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// Copyright 2014 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 "base/memory/scoped_ptr.h"
#include "dbus/bus.h"
#include "dbus/exported_object.h"
#include "dbus/message.h"
#include "dbus/object_path.h"
#include "mojo/common/channel_init.h"
#include "mojo/public/cpp/bindings/interface.h"
#include "mojo/public/cpp/bindings/remote_ptr.h"
#include "mojo/public/cpp/shell/application.h"
#include "mojo/public/interfaces/shell/shell.mojom.h"
#include "mojo/shell/external_service.mojom.h"
namespace mojo {
const char kMojoDBusImplPath[] = "/org/chromium/MojoImpl";
const char kMojoDBusInterface[] = "org.chromium.Mojo";
const char kMojoDBusConnectMethod[] = "ConnectChannel";
class DBusExternalServiceBase : public mojo::ErrorHandler {
public:
explicit DBusExternalServiceBase(const std::string& service_name);
virtual ~DBusExternalServiceBase();
void Start();
protected:
// TODO(cmasone): Enable multiple peers to connect/disconnect
virtual void Connect(ScopedExternalServiceHostHandle client_handle) = 0;
virtual void Disconnect() = 0;
private:
virtual void OnError() OVERRIDE;
// Implementation of org.chromium.Mojo.ConnectChannel, exported over DBus.
// Takes a file descriptor and uses it to create a MessagePipe that is then
// hooked to a RemotePtr<mojo::ExternalServiceHost>.
void ConnectChannel(dbus::MethodCall* method_call,
dbus::ExportedObject::ResponseSender sender);
void ExportMethods();
void InitializeDBus();
void TakeDBusServiceOwnership();
const std::string service_name_;
scoped_refptr<dbus::Bus> bus_;
dbus::ExportedObject* exported_object_; // Owned by bus_;
scoped_ptr<mojo::common::ChannelInit> channel_init_;
DISALLOW_COPY_AND_ASSIGN(DBusExternalServiceBase);
};
template <class ServiceImpl>
class DBusExternalService : public DBusExternalServiceBase,
public mojo::ExternalService {
public:
explicit DBusExternalService(const std::string& service_name)
: DBusExternalServiceBase(service_name) {
}
virtual ~DBusExternalService() {}
protected:
virtual void Connect(ScopedExternalServiceHostHandle client_handle) OVERRIDE {
external_service_host_.reset(client_handle.Pass(), this, this);
}
virtual void Disconnect() OVERRIDE {
app_.reset();
external_service_host_.reset();
}
private:
virtual void Activate(mojo::ScopedMessagePipeHandle client_handle) OVERRIDE {
mojo::ScopedShellHandle shell_handle(
mojo::ShellHandle(client_handle.release().value()));
app_.reset(new mojo::Application(shell_handle.Pass()));
app_->AddServiceConnector(new mojo::ServiceConnector<ServiceImpl>());
}
mojo::RemotePtr<mojo::ExternalServiceHost> external_service_host_;
scoped_ptr<mojo::Application> app_;
};
} // namespace mojo
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