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   8 <title>mod_authz_dbm - Apache HTTP Server</title>
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  21 <div id="page-content">
  22 <div id="preamble"><h1>Apache Module mod_authz_dbm</h1>
  23 <div class="toplang">
  24 <p><span>Available Languages: </span><a href="../en/mod/mod_authz_dbm.html" title="English">&nbsp;en&nbsp;</a> |
  25 <a href="../ko/mod/mod_authz_dbm.html" hreflang="ko" rel="alternate" title="Korean">&nbsp;ko&nbsp;</a></p>
  26 </div>
  27 <table class="module"><tr><th><a href="module-dict.html#Description">Description:</a></th><td>Group authorization using DBM files</td></tr>
  28 <tr><th><a href="module-dict.html#Status">Status:</a></th><td>Extension</td></tr>
  29 <tr><th><a href="module-dict.html#ModuleIdentifier">Module Identifier:</a></th><td>authz_dbm_module</td></tr>
  30 <tr><th><a href="module-dict.html#SourceFile">Source File:</a></th><td>mod_authz_dbm.c</td></tr>
  31 <tr><th><a href="module-dict.html#Compatibility">Compatibility:</a></th><td>Available in Apache 2.1 and later</td></tr></table>
  32 <h3>Summary</h3>
  33
  34     <p>This module provides authorization capabilities so that
  35        authenticated users can be allowed or denied access to portions
  36        of the web site by group membership. Similar functionality is
  37        provided by <code class="module"><a href="../mod/mod_authz_groupfile.html">mod_authz_groupfile</a></code>.</p>
  38 </div>
  39 <div id="quickview"><h3 class="directives">Directives</h3>
  40 <ul id="toc">
  41 <li><img alt="" src="../images/down.gif" /> <a href="#authdbmgroupfile">AuthDBMGroupFile</a></li>
  42 <li><img alt="" src="../images/down.gif" /> <a href="#authzdbmtype">AuthzDBMType</a></li>
  43 </ul>
  44 <h3>See also</h3>
  45 <ul class="seealso">
  46 <li><code class="directive"><a href="../mod/core.html#require">Require</a></code></li>
  47 </ul></div>
  48
  49 <div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div>
  50 <div class="directive-section"><h2><a name="AuthDBMGroupFile" id="AuthDBMGroupFile">AuthDBMGroupFile</a> <a name="authdbmgroupfile" id="authdbmgroupfile">Directive</a></h2>
  51 <table class="directive">
  52 <tr><th><a href="directive-dict.html#Description">Description:</a></th><td>Sets the name of the database file containing the list
  53 of user groups for authorization</td></tr>
  54 <tr><th><a href="directive-dict.html#Syntax">Syntax:</a></th><td><code>AuthDBMGroupFile <var>file-path</var></code></td></tr>
  55 <tr><th><a href="directive-dict.html#Context">Context:</a></th><td>directory, .htaccess</td></tr>
  56 <tr><th><a href="directive-dict.html#Override">Override:</a></th><td>AuthConfig</td></tr>
  57 <tr><th><a href="directive-dict.html#Status">Status:</a></th><td>Extension</td></tr>
  58 <tr><th><a href="directive-dict.html#Module">Module:</a></th><td>mod_authz_dbm</td></tr>
  59 </table>
  60     <p>The <code class="directive">AuthDBMGroupFile</code> directive sets the
  61     name of a DBM file containing the list of user groups for user
  62     authorization.  <var>File-path</var> is the absolute path to the
  63     group file.</p>
  64
  65     <p>The group file is keyed on the username. The value for a
  66     user is a comma-separated list of the groups to which the users
  67     belongs. There must be no whitespace within the value, and it
  68     must never contain any colons.</p>
  69
  70     <div class="warning"><h3>Security</h3>
  71       <p>Make sure that the <code class="directive">AuthDBMGroupFile</code> is
  72       stored outside the document tree of the web-server. Do
  73       <strong>not</strong> put it in the directory that it protects.
  74       Otherwise, clients will be able to download the
  75       <code class="directive">AuthDBMGroupFile</code> unless otherwise
  76       protected.</p>
  77     </div>
  78
  79     <p>Combining Group and Password DBM files: In some cases it is
  80     easier to manage a single database which contains both the
  81     password and group details for each user. This simplifies any
  82     support programs that need to be written: they now only have to
  83     deal with writing to and locking a single DBM file. This can be
  84     accomplished by first setting the group and password files to
  85     point to the same DBM:</p>
  86
  87     <div class="example"><p><code>
  88       AuthDBMGroupFile /www/userbase<br />
  89       AuthDBMUserFile /www/userbase
  90     </code></p></div>
  91
  92     <p>The key for the single DBM is the username. The value consists
  93     of</p>
  94
  95     <div class="example"><p><code>
  96       Encrypted Password : List of Groups [ : (ignored) ]
  97     </code></p></div>
  98
  99     <p>The password section contains the encrypted
 100     password as before. This is followed by a colon and the comma
 101     separated list of groups. Other data may optionally be left in the
 102     DBM file after another colon; it is ignored by the authorization
 103     module. This is what www.telescope.org uses for its combined
 104     password and group database.</p>
 105
 106 </div>
 107 <div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div>
 108 <div class="directive-section"><h2><a name="AuthzDBMType" id="AuthzDBMType">AuthzDBMType</a> <a name="authzdbmtype" id="authzdbmtype">Directive</a></h2>
 109 <table class="directive">
 110 <tr><th><a href="directive-dict.html#Description">Description:</a></th><td>Sets the type of database file that is used to
 111 store list of user groups</td></tr>
 112 <tr><th><a href="directive-dict.html#Syntax">Syntax:</a></th><td><code>AuthzDBMType default|SDBM|GDBM|NDBM|DB</code></td></tr>
 113 <tr><th><a href="directive-dict.html#Default">Default:</a></th><td><code>AuthzDBMType default</code></td></tr>
 114 <tr><th><a href="directive-dict.html#Context">Context:</a></th><td>directory, .htaccess</td></tr>
 115 <tr><th><a href="directive-dict.html#Override">Override:</a></th><td>AuthConfig</td></tr>
 116 <tr><th><a href="directive-dict.html#Status">Status:</a></th><td>Extension</td></tr>
 117 <tr><th><a href="directive-dict.html#Module">Module:</a></th><td>mod_authz_dbm</td></tr>
 118 </table>
 119     <p>Sets the type of database file that is used to store the list
 120     of user groups.
 121     The default database type is determined at compile time.  The
 122     availability of other types of database files also depends on
 123     <a href="../install.html#dbm">compile-time settings</a>.</p>
 124
 125     <p>It is crucial that whatever program you use to create your group
 126     files is configured to use the same type of database.</p>
 127
 128 </div>
 129 </div>
 130 <div class="bottomlang">
 131 <p><span>Available Languages: </span><a href="../en/mod/mod_authz_dbm.html" title="English">&nbsp;en&nbsp;</a> |
 132 <a href="../ko/mod/mod_authz_dbm.html" hreflang="ko" rel="alternate" title="Korean">&nbsp;ko&nbsp;</a></p>
 133 </div><div id="footer">
 134 <p class="apache">Copyright 2006 The Apache Software Foundation.<br />Licensed under the <a href="http://www.apache.org/licenses/LICENSE-2.0">Apache License, Version 2.0</a>.</p>
 135 <p class="menu"><a href="../mod/">Modules</a> | <a href="../mod/directives.html">Directives</a> | <a href="../faq/">FAQ</a> | <a href="../glossary.html">Glossary</a> | <a href="../sitemap.html">Sitemap</a></p></div>
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