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| <div id="preamble"><h1>Apache Module mod_authn_dbm</h1> |
| <div class="toplang"> |
| <p><span>Available Languages: </span><a href="../en/mod/mod_authn_dbm.html" title="English"> en </a> | |
| <a href="../fr/mod/mod_authn_dbm.html" hreflang="fr" rel="alternate" title="Français"> fr </a> | |
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| <a href="../ko/mod/mod_authn_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>User authentication 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>authn_dbm_module</td></tr> |
| <tr><th><a href="module-dict.html#SourceFile">Source File:</a></th><td>mod_authn_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 authentication front-ends such as |
| <code class="module"><a href="../mod/mod_auth_digest.html">mod_auth_digest</a></code> and <code class="module"><a href="../mod/mod_auth_basic.html">mod_auth_basic</a></code> |
| to authenticate users by looking up users in <dfn>dbm</dfn> password |
| files. Similar functionality is provided by |
| <code class="module"><a href="../mod/mod_authn_file.html">mod_authn_file</a></code>.</p> |
| |
| <p>When using <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>, this module is invoked via the |
| <code class="directive"><a href="../mod/mod_auth_basic.html#authbasicprovider">AuthBasicProvider</a></code> or |
| <code class="directive"><a href="../mod/mod_auth_digest.html#authdigestprovider">AuthDigestProvider</a></code> |
| with the <code>dbm</code> value.</p> |
| </div> |
| <div id="quickview"><h3 class="directives">Directives</h3> |
| <ul id="toc"> |
| <li><img alt="" src="../images/down.gif" /> <a href="#authdbmtype">AuthDBMType</a></li> |
| <li><img alt="" src="../images/down.gif" /> <a href="#authdbmuserfile">AuthDBMUserFile</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_authn_dbm">Known issues</a></li><li><a href="https://bz.apache.org/bugzilla/enter_bug.cgi?product=Apache%20httpd-2&component=mod_authn_dbm">Report a bug</a></li></ul><h3>See also</h3> |
| <ul class="seealso"> |
| <li><code class="directive"><a href="../mod/mod_authn_core.html#authname">AuthName</a></code></li> |
| <li><code class="directive"><a href="../mod/mod_authn_core.html#authtype">AuthType</a></code></li> |
| <li> |
| <code class="directive"><a href="../mod/mod_auth_basic.html#authbasicprovider">AuthBasicProvider</a></code> |
| </li> |
| <li> |
| <code class="directive"><a href="../mod/mod_auth_digest.html#authdigestprovider">AuthDigestProvider</a></code> |
| </li> |
| <li><code class="program"><a href="../programs/htpasswd.html">htpasswd</a></code></li> |
| <li><code class="program"><a href="../programs/htdbm.html">htdbm</a></code></li> |
| <li><a href="../misc/password_encryptions.html">Password Formats</a></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="directive-section"><h2><a name="AuthDBMType" id="AuthDBMType">AuthDBMType</a> <a name="authdbmtype" id="authdbmtype">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 passwords</td></tr> |
| <tr><th><a href="directive-dict.html#Syntax">Syntax:</a></th><td><code>AuthDBMType default|SDBM|GDBM|NDBM|DB</code></td></tr> |
| <tr><th><a href="directive-dict.html#Default">Default:</a></th><td><code>AuthDBMType 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_authn_dbm</td></tr> |
| </table> |
| <p>Sets the type of database file that is used to store the passwords. |
| The default database type is determined at compile time. The |
| availability of other types of database files also depends on |
| <a href="../programs/configure.html#options">compile-time settings</a>.</p> |
| |
| <p>For example, in order to enable the support for Berkeley DB |
| (correspondent to the <code>db</code> type) the |
| <code>--with-berkeley-db</code> option needs to be added to httpd's |
| configure to generate the necessary DSO.</p> |
| |
| <p>It is crucial that whatever program you use to create your password |
| files is configured to use the same type of 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="AuthDBMUserFile" id="AuthDBMUserFile">AuthDBMUserFile</a> <a name="authdbmuserfile" id="authdbmuserfile">Directive</a></h2> |
| <table class="directive"> |
| <tr><th><a href="directive-dict.html#Description">Description:</a></th><td>Sets the name of a database file containing the list of users and |
| passwords for authentication</td></tr> |
| <tr><th><a href="directive-dict.html#Syntax">Syntax:</a></th><td><code>AuthDBMUserFile <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_authn_dbm</td></tr> |
| </table> |
| <p>The <code class="directive">AuthDBMUserFile</code> directive sets the |
| name of a DBM file containing the list of users and passwords for |
| user authentication. <var>File-path</var> is the absolute path to |
| the user file.</p> |
| |
| <p>The user file is keyed on the username. The value for a user is |
| the encrypted password, optionally followed by a colon and arbitrary |
| data. The colon and the data following it will be ignored by the |
| server.</p> |
| |
| <div class="warning"><h3>Security:</h3> |
| <p>Make sure that the <code class="directive">AuthDBMUserFile</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 will be able to |
| download the <code class="directive">AuthDBMUserFile</code>.</p> |
| </div> |
| |
| <p>The encrypted password format depends on which authentication |
| frontend (e.g. <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>) is being used. See <a href="../misc/password_encryptions.html">Password Formats</a> for |
| more information.</p> |
| |
| <p>Important compatibility note: The implementation of |
| <code>dbmopen</code> in the Apache modules reads the string length of |
| the hashed values from the DBM data structures, rather than relying |
| upon the string being NULL-appended. Some applications, such as |
| the Netscape web server, rely upon the string being |
| NULL-appended, so if you are having trouble using DBM files |
| interchangeably between applications this may be a part of the |
| problem.</p> |
| |
| <p>A perl script called |
| <code class="program"><a href="../programs/dbmmanage.html">dbmmanage</a></code> is included with |
| Apache. This program can be used to create and update DBM |
| format password files for use with this module. Another |
| tool for maintaining the DBM files is the included program |
| <code class="program"><a href="../programs/htdbm.html">htdbm</a></code>.</p> |
| |
| </div> |
| </div> |
| <div class="bottomlang"> |
| <p><span>Available Languages: </span><a href="../en/mod/mod_authn_dbm.html" title="English"> en </a> | |
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| <a href="../ko/mod/mod_authn_dbm.html" hreflang="ko" rel="alternate" title="Korean"> ko </a></p> |
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