def renumber_lans(self, old, new):
"""
Renumber prefix and netixlan's that fall into that prefix
"""
old_prefix = ipaddress.ip_network(old)
new_prefix = ipaddress.ip_network(new)
if old_prefix.version != new_prefix.version:
self.log("[error] {}".format("New prefix needs to be of same " \
"protocol as old prefix"))
prefixes = IXLanPrefix.objects.filter(prefix=old, ixlan__ix_id=self.ix)
netixlans = NetworkIXLan.objects.filter(ixlan__ix_id=self.ix)
if self.ixlan:
self.log("Only replacing in ixlan {}".format(
self.ixlan.descriptive_name))
prefixes = prefixes.filter(ixlan=ixlan)
netixlans = netixlans.filter(ixlan=ixlan)
for prefix in prefixes:
self.log("Renumbering {} -> {}".format(prefix.descriptive_name,
new_prefix))
prefix.prefix = new_prefix
prefix.full_clean()
if self.commit:
prefix.save()
for netixlan in netixlans:
old_addr = netixlan.ipaddr(old_prefix.version)
new_addr = renumber_ipaddress(old_addr, old_prefix, new_prefix)
self.log("Renumbering {} -> {}".format(
netixlan.descriptive_name_ipv(new_addr.version), new_addr))
if new_addr.version == 4:
netixlan.ipaddr4 = new_addr
else:
netixlan.ipaddr6 = new_addr
try:
netixlan.full_clean()
except ValidationError as exc:
if not self.commit and str(exc).find("outside of prefix") > -1:
continue
else:
self.log("[error] could not renumber {}: {}".format(
old_addr, exc))
continue
except Exception as exc:
self.log("[error] could not renumber {}: {}".format(
old_addr, exc))
continue
if self.commit:
netixlan.save()
def test_renumber_ipaddress():
ip4 = renumber_ipaddress(
ipaddress.ip_address("206.41.110.48"),
ipaddress.ip_network("206.41.110.0/24"),
ipaddress.ip_network("206.41.111.0/24"),
)
assert ip4.compressed == "206.41.111.48"
ip6 = renumber_ipaddress(
ipaddress.ip_address("2001:504:41:110::20"),
ipaddress.ip_network("2001:504:41:110::/64"),
ipaddress.ip_network("2001:504:41:111::/64"),
)
assert ip6.compressed == "2001:504:41:111::20"
with pytest.raises(ValueError):
renumber_ipaddress(
ipaddress.ip_address("2001:504:41:110::20"),
ipaddress.ip_network("206.41.110.0/24"),
ipaddress.ip_network("206.41.111.0/24"),
)
with pytest.raises(ValueError):
renumber_ipaddress(
ipaddress.ip_address("2001:504:41:110::20"),
ipaddress.ip_network("2001:504:41:110::/64"),
ipaddress.ip_network("206.41.111.0/24"),
)
with pytest.raises(ValueError):
renumber_ipaddress(
ipaddress.ip_address("206.41.110.48"),
ipaddress.ip_network("206.41.0.0/21"),
ipaddress.ip_network("206.41.111.0/24"),
)