Python: Check if an IP matches or in a valid range

While implementing a certain feature, we wanted to restrict it's functionality to a range of IP's only available in the office.

To do that, you first need to download netaddr from github.

view sourceprint?

01.import netaddr

02. 

03.def cache_purge_allowed(request):

04.  client_ip = request.META.get('HTTP_X_FORWARDED_FOR', request.META.get('REMOTE_ADDR', None))

05. 

06.  if client_ip is None:

07.    return False

08. 

09.  ip = netaddr.IPAddress(client_ip)

10.  return (ip in netaddr.IPNetwork('203.34.46.0/23')) or (ip in netaddr.IPNetwork('192.168.0.0/16')) or (ip in netaddr.IPNetwork('119.225.10.1'))

The example searches through 2 IP ranges and then compares to an exact IP match.

Sources

• https://github.com/drkjam/netaddr
• checking an IP range