spring DefaultSslInfo 源码
spring DefaultSslInfo 代码
文件路径：/spring-web/src/main/java/org/springframework/http/server/reactive/DefaultSslInfo.java
/*
* Copyright 2002-2018 the original author or authors.
*
* Licensed 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
*
* https://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 org.springframework.http.server.reactive;
import java.security.cert.Certificate;
import java.security.cert.X509Certificate;
import java.util.ArrayList;
import java.util.List;
import javax.net.ssl.SSLSession;
import org.springframework.lang.Nullable;
import org.springframework.util.Assert;
/**
* Default implementation of {@link SslInfo}.
*
* @author Rossen Stoyanchev
* @since 5.0.2
*/
final class DefaultSslInfo implements SslInfo {
@Nullable
private final String sessionId;
@Nullable
private final X509Certificate[] peerCertificates;
DefaultSslInfo(@Nullable String sessionId, X509Certificate[] peerCertificates) {
Assert.notNull(peerCertificates, "No SSL certificates");
this.sessionId = sessionId;
this.peerCertificates = peerCertificates;
}
DefaultSslInfo(SSLSession session) {
Assert.notNull(session, "SSLSession is required");
this.sessionId = initSessionId(session);
this.peerCertificates = initCertificates(session);
}
@Override
@Nullable
public String getSessionId() {
return this.sessionId;
}
@Override
@Nullable
public X509Certificate[] getPeerCertificates() {
return this.peerCertificates;
}
@Nullable
private static String initSessionId(SSLSession session) {
byte [] bytes = session.getId();
if (bytes == null) {
return null;
}
StringBuilder sb = new StringBuilder();
for (byte b : bytes) {
String digit = Integer.toHexString(b);
if (digit.length() < 2) {
sb.append('0');
}
if (digit.length() > 2) {
digit = digit.substring(digit.length() - 2);
}
sb.append(digit);
}
return sb.toString();
}
@Nullable
private static X509Certificate[] initCertificates(SSLSession session) {
Certificate[] certificates;
try {
certificates = session.getPeerCertificates();
}
catch (Throwable ex) {
return null;
}
List<X509Certificate> result = new ArrayList<>(certificates.length);
for (Certificate certificate : certificates) {
if (certificate instanceof X509Certificate) {
result.add((X509Certificate) certificate);
}
}
return (!result.isEmpty() ? result.toArray(new X509Certificate[0]) : null);
}
}
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