1 // Copyright 2014 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
4
5 #include "device/bluetooth/bluetooth_gatt_connection_chromeos.h"
6
7 #include "base/bind.h"
8 #include "base/logging.h"
9 #include "chromeos/dbus/dbus_thread_manager.h"
10 #include "device/bluetooth/bluetooth_adapter.h"
11 #include "device/bluetooth/bluetooth_device.h"
12
13 namespace chromeos {
14
BluetoothGattConnectionChromeOS(scoped_refptr<device::BluetoothAdapter> adapter,const std::string & device_address,const dbus::ObjectPath & object_path)15 BluetoothGattConnectionChromeOS::BluetoothGattConnectionChromeOS(
16 scoped_refptr<device::BluetoothAdapter> adapter,
17 const std::string& device_address,
18 const dbus::ObjectPath& object_path)
19 : connected_(true),
20 adapter_(adapter),
21 device_address_(device_address),
22 object_path_(object_path) {
23 DCHECK(adapter_.get());
24 DCHECK(!device_address_.empty());
25 DCHECK(object_path_.IsValid());
26
27 DBusThreadManager::Get()->GetBluetoothDeviceClient()->AddObserver(this);
28 }
29
~BluetoothGattConnectionChromeOS()30 BluetoothGattConnectionChromeOS::~BluetoothGattConnectionChromeOS() {
31 DBusThreadManager::Get()->GetBluetoothDeviceClient()->RemoveObserver(this);
32 Disconnect(base::Bind(&base::DoNothing));
33 }
34
GetDeviceAddress() const35 std::string BluetoothGattConnectionChromeOS::GetDeviceAddress() const {
36 return device_address_;
37 }
38
IsConnected()39 bool BluetoothGattConnectionChromeOS::IsConnected() {
40 // Lazily determine the activity state of the connection. If already
41 // marked as inactive, then return false. Otherwise, explicitly mark
42 // |connected_| as false if the device is removed or disconnected. We do this,
43 // so that if this method is called during a call to DeviceRemoved or
44 // DeviceChanged somewhere else, it returns the correct status.
45 if (!connected_)
46 return false;
47
48 BluetoothDeviceClient::Properties* properties =
49 DBusThreadManager::Get()->GetBluetoothDeviceClient()->
50 GetProperties(object_path_);
51 if (!properties || !properties->connected.value())
52 connected_ = false;
53
54 return connected_;
55 }
56
Disconnect(const base::Closure & callback)57 void BluetoothGattConnectionChromeOS::Disconnect(
58 const base::Closure& callback) {
59 if (!connected_) {
60 VLOG(1) << "Connection already inactive.";
61 callback.Run();
62 return;
63 }
64
65 // TODO(armansito): There isn't currently a good way to manage the ownership
66 // of a connection between Chrome and bluetoothd plugins/profiles. Until
67 // a proper reference count is kept by bluetoothd, we might unwittingly kill
68 // a connection that is managed by the daemon (e.g. HoG). For now, just return
69 // success to indicate that this BluetoothGattConnection is no longer active,
70 // even though the underlying connection won't actually be disconnected. This
71 // technically doesn't violate the contract put forth by this API.
72 connected_ = false;
73 callback.Run();
74 }
75
DeviceRemoved(const dbus::ObjectPath & object_path)76 void BluetoothGattConnectionChromeOS::DeviceRemoved(
77 const dbus::ObjectPath& object_path) {
78 if (object_path != object_path_)
79 return;
80
81 connected_ = false;
82 }
83
DevicePropertyChanged(const dbus::ObjectPath & object_path,const std::string & property_name)84 void BluetoothGattConnectionChromeOS::DevicePropertyChanged(
85 const dbus::ObjectPath& object_path,
86 const std::string& property_name) {
87 if (object_path != object_path_)
88 return;
89
90 if (!connected_)
91 return;
92
93 BluetoothDeviceClient::Properties* properties =
94 DBusThreadManager::Get()->GetBluetoothDeviceClient()->
95 GetProperties(object_path_);
96
97 if (!properties) {
98 connected_ = false;
99 return;
100 }
101
102 if (property_name == properties->connected.name() &&
103 !properties->connected.value())
104 connected_ = false;
105 }
106
107 } // namespace chromeos
108