Note: There are related HOWTOs: Changing to the LDAP Security DAO and Changing to the JDBC Security DAO.

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 PentahoDoc: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 pentaho-spring-beans.xml to use a combination of LDAP and JDBC configuration files. 
    <beans>
  <!-- some lines omitted -->
  <import resource="applicationContext-acegi-security.xml" />
  <import resource="applicationContext-common-authorization.xml" />
  <import resource="applicationContext-acegi-security-ldap.xml" />
  <import resource="applicationContext-pentaho-security-jdbc.xml" />
</beans>
  3. Open applicationContext-acegi-security-ldap.xml. Replace the populator bean definition with the one below. (This is the bean in the downloaded JAR.) 
    <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.) 
    <!-- 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.) 
    <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.