/**
 *    Copyright (C) 2018-present MongoDB, Inc.
 *
 *    This program is free software: you can redistribute it and/or modify
 *    it under the terms of the Server Side Public License, version 1,
 *    as published by MongoDB, Inc.
 *
 *    This program is distributed in the hope that it will be useful,
 *    but WITHOUT ANY WARRANTY; without even the implied warranty of
 *    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *    Server Side Public License for more details.
 *
 *    You should have received a copy of the Server Side Public License
 *    along with this program. If not, see
 *    <http://www.mongodb.com/licensing/server-side-public-license>.
 *
 *    As a special exception, the copyright holders give permission to link the
 *    code of portions of this program with the OpenSSL library under certain
 *    conditions as described in each individual source file and distribute
 *    linked combinations including the program with the OpenSSL library. You
 *    must comply with the Server Side Public License in all respects for
 *    all of the code used other than as permitted herein. If you modify file(s)
 *    with this exception, you may extend this exception to your version of the
 *    file(s), but you are not obligated to do so. If you do not wish to do so,
 *    delete this exception statement from your version. If you delete this
 *    exception statement from all source files in the program, then also delete
 *    it in the license file.
 */


#include "mongo/client/sasl_client_session.h"

namespace mongo {

class SaslClientConversation;

/**
 * Implementation of the client side of a SASL authentication conversation using the
 * native SASL implementation.
 */
class NativeSaslClientSession : public SaslClientSession {
    NativeSaslClientSession(const NativeSaslClientSession&) = delete;
    NativeSaslClientSession& operator=(const NativeSaslClientSession&) = delete;

public:
    NativeSaslClientSession();
    ~NativeSaslClientSession();

    virtual Status initialize();

    virtual Status step(StringData inputData, std::string* outputData);

    bool isSuccess() const override {
        return _success;
    }

private:
    /// Number of successfully completed conversation steps.
    int _step;

    /// See isSuccess().
    bool _success;

    /// The client side of a SASL authentication conversation.
    std::unique_ptr<SaslClientConversation> _saslConversation;
};

}  // namespace mongo