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// Copyright 2018 Yahoo Holdings. 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.tls.authz.PeerAuthorizerTrustManager;
import com.yahoo.security.tls.policy.AuthorizedPeers;
import javax.net.ssl.SSLContext;
import javax.net.ssl.SSLEngine;
import javax.net.ssl.SSLParameters;
import java.lang.ref.WeakReference;
import java.nio.file.Path;
import java.util.HashMap;
import java.util.HashSet;
import java.util.List;
import java.util.Map;
import java.util.Set;
/**
* A {@link TlsContext} that uses the tls configuration specified in the transport security options file.
* The credentials are regularly reloaded to support short-lived certificates.
*
* @author bjorncs
*/
public class ConfigFileBasedTlsContext implements TlsContext {
private final TlsContext tlsContext;
private TlsManager tlsManager;
static private final Map<Path, WeakReference<TlsManager>> trustManagers = new HashMap<>();
private static TlsManager getOrCreateTrustManager(Path tlsOptionsConfigFile) {
synchronized (trustManagers) {
WeakReference<TlsManager> tlsManager = trustManagers.get(tlsOptionsConfigFile);
if (tlsManager == null || tlsManager.get() == null) {
TlsManager manager = new TlsManager(tlsOptionsConfigFile);
trustManagers.put(tlsOptionsConfigFile, new WeakReference<>(manager));
return manager;
}
return tlsManager.get();
}
}
public ConfigFileBasedTlsContext(Path tlsOptionsConfigFile, AuthorizationMode mode) {
this(tlsOptionsConfigFile, mode, PeerAuthentication.NEED);
}
/**
* Allows the caller to override the default peer authentication mode. This is only intended to be used in situations where
* the TLS peer authentication is enforced at a higher protocol or application layer (e.g with {@link PeerAuthentication#WANT}).
*/
public ConfigFileBasedTlsContext(Path tlsOptionsConfigFile, AuthorizationMode mode, PeerAuthentication peerAuthentication) {
tlsManager = getOrCreateTrustManager(tlsOptionsConfigFile);
this.tlsContext = createDefaultTlsContext(tlsManager.getOptions(), mode, tlsManager.getTrustManager(), tlsManager.getKeyManager(), peerAuthentication);
}
// Wrapped methods from TlsContext
@Override public SSLContext context() { return tlsContext.context(); }
@Override public SSLParameters parameters() { return tlsContext.parameters(); }
@Override public SSLEngine createSslEngine() { return tlsContext.createSslEngine(); }
@Override public SSLEngine createSslEngine(String peerHost, int peerPort) { return tlsContext.createSslEngine(peerHost, peerPort); }
private static DefaultTlsContext createDefaultTlsContext(TransportSecurityOptions options,
AuthorizationMode mode,
MutableX509TrustManager mutableTrustManager,
MutableX509KeyManager mutableKeyManager,
PeerAuthentication peerAuthentication) {
HostnameVerification hostnameVerification = options.isHostnameValidationDisabled() ? HostnameVerification.DISABLED : HostnameVerification.ENABLED;
PeerAuthorizerTrustManager authorizerTrustManager = options.getAuthorizedPeers()
.map(authorizedPeers -> new PeerAuthorizerTrustManager(authorizedPeers, mode, hostnameVerification, mutableTrustManager))
.orElseGet(() -> new PeerAuthorizerTrustManager(new AuthorizedPeers(com.yahoo.vespa.jdk8compat.Set.of()), AuthorizationMode.DISABLE, hostnameVerification, mutableTrustManager));
SSLContext sslContext = new SslContextBuilder()
.withKeyManager(mutableKeyManager)
.withTrustManager(authorizerTrustManager)
.build();
List<String> acceptedCiphers = options.getAcceptedCiphers();
Set<String> ciphers = acceptedCiphers.isEmpty() ? TlsContext.ALLOWED_CIPHER_SUITES : new HashSet<>(acceptedCiphers);
return new DefaultTlsContext(sslContext, ciphers, peerAuthentication);
}
}
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