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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 <iostream>
#include <fstream>
#include <poll.h>
#include <fcntl.h>
#include <pwd.h>
#include <grp.h>
#include <string>
#include "datatypes.h"
#include "log.h"
#include "signalController.h"
#include "options.h"
#include "syncServer.h"
#include "daemon.hpp"
void syncOnConnect(SyncTcpConnection * connptr)
{
std::ifstream file( gOpt.getFileName().c_str() );
if( file.is_open() )
{
std::string line;
while (! file.eof() )
{
getline (file,line);
connptr->Send(line);
}
file.close();
}
}
void syncListener()
{
boost::asio::io_service io_service;
try
{
SyncTcpConnection::proto::resolver resolver(io_service);
SyncTcpConnection::proto::endpoint e;
if(gOpt.getBindToAddr()!="")
{
SyncTcpConnection::proto::resolver::query query(gOpt.getBindToAddr(), gOpt.getBindToPort());
e = *resolver.resolve(query);
} else {
SyncTcpConnection::proto::resolver::query query(gOpt.getBindToPort());
e = *resolver.resolve(query);
}
SyncServer server(io_service,e);
server.onConnect=boost::bind(syncOnConnect,_1);
io_service.run();
}
catch (std::exception& e)
{
std::string addr = gOpt.getBindToAddr() == "" ? "*" : gOpt.getBindToAddr();
cLog.msg(Log::PRIO_ERR) << "cannot bind to " << addr << ":" << gOpt.getBindToPort()
<< " (" << e.what() << ") exiting.." << std::endl;
//return false;
}
//return true;
}
int main(int argc, char* argv[])
{
bool daemonized=false;
try
{
cLog.addTarget("syslog:7,anytun-controld,daemon");
cLog.msg(Log::PRIO_NOTICE) << "anytun-controld started...";
try
{
bool result = gOpt.parse(argc, argv);
if(!result) {
cLog.msg(Log::PRIO_NOTICE) << "printing help text and exitting";
gOpt.printUsage();
exit(0);
}
}
catch(syntax_error& e)
{
std::cerr << e << std::endl;
cLog.msg(Log::PRIO_NOTICE) << "exitting after syntax error";
gOpt.printUsage();
exit(-1);
}
std::ifstream file( gOpt.getFileName().c_str() );
if( file.is_open() )
file.close();
else {
std::cout << "ERROR: unable to open file!" << std::endl;
exit(-1);
}
PrivInfo privs(gOpt.getUsername(), gOpt.getGroupname());
std::ofstream pidFile;
if(gOpt.getPidFile() != "") {
pidFile.open(gOpt.getPidFile().c_str());
if(!pidFile.is_open()) {
std::cout << "can't open pid file" << std::endl;
}
}
if(gOpt.getChrootDir() != "")
do_chroot(gOpt.getChrootDir());
privs.drop();
if(gOpt.getDaemonize()) {
daemonize();
daemonized = true;
}
if(pidFile.is_open()) {
pid_t pid = getpid();
pidFile << pid;
pidFile.close();
}
gSignalController.init();
boost::thread * syncListenerThread;
syncListenerThread = new boost::thread(boost::bind(syncListener));
int ret = gSignalController.run();
return ret;
}
catch(std::runtime_error& e)
{
if(daemonized)
cLog.msg(Log::PRIO_ERR) << "uncaught runtime error, exiting: " << e.what();
else
std::cout << "uncaught runtime error, exiting: " << e.what() << std::endl;
}
catch(std::exception& e)
{
if(daemonized)
cLog.msg(Log::PRIO_ERR) << "uncaught exception, exiting: " << e.what();
else
std::cout << "uncaught exception, exiting: " << e.what() << std::endl;
}
}
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