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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.jdisc.http.filter.security.athenz;
import com.yahoo.jdisc.Response;
import com.yahoo.jdisc.handler.ContentChannel;
import com.yahoo.jdisc.handler.ReadableContentChannel;
import com.yahoo.jdisc.handler.ResponseHandler;
import com.yahoo.jdisc.http.filter.DiscFilterRequest;
import com.yahoo.jdisc.http.filter.util.FilterTestUtils;
import com.yahoo.security.KeyAlgorithm;
import com.yahoo.security.KeyUtils;
import com.yahoo.security.X509CertificateBuilder;
import com.yahoo.vespa.athenz.api.AthenzIdentity;
import com.yahoo.vespa.athenz.api.AthenzPrincipal;
import com.yahoo.vespa.athenz.api.AthenzUser;
import org.junit.jupiter.api.Test;
import javax.security.auth.x500.X500Principal;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.UncheckedIOException;
import java.math.BigInteger;
import java.security.KeyPair;
import java.security.cert.X509Certificate;
import java.time.Duration;
import java.time.Instant;
import java.util.Objects;
import static com.yahoo.jdisc.Response.Status.UNAUTHORIZED;
import static com.yahoo.security.SignatureAlgorithm.SHA256_WITH_ECDSA;
import static java.util.stream.Collectors.joining;
import static org.junit.jupiter.api.Assertions.assertEquals;
import static org.junit.jupiter.api.Assertions.assertNotNull;
import static org.junit.jupiter.api.Assertions.assertNull;
import static org.junit.jupiter.api.Assertions.assertTrue;
/**
* @author bjorncs
*/
public class AthenzPrincipalFilterTest {
private static final AthenzIdentity IDENTITY = AthenzUser.fromUserId("bob");
private static final X509Certificate CERTIFICATE = createSelfSignedCertificate(IDENTITY);
@Test
void missing_certificate_is_unauthorized() {
DiscFilterRequest request = FilterTestUtils.newRequestBuilder().build();
ResponseHandlerMock responseHandler = new ResponseHandlerMock();
AthenzPrincipalFilter filter = createFilter(false);
filter.filter(request, responseHandler);
assertUnauthorized(request, responseHandler, "Unable to authenticate Athenz identity");
}
@Test
void certificate_is_accepted() {
DiscFilterRequest request = FilterTestUtils.newRequestBuilder().withClientCertificate(CERTIFICATE).build();
ResponseHandlerMock responseHandler = new ResponseHandlerMock();
AthenzPrincipalFilter filter = createFilter(false);
filter.filter(request, responseHandler);
AthenzPrincipal expectedPrincipal = new AthenzPrincipal(IDENTITY);
assertAuthenticated(request, expectedPrincipal);
}
private void assertAuthenticated(DiscFilterRequest request, AthenzPrincipal expectedPrincipal) {
assertEquals(expectedPrincipal, request.getUserPrincipal());
assertEquals(expectedPrincipal, request.getAttribute(AthenzPrincipalFilter.RESULT_PRINCIPAL));
}
@Test
void no_response_produced_when_passthrough_mode_is_enabled() {
DiscFilterRequest request = FilterTestUtils.newRequestBuilder().build();
ResponseHandlerMock responseHandler = new ResponseHandlerMock();
AthenzPrincipalFilter filter = createFilter(true);
filter.filter(request, responseHandler);
assertNull(responseHandler.response);
}
private AthenzPrincipalFilter createFilter(boolean passthroughModeEnabled) {
return new AthenzPrincipalFilter(passthroughModeEnabled);
}
private static void assertUnauthorized(DiscFilterRequest request, ResponseHandlerMock responseHandler, String expectedMessageSubstring) {
assertNotNull(responseHandler.response);
assertEquals(UNAUTHORIZED, responseHandler.response.getStatus());
assertTrue(responseHandler.getResponseContent().contains(expectedMessageSubstring));
assertEquals(UNAUTHORIZED, request.getAttribute(AthenzPrincipalFilter.RESULT_ERROR_CODE_ATTRIBUTE));
}
private static class ResponseHandlerMock implements ResponseHandler {
public Response response;
public ReadableContentChannel contentChannel;
@Override
public ContentChannel handleResponse(Response r) {
response = Objects.requireNonNull(r);
contentChannel = new ReadableContentChannel();
return contentChannel;
}
public String getResponseContent() {
try (BufferedReader br = new BufferedReader(new InputStreamReader(contentChannel.toStream()))) {
return br.lines().collect(joining(System.lineSeparator()));
} catch (IOException e) {
throw new UncheckedIOException(e);
}
}
}
private static X509Certificate createSelfSignedCertificate(AthenzIdentity identity) {
KeyPair keyPair = KeyUtils.generateKeypair(KeyAlgorithm.EC, 256);
X500Principal x500Name = new X500Principal("CN="+ identity.getFullName());
Instant now = Instant.now();
return X509CertificateBuilder
.fromKeypair(keyPair, x500Name, now, now.plus(Duration.ofDays(30)), SHA256_WITH_ECDSA, BigInteger.ONE)
.build();
}
}
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