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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_NEGOTIATING_CLIENT_AUTHENTICATOR_H_
#define REMOTING_PROTOCOL_NEGOTIATING_CLIENT_AUTHENTICATOR_H_
#include <string>
#include <vector>
#include "base/basictypes.h"
#include "base/memory/scoped_ptr.h"
#include "base/memory/weak_ptr.h"
#include "remoting/protocol/authentication_method.h"
#include "remoting/protocol/authenticator.h"
#include "remoting/protocol/negotiating_authenticator_base.h"
#include "remoting/protocol/third_party_client_authenticator.h"
namespace remoting {
namespace protocol {
typedef base::Callback<void(const std::string& secret)> SecretFetchedCallback;
typedef base::Callback<void(
const SecretFetchedCallback& secret_fetched_callback)> FetchSecretCallback;
// Client-side implementation of NegotiatingAuthenticatorBase.
// See comments in negotiating_authenticator_base.h for a general explanation.
class NegotiatingClientAuthenticator : public NegotiatingAuthenticatorBase {
public:
NegotiatingClientAuthenticator(
const std::string& authentication_tag,
const FetchSecretCallback& fetch_secret_callback,
scoped_ptr<ThirdPartyClientAuthenticator::TokenFetcher> token_fetcher_,
const std::vector<AuthenticationMethod>& methods);
virtual ~NegotiatingClientAuthenticator();
// Overriden from Authenticator.
virtual void ProcessMessage(const buzz::XmlElement* message,
const base::Closure& resume_callback) OVERRIDE;
virtual scoped_ptr<buzz::XmlElement> GetNextMessage() OVERRIDE;
private:
// (Asynchronously) creates an authenticator, and stores it in
// |current_authenticator_|. Authenticators that can be started in either
// state will be created in |preferred_initial_state|.
// |resume_callback| is called after |current_authenticator_| is set.
void CreateAuthenticator(Authenticator::State preferred_initial_state,
const base::Closure& resume_callback);
// Creates a V2Authenticator in state |initial_state| with the given
// |shared_secret|, then runs |resume_callback|.
void CreateV2AuthenticatorWithSecret(
Authenticator::State initial_state,
const base::Closure& resume_callback,
const std::string& shared_secret);
// Used for both authenticators.
std::string authentication_tag_;
// Used for shared secret authenticators.
FetchSecretCallback fetch_secret_callback_;
// Used for third party authenticators.
scoped_ptr<ThirdPartyClientAuthenticator::TokenFetcher> token_fetcher_;
// Internal NegotiatingClientAuthenticator data.
bool method_set_by_host_;
base::WeakPtrFactory<NegotiatingClientAuthenticator> weak_factory_;
DISALLOW_COPY_AND_ASSIGN(NegotiatingClientAuthenticator);
};
} // namespace protocol
} // namespace remoting
#endif // REMOTING_PROTOCOL_NEGOTIATING_CLIENT_AUTHENTICATOR_H_
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