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<?xml version="1.0" encoding="ISO-8859-1"?>
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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
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<html xmlns="http://www.w3.org/1999/xhtml" lang="en" xml:lang="en"><head><!--
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XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
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This file is generated from xml source: DO NOT EDIT
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<title>mod_authz_dbd - Apache HTTP Server</title>
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<link href="../style/css/manual.css" rel="stylesheet" media="all" type="text/css" title="Main stylesheet" />
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<link href="../style/css/manual-loose-100pc.css" rel="alternate stylesheet" media="all" type="text/css" title="No Sidebar - Default font size" />
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<link href="../style/css/manual-print.css" rel="stylesheet" media="print" type="text/css" />
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<link href="../images/favicon.ico" rel="shortcut icon" /></head>
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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/directives.html">Directives</a> | <a href="../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 2.3</p>
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<img alt="" src="../images/feather.gif" /></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 2.3</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_dbd</h1>
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<div class="toplang">
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<p><span>Available Languages: </span><a href="../en/mod/mod_authz_dbd.html" title="English"> en </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>Group Authorization and Login using SQL</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<EFBFBD>Identifier:</a></th><td>authz_dbd_module</td></tr>
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<tr><th><a href="module-dict.html#SourceFile">Source<EFBFBD>File:</a></th><td>mod_authz_dbd.c</td></tr>
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<tr><th><a href="module-dict.html#Compatibility">Compatibility:</a></th><td>Available in Apache 2.2 and later</td></tr></table>
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<h3>Summary</h3>
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<p>This module provides authorization capabilities so that
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authenticated users can be allowed or denied access to portions
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of the web site by group membership. It also provides
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database/backend login/logout in conjunction with
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<code class="module"><a href="../mod/mod_authn_dbd.html">mod_authn_dbd</a></code>.</p>
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</div>
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<div id="quickview"><h3 class="directives">Directives</h3>
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<ul id="toc">
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<li><img alt="" src="../images/down.gif" /> <a href="#authzdbdlogintoreferer">AuthzDBDLoginToReferer</a></li>
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<li><img alt="" src="../images/down.gif" /> <a href="#authzdbdquery">AuthzDBDQuery</a></li>
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<li><img alt="" src="../images/down.gif" /> <a href="#authzdbdredirectquery">AuthzDBDRedirectQuery</a></li>
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</ul>
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<h3>Topics</h3>
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<ul id="topics">
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<li><img alt="" src="../images/down.gif" /> <a href="#login">Database Login</a></li>
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<li><img alt="" src="../images/down.gif" /> <a href="#client">Client Login</a></li>
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<li><img alt="" src="../images/down.gif" /> <a href="#example">Configuration Example</a></li>
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</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><code class="directive"><a href="../mod/mod_dbd.html#dbdriver">DBDriver</a></code></li>
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<li><code class="directive"><a href="../mod/mod_dbd.html#dbdparams">DBDParams</a></code></li>
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</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="login" id="login">Database Login</a></h2>
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<p>In addition to the standard authz function of checking group
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membership, this module provides database Login/Logout capability.
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Specifically, we can maintain a logged in/logged out status in
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the database, and control the status via designated URLs (subject
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of course to users supplying the necessary credentials).</p>
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<p>This works by defining two special
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<code class="directive"><a href="../mod/mod_authz_core.html#require">Require</a></code> types:
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<code>Require dbd-login</code> and <code>Require dbd-logout</code>.
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For usage details, see the configuration example below.</p>
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</div><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="client" id="client">Client Login</a></h2>
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<p>In conjunction with server login/logout, we may wish to implement
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clientside login/out, for example by setting and unsetting a cookie
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or other such token. Although this is not the business of an authz
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module, client session management software should be able to tie its
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operation in to database login/logout. To support this,
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<code class="module"><a href="../mod/mod_authz_dbd.html">mod_authz_dbd</a></code> exports an optional hook that will
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be run whenever a user successfully logs into or out of the database.
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Session management modules can use the hook to implement functions
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to start and end a client session.</p>
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</div><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="example" id="example">Configuration Example</a></h2>
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<div class="example"><pre><code>
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# DBD Configuration
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DBDriver oracle
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DBDParams "dbname=apacheauth user=apache pass=xxxxxx"
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DBDMin 4
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DBDKeep 8
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DBDMax 20
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DBDExptime 300
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<Directory /usr/www/my.site/team-private/>
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# authn with mod_authn_dbd
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AuthType Basic
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AuthName Team
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AuthBasicProvider dbd
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AuthDBDUserPWQuery "SELECT pass FROM authn WHERE user = %s AND login = true"
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# Require dbd-group and authz_dbd implementation
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Require dbd-group team
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AuthzDBDQuery "SELECT group FROM authz WHERE user = %s"
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# When a user fails to authn/authz, invite them to login
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ErrorDocument 401 /team-private/login-form.html
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<Files login.html>
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# Don't require that we're already logged in!
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AuthDBDUserPWQuery "SELECT pass FROM authn WHERE user = %s"
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# dbd-login action executes a query to set our own state
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Require dbd-login
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AuthzDBDQuery "UPDATE authn SET login = true WHERE user = %s"
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# Return user to referring page (if any) on successful login
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AuthzDBDLoginToReferer On
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</Files>
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<Files logout.html>
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# dbd-logout action executes a query to set our own state
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Require dbd-logout
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AuthzDBDQuery "UPDATE authn SET login = false WHERE user = %s"
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</Files>
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</Directory>
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</code></pre></div>
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</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="directive-section"><h2><a name="AuthzDBDLoginToReferer" id="AuthzDBDLoginToReferer">AuthzDBDLoginToReferer</a> <a name="authzdbdlogintoreferer" id="authzdbdlogintoreferer">Directive</a></h2>
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<table class="directive">
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<tr><th><a href="directive-dict.html#Description">Description:</a></th><td>Determines whether to redirect the Client to the Referring
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page on successful login or logout if a <code>Referer</code> request
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header is present</td></tr>
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<tr><th><a href="directive-dict.html#Syntax">Syntax:</a></th><td><code>AuthzDBDLoginToReferer On|Off</code></td></tr>
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<tr><th><a href="directive-dict.html#Default">Default:</a></th><td><code>AuthzDBDLoginToReferer Off</code></td></tr>
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<tr><th><a href="directive-dict.html#Context">Context:</a></th><td>directory</td></tr>
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<tr><th><a href="directive-dict.html#Status">Status:</a></th><td>Extension</td></tr>
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<tr><th><a href="directive-dict.html#Module">Module:</a></th><td>mod_authz_dbd</td></tr>
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</table>
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<p>In conjunction with <code>Require dbd-login</code> or
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<code>Require dbd-logout</code>, this provides the option to
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redirect the client back to the Referring page (the URL in
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the <code>Referer</code> HTTP request header, if present.
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When there is no <code>Referer</code> header,
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<code>AuthzDBDLoginToReferer On</code> will be ignored.</p>
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</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="directive-section"><h2><a name="AuthzDBDQuery" id="AuthzDBDQuery">AuthzDBDQuery</a> <a name="authzdbdquery" id="authzdbdquery">Directive</a></h2>
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<table class="directive">
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<tr><th><a href="directive-dict.html#Description">Description:</a></th><td>Specify the SQL Query for the required operation</td></tr>
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<tr><th><a href="directive-dict.html#Syntax">Syntax:</a></th><td><code>AuthzDBDQuery SQL-Query</code></td></tr>
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<tr><th><a href="directive-dict.html#Context">Context:</a></th><td>directory</td></tr>
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<tr><th><a href="directive-dict.html#Status">Status:</a></th><td>Extension</td></tr>
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<tr><th><a href="directive-dict.html#Module">Module:</a></th><td>mod_authz_dbd</td></tr>
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</table>
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<p>The <code class="directive">AuthzDBDQuery</code> specifies an SQL
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query to run. The purpose of the query depends on the
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<code class="directive"><a href="../mod/mod_authz_core.html#require">Require</a></code> directive in
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effect.</p>
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<ul>
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<li>With <code>Require dbd-group</code>, it specifies a query
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to look up groups for the current user. This is the standard
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functionality of other authz modules such as
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<code class="module"><a href="../mod/mod_authz_file.html">mod_authz_file</a></code> and <code class="module"><a href="../mod/mod_authz_dbm.html">mod_authz_dbm</a></code>.
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In this case it will typically take the form<br />
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<code>AuthzDBDQuery "SELECT group FROM groups WHERE user= %s"</code>
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</li>
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<li>With <code>Require dbd-login</code> or <code>Require dbd-logout</code>,
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it will never deny access, but will instead execute an SQL Query
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designed to log the user (who must already be authenticated with
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<code class="module"><a href="../mod/mod_authn_dbd.html">mod_authn_dbd</a></code>) in or out. Such a query will
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typically take the form<br />
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<code>AuthzDBDQuery "UPDATE authn SET login = true WHERE user = %s"</code>
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</li>
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</ul>
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</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="directive-section"><h2><a name="AuthzDBDRedirectQuery" id="AuthzDBDRedirectQuery">AuthzDBDRedirectQuery</a> <a name="authzdbdredirectquery" id="authzdbdredirectquery">Directive</a></h2>
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<table class="directive">
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<tr><th><a href="directive-dict.html#Description">Description:</a></th><td>Specify a query to look up a login page for the user</td></tr>
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<tr><th><a href="directive-dict.html#Syntax">Syntax:</a></th><td><code>AuthzDBDRedirectQuery SQL-Query</code></td></tr>
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<tr><th><a href="directive-dict.html#Context">Context:</a></th><td>directory</td></tr>
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<tr><th><a href="directive-dict.html#Status">Status:</a></th><td>Extension</td></tr>
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<tr><th><a href="directive-dict.html#Module">Module:</a></th><td>mod_authz_dbd</td></tr>
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</table>
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<p>Specifies an optional query to use after successful login
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(or logout) to redirect the user to a page, which may be
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specific to the user. Such a query will take the form<br />
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<code>AuthzDBDRedirectQuery "SELECT userpage FROM userpages WHERE user = %s"</code>
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</p>
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<p>Note that <code class="directive">AuthzDBDLoginToReferer</code> takes
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precedence if both are set.</p>
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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_dbd.html" title="English"> en </a></p>
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</div><div id="footer">
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<p class="apache">Copyright 2008 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>
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<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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