org.owasp.webgoat.session.DatabaseUtilities.java Source code

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Here is the source code for org.owasp.webgoat.session.DatabaseUtilities.java

Source

package org.owasp.webgoat.session;

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.SQLException;
import java.util.HashMap;
import java.util.Map;

import org.springframework.beans.factory.annotation.Autowired;

/**
 *************************************************************************************************
 *
 *
 * This file is part of WebGoat, an Open Web Application Security Project utility. For details,
 * please see http://www.owasp.org/
 *
 * Copyright (c) 2002 - 20014 Bruce Mayhew
 *
 * This program is free software; you can redistribute it and/or modify it under the terms of the
 * GNU General Public License as published by the Free Software Foundation; either version 2 of the
 * License, or (at your option) any later version.
 *
 * This program 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
 * General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License along with this program; if
 * not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
 * 02111-1307, USA.
 *
 * Getting Source ==============
 *
 * Source for this application is maintained at https://github.com/WebGoat/WebGoat, a repository for free software
 * projects.
 *
 * @author Jeff Williams <a href="http://www.aspectsecurity.com">Aspect Security</a>
 * @version $Id: $Id
 */
public class DatabaseUtilities {

    private static Map<String, Connection> connections = new HashMap<String, Connection>();
    private static Map<String, Boolean> dbBuilt = new HashMap<String, Boolean>();

    /**
     * <p>getConnection.</p>
     *
     * @param s a {@link org.owasp.webgoat.session.WebSession} object.
     * @return a {@link java.sql.Connection} object.
     * @throws java.sql.SQLException if any.
     */
    public static Connection getConnection(WebSession s) throws SQLException {
        return getConnection(s.getUserName(), s.getWebgoatContext());
    }

    /**
     * <p>getConnection.</p>
     *
     * @param user a {@link java.lang.String} object.
     * @param context a {@link org.owasp.webgoat.session.WebgoatContext} object.
     * @return a {@link java.sql.Connection} object.
     * @throws java.sql.SQLException if any.
     */
    public static synchronized Connection getConnection(String user, WebgoatContext context) throws SQLException {
        Connection conn = connections.get(user);
        if (conn != null && !conn.isClosed())
            return conn;
        conn = makeConnection(user, context);
        connections.put(user, conn);

        if (dbBuilt.get(user) == null) {
            new CreateDB().makeDB(conn);
            dbBuilt.put(user, Boolean.TRUE);
        }

        return conn;
    }

    /**
     * <p>returnConnection.</p>
     *
     * @param user a {@link java.lang.String} object.
     */
    public static synchronized void returnConnection(String user) {
        try {
            Connection connection = connections.get(user);
            if (connection == null || connection.isClosed())
                return;

            if (connection.getMetaData().getDatabaseProductName().toLowerCase().contains("oracle"))
                connection.close();
        } catch (SQLException sqle) {
            sqle.printStackTrace();
        }
    }

    private static Connection makeConnection(String user, WebgoatContext context) throws SQLException {
        try {
            Class.forName(context.getDatabaseDriver());

            if (context.getDatabaseConnectionString().contains("hsqldb"))
                return getHsqldbConnection(user, context);

            String userPrefix = context.getDatabaseUser();
            String password = context.getDatabasePassword();
            String url = context.getDatabaseConnectionString();
            return DriverManager.getConnection(url, userPrefix + "_" + user, password);
        } catch (ClassNotFoundException cnfe) {
            cnfe.printStackTrace();
            throw new SQLException("Couldn't load the database driver: " + cnfe.getLocalizedMessage());
        }
    }

    private static Connection getHsqldbConnection(String user, WebgoatContext context)
            throws ClassNotFoundException, SQLException {
        String url = context.getDatabaseConnectionString().replaceAll("\\$\\{USER\\}", user);
        return DriverManager.getConnection(url, "sa", "");
    }

}