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| <p class="apache">Apache HTTP Server Version 2.4</p> |
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| <div id="preamble"><h1>Apache Module mod_authz_dbm</h1> |
| <div class="toplang"> |
| <p><span>Available Languages: </span><a href="../en/mod/mod_authz_dbm.html" title="English"> en </a> | |
| <a href="../fr/mod/mod_authz_dbm.html" hreflang="fr" rel="alternate" title="Français"> fr </a> | |
| <a href="../ko/mod/mod_authz_dbm.html" hreflang="ko" rel="alternate" title="Korean"> ko </a></p> |
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| <table class="module"><tr><th><a href="module-dict.html#Description">Description:</a></th><td>Group authorization using DBM files</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_dbm_module</td></tr> |
| <tr><th><a href="module-dict.html#SourceFile">Source File:</a></th><td>mod_authz_dbm.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_groupfile.html">mod_authz_groupfile</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> |
| <li><img alt="" src="../images/down.gif" /> <a href="#examples">Example usage</a></li> |
| </ul><h3 class="directives">Directives</h3> |
| <ul id="toc"> |
| <li><img alt="" src="../images/down.gif" /> <a href="#authdbmgroupfile">AuthDBMGroupFile</a></li> |
| <li><img alt="" src="../images/down.gif" /> <a href="#authzdbmtype">AuthzDBMType</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_dbm">Known issues</a></li><li><a href="https://bz.apache.org/bugzilla/enter_bug.cgi?product=Apache%20httpd-2&component=mod_authz_dbm">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> |
| <div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div> |
| <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_dbm extends the |
| authorization types with <code>dbm-group</code>.</p> |
| |
| <p>Since v2.4.8, <a href="../expr.html">expressions</a> are supported |
| within the DBM require directives.</p> |
| |
| <h3><a name="reqgroup" id="reqgroup">Require dbm-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 dbm-group admin</pre> |
| |
| |
| |
| |
| <h3><a name="reqfilegroup" id="reqfilegroup">Require dbm-file-group</a></h3> |
| |
| <p>When this directive is specified, the user must be a member of the group |
| assigned to the file being accessed.</p> |
| |
| <pre class="prettyprint lang-config">Require dbm-file-group</pre> |
| |
| |
| |
| |
| </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">Example usage</a></h2> |
| |
| <p><em>Note that using mod_authz_dbm requires you to require <code>dbm-group</code> |
| instead of <code>group</code>:</em> |
| </p> |
| <pre class="prettyprint lang-config"><Directory "/foo/bar"> |
| AuthType Basic |
| AuthName "Secure Area" |
| AuthBasicProvider dbm |
| AuthDBMUserFile "site/data/users" |
| AuthDBMGroupFile "site/data/users" |
| Require dbm-group admin |
| </Directory></pre> |
| |
| </div> |
| <div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div> |
| <div class="directive-section"><h2><a name="AuthDBMGroupFile" id="AuthDBMGroupFile">AuthDBMGroupFile</a> <a name="authdbmgroupfile" id="authdbmgroupfile">Directive</a></h2> |
| <table class="directive"> |
| <tr><th><a href="directive-dict.html#Description">Description:</a></th><td>Sets the name of the database file containing the list |
| of user groups for authorization</td></tr> |
| <tr><th><a href="directive-dict.html#Syntax">Syntax:</a></th><td><code>AuthDBMGroupFile <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>Extension</td></tr> |
| <tr><th><a href="directive-dict.html#Module">Module:</a></th><td>mod_authz_dbm</td></tr> |
| </table> |
| <p>The <code class="directive">AuthDBMGroupFile</code> directive sets the |
| name of a DBM file containing the list of user groups for user |
| authorization. <var>File-path</var> is the absolute path to the |
| group file.</p> |
| |
| <p>The group file is keyed on the username. The value for a |
| user is a comma-separated list of the groups to which the users |
| belongs. There must be no whitespace within the value, and it |
| must never contain any colons.</p> |
| |
| <div class="warning"><h3>Security</h3> |
| <p>Make sure that the <code class="directive">AuthDBMGroupFile</code> is |
| stored outside the document tree of the web-server. Do |
| <strong>not</strong> put it in the directory that it protects. |
| Otherwise, clients will be able to download the |
| <code class="directive">AuthDBMGroupFile</code> unless otherwise |
| protected.</p> |
| </div> |
| |
| <p>Combining Group and Password DBM files: In some cases it is |
| easier to manage a single database which contains both the |
| password and group details for each user. This simplifies any |
| support programs that need to be written: they now only have to |
| deal with writing to and locking a single DBM file. This can be |
| accomplished by first setting the group and password files to |
| point to the same DBM:</p> |
| |
| <pre class="prettyprint lang-config">AuthDBMGroupFile "/www/userbase" |
| AuthDBMUserFile "/www/userbase"</pre> |
| |
| |
| <p>The key for the single DBM is the username. The value consists |
| of</p> |
| |
| <div class="example"><p><code> |
| Encrypted Password : List of Groups [ : (ignored) ] |
| </code></p></div> |
| |
| <p>The password section contains the encrypted |
| password as before. This is followed by a colon and the comma |
| separated list of groups. Other data may optionally be left in the |
| DBM file after another colon; it is ignored by the authorization |
| module. This is what www.telescope.org uses for its combined |
| password and group database.</p> |
| |
| </div> |
| <div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div> |
| <div class="directive-section"><h2><a name="AuthzDBMType" id="AuthzDBMType">AuthzDBMType</a> <a name="authzdbmtype" id="authzdbmtype">Directive</a></h2> |
| <table class="directive"> |
| <tr><th><a href="directive-dict.html#Description">Description:</a></th><td>Sets the type of database file that is used to |
| store list of user groups</td></tr> |
| <tr><th><a href="directive-dict.html#Syntax">Syntax:</a></th><td><code>AuthzDBMType default|SDBM|GDBM|NDBM|DB</code></td></tr> |
| <tr><th><a href="directive-dict.html#Default">Default:</a></th><td><code>AuthzDBMType default</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_dbm</td></tr> |
| </table> |
| <p>Sets the type of database file that is used to store the list |
| of user groups. |
| The default database type is determined at compile time. The |
| availability of other types of database files also depends on |
| <a href="../install.html#dbm">compile-time settings</a>.</p> |
| |
| <p>It is crucial that whatever program you use to create your group |
| files is configured to use the same type of database.</p> |
| |
| </div> |
| </div> |
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| <a href="../ko/mod/mod_authz_dbm.html" hreflang="ko" rel="alternate" title="Korean"> ko </a></p> |
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