log.h

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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 _LOG_H_
00032 #define _LOG_H_
00033 
00034 #include <string>
00035 #include <sstream>
00036 #include <syslog.h>
00037 
00038 #include "threadUtils.hpp"
00039 
00040 class Log;
00041 
00042 class LogStringBuilder 
00043 {
00044 public:
00045   LogStringBuilder(LogStringBuilder const& src);
00046   LogStringBuilder(Log& l, int p);
00047   ~LogStringBuilder();
00048 
00049   template<class T>
00050   std::ostream& operator<<(T const& value) { return stream << value; }
00051 
00052 private:
00053   Log& log;
00054   int prio;
00055   std::stringstream stream;
00056 };
00057 
00058 class Log : public std::ostringstream
00059 {
00060 public:
00061   static const int FAC_USER = LOG_USER;
00062   static const int FAC_MAIL = LOG_MAIL;
00063   static const int FAC_DAEMON = LOG_DAEMON;
00064   static const int FAC_AUTH = LOG_AUTH;
00065   static const int FAC_SYSLOG = LOG_SYSLOG;
00066   static const int FAC_LPR = LOG_LPR;
00067   static const int FAC_NEWS = LOG_NEWS;
00068   static const int FAC_UUCP = LOG_UUCP;
00069   static const int FAC_CRON = LOG_CRON;
00070   static const int FAC_AUTHPRIV = LOG_AUTHPRIV;
00071   static const int FAC_FTP = LOG_FTP;
00072   static const int FAC_LOCAL0 = LOG_LOCAL0;
00073   static const int FAC_LOCAL1 = LOG_LOCAL1;
00074   static const int FAC_LOCAL2 = LOG_LOCAL2;
00075   static const int FAC_LOCAL3 = LOG_LOCAL3;
00076   static const int FAC_LOCAL4 = LOG_LOCAL4;
00077   static const int FAC_LOCAL5 = LOG_LOCAL5;
00078   static const int FAC_LOCAL6 = LOG_LOCAL6;
00079   static const int FAC_LOCAL7 = LOG_LOCAL7;
00080 
00081   static const int PRIO_EMERG = LOG_EMERG;
00082   static const int PRIO_ALERT = LOG_ALERT;
00083   static const int PRIO_CRIT = LOG_CRIT;
00084   static const int PRIO_ERR = LOG_ERR;
00085   static const int PRIO_WARNING = LOG_WARNING;
00086   static const int PRIO_NOTICE = LOG_NOTICE;
00087   static const int PRIO_INFO = LOG_INFO;
00088   static const int PRIO_DEBUG = LOG_DEBUG;
00089 
00090   static Log& instance();
00091 
00092   Log& setLogName(std::string newLogName); 
00093   std::string getLogName() const { return logName; }
00094   Log& setFacility(int newFacility);
00095   int getFacility() const { return facility; }
00096 
00097   LogStringBuilder msg(int prio=PRIO_INFO) { return LogStringBuilder(*this, prio); }
00098 
00099 private:
00100   Log();
00101   ~Log();
00102   Log(const Log &l);
00103   void operator=(const Log &l);
00104 
00105   static Log* inst;
00106   static Mutex instMutex;
00107   class instanceCleaner {
00108     public: ~instanceCleaner() {
00109       if(Log::inst != 0)
00110         delete Log::inst;
00111     }
00112   };
00113   friend class instanceCleaner;
00114 
00115   void open();
00116 
00117   Mutex mutex;
00118   friend class LogStringBuilder;
00119 
00120   std::string logName;
00121   int facility;
00122 };
00123 
00124 extern Log& cLog;
00125 
00126 #endif

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