1 /*
2 * ====================================================================
3 * Licensed to the Apache Software Foundation (ASF) under one
4 * or more contributor license agreements. See the NOTICE file
5 * distributed with this work for additional information
6 * regarding copyright ownership. The ASF licenses this file
7 * to you under the Apache License, Version 2.0 (the
8 * "License"); you may not use this file except in compliance
9 * with the License. You may obtain a copy of the License at
10 *
11 * http://www.apache.org/licenses/LICENSE-2.0
12 *
13 * Unless required by applicable law or agreed to in writing,
14 * software distributed under the License is distributed on an
15 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
16 * KIND, either express or implied. See the License for the
17 * specific language governing permissions and limitations
18 * under the License.
19 * ====================================================================
20 *
21 * This software consists of voluntary contributions made by many
22 * individuals on behalf of the Apache Software Foundation. For more
23 * information on the Apache Software Foundation, please see
24 * <http://www.apache.org/>.
25 *
26 */
27 package org.apache.hc.client5.http.impl.auth;
28
29 import java.util.Map;
30
31 import org.apache.hc.client5.http.auth.AuthScope;
32 import org.apache.hc.client5.http.auth.Credentials;
33
34 final class CredentialsMatcher {
35
36 /**
37 * Find matching {@link Credentials credentials} for the given authentication scope.
38 *
39 * @param map the credentials hash map
40 * @param authScope the {@link AuthScope authentication scope}
41 * @return the credentials
42 *
43 */
44 static Credentials matchCredentials(final Map<AuthScope, Credentials> map, final AuthScope authScope) {
45 // see if we get a direct hit
46 Credentials creds = map.get(authScope);
47 if (creds == null) {
48 // Nope.
49 // Do a full scan
50 int bestMatchFactor = -1;
51 AuthScope bestMatch = null;
52 for (final AuthScope current: map.keySet()) {
53 final int factor = authScope.match(current);
54 if (factor > bestMatchFactor) {
55 bestMatchFactor = factor;
56 bestMatch = current;
57 }
58 }
59 if (bestMatch != null) {
60 creds = map.get(bestMatch);
61 }
62 }
63 return creds;
64 }
65
66 }