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// Copyright 2016 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_SECURITY_KEY_GNUBBY_AUTH_HANDLER_LINUX_H_
#define REMOTING_HOST_SECURITY_KEY_GNUBBY_AUTH_HANDLER_LINUX_H_
#include <stddef.h>
#include <map>
#include <string>
#include "base/macros.h"
#include "base/memory/scoped_ptr.h"
#include "base/threading/thread_checker.h"
#include "net/base/completion_callback.h"
#include "net/socket/stream_socket.h"
#include "remoting/host/security_key/gnubby_auth_handler.h"
namespace net {
class UnixDomainServerSocket;
} // namespace net
namespace remoting {
class GnubbySocket;
class GnubbyAuthHandlerLinux : public GnubbyAuthHandler {
public:
GnubbyAuthHandlerLinux();
~GnubbyAuthHandlerLinux() override;
size_t GetActiveSocketsMapSizeForTest() const;
void SetRequestTimeoutForTest(const base::TimeDelta& timeout);
private:
typedef std::map<int, GnubbySocket*> ActiveSockets;
// GnubbyAuthHandler interface.
void CreateGnubbyConnection() override;
bool IsValidConnectionId(int gnubby_connection_id) const override;
void SendClientResponse(int gnubby_connection_id,
const std::string& response) override;
void SendErrorAndCloseConnection(int gnubby_connection_id) override;
void SetSendMessageCallback(const SendMessageCallback& callback) override;
// Starts listening for connection.
void DoAccept();
// Called when a connection is accepted.
void OnAccepted(int result);
// Called when a GnubbySocket has done reading.
void OnReadComplete(int gnubby_connection_id);
// Gets an active socket iterator for |gnubby_connection_id|.
ActiveSockets::const_iterator GetSocketForConnectionId(
int gnubby_connection_id) const;
// Send an error and closes an active socket.
void SendErrorAndCloseActiveSocket(const ActiveSockets::const_iterator& iter);
// A request timed out.
void RequestTimedOut(int gnubby_connection_id);
// Ensures GnubbyAuthHandlerLinux methods are called on the same thread.
base::ThreadChecker thread_checker_;
// Socket used to listen for authorization requests.
scoped_ptr<net::UnixDomainServerSocket> auth_socket_;
// A temporary holder for an accepted connection.
scoped_ptr<net::StreamSocket> accept_socket_;
// Used to pass gnubby extension messages to the client.
SendMessageCallback send_message_callback_;
// The last assigned gnubby connection id.
int last_connection_id_;
// Sockets by connection id used to process gnubbyd requests.
ActiveSockets active_sockets_;
// Timeout used for a request.
base::TimeDelta request_timeout_;
DISALLOW_COPY_AND_ASSIGN(GnubbyAuthHandlerLinux);
};
} // namespace remoting
#endif // REMOTING_HOST_SECURITY_KEY_GNUBBY_AUTH_HANDLER_LINUX_H_
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