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# Copyright (C) 2017 Jan Jancar
#
# This file is a part of the Mailman PGP plugin.
#
# This program is free software; you can redistribute it and/or modify it under
# the terms of the GNU General Public License as published by the Free
# Software Foundation, either version 3 of the License, or (at your option)
# any later version.
#
# This program is distributed in the hope that it will be useful, but WITHOUT
# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
# FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
# more details.
#
# You should have received a copy of the GNU General Public License along with
# this program. If not, see <http://www.gnu.org/licenses/>.
""""""
import os
from email import message_from_bytes
from operator import attrgetter
from unittest import TestCase
from mailman.email.message import Message
from pgpy import PGPKey
from pkg_resources import resource_string
from mailman_pgp.testing.layers import PGPLayer
from mailman_pgp.utils.pgp import revoc_from_blob
def load_message(path):
data = resource_string('mailman_pgp.pgp.tests',
os.path.join('data', 'messages', path))
return message_from_bytes(data, Message)
def load_key(path):
key, _ = PGPKey.from_blob(
resource_string('mailman_pgp.pgp.tests',
os.path.join('data', 'keys', path)))
return key
def load_revoc(path):
return revoc_from_blob(resource_string('mailman_pgp.pgp.tests',
os.path.join('data', 'revocs',
path)))
def payload_equal(one_msg, other_msg):
one_payload = one_msg.get_payload()
other_payload = other_msg.get_payload()
if isinstance(one_payload, list) and isinstance(other_payload, list):
if len(one_payload) != len(other_payload):
return False
for one_inner, other_inner in zip(one_payload, other_payload):
if not payload_equal(one_inner, other_inner):
return False
return True
else:
return one_payload == other_payload
class WrapperTestCase(TestCase):
layer = PGPLayer
wrapper = None
maxDiff = None
def wrap(self, message):
return self.wrapper(message)
def is_signed(self, message, signed):
wrapped = self.wrap(message)
self.assertEqual(wrapped.is_signed(), signed)
def has_signature(self, message, has):
wrapped = self.wrap(message)
self.assertEqual(wrapped.has_signature(), has)
def sign(self, message, key):
wrapped = self.wrap(message)
signed = wrapped.sign(key)
signed_wrapped = self.wrap(signed)
self.assertTrue(signed_wrapped.is_signed())
def sign_verify(self, message, priv, pub):
wrapped = self.wrap(message)
signed = wrapped.sign(priv)
signed_wrapped = self.wrap(signed)
for signature in signed_wrapped.verify(pub):
self.assertTrue(bool(signature))
def verify(self, message, key, valid):
wrapped = self.wrap(message)
for signature in wrapped.verify(key):
self.assertEqual(bool(signature), valid)
def is_encrypted(self, message, encrypted):
wrapped = self.wrap(message)
self.assertEqual(wrapped.is_encrypted(), encrypted)
def has_encryption(self, message, has):
wrapped = self.wrap(message)
self.assertEqual(wrapped.has_encryption(), has)
def encrypt(self, message, *keys, **kwargs):
wrapped = self.wrap(message)
encrypted = wrapped.encrypt(*keys, **kwargs)
encrypted_wrapped = self.wrap(encrypted)
self.assertTrue(encrypted_wrapped.is_encrypted())
def encrypt_decrypt(self, message, pub, priv):
wrapped = self.wrap(message)
encrypted = wrapped.encrypt(pub)
encrypted_wrapped = self.wrap(encrypted)
decrypted = encrypted_wrapped.decrypt(priv)
decrypted_wrapped = self.wrap(decrypted)
self.assertFalse(decrypted_wrapped.is_encrypted())
self.assertTrue(payload_equal(decrypted, message))
def decrypt(self, message, key, clear):
wrapped = self.wrap(message)
decrypted = wrapped.decrypt(key)
decrypted_wrapped = self.wrap(decrypted)
self.assertFalse(decrypted_wrapped.is_encrypted())
self.assertEqual(decrypted.get_payload(), clear)
def has_keys(self, message, has_keys):
wrapped = self.wrap(message)
self.assertEqual(wrapped.has_keys(), has_keys)
def is_keys(self, message, is_keys):
wrapped = self.wrap(message)
self.assertEqual(wrapped.is_keys(), is_keys)
def keys(self, message, keys):
wrapped = self.wrap(message)
loaded = list(wrapped.keys())
self.assertEqual(len(loaded), len(keys))
loaded_fingerprints = list(map(attrgetter('fingerprint'), loaded))
fingerprints = list(map(attrgetter('fingerprint'), keys))
self.assertListEqual(loaded_fingerprints, fingerprints)
def attach_keys(self, message, keys):
wrapped = self.wrap(message)
attached = wrapped.attach_keys(*keys)
wrapped = self.wrap(attached)
loaded = list(wrapped.keys())
self.assertTrue(wrapped.has_keys())
loaded_fingerprints = list(map(attrgetter('fingerprint'), loaded))
fingerprints = list(map(attrgetter('fingerprint'), keys))
self.assertListEqual(loaded_fingerprints, fingerprints)
def has_revocs(self, message, has_revocs):
wrapped = self.wrap(message)
self.assertEqual(wrapped.has_revocs(), has_revocs)
def is_revocs(self, message, is_revocs):
wrapped = self.wrap(message)
self.assertEqual(wrapped.is_revocs(), is_revocs)
def revocs(self, message, revocs):
wrapped = self.wrap(message)
loaded = list(wrapped.revocs())
self.assertEqual(len(loaded), len(revocs))
loaded_issuers = list(map(attrgetter('signer'), loaded))
issuers = list(map(attrgetter('signer'), revocs))
self.assertListEqual(loaded_issuers, issuers)
def attach_revocs(self, message, revocs):
wrapped = self.wrap(message)
attached = wrapped.attach_revocs(*revocs)
wrapped = self.wrap(attached)
loaded = list(wrapped.revocs())
self.assertTrue(wrapped.has_revocs())
loaded_issuers = list(map(attrgetter('signer'), loaded))
issuers = list(map(attrgetter('signer'), revocs))
self.assertListEqual(loaded_issuers, issuers)
def sign_encrypt_decrypt_verify(self, message, sign_key, encrypt_key):
wrapped = self.wrap(message)
encrypted = wrapped.sign_encrypt(sign_key, encrypt_key.pubkey)
encrypted_wrapped = self.wrap(encrypted)
self.assertTrue(encrypted_wrapped.is_encrypted())
decrypted = encrypted_wrapped.decrypt(encrypt_key)
decrypted_wrapped = self.wrap(decrypted)
self.assertTrue(decrypted_wrapped.is_signed())
self.assertFalse(decrypted_wrapped.is_encrypted())
verification = decrypted_wrapped.verify(sign_key.pubkey)
for sig in verification:
self.assertTrue(bool(sig))
self.assertListEqual(list(decrypted_wrapped.get_signed()),
list(wrapped.get_payload()))
def sign_then_encrypt_decrypt_verify(self, message, sign_key, encrypt_key):
wrapped = self.wrap(message)
encrypted = wrapped.sign_then_encrypt(sign_key, encrypt_key.pubkey)
encrypted_wrapped = self.wrap(encrypted)
self.assertTrue(encrypted_wrapped.is_encrypted())
decrypted = encrypted_wrapped.decrypt(encrypt_key)
decrypted_wrapped = self.wrap(decrypted)
self.assertTrue(decrypted_wrapped.is_signed())
self.assertFalse(decrypted_wrapped.is_encrypted())
verification = decrypted_wrapped.verify(sign_key.pubkey)
for sig in verification:
self.assertTrue(bool(sig))
self.assertListEqual(list(decrypted_wrapped.get_signed()),
list(wrapped.get_payload()))
def decrypt_verify(self, message, decrypt_key, verify_key, valid):
wrapped = self.wrap(message)
decrypted = wrapped.decrypt(decrypt_key)
decrypted_wrapped = self.wrap(decrypted)
self.assertFalse(decrypted_wrapped.is_encrypted())
self.assertTrue(decrypted_wrapped.is_signed())
verification = decrypted_wrapped.verify(verify_key)
for sig in verification:
self.assertEqual(bool(sig), valid)
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