nmap_python.py

import nmap, csv, re

nm=nmap.PortScanner()

cidr_list=[]
cidr_regex = '(?:\d{1,3}\.){3}\d{1,3}(?:/\d\d?)?'

host_count = 0
up_count = 0

def check_cidr(cidr):
 if(re.search(cidr_regex, cidr)):
 return "Valid CIDR"
 else:
 pass

def get_ip_list():
 with open('ip_ranges.csv', newline='') as csvfile:
 csvreader = csv.reader(csvfile, delimiter=',')
 for row in csvreader:
 for cidr_range in row:
 if check_cidr(cidr_range) == "Valid CIDR":
 cidr_list.append(cidr_range)
 else:
 pass

def discovery_scan(cidr):
 global host_count, up_count
 nm.scan(hosts=cidr, arguments='-PE -PU')
 hosts_list = [(x, nm[x]['status']['state']) for x in nm.all_hosts()]
 host_count += len(hosts_list)
 for host, status in hosts_list:
 if status == 'up':
 up_count +=1
 with open('output.csv', 'w', newline='') as output:
 output.write(nm.csv())

if __name__ == "__main__":
 get_ip_list()
 for cidr in cidr_list:
 print(f"Scanning range {cidr}")
 discovery_scan(cidr)
 print(f"Scanned {host_count} IPs, there are {up_count} up")