@Override
public UserData login(String login, String password)
throws InvalidCredentialsException, IllegalArgumentException, ServerError {
if (!FieldVerifier.isValidLogin(login)) throw new IllegalArgumentException("Invalid login");
if (!FieldVerifier.isValidPassword(login)) throw new IllegalArgumentException("Invalid login");
boolean newUser = false;
User user = null;
try {
user = userDao.authenticateUser(login, password);
} catch (DBException e1) {
throw new ServerError("Error while accessing DB");
}
if (user == null) {
newUser = true;
try {
user = userDao.createUser(login, password);
} catch (DBException dbe) {
throw new ServerError();
} catch (ExistingUserException e) {
// race-condition: user with the same login was created in between
throw new InvalidCredentialsException();
}
}
HttpSession session = this.getThreadLocalRequest().getSession(true);
session.setAttribute("user", user);
logger.info(
String.format("User %s has logged in session %s.", user.getLogin(), session.getId()));
try {
return new UserData(user, itemDao.getAllItems(), newUser);
} catch (DBException e) {
throw new ServerError();
}
}
/** The server side implementation of the RPC service. */
@SuppressWarnings("serial")
public class UserServiceImpl extends RemoteServiceServlet implements UserService {
static Logger logger = Logger.getLogger(UserServiceImpl.class);
private UserDAO userDao = UserDAO.getInstance();
private ItemDAO itemDao = ItemDAO.getInstance();
@Override
public UserData checkLoggedIn() throws ServerError {
HttpSession session = this.getThreadLocalRequest().getSession(false);
if (session == null) return null;
User user = (User) session.getAttribute("user");
try {
return new UserData(user, itemDao.getAllItems(), false);
} catch (DBException e) {
throw new ServerError();
}
}
@Override
public UserData login(String login, String password)
throws InvalidCredentialsException, IllegalArgumentException, ServerError {
if (!FieldVerifier.isValidLogin(login)) throw new IllegalArgumentException("Invalid login");
if (!FieldVerifier.isValidPassword(login)) throw new IllegalArgumentException("Invalid login");
boolean newUser = false;
User user = null;
try {
user = userDao.authenticateUser(login, password);
} catch (DBException e1) {
throw new ServerError("Error while accessing DB");
}
if (user == null) {
newUser = true;
try {
user = userDao.createUser(login, password);
} catch (DBException dbe) {
throw new ServerError();
} catch (ExistingUserException e) {
// race-condition: user with the same login was created in between
throw new InvalidCredentialsException();
}
}
HttpSession session = this.getThreadLocalRequest().getSession(true);
session.setAttribute("user", user);
logger.info(
String.format("User %s has logged in session %s.", user.getLogin(), session.getId()));
try {
return new UserData(user, itemDao.getAllItems(), newUser);
} catch (DBException e) {
throw new ServerError();
}
}
@Override
public void logout(String login) throws InvalidCredentialsException {
ServerUtils.authenticate(this.getThreadLocalRequest(), login);
HttpServletRequest request = this.getThreadLocalRequest();
HttpSession session = request.getSession(false);
logger.info(String.format("User %s has logged out from session %s.", login, session.getId()));
session.invalidate();
}
}