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/*
* ZeroTier One - Network Virtualization Everywhere
* Copyright (C) 2011-2015 ZeroTier, Inc.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* --
*
* ZeroTier may be used and distributed under the terms of the GPLv3, which
* are available at: http://www.gnu.org/licenses/gpl-3.0.html
*
* If you would like to embed ZeroTier into a commercial application or
* redistribute it in a modified binary form, please contact ZeroTier Networks
* LLC. Start here: http://www.zerotier.com/
*/
#ifndef ZT_IPCCONNECTION_HPP
#define ZT_IPCCONNECTION_HPP
#include "../node/Constants.hpp"
#include "../node/Thread.hpp"
#include "../node/NonCopyable.hpp"
#include "../node/Mutex.hpp"
#ifdef __WINDOWS__
#include <WinSock2.h>
#include <Windows.h>
#endif
namespace ZeroTier {
class IpcListener;
/**
* Interprocess communication connection
*/
class IpcConnection : NonCopyable
{
friend class IpcListener;
public:
enum EventType
{
IPC_EVENT_COMMAND,
IPC_EVENT_NEW_CONNECTION,
IPC_EVENT_CONNECTION_CLOSED
};
/**
* Connect to an IPC endpoint
*
* @param endpoint Endpoint path
* @param timeout Inactivity timeout in seconds
* @param commandHandler Command handler function
* @param arg First argument to command handler
* @throws std::runtime_error Unable to connect
*/
IpcConnection(const char *endpoint,unsigned int timeout,void (*commandHandler)(void *,IpcConnection *,IpcConnection::EventType,const char *),void *arg);
~IpcConnection();
/**
* @param format Printf format string
* @param ... Printf arguments
*/
void printf(const char *format,...);
void threadMain()
throw();
private:
// Used by IpcListener to construct incoming connections
#ifdef __WINDOWS__
IpcConnection(HANDLE s,unsigned int timeout,void (*commandHandler)(void *,IpcConnection *,IpcConnection::EventType,const char *),void *arg);
#else
IpcConnection(int s,unsigned int timeout,void (*commandHandler)(void *,IpcConnection *,IpcConnection::EventType,const char *),void *arg);
#endif
void (*_handler)(void *,IpcConnection *,IpcConnection::EventType,const char *);
void *_arg;
unsigned int _timeout;
#ifdef __WINDOWS__
HANDLE _sock;
std::string _writeBuf;
bool _incoming;
#else
volatile int _sock;
#endif
Mutex _writeLock;
Thread _thread;
volatile bool _run;
volatile bool _running;
};
} // namespace ZeroTier
#endif
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