option_classless_static_route.h

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// Copyright (C) 2023-2024 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 OPTION_CLASSLESS_STATIC_ROUTE_H
#define OPTION_CLASSLESS_STATIC_ROUTE_H
 
#include <dhcp/dhcp4.h>
#include <dhcp/option.h>
#include <dhcp/option_data_types.h>
 
namespace isc {
namespace dhcp {
 
typedef std::tuple<asiolink::IOAddress, uint8_t, asiolink::IOAddress> StaticRouteTuple;
 
class OptionClasslessStaticRoute : public Option {
public:
    OptionClasslessStaticRoute(OptionBufferConstIter begin,
                               OptionBufferConstIter end,
                               bool convenient_notation = false);
 
    OptionPtr clone() const override;
 
    void pack(util::OutputBuffer& buf, bool check = true) const override;
 
    void unpack(OptionBufferConstIter begin, OptionBufferConstIter end) override;
 
    std::string toText(int indent = 0) const override;
 
    uint16_t len() const override;
 
private:
    std::vector<StaticRouteTuple> static_routes_;
 
    uint16_t data_len_;
 
    bool convenient_notation_;
 
    static std::vector<uint8_t> encodeDestinationDescriptor(const StaticRouteTuple& route);
 
    static uint8_t calcSignificantOctets(const uint8_t& mask_width);
 
    void calcDataLen();
 
    void parseWireData(OptionBufferConstIter begin, OptionBufferConstIter end);
 
    void parseConfigData(const std::string& config_txt);
};
 
typedef boost::shared_ptr<OptionClasslessStaticRoute> OptionClasslessStaticRoutePtr;
 
}  // namespace dhcp
}  // namespace isc
 
#endif  // OPTION_CLASSLESS_STATIC_ROUTE_H