| // Copyright 2018 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #include "chromeos/dbus/arc_appfuse_provider_client.h" |
| |
| #include <utility> |
| |
| #include "base/bind.h" |
| #include "base/bind_helpers.h" |
| #include "base/callback.h" |
| #include "dbus/bus.h" |
| #include "dbus/message.h" |
| #include "dbus/object_proxy.h" |
| #include "third_party/cros_system_api/dbus/service_constants.h" |
| |
| namespace chromeos { |
| |
| namespace { |
| |
| class ArcAppfuseProviderClientImpl : public ArcAppfuseProviderClient { |
| public: |
| ArcAppfuseProviderClientImpl() : weak_ptr_factory_(this) {} |
| ~ArcAppfuseProviderClientImpl() override = default; |
| |
| // ArcAppfuseProviderClient override: |
| void Mount(uint32_t uid, |
| int32_t mount_id, |
| DBusMethodCallback<base::ScopedFD> callback) override { |
| dbus::MethodCall method_call(arc::appfuse::kArcAppfuseProviderInterface, |
| arc::appfuse::kMountMethod); |
| dbus::MessageWriter writer(&method_call); |
| writer.AppendUint32(uid); |
| writer.AppendInt32(mount_id); |
| proxy_->CallMethod( |
| &method_call, dbus::ObjectProxy::TIMEOUT_USE_DEFAULT, |
| base::BindOnce(&ArcAppfuseProviderClientImpl::OnFDMethod, |
| weak_ptr_factory_.GetWeakPtr(), std::move(callback))); |
| } |
| |
| void Unmount(uint32_t uid, |
| int32_t mount_id, |
| VoidDBusMethodCallback callback) override { |
| dbus::MethodCall method_call(arc::appfuse::kArcAppfuseProviderInterface, |
| arc::appfuse::kUnmountMethod); |
| dbus::MessageWriter writer(&method_call); |
| writer.AppendUint32(uid); |
| writer.AppendInt32(mount_id); |
| proxy_->CallMethod( |
| &method_call, dbus::ObjectProxy::TIMEOUT_USE_DEFAULT, |
| base::BindOnce(&ArcAppfuseProviderClientImpl::OnVoidDBusMethod, |
| weak_ptr_factory_.GetWeakPtr(), std::move(callback))); |
| } |
| |
| void OpenFile(uint32_t uid, |
| int32_t mount_id, |
| int32_t file_id, |
| int32_t flags, |
| DBusMethodCallback<base::ScopedFD> callback) override { |
| dbus::MethodCall method_call(arc::appfuse::kArcAppfuseProviderInterface, |
| arc::appfuse::kOpenFileMethod); |
| dbus::MessageWriter writer(&method_call); |
| writer.AppendUint32(uid); |
| writer.AppendInt32(mount_id); |
| writer.AppendInt32(file_id); |
| writer.AppendInt32(flags); |
| proxy_->CallMethod( |
| &method_call, dbus::ObjectProxy::TIMEOUT_USE_DEFAULT, |
| base::BindOnce(&ArcAppfuseProviderClientImpl::OnFDMethod, |
| weak_ptr_factory_.GetWeakPtr(), std::move(callback))); |
| } |
| |
| protected: |
| // DBusClient override. |
| void Init(dbus::Bus* bus) override { |
| proxy_ = bus->GetObjectProxy( |
| arc::appfuse::kArcAppfuseProviderServiceName, |
| dbus::ObjectPath(arc::appfuse::kArcAppfuseProviderServicePath)); |
| } |
| |
| private: |
| // Runs the callback with the method call result. |
| void OnVoidDBusMethod(VoidDBusMethodCallback callback, |
| dbus::Response* response) { |
| std::move(callback).Run(response != nullptr); |
| } |
| |
| void OnFDMethod(DBusMethodCallback<base::ScopedFD> callback, |
| dbus::Response* response) { |
| if (!response) { |
| std::move(callback).Run(base::nullopt); |
| return; |
| } |
| dbus::MessageReader reader(response); |
| base::ScopedFD fd; |
| if (!reader.PopFileDescriptor(&fd)) { |
| LOG(ERROR) << "Failed to pop FD."; |
| std::move(callback).Run(base::nullopt); |
| return; |
| } |
| std::move(callback).Run(std::move(fd)); |
| } |
| |
| dbus::ObjectProxy* proxy_ = nullptr; |
| |
| base::WeakPtrFactory<ArcAppfuseProviderClientImpl> weak_ptr_factory_; |
| |
| DISALLOW_COPY_AND_ASSIGN(ArcAppfuseProviderClientImpl); |
| }; |
| |
| } // namespace |
| |
| ArcAppfuseProviderClient::ArcAppfuseProviderClient() = default; |
| |
| ArcAppfuseProviderClient::~ArcAppfuseProviderClient() = default; |
| |
| // static |
| std::unique_ptr<ArcAppfuseProviderClient> ArcAppfuseProviderClient::Create() { |
| return std::make_unique<ArcAppfuseProviderClientImpl>(); |
| } |
| |
| } // namespace chromeos |