pscan.py

#!/usr/bin/python
import socket,sys,argparse

def resolve(host):
	try:
		address = socket.gethostbyname(host)
		return address
	except:
		print("Address resolve isnt possible")
		exit()
def scanner(address,start,end):
	c = 0

	if start >= end:
		print("Please, insert corret values")
		exit()

	for port in range(start,end):
		s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
		s.settimeout(1)
		r = s.connect_ex((address,port))
		s.close()
		if r == 0:
			print("Port",port,"is open")
			c = c + 1
	return c

if __name__ == "__main__":
	parser = argparse.ArgumentParser()
	parser.add_argument("host",help="host to check doors")
	parser.add_argument("-m","--min",help="Port to start check",type=int)
	parser.add_argument("-M","--max",help="Port to finish check",type=int)
	args = parser.parse_args()

	count = 0
	start = 1
	end   = 9999

	try:
		ip = resolve(args.host)

		print("Checking %s / %s"%(args.host,ip))

		if args.min:
			start = args.min
		if args.max:
			end = args.max

		count = scanner(ip,start,end)

		print("Found",count,"open doors")
		print("Completed successfully")

	except KeyboardInterrupt:
		print("Interrupted scan")
		print("Was found",count,"open doors before finish it")