Examples with KerberosError org.apache.kafka.common.security.kerberos.KerberosError used on opensource projects

Example 1 with KerberosError

use of org.apache.kafka.common.security.kerberos.KerberosError in project kafka by apache.

the class SaslServerAuthenticator method handleSaslToken.

private void handleSaslToken(byte[] clientToken) throws IOException {
    if (!enableKafkaSaslAuthenticateHeaders) {
        byte[] response = saslServer.evaluateResponse(clientToken);
        if (saslServer.isComplete()) {
            reauthInfo.calcCompletionTimesAndReturnSessionLifetimeMs();
            if (reauthInfo.reauthenticating())
                reauthInfo.ensurePrincipalUnchanged(principal());
        }
        if (response != null) {
            netOutBuffer = ByteBufferSend.sizePrefixed(ByteBuffer.wrap(response));
            flushNetOutBufferAndUpdateInterestOps();
        }
    } else {
        ByteBuffer requestBuffer = ByteBuffer.wrap(clientToken);
        RequestHeader header = RequestHeader.parse(requestBuffer);
        ApiKeys apiKey = header.apiKey();
        short version = header.apiVersion();
        RequestContext requestContext = new RequestContext(header, connectionId, clientAddress(), KafkaPrincipal.ANONYMOUS, listenerName, securityProtocol, ClientInformation.EMPTY, false);
        RequestAndSize requestAndSize = requestContext.parseRequest(requestBuffer);
        if (apiKey != ApiKeys.SASL_AUTHENTICATE) {
            IllegalSaslStateException e = new IllegalSaslStateException("Unexpected Kafka request of type " + apiKey + " during SASL authentication.");
            buildResponseOnAuthenticateFailure(requestContext, requestAndSize.request.getErrorResponse(e));
            throw e;
        }
        if (!apiKey.isVersionSupported(version)) {
            // This should not normally occur since clients typically check supported versions using ApiVersionsRequest
            throw new UnsupportedVersionException("Version " + version + " is not supported for apiKey " + apiKey);
        }
        /*
             * The client sends multiple SASL_AUTHENTICATE requests, and the client is known
             * to support the required version if any one of them indicates it supports that
             * version.
             */
        if (!reauthInfo.connectedClientSupportsReauthentication)
            reauthInfo.connectedClientSupportsReauthentication = version > 0;
        SaslAuthenticateRequest saslAuthenticateRequest = (SaslAuthenticateRequest) requestAndSize.request;
        try {
            byte[] responseToken = saslServer.evaluateResponse(Utils.copyArray(saslAuthenticateRequest.data().authBytes()));
            if (reauthInfo.reauthenticating() && saslServer.isComplete())
                reauthInfo.ensurePrincipalUnchanged(principal());
            // For versions with SASL_AUTHENTICATE header, send a response to SASL_AUTHENTICATE request even if token is empty.
            byte[] responseBytes = responseToken == null ? new byte[0] : responseToken;
            long sessionLifetimeMs = !saslServer.isComplete() ? 0L : reauthInfo.calcCompletionTimesAndReturnSessionLifetimeMs();
            sendKafkaResponse(requestContext, new SaslAuthenticateResponse(new SaslAuthenticateResponseData().setErrorCode(Errors.NONE.code()).setAuthBytes(responseBytes).setSessionLifetimeMs(sessionLifetimeMs)));
        } catch (SaslAuthenticationException e) {
            buildResponseOnAuthenticateFailure(requestContext, new SaslAuthenticateResponse(new SaslAuthenticateResponseData().setErrorCode(Errors.SASL_AUTHENTICATION_FAILED.code()).setErrorMessage(e.getMessage())));
            throw e;
        } catch (SaslException e) {
            KerberosError kerberosError = KerberosError.fromException(e);
            if (kerberosError != null && kerberosError.retriable()) {
                // Handle retriable Kerberos exceptions as I/O exceptions rather than authentication exceptions
                throw e;
            } else {
                // DO NOT include error message from the `SaslException` in the client response since it may
                // contain sensitive data like the existence of the user.
                String errorMessage = "Authentication failed during " + reauthInfo.authenticationOrReauthenticationText() + " due to invalid credentials with SASL mechanism " + saslMechanism;
                buildResponseOnAuthenticateFailure(requestContext, new SaslAuthenticateResponse(new SaslAuthenticateResponseData().setErrorCode(Errors.SASL_AUTHENTICATION_FAILED.code()).setErrorMessage(errorMessage)));
                throw new SaslAuthenticationException(errorMessage, e);
            }
        }
    }
}