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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.proxy.filter;<a name="line.20"></a> |
| <span class="sourceLineNo">021</span><a name="line.21"></a> |
| <span class="sourceLineNo">022</span>import org.apache.mina.core.buffer.IoBuffer;<a name="line.22"></a> |
| <span class="sourceLineNo">023</span>import org.apache.mina.core.filterchain.IoFilter;<a name="line.23"></a> |
| <span class="sourceLineNo">024</span>import org.apache.mina.core.filterchain.IoFilterAdapter;<a name="line.24"></a> |
| <span class="sourceLineNo">025</span>import org.apache.mina.core.filterchain.IoFilterChain;<a name="line.25"></a> |
| <span class="sourceLineNo">026</span>import org.apache.mina.core.session.IdleStatus;<a name="line.26"></a> |
| <span class="sourceLineNo">027</span>import org.apache.mina.core.session.IoSession;<a name="line.27"></a> |
| <span class="sourceLineNo">028</span>import org.apache.mina.core.write.WriteRequest;<a name="line.28"></a> |
| <span class="sourceLineNo">029</span>import org.apache.mina.proxy.ProxyAuthException;<a name="line.29"></a> |
| <span class="sourceLineNo">030</span>import org.apache.mina.proxy.ProxyConnector;<a name="line.30"></a> |
| <span class="sourceLineNo">031</span>import org.apache.mina.proxy.ProxyLogicHandler;<a name="line.31"></a> |
| <span class="sourceLineNo">032</span>import org.apache.mina.proxy.event.IoSessionEvent;<a name="line.32"></a> |
| <span class="sourceLineNo">033</span>import org.apache.mina.proxy.event.IoSessionEventQueue;<a name="line.33"></a> |
| <span class="sourceLineNo">034</span>import org.apache.mina.proxy.event.IoSessionEventType;<a name="line.34"></a> |
| <span class="sourceLineNo">035</span>import org.apache.mina.proxy.handlers.ProxyRequest;<a name="line.35"></a> |
| <span class="sourceLineNo">036</span>import org.apache.mina.proxy.handlers.http.HttpSmartProxyHandler;<a name="line.36"></a> |
| <span class="sourceLineNo">037</span>import org.apache.mina.proxy.handlers.socks.Socks4LogicHandler;<a name="line.37"></a> |
| <span class="sourceLineNo">038</span>import org.apache.mina.proxy.handlers.socks.Socks5LogicHandler;<a name="line.38"></a> |
| <span class="sourceLineNo">039</span>import org.apache.mina.proxy.handlers.socks.SocksProxyConstants;<a name="line.39"></a> |
| <span class="sourceLineNo">040</span>import org.apache.mina.proxy.handlers.socks.SocksProxyRequest;<a name="line.40"></a> |
| <span class="sourceLineNo">041</span>import org.apache.mina.proxy.session.ProxyIoSession;<a name="line.41"></a> |
| <span class="sourceLineNo">042</span>import org.slf4j.Logger;<a name="line.42"></a> |
| <span class="sourceLineNo">043</span>import org.slf4j.LoggerFactory;<a name="line.43"></a> |
| <span class="sourceLineNo">044</span><a name="line.44"></a> |
| <span class="sourceLineNo">045</span>/**<a name="line.45"></a> |
| <span class="sourceLineNo">046</span> * ProxyFilter.java - Proxy {@link IoFilter}. <a name="line.46"></a> |
| <span class="sourceLineNo">047</span> * Automatically inserted into the {@link IoFilter} chain by {@link ProxyConnector}.<a name="line.47"></a> |
| <span class="sourceLineNo">048</span> * Sends the initial handshake message to the proxy and handles any response<a name="line.48"></a> |
| <span class="sourceLineNo">049</span> * to the handshake. Once the handshake has completed and the proxied connection has been<a name="line.49"></a> |
| <span class="sourceLineNo">050</span> * established this filter becomes transparent to data flowing through the connection.<a name="line.50"></a> |
| <span class="sourceLineNo">051</span> * <p><a name="line.51"></a> |
| <span class="sourceLineNo">052</span> * Based upon SSLFilter from mina-filter-ssl.<a name="line.52"></a> |
| <span class="sourceLineNo">053</span> * <a name="line.53"></a> |
| <span class="sourceLineNo">054</span> * @author <a href="http://mina.apache.org">Apache MINA Project</a><a name="line.54"></a> |
| <span class="sourceLineNo">055</span> * @since MINA 2.0.0-M3<a name="line.55"></a> |
| <span class="sourceLineNo">056</span> */<a name="line.56"></a> |
| <span class="sourceLineNo">057</span>public class ProxyFilter extends IoFilterAdapter {<a name="line.57"></a> |
| <span class="sourceLineNo">058</span> private final static Logger LOGGER = LoggerFactory.getLogger(ProxyFilter.class);<a name="line.58"></a> |
| <span class="sourceLineNo">059</span><a name="line.59"></a> |
| <span class="sourceLineNo">060</span> /**<a name="line.60"></a> |
| <span class="sourceLineNo">061</span> * Create a new {@link ProxyFilter}.<a name="line.61"></a> |
| <span class="sourceLineNo">062</span> */<a name="line.62"></a> |
| <span class="sourceLineNo">063</span> public ProxyFilter() {<a name="line.63"></a> |
| <span class="sourceLineNo">064</span> // Do nothing<a name="line.64"></a> |
| <span class="sourceLineNo">065</span> }<a name="line.65"></a> |
| <span class="sourceLineNo">066</span><a name="line.66"></a> |
| <span class="sourceLineNo">067</span> /**<a name="line.67"></a> |
| <span class="sourceLineNo">068</span> * Called before the filter is added into the filter chain.<a name="line.68"></a> |
| <span class="sourceLineNo">069</span> * Checks if chain already holds an {@link ProxyFilter} instance. <a name="line.69"></a> |
| <span class="sourceLineNo">070</span> * <a name="line.70"></a> |
| <span class="sourceLineNo">071</span> * @param chain the filter chain<a name="line.71"></a> |
| <span class="sourceLineNo">072</span> * @param name the name assigned to this filter<a name="line.72"></a> |
| <span class="sourceLineNo">073</span> * @param nextFilter the next filter<a name="line.73"></a> |
| <span class="sourceLineNo">074</span> * @throws IllegalStateException if chain already contains an instance of <a name="line.74"></a> |
| <span class="sourceLineNo">075</span> * {@link ProxyFilter}<a name="line.75"></a> |
| <span class="sourceLineNo">076</span> */<a name="line.76"></a> |
| <span class="sourceLineNo">077</span> @Override<a name="line.77"></a> |
| <span class="sourceLineNo">078</span> public void onPreAdd(final IoFilterChain chain, final String name, final NextFilter nextFilter) {<a name="line.78"></a> |
| <span class="sourceLineNo">079</span> if (chain.contains(ProxyFilter.class)) {<a name="line.79"></a> |
| <span class="sourceLineNo">080</span> throw new IllegalStateException("A filter chain cannot contain more than one ProxyFilter.");<a name="line.80"></a> |
| <span class="sourceLineNo">081</span> }<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> /**<a name="line.84"></a> |
| <span class="sourceLineNo">085</span> * Called when the filter is removed from the filter chain.<a name="line.85"></a> |
| <span class="sourceLineNo">086</span> * Cleans the {@link ProxyIoSession} instance from the session.<a name="line.86"></a> |
| <span class="sourceLineNo">087</span> * <a name="line.87"></a> |
| <span class="sourceLineNo">088</span> * @param chain the filter chain<a name="line.88"></a> |
| <span class="sourceLineNo">089</span> * @param name the name assigned to this filter<a name="line.89"></a> |
| <span class="sourceLineNo">090</span> * @param nextFilter the next filter<a name="line.90"></a> |
| <span class="sourceLineNo">091</span> */<a name="line.91"></a> |
| <span class="sourceLineNo">092</span> @Override<a name="line.92"></a> |
| <span class="sourceLineNo">093</span> public void onPreRemove(final IoFilterChain chain, final String name, final NextFilter nextFilter) {<a name="line.93"></a> |
| <span class="sourceLineNo">094</span> IoSession session = chain.getSession();<a name="line.94"></a> |
| <span class="sourceLineNo">095</span> session.removeAttribute(ProxyIoSession.PROXY_SESSION);<a name="line.95"></a> |
| <span class="sourceLineNo">096</span> }<a name="line.96"></a> |
| <span class="sourceLineNo">097</span><a name="line.97"></a> |
| <span class="sourceLineNo">098</span> /**<a name="line.98"></a> |
| <span class="sourceLineNo">099</span> * Called when an exception occurs in the chain. A flag is set in the<a name="line.99"></a> |
| <span class="sourceLineNo">100</span> * {@link ProxyIoSession} session's instance to signal that handshake<a name="line.100"></a> |
| <span class="sourceLineNo">101</span> * failed. <a name="line.101"></a> |
| <span class="sourceLineNo">102</span> * <a name="line.102"></a> |
| <span class="sourceLineNo">103</span> * @param nextFilter next filter in the filter chain<a name="line.103"></a> |
| <span class="sourceLineNo">104</span> * @param session the MINA session<a name="line.104"></a> |
| <span class="sourceLineNo">105</span> * @param cause the original exception<a name="line.105"></a> |
| <span class="sourceLineNo">106</span> */<a name="line.106"></a> |
| <span class="sourceLineNo">107</span> @Override<a name="line.107"></a> |
| <span class="sourceLineNo">108</span> public void exceptionCaught(NextFilter nextFilter, IoSession session, Throwable cause) throws Exception {<a name="line.108"></a> |
| <span class="sourceLineNo">109</span> ProxyIoSession proxyIoSession = (ProxyIoSession) session.getAttribute(ProxyIoSession.PROXY_SESSION);<a name="line.109"></a> |
| <span class="sourceLineNo">110</span> proxyIoSession.setAuthenticationFailed(true);<a name="line.110"></a> |
| <span class="sourceLineNo">111</span> super.exceptionCaught(nextFilter, session, cause);<a name="line.111"></a> |
| <span class="sourceLineNo">112</span> }<a name="line.112"></a> |
| <span class="sourceLineNo">113</span><a name="line.113"></a> |
| <span class="sourceLineNo">114</span> /**<a name="line.114"></a> |
| <span class="sourceLineNo">115</span> * Get the {@link ProxyLogicHandler} for a given session.<a name="line.115"></a> |
| <span class="sourceLineNo">116</span> * <a name="line.116"></a> |
| <span class="sourceLineNo">117</span> * @param session the session object<a name="line.117"></a> |
| <span class="sourceLineNo">118</span> * @return the handler which will handle handshaking with the proxy<a name="line.118"></a> |
| <span class="sourceLineNo">119</span> */<a name="line.119"></a> |
| <span class="sourceLineNo">120</span> private ProxyLogicHandler getProxyHandler(final IoSession session) {<a name="line.120"></a> |
| <span class="sourceLineNo">121</span> ProxyLogicHandler handler = ((ProxyIoSession) session.getAttribute(ProxyIoSession.PROXY_SESSION)).getHandler();<a name="line.121"></a> |
| <span class="sourceLineNo">122</span><a name="line.122"></a> |
| <span class="sourceLineNo">123</span> if (handler == null) {<a name="line.123"></a> |
| <span class="sourceLineNo">124</span> throw new IllegalStateException();<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> // Sanity check<a name="line.127"></a> |
| <span class="sourceLineNo">128</span> if (handler.getProxyIoSession().getProxyFilter() != this) {<a name="line.128"></a> |
| <span class="sourceLineNo">129</span> throw new IllegalArgumentException("Not managed by this filter.");<a name="line.129"></a> |
| <span class="sourceLineNo">130</span> }<a name="line.130"></a> |
| <span class="sourceLineNo">131</span><a name="line.131"></a> |
| <span class="sourceLineNo">132</span> return handler;<a name="line.132"></a> |
| <span class="sourceLineNo">133</span> }<a name="line.133"></a> |
| <span class="sourceLineNo">134</span><a name="line.134"></a> |
| <span class="sourceLineNo">135</span> /**<a name="line.135"></a> |
| <span class="sourceLineNo">136</span> * Receives data from the remote host, passes to the handler if a handshake is in progress, <a name="line.136"></a> |
| <span class="sourceLineNo">137</span> * otherwise passes on transparently.<a name="line.137"></a> |
| <span class="sourceLineNo">138</span> * <a name="line.138"></a> |
| <span class="sourceLineNo">139</span> * @param nextFilter the next filter in filter chain<a name="line.139"></a> |
| <span class="sourceLineNo">140</span> * @param session the session object<a name="line.140"></a> |
| <span class="sourceLineNo">141</span> * @param message the object holding the received data<a name="line.141"></a> |
| <span class="sourceLineNo">142</span> */<a name="line.142"></a> |
| <span class="sourceLineNo">143</span> @Override<a name="line.143"></a> |
| <span class="sourceLineNo">144</span> public void messageReceived(final NextFilter nextFilter, final IoSession session, final Object message)<a name="line.144"></a> |
| <span class="sourceLineNo">145</span> throws ProxyAuthException {<a name="line.145"></a> |
| <span class="sourceLineNo">146</span> ProxyLogicHandler handler = getProxyHandler(session);<a name="line.146"></a> |
| <span class="sourceLineNo">147</span><a name="line.147"></a> |
| <span class="sourceLineNo">148</span> synchronized (handler) {<a name="line.148"></a> |
| <span class="sourceLineNo">149</span> IoBuffer buf = (IoBuffer) message;<a name="line.149"></a> |
| <span class="sourceLineNo">150</span><a name="line.150"></a> |
| <span class="sourceLineNo">151</span> if (handler.isHandshakeComplete()) {<a name="line.151"></a> |
| <span class="sourceLineNo">152</span> // Handshake done - pass data on as-is<a name="line.152"></a> |
| <span class="sourceLineNo">153</span> nextFilter.messageReceived(session, buf);<a name="line.153"></a> |
| <span class="sourceLineNo">154</span><a name="line.154"></a> |
| <span class="sourceLineNo">155</span> } else {<a name="line.155"></a> |
| <span class="sourceLineNo">156</span> LOGGER.debug(" Data Read: {} ({})", handler, buf);<a name="line.156"></a> |
| <span class="sourceLineNo">157</span><a name="line.157"></a> |
| <span class="sourceLineNo">158</span> // Keep sending handshake data to the handler until we run out<a name="line.158"></a> |
| <span class="sourceLineNo">159</span> // of data or the handshake is finished<a name="line.159"></a> |
| <span class="sourceLineNo">160</span> while (buf.hasRemaining() && !handler.isHandshakeComplete()) {<a name="line.160"></a> |
| <span class="sourceLineNo">161</span> LOGGER.debug(" Pre-handshake - passing to handler");<a name="line.161"></a> |
| <span class="sourceLineNo">162</span><a name="line.162"></a> |
| <span class="sourceLineNo">163</span> int pos = buf.position();<a name="line.163"></a> |
| <span class="sourceLineNo">164</span> handler.messageReceived(nextFilter, buf);<a name="line.164"></a> |
| <span class="sourceLineNo">165</span><a name="line.165"></a> |
| <span class="sourceLineNo">166</span> // Data not consumed or session closing<a name="line.166"></a> |
| <span class="sourceLineNo">167</span> if (buf.position() == pos || session.isClosing()) {<a name="line.167"></a> |
| <span class="sourceLineNo">168</span> return;<a name="line.168"></a> |
| <span class="sourceLineNo">169</span> }<a name="line.169"></a> |
| <span class="sourceLineNo">170</span> }<a name="line.170"></a> |
| <span class="sourceLineNo">171</span><a name="line.171"></a> |
| <span class="sourceLineNo">172</span> // Pass on any remaining data to the next filter<a name="line.172"></a> |
| <span class="sourceLineNo">173</span> if (buf.hasRemaining()) {<a name="line.173"></a> |
| <span class="sourceLineNo">174</span> LOGGER.debug(" Passing remaining data to next filter");<a name="line.174"></a> |
| <span class="sourceLineNo">175</span><a name="line.175"></a> |
| <span class="sourceLineNo">176</span> nextFilter.messageReceived(session, buf);<a name="line.176"></a> |
| <span class="sourceLineNo">177</span> }<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> }<a name="line.180"></a> |
| <span class="sourceLineNo">181</span><a name="line.181"></a> |
| <span class="sourceLineNo">182</span> /**<a name="line.182"></a> |
| <span class="sourceLineNo">183</span> * Filters outgoing writes, queueing them up if necessary while a handshake <a name="line.183"></a> |
| <span class="sourceLineNo">184</span> * is ongoing.<a name="line.184"></a> |
| <span class="sourceLineNo">185</span> * <a name="line.185"></a> |
| <span class="sourceLineNo">186</span> * @param nextFilter the next filter in filter chain<a name="line.186"></a> |
| <span class="sourceLineNo">187</span> * @param session the session object<a name="line.187"></a> |
| <span class="sourceLineNo">188</span> * @param writeRequest the data to write<a name="line.188"></a> |
| <span class="sourceLineNo">189</span> */<a name="line.189"></a> |
| <span class="sourceLineNo">190</span> @Override<a name="line.190"></a> |
| <span class="sourceLineNo">191</span> public void filterWrite(final NextFilter nextFilter, final IoSession session, final WriteRequest writeRequest) {<a name="line.191"></a> |
| <span class="sourceLineNo">192</span> writeData(nextFilter, session, writeRequest, false);<a name="line.192"></a> |
| <span class="sourceLineNo">193</span> }<a name="line.193"></a> |
| <span class="sourceLineNo">194</span><a name="line.194"></a> |
| <span class="sourceLineNo">195</span> /**<a name="line.195"></a> |
| <span class="sourceLineNo">196</span> * Actually write data. Queues the data up unless it relates to the handshake or the <a name="line.196"></a> |
| <span class="sourceLineNo">197</span> * handshake is done.<a name="line.197"></a> |
| <span class="sourceLineNo">198</span> * <a name="line.198"></a> |
| <span class="sourceLineNo">199</span> * @param nextFilter the next filter in filter chain<a name="line.199"></a> |
| <span class="sourceLineNo">200</span> * @param session the session object<a name="line.200"></a> |
| <span class="sourceLineNo">201</span> * @param writeRequest the data to write<a name="line.201"></a> |
| <span class="sourceLineNo">202</span> * @param isHandshakeData true if writeRequest is written by the proxy classes.<a name="line.202"></a> |
| <span class="sourceLineNo">203</span> */<a name="line.203"></a> |
| <span class="sourceLineNo">204</span> public void writeData(final NextFilter nextFilter, final IoSession session, final WriteRequest writeRequest,<a name="line.204"></a> |
| <span class="sourceLineNo">205</span> final boolean isHandshakeData) {<a name="line.205"></a> |
| <span class="sourceLineNo">206</span> ProxyLogicHandler handler = getProxyHandler(session);<a name="line.206"></a> |
| <span class="sourceLineNo">207</span><a name="line.207"></a> |
| <span class="sourceLineNo">208</span> synchronized (handler) {<a name="line.208"></a> |
| <span class="sourceLineNo">209</span> if (handler.isHandshakeComplete()) {<a name="line.209"></a> |
| <span class="sourceLineNo">210</span> // Handshake is done - write data as normal<a name="line.210"></a> |
| <span class="sourceLineNo">211</span> nextFilter.filterWrite(session, writeRequest);<a name="line.211"></a> |
| <span class="sourceLineNo">212</span> } else if (isHandshakeData) {<a name="line.212"></a> |
| <span class="sourceLineNo">213</span> LOGGER.debug(" handshake data: {}", writeRequest.getMessage());<a name="line.213"></a> |
| <span class="sourceLineNo">214</span><a name="line.214"></a> |
| <span class="sourceLineNo">215</span> // Writing handshake data<a name="line.215"></a> |
| <span class="sourceLineNo">216</span> nextFilter.filterWrite(session, writeRequest);<a name="line.216"></a> |
| <span class="sourceLineNo">217</span> } else {<a name="line.217"></a> |
| <span class="sourceLineNo">218</span> // Writing non-handshake data before the handshake finished<a name="line.218"></a> |
| <span class="sourceLineNo">219</span> if (!session.isConnected()) {<a name="line.219"></a> |
| <span class="sourceLineNo">220</span> // Not even connected - ignore<a name="line.220"></a> |
| <span class="sourceLineNo">221</span> LOGGER.debug(" Write request on closed session. Request ignored.");<a name="line.221"></a> |
| <span class="sourceLineNo">222</span> } else {<a name="line.222"></a> |
| <span class="sourceLineNo">223</span> // Queue the data to be sent as soon as the handshake completes<a name="line.223"></a> |
| <span class="sourceLineNo">224</span> LOGGER.debug(" Handshaking is not complete yet. Buffering write request.");<a name="line.224"></a> |
| <span class="sourceLineNo">225</span> handler.enqueueWriteRequest(nextFilter, writeRequest);<a name="line.225"></a> |
| <span class="sourceLineNo">226</span> }<a name="line.226"></a> |
| <span class="sourceLineNo">227</span> }<a name="line.227"></a> |
| <span class="sourceLineNo">228</span> }<a name="line.228"></a> |
| <span class="sourceLineNo">229</span> }<a name="line.229"></a> |
| <span class="sourceLineNo">230</span><a name="line.230"></a> |
| <span class="sourceLineNo">231</span> /**<a name="line.231"></a> |
| <span class="sourceLineNo">232</span> * Filter handshake related messages from reaching the messageSent callbacks of <a name="line.232"></a> |
| <span class="sourceLineNo">233</span> * downstream filters.<a name="line.233"></a> |
| <span class="sourceLineNo">234</span> * <a name="line.234"></a> |
| <span class="sourceLineNo">235</span> * @param nextFilter the next filter in filter chain<a name="line.235"></a> |
| <span class="sourceLineNo">236</span> * @param session the session object<a name="line.236"></a> |
| <span class="sourceLineNo">237</span> * @param writeRequest the data written<a name="line.237"></a> |
| <span class="sourceLineNo">238</span> */<a name="line.238"></a> |
| <span class="sourceLineNo">239</span> @Override<a name="line.239"></a> |
| <span class="sourceLineNo">240</span> public void messageSent(final NextFilter nextFilter, final IoSession session, final WriteRequest writeRequest)<a name="line.240"></a> |
| <span class="sourceLineNo">241</span> throws Exception {<a name="line.241"></a> |
| <span class="sourceLineNo">242</span> if (writeRequest.getMessage() != null && writeRequest.getMessage() instanceof ProxyHandshakeIoBuffer) {<a name="line.242"></a> |
| <span class="sourceLineNo">243</span> // Ignore buffers used in handshaking<a name="line.243"></a> |
| <span class="sourceLineNo">244</span> return;<a name="line.244"></a> |
| <span class="sourceLineNo">245</span> }<a name="line.245"></a> |
| <span class="sourceLineNo">246</span><a name="line.246"></a> |
| <span class="sourceLineNo">247</span> nextFilter.messageSent(session, writeRequest);<a name="line.247"></a> |
| <span class="sourceLineNo">248</span> }<a name="line.248"></a> |
| <span class="sourceLineNo">249</span><a name="line.249"></a> |
| <span class="sourceLineNo">250</span> /**<a name="line.250"></a> |
| <span class="sourceLineNo">251</span> * Called when the session is created. Will create the handler able to handle<a name="line.251"></a> |
| <span class="sourceLineNo">252</span> * the {@link ProxyIoSession#getRequest()} request stored in the session. Event<a name="line.252"></a> |
| <span class="sourceLineNo">253</span> * is stored in an {@link IoSessionEventQueue} for later delivery to the next filter<a name="line.253"></a> |
| <span class="sourceLineNo">254</span> * in the chain when the handshake would have succeed. This will prevent the rest of <a name="line.254"></a> |
| <span class="sourceLineNo">255</span> * the filter chain from being affected by this filter internals. <a name="line.255"></a> |
| <span class="sourceLineNo">256</span> * <a name="line.256"></a> |
| <span class="sourceLineNo">257</span> * Please note that this event can occur multiple times because of some http <a name="line.257"></a> |
| <span class="sourceLineNo">258</span> * proxies not handling keep-alive connections thus needing multiple sessions <a name="line.258"></a> |
| <span class="sourceLineNo">259</span> * during the handshake.<a name="line.259"></a> |
| <span class="sourceLineNo">260</span> * <a name="line.260"></a> |
| <span class="sourceLineNo">261</span> * @param nextFilter the next filter in filter chain<a name="line.261"></a> |
| <span class="sourceLineNo">262</span> * @param session the session object<a name="line.262"></a> |
| <span class="sourceLineNo">263</span> */<a name="line.263"></a> |
| <span class="sourceLineNo">264</span> @Override<a name="line.264"></a> |
| <span class="sourceLineNo">265</span> public void sessionCreated(NextFilter nextFilter, IoSession session) throws Exception {<a name="line.265"></a> |
| <span class="sourceLineNo">266</span> LOGGER.debug("Session created: " + session);<a name="line.266"></a> |
| <span class="sourceLineNo">267</span> ProxyIoSession proxyIoSession = (ProxyIoSession) session.getAttribute(ProxyIoSession.PROXY_SESSION);<a name="line.267"></a> |
| <span class="sourceLineNo">268</span> LOGGER.debug(" get proxyIoSession: " + proxyIoSession);<a name="line.268"></a> |
| <span class="sourceLineNo">269</span> proxyIoSession.setProxyFilter(this);<a name="line.269"></a> |
| <span class="sourceLineNo">270</span><a name="line.270"></a> |
| <span class="sourceLineNo">271</span> // Create a HTTP proxy handler and start handshake.<a name="line.271"></a> |
| <span class="sourceLineNo">272</span> ProxyLogicHandler handler = proxyIoSession.getHandler();<a name="line.272"></a> |
| <span class="sourceLineNo">273</span><a name="line.273"></a> |
| <span class="sourceLineNo">274</span> // This test prevents from loosing handler conversationnal state when<a name="line.274"></a> |
| <span class="sourceLineNo">275</span> // reconnection occurs during an http handshake.<a name="line.275"></a> |
| <span class="sourceLineNo">276</span> if (handler == null) {<a name="line.276"></a> |
| <span class="sourceLineNo">277</span> ProxyRequest request = proxyIoSession.getRequest();<a name="line.277"></a> |
| <span class="sourceLineNo">278</span><a name="line.278"></a> |
| <span class="sourceLineNo">279</span> if (request instanceof SocksProxyRequest) {<a name="line.279"></a> |
| <span class="sourceLineNo">280</span> SocksProxyRequest req = (SocksProxyRequest) request;<a name="line.280"></a> |
| <span class="sourceLineNo">281</span> if (req.getProtocolVersion() == SocksProxyConstants.SOCKS_VERSION_4) {<a name="line.281"></a> |
| <span class="sourceLineNo">282</span> handler = new Socks4LogicHandler(proxyIoSession);<a name="line.282"></a> |
| <span class="sourceLineNo">283</span> } else {<a name="line.283"></a> |
| <span class="sourceLineNo">284</span> handler = new Socks5LogicHandler(proxyIoSession);<a name="line.284"></a> |
| <span class="sourceLineNo">285</span> }<a name="line.285"></a> |
| <span class="sourceLineNo">286</span> } else {<a name="line.286"></a> |
| <span class="sourceLineNo">287</span> handler = new HttpSmartProxyHandler(proxyIoSession);<a name="line.287"></a> |
| <span class="sourceLineNo">288</span> }<a name="line.288"></a> |
| <span class="sourceLineNo">289</span><a name="line.289"></a> |
| <span class="sourceLineNo">290</span> proxyIoSession.setHandler(handler);<a name="line.290"></a> |
| <span class="sourceLineNo">291</span> handler.doHandshake(nextFilter);<a name="line.291"></a> |
| <span class="sourceLineNo">292</span> }<a name="line.292"></a> |
| <span class="sourceLineNo">293</span><a name="line.293"></a> |
| <span class="sourceLineNo">294</span> proxyIoSession.getEventQueue().enqueueEventIfNecessary(<a name="line.294"></a> |
| <span class="sourceLineNo">295</span> new IoSessionEvent(nextFilter, session, IoSessionEventType.CREATED));<a name="line.295"></a> |
| <span class="sourceLineNo">296</span> }<a name="line.296"></a> |
| <span class="sourceLineNo">297</span><a name="line.297"></a> |
| <span class="sourceLineNo">298</span> /**<a name="line.298"></a> |
| <span class="sourceLineNo">299</span> * Event is stored in an {@link IoSessionEventQueue} for later delivery to the next filter<a name="line.299"></a> |
| <span class="sourceLineNo">300</span> * in the chain when the handshake would have succeed. This will prevent the rest of <a name="line.300"></a> |
| <span class="sourceLineNo">301</span> * the filter chain from being affected by this filter internals.<a name="line.301"></a> |
| <span class="sourceLineNo">302</span> * <a name="line.302"></a> |
| <span class="sourceLineNo">303</span> * @param nextFilter the next filter in filter chain<a name="line.303"></a> |
| <span class="sourceLineNo">304</span> * @param session the session object<a name="line.304"></a> |
| <span class="sourceLineNo">305</span> */<a name="line.305"></a> |
| <span class="sourceLineNo">306</span> @Override<a name="line.306"></a> |
| <span class="sourceLineNo">307</span> public void sessionOpened(NextFilter nextFilter, IoSession session) throws Exception {<a name="line.307"></a> |
| <span class="sourceLineNo">308</span> ProxyIoSession proxyIoSession = (ProxyIoSession) session.getAttribute(ProxyIoSession.PROXY_SESSION);<a name="line.308"></a> |
| <span class="sourceLineNo">309</span> proxyIoSession.getEventQueue().enqueueEventIfNecessary(<a name="line.309"></a> |
| <span class="sourceLineNo">310</span> new IoSessionEvent(nextFilter, session, IoSessionEventType.OPENED));<a name="line.310"></a> |
| <span class="sourceLineNo">311</span> }<a name="line.311"></a> |
| <span class="sourceLineNo">312</span><a name="line.312"></a> |
| <span class="sourceLineNo">313</span> /**<a name="line.313"></a> |
| <span class="sourceLineNo">314</span> * Event is stored in an {@link IoSessionEventQueue} for later delivery to the next filter<a name="line.314"></a> |
| <span class="sourceLineNo">315</span> * in the chain when the handshake would have succeed. This will prevent the rest of <a name="line.315"></a> |
| <span class="sourceLineNo">316</span> * the filter chain from being affected by this filter internals.<a name="line.316"></a> |
| <span class="sourceLineNo">317</span> * <a name="line.317"></a> |
| <span class="sourceLineNo">318</span> * @param nextFilter the next filter in filter chain<a name="line.318"></a> |
| <span class="sourceLineNo">319</span> * @param session the session object<a name="line.319"></a> |
| <span class="sourceLineNo">320</span> */<a name="line.320"></a> |
| <span class="sourceLineNo">321</span> @Override<a name="line.321"></a> |
| <span class="sourceLineNo">322</span> public void sessionIdle(NextFilter nextFilter, IoSession session, IdleStatus status) throws Exception {<a name="line.322"></a> |
| <span class="sourceLineNo">323</span> ProxyIoSession proxyIoSession = (ProxyIoSession) session.getAttribute(ProxyIoSession.PROXY_SESSION);<a name="line.323"></a> |
| <span class="sourceLineNo">324</span> proxyIoSession.getEventQueue().enqueueEventIfNecessary(new IoSessionEvent(nextFilter, session, status));<a name="line.324"></a> |
| <span class="sourceLineNo">325</span> }<a name="line.325"></a> |
| <span class="sourceLineNo">326</span><a name="line.326"></a> |
| <span class="sourceLineNo">327</span> /**<a name="line.327"></a> |
| <span class="sourceLineNo">328</span> * Event is stored in an {@link IoSessionEventQueue} for later delivery to the next filter<a name="line.328"></a> |
| <span class="sourceLineNo">329</span> * in the chain when the handshake would have succeed. This will prevent the rest of <a name="line.329"></a> |
| <span class="sourceLineNo">330</span> * the filter chain from being affected by this filter internals.<a name="line.330"></a> |
| <span class="sourceLineNo">331</span> * <a name="line.331"></a> |
| <span class="sourceLineNo">332</span> * @param nextFilter the next filter in filter chain<a name="line.332"></a> |
| <span class="sourceLineNo">333</span> * @param session the session object<a name="line.333"></a> |
| <span class="sourceLineNo">334</span> */<a name="line.334"></a> |
| <span class="sourceLineNo">335</span> @Override<a name="line.335"></a> |
| <span class="sourceLineNo">336</span> public void sessionClosed(NextFilter nextFilter, IoSession session) throws Exception {<a name="line.336"></a> |
| <span class="sourceLineNo">337</span> ProxyIoSession proxyIoSession = (ProxyIoSession) session.getAttribute(ProxyIoSession.PROXY_SESSION);<a name="line.337"></a> |
| <span class="sourceLineNo">338</span> proxyIoSession.getEventQueue().enqueueEventIfNecessary(<a name="line.338"></a> |
| <span class="sourceLineNo">339</span> new IoSessionEvent(nextFilter, session, IoSessionEventType.CLOSED));<a name="line.339"></a> |
| <span class="sourceLineNo">340</span> }<a name="line.340"></a> |
| <span class="sourceLineNo">341</span>}<a name="line.341"></a> |
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| </div> |
| </body> |
| </html> |
