mirror of
https://github.com/zerotier/ZeroTierOne.git
synced 2024-12-24 15:16:40 +00:00
228 lines
7.1 KiB
C++
228 lines
7.1 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/
|
|
*/
|
|
|
|
#ifndef ZT_NETCONETHERNETTAP_HPP
|
|
#define ZT_NETCONETHERNETTAP_HPP
|
|
|
|
#ifdef ZT_ENABLE_NETCON
|
|
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
|
|
#include <string>
|
|
#include <vector>
|
|
#include <stdexcept>
|
|
|
|
#include "../node/Constants.hpp"
|
|
#include "../node/MulticastGroup.hpp"
|
|
#include "../node/Mutex.hpp"
|
|
#include "../node/InetAddress.hpp"
|
|
#include "../osdep/Thread.hpp"
|
|
#include "../osdep/Phy.hpp"
|
|
|
|
#include "NetconService.hpp"
|
|
#include "NetconUtilities.hpp"
|
|
|
|
#include "netif/etharp.h"
|
|
|
|
namespace ZeroTier {
|
|
|
|
class NetconEthernetTap;
|
|
|
|
/**
|
|
* Network Containers instance -- emulates an Ethernet tap device as far as OneService knows
|
|
*/
|
|
class NetconEthernetTap
|
|
{
|
|
friend class Phy<NetconEthernetTap *>;
|
|
|
|
public:
|
|
NetconEthernetTap(
|
|
const char *homePath,
|
|
const MAC &mac,
|
|
unsigned int mtu,
|
|
unsigned int metric,
|
|
uint64_t nwid,
|
|
const char *friendlyName,
|
|
void (*handler)(void *,uint64_t,const MAC &,const MAC &,unsigned int,unsigned int,const void *,unsigned int),
|
|
void *arg);
|
|
|
|
~NetconEthernetTap();
|
|
|
|
void setEnabled(bool en);
|
|
bool enabled() const;
|
|
bool addIp(const InetAddress &ip);
|
|
bool removeIp(const InetAddress &ip);
|
|
std::vector<InetAddress> ips() const;
|
|
void put(const MAC &from,const MAC &to,unsigned int etherType,const void *data,unsigned int len);
|
|
std::string deviceName() const;
|
|
void setFriendlyName(const char *friendlyName);
|
|
void scanMulticastGroups(std::vector<MulticastGroup> &added,std::vector<MulticastGroup> &removed);
|
|
|
|
void threadMain()
|
|
throw();
|
|
|
|
LWIPStack *lwipstack;
|
|
uint64_t _nwid;
|
|
void (*_handler)(void *,uint64_t,const MAC &,const MAC &,unsigned int,unsigned int,const void *,unsigned int);
|
|
void *_arg;
|
|
|
|
private:
|
|
|
|
// LWIP callbacks
|
|
static err_t nc_poll(void* arg, struct tcp_pcb *tpcb);
|
|
static err_t nc_accept(void *arg, struct tcp_pcb *newpcb, err_t err);
|
|
static err_t nc_recved(void *arg, struct tcp_pcb *tpcb, struct pbuf *p, err_t err);
|
|
static void nc_err(void *arg, err_t err);
|
|
static void nc_close(struct tcp_pcb *tpcb);
|
|
static err_t nc_send(struct tcp_pcb *tpcb);
|
|
static err_t nc_sent(void *arg, struct tcp_pcb *tpcb, u16_t len);
|
|
static err_t nc_connected(void *arg, struct tcp_pcb *tpcb, err_t err);
|
|
|
|
// RPC handlers (from NetconIntercept)
|
|
void handle_bind(PhySocket *sock, void **uptr, struct bind_st *bind_rpc);
|
|
void handle_listen(PhySocket *sock, void **uptr, struct listen_st *listen_rpc);
|
|
void handle_retval(PhySocket *sock, void **uptr, unsigned char* buf);
|
|
void handle_socket(PhySocket *sock, void **uptr, struct socket_st* socket_rpc);
|
|
void handle_connect(PhySocket *sock, void **uptr, struct connect_st* connect_rpc);
|
|
void handle_write(TcpConnection *conn);
|
|
|
|
int send_return_value(TcpConnection *conn, int retval, int _errno);
|
|
int send_return_value(int fd, int retval, int _errno);
|
|
|
|
void phyOnDatagram(PhySocket *sock,void **uptr,const struct sockaddr *from,void *data,unsigned long len);
|
|
void phyOnTcpConnect(PhySocket *sock,void **uptr,bool success);
|
|
void phyOnTcpAccept(PhySocket *sockL,PhySocket *sockN,void **uptrL,void **uptrN,const struct sockaddr *from);
|
|
void phyOnTcpClose(PhySocket *sock,void **uptr);
|
|
void phyOnTcpData(PhySocket *sock,void **uptr,void *data,unsigned long len);
|
|
void phyOnTcpWritable(PhySocket *sock,void **uptr);
|
|
void phyOnUnixAccept(PhySocket *sockL,PhySocket *sockN,void **uptrL,void **uptrN);
|
|
void phyOnUnixClose(PhySocket *sock,void **uptr);
|
|
void phyOnUnixData(PhySocket *sock,void **uptr,void *data,unsigned long len);
|
|
void phyOnFileDescriptorActivity(PhySocket *sock,void **uptr,bool readable,bool writable);
|
|
|
|
|
|
ip_addr_t convert_ip(struct sockaddr_in * addr)
|
|
{
|
|
ip_addr_t conn_addr;
|
|
struct sockaddr_in *ipv4 = addr;
|
|
short a = ip4_addr1(&(ipv4->sin_addr));
|
|
short b = ip4_addr2(&(ipv4->sin_addr));
|
|
short c = ip4_addr3(&(ipv4->sin_addr));
|
|
short d = ip4_addr4(&(ipv4->sin_addr));
|
|
IP4_ADDR(&conn_addr, a,b,c,d);
|
|
return conn_addr;
|
|
}
|
|
|
|
// Client helpers
|
|
TcpConnection *getConnectionByTheirFD(PhySocket *sock, int fd);
|
|
TcpConnection *getConnectionByPCB(struct tcp_pcb *pcb);
|
|
void closeConnection(TcpConnection *conn);
|
|
void closeAll();
|
|
void closeClient(PhySocket *sock);
|
|
|
|
Phy<NetconEthernetTap *> _phy;
|
|
PhySocket *_unixListenSocket;
|
|
|
|
std::vector<TcpConnection*> tcp_connections;
|
|
std::vector<PhySocket*> rpc_sockets;
|
|
|
|
netif interface;
|
|
|
|
MAC _mac;
|
|
Thread _thread;
|
|
std::string _homePath;
|
|
std::string _dev; // path to Unix domain socket
|
|
|
|
std::vector<MulticastGroup> _multicastGroups;
|
|
Mutex _multicastGroups_m;
|
|
|
|
std::vector<InetAddress> _ips;
|
|
Mutex _ips_m;
|
|
|
|
unsigned int _mtu;
|
|
volatile bool _enabled;
|
|
volatile bool _run;
|
|
};
|
|
|
|
|
|
/*------------------------------------------------------------------------------
|
|
------------------------ low-level Interface functions -------------------------
|
|
------------------------------------------------------------------------------*/
|
|
|
|
static err_t low_level_output(struct netif *netif, struct pbuf *p);
|
|
|
|
static err_t tapif_init(struct netif *netif)
|
|
{
|
|
// Actual init functionality is in addIp() of tap
|
|
return ERR_OK;
|
|
}
|
|
|
|
static err_t low_level_output(struct netif *netif, struct pbuf *p)
|
|
{
|
|
struct pbuf *q;
|
|
char buf[ZT_MAX_MTU+32];
|
|
char *bufptr;
|
|
int tot_len = 0;
|
|
|
|
ZeroTier::NetconEthernetTap *tap = (ZeroTier::NetconEthernetTap*)netif->state;
|
|
|
|
/* initiate transfer(); */
|
|
bufptr = buf;
|
|
|
|
for(q = p; q != NULL; q = q->next) {
|
|
/* Send the data from the pbuf to the interface, one pbuf at a
|
|
time. The size of the data in each pbuf is kept in the ->len
|
|
variable. */
|
|
/* send data from(q->payload, q->len); */
|
|
memcpy(bufptr, q->payload, q->len);
|
|
bufptr += q->len;
|
|
tot_len += q->len;
|
|
}
|
|
|
|
// [Send packet to network]
|
|
// Split ethernet header and feed into handler
|
|
struct eth_hdr *ethhdr;
|
|
ethhdr = (struct eth_hdr *)buf;
|
|
|
|
ZeroTier::MAC src_mac;
|
|
ZeroTier::MAC dest_mac;
|
|
|
|
src_mac.setTo(ethhdr->src.addr, 6);
|
|
dest_mac.setTo(ethhdr->dest.addr, 6);
|
|
|
|
tap->_handler(tap->_arg,tap->_nwid,src_mac,dest_mac,
|
|
Utils::ntoh((uint16_t)ethhdr->type),0,buf + sizeof(struct eth_hdr),tot_len - sizeof(struct eth_hdr));
|
|
return ERR_OK;
|
|
}
|
|
|
|
} // namespace ZeroTier
|
|
|
|
#endif // ZT_ENABLE_NETCON
|
|
|
|
#endif
|