org.jboss.jca.adapters.jdbc.extensions.mysql.MySQLReauthPlugin Maven / Gradle / Ivy
/*
* JBoss, Home of Professional Open Source.
* Copyright 2011, Red Hat Middleware LLC, and individual contributors
* as indicated by the @author tags. See the copyright.txt file in the
* distribution for a full listing of individual contributors.
*
* This 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 2.1 of
* the License, or (at your option) any later version.
*
* This software 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 this software; if not, write to the Free
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA, or see the FSF site: http://www.fsf.org.
*/
package org.jboss.jca.adapters.jdbc.extensions.mysql;
import org.jboss.jca.adapters.jdbc.spi.reauth.ReauthPlugin;
import java.lang.reflect.Method;
import java.sql.Connection;
import java.sql.SQLException;
/**
* MySQL plugin for reauthentication
*
* @author Jesper Pedersen
*/
public class MySQLReauthPlugin implements ReauthPlugin
{
/**
* Default constructor
*/
public MySQLReauthPlugin()
{
}
/**
* Initialize
* @param cl The class loader which can be used for initialization
* @exception SQLException Thrown in case of an error
*/
public synchronized void initialize(ClassLoader cl) throws SQLException
{
Class mysqlConnection = null;
try
{
mysqlConnection = Class.forName("com.mysql.jdbc.Connection", true, cl);
}
catch (Throwable t)
{
// Ignore
}
if (mysqlConnection == null)
{
try
{
mysqlConnection = Class.forName("com.mysql.jdbc.Connection", true, getClass().getClassLoader());
}
catch (Throwable t)
{
// Ignore
}
}
if (mysqlConnection == null)
{
try
{
ClassLoader tccl = SecurityActions.getThreadContextClassLoader();
mysqlConnection = Class.forName("com.mysql.jdbc.Connection", true, tccl);
}
catch (Throwable t)
{
throw new SQLException("Cannot resolve com.mysq.jdbc.Connection", t);
}
}
try
{
Method changeUser = mysqlConnection.getMethod("changeUser", new Class[] {String.class, String.class});
}
catch (Throwable t)
{
throw new SQLException("Cannot resolve com.mysq.jdbc.Connection changeUser method", t);
}
}
/**
* Reauthenticate
* @param c The connection
* @param userName The user name
* @param password The password
* @exception SQLException Thrown in case of an error
*/
public synchronized void reauthenticate(Connection c, String userName, String password) throws SQLException
{
Object[] params = new Object[] {userName, password};
try
{
Method changeUser = c.getClass().getMethod("changeUser", new Class[] {String.class, String.class});
changeUser.setAccessible(true);
changeUser.invoke(c, params);
}
catch (Throwable t)
{
Throwable cause = t.getCause();
if (cause instanceof SQLException)
{
throw (SQLException)cause;
}
else
{
throw new SQLException("Unexpected error in changeUser", t);
}
}
}
}