PairingAuthenticator implementation and plumbing.

remoting/protocol/authenticator.h

 // 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.
 
 #ifndef REMOTING_PROTOCOL_AUTHENTICATOR_H_
 #define REMOTING_PROTOCOL_AUTHENTICATOR_H_
 
 #include <string>
 
 #include "base/callback.h"
 #include "base/memory/scoped_ptr.h"
 
 namespace buzz {
 class XmlElement;
 }  // namespace buzz
 
 namespace remoting {
 namespace protocol {
 
 class ChannelAuthenticator;
 
+typedef base::Callback<void(const std::string& secret)> SecretFetchedCallback;
+typedef base::Callback<void(
+    const SecretFetchedCallback& secret_fetched_callback)> FetchSecretCallback;
+
 // Authenticator is an abstract interface for authentication protocol
 // implementations. Different implementations of this interface may be
 // used on each side of the connection depending of type of the auth
 // protocol. Client and host will repeatedly call their Authenticators
 // and deliver the messages they generate, until successful
 // authentication is reported.
 //
 // Authenticator may exchange multiple messages before session is
 // authenticated. Each message sent/received by an Authenticator is
 // delivered either in a session description inside session-initiate
@@ skipping 90 matching lines @@
   virtual scoped_ptr<Authenticator> CreateAuthenticator(
       const std::string& local_jid,
       const std::string& remote_jid,
       const buzz::XmlElement* first_message) = 0;
 };
 
 }  // namespace protocol
 }  // namespace remoting
 
 #endif  // REMOTING_PROTOCOL_AUTHENTICATOR_H_