RGBCube/serenity
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Everywhere: Make ByteBuffer::{create_*,copy}() OOM-safe

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This commit is contained in:
Ali Mohammad Pur 2021-09-06 03:29:52 +04:30 • committed by Andreas Kling
parent 3a9f00c59b
commit 97e97bccab
105 changed files with 629 additions and 290 deletions
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24
Userland/Services/SpiceAgent/SpiceAgent.cpp
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@ -59,7 +59,7 @@ void SpiceAgent::on_message_received()
{
ChunkHeader header {};
read_n(&header, sizeof(header));
auto buffer = ByteBuffer::create_uninitialized(header.size);
auto buffer = ByteBuffer::create_uninitialized(header.size).release_value(); // FIXME: Handle possible OOM situation.
read_n(buffer.data(), buffer.size());
auto* message = reinterpret_cast<Message*>(buffer.data());
switch (message->type) {
@ -75,15 +75,17 @@ void SpiceAgent::on_message_received()
auto* request_message = reinterpret_cast<ClipboardRequest*>(message->data);
auto clipboard = m_clipboard_connection.get_clipboard_data();
auto& mime = clipboard.mime_type();
ByteBuffer byte_buffer;
ByteBuffer backing_byte_buffer;
ReadonlyBytes bytes;
if (mime == "image/x-serenityos") {
auto bitmap = m_clipboard_connection.get_bitmap();
byte_buffer = Gfx::PNGWriter::encode(*bitmap);
backing_byte_buffer = Gfx::PNGWriter::encode(*bitmap);
bytes = backing_byte_buffer;
} else {
auto clip_data = clipboard.data();
byte_buffer = ByteBuffer::copy(clip_data.data<void>(), clip_data.size());
auto data = clipboard.data();
bytes = { data.data<void>(), data.size() };
}
auto clipboard_buffer = Clipboard::make_buffer((ClipboardType)request_message->type, byte_buffer);
auto clipboard_buffer = Clipboard::make_buffer((ClipboardType)request_message->type, bytes);
send_message(clipboard_buffer);
break;
}
@ -116,7 +118,7 @@ void SpiceAgent::on_message_received()
case (u32)MessageType::Clipboard: {
auto* clipboard_message = reinterpret_cast<Clipboard*>(message->data);
auto type = (ClipboardType)clipboard_message->type;
auto data_buffer = ByteBuffer::create_uninitialized(message->size - sizeof(u32));
auto data_buffer = ByteBuffer::create_uninitialized(message->size - sizeof(u32)).release_value(); // FIXME: Handle possible OOM situation.
const auto total_bytes = message->size - sizeof(Clipboard);
auto bytes_copied = header.size - sizeof(Message) - sizeof(Clipboard);
@ -204,7 +206,7 @@ SpiceAgent::Message* SpiceAgent::initialize_headers(u8* data, size_t additional_
ByteBuffer SpiceAgent::AnnounceCapabilities::make_buffer(bool request, const Vector<Capability>& capabilities)
{
size_t required_size = sizeof(ChunkHeader) + sizeof(Message) + sizeof(AnnounceCapabilities);
auto buffer = ByteBuffer::create_uninitialized(required_size);
auto buffer = ByteBuffer::create_uninitialized(required_size).release_value(); // FIXME: Handle possible OOM situation.
u8* data = buffer.data();
auto* message = initialize_headers(data, sizeof(AnnounceCapabilities), MessageType::AnnounceCapabilities);
@ -226,7 +228,7 @@ ByteBuffer SpiceAgent::ClipboardGrab::make_buffer(const Vector<ClipboardType>& t
VERIFY(types.size() > 0);
size_t variable_data_size = sizeof(u32) * types.size();
size_t required_size = sizeof(ChunkHeader) + sizeof(Message) + variable_data_size;
auto buffer = ByteBuffer::create_uninitialized(required_size);
auto buffer = ByteBuffer::create_uninitialized(required_size).release_value(); // FIXME: Handle possible OOM situation.
u8* data = buffer.data();
auto* message = initialize_headers(data, variable_data_size, MessageType::ClipboardGrab);
@ -244,7 +246,7 @@ ByteBuffer SpiceAgent::Clipboard::make_buffer(ClipboardType type, ReadonlyBytes
{
size_t data_size = sizeof(Clipboard) + contents.size();
size_t required_size = sizeof(ChunkHeader) + sizeof(Message) + data_size;
auto buffer = ByteBuffer::create_uninitialized(required_size);
auto buffer = ByteBuffer::create_uninitialized(required_size).release_value(); // FIXME: Handle possible OOM situation.
u8* data = buffer.data();
auto* message = initialize_headers(data, data_size, MessageType::Clipboard);
@ -262,7 +264,7 @@ ByteBuffer SpiceAgent::ClipboardRequest::make_buffer(ClipboardType type)
{
size_t data_size = sizeof(ClipboardRequest);
size_t required_size = sizeof(ChunkHeader) + sizeof(Message) + data_size;
auto buffer = ByteBuffer::create_uninitialized(required_size);
auto buffer = ByteBuffer::create_uninitialized(required_size).release_value(); // FIXME: Handle possible OOM situation.
u8* data = buffer.data();
auto* message = initialize_headers(data, data_size, MessageType::ClipboardRequest);