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<div id="preamble"><h1>Apache Module mod_authz_groupfile</h1>
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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"><h3 class="directives">Directives</h3>
<ul id="toc">
<li><img alt="" src="../images/down.gif" /> <a href="#authgroupfile">AuthGroupFile</a></li>
<li><img alt="" src="../images/down.gif" /> <a href="#authzgroupfileauthoritative">AuthzGroupFileAuthoritative</a></li>
</ul>
<h3>See also</h3>
<ul class="seealso">
<li><code class="directive"><a href="../mod/core.html#require">Require</a></code></li>
<li><code class="directive"><a href="../mod/core.html#satisfy">Satisfy</a></code></li>
</ul></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>
</div>
<div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div>
<div class="directive-section"><h2><a name="AuthzGroupFileAuthoritative" id="AuthzGroupFileAuthoritative">AuthzGroupFileAuthoritative</a> <a name="authzgroupfileauthoritative" id="authzgroupfileauthoritative">Directive</a></h2>
<table class="directive">
<tr><th><a href="directive-dict.html#Description">Description:</a></th><td>Sets whether authorization will be passed on to lower level
modules</td></tr>
<tr><th><a href="directive-dict.html#Syntax">Syntax:</a></th><td><code>AuthzGroupFileAuthoritative On|Off</code></td></tr>
<tr><th><a href="directive-dict.html#Default">Default:</a></th><td><code>AuthzGroupFileAuthoritative On</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>Setting the <code class="directive">AuthzGroupFileAuthoritative</code>
directive explicitly to <code>Off</code> allows for
group authorization to be passed on to lower level modules (as defined
in the <code>modules.c</code> files) if there is <strong>no
group</strong> matching the supplied userID.</p>
<p>By default, control is not passed on and an unknown group
will result in an Authentication Required reply. Not
setting it thus keeps the system secure and forces an NCSA
compliant behaviour.</p>
<div class="warning"><h3>Security</h3>
<p>Do consider the implications of allowing a user to
allow fall-through in his <code>.htaccess</code> file; and verify
that this is really what you want; Generally it is easier to just
secure a single <code>.htpasswd</code> file, than it is to secure
a database which might have more access interfaces.</p>
</div>
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