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spring-security-web

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/*
 * Copyright 2004, 2005, 2006 Acegi Technology Pty Limited
 *
 * 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
 *
 *      https://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.web.session;

import java.util.ArrayList;
import java.util.Enumeration;
import java.util.List;

import javax.servlet.http.HttpSession;

import org.springframework.security.core.context.SecurityContext;
import org.springframework.security.core.session.SessionDestroyedEvent;

/**
 * Published by the {@link HttpSessionEventPublisher} when a HttpSession is removed from
 * the container
 *
 * @author Ray Krueger
 * @author Luke Taylor
 * @author Rob Winch
 */
public class HttpSessionDestroyedEvent extends SessionDestroyedEvent {

	public HttpSessionDestroyedEvent(HttpSession session) {
		super(session);
	}

	public HttpSession getSession() {
		return (HttpSession) getSource();
	}

	@SuppressWarnings("unchecked")
	@Override
	public List getSecurityContexts() {
		HttpSession session = getSession();
		Enumeration attributes = session.getAttributeNames();
		ArrayList contexts = new ArrayList<>();
		while (attributes.hasMoreElements()) {
			String attributeName = attributes.nextElement();
			Object attributeValue = session.getAttribute(attributeName);
			if (attributeValue instanceof SecurityContext) {
				contexts.add((SecurityContext) attributeValue);
			}
		}
		return contexts;
	}

	@Override
	public String getId() {
		return getSession().getId();
	}

}