chrome/browser/signin/proximity_auth_facade.cc

   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
   3 // found in the LICENSE file.
   4
   5 #include "chrome/browser/signin/proximity_auth_facade.h"
   6
   7 #include "base/lazy_instance.h"
   8 #include "base/logging.h"
   9 #include "chrome/browser/profiles/profile.h"
  10 #include "chrome/browser/profiles/profile_window.h"
  11 #include "chrome/browser/signin/signin_manager_factory.h"
  12 #include "components/proximity_auth/proximity_auth_client.h"
  13 #include "components/proximity_auth/screenlock_bridge.h"
  14 #include "components/signin/core/browser/signin_manager_base.h"
  15
  16 namespace {
  17
  18 // A Chrome-specific implementation of the ProximityAuthClient.
  19 class ChromeProximityAuthClient : public proximity_auth::ProximityAuthClient {
  20  public:
  21   ChromeProximityAuthClient() {}
  22   ~ChromeProximityAuthClient() override {}
  23
  24   // proximity_auth::ProximityAuthClient implementation:
  25   std::string GetAuthenticatedUsername(
  26       content::BrowserContext* browser_context) const override;
  27   void Lock(content::BrowserContext* browser_context) override;
  28
  29  private:
  30   DISALLOW_COPY_AND_ASSIGN(ChromeProximityAuthClient);
  31 };
  32
  33 std::string ChromeProximityAuthClient::GetAuthenticatedUsername(
  34     content::BrowserContext* browser_context) const {
  35   Profile* profile = Profile::FromBrowserContext(browser_context);
  36   const SigninManagerBase* signin_manager =
  37       SigninManagerFactory::GetForProfileIfExists(profile);
  38   // |profile| has to be a signed-in profile with SigninManager already
  39   // created. Otherwise, just crash to collect stack.
  40   DCHECK(signin_manager);
  41   return signin_manager->GetAuthenticatedUsername();
  42 }
  43
  44 void ChromeProximityAuthClient::Lock(content::BrowserContext* browser_context) {
  45   profiles::LockProfile(Profile::FromBrowserContext(browser_context));
  46 }
  47
  48 // A facade class that is the glue required to initialize and manage the
  49 // lifecycle of various objects of the Proximity Auth component.
  50 class ProximityAuthFacade {
  51  public:
  52   proximity_auth::ScreenlockBridge* GetScreenlockBridge() {
  53     return &screenlock_bridge_;
  54   }
  55
  56  private:
  57   friend struct base::DefaultLazyInstanceTraits<ProximityAuthFacade>;
  58   friend struct base::DefaultDeleter<ProximityAuthFacade>;
  59
  60   ProximityAuthFacade() : screenlock_bridge_(&proximity_auth_client_) {}
  61   ~ProximityAuthFacade() {}
  62
  63   ChromeProximityAuthClient proximity_auth_client_;
  64   proximity_auth::ScreenlockBridge screenlock_bridge_;
  65
  66   DISALLOW_COPY_AND_ASSIGN(ProximityAuthFacade);
  67 };
  68
  69 base::LazyInstance<ProximityAuthFacade> g_proximity_auth_facade_instance =
  70     LAZY_INSTANCE_INITIALIZER;
  71
  72 }  // namespace
  73
  74 proximity_auth::ScreenlockBridge* GetScreenlockBridgeInstance() {
  75   return g_proximity_auth_facade_instance.Pointer()->GetScreenlockBridge();
  76 }