SmackConfiguration.java
/**
*
* Copyright 2003-2007 Jive Software.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.jivesoftware.smack;
import java.io.Reader;
import java.io.Writer;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Collections;
import java.util.HashSet;
import java.util.List;
import java.util.Set;
import javax.net.ssl.HostnameVerifier;
import org.jivesoftware.smack.compression.XMPPInputOutputStream;
import org.jivesoftware.smack.debugger.ReflectionDebuggerFactory;
import org.jivesoftware.smack.debugger.SmackDebugger;
import org.jivesoftware.smack.debugger.SmackDebuggerFactory;
import org.jivesoftware.smack.parsing.ExceptionThrowingCallback;
import org.jivesoftware.smack.parsing.ParsingExceptionCallback;
/**
* Represents the configuration of Smack. The configuration is used for:
* <ul>
* <li> Initializing classes by loading them at start-up.
* <li> Getting the current Smack version.
* <li> Getting and setting global library behavior, such as the period of time
* to wait for replies to packets from the server. Note: setting these values
* via the API will override settings in the configuration file.
* </ul>
*
* Configuration settings are stored in org.jivesoftware.smack/smack-config.xml.
*
* @author Gaston Dombiak
*/
public final class SmackConfiguration {
private static int defaultPacketReplyTimeout = 5000;
private static int packetCollectorSize = 5000;
private static List<String> defaultMechs = new ArrayList<String>();
static Set<String> disabledSmackClasses = new HashSet<String>();
final static List<XMPPInputOutputStream> compressionHandlers = new ArrayList<XMPPInputOutputStream>(2);
static boolean smackInitialized = false;
private static SmackDebuggerFactory debuggerFactory = new ReflectionDebuggerFactory();
/**
* Value that indicates whether debugging is enabled. When enabled, a debug
* window will apear for each new connection that will contain the following
* information:<ul>
* <li> Client Traffic -- raw XML traffic generated by Smack and sent to the server.
* <li> Server Traffic -- raw XML traffic sent by the server to the client.
* <li> Interpreted Packets -- shows XML packets from the server as parsed by Smack.
* </ul>
* <p/>
* Debugging can be enabled by setting this field to true, or by setting the Java system
* property <tt>smack.debugEnabled</tt> to true. The system property can be set on the
* command line such as "java SomeApp -Dsmack.debugEnabled=true".
*/
public static boolean DEBUG = 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();
private static HostnameVerifier defaultHostnameVerififer;
/**
* Returns the Smack version information, eg "1.3.0".
*
* @return the Smack version information.
*/
public static String getVersion() {
return SmackInitialization.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 collectorSize 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<String> mechs) {
for(String mech : mechs) {
addSaslMech(mech);
}
}
/**
* Sets Smack debugger factory.
*
* @param debuggerFactory new debugger factory implementation to be used by Smack
*/
public static void setDebuggerFactory(SmackDebuggerFactory debuggerFactory) {
SmackConfiguration.debuggerFactory = debuggerFactory;
}
/**
* @return a debugger factory or <code>null</code>
*/
public static SmackDebuggerFactory getDebuggerFactory() {
return debuggerFactory;
}
/**
* Creates new debugger instance with given arguments as parameters. May
* return <code>null</code> if no DebuggerFactory is set or if the factory
* did not produce a debugger.
*
* @param connection
* @param writer
* @param reader
* @return a new debugger or <code>null</code>
*/
public static SmackDebugger createDebugger(XMPPConnection connection, Writer writer, Reader reader) {
SmackDebuggerFactory factory = getDebuggerFactory();
if (factory == null) {
return null;
} else {
return factory.create(connection, writer, reader);
}
}
/**
* 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<String> 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<String> 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 addCompressionHandler(XMPPInputOutputStream xmppInputOutputStream) {
compressionHandlers.add(xmppInputOutputStream);
}
public static List<XMPPInputOutputStream> getCompresionHandlers() {
List<XMPPInputOutputStream> res = new ArrayList<XMPPInputOutputStream>(compressionHandlers.size());
for (XMPPInputOutputStream ios : compressionHandlers) {
if (ios.isSupported()) {
res.add(ios);
}
}
return res;
}
/**
* Set the default HostnameVerifier that will be used by XMPP connections to verify the hostname
* of a TLS certificate. XMPP connections are able to overwrite this settings by supplying a
* HostnameVerifier in their ConnecitonConfiguration with
* {@link ConnectionConfiguration.Builder#setHostnameVerifier(HostnameVerifier)}.
*/
public static void setDefaultHostnameVerifier(HostnameVerifier verifier) {
defaultHostnameVerififer = verifier;
}
/**
* Convenience method for {@link #addDisabledSmackClass(String)}.
*
* @param clz the Smack class to disable
*/
public static void addDisabledSmackClass(Class<?> clz) {
addDisabledSmackClass(clz.getName());
}
/**
* Add a class to the disabled smack classes.
* <p>
* {@code className} can also be a package name, in this case, the entire
* package is disabled (but can be manually enabled).
* </p>
*
* @param className
*/
public static void addDisabledSmackClass(String className) {
disabledSmackClasses.add(className);
}
public static boolean isDisabledSmackClass(String className) {
for (String disabledClassOrPackage : disabledSmackClasses) {
if (disabledClassOrPackage.equals(className)) {
return true;
}
int lastDotIndex = disabledClassOrPackage.lastIndexOf('.');
// Security check to avoid NPEs if someone entered 'foo.bar.'
if (disabledClassOrPackage.length() > lastDotIndex
// disabledClassOrPackage is not an Class
&& !Character.isUpperCase(disabledClassOrPackage.charAt(lastDotIndex + 1))
// classToLoad startsWith the package disabledClassOrPackage disables
&& className.startsWith(disabledClassOrPackage)) {
// Skip the class because the whole package was disabled
return true;
}
}
return false;
}
/**
* Check if Smack was successfully initialized.
*
* @return true if smack was initialized, false otherwise
*/
public static boolean isSmackInitialized() {
return smackInitialized;
}
/**
* Get the default HostnameVerifier
*
* @return the default HostnameVerifier or <code>null</code> if none was set
*/
static HostnameVerifier getDefaultHostnameVerifier() {
return defaultHostnameVerififer;
}
}