/*
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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 2014-2016 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 java.util.List;
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import java.util.Set;
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import org.forgerock.opendj.config.server.ConfigurationChangeListener;
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import org.forgerock.opendj.server.config.server.LengthBasedPasswordValidatorCfg;
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import org.forgerock.opendj.server.config.server.PasswordValidatorCfg;
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import org.opends.server.api.PasswordValidator;
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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.opends.server.types.*;
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import org.forgerock.opendj.ldap.ByteString;
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import static org.opends.messages.ExtensionMessages.*;
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import org.forgerock.i18n.LocalizableMessageBuilder;
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/**
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* This class provides a password validator that can ensure that the provided
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* password meets minimum and/or maximum length requirements.
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*/
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public class LengthBasedPasswordValidator extends
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PasswordValidator<LengthBasedPasswordValidatorCfg> implements
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ConfigurationChangeListener<LengthBasedPasswordValidatorCfg>
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{
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/** The current configuration for this password validator. */
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private LengthBasedPasswordValidatorCfg currentConfig;
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/**
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* Creates a new instance of this password validator.
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*/
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public LengthBasedPasswordValidator()
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{
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super();
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// All initialization must be done in the initializePasswordValidator
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// method.
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}
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/** {@inheritDoc} */
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@Override
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public void initializePasswordValidator(
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LengthBasedPasswordValidatorCfg configuration)
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throws ConfigException, InitializationException
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{
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configuration.addLengthBasedChangeListener(this);
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currentConfig = configuration;
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// Make sure that if both the maximum and minimum lengths are set, the
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// maximum length is greater than or equal to the minimum length.
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int maxLength = configuration.getMaxPasswordLength();
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int minLength = configuration.getMinPasswordLength();
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if (maxLength > 0 && minLength > 0 && minLength > maxLength)
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{
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LocalizableMessage message =
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ERR_PWLENGTHVALIDATOR_MIN_GREATER_THAN_MAX.get(minLength, maxLength);
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throw new ConfigException(message);
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}
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}
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/** {@inheritDoc} */
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@Override
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public void finalizePasswordValidator()
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{
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currentConfig.removeLengthBasedChangeListener(this);
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}
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/** {@inheritDoc} */
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@Override
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public boolean passwordIsAcceptable(ByteString newPassword,
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Set<ByteString> currentPasswords,
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Operation operation, Entry userEntry,
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LocalizableMessageBuilder invalidReason)
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{
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LengthBasedPasswordValidatorCfg config = currentConfig;
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int numChars = newPassword.toString().length();
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int minLength = config.getMinPasswordLength();
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if (minLength > 0 && numChars < minLength)
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{
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invalidReason.append(ERR_PWLENGTHVALIDATOR_TOO_SHORT.get(minLength));
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return false;
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}
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int maxLength = config.getMaxPasswordLength();
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if (maxLength > 0 && numChars > maxLength)
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{
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invalidReason.append(ERR_PWLENGTHVALIDATOR_TOO_LONG.get(maxLength));
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return false;
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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 boolean isConfigurationAcceptable(PasswordValidatorCfg configuration,
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List<LocalizableMessage> unacceptableReasons)
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{
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LengthBasedPasswordValidatorCfg config =
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(LengthBasedPasswordValidatorCfg) configuration;
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return isConfigurationChangeAcceptable(config, unacceptableReasons);
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}
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/** {@inheritDoc} */
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public boolean isConfigurationChangeAcceptable(
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LengthBasedPasswordValidatorCfg configuration,
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List<LocalizableMessage> unacceptableReasons)
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{
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// Make sure that if both the maximum and minimum lengths are set, the
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// maximum length is greater than or equal to the minimum length.
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int maxLength = configuration.getMaxPasswordLength();
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int minLength = configuration.getMinPasswordLength();
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if (maxLength > 0 && minLength > 0 && minLength > maxLength)
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{
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LocalizableMessage message = ERR_PWLENGTHVALIDATOR_MIN_GREATER_THAN_MAX.get(
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minLength, maxLength);
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unacceptableReasons.add(message);
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return false;
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}
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return true;
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}
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/** {@inheritDoc} */
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public ConfigChangeResult applyConfigurationChange(
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LengthBasedPasswordValidatorCfg configuration)
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{
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currentConfig = configuration;
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return new ConfigChangeResult();
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}
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}
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