/*
Copyright (c) 2012, Oracle and/or its affiliates. All rights reserved.
The MySQL Connector/J is licensed under the terms of the GPLv2
<http://www.gnu.org/licenses/old-licenses/gpl-2.0.html>, like most MySQL Connectors.
There are special exceptions to the terms and conditions of the GPLv2 as it is applied to
this software, see the FLOSS License Exception
<http://www.mysql.com/about/legal/licensing/foss-exception.html>.
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; version 2
of the License.
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., 51 Franklin St, Fifth
Floor, Boston, MA 02110-1301 USA
*/
package com.mysql.jdbc.authentication;
import java.io.UnsupportedEncodingException;
import java.security.NoSuchAlgorithmException;
import java.sql.SQLException;
import java.util.List;
import java.util.Properties;
import com.mysql.jdbc.AuthenticationPlugin;
import com.mysql.jdbc.Buffer;
import com.mysql.jdbc.Connection;
import com.mysql.jdbc.Messages;
import com.mysql.jdbc.SQLError;
import com.mysql.jdbc.Security;
/**
* MySQL Native Password Authentication Plugin
*
*/
public class MysqlNativePasswordPlugin implements AuthenticationPlugin {
private Connection connection;
private Properties properties;
private String password = null;
public void init(Connection conn, Properties props) throws SQLException {
this.connection = conn;
this.properties = props;
}
public void destroy() {
this.password = null;
}
public String getProtocolPluginName() {
return "mysql_native_password";
}
public boolean requiresConfidentiality() {
return false;
}
public boolean isReusable() {
return true;
}
public void setAuthenticationParameters(String user, String password) {
this.password = password;
}
public boolean nextAuthenticationStep(Buffer fromServer, List<Buffer> toServer) throws SQLException {
try {
toServer.clear();
Buffer bresp = null;
String pwd = this.password;
if (pwd == null) {
pwd = this.properties.getProperty("password");
}
if (fromServer == null || pwd == null || pwd.length() == 0) {
bresp = new Buffer(new byte[0]);
} else {
bresp = new Buffer(Security.scramble411(pwd, fromServer.readString(), this.connection));
}
toServer.add(bresp);
} catch (NoSuchAlgorithmException nse) {
throw SQLError.createSQLException(Messages.getString("MysqlIO.95") //$NON-NLS-1$
+Messages.getString("MysqlIO.96"), //$NON-NLS-1$
SQLError.SQL_STATE_GENERAL_ERROR, null);
} catch (UnsupportedEncodingException e) {
throw SQLError.createSQLException(Messages.getString("MysqlIO.95") //$NON-NLS-1$
+Messages.getString("MysqlIO.96"), //$NON-NLS-1$
SQLError.SQL_STATE_GENERAL_ERROR, null);
}
return true;
}
}