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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.controller.athenz.impl;
import com.google.inject.Inject;
import com.yahoo.athenz.auth.Principal;
import com.yahoo.athenz.auth.impl.PrincipalAuthority;
import com.yahoo.athenz.auth.impl.SimplePrincipal;
import com.yahoo.athenz.auth.impl.SimpleServiceIdentityProvider;
import com.yahoo.athenz.auth.token.PrincipalToken;
import com.yahoo.athenz.auth.util.Crypto;
import com.yahoo.athenz.zms.ZMSClient;
import com.yahoo.athenz.zts.ZTSClient;
import com.yahoo.vespa.hosted.controller.api.integration.security.KeyService;
import com.yahoo.vespa.hosted.controller.athenz.AthenzClientFactory;
import com.yahoo.vespa.hosted.controller.athenz.NToken;
import com.yahoo.vespa.hosted.controller.athenz.ZmsClient;
import com.yahoo.vespa.hosted.controller.athenz.ZtsClient;
import com.yahoo.vespa.hosted.controller.athenz.config.AthenzConfig;
import java.security.PrivateKey;
import java.util.concurrent.TimeUnit;
import static com.yahoo.vespa.hosted.controller.athenz.AthenzUtils.USER_PRINCIPAL_DOMAIN;
/**
* @author bjorncs
*/
public class AthenzClientFactoryImpl implements AthenzClientFactory {
private final KeyService secretService;
private final AthenzConfig config;
private final AthenzPrincipalAuthority athenzPrincipalAuthority;
@Inject
public AthenzClientFactoryImpl(KeyService secretService, AthenzConfig config) {
this.secretService = secretService;
this.config = config;
this.athenzPrincipalAuthority = new AthenzPrincipalAuthority(config.principalHeaderName());
}
/**
* @return A ZMS client instance with the service identity as principal.
*/
@Override
public ZmsClient createZmsClientWithServicePrincipal() {
return new ZmsClientImpl(new ZMSClient(config.zmsUrl(), createServicePrincipal()), config);
}
/**
* @return A ZTS client instance with the service identity as principal.
*/
@Override
public ZtsClient createZtsClientWithServicePrincipal() {
return new ZtsClientImpl(new ZTSClient(config.ztsUrl(), createServicePrincipal()), config);
}
/**
* @return A ZMS client created with a dual principal representing both the tenant admin and the service identity.
*/
@Override
public ZmsClient createZmsClientWithAuthorizedServiceToken(NToken authorizedServiceToken) {
PrincipalToken signedToken = new PrincipalToken(authorizedServiceToken.getToken());
AthenzConfig.Service service = config.service();
signedToken.signForAuthorizedService(
config.domain() + "." + service.name(), service.publicKeyId(), getServicePrivateKey());
Principal dualPrincipal = SimplePrincipal.create(
USER_PRINCIPAL_DOMAIN.id(), signedToken.getName(), signedToken.getSignedToken(), athenzPrincipalAuthority);
return new ZmsClientImpl(new ZMSClient(config.zmsUrl(), dualPrincipal), config);
}
private Principal createServicePrincipal() {
AthenzConfig.Service service = config.service();
// TODO bjorncs: Cache principal token
SimpleServiceIdentityProvider identityProvider =
new SimpleServiceIdentityProvider(
athenzPrincipalAuthority, config.domain(), service.name(),
getServicePrivateKey(), service.publicKeyId(), /*tokenTimeout*/TimeUnit.HOURS.toSeconds(1));
return identityProvider.getIdentity(config.domain(), service.name());
}
private PrivateKey getServicePrivateKey() {
AthenzConfig.Service service = config.service();
String privateKey = secretService.getSecret(service.privateKeySecretName(), service.privateKeyVersion()).trim();
return Crypto.loadPrivateKey(privateKey);
}
private static class AthenzPrincipalAuthority extends PrincipalAuthority {
private final String principalHeaderName;
public AthenzPrincipalAuthority(String principalHeaderName) {
this.principalHeaderName = principalHeaderName;
}
@Override
public String getHeader() {
return principalHeaderName;
}
}
}
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