/**
* 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.hive.service.auth;
import java.util.Hashtable;
import javax.naming.Context;
import javax.naming.NamingException;
import javax.naming.directory.DirContext;
import javax.naming.directory.InitialDirContext;
import javax.security.sasl.AuthenticationException;
import org.apache.hadoop.hive.conf.HiveConf;
public class LdapAuthenticationProviderImpl implements PasswdAuthenticationProvider {
private final String ldapURL;
private final String baseDN;
private final String ldapDomain;
LdapAuthenticationProviderImpl () {
HiveConf conf = new HiveConf();
this.ldapURL = conf.getVar(HiveConf.ConfVars.HIVE_SERVER2_PLAIN_LDAP_URL);
this.baseDN = conf.getVar(HiveConf.ConfVars.HIVE_SERVER2_PLAIN_LDAP_BASEDN);
this.ldapDomain = conf.getVar(HiveConf.ConfVars.HIVE_SERVER2_PLAIN_LDAP_DOMAIN);
}
@Override
public void Authenticate(String user, String password)
throws AuthenticationException {
Hashtable<String, Object> env = new Hashtable<String, Object>();
env.put(Context.INITIAL_CONTEXT_FACTORY, "com.sun.jndi.ldap.LdapCtxFactory");
env.put(Context.PROVIDER_URL, ldapURL);
// If the domain is supplied, then append it. LDAP providers like Active Directory
// use a fully qualified user name like foo@bar.com.
if (ldapDomain != null) {
user = user + "@" + ldapDomain;
}
// setup the security principal
String bindDN;
if (baseDN != null) {
bindDN = "uid=" + user + "," + baseDN;
} else {
bindDN = user;
}
env.put(Context.SECURITY_AUTHENTICATION, "simple");
env.put(Context.SECURITY_PRINCIPAL, bindDN);
env.put(Context.SECURITY_CREDENTIALS, password);
try {
// Create initial context
DirContext ctx = new InitialDirContext(env);
ctx.close();
} catch (NamingException e) {
throw new AuthenticationException("Error validating LDAP user", e);
}
return;
}
}