UserBean.java
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package fi.insomnia.bortal.beans;
import java.security.Principal;
import java.util.ArrayList;
import java.util.HashSet;
import java.util.List;
import java.util.Set;
import javax.annotation.Resource;
import javax.ejb.EJB;
import javax.ejb.LocalBean;
import javax.ejb.SessionContext;
import javax.ejb.Stateless;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import fi.insomnia.bortal.enums.Permission;
import fi.insomnia.bortal.enums.RolePermission;
import fi.insomnia.bortal.exceptions.EjbPermissionDeniedException;
import fi.insomnia.bortal.facade.RoleFacade;
import fi.insomnia.bortal.facade.UserFacade;
import fi.insomnia.bortal.model.AccessRight;
import fi.insomnia.bortal.model.LanEvent;
import fi.insomnia.bortal.model.Role;
import fi.insomnia.bortal.model.RoleRight;
import fi.insomnia.bortal.model.User;
/**
* Session Bean implementation class UserBean
*/
@LocalBean
@Stateless
public class UserBean implements UserBeanLocal {
private static final Logger logger = LoggerFactory.getLogger(UserBean.class);
/**
* Java EE container injektoi tämän luokkamuuttujan luokan luonnin
* yhteydessä.
*/
@EJB
private UserFacade userFacade;
@Resource
private SessionContext context;
@EJB
private RoleFacade roleFacade;
@EJB
private AccessRightBeanLocal accessRightBeanLocal;
@EJB
private SecurityBeanLocal secubean;
@EJB
private EventBeanLocal eventBean;
/**
* Default constructor.
*/
public UserBean() {
// TODO Auto-generated constructor stub
}
@Override
public User createNewUser(String login, String password) {
User returnUser = new User();
returnUser.setLogin(login);
returnUser.resetPassword(password);
// Tallennetaan olio kantaan...
userFacade.create(returnUser);
return returnUser;
}
public List<User> getUsers() throws EjbPermissionDeniedException {
User curruser = getCurrentUser();
if (curruser == null || !hasPermission(Permission.USER_MANAGEMENT, curruser, RolePermission.READ)) {
throw new EjbPermissionDeniedException(secubean, curruser, "User tried to execute getUsers function with insufficient permissions");
}
List<User> ret = userFacade.findAll();
logger.info("Found {} users from database ", ret.size());
return ret;
}
@Override
public User mergeChanges(User user) throws EjbPermissionDeniedException {
User curruser = getCurrentUser();
if (curruser == null || !hasPermission(Permission.USER_MANAGEMENT, curruser, RolePermission.WRITE) || !user.equals(curruser)) {
throw new EjbPermissionDeniedException(secubean, curruser, "User tried to merge someone others data with insufficient permissions");
}
return userFacade.merge(user);
}
public User getUser(String nick) {
return userFacade.findByLogin(nick);
}
public boolean isCurrentUser(User user) {
return (context.getCallerPrincipal() == null || user == null) ? false : context.getCallerPrincipal().getName().equals(user.getNick());
}
@Override
public User getCurrentUser() {
Principal principal = context.getCallerPrincipal();
User ret = userFacade.findByLogin(principal.getName());
if (ret == null) {
ret = getDefaultUser();
}
return ret;
}
/**
* Makes sure default user and public role exist and the user is member of
* the role.
*/
public User getDefaultUser() {
Role publicRole = roleFacade.getOrCreatePublicRole(eventBean.getCurrentEvent());
User defaultUser = userFacade.getOrCreateDefaultUser();
if (!defaultUser.getRoles().contains(publicRole)) {
ArrayList<Role> userRoles = new ArrayList<Role>();
userRoles.add(publicRole);
defaultUser.setRoles(userRoles);
}
return defaultUser;
}
public boolean hasPermission(Permission target, User user, RolePermission permission) {
if (user == null) {
return false;
}
// TODO: FIX THIS!! really bad idea....
if (user.isSuperadmin()) {
logger.debug("Returning true for superadmin for {} perm {}", target.name(), permission);
return true;
}
AccessRight expectedRight = accessRightBeanLocal.findOrCreate(target);
User dbusr = userFacade.find(user.getId());
if (dbusr != null) {
Set<Role> checkedRoles = new HashSet<Role>();
for (Role r : dbusr.getRoles()) {
if (getRights(r, expectedRight, permission, checkedRoles)) {
return true;
}
}
}
return false;
}
private static boolean getRights(Role role, AccessRight expectedRight, RolePermission permission, Set<Role> checkedRoles) {
if (checkedRoles.contains(role)) {
return false;
}
for (RoleRight rr : role.getRoleRights()) {
if (rr.getAccessRight().equals(expectedRight)) {
switch (permission) {
case READ:
if (rr.isRead()) {
return true;
}
break;
case WRITE:
if (rr.isWrite()) {
return true;
}
break;
case EXECUTE:
if (rr.isExecute()) {
return true;
}
}
}
}
checkedRoles.add(role);
for (Role r : role.getParents()) {
if (getRights(r, expectedRight, permission, checkedRoles)) {
return true;
}
}
return false;
}
}