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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.util.Date;
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      private final static Pattern MAX_AGE_PATTERN = Pattern.compile("^\\-?[0-9]+$");
52  
53      public LaxMaxAgeHandler() {
54          super();
55      }
56  
57      @Override
58      public void parse(final SetCookie cookie, final String value) throws MalformedCookieException {
59          Args.notNull(cookie, "Cookie");
60          if (TextUtils.isBlank(value)) {
61              return;
62          }
63          final Matcher matcher = MAX_AGE_PATTERN.matcher(value);
64          if (matcher.matches()) {
65              final int age;
66              try {
67                  age = Integer.parseInt(value);
68              } catch (final NumberFormatException e) {
69                  return;
70              }
71              final Date expiryDate = age >= 0 ? new Date(System.currentTimeMillis() + age * 1000L) :
72                      new Date(Long.MIN_VALUE);
73              cookie.setExpiryDate(expiryDate);
74          }
75      }
76  
77      @Override
78      public String getAttributeName() {
79          return Cookie.MAX_AGE_ATTR;
80      }
81  
82  }