chromeos/dbus/fake_bluetooth_gatt_descriptor_client.cc

   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 "chromeos/dbus/fake_bluetooth_gatt_descriptor_client.h"
   6
   7 #include "base/bind.h"
   8 #include "base/logging.h"
   9 #include "chromeos/dbus/bluetooth_gatt_characteristic_client.h"
  10 #include "chromeos/dbus/dbus_thread_manager.h"
  11 #include "third_party/cros_system_api/dbus/service_constants.h"
  12
  13 namespace chromeos {
  14
  15 const char FakeBluetoothGattDescriptorClient::
  16     kClientCharacteristicConfigurationPathComponent[] = "desc0000";
  17 const char FakeBluetoothGattDescriptorClient::
  18     kClientCharacteristicConfigurationUUID[] =
  19         "00002902-0000-1000-8000-00805f9b34fb";
  20
  21 FakeBluetoothGattDescriptorClient::Properties::Properties(
  22     const PropertyChangedCallback& callback)
  23     : BluetoothGattDescriptorClient::Properties(
  24           NULL,
  25           bluetooth_gatt_descriptor::kBluetoothGattDescriptorInterface,
  26           callback) {
  27 }
  28
  29 FakeBluetoothGattDescriptorClient::Properties::~Properties() {
  30 }
  31
  32 void FakeBluetoothGattDescriptorClient::Properties::Get(
  33     dbus::PropertyBase* property,
  34     dbus::PropertySet::GetCallback callback) {
  35   VLOG(1) << "Get " << property->name();
  36   callback.Run(true);
  37 }
  38
  39 void FakeBluetoothGattDescriptorClient::Properties::GetAll() {
  40   VLOG(1) << "GetAll";
  41 }
  42
  43 void FakeBluetoothGattDescriptorClient::Properties::Set(
  44     dbus::PropertyBase* property,
  45     dbus::PropertySet::SetCallback callback) {
  46   VLOG(1) << "Set " << property->name();
  47   callback.Run(false);
  48 }
  49
  50 FakeBluetoothGattDescriptorClient::DescriptorData::DescriptorData() {
  51 }
  52
  53 FakeBluetoothGattDescriptorClient::DescriptorData::~DescriptorData() {
  54 }
  55
  56 FakeBluetoothGattDescriptorClient::FakeBluetoothGattDescriptorClient()
  57     : weak_ptr_factory_(this) {
  58 }
  59
  60 FakeBluetoothGattDescriptorClient::~FakeBluetoothGattDescriptorClient() {
  61   for(PropertiesMap::iterator iter = properties_.begin(); iter !=
  62       properties_.end(); iter++)
  63     delete iter->second;
  64 }
  65
  66 void FakeBluetoothGattDescriptorClient::Init(dbus::Bus* bus) {
  67 }
  68
  69 void FakeBluetoothGattDescriptorClient::AddObserver(Observer* observer) {
  70   observers_.AddObserver(observer);
  71 }
  72
  73 void FakeBluetoothGattDescriptorClient::RemoveObserver(Observer* observer) {
  74   observers_.RemoveObserver(observer);
  75 }
  76
  77 std::vector<dbus::ObjectPath>
  78 FakeBluetoothGattDescriptorClient::GetDescriptors() {
  79   std::vector<dbus::ObjectPath> descriptors;
  80   for (PropertiesMap::const_iterator iter = properties_.begin();
  81        iter != properties_.end(); ++iter) {
  82     descriptors.push_back(iter->first);
  83   }
  84   return descriptors;
  85 }
  86
  87 FakeBluetoothGattDescriptorClient::Properties*
  88 FakeBluetoothGattDescriptorClient::GetProperties(
  89     const dbus::ObjectPath& object_path) {
  90   PropertiesMap::const_iterator iter = properties_.find(object_path);
  91   if (iter == properties_.end())
  92     return NULL;
  93   return iter->second->properties.get();
  94 }
  95
  96 void FakeBluetoothGattDescriptorClient::ReadValue(
  97     const dbus::ObjectPath& object_path,
  98     const ValueCallback& callback,
  99     const ErrorCallback& error_callback) {
 100   PropertiesMap::iterator iter = properties_.find(object_path);
 101   if (iter == properties_.end()) {
 102     error_callback.Run(kUnknownDescriptorError, "");
 103     return;
 104   }
 105
 106   // Assign the value of the descriptor as necessary
 107   Properties* properties = iter->second->properties.get();
 108   if (properties->uuid.value() == kClientCharacteristicConfigurationUUID) {
 109     BluetoothGattCharacteristicClient::Properties* chrc_props =
 110         DBusThreadManager::Get()
 111             ->GetBluetoothGattCharacteristicClient()
 112             ->GetProperties(properties->characteristic.value());
 113     DCHECK(chrc_props);
 114
 115     uint8_t value_byte = chrc_props->notifying.value() ? 0x01 : 0x00;
 116     const std::vector<uint8_t>& cur_value = properties->value.value();
 117
 118     if (!cur_value.size() || cur_value[0] != value_byte) {
 119       std::vector<uint8_t> value = {value_byte, 0x00};
 120       properties->value.ReplaceValue(value);
 121     }
 122   }
 123
 124   callback.Run(iter->second->properties->value.value());
 125 }
 126
 127 void FakeBluetoothGattDescriptorClient::WriteValue(
 128     const dbus::ObjectPath& object_path,
 129     const std::vector<uint8>& value,
 130     const base::Closure& callback,
 131     const ErrorCallback& error_callback) {
 132   if (properties_.find(object_path) == properties_.end()) {
 133     error_callback.Run(kUnknownDescriptorError, "");
 134     return;
 135   }
 136
 137   // Since the only fake descriptor is "Client Characteristic Configuration"
 138   // and BlueZ doesn't allow writing to it, return failure.
 139   error_callback.Run("org.bluez.Error.NotPermitted",
 140                      "Writing to the Client Characteristic Configuration "
 141                      "descriptor not allowed");
 142 }
 143
 144 dbus::ObjectPath FakeBluetoothGattDescriptorClient::ExposeDescriptor(
 145     const dbus::ObjectPath& characteristic_path,
 146     const std::string& uuid) {
 147   if (uuid != kClientCharacteristicConfigurationUUID) {
 148     VLOG(2) << "Unsupported UUID: " << uuid;
 149     return dbus::ObjectPath();
 150   }
 151
 152   // CCC descriptor is the only one supported at the moment.
 153   DCHECK(characteristic_path.IsValid());
 154   dbus::ObjectPath object_path(
 155       characteristic_path.value() + "/" +
 156       kClientCharacteristicConfigurationPathComponent);
 157   DCHECK(object_path.IsValid());
 158   PropertiesMap::const_iterator iter = properties_.find(object_path);
 159   if (iter != properties_.end()) {
 160     VLOG(1) << "Descriptor already exposed: " << object_path.value();
 161     return dbus::ObjectPath();
 162   }
 163
 164   Properties* properties = new Properties(base::Bind(
 165       &FakeBluetoothGattDescriptorClient::OnPropertyChanged,
 166       weak_ptr_factory_.GetWeakPtr(),
 167       object_path));
 168   properties->uuid.ReplaceValue(uuid);
 169   properties->characteristic.ReplaceValue(characteristic_path);
 170
 171   DescriptorData* data = new DescriptorData();
 172   data->properties.reset(properties);
 173
 174   properties_[object_path] = data;
 175
 176   NotifyDescriptorAdded(object_path);
 177
 178   return object_path;
 179 }
 180
 181 void FakeBluetoothGattDescriptorClient::HideDescriptor(
 182     const dbus::ObjectPath& descriptor_path) {
 183   PropertiesMap::iterator iter = properties_.find(descriptor_path);
 184   if (iter == properties_.end()) {
 185     VLOG(1) << "Descriptor not exposed: " << descriptor_path.value();
 186     return;
 187   }
 188
 189   NotifyDescriptorRemoved(descriptor_path);
 190
 191   delete iter->second;
 192   properties_.erase(iter);
 193 }
 194
 195 void FakeBluetoothGattDescriptorClient::OnPropertyChanged(
 196     const dbus::ObjectPath& object_path,
 197     const std::string& property_name) {
 198   VLOG(2) << "Descriptor property changed: " << object_path.value()
 199           << ": " << property_name;
 200
 201   FOR_EACH_OBSERVER(BluetoothGattDescriptorClient::Observer, observers_,
 202                     GattDescriptorPropertyChanged(object_path, property_name));
 203 }
 204
 205 void FakeBluetoothGattDescriptorClient::NotifyDescriptorAdded(
 206     const dbus::ObjectPath& object_path) {
 207   FOR_EACH_OBSERVER(BluetoothGattDescriptorClient::Observer, observers_,
 208                     GattDescriptorAdded(object_path));
 209 }
 210
 211 void FakeBluetoothGattDescriptorClient::NotifyDescriptorRemoved(
 212     const dbus::ObjectPath& object_path) {
 213   FOR_EACH_OBSERVER(BluetoothGattDescriptorClient::Observer, observers_,
 214                     GattDescriptorRemoved(object_path));
 215 }
 216
 217 }  // namespace chromeos