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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.utils.ntoken;
import com.yahoo.athenz.auth.token.PrincipalToken;
import com.yahoo.vespa.athenz.api.AthenzIdentity;
import com.yahoo.vespa.athenz.api.AthenzPrincipal;
import com.yahoo.vespa.athenz.api.AthenzUser;
import com.yahoo.vespa.athenz.api.NToken;
import com.yahoo.vespa.athenz.tls.KeyAlgorithm;
import com.yahoo.vespa.athenz.tls.KeyUtils;
import com.yahoo.vespa.athenz.utils.ntoken.NTokenValidator.InvalidTokenException;
import org.junit.Rule;
import org.junit.Test;
import org.junit.rules.ExpectedException;
import java.security.KeyPair;
import java.security.PrivateKey;
import java.security.PublicKey;
import java.time.Instant;
import java.util.Optional;
import static org.junit.Assert.assertEquals;
/**
* @author bjorncs
*/
public class NTokenValidatorTest {
private static final KeyPair TRUSTED_KEY = KeyUtils.generateKeypair(KeyAlgorithm.RSA);
private static final KeyPair UNKNOWN_KEY = KeyUtils.generateKeypair(KeyAlgorithm.RSA);
private static final AthenzIdentity IDENTITY = AthenzUser.fromUserId("myuser");
@Rule
public ExpectedException exceptionRule = ExpectedException.none();
@Test
public void valid_token_is_accepted() throws InvalidTokenException {
NTokenValidator validator = new NTokenValidator(createTruststore());
NToken token = createNToken(IDENTITY, Instant.now(), TRUSTED_KEY.getPrivate(), "0");
AthenzPrincipal principal = validator.validate(token);
assertEquals("user.myuser", principal.getIdentity().getFullName());
}
@Test
public void invalid_signature_is_not_accepted() throws InvalidTokenException {
NTokenValidator validator = new NTokenValidator(createTruststore());
NToken token = createNToken(IDENTITY, Instant.now(), UNKNOWN_KEY.getPrivate(), "0");
exceptionRule.expect(InvalidTokenException.class);
exceptionRule.expectMessage("NToken is expired or has invalid signature");
validator.validate(token);
}
@Test
public void expired_token_is_not_accepted() throws InvalidTokenException {
NTokenValidator validator = new NTokenValidator(createTruststore());
NToken token = createNToken(IDENTITY, Instant.ofEpochMilli(1234) /*long time ago*/, TRUSTED_KEY.getPrivate(), "0");
exceptionRule.expect(InvalidTokenException.class);
exceptionRule.expectMessage("NToken is expired or has invalid signature");
validator.validate(token);
}
@Test
public void unknown_keyId_is_not_accepted() throws InvalidTokenException {
NTokenValidator validator = new NTokenValidator(createTruststore());
NToken token = createNToken(IDENTITY, Instant.now(), TRUSTED_KEY.getPrivate(), "unknown-key-id");
exceptionRule.expect(InvalidTokenException.class);
exceptionRule.expectMessage("NToken has an unknown keyId");
validator.validate(token);
}
private static AthenzTruststore createTruststore() {
return new AthenzTruststore() {
@Override
public Optional<PublicKey> getZmsPublicKey(String keyId) {
return keyId.equals("0") ? Optional.of(TRUSTED_KEY.getPublic()) : Optional.empty();
}
@Override
public Optional<PublicKey> getZtsPublicKey(String keyId) {
return Optional.empty();
}
};
}
private static NToken createNToken(AthenzIdentity identity, Instant issueTime, PrivateKey privateKey, String keyId) {
PrincipalToken token = new PrincipalToken.Builder("U1", identity.getDomain().getName(), identity.getName())
.keyId(keyId)
.salt("1234")
.host("host")
.ip("1.2.3.4")
.keyService("zms")
.issueTime(issueTime.getEpochSecond())
.expirationWindow(1000)
.build();
token.sign(privateKey);
return new NToken(token.getSignedToken());
}
}
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