
io.fabric8.kubernetes.client.internal.SSLUtils Maven / Gradle / Ivy
/*
* Copyright (C) 2015 Red Hat, 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 io.fabric8.kubernetes.client.internal;
import io.fabric8.kubernetes.client.Config;
import io.fabric8.kubernetes.client.KubernetesClientException;
import io.fabric8.kubernetes.client.http.TlsVersion;
import io.fabric8.kubernetes.client.utils.Utils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.io.IOException;
import java.io.InputStream;
import java.net.Socket;
import java.net.URL;
import java.security.KeyManagementException;
import java.security.KeyStore;
import java.security.KeyStoreException;
import java.security.NoSuchAlgorithmException;
import java.security.SecureRandom;
import java.security.UnrecoverableKeyException;
import java.security.cert.CertificateException;
import java.security.cert.X509Certificate;
import java.security.spec.InvalidKeySpecException;
import javax.net.ssl.HttpsURLConnection;
import javax.net.ssl.KeyManager;
import javax.net.ssl.KeyManagerFactory;
import javax.net.ssl.SSLContext;
import javax.net.ssl.SSLEngine;
import javax.net.ssl.TrustManager;
import javax.net.ssl.TrustManagerFactory;
import javax.net.ssl.X509ExtendedTrustManager;
import static io.fabric8.kubernetes.client.internal.CertUtils.createKeyStore;
import static io.fabric8.kubernetes.client.internal.CertUtils.createTrustStore;
public final class SSLUtils {
private static final Logger LOG = LoggerFactory.getLogger(SSLUtils.class);
private SSLUtils() {
//Utility
}
public static boolean isHttpsAvailable(Config config) {
HttpsURLConnection conn = null;
try {
URL url = new URL(Config.HTTPS_PROTOCOL_PREFIX + config.getMasterUrl());
conn = (HttpsURLConnection) url.openConnection();
SSLContext sslContext = SSLUtils.sslContext(config);
conn.setSSLSocketFactory(sslContext.getSocketFactory());
conn.setConnectTimeout(1000);
conn.setReadTimeout(1000);
conn.connect();
return true;
} catch (Throwable t) {
LOG.warn("SSL handshake failed. Falling back to insecure connection.");
} finally {
if (conn != null) {
conn.disconnect();
}
}
return false;
}
public static SSLContext sslContext(Config config) throws CertificateException, UnrecoverableKeyException,
NoSuchAlgorithmException, KeyStoreException, IOException, InvalidKeySpecException, KeyManagementException {
return sslContext(keyManagers(config), trustManagers(config));
}
public static SSLContext sslContext(KeyManager[] keyManagers, TrustManager[] trustManagers) {
SSLContext sslContext = null;
NoSuchAlgorithmException noSuch = null;
// v1.3 is not supported on all vms, and of course there may be later versions added.
// so try to find one starting with the latest
for (TlsVersion version : TlsVersion.values()) {
try {
sslContext = SSLContext.getInstance(version.javaName());
break;
} catch (NoSuchAlgorithmException e) {
if (noSuch == null) {
noSuch = e;
}
continue;
}
}
if (sslContext == null) {
throw KubernetesClientException.launderThrowable(noSuch);
}
try {
sslContext.init(keyManagers, trustManagers, new SecureRandom());
return sslContext;
} catch (KeyManagementException e) {
throw KubernetesClientException.launderThrowable(e);
}
}
public static TrustManager[] trustManagers(Config config)
throws CertificateException, NoSuchAlgorithmException, KeyStoreException, IOException {
return trustManagers(config.getCaCertData(), config.getCaCertFile(), config.isTrustCerts(), config.getTrustStoreFile(),
config.getTrustStorePassphrase());
}
public static TrustManager[] trustManagers(String certData, String certFile, boolean isTrustCerts, String trustStoreFile,
String trustStorePassphrase) throws CertificateException, NoSuchAlgorithmException, KeyStoreException, IOException {
TrustManagerFactory tmf = TrustManagerFactory.getInstance(TrustManagerFactory.getDefaultAlgorithm());
KeyStore trustStore = null;
if (isTrustCerts) {
return new TrustManager[] {
new X509ExtendedTrustManager() {
@Override
public void checkClientTrusted(X509Certificate[] chain, String s) {
//not needed
}
@Override
public void checkServerTrusted(X509Certificate[] chain, String s) {
//not needed
}
@Override
public X509Certificate[] getAcceptedIssuers() {
return new X509Certificate[0];
}
@Override
public void checkClientTrusted(X509Certificate[] chain, String authType, Socket socket)
throws CertificateException {
//not needed
}
@Override
public void checkServerTrusted(X509Certificate[] chain, String authType, Socket socket)
throws CertificateException {
//not needed
}
@Override
public void checkClientTrusted(X509Certificate[] chain, String authType, SSLEngine engine)
throws CertificateException {
//not needed
}
@Override
public void checkServerTrusted(X509Certificate[] chain, String authType, SSLEngine engine)
throws CertificateException {
//not needed
}
}
};
} else if (Utils.isNotNullOrEmpty(certData) || Utils.isNotNullOrEmpty(certFile)) {
trustStore = createTrustStore(certData, certFile, trustStoreFile, trustStorePassphrase);
}
tmf.init(trustStore);
return tmf.getTrustManagers();
}
public static KeyManager[] keyManagers(Config config) throws NoSuchAlgorithmException, UnrecoverableKeyException,
KeyStoreException, CertificateException, InvalidKeySpecException, IOException {
return keyManagers(config.getClientCertData(), config.getClientCertFile(), config.getClientKeyData(),
config.getClientKeyFile(), config.getClientKeyAlgo(), config.getClientKeyPassphrase(), config.getKeyStoreFile(),
config.getKeyStorePassphrase());
}
public static KeyManager[] keyManagers(String certData, String certFile, String keyData, String keyFile, String algo,
String passphrase, String keyStoreFile, String keyStorePassphrase) throws NoSuchAlgorithmException,
UnrecoverableKeyException, KeyStoreException, CertificateException, InvalidKeySpecException, IOException {
KeyManager[] keyManagers = null;
if ((Utils.isNotNullOrEmpty(certData) || Utils.isNotNullOrEmpty(certFile))
&& (Utils.isNotNullOrEmpty(keyData) || Utils.isNotNullOrEmpty(keyFile))) {
KeyStore keyStore = createKeyStore(certData, certFile, keyData, keyFile, algo, passphrase, keyStoreFile,
keyStorePassphrase);
KeyManagerFactory kmf = KeyManagerFactory.getInstance(KeyManagerFactory.getDefaultAlgorithm());
kmf.init(keyStore, passphrase.toCharArray());
keyManagers = kmf.getKeyManagers();
}
return keyManagers;
}
public static KeyManager[] keyManagers(InputStream certInputStream, InputStream keyInputStream, String algo,
String passphrase, String keyStoreFile, String keyStorePassphrase) throws NoSuchAlgorithmException,
UnrecoverableKeyException, KeyStoreException, CertificateException, InvalidKeySpecException, IOException {
KeyStore keyStore = createKeyStore(certInputStream, keyInputStream, algo, passphrase.toCharArray(), keyStoreFile,
keyStorePassphrase.toCharArray());
KeyManagerFactory kmf = KeyManagerFactory.getInstance(KeyManagerFactory.getDefaultAlgorithm());
kmf.init(keyStore, passphrase.toCharArray());
return kmf.getKeyManagers();
}
}
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