/**
     * Listens for file transfer packets.
     *
     * @param packet packet to be processed
     */
    public void processPacket(Packet packet) {
      if (!(packet instanceof StreamInitiation)) return;

      if (logger.isDebugEnabled()) logger.debug("Incoming Jabber file transfer request.");

      StreamInitiation streamInitiation = (StreamInitiation) packet;

      FileTransferRequest jabberRequest = new FileTransferRequest(manager, streamInitiation);

      // Create a global incoming file transfer request.
      IncomingFileTransferRequestJabberImpl incomingFileTransferRequest =
          new IncomingFileTransferRequestJabberImpl(
              jabberProvider, OperationSetFileTransferJabberImpl.this, jabberRequest);

      // Send a thumbnail request if a thumbnail is advertised in the
      // streamInitiation packet.
      org.jivesoftware.smackx.packet.StreamInitiation.File file = streamInitiation.getFile();

      boolean isThumbnailedFile = false;
      if (file instanceof FileElement) {
        ThumbnailElement thumbnailElement = ((FileElement) file).getThumbnailElement();

        if (thumbnailElement != null) {
          isThumbnailedFile = true;
          incomingFileTransferRequest.createThumbnailListeners(thumbnailElement.getCid());

          ThumbnailIQ thumbnailRequest =
              new ThumbnailIQ(
                  streamInitiation.getTo(),
                  streamInitiation.getFrom(),
                  thumbnailElement.getCid(),
                  IQ.Type.GET);

          if (logger.isDebugEnabled())
            logger.debug("Sending thumbnail request:" + thumbnailRequest.toXML());

          jabberProvider.getConnection().sendPacket(thumbnailRequest);
        }
      }

      if (!isThumbnailedFile) {
        // Create an event associated to this global request.
        FileTransferRequestEvent fileTransferRequestEvent =
            new FileTransferRequestEvent(
                OperationSetFileTransferJabberImpl.this, incomingFileTransferRequest, new Date());

        // Notify the global listener that a request has arrived.
        fireFileTransferRequest(fileTransferRequestEvent);
      }
    }
Beispiel #2
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  /**
   * Parses the given <tt>parser</tt> in order to create a <tt>FileElement</tt> from it.
   *
   * @param parser the parser to parse
   * @see IQProvider#parseIQ(XmlPullParser)
   */
  public IQ parseIQ(final XmlPullParser parser) throws Exception {
    boolean done = false;

    // si
    String id = parser.getAttributeValue("", "id");
    String mimeType = parser.getAttributeValue("", "mime-type");
    StreamInitiation initiation = new StreamInitiation();

    // file
    String name = null;
    String size = null;
    String hash = null;
    String date = null;
    String desc = null;
    ThumbnailElement thumbnail = null;
    boolean isRanged = false;

    // feature
    DataForm form = null;
    DataFormProvider dataFormProvider = new DataFormProvider();

    int eventType;
    String elementName;
    String namespace;

    while (!done) {
      eventType = parser.next();
      elementName = parser.getName();
      namespace = parser.getNamespace();

      if (eventType == XmlPullParser.START_TAG) {
        if (elementName.equals("file")) {
          name = parser.getAttributeValue("", "name");
          size = parser.getAttributeValue("", "size");
          hash = parser.getAttributeValue("", "hash");
          date = parser.getAttributeValue("", "date");
        } else if (elementName.equals("desc")) {
          desc = parser.nextText();
        } else if (elementName.equals("range")) {
          isRanged = true;
        } else if (elementName.equals("x") && namespace.equals("jabber:x:data")) {
          form = (DataForm) dataFormProvider.parseExtension(parser);
        } else if (elementName.equals("thumbnail")) {
          thumbnail = new ThumbnailElement(parser.getText());
        }
      } else if (eventType == XmlPullParser.END_TAG) {
        if (elementName.equals("si")) {
          done = true;
        }
        // The name-attribute is required per XEP-0096, so ignore the
        // IQ if the name is not set to avoid exceptions. Particularly,
        // the SI response of Empathy contains an invalid, empty
        // file-tag.
        else if (elementName.equals("file") && name != null) {
          long fileSize = 0;

          if (size != null && size.trim().length() != 0) {
            try {
              fileSize = Long.parseLong(size);
            } catch (NumberFormatException e) {
              logger.warn(
                  "Received an invalid file size," + " continuing with fileSize set to 0", e);
            }
          }

          FileElement file = new FileElement(name, fileSize);
          file.setHash(hash);

          if (date != null) {
            // try all known date formats
            boolean found = false;
            if (date.matches(".*?T\\d+:\\d+:\\d+(\\.\\d+)?(\\+|-)\\d+:\\d+")) {
              int timeZoneColon = date.lastIndexOf(":");
              date =
                  date.substring(0, timeZoneColon)
                      + date.substring(timeZoneColon + 1, date.length());
            }
            for (DateFormat fmt : DATE_FORMATS) {
              try {
                file.setDate(fmt.parse(date));
                found = true;
                break;
              } catch (ParseException ex) {
              }
            }

            if (!found) {
              logger.warn("Unknown dateformat on incoming file transfer: " + date);
            }
          }

          if (thumbnail != null) file.setThumbnailElement(thumbnail);

          file.setDesc(desc);
          file.setRanged(isRanged);
          initiation.setFile(file);
        }
      }
    }

    initiation.setSesssionID(id);
    initiation.setMimeType(mimeType);
    initiation.setFeatureNegotiationForm(form);

    return initiation;
  }