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// Copyright 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 COMPONENTS_AUTOFILL_CONTENT_BROWSER_WALLET_WALLET_SIGNIN_HELPER_H_
#define COMPONENTS_AUTOFILL_CONTENT_BROWSER_WALLET_WALLET_SIGNIN_HELPER_H_
#include <string>
#include "base/memory/scoped_ptr.h"
#include "base/memory/weak_ptr.h"
#include "net/url_request/url_fetcher_delegate.h"
namespace net {
class URLFetcher;
class URLRequestContextGetter;
class URLRequestStatus;
}
class GoogleServiceAuthError;
namespace autofill {
namespace wallet {
class WalletSigninHelperDelegate;
// Authenticates the user against the Online Wallet service.
// This class is not thread-safe. An instance may be used on any thread, but
// should not be accessed from multiple threads.
class WalletSigninHelper : public net::URLFetcherDelegate {
public:
// Constructs a helper that works with a given |delegate| and uses a given
// |getter| to obtain a context for URL. Both |delegate| and |getter| shall
// remain valid over the entire lifetime of the created instance.
WalletSigninHelper(WalletSigninHelperDelegate* delegate,
net::URLRequestContextGetter* getter);
virtual ~WalletSigninHelper();
// Initiates an attempt to passively sign the user into the Online Wallet.
// A passive sign-in is a non-interactive refresh of content area cookies,
// and it succeeds as long as the Online Wallet service could safely accept
// or refresh the existing area cookies, and the user doesn't need to be
// fully reauthenticated with the service.
// Either OnPassiveSigninSuccess or OnPassiveSigninFailure will be called
// on the original thread.
void StartPassiveSignin();
// Initiates a fetch of the user name of a signed-in user.
// Either OnUserNameFetchSuccess or OnUserNameFetchFailure will
// be called on the original thread.
void StartUserNameFetch();
// Initiates the fetch of the user's Google Wallet cookie.
void StartWalletCookieValueFetch();
protected:
// Sign-in helper states (for tests).
enum State {
IDLE,
PASSIVE_EXECUTING_SIGNIN,
PASSIVE_FETCHING_USERINFO,
USERNAME_FETCHING_USERINFO,
};
// (For tests) Current state of the sign-in helper.
State state() const { return state_; }
// (For tests) URL used to fetch the currently signed-in user info.
std::string GetGetAccountInfoUrlForTesting() const;
private:
// Called if a service authentication error occurs.
void OnServiceError(const GoogleServiceAuthError& error);
// Called if any other error occurs.
void OnOtherError();
// URLFetcherDelegate implementation.
virtual void OnURLFetchComplete(const net::URLFetcher* fetcher) OVERRIDE;
// Initiates fetching of the currently signed-in user information.
void StartFetchingUserNameFromSession();
// Processes the user information received from the server by url_fetcher_
// and calls the delegate callbacks on success/failure.
void ProcessGetAccountInfoResponseAndFinish();
// Attempts to parse a response from the Online Wallet sign-in.
// Returns true if the response is correct and the sign-in has succeeded.
// Otherwise, it calls OnServiceError() and returns false.
bool ParseSignInResponse();
// Attempts to parse the GetAccountInfo response from the server.
// Returns true on success; the obtained email address is stored into |email|.
bool ParseGetAccountInfoResponse(const net::URLFetcher* fetcher,
std::string* email);
// Callback for when the Google Wallet cookie has been retrieved.
void ReturnWalletCookieValue(const std::string& cookie_value);
// Should be valid throughout the lifetime of the instance.
WalletSigninHelperDelegate* const delegate_;
// URLRequestContextGetter to be used for URLFetchers.
net::URLRequestContextGetter* const getter_;
// While passive login/merge session URL fetches are going on:
scoped_ptr<net::URLFetcher> url_fetcher_;
// User account name (email) fetched from OnGetUserInfoSuccess().
std::string username_;
// Current internal state of the helper.
State state_;
base::WeakPtrFactory<WalletSigninHelper> weak_ptr_factory_;
DISALLOW_COPY_AND_ASSIGN(WalletSigninHelper);
};
} // namespace wallet
} // namespace autofill
#endif // COMPONENTS_AUTOFILL_CONTENT_BROWSER_WALLET_WALLET_SIGNIN_HELPER_H_
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