147 lines
4.4 KiB
C++
147 lines
4.4 KiB
C++
/*
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* Copyright (c) 2023, Tim Flynn <trflynn89@serenityos.org>
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* Copyright (c) 2023, Cameron Youell <cameronyouell@gmail.com>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include <AK/String.h>
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#include <LibCore/System.h>
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#include <LibFileSystem/FileSystem.h>
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#include <LibWebView/URL.h>
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#if defined(ENABLE_PUBLIC_SUFFIX)
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# include <LibWebView/PublicSuffixData.h>
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#endif
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namespace WebView {
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static Optional<URL> query_public_suffix_list(StringView url_string)
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{
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auto out = MUST(String::from_utf8(url_string));
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if (!out.contains("://"sv))
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out = MUST(String::formatted("https://{}"sv, out));
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auto url = URL::create_with_url_or_path(out.to_deprecated_string());
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if (!url.is_valid())
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return {};
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if (url.host().has<URL::IPv4Address>() || url.host().has<URL::IPv6Address>())
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return url;
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if (url.scheme() != "http"sv && url.scheme() != "https"sv)
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return url;
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if (url.host().has<String>()) {
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auto const& host = url.host().get<String>();
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if (auto public_suffix = get_public_suffix(host); public_suffix.has_value())
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return url;
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if (host.ends_with_bytes(".local"sv) || host.ends_with_bytes("localhost"sv))
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return url;
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}
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return {};
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}
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bool is_public_suffix([[maybe_unused]] StringView host)
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{
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#if defined(ENABLE_PUBLIC_SUFFIX)
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return PublicSuffixData::the()->is_public_suffix(host);
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#else
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return false;
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#endif
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}
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Optional<String> get_public_suffix([[maybe_unused]] StringView host)
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{
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#if defined(ENABLE_PUBLIC_SUFFIX)
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return MUST(PublicSuffixData::the()->get_public_suffix(host));
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#else
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return {};
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#endif
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}
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Optional<URL> sanitize_url(StringView url, Optional<StringView> search_engine, AppendTLD append_tld)
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{
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if (FileSystem::exists(url)) {
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auto path = FileSystem::real_path(url);
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if (path.is_error())
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return {};
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return URL::create_with_file_scheme(path.value().to_deprecated_string());
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}
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auto format_search_engine = [&]() -> Optional<URL> {
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if (!search_engine.has_value())
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return {};
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return MUST(String::formatted(*search_engine, URL::percent_decode(url)));
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};
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String url_buffer;
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if (append_tld == AppendTLD::Yes) {
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// FIXME: Expand the list of top level domains.
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if (!url.ends_with(".com"sv) && !url.ends_with(".net"sv) && !url.ends_with(".org"sv)) {
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url_buffer = MUST(String::formatted("{}.com", url));
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url = url_buffer;
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}
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}
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auto result = query_public_suffix_list(url);
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if (!result.has_value())
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return format_search_engine();
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return result.release_value();
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}
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static URLParts break_file_url_into_parts(URL const& url, StringView url_string)
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{
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auto scheme = url_string.substring_view(0, url.scheme().bytes_as_string_view().length() + "://"sv.length());
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auto path = url_string.substring_view(scheme.length());
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return URLParts { scheme, path, {} };
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}
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static URLParts break_web_url_into_parts(URL const& url, StringView url_string)
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{
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auto host = MUST(url.serialized_host());
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auto public_suffix = get_public_suffix(host);
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if (!public_suffix.has_value())
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return {};
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auto public_suffix_start = url_string.find(*public_suffix);
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auto public_suffix_end = public_suffix_start.value() + public_suffix->bytes_as_string_view().length();
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auto scheme_and_subdomain = url_string.substring_view(0, *public_suffix_start);
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scheme_and_subdomain = scheme_and_subdomain.trim("."sv, TrimMode::Right);
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if (auto index = scheme_and_subdomain.find_last('.'); index.has_value())
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scheme_and_subdomain = scheme_and_subdomain.substring_view(0, *index + 1);
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else
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scheme_and_subdomain = scheme_and_subdomain.substring_view(0, url.scheme().bytes_as_string_view().length() + "://"sv.length());
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auto effective_tld_plus_one = url_string.substring_view(scheme_and_subdomain.length(), public_suffix_end - scheme_and_subdomain.length());
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auto remainder = url_string.substring_view(public_suffix_end);
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return URLParts { scheme_and_subdomain, effective_tld_plus_one, remainder };
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}
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Optional<URLParts> break_url_into_parts(StringView url_string)
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{
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auto url = URL::create_with_url_or_path(url_string);
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if (!url.is_valid())
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return {};
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if (url.scheme() == "file"sv)
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return break_file_url_into_parts(url, url_string);
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if (url.scheme().is_one_of("http"sv, "https"sv, "gemini"sv))
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return break_web_url_into_parts(url, url_string);
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return {};
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}
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}
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