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1 // Copyright 2015 The Chromium Authors. All rights reserved. | 1 // Copyright 2015 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #include "components/proximity_auth/ble/bluetooth_low_energy_connection.h" | 5 #include "components/proximity_auth/ble/bluetooth_low_energy_connection.h" |
6 | 6 |
7 #include <utility> | 7 #include <utility> |
8 | 8 |
9 #include "base/bind.h" | 9 #include "base/bind.h" |
10 #include "base/location.h" | 10 #include "base/location.h" |
11 #include "base/memory/ref_counted.h" | 11 #include "base/memory/ref_counted.h" |
12 #include "base/memory/weak_ptr.h" | 12 #include "base/memory/weak_ptr.h" |
13 #include "base/task_runner.h" | 13 #include "base/task_runner.h" |
14 #include "base/threading/thread_task_runner_handle.h" | 14 #include "base/threading/thread_task_runner_handle.h" |
15 #include "base/time/time.h" | 15 #include "base/time/time.h" |
16 #include "components/proximity_auth/ble/bluetooth_low_energy_characteristics_fin
der.h" | 16 #include "components/cryptauth/ble/bluetooth_low_energy_characteristics_finder.h
" |
17 #include "components/proximity_auth/ble/fake_wire_message.h" | 17 #include "components/cryptauth/ble/fake_wire_message.h" |
18 #include "components/proximity_auth/bluetooth_throttler.h" | 18 #include "components/cryptauth/bluetooth_throttler.h" |
19 #include "components/proximity_auth/connection_finder.h" | 19 #include "components/cryptauth/connection.h" |
| 20 #include "components/cryptauth/connection_finder.h" |
| 21 #include "components/cryptauth/wire_message.h" |
20 #include "components/proximity_auth/logging/logging.h" | 22 #include "components/proximity_auth/logging/logging.h" |
21 #include "components/proximity_auth/wire_message.h" | |
22 #include "device/bluetooth/bluetooth_adapter.h" | 23 #include "device/bluetooth/bluetooth_adapter.h" |
23 #include "device/bluetooth/bluetooth_device.h" | 24 #include "device/bluetooth/bluetooth_device.h" |
24 #include "device/bluetooth/bluetooth_gatt_connection.h" | 25 #include "device/bluetooth/bluetooth_gatt_connection.h" |
25 #include "device/bluetooth/bluetooth_gatt_notify_session.h" | 26 #include "device/bluetooth/bluetooth_gatt_notify_session.h" |
26 #include "device/bluetooth/bluetooth_remote_gatt_characteristic.h" | 27 #include "device/bluetooth/bluetooth_remote_gatt_characteristic.h" |
27 #include "device/bluetooth/bluetooth_uuid.h" | 28 #include "device/bluetooth/bluetooth_uuid.h" |
28 | 29 |
29 using device::BluetoothAdapter; | 30 using device::BluetoothAdapter; |
30 using device::BluetoothDevice; | 31 using device::BluetoothDevice; |
31 using device::BluetoothGattConnection; | 32 using device::BluetoothGattConnection; |
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49 // The maximum number of bytes written in a remote characteristic with a single | 50 // The maximum number of bytes written in a remote characteristic with a single |
50 // write request. This is not the connection MTU, we are assuming that the | 51 // write request. This is not the connection MTU, we are assuming that the |
51 // remote device allows for writes larger than MTU. | 52 // remote device allows for writes larger than MTU. |
52 const int kMaxChunkSize = 500; | 53 const int kMaxChunkSize = 500; |
53 } // namespace | 54 } // namespace |
54 | 55 |
55 BluetoothLowEnergyConnection::BluetoothLowEnergyConnection( | 56 BluetoothLowEnergyConnection::BluetoothLowEnergyConnection( |
56 const cryptauth::RemoteDevice& device, | 57 const cryptauth::RemoteDevice& device, |
57 scoped_refptr<device::BluetoothAdapter> adapter, | 58 scoped_refptr<device::BluetoothAdapter> adapter, |
58 const BluetoothUUID remote_service_uuid, | 59 const BluetoothUUID remote_service_uuid, |
59 BluetoothThrottler* bluetooth_throttler, | 60 cryptauth::BluetoothThrottler* bluetooth_throttler, |
60 int max_number_of_write_attempts) | 61 int max_number_of_write_attempts) |
61 : Connection(device), | 62 : cryptauth::Connection(device), |
62 adapter_(adapter), | 63 adapter_(adapter), |
63 remote_service_({remote_service_uuid, ""}), | 64 remote_service_({remote_service_uuid, ""}), |
64 to_peripheral_char_({BluetoothUUID(kToPeripheralCharUUID), ""}), | 65 to_peripheral_char_({BluetoothUUID(kToPeripheralCharUUID), ""}), |
65 from_peripheral_char_({BluetoothUUID(kFromPeripheralCharUUID), ""}), | 66 from_peripheral_char_({BluetoothUUID(kFromPeripheralCharUUID), ""}), |
66 bluetooth_throttler_(bluetooth_throttler), | 67 bluetooth_throttler_(bluetooth_throttler), |
67 task_runner_(base::ThreadTaskRunnerHandle::Get()), | 68 task_runner_(base::ThreadTaskRunnerHandle::Get()), |
68 sub_status_(SubStatus::DISCONNECTED), | 69 sub_status_(SubStatus::DISCONNECTED), |
69 receiving_bytes_(false), | 70 receiving_bytes_(false), |
70 write_remote_characteristic_pending_(false), | 71 write_remote_characteristic_pending_(false), |
71 max_number_of_write_attempts_(max_number_of_write_attempts), | 72 max_number_of_write_attempts_(max_number_of_write_attempts), |
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142 // Only transition to the DISCONNECTED state after perfoming all necessary | 143 // Only transition to the DISCONNECTED state after perfoming all necessary |
143 // operations. Otherwise, it'll trigger observers that can pontentially | 144 // operations. Otherwise, it'll trigger observers that can pontentially |
144 // destroy the current instance (causing a crash). | 145 // destroy the current instance (causing a crash). |
145 SetSubStatus(SubStatus::DISCONNECTED); | 146 SetSubStatus(SubStatus::DISCONNECTED); |
146 } | 147 } |
147 } | 148 } |
148 | 149 |
149 void BluetoothLowEnergyConnection::SetSubStatus(SubStatus new_sub_status) { | 150 void BluetoothLowEnergyConnection::SetSubStatus(SubStatus new_sub_status) { |
150 sub_status_ = new_sub_status; | 151 sub_status_ = new_sub_status; |
151 | 152 |
152 // Sets the status of parent class proximity_auth::Connection accordingly. | 153 // Sets the status of parent class cryptauth::Connection accordingly. |
153 if (new_sub_status == SubStatus::CONNECTED) { | 154 if (new_sub_status == SubStatus::CONNECTED) { |
154 SetStatus(CONNECTED); | 155 SetStatus(CONNECTED); |
155 } else if (new_sub_status == SubStatus::DISCONNECTED) { | 156 } else if (new_sub_status == SubStatus::DISCONNECTED) { |
156 SetStatus(DISCONNECTED); | 157 SetStatus(DISCONNECTED); |
157 } else { | 158 } else { |
158 SetStatus(IN_PROGRESS); | 159 SetStatus(IN_PROGRESS); |
159 } | 160 } |
160 } | 161 } |
161 | 162 |
162 void BluetoothLowEnergyConnection::SetTaskRunnerForTesting( | 163 void BluetoothLowEnergyConnection::SetTaskRunnerForTesting( |
163 scoped_refptr<base::TaskRunner> task_runner) { | 164 scoped_refptr<base::TaskRunner> task_runner) { |
164 task_runner_ = task_runner; | 165 task_runner_ = task_runner; |
165 } | 166 } |
166 | 167 |
167 void BluetoothLowEnergyConnection::SendMessageImpl( | 168 void BluetoothLowEnergyConnection::SendMessageImpl( |
168 std::unique_ptr<WireMessage> message) { | 169 std::unique_ptr<cryptauth::WireMessage> message) { |
169 PA_LOG(INFO) << "Sending message " << message->Serialize(); | 170 PA_LOG(INFO) << "Sending message " << message->Serialize(); |
170 std::string serialized_msg = message->Serialize(); | 171 std::string serialized_msg = message->Serialize(); |
171 | 172 |
172 // [First write]: Build a header with the [send signal] + [size of the | 173 // [First write]: Build a header with the [send signal] + [size of the |
173 // message]. | 174 // message]. |
174 WriteRequest write_request = BuildWriteRequest( | 175 WriteRequest write_request = BuildWriteRequest( |
175 ToByteVector(static_cast<uint32_t>(ControlSignal::kSendSignal)), | 176 ToByteVector(static_cast<uint32_t>(ControlSignal::kSendSignal)), |
176 ToByteVector(static_cast<uint32_t>(serialized_msg.size())), false); | 177 ToByteVector(static_cast<uint32_t>(serialized_msg.size())), false); |
177 | 178 |
178 // [First write]: Fill the it with a prefix of |serialized_msg| up to | 179 // [First write]: Fill the it with a prefix of |serialized_msg| up to |
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350 | 351 |
351 gatt_connection_ = std::move(gatt_connection); | 352 gatt_connection_ = std::move(gatt_connection); |
352 SetSubStatus(SubStatus::WAITING_CHARACTERISTICS); | 353 SetSubStatus(SubStatus::WAITING_CHARACTERISTICS); |
353 characteristic_finder_.reset(CreateCharacteristicsFinder( | 354 characteristic_finder_.reset(CreateCharacteristicsFinder( |
354 base::Bind(&BluetoothLowEnergyConnection::OnCharacteristicsFound, | 355 base::Bind(&BluetoothLowEnergyConnection::OnCharacteristicsFound, |
355 weak_ptr_factory_.GetWeakPtr()), | 356 weak_ptr_factory_.GetWeakPtr()), |
356 base::Bind(&BluetoothLowEnergyConnection::OnCharacteristicsFinderError, | 357 base::Bind(&BluetoothLowEnergyConnection::OnCharacteristicsFinderError, |
357 weak_ptr_factory_.GetWeakPtr()))); | 358 weak_ptr_factory_.GetWeakPtr()))); |
358 } | 359 } |
359 | 360 |
360 BluetoothLowEnergyCharacteristicsFinder* | 361 cryptauth::BluetoothLowEnergyCharacteristicsFinder* |
361 BluetoothLowEnergyConnection::CreateCharacteristicsFinder( | 362 BluetoothLowEnergyConnection::CreateCharacteristicsFinder( |
362 const BluetoothLowEnergyCharacteristicsFinder::SuccessCallback& | 363 const cryptauth::BluetoothLowEnergyCharacteristicsFinder::SuccessCallback& |
363 success_callback, | 364 success_callback, |
364 const BluetoothLowEnergyCharacteristicsFinder::ErrorCallback& | 365 const cryptauth::BluetoothLowEnergyCharacteristicsFinder::ErrorCallback& |
365 error_callback) { | 366 error_callback) { |
366 return new BluetoothLowEnergyCharacteristicsFinder( | 367 return new cryptauth::BluetoothLowEnergyCharacteristicsFinder( |
367 adapter_, GetRemoteDevice(), remote_service_, to_peripheral_char_, | 368 adapter_, GetRemoteDevice(), remote_service_, to_peripheral_char_, |
368 from_peripheral_char_, success_callback, error_callback); | 369 from_peripheral_char_, success_callback, error_callback); |
369 } | 370 } |
370 | 371 |
371 void BluetoothLowEnergyConnection::OnCharacteristicsFound( | 372 void BluetoothLowEnergyConnection::OnCharacteristicsFound( |
372 const RemoteAttribute& service, | 373 const cryptauth::RemoteAttribute& service, |
373 const RemoteAttribute& to_peripheral_char, | 374 const cryptauth::RemoteAttribute& to_peripheral_char, |
374 const RemoteAttribute& from_peripheral_char) { | 375 const cryptauth::RemoteAttribute& from_peripheral_char) { |
375 PA_LOG(INFO) << "Remote chacteristics found."; | 376 PA_LOG(INFO) << "Remote chacteristics found."; |
376 PrintTimeElapsed(); | 377 PrintTimeElapsed(); |
377 | 378 |
378 DCHECK(sub_status() == SubStatus::WAITING_CHARACTERISTICS); | 379 DCHECK(sub_status() == SubStatus::WAITING_CHARACTERISTICS); |
379 remote_service_ = service; | 380 remote_service_ = service; |
380 to_peripheral_char_ = to_peripheral_char; | 381 to_peripheral_char_ = to_peripheral_char; |
381 from_peripheral_char_ = from_peripheral_char; | 382 from_peripheral_char_ = from_peripheral_char; |
382 | 383 |
383 SetSubStatus(SubStatus::CHARACTERISTICS_FOUND); | 384 SetSubStatus(SubStatus::CHARACTERISTICS_FOUND); |
384 StartNotifySession(); | 385 StartNotifySession(); |
385 } | 386 } |
386 | 387 |
387 void BluetoothLowEnergyConnection::OnCharacteristicsFinderError( | 388 void BluetoothLowEnergyConnection::OnCharacteristicsFinderError( |
388 const RemoteAttribute& to_peripheral_char, | 389 const cryptauth::RemoteAttribute& to_peripheral_char, |
389 const RemoteAttribute& from_peripheral_char) { | 390 const cryptauth::RemoteAttribute& from_peripheral_char) { |
390 DCHECK(sub_status() == SubStatus::WAITING_CHARACTERISTICS); | 391 DCHECK(sub_status() == SubStatus::WAITING_CHARACTERISTICS); |
391 PA_LOG(WARNING) << "Connection error, missing characteristics for SmartLock " | 392 PA_LOG(WARNING) << "Connection error, missing characteristics for SmartLock " |
392 "service.\n" | 393 "service.\n" |
393 << (to_peripheral_char.id.empty() | 394 << (to_peripheral_char.id.empty() |
394 ? to_peripheral_char.uuid.canonical_value() | 395 ? to_peripheral_char.uuid.canonical_value() |
395 : "") | 396 : "") |
396 << (from_peripheral_char.id.empty() | 397 << (from_peripheral_char.id.empty() |
397 ? ", " + from_peripheral_char.uuid.canonical_value() | 398 ? ", " + from_peripheral_char.uuid.canonical_value() |
398 : "") << " not found."; | 399 : "") << " not found."; |
399 | 400 |
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492 next_request.is_last_write_for_wire_message)); | 493 next_request.is_last_write_for_wire_message)); |
493 } | 494 } |
494 } | 495 } |
495 | 496 |
496 void BluetoothLowEnergyConnection::OnRemoteCharacteristicWritten( | 497 void BluetoothLowEnergyConnection::OnRemoteCharacteristicWritten( |
497 bool run_did_send_message_callback) { | 498 bool run_did_send_message_callback) { |
498 PA_LOG(INFO) << "Characteristic written."; | 499 PA_LOG(INFO) << "Characteristic written."; |
499 write_remote_characteristic_pending_ = false; | 500 write_remote_characteristic_pending_ = false; |
500 // TODO(sacomoto): Actually pass the current message to the observer. | 501 // TODO(sacomoto): Actually pass the current message to the observer. |
501 if (run_did_send_message_callback) | 502 if (run_did_send_message_callback) |
502 OnDidSendMessage(WireMessage(std::string(), std::string()), true); | 503 OnDidSendMessage(cryptauth::WireMessage(std::string(), std::string()), |
| 504 true); |
503 | 505 |
504 // Removes the top of queue (already processed) and process the next request. | 506 // Removes the top of queue (already processed) and process the next request. |
505 DCHECK(!write_requests_queue_.empty()); | 507 DCHECK(!write_requests_queue_.empty()); |
506 write_requests_queue_.pop(); | 508 write_requests_queue_.pop(); |
507 ProcessNextWriteRequest(); | 509 ProcessNextWriteRequest(); |
508 } | 510 } |
509 | 511 |
510 void BluetoothLowEnergyConnection::OnWriteRemoteCharacteristicError( | 512 void BluetoothLowEnergyConnection::OnWriteRemoteCharacteristicError( |
511 bool run_did_send_message_callback, | 513 bool run_did_send_message_callback, |
512 BluetoothRemoteGattService::GattErrorCode error) { | 514 BluetoothRemoteGattService::GattErrorCode error) { |
513 PA_LOG(WARNING) << "Error " << error << " writing characteristic: " | 515 PA_LOG(WARNING) << "Error " << error << " writing characteristic: " |
514 << to_peripheral_char_.uuid.canonical_value(); | 516 << to_peripheral_char_.uuid.canonical_value(); |
515 write_remote_characteristic_pending_ = false; | 517 write_remote_characteristic_pending_ = false; |
516 // TODO(sacomoto): Actually pass the current message to the observer. | 518 // TODO(sacomoto): Actually pass the current message to the observer. |
517 if (run_did_send_message_callback) | 519 if (run_did_send_message_callback) |
518 OnDidSendMessage(WireMessage(std::string(), std::string()), false); | 520 OnDidSendMessage(cryptauth::WireMessage(std::string(), std::string()), |
| 521 false); |
519 | 522 |
520 // Increases the number of failed attempts and retry. | 523 // Increases the number of failed attempts and retry. |
521 DCHECK(!write_requests_queue_.empty()); | 524 DCHECK(!write_requests_queue_.empty()); |
522 if (++write_requests_queue_.front().number_of_failed_attempts >= | 525 if (++write_requests_queue_.front().number_of_failed_attempts >= |
523 max_number_of_write_attempts_) { | 526 max_number_of_write_attempts_) { |
524 Disconnect(); | 527 Disconnect(); |
525 return; | 528 return; |
526 } | 529 } |
527 ProcessNextWriteRequest(); | 530 ProcessNextWriteRequest(); |
528 } | 531 } |
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609 const uint32_t value) { | 612 const uint32_t value) { |
610 std::vector<uint8_t> bytes(4, 0); | 613 std::vector<uint8_t> bytes(4, 0); |
611 bytes[0] = static_cast<uint8_t>(value); | 614 bytes[0] = static_cast<uint8_t>(value); |
612 bytes[1] = static_cast<uint8_t>(value >> 8); | 615 bytes[1] = static_cast<uint8_t>(value >> 8); |
613 bytes[2] = static_cast<uint8_t>(value >> 16); | 616 bytes[2] = static_cast<uint8_t>(value >> 16); |
614 bytes[3] = static_cast<uint8_t>(value >> 24); | 617 bytes[3] = static_cast<uint8_t>(value >> 24); |
615 return bytes; | 618 return bytes; |
616 } | 619 } |
617 | 620 |
618 } // namespace proximity_auth | 621 } // namespace proximity_auth |
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