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<div id="preamble"><h1>Apache Module mod_dir</h1>
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<p><span>Available Languages: </span><a href="../en/mod/mod_dir.html" title="English">&nbsp;en&nbsp;</a> |
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<table class="module"><tr><th><a href="module-dict.html#Description">Description:</a></th><td>Provides for "trailing slash" redirects and
    serving directory index 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&nbsp;Identifier:</a></th><td>dir_module</td></tr>
<tr><th><a href="module-dict.html#SourceFile">Source&nbsp;File:</a></th><td>mod_dir.c</td></tr></table>
<h3>Summary</h3>

    <p>The index of a directory can come from one of two sources:</p>

    <ul>
      <li>A file written by the user, typically called
      <code>index.html</code>. The <code class="directive"><a href="#directoryindex">DirectoryIndex</a></code> directive sets the
      name of this file. This is controlled by
      <code class="module"><a href="../mod/mod_dir.html">mod_dir</a></code>.</li>

      <li>Otherwise, a listing generated by the server. This is
      provided by <code class="module"><a href="../mod/mod_autoindex.html">mod_autoindex</a></code>.</li>
    </ul>
    <p>The two functions are separated so that you can completely
    remove (or replace) automatic index generation should you want
    to.</p>

    <p>A "trailing slash" redirect is issued when the server
    receives a request for a URL
    <code>http://servername/foo/dirname</code> where
    <code>dirname</code> is a directory. Directories require a
    trailing slash, so <code class="module"><a href="../mod/mod_dir.html">mod_dir</a></code> issues a redirect to
    <code>http://servername/foo/dirname/</code>.</p>
</div>
<div id="quickview"><h3 class="directives">Directives</h3>
<ul id="toc">
<li><img alt="" src="../images/down.gif"> <a href="#directorycheckhandler">DirectoryCheckHandler</a></li>
<li><img alt="" src="../images/down.gif"> <a href="#directoryindex">DirectoryIndex</a></li>
<li><img alt="" src="../images/down.gif"> <a href="#directoryindexredirect">DirectoryIndexRedirect</a></li>
<li><img alt="" src="../images/down.gif"> <a href="#directoryslash">DirectorySlash</a></li>
<li><img alt="" src="../images/down.gif"> <a href="#fallbackresource">FallbackResource</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_dir">Known issues</a></li><li><a href="https://bz.apache.org/bugzilla/enter_bug.cgi?product=Apache%20httpd-2&amp;component=mod_dir">Report a bug</a></li></ul></div>

<div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif"></a></div>
<div class="directive-section"><h2 id="directorycheckhandler"><span id="DirectoryCheckHandler">DirectoryCheckHandler</span> Directive <a title="Permanent link" href="#directorycheckhandler" class="permalink">&para;</a></h2>
<table class="directive">
<tr><th><a href="directive-dict.html#Description">Description:</a></th><td>Toggle how this module responds when another handler is configured</td></tr>
<tr><th><a href="directive-dict.html#Syntax">Syntax:</a></th><td><code>DirectoryCheckHandler On|Off</code></td></tr>
<tr><th><a href="directive-dict.html#Default">Default:</a></th><td><code>DirectoryCheckHandler Off</code></td></tr>
<tr><th><a href="directive-dict.html#Context">Context:</a></th><td>server config, virtual host, directory, .htaccess</td></tr>
<tr><th><a href="directive-dict.html#Override">Override:</a></th><td>Indexes</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_dir</td></tr>
<tr><th><a href="directive-dict.html#Compatibility">Compatibility:</a></th><td>Available in 2.4.8 and later.  Releases prior to 2.4 implicitly
act as if "DirectoryCheckHandler ON" was specified.</td></tr>
</table>
    <p>The <code class="directive">DirectoryCheckHandler</code> directive determines
    whether <code class="module"><a href="../mod/mod_dir.html">mod_dir</a></code> should check for directory indexes or
    add trailing slashes when some other handler has been configured for
    the current URL. Handlers can be set by directives such as
    <code class="directive"><a href="../mod/core.html#sethandler">SetHandler</a></code> or by other modules,
    such as <code class="module"><a href="../mod/mod_rewrite.html">mod_rewrite</a></code> during per-directory substitutions.
    </p>

    <p>When set to <code>On</code>, <code class="module"><a href="../mod/mod_dir.html">mod_dir</a></code> will
    take no action if another handler has already been configured
    for the URL.</p>

    <p>When set to <code>Off</code> (the default), <code class="module"><a href="../mod/mod_dir.html">mod_dir</a></code>
    will process the request regardless of any other handler that may be
    configured. This allows directory indexes to be served even when a
    <code class="directive">SetHandler</code> directive is specified for an entire
    directory, but it can also result in conflicts with modules such as
    <code class="module"><a href="../mod/mod_rewrite.html">mod_rewrite</a></code>.</p>

</div>
<div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif"></a></div>
<div class="directive-section"><h2 id="directoryindex"><span id="DirectoryIndex">DirectoryIndex</span> Directive <a title="Permanent link" href="#directoryindex" class="permalink">&para;</a></h2>
<table class="directive">
<tr><th><a href="directive-dict.html#Description">Description:</a></th><td>List of resources to look for when the client requests
a directory</td></tr>
<tr><th><a href="directive-dict.html#Syntax">Syntax:</a></th><td><code>DirectoryIndex
    disabled | <var>local-url</var> [<var>local-url</var>] ...</code></td></tr>
<tr><th><a href="directive-dict.html#Default">Default:</a></th><td><code>DirectoryIndex index.html</code></td></tr>
<tr><th><a href="directive-dict.html#Context">Context:</a></th><td>server config, virtual host, directory, .htaccess</td></tr>
<tr><th><a href="directive-dict.html#Override">Override:</a></th><td>Indexes</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_dir</td></tr>
</table>
    <p>The <code class="directive">DirectoryIndex</code> directive sets the
    list of resources to look for, when the client requests an index
    of the directory by specifying a / at the end of the directory
    name.  <var>Local-url</var> is the (%-encoded) URL of a document on
    the server relative to the requested directory; it is usually the
    name of a file in the directory. Several URLs may be given, in
    which case the server will return the first one that it finds.  If
    none of the resources exist and the <code>Indexes</code> option is
    set, the server will generate its own listing of the
    directory.</p>

    <div class="example"><h3>Example</h3><pre class="prettyprint lang-config">DirectoryIndex index.html</pre>
</div>

    <p>then a request for <code>http://example.com/docs/</code> would
    return <code>http://example.com/docs/index.html</code> if it
    exists, or would list the directory if it did not.</p>

    <p>Note that the documents do not need to be relative to the
    directory;</p>

    <pre class="prettyprint lang-config">DirectoryIndex index.html index.txt  /cgi-bin/index.pl</pre>


    <p>would cause the CGI script <code>/cgi-bin/index.pl</code> to be
    executed if neither <code>index.html</code> or <code>index.txt</code>
    existed in a directory.</p>

    <p>A single argument of "disabled" prevents <code class="module"><a href="../mod/mod_dir.html">mod_dir</a></code> from
    searching for an index.  An argument of "disabled" will be interpreted
    literally if it has any arguments before or after it, even if they are "disabled"
    as well.</p>

    <div class="note">Multiple <code class="directive">DirectoryIndex</code>
    directives within the <a href="../sections.html"><em>same context</em></a> will add
    to the list of resources to look for rather than replace:
    </div>
    <pre class="prettyprint lang-config"># Example A: Set index.html as an index page, then add index.php to that list as well.
&lt;Directory "/foo"&gt;
    DirectoryIndex index.html
    DirectoryIndex index.php
&lt;/Directory&gt;

# Example B: This is identical to example A, except it's done with a single directive.
&lt;Directory "/foo"&gt;
    DirectoryIndex index.html index.php
&lt;/Directory&gt;

# Example C: To replace the list, you must explicitly reset it first:
# In this example, only index.php will remain as an index resource.
&lt;Directory "/foo"&gt;
    DirectoryIndex index.html
    DirectoryIndex disabled
    DirectoryIndex index.php
&lt;/Directory&gt;</pre>



</div>
<div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif"></a></div>
<div class="directive-section"><h2 id="directoryindexredirect"><span id="DirectoryIndexRedirect">DirectoryIndexRedirect</span> Directive <a title="Permanent link" href="#directoryindexredirect" class="permalink">&para;</a></h2>
<table class="directive">
<tr><th><a href="directive-dict.html#Description">Description:</a></th><td>Configures an external redirect for directory indexes.
</td></tr>
<tr><th><a href="directive-dict.html#Syntax">Syntax:</a></th><td><code>DirectoryIndexRedirect on | off | permanent | temp | seeother |
<var>3xx-code</var>
</code></td></tr>
<tr><th><a href="directive-dict.html#Default">Default:</a></th><td><code>DirectoryIndexRedirect off</code></td></tr>
<tr><th><a href="directive-dict.html#Context">Context:</a></th><td>server config, virtual host, directory, .htaccess</td></tr>
<tr><th><a href="directive-dict.html#Override">Override:</a></th><td>Indexes</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_dir</td></tr>
<tr><th><a href="directive-dict.html#Compatibility">Compatibility:</a></th><td>Available in version 2.3.14 and later</td></tr>
</table>
    <p>By default, the <code class="directive">DirectoryIndex</code> is selected
    and returned transparently to the client.  <code class="directive">DirectoryIndexRedirect</code> causes an external redirect
    to instead be issued.</p>

    <p>The argument can be:</p>
    <ul>
     <li><code>on</code>: issues a 302 redirection to the index resource.</li>
     <li><code>off</code>: does not issue a redirection. This is the legacy behavior of mod_dir.</li>
     <li><code>permanent</code>: issues a 301 (permanent) redirection to the index resource.</li>
     <li><code>temp</code>: this has the same effect as <code>on</code></li>
     <li><code>seeother</code>: issues a 303 redirection (also known as "See Other") to the index resource.</li>
     <li><var>3xx-code</var>: issues a redirection marked by the chosen 3xx code.</li>
    </ul>


    <div class="example"><h3>Example</h3><pre class="prettyprint lang-config">DirectoryIndexRedirect on</pre>
</div>

    <p>A request for <code>http://example.com/docs/</code> would
    return a temporary redirect to <code>http://example.com/docs/index.html</code>
    if it exists.</p>


</div>
<div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif"></a></div>
<div class="directive-section"><h2 id="directoryslash"><span id="DirectorySlash">DirectorySlash</span> Directive <a title="Permanent link" href="#directoryslash" class="permalink">&para;</a></h2>
<table class="directive">
<tr><th><a href="directive-dict.html#Description">Description:</a></th><td>Toggle trailing slash redirects on or off</td></tr>
<tr><th><a href="directive-dict.html#Syntax">Syntax:</a></th><td><code>DirectorySlash On|Off</code></td></tr>
<tr><th><a href="directive-dict.html#Default">Default:</a></th><td><code>DirectorySlash On</code></td></tr>
<tr><th><a href="directive-dict.html#Context">Context:</a></th><td>server config, virtual host, directory, .htaccess</td></tr>
<tr><th><a href="directive-dict.html#Override">Override:</a></th><td>Indexes</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_dir</td></tr>
</table>
    <p>The <code class="directive">DirectorySlash</code> directive determines whether
    <code class="module"><a href="../mod/mod_dir.html">mod_dir</a></code> should fixup URLs pointing to a directory or
    not.</p>

    <p>Typically if a user requests a resource without a trailing slash, which
    points to a directory, <code class="module"><a href="../mod/mod_dir.html">mod_dir</a></code> redirects him to the same
    resource, but <em>with</em> trailing slash for some good reasons:</p>

    <ul>
    <li>The user is finally requesting the canonical URL of the resource</li>
    <li><code class="module"><a href="../mod/mod_autoindex.html">mod_autoindex</a></code> works correctly. Since it doesn't emit
    the path in the link, it would point to the wrong path.</li>
    <li><code class="directive"><a href="#directoryindex">DirectoryIndex</a></code> will be evaluated
    <em>only</em> for directories requested with trailing slash.</li>
    <li>Relative URL references inside html pages will work correctly.</li>
    </ul>

    <p>If you don't want this effect <em>and</em> the reasons above don't
    apply to you, you can turn off the redirect as shown below. However,
    be aware that there are possible security implications to doing
    this.</p>

    <pre class="prettyprint lang-config"># see security warning below!
&lt;Location "/some/path"&gt;
    DirectorySlash Off
    SetHandler some-handler
&lt;/Location&gt;</pre>


    <div class="warning"><h3>Security Warning</h3>
    <p>Turning off the trailing slash redirect may result in an information
    disclosure. Consider a situation where <code class="module"><a href="../mod/mod_autoindex.html">mod_autoindex</a></code> is
    active (<code>Options +Indexes</code>) and <code class="directive"><a href="#directoryindex">DirectoryIndex</a></code> is set to a valid resource (say,
    <code>index.html</code>) and there's no other special handler defined for
    that URL. In this case a request with a trailing slash would show the
    <code>index.html</code> file. <strong>But a request without trailing slash
    would list the directory contents</strong>.</p>
    </div>
	<p>Also note that some browsers may erroneously change POST requests into GET
	(thus discarding POST data) when a redirect is issued.</p>

</div>
<div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif"></a></div>
<div class="directive-section"><h2 id="fallbackresource"><span id="FallbackResource">FallbackResource</span> Directive <a title="Permanent link" href="#fallbackresource" class="permalink">&para;</a></h2>
<table class="directive">
<tr><th><a href="directive-dict.html#Description">Description:</a></th><td>Define a default URL for requests that don't map to a file or handler</td></tr>
<tr><th><a href="directive-dict.html#Syntax">Syntax:</a></th><td><code>FallbackResource disabled | <var>local-url</var></code></td></tr>
<tr><th><a href="directive-dict.html#Default">Default:</a></th><td><code>disabled - httpd will return 404 (Not Found)</code></td></tr>
<tr><th><a href="directive-dict.html#Context">Context:</a></th><td>server config, virtual host, directory, .htaccess</td></tr>
<tr><th><a href="directive-dict.html#Override">Override:</a></th><td>Indexes</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_dir</td></tr>
<tr><th><a href="directive-dict.html#Compatibility">Compatibility:</a></th><td>The <code>disabled</code> argument is available in version 2.4.4 and
later</td></tr>
</table>
    <p>Use this to set a handler for any URL that doesn't map to anything
    in your filesystem, and would otherwise return HTTP 404 (Not Found).
    For example</p>
    <pre class="prettyprint lang-config">FallbackResource /not-404.php</pre>

    <p>will cause requests for non-existent files to be handled by
    <code>not-404.php</code>, while requests for files that exist
    are unaffected.</p>
    <p>It is frequently desirable to have a single file or resource
    handle all requests to a particular directory, except those requests
    that correspond to an existing file or script. This is often
    referred to as a 'front controller.'</p>
    <p>In earlier versions of httpd, this effect typically required
    <code class="module"><a href="../mod/mod_rewrite.html">mod_rewrite</a></code>, and the use of the <code>-f</code> and
    <code>-d</code> tests for file and directory existence. This now
    requires only one line of configuration.</p>
    <pre class="prettyprint lang-config">FallbackResource /index.php</pre>

    <p>Existing files, such as images, css files, and so on, will be
    served normally.</p>
    <p>Use the <code>disabled</code> argument to disable that feature
    if inheritance from a parent directory is not desired.</p>
    <p>In a sub-URI, such as <em>http://example.com/blog/</em> this
    <em>sub-URI</em> has to be supplied as <var>local-url</var>:</p>
    <pre class="prettyprint lang-config">&lt;Directory "/web/example.com/htdocs/blog"&gt;
    FallbackResource /blog/index.php
&lt;/Directory&gt;
&lt;Directory "/web/example.com/htdocs/blog/images"&gt;
    FallbackResource disabled
&lt;/Directory&gt;</pre>

    <p>A fallback handler (in the above case, <code>/blog/index.php</code>)
    can access the original requested URL via the server variable
    <code>REQUEST_URI</code>. For example, to access this variable in PHP,
    use <code>$_SERVER['REQUEST_URI']</code>.</p>
    <div class="note"><h3>Interaction with other handlers</h3>
    <p><code class="directive">FallbackResource</code> only takes effect when no
    other handler has been assigned to the request. If a directive such as
    <code class="directive"><a href="../mod/core.html#sethandler">SetHandler</a></code> or
    <code class="directive"><a href="../mod/mod_mime.html#addhandler">AddHandler</a></code> has already
    assigned a handler to a URL or file extension,
    <code class="directive">FallbackResource</code> will not override it. For
    example, if you use
    <code>SetHandler application/x-httpd-php</code> in a
    <code class="directive"><a href="../mod/core.html#directory">&lt;Directory&gt;</a></code> section,
    that handler applies to all requests in that directory &mdash; even requests
    for non-existent files &mdash; so <code class="directive">FallbackResource</code>
    will never be invoked.</p></div>

<h3>See also</h3>
<ul>
<li><code class="directive"><a href="../mod/core.html#sethandler">SetHandler</a></code></li>
<li><code class="directive"><a href="../mod/mod_mime.html#addhandler">AddHandler</a></code></li>
<li><code class="directive"><a href="#directorycheckhandler">DirectoryCheckHandler</a></code></li>
</ul>
</div>
</div>
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