com.cubusmail.mail.SessionManager.java Source code

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Here is the source code for com.cubusmail.mail.SessionManager.java

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/* SessionManager.java
    
   Copyright (c) 2009 Juergen Schlierf, All Rights Reserved
       
   This file is part of Cubusmail (http://code.google.com/p/cubusmail/).
       
   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 3 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 Cubusmail. If not, see <http://www.gnu.org/licenses/>.
       
 */
package com.cubusmail.mail;

import java.util.Locale;
import java.util.TimeZone;

import javax.security.auth.Subject;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpSession;

import org.apache.commons.lang.LocaleUtils;

import com.cubusmail.gwtui.domain.Preferences;
import com.cubusmail.gwtui.domain.UserAccount;
import com.cubusmail.mail.security.SecurityUtils;

/**
 * Contains all Instances for a user session.
 * 
 * @author Juergen Schlierf
 */
public class SessionManager {

    private static final String SESSION_MANAGER_NAME = SessionManager.class.getName();

    private static ThreadLocal<HttpServletRequest> threadLocalRequest = new ThreadLocal<HttpServletRequest>();

    private MessageHandler currentComposeMessage;
    private Subject subject;

    /**
     * @param session
     * @return
     */
    public static SessionManager get(HttpSession session) {

        return (SessionManager) session.getAttribute(SESSION_MANAGER_NAME);
    }

    /**
     * @return
     */
    public static SessionManager get() {

        return (SessionManager) getHttpSession().getAttribute(SESSION_MANAGER_NAME);
    }

    public SessionManager(Subject subject) {

        this.subject = subject;
    }

    /**
     * @param request
     */
    public static void setRequest(HttpServletRequest request) {

        threadLocalRequest.set(request);
    }

    /**
     * create a new session and store the mailbox.
     * 
     * @param mailbox
     */
    public static void createSession(Subject subject) {

        if (getHttpSession() != null) {
            getHttpSession().invalidate();
        }

        createHttpSession().setAttribute(SESSION_MANAGER_NAME, new SessionManager(subject));
    }

    /**
     * Destroy session.
     */
    public static void invalidateSession() {

        getHttpSession().invalidate();
    }

    /**
     * Get mailbox
     * 
     * @return
     */
    public IMailbox getMailbox() {

        if (this.subject != null) {
            return SecurityUtils.getMailboxPrincipal(this.subject).getMailbox();
        }

        return null;
    }

    public Preferences getPreferences() {

        IMailbox mailbox = getMailbox();

        if (mailbox != null) {
            return mailbox.getUserAccount().getPreferences();
        } else {
            return null;
        }
    }

    public UserAccount getUserAccount() {

        IMailbox mailbox = getMailbox();

        if (mailbox != null) {
            return mailbox.getUserAccount();
        } else {
            return null;
        }
    }

    public void setUserAccount(UserAccount account) {

        IMailbox mailbox = getMailbox();

        if (mailbox != null) {
            mailbox.setUserAccount(account);
        }
    }

    /**
     * Is session valid?
     * 
     * @return
     */
    public static boolean isValid() {

        return getHttpSession() != null && getHttpSession().getAttribute(SESSION_MANAGER_NAME) != null;
    }

    /**
     * Is the user logged in?
     * 
     * @return
     */
    public static boolean isLoggedIn() {

        if (isValid()) {
            Subject subject = SessionManager.get().getSubject();
            if (subject != null && SecurityUtils.getMailboxPrincipal(subject) != null && get().getMailbox() != null
                    && get().getMailbox().isLoggedIn()) {
                return true;
            }
        }

        return false;
    }

    /**
     * get current http session
     * 
     * @return
     */
    private static HttpSession getHttpSession() {

        if (threadLocalRequest != null) {
            return threadLocalRequest.get().getSession(false);
        }

        return null;
    }

    /**
     * create a new http session
     * 
     * @return
     */
    private static HttpSession createHttpSession() {

        if (threadLocalRequest != null) {
            return threadLocalRequest.get().getSession(true);
        }

        return null;
    }

    /**
     * @return Returns the currentComposeMessage.
     */
    public MessageHandler getCurrentComposeMessage() {

        return this.currentComposeMessage;
    }

    /**
     * @param currentComposeMessage
     *            The currentComposeMessage to set.
     */
    public void setCurrentComposeMessage(MessageHandler currentComposeMessage) {

        this.currentComposeMessage = currentComposeMessage;
    }

    /**
     * @return Returns the subject.
     */
    public Subject getSubject() {

        return this.subject;
    }

    /**
     * @return
     */
    public Locale getLocale() {

        return LocaleUtils.toLocale(getUserAccount().getPreferences().getLanguage());
    }

    /**
     * @return
     */
    public TimeZone getTimeZone() {

        return TimeZone.getTimeZone(getUserAccount().getPreferences().getTimezone());
    }
}