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AK: Add IPv6Address class

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This is the IPv6 counter part to the IPv4Address class and implements
parsing strings into a in6_addr and formatting one as a string. It
supports the address compression scheme as well as IPv4 mapped
addresses.
This commit is contained in:
Tom 2022-02-18 20:11:02 -07:00 • committed by Linus Groh
parent f235f08e6d
commit 2f0e3da142
3 changed files with 421 additions and 0 deletions
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118
Tests/AK/TestIPv6Address.cpp Normal file
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/*
* Copyright (c) 2022, the SerenityOS developers.
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <LibTest/TestCase.h>
#include <AK/Endian.h>
#include <AK/IPv6Address.h>
TEST_CASE(should_default_contructor_with_0s)
{
constexpr IPv6Address addr {};
static_assert(addr.is_zero());
EXPECT(addr.is_zero());
}
TEST_CASE(should_construct_from_c_array)
{
constexpr auto addr = [] {
u8 const a[16] = { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16 };
return IPv6Address(a);
}();
static_assert(!addr.is_zero());
EXPECT(!addr.is_zero());
}
TEST_CASE(should_get_groups_by_index)
{
constexpr IPv6Address addr({ 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16 });
static_assert(0x102 == addr[0]);
static_assert(0x304 == addr[1]);
static_assert(0x506 == addr[2]);
static_assert(0x708 == addr[3]);
static_assert(0x90a == addr[4]);
static_assert(0xb0c == addr[5]);
static_assert(0xd0e == addr[6]);
static_assert(0xf10 == addr[7]);
EXPECT_EQ(0x102, addr[0]);
EXPECT_EQ(0x304, addr[1]);
EXPECT_EQ(0x506, addr[2]);
EXPECT_EQ(0x708, addr[3]);
EXPECT_EQ(0x90a, addr[4]);
EXPECT_EQ(0xb0c, addr[5]);
EXPECT_EQ(0xd0e, addr[6]);
EXPECT_EQ(0xf10, addr[7]);
}
TEST_CASE(should_convert_to_string)
{
EXPECT_EQ("102:304:506:708:90a:b0c:d0e:f10"sv, IPv6Address({ 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16 }).to_string());
EXPECT_EQ("::"sv, IPv6Address().to_string());
EXPECT_EQ("::1"sv, IPv6Address({ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1 }).to_string());
EXPECT_EQ("1::"sv, IPv6Address({ 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }).to_string());
EXPECT_EQ("102:0:506:708:900::10"sv, IPv6Address({ 1, 2, 0, 0, 5, 6, 7, 8, 9, 0, 0, 0, 0, 0, 0, 16 }).to_string());
EXPECT_EQ("102:0:506:708:900::"sv, IPv6Address({ 1, 2, 0, 0, 5, 6, 7, 8, 9, 0, 0, 0, 0, 0, 0, 0 }).to_string());
EXPECT_EQ("::304:506:708:90a:b0c:d0e:f10"sv, IPv6Address({ 0, 0, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16 }).to_string());
EXPECT_EQ("102:304::708:90a:b0c:d0e:f10"sv, IPv6Address({ 1, 2, 3, 4, 0, 0, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16 }).to_string());
}
TEST_CASE(should_make_ipv6_address_from_string)
{
EXPECT(!IPv6Address::from_string(":::"sv).has_value());
EXPECT(!IPv6Address::from_string(":::1"sv).has_value());
EXPECT(!IPv6Address::from_string("1:::"sv).has_value());
EXPECT_EQ(IPv6Address::from_string("102:304:506:708:90a:b0c:d0e:f10"sv).value(), IPv6Address({ 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16 }));
EXPECT_EQ(IPv6Address::from_string("::"sv).value(), IPv6Address());
EXPECT_EQ(IPv6Address::from_string("::1"sv).value(), IPv6Address({ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1 }));
EXPECT_EQ(IPv6Address::from_string("1::"sv).value(), IPv6Address({ 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }));
EXPECT_EQ(IPv6Address::from_string("102:0:506:708:900::10"sv).value(), IPv6Address({ 1, 2, 0, 0, 5, 6, 7, 8, 9, 0, 0, 0, 0, 0, 0, 16 }));
EXPECT_EQ(IPv6Address::from_string("102:0:506:708:900::"sv).value(), IPv6Address({ 1, 2, 0, 0, 5, 6, 7, 8, 9, 0, 0, 0, 0, 0, 0, 0 }));
EXPECT_EQ(IPv6Address::from_string("::304:506:708:90a:b0c:d0e:f10"sv).value(), IPv6Address({ 0, 0, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16 }));
EXPECT_EQ(IPv6Address::from_string("102:304::708:90a:b0c:d0e:f10"sv).value(), IPv6Address({ 1, 2, 3, 4, 0, 0, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16 }));
}
TEST_CASE(ipv4_mapped_ipv6)
{
auto ipv4_address_to_map = IPv4Address::from_string("192.168.0.1"sv).release_value();
IPv6Address mapped_address(ipv4_address_to_map);
EXPECT(mapped_address.is_ipv4_mapped());
EXPECT_EQ(ipv4_address_to_map, mapped_address.ipv4_mapped_address().value());
EXPECT_EQ("::ffff:192.168.0.1"sv, mapped_address.to_string());
EXPECT_EQ(IPv4Address(192, 168, 1, 9), IPv6Address::from_string("::FFFF:192.168.1.9"sv).value().ipv4_mapped_address().value());
EXPECT(!IPv6Address::from_string("::abcd:192.168.1.9"sv).has_value());
}
TEST_CASE(should_make_empty_optional_from_bad_string)
{
auto const addr = IPv6Address::from_string("bad string"sv);
EXPECT(!addr.has_value());
}
TEST_CASE(should_make_empty_optional_from_out_of_range_values)
{
auto const addr = IPv6Address::from_string("::10000"sv);
EXPECT(!addr.has_value());
}
TEST_CASE(should_compare)
{
constexpr IPv6Address addr_a({ 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16 });
constexpr IPv6Address addr_b({ 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 17 });
static_assert(addr_a != addr_b);
static_assert(addr_a == addr_a);
EXPECT(addr_a != addr_b);
EXPECT(addr_a == addr_a);
}