@Override
public Attachment shareFile(Long attachmentId, long who, Long with) {
if (log.isTraceEnabled()) {
log.trace(">> shareFile(): attachmentId=" + attachmentId + ", who=" + who + ", with=" + with);
}
Attachment att = em.find(Attachment.class, attachmentId);
if (att == null) {
if (log.isTraceEnabled()) {
log.trace("<< shareFile(): null - no such attachment");
}
return null;
}
boolean canShare = false;
try {
// canShare |= um.isAdmin(who);
User actor = em.find(User.class, who);
if (actor != null && actor.getUserGroup() == 1) {
canShare = true;
}
} catch (Exception ex) {
}
if (!canShare) {
for (User u : att.getUser()) {
if (u.getId() == who) {
canShare = true;
break;
}
}
}
if (!canShare) {
if (log.isTraceEnabled()) {
log.trace("<< shareFile(): null - operation is not permitted");
}
return null;
}
User w = em.find(User.class, with);
if (w == null) {
if (log.isTraceEnabled()) {
log.trace("<< shareFile(): cannot share with nobody, and owners list was not modified");
}
return att;
}
att.getUser().add(w);
em.persist(att);
return att;
}
@javax.ejb.TransactionAttribute(javax.ejb.TransactionAttributeType.SUPPORTS)
private boolean isOwner(User u, Attachment a) {
for (User usr : a.getUser()) {
if (usr.getId().equals(u.getId())) {
if (log.isTraceEnabled()) {
log.trace("<< isOwner(): true // owner of the file");
}
return true;
}
}
if (log.isTraceEnabled()) {
log.trace("<< isOwner(): false");
}
return false;
}
@Override
public Attachment reuploadFiles(
User user, Long attachmentId, List<ReshakaUploadedFile> files, String tags) {
if (attachmentId == null) {
return uploadFiles(user, files, tags);
}
if (!checkUploadRights(user)) {
return null;
}
Attachment original = em.find(Attachment.class, attachmentId);
if (original == null) {
return null;
}
Set<User> u = original.getUser();
removeAttachmentFromDisk(original);
original = prepareAttachment(user, files, tags);
original.setId(attachmentId);
original.setUser(u);
return em.merge(original);
}
/** Checks if user has the right to download specified attachment */
@javax.ejb.TransactionAttribute(javax.ejb.TransactionAttributeType.SUPPORTS)
private boolean checkDownloadRights(User u, Attachment a) {
if (log.isTraceEnabled()) {
log.trace(">> checkDownloadRights(): user="******"SELECT u FROM User u WHERE u.avatarId = :avatarId", User.class);
q.setParameter("avatarId", a.getId());
List<User> lst = q.getResultList();
if (lst != null && !lst.isEmpty()) {
if (log.isTraceEnabled()) {
log.trace("<< checkDownloadRights(): true // this is an avatar");
}
return true;
}
if (a == null) {
if (log.isTraceEnabled()) {
log.trace("<< checkDownloadRights(): false // attachment = null");
}
return false;
}
// do check if it is a problem statement
q = em.createQuery("SELECT o FROM Order o WHERE o.conditionId = :conditionId", Order.class);
q.setParameter("conditionId", a.getId());
lst = q.getResultList();
if (lst != null && !lst.isEmpty()) {
if (log.isTraceEnabled()) {
log.trace("<< checkDownloadRights(): true // this is a problem statement");
}
return true;
}
// do check if it is a solution to closed order
q =
em.createQuery(
"SELECT o FROM Order o WHERE o.solutionId = :solutionId and o.status in :statuses",
Order.class);
q.setParameter("solutionId", a.getId());
q.setParameter(
"statuses",
new ArrayList() {
{
add(Order.CLOSED_OFFLINE_ORDER_STATUS);
add(Order.FULL_PAYED_OFFLINE_ORDER_STATUS);
add(Order.EXPIRED_OFFLINE_ORDER_STATUS);
add(Order.EXPIRED_ONLINE_ORDER_STATUS);
}
});
lst = q.getResultList();
if (lst != null && !lst.isEmpty()) {
if (log.isTraceEnabled()) {
log.trace("<< checkDownloadRights(): true // this is a problem statement");
}
return true;
}
if (u == null) {
// guest tries to download file (not condition or avatar)
if (log.isTraceEnabled()) {
log.trace("<< checkDownloadRights(): false // user = null");
}
return false;
}
// Admin ?
if (u.getUserGroup() == 1) {
return true;
}
try {
// check whether the requestor is owner of the file
if (log.isTraceEnabled()) {
log.trace("checkDownloadRights(): file owners >> " + a.getUser().size());
}
if (isOwner(u, a)) return true;
} catch (Exception ex) {
if (log.isTraceEnabled()) {
log.trace("checkDownloadRights(): false // exception while processing owners list", ex);
}
return false;
}
// we might as well return false...
if (log.isTraceEnabled()) {
log.trace("<< checkDownloadRigths(): false");
}
return false;
}
