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64abc6101d
Our structured serialization implementation had its own bespoke encoder and decoder to serialize JS values. It also used a u32 buffer under the hood, which made using its structures a bit awkward. We had previously worked around its data structures in transferable streams, which nested transfers of MessagePort instances. We basically had to add hooks into the MessagePort to route to the correct transfer receiving steps, and we could not invoke the correct AOs directly as the spec dictates. We now use IPC mechanics to encode and decode data. This works because, although we are encoding JS values, we are only ultimately encoding primitive and basic AK types. The resulting data structures actually enforce that we implement transferable streams exactly as the spec is worded (I had planned to do that in a separate commit, but the fallout of this patch actually required that change).
88 lines
2.9 KiB
C++
88 lines
2.9 KiB
C++
/*
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* Copyright (c) 2023, Andrew Kaster <akaster@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 <LibCore/EventLoop.h>
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#include <WebWorker/ConnectionFromClient.h>
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#include <WebWorker/PageHost.h>
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#include <WebWorker/WorkerHost.h>
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namespace WebWorker {
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void ConnectionFromClient::close_worker()
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{
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async_did_close_worker();
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// FIXME: Invoke a worker shutdown operation that implements the spec
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m_worker_host = nullptr;
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die();
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}
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void ConnectionFromClient::die()
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{
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// FIXME: When handling multiple workers in the same process,
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// this logic needs to be smarter (only when all workers are dead, etc).
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Core::EventLoop::current().quit(0);
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}
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void ConnectionFromClient::request_file(Web::FileRequest request)
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{
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// FIXME: Route this to FSAS or browser process as appropriate instead of allowing
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// the WebWorker process filesystem access
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auto path = request.path();
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auto request_id = ++last_id;
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m_requested_files.set(request_id, move(request));
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auto file = Core::File::open(path, Core::File::OpenMode::Read);
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if (file.is_error())
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handle_file_return(file.error().code(), {}, request_id);
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else
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handle_file_return(0, IPC::File::adopt_file(file.release_value()), request_id);
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}
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ConnectionFromClient::ConnectionFromClient(NonnullOwnPtr<IPC::Transport> transport)
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: IPC::ConnectionFromClient<WebWorkerClientEndpoint, WebWorkerServerEndpoint>(*this, move(transport), 1)
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, m_page_host(PageHost::create(Web::Bindings::main_thread_vm(), *this))
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{
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}
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ConnectionFromClient::~ConnectionFromClient() = default;
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Web::Page& ConnectionFromClient::page()
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{
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return m_page_host->page();
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}
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Web::Page const& ConnectionFromClient::page() const
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{
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return m_page_host->page();
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}
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void ConnectionFromClient::start_worker(URL::URL url, Web::Bindings::WorkerType type, Web::Bindings::RequestCredentials credentials, String name, Web::HTML::TransferDataEncoder implicit_port, Web::HTML::SerializedEnvironmentSettingsObject outside_settings, Web::Bindings::AgentType agent_type)
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{
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m_worker_host = make_ref_counted<WorkerHost>(move(url), type, move(name));
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bool const is_shared = agent_type == Web::Bindings::AgentType::SharedWorker;
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VERIFY(is_shared || agent_type == Web::Bindings::AgentType::DedicatedWorker);
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// FIXME: Add an assertion that the agent_type passed here is the same that was passed at process creation to initialize_main_thread_vm()
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m_worker_host->run(page(), move(implicit_port), outside_settings, credentials, is_shared);
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}
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void ConnectionFromClient::handle_file_return(i32 error, Optional<IPC::File> file, i32 request_id)
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{
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auto file_request = m_requested_files.take(request_id);
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VERIFY(file_request.has_value());
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VERIFY(file_request.value().on_file_request_finish);
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file_request.value().on_file_request_finish(error != 0 ? Error::from_errno(error) : ErrorOr<i32> { file->take_fd() });
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}
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}
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