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<title>mod_authz_owner - Apache HTTP Server Version 2.5</title>
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<body>
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<div id="page-header">
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<p class="menu"><a href="../mod/">Modules</a> | <a href="../mod/quickreference.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>
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<p class="apache">Apache HTTP Server Version 2.5</p>
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<img alt="" src="../images/feather.png" /></div>
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<div class="up"><a href="./"><img title="<-" alt="<-" src="../images/left.gif" /></a></div>
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<div id="path">
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<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 2.5</a> > <a href="./">Modules</a></div>
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<div id="page-content">
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<div id="preamble"><h1>Apache Module mod_authz_owner</h1>
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<div class="toplang">
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<p><span>Available Languages: </span><a href="../en/mod/mod_authz_owner.html" title="English"> en </a> |
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<a href="../fr/mod/mod_authz_owner.html" hreflang="fr" rel="alternate" title="Français"> fr </a> |
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<a href="../ja/mod/mod_authz_owner.html" hreflang="ja" rel="alternate" title="Japanese"> ja </a> |
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<a href="../ko/mod/mod_authz_owner.html" hreflang="ko" rel="alternate" title="Korean"> ko </a></p>
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</div>
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<table class="module"><tr><th><a href="module-dict.html#Description">Description:</a></th><td>Authorization based on file ownership</td></tr>
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<tr><th><a href="module-dict.html#Status">Status:</a></th><td>Extension</td></tr>
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<tr><th><a href="module-dict.html#ModuleIdentifier">Module Identifier:</a></th><td>authz_owner_module</td></tr>
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<tr><th><a href="module-dict.html#SourceFile">Source File:</a></th><td>mod_authz_owner.c</td></tr></table>
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<h3>Summary</h3>
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<p>This module authorizes access to files by comparing the userid used
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for HTTP authentication (the web userid) with the file-system owner or
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group of the requested file. The supplied username and password
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must be already properly verified by an authentication module,
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such as <code class="module"><a href="../mod/mod_auth_basic.html">mod_auth_basic</a></code> or
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<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>
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recognizes two arguments for the <code class="directive"><a href="../mod/mod_authz_core.html#require">Require</a></code> directive, <code>file-owner</code> and
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<code>file-group</code>, as follows:</p>
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<dl>
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<dt><code>file-owner</code></dt>
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<dd>The supplied web-username must match the system's name for the
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owner of the file being requested. That is, if the operating system
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says the requested file is owned by <code>jones</code>, then the
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username used to access it through the web must be <code>jones</code>
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as well.</dd>
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<dt><code>file-group</code></dt>
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<dd>The name of the system group that owns the file must be present
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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>,
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and the web-username must be a member of that group. For example, if
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the operating system says the requested file is owned by (system)
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group <code>accounts</code>, the group <code>accounts</code> must
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appear in the group database and the web-username used in the request
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must be a member of that group.</dd>
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</dl>
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<div class="note"><h3>Note</h3>
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<p>If <code class="module"><a href="../mod/mod_authz_owner.html">mod_authz_owner</a></code> is used in order to authorize
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a resource that is not actually present in the filesystem
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(<em>i.e.</em> a virtual resource), it will deny the access.</p>
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<p>Particularly it will never authorize <a href="../content-negotiation.html#multiviews">content negotiated
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"MultiViews"</a> resources.</p>
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</div>
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</div>
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<div id="quickview"><h3>Topics</h3>
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<ul id="topics">
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<li><img alt="" src="../images/down.gif" /> <a href="#examples">Configuration Examples</a></li>
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</ul><h3 class="directives">Directives</h3>
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<p>This module provides no
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directives.</p>
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<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_owner">Known issues</a></li><li><a href="https://bz.apache.org/bugzilla/enter_bug.cgi?product=Apache%20httpd-2&component=mod_authz_owner">Report a bug</a></li></ul><h3>See also</h3>
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<ul class="seealso">
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<li><code class="directive"><a href="../mod/mod_authz_core.html#require">Require</a></code></li>
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<li><a href="#comments_section">Comments</a></li></ul></div>
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<div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div>
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<div class="section">
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<h2><a name="examples" id="examples">Configuration Examples</a> <a title="Permanent link" href="#examples" class="permalink">¶</a></h2>
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<h3><a name="examples.file-owner" id="examples.file-owner">Require file-owner</a></h3>
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<p>Consider a multi-user system running the Apache Web server, with
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each user having his or her own files in <code>~/public_html/private</code>. Assuming that there is a single
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<code class="directive"><a href="../mod/mod_authn_dbm.html#authdbmuserfile">AuthDBMUserFile</a></code> database
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that lists all of their web-usernames, and that these usernames match
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the system's usernames that actually own the files on the server, then
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the following stanza would allow only the user himself access to his
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own files. User <code>jones</code> would not be allowed to access
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files in <code>/home/smith/public_html/private</code> unless they
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were owned by <code>jones</code> instead of <code>smith</code>.</p>
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<pre class="prettyprint lang-config"><Directory "/home/*/public_html/private">
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AuthType Basic
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AuthName "MyPrivateFiles"
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AuthBasicProvider dbm
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AuthDBMUserFile "/usr/local/apache2/etc/.htdbm-all"
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Require file-owner
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</Directory></pre>
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<h3><a name="examples.file-group" id="examples.file-group">Require file-group</a></h3>
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<p>Consider a system similar to the one described above, but with
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some users that share their project files in
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<code>~/public_html/project-foo</code>. The files are owned by the
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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
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contains all of the web-usernames and their group membership,
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<em>i.e.</em> they must be at least member of a group named
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<code>foo</code>. So if <code>jones</code> and <code>smith</code>
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are both member of the group <code>foo</code>, then both will be
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authorized to access the <code>project-foo</code> directories of
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each other.</p>
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<pre class="prettyprint lang-config"><Directory "/home/*/public_html/project-foo">
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AuthType Basic
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AuthName "Project Foo Files"
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AuthBasicProvider dbm
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# combined user/group database
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AuthDBMUserFile "/usr/local/apache2/etc/.htdbm-all"
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AuthDBMGroupFile "/usr/local/apache2/etc/.htdbm-all"
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Satisfy All
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Require file-group
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</Directory></pre>
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</div>
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</div>
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<div class="bottomlang">
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<p><span>Available Languages: </span><a href="../en/mod/mod_authz_owner.html" title="English"> en </a> |
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<a href="../fr/mod/mod_authz_owner.html" hreflang="fr" rel="alternate" title="Français"> fr </a> |
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<a href="../ja/mod/mod_authz_owner.html" hreflang="ja" rel="alternate" title="Japanese"> ja </a> |
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<a href="../ko/mod/mod_authz_owner.html" hreflang="ko" rel="alternate" title="Korean"> ko </a></p>
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</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&A section. Comments placed here should be pointed towards suggestions on improving the documentation or server, and may be removed 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 Libera.chat, or sent to our <a href="https://httpd.apache.org/lists.html">mailing lists</a>.</div>
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