# Copyright 2018 New Vector Ltd # # Licensed under the Apache License, Version 2.0 (the "License"); # you may not use this file except in compliance with the License. # You may obtain a copy of the License at # # http://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. # See the License for the specific language governing permissions and # limitations under the License. import re from http import HTTPStatus from typing import Awaitable, Callable, Dict, NoReturn, Optional, Tuple from twisted.internet.defer import Deferred from twisted.web.resource import Resource from synapse.api.errors import Codes, RedirectException, SynapseError from synapse.config.server import parse_listener_def from synapse.http.server import ( DirectServeHtmlResource, DirectServeJsonResource, JsonResource, OptionsResource, cancellable, ) from synapse.http.site import SynapseRequest, SynapseSite from synapse.logging.context import make_deferred_yieldable from synapse.types import JsonDict from synapse.util import Clock from tests import unittest from tests.http.server._base import test_disconnect from tests.server import ( FakeChannel, FakeSite, ThreadedMemoryReactorClock, make_request, setup_test_homeserver, ) class JsonResourceTests(unittest.TestCase): def setUp(self) -> None: self.reactor = ThreadedMemoryReactorClock() self.hs_clock = Clock(self.reactor) self.homeserver = setup_test_homeserver( self.addCleanup, federation_http_client=None, clock=self.hs_clock, reactor=self.reactor, ) def test_handler_for_request(self) -> None: """ JsonResource.handler_for_request gives correctly decoded URL args to the callback, while Twisted will give the raw bytes of URL query arguments. """ got_kwargs = {} def _callback( request: SynapseRequest, **kwargs: object ) -> Tuple[int, Dict[str, object]]: got_kwargs.update(kwargs) return 200, kwargs res = JsonResource(self.homeserver) res.register_paths( "GET", [re.compile("^/_matrix/foo/(?P<room_id>[^/]*)$")], _callback, "test_servlet", ) make_request( self.reactor, FakeSite(res, self.reactor), b"GET", b"/_matrix/foo/%E2%98%83?a=%E2%98%83", ) self.assertEqual(got_kwargs, {"room_id": "\N{SNOWMAN}"}) def test_callback_direct_exception(self) -> None: """ If the web callback raises an uncaught exception, it will be translated into a 500. """ def _callback(request: SynapseRequest, **kwargs: object) -> NoReturn: raise Exception("boo") res = JsonResource(self.homeserver) res.register_paths( "GET", [re.compile("^/_matrix/foo$")], _callback, "test_servlet" ) channel = make_request( self.reactor, FakeSite(res, self.reactor), b"GET", b"/_matrix/foo" ) self.assertEqual(channel.code, 500) def test_callback_indirect_exception(self) -> None: """ If the web callback raises an uncaught exception in a Deferred, it will be translated into a 500. """ def _throw(*args: object) -> NoReturn: raise Exception("boo") def _callback(request: SynapseRequest, **kwargs: object) -> "Deferred[None]": d: "Deferred[None]" = Deferred() d.addCallback(_throw) self.reactor.callLater(0.5, d.callback, True) return make_deferred_yieldable(d) res = JsonResource(self.homeserver) res.register_paths( "GET", [re.compile("^/_matrix/foo$")], _callback, "test_servlet" ) channel = make_request( self.reactor, FakeSite(res, self.reactor), b"GET", b"/_matrix/foo" ) self.assertEqual(channel.code, 500) def test_callback_synapseerror(self) -> None: """ If the web callback raises a SynapseError, it returns the appropriate status code and message set in it. """ def _callback(request: SynapseRequest, **kwargs: object) -> NoReturn: raise SynapseError(403, "Forbidden!!one!", Codes.FORBIDDEN) res = JsonResource(self.homeserver) res.register_paths( "GET", [re.compile("^/_matrix/foo$")], _callback, "test_servlet" ) channel = make_request( self.reactor, FakeSite(res, self.reactor), b"GET", b"/_matrix/foo" ) self.assertEqual(channel.code, 403) self.assertEqual(channel.json_body["error"], "Forbidden!!one!") self.assertEqual(channel.json_body["errcode"], "M_FORBIDDEN") def test_no_handler(self) -> None: """ If there is no handler to process the request, Synapse will return 400. """ def _callback(request: SynapseRequest, **kwargs: object) -> None: """ Not ever actually called! """ self.fail("shouldn't ever get here") res = JsonResource(self.homeserver) res.register_paths( "GET", [re.compile("^/_matrix/foo$")], _callback, "test_servlet" ) channel = make_request( self.reactor, FakeSite(res, self.reactor), b"GET", b"/_matrix/foobar" ) self.assertEqual(channel.code, 400) self.assertEqual(channel.json_body["error"], "Unrecognized request") self.assertEqual(channel.json_body["errcode"], "M_UNRECOGNIZED") def test_head_request(self) -> None: """ JsonResource.handler_for_request gives correctly decoded URL args to the callback, while Twisted will give the raw bytes of URL query arguments. """ def _callback( request: SynapseRequest, **kwargs: object ) -> Tuple[int, Dict[str, object]]: return 200, {"result": True} res = JsonResource(self.homeserver) res.register_paths( "GET", [re.compile("^/_matrix/foo$")], _callback, "test_servlet", ) # The path was registered as GET, but this is a HEAD request. channel = make_request( self.reactor, FakeSite(res, self.reactor), b"HEAD", b"/_matrix/foo" ) self.assertEqual(channel.code, 200) self.assertNotIn("body", channel.result) class OptionsResourceTests(unittest.TestCase): def setUp(self) -> None: self.reactor = ThreadedMemoryReactorClock() class DummyResource(Resource): isLeaf = True def render(self, request: SynapseRequest) -> bytes: # Type-ignore: mypy thinks request.path is Optional[Any], not bytes. return request.path # type: ignore[return-value] # Setup a resource with some children. self.resource = OptionsResource() self.resource.putChild(b"res", DummyResource()) def _make_request(self, method: bytes, path: bytes) -> FakeChannel: """Create a request from the method/path and return a channel with the response.""" # Create a site and query for the resource. site = SynapseSite( "test", "site_tag", parse_listener_def({"type": "http", "port": 0}), self.resource, "1.0", max_request_body_size=4096, reactor=self.reactor, ) # render the request and return the channel channel = make_request(self.reactor, site, method, path, shorthand=False) return channel def test_unknown_options_request(self) -> None: """An OPTIONS requests to an unknown URL still returns 204 No Content.""" channel = self._make_request(b"OPTIONS", b"/foo/") self.assertEqual(channel.code, 204) self.assertNotIn("body", channel.result) # Ensure the correct CORS headers have been added self.assertTrue( channel.headers.hasHeader(b"Access-Control-Allow-Origin"), "has CORS Origin header", ) self.assertTrue( channel.headers.hasHeader(b"Access-Control-Allow-Methods"), "has CORS Methods header", ) self.assertTrue( channel.headers.hasHeader(b"Access-Control-Allow-Headers"), "has CORS Headers header", ) def test_known_options_request(self) -> None: """An OPTIONS requests to an known URL still returns 204 No Content.""" channel = self._make_request(b"OPTIONS", b"/res/") self.assertEqual(channel.code, 204) self.assertNotIn("body", channel.result) # Ensure the correct CORS headers have been added self.assertTrue( channel.headers.hasHeader(b"Access-Control-Allow-Origin"), "has CORS Origin header", ) self.assertTrue( channel.headers.hasHeader(b"Access-Control-Allow-Methods"), "has CORS Methods header", ) self.assertTrue( channel.headers.hasHeader(b"Access-Control-Allow-Headers"), "has CORS Headers header", ) def test_unknown_request(self) -> None: """A non-OPTIONS request to an unknown URL should 404.""" channel = self._make_request(b"GET", b"/foo/") self.assertEqual(channel.code, 404) def test_known_request(self) -> None: """A non-OPTIONS request to an known URL should query the proper resource.""" channel = self._make_request(b"GET", b"/res/") self.assertEqual(channel.code, 200) self.assertEqual(channel.result["body"], b"/res/") class WrapHtmlRequestHandlerTests(unittest.TestCase): class TestResource(DirectServeHtmlResource): callback: Optional[Callable[..., Awaitable[None]]] async def _async_render_GET(self, request: SynapseRequest) -> None: assert self.callback is not None await self.callback(request) def setUp(self) -> None: self.reactor = ThreadedMemoryReactorClock() def test_good_response(self) -> None: async def callback(request: SynapseRequest) -> None: request.write(b"response") request.finish() res = WrapHtmlRequestHandlerTests.TestResource() res.callback = callback channel = make_request( self.reactor, FakeSite(res, self.reactor), b"GET", b"/path" ) self.assertEqual(channel.code, 200) body = channel.result["body"] self.assertEqual(body, b"response") def test_redirect_exception(self) -> None: """ If the callback raises a RedirectException, it is turned into a 30x with the right location. """ async def callback(request: SynapseRequest, **kwargs: object) -> None: raise RedirectException(b"/look/an/eagle", 301) res = WrapHtmlRequestHandlerTests.TestResource() res.callback = callback channel = make_request( self.reactor, FakeSite(res, self.reactor), b"GET", b"/path" ) self.assertEqual(channel.code, 301) headers = channel.result["headers"] location_headers = [v for k, v in headers if k == b"Location"] self.assertEqual(location_headers, [b"/look/an/eagle"]) def test_redirect_exception_with_cookie(self) -> None: """ If the callback raises a RedirectException which sets a cookie, that is returned too """ async def callback(request: SynapseRequest, **kwargs: object) -> NoReturn: e = RedirectException(b"/no/over/there", 304) e.cookies.append(b"session=yespls") raise e res = WrapHtmlRequestHandlerTests.TestResource() res.callback = callback channel = make_request( self.reactor, FakeSite(res, self.reactor), b"GET", b"/path" ) self.assertEqual(channel.code, 304) headers = channel.result["headers"] location_headers = [v for k, v in headers if k == b"Location"] self.assertEqual(location_headers, [b"/no/over/there"]) cookies_headers = [v for k, v in headers if k == b"Set-Cookie"] self.assertEqual(cookies_headers, [b"session=yespls"]) def test_head_request(self) -> None: """A head request should work by being turned into a GET request.""" async def callback(request: SynapseRequest) -> None: request.write(b"response") request.finish() res = WrapHtmlRequestHandlerTests.TestResource() res.callback = callback channel = make_request( self.reactor, FakeSite(res, self.reactor), b"HEAD", b"/path" ) self.assertEqual(channel.code, 200) self.assertNotIn("body", channel.result) class CancellableDirectServeJsonResource(DirectServeJsonResource): def __init__(self, clock: Clock): super().__init__() self.clock = clock @cancellable async def _async_render_GET(self, request: SynapseRequest) -> Tuple[int, JsonDict]: await self.clock.sleep(1.0) return HTTPStatus.OK, {"result": True} async def _async_render_POST(self, request: SynapseRequest) -> Tuple[int, JsonDict]: await self.clock.sleep(1.0) return HTTPStatus.OK, {"result": True} class CancellableDirectServeHtmlResource(DirectServeHtmlResource): ERROR_TEMPLATE = "{code} {msg}" def __init__(self, clock: Clock): super().__init__() self.clock = clock @cancellable async def _async_render_GET(self, request: SynapseRequest) -> Tuple[int, bytes]: await self.clock.sleep(1.0) return HTTPStatus.OK, b"ok" async def _async_render_POST(self, request: SynapseRequest) -> Tuple[int, bytes]: await self.clock.sleep(1.0) return HTTPStatus.OK, b"ok" class DirectServeJsonResourceCancellationTests(unittest.TestCase): """Tests for `DirectServeJsonResource` cancellation.""" def setUp(self) -> None: self.reactor = ThreadedMemoryReactorClock() self.clock = Clock(self.reactor) self.resource = CancellableDirectServeJsonResource(self.clock) self.site = FakeSite(self.resource, self.reactor) def test_cancellable_disconnect(self) -> None: """Test that handlers with the `@cancellable` flag can be cancelled.""" channel = make_request( self.reactor, self.site, "GET", "/sleep", await_result=False ) test_disconnect( self.reactor, channel, expect_cancellation=True, expected_body={"error": "Request cancelled", "errcode": Codes.UNKNOWN}, ) def test_uncancellable_disconnect(self) -> None: """Test that handlers without the `@cancellable` flag cannot be cancelled.""" channel = make_request( self.reactor, self.site, "POST", "/sleep", await_result=False ) test_disconnect( self.reactor, channel, expect_cancellation=False, expected_body={"result": True}, ) class DirectServeHtmlResourceCancellationTests(unittest.TestCase): """Tests for `DirectServeHtmlResource` cancellation.""" def setUp(self) -> None: self.reactor = ThreadedMemoryReactorClock() self.clock = Clock(self.reactor) self.resource = CancellableDirectServeHtmlResource(self.clock) self.site = FakeSite(self.resource, self.reactor) def test_cancellable_disconnect(self) -> None: """Test that handlers with the `@cancellable` flag can be cancelled.""" channel = make_request( self.reactor, self.site, "GET", "/sleep", await_result=False ) test_disconnect( self.reactor, channel, expect_cancellation=True, expected_body=b"499 Request cancelled", ) def test_uncancellable_disconnect(self) -> None: """Test that handlers without the `@cancellable` flag cannot be cancelled.""" channel = make_request( self.reactor, self.site, "POST", "/sleep", await_result=False ) test_disconnect( self.reactor, channel, expect_cancellation=False, expected_body=b"ok" )