e8efcd82a8
Motivation: We can just use Objects.requireNonNull(...) as a replacement for ObjectUtil.checkNotNull(....) Modifications: - Use Objects.requireNonNull(...) Result: Less code to maintain.
58 lines
1.9 KiB
Java
58 lines
1.9 KiB
Java
/*
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* Copyright 2014 The Netty Project
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*
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* The Netty Project licenses this file to you under the Apache License,
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* version 2.0 (the "License"); you may not use this file except in compliance
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* with the License. You may obtain a copy of the License at:
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*/
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package io.netty.handler.ssl;
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import static java.util.Objects.requireNonNull;
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import javax.net.ssl.SSLEngine;
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import java.util.ArrayList;
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import java.util.List;
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import java.util.Set;
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/**
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* This class will filter all requested ciphers out that are not supported by the current {@link SSLEngine}.
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*/
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public final class SupportedCipherSuiteFilter implements CipherSuiteFilter {
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public static final SupportedCipherSuiteFilter INSTANCE = new SupportedCipherSuiteFilter();
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private SupportedCipherSuiteFilter() { }
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@Override
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public String[] filterCipherSuites(Iterable<String> ciphers, List<String> defaultCiphers,
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Set<String> supportedCiphers) {
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requireNonNull(defaultCiphers, "defaultCiphers");
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requireNonNull(supportedCiphers, "supportedCiphers");
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final List<String> newCiphers;
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if (ciphers == null) {
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newCiphers = new ArrayList<>(defaultCiphers.size());
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ciphers = defaultCiphers;
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} else {
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newCiphers = new ArrayList<>(supportedCiphers.size());
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}
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for (String c : ciphers) {
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if (c == null) {
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break;
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}
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if (supportedCiphers.contains(c)) {
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newCiphers.add(c);
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}
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}
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return newCiphers.toArray(new String[0]);
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}
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}
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