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/*
* Copyright (c) 2020, Andreas Kling <kling@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <AK/MemoryStream.h>
#include <AK/URL.h>
#include <LibCore/AnonymousBuffer.h>
#include <LibCore/DateTime.h>
#include <LibIPC/Decoder.h>
#include <LibIPC/Dictionary.h>
#include <LibIPC/File.h>
#include <errno.h>
#include <fcntl.h>
#include <string.h>
#include <sys/socket.h>
namespace IPC {
bool Decoder::decode(bool& value)
{
m_stream >> value;
return !m_stream.handle_any_error();
}
bool Decoder::decode(u8& value)
{
m_stream >> value;
return !m_stream.handle_any_error();
}
bool Decoder::decode(u16& value)
{
m_stream >> value;
return !m_stream.handle_any_error();
}
bool Decoder::decode(u32& value)
{
m_stream >> value;
return !m_stream.handle_any_error();
}
bool Decoder::decode(u64& value)
{
m_stream >> value;
return !m_stream.handle_any_error();
}
bool Decoder::decode(i8& value)
{
m_stream >> value;
return !m_stream.handle_any_error();
}
bool Decoder::decode(i16& value)
{
m_stream >> value;
return !m_stream.handle_any_error();
}
bool Decoder::decode(i32& value)
{
m_stream >> value;
return !m_stream.handle_any_error();
}
bool Decoder::decode(i64& value)
{
m_stream >> value;
return !m_stream.handle_any_error();
}
bool Decoder::decode(float& value)
{
m_stream >> value;
return !m_stream.handle_any_error();
}
bool Decoder::decode(String& value)
{
i32 length = 0;
m_stream >> length;
if (m_stream.handle_any_error())
return false;
if (length < 0) {
value = {};
return true;
}
if (length == 0) {
value = String::empty();
return true;
}
char* text_buffer = nullptr;
auto text_impl = StringImpl::create_uninitialized(static_cast<size_t>(length), text_buffer);
m_stream >> Bytes { text_buffer, static_cast<size_t>(length) };
value = *text_impl;
return !m_stream.handle_any_error();
}
bool Decoder::decode(ByteBuffer& value)
{
i32 length = 0;
m_stream >> length;
if (m_stream.handle_any_error())
return false;
if (length < 0) {
value = {};
return true;
}
if (length == 0) {
value = {};
return true;
}
if (auto buffer_result = ByteBuffer::create_uninitialized(length); buffer_result.has_value())
value = buffer_result.release_value();
else
return false;
m_stream >> value.bytes();
return !m_stream.handle_any_error();
}
bool Decoder::decode(URL& value)
{
String string;
if (!decode(string))
return false;
value = URL(string);
return true;
}
bool Decoder::decode(Dictionary& dictionary)
{
u64 size = 0;
m_stream >> size;
if (m_stream.handle_any_error())
return false;
if (size >= (size_t)NumericLimits<i32>::max()) {
VERIFY_NOT_REACHED();
}
for (size_t i = 0; i < size; ++i) {
String key;
if (!decode(key))
return false;
String value;
if (!decode(value))
return false;
dictionary.add(move(key), move(value));
}
return true;
}
bool Decoder::decode([[maybe_unused]] File& file)
{
#ifdef __serenity__
int fd = recvfd(m_sockfd, O_CLOEXEC);
if (fd < 0) {
dbgln("recvfd: {}", strerror(errno));
return false;
}
file = File(fd, File::ConstructWithReceivedFileDescriptor);
return true;
#else
[[maybe_unused]] auto fd = m_sockfd;
warnln("fd passing is not supported on this platform, sorry :(");
return false;
#endif
}
bool decode(Decoder& decoder, Core::AnonymousBuffer& buffer)
{
bool valid = false;
if (!decoder.decode(valid))
return false;
if (!valid) {
buffer = {};
return true;
}
u32 size;
if (!decoder.decode(size))
return false;
IPC::File anon_file;
if (!decoder.decode(anon_file))
return false;
buffer = Core::AnonymousBuffer::create_from_anon_fd(anon_file.take_fd(), size);
return buffer.is_valid();
}
bool decode(Decoder& decoder, Core::DateTime& datetime)
{
i64 timestamp = -1;
if (!decoder.decode(timestamp))
return false;
datetime = Core::DateTime::from_timestamp(static_cast<time_t>(timestamp));
return true;
}
}
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