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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.handlers.http;<a name="line.20"></a> |
| <span class="sourceLineNo">021</span><a name="line.21"></a> |
| <span class="sourceLineNo">022</span>import java.util.HashMap;<a name="line.22"></a> |
| <span class="sourceLineNo">023</span>import java.util.List;<a name="line.23"></a> |
| <span class="sourceLineNo">024</span>import java.util.Map;<a name="line.24"></a> |
| <span class="sourceLineNo">025</span><a name="line.25"></a> |
| <span class="sourceLineNo">026</span>import org.apache.mina.core.filterchain.IoFilter.NextFilter;<a name="line.26"></a> |
| <span class="sourceLineNo">027</span>import org.apache.mina.proxy.ProxyAuthException;<a name="line.27"></a> |
| <span class="sourceLineNo">028</span>import org.apache.mina.proxy.session.ProxyIoSession;<a name="line.28"></a> |
| <span class="sourceLineNo">029</span>import org.apache.mina.proxy.utils.StringUtilities;<a name="line.29"></a> |
| <span class="sourceLineNo">030</span>import org.slf4j.Logger;<a name="line.30"></a> |
| <span class="sourceLineNo">031</span>import org.slf4j.LoggerFactory;<a name="line.31"></a> |
| <span class="sourceLineNo">032</span><a name="line.32"></a> |
| <span class="sourceLineNo">033</span>/**<a name="line.33"></a> |
| <span class="sourceLineNo">034</span> * HttpSmartProxyHandler.java - HTTP proxy handler that automatically handles forwarding a request <a name="line.34"></a> |
| <span class="sourceLineNo">035</span> * to the appropriate authentication mechanism logic handler.<a name="line.35"></a> |
| <span class="sourceLineNo">036</span> * <a name="line.36"></a> |
| <span class="sourceLineNo">037</span> * @author <a href="http://mina.apache.org">Apache MINA Project</a><a name="line.37"></a> |
| <span class="sourceLineNo">038</span> * @since MINA 2.0.0-M3<a name="line.38"></a> |
| <span class="sourceLineNo">039</span> */<a name="line.39"></a> |
| <span class="sourceLineNo">040</span>public class HttpSmartProxyHandler extends AbstractHttpLogicHandler {<a name="line.40"></a> |
| <span class="sourceLineNo">041</span> private final static Logger logger = LoggerFactory.getLogger(HttpSmartProxyHandler.class);<a name="line.41"></a> |
| <span class="sourceLineNo">042</span><a name="line.42"></a> |
| <span class="sourceLineNo">043</span> /**<a name="line.43"></a> |
| <span class="sourceLineNo">044</span> * Has the HTTP proxy request been sent ?<a name="line.44"></a> |
| <span class="sourceLineNo">045</span> */<a name="line.45"></a> |
| <span class="sourceLineNo">046</span> private boolean requestSent = false;<a name="line.46"></a> |
| <span class="sourceLineNo">047</span><a name="line.47"></a> |
| <span class="sourceLineNo">048</span> /**<a name="line.48"></a> |
| <span class="sourceLineNo">049</span> * The automatically selected http authentication logic handler. <a name="line.49"></a> |
| <span class="sourceLineNo">050</span> */<a name="line.50"></a> |
| <span class="sourceLineNo">051</span> private AbstractAuthLogicHandler authHandler;<a name="line.51"></a> |
| <span class="sourceLineNo">052</span><a name="line.52"></a> |
| <span class="sourceLineNo">053</span> public HttpSmartProxyHandler(final ProxyIoSession proxyIoSession) {<a name="line.53"></a> |
| <span class="sourceLineNo">054</span> super(proxyIoSession);<a name="line.54"></a> |
| <span class="sourceLineNo">055</span> }<a name="line.55"></a> |
| <span class="sourceLineNo">056</span><a name="line.56"></a> |
| <span class="sourceLineNo">057</span> /**<a name="line.57"></a> |
| <span class="sourceLineNo">058</span> * Performs the handshake processing.<a name="line.58"></a> |
| <span class="sourceLineNo">059</span> * <a name="line.59"></a> |
| <span class="sourceLineNo">060</span> * @param nextFilter the next filter<a name="line.60"></a> |
| <span class="sourceLineNo">061</span> */<a name="line.61"></a> |
| <span class="sourceLineNo">062</span> public void doHandshake(final NextFilter nextFilter) throws ProxyAuthException {<a name="line.62"></a> |
| <span class="sourceLineNo">063</span> logger.debug(" doHandshake()");<a name="line.63"></a> |
| <span class="sourceLineNo">064</span><a name="line.64"></a> |
| <span class="sourceLineNo">065</span> if (authHandler != null) {<a name="line.65"></a> |
| <span class="sourceLineNo">066</span> authHandler.doHandshake(nextFilter);<a name="line.66"></a> |
| <span class="sourceLineNo">067</span> } else {<a name="line.67"></a> |
| <span class="sourceLineNo">068</span> if (requestSent) {<a name="line.68"></a> |
| <span class="sourceLineNo">069</span> // Safety check<a name="line.69"></a> |
| <span class="sourceLineNo">070</span> throw new ProxyAuthException("Authentication request already sent");<a name="line.70"></a> |
| <span class="sourceLineNo">071</span> }<a name="line.71"></a> |
| <span class="sourceLineNo">072</span><a name="line.72"></a> |
| <span class="sourceLineNo">073</span> logger.debug(" sending HTTP request");<a name="line.73"></a> |
| <span class="sourceLineNo">074</span><a name="line.74"></a> |
| <span class="sourceLineNo">075</span> // Compute request headers<a name="line.75"></a> |
| <span class="sourceLineNo">076</span> HttpProxyRequest req = (HttpProxyRequest) getProxyIoSession().getRequest();<a name="line.76"></a> |
| <span class="sourceLineNo">077</span> Map<String, List<String>> headers = req.getHeaders() != null ? req.getHeaders()<a name="line.77"></a> |
| <span class="sourceLineNo">078</span> : new HashMap<String, List<String>>();<a name="line.78"></a> |
| <span class="sourceLineNo">079</span><a name="line.79"></a> |
| <span class="sourceLineNo">080</span> AbstractAuthLogicHandler.addKeepAliveHeaders(headers);<a name="line.80"></a> |
| <span class="sourceLineNo">081</span> req.setHeaders(headers);<a name="line.81"></a> |
| <span class="sourceLineNo">082</span><a name="line.82"></a> |
| <span class="sourceLineNo">083</span> // Write request to the proxy<a name="line.83"></a> |
| <span class="sourceLineNo">084</span> writeRequest(nextFilter, req);<a name="line.84"></a> |
| <span class="sourceLineNo">085</span> requestSent = true;<a name="line.85"></a> |
| <span class="sourceLineNo">086</span> }<a name="line.86"></a> |
| <span class="sourceLineNo">087</span> }<a name="line.87"></a> |
| <span class="sourceLineNo">088</span><a name="line.88"></a> |
| <span class="sourceLineNo">089</span> /**<a name="line.89"></a> |
| <span class="sourceLineNo">090</span> * Automatic selection of the authentication algorithm. If <code>preferedOrder</code> is set then<a name="line.90"></a> |
| <span class="sourceLineNo">091</span> * algorithms are selected from the list order otherwise the algorithm tries to select the most <a name="line.91"></a> |
| <span class="sourceLineNo">092</span> * secured algorithm available first.<a name="line.92"></a> |
| <span class="sourceLineNo">093</span> * <a name="line.93"></a> |
| <span class="sourceLineNo">094</span> * @param response the proxy response<a name="line.94"></a> |
| <span class="sourceLineNo">095</span> */<a name="line.95"></a> |
| <span class="sourceLineNo">096</span> private void autoSelectAuthHandler(final HttpProxyResponse response) throws ProxyAuthException {<a name="line.96"></a> |
| <span class="sourceLineNo">097</span> // Get the Proxy-Authenticate header<a name="line.97"></a> |
| <span class="sourceLineNo">098</span> List<String> values = response.getHeaders().get("Proxy-Authenticate");<a name="line.98"></a> |
| <span class="sourceLineNo">099</span> ProxyIoSession proxyIoSession = getProxyIoSession();<a name="line.99"></a> |
| <span class="sourceLineNo">100</span><a name="line.100"></a> |
| <span class="sourceLineNo">101</span> if (values == null || values.size() == 0) {<a name="line.101"></a> |
| <span class="sourceLineNo">102</span> authHandler = HttpAuthenticationMethods.NO_AUTH.getNewHandler(proxyIoSession);<a name="line.102"></a> |
| <span class="sourceLineNo">103</span><a name="line.103"></a> |
| <span class="sourceLineNo">104</span> } else if (getProxyIoSession().getPreferedOrder() == null) {<a name="line.104"></a> |
| <span class="sourceLineNo">105</span> // No preference order set for auth mechanisms<a name="line.105"></a> |
| <span class="sourceLineNo">106</span> int method = -1;<a name="line.106"></a> |
| <span class="sourceLineNo">107</span><a name="line.107"></a> |
| <span class="sourceLineNo">108</span> // Test which auth mechanism to use. First found is the first used<a name="line.108"></a> |
| <span class="sourceLineNo">109</span> // that's why we test in a decreasing security quality order.<a name="line.109"></a> |
| <span class="sourceLineNo">110</span> for (String proxyAuthHeader : values) {<a name="line.110"></a> |
| <span class="sourceLineNo">111</span> proxyAuthHeader = proxyAuthHeader.toLowerCase();<a name="line.111"></a> |
| <span class="sourceLineNo">112</span><a name="line.112"></a> |
| <span class="sourceLineNo">113</span> if (proxyAuthHeader.contains("ntlm")) {<a name="line.113"></a> |
| <span class="sourceLineNo">114</span> method = HttpAuthenticationMethods.NTLM.getId();<a name="line.114"></a> |
| <span class="sourceLineNo">115</span> break;<a name="line.115"></a> |
| <span class="sourceLineNo">116</span> } else if (proxyAuthHeader.contains("digest") && method != HttpAuthenticationMethods.NTLM.getId()) {<a name="line.116"></a> |
| <span class="sourceLineNo">117</span> method = HttpAuthenticationMethods.DIGEST.getId();<a name="line.117"></a> |
| <span class="sourceLineNo">118</span> } else if (proxyAuthHeader.contains("basic") && method == -1) {<a name="line.118"></a> |
| <span class="sourceLineNo">119</span> method = HttpAuthenticationMethods.BASIC.getId();<a name="line.119"></a> |
| <span class="sourceLineNo">120</span> }<a name="line.120"></a> |
| <span class="sourceLineNo">121</span> }<a name="line.121"></a> |
| <span class="sourceLineNo">122</span><a name="line.122"></a> |
| <span class="sourceLineNo">123</span> if (method != -1) {<a name="line.123"></a> |
| <span class="sourceLineNo">124</span> try {<a name="line.124"></a> |
| <span class="sourceLineNo">125</span> authHandler = HttpAuthenticationMethods.getNewHandler(method, proxyIoSession);<a name="line.125"></a> |
| <span class="sourceLineNo">126</span> } catch (Exception ex) {<a name="line.126"></a> |
| <span class="sourceLineNo">127</span> logger.debug("Following exception occured:", ex);<a name="line.127"></a> |
| <span class="sourceLineNo">128</span> }<a name="line.128"></a> |
| <span class="sourceLineNo">129</span> }<a name="line.129"></a> |
| <span class="sourceLineNo">130</span><a name="line.130"></a> |
| <span class="sourceLineNo">131</span> if (authHandler == null) {<a name="line.131"></a> |
| <span class="sourceLineNo">132</span> authHandler = HttpAuthenticationMethods.NO_AUTH.getNewHandler(proxyIoSession);<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> } else {<a name="line.135"></a> |
| <span class="sourceLineNo">136</span> for (HttpAuthenticationMethods method : proxyIoSession.getPreferedOrder()) {<a name="line.136"></a> |
| <span class="sourceLineNo">137</span> if (authHandler != null) {<a name="line.137"></a> |
| <span class="sourceLineNo">138</span> break;<a name="line.138"></a> |
| <span class="sourceLineNo">139</span> }<a name="line.139"></a> |
| <span class="sourceLineNo">140</span><a name="line.140"></a> |
| <span class="sourceLineNo">141</span> if (method == HttpAuthenticationMethods.NO_AUTH) {<a name="line.141"></a> |
| <span class="sourceLineNo">142</span> authHandler = HttpAuthenticationMethods.NO_AUTH.getNewHandler(proxyIoSession);<a name="line.142"></a> |
| <span class="sourceLineNo">143</span> break;<a name="line.143"></a> |
| <span class="sourceLineNo">144</span> }<a name="line.144"></a> |
| <span class="sourceLineNo">145</span><a name="line.145"></a> |
| <span class="sourceLineNo">146</span> for (String proxyAuthHeader : values) {<a name="line.146"></a> |
| <span class="sourceLineNo">147</span> proxyAuthHeader = proxyAuthHeader.toLowerCase();<a name="line.147"></a> |
| <span class="sourceLineNo">148</span><a name="line.148"></a> |
| <span class="sourceLineNo">149</span> try {<a name="line.149"></a> |
| <span class="sourceLineNo">150</span> // test which auth mechanism to use<a name="line.150"></a> |
| <span class="sourceLineNo">151</span> if (proxyAuthHeader.contains("basic") && method == HttpAuthenticationMethods.BASIC) {<a name="line.151"></a> |
| <span class="sourceLineNo">152</span> authHandler = HttpAuthenticationMethods.BASIC.getNewHandler(proxyIoSession);<a name="line.152"></a> |
| <span class="sourceLineNo">153</span> break;<a name="line.153"></a> |
| <span class="sourceLineNo">154</span> } else if (proxyAuthHeader.contains("digest") && method == HttpAuthenticationMethods.DIGEST) {<a name="line.154"></a> |
| <span class="sourceLineNo">155</span> authHandler = HttpAuthenticationMethods.DIGEST.getNewHandler(proxyIoSession);<a name="line.155"></a> |
| <span class="sourceLineNo">156</span> break;<a name="line.156"></a> |
| <span class="sourceLineNo">157</span> } else if (proxyAuthHeader.contains("ntlm") && method == HttpAuthenticationMethods.NTLM) {<a name="line.157"></a> |
| <span class="sourceLineNo">158</span> authHandler = HttpAuthenticationMethods.NTLM.getNewHandler(proxyIoSession);<a name="line.158"></a> |
| <span class="sourceLineNo">159</span> break;<a name="line.159"></a> |
| <span class="sourceLineNo">160</span> }<a name="line.160"></a> |
| <span class="sourceLineNo">161</span> } catch (Exception ex) {<a name="line.161"></a> |
| <span class="sourceLineNo">162</span> logger.debug("Following exception occured:", ex);<a name="line.162"></a> |
| <span class="sourceLineNo">163</span> }<a name="line.163"></a> |
| <span class="sourceLineNo">164</span> }<a name="line.164"></a> |
| <span class="sourceLineNo">165</span> }<a name="line.165"></a> |
| <span class="sourceLineNo">166</span><a name="line.166"></a> |
| <span class="sourceLineNo">167</span> }<a name="line.167"></a> |
| <span class="sourceLineNo">168</span><a name="line.168"></a> |
| <span class="sourceLineNo">169</span> if (authHandler == null) {<a name="line.169"></a> |
| <span class="sourceLineNo">170</span> throw new ProxyAuthException("Unknown authentication mechanism(s): " + values);<a name="line.170"></a> |
| <span class="sourceLineNo">171</span> }<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> * Handle a HTTP response from the proxy server.<a name="line.175"></a> |
| <span class="sourceLineNo">176</span> * <a name="line.176"></a> |
| <span class="sourceLineNo">177</span> * @param response The proxy response.<a name="line.177"></a> |
| <span class="sourceLineNo">178</span> */<a name="line.178"></a> |
| <span class="sourceLineNo">179</span> @Override<a name="line.179"></a> |
| <span class="sourceLineNo">180</span> public void handleResponse(final HttpProxyResponse response) throws ProxyAuthException {<a name="line.180"></a> |
| <span class="sourceLineNo">181</span> if (!isHandshakeComplete()<a name="line.181"></a> |
| <span class="sourceLineNo">182</span> && ("close".equalsIgnoreCase(StringUtilities.getSingleValuedHeader(response.getHeaders(),<a name="line.182"></a> |
| <span class="sourceLineNo">183</span> "Proxy-Connection")) || "close".equalsIgnoreCase(StringUtilities.getSingleValuedHeader(<a name="line.183"></a> |
| <span class="sourceLineNo">184</span> response.getHeaders(), "Connection")))) {<a name="line.184"></a> |
| <span class="sourceLineNo">185</span> getProxyIoSession().setReconnectionNeeded(true);<a name="line.185"></a> |
| <span class="sourceLineNo">186</span> }<a name="line.186"></a> |
| <span class="sourceLineNo">187</span><a name="line.187"></a> |
| <span class="sourceLineNo">188</span> if (response.getStatusCode() == 407) {<a name="line.188"></a> |
| <span class="sourceLineNo">189</span> if (authHandler == null) {<a name="line.189"></a> |
| <span class="sourceLineNo">190</span> autoSelectAuthHandler(response);<a name="line.190"></a> |
| <span class="sourceLineNo">191</span> }<a name="line.191"></a> |
| <span class="sourceLineNo">192</span> authHandler.handleResponse(response);<a name="line.192"></a> |
| <span class="sourceLineNo">193</span> } else {<a name="line.193"></a> |
| <span class="sourceLineNo">194</span> throw new ProxyAuthException("Error: unexpected response code " + response.getStatusLine()<a name="line.194"></a> |
| <span class="sourceLineNo">195</span> + " received from proxy.");<a name="line.195"></a> |
| <span class="sourceLineNo">196</span> }<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> |
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