Implementing a BLE connection finder.

chrome/browser/signin/easy_unlock_service.cc

 // Copyright 2014 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 "chrome/browser/signin/easy_unlock_service.h"
 
 #include "apps/app_lifetime_monitor.h"
 #include "apps/app_lifetime_monitor_factory.h"
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/guid.h"
 #include "base/logging.h"
 #include "base/metrics/histogram_macros.h"
 #include "base/prefs/pref_registry_simple.h"
 #include "base/prefs/pref_service.h"
 #include "base/prefs/scoped_user_pref_update.h"
 #include "base/thread_task_runner_handle.h"
 #include "base/time/time.h"
 #include "base/values.h"
 #include "chrome/browser/browser_process.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/signin/easy_unlock_app_manager.h"
 #include "chrome/browser/signin/easy_unlock_service_factory.h"
 #include "chrome/browser/signin/easy_unlock_service_observer.h"
 #include "chrome/browser/signin/screenlock_bridge.h"
 #include "chrome/common/chrome_switches.h"
 #include "chrome/common/extensions/extension_constants.h"
 #include "chrome/common/pref_names.h"
 #include "components/pref_registry/pref_registry_syncable.h"
+#include "components/proximity_auth/ble/proximity_auth_ble_system.h"
 #include "components/proximity_auth/switches.h"
 #include "components/user_manager/user.h"
 #include "device/bluetooth/bluetooth_adapter.h"
 #include "device/bluetooth/bluetooth_adapter_factory.h"
 
 #if defined(OS_CHROMEOS)
 #include "chrome/browser/chromeos/login/easy_unlock/easy_unlock_key_manager.h"
 #include "chrome/browser/chromeos/login/easy_unlock/easy_unlock_tpm_key_manager.h"
 #include "chrome/browser/chromeos/login/easy_unlock/easy_unlock_tpm_key_manager_factory.h"
 #include "chrome/browser/chromeos/login/session/user_session_manager.h"
@@ skipping 599 matching lines @@
   app_manager_->ReloadApp();
   NotifyUserUpdated();
 }
 
 void EasyUnlockService::UpdateAppState() {
   if (IsAllowed()) {
     EnsureTpmKeyPresentIfNeeded();
     app_manager_->LoadApp();
     NotifyUserUpdated();
 
+    if (base::CommandLine::ForCurrentProcess()->HasSwitch(
+            proximity_auth::switches::kEnableBluetoothLowEnergyDiscovery) &&
+        !proximity_auth_ble_system_) {
+      proximity_auth_ble_system_.reset(
+          new proximity_auth::ProximityAuthBleSystem());
+    }
+
 #if defined(OS_CHROMEOS)
     if (!power_monitor_)
       power_monitor_.reset(new PowerMonitor(this));
 #endif
   } else {
     bool bluetooth_waking_up = false;
 #if defined(OS_CHROMEOS)
     // If the service is not allowed due to bluetooth not being detected just
     // after system suspend is done, give bluetooth more time to be detected
     // before disabling the app (and resetting screenlock state).
     bluetooth_waking_up =
         power_monitor_.get() && power_monitor_->waking_up() &&
         !bluetooth_detector_->IsPresent();
 #endif
 
     if (!bluetooth_waking_up) {
       app_manager_->DisableAppIfLoaded();
       ResetScreenlockState();
+      proximity_auth_ble_system_.reset();
 #if defined(OS_CHROMEOS)
       power_monitor_.reset();
 #endif
     }
   }
 }
 
 void EasyUnlockService::DisableAppWithoutResettingScreenlockState() {
   app_manager_->DisableAppIfLoaded();
 }
@@ skipping 180 matching lines @@
 
   // TODO(tbarzic): Set check_private_key only if previous sign-in attempt
   // failed.
   EasyUnlockTpmKeyManagerFactory::GetInstance()->Get(profile_)
       ->PrepareTpmKey(true /* check_private_key */,
                       base::Closure());
 #endif  // defined(OS_CHROMEOS)
 
   tpm_key_checked_ = true;
 }