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231 lines
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<?xml version="1.0" encoding="ISO-8859-1"?>
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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
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<html xmlns="http://www.w3.org/1999/xhtml" lang="en" xml:lang="en"><head>
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<meta content="text/html; charset=ISO-8859-1" http-equiv="Content-Type" />
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<!--
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This file is generated from xml source: DO NOT EDIT
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XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
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-->
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<title>mod_info - Apache HTTP Server Version 2.5</title>
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<link href="../style/css/manual.css" rel="stylesheet" media="all" type="text/css" title="Main stylesheet" />
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<link href="../style/css/manual-loose-100pc.css" rel="alternate stylesheet" media="all" type="text/css" title="No Sidebar - Default font size" />
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<link href="../style/css/manual-print.css" rel="stylesheet" media="print" type="text/css" /><link rel="stylesheet" type="text/css" href="../style/css/prettify.css" />
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<script src="../style/scripts/prettify.min.js" type="text/javascript">
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</script>
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<link href="../images/favicon.ico" rel="shortcut icon" /></head>
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<body>
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<div id="page-header">
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<p class="menu"><a href="../mod/">Modules</a> | <a href="../mod/quickreference.html">Directives</a> | <a href="http://wiki.apache.org/httpd/FAQ">FAQ</a> | <a href="../glossary.html">Glossary</a> | <a href="../sitemap.html">Sitemap</a></p>
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<p class="apache">Apache HTTP Server Version 2.5</p>
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<img alt="" src="../images/feather.png" /></div>
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<div class="up"><a href="./"><img title="<-" alt="<-" src="../images/left.gif" /></a></div>
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<div id="path">
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<a href="http://www.apache.org/">Apache</a> > <a href="http://httpd.apache.org/">HTTP Server</a> > <a href="http://httpd.apache.org/docs/">Documentation</a> > <a href="../">Version 2.5</a> > <a href="./">Modules</a></div>
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<div id="page-content">
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<div id="preamble"><h1>Apache Module mod_info</h1>
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<div class="toplang">
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<p><span>Available Languages: </span><a href="../en/mod/mod_info.html" title="English"> en </a> |
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<a href="../fr/mod/mod_info.html" hreflang="fr" rel="alternate" title="Fran<61>ais"> fr </a> |
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<a href="../ja/mod/mod_info.html" hreflang="ja" rel="alternate" title="Japanese"> ja </a> |
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<a href="../ko/mod/mod_info.html" hreflang="ko" rel="alternate" title="Korean"> ko </a></p>
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</div>
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<table class="module"><tr><th><a href="module-dict.html#Description">Description:</a></th><td>Provides a comprehensive overview of the server
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configuration</td></tr>
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<tr><th><a href="module-dict.html#Status">Status:</a></th><td>Extension</td></tr>
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<tr><th><a href="module-dict.html#ModuleIdentifier">Module<EFBFBD>Identifier:</a></th><td>info_module</td></tr>
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<tr><th><a href="module-dict.html#SourceFile">Source<EFBFBD>File:</a></th><td>mod_info.c</td></tr></table>
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<h3>Summary</h3>
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<p>To configure <code class="module"><a href="../mod/mod_info.html">mod_info</a></code>, add the following to your
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<code>httpd.conf</code> file.</p>
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<pre class="prettyprint lang-config"><Location "/server-info">
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SetHandler server-info
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</Location></pre>
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<p>You may wish to use <code class="module"><a href="../mod/mod_authz_host.html">mod_authz_host</a></code> inside the
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<code class="directive"><a href="../mod/core.html#location"><Location></a></code>
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directive to limit access to your server configuration
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information:</p>
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<pre class="prettyprint lang-config"><Location "/server-info">
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SetHandler server-info
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Require host example.com
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</Location></pre>
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<p>Once configured, the server information is obtained by
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accessing <code>http://your.host.example.com/server-info</code></p>
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</div>
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<div id="quickview"><h3>Topics</h3>
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<ul id="topics">
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<li><img alt="" src="../images/down.gif" /> <a href="#security">Security Issues</a></li>
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<li><img alt="" src="../images/down.gif" /> <a href="#queries">Selecting the information shown</a></li>
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<li><img alt="" src="../images/down.gif" /> <a href="#startup">Dumping the configuration on startup</a></li>
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<li><img alt="" src="../images/down.gif" /> <a href="#limitations">Known Limitations</a></li>
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</ul><h3 class="directives">Directives</h3>
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<ul id="toc">
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<li><img alt="" src="../images/down.gif" /> <a href="#addmoduleinfo">AddModuleInfo</a></li>
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</ul>
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<h3>Bugfix checklist</h3><ul class="seealso"><li><a href="https://www.apache.org/dist/httpd/CHANGES_2.4">httpd changelog</a></li><li><a href="https://bz.apache.org/bugzilla/buglist.cgi?bug_status=__open__&list_id=144532&product=Apache%20httpd-2&query_format=specific&order=changeddate%20DESC%2Cpriority%2Cbug_severity&component=mod_info">Known issues</a></li><li><a href="https://bz.apache.org/bugzilla/enter_bug.cgi?product=Apache%20httpd-2&component=mod_info">Report a bug</a></li></ul><h3>See also</h3>
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<ul class="seealso">
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<li><a href="#comments_section">Comments</a></li></ul></div>
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<div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div>
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<div class="section">
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<h2><a name="security" id="security">Security Issues</a></h2>
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<p>Once <code class="module"><a href="../mod/mod_info.html">mod_info</a></code> is loaded into the server, its
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handler capability is available in <em>all</em> configuration
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files, including per-directory files (<em>e.g.</em>,
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<code>.htaccess</code>). This may have security-related
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ramifications for your site.</p>
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<p>In particular, this module can leak sensitive information
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from the configuration directives of other Apache modules such as
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system paths, usernames/passwords, database names, etc. Therefore,
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this module should <strong>only</strong> be
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used in a controlled environment and always with caution.</p>
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<p>You will probably want to use <code class="module"><a href="../mod/mod_authz_host.html">mod_authz_host</a></code>
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to limit access to your server configuration information.</p>
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<div class="example"><h3>Access control</h3><pre class="prettyprint lang-config"><Location "/server-info">
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SetHandler server-info
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# Allow access from server itself
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Require ip 127.0.0.1
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# Additionally, allow access from local workstation
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Require ip 192.168.1.17
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</Location></pre>
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</div>
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</div><div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div>
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<div class="section">
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<h2><a name="queries" id="queries">Selecting the information shown</a></h2>
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<p>By default, the server information includes a list of
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all enabled modules, and for each module, a description of
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the directives understood by that module, the hooks implemented
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by that module, and the relevant directives from the current
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configuration.</p>
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<p>Other views of the configuration information are available by
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appending a query to the <code>server-info</code> request. For
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example, <code>http://your.host.example.com/server-info?config</code>
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will show all configuration directives.</p>
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<dl>
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<dt><code>?<module-name></code></dt>
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<dd>Only information relevant to the named module</dd>
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<dt><code>?config</code></dt>
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<dd>Just the configuration directives, not sorted by module</dd>
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<dt><code>?hooks</code></dt>
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<dd>Only the list of Hooks each module is attached to</dd>
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<dt><code>?list</code></dt>
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<dd>Only a simple list of enabled modules</dd>
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<dt><code>?server</code></dt>
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<dd>Only the basic server information</dd>
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<dt><code>?providers</code></dt>
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<dd>List the providers that are available on your server</dd>
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</dl>
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</div><div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div>
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<div class="section">
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<h2><a name="startup" id="startup">Dumping the configuration on startup</a></h2>
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<p>If the config define <code>-DDUMP_CONFIG</code> is set,
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<code class="module"><a href="../mod/mod_info.html">mod_info</a></code> will dump the pre-parsed configuration to
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<code>stdout</code> during server startup.</p>
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<pre class="prettyprint lang-sh">httpd -DDUMP_CONFIG -k start</pre>
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<p>Pre-parsed means that directives like
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<code class="directive"><a href="../mod/core.html#ifdefine"><IfDefine></a></code> and
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<code class="directive"><a href="../mod/core.html#ifmodule"><IfModule></a></code> are
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evaluated and environment variables are replaced. However it does
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not represent the final state of the configuration. In particular,
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it does not represent the merging or overriding that may happen
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for repeated directives.</p>
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<p>This is roughly equivalent to the <code>?config</code> query.</p>
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</div><div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div>
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<div class="section">
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<h2><a name="limitations" id="limitations">Known Limitations</a></h2>
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<p><code class="module"><a href="../mod/mod_info.html">mod_info</a></code> provides its information by reading the
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parsed configuration, rather than reading the original configuration
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file. There are a few limitations as a result of the way the parsed
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configuration tree is created:</p>
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<ul>
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<li>Directives which are executed immediately rather than being
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stored in the parsed configuration are not listed. These include
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<code class="directive"><a href="../mod/core.html#serverroot">ServerRoot</a></code>,
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<code class="directive"><a href="../mod/mod_so.html#loadmodule">LoadModule</a></code>, and
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<code class="directive"><a href="../mod/mod_so.html#loadfile">LoadFile</a></code>.</li>
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<li>Directives which control the configuration file itself, such as
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<code class="directive"><a href="../mod/core.html#include">Include</a></code>,
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<code class="directive"><a href="../mod/core.html#ifmodule"><IfModule></a></code> and
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<code class="directive"><a href="../mod/core.html#ifdefine"><IfDefine></a></code> are not
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listed, but the included configuration directives are.</li>
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<li>Comments are not listed. (This may be considered a feature.)</li>
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<li>Configuration directives from <code>.htaccess</code> files are
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not listed (since they do not form part of the permanent server
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configuration).</li>
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<li>Container directives such as
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<code class="directive"><a href="../mod/core.html#directory"><Directory></a></code>
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are listed normally, but <code class="module"><a href="../mod/mod_info.html">mod_info</a></code> cannot figure
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out the line number for the closing
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<code class="directive"><a href="../mod/core.html#directory"></Directory></a></code>.</li>
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<li>Directives generated by third party modules such as <a href="http://perl.apache.org">mod_perl</a>
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might not be listed.</li>
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</ul>
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</div>
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<div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div>
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<div class="directive-section"><h2><a name="AddModuleInfo" id="AddModuleInfo">AddModuleInfo</a> <a name="addmoduleinfo" id="addmoduleinfo">Directive</a></h2>
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<table class="directive">
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<tr><th><a href="directive-dict.html#Description">Description:</a></th><td>Adds additional information to the module
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information displayed by the server-info handler</td></tr>
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<tr><th><a href="directive-dict.html#Syntax">Syntax:</a></th><td><code>AddModuleInfo <var>module-name</var> <var>string</var></code></td></tr>
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<tr><th><a href="directive-dict.html#Context">Context:</a></th><td>server config, virtual host</td></tr>
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<tr><th><a href="directive-dict.html#Status">Status:</a></th><td>Extension</td></tr>
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<tr><th><a href="directive-dict.html#Module">Module:</a></th><td>mod_info</td></tr>
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</table>
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<p>This allows the content of <var>string</var> to be shown as
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HTML interpreted, <strong>Additional Information</strong> for
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the module <var>module-name</var>. Example:</p>
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<pre class="prettyprint lang-config">AddModuleInfo mod_deflate.c 'See <a \
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href="http://httpd.apache.org/docs/trunk/mod/mod_deflate.html">\
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http://httpd.apache.org/docs/trunk/mod/mod_deflate.html</a>'</pre>
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</div>
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</div>
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<div class="bottomlang">
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<p><span>Available Languages: </span><a href="../en/mod/mod_info.html" title="English"> en </a> |
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<a href="../fr/mod/mod_info.html" hreflang="fr" rel="alternate" title="Fran<61>ais"> fr </a> |
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<a href="../ja/mod/mod_info.html" hreflang="ja" rel="alternate" title="Japanese"> ja </a> |
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<a href="../ko/mod/mod_info.html" hreflang="ko" rel="alternate" title="Korean"> ko </a></p>
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</div><div class="top"><a href="#page-header"><img src="../images/up.gif" alt="top" /></a></div><div class="section"><h2><a id="comments_section" name="comments_section">Comments</a></h2><div class="warning"><strong>Notice:</strong><br />This is not a Q&A section. Comments placed here should be pointed towards suggestions on improving the documentation or server, and may be removed again by our moderators if they are either implemented or considered invalid/off-topic. Questions on how to manage the Apache HTTP Server should be directed at either our IRC channel, #httpd, on Freenode, or sent to our <a href="http://httpd.apache.org/lists.html">mailing lists</a>.</div>
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<p class="apache">Copyright 2017 The Apache Software Foundation.<br />Licensed under the <a href="http://www.apache.org/licenses/LICENSE-2.0">Apache License, Version 2.0</a>.</p>
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<p class="menu"><a href="../mod/">Modules</a> | <a href="../mod/quickreference.html">Directives</a> | <a href="http://wiki.apache.org/httpd/FAQ">FAQ</a> | <a href="../glossary.html">Glossary</a> | <a href="../sitemap.html">Sitemap</a></p></div><script type="text/javascript"><!--//--><![CDATA[//><!--
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