org.jgroups.auth.sasl.SaslUtils Maven / Gradle / Ivy
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This artifact provides a single jar that contains all classes required to use remote EJB and JMS, including
all dependencies. It is intended for use by those not using maven, maven users should just import the EJB and
JMS BOM's instead (shaded JAR's cause lots of problems with maven, as it is very easy to inadvertently end up
with different versions on classes on the class path).
package org.jgroups.auth.sasl;
import javax.security.sasl.SaslClientFactory;
import javax.security.sasl.SaslServerFactory;
import java.security.NoSuchAlgorithmException;
import java.security.Provider;
import java.security.Security;
import java.util.*;
/**
* Utility methods for handling SASL authentication
*
* @author David M. Lloyd
* @author Tristan Tarrant
*/
public final class SaslUtils {
private SaslUtils() {
}
/**
* Returns an iterator of all of the registered {@code SaslServerFactory}s where the order is
* based on the order of the Provider registration and/or class path order. Class path providers
* are listed before global providers; in the event of a name conflict, the class path provider
* is preferred.
*
* @param classLoader
* the class loader to use
* @param includeGlobal
* {@code true} to include globally registered providers, {@code false} to exclude
* them
* @return the {@code Iterator} of {@code SaslServerFactory}s
*/
public static Iterator getSaslServerFactories(ClassLoader classLoader, boolean includeGlobal) {
return getFactories(SaslServerFactory.class, classLoader, includeGlobal);
}
/**
* Returns an iterator of all of the registered {@code SaslServerFactory}s where the order is
* based on the order of the Provider registration and/or class path order.
*
* @return the {@code Iterator} of {@code SaslServerFactory}s
*/
public static Iterator getSaslServerFactories() {
return getFactories(SaslServerFactory.class, null, true);
}
/**
* Returns an iterator of all of the registered {@code SaslClientFactory}s where the order is
* based on the order of the Provider registration and/or class path order. Class path providers
* are listed before global providers; in the event of a name conflict, the class path provider
* is preferred.
*
* @param classLoader
* the class loader to use
* @param includeGlobal
* {@code true} to include globally registered providers, {@code false} to exclude
* them
* @return the {@code Iterator} of {@code SaslClientFactory}s
*/
public static Iterator getSaslClientFactories(ClassLoader classLoader, boolean includeGlobal) {
return getFactories(SaslClientFactory.class, classLoader, includeGlobal);
}
/**
* Returns an iterator of all of the registered {@code SaslClientFactory}s where the order is
* based on the order of the Provider registration and/or class path order.
*
* @return the {@code Iterator} of {@code SaslClientFactory}s
*/
public static Iterator getSaslClientFactories() {
return getFactories(SaslClientFactory.class, null, true);
}
private static Iterator getFactories(Class type, ClassLoader classLoader, boolean includeGlobal) {
Set factories = new LinkedHashSet<>();
final ServiceLoader loader = ServiceLoader.load(type, classLoader);
for (T factory : loader) {
factories.add(factory);
}
if (includeGlobal) {
Set loadedClasses = new HashSet<>();
final String filter = type.getSimpleName() + ".";
Provider[] providers = Security.getProviders();
for (Provider currentProvider : providers) {
final ClassLoader cl = currentProvider.getClass().getClassLoader();
currentProvider.keySet().stream().filter(currentKey -> currentKey instanceof String && ((String)currentKey).startsWith(filter)
&& ((String)currentKey).indexOf(' ') < 0).forEach(currentKey -> {
String className=currentProvider.getProperty((String)currentKey);
if(className != null && loadedClasses.add(className)) {
try {
int index=((String)currentKey).indexOf(".");
if(index >= 0) {
String service_type=((String)currentKey).substring(0, index);
String algorithm=((String)currentKey).substring(index+1);
Provider.Service svc=currentProvider.getService(service_type, algorithm);
if(svc != null) {
Object inst=svc.newInstance(null);
factories.add((T)inst);
}
}
else {
Class clazz=Class.forName(className, true, cl);
factories.add(clazz.asSubclass(type).getDeclaredConstructor().newInstance());
}
}
catch(ClassCastException | ReflectiveOperationException | NoSuchAlgorithmException e) {
}
}
});
}
}
return factories.iterator();
}
public static SaslServerFactory getSaslServerFactory(String mech, Map props) {
Iterator saslFactories = SaslUtils.getSaslServerFactories(SaslUtils.class.getClassLoader(), true);
while (saslFactories.hasNext()) {
SaslServerFactory saslFactory = saslFactories.next();
for (String supportedMech : saslFactory.getMechanismNames(props)) {
if (supportedMech.equals(mech)) {
return saslFactory;
}
}
}
throw new IllegalArgumentException("No SASL server factory for mech " + mech);
}
public static SaslClientFactory getSaslClientFactory(String mech, Map props) {
Iterator saslFactories = SaslUtils.getSaslClientFactories(SaslUtils.class.getClassLoader(), true);
while (saslFactories.hasNext()) {
SaslClientFactory saslFactory = saslFactories.next();
for (String supportedMech : saslFactory.getMechanismNames(props)) {
if (mech.equals(supportedMech)) {
return saslFactory;
}
}
}
throw new IllegalArgumentException("No SASL client factory for mech " + mech);
}
}