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Filter IPv6 by ASN

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This commit is contained in:
Emil 2019-04-17 17:32:05 +00:00
parent 0c9de67f34
commit 316b8b2339
1 changed files with 18 additions and 9 deletions
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27
contrib/seeds/makeseeds.py
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@ -109,18 +109,30 @@ def filtermultiport(ips):
# Based on Greg Maxwell's seed_filter.py
def filterbyasn(ips, max_per_asn, max_total):
# Sift out ips by type
ips_ipv4 = [ip for ip in ips if ip['net'] == 'ipv4']
ips_ipv6 = [ip for ip in ips if ip['net'] == 'ipv6']
ips_ipv46 = [ip for ip in ips if ip['net'] in ['ipv4', 'ipv6']]
ips_onion = [ip for ip in ips if ip['net'] == 'onion']
# Filter IPv4 by ASN
# Filter IPv46 by ASN
result = []
asn_count = {}
for ip in ips_ipv4:
for ip in ips_ipv46:
if len(result) == max_total:
break
try:
asn = int([x.to_text() for x in dns.resolver.query('.'.join(reversed(ip['ip'].split('.'))) + '.origin.asn.cymru.com', 'TXT').response.answer][0].split('\"')[1].split(' ')[0])
if ip['net'] == 'ipv4':
ipaddr = ip['ip']
prefix = '.origin'
else: # http://www.team-cymru.com/IP-ASN-mapping.html
res = str() # 2001:4860:b002:23::68
for nb in ip['ip'].split(':')[:4]: # pick the first 4 nibbles
for c in nb.zfill(4): # right padded with '0'
res += c + '.' # 2001 4860 b002 0023
ipaddr = res.rstrip('.') # 2.0.0.1.4.8.6.0.b.0.0.2.0.0.2.3
prefix = '.origin6'
asn = int([x.to_text() for x in dns.resolver.query('.'.join(
reversed(ipaddr.split('.'))) + prefix + '.asn.cymru.com',
'TXT').response.answer][0].split('\"')[1].split(' ')[0])
if asn not in asn_count:
asn_count[asn] = 0
if asn_count[asn] == max_per_asn:
@ -130,10 +142,7 @@ def filterbyasn(ips, max_per_asn, max_total):
except:
sys.stderr.write('ERR: Could not resolve ASN for "' + ip['ip'] + '"\n')
# TODO: filter IPv6 by ASN
# Add back non-IPv4
result.extend(ips_ipv6)
# Add back Onions
result.extend(ips_onion)
return result