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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.vespa.athenz.client.zts;
import com.yahoo.vespa.athenz.api.AthenzDomain;
import com.yahoo.vespa.athenz.api.AthenzIdentity;
import com.yahoo.vespa.athenz.api.AthenzRole;
import com.yahoo.vespa.athenz.api.AthenzService;
import com.yahoo.vespa.athenz.api.AwsRole;
import com.yahoo.vespa.athenz.api.AwsTemporaryCredentials;
import com.yahoo.vespa.athenz.api.NToken;
import com.yahoo.vespa.athenz.api.ZToken;
import com.yahoo.vespa.athenz.client.common.ClientBase;
import com.yahoo.vespa.athenz.client.zts.bindings.AwsTemporaryCredentialsResponseEntity;
import com.yahoo.vespa.athenz.client.zts.bindings.IdentityRefreshRequestEntity;
import com.yahoo.vespa.athenz.client.zts.bindings.IdentityResponseEntity;
import com.yahoo.vespa.athenz.client.zts.bindings.InstanceIdentityCredentials;
import com.yahoo.vespa.athenz.client.zts.bindings.InstanceRefreshInformation;
import com.yahoo.vespa.athenz.client.zts.bindings.InstanceRegisterInformation;
import com.yahoo.vespa.athenz.client.zts.bindings.RoleCertificateRequestEntity;
import com.yahoo.vespa.athenz.client.zts.bindings.RoleCertificateResponseEntity;
import com.yahoo.vespa.athenz.client.zts.bindings.RoleTokenResponseEntity;
import com.yahoo.vespa.athenz.client.zts.bindings.TenantDomainsResponseEntity;
import com.yahoo.vespa.athenz.client.zts.utils.IdentityCsrGenerator;
import com.yahoo.vespa.athenz.identity.ServiceIdentityProvider;
import com.yahoo.security.Pkcs10Csr;
import org.apache.http.HttpResponse;
import org.apache.http.client.methods.HttpUriRequest;
import org.apache.http.client.methods.RequestBuilder;
import javax.net.ssl.SSLContext;
import java.io.IOException;
import java.net.URI;
import java.security.KeyPair;
import java.security.cert.X509Certificate;
import java.time.Duration;
import java.util.List;
import java.util.Optional;
import java.util.function.Supplier;
import static java.util.stream.Collectors.toList;
/**
* Default implementation of {@link ZtsClient}
*
* @author bjorncs
* @author mortent
*/
public class DefaultZtsClient extends ClientBase implements ZtsClient {
private final URI ztsUrl;
private final AthenzIdentity identity;
public DefaultZtsClient(URI ztsUrl, AthenzIdentity identity, SSLContext sslContext) {
this(ztsUrl, identity, () -> sslContext);
}
public DefaultZtsClient(URI ztsUrl, ServiceIdentityProvider identityProvider) {
this(ztsUrl, identityProvider.identity(), identityProvider::getIdentitySslContext);
}
private DefaultZtsClient(URI ztsUrl, AthenzIdentity identity, Supplier<SSLContext> sslContextSupplier) {
super("vespa-zts-client", sslContextSupplier, ZtsClientException::new);
this.ztsUrl = addTrailingSlash(ztsUrl);
this.identity = identity;
}
@Override
public InstanceIdentity registerInstance(AthenzService providerIdentity,
AthenzService instanceIdentity,
String instanceId,
String attestationData,
boolean requestServiceToken,
Pkcs10Csr csr) {
InstanceRegisterInformation payload =
new InstanceRegisterInformation(providerIdentity, instanceIdentity, attestationData, csr, requestServiceToken);
HttpUriRequest request = RequestBuilder.post()
.setUri(ztsUrl.resolve("instance/"))
.setEntity(toJsonStringEntity(payload))
.build();
return execute(request, this::getInstanceIdentity);
}
@Override
public InstanceIdentity refreshInstance(AthenzService providerIdentity,
AthenzService instanceIdentity,
String instanceId,
boolean requestServiceToken,
Pkcs10Csr csr) {
InstanceRefreshInformation payload = new InstanceRefreshInformation(csr, requestServiceToken);
URI uri = ztsUrl.resolve(
String.format("instance/%s/%s/%s/%s",
providerIdentity.getFullName(),
instanceIdentity.getDomain().getName(),
instanceIdentity.getName(),
instanceId));
HttpUriRequest request = RequestBuilder.post()
.setUri(uri)
.setEntity(toJsonStringEntity(payload))
.build();
return execute(request, this::getInstanceIdentity);
}
@Override
public Identity getServiceIdentity(AthenzService identity, String keyId, Pkcs10Csr csr) {
URI uri = ztsUrl.resolve(String.format("instance/%s/%s/refresh", identity.getDomainName(), identity.getName()));
HttpUriRequest request = RequestBuilder.post()
.setUri(uri)
.setEntity(toJsonStringEntity(new IdentityRefreshRequestEntity(csr, keyId)))
.build();
return execute(request, response -> {
IdentityResponseEntity entity = readEntity(response, IdentityResponseEntity.class);
return new Identity(entity.certificate(), entity.caCertificateBundle());
});
}
@Override
public Identity getServiceIdentity(AthenzService identity, String keyId, KeyPair keyPair, String dnsSuffix) {
Pkcs10Csr csr = new IdentityCsrGenerator(dnsSuffix).generateIdentityCsr(identity, keyPair);
return getServiceIdentity(identity, keyId, csr);
}
@Override
public ZToken getRoleToken(AthenzDomain domain) {
return getRoleToken(domain, null);
}
@Override
public ZToken getRoleToken(AthenzRole athenzRole) {
return getRoleToken(athenzRole.domain(), athenzRole.roleName());
}
private ZToken getRoleToken(AthenzDomain domain, String roleName) {
URI uri = ztsUrl.resolve(String.format("domain/%s/token", domain.getName()));
RequestBuilder requestBuilder = RequestBuilder.get(uri)
.addHeader("Content-Type", "application/json");
if (roleName != null) {
requestBuilder.addParameter("role", roleName);
}
HttpUriRequest request = requestBuilder.build();
return execute(request, response -> {
RoleTokenResponseEntity roleTokenResponseEntity = readEntity(response, RoleTokenResponseEntity.class);
return roleTokenResponseEntity.token;
});
}
@Override
public X509Certificate getRoleCertificate(AthenzRole role, Pkcs10Csr csr, Duration expiry) {
RoleCertificateRequestEntity requestEntity = new RoleCertificateRequestEntity(csr, expiry);
URI uri = ztsUrl.resolve(String.format("domain/%s/role/%s/token", role.domain().getName(), role.roleName()));
HttpUriRequest request = RequestBuilder.post(uri)
.setEntity(toJsonStringEntity(requestEntity))
.build();
return execute(request, response -> {
RoleCertificateResponseEntity responseEntity = readEntity(response, RoleCertificateResponseEntity.class);
return responseEntity.certificate;
});
}
@Override
public X509Certificate getRoleCertificate(AthenzRole role, Pkcs10Csr csr) {
return getRoleCertificate(role, csr, null);
}
@Override
public List<AthenzDomain> getTenantDomains(AthenzIdentity providerIdentity, AthenzIdentity userIdentity, String roleName) {
URI uri = ztsUrl.resolve(
String.format("providerdomain/%s/user/%s", providerIdentity.getDomainName(), userIdentity.getFullName()));
HttpUriRequest request = RequestBuilder.get(uri)
.addParameter("roleName", roleName)
.addParameter("serviceName", providerIdentity.getName())
.build();
return execute(request, response -> {
TenantDomainsResponseEntity entity = readEntity(response, TenantDomainsResponseEntity.class);
return entity.tenantDomainNames.stream().map(AthenzDomain::new).collect(toList());
});
}
@Override
public AwsTemporaryCredentials getAwsTemporaryCredentials(AthenzDomain athenzDomain, AwsRole awsRole, Duration duration, String externalId) {
URI uri = ztsUrl.resolve(
String.format("domain/%s/role/%s/creds", athenzDomain.getName(), awsRole.encodedName()));
RequestBuilder requestBuilder = RequestBuilder.get(uri);
// Add optional durationSeconds and externalId parameters
Optional.ofNullable(duration).ifPresent(d -> requestBuilder.addParameter("durationSeconds", Long.toString(duration.getSeconds())));
Optional.ofNullable(externalId).ifPresent(s -> requestBuilder.addParameter("externalId", s));
HttpUriRequest request = requestBuilder.build();
return execute(request, response -> {
AwsTemporaryCredentialsResponseEntity entity = readEntity(response, AwsTemporaryCredentialsResponseEntity.class);
return entity.credentials();
});
}
private InstanceIdentity getInstanceIdentity(HttpResponse response) throws IOException {
InstanceIdentityCredentials entity = readEntity(response, InstanceIdentityCredentials.class);
return entity.getServiceToken() != null
? new InstanceIdentity(entity.getX509Certificate(), new NToken(entity.getServiceToken()))
: new InstanceIdentity(entity.getX509Certificate());
}
private static URI addTrailingSlash(URI ztsUrl) {
if (ztsUrl.getPath().endsWith("/"))
return ztsUrl;
else
return URI.create(ztsUrl.toString() + '/');
}
}
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