AIL-framework/bin/trackers/Tracker_Regex.py

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#!/usr/bin/env python3
# -*-coding:UTF-8 -*
"""
The Tracker_Regex trackers module
===================
This Module is used for regex tracking.
It processes every item coming from the global module and test the regex
"""
import os
import sys
import time
sys.path.append(os.environ['AIL_BIN'])
##################################
# Import Project packages
##################################
from modules.abstract_module import AbstractModule
from lib.objects import ail_objects
from lib.ConfigLoader import ConfigLoader
from lib import Tracker
from exporter.MailExporter import MailExporterTracker
from exporter.WebHookExporter import WebHookExporterTracker
class Tracker_Regex(AbstractModule):
"""
Tracker_Regex module for AIL framework
"""
def __init__(self, queue=True):
super(Tracker_Regex, self).__init__(queue=queue)
config_loader = ConfigLoader()
self.pending_seconds = 5
self.max_execution_time = config_loader.get_config_int(self.module_name, "max_execution_time")
# refresh Tracked Regex
self.tracked_regexs = Tracker.get_tracked_regexs()
self.last_refresh = time.time()
self.obj = None
# Exporter
self.exporters = {'mail': MailExporterTracker(),
'webhook': WebHookExporterTracker()}
self.redis_logger.info(f"Module: {self.module_name} Launched")
def compute(self, message):
# refresh Tracked regex
if self.last_refresh < Tracker.get_tracker_last_updated_by_type('regex'):
self.tracked_regexs = Tracker.get_tracked_regexs()
self.last_refresh = time.time()
self.redis_logger.debug('Tracked regex refreshed')
print('Tracked regex refreshed')
obj = self.get_obj()
obj_id = obj.get_id()
obj_type = obj.get_type()
# Object Filter
if obj_type not in self.tracked_regexs:
return None
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content = obj.get_content()
for dict_regex in self.tracked_regexs[obj_type]:
matches = self.regex_finditer(dict_regex['regex'], obj_id, content)
if matches:
self.new_tracker_found(dict_regex['tracked'], 'regex', obj, matches)
def extract_matches(self, re_matches, limit=500, lines=5):
matches = []
content = self.obj.get_content()
l_content = len(content)
for match in re_matches:
start = match[0]
value = match[2]
end = match[1]
# Start
if start > limit:
i_start = start - limit
else:
i_start = 0
str_start = content[i_start:start].splitlines()
if len(str_start) > lines:
str_start = '\n'.join(str_start[-lines + 1:])
else:
str_start = content[i_start:start]
# End
if end + limit > l_content:
i_end = l_content
else:
i_end = end + limit
str_end = content[end:i_end].splitlines()
if len(str_end) > lines:
str_end = '\n'.join(str_end[:lines + 1])
else:
str_end = content[end:i_end]
matches.append((value, f'{str_start}{value}{str_end}'))
return matches
def new_tracker_found(self, tracker_name, tracker_type, obj, re_matches):
obj_id = obj.get_id()
matches = None
for tracker_uuid in Tracker.get_trackers_by_tracked_obj_type(tracker_type, obj.get_type(), tracker_name):
tracker = Tracker.Tracker(tracker_uuid)
# Filter Object
filters = tracker.get_filters()
if ail_objects.is_filtered(obj, filters):
continue
print(f'new tracked regex found: {tracker_name} in {obj_id}')
self.redis_logger.warning(f'new tracked regex found: {tracker_name} in {obj_id}')
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tracker.add(obj.get_type(), obj.get_subtype(r_str=True), obj_id)
for tag in tracker.get_tags():
if obj.get_type() == 'item':
self.add_message_to_queue(message=tag, queue='Tags')
else:
obj.add_tag(tag)
if tracker.mail_export():
if not matches:
matches = self.extract_matches(re_matches)
self.exporters['mail'].export(tracker, obj, matches)
if tracker.webhook_export():
self.exporters['webhook'].export(tracker, obj)
if __name__ == "__main__":
module = Tracker_Regex()
module.run()