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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) 2007-2008 Othmar Gsenger, Erwin Nindl,
* Christian Pointner <satp@wirdorange.org>
*
* This file is part of Anytun.
*
* Anytun is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 3 as
* published by the Free Software Foundation.
*
* Anytun 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 anytun. If not, see <http://www.gnu.org/licenses/>.
*/
#include <boost/bind.hpp>
#include <boost/system/error_code.hpp>
#include "resolver.h"
#include "log.h"
template<class Proto> ResolveHandler<Proto>::ResolveHandler(const std::string& addr, const std::string& port, boost::function<void(boost::asio::ip::basic_endpoint<Proto>)> const& onResolve) : addr_(addr), port_(port), callback_(onResolve)
{
}
template<class Proto> void ResolveHandler<Proto>::operator()(const boost::system::error_code& e, const boost::asio::ip::basic_resolver_iterator<Proto> endpointIt)
{
cLog.msg(Log::PRIO_DEBUG) << "ResolveHandler<" << typeid(Proto).name() << ">() called, addr='" << addr_ << "', port='" << port_ << "'";
if(boost::system::posix_error::success == e) {
callback_(*endpointIt);
} else {
cLog.msg(Log::PRIO_ERROR) << "ResolveHandler<" << typeid(Proto).name() << ">(): " << e;
}
}
Resolver* Resolver::inst = NULL;
Mutex Resolver::instMutex;
Resolver& gResolver = Resolver::instance();
Resolver& Resolver::instance()
{
Lock lock(instMutex);
static instanceCleaner c;
if(!inst)
inst = new Resolver();
return *inst;
}
Resolver::Resolver() : udp_resolver_(io_service_), tcp_resolver_(io_service_), thread_(NULL)
{
}
Resolver::~Resolver()
{
if(thread_)
delete thread_;
}
void Resolver::init()
{
if(!thread_)
thread_ = new boost::thread(boost::bind(&Resolver::run, this));
}
void Resolver::run(/*void* s*/)
{
//Resolver* self = reinterpret_cast<Resolver*>(s);
cLog.msg(Log::PRIO_DEBUG) << "Resolver Thread started";
while(1) {
/*self->*/io_service_.run();
/*self->*/io_service_.reset();
boost::this_thread::sleep(boost::posix_time::milliseconds(250));
}
}
void Resolver::resolveUdp(const std::string& addr, const std::string& port, boost::function<void (boost::asio::ip::udp::endpoint)> const& onResolve)
{
cLog.msg(Log::PRIO_DEBUG) << "trying to resolv UDP: " << addr << " " << port;
boost::asio::ip::udp::resolver::query query(addr, port);
UdpResolveHandler handler(addr, port, onResolve);
udp_resolver_.async_resolve(query, handler);
}
void Resolver::resolveTcp(const std::string& addr, const std::string& port, boost::function<void (boost::asio::ip::tcp::endpoint)> const& onResolve)
{
cLog.msg(Log::PRIO_DEBUG) << "trying to resolv TCP: " << addr << " " << port;
boost::asio::ip::tcp::resolver::query query(addr, port);
TcpResolveHandler handler(addr, port, onResolve);
tcp_resolver_.async_resolve(query, handler);
}
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