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Add conflict resolution unit tests, fix bugs in conflict resolution

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s3lph 2022-04-15 21:13:10 +02:00
parent 4808b6d40b
commit 294f299175
2 changed files with 340 additions and 11 deletions
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15
multischleuder/conflict.py
View file

@ -109,9 +109,9 @@ class KeyConflictResolution:
def __init__(self, smtp: 'SmtpClient', interval: int, statefile: str, template: str):
self._smtp = smtp
self._interval: int
self._interval: int = interval
self._state_file: str = statefile
self._template: str = statefile
self._template: str = template
self._messages: List[ConflictMessage] = []
self._logger: logging.Logger = logging.getLogger()
@ -129,10 +129,11 @@ class KeyConflictResolution:
target: str,
mail_from: str,
subscriptions: List['SchleuderSubscriber']) -> 'SchleuderSubscriber':
if len({s.email for s in subscriptions}) != 1:
raise ValueError('Number of unique subscriptions must be 1')
if len(subscriptions) == 1:
return subscriptions[0]
if len({s.key.blob for s in subscriptions}) == 1:
# No conflict if all keys are the same
return subscriptions[0]
# Conflict Resolution: Choose the OLDEST subscriptions, but notify using ALL keys
earliest: SchleuderSubscriber = min(subscriptions, key=lambda x: x.created_at)
self._logger.debug(f'Key Conflict for {earliest.email} in lists, chose {earliest.schleuder}:')
@ -143,8 +144,8 @@ class KeyConflictResolution:
target,
earliest,
subscriptions,
self._template,
mail_from
mail_from,
self._template
)
self._messages.append(msg)
# Return the result of conflict resolution
@ -168,11 +169,11 @@ class KeyConflictResolution:
f.truncate()
json.dump(state, f)
# Finally send the mails
if len(msgs) > 0 and not dry_run:
with self._smtp as smtp:
for m in msgs:
msg = m.mime
self._logger.debug(f'MIME Message:\n{str(m)}')
if not dry_run:
self._logger.info(f'Sending key conflict message to {msg["To"]}')
smtp.send_message(msg)
# Clear conflict messages

328
multischleuder/test/test_conflict.py Normal file
View file

@ -0,0 +1,328 @@
import io
import json
import unittest
from datetime import datetime, timedelta
from unittest.mock import patch, mock_open, MagicMock
import pgpy # type: ignore
from dateutil.tz import tzutc
from multischleuder.conflict import ConflictMessage, KeyConflictResolution
from multischleuder.types import SchleuderKey, SchleuderList, SchleuderSubscriber
# 2FBBC0DF97FDBF1E4B704EEDE39EF4FAC420BEB6
_PRIVKEY_1, _ = pgpy.PGPKey.from_blob('''
-----BEGIN PGP PRIVATE KEY BLOCK-----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=b9XF
-----END PGP PRIVATE KEY BLOCK-----
''')
# 135AFA0FB3FF584828911208B7913308392972A4
_PRIVKEY_2, _ = pgpy.PGPKey.from_blob('''
-----BEGIN PGP PRIVATE KEY BLOCK-----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=
=UiF7
-----END PGP PRIVATE KEY BLOCK-----
''')
_TEMPLATE = '''{{
"subscriber": "{subscriber}",
"schleuder": "{schleuder}",
"chosen": "{chosen}"
}}'''
_CONFLICT_STATE_NONE = '{}'
_CONFLICT_STATE_STALE = '''{
"53e707b460c062a2e705f59750f9297dae002a17": 123456
}'''
_CONFLICT_STATE_RECENT = f'''{{
"53e707b460c062a2e705f59750f9297dae002a17": {int((datetime.utcnow() - timedelta(hours=6)).timestamp())}
}}'''
class TestKeyConflictResolution(unittest.TestCase):
def test_order_resistent_hash(self):
sch1 = SchleuderList(42, 'test-north@schleuder.example.org', '474777DA74528A7021184C8A0017324A6CFFBF92')
key1 = SchleuderKey(_PRIVKEY_1.fingerprint.replace(' ', ''), 'foo@example.org', str(_PRIVKEY_1.pubkey), sch1.id)
date1 = datetime(2022, 4, 15, 5, 23, 42, 0, tzinfo=tzutc())
sub1 = SchleuderSubscriber(3, 'foo@example.org', key1, sch1.id, date1)
sch2 = SchleuderList(23, 'test-south@schleuder.example.org', 'AF586C0625CF77BBB659747515D41C5D84BF99D3')
key2 = SchleuderKey(_PRIVKEY_2.fingerprint.replace(' ', ''), 'foo@example.org', str(_PRIVKEY_2.pubkey), sch2.id)
date2 = datetime(2022, 4, 13, 5, 23, 42, 0, tzinfo=tzutc())
sub2 = SchleuderSubscriber(7, 'foo@example.org', key2, sch2.id, date2)
msg1 = ConflictMessage(
schleuder='',
chosen=sub2,
affected=[sub1, sub2],
mail_from='',
template='')
msg2 = ConflictMessage(
schleuder='',
chosen=sub2,
affected=[sub2, sub1],
mail_from='',
template='')
msg3 = ConflictMessage(
schleuder='',
chosen=sub1,
affected=[sub2, sub1],
mail_from='',
template='')
msg4 = ConflictMessage(
schleuder='foo',
chosen=sub1,
affected=[sub2, sub1],
mail_from='bar',
template='baz')
self.assertEqual(msg1.digest, msg2.digest)
self.assertNotEqual(msg1.digest, msg3.digest)
self.assertEqual(msg3.digest, msg4.digest)
def test_empty(self):
kcr = KeyConflictResolution(None, 3600, '/tmp/state.json', _TEMPLATE)
self.assertEqual(0, len(kcr.resolve('', '', [])))
self.assertEqual(0, len(kcr._messages))
def test_one(self):
sch1 = SchleuderList(42, 'test-north@schleuder.example.org', '474777DA74528A7021184C8A0017324A6CFFBF92')
key1 = SchleuderKey(_PRIVKEY_1.fingerprint.replace(' ', ''), 'foo@example.org', str(_PRIVKEY_1.pubkey), sch1.id)
date1 = datetime(2022, 4, 15, 5, 23, 42, 0, tzinfo=tzutc())
sub1 = SchleuderSubscriber(3, 'foo@example.org', key1, sch1.id, date1)
kcr = KeyConflictResolution(None, 3600, '/tmp/state.json', _TEMPLATE)
resolved = kcr.resolve('', '', [sub1])
self.assertEqual(1, len(resolved))
self.assertEqual(sub1, resolved[0])
self.assertEqual(0, len(kcr._messages))
def test_same_keys_conflict(self):
sch1 = SchleuderList(42, 'test-north@schleuder.example.org', '474777DA74528A7021184C8A0017324A6CFFBF92')
key1 = SchleuderKey(_PRIVKEY_1.fingerprint.replace(' ', ''), 'foo@example.org', str(_PRIVKEY_1.pubkey), sch1.id)
date1 = datetime(2022, 4, 15, 5, 23, 42, 0, tzinfo=tzutc())
sub1 = SchleuderSubscriber(3, 'foo@example.org', key1, sch1.id, date1)
# Same key
sch2 = SchleuderList(23, 'test-south@schleuder.example.org', 'AF586C0625CF77BBB659747515D41C5D84BF99D3')
key2 = SchleuderKey(_PRIVKEY_1.fingerprint.replace(' ', ''), 'foo@example.org', str(_PRIVKEY_1.pubkey), sch2.id)
date2 = datetime(2022, 4, 13, 5, 23, 42, 0, tzinfo=tzutc())
sub2 = SchleuderSubscriber(7, 'foo@example.org', key2, sch2.id, date2)
kcr = KeyConflictResolution(None, 3600, '/tmp/state.json', _TEMPLATE)
resolved = kcr.resolve(
target='test@schleuder.example.org',
mail_from='test-owner@schleuder.example.org',
subscriptions=[sub1, sub2])
self.assertEqual(1, len(resolved))
self.assertEqual('2FBBC0DF97FDBF1E4B704EEDE39EF4FAC420BEB6', resolved[0].key.fingerprint)
# Same keys, no conflict message
self.assertEqual(0, len(kcr._messages))
def test_different_keys_conflict(self):
sch1 = SchleuderList(42, 'test-north@schleuder.example.org', '474777DA74528A7021184C8A0017324A6CFFBF92')
key1 = SchleuderKey(_PRIVKEY_1.fingerprint.replace(' ', ''), 'foo@example.org', str(_PRIVKEY_1.pubkey), sch1.id)
date1 = datetime(2022, 4, 15, 5, 23, 42, 0, tzinfo=tzutc())
sub1 = SchleuderSubscriber(3, 'foo@example.org', key1, sch1.id, date1)
# This subscription is older, so its key will be preferred
sch2 = SchleuderList(23, 'test-south@schleuder.example.org', 'AF586C0625CF77BBB659747515D41C5D84BF99D3')
key2 = SchleuderKey(_PRIVKEY_2.fingerprint.replace(' ', ''), 'foo@example.org', str(_PRIVKEY_2.pubkey), sch2.id)
date2 = datetime(2022, 4, 13, 5, 23, 42, 0, tzinfo=tzutc())
sub2 = SchleuderSubscriber(7, 'foo@example.org', key2, sch2.id, date2)
kcr = KeyConflictResolution(None, 3600, '/tmp/state.json', _TEMPLATE)
resolved = kcr.resolve(
target='test@schleuder.example.org',
mail_from='test-owner@schleuder.example.org',
subscriptions=[sub1, sub2])
self.assertEqual(1, len(resolved))
self.assertEqual('135AFA0FB3FF584828911208B7913308392972A4', resolved[0].key.fingerprint)
# Different keys should trigger a conflict message
self.assertEqual(1, len(kcr._messages))
msg = kcr._messages[0].mime
pgp = pgpy.PGPMessage.from_blob(msg.get_payload()[1].get_payload(decode=True))
# Verify that the message is encrypted with both keys
dec1 = _PRIVKEY_1.decrypt(pgp)
dec2 = _PRIVKEY_2.decrypt(pgp)
self.assertEqual(dec1.message, dec2.message)
payload = json.loads(dec1.message)
self.assertEqual('foo@example.org', payload['subscriber'])
self.assertEqual('test@schleuder.example.org', payload['schleuder'])
self.assertEqual('135AFA0FB3FF584828911208B7913308392972A4 foo@example.org', payload['chosen'])
def test_send_messages_nostate(self):
sch1 = SchleuderList(42, 'test-north@schleuder.example.org', '474777DA74528A7021184C8A0017324A6CFFBF92')
key1 = SchleuderKey(_PRIVKEY_1.fingerprint.replace(' ', ''), 'foo@example.org', str(_PRIVKEY_1.pubkey), sch1.id)
date1 = datetime(2022, 4, 15, 5, 23, 42, 0, tzinfo=tzutc())
date2 = datetime(2022, 4, 13, 5, 23, 42, 0, tzinfo=tzutc())
sub1 = SchleuderSubscriber(3, 'foo@example.org', key1, sch1.id, date1)
sub2 = SchleuderSubscriber(4, 'bar@example.org', key1, sch1.id, date2)
# This subscription is older, so its key will be preferred
sch2 = SchleuderList(23, 'test-south@schleuder.example.org', 'AF586C0625CF77BBB659747515D41C5D84BF99D3')
key2 = SchleuderKey(_PRIVKEY_2.fingerprint.replace(' ', ''), 'foo@example.org', str(_PRIVKEY_2.pubkey), sch2.id)
sub3 = SchleuderSubscriber(7, 'foo@example.org', key2, sch2.id, date2)
sub4 = SchleuderSubscriber(8, 'bar@example.org', key2, sch2.id, date1)
mock_smtp = MagicMock()
mock_smtp.__enter__.return_value = mock_smtp
kcr = KeyConflictResolution(mock_smtp, 3600, '/tmp/state.json', _TEMPLATE)
resolved = kcr.resolve(
target='test@schleuder.example.org',
mail_from='test-owner@schleuder.example.org',
subscriptions=[sub1, sub2, sub3, sub4])
self.assertEqual(2, len(kcr._messages))
msgs = kcr._messages
now = datetime.utcnow().timestamp()
contents = io.StringIO(_CONFLICT_STATE_NONE)
with patch('builtins.open', mock_open(read_data=_CONFLICT_STATE_NONE)) as mock_statefile:
mock_statefile().__enter__.return_value = contents
kcr.send_messages()
mock_statefile.assert_called_with('/tmp/state.json', 'a+')
mock_smtp.__enter__.assert_called_once()
self.assertEqual(2, mock_smtp.send_message.call_count)
contents.seek(0)
state = json.loads(contents.read())
self.assertEqual(2, len(state))
self.assertIn(msgs[0].digest, state)
self.assertIn(msgs[1].digest, state)
self.assertLess(now - state[msgs[0].digest], 60)
self.assertLess(now - state[msgs[1].digest], 60)
def test_send_messages_stalestate(self):
sch1 = SchleuderList(42, 'test-north@schleuder.example.org', '474777DA74528A7021184C8A0017324A6CFFBF92')
key1 = SchleuderKey(_PRIVKEY_1.fingerprint.replace(' ', ''), 'foo@example.org', str(_PRIVKEY_1.pubkey), sch1.id)
date1 = datetime(2022, 4, 15, 5, 23, 42, 0, tzinfo=tzutc())
sub1 = SchleuderSubscriber(3, 'foo@example.org', key1, sch1.id, date1)
# This subscription is older, so its key will be preferred
sch2 = SchleuderList(23, 'test-south@schleuder.example.org', 'AF586C0625CF77BBB659747515D41C5D84BF99D3')
key2 = SchleuderKey(_PRIVKEY_2.fingerprint.replace(' ', ''), 'foo@example.org', str(_PRIVKEY_2.pubkey), sch2.id)
date2 = datetime(2022, 4, 13, 5, 23, 42, 0, tzinfo=tzutc())
sub2 = SchleuderSubscriber(7, 'foo@example.org', key2, sch2.id, date2)
mock_smtp = MagicMock()
mock_smtp.__enter__.return_value = mock_smtp
kcr = KeyConflictResolution(mock_smtp, 3600, '/tmp/state.json', _TEMPLATE)
resolved = kcr.resolve(
target='test@schleuder.example.org',
mail_from='test-owner@schleuder.example.org',
subscriptions=[sub1, sub2])
self.assertEqual(1, len(kcr._messages))
msg = kcr._messages[0]
now = datetime.utcnow().timestamp()
contents = io.StringIO(_CONFLICT_STATE_STALE)
with patch('builtins.open', mock_open(read_data=_CONFLICT_STATE_STALE)) as mock_statefile:
mock_statefile().__enter__.return_value = contents
kcr.send_messages()
mock_statefile.assert_called_with('/tmp/state.json', 'a+')
mock_smtp.__enter__.assert_called_once()
self.assertEqual(1, mock_smtp.send_message.call_count)
contents.seek(0)
state = json.loads(contents.read())
self.assertEqual(1, len(state))
self.assertIn(msg.digest, state)
self.assertLess(now - state[msg.digest], 60)
def test_send_messages_recentstate(self):
sch1 = SchleuderList(42, 'test-north@schleuder.example.org', '474777DA74528A7021184C8A0017324A6CFFBF92')
key1 = SchleuderKey(_PRIVKEY_1.fingerprint.replace(' ', ''), 'foo@example.org', str(_PRIVKEY_1.pubkey), sch1.id)
date1 = datetime(2022, 4, 15, 5, 23, 42, 0, tzinfo=tzutc())
sub1 = SchleuderSubscriber(3, 'foo@example.org', key1, sch1.id, date1)
# This subscription is older, so its key will be preferred
sch2 = SchleuderList(23, 'test-south@schleuder.example.org', 'AF586C0625CF77BBB659747515D41C5D84BF99D3')
key2 = SchleuderKey(_PRIVKEY_2.fingerprint.replace(' ', ''), 'foo@example.org', str(_PRIVKEY_2.pubkey), sch2.id)
date2 = datetime(2022, 4, 13, 5, 23, 42, 0, tzinfo=tzutc())
sub2 = SchleuderSubscriber(7, 'foo@example.org', key2, sch2.id, date2)
mock_smtp = MagicMock()
mock_smtp.__enter__.return_value = mock_smtp
kcr = KeyConflictResolution(mock_smtp, 86400, '/tmp/state.json', _TEMPLATE)
resolved = kcr.resolve(
target='test@schleuder.example.org',
mail_from='test-owner@schleuder.example.org',
subscriptions=[sub1, sub2])
self.assertEqual(1, len(kcr._messages))
msg = kcr._messages[0]
now = datetime.utcnow().timestamp()
contents = io.StringIO(_CONFLICT_STATE_RECENT)
with patch('builtins.open', mock_open(read_data=_CONFLICT_STATE_RECENT)) as mock_statefile:
mock_statefile().__enter__.return_value = contents
kcr.send_messages()
mock_statefile.assert_called_with('/tmp/state.json', 'a+')
# No message should be sent
mock_smtp.__enter__.assert_not_called()
mock_smtp.send_message.assert_not_called()
# Statefile should not have been updated
contents.seek(0)
state = json.loads(contents.read())
self.assertEqual(1, len(state))
self.assertIn(msg.digest, state)
self.assertLess(now - state[msg.digest], 86460)
self.assertGreater(now - state[msg.digest], 60)
def test_send_messages_dryrun(self):
sch1 = SchleuderList(42, 'test-north@schleuder.example.org', '474777DA74528A7021184C8A0017324A6CFFBF92')
key1 = SchleuderKey(_PRIVKEY_1.fingerprint.replace(' ', ''), 'foo@example.org', str(_PRIVKEY_1.pubkey), sch1.id)
date1 = datetime(2022, 4, 15, 5, 23, 42, 0, tzinfo=tzutc())
sub1 = SchleuderSubscriber(3, 'foo@example.org', key1, sch1.id, date1)
# This subscription is older, so its key will be preferred
sch2 = SchleuderList(23, 'test-south@schleuder.example.org', 'AF586C0625CF77BBB659747515D41C5D84BF99D3')
key2 = SchleuderKey(_PRIVKEY_2.fingerprint.replace(' ', ''), 'foo@example.org', str(_PRIVKEY_2.pubkey), sch2.id)
date2 = datetime(2022, 4, 13, 5, 23, 42, 0, tzinfo=tzutc())
sub2 = SchleuderSubscriber(7, 'foo@example.org', key2, sch2.id, date2)
mock_smtp = MagicMock()
mock_smtp.__enter__.return_value = mock_smtp
kcr = KeyConflictResolution(mock_smtp, 3600, '/tmp/state.json', _TEMPLATE)
resolved = kcr.resolve(
target='test@schleuder.example.org',
mail_from='test-owner@schleuder.example.org',
subscriptions=[sub1, sub2])
self.assertEqual(1, len(kcr._messages))
msg = kcr._messages[0]
now = datetime.utcnow().timestamp()
contents = io.StringIO(_CONFLICT_STATE_STALE)
with patch('builtins.open', mock_open(read_data=_CONFLICT_STATE_STALE)) as mock_statefile:
mock_statefile().__enter__.return_value = contents
kcr.send_messages(dry_run=True)
mock_statefile.assert_called_with('/tmp/state.json', 'a+')
mock_statefile().write.assert_not_called()
mock_smtp.__enter__.assert_not_called()
mock_smtp.send_message.assert_not_called()
contents.seek(0)
self.assertEqual(_CONFLICT_STATE_STALE, contents.read())