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.cookie;
28
29 import java.time.Instant;
30 import java.util.regex.Matcher;
31 import java.util.regex.Pattern;
32
33 import org.apache.hc.client5.http.cookie.CommonCookieAttributeHandler;
34 import org.apache.hc.client5.http.cookie.Cookie;
35 import org.apache.hc.client5.http.cookie.MalformedCookieException;
36 import org.apache.hc.client5.http.cookie.SetCookie;
37 import org.apache.hc.core5.annotation.Contract;
38 import org.apache.hc.core5.annotation.ThreadingBehavior;
39 import org.apache.hc.core5.util.Args;
40 import org.apache.hc.core5.util.TextUtils;
41
42 /**
43 * Cookie {@code max-age} attribute handler conformant to the more relaxed interpretation
44 * of HTTP state management.
45 *
46 * @since 4.4
47 */
48 @Contract(threading = ThreadingBehavior.STATELESS)
49 public class LaxMaxAgeHandler extends AbstractCookieAttributeHandler implements CommonCookieAttributeHandler {
50
51 /**
52 * Singleton instance.
53 *
54 * @since 5.2
55 */
56 public static final LaxMaxAgeHandler INSTANCE = new LaxMaxAgeHandler();
57
58 private final static Pattern MAX_AGE_PATTERN = Pattern.compile("^\\-?[0-9]+$");
59
60 public LaxMaxAgeHandler() {
61 super();
62 }
63
64 @Override
65 public void parse(final SetCookie cookie, final String value) throws MalformedCookieException {
66 Args.notNull(cookie, "Cookie");
67 if (TextUtils.isBlank(value)) {
68 return;
69 }
70 final Matcher matcher = MAX_AGE_PATTERN.matcher(value);
71 if (matcher.matches()) {
72 final int age;
73 try {
74 age = Integer.parseInt(value);
75 } catch (final NumberFormatException e) {
76 return;
77 }
78 final Instant expiryDate = age >= 0 ? Instant.now().plusSeconds(age) :
79 Instant.EPOCH;
80 cookie.setExpiryDate(expiryDate);
81 }
82 }
83
84 @Override
85 public String getAttributeName() {
86 return Cookie.MAX_AGE_ATTR;
87 }
88
89 }