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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 <csignal>
#include <map>
#include <iostream>
//#include "threadUtils.hpp"
#include "signalController.h"
#include "log.h"
int SigIntHandler::handle()
{
cLog.msg(Log::PRIO_NOTICE) << "SIG-Int caught, exiting";
return 1;
}
int SigQuitHandler::handle()
{
cLog.msg(Log::PRIO_NOTICE) << "SIG-Quit caught, exiting";
return 1;
}
int SigHupHandler::handle()
{
cLog.msg(Log::PRIO_NOTICE) << "SIG-Hup caught";
return 0;
}
int SigTermHandler::handle()
{
cLog.msg(Log::PRIO_NOTICE) << "SIG-Term caughtm, exiting";
return 1;
}
int SigUsr1Handler::handle()
{
cLog.msg(Log::PRIO_NOTICE) << "SIG-Usr1 caught";
return 0;
}
int SigUsr2Handler::handle()
{
cLog.msg(Log::PRIO_NOTICE) << "SIG-Usr2 caught";
return 0;
}
SignalController::~SignalController()
{
for(HandlerMap::iterator it = handler.begin(); it != handler.end(); ++it)
delete it->second;
}
void* SignalController::handle(void *s)
{
SignalController* self = reinterpret_cast<SignalController*>(s);
sigset_t signal_set;
int sigNum;
while(1)
{
sigfillset(&signal_set);
sigwait(&signal_set, &sigNum);
{
Lock(self->sigQueueMutex);
self->sigQueue.push(sigNum);
}
self->sigQueueSem.up();
}
pthread_exit(NULL);
}
void SignalController::init()
{
sigset_t signal_set;
sigfillset(&signal_set);
sigdelset(&signal_set, SIGCHLD);
sigdelset(&signal_set, SIGSEGV);
sigdelset(&signal_set, SIGBUS);
sigdelset(&signal_set, SIGFPE);
pthread_sigmask(SIG_BLOCK, &signal_set, NULL);
pthread_create(&thread, NULL, handle, this);
pthread_detach(thread);
handler[SIGINT] = new SigIntHandler;
handler[SIGQUIT] = new SigQuitHandler;
handler[SIGHUP] = new SigHupHandler;
handler[SIGTERM] = new SigTermHandler;
handler[SIGUSR1] = new SigUsr1Handler;
handler[SIGUSR2] = new SigUsr2Handler;
}
int SignalController::run()
{
while(1)
{
sigQueueSem.down();
int sigNum;
{
Lock lock(sigQueueMutex);
sigNum = sigQueue.front();
sigQueue.pop();
}
HandlerMap::iterator it = handler.find(sigNum);
if(it != handler.end())
{
int ret = it->second->handle();
if(ret)
return ret;
}
else
cLog.msg(Log::PRIO_NOTICE) << "SIG " << sigNum << " caught - ignoring";
}
return 0;
}
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