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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) 2007-2009 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 as published by
* the Free Software Foundation, either version 3 of the License, or
* any later version.
*
* 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 <iostream>
#include <poll.h>
#include "datatypes.h"
#include "log.h"
#include "buffer.h"
#include "keyDerivation.h"
#include "keyDerivationFactory.h"
#include "options.h"
#include "connectionList.h"
#include "routingTable.h"
#include "networkAddress.h"
#include "packetSource.h"
#include "resolver.h"
#include "syncQueue.h"
#include "syncCommand.h"
void createConnection(const PacketSourceEndpoint & remote_end, ConnectionList & cl, u_int16_t seqSize, SyncQueue & queue, mux_t mux, Semaphore& sem)
{
SeqWindow * seq = new SeqWindow(seqSize);
seq_nr_t seq_nr_ = 0;
KeyDerivation * kd = KeyDerivationFactory::create(gOpt.getKdPrf());
kd->init(gOpt.getKey(), gOpt.getSalt(), gOpt.getPassphrase());
kd->setRole(gOpt.getRole());
cLog.msg(Log::PRIO_NOTICE) << "added connection remote host " << remote_end;
ConnectionParam connparam ((*kd), (*seq), seq_nr_, remote_end);
cl.addConnection(connparam, mux);
std::ostringstream sout;
boost::archive::text_oarchive oa(sout);
const SyncCommand scom(cl, mux);
oa << scom;
std::cout << std::setw(5) << std::setfill('0') << sout.str().size()<< ' ' << sout.str() << std::endl;
NetworkList routes = gOpt.getRoutes();
NetworkList::const_iterator rit;
for(rit = routes.begin(); rit != routes.end(); ++rit)
{
NetworkAddress addr(rit->net_addr.c_str());
NetworkPrefix prefix(addr, rit->prefix_length);
gRoutingTable.addRoute(prefix, mux);
std::ostringstream sout2;
boost::archive::text_oarchive oa2(sout2);
const SyncCommand scom2(prefix);
oa2 << scom2;
std::cout << std::setw(5) << std::setfill('0') << sout2.str().size()<< ' ' << sout2.str() << std::endl;
}
sem.up();
}
void createConnectionError(const std::exception& e, Semaphore& sem, int& ret)
{
cLog.msg(Log::PRIO_ERROR) << "uncaught runtime error: " << e.what();
ret = -1;
sem.up();
}
int main(int argc, char* argv[])
{
try
{
bool result = gOpt.parse(argc, argv);
if(!result) {
gOpt.printUsage();
exit(0);
}
StringList targets = gOpt.getLogTargets();
if(targets.empty()) {
cLog.addTarget("stderr:2");
}
else {
StringList::const_iterator it;
for(it = targets.begin();it != targets.end(); ++it)
cLog.addTarget(*it);
}
}
catch(syntax_error& e)
{
std::cerr << e << std::endl;
gOpt.printUsage();
exit(-1);
}
gOpt.parse_post(); // print warnings
gResolver.init();
ConnectionList cl;
SyncQueue queue;
Semaphore sem;
int ret = 0;
UDPPacketSource::proto::endpoint endpoint;
// allow emtpy endpoint!!!
gResolver.resolveUdp(gOpt.getRemoteAddr(), gOpt.getRemotePort(),
boost::bind(createConnection, _1, boost::ref(cl), gOpt.getSeqWindowSize(), boost::ref(queue), gOpt.getMux(), boost::ref(sem)),
boost::bind(createConnectionError, _1, boost::ref(sem), boost::ref(ret)),
gOpt.getResolvAddrType());
sem.down();
return ret;
}
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