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// Copyright Vespa.ai. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.security.tls;
import com.yahoo.security.SslContextBuilder;
import com.yahoo.security.X509SslContext;
import javax.net.ssl.SSLContext;
import javax.net.ssl.SSLParameters;
import java.security.PrivateKey;
import java.security.cert.X509Certificate;
import java.util.Arrays;
import java.util.List;
import java.util.Set;
import java.util.logging.Level;
import java.util.logging.Logger;
/**
* A static {@link TlsContext}
*
* @author bjorncs
*/
public class DefaultTlsContext implements TlsContext {
private static final Logger log = Logger.getLogger(DefaultTlsContext.class.getName());
private final X509SslContext sslContext;
private final String[] validCiphers;
private final String[] validProtocols;
private final PeerAuthentication peerAuthentication;
public static DefaultTlsContext of(X509SslContext sslContext, PeerAuthentication peerAuthentication) {
return new DefaultTlsContext(sslContext, TlsContext.ALLOWED_CIPHER_SUITES, TlsContext.ALLOWED_PROTOCOLS, peerAuthentication);
}
public static DefaultTlsContext of(
List<X509Certificate> certificates, PrivateKey privateKey, List<X509Certificate> caCertificates,
AuthorizedPeers authorizedPeers, AuthorizationMode mode, PeerAuthentication peerAuthentication,
HostnameVerification hostnameVerification) {
var ctx = createSslContext(certificates, privateKey, caCertificates, authorizedPeers, mode, hostnameVerification);
return of(ctx, peerAuthentication);
}
public static DefaultTlsContext of(
X509SslContext sslContext, Set<String> acceptedCiphers, Set<String> acceptedProtocols,
PeerAuthentication peerAuthentication) {
return new DefaultTlsContext(sslContext, acceptedCiphers, acceptedProtocols, peerAuthentication);
}
private DefaultTlsContext(X509SslContext sslContext, Set<String> acceptedCiphers, Set<String> acceptedProtocols,
PeerAuthentication peerAuthentication) {
this.sslContext = sslContext;
this.peerAuthentication = peerAuthentication;
this.validCiphers = getAllowedCiphers(sslContext.context(), acceptedCiphers);
this.validProtocols = getAllowedProtocols(sslContext.context(), acceptedProtocols);
}
private static String[] getAllowedCiphers(SSLContext sslContext, Set<String> acceptedCiphers) {
Set<String> supportedCiphers = TlsContext.getAllowedCipherSuites(sslContext);
String[] allowedCiphers = supportedCiphers.stream()
.filter(acceptedCiphers::contains)
.toArray(String[]::new);
if (allowedCiphers.length == 0) {
throw new IllegalStateException(
String.format("None of the accepted ciphers are supported (supported=%s, accepted=%s)",
supportedCiphers, acceptedCiphers));
}
log.log(Level.FINE, () -> String.format("Allowed cipher suites that are supported: %s", Arrays.asList(allowedCiphers)));
return allowedCiphers;
}
private static String[] getAllowedProtocols(SSLContext sslContext, Set<String> acceptedProtocols) {
Set<String> supportedProtocols = TlsContext.getAllowedProtocols(sslContext);
String[] allowedProtocols = supportedProtocols.stream()
.filter(acceptedProtocols::contains)
.toArray(String[]::new);
if (allowedProtocols.length == 0) {
throw new IllegalStateException(
String.format("None of the accepted protocols are supported (supported=%s, accepted=%s)",
supportedProtocols, acceptedProtocols));
}
log.log(Level.FINE, () -> String.format("Allowed protocols that are supported: %s", Arrays.toString(allowedProtocols)));
return allowedProtocols;
}
@Override
public X509SslContext sslContext() {
return sslContext;
}
@Override
public SSLParameters parameters() {
return createSslParameters();
}
private SSLParameters createSslParameters() {
SSLParameters newParameters = sslContext.context().getDefaultSSLParameters();
newParameters.setCipherSuites(validCiphers);
newParameters.setProtocols(validProtocols);
switch (peerAuthentication) {
case WANT:
newParameters.setWantClientAuth(true);
break;
case NEED:
newParameters.setNeedClientAuth(true);
break;
case DISABLED:
break;
default:
throw new UnsupportedOperationException("Unknown peer authentication: " + peerAuthentication);
}
return newParameters;
}
private static X509SslContext createSslContext(
List<X509Certificate> certificates, PrivateKey privateKey, List<X509Certificate> caCertificates,
AuthorizedPeers authorizedPeers, AuthorizationMode mode, HostnameVerification hostnameVerification) {
SslContextBuilder builder = new SslContextBuilder();
if (!certificates.isEmpty()) {
builder.withKeyStore(privateKey, certificates);
}
if (!caCertificates.isEmpty()) {
builder.withTrustStore(caCertificates);
}
return builder.withTrustManagerFactory(truststore ->
new PeerAuthorizerTrustManager(authorizedPeers, mode, hostnameVerification, truststore))
.buildContext();
}
}
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