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// 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.
#include <map>
#include <memory>
#include <string>
#include <vector>
#include "base/memory/scoped_refptr.h"
#include "base/observer_list.h"
#include "google_apis/gaia/gaia_oauth_client.h"
#include "services/identity/public/cpp/access_token_fetcher.h"
#include "services/identity/public/cpp/identity_manager.h"
class GoogleServiceAuthError;
namespace network {
class SharedURLLoaderFactory;
namespace gcm {
struct AccountIds {
std::string account_key; // The account ID used by OAuth2TokenService.
std::string gaia;
std::string email;
class AccountIdFetcher;
// The AccountTracker keeps track of what accounts exist on the
// profile and the state of their credentials. The tracker fetches the
// gaia ID of each account it knows about.
// The AccountTracker maintains these invariants:
// 1. Events are only fired after the gaia ID has been fetched.
// 2. Add/Remove and SignIn/SignOut pairs are always generated in order.
// 3. SignIn follows Add, and there will be a SignOut between SignIn & Remove.
// 4. If there is no primary account, there are no other accounts.
class AccountTracker : public identity::IdentityManager::Observer {
identity::IdentityManager* identity_manager,
scoped_refptr<network::SharedURLLoaderFactory> url_loader_factory);
~AccountTracker() override;
class Observer {
virtual void OnAccountSignInChanged(const AccountIds& ids,
bool is_signed_in) = 0;
void Shutdown();
void AddObserver(Observer* observer);
void RemoveObserver(Observer* observer);
// Returns the list of accounts that are signed in, and for which gaia IDs
// have been fetched. The primary account for the profile will be first
// in the vector. Additional accounts will be in order of their gaia IDs.
std::vector<AccountIds> GetAccounts() const;
// Indicates if all user information has been fetched. If the result is false,
// there are still unfinished fetchers.
virtual bool IsAllUserInfoFetched() const;
friend class AccountIdFetcher;
struct AccountState {
AccountIds ids;
bool is_signed_in;
// identity::IdentityManager::Observer implementation.
void OnPrimaryAccountSet(const AccountInfo& primary_account_info) override;
void OnPrimaryAccountCleared(
const AccountInfo& previous_primary_account_info) override;
void OnRefreshTokenUpdatedForAccount(
const AccountInfo& account_info) override;
void OnRefreshTokenRemovedForAccount(const std::string& account_id) override;
void OnUserInfoFetchSuccess(AccountIdFetcher* fetcher,
const std::string& gaia_id);
void OnUserInfoFetchFailure(AccountIdFetcher* fetcher);
void NotifySignInChanged(const AccountState& account);
void UpdateSignInState(const std::string& account_key, bool is_signed_in);
void StartTrackingAccount(const std::string& account_key);
// Note: |account_key| is passed by value here, because the original
// object may be stored in |accounts_| and if so, it will be destroyed
// after erasing the key from the map.
void StopTrackingAccount(const std::string account_key);
void StopTrackingAllAccounts();
void StartFetchingUserInfo(const std::string& account_key);
void DeleteFetcher(AccountIdFetcher* fetcher);
identity::IdentityManager* identity_manager_;
scoped_refptr<network::SharedURLLoaderFactory> url_loader_factory_;
std::map<std::string, std::unique_ptr<AccountIdFetcher>> user_info_requests_;
std::map<std::string, AccountState> accounts_;
base::ObserverList<Observer>::Unchecked observer_list_;
bool shutdown_called_;
class AccountIdFetcher : public gaia::GaiaOAuthClient::Delegate {
identity::IdentityManager* identity_manager,
scoped_refptr<network::SharedURLLoaderFactory> url_loader_factory,
AccountTracker* tracker,
const std::string& account_key);
~AccountIdFetcher() override;
const std::string& account_key() { return account_key_; }
void Start();
void AccessTokenFetched(GoogleServiceAuthError error,
identity::AccessTokenInfo access_token_info);
// gaia::GaiaOAuthClient::Delegate implementation.
void OnGetUserIdResponse(const std::string& gaia_id) override;
void OnOAuthError() override;
void OnNetworkError(int response_code) override;
identity::IdentityManager* identity_manager_;
scoped_refptr<network::SharedURLLoaderFactory> url_loader_factory_;
AccountTracker* tracker_;
const std::string account_key_;
std::unique_ptr<identity::AccessTokenFetcher> access_token_fetcher_;
std::unique_ptr<gaia::GaiaOAuthClient> gaia_oauth_client_;
} // namespace gcm