Guest and LDAP progress

git-svn-id: https://svn.alfresco.com/repos/alfresco-enterprise/alfresco/HEAD/root@2127 c4b6b30b-aa2e-2d43-bbcb-ca4b014f7261

source/java/org/alfresco/service/cmr/security/AuthenticationService.java

@@ -90,6 +90,13 @@ public interface AuthenticationService
      */
     public void authenticate(String userName, char[] password) throws AuthenticationException;
     
+    /**
+     * Authenticate as the guest user. This may not be allowed and throw an exception.
+     * 
+     * @throws AuthenticationException
+     */
+    public void authenticateAsGuest() throws AuthenticationException;
+    
     /**
      * Get the name of the currently authenticated user.
      *