AIL-framework/bin/modules/PgpDump.py

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#!/usr/bin/env python3
# -*-coding:UTF-8 -*
"""
PgpDum module
Extract ID from PGP Blocks
"""
import os
import re
import time
import uuid
import redis
import signal
import datetime
import subprocess
from pubsublogger import publisher
from bs4 import BeautifulSoup
from Helper import Process
from packages import Item
from packages import Paste
from packages import Pgp
class TimeoutException(Exception):
pass
def timeout_handler(signum, frame):
raise TimeoutException
signal.signal(signal.SIGALRM, timeout_handler)
# save pgp message in directory, process one time each day
def save_in_file(message, pgp_content):
print('save in file')
UUID = str(uuid.uuid4())
file_name = os.path.join(pgp_dump_dir_to_process, UUID)
with open(file_name, 'w') as f:
f.write(pgp_content)
r_serv_db.sadd('pgpdumb:uuid', '{};{}'.format(UUID, message))
def remove_html(item_content):
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try:
if bool(BeautifulSoup(item_content, "html.parser").find()):
soup = BeautifulSoup(item_content, 'html.parser')
# kill all script and style elements
for script in soup(["script", "style"]):
script.extract() # remove
# get text
text = soup.get_text()
return text
else:
return item_content
except TypeError:
return item_content
def extract_all_id(message, item_content, regex=None, is_file=False):
if is_file:
pgp_packet = get_pgp_packet_file(item_content)
extract_id_from_output(pgp_packet)
else:
# max execution time on regex
signal.alarm(max_execution_time)
try:
pgp_extracted_block = re.findall(regex, item_content)
except TimeoutException:
pgp_extracted_block = []
p.incr_module_timeout_statistic() # add encoder type
print ("{0} processing timeout".format(paste.p_rel_path))
else:
signal.alarm(0)
for pgp_to_dump in pgp_extracted_block:
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pgp_packet = get_pgp_packet(message, pgp_to_dump)
extract_id_from_output(pgp_packet)
def get_pgp_packet(message, save_path):
save_path = '{}'.format(save_path)
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# remove Version
all_version = re.findall(regex_tool_version, save_path)
for version in all_version:
save_path = save_path.replace(version, '')
# remove comment
all_comment= re.findall(regex_block_comment, save_path)
for comment in all_comment:
save_path = save_path.replace(comment, '')
# remove empty line
save_path = [s for s in save_path.splitlines() if s]
save_path[0] = save_path[0] + '\n'
save_path[-1] = '\n' + save_path[-1]
save_path = '\n'.join(save_path)
#print(save_path)
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if len(save_path) > 131072:
save_in_file(message, save_path)
return ''
else:
process1 = subprocess.Popen([ 'echo', '-e', save_path], stdout=subprocess.PIPE)
process2 = subprocess.Popen([ 'pgpdump'], stdin=process1.stdout, stdout=subprocess.PIPE)
process1.stdout.close()
output = process2.communicate()[0]
try:
output = output.decode()
except UnicodeDecodeError:
publisher.error('Error PgpDump UnicodeDecodeError: {}'.format(message))
output = ''
return output
def get_pgp_packet_file(file):
process1 = subprocess.Popen([ 'pgpdump', file], stdout=subprocess.PIPE)
output = process1.communicate()[0].decode()
return output
def extract_id_from_output(pgp_dump_outpout):
all_user_id = set(re.findall(regex_user_id, pgp_dump_outpout))
for user_id in all_user_id:
# avoid key injection in user_id:
pgp_dump_outpout.replace(user_id, '', 1)
user_id = user_id.replace(user_id_str, '', 1)
mail = None
if ' <' in user_id:
name, mail = user_id.rsplit(' <', 1)
mail = mail[:-1]
set_name.add(name)
set_mail.add(mail)
else:
name = user_id
set_name.add(name)
all_key_id = set(re.findall(regex_key_id, pgp_dump_outpout))
for key_id in all_key_id:
key_id = key_id.replace(key_id_str, '', 1)
set_key.add(key_id)
if __name__ == '__main__':
# If you wish to use an other port of channel, do not forget to run a subscriber accordingly (see launch_logs.sh)
# Port of the redis instance used by pubsublogger
publisher.port = 6380
# Script is the default channel used for the modules.
publisher.channel = 'Script'
# Section name in bin/packages/modules.cfg
#config_section = 'PgpDump'
config_section = 'PgpDump'
# Setup the I/O queues
p = Process(config_section)
r_serv_db = redis.StrictRedis(
host=p.config.get("ARDB_DB", "host"),
port=p.config.getint("ARDB_DB", "port"),
db=p.config.getint("ARDB_DB", "db"),
decode_responses=True)
serv_metadata = redis.StrictRedis(
host=p.config.get("ARDB_Metadata", "host"),
port=p.config.getint("ARDB_Metadata", "port"),
db=p.config.getint("ARDB_Metadata", "db"),
decode_responses=True)
# Sent to the logging a description of the module
publisher.info("PgpDump started")
# check/create pgpdump queue directory (used for huge pgp blocks)
pgp_dump_dir_to_process = os.path.join(os.environ['AIL_HOME'], 'temp', 'pgpdump')
if not os.path.isdir(pgp_dump_dir_to_process):
os.makedirs(pgp_dump_dir_to_process)
user_id_str = 'User ID - '
regex_user_id= '{}.+'.format(user_id_str)
key_id_str = 'Key ID - '
regex_key_id = '{}.+'.format(key_id_str)
regex_pgp_public_blocs = r'-----BEGIN PGP PUBLIC KEY BLOCK-----[\s\S]+?-----END PGP PUBLIC KEY BLOCK-----'
regex_pgp_signature = r'-----BEGIN PGP SIGNATURE-----[\s\S]+?-----END PGP SIGNATURE-----'
regex_pgp_message = r'-----BEGIN PGP MESSAGE-----[\s\S]+?-----END PGP MESSAGE-----'
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regex_tool_version = r"\bVersion:.*\n"
regex_block_comment = r"\bComment:.*\n"
re.compile(regex_user_id)
re.compile(regex_key_id)
re.compile(regex_pgp_public_blocs)
re.compile(regex_pgp_signature)
re.compile(regex_pgp_message)
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re.compile(regex_tool_version)
re.compile(regex_block_comment)
max_execution_time = p.config.getint("PgpDump", "max_execution_time")
# Endless loop getting messages from the input queue
while True:
is_file = False
set_key = set()
set_name = set()
set_mail = set()
if r_serv_db.scard('pgpdumb:uuid') > 0:
res = r_serv_db.spop('pgpdumb:uuid')
file_to_process, message = res.split(';', 1)
file_to_process = os.path.join(pgp_dump_dir_to_process, file_to_process)
date = datetime.datetime.now().strftime("%Y/%m/%d")
paste = Paste.Paste(message)
date = str(paste._get_p_date())
print(message)
extract_all_id(message, file_to_process, is_file=True)
os.remove(file_to_process)
else:
# Get one message from the input queue
message = p.get_from_set()
if message is None:
publisher.debug("{} queue is empty, waiting".format(config_section))
time.sleep(1)
continue
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print(message)
paste = Paste.Paste(message)
date = str(paste._get_p_date())
content = paste.get_p_content()
content = remove_html(content)
extract_all_id(message, content, regex_pgp_public_blocs)
extract_all_id(message, content, regex_pgp_signature)
extract_all_id(message, content, regex_pgp_message)
item_date = Item.get_item_date(message)
for key_id in set_key:
print(key_id)
Pgp.pgp.save_item_correlation('key', key_id, message, item_date)
for name_id in set_name:
print(name_id)
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Pgp.pgp.save_item_correlation('name', name_id, message, item_date)
for mail_id in set_mail:
print(mail_id)
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Pgp.pgp.save_item_correlation('mail', mail_id, message, item_date)