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/*
* Copyright (c) 2020, Andreas Kling <kling@serenityos.org>
* Copyright (c) 2023, Tim Flynn <trflynn89@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <AK/JsonValue.h>
#include <AK/NumericLimits.h>
#include <AK/URL.h>
#include <LibCore/AnonymousBuffer.h>
#include <LibCore/DateTime.h>
#include <LibCore/Proxy.h>
#include <LibCore/Socket.h>
#include <LibIPC/Decoder.h>
#include <LibIPC/File.h>
#include <fcntl.h>
namespace IPC {
ErrorOr<size_t> Decoder::decode_size()
{
return static_cast<size_t>(TRY(decode<u32>()));
}
template<>
ErrorOr<String> decode(Decoder& decoder)
{
auto length = TRY(decoder.decode_size());
return String::from_stream(decoder.stream(), length);
}
template<>
ErrorOr<DeprecatedString> decode(Decoder& decoder)
{
auto length = TRY(decoder.decode_size());
if (length == NumericLimits<u32>::max())
return DeprecatedString {};
if (length == 0)
return DeprecatedString::empty();
char* text_buffer = nullptr;
auto text_impl = StringImpl::create_uninitialized(length, text_buffer);
Bytes bytes { text_buffer, length };
TRY(decoder.decode_into(bytes));
return DeprecatedString { *text_impl };
}
template<>
ErrorOr<ByteBuffer> decode(Decoder& decoder)
{
auto length = TRY(decoder.decode_size());
if (length == 0)
return ByteBuffer {};
auto buffer = TRY(ByteBuffer::create_uninitialized(length));
auto bytes = buffer.bytes();
TRY(decoder.decode_into(bytes));
return buffer;
}
template<>
ErrorOr<JsonValue> decode(Decoder& decoder)
{
auto json = TRY(decoder.decode<DeprecatedString>());
return JsonValue::from_string(json);
}
template<>
ErrorOr<Time> decode(Decoder& decoder)
{
auto nanoseconds = TRY(decoder.decode<i64>());
return AK::Time::from_nanoseconds(nanoseconds);
}
template<>
ErrorOr<URL> decode(Decoder& decoder)
{
auto url = TRY(decoder.decode<DeprecatedString>());
return URL { url };
}
template<>
ErrorOr<File> decode(Decoder& decoder)
{
int fd = TRY(decoder.socket().receive_fd(O_CLOEXEC));
return File { fd, File::ConstructWithReceivedFileDescriptor };
}
template<>
ErrorOr<Empty> decode(Decoder&)
{
return Empty {};
}
template<>
ErrorOr<Core::AnonymousBuffer> decode(Decoder& decoder)
{
if (auto valid = TRY(decoder.decode<bool>()); !valid)
return Core::AnonymousBuffer {};
auto size = TRY(decoder.decode_size());
auto anon_file = TRY(decoder.decode<IPC::File>());
return Core::AnonymousBuffer::create_from_anon_fd(anon_file.take_fd(), size);
}
template<>
ErrorOr<Core::DateTime> decode(Decoder& decoder)
{
auto timestamp = TRY(decoder.decode<i64>());
return Core::DateTime::from_timestamp(static_cast<time_t>(timestamp));
}
template<>
ErrorOr<Core::ProxyData> decode(Decoder& decoder)
{
auto type = TRY(decoder.decode<Core::ProxyData::Type>());
auto host_ipv4 = TRY(decoder.decode<u32>());
auto port = TRY(decoder.decode<int>());
return Core::ProxyData { type, host_ipv4, port };
}
}
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