common.h

#ifndef COMMON_H
#define COMMON_H

//Common headers and useful functions

//Standar C/C++ libraries
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <semaphore.h>
#include <iostream>
#include <time.h>
//Libconfig libraries to read configuration from file
#include <libconfig.h++>
//Named pipes libraries
#include <sys/stat.h>
#include <fcntl.h>
//Socket implementation libraries
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <netdb.h>
//Read and write of files
#include <fstream>
#include <ostream>

using namespace std;

/**
 * Outputs a readable error message and exits the program
 */
void error(const char *msg) {
    perror(msg);
    exit(1);
}

const int ACCEPTED = 0,
        INVALID = -1;

//Return true if the specified file exist

bool fileExists(const char *fileName) {
    struct stat fileExistTest;
    return (stat(fileName, &fileExistTest) == 0);
}

#endif // COMMON_H