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-<html>
- <head>
- <meta name="viewport" content="width=device-width, initial-scale=1.0" />
- <meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
- <meta http-equiv="Content-Language" content="en" />
- <title>s6-networking: the minidentd program</title>
- <meta name="Description" content="s6-networking: the minidentd program" />
- <meta name="Keywords" content="s6-networking minidentd identd ident server rfc 1413" />
- <!-- <link rel="stylesheet" type="text/css" href="//skarnet.org/default.css" /> -->
- </head>
-<body>
-
-<p>
-<a href="index.html">s6-networking</a><br />
-<a href="//skarnet.org/software/">Software</a><br />
-<a href="//skarnet.org/">skarnet.org</a>
-</p>
-
-<h1> The <tt>minidentd</tt> program </h1>
-
-<p>
-<tt>minidentd</tt> is a small
-<a href="https://cr.yp.to/proto/ucspi.txt">UCSPI</a> server application
-that answers IDENT requests.
-</p>
-
-<h2> Interface </h2>
-
-<pre>
- minidentd [ -v ] [ -n | -i | -r ] [ -y <em>file</em> ] [ -t <em>timeout</em> ]
-</pre>
-
-<p>
-<tt>minidentd</tt> reads a series of IDENT requests on stdin and answers
-them on stdout. It logs what it's doing on stderr. The environment
-variables <em>x</em>LOCALIP and <em>x</em>REMOTEIP, where <em>x</em> is
-the value of the PROTO environment variable, must contain the IDENT
-server address and the IDENT client address, respectively.
-</p>
-
-<p>
- minidentd exits 0 on success, 100 on a usage error and 111 on a system
-call failure.
-</p>
-
-<p>
- minidentd does not contact the network directly. It's meant to
-run under a super-server like
-<a href="s6-tcpserver.html">s6-tcpserver</a>. minidentd will
-work with IPv4 as well as IPv6.
-</p>
-
-<h2> Options </h2>
-
-<ul>
- <li> <tt>-v</tt>&nbsp;: verbose mode. Log queries and replies. </li>
- <li> <tt>-n</tt>&nbsp;: send ERROR&nbsp;:&nbsp;HIDDEN-USER replies if
-the user has a <tt>.ident</tt> file in their home directory. </li>
- <li> <tt>-i</tt>&nbsp;: user-defined answers. The first 14 chars of the
-user's <tt>.ident</tt> file, up to EOF or newline, are used instead of
-the user name. If the file exists and is empty, send
-ERROR&nbsp;:&nbsp;HIDDEN-USER. If it doesn't exist, send a normal reply. </li>
- <li> <tt>-r</tt>&nbsp;: send random replies. </li>
- <li> <tt>-y&nbsp;<em>file</em></tt>&nbsp;: valid with <tt>-n</tt> or <tt>-i</tt>.
-Use <em>file</em> instead of <tt>.ident</tt>. </li>
- <li> <tt>-t&nbsp;<em>timeout</em></tt>&nbsp;: close connection after
-<em>timeout</em> milliseconds without a client request. </li>
-</ul>
-
-<h2> Notes </h2>
-
-<ul>
- <li> minidentd works only under Linux (2.2 or later);
-on other systems, it will compile and run, but report an error for every
-request.
-The problem is that <em>there is no portable Unix way</em> of listing active
-outgoing TCP connections with the relevant uids. On Linux, minidentd parses
-the <tt>/proc/net/tcp</tt> or <tt>/proc/net/tcp6</tt> virtual file. Other
-systems have their own way of doing this, if you want your system to be
-supported by minidentd, please contact the author. </li>
-</ul>
-
-</body>
-</html>