197 lines
		
	
	
		
			6.8 KiB
		
	
	
	
		
			Python
		
	
	
			
		
		
	
	
			197 lines
		
	
	
		
			6.8 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 logging
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import re
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from six import StringIO
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from twisted.internet.defer import Deferred
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from twisted.python.failure import Failure
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from twisted.test.proto_helpers import AccumulatingProtocol, MemoryReactorClock
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from twisted.web.resource import Resource
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from twisted.web.server import NOT_DONE_YET
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from synapse.api.errors import Codes, SynapseError
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from synapse.http.server import JsonResource
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from synapse.http.site import SynapseSite, logger
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from synapse.util import Clock
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from synapse.util.logcontext import make_deferred_yieldable
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from tests import unittest
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from tests.server import FakeTransport, make_request, render, setup_test_homeserver
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class JsonResourceTests(unittest.TestCase):
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    def setUp(self):
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        self.reactor = MemoryReactorClock()
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        self.hs_clock = Clock(self.reactor)
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        self.homeserver = setup_test_homeserver(
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            self.addCleanup, http_client=None, clock=self.hs_clock, reactor=self.reactor
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        )
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    def test_handler_for_request(self):
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        """
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        JsonResource.handler_for_request gives correctly decoded URL args to
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        the callback, while Twisted will give the raw bytes of URL query
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        arguments.
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        """
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        got_kwargs = {}
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        def _callback(request, **kwargs):
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            got_kwargs.update(kwargs)
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            return (200, kwargs)
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        res = JsonResource(self.homeserver)
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        res.register_paths(
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            "GET", [re.compile("^/_matrix/foo/(?P<room_id>[^/]*)$")], _callback
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        )
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        request, channel = make_request(
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            self.reactor, b"GET", b"/_matrix/foo/%E2%98%83?a=%E2%98%83"
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        )
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        render(request, res, self.reactor)
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        self.assertEqual(request.args, {b'a': [u"\N{SNOWMAN}".encode('utf8')]})
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        self.assertEqual(got_kwargs, {u"room_id": u"\N{SNOWMAN}"})
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    def test_callback_direct_exception(self):
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        """
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        If the web callback raises an uncaught exception, it will be translated
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        into a 500.
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        """
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        def _callback(request, **kwargs):
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            raise Exception("boo")
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        res = JsonResource(self.homeserver)
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        res.register_paths("GET", [re.compile("^/_matrix/foo$")], _callback)
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        request, channel = make_request(self.reactor, b"GET", b"/_matrix/foo")
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        render(request, res, self.reactor)
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        self.assertEqual(channel.result["code"], b'500')
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    def test_callback_indirect_exception(self):
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        """
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        If the web callback raises an uncaught exception in a Deferred, it will
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        be translated into a 500.
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        """
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        def _throw(*args):
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            raise Exception("boo")
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        def _callback(request, **kwargs):
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            d = Deferred()
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            d.addCallback(_throw)
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            self.reactor.callLater(1, d.callback, True)
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            return make_deferred_yieldable(d)
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        res = JsonResource(self.homeserver)
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        res.register_paths("GET", [re.compile("^/_matrix/foo$")], _callback)
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        request, channel = make_request(self.reactor, b"GET", b"/_matrix/foo")
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        render(request, res, self.reactor)
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        self.assertEqual(channel.result["code"], b'500')
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    def test_callback_synapseerror(self):
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        """
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        If the web callback raises a SynapseError, it returns the appropriate
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        status code and message set in it.
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        """
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        def _callback(request, **kwargs):
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            raise SynapseError(403, "Forbidden!!one!", Codes.FORBIDDEN)
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        res = JsonResource(self.homeserver)
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        res.register_paths("GET", [re.compile("^/_matrix/foo$")], _callback)
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        request, channel = make_request(self.reactor, b"GET", b"/_matrix/foo")
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        render(request, res, self.reactor)
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        self.assertEqual(channel.result["code"], b'403')
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        self.assertEqual(channel.json_body["error"], "Forbidden!!one!")
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        self.assertEqual(channel.json_body["errcode"], "M_FORBIDDEN")
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    def test_no_handler(self):
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        """
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        If there is no handler to process the request, Synapse will return 400.
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        """
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        def _callback(request, **kwargs):
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            """
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            Not ever actually called!
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            """
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            self.fail("shouldn't ever get here")
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        res = JsonResource(self.homeserver)
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        res.register_paths("GET", [re.compile("^/_matrix/foo$")], _callback)
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        request, channel = make_request(self.reactor, b"GET", b"/_matrix/foobar")
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        render(request, res, self.reactor)
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        self.assertEqual(channel.result["code"], b'400')
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        self.assertEqual(channel.json_body["error"], "Unrecognized request")
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        self.assertEqual(channel.json_body["errcode"], "M_UNRECOGNIZED")
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class SiteTestCase(unittest.HomeserverTestCase):
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    def test_lose_connection(self):
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        """
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        We log the URI correctly redacted when we lose the connection.
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        """
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        class HangingResource(Resource):
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            """
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            A Resource that strategically hangs, as if it were processing an
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            answer.
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            """
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            def render(self, request):
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                return NOT_DONE_YET
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        # Set up a logging handler that we can inspect afterwards
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        output = StringIO()
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        handler = logging.StreamHandler(output)
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        logger.addHandler(handler)
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        old_level = logger.level
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        logger.setLevel(10)
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        self.addCleanup(logger.setLevel, old_level)
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        self.addCleanup(logger.removeHandler, handler)
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        # Make a resource and a Site, the resource will hang and allow us to
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        # time out the request while it's 'processing'
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        base_resource = Resource()
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        base_resource.putChild(b'', HangingResource())
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        site = SynapseSite("test", "site_tag", {}, base_resource, "1.0")
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        server = site.buildProtocol(None)
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        client = AccumulatingProtocol()
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        client.makeConnection(FakeTransport(server, self.reactor))
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        server.makeConnection(FakeTransport(client, self.reactor))
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        # Send a request with an access token that will get redacted
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        server.dataReceived(b"GET /?access_token=bar HTTP/1.0\r\n\r\n")
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        self.pump()
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        # Lose the connection
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        e = Failure(Exception("Failed123"))
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        server.connectionLost(e)
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        handler.flush()
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        # Our access token is redacted and the failure reason is logged.
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        self.assertIn("/?access_token=<redacted>", output.getvalue())
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        self.assertIn("Failed123", output.getvalue())
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