Retrieve the authenticated user's e-mail from GAIA during SAML login

chrome/browser/ui/webui/chromeos/login/authenticated_user_email_retriever.h

+// Copyright (c) 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_UI_WEBUI_CHROMEOS_LOGIN_AUTHENTICATED_USER_EMAIL_RETRIEVER_H_
+#define CHROME_BROWSER_UI_WEBUI_CHROMEOS_LOGIN_AUTHENTICATED_USER_EMAIL_RETRIEVER_H_
+
+#include <string>
+
+#include "base/basictypes.h"
+#include "base/callback_forward.h"
+#include "base/compiler_specific.h"
+#include "base/memory/ref_counted.h"
+#include "base/memory/weak_ptr.h"
+#include "google_apis/gaia/gaia_auth_consumer.h"
+#include "net/cookies/canonical_cookie.h"
+#include "net/cookies/cookie_store.h"
+#include "net/url_request/url_request_context_getter.h"
+
+class GaiaAuthFetcher;
+
+namespace chromeos {
+
+// Helper class that retrieves the authenticated user's e-mail address.
+class AuthenticatedUserEmailRetriever : public GaiaAuthConsumer {
+ public:
+  typedef base::Callback<void(const std::string&)>
+      AuthenticatedUserEmailCallback;
+
+  // Extracts the GAIA cookies from |url_request_context_getter|, retrieves the
+  // authenticated user's e-mail address from GAIA and passes it to |callback|.
+  // If the e-mail address cannot be retrieved, an empty string is passed to
+  // the |callback|.
+  AuthenticatedUserEmailRetriever(
+      const AuthenticatedUserEmailCallback& callback,
+      scoped_refptr<net::URLRequestContextGetter> url_request_context_getter);
+  virtual ~AuthenticatedUserEmailRetriever();
+
+  // GaiaAuthConsumer:
+  virtual void OnGetUserInfoSuccess(const UserInfoMap& data) OVERRIDE;
+  virtual void OnGetUserInfoFailure(
+      const GoogleServiceAuthError& error) OVERRIDE;
+
+ private:
+  void ExtractCookies(scoped_refptr<net::CookieStore> cookie_store);
+  void ExtractLSIDFromCookies(const net::CookieList& cookies);
+
+  AuthenticatedUserEmailCallback callback_;
+
+  scoped_refptr<net::URLRequestContextGetter> url_request_context_getter_;
+  scoped_ptr<GaiaAuthFetcher> gaia_auth_fetcher_;
+
+  base::WeakPtrFactory<AuthenticatedUserEmailRetriever> weak_factory_;
+
+  DISALLOW_COPY_AND_ASSIGN(AuthenticatedUserEmailRetriever);
+};
+
+}  // namespace chromeos
+
+#endif  // CHROME_BROWSER_UI_WEBUI_CHROMEOS_LOGIN_AUTHENTICATED_USER_EMAIL_RETRIEVER_H_