anytun: signalController.h Source File

00001 /*
+00002  *  anytun
+00003  *
+00004  *  The secure anycast tunneling protocol (satp) defines a protocol used
+00005  *  for communication between any combination of unicast and anycast
+00006  *  tunnel endpoints.  It has less protocol overhead than IPSec in Tunnel
+00007  *  mode and allows tunneling of every ETHER TYPE protocol (e.g.
+00008  *  ethernet, ip, arp ...). satp directly includes cryptography and
+00009  *  message authentication based on the methodes used by SRTP.  It is
+00010  *  intended to deliver a generic, scaleable and secure solution for
+00011  *  tunneling and relaying of packets of any protocol.
+00012  *
+00013  *
+00014  *  Copyright (C) 2007 anytun.org <satp@wirdorange.org>
+00015  *
+00016  *  This program is free software; you can redistribute it and/or modify
+00017  *  it under the terms of the GNU General Public License version 2
+00018  *  as published by the Free Software Foundation.
+00019  *
+00020  *  This program is distributed in the hope that it will be useful,
+00021  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+00022  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+00023  *  GNU General Public License for more details.
+00024  *
+00025  *  You should have received a copy of the GNU General Public License
+00026  *  along with this program (see the file COPYING included with this
+00027  *  distribution); if not, write to the Free Software Foundation, Inc.,
+00028  *  59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+00029  */
+00030 
+00031 #ifndef _SIGNAL_CONTROLLER_H_
+00032 #define _SIGNAL_CONTROLLER_H_
+00033 
+00034 #include <csignal>
+00035 #include <map>
+00036 #include <queue>
+00037 
+00038 #include "threadUtils.hpp"
+00039 
+00040 class SignalHandler
+00041 {
+00042 public:
+00043   virtual ~SignalHandler() {}
+00044 
+00045   virtual int handle() { return 0; }
+00046 
+00047 protected:
+00048   SignalHandler(int s) : sigNum(s) {}
+00049 
+00050 private:
+00051   int sigNum;
+00052   friend class SignalController;
+00053 };
+00054 
+00055 class SigIntHandler : public SignalHandler
+00056 {
+00057 public:
+00058   SigIntHandler() : SignalHandler(SIGINT) {}
+00059   int handle();
+00060 };
+00061 
+00062 class SigQuitHandler : public SignalHandler
+00063 {
+00064 public:
+00065   SigQuitHandler() : SignalHandler(SIGQUIT) {}
+00066   int handle();
+00067 };
+00068 
+00069 class SigHupHandler : public SignalHandler
+00070 {
+00071 public:
+00072   SigHupHandler() : SignalHandler(SIGHUP) {}
+00073   int handle();
+00074 };
+00075 
+00076 class SigUsr1Handler : public SignalHandler
+00077 {
+00078 public:
+00079   SigUsr1Handler() : SignalHandler(SIGUSR1) {}
+00080   int handle();
+00081 };
+00082 
+00083 class SigUsr2Handler : public SignalHandler
+00084 {
+00085 public:
+00086   SigUsr2Handler() : SignalHandler(SIGUSR2) {}
+00087   int handle();
+00088 };
+00089 
+00090 class SigTermHandler : public SignalHandler
+00091 {
+00092 public:
+00093   SigTermHandler() : SignalHandler(SIGTERM) {}
+00094   int handle();
+00095 };
+00096 
+00097 class SignalController
+00098 {
+00099 public:
+00100   SignalController() {}
+00101   ~SignalController();
+00102   static void* handle(void* s);
+00103 
+00104   void init();
+00105   int run();
+00106 
+00107 private:
+00108   typedef std::map<int, SignalHandler*> HandlerMap;
+00109 
+00110   SignalController(const SignalController &s);
+00111   void operator=(const SignalController &s);
+00112   
+00113   std::queue<int> sigQueue;
+00114   Mutex sigQueueMutex;
+00115   Semaphore sigQueueSem;
+00116 
+00117   pthread_t thread;
+00118   HandlerMap handler;
+00119 };
+00120 
+00121 #endif
+