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https://issues.apache.org/jira/browse/DRILL-4280?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15803150#comment-15803150
 ] 

ASF GitHub Bot commented on DRILL-4280:
---------------------------------------

Github user sohami commented on a diff in the pull request:

    https://github.com/apache/drill/pull/578#discussion_r94880079
  
    --- Diff: contrib/native/client/src/clientlib/saslAuthenticatorImpl.cpp ---
    @@ -0,0 +1,207 @@
    +/*
    + * Licensed to the Apache Software Foundation (ASF) under one
    + * or more contributor license agreements.  See the NOTICE file
    + * distributed with this work for additional information
    + * regarding copyright ownership.  The ASF licenses this file
    + * to you under the Apache License, Version 2.0 (the
    + * "License"); you may not use this file except in compliance
    + * with the License.  You may obtain a copy of the License at
    + *
    + * http://www.apache.org/licenses/LICENSE-2.0
    + *
    + * Unless required by applicable law or agreed to in writing, software
    + * distributed under the License is distributed on an "AS IS" BASIS,
    + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    + * See the License for the specific language governing permissions and
    + * limitations under the License.
    + */
    +
    +#include <vector>
    +#include <boost/algorithm/string.hpp>
    +#include <boost/assign.hpp>
    +#include "saslAuthenticatorImpl.hpp"
    +
    +#include "drillClientImpl.hpp"
    +#include "logger.hpp"
    +
    +namespace Drill {
    +
    +#define DEFAULT_SERVICE_NAME "drill"
    +
    +#define KERBEROS_SIMPLE_NAME "kerberos"
    +#define KERBEROS_SASL_NAME "gssapi"
    +#define PLAIN_NAME "plain"
    +
    +const std::map<std::string, std::string> 
SaslAuthenticatorImpl::MECHANISM_MAPPING = boost::assign::map_list_of
    +    (KERBEROS_SIMPLE_NAME, KERBEROS_SASL_NAME)
    +    (PLAIN_NAME, PLAIN_NAME)
    +;
    +
    +boost::mutex SaslAuthenticatorImpl::s_mutex;
    +bool SaslAuthenticatorImpl::s_initialized = false;
    +
    +SaslAuthenticatorImpl::SaslAuthenticatorImpl(const DrillUserProperties* 
const properties) :
    +    m_properties(properties), m_pConnection(NULL), m_secret(NULL) {
    +
    +    if (!s_initialized) {
    +        boost::lock_guard<boost::mutex> 
lock(SaslAuthenticatorImpl::s_mutex);
    +        if (!s_initialized) {
    +            s_initialized = true;
    +
    +            // set plugin path if provided
    +            if (DrillClientConfig::getSaslPluginPath()) {
    --- End diff --
    
    What happens if sasl plugin path is not provided ? As per sas_client_init 
doc it will return the result code like below. We should handle the return code 
properly.
    
    /* initialize the SASL client drivers
     *  callbacks      -- base callbacks for all client connections
     * returns:
     *  SASL_OK        -- Success
     *  SASL_NOMEM     -- Not enough memory
     *  SASL_BADVERS   -- Mechanism version mismatch
     *  SASL_BADPARAM  -- error in config file
     *  SASL_NOMECH    -- No mechanisms available
     *  ...
     */
    
    int sasl_client_init(const sasl_callback_t *callbacks)
    {


> Kerberos Authentication
> -----------------------
>
>                 Key: DRILL-4280
>                 URL: https://issues.apache.org/jira/browse/DRILL-4280
>             Project: Apache Drill
>          Issue Type: Improvement
>            Reporter: Keys Botzum
>            Assignee: Sudheesh Katkam
>              Labels: security
>
> Drill should support Kerberos based authentication from clients. This means 
> that both the ODBC and JDBC drivers as well as the web/REST interfaces should 
> support inbound Kerberos. For Web this would most likely be SPNEGO while for 
> ODBC and JDBC this will be more generic Kerberos.
> Since Hive and much of Hadoop supports Kerberos there is a potential for a 
> lot of reuse of ideas if not implementation.
> Note that this is related to but not the same as 
> https://issues.apache.org/jira/browse/DRILL-3584 



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