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         <p>You may follow <a href="http://httpd.apache.org/docs/current/mod/mod_authz_owner.html">this link</a> to go to the current version of this document.</p></div><div id="preamble"><h1>Apache Module mod_authz_owner</h1>
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 </div>
 <table class="module"><tr><th><a href="module-dict.html#Description">Description:</a></th><td>Authorization based on file ownership</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&#160;Identifier:</a></th><td>authz_owner_module</td></tr>
 <tr><th><a href="module-dict.html#SourceFile">Source&#160;File:</a></th><td>mod_authz_owner.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 authorizes access to files by comparing the userid used
     for HTTP authentication (the web userid) with the file-system owner or
     group of the requested file. The supplied username and password
     must be already properly verified by an authentication module,
     such as <code class="module"><a href="../mod/mod_auth_basic.html">mod_auth_basic</a></code> or
     <code class="module"><a href="../mod/mod_auth_digest.html">mod_auth_digest</a></code>. <code class="module"><a href="../mod/mod_authz_owner.html">mod_authz_owner</a></code>
     recognizes two arguments for the <code class="directive"><a href="../mod/core.html#require">Require</a></code> directive, <code>file-owner</code> and
     <code>file-group</code>, as follows:</p>

     <dl>
       <dt><code>file-owner</code></dt>
       <dd>The supplied web-username must match the system's name for the
       owner of the file being requested. That is, if the operating system
       says the requested file is owned by <code>jones</code>, then the
       username used to access it through the web must be <code>jones</code>
       as well.</dd>

       <dt><code>file-group</code></dt>
       <dd>The name of the system group that owns the file must be present
       in a group database, which is provided, for example, by <code class="module"><a href="../mod/mod_authz_groupfile.html">mod_authz_groupfile</a></code> or <code class="module"><a href="../mod/mod_authz_dbm.html">mod_authz_dbm</a></code>,
       and the web-username must be a member of that group. For example, if
       the operating system says the requested file is owned by (system)
       group <code>accounts</code>, the group <code>accounts</code> must
       appear in the group database and the web-username used in the request
       must be a member of that group.</dd>
     </dl>

     <div class="note"><h3>Note</h3>
       <p>If <code class="module"><a href="../mod/mod_authz_owner.html">mod_authz_owner</a></code> is used in order to authorize
       a resource that is not actually present in the filesystem
       (<em>i.e.</em> a virtual resource), it will deny the access.</p>

       <p>Particularly it will never authorize <a href="../content-negotiation.html#multiviews">content negotiated
       "MultiViews"</a> resources.</p>
     </div>
 </div>
 <div id="quickview"><h3>Topics</h3>
 <ul id="topics">
 <li><img alt="" src="../images/down.gif" /> <a href="#examples">Configuration Examples</a></li>
 </ul><h3 class="directives">Directives</h3>
 <ul id="toc">
 <li><img alt="" src="../images/down.gif" /> <a href="#authzownerauthoritative">AuthzOwnerAuthoritative</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><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="examples" id="examples">Configuration Examples</a></h2>

     <h3><a name="examples.file-owner" id="examples.file-owner">Require file-owner</a></h3>
       <p>Consider a multi-user system running the Apache Web server, with
       each user having his or her own files in <code>~/public_html/private</code>. Assuming that there is a single
       <code class="directive"><a href="../mod/mod_authn_dbm.html#authdbmuserfile">AuthDBMUserFile</a></code> database
       that lists all of their web-usernames, and that these usernames match
       the system's usernames that actually own the files on the server, then
       the following stanza would allow only the user himself access to his
       own files. User <code>jones</code> would not be allowed to access
       files in <code>/home/smith/public_html/private</code> unless they
       were owned by <code>jones</code> instead of <code>smith</code>.</p>

       <div class="example"><p><code>
         &lt;Directory /home/*/public_html/private&gt;<br />
         <span class="indent">
           AuthType Basic<br />
           AuthName MyPrivateFiles<br />
           AuthBasicProvider dbm<br />
           AuthDBMUserFile /usr/local/apache2/etc/.htdbm-all<br />
           Satisfy All<br />
           Require file-owner<br />
         </span>
         &lt;/Directory&gt;
       </code></p></div>


     <h3><a name="examples.file-group" id="examples.file-group">Require file-group</a></h3>
       <p>Consider a system similar to the one described above, but with
       some users that share their project files in
       <code>~/public_html/project-foo</code>. The files are owned by the
       system group <code>foo</code> and there is a single <code class="directive"><a href="../mod/mod_authz_dbm.html#authdbmgroupfile">AuthDBMGroupFile</a></code> database that
       contains all of the web-usernames and their group membership,
       <em>i.e.</em> they must be at least member of a group named
       <code>foo</code>. So if <code>jones</code> and <code>smith</code>
       are both member of the group <code>foo</code>, then both will be
       authorized to access the <code>project-foo</code> directories of
       each other.</p>

       <div class="example"><p><code>
         &lt;Directory /home/*/public_html/project-foo&gt;<br />
         <span class="indent">
           AuthType Basic<br />
           AuthName "Project Foo Files"<br />
           AuthBasicProvider dbm<br />
           <br />
           # combined user/group database<br />
           AuthDBMUserFile  /usr/local/apache2/etc/.htdbm-all<br />
           AuthDBMGroupFile /usr/local/apache2/etc/.htdbm-all<br />
           <br />
           Satisfy All<br />
           Require file-group<br />
         </span>
         &lt;/Directory&gt;
       </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="AuthzOwnerAuthoritative" id="AuthzOwnerAuthoritative">AuthzOwnerAuthoritative</a> <a name="authzownerauthoritative" id="authzownerauthoritative">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>AuthzOwnerAuthoritative On|Off</code></td></tr>
 <tr><th><a href="directive-dict.html#Default">Default:</a></th><td><code>AuthzOwnerAuthoritative 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>Extension</td></tr>
 <tr><th><a href="directive-dict.html#Module">Module:</a></th><td>mod_authz_owner</td></tr>
 </table>
     <p>Setting the <code class="directive">AuthzOwnerAuthoritative</code>
     directive explicitly to <code>Off</code> allows for
     user authorization to be passed on to lower level modules (as defined
     in the <code>modules.c</code> files) if:</p>

     <ul>
     <li>in the case of <code>file-owner</code> the file-system owner does not
     match the supplied web-username or could not be determined, or</li>

     <li>in the case of <code>file-group</code> the file-system group does not
     contain the supplied web-username or could not be determined.</li>
     </ul>

     <p>Note that setting the value to <code>Off</code> also allows the
     combination of <code>file-owner</code> and <code>file-group</code>, so
     access will be allowed if either one or the other (or both) match.</p>

     <p>By default, control is not passed on and an authorization failure
     will result in an "Authentication Required" reply. Not
     setting it to <code>Off</code> thus keeps the system secure and forces
     an NCSA compliant behaviour.</p>

 </div>
 </div>
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	<p class="apache">Apache HTTP Server Version 2.2</p>
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	<p>You may follow <a href="http://httpd.apache.org/docs/current/mod/mod_authz_owner.html">this link</a> to go to the current version of this document.</p></div><div id="preamble"><h1>Apache Module mod_authz_owner</h1>
	<div class="toplang">
	<p><span>Available Languages: </span><a href="../en/mod/mod_authz_owner.html" title="English"> en </a> \|
	<a href="../ja/mod/mod_authz_owner.html" hreflang="ja" rel="alternate" title="Japanese"> ja </a> \|
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	</div>
	<table class="module"><tr><th><a href="module-dict.html#Description">Description:</a></th><td>Authorization based on file ownership</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>authz_owner_module</td></tr>
	<tr><th><a href="module-dict.html#SourceFile">Source File:</a></th><td>mod_authz_owner.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 authorizes access to files by comparing the userid used
	for HTTP authentication (the web userid) with the file-system owner or
	group of the requested file. The supplied username and password
	must be already properly verified by an authentication module,
	such as <code class="module"><a href="../mod/mod_auth_basic.html">mod_auth_basic</a></code> or
	<code class="module"><a href="../mod/mod_auth_digest.html">mod_auth_digest</a></code>. <code class="module"><a href="../mod/mod_authz_owner.html">mod_authz_owner</a></code>
	recognizes two arguments for the <code class="directive"><a href="../mod/core.html#require">Require</a></code> directive, <code>file-owner</code> and
	<code>file-group</code>, as follows:</p>

	<dl>
	<dt><code>file-owner</code></dt>
	<dd>The supplied web-username must match the system's name for the
	owner of the file being requested. That is, if the operating system
	says the requested file is owned by <code>jones</code>, then the
	username used to access it through the web must be <code>jones</code>
	as well.</dd>

	<dt><code>file-group</code></dt>
	<dd>The name of the system group that owns the file must be present
	in a group database, which is provided, for example, by <code class="module"><a href="../mod/mod_authz_groupfile.html">mod_authz_groupfile</a></code> or <code class="module"><a href="../mod/mod_authz_dbm.html">mod_authz_dbm</a></code>,
	and the web-username must be a member of that group. For example, if
	the operating system says the requested file is owned by (system)
	group <code>accounts</code>, the group <code>accounts</code> must
	appear in the group database and the web-username used in the request
	must be a member of that group.</dd>
	</dl>

	<div class="note"><h3>Note</h3>
	<p>If <code class="module"><a href="../mod/mod_authz_owner.html">mod_authz_owner</a></code> is used in order to authorize
	a resource that is not actually present in the filesystem
	(<em>i.e.</em> a virtual resource), it will deny the access.</p>

	<p>Particularly it will never authorize <a href="../content-negotiation.html#multiviews">content negotiated
	"MultiViews"</a> resources.</p>
	</div>
	</div>
	<div id="quickview"><h3>Topics</h3>
	<ul id="topics">
	<li><img alt="" src="../images/down.gif" /> <a href="#examples">Configuration Examples</a></li>
	</ul><h3 class="directives">Directives</h3>
	<ul id="toc">
	<li><img alt="" src="../images/down.gif" /> <a href="#authzownerauthoritative">AuthzOwnerAuthoritative</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><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="examples" id="examples">Configuration Examples</a></h2>

	<h3><a name="examples.file-owner" id="examples.file-owner">Require file-owner</a></h3>
	<p>Consider a multi-user system running the Apache Web server, with
	each user having his or her own files in <code>~/public_html/private</code>. Assuming that there is a single
	<code class="directive"><a href="../mod/mod_authn_dbm.html#authdbmuserfile">AuthDBMUserFile</a></code> database
	that lists all of their web-usernames, and that these usernames match
	the system's usernames that actually own the files on the server, then
	the following stanza would allow only the user himself access to his
	own files. User <code>jones</code> would not be allowed to access
	files in <code>/home/smith/public_html/private</code> unless they
	were owned by <code>jones</code> instead of <code>smith</code>.</p>

	<div class="example"><p><code>
	<Directory /home/*/public_html/private><br />
	<span class="indent">
	AuthType Basic<br />
	AuthName MyPrivateFiles<br />
	AuthBasicProvider dbm<br />
	AuthDBMUserFile /usr/local/apache2/etc/.htdbm-all<br />
	Satisfy All<br />
	Require file-owner<br />
	</span>
	</Directory>
	</code></p></div>


	<h3><a name="examples.file-group" id="examples.file-group">Require file-group</a></h3>
	<p>Consider a system similar to the one described above, but with
	some users that share their project files in
	<code>~/public_html/project-foo</code>. The files are owned by the
	system group <code>foo</code> and there is a single <code class="directive"><a href="../mod/mod_authz_dbm.html#authdbmgroupfile">AuthDBMGroupFile</a></code> database that
	contains all of the web-usernames and their group membership,
	<em>i.e.</em> they must be at least member of a group named
	<code>foo</code>. So if <code>jones</code> and <code>smith</code>
	are both member of the group <code>foo</code>, then both will be
	authorized to access the <code>project-foo</code> directories of
	each other.</p>

	<div class="example"><p><code>
	<Directory /home/*/public_html/project-foo><br />
	<span class="indent">
	AuthType Basic<br />
	AuthName "Project Foo Files"<br />
	AuthBasicProvider dbm<br />
	<br />
	# combined user/group database<br />
	AuthDBMUserFile /usr/local/apache2/etc/.htdbm-all<br />
	AuthDBMGroupFile /usr/local/apache2/etc/.htdbm-all<br />
	<br />
	Satisfy All<br />
	Require file-group<br />
	</span>
	</Directory>
	</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="AuthzOwnerAuthoritative" id="AuthzOwnerAuthoritative">AuthzOwnerAuthoritative</a> <a name="authzownerauthoritative" id="authzownerauthoritative">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>AuthzOwnerAuthoritative On\|Off</code></td></tr>
	<tr><th><a href="directive-dict.html#Default">Default:</a></th><td><code>AuthzOwnerAuthoritative 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>Extension</td></tr>
	<tr><th><a href="directive-dict.html#Module">Module:</a></th><td>mod_authz_owner</td></tr>
	</table>
	<p>Setting the <code class="directive">AuthzOwnerAuthoritative</code>
	directive explicitly to <code>Off</code> allows for
	user authorization to be passed on to lower level modules (as defined
	in the <code>modules.c</code> files) if:</p>

	<ul>
	<li>in the case of <code>file-owner</code> the file-system owner does not
	match the supplied web-username or could not be determined, or</li>

	<li>in the case of <code>file-group</code> the file-system group does not
	contain the supplied web-username or could not be determined.</li>
	</ul>

	<p>Note that setting the value to <code>Off</code> also allows the
	combination of <code>file-owner</code> and <code>file-group</code>, so
	access will be allowed if either one or the other (or both) match.</p>

	<p>By default, control is not passed on and an authorization failure
	will result in an "Authentication Required" reply. Not
	setting it to <code>Off</code> thus keeps the system secure and forces
	an NCSA compliant behaviour.</p>

	</div>
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