serenity/AK/IPv4Address.h

#pragma once

#include <AK/AKString.h>
#include <AK/NetworkOrdered.h>

namespace AK {

class [[gnu::packed]] IPv4Address
{
public:
    IPv4Address() {}
    IPv4Address(const u8 data[4])
    {
        m_data[0] = data[0];
        m_data[1] = data[1];
        m_data[2] = data[2];
        m_data[3] = data[3];
    }
    IPv4Address(u8 a, u8 b, u8 c, u8 d)
    {
        m_data[0] = a;
        m_data[1] = b;
        m_data[2] = c;
        m_data[3] = d;
    }
    IPv4Address(NetworkOrdered<u32> address)
        : m_data_as_u32(address)
    {
    }

    u8 operator[](int i) const
    {
        ASSERT(i >= 0 && i < 4);
        return m_data[i];
    }

    String to_string() const
    {
        return String::format("%u.%u.%u.%u", m_data[0], m_data[1], m_data[2], m_data[3]);
    }

    bool operator==(const IPv4Address& other) const { return m_data_as_u32 == other.m_data_as_u32; }
    bool operator!=(const IPv4Address& other) const { return m_data_as_u32 != other.m_data_as_u32; }

private:
    union {
        u8 m_data[4];
        u32 m_data_as_u32 { 0 };
    };
};

static_assert(sizeof(IPv4Address) == 4);

template<>
struct Traits<IPv4Address> : public GenericTraits<IPv4Address> {
    static unsigned hash(const IPv4Address& address) { return string_hash((const char*)&address, sizeof(address)); }
    static void dump(const IPv4Address& address) { kprintf("%s", address.to_string().characters()); }
};

}

using AK::IPv4Address;