mirror of https://github.com/CIRCL/AIL-framework
143 lines
4.9 KiB
Python
143 lines
4.9 KiB
Python
import re
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import dns.resolver
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from pubsublogger import publisher
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from datetime import timedelta
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def is_luhn_valid(card_number):
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"""Apply the Luhn algorithm to validate credit card.
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:param card_number: -- (int) card number
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"""
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r = [int(ch) for ch in str(card_number)][::-1]
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return (sum(r[0::2]) + sum(sum(divmod(d*2, 10)) for d in r[1::2])) % 10 == 0
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def checking_MX_record(r_serv, adress_set, addr_dns):
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"""Check if emails MX domains are responding.
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:param r_serv: -- Redis connexion database
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:param adress_set: -- (set) This is a set of emails adress
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:param adress_set: -- (str) This is a server dns address
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:return: (int) Number of adress with a responding and valid MX domains
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This function will split the email adress and try to resolve their domains
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names: on example@gmail.com it will try to resolve gmail.com
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"""
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#remove duplicate
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adress_set = list(set(adress_set))
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score = 0
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num = len(adress_set)
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WalidMX = set([])
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# Transforming the set into a string
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MXdomains = re.findall("@[a-zA-Z0-9.-]+\.[a-zA-Z]{2,20}", str(adress_set).lower())
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resolver = dns.resolver.Resolver()
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resolver.nameservers = [addr_dns]
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resolver.timeout = 5
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resolver.lifetime = 2
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if MXdomains != []:
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for MXdomain in set(MXdomains):
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try:
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# Already in Redis living.
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if r_serv.exists(MXdomain[1:]):
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score += 1
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WalidMX.add(MXdomain[1:])
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# Not already in Redis
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else:
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# If I'm Walid MX domain
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if resolver.query(MXdomain[1:], rdtype=dns.rdatatype.MX):
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# Gonna be added in redis.
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r_serv.setex(MXdomain[1:], 1, timedelta(days=1))
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score += 1
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WalidMX.add(MXdomain[1:])
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else:
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pass
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except dns.resolver.NoNameservers:
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publisher.debug('NoNameserver, No non-broken nameservers are available to answer the query.')
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print('NoNameserver, No non-broken nameservers are available to answer the query.')
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except dns.resolver.NoAnswer:
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publisher.debug('NoAnswer, The response did not contain an answer to the question.')
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print('NoAnswer, The response did not contain an answer to the question.')
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except dns.name.EmptyLabel:
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publisher.debug('SyntaxError: EmptyLabel')
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print('SyntaxError: EmptyLabel')
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except dns.resolver.NXDOMAIN:
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r_serv.setex(MXdomain[1:], 1, timedelta(days=1))
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publisher.debug('The query name does not exist.')
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print('The query name does not exist.')
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except dns.name.LabelTooLong:
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publisher.debug('The Label is too long')
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print('The Label is too long')
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except dns.resolver.Timeout:
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print('timeout')
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r_serv.setex(MXdomain[1:], 1, timedelta(days=1))
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except Exception as e:
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print(e)
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publisher.debug("emails before: {0} after: {1} (valid)".format(num, score))
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return (num, WalidMX)
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def checking_A_record(r_serv, domains_set):
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score = 0
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num = len(domains_set)
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WalidA = set([])
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resolver = dns.resolver.Resolver()
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resolver.nameservers = ['149.13.33.69']
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resolver.timeout = 5
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resolver.lifetime = 2
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for Adomain in domains_set:
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try:
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# Already in Redis living.
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if r_serv.exists(Adomain):
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score += 1
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WalidA.add(Adomain)
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# Not already in Redis
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else:
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# If I'm Walid domain
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if resolver.query(Adomain, rdtype=dns.rdatatype.A):
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# Gonna be added in redis.
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r_serv.setex(Adomain, 1, timedelta(days=1))
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score += 1
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WalidA.add(Adomain)
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else:
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pass
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except dns.resolver.NoNameservers:
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publisher.debug('NoNameserver, No non-broken nameservers are available to answer the query.')
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except dns.resolver.NoAnswer:
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publisher.debug('NoAnswer, The response did not contain an answer to the question.')
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except dns.name.EmptyLabel:
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publisher.debug('SyntaxError: EmptyLabel')
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except dns.resolver.NXDOMAIN:
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r_serv.setex(Adomain[1:], 1, timedelta(days=1))
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publisher.debug('The query name does not exist.')
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except dns.name.LabelTooLong:
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publisher.debug('The Label is too long')
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except Exception as e:
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print(e)
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publisher.debug("URLs before: {0} after: {1} (valid)".format(num, score))
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return (num, WalidA)
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