2018-11-07 15:37:43 +01:00
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# -*- coding: utf-8 -*-
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# Copyright 2018 New Vector Ltd
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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import os
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2018-12-21 15:56:13 +01:00
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import attr
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from netaddr import IPSet
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2018-11-07 15:37:43 +01:00
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2018-12-21 15:56:13 +01:00
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from twisted.internet._resolver import HostResolution
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from twisted.internet.address import IPv4Address, IPv6Address
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from twisted.internet.error import DNSLookupError
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from twisted.python.failure import Failure
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from twisted.test.proto_helpers import AccumulatingProtocol
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from twisted.web._newclient import ResponseDone
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2018-11-07 15:37:43 +01:00
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from synapse.config.repository import MediaStorageProviderConfig
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from synapse.util.module_loader import load_module
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from tests import unittest
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2018-12-21 15:56:13 +01:00
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from tests.server import FakeTransport
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@attr.s
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class FakeResponse(object):
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version = attr.ib()
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code = attr.ib()
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phrase = attr.ib()
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headers = attr.ib()
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body = attr.ib()
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absoluteURI = attr.ib()
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@property
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def request(self):
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@attr.s
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class FakeTransport(object):
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absoluteURI = self.absoluteURI
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return FakeTransport()
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def deliverBody(self, protocol):
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protocol.dataReceived(self.body)
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protocol.connectionLost(Failure(ResponseDone()))
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2018-11-07 15:37:43 +01:00
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class URLPreviewTests(unittest.HomeserverTestCase):
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hijack_auth = True
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user_id = "@test:user"
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2018-12-21 15:56:13 +01:00
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end_content = (
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b'<html><head>'
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b'<meta property="og:title" content="~matrix~" />'
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b'<meta property="og:description" content="hi" />'
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b'</head></html>'
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)
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2018-11-07 15:37:43 +01:00
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def make_homeserver(self, reactor, clock):
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self.storage_path = self.mktemp()
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os.mkdir(self.storage_path)
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config = self.default_config()
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config.url_preview_enabled = True
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config.max_spider_size = 9999999
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config.url_preview_ip_range_blacklist = IPSet(
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(
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"192.168.1.1",
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"1.0.0.0/8",
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"3fff:ffff:ffff:ffff:ffff:ffff:ffff:ffff",
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"2001:800::/21",
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)
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)
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config.url_preview_ip_range_whitelist = IPSet(("1.1.1.1",))
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config.url_preview_url_blacklist = []
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config.media_store_path = self.storage_path
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provider_config = {
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"module": "synapse.rest.media.v1.storage_provider.FileStorageProviderBackend",
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"store_local": True,
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"store_synchronous": False,
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"store_remote": True,
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"config": {"directory": self.storage_path},
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}
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loaded = list(load_module(provider_config)) + [
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MediaStorageProviderConfig(False, False, False)
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]
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config.media_storage_providers = [loaded]
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hs = self.setup_test_homeserver(config=config)
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return hs
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def prepare(self, reactor, clock, hs):
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self.media_repo = hs.get_media_repository_resource()
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self.preview_url = self.media_repo.children[b'preview_url']
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2018-12-21 15:56:13 +01:00
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self.lookups = {}
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class Resolver(object):
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def resolveHostName(
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_self,
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resolutionReceiver,
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hostName,
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portNumber=0,
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addressTypes=None,
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transportSemantics='TCP',
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):
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2018-11-07 15:37:43 +01:00
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2018-12-21 15:56:13 +01:00
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resolution = HostResolution(hostName)
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resolutionReceiver.resolutionBegan(resolution)
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if hostName not in self.lookups:
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raise DNSLookupError("OH NO")
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for i in self.lookups[hostName]:
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resolutionReceiver.addressResolved(i[0]('TCP', i[1], portNumber))
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resolutionReceiver.resolutionComplete()
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return resolutionReceiver
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2018-11-07 15:37:43 +01:00
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2018-12-21 15:56:13 +01:00
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self.reactor.nameResolver = Resolver()
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def test_cache_returns_correct_type(self):
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self.lookups["matrix.org"] = [(IPv4Address, "8.8.8.8")]
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request, channel = self.make_request(
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"GET", "url_preview?url=http://matrix.org", shorthand=False
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)
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request.render(self.preview_url)
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self.pump()
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2018-12-21 15:56:13 +01:00
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client = self.reactor.tcpClients[0][2].buildProtocol(None)
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server = AccumulatingProtocol()
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server.makeConnection(FakeTransport(client, self.reactor))
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client.makeConnection(FakeTransport(server, self.reactor))
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client.dataReceived(
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b"HTTP/1.0 200 OK\r\nContent-Length: %d\r\nContent-Type: text/html\r\n\r\n"
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% (len(self.end_content),)
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+ self.end_content
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)
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self.pump()
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self.assertEqual(channel.code, 200)
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self.assertEqual(
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channel.json_body, {"og:title": "~matrix~", "og:description": "hi"}
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)
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# Check the cache returns the correct response
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request, channel = self.make_request(
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"GET", "url_preview?url=http://matrix.org", shorthand=False
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)
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request.render(self.preview_url)
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self.pump()
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# Check the cache response has the same content
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self.assertEqual(channel.code, 200)
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self.assertEqual(
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channel.json_body, {"og:title": "~matrix~", "og:description": "hi"}
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)
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# Clear the in-memory cache
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self.assertIn("http://matrix.org", self.preview_url._cache)
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self.preview_url._cache.pop("http://matrix.org")
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self.assertNotIn("http://matrix.org", self.preview_url._cache)
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# Check the database cache returns the correct response
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request, channel = self.make_request(
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"GET", "url_preview?url=http://matrix.org", shorthand=False
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)
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request.render(self.preview_url)
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self.pump()
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# Check the cache response has the same content
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self.assertEqual(channel.code, 200)
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self.assertEqual(
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channel.json_body, {"og:title": "~matrix~", "og:description": "hi"}
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)
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2018-11-15 18:05:08 +01:00
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def test_non_ascii_preview_httpequiv(self):
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self.lookups["matrix.org"] = [(IPv4Address, "8.8.8.8")]
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end_content = (
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b'<html><head>'
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b'<meta http-equiv="Content-Type" content="text/html; charset=windows-1251"/>'
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b'<meta property="og:title" content="\xe4\xea\xe0" />'
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b'<meta property="og:description" content="hi" />'
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b'</head></html>'
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)
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request, channel = self.make_request(
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"GET", "url_preview?url=http://matrix.org", shorthand=False
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)
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request.render(self.preview_url)
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self.pump()
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2018-12-21 15:56:13 +01:00
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client = self.reactor.tcpClients[0][2].buildProtocol(None)
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server = AccumulatingProtocol()
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server.makeConnection(FakeTransport(client, self.reactor))
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client.makeConnection(FakeTransport(server, self.reactor))
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client.dataReceived(
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(
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b"HTTP/1.0 200 OK\r\nContent-Length: %d\r\n"
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b"Content-Type: text/html; charset=\"utf8\"\r\n\r\n"
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)
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% (len(end_content),)
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+ end_content
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)
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self.pump()
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self.assertEqual(channel.code, 200)
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self.assertEqual(channel.json_body["og:title"], u"\u0434\u043a\u0430")
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def test_non_ascii_preview_content_type(self):
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self.lookups["matrix.org"] = [(IPv4Address, "8.8.8.8")]
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end_content = (
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b'<html><head>'
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b'<meta property="og:title" content="\xe4\xea\xe0" />'
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b'<meta property="og:description" content="hi" />'
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b'</head></html>'
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)
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2018-12-21 15:56:13 +01:00
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request, channel = self.make_request(
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"GET", "url_preview?url=http://matrix.org", shorthand=False
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)
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request.render(self.preview_url)
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self.pump()
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client = self.reactor.tcpClients[0][2].buildProtocol(None)
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server = AccumulatingProtocol()
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server.makeConnection(FakeTransport(client, self.reactor))
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client.makeConnection(FakeTransport(server, self.reactor))
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client.dataReceived(
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(
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b"HTTP/1.0 200 OK\r\nContent-Length: %d\r\n"
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b"Content-Type: text/html; charset=\"windows-1251\"\r\n\r\n"
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)
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% (len(end_content),)
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+ end_content
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)
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self.pump()
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self.assertEqual(channel.code, 200)
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self.assertEqual(channel.json_body["og:title"], u"\u0434\u043a\u0430")
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2018-12-21 15:56:13 +01:00
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def test_ipaddr(self):
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"""
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IP addresses can be previewed directly.
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"""
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self.lookups["example.com"] = [(IPv4Address, "8.8.8.8")]
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request, channel = self.make_request(
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"GET", "url_preview?url=http://example.com", shorthand=False
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)
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request.render(self.preview_url)
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self.pump()
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2018-12-21 15:56:13 +01:00
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client = self.reactor.tcpClients[0][2].buildProtocol(None)
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server = AccumulatingProtocol()
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server.makeConnection(FakeTransport(client, self.reactor))
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client.makeConnection(FakeTransport(server, self.reactor))
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client.dataReceived(
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b"HTTP/1.0 200 OK\r\nContent-Length: %d\r\nContent-Type: text/html\r\n\r\n"
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% (len(self.end_content),)
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+ self.end_content
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)
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self.pump()
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self.assertEqual(channel.code, 200)
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self.assertEqual(
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channel.json_body, {"og:title": "~matrix~", "og:description": "hi"}
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)
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def test_blacklisted_ip_specific(self):
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"""
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Blacklisted IP addresses, found via DNS, are not spidered.
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"""
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self.lookups["example.com"] = [(IPv4Address, "192.168.1.1")]
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request, channel = self.make_request(
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"GET", "url_preview?url=http://example.com", shorthand=False
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)
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request.render(self.preview_url)
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self.pump()
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# No requests made.
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self.assertEqual(len(self.reactor.tcpClients), 0)
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self.assertEqual(channel.code, 403)
|
|
|
|
|
self.assertEqual(
|
|
|
|
|
channel.json_body,
|
|
|
|
|
{
|
|
|
|
|
'errcode': 'M_UNKNOWN',
|
|
|
|
|
'error': 'IP address blocked by IP blacklist entry',
|
|
|
|
|
},
|
|
|
|
|
)
|
|
|
|
|
|
|
|
|
|
def test_blacklisted_ip_range(self):
|
|
|
|
|
"""
|
|
|
|
|
Blacklisted IP ranges, IPs found over DNS, are not spidered.
|
|
|
|
|
"""
|
|
|
|
|
self.lookups["example.com"] = [(IPv4Address, "1.1.1.2")]
|
|
|
|
|
|
|
|
|
|
request, channel = self.make_request(
|
|
|
|
|
"GET", "url_preview?url=http://example.com", shorthand=False
|
|
|
|
|
)
|
|
|
|
|
request.render(self.preview_url)
|
|
|
|
|
self.pump()
|
|
|
|
|
|
|
|
|
|
self.assertEqual(channel.code, 403)
|
|
|
|
|
self.assertEqual(
|
|
|
|
|
channel.json_body,
|
|
|
|
|
{
|
|
|
|
|
'errcode': 'M_UNKNOWN',
|
|
|
|
|
'error': 'IP address blocked by IP blacklist entry',
|
|
|
|
|
},
|
|
|
|
|
)
|
|
|
|
|
|
|
|
|
|
def test_blacklisted_ip_specific_direct(self):
|
|
|
|
|
"""
|
|
|
|
|
Blacklisted IP addresses, accessed directly, are not spidered.
|
|
|
|
|
"""
|
|
|
|
|
request, channel = self.make_request(
|
|
|
|
|
"GET", "url_preview?url=http://192.168.1.1", shorthand=False
|
|
|
|
|
)
|
|
|
|
|
request.render(self.preview_url)
|
|
|
|
|
self.pump()
|
|
|
|
|
|
|
|
|
|
# No requests made.
|
|
|
|
|
self.assertEqual(len(self.reactor.tcpClients), 0)
|
|
|
|
|
self.assertEqual(channel.code, 403)
|
|
|
|
|
self.assertEqual(
|
|
|
|
|
channel.json_body,
|
|
|
|
|
{
|
|
|
|
|
'errcode': 'M_UNKNOWN',
|
|
|
|
|
'error': 'IP address blocked by IP blacklist entry',
|
|
|
|
|
},
|
|
|
|
|
)
|
|
|
|
|
|
|
|
|
|
def test_blacklisted_ip_range_direct(self):
|
|
|
|
|
"""
|
|
|
|
|
Blacklisted IP ranges, accessed directly, are not spidered.
|
|
|
|
|
"""
|
|
|
|
|
request, channel = self.make_request(
|
|
|
|
|
"GET", "url_preview?url=http://1.1.1.2", shorthand=False
|
|
|
|
|
)
|
|
|
|
|
request.render(self.preview_url)
|
|
|
|
|
self.pump()
|
|
|
|
|
|
|
|
|
|
self.assertEqual(channel.code, 403)
|
|
|
|
|
self.assertEqual(
|
|
|
|
|
channel.json_body,
|
|
|
|
|
{
|
|
|
|
|
'errcode': 'M_UNKNOWN',
|
|
|
|
|
'error': 'IP address blocked by IP blacklist entry',
|
|
|
|
|
},
|
|
|
|
|
)
|
|
|
|
|
|
|
|
|
|
def test_blacklisted_ip_range_whitelisted_ip(self):
|
|
|
|
|
"""
|
|
|
|
|
Blacklisted but then subsequently whitelisted IP addresses can be
|
|
|
|
|
spidered.
|
|
|
|
|
"""
|
|
|
|
|
self.lookups["example.com"] = [(IPv4Address, "1.1.1.1")]
|
|
|
|
|
|
|
|
|
|
request, channel = self.make_request(
|
|
|
|
|
"GET", "url_preview?url=http://example.com", shorthand=False
|
|
|
|
|
)
|
|
|
|
|
request.render(self.preview_url)
|
|
|
|
|
self.pump()
|
|
|
|
|
|
|
|
|
|
client = self.reactor.tcpClients[0][2].buildProtocol(None)
|
|
|
|
|
|
|
|
|
|
server = AccumulatingProtocol()
|
|
|
|
|
server.makeConnection(FakeTransport(client, self.reactor))
|
|
|
|
|
client.makeConnection(FakeTransport(server, self.reactor))
|
|
|
|
|
|
|
|
|
|
client.dataReceived(
|
|
|
|
|
b"HTTP/1.0 200 OK\r\nContent-Length: %d\r\nContent-Type: text/html\r\n\r\n"
|
|
|
|
|
% (len(self.end_content),)
|
|
|
|
|
+ self.end_content
|
2018-11-15 18:05:08 +01:00
|
|
|
)
|
|
|
|
|
|
|
|
|
|
self.pump()
|
|
|
|
|
self.assertEqual(channel.code, 200)
|
2018-12-21 15:56:13 +01:00
|
|
|
self.assertEqual(
|
|
|
|
|
channel.json_body, {"og:title": "~matrix~", "og:description": "hi"}
|
|
|
|
|
)
|
|
|
|
|
|
|
|
|
|
def test_blacklisted_ip_with_external_ip(self):
|
|
|
|
|
"""
|
|
|
|
|
If a hostname resolves a blacklisted IP, even if there's a
|
|
|
|
|
non-blacklisted one, it will be rejected.
|
|
|
|
|
"""
|
|
|
|
|
# Hardcode the URL resolving to the IP we want.
|
|
|
|
|
self.lookups[u"example.com"] = [
|
|
|
|
|
(IPv4Address, "1.1.1.2"),
|
|
|
|
|
(IPv4Address, "8.8.8.8"),
|
|
|
|
|
]
|
|
|
|
|
|
|
|
|
|
request, channel = self.make_request(
|
|
|
|
|
"GET", "url_preview?url=http://example.com", shorthand=False
|
|
|
|
|
)
|
|
|
|
|
request.render(self.preview_url)
|
|
|
|
|
self.pump()
|
|
|
|
|
self.assertEqual(channel.code, 403)
|
|
|
|
|
self.assertEqual(
|
|
|
|
|
channel.json_body,
|
|
|
|
|
{
|
|
|
|
|
'errcode': 'M_UNKNOWN',
|
|
|
|
|
'error': 'IP address blocked by IP blacklist entry',
|
|
|
|
|
},
|
|
|
|
|
)
|
|
|
|
|
|
|
|
|
|
def test_blacklisted_ipv6_specific(self):
|
|
|
|
|
"""
|
|
|
|
|
Blacklisted IP addresses, found via DNS, are not spidered.
|
|
|
|
|
"""
|
|
|
|
|
self.lookups["example.com"] = [
|
|
|
|
|
(IPv6Address, "3fff:ffff:ffff:ffff:ffff:ffff:ffff:ffff")
|
|
|
|
|
]
|
|
|
|
|
|
|
|
|
|
request, channel = self.make_request(
|
|
|
|
|
"GET", "url_preview?url=http://example.com", shorthand=False
|
|
|
|
|
)
|
|
|
|
|
request.render(self.preview_url)
|
|
|
|
|
self.pump()
|
|
|
|
|
|
|
|
|
|
# No requests made.
|
|
|
|
|
self.assertEqual(len(self.reactor.tcpClients), 0)
|
|
|
|
|
self.assertEqual(channel.code, 403)
|
|
|
|
|
self.assertEqual(
|
|
|
|
|
channel.json_body,
|
|
|
|
|
{
|
|
|
|
|
'errcode': 'M_UNKNOWN',
|
|
|
|
|
'error': 'IP address blocked by IP blacklist entry',
|
|
|
|
|
},
|
|
|
|
|
)
|
|
|
|
|
|
|
|
|
|
def test_blacklisted_ipv6_range(self):
|
|
|
|
|
"""
|
|
|
|
|
Blacklisted IP ranges, IPs found over DNS, are not spidered.
|
|
|
|
|
"""
|
|
|
|
|
self.lookups["example.com"] = [(IPv6Address, "2001:800::1")]
|
|
|
|
|
|
|
|
|
|
request, channel = self.make_request(
|
|
|
|
|
"GET", "url_preview?url=http://example.com", shorthand=False
|
|
|
|
|
)
|
|
|
|
|
request.render(self.preview_url)
|
|
|
|
|
self.pump()
|
|
|
|
|
|
|
|
|
|
self.assertEqual(channel.code, 403)
|
|
|
|
|
self.assertEqual(
|
|
|
|
|
channel.json_body,
|
|
|
|
|
{
|
|
|
|
|
'errcode': 'M_UNKNOWN',
|
|
|
|
|
'error': 'IP address blocked by IP blacklist entry',
|
|
|
|
|
},
|
|
|
|
|
)
|
