByteString.wrap(Base64.decode(storedPassword.toString()));
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}
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catch (Exception e)
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{
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logger.traceException(e);
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LocalizableMessage message = ERR_PWSCHEME_CANNOT_BASE64_DECODE_STORED_PASSWORD.get(
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storedPassword, e);
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throw new DirectoryException(ResultCode.INVALID_CREDENTIALS, message, e);
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}
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}
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/** {@inheritDoc} */
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@Override
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public boolean supportsAuthPasswordSyntax()
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{
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// This storage scheme does not support the authentication password syntax.
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return false;
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}
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/** {@inheritDoc} */
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@Override
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public ByteString encodeAuthPassword(ByteSequence plaintext)
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throws DirectoryException
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{
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LocalizableMessage message =
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ERR_PWSCHEME_DOES_NOT_SUPPORT_AUTH_PASSWORD.get(getStorageSchemeName());
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throw new DirectoryException(ResultCode.UNWILLING_TO_PERFORM, message);
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}
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/** {@inheritDoc} */
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@Override
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public boolean authPasswordMatches(ByteSequence plaintextPassword,
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String authInfo, String authValue)
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{
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// This storage scheme does not support the authentication password syntax.
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return false;
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}
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/** {@inheritDoc} */
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@Override
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public ByteString getAuthPasswordPlaintextValue(String authInfo,
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String authValue)
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throws DirectoryException
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{
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LocalizableMessage message =
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ERR_PWSCHEME_DOES_NOT_SUPPORT_AUTH_PASSWORD.get(getStorageSchemeName());
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throw new DirectoryException(ResultCode.UNWILLING_TO_PERFORM, message);
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}
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/** {@inheritDoc} */
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@Override
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public boolean isStorageSchemeSecure()
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{
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// Base64-encoded values may be easily decoded with no key or special
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// knowledge.
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return false;
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}
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}
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