mirror of https://github.com/CIRCL/AIL-framework
187 lines
6.5 KiB
Python
Executable File
187 lines
6.5 KiB
Python
Executable File
#!/usr/bin/env python3
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# -*-coding:UTF-8 -*
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"""
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The Web Module
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============================
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This module tries to parse URLs and warns if some defined contry code are present.
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"""
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##################################
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# Import External packages
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##################################
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import redis
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import pprint
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import time
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import os
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import dns.exception
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from pyfaup.faup import Faup
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import re
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# Country and ASN lookup
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from cymru.ip2asn.dns import DNSClient as ip2asn
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import socket
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import pycountry
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import ipaddress
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##################################
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# Import Project packages
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##################################
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from module.abstract_module import AbstractModule
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from packages import Paste
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from packages import lib_refine
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from Helper import Process
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class Web(AbstractModule):
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"""
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Web module for AIL framework
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"""
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# Used to prevent concat with empty fields due to url parsing
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def avoidNone(self, a_string):
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if a_string is None:
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return ""
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else:
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return a_string
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def __init__(self):
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"""
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Init Web
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"""
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super(Web, self).__init__()
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# REDIS Cache
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self.r_serv2 = redis.StrictRedis(
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host=self.process.config.get("Redis_Cache", "host"),
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port=self.process.config.getint("Redis_Cache", "port"),
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db=self.process.config.getint("Redis_Cache", "db"),
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decode_responses=True)
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# Country to log as critical
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self.cc_critical = self.process.config.get("Url", "cc_critical")
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# FUNCTIONS #
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self.faup = Faup()
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# Protocol file path
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protocolsfile_path = os.path.join(os.environ['AIL_HOME'],
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self.process.config.get("Directories", "protocolsfile"))
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# Get all uri from protocolsfile (Used for Curve)
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uri_scheme = ""
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with open(protocolsfile_path, 'r') as scheme_file:
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for scheme in scheme_file:
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uri_scheme += scheme[:-1]+"|"
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uri_scheme = uri_scheme[:-1]
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self.url_regex = "((?i:"+uri_scheme + \
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")\://(?:[a-zA-Z0-9\.\-]+(?:\:[a-zA-Z0-9\.&%\$\-]+)*@)*(?:(?:25[0-5]|2[0-4][0-9]|[0-1]{1}[0-9]{2}|[1-9]{1}[0-9]{1}|[1-9])\.(?:25[0-5]|2[0-4][0-9]|[0-1]{1}[0-9]{2}|[1-9]{1}[0-9]{1}|[1-9]|0)\.(?:25[0-5]|2[0-4][0-9]|[0-1]{1}[0-9]{2}|[1-9]{1}[0-9]{1}|[1-9]|0)\.(?:25[0-5]|2[0-4][0-9]|[0-1]{1}[0-9]{2}|[1-9]{1}[0-9]{1}|[0-9])|localhost|(?:[a-zA-Z0-9\-]+\.)*[a-zA-Z0-9\-]+\.(?:com|edu|gov|int|mil|net|org|biz|arpa|info|name|pro|aero|coop|museum|[a-zA-Z]{2}))(?:\:[0-9]+)*(?:/(?:$|[a-zA-Z0-9\.\,\?\'\\\+&%\$#\=~_\-]+))*)"
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self.prec_filename = None
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# Send module state to logs
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self.redis_logger.info("Module %s initialized" % (self.module_name))
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def compute(self, message):
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"""
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Search for Web links from given message
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"""
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# Extract item
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filename, score = message.split()
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if self.prec_filename is None or filename != self.prec_filename:
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domains_list = set()
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PST = Paste.Paste(filename)
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client = ip2asn()
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detected_urls = PST.get_regex(self.url_regex)
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if len(detected_urls) > 0:
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to_print = 'Web;{};{};{};'.format(
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PST.p_source, PST.p_date, PST.p_name)
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self.redis_logger.info('{}Detected {} URL;{}'.format(
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to_print, len(detected_urls), PST.p_rel_path))
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for url in detected_urls:
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self.redis_logger.debug("match regex: %s" % (url))
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# self.redis_logger.debug("match regex search: %s"%(url))
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to_send = "{} {} {}".format(url, PST._get_p_date(), filename)
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self.process.populate_set_out(to_send, 'Url')
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self.redis_logger.debug("url_parsed: %s" % (to_send))
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self.faup.decode(url)
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domain = self.faup.get_domain()
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subdomain = self.faup.get_subdomain()
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self.redis_logger.debug('{} Published'.format(url))
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if subdomain is not None:
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# TODO: # FIXME: remove me
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try:
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subdomain = subdomain.decode()
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except:
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pass
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if domain is not None:
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# TODO: # FIXME: remove me
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try:
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domain = domain.decode()
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except:
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pass
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domains_list.add(domain)
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hostl = self.avoidNone(subdomain) + self.avoidNone(domain)
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try:
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socket.setdefaulttimeout(1)
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ip = socket.gethostbyname(hostl)
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# If the resolver is not giving any IPv4 address,
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# ASN/CC lookup is skip.
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l = client.lookup(ip, qType='IP')
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except ipaddress.AddressValueError:
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self.redis_logger.debug(
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f'ASN/CC lookup failed for IP {ip}')
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continue
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except:
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self.redis_logger.debug(
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f'Resolver IPv4 address failed for host {hostl}')
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continue
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cc = getattr(l, 'cc')
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asn = ''
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if getattr(l, 'asn') is not None:
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asn = getattr(l, 'asn')[2:] # remobe b'
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# EU is not an official ISO 3166 code (but used by RIPE
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# IP allocation)
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if cc is not None and cc != "EU":
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self.redis_logger.debug('{};{};{};{}'.format(hostl, asn, cc,
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pycountry.countries.get(alpha_2=cc).name))
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if cc == self.cc_critical:
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to_print = 'Url;{};{};{};Detected {} {}'.format(
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PST.p_source, PST.p_date, PST.p_name,
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hostl, cc)
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self.redis_logger.info(to_print)
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else:
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self.redis_logger.debug('{};{};{}'.format(hostl, asn, cc))
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A_values = lib_refine.checking_A_record(self.r_serv2,
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domains_list)
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if A_values[0] >= 1:
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pprint.pprint(A_values)
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# self.redis_logger.info('Url;{};{};{};Checked {} URL;{}'.format(
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# PST.p_source, PST.p_date, PST.p_name, A_values[0], PST.p_rel_path))
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self.prec_filename = filename
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if __name__ == '__main__':
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module = Web()
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module.run()
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