okhttp3.tls.internal.TlsUtil Maven / Gradle / Ivy
/*
* Copyright (C) 2012 Square, Inc.
*
* 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 okhttp3.tls.internal;
import java.io.IOException;
import java.io.InputStream;
import java.net.InetAddress;
import java.net.UnknownHostException;
import java.security.GeneralSecurityException;
import java.security.KeyStore;
import java.security.cert.Certificate;
import java.security.cert.X509Certificate;
import java.util.Arrays;
import java.util.List;
import javax.net.ssl.KeyManager;
import javax.net.ssl.KeyManagerFactory;
import javax.net.ssl.TrustManager;
import javax.net.ssl.TrustManagerFactory;
import javax.net.ssl.X509KeyManager;
import javax.net.ssl.X509TrustManager;
import okhttp3.tls.HeldCertificate;
import okhttp3.tls.HandshakeCertificates;
public final class TlsUtil {
public static final char[] password = "password".toCharArray();
private static HandshakeCertificates localhost; // Lazily initialized.
private TlsUtil() {
}
/** Returns an SSL client for this host's localhost address. */
public static synchronized HandshakeCertificates localhost() {
if (localhost != null) return localhost;
try {
// Generate a self-signed cert for the server to serve and the client to trust.
HeldCertificate heldCertificate = new HeldCertificate.Builder()
.commonName("localhost")
.addSubjectAlternativeName(InetAddress.getByName("localhost").getCanonicalHostName())
.build();
localhost = new HandshakeCertificates.Builder()
.heldCertificate(heldCertificate)
.addTrustedCertificate(heldCertificate.certificate())
.build();
return localhost;
} catch (UnknownHostException e) {
throw new RuntimeException(e);
}
}
/** Returns a trust manager that trusts {@code trustedCertificates}. */
public static X509TrustManager newTrustManager(String keyStoreType,
List trustedCertificates) throws GeneralSecurityException {
KeyStore trustStore = newEmptyKeyStore(keyStoreType);
for (int i = 0; i < trustedCertificates.size(); i++) {
trustStore.setCertificateEntry("cert_" + i, trustedCertificates.get(i));
}
TrustManagerFactory factory = TrustManagerFactory.getInstance(
TrustManagerFactory.getDefaultAlgorithm());
factory.init(trustStore);
TrustManager[] result = factory.getTrustManagers();
if (result.length != 1 || !(result[0] instanceof X509TrustManager)) {
throw new IllegalStateException("Unexpected trust managers:" + Arrays.toString(result));
}
return (X509TrustManager) result[0];
}
/**
* Returns a key manager for the held certificate and its chain. Returns an empty key manager if
* {@code heldCertificate} is null.
*/
public static X509KeyManager newKeyManager(String keyStoreType, HeldCertificate heldCertificate,
X509Certificate... intermediates) throws GeneralSecurityException {
KeyStore keyStore = newEmptyKeyStore(keyStoreType);
if (heldCertificate != null) {
Certificate[] chain = new Certificate[1 + intermediates.length];
chain[0] = heldCertificate.certificate();
System.arraycopy(intermediates, 0, chain, 1, intermediates.length);
keyStore.setKeyEntry("private", heldCertificate.keyPair().getPrivate(), password, chain);
}
KeyManagerFactory factory = KeyManagerFactory.getInstance(
KeyManagerFactory.getDefaultAlgorithm());
factory.init(keyStore, password);
KeyManager[] result = factory.getKeyManagers();
if (result.length != 1 || !(result[0] instanceof X509KeyManager)) {
throw new IllegalStateException("Unexpected key managers:" + Arrays.toString(result));
}
return (X509KeyManager) result[0];
}
private static KeyStore newEmptyKeyStore(String keyStoreType) throws GeneralSecurityException {
if (keyStoreType == null) {
keyStoreType = KeyStore.getDefaultType();
}
try {
KeyStore keyStore = KeyStore.getInstance(keyStoreType);
InputStream in = null; // By convention, 'null' creates an empty key store.
keyStore.load(in, password);
return keyStore;
} catch (IOException e) {
throw new AssertionError(e);
}
}
}