org.wildfly.security.sasl.util.SortedMechanismSaslServerFactory Maven / Gradle / Ivy
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* Copyright 2016 Red Hat, Inc., and individual contributors
* as indicated by the @author tags.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
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* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
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* See the License for the specific language governing permissions and
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package org.wildfly.security.sasl.util;
import static org.wildfly.common.Assert.checkNotNullParam;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Comparator;
import java.util.List;
import java.util.Map;
import javax.security.sasl.SaslServerFactory;
import org.wildfly.security.sasl.SaslMechanismSelector;
/**
* A delegating {@link SaslServerFactory} which will sort the mechanism names using either a supplied {@link Comparator}<{@link String}>
* or a supplied ordering of mechanism names.
*
* @author Darran Lofthouse
*/
public class SortedMechanismSaslServerFactory extends AbstractDelegatingSaslServerFactory {
private final Comparator mechanismNameComparator;
private final SaslMechanismSelector saslMechanismSelector;
public SortedMechanismSaslServerFactory(final SaslServerFactory delegate, final Comparator mechanismNameComparator) {
super(delegate);
this.mechanismNameComparator = checkNotNullParam("mechanismComparator", mechanismNameComparator);
this.saslMechanismSelector = null;
}
public SortedMechanismSaslServerFactory(final SaslServerFactory delegate, final String... mechanismNames) {
super(delegate);
checkNotNullParam("mechanismNames", mechanismNames);
this.saslMechanismSelector = SaslMechanismSelector.NONE.addMechanisms(mechanismNames);
this.mechanismNameComparator = null;
}
@Override
public String[] getMechanismNames(Map props) {
String[] mechanismNames = super.getMechanismNames(props);
if (mechanismNameComparator != null) {
Arrays.sort(mechanismNames, mechanismNameComparator);
} else if (saslMechanismSelector != null) {
List mechanismNamesList = new ArrayList<>(Arrays.asList(mechanismNames));
mechanismNamesList = saslMechanismSelector.apply(mechanismNamesList, null);
mechanismNames = mechanismNamesList.toArray(new String[mechanismNamesList.size()]);
}
return mechanismNames;
}
}