smokephil/extract_otp_secret_keys
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refactor to satisfy flak8

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scito 2022-09-03 16:12:28 +02:00 • committed by Roland Kurmann
parent 7f8250c0a6
commit 175e7c38e5
5 changed files with 37 additions and 8 deletions
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23
extract_otp_secret_keys.py
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@ -49,17 +49,20 @@ import csv
import json
from urllib.parse import parse_qs, urlencode, urlparse, quote
from os import path, mkdir
from re import sub, compile as rcompile
from re import compile as rcompile
import protobuf_generated_python.google_auth_pb2
# https://stackoverflow.com/questions/40226049/find-enums-listed-in-python-descriptor-for-protobuf
def get_enum_name_by_number(parent, field_name):
field_value = getattr(parent, field_name)
return parent.DESCRIPTOR.fields_by_name[field_name].enum_type.values_by_number.get(field_value).name
def convert_secret_from_bytes_to_base32_str(bytes):
return str(base64.b32encode(bytes), 'utf-8').replace('=', '')
def save_qr(data, name):
global verbose
qr = QRCode()
@ -68,11 +71,13 @@ def save_qr(data, name):
if verbose: print('Saving to {}'.format(name))
img.save(name)
def print_qr(data):
qr = QRCode()
qr.add_data(data)
qr.print_ascii()
def parse_args(sys_args):
arg_parser = argparse.ArgumentParser()
arg_parser.add_argument('--verbose', '-v', help='verbose output', action='store_true')
@ -88,9 +93,11 @@ def parse_args(sys_args):
sys.exit(1)
return args
def sys_main():
main(sys.argv[1:])
def main(sys_args):
global verbose, quiet
args = parse_args(sys_args)
@ -102,6 +109,7 @@ def main(sys_args):
write_csv(args, otps)
write_json(args, otps)
def extract_otps(args):
global verbose, quiet
quiet = args.quiet
@ -115,7 +123,7 @@ def extract_otps(args):
if not line.startswith('otpauth-migration://'): print('\nWARN: line is not a otpauth-migration:// URL\ninput file: {}\nline "{}"\nProbably a wrong file was given'.format(args.infile, line))
parsed_url = urlparse(line)
params = parse_qs(parsed_url.query)
if not 'data' in params:
if 'data' not in params:
print('\nERROR: no data query parameter in input URL\ninput file: {}\nline "{}"\nProbably a wrong file was given'.format(args.infile, line))
sys.exit(1)
data_encoded = params['data'][0]
@ -135,7 +143,7 @@ def extract_otps(args):
if otp.issuer and not quiet: print('Issuer: {}'.format(otp.issuer))
otp_type = get_enum_name_by_number(otp, 'type')
if not quiet: print('Type: {}'.format(otp_type))
url_params = { 'secret': secret }
url_params = {'secret': secret}
if otp.type == 1: url_params['counter'] = otp.counter
if otp.issuer: url_params['issuer'] = otp.issuer
otp_url = 'otpauth://{}/{}?'.format('totp' if otp.type == 2 else 'hotp', quote(otp.name)) + urlencode(url_params)
@ -143,7 +151,7 @@ def extract_otps(args):
if args.printqr:
print_qr(otp_url)
if args.saveqr:
if not(path.exists('qr')): mkdir('qr')
if not (path.exists('qr')): mkdir('qr')
pattern = rcompile(r'[\W_]+')
file_otp_name = pattern.sub('', otp.name)
file_otp_issuer = pattern.sub('', otp.issuer)
@ -156,9 +164,10 @@ def extract_otps(args):
"issuer": otp.issuer,
"type": otp_type,
"url": otp_url
})
})
return otps
def write_csv(args, otps):
global verbose, quiet
if args.csv and len(otps) > 0:
@ -168,12 +177,14 @@ def write_csv(args, otps):
writer.writerows(otps)
if not quiet: print("Exported {} otps to csv".format(len(otps)))
def write_json(args, otps):
global verbose, quiet
if args.json:
with open(args.json, "w") as outfile:
json.dump(otps, outfile, indent = 4)
json.dump(otps, outfile, indent=4)
if not quiet: print("Exported {} otp entries to json".format(len(otps)))
if __name__ == '__main__':
sys_main()