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_remote_gatt_descriptor_chromeos.h"
6
7 #include "base/bind.h"
8 #include "base/logging.h"
9 #include "base/strings/stringprintf.h"
10 #include "chromeos/dbus/bluetooth_gatt_descriptor_client.h"
11 #include "chromeos/dbus/dbus_thread_manager.h"
12 #include "device/bluetooth/bluetooth_remote_gatt_characteristic_chromeos.h"
13 #include "device/bluetooth/bluetooth_remote_gatt_service_chromeos.h"
14
15 namespace chromeos {
16
17 namespace {
18
19 // Stream operator for logging vector<uint8>.
operator <<(std::ostream & out,const std::vector<uint8> bytes)20 std::ostream& operator<<(std::ostream& out, const std::vector<uint8> bytes) {
21 out << "[";
22 for (std::vector<uint8>::const_iterator iter = bytes.begin();
23 iter != bytes.end(); ++iter) {
24 out << base::StringPrintf("%02X", *iter);
25 }
26 return out << "]";
27 }
28
29 } // namespace
30
BluetoothRemoteGattDescriptorChromeOS(BluetoothRemoteGattCharacteristicChromeOS * characteristic,const dbus::ObjectPath & object_path)31 BluetoothRemoteGattDescriptorChromeOS::BluetoothRemoteGattDescriptorChromeOS(
32 BluetoothRemoteGattCharacteristicChromeOS* characteristic,
33 const dbus::ObjectPath& object_path)
34 : object_path_(object_path),
35 characteristic_(characteristic),
36 weak_ptr_factory_(this) {
37 VLOG(1) << "Creating remote GATT descriptor with identifier: "
38 << GetIdentifier() << ", UUID: " << GetUUID().canonical_value();
39 }
40
41 BluetoothRemoteGattDescriptorChromeOS::
~BluetoothRemoteGattDescriptorChromeOS()42 ~BluetoothRemoteGattDescriptorChromeOS() {
43 }
44
GetIdentifier() const45 std::string BluetoothRemoteGattDescriptorChromeOS::GetIdentifier() const {
46 return object_path_.value();
47 }
48
GetUUID() const49 device::BluetoothUUID BluetoothRemoteGattDescriptorChromeOS::GetUUID() const {
50 BluetoothGattDescriptorClient::Properties* properties =
51 DBusThreadManager::Get()->GetBluetoothGattDescriptorClient()->
52 GetProperties(object_path_);
53 DCHECK(properties);
54 return device::BluetoothUUID(properties->uuid.value());
55 }
56
IsLocal() const57 bool BluetoothRemoteGattDescriptorChromeOS::IsLocal() const {
58 return false;
59 }
60
61 const std::vector<uint8>&
GetValue() const62 BluetoothRemoteGattDescriptorChromeOS::GetValue() const {
63 return cached_value_;
64 }
65
66 device::BluetoothGattCharacteristic*
GetCharacteristic() const67 BluetoothRemoteGattDescriptorChromeOS::GetCharacteristic() const {
68 return characteristic_;
69 }
70
71 device::BluetoothGattCharacteristic::Permissions
GetPermissions() const72 BluetoothRemoteGattDescriptorChromeOS::GetPermissions() const {
73 // TODO(armansito): Once BlueZ defines the permissions, return the correct
74 // values here.
75 return device::BluetoothGattCharacteristic::kPermissionNone;
76 }
77
ReadRemoteDescriptor(const ValueCallback & callback,const ErrorCallback & error_callback)78 void BluetoothRemoteGattDescriptorChromeOS::ReadRemoteDescriptor(
79 const ValueCallback& callback,
80 const ErrorCallback& error_callback) {
81 VLOG(1) << "Sending GATT characteristic descriptor read request to "
82 << "descriptor: " << GetIdentifier() << ", UUID: "
83 << GetUUID().canonical_value();
84
85 DBusThreadManager::Get()->GetBluetoothGattDescriptorClient()->ReadValue(
86 object_path_,
87 base::Bind(&BluetoothRemoteGattDescriptorChromeOS::OnValueSuccess,
88 weak_ptr_factory_.GetWeakPtr(),
89 callback),
90 base::Bind(&BluetoothRemoteGattDescriptorChromeOS::OnError,
91 weak_ptr_factory_.GetWeakPtr(),
92 error_callback));
93 }
94
WriteRemoteDescriptor(const std::vector<uint8> & new_value,const base::Closure & callback,const ErrorCallback & error_callback)95 void BluetoothRemoteGattDescriptorChromeOS::WriteRemoteDescriptor(
96 const std::vector<uint8>& new_value,
97 const base::Closure& callback,
98 const ErrorCallback& error_callback) {
99 VLOG(1) << "Sending GATT characteristic descriptor write request to "
100 << "characteristic: " << GetIdentifier() << ", UUID: "
101 << GetUUID().canonical_value() << ", with value: "
102 << new_value << ".";
103
104 DBusThreadManager::Get()->GetBluetoothGattDescriptorClient()->WriteValue(
105 object_path_,
106 new_value,
107 callback,
108 base::Bind(&BluetoothRemoteGattDescriptorChromeOS::OnError,
109 weak_ptr_factory_.GetWeakPtr(),
110 error_callback));
111 }
112
OnValueSuccess(const ValueCallback & callback,const std::vector<uint8> & value)113 void BluetoothRemoteGattDescriptorChromeOS::OnValueSuccess(
114 const ValueCallback& callback,
115 const std::vector<uint8>& value) {
116 VLOG(1) << "Descriptor value read: " << value;
117 cached_value_ = value;
118
119 DCHECK(characteristic_);
120 BluetoothRemoteGattServiceChromeOS* service =
121 static_cast<BluetoothRemoteGattServiceChromeOS*>(
122 characteristic_->GetService());
123 DCHECK(service);
124 service->NotifyDescriptorValueChanged(characteristic_, this, value);
125 callback.Run(value);
126 }
127
OnError(const ErrorCallback & error_callback,const std::string & error_name,const std::string & error_message)128 void BluetoothRemoteGattDescriptorChromeOS::OnError(
129 const ErrorCallback& error_callback,
130 const std::string& error_name,
131 const std::string& error_message) {
132 VLOG(1) << "Operation failed: " << error_name
133 << ", message: " << error_message;
134 error_callback.Run();
135 }
136
137 } // namespace chromeos
138