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/*
* Copyright (c) 2021, timmot <tiwwot@protonmail.com>
* Copyright (c) 2022, Mustafa Quraish <mustafa@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <AK/LexicalPath.h>
#include <LibCore/File.h>
#include <LibFileSystemAccessClient/Client.h>
#include <LibGUI/ConnectionToWindowServer.h>
#include <LibGUI/MessageBox.h>
#include <LibGUI/Window.h>
namespace FileSystemAccessClient {
static RefPtr<Client> s_the = nullptr;
Client& Client::the()
{
if (!s_the || !s_the->is_open())
s_the = Client::try_create().release_value_but_fixme_should_propagate_errors();
return *s_the;
}
DeprecatedResult Client::try_request_file_read_only_approved(GUI::Window* parent_window, DeprecatedString const& path)
{
auto const id = get_new_id();
m_promises.set(id, PromiseAndWindow { { Core::Promise<DeprecatedResult>::construct() }, parent_window });
auto parent_window_server_client_id = GUI::ConnectionToWindowServer::the().expose_client_id();
auto child_window_server_client_id = expose_window_server_client_id();
auto parent_window_id = parent_window->window_id();
GUI::ConnectionToWindowServer::the().add_window_stealing_for_client(child_window_server_client_id, parent_window_id);
ScopeGuard guard([parent_window_id, child_window_server_client_id] {
GUI::ConnectionToWindowServer::the().remove_window_stealing_for_client(child_window_server_client_id, parent_window_id);
});
if (path.starts_with('/')) {
async_request_file_read_only_approved(id, parent_window_server_client_id, parent_window_id, path);
} else {
auto full_path = LexicalPath::join(Core::File::current_working_directory(), path).string();
async_request_file_read_only_approved(id, parent_window_server_client_id, parent_window_id, full_path);
}
return handle_promise<DeprecatedResult>(id);
}
DeprecatedResult Client::try_request_file(GUI::Window* parent_window, DeprecatedString const& path, Core::OpenMode mode)
{
auto const id = get_new_id();
m_promises.set(id, PromiseAndWindow { { Core::Promise<DeprecatedResult>::construct() }, parent_window });
auto parent_window_server_client_id = GUI::ConnectionToWindowServer::the().expose_client_id();
auto child_window_server_client_id = expose_window_server_client_id();
auto parent_window_id = parent_window->window_id();
GUI::ConnectionToWindowServer::the().add_window_stealing_for_client(child_window_server_client_id, parent_window_id);
ScopeGuard guard([parent_window_id, child_window_server_client_id] {
GUI::ConnectionToWindowServer::the().remove_window_stealing_for_client(child_window_server_client_id, parent_window_id);
});
if (path.starts_with('/')) {
async_request_file(id, parent_window_server_client_id, parent_window_id, path, mode);
} else {
auto full_path = LexicalPath::join(Core::File::current_working_directory(), path).string();
async_request_file(id, parent_window_server_client_id, parent_window_id, full_path, mode);
}
return handle_promise<DeprecatedResult>(id);
}
DeprecatedResult Client::try_open_file(GUI::Window* parent_window, DeprecatedString const& window_title, StringView path, Core::OpenMode requested_access)
{
auto const id = get_new_id();
m_promises.set(id, PromiseAndWindow { { Core::Promise<DeprecatedResult>::construct() }, parent_window });
auto parent_window_server_client_id = GUI::ConnectionToWindowServer::the().expose_client_id();
auto child_window_server_client_id = expose_window_server_client_id();
auto parent_window_id = parent_window->window_id();
GUI::ConnectionToWindowServer::the().add_window_stealing_for_client(child_window_server_client_id, parent_window_id);
ScopeGuard guard([parent_window_id, child_window_server_client_id] {
GUI::ConnectionToWindowServer::the().remove_window_stealing_for_client(child_window_server_client_id, parent_window_id);
});
async_prompt_open_file(id, parent_window_server_client_id, parent_window_id, window_title, path, requested_access);
return handle_promise<DeprecatedResult>(id);
}
DeprecatedResult Client::try_save_file_deprecated(GUI::Window* parent_window, DeprecatedString const& name, DeprecatedString const ext, Core::OpenMode requested_access)
{
auto const id = get_new_id();
m_promises.set(id, PromiseAndWindow { { Core::Promise<DeprecatedResult>::construct() }, parent_window });
auto parent_window_server_client_id = GUI::ConnectionToWindowServer::the().expose_client_id();
auto child_window_server_client_id = expose_window_server_client_id();
auto parent_window_id = parent_window->window_id();
GUI::ConnectionToWindowServer::the().add_window_stealing_for_client(child_window_server_client_id, parent_window_id);
ScopeGuard guard([parent_window_id, child_window_server_client_id] {
GUI::ConnectionToWindowServer::the().remove_window_stealing_for_client(child_window_server_client_id, parent_window_id);
});
async_prompt_save_file(id, parent_window_server_client_id, parent_window_id, name.is_null() ? "Untitled" : name, ext.is_null() ? "txt" : ext, Core::StandardPaths::home_directory(), requested_access);
return handle_promise<DeprecatedResult>(id);
}
Result Client::save_file(GUI::Window* parent_window, DeprecatedString const& name, DeprecatedString const ext, Core::Stream::OpenMode requested_access)
{
auto const id = get_new_id();
m_promises.set(id, PromiseAndWindow { { Core::Promise<Result>::construct() }, parent_window });
auto parent_window_server_client_id = GUI::ConnectionToWindowServer::the().expose_client_id();
auto child_window_server_client_id = expose_window_server_client_id();
auto parent_window_id = parent_window->window_id();
GUI::ConnectionToWindowServer::the().add_window_stealing_for_client(child_window_server_client_id, parent_window_id);
ScopeGuard guard([parent_window_id, child_window_server_client_id] {
GUI::ConnectionToWindowServer::the().remove_window_stealing_for_client(child_window_server_client_id, parent_window_id);
});
// The endpoint only cares about ReadOnly, WriteOnly and ReadWrite and both enum shares the same layout for these.
Core::OpenMode deprecated_requested_access = static_cast<Core::OpenMode>(requested_access);
async_prompt_save_file(id, parent_window_server_client_id, parent_window_id, name.is_null() ? "Untitled" : name, ext.is_null() ? "txt" : ext, Core::StandardPaths::home_directory(), deprecated_requested_access);
return handle_promise<Result>(id);
}
void Client::handle_prompt_end(i32 request_id, i32 error, Optional<IPC::File> const& ipc_file, Optional<DeprecatedString> const& chosen_file)
{
auto potential_data = m_promises.get(request_id);
VERIFY(potential_data.has_value());
auto& request_data = potential_data.value();
auto const resolve_any_promise = [&promise = request_data.promise](Error&& error) {
if (promise.has<PromiseType<DeprecatedResult>>()) {
promise.get<PromiseType<DeprecatedResult>>()->resolve(move(error));
return;
}
promise.get<PromiseType<Result>>()->resolve(move(error));
};
if (error != 0) {
// We don't want to show an error message for non-existent files since some applications may want
// to handle it as opening a new, named file.
if (error != -1 && error != ENOENT)
GUI::MessageBox::show_error(request_data.parent_window, DeprecatedString::formatted("Opening \"{}\" failed: {}", *chosen_file, strerror(error)));
resolve_any_promise(Error::from_errno(error));
return;
}
if (Core::File::is_device(ipc_file->fd())) {
GUI::MessageBox::show_error(request_data.parent_window, DeprecatedString::formatted("Opening \"{}\" failed: Cannot open device files", *chosen_file));
resolve_any_promise(Error::from_string_literal("Cannot open device files"));
return;
}
if (Core::File::is_directory(ipc_file->fd())) {
GUI::MessageBox::show_error(request_data.parent_window, DeprecatedString::formatted("Opening \"{}\" failed: Cannot open directory", *chosen_file));
resolve_any_promise(Error::from_errno(EISDIR));
return;
}
if (request_data.promise.has<PromiseType<DeprecatedResult>>()) {
auto file = Core::File::construct();
auto fd = ipc_file->take_fd();
file->open(fd, Core::OpenMode::ReadWrite, Core::File::ShouldCloseFileDescriptor::Yes);
file->set_filename(*chosen_file);
request_data.promise.get<PromiseType<DeprecatedResult>>()->resolve(file);
return;
}
auto file_or_error = Core::Stream::File::adopt_fd(ipc_file->take_fd(), Core::Stream::OpenMode::ReadWrite);
if (file_or_error.is_error()) {
resolve_any_promise(file_or_error.release_error());
}
request_data.promise.get<PromiseType<Result>>()->resolve(file_or_error.release_value());
}
void Client::die()
{
for (auto const& entry : m_promises)
handle_prompt_end(entry.key, ECONNRESET, {}, "");
}
int Client::get_new_id()
{
auto const new_id = m_last_id++;
// Note: This verify shouldn't fail, and we should provide a valid ID
// But we probably have more issues if this test fails.
VERIFY(!m_promises.contains(new_id));
return new_id;
}
template<typename AnyResult>
AnyResult Client::handle_promise(int id)
{
auto result = m_promises.get(id)->promise.get<PromiseType<AnyResult>>()->await();
m_promises.remove(id);
return result;
}
}
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