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https://github.com/LadybirdBrowser/ladybird.git
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6d4ba21832
Add factory functions to distinguish between when the owner of the File wants to transfer ownership to the new IPC object (adopt) or to send a copy of the same fd to the IPC peer (clone). This behavior is more intuitive than the previous behavior. Previously, an IPC::File would default to a shallow clone of the file descriptor, only *actually* calling dup(2) for the fd when encoding or it into an IPC MessageBuffer. Now the dup(2) for the fd is explicit in the clone_fd factory function.
149 lines
3.5 KiB
C++
149 lines
3.5 KiB
C++
/*
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* Copyright (c) 2020, Andreas Kling <kling@serenityos.org>
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* Copyright (c) 2021, kleines Filmröllchen <filmroellchen@serenityos.org>
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* Copyright (c) 2023, Tim Flynn <trflynn89@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/BitCast.h>
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#include <AK/ByteBuffer.h>
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#include <AK/ByteString.h>
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#include <AK/JsonObject.h>
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#include <AK/JsonValue.h>
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#include <AK/NumericLimits.h>
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#include <AK/String.h>
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#include <AK/Time.h>
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#include <LibCore/AnonymousBuffer.h>
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#include <LibCore/DateTime.h>
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#include <LibCore/Proxy.h>
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#include <LibCore/System.h>
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#include <LibIPC/Encoder.h>
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#include <LibIPC/File.h>
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#include <LibURL/URL.h>
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namespace IPC {
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ErrorOr<void> Encoder::encode_size(size_t size)
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{
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if (static_cast<u64>(size) > static_cast<u64>(NumericLimits<u32>::max()))
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return Error::from_string_literal("Container exceeds the maximum allowed size");
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return encode(static_cast<u32>(size));
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}
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template<>
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ErrorOr<void> encode(Encoder& encoder, float const& value)
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{
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return encoder.encode(bit_cast<u32>(value));
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}
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template<>
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ErrorOr<void> encode(Encoder& encoder, double const& value)
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{
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return encoder.encode(bit_cast<u64>(value));
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}
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template<>
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ErrorOr<void> encode(Encoder& encoder, String const& value)
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{
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auto bytes = value.bytes();
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TRY(encoder.encode_size(bytes.size()));
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TRY(encoder.append(bytes.data(), bytes.size()));
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return {};
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}
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template<>
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ErrorOr<void> encode(Encoder& encoder, StringView const& value)
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{
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// NOTE: Do not change this encoding without also updating LibC/netdb.cpp.
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if (value.is_null())
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return encoder.encode(NumericLimits<u32>::max());
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TRY(encoder.encode_size(value.length()));
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TRY(encoder.append(reinterpret_cast<u8 const*>(value.characters_without_null_termination()), value.length()));
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return {};
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}
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template<>
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ErrorOr<void> encode(Encoder& encoder, ByteString const& value)
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{
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return encoder.encode(value.view());
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}
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template<>
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ErrorOr<void> encode(Encoder& encoder, ByteBuffer const& value)
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{
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TRY(encoder.encode_size(value.size()));
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TRY(encoder.append(value.data(), value.size()));
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return {};
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}
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template<>
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ErrorOr<void> encode(Encoder& encoder, JsonValue const& value)
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{
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return encoder.encode(value.serialized<StringBuilder>());
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}
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template<>
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ErrorOr<void> encode(Encoder& encoder, Duration const& value)
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{
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return encoder.encode(value.to_nanoseconds());
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}
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template<>
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ErrorOr<void> encode(Encoder& encoder, UnixDateTime const& value)
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{
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return encoder.encode(value.nanoseconds_since_epoch());
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}
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template<>
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ErrorOr<void> encode(Encoder& encoder, URL::URL const& value)
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{
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return encoder.encode(value.to_byte_string());
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}
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template<>
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ErrorOr<void> encode(Encoder& encoder, File const& file)
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{
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int fd = file.take_fd();
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TRY(encoder.append_file_descriptor(fd));
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return {};
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}
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template<>
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ErrorOr<void> encode(Encoder&, Empty const&)
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{
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return {};
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}
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template<>
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ErrorOr<void> encode(Encoder& encoder, Core::AnonymousBuffer const& buffer)
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{
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TRY(encoder.encode(buffer.is_valid()));
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if (buffer.is_valid()) {
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TRY(encoder.encode_size(buffer.size()));
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TRY(encoder.encode(TRY(IPC::File::clone_fd(buffer.fd()))));
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}
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return {};
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}
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template<>
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ErrorOr<void> encode(Encoder& encoder, Core::DateTime const& datetime)
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{
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return encoder.encode(static_cast<i64>(datetime.timestamp()));
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}
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template<>
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ErrorOr<void> encode(Encoder& encoder, Core::ProxyData const& proxy)
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{
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TRY(encoder.encode(proxy.type));
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TRY(encoder.encode(proxy.host_ipv4));
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TRY(encoder.encode(proxy.port));
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return {};
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}
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}
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