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<th colspan="3" align="center">LPRng-HOWTO: 1 Apr 2002
(For LPRng-3.8.10)</th>
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<div class="APPENDIX">
<h1><a name="TESTING">Appendix C. Testing and Diagnostic
Facilities</a></h1>
<div class="TOC">
<dl>
<dt><b>Table of Contents</b></dt>
<dt>C.1. <a href="testing.htm#AEN11432">Compiling the
Test Version</a></dt>
<dt>C.2. <a href="x11439.htm">Setting Up The Test Version
Spool Queues</a></dt>
<dt>C.3. <a href="x11467.htm">Running the Test Version
Software</a></dt>
</dl>
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<p>The <b class="APPLICATION">LPRng</b> code has the ability
to run as non-setuid software, and to use the non-default
TCP/IP ports for communication. This facility allows a <i
class="EMPHASIS">Test Version</i> to be run in parallel with
the normal <b class="APPLICATION">LPRng</b> software.</p>
<p>To simplify testing and portability issues, a simple test
version of the spool queues and jobs has been supplied with
the <b class="APPLICATION">LPRng</b> distribution. These
queues can be placed in a suitable location (<tt class=
"FILENAME">/tmp</tt> is common) and the <b class=
"APPLICATION">LPRng</b> software tested.</p>
<p>The test version of the software will use the <tt class=
"LITERAL">LPD_CONF</tt> environment variable to specify the
location of the configuration file. It will read this
configuration file on startup and use the values to override
the normal defaults. Since a user could maliciously set up
their own configuration files with values that could
compromise system security, it is strongly recommended that
the test version is not made SETUID root. In fact, the <b
class="APPLICATION">LPRng</b> code will chatter messages when
the LPD_CONF ability is enabled and it is run as root.</p>
<div class="SECT1">
<h1 class="SECT1"><a name="AEN11432">C.1. Compiling the
Test Version</a></h1>
<p>Edit <tt class="FILENAME">src/Makefile</tt>, and
uncomment the indicated line. Then run <tt class=
"LITERAL">make</tt> to regenerate the distribution.</p>
<div class="INFORMALEXAMPLE">
<a name="AEN11437"></a>
<pre class="SCREEN">
#### ****** TESTING AND SECURITY LOOPHOLE ******************************
# Define GETENV to allow the LPD_CONFIG environment
# variable to be used as the name of a configuration file. In non-testing
# systems, this is a security loophole.
#CF := $(CF) -DGETENV
</pre>
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