logging.cpp

/*
    ISA course project, 2015/2016
    Variant: FTP/SSH Honeypot
    Author: Dominika Regeciova, xregec00
*/

#include "logging.hpp"

const int BUFFERSIZE = 255;

// Function prints help for application
void Print_Help()
{
    cout << "FTP/SSH Honeypot" << endl;
    cout << "Usage: ./fakesrv -m mode -a address -p port -l logfile" << endl;
    cout << "                 [-r rsakey] [-c max_clients] [-t max_attempts]" << endl;
    cout << "Required arguments:" << endl;
    cout << "   -m mode       Mode name (ftp or ssh)" << endl;
    cout << "   -a address    IPv4 or IPv6 address" << endl;
    cout << "   -p port       Port number" << endl;
    cout << "   -l logfile    Logfile" << endl;
    cout << "Optional arguments:" << endl;
    cout << "   -r rsakey     Private RSA key, REQUIRED in ssh mode" << endl;
    cout << "   -c number     Maximal number of connected users (default 10)" << endl;
    cout << "   -t number     Maximal number of login tries (default 3) in ssh mode" << endl;
    cout << "Created by Dominika Regeciova" << endl;
    exit(RESULT_FAILURE);
}

// Function for printing error message in the whole project
void Print_Error(string message)
{
    cerr << message << endl;
}

// Function for printing error message and in the whole project
// with canceling the application
void Print_Error_And_Exit(string message)
{
    cerr << message << endl;
    exit(RESULT_FAILURE);
}

// Function returning actual date and time in format: YYYY-MM-DD HH:MM:SS
// How to get time and how convert it to the right format is inspirated by:
// www.informit.com/guides/content.aspx?g=cplusplus&seqNum=340
// Author: Danny Kalev
string Get_Time()
{
    // Get current time and convert it to tm
    time_t t = time(0);
    tm now = *localtime(&t);
    char current_time[BUFFERSIZE] = {0};
    const char format_time[] = "%Y-%m-%d %X";
    if (strftime(current_time, sizeof(current_time)-1, format_time, &now) > 0)
    {
        //string string_current_time(current_time);
        return string(current_time);
    }
    else
        return "Strftime failed.";
}

// Function for logging
// It will returns error code if file can't be open
int write_log(string logfile, string mode, string address, string name, string password)
{
    FILE *new_file;
    new_file = fopen(logfile.c_str(), "a");
    if (new_file != NULL)
    {
        string timed = Get_Time();
        stringstream ssout;
        ssout << mode << " " << timed + " " + address + " " + name + " " + password + "\n";
        string out = ssout.str();
        fprintf(new_file, "%s", out.c_str());
        fclose (new_file);
        return RESULT_OK;
    }
    return RESULT_FAILURE;
}