();
static {
String smackVersion;
try {
InputStream is = FileUtils.getStreamForUrl("classpath:org.jivesoftware.smack/version", null);
byte[] buf = new byte[1024];
is.read(buf);
smackVersion = new String(buf, "UTF-8");
} catch(Exception e) {
LOGGER.log(Level.SEVERE, "Could not determine Smack version", e);
smackVersion = "unkown";
}
SMACK_VERSION = smackVersion;
String disabledClasses = System.getProperty("smack.disabledClasses");
if (disabledClasses != null) {
String[] splitDisabledClasses = disabledClasses.split(",");
for (String s : splitDisabledClasses) disabledSmackClasses.add(s);
}
try {
FileUtils.addLines("classpath:org.jivesoftware.smack/disabledClasses", disabledSmackClasses);
}
catch (Exception e) {
throw new IllegalStateException(e);
}
InputStream configFileStream;
try {
configFileStream = FileUtils.getStreamForUrl(DEFAULT_CONFIG_FILE, null);
}
catch (Exception e) {
throw new IllegalStateException(e);
}
try {
processConfigFile(configFileStream, null);
}
catch (Exception e) {
throw new IllegalStateException(e);
}
}
/**
* The default parsing exception callback is {@link ExceptionThrowingCallback} which will
* throw an exception and therefore disconnect the active connection.
*/
private static ParsingExceptionCallback defaultCallback = new ExceptionThrowingCallback();
private SmackConfiguration() {
}
/**
* Loads the configuration from the smack-config.xml file.
*
* So far this means that:
* 1) a set of classes will be loaded in order to execute their static init block
* 2) retrieve and set the current Smack release
*/
/**
* Returns the Smack version information, eg "1.3.0".
*
* @return the Smack version information.
*/
public static String getVersion() {
return SMACK_VERSION;
}
/**
* Returns the number of milliseconds to wait for a response from
* the server. The default value is 5000 ms.
*
* @return the milliseconds to wait for a response from the server
*/
public static int getDefaultPacketReplyTimeout() {
// The timeout value must be greater than 0 otherwise we will answer the default value
if (defaultPacketReplyTimeout <= 0) {
defaultPacketReplyTimeout = 5000;
}
return defaultPacketReplyTimeout;
}
/**
* Sets the number of milliseconds to wait for a response from
* the server.
*
* @param timeout the milliseconds to wait for a response from the server
*/
public static void setDefaultPacketReplyTimeout(int timeout) {
if (timeout <= 0) {
throw new IllegalArgumentException();
}
defaultPacketReplyTimeout = timeout;
}
/**
* Gets the default max size of a packet collector before it will delete
* the older packets.
*
* @return The number of packets to queue before deleting older packets.
*/
public static int getPacketCollectorSize() {
return packetCollectorSize;
}
/**
* Sets the default max size of a packet collector before it will delete
* the older packets.
*
* @param The number of packets to queue before deleting older packets.
*/
public static void setPacketCollectorSize(int collectorSize) {
packetCollectorSize = collectorSize;
}
/**
* Add a SASL mechanism to the list to be used.
*
* @param mech the SASL mechanism to be added
*/
public static void addSaslMech(String mech) {
if(! defaultMechs.contains(mech) ) {
defaultMechs.add(mech);
}
}
/**
* Add a Collection of SASL mechanisms to the list to be used.
*
* @param mechs the Collection of SASL mechanisms to be added
*/
public static void addSaslMechs(Collection mechs) {
for(String mech : mechs) {
addSaslMech(mech);
}
}
/**
* Remove a SASL mechanism from the list to be used.
*
* @param mech the SASL mechanism to be removed
*/
public static void removeSaslMech(String mech) {
defaultMechs.remove(mech);
}
/**
* Remove a Collection of SASL mechanisms to the list to be used.
*
* @param mechs the Collection of SASL mechanisms to be removed
*/
public static void removeSaslMechs(Collection mechs) {
defaultMechs.removeAll(mechs);
}
/**
* Returns the list of SASL mechanisms to be used. If a SASL mechanism is
* listed here it does not guarantee it will be used. The server may not
* support it, or it may not be implemented.
*
* @return the list of SASL mechanisms to be used.
*/
public static List getSaslMechs() {
return Collections.unmodifiableList(defaultMechs);
}
/**
* Set the default parsing exception callback for all newly created connections
*
* @param callback
* @see ParsingExceptionCallback
*/
public static void setDefaultParsingExceptionCallback(ParsingExceptionCallback callback) {
defaultCallback = callback;
}
/**
* Returns the default parsing exception callback
*
* @return the default parsing exception callback
* @see ParsingExceptionCallback
*/
public static ParsingExceptionCallback getDefaultParsingExceptionCallback() {
return defaultCallback;
}
public static void processConfigFile(InputStream cfgFileStream, Collection exceptions) throws Exception {
XmlPullParser parser = XmlPullParserFactory.newInstance().newPullParser();
parser.setFeature(XmlPullParser.FEATURE_PROCESS_NAMESPACES, true);
parser.setInput(cfgFileStream, "UTF-8");
int eventType = parser.getEventType();
do {
if (eventType == XmlPullParser.START_TAG) {
if (parser.getName().equals("startupClasses")) {
parseClassesToLoad(parser, false, exceptions);
}
else if (parser.getName().equals("optionalStartupClasses")) {
parseClassesToLoad(parser, true, exceptions);
}
}
eventType = parser.next();
}
while (eventType != XmlPullParser.END_DOCUMENT);
try {
cfgFileStream.close();
}
catch (IOException e) {
LOGGER.log(Level.SEVERE, "Error while closing config file input stream", e);
}
}
private static void parseClassesToLoad(XmlPullParser parser, boolean optional, Collection exceptions) throws XmlPullParserException, IOException, Exception {
final String startName = parser.getName();
int eventType;
String name;
do {
eventType = parser.next();
name = parser.getName();
if (eventType == XmlPullParser.START_TAG && "className".equals(name)) {
if (disabledSmackClasses.contains(name)) {
LOGGER.info("Not loading disabled Smack class " + name);
}
else {
String classToLoad = parser.nextText();
try {
loadSmackClass(classToLoad, optional);
} catch (Exception e) {
// Don't throw the exception if an exceptions collection is given, instead
// record it there. This is used for unit testing purposes.
if (exceptions != null) {
exceptions.add(e);
} else {
throw e;
}
}
}
}
} while (! (eventType == XmlPullParser.END_TAG && startName.equals(name)));
}
private static void loadSmackClass(String className, boolean optional) throws Exception {
// Attempt to load the class so that the class can get initialized
try {
Class initClass = Class.forName(className);
if (SmackInitializer.class.isAssignableFrom(initClass)) {
SmackInitializer initializer = (SmackInitializer) initClass.newInstance();
initializer.initialize();
}
}
catch (ClassNotFoundException cnfe) {
Level logLevel;
if (optional) {
logLevel = Level.FINE;
}
else {
logLevel = Level.WARNING;
}
LOGGER.log(logLevel, "A startup class [" + className
+ "] specified in smack-config.xml could not be loaded: ");
if (!optional)
throw cnfe;
}
}
}