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https://github.com/LadybirdBrowser/ladybird.git
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4ea4d63008
On macOS, use Mach port messaging instead of Unix domain sockets for all IPC transport. This makes the transport capable of carrying Mach port rights as message attachments, which is a prerequisite for sending IOSurface handles over the main IPC channel (currently sent via a separate out-of-band path). It also avoids the need for the FD acknowledgement protocol that TransportSocket requires, since Mach port right transfers are atomic in the kernel. Three connection establishment patterns: - Spawned helper processes (WebContent, RequestServer, etc.) use the existing MachPortServer: the child sends its task port with a reply port, and the parent responds with a pre-created port pair. - Socket-bootstrapped connections (WebDriver, BrowserProcess) exchange Mach port names over the socket, then drop the socket. - Pre-created pairs for IPC tests and in-message transport transfer. Attachment on macOS now wraps a MachPort instead of a file descriptor, converting between the two via fileport_makeport()/fileport_makefd(). The LibIPC socket transport tests are disabled on macOS since they are socket-specific.
109 lines
3.3 KiB
C++
109 lines
3.3 KiB
C++
/*
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* Copyright (c) 2022, Daniel Ehrenberg <dan@littledan.dev>
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* Copyright (c) 2022, Andrew Kaster <akaster@serenityos.org>
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* Copyright (c) 2024, Kenneth Myhra <kennethmyhra@serenityos.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#pragma once
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#include <AK/Assertions.h>
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#include <AK/MemoryStream.h>
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#include <AK/Vector.h>
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#include <LibIPC/Decoder.h>
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#include <LibIPC/Encoder.h>
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#include <LibIPC/Message.h>
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#include <LibJS/Forward.h>
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#include <LibWeb/Export.h>
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#include <LibWeb/Forward.h>
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#include <LibWeb/HTML/StructuredSerializeTypes.h>
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#include <LibWeb/WebIDL/ExceptionOr.h>
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namespace Web::HTML {
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class WEB_API TransferDataEncoder {
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public:
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explicit TransferDataEncoder();
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explicit TransferDataEncoder(IPC::MessageBuffer&&);
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template<typename T>
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void encode(T const& value)
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{
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VERIFY(!m_buffer_has_been_taken);
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MUST(m_encoder.encode(value));
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}
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void append(SerializationRecord&&);
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void extend(Vector<TransferDataEncoder>);
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IPC::MessageBuffer const& buffer() const;
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IPC::MessageBuffer take_buffer() const;
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private:
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mutable IPC::MessageBuffer m_buffer;
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mutable bool m_buffer_has_been_taken { false };
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IPC::Encoder m_encoder;
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};
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class WEB_API TransferDataDecoder {
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public:
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explicit TransferDataDecoder(SerializationRecord const&);
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explicit TransferDataDecoder(TransferDataEncoder&&);
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template<typename T>
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T decode()
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{
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static_assert(!IsSame<T, ByteBuffer>, "Use decode_buffer to handle OOM");
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return MUST(m_decoder.decode<T>());
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}
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WebIDL::ExceptionOr<ByteBuffer> decode_buffer(JS::Realm&);
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private:
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IPC::MessageBuffer m_buffer;
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FixedMemoryStream m_stream;
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Queue<IPC::Attachment> m_attachments;
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IPC::Decoder m_decoder;
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};
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struct SerializedTransferRecord {
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SerializationRecord serialized;
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Vector<TransferDataEncoder> transfer_data_holders;
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};
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struct DeserializedTransferRecord {
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JS::Value deserialized;
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Vector<GC::Root<JS::Object>> transferred_values;
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};
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WebIDL::ExceptionOr<SerializationRecord> structured_serialize(JS::VM&, JS::Value);
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WebIDL::ExceptionOr<SerializationRecord> structured_serialize_for_storage(JS::VM&, JS::Value);
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WebIDL::ExceptionOr<SerializationRecord> structured_serialize_internal(JS::VM&, JS::Value, bool for_storage, SerializationMemory&);
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WebIDL::ExceptionOr<JS::Value> structured_deserialize(JS::VM&, SerializationRecord const&, JS::Realm&, Optional<DeserializationMemory> = {});
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WebIDL::ExceptionOr<JS::Value> structured_deserialize_internal(JS::VM&, TransferDataDecoder&, JS::Realm&, DeserializationMemory&);
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WEB_API WebIDL::ExceptionOr<SerializedTransferRecord> structured_serialize_with_transfer(JS::VM&, JS::Value, Vector<GC::Root<JS::Object>> const& transfer_list);
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WebIDL::ExceptionOr<DeserializedTransferRecord> structured_deserialize_with_transfer(SerializedTransferRecord&, JS::Realm&);
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WEB_API WebIDL::ExceptionOr<JS::Value> structured_deserialize_with_transfer_internal(TransferDataDecoder&, JS::Realm&);
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}
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namespace IPC {
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template<>
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WEB_API ErrorOr<void> encode(Encoder&, Web::HTML::TransferDataEncoder const&);
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template<>
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WEB_API ErrorOr<Web::HTML::TransferDataEncoder> decode(Decoder&);
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template<>
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ErrorOr<void> encode(Encoder&, Web::HTML::SerializedTransferRecord const&);
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template<>
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ErrorOr<Web::HTML::SerializedTransferRecord> decode(Decoder&);
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}
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