/*
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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 2015-2016 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.forgerock.i18n.slf4j.LocalizedLogger;
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import org.forgerock.opendj.config.server.ConfigChangeResult;
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import org.forgerock.opendj.config.server.ConfigException;
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import org.forgerock.opendj.ldap.ByteSequence;
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import org.forgerock.opendj.ldap.ByteString;
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import org.forgerock.opendj.ldap.ResultCode;
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import org.opends.server.admin.server.ConfigurationChangeListener;
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import org.opends.server.admin.std.server.BcryptPasswordStorageSchemeCfg;
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import org.opends.server.api.PasswordStorageScheme;
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import org.opends.server.types.DirectoryException;
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import org.opends.server.types.InitializationException;
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import java.util.List;
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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
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* encode values using the Blowfish reversible encryption algorithm. This
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* implementation supports only the user password syntax and not the auth
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* password syntax.
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*/
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public class BcryptPasswordStorageScheme
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extends PasswordStorageScheme<BcryptPasswordStorageSchemeCfg>
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implements ConfigurationChangeListener<BcryptPasswordStorageSchemeCfg>
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{
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private static final LocalizedLogger logger = LocalizedLogger.getLoggerForThisClass();
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private static final String CLASS_NAME = BcryptPasswordStorageScheme.class.getName();;
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/** The current configuration for this storage scheme. */
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private volatile BcryptPasswordStorageSchemeCfg config;
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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 {@link #initializePasswordStorageScheme(BcryptPasswordStorageSchemeCfg)} method.
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*/
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public BcryptPasswordStorageScheme()
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{
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}
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@Override
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public void initializePasswordStorageScheme(BcryptPasswordStorageSchemeCfg configuration)
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throws ConfigException, InitializationException
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{
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this.config = configuration;
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config.addBcryptChangeListener(this);
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}
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@Override
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public String getStorageSchemeName()
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{
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return STORAGE_SCHEME_NAME_BCRYPT;
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}
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@Override
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public boolean isConfigurationChangeAcceptable(BcryptPasswordStorageSchemeCfg configuration,
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List<LocalizableMessage> unacceptableReasons)
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{
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return true;
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}
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@Override
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public ConfigChangeResult applyConfigurationChange(BcryptPasswordStorageSchemeCfg configuration)
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{
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this.config = configuration;
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return new ConfigChangeResult();
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}
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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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String salt = BCrypt.gensalt(config.getBcryptCost());
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String hashed_password = BCrypt.hashpw(plaintext.toByteArray(), salt);
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return ByteString.valueOfUtf8(hashed_password);
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}
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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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return ByteString.valueOfUtf8('{' + getStorageSchemeName() + '}' + encodePassword(plaintext));
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}
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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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try
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{
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return BCrypt.checkpw(plaintextPassword.toString(), storedPassword.toString());
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}
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catch (IllegalArgumentException e)
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{
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logger.traceException(e);
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logger.error(ERR_PWSCHEME_INVALID_STORED_PASSWORD, e);
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return false;
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}
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}
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@Override
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public boolean isReversible()
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{
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return false;
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}
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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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LocalizableMessage message = ERR_PWSCHEME_NOT_REVERSIBLE.get(getStorageSchemeName());
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throw new DirectoryException(ResultCode.CONSTRAINT_VIOLATION, message);
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}
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@Override
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public boolean supportsAuthPasswordSyntax()
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{
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return false;
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}
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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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@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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return false;
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}
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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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@Override
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public boolean isStorageSchemeSecure()
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{
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return true;
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}
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}
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