Introduce SessionManager that will contain code to start user session on Chrome OS

chrome/browser/chromeos/login/session/session_manager.h

+// 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.
+
+#ifndef CHROME_BROWSER_CHROMEOS_LOGIN_SESSION_SESSION_MANAGER_H_
+#define CHROME_BROWSER_CHROMEOS_LOGIN_SESSION_SESSION_MANAGER_H_
+
+#include <string>
+
+#include "base/basictypes.h"
+#include "base/memory/singleton.h"
+#include "base/memory/weak_ptr.h"
+#include "chrome/browser/chromeos/login/auth/authenticator.h"
+#include "chrome/browser/chromeos/login/auth/user_context.h"
+#include "chrome/browser/chromeos/login/signin/oauth2_login_manager.h"
+#include "net/base/network_change_notifier.h"
+
+class PrefRegistrySimple;
+class PrefService;
+class Profile;
+
+namespace chromeos {
+
+// SessionManager is responsible for starting user session which includes:
+// load and initialize Profile (including custom Profile preferences),
+// mark user as logged in and notify observers,
+// initialize OAuth2 authentication session,
+// initialize and launch user session based on the user type.
+class SessionManager :
+    public OAuth2LoginManager::Observer,
+    public net::NetworkChangeNotifier::ConnectionTypeObserver,
+    public base::SupportsWeakPtr<SessionManager> {
+ public:
+  class Delegate {
+   public:
+    // Called after profile is loaded and prepared for the session.
+    virtual void OnProfilePrepared(Profile* profile) = 0;
+
+#if defined(ENABLE_RLZ)
+    // Called after post-profile RLZ initialization.
+    virtual void OnRlzInitialized() {}
+#endif
+   protected:
+    virtual ~Delegate() {}
+  };
+
+  // Returns SessionManager instance.
+  static SessionManager* GetInstance();
+
+  // Registers session related preferences.
+  static void RegisterPrefs(PrefRegistrySimple* registry);
+
+  // OAuth2LoginManager::Observer overrides:
+  virtual void OnSessionRestoreStateChanged(
+      Profile* user_profile,
+      OAuth2LoginManager::SessionRestoreState state) OVERRIDE;
+  virtual void OnNewRefreshTokenAvaiable(Profile* user_profile) OVERRIDE;
+
+  // net::NetworkChangeNotifier::ConnectionTypeObserver overrides:
+  virtual void OnConnectionTypeChanged(
+      net::NetworkChangeNotifier::ConnectionType type) OVERRIDE;
+
+  // Start user session given |user_context| and |authenticator| which holds
+  // authentication context (profile).
+  void StartSession(const UserContext& user_context,
+                    scoped_refptr<Authenticator> authenticator,
+                    bool has_cookies,
+                    bool has_active_session,
+                    Delegate* delegate);
+
+  // Restores authentication session after crash.
+  void RestoreAuthenticationSession(Profile* profile);
+
+  // Initialize RLZ.
+  void InitRlz(Profile* profile);
+
+  // TODO(nkostylev): Drop these methods once LoginUtilsImpl::AttemptRestart()
+  // is migrated.
+  OAuth2LoginManager::SessionRestoreStrategy GetSigninSessionRestoreStrategy();
+  bool exit_after_session_restore() { return exit_after_session_restore_; }
+  void set_exit_after_session_restore(bool value) {
+    exit_after_session_restore_ = value;
+  }
+
+  // Invoked when the user is logging in for the first time, or is logging in as
+  // a guest user.
+  static void SetFirstLoginPrefs(PrefService* prefs);
+
+ private:
+  friend struct DefaultSingletonTraits<SessionManager>;
+
+  typedef std::set<std::string> SessionRestoreStateSet;
+
+  SessionManager();
+  virtual ~SessionManager();
+
+  void CreateUserSession(const UserContext& user_context,
+                         bool has_cookies);
+  void PreStartSession();
+  void StartCrosSession();
+  void NotifyUserLoggedIn();
+  void PrepareProfile();
+
+  // Callback for asynchronous profile creation.
+  void OnProfileCreated(const std::string& user_id,
+                        bool is_incognito_profile,
+                        Profile* profile,
+                        Profile::CreateStatus status);
+
+  // Callback for Profile::CREATE_STATUS_CREATED profile state.
+  // Initializes basic preferences for newly created profile. Any other
+  // early profile initialization that needs to happen before
+  // ProfileManager::DoFinalInit() gets called is done here.
+  void InitProfilePreferences(Profile* profile,
+                              const std::string& email);
+
+  // Callback for Profile::CREATE_STATUS_INITIALIZED profile state.
+  // Profile is created, extensions and promo resources are initialized.
+  void UserProfileInitialized(Profile* profile, bool is_incognito_profile);
+
+  // Callback to resume profile creation after transferring auth data from
+  // the authentication profile.
+  void CompleteProfileCreateAfterAuthTransfer(Profile* profile);
+
+  // Finalized profile preparation.
+  void FinalizePrepareProfile(Profile* profile);
+
+  // Initializes member variables needed for session restore process via
+  // OAuthLoginManager.
+  void InitSessionRestoreStrategy();
+
+  // Restores GAIA auth cookies for the created user profile from OAuth2 token.
+  void RestoreAuthSessionImpl(Profile* profile,
+                              bool restore_from_auth_cookies);
+
+  // Initializes RLZ. If |disabled| is true, RLZ pings are disabled.
+  void InitRlzImpl(Profile* profile, bool disabled);
+
+  Delegate* delegate_;
+
+  // Authentication/user context.
+  UserContext user_context_;
+  scoped_refptr<Authenticator> authenticator_;
+
+  // True if the authentication context cookie jar should contain
+  // authentication cookies from the authentication extension log in flow.
+  bool has_web_auth_cookies_;
+
+  // OAuth2 session related members.
+
+  // True if we should restart chrome right after session restore.
+  bool exit_after_session_restore_;
+
+  // Sesion restore strategy.
+  OAuth2LoginManager::SessionRestoreStrategy session_restore_strategy_;
+
+  // OAuth2 refresh token for session restore.
+  std::string oauth2_refresh_token_;
+
+  // Set of user_id for those users that we should restore authentication
+  // session when notified about online state change.
+  SessionRestoreStateSet pending_restore_sessions_;
+
+  DISALLOW_COPY_AND_ASSIGN(SessionManager);
+};
+
+}  // namespace chromeos
+
+#endif  // CHROME_BROWSER_CHROMEOS_LOGIN_SESSION_SESSION_MANAGER_H_