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| <div id="overview"><a href="../../../../../../../apidocs/org/apache/mina/proxy/handlers/socks/Socks5LogicHandler.html">View Javadoc</a></div><pre> |
| <a class="jxr_linenumber" name="L1" href="#L1">1</a> <em class="jxr_comment">/*</em> |
| <a class="jxr_linenumber" name="L2" href="#L2">2</a> <em class="jxr_comment"> * Licensed to the Apache Software Foundation (ASF) under one</em> |
| <a class="jxr_linenumber" name="L3" href="#L3">3</a> <em class="jxr_comment"> * or more contributor license agreements. See the NOTICE file</em> |
| <a class="jxr_linenumber" name="L4" href="#L4">4</a> <em class="jxr_comment"> * distributed with this work for additional information</em> |
| <a class="jxr_linenumber" name="L5" href="#L5">5</a> <em class="jxr_comment"> * regarding copyright ownership. The ASF licenses this file</em> |
| <a class="jxr_linenumber" name="L6" href="#L6">6</a> <em class="jxr_comment"> * to you under the Apache License, Version 2.0 (the</em> |
| <a class="jxr_linenumber" name="L7" href="#L7">7</a> <em class="jxr_comment"> * "License"); you may not use this file except in compliance</em> |
| <a class="jxr_linenumber" name="L8" href="#L8">8</a> <em class="jxr_comment"> * with the License. You may obtain a copy of the License at</em> |
| <a class="jxr_linenumber" name="L9" href="#L9">9</a> <em class="jxr_comment"> *</em> |
| <a class="jxr_linenumber" name="L10" href="#L10">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 class="jxr_linenumber" name="L11" href="#L11">11</a> <em class="jxr_comment"> *</em> |
| <a class="jxr_linenumber" name="L12" href="#L12">12</a> <em class="jxr_comment"> * Unless required by applicable law or agreed to in writing,</em> |
| <a class="jxr_linenumber" name="L13" href="#L13">13</a> <em class="jxr_comment"> * software distributed under the License is distributed on an</em> |
| <a class="jxr_linenumber" name="L14" href="#L14">14</a> <em class="jxr_comment"> * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY</em> |
| <a class="jxr_linenumber" name="L15" href="#L15">15</a> <em class="jxr_comment"> * KIND, either express or implied. See the License for the</em> |
| <a class="jxr_linenumber" name="L16" href="#L16">16</a> <em class="jxr_comment"> * specific language governing permissions and limitations</em> |
| <a class="jxr_linenumber" name="L17" href="#L17">17</a> <em class="jxr_comment"> * under the License.</em> |
| <a class="jxr_linenumber" name="L18" href="#L18">18</a> <em class="jxr_comment"> *</em> |
| <a class="jxr_linenumber" name="L19" href="#L19">19</a> <em class="jxr_comment"> */</em> |
| <a class="jxr_linenumber" name="L20" href="#L20">20</a> <strong class="jxr_keyword">package</strong> org.apache.mina.proxy.handlers.socks; |
| <a class="jxr_linenumber" name="L21" href="#L21">21</a> |
| <a class="jxr_linenumber" name="L22" href="#L22">22</a> <strong class="jxr_keyword">import</strong> java.io.UnsupportedEncodingException; |
| <a class="jxr_linenumber" name="L23" href="#L23">23</a> <strong class="jxr_keyword">import</strong> java.net.Inet4Address; |
| <a class="jxr_linenumber" name="L24" href="#L24">24</a> <strong class="jxr_keyword">import</strong> java.net.Inet6Address; |
| <a class="jxr_linenumber" name="L25" href="#L25">25</a> <strong class="jxr_keyword">import</strong> java.net.InetSocketAddress; |
| <a class="jxr_linenumber" name="L26" href="#L26">26</a> |
| <a class="jxr_linenumber" name="L27" href="#L27">27</a> <strong class="jxr_keyword">import</strong> org.apache.mina.core.buffer.IoBuffer; |
| <a class="jxr_linenumber" name="L28" href="#L28">28</a> <strong class="jxr_keyword">import</strong> org.apache.mina.core.filterchain.IoFilter.NextFilter; |
| <a class="jxr_linenumber" name="L29" href="#L29">29</a> <strong class="jxr_keyword">import</strong> org.apache.mina.proxy.session.ProxyIoSession; |
| <a class="jxr_linenumber" name="L30" href="#L30">30</a> <strong class="jxr_keyword">import</strong> org.apache.mina.proxy.utils.ByteUtilities; |
| <a class="jxr_linenumber" name="L31" href="#L31">31</a> <strong class="jxr_keyword">import</strong> org.ietf.jgss.GSSContext; |
| <a class="jxr_linenumber" name="L32" href="#L32">32</a> <strong class="jxr_keyword">import</strong> org.ietf.jgss.GSSException; |
| <a class="jxr_linenumber" name="L33" href="#L33">33</a> <strong class="jxr_keyword">import</strong> org.ietf.jgss.GSSManager; |
| <a class="jxr_linenumber" name="L34" href="#L34">34</a> <strong class="jxr_keyword">import</strong> org.ietf.jgss.GSSName; |
| <a class="jxr_linenumber" name="L35" href="#L35">35</a> <strong class="jxr_keyword">import</strong> org.ietf.jgss.Oid; |
| <a class="jxr_linenumber" name="L36" href="#L36">36</a> <strong class="jxr_keyword">import</strong> org.slf4j.Logger; |
| <a class="jxr_linenumber" name="L37" href="#L37">37</a> <strong class="jxr_keyword">import</strong> org.slf4j.LoggerFactory; |
| <a class="jxr_linenumber" name="L38" href="#L38">38</a> |
| <a class="jxr_linenumber" name="L39" href="#L39">39</a> <em class="jxr_javadoccomment">/**</em> |
| <a class="jxr_linenumber" name="L40" href="#L40">40</a> <em class="jxr_javadoccomment"> * Socks5LogicHandler.java - SOCKS5 authentication mechanisms logic handler.</em> |
| <a class="jxr_linenumber" name="L41" href="#L41">41</a> <em class="jxr_javadoccomment"> * </em> |
| <a class="jxr_linenumber" name="L42" href="#L42">42</a> <em class="jxr_javadoccomment"> * @author <a href="<a href="http://mina.apache.org" target="alexandria_uri">http://mina.apache.org</a>">Apache MINA Project</a></em> |
| <a class="jxr_linenumber" name="L43" href="#L43">43</a> <em class="jxr_javadoccomment"> * @since MINA 2.0.0-M3</em> |
| <a class="jxr_linenumber" name="L44" href="#L44">44</a> <em class="jxr_javadoccomment"> */</em> |
| <a class="jxr_linenumber" name="L45" href="#L45">45</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">class</strong> <a name="Socks5LogicHandler" href="../../../../../../org/apache/mina/proxy/handlers/socks/Socks5LogicHandler.html#Socks5LogicHandler">Socks5LogicHandler</a> <strong class="jxr_keyword">extends</strong> <a name="AbstractSocksLogicHandler" href="../../../../../../org/apache/mina/proxy/handlers/socks/AbstractSocksLogicHandler.html#AbstractSocksLogicHandler">AbstractSocksLogicHandler</a> { |
| <a class="jxr_linenumber" name="L46" href="#L46">46</a> |
| <a class="jxr_linenumber" name="L47" href="#L47">47</a> <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">final</strong> Logger LOGGER = LoggerFactory.getLogger(Socks5LogicHandler.<strong class="jxr_keyword">class</strong>); |
| <a class="jxr_linenumber" name="L48" href="#L48">48</a> |
| <a class="jxr_linenumber" name="L49" href="#L49">49</a> <em class="jxr_javadoccomment">/**</em> |
| <a class="jxr_linenumber" name="L50" href="#L50">50</a> <em class="jxr_javadoccomment"> * The selected authentication method attribute key.</em> |
| <a class="jxr_linenumber" name="L51" href="#L51">51</a> <em class="jxr_javadoccomment"> */</em> |
| <a class="jxr_linenumber" name="L52" href="#L52">52</a> <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">final</strong> String SELECTED_AUTH_METHOD = Socks5LogicHandler.<strong class="jxr_keyword">class</strong>.getName() + <span class="jxr_string">".SelectedAuthMethod"</span>; |
| <a class="jxr_linenumber" name="L53" href="#L53">53</a> |
| <a class="jxr_linenumber" name="L54" href="#L54">54</a> <em class="jxr_javadoccomment">/**</em> |
| <a class="jxr_linenumber" name="L55" href="#L55">55</a> <em class="jxr_javadoccomment"> * The current step in the handshake attribute key.</em> |
| <a class="jxr_linenumber" name="L56" href="#L56">56</a> <em class="jxr_javadoccomment"> */</em> |
| <a class="jxr_linenumber" name="L57" href="#L57">57</a> <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">final</strong> String HANDSHAKE_STEP = Socks5LogicHandler.<strong class="jxr_keyword">class</strong>.getName() + <span class="jxr_string">".HandshakeStep"</span>; |
| <a class="jxr_linenumber" name="L58" href="#L58">58</a> |
| <a class="jxr_linenumber" name="L59" href="#L59">59</a> <em class="jxr_javadoccomment">/**</em> |
| <a class="jxr_linenumber" name="L60" href="#L60">60</a> <em class="jxr_javadoccomment"> * The Java GSS-API context attribute key.</em> |
| <a class="jxr_linenumber" name="L61" href="#L61">61</a> <em class="jxr_javadoccomment"> */</em> |
| <a class="jxr_linenumber" name="L62" href="#L62">62</a> <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">final</strong> String GSS_CONTEXT = Socks5LogicHandler.<strong class="jxr_keyword">class</strong>.getName() + <span class="jxr_string">".GSSContext"</span>; |
| <a class="jxr_linenumber" name="L63" href="#L63">63</a> |
| <a class="jxr_linenumber" name="L64" href="#L64">64</a> <em class="jxr_javadoccomment">/**</em> |
| <a class="jxr_linenumber" name="L65" href="#L65">65</a> <em class="jxr_javadoccomment"> * Last GSS token received attribute key.</em> |
| <a class="jxr_linenumber" name="L66" href="#L66">66</a> <em class="jxr_javadoccomment"> */</em> |
| <a class="jxr_linenumber" name="L67" href="#L67">67</a> <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">final</strong> String GSS_TOKEN = Socks5LogicHandler.<strong class="jxr_keyword">class</strong>.getName() + <span class="jxr_string">".GSSToken"</span>; |
| <a class="jxr_linenumber" name="L68" href="#L68">68</a> |
| <a class="jxr_linenumber" name="L69" href="#L69">69</a> <em class="jxr_javadoccomment">/**</em> |
| <a class="jxr_linenumber" name="L70" href="#L70">70</a> <em class="jxr_javadoccomment"> * @see AbstractSocksLogicHandler#AbstractSocksLogicHandler(ProxyIoSession)</em> |
| <a class="jxr_linenumber" name="L71" href="#L71">71</a> <em class="jxr_javadoccomment"> * </em> |
| <a class="jxr_linenumber" name="L72" href="#L72">72</a> <em class="jxr_javadoccomment"> * @param proxyIoSession The original session</em> |
| <a class="jxr_linenumber" name="L73" href="#L73">73</a> <em class="jxr_javadoccomment"> */</em> |
| <a class="jxr_linenumber" name="L74" href="#L74">74</a> <strong class="jxr_keyword">public</strong> <a name="Socks5LogicHandler" href="../../../../../../org/apache/mina/proxy/handlers/socks/Socks5LogicHandler.html#Socks5LogicHandler">Socks5LogicHandler</a>(<strong class="jxr_keyword">final</strong> <a name="ProxyIoSession" href="../../../../../../org/apache/mina/proxy/session/ProxyIoSession.html#ProxyIoSession">ProxyIoSession</a> proxyIoSession) { |
| <a class="jxr_linenumber" name="L75" href="#L75">75</a> <strong class="jxr_keyword">super</strong>(proxyIoSession); |
| <a class="jxr_linenumber" name="L76" href="#L76">76</a> getSession().setAttribute(HANDSHAKE_STEP, SocksProxyConstants.SOCKS5_GREETING_STEP); |
| <a class="jxr_linenumber" name="L77" href="#L77">77</a> } |
| <a class="jxr_linenumber" name="L78" href="#L78">78</a> |
| <a class="jxr_linenumber" name="L79" href="#L79">79</a> <em class="jxr_javadoccomment">/**</em> |
| <a class="jxr_linenumber" name="L80" href="#L80">80</a> <em class="jxr_javadoccomment"> * Performs the handshake process.</em> |
| <a class="jxr_linenumber" name="L81" href="#L81">81</a> <em class="jxr_javadoccomment"> * </em> |
| <a class="jxr_linenumber" name="L82" href="#L82">82</a> <em class="jxr_javadoccomment"> * @param nextFilter the next filter</em> |
| <a class="jxr_linenumber" name="L83" href="#L83">83</a> <em class="jxr_javadoccomment"> */</em> |
| <a class="jxr_linenumber" name="L84" href="#L84">84</a> @Override |
| <a class="jxr_linenumber" name="L85" href="#L85">85</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">synchronized</strong> <strong class="jxr_keyword">void</strong> doHandshake(<strong class="jxr_keyword">final</strong> NextFilter nextFilter) { |
| <a class="jxr_linenumber" name="L86" href="#L86">86</a> <strong class="jxr_keyword">if</strong> (LOGGER.isDebugEnabled()) { |
| <a class="jxr_linenumber" name="L87" href="#L87">87</a> LOGGER.debug(<span class="jxr_string">" doHandshake()"</span>); |
| <a class="jxr_linenumber" name="L88" href="#L88">88</a> } |
| <a class="jxr_linenumber" name="L89" href="#L89">89</a> |
| <a class="jxr_linenumber" name="L90" href="#L90">90</a> <em class="jxr_comment">// Send request</em> |
| <a class="jxr_linenumber" name="L91" href="#L91">91</a> writeRequest(nextFilter, request, ((Integer) getSession().getAttribute(HANDSHAKE_STEP)).intValue()); |
| <a class="jxr_linenumber" name="L92" href="#L92">92</a> } |
| <a class="jxr_linenumber" name="L93" href="#L93">93</a> |
| <a class="jxr_linenumber" name="L94" href="#L94">94</a> <em class="jxr_javadoccomment">/**</em> |
| <a class="jxr_linenumber" name="L95" href="#L95">95</a> <em class="jxr_javadoccomment"> * Encodes the initial greeting packet.</em> |
| <a class="jxr_linenumber" name="L96" href="#L96">96</a> <em class="jxr_javadoccomment"> * </em> |
| <a class="jxr_linenumber" name="L97" href="#L97">97</a> <em class="jxr_javadoccomment"> * @param request the socks proxy request data</em> |
| <a class="jxr_linenumber" name="L98" href="#L98">98</a> <em class="jxr_javadoccomment"> * @return the encoded buffer</em> |
| <a class="jxr_linenumber" name="L99" href="#L99">99</a> <em class="jxr_javadoccomment"> */</em> |
| <a class="jxr_linenumber" name="L100" href="#L100">100</a> <strong class="jxr_keyword">private</strong> <a name="IoBuffer" href="../../../../../../org/apache/mina/core/buffer/IoBuffer.html#IoBuffer">IoBuffer</a> encodeInitialGreetingPacket(<strong class="jxr_keyword">final</strong> <a name="SocksProxyRequest" href="../../../../../../org/apache/mina/proxy/handlers/socks/SocksProxyRequest.html#SocksProxyRequest">SocksProxyRequest</a> request) { |
| <a class="jxr_linenumber" name="L101" href="#L101">101</a> byte nbMethods = (byte) SocksProxyConstants.SUPPORTED_AUTH_METHODS.length; |
| <a class="jxr_linenumber" name="L102" href="#L102">102</a> <a name="IoBuffer" href="../../../../../../org/apache/mina/core/buffer/IoBuffer.html#IoBuffer">IoBuffer</a> buf = IoBuffer.allocate(2 + nbMethods); |
| <a class="jxr_linenumber" name="L103" href="#L103">103</a> |
| <a class="jxr_linenumber" name="L104" href="#L104">104</a> buf.put(request.getProtocolVersion()); |
| <a class="jxr_linenumber" name="L105" href="#L105">105</a> buf.put(nbMethods); |
| <a class="jxr_linenumber" name="L106" href="#L106">106</a> buf.put(SocksProxyConstants.SUPPORTED_AUTH_METHODS); |
| <a class="jxr_linenumber" name="L107" href="#L107">107</a> |
| <a class="jxr_linenumber" name="L108" href="#L108">108</a> <strong class="jxr_keyword">return</strong> buf; |
| <a class="jxr_linenumber" name="L109" href="#L109">109</a> } |
| <a class="jxr_linenumber" name="L110" href="#L110">110</a> |
| <a class="jxr_linenumber" name="L111" href="#L111">111</a> <em class="jxr_javadoccomment">/**</em> |
| <a class="jxr_linenumber" name="L112" href="#L112">112</a> <em class="jxr_javadoccomment"> * Encodes the proxy authorization request packet.</em> |
| <a class="jxr_linenumber" name="L113" href="#L113">113</a> <em class="jxr_javadoccomment"> * </em> |
| <a class="jxr_linenumber" name="L114" href="#L114">114</a> <em class="jxr_javadoccomment"> * @param request the socks proxy request data</em> |
| <a class="jxr_linenumber" name="L115" href="#L115">115</a> <em class="jxr_javadoccomment"> * @return the encoded buffer</em> |
| <a class="jxr_linenumber" name="L116" href="#L116">116</a> <em class="jxr_javadoccomment"> * @throws UnsupportedEncodingException if request's hostname charset </em> |
| <a class="jxr_linenumber" name="L117" href="#L117">117</a> <em class="jxr_javadoccomment"> * can't be converted to ASCII. </em> |
| <a class="jxr_linenumber" name="L118" href="#L118">118</a> <em class="jxr_javadoccomment"> */</em> |
| <a class="jxr_linenumber" name="L119" href="#L119">119</a> <strong class="jxr_keyword">private</strong> <a name="IoBuffer" href="../../../../../../org/apache/mina/core/buffer/IoBuffer.html#IoBuffer">IoBuffer</a> encodeProxyRequestPacket(<strong class="jxr_keyword">final</strong> <a name="SocksProxyRequest" href="../../../../../../org/apache/mina/proxy/handlers/socks/SocksProxyRequest.html#SocksProxyRequest">SocksProxyRequest</a> request) <strong class="jxr_keyword">throws</strong> UnsupportedEncodingException { |
| <a class="jxr_linenumber" name="L120" href="#L120">120</a> <strong class="jxr_keyword">int</strong> len = 6; |
| <a class="jxr_linenumber" name="L121" href="#L121">121</a> InetSocketAddress adr = request.getEndpointAddress(); |
| <a class="jxr_linenumber" name="L122" href="#L122">122</a> byte addressType = 0; |
| <a class="jxr_linenumber" name="L123" href="#L123">123</a> byte[] host = <strong class="jxr_keyword">null</strong>; |
| <a class="jxr_linenumber" name="L124" href="#L124">124</a> |
| <a class="jxr_linenumber" name="L125" href="#L125">125</a> <strong class="jxr_keyword">if</strong> (adr != <strong class="jxr_keyword">null</strong> && !adr.isUnresolved()) { |
| <a class="jxr_linenumber" name="L126" href="#L126">126</a> <strong class="jxr_keyword">if</strong> (adr.getAddress() instanceof Inet6Address) { |
| <a class="jxr_linenumber" name="L127" href="#L127">127</a> len += 16; |
| <a class="jxr_linenumber" name="L128" href="#L128">128</a> addressType = SocksProxyConstants.IPV6_ADDRESS_TYPE; |
| <a class="jxr_linenumber" name="L129" href="#L129">129</a> } <strong class="jxr_keyword">else</strong> <strong class="jxr_keyword">if</strong> (adr.getAddress() instanceof Inet4Address) { |
| <a class="jxr_linenumber" name="L130" href="#L130">130</a> len += 4; |
| <a class="jxr_linenumber" name="L131" href="#L131">131</a> addressType = SocksProxyConstants.IPV4_ADDRESS_TYPE; |
| <a class="jxr_linenumber" name="L132" href="#L132">132</a> } |
| <a class="jxr_linenumber" name="L133" href="#L133">133</a> } <strong class="jxr_keyword">else</strong> { |
| <a class="jxr_linenumber" name="L134" href="#L134">134</a> host = request.getHost() != <strong class="jxr_keyword">null</strong> ? request.getHost().getBytes(<span class="jxr_string">"ASCII"</span>) : <strong class="jxr_keyword">null</strong>; |
| <a class="jxr_linenumber" name="L135" href="#L135">135</a> |
| <a class="jxr_linenumber" name="L136" href="#L136">136</a> <strong class="jxr_keyword">if</strong> (host != <strong class="jxr_keyword">null</strong>) { |
| <a class="jxr_linenumber" name="L137" href="#L137">137</a> len += 1 + host.length; |
| <a class="jxr_linenumber" name="L138" href="#L138">138</a> addressType = SocksProxyConstants.DOMAIN_NAME_ADDRESS_TYPE; |
| <a class="jxr_linenumber" name="L139" href="#L139">139</a> } <strong class="jxr_keyword">else</strong> { |
| <a class="jxr_linenumber" name="L140" href="#L140">140</a> <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> IllegalArgumentException(<span class="jxr_string">"SocksProxyRequest object "</span> + <span class="jxr_string">"has no suitable endpoint information"</span>); |
| <a class="jxr_linenumber" name="L141" href="#L141">141</a> } |
| <a class="jxr_linenumber" name="L142" href="#L142">142</a> } |
| <a class="jxr_linenumber" name="L143" href="#L143">143</a> |
| <a class="jxr_linenumber" name="L144" href="#L144">144</a> <a name="IoBuffer" href="../../../../../../org/apache/mina/core/buffer/IoBuffer.html#IoBuffer">IoBuffer</a> buf = IoBuffer.allocate(len); |
| <a class="jxr_linenumber" name="L145" href="#L145">145</a> |
| <a class="jxr_linenumber" name="L146" href="#L146">146</a> buf.put(request.getProtocolVersion()); |
| <a class="jxr_linenumber" name="L147" href="#L147">147</a> buf.put(request.getCommandCode()); |
| <a class="jxr_linenumber" name="L148" href="#L148">148</a> buf.put((byte) 0x00); <em class="jxr_comment">// Reserved</em> |
| <a class="jxr_linenumber" name="L149" href="#L149">149</a> buf.put(addressType); |
| <a class="jxr_linenumber" name="L150" href="#L150">150</a> |
| <a class="jxr_linenumber" name="L151" href="#L151">151</a> <strong class="jxr_keyword">if</strong> (host == <strong class="jxr_keyword">null</strong>) { |
| <a class="jxr_linenumber" name="L152" href="#L152">152</a> buf.put(request.getIpAddress()); |
| <a class="jxr_linenumber" name="L153" href="#L153">153</a> } <strong class="jxr_keyword">else</strong> { |
| <a class="jxr_linenumber" name="L154" href="#L154">154</a> buf.put((byte) host.length); |
| <a class="jxr_linenumber" name="L155" href="#L155">155</a> buf.put(host); |
| <a class="jxr_linenumber" name="L156" href="#L156">156</a> } |
| <a class="jxr_linenumber" name="L157" href="#L157">157</a> |
| <a class="jxr_linenumber" name="L158" href="#L158">158</a> buf.put(request.getPort()); |
| <a class="jxr_linenumber" name="L159" href="#L159">159</a> |
| <a class="jxr_linenumber" name="L160" href="#L160">160</a> <strong class="jxr_keyword">return</strong> buf; |
| <a class="jxr_linenumber" name="L161" href="#L161">161</a> } |
| <a class="jxr_linenumber" name="L162" href="#L162">162</a> |
| <a class="jxr_linenumber" name="L163" href="#L163">163</a> <em class="jxr_javadoccomment">/**</em> |
| <a class="jxr_linenumber" name="L164" href="#L164">164</a> <em class="jxr_javadoccomment"> * Encodes the authentication packet for supported authentication methods.</em> |
| <a class="jxr_linenumber" name="L165" href="#L165">165</a> <em class="jxr_javadoccomment"> * </em> |
| <a class="jxr_linenumber" name="L166" href="#L166">166</a> <em class="jxr_javadoccomment"> * @param request the socks proxy request data</em> |
| <a class="jxr_linenumber" name="L167" href="#L167">167</a> <em class="jxr_javadoccomment"> * @return the encoded buffer, if null then authentication step is over </em> |
| <a class="jxr_linenumber" name="L168" href="#L168">168</a> <em class="jxr_javadoccomment"> * and handshake process can jump immediately to the next step without waiting</em> |
| <a class="jxr_linenumber" name="L169" href="#L169">169</a> <em class="jxr_javadoccomment"> * for a server reply.</em> |
| <a class="jxr_linenumber" name="L170" href="#L170">170</a> <em class="jxr_javadoccomment"> * @throws UnsupportedEncodingException if some string charset convertion fails</em> |
| <a class="jxr_linenumber" name="L171" href="#L171">171</a> <em class="jxr_javadoccomment"> * @throws GSSException when something fails while using GSSAPI</em> |
| <a class="jxr_linenumber" name="L172" href="#L172">172</a> <em class="jxr_javadoccomment"> */</em> |
| <a class="jxr_linenumber" name="L173" href="#L173">173</a> <strong class="jxr_keyword">private</strong> <a name="IoBuffer" href="../../../../../../org/apache/mina/core/buffer/IoBuffer.html#IoBuffer">IoBuffer</a> encodeAuthenticationPacket(<strong class="jxr_keyword">final</strong> <a name="SocksProxyRequest" href="../../../../../../org/apache/mina/proxy/handlers/socks/SocksProxyRequest.html#SocksProxyRequest">SocksProxyRequest</a> request) <strong class="jxr_keyword">throws</strong> UnsupportedEncodingException, |
| <a class="jxr_linenumber" name="L174" href="#L174">174</a> GSSException { |
| <a class="jxr_linenumber" name="L175" href="#L175">175</a> byte method = ((Byte) getSession().getAttribute(Socks5LogicHandler.SELECTED_AUTH_METHOD)).byteValue(); |
| <a class="jxr_linenumber" name="L176" href="#L176">176</a> |
| <a class="jxr_linenumber" name="L177" href="#L177">177</a> <strong class="jxr_keyword">switch</strong> (method) { |
| <a class="jxr_linenumber" name="L178" href="#L178">178</a> <strong class="jxr_keyword">case</strong> SocksProxyConstants.NO_AUTH: |
| <a class="jxr_linenumber" name="L179" href="#L179">179</a> <em class="jxr_comment">// In this case authentication is immediately considered as successfull</em> |
| <a class="jxr_linenumber" name="L180" href="#L180">180</a> <em class="jxr_comment">// Next writeRequest() call will send the proxy request</em> |
| <a class="jxr_linenumber" name="L181" href="#L181">181</a> getSession().setAttribute(HANDSHAKE_STEP, SocksProxyConstants.SOCKS5_REQUEST_STEP); |
| <a class="jxr_linenumber" name="L182" href="#L182">182</a> <strong class="jxr_keyword">break</strong>; |
| <a class="jxr_linenumber" name="L183" href="#L183">183</a> |
| <a class="jxr_linenumber" name="L184" href="#L184">184</a> <strong class="jxr_keyword">case</strong> SocksProxyConstants.GSSAPI_AUTH: |
| <a class="jxr_linenumber" name="L185" href="#L185">185</a> <strong class="jxr_keyword">return</strong> encodeGSSAPIAuthenticationPacket(request); |
| <a class="jxr_linenumber" name="L186" href="#L186">186</a> |
| <a class="jxr_linenumber" name="L187" href="#L187">187</a> <strong class="jxr_keyword">case</strong> SocksProxyConstants.BASIC_AUTH: |
| <a class="jxr_linenumber" name="L188" href="#L188">188</a> <em class="jxr_comment">// The basic auth scheme packet is sent</em> |
| <a class="jxr_linenumber" name="L189" href="#L189">189</a> byte[] user = request.getUserName().getBytes(<span class="jxr_string">"ASCII"</span>); |
| <a class="jxr_linenumber" name="L190" href="#L190">190</a> byte[] pwd = request.getPassword().getBytes(<span class="jxr_string">"ASCII"</span>); |
| <a class="jxr_linenumber" name="L191" href="#L191">191</a> <a name="IoBuffer" href="../../../../../../org/apache/mina/core/buffer/IoBuffer.html#IoBuffer">IoBuffer</a> buf = IoBuffer.allocate(3 + user.length + pwd.length); |
| <a class="jxr_linenumber" name="L192" href="#L192">192</a> |
| <a class="jxr_linenumber" name="L193" href="#L193">193</a> buf.put(SocksProxyConstants.BASIC_AUTH_SUBNEGOTIATION_VERSION); |
| <a class="jxr_linenumber" name="L194" href="#L194">194</a> buf.put((byte) user.length); |
| <a class="jxr_linenumber" name="L195" href="#L195">195</a> buf.put(user); |
| <a class="jxr_linenumber" name="L196" href="#L196">196</a> buf.put((byte) pwd.length); |
| <a class="jxr_linenumber" name="L197" href="#L197">197</a> buf.put(pwd); |
| <a class="jxr_linenumber" name="L198" href="#L198">198</a> |
| <a class="jxr_linenumber" name="L199" href="#L199">199</a> <strong class="jxr_keyword">return</strong> buf; |
| <a class="jxr_linenumber" name="L200" href="#L200">200</a> } |
| <a class="jxr_linenumber" name="L201" href="#L201">201</a> |
| <a class="jxr_linenumber" name="L202" href="#L202">202</a> <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">null</strong>; |
| <a class="jxr_linenumber" name="L203" href="#L203">203</a> } |
| <a class="jxr_linenumber" name="L204" href="#L204">204</a> |
| <a class="jxr_linenumber" name="L205" href="#L205">205</a> <em class="jxr_javadoccomment">/**</em> |
| <a class="jxr_linenumber" name="L206" href="#L206">206</a> <em class="jxr_javadoccomment"> * Encodes the authentication packet for supported authentication methods.</em> |
| <a class="jxr_linenumber" name="L207" href="#L207">207</a> <em class="jxr_javadoccomment"> * </em> |
| <a class="jxr_linenumber" name="L208" href="#L208">208</a> <em class="jxr_javadoccomment"> * @param request the socks proxy request data</em> |
| <a class="jxr_linenumber" name="L209" href="#L209">209</a> <em class="jxr_javadoccomment"> * @return the encoded buffer</em> |
| <a class="jxr_linenumber" name="L210" href="#L210">210</a> <em class="jxr_javadoccomment"> * @throws GSSException when something fails while using GSSAPI</em> |
| <a class="jxr_linenumber" name="L211" href="#L211">211</a> <em class="jxr_javadoccomment"> */</em> |
| <a class="jxr_linenumber" name="L212" href="#L212">212</a> <strong class="jxr_keyword">private</strong> <a name="IoBuffer" href="../../../../../../org/apache/mina/core/buffer/IoBuffer.html#IoBuffer">IoBuffer</a> encodeGSSAPIAuthenticationPacket(<strong class="jxr_keyword">final</strong> <a name="SocksProxyRequest" href="../../../../../../org/apache/mina/proxy/handlers/socks/SocksProxyRequest.html#SocksProxyRequest">SocksProxyRequest</a> request) <strong class="jxr_keyword">throws</strong> GSSException { |
| <a class="jxr_linenumber" name="L213" href="#L213">213</a> GSSContext ctx = (GSSContext) getSession().getAttribute(GSS_CONTEXT); |
| <a class="jxr_linenumber" name="L214" href="#L214">214</a> <strong class="jxr_keyword">if</strong> (ctx == <strong class="jxr_keyword">null</strong>) { |
| <a class="jxr_linenumber" name="L215" href="#L215">215</a> <em class="jxr_comment">// first step in the authentication process</em> |
| <a class="jxr_linenumber" name="L216" href="#L216">216</a> GSSManager manager = GSSManager.getInstance(); |
| <a class="jxr_linenumber" name="L217" href="#L217">217</a> GSSName serverName = manager.createName(request.getServiceKerberosName(), <strong class="jxr_keyword">null</strong>); |
| <a class="jxr_linenumber" name="L218" href="#L218">218</a> Oid krb5OID = <strong class="jxr_keyword">new</strong> Oid(SocksProxyConstants.KERBEROS_V5_OID); |
| <a class="jxr_linenumber" name="L219" href="#L219">219</a> |
| <a class="jxr_linenumber" name="L220" href="#L220">220</a> <strong class="jxr_keyword">if</strong> (LOGGER.isDebugEnabled()) { |
| <a class="jxr_linenumber" name="L221" href="#L221">221</a> LOGGER.debug(<span class="jxr_string">"Available mechs:"</span>); |
| <a class="jxr_linenumber" name="L222" href="#L222">222</a> <strong class="jxr_keyword">for</strong> (Oid o : manager.getMechs()) { |
| <a class="jxr_linenumber" name="L223" href="#L223">223</a> <strong class="jxr_keyword">if</strong> (o.equals(krb5OID)) { |
| <a class="jxr_linenumber" name="L224" href="#L224">224</a> LOGGER.debug(<span class="jxr_string">"Found Kerberos V OID available"</span>); |
| <a class="jxr_linenumber" name="L225" href="#L225">225</a> } |
| <a class="jxr_linenumber" name="L226" href="#L226">226</a> LOGGER.debug(<span class="jxr_string">"{} with oid = {}"</span>, manager.getNamesForMech(o), o); |
| <a class="jxr_linenumber" name="L227" href="#L227">227</a> } |
| <a class="jxr_linenumber" name="L228" href="#L228">228</a> } |
| <a class="jxr_linenumber" name="L229" href="#L229">229</a> |
| <a class="jxr_linenumber" name="L230" href="#L230">230</a> ctx = manager.createContext(serverName, krb5OID, <strong class="jxr_keyword">null</strong>, GSSContext.DEFAULT_LIFETIME); |
| <a class="jxr_linenumber" name="L231" href="#L231">231</a> |
| <a class="jxr_linenumber" name="L232" href="#L232">232</a> ctx.requestMutualAuth(<strong class="jxr_keyword">true</strong>); <em class="jxr_comment">// Mutual authentication</em> |
| <a class="jxr_linenumber" name="L233" href="#L233">233</a> ctx.requestConf(false); |
| <a class="jxr_linenumber" name="L234" href="#L234">234</a> ctx.requestInteg(false); |
| <a class="jxr_linenumber" name="L235" href="#L235">235</a> |
| <a class="jxr_linenumber" name="L236" href="#L236">236</a> getSession().setAttribute(GSS_CONTEXT, ctx); |
| <a class="jxr_linenumber" name="L237" href="#L237">237</a> } |
| <a class="jxr_linenumber" name="L238" href="#L238">238</a> |
| <a class="jxr_linenumber" name="L239" href="#L239">239</a> byte[] token = (byte[]) getSession().getAttribute(GSS_TOKEN); |
| <a class="jxr_linenumber" name="L240" href="#L240">240</a> <strong class="jxr_keyword">if</strong> (token != <strong class="jxr_keyword">null</strong>) { |
| <a class="jxr_linenumber" name="L241" href="#L241">241</a> <strong class="jxr_keyword">if</strong> (LOGGER.isDebugEnabled()) { |
| <a class="jxr_linenumber" name="L242" href="#L242">242</a> LOGGER.debug(<span class="jxr_string">" Received Token[{}] = {}"</span>, token.length, ByteUtilities.asHex(token)); |
| <a class="jxr_linenumber" name="L243" href="#L243">243</a> } |
| <a class="jxr_linenumber" name="L244" href="#L244">244</a> } |
| <a class="jxr_linenumber" name="L245" href="#L245">245</a> <a name="IoBuffer" href="../../../../../../org/apache/mina/core/buffer/IoBuffer.html#IoBuffer">IoBuffer</a> buf = <strong class="jxr_keyword">null</strong>; |
| <a class="jxr_linenumber" name="L246" href="#L246">246</a> |
| <a class="jxr_linenumber" name="L247" href="#L247">247</a> <strong class="jxr_keyword">if</strong> (!ctx.isEstablished()) { |
| <a class="jxr_linenumber" name="L248" href="#L248">248</a> <em class="jxr_comment">// token is ignored on the first call</em> |
| <a class="jxr_linenumber" name="L249" href="#L249">249</a> <strong class="jxr_keyword">if</strong> (token == <strong class="jxr_keyword">null</strong>) { |
| <a class="jxr_linenumber" name="L250" href="#L250">250</a> token = <strong class="jxr_keyword">new</strong> byte[32]; |
| <a class="jxr_linenumber" name="L251" href="#L251">251</a> } |
| <a class="jxr_linenumber" name="L252" href="#L252">252</a> |
| <a class="jxr_linenumber" name="L253" href="#L253">253</a> token = ctx.initSecContext(token, 0, token.length); |
| <a class="jxr_linenumber" name="L254" href="#L254">254</a> |
| <a class="jxr_linenumber" name="L255" href="#L255">255</a> <em class="jxr_comment">// Send a token to the server if one was generated by</em> |
| <a class="jxr_linenumber" name="L256" href="#L256">256</a> <em class="jxr_comment">// initSecContext</em> |
| <a class="jxr_linenumber" name="L257" href="#L257">257</a> <strong class="jxr_keyword">if</strong> (token != <strong class="jxr_keyword">null</strong>) { |
| <a class="jxr_linenumber" name="L258" href="#L258">258</a> <strong class="jxr_keyword">if</strong> (LOGGER.isDebugEnabled()) { |
| <a class="jxr_linenumber" name="L259" href="#L259">259</a> LOGGER.debug(<span class="jxr_string">" Sending Token[{}] = {}"</span>, token.length, ByteUtilities.asHex(token)); |
| <a class="jxr_linenumber" name="L260" href="#L260">260</a> } |
| <a class="jxr_linenumber" name="L261" href="#L261">261</a> |
| <a class="jxr_linenumber" name="L262" href="#L262">262</a> getSession().setAttribute(GSS_TOKEN, token); |
| <a class="jxr_linenumber" name="L263" href="#L263">263</a> buf = IoBuffer.allocate(4 + token.length); |
| <a class="jxr_linenumber" name="L264" href="#L264">264</a> buf.put(<strong class="jxr_keyword">new</strong> byte[] { SocksProxyConstants.GSSAPI_AUTH_SUBNEGOTIATION_VERSION, |
| <a class="jxr_linenumber" name="L265" href="#L265">265</a> SocksProxyConstants.GSSAPI_MSG_TYPE }); |
| <a class="jxr_linenumber" name="L266" href="#L266">266</a> |
| <a class="jxr_linenumber" name="L267" href="#L267">267</a> buf.put(ByteUtilities.intToNetworkByteOrder(token.length, 2)); |
| <a class="jxr_linenumber" name="L268" href="#L268">268</a> buf.put(token); |
| <a class="jxr_linenumber" name="L269" href="#L269">269</a> } |
| <a class="jxr_linenumber" name="L270" href="#L270">270</a> } |
| <a class="jxr_linenumber" name="L271" href="#L271">271</a> |
| <a class="jxr_linenumber" name="L272" href="#L272">272</a> <strong class="jxr_keyword">return</strong> buf; |
| <a class="jxr_linenumber" name="L273" href="#L273">273</a> } |
| <a class="jxr_linenumber" name="L274" href="#L274">274</a> |
| <a class="jxr_linenumber" name="L275" href="#L275">275</a> <em class="jxr_javadoccomment">/**</em> |
| <a class="jxr_linenumber" name="L276" href="#L276">276</a> <em class="jxr_javadoccomment"> * Encodes a SOCKS5 request and writes it to the next filter</em> |
| <a class="jxr_linenumber" name="L277" href="#L277">277</a> <em class="jxr_javadoccomment"> * so it can be sent to the proxy server.</em> |
| <a class="jxr_linenumber" name="L278" href="#L278">278</a> <em class="jxr_javadoccomment"> * </em> |
| <a class="jxr_linenumber" name="L279" href="#L279">279</a> <em class="jxr_javadoccomment"> * @param nextFilter the next filter</em> |
| <a class="jxr_linenumber" name="L280" href="#L280">280</a> <em class="jxr_javadoccomment"> * @param request the request to send.</em> |
| <a class="jxr_linenumber" name="L281" href="#L281">281</a> <em class="jxr_javadoccomment"> * @param step the current step in the handshake process</em> |
| <a class="jxr_linenumber" name="L282" href="#L282">282</a> <em class="jxr_javadoccomment"> */</em> |
| <a class="jxr_linenumber" name="L283" href="#L283">283</a> <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">void</strong> writeRequest(<strong class="jxr_keyword">final</strong> NextFilter nextFilter, <strong class="jxr_keyword">final</strong> <a name="SocksProxyRequest" href="../../../../../../org/apache/mina/proxy/handlers/socks/SocksProxyRequest.html#SocksProxyRequest">SocksProxyRequest</a> request, <strong class="jxr_keyword">int</strong> step) { |
| <a class="jxr_linenumber" name="L284" href="#L284">284</a> <strong class="jxr_keyword">try</strong> { |
| <a class="jxr_linenumber" name="L285" href="#L285">285</a> <a name="IoBuffer" href="../../../../../../org/apache/mina/core/buffer/IoBuffer.html#IoBuffer">IoBuffer</a> buf = <strong class="jxr_keyword">null</strong>; |
| <a class="jxr_linenumber" name="L286" href="#L286">286</a> |
| <a class="jxr_linenumber" name="L287" href="#L287">287</a> <strong class="jxr_keyword">if</strong> (step == SocksProxyConstants.SOCKS5_GREETING_STEP) { |
| <a class="jxr_linenumber" name="L288" href="#L288">288</a> buf = encodeInitialGreetingPacket(request); |
| <a class="jxr_linenumber" name="L289" href="#L289">289</a> } <strong class="jxr_keyword">else</strong> <strong class="jxr_keyword">if</strong> (step == SocksProxyConstants.SOCKS5_AUTH_STEP) { |
| <a class="jxr_linenumber" name="L290" href="#L290">290</a> <em class="jxr_comment">// This step can happen multiple times like in GSSAPI auth for instance</em> |
| <a class="jxr_linenumber" name="L291" href="#L291">291</a> buf = encodeAuthenticationPacket(request); |
| <a class="jxr_linenumber" name="L292" href="#L292">292</a> |
| <a class="jxr_linenumber" name="L293" href="#L293">293</a> <em class="jxr_comment">// If buf is null then go to the next step</em> |
| <a class="jxr_linenumber" name="L294" href="#L294">294</a> <strong class="jxr_keyword">if</strong> (buf == <strong class="jxr_keyword">null</strong>) { |
| <a class="jxr_linenumber" name="L295" href="#L295">295</a> step = SocksProxyConstants.SOCKS5_REQUEST_STEP; |
| <a class="jxr_linenumber" name="L296" href="#L296">296</a> } |
| <a class="jxr_linenumber" name="L297" href="#L297">297</a> } |
| <a class="jxr_linenumber" name="L298" href="#L298">298</a> |
| <a class="jxr_linenumber" name="L299" href="#L299">299</a> <strong class="jxr_keyword">if</strong> (step == SocksProxyConstants.SOCKS5_REQUEST_STEP) { |
| <a class="jxr_linenumber" name="L300" href="#L300">300</a> buf = encodeProxyRequestPacket(request); |
| <a class="jxr_linenumber" name="L301" href="#L301">301</a> } |
| <a class="jxr_linenumber" name="L302" href="#L302">302</a> |
| <a class="jxr_linenumber" name="L303" href="#L303">303</a> buf.flip(); |
| <a class="jxr_linenumber" name="L304" href="#L304">304</a> writeData(nextFilter, buf); |
| <a class="jxr_linenumber" name="L305" href="#L305">305</a> |
| <a class="jxr_linenumber" name="L306" href="#L306">306</a> } <strong class="jxr_keyword">catch</strong> (Exception ex) { |
| <a class="jxr_linenumber" name="L307" href="#L307">307</a> closeSession(<span class="jxr_string">"Unable to send Socks request: "</span>, ex); |
| <a class="jxr_linenumber" name="L308" href="#L308">308</a> } |
| <a class="jxr_linenumber" name="L309" href="#L309">309</a> } |
| <a class="jxr_linenumber" name="L310" href="#L310">310</a> |
| <a class="jxr_linenumber" name="L311" href="#L311">311</a> <em class="jxr_javadoccomment">/**</em> |
| <a class="jxr_linenumber" name="L312" href="#L312">312</a> <em class="jxr_javadoccomment"> * Handles incoming data during the handshake process. Should consume only the</em> |
| <a class="jxr_linenumber" name="L313" href="#L313">313</a> <em class="jxr_javadoccomment"> * handshake data from the buffer, leaving any extra data in place.</em> |
| <a class="jxr_linenumber" name="L314" href="#L314">314</a> <em class="jxr_javadoccomment"> * </em> |
| <a class="jxr_linenumber" name="L315" href="#L315">315</a> <em class="jxr_javadoccomment"> * @param nextFilter the next filter</em> |
| <a class="jxr_linenumber" name="L316" href="#L316">316</a> <em class="jxr_javadoccomment"> * @param buf the buffered data received </em> |
| <a class="jxr_linenumber" name="L317" href="#L317">317</a> <em class="jxr_javadoccomment"> */</em> |
| <a class="jxr_linenumber" name="L318" href="#L318">318</a> @Override |
| <a class="jxr_linenumber" name="L319" href="#L319">319</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">synchronized</strong> <strong class="jxr_keyword">void</strong> messageReceived(<strong class="jxr_keyword">final</strong> NextFilter nextFilter, <strong class="jxr_keyword">final</strong> <a name="IoBuffer" href="../../../../../../org/apache/mina/core/buffer/IoBuffer.html#IoBuffer">IoBuffer</a> buf) { |
| <a class="jxr_linenumber" name="L320" href="#L320">320</a> <strong class="jxr_keyword">try</strong> { |
| <a class="jxr_linenumber" name="L321" href="#L321">321</a> <strong class="jxr_keyword">int</strong> step = ((Integer) getSession().getAttribute(HANDSHAKE_STEP)).intValue(); |
| <a class="jxr_linenumber" name="L322" href="#L322">322</a> |
| <a class="jxr_linenumber" name="L323" href="#L323">323</a> <strong class="jxr_keyword">if</strong> (step == SocksProxyConstants.SOCKS5_GREETING_STEP && buf.get(0) != SocksProxyConstants.SOCKS_VERSION_5) { |
| <a class="jxr_linenumber" name="L324" href="#L324">324</a> <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> IllegalStateException(<span class="jxr_string">"Wrong socks version running on server"</span>); |
| <a class="jxr_linenumber" name="L325" href="#L325">325</a> } |
| <a class="jxr_linenumber" name="L326" href="#L326">326</a> |
| <a class="jxr_linenumber" name="L327" href="#L327">327</a> <strong class="jxr_keyword">if</strong> ((step == SocksProxyConstants.SOCKS5_GREETING_STEP || step == SocksProxyConstants.SOCKS5_AUTH_STEP) |
| <a class="jxr_linenumber" name="L328" href="#L328">328</a> && buf.remaining() >= 2) { |
| <a class="jxr_linenumber" name="L329" href="#L329">329</a> handleResponse(nextFilter, buf, step); |
| <a class="jxr_linenumber" name="L330" href="#L330">330</a> } <strong class="jxr_keyword">else</strong> <strong class="jxr_keyword">if</strong> (step == SocksProxyConstants.SOCKS5_REQUEST_STEP && buf.remaining() >= 5) { |
| <a class="jxr_linenumber" name="L331" href="#L331">331</a> handleResponse(nextFilter, buf, step); |
| <a class="jxr_linenumber" name="L332" href="#L332">332</a> } |
| <a class="jxr_linenumber" name="L333" href="#L333">333</a> } <strong class="jxr_keyword">catch</strong> (Exception ex) { |
| <a class="jxr_linenumber" name="L334" href="#L334">334</a> closeSession(<span class="jxr_string">"Proxy handshake failed: "</span>, ex); |
| <a class="jxr_linenumber" name="L335" href="#L335">335</a> } |
| <a class="jxr_linenumber" name="L336" href="#L336">336</a> } |
| <a class="jxr_linenumber" name="L337" href="#L337">337</a> |
| <a class="jxr_linenumber" name="L338" href="#L338">338</a> <em class="jxr_javadoccomment">/**</em> |
| <a class="jxr_linenumber" name="L339" href="#L339">339</a> <em class="jxr_javadoccomment"> * Handle a SOCKS v5 response from the proxy server.</em> |
| <a class="jxr_linenumber" name="L340" href="#L340">340</a> <em class="jxr_javadoccomment"> * </em> |
| <a class="jxr_linenumber" name="L341" href="#L341">341</a> <em class="jxr_javadoccomment"> * @param nextFilter the next filter</em> |
| <a class="jxr_linenumber" name="L342" href="#L342">342</a> <em class="jxr_javadoccomment"> * @param buf the buffered data received </em> |
| <a class="jxr_linenumber" name="L343" href="#L343">343</a> <em class="jxr_javadoccomment"> * @param step the current step in the authentication process</em> |
| <a class="jxr_linenumber" name="L344" href="#L344">344</a> <em class="jxr_javadoccomment"> * @throws Exception If something went wrong</em> |
| <a class="jxr_linenumber" name="L345" href="#L345">345</a> <em class="jxr_javadoccomment"> */</em> |
| <a class="jxr_linenumber" name="L346" href="#L346">346</a> <strong class="jxr_keyword">protected</strong> <strong class="jxr_keyword">void</strong> handleResponse(<strong class="jxr_keyword">final</strong> NextFilter nextFilter, <strong class="jxr_keyword">final</strong> <a name="IoBuffer" href="../../../../../../org/apache/mina/core/buffer/IoBuffer.html#IoBuffer">IoBuffer</a> buf, <strong class="jxr_keyword">int</strong> step) <strong class="jxr_keyword">throws</strong> Exception { |
| <a class="jxr_linenumber" name="L347" href="#L347">347</a> <strong class="jxr_keyword">int</strong> len = 2; |
| <a class="jxr_linenumber" name="L348" href="#L348">348</a> <strong class="jxr_keyword">if</strong> (step == SocksProxyConstants.SOCKS5_GREETING_STEP) { |
| <a class="jxr_linenumber" name="L349" href="#L349">349</a> <em class="jxr_comment">// Send greeting message</em> |
| <a class="jxr_linenumber" name="L350" href="#L350">350</a> byte method = buf.get(1); |
| <a class="jxr_linenumber" name="L351" href="#L351">351</a> |
| <a class="jxr_linenumber" name="L352" href="#L352">352</a> <strong class="jxr_keyword">if</strong> (method == SocksProxyConstants.NO_ACCEPTABLE_AUTH_METHOD) { |
| <a class="jxr_linenumber" name="L353" href="#L353">353</a> <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> IllegalStateException(<span class="jxr_string">"No acceptable authentication method to use with "</span> |
| <a class="jxr_linenumber" name="L354" href="#L354">354</a> + <span class="jxr_string">"the socks proxy server"</span>); |
| <a class="jxr_linenumber" name="L355" href="#L355">355</a> } |
| <a class="jxr_linenumber" name="L356" href="#L356">356</a> |
| <a class="jxr_linenumber" name="L357" href="#L357">357</a> getSession().setAttribute(SELECTED_AUTH_METHOD, Byte.valueOf(method)); |
| <a class="jxr_linenumber" name="L358" href="#L358">358</a> |
| <a class="jxr_linenumber" name="L359" href="#L359">359</a> } <strong class="jxr_keyword">else</strong> <strong class="jxr_keyword">if</strong> (step == SocksProxyConstants.SOCKS5_AUTH_STEP) { |
| <a class="jxr_linenumber" name="L360" href="#L360">360</a> <em class="jxr_comment">// Authentication to the SOCKS server </em> |
| <a class="jxr_linenumber" name="L361" href="#L361">361</a> byte method = ((Byte) getSession().getAttribute(Socks5LogicHandler.SELECTED_AUTH_METHOD)).byteValue(); |
| <a class="jxr_linenumber" name="L362" href="#L362">362</a> |
| <a class="jxr_linenumber" name="L363" href="#L363">363</a> <strong class="jxr_keyword">if</strong> (method == SocksProxyConstants.GSSAPI_AUTH) { |
| <a class="jxr_linenumber" name="L364" href="#L364">364</a> <strong class="jxr_keyword">int</strong> oldPos = buf.position(); |
| <a class="jxr_linenumber" name="L365" href="#L365">365</a> |
| <a class="jxr_linenumber" name="L366" href="#L366">366</a> <strong class="jxr_keyword">if</strong> (buf.get(0) != 0x01) { |
| <a class="jxr_linenumber" name="L367" href="#L367">367</a> <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> IllegalStateException(<span class="jxr_string">"Authentication failed"</span>); |
| <a class="jxr_linenumber" name="L368" href="#L368">368</a> } |
| <a class="jxr_linenumber" name="L369" href="#L369">369</a> <strong class="jxr_keyword">if</strong> ((buf.get(1) & 0x00FF) == 0x00FF) { |
| <a class="jxr_linenumber" name="L370" href="#L370">370</a> <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> IllegalStateException(<span class="jxr_string">"Authentication failed: GSS API Security Context Failure"</span>); |
| <a class="jxr_linenumber" name="L371" href="#L371">371</a> } |
| <a class="jxr_linenumber" name="L372" href="#L372">372</a> |
| <a class="jxr_linenumber" name="L373" href="#L373">373</a> <strong class="jxr_keyword">if</strong> (buf.remaining() >= 2) { |
| <a class="jxr_linenumber" name="L374" href="#L374">374</a> byte[] size = <strong class="jxr_keyword">new</strong> byte[2]; |
| <a class="jxr_linenumber" name="L375" href="#L375">375</a> buf.get(size); |
| <a class="jxr_linenumber" name="L376" href="#L376">376</a> <strong class="jxr_keyword">int</strong> s = ByteUtilities.makeIntFromByte2(size); |
| <a class="jxr_linenumber" name="L377" href="#L377">377</a> <strong class="jxr_keyword">if</strong> (buf.remaining() >= s) { |
| <a class="jxr_linenumber" name="L378" href="#L378">378</a> byte[] token = <strong class="jxr_keyword">new</strong> byte[s]; |
| <a class="jxr_linenumber" name="L379" href="#L379">379</a> buf.get(token); |
| <a class="jxr_linenumber" name="L380" href="#L380">380</a> getSession().setAttribute(GSS_TOKEN, token); |
| <a class="jxr_linenumber" name="L381" href="#L381">381</a> len = 0; |
| <a class="jxr_linenumber" name="L382" href="#L382">382</a> } <strong class="jxr_keyword">else</strong> { |
| <a class="jxr_linenumber" name="L383" href="#L383">383</a> <strong class="jxr_keyword">return</strong>; |
| <a class="jxr_linenumber" name="L384" href="#L384">384</a> } |
| <a class="jxr_linenumber" name="L385" href="#L385">385</a> } <strong class="jxr_keyword">else</strong> { |
| <a class="jxr_linenumber" name="L386" href="#L386">386</a> buf.position(oldPos); |
| <a class="jxr_linenumber" name="L387" href="#L387">387</a> <strong class="jxr_keyword">return</strong>; |
| <a class="jxr_linenumber" name="L388" href="#L388">388</a> } |
| <a class="jxr_linenumber" name="L389" href="#L389">389</a> } <strong class="jxr_keyword">else</strong> <strong class="jxr_keyword">if</strong> (buf.get(1) != SocksProxyConstants.V5_REPLY_SUCCEEDED) { |
| <a class="jxr_linenumber" name="L390" href="#L390">390</a> <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> IllegalStateException(<span class="jxr_string">"Authentication failed"</span>); |
| <a class="jxr_linenumber" name="L391" href="#L391">391</a> } |
| <a class="jxr_linenumber" name="L392" href="#L392">392</a> |
| <a class="jxr_linenumber" name="L393" href="#L393">393</a> } <strong class="jxr_keyword">else</strong> <strong class="jxr_keyword">if</strong> (step == SocksProxyConstants.SOCKS5_REQUEST_STEP) { |
| <a class="jxr_linenumber" name="L394" href="#L394">394</a> <em class="jxr_comment">// Send the request</em> |
| <a class="jxr_linenumber" name="L395" href="#L395">395</a> byte addressType = buf.get(3); |
| <a class="jxr_linenumber" name="L396" href="#L396">396</a> len = 6; |
| <a class="jxr_linenumber" name="L397" href="#L397">397</a> <strong class="jxr_keyword">if</strong> (addressType == SocksProxyConstants.IPV6_ADDRESS_TYPE) { |
| <a class="jxr_linenumber" name="L398" href="#L398">398</a> len += 16; |
| <a class="jxr_linenumber" name="L399" href="#L399">399</a> } <strong class="jxr_keyword">else</strong> <strong class="jxr_keyword">if</strong> (addressType == SocksProxyConstants.IPV4_ADDRESS_TYPE) { |
| <a class="jxr_linenumber" name="L400" href="#L400">400</a> len += 4; |
| <a class="jxr_linenumber" name="L401" href="#L401">401</a> } <strong class="jxr_keyword">else</strong> <strong class="jxr_keyword">if</strong> (addressType == SocksProxyConstants.DOMAIN_NAME_ADDRESS_TYPE) { |
| <a class="jxr_linenumber" name="L402" href="#L402">402</a> len += 1 + (buf.get(4)); |
| <a class="jxr_linenumber" name="L403" href="#L403">403</a> } <strong class="jxr_keyword">else</strong> { |
| <a class="jxr_linenumber" name="L404" href="#L404">404</a> <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> IllegalStateException(<span class="jxr_string">"Unknwon address type"</span>); |
| <a class="jxr_linenumber" name="L405" href="#L405">405</a> } |
| <a class="jxr_linenumber" name="L406" href="#L406">406</a> |
| <a class="jxr_linenumber" name="L407" href="#L407">407</a> <strong class="jxr_keyword">if</strong> (buf.remaining() >= len) { |
| <a class="jxr_linenumber" name="L408" href="#L408">408</a> <em class="jxr_comment">// handle response</em> |
| <a class="jxr_linenumber" name="L409" href="#L409">409</a> byte status = buf.get(1); |
| <a class="jxr_linenumber" name="L410" href="#L410">410</a> <strong class="jxr_keyword">if</strong> (LOGGER.isDebugEnabled()) { |
| <a class="jxr_linenumber" name="L411" href="#L411">411</a> LOGGER.debug(<span class="jxr_string">" response status: {}"</span>, SocksProxyConstants.getReplyCodeAsString(status)); |
| <a class="jxr_linenumber" name="L412" href="#L412">412</a> } |
| <a class="jxr_linenumber" name="L413" href="#L413">413</a> |
| <a class="jxr_linenumber" name="L414" href="#L414">414</a> <strong class="jxr_keyword">if</strong> (status == SocksProxyConstants.V5_REPLY_SUCCEEDED) { |
| <a class="jxr_linenumber" name="L415" href="#L415">415</a> buf.position(buf.position() + len); |
| <a class="jxr_linenumber" name="L416" href="#L416">416</a> setHandshakeComplete(); |
| <a class="jxr_linenumber" name="L417" href="#L417">417</a> <strong class="jxr_keyword">return</strong>; |
| <a class="jxr_linenumber" name="L418" href="#L418">418</a> } |
| <a class="jxr_linenumber" name="L419" href="#L419">419</a> |
| <a class="jxr_linenumber" name="L420" href="#L420">420</a> <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> Exception(<span class="jxr_string">"Proxy handshake failed - Code: 0x"</span> + ByteUtilities.asHex(<strong class="jxr_keyword">new</strong> byte[] { status })); |
| <a class="jxr_linenumber" name="L421" href="#L421">421</a> } |
| <a class="jxr_linenumber" name="L422" href="#L422">422</a> |
| <a class="jxr_linenumber" name="L423" href="#L423">423</a> <strong class="jxr_keyword">return</strong>; |
| <a class="jxr_linenumber" name="L424" href="#L424">424</a> } |
| <a class="jxr_linenumber" name="L425" href="#L425">425</a> |
| <a class="jxr_linenumber" name="L426" href="#L426">426</a> <strong class="jxr_keyword">if</strong> (len > 0) { |
| <a class="jxr_linenumber" name="L427" href="#L427">427</a> buf.position(buf.position() + len); |
| <a class="jxr_linenumber" name="L428" href="#L428">428</a> } |
| <a class="jxr_linenumber" name="L429" href="#L429">429</a> |
| <a class="jxr_linenumber" name="L430" href="#L430">430</a> <em class="jxr_comment">// Move to the handshaking next step if not in the middle of</em> |
| <a class="jxr_linenumber" name="L431" href="#L431">431</a> <em class="jxr_comment">// the authentication process</em> |
| <a class="jxr_linenumber" name="L432" href="#L432">432</a> <strong class="jxr_keyword">boolean</strong> isAuthenticating = false; |
| <a class="jxr_linenumber" name="L433" href="#L433">433</a> <strong class="jxr_keyword">if</strong> (step == SocksProxyConstants.SOCKS5_AUTH_STEP) { |
| <a class="jxr_linenumber" name="L434" href="#L434">434</a> byte method = ((Byte) getSession().getAttribute(Socks5LogicHandler.SELECTED_AUTH_METHOD)).byteValue(); |
| <a class="jxr_linenumber" name="L435" href="#L435">435</a> <strong class="jxr_keyword">if</strong> (method == SocksProxyConstants.GSSAPI_AUTH) { |
| <a class="jxr_linenumber" name="L436" href="#L436">436</a> GSSContext ctx = (GSSContext) getSession().getAttribute(GSS_CONTEXT); |
| <a class="jxr_linenumber" name="L437" href="#L437">437</a> <strong class="jxr_keyword">if</strong> (ctx == <strong class="jxr_keyword">null</strong> || !ctx.isEstablished()) { |
| <a class="jxr_linenumber" name="L438" href="#L438">438</a> isAuthenticating = <strong class="jxr_keyword">true</strong>; |
| <a class="jxr_linenumber" name="L439" href="#L439">439</a> } |
| <a class="jxr_linenumber" name="L440" href="#L440">440</a> } |
| <a class="jxr_linenumber" name="L441" href="#L441">441</a> } |
| <a class="jxr_linenumber" name="L442" href="#L442">442</a> |
| <a class="jxr_linenumber" name="L443" href="#L443">443</a> <strong class="jxr_keyword">if</strong> (!isAuthenticating) { |
| <a class="jxr_linenumber" name="L444" href="#L444">444</a> getSession().setAttribute(HANDSHAKE_STEP, ++step); |
| <a class="jxr_linenumber" name="L445" href="#L445">445</a> } |
| <a class="jxr_linenumber" name="L446" href="#L446">446</a> |
| <a class="jxr_linenumber" name="L447" href="#L447">447</a> doHandshake(nextFilter); |
| <a class="jxr_linenumber" name="L448" href="#L448">448</a> } |
| <a class="jxr_linenumber" name="L449" href="#L449">449</a> |
| <a class="jxr_linenumber" name="L450" href="#L450">450</a> <em class="jxr_javadoccomment">/**</em> |
| <a class="jxr_linenumber" name="L451" href="#L451">451</a> <em class="jxr_javadoccomment"> * Closes the session. If any {@link GSSContext} is present in the session </em> |
| <a class="jxr_linenumber" name="L452" href="#L452">452</a> <em class="jxr_javadoccomment"> * then it is closed.</em> |
| <a class="jxr_linenumber" name="L453" href="#L453">453</a> <em class="jxr_javadoccomment"> * </em> |
| <a class="jxr_linenumber" name="L454" href="#L454">454</a> <em class="jxr_javadoccomment"> * @param message the error message</em> |
| <a class="jxr_linenumber" name="L455" href="#L455">455</a> <em class="jxr_javadoccomment"> */</em> |
| <a class="jxr_linenumber" name="L456" href="#L456">456</a> @Override |
| <a class="jxr_linenumber" name="L457" href="#L457">457</a> <strong class="jxr_keyword">protected</strong> <strong class="jxr_keyword">void</strong> closeSession(String message) { |
| <a class="jxr_linenumber" name="L458" href="#L458">458</a> GSSContext ctx = (GSSContext) getSession().getAttribute(GSS_CONTEXT); |
| <a class="jxr_linenumber" name="L459" href="#L459">459</a> <strong class="jxr_keyword">if</strong> (ctx != <strong class="jxr_keyword">null</strong>) { |
| <a class="jxr_linenumber" name="L460" href="#L460">460</a> <strong class="jxr_keyword">try</strong> { |
| <a class="jxr_linenumber" name="L461" href="#L461">461</a> ctx.dispose(); |
| <a class="jxr_linenumber" name="L462" href="#L462">462</a> } <strong class="jxr_keyword">catch</strong> (GSSException e) { |
| <a class="jxr_linenumber" name="L463" href="#L463">463</a> e.printStackTrace(); |
| <a class="jxr_linenumber" name="L464" href="#L464">464</a> <strong class="jxr_keyword">super</strong>.closeSession(message, e); |
| <a class="jxr_linenumber" name="L465" href="#L465">465</a> <strong class="jxr_keyword">return</strong>; |
| <a class="jxr_linenumber" name="L466" href="#L466">466</a> } |
| <a class="jxr_linenumber" name="L467" href="#L467">467</a> } |
| <a class="jxr_linenumber" name="L468" href="#L468">468</a> <strong class="jxr_keyword">super</strong>.closeSession(message); |
| <a class="jxr_linenumber" name="L469" href="#L469">469</a> } |
| <a class="jxr_linenumber" name="L470" href="#L470">470</a> } |
| </pre> |
| <hr/> |
| <div id="footer">Copyright © 2004–2019 <a href="http://mina.apache.org/">Apache MINA Project</a>. All rights reserved.</div> |
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