Using LDAP and JDBC Simultaneously

Overview

Is it possible to authenticate via LDAP then fetch roles from a relational database? Yes! To accomplish this, make the following changes.

Steps

1. Install the attached JAR file in the same directory as acegi-security-1.x.x.jar (e.g. pentaho.war/WEB-INF/lib). (This JAR contains a single class, detailed in SEC-456.)
2. Edit web.xml to use a combination of LDAP and JDBC configuration files.
   web.xml

   <context-param>
     <param-name>contextConfigLocation</param-name>
     <param-value>
       /WEB-INF/applicationContext-acegi-security.xml 
       /WEB-INF/applicationContext-common-authorization.xml 
       /WEB-INF/applicationContext-acegi-security-ldap.xml
       /WEB-INF/applicationContext-pentaho-security-jdbc.xml
     </param-value>
   </context-param>
   

3. Open applicationContext-acegi-security-ldap.xml. Replace the populator bean definition with the one below. (This is the bean in the downloaded JAR.)
   applicationContext-acegi-security-ldap.xml

   <bean id="populator" class="org.acegisecurity.providers.ldap.populator.DaoLdapAuthoritiesPopulator">
     <property name="userDetailsService" ref="userDetailsService" />
     <property name="usernameAttribute" value="cn" />
   </bean>
   

4. Staying in the same file, remove the userDetailsService bean. (We're removing it to replace it later with the JDBC-based UserDetailsService implementation: JdbcDaoImpl.)
   applicationContext-acegi-security-ldap.xml

   <!-- removed userDetailsService bean -->
   

5. Open applicationContext-pentaho-security-jdbc.xml. Add the following two bean definitions. Both of these bean definitions were copied from applicationContext-acegi-security-jdbc.xml. (One is the JDBC-based UserDetailsService implementation; the other is a bean required by that implementation.)
   applicationContext-pentaho-security-jdbc.xml

   <bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource">
     <property name="driverClassName" value="org.hsqldb.jdbcDriver" />
     <property name="url" value="jdbc:hsqldb:hsql://localhost:9002/userdb" />
     <property name="username" value="sa" />
     <property name="password" value="" />
   </bean>
   
   <bean id="userDetailsService" class="org.acegisecurity.userdetails.jdbc.JdbcDaoImpl">
     <property name="dataSource">
       <ref local="dataSource" />
     </property>
     <property name="authoritiesByUsernameQuery">
       <value>
         <![CDATA[SELECT username, authority FROM granted_authorities WHERE username = ?]]>
       </value>
     </property>
     <property name="usersByUsernameQuery">
       <value>
         <![CDATA[SELECT username, password, enabled FROM users WHERE username = ?]]>
       </value>
     </property>
   </bean>
   

References

See SEC-456.