= JAAS and TomEE
:index-group: Unrevised
:jbake-date: 2018-12-05
:jbake-type: page
:jbake-status: published


== Purpose

You want to use JAAS in TomEE with custom (or OpenEJB) LoginModules.

== Solution

TomEE tries to keep as possible as it is Tomcat so simply configure your
JAAS LoginModule as in Tomcat.

Note: only the first one will be used.

== Configuration

Add to your `CATALINA_OPTS` the `java.security.auth.login.config` system
property:

[source,properties]
----
-Djava.security.auth.login.config=$CATALINA_BASE/conf/login.config
----

Configure your realm in server.xml file

[source,xml]
----
<?xml version='1.0' encoding='utf-8'?>
<Server port="8005" shutdown="SHUTDOWN">
  <Listener className="org.apache.tomee.loader.OpenEJBListener" />
  <Listener className="org.apache.catalina.security.SecurityListener" />

  <Service name="Catalina">
    <Connector port="8080" protocol="HTTP/1.1" 
               connectionTimeout="20000" 
               redirectPort="8443" />
    <Connector port="8009" protocol="AJP/1.3" redirectPort="8443" />
    <Engine name="Catalina" defaultHost="localhost">
      <!-- here is the magic -->
      <Realm className="org.apache.catalina.realm.JAASRealm" appName="PropertiesLogin"
             userClassNames="org.apache.openejb.core.security.jaas.UserPrincipal"
             roleClassNames="org.apache.openejb.core.security.jaas.GroupPrincipal">
      </Realm>

      <Host name="localhost"  appBase="webapps"
            unpackWARs="true" autoDeploy="true" />
    </Engine>
  </Service>
</Server>
----

Configure your `login.config` file

[source,java]
----
PropertiesLogin {
    org.apache.openejb.core.security.jaas.PropertiesLoginModule required
    Debug=false
    UsersFile="users.properties"
    GroupsFile="groups.properties";
};
----

Configure your login module specifically (`users.properties` for
snippets of this page for instance).

Place `users.properties` and `groups.properties` files in
`$CATALINA_BASE/conf/` folder. `users.properties` file contains
username and associated password entries, ex.:

[source,properties]
----
me=password
tomee=tomee
----

`groups.properties` file specifies groups and their users, ex.:

[source,properties]
----
my-role=me
manager-gui=tomee,me
tomee-admin=tomee
----

*NOTE*: `users.properties` and `groups.properties` file names and file
location are fixed. If other names are used, the files must be placed in
`%CATALINA_BASE/lib/` folder instead.
