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1   /*
2    * Copyright 2015 The Netty Project
3    *
4    * The Netty Project licenses this file to you under the Apache License,
5    * version 2.0 (the "License"); you may not use this file except in compliance
6    * with the License. You may obtain a copy of the License at:
7    *
8    *   http://www.apache.org/licenses/LICENSE-2.0
9    *
10   * Unless required by applicable law or agreed to in writing, software
11   * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
12   * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
13   * License for the specific language governing permissions and limitations
14   * under the License.
15   */
16  package io.netty.handler.codec.http.cookie;
17  
18  import static io.netty.handler.codec.http.cookie.CookieUtil.firstInvalidCookieNameOctet;
19  import static io.netty.handler.codec.http.cookie.CookieUtil.firstInvalidCookieValueOctet;
20  import static io.netty.handler.codec.http.cookie.CookieUtil.unwrapValue;
21  
22  /**
23   * Parent of Client and Server side cookie encoders
24   */
25  public abstract class CookieEncoder {
26  
27      protected final boolean strict;
28  
29      protected CookieEncoder(boolean strict) {
30          this.strict = strict;
31      }
32  
33      protected void validateCookie(String name, String value) {
34          if (strict) {
35              int pos;
36  
37              if ((pos = firstInvalidCookieNameOctet(name)) >= 0) {
38                  throw new IllegalArgumentException("Cookie name contains an invalid char: " + name.charAt(pos));
39              }
40  
41              CharSequence unwrappedValue = unwrapValue(value);
42              if (unwrappedValue == null) {
43                  throw new IllegalArgumentException("Cookie value wrapping quotes are not balanced: " + value);
44              }
45  
46              if ((pos = firstInvalidCookieValueOctet(unwrappedValue)) >= 0) {
47                  throw new IllegalArgumentException("Cookie value contains an invalid char: " +
48                                                     unwrappedValue.charAt(pos));
49              }
50          }
51      }
52  }