sasl_client_session.h

/*    Copyright 2012 10gen Inc.
 *
 *    Licensed 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.
 */

#pragma once

#include <boost/scoped_array.hpp>
#include <string>

#include "mongo/base/disallow_copying.h"
#include "mongo/base/status.h"
#include "mongo/base/string_data.h"
#include "mongo/client/export_macros.h"
#include "mongo/stdx/functional.h"

namespace mongo {

class SaslClientSession {
    MONGO_DISALLOW_COPYING(SaslClientSession);

public:
    typedef stdx::function<SaslClientSession*(const std::string&)> SaslClientSessionFactoryFn;
    static SaslClientSessionFactoryFn create;

    enum Parameter {
        parameterServiceName = 0,
        parameterServiceHostname,
        parameterMechanism,
        parameterUser,
        parameterPassword,
        numParameters  // Must be last
    };

    SaslClientSession();
    virtual ~SaslClientSession();

    virtual void setParameter(Parameter id, const StringData& value);

    virtual bool hasParameter(Parameter id);

    virtual StringData getParameter(Parameter id);

    virtual Status initialize() = 0;

    virtual Status step(const StringData& inputData, std::string* outputData) = 0;

    virtual bool isDone() const = 0;

private:
    struct DataBuffer {
        boost::scoped_array<char> data;
        size_t size;
    };

    DataBuffer _parameters[numParameters];
};

}  // namespace mongo