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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.jdisc.http.server.jetty;
import org.eclipse.jetty.io.EofException;
import javax.net.ssl.SSLHandshakeException;
import java.io.IOException;
import java.util.Optional;
import java.util.function.Predicate;
import java.util.regex.Pattern;
/**
* Categorizes instances of {@link SSLHandshakeException}
*
* @author bjorncs
*/
enum SslHandshakeFailure {
INCOMPATIBLE_PROTOCOLS(
MetricDefinitions.SSL_HANDSHAKE_FAILURE_INCOMPATIBLE_PROTOCOLS,
"INCOMPATIBLE_CLIENT_PROTOCOLS",
"(Client requested protocol \\S+? is not enabled or supported in server context" +
"|The client supported protocol versions \\[.+?\\] are not accepted by server preferences \\[.+?\\])"),
INCOMPATIBLE_CIPHERS(
MetricDefinitions.SSL_HANDSHAKE_FAILURE_INCOMPATIBLE_CIPHERS,
"INCOMPATIBLE_CLIENT_CIPHER_SUITES",
"no cipher suites in common"),
MISSING_CLIENT_CERT(
MetricDefinitions.SSL_HANDSHAKE_FAILURE_MISSING_CLIENT_CERT,
"MISSING_CLIENT_CERTIFICATE",
"Empty (server|client) certificate chain"),
EXPIRED_CLIENT_CERTIFICATE(
MetricDefinitions.SSL_HANDSHAKE_FAILURE_EXPIRED_CLIENT_CERT,
"EXPIRED_CLIENT_CERTIFICATE",
// Note: this pattern will match certificates with too late notBefore as well
"PKIX path validation failed: java.security.cert.CertPathValidatorException: validity check failed"),
INVALID_CLIENT_CERT(
MetricDefinitions.SSL_HANDSHAKE_FAILURE_INVALID_CLIENT_CERT, // Includes mismatch of client certificate and private key
"INVALID_CLIENT_CERTIFICATE",
"(PKIX path (building|validation) failed: .+)|(Invalid CertificateVerify signature)"),
CONNECTION_CLOSED(
MetricDefinitions.SSL_HANDSHAKE_FAILURE_CONNECTION_CLOSED,
"CONNECTION_CLOSED",
e -> e.getCause() instanceof EofException
&& e.getCause().getCause() instanceof IOException
&& "Broken pipe".equals(e.getCause().getCause().getMessage()));
private final String metricName;
private final String failureType;
private final Predicate<SSLHandshakeException> predicate;
SslHandshakeFailure(String metricName, String failureType, String messagePattern) {
this(metricName, failureType, new MessagePatternPredicate(messagePattern));
}
SslHandshakeFailure(String metricName, String failureType, Predicate<SSLHandshakeException> predicate) {
this.metricName = metricName;
this.failureType = failureType;
this.predicate = predicate;
}
String metricName() { return metricName; }
String failureType() { return failureType; }
static Optional<SslHandshakeFailure> fromSslHandshakeException(SSLHandshakeException exception) {
for (SslHandshakeFailure type : values()) {
if (type.predicate.test(exception)) return Optional.of(type);
}
return Optional.empty();
}
private static class MessagePatternPredicate implements Predicate<SSLHandshakeException> {
final Pattern pattern;
MessagePatternPredicate(String pattern) { this.pattern = Pattern.compile(pattern); }
@Override
public boolean test(SSLHandshakeException e) {
String message = e.getMessage();
if (message == null || message.isBlank()) return false;
return pattern.matcher(message).matches();
}
}
}
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