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/*
RailControl - Model Railway Control Software
Copyright (c) 2017-2025 by Teddy / Dominik Mahrer - www.railcontrol.org
RailControl is free software; you can redistribute it and/or modify it
under the terms of the GNU General Public License as published by the
Free Software Foundation; either version 3, or (at your option) any
later version.
RailControl 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 RailControl; see the file LICENCE. If not see
<http://www.gnu.org/licenses/>.
*/
#include <cstdio> //printf
#include <cstdlib> //exit(0);
#include <cstring> //memset
#include <iostream>
#include <signal.h>
#include <sstream>
#include <unistd.h> //close; isatty
#include <vector>
#include "ArgumentHandler.h"
#include "Hardware/HardwareHandler.h"
#include "Languages.h"
#include "Logger/Logger.h"
#include "Manager.h"
#include "Network/Select.h"
#include "RailControl.h"
#include "Utils/Utils.h"
using std::vector;
using std::string;
void killRailControlIfNeeded(Logger::Logger* logger)
{
if (++stopSignalCounter < MaxStopSignalCounter)
{
return;
}
logger->Info(Languages::TextReceivedSignalKill, MaxStopSignalCounter);
exit(1);
}
void shutdownRailControlSignal(int signo)
{
Logger::Logger* logger = Logger::Logger::GetLogger("Main");
logger->Info(Languages::TextShutdownRequestedBySignal, signo);
killRailControlIfNeeded(logger);
}
void shutdownRailControlWebserver()
{
Logger::Logger* logger = Logger::Logger::GetLogger("Main");
logger->Info(Languages::TextShutdownRequestedByWebClient);
killRailControlIfNeeded(logger);
}
int main (int argc, char* argv[])
{
std::map<std::string,char> argumentMap;
argumentMap["config"] = 'c';
argumentMap["daemonize"] = 'd';
argumentMap["logfile"] = 'l';
argumentMap["help"] = 'h';
argumentMap["silent"] = 's';
ArgumentHandler argumentHandler(argc, argv, argumentMap, 'c');
const bool help = argumentHandler.GetArgumentBool('h');
if (help)
{
std::cout << "Usage: " << argv[0] << " <options>" << std::endl;
std::cout << "Options:" << std::endl;
std::cout << " --config=ConfigFile Read config file with file name ConfigFile (default ConfigFile: railcontrol.conf)" << std::endl;
std::cout << "-d --daemonize Daemonize RailControl. Implies -s" << std::endl;
std::cout << " --logfile=LogFile Write a logfile to file LogFile (default LogFile: railcontrol.log)" << std::endl;
std::cout << "-h --help Show this help" << std::endl;
std::cout << "-s --silent Omit writing to console" << std::endl;
return EXIT_SUCCESS;
}
const bool daemonize = argumentHandler.GetArgumentBool('d');
if (daemonize)
{
pid_t pid = fork();
if (pid > 0)
{
return EXIT_SUCCESS;
}
close(STDERR_FILENO);
close(STDOUT_FILENO);
close(STDIN_FILENO);
}
stopSignalCounter = 0;
signal(SIGINT, shutdownRailControlSignal);
signal(SIGTERM, shutdownRailControlSignal);
const string RailControl = "RailControl";
Utils::Utils::SetThreadName(RailControl);
Logger::Logger* logger = Logger::Logger::GetLogger("Main");
const bool silent = daemonize || argumentHandler.GetArgumentBool('s');
if (!silent)
{
logger->AddConsoleLogger();
}
const string logFileName = argumentHandler.GetArgumentString('l', "railcontrol.log");
if (logFileName.length() > 0)
{
logger->AddFileLogger(logFileName);
}
logger->Info(Languages::TextStarting, RailControl);
logger->Info(Languages::TextStartArgument, argv[0]);
const string configFileDefaultName("railcontrol.conf");
string configFileName = argumentHandler.GetArgumentString('c', configFileDefaultName);
if (configFileName.compare("") == 0)
{
configFileName = configFileDefaultName;
}
if (!Utils::Utils::FileExists(configFileName))
{
logger->Warning(Languages::TextConfigFileNotFound, configFileName, configFileDefaultName);
configFileName = configFileDefaultName;
}
if (configFileName.compare(configFileDefaultName) == 0 && !Utils::Utils::FileExists(configFileDefaultName))
{
Utils::Utils::CopyFile(logger, "railcontrol.conf.dist", configFileDefaultName);
}
Config config(configFileName);
unsigned int logKeepBackups = config.getIntValue("logkeepbackups", 10);
Utils::Utils::RemoveOldBackupFiles(logger, logFileName, logKeepBackups);
char input = 0;
{
// the main program is running in the manager.
Manager m(config);
// wait for q or r followed by \n or SIGINT or SIGTERM
do
{
if (!isatty(STDIN_FILENO) || silent)
{
Utils::Utils::SleepForSeconds(1);
}
else
{
struct timeval tv;
tv.tv_sec = 1;
tv.tv_usec = 0;
fd_set set;
FD_ZERO(&set);
FD_SET(STDIN_FILENO, &set);
int ret = TEMP_FAILURE_RETRY(select(FD_SETSIZE, &set, NULL, NULL, &tv));
if (ret > 0 && FD_ISSET(STDIN_FILENO, &set))
{
__attribute__((unused)) size_t unused = read(STDIN_FILENO, &input, sizeof(input));
}
}
} while ((input != 'q') && (input != 'r') && !isShutdownRunning());
logger->Info(Languages::TextShutdownRailControl);
} // here the destructor of manager is called and RailControl is shut down
if (input == 'r')
{
// restart RailControl
return execv(argv[0], argv);
}
else
{
// exit RailControl
return EXIT_SUCCESS;
}
}
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