示例#1
0
  /**
   * 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;
  }
示例#2
0
  /**
   * Retrieve DiscoverInfo for a specific node.
   *
   * @param caps the <tt>Caps</tt> i.e. the node, the hash and the ver
   * @return The corresponding DiscoverInfo or null if none is known.
   */
  public static DiscoverInfo getDiscoverInfoByCaps(Caps caps) {
    synchronized (caps2discoverInfo) {
      DiscoverInfo discoverInfo = caps2discoverInfo.get(caps);

      /*
       * If we don't have the discoverInfo in the runtime cache yet, we
       * may have it remembered in a previous application instance.
       */
      if (discoverInfo == null) {
        ConfigurationService configurationService = getConfigService();
        String capsPropertyName = getCapsPropertyName(caps);
        String xml = configurationService.getString(capsPropertyName);

        if ((xml != null) && (xml.length() != 0)) {
          IQProvider discoverInfoProvider =
              (IQProvider)
                  ProviderManager.getInstance()
                      .getIQProvider("query", "http://jabber.org/protocol/disco#info");

          if (discoverInfoProvider != null) {
            XmlPullParser parser = new MXParser();

            try {
              parser.setFeature(XmlPullParser.FEATURE_PROCESS_NAMESPACES, true);
              parser.setInput(new StringReader(xml));
              // Start the parser.
              parser.next();
            } catch (XmlPullParserException xppex) {
              parser = null;
            } catch (IOException ioex) {
              parser = null;
            }

            if (parser != null) {
              try {
                discoverInfo = (DiscoverInfo) discoverInfoProvider.parseIQ(parser);
              } catch (Exception ex) {
              }

              if (discoverInfo != null) {
                if (caps.isValid(discoverInfo)) caps2discoverInfo.put(caps, discoverInfo);
                else {
                  logger.error(
                      "Invalid DiscoverInfo for " + caps.getNodeVer() + ": " + discoverInfo);
                  /*
                   * The discoverInfo doesn't seem valid
                   * according to the caps which means that we
                   * must have stored invalid information.
                   * Delete the invalid information in order
                   * to not try to validate it again.
                   */
                  configurationService.removeProperty(capsPropertyName);
                }
              }
            }
          }
        }
      }
      return discoverInfo;
    }
  }