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| <pre><span class="sourceLineNo">001</span>/*<a name="line.1"></a> |
| <span class="sourceLineNo">002</span> * Licensed to the Apache Software Foundation (ASF) under one<a name="line.2"></a> |
| <span class="sourceLineNo">003</span> * or more contributor license agreements. See the NOTICE file<a name="line.3"></a> |
| <span class="sourceLineNo">004</span> * distributed with this work for additional information<a name="line.4"></a> |
| <span class="sourceLineNo">005</span> * regarding copyright ownership. The ASF licenses this file<a name="line.5"></a> |
| <span class="sourceLineNo">006</span> * to you under the Apache License, Version 2.0 (the<a name="line.6"></a> |
| <span class="sourceLineNo">007</span> * "License"); you may not use this file except in compliance<a name="line.7"></a> |
| <span class="sourceLineNo">008</span> * with the License. You may obtain a copy of the License at<a name="line.8"></a> |
| <span class="sourceLineNo">009</span> *<a name="line.9"></a> |
| <span class="sourceLineNo">010</span> * http://www.apache.org/licenses/LICENSE-2.0<a name="line.10"></a> |
| <span class="sourceLineNo">011</span> *<a name="line.11"></a> |
| <span class="sourceLineNo">012</span> * Unless required by applicable law or agreed to in writing,<a name="line.12"></a> |
| <span class="sourceLineNo">013</span> * software distributed under the License is distributed on an<a name="line.13"></a> |
| <span class="sourceLineNo">014</span> * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY<a name="line.14"></a> |
| <span class="sourceLineNo">015</span> * KIND, either express or implied. See the License for the<a name="line.15"></a> |
| <span class="sourceLineNo">016</span> * specific language governing permissions and limitations<a name="line.16"></a> |
| <span class="sourceLineNo">017</span> * under the License.<a name="line.17"></a> |
| <span class="sourceLineNo">018</span> *<a name="line.18"></a> |
| <span class="sourceLineNo">019</span> */<a name="line.19"></a> |
| <span class="sourceLineNo">020</span>package org.apache.mina.example.proxy;<a name="line.20"></a> |
| <span class="sourceLineNo">021</span><a name="line.21"></a> |
| <span class="sourceLineNo">022</span>import java.io.DataInputStream;<a name="line.22"></a> |
| <span class="sourceLineNo">023</span>import java.io.DataOutputStream;<a name="line.23"></a> |
| <span class="sourceLineNo">024</span>import java.io.IOException;<a name="line.24"></a> |
| <span class="sourceLineNo">025</span>import java.net.ServerSocket;<a name="line.25"></a> |
| <span class="sourceLineNo">026</span>import java.net.Socket;<a name="line.26"></a> |
| <span class="sourceLineNo">027</span><a name="line.27"></a> |
| <span class="sourceLineNo">028</span>import org.apache.mina.proxy.handlers.socks.SocksProxyConstants;<a name="line.28"></a> |
| <span class="sourceLineNo">029</span>import org.apache.mina.proxy.utils.ByteUtilities;<a name="line.29"></a> |
| <span class="sourceLineNo">030</span>import org.ietf.jgss.GSSContext;<a name="line.30"></a> |
| <span class="sourceLineNo">031</span>import org.ietf.jgss.GSSCredential;<a name="line.31"></a> |
| <span class="sourceLineNo">032</span>import org.ietf.jgss.GSSException;<a name="line.32"></a> |
| <span class="sourceLineNo">033</span>import org.ietf.jgss.GSSManager;<a name="line.33"></a> |
| <span class="sourceLineNo">034</span>import org.ietf.jgss.Oid;<a name="line.34"></a> |
| <span class="sourceLineNo">035</span>import org.slf4j.Logger;<a name="line.35"></a> |
| <span class="sourceLineNo">036</span>import org.slf4j.LoggerFactory;<a name="line.36"></a> |
| <span class="sourceLineNo">037</span><a name="line.37"></a> |
| <span class="sourceLineNo">038</span>/**<a name="line.38"></a> |
| <span class="sourceLineNo">039</span> * Socks5GSSAPITestServer.java - Basic test server for SOCKS5 GSSAPI authentication.<a name="line.39"></a> |
| <span class="sourceLineNo">040</span> * <a name="line.40"></a> |
| <span class="sourceLineNo">041</span> * NOTE: Launch this program with the following params in a pre-configured Kerberos V env.<a name="line.41"></a> |
| <span class="sourceLineNo">042</span> * Do not forget to replace < ... > vars with your own values.<a name="line.42"></a> |
| <span class="sourceLineNo">043</span> * <a name="line.43"></a> |
| <span class="sourceLineNo">044</span> * -Djava.security.krb5.realm=<your_krb_realm> <a name="line.44"></a> |
| <span class="sourceLineNo">045</span> * -Djavax.security.auth.useSubjectCredsOnly=false <a name="line.45"></a> |
| <span class="sourceLineNo">046</span> * -Djava.security.krb5.kdc=<your_kdc_hostname><a name="line.46"></a> |
| <span class="sourceLineNo">047</span> * -Djava.security.auth.login.config=${workspace_loc}\Mina2Proxy\src\bcsLogin.conf<a name="line.47"></a> |
| <span class="sourceLineNo">048</span> * -Dsun.security.krb5.debug=true <a name="line.48"></a> |
| <span class="sourceLineNo">049</span> * <a name="line.49"></a> |
| <span class="sourceLineNo">050</span> * @author <a href="http://mina.apache.org">Apache MINA Project</a><a name="line.50"></a> |
| <span class="sourceLineNo">051</span> * @since MINA 2.0.0-M3<a name="line.51"></a> |
| <span class="sourceLineNo">052</span> */<a name="line.52"></a> |
| <span class="sourceLineNo">053</span>public class Socks5GSSAPITestServer {<a name="line.53"></a> |
| <span class="sourceLineNo">054</span><a name="line.54"></a> |
| <span class="sourceLineNo">055</span> private final static Logger logger = LoggerFactory<a name="line.55"></a> |
| <span class="sourceLineNo">056</span> .getLogger(Socks5GSSAPITestServer.class);<a name="line.56"></a> |
| <span class="sourceLineNo">057</span><a name="line.57"></a> |
| <span class="sourceLineNo">058</span> /**<a name="line.58"></a> |
| <span class="sourceLineNo">059</span> * NOTE : change this to comply with your Kerberos environment.<a name="line.59"></a> |
| <span class="sourceLineNo">060</span> */<a name="line.60"></a> |
| <span class="sourceLineNo">061</span> protected final static String SERVICE_NAME = "host/myworkstation.local.network";<a name="line.61"></a> |
| <span class="sourceLineNo">062</span><a name="line.62"></a> |
| <span class="sourceLineNo">063</span> /**<a name="line.63"></a> |
| <span class="sourceLineNo">064</span> * Selected mechanism message: advertises client to use SocksV5 protocol with<a name="line.64"></a> |
| <span class="sourceLineNo">065</span> * GSSAPI authentication.<a name="line.65"></a> |
| <span class="sourceLineNo">066</span> */<a name="line.66"></a> |
| <span class="sourceLineNo">067</span> public final static byte[] SELECT_GSSAPI_AUTH_MSG = new byte[] {<a name="line.67"></a> |
| <span class="sourceLineNo">068</span> SocksProxyConstants.SOCKS_VERSION_5,<a name="line.68"></a> |
| <span class="sourceLineNo">069</span> SocksProxyConstants.GSSAPI_AUTH };<a name="line.69"></a> |
| <span class="sourceLineNo">070</span><a name="line.70"></a> |
| <span class="sourceLineNo">071</span> /**<a name="line.71"></a> |
| <span class="sourceLineNo">072</span> * Simulates a Socks v5 server using only Kerberos V authentication.<a name="line.72"></a> |
| <span class="sourceLineNo">073</span> * <a name="line.73"></a> |
| <span class="sourceLineNo">074</span> * @param localPort the local port used to bind the server<a name="line.74"></a> |
| <span class="sourceLineNo">075</span> * @throws IOException<a name="line.75"></a> |
| <span class="sourceLineNo">076</span> * @throws GSSException<a name="line.76"></a> |
| <span class="sourceLineNo">077</span> */<a name="line.77"></a> |
| <span class="sourceLineNo">078</span> private static void doHandShake(int localPort) throws IOException,<a name="line.78"></a> |
| <span class="sourceLineNo">079</span> GSSException {<a name="line.79"></a> |
| <span class="sourceLineNo">080</span> ServerSocket ss = new ServerSocket(localPort);<a name="line.80"></a> |
| <span class="sourceLineNo">081</span> GSSManager manager = GSSManager.getInstance();<a name="line.81"></a> |
| <span class="sourceLineNo">082</span><a name="line.82"></a> |
| <span class="sourceLineNo">083</span> /*<a name="line.83"></a> |
| <span class="sourceLineNo">084</span> * Create a GSSContext to receive the incoming request from the client. <a name="line.84"></a> |
| <span class="sourceLineNo">085</span> * Use null for the server credentials passed in to tell the underlying <a name="line.85"></a> |
| <span class="sourceLineNo">086</span> * mechanism to use whatever credentials it has available that can be <a name="line.86"></a> |
| <span class="sourceLineNo">087</span> * used to accept this connection.<a name="line.87"></a> |
| <span class="sourceLineNo">088</span> */<a name="line.88"></a> |
| <span class="sourceLineNo">089</span> GSSCredential serverCreds = manager.createCredential(manager<a name="line.89"></a> |
| <span class="sourceLineNo">090</span> .createName(SERVICE_NAME, null),<a name="line.90"></a> |
| <span class="sourceLineNo">091</span> GSSCredential.DEFAULT_LIFETIME, new Oid(<a name="line.91"></a> |
| <span class="sourceLineNo">092</span> SocksProxyConstants.KERBEROS_V5_OID),<a name="line.92"></a> |
| <span class="sourceLineNo">093</span> GSSCredential.ACCEPT_ONLY);<a name="line.93"></a> |
| <span class="sourceLineNo">094</span><a name="line.94"></a> |
| <span class="sourceLineNo">095</span> while (true) {<a name="line.95"></a> |
| <span class="sourceLineNo">096</span> logger.debug("Waiting for incoming connection on port {} ...",<a name="line.96"></a> |
| <span class="sourceLineNo">097</span> localPort);<a name="line.97"></a> |
| <span class="sourceLineNo">098</span> GSSContext context = manager.createContext(serverCreds);<a name="line.98"></a> |
| <span class="sourceLineNo">099</span> Socket socket = ss.accept();<a name="line.99"></a> |
| <span class="sourceLineNo">100</span><a name="line.100"></a> |
| <span class="sourceLineNo">101</span> try {<a name="line.101"></a> |
| <span class="sourceLineNo">102</span> DataInputStream inStream = new DataInputStream(socket<a name="line.102"></a> |
| <span class="sourceLineNo">103</span> .getInputStream());<a name="line.103"></a> |
| <span class="sourceLineNo">104</span> DataOutputStream outStream = new DataOutputStream(socket<a name="line.104"></a> |
| <span class="sourceLineNo">105</span> .getOutputStream());<a name="line.105"></a> |
| <span class="sourceLineNo">106</span><a name="line.106"></a> |
| <span class="sourceLineNo">107</span> logger.debug("Got connection from client @ {}", socket<a name="line.107"></a> |
| <span class="sourceLineNo">108</span> .getInetAddress());<a name="line.108"></a> |
| <span class="sourceLineNo">109</span><a name="line.109"></a> |
| <span class="sourceLineNo">110</span> // Read SOCKS5 greeting packet<a name="line.110"></a> |
| <span class="sourceLineNo">111</span> byte ver = (byte) inStream.read();<a name="line.111"></a> |
| <span class="sourceLineNo">112</span> if (ver != 0x05) {<a name="line.112"></a> |
| <span class="sourceLineNo">113</span> throw new IllegalStateException(<a name="line.113"></a> |
| <span class="sourceLineNo">114</span> "Wrong socks version received - " + ver);<a name="line.114"></a> |
| <span class="sourceLineNo">115</span> }<a name="line.115"></a> |
| <span class="sourceLineNo">116</span> byte nbAuthMethods = (byte) inStream.read();<a name="line.116"></a> |
| <span class="sourceLineNo">117</span> byte[] methods = new byte[nbAuthMethods];<a name="line.117"></a> |
| <span class="sourceLineNo">118</span> inStream.readFully(methods);<a name="line.118"></a> |
| <span class="sourceLineNo">119</span><a name="line.119"></a> |
| <span class="sourceLineNo">120</span> boolean found = false;<a name="line.120"></a> |
| <span class="sourceLineNo">121</span> for (byte b : methods) {<a name="line.121"></a> |
| <span class="sourceLineNo">122</span> if (b == SocksProxyConstants.GSSAPI_AUTH) {<a name="line.122"></a> |
| <span class="sourceLineNo">123</span> found = true;<a name="line.123"></a> |
| <span class="sourceLineNo">124</span> break;<a name="line.124"></a> |
| <span class="sourceLineNo">125</span> }<a name="line.125"></a> |
| <span class="sourceLineNo">126</span> }<a name="line.126"></a> |
| <span class="sourceLineNo">127</span><a name="line.127"></a> |
| <span class="sourceLineNo">128</span> if (!found) {<a name="line.128"></a> |
| <span class="sourceLineNo">129</span> throw new IllegalStateException(<a name="line.129"></a> |
| <span class="sourceLineNo">130</span> "Client does not support GSSAPI authentication");<a name="line.130"></a> |
| <span class="sourceLineNo">131</span> }<a name="line.131"></a> |
| <span class="sourceLineNo">132</span><a name="line.132"></a> |
| <span class="sourceLineNo">133</span> // Send selected mechanism message<a name="line.133"></a> |
| <span class="sourceLineNo">134</span> outStream.write(SELECT_GSSAPI_AUTH_MSG);<a name="line.134"></a> |
| <span class="sourceLineNo">135</span> outStream.flush();<a name="line.135"></a> |
| <span class="sourceLineNo">136</span><a name="line.136"></a> |
| <span class="sourceLineNo">137</span> // Do the context establishment loop<a name="line.137"></a> |
| <span class="sourceLineNo">138</span> byte[] token = null;<a name="line.138"></a> |
| <span class="sourceLineNo">139</span><a name="line.139"></a> |
| <span class="sourceLineNo">140</span> while (!context.isEstablished()) {<a name="line.140"></a> |
| <span class="sourceLineNo">141</span> byte authVersion = (byte) inStream.read();<a name="line.141"></a> |
| <span class="sourceLineNo">142</span><a name="line.142"></a> |
| <span class="sourceLineNo">143</span> if (authVersion != 0x01) {<a name="line.143"></a> |
| <span class="sourceLineNo">144</span> throw new IllegalStateException(<a name="line.144"></a> |
| <span class="sourceLineNo">145</span> "Wrong socks GSSAPI auth version received: "<a name="line.145"></a> |
| <span class="sourceLineNo">146</span> + authVersion);<a name="line.146"></a> |
| <span class="sourceLineNo">147</span> }<a name="line.147"></a> |
| <span class="sourceLineNo">148</span><a name="line.148"></a> |
| <span class="sourceLineNo">149</span> byte mtyp = (byte) inStream.read();<a name="line.149"></a> |
| <span class="sourceLineNo">150</span> if (mtyp != 0x01) {<a name="line.150"></a> |
| <span class="sourceLineNo">151</span> throw new IllegalArgumentException(<a name="line.151"></a> |
| <span class="sourceLineNo">152</span> "Message type should be equal to 1.");<a name="line.152"></a> |
| <span class="sourceLineNo">153</span> }<a name="line.153"></a> |
| <span class="sourceLineNo">154</span><a name="line.154"></a> |
| <span class="sourceLineNo">155</span> int len = inStream.readShort();<a name="line.155"></a> |
| <span class="sourceLineNo">156</span> token = new byte[len];<a name="line.156"></a> |
| <span class="sourceLineNo">157</span> inStream.readFully(token);<a name="line.157"></a> |
| <span class="sourceLineNo">158</span> logger.debug(" Received Token[{}] = {}", len,<a name="line.158"></a> |
| <span class="sourceLineNo">159</span> ByteUtilities.asHex(token));<a name="line.159"></a> |
| <span class="sourceLineNo">160</span><a name="line.160"></a> |
| <span class="sourceLineNo">161</span> token = context.acceptSecContext(token, 0, token.length);<a name="line.161"></a> |
| <span class="sourceLineNo">162</span><a name="line.162"></a> |
| <span class="sourceLineNo">163</span> // Send a token to the peer if one was generated by acceptSecContext<a name="line.163"></a> |
| <span class="sourceLineNo">164</span> if (token != null) {<a name="line.164"></a> |
| <span class="sourceLineNo">165</span> logger.debug(" Sending Token[{}] = {}", token.length,<a name="line.165"></a> |
| <span class="sourceLineNo">166</span> ByteUtilities.asHex(token));<a name="line.166"></a> |
| <span class="sourceLineNo">167</span> outStream.writeByte(authVersion);<a name="line.167"></a> |
| <span class="sourceLineNo">168</span> outStream.writeByte(mtyp);<a name="line.168"></a> |
| <span class="sourceLineNo">169</span> outStream.writeShort(token.length);<a name="line.169"></a> |
| <span class="sourceLineNo">170</span> outStream.write(token);<a name="line.170"></a> |
| <span class="sourceLineNo">171</span> outStream.flush();<a name="line.171"></a> |
| <span class="sourceLineNo">172</span> }<a name="line.172"></a> |
| <span class="sourceLineNo">173</span> }<a name="line.173"></a> |
| <span class="sourceLineNo">174</span><a name="line.174"></a> |
| <span class="sourceLineNo">175</span> logger.debug("Context Established !");<a name="line.175"></a> |
| <span class="sourceLineNo">176</span> logger.debug("Client is {}", context.getSrcName());<a name="line.176"></a> |
| <span class="sourceLineNo">177</span> logger.debug("Server is {}", context.getTargName());<a name="line.177"></a> |
| <span class="sourceLineNo">178</span><a name="line.178"></a> |
| <span class="sourceLineNo">179</span> /*<a name="line.179"></a> |
| <span class="sourceLineNo">180</span> * If mutual authentication did not take place, then<a name="line.180"></a> |
| <span class="sourceLineNo">181</span> * only the client was authenticated to the<a name="line.181"></a> |
| <span class="sourceLineNo">182</span> * server. Otherwise, both client and server were<a name="line.182"></a> |
| <span class="sourceLineNo">183</span> * authenticated to each other. <a name="line.183"></a> |
| <span class="sourceLineNo">184</span> */<a name="line.184"></a> |
| <span class="sourceLineNo">185</span> if (context.getMutualAuthState()) {<a name="line.185"></a> |
| <span class="sourceLineNo">186</span> logger.debug("Mutual authentication took place !");<a name="line.186"></a> |
| <span class="sourceLineNo">187</span> }<a name="line.187"></a> |
| <span class="sourceLineNo">188</span><a name="line.188"></a> |
| <span class="sourceLineNo">189</span> // We can now abort the process after a short time as auth is OK<a name="line.189"></a> |
| <span class="sourceLineNo">190</span> // and finally block will close session<a name="line.190"></a> |
| <span class="sourceLineNo">191</span> Thread.sleep(500);<a name="line.191"></a> |
| <span class="sourceLineNo">192</span> } catch (Exception ex) {<a name="line.192"></a> |
| <span class="sourceLineNo">193</span> //ex.printStackTrace();<a name="line.193"></a> |
| <span class="sourceLineNo">194</span> } finally {<a name="line.194"></a> |
| <span class="sourceLineNo">195</span> context.dispose();<a name="line.195"></a> |
| <span class="sourceLineNo">196</span> socket.close();<a name="line.196"></a> |
| <span class="sourceLineNo">197</span> }<a name="line.197"></a> |
| <span class="sourceLineNo">198</span> }<a name="line.198"></a> |
| <span class="sourceLineNo">199</span> }<a name="line.199"></a> |
| <span class="sourceLineNo">200</span><a name="line.200"></a> |
| <span class="sourceLineNo">201</span> /**<a name="line.201"></a> |
| <span class="sourceLineNo">202</span> * {@inheritDoc}<a name="line.202"></a> |
| <span class="sourceLineNo">203</span> */<a name="line.203"></a> |
| <span class="sourceLineNo">204</span> public static void main(String[] args) throws Exception {<a name="line.204"></a> |
| <span class="sourceLineNo">205</span> // Obtain the command-line arguments and parse the port number<a name="line.205"></a> |
| <span class="sourceLineNo">206</span> if (args.length != 1) {<a name="line.206"></a> |
| <span class="sourceLineNo">207</span> System.err<a name="line.207"></a> |
| <span class="sourceLineNo">208</span> .println("Usage: java <options> Socks5GSSAPITestServer <localPort>");<a name="line.208"></a> |
| <span class="sourceLineNo">209</span> System.exit(-1);<a name="line.209"></a> |
| <span class="sourceLineNo">210</span> }<a name="line.210"></a> |
| <span class="sourceLineNo">211</span><a name="line.211"></a> |
| <span class="sourceLineNo">212</span> doHandShake(Integer.parseInt(args[0]));<a name="line.212"></a> |
| <span class="sourceLineNo">213</span> System.exit(0);<a name="line.213"></a> |
| <span class="sourceLineNo">214</span> }<a name="line.214"></a> |
| <span class="sourceLineNo">215</span>}<a name="line.215"></a> |
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