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