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// Copyright (c) 2012 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 GOOGLE_APIS_DRIVE_AUTH_SERVICE_H_
#define GOOGLE_APIS_DRIVE_AUTH_SERVICE_H_
#include <string>
#include <vector>
#include "base/memory/weak_ptr.h"
#include "base/observer_list.h"
#include "base/threading/thread_checker.h"
#include "google_apis/drive/auth_service_interface.h"
#include "google_apis/gaia/oauth2_token_service.h"
namespace net {
class URLRequestContextGetter;
}
namespace google_apis {
class AuthServiceObserver;
// This class provides authentication for Google services.
// It integrates specific service integration with OAuth2 stack
// (OAuth2TokenService) and provides OAuth2 token refresh infrastructure.
// All public functions must be called on UI thread.
class AuthService : public AuthServiceInterface,
public OAuth2TokenService::Observer {
public:
// |url_request_context_getter| is used to perform authentication with
// URLFetcher.
//
// |scopes| specifies OAuth2 scopes.
AuthService(OAuth2TokenService* oauth2_token_service,
const std::string& account_id,
net::URLRequestContextGetter* url_request_context_getter,
const std::vector<std::string>& scopes);
virtual ~AuthService();
// Overriden from AuthServiceInterface:
virtual void AddObserver(AuthServiceObserver* observer) OVERRIDE;
virtual void RemoveObserver(AuthServiceObserver* observer) OVERRIDE;
virtual void StartAuthentication(const AuthStatusCallback& callback) OVERRIDE;
virtual bool HasAccessToken() const OVERRIDE;
virtual bool HasRefreshToken() const OVERRIDE;
virtual const std::string& access_token() const OVERRIDE;
virtual void ClearAccessToken() OVERRIDE;
virtual void ClearRefreshToken() OVERRIDE;
// Overridden from OAuth2TokenService::Observer:
virtual void OnRefreshTokenAvailable(const std::string& account_id) OVERRIDE;
virtual void OnRefreshTokenRevoked(const std::string& account_id) OVERRIDE;
private:
// Called when the state of the refresh token changes.
void OnHandleRefreshToken(bool has_refresh_token);
// Called when authentication request from StartAuthentication() is
// completed.
void OnAuthCompleted(const AuthStatusCallback& callback,
GDataErrorCode error,
const std::string& access_token);
OAuth2TokenService* oauth2_token_service_;
std::string account_id_;
scoped_refptr<net::URLRequestContextGetter> url_request_context_getter_;
bool has_refresh_token_;
std::string access_token_;
std::vector<std::string> scopes_;
ObserverList<AuthServiceObserver> observers_;
base::ThreadChecker thread_checker_;
// Note: This should remain the last member so it'll be destroyed and
// invalidate its weak pointers before any other members are destroyed.
base::WeakPtrFactory<AuthService> weak_ptr_factory_;
DISALLOW_COPY_AND_ASSIGN(AuthService);
};
} // namespace google_apis
#endif // GOOGLE_APIS_DRIVE_AUTH_SERVICE_H_
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