77 lines
2.8 KiB
Java
77 lines
2.8 KiB
Java
/**
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*
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* Copyright 2015-2016 Florian Schmaus
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* 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,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package org.jivesoftware.smack.util.dns.minidns;
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import java.io.IOException;
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import java.security.KeyManagementException;
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import java.security.SecureRandom;
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import java.security.cert.CertificateException;
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import java.util.logging.Level;
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import java.util.logging.Logger;
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import javax.net.ssl.KeyManager;
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import javax.net.ssl.SSLContext;
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import javax.net.ssl.SSLSocket;
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import javax.net.ssl.TrustManager;
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import javax.net.ssl.X509TrustManager;
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import org.jivesoftware.smack.util.dns.SmackDaneVerifier;
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import de.measite.minidns.dane.DaneVerifier;
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import de.measite.minidns.dane.ExpectingTrustManager;
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public class MiniDnsDaneVerifier implements SmackDaneVerifier {
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private static final Logger LOGGER = Logger.getLogger(MiniDnsDaneVerifier.class.getName());
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private static final DaneVerifier VERIFIER = new DaneVerifier();
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private ExpectingTrustManager expectingTrustManager;
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// Package protected constructor. Use MiniDnsDane.newInstance() to create the verifier.
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MiniDnsDaneVerifier() {
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}
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@Override
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public void init(SSLContext context, KeyManager[] km, X509TrustManager tm, SecureRandom random) throws KeyManagementException {
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if (expectingTrustManager != null) {
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throw new IllegalStateException("DaneProvider was initialized before. Use newInstance() instead.");
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}
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expectingTrustManager = new ExpectingTrustManager(tm);
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context.init(km, new TrustManager[]{expectingTrustManager}, random);
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}
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@Override
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public void finish(SSLSocket sslSocket) throws CertificateException {
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if (VERIFIER.verify(sslSocket)) {
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// DANE verification was the only requirement according to the TLSA RR. We can return here.
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return;
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}
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// DANE verification was successful, but according to the TLSA RR we also must perform PKIX validation.
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if (expectingTrustManager.hasException()) {
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// PKIX validation has failed. Throw an exception but close the socket first.
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try {
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sslSocket.close();
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} catch (IOException e) {
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LOGGER.log(Level.FINER, "Closing TLS socket failed", e);
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}
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throw expectingTrustManager.getException();
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}
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}
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}
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