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/*
* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#pragma once
#include <AK/AllOf.h>
#include <AK/Array.h>
#include <AK/Assertions.h>
#include <AK/Types.h>
#include <AK/Vector.h>
#ifdef KERNEL
# include <Kernel/KString.h>
#else
# include <AK/String.h>
#endif
class [[gnu::packed]] MACAddress {
static constexpr size_t s_mac_address_length = 6u;
public:
constexpr MACAddress() = default;
constexpr MACAddress(u8 a, u8 b, u8 c, u8 d, u8 e, u8 f)
{
m_data[0] = a;
m_data[1] = b;
m_data[2] = c;
m_data[3] = d;
m_data[4] = e;
m_data[5] = f;
}
constexpr ~MACAddress() = default;
constexpr u8 const& operator[](unsigned i) const
{
VERIFY(i < s_mac_address_length);
return m_data[i];
}
constexpr u8& operator[](unsigned i)
{
VERIFY(i < s_mac_address_length);
return m_data[i];
}
constexpr bool operator==(MACAddress const& other) const
{
for (auto i = 0u; i < m_data.size(); ++i) {
if (m_data[i] != other.m_data[i]) {
return false;
}
}
return true;
}
#ifdef KERNEL
ErrorOr<NonnullOwnPtr<Kernel::KString>> to_string() const
{
return Kernel::KString::formatted("{:02x}:{:02x}:{:02x}:{:02x}:{:02x}:{:02x}", m_data[0], m_data[1], m_data[2], m_data[3], m_data[4], m_data[5]);
}
#else
String to_string() const
{
return String::formatted("{:02x}:{:02x}:{:02x}:{:02x}:{:02x}:{:02x}", m_data[0], m_data[1], m_data[2], m_data[3], m_data[4], m_data[5]);
}
#endif
static Optional<MACAddress> from_string(StringView string)
{
if (string.is_null())
return {};
auto const parts = string.split_view(":");
if (parts.size() != 6)
return {};
auto a = AK::StringUtils::convert_to_uint_from_hex(parts[0]).value_or(256);
auto b = AK::StringUtils::convert_to_uint_from_hex(parts[1]).value_or(256);
auto c = AK::StringUtils::convert_to_uint_from_hex(parts[2]).value_or(256);
auto d = AK::StringUtils::convert_to_uint_from_hex(parts[3]).value_or(256);
auto e = AK::StringUtils::convert_to_uint_from_hex(parts[4]).value_or(256);
auto f = AK::StringUtils::convert_to_uint_from_hex(parts[5]).value_or(256);
if (a > 255 || b > 255 || c > 255 || d > 255 || e > 255 || f > 255)
return {};
return MACAddress(a, b, c, d, e, f);
}
constexpr bool is_zero() const
{
return all_of(m_data, [](auto const octet) { return octet == 0; });
}
void copy_to(Bytes destination) const
{
m_data.span().copy_to(destination);
}
private:
Array<u8, s_mac_address_length> m_data {};
};
static_assert(sizeof(MACAddress) == 6u);
namespace AK {
template<>
struct Traits<MACAddress> : public GenericTraits<MACAddress> {
static unsigned hash(MACAddress const& address) { return string_hash((char const*)&address, sizeof(address)); }
};
}
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