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/*
Copyright (C) 2012 Intel Corporation
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library 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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include <iostream>
#include <string>
#include <getopt.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <pwd.h>
#include <grp.h>
#include <errno.h>
#include <fcntl.h>
#include <stdio.h>
#include <stdlib.h>
#include <signal.h>
#include <string.h>
#include <stdexcept>
#include <glib-object.h>
#ifdef USE_QT_CORE
#include <QCoreApplication>
#else
#include <glib.h>
#endif
#include "pluginloader.h"
#include "core.h"
#include <debugout.h>
using namespace std;
IMainLoop* mainloop = nullptr;
void interrupt(int sign)
{
signal(sign, SIG_IGN);
cout<<"Signal caught. Exiting gracefully.\n"<<endl;
/// this will cause the application to terminate and clean up:
delete mainloop;
}
void daemonize();
void printhelp(const char *argv0);
static const char shortopts[] = "hvDc:d:l:";
static const struct option longopts[] = {
{ "help", no_argument, NULL, 'h' }, ///< Print the help text
{ "version", no_argument, NULL, 'v' }, ///< Print the version text
{ "daemonise", no_argument, NULL, 'D' }, ///< Daemonise
{ "config", required_argument, NULL, 'c' },
{ "debug", required_argument, NULL, 'd' },
{ "log", required_argument, NULL, 'l' },
{ NULL, 0, NULL, 0 } ///< End
};
int main(int argc, char **argv)
{
bool isdeamonize=false;
int optc;
int th = 0;
string config="/etc/ambd/config";
ofstream logfile;
string logfn;
while ((optc = getopt_long (argc, argv, shortopts, longopts, NULL)) != -1)
{
switch (optc)
{
case 'D':
isdeamonize = true;
break;
case 'v':
cout<<PROJECT_NAME<<endl;
cout<<"Version: "<<PROJECT_VERSION<<endl;
return (0);
break;
case 'c':
cout<<"Config: "<<optarg<<endl;
config=optarg;
break;
case 'd':
th = atoi(optarg);
DebugOut::setDebugThreshhold(th);
break;
case 'l':
logfn = optarg;
break;
default:
cerr<<"Unknown option "<<optc<<endl;
printhelp(argv[0]);
return (0);
break;
}
}
if(isdeamonize)
daemonize();
if(!logfn.empty())
{
logfile.open(logfn, ios::out | ios::trunc);
DebugOut::setOutput(logfile);
}
g_type_init();
VehicleProperty::factory();
PluginLoader loader(config, new Core(), argc, argv);
if(!loader.sources().size())
{
throw std::runtime_error("No sources present. aborting");
}
mainloop = loader.mainloop();
/* Register signal handler */
signal(SIGINT, interrupt);
signal(SIGTERM, interrupt);
mainloop->exec();
if(logfile.is_open())
logfile.close();
return 0;
}
void daemonize()
{
int i=0;
if(getppid() == 1)
{
return; // already a daemon
}
if((i = fork()) < 0)
{
fprintf(stderr, "%s:%s(%d) - fork error: %s", __FILE__, __FUNCTION__, __LINE__, strerror(errno));
exit(1);
}
if(i > 0)
{
exit(0); // parent exits
} // child (daemon) continues
setsid(); // obtain a new process group
for(i = getdtablesize(); i >= 0; --i)
{
close(i); // close all descriptors
}
{ // handle standard I/O
i = open("/dev/null", O_RDWR);
dup(i);
dup(i);
}
// first instance continues
}
void printhelp(const char *argv0)
{
printf("Usage: %s [args]\n"
" [-D|--daemonise]\n"
" [-v|--version]\n"
" [-c|--config </path/to/config> \t]\n"
" [-d|--debug <level (0-5)>\t]\n"
" [-l]--log </path/to/logfile>\t]\n"
" [-h|--help]\n"
, argv0);
}
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