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/*
* anytun
*
* The secure anycast tunneling protocol (satp) defines a protocol used
* for communication between any combination of unicast and anycast
* tunnel endpoints. It has less protocol overhead than IPSec in Tunnel
* mode and allows tunneling of every ETHER TYPE protocol (e.g.
* ethernet, ip, arp ...). satp directly includes cryptography and
* message authentication based on the methodes used by SRTP. It is
* intended to deliver a generic, scaleable and secure solution for
* tunneling and relaying of packets of any protocol.
*
*
* Copyright (C) 2007 anytun.org <satp@wirdorange.org>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2
* as published by the Free Software Foundation.
*
* 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 (see the file COPYING included with this
* distribution); if not, write to the Free Software Foundation, Inc.,
* 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include <stdexcept>
#include <poll.h>
extern "C" {
#include "openvpn/config.h"
#include "openvpn/syshead.h"
#include "openvpn/tun.h"
}
#include "tunDevice.h"
#include "threadUtils.hpp"
TunDevice::TunDevice(const char* dev_name,const char* dev_type, const char* ifcfg_lp, const char* ifcfg_rnmp)
{
dev_ = NULL;
// init_tun (const char *dev, /* --dev option */
// const char *dev_type, /* --dev-type option */
// const char *ifconfig_local_parm, /* --ifconfig parm 1 */
// const char *ifconfig_remote_netmask_parm, /* --ifconfig parm 2 */
// in_addr_t local_public,
// in_addr_t remote_public,
// const bool strict_warn,
// struct env_set *es)
// init_tun_post (struct tuntap *tt,
// const struct frame *frame,
// const struct tuntap_options *options)
// open_tun (const char *dev,
// const char *dev_type,
// const char *dev_node,
// bool ipv6,
// struct tuntap *tt)
// -------------------------------------------
// c->c1.tuntap = init_tun (c->options.dev,
// c->options.dev_type,
// c->options.ifconfig_local,
// c->options.ifconfig_remote_netmask,
// addr_host (&c->c1.link_socket_addr.local),
// addr_host (&c->c1.link_socket_addr.remote),
// !c->options.ifconfig_nowarn,
// c->c2.es);
// init_tun_post (c->c1.tuntap,
// &c->c2.frame,
// &c->options.tuntap_options);
// open_tun (c->options.dev,
// c->options.dev_type,
// c->options.dev_node,
// c->options.tun_ipv6,
// c->c1.tuntap);
in_addr_t lp, rp;
// lp = inet_addr("192.168.198.1");
// rp = inet_addr("192.168.199.1");
dev_ = init_tun(dev_name, dev_type, ifcfg_lp, ifcfg_rnmp, lp, rp, 0, NULL);
struct frame frame; // just for win32
struct tuntap_options options; // win32 & linux
options.txqueuelen = 100; // just for linux
init_tun_post(dev_, &frame, &options);
if(!dev_)
throw std::runtime_error("can't init tun/tap device");
open_tun (dev_name, NULL, NULL, true, dev_);
do_ifconfig(dev_, dev_->actual_name, 1400, NULL);
}
TunDevice::~TunDevice()
{
if(dev_)
close_tun(dev_);
}
short TunDevice::read(u_int8_t* buf, u_int32_t len)
{
if(!dev_)
return -1;
struct pollfd pfd[1];
pfd[0].fd = tun_event_handle(dev_);
pfd[0].events = POLLIN | POLLPRI;
pfd[0].revents = 0;
poll(pfd, 1, -1);
Lock lock(io_mutex_);
return read_tun(dev_, buf, len);
}
int TunDevice::write(u_int8_t* buf, u_int32_t len)
{
if(!dev_)
return -1;
Lock lock(io_mutex_);
return write_tun(dev_, buf, len);
}
char* TunDevice::getActualName()
{
if(!dev_)
return NULL;
return dev_->actual_name;
}
u_int32_t TunDevice::getType()
{
if(!dev_)
return TYPE_UNDEF;
switch(dev_->type)
{
case DEV_TYPE_TUN: return TYPE_TUN;
case DEV_TYPE_TAP: return TYPE_TAP;
}
return TYPE_UNDEF;
}
const char* TunDevice::getTypeString()
{
if(!dev_)
return NULL;
switch(dev_->type)
{
case DEV_TYPE_UNDEF: return "undef"; break;
case DEV_TYPE_TUN: return "tun"; break;
case DEV_TYPE_TAP: return "tap"; break;
}
return NULL;
}
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