/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You 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.apache.nifi.web.security.spring;
import org.apache.nifi.util.NiFiProperties;
import org.apache.nifi.web.security.kerberos.AlternateKerberosUserDetailsService;
import org.apache.nifi.web.security.kerberos.KerberosService;
import org.springframework.beans.factory.FactoryBean;
import org.springframework.core.io.FileSystemResource;
import org.springframework.security.kerberos.authentication.KerberosServiceAuthenticationProvider;
import org.springframework.security.kerberos.authentication.KerberosTicketValidator;
import org.springframework.security.kerberos.authentication.sun.GlobalSunJaasKerberosConfig;
import org.springframework.security.kerberos.authentication.sun.SunJaasKerberosTicketValidator;
import java.io.File;
public class KerberosServiceFactoryBean implements FactoryBean<KerberosService> {
private KerberosService kerberosService = null;
private NiFiProperties properties = null;
@Override
public KerberosService getObject() throws Exception {
if (kerberosService == null && properties.isKerberosSpnegoSupportEnabled()) {
final File krb5ConfigFile = properties.getKerberosConfigurationFile();
if (krb5ConfigFile != null) {
final GlobalSunJaasKerberosConfig krb5Config = new GlobalSunJaasKerberosConfig();
krb5Config.setKrbConfLocation(krb5ConfigFile.getAbsolutePath());
krb5Config.afterPropertiesSet();
}
kerberosService = new KerberosService();
kerberosService.setKerberosServiceAuthenticationProvider(createKerberosServiceAuthenticationProvider());
}
return kerberosService;
}
@Override
public Class<?> getObjectType() {
return KerberosService.class;
}
@Override
public boolean isSingleton() {
return true;
}
public void setProperties(NiFiProperties properties) {
this.properties = properties;
}
private KerberosServiceAuthenticationProvider createKerberosServiceAuthenticationProvider() throws Exception {
KerberosServiceAuthenticationProvider kerberosServiceAuthenticationProvider = new KerberosServiceAuthenticationProvider();
kerberosServiceAuthenticationProvider.setTicketValidator(createTicketValidator());
kerberosServiceAuthenticationProvider.setUserDetailsService(createAlternateKerberosUserDetailsService());
kerberosServiceAuthenticationProvider.afterPropertiesSet();
return kerberosServiceAuthenticationProvider;
}
private AlternateKerberosUserDetailsService createAlternateKerberosUserDetailsService() {
return new AlternateKerberosUserDetailsService();
}
private KerberosTicketValidator createTicketValidator() throws Exception {
SunJaasKerberosTicketValidator ticketValidator = new SunJaasKerberosTicketValidator();
ticketValidator.setServicePrincipal(properties.getKerberosSpnegoPrincipal());
ticketValidator.setKeyTabLocation(new FileSystemResource(properties.getKerberosSpnegoKeytabLocation()));
ticketValidator.afterPropertiesSet();
return ticketValidator;
}
}