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-rw-r--r--src/resolver.cpp105
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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 "resolver.h"
+#include "log.h"
+
+template<class Proto> ResolveHandler<Proto>::ResolveHandler(const std::string& addr, const std::string& port) : addr_(addr), port_(port)
+{
+}
+
+template<class Proto> void ResolveHandler<Proto>::operator()(const boost::system::error_code& e, const boost::asio::ip::basic_resolver_iterator<Proto>)
+{
+ cLog.msg(Log::PRIO_DEBUG) << "ResolveHandler<" << typeid(Proto).name() << ">() called, addr='" << addr_ << "', port='" << port_ << "'";
+}
+
+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(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)
+{
+ cLog.msg(Log::PRIO_DEBUG) << "trying to resolv UDP: " << addr << " " << port;
+
+ boost::asio::ip::udp::resolver::query query(addr, port);
+ UdpResolveHandler handler(addr, port);
+ udp_resolver_.async_resolve(query, handler);
+}
+
+void Resolver::resolveTcp(const std::string& addr, const std::string& port)
+{
+ cLog.msg(Log::PRIO_DEBUG) << "trying to resolv TCP: " << addr << " " << port;
+
+ boost::asio::ip::tcp::resolver::query query(addr, port);
+ TcpResolveHandler handler(addr, port);
+ tcp_resolver_.async_resolve(query, handler);
+}