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4b965c862d
Part of #9744 Removes all redundant `# -*- coding: utf-8 -*-` lines from files, as python 3 automatically reads source code as utf-8 now. `Signed-off-by: Jonathan de Jong <jonathan@automatia.nl>`
666 lines
22 KiB
Python
666 lines
22 KiB
Python
# 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 json
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import os
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import re
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from unittest.mock import patch
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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.test.proto_helpers import AccumulatingProtocol
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from tests import unittest
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from tests.server import FakeTransport
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try:
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import lxml
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except ImportError:
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lxml = None
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class URLPreviewTests(unittest.HomeserverTestCase):
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if not lxml:
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skip = "url preview feature requires lxml"
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hijack_auth = True
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user_id = "@test:user"
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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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def make_homeserver(self, reactor, clock):
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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"] = (
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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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config["url_preview_ip_range_whitelist"] = ("1.1.1.1",)
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config["url_preview_url_blacklist"] = []
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config["url_preview_accept_language"] = [
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"en-UK",
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"en-US;q=0.9",
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"fr;q=0.8",
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"*;q=0.7",
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]
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self.storage_path = self.mktemp()
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self.media_store_path = self.mktemp()
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os.mkdir(self.storage_path)
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os.mkdir(self.media_store_path)
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config["media_store_path"] = self.media_store_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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config["media_storage_providers"] = [provider_config]
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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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self.lookups = {}
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class Resolver:
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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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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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self.reactor.nameResolver = Resolver()
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def create_test_resource(self):
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return self.hs.get_media_repository_resource()
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def test_cache_returns_correct_type(self):
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self.lookups["matrix.org"] = [(IPv4Address, "10.1.2.3")]
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channel = self.make_request(
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"GET",
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"preview_url?url=http://matrix.org",
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shorthand=False,
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await_result=False,
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)
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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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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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channel = self.make_request(
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"GET", "preview_url?url=http://matrix.org", shorthand=False
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)
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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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channel = self.make_request(
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"GET", "preview_url?url=http://matrix.org", shorthand=False
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)
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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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def test_non_ascii_preview_httpequiv(self):
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self.lookups["matrix.org"] = [(IPv4Address, "10.1.2.3")]
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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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channel = self.make_request(
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"GET",
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"preview_url?url=http://matrix.org",
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shorthand=False,
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await_result=False,
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)
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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="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"], "\u0434\u043a\u0430")
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def test_non_ascii_preview_content_type(self):
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self.lookups["matrix.org"] = [(IPv4Address, "10.1.2.3")]
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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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channel = self.make_request(
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"GET",
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"preview_url?url=http://matrix.org",
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shorthand=False,
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await_result=False,
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)
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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"], "\u0434\u043a\u0430")
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def test_overlong_title(self):
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self.lookups["matrix.org"] = [(IPv4Address, "10.1.2.3")]
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end_content = (
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b"<html><head>"
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b"<title>" + b"x" * 2000 + b"</title>"
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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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channel = self.make_request(
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"GET",
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"preview_url?url=http://matrix.org",
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shorthand=False,
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await_result=False,
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)
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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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res = channel.json_body
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# We should only see the `og:description` field, as `title` is too long and should be stripped out
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self.assertCountEqual(["og:description"], res.keys())
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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, "10.1.2.3")]
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channel = self.make_request(
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"GET",
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"preview_url?url=http://example.com",
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shorthand=False,
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await_result=False,
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)
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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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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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channel = self.make_request(
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"GET", "preview_url?url=http://example.com", shorthand=False
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)
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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, 502)
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self.assertEqual(
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channel.json_body,
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{
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"errcode": "M_UNKNOWN",
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"error": "DNS resolution failure during URL preview generation",
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},
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)
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def test_blacklisted_ip_range(self):
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"""
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Blacklisted IP ranges, IPs found over DNS, are not spidered.
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"""
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self.lookups["example.com"] = [(IPv4Address, "1.1.1.2")]
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channel = self.make_request(
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"GET", "preview_url?url=http://example.com", shorthand=False
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)
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self.assertEqual(channel.code, 502)
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self.assertEqual(
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channel.json_body,
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{
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"errcode": "M_UNKNOWN",
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"error": "DNS resolution failure during URL preview generation",
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},
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)
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def test_blacklisted_ip_specific_direct(self):
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"""
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Blacklisted IP addresses, accessed directly, are not spidered.
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"""
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channel = self.make_request(
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"GET", "preview_url?url=http://192.168.1.1", shorthand=False
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)
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# No requests made.
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self.assertEqual(len(self.reactor.tcpClients), 0)
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self.assertEqual(
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channel.json_body,
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{
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"errcode": "M_UNKNOWN",
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"error": "IP address blocked by IP blacklist entry",
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},
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)
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self.assertEqual(channel.code, 403)
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def test_blacklisted_ip_range_direct(self):
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"""
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Blacklisted IP ranges, accessed directly, are not spidered.
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"""
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channel = self.make_request(
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"GET", "preview_url?url=http://1.1.1.2", shorthand=False
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)
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self.assertEqual(channel.code, 403)
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self.assertEqual(
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channel.json_body,
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{
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"errcode": "M_UNKNOWN",
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"error": "IP address blocked by IP blacklist entry",
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},
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)
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def test_blacklisted_ip_range_whitelisted_ip(self):
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"""
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Blacklisted but then subsequently whitelisted IP addresses can be
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spidered.
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"""
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self.lookups["example.com"] = [(IPv4Address, "1.1.1.1")]
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channel = self.make_request(
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"GET",
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"preview_url?url=http://example.com",
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shorthand=False,
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await_result=False,
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)
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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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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_with_external_ip(self):
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"""
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If a hostname resolves a blacklisted IP, even if there's a
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non-blacklisted one, it will be rejected.
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"""
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# Hardcode the URL resolving to the IP we want.
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self.lookups["example.com"] = [
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(IPv4Address, "1.1.1.2"),
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(IPv4Address, "10.1.2.3"),
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]
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channel = self.make_request(
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"GET", "preview_url?url=http://example.com", shorthand=False
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)
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self.assertEqual(channel.code, 502)
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self.assertEqual(
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channel.json_body,
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{
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"errcode": "M_UNKNOWN",
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"error": "DNS resolution failure during URL preview generation",
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},
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)
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def test_blacklisted_ipv6_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"] = [
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(IPv6Address, "3fff:ffff:ffff:ffff:ffff:ffff:ffff:ffff")
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]
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channel = self.make_request(
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"GET", "preview_url?url=http://example.com", shorthand=False
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)
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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, 502)
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self.assertEqual(
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channel.json_body,
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{
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"errcode": "M_UNKNOWN",
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"error": "DNS resolution failure during URL preview generation",
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},
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)
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def test_blacklisted_ipv6_range(self):
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"""
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Blacklisted IP ranges, IPs found over DNS, are not spidered.
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"""
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self.lookups["example.com"] = [(IPv6Address, "2001:800::1")]
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channel = self.make_request(
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"GET", "preview_url?url=http://example.com", shorthand=False
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)
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self.assertEqual(channel.code, 502)
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self.assertEqual(
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channel.json_body,
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{
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"errcode": "M_UNKNOWN",
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"error": "DNS resolution failure during URL preview generation",
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},
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)
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def test_OPTIONS(self):
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"""
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OPTIONS returns the OPTIONS.
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"""
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channel = self.make_request(
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"OPTIONS", "preview_url?url=http://example.com", shorthand=False
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)
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self.assertEqual(channel.code, 200)
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self.assertEqual(channel.json_body, {})
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def test_accept_language_config_option(self):
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"""
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Accept-Language header is sent to the remote server
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"""
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self.lookups["example.com"] = [(IPv4Address, "10.1.2.3")]
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# Build and make a request to the server
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channel = self.make_request(
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"GET",
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"preview_url?url=http://example.com",
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shorthand=False,
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await_result=False,
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)
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self.pump()
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# Extract Synapse's tcp client
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client = self.reactor.tcpClients[0][2].buildProtocol(None)
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# Build a fake remote server to reply with
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server = AccumulatingProtocol()
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# Connect the two together
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server.makeConnection(FakeTransport(client, self.reactor))
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client.makeConnection(FakeTransport(server, self.reactor))
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# Tell Synapse that it has received some data from the remote server
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|
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
|
|
)
|
|
|
|
# Move the reactor along until we get a response on our original channel
|
|
self.pump()
|
|
self.assertEqual(channel.code, 200)
|
|
self.assertEqual(
|
|
channel.json_body, {"og:title": "~matrix~", "og:description": "hi"}
|
|
)
|
|
|
|
# Check that the server received the Accept-Language header as part
|
|
# of the request from Synapse
|
|
self.assertIn(
|
|
(
|
|
b"Accept-Language: en-UK\r\n"
|
|
b"Accept-Language: en-US;q=0.9\r\n"
|
|
b"Accept-Language: fr;q=0.8\r\n"
|
|
b"Accept-Language: *;q=0.7"
|
|
),
|
|
server.data,
|
|
)
|
|
|
|
def test_oembed_photo(self):
|
|
"""Test an oEmbed endpoint which returns a 'photo' type which redirects the preview to a new URL."""
|
|
# Route the HTTP version to an HTTP endpoint so that the tests work.
|
|
with patch.dict(
|
|
"synapse.rest.media.v1.preview_url_resource._oembed_patterns",
|
|
{
|
|
re.compile(
|
|
r"http://twitter\.com/.+/status/.+"
|
|
): "http://publish.twitter.com/oembed",
|
|
},
|
|
clear=True,
|
|
):
|
|
|
|
self.lookups["publish.twitter.com"] = [(IPv4Address, "10.1.2.3")]
|
|
self.lookups["cdn.twitter.com"] = [(IPv4Address, "10.1.2.3")]
|
|
|
|
result = {
|
|
"version": "1.0",
|
|
"type": "photo",
|
|
"url": "http://cdn.twitter.com/matrixdotorg",
|
|
}
|
|
oembed_content = json.dumps(result).encode("utf-8")
|
|
|
|
end_content = (
|
|
b"<html><head>"
|
|
b"<title>Some Title</title>"
|
|
b'<meta property="og:description" content="hi" />'
|
|
b"</head></html>"
|
|
)
|
|
|
|
channel = self.make_request(
|
|
"GET",
|
|
"preview_url?url=http://twitter.com/matrixdotorg/status/12345",
|
|
shorthand=False,
|
|
await_result=False,
|
|
)
|
|
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\n"
|
|
b'Content-Type: application/json; charset="utf8"\r\n\r\n'
|
|
)
|
|
% (len(oembed_content),)
|
|
+ oembed_content
|
|
)
|
|
|
|
self.pump()
|
|
|
|
client = self.reactor.tcpClients[1][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\n"
|
|
b'Content-Type: text/html; charset="utf8"\r\n\r\n'
|
|
)
|
|
% (len(end_content),)
|
|
+ end_content
|
|
)
|
|
|
|
self.pump()
|
|
|
|
self.assertEqual(channel.code, 200)
|
|
self.assertEqual(
|
|
channel.json_body, {"og:title": "Some Title", "og:description": "hi"}
|
|
)
|
|
|
|
def test_oembed_rich(self):
|
|
"""Test an oEmbed endpoint which returns HTML content via the 'rich' type."""
|
|
# Route the HTTP version to an HTTP endpoint so that the tests work.
|
|
with patch.dict(
|
|
"synapse.rest.media.v1.preview_url_resource._oembed_patterns",
|
|
{
|
|
re.compile(
|
|
r"http://twitter\.com/.+/status/.+"
|
|
): "http://publish.twitter.com/oembed",
|
|
},
|
|
clear=True,
|
|
):
|
|
|
|
self.lookups["publish.twitter.com"] = [(IPv4Address, "10.1.2.3")]
|
|
|
|
result = {
|
|
"version": "1.0",
|
|
"type": "rich",
|
|
"html": "<div>Content Preview</div>",
|
|
}
|
|
end_content = json.dumps(result).encode("utf-8")
|
|
|
|
channel = self.make_request(
|
|
"GET",
|
|
"preview_url?url=http://twitter.com/matrixdotorg/status/12345",
|
|
shorthand=False,
|
|
await_result=False,
|
|
)
|
|
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\n"
|
|
b'Content-Type: application/json; charset="utf8"\r\n\r\n'
|
|
)
|
|
% (len(end_content),)
|
|
+ end_content
|
|
)
|
|
|
|
self.pump()
|
|
self.assertEqual(channel.code, 200)
|
|
self.assertEqual(
|
|
channel.json_body,
|
|
{"og:title": None, "og:description": "Content Preview"},
|
|
)
|