4 * The secure anycast tunneling protocol (satp) defines a protocol used
5 * for communication between any combination of unicast and anycast
6 * tunnel endpoints. It has less protocol overhead than IPSec in Tunnel
7 * mode and allows tunneling of every ETHER TYPE protocol (e.g.
8 * ethernet, ip, arp ...). satp directly includes cryptography and
9 * message authentication based on the methods used by SRTP. It is
10 * intended to deliver a generic, scaleable and secure solution for
11 * tunneling and relaying of packets of any protocol.
14 * Copyright (C) 2007-2014 Markus Grüneis, Othmar Gsenger, Erwin Nindl,
15 * Christian Pointner <satp@wirdorange.org>
17 * This file is part of Anytun.
19 * Anytun is free software: you can redistribute it and/or modify
20 * it under the terms of the GNU General Public License as published by
21 * the Free Software Foundation, either version 3 of the License, or
24 * Anytun is distributed in the hope that it will be useful,
25 * but WITHOUT ANY WARRANTY; without even the implied warranty of
26 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
27 * GNU General Public License for more details.
29 * You should have received a copy of the GNU General Public License
30 * along with Anytun. If not, see <http://www.gnu.org/licenses/>.
32 * In addition, as a special exception, the copyright holders give
33 * permission to link the code of portions of this program with the
34 * OpenSSL library under certain conditions as described in each
35 * individual source file, and distribute linked combinations
37 * You must obey the GNU General Public License in all respects
38 * for all of the code used other than OpenSSL. If you modify
39 * file(s) with this exception, you may extend this exception to your
40 * version of the file(s), but you are not obligated to do so. If you
41 * do not wish to do so, delete this exception statement from your
42 * version. If you delete this exception statement from all source
43 * files in the program, then also delete it here.
46 #ifndef ANYTUN_signalHandler_hpp_INCLUDED
47 #define ANYTUN_signalHandler_hpp_INCLUDED
50 #include <boost/thread.hpp>
51 #include <boost/bind.hpp>
53 int SigIntHandler(int /*sig*/, const std::string& /*msg*/)
55 cLog.msg(Log::PRIO_NOTICE) << "SIG-Int caught, exiting";
59 int SigQuitHandler(int /*sig*/, const std::string& /*msg*/)
61 cLog.msg(Log::PRIO_NOTICE) << "SIG-Quit caught, exiting";
65 int SigHupHandler(int /*sig*/, const std::string& /*msg*/)
67 cLog.msg(Log::PRIO_NOTICE) << "SIG-Hup caught";
71 int SigTermHandler(int /*sig*/, const std::string& /*msg*/)
73 cLog.msg(Log::PRIO_NOTICE) << "SIG-Term caught, exiting";
77 int SigUsr1Handler(int /*sig*/, const std::string& /*msg*/)
79 cLog.msg(Log::PRIO_NOTICE) << "SIG-Usr1 caught";
83 int SigUsr2Handler(int /*sig*/, const std::string& /*msg*/)
85 cLog.msg(Log::PRIO_NOTICE) << "SIG-Usr2 caught";
89 /// TODO: this outstandignly ugly please and i really can't stress the please fix it asap!!!!!!!
90 extern std::ofstream pidFile;
94 if(pidFile.is_open()) {
100 struct timespec timeout;
104 sigemptyset(&signal_set);
105 sigaddset(&signal_set, SIGINT);
106 sigaddset(&signal_set, SIGQUIT);
107 sigaddset(&signal_set, SIGHUP);
108 sigaddset(&signal_set, SIGTERM);
109 sigaddset(&signal_set, SIGUSR1);
110 sigaddset(&signal_set, SIGUSR2);
113 sigNum = sigtimedwait(&signal_set, NULL, &timeout);
115 if(errno != EINTR && errno != EAGAIN) {
116 cLog.msg(Log::PRIO_ERROR) << "sigwait failed with error: \"" << AnytunErrno(errno) << "\" SignalHandling will be disabled";
120 gSignalController.inject(sigNum);
125 void registerSignalHandler(SignalController& ctrl, DaemonService& /*service*/)
129 sigemptyset(&signal_set);
130 sigaddset(&signal_set, SIGINT);
131 sigaddset(&signal_set, SIGQUIT);
132 sigaddset(&signal_set, SIGHUP);
133 sigaddset(&signal_set, SIGTERM);
134 sigaddset(&signal_set, SIGUSR1);
135 sigaddset(&signal_set, SIGUSR2);
137 #if defined(BOOST_HAS_PTHREADS)
138 pthread_sigmask(SIG_BLOCK, &signal_set, NULL);
140 #error The signalhandler works only with pthreads
143 boost::thread(boost::bind(handleSignal));
145 ctrl.handler[SIGINT] = boost::bind(SigIntHandler, _1, _2);
146 ctrl.handler[SIGQUIT] = boost::bind(SigQuitHandler, _1, _2);
147 ctrl.handler[SIGHUP] = boost::bind(SigHupHandler, _1, _2);
148 ctrl.handler[SIGTERM] = boost::bind(SigTermHandler, _1, _2);
149 ctrl.handler[SIGUSR1] = boost::bind(SigUsr1Handler, _1, _2);
150 ctrl.handler[SIGUSR2] = boost::bind(SigUsr2Handler, _1, _2);
152 cLog.msg(Log::PRIO_DEBUG) << "signal handlers are now registered";