private String validateCredentials(String userid, String password) { if (userid == null) { return "No userid was specified."; } if (password == null) { return "No password was specified."; } String loggedOnUserID = sb.getUserid(); if (loggedOnUserID != null) { if (!loggedOnUserID.equals(userid)) { return "User '" + loggedOnUserID + "' is already logged on in this" + " browser instance (in another tab or window)." + " Only one user logon per browser " + " instance is possible. If you wish to view you work" + " queued items via your iGoogle Gadget, please " + " logout the currently logged on user first."; } else sb.setRssAlreadyLoggedOn(true); } else { if (rm == null) { return "Could not connect to work queue, service unavailable."; } Participant p = rm.getParticipantFromUserID(userid); if (p == null) { return "Unknown userid: " + userid; } if (!p.getPassword().equals(password)) { return "Incorrect password."; } if (!rm.hasOrgDataSource()) { msgPanel.error( "Missing or invalid organisational data source. The resource" + " service requires a connection to a valid data source" + " that contains organisational data. Please check the" + " settings of the 'OrgDataSource' parameter in the service's" + " web.xml to ensure a valid data source is set, and/or check" + " the configuration properties set for the data source."); } String handle = rm.login(userid, password, sb.getExternalSessionID()); if (!rm.successful(handle)) { return (msgPanel.format(handle)); } initSession(p, userid, handle); } return success; // successful login }