Examples with RequestContext org.apache.kafka.common.requests.RequestContext used on opensource projects

Example 1 with RequestContext

use of org.apache.kafka.common.requests.RequestContext in project apache-kafka-on-k8s by banzaicloud.

the class SaslServerAuthenticator method handleSaslToken.

private void handleSaslToken(byte[] clientToken) throws IOException {
    if (!enableKafkaSaslAuthenticateHeaders) {
        byte[] response = saslServer.evaluateResponse(clientToken);
        if (response != null) {
            netOutBuffer = new NetworkSend(connectionId, 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);
        RequestAndSize requestAndSize = requestContext.parseRequest(requestBuffer);
        if (apiKey != ApiKeys.SASL_AUTHENTICATE) {
            IllegalSaslStateException e = new IllegalSaslStateException("Unexpected Kafka request of type " + apiKey + " during SASL authentication.");
            sendKafkaResponse(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);
        }
        SaslAuthenticateRequest saslAuthenticateRequest = (SaslAuthenticateRequest) requestAndSize.request;
        try {
            byte[] responseToken = saslServer.evaluateResponse(Utils.readBytes(saslAuthenticateRequest.saslAuthBytes()));
            // For versions with SASL_AUTHENTICATE header, send a response to SASL_AUTHENTICATE request even if token is empty.
            ByteBuffer responseBuf = responseToken == null ? EMPTY_BUFFER : ByteBuffer.wrap(responseToken);
            sendKafkaResponse(requestContext, new SaslAuthenticateResponse(Errors.NONE, null, responseBuf));
        } catch (SaslAuthenticationException | SaslException e) {
            String errorMessage = e instanceof SaslAuthenticationException ? e.getMessage() : "Authentication failed due to invalid credentials with SASL mechanism " + saslMechanism;
            sendKafkaResponse(requestContext, new SaslAuthenticateResponse(Errors.SASL_AUTHENTICATION_FAILED, errorMessage));
            throw e;
        }
    }
}

Example 2 with RequestContext

use of org.apache.kafka.common.requests.RequestContext in project apache-kafka-on-k8s by banzaicloud.

the class SaslServerAuthenticator method handleKafkaRequest.

private boolean handleKafkaRequest(byte[] requestBytes) throws IOException, AuthenticationException {
    boolean isKafkaRequest = false;
    String clientMechanism = null;
    try {
        ByteBuffer requestBuffer = ByteBuffer.wrap(requestBytes);
        RequestHeader header = RequestHeader.parse(requestBuffer);
        ApiKeys apiKey = header.apiKey();
        // following a SaslHandshakeRequest since this is not a GSSAPI client token from a Kafka 0.9.0.x client.
        if (saslState == SaslState.INITIAL_REQUEST)
            setSaslState(SaslState.HANDSHAKE_OR_VERSIONS_REQUEST);
        isKafkaRequest = true;
        // unnecessary exposure to some of the more complex schema types.
        if (apiKey != ApiKeys.API_VERSIONS && apiKey != ApiKeys.SASL_HANDSHAKE)
            throw new IllegalSaslStateException("Unexpected Kafka request of type " + apiKey + " during SASL handshake.");
        LOG.debug("Handling Kafka request {}", apiKey);
        RequestContext requestContext = new RequestContext(header, connectionId, clientAddress(), KafkaPrincipal.ANONYMOUS, listenerName, securityProtocol);
        RequestAndSize requestAndSize = requestContext.parseRequest(requestBuffer);
        if (apiKey == ApiKeys.API_VERSIONS)
            handleApiVersionsRequest(requestContext, (ApiVersionsRequest) requestAndSize.request);
        else
            clientMechanism = handleHandshakeRequest(requestContext, (SaslHandshakeRequest) requestAndSize.request);
    } catch (InvalidRequestException e) {
        if (saslState == SaslState.INITIAL_REQUEST) {
            // starting with 0x60, revert to GSSAPI for both these exceptions.
            if (LOG.isDebugEnabled()) {
                StringBuilder tokenBuilder = new StringBuilder();
                for (byte b : requestBytes) {
                    tokenBuilder.append(String.format("%02x", b));
                    if (tokenBuilder.length() >= 20)
                        break;
                }
                LOG.debug("Received client packet of length {} starting with bytes 0x{}, process as GSSAPI packet", requestBytes.length, tokenBuilder);
            }
            if (enabledMechanisms.contains(SaslConfigs.GSSAPI_MECHANISM)) {
                LOG.debug("First client packet is not a SASL mechanism request, using default mechanism GSSAPI");
                clientMechanism = SaslConfigs.GSSAPI_MECHANISM;
            } else
                throw new UnsupportedSaslMechanismException("Exception handling first SASL packet from client, GSSAPI is not supported by server", e);
        } else
            throw e;
    }
    if (clientMechanism != null) {
        createSaslServer(clientMechanism);
        setSaslState(SaslState.AUTHENTICATE);
    }
    return isKafkaRequest;
}