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<h2><b>ProFTPD module <code>mod_unique_id</code></b></h2>
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<hr><br>
<p>
The <code>mod_unique_id</code> module attempts to generate a unique ID for
every FTP session. To make the ID unique across multiple servers, the
following bits of information are used:
<ul>
<li>host IP address
<li>client IP address
<li>process ID
<li>time of day (including microseconds)
</ul>
The generated ID is stored in the <code>UNIQUE_ID</code> environment variable
in a printable form; other modules can retrieve the unique session ID from the
environment. (Note that you will want <code>mod_unique_id</code> listed toward
the <i>end</i> of your <code>--with-modules</code> configure list, so that the
ID generation runs early in the session establishment process.) The contents
of the <code>UNIQUE_ID</code> should be considered opaque, and are subject
to change in the future.
<p>
This module is contained in the <code>mod_unique_id</code> file for
ProFTPD 1.3.<i>x</i>, and is not compiled by default. Installation
instructions are discussed <a href="#Installation">here</a>.
<p>
The most current version of <code>mod_unique_id</code> is distributed with
the <code>proftpd<code> source code.
<h2>Author</h2>
<p>
Please contact TJ Saunders <tj <i>at</i> castaglia.org> with any
questions, concerns, or suggestions regarding this module.
<h2>Directives</h2>
<ul>
<li><a href="#UniqueIDEngine">UniqueIDEngine</a>
</ul>
<hr>
<h2><a name="UniqueIDEngine">UniqueIDEngine</a></h2>
<strong>Syntax:</strong> UniqueIDEngine <em>on|off</em><br>
<strong>Default:</strong> <em>on</em><br>
<strong>Context:</strong> "server config"<br>
<strong>Module:</strong> mod_unique_id<br>
<strong>Compatibility:</strong> 1.3.1rc1 and later
<p>
The <code>UniqueIDEngine</code> directive enables or disables the module's
generation of a unique ID for each FTP session.
<p>
By default, <code>UniqueIDEngine</code> is <em>on</em>.
<p>
<hr>
<h2><a name="Installation">Installation</a></h2>
To install <code>mod_unique_id</code>, copy the <code>mod_unique_id.c</code>
file into:
<pre>
<i>proftpd-dir</i>/contrib/
</pre>
after unpacking the latest proftpd-1.3.<i>x</i> source code. For including
<code>mod_unique_id</code> as a staticly linked module:
<pre>
./configure --with-modules=mod_unique_id
</pre>
Alternatively, <code>mod_unique_id</code> could be built as a DSO module:
<pre>
./configure --with-shared=mod_unique_id
</pre>
Then follow the usual steps:
<pre>
make
make install
</pre>
<p>
<hr>
<h2><a name="Usage">Usage</a></h2>
<p>
Since <code>mod_unique_id</code> generates a new unique ID for each session
by default, there is no special configuration needed for enabling the
module. Taking advantage of <code>mod_unique_id</code>, however, requires
some adjustments in other parts of your <code>proftpd.conf</code>.
<p>
Example configuration:
<pre>
<IfModule mod_unique_id.c>
# Include the unique session ID in an ExtendedLog
LogFormat session "%{UNIQUE_ID}e %h %l %u %t \"%r\" %s %b"
ExtendedLog /path/to/extended.log ALL session
# Store the unique ID in a SQL table named 'ftpsessions'
SQLLog PASS login
SQLNamedQuery login INSERT "'%{env:UNIQUE_ID}', '%u', now()" ftpsessions
</IfModule>
</pre>
<p>
<hr><br>
Author: <i>$Author: castaglia $</i><br>
Last Updated: <i>$Date: 2007/10/11 17:06:35 $</i><br>
<br><hr>
<font size=2><b><i>
© Copyright 2006-2007 TJ Saunders<br>
All Rights Reserved<br>
</i></b></font>
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