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23740eaa3d
During the migration the automated script to update the copyright headers accidentally got rid of some of the existing copyright lines. Reinstate them.
230 lines
7.9 KiB
Python
230 lines
7.9 KiB
Python
#
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# This file is licensed under the Affero General Public License (AGPL) version 3.
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#
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# Copyright 2021 The Matrix.org Foundation C.I.C.
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# Copyright (C) 2023 New Vector, Ltd
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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU Affero General Public License as
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# published by the Free Software Foundation, either version 3 of the
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# License, or (at your option) any later version.
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#
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# See the GNU Affero General Public License for more details:
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# <https://www.gnu.org/licenses/agpl-3.0.html>.
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#
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# Originally licensed under the Apache License, Version 2.0:
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# <http://www.apache.org/licenses/LICENSE-2.0>.
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#
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# [This file includes modifications made by New Vector Limited]
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#
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#
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from typing import Callable, List, Tuple, Type, Union
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from unittest.mock import patch
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from zope.interface import implementer
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from twisted.internet import defer
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from twisted.internet._sslverify import ClientTLSOptions
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from twisted.internet.address import IPv4Address, IPv6Address
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from twisted.internet.defer import ensureDeferred
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from twisted.internet.interfaces import IProtocolFactory
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from twisted.internet.ssl import ContextFactory
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from twisted.mail import interfaces, smtp
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from tests.server import FakeTransport
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from tests.unittest import HomeserverTestCase, override_config
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def TestingESMTPTLSClientFactory(
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contextFactory: ContextFactory,
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_connectWrapped: bool,
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wrappedProtocol: IProtocolFactory,
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) -> IProtocolFactory:
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"""We use this to pass through in testing without using TLS, but
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saving the context information to check that it would have happened.
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Note that this is what the MemoryReactor does on connectSSL.
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It only saves the contextFactory, but starts the connection with the
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underlying Factory.
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See: L{twisted.internet.testing.MemoryReactor.connectSSL}"""
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wrappedProtocol._testingContextFactory = contextFactory # type: ignore[attr-defined]
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return wrappedProtocol
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@implementer(interfaces.IMessageDelivery)
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class _DummyMessageDelivery:
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def __init__(self) -> None:
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# (recipient, message) tuples
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self.messages: List[Tuple[smtp.Address, bytes]] = []
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def receivedHeader(
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self,
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helo: Tuple[bytes, bytes],
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origin: smtp.Address,
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recipients: List[smtp.User],
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) -> None:
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return None
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def validateFrom(
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self, helo: Tuple[bytes, bytes], origin: smtp.Address
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) -> smtp.Address:
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return origin
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def record_message(self, recipient: smtp.Address, message: bytes) -> None:
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self.messages.append((recipient, message))
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def validateTo(self, user: smtp.User) -> Callable[[], interfaces.IMessageSMTP]:
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return lambda: _DummyMessage(self, user)
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@implementer(interfaces.IMessageSMTP)
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class _DummyMessage:
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"""IMessageSMTP implementation which saves the message delivered to it
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to the _DummyMessageDelivery object.
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"""
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def __init__(self, delivery: _DummyMessageDelivery, user: smtp.User):
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self._delivery = delivery
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self._user = user
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self._buffer: List[bytes] = []
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def lineReceived(self, line: bytes) -> None:
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self._buffer.append(line)
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def eomReceived(self) -> "defer.Deferred[bytes]":
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message = b"\n".join(self._buffer) + b"\n"
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self._delivery.record_message(self._user.dest, message)
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return defer.succeed(b"saved")
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def connectionLost(self) -> None:
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pass
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class SendEmailHandlerTestCaseIPv4(HomeserverTestCase):
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ip_class: Union[Type[IPv4Address], Type[IPv6Address]] = IPv4Address
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def setUp(self) -> None:
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super().setUp()
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self.reactor.lookups["localhost"] = "127.0.0.1"
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def test_send_email(self) -> None:
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"""Happy-path test that we can send email to a non-TLS server."""
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h = self.hs.get_send_email_handler()
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d = ensureDeferred(
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h.send_email(
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"foo@bar.com", "test subject", "Tests", "HTML content", "Text content"
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)
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)
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# there should be an attempt to connect to localhost:25
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self.assertEqual(len(self.reactor.tcpClients), 1)
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(host, port, client_factory, _timeout, _bindAddress) = self.reactor.tcpClients[
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0
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]
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self.assertEqual(host, self.reactor.lookups["localhost"])
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self.assertEqual(port, 25)
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# wire it up to an SMTP server
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message_delivery = _DummyMessageDelivery()
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server_protocol = smtp.ESMTP()
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server_protocol.delivery = message_delivery
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# make sure that the server uses the test reactor to set timeouts
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server_protocol.callLater = self.reactor.callLater # type: ignore[assignment]
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client_protocol = client_factory.buildProtocol(None)
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client_protocol.makeConnection(FakeTransport(server_protocol, self.reactor))
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server_protocol.makeConnection(
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FakeTransport(
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client_protocol,
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self.reactor,
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peer_address=self.ip_class(
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"TCP", self.reactor.lookups["localhost"], 1234
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),
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)
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)
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# the message should now get delivered
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self.get_success(d, by=0.1)
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# check it arrived
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self.assertEqual(len(message_delivery.messages), 1)
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user, msg = message_delivery.messages.pop()
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self.assertEqual(str(user), "foo@bar.com")
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self.assertIn(b"Subject: test subject", msg)
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@patch(
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"synapse.handlers.send_email.TLSMemoryBIOFactory",
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TestingESMTPTLSClientFactory,
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)
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@override_config(
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{
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"email": {
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"notif_from": "noreply@test",
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"force_tls": True,
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},
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}
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)
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def test_send_email_force_tls(self) -> None:
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"""Happy-path test that we can send email to an Implicit TLS server."""
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h = self.hs.get_send_email_handler()
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d = ensureDeferred(
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h.send_email(
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"foo@bar.com", "test subject", "Tests", "HTML content", "Text content"
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)
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)
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# there should be an attempt to connect to localhost:465
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self.assertEqual(len(self.reactor.tcpClients), 1)
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(
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host,
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port,
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client_factory,
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_timeout,
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_bindAddress,
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) = self.reactor.tcpClients[0]
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self.assertEqual(host, self.reactor.lookups["localhost"])
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self.assertEqual(port, 465)
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# We need to make sure that TLS is happenning
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self.assertIsInstance(
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client_factory._wrappedFactory._testingContextFactory,
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ClientTLSOptions,
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)
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# And since we use endpoints, they go through reactor.connectTCP
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# which works differently to connectSSL on the testing reactor
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# wire it up to an SMTP server
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message_delivery = _DummyMessageDelivery()
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server_protocol = smtp.ESMTP()
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server_protocol.delivery = message_delivery
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# make sure that the server uses the test reactor to set timeouts
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server_protocol.callLater = self.reactor.callLater # type: ignore[assignment]
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client_protocol = client_factory.buildProtocol(None)
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client_protocol.makeConnection(FakeTransport(server_protocol, self.reactor))
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server_protocol.makeConnection(
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FakeTransport(
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client_protocol,
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self.reactor,
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peer_address=self.ip_class(
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"TCP", self.reactor.lookups["localhost"], 1234
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),
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)
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)
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# the message should now get delivered
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self.get_success(d, by=0.1)
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# check it arrived
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self.assertEqual(len(message_delivery.messages), 1)
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user, msg = message_delivery.messages.pop()
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self.assertEqual(str(user), "foo@bar.com")
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self.assertIn(b"Subject: test subject", msg)
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class SendEmailHandlerTestCaseIPv6(SendEmailHandlerTestCaseIPv4):
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ip_class = IPv6Address
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def setUp(self) -> None:
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super().setUp()
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self.reactor.lookups["localhost"] = "::1"
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