e800605ad3
This URL library ends up being a relatively fundamental base library of the system, as LibCore depends on LibURL. This change has two main benefits: * Moving AK back more towards being an agnostic library that can be used between the kernel and userspace. URL has never really fit that description - and is not used in the kernel. * URL _should_ depend on LibUnicode, as it needs punnycode support. However, it's not really possible to do this inside of AK as it can't depend on any external library. This change brings us a little closer to being able to do that, but unfortunately we aren't there quite yet, as the code generators depend on LibCore.
57 lines
2.1 KiB
C++
57 lines
2.1 KiB
C++
/*
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* Copyright (c) 2023, Simon Wanner <simon@skyrising.xyz>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include <LibUnicode/IDNA.h>
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#include <LibUnicode/URL.h>
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namespace Unicode {
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// https://url.spec.whatwg.org/#concept-domain-to-ascii
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static ErrorOr<String> domain_to_ascii(StringView domain, bool be_strict)
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{
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// 1. Let result be the result of running Unicode ToASCII with domain_name set to domain, UseSTD3ASCIIRules set to beStrict, CheckHyphens set to false, CheckBidi set to true, CheckJoiners set to true, Transitional_Processing set to false, and VerifyDnsLength set to beStrict. [UTS46]
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// 2. If result is a failure value, domain-to-ASCII validation error, return failure.
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Unicode::IDNA::ToAsciiOptions const options {
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Unicode::IDNA::CheckHyphens::No,
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Unicode::IDNA::CheckBidi::Yes,
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Unicode::IDNA::CheckJoiners::Yes,
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be_strict ? Unicode::IDNA::UseStd3AsciiRules::Yes : Unicode::IDNA::UseStd3AsciiRules::No,
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Unicode::IDNA::TransitionalProcessing::No,
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be_strict ? Unicode::IDNA::VerifyDnsLength::Yes : Unicode::IDNA::VerifyDnsLength::No
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};
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auto result = TRY(Unicode::IDNA::to_ascii(Utf8View(domain), options));
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// 3. If result is the empty string, domain-to-ASCII validation error, return failure.
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if (result.is_empty())
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return Error::from_string_literal("Empty domain");
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// 4. Return result.
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return result;
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}
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// https://url.spec.whatwg.org/#concept-host-parser
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ErrorOr<URL::URL> create_unicode_url(String const& url_string)
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{
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// NOTE: 1.-4. are implemented in URL::Parser::parse_host
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URL::URL url = url_string;
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if (!url.is_valid() || !url.host().has<String>())
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return url;
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auto& domain = url.host().get<String>();
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if (domain.is_empty())
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return url;
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// 5. Let asciiDomain be the result of running domain to ASCII with domain and false.
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// 6. If asciiDomain is failure, then return failure.
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auto ascii_domain = TRY(domain_to_ascii(domain.bytes_as_string_view(), false));
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// FIXME: Reimplement 7. or call into URL::Parser::parse_host using ascii_domain (8. & 9. do not apply)
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url.set_host(ascii_domain);
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return url;
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}
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}
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