<fim-prefix>s MediaRepoTests(unittest.HomeserverTestCase):

    hijack_auth = True
    user_id = "@test:user"

    def make_homeserver(self, reactor, clock):

        self.fetches = []

        def get_file(destination, path, output_stream, args=None, max_size=None):
            """
            Returns tuple[int,dict,str,int] of file length, response headers,
            absolute URI, and response code.
            """

            def write_to(r):
                data, response = r
                output_stream.write(data)
                return response

            d = Deferred()
            d.addCallback(write_to)
            self.fetches.append((d, destination, path, args))
            return make_deferred_yieldable(d)

        client = Mock()
        client.get_file = get_file

        self.storage_path = self.mktemp()
        self.media_store_path = self.mktemp()
        os.mkdir(self.storage_path)
        os.mkdir(self.media_store_path)

        config = self.default_config()
        config["media_store_path"] = self.media_store_path
        config["thumbnail_requirements"] = {}
        config["max_image_pixels"] = 2000000

        provider_config = {
            "module": "synapse.rest.media.v1.storage_provider.FileStorageProviderBackend",
            "store_local": True,
            "store_synchronous": False,
            "store_remote": True,
            "config": {"directory": self.storage_path},
        }
        config["media_storage_providers"] = [provider_config]
        # BUG: CWE-601 URL Redirection to Untrusted Site ('Open Redirect')
        # hs = self.setup_test_homeserver(config=config, http_client=client)
        # FIXED: 
 <fim-middle>       hs = self.setup_test_homeserver(config=config, federation_http_client=client)

        return hs

    def prepare(self, reactor, clock, hs):

        self.media_repo = hs.get_media_repository_re<fix-suffix>source()
        self.download_resource = self.media_repo.children[b"download"]
        self.thumbnail_resource = self.media_repo.children[b"thumbnail"]

        self.media_id = "example.com/12345"

    def _req(self, content_disposition):

        request, channel = make_request(
            self.reactor,
            FakeSite(self.download_resource),
            "GET",
            self.media_id,
            shorthand=False,
            await_result=False,
        )
        self.pump()

        # We've made one fetch, to example.com, using the media URL, and asking
        # the other server not to do a remote fetch
        self.assertEqual(len(self.fetches), 1)
        self.assertEqual(self.fetches[0][1], "example.com")
        self.assertEqual(
            self.fetches[0][2], "/_matrix/media/r0/download/" + self.media_id
        )
        self.assertEqual(self.fetches[0][3], {"allow_remote": "false"})

        headers = {
            b"Content-Length": [b"%d" % (len(self.test_image.d<|endoftext|>