org.apache.hive.jdbc.HttpKerberosRequestInterceptor Maven / Gradle / Ivy
/**
* 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.jdbc;
import java.util.Map;
import java.util.concurrent.locks.ReentrantLock;
import org.apache.hive.service.auth.HttpAuthUtils;
import org.apache.http.HttpException;
import org.apache.http.HttpRequest;
import org.apache.http.client.CookieStore;
import org.apache.http.protocol.HttpContext;
/**
* Authentication interceptor which adds Base64 encoded payload,
* containing the username and kerberos service ticket,
* to the outgoing http request header.
*/
public class HttpKerberosRequestInterceptor extends HttpRequestInterceptorBase {
String principal;
String host;
String serverHttpUrl;
boolean assumeSubject;
// A fair reentrant lock
private static ReentrantLock kerberosLock = new ReentrantLock(true);
public HttpKerberosRequestInterceptor(String principal, String host,
String serverHttpUrl, boolean assumeSubject, CookieStore cs, String cn,
boolean isSSL, Map additionalHeaders) {
super(cs, cn, isSSL, additionalHeaders);
this.principal = principal;
this.host = host;
this.serverHttpUrl = serverHttpUrl;
this.assumeSubject = assumeSubject;
}
@Override
protected void addHttpAuthHeader(HttpRequest httpRequest,
HttpContext httpContext) throws Exception {
try {
// Generate the service ticket for sending to the server.
// Locking ensures the tokens are unique in case of concurrent requests
kerberosLock.lock();
String kerberosAuthHeader = HttpAuthUtils.getKerberosServiceTicket(
principal, host, serverHttpUrl, assumeSubject);
// Set the session key token (Base64 encoded) in the headers
httpRequest.addHeader(HttpAuthUtils.AUTHORIZATION + ": " +
HttpAuthUtils.NEGOTIATE + " ", kerberosAuthHeader);
} catch (Exception e) {
throw new HttpException(e.getMessage(), e);
} finally {
kerberosLock.unlock();
}
}
}