();
private static boolean localSocks5ProxyEnabled = true;
private static int localSocks5ProxyPort = 7777;
private static int packetCollectorSize = 5000;
private static boolean initialized = false;
/**
* 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();
/**
* This automatically enables EntityCaps for new connections if it is set to true
*/
private static boolean autoEnableEntityCaps = true;
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
*/
/**
* Sets the location of the config file on the classpath. Only required if changing from the default location of classpath:META-INF/smack-config.xml.
*
*
* This method must be called before accessing any other class in Smack.
*
* @param configFileUrl The location of the config file.
* @param loader The classloader to use if the URL has a protocol of classpath and the file is not located on the default classpath.
* This can be set to null to use defaults and is ignored for all other protocols.
* @throws IllegalArgumentException If the config URL is invalid in that it cannot open an {@link InputStream}
*/
public static void setConfigFileUrl(String configFileUrl, ClassLoader loader) {
try {
configFileStream = FileUtils.getStreamForUrl(configFileUrl, loader);
}
catch (Exception e) {
throw new IllegalArgumentException("Failed to create input stream from specified file URL ["+ configFileUrl + "]", e);
}
initialize();
}
/**
* Sets the {@link InputStream} representing the smack configuration file. This can be used to override the default with something that is not on the classpath.
*
* This method must be called before accessing any other class in Smack.
* @param configFile
*/
public static void setConfigFileStream(InputStream configFile) {
configFileStream = configFile;
initialize();
}
/**
* 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 getPacketReplyTimeout() {
initialize();
// The timeout value must be greater than 0 otherwise we will answer the default value
if (packetReplyTimeout <= 0) {
packetReplyTimeout = 5000;
}
return packetReplyTimeout;
}
/**
* 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 setPacketReplyTimeout(int timeout) {
initialize();
if (timeout <= 0) {
throw new IllegalArgumentException();
}
packetReplyTimeout = timeout;
}
/**
* Returns the number of milleseconds delay between sending keep-alive
* requests to the server. The default value is 30000 ms. A value of -1
* mean no keep-alive requests will be sent to the server.
*
* @return the milliseconds to wait between keep-alive requests, or -1 if
* no keep-alive should be sent.
*/
public static int getKeepAliveInterval() {
initialize();
return keepAliveInterval;
}
/**
* Sets the number of milleseconds delay between sending keep-alive
* requests to the server. The default value is 30000 ms. A value of -1
* mean no keep-alive requests will be sent to the server.
*
* @param interval the milliseconds to wait between keep-alive requests,
* or -1 if no keep-alive should be sent.
*/
public static void setKeepAliveInterval(int interval) {
initialize();
keepAliveInterval = interval;
}
/**
* 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() {
initialize();
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) {
initialize();
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) {
initialize();
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) {
initialize();
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) {
initialize();
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) {
initialize();
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);
}
/**
* Returns true if the local Socks5 proxy should be started. Default is true.
*
* @return if the local Socks5 proxy should be started
*/
public static boolean isLocalSocks5ProxyEnabled() {
initialize();
return localSocks5ProxyEnabled;
}
/**
* Sets if the local Socks5 proxy should be started. Default is true.
*
* @param localSocks5ProxyEnabled if the local Socks5 proxy should be started
*/
public static void setLocalSocks5ProxyEnabled(boolean localSocks5ProxyEnabled) {
initialize();
SmackConfiguration.localSocks5ProxyEnabled = localSocks5ProxyEnabled;
}
/**
* Return the port of the local Socks5 proxy. Default is 7777.
*
* @return the port of the local Socks5 proxy
*/
public static int getLocalSocks5ProxyPort() {
initialize();
return localSocks5ProxyPort;
}
/**
* Sets the port of the local Socks5 proxy. Default is 7777. If you set the port to a negative
* value Smack tries the absolute value and all following until it finds an open port.
*
* @param localSocks5ProxyPort the port of the local Socks5 proxy to set
*/
public static void setLocalSocks5ProxyPort(int localSocks5ProxyPort) {
initialize();
SmackConfiguration.localSocks5ProxyPort = localSocks5ProxyPort;
}
/**
* Check if Entity Caps are enabled as default for every new connection
* @return
*/
public static boolean autoEnableEntityCaps() {
initialize();
return autoEnableEntityCaps;
}
/**
* Set if Entity Caps are enabled or disabled for every new connection
*
* @param true if Entity Caps should be auto enabled, false if not
*/
public static void setAutoEnableEntityCaps(boolean b) {
initialize();
autoEnableEntityCaps = b;
}
/**
* Set the default parsing exception callback for all newly created connections
*
* @param callback
* @see ParsingExceptionCallback
*/
public static void setDefaultParsingExceptionCallback(ParsingExceptionCallback callback) {
initialize();
defaultCallback = callback;
}
/**
* Returns the default parsing exception callback
*
* @return the default parsing exception callback
* @see ParsingExceptionCallback
*/
public static ParsingExceptionCallback getDefaultParsingExceptionCallback() {
initialize();
return defaultCallback;
}
private static void parseClassToLoad(XmlPullParser parser) throws Exception {
String className = parser.nextText();
// 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) {
log.log(Level.WARNING, "A startup class [" + className + "] specified in smack-config.xml could not be loaded: ");
}
}
private static int parseIntProperty(XmlPullParser parser, int defaultValue)
throws Exception
{
try {
return Integer.parseInt(parser.nextText());
}
catch (NumberFormatException nfe) {
log.log(Level.SEVERE, "Could not parse integer", nfe);
return defaultValue;
}
}
/*
* Order of precedence for config file is VM arg, setConfigXXX methods and embedded default file location.
*/
private static void initialize() {
if (initialized) {
return;
}
initialized = true;
String configFileLocation = System.getProperty("smack.config.file");
if (configFileLocation != null) {
try {
configFileStream = FileUtils.getStreamForUrl(configFileLocation, null);
}
catch (Exception e) {
log.log(Level.SEVERE, "Error creating input stream for config file [" + configFileLocation + "] from VM argument", e);
}
}
if (configFileStream == null) {
try {
configFileStream = FileUtils.getStreamForUrl(DEFAULT_CONFIG_FILE, null);
}
catch (Exception e) {
log.log(Level.INFO, "Could not create input stream for default config file [" + DEFAULT_CONFIG_FILE + "]", e);
}
}
if (configFileStream != null) {
readFile(configFileStream);
}
else {
log.log(Level.INFO, "No configuration file found");
}
}
private static void readFile(InputStream cfgFileStream) {
XmlPullParser parser = new MXParser();
try {
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("className")) {
// Attempt to load the class so that the class can get initialized
parseClassToLoad(parser);
}
else if (parser.getName().equals("packetReplyTimeout")) {
packetReplyTimeout = parseIntProperty(parser, packetReplyTimeout);
}
else if (parser.getName().equals("keepAliveInterval")) {
keepAliveInterval = parseIntProperty(parser, keepAliveInterval);
}
else if (parser.getName().equals("mechName")) {
defaultMechs.add(parser.nextText());
}
else if (parser.getName().equals("localSocks5ProxyEnabled")) {
localSocks5ProxyEnabled = Boolean.parseBoolean(parser.nextText());
}
else if (parser.getName().equals("localSocks5ProxyPort")) {
localSocks5ProxyPort = parseIntProperty(parser, localSocks5ProxyPort);
}
else if (parser.getName().equals("packetCollectorSize")) {
packetCollectorSize = parseIntProperty(parser, packetCollectorSize);
}
else if (parser.getName().equals("autoEnableEntityCaps")) {
autoEnableEntityCaps = Boolean.parseBoolean(parser.nextText());
}
}
eventType = parser.next();
} while (eventType != XmlPullParser.END_DOCUMENT);
} catch (Exception e) {
log.log(Level.SEVERE, "Error occurred while reading config file", e);
}
finally {
try {
cfgFileStream.close();
} catch (IOException e) {
log.log(Level.INFO, "Error while closing config file input stream", e);
}
}
}
}