View Javadoc
1   /*
2    * Copyright 2014 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.ssl;
17  
18  import java.util.ArrayList;
19  import java.util.List;
20  import java.util.Set;
21  
22  /**
23   * This class will not do any filtering of ciphers suites.
24   */
25  public final class IdentityCipherSuiteFilter implements CipherSuiteFilter {
26      public static final IdentityCipherSuiteFilter INSTANCE = new IdentityCipherSuiteFilter();
27  
28      private IdentityCipherSuiteFilter() { }
29  
30      @Override
31      public String[] filterCipherSuites(Iterable<String> ciphers, List<String> defaultCiphers,
32              Set<String> supportedCiphers) {
33          if (ciphers == null) {
34              return defaultCiphers.toArray(new String[defaultCiphers.size()]);
35          } else {
36              List<String> newCiphers = new ArrayList<String>(supportedCiphers.size());
37              for (String c : ciphers) {
38                  if (c == null) {
39                      break;
40                  }
41                  newCiphers.add(c);
42              }
43              return newCiphers.toArray(new String[newCiphers.size()]);
44          }
45      }
46  
47  }