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/*
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* This program is a part of the IoTa Project.
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*
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* Copyright © 2008-2012 Université de Caen Basse-Normandie, GREYC
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* Copyright © 2008-2012 Orange Labs
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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* <http://www.gnu.org/licenses/>
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*
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* See AUTHORS for a list of contributors.
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*/
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package fr.unicaen.iota.discovery.server.util;
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import fr.unicaen.iota.discovery.server.hibernate.User;
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import java.io.UnsupportedEncodingException;
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import java.security.NoSuchAlgorithmException;
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import java.util.HashMap;
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import java.util.Map;
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import org.apache.commons.logging.Log;
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import org.apache.commons.logging.LogFactory;
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public final class Session {
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private Session() {
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}
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private static final Log log = LogFactory.getLog(Session.class);
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private static final Map<String, User> sessions = new HashMap<String, User>();
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public static synchronized String openSession(User user) {
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log.debug("opening session for user " + user.getUserID());
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String sessionID;
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java.util.Date today = new java.util.Date();
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try {
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do {
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sessionID = MD5.MD5_Algo(Long.toString(today.getTime()) + user.getLogin() + (today.getTime() * Math.random())); // TODO add login+pass
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} while (sessions.containsKey(sessionID));
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} catch (NoSuchAlgorithmException e) {
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log.error(null, e);
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return null;
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} catch (UnsupportedEncodingException e) {
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log.error(null, e);
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return null;
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}
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sessions.put(sessionID, user);
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return sessionID;
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}
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public static synchronized boolean isValidSession(String sessionID) {
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return sessions.containsKey(sessionID);
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}
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public static synchronized void closeSession(String sessionID) {
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log.debug("closing session " + sessionID);
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sessions.remove(sessionID);
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}
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public static synchronized User getUser(String sessionID) {
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return sessions.get(sessionID);
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}
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}
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