option6_pdexclude.h

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// Copyright (C) 2016-2017 Internet Systems Consortium, Inc. ("ISC")
//
// This Source Code Form is subject to the terms of the Mozilla Public
// License, v. 2.0. If a copy of the MPL was not distributed with this
// file, You can obtain one at http://mozilla.org/MPL/2.0/.

#ifndef OPTION6_PDEXCLUDE_H
#define OPTION6_PDEXCLUDE_H

#include <asiolink/io_address.h>
#include <dhcp/option.h>
#include <boost/shared_ptr.hpp>
#include <stdint.h>

namespace isc {
namespace dhcp {

class Option6PDExclude: public Option {
public:

    Option6PDExclude(const isc::asiolink::IOAddress& delegated_prefix,
                     const uint8_t delegated_prefix_length,
                     const isc::asiolink::IOAddress& excluded_prefix,
                     const uint8_t excluded_prefix_length);

    Option6PDExclude(OptionBufferConstIter begin, OptionBufferConstIter end);

    virtual OptionPtr clone() const;

    virtual void pack(isc::util::OutputBuffer& buf) const;

    virtual void unpack(OptionBufferConstIter begin, OptionBufferConstIter end);

    virtual uint16_t len() const;

    virtual std::string toText(int indent = 0) const;

    asiolink::IOAddress
    getExcludedPrefix(const asiolink::IOAddress& delegated_prefix,
                      const uint8_t delegated_prefix_length) const;

    uint8_t getExcludedPrefixLength() const {
        return (excluded_prefix_length_);
    }

    const std::vector<uint8_t>& getExcludedPrefixSubnetID() const {
        return (subnet_id_);
    }

private:

    uint8_t getSubnetIDLength(const uint8_t delegated_prefix_length,
                              const uint8_t excluded_prefix_length) const;

    uint8_t excluded_prefix_length_;

    std::vector<uint8_t> subnet_id_;
};

typedef boost::shared_ptr<Option6PDExclude> Option6PDExcludePtr;

} // isc::dhcp namespace
} // isc namespace

#endif // OPTION6_PDEXCLUDE_H