Access system information before logging on

Question

On the logon screen we added a link to a third party application (for to change the password).
Depending on the portal (development, consolidation, productive) it should be on each machine
another link, because this third party application runs also on three different servers
(development, consolidation, productive).
The idea was now to take the system information from the system landscape of each portal.
ISystemLandscapeService service =
(SystemLandscapeService)
   PortalRuntime.
    getRuntimeResources().
     getService(ISystemLandscapeService.KEY);
IDesigntimeSystemLandscapeService desTimeSLService =
service.getIDesigntimeSystemLandscapeService();
try {
     IUser user = (IUser) componentRequest.getUser();
     ISystemObject so = (ISystemObject) desTimeSLService.getObjectRunTime("PW_CHANGE", user);
     Attribute server = so.getAttribute("server");
     Attribute protocol = so.getAttribute("protocol");
     String pass_change_url = protocol.get().toString()+"://"+server.get().toString()+"/ChangePassword/start.jsp";
catch (NamingException e){
My problem is, that the current user is not logged on at this moment.
Therefore user is null and I can't get the ISystemObject.
Does someone has an idea how to solve this?
Thanks and regards,
Marcus

Answer 1

Hi Marcus,
<i>maybe</i> you can use the pcd_service user for this, sorry, at the moment I don't have the time to check if it is nonsense... This would be done as follows:
IUser serviceUser = null;
try {
  serviceUser =  (IUser)AccessController.doPrivileged(new PrivilegedExceptionAction(){
    public Object run() throws Exception {
      IUserManagementEngine umService = (IUserManagementEngine) PortalRuntime.getRuntimeResources().getService
          ("com.sap.portal.usermanagement.user_management_engine");
      IServiceUserFactory serviceUserFactory = umService.getServiceUserFactory();
      return serviceUserFactory.getServiceUser(PCD_USER);
} catch (Exception e) {
  e.printStackTrace();
Hope it helps
Detlev