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roa.py: needs py37

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This commit is contained in:
JerryXiao 2020-05-13 21:09:30 +08:00
parent 09d9edcbb2
commit b820deb165
Signed by: Jerry
GPG key ID: 9D9CE43650FF2BAA
1 changed files with 14 additions and 10 deletions
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24
scripts/roa.py
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@ -9,9 +9,7 @@ import re
NEONET_ADDR_POOL = ('10.127.0.0/16', 'fd10:127::/32')
NEONET_ADDR_POOL = [ip_network(neo) for neo in NEONET_ADDR_POOL]
IS_NEONET = lambda net: bool([True for neo in NEONET_ADDR_POOL if net.version == neo.version and net.subnet_of(neo)])
if not hasattr(IPv4Network, 'subnet_of'):
IS_NEONET = lambda x: True
print('# [!] IPv4Network has no attr subnet_of, please consider upgrading your python installation')
assert hasattr(IPv4Network, 'subnet_of') # needs at least python 3.7
class BashParser:
def __init__(self):
@ -171,16 +169,22 @@ def neonet_route2roa(dirname, is_ipv6=False):
print("[!] Error while processing file", f)
raise
roa_entries.sort(key=lambda l: l['asn'])
l_prefix = [_roa['prefix'] for _roa in roa_entries]
for _net1, _net2 in combinations(roa_entries, 2):
net1, net2 = sorted([_net1, _net2], key=lambda net: net['prefix'].prefixlen)
if net1['prefix'].overlaps(net2['prefix']):
if net1['prefix'] != net2['prefix'] and net1['prefix'].supernet_of(net2['prefix']) \
and net2['supernet'] == net1['prefix']:
# This is allowed
pass
else:
print("[!] Error: found", net2, "overlaps", net1)
raise AssertionError # if this is intended, please include SUPERNET=<cidr> in your route
try:
assert net1['prefix'] != net2['prefix']
assert net1['prefix'].supernet_of(net2['prefix'])
s1net, s2net= (net1['supernet'], net2['supernet'])
assert s2net # please include SUPERNET=<cidr> in your route
# if net1(the bigger net) has a supernet s1net, then s1net and net1
# will be checked or must have been checked, same for net2
assert not s1net or s1net in l_prefix # net1.supernet is garbage
assert s2net == net1['prefix'] or s2net in l_prefix # net2.supernet is garbage
except AssertionError:
print("[!] Error: found", net1, "overlaps", net2)
raise
return roa_entries
if __name__ == "__main__":