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/*
* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#pragma once
#include <AK/Endian.h>
#include <AK/LogStream.h>
#include <AK/Optional.h>
#include <AK/String.h>
#include <AK/StringView.h>
#include <AK/Vector.h>
typedef u32 in_addr_t;
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::formatted("{}.{}.{}.{}", m_data[0], m_data[1], m_data[2], m_data[3]);
}
static Optional<IPv4Address> from_string(const StringView& string)
{
if (string.is_null())
return {};
auto parts = string.split_view('.');
u32 a;
u32 b;
u32 c;
u32 d;
if (parts.size() == 1) {
a = 0;
b = 0;
c = 0;
d = parts[0].to_uint().value_or(256);
} else if (parts.size() == 2) {
a = parts[0].to_uint().value_or(256);
b = 0;
c = 0;
d = parts[1].to_uint().value_or(256);
} else if (parts.size() == 3) {
a = parts[0].to_uint().value_or(256);
b = parts[1].to_uint().value_or(256);
c = 0;
d = parts[2].to_uint().value_or(256);
} else if (parts.size() == 4) {
a = parts[0].to_uint().value_or(256);
b = parts[1].to_uint().value_or(256);
c = parts[2].to_uint().value_or(256);
d = parts[3].to_uint().value_or(256);
} else {
return {};
}
if (a > 255 || b > 255 || c > 255 || d > 255)
return {};
return IPv4Address((u8)a, (u8)b, (u8)c, (u8)d);
}
in_addr_t to_in_addr_t() const { return m_data_as_u32; }
u32 to_u32() const { return m_data_as_u32; }
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; }
bool is_zero() const
{
return m_data_as_u32 == 0;
}
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)); }
};
inline const LogStream& operator<<(const LogStream& stream, const IPv4Address& value)
{
return stream << value.to_string();
}
}
using AK::IPv4Address;
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