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SpiceAgent: Gracefully handle the host clearing the clipboard

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When the host clears the clipboard (e.g. by running `pbcopy </dev/null`)
the Spice server sends an empty string to us. Previously, we would crash
as `AnonymousBuffer::create_with_size` doesn't accept a size of 0. Fix
this by passing `{}` to `async_set_clipboard_data` in this case.
This commit is contained in:
Daniel Bertalan 2023-05-13 08:51:05 +02:00 committed by Andreas Kling
parent 9d78619b59
commit 2626136749
Notes: sideshowbarker 2024-07-16 22:58:46 +09:00 
Author: https://github.com/BertalanD
Commit: https://github.com/SerenityOS/serenity/commit/2626136749
Pull-request: https://github.com/SerenityOS/serenity/pull/18794
1 changed files with 9 additions and 5 deletions
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14
Userland/Services/SpiceAgent/SpiceAgent.cpp
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@ -132,11 +132,15 @@ void SpiceAgent::on_message_received()
m_just_set_clip = true;
if (type == ClipboardType::Text) {
auto anon_buffer_or_error = Core::AnonymousBuffer::create_with_size(data_buffer.size());
VERIFY(!anon_buffer_or_error.is_error());
auto anon_buffer = anon_buffer_or_error.release_value();
memcpy(anon_buffer.data<void>(), data_buffer.data(), data_buffer.size());
m_clipboard_connection.async_set_clipboard_data(anon_buffer, "text/plain", {});
if (data_buffer.is_empty()) {
m_clipboard_connection.async_set_clipboard_data({}, "text/plain", {});
} else {
auto anon_buffer_or_error = Core::AnonymousBuffer::create_with_size(data_buffer.size());
VERIFY(!anon_buffer_or_error.is_error());
auto anon_buffer = anon_buffer_or_error.release_value();
memcpy(anon_buffer.data<void>(), data_buffer.data(), data_buffer.size());
m_clipboard_connection.async_set_clipboard_data(anon_buffer, "text/plain", {});
}
return;
} else {
ErrorOr<Gfx::ImageFrameDescriptor> frame_or_error = Gfx::ImageFrameDescriptor {};