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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.http.impl.cookie;
28  
29  import org.apache.http.annotation.Immutable;
30  import org.apache.http.cookie.ClientCookie;
31  import org.apache.http.cookie.CommonCookieAttributeHandler;
32  import org.apache.http.cookie.Cookie;
33  import org.apache.http.cookie.CookieOrigin;
34  import org.apache.http.cookie.CookieRestrictionViolationException;
35  import org.apache.http.cookie.MalformedCookieException;
36  import org.apache.http.cookie.SetCookie;
37  import org.apache.http.util.Args;
38  
39  /**
40   *
41   * @since 4.0
42   */
43  @Immutable
44  public class RFC2109VersionHandler extends AbstractCookieAttributeHandler implements CommonCookieAttributeHandler {
45  
46      public RFC2109VersionHandler() {
47          super();
48      }
49  
50      @Override
51      public void parse(final SetCookie cookie, final String value)
52              throws MalformedCookieException {
53          Args.notNull(cookie, "Cookie");
54          if (value == null) {
55              throw new MalformedCookieException("Missing value for version attribute");
56          }
57          if (value.trim().isEmpty()) {
58              throw new MalformedCookieException("Blank value for version attribute");
59          }
60          try {
61             cookie.setVersion(Integer.parseInt(value));
62          } catch (final NumberFormatException e) {
63              throw new MalformedCookieException("Invalid version: "
64                  + e.getMessage());
65          }
66      }
67  
68      @Override
69      public void validate(final Cookie cookie, final CookieOrigin origin)
70              throws MalformedCookieException {
71          Args.notNull(cookie, "Cookie");
72          if (cookie.getVersion() < 0) {
73              throw new CookieRestrictionViolationException("Cookie version may not be negative");
74          }
75      }
76  
77      @Override
78      public String getAttributeName() {
79          return ClientCookie.VERSION_ATTR;
80      }
81  
82  }