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