Class JaasAuthenticationProvider

  • All Implemented Interfaces:
    java.util.EventListener, org.springframework.beans.factory.Aware, org.springframework.beans.factory.InitializingBean, org.springframework.context.ApplicationEventPublisherAware, org.springframework.context.ApplicationListener<SessionDestroyedEvent>, AuthenticationProvider

    public class JaasAuthenticationProvider
    extends AbstractJaasAuthenticationProvider
    An AuthenticationProvider implementation that retrieves user details from a JAAS login configuration.

    This AuthenticationProvider is capable of validating UsernamePasswordAuthenticationToken requests contain the correct username and password.

    This implementation is backed by a JAAS configuration. The loginConfig property must be set to a given JAAS configuration file. This setter accepts a Spring Resource instance. It should point to a JAAS configuration file containing an index matching the loginContextName property.

    For example: If this JaasAuthenticationProvider were configured in a Spring WebApplicationContext the xml to set the loginConfiguration could be as follows...

     <property name="loginConfig">

    The loginContextName should coincide with a given index in the loginConfig specifed. The loginConfig file used in the JUnit tests appears as the following...

     JAASTest { required;
    Using the example login configuration above, the loginContextName property would be set as JAASTest...
      <property name="loginContextName"> <value>JAASTest</value> </property>

    When using JAAS login modules as the authentication source, sometimes the LoginContext will require CallbackHandlers. The JaasAuthenticationProvider uses an internal CallbackHandler to wrap the JaasAuthenticationCallbackHandlers configured in the ApplicationContext. When the LoginContext calls the internal CallbackHandler, control is passed to each JaasAuthenticationCallbackHandler for each Callback passed.

    JaasAuthenticationCallbackHandlers are passed to the JaasAuthenticationProvider through the callbackHandlers property.

     <property name="callbackHandlers">
         <bean class=""/>
         <bean class=""/>
         <bean class=""/>

    After calling LoginContext.login(), the JaasAuthenticationProvider will retrieve the returned Principals from the Subject (LoginContext.getSubject().getPrincipals). Each returned principal is then passed to the configured AuthorityGranters. An AuthorityGranter is a mapping between a returned Principal, and a role name. If an AuthorityGranter wishes to grant an Authorization a role, it returns that role name from it's AuthorityGranter.grant( method. The returned role will be applied to the Authorization object as a GrantedAuthority.

    AuthorityGranters are configured in spring xml as follows...

     <property name="authorityGranters">
         <bean class=""/>
    A configuration note: The JaasAuthenticationProvider uses the security properties "login.config.url.X" to configure jaas. If you would like to customize the way Jaas gets configured, create a subclass of this and override the configureJaas(Resource) method.
    • Field Detail

      • log

        protected static final org.apache.commons.logging.Log log
    • Constructor Detail

      • JaasAuthenticationProvider

        public JaasAuthenticationProvider()
    • Method Detail

      • createLoginContext

        protected createLoginContext​( handler)
        Description copied from class: AbstractJaasAuthenticationProvider
        Creates the LoginContext to be used for authentication.
        Specified by:
        createLoginContext in class AbstractJaasAuthenticationProvider
        handler - The CallbackHandler that should be used for the LoginContext (never null).
        the LoginContext to use for authentication.
      • configureJaas

        protected void configureJaas​( loginConfig)
        Hook method for configuring Jaas.
        loginConfig - URL to Jaas login configuration
        Throws: - if there is a problem reading the config resource.
      • getLoginConfig

        public getLoginConfig()
      • setLoginConfig

        public void setLoginConfig​( loginConfig)
        Set the JAAS login configuration file.
        loginConfig -
        See Also:
        JAAS Reference
      • setRefreshConfigurationOnStartup

        public void setRefreshConfigurationOnStartup​(boolean refresh)
        If set, a call to Configuration#refresh() will be made by #configureJaas(Resource) method. Defaults to true.
        refresh - set to false to disable reloading of the configuration. May be useful in some environments.
        See Also: