| /* |
| * 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.nutch.protocol.httpclient; |
| |
| import java.lang.invoke.MethodHandles; |
| import java.util.ArrayList; |
| import java.util.Collection; |
| |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| import org.apache.hadoop.conf.Configuration; |
| import org.apache.hadoop.conf.Configurable; |
| |
| import org.apache.nutch.metadata.Metadata; |
| |
| /** |
| * Provides the Http protocol implementation with the ability to authenticate |
| * when prompted. The goal is to provide multiple authentication types but for |
| * now just the {@link HttpBasicAuthentication} authentication type is provided. |
| * |
| * @see HttpBasicAuthentication |
| * @see Http |
| * @see HttpResponse |
| * |
| * @author Matt Tencati |
| */ |
| public class HttpAuthenticationFactory implements Configurable { |
| |
| /** |
| * The HTTP Authentication (WWW-Authenticate) header which is returned by a |
| * webserver requiring authentication. |
| */ |
| public static final String WWW_AUTHENTICATE = "WWW-Authenticate"; |
| |
| private static final Logger LOG = LoggerFactory |
| .getLogger(MethodHandles.lookup().lookupClass()); |
| |
| private Configuration conf = null; |
| |
| public HttpAuthenticationFactory(Configuration conf) { |
| setConf(conf); |
| } |
| |
| public void setConf(Configuration conf) { |
| this.conf = conf; |
| } |
| |
| public Configuration getConf() { |
| return conf; |
| } |
| |
| public HttpAuthentication findAuthentication(Metadata header) { |
| |
| if (header == null) |
| return null; |
| |
| try { |
| Collection<String> challenge = new ArrayList<String>(); |
| challenge.add(header.get(WWW_AUTHENTICATE)); |
| |
| for (String challengeString : challenge) { |
| if (challengeString.equals("NTLM")) |
| challengeString = "Basic realm=techweb"; |
| |
| if (LOG.isTraceEnabled()) |
| LOG.trace("Checking challengeString=" + challengeString); |
| |
| HttpAuthentication auth = HttpBasicAuthentication.getAuthentication( |
| challengeString, conf); |
| if (auth != null) |
| return auth; |
| |
| // TODO Add additional Authentication lookups here |
| } |
| } catch (Exception e) { |
| LOG.error("Error: ", e); |
| } |
| return null; |
| } |
| } |