/*
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* CDDL HEADER START
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*
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* The contents of this file are subject to the terms of the
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* Common Development and Distribution License, Version 1.0 only
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* (the "License"). You may not use this file except in compliance
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* with the License.
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*
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* You can obtain a copy of the license at legal-notices/CDDLv1_0.txt
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* or http://forgerock.org/license/CDDLv1.0.html.
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* See the License for the specific language governing permissions
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* and limitations under the License.
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*
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* When distributing Covered Code, include this CDDL HEADER in each
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* file and include the License file at legal-notices/CDDLv1_0.txt.
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* If applicable, add the following below this CDDL HEADER, with the
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* fields enclosed by brackets "[]" replaced with your own identifying
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* information:
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* Portions Copyright [yyyy] [name of copyright owner]
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*
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* CDDL HEADER END
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*
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*
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* Copyright 2006-2008 Sun Microsystems, Inc.
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*/
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package org.opends.server.extensions;
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import org.opends.messages.Message;
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import java.util.List;
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import java.util.Set;
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import org.opends.server.admin.server.ConfigurationChangeListener;
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import org.opends.server.admin.std.server.LengthBasedPasswordValidatorCfg;
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import org.opends.server.admin.std.server.PasswordValidatorCfg;
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import org.opends.server.api.PasswordValidator;
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import org.opends.server.config.ConfigException;
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import org.opends.server.types.*;
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import static org.opends.messages.ExtensionMessages.*;
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import org.opends.messages.MessageBuilder;
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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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/**
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* {@inheritDoc}
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*/
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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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Message 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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/**
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* {@inheritDoc}
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*/
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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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/**
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* {@inheritDoc}
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*/
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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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MessageBuilder 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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/**
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* {@inheritDoc}
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*/
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@Override()
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public boolean isConfigurationAcceptable(PasswordValidatorCfg configuration,
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List<Message> 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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/**
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* {@inheritDoc}
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*/
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public boolean isConfigurationChangeAcceptable(
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LengthBasedPasswordValidatorCfg configuration,
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List<Message> 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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Message 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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/**
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* {@inheritDoc}
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*/
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public ConfigChangeResult applyConfigurationChange(
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LengthBasedPasswordValidatorCfg configuration)
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{
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// We will always accept the proposed configuration if it's gotten to this
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// point.
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currentConfig = configuration;
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return new ConfigChangeResult(ResultCode.SUCCESS, false);
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}
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}
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