| 1 | /* SslRMIClientSocketFactory.java -- |
| 2 | Copyright (C) 2006 Free Software Foundation |
| 3 | |
| 4 | This file is part of GNU Classpath. |
| 5 | |
| 6 | GNU Classpath is free software; you can redistribute it and/or modify |
| 7 | it under the terms of the GNU General Public License as published by |
| 8 | the Free Software Foundation; either version 2, or (at your option) |
| 9 | any later version. |
| 10 | |
| 11 | GNU Classpath is distributed in the hope that it will be useful, but |
| 12 | WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 14 | General Public License for more details. |
| 15 | |
| 16 | You should have received a copy of the GNU General Public License |
| 17 | along with GNU Classpath; see the file COPYING. If not, write to the |
| 18 | Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA |
| 19 | 02110-1301 USA. |
| 20 | |
| 21 | Linking this library statically or dynamically with other modules is |
| 22 | making a combined work based on this library. Thus, the terms and |
| 23 | conditions of the GNU General Public License cover the whole |
| 24 | combination. |
| 25 | |
| 26 | As a special exception, the copyright holders of this library give you |
| 27 | permission to link this library with independent modules to produce an |
| 28 | executable, regardless of the license terms of these independent |
| 29 | modules, and to copy and distribute the resulting executable under |
| 30 | terms of your choice, provided that you also meet, for each linked |
| 31 | independent module, the terms and conditions of the license of that |
| 32 | module. An independent module is a module which is not derived from |
| 33 | or based on this library. If you modify this library, you may extend |
| 34 | this exception to your version of the library, but you are not |
| 35 | obligated to do so. If you do not wish to do so, delete this |
| 36 | exception statement from your version. */ |
| 37 | |
| 38 | package javax.rmi.ssl; |
| 39 | |
| 40 | import java.io.IOException; |
| 41 | import java.io.Serializable; |
| 42 | |
| 43 | import java.util.StringTokenizer; |
| 44 | import javax.net.ssl.SSLSocketFactory; |
| 45 | import javax.net.ssl.SSLSocket; |
| 46 | import java.net.Socket; |
| 47 | import java.rmi.server.RMIClientSocketFactory; |
| 48 | |
| 49 | /** |
| 50 | * SslRMIClientSocketFactory |
| 51 | * |
| 52 | * This class implements an RMIClientSocketFactory for SSL sockets. |
| 53 | * it uses the defeult SSLClientSocketFactory. |
| 54 | * |
| 55 | * This class can optionally use the following system properties, if set: |
| 56 | * <code>javax.rmi.ssl.client.enabledCipherSuites</code> |
| 57 | * <code>javax.rmi.ssl.client.enabledProtocols</code> |
| 58 | * |
| 59 | * These properties will specify a list of SSL/TLS cipher suites and protocols, |
| 60 | * respectively, to enable on the created sockets. |
| 61 | * |
| 62 | * Both properties should consist of a comma-separated list. |
| 63 | * |
| 64 | * @author Sven de Marothy |
| 65 | * @since 1.5 |
| 66 | */ |
| 67 | public class SslRMIClientSocketFactory |
| 68 | implements RMIClientSocketFactory, Serializable |
| 69 | { |
| 70 | |
| 71 | /** |
| 72 | * Compatible with JDK 1.5 |
| 73 | */ |
| 74 | private static final long serialVersionUID = -8310631444933958385L; |
| 75 | |
| 76 | private String[] enabledCipherSuites, enabledProtocols; |
| 77 | |
| 78 | /** |
| 79 | * The SSL Socket factory. |
| 80 | */ |
| 81 | private static SSLSocketFactory socketFactory = |
| 82 | (SSLSocketFactory)SSLSocketFactory.getDefault(); |
| 83 | |
| 84 | /** |
| 85 | * Creates a new SslRMIClientSocketFactory |
| 86 | */ |
| 87 | public SslRMIClientSocketFactory() |
| 88 | { |
| 89 | enabledCipherSuites = getProp("javax.rmi.ssl.client.enabledCipherSuites"); |
| 90 | enabledProtocols = getProp("javax.rmi.ssl.client.enabledProtocols"); |
| 91 | } |
| 92 | |
| 93 | private String[] getProp(String p) |
| 94 | { |
| 95 | StringTokenizer st; |
| 96 | try |
| 97 | { |
| 98 | String o = (String)System.getProperty( p ); |
| 99 | st = new StringTokenizer( o, "," ); |
| 100 | } |
| 101 | catch(SecurityException se) |
| 102 | { |
| 103 | return null; |
| 104 | } |
| 105 | |
| 106 | int n = st.countTokens(); |
| 107 | if( n < 1 ) |
| 108 | return null; |
| 109 | String[] strs = new String[ n ]; |
| 110 | for( int i = 0; i < n; i++ ) |
| 111 | strs[i] = st.nextToken().trim(); |
| 112 | |
| 113 | return strs; |
| 114 | } |
| 115 | |
| 116 | /** |
| 117 | * Creates an SSLSocket on a given port |
| 118 | * |
| 119 | * @throws IOException if an error occurs on socket creation. |
| 120 | */ |
| 121 | public Socket createSocket(String host, int port) throws IOException |
| 122 | { |
| 123 | SSLSocket socket = (SSLSocket)socketFactory. |
| 124 | createSocket( host, port ); |
| 125 | if( enabledCipherSuites != null ) |
| 126 | socket.setEnabledCipherSuites( enabledCipherSuites ); |
| 127 | if( enabledProtocols != null ) |
| 128 | socket.setEnabledProtocols( enabledProtocols ); |
| 129 | return socket; |
| 130 | } |
| 131 | |
| 132 | /** |
| 133 | * Compare two SslRMIServerSocketFactor instances |
| 134 | */ |
| 135 | public boolean equals(Object obj) |
| 136 | { |
| 137 | if( !(obj instanceof SslRMIClientSocketFactory) ) |
| 138 | return false; |
| 139 | SslRMIClientSocketFactory s = (SslRMIClientSocketFactory)obj; |
| 140 | |
| 141 | if(!SslRMIServerSocketFactory. |
| 142 | cmpStrArray(enabledCipherSuites, s.enabledCipherSuites)) |
| 143 | return false; |
| 144 | |
| 145 | if(!SslRMIServerSocketFactory. |
| 146 | cmpStrArray(enabledProtocols, s.enabledProtocols)) |
| 147 | return false; |
| 148 | |
| 149 | return true; |
| 150 | } |
| 151 | |
| 152 | /** |
| 153 | * Returns the hash code of this object. |
| 154 | */ |
| 155 | public int hashCode() |
| 156 | { |
| 157 | int hash = 0; |
| 158 | if( enabledCipherSuites != null ) |
| 159 | for(int i = 0; i < enabledCipherSuites.length; i++ ) |
| 160 | hash = hash ^ enabledCipherSuites[i].hashCode(); |
| 161 | if( enabledProtocols != null ) |
| 162 | for(int i = 0; i < enabledProtocols.length; i++ ) |
| 163 | hash = hash ^ enabledProtocols[i].hashCode(); |
| 164 | return hash; |
| 165 | } |
| 166 | } |