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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_HOST_AUTHENTICATOR_H_
#define REMOTING_PROTOCOL_THIRD_PARTY_HOST_AUTHENTICATOR_H_
#include <string>
#include "base/callback.h"
#include "base/memory/scoped_ptr.h"
#include "remoting/protocol/third_party_authenticator_base.h"
namespace remoting {
class RsaKeyPair;
namespace protocol {
class TokenValidator;
// Implements the host side of the third party authentication mechanism.
// The host authenticator sends the |token_url| and |scope| obtained from the
// |TokenValidator| to the client, and expects a |token| in response.
// Once that token is received, it calls |TokenValidator| asynchronously to
// validate it, and exchange it for a |shared_secret|. Once the |TokenValidator|
// returns, the host uses the |shared_secret| to create an underlying
// |V2Authenticator|, which is used to establish the encrypted connection.
class ThirdPartyHostAuthenticator : public ThirdPartyAuthenticatorBase {
public:
// Creates a third-party host authenticator. |local_cert| and |key_pair| are
// used by the underlying V2Authenticator to create the SSL channels.
// |token_validator| contains the token parameters to be sent to the client
// and is used to obtain the shared secret.
ThirdPartyHostAuthenticator(const std::string& local_cert,
scoped_refptr<RsaKeyPair> key_pair,
scoped_ptr<TokenValidator> token_validator);
~ThirdPartyHostAuthenticator() override;
protected:
// ThirdPartyAuthenticator implementation.
void ProcessTokenMessage(const buzz::XmlElement* message,
const base::Closure& resume_callback) override;
void AddTokenElements(buzz::XmlElement* message) override;
private:
void OnThirdPartyTokenValidated(const buzz::XmlElement* message,
const base::Closure& resume_callback,
const std::string& shared_secret);
std::string local_cert_;
scoped_refptr<RsaKeyPair> key_pair_;
scoped_ptr<TokenValidator> token_validator_;
DISALLOW_COPY_AND_ASSIGN(ThirdPartyHostAuthenticator);
};
} // namespace protocol
} // namespace remoting
#endif // REMOTING_PROTOCOL_THIRD_PARTY_HOST_AUTHENTICATOR_H_
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