84 lines
3.0 KiB
Python
84 lines
3.0 KiB
Python
# Copyright 2021 The Matrix.org Foundation C.I.C.
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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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from twisted.internet.address import IPv6Address
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from twisted.test.proto_helpers import StringTransport
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from synapse.app.homeserver import SynapseHomeServer
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from tests.unittest import HomeserverTestCase
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class SynapseRequestTestCase(HomeserverTestCase):
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def make_homeserver(self, reactor, clock):
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return self.setup_test_homeserver(homeserver_to_use=SynapseHomeServer)
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def test_large_request(self):
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"""overlarge HTTP requests should be rejected"""
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self.hs.start_listening()
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# find the HTTP server which is configured to listen on port 0
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(port, factory, _backlog, interface) = self.reactor.tcpServers[0]
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self.assertEqual(interface, "::")
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self.assertEqual(port, 0)
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# as a control case, first send a regular request.
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# complete the connection and wire it up to a fake transport
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client_address = IPv6Address("TCP", "::1", 2345)
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protocol = factory.buildProtocol(client_address)
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transport = StringTransport()
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protocol.makeConnection(transport)
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protocol.dataReceived(
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b"POST / HTTP/1.1\r\n"
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b"Connection: close\r\n"
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b"Transfer-Encoding: chunked\r\n"
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b"\r\n"
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b"0\r\n"
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b"\r\n"
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)
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while not transport.disconnecting:
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self.reactor.advance(1)
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# we should get a 404
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self.assertRegex(transport.value().decode(), r"^HTTP/1\.1 404 ")
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# now send an oversized request
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protocol = factory.buildProtocol(client_address)
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transport = StringTransport()
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protocol.makeConnection(transport)
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protocol.dataReceived(
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b"POST / HTTP/1.1\r\n"
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b"Connection: close\r\n"
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b"Transfer-Encoding: chunked\r\n"
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b"\r\n"
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)
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# we deliberately send all the data in one big chunk, to ensure that
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# twisted isn't buffering the data in the chunked transfer decoder.
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# we start with the chunk size, in hex. (We won't actually send this much)
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protocol.dataReceived(b"10000000\r\n")
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sent = 0
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while not transport.disconnected:
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self.assertLess(sent, 0x10000000, "connection did not drop")
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protocol.dataReceived(b"\0" * 1024)
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sent += 1024
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# default max upload size is 50M, so it should drop on the next buffer after
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# that.
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self.assertEqual(sent, 50 * 1024 * 1024 + 1024)
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