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// 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_HOST_REGISTER_SUPPORT_HOST_REQUEST_H_
#define REMOTING_HOST_REGISTER_SUPPORT_HOST_REQUEST_H_
#include <string>
#include "base/callback.h"
#include "base/macros.h"
#include "base/memory/ref_counted.h"
#include "base/memory/scoped_ptr.h"
#include "remoting/base/rsa_key_pair.h"
#include "remoting/signaling/signal_strategy.h"
#include "testing/gtest/include/gtest/gtest_prod.h"
namespace buzz {
class XmlElement;
} // namespace buzz
namespace base {
class TimeDelta;
} // namespace base
namespace remoting {
class IqRequest;
class IqSender;
// RegisterSupportHostRequest sends a request to register the host for
// a SupportID, as soon as the associated SignalStrategy becomes
// connected. When a response is received from the bot, it calls the
// callback specified in the Init() method.
class RegisterSupportHostRequest : public SignalStrategy::Listener {
public:
// First parameter is the new SessionID received from the bot. Second
// parameter is the amount of time until that id expires. Third parameter
// is an error message if the request failed, or null if it succeeded.
typedef base::Callback<void(const std::string&,
const base::TimeDelta&,
const std::string&)> RegisterCallback;
// |signal_strategy| and |key_pair| must outlive this
// object. |callback| is called when registration response is
// received from the server. Callback is never called if the bot
// malfunctions and doesn't respond to the request.
//
// TODO(sergeyu): This class should have timeout for the bot
// response.
RegisterSupportHostRequest(SignalStrategy* signal_strategy,
scoped_refptr<RsaKeyPair> key_pair,
const std::string& directory_bot_jid,
const RegisterCallback& callback);
~RegisterSupportHostRequest() override;
// HostStatusObserver implementation.
void OnSignalStrategyStateChange(SignalStrategy::State state) override;
bool OnSignalStrategyIncomingStanza(const buzz::XmlElement* stanza) override;
private:
void DoSend();
scoped_ptr<buzz::XmlElement> CreateRegistrationRequest(
const std::string& jid);
scoped_ptr<buzz::XmlElement> CreateSignature(const std::string& jid);
void ProcessResponse(IqRequest* request, const buzz::XmlElement* response);
void ParseResponse(const buzz::XmlElement* response,
std::string* support_id, base::TimeDelta* lifetime,
std::string* error_message);
void CallCallback(
const std::string& support_id, base::TimeDelta lifetime,
const std::string& error_message);
SignalStrategy* signal_strategy_;
scoped_refptr<RsaKeyPair> key_pair_;
std::string directory_bot_jid_;
RegisterCallback callback_;
scoped_ptr<IqSender> iq_sender_;
scoped_ptr<IqRequest> request_;
DISALLOW_COPY_AND_ASSIGN(RegisterSupportHostRequest);
};
} // namespace remoting
#endif // REMOTING_HOST_REGISTER_SUPPORT_HOST_REQUEST_H_
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