i2p_address.h

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// Copyright (c) 2019-2022, The Monero Project
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#pragma once

#include <boost/utility/string_ref.hpp>
#include <cstdint>
#include <string>

#include "common/expect.h"
#include "net/enums.h"
#include "net/error.h"

namespace epee
{
namespace serialization
{
    class portable_storage;
    struct section;
}
}

namespace net
{
    class i2p_address
    {
        char host_[61]; // null-terminated

        i2p_address(boost::string_ref host) noexcept;

    public:
        static constexpr std::size_t buffer_size() noexcept { return sizeof(host_); }

        static const char* unknown_str() noexcept;

        i2p_address() noexcept;

        static i2p_address unknown() noexcept { return i2p_address{}; }

        static expect<i2p_address> make(boost::string_ref address);

        bool _load(epee::serialization::portable_storage& src, epee::serialization::section* hparent);

        bool store(epee::serialization::portable_storage& dest, epee::serialization::section* hparent) const;

        // Moves and copies are currently identical

        i2p_address(const i2p_address& rhs) noexcept;
        ~i2p_address() = default;
        i2p_address& operator=(const i2p_address& rhs) noexcept;

        bool is_unknown() const noexcept;

        bool equal(const i2p_address& rhs) const noexcept;
        bool less(const i2p_address& rhs) const noexcept;

        bool is_same_host(const i2p_address& rhs) const noexcept;

        std::string str() const;

        const char* host_str() const noexcept { return host_; }

        std::uint16_t port() const noexcept { return 1; }

        static constexpr bool is_loopback() noexcept { return false; }
        static constexpr bool is_local() noexcept { return false; }

        static constexpr epee::net_utils::address_type get_type_id() noexcept
        {
            return epee::net_utils::address_type::i2p;
        }

        static constexpr epee::net_utils::zone get_zone() noexcept
        {
            return epee::net_utils::zone::i2p;
        }

        bool is_blockable() const noexcept { return !is_unknown(); }
    };

    inline bool operator==(const i2p_address& lhs, const i2p_address& rhs) noexcept
    {
        return lhs.equal(rhs);
    }

    inline bool operator!=(const i2p_address& lhs, const i2p_address& rhs) noexcept
    {
        return !lhs.equal(rhs);
    }

    inline bool operator<(const i2p_address& lhs, const i2p_address& rhs) noexcept
    {
        return lhs.less(rhs);
    }
} // net