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<html lang="en"><head><META http-equiv="Content-Type" content="text/html; charset=UTF-8"><link href="../images/docs-stylesheet.css" rel="stylesheet" type="text/css"><title>Apache Tomcat 8 Configuration Reference (8.5.99) - JASPIC</title></head><body><div id="wrapper"><header><div id="header"><div><div><div class="logo noPrint"><a href="https://tomcat.apache.org/"><img alt="Tomcat Home" src="../images/tomcat.png"></a></div><div style="height: 1px;"></div><div class="asfLogo noPrint"><a href="https://www.apache.org/" target="_blank"><img src="../images/asf-logo.svg" alt="The Apache Software Foundation" style="width: 266px; height: 83px;"></a></div><h1>Apache Tomcat 8 Configuration Reference</h1><div class="versionInfo">
Version 8.5.99,
<time datetime="2024-02-14">Feb 14 2024</time></div><div style="height: 1px;"></div><div style="clear: left;"></div></div></div></div></header><div id="middle"><div><div id="mainLeft" class="noprint"><div><nav><div><h2>Links</h2><ul><li><a href="../index.html">Docs Home</a></li><li><a href="index.html">Config Ref. Home</a></li><li><a href="https://cwiki.apache.org/confluence/display/TOMCAT/FAQ">FAQ</a></li><li><a href="#comments_section">User Comments</a></li></ul></div><div><h2>Top Level Elements</h2><ul><li><a href="server.html">Server</a></li><li><a href="service.html">Service</a></li></ul></div><div><h2>Executors</h2><ul><li><a href="executor.html">Executor</a></li></ul></div><div><h2>Connectors</h2><ul><li><a href="http.html">HTTP/1.1</a></li><li><a href="http2.html">HTTP/2</a></li><li><a href="ajp.html">AJP</a></li></ul></div><div><h2>Containers</h2><ul><li><a href="context.html">Context</a></li><li><a href="engine.html">Engine</a></li><li><a href="host.html">Host</a></li><li><a href="cluster.html">Cluster</a></li></ul></div><div><h2>Nested Components</h2><ul><li><a href="cookie-processor.html">CookieProcessor</a></li><li><a href="credentialhandler.html">CredentialHandler</a></li><li><a href="globalresources.html">Global Resources</a></li><li><a href="jar-scanner.html">JarScanner</a></li><li><a href="jar-scan-filter.html">JarScanFilter</a></li><li><a href="listeners.html">Listeners</a></li><li><a href="loader.html">Loader</a></li><li><a href="manager.html">Manager</a></li><li><a href="realm.html">Realm</a></li><li><a href="resources.html">Resources</a></li><li><a href="sessionidgenerator.html">SessionIdGenerator</a></li><li><a href="valve.html">Valve</a></li></ul></div><div><h2>Cluster Elements</h2><ul><li><a href="cluster.html">Cluster</a></li><li><a href="cluster-manager.html">Manager</a></li><li><a href="cluster-channel.html">Channel</a></li><li><a href="cluster-membership.html">Channel/Membership</a></li><li><a href="cluster-sender.html">Channel/Sender</a></li><li><a href="cluster-receiver.html">Channel/Receiver</a></li><li><a href="cluster-interceptor.html">Channel/Interceptor</a></li><li><a href="cluster-valve.html">Valve</a></li><li><a href="cluster-deployer.html">Deployer</a></li><li><a href="cluster-listener.html">ClusterListener</a></li></ul></div><div><h2>web.xml</h2><ul><li><a href="filter.html">Filter</a></li></ul></div><div><h2>Other</h2><ul><li><a href="systemprops.html">System properties</a></li><li><a href="jaspic.html">JASPIC</a></li></ul></div></nav></div></div><div id="mainRight"><div id="content"><h2>JASPIC</h2><h3 id="Table_of_Contents">Table of Contents</h3><div class="text">
<ul><li><a href="#Introduction">Introduction</a></li><li><a href="#Static_configuration">Static configuration</a><ol><li><a href="#AuthConfigProvider">AuthConfigProvider</a></li><li><a href="#ServerAuthModule">ServerAuthModule</a></li></ol></li><li><a href="#Dynamic_configuration">Dynamic configuration</a></li><li><a href="#3rd_party_modules">3rd party modules</a><ol><li><a href="#Philip_Green_II's_module_for_Google_OAuth_2">Philip Green II's module for Google OAuth 2</a></li></ol></li></ul>
</div><h3 id="Introduction">Introduction</h3><div class="text">
<p>Tomcat implements JASPIC 1.1 Maintenance Release B
(<a href="https://www.jcp.org/en/jsr/detail?id=196">JSR 196</a>). The
implementation is primarily intended to enable the integration of 3rd party
JASPIC authentication implementations with Tomcat.</p>
<p>JASPIC may be configured in one of two ways:</p>
<ul>
<li>At the container level via the static configuration file
<code>$CATALINA_BASE/conf/jaspic-providers.xml</code>. With this
approach all required classes must be visible to Tomcat's Common class
loader which normally means placing a JAR in
<code>$CATALINA_BASE/lib</code>.</li>
<li>At the web application level via dynamic configuration using the JASPIC
API. With this approach all required classes must be visible to the web
application class loader which normally means placing a JAR in the web
application's <code>WEB-INF/lib</code> directory.</li>
</ul>
<p>Users should be aware that if the static JASPIC configuration file
configures JASPIC for a given web application then the JASPIC configuration
will take precedence over any <code><login-config></code> present in
the web application's <code>WEB-INF/web.xml</code> file.</p>
</div><h3 id="Static_configuration">Static configuration</h3><div class="text">
<div class="subsection"><h4 id="AuthConfigProvider">AuthConfigProvider</h4><div class="text">
<p>If the 3rd party implementation includes an
<code>AuthConfigProvider</code> then a web application can be configured to
use it by nesting the following inside the
<code><jaspic-providers></code> element in
<code>$CATALINA_BASE/conf/jaspic-providers.xml</code>.</p>
<div class="codeBox"><pre><code><provider name="any"
className="fully.qualified.implementation.class.Name"
layer="HttpServlet"
appContext="Catalina/localhost /contextPath"
description="any">
<property name="see-provider-documentation"
value="see-provider-documentation" />
</provider></code></pre></div>
<p>The <code>name</code> and <code>description</code> attributes are not
used by Tomcat.</p>
<p>The <code>className</code> attribute must be the fully qualified class
name of the <code>AuthConfigProvider</code>. The implementation may be
packaged with the web application or in Tomcat's
<code>$CATALINA_BASE/lib</code> directory.</p>
<p>The <code>layer</code> attribute must be <code>HttpServlet</code>.</p>
<p>The <code>appContext</code> attribute must be exactly the concatenation
of:</p>
<ul>
<li>The engine name</li>
<li>The forward slash character</li>
<li>The host name</li>
<li>A single space</li>
<li>The context path</li>
</ul>
<p>If the <code>AuthConfigProvider</code> supports configuration via
properties these may be specified via <code><property></code> elements
nesting inside the <code><provide></code> element.</p>
</div></div>
<div class="subsection"><h4 id="ServerAuthModule">ServerAuthModule</h4><div class="text">
<p>If the 3rd party implementation only provides an
<code>ServerAuthModule</code> then it will be necessary to provide a number
of supporting classes. These may be a custom implementation or,
alternatively, Tomcat provides a simple wrapper implementation for
<code>ServerAuthModule</code>s.
</p>
<p>Tomcat's wrapper for <code>ServerAuthModule</code> can be configured
by nesting the following inside the
<code><jaspic-providers></code> element in
<code>$CATALINA_BASE/conf/jaspic-providers.xml</code>.</p>
<div class="codeBox"><pre><code><provider name="any"
className="org.apache.catalina.authenticator.jaspic.SimpleAuthConfigProvider"
layer="HttpServlet"
appContext="Catalina/localhost /contextPath"
description="any">
<property name="org.apache.catalina.authenticator.jaspic.ServerAuthModule.1"
value="fully.qualified.implementation.class.Name" />
<property name="see-provider-documentation"
value="see-provider-documentation" />
</provider></code></pre></div>
<p>The configuration is similar to the <code>AuthConfigProvider</code> in
the previous section but with some key differences.</p>
<p>The <code>className</code> attribute must be
<code>org.apache.catalina.authenticator.jaspic.SimpleAuthConfigProvider</code>.</p>
<p>The <code>ServerAuthModule</code>(s) are specified via properties. The
property name must be
<code>org.apache.catalina.authenticator.jaspic.ServerAuthModule.n</code>
where <code>n</code> is the index of the module. The index must start at 1
an increment in steps of 1 until all modules are defined. The value of the
property must be the fully qualified class name of the module.</p>
</div></div>
</div><h3 id="Dynamic_configuration">Dynamic configuration</h3><div class="text">
<p>JASPIC modules and configuration can be packaged within a WAR file with the
web application. The web application can then register the required JASPIC
configuration when it starts using the standard JASPIC APIs.</p>
<p>If parallel deployment is being used then dynamic configuration should not
be used. The JASPIC API assumes that a context path is unique for any given
host which is not the case when using parallel deployment. When using parallel
deployment, static JASPIC configuration should be used. This will require that
all versions of the application use the same JASPIC configuration.</p>
</div><h3 id="3rd_party_modules">3rd party modules</h3><div class="text">
<p>This is not an exhaustive list. The Tomcat community welcomes contributions
that add to this section.</p>
<div class="subsection"><h4 id="Philip_Green_II's_module_for_Google_OAuth_2">Philip Green II's module for Google OAuth 2</h4><div class="text">
<p>The source code for this module along with the
<a href="https://github.com/phillipgreenii/google-oauth-2.0-serverauthmodule">documentation</a>
which includes details of the necessary Google API configuration is
available on GitHub.</p>
<p>A sample configuration for using this module with Tomcat would look like
this:</p>
<div class="codeBox"><pre><code><jaspic-providers xmlns="https://tomcat.apache.org/xml"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="https://tomcat.apache.org/xml jaspic-providers.xsd"
version="1.0">
<provider name="google-oauth"
className="org.apache.catalina.authenticator.jaspic.SimpleAuthConfigProvider"
layer="HttpServlet"
appContext="Catalina/localhost /contextPath"
description="Google OAuth test">
<property name="org.apache.catalina.authenticator.jaspic.ServerAuthModule.1"
value="com.idmworks.security.google.GoogleOAuthServerAuthModule" />
<property name="oauth.clientid"
value="obtained-from-Google-console" />
<property name="oauth.clientsecret"
value="obtained-from-Google-console" />
<property name="ignore_missing_login_context"
value="true" />
</provider>
</jaspic-providers></code></pre></div>
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