2.4.x/docs/manual/mod/mod_info.html.en - httpd - Git at Google

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 <p class="menu"><a href="../mod/">Modules</a> | <a href="../mod/directives.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>
 <p class="apache">Apache HTTP Server Version 2.4</p>
 <img alt="" src="../images/feather.png" /></div>
 <div class="up"><a href="./"><img title="&lt;-" alt="&lt;-" src="../images/left.gif" /></a></div>
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 <a href="http://www.apache.org/">Apache</a> &gt; <a href="http://httpd.apache.org/">HTTP Server</a> &gt; <a href="http://httpd.apache.org/docs/">Documentation</a> &gt; <a href="../">Version 2.4</a> &gt; <a href="./">Modules</a></div>
 <div id="page-content">
 <div id="preamble"><h1>Apache Module mod_info</h1>
 <div class="toplang">
 <p><span>Available Languages: </span><a href="../en/mod/mod_info.html" title="English">&nbsp;en&nbsp;</a> |
 <a href="../fr/mod/mod_info.html" hreflang="fr" rel="alternate" title="Français">&nbsp;fr&nbsp;</a> |
 <a href="../ja/mod/mod_info.html" hreflang="ja" rel="alternate" title="Japanese">&nbsp;ja&nbsp;</a> |
 <a href="../ko/mod/mod_info.html" hreflang="ko" rel="alternate" title="Korean">&nbsp;ko&nbsp;</a></p>
 </div>
 <table class="module"><tr><th><a href="module-dict.html#Description">Description:</a></th><td>Provides a comprehensive overview of the server
 configuration</td></tr>
 <tr><th><a href="module-dict.html#Status">Status:</a></th><td>Extension</td></tr>
 <tr><th><a href="module-dict.html#ModuleIdentifier">Module Identifier:</a></th><td>info_module</td></tr>
 <tr><th><a href="module-dict.html#SourceFile">Source File:</a></th><td>mod_info.c</td></tr></table>
 <h3>Summary</h3>

     <p>To configure <code class="module"><a href="../mod/mod_info.html">mod_info</a></code>, add the following to your
     <code>httpd.conf</code> file.</p>

     <pre class="prettyprint lang-config">&lt;Location "/server-info"&gt;
     SetHandler server-info
 &lt;/Location&gt;</pre>


     <p>You may wish to use <code class="module"><a href="../mod/mod_authz_host.html">mod_authz_host</a></code> inside the
     <code class="directive"><a href="../mod/core.html#location">&lt;Location&gt;</a></code>
     directive to limit access to your server configuration
     information:</p>

     <pre class="prettyprint lang-config">&lt;Location "/server-info"&gt;
     SetHandler server-info
     Require host example.com
 &lt;/Location&gt;</pre>


     <p>Once configured, the server information is obtained by
     accessing <code>http://your.host.example.com/server-info</code></p>
 </div>
 <div id="quickview"><a href="https://www.apache.org/foundation/contributing.html" class="badge"><img src="https://www.apache.org/images/SupportApache-small.png" alt="Support Apache!" /></a><h3>Topics</h3>
 <ul id="topics">
 <li><img alt="" src="../images/down.gif" /> <a href="#security">Security Issues</a></li>
 <li><img alt="" src="../images/down.gif" /> <a href="#queries">Selecting the information shown</a></li>
 <li><img alt="" src="../images/down.gif" /> <a href="#startup">Dumping the configuration on startup</a></li>
 <li><img alt="" src="../images/down.gif" /> <a href="#limitations">Known Limitations</a></li>
 </ul><h3 class="directives">Directives</h3>
 <ul id="toc">
 <li><img alt="" src="../images/down.gif" /> <a href="#addmoduleinfo">AddModuleInfo</a></li>
 </ul>
 <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__&amp;list_id=144532&amp;product=Apache%20httpd-2&amp;query_format=specific&amp;order=changeddate%20DESC%2Cpriority%2Cbug_severity&amp;component=mod_info">Known issues</a></li><li><a href="https://bz.apache.org/bugzilla/enter_bug.cgi?product=Apache%20httpd-2&amp;component=mod_info">Report a bug</a></li></ul><h3>See also</h3>
 <ul class="seealso">
 <li><a href="#comments_section">Comments</a></li></ul></div>
 <div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div>
 <div class="section">
 <h2><a name="security" id="security">Security Issues</a></h2>
     <p>Once <code class="module"><a href="../mod/mod_info.html">mod_info</a></code> is loaded into the server, its
     handler capability is available in <em>all</em> configuration
     files, including per-directory files (<em>e.g.</em>,
     <code>.htaccess</code>). This may have security-related
     ramifications for your site.</p>

     <p>In particular, this module can leak sensitive information
     from the configuration directives of other Apache modules such as
     system paths, usernames/passwords, database names, etc. Therefore,
     this module should <strong>only</strong> be
     used in a controlled environment and always with caution.</p>

     <p>You will probably want to use <code class="module"><a href="../mod/mod_authz_host.html">mod_authz_host</a></code>
     to limit access to your server configuration information.</p>

     <div class="example"><h3>Access control</h3><pre class="prettyprint lang-config">&lt;Location "/server-info"&gt;
     SetHandler server-info
     # Allow access from server itself
     Require ip 127.0.0.1

     # Additionally, allow access from local workstation
     Require ip 192.168.1.17
 &lt;/Location&gt;</pre>
 </div>
 </div><div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div>
 <div class="section">
 <h2><a name="queries" id="queries">Selecting the information shown</a></h2>
     <p>By default, the server information includes a list of
     all enabled modules, and for each module, a description of
     the directives understood by that module, the hooks implemented
     by that module, and the relevant directives from the current
     configuration.</p>

     <p>Other views of the configuration information are available by
     appending a query to the <code>server-info</code> request. For
     example, <code>http://your.host.example.com/server-info?config</code>
     will show all configuration directives.</p>

     <dl>
         <dt><code>?&lt;module-name&gt;</code></dt>
             <dd>Only information relevant to the named module</dd>
         <dt><code>?config</code></dt>
             <dd>Just the configuration directives, not sorted by module</dd>
         <dt><code>?hooks</code></dt>
             <dd>Only the list of Hooks each module is attached to</dd>
         <dt><code>?list</code></dt>
             <dd>Only a simple list of enabled modules</dd>
         <dt><code>?server</code></dt>
             <dd>Only the basic server information</dd>
         <dt><code>?providers</code></dt>
             <dd>List the providers that are available on your server</dd>
     </dl>
 </div><div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div>
 <div class="section">
 <h2><a name="startup" id="startup">Dumping the configuration on startup</a></h2>
     <p>If the config define <code>-DDUMP_CONFIG</code> is set,
     <code class="module"><a href="../mod/mod_info.html">mod_info</a></code> will dump the pre-parsed configuration to
     <code>stdout</code> during server startup.</p>

     <pre class="prettyprint lang-sh">httpd -DDUMP_CONFIG -k start</pre>


     <p>Pre-parsed means that directives like
     <code class="directive"><a href="../mod/core.html#ifdefine">&lt;IfDefine&gt;</a></code> and
     <code class="directive"><a href="../mod/core.html#ifmodule">&lt;IfModule&gt;</a></code> are
     evaluated and environment variables are replaced. However it does
     not represent the final state of the configuration. In particular,
     it does not represent the merging or overriding that may happen
     for repeated directives.</p>

     <p>This is roughly equivalent to the <code>?config</code> query.</p>
 </div><div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div>
 <div class="section">
 <h2><a name="limitations" id="limitations">Known Limitations</a></h2>
     <p><code class="module"><a href="../mod/mod_info.html">mod_info</a></code> provides its information by reading the
     parsed configuration, rather than reading the original configuration
     file. There are a few limitations as a result of the way the parsed
     configuration tree is created:</p>
     <ul>
       <li>Directives which are executed immediately rather than being
           stored in the parsed configuration are not listed. These include
           <code class="directive"><a href="../mod/core.html#serverroot">ServerRoot</a></code>,
           <code class="directive"><a href="../mod/mod_so.html#loadmodule">LoadModule</a></code>, and
           <code class="directive"><a href="../mod/mod_so.html#loadfile">LoadFile</a></code>.</li>
       <li>Directives which control the configuration file itself, such as
           <code class="directive"><a href="../mod/core.html#include">Include</a></code>,
           <code class="directive"><a href="../mod/core.html#ifmodule">&lt;IfModule&gt;</a></code> and
           <code class="directive"><a href="../mod/core.html#ifdefine">&lt;IfDefine&gt;</a></code> are not
           listed, but the included configuration directives are.</li>
       <li>Comments are not listed. (This may be considered a feature.)</li>
       <li>Configuration directives from <code>.htaccess</code> files are
           not listed (since they do not form part of the permanent server
           configuration).</li>
       <li>Container directives such as
           <code class="directive"><a href="../mod/core.html#directory">&lt;Directory&gt;</a></code>
           are listed normally, but <code class="module"><a href="../mod/mod_info.html">mod_info</a></code> cannot figure
           out the line number for the closing
           <code class="directive"><a href="../mod/core.html#directory">&lt;/Directory&gt;</a></code>.</li>
       <li>Directives generated by third party modules such as <a href="http://perl.apache.org">mod_perl</a>
           might not be listed.</li>
     </ul>
 </div>
 <div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div>
 <div class="directive-section"><h2><a name="AddModuleInfo" id="AddModuleInfo">AddModuleInfo</a> <a name="addmoduleinfo" id="addmoduleinfo">Directive</a></h2>
 <table class="directive">
 <tr><th><a href="directive-dict.html#Description">Description:</a></th><td>Adds additional information to the module
 information displayed by the server-info handler</td></tr>
 <tr><th><a href="directive-dict.html#Syntax">Syntax:</a></th><td><code>AddModuleInfo <var>module-name</var> <var>string</var></code></td></tr>
 <tr><th><a href="directive-dict.html#Context">Context:</a></th><td>server config, virtual host</td></tr>
 <tr><th><a href="directive-dict.html#Status">Status:</a></th><td>Extension</td></tr>
 <tr><th><a href="directive-dict.html#Module">Module:</a></th><td>mod_info</td></tr>
 </table>
     <p>This allows the content of <var>string</var> to be shown as
     HTML interpreted, <strong>Additional Information</strong> for
     the module <var>module-name</var>. Example:</p>

     <pre class="prettyprint lang-config">AddModuleInfo mod_deflate.c 'See &lt;a \
     href="http://httpd.apache.org/docs/2.4/mod/mod_deflate.html"&gt;\
     http://httpd.apache.org/docs/2.4/mod/mod_deflate.html&lt;/a&gt;'</pre>


 </div>
 </div>
 <div class="bottomlang">
 <p><span>Available Languages: </span><a href="../en/mod/mod_info.html" title="English">&nbsp;en&nbsp;</a> |
 <a href="../fr/mod/mod_info.html" hreflang="fr" rel="alternate" title="Français">&nbsp;fr&nbsp;</a> |
 <a href="../ja/mod/mod_info.html" hreflang="ja" rel="alternate" title="Japanese">&nbsp;ja&nbsp;</a> |
 <a href="../ko/mod/mod_info.html" hreflang="ko" rel="alternate" title="Korean">&nbsp;ko&nbsp;</a></p>
 </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&amp;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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	<title>mod_info - Apache HTTP Server Version 2.4</title>
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	<p class="apache">Apache HTTP Server Version 2.4</p>
	<img alt="" src="../images/feather.png" /></div>
	<div class="up"><a href="./"><img title="<-" alt="<-" src="../images/left.gif" /></a></div>
	<div id="path">
	<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 2.4</a> > <a href="./">Modules</a></div>
	<div id="page-content">
	<div id="preamble"><h1>Apache Module mod_info</h1>
	<div class="toplang">
	<p><span>Available Languages: </span><a href="../en/mod/mod_info.html" title="English"> en </a> \|
	<a href="../fr/mod/mod_info.html" hreflang="fr" rel="alternate" title="Français"> fr </a> \|
	<a href="../ja/mod/mod_info.html" hreflang="ja" rel="alternate" title="Japanese"> ja </a> \|
	<a href="../ko/mod/mod_info.html" hreflang="ko" rel="alternate" title="Korean"> ko </a></p>
	</div>
	<table class="module"><tr><th><a href="module-dict.html#Description">Description:</a></th><td>Provides a comprehensive overview of the server
	configuration</td></tr>
	<tr><th><a href="module-dict.html#Status">Status:</a></th><td>Extension</td></tr>
	<tr><th><a href="module-dict.html#ModuleIdentifier">Module Identifier:</a></th><td>info_module</td></tr>
	<tr><th><a href="module-dict.html#SourceFile">Source File:</a></th><td>mod_info.c</td></tr></table>
	<h3>Summary</h3>

	<p>To configure <code class="module"><a href="../mod/mod_info.html">mod_info</a></code>, add the following to your
	<code>httpd.conf</code> file.</p>

	<pre class="prettyprint lang-config"><Location "/server-info">
	SetHandler server-info
	</Location></pre>


	<p>You may wish to use <code class="module"><a href="../mod/mod_authz_host.html">mod_authz_host</a></code> inside the
	<code class="directive"><a href="../mod/core.html#location"><Location></a></code>
	directive to limit access to your server configuration
	information:</p>

	<pre class="prettyprint lang-config"><Location "/server-info">
	SetHandler server-info
	Require host example.com
	</Location></pre>


	<p>Once configured, the server information is obtained by
	accessing <code>http://your.host.example.com/server-info</code></p>
	</div>
	<div id="quickview"><a href="https://www.apache.org/foundation/contributing.html" class="badge"><img src="https://www.apache.org/images/SupportApache-small.png" alt="Support Apache!" /></a><h3>Topics</h3>
	<ul id="topics">
	<li><img alt="" src="../images/down.gif" /> <a href="#security">Security Issues</a></li>
	<li><img alt="" src="../images/down.gif" /> <a href="#queries">Selecting the information shown</a></li>
	<li><img alt="" src="../images/down.gif" /> <a href="#startup">Dumping the configuration on startup</a></li>
	<li><img alt="" src="../images/down.gif" /> <a href="#limitations">Known Limitations</a></li>
	</ul><h3 class="directives">Directives</h3>
	<ul id="toc">
	<li><img alt="" src="../images/down.gif" /> <a href="#addmoduleinfo">AddModuleInfo</a></li>
	</ul>
	<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>
	<ul class="seealso">
	<li><a href="#comments_section">Comments</a></li></ul></div>
	<div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div>
	<div class="section">
	<h2><a name="security" id="security">Security Issues</a></h2>
	<p>Once <code class="module"><a href="../mod/mod_info.html">mod_info</a></code> is loaded into the server, its
	handler capability is available in <em>all</em> configuration
	files, including per-directory files (<em>e.g.</em>,
	<code>.htaccess</code>). This may have security-related
	ramifications for your site.</p>

	<p>In particular, this module can leak sensitive information
	from the configuration directives of other Apache modules such as
	system paths, usernames/passwords, database names, etc. Therefore,
	this module should <strong>only</strong> be
	used in a controlled environment and always with caution.</p>

	<p>You will probably want to use <code class="module"><a href="../mod/mod_authz_host.html">mod_authz_host</a></code>
	to limit access to your server configuration information.</p>

	<div class="example"><h3>Access control</h3><pre class="prettyprint lang-config"><Location "/server-info">
	SetHandler server-info
	# Allow access from server itself
	Require ip 127.0.0.1

	# Additionally, allow access from local workstation
	Require ip 192.168.1.17
	</Location></pre>
	</div>
	</div><div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div>
	<div class="section">
	<h2><a name="queries" id="queries">Selecting the information shown</a></h2>
	<p>By default, the server information includes a list of
	all enabled modules, and for each module, a description of
	the directives understood by that module, the hooks implemented
	by that module, and the relevant directives from the current
	configuration.</p>

	<p>Other views of the configuration information are available by
	appending a query to the <code>server-info</code> request. For
	example, <code>http://your.host.example.com/server-info?config</code>
	will show all configuration directives.</p>

	<dl>
	<dt><code>?<module-name></code></dt>
	<dd>Only information relevant to the named module</dd>
	<dt><code>?config</code></dt>
	<dd>Just the configuration directives, not sorted by module</dd>
	<dt><code>?hooks</code></dt>
	<dd>Only the list of Hooks each module is attached to</dd>
	<dt><code>?list</code></dt>
	<dd>Only a simple list of enabled modules</dd>
	<dt><code>?server</code></dt>
	<dd>Only the basic server information</dd>
	<dt><code>?providers</code></dt>
	<dd>List the providers that are available on your server</dd>
	</dl>
	</div><div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div>
	<div class="section">
	<h2><a name="startup" id="startup">Dumping the configuration on startup</a></h2>
	<p>If the config define <code>-DDUMP_CONFIG</code> is set,
	<code class="module"><a href="../mod/mod_info.html">mod_info</a></code> will dump the pre-parsed configuration to
	<code>stdout</code> during server startup.</p>

	<pre class="prettyprint lang-sh">httpd -DDUMP_CONFIG -k start</pre>


	<p>Pre-parsed means that directives like
	<code class="directive"><a href="../mod/core.html#ifdefine"><IfDefine></a></code> and
	<code class="directive"><a href="../mod/core.html#ifmodule"><IfModule></a></code> are
	evaluated and environment variables are replaced. However it does
	not represent the final state of the configuration. In particular,
	it does not represent the merging or overriding that may happen
	for repeated directives.</p>

	<p>This is roughly equivalent to the <code>?config</code> query.</p>
	</div><div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div>
	<div class="section">
	<h2><a name="limitations" id="limitations">Known Limitations</a></h2>
	<p><code class="module"><a href="../mod/mod_info.html">mod_info</a></code> provides its information by reading the
	parsed configuration, rather than reading the original configuration
	file. There are a few limitations as a result of the way the parsed
	configuration tree is created:</p>
	<ul>
	<li>Directives which are executed immediately rather than being
	stored in the parsed configuration are not listed. These include
	<code class="directive"><a href="../mod/core.html#serverroot">ServerRoot</a></code>,
	<code class="directive"><a href="../mod/mod_so.html#loadmodule">LoadModule</a></code>, and
	<code class="directive"><a href="../mod/mod_so.html#loadfile">LoadFile</a></code>.</li>
	<li>Directives which control the configuration file itself, such as
	<code class="directive"><a href="../mod/core.html#include">Include</a></code>,
	<code class="directive"><a href="../mod/core.html#ifmodule"><IfModule></a></code> and
	<code class="directive"><a href="../mod/core.html#ifdefine"><IfDefine></a></code> are not
	listed, but the included configuration directives are.</li>
	<li>Comments are not listed. (This may be considered a feature.)</li>
	<li>Configuration directives from <code>.htaccess</code> files are
	not listed (since they do not form part of the permanent server
	configuration).</li>
	<li>Container directives such as
	<code class="directive"><a href="../mod/core.html#directory"><Directory></a></code>
	are listed normally, but <code class="module"><a href="../mod/mod_info.html">mod_info</a></code> cannot figure
	out the line number for the closing
	<code class="directive"><a href="../mod/core.html#directory"></Directory></a></code>.</li>
	<li>Directives generated by third party modules such as <a href="http://perl.apache.org">mod_perl</a>
	might not be listed.</li>
	</ul>
	</div>
	<div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div>
	<div class="directive-section"><h2><a name="AddModuleInfo" id="AddModuleInfo">AddModuleInfo</a> <a name="addmoduleinfo" id="addmoduleinfo">Directive</a></h2>
	<table class="directive">
	<tr><th><a href="directive-dict.html#Description">Description:</a></th><td>Adds additional information to the module
	information displayed by the server-info handler</td></tr>
	<tr><th><a href="directive-dict.html#Syntax">Syntax:</a></th><td><code>AddModuleInfo <var>module-name</var> <var>string</var></code></td></tr>
	<tr><th><a href="directive-dict.html#Context">Context:</a></th><td>server config, virtual host</td></tr>
	<tr><th><a href="directive-dict.html#Status">Status:</a></th><td>Extension</td></tr>
	<tr><th><a href="directive-dict.html#Module">Module:</a></th><td>mod_info</td></tr>
	</table>
	<p>This allows the content of <var>string</var> to be shown as
	HTML interpreted, <strong>Additional Information</strong> for
	the module <var>module-name</var>. Example:</p>

	<pre class="prettyprint lang-config">AddModuleInfo mod_deflate.c 'See <a \
	href="http://httpd.apache.org/docs/2.4/mod/mod_deflate.html">\
	http://httpd.apache.org/docs/2.4/mod/mod_deflate.html</a>'</pre>


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