/*
* JBoss, Home of Professional Open Source.
* Copyright 2014, Red Hat, Inc., and individual contributors
* as indicated by the @author tags. See the copyright.txt file in the
* distribution for a full listing of individual contributors.
*
* This is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation; either version 2.1 of
* the License, or (at your option) any later version.
*
* This software is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this software; if not, write to the Free
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA, or see the FSF site: http://www.fsf.org.
*/
package org.jboss.as.domain.management.security;
import static org.jboss.as.domain.management.logging.DomainManagementLogger.SECURITY_LOGGER;
import static org.jboss.as.domain.management.security.SecurityRealmService.LOADED_USERNAME_KEY;
import java.io.IOException;
import java.util.Collections;
import java.util.Map;
import java.util.Set;
import javax.security.auth.callback.Callback;
import javax.security.auth.callback.CallbackHandler;
import javax.security.auth.callback.UnsupportedCallbackException;
import javax.security.sasl.AuthorizeCallback;
import org.jboss.as.domain.management.AuthMechanism;
import org.jboss.as.domain.management.SecurityRealm;
import org.jboss.msc.service.Service;
import org.jboss.msc.service.ServiceName;
import org.jboss.msc.service.StartContext;
import org.jboss.msc.service.StartException;
import org.jboss.msc.service.StopContext;
/**
* A CallbackHandler for Kerberos authentication. Currently no Callbacks are supported but later this may be expanded for
* additional verification.
*
* @author <a href="mailto:darran.lofthouse@jboss.com">Darran Lofthouse</a>
*/
public class KerberosCallbackHandler implements Service<CallbackHandlerService>, CallbackHandlerService {
private static final String SERVICE_SUFFIX = "kerberos";
private final boolean removeRealm;
KerberosCallbackHandler(final boolean removeRealm) {
this.removeRealm = removeRealm;
}
/*
* Service Methods
*/
public CallbackHandlerService getValue() throws IllegalStateException, IllegalArgumentException {
return this;
}
public void start(StartContext context) throws StartException {
}
public void stop(StopContext context) {
}
/*
* CallbackHandlerService Methods
*/
public AuthMechanism getPreferredMechanism() {
return AuthMechanism.KERBEROS;
}
public Set<AuthMechanism> getSupplementaryMechanisms() {
return Collections.emptySet();
}
public Map<String, String> getConfigurationOptions() {
return Collections.emptyMap();
}
public boolean isReady() {
return true;
}
@Override
public boolean isReadyForHttpChallenge() {
// Kerberos so if configured it is ready.
return true;
}
public CallbackHandler getCallbackHandler(final Map<String, Object> sharedState) {
return new CallbackHandler() {
@Override
public void handle(Callback[] callbacks) throws IOException, UnsupportedCallbackException {
for (Callback current : callbacks) {
if (current instanceof AuthorizeCallback) {
AuthorizeCallback acb = (AuthorizeCallback) current;
boolean authorized = acb.getAuthenticationID().equals(acb.getAuthorizationID());
if (authorized) {
String userName = acb.getAuthenticationID();
int atIndex = acb.getAuthenticationID().indexOf('@');
if (removeRealm && atIndex > 0) {
sharedState.put(LOADED_USERNAME_KEY, userName.substring(0, atIndex));
}
} else {
SECURITY_LOGGER.tracef(
"Checking 'AuthorizeCallback', authorized=false, authenticationID=%s, authorizationID=%s.",
acb.getAuthenticationID(), acb.getAuthorizationID());
}
acb.setAuthorized(authorized);
} else {
throw new UnsupportedCallbackException(current);
}
}
}
};
}
@Override
public org.wildfly.security.auth.server.SecurityRealm getElytronSecurityRealm() {
// TODO Elytron Add legacy Kerberos support.
return null;
}
public static final class ServiceUtil {
private ServiceUtil() {
}
public static ServiceName createServiceName(final String realmName) {
return SecurityRealm.ServiceUtil.createServiceName(realmName).append(SERVICE_SUFFIX);
}
}
}