12.3. EJB Application Security

12.3.1. Security Identity

12.3.1.1. About EJB Security Identity

The security identity, which is also known as invocation identity, refers to the <security-identity> tag in the security configuration. It refers to the identity another EJB must use when it invokes methods on components.
The invocation identity can be either the current caller, or it can be a specific role. In the first case, the <use-caller-identity> tag is present, and in the second case, the <run-as> tag is used.
For information about setting the security identity of an EJB, refer to Section 12.3.1.2, “Set the Security Identity of an EJB”.

12.3.1.2. Set the Security Identity of an EJB

Example 12.3. Set the security identity of an EJB to be the same as its caller

This example sets the security identity for method invocations made by an EJB to be the same as the current caller's identity. This behavior is the default if you do not specify a <security-identity> element declaration.
<ejb-jar>
  <enterprise-beans>
	 <session>
		<ejb-name>ASessionBean</ejb-name>
		<!-- ... -->
		<security-identity>
		  <use-caller-identity/>
		</security-identity>
	 </session>
	 <!-- ... -->
  </enterprise-beans>
</ejb-jar>

Example 12.4. Set the security identity of an EJB to a specific role

To set the security identity to a specific role, use the <run-as> and <role-name> tags inside the <security-identity> tag.
<ejb-jar>
  <enterprise-beans>
	 <session>
		<ejb-name>RunAsBean</ejb-name>
		<!-- ... -->
		<security-identity>
		  <run-as>
			 <description>A private internal role</description>
			 <role-name>InternalRole</role-name>
		  </run-as>
		</security-identity>
	 </session>
  </enterprise-beans>
  <!-- ... -->
</ejb-jar>
By default, when you use <run-as>, a principal named anonymous is assigned to outgoing calls. To assign a different principal, uses the <run-as-principal>.
<session>
    <ejb-name>RunAsBean</ejb-name>
    <security-identity>
        <run-as-principal>internal</run-as-principal>
    </security-identity>
</session>

Note

You can also use the <run-as> and <run-as-principal> elements inside a servlet element.