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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 REMOTING_PROTOCOL_THIRD_PARTY_CLIENT_AUTHENTICATOR_H_
#define REMOTING_PROTOCOL_THIRD_PARTY_CLIENT_AUTHENTICATOR_H_
#include <string>
#include "base/callback.h"
#include "base/macros.h"
#include "base/memory/scoped_ptr.h"
#include "base/memory/weak_ptr.h"
#include "remoting/protocol/client_authentication_config.h"
#include "remoting/protocol/third_party_authenticator_base.h"
namespace remoting {
namespace protocol {
// Implements the client side of the third party authentication mechanism.
// The client authenticator expects a |token_url| and |scope| in the first
// message from the host, then calls the |TokenFetcher| asynchronously to
// request a |token| and |shared_secret| from that url. If the server requires
// interactive authentication, the |TokenFetcher| implementation will show the
// appropriate UI. Once the |TokenFetcher| returns, the client sends the |token|
// to the host, and uses the |shared_secret| to create an underlying
// |V2Authenticator|, which is used to establish the encrypted connection.
class ThirdPartyClientAuthenticator : public ThirdPartyAuthenticatorBase {
public:
// Creates a third-party client authenticator.
// |create_base_authenticator_callback| is used to create the base
// authenticator. |token_fetcher| is used to get the authentication token.
ThirdPartyClientAuthenticator(
const CreateBaseAuthenticatorCallback& create_base_authenticator_callback,
const FetchThirdPartyTokenCallback& fetch_token_callback);
~ThirdPartyClientAuthenticator() override;
protected:
// ThirdPartyAuthenticator implementation.
void ProcessTokenMessage(const buzz::XmlElement* message,
const base::Closure& resume_callback) override;
void AddTokenElements(buzz::XmlElement* message) override;
private:
void OnThirdPartyTokenFetched(const base::Closure& resume_callback,
const std::string& third_party_token,
const std::string& shared_secret);
CreateBaseAuthenticatorCallback create_base_authenticator_callback_;
FetchThirdPartyTokenCallback fetch_token_callback_;
std::string token_;
base::WeakPtrFactory<ThirdPartyClientAuthenticator> weak_factory_;
DISALLOW_COPY_AND_ASSIGN(ThirdPartyClientAuthenticator);
};
} // namespace protocol
} // namespace remoting
#endif // REMOTING_PROTOCOL_THIRD_PARTY_CLIENT_AUTHENTICATOR_H_
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