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58f08107b0
This is a workaround for the fact that AK::URLParser can't call into LibUnicode directly.
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> create_unicode_url(String const& url_string)
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{
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// NOTE: 1.-4. are implemented in URLParser::parse_host
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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 URLParser::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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