Networking related Python Functions

Networking.py

import re
import socket
import struct
import platform
import subprocess

# https://stackoverflow.com/a/166589
def getWANIP():
    s = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
    s.connect(("8.8.8.8", 80))
    IP = s.getsockname()[0]
    s.close()
    return IP

# https://www.kite.com/python/answers/how-to-get-the-local-ip-address-in-python
def getIP():
    return socket.gethostbyname(socket.gethostname())

def validateIP(ip):
  if (not(re.match(r"^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}$",ip))):
      try:
          return socket.gethostbyname(ip)
      except:
          print(" Invalid Host!")
          return -1
  else:
    return ip

def validatePort(port):
  if (not (1 <= port <= 65535)):
      print(" That port can't be used!")
      return -1

# https://github.com/AnthraX1/InsightScan/blob/f0f258120b7fb230fb2749c212fa2cb19a347e3a/scanner.py#L276
def ip2bin(ip):
    """
    Convert an IP address from its dotted-quad format to
    its 32 binary digit representation
    """
    b = ""
    inQuads = ip.split(".")
    outQuads = 4
    for q in inQuads:
        if q != "":
        b += dec2bin(int(q),8)
	outQuads -= 1
	while outQuads > 0:
	    b += "00000000"
	    outQuads -= 1
	return b

# All of the 4 Functions from: https://stackoverflow.com/a/819420
def makeMask(n):
    "Return a mask of n bits as a long integer"
    return (2L<<n-1) - 1

def dottedQuadToNum(ip):
    "Convert decimal dotted quad string to long integer"
    return struct.unpack('L',socket.inet_aton(ip))[0]

def networkMask(ip,bits):
    "Convert a network address to a long integer"
    return dottedQuadToNum(ip) & makeMask(bits)

def addressInNetwork(ip,net):
    "Is an address in a network"
    return ip & net == net

# https://stackoverflow.com/a/32684938
def ping(host):
    """
    Returns True if host (str) responds to a ping request.
    Remember that a host may not respond to a ping (ICMP) request even if the host name is valid.
    """

    # Option for the number of packets as a function of
    param = '-n' if platform.system().lower()=='windows' else '-c'

    # Building the command. Ex: "ping -c 1 google.com"
    command = ['ping', param, '1', host]

    return subprocess.call(command) == 0