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Summary

This page will explain how to make a jboss container provide CAS authentication at a container level. This client uses a Catalina Valve which makes some intelligent decisions based on the cas context config. The CAS Context is the configuration of the CAS client for the container. This context is used for both the Valve on the front end, as well as the JAAS login modules on the authentication actions made by the container.

1. Download jars...

Please check for the current version...

cd ${jboss.home}/server/${server}/lib
curl http://repo2.maven.org/maven2/org/jasig/cas/cas-client-core/3.1.10/cas-client-core-3.1.10.jar > cas-client-core-3.1.10.jar
curl http://repository.its.yale.edu/maven2/repo/org/jasig/cas/cas-client-jboss/1.0.3/cas-client-jboss-1.0.3.jar > cas-client-jboss-1.0.3.jar

2. Configure CAS Authenticator

JBoss 5 - ${jboss.home}/server/${server}/deployers/jbossweb.deployer/META-INF/war-deployers-jboss-beans.xml
diff -cBr war-deployers-jboss-beans.xml.orig war-deployers-jboss-beans.xml
*** war-deployers-jboss-beans.xml.orig	2011-04-14 13:25:59.178715004 -0400
--- war-deployers-jboss-beans.xml	2011-04-14 13:25:59.178715004 -0400
***************
*** 172,177 ****
--- 172,181 ----
                 <value>org.apache.catalina.authenticator.FormAuthenticator</value>
              </entry>
              <entry>
+                <key>CAS</key>
+                <value>org.jasig.cas.client.jboss.CasAuthenticator</value>
+             </entry>
+             <entry>
                 <key>NONE</key>
                 <value>org.apache.catalina.authenticator.NonLoginAuthenticator</value>
              </entry>
JBoss 4.2.3 - ${jboss.home}/server/${server}/deploy/jboss-web.deployer/META-INF/jboss-service.xml
diff -cBr jboss-service.xml.orig jboss-service.xml
*** jboss-service.xml.orig	2011-05-16 14:55:41.000000000 -0400
--- jboss-service.xml	2011-05-16 14:56:21.000000000 -0400
***************
*** 33,38 ****
--- 33,42 ----
                 <java:value>org.apache.catalina.authenticator.FormAuthenticator</java:value>
              </java:property> 
              <java:property>
+                <java:key>CAS</java:key>
+                <java:value>org.jasig.cas.client.jboss.CasAuthenticator</java:value>
+             </java:property> 
+             <java:property>
                 <java:key>NONE</java:key>
                 <java:value>org.apache.catalina.authenticator.NonLoginAuthenticator</java:value>
              </java:property>

3.Modify web.xml

Example: WEB-INF/web.xml

...

  <security-role>
    <role-name>app-user</role-name>
  </security-role>

  <security-constraint>
    <web-resource-collection>
      <web-resource-name>My App</web-resource-name>
      <url-pattern>/</url-pattern>
    </web-resource-collection>
    <auth-constraint>
      <role-name>app-user</role-name>
    </auth-constraint>
  </security-constraint>

  <login-config>
    <auth-method>CAS</auth-method>
    <realm-name>MyAppRealm</realm-name>
  </login-config>

...

4. Update login-config.xml

${jboss.home}/server/${server}/conf/login-config.xml

...

  <application-policy name="MyAppRealm">
    <authentication>
      <login-module code="org.jasig.cas.client.jboss.jaas.CasAuthenticatorLoginModule" flag="required">
         <module-option name="default-role">app-user</module-option>
      </login-module>
    </authentication>
  </application-policy>

...

4. Add cas-config-service.xml

${jboss.home}/server/${server}/deploy/cas-config-service.xml
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE server PUBLIC "-//JBoss//DTD MBean Service 4.0//EN"
          "http://www.jboss.org/j2ee/dtd/jboss-service_4_0.dtd">
<server>

   <mbean code="org.jboss.naming.JNDIBindingServiceMgr"
         name="org.jasig:service=CasConfig">

      <attribute name="BindingsConfig" serialDataType="jbxb">

         <jndi:bindings
            xmlns:xs="http://www.w3.org/2001/XMLSchema-instance"
            xmlns:jndi="urn:jboss:jndi-binding-service:1.0"
            xs:schemaLocation="urn:jboss:jndi-binding-service:1.0 resource:jndi-binding-service_1_0.xsd">

            <jndi:binding name="jasig/cas/config">
               <java:properties xmlns:java="urn:jboss:java-properties"
                  xmlns:xs="http://www.w3.org/2001/XMLSchema-instance"
                  xs:schemaLocation="urn:jboss:java-properties resource:java-properties_1_0.xsd">

                  <!-- Properties -->
                  <java:property>
                     <java:key>loginUrl</java:key>
                     <java:value>https://secure.its.yale.edu/cas/login</java:value>
                  </java:property>
                  <java:property>
                     <java:key>casServerUrl</java:key>
                     <java:value>https://secure.its.yale.edu/cas</java:value>
                  </java:property>

               </java:properties>
            </jndi:binding>

         </jndi:bindings>
      </attribute>
      <depends>jboss:service=Naming</depends>
   </mbean>

   <mbean code="org.jasig.cas.client.jboss.mbeans.CasContextConfig"
          name="org.jasig:service=CasContextMBean">
      <depends>jboss:service=Naming</depends>
      <depends>org.jasig:service=CasConfig</depends>
   </mbean>

</server>
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