| // Copyright 2017 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/virtual_file_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 VirtualFileProviderClientImpl : public VirtualFileProviderClient { |
| public: |
| VirtualFileProviderClientImpl() : weak_ptr_factory_(this) {} |
| ~VirtualFileProviderClientImpl() override = default; |
| |
| // VirtualFileProviderClient override: |
| void OpenFile(int64_t size, OpenFileCallback callback) override { |
| dbus::MethodCall method_call( |
| virtual_file_provider::kVirtualFileProviderInterface, |
| virtual_file_provider::kOpenFileMethod); |
| dbus::MessageWriter writer(&method_call); |
| writer.AppendInt64(size); |
| proxy_->CallMethod(&method_call, dbus::ObjectProxy::TIMEOUT_USE_DEFAULT, |
| base::Bind(&VirtualFileProviderClientImpl::OnOpenFile, |
| weak_ptr_factory_.GetWeakPtr(), |
| base::Passed(std::move(callback)))); |
| } |
| |
| protected: |
| // DBusClient override. |
| void Init(dbus::Bus* bus) override { |
| proxy_ = bus->GetObjectProxy( |
| virtual_file_provider::kVirtualFileProviderServiceName, |
| dbus::ObjectPath( |
| virtual_file_provider::kVirtualFileProviderServicePath)); |
| } |
| |
| private: |
| // Runs the callback with OpenFile method call result. |
| void OnOpenFile(OpenFileCallback callback, dbus::Response* response) { |
| if (!response) { |
| std::move(callback).Run(std::string(), base::ScopedFD()); |
| return; |
| } |
| dbus::MessageReader reader(response); |
| std::string id; |
| base::ScopedFD fd; |
| if (!reader.PopString(&id) || !reader.PopFileDescriptor(&fd)) { |
| LOG(ERROR) << "Invalid method call result."; |
| std::move(callback).Run(std::string(), base::ScopedFD()); |
| return; |
| } |
| std::move(callback).Run(id, std::move(fd)); |
| } |
| |
| dbus::ObjectProxy* proxy_ = nullptr; |
| |
| base::WeakPtrFactory<VirtualFileProviderClientImpl> weak_ptr_factory_; |
| |
| DISALLOW_COPY_AND_ASSIGN(VirtualFileProviderClientImpl); |
| }; |
| |
| } // namespace |
| |
| VirtualFileProviderClient::VirtualFileProviderClient() = default; |
| |
| VirtualFileProviderClient::~VirtualFileProviderClient() = default; |
| |
| // static |
| VirtualFileProviderClient* VirtualFileProviderClient::Create() { |
| return new VirtualFileProviderClientImpl(); |
| } |
| |
| } // namespace chromeos |