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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.
//
// This class implements the OAuth2 client for the Chromoting host.
#ifndef REMOTING_HOST_OAUTH_CLIENT_H_
#define REMOTING_HOST_OAUTH_CLIENT_H_
#include <string>
#include "base/memory/scoped_ptr.h"
#include "remoting/host/gaia_oauth_client.h"
namespace base {
class MessageLoopProxy;
} // namespace base
namespace remoting {
class URLRequestContextGetter;
class OAuthClient : public GaiaOAuthClient::Delegate {
public:
class Delegate {
public:
virtual ~Delegate() { }
// Invoked on a successful response to the RefreshToken request.
virtual void OnRefreshTokenResponse(const std::string& access_token,
int expires_in_seconds) = 0;
// Invoked when there is an OAuth error with one of the requests.
virtual void OnOAuthError() = 0;
};
OAuthClient();
virtual ~OAuthClient();
// Notify the delegate on the speficied message loop when an access token is
// available. As long as the refresh is successful, another will be queued,
// timed just before the access token expires. As soon as an error occurs,
// this automatic refresh behaviour is cancelled.
//
// The delegate is accessed on the specified message loop, and must out-live
// it.
void Start(const scoped_refptr<URLRequestContextGetter>& url_context_,
const std::string& refresh_token,
Delegate* delegate,
base::MessageLoopProxy* message_loop);
// Overridden from GaiaOAuthClient::Delegate
virtual void OnGetTokensResponse(const std::string& refresh_token,
const std::string& access_token,
int expires_in_seconds) OVERRIDE;
virtual void OnRefreshTokenResponse(const std::string& access_token,
int expires) OVERRIDE;
virtual void OnOAuthError() OVERRIDE;
virtual void OnNetworkError(int response_code) OVERRIDE;
private:
void RefreshToken();
scoped_ptr<GaiaOAuthClient> gaia_oauth_client_;
std::string refresh_token_;
OAuthClient::Delegate* delegate_;
scoped_refptr<base::MessageLoopProxy> message_loop_;
DISALLOW_COPY_AND_ASSIGN(OAuthClient);
};
} // namespace remoting
#endif // REMOTING_HOST_OAUTH_CLIENT_H_
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