| /* |
| * 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 javax.security.auth.Subject; |
| |
| 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; |
| Subject loggedInSubject; |
| |
| // A fair reentrant lock |
| private static ReentrantLock kerberosLock = new ReentrantLock(true); |
| |
| public HttpKerberosRequestInterceptor(String principal, String host, String serverHttpUrl, Subject loggedInSubject, |
| CookieStore cs, String cn, boolean isSSL, Map<String, String> additionalHeaders, |
| Map<String, String> customCookies) { |
| super(cs, cn, isSSL, additionalHeaders, customCookies); |
| this.principal = principal; |
| this.host = host; |
| this.serverHttpUrl = serverHttpUrl; |
| this.loggedInSubject = loggedInSubject; |
| } |
| |
| @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, loggedInSubject); |
| // Set the session key token (Base64 encoded) in the headers |
| httpRequest.addHeader(HttpAuthUtils.AUTHORIZATION + ": " + HttpAuthUtils.NEGOTIATE + " ", kerberosAuthHeader); |
| } catch (Exception e) { |
| // e.getMessage() is null at UndeclaredThrowableException |
| throw new HttpException("Failed to find any Kerberos ticket", e); |
| } finally { |
| kerberosLock.unlock(); |
| } |
| } |
| |
| @Override |
| protected String getAuthType() { |
| return "KERBEROS"; |
| } |
| } |