org.newsclub.net.unix.ssl.ValidatingX509TrustManager Maven / Gradle / Ivy
/*
* junixsocket
*
* Copyright 2009-2024 Christian Kohlschütter
*
* 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
*
* 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 org.newsclub.net.unix.ssl;
import java.security.cert.CertificateException;
import java.security.cert.X509Certificate;
import javax.net.ssl.TrustManager;
import javax.net.ssl.X509TrustManager;
/**
* A wrapping {@link X509TrustManager} that verifies each individual certificate in a chain, in
* addition to the successful validation by the wrapped {@link X509TrustManager}.
*
* This could be useful in some scenarios where self-signed certificates are being used, or where
* the upstream {@link TrustManager} can't be fully trusted.
*
* @author Christian Kohlschütter
*/
public final class ValidatingX509TrustManager extends FilterX509TrustManager {
/**
* Constructs a {@link ValidatingX509TrustManager} instance that wraps the given
* {@link X509TrustManager}.
*
* @param wrapped The wrapped trust manager.
*/
public ValidatingX509TrustManager(X509TrustManager wrapped) {
super(wrapped);
}
@Override
protected void onCertificateException(boolean checkClient, CertificateException e,
X509Certificate[] chain, String authType) throws CertificateException {
throw e; // throw to prevent certificate from being accepted
}
@Override
protected void onCertificateTrusted(boolean checkClient, X509Certificate[] chain, String authType)
throws CertificateException {
for (X509Certificate cert : chain) {
cert.checkValidity(); // check expiry as well (off by default for self-signed certs)
}
}
}