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// Copyright 2017 Yahoo Holdings. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.vespa.hosted.dockerapi;
import com.github.dockerjava.api.exception.DockerClientException;
import com.github.dockerjava.core.SSLConfig;
import org.bouncycastle.asn1.ASN1ObjectIdentifier;
import org.bouncycastle.asn1.pkcs.PrivateKeyInfo;
import org.bouncycastle.cert.X509CertificateHolder;
import org.bouncycastle.cert.jcajce.JcaX509CertificateConverter;
import org.bouncycastle.jce.provider.BouncyCastleProvider;
import org.bouncycastle.openssl.PEMKeyPair;
import org.bouncycastle.openssl.PEMParser;
import org.glassfish.jersey.SslConfigurator;
import javax.net.ssl.SSLContext;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.Reader;
import java.io.StringReader;
import java.nio.file.Files;
import java.nio.file.Paths;
import java.security.KeyFactory;
import java.security.KeyStore;
import java.security.KeyStoreException;
import java.security.NoSuchAlgorithmException;
import java.security.PrivateKey;
import java.security.Security;
import java.security.cert.Certificate;
import java.security.cert.CertificateException;
import java.security.spec.InvalidKeySpecException;
import java.security.spec.PKCS8EncodedKeySpec;
import java.util.ArrayList;
import java.util.List;
import static java.util.Objects.requireNonNull;
/**
* This class is based off {@link com.github.dockerjava.core.LocalDirectorySSLConfig}, but with the ability to
* specify path to each of the certificates instead of directory path. Additionally it includes
* {@link com.github.dockerjava.core.util.CertificateUtils} because of version conflict of with
* com.google.code.findbugs.annotations
*/
public class VespaSSLConfig implements SSLConfig {
private final DockerConfig config;
public VespaSSLConfig(DockerConfig config) {
this.config = config;
}
@Override
public SSLContext getSSLContext() {
try {
Security.addProvider(new BouncyCastleProvider());
// properties acrobatics not needed for java > 1.6
String httpProtocols = System.getProperty("https.protocols");
System.setProperty("https.protocols", "TLSv1");
SslConfigurator sslConfig = SslConfigurator.newInstance(true);
if (httpProtocols != null) {
System.setProperty("https.protocols", httpProtocols);
}
String keypem = new String(Files.readAllBytes(Paths.get(config.clientKeyPath())));
String certpem = new String(Files.readAllBytes(Paths.get(config.clientCertPath())));
String capem = new String(Files.readAllBytes(Paths.get(config.caCertPath())));
sslConfig.keyStore(createKeyStore(keypem, certpem));
sslConfig.keyStorePassword("docker");
sslConfig.trustStore(createTrustStore(capem));
return sslConfig.createSSLContext();
} catch (Exception e) {
throw new DockerClientException(e.getMessage(), e);
}
}
public static KeyStore createKeyStore(final String keypem, final String certpem) throws NoSuchAlgorithmException,
IOException, CertificateException, KeyStoreException {
PrivateKey privateKey = loadPrivateKey(keypem);
requireNonNull(privateKey);
List<Certificate> privateCertificates = loadCertificates(certpem);
KeyStore keyStore = KeyStore.getInstance("JKS");
keyStore.load(null);
keyStore.setKeyEntry("docker",
privateKey,
"docker".toCharArray(),
privateCertificates.toArray(new Certificate[privateCertificates.size()])
);
return keyStore;
}
/**
* from "cert.pem" String
*/
private static List<Certificate> loadCertificates(final String certpem) throws IOException,
CertificateException {
final StringReader certReader = new StringReader(certpem);
try (BufferedReader reader = new BufferedReader(certReader)) {
return loadCertificates(reader);
}
}
/**
* "cert.pem" from reader
*/
private static List<Certificate> loadCertificates(final Reader reader) throws IOException,
CertificateException {
try (PEMParser pemParser = new PEMParser(reader)) {
List<Certificate> certificates = new ArrayList<>();
JcaX509CertificateConverter certificateConverter = new JcaX509CertificateConverter().setProvider("BC");
Object certObj = pemParser.readObject();
if (certObj instanceof X509CertificateHolder) {
X509CertificateHolder certificateHolder = (X509CertificateHolder) certObj;
certificates.add(certificateConverter.getCertificate(certificateHolder));
}
return certificates;
}
}
/**
* Return private key ("key.pem") from Reader
*/
private static PrivateKey loadPrivateKey(final Reader reader) throws IOException, NoSuchAlgorithmException {
try (PEMParser pemParser = new PEMParser(reader)) {
Object readObject = pemParser.readObject();
while (readObject != null) {
if (readObject instanceof PEMKeyPair) {
PEMKeyPair pemKeyPair = (PEMKeyPair) readObject;
PrivateKey privateKey = guessKey(pemKeyPair.getPrivateKeyInfo().getEncoded());
if (privateKey != null) {
return privateKey;
}
} else if (readObject instanceof PrivateKeyInfo) {
PrivateKeyInfo privateKeyInfo = (PrivateKeyInfo) readObject;
PrivateKey privateKey = guessKey(privateKeyInfo.getEncoded());
if (privateKey != null) {
return privateKey;
}
} else if (readObject instanceof ASN1ObjectIdentifier) {
// no idea how it can be used
final ASN1ObjectIdentifier asn1ObjectIdentifier = (ASN1ObjectIdentifier) readObject;
}
readObject = pemParser.readObject();
}
}
return null;
}
private static PrivateKey guessKey(byte[] encodedKey) throws NoSuchAlgorithmException {
//no way to know, so iterate
for (String guessFactory : new String[]{"RSA", "ECDSA"}) {
try {
KeyFactory factory = KeyFactory.getInstance(guessFactory);
PKCS8EncodedKeySpec privateKeySpec = new PKCS8EncodedKeySpec(encodedKey);
return factory.generatePrivate(privateKeySpec);
} catch (InvalidKeySpecException ignore) {
}
}
return null;
}
/**
* Return KeyPair from "key.pem"
*/
private static PrivateKey loadPrivateKey(final String keypem) throws IOException, NoSuchAlgorithmException {
try (StringReader certReader = new StringReader(keypem);
BufferedReader reader = new BufferedReader(certReader)) {
return loadPrivateKey(reader);
}
}
/**
* "ca.pem" from String
*/
public static KeyStore createTrustStore(String capem) throws IOException, CertificateException,
KeyStoreException, NoSuchAlgorithmException {
try (Reader certReader = new StringReader(capem)) {
return createTrustStore(certReader);
}
}
/**
* "ca.pem" from Reader
*/
public static KeyStore createTrustStore(final Reader certReader) throws IOException, CertificateException,
KeyStoreException, NoSuchAlgorithmException {
try (PEMParser pemParser = new PEMParser(certReader)) {
X509CertificateHolder certificateHolder = (X509CertificateHolder) pemParser.readObject();
Certificate caCertificate = new JcaX509CertificateConverter()
.setProvider("BC")
.getCertificate(certificateHolder);
KeyStore trustStore = KeyStore.getInstance("JKS");
trustStore.load(null);
trustStore.setCertificateEntry("ca", caCertificate);
return trustStore;
}
}
@Override
public boolean equals(Object o) {
if (this == o) return true;
if (o == null || getClass() != o.getClass()) return false;
VespaSSLConfig that = (VespaSSLConfig) o;
return config.equals(that.config);
}
@Override
public int hashCode() {
return config.hashCode();
}
}
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