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437c8b1d19
When a new window is opened via window.open() with an opener (non-null), the session storage must be cloned from the opener's storage shed into the new window's storage shed. This implements the legacy-clone a traversable storage shed algorithm from the Storage spec.
67 lines
2.6 KiB
C++
67 lines
2.6 KiB
C++
/*
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* Copyright (c) 2024-2025, 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/TypeCasts.h>
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#include <LibGC/Heap.h>
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#include <LibWeb/HTML/Scripting/Environments.h>
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#include <LibWeb/HTML/Window.h>
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#include <LibWeb/StorageAPI/StorageBottle.h>
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#include <LibWeb/StorageAPI/StorageShed.h>
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namespace Web::StorageAPI {
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GC_DEFINE_ALLOCATOR(StorageShed);
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void StorageShed::visit_edges(GC::Cell::Visitor& visitor)
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{
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Base::visit_edges(visitor);
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visitor.visit(m_data);
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}
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// https://storage.spec.whatwg.org/#obtain-a-storage-shelf
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GC::Ptr<StorageShelf> StorageShed::obtain_a_storage_shelf(HTML::EnvironmentSettingsObject& environment, StorageType type)
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{
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// 1. Let key be the result of running obtain a storage key with environment.
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auto key = obtain_a_storage_key(environment);
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auto& page = as<HTML::Window>(environment.global_object()).page();
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// 2. If key is failure, then return failure.
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if (!key.has_value())
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return {};
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// 3. If shed[key] does not exist, then set shed[key] to the result of running create a storage shelf with type.
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// 4. Return shed[key].
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return m_data.ensure(key.value(), [&page, key, type, &heap = this->heap()] {
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return StorageShelf::create(heap, page, *key, type);
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});
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}
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// https://storage.spec.whatwg.org/#legacy-clone-a-traversable-storage-shed
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// To legacy-clone a traversable storage shed, given a traversable navigable A and a traversable navigable B, run these steps:
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void StorageShed::legacy_clone(StorageShed const& a_storage_shed, GC::Ref<Page> page)
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{
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// 1. For each key → shelf of A’s storage shed:
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for (auto const& [key, shelf] : a_storage_shed.m_data) {
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// 1. Let newShelf be the result of running create a storage shelf with "session".
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auto new_shelf = StorageShelf::create(heap(), page, key, StorageType::Session);
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// 2. Set newShelf’s bucket map["default"]'s bottle map["sessionStorage"]'s map to a clone of shelf’s bucket map["default"]'s bottle map["sessionStorage"]'s map.
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auto& shelf_bucket = *shelf->bucket_map().get("default"sv).value();
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auto& new_shelf_bucket = *new_shelf->bucket_map().get("default"sv).value();
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auto const& shelf_bottle = *shelf_bucket.bottle_map()[to_underlying(StorageEndpointType::SessionStorage)];
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auto& new_shelf_bottle = *new_shelf_bucket.bottle_map()[to_underlying(StorageEndpointType::SessionStorage)];
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as<SessionStorageBottle>(new_shelf_bottle).copy_map_from(static_cast<SessionStorageBottle const&>(shelf_bottle));
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// 3. Set B’s storage shed[key] to newShelf.
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m_data.set(key, new_shelf);
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}
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}
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}
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