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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.vespa.athenz.tls;
import com.yahoo.vespa.athenz.api.AthenzIdentity;
import com.yahoo.vespa.athenz.utils.AthenzIdentities;
import javax.net.ssl.HostnameVerifier;
import javax.net.ssl.SSLPeerUnverifiedException;
import javax.net.ssl.SSLSession;
import java.security.cert.X509Certificate;
import java.util.Set;
import java.util.logging.Level;
import java.util.logging.Logger;
/**
* A {@link HostnameVerifier} that validates Athenz x509 certificates using the identity in the Common Name attribute.
*
* @author bjorncs
*/
public class AthenzIdentityVerifier implements HostnameVerifier {
private static final Logger log = Logger.getLogger(AthenzIdentityVerifier.class.getName());
private final Set<AthenzIdentity> allowedIdentities;
public AthenzIdentityVerifier(Set<AthenzIdentity> allowedIdentities) {
this.allowedIdentities = Set.copyOf(allowedIdentities);
}
@Override
public boolean verify(String hostname, SSLSession session) {
try {
X509Certificate cert = (X509Certificate) session.getPeerCertificates()[0];
return isTrusted(AthenzIdentities.from(cert));
} catch (SSLPeerUnverifiedException e) {
log.log(Level.WARNING, "Unverified client: " + hostname);
return false;
}
}
public boolean isTrusted(AthenzIdentity identity) {
return allowedIdentities.contains(identity);
}
}
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