Bluetooth low energy connection.

components/proximity_auth/ble/proximity_auth_ble_system.cc

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "components/proximity_auth/ble/proximity_auth_ble_system.h"
 
 #include "base/bind.h"
 #include "base/logging.h"
+#include "components/proximity_auth/ble/bluetooth_low_energy_connection.h"
 #include "components/proximity_auth/ble/bluetooth_low_energy_connection_finder.h"
 #include "components/proximity_auth/connection.h"
+#include "components/proximity_auth/remote_device.h"
 #include "device/bluetooth/bluetooth_device.h"
 #include "device/bluetooth/bluetooth_gatt_connection.h"
 
 namespace proximity_auth {
 
 namespace {
 
 // The UUID of the Bluetooth Low Energy service.
 const char kSmartLockServiceUUID[] = "b3b7e28e-a000-3e17-bd86-6e97b9e28c11";
 
+// The UUID of the characteristic used to send data to the peripheral.
+const char kToPeripheralCharUUID[] = "977c6674-1239-4e72-993b-502369b8bb5a";
+
+// The UUID of the characteristic used to receive data from the peripheral.
+const char kFromPeripheralCharUUID[] = "f4b904a2-a030-43b3-98a8-221c536c03cb";
+
 }  // namespace
 
 ProximityAuthBleSystem::ProximityAuthBleSystem(
     ScreenlockBridge* screenlock_bridge,
     content::BrowserContext* browser_context)
     : screenlock_bridge_(screenlock_bridge),
       browser_context_(browser_context),
       weak_ptr_factory_(this) {
   DCHECK(screenlock_bridge_);
   DCHECK(browser_context_);
   VLOG(1) << "Starting Proximity Auth over Bluetooth Low Energy.";
   screenlock_bridge_->AddObserver(this);
 }
 
 ProximityAuthBleSystem::~ProximityAuthBleSystem() {
   VLOG(1) << "Stopping Proximity over Bluetooth Low Energy.";
   screenlock_bridge_->RemoveObserver(this);
 }
 
 void ProximityAuthBleSystem::OnScreenDidLock(
     ScreenlockBridge::LockHandler::ScreenType screen_type) {
   VLOG(1) << "OnScreenDidLock: " << screen_type;
   switch (screen_type) {
     case ScreenlockBridge::LockHandler::SIGNIN_SCREEN:
       connection_finder_.reset();
       break;
     case ScreenlockBridge::LockHandler::LOCK_SCREEN:
       DCHECK(!connection_finder_);
-      connection_finder_.reset(
-          new BluetoothLowEnergyConnectionFinder(kSmartLockServiceUUID));
+      connection_finder_.reset(new BluetoothLowEnergyConnectionFinder(
+          kSmartLockServiceUUID, kToPeripheralCharUUID,
+          kFromPeripheralCharUUID));
       connection_finder_->Find(
           base::Bind(&ProximityAuthBleSystem::OnConnectionFound,
                      weak_ptr_factory_.GetWeakPtr()));
       break;
     case ScreenlockBridge::LockHandler::OTHER_SCREEN:
       connection_finder_.reset();
       break;
   }
 };
 
 void ProximityAuthBleSystem::OnScreenDidUnlock(
     ScreenlockBridge::LockHandler::ScreenType screen_type) {
   VLOG(1) << "OnScreenDidUnlock: " << screen_type;
+  connection_->Disconnect();
+  connection_.reset();
   connection_finder_.reset();
 };
 
 void ProximityAuthBleSystem::OnFocusedUserChanged(const std::string& user_id) {
   VLOG(1) << "OnFocusedUserChanged: " << user_id;
 };
 
 void ProximityAuthBleSystem::OnConnectionFound(
-    scoped_ptr<device::BluetoothGattConnection> connection) {
+    scoped_ptr<Connection> connection) {
   VLOG(1) << "Connection found. Unlock.";
 
-  // Close the connection as it it no longer needed.
-  connection_finder_->CloseConnection(connection.Pass());
+  connection_ = connection.Pass();
 
   // Unlock the screen when a connection is found.
   //
   // Note that this magically unlocks Chrome (no user interaction is needed).
   // This user experience for this operation will be greately improved once
   // the Proximity Auth Unlock Manager migration to C++ is done.
   screenlock_bridge_->Unlock(browser_context_);
 }
 
 }  // namespace proximity_auth