@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;
}
@Override
public Attachment renameAttachment(Long userId, long attachmentId, String name) {
if (log.isDebugEnabled()) {
log.debug(">> renameAttachment() : userId =" + userId + ", attachmentId=" + attachmentId);
}
if (userId == null) {
if (log.isTraceEnabled()) {
log.trace("<< renameAttachment() : null // operation is not permitted");
}
return null;
}
User u = em.find(User.class, userId);
if (u == null) {
if (log.isTraceEnabled()) {
log.trace("<< renameAttachment() : null // no such user! operation is not permitted");
}
return null;
}
Attachment att = em.find(Attachment.class, attachmentId);
if (att == null) {
if (log.isTraceEnabled()) {
log.trace("<< renameAttachment() : null // invalid attachmentId=" + attachmentId);
}
return null;
}
if (!isOwner(u, att) && u.getUserGroup() != User.ADMIN) {
if (log.isTraceEnabled()) {
log.trace("<< renameAttachment() : null // operation is not permitted");
}
return null;
}
att.setName(name);
if (log.isDebugEnabled()) {
log.debug(">> renameAttachment() : userId =" + userId + ", attachmentId=" + attachmentId);
}
return em.merge(att);
}
/** 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;
}