/*
* Copyright 2010-2016 the original author or authors.
*
* 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
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.springframework.security.authentication.jaas.memory;
import java.util.Collections;
import java.util.Map;
import javax.security.auth.login.AppConfigurationEntry;
import javax.security.auth.login.Configuration;
import org.springframework.util.Assert;
/**
* <p>
* An in memory representation of a JAAS configuration. The constructor accepts a Map
* where the key represents the name of the login context name and the value is an Array
* of {@link AppConfigurationEntry} for that login context name. A default Array of
* {@link AppConfigurationEntry}s can be specified which will be returned if a login
* context is specified which is undefined.
* </p>
*
* @author Rob Winch
*/
public class InMemoryConfiguration extends Configuration {
// ~ Instance fields
// ================================================================================================
private final AppConfigurationEntry[] defaultConfiguration;
private final Map<String, AppConfigurationEntry[]> mappedConfigurations;
// ~ Constructors
// ===================================================================================================
/**
* Creates a new instance with only a defaultConfiguration. Any configuration name
* will result in defaultConfiguration being returned.
*
* @param defaultConfiguration The result for any calls to
* {@link #getAppConfigurationEntry(String)}. Can be <code>null</code>.
*/
public InMemoryConfiguration(AppConfigurationEntry[] defaultConfiguration) {
this(Collections.<String, AppConfigurationEntry[]>emptyMap(),
defaultConfiguration);
}
/**
* Creates a new instance with a mapping of login context name to an array of
* {@link AppConfigurationEntry}s.
*
* @param mappedConfigurations each key represents a login context name and each value
* is an Array of {@link AppConfigurationEntry}s that should be used.
*/
public InMemoryConfiguration(
Map<String, AppConfigurationEntry[]> mappedConfigurations) {
this(mappedConfigurations, null);
}
/**
* Creates a new instance with a mapping of login context name to an array of
* {@link AppConfigurationEntry}s along with a default configuration that will be used
* if no mapping is found for the given login context name.
*
* @param mappedConfigurations each key represents a login context name and each value
* is an Array of {@link AppConfigurationEntry}s that should be used.
* @param defaultConfiguration The result for any calls to
* {@link #getAppConfigurationEntry(String)}. Can be <code>null</code>.
*/
public InMemoryConfiguration(
Map<String, AppConfigurationEntry[]> mappedConfigurations,
AppConfigurationEntry[] defaultConfiguration) {
Assert.notNull(mappedConfigurations, "mappedConfigurations cannot be null.");
this.mappedConfigurations = mappedConfigurations;
this.defaultConfiguration = defaultConfiguration;
}
// ~ Methods
// ========================================================================================================
@Override
public AppConfigurationEntry[] getAppConfigurationEntry(String name) {
AppConfigurationEntry[] mappedResult = this.mappedConfigurations.get(name);
return mappedResult == null ? this.defaultConfiguration : mappedResult;
}
/**
* Does nothing, but required for JDK5
*/
@Override
public void refresh() {
}
}