Exemplo n.º 1
0
  /**
   * The packet is a typical 'set' or 'get' update targeted at the server. Notice that the set could
   * be a roster removal in which case we have to generate a local roster removal update as well as
   * a new roster removal to send to the the roster item's owner.
   *
   * @param packet The packet that triggered this update
   * @return Either a response to the roster update or null if the packet is corrupt and the session
   *     was closed down
   */
  private IQ manageRoster(org.xmpp.packet.Roster packet)
      throws UnauthorizedException, UserAlreadyExistsException, SharedGroupException {

    IQ returnPacket = null;
    JID sender = packet.getFrom();
    IQ.Type type = packet.getType();

    try {
      if ((sender.getNode() == null
              || !RosterManager.isRosterServiceEnabled()
              || !userManager.isRegisteredUser(sender.getNode()))
          && IQ.Type.get == type) {
        // If anonymous user asks for his roster or roster service is disabled then
        // return an empty roster
        IQ reply = IQ.createResultIQ(packet);
        reply.setChildElement("query", "jabber:iq:roster");
        return reply;
      }
      if (!localServer.isLocal(sender)) {
        // Sender belongs to a remote server so discard this IQ request
        Log.warn("Discarding IQ roster packet of remote user: " + packet);
        return null;
      }

      Roster cachedRoster = userManager.getUser(sender.getNode()).getRoster();
      if (IQ.Type.get == type) {
        returnPacket = cachedRoster.getReset();
        returnPacket.setType(IQ.Type.result);
        returnPacket.setTo(sender);
        returnPacket.setID(packet.getID());
        // Force delivery of the response because we need to trigger
        // a presence probe from all contacts
        deliverer.deliver(returnPacket);
        returnPacket = null;
      } else if (IQ.Type.set == type) {

        for (org.xmpp.packet.Roster.Item item : packet.getItems()) {
          if (item.getSubscription() == org.xmpp.packet.Roster.Subscription.remove) {
            removeItem(cachedRoster, packet.getFrom(), item);
          } else {
            if (cachedRoster.isRosterItem(item.getJID())) {
              // existing item
              RosterItem cachedItem = cachedRoster.getRosterItem(item.getJID());
              cachedItem.setAsCopyOf(item);
              cachedRoster.updateRosterItem(cachedItem);
            } else {
              // new item
              cachedRoster.createRosterItem(item);
            }
          }
        }
        returnPacket = IQ.createResultIQ(packet);
      }
    } catch (UserNotFoundException e) {
      throw new UnauthorizedException(e);
    }

    return returnPacket;
  }
Exemplo n.º 2
0
  /**
   * Remove a roster item. At this stage, this is recipient who has received a roster update. We
   * must check that it is a removal, and if so, remove the roster item based on the sender's id
   * rather than what is in the item listing itself.
   *
   * @param packet The packet suspected of containing a roster removal
   */
  private void removeRosterItem(org.xmpp.packet.Roster packet)
      throws UnauthorizedException, SharedGroupException {
    JID recipientJID = packet.getTo();
    JID senderJID = packet.getFrom();
    try {
      for (org.xmpp.packet.Roster.Item packetItem : packet.getItems()) {
        if (packetItem.getSubscription() == org.xmpp.packet.Roster.Subscription.remove) {
          Roster roster = userManager.getUser(recipientJID.getNode()).getRoster();
          RosterItem item = roster.getRosterItem(senderJID);
          roster.deleteRosterItem(senderJID, true);
          item.setSubStatus(RosterItem.SUB_REMOVE);
          item.setSubStatus(RosterItem.SUB_NONE);

          Packet itemPacket = packet.createCopy();
          sessionManager.userBroadcast(recipientJID.getNode(), itemPacket);
        }
      }
    } catch (UserNotFoundException e) {
      throw new UnauthorizedException(e);
    }
  }