1 // Copyright 2016 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/dbus/bluetooth_gatt_characteristic_service_provider_impl.h"
6
7 #include <cstddef>
8
9 #include "base/bind.h"
10 #include "base/callback_helpers.h"
11 #include "base/logging.h"
12 #include "base/strings/string_util.h"
13 #include "device/bluetooth/bluetooth_gatt_characteristic.h"
14 #include "device/bluetooth/dbus/bluetooth_gatt_attribute_helpers.h"
15 #include "device/bluetooth/dbus/bluetooth_gatt_characteristic_delegate_wrapper.h"
16 #include "third_party/cros_system_api/dbus/service_constants.h"
17
18 namespace bluez {
19
20 namespace {
21
22 const char kErrorInvalidArgs[] = "org.freedesktop.DBus.Error.InvalidArgs";
23 const char kErrorPropertyReadOnly[] =
24 "org.freedesktop.DBus.Error.PropertyReadOnly";
25 const char kErrorFailed[] = "org.freedesktop.DBus.Error.Failed";
26
27 } // namespace
28
29 BluetoothGattCharacteristicServiceProviderImpl::
BluetoothGattCharacteristicServiceProviderImpl(dbus::Bus * bus,const dbus::ObjectPath & object_path,std::unique_ptr<BluetoothGattAttributeValueDelegate> delegate,const std::string & uuid,const std::vector<std::string> & flags,const dbus::ObjectPath & service_path)30 BluetoothGattCharacteristicServiceProviderImpl(
31 dbus::Bus* bus,
32 const dbus::ObjectPath& object_path,
33 std::unique_ptr<BluetoothGattAttributeValueDelegate> delegate,
34 const std::string& uuid,
35 const std::vector<std::string>& flags,
36 const dbus::ObjectPath& service_path)
37 : origin_thread_id_(base::PlatformThread::CurrentId()),
38 uuid_(uuid),
39 flags_(flags),
40 bus_(bus),
41 delegate_(std::move(delegate)),
42 object_path_(object_path),
43 service_path_(service_path) {
44 DVLOG(1) << "Created Bluetooth GATT characteristic: " << object_path.value()
45 << " UUID: " << uuid;
46 if (!bus_)
47 return;
48
49 DCHECK(delegate_);
50 DCHECK(!uuid_.empty());
51 DCHECK(object_path_.IsValid());
52 DCHECK(service_path_.IsValid());
53 DCHECK(base::StartsWith(object_path_.value(), service_path_.value() + "/",
54 base::CompareCase::SENSITIVE));
55
56 exported_object_ = bus_->GetExportedObject(object_path_);
57
58 // org.freedesktop.DBus.Properties interface:
59 exported_object_->ExportMethod(
60 dbus::kDBusPropertiesInterface, dbus::kDBusPropertiesGet,
61 base::Bind(&BluetoothGattCharacteristicServiceProviderImpl::Get,
62 weak_ptr_factory_.GetWeakPtr()),
63 base::Bind(&BluetoothGattCharacteristicServiceProviderImpl::OnExported,
64 weak_ptr_factory_.GetWeakPtr()));
65 exported_object_->ExportMethod(
66 dbus::kDBusPropertiesInterface, dbus::kDBusPropertiesSet,
67 base::Bind(&BluetoothGattCharacteristicServiceProviderImpl::Set,
68 weak_ptr_factory_.GetWeakPtr()),
69 base::Bind(&BluetoothGattCharacteristicServiceProviderImpl::OnExported,
70 weak_ptr_factory_.GetWeakPtr()));
71 exported_object_->ExportMethod(
72 dbus::kDBusPropertiesInterface, dbus::kDBusPropertiesGetAll,
73 base::Bind(&BluetoothGattCharacteristicServiceProviderImpl::GetAll,
74 weak_ptr_factory_.GetWeakPtr()),
75 base::Bind(&BluetoothGattCharacteristicServiceProviderImpl::OnExported,
76 weak_ptr_factory_.GetWeakPtr()));
77
78 // org.bluez.GattCharacteristic1 interface:
79 exported_object_->ExportMethod(
80 bluetooth_gatt_characteristic::kBluetoothGattCharacteristicInterface,
81 bluetooth_gatt_characteristic::kReadValue,
82 base::Bind(&BluetoothGattCharacteristicServiceProviderImpl::ReadValue,
83 weak_ptr_factory_.GetWeakPtr()),
84 base::Bind(&BluetoothGattCharacteristicServiceProviderImpl::OnExported,
85 weak_ptr_factory_.GetWeakPtr()));
86 exported_object_->ExportMethod(
87 bluetooth_gatt_characteristic::kBluetoothGattCharacteristicInterface,
88 bluetooth_gatt_characteristic::kWriteValue,
89 base::Bind(&BluetoothGattCharacteristicServiceProviderImpl::WriteValue,
90 weak_ptr_factory_.GetWeakPtr()),
91 base::Bind(&BluetoothGattCharacteristicServiceProviderImpl::OnExported,
92 weak_ptr_factory_.GetWeakPtr()));
93 exported_object_->ExportMethod(
94 bluetooth_gatt_characteristic::kBluetoothGattCharacteristicInterface,
95 bluetooth_gatt_characteristic::kPrepareWriteValue,
96 base::Bind(
97 &BluetoothGattCharacteristicServiceProviderImpl::PrepareWriteValue,
98 weak_ptr_factory_.GetWeakPtr()),
99 base::Bind(&BluetoothGattCharacteristicServiceProviderImpl::OnExported,
100 weak_ptr_factory_.GetWeakPtr()));
101 exported_object_->ExportMethod(
102 bluetooth_gatt_characteristic::kBluetoothGattCharacteristicInterface,
103 bluetooth_gatt_characteristic::kStartNotify,
104 base::Bind(&BluetoothGattCharacteristicServiceProviderImpl::StartNotify,
105 weak_ptr_factory_.GetWeakPtr()),
106 base::Bind(&BluetoothGattCharacteristicServiceProviderImpl::OnExported,
107 weak_ptr_factory_.GetWeakPtr()));
108 exported_object_->ExportMethod(
109 bluetooth_gatt_characteristic::kBluetoothGattCharacteristicInterface,
110 bluetooth_gatt_characteristic::kStopNotify,
111 base::Bind(&BluetoothGattCharacteristicServiceProviderImpl::StopNotify,
112 weak_ptr_factory_.GetWeakPtr()),
113 base::Bind(&BluetoothGattCharacteristicServiceProviderImpl::OnExported,
114 weak_ptr_factory_.GetWeakPtr()));
115 }
116
117 BluetoothGattCharacteristicServiceProviderImpl::
~BluetoothGattCharacteristicServiceProviderImpl()118 ~BluetoothGattCharacteristicServiceProviderImpl() {
119 DVLOG(1) << "Cleaning up Bluetooth GATT characteristic: "
120 << object_path_.value();
121 if (bus_)
122 bus_->UnregisterExportedObject(object_path_);
123 }
124
SendValueChanged(const std::vector<uint8_t> & value)125 void BluetoothGattCharacteristicServiceProviderImpl::SendValueChanged(
126 const std::vector<uint8_t>& value) {
127 // Running a test, don't actually try to write to use DBus.
128 if (!bus_)
129 return;
130
131 DVLOG(2) << "Emitting a PropertiesChanged signal for characteristic value.";
132 dbus::Signal signal(dbus::kDBusPropertiesInterface,
133 dbus::kDBusPropertiesChangedSignal);
134 dbus::MessageWriter writer(&signal);
135 dbus::MessageWriter array_writer(nullptr);
136 dbus::MessageWriter dict_entry_writer(nullptr);
137 dbus::MessageWriter variant_writer(nullptr);
138
139 // interface_name
140 writer.AppendString(
141 bluetooth_gatt_characteristic::kBluetoothGattCharacteristicInterface);
142
143 // changed_properties
144 writer.OpenArray("{sv}", &array_writer);
145 array_writer.OpenDictEntry(&dict_entry_writer);
146 dict_entry_writer.AppendString(bluetooth_gatt_characteristic::kValueProperty);
147 dict_entry_writer.OpenVariant("ay", &variant_writer);
148 variant_writer.AppendArrayOfBytes(value.data(), value.size());
149 dict_entry_writer.CloseContainer(&variant_writer);
150 array_writer.CloseContainer(&dict_entry_writer);
151 writer.CloseContainer(&array_writer);
152
153 // invalidated_properties.
154 writer.OpenArray("s", &array_writer);
155 writer.CloseContainer(&array_writer);
156
157 exported_object_->SendSignal(&signal);
158 }
159
160 // Returns true if the current thread is on the origin thread.
OnOriginThread()161 bool BluetoothGattCharacteristicServiceProviderImpl::OnOriginThread() {
162 return base::PlatformThread::CurrentId() == origin_thread_id_;
163 }
164
Get(dbus::MethodCall * method_call,dbus::ExportedObject::ResponseSender response_sender)165 void BluetoothGattCharacteristicServiceProviderImpl::Get(
166 dbus::MethodCall* method_call,
167 dbus::ExportedObject::ResponseSender response_sender) {
168 DVLOG(2) << "BluetoothGattCharacteristicServiceProvider::Get: "
169 << object_path_.value();
170 DCHECK(OnOriginThread());
171
172 dbus::MessageReader reader(method_call);
173
174 std::string interface_name;
175 std::string property_name;
176 if (!reader.PopString(&interface_name) || !reader.PopString(&property_name) ||
177 reader.HasMoreData()) {
178 std::unique_ptr<dbus::ErrorResponse> error_response =
179 dbus::ErrorResponse::FromMethodCall(method_call, kErrorInvalidArgs,
180 "Expected 'ss'.");
181 std::move(response_sender).Run(std::move(error_response));
182 return;
183 }
184
185 // Only the GATT characteristic interface is supported.
186 if (interface_name !=
187 bluetooth_gatt_characteristic::kBluetoothGattCharacteristicInterface) {
188 std::unique_ptr<dbus::ErrorResponse> error_response =
189 dbus::ErrorResponse::FromMethodCall(
190 method_call, kErrorInvalidArgs,
191 "No such interface: '" + interface_name + "'.");
192 std::move(response_sender).Run(std::move(error_response));
193 return;
194 }
195
196 std::unique_ptr<dbus::Response> response =
197 dbus::Response::FromMethodCall(method_call);
198 dbus::MessageWriter writer(response.get());
199 dbus::MessageWriter variant_writer(nullptr);
200
201 if (property_name == bluetooth_gatt_characteristic::kUUIDProperty) {
202 writer.OpenVariant("s", &variant_writer);
203 variant_writer.AppendString(uuid_);
204 writer.CloseContainer(&variant_writer);
205 } else if (property_name == bluetooth_gatt_characteristic::kServiceProperty) {
206 writer.OpenVariant("o", &variant_writer);
207 variant_writer.AppendObjectPath(service_path_);
208 writer.CloseContainer(&variant_writer);
209 } else if (property_name == bluetooth_gatt_characteristic::kFlagsProperty) {
210 writer.OpenVariant("as", &variant_writer);
211 variant_writer.AppendArrayOfStrings(flags_);
212 writer.CloseContainer(&variant_writer);
213 } else {
214 response = dbus::ErrorResponse::FromMethodCall(
215 method_call, kErrorInvalidArgs,
216 "No such property: '" + property_name + "'.");
217 }
218
219 std::move(response_sender).Run(std::move(response));
220 }
221
Set(dbus::MethodCall * method_call,dbus::ExportedObject::ResponseSender response_sender)222 void BluetoothGattCharacteristicServiceProviderImpl::Set(
223 dbus::MethodCall* method_call,
224 dbus::ExportedObject::ResponseSender response_sender) {
225 DVLOG(2) << "BluetoothGattCharacteristicServiceProviderImpl::Set: "
226 << object_path_.value();
227 DCHECK(OnOriginThread());
228 // All of the properties on this interface are read-only, so just return
229 // error.
230 std::unique_ptr<dbus::ErrorResponse> error_response =
231 dbus::ErrorResponse::FromMethodCall(method_call, kErrorPropertyReadOnly,
232 "All properties are read-only.");
233 std::move(response_sender).Run(std::move(error_response));
234 }
235
GetAll(dbus::MethodCall * method_call,dbus::ExportedObject::ResponseSender response_sender)236 void BluetoothGattCharacteristicServiceProviderImpl::GetAll(
237 dbus::MethodCall* method_call,
238 dbus::ExportedObject::ResponseSender response_sender) {
239 DVLOG(2) << "BluetoothGattCharacteristicServiceProvider::GetAll: "
240 << object_path_.value();
241 DCHECK(OnOriginThread());
242
243 dbus::MessageReader reader(method_call);
244
245 std::string interface_name;
246 if (!reader.PopString(&interface_name) || reader.HasMoreData()) {
247 std::unique_ptr<dbus::ErrorResponse> error_response =
248 dbus::ErrorResponse::FromMethodCall(method_call, kErrorInvalidArgs,
249 "Expected 's'.");
250 std::move(response_sender).Run(std::move(error_response));
251 return;
252 }
253
254 // Only the GATT characteristic interface is supported.
255 if (interface_name !=
256 bluetooth_gatt_characteristic::kBluetoothGattCharacteristicInterface) {
257 std::unique_ptr<dbus::ErrorResponse> error_response =
258 dbus::ErrorResponse::FromMethodCall(
259 method_call, kErrorInvalidArgs,
260 "No such interface: '" + interface_name + "'.");
261 std::move(response_sender).Run(std::move(error_response));
262 return;
263 }
264
265 std::unique_ptr<dbus::Response> response =
266 dbus::Response::FromMethodCall(method_call);
267 dbus::MessageWriter writer(response.get());
268 WriteProperties(&writer);
269 std::move(response_sender).Run(std::move(response));
270 }
271
ReadValue(dbus::MethodCall * method_call,dbus::ExportedObject::ResponseSender response_sender)272 void BluetoothGattCharacteristicServiceProviderImpl::ReadValue(
273 dbus::MethodCall* method_call,
274 dbus::ExportedObject::ResponseSender response_sender) {
275 DVLOG(3) << "BluetoothGattCharacteristicServiceProvider::ReadValue: "
276 << object_path_.value();
277 DCHECK(OnOriginThread());
278
279 dbus::MessageReader reader(method_call);
280 std::map<std::string, dbus::MessageReader> options;
281 dbus::ObjectPath device_path;
282 ReadOptions(&reader, &options);
283 auto it = options.find(bluetooth_gatt_characteristic::kOptionDevice);
284 if (it != options.end())
285 it->second.PopObjectPath(&device_path);
286
287 if (device_path.value().empty()) {
288 LOG(WARNING) << "ReadValue called with incorrect parameters: "
289 << method_call->ToString();
290 // Continue on with an empty device path. This will return a null device to
291 // the delegate, which should know how to handle it.
292 }
293
294 // GetValue() promises to only call either the success or error callback.
295 auto response_sender_adapted =
296 base::AdaptCallbackForRepeating(std::move(response_sender));
297
298 DCHECK(delegate_);
299 delegate_->GetValue(
300 device_path,
301 base::BindOnce(
302 &BluetoothGattCharacteristicServiceProviderImpl::OnReadValue,
303 weak_ptr_factory_.GetWeakPtr(), method_call, response_sender_adapted),
304 base::BindOnce(&BluetoothGattCharacteristicServiceProviderImpl::OnFailure,
305 weak_ptr_factory_.GetWeakPtr(), method_call,
306 response_sender_adapted));
307 }
308
WriteValue(dbus::MethodCall * method_call,dbus::ExportedObject::ResponseSender response_sender)309 void BluetoothGattCharacteristicServiceProviderImpl::WriteValue(
310 dbus::MethodCall* method_call,
311 dbus::ExportedObject::ResponseSender response_sender) {
312 DVLOG(3) << "BluetoothGattCharacteristicServiceProvider::WriteValue: "
313 << object_path_.value();
314 DCHECK(OnOriginThread());
315
316 dbus::MessageReader reader(method_call);
317 const uint8_t* bytes = nullptr;
318 size_t length = 0;
319
320 std::vector<uint8_t> value;
321 if (!reader.PopArrayOfBytes(&bytes, &length)) {
322 LOG(WARNING) << "Error reading value parameter. WriteValue called with "
323 "incorrect parameters: "
324 << method_call->ToString();
325 }
326 if (bytes)
327 value.assign(bytes, bytes + length);
328
329 std::map<std::string, dbus::MessageReader> options;
330 dbus::ObjectPath device_path;
331 ReadOptions(&reader, &options);
332 auto it = options.find(bluetooth_gatt_characteristic::kOptionDevice);
333 if (it != options.end())
334 it->second.PopObjectPath(&device_path);
335
336 if (device_path.value().empty()) {
337 LOG(WARNING) << "WriteValue called with incorrect parameters: "
338 << method_call->ToString();
339 // Continue on with an empty device path. This will return a null device to
340 // the delegate, which should know how to handle it.
341 }
342
343 // SetValue() promises to only call either the success or error callback.
344 auto response_sender_adapted =
345 base::AdaptCallbackForRepeating(std::move(response_sender));
346
347 DCHECK(delegate_);
348 delegate_->SetValue(
349 device_path, value,
350 base::BindOnce(
351 &BluetoothGattCharacteristicServiceProviderImpl::OnWriteValue,
352 weak_ptr_factory_.GetWeakPtr(), method_call, response_sender_adapted),
353 base::BindOnce(&BluetoothGattCharacteristicServiceProviderImpl::OnFailure,
354 weak_ptr_factory_.GetWeakPtr(), method_call,
355 response_sender_adapted));
356 }
357
PrepareWriteValue(dbus::MethodCall * method_call,dbus::ExportedObject::ResponseSender response_sender)358 void BluetoothGattCharacteristicServiceProviderImpl::PrepareWriteValue(
359 dbus::MethodCall* method_call,
360 dbus::ExportedObject::ResponseSender response_sender) {
361 DVLOG(3) << "BluetoothGattCharacteristicServiceProvider::PrepareWriteValue: "
362 << object_path_.value();
363 DCHECK(OnOriginThread());
364
365 dbus::MessageReader reader(method_call);
366 const uint8_t* bytes = nullptr;
367 size_t length = 0;
368
369 std::vector<uint8_t> value;
370 if (!reader.PopArrayOfBytes(&bytes, &length)) {
371 LOG(WARNING) << "Error reading value parameter. PrepareWriteValue called "
372 << "with incorrect parameters: " << method_call->ToString();
373 }
374 if (bytes)
375 value.assign(bytes, bytes + length);
376
377 std::map<std::string, dbus::MessageReader> options;
378 dbus::ObjectPath device_path;
379 uint16_t offset = 0;
380 bool has_subsequent_write = false;
381 ReadOptions(&reader, &options);
382 auto it = options.find(bluetooth_gatt_characteristic::kOptionDevice);
383 if (it != options.end())
384 it->second.PopObjectPath(&device_path);
385 it = options.find(bluetooth_gatt_characteristic::kOptionOffset);
386 if (it != options.end())
387 it->second.PopUint16(&offset);
388 it = options.find(bluetooth_gatt_characteristic::kOptionHasSubsequentWrite);
389 if (it != options.end())
390 it->second.PopBool(&has_subsequent_write);
391
392 if (device_path.value().empty()) {
393 LOG(WARNING) << "PrepareWriteValue called with incorrect parameters: "
394 << method_call->ToString();
395 // Continue on with an empty device path. This will return a null device to
396 // the delegate, which should know how to handle it.
397 }
398
399 // PrepareSetValue() promises to only call either the success or error
400 // callback.
401 auto response_sender_adapted =
402 base::AdaptCallbackForRepeating(std::move(response_sender));
403
404 DCHECK(delegate_);
405 delegate_->PrepareSetValue(
406 device_path, value, offset, has_subsequent_write,
407 base::Bind(&BluetoothGattCharacteristicServiceProviderImpl::OnWriteValue,
408 weak_ptr_factory_.GetWeakPtr(), method_call,
409 response_sender_adapted),
410 base::Bind(&BluetoothGattCharacteristicServiceProviderImpl::OnFailure,
411 weak_ptr_factory_.GetWeakPtr(), method_call,
412 response_sender_adapted));
413 }
414
StartNotify(dbus::MethodCall * method_call,dbus::ExportedObject::ResponseSender response_sender)415 void BluetoothGattCharacteristicServiceProviderImpl::StartNotify(
416 dbus::MethodCall* method_call,
417 dbus::ExportedObject::ResponseSender response_sender) {
418 DVLOG(3) << "BluetoothGattCharacteristicServiceProvider::StartNotify: "
419 << object_path_.value();
420 DCHECK(OnOriginThread());
421
422 dbus::MessageReader reader(method_call);
423 uint8_t cccd_value = 0;
424 if (!reader.PopByte(&cccd_value)) {
425 LOG(WARNING) << "Error reading cccd_value parameter. StartNotify called "
426 << "with incorrect parameters: " << method_call->ToString();
427 }
428
429 std::map<std::string, dbus::MessageReader> options;
430 dbus::ObjectPath device_path;
431 ReadOptions(&reader, &options);
432 auto it = options.find(bluetooth_gatt_characteristic::kOptionDevice);
433 if (it != options.end())
434 it->second.PopObjectPath(&device_path);
435
436 DCHECK(delegate_);
437 delegate_->StartNotifications(
438 device_path,
439 cccd_value == static_cast<uint8_t>(device::BluetoothGattCharacteristic::
440 NotificationType::kIndication)
441 ? device::BluetoothGattCharacteristic::NotificationType::kIndication
442 : device::BluetoothGattCharacteristic::NotificationType::
443 kNotification);
444 }
445
StopNotify(dbus::MethodCall * method_call,dbus::ExportedObject::ResponseSender response_sender)446 void BluetoothGattCharacteristicServiceProviderImpl::StopNotify(
447 dbus::MethodCall* method_call,
448 dbus::ExportedObject::ResponseSender response_sender) {
449 DVLOG(3) << "BluetoothGattCharacteristicServiceProvider::StopNotify: "
450 << object_path_.value();
451 DCHECK(OnOriginThread());
452
453 dbus::MessageReader reader(method_call);
454 std::map<std::string, dbus::MessageReader> options;
455 dbus::ObjectPath device_path;
456 ReadOptions(&reader, &options);
457 auto it = options.find(bluetooth_gatt_characteristic::kOptionDevice);
458 if (it != options.end())
459 it->second.PopObjectPath(&device_path);
460
461 DCHECK(delegate_);
462 delegate_->StopNotifications(device_path);
463 }
464
OnExported(const std::string & interface_name,const std::string & method_name,bool success)465 void BluetoothGattCharacteristicServiceProviderImpl::OnExported(
466 const std::string& interface_name,
467 const std::string& method_name,
468 bool success) {
469 DVLOG_IF(1, !success) << "Failed to export " << interface_name << "."
470 << method_name;
471 }
472
OnReadValue(dbus::MethodCall * method_call,dbus::ExportedObject::ResponseSender response_sender,const std::vector<uint8_t> & value)473 void BluetoothGattCharacteristicServiceProviderImpl::OnReadValue(
474 dbus::MethodCall* method_call,
475 dbus::ExportedObject::ResponseSender response_sender,
476 const std::vector<uint8_t>& value) {
477 DVLOG(3) << "Characteristic value obtained from delegate. Responding to "
478 "ReadValue.";
479
480 std::unique_ptr<dbus::Response> response =
481 dbus::Response::FromMethodCall(method_call);
482 dbus::MessageWriter writer(response.get());
483 writer.AppendArrayOfBytes(value.data(), value.size());
484 std::move(response_sender).Run(std::move(response));
485 }
486
OnWriteValue(dbus::MethodCall * method_call,dbus::ExportedObject::ResponseSender response_sender)487 void BluetoothGattCharacteristicServiceProviderImpl::OnWriteValue(
488 dbus::MethodCall* method_call,
489 dbus::ExportedObject::ResponseSender response_sender) {
490 DVLOG(3) << "Responding to WriteValue.";
491
492 std::unique_ptr<dbus::Response> response =
493 dbus::Response::FromMethodCall(method_call);
494 std::move(response_sender).Run(std::move(response));
495 }
496
WriteProperties(dbus::MessageWriter * writer)497 void BluetoothGattCharacteristicServiceProviderImpl::WriteProperties(
498 dbus::MessageWriter* writer) {
499 dbus::MessageWriter array_writer(nullptr);
500 dbus::MessageWriter dict_entry_writer(nullptr);
501 dbus::MessageWriter variant_writer(nullptr);
502
503 writer->OpenArray("{sv}", &array_writer);
504
505 // UUID:
506 array_writer.OpenDictEntry(&dict_entry_writer);
507 dict_entry_writer.AppendString(bluetooth_gatt_characteristic::kUUIDProperty);
508 dict_entry_writer.AppendVariantOfString(uuid_);
509 array_writer.CloseContainer(&dict_entry_writer);
510
511 // Service:
512 array_writer.OpenDictEntry(&dict_entry_writer);
513 dict_entry_writer.AppendString(
514 bluetooth_gatt_characteristic::kServiceProperty);
515 dict_entry_writer.AppendVariantOfObjectPath(service_path_);
516 array_writer.CloseContainer(&dict_entry_writer);
517
518 // Flags:
519 array_writer.OpenDictEntry(&dict_entry_writer);
520 dict_entry_writer.AppendString(bluetooth_gatt_characteristic::kFlagsProperty);
521 dict_entry_writer.OpenVariant("as", &variant_writer);
522 variant_writer.AppendArrayOfStrings(flags_);
523 dict_entry_writer.CloseContainer(&variant_writer);
524 array_writer.CloseContainer(&dict_entry_writer);
525
526 writer->CloseContainer(&array_writer);
527 }
528
OnFailure(dbus::MethodCall * method_call,dbus::ExportedObject::ResponseSender response_sender)529 void BluetoothGattCharacteristicServiceProviderImpl::OnFailure(
530 dbus::MethodCall* method_call,
531 dbus::ExportedObject::ResponseSender response_sender) {
532 DVLOG(2) << "Failed to get/set characteristic value. Report error.";
533 std::unique_ptr<dbus::ErrorResponse> error_response =
534 dbus::ErrorResponse::FromMethodCall(
535 method_call, kErrorFailed, "Failed to get/set characteristic value.");
536 std::move(response_sender).Run(std::move(error_response));
537 }
538
539 const dbus::ObjectPath&
object_path() const540 BluetoothGattCharacteristicServiceProviderImpl::object_path() const {
541 return object_path_;
542 }
543
544 } // namespace bluez
545