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The LDAP Chai API, easy to use LDAP for Java developers.
There is a newer version: 0.8.7
/*
 * LDAP Chai API
 * Copyright (c) 2006-2017 Novell, Inc.
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */

package com.novell.ldapchai.util;

import com.novell.ldapchai.ChaiEntry;
import com.novell.ldapchai.ChaiPasswordPolicy;
import com.novell.ldapchai.ChaiPasswordRule;

import java.util.Collections;
import java.util.HashMap;
import java.util.Map;
import java.util.Set;

/**
 * Makes a basic password policy using default password rules.
 *
 * @author Jason D. Rivard
 */
public class DefaultChaiPasswordPolicy implements ChaiPasswordPolicy
{

    private final Map rules = makeDefaultRuleMap();

    private static Map makeDefaultRuleMap()
    {
        final Map rules = new HashMap<>();

        for ( final ChaiPasswordRule rule : ChaiPasswordRule.values() )
        {
            rules.put( rule.getKey(), rule.getDefaultValue() );
        }

        return rules;
    }

    public DefaultChaiPasswordPolicy()
    {
    }

    @Override
    public String getValue( final String key )
    {
        return rules.get( key );
    }

    @Override
    public String getValue( final ChaiPasswordRule rule )
    {
        return rules.get( rule.getKey() );
    }

    @Override
    public Set getKeys()
    {
        return Collections.unmodifiableSet( rules.keySet() );
    }

    @Override
    public PasswordRuleHelper getRuleHelper()
    {
        return new GenericRuleHelper( this );
    }

    public static com.novell.ldapchai.util.DefaultChaiPasswordPolicy createDefaultChaiPasswordPolicy( final Map rules )
    {
        final com.novell.ldapchai.util.DefaultChaiPasswordPolicy newPolicy = new com.novell.ldapchai.util.DefaultChaiPasswordPolicy();
        if ( rules != null )
        {
            newPolicy.rules.putAll( rules );
        }
        return newPolicy;
    }

    public static com.novell.ldapchai.util.DefaultChaiPasswordPolicy createDefaultChaiPasswordPolicyByRule( final Map rules )
    {
        final com.novell.ldapchai.util.DefaultChaiPasswordPolicy newPolicy = new com.novell.ldapchai.util.DefaultChaiPasswordPolicy();
        if ( rules != null )
        {
            for ( final Map.Entry entry : rules.entrySet() )
            {
                newPolicy.rules.put( entry.getKey().getKey(), entry.getValue() );
            }
        }
        return newPolicy;
    }

    public static com.novell.ldapchai.util.DefaultChaiPasswordPolicy createDefaultChaiPasswordPolicy()
    {
        return new com.novell.ldapchai.util.DefaultChaiPasswordPolicy();
    }

    public String toString()
    {
        return ChaiUtility.passwordPolicyToString( this );
    }

    @Override
    public ChaiEntry getPolicyEntry()
    {
        return null;
    }
}