001/* SslRMIClientSocketFactory.java -- 002 Copyright (C) 2006 Free Software Foundation 003 004This file is part of GNU Classpath. 005 006GNU Classpath is free software; you can redistribute it and/or modify 007it under the terms of the GNU General Public License as published by 008the Free Software Foundation; either version 2, or (at your option) 009any later version. 010 011GNU Classpath is distributed in the hope that it will be useful, but 012WITHOUT ANY WARRANTY; without even the implied warranty of 013MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 014General Public License for more details. 015 016You should have received a copy of the GNU General Public License 017along with GNU Classpath; see the file COPYING. If not, write to the 018Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 01902110-1301 USA. 020 021Linking this library statically or dynamically with other modules is 022making a combined work based on this library. Thus, the terms and 023conditions of the GNU General Public License cover the whole 024combination. 025 026As a special exception, the copyright holders of this library give you 027permission to link this library with independent modules to produce an 028executable, regardless of the license terms of these independent 029modules, and to copy and distribute the resulting executable under 030terms of your choice, provided that you also meet, for each linked 031independent module, the terms and conditions of the license of that 032module. An independent module is a module which is not derived from 033or based on this library. If you modify this library, you may extend 034this exception to your version of the library, but you are not 035obligated to do so. If you do not wish to do so, delete this 036exception statement from your version. */ 037 038package javax.rmi.ssl; 039 040import java.io.IOException; 041import java.io.Serializable; 042 043import java.util.StringTokenizer; 044import javax.net.ssl.SSLSocketFactory; 045import javax.net.ssl.SSLSocket; 046import java.net.Socket; 047import java.rmi.server.RMIClientSocketFactory; 048 049/** 050 * SslRMIClientSocketFactory 051 * 052 * This class implements an RMIClientSocketFactory for SSL sockets. 053 * it uses the default SSLClientSocketFactory. 054 * 055 * This class can optionally use the following system properties, if set: 056 * <code>javax.rmi.ssl.client.enabledCipherSuites</code> 057 * <code>javax.rmi.ssl.client.enabledProtocols</code> 058 * 059 * These properties will specify a list of SSL/TLS cipher suites and protocols, 060 * respectively, to enable on the created sockets. 061 * 062 * Both properties should consist of a comma-separated list. 063 * 064 * @author Sven de Marothy 065 * @since 1.5 066 */ 067public class SslRMIClientSocketFactory 068 implements RMIClientSocketFactory, Serializable 069{ 070 071 /** 072 * Compatible with JDK 1.5 073 */ 074 private static final long serialVersionUID = -8310631444933958385L; 075 076 private String[] enabledCipherSuites, enabledProtocols; 077 078 /** 079 * The SSL Socket factory. 080 */ 081 private static SSLSocketFactory socketFactory = 082 (SSLSocketFactory)SSLSocketFactory.getDefault(); 083 084 /** 085 * Creates a new SslRMIClientSocketFactory 086 */ 087 public SslRMIClientSocketFactory() 088 { 089 enabledCipherSuites = getProp("javax.rmi.ssl.client.enabledCipherSuites"); 090 enabledProtocols = getProp("javax.rmi.ssl.client.enabledProtocols"); 091 } 092 093 private String[] getProp(String p) 094 { 095 String o; 096 try 097 { 098 o = System.getProperty(p); 099 } 100 catch(SecurityException se) 101 { 102 return null; 103 } 104 105 if (o == null) 106 return null; 107 StringTokenizer st = new StringTokenizer( o, "," ); 108 int n = st.countTokens(); 109 if( n < 1 ) 110 return null; 111 String[] strs = new String[ n ]; 112 for( int i = 0; i < n; i++ ) 113 strs[i] = st.nextToken().trim(); 114 115 return strs; 116 } 117 118 /** 119 * Creates an SSLSocket on a given port 120 * 121 * @throws IOException if an error occurs on socket creation. 122 */ 123 public Socket createSocket(String host, int port) throws IOException 124 { 125 SSLSocket socket = (SSLSocket)socketFactory. 126 createSocket( host, port ); 127 if( enabledCipherSuites != null ) 128 socket.setEnabledCipherSuites( enabledCipherSuites ); 129 if( enabledProtocols != null ) 130 socket.setEnabledProtocols( enabledProtocols ); 131 return socket; 132 } 133 134 /** 135 * Compare two SslRMIServerSocketFactor instances 136 */ 137 public boolean equals(Object obj) 138 { 139 if( !(obj instanceof SslRMIClientSocketFactory) ) 140 return false; 141 SslRMIClientSocketFactory s = (SslRMIClientSocketFactory)obj; 142 143 if(!SslRMIServerSocketFactory. 144 cmpStrArray(enabledCipherSuites, s.enabledCipherSuites)) 145 return false; 146 147 if(!SslRMIServerSocketFactory. 148 cmpStrArray(enabledProtocols, s.enabledProtocols)) 149 return false; 150 151 return true; 152 } 153 154 /** 155 * Returns the hash code of this object. 156 */ 157 public int hashCode() 158 { 159 int hash = 0; 160 if( enabledCipherSuites != null ) 161 for(int i = 0; i < enabledCipherSuites.length; i++ ) 162 hash = hash ^ enabledCipherSuites[i].hashCode(); 163 if( enabledProtocols != null ) 164 for(int i = 0; i < enabledProtocols.length; i++ ) 165 hash = hash ^ enabledProtocols[i].hashCode(); 166 return hash; 167 } 168}