WhoisResEl

whois.py

#!python3
import sys
import socket
import dns.resolver
import ipaddress
import re

socket.setdefaulttimeout(1)
resolver = dns.resolver.Resolver()
resolver.timeout = 1
resolver.lifetime = 1

print('\tWhoisResEl')
while True:
  if (len(sys.argv) > 1):
    addr = sys.argv[1]
  else: 
    try: 
      addr=input('--IP/Host> ').strip()
    except: # EOFError:
      sys.exit(0)
  
  if (addr == 'q'): 
    sys.exit(0)
  if (not len(addr)): 
    continue
  
  try: 
    addr=ipaddress.ip_address(addr)
    host=socket.gethostbyaddr(str(addr))[0]
  except ValueError: 
    if (re.match('^[a-zA-Z0-9\.-]+$', addr)): # "Valid" hostname
      host = addr
    else: 
      print('IP/Hostname invalide')
      continue
  except socket.herror: # Reverse resovl failed
    print('Domaine introuvable')
    continue
  
  print('Host\t: '+host)
  for qtype in ('A','AAAA','TXT'): 
    try: 
      for record in resolver.query(host, qtype):
        try:
          for elt in record.strings:
            print(qtype+'\t: '+elt)
        except AttributeError:
          print(qtype+'\t: '+str(record))
    except Exception as e: 
      print(qtype+'\t: '+e.__class__.__name__)
  
  if (len(sys.argv) > 1):
    break
  else: 
    print()