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// Copyright 2014 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_TOKEN_VALIDATOR_H_
#define REMOTING_PROTOCOL_TOKEN_VALIDATOR_H_
#include <string>
#include "base/callback.h"
#include "base/memory/ref_counted.h"
#include "base/memory/scoped_ptr.h"
#include "url/gurl.h"
namespace remoting {
class RsaKeyPair;
namespace protocol {
// The |TokenValidator| encapsulates the parameters to be sent to the client
// to obtain a token, and the method to validate that token and obtain the
// shared secret for the connection.
class TokenValidator {
public:
// Callback passed to |ValidateThirdPartyToken|, and called once the host
// authentication finishes. |shared_secret| should be used by the host to
// create a V2Authenticator. In case of failure, the callback is called with
// an empty |shared_secret|.
typedef base::Callback<void(
const std::string& shared_secret)> TokenValidatedCallback;
virtual ~TokenValidator() {}
// Validates |token| with the server and exchanges it for a |shared_secret|.
// |token_validated_callback| is called when the host authentication ends,
// in the same thread |ValidateThirdPartyToken| was originally called.
// The request is canceled if this object is destroyed.
virtual void ValidateThirdPartyToken(
const std::string& token,
const TokenValidatedCallback& token_validated_callback) = 0;
// URL sent to the client, to be used by its |TokenFetcher| to get a token.
virtual const GURL& token_url() const = 0;
// Space-separated list of connection attributes the host must send to the
// client, and require the token received in response to match.
virtual const std::string& token_scope() const = 0;
};
// Factory for |TokenValidator|.
class TokenValidatorFactory
: public base::RefCountedThreadSafe<TokenValidatorFactory> {
public:
// Creates a TokenValidator. |local_jid| and |remote_jid| are used to create
// a token scope that is restricted to the current connection's JIDs.
virtual scoped_ptr<TokenValidator> CreateTokenValidator(
const std::string& local_jid,
const std::string& remote_jid) = 0;
protected:
friend class base::RefCountedThreadSafe<TokenValidatorFactory>;
virtual ~TokenValidatorFactory() {}
};
} // namespace protocol
} // namespace remoting
#endif // REMOTING_PROTOCOL_TOKEN_VALIDATOR_H_