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Java > Open Source Codes > com > mysql > jdbc > ExportControlled


1 /*
2  Copyright (C) 2002-2004 MySQL AB
3
4  This program is free software; you can redistribute it and/or modify
5  it under the terms of version 2 of the GNU General Public License as
6  published by the Free Software Foundation.
7
8  There are special exceptions to the terms and conditions of the GPL
9  as it is applied to this software. View the full text of the
10  exception in file EXCEPTIONS-CONNECTOR-J in the directory of this
11  software distribution.
12
13  This program is distributed in the hope that it will be useful,
14  but WITHOUT ANY WARRANTY; without even the implied warranty of
15  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16  GNU General Public License for more details.
17
18  You should have received a copy of the GNU General Public License
19  along with this program; if not, write to the Free Software
20  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
21
22
23
24  */
25 package com.mysql.jdbc;
26
27 import java.io.BufferedInputStream JavaDoc;
28 import java.io.BufferedOutputStream JavaDoc;
29 import java.io.IOException JavaDoc;
30
31 /**
32  * Holds functionality that falls under export-control regulations.
33  *
34  * @author Mark Matthews
35  *
36  * @version $Id: ExportControlled.java,v 1.1.2.1 2005/05/13 18:58:38 mmatthews
37  * Exp $
38  */
39 public class ExportControlled {
40     protected static boolean enabled() {
41         // we may wish to un-static-ify this class
42 // this static method call may be removed entirely by the compiler
43 return true;
44     }
45
46     /**
47      * Converts the socket being used in the given MysqlIO to an SSLSocket by
48      * performing the SSL/TLS handshake.
49      *
50      * @param mysqlIO
51      * the MysqlIO instance containing the socket to convert to an
52      * SSLSocket.
53      *
54      * @throws CommunicationsException
55      * if the handshake fails, or if this distribution of
56      * Connector/J doesn't contain the SSL crytpo hooks needed to
57      * perform the handshake.
58      */
59     protected static void transformSocketToSSLSocket(MysqlIO mysqlIO)
60             throws CommunicationsException {
61         javax.net.ssl.SSLSocketFactory sslFact = (javax.net.ssl.SSLSocketFactory) javax.net.ssl.SSLSocketFactory
62                 .getDefault();
63
64         try {
65             mysqlIO.mysqlConnection = sslFact.createSocket(
66                     mysqlIO.mysqlConnection, mysqlIO.host, mysqlIO.port, true);
67
68             // need to force TLSv1, or else JSSE tries to do a SSLv2 handshake
69 // which MySQL doesn't understand
70 ((javax.net.ssl.SSLSocket) mysqlIO.mysqlConnection)
71                     .setEnabledProtocols(new String JavaDoc[] { "TLSv1" }); //$NON-NLS-1$
72 ((javax.net.ssl.SSLSocket) mysqlIO.mysqlConnection)
73                     .startHandshake();
74
75             if (mysqlIO.connection.getUseUnbufferedInput()) {
76                 mysqlIO.mysqlInput = mysqlIO.mysqlConnection.getInputStream();
77             } else {
78                 mysqlIO.mysqlInput = new BufferedInputStream JavaDoc(
79                         mysqlIO.mysqlConnection.getInputStream(), 16384);
80             }
81
82             mysqlIO.mysqlOutput = new BufferedOutputStream JavaDoc(
83                     mysqlIO.mysqlConnection.getOutputStream(), 16384);
84
85             mysqlIO.mysqlOutput.flush();
86         } catch (IOException JavaDoc ioEx) {
87             throw new CommunicationsException(mysqlIO.connection,
88                     mysqlIO.lastPacketSentTimeMs, ioEx);
89         }
90     }
91
92     private ExportControlled() { /* prevent instantiation */
93     }
94 }
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