Commit af581ee6 by Bach Dániel

firewall: add new IP allocation policy

fixes #88
parent 0dce6c0d
# -*- coding: utf-8 -*-
from itertools import islice
from itertools import islice, chain
import logging
from netaddr import IPSet
......@@ -298,13 +298,28 @@ class Vlan(AclBase, models.Model):
def prefix6(self):
return self.network6.prefixlen
def get_next_address(self, used_v4):
last_address = list(used_v4)[-1]
except IndexError:
return []
next_address = last_address + 1
if next_address in self.network4.iter_hosts():
logger.debug("Found unused IPv4 address %s after %s.",
next_address, last_address)
return [next_address]
return []
def get_new_address(self):
hosts = Host.objects.filter(vlan=self)
hosts = self.host_set
used_v4 = IPSet(hosts.values_list('ipv4', flat=True))
used_v6 = IPSet(hosts.exclude(ipv6__isnull=True)
.values_list('ipv6', flat=True))
for ipv4 in islice(self.network4.iter_hosts(), 10000):
for ipv4 in chain(self.get_next_address(used_v4),
islice(self.network4.iter_hosts(), 10000)):
ipv4 = str(ipv4)
if ipv4 not in used_v4:
logger.debug("Found unused IPv4 address %s.", ipv4)
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