Java tutorial
/* * Copyright 2014 The Netty Project * * The Netty Project licenses this file to you under the Apache License, * version 2.0 (the "License"); you may not use this file except in compliance * with the License. You may obtain a copy of the License at: * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the * License for the specific language governing permissions and limitations * under the License. */ package io.netty.handler.ssl; import java.util.ArrayList; import java.util.List; import java.util.Set; /** * This class will not do any filtering of ciphers suites. */ public final class IdentityCipherSuiteFilter implements CipherSuiteFilter { /** * Defaults to default ciphers when provided ciphers are null */ public static final IdentityCipherSuiteFilter INSTANCE = new IdentityCipherSuiteFilter(true); /** * Defaults to supported ciphers when provided ciphers are null */ public static final IdentityCipherSuiteFilter INSTANCE_DEFAULTING_TO_SUPPORTED_CIPHERS = new IdentityCipherSuiteFilter( false); private final boolean defaultToDefaultCiphers; private IdentityCipherSuiteFilter(boolean defaultToDefaultCiphers) { this.defaultToDefaultCiphers = defaultToDefaultCiphers; } @Override public String[] filterCipherSuites(Iterable<String> ciphers, List<String> defaultCiphers, Set<String> supportedCiphers) { if (ciphers == null) { return defaultToDefaultCiphers ? defaultCiphers.toArray(new String[0]) : supportedCiphers.toArray(new String[0]); } else { List<String> newCiphers = new ArrayList<String>(supportedCiphers.size()); for (String c : ciphers) { if (c == null) { break; } newCiphers.add(c); } return newCiphers.toArray(new String[0]); } } }