added extended logging capability

1 files changed, 433 insertions, 0 deletions

diff --git a/src/logTargets.cpp b/src/logTargets.cpp
new file mode 100644
index 0000000..82bb6fd
--- /dev/null
+++ b/src/logTargets.cpp
@@ -0,0 +1,433 @@
+/*
+ *  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 <sstream>
+
+#include "datatypes.h"
+
+#include "logTargets.h"
+#include "log.h"
+
+#include "options.h"
+
+#ifdef LOG_WINEVENTLOG
+#include <windows.h>
+#include <strsafe.h>
+#endif
+
+LogTarget::LogTarget() : opened(false), enabled(false), max_prio(Log::PRIO_NOTICE)
+{
+}
+
+LogTarget::LogTarget(int prio) : opened(false), enabled(false), max_prio(prio)
+{
+}
+
+LogTargetList::~LogTargetList()
+{
+  clear();
+}
+
+LogTargetList::target_type_t LogTargetList::targetTypeFromString(std::string type)
+{
+  if(type == "syslog") return TARGET_SYSLOG;
+  if(type == "file") return TARGET_FILE;
+  if(type == "stdout") return TARGET_STDOUT;
+  if(type == "stderr") return TARGET_STDERR;
+  if(type == "eventlog") return TARGET_WINEVENTLOG;
+  return TARGET_UNKNOWN;
+}
+
+std::string LogTargetList::targetTypeToString(target_type_t type)
+{
+  switch(type) {
+  case TARGET_SYSLOG: return "syslog";
+  case TARGET_FILE: return "file";
+  case TARGET_STDOUT: return "stdout";
+  case TARGET_STDERR: return "stderr";
+  case TARGET_WINEVENTLOG: return "eventlog";
+  default: return "unknown";
+  }
+}
+
+LogTarget* LogTargetList::add(std::string conf)
+{
+  std::stringstream s(conf);
+  std::string type;
+  getline(s, type, ':');
+  if(!s.good())
+    throw syntax_error(conf, 0);
+
+  int prio = 0;
+  s >> prio;
+  if(s.fail())
+    throw syntax_error(conf, conf.find_first_of(':')+1);
+
+  char buff[100];
+  if(s.good()) {
+    s.ignore(1);
+    s.get(buff, 100);
+  }
+  else
+    buff[0] = 0;
+
+  return add(targetTypeFromString(type), prio, buff);
+}
+
+LogTarget* LogTargetList::add(target_type_t type, int prio, std::string conf)
+{
+  switch(type) {
+  case TARGET_SYSLOG: {
+    #ifdef LOG_SYSLOG
+    if(!LogTargetSyslog::duplicateAllowed() && targets.count(TARGET_SYSLOG))
+      throw std::runtime_error(targetTypeToString(TARGET_SYSLOG) + " logtarget is supported only once");
+
+    return targets.insert(TargetsMap::value_type(TARGET_SYSLOG, new LogTargetSyslog(prio, conf)))->second;
+    #else
+    throw std::runtime_error(targetTypeToString(TARGET_SYSLOG) + " logtarget is not supported");
+    #endif
+  }
+  case TARGET_FILE: {
+    #ifdef LOG_FILE
+    if(!LogTargetFile::duplicateAllowed() && targets.count(TARGET_FILE))
+      throw std::runtime_error(targetTypeToString(TARGET_FILE) + " logtarget is supported only once");
+
+    return targets.insert(TargetsMap::value_type(TARGET_FILE, new LogTargetFile(prio, conf)))->second;
+    #else
+    throw std::runtime_error(targetTypeToString(TARGET_FILE) + " logtarget is not supported");
+    #endif
+  }
+  case TARGET_STDOUT: 
+  case TARGET_STDERR: {
+    #ifdef LOG_STDOUT
+    if(!LogTargetStdout::duplicateAllowed() && targets.count(type))
+      throw std::runtime_error(targetTypeToString(type) + " logtarget is supported only once");
+
+    if(type == TARGET_STDERR)
+      return targets.insert(TargetsMap::value_type(type, new LogTargetStdout(prio, std::cerr)))->second;
+    else
+      return targets.insert(TargetsMap::value_type(type, new LogTargetStdout(prio, std::cout)))->second;
+    #else
+    throw std::runtime_error(targetTypeToString(type) + " logtarget is not supported");
+    #endif
+  }
+  case TARGET_WINEVENTLOG: {
+    #ifdef LOG_WINEVENTLOG
+    if(!LogTargetSyslog::duplicateAllowed() && targets.count(TARGET_WINEVENTLOG))
+      throw std::runtime_error(targetTypeToString(TARGET_WINEVENTLOG) + " logtarget is supported only once");
+
+    return targets.insert(TargetsMap::value_type(TARGET_WINEVENTLOG, new LogTargetWinEventlog(prio, conf)))->second;
+    #else
+    throw std::runtime_error(targetTypeToString(TARGET_WINEVENTLOG) + " logtarget is not supported");
+    #endif
+  }
+  default: 
+    throw std::runtime_error("unknown log target");
+  }
+}
+
+void LogTargetList::clear()
+{
+  TargetsMap::iterator it;
+  for(it = targets.begin(); it != targets.end(); ++it)
+    delete it->second;
+  targets.clear();
+}
+  
+void LogTargetList::log(std::string msg, int prio)
+{
+  TargetsMap::const_iterator it;
+  for(it = targets.begin(); it != targets.end(); ++it) {
+    if(it->second->isEnabled() && it->second->getMaxPrio() >= prio)
+      it->second->log(msg, prio);
+  }
+}
+
+
+#ifdef LOG_SYSLOG
+int LogTargetSyslog::facilityFromString(std::string fac)
+{
+  if(fac == "user") return FAC_USER;
+  if(fac == "mail") return FAC_MAIL;
+  if(fac == "daemon") return FAC_DAEMON;
+  if(fac == "auth") return FAC_AUTH;
+  if(fac == "syslog") return FAC_SYSLOG;
+  if(fac == "lpr") return FAC_LPR;
+  if(fac == "news") return FAC_NEWS;
+  if(fac == "uucp") return FAC_UUCP;
+  if(fac == "cron") return FAC_CRON;
+  if(fac == "authpriv") return FAC_AUTHPRIV;
+  if(fac == "ftp") return FAC_FTP;
+  if(fac == "local0") return FAC_LOCAL0;
+  if(fac == "local1") return FAC_LOCAL1;
+  if(fac == "local2") return FAC_LOCAL2;
+  if(fac == "local3") return FAC_LOCAL3;
+  if(fac == "local4") return FAC_LOCAL4;
+  if(fac == "local5") return FAC_LOCAL5;
+  if(fac == "local6") return FAC_LOCAL6;
+  if(fac == "local7") return FAC_LOCAL7;
+  
+  throw std::runtime_error("unknown syslog facility");
+}
+
+std::string LogTargetSyslog::facilityToString(int fac)
+{
+  switch(fac) {
+  case FAC_USER: return "user";
+  case FAC_MAIL: return "mail";
+  case FAC_DAEMON: return "daemon";
+  case FAC_AUTH: return "auth";
+  case FAC_SYSLOG: return "syslog";
+  case FAC_LPR: return "lpr";
+  case FAC_NEWS: return "news";
+  case FAC_UUCP: return "uucp";
+  case FAC_CRON: return "cron";
+  case FAC_AUTHPRIV: return "authpriv";
+  case FAC_FTP: return "ftp";
+  case FAC_LOCAL0: return "local0";
+  case FAC_LOCAL1: return "local1";
+  case FAC_LOCAL2: return "local2";
+  case FAC_LOCAL3: return "local3";
+  case FAC_LOCAL4: return "local4";
+  case FAC_LOCAL5: return "local5";
+  case FAC_LOCAL6: return "local6";
+  case FAC_LOCAL7: return "local7";
+  default: throw std::runtime_error("unknown syslog facility");
+  }
+}
+
+LogTargetSyslog::LogTargetSyslog(int prio, std::string conf) : LogTarget(prio)
+{
+  std::stringstream s(conf);
+  facility = FAC_DAEMON;
+  getline(s, logname, ',');
+  if(s.fail()) {
+    logname = "anytun";
+    return;
+  }
+  std::string fac;
+  getline(s, fac, ',');
+  if(s.fail())
+    return;
+
+  facility = LogTargetSyslog::facilityFromString(fac);
+}
+
+LogTargetSyslog::~LogTargetSyslog()
+{
+  if(opened)
+    close();
+}
+
+void LogTargetSyslog::open()
+{
+  openlog(logname.c_str(), LOG_PID, facility);
+  opened = true;
+}
+
+void LogTargetSyslog::close()
+{
+  closelog();
+  opened = false;
+}
+
+void LogTargetSyslog::log(std::string msg, int prio)
+{
+  if(!opened)
+    return;
+
+  syslog(prio | facility, "%s", msg.c_str());  
+}
+
+LogTargetSyslog& LogTargetSyslog::setLogName(std::string l)
+{
+  logname = l;
+  if(opened)
+    close();
+  open();
+  return *this;
+}
+
+LogTargetSyslog& LogTargetSyslog::setFacility(int f)
+{
+  facility = f;
+  if(opened)
+    close();
+  open();
+  return *this;
+}
+#endif
+
+
+#ifdef LOG_FILE
+LogTargetFile::LogTargetFile(int prio, std::string conf) : LogTarget(prio)
+{
+  std::stringstream s(conf);
+  getline(s, logfilename, ',');
+  if(s.fail())
+    logfilename = "anytun.log";
+}
+
+LogTargetFile::~LogTargetFile()
+{
+  if(opened)
+    close();
+}
+
+void LogTargetFile::open()
+{
+  logfile.open(logfilename.c_str(), std::fstream::out | std::fstream::app);
+  opened = logfile.is_open();
+}
+
+void LogTargetFile::close()
+{
+  if(logfile.is_open())
+    logfile.close();
+  opened = false;
+}
+
+void LogTargetFile::log(std::string msg, int prio)
+{
+  if(!opened)
+    return;
+
+  logfile << Log::prioToString(prio) << ": " << msg << std::endl;
+}
+
+LogTargetFile& LogTargetFile::setLogFilename(std::string l)
+{
+  logfilename = l;
+  if(opened)
+    close();
+  open();
+  return *this;
+}
+#endif
+
+
+#ifdef LOG_STDOUT
+LogTargetStdout::LogTargetStdout(int prio, std::ostream& s) : LogTarget(prio), stream(s)
+{
+}
+
+LogTargetStdout::~LogTargetStdout()
+{
+  if(opened)
+    close();
+}
+
+void LogTargetStdout::open()
+{
+  opened = true;
+}
+
+void LogTargetStdout::close()
+{
+  opened = false;
+}
+
+void LogTargetStdout::log(std::string msg, int prio)
+{
+  if(!opened)
+    return;
+
+  stream << "LOG-" << Log::prioToString(prio) << ": " << msg << std::endl;
+}
+#endif
+
+
+#ifdef LOG_WINEVENTLOG
+LogTargetWinEventlog::LogTargetWinEventlog(int prio, std::string conf) : LogTarget(prio)
+{
+  std::stringstream s(conf);
+  getline(s, logname, ',');
+  if(s.fail())
+    logname = "anytun";
+}
+
+LogTargetWinEventlog::~LogTargetWinEventlog()
+{
+  if(opened)
+    close();
+}
+
+void LogTargetWinEventlog::open()
+{
+  h_event_source = RegisterEventSourceA(NULL, logname.c_str());
+  if(h_event_source)
+    opened = true;
+}
+
+void LogTargetWinEventlog::close()
+{
+  if(h_event_source)
+    DeregisterEventSource(h_event_source);
+  opened = false;
+}
+
+void LogTargetWinEventlog::log(std::string msg, int prio)
+{
+  if(!opened)
+    return;
+
+  LPCTSTR lpszStrings[1];  
+  CHAR buffer[STERROR_TEXT_MAX];
+  StringCchPrintfA(buffer, STERROR_TEXT_MAX, "%s", msg.c_str());
+  lpszStrings[0] = buffer;
+  if(log.h_event_source)
+    ReportEventA(log.h_event_source_, Log::prioToEventLogType(prio), 0, prio, NULL, 1, 0, lpszStrings, NULL);
+}
+
+LogTargetEventlog& LogTargetWinEventlog::setLogName(std::string l)
+{
+  logname = l;
+  if(opened)
+    close();
+  open();
+  return *this;
+}
+
+WORD LogTargetWinEventlog::prioToEventLogType(int prio)
+{
+  switch(prio) {
+  case PRIO_EMERG: return EVENTLOG_ERROR_TYPE;
+  case PRIO_ALERT: return EVENTLOG_ERROR_TYPE;
+  case PRIO_CRIT: return EVENTLOG_ERROR_TYPE;
+  case PRIO_ERR: return EVENTLOG_ERROR_TYPE;
+  case PRIO_WARNING: return EVENTLOG_WARNING_TYPE;
+  case PRIO_NOTICE: return EVENTLOG_INFORMATION_TYPE;
+  case PRIO_INFO: return EVENTLOG_SUCCESS;
+  case PRIO_DEBUG: return EVENTLOG_INFORMATION_TYPE;
+  default: return EVENTLOG_ERROR_TYPE;
+  }
+}
+#endif