Reland "Add Linux support for the Bluetooth API"

device/bluetooth/bluetooth_socket_chromeos.h

-// Copyright 2013 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.
-
-#ifndef DEVICE_BLUETOOTH_BLUETOOTH_SOCKET_CHROMEOS_H_
-#define DEVICE_BLUETOOTH_BLUETOOTH_SOCKET_CHROMEOS_H_
-
-#include <queue>
-#include <string>
-
-#include "base/memory/linked_ptr.h"
-#include "base/memory/scoped_ptr.h"
-#include "dbus/object_path.h"
-#include "device/bluetooth/bluetooth_adapter.h"
-#include "device/bluetooth/bluetooth_export.h"
-#include "device/bluetooth/bluetooth_socket.h"
-#include "device/bluetooth/bluetooth_socket_net.h"
-#include "device/bluetooth/bluetooth_uuid.h"
-#include "device/bluetooth/dbus/bluetooth_profile_manager_client.h"
-#include "device/bluetooth/dbus/bluetooth_profile_service_provider.h"
-
-namespace dbus {
-class FileDescriptor;
-}  // namespace dbus
-
-namespace chromeos {
-
-class BluetoothDeviceChromeOS;
-class BluetoothAdapterChromeOS;
-class BluetoothAdapterProfileChromeOS;
-
-// The BluetoothSocketChromeOS class implements BluetoothSocket for the
-// Chrome OS platform.
-//
-// This class is not thread-safe, but is only called from the UI thread.
-class DEVICE_BLUETOOTH_EXPORT BluetoothSocketChromeOS
-    : public device::BluetoothSocketNet,
-      public device::BluetoothAdapter::Observer,
-      public bluez::BluetoothProfileServiceProvider::Delegate {
- public:
-  enum SecurityLevel {
-    SECURITY_LEVEL_LOW,
-    SECURITY_LEVEL_MEDIUM
-  };
-
-  static scoped_refptr<BluetoothSocketChromeOS> CreateBluetoothSocket(
-      scoped_refptr<base::SequencedTaskRunner> ui_task_runner,
-      scoped_refptr<device::BluetoothSocketThread> socket_thread);
-
-  // Connects this socket to the service on |device| published as UUID |uuid|,
-  // the underlying protocol and PSM or Channel is obtained through service
-  // discovery. On a successful connection the socket properties will be updated
-  // and |success_callback| called. On failure |error_callback| will be called
-  // with a message explaining the cause of the failure.
-  virtual void Connect(const BluetoothDeviceChromeOS* device,
-                       const device::BluetoothUUID& uuid,
-                       SecurityLevel security_level,
-                       const base::Closure& success_callback,
-                       const ErrorCompletionCallback& error_callback);
-
-  // Listens using this socket using a service published on |adapter|. The
-  // service is either RFCOMM or L2CAP depending on |socket_type| and published
-  // as UUID |uuid|. The |service_options| argument is interpreted according to
-  // |socket_type|. |success_callback| will be called if the service is
-  // successfully registered, |error_callback| on failure with a message
-  // explaining the cause.
-  enum SocketType { kRfcomm, kL2cap };
-  virtual void Listen(
-      scoped_refptr<device::BluetoothAdapter> adapter,
-      SocketType socket_type,
-      const device::BluetoothUUID& uuid,
-      const device::BluetoothAdapter::ServiceOptions& service_options,
-      const base::Closure& success_callback,
-      const ErrorCompletionCallback& error_callback);
-
-  // BluetoothSocket:
-  void Close() override;
-  void Disconnect(const base::Closure& callback) override;
-  void Accept(const AcceptCompletionCallback& success_callback,
-              const ErrorCompletionCallback& error_callback) override;
-
- protected:
-  ~BluetoothSocketChromeOS() override;
-
- private:
-  BluetoothSocketChromeOS(
-      scoped_refptr<base::SequencedTaskRunner> ui_task_runner,
-      scoped_refptr<device::BluetoothSocketThread> socket_thread);
-
-  // Register the underlying profile client object with the Bluetooth Daemon.
-  void RegisterProfile(BluetoothAdapterChromeOS* adapter,
-                       const base::Closure& success_callback,
-                       const ErrorCompletionCallback& error_callback);
-  void OnRegisterProfile(const base::Closure& success_callback,
-                         const ErrorCompletionCallback& error_callback,
-                         BluetoothAdapterProfileChromeOS* profile);
-  void OnRegisterProfileError(const ErrorCompletionCallback& error_callback,
-                              const std::string& error_message);
-
-  // Called by dbus:: on completion of the ConnectProfile() method.
-  void OnConnectProfile(const base::Closure& success_callback);
-  void OnConnectProfileError(const ErrorCompletionCallback& error_callback,
-                             const std::string& error_name,
-                             const std::string& error_message);
-
-  // BluetoothAdapter::Observer:
-  void AdapterPresentChanged(device::BluetoothAdapter* adapter,
-                             bool present) override;
-
-  // Called by dbus:: on completion of the RegisterProfile() method call
-  // triggered as a result of the adapter becoming present again.
-  void OnInternalRegisterProfile(BluetoothAdapterProfileChromeOS* profile);
-  void OnInternalRegisterProfileError(const std::string& error_message);
-
-  // bluez::BluetoothProfileServiceProvider::Delegate:
-  void Released() override;
-  void NewConnection(
-      const dbus::ObjectPath& device_path,
-      scoped_ptr<dbus::FileDescriptor> fd,
-      const bluez::BluetoothProfileServiceProvider::Delegate::Options& options,
-      const ConfirmationCallback& callback) override;
-  void RequestDisconnection(const dbus::ObjectPath& device_path,
-                            const ConfirmationCallback& callback) override;
-  void Cancel() override;
-
-  // Method run to accept a single incoming connection.
-  void AcceptConnectionRequest();
-
-  // Method run on the socket thread to validate the file descriptor of a new
-  // connection and set up the underlying net::TCPSocket() for it.
-  void DoNewConnection(
-      const dbus::ObjectPath& device_path,
-      scoped_ptr<dbus::FileDescriptor> fd,
-      const bluez::BluetoothProfileServiceProvider::Delegate::Options& options,
-      const ConfirmationCallback& callback);
-
-  // Method run on the UI thread after a new connection has been accepted and
-  // a socket allocated in |socket|. Takes care of calling the Accept()
-  // callback and |callback| with the right arguments based on |status|.
-  void OnNewConnection(scoped_refptr<BluetoothSocket> socket,
-                       const ConfirmationCallback& callback,
-                       Status status);
-
-  // Method run on the socket thread with a valid file descriptor |fd|, once
-  // complete calls |callback| on the UI thread with an appropriate argument
-  // indicating success or failure.
-  void DoConnect(scoped_ptr<dbus::FileDescriptor> fd,
-                 const ConfirmationCallback& callback);
-
-  // Method run to clean-up a listening socket.
-  void DoCloseListening();
-
-  // Unregisters this socket's usage of the Bluetooth profile which cleans up
-  // the profile if no one is using it.
-  void UnregisterProfile();
-
-  // Adapter the profile is registered against
-  scoped_refptr<device::BluetoothAdapter> adapter_;
-
-  // Address and D-Bus object path of the device being connected to, empty and
-  // ignored if the socket is listening.
-  std::string device_address_;
-  dbus::ObjectPath device_path_;
-
-  // UUID of the profile being connected to, or listening on.
-  device::BluetoothUUID uuid_;
-
-  // Copy of the profile options used for registering the profile.
-  scoped_ptr<bluez::BluetoothProfileManagerClient::Options> options_;
-
-  // The profile registered with the adapter for this socket.
-  BluetoothAdapterProfileChromeOS* profile_;
-
-  // Pending request to an Accept() call.
-  struct AcceptRequest {
-    AcceptRequest();
-    ~AcceptRequest();
-
-    AcceptCompletionCallback success_callback;
-    ErrorCompletionCallback error_callback;
-  };
-  scoped_ptr<AcceptRequest> accept_request_;
-
-  // Queue of incoming connection requests.
-  struct ConnectionRequest {
-    ConnectionRequest();
-    ~ConnectionRequest();
-
-    dbus::ObjectPath device_path;
-    scoped_ptr<dbus::FileDescriptor> fd;
-    bluez::BluetoothProfileServiceProvider::Delegate::Options options;
-    ConfirmationCallback callback;
-    bool accepting;
-    bool cancelled;
-  };
-  std::queue<linked_ptr<ConnectionRequest> > connection_request_queue_;
-
-  DISALLOW_COPY_AND_ASSIGN(BluetoothSocketChromeOS);
-};
-
-}  // namespace chromeos
-
-#endif  // DEVICE_BLUETOOTH_BLUETOOTH_SOCKET_CHROMEOS_H_