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import pytricia
from csirtg_indicator.utils.network import is_valid_ip
from pprint import pprint
PERM_WHITELIST = [
"0.0.0.0/8",
"10.0.0.0/8",
"127.0.0.0/8",
"192.168.0.0/16",
"169.254.0.0/16",
"192.0.2.0/24",
"224.0.0.0/4",
"240.0.0.0/5",
"248.0.0.0/5",
]
LARGEST_PREFIX = '8'
def _normalize(i):
bits = i.split('.')
rv = []
for b in bits:
if len(b) > 1 and b.startswith('0') and not b.startswith('0/'):
b = b[1:]
rv.append(b)
i = '.'.join(rv)
return i
# https://github.com/jsommers/pytricia
def process(data=[], whitelist=[]):
wl = pytricia.PyTricia()
for x in PERM_WHITELIST:
wl[x] = True
for y in whitelist:
y = str(_normalize(y['indicator']))
# weird bug work-around it'll insert 172.16.1.60 with a /0 at the end??
if '/' not in y:
y = '{}/32'.format(y)
wl[y] = True
for i in data:
if 'whitelist' in set(i['tags']):
continue
i['indicator'] = _normalize(i['indicator'])
if not is_valid_ip(i['indicator']):
continue
if str(i['indicator']) not in wl:
yield i
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