/**
* Parse a properties sub-packet. If any errors occur while de-serializing Java object properties,
* an exception will be printed and not thrown since a thrown exception will shut down the entire
* connection. ClassCastExceptions will occur when both the sender and receiver of the packet
* don't have identical versions of the same class.
*
* @param parser the XML parser, positioned at the start of a properties sub-packet.
* @return a map of the properties.
* @throws Exception if an error occurs while parsing the properties.
*/
public static Map<String, Object> parseProperties(XmlPullParser parser) throws Exception {
Map<String, Object> properties = new HashMap<String, Object>();
while (true) {
int eventType = parser.next();
if (eventType == XmlPullParser.START_TAG && parser.getName().equals("property")) {
// Parse a property
boolean done = false;
String name = null;
String type = null;
String valueText = null;
Object value = null;
while (!done) {
eventType = parser.next();
if (eventType == XmlPullParser.START_TAG) {
String elementName = parser.getName();
if (elementName.equals("name")) {
name = parser.nextText();
} else if (elementName.equals("value")) {
type = parser.getAttributeValue("", "type");
valueText = parser.nextText();
}
} else if (eventType == XmlPullParser.END_TAG) {
if (parser.getName().equals("property")) {
if ("integer".equals(type)) {
value = Integer.valueOf(valueText);
} else if ("long".equals(type)) {
value = Long.valueOf(valueText);
} else if ("float".equals(type)) {
value = Float.valueOf(valueText);
} else if ("double".equals(type)) {
value = Double.valueOf(valueText);
} else if ("boolean".equals(type)) {
value = Boolean.valueOf(valueText);
} else if ("string".equals(type)) {
value = valueText;
} else if ("java-object".equals(type)) {
try {
byte[] bytes = StringUtils.decodeBase64(valueText);
ObjectInputStream in = new ObjectInputStream(new ByteArrayInputStream(bytes));
value = in.readObject();
} catch (Exception e) {
LOGGER.log(Level.SEVERE, "", e);
}
}
if (name != null && value != null) {
properties.put(name, value);
}
done = true;
}
}
}
} else if (eventType == XmlPullParser.END_TAG) {
if (parser.getName().equals("properties")) {
break;
}
}
}
return properties;
}
@Override
protected void printContent(StringBuilder xml) {
List<PayloadTypePacketExtension> payloadTypes = getPayloadTypes();
List<SourcePacketExtension> sources = getSources();
int[] ssrcs = getSSRCs();
for (PayloadTypePacketExtension payloadType : payloadTypes) xml.append(payloadType.toXML());
for (SourcePacketExtension source : sources) xml.append(source.toXML());
for (int i = 0; i < ssrcs.length; i++) {
xml.append('<')
.append(SSRC_ELEMENT_NAME)
.append('>')
.append(Long.toString(ssrcs[i] & 0xFFFFFFFFL))
.append("</")
.append(SSRC_ELEMENT_NAME)
.append('>');
}
}
/**
* Decodes a String into an object of the specified type. If the object type is not supported,
* null will be returned.
*
* @param type the type of the property.
* @param value the encode String value to decode.
* @return the String value decoded into the specified type.
* @throws Exception If decoding failed due to an error.
*/
private static Object decode(Class type, String value) throws Exception {
if (type.getName().equals("java.lang.String")) {
return value;
}
if (type.getName().equals("boolean")) {
return Boolean.valueOf(value);
}
if (type.getName().equals("int")) {
return Integer.valueOf(value);
}
if (type.getName().equals("long")) {
return Long.valueOf(value);
}
if (type.getName().equals("float")) {
return Float.valueOf(value);
}
if (type.getName().equals("double")) {
return Double.valueOf(value);
}
if (type.getName().equals("java.lang.Class")) {
return Class.forName(value);
}
return null;
}
/**
* 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;
}
/**
* Returns the next unique thread id. Each thread id made up of a short alphanumeric prefix along
* with a unique numeric value.
*
* @return the next thread id.
*/
public static synchronized String nextThreadID() {
return prefix + Long.toString(id++);
}
