option6_iaprefix.h

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// Copyright (C) 2013-2017 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_IAPREFIX_H
#define OPTION6_IAPREFIX_H

#include <asiolink/io_address.h>
#include <dhcp/option6_iaaddr.h>
#include <dhcp/option.h>

namespace isc {
namespace dhcp {


class Option6IAPrefix : public Option6IAAddr {

public:
    static const size_t OPTION6_IAPREFIX_LEN = 25;

    Option6IAPrefix(uint16_t type, const isc::asiolink::IOAddress& addr,
                    uint8_t prefix_length, uint32_t preferred, uint32_t valid);

    Option6IAPrefix(uint32_t type, OptionBuffer::const_iterator begin,
                    OptionBuffer::const_iterator end);

    virtual OptionPtr clone() const;

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

    virtual void unpack(OptionBufferConstIter begin,
                        OptionBufferConstIter end);

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

    void setPrefix(const isc::asiolink::IOAddress& prefix,
                   uint8_t length) { addr_ = prefix; prefix_len_ = length; }

    uint8_t getLength() const { return prefix_len_; }

    virtual uint16_t len() const;

private:

    void mask(OptionBuffer::const_iterator begin,
              OptionBuffer::const_iterator end,
              const uint8_t len,
              OptionBuffer& output_address) const;

    uint8_t prefix_len_;
};

typedef boost::shared_ptr<Option6IAPrefix> Option6IAPrefixPtr;

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

#endif // OPTION_IAPREFIX_H