#!/usr/bin/env python
 
"""
Author : pescimoro.mattia@gmail.com
Licence : GPL v3 or any later version
 
This program 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 of the License, or
any later version.
This program 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 this program. If not, see <http://www.gnu.org/licenses/>.
"""
 
import sys
import os
import nmap # import nmap.py
import time
 
try:
    nm = nmap.PortScanner() # creates an'instance of nmap.PortScanner
except nmap.PortScannerError:
    print('Nmap not found', sys.exc_info()[0])
    sys.exit(0)
except:
    print("Unexpected error:", sys.exc_info()[0])
    sys.exit(0)
 
def seek(): # defines a function to analize the network
    count = 0
    nm.scan(hosts='192.168.1.0/24', arguments='-n -sP -T4')
    # runs a quick ping sweep
 
    hosts_list = [(x) for x in nm.all_hosts()]
    # saves the host list
 
    localtime = time.asctime(time.localtime(time.time()))
    print('Local current time :', localtime)
    # print out system time
 
    for host in hosts_list: # count and print active IPs
        count = count + 1
        print('IP: {0}'.format(host))
    print('-----------------')
    return count # returns the number of addresses
 
def beep(): # avoids OS dependency with a system beep
    print('\a')
 
if __name__ == '__main__':
    count = new_count = seek()
 
    # check if the number of addresses is still the same
    while (new_count <= count):
        new_count = seek()
 
    # DANGER!!!
    print('OHSHITOHSHITOHSHITOHSHITOHSHIT!')
    beep()