| /* |
| * 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.ahc.auth; |
| |
| import java.util.Map; |
| import java.util.HashMap; |
| import java.util.List; |
| |
| import org.apache.ahc.util.NameValuePair; |
| import org.apache.ahc.util.ParameterParser; |
| |
| public class AuthChallengeParser { |
| /** |
| * Extracts authentication scheme from the given authentication |
| * challenge. |
| * |
| * @param challengeStr the authentication challenge string |
| * @return authentication scheme |
| * |
| * @throws MalformedChallengeException when the authentication challenge string |
| * is malformed |
| * |
| * @since 2.0beta1 |
| */ |
| public static String extractScheme(final String challengeStr) |
| throws MalformedChallengeException { |
| if (challengeStr == null) { |
| throw new IllegalArgumentException("Challenge may not be null"); |
| } |
| int idx = challengeStr.indexOf(' '); |
| String s = null; |
| if (idx == -1) { |
| s = challengeStr; |
| } else { |
| s = challengeStr.substring(0, idx); |
| } |
| if (s.isEmpty()) { |
| throw new MalformedChallengeException("Invalid challenge: " + challengeStr); |
| } |
| return s.toLowerCase(); |
| } |
| |
| /** |
| * Extracts a map of challenge parameters from an authentication challenge. |
| * Keys in the map are lower-cased |
| * |
| * @param challengeStr the authentication challenge string |
| * @return a map of authentication challenge parameters |
| * @throws MalformedChallengeException when the authentication challenge string |
| * is malformed |
| * |
| * @since 2.0beta1 |
| */ |
| public static Map<String, String> extractParams(final String challengeStr) |
| throws MalformedChallengeException { |
| if (challengeStr == null) { |
| throw new IllegalArgumentException("Challenge may not be null"); |
| } |
| int idx = challengeStr.indexOf(' '); |
| if (idx == -1) { |
| throw new MalformedChallengeException("Invalid challenge: " + challengeStr); |
| } |
| Map<String,String> map = new HashMap<String,String>(); |
| ParameterParser parser = new ParameterParser(); |
| List<NameValuePair> params = parser.parse( challengeStr.substring(idx + 1, challengeStr.length()), ','); |
| for (NameValuePair param : params) { |
| map.put(param.getName().toLowerCase(), param.getValue()); |
| } |
| return map; |
| } |
| } |