104 lines
4.3 KiB
C++
104 lines
4.3 KiB
C++
/*
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* Copyright (c) 2022, Andrew Kaster <akaster@serenityos.org>
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* Copyright (c) 2023, Linus Groh <linusg@serenityos.org>
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* Copyright (c) 2023, Luke Wilde <lukew@serenityos.org>
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* Copyright (c) 2024, Shannon Booth <shannon@serenityos.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include <AK/Base64.h>
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#include <AK/String.h>
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#include <AK/Utf8View.h>
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#include <AK/Vector.h>
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#include <LibJS/Heap/HeapFunction.h>
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#include <LibWeb/HTML/Scripting/ExceptionReporter.h>
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#include <LibWeb/HTML/StructuredSerialize.h>
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#include <LibWeb/HTML/StructuredSerializeOptions.h>
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#include <LibWeb/HTML/UniversalGlobalScope.h>
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#include <LibWeb/HTML/Window.h>
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#include <LibWeb/Infra/Strings.h>
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#include <LibWeb/WebIDL/AbstractOperations.h>
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#include <LibWeb/WebIDL/DOMException.h>
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#include <LibWeb/WebIDL/ExceptionOr.h>
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#include <LibWeb/WebIDL/Types.h>
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namespace Web::HTML {
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UniversalGlobalScopeMixin::~UniversalGlobalScopeMixin() = default;
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// https://html.spec.whatwg.org/multipage/webappapis.html#dom-btoa
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WebIDL::ExceptionOr<String> UniversalGlobalScopeMixin::btoa(String const& data) const
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{
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auto& vm = this_impl().vm();
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auto& realm = *vm.current_realm();
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// The btoa(data) method must throw an "InvalidCharacterError" DOMException if data contains any character whose code point is greater than U+00FF.
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Vector<u8> byte_string;
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byte_string.ensure_capacity(data.bytes().size());
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for (u32 code_point : Utf8View(data)) {
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if (code_point > 0xff)
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return WebIDL::InvalidCharacterError::create(realm, "Data contains characters outside the range U+0000 and U+00FF"_string);
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byte_string.append(code_point);
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}
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// Otherwise, the user agent must convert data to a byte sequence whose nth byte is the eight-bit representation of the nth code point of data,
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// and then must apply forgiving-base64 encode to that byte sequence and return the result.
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return TRY_OR_THROW_OOM(vm, encode_base64(byte_string.span()));
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}
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// https://html.spec.whatwg.org/multipage/webappapis.html#dom-atob
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WebIDL::ExceptionOr<String> UniversalGlobalScopeMixin::atob(String const& data) const
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{
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auto& vm = this_impl().vm();
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auto& realm = *vm.current_realm();
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// 1. Let decodedData be the result of running forgiving-base64 decode on data.
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auto decoded_data = decode_base64(data);
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// 2. If decodedData is failure, then throw an "InvalidCharacterError" DOMException.
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if (decoded_data.is_error())
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return WebIDL::InvalidCharacterError::create(realm, "Input string is not valid base64 data"_string);
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// 3. Return decodedData.
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// decode_base64() returns a byte buffer. LibJS uses UTF-8 for strings. Use isomorphic decoding to convert bytes to UTF-8.
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return Infra::isomorphic_decode(decoded_data.value());
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}
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// https://html.spec.whatwg.org/multipage/timers-and-user-prompts.html#dom-queuemicrotask
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void UniversalGlobalScopeMixin::queue_microtask(WebIDL::CallbackType& callback)
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{
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auto& vm = this_impl().vm();
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auto& realm = *vm.current_realm();
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JS::GCPtr<DOM::Document> document;
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if (is<Window>(this_impl()))
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document = &static_cast<Window&>(this_impl()).associated_document();
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// The queueMicrotask(callback) method must queue a microtask to invoke callback, and if callback throws an exception, report the exception.
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HTML::queue_a_microtask(document, JS::create_heap_function(realm.heap(), [&callback, &realm] {
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auto result = WebIDL::invoke_callback(callback, {});
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if (result.is_error())
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HTML::report_exception(result, realm);
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}));
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}
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// https://html.spec.whatwg.org/multipage/structured-data.html#dom-structuredclone
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WebIDL::ExceptionOr<JS::Value> UniversalGlobalScopeMixin::structured_clone(JS::Value value, StructuredSerializeOptions const& options) const
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{
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auto& vm = this_impl().vm();
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(void)options;
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// 1. Let serialized be ? StructuredSerializeWithTransfer(value, options["transfer"]).
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// FIXME: Use WithTransfer variant of the AO
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auto serialized = TRY(structured_serialize(vm, value));
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// 2. Let deserializeRecord be ? StructuredDeserializeWithTransfer(serialized, this's relevant realm).
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// FIXME: Use WithTransfer variant of the AO
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auto deserialized = TRY(structured_deserialize(vm, serialized, relevant_realm(this_impl()), {}));
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// 3. Return deserializeRecord.[[Deserialized]].
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return deserialized;
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}
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}
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