mirror of
https://github.com/zerotier/ZeroTierOne.git
synced 2025-01-14 00:39:59 +00:00
142 lines
3.6 KiB
C++
142 lines
3.6 KiB
C++
/*
|
|
* 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/
|
|
*/
|
|
|
|
#include <sys/poll.h>
|
|
#include <string>
|
|
|
|
#include "../osdep/Phy.hpp"
|
|
#include "NetconEthernetTap.hpp"
|
|
|
|
#include "Intercept.h"
|
|
#include "LWIPStack.hpp"
|
|
|
|
#ifndef _NETCON_SERVICE_HPP
|
|
#define _NETCON_SERVICE_HPP
|
|
|
|
using namespace std;
|
|
|
|
namespace ZeroTier {
|
|
|
|
enum NetconConnectionType { RPC, TCP_DATA };
|
|
|
|
class NetconEthernetTap;
|
|
|
|
/*
|
|
* A helper class for passing a reference to _phy to LWIP callbacks as a "state"
|
|
*/
|
|
class Larg
|
|
{
|
|
public:
|
|
NetconEthernetTap *tap;
|
|
PhySocket *sock;
|
|
Larg(NetconEthernetTap *_tap, PhySocket *_sock) : tap(_tap), sock(_sock) {}
|
|
};
|
|
|
|
// prototypes
|
|
class NetconClient;
|
|
class NetconConnection;
|
|
|
|
/*
|
|
* A data connection, any number of these may be associated with a NetconClient
|
|
*/
|
|
class NetconConnection
|
|
{
|
|
public:
|
|
int perceived_fd;
|
|
int their_fd;
|
|
unsigned char buf[DEFAULT_READ_BUFFER_SIZE];
|
|
int idx;
|
|
NetconConnectionType type;
|
|
struct tcp_pcb *pcb;
|
|
PhySocket *sock;
|
|
NetconClient *owner;
|
|
|
|
NetconConnection(NetconConnectionType type, PhySocket *sock) : type(type), sock(sock) {}
|
|
};
|
|
|
|
/*
|
|
* A "harnessed" client with associated rpc and data connections.
|
|
*/
|
|
class NetconClient
|
|
{
|
|
public:
|
|
vector<NetconConnection*> connections; // TODO: Switch to storing the actual object here
|
|
|
|
int tid;
|
|
bool waiting_for_retval;
|
|
NetconConnection *rpc;
|
|
NetconConnection* unmapped_conn;
|
|
|
|
NetconConnection *addConnection(NetconConnectionType type, PhySocket *sock)
|
|
{
|
|
NetconConnection *new_conn = new NetconConnection(type, sock);
|
|
new_conn->owner = this;
|
|
return new_conn;
|
|
}
|
|
|
|
// Check data and RPC connections
|
|
NetconConnection *getConnection(PhySocket *sock)
|
|
{
|
|
if(sock && sock == rpc->sock) {
|
|
return rpc;
|
|
}
|
|
for(size_t i=0; i<connections.size(); i++) {
|
|
if(sock == connections[i]->sock) return connections[i];
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
//
|
|
NetconConnection *getConnectionByTheirFD(int fd)
|
|
{
|
|
for(size_t i=0; i<connections.size(); i++) {
|
|
if(connections[i]->perceived_fd == fd) return connections[i];
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
//
|
|
NetconConnection *getConnectionByPCB(struct tcp_pcb *pcb)
|
|
{
|
|
for(size_t i=0; i<connections.size(); i++) {
|
|
if(connections[i]->pcb == pcb) return connections[i];
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
NetconConnection *containsPCB(struct tcp_pcb *pcb)
|
|
{
|
|
for(size_t i=0; i<connections.size(); i++) {
|
|
if(connections[i]->pcb == pcb) return connections[i];
|
|
}
|
|
return NULL;
|
|
}
|
|
};
|
|
} // namespace ZeroTier
|
|
|
|
#endif
|