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<head>
<title>Class: Net::SSH::Proxy::SOCKS5</title>
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<table width="100%" border='0' cellpadding='0' cellspacing='0' class='banner'><tr>
<td class="file-title"><span class="file-title-prefix">Class</span><br />Net::SSH::Proxy::SOCKS5</td>
<td align="right">
<table cellspacing=0 cellpadding=2>
<tr valign="top">
<td>In:</td>
<td>
<a href="../../../../files/lib/net/ssh/proxy/socks5_rb.html">lib/net/ssh/proxy/socks5.rb</a>
</td>
</tr>
<tr>
<td>Parent:</td>
<td>
Object
</td>
</tr>
</table>
</td>
</tr>
</table>
<!-- banner header -->
<div id="bodyContent">
<div id="content">
<div class="description"><p>
An implementation of a socket factory that returns a socket which will
tunnel the connection through a <a href="SOCKS5.html">SOCKS5</a> proxy. It
allows explicit specification of the user and password, but if none are
given it will look in the SOCKS_USER/SOCKS_PASSWORD and
CONNECT_USER/CONNECT_PASSWORD environment variables as well.
</p>
</div>
<div class="sectiontitle">Methods</div>
<ul>
<li><a href="#M000092">new</a></li>
<li><a href="#M000093">open</a></li>
</ul>
<div class="sectiontitle">Constants</div>
<table border='0' cellpadding='5'>
<tr valign='top'>
<td class="attr-name">SOCKS_VERSION</td>
<td>=</td>
<td class="attr-value">5</td>
</tr>
<tr valign='top'>
<td class="attr-name">SOCKS_METHOD_NO_AUTH</td>
<td>=</td>
<td class="attr-value">0</td>
</tr>
<tr valign='top'>
<td class="attr-name">SOCKS_METHOD_GSSAPI</td>
<td>=</td>
<td class="attr-value">1</td>
</tr>
<tr valign='top'>
<td class="attr-name">SOCKS_METHOD_PASSWD</td>
<td>=</td>
<td class="attr-value">2</td>
</tr>
<tr valign='top'>
<td class="attr-name">SOCKS_METHOD_NONE</td>
<td>=</td>
<td class="attr-value">0xFF</td>
</tr>
<tr valign='top'>
<td class="attr-name">SOCKS_CMD_CONNECT</td>
<td>=</td>
<td class="attr-value">1</td>
</tr>
<tr valign='top'>
<td class="attr-name">SOCKS_ATYP_IPV4</td>
<td>=</td>
<td class="attr-value">1</td>
</tr>
<tr valign='top'>
<td class="attr-name">SOCKS_ATYP_DOMAIN</td>
<td>=</td>
<td class="attr-value">3</td>
</tr>
<tr valign='top'>
<td class="attr-name">SOCKS_ATYP_IPV6</td>
<td>=</td>
<td class="attr-value">4</td>
</tr>
<tr valign='top'>
<td class="attr-name">SOCKS_SUCCESS</td>
<td>=</td>
<td class="attr-value">0</td>
</tr>
<tr valign='top'>
<td class="attr-name">SOCKS_FAILURE</td>
<td>=</td>
<td class="attr-value">1</td>
</tr>
<tr valign='top'>
<td class="attr-name">SOCKS_NOT_ALLOWED</td>
<td>=</td>
<td class="attr-value">2</td>
</tr>
<tr valign='top'>
<td class="attr-name">SOCKS_NETWORK_UNREACHABLE</td>
<td>=</td>
<td class="attr-value">3</td>
</tr>
<tr valign='top'>
<td class="attr-name">SOCKS_HOST_UNREACHABLE</td>
<td>=</td>
<td class="attr-value">4</td>
</tr>
<tr valign='top'>
<td class="attr-name">SOCKS_REFUSED</td>
<td>=</td>
<td class="attr-value">5</td>
</tr>
<tr valign='top'>
<td class="attr-name">SOCKS_TTL_EXPIRED</td>
<td>=</td>
<td class="attr-value">6</td>
</tr>
<tr valign='top'>
<td class="attr-name">SOCKS_CMD_NOT_SUPPORTED</td>
<td>=</td>
<td class="attr-value">7</td>
</tr>
<tr valign='top'>
<td class="attr-name">SOCKS_ADDR_NOT_SUPPORTED</td>
<td>=</td>
<td class="attr-value">8</td>
</tr>
</table>
<div class="sectiontitle">Public Class methods</div>
<div class="method">
<div class="title">
<a name="M000092"></a><b>new</b>( proxy_host, proxy_port=1080, options={} )
</div>
<div class="description">
<p>
Create a <a href="SOCKS5.html#M000092">new</a> proxy connection to the
given proxy host and port. Optionally, @:user@ and @:password@ options may
be given to identify the username and password with which to authenticate.
</p>
</div>
<div class="sourcecode">
<p class="source-link">[ <a href="javascript:toggleSource('M000092_source')" id="l_M000092_source">show source</a> ]</p>
<div id="M000092_source" class="dyn-source">
<pre>
<span class="ruby-comment cmt"># File lib/net/ssh/proxy/socks5.rb, line 58</span>
58: <span class="ruby-keyword kw">def</span> <span class="ruby-identifier">initialize</span>( <span class="ruby-identifier">proxy_host</span>, <span class="ruby-identifier">proxy_port</span>=<span class="ruby-value">1080</span>, <span class="ruby-identifier">options</span>={} )
59: <span class="ruby-ivar">@proxy_host</span> = <span class="ruby-identifier">proxy_host</span>
60: <span class="ruby-ivar">@proxy_port</span> = <span class="ruby-identifier">proxy_port</span>
61: <span class="ruby-ivar">@options</span> = <span class="ruby-identifier">options</span>
62: <span class="ruby-keyword kw">end</span>
</pre>
</div>
</div>
</div>
<div class="sectiontitle">Public Instance methods</div>
<div class="method">
<div class="title">
<a name="M000093"></a><b>open</b>( host, port )
</div>
<div class="description">
<p>
Return a <a href="SOCKS5.html#M000092">new</a> socket connected to the
given host and port via the proxy that was requested when the socket
factory was instantiated.
</p>
</div>
<div class="sourcecode">
<p class="source-link">[ <a href="javascript:toggleSource('M000093_source')" id="l_M000093_source">show source</a> ]</p>
<div id="M000093_source" class="dyn-source">
<pre>
<span class="ruby-comment cmt"># File lib/net/ssh/proxy/socks5.rb, line 66</span>
66: <span class="ruby-keyword kw">def</span> <span class="ruby-identifier">open</span>( <span class="ruby-identifier">host</span>, <span class="ruby-identifier">port</span> )
67: <span class="ruby-identifier">sock</span> = <span class="ruby-constant">TCPSocket</span>.<span class="ruby-identifier">new</span>( <span class="ruby-ivar">@proxy_host</span>, <span class="ruby-ivar">@proxy_port</span> )
68:
69: <span class="ruby-identifier">methods</span> = [ <span class="ruby-constant">SOCKS_METHOD_NO_AUTH</span> ]
70: <span class="ruby-identifier">methods</span> <span class="ruby-operator"><<</span> <span class="ruby-constant">SOCKS_METHOD_PASSWD</span> <span class="ruby-keyword kw">if</span> <span class="ruby-identifier">proxy_user</span>
71:
72: <span class="ruby-identifier">packet</span> = [ <span class="ruby-constant">SOCKS_VERSION</span>, <span class="ruby-identifier">methods</span>.<span class="ruby-identifier">size</span>, <span class="ruby-operator">*</span><span class="ruby-identifier">methods</span> ].<span class="ruby-identifier">pack</span>( <span class="ruby-value str">"C*"</span> )
73: <span class="ruby-identifier">sock</span>.<span class="ruby-identifier">send</span> <span class="ruby-identifier">packet</span>, <span class="ruby-value">0</span>
74:
75: <span class="ruby-identifier">version</span>, <span class="ruby-identifier">method</span> = <span class="ruby-identifier">sock</span>.<span class="ruby-identifier">recv</span>( <span class="ruby-value">2</span> ).<span class="ruby-identifier">unpack</span>( <span class="ruby-value str">"CC"</span> )
76: <span class="ruby-keyword kw">if</span> <span class="ruby-identifier">version</span> <span class="ruby-operator">!=</span> <span class="ruby-value">5</span>
77: <span class="ruby-identifier">sock</span>.<span class="ruby-identifier">close</span>
78: <span class="ruby-identifier">raise</span> <span class="ruby-constant">Net</span><span class="ruby-operator">::</span><span class="ruby-constant">SSH</span><span class="ruby-operator">::</span><span class="ruby-constant">Proxy</span><span class="ruby-operator">::</span><span class="ruby-constant">Error</span>,
79: <span class="ruby-node">"invalid SOCKS version (#{version})"</span>
80: <span class="ruby-keyword kw">end</span>
81:
82: <span class="ruby-keyword kw">if</span> <span class="ruby-identifier">method</span> <span class="ruby-operator">==</span> <span class="ruby-constant">SOCKS_METHOD_NONE</span>
83: <span class="ruby-identifier">sock</span>.<span class="ruby-identifier">close</span>
84: <span class="ruby-identifier">raise</span> <span class="ruby-constant">Net</span><span class="ruby-operator">::</span><span class="ruby-constant">SSH</span><span class="ruby-operator">::</span><span class="ruby-constant">Proxy</span><span class="ruby-operator">::</span><span class="ruby-constant">Error</span>,
85: <span class="ruby-value str">"no supported authorization methods"</span>
86: <span class="ruby-keyword kw">end</span>
87:
88: <span class="ruby-keyword kw">case</span> <span class="ruby-identifier">method</span>
89: <span class="ruby-keyword kw">when</span> <span class="ruby-constant">SOCKS_METHOD_NO_AUTH</span>
90: <span class="ruby-comment cmt"># no method-dependent subnegotiation required</span>
91:
92: <span class="ruby-keyword kw">when</span> <span class="ruby-constant">SOCKS_METHOD_PASSWD</span>
93: <span class="ruby-identifier">negotiate_password</span>( <span class="ruby-identifier">sock</span> )
94: <span class="ruby-keyword kw">end</span>
95:
96: <span class="ruby-identifier">packet</span> = [ <span class="ruby-constant">SOCKS_VERSION</span>, <span class="ruby-constant">SOCKS_CMD_CONNECT</span>, <span class="ruby-value">0</span> ].<span class="ruby-identifier">pack</span>( <span class="ruby-value str">"C*"</span> )
97:
98: <span class="ruby-keyword kw">if</span> <span class="ruby-identifier">host</span> <span class="ruby-operator">=~</span> <span class="ruby-regexp re">/^(\d+)\.(\d+)\.(\d+)\.(\d+)$/</span>
99: <span class="ruby-identifier">packet</span> <span class="ruby-operator"><<</span> [ <span class="ruby-constant">SOCKS_ATYP_IPV4</span>, <span class="ruby-identifier">$1</span>.<span class="ruby-identifier">to_i</span>, <span class="ruby-identifier">$2</span>.<span class="ruby-identifier">to_i</span>,
100: <span class="ruby-identifier">$3</span>.<span class="ruby-identifier">to_i</span>, <span class="ruby-identifier">$4</span>.<span class="ruby-identifier">to_i</span> ].<span class="ruby-identifier">pack</span>( <span class="ruby-value str">"C*"</span> )
101: <span class="ruby-keyword kw">else</span>
102: <span class="ruby-identifier">packet</span> <span class="ruby-operator"><<</span> [ <span class="ruby-constant">SOCKS_ATYP_DOMAIN</span>, <span class="ruby-identifier">host</span>.<span class="ruby-identifier">length</span>, <span class="ruby-identifier">host</span> ].<span class="ruby-identifier">pack</span>( <span class="ruby-value str">"CCA*"</span> )
103: <span class="ruby-keyword kw">end</span>
104:
105: <span class="ruby-identifier">packet</span> <span class="ruby-operator"><<</span> [ <span class="ruby-identifier">port</span> ].<span class="ruby-identifier">pack</span>( <span class="ruby-value str">"n"</span> )
106: <span class="ruby-identifier">sock</span>.<span class="ruby-identifier">send</span> <span class="ruby-identifier">packet</span>, <span class="ruby-value">0</span>
107:
108: <span class="ruby-identifier">version</span>, <span class="ruby-identifier">reply</span>, = <span class="ruby-identifier">sock</span>.<span class="ruby-identifier">recv</span>( <span class="ruby-value">4</span> ).<span class="ruby-identifier">unpack</span>( <span class="ruby-value str">"C*"</span> )
109: <span class="ruby-identifier">len</span> = <span class="ruby-identifier">sock</span>.<span class="ruby-identifier">recv</span>( <span class="ruby-value">1</span> )[<span class="ruby-value">0</span>]
110: <span class="ruby-identifier">sock</span>.<span class="ruby-identifier">recv</span>( <span class="ruby-identifier">len</span> <span class="ruby-operator">+</span> <span class="ruby-value">2</span> )
111:
112: <span class="ruby-keyword kw">unless</span> <span class="ruby-identifier">reply</span> <span class="ruby-operator">==</span> <span class="ruby-constant">SOCKS_SUCCESS</span>
113: <span class="ruby-identifier">sock</span>.<span class="ruby-identifier">close</span>
114: <span class="ruby-identifier">raise</span> <span class="ruby-constant">ConnectError</span>, <span class="ruby-node">"#{reply}"</span>
115: <span class="ruby-keyword kw">end</span>
116:
117: <span class="ruby-keyword kw">return</span> <span class="ruby-identifier">sock</span>
118: <span class="ruby-keyword kw">end</span>
</pre>
</div>
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