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<title>mod_authz_groupfile - Apache HTTP Server Version 2.4</title>
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<div id="preamble"><h1>Apache Module mod_authz_groupfile</h1>
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<p><span>Available Languages: </span><a href="../en/mod/mod_authz_groupfile.html" title="English"> en </a> |
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<table class="module"><tr><th><a href="module-dict.html#Description">Description:</a></th><td>Group authorization using plaintext files</td></tr>
<tr><th><a href="module-dict.html#Status">Status:</a></th><td>Base</td></tr>
<tr><th><a href="module-dict.html#ModuleIdentifier">Module Identifier:</a></th><td>authz_groupfile_module</td></tr>
<tr><th><a href="module-dict.html#SourceFile">Source File:</a></th><td>mod_authz_groupfile.c</td></tr>
<tr><th><a href="module-dict.html#Compatibility">Compatibility:</a></th><td>Available in Apache 2.1 and later</td></tr></table>
<h3>Summary</h3>
<p>This module provides authorization capabilities so that
authenticated users can be allowed or denied access to portions
of the web site by group membership. Similar functionality is
provided by <code class="module"><a href="../mod/mod_authz_dbm.html">mod_authz_dbm</a></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="#requiredirectives">The Require Directives</a></li>
</ul><h3 class="directives">Directives</h3>
<ul id="toc">
<li><img alt="" src="../images/down.gif" /> <a href="#authgroupfile">AuthGroupFile</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_authz_groupfile">Known issues</a></li><li><a href="https://bz.apache.org/bugzilla/enter_bug.cgi?product=Apache%20httpd-2&component=mod_authz_groupfile">Report a bug</a></li></ul><h3>See also</h3>
<ul class="seealso">
<li><code class="directive"><a href="../mod/mod_authz_core.html#require">Require</a></code></li>
<li><a href="#comments_section">Comments</a></li></ul></div>
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<div class="section">
<h2><a name="requiredirectives" id="requiredirectives">The Require Directives</a></h2>
<p>Apache's <code class="directive"><a href="../mod/mod_authz_core.html#require">Require</a></code>
directives are used during the authorization phase to ensure that
a user is allowed to access a resource. mod_authz_groupfile extends the
authorization types with <code>group</code> and <code>group-file</code>.
</p>
<p>Since v2.4.8, <a href="../expr.html">expressions</a> are supported
within the groupfile require directives.</p>
<h3><a name="reqgroup" id="reqgroup">Require group</a></h3>
<p>This directive specifies group membership that is required for the
user to gain access.</p>
<pre class="prettyprint lang-config">Require group admin</pre>
<h3><a name="reqfilegroup" id="reqfilegroup">Require file-group</a></h3>
<p>When this directive is specified, the filesystem permissions on
the file being accessed are consulted. The user must be a member of
a group with the same name as the group that owns the file.
See <code class="module"><a href="../mod/mod_authz_owner.html">mod_authz_owner</a></code> for more
details.</p>
<pre class="prettyprint lang-config">Require file-group</pre>
</div>
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<div class="directive-section"><h2><a name="AuthGroupFile" id="AuthGroupFile">AuthGroupFile</a> <a name="authgroupfile" id="authgroupfile">Directive</a></h2>
<table class="directive">
<tr><th><a href="directive-dict.html#Description">Description:</a></th><td>Sets the name of a text file containing the list
of user groups for authorization</td></tr>
<tr><th><a href="directive-dict.html#Syntax">Syntax:</a></th><td><code>AuthGroupFile <var>file-path</var></code></td></tr>
<tr><th><a href="directive-dict.html#Context">Context:</a></th><td>directory, .htaccess</td></tr>
<tr><th><a href="directive-dict.html#Override">Override:</a></th><td>AuthConfig</td></tr>
<tr><th><a href="directive-dict.html#Status">Status:</a></th><td>Base</td></tr>
<tr><th><a href="directive-dict.html#Module">Module:</a></th><td>mod_authz_groupfile</td></tr>
</table>
<p>The <code class="directive">AuthGroupFile</code> directive sets the
name of a textual file containing the list of user groups for user
authorization. <var>File-path</var> is the path to the group
file. If it is not absolute, it is treated as relative to the <code class="directive"><a href="../mod/core.html#serverroot">ServerRoot</a></code>.</p>
<p>Each line of the group file contains a groupname followed by a
colon, followed by the member usernames separated by spaces.</p>
<div class="example"><h3>Example:</h3><p><code>
mygroup: bob joe anne
</code></p></div>
<p>Note that searching large text files is <em>very</em>
inefficient; <code class="directive"><a href="../mod/mod_authz_dbm.html#authdbmgroupfile">AuthDBMGroupFile</a></code> provides a much better performance.</p>
<div class="warning"><h3>Security</h3>
<p>Make sure that the <code class="directive">AuthGroupFile</code> is
stored outside the document tree of the web-server; do <em>not</em>
put it in the directory that it protects. Otherwise, clients may
be able to download the <code class="directive">AuthGroupFile</code>.</p>
</div>
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