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// Copyright Yahoo. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.vespa.hosted.controller.restapi.filter;
import com.auth0.jwt.JWT;
import com.google.inject.Inject;
import com.yahoo.config.provision.ApplicationName;
import com.yahoo.config.provision.TenantName;
import com.yahoo.jdisc.http.filter.DiscFilterRequest;
import com.yahoo.jdisc.http.filter.security.base.JsonSecurityRequestFilterBase;
import java.security.cert.X509Certificate;
import java.time.Instant;
import java.util.Date;
import java.util.logging.Level;
import com.yahoo.restapi.Path;
import com.yahoo.vespa.athenz.api.AthenzDomain;
import com.yahoo.vespa.athenz.api.AthenzIdentity;
import com.yahoo.vespa.athenz.api.AthenzPrincipal;
import com.yahoo.vespa.athenz.client.zms.ZmsClientException;
import com.yahoo.vespa.hosted.controller.Controller;
import com.yahoo.vespa.hosted.controller.TenantController;
import com.yahoo.vespa.hosted.controller.api.integration.athenz.ApplicationAction;
import com.yahoo.vespa.hosted.controller.api.integration.athenz.AthenzClientFactory;
import com.yahoo.vespa.hosted.controller.api.role.Role;
import com.yahoo.vespa.hosted.controller.api.role.SecurityContext;
import com.yahoo.vespa.hosted.controller.athenz.impl.AthenzFacade;
import com.yahoo.vespa.hosted.controller.security.Credentials;
import com.yahoo.vespa.hosted.controller.tenant.AthenzTenant;
import com.yahoo.vespa.hosted.controller.tenant.Tenant;
import com.yahoo.yolean.Exceptions;
import java.net.URI;
import java.security.Principal;
import java.util.ArrayList;
import java.util.List;
import java.util.Optional;
import java.util.Set;
import java.util.concurrent.CopyOnWriteArraySet;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import java.util.concurrent.Future;
import java.util.concurrent.TimeUnit;
import java.util.logging.Logger;
import static com.yahoo.vespa.hosted.controller.athenz.HostedAthenzIdentities.SCREWDRIVER_DOMAIN;
/**
* Enriches the request principal with roles from Athenz, if an AthenzPrincipal is set on the request.
*
* @author jonmv
*/
public class AthenzRoleFilter extends JsonSecurityRequestFilterBase {
private static final Logger logger = Logger.getLogger(AthenzRoleFilter.class.getName());
private final AthenzFacade athenz;
private final TenantController tenants;
private final ExecutorService executor;
@Inject
public AthenzRoleFilter(AthenzClientFactory athenzClientFactory, Controller controller) {
this.athenz = new AthenzFacade(athenzClientFactory);
this.tenants = controller.tenants();
this.executor = Executors.newCachedThreadPool();
}
@Override
protected Optional<ErrorResponse> filter(DiscFilterRequest request) {
try {
Principal principal = request.getUserPrincipal();
if (principal instanceof AthenzPrincipal) {
Instant issuedAt = request.getClientCertificateChain().stream().findFirst()
.map(X509Certificate::getNotBefore)
.or(() -> Optional.ofNullable((String) request.getAttribute("okta.access-token")).map(iat -> JWT.decode(iat).getIssuedAt()))
.map(Date::toInstant)
.orElse(Instant.EPOCH);
request.setAttribute(SecurityContext.ATTRIBUTE_NAME, new SecurityContext(principal,
roles((AthenzPrincipal) principal, request.getUri()),
issuedAt));
}
}
catch (Exception e) {
logger.log(Level.INFO, () -> "Exception mapping Athenz principal to roles: " + Exceptions.toMessageString(e));
}
return Optional.empty();
}
Set<Role> roles(AthenzPrincipal principal, URI uri) throws Exception {
Path path = new Path(uri);
path.matches("/application/v4/tenant/{tenant}/{*}");
Optional<Tenant> tenant = Optional.ofNullable(path.get("tenant")).map(TenantName::from).flatMap(tenants::get);
path.matches("/application/v4/tenant/{tenant}/application/{application}/{*}");
Optional<ApplicationName> application = Optional.ofNullable(path.get("application")).map(ApplicationName::from);
AthenzIdentity identity = principal.getIdentity();
Set<Role> roleMemberships = new CopyOnWriteArraySet<>();
List<Future<?>> futures = new ArrayList<>();
futures.add(executor.submit(() -> {
if (athenz.hasHostedOperatorAccess(identity))
roleMemberships.add(Role.hostedOperator());
}));
futures.add(executor.submit(() -> {
if (athenz.hasHostedSupporterAccess(identity))
roleMemberships.add(Role.hostedSupporter());
}));
futures.add(executor.submit(() -> {
// Add all tenants that are accessible for this request
athenz.accessibleTenants(tenants.asList(), new Credentials(principal))
.forEach(accessibleTenant -> roleMemberships.add(Role.athenzTenantAdmin(accessibleTenant.name())));
}));
if ( identity.getDomain().equals(SCREWDRIVER_DOMAIN)
&& application.isPresent()
&& tenant.isPresent()
&& ! tenant.get().name().value().equals("sandbox"))
futures.add(executor.submit(() -> {
if ( tenant.get().type() == Tenant.Type.athenz
&& hasDeployerAccess(identity, ((AthenzTenant) tenant.get()).domain(), application.get()))
roleMemberships.add(Role.buildService(tenant.get().name(), application.get()));
}));
futures.add(executor.submit(() -> {
if (athenz.hasSystemFlagsAccess(identity, /*dryrun*/false))
roleMemberships.add(Role.systemFlagsDeployer());
}));
futures.add(executor.submit(() -> {
if (athenz.hasPaymentCallbackAccess(identity))
roleMemberships.add(Role.paymentProcessor());
}));
futures.add(executor.submit(() -> {
if (athenz.hasAccountingAccess(identity))
roleMemberships.add(Role.hostedAccountant());
}));
// Run last request in handler thread to avoid creating extra thread.
if (athenz.hasSystemFlagsAccess(identity, /*dryrun*/true))
roleMemberships.add(Role.systemFlagsDryrunner());
for (Future<?> future : futures)
future.get(30, TimeUnit.SECONDS);
return roleMemberships.isEmpty()
? Set.of(Role.everyone())
: Set.copyOf(roleMemberships);
}
@Override
public void deconstruct() {
try {
executor.shutdown();
if ( ! executor.awaitTermination(30, TimeUnit.SECONDS)) {
executor.shutdownNow();
if ( ! executor.awaitTermination(10, TimeUnit.SECONDS))
throw new IllegalStateException("Failed to shut down executor 40 seconds");
}
}
catch (InterruptedException e) {
throw new IllegalStateException("Interrupted while shutting down executor", e);
}
}
private boolean hasDeployerAccess(AthenzIdentity identity, AthenzDomain tenantDomain, ApplicationName application) {
try {
return athenz.hasApplicationAccess(identity,
ApplicationAction.deploy,
tenantDomain,
application);
} catch (ZmsClientException e) {
throw new RuntimeException("Failed to authorize operation: (" + e.getMessage() + ")", e);
}
}
}
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