OAuth2 sign-in flow for ChromeOS

chrome/browser/chromeos/login/oauth_login_manager.h

+// Copyright (c) 2013 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_OAUTH_LOGIN_MANAGER_H_
+#define CHROME_BROWSER_CHROMEOS_LOGIN_OAUTH_LOGIN_MANAGER_H_
+
+#include <string>
+
+#include "base/memory/scoped_ptr.h"
+#include "chrome/browser/chromeos/login/oauth2_login_verifier.h"
+#include "chrome/browser/chromeos/login/oauth2_token_fetcher.h"
+#include "content/public/browser/notification_observer.h"
+#include "content/public/browser/notification_registrar.h"
+
+class GaiaAuthFetcher;
+class GoogleServiceAuthError;
+class Profile;
+class TokenService;
+
+namespace chromeos {
+
+// Observes token change events in TokenService and coordinates appropriate
+// response from ChromeOS login flow.
+class OAuthLoginManager : public content::NotificationObserver,
+                          public OAuth2LoginVerifier::Delegate,
+                          public OAuth2TokenFetcher::Delegate {
+ public:
+  class Delegate {
+   public:
+    virtual ~Delegate() {}
+    // Raised when cookie jar authentication is successfully completed.
+    virtual void OnCompletedAuthentication(Profile* user_profile) = 0;
+  };
+
+  OAuthLoginManager(Delegate* delegate,
+                    Profile* user_profile,
+                    Profile* auth_profile,
+                    bool has_web_auth_cookies);
+
+  // Restores and verified OAuth tokens either from TokenService or
+  void RestoreOAuth2Tokens();
+
+ private:
+  // content::NotificationObserver overrides.
+  void Observe(int type,
+               const content::NotificationSource& source,
+               const content::NotificationDetails& details) OVERRIDE;
+
+  // OAuth2LoginVerifier::Delegate overrides.
+  virtual void OnOAuth2LoginVerifierSuccess(const std::string& sid,
+                                            const std::string& lsid,
+                                            const std::string& auth) OVERRIDE;
+  virtual void OnOAuth2LoginVerifierFaulure() OVERRIDE;
+
+  // OAuth2TokenFetcher::Delegate overrides.
+  virtual void OnOAuth2TokenAvailable(
+      const GaiaAuthConsumer::ClientLoginResult& gaia_credentials,
+      const GaiaAuthConsumer::ClientOAuthResult& oauth2_tokens) OVERRIDE;
+  virtual void OnOAuth2TokenFetchFailed() OVERRIDE;
+
+
+  // Retrieves TokenService for |user_profile_| and sets up notification
+  // observer events.
+  TokenService* SetupTokenService();
+  // Loads previously stored OAuth2 tokens and kicks off its validation.
+  void LoadAndVerifyOAuth2Tokens();
+  // Attempts to fetch OAuth2 tokens by using pre-authenticated cookie jar from
+  // provided |auth_profile|.
+  void FetchOAuth2Tokens();
+  // Reports when all tokens are loaded.
+  void ReportTokenLoaded();
+  // Issue GAIA cookie recovery (MergeSession) from |uber_token_|.
+  void RestoreSessionCookies();
+  // Checks GAIA error and figures out whether the request should be
+  // re-attempted.
+  bool RetryOnError(const GoogleServiceAuthError& error);
+
+  Delegate* delegate_;
+  Profile* user_profile_;
+  Profile* auth_profile_;
+  bool has_web_auth_cookies_;
+  // Keeps the track if we have already reported OAuth2 token being loaded
+  // by TokenService.
+  bool loading_reported_;
+  int restore_attempt_count_;
+  content::NotificationRegistrar registrar_;
+  scoped_ptr<OAuth2TokenFetcher> oauth2_token_fetcher_;
+  scoped_ptr<OAuth2LoginVerifier> login_verifier_;
+  std::string refresh_token_;
+};
+
+}  // namespace chromeos
+
+#endif  // CHROME_BROWSER_CHROMEOS_LOGIN_OAUTH_LOGIN_MANAGER_H_